JP2007247314A - Steering lock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the illegal release of a steering lock state. <P>SOLUTION: In the steering lock device 10, when a key rotor 24 is arranged in a lock position and an ignition key 28 is pulled out of the key rotor 24, a lock bar 48 and a lock slider 52 are arranged into the lock position to lock the rotation of a steering shaft. A projecting part 60 of a lever stopper 54 is locked to a protruding part 22 of a rotor case 18 to prevent the forward movement of the lock slider 52. The movement of the lock bar 48 and lock slider 52 from the lock position into an unlock position can thereby be prevented. Consequently, even if forward moving force is illegally applied to the lock bar 48 and lock slider 52, the lock slider 52 and lock bar 48 cannot be moved from the lock position into the unlock position, thus preventing the illegal release of the steering lock state. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a steering lock device that locks rotation of a steering shaft.

  As a steering lock device, when the key rotor into which the key is inserted is rotated to the “LOCK” position, the lock bar is moved together with the slider by the urging force of the coil spring and engaged with the steering shaft, and the rotation of the steering shaft is prevented. Some are locked (steering locked) (see, for example, Patent Document 1).

Here, in such a steering lock device, the lock bar and the slider cannot be moved against the urging force of the coil spring even if a movement force is improperly applied to at least one of the lock bar and the slider. Thus, it is preferable that the steering lock state can be prevented from being illegally released.
JP 2004-314745 A

  In view of the above facts, an object of the present invention is to provide a steering lock device that can prevent unauthorized release of the steering lock state.

  The steering lock device according to claim 1 is operable by operating a key inserted into a key cylinder, and the first operation position in which the key can be inserted into and removed from the key cylinder; An operation member that is displaceable at a second operation position where insertion and removal of the key with respect to the key cylinder are restricted, and a movable member, the operation member is disposed at the first operation position, and the key is When the steering shaft is extracted from the key cylinder, the steering shaft is locked and the rotation of the steering shaft is locked. When the operating member is positioned at the second operating position, the steering shaft is positioned and unlocked. When the operation member is arranged at the first operation position and the key is removed from the key cylinder. Blocking means for preventing the movement of the moving member from the locked position to the unlocked position, and permitting movement of the moving member from the locked position to the unlocked position when the key is inserted into the key cylinder; It has.

  A steering lock device according to a second aspect of the present invention is the steering lock device according to the first aspect, wherein the blocking means is provided in the moving member, the operation member is disposed at a first operation position, and the key is When the operation member is extracted from the operation member, the movement member is prevented from moving from the lock position to the unlock position, and the operation member is operated from the first operation position to the second operation position. In this case, the moving member is moved by the operation member, and the moving member is moved from the locked position to the unlocked position.

  A steering lock device according to a third aspect of the present invention is the steering lock device according to the first or second aspect, wherein when the operation member is disposed at the first operation position, the movable member is unlocked from the unlock position. It is characterized by having permission means for permitting movement to.

  In the steering lock device according to the first aspect, the operation member can be operated by operating the key inserted into the key cylinder, and the operation member can insert and remove the key from the key cylinder. The first operation position and the second operation position where the insertion and removal of the key from the key cylinder are restricted can be arranged. Further, when the operating member is disposed at the first operation position and the key is removed from the key cylinder, the moving member is disposed at the lock position and the rotation of the steering shaft is locked, and the operation member is operated at the second operation position. When arranged at the position, the moving member is arranged at the unlocked position and the rotation of the steering shaft is permitted.

  Here, when the operating member is arranged at the first operating position and the key is removed from the key cylinder, the blocking means prevents the moving member from moving from the locked position to the unlocked position. For this reason, even if a moving force is improperly applied to the moving member, the moving member cannot be moved from the locked position to the unlocked position, and the state in which the rotation of the steering shaft is locked (steering locked state) is illegal. It can be prevented from being released.

  Further, when the key is inserted into the key cylinder, the blocking means allows the movement member to move from the locked position to the unlocked position. For this reason, when the operation member is arranged at the second operation position, the moving member can be arranged at the unlock position.

  In the steering lock device according to claim 2, the moving member is provided with the moving portion, and the moving portion moves when the operating member is arranged at the first operation position and the key is removed from the operating member. The movement member is prevented from moving from the locked position to the unlocked position.

