JPH023561A - Steering locking device - Google Patents

Abstract

PURPOSE:To make a key detection switch in an ignition switch device surely operational by letting a key detection lever turn on the insertion of a key into a key cylinder and making, with its reaction, to move the key cylinder with a large moving stroke. CONSTITUTION:When a key 28 is inserted into a key groove 26 of a key cylinder 16 of a steering locking device 10, the tip of the key 28 abuts on the inner end of a key detection lever 33 to turn the lever 33 and the outer end of the lever 33 is pressed against the inner face of a cover 13. The key detection lever 33 therefore shifts the key cylinder 16 inward while exerting reaction on the cover 13 through a guard plate 40. At that time, a key detection switch in a ignition switch device is operated by the rear end 23b of a turning member 23. At the same time, a projection 39 of the key cylinder 16 comes off from the recess 47 of a bezel 45 and the hole 44 of the cover 13 so that the key 28, the key cylinder 16 and the bezel 45 are turned in one body.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a locking device, and particularly to a steering locking device for controlling the rotation of a steering shaft of an automobile.

Current automobiles use a steering lock that simultaneously controls the steering shaft and ignition switch of the automobile, as shown in, for example, Japanese Unexamined Patent Publication No. 61-295154. This steering lock includes a key cylinder housed in a frame and rotated by a key between a locked position and an unlocked position, a cam rotated together with the key cylinder, and a locked position that engages a steering shaft. It has a locking rod that is moved between an unlocked position and an unlocked position by a cam and a spring, and an ignition switch that is operatively connected to the rear of the cam.

When the key is inserted into the key cylinder and rotated, the key is r
LOcK position J, rOFF position”, “ACC position”, engine rON position”, rS that operates the starter motor
It is possible to rotate Mft degrees to each position of "TART position". When the key is removed at the rLOcK position, the key cylinder cannot rotate, prohibiting the ignition switch from operating, and the locking rod engages the steering shaft, preventing rotation of the steering shaft to prevent theft.

Furthermore, conventionally, a steering lock device is provided with a key detection device that detects insertion of a key when the key is inserted into a key cylinder. The key detection device includes a first pin slidably disposed within the key cylinder, a second pin that detects movement of the first pin, and a microswitch that is switched by movement of the second pin. These parts are built into the steering lock device or attached to the outside.

The lesson that I am trying to solve However, with the conventional steering lock device.

Since the key detection device is provided on the side of the key cylinder housed inside, the number of parts increases and additional steps such as installing conductor wires connected to the microswitch are required in the manufacturing process of the steering lock device. The disadvantage was that it increased. In this regard.

A steering lock device has been proposed in which a key cylinder moves inward in the length direction and an ignition switch device built into the steering lock device detects insertion of a key. However, this structure requires that the key cylinder move inward with a large movement stroke when the key is inserted. For this reason, no practical steering lock device has been proposed.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks and to provide a steering lock device in which the key cylinder moves in the length direction when the key is inserted, thereby detecting the insertion of the key.

The steering lock device of the present invention for adjusting the angle of 11° includes a casing,
a key cylinder which is rotatably and axially movably disposed within the casing by a key; The device includes a key detection lever that moves the key cylinder inward by applying a reaction force to the wall, and a guard play 1 disposed adjacent to the key detection lever between the front wall of the casing and the key cylinder.

The front wall of the casing is a rim portion formed integrally with the casing or a cover fixed to the casing. The guard plate is the front wall of the casing.

It is rotatably arranged between the housing case or the receiving surface of the casing.

When the driving key is inserted into the steering lock device, the key engages one end of the key detection lever and rotates the key detection lever. Therefore, the other end of the key detection lever moves the key cylinder inward while applying a reaction force to the front wall of the casing via the guard plate, thereby operating the key detection switch in the ignition switch device. When the key is rotated together with the key cylinder, the key cylinder rotates together with the key detection lever and the guard plate, and the other end of the key detection lever is always in contact with the guard plate.

u Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 11.

As shown in FIG. 1, a steering lock device 10 of the present invention includes a casing 11, a housing case 12 disposed inside the casing 11, and a housing case 12.
The cover 13 is fixed to the front part of the casing 11 and serves as the front wall 11a of the casing 11. A key cylinder 16 having a flange portion 15 is rotatably disposed within a hole 14 formed in the housing case 12 . Although not shown in detail, a plurality of tumbler holes are formed in the key cylinder 16, and each tumbler hole is fitted with a tumbler in a known manner.

