JPH1144132A - Protecting device for cylinder lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve convenience in use and operability by setting a lock by blocking up a key hole by holding a shutter in a set position by a magnet lock, and opening the key hole by releasing the magnet lock by the magnetism of a magnet when the magnet arranged in a lug part of an ignition key is contacted with the magnet lock. SOLUTION: When a shutter 15 movably arranged in a head part of a cylinder lock 1 is set in a set position in the head part 1a by manual operation from outside, the shutter 15 is held by a magnet lock, and a key hole 5 of an upper surface of a rotor 3 is blocked up, and is put in a locking condition. On the other hand, at time releasing the magnet lock, when a magnet arranged in a lug part 4b of an ignition key 4 is contacted with the magnet lock, the shutter 15 is moved in the reset position direction by the magnetism of the magnet, and the key hole 5 is opened. That is, a protecting device can be set by manual operation from outside without using an exclusive magnet key, and the magnet lock can also be released only by contacting the magnet of the ignition key with the magnet lock.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder lock protection device which can prevent a cylinder lock from being broken in a motorcycle or the like.

[0002]

2. Description of the Related Art Conventionally, in order to prevent a foreign object such as scissors from being inserted into a key hole of a cylinder lock of a parked motorcycle or the like by a third party to break the cylinder lock, for example, Japanese Patent Application Laid-Open No. -53348 and JP-A-61-517.
No. 5 discloses a cylinder lock disclosed.

[0003] The cylinder lock of the former (Japanese Patent Application Laid-Open No. 9-53348) has a cover composed of a plurality of rings on which symbols are displayed on the outer peripheral surface of the head of the cylinder lock, and the symbol of each ring is set at a predetermined position. If not set, the cover is locked and prevented from being removed from the cylinder lock to protect the cylinder lock.If the symbol of each ring is set to a predetermined position, the cover is unlocked. It is configured to be removed from the head of the cylinder lock.

In the latter cylinder lock (JP-A-61-5175), a rotary plate is rotatably held at a key hole opening of a holding frame, and a shutter plate is disposed inside the rotary plate. The rotation of the rotating plate and the opening / closing operation of the shutter plate are interlocked. When the shutter plate is closed, the magnet housed in the holding frame so as to be freely retractable is locked by the elastic force on the rotating plate so that the rotating plate is closed. The rotation is inhibited, and the rotation inhibition of the rotating plate is released from outside by a magnet key that repels the magnet.

[0005]

However, in the former cylinder lock, a cover formed by a plurality of rings separate from the cylinder lock is detachably covered on the head of the cylinder lock. Therefore, when the motorcycle runs, it is necessary to remove this cover from the cylinder lock and store it in a pocket or bag. For this reason, there is a problem in that the cover is easily lost and it is necessary to pay attention to its storage.

Further, in the latter cylinder lock, since the opening and closing operation of the shutter plate must be performed by the magnetism of the magnet provided on the magnet key, not only when the shutter plate is opened but also when the shutter plate is closed. In addition, it is necessary to engage the hook portion of the magnet key with the hook portion of the rotating plate interlocking with the shutter, and move the magnet key one by one to rotate the rotating plate.
There is a problem that the operability is inferior.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the present invention is to improve the usability without requiring a separate cover and the like, and to facilitate the setting operation and the like. It is another object of the present invention to provide a cylinder lock protection device capable of improving operability by using a conventional cylinder lock in addition to the object of the first embodiment. An object of the present invention is to provide a cylinder lock protection device which can be easily formed at a low cost.

[0008]

In order to achieve the above object, according to the first aspect of the present invention, a set position and a reset position in the head of a cylinder lock are manually operated from outside the cylinder lock. Between the shutter and the key hole on the upper surface of the rotor by opening and closing, a magnet lock for closing and locking the key hole with the shutter by holding the shutter at the set position, An ignition key that unlocks the magnet lock and opens a key hole by the magnetism of a magnet provided on the knob portion.

With this configuration, the shutter movably provided in the head of the cylinder lock is set at the set position in the head by manual operation from outside the cylinder lock. At this set position, the shutter is held by the magnet lock, the key hole is closed, and the shutter is locked. In this locked state, the key hole is closed by the shutter, making it difficult to insert foreign matter such as scissors into the key hole, thereby preventing breakage of the cylinder lock due to foreign matter insertion or the like.

