JP6566838B2 - Steering lock device - Google Patents

Description

  The present invention relates to a steering lock device.

  A steering lock device described in Patent Document 1 is known as a steering lock device that locks a steering shaft of a vehicle in a locked state and restricts an operation to the steering.

  In this conventional example, the steering lock device is formed by inserting an outer cylinder holding a plug into a housing holding a lock bolt for engaging and disengaging the steering shaft. The lock bolt is driven by a slider that converts a rotation operation to the plug into a translation operation, and a blocking member is mounted on the housing so as to be movable in the length direction of the rotation axis of the plug.

  The blocking member is pressed against the outer cylinder by a spring, and is retracted from the slider moving path in the pressed state to allow the slider to move.

  When the outer cylinder is illegally pulled out of the housing, the blocking member that has lost its support by the outer cylinder moves in the biasing direction by the spring. The blocking member is locked to the slider along with the movement in the urging direction, and the movement of the slider and the lock bolt that moves together with the slider is restricted. As a result, the lock bolt is held at the lock position and an unauthorized unlocking operation is performed. It is prevented.

JP 2010-12989 A

  However, in the above-described conventional example, in order to reduce the weight, when the housing constituting the outer skin of the steering lock device is formed of a synthetic resin material, after the hole is made in the housing from the outside, the adhesive or the like supplied from the perforation is used. Unauthorized unlocking operation of fixing the blocking member and removing the outer cylinder cannot be prevented.

  As a result, the housing needs to be formed of a metal material that cannot be easily drilled, and there is a problem that the weight of the part cannot be achieved.

  The present invention has been made to eliminate the above-described drawbacks, and has an object to provide a steering lock device that has high resistance to unauthorized unlocking operation and can reduce the weight of the device.

According to the present invention, the object is
The frame 2 in which the cylinder lock 1 is inserted is translated by the cylinder lock 1 between the lock position and the unlock position, and a dead case 4 that holds a dead bolt 3 that is locked to the steering shaft of the vehicle is connected in the lock position. And a steering lock device capable of detecting the separation between the dead case 4 and the cylinder lock 1 by the displacement of the detection rod 6 biased by the spring 5 and having one end pressed against the cylinder lock 1.
The cylinder lock 1 and the dead case 4 are formed of a metal material, and the frame 2 is formed of a synthetic resin material.
And the movement path | route of the detection rod 6 is achieved by providing the steering lock device covered with cylinder lock 1 or dead case 4 over the full length.

  The steering lock device inserts a plug 11 into a cylinder case 12 and accommodates a cylinder lock 1 that enables a relative rotation operation with respect to the cylinder case 12 by a genuine unlocking key and a dead bolt 3 that locks a steering shaft. The case 4 is formed by being connected via the frame 2, and the weight of the entire apparatus can be reduced by forming the frame 2 from a synthetic resin material.

  Further, the movement path of the detection rod 6 is covered with the cylinder case 12 formed of a metal material or the dead case 4 over the entire length, so that a hole is made in the synthetic resin frame 2 and an adhesive or the like is poured into the detection rod 6. By fixing 6, it is possible to reliably prevent an unauthorized unlocking operation that is performed while avoiding detection of unauthorized removal of the cylinder case 12 by the detection rod 6.

  Further, since the detection rod 6 is concealed by using a part of the cylinder case 12 or the dead case 4, no special shielding parts are required, so that the cost increases or the assembly increases due to an increase in the number of parts. It becomes possible to prevent a decrease in workability.

As another aspect of the present invention for achieving the above object,
A cover portion 7 that covers the facing surface of the detection rod 6 to the inner wall of the frame 2 protrudes from the dead case 4, and
The cylinder lock 1 can be configured as a steering lock device provided with a pressing protrusion 8 that pushes the pressure contact boundary with the detection rod 6 into the enclosed region by the cover portion 7 when mounted on the frame 2.

  In the present invention, when the cylinder case 12 is mounted, that is, in the assembled state, the contact interface between the detection rod 6 and the cylinder case 12 is pushed by the pressing protrusion 8 projecting from the cylinder case 12 to cover it. It is pushed into the enclosed area by the part 7.

