JPH07293056A - Door lock device - Google Patents

Abstract

PURPOSE:To make it possible to prevent a cylinder lock from coming off easily from a lock handle due to a spring trouble or vibrations or the like as in the case with prior art devices and manage only with one pull-off prevention means for a cylinder lock, and what is more, to provide a pull-off prevention function to a satisfactory extent. CONSTITUTION:In a door lock device which comprises a lock casing, and a lock handle 21 which is housed in the lock casing in such a fashion that the surface of a handle 23 may be flush with the lock casing and a cylinder lock 31 which is housed in the door handle in such a fashion that the surface of a lock may be substantially flush with the surface of the door handle, a window hole is formed at proper locations of an insertion shell 22 of the lock handle 21 where a ring-shaped or spiral engagement groove 32b is formed on the outer peripheral wall of an outer cylinder 32 of the cylinder lock 31. An engaged part 41 engaged with the engagement groove 32b is provided on an internal peripheral wall of a ring-shaped member 40 on the outer cylinder 32 of the cylinder lock while a cylinder lock plate spring-like pull-off prevention member in which projection ends 43 and 44 located at the window hole are fastened with a fastening bolt 45, is fitted in an engaged state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door locking device attached to a door of a vending machine, a locker or the like.

[0002]

2. Description of the Related Art Conventionally, one example of this type is disclosed in Japanese Patent Application Laid-Open No. 4-115070 proposed by the applicant.

The door locking device of this embodiment basically has a lock housing, and a lock handle that is stored in the lock housing such that the surface of the handle portion is the same as the surface of the lock housing. The lock handle comprises a cylinder-lock which is housed so that the surface of the lock is substantially the same as the surface of the lock handle.

In the door locking device having the above structure, however, the cylinder lock can be easily removed from the lock handle by operating the latch member provided on the lock handle. If the spring that constantly urges in the engaging direction fails, the cylinder lock can be easily removed from the lock handle.

Therefore, at present, there is a demand for the appearance of a door locking device having a structure in which the cylinder lock cannot be easily removed from the lock handle due to a spring failure, vibration, or the like.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional demands, the present invention prevents the cylinder lock from being easily removed from the lock handle due to spring failure, vibration, etc., and prevents the cylinder lock from being pulled out. The means is only one part, and has a sufficient removal prevention function. Further, when the cylinder lock is to be pulled out from the lock handle, the removal prevention member does not deform, and therefore the removal prevention member is protected. Is to obtain a door locking device that can be.

[0007]

The door locking device of the present invention comprises:
The lock housing 11, the lock handle 21 that is stored in the lock housing such that the surface of the handle portion 23 is the same as the surface of the lock housing, and the surface of the lock is substantially the surface of the lock handle. In a door locking device composed of a cylinder and a lock 31 that are housed in the same manner, a window hole 42 is formed at an appropriate position of the insertion barrel portion 22 of the lock handle, and an outer cylinder of the cylinder lock. An annular or spiral engagement groove 32b is formed on the outer peripheral wall of 32, and the outer cylinder 32 of this cylinder lock has an engaged portion 41 that engages with the engagement groove on the inner peripheral wall of the annular portion 40a. At the same time, the projecting end portions 43 and 44 located in the window hole are fixed by the tightening bolt
A plate spring-like removal prevention member 40 for a cylinder lock, which is screwed via 5, is fitted in a locked state.

Further, in the above structure, a fitting groove 49 is provided around the inner peripheral wall of the fitting hole 24 of the lock handle 21 near the entrance, and the fitting groove 49 is formed in the fitting groove to extend outwardly. A displaceable spring protection ring 48 is fitted.

[0009]

Next, the procedure for incorporating the cylinder lock into the lock handle will be described. First, the pull-out preventing member is incorporated into the lock handle.
In this case, the two protruding end portions of the removal preventing member are positioned in the window holes of the lock handle. Then, the tightening bolt is screwed into the through hole of the protruding end, and the C-shaped ring is fitted into the circumferential groove of the tightening bolt.

Next, the defense ring is inserted into the fitting hole of the lock handle in a contracted state and fitted into the fitting groove. When the defense ring is released, it is outwardly displaced by its own spring force. Next, the cap is forcibly fitted into the fitting hole.

