JP2015217765A - Steering lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steering lock device capable of maintaining a steering lock state against various fraudulent acts.SOLUTION: A steering lock device includes auxiliary lock means 60 for keeping a lock member 50 in a lock position by making a trigger body 71 displaced in a state in which the lock member 50 is located in the lock position. The trigger body 71 comprises a plurality of body members 75 and 76. Trigger urging means 72 for imparting an urging force to the body members 75 and 76 linked to the auxiliary lock means 60 is provided.

Description

  The present invention relates to a steering lock device that restricts rotation of a steering shaft of an automobile.

  As this type of conventional steering lock device, one disclosed in Patent Document 1 is known. FIG. 13 shows a configuration of the steering lock device 101 described in Patent Document 1. The steering lock device 101 includes a lock member 150 for prohibiting rotation of a steering shaft (not shown). The lock member 150 is disposed so as to be movable between a lock position where the tip of the lock member 150 protrudes from the frame 110 and a lock release position accommodated in the frame 110.

  The steering lock device 101 includes an auxiliary lock member 161 movably disposed between an engagement position and a non-engagement position, and a winding spring, and engages the auxiliary lock member 161 from the non-engagement position side. Auxiliary lock means 160 constituted by an auxiliary lock urging means 162 that urges toward the position side and a trigger body 171 that holds the auxiliary lock member 161 in the non-engagement position is provided. The auxiliary lock means 160 releases the engagement between the trigger main body 171 and the auxiliary lock member 161 by the trigger main body 171 falling off together with the cylinder cylindrical portion 117a when the cylinder cylindrical portion 117a is detached from the frame 110. The auxiliary lock member 161 is configured to engage with the auxiliary lock receiving portion 151 f of the lock member 150 by the urging force of the auxiliary lock urging means 162.

  By providing such an auxiliary lock means 160, the steering lock device 101 can be broken by the weak portion 117d and the cylinder tube portion 117a is dropped due to an unauthorized action in the locked state where the lock member 150 is located at the lock position. In addition, since the lock member 150 is held at the lock position, the steering lock state is held.

JP 2000-225922 A

  By the way, the configuration as described above has a problem that the auxiliary lock means 160 does not operate for an illegal act of removing the frame cover 20 and pulling out the cylinder lock 103.

  In consideration of the above circumstances, an object of the present invention is to provide a steering lock device that can maintain a steering lock state against various illegal acts.

  According to the first aspect of the present invention, which achieves the above object, a frame cover assembled to the frame and a guide hole provided in the frame are arranged to be slidable between a locked position and an unlocked position. A lock member, a trigger main body disposed so as to be displaceable, and auxiliary lock means for holding the lock member in the lock position by displacing the trigger main body in a state in which the lock member is located in the lock position; The trigger lock body comprises a plurality of main body members, and includes trigger urging means for applying a urging force to the main body member linked to the auxiliary lock means.

  The invention of claim 2 is the steering lock device according to claim 1, wherein the frame includes a weak portion having a lower strength than other portions, and the joint portion of the trigger body overlaps the weak portion. The size of the main body member is set.

  A third aspect of the present invention is the steering lock device according to the first or second aspect, wherein at least one of the main body members comprises a member in which two parallel round bar shafts are connected in a crank shape. It is characterized by being supported so as to be rotatable around an axis.

  A fourth aspect of the present invention is the steering lock device according to the third aspect, wherein the trigger lock means has a frame shape and includes a trigger link portion through which the main body member having a crank shape can penetrate the frame shape. Is arranged in the frame.

  According to the first aspect of the present invention, the trigger main body is composed of a plurality of main body members, and the trigger urging means is provided on the tip side so that when the frame is broken, the main body members are separated into the auxiliary lock means. Can be operated more reliably.

  Also, because the trigger body is composed of multiple body members, the frame cover can be dropped for various frame shapes, such as when the storage chamber formed by the frame and frame cover cannot be set on the extension of the lock member. In doing so, the auxiliary locking means can be activated.

  From the above, it is possible to maintain the steering lock state against various illegal acts.

  According to the invention of claim 2, by setting the dimensions of the trigger body so that the joint portion of the trigger body overlaps the weak part of the frame, the trigger is triggered when the frame breaks at the weak part due to fraud Since the linkage of the main body is surely released, the auxiliary lock means operates reliably.

