JP2016101820A - Steering lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steering lock device that is downsized, consumes less power and can reduce heat generation of a solenoid.SOLUTION: A steering lock device 1 comprises: a link 40 that inhibits rotation of a cam shaft 20 toward a LOCK position at a drawing position of a plunger 31, or restriction position, and permits rotation of the cam shaft 20 toward the LOCK position at a protruding position of the plunger 31, or a permission position; a slider 50 that transfers the link 40 to the restriction position and the permission position responding to the rotation of the cam shaft 20; a first spring 61 that energizes the slider 50 toward a direction in which the link 40 is transferred to the restriction position; and a second spring 62 that energizes the link 40 toward a direction in which the link 40 is transferred to the permission position. The slider 50 is moved by energizing force of the first spring 61 so as to transfer the link 40 to an inhibition position responding to rotation of the cam shaft 20 from the LOCK position toward an ON position.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a steering lock device that locks a key cylinder with a key lock mechanism so that the key cannot be removed.

  The steering lock device of an AT car has a key lock mechanism with a key when the shift lever is set to a reverse range “R” other than the parking range “P”, a neutral range “N”, or a drive range “D”. Some have a key interlock device that locks the cylinder so that the key cannot be removed.

  The key interlock device generally uses a solenoid. For example, when the shift lever is in a position other than “P”, the solenoid is energized to cause the plunger to protrude and engage the cam of the steering lock device. The key cannot be rotated to the “LOCK” position. Further, when the energization is released, it returns to the original immersion position by the spring force (see Patent Document 1).

  Due to the nature of such solenoids, continuous energization is required during operation (when the shift lever is in a position other than the “P” position), and the plunger must be driven against the biasing force of the spring. Therefore, a large driving force is required, and there is a possibility that the solenoid is enlarged, power consumption is increased, or the steering lock device and the key are heated due to heat generation of the solenoid.

Japanese Patent No. 3838630

  An object of the present invention is to provide a steering lock device that is small in size, has low power consumption, and can reduce heat generation of a solenoid.

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.
The invention according to claim 1 is a camshaft (20) having a cam portion (21) disposed in the housing (10) and rotating to a LOCK position, an ACC position, an ON position, and a START position in accordance with a key rotation operation. And a solenoid (30) that drives the plunger (31) to a protruding position and a retracted position, and the plunger (31) can be switched between a restricting position and an allowable position by driving the plunger (31), and the plunger (31) is retracted In the restriction position, which is the position, the camshaft (20) is prevented from rotating to the LOCK position, and in the allowable position where the plunger (31) is projected, the camshaft (20) is allowed to rotate to the LOCK position. Interlocking with the blocking member (40, 240), the cam portion (21) and the blocking member (40, 240), the camshaft (20) A cam interlocking member (50, 250) that causes the blocking member (40, 240) to transition between a restricting position and an allowable position according to rolling, and a direction in which the blocking member (40, 240) becomes the restricting position, The first springs (61, 261) for urging the cam interlocking members (50, 250) and the blocking members (40, 240) toward the direction in which the blocking members (40, 240) are allowed. A second spring (62, 262) for urging the cam interlocking member (50, 250), wherein the cam shaft (20) rotates in response to rotation of the cam shaft (20) from the LOCK position toward the ON position. The steering lock device (1, 2) is moved by the urging force of the first spring (61) in conjunction with the portion (21) to shift the blocking member (40, 240) to the blocking position.

  According to a second aspect of the present invention, in the steering lock device according to the first aspect, the blocking member (40, 240) is a lever member (40, 240) that swings about a rotating shaft (44, 244). The engaging portion (42) formed at one end thereof engages with the plunger (31) and the other end is a blocking portion (43, 43) engageable with the cam portion (21) of the camshaft (20). The steering lock device (1, 2) is characterized in that 243) is formed.

  According to a third aspect of the present invention, in the steering lock device according to the second aspect, the cam interlocking member (50) is a slide member (50) that linearly drives in a direction in which the cam interlocking member (21) contacts and separates from the cam portion (21). And the blocking member (40) is a steering lock device (1, 2) characterized by passing through a hollow portion (50a) formed in the slide member (50).

  According to a fourth aspect of the present invention, in the steering lock device according to the third aspect, the first spring (61) and the second spring (62) are both coil springs, and the first spring (61) The one end is attached to the cam interlocking member (50), the other end is attached to a part (30b) integrated with the solenoid (30), and the second spring (62) is connected to the hollow part (50a). The steering lock device (1) is characterized in that one end thereof is attached to the cam interlocking member (50) and the other end is attached to the blocking member (40).