Thereafter, the cylinder lock is put into the fitting hole of the lock handle, and the tightening bolt is tightened with a screwdriver. As a result, the annular portion of the pull-out preventing member is tightly engaged with the locking groove of the cylinder lock, so that the cylinder lock cannot be easily removed from the lock handle.

[0012]

The present invention will be described in detail below with reference to the embodiments shown in the drawings.

1 to 12 show an embodiment of the present invention. X is a door locking device which is attached to the door 10 of a vending machine, a rocker or the like so as to be substantially flush with the surface 10a thereof. This lock device X is basically a lock housing 11 fixedly attached to a door 10 and a lock housing 11 that is stored in the lock housing 11 such that the surface of the handle portion is the same as the surface of the lock housing. The handle 21, a cylinder-lock 31 that is stored in the lock handle such that the surface of the lock is substantially the same as the surface of the lock handle, and a cylinder lock extractor that prevents the cylinder lock 31 from coming out of the lock handle 21. It is composed of a combination with the removal preventing member 40.
Therefore, the basic members 11, 21, 31, 40 will be described in more detail.

First, the lock housing 11 will be described. Reference numeral 12 denotes a fitting attachment portion whose peripheral wall is formed in a track shape, 13 denotes a flange portion provided around the front end of the fitting attachment portion 12 in a protruding wall shape,
Reference numeral 14 denotes a cylindrical protrusion formed in a cylindrical shape at a position near the upper end of the rear end portion of the fitting attachment portion, and reference numeral 15 denotes an old keyhole-like fitting formed on the front surface portion of the fitting attachment portion and the flange portion. Fitting recess, 1
6 is a fitting hole for a lock handle which is provided through the fitting attachment portion 12 and the cylindrical protruding portion 14 so as to communicate with the fitting recess 15 at right angles, and 17 is a protruding end portion of the removal preventing member 40. The storage groove formed in the lock housing 11 located at 18 is a round or square housing engaging hole that engages with a locking latch to be described later formed below the peripheral wall surface of the cylindrical protruding portion 14. is there.

Next, the lock handle 21 will be described. Reference numeral 22 is a cylindrical insertion barrel portion that is loosely fitted in the fitting hole 16 of the fitting attachment portion 12 of the lock housing 11, and 23 is a handle portion that is fitted into the fitting recess 15. The grip portion 23 and the insertion barrel portion 22 are integrally formed in an L shape as a whole. 23a is a lock handle 21
It is a flange formed at a connecting portion between the handle portion 23 and the insertion barrel portion 22. 24 is a fitting hole for the cylinder-lock 31, 25
Is a cylindrical portion which is separated from the inner peripheral wall of the insertion barrel portion 22 at the rear portion of the insertion barrel portion 22 and is provided integrally with the insertion barrel portion, and 26 is fitted into this cylindrical portion 25. In addition, the rotating rod is made of metal or synthetic resin and has a square hole 26a at its tip. A locking latch 2 is provided at the rear end of the rotary rod 26.
The engagement protrusion 26b is formed so as to engage with the protrusion-shaped engaged portion 27a of No. 7. Further, a peripheral groove 26c that engages with the retaining engagement pin 9 is formed in a region from the rear end of the rotating rod 26.

Reference numeral 27 is a locking latch which is fitted to the rear end portion of the cylindrical portion 25 having a cutout portion and which is vertically moved by the rotation of the rotary rod 26. The locking latch 27 is provided in the direction intersecting with the rotating rod 26, and the lower end portion thereof can project from the latch engagement hole 22b that coincides with the housing engagement hole 18.

As shown in FIG. 6, 28 is properly incorporated in a guide space formed between the inner peripheral wall of the insertion barrel portion 22 of the lock handle 21 and the outer peripheral wall of the cylindrical portion 25, and the rear end portion is It is a sleeve-like lock member that protrudes from the cylindrical protrusion 14 of the lock housing 11.

