JP2017171189A - Turning direction indicating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a turning direction indicating device that reduces collision noise emitted from a cam body and has silent operation sound relating to a turning direction indicating device mainly used for various control of a vehicle.SOLUTION: An impact absorption part 1B is disposed in an opening part 1A facing a rear cam part 8E on an opposite side to a direction where the cam body 8 is pressed by an urging spring 10 in the opening part 1A of a first cover 1, thereby reducing the collision noise emitted from the cam body 8 and providing the turning direction indicating device having silent operation sound.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a turning direction indicating device which is disposed mainly in the vicinity of a steering wheel (hereinafter referred to as steering) of an automobile and turns on and off a turn signal lamp and the like by operation of an operation lever.

  2. Description of the Related Art In recent years, a turning direction indicating device that turns on and off a turn signal lamp and the like by operating an operation lever in the vicinity of a steering wheel of an automobile is required to have a quiet operation sound during operation.

  As such a conventional turning direction indicating device, for example, a configuration as shown in Patent Document 1 is known. In this turning direction indicating device, a substantially box-shaped cover with a lower opening, an operating body accommodated in the cover and held so as to be swingable, and held at one end of the operating body so as to be swingable and protrude outward. An operating lever, a cam body held between the cover and the operating body so as to be rotatable and movable in a predetermined direction, and both end portions are locked by locking portions provided on the lower surface of the cover, and an intermediate portion is the cam body. An urging spring that elastically urges the cam body and a switch contact portion that performs electrical contact and separation in accordance with a rotation operation of the operating body and a swinging operation of the operation lever are provided. Then, by providing a plurality of protrusions on the upper surface of the cam body and interposing grease between the protrusions and the cover, the operation speed of the cam body is reduced, and as the cam body rotates, It is disclosed to reduce a collision sound with a releasing body that collides.

  In such a turning direction indicating device, the rear cam portion 101A of the cam body 101 protrudes outward from the opening portion 100A of the rear portion of the cover 100 as shown in the cross-sectional view of the main part of FIG. When the rear cam portion 101A moves to a position where it comes into contact with the cancel cam 111 along with the rotation of the operating body 102, the cam body 101 is rotated and biased by the bias spring 103 as the cancel cam 111 rotates. Collide with 104. At this time, also in the direction opposite to the lower surface direction of the cover 100 where the cam body 101 is pressed by the biasing spring 103, the cam body 101 resists the pressing force of the biasing spring 103 and the rear cam portion 101A. The rear cam portion 101A collides with the opposing portion of the opening portion 100A, and a collision sound is likely to be generated.

JP 2011-111110 A

  In the conventional turning direction indicating device, the rear cam of the cam body 101 in the direction opposite to the direction in which the cam body 101 is pressed by the biasing spring 103 in accordance with the collision between the cam body 101 and the release body 104. There was a problem that the part 101A jumped up against the pressing force of the biasing spring 103 and collided with the opening 100A facing to generate a collision sound.

  The present invention solves such a conventional problem, reduces the collision sound with the opening of the cover due to the jumping of the rear cam part of the cam body with a simple structure, and indicates a quiet turning direction of the operation sound. An object is to provide an apparatus.

  In order to achieve the object, the present invention is disposed in the vicinity of a cancel cam that rotates in conjunction with the rotation of the steering shaft, and is disposed opposite to the first cover with one surface open. The first cover and the second cover are rotatable about the first axis from the neutral position to the first operation position or the second operation position in accordance with the operation of the second cover and an operation lever provided at one end. Between the actuating body housed between the second cover and the actuating body, and is held rotatably about a second axis disposed parallel to the first axis, and the second axis A second cam shaft that is held so as to be substantially linearly movable in a predetermined direction orthogonal to the first cam body, and a rear cam portion provided on the rear portion projects outwardly from an opening provided on a predetermined direction side of the first cover; The cam body is locked to the facing surface of the second cover facing the one cover and urges the cam body outward. An urging spring for pressing the cam body is provided on the opposing surface, and the rear cam portion of the cam body moves to a position where it abuts the cancel cam in a state where the operating body is located at the first or second operation position. A turning direction indicating device that outputs a detection signal in response to a turning operation, wherein the biasing spring is opposite to the direction in which the urging spring presses the cam body at the opening of the first cover, facing the rear cam portion. A turning direction indicating device is configured by disposing an impact absorbing portion.

