JPH01250577A - Steering lock device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a locking device, particularly a steering locking device for controlling the rotation of a steering shaft of an automobile.

Conventional technology Current self 11! lJste is 1, for example, time opening 11 (161-
As shown in Japanese Patent No. 295154, a steering lock is used that simultaneously controls a steering link shaft and an ignition switch of an automobile. This steering lock includes a key cylinder that is housed in a frame and is rotated by a key between a locked position and an unlocked position, a cam that is rotated together with the key cylinder, and a locking position that engages with a steering link shaft. The locking rod includes a locking rod that is moved by a cam and a spring between an unlocked position 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", rOFF position", "ACC position", engine FON position", rs that operates the starter motor
TART position" can be sequentially rotated to each position.

11. When the key is removed in the "OCK position," the key cylinder cannot rotate, prohibiting the ignition switch from operating, and the locking rod engages the steering link shaft, preventing the steering link shaft from rotating to prevent theft. There is.

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 bin that is slidably disposed within the key cylinder, a second bin that detects movement of the first bin, and a microcontroller that is switched on and off by movement of the second bin. It has a switch. These parts are built into the steering lock device or attached to the outside.

[1] However, in the conventional steering lock device, the key detection device is provided on the side of the key cylinder housed inside, which increases the number of parts and makes it difficult to manufacture the steering lock device. There is a drawback that additional steps such as arranging conductive wires connected to the microswitch are required in the process. In this regard, a steering lock device has been proposed in which the key cylinder moves inward in the length direction and the insertion of the key is detected by an ignition switch device built into the steering lock device. However, with this structure, when the key is inserted, it must be moved inside with a large movement stroke of the key cylinder! FIJ is required.

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 provide a steering lock device in which the key cylinder moves in the longitudinal direction when the key is released, thereby detecting the insertion of the key.

Way 4) The steering lock device of this invention has a casing,
a key cylinder rotatably and axially movably disposed in the casing by a key; a cover fixed to the casing at the front of the key cylinder; and a cover rotatably mounted to the front of the key cylinder and the key cylinder A key detection lever that rotates when a key is inserted into the cover and applies a reaction force to the cover to move the key cylinder inward, and a key detection lever that is placed adjacent to the key detection lever between the cover and the key cylinder. It is composed of a sword and a dobrate.

y□--c[ When the key is inserted into the steering lock device, the key engages with 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 cover via the blade 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 card plate.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 8.

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 sink case 12.
It has a cover 13 fixed to the front part. A key cylinder 16 having a flange portion 15 is rotatably disposed within a hole 14 formed in the casing 11 . 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.

A locking rod 20 is attached to the housing case 12 so as to be slidable in the longitudinal direction, and a hook 22 is attached to a hole 21 formed in the flange portion 15 of the key cylinder 16 so as to be slidable in the radial direction. Moreover, the locking rod 18 is
It is attached so that it can move forward and backward through the hole 19 of the casing 11.

However, since these locking rod 20 and check lever 22 have the same structure and function as the check lever and check lever disclosed in Japanese Patent Publication No. 60-42055, detailed explanation will be omitted. The inner end 17 of the key cylinder 16 is rotatably mounted within the casing 11 and in a hole 24 of a pivot member 23 disposed coaxially with the key cylinder 16 . Also,
The key cylinder 16 is fitted into the hole 24 of the rotating member 23 and fixed by a pin 25. The rotating member 23 has a rear end 23a that operates a key detection switch built into the ignition switch device.

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. The slot 30 has 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. Horizontal slot 31
Generally V-shaped radial walls 36 and 37 are formed inside. Further, an inclined surface 38 is formed at the front portion 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 30. The key detection lever 33 has a lever body 34 that is substantially L-shaped with a rectangular cross section, and a pair of bins 35 that protrude 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 bottle 35 to the other end 34b is longer than the length from the bottle 35 to the one end 34a. Therefore, in this invention, when the key detection lever 33 rotates around the bin 35, the key
A large movement stroke of the cylinder 16 can be obtained. In any case, the length from the bottle 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 bin 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 circular cross-section of the bottle 35. Therefore,
When the key detection lever 33 is installed in the slot 30, the lever main body 34 is arranged in the horizontal slot 32 so that aSS is possible with the bin 35 arranged in the vertical slot 32 as the center. i11 on the inner wall of cover 13! A circular recess 4 into which a half-moon-shaped guard plate 40 made of quality metal is attached.
1 is provided. 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.

Further, as shown in FIGS. 2 and 8, the cover 13 has a rectangular hole 44 into which the protrusion 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. It is formed. Furthermore, a bezel 45 made of synthetic wood 11nH is rotatably attached to the outside of the cover 13. The bezel 45 has a central through hole 46 and a recess 47 formed on the inner surface. When the key cylinder 16 is in the forward position, the protrusion 39 of the key cylinder 16 is inserted into the recess 47 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 portion 50 of the locking rod 20 abuts against a cam 51 formed on the flange portion 15 of the key cylinder 16 . The rear end portion 58 of the locking rod 20 is connected to the casing 11
It is placed in a hole 27 formed in the hole 27 .

