JP2007177575A - Steering lock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a steering lock device capable of miniaturizing the outer diameter of an ignition cylinder. <P>SOLUTION: In this steering lock device, a stopper pin 86 can move between a regulating position regulating displacement of the ignition cylinder 26 to a lock body 12 and a releasing position releasing this regulation, and is energized in the regulating position direction by a leaf spring 104 arranged in the peripheral direction between an inner peripheral part of a rotor storage hole 30 and an outer peripheral part of a key rotor 32. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a steering lock device applied to a vehicle such as an automobile.

  In a conventional steering lock device (for example, see Patent Document 1), an ignition cylinder is accommodated in an accommodation hole formed in a lock body attached to a vehicle body. In such a steering lock device, a stopper pin that is urged radially outward of the ignition cylinder by a torsion coil spring is provided on the outer periphery of the ignition cylinder. The tip of the stopper pin protrudes from the outer periphery of the ignition cylinder and is fitted in a hole formed in the inner periphery of the accommodation hole. Thereby, the exit from the accommodation hole of the ignition cylinder is restricted.

However, in the steering lock device having the above-described configuration, the space for disposing the torsion coil spring has to be ensured on the outer periphery of the ignition cylinder, so that the outer diameter of the ignition cylinder is increased.
JP 54-13140 A

  An object of the present invention is to obtain a steering lock device that can reduce the outer diameter of an ignition cylinder in consideration of the above facts.

  A steering lock device according to a first aspect of the present invention includes a rotor case attached to a vehicle body attachment member and having a rotor accommodating hole, and an ignition cylinder having a key rotor that is accommodated in the rotor accommodating hole and is rotated by a key. A stopper pin provided in the rotor case and movable between a restriction position for restricting displacement of the ignition cylinder with respect to the vehicle body mounting member and a release position for releasing the restriction; Provided along the circumferential direction between the peripheral portion and the outer peripheral portion of the key rotor, one end abuts against the stopper pin and the other end is supported by the rotor case, and biases the stopper pin toward the restriction position And an urging member.

  In the steering lock device according to the first aspect, the stopper pin provided in the rotor case of the ignition cylinder is urged toward the restriction position by the urging member, and the displacement of the ignition cylinder with respect to the vehicle body mounting member is restricted. Further, if the stopper pin is moved to the release position against the biasing force of the biasing member, the ignition cylinder can be removed from the vehicle body mounting member.

  Here, in this steering lock device, the biasing member is provided along the circumferential direction between the inner peripheral portion of the rotor accommodation hole and the outer peripheral portion of the key rotor. Therefore, the arrangement space of the urging member does not expand in the radial direction of the ignition cylinder, and thereby the outer diameter of the ignition cylinder can be reduced.

  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 steering lock device is supported by the rotor case, abuts against the other end portion of the biasing member, and is biased by the biasing force of the biasing member. A lever that engages with an outer periphery; the key rotor is rotated between a lock position and an accessory position by a rotation operation by the key; and is moved in an axial direction by a push operation by the key; And the lever restricts the rotation of the key rotor to the locked position by interfering with the convex portion when the key rotor is located at the accessory position, and the key rotor is By moving the direction, the interference with the convex portion is released, and the key rotor is rotated to the locked position. It is characterized by allowing.

  In the steering lock device according to claim 2, the lever is engaged with the outer peripheral portion of the key rotor by the biasing force of the biasing member that biases the stopper pin, and when the key rotor is located at the accessory position, the lever is the key rotor. By interfering with the convex part, the rotation of the key rotor to the lock position is restricted. In this state, when the key rotor is pushed by the key and moves in the axial direction, the interference between the lever and the convex portion is released, and the key rotor is allowed to rotate to the lock position.

  Here, in this steering lock device, since both the stopper pin and the lever are urged by a single urging member, the number of parts can be reduced and the ignition cylinder can be further reduced in size.

  A steering lock device according to a third aspect of the present invention is the steering lock device according to the first aspect, wherein the steering lock device is attached to the vehicle body mounting member and has a rotor accommodating hole, and is accommodated in the rotor accommodating hole, and is provided by a key. An ignition cylinder having a key rotor that is rotated between a lock position and an accessory position by a rotation operation, is moved in an axial direction by a pressing operation by the key, and has a convex portion formed on an outer peripheral portion, and the rotor case A stopper pin provided between the restriction position for restricting the displacement of the ignition cylinder with respect to the vehicle body mounting member and the release position for releasing the restriction; and supported by the rotor case and against the key rotor. Engageable with the key rotor and the front When the key rotor is positioned at the accessory position, the rotation of the key rotor to the locked position is restricted by interfering with the convex portion, and the interference with the convex portion is released by moving the key rotor in the axial direction. A lever that allows the key rotor to rotate to the locked position, and an arcuate portion provided between the inner peripheral portion of the rotor receiving hole and the outer peripheral portion of the key rotor along the circumferential direction, and one end portion of the stopper And a biasing member that hits the pin and the other end hits the lever and biases the stopper pin toward the restriction position by its own spreading force and engages the lever with the outer peripheral portion of the key rotor. It is characterized by.

