JP3073190B2 - Lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a lock for locking between a door of a box and a main body, and is particularly used for vending machines and the like, and as an auxiliary lock in addition to an original lock. Can be used.

[0002]

2. Description of the Related Art In general, when locking between a door and a main body of a conventional box, a lock is arranged on the front of the door or the like, and an auxiliary lock is arranged on a side or the like. Further, as an auxiliary lock, a type in which one end of a chain or the like is fixed to a main body side of a vending machine and a free end of the chain is locked by a lock provided on a door side is known. Further, as another conventional example, a type in which locking is performed by a removable bar member has been proposed.

[0003]

In the lock using the conventional chain described above, the chain portion may be cut by a chain cutter or the like. Further, in the case of a type in which the door is locked by a removable bar member, it is necessary to operate the lock on the front after closing the door, and there is a disadvantage that the locking and unlocking operations are complicated. .

An object of the present invention is to provide a lock in which a locking operation can be completed simply by closing a door of a box in view of the above-mentioned conventional disadvantages.

[0005]

According to the invention of the present invention, a door body which is supported to be openable and closable with respect to a box body containing a product is provided by engaging and disengaging a hook and a lock body. <br/> When locking or unlocking the lock, the lock body is locked.
To maintain the engagement between the hook and the lock body,
The first stop moved in the unlocking direction by the unlocking operation of
And the first stopper moved in the unlocking direction.
Engaged with the first stopper to hold in the unlocked state.
And the closing action of the door
The engagement with the first stopper is released via the switch
Second stopper and slideable and rotatable relative to lock body
And in the locked state, the first stopper
This prevents rotation and engages with the hook, unlocking it.
In the condition, the hook is inserted into the lock body
The engagement between the second stopper and the first stopper is released.
And a latch that slides in the direction
It is characterized by the following.

The lock body is rotated by key operation.
Cam, a first stopper raised and lowered by the cam, a stopper elastic body for urging the first stopper in a rising direction, and holding the lowered first stopper in its lowered state. A second stopper, a second elastic body that urges the second stopper to the holding state, and a second stopper that is slidably and rotatable with respect to the lock body, and the second member that is raised in the locked state. The first stopper prevents rotation and engages with the hook, and releases the lowered state of the first stopper maintained by the second stopper by the hook inserted into the lock body in the unlocked state. And a first elastic body that urges the latch in a direction opposite to the sliding direction . In addition, the lock body has a syringe
A dowel lock is provided, and a key is inserted into the cylinder lock.
When the unlocking operation is performed, the first stopper and the second stopper
The unlocked state is maintained by the engagement, and the key is returned to
The door remains unlocked even when pulled out of the Linder lock.
That is to say.

As described above, according to the lock according to the present invention,
The door can be locked simply by closing the door, and the operation is easy.

[0008]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a case where the lock of the present invention is used in a vending machine or the like, and FIG. 2 is a perspective view showing a state where a main body cover of the lock of the present invention is removed. Here, the lock 10 is a hook 12 fixed to the box body 11 side.
And a lock body 14 fixed to the door 13 side.

The hook 12 is provided with mounting holes 16 formed in the side wall of the box body 11 by two bolts 15, 15.
It is fixed to a nut 16 via a back plate 17 and a lock washer 18.

On the other hand, the lock body 14 is attached to the back plate 2 with two bolts 21 and 21 in a mounting hole 20 formed in the door 13.
2 and a nut 24 via a locking washer 23. A spacer 25, a rubber packing 26, and the like are provided between the lock body 14 and the door 13. Therefore, the lock body 14 can be securely attached to the door 13 (see FIG. 1).

The lock body 14 is formed by zinc die casting or the like, and its periphery is covered with armor plates 27a, 27b, 27c of high hardness made of hardened steel or the like.
8 is covered. The cover 28 is also made of hardened steel having a high hardness (see FIG. 2). A cylinder lock 29 is attached to the front side of the lock body 14,
It can be unlocked with a key outside the figure (see FIGS. 3 and 4).
reference).

