JP6943354B2 - Mechanical lock device - Google Patents

Description

The present invention relates to a mechanical lock device.

Conventionally, mechanical button locks, dial locks, and the like have been known as lock devices for locking objects to be locked such as doors and doors. Compared to so-called electronic locks, mechanical lock devices do not require wiring and have advantages such as reduced maintenance.

In recent years, a button lock has also been proposed that can be locked by closing the operation knob without re-pressing the push button according to the unlock code when locking from the unlocked state. (See, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2014-129679

However, according to the button lock described in Patent Document 1 described above, when the lock is locked from the unlocked state, the lock can be locked without re-pressing the push button according to the unlock code. Although it is easier to use than the other, it was still necessary to close the operation knob.

The present invention has been made in view of the above circumstances, and an object of the present invention is that locking can be performed by simply closing an opening / closing body such as a door that opens / closes the opening of the object to be locked at the time of locking, without performing an operation picking operation. The purpose is to provide a mechanical locking device.

In order to solve the above problems, in the present invention, when the stopper is in the disengaged posture, the stopper is urged in the direction of switching to the locked posture, and the operation is picked when the stopper is switched from the locked posture to the disengaged posture. The closing operation is regulated, and the closing operation is lifted when the latch is immersed when the opening / closing body is closed, and the locking mechanism body is locked to regulate the opening operation by the operation knob.

More specifically, it is a mechanical locking device attached to an opening / closing body that opens and closes the opening of the object to be locked, and is connected to the housing, a stopper that can be engaged with and detached from the seat of the object to be locked, and the stopper. An operation knob that can accept an external operation and switch the stopper between the locking posture and the disengaging posture, and an unlocked state when the external operation is accepted and the accepted external operation matches a predetermined unlocking operation. The lock mechanism body that allows the opening operation by the operation knob when it is in the lock state and regulates the opening operation by the operation knob when it is in the locked state, and the latch accommodating hole provided in the housing are provided so as to be freely retractable. , A latch urged in the protruding direction by a latch spring, and an automatic locking means for urging the stopper in a direction of switching from the disengagement posture to the locking posture when the stopper is in the disengagement posture. The operation of switching the stopper from the locked posture to the disengaged posture is triggered to regulate the closing operation of the operation knob, and the latch is immersed in the latch accommodating hole when the opening / closing body is closed. The closing operation regulating means for releasing the regulation of the closing operation and the closing operation regulating means for restricting the closing operation of the operation knob are activated when the regulation is lifted. It is characterized in that, by locking the lock mechanism main body, the lock mechanism main body is provided with an automatic locking means for restricting an opening operation by the operation knob.

By adopting the above configuration, it is possible to lock the object to be locked by simply closing the opening / closing body such as the door of the object to be locked without performing the operation of the operation knob. Therefore, it is possible to provide a mechanical locking device having excellent usability. Can be done.

Further, in the mechanical locking device according to the present invention, the closing operation regulating means does not release the regulation of the closing operation of the operation knob when the latch is immersed in the latch accommodating hole when the opening / closing body is opened. It may be configured.

Further, the mechanical locking device according to the present invention is rotatably housed in the housing, is connected to the stopper and the operation knob, and rotates in conjunction with the operation knob to maintain the posture of the stopper. The automatic locking means is further provided with a tubular body that can be changed, and the automatic locking means includes a belt member that is arranged along the outer peripheral surface of the tubular body and one end of which is moored to the outer peripheral surface of the tubular body. Has an elastic member connected to the other end of the belt member and the other end is moored to the housing, and the elastic member extends from the detached posture when the stopper is in the detached posture. The tubular body may be configured so that a rotational force in a direction corresponding to the switching to the locking posture is applied to the tubular body.

Further, the mechanical locking device according to the present invention is rotatably housed in the housing, is connected to the stopper and the operation knob, and rotates in conjunction with the operation knob to maintain the posture of the stopper. The latch further comprises a tubular body that can be changed, the latch has a latch main body and a latch shaft portion provided on the latch main body, and the closing operation restricting means includes the latch main body and the latch spring. A sliding body that is arranged so as to be sandwiched between the latch bodies and that can slide along the latch shaft portion according to the movement of the latch main body, and an operating body having a detecting arm portion and a rotation restricting arm portion are included. The rotation restricting arm portion locks the locking portion provided on the outer peripheral surface of the tubular body when the stopper is switched from the locking posture to the disengaging posture, thereby closing the operation knob. The operating body changes its posture when the sliding body that slides following the immersion of the latch body into the latch accommodating hole when the opening / closing body is closed collides with the detection arm portion. As a result, the locking portion may be released from the locking portion by the rotation restricting arm portion.

Further, in the mechanical locking device according to the present invention, the operating body has a main body portion rotatably supported in the housing, and the detection arm portion and the rotation restricting arm portion from the main body portion. The closing operation regulating means constantly presses the operating body so that the main body rotates in the first direction in which the rotation regulating arm approaches the outer peripheral surface of the tubular body. When the stopper is switched from the locking posture to the disengaging posture, the rotation restricting arm portion is subjected to the pressing force of the pressing means, and the rotation regulating arm portion is the tubular body. Due to the collision force that engages with the locking portion and the slide body collides with the detection arm when the opening / closing body is closed, the main body portion is opposite to the first direction against the pressing force of the pressing means. By rotating in the second direction, the locking portion may be released from the locking portion by the rotation restricting arm portion.

Further, in the mechanical locking device according to the present invention, the slide body has an annular portion that is loosely fitted to the latch shaft portion and an operating arm portion that extends from the annular portion, and the closing operation is performed. The regulating means is such that the latch body is displaced to the retracted position where the operating arm is retracted with respect to the detection arm when the latch body is immersed in the latch accommodating hole as the opening / closing body is opened. Further, it has a circumferential displacement means for displaced the annular portion relative to the shaft portion in the circumferential direction of the latch shaft portion, and when the latch body is opened and retracted, the operating arm portion is in the retracted position. By being displaced, the operating arm may be prevented from colliding with the detection arm when the sliding body slides following the latch body.

Further, in the mechanical lock device according to the present invention, the lock mechanism main body has a plurality of push buttons, and the push buttons are unlocked by being pushed by the user in accordance with the unlocking code. It may be a button lock. In other words, the present invention may be a mechanical lock device and is not limited to a button lock.

According to the present invention, it is possible to provide a mechanical locking device that can be locked by simply closing an opening / closing body such as a door of the object to be locked at the time of locking without performing an operation of picking.

It is a perspective view of the button lock which concerns on embodiment. It is a perspective view of the button lock which concerns on embodiment. It is a rear view of the button lock which concerns on embodiment. It is a figure explaining the state which applied the button lock which concerns on embodiment to a locker. It is an exploded perspective view of the button lock which concerns on embodiment. It is an exploded perspective view of the button lock which concerns on embodiment. It is a figure which shows the internal cross-sectional structure of the button lock which concerns on embodiment. It is a figure which shows the connection mechanism of a cylinder and a stopper which concerns on embodiment. It is a figure which shows the connection mechanism of a cylinder and a stopper which concerns on embodiment. It is a front view of the button lock in the state which the front panel which concerns on embodiment is removed. It is a front view of the button lock in a state where the front panel and the upper case which concerns on embodiment are removed. It is a figure explaining the internal structure of the button lock which concerns on embodiment. It is a figure explaining the internal structure of the button lock which concerns on embodiment. It is a perspective view of the operation rod of the button lock which concerns on embodiment. It is a figure which shows the relative relationship between the operation rod and the push button which concerns on embodiment. It is a figure which shows the state which the movable block is attached to the operation rod which concerns on embodiment. It is a perspective view of the movable block which concerns on embodiment. It is a figure which shows the relationship between the operation rod and the movable block which concerns on embodiment. It is a perspective view of the front side of the middle plate which concerns on embodiment. It is a front view of the middle plate which concerns on embodiment. It is a perspective view of the back side of the middle plate which concerns on embodiment. It is a front view of the guide plate which concerns on embodiment. It is a perspective view of the back side of the guide plate which concerns on embodiment. It is a figure explaining the internal structure of the button lock which concerns on embodiment. It is a perspective view which shows the slide rod which concerns on embodiment. It is a perspective view of the front side of the rod return plate which concerns on embodiment. It is a figure which shows the arm with a hook and the hook base which concerns on embodiment. It is a rear view of the button lock in a state where the rear panel and the stopper which concerns on embodiment are removed. It is a figure explaining the connection structure of the hook base and the arm with a hook which concerns on embodiment. It is a perspective view of the drive shaft which concerns on embodiment. It is a figure which shows the state which attached the finger which concerns on embodiment to a latch. It is a figure which shows the detail of the finger which concerns on embodiment. It is a perspective view of the outer cylinder which concerns on embodiment. It is a perspective view of the outer cylinder which concerns on embodiment. It is a figure which shows the belt which concerns on embodiment. It is a figure which shows the state which arranged the belt main body part of the belt which concerns on embodiment along the belt guide of the outer cylinder. It is the figure which looked at the upper case which concerns on embodiment from the inner surface side. It is a figure which shows the state which attached the lever to the holder which concerns on embodiment. It is a perspective view which shows the detail of the holder which concerns on embodiment. It is a perspective view which shows the detail of the lever which concerns on embodiment. It is a figure explaining the rod 1st holding state of the operation rod which concerns on embodiment. It is a figure explaining the rod 2nd holding state of the operation rod which concerns on embodiment. It is a figure which shows the relative relationship between the concave part of the movable block which concerns on embodiment, and the convex part of a slide rod. It is a figure which shows the state which the push button of the button lock which concerns on embodiment is not aligned with the unlocking code. It is a figure which shows each component constituting the automatic locking mechanism of the button lock which concerns on embodiment. It is a figure which shows each component constituting the automatic locking mechanism of the button lock which concerns on embodiment. It is a figure which shows each component constituting the automatic locking mechanism of the button lock which concerns on embodiment. It is a figure explaining the guide groove formed in the latch cover part of the button lock which concerns on embodiment. It is a figure which shows the operating state of the button lock at the time of the unlocking state door closing operation which concerns on embodiment. It is a figure which shows the operating state of the button lock at the time of the unlocking state door closing operation which concerns on embodiment. It is a figure which shows the operating state of the button lock at the time of the unlocking state door closing operation which concerns on embodiment. It is a figure which shows the state which the mating state of the claw part and the operation rod is released in conjunction with the slide of the rod return plate which concerns on embodiment. It is a figure for demonstrating the relationship of the detection arm part in a finger and a lever at the time of the unlocked state door opening operation which concerns on embodiment. It is a figure for demonstrating the relationship of the detection arm part in a finger and a lever at the time of the unlocked state door opening operation which concerns on embodiment. It is a figure for demonstrating the relationship of the detection arm part in a finger and a lever at the time of the unlocked state door opening operation which concerns on embodiment. It is a perspective view of the setting change switch which concerns on embodiment. It is a figure which shows the relative relationship between the rod return plate which concerns on embodiment, and the shaft part of a setting change switch. It is a figure which shows the state which the fitting of the movable block with respect to the operation rod is released at the time of setting the unlocking code which concerns on embodiment. It is a figure which shows the state which the fitting of the movable block with respect to the operation rod is released at the time of setting the unlocking code which concerns on embodiment.

Hereinafter, embodiments for carrying out the present invention will be described in detail exemplarily with reference to the drawings. Unless otherwise specified, the dimensions, materials, shapes, relative arrangements, etc. of the components described in the present embodiment are intended to limit the technical scope of the invention to those. is not it.

<Overall configuration>
1 and 2 are perspective views of a mechanical push button lock (hereinafter, simply referred to as “button lock”) 100 according to the embodiment. FIG. 1 is a perspective view of the button lock 100 viewed from the front (front) side where the push button 22 and the operation knob 4 are arranged. FIG. 2 is a perspective view of the button lock 100 as viewed from the back (rear surface) side. FIG. 3 is a rear view (rear view) of the button lock 100 according to the embodiment. FIG. 4 is a diagram illustrating a state in which the button lock 100 is applied to the locker 200, which is an example of the object to be locked. 5 and 6 are exploded perspective views of the button lock 100. The locker 200 includes a housing 210 and a door 220 that opens and closes the housing 210. The button lock 100 is attached to the door 220.

The button lock 100 has an upper case 2 and a lower case 3 that form a housing for accommodating and protecting various parts constituting the button lock 100. The upper case 2 and the lower case 3 form a housing by being fitted to each other in a state where various parts shown in FIGS. 5 and 6 are arranged inside. Needless to say, various changes can be made to the structure, shape, etc. of the housing. A front panel 21 is mounted on the outer surface of the upper case 2, and a rear panel 30 is mounted on the outer surface of the lower case 3. Reference numeral 110 represents a latch.

The front panel 21 attached to the upper case 2 covers the front side of the upper case 2. In the present embodiment, each direction of the button lock 100 is defined as shown in FIG. However, the vertical, horizontal, and front-rear directions of the button lock 100 do not specify the positional relationship with respect to an external reference reference, but merely specify the relative positional relationship between the parts of the button lock 100.

The front panel 21 of the button lock 100 is provided with a plurality of push buttons 22, a clear button 23, an operation knob 4, a display window 24, and the like. Further, in the vicinity of each push button 22 on the front panel 21, a code (including a number, a symbol, a character, etc.) corresponding to the push button 22 is printed, engraved, or the like. In the example shown in FIG. 1, the button lock 100 has 11 pushbuttons 22, with 0 to 9 and * marks printed next to the corresponding pushbuttons 22. However, the number of push buttons 22 included in the button lock 100 and the type of code printed on the front panel 21 can be changed according to the specifications of the button lock 100. The front panel 21 is provided with a button opening 211 having a shape and size suitable for allowing the push button 22, the clear button 23, and the like to appear and disappear, and is pushed through the button opening 211. Buttons 22 and the like can appear and disappear.

