JP2707406B2 - 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 Conventionally, this type of vending machine door locking device is described in Japanese Patent Application Laid-Open No. 4-115070.

[0003] This known door lock device has been previously proposed by the applicant, but basically, a lock housing and a surface of a handle portion of the lock housing are the same as the surface of the lock housing. And a cylinder lock stored in the lock handle such that the surface of the lock is substantially the same as the surface of the lock handle.

[0004] However, the door locking device having the above configuration has several problems to be solved. For example, when a cylinder lock is fitted into a lock, when a member (spring member) breaks down or a screw as a fixing means is loosened, the cylinder lock is easily released from the lock.

Therefore, regardless of the failure of a member (spring member) or the loosening of the screw as a fixing means, there is a demand for a structure in which the cylinder lock does not easily come out of the lock at least in the locked state. . In addition, there is also a demand for a configuration in which when the cylinder lock is fitted into the lock handle, both the cylinder lock and the lock handle are securely fixed.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned demands, and a first object of the present invention is to determine whether a member (spring member) has failed or a screw as a fixing means has been loosened. Another object of the present invention is to provide a structure in which a cylinder lock cannot be easily removed from a lock handle at least when the cylinder lock is in a locked state. The second purpose is to securely lock the cylinder lock to the lock handle,
The purpose is to prevent the lock from easily coming off.

[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 the same as the surface of the lock handle. And a cylinder lock 31 which is stored so as to be the same. An engagement portion 22c is formed on the inner peripheral wall of the insertion barrel 22 of the lock handle, while a drive protruding from the outer cylinder 32 of the cylinder lock 31 is formed. When the cylinder lock is in a locked state, a disk-shaped cylinder lock prevention means 60 that engages with the engaging portion 22c is fixedly inserted into the protruding end 33b of the body 33.

[0008]

When the cylinder lock is in the locked state, the arcuate portion of the disk of the cylinder lock prevention means projects from the flat surface of the outer cylinder of the cylinder lock and engages with the engagement portion of the inner peripheral wall of the lock handle.

Therefore, the cylinder lock does not come out of the lock as long as it is in the locked state regardless of whether the male screw of the fixing means on the lock side is loose.

[0010]

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

1 to 9 show an embodiment of the present invention. X is the surface 10 on the door 10 of a vending machine, locker, etc.
This is a door locking device that is attached so as to be substantially flush with a. 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. Handle 2
1, a cylinder lock 31 which is stored in the lock handle so that the surface of the lock is substantially the same as the surface of the lock handle, fixing means 50 for preventing the cylinder lock 31 from coming off the lock handle 21, and locking Regardless of whether the fixing means 50 is loose or not, as long as the cylinder lock 31 is in the locked state, the cylinder lock is combined with a cylinder lock prevention means 60 for preventing the cylinder lock from coming off from the lock handle. Therefore, the basic members 11, 21, 31, 50, and 60 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 near the rear end of the fitting mounting portion, and 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. Recesses,
Reference numeral 16 denotes a 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.
Is a storage groove formed at an appropriate portion of the inner wall of the fitting mounting portion where the fitting hole is formed, and 18 is engaged with a locking latch described below formed below the peripheral wall surface of the cylindrical projection 14. This is a round or square housing engagement hole.

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. 24 is the insertion body 22
Fitting hole of cylinder lock 31 formed in the front part
Reference numeral 5 denotes a cylindrical portion, as shown in FIG. 9, which is also separated from the inner peripheral wall of the insertion trunk portion 22 except for a part below the rear portion of the insertion trunk portion 22 and is provided integrally with the insertion trunk portion. Is a rotating rod made of metal or synthetic resin that fits into the cylindrical portion 25 and has a square hole 26a at the tip. An engagement protrusion 26b is formed at the rear end of the rotating rod 26 to engage with the protrusion-like engaged portion 27a of the locking latch. 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 rotation of a rotation 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.

The connecting portion between the handle portion 23 of the lock handle 21 and the insertion trunk portion 22 is formed in the shape of a flange 23a, and an appropriate portion of the outer wall of the insertion trunk portion 22 is connected to the flange 23a to form a projection. 22a are formed. This projection 2
2a and the flange 23a have the same surface. An inner peripheral wall near or near the protruding portion 22a of the insertion trunk portion 22 of the lock handle 21 is provided with a cylinder lock prevention means 6 described later.
An annular groove in which the left and right arc-shaped portions 61a of the 0 disk 61 can be engaged, a required notch, and an engaging portion 2 such as a stepped space.
2c is formed.

As shown in FIG. 5, reference numeral 40 denotes a rectangular through hole formed at the tip of the projection 22a or the insertion trunk 22. Left and right insertion spaces 41, 41 are provided inside the through hole 40, and a plate-like support portion 42 is connected to the protrusion 22 a or the insertion trunk 22. A female screw 43 is formed at the center of the support part 42.

