JP3689297B2 - Steering lock device - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a cylinder lock fixing structure for preventing theft in a steering lock device.
[0002]
[Prior art]
In the steering lock device, a cylinder lock including a cylinder inner and a cylinder outer, and a lock shaft that prevents rotation of the steering shaft at a lock position according to rotation of the cylinder inner are housed in the body. Some cylinder locks stored in the body are fixed by caulking, etc., but in order to enable replacement and improve serviceability, a lock pin that is urged so as to protrude in the outer circumferential direction is provided on the cylinder outer In addition, it is also known that the lock pin is engaged with the engagement hole of the body and the lock pin can be pushed in at a predetermined rotation position of the cylinder inner so that the cylinder lock can be removed.
[0003]
Further, the body, the cylinder lock and the like are generally molded by zinc die casting or the like.
[0004]
However, in such things, in order to remove the cylinder lock from the body for the purpose of fraud, for example, hitting the lock pin with a punch and forcibly pushing the pin, drilling a hole with a drill, removing the lock pin, The cylinder lock could be removed from the body.
[0005]
[Problems to be solved by the invention]
This invention pays attention to this point, and an object of the present invention is to prevent unauthorized removal of the cylinder lock from the body using a tool or the like.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, in the steering lock device of the present invention, a cylinder lock composed of a member including a cylinder inner and a cylinder outer, and rotation of the steering shaft at a lock position according to the rotation of the cylinder inner. The lock shaft to be blocked is housed in the body, and the cylinder lock is held in the body by engaging the lock pin provided on the cylinder outer and urged so as to protrude in the outer circumferential direction with the engagement portion of the body. And a metal reinforcing plate having a pin hole having a smaller diameter than the engaging portion of the body is provided, and the reinforcing plate is attached to the body at a position where the pin hole covers the engaging portion of the body. I have to.
[0007]
The reinforcing plate is preferably fixed to the body with a one-way screw that can rotate only in the tightening direction.
[0008]
Moreover, it is preferable that the said reinforcement board is formed with the hardness which cannot be drilled.
[0009]
Furthermore, the pin hole formed in the reinforcing plate may be smaller than the diameter of the lock pin.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The objective of preventing unauthorized removal of the cylinder lock from the body using a tool has been achieved with the minimum number of parts required to attach a metal reinforcing plate.
[0011]
【Example】
1 is a plan view of the steering lock device of the present invention, FIG. 2 is a partially cutaway schematic front view, and is a partial cross-sectional view taken along line AA of FIG. In FIG. 2, the key is inserted from the front on the right side of the figure. 1 is a cylinder inner, 2 is a lock seal, and 3 is a cylinder outer. The lock seal 2 and the cylinder inner 1 are sequentially inserted into the cylinder outer 3 from the left side of the figure, and these are rotatably held. A lock 4 is constructed. Reference numeral 5 denotes a cam connected to the cylinder inner 1. When the key is inserted into the cylinder inner 1 and rotated, the cam 5 rotates together, and the rotor 6a of the switch portion 6 provided on the same axis rotates. A predetermined switch operation is performed.
[0012]
The cylinder inner 1, the cylinder outer 3, and the cam 5 are formed by zinc die casting.
[0013]
7 is a lock shaft for preventing the steering shaft from rotating, 7a is an operation portion thereof, and 8 is a spring for biasing the lock shaft. When the key is removed at the lock position, the lock shaft 7 is pushed upward by the spring 8. It protrudes and is configured to lock a steering shaft (not shown). 9 is a body that accommodates each of the above members, 10 is a lock pin attached to a protrusion 3 a formed at the upper rear end of the cylinder outer 3, and 11 is a rattling between the cylinder outer 3 and the body 9. It is a rubber member.
[0014]
After the cylinder inner 1 is inserted into the cylinder outer 3, the lock pin 10 is inserted together with the spring 10a into the recess 3b formed in the projection 3a of the cylinder outer 3, and the pressing plate 10b is fixed by means such as caulking. Is attached to the cylinder outer 3 by the spring 10a, and the spring receiver 10c protrudes to a position where it comes into contact with the holding plate 10b by the urging force in the outer circumferential direction, and the outer end 10d is an engaging portion formed on the body 9. The joint hole 12 is engaged.
