KR950008149B1 - A steering column shaft locking device for an automotive vehicle - Google Patents

Abstract

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Description

Steering shaft lock of car

1 is a cross-sectional view of a steering shaft locking device of the present invention, the longitudinal cross section through the longitudinal center axis of the device.

2 is a cross-sectional view taken along a transverse cross section of the longitudinal center side of the apparatus.

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a cross-sectional view taken along the line B-B in FIG.

5 is an enlarged perspective view showing a lever supported between a key cylinder and a protective plate.

6 is a cross-sectional view of a state in which a key is inserted into a key cylinder of the apparatus shown in FIG.

7 is a perspective view of a flange portion of a key cylinder.

8 is a cross-sectional view taken along the line C-C in FIG.

9 is a view showing the front portion of the steering shaft locking device according to the second embodiment of the present invention.

10 is a sectional view of a third embodiment of the present invention.

11 is a schematic view of a fourth embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

10: steering shaft locking device 11: housing

11a: front wall of housing 12: sleeve

13: cover 15: flange

16: key cylinder 17: inner end of the key cylinder

18: lock rod 19: hole in the housing

20: retainer 21: radial hole

22: low gear 23: rotating machine

23a: rear end 24: hole

25: pin 26: key hole

28: key 29: spring

30: horizontal groove 31: side groove

32: cracked groove 33: lever

34: Lever body 34a: One end of the lever body

34b: other end of lever body 35: pin

36,37: radial wall 38: cutout surface

39: projection 40: shield

41: circular groove 42: opening

44 opening 45 bezel

46: through-hole of the bezel 45 47: groove

50: front end of the retainer 20 51: cam

52: flat part 53: inclined part

54: step portion 55: lower portion

56: projection 57: inversion

58: rear end of retainer 59: spring

60: notch groove 63: spring

64: metal sphere 65: groove

70: stepped part 71,73: thin part

72: stepped portion 74: annular groove

80: rim

The present invention relates to a lock, more particularly to a steering shaft lock of a motor vehicle.

Conventionally, as shown, for example, in US Pat. No. 4,487,042, a simultaneous locking device is provided on the steering shaft to prevent theft of the vehicle and is coupled to the ignition switch to control the running of the vehicle.

Typically, the steering shaft lock is a frame for rotation about its longitudinal central axis by means of a key between the frame and the "Lock" and "ON" positions or at the "START" position via the "ACC" position. A lock rod associated with the cam and spring and a rear of the cam so as to be able to move between the key cylinder housed therein, the cam rotating together with the key cylinder, and a locking position associated with the steering shaft and a release position released from the steering shaft. It consists of an ignition switch connected and actuated. The key can rotate about the longitudinal central axis from the Lock position to the OFF, ACC, ON and START positions after it is inserted into the key cylinder. In the “ON” position, the ignition switch supplies power to the engine, and in the “START” position, the starter motor is energized to start the engine.

If the key is released from the lock in the ˝Lock 회전 position, the rotation of the key cylinder to the, ON˝ position is prohibited, whereby the steering shaft cannot be rotated and the ignition switch can operate for theft prevention purposes. There will be no. Some conventional steering shaft locks include key detection means for detecting a key inserted into the key cylinder.

Conventional key detecting means includes a first pin slidably arranged in a key cylinder, a second pin for detecting a sliding motion of the first pin, and an inner surface of a locking device adapted to be operated by the movement of the second pin. It consists of a micro switch attached to the outer surface.

The micro switch is attached to the locking device together with a plurality of additional parts such as fastening members and ornaments connected to the switch.

This configuration will obviously deal with more parts to be assembled, complex assembly processes, and larger lock size. In order to solve this problem, a steering shaft lock of a new and practical structure has been required for many years.

An object of the present invention is to provide a steering shaft locking device that can detect the insertion and ejection of the key by the movement of the key cylinder by the insertion of the key.

Another object of the present invention is to provide a steering shaft locking device in which the insertion of a key into the device example can be detected by an ignition switch.

It is another object of the present invention to provide a steering shaft lock that can be strongly resistant to unauthorized or unreasonable destruction or injury.