  According to the invention of claim 3, since at least one of the main body parts has a crank shape, rotation around the axis disengages the link with the other main body member, so that an external force such as hitting the frame is applied. At this time, the linkage between the main body members is released due to the inertial force, the auxiliary lock means operates, and the lock member can be held in the locked position.

  According to the invention of claim 4, when an external force such as hitting the frame is applied to the steering lock device, a large inertial force is applied to the main body member via the trigger linking means. As a result, the main body member rotates about the axis and the linkage between the main body members is released, so that the auxiliary lock means can be operated more reliably.

It is a disassembled perspective view which shows 1st Embodiment of this invention and shows a steering lock apparatus. It is a side perspective view which shows the trigger in the locked state at the normal time, a trigger linkage means, and an auxiliary | assistant lock means. It is a front side perspective view which shows the trigger in the locked state at the normal time, a trigger linkage means, and an auxiliary | assistant lock means. It is a general | schematic perspective view which shows the internal structure (except an auxiliary | assistant locking means) in the locked state at the normal time. It is a general | schematic perspective view which shows the internal structure (except an auxiliary | assistant lock means) in the state which inserted the key at the time of locking. It is a general | schematic perspective view which shows the internal structure (except an auxiliary | assistant lock means) in the state which turned the inserted key and released the lock | rock. It is a general | schematic perspective view which shows the internal structure (except an auxiliary | assistant lock means) in the state which turned the inserted key back. It is a perspective view which shows the auxiliary | assistant locking means in the locked state at the normal time. It is a perspective view which shows the state which the frame cover removed from the locked state at the normal time. It is a perspective view which shows the state which the case part fell out from the locked state at the normal time. It is a perspective view which shows the auxiliary | assistant lock | rock means in the locked state at the time of normal about another aspect of 1st Embodiment. It is a perspective view which shows the trigger and auxiliary | assistant lock means in the normal locked state about 2nd Embodiment. It is sectional drawing which shows the steering lock apparatus of a prior art.

<First Embodiment>
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings. The steering lock device of the present embodiment is attached as a mechanical steering lock device 1 to a steering column device (not shown) that houses a steering shaft (not shown) of an automobile by a fixing means (not shown).

  As shown in FIGS. 1 to 10, the steering lock device 1 mainly includes a frame 10, a frame cover 20, a cylinder lock 3, an ignition switch 5, a lock member 50, auxiliary lock means 60, and a check mechanism 80. .

  The frame 10 is formed in a Y shape by three cylinder parts of a cylinder cylinder part 17a, a lock cylinder part 17b, and a switch cylinder part 17c. In this embodiment, in order to reduce the weight of the entire apparatus, the cylinder tube portion 17a and the switch tube portion 17c are integrally formed of a resin material, and the lock tube portion 17b is formed of a metal material. And the boundary part of the cylinder cylinder part 17a which consists of resin materials, and the lock cylinder part 17b which consists of metal materials is set to the weak part 17d whose mechanical strength is lower than the other site | part of the flame | frame 10. In the present embodiment, the cylinder hole of the lock cylinder part 17 b constitutes the guide hole 14 for guiding the lock member 50.

  The cylinder lock 3 and the check mechanism 80 are disposed in the cylinder tube portion 17a, the lock member 50 and the auxiliary lock means 60 are disposed in the lock tube portion 17b, and the ignition switch 5 is disposed in the switch tube portion 17c. . In addition, a linkage member 36 is disposed inside a portion where the three cylindrical portions 17a, 17b, and 17c are connected, and the cylinder lock 3, the lock member 50, and the ignition switch 5 are linked by the linkage member 36.

  The cylinder lock 3 is provided with a key hole 3a as an insertion portion into which a passenger carries and operates the key 7 at one end side, and a connecting portion 3b at the other end side. The cylinder lock 3 is disposed in the cylinder cylinder portion 17a so that the keyhole 3a is located at the tip end of the cylinder cylinder portion 17a on the opening end side in a state of being accommodated in the substantially cylindrical sleeve 3c. The cylinder lock 3 is unlocked only when the key 7 inserted into the keyhole 3a is a regular key 7, and the key 7 can be rotated around the axis together with the connecting portion 3b in the sleeve 3c. It is comprised so that. The connecting member 3b of the cylinder lock 3 is provided with a linking member 36 that moves together with the connecting portion 3b.

