JP3400778B2 - Lock - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a door lock (also referred to as a handle lock) in a vending machine or the like, and more specifically, it has a simple structure and a low manufacturing cost. The present invention also relates to a lock that is excellent in crime prevention and also suitable for recycling.

[0002]

2. Description of the Related Art Conventionally, a lock 1a, as shown in FIGS. 11 to 12, is provided on an inner case 2, an inner cylinder 3 contained therein and slidable in the front-rear direction, and a front end portion of the inner cylinder 3. Handle 5 made of zinc die cast for opening and closing with the gripping part 4
And a handle case 6 made of zinc die-casting, which is a frame for loosely rotatably fitting and supporting the handle 5 and the inner case 2.
Consists of. The inner cylinder 3 is provided with a barb protruding in the radial direction from the outer peripheral surface, and by the barb protruding, the locking hole 8 of the inner case 2 and the locking hole 1 of the handle case 6 are provided.
It is designed to be locked at 8. This lock 1a is shown in FIG.
As shown in FIG. 3, it is fixed to a door 9 of a vending machine or the like with bolts or the like.

By inserting a key into the key groove of the handle 5 and rotating the key, the barb sinks into the inner cylinder 3, and the engagement hole 8 of the inner case 2 and the locking hole 18 of the handle case 6 are formed. The engagement action of is released. Then, the inner cylinder 3
And the gripping portion 4 is projected forward by the biasing force of the coil spring 7 of the elastic member, and the gripping portion 4 is indicated by an arrow a in FIG.
13 is rotated in the releasing direction, the locking / releasing lever 10 in FIG. 13 is rotated in the releasing direction to be unlocked,
The door 9 can be opened.

[0004]

However, in the above-mentioned conventional lock, the handle case 6 and the inner case 2 are provided.
Since the engaging action structure between the inner cylinder 3 and the inner cylinder 3 uses a coil spring or the like to project the barbs in the radial direction, the number of parts increases and the structure becomes complicated. There is a problem that it is necessary to take stronger protection, and it is also necessary to consider recycling of parts. The lock according to the present invention is proposed to solve such problems.

[0005]

SUMMARY OF THE INVENTION The gist of the present invention to solve the above-mentioned problems of the lock is a hand which is a frame of the lock.
An inner cylinder is provided in the case, and a through hole that communicates with the inner cylinder and the inner case that encloses the inner cylinder at the lock before unlocking by rotating the inner cylinder with a key to move the inner cylinder forward. A spherical body that is loosely inserted in the inner cylinder and is dropped inside the inner cylinder in the radial direction of the cam along the shape of a cam that is mounted inside the inner cylinder and rotated by a key. , The cam is
The concave part that drops the sphere inward in the radial direction has a single or
Provided at multiple locations, the handle case has the desired shape
Stack multiple metal plates punched into
The required number of metal plates from the front end to the rear end
Hardened, and the V
It is configured by welding and fixing the joint parts together.
In the mounting hole provided by tapping the handle case
The handle case cover that can be attached is located on the front side of the lock.
There is no tightening groove on the screw head to be placed,
It is a detachable operation part on the end surface of the screw rod-shaped part where the groove is engraved.
Assembled with screws with grooves for tightening,
And it is recyclable.

Between the inner cylinder and the inner case, the unlocked state
The inner cylinder and the inner case rotate integrally around the axis.
Regulated so that it includes a sphere.
It is a waste.

The gist of the lock according to the present invention is
An inner cylinder is provided on the handle case, which is a frame, and
Move the inner cylinder forward and rotate the inner cylinder to unlock
In the lock to be locked, the inner cylinder and the inner casing containing the inner cylinder.
The inner cylinder is loosely inserted into the through hole communicating with the
Along the shape of the cam that is installed inside and is rotated by the key
Is dropped inward in the radial direction of the inner cylinder, and the inner cylinder and the inner case are
Has a spherical body for releasing the engagement of the
In the surface, the concave portion that drops the sphere radially inward,
Provided at one or more locations in the circumferential direction, the rear end of the inner cylinder
Urging the cam to rotate in the locking direction
An elastic member is installed to move the inner cylinder forward with the key.
In the unlocked state, remove the key from the inner cylinder and
When the cylinder is pushed backward, it is twisted by the unlocking operation.
The cam is rotated in the locking direction by the urging force of the elastic member.
The sphere moves radially outward along the shape of the cam
The inner cylinder and inner case are engaged and locked, and the key is removed.
That is, it can be automatically locked in the open state.

