JP6367679B2 - Electric steering lock device - Google Patents

Description

  The present invention relates to an electric steering lock device that locks the rotation of a steering wheel when a vehicle is parked.

  2. Description of the Related Art Conventionally, there has been an electric steering lock device that locks the steering of a vehicle and prevents theft by engaging a lock bolt that is operated by the driving force of an electric motor with an engagement recess provided on a steering shaft. Are known.

Patent Document 1 describes a configuration in which a lock bolt is operated using a screw mechanism.
In such an electric steering lock device, when torque is applied to the steering shaft in a state where the lock bolt is engaged with the steering shaft, a stationary torque is applied to the lock bolt, and the inner side surface of the engaging recess is pressed against the lock bolt. Because of this state, the lock bolt may not be pulled out from the engaging recess.

  As a countermeasure, in order to increase the pulling force of the lock bolt, a method of reducing the screw pitch of the screw mechanism can be considered, but in this case, it takes time to pull out the lock bolt. As a result, there is a possibility that it takes time until the vehicle starts to travel.

JP 2003-276565 A

  An object of the present invention is to provide an electric steering lock device that can increase the pull-out force of the lock bolt and shorten the lock bolt pull-out time.

  The present invention solves the above problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this.

  According to the first aspect of the present invention, the lock member (31, 32) movable between the lock position for engaging with the steering shaft and the unlock position for releasing the engagement, and the drive of the electric motor (61). A rotating member (40) that can be rotated forward and backward by force, the locking member, and a male screw part (32a) on one side of the rotating member and a female screw part (40b) on the other side, The screw member that moves the lock member toward the lock position or the unlock position according to the rotation of the lock member, and the male screw portion and the female screw portion of the screw mechanism are engaged when the lock member is unlocked. And a cam mechanism (32h, 40d) that continuously operates the lock member in the unlock position direction at an operation pitch longer than the operation pitch of the screw mechanism. Is a device (1).

  According to a second aspect of the present invention, in the electric steering lock device according to the first aspect, the cam mechanism includes an original joint (40d) provided on the rotating member (40) side, and the lock members (31, 32). A cam follower (32h) provided on the side, wherein the locking member is in a locked position, and when the male screw portion (32a) and the female screw portion (40b) of the screw mechanism are engaged with each other, the cam mechanism The original joint and the follower are displaced in the operation direction of the lock member and are in a position where they cannot be engaged in the rotation direction of the rotation member, and the lock member moves in the unlock position direction and the screw mechanism is engaged. The electric steering lock device (1) is characterized in that the original joint and the follower of the cam mechanism are arranged so as to be engageable in the rotational direction of the rotating member when the cam mechanism is disengaged.

  The invention of claim 3 is the electric steering lock device according to claim 1 or 2, further comprising a spring (51) for urging the lock member (31, 32) toward the lock position. This is an electric steering lock device (1).

  According to a fourth aspect of the present invention, in the electric steering lock device according to the second or third aspect, the rotating member (40) includes an internal thread portion (40b) of the screw mechanism on the inner peripheral surface, and the cam. It is a cylindrical member in which the original section (40d) of the mechanism is formed, and the lock members (31, 32) are inserted into the rotating member, and the male screw portion (32a) of the screw mechanism is inserted into the outer peripheral surface. And a substantially rod-like member provided with a follower (32h) of the cam mechanism, wherein the lock member is in an unlocked position, and the original and follower of the cam mechanism are related to the rotation direction of the rotating member. In the electric steering lock device (1), the male screw portion and the female screw portion of the screw mechanism are provided so as to be shifted in the advancing / retreating direction of the lock member when the screw mechanism is in a position to be matched.

  According to the present invention, the electric steering lock device can increase the pull-out force of the lock bolt and shorten the lock bolt pull-out time.