According to the present invention, there is provided between a housing, a key cylinder positioned within the housing for rotation and longitudinal movement around a longitudinal major axis by a key, between a locking position associated with a steering shaft and a release position separated from the steering shaft. A lock rod movable in the shaft and a lever which rotates around the auxiliary axis for repulsive force applied to the front wall of the housing when the key is inserted into the key cylinder, thereby inducing the key cylinder to move inward in the housing and mounted in the key cylinder And a guard plate installed between the front wall of the housing and the cylinder adjacent to the lever.

The front wall of the housing is partitioned by a cover held in the housing or by a rim integrally formed in the housing.

The protection plate is provided for rotation in a circular or annular groove formed in a perspective of a housing or a cover accommodated in the housing and a cover fixed to the front end of the housing. A spring is provided to push the key cylinder and lever toward the front wall or cover of the housing.

The lever includes a lever body and a pair of pins protruding from the lever body, and the end of the lever body is in contact with the inserted key so that the lever body can rotate around the pins as an auxiliary side of the lever.

Otherwise, a semi-cylindrical notch can be formed in the lever to accommodate the complementary semi-circular protrusions formed as the axis of rotation in the key cylinder. As a result, the other end of the lever body exerts a repulsive force on the front wall of the housing for the webbing movement of the key cylinder.

When the key cylinder rotates around its longitudinal center from ˝Lock˝ to ˝ON˝ position, it is engaged with the lock rod in the release position to support the lock rod in the same release position until the retaining key is ejected. do.

The retainer is pushed by the spring directly from the lock rod and at the same time exerts an elastic force on the key cylinder towards the front end of the housing. The bezel is attached to the front end of the housing and has a groove formed in the inner surface.

The key cylinder is provided with a key cylinder, which is provided with an extension protrusion through an opening formed in the front wall of the housing to the groove of the bezel to prevent the bezel from rotating when the key cylinder is in the locked position.

When the key is inserted into the lock, the insertion engages one end of the lever which rotates around the pin.

The other end of the lever exerts a repulsive force on the pressure of the housing, with or without the shroud, thereby causing the key cylinder to move inward.

By movement of the key cylinder, a switch provided in the ignition switch is activated to detect the insertion of the key. When the key is rotated with its key cylinder around its longitudinal central axis, the lever and the protective wave rotate integrally, and the other end of the lever always remains in contact with the protective plate or the front wall of the housing.

The lever correctly detects the insertion of the key into the key cylinder, and the key cylinder slides long enough to ensure that the switch provided in the ignition switch device is operated.

Other objects of the present invention, as well as the foregoing, will become apparent from the following detailed description and the appended claims.

EXAMPLE

As shown in FIG. 1, the steering shaft locking device 10 according to the present invention is held at the housing 11, the sleeve 12 located in the housing 11, and the front end of the sleeve 12. It consists of a cover 13 which forms the front wall 11a of the housing 11.

The key cylinder 16 has the flange 15 provided in the cavity 14 formed in the sleeve 12, and can rotate about the longitudinal center axis | shaft.

Although not shown in detail, the key cylinder 16 is provided with a plurality of radial grooves in which tumblers are slidably mounted in a conventional manner.

As shown in FIG. 2, the retainer 20 is located in a longitudinal groove formed in the sleeve 12 so as to slide forward and backward along the groove.

The stopper 22 is positioned to slide in the hole 21 radially formed in the flange 15 of the key cylinder 16. The lock rod 18 is in the hole 19 of the housing 11 so as to slide between the locking position with the locking rod 18 protruding from the housing 11 and the release position entering the housing 11. Is installed.

For further configuration and operation of these components, including the retainer 20, reference may be made to US Pat. No. 4,495,786, which discloses a control member and a check lever actuated thereby.

The inner end 17 of the key cylinder 16 is located in the hole 24 formed in the rotor 23 rotatably installed in the housing 11 in a line with the key cylinder 16.

The pin 25 firmly connects the inner end 17 and the rotor 23 and the rear end 23a extending to an ignition switch device for operating a key detection switch (not shown).