[0008]

[0009]

The lock according to the present invention has a simple structure in which the inner case and the inner cylinder are engaged with each other by a spherical body that moves in the radial direction along the cam shape.
Unlike the conventional example, it is not necessary to bias the engaging member with a spring or the like, and the invention of the present invention can reduce the number of parts. Further, the action of moving the sphere in the radial direction is that the wall surface of the through hole of the inner cylinder abuts the sphere by the urging force of an elastic member urging the cam to rotate in the locking direction, for example, a torsion spring. By pushing it toward the cam recess side.

Further, since the handle case fixed to the door of a device such as a vending machine is formed by laminating a plurality of metal plates, the manufacturing is simple and the cost of the entire case is reduced. Further, since the required number of metal plates are hardened from the front end to the rear end on the handle side, it is possible to increase the time until the door is opened in the event of a drill breakage, etc., and crime prevention measures are improved. .

[0012]

Since the mounting member for assembling a part of the handle case is provided with the detaching operation portion on the back side of the lock and cannot be detached from the front side, even if the handle or the handle case cover is broken, the screw can be easily loosened from the front side. no Ru der thing. Furthermore , since a spherical body is provided between the inner cylinder and the inner case so as to integrally rotate the inner cylinder and the inner case around the axis in the unlocked state, both are prevented from rattling. It is rotated smoothly.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a lock according to the present invention will be described with reference to the drawings. To facilitate understanding of the invention, portions corresponding to those of the conventional example will be described with the same reference numerals as those of the conventional example.

The lock 1 according to the present invention is, for example, a lock attached to a main body of an automatic vending machine or an opening / closing door, and as shown in FIGS. 1 to 3, is a lock frame body fixed to the door with screws. A handle case 6a, a cylindrical inner case 2a rotatably included in the handle case 6a, and a cam that is included in the inner case 2a and is slidable in the front-rear direction and rotatable by a key. Inner cylinder 3a
A handle 5b for opening / closing operation provided at the front end of the inner cylinder 3a and a lock provided at the rear end of the inner case 2a.
An elastic member that is interposed between the release lever 10a, the lid 2d on the rear end side of the inner case 2a, and the rear end of the inner cylinder 3a, and urges the inner cylinder 3a to push forward. It has a coil spring 7a which is a member. Reference numeral 5a in FIG.
The keyway which inserts a key is shown.

As shown in FIGS. 4 (a) and 4 (b), the handle case 6a and the handle case cover 6b are mounting members provided with an attaching / detaching operation portion on the back side of the lock to prevent the attaching / detaching operation from the front side. Assembled. This mounting member has, for example, as shown in the figure, an end surface 11b (on the back side of the lock on the back side of the lock) where the screw head 11a arranged on the front side of the lock does not have a groove for tightening and the screw groove is engraved. There is a special screw 11 provided with a groove (for a driver) for tightening which is a detachable operation part. The case cover 6b is fastened and assembled to the case 6a by the screws 11. Therefore, even if the handle 5b is destroyed, the screw 1 is
You cannot turn one.

The handle case cover 6b is detachable by the screw 11, replaceable and recyclable. Further, as another embodiment, the screw 11 may be previously installed at a predetermined position of the handle case cover 6b by a welding means or the like. In that case, the nut will be tightened from the back side of the lock.

The handle case 6a is not an integrally cast product such as zinc caste, but is a laminate of metal plates punched into a desired shape. For example, the three front laminated metal plates 6c are tapped into the mounting holes (three places) for the screws 11 and are entirely quenched. The laminated metal plate 6c is fastened with a screwdriver by the screw 11.

