JPH04201764A - Steering lock device for vehicle - Google Patents

Abstract

PURPOSE:To contrive reduction of a number of part items and miniaturization of a body by constituting a mechanism, which prevents a steering shaft from being locked before a key is drawn out, of only a key lever and a lock plate housed in a cylinder lock inner cylinder. CONSTITUTION:When a key 8 is inserted into a key insertion hole 9, a flat surface 8a of the key 8 is engaged with a key lever 10, and by swiveling the key lever 10 in a hole 11, a front end part of a lock plate 13 is press upward by an engaging protrusion 10a of the key lever. On the other hand, when the key 8 is drawn out from the key insertion hole 9, the key lever 10 is swiveled by energizing force of a spring 5 and sunk in the inner of a rotor 3, and engagement between the engaging protrusion of the key lever 10 and an engaging hole of the lock plate 13 is released to move a joint 4 rearward by energizing force of the spring 5. Then, engagement of a slider 15 with a peripheral surface of the joint 4 is released to energize the slider 15 in a downward direction by the spring, and a lock pin 16, connected to the slider 15, is protruded to lock a steering shaft impossible to turn.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a steering lock device for a vehicle that locks a steering shaft of an automobile steering wheel so that it cannot rotate in conjunction with the action of an engine starting key. It is related to.

(Prior art) In this type of device, even if the driver involuntarily turns the cylinder lock rotor to the lock position while the vehicle is running, the steering shaft will not be locked unless the key is removed. This is designed to ensure safety while the vehicle is running.

Conventionally, a steering lock device for a vehicle equipped with such a system is known, for example, as disclosed in Japanese Utility Model Application Laid-Open No. 63-74360, and has the following configuration. That is, in order to hold the lock pin in the unlocked position until the key is removed, an engagement lever is swingably provided on the body housing the cylinder lock rotor, and the front end of the engagement lever is connected to the cylinder lock rotor. The rear end of the engaging lever is connected to a locking pin and is connected to a cylinder locking lever that is slidably disposed on the cylinder and engages with a slide piece that is slidably disposed on the rotor and moves outward in the radius of the rotor upon sensing insertion of the key. It is configured to engage and disengage from a slider that slides. When the key is inserted into the cylinder lock rotor, the front end of the engagement lever is pushed up by the slide piece, so that the rear end of the engagement lever engages with the slider and unlocks the lock pin. While the key is held in the locked position, when the key is removed from the cylinder lock rotor, the front end of the engagement lever falls into the cylinder lock rotor together with the slide piece, causing the rear end of the engagement lever to detach from the slider and pin the lock pin. is caused to protrude by a spring biasing force to lock the steering shaft so that it cannot rotate.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional device, since the engagement lever is disposed on the body, the outer diameter of the body becomes large and the attachment of the engagement lever causes However, there is a problem in that the number of parts increases.

(Means for Solving the Problems) The present invention aims to solve the above-mentioned problems in the prior art, and as a means to solve the problems, it is possible to The locking member protrudes from the body and locks the steering shaft so that it cannot rotate, but when the key is inserted and the cylinder lock inner cylinder is rotated toward the on position, the locking member moves back and prevents rotation of the steering shaft. In the steering lock device for a vehicle, the cylinder lock inner cylinder is provided so as to be integral with the rotor and movable relative to the rotor in the axial direction in two rotational directions, and separated from the rotor via a spring. A key lever is provided in the rotor and is displaced in the radial direction upon sensing insertion and removal of the key, and a rear end is connected to the joint and a front end is engaged with the key lever. A lock plate that can be connected to the AC
When rotated to position C, the joint moves forward against the urging force of the spring, and the key lever engages with the lock plate to hold the joint at a position axially offset from the key insertion position. On the other hand, when the key is operated to rotate the rotor from the ACC position to the lock position and the key is removed, the key lever retracts into the rotor due to the biasing force of the spring, causing the key lever and lock plate to engage. When the engagement is released and the joint returns to the key insertion position by the urging force of the spring, the locking member protrudes from the lock body and locks the steering shaft unrotatably.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

First Embodiment FIG. 1 is a longitudinal sectional view of a steering lock device for a vehicle according to the present invention, FIG. 2 is a sectional view taken along r- in FIG. 1, and FIG. 3 is a sectional view taken along Figure 4 is m in Figure 1.
-m cross-sectional view, Figure 5 is the rV-IV cross-sectional view of Figure 1,
Figures 8 to 8 are explanatory diagrams of their functions, and Figure 9 is from Figure 6)
Figure 10 is an exploded perspective view of the area around the rotor.
Figure 1) is a front view of the cylinder lock, Figure 12 is a perspective view showing another embodiment of the rotor, Figure 13 is a perspective view showing another embodiment of the lock plate, and Figure 14 is the lock plate and key lever. FIG. 3 is a sectional view showing another embodiment of the invention.