As shown in FIG. 2, a locking rod 20 is attached to the housing case 12 so as to be slidable in the longitudinal direction, and a dog 22 is installed in the hole 21 formed in the flange portion 15 of the key cylinder 16 in the radial direction. Slidably mounted. Further, the locking rod 18 is attached to be movable forward and backward from the hole 19 of the casing 11. However, these locking rods 20
Since the check lever and dog 22 have the same structure and function as the check lever and dog disclosed in Japanese Patent Publication No. 60-42055, a detailed description thereof will be omitted. The inner end 17 of the key cylinder 16 is connected to a hole 24 of a rotating member 23 which is rotatably disposed within the casing 11 and coaxially with the key cylinder 16.
will be installed on the Further, the key cylinder 16 is connected to a rotating member 23.
It is fitted into the hole 24 of and fixed by a pin 25.

The rotating member 23 is a rear end portion 2 that operates a key detection switch (not shown) built in the ignition switch device.
It has 3a.

As shown in FIG. 5, the flange portion 1 of the key cylinder 16
5 is formed with a slot 30 communicating with and perpendicular to the keyway 26 into which a key 28 (FIG. 6) is inserted. As clearly shown in FIG. 5, the slot 30 includes a horizontal slot 31 extending in the radial direction of the key cylinder 16, and a vertical slot 32 formed perpendicular to the horizontal slot 31 and parallel to the keyway 26.
and has. Inside the transverse slot 31, approximately 7-shaped radial grooves 81, 36 and 37 (FIG. 2) are formed.

Furthermore, a cutout surface 38 is formed in the front part of the housing case 12. Further, the key cylinder 16 is formed with a protrusion 39 that protrudes forward from the front surface.

A key detection lever 33 is attached to the slot 3o. The key detection lever 33 has a lever body 34 having a substantially L-shape with a rectangular cross section, and a pair of pins 35 protruding from the lever body 34 at right angles. Lever body 3 of key detection lever 33
4 has one end 34a and the other end 34b. The length from the pin 35 to the other end, 34b, is greater than the length from the pin 35 to the one end, 34a. Therefore, in this embodiment, when the key detection lever 33 rotates around the pin 35, a large movement stroke of the key cylinder 16 can be obtained. In any case, the length from the pin 35 to the one end 34a and the other end 34b can be set arbitrarily in terms of design.

When the key detection lever 33 is installed in the slot 30, the lever body 34 is placed in the horizontal slot 31, and the pin 35
is located within the vertical slot 32.

Although not shown in detail, the vertical slot 32 has a semi-cylindrical shape complementary to the pin 35 having a circular cross section. Therefore,
When the key detection lever 33 is installed in the slot 30, the lever body 34 is swingably arranged in the horizontal slot 32 about the pin 35 arranged in the vertical slot 32.

The inner wall of the cover 13 is provided with a circular recess 41 into which a half-moon-shaped guard plate 40 made of hard metal is mounted. The guard plate 40 has a hole 42 formed therein, and functions to prevent a tool from entering when the tool is illegally inserted into the keyway 26 of the key cylinder 16. In the example shown in FIGS. 1 and 2, the guard plate 40 is installed between the cover 13 and the housing case 12. This is because the housing case 12 is fixed to the casing 11.

The guard plate 40 cannot move in the axial direction and can only rotate. However, in this case guard play [
・Cover 13 and key cylinder 16 by reducing the diameter of 40
It is also possible to arrange a guard plate 40 between them. Since the key detection lever 33 rotates when the key 28 is inserted into the key groove 26 of the key cylinder 16, the guard plate 40 does not move in the axial direction even if it is not fixed in the axial direction by the housing case 12.

Further, as shown in FIGS. 2 and 8, the cover 13 has a rectangular hole 44 into which the protrusion 39 of the key cylinder 16 is fitted when the key 28 is not inserted into the key cylinder 16 and the key cylinder 16 is in the forward position. is formed.

Furthermore, a bezel 45 made of synthetic resin is rotatably attached to the outside of the cover 13. The bezel 45 has a central through hole 4.
6 and a recess 47 formed on the inner surface. Recess 47
When the key cylinder 16 is in the forward position, the protrusion 39 of the key cylinder 16 is inserted to prevent the bezel 45 from rotating.

A locking rod 20 disposed within the housing case 12 extends rearward along the length of the key cylinder 16 and the rotating member 23 . The front end 50 of the locking rod 2° comes into contact with a cam 51 (FIG. 7) formed on the flange 15 of the key cylinder 16.

The rear end 58 of the locking rod 20 is placed within the hole 27 formed in the casing 11 .

As shown in FIG. 7, the cam 51 has a flat portion 52 formed in front of the hole 21 into which the dog 22 is fitted.