As shown in FIG. 9, reference numeral 28 is incorporated in a guide space formed between the inner peripheral wall of the insertion barrel 22 of the lock handle 21 and the outer peripheral wall of the cylindrical portion 25, and the rear end thereof is a lock case. It is a sleeve-shaped lock member projecting from the cylindrical projection 14 of the body handle 11.

Numeral 29 denotes a lower end portion accommodated in the spring accommodating portion of the locking latch 27, while an upper end portion includes an axial cutout portion 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 is always urged so that when the cylinder lock 31 is unlocked with a key, the lock handle 21 projects out of the lock housing 11 by a required amount. This spring member 3
0 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 member screwed thereto.

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

As shown in FIG. 2, a flat surface 32a is formed above and below an outer peripheral wall of the outer cylinder, and an arc-shaped outer peripheral wall excluding the flat surface 32a has A plurality of threaded locking grooves 32b are formed in the circumferential direction at a required interval. Reference numeral 33 denotes a shaft-shaped driving body that fits into the square hole 26a of the rotating rod 26 described above. 36 is an ordinary common lock.

As shown in FIGS. 6 and 7, the driving body 33 is formed with a key notch 37 that fits into the insertion portion 36a of the key 36 in the axial direction. In this embodiment, the key notch 37 is formed up to the rear end of the driving body 33. Further, as shown in FIG.
The drive fitting portion 33a has a flat shaft 38 on both sides and a stopper groove 39 on an arc-shaped outer wall surface other than the flat surface 38 at the rear end 33b.
Are formed at required intervals.

Next, the fixing means 50 for preventing the cylinder lock 31 from coming off the lock handle 21 will be described. As shown in FIG. 1 and FIG.
1 is fitted into the through hole 40 of the projection 22a and the cylinder lock 3 is inserted into the insertion end of the opposing side walls 51a, 51a.
All have an arcuate pawl portion 52 for engagement with the first locking groove 32b
A U-shaped locking piece 51 as a body, and a connecting wall 51 opposed to a support portion 42 formed on the lock 21 of the locking piece 51.
b is inserted into an insertion hole 53 having a female thread formed in
And a male screw 54 screwed into the female screw 43 of the support part 42. When the locking piece 51 is loosely fitted into the through hole 40 of the projection 22 a of the lock handle 21, the arc-shaped claw 52 passes through the left and right insertion spaces 41, 41 of the support portion 42 and engages with one of the cylinder locks 31. It engages with the stop groove 32b.

In the above-described embodiment, the support portion 42 having the female thread 43 is formed in the through hole 40 of the projection 22a of the lock handle 21, but the support portion 42 is not always necessary. A female screw into which the male screw 54 is directly screwed may be formed in the outer cylinder 32 of the lock 31.

Finally, the cylinder lock prevention means 60 will be described. This cylinder lock prevention means 60 is provided as long as the cylinder lock 31 is in the locked state as described above.
The cylinder lock is prevented from coming off the lock handle 21.

Thus, the cylinder lock prevention means 60
Comprises a disk 61 in this embodiment and a stopper washer 62 for fixing the disk 61 at a predetermined position. Disk 61
The left and right arc-shaped portions 61a, 61a with reference to FIG.
And a straight portion 61 in which the upper and lower arc-shaped portions are cut, respectively.
b, 61b. The radius of the disk 61 depends on the flat surface 32 a of the cylinder lock 31 and the locking groove 32.
The radius is substantially the same as the radius of the outer cylinder 32 having b. 63 is a square hole-shaped center hole formed in the disk. The disk 61 is inserted into the protruding end 33 b of the driving body 33 of the cylinder lock 31 through the center hole 63. The stopper washer 62 is inserted into the protruding end 33b, and has a plurality of notch claws 64a in the washer center hole which engage with the stopper grooves 39 of the protruding end 33b. In the present embodiment, the disk 61 and the stopper washer 62 are separate bodies, but they may be integrally formed.

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

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 unlocking operation is performed by rotating the driving body 33, the rotating rod 26 is rotated by the driving body 33, and the latch 27 is moved by the compression spring 29 as shown in FIG. 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 21 is pushed outward by the spring force of the spring member 30 and jumps out of the lock 21 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.

By the way, even when the lock handle 21 protrudes from the lock housing 11 as described above, since the lock 31 is fixed to the lock handle 21 by the fixing means 50, the lock handle 21 is directly transferred to the cylinder. Is stored.

Therefore, when removing the cylinder lock 31 from the lock handle 21, the male screw 54 is loosened. Then, the engagement between the locking piece 51 and the locking groove 32b of the outer cylinder 32 is released, and the cylinder lock 31 can be pulled out from the lock 21 as shown in FIG.