  Here, when the operating member is operated from the first operating position to the second operating position, the moving unit is moved by the operating member, and the moving member is moved from the locked position to the unlocked position. For this reason, it is possible to move the moving member from the locked position to the unlocked position with a simple configuration.

  In the steering lock device according to the third aspect, when the operation member is disposed at the first operation position, the permission unit permits the movement of the moving member from the unlock position to the lock position. For this reason, the moving member can be moved from the unlock position to the lock position.

[First Embodiment]
FIG. 1 shows a cross-sectional view of a steering lock device 10 for a vehicle according to a first embodiment of the present invention as seen from the left side. FIG. 5 shows the main part of the steering lock device 10. It is shown in the exploded perspective view seen from the front diagonal left. In the drawing, the front of the steering lock device 10 is indicated by an arrow FR, and the upper portion of the steering lock device 10 is indicated by an arrow UP.

  The steering lock device 10 according to the present embodiment includes a lock body 12. A fixed piece 12A is formed on the lower side of the rear end of the lock body 12, and the lock body 12 is fixed to the steering post by fixing the fixed piece 12A to the outer periphery of the steering post of the vehicle. .

  A substantially cylindrical storage cylinder 14 is formed on the upper portion of the lock body 12, and a rear wall 14 </ b> A is provided on the rear surface of the storage cylinder 14.

  A substantially cylindrical ignition cylinder 16 as a key cylinder is accommodated (mounted) in the front portion of the accommodating cylinder 14.

  A substantially cylindrical rotor case 18 is provided on the outer peripheral portion of the ignition cylinder 16, and the front end of the rotor case 18 projects forward from the front end of the storage cylinder 14. The front end of the rotor case 18 is disposed on a column cover (not shown) of the vehicle, whereby the front surface of the ignition cylinder 16 is directed from the column cover to the vehicle interior.

  A substantially rectangular columnar outer slide piece 20 is movably penetrated at the lower front part of the rotor case 18, and the outer slide piece 20 is moved downward (outer in the radial direction of the rotor case 18) by the rotor case 18. In a locked state, it protrudes downward from the rotor case 18. Further, the outer slide piece 20 is inclined in a direction toward the rear as the lower front surface goes downward, and is inclined in a direction toward the front as the lower rear surface goes downward.

  As shown in detail in FIGS. 6 and 7, at the rear end of the rotor case 18, a pair of convex portions 22 having a substantially inverted triangular cross section are formed at the lower end, and the pair of convex portions 22 are respectively formed in the rotor case 18. And rearwardly arranged in the front-rear direction (the rear surface of the rear projection 22 constitutes the rear surface of the rotor case 18). The rear surface of the convex portion 22 is a blocking surface 22A constituting blocking means, and the blocking surface 22A is perpendicular to the front-rear direction. The front surface of the convex part 22 is made into the permission surface 22B which comprises a permission means, and the permission surface 22B is inclined in the direction which goes back as it goes below.

  A substantially cylindrical key rotor 24 is accommodated in the rotor case 18. An insertion hole 26 is formed in the key rotor 24, and the insertion hole 26 is opened from the front surface of the key rotor 24. The key rotor 24 is disposed at a “LOCK” position as a first operation position, and an ignition key 28 as a key can be inserted into and removed from the insertion hole 26. The key rotor 24 is made rotatable in the rotor case 18 by the ignition key 28 being inserted into the insertion hole 26 and being rotated, whereby the key rotor 24 is moved to “ACC” as the second operation position. ”Position,“ ON ”position, and“ START ”position. The ignition key 28 can be inserted into and removed from the insertion hole 26 only when the key rotor 24 is placed in the “LOCK” position. The key rotor 24 is in the “ACC” position, the “ON” position, and the “START” position. When arranged in the position, insertion and extraction of the ignition key 28 into the insertion hole 26 are restricted.

  A substantially U-shaped frame-like inner slide piece 30 (see FIG. 4) is provided below the front portion of the key rotor 24 so as to be movable in the radial direction of the key rotor 24. Part) is disposed in the insertion hole 26. The lower surface (the outer surface in the radial direction of the key rotor 24) of the inner slide piece 30 is curved along the outer peripheral surface of the key rotor 24, and the inner slide piece 30 is rotatable together with the key rotor 24. The inner slide piece 30 is opposed to the outer slide piece 20 of the rotor case 18, so that the ignition key 28 is disposed in the inner slide piece 30 in a state where the ignition key 28 is inserted into the insertion hole 26. By preventing the inner slide piece 30 from moving upward (inward in the radial direction of the key rotor 24), the inner slide piece 30 prevents the outer slide piece 20 from moving upward.