  The frame cover 20 is assembled to the opening end of the cylinder tube portion 17a, and forms a storage chamber as a storage space inside together with the cylinder tube portion 17a. And the cylinder lock 3 is arrange | positioned so that the key 7 inserted in the keyhole 3a can rotate in a storage chamber.

  The linking member 36 is made of a thick plate material having a disk shape, one surface side is connected to the connecting portion 3 b, and rotates around the axis of the cylinder lock 3 together with the cylinder lock 3. Further, a cam portion 40 is formed on the circumferential side portion on one surface side of the linkage member 36, and a bevel gear portion 37 is formed on the other surface side of the linkage member 36.

  The cam portion 40 is formed with a cam surface 41 whose axial dimension changes according to the rotation.

  The bevel gear portion 37 is linked to the ignition switch 5 by meshing with a gear portion 5 a provided in the ignition switch 5. Then, by rotating the regular key 7, the linkage member 36 and the gear portion 5 a rotate, and the position set in the ignition switch 5 is switched.

  As shown in FIGS. 1 and 2, the lock member 50 includes a lock main body 51 whose front end serving as an advancing side end is engaged with an engagement groove (not shown) provided on the outer peripheral surface of the steering shaft, A hanger 52 that is detachably linked to a rear end side that is a retreat side end portion of 51, and a lock urging member 53 that urges the lock body 51 from the retreat end side to the advance end side. And the lock main body 51 and the hanger 52 which comprise the lock member 50 are arrange | positioned in the guide hole 14 of the lock cylinder part 17b so that advancement / retraction is possible in the linked state. That is, the link portion 50 a between the lock main body 51 and the hanger 52 includes a main body side link portion 51 b provided at the rear end of the lock main body 51 and a hanger side link portion 52 b provided at the front end of the hanger 52. As a result, the lock member 50 is freely displaced between a lock position that is an advancing end and a lock release position that is a retreat end by a key operation. At the lock position, the front end of the lock body 51 protrudes from the lock cylinder portion 17b and engages with the engagement groove, thereby restricting the rotation of the steering shaft. In the unlocked position, the front end of the lock main body 51 is retracted into the lock cylinder portion 17b and separated from the engagement groove, so that the steering shaft can be rotated.

  The lock main body 51 is made of a plate-like hard member, the front end is set to an engagement portion 51 a that engages with the engagement groove, the rear end has a hook shape, and the main body side linkage portion 51 b that is linked to the hanger 52. Is set to

  The hanger 52 is composed of a member having a lower load resistance than the lock body 51. The hanger 52 includes a hanger-side linkage portion 52b, a follow-up projection 52e, and an engagement / disengagement opening 52f.

  The hanger side linkage portion 52b is formed at the front end of the hanger 52B, and has a rectangular frame shape into which the main body side linkage portion 51b can be inserted and removed.

  The tracking protrusion 52e is located at the rear end of the hanger 52 and protrudes toward the linkage member 36. When the linkage member 36 is rotated by the unlocking operation, the follower protrusion 52 e receives the urging force of the lock urging member 53 and follows the cam surface 41 while being in contact therewith.

  The engagement / disengagement opening 52f is an opening having a rectangular frame shape formed at the end opposite to the hanger-side linkage 52b. Further, the engagement / disengagement opening 52f is configured to be able to be engaged / disengaged with the holding hook 81c of the check rod 81 constituting the check mechanism 80.

  The hanger 52 is slidably disposed in a groove-shaped hanger storage portion (not shown) provided on the inner surface of the lock tube portion 17b along the longitudinal direction of the lock tube portion 17b. A lock cover 74 serving as a trigger linking means is disposed in the hanger storage portion outside the hanger 52 so as to surround the hanger 52 from three sides.

  The lock urging member 53 is formed of a winding spring, and is disposed in a compressed state between the retracted end wall 14a of the guide hole 14 and the retracted end 51e on the back side of the main body side linkage portion 51b. Then, the hanger 52 and the lock body 51 are urged in a direction away from each other by the compression reaction force of the lock urging member 53, and the linked state is maintained. Moreover, the lock member 50 can be expanded and contracted by such a linkage structure. The lock main body 51 is urged and held by the lock urging member 53 from the lock release position side to the lock position side, so that the follow-up protrusion 52e of the cam surface 41 is rotated when the linkage member 36 rotates in the forward rotation direction. It moves along the slope and the hanger 52 and the lock body 51 slide from the lock position to the release position.

