JP7057136B2 - Latch lock for delivery box - Google Patents

Description

The present invention relates to a latch lock for a delivery box used for locking and unlocking the door of the delivery box.

In recent years, so-called parcel delivery boxes that can receive parcels delivered by parcel delivery companies even when the resident is absent are becoming widespread.
Many parcel boxes of this type employ a digitally controlled locking mechanism, such as a parcel delivery company can arbitrarily set a password to unlock the door and notify the recipient (eg,). See Patent Document 1).
On the other hand, in this type of locking mechanism, the structure is complicated and there is room for improvement in the arrangement space and the manufacturing cost. Therefore, for example, Patent Document 2 proposes a locking structure for simplifying the structure and reducing the cost. There is.
The locking structure of Document 2 is used for a delivery box having a box body having an opening and a door that can open and close the opening. The locked state provided on the door and engaged with the box body and the box body. It reciprocates between the swing lock that swings between the unlocked state that does not engage with the swing lock, and the restricted position that regulates the swing of the swing lock and the regulated release position that does not regulate the swing of the swing lock. It is configured with a movable push lock, which can be moved from the restricted release position to the restricted position when the swing lock is locked, and regulated when the swing lock is unlocked. It is immovable from the release position to the restricted position, and when it moves to the restricted position, it becomes immovable from the restricted position to the restricted release position and becomes a locked state.
In this way, it is possible to provide a locking structure having a simple structure without requiring a special mechanism or electrical equipment.

Japanese Unexamined Patent Publication No. 2013-126498 Utility Model Registration No. 3211417

However, in the above-mentioned conventional locking structure, the delivery company opens the door, stores the delivery in the delivery box, closes the door, and turns the knob of the swing lock 90 ° to the left to lock the swing lock. Is engaged with the delivery box, and then the push lock is pushed from the front side to the back side of the door, and the swing lock is locked by moving the push lock from the deregulation position to the regulation position to lock the delivery box. Therefore, there are many operations for locking the delivery box, and there is a problem that the operability is poor.

An object of the present invention is to solve such a conventional problem, and to provide a latch lock for a delivery box, which has a simple structure, is low in cost, and facilitates locking and unlocking operations. ..

In order to achieve the above object, the present invention
A latch lock for a delivery box that is attached to the door of a delivery box, engages and disengages a latch from a latch receiving portion provided on the box body of the delivery box, and locks and unlocks the latch.
It is formed in a box shape with an opening on the back surface, has a latch operation knob mounting hole on one side of the front latch receiving portion side, and has a lock unit mounting hole on the other side of the front surface. It has a latch insertion portion on the back side of one side surface of the portion side, and can cover the latch lock mounting base mounted at a position close to the latch receiving portion of the door and the opening on the back surface of the latch lock mounting base. A base cover made of a plate, having a locking / unlocking operation knob mounting hole at a position corresponding to the lock unit mounting hole of the latch lock mounting base, and mounted on the back surface of the latch lock mounting base.
A rotary actuating member rotatably arranged inside the latch operation knob mounting hole in the latch lock mounting base, and a knob portion provided in front of the rotary actuating member and protruding outward from the latch operation knob mounting hole. The latch operation knob, which comprises a convex actuating portion protruding toward the back surface of the latch lock mounting base on the back surface of the rotation actuating member, and is attached to the latch operation knob mounting hole.
In the latch lock mounting base, it is slidably arranged on the back side of the latch operation knob from a predetermined position on one side surface side of the latch lock mounting base toward the other side surface or vice versa, and faces the back surface of the latch operation knob. The front surface and the back surface on the opposite side thereof have convex actuating connecting portions protruding toward the front surface and the back surface of the latch lock mounting base, respectively, and the front surface of the latch lock mounting base is provided at a predetermined position on one side surface side of the latch lock mounting base. The convex actuating portion of the latch operation knob is engaged with the actuating connecting portion, and the latch operation knob is rotated in a predetermined direction from the initial rotation position of the knob portion to determine one side surface side of the latch lock mounting base. A slide operating member that slides from the position toward the other side surface,
The tip end side of the slide actuating member is slidably arranged in the latch lock mounting base so as to be retractable from the latch insertion portion on the back side of the slide actuating member, and the slide actuating member is placed on the front surface facing the back surface of the slide actuating member. The slide at a predetermined position on one side surface side of the receiving portion and the latch lock mounting base in a state where the receiving portion has a convex shape protruding toward the back surface and the tip end side protrudes from the latch insertion portion. The actuating connecting portion on the back surface of the actuating member is engaged, and the sliding actuating member slides from a predetermined position on one side surface side of the latch lock mounting base toward the other side surface so that the tip end side is from the latch insertion portion. With the latch embedded in the latch lock mounting base,
The latch is arranged in the latch lock mounting base so as to be pressable in the direction of the latch insertion portion, and normally, the tip end side of the latch is projected from the latch insertion portion, and the receiving portion and the slide of the latch are provided. By engaging the actuating member with the actuating coupling portion on the back surface and engaging with the actuating connecting portion on the front surface of the slide actuating member and the convex actuating portion of the latch operation knob, the slide actuating member is said to be the same. A spring member that positions the latch lock mounting base at a predetermined position on one side surface and holds the latch operation knob in the initial rotation position.
A lock unit installed in the latch lock mounting base with a key hole exposed in the lock unit mounting hole and a rotor facing the lock / unlock operation knob mounting hole of the base cover.
It has a substantially tubular shape with an opening on the front and a rotor insertion hole on the back so that the peripheral surface of the lock unit can be surrounded in the latch lock mounting base, and has a groove on the outer peripheral surface into which the slide operating member can be inserted. It has a locking groove formed in parallel with the inner peripheral edge of the rotor insertion hole by setting a predetermined angle on the inner peripheral edge of the rotor insertion hole, and has a locking groove formed in parallel with the inner peripheral edge of the rotor insertion hole. Around the surface, the lock position that restricts the slide of the slide actuating member without aligning the groove with the slide direction of the slide actuating member and the groove coincide with the slide direction of the slide actuating member of the slide actuating member. A lock member that is rotatably installed between the lock release position that unlocks the slide and
A rotating member that is rotatably fitted to the rotor insertion hole on the back surface of the lock member, and a rotating member that protrudes from the outer peripheral portion of the rotating member and is arranged in the locking groove of the rotor insertion hole in the locking groove. It consists of a locking projection engaged with one end or the other end, and is rotatably attached to the rotor of the lock unit. By inserting a key into the lock unit and rotating the rotor in a predetermined direction, the rotor is rotated. The rotating member is rotated in the rotor insertion hole in the rotation direction of the rotor, and the locking projection is engaged with one end in the locking groove in the locking groove in the rotation direction of the rotor. A rotor cam that is rotated to rotate the lock member to the unlocked position,
In the latch lock mounting base, the lock unit is concentrically arranged on the back side of the lock unit, and is rotatably fixed to the back of the lock member integrally with the lock member, and the knob portion is attached to the base cover. The locking / unlocking operation knob protruding outward from the locking / unlocking operation knob mounting hole,
Equipped with
When waiting for the delivery box to receive luggage, unlock the latch operation knob.
When putting luggage in the delivery box, the door is opened by the rotation operation of the latch operation knob, the luggage is put in the delivery box, and the lock / unlock operation knob is rotated on the back side of the door before closing the door. By rotating the lock member to the lock position, the latch operation knob is locked, and by closing the door, the door is automatically locked.
When taking out the parcel in the delivery box, the lock member is rotated to the unlocked position by inserting the key into the lock unit and turning it in a predetermined direction to unlock the latch operation knob.
The gist is that.

