JP2016068743A - Steering lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steering lock device that can detect overload of a driving source during energization while suppressing a manufacturing cost.SOLUTION: A steering lock device for locking a steering of a vehicle includes: a lock bar 3 movable between a separate position and a lock position; a cam member 4 rotating between a non-working position and a working position to enable the movement of the lock bar 3; a motor M that enables the cam member 4 to rotate between the non-working position and the working position; and a housing 2 for accommodating the lock bar 3, the cam member 4 and the motor M. The steering lock device further includes control means 10 that can detect a voltage or a current supplied to the motor M in a process of the movement of the lock bar 3 from the separate position to the lock position and that can detect overload of the motor M during energization on the basis of the voltage or the current supplied to the motor M.SELECTED DRAWING: Figure 15

Description

  The present invention relates to a steering lock device for locking the steering of a vehicle.

  In a vehicle such as a two-wheeled vehicle, a steering lock that locks a lock bar on a steering wheel (rotating shaft of a handlebar, etc.) is usually locked by rotating an ignition key inserted through a key hole in a predetermined direction. However, it has been difficult to apply to a device equipped with a smart entry system that does not require an operation using an ignition key. Thus, there is an increasing demand to electrically engage the lock bar with respect to the steering in the steering lock device. This is assumed to be a case where a keyless entry system or the like that has already been adopted for a four-wheeled vehicle is deployed to a two-wheeled vehicle. For example, like the system disclosed in Patent Document 1, an electric operation of a lock bar is essential. .

  The conventional technique disclosed in Patent Document 1 is for enabling the steering to be locked or unlocked without operating the key cylinder by a remote control lock operation system using an infrared signal. A transmitter capable of transmitting a predetermined infrared signal, a receiver capable of receiving a signal from the transmitter, and an electric actuator that is driven to move the lock bar based on the signal received by the receiver. It is installed.

JP 2003-11865 A

  However, in the above-described prior art, for example, when the drive source is driven in a state where the position of the lock bar does not coincide with the lock position of the steering and the lock bar is moved from the separated position to the lock position, Therefore, there is a possibility that energization of the drive source may be continuously performed for a long time. As described above, when energization of the drive source is continuously performed for a long time, there is a problem that an overload is generated in the drive source, leading to a failure or the like. Although it is possible to separately provide a sensor for detecting the locking position of the lock bar to detect an overload of the drive source, there is a problem in that the manufacturing cost increases.

  The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a steering lock device that can detect an overload of a drive source during energization while suppressing manufacturing costs.

  The invention according to claim 1 is a steering lock device for locking the steering of the vehicle, and is movable between a separated position separated from the steering of the vehicle and a locked position where the steering is locked with the steering. The lock bar can be moved between a non-actuated position and an actuated position around a rotation axis to move the lock bar, and when in the non-actuated position, the lock bar is set to the separated position, and the actuated A cam member that sets the lock bar to the locked position when in position, a drive source that can be driven by energization to rotate the cam member between the non-actuated position and the actuated position, and drive the drive source A control means that can be controlled, and a housing that houses the lock bar, cam member, and drive source, and the control means includes the lock bar The voltage or current supplied to the drive source can be detected in the process of moving from the separation position to the lock position, and overload of the drive source during energization is detected based on the voltage or current supplied to the drive source. It is made possible.

  According to a second aspect of the present invention, in the steering lock device according to the first aspect, the control means stops the drive source when an overload of the drive source during the energization is detected, and then the lock bar. The drive source is reversely driven so as to move to a separation position.

  According to a third aspect of the present invention, in the steering lock device according to the first or second aspect, the steering lock device is disposed between the lock bar and the cam member, and moves according to the rotation of the cam member. The slider is capable of moving the lock bar between the separation position and the lock position, a first gear member that can be rotated by a driving force of the drive source, and the cam member, and the first gear. A second gear member that receives the rotational force of the member and can rotate about the rotation shaft together with the cam member, and the control means detects the overload of the drive source during the energization, The driving source is driven in reverse to rotate the first gear member and the second gear member in opposite directions.

