JP2010143460A - Blinker device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blinker device for a vehicle that can reduce an impact noise generated between a ratchet and an engaging part at the time of normal cancelling, and excels in durability. <P>SOLUTION: A magnet 36 is provided on a cover 3b of a body 3, and a magnetic body 35 that is attracted to the magnet 36 is provided to a ratchet 27. In a state where a bracket 5 is rotated to a left turn instructing position or a right turn instructing position, at the time of the normal cancelling in which a cancel cam is rotated to the same direction as the instructing direction of the bracket 5 by a steering wheel, an attracting force for attracting the magnetic body 35 provided to the ratchet 27 by the magnet 36 provided on the cover 3b reduces a rotating force in a direction in which a reverse cancel cam side end part 27b of the ratchet 27 contacts with the engaging part. Therefore, the impact noise generated between the reverse cancel cam side end part 27b of the ratchet 27 and the engaging part can be reduced. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicular direction indicating device having a self-cancelling mechanism, and in particular, a vehicular direction having a function of mitigating a collision sound generated between a ratchet and an engaging portion at the time of so-called forward cancellation. The present invention relates to an indicating device.

  2. Description of the Related Art Conventionally, vehicular direction indicating devices have the following configurations. In the state where the turn lever and the bracket are positioned at the neutral position, the ratchet of the cancel mechanism is biased to the cancel cam side by the ratchet spring constituting the biasing means, and is on the opposite side of the cancel cam in the ratchet. The anti-cancellation cam side end is positioned between two canceling engaging portions provided on the bracket. The bracket is held in a neutral position by the moderation means.

  From this state, when the bracket is rotated, for example, to the left turn instruction position by operating the turn lever, the end portion on the cancel cam side of the ratchet enters the rotation locus of the cancel convex portion of the cancel cam. At this time, the anti-cancellation cam side end portion of the ratchet is in a state of being close to one of the two engaging portions. Further, as the bracket rotates, the turn signal switch operates and the turn signal lamp for left turn blinks.

  When the steering wheel is rotated in the left direction (forward direction), which is the same as the direction indicated by the turn lever, and the cancel cam is rotated in the left direction, the cancel convex portion of the cancel cam is ratcheted. The ratchet hits the end portion of the cancel cam from one side and swings about the shaft portion. In this case, the ratchet swings in a direction away from the engaging portion where the end portion on the side opposite to the cancel cam is close to allow the passage of the cancel convex portion, and the bracket and the turn lever Remains held at the left turn instruction position. When such order cancellation is performed, the turn signal switch is left as it is, and the turn signal lamp for left turn continues to flash.

On the other hand, when the steering wheel is rotated in the right direction opposite to the direction indicated by the turn lever and the cancel cam is rotated in the right direction in the left turn-in state, the cancel convex portion of the cancel cam is Hits the cancel cam side end of the ratchet from the opposite direction, and the ratchet is swung in the opposite direction. In this case, the ratchet is rotated in a direction in which the end portion on the side opposite to the cancel cam is engaged with the adjacent engaging portion, so that the bracket and the turn lever are neutralized from the left turn instruction position via the engaging portion. It is rotated in the position direction and returned to the neutral position. Accordingly, the turn signal switch is turned off, and the turn signal lamp for left turn is turned off.
The above description is about the case where the bracket is rotated to the left turn instruction position. However, when the bracket is turned to the right turn instruction position, only the rotation direction of each member is reversed. The basic operation is the same as described above.

  In such a configuration, when the bracket is rotated to the left turn instruction position or the right turn instruction position and the cancel cam is rotated in the same direction as the instruction direction of the bracket by the steering wheel (during forward cancellation) As the ratchet oscillates when allowing the cancellation convex portion of the cancel cam to pass, there is a problem that the end portion of the ratchet on the side opposite to the cancel cam collides with the engaging portion, and the collision sound becomes annoying.

