JP2646050B2 - 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 In recent years, there has been an incident in which a locking device for a door of a vending machine has been destroyed by a thief. That's because vending machines always have a lot of money in them.

As a method of breaking a lock device of a door by a thief, for example, a method of inserting a drill into a keyhole (a cutout portion for a key) of a cylinder lock constituting the lock device and raising a method of breaking a latch mechanism is proposed. Can be.

Therefore, at present, there is a demand for a specific countermeasure against a thief using such a technique.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to provide a door locking device in which a thief cannot easily break a latch mechanism. Another problem is that the lock handle constituting the lock device does not protrude from the lock housing attached to the door slightly flush. Another advantage is that the lock handle can smoothly jump out of the lock housing during the unlocking operation of the lock device. It is a further object of the invention that the cylinder lock can be easily removed from the lock handle when the lock handle is in a protruding state.

[0006]

According to the present invention, there is provided a door locking device comprising:
A lock housing 11 having a fitting recess 15; a sleeve-shaped lock member 28 which is provided in the lock housing and has a rear end 28d protruding from a rear portion of the lock housing; and a part of the lock member 28 A lock handle 21 having an insertion body portion 22 into which a 28a can be inserted and a handle portion 23 fitted into the fitting recess so as to be substantially the same as the surface of the lock housing; A spring member 30 that constantly urges the lock handle in the protruding direction, a cylinder lock 31 that is fitted into the fitting hole 24 of the lock handle so that the surface does not substantially protrude, and a driving body 33 of the cylinder lock. While the drive shaft 33a is fitted,
A drive rod 33 which is provided on the lock handle so as to be engaged with a latch 27 provided on the lock handle; and a drive body 33 protruding from a rear end surface of the outer cylinder 32 of the cylinder lock, And a locking piece 39 for a drill having a blocking part 39b facing the insertion part 36a of the key 36 inserted into the cylinder lock is fitted and fitted in the key notch 37 formed in the key lock. I do.

In the above construction, a latch mounting portion 25 is provided in the insertion trunk portion 22 of the lock handle 21 so as to be separated from the inner peripheral wall of the insertion trunk portion and provided integrally with the insertion trunk portion. ,
Further, the cylinder lock 31 is detachably engaged and disengaged by a rotation operation of a latch member 40 pivotally supported by the lock handle 21.

The main part of the structure of the present invention is fitted into a key notch 37B formed in the driver, for example, into a driver 33B protruding from the rear end face of the outer cylinder 32B of the cylinder lock. In addition, by fixedly providing the obstruction pin 39B for the drill that intersects with the insertion portion 36a of the key 36 inserted into the cylinder lock, the driving body 33C protruding from the rear end surface of the outer cylinder 32 of the cylinder lock has: By providing a drill obstacle 39C buried in a key notch 37C formed in the driving body and facing the insertion portion 36a of the key 36 inserted in the cylinder lock, the rotation rod D
By inserting the drill obstacle plate 39D into the fitting hole of
The same object as the specific invention can be achieved.

[0009]

Assume that a thief tries to steal money from a vending machine and inserts a drill into a key notch (keyhole) of a driving mechanism of a cylinder lock of a lock device.

However, even if the notch for the key is cut with a drill, the tip of the drill always hits the obstacle for drilling in front of or inside the rotating rod for the vertical movement latch.
Therefore, a thief cannot easily break the latch mechanism.

When the lock device is unlocked, first, the lock handle is ejected from the lock housing by a required amount by using the spring force of the spring member. Next, while operating the latch member of the lock handle with a finger, the cylinder lock is pulled out from the lock handle via a key.

[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 10 show a first embodiment of the present invention. X is a door lock device which is attached to a door 10 such as a vending machine or a locker so as to be substantially flush with the surface 10a of the door. 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. The lock comprises a combination of a handle 21 and 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. Therefore, these basic members 11, 2
1 and 31 will be described in more detail.

