JP5216678B2 - Steering lock device - Google Patents

Description

  The present invention relates to a steering lock device that is mounted on an automobile or the like and locks a steering shaft.

  As this type of conventional steering lock device, there are those disclosed in Patent Literature 1 and Patent Literature 2. For example, a conventional steering lock device 100 (Patent Document 1) shown in FIG. 11 includes a housing 102 attached to a steering column 101, a cylinder lock 103 accommodated in the housing 102, and a rotation to the cylinder lock 103. The rotor 105 inserted and rotated by the key 104, the joint 106 rotatably supported by the housing 102 and coaxially connected to the rotor 105, and the engagement engaging with the cam groove 107 of the joint 106 A rod member 111 having an arm portion 108 and having a distal end engageable with an engagement hole 110 on the outer periphery of the steering shaft 109, a spring member 112 urging the rod member 111 toward the steering shaft 109, A rotary type that is attached to the side surface and detects the rotational position of the rotor 105 And a switch unit 113. On the cover 114 attached to one end of the housing 102, a LOCK position, an ACC position, an ON position, and a START position, which are operation positions of the key 104, are displayed.

  In the above configuration, when the occupant inserts the key 104 into the cylinder lock 103 and rotates it to a position other than the LOCK position, for example, the ACC position, the joint 106 rotates in the unlocking direction in conjunction with the rotor 105, and The rod member 111 is pressed against the urging force of the spring member 112 by sliding the joint arm portion 108 on the cam groove 107 of the joint 106, so that the rod member 111 moves away from the steering shaft 109. Thus, the state is released from the engagement hole 110. As a result, the state where the steering shaft 109 is locked is released, so that the vehicle can be steered. When the vehicle is stopped and parked, when the occupant rotates the key 104 to the LOCK position and removes it from the cylinder lock 103, the joint 106 rotates in the locking direction in conjunction with the rotor 105. When the engagement arm portion 108 slides on the cam groove 107 of the joint 106, the rod member 111 slides in the direction of the steering shaft 109 by the biasing force of the spring member 112 and engages with the engagement hole 110. Therefore, the steering shaft 109 is locked. Thereby, since the parked vehicle is kept in a state where it cannot be steered, vehicle theft can be suppressed.

  Further, another conventional steering lock device 120 (Patent Document 2) shown in FIGS. 12 and 13 includes a housing 122 attached to a steering column 121 and a cylinder housed in the housing 122 and rotated by a key 123. A lock 124, a hanger member 127 driven via a cam member 126 connected to the output shaft 125 of the cylinder lock 124, and an engagement groove of the collar 129 on the outer periphery of the steering shaft 128 connected to the hanger member 127. 130, a spring member 132 that urges the hanger member 127 in the direction of the rod member 131, and the shaft 133 of the cam member 126. And a switch 134 for turning on / off. In addition, the hanger member 127 is continuously formed with a long hole 135 extending in the longitudinal direction and a hole 136 extending in a direction perpendicular to one end of the long hole 135, and one of the hanger members 127 in the short direction. On the other side, an engaging groove 138 is formed to engage a locking member 137 provided in the housing 122.

  In the above configuration, when the occupant inserts the key 123 into the cylinder lock 124 and rotates it to a position other than the LOCK position, for example, the ACC position, the cam member 126 rotates in the unlocking direction in conjunction with the output shaft 125. The rod member 131 is pressed against the urging force of the spring member 132 via the hanger member 127, so that the rod member 131 moves away from the steering shaft 128 and is kept away from the engagement groove 130. As a result, the locked state of the steering shaft 128 is released. At this time, the locking member 137 provided in the housing 122 is engaged with the engagement groove 138 of the hanger member 127, whereby the rod member 131 is held at the unlocked position. As a result, the vehicle can be steered. When the vehicle is stopped and parked, when the occupant rotates the key 123 to the LOCK position and removes it from the cylinder lock 124, the locking member 137 moves backward from the engagement groove 138 and engages. Is released, and the urging force of the spring member 132 causes the hanger member 127 and the rod member 131 to move in the direction of the steering shaft 128 and engage with the engagement groove 130, so that the steering shaft 128 is locked. Thereby, since the parked vehicle is kept in a state where it cannot be steered, vehicle theft can be suppressed.