The push button 22 can move back and forth (appear and fall) freely inside and outside the housing through the button opening 211 formed in the front panel 21. The button lock 100 can be unlocked by pressing the push button 22 according to the unlocking code (so-called password). When the button lock 100 is in the unlocked state due to the internal mechanism, the user (handler) can rotate the operation knob 4 to open / close the stopper 10 of the button lock 100. The stopper 10 is attached to the housing and can be engaged with and detached from the frame 230 of the housing 210 in the rocker 200. The operation knob 4 is connected to the stopper 10, and the posture of the stopper 10 can be changed by rotating the operation knob 4. The user aligns the alignment mark (not shown) of the operation knob 4 with either the OPEN position 25 or the LOCK (CLOSE) position 26, so that the stopper 10 is locked or detached from the frame 230. Switching operation can be performed.

For example, in the state shown in FIG. 1, the alignment mark of the operation knob 4 is aligned with the LOCK position 26. By aligning the operation knob 4 with the LOCK position 26 with the door 220 of the locker 200 closed, the stopper 10 is locked to the frame 230 of the housing 210. On the other hand, when the user switches the operation knob 4 from the LOCK position 26 to the OPEN position 25, the posture of the stopper 10 changes from the locking posture (locking position) to the disengagement posture (disengagement position) as shown in FIGS. 2 and 3. ) Is changed. As a result, the stopper 10 is released from the frame 230 of the housing 210, so that the user can open the door 220.

Further, when the button lock 100 is internally mechanically locked, the rotation operation of the operation knob 4 is restricted. The display window 24 displays which of the OPEN position 25 and the LOCK position 26 the operation knob 4 is aligned with. In the present embodiment, the display mode of the display window 24 is switched so that the operation knob 4 becomes light blue when the operation knob 4 is in the OPEN position 25 and red when the operation knob 4 is in the LOCK position 26, but the present embodiment is not limited to this mode. .. That is, the display color when the operation knob 4 is at the OPEN position 25 and the display color when the operation knob 4 is at the LOCK position 26 are not particularly limited.

In normal use, the locking and unlocking operation of the button lock 100 (hereinafter, also referred to as “locking / unlocking operation”) is performed by the user pressing the push button 22 in accordance with the unlocking code. Will be done. For example, when the unlocking code is "1246", among the codes displayed on the front panel 21, the push buttons corresponding to the unlocking codes "1", "2", "4", and "6" are pressed. When only the button 22 is pressed and the other push buttons 22 are not pressed, the button lock 100 is unlocked. In this case, as described above, the opening / closing operation can be performed by rotating the operation knob 4. The opening / closing operation of the operation knob 4 as used herein means an operation of switching the position of the operation knob 4 from the OPEN position 25 to the LOCK position 26 or from the LOCK position 26 to the OPEN position 25. Hereinafter, the former operation is referred to as a "closing operation", and the latter operation is referred to as an "opening operation".

Further, as shown in FIG. 2, a setting change switch 11 is provided on the back side of the button lock 100. The setting change switch 11 is a switch used when changing the setting of the unlocking code of the button lock 100. The button lock 100 can arbitrarily set the unlocking code of the button lock 100 by using the setting change switch 11. In the normal use of the button lock 100, the setting change switch 11 is set to the fixed position 30a (see FIG. 3) described later. The details of the method of setting the unlocking code in the button lock 100 will be described later.

<Cylinder lock mechanism>
The button lock 100 includes a cylinder lock mechanism (hereinafter referred to as “cylinder”) 5 for forcibly unlocking the button lock 100 when the user forgets the unlocking code (see FIG. 7). The cylinder 5 is interposed between the operation knob 4 and the stopper 10, and the restriction on the operation of the operation knob 4 can be forcibly released by using a predetermined unlocking key.

FIG. 7 is a cross-sectional view of the button lock 100 passing through a vertical cross section of the cylinder 5 along the axial direction. FIG. 8 is a diagram showing a connected state of the cylinder 5 and the stopper 10. The cylinder 5 is a locking mechanism having a key hole 5a formed along the axial direction thereof, and an operation knob 4 is integrally mounted on the front end side thereof. The cylinder 5 is rotatably held inside the outer cylinder 6. FIG. 9 is a diagram showing a state in which the cylinder 5 is mounted on the inner peripheral side of the outer cylinder 6. The outer cylinder 6 is arranged inside the cylindrical sleeve portion 27 formed as a part of the upper case 2. An indicator 13 is fitted in the front end of the cylindrical sleeve portion 27. A drive shaft 12 is connected to the rear end of the cylinder 5, and a stopper 10 is attached to the cylinder 5 via the drive shaft 12. In other words, the stopper 10 is integrally fixed to the cylinder 5 via the drive shaft 12. In addition, FIGS. 1 and 7
As shown in the above, the front end side of the cylinder 5 and the outer cylinder 6 is covered with the operation knob 4. The outer cylinder 6 is rotatably attached to the cylindrical sleeve portion 27 of the upper case 2. Further, a cylinder 5 is rotatably and slidably mounted on the inner peripheral side of the outer cylinder 6. In the normal state, the cylinder 5 is locked to the outer cylinder 6, and the cylinder 5 has a cylinder 5 with respect to the outer cylinder 6 except when an emergency unlocking key or a cylinder exchange key is inserted into the key hole 5a of the cylinder 5. Relative rotation and sliding are regulated (prohibited). Further, the operation knob 4 is formed with a key insertion hole 4a that penetrates the operation knob 4 in the axial direction. The key insertion hole 4a is a through hole for guiding the cylinder exchange key or the emergency unlocking key to the key hole 5a of the cylinder 5. Since the techniques for emergency unlocking of a cylinder lock using an emergency unlocking key and cylinder replacement using a cylinder exchange key are known, detailed description thereof is omitted here.

<Button lock mechanism>
Next, the button lock mechanism in the button lock 100 will be described in detail. FIG. 10 is a front view of the button lock 100 with the front panel 21 removed. FIG. 11 is a front view of the button lock 100 with the front panel 21 and the upper case 2 removed. 12 and 13 are views for explaining the internal structure of the button lock 100. Inside the housing in the button lock mechanism area (the area surrounded by the alternate long and short dash line in FIG. 10) where the push button 22 of the button lock 100 is arranged, the guide plate 7 and the middle plate are formed from the upper case 2 side (front side). 8. Rod return plates 9 are arranged side by side in this order. The middle plate 8 is a plate member fixed to the lower case 3, and divides the inside of the housing in the button lock mechanism region into two spaces. Hereinafter, in the inside of the housing in the button lock mechanism region, the storage space in front of the middle plate 8, that is, the storage space defined by the middle plate 8 and the upper case 2 is referred to as a “first storage portion”. Further, in the inside of the housing in the button lock mechanism region, the storage space behind the middle plate 8, that is, the storage space defined by the middle plate 8 and the lower case 3 is referred to as a “second storage portion”.

[Operating rod]
As shown in FIG. 13, a plurality of operating rods 32 are extended along the front-rear direction of the button lock 100 inside the housing of the button lock 100. The operation rod 32 is inserted into an insertion hole provided in the upper case 2, and is arranged so that the head side protrudes into the space between the upper case 2 and the front panel 21.

FIG. 14 is a diagram showing an operation rod 32 of the button lock 100. The operation rod 32 has a body portion main body 321 and a neck portion 322 and a head portion 323 from one end side in the longitudinal direction. The body portion main body 321 of the operating rod 32 has a substantially quadrangular prism shape. On the other hand, the neck portion 322 and the head portion 323 have a substantially cylindrical shape, and these have a smaller cross section than the body portion main body 321. The operation rod 32 can insert the neck portion 322 and the head portion 323 into the rod insertion hole 29 (see FIG. 37, etc.) of the upper case 2, but cannot insert the body portion main body 321. It has become like. Further, a constricted portion having a constricted shape is formed at the boundary portion between the neck portion 322 and the head portion 323 of the operating rod 32.

The operating rod 32 has a rod spring 324 for holding the rod in a state where the rod insertion hole 29 is inserted from the inner surface side of the upper case 2 through the head 323, and the front wall 2a of the upper case 2 (see FIG. 15). It is interposed between the operating rod 32 and the constricted portion of the operating rod 32. The rod spring 324 exerts an elastic force on the upper case 2 in the direction of pulling out the operating rod 32. Further, a push button 22 is positioned on the head portion 323 of each operation rod 32 (see FIG. 24 described later). Further, a groove portion 325 is provided at the rear end of the body portion main body 321 of the operating rod 32. The groove bottom of the groove portion 325 is formed as an inclined surface 325a inclined with respect to the axial direction of the operating rod 32.

Further, as shown in FIG. 14, the body portion main body 321 of the operating rod 32 is provided with a plurality of pairs of recesses. Reference numerals 321a and 321a are first recessed pairs, and reference numerals 321b and 321b are second recessed pairs. The first recessed pair 321a, 321a and the second recessed pair 321b, 321b are formed at a corner portion forming a boundary between the bottom surface and the side surface of the body portion main body 321 with respect to the axial direction (longitudinal direction) of the body portion main body 321. The second recess pairs 321b and 321b are formed inward as compared with the first recess pairs 321a and 321a. Further, the shapes and sizes of the first recess pair 321a, 321a and the second recess pair 321b, 321b are the same.

Further, the body portion main body 321 of the operating rod 32 is provided with a third recess pair 321c, 321c and a fourth recess pair 321d, 321d. The third recesses 321c, 321c and the fourth recesses 321d, 321d also have the same angle as the first recesses 321a, 321a and the second recesses 321b, 321b, which form a boundary between the bottom surface and the side surface of the body body 321. It is formed in the part. In the axial direction of the body body 321 of the operating rod 32, the third recess pairs 321c and 321c are arranged on the front end side of the second recess pairs 321b and 321b, and the fourth recess pairs 321d and 321d are further arranged on the third recess pair. It is arranged on the front end side of 321c and 321c. The shapes and sizes of the third recess pair 321c and 321c and the fourth recess pair 321d and 321d are the same.

Further, the body portion main body 321 of the operating rod 32 is provided with a first convex portion pair 321e, 321e, a second convex portion pair 321f, 321f, and a third convex portion pair 321g, 321g. The first convex portion pair 321e, 321e, the second convex portion pair 321f, 321f, and the third convex portion pair 321g, 321g are formed at a corner portion forming a boundary between the upper surface and the side surface of the body portion main body 321. The parts are arranged in this order from the rear end side of the main body 321. The shapes and sizes of the first convex portion pair 321e, 321e, the second convex portion pair 321f, 321f, and the third convex portion pair 321g, 321g are the same.

FIG. 15 is a diagram showing a relative relationship between the operating rod 32 of the button lock 100 and the push button 22. The push button 22 has a button portion 221 having a smaller cross-sectional area than the button opening 211 formed on the front panel 21, and a base portion 222 having a larger cross-sectional area than the button opening 211. The base portion 222 of the push button 22 is arranged on the back side of the front panel 21 to prevent the push button 22 from falling out of the button opening 211 of the front panel 21. A button spring 223 is mounted on the back side of the base portion 222 of the push button 22. The button spring 223 is sandwiched between the base portion 222 of the push button 22 and the upper case 2 in a contracted state, and presses the push button 22 in a direction of projecting toward the front side of the front panel 21. .. In FIG. 15, the rod spring 324 is not shown.

As described above, the push button 22 in the button lock 100 is always pressed by the button spring 223 in the direction of being pushed out from the button opening 211. Further, the operating rod 32 is always pressed by the rod spring 324 in the direction of being pushed out from the rod insertion hole 29. When the user pushes the push button 22 against the urging force of the button spring 223, the base portion 222 of the push button 22 pushes the head portion 323 of the operation rod 32 into the housing, and as a result, the push button 22 The operation rod 32 is also displaced in the axial direction in conjunction with the push operation. After that, when the user's finger is released from the push button 22, the push button 22 is returned to the initial position shown in FIG. 1 or the like by the elastic force of the button spring 223. The initial position of the push button 22 means a position where the push button 22 is not buried in the housing, as shown in FIG. 1 and the like.

Next, the movable block 33 that is detachably attached to the operating rod 32 will be described. The third concave portion pairs 321c, 321c, the fourth concave portion pair 321d, 321d, the first convex portion pair 321e, 321e, the second convex portion pair 321f, 321f, and the third convex portion pair 321g, 321g in the operation rod 32 are shown in the drawings. It is used when the movable block 33 (movable body) shown in 5 and 6 and the like is attached by fitting.

FIG. 16 is a diagram showing a state in which the movable block 33 is attached to the operating rod 32. In FIG. 16, the push button 22 is not shown. FIG. 17 is a perspective view of the movable block 33. The button lock 100 is configured such that one movable block 33 is detachably attached to each operation rod 32. As shown in FIG. 17, the movable block 33 is a member having a substantially U-shaped shape, and has a bottom wall portion 331 and a pair of side wall portions 332 erected from both ends of the bottom wall portion 331.

Inside the upper end of the side wall portion 332 of the movable block 33, block-side first recess pairs 333a, 333a and block-side second recess pairs 333b, 333b are provided at predetermined intervals. Further, block-side convex portions 333c, 333c are provided at substantially intermediate positions between the block-side first concave portions 333a, 333a and the block-side second concave portions 333b, 333b, and inside the lower end of the bottom wall portion 331. ing. The block-side first concave portions 333a, 333a of the movable block 33 can selectively accept the first convex portion pairs 321e, 321e or the second convex portions pairs 321f, 321f in the operating rod 32, and the block-side second concave portion pairs 321f, 321f. The concave portion pair 333b, 333b can selectively accept the second convex portion pair 321f, 321f or the third convex portion pair 321g, 321g in the operating rod 32. Further, the block-side convex portions 333c and 333c of the movable block 33 can be selectively fitted to the third concave portion pairs 321c and 321c or the fourth concave portion pairs 321d and 321d in the operating rod 32.

