JPH08338164A - Cap for lock protective device - Google Patents

Abstract

PURPOSE: To protect a locking part of a lock protective device by a cap for a lock protective device. CONSTITUTION: A cap for a lock protective device comprises a case 20 where a slit 20b is formed, a fitting part 22 fitted to a connecting part of the lock protective device, and an elastic arm part 25 which is provided in the case 20 and has a click part 26. When a locking part 6 of the lock protective device is inserted in the slit 20b, the click part 26 is elastically deformed by the locking device 6 of the lock protective device and then engaged with the locking part 6. When the lock protective device is forcedly pulled outward to the case 20, the engagement of the locking part 6 with the click part 26 is released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap, and more particularly to a cap for covering a locking portion of a lock protection device mounted on a locking device.

[0002]

2. Description of the Related Art As disclosed in Japanese Utility Model Registration No. 3008407, for example, a cylinder lock protection device for protecting a keyhole of a cylinder lock into which a foreign substance is inserted is known. This cylinder lock protection device includes a lock plate and a guide plate that are inserted into a key cylinder of a cylinder lock provided in a vehicle. The key portion of the lock plate has a predetermined key plate thickness and width, and the key portion has a half-divided shape, and has a recess at the position of the tumbler in the key cylinder. When the lock plate and the guide plate are overlaid and inserted into the key hole of the specified key cylinder,
A guide mechanism that slides so that the overlapped key width changes in the key cylinder is provided, and the convex portion formed on the guide plate is locked in the tumbler groove of the key cylinder and locked at a predetermined position. In this way, the protection device can be attached to the cylinder lock to prevent the cylinder lock from being broken or stolen.

[0003]

By the way, in the above cylinder lock protection device, the lock plate and the guide plate may protrude outward, and there is a risk of damaging clothes or the like during carrying. In addition, there is a drawback that it cannot be used because it is damaged or deformed when it comes into contact with a hard object.

An object of the present invention is to provide a lock protection device cap that protects the locking portion of the lock protection device.

Another object of the present invention is to provide a lock protection device cap that serves as a key for unlocking the lock protection device while protecting the locking portion of the lock protection device.

[0006]

A cap for a lock protection device according to the present invention comprises a case (20) having a front wall (23) having a slit (20b) and a connecting portion (1c) of the lock protection device. Fitting part (22) and case (20)
An elastic arm portion (2) provided inside and having a claw portion (26)
5). When the locking part (6) of the lock protection device is inserted into the slit (20b), the locking part (6) of the lock protection device elastically deforms the claw part (26) and then the locking part (6) Engaged. When the lock protection device is forcibly pulled outward with respect to the case (20), the engagement between the locking portion (6) and the claw portion (26) is released.

In the embodiment of the present invention, a plurality of magnets (21) for unlocking the lock protection device are embedded in the fitting portion (22). The fitting portion (22) is provided with a protrusion (22a) that engages with the connecting portion (1c) formed in the housing (1) of the lock protection device. The elastic arm (25) is
2) Attached to and slit (20b) in case (20)
Project toward. In another embodiment, the elastic arm portion (25) is attached to the case (20) and the fitting portion (22).
Project toward.

A lock protection device cap according to another embodiment of the present invention includes a case (20) having an opening (20a) and a slit (20b), and a case (20) movably disposed in the case (20). The fitting portion (22) abutting on the stopper portion (20c) formed on the periphery of the opening portion (20a), and the fitting portion (2
The spring (27) is provided for pressing 2) against the stopper (20c). The fitting part (22) is fitted to the connecting part (1c) of the lock protection device. Elastic arm part (25) having a claw part (26) on one of the fitting part (22) and the case (20)
And the inclined surface (28a) is formed on the other side of the fitting portion (22) and the case (20) so as to correspond to the elastic arm portion (25). When the locking part (6) of the lock protection device is inserted into the slit (20b), the locking part (6) of the lock protection device is elastically deformed and then the locking part (6) Engaged. The mating part (2
When 2) is pressed inward, the claw part (26) moves along the inclined surface (28a), and the engagement between the locking part (6) and the claw part (26) is released. The claw portion (26) of the arm portion is locked to the ratchet (6b) of the locking portion (6) or to the cutout portion (6c) of the locking portion (6).

Further, in another embodiment of the present invention, a case (20) having a fitting part (22) which is fitted to the connecting part (1c) of the lock protection device, and the case (20) are rotated. Cover (4) that is fitted and has slits (20b)
0) and a clip (60) for attaching the cover (40) to the case (20). When the locking part (6) of the lock protection device is inserted into the slit (20b), the locking part (6) is elastically deformed by the locking part (6) of the lock protection device, and then the locking part (6) is clipped. (60) is engaged. When the cover (40) is rotated, the locking part (6) and the clip (6
0) is disengaged.