In order to deal with such a problem, a soft member is provided at the end of the ratchet on the side opposite to the cancel cam, and the impact force when the end of the ratchet on the side of the cancel cam hits the engaging portion is caused by the elasticity of the soft member. There has been proposed a structure in which a collision sound generated between them is alleviated by absorbing them (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 6-71296

  In the thing of above-mentioned patent document 1, since the soft member provided in the anti-cancellation cam side edge part of a ratchet collides with an engaging part, there exists a problem that the soft member is easy to wear and it is inferior to durability.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to reduce the collision noise generated between the ratchet and the engaging portion when canceling the order and is excellent in durability. It is to provide a direction indicating device.

In order to achieve the above-described object, a vehicle direction indicating device of the present invention is provided with a cancel cam having a cancel projection and rotated by a steering wheel, and is rotatably provided on the body in the vicinity of the cancel cam. A bracket that is rotated between the left turn instruction position and the right turn instruction position around the neutral position together with the turn lever, and a moderation means that selectively holds the bracket at the neutral position, the left turn instruction position, and the right turn instruction position. And two canceling engaging portions provided on the bracket, swingable about a shaft portion, movable in a direction approaching and separating from the cancel cam, and further the cancel cam The opposite end of the non-cancellation cam opposite the cancel cam is positioned between the two engaging portions, and the bracket The ratchet includes a ratchet that moves to the cancel cam side as the left turn instruction position or the right turn instruction position is rotated, and the end portion on the cancel cam side enters the rotation locus of the cancel convex portion. When the cancel cam is rotated in the same direction as the indicated direction of the bracket by the steering wheel while being rotated to the left turn instruction position or the right turn instruction position, the ratchet Is swung by the cancel convex portion, and the end portion on the side opposite to the cancel cam is separated from the adjacent engaging portion of the two engaging portions, thereby allowing the cancel convex portion to pass and swinging. When the cancel cam is rotated in the direction opposite to the direction indicated by the bracket, the ratchet is As the cancel cam side end portion is swung by the cancel convex portion, the anti-cancellation cam side end portion engages with an adjacent engagement portion of the two engagement portions to neutralize the bracket. In what is made to return to the position,
A magnet is provided on the body, and a magnetic body that is attracted to the magnet is provided on the ratchet.
With the bracket rotated to the left turn instruction position or the right turn instruction position, the cancel cam is rotated in the same direction as the instruction direction of the bracket by the steering wheel, and the end portion of the ratchet on the cancel cam side is The anti-cancellation cam of the ratchet is caused by the attractive force that the magnet attracts the magnetic body when the ratchet swings and returns after allowing the cancellation convex portion to pass along with being swung by the cancel convex portion. The structure is characterized in that the rotational force in the direction in which the side end portion hits the engaging portion is weakened.

  According to the present invention, the bracket is provided in the body at the time of forward cancellation in which the cancel cam is rotated in the same direction as the direction indicated by the bracket while the bracket is rotated to the left turn instruction position or the right turn instruction position. Engagement with the ratchet anti-cancellation cam side end because the magnet attracts the magnetic material provided on the ratchet and the rotational force in the direction in which the ratchet anti-cancel cam side hits the engagement part is weakened. It is possible to mitigate the impact sound generated between the two parts.

  Further, since the means for mitigating the collision noise is an attractive force between the magnet provided on the body and the magnetic body provided on the ratchet, the magnet and the magnetic body are not easily worn, and the elasticity of the soft member Compared to those using, it has excellent durability.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
First, in FIG. 2, the cancel cam 1 has a cancel projection 2 on the outer peripheral portion, and is rotated integrally with a steering wheel (not shown). In the vicinity of the right side of the cancel cam 1, a body body 3a of the body 3 (see FIG. 1) is provided in a fixed state. As shown in FIG. 1, the body 3 includes a lower body body 3a and a cover 3b attached to the upper surface of the body body 3a.