In this case, the lock member is held by the detent ball mechanism each time it is rotated to the lock position and the unlock position, and the detent ball mechanism is the edge of the lock unit mounting hole or the front opening of the lock member in the latch lock mounting base. A detent groove provided on one of the edges of the ball and a mounting hole formed on the other side are arranged so as to be able to appear and disappear from the mounting hole via a detent spring in the mounting hole, and elastically engage with the detent groove . It preferably consists of a detent ball to be combined.
In this case, the front of the latch lock mounting base is provided with an indicator indicating the locked or unlocked state of the latch operation knob, and the indicator is the latch lock mounting at the edge of the lock unit mounting hole on the front of the latch lock mounting base. It is attached to a display window formed at a position corresponding to the edge of the front opening of the lock member in the base and an edge of the front opening of the lock member that appears in the display window when the lock member is in the lock position. , The lock display member indicating that the latch operation knob is locked, and the latch attached to the edge of the front opening of the lock member that appears in the display window when the lock member is in the unlocked position. It consists of an unlocking display member that indicates that the operation knob is unlocked, and the locking / unlocking operation of the locking / unlocking operation knob displays the lock / unlock display member or the unlocking display member on the display window. It is preferable that the unlocking display member is displayed on the display window by the unlocking operation with the key of the lock unit.
In this case, the back side of the latch lock mounting base has an internal unlocking function that allows the door to be opened even from the inside of the door, and the internal unlocking function has a knob protruding from the back of the latch lock mounting base on the back of the latch. It has a long hole shape so that the knob can be inserted into a position corresponding to the knob of the latch of the base cover and the knob can be moved in a direction in which the latch is immersed in the latch insertion portion of the latch lock mounting base. It is preferable to have a knob insertion portion.

According to the latch lock for the delivery box of the present invention, as described above, the latch lock mounting base and the base cover, the latch operation knob, the slide actuating member, the latch, the spring member, the lock unit, the lock member, and the like. It consists of a rotor cam and a locking / unlocking operation knob. When the recipient of the luggage waits for the delivery box to receive the luggage, the recipient only has to unlock the latch operation knob and close the door for delivery. When the courier puts the luggage in the courier box, the courier opens the door by rotating the latch operation knob, puts the luggage in the courier box, and before closing the door (even after putting the luggage, the luggage is often put in). It may be before inserting.) Locking / unlocking operation on the back side of the door The latch operation knob is locked by rotating the lock member to the lock position by rotating the knob, and the door is automatically locked by closing the door. When the recipient takes out the luggage in the delivery box, the recipient inserts the key into the lock unit and turns it in the specified direction to rotate the lock member to the unlocked position, unlock the latch operation knob, and open the door. Since the luggage is taken out, the latch lock can be made into a simple locking structure to reduce the cost, and this locking structure of the latch lock makes it possible to lock and unlock the door with a simple operation. In particular, since the door is automatically locked when the door is closed after the luggage is stored in the delivery box, it is possible to easily lock the door after the luggage is stored in the delivery box. It has a special effect unique to the present invention.

A view showing the configuration of a latch lock for a delivery box according to an embodiment of the present invention ((a) is a front view (b) is a rear view (c) is a rear view in a state where the base cover is particularly removed). The figure which shows the structure of the latch lock ((a) is a plan sectional view (b) bottom view) A view showing the configuration of the latch operation knob of the latch lock ((a) is a front view (b) is a plan sectional view (c) is a rear view). A view showing the configuration of a slide operating member of the latch lock ((a) is a front view (b) is a plan view (c) is a rear view). A view showing the structure of the latch of the latch lock ((a) is a front view (b) is a plan sectional view (c) is a rear view). A view showing the configuration of a lock member of the latch lock ((a) is a front view (b) is a plan sectional view (c) is a side view (d) is a rear view). A view showing the configuration of the rotor cam of the latch lock ((a) is a front view (b) is a plan view). A view showing the configuration of the locking / unlocking operation knob of the latch lock ((a) is a front view (b) is a plan sectional view (c) is a rear view). The figure for demonstrating the operation of each part at the time of using the latch lock ((a) is the rear view which shows the unlocked state of the latch lock, (b) is the rear view which shows the locked state of the latch lock).

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 shows the external configuration of the parcel delivery box latch lock, FIG. 2 shows the internal configuration of the parcel delivery box latch lock, and FIGS. 3 and 4 show the configuration of each part of the parcel delivery box latch lock.

As shown in FIGS. 1 and 2, the delivery box latch lock L (hereinafter, may be simply referred to as a latch lock L) is attached to the door of the delivery box and is provided on the box body of the delivery box. The latch is engaged and disengaged, and the latch is locked and unlocked. The latch lock mounting base 1, the base cover 14, the latch operation knob 2, the slide operating member 3, the latch 4, the spring member 5, and the lock unit 6 are used. A lock member 7, a rotor cam 8, and a locking / unlocking operation knob 9 are provided.
Further, in this latch lock L, a detent ball mechanism 122 and an indicator 121 are also provided between the latch lock mounting base 1 and the lock member 7, and the base cover 14 and the latch 4 on the back side of the latch lock mounting base 1 are further provided. It also has an internal unlocking function 142.
Here, the delivery box is generally known, and the box main body having an opening in the front for accommodating the luggage and one side of the front of the box main body can be rotated via a hinge. It consists of a door that is attached and opens and closes the front opening of the box body, the door is rotatable, and the latch receiving portion is provided in the vertical middle portion on the other side side of the front opening of the box body.