  According to a fifth aspect of the present invention, in the steering lock device according to the third aspect of the present invention, the steering lock device is pivotally supported coaxially with the rotating shaft (244) of the blocking member (240) and extends so as to be elastically deformed to generate a biasing force. A leaf spring (260) having a first leg (261) and a second leg (262) is provided, and the first leg (261) comes into contact with the cam interlocking member (250) and the blocking member ( 240) functions as the first spring for urging the cam interlocking member (50) toward the restriction position, and the second leg (262) is in contact with the blocking member (240). The steering lock device (2) is characterized in that it functions as the second spring that urges the blocking member (240) toward a direction in which the blocking member (240) is in an allowable position.

  According to a sixth aspect of the present invention, in the steering lock device according to the third aspect, the first spring (361) and the second spring (362) are both coil springs, and the first spring (361) is One end is attached to the cam interlocking member (350) and the other end is attached to a part (30b) integrated with the solenoid (30), and one end of the second spring (362) is steering-locked. A steering lock device (3), wherein the steering lock device (3) is attached to a housing (10) of the device and the other end is attached to the blocking member (40).

  According to the present invention, the steering lock device is small in size, consumes low power, and can reduce the heat generation of the solenoid.

1 is a perspective view showing a first embodiment of a steering lock device 1 according to the present invention. It is the figure which looked at the steering lock device 1 from the key insertion hole 73 side. It is the figure which looked at the steering lock device 1 from the solenoid 30 side. It is sectional drawing which cut | disconnected and showed the steering lock apparatus 1 in the position of the arrow AA in FIG. 2B. FIG. 2 is an exploded perspective view showing a part of the steering lock device 1 in an exploded manner. It is the disassembled perspective view which showed the state which assembled | attached the link 40, the slider 50, etc. from the state shown in FIG. It is a perspective view which shows the principal part of the interlock mechanism in the state in which the key is in the LOCK position and the energization to the solenoid 30 is OFF. It is the figure which looked at FIG. 5A from the cylinder engaging part 22 side. It is the figure which looked at the state of Drawing 5A from the side. It is sectional drawing which shows the principal part of the interlock mechanism in the state of FIG. 5A. It is a perspective view which shows the principal part of an interlock mechanism in the state in which the key exists in an ACC position and the electricity supply to the solenoid 30 is OFF. It is the figure which looked at the state of Drawing 7A from the cylinder engaging part 22 side. It is the figure which looked at the state of Drawing 7A from the side. It is sectional drawing which shows the principal part of the interlock mechanism in the state of FIG. 7A. It is a figure which shows the state which the user tried to turn a key from the ACC position to the LOCK position when electricity supply to the solenoid 30 is ON. It is a figure which shows the state which the user tried to turn a key from the ACC position to the LOCK position when electricity supply to the solenoid 30 is OFF. It is the disassembled perspective view which decomposed | disassembled and showed a part of steering lock apparatus 2 of 2nd Embodiment. It is a perspective view which shows the state which assembled the link 240, the slider 250, and the leaf spring 260. FIG. FIG. 11B is an exploded perspective view showing a state in which the link 240, the slider 250, and the leaf spring 260 are assembled from the state shown in FIG. 11A. It is a perspective view which shows the principal part of the interlock mechanism in the state in which the key is in the LOCK position and the energization to the solenoid 30 is OFF. It is the figure which looked at the state of Drawing 13A from the cylinder engaging part 22 side. It is the figure which looked at the state of Drawing 13A from the side. It is sectional drawing which shows the principal part of the interlock mechanism in the state of FIG. 13A. It is a perspective view which shows the principal part of an interlock mechanism in the state in which the key exists in an ACC position and the electricity supply to the solenoid 30 is OFF. It is the figure which looked at the state of FIG. 15A from the cylinder engaging part 22 side. It is the figure which looked at the state of Drawing 15A from the side. It is sectional drawing which shows the principal part of the interlock mechanism in the state of FIG. 15A. It is the disassembled perspective view which disassembled and showed the interlock mechanism of 3rd Embodiment steering lock apparatus. It is sectional drawing which cut and showed the steering lock apparatus 3 of 3rd Embodiment in the position similar to FIG. 2C of 1st Embodiment.

