JP3525973B2 - Handle lock 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 handle lock device.

[0002]

2. Description of the Related Art A handle lock device is disclosed in Japanese Patent Laid-Open No.
No. 2,608,855 "Vehicle steering lock device" is known. This technique, as shown in FIG. 1 of the publication, includes a cylinder 20 having a keyhole 22 and a tumbler 24, and a lock bar which rotates integrally with the cylinder 20.
An operating shaft 33 having a crank portion 34 for putting in and taking out 52 is housed in the housing 12, and the cylinder 2
When a rotatable rotor 57 is provided between the shaft 0 and the operating shaft 33 and a hole is drilled in the cylinder 20, the drill hits the rotor 57 and idles, making further cutting work impossible. It makes it possible.

[0003]

However, in the above-mentioned prior art, when a scissor or a screwdriver is inserted into the keyhole 22 and it is forcibly turned or a shock is applied with a large force in the axial direction of the cylinder 20, the tumbler 24 is damaged, The operating shaft 33 may rotate integrally with the cylinder 20, the lock bar 52 may move, and the handle lock may be released. An object of the present invention is to provide a handle lock device in which it is difficult to release the lock even when the cylinder is forcibly turned or is struck in the cylinder axial direction.

[0004]

In order to achieve the above object, the first aspect of the present invention is that a crankshaft is composed of two parts, a cylinder part and a crank part, and the crank part is connected to the cylinder part. It was equipped with a flange that breaks when it is struck with a large force, and was connected to the cylinder part via this flange.

When the cylinder portion is struck in the axial direction, the flange portion is broken. When the flange portion breaks, the crank portion cannot rotate, so that the lock cannot be released and theft and the like can be prevented.

According to a second aspect of the present invention, the cylinder portion of the first aspect is provided with a fuse groove on the outer periphery which is broken when it is rotated by a large force.

The fuse groove is broken when the cylinder portion is rotated with a large force. Further, the flange portion is broken when the cylinder portion is struck in the axial direction. If the fuse groove breaks, the crank part will not rotate, and similarly, if the flange part breaks, the crank part will not rotate.
In either case, the lock cannot be released, and theft and the like can be prevented.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of a front portion of a motorcycle equipped with a handle lock device according to the present invention. The motorcycle 1 includes a steering head 2 attached to a front portion of a frame (not shown) and a steering head 2 shown in FIG. A front fork 3 swingably attached through a handle post (not shown), a front tire 4 with a wheel attached to an end of the front fork 3, a front fender 5 covering the upper portion of the front tire 4, and a front fork 3. A handle 6 swinging integrally, a clutch lever 7 attached to the left and right of the handle 6, a front brake lever (not shown), and rearview mirrors 11, 11.
(The right side is omitted) and grips 12 and 12 attached to the left and right ends of the handle 6.

The motorcycle 1 has a windshield 13, a speedometer 14 and a tachometer 15, a main switch 18 with a steering wheel lock device 16 (see FIG. 3) attached to a front portion of the steering head 2, and a steering head in this order. (2) A fuel tank 21 mounted on the upper part of the rear frame, an engine 22 mounted on the frame below the fuel tank 21, and an exhaust pipe 23 taken out from the front part of the engine 22.

FIG. 2 is a plan view of the main switch with a handle lock device according to the present invention.
Is a key hole 28a on the upper surface and an OF showing the rotation position of the key.
It has indications of F, ON, PUSH and LOCK.

When the key is in the OFF position, the engine 22 (see FIG. 1) is stopped and the handle 6 (see FIG. 1).
Is unlocked. You can insert the key in this position. When the key is in the ON position, the engine 22 can be started. Here, the starter switch is turned on to start the engine 22. The handle 6 is of course unlocked.

When locking the handle, first, referring to FIG.
2, the handle 6 is fully turned to the left or right, and in this state, the key of the main switch 18 is pushed at the OFF position, and in FIG. 2, it is turned counterclockwise to the LOCK position. At this LOCK position, the key returns to the original height position above due to the urging force from below, and the steering wheel lock is completed. This LOC
At the K position, the key can be pulled out.

FIG. 3 is a sectional view taken along line 3-3 of FIG. 2, showing a state where the key is in the LOCK position. Main switch 18
Is composed of an upper handle lock device 16 and a lower ignition switch unit 17. The handle lock device 16 includes a lock outer cylinder 26 attached to the vehicle body and the lock outer cylinder 26.
Cover 27, a protector block 28 housed in the upper part of the lock outer cylinder 26 so as to be pivotable and vertically movable, and a spacer 2 provided under the protector block 28.
9 and 9.

In addition, the handle lock device 16 includes a crank shaft 33 composed of a cylinder portion 31 and a crank portion 32 housed in a lower portion of the spacer 29 so as to be pivotable and vertically movable, and a crank portion 32 of the crank shaft 33. Lock pin 34 that is locked or unlocked by turning
And a coil spring 36 for urging the crank portion 32 upward via a retainer 35. Reference numeral 38 is a coupler.