  Since the outside is covered with the frame 2, the boundary between the cylinder case 12 and the detection rod 6 cannot be seen from the outside. Therefore, the cylinder case 12 of the frame 2 can be simply covered by the movement path of the detection rod 6. In general, it is difficult to supply an adhesive or the like by making a hole at the boundary position between the cylinder case 12 and the detection rod 6. However, as in the present invention, the contact portion between the cylinder case 12 and the detection rod 6 is placed in the cover portion 7. When positioned, it becomes possible to completely prevent the adhesive from being supplied to the tip of the detection rod 6.

Furthermore, as another aspect of the present invention for achieving the above object,
The base end of the pressing protrusion 8 and the free end of the cover part 7 are arranged in a non-overlapping manner in a side view, and the cover part 7 opens in the central axis direction of the cylinder lock 1 and the central axis of the pressing protrusion 8 A steering lock device having a C-shaped cross section that allows movement in the direction can be configured.

  In the present invention, when the cylinder case 12 and the dead case 4 are mounted on the frame 2, the base end of the pressing projection 8 and the free end of the cover portion 7 are arranged in a non-polymerized state in a side view, and the cover portion Since 7 has a C-shaped cross-sectional shape with the center direction opened, a space for the pressing protrusion 8 to move inward is secured.

  As a result, even when a vehicle accident or the like occurs and the driver's knee collides with the steering lock, the steering lock can be bent from the boundary between the cover portion 7 and the base end portion of the pressing protrusion 8. Therefore, the emergency breaking resistance caused by covering the detection rod 6 with the cover portion 7 does not increase, and the driver's safety during an accident is not reduced.

Also,
The detection rod 6 is formed in a plate shape and is movable with the cover portion 7 as a guide,
In addition, when the pressing protrusion 8 is formed in a thin pin shape and constitutes a steering lock device that presses the tip end surface of the detection rod 6 as a pressed portion, the pressing protrusion 8 has a small pin shape. Since it is formed and easily broken, the deformation resistance when the knee hits at the time of an accident can be lowered.

  Furthermore, the contact state between the pressed portion and the pressing protrusion 8 is the cylinder lock 1 by adopting a configuration in which the end face of the plate-shaped detection rod 6 is used as a pressed portion and the small-diameter pin-shaped pressing protrusion 8 is brought into contact. Therefore, even a small amount of displacement with the dead case 4 is immediately eliminated, so that the detection accuracy is increased.

  For example, the output of the detection rod 6 can be prepared for theft by restraining the dead bolt 3 by electromagnetic means after being detected by a switch, but it is directly dead by a mechanical mechanism that is operated by the displacement of the detection rod 6. The bolt 3 can be restrained to prevent theft.

in this case,
The dead case 4 can be moved between a dead regulation position where the dead bolt 3 is locked to hold the dead bolt 3 in a locked position, and a dead regulation release position where the dead bolt 3 is unlocked. And having a dead stopper 9 biased to the dead regulation position side,
The detection rod 6 is engaged with the dead stopper 9 to hold the dead stopper 9 at the dead restriction release position, and between the stopper lock release position where the dead stopper 9 is released. The steering lock device that is urged toward the stopper locking release position and incorporated in the dead case 4 can be configured.

  As a countermeasure against the illegal destruction operation, it is sufficient to operate the dead stopper 9 by the movement of the detection rod 6 when the dead bolt 3 is in the locked position, thereby restricting the movement of the dead bolt 3 toward the unlock position. If the dead bolt 3 can be held in the unlocked position at the time of detection by the saddle 6, even if the knee hits in the event of an accident and the cylinder lock 1 and the dead case 4 are separated, the steering is inadvertently locked. There is no transition.

In this case, the steering lock device
In addition to the locked position, the dead bolt 3 is configured to be provided with an unlocking locking groove 10 for locking the dead stopper 9 at the unlocked position.

