JPH09151630A - Handle lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the injustice unlocking by providing a spring piece between the mounting shaft of a cylinder lock and the inserting hole of a table piece, fixing a lock pin to the cylindrical part of a handle, and increasing the width of the annular groove of the table piece into which the top end of the pin is fitted closely is increased more than the diameter of the lock pin. SOLUTION: An handle 3 is stored in a lock case 1 through an inner block 7 and a pressing spring 6 so that it can be popped in and out. Also a latch 5, a table piece 11, and a cylinder lock 2 are installed in the cylindrical part 3a of the handle 3 in that order. Then a spring piece 16 is provided between the installation shaft 2a of the cylindrical lock 2 and the inserting hole 11a of the table piece 11, a lock pin 12 is fixed to the cylindrical part 3a of the handle 11, and the width of the annular groove 11c of the table piece 11 into which the top end of the pin 12 is fitted closely is increased more than the diameter of the lock pin. Thus, because the latch does not operate even if the cylinder lock is pulled out and the table piece is rotated, injustice unlocking of the handle lock can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handle lock attached to a door or the like of a vending machine.

[0002]

2. Description of the Related Art As a conventional handle lock, an actual flat lock 6-
The thing shown in 16658 gazette can be mentioned.

The handle lock is composed of a handle having a cylinder portion to which a cylinder is fixed and a handle portion formed at the outer end of the cylinder portion, a lock case for accommodating the handle so that the handle can be inserted, and a handle at the protruding position. A push spring provided in the lock case to urge it toward the inner case, an inner block provided in the lock case and linked to the lock mechanism, and a slidable mount on the inner end of the handle's tubular part for locking. And a latch that selectively engages the lock case and inner block when unlocking, a latch spring that biases the latch in the locking direction, and a non-circular cross-section fixed to the inner cylinder of the cylinder lock at one end. A tail piece having an insertion hole to be fitted into the shaft and an actuating pin at the other end that engages with the engaging portion of the latch, and a retaining pin that prevents the tail piece from falling out of the tubular portion of the handle. And it is configured to include and.

In such a conventional handle lock, since the cylinder lock is mounted on the tubular portion of the handle,
For example, a helical protrusion formed at the tip of a U-shaped mounting member is fixed by pressing it against the male screw portion of the outer cylinder of the cylinder lock.

However, recently, in a handle lock attached to a door of a vending machine, a screw is planted on the end surface of the cylinder lock by using a drill or a tap, and a wrench or the like is used to mount a mounting metal fitting through the screw. There are many cases in which a ridge or the like is forcibly sheared and the cylinder lock is pulled out to break the ridge.

In the conventional handle lock, when the cylinder lock is pulled out, the tail piece can be easily turned with a tool such as a screwdriver, and the engagement between the latch and the lock case is released. The lock mechanism is activated by the operation of, and the door of the vending machine is illegally opened.

[0007]

In the handle lock of the present invention, even if the cylinder lock that forms a part of the handle lock is pulled out from the tubular portion of the handle by urgent means, the latch operation by a tool such as a driver is disabled, It is designed to prevent unauthorized unlocking.

[0008]

In order to achieve the above-mentioned object, the invention according to claim 1 is the above-mentioned conventional handle lock, in which the mounting shaft of the cylinder lock and the insertion hole of the tail piece are provided. A metastable coupling means is provided to increase the pull-out resistance between them, and the tailpiece ring is fitted with the tip of the retaining pin fixed to the tubular part of the handle so that the tailpiece can be displaced a certain distance in the axial direction. It is characterized in that the width of the groove is made sufficiently larger than the diameter of the retaining pin.

According to the invention of claim 2, in the handle lock of claim 1, the metastable coupling means is a spring piece provided between the mounting shaft of the cylinder lock and the insertion hole of the tail piece. According to a third aspect of the present invention, in the handle lock according to the first aspect, the metastable coupling means includes a mounting shaft of a cylinder lock made of a magnetic material and a permanent magnet mounted in the insertion hole of the tail piece. And

Further, the invention of claim 4 is the conventional handle lock described above, wherein the operating pin is attached to the tail piece so as to be slidable in the axial direction of the tail piece as a separate body, and at the same time, the tail piece is attached. A release spring provided inside the tail piece is slidably mounted in the axial direction of the tail piece, and a release spring provided inside the tail piece urges the tail piece toward one end side. The tip of the mounting shaft of the cylinder lock abuts against the removal spring in the insertion hole of the normal tail piece, and the tip of the operating pin projects from the other end of the normal tail piece to the engaging part of the latch. It is characterized in that they are engaged.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the embodiments shown in the drawings. 1 to 4 show the first embodiment, and FIGS. 5 to 7 show the second embodiment.

