JPH0775962B2 - Steering lock device safety device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an ignition switch device for an automobile, in which the cylinder lock cannot be rotated midway when the cylinder lock is returned to the locked position, and another operation is added. The present invention relates to a safety device of a steering lock device that can be rotated by a.

<Prior Art> In order to prevent accidental locking of the steering shaft during driving, a safety device in which the rotation is prevented even if the key is simply returned and rotated in the locking position direction is well known. An example of the structure is introduced in Kosho 56-10593.

In the steering lock device disclosed in the above publication, the contact portion of the lock lever arranged on the outer circumference of the cylinder lock is locked to the step portion formed on the outer surface of the cylinder inner to prevent the return rotation. By pulling the operation knob projecting to the outside and raising the contact portion, the locking is released and it is possible to turn back.

As a similar safety device, there is also known a structure in which the rotation prevention is released by moving the cylinder inner in the axial direction at the position where the return rotation is prevented (for example, the actual opening 57).
-127046, see Jitsukai Sho 56-60661, etc.).

<Problems to be Solved by the Invention> In the former case of the above-mentioned conventional technique, since the unlocking operation is performed in the radial direction, the movement during the unlocking operation becomes large despite the large outer dimension in the radial direction. There is a problem that the amount is small and there is a certain limit to increase the certainty of the operation.

Further, in the latter case, since the releasing operation is performed in the axial direction, there is a problem that the outer dimension in the axial direction becomes large.

It is also known that an elliptical ring is provided on the outer peripheral portion of the key cylinder, which is pushed in the axial direction and expanded outward to release the engagement and return the rotation (for example, the actual opening). 52-108740), the elliptical ring is required to have flexibility and durability, so that there are many restrictions when selecting a material, and an extra space corresponding to deformation is required.

The present invention solves such a problem, and provides a safety device of a steering lock device that is relatively small, has a large movement amount at the time of a release operation, is reliable in operation, and has a long life, at low cost. It was made for the purpose.

<Means for Solving Problems> In order to achieve the above-mentioned object, the present invention is swingably supported by a support shaft which is arranged on the outer peripheral portion of the cylinder lock and is orthogonal to the axis of the cylinder lock. And a first locking portion formed on a stop plate that is biased in one direction by a turning force, a first locking portion formed on the stop plate, and a rotating member that rotates in conjunction with a cylinder lock. And a release member for releasing the engagement between the first locking portion and the second locking portion by swinging the stop plate against the biasing force. The first locking portion and the second locking portion are formed in such a shape that the first locking portion can ride over the second locking portion when the cylinder lock is rotated in the ON position direction. A shape in which the first locking portion and the second locking portion are locked to each other when the lock is returned and rotated in the locking position direction. It is characterized by being configured in.

<Operation> Since the device is configured as described above, in the device of the present invention, the first locking portion can move over the second locking portion or can be released when the locking with the second locking portion is released. 1 The movement of the locking part is
The direction is parallel to the axis of the cylinder lock, and the space around the cylinder lock, which is relatively large due to the structure around the cylinder lock, is effectively utilized, and the outer dimensions in the radial direction are not increased so much that the first locking part The movement can be increased. Further, since the stop plate itself does not deform but only swings, there is no damage due to fatigue of the material, and a highly reliable device can be obtained.

<Example> Next, the illustrated example will be specifically described.

First, the outline of the steering lock device will be described with reference to FIG. In the figure, (1) is a cylinder inner having a lock hole, and (2) is a cylinder outer for rotatably holding the cylinder inner (1), which is well known for the cylinder inner (1) and the cylinder outer (2). A cylinder lock (3) is constructed. Reference numeral (4) is a cam member connected to the cylinder inner (1), and the cam member (4) is rotated together by inserting a key into the cylinder inner (1) and rotating the key, and the cam member (4) is provided coaxially. A predetermined switch operation is performed by rotating a rotor (not shown) in the ignition switch section (5) thus obtained. (6) is a housing of the steering lock device that houses the above-mentioned members.