The lower end of 29 is accommodated in the spring accommodating portion of the locking latch 27, while the upper end thereof is formed in the sleeve 28a of the sleeve-like lock member 28 in the axial direction notch 28b.
It is a compression spring for a latch that penetrates through and comes into pressure contact with the inner wall of the insertion barrel.

Reference numeral 30 denotes a rear end surface of the cylindrical portion 25 of the insertion barrel portion 22 and a flange-shaped stopper wall 28c of the sleeve-shaped lock member 28.
It is a spring member that is interposed between the lock handle 21 and the lock casing 21 and is always urged so that the lock handle 21 pops out of the lock housing 11 by a required amount when the cylinder lock 31 is unlocked by the key 36. The spring member 30 may be a leaf spring.

A male screw 28d is formed at the rear end of the sleeve-like lock member 28, and a long plate-like lock plate (not shown) is fixedly attached by using a fastener that is screwed with the male screw 28d. To be

Next, the cylinder lock 31 will be described.
The cylinder lock 31 incorporates a pin tumbler or the like (not shown). The cylinder-lock 31 is the lock handle 2 as described above.
It is stored in 1.

32 is an outer cylinder, and flat surfaces 32a are formed above and below the outer peripheral wall of the outer cylinder (reference to FIG. 1), and the arc-shaped outer peripheral wall portion excluding the flat surface 32a is
An annular or spiral engagement groove 32b, which is an annular groove in this embodiment, is formed. Reference numeral 33 denotes a shaft-shaped driving body (driving shaft) fitted in the square hole 26a of the rotating rod 26 described above. 36
Is an ordinary general key.

The driving body 33 is formed with a key notch 37 which is fitted in the insertion portion 36a of the key 36 in the axial direction as shown in FIG. In the present embodiment, the key notch 37 is formed in the axial direction up to the rear end of the driving body 33. Further, the driving body 33 projects from the outer cylinder 32 in a penetrating state.

Next, the removal preventing member 40 for a cylinder lock for preventing the cylinder lock 31 from coming off the lock handle 21 will be described. The removal preventing member 40 is formed in a leaf spring shape as shown in FIG.

Therefore, the annular portion 40 of the removal preventing member 40
The outer cylinder 32 of the cylinder lock 31 described above is provided on the inner peripheral wall of a.
The engaged portion 41 that engages with the locking groove 32b of the lock handle 21 is formed, and the two projecting end portions 43 and 44 located in the window hole 42 formed at an appropriate position of the insertion barrel portion 22 of the lock handle 21. Are screwed together by tightening bolts 45.

By the way, the projecting end portions 43 and 44 have
Through holes 46 for the tightening bolts 45 are respectively formed,
In the present embodiment, one of the projecting end portions 43 is a female screw that is screwed into the tightening bolt 45. Also, the tightening bolt 4
As shown in FIGS. 11 and 12, 5 has a peripheral groove 45b formed in a portion near the head portion 45a, and a C-shaped ring 47 having a spring property is fitted into the peripheral groove 45b.

The engaging groove 32b is formed in an annular shape and has a plurality of annular grooves in this embodiment, but the number of the annular groove may be one. However, in order to enhance the removal prevention function, it is preferable to use a plurality of wires as in this embodiment. Therefore, the engaged portion 41 corresponding to the locking groove 32b is also a plurality of annular protrusions in this embodiment.

Next, reference numeral 48 denotes a spring-like protection ring which is fitted into a fitting groove 49 provided around the inner peripheral wall of the entrance of the fitting hole 24 of the lock handle 21 and which can be expanded outward.
The protection ring 47 is for the removal prevention member, and when the cylinder lock 31 is to be pulled out from the lock handle 21, the front end surface of the removal prevention member 40 annular portion 40a contacts the inner end surface of the protection ring 48, and as a result, the cylinder The lock 31 cannot be removed from the lock handle 21.

Next, reference numeral 50 denotes a stainless steel or synthetic resin cap fitted in the fitting hole 24 of the lock handle 21 so as to be pressed against the inner peripheral wall of the entrance. The cap 50 is for filling the gap generated when the cylinder lock 31 is fitted into the lock handle 21, and is not always necessary depending on the design.

In the above structure, the relationship between the lock housing 11, the lock handle 21 and the cylinder-shaped 31 of the lock device X will be described first.

