JPH0624165U - Door lock device - Google Patents

Abstract

(57) [Abstract] [Purpose] When the cylinder lock is locked, the handle engages with the lock case, and when unlocked, the handle is released and the handle protrudes, allowing the door to be opened and the conventional door lock device of the type At
It is an object of the present invention to have a structure in which the engagement is not likely to be released even if a shock is applied. A structure in which a rotor 45 of a cylinder lock 44 is connected to a joint cam 46 having a predetermined angle of play, an eccentric pin 46b is provided on the joint cam 46, and the locking recess 29 provided on the inner surface of the lock case 20 is engaged with the joint 45. Claw 4 urged by
9, an engaging groove 50 into which the eccentric pin 46b is inserted is provided, and the eccentric pin 46b holds the claw 49 in the engaged state while the cylinder lock 44 is locked.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door locking device provided in a vending machine or the like, and more specifically, in a locked state, a handle for opening and closing the door is recessed into the door surface and cannot be operated. The present invention relates to a type of door locking device that can be operated.

[0002]

[Prior art]

 This type of door locking device includes a technique disclosed in Japanese Patent Laid-Open No. 4-115070, and as shown in FIG. 11, the handle portion is housed in the front wall 2 of the lock case 1 fixed to the door. The concave portion 3 is provided, the cylindrical portion 4 is provided on the rear surface of the front wall 2 (the surface on the right side in FIG. 7), and the inner peripheral surface of the cylindrical portion 4 is fitted with the fitting hole 5 communicating with the handle portion accommodating concave portion 3. The tubular portion 4 is provided with a latch engagement hole 6.

The handle 7 is composed of a shaft portion 8 that is inserted into the fitting hole 5 and a handle portion 9 that extends from the front end of the shaft portion 8. The handle portion 9 is housed in the handle portion housing recess 3. To be done. Since the spring 11 is inserted between the sleeve 10 inserted in the lock case 1 and the shaft portion 8, the handle 7 accommodated in the fitting hole 5 is biased in a direction projecting from the front wall 2. ing.

A cylinder lock 12 is fitted on the shaft portion 8, a cylindrical rotary rod 13 is fixed to an end portion of a rotor of the cylinder lock 12, and a vertical movement latch 14 is engaged with a tip end of the cylindrical rotary rod 13. To do. The vertical movement latch 14 is biased by a spring 15 in a direction to engage with the latch engagement hole 6. In the locked state, the handle 7 is housed in the fitting hole 7 and the handle 9 is housed in the handle accommodating recess 3, so that the handle 7 cannot be rotated.

When the key inserted into the cylinder lock 12 is rotated in the unlocking direction, the vertical movement latch 14 that engages with the tubular rotation rod 13 is disengaged from the latch engagement hole 6, and the handle 7 and the lock case are locked. The handle 7 is projected from the front wall 2 by the pressing force of the spring 11 and the handle 9 is projected from the handle accommodating recess 3, so that the handle 9 is rotated to open the door. Can be opened.

[0006]

[Problems to be solved by the device]

 When this type of door locking device is installed in a vending machine or the like, the vertical movement latch 14 is disengaged from the latch engagement hole 6 by applying an impact to the locked vending machine, and the handle 7 is removed. There was a problem that a malicious mischief that opened the door by an illegal means to make it stick out occurred. The present invention is intended to solve such a problem, and provides a door locking device in which the handle 7 is not likely to project even when an impact is applied to a vending machine or the like.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, in a door locking device of the present invention, a handle housing recess of a handle and a tubular portion communicating with the handle housing recess are provided on a front wall of a lock case fixed to a door, A locking recess is provided on the inner surface of the tubular portion, and a long hole that overlaps the locking recess and is parallel to the axial direction of the sleeve is provided on the peripheral wall of the sleeve that is inserted into the tubular portion. The shaft part is inserted and a spring is elastically mounted between the shaft part and the bottom wall of the sleeve, a cylinder lock is fixed inside the shaft part, and the cylinder lock is connected to the rotor of the cylinder lock. An eccentric pin is provided at the end of the join cam having a predetermined amount of play with respect to movement, and a claw insertion hole that overlaps the locking recess when the handle is housed in the handle housing recess is provided in the handle. Inserted in the claw insertion hole and engaged in the locking recess The claw is biased in that direction, provided the engagement groove which engages with the eccentric pin, the eccentric pin, provided with a notch to avoid interference with the claw which is immersed in the cylinder-shaped locked state.