As shown in FIGS. 1 and 2, the latch lock mounting base 1 is formed in a box shape having an opening 10 on the back surface, and has a latch operation knob mounting hole 11 on one side of the front latch receiving portion side. The lock unit mounting hole 12 is provided on the other side of the front surface, the display window 120 of the indicator 121 is provided on the edge of the lock unit mounting hole 12 on the front surface, and the latch is inserted on the back side of one side surface of the latch receiving portion side. It has a portion 13 and is mounted at a position close to the latch receiving portion of the door.
In this case, the latch lock mounting base 1 is formed in a horizontally long rectangular parallelepiped shape and consists of front surface, top surface, bottom surface, and left and right side surfaces. Lock unit mounting holes 12 are formed on the right side of the front surface in a circular shape having a predetermined size, and the back surface is opened. In the latch operation knob mounting hole 11, a circular frame having a diameter slightly larger than that of the latch operation knob mounting hole 11 around the edge of the latch operation knob mounting hole 11 on the inner surface side of the front surface of the latch lock mounting base 1. 110 is also formed. Further, in this case, a partition wall 111 is formed between the latch operation knob mounting hole 11 and the lock unit mounting hole 12 inside the latch lock mounting base 1, and the parts mounting portion 1a related to the latch operation knob and the parts related to the lock unit are formed. It is partitioned by the mounting portion 1b, and a notch 112 is formed in the vertical intermediate portion of the partition wall 111, and the notch 112 communicates between the component mounting portions 1a and 1b. Further, spring receiving portions 113 are provided on each surface of the partition wall 111 above and below the notch portion 112 on the side of the component mounting portion 1a related to the latch operation knob. Then, the latch insertion portion 13 is formed in a U-shaped groove shape at the center of the back side edge portion of the left side surface of the latch lock mounting base 1. A plurality of bosses 114 for mounting the base cover 14 and a plurality of bosses 115 for mounting the latch lock L are formed on the inner wall of the latch lock mounting base 1, and female threads are cut on the respective bosses 114 and 115.
Further, in this case, since the indicator 121 for displaying the locked state or the unlocked state of the latch operation knob 2 described later is provided on the front surface of the latch lock mounting base 1, the display window 120 is the lock unit mounting hole on the front surface of the latch lock mounting base 1. At the edge of 12, the position corresponding to the edge of the front opening 90 of the lock member 7 described later, which is installed in the latch lock mounting base 1, here, on the left side of the lock unit mounting hole 12, is close to the lock unit mounting hole 12. A transparent acrylic plate is incorporated into this opening to form an opening.
Further, in this case, since the detent ball mechanism 122 that locks the lock member 7 to the lock position and the lock release position each time the lock member 7 is rotated to the lock position and the lock release position is provided, the lock is provided in the latch lock mounting base 1. At the edge of the unit mounting hole 12, here, on the right side and the lower side (directly below) of the lock unit mounting hole 12, two detent grooves 123 are formed in the vicinity of the lock unit mounting hole 12 at an interval of 90 °. In this case, on the contrary, a mounting hole is formed at the edge of the lock unit mounting hole 12, and a detent ball is arranged in this mounting hole so as to be able to appear and disappear from this mounting hole via a detent spring. , Two detent grooves are formed at the edge of the front opening 70 of the lock member 7 at intervals of 90 °, and the detent ball on the latch lock mounting base 1 side elastically engages with each detent groove on the lock member 7 side. It may be done.
The base cover 14 is made of a plate capable of covering the opening 10 on the back surface of the latch lock mounting base 1, and has a locking / unlocking operation knob mounting hole 140 at a position corresponding to the lock unit mounting hole 12 of the latch lock mounting base 1. It is mounted on the back of the lock mounting base 1.
In this case, the base cover 14 is composed of a horizontally long rectangular plate that can cover the opening 10 on the back surface of the latch lock mounting base 1, and the locking / unlocking operation knob mounting corresponding to the lock unit mounting hole 12 of the latch lock mounting base 1. The holes 140 are formed in a circular shape having a predetermined size. The base cover 14 is provided with a plurality of screw insertion portions 141a and 141b corresponding to the bosses 114 and 115 on the back surface of the latch lock mounting base 1.
Further, in this case, since the back side of the latch lock mounting base 1 is provided with an internal unlocking function 142 that allows the door to be opened even from the inside of the door, the knob 43 is located at a position corresponding to the knob of the latch 4 described later on the base cover 14. With this knob 43, a long hole-shaped knob insertion portion 143 is also formed so as to be able to move and guide the latch 4 in the direction of being immersed in the latch insertion portion 13 of the latch lock mounting base 1.
In this way, the members described later are attached to the component mounting portions 1a and 1b of the latch lock mounting base 1, the base cover 14 is attached to the back opening 10 of the latch lock mounting base 1, and the mounting screws S1 are attached to the screw insertion portions 141a. It is passed through and tightened to each boss 114 for mounting the latch lock mounting base 1 and fixed. Then, the latch lock L after the assembly including each member described later is placed at a position close to the latch receiving portion of the door via the fastener 15 shown by the two-dot chain line in FIG. 2B, and the mounting screw S2. Attached by.

As shown in FIGS. 1 and 2, the latch operation knob 2 is located on the front surface of the rotation actuating member 21 and the rotation actuating member 21 rotatably arranged inside the latch operation knob mounting hole 11 in the latch lock mounting base 1. It consists of a knob portion 22 that is provided and projects outward from the latch operation knob mounting hole 11, and a convex actuating portion 23 that projects toward the back surface of the latch lock mounting base 1 on the back surface of the rotation actuating member 21. It is mounted in the mounting hole 11.
In this case, as shown in FIG. 3, the rotary actuating member 21 has a circular front portion 21F that can be fitted into the latch operation knob mounting hole 1 and a latch operation knob mounting hole 11 on the front inner surface side of the latch lock mounting base 1. It consists of a circular tubular rear portion 21R that is in contact with the edge and can be fitted in the circular frame 110. As shown in FIG. 3, the knob portion 22 is formed in a vertically long rectangular parallelepiped shape at the center of the front surface of the front portion 21F of the rotation actuating member 21. A triangular mark 2M is attached to the upper end of the knob portion 22 in front of the knob portion 22. The convex actuating portion 23 is formed in a vertically long rectangular parallelepiped shape parallel to the knob portion 22 and smaller than the knob portion 22 at a position slightly to the left of the center of the rear portion of the rotary actuating member 21.
In this way, the latch operation knob 2 is rotatably attached between the latch operation knob mounting hole 11 of the latch lock mounting base 1 and the circular frame 110.

As shown in FIGS. 1 and 2, the slide operating member 3 is located on the back side of the latch operation knob 2 in the latch lock mounting base 1 from a predetermined position on one side surface side of the latch lock mounting base 1 toward the other side surface. Convex actuating connecting portions 31, 32 that are slidably arranged on the opposite side and project toward the front and back of the latch lock mounting base 1 on the front surface facing the back surface of the latch operation knob 2 and the back surface on the opposite side thereof, respectively. At a predetermined position on one side surface side of the latch lock mounting base 1, the front operation connecting portion 31 and the convex actuating portion 23 of the latch operation knob 2 are engaged with each other, and the initial rotation of the knob portion 22 of the latch operation knob 2 is started. By rotating in a predetermined direction from the position (the state where the mark 2M of the knob portion 22 is directly above), the latch lock mounting base 1 is configured to be slidable from a predetermined position on one side surface to the other side surface.
In this case, as shown in FIG. 4, the slide actuating member 3 can be arranged at the center in the vertical direction in the component mounting portion 1a related to the latch operation knob of the latch lock mounting base 1, and one side surface of the latch lock mounting base 1. In this case, it is composed of a horizontally long rectangular flat plate having a size slidable between the left side surface and the partition wall 111, and recesses 310 in one side of the front surface and the back surface, in this case, substantially half of the left side. , 320 is formed and has convex actuating connecting portions 31, 32 protruding in the front and back directions of the latch lock mounting base 1 at the middle portion of the front surface and the left end portion of the back surface, and one of the base portions 33. It consists of a side portion, in this case, a convex portion 34 protruding from the center of the right side portion and capable of inserting the notch 112 of the partition wall 111.
In this way, in the latch lock mounting base 1, the slide operating member 3 is arranged on the back side of the latch operation knob 2 with the convex portion 34 facing the notch 112 of the partition wall 111, and the base 33 is the latch lock mounting base 1. The left side surface of the actuating connecting portion 31 on the front surface of the base 33 and the right side surface of the convex actuating portion 23 of the latch operation knob 2 abut and engage with each other at a predetermined position on the left side surface side of the above, in this case, at a position in contact with the left side surface. From the initial rotation position of the knob portion 22 of the latch operation knob 2 (the state where the knob portion 22 is oriented vertically and the mark 2M is above), in a predetermined direction, in this case, by rotating clockwise, the left side surface side of the latch lock mounting base 1 It is configured to be slidable from a predetermined position toward the right side surface, and by sliding the base 33, the convex portion 34 is operated from the part mounting portion 1a related to the operation knob in the latch lock mounting base 1 with the notch 112 of the partition wall 111 as a boundary. It is possible to move forward and backward to or vice versa to the part mounting portion 1b related to the lock unit.