In the example shown in FIG. 16, the block-side first concave portions 333a, 333a, the block-side second concave portions 333b, 333b, and the block-side convex portions 333c, 333c of the movable block 33 are the first convexes of the operating rod 32, respectively. The movable block 33 is held at the first holding position of the operating rod 32 by engaging with the portion pair 321e, 321e, the second convex portion pair 321f, 321f, and the third concave portion pair 321c, 321c. Further, as shown in FIG. 18, the operating rod 32 can hold the movable block 33 at the second holding position on the front end side (head 323 side) as compared with the first holding position. Here, it can be said that the second holding position of the operating rod 32 is a position relatively closer to the push button 22 than the first holding position. When the movable block 33 is held in the second holding position of the operation rod 32, the block side first concave portion pair 333a, 333a and the block side second concave portion pair 333b, 333b are the second convex portion pair in the operation rod 32, respectively. 321f, 321f and the third convex portions 321g and 321g are accepted, and the block side convex portions 333c and 333c are fitted to the fourth concave portions 321d and 321d of the operating rod 32. As described above, the movable block 33 can selectively switch the position held with respect to the operating rod 32 between the first holding position and the second holding position. Further, a recess 334 having a substantially quadrangular pyramid shape is provided on the outer surface of the bottom wall portion 331 of the movable block 33.

[Middle plate]
19 to 21 are views for explaining the middle plate 8. FIG. 19 is a perspective view of the front side of the middle plate 8. FIG. 20 is a front view of the middle plate 8. FIG. 21 is a perspective view of the back side of the middle plate 8. The middle plate 8 is a plate member having a substantially rectangular planar shape fixed to the upper case 2. The middle plate 8 is provided with as many block accommodating recesses 81 as the number of operating rods 32 capable of accommodating the movable block 33. The block accommodating recess 81 is open so as to face the first accommodating portion side in the housing. The block accommodating recess 81 has a slightly larger cross section than the movable block 33. Further, the bottom of the block accommodating recess 81 supports the movable block 33 accommodated in the block accommodating recess 81. Further, a rod insertion hole 81a is formed at the bottom of the block accommodating recess 81, and each operating rod 3 is formed in the rod insertion hole 81a.
The body body 321 of No. 2 can be inserted. Reference numeral 82 is a sleeve for guiding the search pin 34. A through hole 83 for inserting the search pin 34 is formed in the region of the middle plate 8 surrounded by the sleeve 82.

The opening cross-sectional area of the rod insertion hole 81a in the middle plate 8 is smaller than the cross section of the movable block 33 and slightly larger than the cross section of the body portion main body 321 of the operating rod 32. In the operating rod 32, the head portion 323 and the neck portion 322 are inserted into the rod insertion hole 29 of the upper case 2, and the body portion main body 321 is inserted into the rod insertion hole 81a of the middle plate 8. As a result, the operation rod 32 is maintained in the normal posture as shown in FIG. 13 without tilting the posture in the first housing portion of the housing.

[Guide plate / slide rod / rod return plate]
FIG. 22 is a front view of the guide plate 7. FIG. 23 is a perspective view of the back side of the guide plate 7. The guide plate 7 is provided with a through hole 71 for accommodating the operation rod 32 and the movable block 33 attached to the operation rod 32. The through hole 71 has a shape similar to a combination of a quadrangle and an ellipse, and penetrates the guide plate 7 in the thickness direction. Further, the through hole 71 in the guide plate 7 is provided at a position corresponding to the push button 22 of the button lock 100. Hereinafter, among the through holes 71 in the guide plate 7, a portion exhibiting a substantially quadrangular shape is referred to as a “block accommodating hole portion 71a”, and a portion exhibiting a substantially elliptical shape is referred to as a “search pin insertion hole portion 71b”. As shown in FIGS. 22 to 24, the block accommodating hole 71a of the guide plate 7 accommodates the movable block 33 held by the body portion main body 321 of the operating rod 32. The movable block 33 is slidable along the axial direction of the operating rod 32 in a state of being housed in the block housing hole 71a. On the other hand, the search pin 34 (see FIG. 19 and the like) is inserted into the search pin insertion hole 71b of the guide plate 7. The search pin 34 is a member used to search for the unlocking code (password) of the button lock 100. Since the technique for searching the unlocking code using the search pin 34 is known, detailed description thereof is omitted here.

As shown in FIG. 13, the guide plate 7 is arranged along the front surface of the middle plate 8. While the middle plate 8 is fixed to the upper case 2, the guide plate 7 is slidably arranged in the housing (first accommodating portion) in the vertical direction, that is, in the direction orthogonal to the sliding direction of the operating rod 32. Will be done. At that time, the guide plate 7 slides in a state of being in sliding contact with the middle plate 8. In this embodiment, the sliding direction of the operating rod 32 is parallel to the axial direction of the outer cylinder 6 and the cylinder 5. A state in which each of the block accommodating holes 71a of the guide plate 7 coincides with the block accommodating recess 81 of the middle plate 8, that is, a state in which the positions of the corresponding block accommodating holes 71a and the block accommodating recess 81 overlap in the front-rear direction. The position of the guide plate 7 is defined as the "first reference position". Further, as shown in FIGS. 22 to 24, the guide plate 7 has a pin-shaped spring holding portion 72 protruding downward from the lower short side. A guide spring 73 is attached to the spring holding portion 72 of the guide plate 7. The guide spring 73 attached to the spring holding portion 72 is sandwiched between the lower short side of the guide plate 7 and the inner wall surface of the upper case 2 and is held in a contracted state. As a result, an urging force acts on the guide plate 7 in the direction in which the guide spring 73 tends to extend. That is, the guide spring 73 presses the guide plate 7 upward in the housing. Further, a square hole portion 74 is provided in the lower corner portion of the guide plate 7. A fan-shaped portion 1160 of the setting change switch 11 is inserted into the square hole portion 74 (see FIG. 22).

Further, as shown in FIG. 23, an accommodating recess 75 capable of accommodating the slide rod 50 is formed on the back surface (rear surface) side of the guide plate 7. The slide rod 50 in the accommodating recess 75 is slidable within a predetermined range along the axial direction of the slide rod 50. More specifically, the sliding direction of the slide rod 50 with respect to the guide plate 7 coincides with the sliding direction of the guide plate 7 in the first housing portion of the housing. FIG. 24 shows a state in which the slide rod 50 is housed in the housed recess 75 of the guide plate 7. The slide rod 50 housed in the housing recess 75 of the guide plate 7 can slide relative to the guide plate 7. In FIG. 24, the middle plate 8 is not shown.

FIG. 25 is a perspective view showing the slide rod 50. The slide rod 50 has a shaft body portion 51 and a plurality of arm portions 52 projecting from the side of the shaft body portion 51. The arm portion 52 of the slide rod 50 is provided corresponding to the push button 22. Further, a protrusion 53 having a substantially triangular shape in a side view is formed at the tip of each arm 52. The protrusion 53 of the arm 52 can engage with the recess 334 having a substantially pyramidal shape formed in the movable block 33. The engagement between the protrusion 53 on the slide rod 50 and the recess 334 on the movable block 33 and the disengagement thereof will be described later.

Further, a rectangular rod through hole 54 (see FIG. 25) is formed in the vicinity of the end portion of the shaft body portion 51 of the slide rod 50. The opening width of the rod through hole 54 in the axial direction of the shaft main body 51 is larger than the width of the rising portion 92 (see FIG. 26) of the rod return plate 9. As a result, the rising portion 92 of the rod return plate 9 can be slid within a predetermined range while the rising portion 92 of the rod return plate 9 is inserted into the rod through hole 54. As shown in FIGS. 19 and 22, the middle plate 8 and the guide plate 7 are also formed with openings 84 and 77 through which the rising portion 92 of the rod return plate 9 is inserted. The rising portion 92 can be sequentially inserted into the opening 84 of the middle plate 8, the rod through hole 54 of the slide rod 50, and the opening 77 of the guide plate 7. The details of the rising portion 92 of the rod return plate 9 will be described later. Further, in the guide plate 7 of the present embodiment, the opening 77 is connected to the square hole portion 74, but the guide plate 7 is not limited to this.

Further, an arm control portion 55 having a rod shape is projected from the side at the lower end portion of the shaft main body portion 51 of the slide rod 50. A collar portion 551 is formed in the middle of the arm control unit 55, and the collar portion 551 causes the arm control unit 55 to be formed into a first region portion 552 on the distal end side and a second region portion 553 on the proximal end side. It is divided. A first spring 554 and a second spring 555 are attached to the first region portion 552 and the second region portion 555 of the arm control unit 55, respectively. The arm control unit 55 of the slide rod 50 can control (change) the posture of the arm 36 shown in FIG.

Explaining the outline of the arm 36 with reference to FIG. 11, the arm 36 has a bearing portion 361 having a cylindrical shape, a connecting portion 362 projecting from the bearing portion 361, and a rotation stopper 363. The bearing portion 361 of the arm 36 is rotatably supported by a rotating shaft 37 projecting from the back surface of the upper case 2. Further, the connecting portion 362 and the rotation stopper 363 of the arm 36 project from the bearing portion 361 in opposite directions to each other. A connecting claw having a substantially U shape is formed at the end of the connecting portion 362, and by connecting the flange portion 551 of the arm control unit 55 to the connecting claw, the arm control unit 55 and the arm 36 can be connected. You are connected. As a result, when the slide rod 50 held (accommodated) in the guide plate 7 slides in the housing in the vertical direction, the posture of the arm 36 can be changed in conjunction with the slide rod 50. Details regarding the operating status of the arm 36 will be described later.

As shown in FIG. 11, the first spring 554 and the second spring 555 are attached to the first region portion 552 and the second region portion 553 of the arm control unit 55 of the slide rod 50 in a contracted state, respectively. The first spring 554 is sandwiched between the connecting portion 362 of the arm 36 and the side wall of the upper case 2, and urges the connecting portion 362 upward. Further, the second spring 555 is sandwiched between the connecting portion 362 of the arm 36 and the lower end portion of the shaft main body portion 51, and urges the slide rod 50 upward. Further, the rotation stopper 363 of the arm 36 can be engaged with the opening operation restriction locking piece 66 provided on the outer peripheral portion of the outer cylinder 6 depending on its posture. As will be described in detail later, when the opening operation restriction locking piece 66 of the outer cylinder 6 is locked by the rotation stopper 363, the rotation operation of the outer cylinder 6 in the direction corresponding to the opening operation of the operation knob 4 is performed. It is regulated (restricted). In the state shown in FIG. 11, the button lock 100 is in the locked state, and the opening operation restriction locking piece 66 of the outer cylinder 6 is locked by the rotation stopper 363. On the other hand, when the opening operation restriction locking piece 66 of the outer cylinder 6 is not locked to the rotation stopper 363, the rotation operation of the outer cylinder 6 in the direction corresponding to the opening operation of the operation knob 4 is not restricted.

Next, the details of the rod return plate 9 will be described. FIG. 26 is a perspective view of the front side of the rod return plate 9. The rod return plate 9 is slidably accommodated in the vertical direction in the second accommodating portion of the housing. The sliding direction of the rod return plate 9 is a direction orthogonal to the sliding direction of the operating rod 32 and coincides with the sliding direction of the guide plate 7.

The rod return plate 9 has a plate-shaped plate main body 93 and a rising portion 92 that stands upright from the plate main body 93. The rising portion 92 is provided at the center portion in the width direction and near the lower end portion of the plate main body portion 93, and extends along the long side direction of the plate main body portion 93. Further, the tip of the rising portion 92 is formed with a tip stepped portion 921 having a width one step narrower than that of other portions. As shown in FIG. 27, the clear button 23 shown in FIG. 1 and the like engages with the button grip portion 231 for the user to grip and the tip step portion 921 of the rising portion 92 provided on the rod return plate 9. It has a mating engaging portion 232. The button lock 100 is assembled in a state where the tip step portion 921 of the rising portion 92 of the rod return plate 9 is engaged with the engaging portion 232 of the clear button 23. As a result, when the clear button 23 is slid, the rod return plate 9 also slides in conjunction with it.

Further, a plurality of claw portions 91 and a plurality of inclined protrusions 94 are provided on the surface of the plate body portion 93 of the rod return plate 9. The claw portion 91 and the inclined protrusion portion 94 in the plate main body portion 93 are arranged close to each other so as to correspond to each push button 22. Here, the claw portion 91 of the rod return plate 9 is selectively fitted to any of the first recessed pairs 321a, 321a and the second recessed portions 321b, 321b in the body portion main body 321 of the operating rod 32. It has become. A state in which the operating rod 32 is held by the rod return plate 9 by fitting the claw portion 91 of the rod return plate 9 into any of the first recessed pairs 321a, 321a and the second recessed pair 321b, 321b. It becomes. Then, the holding state of the operating rod 32 by the rod return plate 9 is changed by switching the mating partner to which the claw portion 91 fits between the first recessed pair 321a, 321a and the second recessed pair 321b, 321b. NS.