  The auxiliary lock means 60 includes an auxiliary lock member 61 arranged to be movable between an engagement position and a non-engagement position, and a winding spring. The auxiliary lock member 61 is moved from the non-engagement position side to the engagement position side. Auxiliary lock urging means 62 that urges the auxiliary lock member 61 and a trigger 70 that holds the auxiliary lock member 61 in the non-engagement position. Further, the auxiliary lock member 61 and the auxiliary lock urging means 62 are formed inside the lock cylinder portion 17b, and are accommodated in the auxiliary lock accommodating portion 15 communicating with the guide hole 14 in a state where the auxiliary lock urging means 62 is compressed. Has been.

  The auxiliary lock member 61 engages with the auxiliary lock receiving groove 51f formed in the lock body 51 located at the lock position in a state where the auxiliary lock member 61 is located at the engagement position, and restricts the movement of the lock member 50 to the lock release position. . In addition, the auxiliary lock member 61 is separated from the lock main body 51 in a state where the auxiliary lock member 61 is located at the non-engagement position, and allows the lock member 50 to move between the lock position and the lock release position.

  As shown in FIGS. 1 to 3, the trigger 70 includes a trigger main body 71 including a plurality of main body members including a front end side main body 75 and a rear end side main body 76 and a winding spring, and applies a biasing force to the trigger main body 71. The trigger urging means 72 is comprised.

  The distal end side main body 75 is made of a round bar-shaped shaft member, and a spherical bulging portion 75a is formed at the rear end portion thereof. Further, the distal end side main body 75 has a distal end portion set to a locking portion 75b. And it is inserted in the trigger hole which is formed in the lock | rock cylinder part 17b, and connects the accommodation chamber and the auxiliary | assistant lock accommodation part 15 so that a displacement is possible.

  The rear end side main body 76 is configured by a member in which two parallel round rod-like shaft members are connected in a crank shape. The front end side shaft portion 76 a of the rear end side main body 76 is in contact with the bulging portion 75 a and is inserted into and linked to the trigger linking portion 73 b of the trigger linking means 73. The rear end side shaft portion 76b of the rear end side main body 76 is supported in the cylinder tube portion 17a so as to be rotatable about the axis and displaceable. Further, the front end side main body 75 and the rear end side main body 76 are assembled in the frame 10, and the bulging portion 75a of the front end side main body 75 and the front end side shaft portion 76a of the rear end side main body 76 are connected. Each dimension is set so that the joint portion overlaps the fragile portion 17 d of the frame 10.

  In a normal state where no illegal act is performed, the distal end side main body 75 bulges from a stepped portion (not shown) in the trigger hole while inserting the distal end side into the cylinder of the trigger urging means 72. In a state where the trigger biasing means 72 is compressed and pinched between the portion 75a, the locking portion 75b engages with the auxiliary lock member 61 located at the non-engagement position, and the auxiliary lock member 61 is brought into the non-engagement position. Hold on. Further, the rear end side main body 76 has a bulging portion 75a of the front end side main body 75 that holds the auxiliary lock member 61 in the non-engagement position and the inner surface of the frame cover 20 by the compression reaction force of the trigger urging means 72. Is sandwiched between. That is, the front end side main body 75 and the rear end side main body 76 are linked by the biasing force of the trigger biasing means 72.

  The trigger linking means 73 is provided on a lock cover (trigger linking means) 74 made of a plate-like metal material having a U-shape, and includes a trigger linking portion 73b having an annular frame shape. The trigger linking portion 73b has the front end side shaft portion 76a of the rear end side main body 76 inserted through the annular frame.

  The check mechanism 80 includes a check rod 81, a check biasing means 82, and a check piece 83, and detects whether or not the key 7 is inserted into the keyhole 3a.

  The check rod 81 is provided with an intermediate fulcrum 81 a that can swing both ends like a balance, and is installed on the side of the cylinder lock 3 along the axial direction of the cylinder lock 3. The check rod 81 includes a check protrusion 81b that protrudes in a hook shape toward the cylinder lock 3 at the end of the keyhole 3a, and can be engaged with and disengaged from the engagement / disengagement opening 52f at the end of the connecting portion 3b. A holding hook 81c protruding like a bowl is provided. A check urging means 82 is installed between the intermediate fulcrum 81a and the check protrusion 81b, and the urging force of the check urging means 82 on the check rod 81 is directed from the outside to the inside of the cylinder lock 3. Is acting. Thus, the check rod 81 is supported so that the check protrusion 81b and the holding hook 81c can swing with the intermediate fulcrum 81a as a fulcrum, and the holding hook 81c can swing with the check protrusion 81b as a fulcrum.