1 is an exploded perspective view showing an embodiment of an electric steering lock device 1 according to the present invention. 2 is a longitudinal sectional view showing a locked state of the electric steering lock device 1. FIG. 2 is a longitudinal sectional view showing an unlocked state of the electric steering lock device 1. FIG. 4 is a perspective view showing a rotating member 40. FIG. FIG. 4 is a diagram showing a relationship between a lock bolt 31 and a slider 32 in a locked state and a rotating member 40. FIG. 6 is a diagram showing a relationship between a lock bolt 31 and a slider 32 and a rotating member 40 during the transition from the locked state to the unlocked state of FIG. 5. FIG. 6 is a diagram illustrating a relationship between a rotation member 40 and a lock bolt 31 and a slider 32 in an unlocked state shifted from the locked state in FIG. 5. FIG. 4 is a diagram showing a relationship between a lock bolt 31 and a slider 32 in an unlocked state, and a rotating member 40. FIG. 9 is a diagram illustrating a relationship between a lock bolt 31 and a slider 32 and a rotating member 40 during the transition from the unlocked state to the locked state in FIG. 8. FIG. 9 is a diagram illustrating a relationship between a lock bolt 31 and a slider 32 and a rotating member 40 in a locked state shifted from the unlocked state in FIG. 8.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

(Embodiment)
FIG. 1 is an exploded perspective view showing an embodiment of an electric steering lock device 1 according to the present invention.
FIG. 2 is a longitudinal sectional view showing a locked state of the electric steering lock device 1.
FIG. 3 is a longitudinal sectional view showing the unlocked state of the electric steering lock device 1.
FIG. 4 is a perspective view showing the rotating member 40.
In addition, each figure shown below including FIG. 1 is the figure shown typically, and the magnitude | size and shape of each part are exaggerated suitably for easy understanding.
In the following description, specific numerical values, shapes, materials, and the like are shown and described, but these can be changed as appropriate.
Further, in the following description, unless otherwise specified, the description indicating the direction such as up and down refers to the direction in FIGS. 1 to 3.

  The electric steering lock device 1 according to the present invention locks / unlocks the rotation of a steering shaft (steering wheel) (not shown) by electric drive. The electric steering lock device 1 includes a housing 10 made of a non-magnetic metal (for example, a magnesium alloy) and a metal cover 20 that covers a lower surface opening of the housing 10 as an exterior.

  The housing 10 is formed in a rectangular box shape, and an arcuate recess 10a is formed in the upper portion thereof. A column tube (not shown) is fitted into the recess 10 a, and the column tube is fixed to the housing 10 by an arcuate bracket (not shown) attached to the housing 10. Although not shown, a steering shaft is inserted into the column tube, and a steering wheel is attached to one end of the steering shaft. The other end of the steering shaft is connected to a steering gear box. When the driver rotates the steering wheel, the rotation is transmitted to the steering gear box via the steering shaft, the steering mechanism is driven, and the pair of left and right front wheels are steered to perform the required steering. .

  In addition, a rectangular connector arrangement portion 10 b is opened at the side portion of the housing 10. Further, a circular pin hole 10 c into which the pin 11 is press-fitted is formed on the side portion of the housing 10.

  The cover 20 is formed in a rectangular flat plate shape, and three block-shaped pinning portions 21 (only one is shown in FIG. 1) and a bottomed cylindrical gear holding portion 22 are formed on the inner surface (upper surface). It is erected integrally. Here, the three pin fastening portions 21 are formed at locations corresponding to the positions of the pin holes 10c of the housing 10, and the circular pin insertion holes 21a (FIG. 1) into which the pins 11 are press-fitted are formed. Is formed with only one).

  The cover 20 is fitted into the inner periphery of the lower end of the housing 10 so as to cover the lower surface opening of the housing 10 from below. The cover 20 is formed by press-fitting a pin 11 inserted into three pin holes 10 c formed in the side portion of the housing 10 into a pin insertion hole 21 a formed in the three pin fastening portions 21 erected on the cover 20. It is fixed to the housing 10.

  The housing 10 is formed with a lock member storage portion 10f and a substrate storage portion 10g, and a gear cover 60 is disposed between the lock member storage portion 10f and the substrate storage portion 10g. The gear cover 60 prevents grease applied to the worm gear 62 described later from scattering to the substrate 70 side.

  A lock unit (lock member) 30 is stored in the lock member storage portion 10f. The lock unit 30 is configured as follows so as to be movable between a lock position where the lock unit 30 is engaged with the steering shaft and an unlock position where the engagement is released. The lock unit 30 includes a slider 32 in which a male screw portion 32a is engraved on the outer periphery of the lower end portion, and a plate-like lock bolt 31 accommodated in the slider 32 so as to be movable up and down. Here, the lock bolt 31 is formed with a long hole 31a which is long in the vertical direction, and the lock bolt 31 is connected to the slider 32 by a pin 34 which is inserted through the long hole 31a in the lateral direction. Note that the pin 34 is inserted and held by press-fitting into a pin insertion hole 32b penetrating the slider 32 in the lateral direction.

