JP2620200B2 - Door locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art A conventional example of this kind is disclosed in Japanese Patent Application Laid-Open No. Hei 4-115070 proposed by the present applicant.

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

[0004] In the door lock device having the above-described structure, there is an advantage that 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 always urges in the engaging direction fails, there is a disadvantage that the cylinder lock easily comes off from the lock handle.

[0005] Therefore, at present, there is a demand for the appearance of a door lock device having a structure in which a cylinder lock cannot be easily removed from a lock handle due to failure of a spring, vibration, or the like.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned demands, the present invention is intended to prevent a cylinder lock from easily coming off a lock handle due to a failure of a spring or vibration, and to prevent a cylinder lock from being pulled out. The means is a single part and has a sufficient function to prevent the removal of the cylinder lock. Further, when the cylinder lock is pulled out from the lock handle, the removal prevention member does not deform, and therefore the protection against the removal prevention member is prevented. Is to get a door locking device that can do it.

[0007]

According to the present invention, there is provided a door locking device comprising:
The lock housing 11, a lock handle 21 stored in the lock housing so that the surface of the handle portion 23 is the same as the surface of the lock housing, and the surface of the lock in this lock handle is substantially equal to the surface of the lock handle. In a door lock device comprising a cylinder and a lock 31 stored so as to be identical, a window hole 42 is formed at an appropriate position of the insertion body 22 of the lock handle, and an outer cylinder of the cylinder lock is provided. An annular or helical locking groove 32b is formed on the outer peripheral wall of the cylinder 32. The outer cylinder 32 of this cylinder lock has an engaged portion 41 that engages with the locking groove on the inner peripheral wall of the annular portion 40a. At the same time, the projecting ends 43 and 44 located in the window holes are
The plate spring-like removal prevention member 40 for the cylinder lock screwed via the screw 5 is fitted in the locked state.

In the above structure, a fitting groove 49 is provided on the inner peripheral wall of the lock handle 21 at a position near the entrance of the fitting hole 24, and the fitting groove has an outer expansion for a pull-out preventing member. A displaceable spring protection ring 48 is fitted.

[0009]

Next, the procedure for assembling 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 ends of the pull-out preventing member are positioned in the window of the lock handle. Then, the tightening bolt is screwed into the through hole at the protruding end, and the C-shaped ring is fitted into the circumferential groove of the tightening bolt.

Then, the guard ring is inserted into the fitting hole of the lock handle in a contracted state, and fitted into the fitting groove. When the guard ring is released, it expands and displaces due to its own spring force. Next, the cap is forcibly fitted into the fitting hole.

Thereafter, the cylinder lock is inserted 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 engaged with the locking groove of the cylinder lock in a close contact state, whereby the cylinder lock is not easily removed from the lock handle.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

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

First, the lock housing 11 will be described. 12 is a fitting portion having a peripheral wall formed in a track shape, 13 is a flange portion provided around the front end of the fitting portion 12 in a protruding wall shape,
Reference numeral 14 denotes a cylindrical projection formed in a cylindrical shape at a position closer to the upper end of the rear end of the fitting mounting portion. Reference numeral 15 denotes a fitting formed in the shape of an old keyhole on the front surface of the fitting mounting portion and the flange portion. Recess, 1
Reference numeral 6 denotes a lock fitting hole formed through the fitting mounting portion 12 and the cylindrical protrusion 14 so as to communicate with the fitting recess 15 at right angles. Reference numeral 17 denotes a protrusion end of the pull-out preventing member 40. A storage groove 18 formed in the lock housing 11 located is a round or square housing engagement hole formed below the peripheral wall surface of the cylindrical projection 14 and engaged with a locking latch described later. is there.

Next, the lock handle 21 will be described. Reference numeral 22 denotes a cylindrical insertion body that loosely fits into the fitting hole 16 of the fitting mounting portion 12 of the lock housing 11, and reference numeral 23 denotes a handle that fits into the fitting recess 15. The handle 23 and the insertion body 22 are integrally formed in an L-shape as a whole. 23a is a lock handle 21
Is a flange formed at a connecting portion between the handle portion 23 and the insertion trunk portion 22. 24 is a fitting hole for the cylinder-lock 31;
Is a cylindrical portion provided at a rear portion of the insertion trunk portion 22 except for a part below and separated from the inner peripheral wall of the insertion trunk portion 22 and provided integrally with the insertion trunk portion. It is a rotating rod made of metal or synthetic resin having a square hole 26a at the tip. A locking latch 2 is provided at the rear end of the rotating rod 26.
An engagement protrusion 26b that engages with the protrusion-shaped engaged portion 27a of No. 7 is formed. A peripheral groove 26c is formed at a position from the rear end of the rotating rod 26 to engage with the retaining pin 9 for retaining.

