JP2013006542A - Electric steering lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric steering lock device that can enhance waterproofness with a simple constitution, without causing a cost increase.SOLUTION: This electric steering lock device 1 includes a lock member for checking rotation of a steering wheel, an electric actuator for moving the lock member, an internal connector 18 being an electric connection means with an external power source for supplying electric power to the electric actuator, a case 3 having an opening part opening downward in a state of being fixed to a steering column 51 for rotatably storing a steering shaft 50, and a housing 2 having a lid 4 for blocking up the opening part of the case 3. The lid 4 of the housing 2 is formed with a through-hole 4b that can connect the internal connector 18 and an external connector 25 continuing with the external power source.

Description

  The present invention relates to an electric steering lock device (ESL) for electrically locking the rotation of a steering wheel when a vehicle is parked.

  In recent years, some vehicles have an electric steering lock device for electrically locking the rotation of the steering wheel during parking for the purpose of preventing theft. This electric steering lock device detects, for example, when the driver turns off the engine start switch while the engine is operating, drives an electric actuator such as an electric motor, and moves the lock member by the electric actuator. By engaging the steering shaft, the rotation of the steering wheel is locked. When the driver turns on the engine start switch while the engine is stopped, this is detected and the electric actuator is driven, and the electric actuator moves the lock member. Thus, the engagement of the lock member with the steering shaft is released, and the steering wheel is unlocked to enable the steering operation.

  By the way, such an electric steering lock device includes a housing that is fixed to a steering column of a vehicle by bolts or the like, and the housing has an opening that opens downward when the housing is fixed to the steering column. A case and a lid for closing the opening of the case are provided. The housing contains a lock member, an electric actuator, a circuit board on which an electric circuit for controlling the electric actuator is disposed, and the like. Further, the electric steering device is provided with an internal connector which is an electrical connection means with an electric power source and a controller for supplying electric power and control signals to the electric actuator and the circuit board.

  With respect to such an electric steering lock device, Patent Document 1 discloses that a notch portion is formed on a side surface of a housing (a side surface positioned laterally with respect to the advancing and retreating direction of the lock bolt), and an internal connector is provided on an end surface of the notch portion. Has been proposed in which the internal connector is prevented from protruding from the housing, thereby preventing damage to the internal connector due to impact and improving the workability of connecting the external connector to the internal connector.

JP 2009-096299 A

  By the way, usually, the electric steering lock device is often fixed to the lower side of the steering column of the vehicle due to the installation space and the like. When adopting a configuration in which the electric steering lock device is disposed below the steering column and the external connector is connected to the internal connector disposed on the side of the housing as in the invention described in Patent Document 1, The harness of the external connector extending from the side of the steering lock device is bundled together with the harness of the surrounding electrical parts by a binding band provided on the steering column, so that the harness is directed toward the steering column located above the harness. Extend. The harness is routed along the steering column and connected to a host control unit, a power source, and the like disposed in the vicinity of the steering column.

  However, when the harness is routed as described above, the internal connector of the electric steering lock device and the external connector connected thereto are located below the binding portion of the harness by the binding band. There is a possibility that water drops generated by spilled drinks or condensation in the vehicle travel through the harness to reach the external connector and enter the electric steering lock device via the internal connector. When water droplets or the like enter the inside of the electric steering lock device in this way, there arises a problem that a short circuit or the like causes a failure of the electric steering lock device.

  In order to solve the above problem, an expensive waterproof connector, packing, or the like may be used. However, when these are used, another problem that the cost cannot be increased is generated.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an electric steering lock device that can improve waterproofness with a simple configuration without causing an increase in cost.

In order to achieve the above object, the invention according to claim 1
A locking member that prevents rotation of the steering shaft by engaging with the steering shaft of the vehicle;
An electric actuator that generates a driving force for moving the lock member;
An internal connector which is an electrical connection means with an external power source for supplying electric power to the electric actuator;
A case having an opening that opens downward in a state of being fixed to a steering column that rotatably stores the steering shaft; and a lid that closes the opening of the case; and at least the lock member and the inside A housing containing an electric actuator;
In the electric steering lock device with
A through-hole is formed in the lid of the housing to enable connection between the internal connector and the external connector connected to the external power source.

  According to a second aspect of the present invention, in the first aspect of the present invention, in the vehicle mounting state, a part of the harness led downward from the external connector connected to the internal connector has a U-shape upward. It is characterized in that a curved portion that is curved is formed.