  According to the present invention, since the frame is formed of a synthetic resin, the weight can be reduced, and the movement path of the detection rod is covered with a cylinder lock formed of a metal material or a dead case. Unauthorized access is disabled, and resistance to unauthorized unlocking operations can be increased.

  Moreover, the concealment of the access route to the detection rod is integrally formed with a dead case or the like, and thus no special member is required.

It is sectional drawing which shows this invention, and is the sectional view on the 1A-1A line of Fig.3 (a). It is the 2A-2A sectional view taken on the line of Fig.3 (a). It is a figure which shows this invention, (a) is the 3A direction arrow directional view of FIG. 1, (b) is the 3B-3B sectional view taken on the line of FIG. 3 (a). It is a figure which shows the assembly method of a steering lock apparatus. It is a figure which shows a dead case, (a) is a bottom view, (b) is a figure which shows the relationship between the dead bolt and the dead stopper which looked at (a) from 5B direction, (c) is the 5C-5C line | wire of FIG. It is sectional drawing. It is a figure which shows when a dead stopper exists in a dead regulation cancellation | release position, (a) is a figure corresponding to FIG.5 (b), (b) is the figure which looked at FIG.5 (b) from the 6B direction, (c) is FIG. The figure corresponding to FIG.5 (c), (d) is sectional drawing which shows the state hold | maintained at the dead regulation cancellation | release position by the detection rod. It is a figure which shows the positional relationship of a cylinder lock | rock and a dead case, (a) is a bottom view, (b) is a 7B direction arrow directional view of (a).

  As shown in FIG. 1 and subsequent figures, the steering lock device has a frame 2, a cylinder lock 1, and a dead case 4.

  The frame 2 is formed in an elbow shape from a synthetic resin material for weight reduction, and the cylinder lock 1 is accommodated from one opening and the ignition switch 13 is accommodated at the other end.

  The cylinder lock 1 includes a plug 11 that is inserted into a cylinder case 12 formed of a metal material such as a zinc alloy, a cylinder case 12, and a position cap 1 a that covers the front end opening of the frame 2. It can be rotated with respect to the cylinder case 12 by an outside genuine unlocking key. Although not shown, position marks such as “STOP” and “START” are displayed on the position cap 1a.

  A key detection piece 14 is attached to the front end portion of the plug 11 so as to be movable in the radial direction, and the detection tip 15a formed at the front end of the swing lever 15 attached to the cylinder case 12 moves in the center direction. Pressed. The swing lever 15 has a connecting hook 15b at the rear end and is swingable around a swing shaft 15c in the center. The detection tip 15a plugs the key detection piece 14 into the plug 11 by a lever spring 15d made of a compression spring. It is urged in the direction of pushing in.

  Therefore, in this example, when the unlocking key is not inserted into the plug 11, as shown in FIG. 1, the swing lever 15 pushes the key detection piece into the plug 11, and the connecting hook 15 b moves away from the rotation center of the plug 11. Move in the direction (hereinafter, the direction is referred to as “centrifugal direction” and the opposite direction is referred to as “centric direction”) When the unlocking key is inserted into the plug 11 from this state, the key detecting piece 14 is pushed out in the centrifugal direction by the unlocking key. As a result, the swing lever swings clockwise in FIG. Then, when the plug 11 is rotated, the detection tip 15a of the swing lever 15 rides on the outer peripheral wall of the plug 11, and thereafter the connecting hook 15b maintains the same posture.

  Further, a cam member 16 is connected to the rear end of the plug 11. The cam member 16 includes a cam surface (not shown) and a bevel gear 16 a and rotates as the plug 11 rotates. As shown in FIG. 1, the drive shaft 13 a of the ignition switch 13 is engaged with the bevel gear 16 a of the cam member 16, and the switch operation of the ignition switch 13 is performed as the plug 11 is rotated.

  On the other hand, the front opening of the frame 2 is opened rearward, and the dead case 4 is fixed so as to close the rear opening. The dead case 4 is formed of a metal material such as a zinc alloy like the cylinder case 12, and the dead bolt 3 is slidably inserted into a bolt insertion portion 4 b formed in the dead case 4.

