JP4507177B2 - Steering lock device - Google Patents

Description

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

  Conventionally, in the case of a steering lock device that releases the steering lock by the electronic authentication function between the portable device and the receiver, such as a smart entry system, the steering lock is used in the electronic authentication function when the portable device or the receiver fails. There was a problem that could not be released.

  In order to solve this problem, a steering lock device such as the following Patent Document 1 that enables steering lock release by a mechanical key in addition to steering lock release by an electronic authentication function has been developed. In this steering lock device, a housing having a lock groove that engages with a tumbler protruding from a key cylinder is provided on the outer periphery of the key cylinder. When the electronic authentication function is used, the housing is allowed to rotate and the tumbler is The steering lock is released when the key cylinder and the housing are integrally rotated while being engaged with the lock groove. On the other hand, in the case of unlocking with a mechanical key due to a failure of the electronic authentication function, the housing cannot be rotated, but the tumbler is inserted into the key cylinder by inserting the mechanical key into the key hole of the key cylinder. Since the engagement with the lock groove is released by retracting, the steering lock can be released by rotating the key cylinder alone in the non-rotatable housing.

  In the steering lock device disclosed in Patent Document 1, in order to prevent deformation of the tumbler, the slider disposed in the hole formed in the key cylinder and the slider disposed in the hole formed in the housing and in contact with the slider. When a possible pin and a spring that presses the pin radially inward are provided, and the key is not inserted into the key cylinder, the tumbler and the pin connect the housing and the key cylinder, and separate the housing and the frame. When the key is inserted, the pin separates the housing and the key cylinder and connects the housing and the frame.

Patent No. 3029059

  However, in the configuration of Patent Document 1, when the movement position of the slider when the key is inserted changes due to wear of the slider and the key, the contact surface of the slider and the pin (in the present invention, lift block) and the housing (in the present invention, the sleeve) ) And the contact surface of the key cylinder do not coincide with each other, and the pin is caught between the housing and the key cylinder, so that the key cylinder cannot be rotated.

Accordingly, in order to solve the above problem as a problem, the steering lock device of the present invention includes a holder, a cylindrical sleeve rotatably disposed in the holder and having a lock groove formed on an inner peripheral surface, and the lock A cylindrical key cylinder having a plurality of tumblers projecting into the groove and allowing the tumbler to escape from the lock groove by insertion of a regular key and turn in the sleeve, and an engagement portion provided on the sleeve A lock means that engages with a lock position that prohibits rotation of the sleeve and an unlock position that permits the rotation; and at least one end surface of the key cylinder is inserted by inserting a regular key into the key cylinder. A slider disposed in a slide hole formed in the key cylinder so as to move to a key insertion position which is substantially the same surface position as the outer peripheral surface, and one end surface of the slider A lift block disposed in a slide hole formed in the sleeve and the holder so as to move to a position where the sleeve and the holder are connected by movement of the slider to the key insertion position. In the steering lock device provided, it is inclined toward the side surface facing the rotational direction in which the key cylinder can be rotated by inserting a regular key into the key cylinder from the tip of the lift block that contacts the slider , and the state at the time of normal key is not inserted is provided the inclined surface formed so as to reach the position of the sleeve side of the boundary surface from the tip of the lift block and at least the key cylinder and the sleeve to the lift block, said key The lift block inclined surface and the sleeve corresponding to the rotation direction of the cylinder Between the side wall of the ride hole is characterized in that a gap portion.

According to this configuration, the movement position of the slider changes due to wear of the slider and the regular key, etc., and when the regular key is inserted, the one end surface of the slider is located on the inner side of the outer peripheral surface of the key cylinder, and the lift comes into contact with the slider. Even if the tip of the block is located in the slide hole of the key cylinder, the tilting surface of the lift block abuts against the opening end of the slide hole when the key cylinder rotates, so that the lift block escapes from the slide hole. To do. For this reason, the malfunction that a lift block is hooked in the slide hole of a key cylinder and a key cylinder does not rotate can be prevented .