  In the steering lock device according to the third aspect, the stopper pin provided in the rotor case of the ignition cylinder is urged in the restricted position direction by the urging force (spreading force) of the urging member, and the ignition cylinder is attached to the vehicle body mounting member. Displacement is regulated. Further, if the stopper pin is moved to the release position against the biasing force of the biasing member, the ignition cylinder can be removed from the vehicle body mounting member.

  Further, in this steering lock device, the lever is engaged with the outer peripheral portion of the key rotor by the urging force of the urging member that urges the stopper pin, and when the key rotor is located at the accessory position, the lever is the convex portion of the key rotor. The rotation of the key rotor to the locked position is restricted. In this state, when the key rotor is pushed by the key and moves in the axial direction, the interference between the lever and the convex portion is released, and the key rotor is allowed to rotate to the lock position.

  Here, in this steering lock device, the urging member is provided in an arc shape along the circumferential direction between the inner peripheral portion of the rotor accommodation hole and the outer peripheral portion of the key rotor. Therefore, the arrangement space of the urging member does not expand in the radial direction of the ignition cylinder, and thereby the outer diameter of the ignition cylinder can be reduced. In addition, in this steering lock device, since both the stopper pin and the lever are urged by a single urging member, the number of parts can be reduced and the ignition cylinder can be further reduced in size.

  In a steering lock device according to a fourth aspect of the present invention, in the steering lock device according to any one of the first to third aspects, the vehicle body attachment member has a cylinder accommodation hole for accommodating the ignition cylinder, and the key rotor is One end in the axial direction in which a key insertion hole is formed is disposed on the opening side of the cylinder housing hole, and the biasing member and the stopper pin are disposed on the back side of the cylinder housing hole. It is characterized by being provided facing the other axial end.

  In the steering lock device according to claim 4, even if the opening side of the cylinder housing hole of the vehicle body mounting member, that is, the key insertion port side of the key rotor is destroyed, the stopper pin provided on the back side of the cylinder housing hole and It is difficult to approach the urging member that urges the stopper pin toward the restriction position. Accordingly, it is difficult to destroy the stopper pin and the urging member, that is, to remove the ignition cylinder from the cylinder accommodation hole, so that it is possible to improve theft prevention.

  As described above, the steering lock device according to the present invention can reduce the outer diameter of the ignition cylinder.

  FIG. 1 is an exploded perspective view showing the configuration of a steering lock device 10 for a vehicle according to an embodiment of the present invention. FIG. 2 is a sectional view showing the configuration of the steering lock device 10. In FIG. 2, hatching of some members is omitted for convenience of explanation.

  The steering lock device 10 includes a lock body 12 as a vehicle body attachment member attached to a steering post (not shown) of a vehicle. The lock body 12 has a pair of fixing pieces 14 and 16 fixed to the steering post. is doing. The pair of fixed pieces 14 and 16 are each formed in a semi-cylindrical shape, and are configured to be cylindrical when combined. Each of the pair of fixed pieces 14 and 16 is rotatably connected at one end in each bending direction by a support shaft 18, and is fastened at the other end in each bending direction by a bolt 20. It is fixed to the outer periphery of the steering post.

  In addition, a main body 22 constituting the lock body 12 is integrally connected to one fixed piece 14. The main body portion 22 is formed in a bottomed cylindrical shape, and the inside of the cylinder is a cylinder accommodation hole 24, and an ignition cylinder 26 is accommodated in the cylinder accommodation hole 24.

  The ignition cylinder 26 has a rotor case 28 that is formed in a cylindrical shape and is fitted coaxially in the cylinder accommodation hole 24. As shown in FIG. 3, the cylinder of the rotor case 28 has a rotor accommodation hole 30, and a cylindrically formed key rotor 32 is accommodated coaxially in the rotor accommodation hole 30. The key rotor 32 is rotatably supported by the inner peripheral portion of the rotor case 28, and is prevented from being pulled out to one axial direction side (the arrow A direction side in FIGS. 1 to 3) and to the other axial direction side (FIGS. 1 to 3). 3 is movable in the direction of arrow B).

  An insertion port 36 for the key 34 is formed at one end in the axial direction (end on the arrow A direction side) of the key rotor 32 disposed on the opening side of the cylinder housing hole 24. In addition, a plurality of tumbler accommodation holes 38 are formed in the axial direction intermediate portion of the key rotor 32, and the tumblers 40 are accommodated in the tumbler accommodation holes 38, respectively. These tumblers 40 allow the key rotor 32 to rotate with respect to the rotor case 28 only when the regular key 34 is inserted into the key rotor 32 from the key insertion port 36.