1 to 3, reference numeral 1 is a lock case fixed to a door 30 of a vending machine, and a handle 3 is housed in the lock case 1 so that the handle 3 can be inserted thereinto.

The handle 3 is composed of a tubular portion 3a for fixing the cylinder lock 2 inside, and a handle portion 3b integrally or separately formed at the outer end of the tubular portion 3a. The tubular portion 3a of the handle 3 is provided. A latch 5, which is slidable in the diametrical direction of the tubular portion, a cylindrical tail piece 11 that is rotatable about an axis, and a fixed cylinder lock 2 are mounted in this order from the rear.

The cylinder lock 2 is fixed to the handle cylinder portion 3a by, for example, mounting the U-shaped mounting metal fitting 8 having the projections 14, 14 forming a part of a spiral at the tip (lower end in FIG. 1). This is performed by pressing the male screw portion of the outer cylinder of the machine with the screw 15.

The above-mentioned lock case 1 has its front side (outside).
Is provided with a flange portion 1d having a recessed portion 1a for accommodating the handle portion 3b of the handle 3, and a tubular portion 1c into which the handle tubular portion 3a is fitted is integrally provided on the rear side thereof.

At the innermost portion of the inner end of the lock case 1, an inner block 7 rotatable about the central axis is mounted. A push spring 6 such as a compression spring is elastically mounted between the front surface of the inner block 7 and the bottom portion (inner end portion) 3c of the handle 3 to urge the entire handle 3 outward (forward). There is.

The operating shaft 7a of the inner block 7 is projected outward (to the right in FIG. 1) from the bottom opening of the lock case tube portion 1c and is linked to a lock mechanism (not shown) including a latch. .

If the push spring 6 biases the entire handle 3 toward the projecting position (left in FIG. 1),
The type and mounting position of the spring are not limited to those in the embodiment.

A latch 5 is attached to the handle cylinder portion 3a slidably in the diametrical direction so that the cylinder portion 3a penetrates at its tip (lower end in FIG. 1).

The latch 5 is a rod-shaped member having a sloped end (lower end) and a notch or other engaging portion 5a in the body, and is biased in the locking direction by a latch spring 9.

When the latch 5 is locked, the tip (lower end) of the latch 5 is engaged with a locking hole 1b provided in the cylindrical portion 1c of the lock case 1 as shown in FIG. 1, so that the latch 5 is unlocked (when the handle is operated). ) Engages the sliding groove 7b formed in the inner block 7 at its base end (upper end).

The columnar tailpiece 11 interposed between the cylinder lock 3 and the latch 5 has an insertion hole 11a having a non-circular cross section at one end (outer end) and the other end (inner end). ) The operating pin 11b that engages with the engaging portion 5a of the latch 5
Having.

The operating pin 11b is the tail piece 11
1 is eccentric with respect to the rotation axis of the cylinder, and when locked, it is at an angular position of 6 o'clock when converted from the front as shown in FIG. 1, but when unlocked, the inner cylinder of the cylinder lock When 2 rotates, the operating pin 11b ascends while rotating, and the latch 5 engaged with this is pulled out from the locking hole 1b of the lock case 1.

Insertion hole 11a of the tail piece 11
A mounting shaft 2a having a non-circular cross section and fixed to the inner cylinder of the cylinder lock 2 is fitted into this.

The tail piece 11 is a tubular portion 3a of the handle 3.
The retaining pin 12 for preventing it from coming off is fixed to the cylindrical portion 3a, and its tip is fitted in an annular groove provided in the tail piece 11.

Since such a handle lock is shown and known in the above-mentioned publication, the unlocking / locking action will be briefly described here.

In the locked state of FIG. 1, a key is inserted into the cylinder lock 2 and the tail piece 11 is rotated in a predetermined direction together with the inner cylinder thereof, and the operating pin 1 of the tail piece 11 is rotated.
By changing the angular position of 1b, the latch 5 engaged with the locking hole 1b of the lock case 1 is pulled up to release the restraint.

Here, since the latch 5 disengages the tubular portion 1c of the lock case 1 and the tubular portion 3a of the handle 3,
The handle 3 projects outward (to the left in FIG. 1) by the urging force of the push spring 6 (not shown).

At this time, the base end (upper end) of the latch 5 engages with the sliding groove 7b of the inner block 7, in other words, enters the sliding groove 7b and slides along the longitudinal direction of the groove 7b. Contact displacement.