  A bracket 5 is disposed in the body 3. The bracket 5 is provided so as to be rotatable about the shaft portion 6 in the directions of arrows A1 and A2 in FIG. The base end portion of the turn lever 7 is inserted into the bracket 5. The turn lever 7 is connected to the bracket 5 by a shaft portion 8, and is provided so as to be able to rotate in the arrow A 1 direction and the arrow A 2 direction of FIG. On the other hand, the shaft 8 is provided so as to be rotatable in the directions of arrows B1 and B2 in FIG. 1 intersecting the arrows A1 and A2.

  An accommodation hole 9 having an opening at the distal end side is formed at the distal end portion of the bracket 5, and a moderation piece 10 and a moderation spring 11 for urging the moderation piece 10 outward are provided in the accommodation hole 9. ing. In the body main body 3a, a moderation surface portion 12 is provided at a portion facing the tip portion of the bracket 5, and the moderation piece 10 is slidably in contact with the moderation surface portion 12. Here, the moderation piece 10, the moderation spring 11, and the moderation surface portion 12 constitute a moderation mechanism 13 (corresponding to moderation means) in the directions of arrows A1 and A2 of the turn lever 7 and the bracket 5. As is well known, the moderation mechanism 13 is configured to selectively hold the turn lever 7 and the bracket 5 at a neutral position shown in FIG. 2, a left turn instruction position shown in FIG. 3, and a right turn instruction position (not shown). (See N, R, and L in FIG. 2).

  A receiving hole 14 whose front end is opened is also formed at the base end portion of the turn lever 7 inserted in the bracket 5, and the moderation piece 15 and the moderation piece 15 are urged outward in the receiving hole 14. A moderation spring 16 is provided. In the bracket 5, a moderation surface portion 17 is provided in a portion of the turn lever 7 facing the accommodation hole 14, and the moderation piece 15 is slidably in contact with the moderation surface portion 17. Here, the moderation piece 15, the moderation spring 16, and the moderation surface portion 17 constitute a moderation mechanism 18 in the directions of arrows B 1 and B 2 of the turn lever 7.

  A turn signal switch 19 whose state is changed in conjunction with the rotation of the bracket 5 in the directions of arrows A1 and A2 is provided at the lower portion of the body main body 3a, and the arrow B1 of the turn lever 7 and A dimmer passing switch 20 whose state is changed in conjunction with rotation in the B2 direction is provided.

  A back plate 23 having two canceling engagement portions 21 and 22 is provided on the upper surface portion of the bracket 5. The back plate 23 is provided so as to be movable in the directions of arrows C1 and C2 in FIG. 2, and is always held at the original position shown in FIG. The two engaging portions 21 and 22 are arranged in a C shape when viewed from the cancel cam 1 side. Further, a guide convex portion 25 (see FIG. 3) having a mountain shape is formed on the tip end portion side (cancellation cam 1 side) of the upper surface portion of the bracket 5, and the guide around the guide convex portion 25. A concave portion 26 lower than the convex portion 25 is formed.

  A ratchet 27 is disposed on the tip end side of the upper surface portion of the bracket 5, and this ratchet 27 is covered from above by a cover 3b. A shaft portion 28 protruding in the vertical direction is integrally provided at a substantially intermediate portion in the longitudinal direction of the ratchet 27, and the ratchet 27 can swing around the shaft portion 28. The lower portion of the shaft portion 28 is inserted into the recess 26, and the upper portion of the shaft portion 28 is movably inserted into a guide groove 29 formed on the inner surface of the cover 3b. The guide groove 29 extends in a direction along a line connecting the center of the shaft portion 6 that is the rotation center of the bracket 5 and the rotation center of the cancel cam 1.