5 is a view for explaining the flange 15 of the key cylinder 16 in which the cross groove 30 is formed so as to communicate with the key hole 26 into which the key (FIG. 6) is inserted.

The cross groove 30 has a side groove portion 31 extending radially from the key hole 26 and a split groove portion 32 substantially perpendicular to the side groove portion 31 and parallel to the key hole 26. It includes.

As shown in FIG. 2, the two radial bags 36 and 37 of the side groove portion 31 are provided while forming an approximately VV type cross section. The notched surface 38 is formed in front of the sleeve 12 in which the lever 33 is located. A protrusion 39 extending toward the cover 13 is provided on the flange 15 of the key cylinder 16. The lever 33 provided in the groove 30 is constituted by an approximately L-shaped lever body 34 having a rectangular cross section and a pair of pins 35 projecting at right angles from the lever body 34. These pins 35 are substantially parallel to the key holes 26, and the longitudinal center of the key cylinder 16 is able to rotate the lever 33 in a plane where the key holes 26 are almost normal. It is located on the axis as a normal. The lever body 34 has one end 34a which may be in contact with the key inserted into the key hole 26, and the other end which contacts the protective plate 40. The spacing between the pin 35 and the other end 34b is greater than between the pin 35 and one end 34a.

Thus, in the present embodiment, when the lever 33 rotates around the pin 35, the key cylinder 16 moves backwards with a large width.

The spacing between the pin 35 and one end 34a or the other end 34b can be determined in view of the design of the locking device.

Alternatively, instead of the pin 35, a semicircular cutout groove may be formed in the lever 33 to accommodate the complementary semicircular protrusion formed in the key cylinder 16.

When the lever 33 is installed in the force 30, the lever body 34 and the pin 35 are positioned in the side groove portion 31 and the split groove portion 32, respectively. The pin 35 of the circular cross section is suitably disposed in the split groove portion 32 so that the lever body 34 can pivot in the side groove portion 31 around the pin 35 by having a complementary semicircle. The inner wall of the cover 13 is provided with a circular groove 41 in which the protection plate 40 is located. The guard plate 40 is crescent shaped with an opening 42 and is made of a hard metal such as a sintered alloy.

The protection plate 40 prevents unauthorized insertion of an extension into the key hole 26 of the key cylinder 16. In the embodiment shown, the protection plate 40 is attached between the cover 13 and the sleeve 12. Since the sleeve 12 is firmly fixed to the housing 11, the protection plate 40 can rotate but not move laterally. Instead, if the shroud 40 is formed with a small diameter, it may be located between the key cylinder 16 and the cover 13. When the key 28 is inserted into the key hole 26 of the key cylinder 16, the lever 33 is moved by the car so that the remaining portion can move freely in the axial direction even if the protection plate 40 does not move in the axial direction. Is rotated.

As shown in Figs. 2 and 8, the cover 13 is provided with a rectangular opening 44 in which the projection 39 is located when the key cylinder 16 is in the front without the insertion of the key. The bezel 45 made of synthetic resin is rotatably installed on the outer surface of the cover 13. The bezel 45 includes a central through hole 46 and a groove 47 formed on the inner surface thereof. When the key cylinder 16 is in front, the projection 39 of the key cylinder 16 is positioned in the groove 47 to prevent relative rotation of the bezel 45 relative to the key cylinder 16.

The holder 20 disposed in the sleeve 12 extends in the longitudinal direction rearward along the key cylinder 16 and the rotor 23. The front end 50 of the holder 30 is adjacent to the cam 51 (FIG. 7) formed on the flange portion 15 of the key cylinder 16. The rear end 58 of the retainer 20 extends through a hole 27 formed in the housing 11.