As shown in FIG. 5 and the like,
A circular cam 30 is provided at the rear end of the cylinder lock 29 and is rotated around its axis. The cam action of the cam 30 raises (forward in FIG. 9) and lowers (rearward in FIG. 9). A first stopper 31 to be pressed, a spring 31b which is a stopper elastic body for urging the first stopper 31 in an ascending direction, and slides vertically with respect to the lock body 14 as shown in FIG. And a latch 32 rotatably disposed about a shaft 37, a first spring 33 as a first elastic body for urging the latch 32, and a lowered first stopper 31 held in a lowered state. A second stopper 34 for enabling the rotation of the latch 32 about the axis 37 and a second spring 35 as a second elastic body for urging the second stopper 34 downward. Has been established.

The cam 30 is arranged to be rotatable around a rotation center axis a by a cylinder lock 29 attached to the lock body 14. Then, as shown in FIG. 9, when the cam 30 is rotated in the clockwise direction (arrow in the figure), the pin 30a which is erected from the rotation center axis a at an eccentric position
As a result, the engagement plate 31a comes into contact and is pushed rearward to lower the first stopper 31 against the spring 31b.

As shown in FIG. 9, the first stopper 31 is normally urged in the upward (forward) direction by a spring 31b disposed at the bottom thereof. In the locked state shown in FIG. 5, the first stopper 31 is at the raised position, a part of the side surface of the stopper 31 contacts the side surface 32a of the latch 32, and the rotation of the latch 32 about the axis 37 is stopped. It is blocking.

The first stopper 31 is in contact with the lower end surface of the second stopper 34 at the raised position, and prevents the lowering of the second stopper 34. The second stopper 34 is constantly urged downward by a second spring 35 and is slidably disposed in a groove 36 provided in the lock body 14.

As shown in FIG. 5, the latch 32 is rotatable around a shaft 37 erected on the latch and rotatably supported by the lock body 14, and the shaft 37 is mounted on the lock body 14 side. The inside of the provided long groove 38 is slidably disposed in the up-down direction. The latch 32 is urged downward by a first spring 33 in the figure. Further, the first spring 33 biases the latch 32 to rotate the latch 32 counterclockwise with respect to the shaft 37.

When the door 13 is closed as shown in FIGS. 5 to 8, the hook 12 on the box body side
2b.

Next, locking and unlocking operations of the lock 10 constructed as described above will be described with reference to FIGS. FIG. 5 is an explanatory diagram showing the internal structure of the lock 10 in the locked state. Here, the lock body 14 and the hook 12 are engaged, and the latch 32 is connected to the hook 12 by the contact portion 32b.
Abuts on the rising portion 12b. Further, the side surface 32 a of the latch 32 is in contact with the side surface of the first stopper 31 that is rising. Therefore, since the latch 32 cannot rotate clockwise about the shaft 37, the hook 12 does not come off from the lock body 14.

FIG. 6 shows that the cylinder lock 29 is unlocked with a key, and the first stopper 31
FIG. 5 is an explanatory diagram showing a state where is lowered rearward (rear side in the drawing). Referring to FIG. 9 which is a perspective view for easy understanding, when a key is inserted into the gyrinder lock 29 and the cam 30 is rotated by a key operation, a pin 30a eccentrically disposed on the distal end surface of the cam 30 is provided. Pushes the first stopper 31 backward.

When the first stopper 31 is lowered, the latch 32 can rotate around the shaft 37, and at the same time, the second stopper 34 moves forward (downward) by the urging force of the second spring 35. To the first stopper 3
1 is prevented from rising and the falling state is maintained.

