JP4989989B2 - Lock - Google Patents

Description

  The present invention relates to a lock that enables locking and unlocking by inserting or removing a locking rod that moves up and down into a locking recess.

  For example, a gate, which is an adherend, is provided with a locking rod that protrudes downward in the lower part of the opening / closing end side, and the locking rod is inserted into a locking recess provided on the ground to lock the door. There are cases where a lock and a gremon lock (see, for example, Patent Document 1) are attached. This type of lock has a slide rack that is movable up and down in a lock box. The slide rack can be moved up and down by following a turning operation of a lever handle provided rotatably on the door, and the above-described locking rod is connected so as to be adjustable in protruding length by screwing or the like.

Therefore, when the lever handle is operated and the slide rack is raised and lowered, the locking rod is also raised and lowered, and the lower end of the locking rod is pulled out or inserted into the locking recess provided on the ground. And the door is unlocked or locked. In particular, when the lock is attached to a gate or the like, it is preferable that the lock can be locked for locking (locked in a locked state). Generally, in door locking / unlocking, a dead bolt that is advanced / retracted from the end of the door is inserted into / removed from a strike on the joinery frame side, and the advance / retreat is enabled by a locking / unlocking operation using a cylinder lock. That is, when the cylinder lock is rotated by the key, the unlocking can be performed to retract the dead bolt.
JP 2002-47841 A

  A lock provided on a gate door or the like includes a locking rod as its locking engagement means. The locking rod is moved up and down with respect to a locking recess such as the ground by being connected to the slide rack or the like and moved up and down. The lock can be locked by restricting the lifting and lowering operation of the locking rod, but the mass of the operating member is larger than that of a normal dead bolt, so it can be attached to a gate, for example. In this case, there is a possibility that the locked state of the locking part (locking part) is released by the inertial force of the actuating member by applying vibration or impact by shaking the door. In addition, when a cylinder lock is provided on the gate, even if a locking member that directly controls the lifting / lowering of the slide rack is provided on the locking / unlocking shaft directly connected to the rotation output member of the cylinder lock, There is a problem that it is difficult to form a regulating member with strength, size, and position that can regulate the thickness.

  The present invention has been made in view of the above situation, and provides a lock that allows a lock part to be freely designed at a strength, size, and position capable of restricting the operation of a large-mass working part. The purpose is to improve the locking reliability against unauthorized unlocking actions such as shaking.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The lock according to claim 1 of the present invention is a lock 100 that is inserted into or removed from the locking recess 29 by moving the locking rod 23 up and down, and unlocked.
A slide plate 37 provided in the lock box 17 and moving up and down following the rotation of the lever handle 21;
A slide rack 31 that is vertically moved backward with respect to the slide plate 37 by vertically suspending the locking rod 23 and meshing with the slide plate 37 via gears 71 and 73;
A main restricting plate 53 provided in the lock box 17 so as to be swingable and restricting the lowering of the slide plate 37 in one swinging direction and releasing the restriction in the other swinging direction;
A locking / unlocking shaft 19a that is rotatably provided through the lock box 17 and is connected to the locking / unlocking operation means 19 at the end;
A sub-regulating plate 43 provided on the locking / unlocking shaft 19a for preventing the main regulating plate 53 from swinging in the other swinging direction at the rotational position of the locking / unlocking operation means 19;
Comprising
When the slide plate 37 is raised and the slide rack 31 is lowered and the locking rod 23 is inserted into the locking recess 29, the locking operation of the locking / unlocking operation means 19 is performed. As a result, the sub-regulator plate 43 rotates, and the main restricting plate 53 is restricted from swinging in the other swing direction, and the main restricting plate 37 is moved to the locking portion 37d of the slide plate 37 moved to the upper end. 53 is held in a locked state, the slide plate 37 is prevented from descending, and the slide rack 31 is lifted and the locking rod 23 is pulled out via the gears 71 and 73. To do.