(7) is a mounting frame portion for mounting the housing (6) on the steering column, and (8) is an engaging member supported by the housing (6) so as to project into the mounting frame portion (7). The coupling member (8) is configured to project into the mounting frame portion (7) according to the rotation of the cam member (4) at the key insertable / removable position so that the steering shaft is locked.

A holding groove (9) is provided on one side of the cylinder outer (2) along the axial direction of the cylinder lock (3) to accommodate the lock link (10), and a movable support in the shaft groove (11) is provided. Axis (12)
Rockably supported by a lock link (10)
Has a key sensing end (10a) at one end contacting a key sensing member (not shown) of the cylinder inner (1) and a locking end (10
When the key is inserted into the cylinder inner (1), the key sensing end (10a) is pushed up against the spring (13) so that the key (b) can come into contact with the engaging member (8). With the rotation of the engaging member (8), the engaging member (8) is pulled into the housing (6), and the engaging end (10b) engages with the engaging groove (8a) of the engaging member (8). The lock is released and the unlocked state is maintained.

(15) is a stop plate of the safety device according to the present invention, and the stop plate (15) and members related thereto will be described below.

The stop plate (15) has a substantially semi-circular shape, and a rotation preventing projection (16) serving as a first locking portion projects from the inner edge of the central portion toward the center of the circle, and the cylinder lock (3). Is provided on the outer periphery of the cam member (4) by a support shaft (17a) (17b) provided so as to be orthogonal to the shaft center of the shaft, and is swingably supported. A turning force is biased by a biasing spring (19) in a direction of sliding contact with a notch recess (18) provided on the peripheral edge of the end face (4). Corresponding to the rotation preventing projection (16), the notch recess (18) has an inclined portion (20a).
A locking portion (20) composed of a step portion (20b) and a step portion (20b) is projected as a second locking portion, and the inclined portion (20a) is directed toward the turning side in the ON position direction and the step portion (20b). ) Are respectively formed toward the return rotation side in the lock position direction.

One support shaft (17b) of the stop plate (15) is supported by the housing (6) so that it can rotate together with the stop plate (15), and the support shaft (17b) has a release lever (2).
1) is attached, and the release lever (21) is biased by the return spring (22) in the same direction as the biasing spring (19). An operation wire (23) is connected to the end portion (21a) of the release lever (21), and the other end of the operation wire (23) is led to an appropriate place outside the housing (6) to operate an operation knob or the like. It can be installed and operated by the key operator. (24) and (25) are washers and E for mounting
It's a ring.

This embodiment is configured as described above and operates as follows.

Now, when a key (not shown) is inserted into the cylinder inner (1) and rotated in the ON position direction (clockwise direction in FIG. 1),
The cam member (4) rotates together, the rotation preventing projection (16) hits the locking portion (20), and the rotation preventing projection (16) is pushed by the action of the inclined portion (20a) to stop the stop plate. (15) swings against the biasing spring (19), and the rotation prevention protrusion (16) rides over the locking portion (20). Therefore, the cylinder inner (1) can be rotated in the ON position direction without any trouble, and the engine can be started and put into an operating state.

From this state, when the engine is stopped and the key is removed, the cylinder inner (1) is returned and rotated in the lock position direction (counterclockwise direction in FIG. 1) in which the key can be inserted and removed, and the cam member (4) is rotated. Rotate together and the rotation prevention protrusion (16) engages with the locking part (2
The stepped portion (20b) of (0) is abutted against each other and cannot be returned and rotated further. FIG. 5 (a) shows the state at this time. When the operation wire (23) is pushed to rotate the release lever (21) counterclockwise in FIG. 4, the stop plate (15) also swings in the same direction against the biasing spring (19). Then, as shown in FIG. 5 (b), the locking of the rotation preventing projection (16) and the locking portion (20) is released, and the cam member (4), that is, the cylinder lock (3) is locked. It will be possible to rotate back up to.