As shown in FIGS. 1 and 2, the latch 4 is slidably arranged in the latch lock mounting base 1 on the back surface side of the slide operating member 3 so that the tip end side can be retracted from the latch insertion portion 13. A receiving portion 41 having a convex receiving portion 41 protruding toward the back surface of the slide operating member 3 is provided on the front surface facing the back surface of the 3, and the receiving portion 41 and the latch lock in a state where the tip end portion side is projected from the latch insertion portion 13. The actuating connecting portion 32 on the back surface of the slide actuating member 3 at a predetermined position on one side surface side of the mounting base 1 is engaged, and the latch lock of the slide actuating member 3 is directed from the predetermined position on one side surface side to the other side surface. The tip side can be immersed in the latch lock mounting base 1 from the latch insertion portion 13 by sliding to.
In this case, as shown in FIG. 5, the latch 4 can slide between the slide operating member 3 and the base cover 14 in the latch lock mounting base 1 and between the left side surface of the latch lock mounting base 1 and the partition wall 111. It consists of a long rectangular plate with a large size, the tip side is formed in a fan shape in a plan view, the front is flat and the back is a diagonal curved surface, and the rear end has spring receiving parts 42 on both the upper and lower sides. It will be provided. Then, a convex receiving portion 41 is placed at a predetermined position on the left side surface side of the latch lock mounting base 1 in a state where the tip end portion side of the latch 4 is projected from the latch insertion portion 13 in the middle portion in the left-right direction on the front surface of the latch 4. It is formed in a substantially rectangular parallelepiped shape that is long in the vertical direction so as to be engageable with the actuating connecting portion 32 on the back surface of the slide actuating member 3.
Further, in this case, since the back side of the latch lock mounting base 1 is provided with an internal unlocking function 142 that allows the door to be opened even from the inside of the door, the back side of the latch 4 is projected from the back opening 10 of the latch lock mounting base 1. It has a knob 43.
In this way, the latch 4 is slidably arranged in the latch lock mounting base 1 on the back side of the slide operating member 3 so that the tip end side can be retracted from the latch insertion portion 13, and the tip end portion side protrudes from the latch insertion portion 13. The left side surface of the receiving portion 41 and the right side surface of the actuating connecting portion 31 on the front surface of the slide operating member 3 at a predetermined position on the left side surface side of the latch lock mounting base 1 are in contact with each other and engaged with each other, and the latch operation is performed. The tip side of the latch 4 is moved from the latch insertion portion 13 by sliding from the predetermined position on the left side surface side of the latch lock mounting base 1 of the latch lock mounting base 1 to the right side surface side of the slide operating member 3 by rotating the knob 2 clockwise from the initial rotation position. It can be immersed in the latch lock mounting base 1. Then, the knob 43 of the latch 4 is arranged so as to project outward from the knob insertion portion 143 of the base cover 14, and by moving this knob 43 from the latch insertion portion 13 side in the opposite direction, the latch 4 is attached to the latch lock mounting base. The door can be opened from the inside of the box body of the delivery box by being immersed in the latch insertion portion 13 of 1.

As shown in FIGS. 1 and 2, the spring member 5 is arranged in the latch lock mounting base 1 so that the latch 4 can be pressed in the direction of the latch insertion portion 13, and normally, the tip end side of the latch 4 is the latch insertion portion. While protruding from 13, the engagement with the receiving portion 41 of the latch 4 and the operating connecting portion 32 on the back surface of the slide operating member 3, and the convex operation of the operating connecting portion 31 on the front surface of the slide operating member 3 and the latch operation knob 2. By engaging with the portion 23, the slide operating member 3 is positioned at a predetermined position on one side surface side of the latch lock mounting base 1, and the latch operation knob 2 can be held at the initial rotation position.
In this case, a coil spring (hereinafter referred to as a coil spring 5) is adopted as the spring member 5, and each spring formed in the latch lock mounting base 1 on the surface of the partition wall 111 on the side of the component mounting portion 1a related to the latch operation knob. It is compressed and interposed between the receiving portion 113 and each spring receiving portion 42 at the rear end of the latch 4.
In this way, the latch 4 is normally projected from the latch insertion portion 13 on the tip end side, and the latch 4 is engaged with the receiving portion 41 and the actuating connecting portion 32 on the back surface of the slide actuating member 3, and the slide actuating member. By engaging with the actuating connecting portion 31 on the front surface of 3 and the convex actuating portion 23 of the latch operation knob 2, the slide operating member 3 is normally positioned at a predetermined position on the left side surface side of the latch lock mounting base 1 and latched. The operation knob 2 is designed so that the knob portion 22 is normally held at the initial rotation position.

As shown in FIGS. 1 and 2, in the lock unit 6, the key hole 60 is exposed in the lock unit mounting hole 12 in the latch lock mounting base 1, and the rotor 61 is made to face the locking / unlocking operation knob mounting hole 140 of the base cover 14. Will be installed.
In this case, a commonly used cylinder lock (hereinafter referred to as a cylinder lock 6) is adopted as the lock unit 6, and as is well known, the lock unit 6 is unlocked by inserting a key into the key hole 60 on the front surface (conversely, the front surface). The lock is locked by removing the key from the key hole 60 of the key), and the rotor 61 is rotated by rotating the key. It has become. Further, in this case, this one place where the key can be inserted and removed becomes the locking position of the cylinder lock 6, and it is possible to rotate 90 ° from this locking position to the unlocking position by rotating clockwise. The lock unit 6 has a flange 62 around the key hole 60, and a screw is cut on the peripheral surface of the main body to attach the nut 63. Further, the rear end of the rotor 61 is formed in a substantially oval cross section in order to attach the rotor cam 8 described later.
In this way, the lock unit 6 is inserted from the outside into the lock unit mounting hole 12 of the latch lock mounting base 1 from the rotor 61 side, the key hole 60 is exposed to the lock unit mounting hole 12, and the rotor 61 is placed on the base cover 14. It is installed in the latch lock mounting base 1 toward the locking / unlocking operation knob mounting hole 140, the nut 63 on the outer peripheral surface of the main body is tightened, and the latch lock mounting base 1 is formed by the flange 62 and the nut 63 around the key hole 60. The peripheral portion of the lock unit mounting hole 12 is sandwiched and fixed. In this case, the key hole 60 of the lock unit 6 is in the horizontal state where the key can be inserted and removed at the locked position, and is turned 90 ° to the right to be in the vertical state at the unlocked position.