  With such a configuration, when the rear cam part springs up while the cam body is urged and pressed, the impact is absorbed by the impact absorbing member disposed opposite the rear cam part, so that the collision noise is reduced. Is done.

  Therefore, there is an effect that a turning direction indicating device with a quiet operation sound can be obtained.

  As described above, according to the present invention, it is possible to obtain an advantageous effect that it is possible to realize a turning direction indicating device with a simple configuration that reduces the collision sound generated by the cam body and quiets the operation sound.

Sectional drawing of the turning direction instruction | indication apparatus by one embodiment of this invention 1 is an exploded perspective view of a turning direction indicating device according to an embodiment of the present invention. The principal part bottom view of the turning direction instruction | indication apparatus by one embodiment of this invention The principal part bottom view of the turning direction instruction | indication apparatus by one embodiment of this invention Explanatory drawing of operation | movement of the turning direction instruction | indication apparatus by one embodiment of this invention Sectional drawing of the turning direction instruction | indication apparatus by other embodiment of this invention Sectional view of a conventional turning direction indicating device

  1 is a cross-sectional view of a turning direction indicating device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view, and FIG. 3 is a bottom view of a main part in a state where a first cover, an operating body, and a releasing body are combined. 4 and 4 are bottom views showing a state where the cam body 8 and the biasing spring 10 are combined with the bottom view of FIG.

  1 and 2, arrow A is upward, arrow B is downward, arrow C is forward, arrow D is backward, arrow E is left, and arrow F is right. Each direction is shown.

  In the figure, the first cover 1 is substantially box-shaped, the lower surface is open, and a shaft support portion (not shown) that is recessed upward is provided on the lower surface of the front portion. The upper shaft portion 2A of the operating body 2 is pivotally supported by the shaft support portion of the first cover, and the operating body 2 is horizontally moved around the first axis C1 composed of the shaft portion 2A and the shaft support portion of the first cover. The first cover 1 is rotatably accommodated. The first cover 1 is made of synthetic resin such as polyoxymethylene (hereinafter referred to as POM) or polyamide (hereinafter referred to as PA).

  An opening 1A is formed on the side surface of the rear portion of the first cover 1, and a rear cam portion 8E of a cam body 8 described later protrudes outward through the opening 1A. Further, the opening 1A has a shape in which the lower part is opened and the upper part of the rear cam part 8E is opposed to the upper part of the opening 1A, which is opposed to the upper surface of the rear cam part 8E. An impact absorbing portion 1B is provided. In particular, the thermoplastic elastomer can be molded integrally by two-color molding with respect to POM, PA, or the like used as the base material of the first cover 1, and thus is preferable in terms of manufacturability and cost.

  As shown in FIGS. 1 and 2, the impact absorbing portion 1B is an upper edge portion of the opening portion 1A, and includes a two-colored portion covered with a substantially L shape including the lower end surface facing the upper surface of the rear cam portion 8E. It is formed by molding or adhesion. The impact absorbing portion 1B may be formed only in a predetermined thickness portion of the lower end surface where the upper surface of the rear cam portion 8E of the opening portion 1A is opposed.

  The operating lever 3 has a substantially cylindrical shape, the root is held by the operating body 2, and extends in the forward direction. The operating lever 3 and the actuating body 2 are accommodated in the first cover 1 so as to be integrally rotatable.

  The moderation spring 4A and the moderation pin 4B are inserted into the storage hole 2B of the operating body 2, and the moderation pin 4B elastically contacts the moderation cam portion (not shown) formed inside the first cover 1 facing the moderation portion. Is formed. When the control lever 3 is operated to the left and right by the moderation portion, the control lever 3 is operated with a sense of moderation through the operating body 2 to the neutral position, the first operation position in the left direction, or the second operation position in the right direction. It is held in the rotated position.

  The release body 5 is substantially U-shaped, and the release protrusions 5A protrude rearward from both ends, and holding springs 6A and balls 6B are accommodated in the rear holes. Further, the ball 6B is elastically contacted with the holding recess 2C of the opposing working body 2, and as shown in FIG. 3, the releasing body 5 is disposed substantially in the middle of the lower surface of the working body 2 and can move in the left-right direction with a predetermined load or more. Is held in.