Reference numeral 27 denotes a locking latch which is fitted to a rear end portion of the cylindrical portion 25 having a notch, and which moves up and down by the rotation of the rotating rod 26. The locking latch 27 is provided in a direction crossing the rotating rod 26, and a lower end of the locking latch 27 can protrude from a latch engaging hole 22 b corresponding to the housing engaging hole 18.

As shown in FIG. 6, reference numeral 28 is appropriately incorporated into a guide space formed between the inner peripheral wall of the insertion barrel 22 of the lock 21 and the outer peripheral wall of the cylindrical portion 25, and the rear end thereof is provided. It is a sleeve-shaped lock member protruding from the cylindrical protruding portion 14 of the lock housing 11.

Numeral 29 denotes a lower end portion accommodated in the spring accommodating portion of the locking latch 27, while an upper end portion has an axial cutout 28b formed in the sleeve 28a of the sleeve-like lock member 28.
And is a compression spring for a latch that penetrates through the inside and presses against the inner wall of the insertion body.

Reference numeral 30 denotes a rear end face of the cylindrical portion 25 of the insertion body 22 and a flange-like stopper wall 28c of the sleeve-like lock member 28.
And a spring member which always urges the lock handle 21 so as to jump out of the lock housing 11 by a required amount when the cylinder-lock 31 is unlocked with 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 to the male screw 28d by use of a fixing tool. Can be

Next, the cylinder lock 31 will be described.
The cylinder lock 31 incorporates a pin tumbler (not shown) and the like. As described above, the cylinder lock 31 is
1 is stored.

Reference numeral 32 denotes an outer cylinder, and flat surfaces 32a are formed above and below the outer peripheral wall of the outer cylinder (see FIG. 1), and the arc-shaped outer peripheral wall excluding the flat surface 32a has
An annular or spiral locking groove 32b, in this embodiment, an annular groove is formed. Reference numeral 33 denotes a shaft-shaped driving body (driving shaft) that fits into the square hole 26a of the rotating rod 26 described above. 36
Is an ordinary common key.

As shown in FIG. 6, the driving body 33 is formed with a key notch 37 which fits into the insertion portion 36a of the key 36 in the axial direction. In this 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 protrudes from the outer cylinder 32 in a penetrating state.

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

The annular portion 40 of the pull-out preventing member 40
a on the inner peripheral wall of the outer cylinder 32 of the cylinder lock 31 described above.
The engaging portion 41 which engages with the locking groove 32b is formed, and two protruding end portions 43, 44 located in a window hole 42 formed at an appropriate position of the insertion trunk portion 22 of the lock handle 21. Is screwed through a tightening bolt 45.

By the way, the protruding ends 43 and 44 have
Through holes 46 for the fastening bolts 45 are respectively formed,
In this embodiment, one of the protruding ends 43 is a female screw that is screwed with the tightening bolt 45. The tightening bolt 4
As shown in FIGS. 11 and 12, a peripheral groove 45b is formed in a portion near the head 45a, and a spring type C-shaped ring 47 is fitted into the peripheral groove 45b.

In this embodiment, the locking groove 32b is formed in a ring shape and has a plurality of ring grooves. However, the number of the ring groove may be one. However, from the viewpoint of enhancing the removal prevention function, it is desirable to use a plurality of wires as in this embodiment. Therefore, the engaged portion 41 corresponding to the locking groove 32b is also formed of a plurality of annular projections in this embodiment.

Reference numeral 48 denotes a spring-like protection ring which is fitted in a fitting groove 49 provided on the inner peripheral wall of the lock handle 21 at a position near the entrance of the fitting hole 24 and which can be displaced outward.
This protection ring 47 is for a pull-out prevention member, and when the cylinder lock 31 is to be pulled out from the lock handle 21, the front end face of the pull-out prevention member 40 annular portion 40a hits the inner end face of the protection ring 48, and as a result, the cylinder The lock 31 does not come off the lock handle 21.

Reference numeral 50 denotes a cap made of stainless steel or synthetic resin which is fitted into the fitting hole so as to press against the inner peripheral wall at the entrance of the fitting hole 24 of the lock handle 21. Since the cap 50 is for filling the gap generated when the cylinder lock 31 is fitted into the lock handle 21, it is not always necessary depending on the design.

In the above configuration, first, the relationship among the lock housing 11, the lock handle 21, and the cylinder 31 of the lock device X will be described.

When the lock handle 21 is fitted into 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
Project 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 for urging the lock handle 21 is contracted.

Therefore, the key notch 3 of the cylinder lock 31
When the key 36 is inserted into the keyhole 7 (keyhole) and the driving body 33 is rotated to perform an unlocking operation, the driving body 33 rotates the rotating rod 26, and the latch 27 moves the It moves in the direction of disengagement 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 jumps out of the lock housing 11 by a required amount as shown in FIG. In this case, the insertion barrel 22 of the lock handle 21
The latch 27 mounted on the lock housing also slides on the inner wall of the cylindrical projection 14 of the lock housing and moves together in the axial direction.