Alternatively, a handle housing recess of the handle and a tubular portion communicating with the handle receiving recess are provided on the front wall of the lock case fixed to the door, and the locking recess is provided on the inner surface of the tubular portion. An elongated hole that overlaps with the locking recess and is parallel to the axial direction of the sleeve is provided in the peripheral wall of the sleeve that is inserted into the tubular portion, and the axial portion of the handle is inserted into the sleeve and the axial portion and the sleeve. A spring is mounted between the bottom walls of the cylinder lock, a cylinder lock is fixed inside the shaft, and the joint cam is connected to the rotor of the cylinder lock and has a predetermined amount of play with respect to the rotation of the rotor. An eccentric pin is provided at the end of the handle, and a claw insertion hole that overlaps the locking recess when the handle is accommodated in the handle accommodating recess is provided in the shaft portion of the handle and is inserted into the claw insertion hole to engage the locking. To the claw that is biased in the direction to engage the recess, An engaging groove for engaging the eccentric pin is provided, and a lock holding lever pivotally attached at one end in the shaft portion of the handle is urged in a direction to engage with the engaging groove so that the eccentric pin is unlocked. The lock holding lever pushed by the eccentric pin is disengaged from the engagement groove when moved to the position.

[0009]

[Action]

 With the door locking device configured as described above, when the cylinder lock is in the locked position, the claw protrudes and engages with the locking recess of the lock case, and the eccentric pin pushed by the claw prevents the claw from entering. Move to the position. In this locked state, the eccentric pin prevents the claw from sinking, so there is no risk of the handle protruding even if an impact is applied to the door locking device.

When the key inserted in the cylinder lock is rotated in the unlocking direction, the eccentric pin pushes the claw in the retracting direction, the claw disengages from the locking recess, and the engagement between the handle and the lock case is released. And the handle protrudes. The door can be opened by rotating the key to the unlocked position, grasping the handle handle and rotating.

When the key is returned to the locked position, the key can be removed. However, since the joint cam has a certain amount of play with respect to the rotation of the key, the notch of the eccentric pin contacts the claw and the Does not extrude in the protruding direction. When the handle is pushed in, the claw that is biased in the projecting direction projects while pushing the eccentric pin and engages with the locking recess of the lock case, returning to the locked state.

In the door lock device provided with the lock holding lever, when the cylinder lock is in the lock position, the claw projects and the lock holding lever engages with the engagement groove. In this locked state, the locking and holding lever prevents the claw from retracting, so that there is no possibility that the handle will project even if an impact is applied to the door locking device.

When the key inserted in the cylinder lock is rotated in the unlocking direction, the eccentric pin pushes the locking holding lever out of the engaging groove and pushes the claw in the retracted direction, and the claw is released from the locking recess. Then, the engagement between the handle and the lock case is released, and the handle projects. The door can be opened by rotating the key to the unlocked position, grasping the handle handle and rotating.

When the key is returned to the locking position, the eccentric pin moves in a direction away from the locking holding lever, but when the handle is protruding, it comes into contact with the claw fitting hole and is in a retracted state. Are prevented from engaging with the engaging groove. When the handle is pushed in, the claw protrudes and engages in the locking recess, and the protrusion of the claw allows the lock holding lever to engage in the engagement groove, and the lock state returns to the original state.

[0015]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of a door locking device A, and FIG. 2 is an exploded perspective view of the door locking device A. As shown in FIG. 2, the lock case 20 fixed to the door includes a front wall 21 provided with a handle portion receiving recess 22 and a front wall provided with a tubular portion 23 extending from the front portion thereof. An inner peripheral surface of 23 is a fitting hole 24 communicating with the handle accommodating recess 22.

As shown in FIG. 1, a bottom wall 25 is provided at a rear portion (an end portion on the right side in FIG. 1) of the tubular portion 23, and a circular projection 26 having a low height is provided on an outer wall surface of the bottom wall 25. As shown in FIG. 8, the circular protrusion 26 has a through hole 27 having a shape in which a large-diameter circle 27a and a small-diameter circle 27b are combined and penetrates the bottom wall 25, and an arc-shaped protrusion is formed outside the small-diameter circle 27b. 28 is projected. A locking recess 29 is provided on the inner peripheral surface of the fitting hole 24 (see FIG. 1).

