JP2593345Y2 - Door lock device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock device provided in a vending machine or the like, and more particularly, in a locked state, a handle for opening and closing a door is immersed in a door surface and cannot be operated. The present invention relates to a door lock device of a type in which a handle is protruded to enable opening and closing operations.

[0002]

2. Description of the Related Art A door lock device of this type is disclosed in
There is a technique described in Japanese Patent Application Publication No.
As shown in FIG. 1, a handle housing recess 3 is provided on a front wall 2 of a lock case 1 fixed to a door, and a tubular portion 4 is provided on a rear surface (a right surface in FIG. 7) of the front wall 2. The inner peripheral surface of the cylindrical portion 4 is a fitting hole 5 communicating with the handle receiving recess 3.
The cylindrical portion 4 is provided with a latch engagement hole 6.

The handle 7 includes a shaft 8 inserted into the fitting hole 5 and a handle 9 extending from the front end of the shaft 8, and the handle 9 is housed in the handle housing recess 3. Is done. The spring 1 is inserted between the sleeve 10 inserted into the lock case 1 and the shaft 8.
1 is inserted, the handle 7 accommodated in the fitting hole 5 is urged in a direction to protrude from the front wall 2.

[0004] A cylinder lock 12 is fitted to the shaft portion 8, a cylindrical rotating rod 13 is fixed to an end of a rotor of the cylinder lock 12, and a vertical movement latch 14 is engaged with a tip of the cylindrical rotating rod 13. I do. The vertical movement latch 14 is urged by a spring 15 in a direction to engage with the latch engagement hole 6. In the locked state, since the handle 7 is housed in the fitting hole 5 and the handle 9 is housed in the handle housing recess 3, the handle 7 cannot be rotated.

When the key inserted into the cylinder lock 12 is rotated in the unlocking direction, the vertically movable latch 14 which engages with the cylindrical rotation rod 13 is disengaged from the latch engagement hole 6 and the handle 7 and the lock case 1 are rotated. 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 recess 3 so that the handle 9 is rotated to open the door. Can be.

[0006]

When a door lock device of this type is installed in a vending machine or the like, a shock is applied to the locked vending machine or the like to cause the vertical latch 14 to engage with the latch engaging hole 6. There is a problem that a malicious mischief that opens the door by an unauthorized means of disengaging the handle 7 and projecting the handle 7 occurs. An object of the present invention is to solve such a problem, and to provide a door lock device in which a handle 7 does not have a possibility of protruding even when an impact is given to a vending machine or the like.

[0007]

According to a first aspect of the present invention, there is provided a door lock device according to the present invention, wherein a handle housing recess of a handle is provided on a front wall of a lock case fixed to the door. A tubular portion communicating with the handle receiving recess is provided, a locking recess is provided on the inner surface of the tubular portion, and a peripheral wall of a sleeve inserted into the tubular portion overlaps with the locking recess and a shaft of the sleeve. A long hole parallel to the direction is provided, a handle shaft is inserted into the sleeve, a spring is mounted between the shaft and the bottom wall of the sleeve, and a cylinder lock is fixed inside the shaft, provided a predetermined amount of play with respect to the joint cam of the rotor rotation of the cylinder lock of the rotor is to be inserted, a notch is provided on the outer peripheral surface of the eccentric pin provided at an end portion of the joint cam of the handle shaft When the handle is housed in the handle housing recess, The claw insertion hole that overlaps in Kigakaritome recess
Set only, the claw is biased in a direction engaged into being inserted into the claw insertion hole the locking recesses by Rukoto provided engagement groove which engages with the eccentric pin, the joint cam top
When the rotor rotates to the unlocking angle, it rotates together
When rotating the rotor to the locking angle,
When the lock comes to an incomplete locking angle by the amount of play,
At the lock incomplete angle, the notch is
Allows immersion to a position that does not interfere with the inner peripheral surface of the case
Position .