As shown in FIGS. 1 and 2, the lock member 7 has a substantially tubular shape having an opening 70 on the front surface and a rotor insertion hole 71 on the back surface so as to surround the peripheral surface of the lock unit 6 in the latch lock mounting base 1. The outer peripheral surface has a groove 73 into which the slide operating member 3 can be inserted, and a predetermined angle is set on the inner peripheral edge of the rotor insertion hole 71 so that the slide operating member 3 is formed parallel to the inner peripheral edge of the rotor insertion hole 71. A lock position having a locking groove 72 and restricting the slide of the slide operating member 3 around the peripheral surface of the lock unit 6 in the latch lock mounting base 1 without aligning the groove 73 with the sliding direction of the slide operating member 3. And the groove 73 are rotatably installed between the groove 73 and the unlocked position where the slide of the slide operating member 3 is released from the regulation by aligning the groove 73 with the sliding direction of the slide operating member 3.
In this case, as shown in FIG. 6, the lock member 7 is formed in a substantially cylindrical shape having a diameter larger than that of the nut 63 of the lock unit 6, the front surface is opened as a circular opening 70, and the back surface is a rotor insertion in the center. A hole 71 is formed and the periphery thereof is closed. The rotor insertion hole 71 is opened in a substantially circular shape so that the rotor cam 8 described later, which is operably connected to the rotor 61 of the lock unit 6, can be fitted, and a locking groove 72 is provided at the peripheral portion of the opening to accommodate the locking projection 81 of the rotor cam 8 described later. Is rotatably formed up to 90 ° and is formed parallel to the inner peripheral edge of the rotor insertion hole 71 at an angle slightly exceeding 90 °. Further, on the back surface of the lock member 7, four locking holes 74 are formed around the rotor insertion hole 71 at intervals of 90 °. The locking holes 74 may be locking grooves. Further, the lock member 7 has a thick peripheral surface portion, and a groove 73 is formed in a substantially U-shape in front view so that the convex portion 34 of the slide operating member 3 described above can be inserted into a part of the outer peripheral surface. ..
Further, in this case, since the detent ball mechanism 122 that locks the lock member 7 to the lock position and the lock release position each time the lock member 7 is rotated to the lock position and the lock release position is provided, the thick edge of the front opening 70 is provided. A mounting hole 75 is also provided in a part of the portion, and a detent ball 76 is arranged in the mounting hole 75 so as to be able to appear and disappear from the mounting hole 75 via a detent spring 77, and a detent groove 123 of the latch lock mounting base 1 is provided. It is elastically engageable with. In this case, as described above, a mounting hole is formed at the edge of the lock unit mounting hole 12 in the latch lock mounting base 1, and a detent ball can appear in the mounting hole via the detent spring. Two detent grooves are formed in a part of the thick edge of the front opening of the lock member 7, and the detent balls on the latch lock mounting base 1 side are each on the lock member 7 side. It may be elastically engageable with the detent groove .
Further, in this case, since the indicator 121 is provided together with the display window 120 on the front of the latch lock mounting base 1, a lock display member indicating that the latch operation knob 2 is locked at the edge of the front opening 70 of the lock member 7. 78 and an unlocking display member 79 indicating that the latch operation knob 2 is unlocked are attached. Here, the lock display member 78 is red as a lock display member 78 that indicates that the latch operation knob 2 is locked at the edge of the front opening 70 of the lock member 7 that appears in the display window 120 when the lock member 7 is in the lock position. A solution that indicates that the latch operation knob 2 is unlocked at the edge of the front opening 70 of the lock member 7 that appears in the display window 120 when the stopper seal is attached and the lock member 7 is in the unlocked position. A green stopper seal is attached as the lock display member 79.
In this way, the lock member 7 can rotate around the peripheral surface of the lock unit 6 in the latch lock mounting base 1 at a predetermined rotation angle between the lock position and the unlock position, in this case, 90 °. Each time the lock member 7 is rotated to the lock position and the unlock position, the lock member 7 is retentably installed at these positions by the detent ball mechanism 122.
Then, when the latch operation knob 2 is locked or unlocked by the lock or unlock operation by the lock / unlock operation knob 9 described later, the lock display member 78 or the unlock display member is displayed on the display window 120 in front of the latch lock mounting base 1. A red stopper seal or a green stopper seal is displayed as 79, and when the latch operation knob 2 is unlocked by the unlocking operation with the key of the lock unit 6, the lock is unlocked on the display window 120 in front of the latch lock mounting base 1. A green stopper seal is displayed as the display member 79.

As shown in FIGS. 1 and 2, the rotor cam 8 is projected onto the rotary member 80 rotatably fitted in the rotor insertion hole 71 on the back surface of the lock member 7 and the outer peripheral portion of the rotary member 80, and the rotor insertion hole 71 is projected. It is composed of a locking projection 81 which is arranged in the locking groove 72 and is engaged with one end or the other end in the locking groove 72, and is integrally rotatably attached to the rotor 61 of the lock unit 6 to lock the lock. By inserting the key into the unit 6 and rotating the rotor 61 in a predetermined direction in the unlocking direction, the rotating member 80 is rotated in the rotation direction of the rotor 61 in the rotor insertion hole 71 and locked in the locking groove 72. The protrusion 81 is rotated in the rotation direction of the rotor 61 in a state of being engaged with one end in the locking groove 72, so that the lock member 7 can be rotated to the unlocked position.
In this case, as shown in FIG. 7, the rotor cam 8 has a cylindrical shape having a diameter slightly smaller than the inner diameter of the rotor insertion hole 71 so that the rotating member 80 can be rotated by fitting into the rotor insertion hole 71 on the back surface of the lock member 7. It consists of a disc-shaped rear portion 802 that is slightly larger than the inner diameter of the rotor insertion hole 71 and is rotatable by contacting the front portion 801 of the rotor and the peripheral portion of the rotor insertion hole 71, and is composed of a cylindrical front portion 801 and a disk. A hole with an oval cross section is provided in the center of the rear portion 802 of the shape so that the shaft at the tip of the rotor 61 of the lock unit 6 can be inserted, and the locking projection 81 is oriented axially toward the outer peripheral surface of the front portion 801 of the cylindrical shape. It is formed in a convex shape with the tip surface having an arc shape in cross section.
In this way, the rotor cam 8 is fitted onto the rear end of the rotor 61 of the lock unit 6 and is rotatably attached to the rotor 61 integrally. Then, the key is inserted into the key hole 60 at the lock position where the key hole 60 of the lock unit 6 is sideways, and the rotor 61 is rotated by 90 ° in a predetermined direction, in this case, to the right, so that the rotating member is rotated in the rotor insertion hole 71. The 80 is rotated in the rotation direction of the rotor 61, and the locking projection 81 is rotated in the rotation direction of the rotor 61 from the state where the locking projection 81 is engaged with one end in the locking groove 72 in the locking groove 72 to form the lock member 7. It is rotated to the unlocked position.

As shown in FIGS. 1 and 2, the locking / unlocking operation knob 9 is arranged concentrically with the lock unit 6 on the back side of the lock unit 6 in the latch lock mounting base 1, and the lock member is placed on the back surface of the lock member 7. It is rotatably fixed integrally with 7, and the knob portion 91 projects outward from the locking / unlocking operation knob mounting hole 140 of the base cover 14.
In this case, as shown in FIG. 8, the locking / unlocking operation knob 9 is composed of a thumb turn knob, a cylindrical rotating portion 90 having an open front and a closed back surface, and an elongated rectangular columnar column in the center of the back surface of the rotating portion 90. The front opening edge of the rotating portion 90 is provided with a knob portion 91 that protrudes from the lock member 7, and four locking projections 92 are formed at 90 ° intervals so as to be fitted into the locking holes 74 on the back surface of the lock member 7. .. A triangular mark 9M is attached to the lower end of the knob portion 91 in front of the knob portion 91.
In this way, the locking / unlocking operation knob 9 has the rotating portion 90 in the latch lock mounting base 1 with the lock member 7, the four locking protrusions 92, and the locking hole 74 on the back side of the lock member 7 on the back side of the lock unit 6. The knob portion 91 is integrally rotatably fixed by the engagement of the base cover 14, and the knob portion 91 projects outward from the locking / unlocking operation knob mounting hole 140 of the base cover 14. In this case, when the locking / unlocking operation knob 9 has the knob portion 91 in the vertical direction and the mark 9M is on the lower side of the base cover 14 on the back surface of the latch lock mounting base 1, the lock member 7 is in the latch lock mounting base 1. It is held in the unlocked position (by the detent ball mechanism 122), and when the knob portion 91 is turned 90 ° to the right and the mark 9M is on the left sideways, the lock member 7 is rotated and held in the locked position. On the contrary, when the lateral knob portion 91 is turned 90 ° to the left, the lock member 7 is returned to the unlocked position and the lock is released. The base cover 14 has an OPEN (unlocking position) at a position where the knob portion 91 faces the mark 9M in the vertical direction, and a LOCK (lock position) at a position where the knob portion 91 faces the mark 9M in the horizontal direction. The indication is given. Then, as described above, when the latch operation knob 2 is locked or unlocked by the lock or unlock operation with the lock / unlock operation knob 9, the lock display member 78 or the unlock display member 78 is displayed on the display window 120 in front of the latch lock mounting base 1. A red stopper seal or a green stopper seal is displayed as the lock display member 79, and when the latch operation knob 2 is unlocked by the unlocking operation with the key of the lock unit 6, the display window 120 on the front of the latch lock mounting base 1 A green stopper seal is displayed as the unlocking display member 79.