First, in the lock housing 11, reference numeral 12 denotes a fitting mounting portion having a peripheral wall formed in a track shape, reference numeral 13 denotes a flange portion provided around the front end of the mounting portion 12 in a protruding wall shape, and reference numeral 14 denotes a fitting. A cylindrical projection 15 is formed in a cylindrical shape at a position near the rear end of the fitting mounting portion, and a fitting recess 15 is formed in the front of the fitting mounting portion and the flange portion. , 16 are fitting holes formed through the fitting mounting portion 12 and the cylindrical projecting portion 14 so as to communicate with the fitting recess 15 at right angles, and 17 is the fitting hole of the fitting mounting portion. An accommodation groove 18 for accommodating a latch member, which will be described later, formed at an appropriate portion of the inner wall, is an engagement hole which is formed below the peripheral wall surface of the cylindrical projection 14 and engages with an up / down movement latch, which will be described later.

Next, in the lock handle 21, reference numeral 22 denotes the lock housing 1.
A cylindrical insertion trunk portion 23 that fits loosely into the fitting hole 16 of the first fitting attachment portion 12, a handle portion 23 that fits into the fitting recess 15, and the handle portion 23 and the insertion trunk portion 22 are formed as a whole. As an L-shape.

Reference numeral 24 denotes a fitting hole of a cylinder lock 31 formed at a front portion inside the insertion body portion 22, and reference numeral 25 denotes a rear portion inside the insertion body portion 22 except for a part of a lower portion as shown in FIG. A latch mounting portion 26, which is separated from the inner peripheral wall of the insertion trunk portion 22 and is provided integrally with the insertion trunk portion, fits into a fitting hole formed in the latch mounting portion 25 in the axial direction thereof and has a square shape. A cylindrical rotating rod 27 having a fitting hole is a vertically movable latch which is fitted to the rear end of the latch mounting portion 25 and which moves up and down by the rotation of the rotating rod 26.

Reference numeral 28 denotes, for example, the insertion barrel 22 of the lock handle 21.
A sleeve-shaped lock member which is spatially formed between the inner peripheral wall of the lock mounting portion 25 and the outer peripheral wall of the latch mounting portion 25 and has a rear end protruding from the cylindrical protruding portion 14 of the lock housing 11 described above. is there.

A lower end 29 is housed in the spring housing of the vertical movement latch 27, while the other end is formed in an axial cutout 28b formed in the sleeve 28a of the sleeve-like lock member 28.
Is a compression spring for a vertical movement latch that comes into pressure contact with the inner wall of the insertion trunk portion.

Reference numeral 30 is interposed between the rear end face of the latch mounting portion 25 of the insertion body 22 and the flange-shaped stopper wall 28c of the sleeve-shaped locking member 28, and unlocks the cylinder lock 31 with a key described later. This is a spring member that urges the lock handle 21 so as to protrude from the lock housing 11 by a required amount.

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 thereto by using a fixing member screwed with the male screw 28d.

Next, in a cylinder lock 31 incorporating a pin tumbler or the like (not shown), reference numeral 32 denotes an outer cylinder having a male screw 32a in a part of its outer periphery, and reference numeral 33 denotes a rear end portion which fits into the above-described rotating rod 26. A driving body 34 having a square-shaped driving shaft 33a is fitted into the outer cylinder 32 and has a tapered cutout surface 34.
A ring-shaped spacer 35 having an a is an engagement ring that is screwed with the male screw 32a of the outer cylinder 32 and engages with a latch member described later. Incidentally, 36 is an ordinary general key.

Thus, the driving body 33 of the cylinder lock 31
As shown in FIGS. 4 and 5, a key cutout portion 37 is formed in the axial direction so as to fit with the insertion portion 36a of the key 36.
In this embodiment, the cutout portion 37 is cut out in the radial direction and is formed up to the rear end of the drive shaft 33a. As shown in FIG. 5, a peripheral groove 38 is formed at the rear end of the driving fitting portion 33b of the driving body 33 which protrudes from the outer cylindrical body 32 in a penetrating state.

Reference numeral 39 denotes a drive fitting portion 33b of the driving body 33.
The insertion portion 36a of the key 36 inserted into the cylinder lock 31 through the key notch 37
And the obstruction piece for drill opposing to. In this embodiment, the obstruction piece 39 for a drill plays a role of a so-called retainer (extraction prevention member) so that the driving body 33 does not come off from the outer cylinder 32 of the cylinder lock 31.