The lower surface 34a of the locking projection protruding from the right side of the second stopper 34 comes into contact with the upper surface 39 of the projection provided on the lock body 14 and stops descending. Thus, the unlocked state shown in FIG. 6 is reached, and even if the key is returned and pulled out of the cylinder lock 29, the second stopper 34
Thus, the unlocked state is maintained by maintaining the lowered state of the first stopper 31.

FIG. 7 is an explanatory view showing a state where the lock is unlocked and the hook 12 is pulled out. When the hook 12 is pulled out in the direction of arrow A, the first stopper 31 is lowered backward and is maintained in that state by the second stopper 34, so that the latch side surface 32a and the first stopper 31 contact each other. Without contact, the latch 32 rotates about the shaft 37 against the biasing force of the first spring 33. In this state, the hook 12 can be removed from the lock body 14 and the door 1
3 can be opened.

When the door 13 is opened, the latch 32 is moved by the urging force of the first spring 33 to rotate the shaft 3.
It rotates counterclockwise around 7 and returns to its original state.

Next, in the case of locking, when the door 13 is closed as shown in FIG. 8, the hook 12 fixed to the box body 11 enters from the direction of arrow B. Then hook 1
The latch 32 abutting on the second inclined surface 12a is pushed up in the arrow C direction along the inclined surface 12a. At this time,
The latch 32 rises along the long groove 38 in which the shaft 37 is loosely fitted against the urging force of the first spring 33.

On the other hand, in the latch 32, the latch upper surface 32 c abuts against the lower surface 34 b of the engaging projection projecting from the left side surface of the second stopper 34, and the stopper 34 resists the urging force of the second spring 35. Push up and retreat. When the second stopper 34 retreats, the state of engagement with the first stopper 31 that has been held in the lowered state is released. The first stopper 31 is a spring 31 shown in FIG.
b (moves forward) by the urging force of
Appears at the position where rotation of 2 is prevented.

When the hook 12 is further advanced, the latch 32 gets over the inclined surface 12a and falls into the concave groove.
As shown in (1), the latch 32 moves forward (moves downward) by the urging force of the first spring 33, and the contact portion 32b engages with the rising portion 12b of the hook 12.

At the same time, when the latch 32 moves downward, the second stopper 34 also
5 moves downward by the urging force of the second stopper 3.
The lower surface of the first stopper 31 comes into contact with the upper surface of the first stopper 31 and stops. Thus, a locked state (see FIG. 5) is obtained.

As described above, in the lock according to the present invention, the locking operation is completed simply by closing the door 13 without key operation. Further, since the lock body 14 can be formed by zinc die casting or the like, mass production becomes easier as compared with the related art.

The present invention is not limited to the above-described embodiment, and various design changes can be made based on the technical concept of the present invention.

[0030]

As described above in detail, according to the lock according to the present invention, the door, which is openably and closably supported by the box body containing the product, is engaged with the hook and the lock body.
- locking the disengagement, the lock is unlocked, lock the
The body is engaged with the hook and the lock body in the locked state.
Maintain the state and move in the unlock direction by unlocking the key
The first stopper to be moved and the second stopper moved in the unlocking direction.
The first stop so as to hold the first stopper in its unlocked state.
Engage with the stopper and close the hook of the door.
The first stopper and the first stopper
Between the second stopper where the engagement of the lock is released and the lock body
It is slidably and rotatably arranged, and in the locked state,
The rotation is prevented by the first stopper and the fan is stopped.
Engages with the lock and is inserted into the lock body in the unlocked state.
The second stopper and the first strike
Latch that slides in the direction to release engagement with the
With such a configuration, it is possible to obtain an excellent effect that the lock can be automatically performed by engaging with the hooks provided on the box body only by closing the front door of the box body.

When the lock is unlocked, the engagement between the lock body and the hook can be released by operating the cylinder lock disposed on the lock body disposed on the door side with a key.