According to a third aspect of the present invention, in the first or second aspect of the present invention, a circuit board in which an electric circuit for controlling the electric actuator is disposed in the housing can be inserted from the opening of the case. Forming the storage part,
The internal connector is integrally fixed to an end portion of the circuit board facing the through hole of the lid.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the through hole of the lid is a non-notched hole.

  According to the first aspect of the present invention, in the state where the electric steering lock device is attached to the steering column, the through hole is formed in the lid that covers the lower end opening of the housing case, and the internal connector is connected to the lid through the through hole. Because it is configured to be able to connect with the external connector, the internal connector and the external connector are located on the lower side of the electric steering lock device, and even if water drops move to the external connector along the harness connected to the external connector, Water drops or the like do not reach the internal connector located above the external connector, ensuring high waterproofness of the electric steering lock device and preventing the electric steering lock device from being broken due to a short circuit or the like. Further, since the through hole is formed in the lid of the housing, it is not necessary to provide a large notch in the case as in the prior art, and the strength of the case due to the notch is prevented from being lowered. Such an effect can be obtained by a simple configuration simply by changing the arrangement of the internal connectors, and it is not necessary to use an expensive waterproof connector or the like, so that an increase in the cost of the electric steering lock device can be suppressed.

  According to the second aspect of the present invention, in the state where the electric steering lock device is mounted on the vehicle, a portion of the harness led downward from the external connector connected to the internal connector is curved upward in a U shape. The electric steering lock device does not reach the external connector and the internal connector positioned above the bending portion against gravity due to the weight of the bending portion that has moved to the bending portion along the harness due to its own weight. High waterproofness is ensured.

  According to the third aspect of the present invention, since the internal connector is integrally fixed to the end portion of the circuit board accommodated in the housing portion that faces the through hole of the lid, the circuit board is removed from the opening of the case. After being inserted into the storage unit and stored in the storage unit, the lid and the internal connector can be easily assembled by matching the internal connector and the through-hole of the lid simply by covering the opening of the case with the lid. Adequacy is improved. In addition, since the electric steering lock device is secured with high waterproofness according to the first or second aspect of the invention, a seal member such as packing is provided in the gap between the internal connector (or external connector) and the through hole of the lid. This is unnecessary, and the number of parts can be reduced to simplify the structure and reduce the cost.

  According to the fourth aspect of the present invention, since the through hole of the lid is a non-notched hole (closed hole), a notch that causes stress concentration on the lid becomes unnecessary, and high strength can be ensured on the lid.

It is a perspective view which shows the attachment state of the electric steering lock apparatus which concerns on this invention. It is a bottom view of the electric steering lock device concerning the present invention. It is a longitudinal section showing the locked state of the electric steering lock device concerning the present invention. FIG. 4 is a sectional view taken along line AA in FIG. 3. 1 is an exploded perspective view of an electric steering lock device according to the present invention. It is the perspective view which looked at the case of the electric steering lock device concerning the present invention from the bottom side. It is a perspective view which shows the assembly | attachment point to the case of the circuit board of the electric steering lock apparatus which concerns on this invention.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a perspective view showing a mounting state of an electric steering lock device according to the present invention, FIG. 2 is a bottom view of the electric steering lock device, FIG. 3 is a longitudinal sectional view showing a locking state of the electric steering lock device, FIG. FIG. 5 is an exploded perspective view of the electric steering lock device, FIG. 6 is a perspective view of the case of the electric steering lock device viewed from the bottom side, and FIG. 7 is the electric steering lock. It is a perspective view which shows the assembly | attachment point to the case of the circuit board of an apparatus.

  The electric steering lock device 1 according to the present invention locks / unlocks the rotation of the steering shaft (steering wheel) 50 shown in FIG. 1 by electric drive. As shown in FIG. It is attached. The steering shaft 50 is rotatably inserted into the steering column 51. A steering wheel (not shown) is attached to the upper end of the steering shaft 50, and the lower end portion of the steering shaft 50 is a steering wheel (not shown). Connected to the gear box. When the driver rotates the steering wheel, the rotation is transmitted to the steering gear box via the steering shaft 50, and a rack shaft (not shown) provided in the steering gear box moves in the vehicle width direction. The movement is transmitted to left and right front wheels, which are steered wheels, via tie rods (not shown), and the front wheels are steered.