  The lock bolt 31 is fitted in a rectangular lock bolt insertion hole 10d formed in the housing 10 so as to be vertically movable. The lock bolt 31 is always urged upward from the slider 32 by a spring 52 that is compressed between the lock bolt 31 and the partition wall 32 f of the slider 32. Normally, the lock bolt 31 moves up and down together with the slider 32 by engaging the lower portion of the long hole 31 a of the lock bolt 31 with the pin 34.

  In addition, an arm 32d extending horizontally in the drawing and an anti-rotation portion 32c are integrally formed on the outer periphery of the upper portion of the slider 32. The arm 32d is accommodated in the housing 10 so as to be movable up and down as the slider 32 moves. The rotation preventing portion 32 c engages with an engagement groove 10 e formed in the housing 10 and restricts the rotation of the slider 32. And the magnet accommodating part 32e whose cross-sectional shape is a rectangle is formed in the front-end | tip part of the arm 32d. In the magnet storage portion 32e, a quadrangular prism-shaped magnet 33 is stored by press-fitting.

  A cylindrical rotating member 40 is accommodated in a lock member accommodating portion 10f formed in the housing 10 so as to be rotatable forward and backward. The outer periphery of the small-diameter portion 42, which is the lower portion of the rotating member 40, is rotatably held by a gear holding portion 22 erected on the inner surface (upper surface) of the cover 20. And the worm wheel 40a is formed in the outer periphery of the small diameter part 42 of this rotation member 40, and the internal thread part 40b is formed in the inner periphery.

A lower portion of a slider 32 formed in a substantially rod shape is inserted into the rotating member 40, and a male screw portion 32 a formed on the outer periphery of the lower portion of the slider 32 is formed on the inner periphery of the rotating member 40. The female screw portion 40b can be engaged. The male screw portion 32a and the female screw portion 40b constitute a screw mechanism that moves the lock bolt 31 and the slider 32 (lock unit 30) toward the lock position or the unlock position according to the rotation of the rotary member 40. Has been.
A spring 51 is mounted between the cylindrical spring receiver 23 formed at the center of the gear holding portion 22 of the cover 20 and the partition wall 32 f of the slider 32. The lock unit 30 (slider 32 and lock bolt 31) is always urged upward by a spring 51.
Further, a non-meshing portion 32 g is provided above the male screw portion 32 a of the slider 32. Correspondingly, a non-meshing portion 40 c is provided below the female screw portion 40 b of the rotating member 40. Therefore, when the position of the slider 32 approaches the unlocking position below, the engagement between the male screw portion 32a and the female screw portion 40b is released from a predetermined position.

Furthermore, an original joint 40d that extends in an inclined manner in the advancing / retreating direction of the lock bolt 31 and the slider 32 is formed on the inner peripheral surface of the large-diameter portion 41 that is the upper portion of the rotating member 40 so as to partially protrude. Correspondingly, the outer surface of the slider 32 is formed with a locking bolt 31 and a follower 32h extending in a slanting direction in the forward / backward direction of the slider 32. In this embodiment, the original joint 40d and the follower 32h are provided at two positions substantially opposite to each other, and the male screw of the screw mechanism is used when the lock bolt 31 and the slider 32 (lock unit 30) are unlocked. After the engagement between the portion 32a and the female screw portion 40b is disengaged, the cam mechanism is configured to continuously operate the slider 32 and the lock bolt 31 in the unlock position direction at an operation pitch longer than the operation pitch of the screw mechanism. In this cam mechanism, when the lock bolt 31 and the slider 32 are in the lock position and the male screw portion 32a and the female screw portion 40b of the screw mechanism are engaged with each other, the original joint 40d and the follower 32h of the cam mechanism are locked with the lock bolt. 31 and the operation direction of the slider 32 are shifted, and the rotation member 40 is in a position where it cannot be engaged in the rotation direction. Further, when the lock bolt 31 and the slider 32 move in the unlock position direction and the screw mechanism is disengaged, the original joint 40d and the follower 32h of the cam mechanism can be engaged in the rotation direction of the rotating member 40. The position is determined and arranged.
Further, the operation pitch of the cam mechanism composed of the original joint 40d and the follower joint 32h is configured to be longer than the operation pitch of the screw mechanism composed of the male screw portion 32a and the female screw portion 40b.
A more detailed relationship between the screw mechanism and the cam mechanism will be described later.