According to a second aspect of the present invention, there is provided a door locking device according to the present invention, wherein 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 the door. A locking recess is provided on the inner surface of the cylindrical portion, and a long hole overlapping the locking recess and parallel to the axial direction of the sleeve is provided on a peripheral wall of the sleeve inserted into the cylindrical portion, and a handle of the handle is provided on the sleeve. A shaft is inserted and a spring is elastically mounted between the shaft and the bottom wall of the sleeve. A cylinder lock is fixed inside the shaft, and the cylinder lock is connected to an end of a rotor of the cylinder lock to rotate the rotor. An eccentric pin is provided at an end of a joint cam having a predetermined amount of play with respect to movement, and a claw insertion is inserted into the shaft of the handle so as to overlap the locking recess when the handle is received in the handle receiving recess. only set the hole, engaged into the locking recesses are inserted into the claw insertion hole An engaging groove for engaging with the eccentric pin is provided on the claw biased in a direction in which the lock holding lever, one end of which is pivotally mounted in the shaft portion of the handle, is attached in a direction for engaging the locking groove. When the eccentric pin moves to the unlocking position, the lock holding lever pressed by the eccentric pin is separated from the engagement groove.

[0009]

According to the door lock device constructed as described above, when the cylinder lock is locked, the rotor is set at the lock angle.
The joint cam is also at the locking angle. Since claws are engaged into the engagement recess of the lock case projects, handle
It is held in a state of being immersed in the handle receiving recess. Since the eccentric pin is in the raised position for preventing the claw from entering, there is no danger that the handle will protrude even if an impact is given to the door locking device.

When the key inserted into the cylinder lock is rotated in the unlocking direction, the rotor of the cylinder lock and the joint cam are moved together.
As a result , the eccentric pin pushes the claw in the immersion direction, the claw is disengaged from the locking recess, the engagement between the handle and the lock case is released, and the handle protrudes. When the key is turned to the unlocking angle and the handle is gripped and turned, the door can be opened.

When the key is returned to the lock angle, the rotor is locked.
And the key can be removed, but the joint
Since the cam has play against the rotation of the rotor , locking is not complete.
All angles are reached and the eccentric pin of the joint cam is
Not to return, and the notch is immersed in the claw
In a position that allows When the handle is pushed in, the hand
When the claw is fully pushed in, the claw engages the locking recess,
When the lock returns to the locked state, the eccentric pin
The joint cam pressed is returned to the locked angle.

In the door lock device provided with the lock holding lever, the claw projects when the cylinder lock is at the lock position, and the lock holding lever is engaged with the engagement groove. In this locked state, the lock holding lever prevents the claw from entering, so that there is no danger that the handle will protrude even if an impact is given to the door locking device.

When the key inserted into the cylinder lock is turned in the unlocking direction, the eccentric pin pushes the lock holding lever out of the engagement groove, pushes the claw in the immersion direction, and the claw is disengaged from the locking recess. The engagement between the handle and the lock case is released, and the handle projects. When the key is turned to the unlocking position and the handle is turned and turned, the door can be opened.

When the key is returned to the locked position, the eccentric pin moves in a direction away from the lock holding lever. However, when the handle is protruding, the eccentric pin comes into contact with the claw fitting hole and is immersed. Prevents engagement with mating grooves. When the handle is pushed in, the claw protrudes and engages with the locking recess, and the protruding claw allows the lock holding lever to be engaged with the engagement groove, thereby returning to the original locked state.

[0015]

FIG. 1 is a longitudinal sectional view of a door lock device A, and FIG. 2 is an exploded perspective view of the door lock device A. FIG. As shown in FIG. 2, the lock case 20 fixed to the door has a handle receiving recess 22 provided on the front surface of a front wall 21, and a tubular portion 23 extends on the rear surface of the front wall. Is formed as a fitting hole 24 communicating with the handle housing recess 22.