  The key rotor 32 can be rotated between the LOCK position (lock position, position shown in FIG. 4) and the ACC position (accessory position, position shown in FIG. 5) by rotating the key 34, and via the ACC position. It is configured to be able to rotate to an ON position (position shown in FIG. 6) set on the side opposite to the LOCK position and a START position (not shown) set on the side opposite to the ACC position via the ON position. . Further, the key 34 is controlled to be pulled out from the key rotor 32 by the tumbler 40 when the key rotor 32 is located at the ACC position, the ON position, and the START position, and the key rotor 32 is located at the LOCK position. Only in the state, the key 34 can be inserted into and removed from the key rotor 32.

  On the other hand, a camshaft 42 formed in a columnar shape is provided between the ignition cylinder 26 and the bottom wall 22 </ b> A of the main body 22 inside the cylinder housing hole 24. The cam shaft 42 is disposed coaxially with the key rotor 32 and is rotatably supported by the inner peripheral portion of the cylinder accommodation hole 24. A torsion spring 44 is accommodated inside the cam shaft 42, and the cam shaft 42 is always urged toward the LOCK position by the torsion spring 44. A spiral inclined surface 46 (see FIG. 2) is formed on the outer peripheral portion of the camshaft 42. The inclined surface 46 corresponds to a plate lock 64 described later.

  A connecting portion 48 projects from the end of the camshaft 42 on the key rotor 32 side. The connecting portion 48 is connected to a connecting hole 50 formed at the other end in the axial direction of the key rotor 32 by so-called spline fitting so that the camshaft 42 and the key rotor 32 cannot be rotated relative to each other in the axial direction. They are linked so that they can move relative to each other.

  A torsion coil spring 52 is disposed between the tip of the connecting portion 48 and the bottom wall of the connecting hole 50, and the torsion coil spring 52 urges the key rotor 32 to one side in the axial direction. For this reason, the key rotor 32 is normally disposed at the position shown in FIG. 2, but when the key rotor 32 is pushed by the key 34 inserted into the key rotor 32, the axial direction or the like is resisted against the urging force of the torsion coil spring 52. It moves to the side (arrow B direction side in FIG. 1 thru | or FIG. 3).

  Note that an ignition switch 54 is provided on the opposite side of the camshaft 42 via the bottom wall 22A of the main body 22. The ignition switch 54 is connected to the key rotor 32 by a connecting rod 56 that passes through the bottom wall 22A and the camshaft 42, and the connection of contacts (not shown) is switched as the key rotor 32 rotates.

  On the other hand, between the cylinder accommodation hole 24 and one fixed piece 14, one end side communicates with the cylinder accommodation hole 24 and the other end side communicates with the inside of a steering post (not shown) (see FIG. 2). ) And a lock bar 60 formed in the shape of a prism is accommodated inside the lock bar accommodation hole 58. The lock bar 60 engages with a steering shaft (not shown) provided in the steering post, and slides between an engagement position that restricts rotation of the steering shaft and a non-engagement position that releases the engagement state. The biasing force of the torsion coil spring 62 provided in the lock bar accommodating hole 58 is always biased toward the engagement position. In the steering lock device 10, the sliding direction of the lock bar 60 is set parallel to the axial direction of the cylinder housing hole 24.

  Further, a plate lock 64 is provided between the lock bar 60 and the ignition cylinder 26. The plate lock 64 is formed in a long plate shape, and is disposed in a side of the ignition cylinder 26 and the camshaft 42 in a state parallel to the axis of the cylinder housing hole 24, and the longitudinal direction of the plate body 66. An L-shaped connecting portion 68 is integrally connected to one end portion in the direction (the end portion on the arrow B direction side in FIGS. 1 to 3). The connecting portion 68 is connected to the lock bar 60, and the plate lock 64 is always integral with the lock bar 60 and slides between the engaged position and the non-engaged position.

  A driven claw 70 is formed at one end in the longitudinal direction of the plate body 66 so as to face the inclined surface 46 of the camshaft 42 so as to come into contact therewith. The driven claw 70 slides on the inclined surface 46 when the camshaft 42 rotates together with the key rotor 32 from the LOCK position to the ACC position, and the plate lock 64 is rotated by the torsion coil spring. It is configured to slide against one side in the axial direction of the cylinder accommodation hole 24 against the urging force of 62 (in the direction of arrow A in FIG. 1 to FIG. 3, the direction of the non-engagement position).

  When the camshaft 42 reaches the ACC position, the driven claw 70 is hooked on one end of the camshaft 42 in the axial direction, so that the plate lock 64 and the lock bar 60 are held in the non-engagement position. Even when the camshaft 42 is disposed at the ON position and the START position, the driven claw 70 is maintained in a state of being hooked on one end of the camshaft 42 in the axial direction, and the plate lock 64 and The lock bar 60 is held in the non-engagement position. Further, when the camshaft 42 rotates together with the key rotor 32 from the ACC position to the LOCK position, the driven claw 70 is released from being caught on one end in the axial direction of the camshaft 42.