As shown in FIG. 7, the cam 51 includes a flat portion 52 formed in front of the hole 21 in which the stopper 22 is positioned, an inclined portion 53 communicating with the flat portion 52, and , The lower part 55 formed below the stepped part 54 and the stepped part 54 formed at the end of the inclined part 53, and the top part 56 raised from the lower part 55 adjacent to the hole 21. And an inverting portion 57 that passes over the hole 21 and is connected to the condenser portion 56 and the flat portion 52. That is, the inverting portion 57 is radially located outside the stopping column 22. When the front end 50 of the retainer 20 is moved rearward in the state of engagement with the inclined portion 53, the rear end 58 of the retainer 20 is cut out groove 60 formed in the lock rod 18. Go inside. Returning to FIG. 2, the sleeve 12 is formed with a radial groove 62 for accommodating the spring 63 and the metal ball 64. The front end 50 of the retainer 20 is always adjacent to the cam 51 by the metal sphere 64 by the elastic force of the spring in the radial direction and the inner direction.

The coil spring 59 is arranged around the holder 20 between the step portion 58 provided on the holder 20 and the housing 11.

Therefore, the retainer 20 and the cylinder 16 are always pushed forward by the spring 29 elastically. An ignition switch device (not shown) is installed in the groove 65 formed at the rear of the housing 11.

In assembling the steering shaft locking device 10 according to the present invention, the pin 25 is fixed to the rotator 23 of the key cylinder 16. Thereafter, the retainer 20 and the stopper 22 are installed in the sleeve 12, and the key cylinder 16 is inserted into the sleeve 12.

Next, the lever 33 is located in the groove 30 in the flange portion 15 of the key cylinder 16, while the protection plate 40 is located in the circular groove 41 of the cover 13, The sleeve 12 is placed in the housing 11 and the cover 13 is held in the housing 11 with pins not shown.

An ignition switch device including a key detection switch is installed in the groove 65. After completion of the assembly, the projection 39 of the key cylinder 16 extends into the groove 47 through the opening 44 of the cover 13, so that the bezel 45 cannot be rotated without the key.

In operation, when the key 28 is inserted into the key hole 26 of the key cylinder 16, the inner top 28 of the key comes into contact with one end 24a of the lever body 34, and the second The lever 33 is rotated counterclockwise around the pin 35 in the figure so that the other end 34b of the lever 34 exerts a repulsive force on the inner surface of the cover 13. As can be seen from FIG. 6, by the counterclockwise rotation of the lever 33, the key cylinder 16 moves inward and backward with respect to the elastic force of the spring 59, and the rear end 23a of the rotor 23 is rotated. Switches the key detection switch from ˝OFF˝ to ˝ON˝, or vice versa, within an ignition switch device providing an electrical signal.

At the same time, with the back movement of the key cylinder 16, the projection 39 of the flange 15 is retracted from the groove 47 of the bezel 45 and the opening 44 of the cover 13, thereby providing a key 28. And key cylinder 16 and bezel 45 to rotate together.

When the key 28 together with the car cylinder 16 is rotated about the longitudinal center axis of the key cylinder 16 from the lock to the OFF position, the front end 50 of the retainer 20 is cam. The inclined portion 53 is moved from the flat portion 52 of the 51.

The rotation of the key 28 is added while the lock rod 18 is moved from the locked position engaged with the groove formed in the steering shaft to the unlocked position not associated with the cam (not shown) formed in the rotor 23. As a result, the front end 50 is moved relatively backward along the inclined portion 53 against the elastic force of the spring 59.

At the same time, the rear end 58 of the retainer 20 enters the cutout groove 60 of the lock rod 18. After a sufficient length of the rear end 58 is inserted into the cutout groove 60, the front end 50 passes from the stepped portion 54 of the cam 51 to the lower portion 55, and passes through the metal ball 64. By the elastic force of the spring 63 is moved radially inward. Thereafter, the key 28 is rotated so as to move the switching switch device to the "ON" or "START" position via the "ACC".

If the key 28 is to be rotated back about the longitudinal central axis from ˝ON˝ to the ˝Lock˝ position, the leading end 50 is moved from the lower portion 55 to the top portion 56. At this time, due to the key 28 inserted into the key hole 26, the stopper 22 is held in a radially outwardly positioned position from the key cylinder 16, and the front end 50 is a stopper ( Adjacent to the inner surface 22a of 22).