Then, the handle 3 and the inner block 7
Since they are integrally connected in the rotation direction via the latch 5, by turning the handle portion 3b of the handle 3 by hand, a lock (not shown) linked to the action shaft 7a of the inner block 7 is formed. The mechanism is activated and the doors of vending machines can be opened freely.

On the contrary, in order to lock the handle lock, the key may be removed and the handle 3 may be returned to the initial position, and all the members are returned to the original position to be in the locked state as shown in FIG. .

Next, the essential parts of the handle lock according to the first embodiment of the present invention will be described.

The mounting shaft 2a of the cylinder lock 2 and the insertion hole 11a of the tail piece 11 have a non-circular cross-sectional shape, such as a rectangular shape or a hexagonal shape, and can be inserted and removed in the longitudinal direction.

Between the mounting shaft 2a of the cylinder lock 2 and the insertion hole 11a of the tail piece 11, as is clearly shown in FIGS. 2 and 3, there is a quasi-stable structure for increasing the withdrawal resistance therebetween. A coupling means is provided.

This metastable coupling means means that, when the mounting shaft 2a of the cylinder lock is pulled out to the outside, if the resistance acting on the tail piece 11 from other members is below a certain value, they are integrated. Means a coupling means having a coupling force that can be moved manually.

In the illustrated first embodiment, as the metastable coupling means, a spring piece 16 which produces a frictional coupling force between the two.
Has been adopted.

In the first embodiment, the reason why the tail piece 11 and the mounting shaft 2a of the cylinder lock are connected by the quasi-stable connection means is, as will be described later, the cylinder lock case for the purpose of tampering. 1 when removing the operation pin 11b of the tail piece 11 from the engaging portion 5 of the latch 5.
This is for surely removing from a.

Although the spring piece 16 in the illustrated example is attached to the insertion hole 11a of the tail piece 11 with the retaining pin 17, the attaching means may be arbitrary and may be fixed by welding or the like. The shape of the spring piece 16 is not limited to the U-shape as shown.

The spring piece 16 may be attached to the attachment shaft 2a of the cylinder lock 2 instead of the tail piece 11 side.

Further, in the first embodiment of the present invention,
The retaining pin 12 fixed to the tubular portion 3a of the handle 3 so that the tail piece 11 can be displaced by a certain distance in the axial direction.
Annular groove 11c of the tailpiece 11 into which the tip of the
Is made sufficiently larger than the diameter of the retaining pin 12.

In short, the width of the wide annular groove 11c of the tail piece 11 is such that the allowable free distance in the axial direction of the tail piece 11 with respect to the retaining pin 12 fixed to the handle tube portion 3a is the operating pin of the tail piece 11. It is made larger than the value obtained by adding the engagement length to the diameter of the retaining pin 12 so as to be larger than the substantial engagement length in the axial direction between 11b and the engagement portion 5a of the latch 5.

In the handle lock of the first embodiment according to the present invention described above, the fitting 8 and the like are broken by using tools such as a drill and a wrench in the locked state of FIG.
As shown in FIG. 4, the cylinder lock 2 is attached to the tubular portion 3a of the handle 3.
It is assumed that it is pulled out from.

Then, since the spring piece 16 existing between the mounting shaft 2a of the cylinder lock 2 and the insertion hole 11a of the tail piece 11 exerts a large frictional resistance therebetween, the cylinder lock 2 is pulled out. The tail piece 11 is within a range allowed by the wide annular groove 11c of the tail piece 11.
Is drawn a certain distance in the axial direction.

As a result, the actuating pin 11b, which has locked the latch 5 in the locking direction (downward) by the elasticity of the latch spring 9 in the position shown in FIG. Operating pin 11b and latch 5
The engagement with the engaging portion 5a is irreversibly released.

In this state, even if the tail piece 11 is rotated by using a tool such as a screwdriver, the tail piece 1 is rotated.
The handle lock cannot be unlocked because the latch lock 5 engaged in the locking hole 1b of the lock case 1 cannot be actuated only by idling 1.

By the way, in the state shown in FIG. 4, the latch 5 released from the engagement of the operating pin 11b of the tail piece 11 is pushed by the latch spring 9 so that the lock case 1 is released.
The locking hole 1b is further deeply engaged than the locking position.

Therefore, once the operating pin 11b of the tailpiece 11 comes out of the engaging portion 5a of the latch 5, the operating pin 11b and the engaging portion 5a occupy different positions in the sliding direction of the latch 5. Become.