  A substantially cylindrical cam shaft 32 as an operating member is provided in the storage cylinder 14 on the rear side of the ignition cylinder 16, and the cam shaft 32 is fitted to the rear portion of the key rotor 24 at the front end, so that the key rotor 24 and the “LOCK” position. The camshaft 32 can be rotated (operated) integrally with the key rotor 24, and the camshaft 32 can be disposed together with the key rotor 24 in the “ACC” position, the “ON” position, and the “START” position. The key rotor 24 is movable rearward with respect to the camshaft 32, and a compression coil spring 34 as a rotor urging means is bridged between the front end of the camshaft 32 and the rear portion of the key rotor 24. The compression coil spring 34 urges the key rotor 24 forward.

  A concave portion 36 (see FIG. 2) having a trapezoidal cross section in plan view is formed in the lower portion of the peripheral portion of the camshaft 32, and the concave portion 36 is opened forward and downward. The right side surface of the recess 36 is an inclined surface 38, and the inclined surface 38 is inclined in the direction toward the right as it goes forward.

  In the camshaft 32, a coil spring 40 is provided as a rotation urging means on the radially inner side from the recess 36. One end of the coil spring 40 is locked to the storage cylinder 14, and When the other end is locked to the camshaft 32, the camshaft 32 is urged together with the key rotor 24 from the “START” position to the “LOCK” position via the “ON” position and the “ACC” position. Yes.

  The camshaft 32 is provided with a connecting rod 42 at the central axis portion, and the connecting rod 42 is rotatable integrally with the camshaft 32.

  An ignition switch (not shown) is fixed to the rear side of the rear wall 14 </ b> A of the storage cylinder 14. A connecting rod 42 of the camshaft 32 is connected to the ignition switch, and the ignition switch can be operated by rotating the key rotor 24 and rotating the camshaft 32 and the connecting rod 42 together.

  The lower portion of the lock body 12 is formed with a communication tube 44 having a substantially U-shaped cross section as a communication portion on the lower side of the storage tube 14, and as a guide portion on the lower side and the rear side of the storage tube 14. A guide tube 46 having a substantially rectangular tube shape is formed. The communication tube 44 is connected to the upper storage tube 14 and the rear guide tube 46, and the guide tube 46 is a fixed piece of the lock body 12. 12A is opened to the rear side.

  A substantially rectangular columnar lock bar 48 as a lock member is accommodated in the guide tube 46, and the lock bar 48 is guided by the guide tube 46 so as to be movable in the front-rear direction. . A compression coil spring 50 serving as a lock urging means is bridged between the front portion of the lock bar 48 and the inner surface of the communication tube 44, and the lock bar 48 is urged rearward by the compression coil spring 50. As a result, the lock bar 48 protrudes from the fixed piece 12A to the outside of the lock body 12 and is engaged with a steering shaft (not shown) in the steering post via the steering post. Yes. Thereby, the rotation of the steering shaft is locked, and the rotation of the steering wheel fixed to the upper end of the steering shaft is locked.

  A columnar lock slider 52 (plate lock) as a moving member is accommodated in the communication tube 44 so as to be movable in the front-rear direction. The rear end of the lock slider 52 is hooked on the front end of the lock bar 48, and the lock slider 52 is movable in the front-rear direction together with the lock bar 48 and is disposed at the lock position together with the lock bar 48. .

  As shown in detail in FIGS. 6 and 7, a lever stopper 54 as a moving part is provided separately at the rear part of the lock slider 52, and the lever stopper 54 is rotatable around the rear part. Yes. Between the lever stopper 54 and the lock slider 52, a compression coil spring 56 is suspended as a stopper urging means constituting a blocking means, and the compression coil spring 56 rotates the lever stopper 54 upward. And the front end of the lever stopper 54 is engaged with the lock slider 52, so that the lever stopper 54 is disposed substantially horizontally.

  A columnar contact column 58 as a contact portion is formed at the upper end of the rear portion of the lever stopper 54, and the contact column 58 protrudes upward from the lever stopper 54. The inclined surface 38 of the camshaft 32 is brought into contact with the contact column 58 by the urging force of the coil spring 40, whereby the camshaft 32 is prevented from rotating, and the key rotor 24 and the camshaft 32 are moved as described above. It is arranged at the “LOCK” position.

