JP2006123612A - Direction indicator for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To relax impact sound by turning action of an operation lever without increasing the number of parts. <P>SOLUTION: The direction indicator for the vehicle is provided with a cam member for returning the operation lever to a neutral position through a cancel plate in response to a cancel cam integrally turned with a steering handle. An elastic member for transmitting turning action of the cancel plate to a bracket is provided and when the operation lever is rotated/operated from the neutral position to a left/right direction, a pair of driving pieces provided on an outer peripheral edge of the cancel plate so as to be engageable with a rear end of the cam member is abutted on a first restriction projection projected from an inner peripheral surface of a switch case so as to opposed to the driving pieces. Thereby, the operation lever is stopped. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicular direction indicating device mounted in the vicinity of a steering handle of an automobile.

In general, the vehicle direction indicator device is configured as a lever switch unit disposed around the steering handle. When the operation lever is rotated from the neutral position, the direction indicator lamp blinks and the operation lever is rotated. Positioned at the moving position.
When the steering handle is rotated and then reversely rotated to the original position, the operating lever is returned to the original neutral position by a cancel mechanism linked to the steering handle.

  Conventionally, as a vehicular direction indicating device provided with such a canceling mechanism, for example, a vehicular lever switch as disclosed in JP-A-10-2223098 has been proposed.

  In this vehicular lever switch, when the operation lever 14 is rotated from the center position to the left and right, the switch operating body 2 with the operation lever 14 mounted on the end portion rotates about the rotation shafts 2A and 2F, and the coil spring. The moderation pin 3 urged by 4 is elastically slid on the moderation cam portion 1B of the case 1 to perform a rotation operation with the moderation of the operation lever 14 via the switch operating body 2, In addition, the sliding body 12 of the switch unit 9 slides on the terminal board 10, and the contact pieces 13 housed on the lower surface of the sliding body 12 cause the plurality of fixed contacts 11 to be electrically connected and separated, and at the same time, the cam 6A slides in the concave cam groove 2B of the operating body 2 so that the protruding portion 6D protrudes from the opening 1E at the rear of the case 1 in the direction of the cancel cam 16.

  In this vehicle lever switch, when the operation lever 14 is rotated from the center position in the left-right direction, the outer peripheral surface of the operating body 2 comes into contact with the inner peripheral surface of the case 1, so that an impact sound is generated. Resonance within 1 may cause a loud sound in the passenger compartment and give an unpleasant impression.

  In order to mitigate such an impact sound, there is a cushioning member such as rubber provided on the inner peripheral surface of the case 1 with which the operation lever 14 of the case 1 comes into contact. In addition to the increase, it is necessary to mount a buffer member on the inner peripheral surface of the case 1, so that the assembling workability is deteriorated.

JP-A-10-2223098

  In view of the problems of the above-described conventional vehicle direction indicating device, the present invention proposes a vehicle direction indicating device that can alleviate the impact sound caused by the rotation of the operation lever without increasing the number of parts. With the goal.

In order to achieve the above object, in the present invention, as a first invention, a switch case that rotatably supports an operation lever;
A bracket that is integrally connected to the operation lever and rotates in the left-right direction from the neutral position according to the rotation operation of the operation lever;
A cancel plate provided to interlock with the bracket;
A cam member biased so as to be slidable and rotatable in accordance with the rotation operation of the cancel plate;
A cancel cam that rotates integrally with a steering handle, presses the tip of the cam member, and rotates the cam member to return the bracket to a neutral position via the cancel plate; ,
In a vehicle direction indicating device comprising:
A pair of drive pieces provided on an outer peripheral edge of the cancel plate and engageable with a rear end of the cam member;
An elastic member for transmitting the rotation of the cancel plate to the bracket;
A first restricting protrusion protruding from the inner peripheral surface of the switch case so as to face the drive piece;
A vehicle characterized in that when the operation lever is rotated in the left-right direction from a neutral position, the rotation of the operation lever is stopped by bringing the drive piece into contact with the first restricting protrusion. A direction indicator device is proposed.

As a second invention, in the vehicle direction indicating device according to claim 1,
Providing a second restricting protrusion projecting from the inner peripheral surface of the switch case so as to face the outer peripheral surface of the bracket;
After the drive piece comes into contact with the first restriction protrusion and the operation lever is stopped, when the operation lever is further rotated, the outer peripheral surface of the bracket and the second restriction protrusion are brought into contact with each other. Thus, the vehicular direction indicating device stops rotation of the operation lever.
Propose.