  Thus, the electric steering lock device 1 includes a housing 2 attached to the steering column 51. The housing 2 is made of a non-magnetic metal (for example, as shown in FIGS. 1 to 5). , Made of a magnesium alloy) and a metal lid 4 that closes the lower end opening of the case 3.

  The case 3 is formed in the shape of a rectangular box, and an arcuate recess 3a is formed in the upper portion thereof. A steering column 51 is fitted in the recess 3a as shown in FIG. The column 51 is fixed to the steering column 51 by an arcuate bracket 53 that is bound to the case 3 by two left and right bolts 52 (only one is shown in FIG. 1). Here, as shown in FIG. 5, circular pin holes 3 b (only one is shown in FIG. 5) into which the pins 5 are press-fitted are formed in the lower portions of the three side surfaces of the case 3.

  On the other hand, the lid 4 is formed in a rectangular flat plate shape, and on its inner surface (upper surface), as shown in FIG. 5, there are three block-shaped pinning portions 4A and three columnar cover pressing portions 4B. The bottomed cylindrical gear holding cylinder portion 4C, the rectangular arc-shaped motor pressing portion 4D and the pressing portion 4E are erected integrally, and one of the pressing portion 4E and the pinning portion 4A is provided. A pin-like substrate pressing portion 4a is integrally formed at each upper end. In addition, a rectangular through hole 4b (see FIG. 2) which is a non-notched hole (closed hole) is formed beside the motor pressing portion 4D of the lid 4.

  Here, the three pin fastening portions 4A are erected at locations corresponding to the positions of the pin holes 3b of the case 3, and the circular pin insertion holes 4c into which the pins 5 are press-fitted are provided. (Only one is shown in FIG. 5).

  Thus, as shown in FIGS. 3 and 4, the lid 4 is fitted into the inner periphery of the lower end of the case 3 so as to cover the lower end opening of the case 3 from below, and is formed on the side of the case 3. The pin 5 inserted into the three pin holes 3b (see FIG. 5) is fixed to the case 3 by being press-fitted into the respective pin insertion holes 4c formed in the three pin fastening portions 4A provided upright on the lid 4. The

  Incidentally, as shown in FIG. 6, the case 3 is formed with a lock member storage portion 3A, a substrate storage portion 3B, a motor storage portion 3C, and a motor output shaft arrangement portion 3D. The storage portion 3B communicates with each other by an elongated communication portion 3E extending in the vertical direction. And the guide block 3F extended in an up-down direction is protrudingly provided by the mutually opposing inner surface of case 3 which comprises the said board | substrate storage part 3B, and the edge part of the circuit board 15 mentioned later is hold | maintained at each guide block 3F. Substrate holding grooves 3c are formed in the vertical direction.

  As shown in FIG. 6, the rectangular concave motor housing 3C formed in the case 3 is formed with a stepped receiving surface 3d for receiving an end surface of an electric motor 13 described later as an electric actuator. The receiving surface 3d is integrally provided with two triangular ribs 3e for restricting the movement of the electric motor 13 in the thrust direction.

  Furthermore, the lock member 6 is housed in the lock member housing portion 3A (see FIG. 6) formed in the case 3 as shown in FIG. The lock member 6 includes a metal driver 7, which is a substantially cylindrical nonmagnetic material having a male screw portion 7 a engraved on the outer periphery of the lower end portion, and a plate-like shape housed in the driver 7 so as to be movable up and down. It is composed of a lock bolt 8. Here, the lock bolt 8 is formed with a long hole 8a that is long in the vertical direction, and the lock bolt 8 is connected to the driver 7 by a pin 9 that is inserted laterally into the long hole 8a. The pin 9 is inserted and held by being press-fitted into a pin insertion hole 7b that is formed in the driver 7 in a lateral direction.

  The lock bolt 8 is fitted in a rectangular lock bolt insertion hole 3f formed in the case 3 so as to be movable up and down, and is always upward (locked) by a spring 10 which is compressed between the screw 7 and the driver 7. The lock bolt 8 moves up and down together with the driver 7 when the lower portion of the long hole 8a of the lock bolt 8 is engaged with the pin 9 as shown in FIG.