[0015]
In this example, a flange portion 15 having a large outer diameter and a step portion 16 having a smaller diameter are formed on the back side of the cylinder inner 1. The lock pin 10 is provided at a position corresponding to the step portion 16, and the length thereof is such that the inner end portion 10e penetrates the recess 3b while the outer end portion 10d is engaged with the engagement hole 12. The outer peripheral portion of the step portion 16 is selected so as to substantially contact the outer peripheral portion. Therefore, when the cylinder inner 1 is inserted into the cylinder outer 3 and the lock pin 10 is attached, the cylinder inner 1 is prevented from coming off by the hook-shaped portion 15 hitting the lock pin 10, and the cylinder assembly centering on the cylinder lock 4 is temporarily removed. The assembled state is maintained.
[0016]
Further, the cylinder inner 1 can be rotated from the lock position (LOCK) shown in FIG. 3 to the start position (START) through the ACC position and the ON position, and FIG. 5 shows a state in the lock position. A concave portion 17 is formed on the outer peripheral portion of the portion 16 at a position that matches the lock pin 10 when the cylinder inner 1 is in the ACC position. The recess 17 is selected to have a size that allows the inner end 10e of the lock pin 10 to be inserted, and the lock pin 10 can be pushed to the position where the outer end 10d comes out of the engagement hole 12 only at the ACC position.
[0017]
Therefore, by rotating the cylinder inner 1 incorporated in the cylinder outer 3 to this ACC position, the lock pin 10 can be pushed in as shown in FIG. 6, and the cylinder lock 4 can be inserted into the body 9 in this state. After the insertion, the outer end portion 10d of the lock pin 10 engages with the engagement hole 12, the cylinder outer 3 is fixed to the body 9, and the cylinder inner 1 cannot move to the back side. The operation of taking out the cylinder outer 3 from the body 9 can also be performed by setting the cylinder inner 1 to the ACC position and pushing in the lock pin 10. The position where the lock pin 10 can be pushed in is not limited to the ACC position, and other appropriate rotation positions can be selected.
[0018]
Further, as shown in FIGS. 1 and 4, a metal reinforcing plate 18 is fastened and fixed to the body 9 with a one-way screw 19 at a position covering the engagement hole 12 of the body 9.
[0019]
The reinforcing plate 18 is made of a metal material that cannot be drilled or the like, for example, a material quenched into an iron plate, and as shown in FIGS. 7 (a) and 7 (b), a pair of attachments formed by bending the base 18a to both sides. Portions 18b and 18b and a cover portion 18c extending to one side are formed. The mounting portions 18b and 18b are formed with mounting holes 18d and 18d through which the one-way screw 19 is inserted, and the cover portion 18c has a diameter smaller than the diameter of the engagement hole 12 of the body 9 and the lock pin 10 and φ1. A pin hole 18e of about 5 mm is formed. The pin hole 18e is located approximately at the upper center of the lock pin 10. Therefore, even if a drill thinner than the pin hole 18e is used, the lock pin 10 cannot be broken.
[0020]
As shown in FIGS. 8A and 8B, the one-way screw 19 is formed by a flange portion 19a and a screw portion 19b, and a Phillips screwdriver is fitted into the flange portion 19a, and the screwdriver is clockwise (screw tightening). A cross groove 19c is formed so that the screw can be tightened by being engaged with the driver when rotated in the direction), and the driver idles when rotated counterclockwise.
[0021]
Then, after the metal reinforcing plate 18 is fastened and fixed, an attempt is made to remove the cylinder lock 4 from the body 9 in an unauthorized manner (without using a key), and the upper portion of the lock pin 10 is driven with a punch, Even if an attempt is made to make a hole, the reinforcing plate 18 prevents the hole. Further, with a thin metal rod that passes through the pin hole 18e, the metal rod breaks first and the lock pin 10 cannot be pushed in. That is, only when the key is inserted into the cylinder inner 1, the cylinder inner 1 is rotated to the ACC position, and the lock pin 10 is pushed in with a thin metal rod, the lock pin 10 can be pushed in, and the cylinder lock 4 can be pushed into the body 9. It can be removed from.