An inclined part 53 communicating with the flat part 52, a stepped part 5/l formed at the end of the inclined part 53, a lower part 55 formed below one step part 54, and a lower part adjacent to the hole 21. 55 and the rising portion 5 passing above the hole 21.
6 and a return portion 57 that connects the flat portion 52. The return portion 57 is formed outside the dog 22 in the radial direction.

When the front end 50 of the locking rod 20 abuts against the inclined portion 53 and is moved rearward, the rear end 58 of the locking rod 20 enters a notch 60 formed in the locking rod 18 .

As shown in FIG. 2, the housing case 12 is provided with a hole 62 formed in the radial direction, and a spring 63 and a metal ball 64 are disposed within the hole 62. Since the ball 64 presses the locking rod 20 radially inward by the spring 63, the front end 50 of the locking rod 20 is always pressed against the cam 5.
1.

Further, a spring 59 is wound around the locking rod 20 between the stepped portion 58 provided on the locking rod 20 and the casing 11. Therefore, the locking rod 20 and the key cylinder 1
6 is always urged forward by a spring 59.

An ignition switch device (not shown) is installed in the four parts 65 formed at the rear of the casing 11.

When assembling the steering lock device 10 according to the present invention, the key cylinder 16 is fixed by the rotating member 23 and the pin 25. Next, the locking rod 20 is attached to the key cylinder 16.
And after installing Dog 22.

Insert the key cylinder 16 into the housing case 12. After installing the key detection lever 33 in the slot 30 of the flange portion 15 of the key cylinder 16 and installing the guard plate 40 in the circular recess 41 of the cover 13, the housing case 12 is placed inside the casing 11 and the cover is closed. 13 is attached to the casing 11 with a pin (not shown).

Further, an ignition switch including a key detection switch is installed in the recess 65 of the casing 11. In the assembled state, the projection 39 of the key cylinder 16 passes through the hole 44 of the cover 13 and extends into the recess 47 of the bezel 45, so the bezel 45 alone cannot be rotated.

When the key 28 is inserted into the key groove 26 of the key cylinder 16 of the steering lock device 10 configured as described above, one end 34a of the lever body 34 of the key detection lever 33 is inserted.
The tip of the key 28 comes into contact with. Therefore, the key detection lever 33 is rotated counterclockwise in FIG.
4 presses the inner surface of the cover 13. Therefore, as shown in FIG. 6, the key cylinder 16 is moved to the inner position while the key detection lever 33 is rotated.

At this time, the rear end 23a of the rotating member 23 switches a key detection switch built in the ignition switch device to generate a key detection signal. At the same time, the protrusion 39 of the key cylinder 16 is connected to the recess 47 of the bezel 45 and the cover 13.
from the hole 44.

Therefore, the key 28, key cylinder 16, and bezel 45 can be rotated together.

Next, when the key 28 is rotated together with the key cylinder 16 from the "LOCK position" to the "rOFF position", the front end 50 of the locking rod 20 moves from the flat part 52 of the cam 51 to the inclined part 53. Further, when the key 28 is rotated, the front end portion 50 is relatively moved rearward along the inclined portion 53 against the elasticity of the spring 59. At this time, the rotating member 2
The locking rod 18 is moved to an unlocked position away from a groove (not shown) in the steering shaft by a cam (not shown) formed at 3, and the rear end 58 is inserted into a notch 60 formed in the locking rod 18. inserted. When the rear end 58 of the locking rod is inserted into the notch 6o to a sufficient length, the front end 50 is connected to the spring 63 and the ball 6.
4, the cam 51 moves radially inward from the stepped portion 54 to the lower portion 55. Further turn the key 28 to move the ignition switch device to the rACC position.

It can be rotated to ``rON position'' and ``rSTART position''.

When the key 28 is turned from the "○N position" to the rLOcK position, the front end 5o moves to the raised part 5G of the lower part 55. However, since the key 28 is inserted into the keyway 26 of the key cylinder 16, the dog 22 protrudes radially outward, and the front end 50 abuts the inner surface 22a of the dog 22. Therefore, until the key 28 is removed from the keyway 26 of the key cylinder 16, the rear end 58 of the locking rod 20 is inserted into the notch 60 of the locking rod 18, so that the locking rod 18 is in the unlocked state. Retained. rLOc
When the key 28 is removed from the keyway 26 of the key cylinder 16 at the "K position", the dog 22 is moved radially inward, and the locking rod 20 is returned to the flat part 52 through the return part 57 by the spring 59. At the same time, the key cylinder 16 is moved by the spring 59 from the inner position shown in FIG. 6 to the outer position shown in FIG. For this reason.

A key detection switch within the ignition switch device detects removal of the key 28.