  A spring recess 30 is formed in the lower portion of the ratchet 27, and an intermediate portion of a ratchet spring 31 made of a tension coil spring is inserted into the spring recess 30. Both end portions in the longitudinal direction of the ratchet spring 31 are hooked on the body main body 3a, and the ratchet 27 is biased toward the cancel cam 1 (in the direction of arrow D in FIGS. 1 and 2) by the biasing force of the ratchet spring 31. ing. Here, the ratchet 27 is provided so as to be able to oscillate about the shaft portion 28 and to move in the direction of approaching and separating from the cancel cam 1 along the guide groove 29. In the ratchet 27, the cancel cam side end portion 27a on the cancel cam 1 side protrudes from the opening 32 of the body 3 toward the cancel cam 1 side, and the opposite cancel cam side end portion 27b opposite to the cancel cam 1 is It is located between the two engaging portions 21 and 22.

  In the ratchet 27, an iron magnetic body 35 is provided so as to be positioned closer to the anti-cancellation cam side end portion 27b than the shaft portion 28 is. And the magnet 36 which consists of a permanent magnet is provided in the lower surface of the cover 3b, and is located in the right side of the guide groove 29. As shown in FIG. The magnet 36 is disposed on a line connecting the shaft portion 6 that is the rotation center of the bracket 5 and the rotation center of the cancel cam 1. The magnetic body 35 provided in the ratchet 27 is not limited to iron as long as it is a metal attracted by the magnet 36, and may be nickel, for example.

Next, the operation of the above configuration will be described.
In a state where the turn lever 7 and the bracket 5 are positioned at the neutral position shown in FIGS. 1 and 2, the lower portion of the shaft portion 28 of the ratchet 27 faces the tip end portion of the guide convex portion 25 in the concave portion 26, and the ratchet 27 is displaced in a direction away from the cancel cam 1 (opposite to the arrow D) against the urging force of the ratchet spring 31. In this state, the cancel cam side end portion 27a is positioned outside the rotation locus E (see FIG. 2) of the cancel convex portion 2 in the cancel cam 1. Further, the non-cancellation cam side end portion 27 b of the ratchet 27 is located at a substantially central portion between the two engaging portions 21 and 22. Furthermore, the magnetic body 35 provided in the ratchet 27 is located slightly on the shaft 6 side from below the magnet 36 provided in the cover 3b.

  When the turn lever 7 is rotated in the direction of the arrow A1, which is a left turn instruction direction, for example, from the neutral position, the bracket 5 is rotated together with the turn lever 7 in the direction of the arrow A1 about the shaft portion 6. It will be in the state rotated to the left turn instruction | indication position of FIG. Then, the lower portion of the shaft portion 28 of the ratchet 27 is disengaged from the tip of the guide convex portion 25, moves to the skirt side along the slope of the guide convex portion 25, and is moved and displaced in the direction of arrow D by the urging force of the ratchet spring 31. Thus, the cancel cam side end portion 27a of the ratchet 27 enters the rotation locus E of the cam projection 2 in the cancel cam 1. At this time, the non-cancellation cam side end portion 27b of the ratchet 27 is in a state of being close to or in contact with one of the engaging portions 21. Further, the magnetic body 35 provided on the ratchet 27 substantially overlaps with the magnet 36 provided on the cover 3b, and receives the attractive force of the magnet 36 strongly. As the bracket 5 rotates in the direction of the arrow A1, the turn signal switch 19 is turned on and a left turn signal lamp (not shown) blinks.

  In this left turn instruction position input state, the cancel cam 1 is rotated in the same left direction (arrow F1 direction) (forward direction) as the instruction direction of the turn lever 7 by a steering wheel (not shown), and the cancel protrusion 2 is ratchet 27. When the ratchet 27 comes into contact with the cancel cam side end portion 27a from the direction of the arrow F1, the anti-cancellation cam side end portion 27b moves away from the adjacent engagement portion 21 around the shaft portion 28 (in the direction of the arrow G1). ) And the passage of the cancel projection 2 in the direction of arrow F1 is permitted. When the cancel convex portion 2 passes in the direction of the arrow F1, the ratchet 27 returns to its original state by the urging force of the ratchet spring 31.