[0022]
Since the reinforcing plate 18 is simply attached by screw tightening, if this reinforcing plate is removed, it becomes the same as the conventional example. Therefore, it is possible to selectively use a product that does not require high theft and a product that requires high theft, and can share parts.
[0023]
The lock seal 2 provided at the key insertion opening is for theft prevention to prevent the cylinder inner 1 from rotating even if a tool such as a driver is struck from the key insertion opening. The holding force for preventing the movement of the cylinder inner 1 to the back side is relatively small, and even if the lock seal 2 is provided, the cylinder inner 1 comes off in the back direction and the anti-theft effect is reduced. However, in this example, as shown in FIG. 2, a step portion 9a is provided in a part of the body 9, and the flange portion 15 is brought into contact therewith, so that the movement of the cylinder inner 1 to the back side is also prevented. It is surely prevented from coming off in the rear direction.
[0024]
【The invention's effect】
As is apparent from the above description, the steering lock device of the present invention is provided with a metal reinforcing plate in which a pin hole having a smaller diameter than the engaging portion of the body is provided, and the pin hole covers the engaging portion of the body. The reinforcing plate is attached to the body at a different position.
[0025]
Therefore, even if you try to remove the cylinder lock from the body in an unauthorized manner (without using the key) and hit the top of the lock pin with a punch or the like, the destruction of the body will be prevented by the reinforcing plate, and the cylinder lock will not be removed. Absent.
[0026]
In addition, if the reinforcing plate is fixed to the body with a one-way screw that can be rotated only in the tightening direction, the reinforcing plate will not be removed, and it is only the mounting of the reinforcing plate by screw tightening, If this reinforcing plate is not attached, it becomes the same as the conventional example, and it is possible to make common parts for a product that does not require high theft and a product that requires high theft.
[0027]
And if the reinforcing plate is formed with a hardness that cannot be drilled, it cannot be broken by drilling, and if the pin hole formed in the reinforcing plate is less than the diameter of the lock pin, the lock pin cannot be broken. In addition, the high theft can be improved.
[Brief description of the drawings]
FIG. 1 is a plan view of a steering lock device of the present invention.
FIG. 2 is a partial cross-sectional front view (partial cross-sectional view taken along line AA of FIG. 1) of the steering lock device of the present invention.
FIG. 3 is a right side view of FIG.
FIG. 4 is a plan view of the steering lock device of the present invention. It is BB sectional drawing of FIG.
FIG. 5 is a plan view of the steering lock device of the present invention. It is CC sectional drawing of FIG.
FIG. 6 is a view showing a state in which a lock pin is pushed in at an ACC position of a cylinder inner.
FIG. 7 is an enlarged view of the reinforcing plate of the present invention, (a) is a front view of the reinforcing plate, and (b) is a DD cross-sectional view thereof.
FIG. 8 is an enlarged view of the one-way screw of the present invention, (a) is a front view of the one-way screw, and (b) is a side view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cylinder inner 3 Cylinder outer 4 Cylinder lock 7 Steering shaft 9 Body 10 Lock pin 12 Engagement hole (engagement part)
18 Reinforcing plate

Claims (4)

A cylinder lock composed of a member including a cylinder inner and a cylinder outer, and a lock shaft that prevents rotation of the steering shaft at the lock position in accordance with the rotation of the cylinder inner are housed in the body and are provided in the cylinder outer. In the steering lock device that holds the cylinder lock in the body by engaging the lock pin biased so as to protrude in the outer peripheral direction with the engagement portion of the body,
A metal reinforcing plate having a pin hole smaller in diameter than the engaging portion of the body is provided, and the reinforcing plate is attached to the body at a position where the pin hole covers the engaging portion of the body. A steering lock device. The steering lock device according to claim 1, wherein the reinforcing plate is fixed to the body with a one-way screw that can be rotated only in a tightening direction. The steering lock device according to claim 1, wherein the reinforcing plate is formed with a hardness that cannot be drilled. The steering lock device according to claim 1, wherein a pin hole formed in the reinforcing plate is equal to or smaller than a diameter of the lock pin.

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