As shown in FIG. 1, a bottom wall 25 is provided at a rear portion (right end in FIG. 1) of the cylindrical 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 projection 26 has a through hole 27 formed by combining a large diameter circle 27a and a small diameter circle 27b.
5 and an arc-shaped projection 28 protrudes outside the small diameter circle 27b. 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 has a bottom wall 32 provided at the end of the cylindrical portion 31, and is inserted into the small diameter circle 27 b of the through hole 27 on the outer wall surface of the bottom wall 32. A small-diameter shaft portion 33 is provided, and a stopper 34 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 (FIG. 2). And FIG. 8).

The male screw portion 35 is formed by screwing a male screw on a square pillar-shaped shaft. The male screw portion 35 protruding from the through hole 27 of the lock case 20 has a rotation regulating member 36 having a square hole 36a, and a spring. After the washer 37 is inserted, the nut 3
8 is screwed (see FIG. 2). On the outer peripheral edge of the rotation restricting member 36, a rotation amount restricting protrusion 36b that can contact both side surfaces of the arc-shaped protrusion 28 is provided (see FIG. 8). Therefore, the sleeve 30 can rotate until the rotation amount regulating protrusion 36b comes into contact with both side surfaces of the arc-shaped protrusion 28.

The cylindrical portion 31 of the sleeve 30 has a rear end 39
a overlaps with the locking recess 29, and a long hole 39 parallel to the longitudinal direction of the cylindrical portion 31 is provided. The handle 40 is a sleeve 3
0, and a handle 4 extending substantially perpendicularly from the front end of the shaft 41 and capable of engaging and disengaging with the handle housing recess 22.
The spring 43 is inserted between the shaft portion 41 and the bottom wall 32 of the sleeve. Therefore, the handle 40 is connected to the front wall 21.
It is biased in a more protruding direction.

A cylinder lock 44 having a key hole 44a on the front surface is fixed inside the shaft portion 41, and a tip 45a of a rotor 45 of the cylinder lock 44 is formed in a flat plate shape.
Is inserted into a non-circular hole 46a formed at one end of the joint cam 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 FIG. 7). An eccentric pin 46b is provided at the other end of the joint cam 46, and a notch 47 is formed in the eccentric pin 46b in a planar shape (see FIG. 6).

The shaft 41 of the handle 40 has a handle 4
A claw insertion hole 48 is provided at a position where the claw 49 is inserted into the lock case 20 when it is immersed in the lock case 20. An engagement groove into which the eccentric pin 46 b is engaged is inserted into the claw 49 inserted into the claw insertion hole 48. 50 are provided. Claw 49 tip 49
a is a semicircular notch, and a spring insertion hole 5 with a bottom at the rear end face.
1 is provided, and a spring 52 inserted into the spring insertion hole 51 is pressed against the inner wall surface of the shaft portion 41. Therefore, claw 49 is
It is urged in a direction to protrude from the claw insertion hole 48.

The operation of the door-shaped device A constructed as described above will be described with reference to FIGS. 3 (A), 3 (B) and FIGS.
The lock state, the unlock operation, and the lock operation will be described in the order of (H). 3 (A) is a perspective view showing a door for a like device A of the locking state, the handle 40 is retracted into the lock case 20, the surface of the handle portion 42 accommodated in the handle portion housing recess 22,
Since it is almost flush with the front wall 21, the handle 40
Cannot be rotated.

When the cylinder lock 44 is in the locked position, the tip 46a of the rotor 46 is in an upright position (FIG. 4).
(See (E)), the eccentric pin 46b of the joint cam 46 is at the highest position in FIG. 4 (A). The claw 49 that engages with the eccentric pin 46b has a tip portion 49a engaged with the locking recess 29 (see FIG. 4A). The gap between the engaging groove 50 of the claw 49 and the eccentric pin 46b is small,
Even if an impact is applied to the door lock device A from the outside, the tip portion 49a of the claw 49 protrudes from the sleeve 30, and the handle 40 and the sleeve 30 are held in an engaged state with the tubular lock portion 23 of the lock case 20, and the handle There is no danger that 40 will project.