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

(First embodiment)
FIG. 1 is a perspective view showing a first embodiment of a steering lock device 1 according to the present invention.
FIG. 2A is a view of the steering lock device 1 as viewed from the key insertion hole 73 side.
FIG. 2B is a view of the steering lock device 1 as viewed from the solenoid 30 side.
FIG. 2C is a cross-sectional view of the steering lock device 1 cut at a position indicated by an arrow AA in FIG. 2B.
FIG. 3 is an exploded perspective view showing a part of the steering lock device 1 in an exploded manner.
FIG. 4 is an exploded perspective view showing a state in which the link 40 and the slider 50 are assembled from the state shown in FIG.
In addition, each figure shown below including FIGS. 1-4 is a figure typically shown, 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.

  The steering lock device 1 of this embodiment locks and unlocks the rotation of a steering shaft (steering wheel) (not shown). Further, the steering lock device 1 of the present embodiment includes an interlock mechanism. That is, when the shift lever is set to a reverse range “R”, a neutral range “N”, or a drive range “D” other than the parking range “P”, the steering lock device 1 The rotation of the camshaft 20 that rotates integrally with the cylinder inner 72 is restricted so that the key cannot be removed.

  The steering lock device 1 includes a housing 10, a camshaft 20, a solenoid 30, a link 40, a slider 50, a first spring 61, a second spring 62, a cylinder lock 70, an ignition switch 80, a lock And a drive mechanism 90. In the steering lock device 1 of the present embodiment, the camshaft 20, the solenoid 30, the link 40, the slider 50, the first spring 61, and the second spring 62 constitute the main part of the interlock mechanism. Yes.

  The housing 10 includes a first housing part 10A formed in a substantially rectangular box shape, a second housing part 10B arranged side by side with the first housing part 10A, and the side of the first housing part 10A and the second housing part 10B. And a third housing portion 10C extending in a cylindrical shape.

  On one end side (lower end side in FIG. 1) of the first housing portion 10A, a mounting portion 11 formed in a substantially semicircular shape is provided. This attachment portion 11 is attached to a steering shaft (not shown). Further, a lock shaft insertion hole 12 is opened through the attachment portion 11. In the first housing portion 10A, a lock drive mechanism 90 is housed from the side opposite to the attachment portion 11 (upper side in FIG. 1), and is covered with a lid 91.

The second housing portion 10B is provided with an accommodating portion 13 that is open so that most of the link 40, the slider 50, the first spring 61, and the second spring 62 can be accommodated from above in FIG. Yes. The opening of the housing part 13, a part of the link 40, and the plunger 31 are covered and housed by the case 14.
The case 14 includes an elastically deformable locking claw 14a, and is attached to the housing 10 by engaging the locking claw 14a with a locking portion 13b provided in the second housing portion 10B.
The camshaft 20 and the cylinder lock 70 are housed in the third housing portion 10C.

The camshaft 20 is disposed in the third housing portion 10 </ b> C of the housing 10. The camshaft 20 rotates to a LOCK position, an ACC position, an ON position, and a START position in response to a rotation operation of a key (not shown).
FIG. 5A is a perspective view showing a main part of the interlock mechanism in a state where the key is in the LOCK position and the energization to the solenoid 30 is OFF.
FIG. 5B is a view of the state of FIG. 5A as viewed from the cylinder engaging portion 22 side.
The camshaft 20 includes a cam portion 21, a cylinder engaging portion 22, a switch engaging portion 23, and a lock driving portion 24.

  The cam portion 21 includes a small diameter portion 21a having a small cylindrical outer diameter and a large diameter portion 21b having a larger cylindrical outer diameter than the small diameter portion 21a. At the end of the large diameter portion 21b, when the key is rotated from the ACC position to the LOCK position direction (counterclockwise in FIG. 5B), an acute angle is formed so as to engage with a blocking portion 43 of the link 40 described later. A sharp blocking engagement portion 21c is formed.

  The cylinder engaging portion 22 has a concave shape for engaging the end portion of the cylinder inner 72. Since the cylinder engaging portion 22 is engaged with the cylinder inner 72, when the key is rotated, the rotational force is transmitted to the camshaft 20.

  The switch engaging portion 23 has a convex shape for engaging with the ignition switch 80. Since the switch engaging portion 23 is engaged with the ignition switch 80, when the key is rotated, the rotational force is transmitted to the ignition switch 80 via the camshaft 20.

  The lock drive unit 24 is formed with a cam shape for driving the lock drive mechanism 90, and when the key is rotated in the unlocking direction, the lock drive unit 24 causes the lock slider 93 and the lock shaft 94 to be described later. Drive in unlocking direction.

