JP2018184090A - Steering lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steering lock device which needs a small number of assembly work hours.SOLUTION: A steering lock device 1 includes: a lock body 10 having a lock mechanism housing part 15 and a front cylindrical housing part 13; a key cylinder 20 housed in the front cylindrical housing part 13; a lock mechanism 40 which is housed in the lock mechanism housing part 15 and switches a state of the device between a state in which rotation of the steering shaft is restricted and a state in which the rotation of the steering shaft is allowed in conjunction with rotation operation in the key cylinder 20; and a cover 50 which prevents falling of the lock mechanism 40 from the lock mechanism housing part 15. The key cylinder 20 has a lock piece 21 protruding rearward. The cover 50 has a lock piece protruding in a second direction. The cover 50 has a lock groove 52 into which the lock piece 21 enters.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a steering lock device.

2. Description of the Related Art Conventionally, a steering lock device that switches between steering lock and unlock according to the rotation position of a key cylinder is well known.
In the steering lock device disclosed in Patent Literature 1, the lock mechanism component that locks the operation of the steering shaft is accommodated in the case, and then the cover is attached to the case, thereby preventing the lock mechanism component from dropping from the case.

JP 2012-11838 A

In the steering lock device of Patent Document 1, since the case and the cover are attached by screw fastening, the number of assembling steps is large.
An object of the present invention is to provide a steering lock device with a small number of assembly steps.

  In order to solve the above-described problem, a steering lock device includes a first housing portion that opens in a first direction and a second housing portion that opens in a second direction intersecting the first direction and is continuous with the first housing portion. A lock body that rotatably supports the steering shaft, a key cylinder accommodated in the second accommodating portion, and accommodated in the first accommodating portion and in conjunction with a rotation operation in the key cylinder, A lock mechanism that switches between a state that restricts rotation of the steering shaft and an allowable state; and a cover that covers the first housing portion and prevents the lock mechanism from falling off. It has a lock piece protruding in two directions, and the gist is that the cover has a lock groove into which the lock piece enters.

  According to this structure, the displacement to the 1st direction of the key cylinder accommodated in a 2nd accommodating part is controlled. Therefore, the displacement in the first direction of the cover having the lock groove that engages with the lock piece provided in the key cylinder is restricted. That is, the cover cannot be displaced by attaching the key cylinder to the lock body.

As described above, the steering lock device having this configuration does not require the conventional screw fastening for attaching the case and the cover, so that the number of assembling steps is small.
In the above configuration, it is preferable that the lock body has a hook portion that protrudes so as to cover a part of the opening portion above the opening portion of the first housing portion.

  According to this configuration, the first accommodating portion can be covered with the cover by rotating and displacing the cover around the portion supported by the hook portion of the cover by the hook portion. Thereby, the position shift of a cover is suppressed with respect to a 1st accommodating part at the time of attachment of the cover to a lock body.

The said structure WHEREIN: It is preferable that the said hook part is provided so that a said 1st accommodating part may be located between the said 2nd accommodating part.
According to this configuration, the distance between the hooking portion that restricts the displacement of the cover with respect to the lock body and the lock protrusion can be ensured long, so that the cover is less likely to come off the lock body.

  The steering lock device of the present invention has an effect that the number of assembling steps is small.

The exploded perspective view of a steering lock device. The top view of a steering lock device. (A) is sectional drawing in the instruction | indication line 3-3 of FIG. 2, (b) is a partially expanded view of (a). (A) is an enlarged view of the broken line part of FIG. 3, (b) is an enlarged view of the broken line part of FIG. 3 which shows the displacement aspect of a lock piece. The top view which shows the attachment aspect to the lock body of a cover.

Hereinafter, an embodiment of a steering lock device will be described with reference to the drawings.
As shown in FIG. 1, the steering lock device 1 includes a lock body 10, a key cylinder 20, an ignition switch 30, a lock mechanism 40, and a cover 50.