Also, it is not necessary to form one end surface of the slider so that it completely coincides with the outer peripheral surface of the key cylinder when the regular key is inserted, and the slider can be formed with a certain degree of error. It becomes possible.

In addition, when the regular key is removed from the key cylinder, the slide holes of the key cylinder and sleeve will be misaligned, and even if there is a step in the slide hole due to the misalignment, there will be a gap between the lift block and the slide hole. The lift block does not interfere with the step due to the gap portion formed in the bottom. Therefore, the lift block can surely move to a predetermined position, and the occurrence of malfunction can be prevented.

  In the steering lock device of the present invention, an engagement recess that engages with the slider may be provided in the sleeve, and a spring that urges the slider toward the engagement recess may be provided.

  According to this configuration, since the key cylinder and the sleeve can be connected by the slider, even if the key cylinder is rotated by a strong force, the load on the tumbler can be reduced and deformation of the tumbler can be prevented. .

  In the steering lock device according to the present invention, the slider may be formed so that the other end of the slider is located inside the outer peripheral surface of the key cylinder at the key insertion position.

  According to this configuration, even if the key cylinder and the sleeve are locked by the slider, a change in the moving position of the slider due to wear of the slider and the key or the like can be allowed to prevent malfunction.

  In the steering lock device of the present invention, when the key cylinder is rotated, the slider and the side wall of the engagement recess are engaged before the tumbler and the side wall of the lock groove are engaged. Good.

  According to this configuration, even if a strong rotational force is applied to the key cylinder when the regular key is not inserted, a rotational load is not applied to the tumbler, so that the deformation of the tumbler can be prevented more reliably.

  As described above, in the steering lock device of the present invention, even if the slider moving position changes due to the wear of the slider and the regular key, no malfunction occurs.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an overall configuration of a steering lock device 1 according to an embodiment of the present invention. In FIG. 1, the right side is called “front” and the left side is called “rear”.

  The steering lock device 1 includes a steering lock body 2 that is integrally formed of a metal material such as zinc or aluminum. A substantially cylindrical holder 3 is accommodated and fixed at the front end of the steering lock body 2. A cylindrical sleeve 4 is rotatably accommodated in the steering lock body 2 and behind the holder 3. A convex portion 4 a is formed on the outer peripheral surface of the rear end of the sleeve 4, and the convex portion 4 a is formed between a sliding groove 3 a formed in a predetermined range on the inner peripheral surface of the rear end of the holder 3 and the body 2. By being held, the sleeve 4 can be rotated within a predetermined range, but is held immovable in the front-rear direction. In addition, two lock grooves 5 and 6 extending in the longitudinal direction are formed at opposing positions on the inner peripheral surface of the sleeve 4.

  A cylindrical key cylinder 7 is accommodated in the holder 3 and the sleeve 4 so as to be movable and rotatable in the axial direction. A plurality (eight in this embodiment) of plate-shaped tumblers 8 are arranged in the key cylinder 7 in an aligned state. These tumblers 8 are normally in a state where their end portions protrude from the outer peripheral surface of the key cylinder 7 by an urging force of a spring (not shown) and enter into the lock grooves 5 and 6 of the sleeve 4. On the other hand, when a regular mechanical key (hereinafter referred to as “regular key”) is inserted into a key hole 9 (shown in FIG. 7) drilled from the front end surface to the rear end along the rotation axis of the key cylinder 7, The end is retracted from the outer peripheral surface of the key cylinder 7 by moving into the key cylinder 7 against the biasing force of the spring. Further, a restriction convex portion 7a is provided on the front side surface of the key cylinder 7 in the radial direction, and when the key cylinder 7 is at the front position shown in FIG. 1, a restriction concave portion formed on the inner peripheral surface of the holder 3. Engagement is restricted by 3b and it is in the state which cannot be rotated. Then, when the key cylinder 7 is pushed into the rear position shown in FIG. 5, the engagement between the restricting convex portion 7 a and the restricting concave portion 3 b is released, and the key cylinder 7 becomes rotatable with respect to the holder 3.