  At this time, the ratchet 27 rotates in the direction in which the anti-cancellation cam side end portion 27b hits the engaging portion 21 by the force of the swing return force, but the magnet 36 provided on the cover 3b is provided on the ratchet 27. The anti-cancellation cam side end portion 27b of the ratchet 27 acts so as to weaken the rotational force in the direction in which the ratchet 27 contacts the engaging portion 21 by the attractive force that attracts the magnetic body 35. For this reason, it becomes possible to mitigate the collision sound generated between the anti-cancellation cam side end portion 27 b of the ratchet 27 and the engaging portion 21. In this case, the bracket 5 and the turn lever 7 remain held at the left turn instruction position.

  In contrast, when the left turn instruction position in FIG. 3 is turned on, the cancel cam 1 is rotated by the steering wheel in the right direction (in the direction of arrow F2) opposite to the instruction direction of the turn lever 7, and the cam protrusion 2 is moved. When the ratchet 27 comes into contact with the cancel cam side end portion 27a of the ratchet 27 from the direction of the arrow F2, the ratchet 27 is centered on the pin 28 and the anti-cancel cam side end portion 27b is engaged with the adjacent engagement portion 21 in the arrow G2 direction. So as to be swung. As the ratchet 27 rotates in the arrow G2 direction, the anti-cancellation cam side end 27b engages with the engaging portion 21, and a rotational force that rotates the bracket 5 in the arrow A2 direction acts. As a result, the bracket 5 and the turn lever 7 are rotated in the direction of the arrow A2 and returned to the neutral position in FIG. 1, thereby performing a self-cancelling operation. Accordingly, the left turn switch of the turn signal switch 19 is turned off, and the left turn turn signal lamp is turned off.

  Next, the turn lever 7 is held by the driver so as not to rotate and return in the direction of the arrow A2 in the state where the right turn instruction position shown in FIG. 3 is turned on. In this state, the cancel cam 1 is indicated by the turn direction of the turn lever 7 by the steering wheel. When the cam convex portion 2 comes into contact with the cancel cam side end portion 27a of the ratchet 27 from the direction of the arrow F2 when the cam convex portion 2 is rotated in the right direction (in the direction of the arrow F2) opposite to that of the turn lever 7. The ratchet 27 is pivotally displaced around the pin 28 so that the anti-cancellation cam side end portion 27b is swung in the direction of the arrow G2 that engages with the adjacent engagement portion 21, and the anti-cancellation cam side end portion 27b. Is engaged with the engaging portion 21, and the rotational force that rotates the bracket 5 in the direction of arrow A2 acts.

  However, in this case, since the turn lever 7 and the bracket 5 are prevented from rotating in the direction of the arrow A2, the turn lever 7 and the bracket 5 are not rotated in the direction of the arrow A2, and the back plate 23 is moved back. The ratchet 27 slides in the direction of the arrow C1 against the urging force of the spring 24, and the ratchet 27 rotates about the pin 28 in the direction of the arrow G2. As the ratchet 27 rotates in the arrow G2 direction in this way, the cam protrusion 2 is allowed to pass in the arrow F2 direction. When the cam projection 2 passes in the direction of arrow F2, the back plate 23 returns to the original position by the urging force of the back spring 24, and the ratchet 27 rotates in the direction opposite to the arrow G2, so that the ratchet 27 is in its original state. To return to. The above operation is the operation of the biting escape function.

  The above description is about the case where the turn lever 7 is turned in the direction of the left turn instruction position. However, when the turn lever 7 is turned in the direction of the right turn instruction position, the turning direction of each member is changed. Since the basic operation is the same as above only in the reverse direction, the description is omitted.