As a third invention, in the vehicular direction indicating device according to claim 1 or 2,
In either one of the cancel plate or the bracket, an arcuate accommodation groove is formed to dispose the elastic member, and on the other side, a protruding portion that protrudes into and comes out of the accommodation groove and presses the elastic member is provided.
Proposed is a vehicular direction indicating device characterized in that the canceling plate is held in a neutral position by the elastic member.

  According to the present invention, a cancel plate and a bracket constituting a cancel mechanism of a vehicular direction indicating device are interlocked with each other through an elastic member, and a drive piece of the cancel plate is brought into contact with a first regulating protrusion of a switch case to thereby bracket the bracket. Since the impact due to the pivoting operation is reduced by the elastic member and the pivoting operation of the operation lever is elastically stopped, the impact sound can be reduced without providing a buffer member such as rubber.

  Further, as in the second aspect of the invention, when the operation lever is further rotated by a force greater than the urging force of the elastic member, the rotation of the bracket is restricted by the switch case, so that the operation lever The rotation operation can be stopped.

  In addition, as in the third aspect of the invention, since the elastic member that holds the cancel plate in the neutral position is used, it is possible to reduce the impact sound without increasing the number of parts.

  Next, the vehicle direction indicating device of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view showing a state in which a vehicle direction indicating device constituting the vehicle direction indicating device is attached to a peripheral portion of a steering shaft, FIG. 2 is an exploded perspective view of the vehicle direction indicating device, and FIG. 1 is a sectional view taken on line 1A-1A on FIG. In FIG. 1, the front side of the page is referred to as “front” and the back side is referred to as “rear”.

  4A is a plan view, FIG. 4B is a side view, FIG. 4C is a front view, and FIG. 5A is a state where the operation lever 19 and the cancel plate 52 are assembled to the bracket 23. FIG. 6B is a partial sectional view taken along line 5B-5B in FIG. 3, FIG. 6 is a plan view of the cancel plate 52, FIG. 6B is a side sectional view, and FIG. 7, (a) of the cam member 40 is a plan view, (b) is a front view, (c) is a side view, FIG. 8 is a perspective view of the cam spring 36, and FIG. ) Is a front view, (b) is a plan view, (c) is a bottom view, FIG. 10 (a) is a sectional view taken along line 10A-10A in FIG. 9 (a), and (b) is FIG. 9 (b). FIG. 10C is a cross-sectional view taken along line 10B-10B, and FIG. 10C is a cross-sectional view taken along line 10C-10C in FIG.

As shown in FIG. 1, a mounting member 2 that is integrally fixed to a steering lock (not shown) is disposed around a steering shaft 1 to which a steering handle (not shown) is coupled. Is provided with a large-diameter hole 3 through which the steering shaft 1 passes.
Further, the upper arm (upper side in FIG. 1) of the large-diameter hole 3 is provided with a mounting arm portion 4 projecting in a cylindrical shape in the axial direction on the left and right sides. On the lower side, protruding protrusions 5 are provided symmetrically.

  Reference numeral 6 denotes a ring-shaped cancel cam that is integrated with a steering handle (not shown) and interlocks with the rotation of the steering handle, and a cancel restricting portion 6a that protrudes outward within a predetermined angle range is formed on the outer periphery thereof.

In the vehicular direction indicating device 10, a switch structure as shown in FIG. 3 is built in a substantially box-shaped switch case 11, and an operation lever 19 is rotatably attached to a part of a side surface thereof.
And the hooking part 12 which can be engaged with the attachment arm part 4 of the attachment member 2, and the circular-arc-shaped curved surface are provided on the side surface (left side in FIG. 1) opposite to the operation lever 19 of the vehicle direction indicating device 10. A fixing portion 13 having the same is extended. (Figure 2)

When the vehicle direction indicating device 10 is attached to the attachment member 2, the hook 12 is engaged with the attachment arm 4 and rotated clockwise.
As a result, the fixing portion 13 is fitted into a groove formed on the side surface of the mounting member 2 (not shown), and the vehicular direction indicating device 10 is held by the mounting member 2.

  The claw portion 13a provided on the bottom surface of the fixed portion 13 and the protrusion 5 provided on the bottom surface of the mounting member 2 are connected by a leaf spring-like connecting member 7, thereby steering the vehicular direction indicating device 10 to the steering. It can be integrally fixed to the peripheral portion of the shaft 1.

On the other hand, a wiper switch device 8 for operating a windshield wiper is similarly attached to the opposite side surface of the attachment member 2 to which the vehicle direction indicating device 10 is attached.
The vehicle direction indicating device 10 and the wiper switch device 8 constitute a vehicle combination switch.
In the present invention, the structure unique to the vehicular direction indicating device 10 is characterized. Therefore, the description of the wiper switch device 8 is omitted.

