KR20040092179A - Steering Lock of Automobile - Google Patents

Abstract

PURPOSE: A steering lock for a vehicle is provided to reduce operation noise by simultaneously moving a lock bolt and a slider toward a steering column and smoothly contacting the lock bolt with the steering column when a steering wheel is locked or unlocked. CONSTITUTION: A steering lock for a vehicle is composed of an ignition knob(50), a cam shaft(52) rotated integrally with the ignition knob and disposed parallel with a steering column, a slider(54) fit into the cam shaft and sliding perpendicular to the steering column, a lock bolt(56) fixed to the end of the slider at the steering column side, an elastic member(58), and a cam member(60) installed between the slider and the cam shaft. The lock bolt is coupled to the steering column and restricts the rotation of the steering column when the slider moves toward the steering column. The elastic member is installed between the end of the slider at the cam shaft side and a vehicle body, and elastically pushes the slider to the steering column. The cam member is interlocked with the cam shaft, and slides the slider toward the steering column. The cam member includes an inclined plate cam(62) having an inclined surface, and a rotary cam(64) contacting with the inclined surface and rotated simultaneously with the cam shaft.

Description

Steering Lock of Automobile

The present invention relates to a vehicle steering lock, and more particularly to a vehicle steering lock in which a slider slides in conjunction with the rotation of the camshaft.

Recently, when the driver grabs the door of the vehicle while holding a personal IC card that the driver is the owner of the vehicle, the locked door is automatically unlocked, and when the driver rides, the steering wheel and the driver The PIC system has been developed to allow the driver to start the vehicle by releasing the ignition knob installed to allow the driver to start the vehicle by holding and rotating it.

As described above, the PIC system vehicle is provided with a steering lock which prevents theft of the vehicle by locking the operation of the ignition knob and the steering wheel when the vehicle is parked.

The steering lock according to the prior art is disposed in parallel with the steering column (2), the cam shaft (6) axially sliding and rotatably installed in conjunction with the ignition knob (4), and the cam shaft (6) The slider 8 fitted to slide in the orthogonal direction of the steering column 2 and fixed to the end of the steering column 2 side of the slider 8 so that the slider 8 slides toward the steering column 2 side; The slider is installed between the lock bolt 10 inserted into the lock ring 2a of the steering column 2, the cam shaft 6 side end of the slider 8, and the housing 12 of the steering lock. 8) is composed of a compression spring 14 for applying a force to slide toward the steering column 2 side, the rotation of the steering column (2) when the lock bolt 10 is in close contact with the steering column (2) phrase And by locking the steering wheel (1).

Further, the steering lock is a lock pin 16 protruding toward the ignition knob 4 at the end of the cam shaft 6 side of the slider 8 and the lock when the ignition lobe 4 rotates in the starting direction. Cam 18 for moving the pin 16 in the direction away from the steering column (2) and the camshaft 6 and the ignition knob (4) is installed so that the shift lever is located at the parking end and the ignition knob ( If 6) is a lock step, the ignition knob 4 further includes a solenoid 20 for restraining rotation of the ignition knob 4 and sliding the cam shaft 6 toward the ignition knob 4. ) Rotates in the starting direction, the slider 8 and the lock bolt 10 are returned to their positions due to the mutual coupling relationship between the lock pin 16 and the cam 18 to lock the steering wheel 1. Release it.

Looking at the operation of the prior art configured as described above are as follows.

When the vehicle is starting, as shown in FIG. 3, the ignition knob 4 is positioned at the accessory switch (ACC) stage or the on stage, and the lock pin 16 is opposed to the steering column 2. Since the slider (8) and the lock bolt (10) is separated from the steering column (2) because it is caught by the cam (18), the steering wheel (1) is unlocked, and the slider (8) A compression spring 14 is compressed between the housings 12 of the steering lock.

In this state, when the shift lever is operated to the parking stage and the ignition knob 4 is in the lock step, the solenoid 20 is operated as shown in Figs. 1 and 2 to operate the ignition knob 4. The cam 18 is spaced apart from the lock pin 16 because the cam shaft 6 is moved to the ignition knob 4 side while being restrained, so that the slider 8 and the lock bolt 10 of the compression spring 14 By the elastic force it is instantaneously slid towards the steering column 2.