  As shown in FIG. 5, a horizontally extending arm 7 </ b> A and a rectangular block-shaped detent 7 </ b> B are integrally formed at opposite positions on the upper outer periphery of the driver 7, and the arm 7 </ b> A is attached to the case 3. The formed communicating portion 3E (see FIG. 6) is accommodated so as to be movable up and down, and a magnet (not shown) is accommodated by press-fitting at the tip. The anti-rotation portion 7B of the driver 7 functions to prevent rotation of the driver 7 by engaging with an engagement groove (not shown) formed in the case 3.

  Further, a cylindrical gear member 11 is rotatably accommodated in the lock member accommodating portion 3A (see FIG. 6) formed in the case 3, and a lower outer periphery of the gear member 11 is accommodated. Is held rotatably by the gear holding cylinder portion 4C provided upright on the inner surface (upper surface) of the lid 4. And the worm gear 11a is formed in the lower outer periphery of this gear member 11, and the internal thread part 11b is formed in the inner periphery.

  The lower part of the driver 7 is inserted into the gear member 11, and the male screw part 7 a formed on the outer periphery of the lower part of the driver 7 is the female screw part formed on the inner periphery of the gear member 11. 11b meshes. A spring 12 is compacted between a driver 7 and a cylindrical spring receiver 4d erected at the center of the gear holding cylinder 4C of the lid 4, and a lock member 6 (driver 7 and lock bolt). 8) is always biased upward (in the locking direction) by the spring 12.

  5 is housed in a horizontally placed state in the motor housing portion 3C (see FIG. 6) formed in the case 3, and a small-diameter worm is placed on the output shaft 13a of the electric motor 13. 14 is formed. The electric motor 13 generates a driving force for moving the lock member 6, and an end portion of the output shaft 13 a is the motor output shaft arrangement portion 3 </ b> D (see FIG. 6) formed in the case 3. ) And the worm 14 formed on the output shaft 13 a meshes with the worm gear 11 a formed on the outer periphery of the gear member 11. Here, the worm 14 and the worm gear 11 a constitute a drive mechanism that converts the rotational force of the output shaft 13 a of the electric motor 13 into the advance / retreat force of the lock member 6.

  On the other hand, as shown in FIGS. 3 and 4, the circuit board housing portion 3B formed in the case 3 stores a resin circuit board 15 provided with an electric circuit in a vertically standing state. The circuit board 15 is inserted into the board holding grooves 3c (see FIG. 6) formed in the guide blocks 3F provided at the opposite positions on the inner surface of the case 3, so that the surface of the circuit board 15 is locked. 6 is fixed and held in the case 3 so as to be parallel to the operation direction 6.

  Here, as shown in FIG. 5, the magnetic force of the magnet (not shown) press-fitted and held in the arm 7A of the driver 7 can be detected at a position corresponding to the lock and unlock positions of the surface of the circuit board 15. First and second Hall elements 16 and 17 are provided as magnetic detection elements. An internal connector 18 is integrally fixed to the lower end of the circuit board 15 (the end facing the through hole 4b of the lid 4). Further, as shown in FIGS. 4 and 5, resin positioning members 21 that are long in the vertical direction are attached to both ends in the width direction of the back surface of the circuit board 15. As shown in FIG. 5, the internal connector 18 is provided with two upper and lower motor power supply terminals 20 connected to the electric motor 13 in the horizontal direction.

  By the way, in the present embodiment, the communication portion 3E that connects the lock member storage portion 3A and the substrate storage portion 3B formed in the case 3 includes a magnet (not shown) press-fitted into the arm 7A of the driver 7. A space facing the substrate 15 accommodated in the substrate accommodating portion 3B is formed. Resin covers 22 and 23 are disposed between the worm 14 and the lid 4 and between the lock member 6 and the substrate 15, respectively. The covers 22 and 23 are disposed on the lid 4 and the substrate 15 side. It serves to prevent the splashing of grease.

  Next, an assembling procedure of the electric steering lock device 1 will be described.

  As shown in FIG. 7, the electric steering lock device 1 is assembled so that the case 3 is turned upside down so that the lower end opening of the case 3 faces upward. 6, the gear member 11, the cover 23, and the like are accommodated.

  Next, as shown in FIG. 7, after the electric motor 13 is assembled to the circuit board 15, the circuit board 15 is inserted into the case 3 from the lower end opening of the case 3 with the upper end thereof facing down. Specifically, when the left and right end edges of the circuit board 15 are fitted into the board holding grooves 3 c (see FIG. 6) of the case 3, the positioning members 21 attached to the left and right sides of the back surface of the circuit board 15 are used for each board of the case 3. When the circuit board 15 is pushed down as it is fitted into the holding groove 3c, the circuit board 15 is stored in the board storage portion 3B (see FIG. 6) in the case 3 along the board holding groove 3c.