  In this lock, the main restricting plate (lock component) 53 is engaged with the slide plate 37 at the upper end movement position (that is, the locking position) of the slide plate 37 for inserting the engagement rod 23 into the engagement recess 29. The lowering is regulated, and the sub-regulating plate 43 is further brought into contact with the main regulating plate 53 to prevent the main regulating plate 53 from swinging in the regulation releasing direction. That is, the lock structure is composed of two members: a main restriction plate 53 that restricts the lowering of the slide plate 37 and a sub restriction plate 43 that prevents the restriction of the main restriction plate 53 from being released. As a result, the main restricting plate 53 has a strength, size, and position dedicated to preventing the slide plate 37 from being lowered, compared to a structure in which the slide plate 37 is prevented from being lowered directly by one member provided on the locking / unlocking shaft 19a. It becomes possible. That is, the degree of freedom in designing the main regulating plate 53 is increased.

  The lock according to claim 2 is characterized in that the rotation of the lever handle 21 linked to the slide plate 37 is restricted by the slide plate 37 whose lowering is restricted by the main restriction plate 53. To do.

  In this lock, when the locking / unlocking operation means 19 is operated to lock, the sub-regulating plate 43 presses the main regulating plate 53 and swings to the regulating position, and as a result, the lowering of the slide plate 37 is regulated. The The movement-restricted slide plate 37 also makes it impossible to rotate the lever handle 21 linked to the link.

  The lock according to claim 3 is characterized in that the slide plate 37 is urged and arranged at one of the vertically moving ends by an urging means 67 arranged over the lock box 17.

  In this lock, the slide plate 37 is disposed at the upper moving end, and in the locked state where the locking rod 23 is inserted into the locking recess 29, the slide plate 37 is locked by the slide plate 37 biased via the biasing means 67. The rod 23 is biased in the locking recess insertion direction. Further, in the unlocked state where the slide plate 37 is disposed at the lower moving end and the locking rod 23 is removed from the locking recess 29, the locking plate is biased by the slide plate 37 biased through the biasing means 67. 23 is held at the raised position away from the locking recess 29.

  According to the lock of the first aspect of the present invention, a slide plate that moves up and down following the lever handle, a slide rack that is vertically suspended from the slide plate via a gear while hanging the locking rod. A main restricting plate that restricts the lowering of the slide plate in one of the swinging directions and releases the restriction on the other, and a swing of the other of the main restricting plate at the rotational position of the locking / unlocking operating means provided on the locking / unlocking shaft. And a secondary restricting plate that prevents swinging in the movement direction, so that the main restricting plate is locked to the slide plate at the upper end movement position of the slide plate for inserting the lock rod into the lock recess, and the lowering is performed. In addition to the regulation, the sub-regulation plate abuts against the main regulation plate to prevent the main regulation plate from swinging in the regulation release direction. That is, the lock structure is composed of two members: a main restriction plate that restricts the lowering of the slide plate, and a sub restriction plate that prevents the restriction of the main restriction plate from being released. This makes it possible to configure the main restricting plate with the strength, size, and position dedicated to preventing the slide plate from descending, compared to a structure that directly restricts the descending of the slide plate with one member provided on the locking / unlocking shaft. Lowering can be regulated with high reliability. As a result, it is possible to improve the locking reliability against an unauthorized unlocking action such as shaking the door which is the adherend of the lock.

  According to the lock of the second aspect, since the rotation of the lever handle linked to the slide plate is restricted by the slide plate whose lowering is restricted by the main restriction plate, the locking / unlocking operation means is operated to lock. As a result, the lowering of the slide plate is restricted, and as a result, the lever plate cannot be rotated by the movement-restricted slide plate, and the presence or absence of locking / unlocking can be easily grasped by whether the lever handle can be turned. Become.