The solenoid 30 is disposed on the side surface (upward in FIG. 1) of the housing 10 so that the plunger 31 operates in a direction along the direction in which the rotation center axis of the camshaft 20 extends. The solenoid 30 drives the plunger 31 to the protruding position and the retracted position.
The solenoid 30 is arranged so that a part thereof covers the lid 91. The solenoid 30 is fixed to the housing 10 by the one-way bolt 32 passing through the hole 30c and being fastened to the mounting hole 13a. With this configuration, it is difficult to remove the solenoid 30, and it is also difficult to remove the lid 91, which increases the safety against unauthorized destruction.

  The plunger 31 is a rod-like member extending in the direction along the rotation center axis of the camshaft 20, and in accordance with the energization of the solenoid 30, the protruding position and the retracted position in the direction along the rotation center axis. Move forwards and backwards. Near the tip of the plunger 31 on the key insertion hole 73 side, protrusions 31a are provided so as to protrude on both sides. The protrusion 31a is engaged with an engaging portion 42 of the link 40 described later.

The link (blocking member) 40 is a lever member that swings about the rotation shaft 44, and an engaging portion 42 formed at one end thereof is engaged with the protrusion 31 a of the plunger 31. Further, a blocking portion 43 that can be engaged with the cam portion 21 of the camshaft 20 protrudes from the other end of the link 40. The link 40 is disposed through a hollow portion 50 a formed in the slider 50 described later, and the rotating shaft 44 is held in the groove portion 13 c of the housing portion 13.
With such a configuration, the link 40 can be switched and moved between the restriction position and the allowable position by driving the plunger 31. In the restriction position, which is the retracted position of the plunger 31, the link 40 engages the cam portion 21 with the blocking portion 43 to block the rotation of the camshaft 20 to the LOCK position. Further, the link 40 permits the rotation of the camshaft 20 to the LOCK position when the blocking portion 43 is retracted from the cam portion 21 at the allowable position where the plunger 31 protrudes.

The slider (cam interlocking member) 50 is a slide member that is linearly driven in a direction in which it is in contact with and away from the cam portion 21 of the camshaft 20, and is provided in the housing portion 13 so as to be linearly movable. The slider 50 moves the link 40 between the restriction position and the allowable position according to the rotation of the camshaft 20 in conjunction with the cam portion 21 and the link 40. Specifically, the slider 50 has a large diameter of the cam portion 21 with which the slider 50 is in contact with the rotation of the camshaft 20 from the LOCK position to the ON position (clockwise rotation in FIG. 5B). In conjunction with the movement of the portion 21b, the link 21 is moved (moved downward in FIG. 5B) by a biasing force of a first spring 61 described later, and the link 40 is shifted to the blocking position.
The slider 50 has a hollow portion 50a, spring receiving portions 50b and 50c, and a slope 50d.

  The hollow portion 50a is opened through the center of the slider along the extending direction of the camshaft 20. As described above, the link 40 passes through the hollow portion 50a.

  The spring receiving portion 50b is provided in each of the overhanging portions protruding on both sides of the slider 50, and protrudes upward in FIG. 3 and is formed in a substantially cylindrical shape. These two spring receiving portions 50 b hold the first spring 61 so as to be inserted into the first spring 61, respectively.

  The spring receiving portion 50c protrudes upward in FIG. 3 at a lower portion in FIG. 3 in the hollow portion 50a and is formed in a substantially cylindrical shape. The spring receiving portion 50 c holds the second spring 62 so as to be inserted into the second spring 62.

  The inclined surface 50 d is provided at a portion where the slider 50 comes into contact with the cam portion 21 of the camshaft 20. The inclined surface 50d can move the slider 50 in a direction away from the camshaft 20 (upward in FIG. 3) by receiving force from the cam portion 21 when the camshaft 20 rotates from the ACC position to the LOCK position. Inclined in the direction.

  Two first springs 61 are provided, each having one end attached to the spring receiving portion 50 b of the slider 50 and the other end being a coil spring attached to the housing 30 b of the solenoid 30 integrated with the solenoid 30. The first spring 61 urges the slider 50 in the direction in which the link 40 becomes the restriction position, that is, the direction in which the blocking portion 43 approaches the camshaft 20 (downward in FIG. 3).

  The second spring 62 is a coil spring disposed in the hollow portion 50 a of the slider 50, one end of which is attached to the spring receiving portion 50 c of the slider 50 and the other end is attached to the link 40. The second spring 62 urges the link 40 in the direction in which the link 40 is in the allowable position, that is, in the direction in which the blocking portion 43 is separated from the camshaft 20 (upward in FIG. 3).