When the key inserted into the key hole 44a of the cylinder lock 44 is rotated in the unlocking direction, the joint cam 46 is rotated together with the rotor 45 in the clockwise direction in FIGS. When approaching the lock position, the eccentric pin 46b
Is lowered to the position shown in FIG. 4 (B), and the claw 49 enters the rear end portion 39a of the long hole 39 of the sleeve 30 so that the lock case 2
The engagement of the handle 40 is released, the handle 40 projects 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 unlocking position, the joint cam 46 is rotated about 90 degrees with respect to the locking position as shown in FIGS. 4C and 4G, and the eccentric pin 46b is moved to the position shown in FIG.
The claw 49 descends to the position shown in FIG. When the handle 40 of the handle 40 is gripped and turned, the door can be opened.

With the handle 40 protruding, the rotor 45 of the cylinder lock 44 is rotated about 90 degrees by a key to lock the lock angle.
When it is returned, the key can be extracted. Even if the rotor 45 is returned to the locking angle , there is a predetermined amount of play between the tip 45a of the rotor 45 and the non-circular hole 46a of the joint cam 46 , so that the joint cam 46 is shown in FIG.
In this way, the locking is incomplete, returning only about 45 degrees,
Since the eccentric pin 46b does not return to the uppermost position and the notch 47 is directed upward, the tip 4
9a is immersed in the outer peripheral surface of the sleeve 30.

When the handle 40 is pushed in, the claw 49 urged in the projecting direction projects while pushing the eccentric pin 46b and engages with the locking concave portion 29 of the lock case 20, and FIG.
It returns to the locked state of (A).

[0028] Figure 9 is a longitudinal sectional view of the door for unlocking device A ₁ showing a second embodiment of the present invention, FIG. 10 (A) ~ (D) is an operation explanatory view of the door for unlocking device A ₁ . Explaining only the differences between the first embodiment and the second embodiment, the shaft portion 41 of the handle 40 will be described.
A shaft 53 is provided therein, one end of a lock holding lever 54 is pivotally attached to the shaft 53, and a spring 55 is elastically mounted between the lock holding lever 54 and the inner wall surface of the shaft 41 (FIG. 10A). reference).

Therefore, the lock holding lever 54 is
When the claw 49 projects from the long hole 39, the tip of the lock holding lever 54 engages with the engagement groove 50 of the claw 49. The non-circular hole 46 a of the joint pin 46 is
a has a shape and dimensions that fit with almost no gap. Eccentric pin 46b of joint pin 46 and engagement groove 50 of claw 49
Is wider than in the first embodiment (FIG. 10).
(A)). Others are the same as the first embodiment.

The operation of the second embodiment will be described with reference to FIGS.
First, when the handle 40 is sunk 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. The front end 49a projects from the rear end 39a of the long 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 at the projecting position, thereby preventing the claw 49 from being immersed (see FIG. 10A). In this locked state,
Be shocked door for lock device A ₁ from the outside, the claw 49
There is no danger of sinking into the long 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 moves rightward while descending from the uppermost position as shown in FIG. The eccentric pin 46b is used as the lock holding lever 54.
, The lock holding lever 54 rotates clockwise against the spring 55 and is pushed out of the engagement groove 50,
Immersion cannot be stopped. Further, the claw 49 starts to enter the rear end portion 39a of the elongated hole 39 due to the lowering of the eccentric pin 46b (see FIG. 10B).

When the key is further rotated to the unlocking position, the eccentric pin 46b is further lowered and the claw 49 is immersed in the elongated hole 39, so that the engagement between the handle 40 and the lock case 20 is released (FIG. 10). (C), the handle 40 is attached to the front wall 21.
Protruding forward. The handle 42 projecting from the handle housing recess 22 can be rotated 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,
a can protrude, but cannot abut 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 (FIG. 10).
(D)).