  The dead bolt 3 intersects the rotation center line of the plug 11 at an acute angle crossing angle (θ). As shown in FIG. 1, the dead bolt 3 has a locked position where the rear end protrudes from the dead case 4 and the entire dead case. 4 to move to the unlocked position accommodated in 4. The dead bolt 3 is urged toward the lock position by a compression spring 17 for dead. At the lock position, the projecting portion is locked to a steering shaft (not shown) to fix the steering shaft and to operate the steering. Ban.

  In order to translate the dead bolt 3, the dead bolt 3 is formed with a connection notch 3a, and the rear end of the hanger rod 18 is locked. The hanger rod 18 includes a connection opening 18a that can be engaged with the connection hook 15b of the swing lever 15 at the front end, and a follower portion 18b that abuts the cam surface of the cam member 16 at an intermediate portion.

  Accordingly, in this example, when a genuine unlocking key is inserted into the plug 11 from the locked state of FIG. 1 and rotated by a predetermined angle in the unlocking direction, the cam surface of the cam member 16 contacts the follower portion 18b of the hanger rod 18. When the contact is started and the rotation operation of the plug 11 is continued, the hanger rod 18 is driven forward by the cam surface. Due to the movement of the hanger rod 18, the dead bolt 3 moves to the unlocked position while compressing the dead compression spring 17.

  As described above, since the connecting hook 15b of the swing lever 15 holds the position moved in the centripetal direction by inserting and rotating the unlocking key, eventually the hanger rod 18 is moved forward. The tip of the hanger rod 18 and the connecting hook 15b of the swing lever 15 abut.

  On the other hand, the rocking shaft 15c of the rocking lever 15 is movable in the radial direction and biased in the centripetal direction, and the connecting hook 15b is brought into contact with the hanger rod 18 so that the rocking lever 15 When the swing center moves once in the centrifugal direction, the tip edge of the hanger rod 18 is received, and then elastically locked to the connection opening 18a.

  The restraint of the hanger rod 18 by the swing lever 15, that is, the holding of the dead bolt 3 in the locked position is thereafter performed by rotating the plug 11 to the initial rotational position and releasing the restriction of the hanger rod 18 by the cam surface of the cam member 16. Maintained even after. Thereafter, when the unlocking key is removed at the initial rotation position of the plug 11, the key detection piece 14 is allowed to settle into the plug 11, so that the swing lever 15 swings. As a result, the swing lever and the hanger The lock with the rod is released, and the dead bolt 3 is moved to the lock position by the restoring force of the dead compression spring 17.

  1 and 3B, reference numeral 19 denotes a metal protective cover for preventing an attack from the outside of the dead bolt 3 and the swing lever.

  Further, as shown in FIG. 4 and subsequent figures, the dead case 4 incorporates a dead stopper 9 and a detection rod 6 in addition to the dead bolt 3 and the hanger rod.

  As shown in FIG. 4, the dead stopper 9 is a plate-like member that is formed in the dead case 4 and is movable along a bottomed stopper guide concave portion 4a orthogonal to the bolt insertion portion 4b. Is biased in the direction of arrow S. As shown in FIG. 5C, the dead stopper 9 includes a stopper projection 9a protruding from the lower edge, a spring fitting recess 9b recessed at the lower edge, and a stopper recessed at the upper edge. And one end of the stopper compression spring 20 is fitted into the spring fitting recess 9b and inserted into the stopper guide recess 4a.

  On the other hand, on one side of the dead bolt 3, as shown in FIG. 5, when the dead bolt 3 is in the unlocked position, an unlocking locking groove 10 corresponding to the stopper guide recess 4a and the dead bolt 3 locked position. , A locking locking groove 21 corresponding to the stopper guide recess 4a is provided.

  The dead stopper 9 is assembled by first inserting the stopper compression spring 20 and the dead stopper 9 into the stopper guide recess 4a and then pushing the dead stopper 9 against the reaction force of the stopper compression spring 20 in this state. The dead bolt 3 is pushed to the unlock position, and then the pushing force against the dead stopper 9 is released. When the pushing force is released, the dead stopper 9 is moved upward by the restoring force of the stopper compression spring 20, and the stopper protrusion 9a is formed in the unlocking locking groove 10 of the dead bolt 3 as shown in FIG. The dead bolt 3 is moved to the locking dead restriction position, and thereafter, the dead bolt 3 is restricted from moving in the forward and backward directions and held in the unlock position.