As shown in FIGS. 7 and 8, the drill obstacle 39 is fitted into the semicircular engaging portion 39a and the key notch 37 from inside the center of the engaging portion 39a. The obstacle 39b is formed in a curved shape so that the leading end of the entering drill can be gathered at the center. The obstacle 39 for the drill is made of a cemented carbide material or hardened to such a hardness that it cannot be easily cut by a drill.

Reference numeral 40 denotes a latch member which is pivotally supported by the lock handle 21 and engages with and disengages from the engagement ring 35 of the cylinder lock 31. The latch member 40 is provided in a notch 22a formed at the front of the insertion barrel 22 of the lock. The latch member 40 is inserted through the pivot pin 41 into the insertion barrel 2 of the lock handle.
2 facing bearing portions 22b, 2
2b, and is always urged in one direction by a spring member 42 wound around a pivot pin 41. The latch member 40 is formed in a block shape as a whole, and a protruding portion 40a with which a fingernail is engaged is formed at an outer rear end portion thereof, while a lock handle insertion body portion 22 is formed at an inner front end portion. An engagement claw portion 40b that projects in a tapered shape from the inner peripheral wall is formed.

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.

As shown in FIG. 4, the lock 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 21 is in the locked state. , The vertical movement latch 27 is engaged with the engagement 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 cylindrical shape 31
When the key 36 is inserted into the keyhole 7 and the unlocking operation is performed by rotating the driving body 33, the rotating rod 26 is rotated by the driving shaft 33 a of the driving body 33, and the vertical movement latch 27 is moved by the spring force of the compression spring 29. It moves in the direction of disengagement in opposition, and comes off from the engagement hole 18 of the lock housing 11. 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 lock handle 2
The vertical movement latch 27 attached to the first insertion body 22 also moves in the axial direction together while sliding on the inner wall of the cylindrical projection 14 of the lock housing.

Next, as shown in FIG. 3, the lock handle 21 is
In the case where the lock 31 is protruded from the cylinder lock 31, the lock claw 40 b of the latch member 40 of the lock 21 is engaged with the engagement ring 35 of the cylinder lock 31. Is stored in However, the latch member 40 is exposed as shown in FIG.

When the cylinder lock 31 is to be removed from the lock handle 21, the latch member 40 is pushed and rotated by, for example, the thumb, and the engaging claw 40b of the latch member 40 is disengaged from the engagement ring 35 of the cylinder lock 31. Release the engagement. Then, when the key 36 is pulled as it is, the cylinder lock 31 is pulled out from the lock handle 21 as shown in FIG. On the other hand, when fitting the extracted cylinder lock 31 to the lock handle 21, the cylinder lock 31 is
When the engagement ring 35 is pushed into the fitting hole 24, the engagement ring 35 comes into sliding contact with the tapered surface of the engagement claw portion 40b of the latch member 40, so that the latch member 40 is rotated by the spring force of the spring member 42 and rotated.
The cylinder lock 31 is called "snap" and the lock handle 21
Is stored in

Next, a case where a thief tries to break the locking mechanism of the lock device X using a drill will be described.

As shown in FIG. 10, a burglar tries to steal money from a vending machine, and the cylinder lock 31 of the lock device X is used.
It is assumed that the drill D is inserted into the key cutout (keyhole) 37 of the driver 33 of FIG.

Thus, even if the key notch 37 is cut with the drill D, the tip of the drill D must be in front of the pivoting rod 26 for the vertical swing latch, and the obstacle 3 of the drill obstacle piece 39 must be formed.
9b hits. Therefore, a thief cannot easily break the latch mechanism.

[0034]

Next, another embodiment of the present invention will be described. In the description of these embodiments, the same parts as those of the above-described embodiments are denoted by the same or similar reference numerals, and overlapping description will be omitted.