  The cylinder lock 70 is a key cylinder configured to transmit the rotation of the key to the camshaft 20 when the key is rotated in a state of being engaged with the camshaft 20, and is housed in the housing 10. ing. The cylinder lock 70 includes a cylinder outer 71 fixed to the housing 10, a cylinder inner 72 that can rotate within the cylinder outer 71, and a key insertion hole 73 that is opened at the end of the cylinder inner 72. .

The ignition switch 80 is attached to the end of the housing 10 and the switch engaging portion 23 of the camshaft 20 is engaged. When the camshaft 20 is rotated, the rotation is transmitted into the ignition switch 80.
The ignition switch 80 is provided with a connector 81 provided so as to protrude outside the ignition switch 80, and a connector (not shown) for electrical connection to the ignition switch 80 is connected to the ignition switch 80.

  The lock driving mechanism 90 includes a lid 91, a spring 92, a lock slider 93, and a lock shaft 94. When the lock shaft 94 protrudes and retracts through the lock shaft insertion hole 12, a steering shaft (not shown). Lock and unlock the rotation of the (steering wheel). In the lock driving mechanism 90, a spring 92, a lock slider 93, and a lock shaft 94 are housed in the first housing portion 10A so as to be covered with a lid 91. The lock shaft 94 is movably attached integrally with the lock slider 93, and the lock shaft 94 and the lock slider 93 are urged by a spring 92 toward the lock position where the lock shaft 94 protrudes. The lock slider 93 has an opening 93a at the center, and the camshaft 20 passes through the opening 93a. The shape in the opening 93a is adapted to engage with the lock driving portion 24 of the camshaft 20, and the lock slider 93 and the lock shaft 94 move forward and backward according to the rotational position of the camshaft 20.

Next, the operation of the steering lock device 1 of the present embodiment will be described.
FIG. 6A is a side view of the state of FIG. 5A.
FIG. 6B is a cross-sectional view showing the main part of the interlock mechanism in the state of FIG. 5A.

When the key is in the LOCK position, the rotational position of the camshaft 20 is a position where the outer peripheral surface of the large-diameter portion 21b of the cam portion 21 contacts the slider 50. As a result, the slider 50 is in a position near the solenoid 30 and is pressed against the outer peripheral surface of the large-diameter portion 21 b of the cam portion 21 by the biasing force of the first spring 61.
When the key is in the LOCK position, the link 40 can move to a permissible position where the blocking portion 43 is away from the cam portion 21 because the slider 50 is in a position closer to the solenoid 30, and the second spring Since the force is applied to the allowable position side by the urging force of 62, it is in the allowable position shown in FIG. 6B.
When the key is in the LOCK position, the plunger 31 is in the protruding position protruding from the solenoid 30 because the link 40 is in the allowable position.
In this way, when the key is in the LOCK position, the camshaft 20 is not restricted from rotating, and therefore can be rotated to the ACC side when the key is operated.

FIG. 7A is a perspective view showing a main part of the interlock mechanism in a state where the key is in the ACC position and the energization to the solenoid 30 is OFF.
FIG. 7B is a view of the state of FIG. 7A as viewed from the cylinder engaging portion 22 side.
FIG. 8A is a side view of the state of FIG. 7A.
FIG. 8B is a cross-sectional view showing the main part of the interlock mechanism in the state of FIG. 7A.

When the key is at the ACC position, the rotational position of the camshaft 20 is separated from the position where the outer peripheral surface of the large diameter portion 21b of the cam portion 21 contacts the slider 50, and the outer peripheral surface of the small diameter portion 21a contacts the slider 50. Position. Thereby, the slider 50 is moved to a position where it abuts on the outer peripheral surface of the small diameter portion 21 a by the urging force of the first spring 61.
When the key is in the ACC position, the link 40 is pushed toward the camshaft 20 by the contact portion 50e on the solenoid 30 side (upper side in FIG. 8B) of the hollow portion 50a because the slider 50 is in the above-described position. Thus, the blocking portion 43 is in a restricting position rotated in a direction close to the cam portion 21 (clockwise direction in FIG. 8B).
When the key is in the ACC position, the plunger 31 is in the retracted position where it is retracted into the solenoid 30 because the link 40 is in the restricted position.
Thus, when the key is at the ACC position, the plunger 31 moves to the retracted position even when the solenoid 30 is not energized. In this state, when the energization state of the solenoid 30 is switched between ON and OFF, the interlock mechanism can restrict the rotation of the camshaft 20 to the LOCK position or release the restriction.