  An electric motor 61 is stored in a horizontally placed state in a lock member storage portion 10 f formed in the housing 10. A small-diameter worm gear 62 is attached to the output shaft 61a of the electric motor 61 so as to rotate integrally with the output shaft 61a. The worm gear 62 is engaged with a worm wheel 40 a formed on the outer periphery of the rotating member 40. The worm gear 62 and the worm wheel 40 a constitute a drive mechanism that converts the rotational force of the output shaft 61 a of the electric motor 61 into the advance / retreat force of the lock unit 30.

  On the other hand, the substrate 70 is accommodated in the substrate accommodating portion 10 g formed in the housing 10 so that the inner surface thereof is parallel to the operation direction of the lock unit 30. Hall elements 72 and 73, which are magnetic sensors, are fixed at positions corresponding to the upper and lower lock positions and unlock positions of the inner surface of the substrate 70, with the substrate 70 as a base portion. The hall elements 72 and 73 and the magnet 33 constitute an operating position detection mechanism, and the position (lock position / unlock position) of the lock unit 30 is detected by the operating position detection mechanism. The board 70 is provided with a motor connection terminal 71 to which the electric motor 61 is connected and a connector 74.

Next, the operation of the electric steering lock device 1 of the present embodiment will be described while paying attention to the relationship between the screw mechanism and the cam mechanism.
First, the unlocking operation will be described with reference to FIGS.
FIG. 5 is a diagram illustrating the relationship between the lock bolt 31 and the slider 32 in the locked state, and the rotating member 40.
FIG. 6 is a diagram showing the relationship between the lock bolt 31 and the slider 32 and the rotating member 40 during the transition from the locked state to the unlocked state of FIG.
FIG. 7 is a view showing the relationship between the rotating member 40 and the lock bolt 31 and the slider 32 in the unlocked state shifted from the locked state of FIG.
In the drawings shown below including FIGS. 5 to 7, the original clause 40 d that cannot be seen originally is shown in order to explain the positional relationship with the follower 32 h.

  In the locked state shown in FIG. 5, the lock bolt 31 is engaged with the recess of the steering shaft, and the steering is in the locked state. At this time, the original joint 40d and the follower 32h of the cam mechanism are in a non-engagement state, and the male screw portion 32a and the female screw portion 40b of the screw mechanism are in mesh with each other.

  In order to shift from the locked state of FIG. 5 to the unlocked state, when the electric motor 61 is driven and the rotating member 40 rotates forward (the front side in the drawing rotates to the right), the male screw portion 32a of the screw mechanism and The lock bolt 31 and the slider 32 move in the unlocking direction (downward) by the action of the female screw portion 40b. In this state, since the lock bolt 31 and the slider 32 are driven by the screw mechanism, even if the lock bolt 31 is subjected to a stationary torque and the inner surface of the engagement recess is in pressure contact with the lock bolt 31, It is possible to pull out the lock bolt 31 with a strong force. At this time, the original position 40d and the follower position 32h of the cam mechanism are not relative to each other in the vertical direction, so that they do not engage or collide with each other.

  Further, when the rotating member 40 continues normal rotation, the vertical positions of the non-meshing portion 32g and the non-meshing portion 40c coincide with the female screw portion 40b and the male screw portion 32a, respectively (facing each other). Therefore, the engagement between the male screw portion 32a and the female screw portion 40b of the screw mechanism is released, and the idle state is established. At this time, the lock bolt 31 and the slider 32 are held at their idle positions (vertical positions) by the urging force of the spring 51. Thereafter, the original joint 40d and the follower 32h of the cam mechanism are engaged in the rotational direction of the rotating member 40 (see FIG. 6), and the lock bolt 31 and the slider 32 are continuously unlocked by the cam mechanism (downward in the figure). ) Move to.

  At this time, since the operation pitch of the cam mechanism is set longer than the operation pitch of the screw mechanism, the lock bolt 31 and the slider 32 move to the unlock position faster than the moving speed of the screw mechanism.