On the other hand, the unlocking of the magnetic lock (transition from the set position of the shutter to the reset position) is performed by, for example, bringing the magnet provided on the knob of the ignition key into contact with the magnetic lock, and the shutter is moved in the reset position direction. And the keyhole is opened. That is, the protection device is set by an external manual operation without using a dedicated magnet key, and the unlocking of the magnet lock is performed only by bringing the magnet of the ignition key into contact with the magnet lock.

Further, in the invention according to claim 2, the magnet lock is provided on a ring covered by the head of the cylinder body of the cylinder lock, and the shutter is provided movably in a mounting hole of the ring. It is characterized by the following.

With such a configuration, the magnet lock is provided on the ring provided on the head of the cylinder body of the cylinder lock, and the shutter is provided movably in the mounting hole of the ring. Therefore, it can easily cope with various existing cylinder locks.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 10 show an embodiment of a cylinder lock using a protection device according to the present invention, FIG. 1 is a plan view thereof, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. FIG. 4 is a sectional view taken along line BB of FIG.
5 is a cross-sectional view taken along line CC of FIG. 2, FIG. 6 is a cross-sectional view showing the operation state of FIG. 5, and FIG. 7 is FIG.
8 is a perspective view of the ignition key, FIG. 8 is a perspective view of the ignition key, and FIGS. 9 and 10 are a plan view showing the unlocking operation and a partially cutaway side view.

In FIGS. 1 and 2, a cylinder lock 1 is
The cylinder body 2 has an open upper end and an open lower end, and a substantially cylindrical rotor 3 is rotatably disposed in the upper end opening of the cylinder body 2. The rotor 3 has a key hole 5 into which an ignition key 4 is inserted from an upper surface thereof along a central axis, and a fitting convex portion at an upper end portion of a cam 6 is fitted into a fitting concave portion at a lower central portion thereof. doing.

The cam 6 has a cam shaft 6a having a lock bar slider 7 having a rear end locked thereto, and a lock bar slider 7 having a lock bar 8 locked to the front end thereof. The lock bar 8 is provided in the square hole 9 of the cylinder body 2 so as to be able to advance and retreat, and protrudes outside from the square hole 9 by the rotation of the cam shaft 6a due to the rotation of the rotor 3 to lock the steering. Also, a contact board 10 is provided at the fitting portion 6b at the lower end of the cam 6.
Are fitted, the contact board 10 is rotated by the rotation of the fitting portion 6b, and predetermined contacts are opened and closed.

A substantially cap-shaped ring 1 whose upper surface is covered with a cover 13 made of a nonmagnetic material is provided on the upper outer peripheral surface of the cylinder body 2 which is the head 1a of the cylinder lock 1.
2 is fixed by screws 14. As shown in FIGS. 5 and 6, a shutter mounting hole 12 a is formed in the upper surface of the ring 12, and a shutter 15 is movably disposed in the shutter mounting hole 12. As shown in FIGS. 3 and 4, a magnet lock 16 is provided on the upper surface of the ring 12, and the magnet lock 16 and the shutter 15 form a protection device for the cylinder lock 1.

The shutter 15 is formed of a non-magnetic material such as brass into a shape shown in FIG. 5, and a plurality of (four in the figure) engaging portions 17a to 17d are provided on an outer peripheral edge thereof. In the vicinity of the portion 17d, a protruding portion 18 which protrudes outside the ring 12 by a predetermined length is provided. The engaging portions 17a and 17c are formed by concave portions that are opened on the outer peripheral edge of the shutter 15, and the engaging portions 17b and 17d are provided between the engaging portions 17a and 17c and between the engaging portion 17d and the protruding portion 18. Is formed by the outer peripheral edge of. The engaging portions 17a to 17d engage with four magnets 23a to 23d of the magnet lock 16 described later.

Further, the engaging portions 17a-1 of the shutter 15
A spring engaging portion 19 is provided on the outer peripheral edge opposite to 7d, and a projection 18 of the shutter 15 always projects between the spring engaging portion 19 and a concave portion 20 provided on the upper surface of the ring 12. A spring 21 composed of a compression coil spring that urges the spring 21 in the direction of movement is interposed. And this shutter 15
Is disposed in the shutter mounting hole 12a of the ring 12, and is provided so as to be movable in the directions indicated by arrows A and B in FIGS. The upper surface of the shutter 15 has a brass plate 2
The cover 13 is covered by a cover 2 (see FIG. 3).