When the lock handle 21 is fitted in the fitting hole 16 of the lock housing 11 and the cylinder lock 31 stored in the fitting hole 24 of the lock handle 21 is in the locked state, the latch 27 is provided.
Is projected from the housing engaging hole 18 of the lock housing 11 by the spring force of the compression spring 29. In this case, the spring member 30 that biases the lock handle 21 is contracted.

Therefore, the key notch 3 of the cylinder lock 31
When the key 36 is inserted into 7 (key hole) and the driving body 33 is rotated to perform the unlocking operation, the rotating rod 26 is rotated by the driving body 33, and the latch 27 is the spring of the compression spring 29 as shown in FIG. It moves in the disengagement direction against the force, crosses the housing engagement hole 18 of the lock housing 11, and enters the latch engagement hole 22b. Then, the lock handle 21 is pushed outward by the spring force of the spring member 30, and as shown in FIG. In this case, the insertion body 22 of the lock handle 21
Also, the latch 27 attached to the same moves in the axial direction while sliding on the inner wall of the cylindrical protruding portion 14 of the lock housing.

Next, the lock handle 21 has a lock housing 1 as shown in FIG.
Even when the cylinder lock 31 is popped out of 1, the cylinder lock 31 is stored in the lock handle 21 as it is because the cylinder lock 31 is stoppered by the removal preventing member 40.

Therefore, when removing the cylinder lock 31 from the lock handle 21, the tightening bolt 45 is loosened by a driver (not shown). Then, the annular portion 40a of the removal preventing member 40 is outwardly displaced and displaced against the spring force of itself, and the inner diameter thereof is enlarged. As a result, the annular portion 4 of the removal preventing member 40
0a and the locking groove 32b of the cylinder lock 31 are released from the locked state. Then, the cylinder lock 31 is pulled out from the lock handle 21 using the key 36.

Next, a procedure for assembling the cylinder lock 31 into the lock handle 21 will be described.

First, the removal preventing member 40 is attached to the lock handle 21 as shown in FIG.
Install as shown in. The pull-out prevention member 40 is a lock handle 21.
Insert from the fitting hole 24 of. In this case, the two protruding end portions 43 and 44 of the removal preventing member 40 are positioned so as to protrude from the window hole 42 of the lock handle 21. And the protruding end portions 43, 4
4, the tip of the tightening bolt 45 is screwed into the through hole 46, and the C-shaped ring 47 is attached to the circumferential groove 4 of the tightening bolt 45.
Fit in 5b. In this case, the annular portion 4 of the removal prevention member 40
The inner diameter of 0a is wider than the outer diameter of the cylinder lock.

Next, the defense ring 48 is inserted into the fitting hole 24 of the lock handle 21 in a contracted state and fitted into the fitting groove 49 of the lock handle 21. When the defense ring 48 is released, it is expanded and displaced by its own spring force. Next, the cap 50 is forcibly fitted into the fitting hole 24.

After that, the cylinder lock 31 and the lock grip 21
In the fitting hole 24 and tighten the tightening bolt 45 with a screwdriver as shown in FIG. As a result, the annular portion 40a of the removal preventing member 40 has the locking groove 32b of the cylinder lock 31.
, So that the cylinder lock 31 cannot be easily removed from the lock handle 21.

When the cylinder handle 31 is to be pulled out by the lock handle 21, the annular portion 40a of the pull-out preventing member 40.
Since the front end surface of the contact member contacts the inner end surface of the protection ring 48, the contact force of the removal preventing member 40 is transmitted to the protection ring 48 in a dispersed manner.