When the handle 40 is pushed in, the claw 49 protrudes and engages with the locking recess 29, and the protruding claw causes the lock holding lever 54 to engage with the engagement groove 50, and FIG.
The state returns to the locked state shown in FIG.

[0035]

[Effect of the Invention] The present invention is configured as described above, so that the claw is immersed when the handle is immersed and locked.
Incapable held, can be reliably prevented malicious acts to project the handle shocked door for lock device, collision of the handle
When ejecting, attach the cylinder lock rotor to remove the key.
Even with the lock angle, the claw can be immersed
The structure of the door lock device can be simplified.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a door lock device A of the present invention.

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

FIG. 3A is a door lock device A in a state where a handle is immersed;
FIG. 3B is a perspective view of the door lock device A with the handle protruding.

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

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

6 is a view as viewed in the direction of the arrow X in FIG. 5;

FIG. 7 is a view as seen in the direction of the arrow Y in FIG. 5;

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

9 is a longitudinal sectional view of the door for unlocking device A ₁ of a second embodiment of the present invention.

10 (A) to 10 (D) show door lock devices A _1.
FIG. 7 is an explanatory view of the operation of the eccentric pin, claw and lock holding lever of FIG.

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

[Explanation of symbols]

A, A ₁ Door lock device 20 Lock case 21 Front wall 22 Handle receiving recess 23 Cylindrical portion 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 Support shaft 54 Lock holding lever 55 Spring

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E05B 5/04 E05B 5/00 E05B 13/10 E05B 65/02

Claims (2)

(57) [Scope of request for utility model registration] 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. On the peripheral wall of the sleeve inserted into the cylindrical portion, an elongated hole is provided which overlaps with the locking concave portion and is parallel to the axial direction of the sleeve. A spring is elastically mounted between the bottom walls, a cylinder lock is fixed inside the shaft portion, and a joint cam into which an end of a rotor of the cylinder lock is inserted has a predetermined amount of play against the rotation of the rotor. the provided, on the outer peripheral surface of the eccentric pin provided at an end portion of the joint cam provided notches, the shaft portion of the handle, overlaps the locking recess when the handle is accommodated in the handle portion housing recess only set the claw insertion hole, the engagement is inserted into the claw insertion hole The claw is biased in a direction in which engages in the recess, by Rukoto provided engagement groove which engages with the eccentric pin, the joint cam to rotate said rotor to unlock angle
When the rotor rotates, the rotor rotates to the locking angle.
When rotating, the joint cam is applied by the amount of play.
When the lock is at an incomplete angle,
The notch does not cause the claw to interfere with the inner peripheral surface of the lock case
A lock device for a door, wherein the lock device is located at a position allowing immersion to a position . 2. 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. On the peripheral wall of the sleeve inserted into the cylindrical portion, an elongated hole is provided which overlaps with the locking concave portion and is parallel to the axial direction of the sleeve. A spring is elastically mounted between the bottom walls, a cylinder lock is fixed inside the shaft portion, and a joint cam connected to an end of a rotor of the cylinder lock and having a predetermined amount of play with respect to rotation of the rotor. an eccentric pin on the end portion is provided in the axial portion of the handle, the engaging set only the claw insertion hole overlapping the stop recesses, are inserted into the claw insertion hole when said handle is accommodated in the handle portion housing recess The claw biased in the direction engaging with the locking recess An engaging groove for engaging with the center pin is provided, and a lock holding lever having one end pivotally mounted in the shaft portion of the handle is urged in a direction to be engaged with the engaging groove, and the eccentric pin is moved to the unlocking position. A door lock device wherein the lock holding lever pushed by the eccentric pin is disengaged from the engagement groove when moved.