The rod return plate 9 is slidably held in the housing in the vertical direction. FIG. 13 is a diagram illustrating an "initial reference position" of the guide plate 7, the slide rod 50, and the rod return plate 9. In FIG. 13, the guide plate 7, the slide rod 50, and the rod return plate 9 are all arranged at the initial reference positions. When the rod return plate 9 and the guide plate 7 are in the "initial reference position" shown in FIG. 13, the claw portion 91 is located behind the corresponding operating rod 32, respectively, and the first recessed pair 321a, 321a and the second It can be fitted into either the recess pair 321b or 321b (see FIG. 13). A holding pin 98 projects downward from the lower short side of the plate body 93, and a rod return plate spring 97 is attached to the holding pin 98. The rod return plate spring 97 is interposed between the protruding piece 300 (see FIG. 11) protruding from the inner surface of the lower case 3 and the plate main body 93. The rod return plate 9 is always pressed upward inside the housing by the urging force of the rod return plate spring 97.

Further, the rod return plate 9 has a side arm 95 that projects laterally from the middle portion of the long side of the plate main body 93. As shown in FIG. 27, the side arm 95 is fitted into a substantially U-shaped engaging recess 381a in the hook base 38. The hook base 38 is a member connected to the arm 39 with a hook. FIG. 28 is a rear view of the button lock 100 with the rear panel 30 and the stopper 10 removed. FIG. 29 is a diagram illustrating a connecting structure of the hook base 38 and the arm 39 with a hook. As shown in FIG. 28, the hooked arm 39 is provided on the outside of the housing along the outer surface of the lower case 3. Further, as shown in FIG. 28, the lower case 3 is provided with a substantially rectangular opening window 301. The opening window 301 is a vertically long opening hole of the button lock 100 in the vertical direction.

As shown in FIGS. 27 and 29, the hook base 38 includes a base portion 381 having an engaging recess 381a, a slide insertion portion 382 provided in the base portion 381 and insertable into the opening window 301, and a slide insertion portion 382. It has a shaft portion 383 and a shaft portion 383 which is projected from the above. The base portion 381 of the hook base 38 is arranged on the inner surface side of the lower case 3, that is, the inner surface side of the housing. Further, the base portion 381 has a projected area larger than that of the opening window 301, and cannot pass through the opening window 301. By inserting the slide insertion portion 382 of the hook base 38 into the opening window 301, the slide insertion portion 382 can be slidable within a predetermined range along the long side direction of the opening window 301, that is, the vertical direction of the button lock 100. The shaft portion 383 projects to the outside of the lower case 3 as shown in FIG. 28. Further, the shaft portion 383 pivotally supports the connecting portion 391 formed at one end of the hooked arm 39 so as to be relatively rotatable, and is connected to the connecting portion 391.

The hooked arm 39 has a claw-shaped hook 392 formed at the opposite end of the connecting portion 391, and a mooring portion 394 formed at an intermediate portion and mooring one end of the hook spring 393. Further, as shown in FIG. 28, one end of the hook spring 393 is moored to a spring mooring piece 302 projecting from the outer surface of the lower case 3. Further, as shown in FIG. 28, a circular opening 303 is formed in the lower case 3, and a part of the drive shaft 12 is exposed to the outside of the housing through the opening 303. FIG. 30 is a perspective view of the drive shaft 12. The drive shaft 12 has a first connecting portion 121 that is integrally connected by fitting the rear end portion of the cylinder 5, a second connecting portion 122 that is connected to the stopper 10, a first connecting portion 121, and a second connecting portion. The middle section 123 located in the middle of the section 122 is included. A cross-shaped concave portion 121a is formed on the connecting end surface of the first connecting portion 121 with the rear end portion of the cylinder 5, and a cross-shaped convex portion (not shown) formed at the rear end portion of the cylinder 5. Is fitted into the recess 121a, so that the first connecting portion 121 is integrally connected to the cylinder 5. However, it goes without saying that various shapes can be adopted for the concave portion 121a and the convex portion fitted to the concave portion 121a. Further, the second connecting portion 122 of the drive shaft 12 can be integrally connected to the stopper 10 via the stopper screw 10a (see FIGS. 2, 3 and the like).

As shown in FIG. 30, the middle stage portion 123 of the drive shaft 12 has a substantially C shape, and one end of the middle stage portion 123 has a claw portion 123a that can be engaged with the hook 392 of the hooked arm 39. Is formed. In the button lock 100 of the present embodiment, as shown in FIG. 28, the middle stage portion 123 and the second connecting portion 122 of the drive shaft 12 are located outside the housing, specifically, outside the lower case 3 through the opening 303 formed in the lower case 3. Assembled in an exposed state. Further, the hooked arm 39 is always urged by the elastic force of the hook spring 393 in a direction that brings the hook 392 closer to the middle stage portion 123 of the drive shaft 12. As shown in FIG. 28, an opening 304 is formed in the lower case 3, and a setting change switch 11 is inserted through the opening 304.

Next, the automatic locking mechanism of the button lock 100 will be described. The automatic locking mechanism of the button lock 100 includes a latch 110, a finger 40, a lever 41, a holder 42, a belt 43, a belt spring 434 and the like. FIG. 31 is a diagram showing a state in which the finger 40 is attached to the latch 110. FIG. 32 is a diagram showing details of the finger 40.

Here, the latch 110 has a latch main body 111, a latch shaft portion 112 provided on the latch main body 111, a latch spring 113 mounted on the latch shaft portion 112, and the like. Hereinafter, of the latch shaft portions 112, the end portion connected to the latch main body 111 is referred to as a base end portion 112a, and the end portion on the opposite side is referred to as a tip end portion 112b (see FIG. 31). A retaining portion 114 having a diameter larger than that of the latch shaft portion 112 is provided on the tip end portion 112b side of the latch shaft portion 112.

Further, the finger 40 has an annular main body portion 401 and an operating arm portion 402 extending from the main body portion 401. On the tip end side of the operating arm portion 402, an operating surface 402a extending parallel to the axial direction of the operating arm portion 402 and an inclined surface 402b inclined with respect to the operating surface 402a are formed. The main body 401 of the finger 40 has an insertion hole 401a having an inner diameter slightly larger than the outer diameter of the latch shaft 112, and is slidably fitted into the latch shaft 112 along the latch shaft 112. There is. A protrusion 403 is projected from the main body 401 at a position displaced by about 90 ° from the connection portion with the operating arm 402. Further, among the protrusions 403, the reference numeral 403a is referred to as a “first contact surface”, and the reference numeral 403b is referred to as a “second contact surface”. The protrusion 403 of the finger 40 is slidably housed in the guide groove provided in the rear panel 30, and the details will be described later. As shown in FIG. 11, an opening window 307 is formed in a portion of the lower case 3 corresponding to the latch shaft portion 112 of the latch 110, and the operating arm portion 402 of the finger 40 passes through the opening window 307. It is inserted inside the housing.

33 and 34 are perspective views of the outer cylinder 6. Reference numeral 61 is a belt guide that guides the belt 43 shown in FIG. 35. FIG. 35 is a diagram showing a belt 43. The belt guide 61 is a band-shaped recess formed on the outer peripheral surface of the outer cylinder 6, and is formed along the circumferential direction of the outer cylinder 6. An L-shaped belt mooring protrusion 62 for mooring the end of the belt 43 is provided on one end side of the belt guide 61. The belt 43 shown in FIG. 35 includes a belt-shaped belt main body 431, a first connecting portion 432 provided at one end of the belt main body 431, and a second connecting portion 433 provided at the other end of the belt main body 431. The first connecting portion 432 is moored by hooking the square hole 432a on the belt mooring projection 62. The belt main body portion 431 of the belt 43 is a band-shaped member having appropriate flexibility (flexibility) and durability, and may be made of polypropylene, fluororesin, PEEK, or the like, for example. The second connecting portion 433 of the belt 43 has a mooring hole 433a for mooring one end 434a of the belt spring 434. FIG. 36 is a diagram showing a state in which the first connecting portion 432 is moored to the belt mooring projection 62 of the outer cylinder 6 and the belt main body portion 431 of the belt 43 is arranged along the belt guide 61. The width of the belt guide 61 is slightly wider than the width of the belt main body 431, but the clearance between the belt guide 61 and the belt main body 431 is such that the belt 43 (belt main body 431) has an outer cylinder. It is adjusted so as not to be excessively inclined with respect to the axial direction of 6. The other end 434b of the belt spring 434 is locked in the locking hole 201 provided in the upper case 2 (see FIGS. 10, 11, 37, etc.). FIG. 37 is a view of the upper case 2 as viewed from the inner surface side.

Returning to FIGS. 33 and 34, further explaining the outer cylinder 6, an opening operation restricting locking piece 66 is projected in the radial direction on the outer peripheral surface of the outer cylinder 6 so as to be adjacent to the belt mooring projection 62. There is. Further, a locking regulation locking piece 67 is projected in the radial direction on the rear end side of the outer peripheral surface of the outer cylinder 6, and is adjacent to the locking regulation locking piece 67 as compared with other parts. A recessed portion 68 having a concave surface is formed.

Next, the lever 41 and the holder 42 will be described. The holder 42 is a member that holds the lever 41. FIG. 38 is a diagram showing a state in which the lever 41 is attached to the holder 42. FIG. 39 is a perspective view showing the details of the holder 42. FIG. 40 is a perspective view showing the details of the lever 41. The holder 42 has a holder body 421 which is a plate member having a substantially triangular shape. A lever support shaft 422 having a cylindrical shape and a spring receiving portion 423 adjacent to the lever support shaft 422 are projected on the surface 421a of the holder main body 421. Further, screw holes 424 are formed at each apex position of the triangle on the holder body 421. The screw hole 424 is a hole through which a screw for fixing the holder body 421 to the upper case 2 is inserted. Further, as shown in FIG. 39, the lever support shaft 422 has a cylindrical shape. As shown in FIG. 37, a boss 202 for fixing the holder is projected on the inner surface of the upper case 2 at a position corresponding to each screw hole 424 of the holder 42. By screwing the screws 425 (see FIG. 11) inserted into the screw holes 424 of the holder 42 into the screw grooves of the bosses 202 of the upper case 2, the surface 421a of the holder body 421 becomes the inner surface of the lower case 3. The holder 42 is fixed to the upper case 2 so as to face each other and the back surface 421b of the holder body 421 faces the inner surface of the upper case 2.

Further, as shown in FIG. 40, the lever 41 projects from the cylindrical bearing portion 411, the detection arm portion 412 extending from the outer peripheral surface of the bearing portion 411, the rotation restricting arm portion 413, and the outer peripheral surface of the bearing portion 411. It has a spring holding portion 414 and the like. The bearing portion 411 of the lever 41 has a bearing hole 411a having an inner diameter equal to or slightly larger than the outer diameter of the lever support shaft 422 in the holder 42. The lever 41 is slidably supported with respect to the lever support shaft 422 by inserting the lever support shaft 422 from one end of the bearing hole 411a in the bearing portion 411 (see FIG. 38). Further, the lever 41 is adapted so that a support shaft (not shown) projecting from the inner surface of the lower case 3 is inserted from the other end side of the bearing hole 411a in the bearing portion 411. That is, the bearing portion 411 of the lever 41 rotates each support shaft with the support shaft projecting from the inner surface of the lower case 3 and the lever support shaft 422 of the holder 42 inserted into the bearing holes 411a from both sides. It is rotatably supported as.

Further, in the lever 41, a pressed surface 412a parallel to the axial direction of the detection arm 412 and an inclined surface 412b inclined with respect to the pressed surface 412a are formed at the tip of the detection arm 412. Further, a tip engaging portion 413a that engages with the locking regulation locking piece 67 of the outer cylinder 6 is formed at the tip of the rotation regulating arm portion 413. Further, the spring holding portion 414 of the lever 41 has a mounting pin 414a for mounting the lever spring 415. As shown in FIG. 38, the lever spring 415 mounted on the mounting pin 414a in the spring holding portion 414 of the lever 41 is sandwiched between the spring receiving portion 423 of the holder 42 and held in a contracted state.

The functions realized in the button lock 100 configured as described above and the operation contents of the button lock 100 will be described.

<Operation during unlocking / locking>
[Operation when unlocking]
The details of the operation of the button lock 100 when it is unlocked and locked will be described in detail. First, the operation when unlocking the locked button lock 100 will be described. When the button lock 100 is locked, the operation knob 4 is aligned with the LOCK position 26 as shown in FIG. Further, as will be described later, when the button lock 100 is locked, all the operating rods 32 are automatically cleared and returned to the clear position in the state where they are not pushed. As shown in FIG. 41, the operating rod 32 returned to the clear position is in a state in which the claw portion 91 of the rod return plate 9 is fitted to the first recessed pair 321a, 321a (hereinafter, "rod first". It is called "holding state").

From this state, when unlocking the button lock 100, the user performs a push operation of the push button 22 according to the set unlock code. When the push button 22 of the button lock 100 is pushed, the operation rod 32 incorporated in the pushed push button 22 slides in the axial direction from the clear position and is pushed into the housing. Hereinafter, the position of the operating rod 32 at this time is referred to as a "pushing position". As shown in FIG. 42, the operating rod 32 displaced from the clear position to the push-in position is in a state in which the claw portion 91 of the rod return plate 9 is fitted into the second recessed pair 321b, 321b (hereinafter, “rod second”. It becomes "holding state"). The claw portion 91 of the rod return plate 9 corresponds to a holding means for holding the operating rod 32 at the pushing position when the operating rod 32 is displaced from the clear position to the pushing position. Further, the claw portion 91 of the rod return plate 9 engages with the second recessed pair 321b, 321b as the engaged portion formed in the operating rod 32 when the operating rod 32 is displaced to the pushing position. It can also be called an engaging part.

