JP4539327B2 - Steering lock device - Google Patents

Description

  The present invention relates to a steering lock device, and more particularly to a steering lock device with improved anti-theft performance.

  The steering device is integrally formed from a cylindrical lock body that is disposed in a steering column portion of an automobile and that houses a cylinder lock, and a lock guide that extends from the lock body toward the steering shaft (for example, Patent Documents). 1).

  In this steering device, a rod member is slidably accommodated in the lock guide, and the tip of the rod member is locked in the lock groove of the steering shaft to prevent the steering shaft from rotating. Yes.

Further, a locking groove is formed on the side surface of the rod member, and a deadlock pin is urged and disposed inside the lock guide facing the locking groove. This deadlock pin is normally locked in a state of being urged by a plate or the like. When the steering lock device is damaged, the locked state is released, and the deadlock pin is engaged with the locking groove of the rod member. Stopped. Therefore, even if an attempt is made to release the steering lock by damaging the steering device, the deadlock pin is locked in the locking groove of the rod member so that the steering cannot be rotated.
JP-A-10-264770

  However, in the conventional example, the vicinity of the deadlock pin in the lock guide of the steering lock device is broken or the magnet is applied to the vicinity of the deadlock pin to release the locked state between the deadlock pin and the rod member. The structure is not necessarily excellent in anti-theft performance.

  Accordingly, the present invention provides a steering lock device in which it is difficult to inhibit the operation of the deadlock pin by damaging the vicinity of the deadlock pin or by applying a magnet to the vicinity of the deadlock pin. It is aimed.

In order to achieve the above object, the present invention provides a cylindrical lock main body having a cylinder lock that is rotated, a cylindrical lock guide extending from the lock main body toward a steering shaft, and the lock guide. A rod member that is slidably housed in the axial direction, protrudes from the tip of the lock guide and engages with a lock groove on the outer peripheral surface of the steering shaft, and is urged to move in the radial direction in the lock guide. And a deadlock member that is released when an impact load is input to the lock body or the lock guide and prevents the rod member from sliding, and the steering shaft can be rotated. The side of the column bracket to be accommodated and held is extended toward the lock guide, and this extension allows the deadlock member to be arranged in the lock guide. Covers the parts from above, the arrangement portion of the lock guide deadlock member is bulged upward to form the projecting portion, the deadlock member disposed within the projecting portions, the lower of the deadlock member While the rod member is arranged on the side, a concave portion that is recessed upward is provided in the extension portion of the column bracket, and the protruding portion of the lock guide is accommodated in the concave portion .

  According to the present invention, since the extension portion of the column bracket covers the arrangement portion of the deadlock member in the lock guide, it is very difficult to damage the vicinity of the arrangement portion of the deadlock member. In addition, it is difficult for the extension part of the column bracket to get in the way, and it is difficult to apply a magnet near the arrangement part of the deadlock member. Thus, according to the present invention, it is possible to obtain a steering lock device with excellent antitheft performance.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing a front portion of a vehicle compartment in which a steering lock device according to an embodiment of the present invention is provided.

  An instrument panel 1 is disposed in the front part of the vehicle compartment along the vehicle width direction, and a steering wheel 3 and a steering lock device 5 are provided on the driver seat side on the right side of FIG. In FIG. 1, only a cylinder lock head 7 constituting the steering lock device 5 is shown.

  FIG. 2 is a perspective view showing the steering lock device and the column bracket according to the embodiment of the present invention.

  The column bracket 9 includes a cylindrical column main body portion 11 extending in the vehicle front-rear direction, and an extension portion 13 extending from the side surface of the front end portion 11a of the column main body portion 11 to the outside in the vehicle width direction (the lock guide side of the steering lock device 5). And. A steering shaft (not shown) is rotatably accommodated on the inner peripheral side of the column main body 11.

  A steering lock device 5 is disposed on the right side of FIG.

  FIG. 3 is a plan view showing the steering lock device according to the embodiment of the present invention, and FIG. 4 is an exploded perspective view of the steering lock device according to the embodiment of the present invention.