  In the vicinity of the front end of the lever stopper 54, a protruding portion 60 having a substantially triangular cross section is formed at the upper end, and the protruding portion 60 protrudes upward from the lever stopper 54. The front surface of the projecting portion 60 is a contact surface 60A that constitutes a blocking means. The contact surface 60A is perpendicular to the front-rear direction and faces the blocking surface 22A of the convex portion 22 of the rotor case 18 at the rear. is doing. The rear surface of the projecting portion 60 is a moving surface 60B that constitutes a permission means, and the moving surface 60B is inclined in a direction toward the rear as it goes downward.

  A lock piece 62 is separately provided at the front end of the lock slider 52, and the lock piece 62 is engaged with the lock slider 52 at the rear end and the intermediate portion in the front-rear direction, and is located on the upper side with the rear end substantially at the center. The rotation to is locked. In the vicinity of the rear end of the lock piece 62, the lock slider 52 holds a central portion of a torsion coil spring 64 as a holding biasing means. One end of the torsion coil spring 64 is below the front side of the lock piece 62. While being locked, the other end is locked to the lower side of the front end of the lock slider 52. As a result, the lock piece 62 is held by the urging force of the torsion coil spring 64 in a state in which the lock piece 62 can rotate downward about the rear end about the rear end, and the lock piece 62 is held by the outer slide piece 20 of the rotor case 18. It faces the lower part at the rear.

  Next, the operation of the present embodiment will be described.

  In the steering lock device 10 having the above configuration, the key rotor 24 and the camshaft 32 are disposed at the “LOCK” position, the lock slider 52 and the lock bar 48 are disposed at the lock position, and the lock bar 48 is engaged with the steering shaft. Thus, the rotation of the steering shaft and the steering wheel is locked.

  Further, when the ignition key 28 is inserted into the insertion hole 26 of the key rotor 24 and rotated, the key rotor 24 and the camshaft 32 are disposed at the “ACC” position, the “ON” position, and the “START” position. Then, the connecting rod 42 is rotated integrally with the camshaft 32, and the ignition switch is operated.

  As shown in FIG. 2, when the key rotor 24 and the camshaft 32 are rotated from the “LOCK” position to the “ACC” position, the inclined surface 38 of the camshaft 32 is rotated and the contact column 58 of the lever stopper 54 is moved. By pushing forward, the lever stopper 54 is moved forward in a state where it is rotated downward by a predetermined angle against the urging force of the compression coil spring 56, and the lock slider 52 and the lock bar 48 are moved to the compression coil spring. It is moved forward against 50 biasing forces. For this reason, when the key rotor 24 and the camshaft 32 are disposed at the “ACC” position, the lock bar 48 and the lock slider 52 are disposed at the front unlock position, and the lock bar 48 is engaged with the steering shaft. Is released. Thereby, rotation of a steering shaft and a steering wheel is permitted.

  Further, when the key rotor 24 and the camshaft 32 are rotated from the “LOCK” position to the “ACC” position, the lever stopper 54 is moved forward in a state where the lever stopper 54 is rotated downward by a predetermined angle as described above. Thus, the protrusion 60 of the lever stopper 54 is disposed on the front side of the pair of protrusions 22 so as to overcome the pair of protrusions 22 (only the protrusions 22 on the rear side) of the rotor case 18. In addition, as described above, the lock slider 52 is moved forward, and the lock piece 62 at the front end of the lock slider 52 is temporarily rotated downward about the rear end substantially against the biasing force of the torsion coil spring 64. However, when the front end of the lock piece 62 gets over the outer slide piece 20 of the rotor case 18, the front end of the lock piece 62 is disposed on the front side of the outer slide piece 20.

  Further, when the key rotor 24 and the camshaft 32 are disposed at the “ACC” position, the contact column 58 of the lever stopper 54 is engaged with the front surface 32 </ b> A of the camshaft 32 by the urging force of the compression coil spring 50 and the compression coil spring 56. Stopped. As a result, when the key rotor 24 and the camshaft 32 are arranged in the range of the “START” position from the “ACC” position via the “ON” position, the contact column 58 of the lever stopper 54 is positioned on the front surface 32A of the camshaft 32. The lock bar 48 and the lock slider 52 are disposed in the unlocked position against the urging force of the compression coil spring 50 by preventing the lever stopper 54 from moving backward. And permission to rotate the steering wheel is maintained.