  After the circuit board 15 is stored in the board storage portion 3B in the case 3 as described above, the cover 22 and the spring 12 are disposed at the lower end of the gear 11 and finally the lower end opening of the case 3 is closed by the lid 4. That is, the lid 4 is fitted into the lower end opening of the case 3, the pins 5 are inserted from the three pin holes 3 b formed in the lower end side portion of the case 3, and each pin 5 is formed in the pinning portion 4 </ b> A of the lid 4. 1 to 4, the lid 4 is attached to the case 3 as shown in FIGS. 1 to 4, and the lower end opening of the case 3 is closed by the lid 4, and the assembly of the electric steering lock device 1 is completed. To do. At this time, by accommodating the electric motor 13 in the motor accommodating portion 3C, the triangular rib 3e deforms when the triangular rib 3e comes into contact with the front portion from which the output shaft 13a of the electric motor 13 projects, and the electric motor is deformed. Thirteen thrust backlashes are prevented. Thereby, since the electric motor 13 is connected to the motor power supply terminal 20 of the internal connector 18, rattling of the electric motor 13 is prevented.

  In the state where the lid 4 is attached to the case 3 and the lower end opening of the case 3 is closed by the lid 4 as described above, the internal connector integrally fixed to the lower end of the circuit board 15 housed in the case 3 18 penetrates the through-hole 4b formed in the lid 4, and the front-end | tip part protrudes below from the bottom face of the lid 4 as shown in FIG.1 and FIG.3. The internal connector 18 includes an external connector 25 connected to an end of a harness 24 that extends from a power source (battery) (not shown) mounted on the vehicle body and a host control unit (hereinafter referred to as “ECU”). As shown in FIG. 1, the first and second Hall elements 16 and 17 (see FIG. 5) that are inserted from below and connected to the circuit board 15 are electrically connected to the ECU via the harness 24. At the same time, electric power is supplied to the electric motor 13 from a power source (battery) (not shown) via the harness 24 and the motor power supply terminal 20 (see FIG. 5).

  Here, as shown in FIG. 1, the harness 24 is routed along a steering column 51, and a part thereof is supported by a binding band 27 fixed to the steering column 51 with a screw 26. A curved portion 24A that is curved in a U shape is formed at an end portion that passes through the binding band 27 of the harness 24 and extends in the direction of the electric steering lock device 1 (rear side of the vehicle). That is, the end portion of the harness 24 that passes through the binding band 27 and extends rearward of the vehicle once falls from the steering column 51 portion, then is folded back into a U shape, and its tip is connected to the external connector 25. ing.

  Next, the operation (lock / unlock operation) of the electric steering lock device 1 configured as described above will be described with reference to FIG.

  In a state where the engine (not shown) is stopped, as shown in FIG. 3, the lock bolt 8 of the lock member 6 is at the upper limit lock position, and the upper end portion thereof is recessed from the lock bolt insertion hole 3f of the case 3 to the recess 3a. 1 and engages with the steering shaft 50 shown in FIG. 1 to lock the rotation of the steering shaft 50. In this locked state, the steering wheel (not shown) cannot be rotated, thereby Theft is prevented. At this time, the magnet housed in the arm 7 </ b> A of the lock member 6 is positioned in the vicinity of the upper first hall element 16 provided on the circuit board 15.

  When the driver turns on an unillustrated engine start switch from the above state, the ECU detects this and transmits an unlock signal to the electric steering lock device 1. Then, the control part provided in the circuit board 15 of the electric steering lock device 1 supplies power to the electric motor 13 and starts it.

  When the electric motor 13 is started as described above, the rotation of the output shaft 13a is decelerated by the worm 14 and the worm gear 11a, the direction is changed to a right angle and transmitted to the gear member 11, and the gear member 11 is rotated. Therefore, the driver 7 in which the male screw portion 7 a that is screwed into the female screw portion 11 b formed on the inner periphery of the gear member 11 is moved down against the biasing force of the spring 12. When the driver 7 moves down in this way, the arm 7A formed integrally with the driver 7 and the lock bolt 8 connected to the driver 7 by the pin 9 move down integrally.