  The holding case 7 has an upper opening, and the lower surface of the operating body 2 is rotatably supported on the first axis C1, that is, coaxially with the shaft portion 2A, by a bearing portion 7A of a substantially semicircular rib. In the holding case 7, there are a switch part (not shown) for outputting a detection signal which is a predetermined switch signal by electrical contact and separation according to the rotation of the operating body 2, and various electronic components (not shown). A mounted wiring board (not shown) is accommodated.

  The cam body 8 is provided with a first shaft portion 8B that protrudes upward on the upper surface of a substantially rectangular and planar base portion 8A, and a second shaft portion 8C that protrudes downward on the lower surface of the base portion 8A. The first shaft portion 8B and the second shaft portion 8C are disposed on the same second shaft center C2, and the second shaft center C2 is disposed in parallel with the first shaft center C1 of the operating body 2. A front cam portion 8D and a rear cam portion 8E are formed so as to protrude from the front portion of the cam body 8, and an engagement recess 8F is formed between the first shaft portion 8B and the front cam portion 8D. A recess 8G is provided inside the base portion 8A and the rear cam portion 8E, and the mass of the rear cam body 8 is reduced from the engagement concave portion 8F.

  The cam body 8 is placed on the upper surface of the lower second cover 9, and grease having an appropriate viscosity is interposed between the cam body 8 and the upper surface of the second cover 9.

  The cam body 8 is made of an insulating synthetic resin such as polyoxymethylene (hereinafter referred to as POM).

  The second cover 9 is open at the top, and is provided with an elongated guide groove 9A extending in the front-rear direction perpendicular to the second axis C2 and recessed downward on the upper surface. The second shaft portion 8C of the cam body 8 is engaged with the guide groove 9A, and the cam body 8 is held by the second cover 9 so as to be movable in the front-rear direction and rotatable about the second axis C2. The second cover 9 is made of a synthetic resin such as POM or PA.

  The urging spring 10 is a coil spring made of a metal wire, and both end portions are locked to a locking portion 9B provided on the upper surface of the second cover 9 at positions spaced apart from the guide groove 9A at substantially equal intervals. As shown in the bottom view of FIG. 4, the substantially middle portion of the urging spring 10 is engaged with the engagement recess 8 </ b> F between the base portion 8 </ b> A of the cam body 8 and the front cam portion 8 </ b> D, and the cam body 8 is moved backward. The cam body 8 is pressed toward the upper surface side of the second cover 9.

  In this state, the first shaft portion 8B of the cam body 8 abuts against the side wall of the mountain-shaped holding cam 2D whose center projects forward in the vicinity of the rear portion of the operating body 2, and the rear cam portion 8E is an opening portion. It passes through 1A and protrudes toward the cancel cam 11.

  Further, as shown in FIG. 1, the gap in the vertical direction between the opening 1A and the rear cam portion 8E facing the opening 1A is set as small as possible so that foreign matters such as dust do not enter.

  The operating body 2, the releasing body 5, the holding case 7, the cam body 8, the urging spring 10 and the like are accommodated between the first cover 1 and the second cover 9, and the operation lever 3 is swung in the left-right direction. The turning direction indicating device 50 is configured such that a predetermined detection signal is output from the switch unit in accordance with the rotation of the operating body 2 accompanying the operation.

  The turning direction indicating device 50 configured as described above is mounted with the operation lever 3 protruding outwardly below a steering (not shown) in front of the driver's seat in the automobile. As shown in FIG. 4, a plurality of substantially arc-shaped cancel cams 11 interlocking with the rotation of a steering shaft (not shown) are disposed in the vicinity of the rear of the opening 1A, and the rear cam of the cam body 8 The part 8E passes through the opening 1A of the first cover 1 and protrudes outward. Further, a lead wire (not shown) for external connection is connected to a connector part (not shown) of the wiring board, and the switch part etc. is electrically connected to an electronic circuit (not shown) of the vehicle. .