The cover (40) includes a cover body (41), a pair of half-moon-shaped projections (42) protruding from the cover body (41),
An arcuate notch (43) is formed between the cover body (41) and the half-moon-shaped projection (42), and the arcuate notch (43) forms the neck (44). Division (43)
The clip (60) is engaged with. The cover body (41) has a flange (41) that abuts the step (20e) of the case (20).
a) is formed.

[0011]

[Function] The locking part (6) of the lock protection device is slit (20
When inserted in b), the claws (26) of the elastic arm (25)
Alternatively, the locking portion (6) can be locked to the clip (60) with one touch to protect the locking portion (6) of the lock protection device. Further, when the lock protection device is pulled with respect to the lock protection device cap or the fitting part (22) is pressed inward, the claw part (2) is forced or along the inclined surface (28a).
6) or the clip (60) moves to release the engagement between the locking portion (6) and the claw portion (26) or the clip (60). Further, since the lock protection device cap provided with the magnet (21) can be used as a key of the lock protection device, the lock protection device and the lock protection device cap can be carried together.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a lock protection device cap according to the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the lock protection device cap according to the present invention has an opening 20a and a slit 20.
Case 2 having a lid portion 23 as a front wall on which b is formed
0, and the opening 2 is movably arranged in the case 20.
The fitting portion 22 abutted on the stopper portion 20c formed on the peripheral edge of the groove 0a and the spring 27 for pressing the fitting portion 22 against the stopper portion 20c are provided. The lid 23 may be formed integrally with the case 20. The claw portion 23a formed integrally with the lid portion 23 is locked in the fitting hole 20c of the case 20. Although not shown, the plurality of claw portions 23 are formed on the lid portion 23 at regular angular intervals in the circumferential direction. The claw portion 23a includes an inclined surface 23b and an upright surface 23c. The inclined surface 23b deforms the case 20 to the outside, and the upright surface 23c is locked in the fitting hole 20c. An arm plate 24 made of synthetic resin is fixed to the fitting portion 22, and a pair of flexible elastic arm portions 25 and a boss 24a are formed on the arm plate 24. The claw portion 26 formed at the tip of each elastic arm portion 25 has a claw 26a provided outside, a claw 26b provided inside, and a notch 26c formed between the claws 26a and 26b. . An inclined surface 28 a (FIG. 3) is formed on the protrusion 28 protruding inside the case 20 so as to correspond to the elastic arm portion 25.

As shown in FIGS. 3 and 4, a plurality of magnets 21 are concentrically embedded in the fitting portion 22 at regular angular intervals. Further, as shown in FIG. 10, a horseshoe-shaped protrusion 22 a fitted to a horseshoe-shaped connecting portion 1 c formed in the front wall 1 a of the housing 1 is formed in the fitting portion 22. A ring portion 20d that serves as a key holder is formed on the case 20.

As shown in FIG. 10, the lock protection device has a housing 1 having a front wall 1a and a side wall 1b connected to the front wall 1a. A plurality of recesses 10 are formed on the inner surface of the front wall 1a of the housing 1 and are formed in the same circumferential shape at substantially equal angular intervals. As shown in FIG. 12, the housing 1
A cam wall portion 11 having a substantially V-shaped cross section is formed on the inner surface of the side wall 1b. The cam wall portion 11 may have a U-shaped cross section. A rotor 2 having a holder 12 is rotatably arranged in the housing 1. The holder 12 has a plurality of holding holes 13 formed in the axial direction corresponding to the recesses 10 of the housing 1 (FIG. 10).
And a magnet tumbler 3 is provided in each holding hole 13.
And a tumbler spring 4 are arranged, and the tumbler spring 4 presses the magnet tumbler 3 toward the recess 10 of the housing 1.

As shown in FIGS. 10 and 12, the rotor 2
A pair of sliders 5 are arranged in the slider holes 15 formed in the above so as to be slidable in the radial direction. The circular protrusions 5a of the pair of sliders 5 are pressed radially outward by the slider spring 19 toward the cam wall portion 11 of the housing 1.
The locking portion 6 attached to the slider 5 projects outward from the housing 1 and is engaged with a radial wall 32 of a key hole 31 provided in a lock device 30 such as a cylinder lock. The resin of the slider 5 made of resin is partially fixed to the hole 6a formed in the locking portion 6 made of metal, and the locking portion 6 is fixed to the slider 5. An annular outer plate 16 and a spacer 17, which are fixed to the housing 1 so as to form a part of the housing 1, are fixed to the front portion of the housing 1. The lock device 30 is, for example, a door panel 33 of an automobile.
(Fig. 10).