  On the other hand, as shown in FIG. 3, when the key rotor 24 and the camshaft 32 are rotated from the “ACC” position to the “LOCK” position, the ignition key 28 moves inwardly in the key rotor 24 radial direction of the inner slide piece 30 of the key rotor 24. The inner slide piece 30 prevents the outer slide piece 20 of the rotor case 18 from moving upward. Therefore, even if the key rotor 24 and the camshaft 32 are rotated and the locking of the contact column 58 of the lever stopper 54 to the front surface 32A of the camshaft 32 is released, the front end of the lock piece 62 of the lock slider 52 is the outer slide piece. By being locked by 20, the lock bar 48 and the lock slider 52 are disposed at the unlocked position against the urging force of the compression coil spring 50, and the permission of rotation of the steering shaft and the steering wheel is maintained.

  Further, when the key rotor 24 and the camshaft 32 are rotated from the “ACC” position to the “LOCK” position, the locking of the contact column 58 of the lever stopper 54 to the front surface 32A of the camshaft 32 is released, and the lever When the stopper 54 is rotated upward by the urging force of the compression coil spring 56, the moving surface 60B of the protrusion 60 of the lever stopper 54 may be the front protrusion 22 (the rear protrusion 22 of the rotor case 18). ) Of the permission surface 22B.

  As shown in FIG. 4, when the key rotor 24 and the camshaft 32 are disposed at the “LOCK” position and the ignition key 28 is removed from the insertion hole 26 of the key rotor 24, the diameter of the key rotor 24 of the inner slide piece 30 is increased. When the outer slide piece 20 is allowed to move upward and the outer slide piece 20 is allowed to move upward, the outer side of the front end of the lock piece 62 is moved by the inclination of the lower front surface of the outer slide piece 20 and the biasing force of the compression coil spring 50. The locking to the slide piece 20 is released by the upward movement of the outer slide piece 20, and the lock bar 48 and the lock slider 52 are moved to the rear side. Moreover, the lever stopper 54 temporarily moves downward against the urging force of the compression coil spring 56 due to the inclination of the moving surface 60B of the protruding portion 60 of the lever stopper 54 and the permission surface 22B of the convex portion 22 of the rotor case 18. By rotating, the protruding portion 60 of the lever stopper 54 is not locked to the convex portion 22 of the rotor case 18, and the rearward movement of the lock slider 52 and the lock bar 48 is not prevented. Thereby, the lock bar 48 and the lock slider 52 are disposed at the lock position and engaged with the steering shaft, so that the rotation of the steering shaft and the steering wheel is locked.

  Here, when the key rotor 24 and the camshaft 32 are disposed at the “LOCK” position and the ignition key 28 is removed from the insertion hole 26 of the key rotor 24, the contact surface 60A of the protrusion 60 of the lever stopper 54 is The rotor case 18 is locked on the blocking surface 22A of the rear convex portion 22 (or may be the front convex portion 22), and the forward movement of the lock slider 52 and the lock bar 48 is prevented, thereby locking. The movement of the bar 48 and the lock slider 52 from the locked position to the unlocked position can be prevented. For this reason, even if an improper forward moving force is applied to the lock bar 48 and the lock slider 52, the lock slider 52 and the lock bar 48 cannot be moved from the lock position to the unlock position. It is possible to prevent the state in which the rotation of the wheel is locked (the steering lock state) from being illegally released.

  In addition, the lever stopper 54 having a function of preventing the steering lock state from being illegally released is moved forward by the rotation of the camshaft 32 from the “LOCK” position to the “ACC” position, and the lock slider 52 and the lock stopper 52 are locked. It also has a function of moving the bar 48 from the locked position to the unlocked position. For this reason, it can be set as a simple structure.

  In the present embodiment, the moving surface 60B of the protruding portion 60 of the lever stopper 54 and the permission surface 22B of the convex portion 22 of the rotor case 18 are inclined with respect to the front-rear direction. One of the moving surface 60B of the portion 60 and the permission surface 22B of the convex portion 22 of the rotor case 18 may be configured to be perpendicular to the front-rear direction.