The sleeve 30 rotatably inserted into the fitting hole 24 is provided with a bottom wall 32 at the end of the tubular portion 31, and the small diameter circle 27 b of the through hole 27 is provided on the outer wall surface of the bottom wall 32. A small-diameter shaft portion 33 to be inserted is provided, a stopper 34 to be inserted into the large-diameter circle 27a is provided on the outer peripheral surface of the small-diameter shaft portion 33, and a male screw portion 35 projects from the end surface of the small-diameter shaft portion 33 ( 2 and 8).

The male screw portion 35 is formed by screwing a male screw on a quadrangular prism-shaped shaft, and the male screw portion 35 protruding from the through hole 27 of the lock case 20 has a rotation restricting member 36 having a square hole 36 a and a spring. After the washer 37 is inserted, the nut 38 is screwed (see FIG. 2). On the outer peripheral edge of the rotation restricting member 36, there are provided rotation amount restricting protrusions 36b capable of contacting both side surfaces of the arc-shaped protrusion 28 (see FIG. 8). Therefore, the sleeve 30 can be rotated until the rotation amount restricting protrusions 36 b come into contact with both side surfaces of the arc-shaped protrusion 28.

A rear end 39 a of the sleeve portion 30 of the sleeve 30 overlaps with the locking recess 29, and an elongated hole 39 parallel to the longitudinal direction of the sleeve portion 31 is provided. The handle 40 has a shaft portion 41 that is inserted into the sleeve 30, and a handle portion 42 that extends substantially at a right angle from the front end portion of the shaft portion 41 and that can be engaged with and disengaged from the handle portion accommodation recess 22. A spring 43 is inserted between 41 and the bottom wall 32 of the sleeve. Therefore, the handle 40 is urged in the direction of protruding from the front wall 21.

A cylinder lock 44 having a keyhole 44a on the front surface is fixed inside the shaft portion 41, a tip end portion 45a of a rotor 45 of the cylinder lock 44 is formed in a flat plate shape, and a tip end of the rotor 45 is a joint cam. It is inserted into a non-circular hole 46a formed at one end of 46 (see FIGS. 5 and 6). The non-circular hole 46a has a play of about 45 degrees with respect to the rotor 45 (see FIGS. 4E to 4H and 7). An eccentric pin 46b is provided at the other end of the joint cam 46, and a flat notch 47 is formed in the eccentric pin 46b (see FIG. 6).

The shaft portion 41 of the handle 40 is provided with a claw insertion hole 48 at a position overlapping the locking recess 29 when the handle 40 is retracted into the lock case 20, and a claw 49 inserted into the claw insertion hole 48. An engaging groove 50 into which the eccentric pin 46b is inserted is provided in the. A front end 49a of the claw 49 is cut out in a semicircular shape, a spring insertion hole 51 with a bottom is provided in a rear end surface thereof, and a spring 52 inserted into the spring insertion hole 51 is pressed against an inner wall surface of the shaft portion 41. Therefore, the claw 49 is biased in the direction of protruding from the claw insertion hole 48.

The operation of the door-shaped device A having the above-described configuration will be described with reference to FIGS. 3 (A), 3 (B) and 4 (A) to 4 (H). The lock operation and the lock operation will be described in this order. FIG. 4A is a perspective view showing the door-shaped device A in a locked state, in which the handle 40 is retracted into the lock case 20, and the surface of the handle portion 42 accommodated in the handle portion accommodation recess 22 is the front wall. Since it is on the same plane as 21, the handle 40 cannot be rotated.

When the cylinder lock 44 is in the locked position, the tip end portion 46a of the rotor 46 is in an upright posture (see FIG. 4E), and the eccentric pin 46b of the joint cam 46 is most raised in FIG. 4A. It's in the right position. The claw 49 that engages with the eccentric pin 46b has a tip end 49a engaged with the locking recess 29 (see FIG. 4A). The clearance between the engaging groove 50 of the claw 49 and the eccentric pin 46b is small, and even if the door locking device A is impacted from the outside, the tip end 49a of the claw 49 projects from the sleeve 30 and the handle 40 and the sleeve 30 are The handle 40 is held in the engaged state by the tubular lock portion 23 of the lock case 20, and the handle 40 does not project.

When the key inserted in the key hole 44a of the cylinder lock 44 is rotated in the unlocking direction, the joint cam 46 together with the rotor 45 is rotated clockwise in FIGS. 4B and 4F. When it comes close to the unlocked position, the eccentric pin 46b descends to the position shown in FIG. 4 (B), the claw 49 retracts into the rear end portion 39a of the long hole 39 of the sleeve 30, and the engagement of the lock case 20 is released. Then, the handle 40 is projected from the front wall 21 of the lock case 20 by the pressing force of the spring 43, and the handle 42 can be rotated (see FIG. 3B). At this time, the claw 49 moves along the long hole 39.