  According to a fourth aspect of the present invention, in the steering lock device according to any one of the first to third aspects, the first magnet that moves together with the lock bar, and a board that is attached to the housing, 1st detection means which can detect that the said lock bar exists in a separation position by detecting 1 magnet, and the case holding the said board | substrate, The said control means is after reverse drive of the said drive source. The drive source is stopped on condition that the first detection means detects the separation position of the lock bar.

  According to a fifth aspect of the present invention, in the steering lock device according to the fourth aspect, the second magnet that rotates together with the cam member, and the second magnet that is formed on the substrate and detects the second magnet, the cam member is non-coated. An operation position and a second detection means capable of detecting the operation position, and the control means detects the separation position of the lock bar after the reverse drive of the drive source, In addition, the drive source is stopped on condition that the second detection means detects a non-operating position of the cam member.

  According to the first aspect of the present invention, the control means can detect the voltage or current supplied to the drive source in the process of moving the lock bar from the separated position to the lock position, and the voltage or current supplied to the drive source. Since the overload of the drive source during energization can be detected based on the current, the overload of the drive source during energization can be detected while suppressing the manufacturing cost.

  According to the second aspect of the present invention, the control means reversely drives the drive source so as to move the lock bar to the separated position after stopping the drive source when an overload of the drive source during energization is detected. Therefore, when an overload of the drive source at the time of energization is detected, the lock bar can be returned to the separated position which is the initial position, and the subsequent control by the control means can be performed smoothly.

  According to the invention of claim 3, it is disposed between the lock bar and the cam member, and moves according to the rotation of the cam member to move the lock bar between the separated position and the lock position. And a first gear member that can be rotated by a driving force of a driving source, and a cam member, and can receive the rotational force of the first gear member and rotate about the rotation axis together with the cam member. A second gear member, and the control means rotates the first gear member and the second gear member in the reverse direction by driving the drive source in reverse when an overload of the drive source during energization is detected. When the overload of the drive source during energization is detected, the lock bar can be reliably and smoothly returned to the separation position which is the initial position, and the control by the subsequent control means can be performed more smoothly.

  According to the fourth aspect of the present invention, the first magnet that moves together with the lock bar and the substrate attached to the housing are formed. By detecting the first magnet, it can be detected that the lock bar is in the separated position. And a control unit configured to stop the drive source on condition that the first detection unit has detected the separated position of the lock bar after the reverse drive of the drive source. Therefore, when the control means detects an overload of the drive source during energization, it can be detected by the first detection means that the lock bar has returned to the separation position which is the initial position.

  According to the fifth aspect of the present invention, the second magnet that rotates together with the cam member and the second magnet that is formed on the substrate and detects the second magnet can detect that the cam member is in the non-operating position and the operating position. The first detecting means detects the separated position of the lock bar and the second detecting means detects the non-operating position of the cam member after the reverse drive of the drive source. The drive source is stopped on the condition that when the control means detects an overload of the drive source during energization, the lock bar returns to the initial position, and the cam member is the initial position. It can be detected by the first detection means and the second detection means.

The top view which shows the steering lock apparatus which concerns on embodiment of this invention The top view which shows the state which is the same steering lock device, and removed the cover The top view which shows the state which removed the cover and case which is the same steering lock device The top view which shows the state which removed the cover and case, and removed the 2nd gear member from the cam member (non-operation position) which is the same steering lock device. The exploded perspective view for showing the internal configuration of the steering lock device Longitudinal sectional view showing the internal configuration of the steering lock device Cross-sectional view for showing the internal configuration of the steering lock device A plan view showing a cam member in the steering lock device 3 views showing a second gear member in the steering lock device 3 views showing a slider in the steering lock device The schematic diagram which shows the relationship between the cam member (non-operation position) and the lock bar (separation position) in the steering lock device The schematic diagram which shows the relationship between the cam member (between a non-operation position and an operation position) and a lock bar (between a separation position and a lock position) in the steering lock device. The schematic diagram which shows the relationship between the cam member (operation position) and the lock bar (lock position) in the same steering lock device The schematic diagram which shows the positional relationship of the lock bar and the rotating shaft of a cam member in the steering lock device The block diagram which shows the electrical connection relation of the control means in the steering lock device The flowchart which shows the control content by the control means in the steering lock device

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The steering lock device 1 according to this embodiment is for locking the vehicle steering to prevent theft. As shown in FIGS. 1 to 5, the lock bar 3, the cam member 4, and the drive source are used. The motor M, the housing 2, the slider 5, the first gear member G1, the second gear member G2, the case C for housing the substrate 7, and the control means 10 attached to the substrate 7 are configured. Has been.