  As shown in FIGS. 2 and 4, the detection rod 6 is a plate-like member having a stopper portion 6 a at the rear end, and is arranged parallel to the rotation axis of the plug 11. As shown in FIG. 3 (b), the detection rod 6 is guided by a rod guide recess 22 that is formed in a C-shaped cross section and intersects the stopper guide recess 4a. After the detection rod compression spring (spring 5) is inserted into the rod 22, it is mounted in the rod guide recess 22.

  As shown in FIG. 4, the detection rod compression spring 5 is in a free state in which the detection rod 6 is attached, and the dead case 4 has a cover portion 7 that reaches the tip of the inserted detection rod 6. The stopper guide recess 4 a extends to the cover portion 7.

  As shown in FIG. 4, the dead case 4 in which the detection rod 6 or the like is incorporated as described above is fixed to the rear end portion of the frame 2 using a fixing pin or the like that is inserted into the connection hole 2a.

  The frame 2 is provided with a regulating wall 2b that abuts the front end face of the detection rod 6 and regulates the movement into the frame 2 in a state where the dead case 4 is fixed. , The detection rod 6 is prevented from coming out of the dead case 4 due to paranoia. Further, with the dead case 4 fixed to the frame 2, a part of the front end surface of the detection rod 6 is in contact with the restriction wall 2 b and shielded from the cylinder lock 1 side, and an end face that is not concealed by the restriction wall 2 b is used as a pressed part. used.

  Assembling the steering lock device, after fixing the dead case 4 to the frame 2 as described above, insert the cylinder lock 1 with the pin-shaped pressing protrusion 8 protruding from the rear end portion into the frame 2. Done. With the insertion operation of the cylinder lock 1, the pressing projection 8 enters the rod guide recess 22 surrounded by the cover portion 7 and presses the pressed portion of the detection rod 6.

  As described above, in the initial state of the dead stopper 9 before the dead case 4 is attached to the frame 2, the stopper protrusion 9a is engaged with the unlocking engagement groove 10 of the dead bolt 3, and in this state, As shown in FIG. 4, the detection rod 6 is restricted from entering the stopper guide recess 4 a by the dead stopper 9. Since the detection rod 6 cannot be pushed in by the pressing projection 8 in this state, the insertion operation of the cylinder lock 1 causes the dead stopper 9 to resist the reaction force of the stopper compression spring 20 as shown in FIG. The stopper projection 9a is pushed down to the dead regulation release position where it is detached from the unlocking locking groove 10.

  When the cylinder lock 1 is inserted into the frame 2 with the dead stopper 9 pushed down as described above, the pressed portion is pushed by the pressing protrusion 8 of the cylinder case 12 as shown in FIG. It enters the stopper guide recess 4a and moves to the stopper locking position. As a result, as shown in FIGS. 6D and 7, the stopper portion 6a of the detection rod 6 is locked in the stopper groove 9c of the dead stopper 9, and thereafter the dead stopper 9 is held at the dead restriction release position. In addition, the forward / backward movement of the dead bolt 3 is not restricted by the dead stopper 9.

  As described above, when the steering lock device is operated in the normal mode and the dead bolt 3 is in the locked state in the locked position, when the cylinder lock 1 is illegally pulled out and destroyed, The relative position changes, and as a result, the restraint of the detection rod 6 by the pressing protrusion 8 is released.

  When the restraint on the detection rod 6 is released, the detection rod 6 moves rearward by the restoring force of the detection rod compression spring 5 and moves to a stopper lock release position where the lock with the dead stopper 9 is released. The restraint by the detection rod 6 of the stopper 9 is released, and the dead stopper 9 is returned to the dead regulation position by the stopper compression spring 20. Due to the movement of the dead stopper 9 to the dead regulation position, the stopper protrusion 9a of the dead stopper 9 is engaged with the locking groove 21 for locking the dead bolt 3 to restrict the movement of the dead bolt 3, thereby preventing unauthorized unlocking operation. Can be removed.