The latch lock L for the delivery box has such a configuration. When the delivery box is waiting for the receipt of luggage, the latch operation knob 2 is unlocked, and when the luggage is put in the delivery box, the latch operation knob 2 is rotated. Open the door by operation, put the luggage in the delivery box, and before closing the door, lock / unlock operation knob 2 is rotated to rotate the lock member 7 to the lock position to open the latch operation knob 2. When the lock is locked, the door is automatically locked by closing the door, and when taking out the luggage in the delivery box, the lock member 7 is rotated to the unlocked position by inserting the key into the lock unit 6 and turning it in a predetermined direction. Then, the latch operation knob 2 is unlocked.

Next, the operation of each part of the latch lock L will be described together with an example of using the latch lock L for the delivery box with reference to FIGS. 9 (a) and 9 (b) with reference to FIG. 2 (a).

First, when the recipient of the package waits for the delivery box to receive the package, the latch operation knob 2 is unlocked.
At this time, if the door of the delivery box is closed and the latch operation knob 2 is unlocked, no particular operation is required, but if the latch operation knob 2 is locked, the latch operation knob 2 is unlocked. .. Here, the state in which the latch operation knob 2 is locked is a state in which the lock member 7 is locked at the locked position and the groove 73 of the lock member 7 does not match the slide direction of the slide actuating member 3, and the slide actuating member 3 is in a state where the slide actuating member 3 is locked. Since the left side surface of the latch lock mounting base 1 cannot slide to the right from a predetermined position, the latch operation knob 2 cannot rotate. In this case, in order to unlock the latch operation knob 2, the rotor 61 is turned to the right by inserting the key into the key hole 60 at the lock position in the sideways direction of the lock unit 6 and turning it 90 ° to the right in this case. The rotating member 80 is rotated in the rotor insertion hole 71 of the lock member 7 in the rotation direction of the rotor 61, and the locking projection 81 is placed at one end of the locking groove 72 in the locking groove 72. The lock member 7 is rotated from the engaged state in the rotation direction of the rotor 61 to the unlocked position, and is held at this unlocked position by the detent mechanism 122. At this time, as shown in FIG. 9A, the locking / unlocking operation knob 9 connected to the lock member 7 is rotated by 90 ° together with the lock member 7, and the knob portion 91 displays the mark 9M on the lower OPEN display. It will be oriented vertically. As a result, the groove 73 on the outer peripheral surface of the lock member 7 coincides with the slide direction of the slide actuating member 3, and the slide of the slide actuating member 3 is released from the regulation, whereby the latch operation knob 2 is rotatably unlocked. Further, in this case, by rotating the lock member 7 by operating the key of the lock unit 6, the display of the display window 120 on the front of the latch lock mounting base 1 is changed from the red stopper seal as the lock display member 78 to the unlock display member 79. It changes to the green stopper seal, and it can be confirmed at a glance that the latch operation knob 2 has been unlocked. When the key is pulled out from the lock unit 6 after unlocking the latch operation knob 2, since this key is one point removed, the key is turned 90 ° to the left and the key hole 60 is returned to the sideways lock position. Then pull it out. In this case, at the time of unlocking the latch operation knob 2, the key hole 60 of the lock unit 6 is in the vertical unlocking position, and the key is vertically oriented. When the key is turned 90 ° to the left, the rotor 61 is left. Rotated by 90 ° in the direction, the rotating member 80 is rotated in the rotation direction of the rotor 61 in the rotor insertion hole 71 of the lock member 7, and the locking projection 81 is rotated in the locking groove 72 in the locking groove 72. Rotated in the direction of rotation of 61, that is, from one end to the other end of the locking groove 72, the lock member 7 remains fixed in the unlocked position, and only the key hole 60 of the lock unit 6 is returned to the sideways locking position. , You can pull out the key.

Next, when the parcel delivery company puts the parcel in the parcel delivery box, the door is opened by the rotation operation of the latch operation knob 2, and the parcel is put in the parcel delivery box. At this time, since the latch operation knob 2 of the latch lock L is unlocked, turn the knob portion 22 of the latch operation knob 2 to the right from the state of the initial rotation position, open the door, and put the luggage in the delivery box. good.
In this case, when the knob portion 22 of the latch operation knob 2 is turned to the right from the state of the initial rotation position, the convex actuating portion 23 is rotated to the right together with the rotation actuating member 21 of the latch operation knob 2, and is convex to the latch operation knob 2. The slide actuating member 3 is actuated and connected by engaging the shape actuating portion 23 and the front actuating connecting portion 31, and the convex portion 34 of the slide actuating member 3 is a lock member 7 from a predetermined position on the left side surface of the latch lock mounting base 1. The latch 4 is slid to the right while being inserted into the groove 73 of the above, and the latch 4 is actuated and connected to the slide actuating member 3 by engaging the actuating connecting portion 32 on the back surface of the slide actuating member 3 and the receiving portion 41 on the front surface of the latch 4. It is moved in the direction, is immersed in the latch lock mounting base 1 from the latch insertion portion 14 of the latch lock mounting base 1, and the latch 4 is separated from the latch receiving portion of the box body of the delivery box. If the latch operation knob 2 is pulled from this state, the door opens and luggage can be put in the box body.
Then, when the luggage is put in the delivery box, before closing the door, the lock member 7 is rotated from the unlocked position to the locked position by the rotation operation of the locking / unlocking operation knob 9, the door is closed from this state, and the latch operation knob is used. Lock 2.
In this case, after putting the luggage in the delivery box and before closing the door, as shown in FIG. 9B, rotate the locking / unlocking operation knob 9 of the latch lock L 90 ° to the right on the back of the door to mark it. When the 9M is turned sideways toward the LOCK display on the left side, the lock member 7 fixed to the lock / unlock operation knob 9 has a groove 73 on the peripheral surface of the lock member 7 aligned with the slide direction of the slide actuating member 3. The slide of 3 is rotated from the unlocked position for restricting the slide of the slide operating member 3 to the locked position for restricting the slide of the slide operating member 3 without matching the slide direction of the slide operating member 3, and is held at this lock position by the detent mechanism 122. As a result, the slide actuating member 3 cannot slide to the right because the convex portion 34 of the slide actuating member 3 abuts on the outer peripheral surface of the lock member 7 from a predetermined position on the left side surface of the latch lock mounting base 1. The latch operation knob 2 that is actuated and connected to the slide actuating member 3 by engaging the front actuating connecting portion 31 and the convex actuating portion 23 is locked so as not to rotate. Further, in this case, due to the rotation of the lock member 7 by the locking operation of the locking / unlocking operation knob 9, the display of the display window 120 on the front of the latch lock mounting base 1 is changed from the green stopper seal to the locking display member 78 as the unlocking display member 79. It changes to the red stopper seal, and it can be confirmed at a glance that the latch operation knob 2 is locked.
When the door is closed from this state, the latch 4 itself is not restricted from moving from the latch insertion portion 13 of the latch lock mounting base 1 in the immersion direction, so that the latch 4 has a diagonally curved back surface on the tip end side. Is pressed against the opening edge of the box body of the delivery box and is immersed in the latch insertion portion 13 of the latch lock mounting base 1 while compressing the coil spring 5, overcoming the opening edge of the box body, and closing the door. Then, the latch 4 elastically returns in the box body due to the urging force of the coil spring 5, is engaged with the latch receiving portion of the box body, and the door is closed. Since the latch operation knob 2 is already locked, the door is automatically locked and cannot be opened without the key.