In order for the latch 5 to exhibit such an operation, an appropriate gap d is provided between the stopper step portion 5b of the latch 5 and the inner wall of the lock case tube portion 1c in the locked state of FIG. Need to be done.

Therefore, even if the tail piece 11 is pushed from the outside with a tool such as a screwdriver or is pushed while being rotated,
The operating pin 11b and the engaging portion 5a do not return to the initial engaged state, and eventually the handle lock of the first embodiment of the present invention cannot be unlocked.

The present invention is not limited to the illustrated first embodiment, and various modifications can be carried out.

For example, the metastable coupling means is mounted in the mounting shaft 2a of the cylinder lock made of a magnetic material and the insertion hole 11a of the tail piece, and the mounting shaft 2
and a permanent magnet (not shown) movably guided so as to be attracted to the inner end surface of a.

In this case, the cylinder lock 2
When the lock piece 1 is removed from the lock case 1, the operating pin 11b of the tail piece 11 separates from the latch 5 and after the tail piece 11 is stopped by the retaining pin 12, the mounting shaft 2a of the cylinder lock moves further outward. Attached shaft 2
The connection between a and the permanent magnet is released by adsorption, and the cylinder lock 2 is removed with the tail piece 11 left inside the lock case 1.

Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, FIG.
Since the members designated by the same reference numerals as those in the first embodiment shown in FIG. 4 are substantially equivalent to each other, a detailed description of those members will be omitted here, and a different structure will be mainly described.

In FIGS. 5 and 6 showing the second embodiment,
The operating pin 11b is attached to the tail piece 11 as a separate body so as to be slidable in the axial direction of the tail piece 11, and at the same time, the tail spring 11 is provided with a release spring 10 such as a compression spring provided in the insertion hole 11a of the tail piece 11. The piece 11 is biased toward one end side (left side in FIG. 5).

In the tail piece 11 of the second embodiment, a retaining pin 12 which is fixed to the handle tubular portion 3a is fitted in the narrow annular groove 11d on the other end side, so that the handle tubular portion 3a is Rotation is possible about the axis, but sliding in the axial direction is impossible.

Then, at one end of the tail piece 11,
A stop pin 11e is fixed to prevent the operation pin 11b mounted together with the removal spring 10 from coming out through the insertion hole 11a.

Although the stop pin 11e is not essential to the present invention, it is used when assembling the handle lock as a whole or when the cylinder lock 2 is replaced.

As shown in FIG. 6, the actuating pin 11b of this example has a relief piece 11f for a release spring which is partially cut out along a generatrix and a projecting piece 1 whose base end is integrally raised.
1g.

The projecting piece 11g collides with the opposed receiving piece with which the fixed mounting shaft 2a abuts the cylinder lock inner cylinder 2b in a normal state, the spring bearing of the removal spring 10 and the stop pin 11e when the cylinder lock 2 is pulled out. Also serves as an abutting piece.

Further, in FIG. 6, reference numeral 2c is an escape groove provided on the mounting shaft 2a for allowing the stop pin 11e to escape in the axial direction.

The tip end of the mounting shaft 2a of the cylinder lock 2 is normally brought into contact with the projecting piece 11g at the base end of the operation pin 11b as described above against the disengaging spring 10 in the insertion hole 11a of the tail piece 11. At the same time, the tip of the actuating pin 11b is normally projected from the other end of the tail piece 11 through the through hole to be engaged with the engaging portion 5a of the latch 5.

Needless to say, the operating pin 11b is eccentrically mounted with respect to the rotation axis of the tail piece 11.

In the handle lock of the second embodiment, the cylinder lock 2 is locked as shown in FIG. 7 by breaking the mounting bracket 8 and the like with tools such as a drill and a linch in the locked state of FIG. It is assumed that the handle 3 is forcibly pulled out from the tubular portion 3a.

Then, the actuating pin 11b is pushed out toward the base end side through the projecting piece 11g by the urging force of the disengaging spring 10, and the tip of the actuating pin 11b irreversibly disengages from the engaging portion 5a of the latch 5, and at the same time latches. The latch 5, which is biased in the locking direction (downward) by the spring 9, engages deeper by the gap d between the stopper step 5b and the inner wall of the lock case cylinder 1c. (See FIGS. 5 and 7).

In this state, even if the tail piece 11 is rotated by using the rear part of the driver or the like, the tail piece 1 is rotated.
The handle lock cannot be unlocked because the latch lock 5 engaged in the locking hole 1b of the lock case 1 cannot be actuated only by idling 1.