  The steering lock device 5 includes a cylindrical lock body 17 having a cylinder lock 15 that is rotated, a cylindrical lock guide 19 that extends from the lock body 17 toward the steering shaft toward the left side in FIG. A rod member 21 slidably housed in the guide 19 in the vehicle width direction, which is the axial direction thereof, and protrudes from the tip 19a of the lock guide 19 and engages with a lock groove (not shown) on the outer peripheral surface of the steering shaft; A deadlock pin 25 (deadlock member) is provided in the lock guide 19 so as to be movable in the radial direction of the lock guide 19 and locked in a locking groove 23 formed on the side surface of the rod member 21. Yes.

  The lock body 17 accommodates a cylinder lock 15 that is rotated, and the cylinder lock 15 is connected to an ignition switch 27 via a key rotor 29. The key rotor 29 is engaged with the hanger rod 31, and the hanger rod 31 and the rod member 21 are slid in the axial direction of the lock guide 19 by the rotation of the key rotor 29.

  An accommodation hole 33 is formed in the side surface of the lock guide 19, and the deadlock pin 25 is accommodated in the accommodation hole 33 via a spring 35. At this time, the deadlock pin 25 is locked to the end portion 37a of the deadlock plate 37 in a state where the spring 35 is pressed and contracted. The opening end of the accommodation hole 33 is sealed with a lid 49.

  Further, mounting pieces 39 and 39 projecting in the vehicle front-rear direction are integrally formed at the rear portion of the right end portion of the lock guide 19 and the front portion of the central portion, and the mounting pieces 39 and 39 have bolt holes. 41 is drilled.

  The tip 21a of the rod member 21 protrudes from the tip 19a of the lock guide 19 and is configured to engage with a lock groove on the outer peripheral surface of the steering shaft (not shown), thereby preventing the steering shaft from rotating. be able to.

  5 is a cross-sectional view taken along line AA in FIG. 2, and FIG. 6 is a cross-sectional view taken along line BB in FIG.

  A deadlock pin 25 is accommodated in the upper part of the lock guide 19 constituting the steering lock device 5 so as to be movable in the vertical direction which is the radial direction of the lock guide 19. One end of the deadlock pin 25 is formed in a thin cylindrical locking portion 25a and is disposed downward. A spring accommodating portion 43 for accommodating the spring 35 is recessed in the other end. ing. In FIG. 5, since the spring 35 is locked by the deadlock plate 37 in a biased state, the locking portion 25 a is not inserted into the locking groove 23 of the rod member 21.

  Further, as shown in FIG. 5, the deadlock pin 25 is disposed at the upper portion in the radial direction of the lock guide 19, and the upper surface of the lock guide 19 in which the deadlock pin 25 is accommodated is an upward projecting protruding portion. The projecting portion 45 is accommodated in a recess 47 formed in the extension portion 13 of the column bracket 9.

 Furthermore, as shown in FIG. 6, the thickness of the lock guide 19 on the lower side in the radial direction is larger than the thickness on the upper side of the radial direction. In particular, the thickness on the lower side of the arrangement portion of the deadlock pin 25 is formed to be thicker than the thickness on the upper side in the radial direction.

  Hereinafter, an operation procedure and an effect will be briefly described.

  In a state where the key rotor 29 of the cylinder lock 15 is rotated to the locking position, the rod member 21 is engaged with the lock groove on the outer peripheral surface of the steering shaft, so that the steering shaft is prevented from rotating. On the other hand, when the key rotor 29 of the cylinder lock 15 is rotated to the unlocked position, the engagement between the rod member 21 and the lock groove on the outer peripheral surface of the steering shaft is released, and the steering shaft is allowed to rotate. .

  Here, in the conventional case, for example, a rental car is rented, a strong magnet is pressed in the vicinity of the portion where the deadlock pin 25 is disposed, and the deadlock pin 25 is placed on the upper end of the accommodation hole 33 against the urging force of the spring 35. If arranged, even if an impact is applied to the lock body 17 or the lock guide 19, the deadlock pin 25 may not be locked in the locking groove 23 of the rod member 21. Moreover, there is a possibility that the deadlock pin 25 can be removed by damaging the portion where the deadlock pin 25 is disposed.