The protector block 28 has a key hole 28a for inserting a key. The cylinder part 31 is
The tumblers 31b ... (... indicates a plurality; the same applies hereinafter) drawn by inserting a key into the key insertion hole 31a, the fuse groove 31c formed on the outer peripheral surface above the tumbler 31b, and the lower convex portion 31d, 31d (one side is omitted). The crank portion 32 has flanges 32a, 32a that engage with the convex portions 31d, 31d of the cylinder portion 31.
(One side is omitted) and a crank 32b for inserting and removing the lock pin 34.

FIG. 4 is a perspective view of a cylinder portion and a crank portion according to the present invention. The cylinder portion 31 has a fuse groove 31c formed over the entire outer circumference of the upper portion and has convex portions 31d, 31d at the lower portion. . 31e, 31e
(The back is omitted) is a recess. The crank portion 32 has flanges 32 a and 32 a that engage with the convex portions 31 d and 31 d of the cylinder portion 31 on the upper portion and is rotatable integrally with the cylinder portion 31.

The flanges 32a, 32a are provided in the cylinder portion 3
It is fitted in the concave portions 31e, 31e of No. 1 and receives the axial force transmitted from the cylinder portion 31. When a large axial force, which will be described later with reference to FIG. 6, acts on the flange 32a, the flange 32a breaks because the plate thickness t is small.

The operation of the handle lock device described above will be described below. FIG. 5 is a perspective view showing the operation of the cylinder portion according to the present invention, and the key insertion hole 31a of the cylinder portion 31.
If you insert a deformed object D such as scissors or a screwdriver other than the key into the, and forcefully turn it with a large force (torque = T1),
When the torque T1 exceeds the breaking torque of the fuse groove 31c having the lowest strength, the fuse groove 31c is broken.

FIGS. 6 (a) and 6 (b) are perspective views showing the operation of the crank portion according to the present invention. FIG. 6 (a) is an engagement state of the convex portion of the cylinder portion and the flange portion of the crank portion, b) shows a broken state of the flange portion. In (a), the recesses 31e, 31e (rear portions are omitted) of the cylinder portion 31 are fitted to the flange portions 32a, 32a, and the coil spring 36 (see FIG. 3) is attached when the cylinder portion 31 is pushed by the key. The crank portion 32 is moved downward against the power.

In (b), a deformed object D (see FIG. 5) such as scissors or a driver other than the key is inserted into the key insertion hole 31a (see FIG. 5) of the cylinder portion 31, and a large force ( = F1), the flange 32
When the force F1 becomes larger than the shear breaking force (= F2) of a and 32a, the flanges 32a and 32a break. As a result, the cylinder portion 31 and the crank portion 32 are no longer engaged, and the lock pin 34 cannot be moved to release the handle lock.

As described above, the fuse groove 31c (see FIG. 5) is broken when it is forcedly turned, and the flange 32a is broken when it is hammered in. It exerts a high prevention effect against theft due to (see FIG. 5).

The handle lock device of the present invention is not limited to the motorcycle of the embodiment, but may be a motorcycle of three or four wheels.
It can be used in electric vehicles and work vehicles.

[0023]

The present invention has the following effects due to the above configuration. According to another aspect of the present invention, in the handle lock device, the crankshaft is composed of two parts, that is, a cylinder part and a crank part, and is provided with a flange that breaks when the crank part is struck by a large force into a connecting part with the cylinder part. Since it is connected to the cylinder portion through this flange, when the flange portion is broken, the crank portion cannot rotate, so that the handle lock cannot be released and theft or the like can be prevented.

In the handle lock device of the second aspect, the cylinder portion of the first aspect is provided with the fuse groove on the outer periphery which is broken when it is rotated by a large force. Therefore, when the fuse groove is broken, the crank portion cannot be rotated. Similarly, if the flange portion breaks, the crank portion will not rotate, and in any case, the handle lock cannot be released, and theft or the like can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of a front portion of a motorcycle including a handle lock device according to the present invention.

FIG. 2 is a plan view of a main switch with a handle lock device according to the present invention.

3 is a sectional view taken along line 3-3 of FIG.

FIG. 4 is a perspective view of a cylinder portion and a crank portion according to the present invention.

FIG. 5 is a perspective view showing the operation of the cylinder portion according to the present invention.

FIG. 6 is a perspective view showing the operation of the crank portion according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Motorcycle, 16 ... Handle locking device, 26 ... Lock outer cylinder, 31 ... Cylinder part, 31a ... Key insertion hole, 31b
... Tumbler, 31c ... Fuse groove, 32 ... Crank part,
32a ... Flange, 33 ... Crank shaft, 34 ... Lock pin.

Claims (2)

(57) [Claims] 1. A lock outer cylinder attached to a vehicle body accommodates a crankshaft for inserting and removing a lock pin, a tumbler is provided on the crankshaft, a key insertion hole is provided on an end surface of the crankshaft, and a key is inserted into the key insertion hole. In a handle lock device of a type in which a tumbler is unlocked by inserting the crankshaft into a crankshaft so that the crankshaft can rotate, the crankshaft is composed of two parts, a cylinder part and a crank part, and the crank part is a cylinder part. A handle lock device characterized in that it has a flange that breaks when it is struck with a large force at the connecting part with and is connected to the cylinder part through this flange. 2. The handle lock device according to claim 1, wherein the cylinder portion has a fuse groove on its outer periphery that is broken when the cylinder portion is rotated by a large force.