  As shown in FIGS. 2 and 3, the vehicle direction indicating device 10 is integrally formed with a switch case 11, an operation lever 19 that can be rotated in the front-rear direction and the left-right direction (vertical direction in FIG. 1), and the operation lever 19. A bracket 23 pivotally supported by the switch case 11 so as to be pivotable in the left-right direction, a lid 30 that pivotally supports the bracket 23 together with the switch case 11, and a terminal in which each switch is disposed. A base 33, a cam member 40 engaged with the tip of the bracket 23 so as to be interlocked with the rotation of the bracket 23, and a cam spring 36 that urges the cam member 40 so as to protrude from the switch case 11. Yes.

  Further, as shown in FIG. 3, the terminal base 33 illuminates the fixed contact 34 of the turn signal switch 46 for blinking the direction indicator lamp disposed on the side of the vehicle (not shown) and the front of the vehicle (not shown). A plurality of plate-like contact portions 35 constituting a light switch 47 for turning on the headlamp and a dimmer switch 48 for switching the headlamp from a low lamp to a high lamp and temporarily switching the headlight to a high lamp (so-called passing) are provided. It is arranged.

In the state shown in FIG. 1, the vehicle direction indicator 10 is in the neutral position, so the turn signal switch 46 that blinks the direction indicator lamp is off.
In order to blink the direction indicator lamp from this state, the operation lever 19 is rotated in the direction of the arrow a1 or b1 shown in FIG.
That is, when the operation lever 19 is rotated in the a1 direction, the direction indicator lamp disposed on the left side surface of the unillustrated vehicle blinks, and when the operation lever 19 is rotated in the b1 direction, it is disposed on the right side surface of the unillustrated vehicle. The direction indicator light is flashing.

  Further, when the operation knob 21 provided on the other end side of the operation lever 19 is rotated, the light switch 47 is switched, and a vehicle width (not shown) disposed on the side of the vehicle according to the rotation position of the operation knob 21. Lights and headlights.

  Further, when the operation lever 19 is operated in the front-rear direction, the dimmer switch 48 (FIG. 3) is switched, and when the operation lever 19 is moved in the front direction, the high light of the headlight is temporarily turned on and passed. When it is moved to, the headlight is switched from a low lamp to a high lamp and lit.

As shown in FIGS. 2 to 5, the bracket 23 is attached to the switch case 11 so as to be rotatable in the left-right direction (perpendicular to the paper surface in FIG. 3) around the rotation shaft 24 together with the operation lever 19. ing.
Further, arc-shaped protruding portions 25 centering on the rotation shaft 24 are formed on both edge portions of the upper surface of the bracket 23, respectively. (Fig. 4)

These projecting portions 25 are formed so as to be separated from each other so that the tip portions thereof are opposed to each other on the circumference around the rotation shaft 24.
In FIG. 4, 23b shown by a dotted line is a cylindrical square hole, and as shown in FIG. 5B, the positioning pin 60 biased by the coil spring is slidably accommodated.
Reference numeral 23c denotes an open shaft hole 23c into which the shaft portion 19a of the operation lever 19 can be fitted, and is provided symmetrically on both side surfaces.

A cam groove 26 is formed on the upper surface of a portion of the bracket 23 that protrudes on the opposite side of the rotating shaft 24, and a connecting protrusion 27 is extended on the bottom surface side.
As shown in FIG. 4 (a), the cam groove 26 is formed in an M shape, and in the center of the inner edge of the cam groove 26 located on the distal end side of the bracket 23, it has a mountain shape toward the rotating shaft 24. A protruding pressing edge portion 26a is formed.
On both sides of the pressing edge portion 26a, a recessed release edge portion 26b is formed, and inclined ribs 28 extending from the center of the pressing edge portion 26a toward the front end side of the bracket 23 are provided. It has been.
A cylindrical curved surface portion 23 a centering on the rotation shaft 24 is provided on the bottom surface side of the side surface of the bracket 23.

  As shown in FIGS. 3 and 5, the operation lever 19 is pivotally supported so as to be pivotable in the front-rear direction with respect to the bracket 23 around the shaft portion 19 a, and a detent portion 29 formed on the inner surface of the bracket 23. An action pin 20 that elastically abuts against the tip is provided so as to protrude toward the tip.

Further, a substantially T-shaped rod 49 having a rack gear 49a (FIG. 2) formed on one side is connected to the protruding end portion of the operating lever 19.
The rod 49 is connected to the distal end portion of the operation lever 19 so as to be interlocked with the rotation of the operation lever 19 in the front-rear direction and not interlocked with the rotation in the left-right direction (vertical direction in FIG. 5). .