The second embodiment shown in FIGS. 11 to 13 is different from the first embodiment mainly in that the driving body 33B
It is. That is, a mounting groove 51 intersecting with the key notch (key hole) 37B is formed in the drive fitting portion 50 protruding from the outer cylinder 32B of the driving body 33B, and the mounting groove 51 is also used as a retainer which is hardened or the like. Obstacle pin for drill 39
B is fixedly provided so as to intersect with the key notch.

With this configuration, the same operation and effect as those of the first embodiment can be obtained.

In the embodiment shown in FIGS. 14 to 16, the main difference from the first embodiment is the driving body 33C. That is, the drill obstacle 39 is inserted into the key notch 37C (the tip of the key notch) of the drive shaft 52 of the driving body 33C.
C is mounted in a buried state, and an elastic retainer 53 of an ohm-shaped shape that can be expanded and displaced as shown in FIG.

With this configuration, the same operation and effect as those of the first embodiment can be obtained.

The fourth embodiment shown in FIGS. 17 to 19 is mainly different from the first embodiment in that a fitting hole for a driving body 33D of a rotating rod 26D for operating a vertical latch 27D is provided. That is, a drill obstacle plate 39D that has been quenched or the like is fitted into 54. This embodiment may be combined with any of the first to third embodiments described above.

In this case, the same operation and effect as those of the first embodiment can be obtained.

[0041]

As is clear from the above description, the present invention has the following effects.

(1) The thief is drilled with a key notch (key hole)
, The tip of the drill D always hits the drill obstacle (including the plate and the pin) in front of the latch mechanism. Therefore, the thief cannot easily break the latch mechanism.

(2) The lock handle 21 constituting the lock device is the door 1
It does not protrude from the lock housing 11 which is mounted slightly flush with the lock housing 11. Also, it is housed in the lock housing 11 and has a rear end 28d.
Is a sleeve-shaped locking member 2 protruding from the rear of the lock housing.
Since a part 28a of the lock member 28 is inserted into the insertion body 22 of the lock handle 21, the lock handle smoothly pops out of the lock housing when the locking device is unlocked. Also, the handle portion 23 of the lock handle 21 is the fitting recess 1 of the lock housing.
5 is fitted so as to be substantially the same as the surface of the lock housing, so that even if a thief tries to pull out the lock handle from the lock housing with seven tools such as a screwdriver, it is not so easy. Further, when the key is rotated, the required amount of the lock handle automatically pops out of the lock housing, so that the door can be easily unlocked. Then, when taking out the cylinder lock from the lock handle protruding from the lock housing, pulling the key while rotating the latch member with a finger, the cylinder lock easily comes out of the lock handle.

(3) Even if the thief breaks the cylinder lock with a drill, the latch mechanism and other parts can be used as they are. Therefore, only the broken cylinder lock of each standard need be replaced.

[Brief description of the drawings]

FIG. 1

FIG. 10 is an explanatory view showing a first embodiment of the present invention.
1 is an overall exploded perspective view, FIG. 2 is a perspective view showing a relationship between a lock handle and a cylinder lock, and FIG. 3 is a perspective view showing a relationship between a cylinder lock and a lock housing. FIG. 7 and FIG. 8 are explanatory views of a main part (drill obstruction piece).

FIG. 11

FIG. 13 is an explanatory view showing a second embodiment of the present invention.

FIG. 14

FIG. 16 is an explanatory view showing a third embodiment of the present invention.

FIG. 17

FIG. 19 is an explanatory view showing a fourth embodiment of the present invention.

[Explanation of symbols]

X: locking device, 10: door, 11: lock housing, 21: lock handle,
26: rotating body, 30: spring member, 31: cylinder lock,
32, 32B ... outer cylinder, 33, 33B, 33C, 33D ...
Driving bodies, 33a, 52 ... drive shafts, 33b, 50 ... drive fitting parts, 36 ... keys, 37, 37B, 37C ... key notches,
38, 38C: circumferential groove, 39, 39C: drill obstacle,
39B: Obstacle pin for drill, 39D: Obstacle plate for drill,
40 ... Latch member, 53 ... Elastic retainer.