  When the lock bolt 31 and the slider 32 move to the unlock position, the control unit (not shown) detects the magnetic force of the magnet 33 by the hall element 73 and detects that the lock bolt 31 and the slider 32 have moved to the unlock position. Then, the driving of the electric motor is stopped and the locking operation is completed.

Next, the locking operation will be described with reference to FIGS.
FIG. 8 is a diagram illustrating the relationship between the lock bolt 31 and the slider 32 in the unlocked state, and the rotating member 40.
FIG. 9 is a diagram showing the relationship between the lock bolt 31 and the slider 32 and the rotating member 40 during the transition from the unlocked state to the locked state in FIG. 8.
FIG. 10 is a diagram illustrating a relationship between the lock bolt 31 and the slider 32 and the rotating member 40 in the locked state shifted from the unlocked state in FIG. 8.

  In the unlocked state of FIG. 8, the engagement between the lock bolt 31 and the recess of the steering shaft is released, and the steering is unlocked. At this time, the follower 32h and the original joint 40d of the cam mechanism are in an engaged state, and the male screw portion 32a and the female screw portion 40b of the screw mechanism are not engaged with each other, and the lock bolt 31 and the slider 32 are advanced and retracted. It is in a state of being shifted apart (up and down direction in the figure).

  In order to shift from the unlocked state of FIG. 8 to the locked state, when the electric motor 61 is driven and the rotating member 40 is reversely rotated (the front side in the drawing is rotated leftward), the lock bolt 31 is biased by the urging force of the spring 51. The slider 32 starts to move in the locking direction (upward in the drawing) according to the inclination of the follower 32h and the original joint 40d of the cam mechanism.

  As the rotating member 40 continues to reverse, the lock bolt 31 and the slider 32 move to the state shown in FIG. 9, and the engagement between the follower 32h of the cam mechanism and the original joint 40d is released. Then, the male screw portion 32a of the screw mechanism is pressed against the female screw portion 40b by the biasing force of the spring 51, and the engagement between the male screw portion 32a and the female screw portion 40b of the screw mechanism is started, and the lock bolt 31 and the slider 32 are started. Continues to move in the locking direction by the screw mechanism. At this time, the follower 32h and the original joint 40d of the cam mechanism are displaced in the vertical direction due to the movement of the lock bolt 31 and the slider 32 in the lock position direction, so that they are not engaged again.

  When the lock bolt 31 and the slider 32 move to the lock position shown in FIG. 10, the lock bolt 31 engages with the recess of the steering shaft, and the steering is locked. Further, the control unit detects the magnetic force of the magnet 33 by the hall element 72, detects that the lock bolt 31 and the slider 32 have moved to the lock position, stops the driving of the electric motor 61, and completes the lock operation. To do.

As described above, according to the present embodiment, the electric steering lock device 1 disengages the male screw portion 32a and the female screw portion 40b of the screw mechanism when the lock bolt 31 and the slider 32 are unlocked. After that, a cam mechanism is provided that continuously operates the lock bolt 31 and the slider 32 in the unlock position direction at an operation pitch longer than the operation pitch of the screw mechanism. Therefore, when the lock bolt 31 is pulled out from the steering shaft, the lock member can be pulled out with a strong force using the screw mechanism. After the pulling out, the engagement of the screw mechanism is released, and the cam mechanism continues for a short time. Thus, the lock bolt 31 and the slider 32 can be moved to the unlock position. That is, even when the stationary torque is related to the lock bolt 31, the lock bolt 31 can be pulled out. In addition, the entire pull-out time of the lock bolt 31 and the slider 32 can be shortened as compared with the conventional configuration in which all are operated by the screw mechanism.
In addition, since the time required for the unlocking operation can be shortened, it is possible to perform a setting of increasing the force for pulling out the lock bolt 31 by reducing the pitch of the screw mechanism.

In addition, since the electric steering lock device 1 is provided with the cam mechanism on the slider 32 and the rotating member 40, it can be easily configured without increasing the number of parts.
Furthermore, in the electric steering lock device 1, while the screw mechanism is engaged and operated, the original joint 40d and the follower 32h of the cam mechanism are not engaged in the rotation direction of the rotating member 40, and the cam Since the engagement of the screw mechanism is disengaged while the mechanism is engaged, the screw mechanism and the cam mechanism do not affect the other operation, and the lock bolt 31 and the slider 32 are moved. Can be operated.