The magnet lock 16 has a plurality of (four in the figure) columnar magnets 23a to 23d corresponding to the engagement portions 17a to 17d of the shutter 15 and arranged in a substantially staggered manner. The magnets 23a to 23d are inserted into holes 24 provided vertically through the upper surface of the ring 12 as shown in FIG. The protrusions 25a of the back cover 25, which are caulked at two places (marked with "x" in FIG. 7), are fitted to the protrusions 12a.

The upper surface of the projection 25a of the back cover 25 and the magnet 2
A spring 26 made of a compression coil spring is interposed between the lower surfaces of 3a to 23d. The magnets 23a to 23d are constantly urged upward by the spring 26, and the shutter 1
5 is a reset position, that is, at a position where the protrusion 18 of the shutter 15 projects outward as shown in FIG. 5, the upper surfaces of the magnets 23a to 23d abut against the lower surface of the shutter 15 with a predetermined frictional force. Also, shutter 1
When the shutter 5 is in the set position, that is, at the position where the shutter 15 is pushed into the innermost side of the shutter mounting hole 12a as shown in FIG. 6, the magnets 23a to 23d rise by the urging force of the spring 26, and And engages with the engaging portions 17a to 17d of the shutter 15.

At the set position of the shutter 15, the magnets 23a to 23d are prevented from being projected upward by a brass plate 22 provided on the upper surface of the shutter 15. When unlocking the magnet lock 16, a magnet 29 a of a magnet key 29, which will be described later, is inserted into and engaged with a portion of the cover 13 corresponding to the position of the magnets 23 a to 23 d of the magnet lock 16 of the shutter 15. A magnet key engagement hole 27 is formed.

On the other hand, as shown in FIG. 8, a magnet key 29 capable of unlocking the magnet lock 16 is provided on the rear side of the insertion portion 4a of the ignition key 4 inserted into and removed from the key hole 5 of the cylinder lock 1. It is provided integrally with the knob 4b. That is, for example, the magnet 23a is provided at the lower end of the knob 4b in the width direction (vertical direction in FIG. 8).
Plural magnets 29a corresponding to 23d (see FIG. 10)
And the magnet 29a functions as the magnet key 29.

The magnet 29a is, for example, insert-molded when the knob 4b is resin-molded into the metal insertion portion 4a of the ignition key 4, and the outer peripheral surface of the magnet 29a is covered with a resin having a predetermined thickness. It is formed so that the existence of 29a is not easily grasped from outside.

The magnet 29a and the magnets on the upper surfaces of the magnets 23a to 23d of the magnet lock 16 are set to have reciprocal magnetism (for example, both N poles or both S poles).

Next, the operation of the cylinder lock 1 will be described. First, when the driver leaves the motorcycle, for example, when parking the motorcycle, a protection device including the shutter 15 and the magnet lock 16 is provided to prevent the cylinder lock 1 from being destroyed by a third party. Set to the set state. This setting state is performed by pushing the projection 18 of the shutter 15 into the head 1a of the cylinder lock 1 by hand and setting the shutter 15 to the set position.

That is, when the projection 18 of the shutter 15 projecting outside the cylinder lock 1 is manually pushed into the head 1a of the cylinder lock 1, the shutter 15 is pushed from the position shown in FIG. Moves in the shutter mounting hole 12a of the ring 12 in the direction of arrow A against the above. At this time, the magnets 23a to 23d of the magnet lock 16 are in contact with the lower surface of the shutter 15 with a predetermined frictional force as shown in FIG.

When the shutter 15 is pushed to the set position shown in FIG. 6, the positions of the four engaging portions 17a to 17d of the shutter 15 and the positions of the four magnets 23a to 23d of the magnet lock 16 are shifted in the vertical direction. Approximately match. At this position, the upper surfaces of the magnets 23a to 23d are opened,
The magnets 23a to 23d are pushed upward by the urging force of the spring 26 and engage with the engaging portions 17a to 17b of the shutter 15 as shown in FIGS.