Further, the metal plate 6a is formed by stacking a plurality of V-cut portions 6e provided at required positions on the outer peripheral portion and integrally welding them together. As shown in FIG. 1 and FIG. 3, the position regulating projection 6g, which protrudes rearward from the rear end portion of the rear metal plate 6d of the metal plate 6a, rotates when the lever 10a is locked / unlocked. It is for positioning the range.

The handle 5b and the inner cylinder 3a are also shown in FIG.
As shown in (a) and (b), the hexagon socket set screw 12 is detachably attached to the engaging portion on the back surface of the handle. Therefore, the handle 5b is also a recyclable part and is recycled.

The relationship between the inner cylinder 3a and the cylindrical inner case 2a slidably enclosing the inner cylinder 3a is shown in FIGS.
As shown in Fig. 3, the inner cylinder 3a with the lock 1 locked is shown.
Through holes 2b, 3 of the same diameter that penetrate radially and are evenly arranged at three locations in the circumferential direction with respect to the rotation center axis of
b is provided.

In each of the through holes 2b and 3b, there is fitted a spherical body 13 which is an engaging means for maintaining the engagement between the inner cylinder 3a and the inner case 2a. The spherical body 13 comes into contact with the inner wall of the hole of the handle case 6 and is blocked even when the spherical body 13 tries to come out in the radial direction. Further, even if the cam 14 comes out inward in the radial direction, the convex portion 14 of the cam 14
It abuts a and is blocked.

Further, the inner case 2a and the handle case 6a
As shown in FIG. 7, the engagement relationship with
The recesses 6f (three in the circumferential direction) are provided in a part of the through hole for the inner case 2a in a, and the through holes 2c are provided in the inner case 2a at the corresponding positions. The locking sphere 15 prevents the inner case 2a from rotating with respect to the handle case 6a in the locked body.

On the other hand, in the unlocked state (see FIG. 9),
The inner cylinder 3a is provided with a concave portion 3c for the spherical body 15, and the spherical body 15 is dropped into the concave portion 3c, so that the inner case 2a and the handle case 6a are disengaged from each other and the inner cylindrical body 3a is released. And the inner case 2a are integrated,
The handle case 6a can be simultaneously rotated around the axis without rattling.

The inner cylinder 3 has a guide projection 3d which engages with an elongated hole 2e provided along the front-rear direction on the outer peripheral surface of the inner case 2a, and slides in the front-rear direction by the elongated hole 2e. Sometimes guided. In addition, reference numeral 17 indicates a fixing metal fitting for preventing and locking the lock contained in the inner cylinder 3.

A torsion spring 16 which is an elastic member for urging the cam 14 to rotate in the locking direction is provided at the rear end of the inner cylinder 3.

A method for unlocking the lock 1 of the present invention thus configured will be described. First, insert a normal key into the key groove 5a shown in FIG. 2 and turn it clockwise. Then, as shown in FIGS. 8 to 9, the cam 14 is rotated by a predetermined angle (counterclockwise because it is viewed from the rear), and the spherical body 13 slides or rotates along the outer diameter shape of the cam 14.

When the sphere 13 reaches the recess 14b, the sphere 13 is pushed by the inner cylinder 3a biased forward by the coil spring 7a, and each of the spheres 13 falls into the recess 14b on the radially inner side.

When the spheres 13 are respectively dropped into the recesses 14b, the engagement relationship between the inner cylinder 3a and the inner case 2a is released, and the inner cylinder 3a is slid forward by the coil spring 7a so that the handle case cover 6b is released. Stick out from.

At the same time, the rotation of the cam 14 causes the torsion spring 16 to be twisted to generate a rotational force in the locking direction opposite to the arrow in FIG. As the inner cylinder 3a projects forward, as shown in FIGS. 9 and 10, the recess 3c moves forward, and the three spherical bodies 15 that engage the handle case 6a and the inner case 2a. The recess 3
It is dropped into c. As a result, the inner case 2a becomes rotatable with respect to the handle case 6a, and the inner cylinder 3a and the inner case 2a are integrally engaged.

Then, when the handle 5b is turned by hand, at the same time, the inner cylinder 3a and the inner case 2 which is engaged with the inner cylinder 3a by the sphere 15.
a and rotate. The lever 10a attached to the rear end of the inner case 2a rotates to unlock the door.