Claims (5)

(57) [Claims] 1. A lock housing 11 having a fitting recess 15, a sleeve-like lock member 28 which is provided in the lock housing and has a rear end portion 28d protruding from a rear portion of the lock housing. A lock handle 21 having an insertion body 22 into which a part 28a of the member 28 can be inserted and a handle 23 fitted into the fitting recess so as to be substantially flush with the surface of the lock housing; A spring member 30 provided in the body 11 and constantly biasing the lock handle in the protruding direction, and a cylinder lock 31 fitted into the fitting hole 24 of the lock handle so that the surface does not substantially protrude.
And a rotating rod 26 provided inside the lock so that the drive shaft 33a of the driving body 33 of the cylinder lock is fitted and engaged with a latch 27 provided on the lock. Of the key 36 inserted into the key notch 37 formed in the driving body 33 and protruding from the rear end face of the outer cylindrical body 32 and inserted into the cylinder lock.
Obstacle piece 3 for drill having obstacle portion 39b facing 6a
A lock device for a door, characterized in that the lock device (9) is engaged and mounted. 2. The latch mounting part 25 according to claim 1, wherein the inside of the insertion trunk part 22 of the lock handle 21 is separated from the inner peripheral wall of the insertion trunk part and is provided integrally with the insertion trunk part. A lock device for a door, wherein a cylinder lock 31 is detachably detachable by a rotation operation of a latch member 40 pivotally supported by a lock handle 21. 3. A lock housing 11 having a fitting recess 15, a sleeve-like lock member 28 which is provided in the lock housing and has a rear end portion 28d protruding from a rear portion of the lock housing. A lock handle 21 having an insertion body 22 into which a part 28a of the member 28 can be inserted and a handle 23 fitted into the fitting recess so as to be substantially flush with the surface of the lock housing; A spring member 30 provided in the body 11 and constantly biasing the lock handle in the protruding direction, and a cylinder lock 31 fitted into the fitting hole 24 of the lock handle so that the surface does not substantially protrude.
And a rotary rod 26 provided inside the lock so that the drive shaft 33a of the drive body 33B of the cylinder lock fits with the latch 27 provided on the lock. A drill that fits into the key notch 37B formed in the driving body and intersects with the insertion part 36a of the key 36 inserted in the cylinder lock into the driving body 33B protruding from the rear end surface of the outer cylindrical body 32B. A lock device for a door, characterized in that the obstacle pin 39B is fixedly provided. 4. A lock housing 11 having a fitting recess 15, a sleeve-like lock member 28 which is provided in the lock housing and has a rear end 28d protruding from a rear portion of the lock housing. A lock handle 21 having an insertion body 22 into which a part 28a of the member 28 can be inserted and a handle 23 fitted into the fitting recess so as to be substantially flush with the surface of the lock housing; A spring member 30 provided in the body 11 and constantly biasing the lock handle in the protruding direction, and a cylinder lock 31 fitted into the fitting hole 24 of the lock handle so that the surface does not substantially protrude.
And a rotary rod 26 provided inside the lock so that the drive shaft 33a of the drive body 33C of the cylinder lock is fitted and engaged with a latch 27 provided on the lock. A driving body 33C protruding from the rear end surface of the outer cylindrical body 32 is drilled in a key notch 37C formed in the driving body and opposed to an insertion portion 36a of a key 36 inserted into a cylinder lock. A lock device for a door, provided with an obstruction piece for use 39C. 5. A lock housing 11 having a fitting recess 15; a sleeve-like lock member 28 which is provided in the lock housing and has a rear end 28d protruding from a rear portion of the lock housing. A lock handle 21 having an insertion body 22 into which a part 28a of the member 28 can be inserted and a handle 23 fitted into the fitting recess so as to be substantially flush with the surface of the lock housing; A spring member 30 provided in the body 11 and constantly biasing the lock handle in the protruding direction, and a cylinder lock 31 fitted into the fitting hole 24 of the lock handle so that the surface does not substantially protrude.
And a turning rod 26D provided inside the lock so that the drive shaft 33a of the driving body 33D of the cylinder lock fits and engages with a latch 27D provided on the lock. A lock device for a door, wherein a drill obstacle plate (39D) is fitted into a fitting hole of a rod (26D).