The engaging portions 17a to 17d of the magnets 23a to 23d
Due to the engagement with the shutter 17d, the shutter 15 is prevented from moving in the direction indicated by the arrow B even when the hand is released from the protrusion 18, and the shutter 15 is locked. At this time, magnet 2
The upper surfaces of 3a to 23d abut against the lower surface of the brass plate 22 to prevent the upper holes from coming off, and the key hole 5 of the rotor 3 has its upper opening closed by the shutter 15.

Thus, the setting operation of the protection device is completed. In this set state, since the key hole 5 is completely closed by the shutter 15, the third person is
Even if foreign matter such as scissors is allowed to enter the interior, the foreign matter cannot enter, and the cylinder lock 1 is prevented from being broken due to mischief or the like.

When the protection device is released from the set state in order to allow the motorcycle to travel, that is, the transition from the set state to the reset state takes place in the key hole 5 of the cylinder lock 1.
Using the ignition key 4 that has been removed from the ignition key 4, insert the magnet key 29 provided integrally with the ignition key 4 into the magnet key engagement hole 27 of the cover 13 as shown in FIGS. 9 and 10. Set.

When the magnet key 29 is set in the magnet key engagement hole 27 of the cover 13, for example, the N-pole magnet 29 a of the magnet key 29 and the N
The pole magnet 23a repels, and the S pole magnet 29a
The pole magnets 23c are repelled, and the repulsive force applies a force to the magnets 23a to 23d to be pressed downward against the urging force of the spring 26. However, magnet 23
The shutters 15a to 23d are pressed by the springs 21 against the engaging portions 17a to 17d and cannot be moved downward by the frictional force, so that the shutter 15 does not immediately move in the direction of arrow B and stops at that position. ing.

In this state, the ring 12 of the shutter 15
The protrusion 18 slightly protruding outside of the cylinder lock 1
When lightly pushed into the head 1a of the shutter 15, the engagement portions 17a to 17d of the shutter 15 are disengaged from the magnets 23a to 23d, and the magnets 23a to 23d move downward and are located in the hole 24. The lock of the magnet lock 16 is unlocked. As a result, the shutter 15 moves in the direction of arrow B by the urging force of the spring 21 and returns to the original position (reset position).
The protection device switches from the set state to the reset state.
In this reset state, by inserting the insertion portion 4a of the ignition key 4 into the key hole 5 and rotating it in the ON direction, for example, a motorcycle can be driven.

When the magnet 29a of the magnet key 29 is set in the magnet key engagement hole 27 of the cover 13, the ring 12, the shutter 15, the cover 13, the brass plate 22, and the like are formed of a non-magnetic material. The magnets 29a of the magnet key 29 do not magnetize the surroundings of the four magnets 23a to 23d of the magnet lock 16, and the magnet key 29 is set in the magnet key engaging holes 27 and the magnets 23a to 23d are set. The rebound operation can be performed smoothly.

As described above, according to the cylinder lock 1 of the above embodiment, the shutter 1 is provided on the upper surface of the opening of the key hole 5 of the rotor 3.
The key hole 5 can be completely closed by the shutter 15 in the set state in which the key hole 5 is movably disposed, so that insertion of foreign matter into the key hole 5 by a third party can be prevented, and The lock 1 can be prevented from being broken, and the motorcycle can be prevented from being stolen.

In particular, since the opening of the key hole 5 of the rotor 3 is covered with the ring 12 and the cover 13, the ring 12 and the cover 13 function as a reinforcing member, and four magnets 23a to 23d of the magnet lock 16 are provided. When the shutter is locked, it is engaged with each of the four engagement portions 17a to 17d.
For example, it becomes difficult to unlock other parts than the magnet key 29, and the effect of preventing the head 1a of the cylinder lock 1 from being broken is further enhanced.

The shutter 15 and the magnet lock 16
Is provided on the ring 12 in advance, and the ring 12 is attached to the upper outer peripheral surface of the cylinder body 2 with a screw 14.
And is integrated with the head 1a of the cylinder lock 1, so that a separate component such as a conventional removable cover such as a removable cover is not required, and a protective device is used. If not, it is not necessary to pay attention to carrying or storing, etc., and it is not lost, so that usability can be improved.