  A slider 10 is disposed behind the tumbler 8 of the key cylinder 7 so as to be slidable in a direction orthogonal to the axial direction of the key cylinder 7. As shown in FIG. 2, the slider 10 is provided so as to be linearly connected to the radial direction of the holder 3, the sleeve 4, and the key cylinder 7 from the lower end of the steering lock body 2 in the figure. It is disposed in a slide hole 18 that extends to the upper lock groove 5. In addition, one end surface 11 of the slider 10 and the other end surface 12 on the lock groove 5 side have arc shapes that are flush with the outer peripheral surface of the key cylinder 7. Further, a spring 16 is engaged with a spring engaging portion 13 formed on the side surface of the slider 10 and is urged upward in the figure by the spring 16, and the other end side enters the lock groove 5 of the sleeve 4. ing. The slider 10 has a key insertion hole 14 for inserting a regular key, and a step portion 14a formed in the key insertion hole 14.

  This key insertion hole 14 is at a position deviated from the key hole 9 of the key cylinder 7 when the regular key is not inserted. When the regular key is inserted, as shown in FIG. Moving. At that time, the slider 10 is configured such that the one end surface 11 is positioned so as to be flush with the outer peripheral surface of the key cylinder 7 and the other end surface 12 is positioned inside the outer peripheral surface of the key cylinder 7. Yes.

  Further, in the state where the regular key is not inserted (FIG. 2), the gap between the slider 10 and the side wall 5a of the lock groove 5 which is the engaging recess is configured to be smaller than the gap between the tumbler 8 and the side walls of the lock grooves 5 and 6. The slider 10 engages with the side wall 5a of the lock groove 5 before the tumbler 8 engages with the lock grooves 5 and 6 when a rotational force is applied to the key cylinder 7 when the regular key is not inserted. is doing. In this way, when the key cylinder 7 is forcibly rotated, no load is applied to the tumbler 8, so that deformation of the tumbler 8 can be reliably prevented. In the present embodiment, the thickness of the slider 10 is larger than the thickness of the tumbler 8, and the key cylinder 7 and the sleeve 4 are connected with high strength.

  In this embodiment, the lock groove 5 is an engagement recess, but an engagement recess may be provided separately from the lock groove 5.

  A lift block 20 is provided in contact with one end of the slider 10. The lift block 20 is disposed in the slide hole 18 so as to be slidable in a direction orthogonal to the axial direction of the sleeve 4 and is urged toward the slider 10 by a key detection switch 23 described later. On the tip side of the lift block 20 that contacts the slider 10, a pair of inclined surfaces 21 that are inclined from the vicinity of the center of the tip to the side surface are provided on both the left and right sides corresponding to the rotational direction of the key cylinder 7. The rear end of the inclined surface 21 is configured to be positioned closer to the sleeve 4 than the boundary surface between the key cylinder 7 and the sleeve 4 in the state shown in FIG. A gap 22 is formed between the side wall and the side wall. The rear end side of the lift block 20 is configured to be flush with the outer peripheral surface of the sleeve 4 when the regular key is not inserted.

  A detection pin 24 of a key detection switch 23 attached to the lower portion of the steering lock body 2 protrudes from the lower end of the slide hole 18. The detection pin 24 is urged toward the key cylinder 7 by a spring (not shown), and the tip is in contact with the rear end of the lift block 20. When the regular key is inserted into the key hole 9 of the key cylinder 7, the detection pin 24 is pressed by the movement of the slider 10 and the lift block 20 described above, whereby a contact portion (not shown) is conducted and turned on. Thereby, the insertion of the key is detected.

  Further, as shown in FIG. 1, an expansion hole 18 a communicates with the front side so that the lift block 20 does not interfere when the key cylinder 7 is operated to the rear side, as shown in FIG. 1. Is provided.