The operating rod 32 is displaced from the clear position to the push position by being pushed into the housing when the corresponding push button 22 is pushed. In this way, by the push operation of the push button 22, only the operation rod 32 corresponding to the pushed push button 22 is in the second holding state (see FIG. 42), and the operation rod corresponding to the unpressed push button 22 is used. The rod 32 is maintained in the first holding state (see FIG. 41). When the button lock 100 is unlocked, the push button 22 pushed by the user is always pushed up by the button spring 223, and is therefore buried in the button opening 211 when the user's finger is released. It shifts from the state of being pushed to the state of protruding to the outside (see FIG. 15).

The button lock 100 has a structure in which the unlocking code can be arbitrarily set. The method of setting the unlocking code will be described later, but the button lock 100 is an operation rod attached to the push button 22 corresponding to the unlocking code (hereinafter, also simply referred to as an "operating rod corresponding to the unlocking code". ) 32 and the operating rod 32 attached to the push button 22 that does not correspond to the unlocking code (hereinafter, also simply referred to as “the operating rod that does not correspond to the unlocking code”) 32, the movable block 33 with respect to the operating rod 32. The engaging position (holding position) of is different. Specifically, the movable block 33 is held at the first holding position shown in FIG. 16 for the operating rod 32 that does not correspond to the unlocking code, and the operating rod 32 corresponding to the unlocking code is shown in FIG. 2 The movable block 33 is held at the holding position. The operation of changing the holding position of the movable block 33 with respect to the operating rod 32 depending on whether or not it corresponds to the unlocking code will be described later.

As described above, the movable block 33 is provided with a recess 334, and the recess 334 has a shape complementary to the protrusion 53 of the slide rod 50 (see FIG. 17 and the like). In the state shown in FIG. 13 described above, all the operating rods 32 are in the rod first holding state, and the movable block 33 is attached to the first holding position. Regarding the relationship between the mounting position of the movable block 33 on the operating rod 32 and the holding state of the operating rod 32 by the claw portion 91 of the rod return plate 9, first, the operating rod 32 in the rod first holding state When the movable block 33 is mounted in the first holding position, the positions of the recess 334 of the movable block 33 and the protrusion 53 of the slide rod 50 match, and the protrusion 53 can be fitted into the recess 334. (See FIG. 13). The recess 334 of the movable block 33 corresponds to the fitted portion in the present invention. Further, the protrusion 53 of the slide rod 50 that can be fitted into the recess 334 of the movable block 33 corresponds to the fitting portion in the present invention.

Further, in the present embodiment, the displacement deviation amount of the movable block 33 with respect to the operating rod 32 when the first holding position is changed to the second holding position is such that the operating rod 32 is held in the rod second holding state from the rod first holding state. It is adjusted so as to match the relative movement amount of the operating rod 32 when the state is changed. Therefore, although not shown, when the operating rod 32 is in the rod second holding state, the movable block 33 is mounted in the second holding position instead of the first holding position, so that the concave portion 334 of the movable block 33 is mounted. The position of the protrusion 53 of the slide rod 50 matches the position of the protrusion 53 of the slide rod 50, and the protrusion 53 of the slide rod 50 can be fitted into the recess 334 of the movable block 33.

In other words, when the operating rod 32 in which the movable block 33 is mounted in the first holding position is in the second holding state, or the operating rod 32 in which the movable block 33 is mounted in the second holding position is the second. In the 1-holding state, the positions of the recess 334 of the movable block 33 and the protrusion 53 of the slide rod 50 do not match, and the position is shifted in the front-rear direction (axial direction of the operating rod 32). FIG. 43 is a diagram showing the relative relationship between the recess 334 and the protrusion 53 when the operating rod 32 in which the movable block 33 is mounted in the second holding position is in the first holding state. Since the relative positions of the recess 334 of the movable block 33 and the protrusion 53 of the slide rod 50 are displaced, the protrusion 53 cannot be fitted (accommodated) into the recess 334. In this case, since the top of the protrusion 53 on the slide rod 50 interferes with the edge of the recess 334 in the movable block 33, the protrusion 53 is pushed downward by the depth of the recess 334. Here, the protrusion 53 of the slide rod 50 is provided at the tip of each arm 52. Further, each arm portion 52 is integrated via a shaft main body portion 51. Therefore, if even one of the protrusions 53 of the slide rod 50 is displaced relative to the recess 334 of the movable block 33, the slide rod 50 in the housing slides downward from the initial reference position.

In the example shown in FIG. 44, among the operating rods 32 indicated by reference numerals A to E, the movable block 33 is held in the second holding position for B and D, and A, C and E are movable in the first holding position. Block 33 is held. In the example of this figure, among the operating rods 32 shown by A to E, B and D in which the movable block 33 is held at the second holding position are the operating rods 32 corresponding to the unlocking code. , The operation rod 32 related to the B and D is not pushed. Therefore, in the illustrated example, the push buttons 22 of the button lock 100 are not aligned with the unlocking symbols.

As described above, when the push buttons 22 of the button lock 100 are not aligned with the unlocking code, the positions of the recess 334 of the movable block 33 and the protrusion 53 of the slide rod 50 match with respect to at least one of the operating rods 32. Instead, the slide rod 50 is pushed downward from the initial reference position. Then, as shown in FIGS. 11, 24, 25, etc., the arm control unit 55 in the slide rod 50 pushes down the connecting portion 362 of the arm 36. Since the arm 36 is pivotally supported by the rotating shaft 203 projecting from the inner surface of the upper case 2 and the rotating shaft 37 projecting from the inner surface of the lower case 3, the arm 36 and the connecting portion 362 pushed down by the arm control unit 55. On the contrary, the rotation stopper 363 is pushed up. As a result, the rotation stopper 363 of the arm 36 is locked to the opening operation restricting locking piece 66 of the outer cylinder 6, and the stopper is unlocked in the unlocking direction of the outer cylinder 6 (counterclockwise in FIG. 11). Rotation in the direction (direction in which 10 is switched from the locked posture to the disengaged posture) is restricted. Unless the emergency unlock key or the cylinder exchange key is inserted into the key hole 5a of the cylinder 5, the relative rotation between the cylinder 5 and the outer cylinder 6 is restricted, and the cylinder 5 and the operation knob attached to the cylinder 5 are restricted. The structure is such that relative rotation is not possible with 4. Therefore, when the push buttons 22 of the button lock 100 are not aligned with the unlock code, that is, when the push buttons 22 are not pushed according to the unlock code, the rotation stopper 363 of the arm 36 is the outer cylinder 6 By being locked to the locking piece 66, the opening operation of the operation knob 4 can be restricted.

When all the push buttons 22 corresponding to the unlock code are pushed and none of the push buttons 22 corresponding to the unlock code are pushed, the push button 22 of the button lock 100 is unlocked. It will be in a state where the codes are aligned. In this state, the relative positions of the recess 334 of the movable block 33 and the protrusion 53 of the slide rod 50 are the same for all the operating rods 32, so that the slide rod 50 is pushed down due to interference with the movable block 33. It doesn't happen. In this case, since the rotation stopper 363 of the arm 36 is separated from the outer peripheral surface of the outer cylinder 6, the opening operation restriction locking piece 66 of the outer cylinder 6 is not locked to the rotation stopper 363.

As described above, the cylinder 5 and the stopper 10 are connected via the drive shaft 12 (see FIG. 8). Further, the relative rotation of the cylinder 5 and the outer cylinder 6 is restricted during normal use. On the other hand, in the state where the push buttons 22 of the button lock 100 are aligned with the unlocking code, the opening operation restriction locking piece 66 of the outer cylinder 6 is not locked by the rotation stopper 363. Therefore, the operation knob 4 connected to the outer cylinder 6 and the cylinder 5 can be opened, thereby unlocking the button lock 100 internally. Then, as the operation knob 4 is opened, the cylinder 5 and the stopper 10 rotate integrally. As a result, the stopper 10 can be changed from the locked posture to the disengaged posture, and by disengaging the stopper 10 from the frame 230 of the housing 210, the lock can be unlocked from an external mechanism as well. As a result, the user can open the door 220 of the locker 200.

As described above, the button lock 100 can regulate the operation of the operation knob 4, and releases the restriction on the operation of the operation knob when only the operation rod 32 corresponding to the unlock code is in the pushing position. Equipped with lock control means. The unlocking restricting means includes a recess 334 of the movable block 33, a protrusion 53 of the slide rod 50, a rotation stopper 363 of the arm 36, an opening operation restricting locking piece 66 of the outer cylinder 6, and the like. Then, as shown in the above description of the unlocking operation, the unlocking regulating means is in a state where the push buttons 22 of the button lock 100 are aligned with the unlocking code, that is, the movable block 33 is attached to the first holding position. When all of the operating rods 32 are in the clear position and all of the operating rods 32 in which the movable block 33 is mounted in the second holding position are in the pushing position, the operation knob 4 is opened. The regulation can be lifted.

The button lock 100 according to the present embodiment is internally mechanically unlocked (a state in which the push buttons 22 of the button lock 100 are aligned with the unlocking code) and externally mechanically unlocked (the posture of the stopper 10). Is in the detached position), the structure is such that the closing operation of the operation knob 4 is restricted. 45 to 47 show each component (latch 110, finger 40, lever 41, holder 42, belt 43) constituting the automatic locking mechanism when the button lock 100 is in the unlocked state mechanically and externally. , Belt spring 434). FIG. 45 (a) shows a partial perspective view of the button lock 100 in the automatic locking mechanism, and FIG. 45 (b) shows a partial plan view of the button lock 100 in the automatic locking mechanism. Reference numeral 313 shown in FIG. 45 is a latch accommodating hole formed inside the latch cover portion 310 for accommodating the latch main body 111, the latch shaft portion 112, the latch spring 113, and the like constituting the latch 110. It is a hollow part. The latch accommodating hole 313 communicates with the inside of the housing through the opening window 307 of the lower case 3 shown in FIG. Further, as shown in FIGS. 31, 32, 45, etc., inside the latch accommodating hole 313, the operating arm portion 402 of the finger 40 has an inclined surface 402b facing the latch main body 111 side and an operating surface 402a. Is arranged so as to face the pressed surface 412a of the detection arm portion 412 of the lever 41.

Further, as shown in FIGS. 2, 3 and 45 (b) and the like, the tip portion 11 of the latch shaft portion 112
On the 2b side, an insertion hole 312 formed in the latch cover portion 310 is inserted, and the retaining portion 114 provided at the tip portion 112b (see FIG. 31 and the like) of the latch shaft portion 112 is outside the latch cover portion 310. It is arranged (outside the latch accommodating hole 313). Here, the diameter of the insertion hole 312 of the latch cover portion 310 is larger than the diameter of the latch shaft portion 112 and smaller than the retaining portion 114. As a result, the latch 110 is accommodated in the latch accommodating hole 313 so as to be retractable, and the latch 110 is suppressed from falling out (falling out) from the latch accommodating hole 313. One end of the latch spring 113 mounted on the latch shaft portion 112 of the latch 110 is in contact with the inner surface of the latch cover portion 310, more specifically, the inner wall surface of the peripheral edge of the insertion hole 312, and the inner wall surface of the peripheral edge is a spring. It is functioning as a receiver.

Further, as shown in FIG. 31, the finger 40 is attached to the latch shaft portion 112 in a state of being sandwiched between the latch main body 111 and the latch spring 113 in the latch 110. Further, the other end of the latch spring 113 mounted on the latch shaft portion 112 of the latch 110 is a side surface of the main body portion 401 of the finger 40 that is slidably fitted to the latch shaft portion 112 along the latch shaft portion 112. Is constantly pressed. That is, the finger 40 (main body 401) is always pressed against the latch main body 111 by the latch spring 113 arranged so as to be sandwiched between the inner surface of the latch cover portion 310 and the finger 40. In this way, the pressing force of the latch spring 113 is transmitted to the latch main body 111 via the main body 401 of the finger 40. As a result, the latch main body 111 and the finger 40 in the latch 110 are integrally urged by the latch spring 113 in the direction of protruding from the latch accommodating hole 313. As shown in FIG. 31, the latch main body 111 has a first pressed surface 111a and a second pressed surface 111b. The first pressed surface 111a is a surface that comes into contact with the frame 230 of the housing 210 and is pressed when the door 220 is closed. On the other hand, the second pressed surface 111b comes into contact with the frame 230 of the housing 210 and is pressed when the door 220 is opened.

By the way, as described above, the holder 42 that holds the lever 41 is an immovable member fixed to the inner surface of the upper case 2. Therefore, the elastic force of the lever spring 415 that is mounted on the mounting pin 414a of the spring holding portion 414 of the lever 41 and is sandwiched and contracted between the spring receiving portion 423 of the holder 42 is the rotation restricting arm of the lever 41. It acts in the direction of pressing the tip engaging portion 413a of the portion 413 against the outer peripheral surface of the outer cylinder 6. Further, FIG. 48 is a diagram illustrating a guide groove 311 formed inside the latch cover portion 310. Inside the latch cover portion 310, a guide groove 311 is provided to loosely fit the protrusion 403 projecting from the main body portion 401 of the finger 40. The guide groove 311 extends parallel to the axial direction in which the latch shaft portion 112 extends, and the protrusion 403 of the finger 40 can be slidably guided along the guide groove 311. As shown in FIG. 48, the guide groove 311 communicates with the latch accommodating hole 313. Of the inner walls of the latch cover portion 310 forming the guide groove 311, reference numeral 311a is a “guide front wall” and reference numeral 311b is a “guide rear wall”.

As shown in FIGS. 45 to 47, when the button lock 100 is in the unlocked state mechanically and externally, the tip engaging portion 413a of the rotation restricting arm portion 413 of the lever 41 is attached to the outer cylinder 6. As a result of being positioned in the recessed portion 68, the tip engaging portion 413a of the lever 41 is in a state of locking the lock regulation locking piece 67 of the outer cylinder 6. As a result, the rotation of the outer cylinder 6 in the locking direction (the direction in which the stopper 10 is switched from the detached posture to the locked posture) is restricted. That is, in this state, the closing operation of the operation knob 4 integrally connected to the outer cylinder 6, that is, the switching operation from the OPEN position 25 to the LOCK position 26 is restricted.