As shown in FIGS. 1 to 5 and 10, a body 1 of the steering lock device is provided with an ignition switch device 2 at its rear end and a cylinder lock rotor 3 at its front end. .

The rotor 3 and the ignition switch device 2
are connected to each other via a joint 4.

Therefore, by rotating the rotor 3 by operating the key 8 (FIG. 6), the ignition switch device 2 can be operated via the joint 4. The rotor 3
and the joint 4 are coupled so that they can move relative to each other in the axial direction and are integral in one rotational direction, and the joint 4 is
It is always urged backward by a spring 5.

Further, the body 1 has a cam surface 6 (see FIG. 8) formed on its inner periphery. On the other hand, the joint 4 is provided with an engaging protrusion 7 (see FIG. 8) on its outer periphery.

As a result, when the joint 4 is rotated from the lock position to the ACC position via the rotor 3, the joint 4 is moved forward by the cooperative action of the cam surface 6 and the engagement protrusion 7. There is.

A key lever 10 is pivotally supported at the front end of the rotor 3 in a key insertion hole 9, and a hole 1) is bored in the outer periphery of the key lever 10 to allow the key lever 10 to swing. . As a result, the key lever 1 is
0 can be swung so that its engaging protrusion 10a can be engaged with a lock plate 13, which will be described later. Further, the rotor 3 has the holes 1) from the rear end surface.
An insertion hole 12 is formed through the insertion hole 12.
A lock plate 13 made of a plate spring is inserted through the. A locking projection 14 is formed on the zipper 4, and the rear end of the lock plate 13 is locked to the locking projection 14. Further, the lock plate 13 has an engagement hole 13a formed at its front end, so that the engagement protrusion 10a of the key lever 1o can be engaged with the engagement hole 13a.

A slider 15 is housed in the rear portion of the body 1 so as to be vertically slidable. A lock pin 16 is connected to the lower end of the slider 15, and the lock pin 16 can be engaged with and disengaged from a steering shaft (not shown) by vertical sliding movement of the slider 15. . Note that the slider 15 is always urged by a spring 17 in a direction that causes the lock pin 16 to protrude. Furthermore, a semicircular cam 4a is formed at the rear of the joint 4. This semicircular cam 4a is engaged with the slider 15, so that when the joint 4 is rotated via the rotor 3 (see FIG. 7), the slider 15 slides upward. The engagement between the lock pin 16 and the steering shaft can be released by pressing the lock pin 16.

Next, the operation of this embodiment will be explained.