FIG. 9 is a diagram showing a state where the user tries to turn the key from the ACC position to the LOCK position when the energization to the solenoid 30 is ON.
When the key is rotated from the ACC position to the LOCK position, a force for rotating the camshaft 20 counterclockwise in FIG. 9 acts. By the counterclockwise rotation of the camshaft 20, the blocking engagement portion 21c contacts the inclined surface 50d and moves the slider 50 in a direction away from the camshaft 20 (upward in FIG. 9).
However, since energization to the solenoid 30 is ON, the plunger 31 is attracted and held in the retracted position. Therefore, the link 40 cannot move and maintains the state at the blocking position, and the blocking portion 43 remains at the position where the rotation of the camshaft 20 is blocked. Therefore, even if the camshaft 20 is rotated counterclockwise, the blocking engagement portion 21c comes into contact with the blocking portion 43, and the camshaft 20 is further prevented from rotating.

FIG. 10 is a diagram illustrating a state where the user tries to turn the key from the ACC position to the LOCK position when the energization to the solenoid 30 is OFF.
When the key is rotated from the ACC position to the LOCK position, a force that rotates counterclockwise in FIG. 10 acts on the camshaft 20 as in FIG. By the counterclockwise rotation of the camshaft 20, the blocking engagement portion 21c contacts the inclined surface 50d and moves the slider 50 away from the camshaft 20 (upward in FIG. 10).
And since the electricity supply to the solenoid 30 is OFF, the plunger 31 can move from the retracted position to the protruding position. Therefore, the link 40 moves from the blocking position toward the allowable position by the urging force of the second spring 62 as the slider 50 moves. As a result, the blocking portion 43 moves away from the camshaft 20 and retreats to a position where the rotation of the camshaft 20 is not restricted, that is, a position that deviates from the movement locus of the large diameter portion 21b. Therefore, the key can be rotated to the LOCK position without the blocking engagement portion 21c coming into contact with the blocking portion 43.

  As described above, according to the first embodiment, the slider 50 is operated using the force by which the key is rotated, and the plunger 31 is mechanically operated via the link 40. When the plunger 31 sucks and drives the plunger 31, it is possible to prevent the first spring 61 from being applied. Therefore, the operation load of the plunger 31 that has been necessary in the past can be made unnecessary, and the solenoid 30 only needs to generate a suction force that holds the plunger 31 in the suction position. Therefore, the heat generation amount of the solenoid 30 can be reduced.

  Further, since the blocking portion 43 is configured by the link 40 that is a swinging lever member, the blocking portion 43 is in a fitted state and a non-fitted state with the cam portion 21 even when the stroke of the plunger 31 is small. It is possible to secure a stroke necessary for switching. Therefore, since the stroke of the plunger 31 is small, power saving and downsizing of the solenoid 30 can be achieved.

  Furthermore, since the two first springs 61 are used in parallel and one second spring 62 is disposed between the link 40 and the slider 50, the slider 50 can be smoothly driven linearly. Moreover, the first spring 61 and the second spring 62 can be efficiently provided in a small space by such an arrangement.

(Second Embodiment)
FIG. 11A is an exploded perspective view showing a part of the steering lock device 2 of the second embodiment in an exploded manner.
FIG. 11B is a perspective view showing a state in which the link 240, the slider 250, and the leaf spring 260 are assembled.
FIG. 12 is an exploded perspective view showing a state where the link 240, the slider 250, and the leaf spring 260 are assembled from the state shown in FIG. 11A.
FIG. 13A is a perspective view showing the main part of the interlock mechanism in a state where the key is in the LOCK position and the energization to the solenoid 30 is OFF.
13B is a view of the state of FIG. 13A as viewed from the cylinder engaging portion 22 side.
FIG. 14A is a side view of the state of FIG. 13A.
FIG. 14B is a cross-sectional view showing the main parts of the interlock mechanism in the state of FIG. 13A.
FIG. 15A is a perspective view showing a main part of the interlock mechanism in a state where the key is in the ACC position and the energization to the solenoid 30 is OFF.
FIG. 15B is a view of the state of FIG. 15A as viewed from the cylinder engaging portion 22 side.
FIG. 16A is a side view of the state of FIG. 15A.
FIG. 16B is a cross-sectional view showing the main parts of the interlock mechanism in the state of FIG. 15A.