In the state where the tip engaging portion 413a of the lever 41 locks the locking regulation locking piece 67 of the outer cylinder 6, the belt body portion 431 is in a state where the belt 43 is wound along the belt guide 61 of the outer cylinder 6. The belt spring 434 whose both ends are moored to the second connecting portion 433 and the locking hole 201 provided in the upper case 2 is in an extended state (see FIGS. 37, 46, 47, etc.). .. At this time, the elastic force of the belt spring 434 in the extended state acts in the direction of rotating the outer cylinder 6 in the locking direction, so that the locking holes of the outer cylinder 6, the belt 43, the belt spring 434, and the upper case 2 The positional relationship between the parts is defined, such as 201 (see FIGS. 10 and 37). As described above, in the button lock 100 of the present embodiment, when the button lock 100 is in the unlocked state mechanically and externally, the outer cylinder 6 is urged in the locking direction by the elastic force of the belt spring 434. At the same time, since the locking regulation locking piece 67 of the outer cylinder 6 is locked by the tip engaging portion 413a of the lever 41, the rotation of the outer cylinder 6 in the locking direction is restricted (FIG. 45). reference). As shown in FIG. 45, in the button lock 100 of the present embodiment, a latch rear gap C1 and a latch front gap C2 are formed between the latch main body 111 and the latch accommodating hole 313.

[Operation when locking]
Next, the operation when the button lock 100 is locked will be described. The button lock 100 according to the present embodiment is automatically unlocked only by closing the door 220 of the locker 200 in the unlocked state internally, that is, with the push buttons 22 aligned with the unlocking code. Is internally mechanically locked, and has an automatic locking function in which the stopper 10 is automatically locked to the frame 230 on the housing 210 side without closing the operation knob 4. Hereinafter, the automatic locking function of the button lock 100 will be described.

In the present embodiment, when the button lock 100 is locked, the user is shown in FIG. 4 from a state in which the button lock 100 is unlocked internally and externally as described with reference to FIGS. 45 to 47. The door 220 in the open state is closed so as to be closed. Then, in the process of closing the door 220, the latch main body 111 of the latch 110 comes into contact with the frame 230 of the housing 210, and the latch accommodating formed inside the latch cover portion 310 (see FIGS. 2 and 3) of the rear panel 30. It is pushed into the hole 313.

49 to 51 show a button at the time of a door closing operation (hereinafter, referred to as “unlocked door closing operation”) for closing the door 220 of the locker 200 from the state where the button lock 100 is unlocked internally and externally. It is a figure which shows the operating state of the lock 100. In the process of closing the door 220 by the user from the state where the button lock 100 is unlocked internally and externally, the latch body 111 of the latch 110 comes into contact with the frame 230 of the housing 210 to latch. The latch body 111 is pushed into the latch accommodating hole 313 against the urging force (elastic force) of the spring 113. When the door is closed in the unlocked state, the first pressed surface 111a of the latch body 111 comes into contact with the frame 230, and the first pressed surface 111a is pressed toward the front of the button lock 100. When the latch rear gap C1 is maximized and the latch front gap C2 becomes substantially zero, the latch main body 111 is brought closer to the front side (front panel 21 side) with respect to the latch accommodating hole 313 (see FIG. 48). ). As a result, the protrusion 403 of the finger 40 mounted on the latch shaft portion 112 pushes the latch main body 111 into the latch accommodating hole 313 in a state where the first contact surface 403a is in contact with the guide front wall 311a.

Here, when the latch main body 111 is pushed into the latch accommodating hole 313, the finger 40 in which the main body 401 is loosely fitted to the latch shaft 112 so as to be sandwiched between the latch main body 111 and the latch spring 113 is also latched. By being pressed against the side surface 111c (see FIG. 31) of the main body 111, it slides along the latch shaft portion 112 following the latch main body 111. That is, the finger 40 slides in the direction from the base end portion 112a of the latch shaft portion 112 toward the tip end portion 112b (hereinafter, referred to as “first direction”) (see FIG. 31). At that time, the finger 40 slides in the first direction in a state where the first contact surface 403a of the protrusion 403 is pressed against the guide front wall 311a of the guide groove 311.

Here, before the latch body 111 is pushed into the latch accommodating hole 313, that is, before the finger 40 slides along the first direction of the latch shaft portion 112, the finger 40 has a finger 40 as shown in FIG. 45 (b). The operating surface 402a of the operating arm portion 402 is in contact with the pressed surface 412a of the detecting arm portion 412 of the lever 41. When the unlocking state door closing operation is performed from this state, the finger 40 slides in the first direction in a state where the first contact surface 403a of the protrusion 403 is pressed against the guide front wall 311a of the guide groove 311. At that time, the first contact surface 403a of the protrusion 403 is pressed against the guide front wall 311a of the guide groove 311 so that the detection arm portion of the lever 41 whose tip end side is the central axis of the latch shaft portion 112 with respect to the finger 40. Rotational torque is applied in the direction of approaching 412 (indicated by arrow X in FIG. 48). As a result, the finger 40 can be slid in the first direction while maintaining the contact state of the operating surface 402a of the operating arm 402 with the finger 40 with respect to the pressed surface 412a of the detection arm 412 of the lever 41. As a result, the lever 41 can be rotated about the bearing portion 411 that is pivotally supported with respect to the lever support shaft 422. As a result, the rotation regulating arm 413 of the lever 41 pressed against the recess 68 of the outer cylinder 6 is separated from the recess 68, so that the outer cylinder 6 is locked by the tip engaging portion 413a of the rotation regulating arm 413. The locking of the regulation locking piece 67 is released.

At that time, as described above, since the outer cylinder 6 is urged in the locking direction by the elastic force of the belt spring 434, the outer cylinder 6 is locked by releasing the locking of the locking regulation locking piece 67. The restriction on rotation in the direction is lifted. That is, the elastic force of the belt spring 434 causes the outer cylinder 6 to rotate in the locking direction. At that time, since the outer cylinder 6, the stopper 10 and the operation knob 4 are interlocked with each other, the outer cylinder 6 is interlocked with the rotation in the locking direction by the elastic force of the belt spring 434, and the posture of the stopper 10 is engaged from the detached posture. It transitions toward a stop posture. Since the operation knob 4 of the button lock 100 also has a structure that is linked with the outer cylinder 6 and the stopper 10, the operation knob 4 is moved from the OPEN position 25 to the LOCK position in conjunction with the rotation of the outer cylinder 6 in the locking direction. It will transition to 26.

FIG. 49 shows a state in which the stopper 10 is in the process of transitioning from the detached posture to the locked posture due to the elastic force of the belt spring 434. In the state shown in FIG. 49, the latch main body 111 of the latch 110 is in a state of being pushed into the latch accommodating hole 313 in the latch cover portion 310 (hereinafter, referred to as “latch immersion state”). FIG. 50 shows a state in which the stopper 10 is automatically switched to the locked posture by the elastic force of the belt spring 434. In the state shown in FIG. 50, a state in which the stopper 10 is completely switched from the detached posture to the locked posture is shown. Further, FIG. 51 shows a state in which the door closing operation of the door 220 is completed and the latch 110 (latch body 111) is released from being pushed by the frame body 230 of the housing 210. In this state, the latch main body 111 of the latch 110 protrudes relatively from the inside of the latch accommodating hole 313 as compared with the latch immersion state (hereinafter, referred to as “latch protruding state”). Since the finger 40 follows the movement of the latch main body 111 by the elastic force of the latch spring 113, when the latch main body 111 protrudes from the latch accommodating hole 313 from the latch immersion state, the finger 40 also becomes the latch shaft portion 112. It slides along the second direction opposite to the first direction.

As described above, in the button lock 100 of the present embodiment, by performing the unlocked state closing operation described above, the operation knob 4 is automatically moved from the OPEN position 25 to the LOCK position 26 by the elastic force of the belt spring 434. The button lock 100 is locked mechanically by the external mechanism by switching and switching the stopper 10 from the detached posture to the locked posture. The button lock 100 in the present embodiment is automatically locked internally by performing the unlocked state closing operation described above. Hereinafter, the internal mechanical locking of the button lock 100 will be described.

When the outer cylinder 6 of the button lock 100 rotates in the closing direction by performing the unlocked door closing operation as described above, the drive shaft 12 also rotates in conjunction with the rotation of the outer cylinder 6. In FIG. 28, the drive shaft 12 rotates counterclockwise when the stopper 10 shifts from the detached posture to the locked posture. Along with this, the claw portion 123a of the middle stage portion 123 having a substantially C shape in the drive shaft 12 engages with the hook 392 of the hooked arm 39, and the hooked arm 39 is pulled downward against the hook spring 393. (See FIGS. 28-30). Then, when the arm 39 with a hook slides downward, the hook base 38 connected to the arm 39 with a hook sandwiching the lower case 3 also slides downward in conjunction with it. At that time, as shown in FIG. 27, since the engaging recess 381a of the hook base 38 is engaged with the side arm 95 of the rod return plate 9, the rod return plate 9 is interlocked with the hook base 38. Also slides downward from the initial reference position. A clear button 23 is attached to the rising portion 92 of the rod return plate 9. Therefore, when the outer cylinder 6 rotates in the closing direction, the clear button 23 also slides in conjunction with this.

As described above, when the rod return plate 9 slides downward from the initial reference position in conjunction with the rotation of the outer cylinder 6 in the closing direction, as shown in FIG. 52, the first concave pair of the operating rod 32 is paired. The mating state of the claw portion 91 of the rod return plate 9 fitted to the 321a, 321a or the second recess pair 321b, 321b is released. Then, since the operating rod 32 is pulled by the urging force of the rod spring 324, the pushed operating rod 32 is returned to a predetermined clear position. Until the holding of the operating rod 32 by the claw portion 91 of the rod return plate 9 is released, only the operating rod 32 corresponding to the unlocking code is pushed in. Therefore, here, the operating rod corresponding to the unlocking code is used. Only the rod 32 will be returned to the clear position (the operating rod 32 that does not correspond to the unlocking code is originally in the clear position).

As described above, the button lock 100 includes a clearing means for displacing the operating rod 32 to the clear position. This clearing means slides the rod spring 324 as an urging member for urging the operating rod 32 from the pushing position to the clearing position, and the recess 334 of the movable block 33 by sliding the rod return plate 9. It includes a sliding means for releasing the fitting of the rod 50 with the protrusion 53. The sliding means has a claw portion 123a of the drive shaft 12 and a hook for sliding the rod return plate 9 downward in cooperation with the closing operation of the operation knob 4 when the stopper 10 is in the detached posture. The arm 39 includes a hook 392, a hook base 38, and the like.

The rod return plate 9 has an inclined protrusion 94 projecting from the plate main body 93 (see FIG. 26 and the like). Therefore, when the rod return plate 9 slides downward with the closing operation of the operation knob 4, the slope of the inclined protrusion 94 tilts the groove portion 325 (see FIG. 14 and the like) provided at the end of the operating rod 32. Collision with surface 325a. That is, the inclined protrusion 94 of the rod return plate 9 pushes up the operating rod 32 from the pushing position toward the clear position, so that the fitting state of the claw portion 91 with respect to the operating rod 32 can be surely released. Therefore, the operating rod 32 corresponding to the unlocking code can be reliably cleared.

When the operating rod 32 corresponding to the unlocking code is returned to the clear position as described above, the push button 22 of the button lock 100 shifts to a state in which the unlocking code is not aligned. That is, as described with reference to FIGS. 43 and 44, since all the operating rods 32 are in the first holding state, the concave portion 334 of the movable block 33 with respect to the operating rod 32 corresponding to the unlocking code. The position and the position of the protrusion 53 of the slide rod 50 are displaced from each other, and the slide rod 50 slides downward from the initial reference position. As a result, as shown in FIG. 11, the posture of the arm 36 is changed by the arm control unit 55 in the slide rod 50, and the rotation stopper 3 thereof.
When the 63 is pushed up, the opening operation restriction locking piece 66 of the outer cylinder 6 is locked by the rotation stopper 363. As a result, the rotation of the outer cylinder 6 in the opening direction is restricted, and the opening operation of the operation knob 4 is restricted. That is, the button lock 100 is also locked internally. As described above, according to the button lock 100 in the present embodiment, the lock can be automatically locked internally and externally in accordance with the unlocked state door closing operation.

When the button lock 100 is automatically locked by the above-mentioned unlocked state door closing operation, the stopper 10 is engaged from the detached posture to the locked posture when the claw portion 123a on the drive shaft 12 and the hook 392 of the hooked arm 39 are engaged. It is designed to be released in the process of switching to. When the engagement is released, the urging force of the rod return plate spring 97 pushes up the hooked arm 39 together with the rod return plate. As a result, the hook base 38, the rod return plate 9, and the clear button 23 are integrally pushed up to the original normal position.

The operation content when the automatically locked button lock 100 is unlocked is as described above. That is, after the button lock 100 is internally mechanically unlocked by aligning the push buttons 22 of the button lock 100 with the unlocking code, the operation knob 4 is opened. As a result, the stopper 10 is changed from the locked posture to the disengaged posture, and the stopper 10 is disengaged from the frame 230 of the housing 210 to unlock the button lock 100 externally. In this state, the user can open the door 220 of the locker 200, but when the door 220 is also opened, the latch body 111 of the latch 110 comes into contact with the frame 230 of the housing 210. , The latch body 111 is pushed into the latch accommodating hole 313 against the urging force (elastic force) of the latch spring 113. The button lock 100 in the present embodiment is used when performing a door opening operation (hereinafter, referred to as “unlocked state door opening operation”) for opening the door 220 of the locker 200 from a state in which the locker 200 is unlocked internally and externally. Has adopted a structure that does not lock automatically, unlike when the door is closed in the unlocked state.