Each magnet 21 facing each magnet tumbler 3 has the same polarity as that of the magnet tumbler 3, and when the lock protection device cap according to the present invention is approached, the elasticity of the tumbler spring 4 is caused by the same polarity of the magnet. The magnet tumbler 3 is moved in the direction away from the magnet 2 against the force.

In the above construction, as shown in FIGS. 10 and 11, the lock protection device cap is attached to the housing 1.
When the projection 22a is fitted to the connecting portion 1c,
The magnet tumbler 3 is separated from the recess 10 of the housing 1 so that the housing 1 and the rotor 2 can rotate relative to each other. When the housing 1 is rotated together with the regular key 20 in this state, the housing 1 is relatively rotated with respect to the rotor 2, and the cam wall portion 11 of the housing 1 is rotated by the rotation as shown in FIGS. By moving the slider 5 and the locking portion 6 in the radial direction, the locking portion 6 can be removed from the key hole 31 of the lock device 30. When a different type of key is brought close to the housing 1, the magnet tumbler 3 is held in a state of being engaged with the recess 10 of the housing 1, so that the housing 1 and the rotor 2 cannot rotate relative to each other, and the locking portion 6 Cannot be moved in the radial direction.

When the locking portion 6 of the lock protection device is inserted into the slit 20b of the lock protection device cap, after the claw portion 26 is elastically deformed by the inclined portion 6a formed in the locking portion 6 of the lock protection device. The ratchet 6b of the locking portion 6 is engaged with the claw portion 26. The locking portion 6 shown in FIG. 10 is a single ratchet 6b engaged with the radial wall 32 of the key hole 31.
However, the locking portion 6 shown in FIG. 1 has two ratchets 6b that are engaged with the radial wall 32 of the key hole 31 and the adjacent tumbler, and are engaged with the claws 26a and 26b, respectively. Thus, when the locking portion 6 of the lock protection device is inserted into the slit 20b, the locking portion is locked to the claw portion 26 of the elastic arm portion 25 with one touch to protect the locking portion 6 of the lock protection device. can do.

The fitting portion 22 resists the elasticity of the spring 27.
When the protrusion 22a of 2 is manually pushed inward, the protrusion 22a of the fitting portion 22 contacts the protrusion 28. At this time, as shown in FIGS. 3, 6 and 8, the claw portion 26 moves along the inclined surface 28a of the protrusion 28, the engagement between the locking portion 6 and the claw portion 26 is released, and the lock protection is performed. The device cap and the lock protection device can be separated.

Further, as shown in FIGS. 10 and 11, since the lock protection device cap provided with the magnet 21 can be used as a key of the lock protection device, the lock protection device and the cap can be carried together. Is.

17 to 24 and 25 to 28 show the second and third embodiments of the lock protection device cap according to the present invention. In these drawings, the same parts as those shown in FIGS. 1 to 16 are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 17 to 22, the clip 6
In the second embodiment of the cap for a lock protection device according to the present invention which uses 0, the cover 40 having the slit 20b formed therein is rotatably arranged in the case 20. The cover 40 includes a rotor body 41, a pair of half-moon-shaped protrusions 42 protruding from the rotor body 41, and an arc-shaped cutout portion 43 formed between the rotor body 41 and the half-moon-shaped projection 42. The neck portion 44 is formed by 43. The rotor body 41 is formed with a flange portion 41a that abuts the step portion 20e of the case 20. The tip of the half-moon-shaped protrusion 42 contacts the inner surface of the fitting portion 22 of the case 20. As shown in FIG. 20, a hole 47 in which the spring 45 and the ball 46 are accommodated and a lug 48 that determines the rotation angle of the rotor body 41 are formed in the rotor body 41. The ball 46 is pressed by the V-shaped notch 50 formed on the inner wall of the case 20 by the elasticity of the spring 45. Lug 48 is case 20
It is arranged in the arcuate notch 51 formed in the. When the rotor body 41 is rotated with respect to the case 20, the balls 46 overcome the V-shaped notch 50 and move to the V-shaped notch 52 against the elastic force of the spring 27.

Four through holes 53 to 56 are formed in the case 20, and grooves 57 and 58 are formed on the outer surfaces between the pair of through holes 53 and 54 and between the pair of through holes 55 and 56, respectively.
Is formed. A substantially U-shaped clip 60 is arranged in the through holes 53 to 56. Clip 60 has through holes 53 and 5
5 and between the through holes 54 and 56, the annular notch 43
And both ends of the clip 60 are bent inward. Since the clip 60 is locked in the annular cutout 43,
It is possible to prevent the case 20 and the cover 40 from being separated.