  Referring again to FIG. 1, an actuator 30 is attached to the upper portion of the front end portion of the steering lock body 2. The actuator 30 has a lock bar (locking means) 31 at its tip. The lock bar 31 is normally engaged with a concave engaging portion 4a formed on the outer peripheral surface of the sleeve 4 at a protruding lock position, and thereby the rotation of the sleeve 4 is prohibited. On the other hand, the lock bar 31 is retracted in accordance with a control signal from the controller 52 to be described later to enter the unlock position, whereby the engagement with the engagement portion 4a on the outer peripheral surface of the sleeve 4 is released, and the sleeve 4 is rotated. Is allowed.

  A knob 32 for rotating the key cylinder 7 is fixed to the front end portion of the key cylinder 7. On the other hand, a camshaft 34 is connected to the rear end portion of the key cylinder 7. A spring 33 is disposed between the key cylinder 7 and the camshaft 34 to urge the key cylinder 7 forward. A cam 35 is formed integrally with the cam shaft 34. Below the cam 35, an operating portion 38 urged toward the front side in FIG. 1 by a lock spring (not shown) is slidably disposed. A lock bolt 39 is connected to the operating portion 38, and when the key cylinder 7 is in the LOCK position, the tip of the lock bolt 39 engages with a recess of a steering shaft (not shown) so that the steering is locked. is there. The rear end of the camshaft 34 is connected to the ignition switch 40.

  The steering lock device 1 of the present embodiment is also electrically connected to and received by the portable device 50 that transmits a signal, the reception unit 51 that receives the signal, and the reception unit 51 in order to execute the electronic authentication function. And a controller 52 for receiving a signal from the means 51 and outputting a control signal. In order to transmit and receive control signals, the controller 52 is electrically connected to the actuator 30 and a push detection switch 53 (not shown mechanically) provided in the steering lock device 1 to detect the push of the key cylinder 7. It is connected.

  As shown in FIGS. 6A and 6B, the regular key 60 includes a plate-like key plate 64 formed of a metal member and a gripping portion 62 formed of a resin material. . An inclined portion 65 is formed at the tip of the key plate 64. Further, predetermined key grooves 66 corresponding to the respective tumblers 8 are formed on both side surfaces of the key plate 64 in the width direction. Further, positioning step portions 67 extending linearly in the axial direction of the key plate 64 are formed on both side surfaces of the key plate 64 in the thickness direction. When the regular key 60 is inserted into the key hole 9 of the key cylinder 7, the step portion 14 a of the key insertion hole 14 of the slider 10 abuts on the inclined portion 65 of the key plate 64 and moves along the inclined portion 65. Finally, the positioning step 67 comes into contact with the step 14a of the slider 10, whereby the slider 10 is held at the predetermined position described above. As described above, the slider 10 is held at a predetermined position by the positioning step portion 67 on the side surface of the key plate 64 instead of the key groove 66 that is easily rubbed against the plurality of tumblers 8. Therefore, it is possible to prevent the movement position of the slider 10 from changing.

  Next, the operation of the steering lock device 1 having the above configuration will be described. First, in the locked state shown in FIG. 1, the actuator 30 is in an off state, and the lock bar 31 protrudes into the engaging portion 4 a of the sleeve 4 to prevent the sleeve 4 from rotating. Further, the regular key 60 is not inserted into the key hole 9 of the key cylinder 7, and the end of the slider 10 protrudes into the lock groove 5 of the sleeve 4 as shown in FIG. 2. The key cylinder 7 cannot be rotated with respect to the sleeve 4. The tumbler 8 also protrudes from the side wall of the key cylinder 7 and protrudes into the lock grooves 5 and 6 of the sleeve 4.