53 and 54 are views for explaining the relationship between the finger 40 and the detection arm portion 412 in the lever 41 when the door is opened in the unlocked state. In the unlocked state, when the door is opened, the latch body 111 of the latch 110 comes into contact with the frame 230 of the housing 210 in the process of opening the door 220, thereby resisting the urging force (elastic force) of the latch spring 113. The latch body 111 is pushed into the latch accommodating hole 313. Here, as shown in FIG. 53, during the unlocked state door opening operation, the second pressed surface 111b of the latch main body 111 comes into contact with the frame 230, and the second pressed surface 111b is pressed. NS. That is, contrary to the case of the unlocked door closing operation, the second pressed surface 111b of the latch main body 111 is pressed toward the rear of the button lock 100, so that the latch front gap C2 is maximized and the latch rear gap C1. Is substantially zero, the latch body 111 is moved toward the back side (rear side of the button lock 100) with respect to the latch accommodating hole 313 (see FIG. 53). As a result, the protrusion 403 of the finger 40 mounted on the latch shaft portion 112 pushes the latch main body 111 into the latch accommodating hole 313 in a state where the second contact surface 403b is in contact with the guide rear wall 311b. That is, the finger 40 slides in the first direction along the latch shaft portion 112 in a state where the second contact surface 403b of the protrusion 403 is pressed against the guide rear wall 311b of the guide groove 311.

At that time, the second contact surface 403b of the protrusion 403 is pressed against the guide rear wall 311b of the guide groove 311 so that the detection arm portion of the lever 41 whose tip end side is the central axis of the latch shaft portion 112 with respect to the finger 40. The rotational torque is applied in the direction away from 412 (indicated by the arrow Y in FIG. 53). As a result, as shown in FIGS. 53 and 54, the finger 40 rotates around the latch shaft portion 112 in the arrow Y direction, and the tip end side of the finger 40 separates from the detection arm portion 412. As a result, when the door 220 is opened in the unlocked state, the latch body 111 of the latch 110 comes into contact with the frame 230 of the housing 210 and is pushed into the latch accommodating hole 313, resulting in a finger. When the 40 slides in the first direction along the latch shaft portion 112, the pressed surface 412a of the detection arm portion 412 of the lever 41 is not pushed by the operating surface 402a of the operating arm portion 402 of the finger 40.

That is, even if the finger 40 slides in the first direction, the posture of the lever 41 can be maintained in the state shown in FIG. 54. As a result, unlike the unlocked state when the door is closed, the lever 41 does not rotate around the bearing portion 411, which restricts the rotation of the lever 41 pressed against the recess 68 of the outer cylinder 6. The arm portion 413 can be fastened to the recessed portion 68, and the locking regulation locking piece 67 of the outer cylinder 6 can be maintained by the tip engaging portion 413a of the rotation regulation arm portion 413. Therefore, since the restriction on the rotation of the outer cylinder 6 in the locking direction is maintained, the stopper 10 is not automatically switched from the detached posture to the locked posture by the elastic force of the belt spring 434. As a result, the button lock 100 is not inadvertently locked when the door is opened in the unlocked state, and the trouble of having to close the door 220 after the button lock 100 is unlocked again can be avoided. Can be done. That is, when the user locks the button lock 100 again after opening the door 220, the user can automatically lock the button lock 100 simply by closing the door 220 as it is.

As described above, in the button lock 100 of the present embodiment, the stopper 10 is automatically locked to the frame 230 of the housing 210 only by the user closing the door 220 without closing the operation knob 4. Can be made to. At that time, since the button lock 100 is automatically locked by the internal mechanism, it is possible to restrict the opening operation of the operation knob 4 until the push button 22 is pushed according to the unlocking code after locking. can. According to the button lock 100, the user does not need to close the operation knob 4 at the time of locking, which is excellent in convenience, and the button lock 100 is automatically locked without the locking operation by the operation knob 4, so that it is locked in the first place. It is possible to improve the crime prevention property as compared with the conventional case without forgetting the locking operation.

The details of the lever 41 and the finger 40 included in the automatic locking mechanism of the button lock 100 in the present embodiment will be described. As shown in FIG. 31, at the tip of the operating arm portion 402 of the finger 40, an inclined surface 402b inclined with respect to the axial direction of the operating arm portion 402 is formed on the surface opposite to the operating surface 402a. On the other hand, as shown in FIG. 40, at the tip of the detection arm portion 412 of the lever 41, an inclined surface 412b inclined with respect to the axial direction of the detection arm portion 412 is formed on the surface opposite to the pressed surface 412a. ing. According to this, when the finger 40 slides in the first direction along the latch shaft portion 112 following the pushing of the latch main body 111 into the latch accommodating hole 313 during the unlocked state closing operation described above, the finger The operating surface 402a formed at the tip of the operating arm portion 402 in 40 may get over the pressed surface 412a formed at the tip of the detecting arm portion 412 of the lever 41 (see FIG. 55 (a)). According to the button lock 100 in the present embodiment, as shown in FIG. 55 (a), the tip (acting surface 402a) of the actuating arm portion 402 of the finger 40 is the tip end (pressed surface) of the detection arm portion 412 of the lever 41. Even when 412a) is overcome, an inclined surface 402b and an inclined surface 412b are formed at the tip of the operating arm portion 402 of the finger 40 and the tip of the detecting arm portion 412 of the lever 41, respectively, which will be described below. As described above, the positional relationship between the finger 40 and the lever 41 shown in FIG. 45 can be restored again.

That is, when the latch body 111 is released from being pushed by the frame 230 of the housing 210 and the latch body 111 returns from the latch immersion state to the latch protrusion state during the unlocked state closing operation, the elastic force of the latch spring 113 When the finger 40 is pressed in the second direction by the finger 40, as shown in FIG. 55 (b), the inclined surface of the operating arm portion 402 of the finger 40 is opposed to the inclined surface 412b of the detection arm portion 412 of the lever 41. 402b is pressed. Then, the inclined surface 40 of the finger 40 is placed on the inclined surface 412b of the lever 41.
By sliding on 2b, the inclined surface 402b of the operating arm portion 402 of the finger 40 gets over the pressed surface 412a of the detection arm portion 412 of the lever 41. As a result, as shown in FIG. 55 (c), the finger 40 and the lever 41 are in a positional relationship such that the operating surface 402a of the operating arm 402 of the finger 40 and the pressed surface 412a of the detecting arm 412 of the lever 41 face each other. Can be restored.

[Unlocking code setting]
Next, a method of setting the unlocking code in the button lock 100 will be described. As described above, the unlocking code of the button lock 100 can be arbitrarily set. The unlocking code setting change is performed in a state where the button lock 100 is unlocked. More specifically, the setting change of the unlocking code is performed by operating the setting change switch 11 as described later. Normally, the setting change switch 11 is aligned with the fixed position 30a printed on the rear panel 30. Then, the setting change switch 11 can be switched to the reset position 30b and the setting position 30c in addition to the fixed position 30a by the user (see FIG. 3). The fixed position 30a, the reset position 30b, and the set position 30c are printed on the rear panel 30, for example, so that the user can easily identify each of these positions.

The setting change switch 11 can switch from the fixed position 30a to the reset position 30b or the setting position 30c only when the button lock 100 is internally unlocked. That is, when the button lock 100 is internally locked, the setting change switch 11 has a structure in which the operation of switching from the fixed position 30a to the reset position 30b or the setting position 30c is restricted. That is, only when the button lock 100 is unlocked, the unlocking code setting change operation is possible.

When setting the unlocking code, first, the setting change switch 11 on the back surface of the button lock 100 is rotated from the fixed position 30a to the reset position 30b. FIG. 56 is a perspective view of the setting change switch 11. As shown in FIGS. 27 and 56, the setting change switch 11 has a disk-shaped operation unit 1120 and a shaft portion 1130 connected to the operation unit 1120. The operation unit 1120 is exposed to the outside through the opening of the rear panel 30 as shown in FIGS. 2 and 3. A groove for operation is formed on the surface of the operation unit 1120. The user can switch the setting change switch 11 to any of the fixed position 30a, the reset position 30b, and the setting position 30c shown in FIG. 3 by inserting a coin or the like into the groove of the operation unit 1120 and rotating the setting change switch 11. There is.

Further, among the shaft portions 1130 of the setting change switch 11, a disk portion 1140 having a disk shape is provided in the vicinity of the base end portion connected to the operation unit 1120, and the back surface of the disk portion 1140 is provided with a disk portion 1140. The rod-shaped pin 1150 protrudes. Further, a fan-shaped portion 1160 having a fan-shaped (approximately a quarter circle) cross section is formed in a region of the shaft portion 1130 below the disk portion 1140. The tip end side of the shaft portion 1130 is rotatably attached to the upper case 2. Further, as shown in FIG. 26, the plate body portion 93 of the rod return plate 9 is cut to prevent the shaft portion 1130 (fan-shaped portion 1160) and the plate body portion 93 of the setting change switch 11 from interfering with each other. The notch recess 96 is formed.

FIG. 57 is a diagram showing a relative relationship between the rod return plate 9 and the shaft portion 1130 of the setting change switch 11. FIG. 57 shows the back surface of the rod return plate 9, that is, the surface on which the above-mentioned claw portion 91 is not projected. The lower corner of the plate body 93 protrudes from the disk 1140 when the operation unit 1120 of the setting change switch 11 is rotated counterclockwise (for example, in the direction from the fixed position 30a to the reset position 30b). A pin receiving portion 99 for receiving and locking the pin 1150 is formed. Further, as shown in FIG. 22, a fan-shaped portion 1160 of the setting change switch 11 is inserted into the square hole portion 74 of the guide plate 7. FIG. 22 shows the relative relationship between the fan-shaped portion 1160 and the square hole portion 74 in a state where the setting change switch 11 is set to the fixed position 30a. Further, FIG. 57A shows the relative relationship between the pin 1150 and the pin receiving portion 99 in a state where the setting change switch 11 is set to the fixed position 30a.

As described above, the position of the setting change switch 11 is changed from the fixed position 30a to the reset position 30b by the user. At that time, first, in the process of the position of the setting change switch 11 from the fixed position 30a to the setting position 30c, the fan-shaped portion 1160 of the setting change switch 11 presses the edge portion of the square hole portion 74 of the guide plate 7 on the side surface thereof. .. As a result, the guide plate 7 slides downward from the initial reference position. As described above, since the slide rod 50 is housed in the housing recess 75 of the guide plate 7, the slide rod 50 also slides downward from the initial reference position together with the guide plate 7. That is, in the process of the position of the setting change switch 11 from the fixed position 30a to the setting position 30c, the guide plate 7 and the slide rod 50 in the housing are integrally slid downward from the initial reference position. The rod return plate 9 is held at the initial reference position even when the fixed position 30a is switched to the set position 30c.

As described above, by sliding the guide plate 7 downward from the initial reference position, the mounted state of the movable block 33 mounted on the operating rod 32 is released, and the movable block 33 is released from the operating rod 32. break away. Of the guide plates 7 that slide in the housing, the position where the movable block 33 accommodated in the block accommodating hole 71a is detached from the operating rod 32 is referred to as a “disengagement position”. Then, as shown in FIGS. 58 and 59, the fitting of the movable block 33 to the operating rod 32 is released, and the unlocking code of the button lock 100 can be set. In the present embodiment, the fan-shaped portion 1160 of the setting change switch 11 slides the guide plate 7 to move the movable block 33 to the initial reference position (initial position) in which the movable block 33 is maintained in a state of being attached to the operation rod 32. It functions as a switching means for switching the attachment / detachment state of the movable block 33 with respect to the operation rod 32 from the detachment position where the block 33 is maintained in the detached state from the operation rod 32. Then, when the setting change switch 11 is operated to the fixed position 30a as the normal position, the guide plate 7 is held at the initial reference position, and when the setting change switch 11 is switched from the fixed position 30a to the setting position 30c. Slide the guide plate 7 from the initial reference position to the detached position.

By the way, since the button lock 100 is in the unlocked state at the time of the unlocking code setting operation, the operating rod 32 corresponding to the unlocking code is in the rod second holding state, and the operating rod 32 not corresponding to the unlocking code is in the rod second holding state. Is in the first holding state. That is, when the unlocking code is set, the button lock 100 in the unlocked state is in a state in which the operating rod 32 in the rod first holding state and the operating rod 32 in the rod second holding state are mixed. Therefore, in the unlocking code setting operation in the present embodiment, the position of the setting change switch 11 is further changed from the setting position 30c to the reset position 30b. Then, as shown in FIG. 57B, the pin 1150 provided on the disk portion 1140 of the setting change switch 11 engages with the pin receiving portion 99 of the rod return plate 9, and the pin 1150 initially initializes the rod return plate 9. Slide down from the reference position. When the rod return plate 9 slides downward from the initial reference position, the claw portion 91 as the engaging portion causes the first recessed pair 321a, 321a or the second recessed pair 321b, 321b of the operating rod 32 as the engaged portion. The two are disengaged from each other.

Further, since the rod return plate 9 is provided with the inclined protrusion 94, the inclined protrusion 94 of the rod return plate 9 collides with the inclined surface 325a of the operating rod 32 in the second holding state. The operating rod 32 in the second holding state is pushed up. As a result, all the operating rods 32 are surely cleared to the clear position (the operating rod 32 in the first holding state is originally held to the clear position).