In the embodiment described above, the following operational effects can be obtained.
When the cancel cam 1 is rotated in the same direction as the indicated direction of the bracket 5 by the steering wheel while the bracket 5 is rotated to the left turn instruction position or the right turn instruction position, the cover 3b is provided on the cover 3b of the body 3. Since the magnet 36 attracts the magnetic body 35 provided on the ratchet 27, the turning force in the direction in which the anti-cancellation cam side end portion 27b of the ratchet 27 hits the engaging portion 21 or 22 is weakened. It is possible to mitigate the collision noise generated between the anti-cancellation cam side end portion 27b and the engaging portions 21, 22.

  Further, the means for alleviating the collision sound is an attractive force between the magnet 36 provided on the body 3 and the magnetic body 35 provided on the ratchet 27, so that the magnet 36 and the magnetic body 35 are worn. It is difficult and is superior in durability compared to the one using the elasticity of a soft member.

  As the magnetic body 35 provided in the ratchet 27, a magnet may be used. In this case, it is necessary for the magnet to have the pole attracting the magnet 36 on the cover 3b side facing the magnet 36 side.

1 shows an embodiment of the present invention, and is a longitudinal sectional view in a state where a bracket and a turn lever are positioned at a neutral position. A plan view showing the same state with the body cover removed. FIG. 2 equivalent view with the bracket and turn lever positioned at the left turn instruction position

Explanation of symbols

  In the drawings, 1 is a cancel cam, 2 is a cancel projection, 3 is a body, 3b is a cover, 5 is a bracket, 6 is a shaft, 7 is a turn lever, 13 is a moderation mechanism (moderation means), and 19 is a turn signal switch. 21 and 22 are engaging portions, 23 is a back plate, 27 is a ratchet, 27a is a cancel cam side end, 27b is an anti-cancel cam side end, 29 is a guide groove, 31 is a ratchet spring, 35 is a magnetic body, Reference numeral 36 denotes a magnet.

Claims (1)

A cancel cam having a cancel protrusion and rotated by a steering wheel;
A bracket that is pivotally provided on the body in the vicinity of the cancel cam, and that rotates between the left turn instruction position and the right turn instruction position around the neutral position together with the turn lever;
Moderation means for selectively holding the bracket at the neutral position, the left turn instruction position, and the right turn instruction position;
Two engaging portions for cancellation provided on the bracket;
It can be swung around the shaft, can move in the direction of approaching and separating from the cancel cam, and is further urged toward the cancel cam, and is anti-cancelled on the opposite side of the cancel cam. The cam side end is positioned between the two engaging portions, and the bracket is moved to the left turn instruction position or the right turn instruction position to move to the cancel cam side, so that the cancel cam side end is A ratchet that enters into the rotation locus of the canceling convex portion,
When the bracket is rotated to the left turn instruction position or the right turn instruction position and the cancel cam is rotated in the same direction as the direction indicated by the bracket by the steering wheel, the ratchet As the side end portion is swung by the cancel convex portion, the anti-cancel cam side end portion is separated from the adjacent engaging portion of the two engaging portions, thereby allowing the cancel convex portion to pass. When the cancel cam is rotated in a direction opposite to the direction indicated by the bracket, the ratchet is counteracted when the end portion on the cancel cam side is swung by the cancel convex portion. The end portion on the cancel cam side engages with the adjacent engaging portion of the two engaging portions so that the bracket is in the neutral position. The vehicle direction indicating apparatus that is rotated restored,
A magnet is provided on the body, and a magnetic body that is attracted to the magnet is provided on the ratchet.
With the bracket rotated to the left turn instruction position or the right turn instruction position, the cancel cam is rotated in the same direction as the instruction direction of the bracket by the steering wheel, and the end portion of the ratchet on the cancel cam side is The anti-cancellation cam of the ratchet is caused by the attractive force that the magnet attracts the magnetic body when the ratchet swings and returns after allowing the cancellation convex portion to pass along with being swung by the cancel convex portion. A vehicular direction indicating device characterized in that a rotational force in a direction in which a side end portion hits the engaging portion is weakened.

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