That is, the operating pin 1 of the tail piece 11
Once 1b has come out of the engaging portion 5a of the latch 5, the operating pin 11b and the engaging portion 5a occupy different positions in the sliding direction of the latch 5, and the tailpiece 11
Even if it is pushed from the outside with a tool such as a screwdriver or while being rotated, the operating pin 11b and the engaging portion 5a do not return to the initial engaged state as in the first embodiment. The handle lock of the second embodiment of the invention cannot be broken.

[0067]

According to the handle lock of the present invention described above, even if the cylinder lock is forcibly pulled out using tools, the latch, the handle, the inner block and the like are operatively displaced from the outside to the unlocked position. Since it is not possible, unauthorized unlocking is disabled and the crime prevention effect is enhanced.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of a handle lock of the present invention.

FIG. 2 is an exploded perspective view thereof.

FIG. 3 is an enlarged partial vertical plan view showing a connecting portion between a mounting shaft of a cylinder lock and a tail piece.

FIG. 4 is a vertical cross-sectional side view showing a state in which the cylinder lock is removed for the purpose of breaking the lock in the embodiment of the present invention.

FIG. 5 is a vertical sectional side view showing a second embodiment of the handle lock of the present invention.

FIG. 6 is an exploded perspective view of a main part thereof.

FIG. 7 is a vertical cross-sectional side view showing a state in which the cylinder lock is removed for the purpose of breaking the lock in the second embodiment of the present invention.

[Explanation of symbols]

 1 Lock case 2 Cylinder lock 2a Mounting shaft 3 Handle 3a Tube part 3b Handle part 5 Latch 5a Engagement part 6 Push spring 7 Inner block 11 Tail piece 11a Insertion hole 11b Operating pin 11c Annular groove 12 Retaining pin 16 Spring piece

Claims (4)

[Claims] 1. A handle comprising a cylinder portion having a cylinder lock fixed therein and a handle portion formed at an outer end of the cylinder portion, a lock case for accommodating the handle so that the handle can be inserted, and a handle facing the protruding position. A push spring provided in the lock case for urging, an inner block provided in the lock case and linked to the lock mechanism, and a slidably mounted inner end of the handle tubular portion for locking and unlocking. A latch that selectively engages with the hour lock case and inner block, a latch spring that biases the latch in the locking direction, and a latch shaft that is fixed to the inner cylinder of the cylinder lock at one end and that has a non-circular cross section A han provided with a tail piece having an insertion hole for inserting and an actuating pin engaging the engaging portion of the latch at the other end, and a retaining pin for preventing the tail piece from falling out of the tubular portion of the handle. In the dollar lock, a metastable coupling means is provided between the mounting shaft of the cylinder lock and the insertion hole of the tail piece to increase the pull-out resistance between them, and the tail piece can be displaced a certain distance in the axial direction. A handle lock characterized in that the width of the annular groove of the tail piece into which the tip of the retaining pin fixed to the tubular portion of the handle is fitted is made sufficiently larger than the diameter of the retaining pin. 2. The handle lock according to claim 1, wherein the metastable coupling means is a spring piece provided between the mounting shaft of the cylinder lock and the insertion hole of the tail piece. 3. The metastable coupling means has a mounting shaft of a cylinder lock made of magnetic material and a permanent magnet mounted in an insertion hole of a tail piece.
The handle lock described. 4. A handle comprising a cylinder part having a cylinder lock fixed therein and a handle formed at an outer end of the cylinder part, a lock case for accommodating the handle so that the cylinder can be inserted therein, and a handle facing the protruding position. A push spring provided in the lock case for urging, an inner block provided in the lock case and linked to the lock mechanism, and a slidably mounted inner end of the handle tubular portion for locking and unlocking. A latch that selectively engages the hour lock case and the inner block, a latch spring that biases the latch in the locking direction, and a mounting shaft that is fixed to the inner cylinder of the cylinder lock at one end and has a non-circular cross section. A han provided with a tail piece having an insertion hole for inserting and an actuating pin engaging the engaging portion of the latch at the other end, and a retaining pin for preventing the tail piece from falling out of the tubular portion of the handle. In the dollar lock, the operating pin is attached to the tailpiece as a separate body so as to be slidable in the axial direction of the tailpiece, and is biased toward one end side of the tailpiece by a release spring provided in the tailpiece. At the base end of the operating pin, the tip of the cylinder lock mounting shaft abuts against the removal spring in the insertion hole of the normal tail piece, and the distal end of the operating pin comes from the other end of the normal tail piece. A handle lock characterized by being projected and engaged with an engaging portion of a latch.