Thus, the rear end 38 of the retainer 20 is cut off of the lock rod 18 which is consequently installed in the unlocked position until the key 28 is ejected from the key hole 26 of the key cylinder 16. Insertion is maintained in the binding groove (60). When the key 28 is retracted from the key hole 26 to the ˝Lock˝ position, the stopper 22 is then on the retainer 20 which is inverted into the flat portion 52 through the inverted portion 57. It moves radially inward under the elastic force of the spring 59 applied to it.

At the same time, the key cylinder 16 is resiliently moved of the spring 59 from the rear of Nathan in FIG. 6 to the front shown in FIG. 2 so that the key detection switch in the ignition switch device detects the retraction of the key 28. .

As described above, when the key 28 is inserted into the steering shaft lock 10, the other end 34b can exert a repulsive force on the cover 13 passing through the protective plate 40, whereby the key The key is brought into contact with one end 34a of the lever 33 which causes the cylinder 16 to move rearward and induce the key detection switch to be activated. While the key 28 is being rotated, the key cylinder 16 is connected with the lever 33 around the longitudinal center axis of the key cylinder while the other end 34b is always in contact with the protection plate 40. The protection plate 40 is rotated in the same manner. This enables the key 28 to be rotated smoothly without any mechanical damage such as wear of the lever 33.

The present invention can be modified in various ways. For example, the ninth nonnon, stepped portion 70 and the thin portion 71 may be formed at the front end of the housing 11, so that the stepped portion 72 and the thin portion 43 are covered with the cover 13. A second embodiment of the present invention that can be formed in FIG. The thin portion 73 of the cover 13 is attached to the outer surface of the thin portion 71 of the housing 11 so that the stepped portion 72 of the cover 13 is in front of the thin portion 71 of the housing 11. In contact with the end, so that an annular groove 74 can be formed between the housing 11 and the cover 13. The shroud 40 may be positioned to be rotatable in the annular groove 74 without axial movement. FIG. 10 is a view, arranged facing the front end of the sleeve 12 to prevent axial movement of the protection plate 40 such that the protection plate 40 rotates in a circular groove 41 formed in the cover 13. A third embodiment of the invention is shown.

FIG. 1 also shows another embodiment of the invention in which the front wall 11a, which includes the rim 80, is integrally formed on the other part of the housing by die casting and molding instead of the cover 13. US Pat. No. 4,516,415 discloses a locking device having a basic structure similar to that shown in FIG.

Instead of the spring 59 pushing the key cylinder 16, another resilient member, such as a spring, may be placed between the sleeve 12 and the key cylinder.

In short, when the key is inserted into the steering shaft lock of the present invention, the repulsive force exerted on the pressure of the housing by the lever allows the key cylinder to move backwards, and the protective plate which the other end of the lever contacts makes the key smooth. Rotate, to prevent wear of the lever and unauthorized insertion of the tool into the keyhole.

As can be seen from the above, the lever provides a large enough width for the movement of the key cylinder when the key is inserted into the device, whereby the key detection switch can be reliably operated to provide an electrical signal within the ignition switch device. Can be.

Claims (15)