  On the other hand, a rod-shaped shaft 50 is pivotally supported inside the operation lever 19, and the lower end of the shaft 50 from the base end portion of the operation lever 19 in which the shaft portion 19 a is formed. An engagement piece 51 protruding to the side is provided so as to protrude in the vertical direction (lower side in FIG. 3).

An operation knob 21 is integrally connected to the other end of the shaft 50 and is rotatably supported by the operation lever 19.
Therefore, when the operation knob 21 is rotated, the shaft 50 rotates integrally, and the engagement piece 51 is rotated in the left-right direction (up-down direction in FIG. 1).
The operation knob 21 is connected to the operation lever 19 via a click mechanism 22 as shown in FIG. 3 and can be rotated stepwise.

As shown in FIGS. 5 and 6, the cancel plate 52 has an arc shape centered on the rotation shaft 24 of the bracket 23, and has a pair of drive pieces 52 a at predetermined intervals on the outer peripheral edge portion. It is provided in a freely rotatable manner.
The bottom surface of the cancel plate 52 is formed with an accommodation groove 52b formed in an arc shape along the outer peripheral edge, and is formed at both ends of the accommodation groove 52b, and is slidably fitted to the protruding portion 25 of the bracket 23. A groove 52c is formed.
The escape groove 52c is an arc-shaped groove that is continuous with the accommodation groove 52b, and has a narrower width than the accommodation groove 52b, and can hold the coil spring 53 that is an elastic member at both ends of the accommodation groove 52b. It is like that.

As shown in FIG. 5, the coil spring 53 is set so that it can be accommodated in a compressed state in the accommodation groove 52 b of the cancel plate 52.
Therefore, the coil spring 53 can be integrated into the cancel plate 52 by housing the coil spring 53 in the housing groove 52b.

Then, the cancel plate 52 is assembled to the bracket 23 so that both ends of the coil spring 53 are brought into contact with the tip of the projecting portion 25, whereby the cancel plate 52 is held by the bracket 23 in a state of being biased to the neutral position. Can do.
As a result, the pivoting motion of the bracket 23 is transmitted from the protruding portion 25 to the cancel plate 52 via the coil spring 53.
Therefore, even if an abrupt load is applied to the cancel plate 52, it is alleviated by the coil spring 53, and the cancel plate 52 and the bracket 23 are not damaged.

As shown in FIG. 7, the cam member 40 has a narrow abutting portion 40a on the distal end side, and a fulcrum shaft portion 41 is provided on the upper surface of the central portion so as to protrude from the lower surface of the central portion. The fulcrum shaft portion 41 is provided with an operating shaft portion 42 that projects coaxially with the fulcrum shaft portion 41, and a slope 41 a that is inclined toward the rear end side of the cam member 40 is formed on the upper surface of the fulcrum shaft portion 41.
Further, a projecting edge portion 40b is formed on the bottom surface of the cam member 40 so as to protrude from both sides of the center. A cylindrical mounting portion 43 and a peripheral edge of the mounting portion 43 are formed on the upper surface of the projecting edge portion 40b. Each of the groove portions 44 formed in each is provided.
Each groove 44 is connected by a guide groove 45 formed to be shallower than the groove 44.

As shown in FIG. 8, the cam spring 36 has two winding portions 37 symmetrically formed at the intermediate portion of the elastic rod-like body, and elastic rod-like portions 38 are extended from the winding portion 37 toward the rear. It is a simple configuration.
The tip of the elastic rod-shaped portion 38 is refracted inward so as to be parallel when the elastic rod-shaped portion 38 is compressed inward.
The elastic force of the cam spring 36 can be set by selecting the material, alignment, and number of windings of the winding part 37.
Further, the cam spring 36 can be integrally incorporated in the cam member 40 by mounting the cam spring 36 on the attachment portion 43 so that the winding portion 37 is engaged with the groove portion 44 of the cam member 40.
The intermediate rod-shaped portion 39 formed in the middle of the winding portion 37 of the cam spring 36 is engaged with the guide groove 45 portion of the cam member 40.

As described above, the cam spring 36 is formed by symmetrically forming the two winding portions 37 and the elastic rod-shaped portion 38 into a single elastic rod-shaped body, whereby the urging forces at both ends of the elastic rod-shaped portion 38 can be made the same. it can.
Thereby, the cam member 40 can be urged | biased to a neutral position reliably.