  Due to the urging force of the check urging means 82, a piece hole 84 penetrating from the circumferential surface to the key hole 3a is opened at a side portion of the cylinder lock 3 with which the check protrusion 81b abuts. A check piece 83 is arranged so as to be movable in the piece hole 84.

  In the standby state, the check piece 83 receives the urging force of the check urging means 82 and protrudes into the keyhole 3a. When the key 7 is inserted into the key hole 3a, the check piece 83 is pushed out of the key hole 3a against the urging force of the check urging means 82 by the tip of the key 7 inserted into the key hole 3a. . The shape and dimensions of the check piece 83 are set so that the outer end surface 83a of the check piece 83 coincides with the outer peripheral surface of the cylinder lock 3 in a state where the check piece 83 is pushed out from the keyhole 3a. When the key 7 is pulled out from the key hole 3a, the check piece 83 receives the urging force of the check urging means 82, moves to the inside of the cylinder lock 3, and protrudes into the key hole 3a.

  Next, the operation of the steering lock device 1 in the above configuration will be described.

  As shown in FIG. 4, the steering lock device 1 in the standby state at the time of locking is moved to the lock position while the lock body 51 is urged from the lock release position side to the lock position side by the urging force of the lock urging member 53. positioned. The hanger 52 is positioned at the lock position while the follower protrusion 52e is urged onto the cam surface 41 by the urging force of the lock urging member 53 via the associated lock main body 51. The cylinder lock 3 is locked in a state where the key 7 can be inserted and removed, and the check piece 83 protrudes into the key hole 3 a by the urging force of the check urging means 82.

  When the key 7 is inserted into the key hole 3a, as shown in FIG. 5, the check piece 83 is pushed out from the key hole 3a, and the check rod 81 swings around the intermediate fulcrum 81a (rotates counterclockwise in FIG. 5). . When the inserted key 7 is a regular key 7, the cylinder lock 3 is unlocked and can be rotated in the forward rotation direction.

  By rotating the regular key 7 in the forward rotation direction, the check protrusion 81b that contacts the outer end surface 83a of the check piece 83 moves on the outer peripheral surface 3e of the cylinder lock 3 as shown in FIG. Further, the linkage member 36 rotates with the rotation of the cylinder lock 3. Corresponding to the rotation of the linking member 36, the follower protrusion 52e follows the cam surface 41, and the hanger 52 is displaced from the locked position to the unlocked position. Here, when the hanger 52 is displaced to the unlocking position, the holding hook 81c of the check rod 81 swings around the check protrusion 81b to get over the rectangular frame of the engagement / disengagement opening 52f of the hanger 52, and Engage with the opening 52f. As the engagement / disengagement opening 52f engages the holding hook 81c, the hanger 52 is held at the unlocked position. As the hanger 52 is displaced to the unlocked position, the lock body 51 linked to the hanger 52 is displaced to the unlocked position while compressing the lock urging member 53.

  When the key 7 is rotated in the reverse direction and the cylinder lock 3 is rotated to the same position as in the standby state, the key 7 can be removed as shown in FIG. Further, by rotating the key 7 in the reverse rotation direction, the check protrusion 81 b returns along the path followed during the normal rotation and comes into contact with the outer end surface 83 a of the check piece 83. During this time, the check rod 81 does not swing and the engagement between the holding hook 81c and the engagement / disengagement opening 52f is maintained, so that the follow-up projection 52e is separated from the cam surface 41 and the hanger 52 is held in the unlocked position. Has been.

  When the key 7 is pulled out from the cylinder lock 3 located at the same position as the standby state, the check piece 83 is displaced into the key hole 3a by the urging force of the check urging means 82. As a result, the check rod 81 swings around the intermediate fulcrum 81a (rotates clockwise in FIG. 7), and the engagement between the holding hook 81c and the engagement / disengagement opening 52f is released. When the engagement between the holding hook 81c and the engagement / disengagement opening 52f is released, the lock body 51 and the hanger 52 are displaced to the lock position by the urging force of the lock urging member 53, and the state shown in FIG. Become.