  In this state, even if a strong rotational force is applied to the key cylinder 7 for the purpose of unauthorized unlocking, the restricting convex portion 7a of the key cylinder 7 is engaged with and held by the restricting concave portion 3b of the holder 3. It is not rotated. Even if the key cylinder 7 is pushed in and the engagement between the restriction convex portion 7a and the restriction concave portion 3b is released, the key cylinder 7 and the sleeve 4 are connected by the slider 10, so that a load is applied to the tumbler 8. The deformation of the tumbler 8 can be prevented without this. Furthermore, providing the slider 10 on the rear side of the tumbler 8 of the key cylinder 7 makes it difficult to insert a tool driver or the like into the key hole 9 to operate the slider 10 illegally.

Next, the unlocking operation of the steering lock device 1 using the portable device 50 will be described.
The portable device 50 transmits a signal when the user holding it approaches a predetermined distance range of the receiving means 51 or presses a switch of the portable device 50. The receiving means 51 that has received the signal transmitted from the portable device 50 outputs the signal to the controller 52. The controller 52 that has received the signal from the receiving means 51 performs electronic authentication and confirms the coincidence with the registered data, and then outputs a control signal to a door lock mechanism (not shown) to release the door lock. At the same time, the controller 52 can unlock the steering lock device 1.

  A user who opens the door and gets into the vehicle presses the knob 32. As a result, the key cylinder 7 moves rearward while the spring 33 is compressed, and the push-in detection switch 53 is turned on. This ON signal is transmitted to the controller 52. At this time, if the controller 52 is in an unlockable state in which electronic authentication is approved, a control signal is output to the actuator 30. In response to this, the actuator 30 retracts the lock bar 31 from the locked position in which the lock bar 31 protrudes into the engaging portion 4a of the sleeve 4 to the actuator 30 side to the unlocked position where the engagement with the sleeve 4 is released. Operate. Thereby, the sleeve 4 becomes a rotatable state shown in FIG.

  Further, by the movement of the key cylinder 7 to the rear position, the engagement between the restriction convex portion 7 a of the key cylinder 7 and the restriction concave portion 3 b of the holder 3 is released, and the key cylinder 7 can be rotated with respect to the holder 3. At this time, as shown in FIG. 5, even if the slider 10 and the lift block 20 are displaced in the axial direction of the key cylinder 7, the slider 10 is widened so that the contact state can be maintained. In addition, the expansion hole 18 a is provided so that the lift block 20 does not interfere with the movement of the key cylinder 7. For this reason, even if the key cylinder 7 is operated to the rear position, the key cylinder 7 and the sleeve 4 are connected by the slider 10.

  When the user rotates the knob 32 from the LOCK position to the START position in a predetermined direction (clockwise direction in FIG. 2), the key cylinder 7 connected to the knob 32 is moved to the slider as shown in FIG. It rotates together with the sleeve 4 connected by 10.

  As the key cylinder 7 rotates, the cam shaft 34 also rotates, and the cam 35 pushes down the operating portion 38. As a result, the upper end portion of the lock bolt 39 fixed to the operating portion 38 is released from the recess of the steering shaft, and the steering lock is released. Further, the ignition switch 40 is driven by the rotation of the camshaft 34 to start the engine.

  Next, a steering lock release operation when the electronic authentication function is disabled due to, for example, the portable device 50 or the receiving unit 51 will be described. Since the electronic authentication function is disabled, the actuator 30 is not driven and the lock bar 31 remains in the locked position engaged with the engaging portion 4a of the sleeve 4. Thereby, the rotation of the sleeve 4 is prohibited.

  In this case, the user unlocks the door lock of the vehicle door with the regular key 60, inserts the regular key 60 into the key hole 9 of the key cylinder 7, and pushes the key cylinder 7. Then, all of the tumblers 8 are retracted inside the key cylinder 7 and the connection state with the lock grooves 5 and 6 is released. Further, as shown in FIG. 4A, the slider 10 is also retracted inside the key cylinder 7 to be disengaged from the lock groove 5, and the key cylinder 7 can be rotated independently. At this time, the one end surface 11 of the slider 10 with which the lift block 20 abuts moves to a key insertion position that is flush with the outer peripheral surface of the key cylinder 7, and thereby the lift block 20 straddles the sleeve 4 and the holder 3. Moving. As a result, the detection pin 24 of the key detection switch 23 is moved into the switch and turned on, and the insertion of the key is detected.