With the door open, the key may be rotated in the locking direction and pulled out from the key groove 5a. And
When the door is closed and the handle 5b is rotated in the opposite direction to return it to the original position and pushed backward against the biasing force of the coil spring 7a, the sphere 1
5 is pushed outward from the concave portion 3c in the radial direction and the through hole 2
Return to c and the recess 6f.

Further, the spherical body 13 is radially outward along the convex portion 14a of the cam 14 which is automatically rotated in the opposite direction (locking direction) by the urging force of the torsion spring 16 twisted by the unlocking operation. To the state shown in FIG. 6 by being accommodated in the through holes 2b and 3b.

Therefore, it is possible to automatically lock the door by simply removing the key from the key groove 5a with the door open and pushing the door into the device body and pushing the handle 5b. Therefore, it is possible to prevent the key from being forgotten while being inserted into the key groove 5a.

As a security measure for the lock 1, the front handle case 6c (see FIG. 4B) of the handle 5 and the handle case 6a is hardened, and therefore, is destroyed by a drill. Even if an attempt is made, since the hardened metal plates appear one after another in the quenched case, it takes a long time to destroy the plate until the end, and the unlocking of the lock 1 is avoided.

In addition, the handle case cover 6b
Since the handle 5b and the handle 5b can be freely attached and detached by the screw 11 which is a mounting member, they can be exchanged and reused if there is no problem in appearance, can be recycled, and can contribute to resource saving. is there.

The second embodiment of the lock 1 according to the present invention is shown in FIG.
As shown in FIGS. 4 to 15, as an anticrime measure against breakage of the drill, an inner cylinder 3e that is contained in the inner case 2a, is slidable in the front-rear direction, and can be slid forward by a key is made of, for example, steel. As a quenching treatment, for example, by carburizing and quenching to HV 700 or more, the tip handle case 6i at the tip of the handle case is hardened by a metal such as steel. There is.

Further, the laminated metal plates 6a behind the front handle case 6i are tapped into holes (two places) for the screws 11 formed in the laminated metal plates on the front side, and this handle case is formed. The entire 6a is, for example, welded by welding means on its side surface and integrally fixed.

In the lock 1 according to the second embodiment,
As shown in FIG. 16, as a means for engaging and disengaging the inner cylinder 3e and the inner case 2a, a pair of barbs 1 protruding and retracting vertically from the opening of the inner cylinder 3e by a key operation.
9 is provided.

As described above, as shown in FIGS. 17 to 18, since the hardened tip handle case 6i and the inner cylinder 3e are provided, it takes a considerable time to break them with a drill. It is something that can escape destruction. Further, the handle 5b made of zinc die cast or the like and the handle case cover 6b made of stainless steel or the like, which may be broken by a drill or melted by a burner or the like, are detachable and replaceable, so that repair is easy. .

[0041]

As described above, in the lock according to the present invention , the inner case is provided in the handle case which is the frame of the lock.
In the lock for unlocking by rotating the inner cylinder by moving the inner cylinder forward with a key, the inner cylinder is loosely inserted into a through hole that communicates with the inner case containing the inner cylinder, The cam, which has a sphere that is dropped inside the inner cylinder in the radial direction of the inner cylinder along the shape of the cam that is installed in the inner cylinder and is rotated by a key, and that releases the engagement between the inner cylinder and the inner case;
On the outer peripheral wall, move the sphere inward in the radial direction.
Recessed recesses are provided at one or more places in the circumferential direction,
The handle case is made up of multiple pieces of metal punched into the desired shape.
The metal plates are stacked and the front end to the rear end on the handle side
Quench the required number of metal plates to
Weld the V-cut parts provided at the required positions on the outer periphery together.
The handle case is attached to the handle case.
Handle attached to the mounting hole provided by cutting
Tighten the case cover to the screw head located on the front side of the lock.
There is no attachment groove, and the screw groove is engraved on the back side of the lock.
The end face of the rod-shaped part is provided with a groove for tightening which is a detachable operation part.
It is removably assembled and recyclable
Therefore, the engaging structure of the inner cylinder and the inner case is simple, the number of parts is small, the cost is reduced, and the number of assembling steps can be reduced, which is an excellent effect.