Furthermore, since the electric steering lock device 1 is provided with a spring 51 that urges the lock bolt 31 and the slider 32 in the lock position direction, when the lock bolt 31 and the slider 32 are locked, the original mechanism of the cam mechanism is provided. After the engagement between the joint 40d and the follower 32h is released, the lock bolt 31 and the slider 32 are moved toward the lock position by the urging force of the spring 51, and the male screw portion 32a of the screw mechanism is changed to the female screw portion 40b. Since it is pressed, the male screw portion 32a and the female screw portion 40b can be reliably engaged with each other.
Further, when the lock bolt 31 and the slider 32 are unlocked, the lock bolt 31 and the slider 32 are held at a position where the screw mechanism is disengaged by the urging force of the spring 51 and is idled. The electric steering lock device 1 can be easily designed and manufactured because it is sufficient to set and arrange the cam mechanism so that the original joint 40d and the follower 32h are engaged with each other.

  The present invention is not limited to the embodiment described above, and various modifications and changes are possible, and these are also within the scope of the present invention. Therefore, the present invention is not limited by the embodiments described above.

DESCRIPTION OF SYMBOLS 1 Electric steering lock apparatus 10 Housing 10a Recess 10b Connector arrangement | positioning part 10c Pin hole 10d Lock bolt insertion hole 10e Engaging groove 10f Lock member accommodating part 10g Board | substrate accommodating part 11 Pin 20 Cover 21 Pin fastening part 21a Pin insertion hole 22 Gear holding Part 23 Spring receiver 30 Lock unit 31 Lock bolt 31a Long hole 32 Slider 32a Male thread part 32b Pin insertion hole 32c Non-rotating part 32d Arm 32e Magnet storage part 32f Partition 32g Non-meshing part 32h Follower 33 Magnet 34 Pin 40 Rotating member 40a Worm wheel 40b Female thread portion 40c Non-meshing portion 40d Original node 41 Large diameter portion 42 Small diameter portion 51 Spring 52 Spring 60 Gear cover 61 Electric motor 61a Output shaft 62 Worm gear 70 Substrate 71 Motor connection terminal 72 Hall element 73 Hall element 74 connector

Claims (4)

A lock member movable between a lock position for engaging with the steering shaft and an unlock position for releasing the engagement;
A rotating member that can rotate forward and backward by the driving force of the electric motor;
The lock member and the rotary member are provided with a male screw portion on one side and a female screw portion on the other side, and the lock member is directed to the lock position or the unlock position according to the rotation of the rotary member. A screw mechanism to be moved,
During the unlocking operation of the lock member, after the engagement between the male screw portion and the female screw portion of the screw mechanism is released, the lock member is continuously moved in the unlock position direction at an operation pitch longer than the operation pitch of the screw mechanism. A cam mechanism to be operated;
An electric steering lock device comprising: In the electric steering lock device according to claim 1,
The cam mechanism includes an original joint provided on the rotating member side, and a follower provided on the lock member side,
When the lock member is in the lock position and the male screw portion and the female screw portion of the screw mechanism are engaged with each other, the original joint and the follower of the cam mechanism are displaced in the operation direction of the lock member, and the rotation In a position where it cannot be engaged in the rotation direction of the member,
When the locking member moves in the unlocking position direction and the screw mechanism is disengaged, the original and follower of the cam mechanism are arranged so that they can be engaged in the rotation direction of the rotating member. That
An electric steering lock device. In the electric steering lock device according to claim 1 or 2,
Providing a spring for urging the lock member toward the lock position;
An electric steering lock device. In the electric steering lock device according to claim 2 or claim 3,
The rotating member is a cylindrical member in which an internal thread portion of the screw mechanism and an original thread of the cam mechanism are formed on an inner peripheral surface,
The lock member is a substantially rod-like member that is inserted into the rotating member and has an outer peripheral surface provided with a male screw portion of the screw mechanism and a follower of the cam mechanism,
When the lock member is in the unlock position and the original joint and follower of the cam mechanism are in positions where they are engaged in the rotational direction of the rotating member, the male screw part and the female screw part of the screw mechanism are Being provided shifted in the advancing and retracting direction of the locking member,
An electric steering lock device.

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