JP 2001-260818 A Japanese Utility Model Publication No. 62-22169 European Patent Publication No. 1084415

  However, in the conventional steering lock device 100 disclosed in Patent Document 1, when the unauthorized unlocking person hits the housing 102 with the steering shaft 109 locked by the rod member 111 when the vehicle is parked, The rod member 111 may move in the unlocking direction due to the reaction of the impact, and the lock may be released.

  Further, in the conventional steering lock device 120 disclosed in Patent Document 2, when a person who performs unauthorized unlocking hits the housing 122 with the steering shaft 128 locked by the rod member 131 when the vehicle is parked, The pin 139 projecting from the cam member 126 engages with the engagement edge 136a of the hole 136, the rod member 131 is prevented from moving in the unlocking direction, and the locked state is maintained. However, since the tip of the pin 139 is always urged on the housing 122 or the hanger member 127, a sliding resistance is always generated when the occupant rotates the key 123. There was a problem of getting worse.

  Furthermore, the conventional steering lock device disclosed in Patent Document 3 has a problem that the configuration becomes complicated and the manufacturing cost increases.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a steering lock device that prevents a problem that a vehicle can be steered by an unauthorized unlocking operation when the vehicle is parked while reducing sliding resistance during operation with a simple configuration. And

  The invention of claim 1 that achieves the above object is a housing having a substantially cylindrical shape, and is disposed at the front end side of the housing, and is rotatable in the circumferential direction of the central axis of the housing and slidable in the axial direction An operating portion having a cylinder lock that is rotated by a key that can be inserted and removed, a rotator that is linked to the operating portion and that is rotated by a rotating operation of the operating portion, A lock slider that is urged radially outward while being slidable and linked to the rotator, and a lock position in which the distal end projects from the base end side of the housing by the rotation of the rotator A lock member slidably disposed between the lock release position accommodated in the housing, lock urging means for urging and holding the lock member toward the lock position, the cylinder lock, Lo A lever member that is swingably provided between the members, a key linking portion that is pushed radially outward from the central axis of the housing by inserting a key at a cylinder lock side end of the lever member, and the lever member A lock engaging portion at an end of the lock member; and a release holding portion formed to be engageable with the lock engaging portion in a direction of sliding to the lock member in the lock member. The unlocking position side surface is an inclined surface whose front end side is inclined toward the locking position side, and the lock slider protrudes while the locking member is in the locking position, and the unlocking of the movement restricting projection formed on the locking member is released. When the lock member is moved to the unlocking position with the key inserted into the cylinder lock, the release holding part and the lock engaging part are engaged. , The lock When the member is held in the unlocked position and the key is pulled out from the cylinder lock, the key linkage moves in the direction of the central axis of the housing, and the lock engaging part and the release holding part are engaged. Is released and the lock member held at the unlock position is moved by the lock urging means, the movement restricting projection comes into contact with the inclined surface of the lock slider, the lock slider is submerged in the rotator, and the lock member is locked. It is characterized by moving to a position.

  According to the first aspect of the present invention, the lock slider is locked even if a person who unlocks the vehicle at the time of parking the vehicle applies an impact to the housing so as to slide the lock member and the hanger member in the unlocking direction. Since the movement of the lock member to the lock release position is restricted by engaging the side surface of the member at the lock release position side, the lock state of the steering shaft can be maintained by the lock member. Therefore, it is possible to prevent a problem that the vehicle can be steered by an unauthorized unlocking operation, and to improve the anti-theft property of the vehicle.

  In addition, the lock slider is disposed so as to be able to project and retract, and the side surface of the lock slider on the unlocking position side is an inclined surface whose tip side is inclined toward the locking position side, so that the locking member is moved from the unlocking position to the locking position. When moving, the lock slider is submerged in the rotator, so that the movement of the lock member that has been moved to the lock position to the unlock position can be restricted without hindering the movement of the lock member to the lock position. it can.

  In addition, since the lock slider moves along the radial direction of the rotator, a space required for disposing the lock slider is provided along the radial direction of the rotator, so that the axial dimension of the entire rotator is increased. In addition, the anti-theft property of the vehicle can be improved by a simple and durable structure.