Therefore, since the lock bolt 10 is kept in close contact with the steering column 2 by the elastic force of the compression spring 14, even if the startup operation is performed by the connection of the electric circuit without the start permission, Not only is it difficult to operate the steering wheel 1 due to the friction of the steering column 2 and the lock bolt 10, but ultimately, when the steering wheel 1 is slightly rotated, the lock bolt 10 is compressed by the compression spring 14. It is inserted into the lock ring (2a) by the elastic force of the completely restrains the rotation of the steering column (2) can not drive the vehicle normally can be prevented theft.

Of course, when a person holding a personal IC card rides in a vehicle, the solenoid 20 unlocks the ignition knob 4 to allow normal starting, and the driver turns the ignition knob 4 on in the lock phase. In step 3, the cam shaft 6 rotates together with the ignition knob 4 and simultaneously moves toward the slider 8 by the solenoid 20 as shown in FIG. The lock pin 16 is locked to the cam 18 by the shape of 18 so that the slider 8 and the lock bolt 10 are separated from the steering column 2 to allow the steering wheel 1 to be operated. Will be done.

However, in the vehicle steering lock according to the related art, when the shift lever is located at the parking end and the ignition knob 4 is positioned in the lock step, the elastic force of the compression spring 14 is momentarily released while the locking action of the lock pin 16 is released. By the lock bolt 10 is in close contact with the steering column 2 by the collision between the lock bolt 10 and the steering column 2 is generated a metal collision noise, the solenoid 20 There is a problem that the operating noise of the vehicle is transmitted to the cabin.

The present invention has been made to solve the above problems of the prior art, to provide a steering lock for a vehicle that can improve the quality in terms of sensitivity by preventing the operation noise generated when locking or unlocking the steering wheel. The purpose is.

1 is a perspective view of the lock of the steering lock according to the prior art,

2 is a partial cutaway perspective view of FIG. 1, FIG.

Figure 3 is a perspective view of the unlocking the steering lock according to the prior art,

4 is a perspective view of the incision during unlocking of the steering lock according to the present invention;

5 is a cross-sectional view taken along the line 'A-A' of FIG. 4,

6 is a cross-sectional view of the steering lock in accordance with the present invention.

<Explanation of symbols on main parts of the drawings>

50: ignition knob 52: cam shaft

54: Slider 56: Lock Bolt

58: elastic member 60: cam member

62: inclined plate cam 64: rotating cam

Vehicle steering lock according to the present invention for solving the above problems and the ignition knob is installed in the cabin so that the driver can hold and start the operation; A cam shaft coupled to the rotation knob integrally and disposed in parallel with the steering column; A slider fitted to the cam shaft so as to be slidable in a direction orthogonal to the steering column; A lock bolt fixed to a steering column side end of the slider and coupled to the steering column to restrain the rotation of the steering column when the slider moves to the steering column side; An elastic member installed between the cam shaft side end of the slider and the vehicle body to push the slider toward the steering shaft; And a cam member installed between the slider and the cam shaft to slide the slider in association with rotation of the cam shaft.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The vehicle steering lock according to the present invention includes an ignition knob 50, a cam shaft 52 coupled to rotate integrally with the ignition knob 50 and disposed in parallel with a steering column (not shown), and the cam shaft ( 52, a slider 54 fitted to slide in a direction orthogonal to the steering column, a lock bolt 56 fixed to the steering column side end of the slider 54 to limit steering action, and the slider 54 Is installed between the cam shaft side end and the vehicle body and pushes the slider 54 toward the steering column, and is provided between the slider 54 and the cam shaft 52 and the cam shaft 52. It is configured to include a cam member 60 for sliding the slider 54 in conjunction with the rotation of the).

In the above, the ignition knob 50 is rotatably installed next to a steering wheel (not shown) that performs steering operation according to the driver's will, and when the driver grabs and turns clockwise, the locking step of turning off the engine in order Then, the driver may directly start the operation by guiding the accessory switch step of applying power to the accessory of the vehicle, the ON step of maintaining the starting, the starter step of turning on the starter motor for starting the vehicle.