  In the above configuration, as shown in FIG. 5A, when the operation lever 3 is held in the neutral position and the steering is also in the neutral position, the cam body 8 is moved backward in the direction of the cancel cam 11 by the biasing spring 10. The first shaft portion 8B is in elastic contact with the substantially triangular apex portion of the holding cam 2D. The rear cam portion 8E is located at a non-abutting position away from the rotation trajectory of the cancel cam 11, and the front cam portion 8D is located substantially in the middle of the opposing release protrusions 5A at both ends of the release body 5. .

  For example, when the operation lever 3 is swung clockwise in the clockwise direction when turning the vehicle to the right, as shown in FIG. The actuator 2 is rotated together with the operating body 2 around the portion 2A (first axis C1), and is held by the moderation unit at the first operating position where the operating body 2 is rotated a predetermined angle clockwise.

  Similarly, when the operation lever 3 is rotated counterclockwise in the left direction, the operating body 2 is held by the moderation portion at the second operation position rotated counterclockwise by a predetermined angle from the neutral position. It has become.

  When the operating body 2 is held at the first operating position, the cam body 8 has the first shaft portion 8B slidingly sliding on the inclined surface from the apex portion of the holding cam 2D to the vicinity of one end of a substantially triangular shape. While moving, the second shaft portion 8C moves backward along the guide groove 9A.

  At this time, the rear cam portion 8E of the cam body 8 is retracted to the contactable position in the rotation track of the cancel cam 11, and the front end portion of the front cam portion 8D is the inner surface of the right release protrusion 5A. Proximity to.

  Further, as the operating body 2 rotates, the switch portion housed in the holding case 7 is electrically connected and separated, and the right turn signal is transmitted via the electric circuit of the vehicle by the detection signal which is the switch signal. The lamp flashes.

  Next, when the steering wheel is turned clockwise in order to turn the automobile to the right, as shown in FIG. 5 (c), the cancel cam 11 interlocked with the steering rotates clockwise, After coming into contact with the rear cam portion 8E of the cam body 8, the cam body 8 rotates counterclockwise around the second axis C2 and rotates clockwise due to the twist of the biasing spring 10 engaged with the engagement recess 8F. The front cam portion 8D moves away from the release protrusion 5A while increasing the urging force.

  Further, when the steering is continuously rotated clockwise, as shown in FIG. 5D, the rear cam portion 8E moves away from the cancel cam 11 with which the rear cam portion 8E is in contact, and the cam body 8 is rotated clockwise by the cancel cam 11. The rotation restriction is canceled. Then, the cam body 8 is urged to rotate clockwise by the urging spring 10, and the front cam portion 8 </ b> D collides with the inner surface of the release protrusion 5 </ b> A on the right side of the release body 5.

  At this time, with the collision between the front cam portion 8D and the release protrusion 5A, the rear cam portion 8E of the cam body 8 easily jumps upward, and a collision occurs between the rear cam portion 8E and the upper edge portion of the opening 1A. . That is, the biasing spring 10 engaged with the engaging recess 8F presses the cam body 8 toward the upper surface of the second cover 9 at a position near the front of the first shaft portion 8B and deviated toward the front of the cam body 8. Therefore, the rear cam portion 8E located rearward from the first shaft portion 8B is likely to jump up.

  However, since the impact absorbing portion 1B is provided at the upper edge portion of the opening 1A, the impact of the rear cam portion 8E is absorbed by the impact absorbing portion 1B, and the collision sound when the collision occurs is reduced. The shock absorbing portion 1B is made of a material having a relatively high coefficient of friction such as a thermoplastic elastomer or rubber. Usually, the cam body 8 is separated from the shock absorbing portion 1B with a predetermined gap. There is no problem in the operation of the cam body 8 due to the frictional resistance with the impact absorbing portion 1B in the rotation or movement of the body 8.

  Further, the cam body 8 is provided with a recess 8G on the inner side of the base 8A and the rear cam part 8E, and the mass of the rear cam body 8 is reduced from the engagement concave part 8F with which the urging spring 10 is elastically contacted. For this reason, the collision energy when the rear cam portion 8E collides with the shock absorbing portion 1B is smaller than that when the recess portion 8G is not formed, so that the collision sound is further reduced and the operation sound is quieter. It will be something.