[Second Embodiment]
FIG. 8A shows a front view of the main part of the steering lock device 70 for a vehicle according to the second embodiment of the present invention as seen from the front, and FIG. The main part of the steering lock device 70 is shown in a sectional view as seen from the left. In the drawing, the front of the steering lock device 70 is indicated by an arrow FR, and the upper portion of the steering lock device 70 is indicated by an arrow UP.

  The steering lock device 70 according to the present embodiment has substantially the same configuration as that of the first embodiment, but differs in the following points.

  In the steering lock device 70 according to the present embodiment, the lever stopper 54 in the first embodiment is not provided.

  The recess 36 of the camshaft 32 is provided with a substantially rectangular columnar projection 72 on the bottom surface (inner side surface in the radial direction of the camshaft 32). The projection 72 extends along the front-rear direction at the center in the left-right direction of the recess 36. And spaced apart from the rear surface of the recess 36. The rear surface of the protrusion 72 is a blocking surface 72A that forms blocking means, and the blocking surface 72A is perpendicular to the front-rear direction. The front surface of the protrusion 72 is a permission surface 72B that constitutes permission means, and the permission surface 72B is inclined in a direction toward the rear as it goes downward.

  A substantially rectangular columnar arrangement hole 74 is formed in the rear part of the lock slider 52. The arrangement hole 74 is opened from the upper surface of the lock slider 52, and the cross-sectional area of the upper end 74A is made equal to the cross-sectional area of the other part. Compared to the entire circumference, it is made smaller.

  A moving body 76 having a substantially rectangular column shape as a moving portion is provided in the arrangement hole 74, and the moving body 76 is movable in the vertical direction within the arrangement hole 74. A flange portion 76 </ b> A is integrally formed at the lower end of the moving body 76, and the flange portion 76 </ b> A protrudes outward from the entire circumference of the moving body 76 and is fitted in the arrangement hole 74. The front surface of the moving body 76 is a contact surface 76B that constitutes blocking means, and the contact surface 76B is perpendicular to the front-rear direction. The rear surface of the upper end of the moving body 76 is a moving surface 76C that constitutes a permission means, and the moving surface 76C is inclined in a direction toward the rear as it goes downward.

  Between the lower surface of the arrangement hole 74 and the lower surface of the moving body 76, a compression coil spring 78 is suspended as a stopper urging means constituting a blocking means, and the compression coil spring 78 moves the moving body 76 upward. At the same time, the flange 76A of the moving body 76 is locked to the upper end 74A of the arrangement hole 74, so that the moving body 76 protrudes upward from the lock slider 52 and opposes the protrusion 72 at the rear. .

  Next, the operation of the present embodiment will be described.

  In the steering lock device 70 having the above configuration, the key rotor 24 and the camshaft 32 are disposed at the “LOCK” position, the lock slider 52 and the lock bar 48 are disposed at the lock position, and the lock bar 48 is engaged with the steering shaft. Thus, the rotation of the steering shaft and the steering wheel is locked.

  Further, when the ignition key 28 is inserted into the insertion hole 26 of the key rotor 24 and rotated, the key rotor 24 and the camshaft 32 are disposed at the “ACC” position, the “ON” position, and the “START” position. Then, the connecting rod 42 is rotated integrally with the camshaft 32, and the ignition switch is operated.

  As shown in FIGS. 9A and 9B, when the key rotor 24 and the camshaft 32 are rotated from the “LOCK” position to the “ACC” position, the inclined surface 38 of the camshaft 32 is rotated, By pressing the movable body 76 of the lock slider 52 forward, the movable body 76 is moved forward, and the lock slider 52 and the lock bar 48 are moved forward against the urging force of the compression coil spring 50. For this reason, when the key rotor 24 and the camshaft 32 are disposed at the “ACC” position, the lock bar 48 and the lock slider 52 are disposed at the front unlock position, and the lock bar 48 is engaged with the steering shaft. Is released. Thereby, rotation of a steering shaft and a steering wheel is permitted.

  Further, when the key rotor 24 and the camshaft 32 are rotated from the “LOCK” position to the “ACC” position, the projecting portion 72 of the camshaft 32 is rotated to the left, and the moving body 76 moved forward is projected. By passing the right side of the portion 72, the moving body 76 is disposed on the front side of the protruding portion 72. In addition, as described above, the lock slider 52 is moved forward, and the lock piece 62 at the front end of the lock slider 52 is temporarily rotated downward about the rear end substantially against the biasing force of the torsion coil spring 64. However, when the front end of the lock piece 62 gets over the outer slide piece 20 of the rotor case 18, the front end of the lock piece 62 is disposed on the front side of the outer slide piece 20.