  On the other hand, the other end portion in the longitudinal direction of the plate body 66 (the end portion on the arrow A direction side in FIGS. 1 to 3) is disposed opposite and close to the outer peripheral portion of the rotor case 28, and the plate lock 64 is engaged. In the state located in the alignment position (the state shown in FIG. 2), the other end in the longitudinal direction of the plate body 66 is on the outer peripheral portion on the other end side in the axial direction of the rotor case 28 (the arrow B direction side in FIGS. 1 to 3). In the state where the plate lock 64 is opposed and located at the non-engagement position, the other end portion in the longitudinal direction of the plate body 66 is the outer periphery on one end side in the axial direction of the rotor case 28 (the arrow A direction side in FIGS. 1 to 3). It comes to face the part.

  A lock piece 72 is swingably attached to the other longitudinal end of the plate body 66. A locking projection 74 that protrudes toward the rotor case 28 is formed at the tip of the locking piece 72 (the end on the arrow A direction side in FIGS. 1 to 3). Is moved along the radial direction of the rotor case 28 so as to come into contact with and separate from the outer peripheral portion of the rotor case 28. Further, the lock piece 72 is always urged by the urging force of the torsion spring 76 in a direction in which the locking projection 74 approaches the rotor case 28, and the locking projection 74 normally approaches the outer peripheral portion of the rotor case 28. Are arranged.

  A through hole is formed in the outer peripheral portion on one axial end side of the rotor case 28 at a position facing the tip end portion of the lock piece 72 in a state where the lock piece 72 is disposed in the non-engagement position together with the plate lock 64. The second slide piece 78 is disposed in the through hole. The second slide piece 78 extends along the radial direction of the rotor case 28 between a protruding position where the tip end protrudes from the outer periphery of the rotor case 28 and a retracted position where the tip end retracts from the outer periphery of the rotor case 28. It is possible to move. An inclined surface 80 (see FIG. 2) is formed at the tip of the second slide piece 78.

  Further, a first slide piece 82 is provided in the key rotor 32 at a position facing the second slide piece 78. The first slide piece 82 is supported so as to be movable in the radial direction with respect to the key rotor 32, and has an inclined surface 84. In the first slide piece 82, when the key 34 is inserted into the key rotor 32 from the key insertion port 36, the key 34 comes into contact with the inclined surface 84, so that the key rotor 32 is radially outward (rotor case 28 side). While being moved, the key 34 prevents the key rotor 32 from moving inward in the radial direction.

  Thus, in the state where the first slide piece 82 is moved to the rotor case 28 side, the second slide piece 78 is held by the first slide piece 82 at the above-described protruding position. Further, in a state where the key 34 is removed from the key rotor 32, the first slide piece 82 can be moved inward in the radial direction of the key rotor 32. Therefore, the second slide piece 78 can be moved to the retracted position described above.

  Here, when the key rotor 32 is rotated from the LOCK position to the ACC position with the second slide piece 78 held in the protruding position, that is, with the key 34 inserted into the key rotor 32, the first slide piece. 82 rotates together with the key rotor 32 to the ACC position. In this state, the second slide piece 78 is held at the restricting position by engaging the outer peripheral portion of the key rotor 32. Even when the key rotor 32 is rotated to the ON position or the START position, the second slide piece 78 is held at the restriction position by engaging with the outer peripheral portion of the key rotor 32.

  At this time, since the camshaft 42 rotates together with the key rotor 32 to the ACC position, the plate lock 64 slides from the engaged position to the non-engaged position, and the locking projection 74 of the lock piece 72 tilts the second slide piece 78. Ride on surface 80. For this reason, when the locking projection 74 and the inclined surface 80 slide, the locking projection 74 is separated from the rotor case 28 against the urging force of the torsion spring 76, and the locking projection 74 is moved to the second slide piece 78. It has come to get over. Thus, in a state where the locking projection 74 has passed over the second slide piece 78, the locking projection 74 is hooked on the second slide piece 78, whereby the lock piece 72, the plate lock 64, and the lock bar 60 are twisted. It is configured to be held at the non-engagement position against the urging force of the spring 62.

  On the other hand, when the key rotor 32 and the camshaft 42 are rotated from the ACC position to the LOCK position, the second slide piece 78 is again held in the restricted position by the first slide piece 82. When the key 34 is pulled out from the key rotor 32, the movement of the first slide piece 82 by the key 34 is released, and the holding of the second slide piece 78 by the first slide piece 82 is released. For this reason, the second slide piece 78 is moved to the retracted position by the locking projection 74 of the lock piece 72 to be slid to the engagement position by the urging force of the torsion coil spring 62, and the lock piece 72, the plate The holding of the lock 64 and the lock bar 60 in the non-engagement position is released. Thereby, the lock piece 72, the plate lock 64, and the lock bar 60 are slid to the engagement position by the urging force of the torsion coil spring 62, and the lock bar 60 is engaged with a steering shaft (not shown).

  On the other hand, a cylindrical stopper pin 86 provided in the rotor case 28 is opposed to the other axial end of the key rotor 32 disposed on the back side of the cylinder housing hole 24 (the arrow B direction side in FIG. 2). Yes. The stopper pin 86 is fitted coaxially and movably in the axial direction into a circular through hole 88 formed at the other axial end of the rotor case 28 (the end on the arrow B direction side in the figure). Further, a circular through hole 90 is formed at a position facing the stopper pin 86 on the side wall 22B of the main body portion 22 of the lock body 12.