  According to the lock of the third aspect, since the slide plate is urged and arranged at one of the vertical movement ends by the urging means arranged over the lock box, the slide plate is moved to the upper movement end. In the locked state in which the locking rod is inserted into the locking recess, the locking rod is biased in the locking recess insertion direction by the slide plate biased through the biasing means, and is also engaged by vibration or the like. The stop rod is not easily unlocked. In the unlocked state where the slide plate is disposed at the lower moving end and the lock rod is removed from the lock recess, the lock rod is moved from the lock recess by the slide plate biased through the biasing means. Even if the door, which is the adherend, is opened and closed while being held away from the raised position, the locking rod does not hang down from the door and contact the ground.

Hereinafter, preferred embodiments of a lock according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view of a gate provided with a lock according to the present invention.
The lock 100 according to the present embodiment is preferably used for the lock 100 of the gate 15 that is attached to the gate column 11 via a hinge 13 so as to be freely opened and closed. The lock 100 includes a locking rod 23 that slides downward and protrudes. When the locking rod 23 is inserted into a locking recess 29 provided on the ground 25, the locking rod 23 a at the tip is inserted, thereby restricting the opening of the gate 15, that is, closing the door, and further locking. The locking recess 29 is formed in a cap-shaped component 27 that is inserted into the ground 25.

  The lock 100 has a lock box 17 built in the gate 15. The lock box 17 is provided with a cylinder lock 19, a thumb turn (not shown), and a lever handle 21, and the cylinder lock 19 is exposed on the surface of the gate door 15. A thumb turn (not shown) is exposed on the back surface of the gate 15, and the lever handle 21 is exposed on the front and back surfaces of the gate 15 so as to be rotatable. The lock 100 has a slide rack 31 that is moved up and down following the rotation of the lever handle 21. A connecting block 33 is fixed to the slide rack 31, and the connecting block 33 connects the locking rod 23 to a desired projecting length without being loosened.

FIG. 2 is a side view of the inside of the lock box shown in FIG.
A rack 31 a is formed on the slide rack 31, and the rack 31 a meshes with a later-described gear of the lock 100. The connecting block 33 is fixed to the lower part of the slide rack 31, and the connecting block 33 is moved up and down integrally with the slide rack 31. A male screw 23 a of the locking rod 23 is screwed into the connecting block 33.

  The lock box 17 is provided with a fixing flange 17 a at the top and bottom, and the flange 17 a is screwed to the door plate of the gate 15 with a screw 35. A lever handle shaft 21a is rotatably provided in the approximate center of the lock box 17, and a lever handle 21 that is rotatable on the door surface is fixed to both ends of the lever handle shaft 21a.

3 is an enlarged view of the main part of FIG. 2, and FIG. 4 is an exploded perspective view of the main part of FIG.
A square hole 39a of the cam plate 39 is fixed in the lock box 17 of the lever handle shaft 21a, and the cam plate 39 has an engagement pin 41 fitted in a pin hole 39b at the tip. A slide plate 37 is provided in the lock box 17 so as to be movable up and down. The slide plate 37 is moved up and down as the lever handle 21 is rotated by engaging the engagement pin 41 with the engagement hole 37b.

  The slide plate 37 is guided up and down by engaging the lock box side guide pin 65 in the lower slot 37c. A pin hole 37e shown in FIG. 4 is formed in the convex portion of the slide plate 37, and the spring pin 63 is inserted into the pin hole 37e. A holding spring 67 as an urging means is disposed between the lock box side guide pin 65 and the spring pin 63, and the holding spring 67 urges and arranges the slide plate 37 at one of the vertically moving ends.

  The slide plate 37 is prevented from rising when the lower end of the long hole 37 c abuts against the lock box side guide pin 65. The cam plate 39 abuts against a stopper pin 61 projecting from the lock box 17, thereby preventing further clockwise rotation. Thereby, the rotation angle of the lever handle 21 is regulated within a range of approximately 90 °.