  The housing 2 constitutes the casing of the steering lock device 1 according to the present embodiment, and fixes the rotating shaft L of the cam member 4 and houses the lock bar 3, the cam member 4 and the motor M (drive source). Configured. In addition, a first gear member G1 and a second gear member G2 are rotatably attached to the inside of the housing 2 according to the present embodiment, and a case C that houses the substrate 7 is fixed. Covered.

  The lock bar 3 is movable between a separation position (see FIG. 11) separated from the steering wheel S of the vehicle and a lock position (see FIG. 13) locked with the steering wheel S to lock the steering wheel. It consists of a metal member. More specifically, the lock bar 3 is attached to the slider 5 and is configured to slide along the slider 5 between the separated position and the lock position in the housing 2 in a substantially linear shape. Is housed in the housing 2 at the separated position, and protrudes from the housing 2 at the locked position so as to be locked in the locking hole Sa of the steering wheel S.

  The locking hole Sa is formed by a hole formed in the shaft of the steering wheel S and the like, and is set so as to be able to match the position where the lock bar 3 protrudes by rotating the steering wheel S to the steering lock position. ing. Thus, after turning the steering wheel S to the steering lock position, the lock bar 3 can be moved from the separated position to the lock position, thereby locking the steering wheel S and restricting the rotation. By moving from the locked position to the separated position, the steering wheel S is unlocked and allowed to rotate.

  The cam member 4 can rotate between the non-actuated position (see FIGS. 4 and 11) and the actuated position (see FIGS. 13 and 14) around the rotation axis L to move (slide) the lock bar 3. 8, which is made of a metal plate material that can set the lock bar 3 to the separated position when in the non-operating position and set the lock bar 3 to the lock position when in the operating position, for inserting the rotating shaft L as shown in FIG. Insertion hole 4a, an assembly hole 4b for integrating with the second gear member G2, and a pair of assembly projections 4c (which will be described in detail later).

  The rotating shaft L of the cam member 4 according to the present embodiment is made of a metal shaft-like member fixed to the housing 2, and as shown in FIG. 6, one end thereof is a press-fit hole 2 b formed in the housing 2. The other end is inserted and assembled into an insertion hole C1 formed in the case C. In particular, in the present embodiment, as shown in FIG. 14, the rotation axis L of the cam member 4 is disposed on the extension line E in the direction from the lock position of the lock bar 3 to the separation position.

  The second gear member G2 is integrated with the cam member 4 and receives the rotational force of the first gear member G1, and can rotate around the rotation axis L together with the cam member 4, as shown in FIG. In addition, a disc-shaped member having a tooth shape on the outer peripheral surface, an insertion hole G2a for inserting the rotation shaft L, a convex portion G2b that can be inserted into the assembly hole 4b of the cam member 4, and a cam The pair of assembling convex portions 4c of the member 4 and the assembling hole portions G2c at corresponding positions are configured. Further, a substantially arc-shaped second magnet m2 is attached to one surface of the second gear member G2.

  Then, the protrusion G2b is inserted through the assembly hole 4b while the insertion hole 4a and the insertion hole G2a are matched, and the assembly protrusion 4c is inserted through the assembly hole G2c, and the cam member 4 and the second gear member G2. The cam member 4 and the second gear member G2 are integrated with each other by fixing them in a state where they are overlapped. By inserting the rotation shaft L into the insertion holes 4a and G2a of the cam member 4 and the second gear member G2 integrated in this way, the cam member 4 and the second gear member G2 both have the rotation shaft L. It can be rotated around the center.

  The motor M (drive source) is attached to a predetermined position of the housing 2 and can be driven by energization to rotate the cam member 4 between the non-actuated position and the actuated position. As shown in FIG. A first gear member G1 made of a worm gear is attached to the output shaft Ma. The motor M is electrically connected to a battery (not shown) mounted on the vehicle (two-wheeled vehicle) and can supply power using the battery as a power source. However, the motor M can exclusively supply power to the motor M. The steering lock device 1 may be provided with a dedicated power source.