Then, when the recipient takes out the luggage in the delivery box, the key is inserted into the lock unit 6 and turned in a predetermined direction to rotate the lock member 7 to the unlocked position and unlock the latch operation knob 2.
In this case, when the key hole 60 of the lock unit 6 is inserted into the key hole 60 at the sideways locking position and turned 90 ° to the right in a predetermined direction, in this case, the rotor 61 is rotated 90 ° to the right. The rotor 80 is rotated in the rotation direction of the rotor 61 in the rotor insertion hole 71 of the lock member 7, and the locking projection 81 is engaged with one end in the locking groove 72 in the locking groove 72. The lock member 7 is rotated in the rotation direction of 61 to the unlocked position, and is held at this locked position by the detent mechanism 122. At this time, the locking / unlocking operation knob 9 connected to the lock member 7 is rotated by 90 ° together with the lock member 7, and the knob portion 91 is oriented vertically with the mark 9M facing the lower OPEN display. As a result, the groove 73 on the outer peripheral surface of the lock member 7 coincides with the slide direction of the slide actuating member 3, the slide of the slide actuating member 3 is released from the regulation, and the latch operation knob 2 is rotatably unlocked. Further, in this case, due to the rotation of the lock member 7 by operating the key of the lock unit 6, the display of the display window 120 on the front of the latch lock mounting base 1 is changed from the red stopper seal as the lock display member to the green color as the unlock display member 79. It can be confirmed at a glance that the latch operation knob 2 has been unlocked instead of the stopper seal.
Thus, when the knob portion 22 of the latch operation knob 2 is turned to the right from the state of the initial rotation position, the convex actuating portion 23 is rotated to the right together with the rotation actuating member 21 of the latch operation knob 2, and the left side surface of the latch lock mounting base 1 is predetermined. At the position of, the slide actuating member 3 actuated and connected to the latch operation knob 2 by engaging the convex actuating portion 23 and the front actuating connecting portion 31 is slid to the right while being inserted into the groove 73 of the lock member 7. The latch 4 operably connected to the slide actuating member 3 by engaging the actuating connecting portion 32 on the back surface of the slide actuating member 3 and the receiving portion 41 on the front surface of the latch 4 is moved to the right, and the latch of the latch lock mounting base 1 is latched. It is immersed in the latch lock mounting base 1 from the insertion portion 13, and the latch 4 is separated from the latch receiving portion of the box body of the delivery box. If the latch operation knob 2 is pulled in this state, the door opens and the luggage can be taken out from the box body.
When removing the key from the lock unit 6 after taking out the luggage, as described above, the key may be turned 90 ° to the left and the key hole 60 may be returned to the sideways locking position and pulled out. Further, when the latch lock L is left unlocked when the door is closed, no particular operation is required, but when the latch lock L is locked, before closing the door, on the back side of the door. As described above, the lock / unlock operation knob 9 may be turned clockwise to rotate the lock member 7 to the lock position, whereby the door is automatically locked only by closing the door.

As described above, according to the latch lock L for the delivery box, as described above, the latch lock mounting base 1, the base cover 14, the latch operation knob 2, the slide operating member 3, the latch 4, and the coil spring Since it is composed of 5, a cylinder lock 6, a lock member 7, a rotor cam 8, and a locking / unlocking operation knob 9, the locking structure can be made simple and low cost can be achieved. Then, in this latch lock L for the delivery box, when the recipient of the package waits for the delivery box to receive the package, the recipient may unlock the latch operation knob 2 and close the door. When the courier puts the luggage in the courier box, the courier opens the door by rotating the latch operation knob 2, puts the luggage in the courier box, and before closing the door (after putting the luggage). However, it may be before loading luggage.) Locking / unlocking operation on the back side of the door The latch operation knob 2 is locked by rotating the lock member 7 to the locked position by rotating the knob 9, and the door is closed by closing the door. When the recipient takes out the luggage in the delivery box, the recipient inserts the key into the lock unit 6 and turns it in a predetermined direction to rotate the lock member 7 to the unlocked position and perform a latch operation. Since the knob 2 is unlocked and the door is opened so that the luggage can be taken out, the simple locking structure of this latch lock L makes it possible to lock and unlock the door with a simple operation, especially for home delivery. When closing the door after storing the luggage in the box, the door is automatically locked by simply closing the door, so it is possible to easily lock the door after storing the luggage in the delivery box.

Further, since the latch lock L for the delivery box is also provided with the following configurations, it has the following advantages.
(1) A detent groove 123 provided in either the edge of the lock unit mounting hole 11 or the edge of the front opening 70 of the lock member 7 in the latch lock mounting base 1 and the mounting hole 75 are formed in the other. A detent ball 76 is arranged in the mounting hole 75 via a detent spring 77 so as to be retractable from the mounting hole 75 and elastically engaged with the detent groove 123, and the lock member 7 is locked and unlocked. Since the detent ball mechanism 122 that locks the lock member 7 to the lock position and the unlock position each time it is rotated to the position is provided, the lock member is inexpensive and has good operability due to such a simple structure. 7 can be reliably locked to a predetermined lock position or a predetermined unlock position.
(2) An indicator 121 for displaying the locked or unlocked state of the latch operation knob 2 is provided on the front surface of the latch lock mounting base 1, and the indicator 121 is provided at the edge of the lock unit mounting hole 12 on the front surface of the latch lock mounting base 1. A display window 120 formed at a position corresponding to the edge of the front opening 70 of the lock member 7 in the latch lock mounting base 1, and a front surface of the lock member 7 appearing on the display window 120 when the lock member 7 is in the lock position. A lock display member 78 attached to the edge of the opening 70 to indicate that the latch operation knob 2 is locked, and a front opening of the lock member 7 that appears in the display window 120 when the lock member 7 is in the unlocked position. It is attached to the edge of 70 and consists of an unlocking display member 79 that indicates that the latch operation knob 2 is unlocked. Since the member 79 or the unlock display member 79 is displayed and the unlock display member 79 is displayed on the display window 120 by the unlocking operation with the key of the lock unit 6, the cost is low due to such a simple structure. In addition, the locked / unlocked state of the latch operation knob 2 can be confirmed at a glance.
(3) The back side of the latch lock mounting base 1 is provided with an internal unlocking function 142 that allows the door to be opened even from the inside of the door, and the internal unlocking function 142 projects from the back of the latch lock mounting base 1 to the back of the latch 4. The knob 43 is inserted at a position corresponding to the knob 43 of the latch 4 of the base cover 14, and the knob 43 is immersed in the latch insertion portion 13 of the latch lock mounting base 1. Since it has a long hole-shaped knob insertion portion 143 that can be moved and guided, the latch lock L can be reliably unlocked even from the inside of the delivery box at low cost due to a simple structure. For example, when a child is trapped in a delivery box and needs to escape urgently, even a child can move the latch 4 directly into the latch lock mounting base 1 by simply moving the knob 43 in one direction. It can be immersive and the delivery box door can be opened immediately.