  The lock box 17 is rotatably provided with a locking / unlocking shaft 19a connected to a cylinder lock 19 or the like as locking / unlocking operation means. The locking / unlocking shaft 19a has one end connected to the cylinder lock 19 on the door surface and the other end connected to the thumb turn knob on the back of the door. A dharma 43, which is a sub-regulatory plate, is fixed to the locking / unlocking shaft 19a in the lock box 17, and the dharma 43 abuts against a pair of convex portions 49, 51 standing in the lock box 17, thereby The rotation angle is restricted to a range of approximately 90 °. A protrusion 43a is formed in the dharma 43, and the protrusion 43a is pressed against one end of an urging spring 47 supported by the support shaft 45, and is thereby urged and arranged in one of the rotation ranges.

  A substantially triangular pressing protrusion 43b protrudes from the outer periphery of the dharma 43, and the pressing protrusion 43b presses a locking board (locking component) 53, which is a main regulating plate described later.

  The slide plate 37 is formed with a rack 37a in which teeth are arranged in the vertical direction. A small gear 73 is rotatably supported on the lock box 17 by a support shaft 69, and the small gear 73 meshes with a rack 37a. The small gear 73 is provided with a large gear 71 that rotates integrally. The large gear 71 meshes with the rack 31 a of the slide rack 31. In the slide rack 31, a long hole 31 c that is long in the vertical direction is formed in the vertical flange part 31 b in which the rack 31 a is formed, and the long hole 31 c is guided to a guide part 35 a provided inside the gate door 15.

  In the lock 100, when the lever handle 21 is rotated, the slide plate 37 is moved up and down, and the small gear 73 and the large gear 71 are rotated accordingly, and the slide rack 31 meshing with the large gear 71 is driven. Then, the locking rod 23a of the locking rod 23 is pulled out or inserted into the locking recess 29. That is, the slide rack 31 is moved upside down with respect to the slide plate 37.

  In the lock box 17, the locking board 53, which is the main restriction plate, is swingably provided on the support shaft 55, and the locking board 53 restricts the lowering of the slide plate 37 in one of the swing directions and the swing direction. This restriction is lifted on the other side. The locking board 53 is locked to the locking portion 37d of the slide plate 37 moved to the upper end and restricts the downward movement of the slide plate 37 (see the state of FIG. 3). That is, the removal of the locking rod 23a from the locking recess 29 is restricted. The locking board 53 is biased counterclockwise in FIG. 3 by a biasing spring 57 whose one end is in contact with the support shaft 59.

  Further, the rotation of the locking board 53 in the unlocking direction (counterclockwise rotation in FIG. 3) is restricted by the pressing protrusion 43b of the dharma 43 described above. That is, the dharma 43 prevents the locking board 53 from swinging in the other swinging direction at the rotational position in the locking direction of the locking / unlocking operation means. That is, the lowering of the slide plate 37 is locked in two stages by the locking board 53 and the dharma 43 that regulates the locking board 53.

  In the lock 100, when the locking / unlocking operation means is operated to lock, the dharma 43 presses the locking board 53 to swing to the restricting position, and as a result, the lowering of the slide plate 37 is restricted. As a result, the rotation of the linked lever handle 21 is disabled by the movement-restricted slide plate 37, so that the presence or absence of locking / unlocking can be easily grasped depending on whether or not the lever handle can be rotated. Yes.

Next, the operation of the lock 100 will be described.
FIG. 5 is an operation explanatory view showing the lock box in the rod locking state at the time of unlocking (a) and the lever handle and the locking rod in (b).
In the rod locking state when the cylinder lock 19 is not locked, the slide plate 37 is moved to the upper end position, and the slide rack 31 is disposed at the lower end position, so that the locking rod 23 is locked to the locking recess 29. The opening and closing of the door is restricted. In this state, the locking board 53 is rotated and arranged in a direction to retract from the position of engagement with the slide plate 37 by the biasing spring 57.

FIG. 6 is an operation explanatory view showing the lock box before insertion or removal of the rod in (a), and the lever handle and the locking rod in (b).
When the lever handle 21 is rotated, the slide plate 37 is lowered, and the slide rack 31 is raised via the small gear 73 and the large gear 71. As a result, the locking rod 23 is removed from the locking recess 29, and the gate 15 can be opened.