When the key is rotated to the unlocked position, the joint cam 46 rotates about 90 degrees with respect to the locked position as shown in FIGS. 4 (C) and 4 (G), and the eccentric pin 46b moves to the position shown in FIG. It descends to the position shown in (C), and the claw 49 further sinks into the long hole 39. When the handle 42 of the handle 40 is gripped and rotated, the door can be opened.

When the rotor 40 of the cylinder lock 44 is rotated by the key and returned to the locked position while the handle 40 is protruding, the key can be removed. Even when the rotor 45 is returned to the locked position, there is a certain amount of play between the tip portion 45a of the rotor 45 and the non-circular hole 46a of the joint cam 46, so the eccentric pin 46b is shown in FIG. 4 (D). Like the position, it does not return to the uppermost position, and the notch 47 faces upward. Therefore, the eccentric pin 46b does not interfere with the claw 49 whose tip 49a abuts the fitting hole 24 of the lock case 20 and is prevented from projecting.

When the handle 40 is pushed in, the claw 49, which is biased in the protruding direction, protrudes while pushing the eccentric pin 46b and engages with the locking recess 29 of the lock case 20, thereby locking the lock in FIG. 4 (A). Return to the state.

FIG. 9 is a vertical cross-sectional view of a door locking device A ₁ showing a second embodiment of the present invention, and FIGS. 10A to 10D are operation explanatory views of the door locking device A ₁ . . Explaining only the differences between the first embodiment and the second embodiment, a support shaft 53 is provided in the shaft portion 41 of the handle 40, and one end of a lock holding lever 54 is pivotally attached to the support shaft 53 to lock the lock holding lever 54. A spring 55 is elastically mounted between the inner wall surface of the shaft 41 and the shaft 41 (see FIG. 10A).

Therefore, the lock holding lever 54 is urged in the direction of contacting the claw 49, and when the claw 49 projects from the elongated hole 39, the tip of the lock holding lever 54 is engaged with the engaging groove 50 of the claw 49. To do. The non-circular hole 46a of the joint pin 46 is shaped and dimensioned so that the tip end portion 46a of the rotor 45 is fitted with almost no space. The gap between the eccentric pin 46b of the joint pin 46 and the engaging groove 50 of the claw 49 is wider than that in the first embodiment (see FIG. 10 (A)). The other points are the same as in the first embodiment.

The operation of the second embodiment will be described with reference to FIGS. 10A to 10D. First, when the handle 40 is retracted into the lock case 20 and the cylinder lock 44 is in the locked state. The eccentric pin 46b is at the uppermost position in FIG. 10 (A), and the front end 49a of the claw 49 projects from the rear end 39a of the elongated hole 39 and engages with the locking recess 29. On the other hand, the tip of the lock holding lever 54 engages with the engaging groove 50 of the claw 49 located at the projecting position to prevent the claw 49 from entering (see FIG. 10 (A)). In this locked state, even if an impact is applied to the door locking device A ₁ from the outside, there is no possibility that the claw 49 will sink into the elongated hole 39.

When the key inserted into the key hole 44a of the cylinder lock 44 is rotated in the unlocking direction, the eccentric pin 46b descends from the uppermost position and approaches the right side as shown in FIG. 10 (A). , The eccentric pin 46b pushes the lock holding lever 54, the lock holding lever 54 rotates clockwise against the spring 55 and is pushed out from the engagement groove 50, and it becomes impossible to prevent the claw 49 from entering. . Further, as the eccentric pin 46b descends, the claw 49 begins to sink into the rear end portion 39a of the elongated hole 39 (see FIG. 10 (B)).

When the key is further rotated to the unlocked position, the eccentric pin 46b is further lowered and the claw 49 is retracted into the elongated hole 39, so that the engagement between the handle 40 and the lock case 20 is released ( As shown in FIG. 10C, the handle 40 projects forward of the front wall 21. The handle 42 protruding from the handle accommodating recess 22 can be operated to open the door. When the rotor 45 of the cylinder lock 44 is returned to the locked position by the key, the key can be removed.

When the rotor 45 returns to the locked position, the eccentric pin 46b returns to the uppermost position, and the tip 49a of the claw 49 can be projected, but it cannot be projected because it abuts on the inner peripheral surface of the fitting hole 24. Since the claw 49 does not project, the lock holding lever 54 is in contact with the side surface of the claw (see FIG. 10D).