  The lock body 10 includes a semi-cylindrical shaft attachment portion 11 and a body main body portion 12 continuous with the upper portion of the shaft attachment portion 11. The body main body 12 extends as a whole in a direction intersecting with the axial direction of the shaft attachment portion 11. Here, the direction in which the body main body 12 extends is defined as the front-rear direction. The front-rear direction corresponds to the second direction.

  A semi-cylindrical bracket 2 is attached to the shaft attachment portion 11 via a fastener. A steering shaft 4 indicated by a broken line in FIG. 1 is inserted into a cylindrical portion configured by cooperation with the shaft attachment portion 11 and the bracket 2 so as to be rotatable relative to the lock body 10 and the bracket 2.

  As shown in FIG.1 and FIG.3 (a), the body main-body part 12 has the front side cylindrical accommodating part 13 recessed by the front part, and the rear cylindrical accommodating part 14 recessed by the rear part. . The front cylindrical housing portion 13 and the rear cylindrical housing portion 14 are provided such that the central axis O extends in the front-rear direction and coincides with it. The front cylindrical housing portion 13 corresponds to a second housing portion.

  A key cylinder 20 is inserted into the front cylindrical housing portion 13 and an ignition switch 30 is inserted into the rear cylindrical housing portion 14 to be attached to the body main body portion 12.

  Furthermore, the body main body 12 includes a lock mechanism housing 15 that is recessed in the upper part. That is, the lock mechanism accommodating portion 15 opens in the up-down direction corresponding to the first direction. The lock mechanism housing portion 15 is located at the center in the front-rear direction of the body main body portion 12 and connects between the front cylindrical housing portion 13 and the rear cylindrical housing portion 14. Note that a shaft lock hole 16 having a rectangular cross section penetrating to the shaft mounting portion 11 is provided in the lower bottom portion of the lock mechanism housing portion 15. The lock mechanism housing part 15 corresponds to a first housing part.

  As shown in FIG. 2, when viewed from above, the opening 17 of the lock mechanism housing portion 15 is, in order from the front side to the rear side, a substantially square shape, an isosceles trapezoid having a bottom side on one side of the rear side that constitutes a substantially square shape, and It is the shape which combined the rectangle which makes the short base of the front side the upper base of an isosceles trapezoid.

Further, as shown in FIGS. 3A and 3B, the body main body portion 12 includes a hooking portion 18 that protrudes toward the front side above the rear edge portion 17 a of the opening portion 17.
As shown in FIGS. 1 and 3A, the lock mechanism 40 is a well-known configuration housed in the lock mechanism housing portion 15, and includes a lock bar 41, a cam shaft 42, a lock piece 43, And a lock spring 44. Since the lock mechanism 40 has a well-known configuration, a detailed description of the shape and the like will be omitted, and the description will focus on the operation between the components.

  The lock bar 41 is provided in the shaft lock hole 16 and is displaced in the vertical direction along the shaft lock hole 16. A lock piece 43 is attached to the upper portion of the lock bar 41, and a shaft hole penetrating in the front-rear direction is formed by the cooperation of the lock bar 41 and the lock piece 43.

  The camshaft 42 is a member that connects the key cylinder 20 and the ignition switch 30 and extends in the front-rear direction. The camshaft 42 is inserted through a shaft hole configured by cooperation of the lock bar 41 and the lock piece 43.

  A cam is provided in a central portion of the cam shaft 42, that is, a portion facing the shaft hole in the vertical direction, and the cam can be engaged with a cam provided in the lock piece 43. The camshaft 42 pushes up the lock piece 43 by rotating around the axis.

  The lock piece 43 is attached to the upper part of the lock bar 41 and is displaced integrally with the lock bar 41. Note that an elastically compressed lock spring 44 is interposed between the upper portion of the lock piece 43 and the cover 50 that closes the opening 17 of the lock mechanism housing portion 15.