As mentioned above, the key 28 is inserted into the steering lock device 10.
When inserted, the key 28 engages one end of the key detection lever 33 and rotates the key detection lever 33. Therefore, the other end of the key detection lever 33 moves the key cylinder 16 inward while applying a reaction force to the cover 13 via the guard plate 4o, thereby activating the key detection switch in the ignition switch device. key 28 to key cylinder 16
When the key cylinder 16 rotates together with the key detection lever 33 and the guard plate 40, the other end of the key detection lever 33 always contacts the guide plate 40. Therefore, damage such as abrasion does not occur to the key detection lever 33, and the key 28 can be rotated smoothly.

The above embodiments of the invention can be modified. For example, as a second embodiment of the present invention, as shown in FIG. Form. The thin wall portion 73 of the cover 13 is fitted to the outside of the thin wall portion 71 of the casing 11, and the cut portion 7 of the cover 13 is fitted to the outside of the thin wall portion 71 of the casing 11.
2 is brought into contact with the front end of the thin wall portion 71 of the casing 11, an annular groove 74 is formed. By disposing the guard plate 4o in this annular groove 74, the guard plate 40 can be attached rotatably but immovably in the axial direction.

Next, as shown in FIG. 10 as a third embodiment of the present invention, a guard plate 4 is inserted into a circular recess 41 formed in the cover 13.
It is also possible to arrange the guard plate 40 rotatably and to prevent the guard plate 40 from moving in the axial direction by abutting the front end of the housing case 12 fixed to the casing 11.

Furthermore, as shown in FIG. 11, it is also possible to configure the front wall 11a of the casing 11 as a rim part 80 by die-casting or casting integrally with other parts without providing the cover 13. The shape of the casing 11 itself and the method of assembling the steering lock device 1o shown in FIG. 11 are disclosed in Japanese Patent Publication No. 42055/1983, so the explanation thereof will be omitted.

Further, instead of the spring 59 that presses the key cylinder 16 when the key 28 is inserted into the key cylinder 16, a suppressing member including another elastic member such as a spring is provided between the key cylinder 16 and the housing case 12. You can. In short, in this invention, when the key is inserted, the key detection lever attached to the key cylinder applies pressure to the front wall of the casing to move the key cylinder inward, and the other end of the key detection lever is always connected to the guard plate. This makes it possible to smoothly insert and rotate the key and prevent the other end of the key detection lever from being worn out.

As mentioned above, in this invention, since a key detection lever is used, the key cylinder can be moved with a large movement stroke by inserting the key, and the key detection switch built in the ignition switch device can be used. can operate reliably. Also.

Since the key cylinder rotates together with the key detection lever and the guard plate, and the other end of the key detection lever is always in contact with the guard plate, the key detection lever can be smoothly rotated without causing wear. Furthermore, the guard plate makes it possible to prevent unauthorized acts such as inserting a tool into the steering lock device and destroying the steering lock device. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the steering lock device of the present invention.
Figure 2 is a cross-sectional view along the length direction, Figure 3 is A-A in Figure 1.
4 is a sectional view taken along line B-B in FIG. 1, FIG. 5 is an exploded perspective view of the key cylinder, key detection lever, and guard plate, and FIG. 6 is a cross-sectional view taken along line A. 7 is a perspective view of the flange portion of the key cylinder, FIG. 8 is a sectional view taken along line C-C in FIG. 1, and FIG. 9 is a sectional view similar to FIG. , FIG. 10 is a partial sectional view of the front part of a steering lock device showing a second embodiment of the invention, and FIG. 10 is a partial sectional view of a third embodiment of the invention.
FIG. 11 is a partial sectional view of a fourth embodiment of the invention. 100. Steering lock device, 11. . casing, 130. Cover, 16. , key cylinder, 330. Key detection lever, 40. . Guard plate, Figure 1, Figure 2, Figure 2, Figure 1, Figure 2, Figure 2, Figure 1, Figure 1, Figure 10, Figure 11.

Claims (3)

[Claims] (1) A casing, a key cylinder arranged inside the casing so as to be rotatable and axially movable by a key, and when the key is rotatably attached to the front part of the key cylinder and the key is inserted into the key cylinder. a key detection lever that rotates and applies a reaction force against the front wall of the casing to move the key cylinder inward; a guard plate that is arranged adjacent to the key detection lever between the front wall of the casing and the key cylinder; A steering lock device characterized by being provided with. (2) The steering lock device according to claim (1), wherein the front wall of the casing is a rim portion formed integrally with the casing or a cover fixed to the casing. (3) The steering wheel according to claim (1), wherein the guard plate is rotatably disposed within an annular groove formed between the cover that constitutes the front wall of the casing and the housing case or the end of the casing. locking device.