  In this example in which the pressing protrusion 8 is formed in a thin pin shape and the pressed portion is formed on the end surface of the plate-shaped detection rod 6, the contact area between the pressing protrusion 8 and the pressed portion is small. For this reason, even if a small amount of displacement occurs between the cylinder lock 1 and the dead case 4, the contact state is canceled and the detection rod 6 operates, so that high detection sensitivity is ensured.

  Further, as shown in FIG. 7, the detection rod 6 and the pressing protrusion 8 are accommodated in the cover portion 7 protruding from the dead case 4 in the assembled state of the steering lock device. Even after opening, it is possible to prevent the user from directly accessing the detection rod 6 and performing the work of restricting the movement of the detection rod 6.

  Further, the pressing protrusion 8 is formed in a narrow pin shape having a small cross-sectional area as compared with the base end portion thereof, and the base end portion of the pressing protrusion 8 and the cover portion 7 of the dead case 4 are superposed. Because of the close proximity and disposition, when a force is applied from the lower side to the upper side in FIG. 7 (a) due to an accident or the like during driving, the base end portion of the pressing projection 8 and the cover Bending into a downwardly convex V shape with the boundary with the portion 7 as a vertex, or the pressing projection 8 is sheared, and the vertical displacement between the dead case 4 and the cylinder lock 1 easily occurs.

  Even in such a case, since the support of the detection rod 6 is lost, the dead stopper 9 is activated and the dead bolt 3 is restrained at the unlock position during operation.

DESCRIPTION OF SYMBOLS 1 Cylinder lock 2 Frame 3 Dead bolt 4 Dead case 5 Spring 6 Detection rod 7 Cover part 8 Pressing protrusion 9 Dead stopper 10 Unlocking locking groove

Claims (6)

A frame in which the cylinder lock is inserted is translated between the lock position and the unlock position by the cylinder lock, and a dead case that holds a dead bolt that is locked to the steering shaft of the vehicle in the lock position is connected to the frame, and a spring. A steering lock device capable of detecting the separation between the dead case and the cylinder lock by the displacement of the detection rod that is urged by one end and presses against the cylinder lock;
The cylinder lock and the dead case are formed of a metal material, and the frame is formed of a synthetic resin material.
The moving path of the detection rod is a cylinder lock or a steering lock device that is covered over the entire length by a dead case. A cover portion that covers the facing surface of the detection rod to the inner wall of the frame protrudes from the dead case,
2. The steering lock device according to claim 1, wherein the cylinder lock is provided with a pressing protrusion that pushes a pressure contact boundary with the detection rod into an enclosure region by the cover portion when the cylinder lock is attached to the frame.   The base end of the pressing protrusion and the free end of the cover part are arranged in a non-overlapping manner in a side view, and the cover part opens in the center direction of the cylinder lock so that the pressing protrusion moves in the central axis direction. The steering lock device according to claim 2, wherein the steering lock device is formed in an allowable C-shaped cross section. The detection rod is formed in a plate shape and is movable using the cover portion as a guide,
The steering lock device according to claim 2, wherein the pressing protrusion is formed in a thin pin shape and presses the tip end surface of the detection rod as a pressed portion. The dead case is movable between a dead regulation position that is locked to the dead bolt and holds the dead bolt in a locked position, and a dead regulation release position that is unlocked from the dead bolt. It has a dead stopper urged to the position side,
The detection rod is movable between a stopper locking position where the dead stopper is locked to hold the dead stopper at a dead regulation releasing position, and a stopper locking releasing position where the locking with the dead stopper is released. The steering lock device according to any one of claims 1 to 4, wherein the steering lock device is urged toward a stopper locking release position and incorporated into a dead case.   The steering lock device according to claim 5, wherein the dead bolt is provided with an unlocking locking groove for locking the dead stopper at the unlocking position in addition to the locking position.

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