The lock spring 44 constantly urges the lock piece 43, and thus the lock bar 41, downward.
As shown in FIG. 2, in the top view, similarly to the outer shape of the opening portion 17 of the lock mechanism housing portion 15, the cover 50 has a substantially square shape and a substantially square-shaped side on the lower side. The shape is a combination of an isosceles trapezoid with a bottom and a rectangle with the upper base of the isosceles trapezoid as a short side on the front side. The length of each side of the substantially square and the isosceles trapezoid and the length of the short side of the rectangle are set slightly shorter than the length of each side of the opening 17 corresponding to each of these.

  As shown in FIGS. 1 and 3A, the cover 50 has a protruding piece 51 on the lower surface on the front side of the center portion that supports the lock spring 44. In a state where the cover 50 closes the opening 17, the protruding piece 51 extends to a position facing the front cylindrical housing portion 13 in the front-rear direction. A lock groove 52 is recessed in the front surface of the protruding piece 51.

  As shown in FIGS. 1 and 3A, the key cylinder 20 has a columnar shape as a whole, and the outer diameter thereof is set slightly smaller than the inner diameter of the front cylindrical housing portion 13. The key cylinder 20 is attached to the lock body 10 by being inserted into the front cylindrical housing portion 13. The key cylinder 20 can be rotated by inserting a mechanical key (not shown).

  A lock piece 21 extending toward the rear side is provided on the upper rear side of the key cylinder 20. The lock piece 21 enters the lock groove 52 of the cover 50 that closes the opening 17 of the lock mechanism housing portion 15 as the key cylinder 20 is inserted into the front cylindrical housing portion 13. Since the key cylinder 20 is inserted into the front cylindrical housing portion 13, it cannot be displaced in the vertical direction with respect to the lock body 10. Therefore, the engagement between the lock piece 21 and the lock groove 52 restricts the vertical displacement of the cover 50 relative to the lock body 10.

  As shown in FIG. 3A, the key cylinder 20 has a protruding position that protrudes from the outer peripheral surface (see FIG. 4A) and a storage position that does not protrude from the outer peripheral surface (see FIG. 4B). And a regulating piece 22 that is displaced between the two. The restricting piece 22 is located at the retracted position when the rotational operation position by a mechanical key (not shown) is the set position, and is located at the protruding position when it is not the set position. The setting position in this example is the accessory-on position, but may be changed as appropriate.

  As shown in FIGS. 3A and 4A, when the restricting piece 22 is located at the protruding position, that is, when the rotational operation position by a mechanical key (not shown) is other than the set position (accessory-on position). , It enters into a regulation groove 13 a that is recessed in the inner peripheral surface of the front cylindrical housing portion 13. Due to the engagement between the restriction piece 22 and the restriction groove 13a, the displacement of the key cylinder 20 in the front-rear direction with respect to the lock body 10 is restricted.

  On the other hand, as shown in FIG. 4B, when the restricting piece 22 is located at the retracted position, that is, when the rotational operation position by a mechanical key (not shown) is the set position (accessory-on position), the front cylindrical housing is accommodated. It does not enter into the regulation groove 13 a that is recessed in the inner peripheral surface of the portion 13. Thereby, the displacement of the key cylinder 20 in the front-rear direction with respect to the lock body 10 is allowed.

  As shown in FIG. 1, the detector 5 that detects the removal of the key cylinder 20 from the lock body 10 may be attached to the lock body 10 together with the key cylinder 20. Further, the immobilizer 6 may be further attached to the lock body 10 to which the key cylinder 20 is attached.

  As shown in FIGS. 1 and 3A, the ignition switch 30 has a columnar shape as a whole, and its outer diameter is set slightly smaller than the inner diameter of the rear cylindrical housing portion 14. The ignition switch 30 is attached to the lock body 10 by being inserted into the rear cylindrical housing portion 14. Note that the ignition switch 30 is electrically connected to each control unit of an in-vehicle device (not shown).