  Here, in a state where the key rotor 32 is located at the LOCK position shown in FIG. 4, the ON position shown in FIG. 6, and the START position (not shown), the stopper pin 86 has one end in the axial direction (the lower end in each of the above figures). Portion) hits the outer periphery of the key rotor 32, the rotor case 28 is prevented from moving inward in the radial direction and is held in the restricted position. In this state, the other end of the stopper pin 86 in the axial direction is fitted into the through hole 90 of the main body 22, so that the displacement of the ignition cylinder 26 with respect to the lock body 12, that is, from the cylinder housing hole 24 of the ignition cylinder 26. The configuration is such that the escape is restricted.

  An insertion hole 92 into which the other axial end of the stopper pin 86 can be inserted is formed in the outer peripheral portion of the key rotor 32. The insertion hole 92 is a stopper pin in a state where the key rotor 32 is located at the ACC position. 86 is provided so as to face 86. For this reason, as shown in FIG. 5, in a state where the key rotor 32 is located at the ACC position, the stopper pin 86 can be moved to the release position (see the dotted line in FIG. 5). When the stopper pin 86 is moved to the release position, one end in the axial direction of the stopper pin 86 comes out of the through hole 90 of the main body 22, and the displacement restriction of the ignition cylinder 26 by the stopper pin 86 is released. .

  On the other hand, a lever 94 is provided on the side opposite to the stopper pin 86 via the key rotor 32. The lever 94 has a long shape along the circumferential direction of the key rotor 32, and is disposed to face the outer peripheral portion of the key rotor 32. A concave portion 96 is formed at the center of the lever 94 in the longitudinal direction on the side opposite to the key rotor 32, and a support portion 98 provided on the outer peripheral portion of the rotor case 28 enters the concave portion 96. As a result, the lever 94 is supported by the rotor case 28 and can swing about the support portion 98 as a fulcrum.

  An interference protrusion 100 that protrudes toward the key rotor 32 is formed at one end in the longitudinal direction of the lever 94 (the end on the arrow C direction side in FIGS. 4 to 6), and the lever 94 swings around the support portion 98 as a fulcrum. By moving, the interference protrusion 100 is engaged (contacted) or separated from the outer peripheral portion of the key rotor 32. The other end in the longitudinal direction of the lever 94 (the end on the arrow D direction side in FIGS. 4 to 6) is disposed between the inner peripheral portion of the cylinder housing hole 24 and the outer peripheral portion of the key rotor 32. A connecting protrusion 102 that protrudes toward the key rotor 32 is formed at the other longitudinal end of the lever 94. The connecting protrusion 102 corresponds to a leaf spring 104 as an urging member.

  As shown in FIG. 7, the leaf spring 104 is formed in a long band shape by a plate-like spring material. The leaf spring 104 is provided along the circumferential direction between the inner peripheral portion of the rotor receiving hole 30 and the outer peripheral portion of the key rotor 32 in a state of being curved in an arc shape, and a part of the outer peripheral portion is accommodated in the rotor. The inner periphery of the hole 30 is in close contact. A pair of connecting pieces 106 facing each other in the width direction of the leaf spring 104 is formed at one end in the longitudinal direction of the leaf spring 104. As shown in FIGS. 8A to 8C, the other end of the stopper pin 86 in the axial direction is inserted between the pair of connecting pieces 106. A groove 108 into which the pair of connecting pieces 106 are fitted is formed at the other axial end of the stopper pin 86. As a result, one end portion in the longitudinal direction of the leaf spring 104 is connected (supported) to the stopper pin 86, and the stopper pin 86 is urged in the above-described restriction position direction by the spreading force of the leaf spring 104.

  Further, a rectangular connection hole 110 is formed at the other longitudinal end of the leaf spring 104, and the connection protrusion 102 of the lever 94 described above enters the connection hole 110. Thereby, the other longitudinal end of the leaf spring 104 is coupled (supported) to the coupling protrusion of the lever 94. That is, the other longitudinal end of the leaf spring is supported by the rotor case 28 via the lever 94, and the other longitudinal end of the lever 94 is attached in a direction away from the key rotor 32 due to the spreading force of the leaf spring 104. The interference protrusion 100 provided at one end in the longitudinal direction of the lever 94 is engaged (contacted) with the outer peripheral portion of the key rotor 32 by the spreading force of the leaf spring 104.

  As shown in FIGS. 9 and 10, a guide groove 112 is formed on the outer periphery of the key rotor 32 at a position facing the lever 94. The guide groove 112 includes an inclined path 114 formed along the circumferential direction of the key rotor 32, a convex part 116 that smoothly continues to one end of the inclined path 114, and an opposite side of the inclined path 114 via the convex part 116. The provided curved path 118, the inclined path 114, the convex portion 116, and the curved path 118 are provided on one side in the axial direction of the key rotor 32 (the arrow A direction side in FIGS. 9 and 10), and the entrance is the curved path 118. And a detour 120 having an outlet connected to the ramp 114. In FIG. 9 and FIG. 10, hatching and dots are given to each part of the guide groove 112 for convenience of explanation.