L Latch lock for delivery box 1 Latch lock mounting base 1a Latch operation knob related parts mounting part 1b Lock unit related parts mounting part 10 Opening 11 Latch operation knob mounting hole 110 Frame 111 Bulkhead 112 Notch 113 Spring receiving part 114 Base cover Mounting boss 115 Latch lock mounting boss 12 Lock unit mounting hole 120 Display window 121 Indicator 122 Detent mechanism 123 Detent groove 13 Latch insertion part 14 Base cover 140 Locking / unlocking operation knob Mounting holes 141a, 141b Screw insertion part S1 Mounting screw 142 Internal unlocking mechanism 143 Knob insertion part 15 Stopper S2 Mounting screw 2 Latch operation knob 21 Rotation actuating member 21F Front part 21R Rear part 22 Knob part 23 Convex actuating part 2M mark 3 Slide actuating member 31 Acting connection part 310 Recessed 32 Actuation Connecting part 320 Recessed part 33 Base part 34 Convex part 4 Latch 41 Receiving part 42 Spring receiving part 43 Knob 5 Spring member (coil spring)
6 Lock unit 60 Key hole 61 Rotor 62 Flange 63 Nut 7 Lock member 70 Opening 71 Rotor insertion hole 72 Locking groove 73 Groove 74 Locking hole 75 Mounting hole 76 Detent ball 77 Detent spring 78 Locking display member 79 Unlocking display member 8 Rotor cam 80 Rotating member 801 Front part 802 Rear part 81 Locking protrusion 9 Locking / unlocking operation knob 90 Rotating part 91 Knob part 92 Locking protrusion 9M mark

Claims (4)

A latch lock for a delivery box that is attached to the door of a delivery box, engages and disengages a latch from a latch receiving portion provided on the box body of the delivery box, and locks and unlocks the latch.
It is formed in a box shape with an opening on the back surface, has a latch operation knob mounting hole on one side of the front latch receiving portion side, and has a lock unit mounting hole on the other side of the front surface. It has a latch insertion portion on the back side of one side surface of the portion side, and can cover the latch lock mounting base mounted at a position close to the latch receiving portion of the door and the opening on the back surface of the latch lock mounting base. A base cover made of a plate, having a locking / unlocking operation knob mounting hole at a position corresponding to the lock unit mounting hole of the latch lock mounting base, and mounted on the back surface of the latch lock mounting base.
A rotary actuating member rotatably arranged inside the latch operation knob mounting hole in the latch lock mounting base, and a knob portion provided in front of the rotary actuating member and protruding outward from the latch operation knob mounting hole. The latch operation knob, which comprises a convex actuating portion protruding toward the back surface of the latch lock mounting base on the back surface of the rotation actuating member, and is attached to the latch operation knob mounting hole.
In the latch lock mounting base, it is slidably arranged on the back side of the latch operation knob from a predetermined position on one side surface side of the latch lock mounting base toward the other side surface or vice versa, and faces the back surface of the latch operation knob. The front surface and the back surface on the opposite side thereof have convex actuating connecting portions protruding toward the front surface and the back surface of the latch lock mounting base, respectively, and the front surface of the latch lock mounting base is provided at a predetermined position on one side surface side of the latch lock mounting base. The convex actuating portion of the latch operation knob is engaged with the actuating connecting portion, and the latch operation knob is rotated in a predetermined direction from the initial rotation position of the knob portion to determine one side surface side of the latch lock mounting base. A slide operating member that slides from the position toward the other side surface,
The tip end side of the slide actuating member is slidably arranged in the latch lock mounting base so as to be retractable from the latch insertion portion on the back side of the slide actuating member, and the slide actuating member is placed on the front surface facing the back surface of the slide actuating member. The slide at a predetermined position on one side surface side of the receiving portion and the latch lock mounting base in a state where the receiving portion has a convex shape protruding toward the back surface and the tip end side protrudes from the latch insertion portion. The actuating connecting portion on the back surface of the actuating member is engaged, and the sliding actuating member slides from a predetermined position on one side surface side of the latch lock mounting base toward the other side surface so that the tip end side is from the latch insertion portion. With the latch embedded in the latch lock mounting base,
The latch is arranged in the latch lock mounting base so as to be pressable in the direction of the latch insertion portion, and normally, the tip end side of the latch is projected from the latch insertion portion, and the receiving portion and the slide of the latch are provided. By engaging the actuating member with the actuating coupling portion on the back surface and engaging with the actuating connecting portion on the front surface of the slide actuating member and the convex actuating portion of the latch operation knob, the slide actuating member is said to be the same. A spring member that positions the latch lock mounting base at a predetermined position on one side surface and holds the latch operation knob in the initial rotation position.
A lock unit installed in the latch lock mounting base with a key hole exposed in the lock unit mounting hole and a rotor facing the lock / unlock operation knob mounting hole of the base cover.
It has a substantially tubular shape with an opening on the front and a rotor insertion hole on the back so that the peripheral surface of the lock unit can be surrounded in the latch lock mounting base, and has a groove on the outer peripheral surface into which the slide operating member can be inserted. It has a locking groove formed in parallel with the inner peripheral edge of the rotor insertion hole by setting a predetermined angle on the inner peripheral edge of the rotor insertion hole, and has a locking groove formed in parallel with the inner peripheral edge of the rotor insertion hole. Around the surface, the lock position that restricts the slide of the slide actuating member without aligning the groove with the slide direction of the slide actuating member and the groove coincide with the slide direction of the slide actuating member of the slide actuating member. A lock member that is rotatably installed between the lock release position that unlocks the slide and
A rotating member that is rotatably fitted to the rotor insertion hole on the back surface of the lock member, and a rotating member that protrudes from the outer peripheral portion of the rotating member and is arranged in the locking groove of the rotor insertion hole in the locking groove. It consists of a locking projection engaged with one end or the other end, and is rotatably attached to the rotor of the lock unit. By inserting a key into the lock unit and rotating the rotor in a predetermined direction, the rotor is rotated. The rotating member is rotated in the rotor insertion hole in the rotation direction of the rotor, and the locking projection is engaged with one end in the locking groove in the locking groove in the rotation direction of the rotor. A rotor cam that is rotated to rotate the lock member to the unlocked position,
In the latch lock mounting base, the lock unit is concentrically arranged on the back side of the lock unit, and is rotatably fixed to the back of the lock member integrally with the lock member, and the knob portion is attached to the base cover. The locking / unlocking operation knob protruding outward from the locking / unlocking operation knob mounting hole,
Equipped with
When waiting for the delivery box to receive luggage, unlock the latch operation knob.
When putting luggage in the delivery box, the door is opened by the rotation operation of the latch operation knob, the luggage is put in the delivery box, and the lock / unlock operation knob is rotated on the back side of the door before closing the door. By rotating the lock member to the lock position, the latch operation knob is locked, and by closing the door, the door is automatically locked.
When taking out the parcel in the delivery box, the lock member is rotated to the unlocked position by inserting the key into the lock unit and turning it in a predetermined direction to unlock the latch operation knob.
A latch lock for delivery boxes that features this. The lock member is held by the detent ball mechanism each time it is rotated to the lock position and the unlock position, and the detent ball mechanism is held at the edge of the lock unit mounting hole or the edge of the front opening of the lock member in the latch lock mounting base. A detent groove provided in either one of the above, and a mounting hole formed in the other, the mounting hole is arranged so as to be able to appear and disappear from the mounting hole via a detent spring, and is elastically engaged with the detent groove . The latch lock for a delivery box according to claim 1, which comprises a detent ball. The front of the latch lock mounting base is provided with an indicator indicating the locked or unlocked state of the latch operation knob, and the indicator is located in the latch lock mounting base at the edge of the lock unit mounting hole on the front of the latch lock mounting base. A display window formed at a position corresponding to the edge of the front opening of the lock member and a latch attached to the edge of the front opening of the lock member that appears in the display window when the lock member is in the lock position. A lock display member that indicates that the operation knob is locked, and a latch operation knob that is attached to the edge of the front opening of the lock member that appears in the display window when the lock member is in the unlocked position. It consists of an unlocking display member that indicates that the lock is unlocked, and the lock display member or the unlock display member is displayed on the display window by the lock or unlock operation with the lock / unlock operation knob, and the lock unit has a lock display member. The latch lock for a delivery box according to claim 1 or 2, wherein the unlock display member is displayed on the display window by an operation of unlocking with a key. The back side of the latch lock mounting base has an internal unlocking function that allows the door to be opened even from the inside of the door, and the internal unlocking function has a knob on the back of the latch that protrudes from the back of the latch lock mounting base. The knob is inserted into the position corresponding to the knob of the latch on the base cover, and the knob is moved in a direction in which the latch is immersed in the latch insertion portion of the latch lock mounting base. The latch lock for a delivery box according to any one of claims 1 to 3.

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