  The first gear member G1 is attached to the output shaft Ma and can be rotated by the driving force of the motor M, and is assembled in mesh with the tooth shape of the second gear member G2. When the motor M is driven, the first gear member G1 rotates with the output shaft Ma, and the rotational force is transmitted to the second gear member G2, so that the second gear member G2 and the cam member 4 are integrated. It is configured to rotate. The motor M is capable of forward rotation and reverse rotation. When the motor M is rotated forward, the second gear member G2 and the cam member 4 are rotated in one direction. The gear member G2 and the cam member 4 can be rotated in the other direction.

  On the other hand, the lock bar 3 has a groove shape 3a formed in the circumferential direction at the base end thereof, and the groove shape 3a is fitted into the fitting portion 5b of the slider 5 as shown in FIG. Thus, the slider 5 is assembled. The slider 5 is disposed between the lock bar 3 and the cam member 4 and moves together with the lock bar 3 according to the rotation of the cam member 4 to move the lock bar 3 between the separation position and the lock position. 4 and 10, as shown in FIGS. 4 and 10, the contact portion 5a that can contact the cam member 4, the fitting portion 5b, and the mounting portion 5c to which the first magnet m1 is attached. And have.

  Further, a return spring 6 comprising a coil spring is interposed in the slider 5, and the slider 5 and the lock bar 3 are always directed toward the initial position (separated position of the lock bar 3) by the urging force of the return spring 6. It is energized. Thus, when the cam member 4 is rotated from the non-operating position to the operating position and the contact portion 5a is pressed, the lock bar 3 is moved together with the slider 5 from the separated position to the locked position against the urging force of the return spring 6. When the cam member 4 rotates from the operating position to the non-operating position, the lock bar 3 can move from the lock position to the separated position together with the slider 5 by the urging force of the return spring 6.

  The case C is formed of a box-shaped member that accommodates the substrate 7 and is fixed at a predetermined position on the cover K side (upper side in the figure) in the housing 2 as shown in FIGS. A predetermined electrical wiring is printed on the substrate 7, and a control means 10 composed of a microcomputer is attached at a predetermined position. The control means 10 can control the driving of the motor M, and rotates the cam member 4 from the non-operating position to the operating position by driving the motor M in the normal direction (that is, the lock bar 3 is locked from the separated position). The cam member 4 is rotated from the operating position to the non-operating position (that is, the lock bar 3 is moved from the locking position to the separated position). .

  Further, as shown in FIG. 6, the case C according to the present embodiment is formed on one surface (in the figure, projecting upward) and inserted into the positioning hole 7 a of the substrate 7. And a second protrusion capable of positioning the housing 2 by being inserted into the positioning hole 2a of the housing 2 formed on the other surface (projecting downward in the figure). The projection Cb is provided, and the first projection Ca and the second projection Cb are formed coaxially.

  As described above, the case C includes the first protrusion Ca that is formed on one surface and can position the substrate 7, and the second protrusion Cb that is formed on the other surface and can position the housing 2. Since the first protrusion Ca and the second protrusion Cb are formed coaxially, an assembly error between the first detection means n1 formed on the substrate 7 and the lock bar 3 disposed on the housing 2 (this embodiment) In the embodiment, an assembly error between the first detection means n1 formed on the substrate 7 and the slider 5 disposed in the housing 2 can be suppressed, and an error in detecting the position of the lock bar 3 can be suppressed. Can be more reliably suppressed.

  In addition to the above effects, an assembly error between the second detection means (n2, n3) formed on the substrate 7 and the cam member 4 disposed on the housing 2 (in this embodiment, formed on the substrate 7). Assembly error between the second detection means (n2, n3) and the second gear member G2) disposed in the housing 2), and an error in detecting the position of the cam member 4 can be suppressed. Can be more reliably suppressed.