  Here, as shown in FIG. 4, when the key rotor 32 is disposed at the LOCK position, the interference protrusion 100 of the lever 94 comes into contact with the inclined path 114. Further, in this state, the interference protrusion 100 interferes with a step portion 122 (see FIGS. 9 and 10) formed at the connection portion between the ramp 114 and the detour 120, whereby the key rotor 32 is pushed by the key 34. That is, the key rotor 32 cannot be moved to the other side in the axial direction.

  Further, when the key rotor 32 is rotated from the LOCK position to the ACC position, the interference protrusion 100 slides on the inclined path 114 (see arrow E in FIG. 10), so that the interference protrusion 100, that is, one end in the longitudinal direction of the lever 94 is a leaf. The key rotor 32 is moved radially outward against the biasing force of the spring 104. Then, as shown in FIG. 5, when the key rotor 32 reaches the ACC position, the interference protrusion 100 gets over the convex portion 116 and comes into contact with the curved path 118 (see the one-dot chain line in FIG. 10). In this state, the rotation of the key rotor 32 to the LOCK position is restricted by the side surface 117 (see FIGS. 9 and 10) of the convex portion 116 interfering with the interference protrusion 100.

  However, in a state where the key rotor 32 is disposed at the ACC position, the interference protrusion 100 faces the entrance of the detour 120. The detour 120 and the curved path 118 are smoothly continuous, and in this state, the key rotor 32 can be pushed by the key 34. When the key rotor 32 is pushed, the interference protrusion 100 is released from the interference with the convex portion 116 and enters the detour 120 (see arrow F in FIG. 10). Since the exit of the detour route 120 is connected to the ramp 114, when the key rotor 32 is rotated to the LOCK position while being pushed in the ACC position, the interference protrusion 100 passes through the detour route 120 and the ramp 114 side. (See arrow G in FIG. 10), the key rotor 32 is rotated to the LOCK position.

  On the other hand, as shown in FIG. 6, when the key rotor 32 is disposed at the ON position and when the key rotor 32 is disposed at the START position (not shown), the interference protrusion 100 is in contact with the curved path 118. Thus, it is separated from the convex portion 116. In this state, when the interference protrusion 100 interferes with the wall portion 124 (see FIGS. 9 and 10) formed between the curved path 118 and the outer peripheral surface of the key rotor 32, the key rotor 32 cannot be pushed. It has become. In FIG. 10, the position of the interference protrusion 100 with respect to the key rotor 32 disposed at the ON position is indicated by a two-dot chain line, and the position of the interference protrusion 100 with respect to the key rotor 32 disposed at the START position is indicated by a dotted line.

  Next, the operation of this embodiment will be described.

  In the steering lock device 10 configured as described above, the key rotor 32 is disposed at the LOCK position when the key 34 is pulled out from the key rotor 32. In this state, the lock bar 60 is disposed at the engagement position and engaged with the steering shaft, and the rotation of the steering shaft is restricted.

  When the key rotor 32 is disposed at the LOCK position, the stopper pin 86 provided on the rotor case 28 is held at the restriction position by the key rotor 32, and one end in the axial direction of the stopper pin 86 is the lock body 12. It fits into a through hole 90 formed in the main body 22. Thereby, the ignition cylinder 26 is restricted from coming out of the cylinder housing hole 24.

  On the other hand, when the key 34 is inserted into the key rotor 32, the first slide piece 82 provided on the key rotor 32 is prevented from moving radially inward by the key 34, and the first slide piece 82 provided on the rotor case 28 is provided. The two slide pieces 78 are held in the protruding position by the first slide piece 82. When the key rotor 32 is rotated from the LOCK position to the ACC position by the key 34, the cam shaft 42 is rotated together with the key rotor 32 from the LOCK position to the ACC position, and the inclined surface 46 of the cam shaft 42 and the driven claw of the plate lock 64 are driven. 70 slides. For this reason, the plate lock 64 slides together with the lock bar 60 and the lock piece 72 to the non-engagement position, and the locking projection 74 of the lock piece 72 is hooked on the distal end portion of the second slide piece 78. As a result, the lock bar 60, the plate lock 64, and the lock piece 72 are held in the non-engagement position by the second slide piece 78.

  Further, when the key rotor 32 is disposed at the ACC position, the insertion hole 92 formed in the key rotor 32 faces the stopper pin 86, so that the stopper pin 86 can be moved to the release position, and the ignition cylinder 26 is locked. It can be removed from the body 12. However, since the stopper pin 86 is always urged to the restriction position by the spreading force of the leaf spring 104, the stopper pin 86 is not subject to an external force greater than the spreading force acting on the stopper pin 86 toward the release position. Is held in the restricted position.