  Thus, when the lock bolt 8 moves down and reaches the lower limit unlock position as described above, the upper end portion of the lock bolt 8 is retracted into the lock bolt insertion hole 3 f of the case 3. 8 is disengaged from the steering shaft 50, the steering shaft 50 is unlocked and unlocked, and the driver can rotate the steering wheel.

  When the arm 7A of the driver 7 moves down, the magnet housed at the tip of the arm approaches the second Hall element 17 below the circuit board 15, and the magnetic force of the magnet is detected by the second Hall element 17. The As a result, it is detected that the lock bolt 8 has moved to the unlock position, and the control unit of the circuit board 15 stops driving the electric motor 13 and unlocks it in order to transmit an unlock completion signal to the ECU on the vehicle body side. The state is maintained and the vehicle can travel.

  Then, when the vehicle stops and the driver turns off the engine by turning off the engine start switch, the ECU detects this and transmits a lock signal to the electric steering lock device 1. Then, the control unit provided on the circuit board 15 of the electric steering lock device 1 energizes the electric motor 13 to reverse the output shaft 13a of the electric motor 13.

  When the output shaft 13a of the electric motor 13 is reversed as described above, the rotation is transmitted to the gear member 11 via the worm 14 and the worm gear 11a, and the driver 7 is moved upward because the gear member 11 is reversed. The lock bolt 8 connected to the driver 7 by the arm 7A and the pin 9 formed integrally with the driver 7 moves up.

  Thus, when the lock bolt 8 moves upward as described above and reaches the upper limit lock position as shown in FIG. 3, the upper end portion of the lock bolt 8 enters the recess 3a from the lock bolt insertion hole 3f of the case 3. Because of the protrusion, the lock bolt 8 is engaged with the steering shaft 50, the rotation of the steering shaft 50 is locked, and the steering wheel cannot be rotated. In addition, when engagement with the engagement groove | channel of the steering shaft 50 of the lock bolt 8 is not performed favorably, the range which the pin 9 can move relatively within the long hole 8a formed in this lock bolt 8 is. Thus, since the lock bolt 8 moves downward against the biasing force of the spring 10, an excessive load does not act on the lock bolt 8.

  When the arm 7A of the driver 7 moves up, the magnet accommodated at the tip of the arm approaches the first hall element 16 above the circuit board 15, and the magnetic force of the magnet is detected by the first hall element 16. The As a result, it is detected that the lock bolt 8 has moved to the lock position, and the control unit of the circuit board 15 stops driving the electric motor 13 and transmits a lock completion signal to the ECU on the vehicle body side. The locked state is maintained, which prevents the vehicle from being stolen.

  As described above, in the electric steering lock device 1 according to the present invention, when the electric steering lock device 1 is attached to the steering column 51, the through hole 4 b is formed in the lid 4 that covers the lower end opening of the case 3 of the housing 2. Is formed so that the internal connector 18 and the external connector 25 can be connected via the through-hole 4b. Therefore, the internal connector 18 and the external connector 25 are positioned below the electric steering lock device 1 and externally connected. Even if water droplets or the like move to the external connector 25 along the harness 24 connected to the connector 25, the water droplets or the like do not reach the internal connector 18 positioned above the external connector 25, and the electric steering lock device 1 is high. Waterproofness is ensured and failure of the electric steering lock device 1 due to a short circuit or the like is prevented. . In particular, in the present embodiment, a curved portion 24A that curves in a U-shape upward is formed in a part of the harness 24 that is led downward from the external connector 25 connected to the internal connector 18. Water droplets or the like that have moved along the harness 24 to the bending portion 24A do not reach the external connector 25 and the internal connector 18 positioned above the bending portion 24A against gravity, and the water droplets or the like are not bent by the bending portion of the harness 24. Since the electric steering lock device 1 falls from 24A, high waterproofness is ensured.

  Further, in the electric steering lock device 1 according to the present invention, since the through hole 4b is formed in the lid 4 of the housing 2, there is no need to provide a large notch in the case 3 as in the prior art, and the strength of the case 3 due to the notch. Reduction is prevented.

  Thus, the above effect can be obtained by a simple configuration that only changes the arrangement of the internal connector 18, and it is not necessary to use an expensive waterproof connector or the like, so that an increase in the cost of the electric steering lock device 1 can be suppressed. it can.