In this way, unless the release lever (21) is consciously released, the return rotation to the lock position is blocked on the way, so carelessly return to the lock position and rotate the steering wheel while traveling. The mistakes that would cause them are prevented in advance. The shape of each member is selected so that the rotation blocking protrusion (16) and the locking portion (20) are locked at the ON position and the lock position, for example, at the ACC position.

As shown in FIG. 4, the support shaft (17b) has a protrusion (17c).
Has a keyhole-shaped cross section, whereas the hole (21b) of the release lever (21) has a wider notch (21c) than the protrusion (17c), Since the release lever (21) is attached to the support shaft (17b) with play on the
When the rotation preventing projection (16) passes over the locking portion (20) during the rotation in the above-mentioned ON position direction, the operation wire (23)
The stop plate (15) can be rocked without moving, and can be rotated with a small key operation force. Further, the release lever (21) may be used at a position opposite to the solid line as shown by the broken line in FIG. 4, and the locking may be released by pulling the operation wire (23). The other end of the operation wire (23) may be connected to, for example, a side brake lever so that the wire (23) is automatically pushed or pulled by a side brake operation during parking.

FIG. 6 shows an embodiment in which a dial type knob (26) is used as a release member instead of the release lever (21), and the return spring (22) and the operation wire (23) are not used, The biasing spring (19) also serves as the return spring (22). That is, in the above-described embodiment, even if the operating portion of the operating wire (23) is accidentally touched by the hand, the wire (23) may be pushed and pulled to release the return rotation prevention. On the other hand, in this embodiment, the knob (26) is directly pinched and rotated, and a conscious operation of pinching the knob (26) is required for the release operation, and there is a possibility that the release operation is accidentally performed. It can be lost.

<Effects of the Invention> As is apparent from the description of the above embodiments, the present invention is
The first locking portion of the stop plate, which is swingably supported by a support shaft that is orthogonal to the axis of the cylinder lock, and the second locking portion of the rotating member, which is provided corresponding to the first locking portion, return and rotate. Since the blocking is performed and the first locking portion is moved in the axial direction of the cylinder lock, the space in the axial direction of the cylinder lock can be effectively used, and the radial direction of the steering lock device and Therefore, it is possible to obtain a safety device in which the movement amount of the first locking portion during the releasing operation is large and the operation is highly reliable without increasing the outer dimension in the axial direction. In addition, since the stop plate does not deform and only swings, it does not need flexibility and is not damaged by fatigue, so there are very few restrictions when selecting materials, and a device with low cost and long life can be obtained. Will be easier.

[Brief description of drawings]

1 is a sectional view taken along the line AA of FIG. 2, FIG. 2 is a partially cutaway side view of an embodiment of the present invention, and FIG. 3 is a sectional view of a main part as viewed from the direction B of FIG. FIGS. 4 and 5 are front views showing the relationship between the release lever and the support shaft, FIGS. 5 (a) and 5 (b) are operation explanatory views, and FIG. 6 is a sectional view of the essential parts of another embodiment. is there. (3) ... Cylinder lock, (4) ... Cam member (rotating member), (15) ... Stop plate, (16) ... Rotation preventing projection (first locking portion), (17a) (17b) …… Spindle, (1
9) …… biasing spring, (20) …… locking part (second locking part),
(21) and (26) …… Release lever and knob (release member).

Claims (1)

[Claims] 1. A stop plate disposed on the outer peripheral portion of a cylinder lock, swingably supported by a support shaft in a direction orthogonal to the axis of the cylinder lock, and biased by a turning force in one direction, A first locking part formed on the stop plate; a second locking part formed on a rotating member that rotates in conjunction with the cylinder lock and engageable with the first locking part; A releasing member for releasing the engagement between the first locking portion and the second locking portion by swinging the plate against the biasing force, and the first locking portion and the second engaging member. The stop portion is formed in such a shape that the first locking portion can ride over the second locking portion when the cylinder lock is rotated in the ON position direction, and the first locking portion is formed when the cylinder lock is returned and rotated in the lock position direction. The locking portion and the second locking portion are configured to be locked with each other. Safety device for tearing lock device.