  Further, when the key rotor 32 is rotated from the LOCK position to the ACC position, the interference protrusion 100 of the lever 94 engaged with the guide groove 112 of the key rotor 32 by the spreading force of the leaf spring 104 causes the inclined path 114 of the guide groove 112. To get over the convex part 116. For this reason, in the state where the key rotor 32 is disposed at the ACC position, the interference protrusion 100 and the convex portion 116 interfere with each other, whereby the rotation of the key rotor 32 to the LOCK position is restricted. However, when the key rotor 32 is pushed to the other side in the axial direction by the key 34, the interference protrusion 100 moves to the detour 120 side, so that the interference between the interference protrusion 100 and the convex portion 116 is released, and the key rotor 32 is moved. It will be possible to rotate to the LOCK position.

  Further, when the key rotor 32 is rotated to the LOCK position, the hold of the driven claw 70 (plate lock 64) by the camshaft 42 is released, but the locking protrusion 74 of the lock piece 72 is the second slide piece as described above. Since it is caught by the tip of 78, the lock bar 60, the plate lock 64, and the lock piece 72 are still held in the disengaged position.

  When the key 34 is pulled out from the key rotor 32, the movement restriction of the first slide piece 82 by the key 34 is released, and the holding of the second slide piece 78 by the first slide piece 82 is released, and the second slide piece is released. 78 can be moved to the retracted position. For this reason, the hook of the locking projection 74 with respect to the tip of the second slide piece 78 is released, and the lock bar 60, the plate lock 64, and the lock piece 72 are moved to the engagement position by the biasing force of the torsion coil spring 62. As a result, the lock bar 60 engages with a steering shaft (not shown), and the rotation of the steering shaft is restricted.

  Here, in the steering lock device 10 according to the present embodiment, the leaf spring 104 that urges the stopper pin 86 of the ignition cylinder 26 in the restricting position direction includes the inner peripheral portion of the rotor housing hole 30 and the outer peripheral portion of the key rotor 32. Are provided in an arc shape along the circumferential direction. Therefore, the arrangement space of the leaf spring 104 does not expand in the radial direction of the ignition cylinder 26, and thus the outer diameter of the ignition cylinder 26 can be reduced.

  Further, in the steering lock device 10 according to the present embodiment, since both the stopper pin 86 and the lever 94 are urged by the single leaf spring 104, the number of parts can be reduced and the ignition cylinder 26 can be made smaller. it can.

  Moreover, in the steering lock device 10 according to the present embodiment, the leaf spring 104 is provided along the circumferential direction between the inner peripheral portion of the rotor accommodating hole 30 of the rotor case 28 and the outer peripheral portion of the key rotor 32, The configuration is supported on the inner peripheral portion of the rotor accommodation hole 30 via a stopper pin 86, a lever 94, and the like. Therefore, the leaf spring 104 can be prevented from falling off the rotor case 28 without fixing the leaf spring 104 to the rotor case 28 with screws or caulking. That is, when the leaf spring 104 is provided on the outer peripheral side of the rotor case 28, a special process for supporting the leaf spring 104 on the rotor case 28 is necessary. In the apparatus 10, such a process is unnecessary, and thus the manufacturing process can be simplified and the manufacturing cost can be reduced.

  Further, in the steering lock device 10 according to the present embodiment, the stopper pin 86 is disposed on the back side (the arrow B direction side in FIG. 2) of the cylinder housing hole 24 of the lock body 12. Even if the opening side of the cylinder housing hole 24, that is, the part on the key insertion port 36 side of the key rotor 32 is broken, it is difficult to approach the stopper pin 86. Therefore, it becomes difficult for the stopper pin 86 to be broken, that is, for the ignition cylinder 26 to be pulled out from the cylinder housing hole 24, so that the anti-theft performance can be improved.

  Furthermore, in the steering lock device 10 according to the present embodiment, the stopper pin 86, the leaf spring 104, and the lever 94 are concentrated on the other axial end side of the rotor case 28. The portion on the other end side in the axial direction, that is, the portion disposed on the deeper side of the cylinder housing hole 40 than the tumbler 40 or the like does not significantly affect the anti-theft performance even if the wall thickness is reduced. The outer diameter of the rotor case 28 can be kept small, and the thickness of other parts of the rotor case 28 can be sufficiently secured to protect the tumbler 40 and the like from destruction.

  In the steering lock device 10 according to the above-described embodiment, the leaf spring 104 has a configuration in which the other end portion in the longitudinal direction is supported by the rotor case 28 via the lever 94. A groove or the like for locking the other end portion in the longitudinal direction of the leaf spring 104 may be formed on the inner peripheral portion of the leaf spring 104, and the other end portion in the longitudinal direction of the leaf spring 104 may be directly supported by the rotor case 28. However, in this case, an urging member for urging the lever 94 in the direction of engagement with the key rotor 32 is separately provided.

  Further, in the steering lock device 10 according to the above-described embodiment, the one end portion in the longitudinal direction of the leaf spring 104 is connected to the stopper pin 86. However, the present invention is not limited thereto, and the other end portion in the longitudinal direction of the leaf spring 104 is A configuration in which the stopper pin 86 is simply touched may be employed.