  Further, the steering lock device 1 according to the present embodiment is a displacement that prevents the worm gear or the output shaft Ma of the motor M from being displaced when a load is applied to the first gear member G1 (worm gear) via the lock bar 3. Preventing means (first displacement preventing means 8 and second displacement preventing means 9) is provided. The first displacement prevention means 8 is made of a resin molded product, a rubber material, or the like, and as shown in FIG. 7, a recess 8a is formed through which the base end of the output shaft Ma of the motor M is inserted with a predetermined clearance. When the load is applied to the first gear member G1 and the output shaft Ma moves in the axial direction, the proximal end of the output shaft Ma and the recess 8a come into contact with each other to restrict the movement.

  The second displacement prevention means 9 is made of a resin molded product, a rubber material, or the like, and as shown in FIG. 7, a recess 9a is formed through which the tip of the output shaft Ma of the motor M is inserted with a predetermined clearance. When the load is applied to the first gear member G1 and the output shaft Ma moves in that direction, the tip of the output shaft Ma and the concave portion 9a come into contact with each other to restrict the movement. Thus, the first gear member G1 is composed of a worm gear coaxial with the output shaft Ma of the motor M, and when a load is applied to the worm gear via the lock bar 3, the worm gear or the output shaft Ma of the motor M is provided. Since the displacement preventing means (8, 9) for preventing the shift is provided, the lock bar 3 can be surely locked to the steering wheel S.

  Furthermore, the board | substrate 7 which concerns on this embodiment is attached with the 1st detection means n1 which can detect the magnetism of the 1st magnet m1. As described above, the first magnet m1 moves together with the lock bar 3 by being attached to the attachment portion 5c of the slider 5, and the first detection means n1 is a sensor that can detect magnetism such as a Hall IC. Thus, it can be detected that the lock bar 3 is in the separated position by detecting the magnetism of the first magnet m1.

  That is, as shown in FIGS. 11 to 13, the first detection unit n <b> 1 is disposed at a position facing the first magnet m <b> 1 when the lock bar 3 is at the separation position, and the lock bar 3 is at the separation position. When the lock bar 3 is between the separation position and the lock position, or when the lock bar 3 is in the lock position, the magnetism of the first magnet m1 is detected. It is supposed to turn off. Thereby, it can be detected that the lock bar 3 is in the separated position.

  As described above, according to the present embodiment, the first magnet m1 moving together with the lock bar 3 and the substrate 7 attached to the housing 2 are formed, and the lock bar 3 is separated by detecting the first magnet m1. Since the first detection means n1 capable of detecting the position and the case C for holding the substrate 7 are provided, the position (lock position or separation position) and state (the lock bar 3 is moved by the motor M) of the lock bar 3 The state in which the lock bar 3 is in the lock position despite being moved to the separated position) can be reliably detected. In the present embodiment, the first magnet m1 is attached to the slider 5. However, the first magnet m1 may be directly attached to the lock bar 3 so that the separated position can be detected by the first detection means n1.

  Further, as shown in FIG. 5, the first magnet m1 according to the present embodiment is held by the holding member a while being urged toward the case C by the urging means s1 including a coil spring, and the holding member a. At the same time, it is attached to the attachment portion 5c of the slider 5 so that the holding member a can slide relative to the case C when the lock bar 3 moves. The holding member a is made of a cylindrical member such as resin, and is assembled with the end abutting against the case C while holding the first magnet m <b> 1 inside. As the slider 5 and the lock bar 3 move. It can slide on the outer peripheral surface of the case C.

  Thus, the first magnet m1 is held by the holding member a while being urged toward the case C by the urging means s1, and the holding member a is moved with respect to the case C when the lock bar 3 is moved. Since the sliding is enabled, the biasing force of the biasing means s1 presses the first magnet m1 toward the case C side, that is, the first detection means n1 side, and the position of the first magnet m1 (that is, the lock bar 3) is set. While being able to detect more accurately, it can prevent that the 1st magnet m1 slides with respect to the case C, and wears because the holding member a slides with respect to the case C.

  In addition, a pair of second detection means (n2, n3) capable of detecting the magnetism of the second magnet m2 is attached to the substrate 7 according to the present embodiment. The second magnet m2 rotates together with the cam member 4 by being attached to the second gear member G2 as described above, and the second detection means (n2, n3) detects magnetism such as a Hall IC. It is possible to detect that the cam member 4 is in the non-operating position and the operating position by detecting the magnetism of the second magnet m2.