  When moving to the lock position, if the engaging portion 51a of the lock main body 51 rides on a protrusion (not shown) that forms the engaging groove of the steering shaft, the lock urging member 53 is The hanger 52 moves to the lock position in a state in which the lock body 51 is compressed and contracted and the lock main body 51 remains on the protrusion. When the steering shaft is rotated and the protrusion is displaced from the engaging portion 51a of the lock main body 51, the engaging portion 51a is engaged with the engaging groove by the urging force of the lock urging member 53, so that the steering shaft Limit rotation.

  Next, when an external force acts on the steering lock device 1 due to fraud or the like and the frame cover 20 falls off the frame 10, the trigger body is caused by the compression reaction force of the trigger urging means 72 as shown in FIG. 71, while the rear end side main body 76 is detached from the frame 10, the front end side main body 75 and the auxiliary lock member 61 are disengaged, and the auxiliary lock member 61 is engaged by the biasing force of the auxiliary lock biasing means 62. Move to the position side. At this time, when the lock member 50 is located at the lock position, the auxiliary lock member 61 engages with the auxiliary lock receiving groove 51f of the lock body 51, and the lock member 50 is held at the lock position.

  Further, when an external force acts on the steering lock device 1 due to an illegal act or the like, and the cylinder tube portion 17a and the lock tube portion 17b are broken at the fragile portion 17d, as shown in FIG. The tip side main body 75 falls off together with the portion 17a, and the trigger biasing means 72 is displaced by the compression reaction force, so that the tip side main body 75 and the auxiliary lock member 61 are disengaged, and the biasing force of the auxiliary lock biasing means 62 As a result, the auxiliary lock member 61 moves to the engagement position side.

  In addition, when an excessive external force is applied by, for example, hitting the side surface of the cylinder tube portion 17a with a tool due to an illegal act, the cylinder tube portion 17a is bent or broken, and the lock cover 74 is displaced. When the lock cover 74 is displaced, the trigger linkage portion 73b abuts against the front end side shaft portion 76a of the rear end side main body 76, and the rear end side main body 76 rotates around the axis of the rear end side shaft portion 76b. The link between the bulging portion 75a of the main body 75 and the front end side shaft portion 76a of the rear end side main body 76 is released. Then, the disengagement between the bulging portion 75a and the distal end side shaft portion 76a causes the distal end side main body 75 to be displaced by the urging force of the trigger urging means 72. The engagement with the lock member 61 is released, and the auxiliary lock member 61 is moved to the engagement position side by the urging force of the auxiliary lock urging means 62.

  As a modified example of the trigger, as shown in FIG. 11, the rear end portion of the rear end side body 76 may be engaged with a trigger receiving portion 3d provided on the sleeve 3c. When an external force acts on the steering lock device 1 due to an illegal act or the like, and the frame cover 20 is dropped from the frame 10, the cylinder lock 3, the sleeve 3 c, and the trigger body 71 are connected to the trigger urging means 72. The auxiliary locking member 61 moves from the non-engaged position to the engaged position by the urging force of the auxiliary lock urging means 62 due to the drop off due to the compression reaction force.

  With the above configuration, the auxiliary lock means 60 operates to hold the lock member 50 in the locked position in response to an illegal act of removing the frame cover 20 from the frame 10 or an illegal act of breaking the frame 10. can do.

  In addition, the trigger main body 71 includes a plurality of main body members including a front end side main body 75 and a rear end side main body 76, and the front end side main body 75 includes the trigger urging means 72. By separating the main body 75 and the rear end side main body 76, the auxiliary lock means 60 can be operated more reliably.

  Further, since the trigger main body 71 is composed of the front end side main body 75 and the rear end side main body 76, the frame cover 20 is dropped for various shapes of the frame 10 such as when the storage chamber cannot be set on the extension of the lock member 50. In this case, the auxiliary lock means 60 can be operated.

  Furthermore, by setting the dimensions of the front end side main body 75 and the rear end side main body 76 so that the joint between the front end side main body 75 and the rear end side main body 76 overlaps the fragile portion 17d of the frame 10, When the frame 10 is broken at the fragile portion 17d, the linkage of the trigger main body 71 is surely released, so that the auxiliary lock means 60 is reliably operated.

  In the present embodiment, the rear end side main body 76 has a crank shape, and since the linkage with the front end side main body 75 is released by rotating around the axis, an external force such as hitting the frame 10 is applied. The linkage between the front end side main body 75 and the rear end side main body 76 is released by the inertial force, the auxiliary lock means 60 operates, and the lock member 50 can be held in the lock position.