Next, as shown in FIG. 3, the lock handle 21 is
Even when the cylinder lock 31 jumps out of the position 1, the cylinder lock 31 is stored in the lock handle 21 as it is because the cylinder lock 31 is stopped by the removal prevention 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 displaced outwardly and expanded against its own spring force, and its inner diameter is expanded. As a result, the annular portion 4 of the removal prevention member 40
The locked state between Oa and the locking groove 32b of the cylinder lock 31 is cancelled. Then, the cylinder lock 31 is pulled out from the lock handle 21 using the key 36.

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

First, the pull-out prevention member 40 is attached to the lock handle 21 as shown in FIG.
Assemble as shown by. The pull-out prevention member 40 is a lock handle 21.
From the fitting hole 24. 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 21. And the protruding ends 43, 4
4 and the C-shaped ring 47 is screwed into the circumferential groove 4 of the tightening bolt 45.
5b. In this case, the annular portion 4 of the removal prevention member 40
The inner diameter of Oa is wider than the outer diameter of the cylinder lock.

Next, the guard 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 protection 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.

Thereafter, the cylinder lock 31 is moved to the lock handle 21.
, And tighten the tightening bolt 45 with a screwdriver as shown in FIG. As a result, the annular portion 40a of the removal prevention member 40 is
As a result, the cylinder lock 31 does not easily come out of the lock handle 21.

When the lock handle 21 attempts to pull out the cylinder lock 31, the annular portion 40a
Is in contact with the inner end surface of the protection ring 48, so that the contact force of the removal prevention member 40 is transmitted to the protection ring 48 as a whole.

[0040]

As is clear from the above description, the present invention has the following effects. (1) Since the locking member is fitted in the locking groove of the outer cylinder of the cylinder lock in the locked state, the failure of the spring as in the related art can be prevented.
The cylinder lock does not easily come out of the lock handle due to vibration or the like. (2) Since the locking prevention means for the cylinder lock is a plate spring, only one component is required. Moreover, when the protruding end of the removal prevention means is screwed with a fastening bolt, the removal prevention function can be sufficiently exhibited. (3) A fitting groove is provided on the inner peripheral wall of the lock handle near the entrance of the fitting hole, and an externally displaceable spring-like protection ring for a pull-out preventing member is fitted into the fitting groove. In this embodiment, when the cylinder lock is to be pulled out from the lock handle, the front end face of the annular portion 40a of the pull-out preventing member 40 comes into contact with the inner end face of the protection ring 48. The contact force is transmitted to the defense ring 48 in a totally dispersed manner. Therefore, the protruding ends 43, 4
Since the force is not concentrated only at the projecting end 4
3, 44 do not deform. (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 into the fitting hole so as to be in contact with the inner peripheral wall of the entrance of the fitting hole 24 of the lock handle 21, the gap with the cylinder lock is provided. Can be filled.

[Brief description of the 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 (axial direction) showing an internal state.

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

FIG. 6 is a schematic cross-sectional explanatory view showing a relationship among members such as a lock handle, a removal prevention member, and a cylinder lock.

FIG. 7 is a schematic explanatory view showing the assembling procedure (as viewed from below when the pull-out preventing member is fitted).

FIG. 8 is a schematic explanatory view showing the assembling procedure (as viewed from below when a tightening bolt is attached to the pull-out preventing member).

FIG. 9 is a schematic explanatory view showing an assembling procedure (a protection ring is fitted into a fitting hole of a 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 tightening 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 (relation between a tightening bolt and a protruding end of a pull-out preventing member).

[Explanation of symbols]

 X: Locking device, 10: Door, 11: Lock housing, 21: Lock handle, 22: Insert body, 23: Handle, 28: Sleeve lock member, 31: Cylinder lock, 32: Outer cylinder, 40 ... Detachment prevention member, 40a: annular portion, 41: locked portion, 42: window hole, 43, 44: protruding end portion, 46: through hole, 45: tightening bolt, 48: defense ring, 49: fitting groove , 50 ... Cap.

Claims (3)

(57) [Claims] 1. A lock housing 11 and a handle 23 attached to 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 position of the insertion body 22 of the lock handle, and an annular or spiral locking groove 32b is formed in the outer peripheral wall of the outer cylinder 32 of the cylinder lock.
The outer cylinder 32 of the cylinder lock has an annular portion 4
0a has an engaged portion 41 which engages with the locking groove on the inner peripheral wall, and the protruding ends 43 and 44 located in the window holes are screw-fastened via tightening bolts 45. A lock device for a door, wherein the shape-preventing member 40 is fitted in a locked state. 2. A fitting groove 49 is provided around an inner peripheral wall of the lock handle 21 near the entrance of the fitting hole 24. A locking device for a door, wherein a springy protection ring 48 capable of being expanded and displaced outside is fitted. 3. The door locking device according to claim 1, wherein a cap is fitted into the fitting hole so as to contact an inner peripheral wall of an entrance of the fitting hole of the lock handle. .