  That is, as shown in FIGS. 11 to 13, the second detection means (n2, n3) has a position facing the second magnet m2 when the cam member 4 is in the non-operation position (second detection means n2), As shown in FIG. 11, the cam member 4 is disposed at a position (second detection means n3) facing the second magnet m2 when the cam member is in the operating position. In addition, when the second detection means n2 detects and turns on the magnetism of the second magnet m2, and when the cam member 4 is in the operating position, the magnetism of the second magnet m2 is detected second as shown in FIG. The means n3 is detected and turned on.

  Thus, according to the present embodiment, the second magnet m2 that rotates together with the cam member 4 and the substrate 7 are formed, and the cam member 4 is brought into the non-operation position and the operation position by detecting the second magnet m2. Since the second detection means (n2, n3) capable of detecting the presence of the second magnet is provided, the position of the second magnet m2 (that is, the cam member 4) can be detected with high accuracy. In the present embodiment, the second magnet m2 is attached to the second gear member G2, but it is directly attached to the cam member 4 and the non-operating position and the operating position are set by the second detection means (n2, n3). You may make it detect.

  Further, as shown in FIGS. 9 and 11 to 13, the second magnet m <b> 2 according to the present embodiment is formed to extend by a predetermined dimension along the rotation direction of the cam member 4 (that is, along the rotation locus of the cam member 4). Arc-shaped). Thus, since the second magnet m2 is formed to extend by a predetermined dimension along the rotation direction of the cam member 4, the detection range by the second detection means (n2, n3) can be set wide, for example, the cam Even when the second magnet m2 does not stop at the specified position due to an error during rotation of the member 4, the position of the second magnet m2 (that is, the cam member 4) can be detected more reliably.

  Furthermore, the control means 10 according to the present embodiment can detect the voltage or current supplied to the motor M in the process in which the lock bar 3 moves from the separation position to the lock position, and can also detect the voltage or current supplied to the motor M. The overload of the motor M during energization can be detected based on the current. That is, when the motor M is energized and driven to move the lock bar 3 from the separated position to the lock position, the lock bar 3 cannot move to the lock position unless the lock bar 3 matches the locking hole Sa of the steering wheel S. Since electric power is supplied over a long period of time and an overload occurs in the motor M, according to the present embodiment, the overload can be detected and a problem can be avoided.

  Specifically, as shown in FIG. 15, the control means 10 is electrically connected to the motor M via the H bridge h1, and is also electrically connected to the resistor h2. The H bridge h1 is formed in the middle of the wiring that electrically connects the power source (battery mounted in the vehicle in the present embodiment) and the motor M, and can drive the motor M in the normal direction or the reverse direction. The resistor h2 is composed of a circuit and is connected to the H bridge h1 so that the resistance value changes with a change in voltage or current supplied to the motor M.

  With this configuration, when the lock bar 3 is moved from the separated position toward the lock position by supplying electric power to the motor M and performing forward rotation, the resistance value of the resistor h2 is set according to the voltage or current of the supplied power. Therefore, the control means 10 can detect the voltage or current supplied to the motor M by detecting the change in the resistance value, and if the detected voltage or current exceeds a predetermined threshold (that is, When the lock bar 3 does not reach the lock position for some reason), the motor M is determined to be overloaded.

  Then, when an overload of the motor M during energization is detected, the control means 10 according to the present embodiment cuts off the power supply from the power source (in the present embodiment, a battery mounted on the vehicle) to stop the motor M. After the motor is stopped, the motor M is reversely driven to move the lock bar 3 to the separated position. That is, when the overload of the motor M during energization is detected, the control means 10 drives the motor M in the reverse direction to rotate the first gear member G1 and the second gear member G2 in the reverse direction, thereby Is moved to the separated position.

  Further, the control means 10 according to the present embodiment is configured to stop the motor M on condition that the first detection means n1 detects the separated position of the lock bar 3 after the motor M is driven in reverse rotation. Thereby, when the control means 10 detects the overload of the motor M during energization, the first detection means n1 can detect that the lock bar 3 has returned to the separation position which is the initial position.