  The steering lock device 2 according to the second embodiment is a configuration in which two types of the first spring 61 and the second spring 62 in the first embodiment, a total of three coil springs, are provided by one leaf spring 260. It is. The steering lock device 2 of the second embodiment is the same as the steering lock device 1 of the first embodiment, except for the portion related to the leaf spring 260. Therefore, the same reference numerals are given to the portions that perform the same functions as those in the first embodiment described above, and repeated descriptions are omitted as appropriate.

  The link 240 is a member substantially the same as the link 40 of the first embodiment, and includes a shaft hole 241, an engagement portion 242, and a blocking portion 243. However, the rotating shaft 244 that rotatably supports the link 240 is different from the link 40 of the first embodiment in that a leaf spring 260 is provided coaxially.

  The slider 250 is substantially the same member as the slider 50 of the first embodiment. However, the slider 250 of the second embodiment is not provided with a shape for holding the spring provided in the slider 50 of the first embodiment.

The leaf spring 260 is a leaf spring member configured to have the functions of the first spring 61 and the second spring 62 of the first embodiment. The leaf spring 260 is supported by having an axial hole 260a opened in an arm portion extending upward in FIG. 11A, and a rotating shaft 244 passing through the axial hole 260a.
The leaf spring 260 includes a first leg 261 and a second leg 262.

  The first leg 261 protrudes and extends toward the ignition switch 80 side. The first leg 261 is elastically deformed to generate a biasing force, and biases the slider 50 toward the camshaft 20 side. The first leg 261 has a function corresponding to the first spring 61 of the first embodiment.

  The second leg 262 is disposed closer to the solenoid 30 side than the first leg 261 by folding back the root portion, and extends to protrude toward the ignition switch 80 side. The second leg 262 is elastically deformed to generate a biasing force, and biases the link 240 counterclockwise in FIG. 14A. The second leg 262 has a function corresponding to the second spring 62 of the first embodiment.

  Since the operation of the steering lock device 2 of the second embodiment is the same as the operation of the steering lock device 1 of the first embodiment, detailed description thereof is omitted.

According to the second embodiment described above, the functions of the first spring 61 and the second spring 62 of the first embodiment are configured by the leaf spring 260 provided in one member. As a result, in the second embodiment, only one coil spring is required, which is three coil springs. Therefore, the cost can be reduced by reducing the number of parts.
In the second embodiment, the leaf spring 260 can be attached coaxially with the rotation shaft 244 of the link 240, and the link 240, the slider 250, the leaf spring 260, and the rotation shaft 244 are assembled in advance. Thus, as shown in FIG. 11B, the sub assembly can be made, so that the number of assembling steps can be reduced.

(Third embodiment)
FIG. 17 is an exploded perspective view showing the interlock mechanism of the steering lock device 3 according to the third embodiment in an exploded manner.
FIG. 18 is a cross-sectional view showing the steering lock device 3 of the third embodiment cut at the same position as FIG. 2C of the first embodiment.
The steering lock device 3 of the third embodiment has the same form as the steering lock device 1 of the first embodiment, except that the holding form of the first spring 361 and the second spring 362 is different. Therefore, the same reference numerals are given to the portions that perform the same functions as those in the first embodiment described above, and repeated descriptions are omitted as appropriate.

The slider (cam interlocking member) 350 has substantially the same function as the slider 50 of the first embodiment, but differs in the form of the spring receiving portion 350b and the spring receiver provided in the first embodiment. The difference from the slider 50 of the first embodiment is that the portion 50c is not provided.
Unlike the first embodiment, the spring receiving portion 350b is formed in a hollow bottomed cylindrical shape. A first spring 361 is inserted and held in the spring receiving portion 350b.

  The first spring 361 has the same function as the first spring 61 of the first embodiment except that the first spring 361 is held by the spring receiving portion 350b.

Unlike the second spring 62 of the first embodiment, the second spring 362 is not attached to the slider 350. The second spring 362 is a coil spring provided between the spring receiving portion 13 e of the housing 10 and the link 40. The second spring 362 biases the link 40 in the direction in which the link 40 is in the allowable position, that is, in the direction in which the blocking portion 43 is separated from the camshaft 20 (upward in FIG. 17).
With this configuration, the second spring 362 is easier to assemble than in the first embodiment, and one end of the second spring 362 is fixed to the housing 10 that is a fixing member. There is less concern about slipping or coming off.

  Since the operation of the steering lock device 3 of the third embodiment is the same as that of the steering lock device 1 of the first embodiment, a detailed description thereof is omitted.