  Further, by the movement of the key cylinder 7 to the rear position, the engagement between the restriction convex portion 7 a of the key cylinder 7 and the restriction concave portion 3 b of the holder 3 is released, and the key cylinder 7 can be rotated with respect to the holder 3. At this time, the slider 10 and the lift block 20 are displaced in the axial direction of the key cylinder 7, but the contact between the slider 10 and the lift block 20 is the same as in the unlocking operation using the portable device 50. The contact state is maintained, and the state of the slider 10 and the lift block 20 described above is maintained.

  In this state, when the regular key 60 is turned in a predetermined direction (clockwise in FIG. 4), as shown in FIG. 4B, the key cylinder 7 is rotated and the camshaft 34 is also rotated together. Thus, the steering lock is released as described above.

  By the way, during the unlocking operation by the regular key 60, the slider 10 has the key insertion position shown in FIG. 4A, that is, the slider due to wear of the key insertion hole 14 and the regular key 60 of the slider 10, dimensional error of the slider 10, and the like. In some cases, the one end surface 11 of the slider 10 does not move to a position coincident with the outer peripheral surface of the key cylinder 7, and the one end surface 11 of the slider 10 moves only slightly inside the outer peripheral surface of the key cylinder 7.

  However, in the steering lock device 1 of the present embodiment, in a state where the regular key 60 is inserted, the other end surface 12 of the slider 10 is positioned on the inner side of the outer peripheral surface of the key cylinder 7, so The moving error can be absorbed. Therefore, even if the slider 10 does not accurately move to the predetermined position, the other end surface 12 of the slider 10 escapes from the lock groove 5 of the sleeve 4 and the connection between the key cylinder 7 and the sleeve 4 is released.

  An inclined surface 21 is provided on the side of the lift block 20 that contacts the slider 10. As a result, the one end surface 11 of the slider 10 moves only to the inside of the outer peripheral surface of the key cylinder 7 for the above reason, and the tip of the lift block 20 protrudes into the slide hole 18 in the key cylinder 7 portion. In addition, when the key cylinder 7 is rotated, the inclined surface 21 of the lift block 20 contacts the edge portion of the slide hole 18, and the lift block 20 moves toward the key detection switch 23 along the inclined surface 21. For this reason, the one end side of the lift block 20 is caught in the slide hole 18 of the key cylinder 7, and the malfunction that the key cylinder 7 becomes unable to rotate can be prevented.

  4A, the slide hole 18 in the key cylinder 7 portion and the slide hole 18 in the sleeve 4 portion are displaced due to the gap between the slider 10 and the side wall 5a of the lock groove 5. In the state shown in FIG. Sometimes. In this case, conventionally, when the regular key 60 is extracted from the key cylinder 7, the side end of the lift block 20 is caught by the step formed by the slide hole 18 being displaced, and the lift block 20 moves to a predetermined position. There was a case not to.

  In the steering lock device 1 of the present embodiment, the rear end of the inclined surface 21 of the lift block 20 is on the sleeve 4 side of the boundary surface between the key cylinder 7 and the sleeve 4 in the state of FIG. The gap portion 22 is formed at the position. As a result, the side surface of the lift block 20 (the rear end of the inclined surface 21) is not caught by the step formed by the slide hole 18 being displaced. Therefore, even if the regular key 60 is removed, the problem that the lift block 20 does not move and the key detection switch 23 is not turned off can be prevented.