  When the key rotor 24 and the camshaft 32 are disposed at the “ACC” position, the moving body 76 of the lock slider 52 is locked to the front surface 32 </ b> A of the camshaft 32 by the urging force of the compression coil spring 50. As a result, when the key rotor 24 and the camshaft 32 are arranged in the range of the “START” position from the “ACC” position via the “ON” position, the moving body 76 of the lock slider 52 is moved to the front surface 32A of the camshaft 32. As a result, the lock bar 48 and the lock slider 52 are arranged at the unlocked position against the biasing force of the compression coil spring 50, and the permission of rotation of the steering shaft and the steering wheel is maintained.

  On the other hand, when the key rotor 24 and the camshaft 32 are rotated from the “ACC” position to the “LOCK” position, the ignition key 28 prevents the inner slide piece 30 of the key rotor 24 from moving inward in the radial direction of the key rotor 24. The inner slide piece 30 prevents the rotor case 18 from moving to the upper side of the outer slide piece 20. For this reason, even if the key rotor 24 and the camshaft 32 are rotated and the locking body 52 of the lock slider 52 is released from being locked to the front surface 32A of the camshaft 32, the front end of the lock piece 62 of the lock slider 52 is the outer slide piece. By being locked by 20, the lock bar 48 and the lock slider 52 are disposed at the unlocked position against the urging force of the compression coil spring 50, and the permission of rotation of the steering shaft and the steering wheel is maintained.

  When the key rotor 24 and the camshaft 32 are arranged at the “LOCK” position and the ignition key 28 is removed from the insertion hole 26 of the key rotor 24, the inner slide piece 30 moves inward in the radial direction of the key rotor 24. When the outer slide piece 20 is permitted to move upward, the engagement of the front end of the lock piece 62 to the outer slide piece 20 due to the inclination of the lower front surface of the outer slide piece 20 and the biasing force of the compression coil spring 50 is permitted. The stop is released by moving the outer slide piece 20 upward, and the lock bar 48 and the lock slider 52 are moved rearward. Moreover, as shown in FIGS. 10A and 10B and FIG. 11, the moving body 76 is moved by the inclination of the moving surface 76 </ b> C of the moving body 76 of the lock slider 52 and the permission surface 72 </ b> B of the protrusion 72 of the camshaft 32. By temporarily moving downward against the urging force of the compression coil spring 78, the moving body 76 of the lock slider 52 is not locked to the protrusion 72 of the camshaft 32, and the lock slider 52 and the lock bar 48. The rearward movement is not prevented. Thereby, the lock bar 48 and the lock slider 52 are disposed at the lock position and engaged with the steering shaft, so that the rotation of the steering shaft and the steering wheel is locked.

  Here, as shown in FIGS. 8A and 8B, when the key rotor 24 and the camshaft 32 are disposed at the “LOCK” position and the ignition key 28 is removed from the insertion hole 26 of the key rotor 24. The contact surface 76B of the movable body 76 of the lock slider 52 is locked to the blocking surface 72A of the protrusion 72 of the camshaft 32, and the forward movement of the lock slider 52 and the lock bar 48 is blocked. The movement of the lock bar 48 and the lock slider 52 from the locked position to the unlocked position can be prevented. For this reason, even if an improper forward moving force is applied to the lock bar 48 and the lock slider 52, the lock slider 52 and the lock bar 48 cannot be moved from the lock position to the unlock position. It is possible to prevent the state in which the rotation of the wheel is locked (the steering lock state) from being illegally released.

  In addition, the moving body 76 having a function of preventing the steering lock state from being illegally released is moved forward by the rotation of the camshaft 32 from the “LOCK” position to the “ACC” position, so that the lock slider 52 and the lock It also has a function of moving the bar 48 from the locked position to the unlocked position. For this reason, it can be set as a simple structure.

  In the present embodiment, the moving surface 76C of the moving body 76 of the lock slider 52 and the permission surface 72B of the protrusion 72 of the camshaft 32 are inclined with respect to the front-rear direction. One of the moving surface 76C of the body 76 and the protrusion 72 of the camshaft 32 may be configured to be perpendicular to the front-rear direction.