  Furthermore, in the steering lock device 10 according to the above embodiment, the leaf spring 104 is applied as the urging member. However, the urging member is not limited to this, and a linear spring material or the like can also be applied.

  In the steering lock device 10 according to the above embodiment, the lock body 12 as the vehicle body attachment member is attached to the steering post of the vehicle, and the ignition cylinder 26 is attached to the lock body 12. Not limited to this, the lock body 12 may be omitted, and the accommodation portion of the ignition cylinder 26 may be provided directly on the steering post.

It is a disassembled perspective view which shows the structure of the steering lock apparatus which concerns on embodiment of this invention. It is sectional drawing which shows the structure of the steering lock apparatus which concerns on embodiment of this invention. It is a disassembled perspective view which shows the structure of the ignition cylinder of the steering lock apparatus which concerns on embodiment of this invention. It is sectional drawing which shows the structure of the principal part of the steering lock apparatus which concerns on embodiment of this invention, and shows the state by which the key rotor was arrange | positioned in the LOCK position. It is sectional drawing which shows the structure of the principal part of the steering lock apparatus which concerns on embodiment of this invention, and shows the state by which the key rotor was arrange | positioned in the ACC position. It is sectional drawing which shows the structure of the principal part of the steering lock apparatus which concerns on embodiment of this invention, and shows the state by which the key rotor was arrange | positioned in the ON position. It is an expanded view which shows the structure of the leaf spring which is a structural member of the steering lock apparatus which concerns on embodiment of this invention. The structure of the leaf spring which is a structural member of the steering lock device concerning an embodiment of the invention, a stopper pin, and a lever is shown, (A) is a top view, (B) is a side view, (C) Is a top view. It is a perspective view which shows the periphery structure containing the convex part of the key rotor which is a structural member of the steering lock apparatus which concerns on embodiment of this invention. It is an expanded view which shows the periphery structure containing the convex part of the key rotor which is a structural member of the steering lock apparatus which concerns on embodiment of this invention.

Explanation of symbols

10 Steering lock device 12 Lock body (vehicle body mounting member)
28 Rotor Case 30 Rotor Housing Hole 32 Key Rotor 34 Key 36 Insertion Port 86 Stopper Pin 94 Lever 104 Leaf Spring 116 Convex

Claims (4)

A rotor case attached to the vehicle body attachment member and having a rotor accommodation hole; and an ignition cylinder having a key rotor that is accommodated in the rotor accommodation hole and rotated by a key;
A stopper pin provided in the rotor case and movable between a restriction position for restricting displacement of the ignition cylinder relative to the vehicle body mounting member and a release position for releasing the restriction;
Provided along the circumferential direction between the inner peripheral portion of the rotor receiving hole and the outer peripheral portion of the key rotor, one end abuts against the stopper pin and the other end is supported by the rotor case, and the stopper pin is An urging member for urging in the regulated position direction;
Steering lock device with A lever that is supported by the rotor case, contacts the other end of the urging member, and engages with the outer periphery of the key rotor by the urging force of the urging member;
The key rotor is rotated between a lock position and an accessory position by a rotation operation by the key, is moved in an axial direction by a push operation by the key, and a convex portion is formed on an outer peripheral portion.
In a state where the key rotor is located at the accessory position, the lever restricts the rotation of the key rotor to the lock position by interfering with the convex portion, and the convex portion by moving the key rotor in the axial direction. 2. The steering lock device according to claim 1, wherein the interference with the key rotor is released, and rotation of the key rotor to the lock position is allowed. A rotor case that is attached to the vehicle body attachment member and has a rotor accommodation hole, and is accommodated in the rotor accommodation hole, and is rotated between a lock position and an accessory position by a rotation operation by a key and by a push operation by the key. An ignition cylinder having a key rotor which is moved in the axial direction and has a convex portion formed on the outer periphery;
A stopper pin provided in the rotor case and movable between a restriction position for restricting displacement of the ignition cylinder relative to the vehicle body mounting member and a release position for releasing the restriction;
The lock of the key rotor is supported by the rotor case and engageable with the key rotor, and engages with the key rotor and interferes with the convex portion when the key rotor is located at the accessory position. A lever that restricts rotation to a position and releases the interference with the convex portion by moving the key rotor in the axial direction, and allows the key rotor to rotate to the locked position;
A circular arc is provided along the circumferential direction between the inner peripheral portion of the rotor receiving hole and the outer peripheral portion of the key rotor. An urging member that urges the stopper pin toward the restriction position and engages the lever with an outer peripheral portion of the key rotor;
Steering lock device with   The vehicle body mounting member has a cylinder accommodation hole for accommodating the ignition cylinder, and the key rotor has one end in the axial direction in which the insertion port for the key is formed disposed on the opening side of the cylinder accommodation hole. The urging member and the stopper pin are provided so as to face the other axial end of the key rotor disposed on the back side of the cylinder housing hole. The steering lock device according to claim 1.

Images