As shown in FIGS. 9 and 10, the switch case 11 is formed in a substantially box shape, and a part of the side surface and the lower surface are opened.
On the side surface facing the opened side surface, a curved hooking portion 12 is provided so as to protrude from one end side.
The hooking portion 12 is formed so that the vehicular direction indicating device 10 is pivotally supported by the mounting member 2 by being hooked on the tip of the mounting arm portion 4 of the mounting member 2.
Further, a fixing portion 13 having a curved surface that extends along the outer peripheral surface of the mounting member 2 (not shown) is extended so as to face the hooking portion 12, and the bottom surface of the fixing portion 13 (FIG. 9B). Claw portion 13a that can be engaged with the connecting member 7 is formed on the lower side.

In addition, a rectangular through hole 16 into which the cam member 40 can be inserted is formed on the upper surface side (upper side in FIG. 9A) of the side surface of the switch case 11 where the hooking portion 12 is provided.
A concave groove 16a is formed in the central portion on the lower surface side (lower side in FIG. 9A) of the through hole 16, and on the upper surface side (upper side in FIG. 9A) facing the concave groove 16a. An inclined portion 16b that is inclined toward the inside of the switch case 11 is formed at the center.

Further, at both ends of the through-hole 16, narrow pore portions 17 are formed so that the elastic rod-like portion 38 of the cam spring 36 can be inserted.
Furthermore, the pores 17 are each provided with a holding portion 18 having an upper surface and a lower surface connected to each other.
As shown in FIG. 10A, the holding portion 18 is provided at a retracted position that is closer to the inner surface side of the switch case 11 than the opening portion 16 c of the through hole 16, and the end surface of the pore portion 17 and the holding portion 18. An engagement hole 17a into which the elastic bar-shaped portion 38 of the cam spring can be inserted is formed between the two.

As shown in FIG. 10A, the switch case 11 has an inner peripheral side surface that is narrower on the rear end side (right side in FIG. 10A) than on the front end side (left side in FIG. 10A). An inclined contact surface 11d is provided at an intermediate portion thereof.
Further, plate-like moderation portions 11c are provided on the inner peripheral side surface on the distal end side so as to project symmetrically from both side surfaces.
The moderation portion 11c has a moderation surface on the rear end side, and the positioning pin 60 of the bracket 23 is in elastic contact with the moderation portion 11c. In addition, when the operation lever 19 is returned from the rotation position to the neutral position, the operation lever 19 is stopped at the neutral position.
In addition, the 2nd control protrusion 11e which protruded toward the inner side is provided in the rear end side of this contact surface 11d.

  Similarly, on the upper surface side (the upper side in FIG. 10B) of the moderation portion 11c, there are provided first restriction protrusions 11b that protrude symmetrically from both side surfaces of the inner peripheral side surface on the tip side. .

Referring to FIGS. 2 and 3 again, on the bottom surface of the lid 30 (lower side in FIG. 3), a slide member 54 slidable in the short side direction (perpendicular to the paper surface in FIG. 3) is provided at the front end side ( A movable contact 55 that is elastically biased downward is integrally provided on the lower surface side (lower side in FIG. 3) of the slide member 54.
A substantially cylindrical dimmer cam 56 and a light cam 57 each having pinion gears 56a and 57a formed at one end thereof are pivotally supported on the bottom surface (lower side in FIG. 3) of the lid 30 so that the pinion of the light cam 57 is supported. Sliders 58 each having a rack gear 58a coupled to the gear 57a formed on the bottom surface (lower side in FIG. 3) are disposed.
The upper surface of the lid 30 is provided with a support rib 31 into which a curved surface portion 23a formed on the bottom surface side of the bracket 23 is fitted, and a plurality of connecting holes 32 penetrating to the bottom surface side are provided with a slide member 54 and a dimmer cam 56. And a position corresponding to the slider 58.

Further, the terminal base 33 is provided with a plurality of plate contacts 35 constituting a dimmer switch 48 and a light switch 47 that are switched in accordance with the rotation of the dimmer cam 56 or the light cam 57 in parallel in the longitudinal direction.
A fixed contact 34 connected to the movable contact 55 of the slide member 54 constituting the turn signal switch 46 is provided on one end side of the terminal base 33.

  A procedure for assembling the vehicular direction indicating device 10 thus configured will be described.

First, the cam spring 36 is assembled to the cam member 40.
For this assembling work, the winding portion 37 of the cam spring 36 is mounted on the mounting portion 43 of the cam member 40, and the intermediate rod-shaped portion 39 connecting the winding portion 37 is engaged with the guide groove 45.