The inner cylinder is attached to the handle case which is the frame of the lock.
A key is provided to move the inner cylinder forward and
In the lock for unlocking by rotating the cylinder, the inner cylinder and the
It is loosely inserted into the through hole that communicates with the inner case that contains the inner cylinder.
In addition, it is installed in the inner cylinder and rotated by the key.
It is dropped inside the inner cylinder in the radial direction according to the shape of the cam.
And a sphere that releases the engagement between the inner cylinder and the inner case,
On the outer peripheral wall surface of the cam,
The recesses that drop to the side are provided at one or more locations in the circumferential direction.
And rotate the cam in the locking direction at the rear end of the inner cylinder.
An elastic member that biases the
When the inner cylinder moves forward, unlock the key
Pull out from the cylinder and push the inner cylinder backward to unlock
Therefore, the cam is locked by the biasing force of the twisted elastic member.
The sphere is rotated in the direction
Moving outward in the direction to engage the inner cylinder with the inner case.
It is locked and can be automatically locked with the key removed.
So, with the door open, remove the key from the keyway in advance,
It is convenient to push the door into the device body and push the handle to automatically lock the cam with the elastic member that urges it to rotate in the locking direction.In addition, you can forget to leave the key inserted in the keyway. It has an excellent effect of being prevented.

According to the lock of the present invention, an inner cylinder is provided in a handle case which is a frame of the lock, and the handle is moved to the front by a key to rotate the inner cylinder to unlock the handle. The case is made by stacking multiple metal plates and the required number of metal plates are quenched from the front end to the rear end on the handle side, so it is more destroyed than the cast handle case as a crime prevention measure. It has an excellent effect that it is strengthened and the manufacturing cost is reduced.

[0044]

On the outer peripheral wall surface of the cam, a concave portion for dropping the sphere radially inward is provided in the circumferential direction, so that the sphere can be engaged and disengaged in a well-balanced manner.

In the lock of the present invention, the mounting member used for assembling the handle case, which is the frame of the lock, and the handle case cover formed separately from the handle case has a detachable operating portion on the back side of the lock. Since it is provided and cannot be attached / detached from the front side, it can be turned only from the inside of the door, which is excellent in crime prevention measures.

[0047]

In the lock of the present invention, a sphere is provided between the inner cylinder and the inner case so as to integrally rotate the inner cylinder and the inner case around the axis in the unlocked state. Therefore, in the unlocked state, the handle case rotates around the shaft center without rattling at the same time.

[Brief description of drawings]

FIG. 1 is a side view of a lock according to the present invention.

FIG. 2 is a front view of the lock according to the present invention.

FIG. 3 is a rear view of the lock according to the present invention.

FIG. 4 is an explanatory view (a) showing the assembly of the handle case cover and the handle case in the lock of the present invention,
It is (b).

FIG. 5 is explanatory views (a) and (b) showing the assembly of the handle and the inner cylinder in the lock of the present invention.

FIG. 6 is a cross-sectional view showing a positional relationship between a cam and a sphere in a locked state in the lock of the present invention.

FIG. 7 is a cross-sectional view showing a locked state of the lock according to the present invention.

FIG. 8 is a cross-sectional view showing the positional relationship between the cam and the sphere in the unlocked state before the lock of the present invention.

FIG. 9 is a sectional view of the unlocked state of the lock according to the present invention.

FIG. 10 is a cross-sectional view showing an engaged state of the unlocked inner cylinder and the inner case before the lock of the present invention.

FIG. 11 is a front view of a lock according to a conventional example.

FIG. 12 is a side view of a lock according to the conventional example.

FIG. 13 is a perspective view showing an attached state of a lock according to a conventional example.

FIG. 14 is a side view of the lock according to the second embodiment of the present invention.

FIG. 15 is a rear view of the lock according to the second embodiment.

16 is a cross-sectional view taken along the line AA in FIG.