Further, the shutter 15 and the magnet lock 1
6 can easily cope with an existing cylinder lock without changing the structure of the main part of the cylinder lock 1 at all, and can minimize an increase in cost due to a design change.

Further, since the magnet key 29 for unlocking the protection device is provided integrally with the knob 4b of the ignition key 4 of the cylinder lock 1, no separate magnet key is required, and the vehicle is not required. It is possible to effectively use the ignition key 4 essential for traveling. From these things, it becomes possible to obtain an inexpensive protection device.

Further, the protection device can be set by one-handed operation only by pushing the projection 18 of the shutter 15 of the protection device into the head 1a of the cylinder lock 1 for a predetermined distance. There is no need to insert and move the key, and the cover 13 is provided with the magnet key engagement hole 27 so that the magnet key 2
9 magnets 29a to the magnets 23a-23 of the magnet lock 16.
Thus, the setting and resetting of the protection device can be easily performed, for example, the magnetic lock 16 can be reliably unlocked.

In the above embodiment, the case where the four magnets 23a to 23d of the magnet lock 16 are provided has been described. However, the number of the magnets 23a to 23d and the corresponding engaging portions 17a to 17d is, for example, two. Set to 5 or
The number can be set to more than one, and the polarity is not limited to the above embodiment, but can be set appropriately.

In the above embodiment, the magnet 29a of the magnet key 29 is provided at one end in the width direction of the knob 4b of the ignition key 4. For example, the magnet 29a in the thickness direction of the knob 4b of the ignition key 4 is provided. It may be provided on one side. Furthermore, the shape of the shutter 15 and the number of the springs 21 and the ring 12
The structure of the cover 13, the form of the cylinder lock 1, the form of the ignition key 4, and the like are merely examples, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

[0042]

As described above in detail, according to the first aspect of the present invention, the protection device including the shutter and the magnet lock is integrally assembled in the head of the cylinder lock, thereby providing a separate cover or the like. In addition to the above, it is possible to reliably prevent foreign matter from being inserted into the keyhole without the need for a key, and to eliminate loss or the like when the protection device is not used, thereby improving the usability. In addition, the operation to set the shutter can be manually performed from the outside of the cylinder lock without using a magnetic key, thereby improving the operability such as simplifying the setting operation of the protection device. it can.

According to the second aspect of the invention, in addition to the effects of the first aspect, a shutter and a magnet lock can be provided on the ring for reinforcing the head of the cylinder lock. Can be easily handled, and the cost increase due to a design change or the like can be minimized, and an inexpensive protection device can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a cylinder lock using a protection device according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view showing an operation state of FIG. 3;

FIG. 5 is a sectional view taken along line CC of FIG. 2;

FIG. 6 is a sectional view showing an operation state of FIG. 5;

FIG. 7 is a sectional view taken along the line DD in FIG. 2;

FIG. 8 is a perspective view showing an example of the ignition key.

FIG. 9 is a plan view showing the unlocking operation.

FIG. 10 is a side view with a part thereof broken away.

[Explanation of symbols]

 1 ... Cylinder lock 1a ... Head 2 ... Cylinder body 3 ... Rotor 4 ... ... Ignition key 4b ... Knob 5 ... Keyhole 12 ... Ring 12a ... Shutter Mounting hole 13 Cover 15 Shutter 16 Magnet lock 17a-17d Engagement part 18 Projection 21 Spring 23a to 23d Magnet 25 Back cover 26 Spring 27 Magnet key engagement hole 29 ... Magnet key 29a ... Magnet

Claims (2)

[Claims] 1. A shutter which can be moved between a set position and a reset position in the head of a cylinder lock by manual operation from the outside of the cylinder lock to open and close a key hole on an upper surface of a rotor, and the shutter is moved to a set position. The key lock is closed by a shutter and locked by holding the key lock, and the magnet lock is unlocked and opened by the magnetism of the magnet inserted into and extracted from the key hole and provided on the knob. And an ignition key that can be operated. 2. The method according to claim 1, wherein the magnet lock is provided on a ring that is crowned on a head of a cylinder body of the cylinder lock.
The cylinder lock protection device according to claim 1, wherein the shutter is movably provided in a mounting hole of the ring.