Next, while compressing the elastic rod-shaped portion 38 of the cam spring 36 inward in accordance with the widths of both ends of the through-hole 16, the distal end portion of the elastic rod-shaped portion 38 is inserted into the engagement hole 17a of the switch case 11, and the cam member is inserted. 40 is inserted into the through-hole 16.
At this time, the operating shaft portion 42 is engaged with the concave groove 16a, and the inclined surface 41a of the fulcrum shaft portion 41 of the cam member 40 is brought into contact with the inclined surface 16b.
The elastic rod-like portion 38 is inserted into the engagement hole 17a while being guided by the pore portion 17 and the holding portion 18, so that the cam member 40 is assembled to the switch case 11 without pressing the cam spring 36. Can do.

  When the cam member 40 is further pushed in, the inclined surface 41a of the fulcrum shaft portion 41 pushes up the inclined surface 16b, so that the upper surface of the switch case 11 is lifted, and the fulcrum shaft portion 41 is inserted into the long hole 11a formed in the upper surface of the switch case 11. Mated.

  As a result, both end portions of the cam spring 36 are in pressure contact with the holding portion 18, so that the side surface of the fulcrum shaft portion 41 of the cam member 40 abuts the end portion of the long hole 11 a, and the cam member 40 extends from the through hole 16. The switch case 11 is held in a state in which the tip side protrudes.

  In this way, the cam member 40 and the cam spring 36 can be integrated into the switch case 11 simply by integrating the cam member 40 and the cam spring 36 into the through hole 16 formed in the side surface of the switch case 11. .

Further, after the cam member 40 is assembled to the switch case 11, both ends of the elastic rod-shaped portion 38 of the cam spring 36 are inserted into the engagement holes 17 a, and the elastic rod-shaped portion 38 is pressed against the holding member 18. Since the fulcrum shaft portion 41 of the cam member 40 is engaged with the elongated hole 11a of the switch case 11 in a state where it is urged by the cam spring 36, the cam member 40 is in the switch case unless the cam member 40 is pushed to the tip end side. 11 will not drop out.
Therefore, it is possible to smoothly move to the assembling work of other parts without worrying about the cam member 40 falling off.

Next, as shown in FIGS. 2 to 4, the shaft portion 19 a of the operation lever 19 is fitted into the shaft hole 23 a of the bracket 23, and the operation lever 19 is integrated with the bracket 23.
The coil spring 53 is housed in the housing groove 52 b of the cancel plate 52, the bracket 23 and the cancel plate 52 are integrated, and the bracket 23 is attached to the switch case 11 so as to be rotatable about the rotation shaft 24.

At this time, since the cam member 40 is urged by the cam spring 36 and is held by the switch case 11, the operating shaft portion 42 comes into contact with the inclined rib 28.
Therefore, when the bracket 23 is incorporated into the switch case 11 and the cam member 40 is pushed in, the operating shaft portion 42 is engaged with the cam groove 26 and the bracket 23 can be completely incorporated into the switch case 11.
At this time, the cam member 40 is elastically projected at the neutral position because the operating shaft portion 42 abuts against the pressing edge portion 26a.
The cancel plate 52 is positioned such that the drive piece 52a is sandwiched between the first restriction protrusions 11b, and the drive piece 52a comes into contact with the first restriction protrusions 11b by the turning operation of the operation lever 19.

Subsequently, the lid 30 is attached to the bottom surface side of the bracket 23.
At this time, by fitting the cylindrical curved surface portion 23 a formed on the bottom surface side of the bracket 23 to the support rib 31 of the lid 30, the bracket 23 is moved in the left-right direction (vertical direction in FIG. 1). Is rotatably supported.
Further, the connecting protrusion 27 provided at the tip of the bracket 23 is connected to the slide member 54, and the rack gear 49 a of the rod 49 connected to the tip of the operation lever 19 is connected to the pinion gear 56 a of the dimmer cam 56.
Further, the engagement piece 51 of the shaft 50 is connected to the engagement recess 59 of the slider 58 protruding from the upper surface of the bracket 23.

  Finally, by attaching the terminal base 33 having the plate-like contact 35 to the bottom surface of the lid 30, the bottom surface side of the switch case 11 is closed, and the vehicle direction indicating device 10 can be unitized.

  As described above, after the cam member 40 is assembled to the switch case 11, each component can be assembled in order from the lower surface side of the switch case 11.

  Next, the structure of the cancel mechanism of the vehicle direction indicator will be described in detail with reference to FIGS. 11 to 14.