  By the way, although the electronic authentication function is effective, the user may misunderstand that the electronic authentication function has failed, and the steering lock may be released with the regular key 60. At this time, the key cylinder 7 is rotated by the regular key 60 in a state where the actuator 30 is operated by the electronic authentication function and the sleeve 4 can be rotated. However, since the lift block 20 is moved by the insertion of the regular key 60 and the sleeve 4 and the holder 3 are connected, unnecessary rotation of the sleeve 4 can be prevented.

  In this embodiment, the symmetrically inclined surface 21 is provided on one end side of the lift block 20. However, the present invention is not limited to this, and as shown in FIG. May be arcuate, and the inclined surface 21 may be curved. Moreover, as shown in FIG.8 (b), the lift block 20 may be comprised in a substantially reverse T shape, the clearance gap part 22 may be formed, and the inclined surface 21 may be provided in the front end side.

  Further, when the key cylinder 7 can be rotated only in the clockwise direction in FIG. 4A by inserting the regular key into the key cylinder 7 as in the present embodiment, the rotation direction of the key cylinder 7 is opposed. The inclined surface 21 may be provided only on the right side in FIG.

It is side surface sectional drawing which shows the steering lock apparatus of one Embodiment of this invention. It is AA sectional drawing of FIG. FIG. 3 is a cross-sectional view showing a state where a key cylinder is rotated in FIG. 2. 2A is a sectional view showing a state in which a regular key is inserted into the key cylinder, and FIG. 2B is a sectional view showing a state in which the key cylinder is rotated by the regular key. It is side surface sectional drawing which shows the state by which the key cylinder was pushed in FIG. (A) is a top view of a regular key, (b) is a BB cross-sectional enlarged view of (a). It is a front view showing a steering lock device of one embodiment of the present invention. (A), (b) is sectional drawing which shows the modification of the lift block of FIG.

Explanation of symbols

  Holder 3, sleeve 4, engaging portion 4 a, lock groove 5, 6, key cylinder 7, tumbler 8, slider 10, one end surface 11, slide hole 18, lift block 20, tilt Surface 21, lock bar (locking means) 31, regular key 60.

Claims (4)

A holder, a cylindrical sleeve rotatably disposed in the holder and having a lock groove formed on the inner peripheral surface, and a plurality of tumblers protruding into the lock groove. A cylindrical key cylinder that can be rotated within the sleeve after the tumbler has escaped, and a lock position that engages with an engaging portion provided in the sleeve and prohibits the rotation of the sleeve, and the rotation. Locking means that operates to an unlocking position to be permitted, and the key cylinder so that at least one end surface is moved to a key insertion position that is substantially the same surface position as the outer peripheral surface of the key cylinder by inserting a regular key into the key cylinder. A slider disposed in a slide hole formed in the slider, and the sleeve and the holder by abutting against one end surface of the slider and moving the slider to the key insertion position In a steering lock device including a lift block disposed in a slide hole formed in the sleeve and the holder so as to move to a position to connect the key, the key from the tip of the lift block that contacts the slider The key cylinder is inclined toward the side surface opposite to the rotation direction in which the key cylinder can be rotated by inserting the regular key into the cylinder , and at least the key cylinder and the key cylinder from the tip of the lift block in a state when the regular key is not inserted. An inclined surface formed so as to reach a position closer to the sleeve side than a boundary surface with the sleeve is provided in the lift block, and the inclined surface of the lift block corresponding to the rotation direction of the key cylinder and the slide hole of the sleeve are provided. A steering lock device characterized in that a gap is provided between the side wall and the side wall . 2. The steering lock device according to claim 1, wherein an engagement recess for engaging with the slider is provided in the sleeve, and a spring for biasing the slider toward the engagement recess is provided. The steering lock device according to claim 2, wherein the slider is formed so that the other end of the slider is located inside the outer peripheral surface of the key cylinder at the key insertion position. 4. The slider according to claim 3, wherein when the key cylinder is rotated, the slider and the side wall of the engagement recess are engaged before the tumbler and the side wall of the lock groove are engaged. The steering lock device as described.

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