FIG. 7 is an operation explanatory view showing the lock box in a state where the rod is removed at the time of unlocking, and (a) showing the lever handle and the locking rod.
When the lever handle 21 is completely rotated in the rod locking release direction, the slide rack 31 is disposed at the lower end and is held at that position by the holding spring 67. That is, the locking rod 23 is held at the raised position.

FIG. 8 is an operation explanatory view showing the lock box in the locked state of the rod at the time of locking (a) and the lever handle and the locking rod in (b).
When the cylinder lock 19 or the thumb turn knob is locked in a state where the gate 15 is closed, the lever handle 21 is rotated and the locking rod 23 is inserted into the locking recess 29, the locking / unlocking shaft 19a is counterclockwise. The pressing protrusion 43 b presses the upper surface of the locking board 53. When the pressed locking board 53 is rotated clockwise, the locking board 53 is locked to the locking portion 37d of the slide plate 37 disposed at the upper end, thereby reliably preventing the slide plate 37 from descending.

  As described above, in the lock 100, the locking board 53 is locked to the slide plate 37 at the upper end movement position (that is, the locking position) of the slide plate 37 for inserting the locking rod 23 into the locking recess 29, and lowered. And the dharma 43 further abuts against the locking board 53, and the rocking board 53 is prevented from swinging in the restriction release direction. That is, the lock structure is composed of two members: a locking board 53 that restricts the lowering of the slide plate 37 and a dharma 43 that prevents the restriction of the locking board 53 from being released. As a result, the locking board 53 can be configured with the strength, size, and position dedicated to preventing the slide plate 37 from being lowered, compared to a structure in which the slide plate 37 is prevented from descending directly by one member provided on the locking / unlocking shaft 19a. It becomes. That is, the degree of freedom in designing the locking board 53 is increased.

  Further, in a locked state where the slide plate 37 is disposed at the upward movement end and the lock rod 23 is inserted into the lock recess 29, the lock rod 23 is engaged by the slide plate 37 biased via the holding spring 67. It is biased in the insertion direction of the stop recess 29. In the unlocked state where the slide plate 37 is disposed at the lower movement end and the locking rod 23 is removed from the locking recess 29, the locking rod 23 is urged by the slide plate 37 biased via the holding spring 67. Is held at the raised position separated from the locking recess 29.

  Therefore, according to the lock 100 described above, the slide plate 37 that moves up and down following the lever handle 21 and the locking rod 23 are suspended, and the slide plate 37 is turned upside down via the small gear 73 and the large gear 71. The slide rack 31 to be moved, the locking board 53 for restricting the lowering of the slide plate 37 in one of the swing directions and releasing the restriction on the other, and the rotation in the locking direction of the locking / unlocking operating means provided on the locking / unlocking shaft 19a. The locking board 53 is provided with a dharma 43 that prevents the locking board 53 from swinging in the other swinging direction, so that the locking board 53 is inserted at the upper end movement position of the slide plate 37 for inserting the locking rod 23 into the locking recess 29. Is locked to the slide plate 37 to restrict its lowering, and further, the dharma 43 abuts against the locking board 53 to lock the locking board. 53 prevents the swinging of the deregulation direction.

  That is, the lock structure is composed of two members: a locking board 53 that restricts the lowering of the slide plate 37 and a dharma 43 that prevents the restriction of the locking board 53 from being released. Thus, compared to a structure in which the lowering of the slide plate 37 is directly controlled by one member provided on the locking / unlocking shaft 19a, the locking board 53 can be configured with strength, size, and position dedicated to preventing the slide plate 37 from being lowered, The slide plate 37 can be regulated to descend (lock down) with high reliability. As a result, it is possible to improve the locking reliability against an unauthorized unlocking action such as shaking the gate 15 that is the adherend of the lock 100 or operating the lever handle 21 roughly.