  FIG. 11A is a partial cross-sectional view showing a state when the operation lever is in a neutral position, and FIG. 11B is a partial cross-sectional view showing a state in which the operation lever is rotated counterclockwise. 11A is a partial cross-sectional view showing a state in which the steering wheel is rotated in FIG. 11B, and FIG. 12B is a state in which the steering wheel is rotated from the state shown in FIG. FIG. 13 is an enlarged view of a portion in FIG. 11B, FIG. 14 is an enlarged view of the portion a in FIG. 12B, and FIG. It is a partial cross section figure which shows the state rotated to this position.

When the operation lever 19 is located at the neutral position shown in FIG. 11A, the cam member 40 is pressed against the pressing edge portion 26 a of the cam groove 26 by the operating shaft portion 42, and the urging force of the cam spring 36 is applied. Accordingly, it is positioned on the right side in FIG.
In this state, the cam member 40 abutting portion 40 a is separated from the cancel regulating portion 6 a of the cancel cam 6.
In the neutral position, since the positioning pin 60 of the bracket 23 falls into the valley of the moderation portion 11c, the operation lever 19 is held in the neutral position unless operated with a predetermined operation force.

  Here, for example, when the operation lever 19 is rotated in the counterclockwise direction in FIG. 11A, the cam groove 26 of the bracket 23 is moved as shown in FIG. The operating shaft portion 42 of the cam member 40 moves to the release edge portion 26b of the cam groove 26 in accordance with the urging force.

Then, the positioning pin 60 rises from the central trough of the moderation portion 11c and enters the next trough, and at the same time, the drive piece 52a of the cancel plate 52 comes into contact with the first restricting protrusion 11b to operate the positioning pin 60. The turning operation of the lever 19 is stopped.
At this time, since the impact when the engaging piece 52a collides with the first restricting protrusion 11b is alleviated by the elastic force of the coil spring 53, the collision sound can be reduced.
Further, as shown in FIG. 13, the operation lever 19 is stopped at a position where a gap b is formed between the outer peripheral surface of the bracket 23 and the inner peripheral surface of the switch case 11, and thus the bracket 23 and the switch case 11. Will not collide.

When the operation lever 19 is further rotated counterclockwise from the rotation position of FIG. 12B, the drive piece 52a of the cancel plate 52 is in contact with the first restricting protrusion 11b. While the coil spring 53 compresses the bracket 23, the bracket 23 is separated from the cancel plate 52 and is rotated, and the outer peripheral surface of the bracket 23 is in contact with the second regulating protrusion 11e of the contact surface 11d. Be regulated.
In this case, since the operation lever 19 must be rotated against the urging force of the coil spring 53, a collision sound is generated when the outer peripheral surface of the bracket 23 comes into contact with the second restricting protrusion 11e. Never do.

In a state before the steering handle is rotated, as shown in FIG. 11B, the cancel restricting portion 6a of the cancel cam 6 prevents the cam member 40 from moving to the left in FIG. 11B.
Accordingly, the cam member 40 rotates in the clockwise direction around the fulcrum shaft portion 41, and the abutting portion 40a comes into pressure contact with the cancel regulating portion 6a.

Subsequently, when the steering handle is rotated, the cancel restricting portion 6a of the cancel cam 6 is separated from the contact portion 40a of the cam member 40, so that the cam member 40 is urged by the urging force of the cam spring 36 in FIG. Protrudes to the left. Therefore, the contact portion 40a can be interlocked with the cancel regulating portion 6a in the rotation direction.
Therefore, when the steering handle starts to rotate to the original position, the edge of the cancel restricting portion 6a pushes down the abutting portion 40a of the cam member 40 as shown in FIG.
Therefore, the cam member 40 rotates counterclockwise about the fulcrum shaft portion 41, and the rear end portion presses the drive piece 52 a of the cancel plate 52.
Therefore, since the bracket 23 rotates clockwise about the rotation shaft 24, the operation lever 19 returns to the original neutral position.

  The coil spring 53 is shown in FIG. 14 when the operation lever 19 remains fixed at the rotation position even though the steering handle is rotated to the original position as shown in FIG. As shown in the figure, the cancel plate 52 and the bracket 23 are not linked to each other, so that only the cancel plate 52 is rotated, thereby preventing the cancel plate 52 from being destroyed.

  As described above, the vehicular direction indicating device of the present invention is configured such that the cancel plate 52 is interlocked with the bracket 23 via the coil spring 53, and the drive piece 52 a of the cancel plate 52 is connected to the first of the switch case 11. Since the left and right pivoting operation of the operation lever 19 is stopped by abutting against the restricting protrusion 11b, an impact sound when the operation lever 19 is operated is provided without providing a buffer member such as rubber. Can be small.