It is sectional drawing which shows one Embodiment of this invention and shows the locked state of a steering lock apparatus. It is sectional drawing which shows one Embodiment of this invention and follows the II-II line | wire of FIG. It is a figure which shows one Embodiment of this invention and shows the positional relationship of a rotator and a hanger member at the time of a lock | rock. It is sectional drawing which shows one Embodiment of this invention and shows the lock release state of a steering lock apparatus. FIG. 5 shows an embodiment of the present invention, and is a cross-sectional view taken along line VV in FIG. 4. It is a figure which shows one Embodiment of this invention and shows the positional relationship of a rotator and a hanger member at the time of lock release. It is sectional drawing which shows one Embodiment of this invention and shows the state before removing a key from the cylinder lock of a steering lock apparatus. FIG. 8 shows an embodiment of the present invention, and is a cross-sectional view taken along line VIII-VIII in FIG. 7. It is a figure which shows one Embodiment of this invention and shows the positional relationship of a rotator and a hanger member before removing a key from a cylinder lock. 1 shows an embodiment of the present invention and is a perspective view of a rotator. FIG. It is sectional drawing which shows the conventional steering lock apparatus. It is sectional drawing which shows the other conventional steering lock apparatus. It is sectional drawing which expands and shows the principal part of the prior art example of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 10 show an embodiment of the present invention.

  As shown in FIGS. 1 to 10, the steering lock device 1 has a housing 2, and a cylinder lock 4 operated by a key 3 is operated in the housing 2 in accordance with an operation of the cylinder lock 4. The lock main body 5 constituting the lock member 6, the support member 2 a that supports the lock main body 5 so as to be slidable in the axial direction of the cylinder lock 4, and the cylinder lock 4 are connected to the cylinder lock 4 and rotate together. The rotator 7 engages with the lock body 5 and is driven by the rotator 7 in the unlocking direction of the lock body 5 to hold the hanger member 8 constituting the lock member 6 and the hanger member 8 in the locked position when locked. There are provided a lock holding means 9 for holding, and a lock release holding means 10 for holding the hanger member 8 at the lock release position when the lock is released.

  In this embodiment, the lock body 6 and the hanger member 8 constitute the lock member 6. However, when conditions such as strength, molding, and workability are satisfied, the lock body 5 and the hanger member 8 are provided. And may be integrally formed.

  The cylinder lock 4 is housed on one end side of the housing 2 and can be rotated to a LOCK position, an ACC position, an ON position, and a START position by operating the key 3, and one end of the cylinder inner 40 And a protruding portion 41 protruding in the direction of the rotator 7. The cylinder inner 40 has a key hole 42 that extends in the axial direction and into which the key 3 is inserted, and a key slider accommodation hole 43 that extends in the radial direction from the key hole 42 and penetrates the outer peripheral surface. 43, a key slider 44 is slidably inserted. A lever member 45 is provided between the inner periphery of the housing 2 and the outer periphery of the cylinder lock 4 so as to be swingable like a balance, and is rotated in the direction of the cylinder lock 4 by a spring member (lever urging means) 46. Is being energized.

  The swing shaft 45c that pivotally supports the lever member 45 is disposed so as to be movable in the radial direction in the U-shaped groove 2b formed in the housing 2 along the radial direction of the cylinder lock 4. 45 is configured to be movable along the radial direction of the cylinder lock 4. The slider link portion 45 a formed at the cylinder lock side end of the lever member 45 can abut against the key 3 inserted into the cylinder lock 4 via the key slider 44 at the lock position. The lock engaging portion 45 b formed at the end of the lock member can be locked to the hanger member 8.

  The lock body 5 is housed on the other end side of the housing 2 and is urged in the direction of a steering shaft (not shown) by a winding spring (lock urging means) 50 to lock a lock groove (not shown) on the outer periphery of the steering shaft. And an engaging groove 51 into which a connecting engaging portion 81 (described later) of the hanger member 8 is engaged.

  The hanger member 8 protrudes from the longitudinal end of the base 80 toward the center of the housing 2 and engages with the engaging groove 51 of the lock body 5. A connecting engagement portion 81, a movement restricting projection 82 projecting from an intermediate portion in the longitudinal direction of the base portion 80 toward the center of the housing 2, and a projection along the circumferential direction of the housing 2 from the other end of the base portion 80. And a release holding portion 83 that can lock the lock engaging portion 45b of the lever member 45.