When the key 8 is inserted into the key insertion hole 9 in the locked position shown in FIGS. 1 to 5, the flat surface 8a of the key 8
engages with the key lever 10, and when the key lever 10 swings within the hole 1), its engaging protrusion 10a pushes up the front end of the lock plate 13 (FIG. 6, 18+), and then the key 8 is operated. to move the rotor 3 from the lock position A
When the joint 4 is rotated to the CC position (arrow A in the first figure), the joint 4 rotates as a unit, and the engagement protrusion 7 provided on the joint 4 and the cam surface 6 formed on the body 1 engage with each other. Due to the cooperative action, the joint 4 is displaced forward (see FIG. 8), and the engaging protrusion 10a of the key lever 10 engages with the engaging hole 13a (see FIG. 10) of the lock plate 13 (see FIG. 6). In this state, the engagement protrusion 10a of the key lever 10 is located at the rear end of the engagement hole 13a of the lock plate 13, and is not engaged with the front end of the engagement hole 13a. There is a slight gap between it and the mating protrusion 10a.On the other hand, due to the rotation to the ACC position, the semicircular cam 4a of the slider 4 slides the slider 15 upward and is connected to the slider 15. The engagement between the locked lock pin 16 and the steering shaft is released (see FIG.
7(al), when the rotor 3 is rotated from this state to the lock position, the joint 4 is urged backward by the spring 5, but the joint 4 is pressed against the lock plate 13.
Since it is connected to the rotor 3 via
In this way, in the locked position, the lock moves backward only by the gap between the engagement hole 13a of the opening 7 cupley 13.
The joint 4 is in a state where it is prevented from moving rearward, and the slider 15 is moved toward the outer peripheral surface 4b (the first
When the key 8 is removed from the key insertion hole 9, the lock pin 16 is held in the unlocked position (see Fig. 0). The key lever lO swings due to the biasing force of the spring 5, and the rotor 3
When the key lever 10 is retracted inward, the engagement protrusion 10a of the key lever 10 and the engagement hole 13a of the lock plate 13 are disengaged, and the joint 4 is moved rearward by the biasing force of the spring 5. Then, the outer peripheral surface 4 of the slider 15 and the joint 4
b is disengaged, and the slider 15 is released from the spring 17.
The opening 7 pin 16 connected to the slider 15 protrudes and locks the steering shaft unrotatably (FIGS. 1 and 2).

In the above embodiment, the insertion hole 12 for inserting the lock plate 13 extends from the rear end surface of the rotor 3 to the hole 1.
), but as shown in FIG. 12, it is also possible to form a notch 25 in the rotor 3 and form the insertion holes 12 and 12 only in both walls of the notch 25. Also, in the above embodiment, the lock plate 13 is entirely formed of a leaf spring, but the intended purpose can also be achieved with the following configuration. That is, the 13th
In what is shown in the figure, a lock plate is constructed by attaching a spring body 27 to the front end of a plate body 26 that does not have elasticity. Moreover, in the one shown in the 14th FM, the lock plate is formed of a plate body 28 that does not have elasticity, and the engagement pin 28 is assembled into the key lever 10 while being biased in the protruding direction by a spring 29. There is.

Second Embodiment FIG. 15 is a cross-sectional plan view of a vehicle steering lock device according to the present invention, and FIG. 16 is a cross-sectional plan view of a vehicle steering lock device according to the present invention. ! J
Figure 17 is an exploded perspective view of the area around the button.
FIG. 18 is an explanatory diagram of its operation.

As shown in FIGS. 15 to 17, the body 1 includes:
A rod-shaped button 19 is installed along its longitudinal direction, and its front end 19aL protrudes from the front of the cylinder. The rear end 19b of the button 19 is bent, and the rear end 19b is constantly biased in the four directions of the shield by a spring 20.
The entire body is biased forward. Further, the joint 4 is formed with an engagement surface 21 that engages with the rear end 19b of the button 19 in the ACC position to prevent rotation to the lock position. and the front end 1 of the button 19
By pushing 9a from the outside (Fig. 18 (
bl arrow port), moves the rear end 19b backward against the biasing force of the spring 20, releases the engagement between the rear end 19b of the button 19 and the engagement surface 21, and allows rotation to the lock position. (see 18th V!!J); the other configurations are the same as in the first embodiment. Further, the other functions are the same as those of the first embodiment except that the button 19 must be pressed when rotating from the ACC position to the lock position.

Third Embodiment FIG. 19 is a cross-sectional plan view of a steering lock device for a vehicle according to the present invention, and FIG.
C sectional view and FIG. 21 are exploded perspective views of the area around the button.

As shown in FIGS. 19 to 21, the body 1 includes:
A rod-shaped button 22 is pivotally supported along its longitudinal direction, and its front end 22a protrudes from the outer periphery of the front end of the body 1. The rear end 22b of the button 22 is bent, and the rear end 22b is always urged in the joint 4 direction by a spring 23. Further, the joint 4 is formed with an engagement surface 24 that engages with the rear end 22b of the button 22 in the ACC position to prevent rotation to the lock position. Then, by pressing the front end 22a of the button 22 from the outside (first
9), the rear end 22b is displaced against the biasing force of the spring 23, and the engagement between the rear 3fi 22b of the button 22 and the engagement surface 24 is released to allow rotation to the lock position. is being used. The other configurations are the same as in the first embodiment. Further, the other functions are the same as those of the first embodiment except that the button 22 must be pressed when rotating from the ACC position to the lock position.