  The coil spring 53 rotates only the cancel plate 52 when the steering handle is rotated and the operation lever is returned to the neutral position while the operation lever 19 in the rotation position is fixed. Since the one provided for operation is also used, it is possible to effectively mitigate the impact sound without increasing the number of parts.

  The present invention can be used in vehicle direction indicating devices such as various lever switches and combination switches having a cancel mechanism.

It is a top view which shows the state by which the vehicle direction indicator by the embodiment of this invention was attached to the surrounding part of the steering shaft. It is a disassembled perspective view of the said vehicle direction indicator. It is the 1A-1A sectional view taken on the line in FIG. (A) of a bracket is a top view, (b) is a side view, (c) is a front view. (A) is a top view of the state which assembled | attached the operation lever 19 and the cancellation plate 52 to the bracket 23, (b) is 5B-5B partial sectional drawing of FIG. (A) of a cancellation plate is a top view, (b) is a sectional side view, (c) is a bottom view. (A) of a cam member is a top view, (b) is a front view, (c) is a side view. It is a perspective view of the cam spring attached to the said cam member. (A) of a switch case is a front view, (b) is a plan view, and (c) is a bottom view. FIG. 9A is a cross-sectional view taken along the line 10A-10A in FIG. 9A, and FIG. 9B is a cross-sectional view taken along the line 10B-10B in FIG. 9B. (A) is a partial cross-sectional view showing a state when the operation lever is in a neutral position, and (b) is a partial cross-sectional view showing a state in which the operation lever is rotated counterclockwise. 11A is a partial cross-sectional view showing a state in which the steering handle is rotated in FIG. 11B, and FIG. 11B starts to rotate the steering handle to the original position from the state shown in FIG. It is a partial sectional view showing the state. It is an enlarged view of the 13a part in FIG.11 (b). FIG. 12B is a partial cross-sectional view illustrating a state in which the steering handle is rotated to the original position while the operation lever is fixed in FIG.

Explanation of symbols

1 Steering shaft 2 Mounting member 6 Cancel cam,
DESCRIPTION OF SYMBOLS 10 Vehicle direction indicator 11 Switch case 11a Long hole 11b 1st control protrusion 11c Moderation part 11d Contact surface 11e 2nd control protrusion 16 Through-hole 16a Concave groove 16b
16c opening inclined portion 17 pore portion 17a engagement hole 18 holding portion 19 operation lever 21 operation knob 23 bracket 25 projecting portion 30 lid 33 terminal base 36 cam spring 37 winding portion 38 elastic rod-like portion 40 cam member 41 fulcrum shaft portion 42 Actuating shaft portion 43 Mounting portion 52 Cancel plate 52a Driving piece 52b Housing groove 52c Relief groove

Claims (3)

A switch case that rotatably supports the operation lever;
A bracket that is integrally connected to the operation lever and rotates in the left-right direction from the neutral position according to the rotation operation of the operation lever;
A cancel plate provided to interlock with the bracket;
A cam member biased so as to be slidable and rotatable in accordance with the rotation operation of the cancel plate;
A cancel cam that rotates integrally with a steering handle, presses the tip of the cam member, and rotates the cam member to return the bracket to a neutral position via the cancel plate; ,
In a vehicle direction indicating device comprising:
A pair of drive pieces provided on an outer peripheral edge of the cancel plate and engageable with a rear end of the cam member;
An elastic member for transmitting the rotation of the cancel plate to the bracket;
A first restricting protrusion protruding from the inner peripheral surface of the switch case so as to face the drive piece;
A vehicle characterized in that when the operation lever is rotated in the left-right direction from a neutral position, the rotation of the operation lever is stopped by bringing the drive piece into contact with the first restricting protrusion. Direction indicator device. The vehicle direction indicating device according to claim 1,
Providing a second restricting protrusion projecting from the inner peripheral surface of the switch case so as to face the outer peripheral surface of the bracket;
After the drive piece comes into contact with the first restriction protrusion and the operation lever is stopped, when the operation lever is further rotated, the outer peripheral surface of the bracket and the second restriction protrusion are brought into contact with each other. Thus, the vehicular direction indicating device stops rotation of the operation lever. In the vehicular direction indicating device according to claim 1 or 2,
In either one of the cancel plate or the bracket, an arcuate accommodation groove is formed to dispose the elastic member, and on the other side, a protruding portion that protrudes into and comes out of the accommodation groove and presses the elastic member is provided.
The vehicular direction indicating device characterized in that the canceling plate is held in a neutral position by the elastic member.

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