  The ignition switch 30 and the key cylinder 20 are connected by the camshaft 42 described above. That is, a rotational operation position by a mechanical key (not shown) inserted into the key cylinder 20 and rotated is transmitted to the ignition switch 30 via the cam shaft 42.

  The ignition switch 30 generates an electrical signal corresponding to the rotational operation position. Each control unit of the in-vehicle device switches on / off of a driving source for driving (for example, an engine), on / off of an accessory, on / off of an ignition, and the like based on the rotation operation position.

Next, the assembly procedure of the steering lock device 1 and the effects thereof will be described.
As shown in FIG. 3A, after inserting each part of the lock mechanism 40 into the lock mechanism housing part 15 of the lock body 10, the cover 50 is attached to the opening 17 of the lock mechanism housing part 15.

  At this time, the cover 50 presses the rear edge 53 of the cover 50 against the rear edge 17a of the opening 17 and is hooked on the hook 18 so as to indicate the rear edge as shown by a two-dot chain line in FIG. The opening 17 is closed while drawing a rotation trajectory that lowers the front edge with the portion 53 as the rotation center.

  Since the lock spring 44 in an elastically compressed state is interposed between the cover 50 and the lock piece 43, the cover 50 receives the elastic force of the lock spring 44 at the time of attachment. However, the cover 50 is hooked by the hook portion 18 at the rear edge 53 thereof. More precisely, the upward displacement of the rear edge 53 is regulated by the hook 18. . For this reason, the opening part 17 can be easily obstruct | occluded with the cover 50 by passing through an above-described procedure. Further, the displacement of the cover 50 with respect to the opening portion 17, that is, the lock mechanism housing portion 15, is also suppressed.

  Next, the key cylinder 20 is inserted into the front cylindrical housing portion 13 of the lock body 10. More precisely, a mechanical key (not shown) is inserted, and the key cylinder 20 in a state of being rotated to the set position (accessory on) is inserted into the front cylindrical housing portion 13. As a result, the lock piece 21 enters the lock groove 52 of the cover 50. Due to the engagement between the lock piece 21 and the lock groove 52, the vertical displacement of the cover 50 with respect to the lock body 10 is restricted.

  Then, by rotating a mechanical key (not shown) to a position other than the set position, here, to a position other than the accessory-on position, the restricting piece 22 enters the restricting groove 13 a of the front cylindrical housing portion 13. Due to the engagement between the restriction piece 22 and the restriction groove 13a, the displacement of the key cylinder 20 in the front-rear direction with respect to the lock body 10 is restricted.

  Thereafter, the steering lock device 1 is assembled by attaching the ignition switch 30 to the rear cylindrical housing portion 14 and the immobilizer 6 to the front portion of the front cylindrical housing portion 13.

  As described above, in the assembly process of the steering lock device 1, particularly in the process of regulating the displacement of the cover 50, a process such as screwing or press-fitting is not required. The assembly time is short. In addition, in the case of screwing or press fitting, holes are required in each of the cover 50 and the lock body 10, and these holes must be aligned in the axial direction during assembly. Therefore, it is necessary to define strict dimensional tolerances on the cover 50 and the lock body 10, but in this example, since it is not necessary to provide such holes, the dimensional tolerances are relatively loose and the manufacture of each component is easy. .

  Further, the lock body 10 has a lock mechanism housing portion 15 between the hook portion 18 and the front cylindrical housing portion 13. For this reason, the hook 18 that restricts the displacement of the cover 50 with respect to the lock body 10 and the lock piece 21 provided on the key cylinder 20 that is attached to the lock body 10 by being inserted into the front cylindrical housing portion 13. A long distance is ensured. For this reason, the cover 50 whose upward displacement is regulated by the cooperation of the hook portion 18 and the lock piece 21 is unlikely to be detached from the lock body 10.