A housing 11 including a cover 13 having a front wall 11a; A key cylinder 16 provided in the housing 11 for rotation and longitudinal movement around its longitudinal center axis by the key 28; A locking rod (18) movable between a locking position engaged with the steering shaft and a release position separated from the steering shaft; A single drive element mounted in the key cylinder (16) to move the key cylinder inwardly in the housing (11) when the key (28) is inserted into the key cylinder (16); The drive element is mounted so as to be rotatable between the front wall 11a of the housing 11 and the key cylinder 16 and at the same time does not come into contact with the housing 11 and the protection plate 40 which prevents shaft movement. In order to exert a repulsive force on the front wall 11a, one end contacts the protection plate 40 and a lever 33 capable of rotating about one auxiliary shaft, when the key cylinder 16 is rotated and the key is released. In order to hold the lock rod 18 in the unlocked position, the organic paper 20 can be engaged with the lock rod 18 in the unlocked position, and to press the holder 20 out of the lock rod 18. And a spring (59) wound around the retainer (20) to press the key cylinder (16) toward the front wall (11a) of the housing (11). The method of claim 1, further comprising a bezel 45 attached to the front end of the housing 11 and having a central through hole 46 into which the key 28 can be inserted. Steering shaft lock for cars. The key cylinder (16) of claim 2, wherein the key cylinder (16) extends through the hole (44) of the front wall (11a) of the housing (11) into the groove (47) of the bezel (45). Steering shaft lock device for a vehicle, characterized in that when in the locked position, has a projection (39) that can prevent the rotation of the bezel (45). 4. A steering shaft lock according to any one of claims 1 to 3, wherein the auxiliary shaft is such that the key cylinder 16 is approximately normal to the longitudinal central axis. 2. The lever (33) according to claim 1, wherein the lever (33) includes one lever body (34) and a pair of pins (35) protruding from the lever body (34), and one end (34a) of the lever body (34). ) Allows the lever body 34 to be rotated around the pins 35 forming the auxiliary axis in contact with the inserted key 28, so that the other end 34b of the lever body 34 is rotated. Steering shaft lock device for a vehicle, characterized in that to apply a repulsive force to the front wall (11a) of the housing (11) for the longitudinal movement of the cylinder (16). The distance between the other end 34b of the lever 33 and the pins 35 is longer than the distance between the one end 34a of the lever 33 and the pins 35. Steering shaft lock for cars. 7. The lever (33) according to claim 1, 5 or 6, wherein the lever (33) comprises a semicircular cutout groove for receiving complementary semi-circular protrusions formed in the key cylinder (16) for rotation of the lever (33). Steering shaft lock device for cars, characterized in that. 2. The steering shaft lock device according to claim 1, wherein the key cylinder (16) is pressed in contact with the protective plate (40) by a spring (59). 2. The cover (13) according to claim 1, wherein a space for introducing the key (28) into the key groove (26) is provided in the cover (13) and a space for rotating the key (28) relative to the housing (11). A first hole to make; Has a second hole for receiving one projection 39 extending from the key cylinder 16; The key cylinder 16 is locked to the housing 11 to exclude the relative rotation between the housing 11 and the key cylinder 16, wherein the bezel 45 having one through hole 46 has the cover ( 13 is rotatably mounted, and the bezel 45 is provided with a groove 47 for accommodating the protrusion 39, which causes the bezel 45 to be locked to the housing 11. Steering shaft lock for a vehicle, characterized in that to exclude the relative rotation between the (11) and the bezel (45). 10. The protection plate (40) according to claim 9, wherein one protection plate (40) having an opening (42) is located between the key cylinder (16) and the cover (13), and the protection plate (40) is a space for the protrusion (39). Steering shaft lock for a vehicle, characterized in that it is formed to provide. The key cylinder (16) according to claim 9 or 10, wherein the key cylinder (16) has one lever (33) that can be actuated upon insertion of the key (28) into the key cylinder (16). Steering shaft lock for a vehicle, characterized in that for moving the key cylinder (16) from the protective plate (40) to release the bezel (45). 11. A steering shaft lock according to claim 9 or 10, characterized in that the housing (11) comprises a sleeve (12) for supporting the key cylinder (16). 13. The movable retainer (20) of claim 12 is moved by the sleeve (12) and supported by the housing (11), which retainer (20) drives the lock rod (18). Steering shaft lock for a vehicle, characterized in that it can be operated to. 14. The key cylinder (16) according to claim 13, wherein the key cylinder (16) is operable to prevent movement of the retainer (20) with respect to the key cylinder (16) when the key cylinder (16) moves away from the shroud (40). Steering shaft locking device for a vehicle, characterized in that it comprises a removable stopper (22) that reacts upon insertion of the key (28). 15. The holder according to claim 13 or 14, wherein when the key cylinder (16) rotates, the holder (20) is moved by a cam (51) formed on the key cylinder (16). Steering shaft lock device for a vehicle, characterized in that the machine 20 is coupled to the lock rod (18) to operate it.

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