It is sectional drawing seen from the left which shows the state by which the key rotor and camshaft in the steering lock apparatus which concerns on the 1st Embodiment of this invention are arrange | positioned in the "LOCK" position, and the ignition key was inserted in the key rotor. It is sectional drawing seen from the left which shows the state in which the key rotor and camshaft in the steering lock apparatus which concern on the 1st Embodiment of this invention are arrange | positioned in the "ACC" position. It is sectional drawing seen from the left which shows the state in which the key rotor and camshaft in the steering lock apparatus which concerns on the 1st Embodiment of this invention were rotated from the "ACC" position to the "LOCK" position. It is sectional drawing seen from the left which shows the state by which the key rotor and camshaft in the steering lock device concerning a 1st embodiment of the present invention are arranged in a "LOCK" position, and the ignition key was extracted by the key rotor. It is the disassembled perspective view seen from the front diagonal left which shows the principal part of the steering lock device concerning a 1st embodiment of the present invention. The key rotor and the camshaft in the steering lock device according to the first embodiment of the present invention are arranged at the “LOCK” position, and the main part in a state where the ignition key is inserted or removed from the key rotor is viewed from the left side. FIG. The key rotor and the camshaft in the steering lock device according to the first embodiment of the present invention are arranged at the “LOCK” position, and the main part in a state where the ignition key is inserted or removed from the key rotor is viewed from the left side. FIG. (A) and (B) are states in which the key rotor and the camshaft in the steering lock device according to the second embodiment of the present invention are arranged at the “LOCK” position and the ignition key is inserted or removed from the key rotor. (A) is the front view seen from the front, (B) is sectional drawing seen from the left. (A) And (B) is a figure which shows the principal part of the state in which the key rotor and cam shaft in the steering lock apparatus which concern on the 2nd Embodiment of this invention are rotated from a "LOCK" position to an "ACC" position. Yes, (A) is a front view as seen from the front, and (B) is a cross-sectional view as seen from the left. (A) and (B) are the main parts when the key rotor and the camshaft in the steering lock device according to the second embodiment of the present invention are arranged at the “LOCK” position and the ignition key is extracted from the key rotor. (A) is the front view seen from the front, (B) is sectional drawing seen from the left. The key rotor and the camshaft in the steering lock device according to the second embodiment of the present invention are arranged in the “LOCK” position, and the main part when the ignition key is extracted from the key rotor is viewed from the left side in detail. It is sectional drawing.

Explanation of symbols

10 Steering lock device 22A Blocking surface (blocking means)
22B permission surface (permission means)
16 Ignition cylinder (key cylinder)
28 Ignition key (key)
32 Camshaft (operation member)
52 Lock slider (moving member)
54 Lever stopper (moving part)
56 Compression coil spring (blocking means)
60A Contact surface (blocking means)
60B Moving surface (permission means)
70 Steering lock device 72A Blocking surface (blocking means)
72B Permit side (permission means)
76 Moving object (moving part)
76B Contact surface (blocking means)
76C Moving surface (permission means)
78 Compression coil spring (blocking means)

Claims (3)

A first operation position in which the key inserted into and removed from the key cylinder is enabled by the operation of a key inserted in the key cylinder, and the insertion and removal of the key from the key cylinder are restricted. An operation member which can be arranged at the second operation position to be operated;
The operation member is disposed at a first operation position, and when the key is removed from the key cylinder, the operation member is disposed at a lock position to lock the rotation of the steering shaft. A moving member that is disposed in the unlocked position and allowed to rotate the steering shaft when disposed in the second operation position;
The operation member is disposed at the first operation position, and when the key is removed from the key cylinder, the movement member is prevented from moving from the lock position to the unlock position, and the key is placed on the key cylinder. Blocking means for allowing movement of the moving member from the locked position to the unlocked position when inserted;
Steering lock device with   The blocking means is provided on the moving member, and when the operating member is disposed at the first operating position and when the key is extracted from the operating member, the blocking means is prevented from moving and unlocked from the locked position of the moving member. The movement to the lock position is prevented, and the operation member is moved by the operation member when the operation member is operated from the first operation position to the second operation position, and the movement member is moved from the lock position to the unlock position. The steering lock device according to claim 1, further comprising a moving part.   3. The apparatus according to claim 1, further comprising permission means for permitting movement of the moving member from the unlocked position to the locked position when the operating member is disposed at the first operating position. Steering lock device.

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