  Further, in the control means 10 according to the present embodiment, after the motor M is driven in reverse rotation, the first detection means n1 detects the separation position of the lock bar 3, and the second detection means n2 is the non-operation position of the cam member 4. The motor M is configured to stop on the condition that this is detected. As a result, when the control means 10 detects an overload of the motor M during energization, the lock bar 3 returns to the separated position, which is the initial position, and the cam member 4 returns to the non-operating position, which is the initial position. Can be detected by the first detection means n1 and the second detection means n2.

Next, control by the control means 10 according to the present embodiment will be described based on the flowchart of FIG.
First, the motor M is energized on the condition that a predetermined operation (for example, an operation of a portable operation means) is performed by the driver (S1). Since the motor M is driven forward by such energization, the voltage or current supplied to the motor M can be detected in the process in which the lock bar 3 moves from the separated position to the locked position. It is determined whether or not an overload of the motor M is detected based on the supplied voltage or current (S2).

  When the overload of the motor M is not detected in S2, the process proceeds to S3, and it is determined whether or not the lock bar 3 has moved to the lock position. At this time, when the second detection means n3 detects the second magnet m2, it is determined that the lock bar 3 has moved to the lock position. When it is determined in S3 that the lock bar 3 has moved to the lock position, the power supply to the motor M is cut off and the driving of the motor M is stopped (S4). If it is not determined in S3 that the lock bar 3 has moved to the locked position, the process returns to S1 and the motor M is continuously energized, and whether or not an overload is detected is determined in S2. Become.

  On the other hand, when an overload of the motor M is detected in S2, the process proceeds to S5, where the power supply to the motor M is immediately cut off and the driving of the motor M is stopped. Then, after the motor M is driven reversely in S6, it is determined in S7 whether or not the lock bar 3 is in the separated position. At this time, the first detection unit n1 detects the first magnet m1, and the second detection unit n2 detects the second magnet m2, so that the lock bar 3 is determined to be in the separated position. Yes. If it is determined in S7 that the lock bar 3 is in the separated position, the motor M is stopped in S8, and a series of controls are completed. If it is not determined in S7 that the lock bar 3 is in the separated position, the process returns to S6 and the reverse rotation of the motor M is continued.

  According to the above embodiment, the control means 10 can detect the voltage or current supplied to the motor M in the process in which the lock bar 3 moves from the separated position to the lock position, and the voltage or current supplied to the motor M can be detected. Since the overload of the motor M during energization can be detected based on the current, it is possible to detect the overload of the motor M during energization while suppressing the manufacturing cost. In particular, the control means 10 according to the present embodiment drives the motor M in the reverse direction so as to move the lock bar 3 to the separated position after stopping the motor M when an overload of the motor M during energization is detected. Therefore, when the overload of the motor M during energization is detected, the lock bar 3 can be returned to the separation position which is the initial position, and the subsequent control by the control means 10 can be performed smoothly.

  Further, according to the present embodiment, it is disposed between the lock bar 3 and the cam member 4 and moves according to the rotation of the cam member 4 to move the lock bar 3 between the separation position and the lock position. The cam member 4 is integrated with the slider 5 that can be moved between, the first gear member G1 that can be rotated by the driving force of the motor M, and the cam member 4 and receives the rotational force of the first gear member G1. And a second gear member G2 that can rotate about the rotation axis L, and the control means 10 drives the motor M in the reverse direction when the overload of the motor M during energization is detected, and thereby the first gear member. Since the G1 and the second gear member G2 are rotated in the opposite directions, when an overload of the motor M during energization is detected, the lock bar 3 is reliably and smoothly returned to the separated position, which is the initial position, and the subsequent control means 10 Can be controlled more smoothly Kill.

  In addition, in the present embodiment, since the rotation axis L of the cam member 4 is disposed on the extension line E in the direction from the lock position of the lock bar 3 toward the separated position, an impact or the like is applied to the lock bar 3. In this case, the impact or the like can be reliably received by the rotating shaft L of the cam member 4. Therefore, even when an impact or the like is applied to the lock bar 3, the steering lock state can be reliably maintained, and parts in the housing 2 can be prevented from being damaged by the applied impact or the like. In particular, since the rotation axis L of the cam member 4 according to the present embodiment is made of a metal shaft-like member fixed to the housing 2, the rotation axis of the cam member 4 can be reliably subjected to an impact applied to the lock bar 3. L can be received, and the steering lock state can be more reliably maintained.