(Effects of the Invention) Since the present invention is constructed as described above, a mechanism that prevents the steering shaft from being locked until the key is removed can be achieved using only the key lever and lock plate housed in the cylinder lock inner cylinder. As a result, the number of parts can be reduced and the body can be made smaller, which has the excellent effect of providing an inexpensive steering lock device for a vehicle.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a vehicle steering lock device according to the present invention, FIG. 2 is a cross-sectional view along line r'-1 in FIG. 1, FIG. 3 is a cross-sectional view along ■--■ in FIG. 1, and FIG. is a cross-sectional view taken along line mm in FIG. 1, FIG. 5 is a cross-sectional view taken along line IV-IV in FIG. A
10 is an exploded perspective view of the rotor and its surroundings, 1) is a front view of the cylinder lock, 12 is a perspective view showing another embodiment of the rotor, and 13 is another embodiment of the lock plate. FIG. 14 is a sectional view showing another embodiment of the lock plate and key lever, FIG. 15 is a cross-sectional plan view of the vehicle steering lock device according to the present invention, and FIG. 16 is the same as that of FIG. 15. BB sectional view, FIG. 17 is an exploded perspective view of the button and its surroundings, FIG. 18 is an explanatory diagram of its operation, FIG. 19 is a cross-sectional plan view of the vehicle steering lock device according to the present invention, and FIG. 21 is an exploded perspective view of the area around the button. 1...Body 3...Rotor 4...
...Joint 5...Spring 6...
Cam surface 7... Engaging protrusion 8... Key
9...Key insertion hole 10...Key lever 10a...Engaging protrusion 1)...Hole
12...Insertion hole 13...Lock plate 13a...Engagement hole 16...Lock pin

Claims (5)

[Claims] (1) When the key is removed from the lock position, the locking member protrudes from the lock body and locks the steering shaft unrotatably, while the key is inserted to rotate the cylinder lock inner cylinder toward the on position. In the steering lock device for a vehicle, the locking member retreats to allow rotation of the steering shaft when the locking member is rotated, and the cylinder lock inner cylinder is movable relative to the rotor in the axial direction and in the rotational direction. A joint is provided integrally with the rotor and is urged in a direction away from the rotor via a spring, and a key lever is provided in the rotor to sense insertion and removal of the key and displace it in the radial direction. ,
A lock plate is provided whose rear end is connected to the joint and whose front end is engageable with the key lever, and when the rotor is rotated from the lock position to the ACC position by operating the key, the joint is connected to the spring. While moving forward against the biasing force, the key lever engages with the lock plate to hold the joint at a position axially offset from the key insertion position, while operating the key to lock the rotor from the ACC position. When the key is removed after being rotated to the position, the key lever sinks into the rotor due to the biasing force of the spring, and the engagement between the key lever and the lock plate is released, and the joint is moved by the biasing force of the spring to remove the key. A steering lock device for a vehicle, characterized in that when the locking member returns to the inserted position, the locking member protrudes from the lock body and locks the steering shaft unrotatably. (2) The steering lock device for a vehicle according to claim (1), wherein the lock plate is formed of a plate spring, and an engagement hole that can be engaged with a key lever is provided at a front end of the lock plate. (3) Only the front end of the lock plate is made of an elastic material,
2. The vehicle steering lock device according to claim 1, wherein the elastic body portion has an engagement hole that can be engaged with a key lever. (4) While forming an engagement hole in the front end of the lock plate, insert an engagement pin into the tip of the key lever while being biased in the protruding direction by a spring, and insert the engagement pin into the engagement hole of the lock plate. The vehicle steering lock device according to claim 1, wherein the steering lock device is adapted to be engaged with the steering lock device. (5) While the joint is provided with an engagement surface, a rod-shaped button is built into the lock body with one end protruding outward, and the other end is biased toward the joint, and the AC
At the C position, the other end of the button is engaged with the engagement surface to prevent it from rotating to the lock position, and the other end of the button is displaced by the button pushing operation, thereby causing the other end of the button to engage with the engagement surface. The vehicle steering lock device according to claim 1, wherein the vehicle steering lock device is configured to allow rotation to the lock position by releasing the engagement with the steering lock device.