  However, according to the present embodiment, it is impossible to press the magnet near the deadlock pin 25 or damage the arrangement portion of the deadlock pin 25. become unable.

  According to the embodiment of the present invention, the following operational effects are obtained.

  The side portion of the column bracket 9 that rotatably accommodates and holds the steering shaft is extended toward the lock guide 19, and the extension portion 13 is used to arrange a deadlock member (deadlock pin 25) in the lock guide 19. Covers the section. For this reason, since it becomes impossible to press a magnet near the deadlock pin 25 or damage the arrangement portion of the deadlock pin 25, it is possible to reliably prevent theft of the vehicle as described above. it can.

  The arrangement portion of the deadlock member (deadlock pin 25) is positioned at the upper portion in the radial direction of the lock guide 19, and is configured to cover the extension portion 13 of the column bracket 9 from the upper side of the arrangement portion. . Therefore, it is very difficult to take a means for applying a magnet to the placement portion of the deadlock pin 25 from the upper side or causing damage from the upper side.

  Since the thickness of the lock guide 19 on the lower side in the radial direction is formed to be thicker than the thickness on the upper side in the radial direction, a magnet is applied to the placement portion of the deadlock pin 25 from the upper side, or it is damaged from the lower side. It is very difficult to take measures to make it happen.

  The deadlock disposition portion of the lock guide 19 is bulged upward to provide a protruding portion 45, and the extension portion 13 of the column bracket 9 is provided with a recess, and the protruding portion 45 of the lock guide 19 is connected to the column bracket 9. Therefore, the height of the steering lock device 5 can be arranged upward, and the space below the steering lock device 5 can be efficiently used.

It is a perspective view which shows the front part in the vehicle interior which arrange | positioned the steering lock apparatus by embodiment of this invention. 1 is a perspective view showing a steering lock device and a column bracket according to an embodiment of the present invention. It is a top view which shows the steering lock apparatus by embodiment of this invention. 1 is an exploded perspective view of a steering lock device according to an embodiment of the present invention. It is sectional drawing by the AA line of FIG. It is sectional drawing by the BB line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 ... Steering lock apparatus 9 ... Column bracket 11 ... Column main-body part 13 ... Extension part 15 ... Cylinder lock 17 ... Lock main body 19 ... Lock guide 19a ... Tip 21 ... Rod member 25 ... Deadlock pin (deadlock member)
45 ... projecting portion 47 ... concave

Claims (3)

A cylindrical lock main body having a cylinder lock that is rotated, a cylindrical lock guide extending from the lock main body toward the steering shaft, and slidably housed in the lock guide in the axial direction. A rod member that protrudes from the tip of the guide and engages with a lock groove on the outer peripheral surface of the steering shaft, and is locked in the lock guide while being urged so as to be movable in the radial direction. And a deadlock member that is unlocked when an impact load is input to prevent sliding of the rod member, and locks a side portion of the column bracket that rotatably accommodates and holds the steering shaft. The extension portion covers the arrangement portion of the deadlock member in the lock guide from the upper side by the extension portion ,
An arrangement portion of the deadlock member of the lock guide bulges upward to form a projecting portion, a deadlock member is disposed in the projecting portion, and the rod member is disposed below the deadlock member. On the other hand, the steering lock device is characterized in that a recessed portion that is recessed upward is provided in an extension portion of the column bracket, and the protruding portion of the lock guide is accommodated in the recessed portion .   2. The configuration according to claim 1, wherein the arrangement portion of the deadlock member is positioned at an upper portion in a radial direction of the lock guide and covers an extension portion of the column bracket from above the arrangement portion. Steering lock device.   The steering lock device according to claim 2, wherein the thickness of the lock guide on the lower side in the radial direction is formed to be thicker than the thickness on the upper side in the radial direction.

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