[0040]

As is clear from the above description, the present invention has the following effects. (1) Since the removal preventing member is fitted in the locking groove in the locking groove of the outer cylinder of the cylinder lock, the spring is damaged as in the conventional case.
The cylinder lock will not easily come off from the lock handle due to vibration. (2) Since the pull-out preventing means for the cylinder lock is in the form of a leaf spring, only one part is required. Moreover, when the protruding end portion of the removal preventing means is screwed with the tightening bolt, the removal preventing function can be sufficiently exerted. (3) A fitting groove is provided around the inner peripheral wall of the lock grip fitting hole at a position near the entrance, and a spring-like protection ring for expansion preventing displacement is fitted into the fitting groove. In the case of the embodiment described above, when the cylinder lock is to be pulled out from the lock handle, the front end surface of the annular portion 40a of the removal preventing member 40 contacts the inner end surface of the protection ring 48, so The contact force is distributed and transmitted to the defense ring 48 as a whole. Therefore, the protruding end portions 43, 4 of the removal preventing member 40
Since only 4 does not concentrate the force, its protruding end 4
No deformation of 3,44. (4) Withdrawal prevention means can be easily attached to the cylinder lock. (5) In the case of the embodiment in which the cap 50 made of stainless steel or synthetic resin is fitted in the fitting hole 24 of the lock handle 21 so as to come into contact with the inner peripheral wall of the entrance of the fitting hole 24, a gap with the cylinder lock. Can be filled.

[Brief description of drawings]

 1 to 12 show an embodiment of the present invention.

FIG. 1 is an overall exploded perspective view.

FIG. 2 is an exploded perspective view of a main part.

FIG. 3 is an explanatory diagram showing a relationship between a lock handle and a lock housing.

FIG. 4 is a schematic sectional view showing an internal state (axial direction).

FIG. 5 is a schematic sectional view of a main part (radial direction).

FIG. 6 is a schematic cross-sectional explanatory view showing the relationship between each member such as a lock handle, a slip-out preventing member, and a cylinder lock.

FIG. 7 is a schematic explanatory view showing an assembling procedure (a state viewed from below when the removal preventing member is fitted).

FIG. 8 is a schematic explanatory view showing an assembling procedure (a state viewed from below when the tightening bolt is attached to the removal preventing member).

FIG. 9 is a schematic explanatory view showing an assembling procedure (the protection ring is fitted into the fitting hole of the lock handle).

FIG. 10 is a schematic explanatory view showing an assembling procedure (a state in which a cylinder lock is fitted into a cap and a lock bolt is further tightened).

FIG. 11 is a schematic perspective view of a main part.

FIG. 12 is a schematic explanatory view of a main part (relationship between a tightening bolt and a protruding end portion of the removal preventing member).

[Explanation of Codes] X ... Locking device, 10 ... Door, 11 ... Lock housing, 21 ... Lock handle, 22 ... Insert body part, 23 ... Handling part, 28 ... Sleeve-like locking member, 31 ... Cylinder lock, 32 ... Outer cylinder, 40 ... Removal prevention member, 40a ... Annular portion, 41 ... Locked portion, 42 ... Window hole, 43, 44 ... Projection end portion, 46 ... Through hole, 45 ... Tightening bolt, 48 ... Defense ring, 49 ... Fitting groove, 50 ... Cap.

Claims (3)

[Claims] 1. A lock housing 11 and a grip portion 23 on the lock housing.
The lock handle 21 is stored so that the surface of the lock is the same as the surface of the lock housing, and the cylinder-lock 31 is stored in the lock handle so that the surface of the lock is substantially the same as the surface of the lock handle. In the lock device for a door, a window hole 42 is formed at an appropriate portion of the insertion barrel portion 22 of the lock handle, and an annular or spiral locking groove 32b is formed on the outer peripheral wall of the outer cylinder 32 of the cylinder lock.
The cylinder 32 of the cylinder lock has an annular portion 4
0a has an engaged portion 41 that engages with the locking groove, and projecting end portions 43 and 44 located in the window hole are screwed through a tightening bolt 45. A locking device for a door, characterized in that the shape removal preventing member 40 is fitted in a locked state. 2. The fitting groove 49 according to claim 1, wherein a fitting groove 49 is provided around the inner peripheral wall of the fitting hole 24 of the lock handle 21 near the entrance, and the fitting groove 49 serves as a removal preventing member. A door locking device is characterized in that a spring-like defense ring 48 capable of outward expansion displacement is fitted. 3. The door locking device according to claim 1, wherein a cap 50 is fitted in the fitting hole 24 of the lock handle 21 so as to come into contact with the inner peripheral wall of the entrance of the fitting hole 24. .