Of course, the ignition knob 50 is locked between the ignition knob 50 and the camshaft 52 so that the ignition knob 50 can be operated only when the start is permitted through authentication of the personal IC card. The camshaft 52 and the ignition knob 50 so that the camshaft 52 can be integrally rotated with the ignition knob 50 upon unlocking and the unlocking of the ignition knob 50. ) Is provided with a solenoid 51.

Next, the slider 54 is formed in a long bar shape in a direction orthogonal to the steering column, and is fitted to the cam shaft 52 on the cam shaft 52 side and slides in a direction orthogonal to the steering column. A slot 54a is formed, and there is a coupling portion 54b to which the lock bolt 56 is partially inserted and fixed at the end of the steering column side. The retainer 54c protrudes toward the elastic member 58 so as to be easily coupled to the elastic member 58 at the end of the cam shaft 52 side of the slider 54.

The lock bolt 56 has a portion of the slider 54 side tightly fitted into the engaging portion 54b of the slider 54, and the steering column side other portion is formed in the slot shape in the axial direction to be long in the steering column. It is formed into a bar shape of a predetermined size so that it can be easily inserted into or removed from a ring (not shown).

The elastic member 58 is a compression coil spring installed so as to be elastic in a direction orthogonal to the steering column between the cam shaft 52 side end of the slider 54 and the steering lock housing 59 forming the exterior of the steering lock. For example, when the vehicle is parked, the lock bolt 56 is installed to have a predetermined elastic force to be in close contact with the steering column to restrain the rotation of the steering column.

Here, an opening hole 59a is formed in the steering lock housing 59 at a portion where the elastic member 58 is installed, and the opening hole 59a covers the opening hole 59a and the elastic member. A cap 59b supporting 58 is covered.

The cam member 60 converts the rotational movement of the cam shaft 52 into a linear movement perpendicular to the steering column so that the slider 54 is interlocked with the cam shaft 52 when the cam shaft 52 is rotated. To guide the sliding.

In particular, the cam member 60 guides the slider 54 to slide slowly toward the steering column while the ignition knob 50 is rotated from the accessory switch (ACC) step to the lock step, thereby locking the lock bolt 56. ) Momentarily hit the steering column.

That is, the cam member 60 protrudes vertically toward the cam shaft 52 from the slot 54a of the slider 54 on the cam shaft 52 side, and the cam shaft 52 is turned off when the vehicle is turned off. ) Is in contact with the inclined plate cam 62 having the inclined surface 62a inclined toward the slider 54 in the direction of rotation, that is, the counterclockwise direction, and the inclined surface 62a of the inclined plate cam 62 to contact the cam shaft. And a bar-shaped rotary cam 64 fitted to the cam shaft 52 so as to rotate together with the 52.

In more detail, the inclined plate cam 62 is one surface facing the cam shaft 52 when the ignition knob 50 is rotated in the start step direction, which is in the accessory switch step, that is clockwise It is formed with a smooth surface 62b parallel to the camshaft 52.

As shown in FIG. 5, the inclined plate cam 62 side of the rotary cam 64 has a cam shaft side apex 62c of the inclined plate cam 62 when the ignition knob 50 is positioned at an accessory switch stage. The inclined plate cam 62 while the first vertex 64a is rounded and the ignition knob 50 is rotated from the accessory switch step to the lock step around the first vertex 64a as shown in FIG. 6. The surface in contact with the inclined surface (62a) of the) is formed as a straight surface (64b), as shown in Figure 6 the ignition knob (50) around the first vertex (64a) turned on in the accessory switch step, The surface contacting the inclined surface 62a of the inclined plate cam 62 is formed as a smooth curved surface 64c while rotating in the starter stage.

Looking at the operation of the present invention configured as described above are as follows.