As shown in FIG. 7, the cam 51 includes a flat portion 52 formed in front of the hole 21 into which the dowel 22 is fitted, an inclined portion 53 communicating with the flat portion 52, and an end portion of the inclined portion 53. a lower part 55 formed below the PI difference part 54, a rising part 56 formed in the lower part 55 adjacent to the hole 21, and a rising part 56 passing above the hole 2. and flat part 52
It has a return part 57 that connects with. The return portion 57 is formed outside the dowel 22 in the radial direction. Locking rod 20
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 into 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 suppresses the locking rod 20 inward in the radial direction 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 a recess 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 Doc 22.

The key cylinder 16 is extracted into the housing sink case 12. Subsequently, the key detection lever 33 is installed in the slot 30 of the flange portion 15 of the key cylinder 16, and the guard plate 40 is installed in the circular recess 41 of the cover 13, and then the housing case 12 is placed inside the casing 11. The cover 13 is attached to the casing 11 using 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 protrusion 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 cannot be rotated.

Steering lock table filo configured as above
When the key 28 is inserted into the key groove 26 of the key cylinder 16, one end 34 of the lever body 34 of the key detection lever 33
The tip of the key 28 comes into contact with a. Therefore, the key detection lever 33 is rotated counterclockwise in FIG. 2, and the other end 34b of the lever body 34 suppresses 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 is detected and the 8-33 is rotated.

At this time, the rear end 23a of the rotating member 23 switches the key detection switch built into the ignition switch device to generate a key detection signal.6 At the same time, the protrusion 39 of the key cylinder 16 switches the key detection switch built into the ignition switch device to generate a key detection signal. and removed from the hole 44 of the cover 13. 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 rLOCK position V4 toward 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 50 moves relatively along the inclined portion 53 and the spring 59
is moved backward against the elasticity of At this time, the locking rod 18 is moved to an unlocked position away from the groove of the steering link shaft by a cam (not shown) formed on the rotating member 23, and the rear end 58 is connected to a notch 60 formed in the locking rod 18. inserted within.

When the rear end portion 58 of the locking rod is inserted into the notch portion 60 to a sufficient length, the front end portion 50 is radially moved from the stepped portion 54 of the cam 51 to the lower portion 55 due to the suppressing force of the spring 63 and the ball 64. direction to move inward. Further turn the key 28 to move the ignition switch device to the ACC position I.
It can be rotated to the "ON position" and the "I START position".

When the key 28 is turned from the ``1ON'' position to the ``I'LOCK'' position, the front end 50 moves to the raised portion 56 of the lower portion 55. However, the key 28 is not connected to the keyway 26 of the key cylinder 16.
Since the dowel 22 is inserted inside, the dowel 22 protrudes radially outward, and the front end portion 50 abuts the inner surface 22a of the dowel 22. Therefore, the key 28 is inserted into the keyway 26 of the key cylinder 16.
Since the rear end 58 of the locking rod 20 is inserted into the notch 60 of the locking rod 18, the locking rod 18 is held in the unlocked state until the locking rod 20 is pulled out. r
When the key 28 is pulled out from the key groove 26 of the key cylinder 16 at the LOcK position, the locking rod 22 is moved radially inward, and the locking rod 20 is returned to the flat portion 52 through the return portion 57 by the spring 59. It will be done. 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. Therefore, a key detection switch within the ignition switch device detects removal of the key 28.

As mentioned above, the key 28 is connected to the steering lock device f!
10, the key 28 is inserted into the key detection lever 33.
and rotates the key detection lever 33. Therefore, the other end of the key detection lever 33 is connected to the guard plate 40.
key cylinder 1 while applying reaction force to cover 13 via
6 inward to activate the key detection switch in the ignition switch device. When the key 2B is rotated together with the key cylinder 16, the key cylinder 16 rotates together with the key detection lever 33 and the guard plate 40, and the other end of the key detection lever 33 is always in contact with 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, instead of the spring 59 that suppresses 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 may be provided between the key cylinder 16 and the housing case 12. You can.

Effects of the Invention As described above, in this invention, since the key detection/<' - is used, the key cylinder can be moved with a large movement stroke by inserting the key. The switch can be operated reliably.

[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 A, FIG. 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. 7 is a perspective view of the flange portion of the key cylinder, and FIG. 8 is a sectional view taken along line CC in FIG. 1. 100. Steering lock device, 11. . casing, 130. Cover, 16. , key cylinder, 33. , key detection lever, 40. . Guard plate, Figure 1, Figure 2, Figure 6, Figure 7 18□ Payment procedure amendment May 17, 1999

Claims (1)

[Claims] a casing, a key cylinder rotatably and axially movably disposed within the casing by a key, and a cover fixed to the casing at the front of the key cylinder;
A key detection lever is rotatably attached to the front of the key cylinder and rotates when a key is inserted into the key cylinder, applying a reaction force against the cover to move the key cylinder inward. A steering lock device comprising a guard plate adjacently arranged between a cover and a key cylinder.