  The rotator 7 is formed in a substantially disc shape and includes a lock slider receiving hole 70 penetrating in the radial direction. The rotator 7 has a fitting hole 71 into which the protruding portion 41 of the cylinder lock 4 is fitted on one end side. It has the axial part 72 supported by the support member 2a on the side so that rotation is possible. The lock slider accommodating hole 70 accommodates a spring member 74 and a lock slider 75 biased by the spring member 74, and the distal end side of the lock slider 75 protrudes from the lock slider accommodating hole 70 and contacts the hanger member 8. It is possible to contact. Of the distal end portion of the lock slider 75, the end surface on the unlocking position side facing the cylinder lock 4 is provided with a curved portion 75 a whose distal end side is inclined toward the lock position side. Further, the rotator 7 is provided with a gear portion 76 and a cam portion 77 on the outer peripheral side, and the rotating body 78 is driven via the gear portion 76. The cam portion 77 has a first cam surface 77a with which the movement restricting protrusion 82 of the hanger member 8 is slidably contacted when locked, and a second cam surface 77b with which the movement restricting protrusion 82 is slidably contacted when unlocked. It gradually rises from 77a to the second cam surface 77b.

  The support member 2 a is fixed to the other end side in the housing 2, and has an insertion hole 60 into which a shaft portion 72 (described later) of the rotator 7 is inserted at one end side, and a winding spring (lock) on the opposite side of the insertion hole 60. A spring receiving portion 61 for receiving an urging means) 50 is provided.

  The lock holding means 9 includes the spring member 74 and the lock slider 75 described above. When the lock slider 75 is locked, the lock slider 75 comes into contact with the unlocking position side surface 82 a of the movement restricting protrusion 82 of the hanger member 8. Hold in the locked position.

  The lock release holding means 10 has the lever member 45 and the spring member 46 described above, and when the key 3 is pulled out from the cylinder lock 4 at the lock position, the lever member 45 is held by the urging force of the spring member 46. , The state of holding the hanger member 8 at the unlock position is released.

  In the above configuration, in the locked state in which the lock main body 5 is positioned at the lock position, the rotator 7 is at the lock position as shown in FIGS. The lock body 5 protrudes from the housing 2 toward the steering shaft by the urging force of the winding spring 50 until it abuts against 77a, and the tip engages with a lock groove (not shown) on the outer periphery of the steering shaft. Locked. This keeps the parked vehicle in an unmanageable state. The lock slider 75 protrudes from the rotator 7 and engages with the unlocking position side surface 82a of the movement restricting projection 82, whereby the lock member 6 including the lock body 5 and the hanger member 8 is locked. The movement to the release position is restricted and held at the lock position.

  Next, as shown in FIGS. 4 to 6, when the occupant inserts the key 3 into the cylinder lock 4 and rotates it to a position other than the LOCK position, for example, the ACC position, the rotator 7 rotates to the unlocked position. The movement restricting projection 82 of the hanger member 8 abuts against the second cam surface 77 b, moves against the winding spring 50 without interfering with the lock slider 75, and is accommodated in the housing 2. The hanger member 8 moves to the unlock position. Further, the slider linking portion 45a of the lever member 45 abuts on the outer periphery of the cylinder inner 40, and the lock engaging portion 45b of the lever member 45 moves to the outer side in the radial direction of the cylinder lock 4 together with the swing shaft 45c. The release holding part 83 is overcome. Then, the lock engaging portion 45 b that has passed over the release holding portion 83 is locked to the release holding portion 83 by the urging force of the spring member 46, whereby the lock member 6 is held at the lock release position.

  Next, as shown in FIGS. 7 to 9, when the occupant rotates the key 3 to the LOCK position, the rotator 7 rotates to the lock position, but the lock engagement portion 45 b of the lever member 45 is the release holding portion 83. Since the lock body 5 is kept in the housing 2, the hanger member 8 is positioned at the lock release position. In this state, as shown in FIGS. 1 to 3, when the occupant pulls out the key 3 from the cylinder lock 4, a part of the key slider 44 enters the key hole 42, and the lever member 45 moves counterclockwise in FIG. Since it rotates, the engagement between the lock engaging portion 45b at the other end of the lever member 45 and the release holding portion 83 of the hanger member 8 is released.

  As a result, the lock body 5 and the hanger member 8 are moved in the locking direction by the urging force of the winding spring 50. At this time, while the hanger member 8 is moving, the movement restricting projection 82 is in sliding contact with the curved portion 75 a of the lock slider 75, so that the lock slider 75 is submerged in the rotator 7, thereby preventing the hanger member 8 from moving. Absent. Further, until the movement restricting protrusion 82 of the hanger member 8 contacts the first cam surface 77a, the lock body 5 protrudes from the housing 2 toward the steering shaft, and the lock body 5 and the hanger member 8 move to the locked position. Is completed, the lock slider 75 projects again, engages with the unlocking position side surface 82a of the movement restricting projection 82, and the lock member 6 including the lock body 5 and the hanger member 8 moves to the unlock position. Is regulated and held in the locked position.