  Further, when the turning of the automobile is finished and the steering is returned to the neutral position, if the steering is rotated counterclockwise opposite to the right direction, the cancel cam 11 is counteracted from the state shown in FIG. The cam member 8 rotates clockwise to press the rear cam 8E, the cam member 8 rotates clockwise about the second axis C2, and the right end of the front cam member 8D is connected to the operating member 2 via the release member 5. Is turned counterclockwise.

  Further, when the front cam portion 8D rotates the operating body 2 counterclockwise, the operating body 2 returns to the neutral position together with the operation lever 3 and returns to the neutral state, and the electric power of the switch portion is accordingly changed. The turn signal lamp that was flashing turns off.

  Similarly, when the vehicle is turned leftward, the operation lever 3 is swung to the second operation position counterclockwise in the left direction, thereby moving to the first operation position in the right direction described above. The operating body 2, the cam body 8 and the like operate in the direction opposite to the description at the time of the operation, and the left turn signal lamp blinks.

  At this time, when the steering is turned counterclockwise in the left direction, the left side surface of the front cam portion 8D is in contact with the left release protrusion 5A as the cancel cam 11 rotates counterclockwise. The cam body 8 rotates clockwise. Further, after the cam body 8 increases the biasing force in the counterclockwise direction by the biasing spring 10, the cancel cam 11 is separated from the rear cam portion 8E and collides with the left release protrusion 5A facing the front cam portion 8D. At the same time, the rear cam portion 8E jumps up and collides with the upper edge portion of the opening 1A, but the impact force is alleviated by the impact absorbing portion 1B, and the impact noise is reduced.

  As described above, according to the present embodiment, the first cover 1 whose bottom surface is opened, the second cover 9 disposed to face the first cover 1, and the operation lever 3 provided at one end are operated. An actuating body 2 accommodated between the first cover 1 and the second cover 9 so as to be rotatable around the first axis C1 from the neutral position to the first operating position or the second operating position; 2 Between the cover 9 and the operating body 2 is held rotatably about a second axis C2 arranged in parallel to the first axis C1, and in the front-rear direction orthogonal to the second axis C2. A cam body 8 in which the second axis C2 is held so as to be substantially linearly movable, and a rear cam portion 8E provided at the rear portion protrudes outward from an opening portion 1A provided on the rearward side of the first cover 1; The second cover 9 is engaged with the upper surface of the second cover 9 facing the cover 1 and urges the cam body 8 outward. An urging spring 10 for pressing the cam body 8 is provided on the upper surface, and the rear cam portion 8E of the cam body 8 moves to a position where it abuts on the cancel cam 11 in a state where the operating body 2 is located at the first or second operation position. The turning direction indicating device 50 outputs a detection signal in response to the turning operation of the operating body 2, and the direction in which the biasing spring 10 presses the cam body 8 in the opening 1 </ b> A of the first cover 1. On the opposite side, an impact absorbing portion 1B is disposed in the opening 1A facing the rear cam portion 8E to constitute a turning direction indicating device.

  With such a configuration, when the operating body 2 rotates to the first operating position or the second operating position, the cam body 8 is urged to rotate and is associated with a collision with the release protrusion 5A of the release body 5. When the rear cam portion 8E jumps up and collides with the upper edge portion of the opening 1A, the impact is absorbed by the impact absorbing portion 1B disposed opposite to the rear cam portion 8E, so that the collision noise is reduced. Therefore, it is possible to realize a turning direction indicating device that reduces the collision sound caused by the cam body 8 and quiets the operation sound.

  In addition, the cam body 8 has a recessed portion on the inner side of the base portion 8A and the rear cam portion 8E, which are arranged in a direction in which the biasing spring 10 is biased from the engagement recess 8F with which the biasing spring 10 is engaged and elastically contacted. 8G is provided. The mass of the cam body 8 in the rearward direction is reduced from the engagement recess 8F with which the biasing spring 10 is elastically contacted by these recesses 8G. For this reason, when the rear cam portion 8E collides with the opposing shock absorbing portion 1B, the collision energy is smaller than when there is no recess 8G, so that the collision sound is further reduced and the operation sound is quieter. A turning direction indicating device can be provided.