When the vehicle is starting, as shown in Figs. 4 and 5, the rotary cam 64 is elongated in the direction orthogonal to the steering column to be in contact with the cam shaft side vertex 62c of the inclined plate cam 62. Since the slider 54 and the lock bolt 56 are separated from the steering column toward the cam shaft 52, the steering column can be freely rotated so that the steering wheel can be steered.

At this time, the elastic member 58 is compressed between the slider 54 and the steering lock housing 59.

In this state, when the ignition knob 50 is rotated in the direction of starting off, in particular in the accessory switch step, the lock step, as shown in FIG. 6, the rotary cam 64 is the inclined surface of the inclined plate cam 62 ( The slider 54 and the lock bolt 56 are moved to the steering column side by the elastic force of the elastic member 58 because it rotates counterclockwise in contact with 62a).

At this time, the slider 54 is moved toward the steering column as much as the rotary cam 64 is rotated counterclockwise from the cam shaft side vertex 62c of the inclined plate cam 62. When 50) rotates from the accessory switch stage to the lock stage, it gradually moves toward the steering column in accordance with the rotational speed of the ignition knob 50. Therefore, the lock bolt 56 is lightly adhered to the steering column, so that the collision sound is very small.

When the ignition knob 50 is locked, the solenoid 51 restrains the rotation of the ignition knob 50. When the vehicle is parked, the rotation of the cam shaft 52 is also restrained so that the lock bolt 56 is locked. ) Is kept in close contact with the steering column, so steering operation is limited.

On the other hand, after the start is allowed, if the ignition knob 50 is rotated to the accessory switch, on, starter step in the lock step, the cam shaft 52 and the rotary cam 64 as shown in Figs. ) Also rotates clockwise, so that the slider 54 is pushed in the direction away from the steering column by the rotary cam 64, so that the lock bolt 56 is pulled away from the steering column to enable steering operation. .

As described above, the steering lock according to the present invention actually measured the collision sound between the steering column and the lobe bolt 56 at the steering column side at the time of the steering lock, and the collision sound level was 68.1 ㏈, which is 17.2 ㏈ from the conventional sound level of 85.4 ㏈. It is lower. In addition, since the crash sound level is 71.6 경우 for a non-PIC specification vehicle, it can be seen that the present invention is superior in terms of noise than the general specification.

In the vehicle steering lock according to the present invention configured as described above, the cam shaft is rotated in conjunction with the ignition knob, and when the ignition knob rotates from the accessory switch step to the lock step between the cam shaft and the slider, the slider of the cam shaft Since the cam member for converting the rotational movement of the camshaft to linear movement is installed so that it can be slid to the steering column side in accordance with the rotational speed, when the vehicle is parked, the lock bolt moves together with the slider toward the steering column and moves to the steering column. Since it is lightly adhered, there is an advantage that the impact noise is small and the quality can be improved in terms of sensitivity.

In addition, the present invention, when the ignition knob is located in the lock phase, because the solenoid is operated to restrain the rotation of the ignition knob, the operation noise is not only small compared to the conventional as well as the advantage that the structure can be simplified to reduce the cost There is this.

Claims (3)

An ignition knob installed in the vehicle compartment so that the driver can hold and perform a start operation; A cam shaft coupled to the rotation knob integrally and disposed in parallel with the steering column; A slider fitted to the cam shaft so as to be slidable in a direction orthogonal to the steering column; A lock bolt fixed to a steering column side end of the slider and coupled to the steering column to restrain the rotation of the steering column when the slider moves to the steering column side; An elastic member installed between the cam shaft side end of the slider and the vehicle body to push the slider toward the steering shaft; And a cam member installed between the slider and the cam shaft to slide the slider in association with the rotation of the cam shaft. The method of claim 1, And the cam member guides the slider to slide toward the steering shaft while the ignition knob rotates from an accessory switch (ACC) step to a lock off step. The method according to claim 1 or 2, The cam member protrudes from the slider toward the cam shaft and has an inclined plate cam having an inclined surface inclined toward the slider in the rotational direction of the cam shaft when the engine is turned off; And a bar-shaped rotating cam fitted to the cam shaft so as to contact the inclined surface of the inclined plate cam and rotate integrally with the cam shaft.