  As described above, when a person who performs unauthorized unlocking at the time of vehicle parking hits the housing 2 to open a hole, and the lock body 5 or the hanger member 8 is illegally operated in the unlocking direction through the hole, or When an impact is applied to the housing 2 so that the lock body 5 and the hanger member 8 are slid in the unlocking direction, the hanger member 8 is held at the lock position by the lock holding means 9 at the time of locking. Since the movement of the lock main body 5 in the unlocking direction is restricted through this, the lock main body 5 can maintain the locked state of the steering shaft. Therefore, it is possible to prevent a problem that the vehicle can be steered by an unauthorized unlocking operation, and to improve the anti-theft property of the vehicle.

  In addition, the lock slider is disposed so as to be able to project and retract, and the side surface of the lock slider on the unlocking position side is an inclined surface whose tip side is inclined toward the locking position side, so that the locking member is moved from the unlocking position to the locking position. When moving, the lock slider is submerged in the rotator, so that the movement of the lock member that has been moved to the lock position to the unlock position can be restricted without hindering the movement of the lock member to the lock position. it can.

  Furthermore, when the vehicle travels in the unlocked state of the steering shaft, the lock release holding means 10 can hold the hanger member 8 at the unlocked position to restrict movement of the lock body 5 in the locking direction. It is also possible to improve safety when the vehicle is running.

  In addition, since the lock slider 75 moves along the radial direction of the rotator 7, the lock slider accommodating hole 70 necessary for disposing the lock slider 75 is provided along the radial direction of the rotator 7. The anti-theft property of the vehicle can be improved without increasing the axial dimension of the entire rotator 7.

DESCRIPTION OF SYMBOLS 1 ... Steering lock apparatus 2 ... Housing 3 ... Key (operation part)
4 ... Cylinder lock (operation part)
DESCRIPTION OF SYMBOLS 6 ... Lock member 7 ... Rotator 43 ... Key slider accommodation hole 44 ... Key slider 45 ... Lever member 45a ... Slider link part 45b ... Lock engaging part 46 ... Lever biasing means 50 ... Winding spring (lock biasing means)
75: Lock slider 75a: Curved part (side surface of the lock slider at the unlocking position)
82a ... Lock release position side surface of the lock member 83 ... Release holding part

Claims (1)

A housing having a substantially cylindrical shape;
A cylinder lock disposed on the front end side of the housing, disposed so as to be rotatable in the circumferential direction of the central axis of the housing and slidable in the axial direction, and operated to be rotated with a detachable key. An operation unit to
A rotator linked to the operation unit and rotated by a rotation operation of the operation unit;
Inside the rotator, while being urged radially outward, a lock slider disposed so as to be able to project and retract;
A lock that is linked to the rotator and is slidable between a lock position in which a tip projects from the base end side of the housing and a lock release position accommodated in the housing by the rotation of the rotator Members,
Lock urging means for urging and holding the lock member toward the lock position;
A lever member swingably provided between the cylinder lock and the lock member;
A key linkage portion that is pushed radially outward from the central axis of the housing by inserting a key into the cylinder lock side end of the lever member;
A lock engaging portion at the lock member side end of the lever member;
A release holding portion formed so as to be able to engage with the lock engaging portion with respect to the direction of sliding to the lock position on the lock member;
The side surface on the unlocking position side of the lock slider is an inclined surface whose tip side is inclined toward the locking position side,
In a state where the lock member is located at the lock position, the lock slider protrudes and engages with the side surface on the unlocking position side of the movement restricting protrusion formed on the lock member,
When the key is inserted into the cylinder lock and the lock member moves to the lock release position, the release holding portion and the lock engagement portion are engaged, and the lock member is in the lock release position. Held in
When the key is pulled out from the cylinder lock, the key linking part moves in the direction of the center axis of the housing, and the engagement between the lock engagement part and the release holding part is released and held in the lock release position. The lock member that has been moved is moved by the lock urging means, the movement restricting projection comes into contact with the inclined surface of the lock slider, the lock slider is immersed in the rotator, and moves to the lock position. Steering lock device.

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