  Further, as another embodiment, a configuration shown in a cross-sectional view of the main part in FIG. 6 will be described. The cam body 28 is held between the first cover 21 and the operating body 22 so as to be rotatable about a second axis C2 disposed in parallel with the first axis C1. Further, the second axis C2 is held in a rearward direction orthogonal to the second axis C2 so as to be substantially linearly movable, and the rear cam portion 28E protrudes from a substantially frame-shaped opening 21A on the side surface of the first cover 21. . The urging spring 30 is engaged with the lower surface of the first cover 21 to urge the cam body 28 in the rear direction, which is the outward direction, and presses the cam body 28 against the lower surface of the first cover 21. In such a configuration, the shock absorbing portion 21 </ b> B is disposed on the lower edge of the frame shape facing the lower surface of the first cover 21 in the opening 21 </ b> A of the first cover 21.

  With the turning direction indicating device having such a configuration, when the rotationally biased cam body 28 collides with the release body due to contact with the cancel cam, the rear cam portion 28E jumps up, and the opposed opening portion 21A. Even if it collides with the lower edge of the impact, the impact force is alleviated by the impact absorbing portion 21B, and the impact noise is reduced.

  In the above description, the swivel direction indicating device is configured to output a predetermined detection signal based on electrical contact / separation of the switch unit in accordance with the swinging operation of the operation lever. The present invention can be implemented even if the present invention is applied to a structure in which a predetermined detection signal is output by detecting the movement of the body with a light detection sensor or a magnetic detection sensor.

  The turning direction indicating device according to the present invention has a simple configuration, can reduce a collision sound caused by a cam body, and can obtain a quiet operation sound, and is mainly useful for an automobile.

1, 21 First cover 1A, 21A Opening 1B, 21B Shock absorber 2, 22 Actuator 2A Shaft 2B Storage hole 2C Holding recess 2D Holding cam 3 Operation lever 4A Moderation spring 4B Moderation pin 5 Release body 5A Release projection 6A Holding spring 6B Ball 7 Holding case 7A Bearing portion 8, 28 Cam body 8A Base portion 8B First shaft portion 8C Second shaft portion 8D Front cam portion 8E, 28E Rear cam portion 8F Engaging recess 8G Recessed portion 9 Second cover 10 , 30 Biasing spring 11 Cancel cam 50 Turning direction indicating device

Claims (3)

It is placed near the cancellation cam that rotates in conjunction with the rotation of the steering shaft,
A first cover with one side open;
A second cover disposed opposite to the first cover;
Along with the operation of the operation lever provided at one end, it is possible to rotate from the neutral position to the first operation position or the second operation position about the first axis between the first cover and the second cover. A contained operating body;
The second cover and the operating body are rotatably held around a second axis disposed in parallel with the first axis, and are arranged in a predetermined direction perpendicular to the second axis. A cam body in which the second shaft center is held so as to be substantially linearly movable, and a rear cam portion provided at a rear portion projects outward from an opening portion provided on the predetermined direction side of the first cover;
A biasing spring that is locked to the facing surface of the second cover facing the first cover, biases the cam body outward, and presses the cam body against the facing surface;
In a state where the operating body is positioned at the first or second operating position, the rear cam portion of the cam body moves to a position where the cam is in contact with the cancel cam,
A turning direction indicating device that outputs a detection signal in response to a turning operation of the operating body,
A turning direction indicating device in which an impact absorbing portion is disposed opposite to the rear cam portion on the opposite side to the direction in which the biasing spring presses the cam body in the opening of the first cover. The cam body is held between the first cover and the operating body so as to be rotatable about the second axis disposed in parallel with the first axis, and the second axis. The second axis is held so as to be substantially linearly movable in the predetermined direction orthogonal to the first cam, and the rear cam portion projects from the opening on the side surface of the first cover,
2. The turning direction indicating device according to claim 1, wherein the urging spring is engaged with the one surface of the first cover, urges the cam body outward, and presses the cam body against the one surface. The turning direction indicating device according to claim 1 or 2, wherein a recess is provided on the inner side of the cam body in a direction in which the biasing spring is biased from a position where the biasing spring of the cam body is engaged and elastically contacted. .