When the handle 40 is pushed in, the claw 49 projects and engages with the locking recess 29, and the locking retaining lever 54 engages with the engaging groove 50 due to the protrusion of the claw 49, as shown in FIG. 10 (A). Return to the locked state.

[0035]

[Effect of device]

 Since the present invention is configured as described above, the claw is prevented from entering when the claw is locked in the locking recess of the lock case. Therefore, it is possible to reliably prevent the malicious act of impacting the door locking device and causing the handle to protrude, and the reliability of the door locking device is improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a door locking device A according to the present invention.

FIG. 2 is an exploded perspective view of the door locking device A of the present invention.

FIG. 3 (A) is a door locking device A with a handle retracted.
3B is a perspective view of the door locking device A with the handle protruding.

4 (A) to 4 (D) are operation explanatory diagrams of an eccentric pin and a claw, and FIGS. 4 (E) to 4 (H) are operation explanatory diagrams of a rotor of a cylinder lock and a joint cam.

FIG. 5 is a front view of an eccentric pin.

6 is a view taken in the direction of arrow X in FIG.

FIG. 7 is a view on arrow Y of FIG.

FIG. 8 is a rear view of the main part of the lock case in which the sleeve is inserted.

FIG. 9 is a vertical sectional view of a door locking device A _{1 according to} a second embodiment of the present invention.

FIG. 10 (A) to FIG. 10 (D) are door locking devices A ₁
FIG. 6 is an operation explanatory view of the eccentric pin, the claw, and the lock holding lever.

FIG. 11 is a longitudinal sectional view showing a conventional example of a door locking device.

[Explanation of symbols]

A, A ₁ Door locking device 20 Lock case 21 Front wall 22 Handle part receiving recess 23 Cylindrical part 24 Fitting hole 29 Locking recess 30 Sleeve 39 Long hole 40 Handle 41 Shaft 42 Handle 43 Spring 44 Cylinder lock 45 Rotor 46 Joint cam 46a Non-circular hole 46b Eccentric pin 48 Claw insertion hole 49 Claw 50 Engagement groove 52 Spring 53 Spindle 54 Lock holding lever 55 Spring

Claims (2)

[Scope of utility model registration request] 1. A handle housing recess of a handle and a tubular portion communicating with the handle housing recess are provided on a front wall of a lock case fixed to a door, and a locking recess is provided on an inner surface of the tubular portion. An elongated hole that overlaps with the locking recess and is parallel to the axial direction of the sleeve is provided in the peripheral wall of the sleeve that is inserted into the tubular portion, and the axial portion of the handle is inserted into the sleeve and the axial portion of the sleeve and the sleeve are inserted. A spring is elastically mounted between the bottom walls, a cylinder lock is fixed inside the shaft, and the end of the joint cam is connected to the rotor of the cylinder lock and has a certain amount of play with respect to the rotation of the rotor. An eccentric pin is provided on the shaft, and a claw insertion hole that overlaps the locking recess when the handle is accommodated in the handle accommodating recess is provided in the shaft portion of the handle. Insert the above eccentric pin into the claw that is biased in the direction of engagement. A locking device for a door, characterized in that an engaging groove for engaging with the eccentric pin is provided, and the eccentric pin is provided with a notch for avoiding interference with the claw that is depressed when the cylinder lock is locked. 2. The handle case receiving recess of the handle and a tubular portion communicating with the handle receiving recess are provided on the front wall of the lock case fixed to the door, and the locking recess is provided on the inner surface of the tubular portion. An elongated hole that overlaps with the locking recess and is parallel to the axial direction of the sleeve is provided in the peripheral wall of the sleeve that is inserted into the tubular portion, and the axial portion of the handle is inserted into the sleeve and the axial portion of the sleeve and the sleeve are inserted. A spring is mounted between the bottom walls, a cylinder lock is fixed inside the shaft, and the end of the joint cam is connected to the rotor of the cylinder lock and has a certain amount of play with respect to the rotation of the rotor. An eccentric pin is provided on the shaft portion of the handle, and a claw insertion hole that overlaps the locking recess when the handle is accommodated in the handle accommodating recess is provided in the shaft portion of the handle. Inserted and urged in a direction to engage with the locking recess The claw is provided with an engaging groove for engaging the eccentric pin, and the locking holding lever pivotally attached at one end in the shaft portion of the handle is urged in a direction to engage with the engaging groove. A door locking device, wherein the locking holding lever pushed by the eccentric pin is disengaged from the engagement groove when moved to the unlocked position.