As shown in FIGS. 21 and 22, a return spring 61 can be attached to the half-moon shaped protrusion 42. Both ends 61a, 6 of the return spring 61
The inner protrusion 62 of the case 20 and the half-moon-shaped protrusion 4 between 1b.
The protrusion 64 of the bracket 63 formed integrally with the 2 is arranged.

In the above structure, when the locking portion 6 of the lock protection device is inserted into the slit 20b of the cap for the lock protection device, the clip 60 is formed by the inclined portion 6a formed in the locking portion 6 of the lock protection device. After elastically deforming, the ratchet 6b of the locking portion 6 is engaged with the clip 60.
As shown in FIG. 23, when the locking portion 6 is rotated together with the cover 40 against the elastic force of the return spring 61, the engagement between the ratchet 6b and the clip 60 is released, and the locking portion 6 is pulled out from the cover 40. be able to. At this time,
The protrusion 64 of the bracket 63 is the inner protrusion 6 of the case 20.
Since it is in a position rotated from 2, the locking portion 6 is attached to the case 4
After being pulled out from 0, the elasticity of the return spring 61 causes the cover 40 to automatically return to the initial position shown in FIG.

In the third embodiment shown in FIGS. 25 to 28,
An example in which the pair of elastic arm portions 25 are locked in the cutout portions 6c formed in the locking portion 6 is shown. The elastic arm portion 25 extends from the arm plate 24, and a claw portion 26 that engages with the cutout portion 6 c of the engaging portion 6 is provided at the tip of the elastic arm portion 25. When the engaging portion 6 is detached from the claw portion 26, when the fitting portion 22 is pressed, the claw portion 26 abuts the inclined surface 28a of the lid portion 23 and separates from the notch portion 6c.

The embodiment of the present invention is not limited to the above-mentioned embodiment, and can be modified. For example, the spring 27 may be omitted, and the fitting portion 22 having the pair of elastic arm portions 25 may be fixed to the case 20. In this case, when the locking portion 6 of the lock protection device is inserted into the slit 20b, the claw portion 26 is elastically deformed by the inclined portion 6a of the locking portion 6 and then engaged with the ratchet 6b of the locking portion 6. . When the lock protection device is forcibly pulled outward with respect to the case 20, the engagement between the locking portion 6 and the claw portion 26 is released.

Further, FIGS. 1 and 3 and FIGS. 25 and 2
6 shows an example in which the arm plate 24 having the arm portion 25 is attached to the fitting portion 22 to form the inclined surface 28 on the lid portion 23. However, is the arm portion 25 integrally formed on the lid portion 23? The arm plate 24 may be attached to the lid portion 23 and the inclined surface 28 may be formed on the fitting portion 22.

The lid 23 may be formed integrally with the case 20.

[0031]

According to the present invention, the locking portion of the lock protection device can be protected by the lock protection device cap, and contact, damage or deformation to the human body can be prevented. In addition, since the lock protection device cap that serves as a key for unlocking the lock protection device can be used, it is possible to achieve convenience of carrying.

[Brief description of drawings]

FIG. 1 is a sectional view of a lock protection device cap according to the present invention attached to a lock protection device.

FIG. 2 is a side view of FIG.

FIG. 3 is a cross-sectional view of a lock protection device cap according to the present invention removed from the lock protection device.

FIG. 4 is a front view of a lock protection device cap according to the present invention.

FIG. 5 is a rear view of the lock protection device cap according to the present invention.

6 is a sectional view taken along the line AA of FIG.

7 is a rear view of FIG.

FIG. 8 is a sectional view showing a state in which the fitting portion is pressed.

FIG. 9 is a cross-sectional view showing a state in which the lock protection device cap is removed from the lock protection device.

FIG. 10 is a sectional view showing a state in which a lock protection device fixed to a cylinder lock is unlocked.

FIG. 11 is a sectional view showing a state in which the locking portion is separated from the cylinder lock.

12 is a sectional view taken along line BB of FIG.

13 is a sectional view taken along the line CC of FIG.

14 is a sectional view taken along the line DD of FIG.

FIG. 15 is a cross-sectional view taken along the line BB of FIG. 10 showing a state where the housing is rotated.

16 is a sectional view taken along the line C-C in FIG. 10 showing a state in which the housing is rotated.

FIG. 17 is a sectional view showing a second embodiment of the lock protection device cap according to the present invention.

FIG. 18 is a sectional view taken along the line AA of FIG.