  In the present embodiment, since the trigger linking means 73 is provided, a large inertial force is applied to the rear end side body 76 via the trigger linking means 73 when an external force is applied to the steering lock device. As a result, the rear end side main body 76 rotates about the axis, the linkage between the front end side main body 75 and the rear end side main body 76 is released, and the auxiliary lock means 60 can be operated more reliably.

  From the above, the steering lock device 1 of the present embodiment can maintain the steering lock state against various illegal acts.

Second Embodiment
Next, 2nd Embodiment of this invention is described based on drawing. The steering lock device of the present embodiment is different from the first embodiment described above in the configuration of the trigger body 71A that constitutes the trigger 70A. Other configurations are basically the same as those of the first embodiment described above. Note that in the second embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 12, the trigger main body 71A is configured by a plurality of main body members including a front end side main body 75 and a rear end side main body 76A, as in the first embodiment.

  Like the first embodiment, the distal end side main body 75 is made of a round bar-shaped shaft member, and a spherical bulging portion 75a is formed at the rear end portion thereof, and the distal end portion thereof is set to the locking portion 75b. ing.

  The rear end side main body 76A is made of a rectangular bar-like shaft member, and has an arm portion 76c that can slide in contact with the bulging portion 75a at the tip end side, and is formed in a substantially L shape. Further, the front end side main body 75 and the rear end side main body 76A are assembled in the frame 10, and a portion where the bulging portion 75a of the front end side main body 75 and the arm portion 76c of the rear end side main body 76A are connected. The respective dimensions are set so as to overlap the fragile portion 17d of the frame 10.

  In the normal state, the distal end side main body 75 swells with a stepped portion (not shown) in the trigger hole while inserting the distal end side into the cylinder of the trigger urging means 72 as in the first embodiment. In a state where the trigger urging means 72 is compressed and pinched between the protruding portion 75a, the locking portion 75b is engaged with the auxiliary lock member 61 located at the non-engagement position, and the auxiliary lock member 61 is not engaged. Hold in position. Further, the rear end side main body 76 </ b> A has a bulging portion 75 a of the front end side main body 75 that holds the auxiliary lock member 61 in the non-engagement position by the compression reaction force of the trigger urging means 72, and the inner surface of the frame cover 20. Is sandwiched between. That is, the front end side main body 75 and the rear end side main body 76 </ b> A are linked by the biasing force of the trigger biasing means 72.

  Next, when an external force acts on the steering lock device 1 due to fraud, etc., and the frame cover 20 is dropped from the frame 10 and when the frame 10 is broken at the fragile portion 17d, the same as in the first embodiment. The trigger body 71A falls off due to the biasing force of the trigger biasing means 72, and the auxiliary lock member 61 is displaced toward the engagement position side due to the biasing force of the auxiliary lock biasing means 62.

  With the above configuration, the same effect as the first embodiment can be obtained.

DESCRIPTION OF SYMBOLS 1 ... Steering lock apparatus 10 ... Frame 13 ... Accommodating chamber 14 ... Guide hole 17d ... Fragile part 20 ... Frame cover 50 ... Lock member 60 ... Auxiliary lock means 71 ... Trigger main body 72 ... Trigger biasing means 73 ... Trigger linkage means 73a ... Trigger linkage part 75 ... tip side main body (main body member)
76, 76A ... rear end side main body (main body member)

Claims (4)

A frame cover assembled to the frame;
A locking member disposed in a guide hole provided in the frame so as to be slidable between a locked position and an unlocked position;
A trigger body arranged to be displaceable,
A steering lock device comprising: auxiliary lock means for holding the lock member in the lock position by displacing the trigger body in a state where the lock member is located in the lock position,
The trigger body is composed of a plurality of body members,
A steering lock device comprising trigger urging means for applying an urging force to the main body member linked to the auxiliary lock means. The steering lock device according to claim 1,
The frame includes a weakened portion having a lower strength than other parts,
The steering lock device, wherein the dimensions of the body member are set so that the joint portion of the trigger body overlaps the weakened portion. The steering lock device according to claim 1 or 2,
A steering lock device, wherein at least one of the main body members comprises a member in which two parallel round rod-like shaft members are connected in a crank shape, and is supported rotatably around the shaft. The steering lock device according to claim 3,
A steering lock device, characterized in that a trigger linking means having a frame shape and having a trigger linking portion through which the main body member having a crank shape can penetrate is arranged in the frame.