FIG. 17 is a front view (a) and a cross-sectional view (b) of the tip handle case in the lock of the second embodiment.

FIG. 18 is a front view (a), a side view (b), and a bottom view (c) of the inner cylinder in the lock of the second embodiment.

[Explanation of reference numerals] 1 lock, 2a inner case, 2b through hole, 2d lid, 3a, 3e inner cylinder, 3b through hole, 3c recessed portion, 4
Gripping part , 5a keyway, 5b handle, 6a handle case, 6b handle case cover, 6c laminated metal plate, 6d rear metal plate, 6e V cut part,
6f recessed part, 6g position regulation protrusion, 6i tip handle case, 7a coil spring, 10a lever, 11 screw, 11b end face, 12 set screw, 13 spherical body, 14
Cam, 14a convex portion, 14b concave portion, 15 spherical body, 1
6 torsion spring, 17 fixing metal fittings, 18 locking hole, 19
Barber.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI E05B 65/02 E05B 65/02 C (56) References JP-A-7-76961 (JP, A) JP-A-10-61268 ( JP, A) JP 55-116973 (JP, A) JP 5-92280 (JP, A) JP 4-319033 (JP, A) Actually opened 63-12571 (JP, U) Actually opened SHO 60-35863 (JP, U) Actual public SHO 41-6058 (JP, Y1) (58) Fields surveyed (Int.Cl. ⁷ , DB name) E05B 29/00 E05B 5/00 E05B 5/04 E05B 15 / 00 E05B 17/20 E05B 65/02

Claims (3)

(57) [Claims] 1. An inner cylinder is attached to a handle case which is a lock frame.
A lock is provided, which moves the inner cylinder forward by a key to rotate and unlock the inner cylinder, and is loosely inserted into a through hole that communicates with the inner cylinder and an inner case that encloses the inner cylinder. A sphere that is dropped inside the inner cylinder in the radial direction of the inner cylinder along the shape of a cam that is installed in the inner cylinder and is rotated by a key, and releases the engagement between the inner cylinder and the inner case.
And the cam has a radial direction on the outer peripheral wall surface of the sphere.
The recesses that drop inward are provided at one or more locations in the circumferential direction.
The handle case is made up of a plurality of gold stamped into a desired shape.
The metal plates are stacked and the front end to the rear end on the handle side
Quench the required number of metal plates to
Weld the V-cut parts provided at the required positions on the outer periphery together.
It is configured by fixing and is attached, and the tap case is attached to the handle case
The handle case cover attached to the hole is the front side of the lock.
There is no tightening groove on the screw head placed in the
On the end surface of the threaded rod part where the screw groove is engraved with
Assemble detachably with a screw that has a groove for tightening.
A lock characterized by being recyclable and recyclable . 2. An unlocked state between the inner cylinder and the inner case.
The inner cylinder and the inner case are integrally rotated around the axis.
The lock according to claim 1, further comprising a sphere that is regulated so that the lock is provided. 3. An inner cylinder is attached to a handle case which is a lock frame.
A key is provided to move the inner cylinder forward and
Penetration that communicates with the inner cylinder and the inner case that encloses the inner cylinder before the lock is unlocked by rotating the cylinder.
It is loosely inserted into the hole and is installed inside the inner cylinder,
The inner side of the inner cylinder in the radial direction according to the shape of the cam that rotates.
Sphere that is dropped onto the inner cylinder to release the engagement between the inner cylinder and the inner case
And the cam has a radial direction on the outer peripheral wall surface of the sphere.
The recesses that drop inward are provided at one or more locations in the circumferential direction.
The cam is rotated in the locking direction at the rear end of the inner cylinder.
Biasing to the elastic member is provided so as to, in the above unlocked state in which the inner cylinder moves forward by a key
When the key is removed from the inner cylinder and the inner cylinder is pushed backward,
The urging force of the elastic member twisted by the lock operation causes the force
The cam is rotated in the locking direction and the sphere follows the shape of the cam.
And move radially outward to engage the inner cylinder with the inner case.
It is locked together and can be automatically locked with the key removed.
A lock characterized by being Noh .