  Further, in the present embodiment, the internal connector 18 is integrally fixed to the end portion of the circuit board 15 that is accommodated in the board accommodating portion 3B formed in the case 3 of the housing 2 and that faces the through hole 4b of the lid 4. Therefore, after the circuit board 15 is inserted into the case 3 from the lower end opening of the case 3 and stored in the board storage portion 3B, the inner connector 18 and the lid are simply covered with the lid 4 at the lower end opening of the case 3. Accordingly, the lid 4 and the internal connector 18 can be easily assembled to correspond to the four through-holes 4b, and the assemblability of these can be improved.

  Furthermore, as described above, as a result of ensuring high waterproofness in the electric steering lock device 1 according to the present invention, it is necessary to provide a seal member such as packing in the gap between the internal connector 18 and the through hole 4b of the lid 4. In addition, the number of parts can be reduced to simplify the structure and reduce the cost.

  In addition, in the present embodiment, since the through hole 4b of the lid 4 is a non-notched hole (closed hole), a notch that causes stress concentration on the lid 4 is not required, and high strength can be secured to the lid 4. The effect that it is possible is also acquired.

  In the above embodiment, a part of the internal connector 18 passes through the through hole 4b of the lid 4 and is exposed to the outside. However, the internal connector 18 does not pass through the through hole 4b of the lid 4, A configuration in which the external connector 25 is connected to the internal connector 18 through the through-hole 4b of the lid 4, or the internal connector 18 is disposed outside the housing 2, and a connecting portion to the internal connector 18 is a through-hole of the lid 4. You may employ | adopt the structure which penetrates 4b.

  In the above embodiment, the electric motor 13 is employed as the electric actuator for moving the lock member 6. However, the present invention is not limited to this, and for example, an actuator that moves the lock member 6 using an electromagnetic solenoid. It may be used as an electric actuator.

DESCRIPTION OF SYMBOLS 1 Electric steering lock device 2 Housing 3 Case 3A Case lock member storage part 3B Case board storage part 3C Case motor storage part 3D Case motor output shaft arrangement part 3E Case communication part 3F Case guide block 3a Recess 3b Case pin hole 3c Case substrate holding groove 3d Case receiving surface 3e Triangular rib 3f Case lock bolt insertion hole 4 Lid 4A Lid pinning part 4B Lid cover pressing part 4C Lid gear holding tube part 4D Lid motor pressing part 4E Lid pressing part 4a Lid board pressing part 4b Lid through hole 4c Lid pin insertion hole 4d Lid spring holder 5 Pin 6 Lock member 7 Driver 7A Driver arm 7B Driver detent part 7a Screwdriver screw Part 7b Pin insertion hole of driver 8 Lock bolt 8a Long hole of lock bolt 9 Pin 10 Spring 11 Gear member 11a Worm gear 11b Female member screw part 12 Spring 13 Electric motor (electric actuator)
13a Electric motor output shaft 14 Worm 15 Circuit board 16, 17 Hall element 18 Internal connector 20 Motor power supply terminal 21 Positioning member 22, 23 Cover 24 Harness 24A Harness curved portion 25 External connector 26 Screw 27 Binding band 50 Steering shaft 51 Steering Column 52 Bolt 53 Bracket

Claims (4)

A locking member that prevents rotation of the steering wheel by engaging the steering shaft of the vehicle;
An electric actuator that generates a driving force for moving the lock member;
An internal connector which is an electrical connection means with an external power source for supplying electric power to the electric actuator;
A case having an opening that opens downward in a state of being fixed to a steering column that rotatably stores the steering shaft; and a lid that closes the opening of the case; and at least the lock member and the inside A housing containing an electric actuator;
In the electric steering lock device with
An electric steering lock device characterized in that a through hole is formed in the lid of the housing to enable connection between the internal connector and an external connector connected to the external power source.   2. A curved portion that curves upward in a U-shape is formed in a part of a harness that is led downward from the external connector connected to the internal connector in a vehicle-mounted state. The electric steering lock device described. In the housing, a housing part is formed in which a circuit board on which an electric circuit for controlling the electric actuator is arranged can be inserted from the opening of the case,
3. The electric steering lock device according to claim 1, wherein the internal connector is integrally fixed to an end portion of the circuit board facing the through hole of the lid. The electric steering lock device according to claim 1, wherein the through hole of the lid is a non-notched hole.

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