  As described above, even if the form of the interlocking mechanism is different as in the third embodiment, the same effect as in the first embodiment can be obtained.

  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.

  For example, in the first embodiment, the first spring 61 has one end attached to the spring receiving portion 50 b of the slider 50 and the other end attached to the housing 30 b of the solenoid 30 integrated with the solenoid 30. explained. For example, the other end of the first spring 61 may be attached to a member different from the solenoid 30.

DESCRIPTION OF SYMBOLS 1 Steering lock apparatus 2 Steering lock apparatus 3 Steering lock apparatus 10 Housing 10A 1st housing part 10B 2nd housing part 10C 3rd housing part 11 Mounting part 12 Lock shaft insertion hole 13 Housing | casing part 13a Mounting hole 13b Locking part 13c Groove part 13e Spring receiving part 14 Case 14a Locking claw 20 Cam shaft 21 Cam part 21a Small diameter part 21b Large diameter part 21c Blocking engagement part 22 Cylinder engagement part 23 Switch engagement part 24 Lock drive part 30 Solenoid 30b Housing 30c Hole 31 Plunger 31a Projection 32 One-way bolt 40 Link 42 Engagement portion 43 Blocking portion 44 Rotating shaft 50 Slider 50a Hollow portion 50b Spring receiving portion 50c Spring receiving portion 50d Slope 50e Abutting portion 61 First spring 62 Second spring 7 Cylinder lock 71 Cylinder outer 72 Cylinder inner 73 Key insertion hole 80 Ignition switch 81 Connector 90 Lock drive mechanism 91 Lid 92 Spring 93 Lock slider 93a Opening 94 Lock shaft 240 Link 241 Shaft hole 242 Engaging portion 243 Blocking portion 244 Rotating shaft 250 Slider 260 Leaf spring 260a Shaft hole 261 First leg 262 Second leg 350 Slider 350b Spring receiving portion 361 First spring 362 Second spring

Claims (6)

A camshaft disposed within the housing and having a cam portion that rotates to a LOCK position, an ACC position, an ON position, and a START position according to a key rotation operation;
A solenoid that drives the plunger to a protruding position and a retracted position;
The plunger can be switched between a restriction position and an allowable position by driving the plunger, and the rotation of the camshaft to the LOCK position is prevented at the restriction position that is the retracted position of the plunger, and the plunger is allowed to protrude. A blocking member that allows rotation of the camshaft to a LOCK position in position;
A cam interlocking member that interlocks with the cam portion and the blocking member, and causes the blocking member to transition between a restricting position and an allowable position in accordance with rotation of the camshaft;
A first spring for urging the cam interlocking member in a direction in which the blocking member is in the restricting position;
A second spring for urging the blocking member in a direction in which the blocking member is in an allowable position;
With
The cam interlocking member is moved by the biasing force of the first spring by interlocking with the cam portion in response to the camshaft rotating from the LOCK position to the ON position side, and the blocking member is shifted to the blocking position. Let the steering lock device. The steering lock device according to claim 1, wherein
The blocking member is a lever member that swings about a rotation shaft, and an engaging portion formed at one end thereof engages with the plunger,
A blocking portion engageable with the cam portion of the camshaft is formed at the other end;
A steering lock device. In the steering lock device according to claim 2,
The cam interlocking member is a slide member that is linearly driven in a direction in which the cam interlocking member is in contact with or separated from the cam portion.
The blocking member passes through a hollow portion formed in the slide member;
A steering lock device. In the steering lock device according to claim 3,
The first spring and the second spring are both coil springs,
The first spring has one end attached to the cam interlocking member and the other end attached to a part integrated with the solenoid.
The second spring is disposed in the hollow portion, one end of which is attached to the cam interlocking member, and the other end is attached to the blocking member;
A steering lock device. In the steering lock device according to claim 3,
A leaf spring having a first leg and a second leg that are supported coaxially with the rotation axis of the blocking member and extend so as to generate an urging force by elastic deformation;
The first leg functions as the first spring that urges the cam interlocking member in a direction that comes into contact with the cam interlocking member and the blocking member becomes a restriction position;
The second leg functions as the second spring that urges the blocking member in a direction in which the blocking member comes into contact with the blocking member and is in an allowable position;
A steering lock device. In the steering lock device according to claim 3,
The first spring and the second spring are both coil springs,
The first spring has one end attached to the cam interlocking member and the other end attached to a part integrated with the solenoid.
The second spring has one end attached to the housing of the steering lock device and the other end attached to the blocking member;
A steering lock device.

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