  Furthermore, according to the present embodiment, the lock bar 3 is interposed between the cam member 4 and moved according to the rotation of the cam member 4 to move the lock bar 3 between the separation position and the lock position. The cam member 4 is integrated with the slider 5 that can be moved between, the first gear member G1 that can be rotated by the driving force of the motor M, and the cam member 4 and receives the rotational force of the first gear member G1. In addition, since the second gear member G2 that can rotate around the rotation axis L is provided, the driving force of the motor M can be more smoothly transmitted to the lock bar 3 by interposing the slider 5. The cam member 4 and the second gear member G2 are configured as separate members, so that a suitable material (for example, the cam member 4 is made of metal and the second gear member G2 is made of resin or the like) can be selected. it can.

  Although the present embodiment has been described above, the present invention is not limited to this. For example, the rotation shaft of the cam member is not disposed on the extension line in the direction from the lock position of the lock bar to the separation position, It may be different from the fixed metal shaft-like member. Further, the drive source is not limited to the motor M, and any other general-purpose device may be used as long as it can be driven by energization to rotate the cam member 4 between the non-operation position and the operation position. Good.

  The voltage or current supplied to the drive source in the process of moving the lock bar from the separated position to the lock position can be detected, and overload of the drive source during energization can be detected based on the voltage or current supplied to the drive source. As long as the steering lock device is provided with a control means that can be detected, the steering lock device can be applied to a device having a different external shape or a device to which another function is added.

DESCRIPTION OF SYMBOLS 1 Steering lock apparatus 2 Housing 3 Lock bar 4 Cam member 5 Slider 6 Return spring 7 Board | substrate 8 1st displacement prevention means 9 2nd displacement prevention means 10 Control means L Rotating shaft S Steering G1 1st gear member G2 2nd gear member C Case m1 1st magnet m2 2nd magnet n1 1st detection means n2, n3 2nd detection means

Claims (5)

A steering lock device for locking the steering of a vehicle,
A lock bar movable between a separated position separated from the steering of the vehicle and a locked position for locking the steering by locking the steering;
The lock bar can be moved by rotating between a non-actuated position and an actuated position around a rotation axis, and when the lock bar is in the non-actuated position, the lock bar is set as the separation position, and when in the actuated position, the A cam member having a lock bar as the lock position;
A drive source that can be driven by energization to rotate the cam member between the non-actuated position and the actuated position;
Control means capable of controlling the drive of the drive source;
A housing containing the lock bar, cam member and drive source;
And the control means can detect a voltage or a current supplied to the drive source in the process of moving the lock bar from the separated position to the lock position, and a voltage or a current supplied to the drive source. A steering lock device capable of detecting an overload of a drive source during energization based on an electric current.   The control means, when an overload of the drive source at the time of energization is detected, stops the drive source and then reversely drives the drive source to move the lock bar to a separated position. The steering lock device according to claim 1. A slider that is interposed between the lock bar and the cam member and moves according to the rotation of the cam member to move the lock bar between the separation position and the lock position;
A first gear member that can be rotated by a driving force of the driving source;
A second gear member that is integrated with the cam member and that can receive the rotational force of the first gear member and rotate about the rotation shaft together with the cam member;
And the control means rotates the first gear member and the second gear member in the reverse direction by driving the drive source in the reverse direction when an overload of the drive source during the energization is detected. The steering lock device according to claim 1 or 2, wherein the steering lock device is characterized. A first magnet that moves with the lock bar;
A first detection means formed on a substrate attached to the housing and capable of detecting that the lock bar is in a separated position by detecting the first magnet;
A case for holding the substrate;
The control means stops the drive source after the reverse drive of the drive source, on condition that the first detection means detects the separation position of the lock bar. The steering lock device according to any one of? A second magnet that rotates with the cam member;
Second detecting means formed on the substrate and capable of detecting that the cam member is in a non-operating position and an operating position by detecting the second magnet;
And the control means detects the separated position of the lock bar after the reverse drive of the drive source, and the second detection means detects the non-operating position of the cam member. The steering lock device according to claim 4, wherein the drive source is stopped on condition that the operation is performed.

Images