Next, as the unlocking code setting operation procedure, the setting change switch 11 is rotated in the reverse direction to return from the reset position 30b to the setting position 30c. The button lock 100 in the present embodiment includes a setting change switch spring for rotating the position of the setting change switch 11 in the direction from the reset position 30b to the setting position 30c, and is set by the elastic force of the setting change switch spring. The change switch 11 may be automatically switched from the reset position 30b to the set position 30c. By this operation, the relationship between the pin 1150 in the setting change switch 11 and the pin receiving portion 99 of the rod return plate 9 returns from the relationship shown in FIG. 57 (b) to the relationship shown in FIG. 57 (a). That is, the engagement state between the pin 1150 on the setting change switch 11 and the pin receiving portion 99 on the rod return plate 9 is released. As a result, the rod return plate 9 is not pressed downward by the pin 1150 of the setting change switch 11, so that the rod return plate 9 is pushed up by the urging force of the rod return plate spring 97. That is, the rod return plate 9 slides upward in the housing to return to the initial reference position.

As a result, the claw portion 91 of the rod return plate 9 is in the rod first holding state fitted in the first recessed pair 321a, 321a of the operating rod 32 (see FIG. 13). At this time, the guide plate 7 and the slide rod 50 held by the guide plate 7 are still held in a state of sliding downward with respect to the initial reference position. That is, each movable block 33 is maintained in a state of being separated from the operating rod 32.

From this state, the user performs an operation of pushing the push button 22 corresponding to the newly set unlocking code. Then, only the operating rod 32 corresponding to the new unlocking code is shifted from the rod first holding state to the rod second holding state. That is, as shown in FIG. 42, only the operating rod 32 corresponding to the new unlocking code is fitted with the claw portion 91 of the rod return plate 9 into the second recessed pairs 321b and 321b of the body portion main body 321. As a result, the rod is changed to the second holding state. On the other hand, the other operating rods 32 are held in the rod first holding state as shown in FIG. 41.

From the state in which the movable block 33 is held in a detached state with respect to each operation rod 32 as described above, the user then rotates the setting change switch 11 from the setting position 30c to the fixed position 30a. Then, the pressing state by the fan-shaped portion 1160 of the setting change switch 11 that has been pressing the edge portion of the square hole portion 74 is released. As a result, the guide plate 7 and the slide rod 50 are integrally pushed up by the urging force of the guide spring 73, and return to the initial reference position. Since the movable block 33 is accommodated in the block accommodating hole 71a of the guide plate 7, the movable block 33 is reattached to the operating rod 32 when the guide plate 7 returns to the initial reference position. Further, when the setting change switch 11 is switched from the set position 30c to the fixed position 30a, the slide rod 50 also returns to the original initial reference position. Therefore, the protrusion 53 of the slide rod 50 is fitted into the recess 334 of the movable block 33 mounted at the first holding position or the second holding position of each operating rod 32.

For example, when the setting change switch 11 is set to the setting position 30c at the time of changing the setting of the unlocking code, the user presses the push buttons 22 corresponding to "2", "5", "7", and "8". When pushed, the operating rod 32 corresponding to these is in the rod second holding state in relation to the claw portion 91 of the rod return plate 9, and the other operating rods 32 are in the rod first holding state. Then, when the setting change switch 11 is adjusted to the fixed position 30a from this state, the operating rod 32 corresponding to "2", "5", "7", and "8" in the rod second holding state is used. The movable block 33 is attached to the second holding position, and the other operating rods 3
For 2, the movable block 33 is mounted at the first holding position.

As described above, the mounting position of the movable block 33 with respect to the operating rod 32 is changed based on the new unlocking code selected by the user, so that the setting change of the unlocking code is completed. Thereby, the unlocking code of the button lock 100 can be set to an arbitrary code.

In the method of setting the unlocking code in the button lock 100 described above, the setting change switch 11 is once rotated from the fixed position 30a to the reset position 30b because the button lock 100 changes the setting of the unlocking code. This is because the button lock 100 is in the unlocked state and at least one operating rod 32 is pushed in when the button lock 100 is unlocked. As described above, since at least one operating rod 32 is in the rod second holding state, in the present embodiment, after clearing all the operating rods 32 to the clear position once, the setting change switch 11 is set to the set position. At the same time, the push button 22 is pushed. Thereby, when the setting of the unlocking code related to the button lock 100 is changed, the unlocking code can be surely changed to a desired setting.

As described above, the button lock 100 according to the present embodiment can be arbitrarily set by the user, but in particular, the push button 22 is pressed from the front side of the button lock 100. It is excellent in that the setting can be changed by the dynamic operation. That is, according to the button lock 100 according to the present embodiment, the unlocking code can be set by pressing the push button 22 from the front side of the button lock 100, so that the work of changing the setting of the unlocking code can be performed. It is possible to improve the property as compared with the conventional case, and more reliably change the new unlocking code to the code intended by the user. That is, it is possible to preferably suppress the occurrence of an unlocking code setting error. In the button lock 100 of the present embodiment, although the setting change switch 11 itself is provided on the lower case 3 side, the operation of the setting change switch 11 is performed at the start and end of the unlocking code setting work. Since this is sufficient, there is no risk that the workability of the unlocking code setting change operation will be reduced. Since the unlocking code setting operation itself is performed by the pushing operation of the push button 22 provided on the front side of the button lock 100, it is possible to prevent an error in setting the unlocking code from occurring.

Next, a structure that enables the unlocking code setting change operation only when the button lock 100 is unlocked will be described. As shown in FIG. 20 and the like, the middle plate 8 is formed with a block accommodating recess 81 capable of accommodating the movable block 33. Further, as described above, the operating rod 32 that does not correspond to the unlocking code has the movable block 33 held in the first holding position, and the operating rod 32 that corresponds to the unlocking code has the movable block 33 in the second holding position. It is held.

Here, when the middle plate 8 is in the initial reference position and the operating rod 32 that does not correspond to the unlocking code is pushed into the rod second holding state, the movable block 33 attached to the operating rod 32 is moved. The guide plate 7 is arranged so as to straddle both the block accommodating hole 71a and the block accommodating recess 81 of the middle plate 8. That is, the front side of the movable block 33 is accommodated in the block accommodating hole 71a, and the rear side is accommodated in the block accommodating recess 81. In this state, even if the setting change switch 11 is to be switched from the fixed position 30a to another position, the movable block 33 is inserted into both the block accommodating hole 71a and the block accommodating recess 81, so that the guide plate 7 is initially set. Sliding down from the reference position is restricted.

On the other hand, when the operating rod 32 corresponding to the unlocking code is not pushed in, that is, in the rod first holding state, the movable block 33 is the block accommodating recess 28 formed on the inner surface side of the upper case 2. (See FIG. 37) and the guide plate 7 is arranged so as to straddle both the block accommodating hole 71a. That is, in this case, the front side of the movable block 33 is accommodated in the block accommodating recess 28, and the rear side is accommodated in the block accommodating hole 71a. The block accommodating recess 28 of the upper case 2 is arranged so as to face the block accommodating recess 81 of the middle plate 8, and when the guide plate 7 is in the initial reference position, it is also positioned with the block accommodating hole 71a of the guide plate 7. Matches. In this state, even if the setting change switch 11 is to be switched from the fixed position 30a to another position, the movable block 33 is inserted into both the block accommodating recess 28 of the upper case 2 and the block accommodating hole 71a of the guide plate 7. Therefore, the guide plate 7 is restricted from sliding downward from the initial reference position.

From the above, when the button lock 100 is internally locked, the guide plate 7 is restricted from sliding from the initial reference position. Therefore, the setting change switch 11 is switched from the fixed position 30a to another position. Is restricted. When only the operating rod 32 corresponding to the unlocking code is pushed into the rod second holding state, the entire movable block 33 mounted on all the operating rods 32 accommodates the block of the guide plate 7. It is housed in the hole 71a. In this state, the slide of the guide plate 7 from the initial reference position is not hindered, so that the setting change switch 11 can be switched from the fixed position 30a to another position. In this way, when the button lock 100 is unlocked, the unlocking code setting change operation becomes possible. The button lock 100 according to the present embodiment has a search mechanism for searching for an unlocking code when the user forgets the unlocking code, and is unlocked at the same time as an emergency unlocking. You can search for the code.

The push button lock according to the present embodiment can be modified in various ways without departing from the gist of the present invention. For example, in the push button lock according to the present embodiment, the movable block 33 exemplifies the recess 334 as the fitting portion, and the protrusion 53 in the slide rod 50 exemplifies the fitting portion that can be fitted into the recess 334. However, a concave portion may be provided on the slide rod 50 side, and a convex portion that can be fitted into the concave portion may be provided on the movable block 33 side. Further, although the above-described embodiment has been described by applying the present invention to a push button lock as an example, it may be applied to another mechanical lock device such as a dial lock.

2 ... Upper case 3 ... Lower case 4 ... Operation knob 5 ... Cylinder 6 ... Outer cylinder 7 ... Guide plate 8 ... Middle plate 9 ... Rod return plate 10 ...・ Stopper 11 ・ ・ ・ Setting change switch 22 ・ ・ ・ Push button 32 ・ ・ ・ Operation rod 33 ・ ・ ・ Movable block 50 ・ ・ ・ Slide rod 100 ・ ・ ・ Button lock

Claims (7)

A mechanical locking device attached to an opening / closing body that opens and closes the opening of an object to be locked.
With the housing
A stopper that can be engaged and detached from the seat of the object to be locked,
An operation knob that is connected to the stopper and can switch the stopper between the locking posture and the disengaging posture by accepting an external operation.
An external operation is accepted, and when the accepted external operation matches a predetermined unlocking operation, the lock is unlocked. The lock mechanism body that regulates the opening operation and
A latch that is provided so as to be retractable from the latch accommodating hole provided in the housing and is urged in the protruding direction by a latch spring.
When the stopper is in the disengagement posture, an automatic locking means for urging the stopper in a direction of switching from the disengagement posture to the locking posture, and
The operation of switching the stopper from the locked posture to the disengaged posture is triggered to regulate the closing operation of the operation knob, and the latch is immersed in the latch accommodating hole when the opening / closing body is closed. A closing operation regulating means that operates as an opportunity to release the regulation of the closing operation,
The closing operation regulating means operates when the regulation is released from the state in which the closing operation of the operation knob is restricted, and by locking the lock mechanism main body, the lock mechanism main body is opened by the operation knob. Automatic locking means to regulate operation and
A mechanical lock device. The closing operation regulating means does not release the regulation of the closing operation of the operation knob when the latch is immersed in the latch accommodating hole when the opening / closing body is opened.
The mechanical locking device according to claim 1. A tubular body that is rotatably housed in the housing, is connected to the stopper and the operation knob, and can change the posture of the stopper by rotating in conjunction with the operation knob is further provided.
The automatic locking means is arranged along the outer peripheral surface of the tubular body, and one end is connected to a belt member moored to the outer peripheral surface of the tubular body, and one end is connected to the other end of the belt member. The other end has an elastic member moored to the housing,
By extending the elastic member when the stopper is in the detached posture, a rotational force in a direction corresponding to the switching from the detached posture to the locked posture is applied to the tubular body.
The mechanical locking device according to claim 1 or 2. A tubular body that is rotatably housed in the housing, is connected to the stopper and the operation knob, and can change the posture of the stopper by rotating in conjunction with the operation knob is further provided.
The latch has a latch body and a latch shaft portion provided on the latch body.
The closing operation regulating means is
A slide body that is arranged so as to be sandwiched between the latch body and the latch spring and is slidable along the latch shaft portion in accordance with the movement of the latch body.
An operating body having a detection arm and a rotation control arm,
Including
The rotation restricting arm portion locks the locking portion provided on the outer peripheral surface of the tubular body when the stopper is switched from the locking posture to the disengaging posture, thereby closing the operation knob. Regulate,
The operating body changes its posture when the sliding body that slides following the immersion of the latch body into the latch accommodating hole when the opening / closing body is closed collides with the detection arm portion. Release the lock of the lock portion by the rotation restricting arm portion,
The mechanical locking device according to any one of claims 1 to 3. The operating body has a main body portion rotatably supported in the housing, and the detection arm portion and the rotation restricting arm portion extend from the main body portion, respectively.
The closing operation restricting means further includes pressing means for constantly pressing the operating body so that the main body rotates in the first direction in which the rotation restricting arm portion approaches the outer peripheral surface of the tubular body.
When the stopper is switched from the locking posture to the disengaging posture, the rotation restricting arm portion engages with the locking portion of the tubular body due to the pressing force of the pressing means. ,
When the opening / closing body is closed, the sliding body collides with the detection arm portion, so that the main body portion rotates in the second direction opposite to the first direction against the pressing force of the pressing means. Then, the locking portion of the locking portion is released by the rotation restricting arm portion.
The mechanical locking device according to claim 4. The slide body has an annular portion that is loosely fitted to the latch shaft portion and an operating arm portion that extends from the annular portion.
The closing operation regulating means displaces the operating arm portion with respect to the detecting arm portion at a retracted position when the latch body is immersed in the latch accommodating hole as the opening / closing body is opened. Further, it further has a circumferential displacement means for displaced the annular portion relative to the latch shaft portion in the circumferential direction of the latch shaft portion.
When the latch body is fully retracted, the actuating arm is displaced to the retracted position, so that when the slide body slides following the latch body, the actuating arm is the detection arm. Is suppressed from colliding with
The mechanical locking device according to claim 5. The lock mechanism main body is a button lock that has a plurality of push buttons and is unlocked when the push buttons are pushed and operated in accordance with the unlocking code by the user.
The mechanical locking device according to any one of claims 1 to 6.

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