  Further, since the slide plate 37 is urged and arranged at one of the up and down movement ends by the holding spring 67 arranged over the lock box 17, the slide plate 37 is arranged at the upper movement end and the locking rod In the locked state in which the lock 23 is inserted into the lock recess 29, the lock rod 23 is biased in the lock recess insertion direction by the slide plate 37 biased via the holding spring 67, and the lock rod is also vibrated by vibration or the like. 23 is not easily unlocked. In the unlocked state where the slide plate 37 is disposed at the lower movement end and the locking rod 23 is removed from the locking recess 29, the locking rod 23 is urged by the slide plate 37 biased via the holding spring 67. Is held in the raised position away from the locking recess 29, and the locking rod 23 does not hang down from the gate 15 and come into contact with the ground 25 even when the gate 15 as the adherend is opened and closed.

  In addition, it is preferable that the cap-shaped component 27 is detachably attached to the locking recess 29 provided on the ground 25. Thereby, the dust that has entered the locking recess 29 can be easily removed by detaching the cap-shaped component 27.

  In the above-described embodiment, the example in which the locking rod 23 protrudes from the lower end of the gate 15 has been described. However, the locking rod 23 may protrude from the upper end, and further, the Gremmon tablet that protrudes simultaneously from the upper and lower ends. A locking rod may be used.

It is a front view of the gate door provided with the lock according to the present invention. It is a side view inside the lock box shown in FIG. FIG. 3 is an enlarged view of a main part of FIG. 2. It is a principal part disassembled perspective view of FIG. It is operation | movement explanatory drawing which represented the lock box in the rod latching state at the time of unlocking to (a), and represented the lever handle and the latching rod to (b). It is operation | movement explanatory drawing which represented the lock box before the rod insertion or after removal | extraction from (a), and the lever handle and the latching rod to (b). It is operation | movement explanatory drawing which represented the lock box in the rod extraction state at the time of unlocking to (a), and represented the lever handle and the latching rod to (b). It is operation | movement explanatory drawing which represented the lock box in the rod locking state at the time of locking to (a), and represented the lever handle and the locking rod to (b).

Explanation of symbols

17 ... Lock box 19 ... Locking / unlocking operation means (cylinder lock)
19a ... Locking / unlocking shaft 21 ... Lever handle 23 ... Locking rod 29 ... Locking recess 31 ... Slide rack 37 ... Slide plate 43 ... Sub-regulator plate (Dharma)
53 ... Main regulating plate (locking board)
67 ... Biasing means (holding spring)
71 ... Large gear 73 ... Small gear 100 ... Drop lock

Claims (3)

A lock that is locked or unlocked by inserting or removing the locking rod by moving the locking rod up and down,
A slide plate installed in the lock box and moved up and down following the rotation of the lever handle;
A slide rack that is vertically moved backward with respect to the slide plate by vertically suspending the locking rod and meshing with the slide plate via a gear;
A main restricting plate that is swingably provided in the lock box and restricts the lowering of the slide plate in one of the swing directions and releases the restriction in the other of the swing directions;
A locking / unlocking shaft, which is rotatably provided through the lock box, and which is connected to a locking / unlocking operation means at an end;
A sub-regulating plate that is provided on the locking / unlocking shaft and prevents the main regulating plate from swinging in the other swinging direction at a rotational position in the locking direction of the locking / unlocking operation means;
Equipped with,
When the slide plate is lifted and the slide rack is lowered and the locking rod is inserted into the locking recess, the locking operation of the locking / unlocking operation means is performed, thereby performing the locking operation. The regulation plate rotates, the oscillation of the main regulation plate in the other oscillation direction is regulated, and the state where the main regulation plate is latched to the latching portion of the slide plate that has moved to the upper end is held, 2. A lock according to claim 1, wherein the slide plate is prevented from descending, and the slide rack is prevented from being lifted and the locking rod is withdrawn via the gear .   2. The lock according to claim 1, wherein rotation of the lever handle linked to the slide plate is restricted by the slide plate whose lowering is restricted by the main restricting plate.   The lock according to claim 1 or 2, wherein the slide plate is urged and arranged at one of the vertically moving ends by an urging means arranged over the lock box.

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