In addition, you may change the said embodiment as follows.
-In the said embodiment, as shown to FIG.1 and FIG.3 (a), you may provide the interlock 7 which suppresses that the cover 50 remove | deviates with respect to the lock body 10 more reliably.

  In the above embodiment, as shown in FIG. 1 and FIG. 3A, when the rear edge 53 of the cover 50 and the rear edge 17a of the opening 17 abut, the front end of the hook 18 The restriction protrusion 54 may be set on the upper portion of the cover 50 so as to come into contact. With this configuration, it is easy to confirm whether or not the cover 50 is misaligned with respect to the opening 17, and the cover 50 can be easily attached to the lock body 10.

  In the above embodiment, the position where the hooking portion 18 is set is not limited to the position above the rear edge portion 17 a of the opening portion 17. The hooking part 18 may be provided in a manner protruding so as to cover a part of the opening part 17.

  In the above embodiment, the hooking portion 18 may be omitted. In this case, the projecting pieces 51 projecting from the lower surface of the cover 50 are provided at two front and rear positions so as to enter the lock hole portions corresponding to the lock grooves 52 provided at the two projecting pieces 51 at the front and rear positions. The lock piece 21 provided in the key cylinder 20 is lengthened.

Alternatively, the ignition switch 30 is also provided with a lock piece corresponding to the lock piece 21, and each of them enters a lock groove 52 provided in the corresponding two protruding pieces 51.
If comprised in this way, even if the hooking part 18 is omitted, screw fastening or the like is not required for attaching the cover 50 to the lock body 10, so the number of assembling steps is small.

In the above embodiment, the lock piece 21 is provided on the key cylinder 20, but may be provided on the ignition switch 30.
Next, the technical idea conceived from the embodiment and the other examples will be described.

(A) In the above configuration, the cover has a restricting protrusion that abuts on the tip of the hook when the first housing is closed.
(B) In the above configuration, the key cylinder is displaced between a protruding position and a retracted position in conjunction with a rotation operation, and a lock piece that enters a lock groove provided in the lock body when positioned at the protruding position. Having.

DESCRIPTION OF SYMBOLS 1 ... Steering lock apparatus, 2 ... Bracket, 4 ... Steering shaft, 5 ... Detector, 6 ... Immobilizer, 7 ... Interlock, 10 ... Lock body, 11 ... Shaft mounting part, 12 ... Body main part, 13 ... Front cylinder Shaped accommodation part (second accommodation part), 13a ... regulating groove, 14 ... rear cylindrical accommodation part, 15 ... lock mechanism accommodation part (first accommodation part), 16 ... shaft lock hole, 17 ... opening part, 17a ... Rear edge part, 18 ... Hook part, 20 ... Key cylinder, 21 ... Lock piece, 22 ... Regulator piece, 30 ... Ignition switch, 40 ... Lock mechanism, 41 ... Lock bar, 42 ... Cam shaft, 43 ... Lock piece, 44 ... lock spring, 50 ... cover, 51 ... projecting piece, 52 ... lock groove, 53 ... edge, 54 ... regulating projection.

Claims (3)

A lock that has a first housing portion that opens in a first direction and a second housing portion that opens in a second direction intersecting the first direction and is continuous with the first housing portion, and rotatably supports the steering shaft. Body,
A key cylinder accommodated in the second accommodating portion;
A lock mechanism that is housed in the first housing portion and that switches between a state that restricts rotation of the steering shaft and a state that permits rotation in conjunction with a rotation operation in the key cylinder;
A cover for preventing the locking mechanism from falling off by covering the first housing portion;
The key cylinder has a lock piece protruding in the second direction,
The cover is a steering lock device having a lock groove into which the lock piece enters. The steering lock device according to claim 1, wherein
The lock body is a steering lock device having a hooking portion that protrudes so as to cover a part of the opening above the opening of the first housing portion. In the steering lock device according to claim 2,
The hooking portion is a steering lock device provided such that the first housing portion is located between the hook portion and the second housing portion.