FIG. 19 is a view showing a state in which a lock protection device is attached.
Sectional view of 7

20 is a cross-sectional view taken along the line BB of FIG.

FIG. 21 is a sectional view showing an example in which a return spring is attached.

22 is a sectional view taken along the line AA of FIG.

[FIG. 23] A- of FIG. 17 showing a state in which the rotor is rotated.
Sectional view along line A

FIG. 24 is a side view of FIG. 21.

FIG. 25 is a sectional view showing the third embodiment of the lock protection device cap according to the present invention.

FIG. 26 is a back view of the case

FIG. 27 is a sectional view showing a state in which a lock protection device is attached.

FIG. 28 is a view showing a state in which a lock protection device is attached.
Sectional view of 5

[Explanation of symbols]

1c ··· connection part, 6 · · locking part, 6b · · ratchet, 20 · · case, 20a · · opening, 20b
..Slits, 20c..Stoppers, 21..Magnets, 22..Mating parts, 22a..Protrusions, 2
3 ... Lid (front wall), 24 ... Arm plate, 25 ...
Elastic arm part, 26 ... Claw part, 27 ... Spring, 28a ... Inclined surface, 40 ... Cover, 41 ...
・ Cover body, 41a ・ ・ Flange part, 42 ・ ・ March-shaped projection, 43 ・ ・ Arc-shaped notch part, 44 ・ ・ Neck part, 60 ・ ・ Clip

Claims (13)

[Claims] 1. A case having a front wall in which a slit is formed, and a fitting portion fitted to a connecting portion of a lock protection device,
An elastic arm portion having a claw portion provided in the case, and when the locking portion of the lock protection device is inserted into the slit,
After the pawl part is elastically deformed by the locking part of the lock protection device,
A lock protection device cap characterized in that when the lock protection device is engaged with the locking part and the lock protection device is forcibly pulled outward with respect to the case, the engagement between the locking part and the claw part is released. 2. The cap for a lock protection device according to claim 1, wherein a plurality of magnets for unlocking the lock protection device are embedded in the fitting portion. 3. The lock protection device according to claim 1, wherein the fitting part is provided with a protrusion that engages with a connecting part formed in a recess of the housing of the lock protection device. 4. The lock protection device according to claim 1, wherein the elastic arm portion is attached to the fitting portion and projects toward the slit of the case. 5. The lock protection device according to claim 1, wherein the elastic arm portion is attached to the case and projects toward the fitting portion. 6. A case having an opening and a slit formed therein, a fitting portion movably arranged in the case and abutting on a stopper formed at a peripheral edge of the opening, and the fitting portion being a stopper. The fitting portion is fitted to the connecting portion of the lock protection device, and the elastic arm portion having the claw portion is provided on one of the fitting portion and the case, and the fitting portion and the case are provided. On the other side, an inclined surface is formed corresponding to the elastic arm part, and when the locking part of the lock protection device is inserted into the slit,
After the pawl part is elastically deformed by the locking part of the lock protection device,
When it is engaged with the locking part and presses the fitting part inward against the elasticity of the spring,
The lock protection device cap, wherein the claw portion moves along the inclined surface, and the engagement between the locking portion and the claw portion is released. 7. The lock protection device cap according to claim 6, wherein a plurality of magnets for unlocking the lock protection device are embedded in the fitting portion. 8. The lock protection device cap according to claim 5, wherein the fitting portion is provided with a protrusion that engages with a connection portion formed in a recess of the housing of the lock protection device. 9. The lock protection device cap according to claim 5, wherein the claw portion of the arm portion is locked to the ratchet of the locking portion. 10. The cap for a lock protection device according to claim 5, wherein the claw portion of the arm portion is locked to the cutout portion of the locking portion. 11. A case having a fitting portion to be fitted to a connecting portion of a lock protection device, a cover rotatably attached to the case and having a slit, and a clip for attaching the cover to the case. When the locking part of the lock protection device is inserted into the slit,
The lock protection device characterized in that after the clip is elastically deformed by the locking portion of the lock protection device, the locking portion is engaged with the clip and the engagement between the locking portion and the clip is released when the cover is rotated. Device cap. 12. The cover comprises a cover body, a pair of half-moon-shaped projections protruding from the cover body, and an arcuate cutout formed between the cover main body and the half-moon-shaped projection, and the neck is formed by the arcuate cutout. The lock protection device cap according to claim 11, wherein a portion is formed, and the clip is engaged with the arcuate cutout portion. 13. The cap for a lock protection device according to claim 11, wherein the cover body is formed with a flange portion that comes into contact with a step portion of the case.