The lock body includes a cam rotated by a cylinder lock and a first raised and lowered by the cam.
Stopper, an elastic body for stopper for urging the first stopper in the ascending direction, a second stopper for holding the lowered first stopper in its lowered state, and holding the second stopper for the holding. A second elastic body that urges the lock body, and is slidably and rotatable with respect to the lock body. In the locked state, the raised first stopper prevents rotation and engages with the hook. A latch that is slid by a hook inserted into the lock body in an unlocked state in a direction to release the lowered state of the first stopper maintained by the second stopper; And the first elastic body that urges in the direction opposite to the direction in which the key is pulled out with the door open, so that the second stopper keeps the first stopper lowered. , Lock preparation letter Since a one in which excellent effects that would be locked by simply closing the door body.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a case where a lock according to the present invention is used in a vending machine or the like.

FIG. 2 is a perspective view showing a state in which a lock body cover of the present invention is removed.

FIG. 3 is a side view showing a locked state before the lock.

FIG. 4 is a side view showing an unlocked state before the lock.

FIG. 5 is an explanatory diagram showing an internal structure of a locked state before locking.

FIG. 6 is an explanatory view showing a state in which a stopper is lowered by a cam before locking.

FIG. 7 is an explanatory view showing a state where the lock is unlocked and the hook is pulled out in the lock.

FIG. 8 is an explanatory diagram showing a state in which a door is closed before locking.

FIG. 9 is a perspective view showing a schematic configuration of the lock.

[Explanation of symbols]

10 lock, 11 box body, 12 hook, 12a inclined surface, 13 door body, 14 lock body, 15 bolt, 1
6 mounting holes, 17 back plate, 18 washers, 19
Nut, 20 mounting hole, 21 bolt, 22 back plate, 23 washer, 24, nut, 25 spacer, 26 rubber packing, 27 armor plate, 28 cover, 29 cylinder lock, 30 cam, 30a pin,
31 first stopper, 32 latch, 32a side surface,
32b contact portion, 33 first spring, 34 second stopper, 35 second spring, 36 groove, 37 shaft, 38
Long groove.

Claims (3)

(57) [Claims] A door body supported openably and closably with respect to a box body containing a product is engaged / disengaged between a hook and a lock body.
In the lock to be locked and unlocked by the lock body , the lock body changes the engagement state between the hook and the lock body in the locked state.
Maintained and moved in the unlock direction by unlocking the key
A first stopper and the first stopper moved in the unlocking direction
When engaged with the first stopper to hold
In addition, the latch is actuated by the closing action of the door body hook.
The second stopper is disengaged from the first stopper through the second stopper.
A lock and a stopper are provided so as to slide and rotate with respect to the lock body.
In this state, the rotation is blocked by the first stopper.
Is engaged with the hook and unlocked in the unlocked state.
The second stopper is connected to the second stopper by a hook inserted into the main body.
And is slid in a direction to release the engagement with the first stopper.
And a latch . 2. The product can be freely opened and closed with respect to a box body containing a product.
Engage and disengage the supported door with the hook and lock body
In the lock to be locked and unlocked by the lock, the lock body includes a cam rotated by a key operation, a first stopper raised and lowered by the cam , and a stopper for urging the first stopper in the ascending direction. Elasticity
Holding the body and the lowered first stopper in its lowered state
A second stopper, and a second elasticity for urging the second stopper to the holding state.
It is slidably and rotatable with respect to the body and the lock body, and is locked.
In the state, it is rotated by the raised first stopper.
Is locked and engages with the hook to release the unlocked state.
The second slide by a hook inserted into the lock body.
Under the first stopper maintained by the topper
A latch slid in a direction to release the lowered state, and a first biasing the latch in a direction opposite to the sliding direction.
A lock comprising: an elastic body ; 3. The lock body is provided with a cylinder lock.
When the over unlocking operation crowded and differences in the cylinder lock, the first
Unlocked by the engagement of the second stopper with the second stopper
Is held and the key is returned and pulled out from the cylinder lock.
The lock according to claim 1 , wherein the unlocked state of the door is also maintained .