Next, the relationship between the lock handle 21 and the cylinder lock prevention means 60 will be described. When the cylinder lock 31 is in the locked state, the disk 6 rotated in the locking direction as shown in FIG.
The first arc-shaped portions 61a, 61a are flat surfaces 3 of the outer cylinder 32.
2a and 32a, respectively, and engages with the engaging portion 22c of the lock handle 21.

Therefore, regardless of whether the male screw 54 of the fixing means 50 is loose, the cylinder lock 31 does not fall out of the lock handle 21 as long as the cylinder lock 31 is in the locked state. That is, when the cylinder lock 31 is unlocked by the operation of the key 36, the linear portion 61b of the disk 61 coincides with the flat surface 32a of the outer cylinder 32, and at the same time, the arc-shaped portion 61a of the disk 61.
Is released from the engaging portion 22c of the lock handle 21, so that the cylinder lock 31 together with the key 36 can be pulled out from the lock handle 21.

[0035]

As is clear from the above description, the present invention has the following effects. (1) Regardless of failure of a member (spring member) or loosening of a screw as a fixing means, the cylinder lock is not easily released from the lock at least in the locked state. Therefore, the anti-vibration property (the effect of preventing the cylinder lock from rattling and sliding when the screw is loosened) and the anti-crime property are enhanced. (2) A claw part in which the locking means for preventing the cylinder lock from coming off is loosely fitted into the through hole of the protrusion of the lock handle, and engages with the locking groove of the cylinder lock at the insertion end of the opposite side wall. And an insertion hole formed in a connecting wall of the engagement piece, and screwed into an internal thread of the support portion or an external thread of the outer cylinder of the cylinder lock. In the case of using the male screw 54, the cylinder lock 31 is securely locked to the lock handle 21 and does not easily come off the lock handle.

[Brief description of the drawings]

 1 to 9 show an embodiment of the present invention.

FIG. 1 is an overall exploded perspective view.

FIG. 2 is a perspective view showing a relationship between a lock handle and a cylinder lock.

FIG. 3 is an explanatory view showing a fixing relationship between a lock handle and a cylinder lock.

FIG. 4 is an explanatory view of a cylinder lock and cylinder lock removal prevention means.

FIG. 5 is a perspective view showing a relationship between a cylinder lock and a lock housing.

FIG. 6 is a schematic sectional explanatory view of a main part (axial direction).

FIG. 7 is a schematic cross-sectional explanatory view (radial direction) of a main part.

FIG. 8 is an explanatory diagram showing a relationship between a rotating rod and a locking latch.

FIG. 9 is a schematic sectional explanatory view of the whole;

[Description of Signs] X: Locking device, 10: Door, 11: Lock housing,
21: lock handle, 22: insertion trunk, 22c: engagement part, 23
... handle part, 25 ... cylindrical part, 26 ... rotating rod, 26b ... engaging projection, 27 ... latching, 30 ... spring member, 31 ... cylinder lock, 32 ... outer cylinder, 32a ... flat surface, 32b ... locking groove 33, a driving body, 33a, a driving fitting portion, 33b, a protruding end portion, 50, a fixing means, 51, a locking piece, 52, a claw portion, 5
4 ... male screw, 60 ... cylinder lock removal prevention means, 61 ...
Disk, 62 ... stopper washer.

Claims (3)

(57) [Claims] 1. A lock housing 11 and a handle 23 attached to the lock housing.
And a cylinder lock 31 stored so that the surface of the lock is substantially the same as the surface of the lock handle. An engaging portion 22 is provided on the inner peripheral wall of the insertion trunk portion 22 of the lock handle.
c, while a protruding end 33b of a driving body 33 protruding from the outer cylinder 32 of the cylinder lock 31 has a disc-shaped cylinder that engages with the engaging portion 22c when the cylinder lock is in a locked state. A lock device for a door, wherein the lock prevention means 60 is fixedly inserted. 2. The cylinder lock prevention means 60 according to claim 1, wherein said left and right arc-shaped portions 61a, 61a are opposed to each other.
And a straight portion 61 in which the upper and lower arc-shaped portions are cut, respectively.
b, 61b, and a protruding end 3 in the center hole.
3b a plurality of notches 6 to be engaged with the stopper grooves 39
A lock device for a door, comprising a stopper washer 62 having a lock 4. 3. The lock handle 21 according to claim 1, wherein the lock handle 21 is provided with a fixing means 50 for preventing the cylinder lock from coming off, and the fixing means is loosely fitted into the through hole of the protrusion of the lock handle, and ,
A generally U-shaped locking piece 51 having a claw portion 52 that engages with the locking groove 32b of the cylinder lock at the insertion end of the opposing side walls 51a, 51a, and a connecting wall 51b of the locking piece.
And a male screw 54 that passes through an insertion hole 53 formed in the lock handle 21 and is screwed to a support portion 42 formed in the lock handle 21.