JPH08167346A - Turn flasher switch - Google Patents

Abstract

PURPOSE: To improve efficiency in incorporation work by pinching a switch operation body in which a limit mechanism is incorporated by means of a switch case in which a cam body is assembled and a terminal plate on which a slide body to be guided with a cover is mounted. CONSTITUTION: For a switch case 2, a coil spring 3 is locked at a hook part 2e with a cam body 14 pinched. Next, a pin 4a of a switch operation body in which an operation lever 6, slider 10, and a limit pin 9 are incorporated in advance is engaged with a pore 2a of the case 2, the operation body 4 is incorporated on the lower side of the case 2. Further, a fan shaped protrusion 4b of the operation body 4 is so arranged as to be fitted into a groove 5a of a terminal plate 5 in which a slide body 18 and a cover 15 are assembled from above, and the terminal plate 5 is fixed to the case 2. The slide body 18 is guided to be flexibly slid at a box body part 15a formed with the cover 15 in one body. Thereby, assembling is easily performed from one direction beneath the case 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turn flasher switch (direction indicator lighting device) for automobiles and the like.

[0002]

2. Description of the Related Art FIG. 5 is an exploded perspective view showing a conventional turn flasher switch. The switch actuation body 21 is rotatably held by fitting pins 21a and 21b provided above and below the hole 22a of the cover 22 and a hole 23a provided on the upper side of the switch case 23, respectively. The cover 22 is fixed to the switch case 23 by means such as screw tightening. In addition, the contact point 25 of the switch
The terminal plate 24 having a contact piece 2 that contacts the contact portion 25.
After the slide body 27 in which 6 is inserted is inserted into the guide portion 23b provided on the lower surface of the switch case 23, it is fixed to the switch case 23 by means such as screwing. As described above, the conventional turn flasher switch is constructed by assembling the switch constituent members from the upper and lower two directions of the switch case 23.

[0003]

However, in the above conventional turn flasher switch, the switch case 23 is used.
Since the switch actuation body 21 and the cover 22 are assembled on the upper side of the above, and the sliding body 27 and the terminal board 24 are assembled on the lower side, when the turn flasher switch is assembled,
Since the switch case 23 needs to be turned upside down, there is a problem that the workability of assembling is poor.

The present invention is intended to solve such a conventional problem, and an object thereof is to provide a turn flasher switch capable of efficiently performing an assembling work.

[0005]

In order to solve the above-mentioned problems, the present invention relates to a cancel cam which is interlocked with the rotation of a steering shaft and which has a protrusion on its periphery, and a first or first through a neutral position by an operating lever. A switch actuating body that is rotated to the second operating position; a moderation mechanism that is incorporated in the switch actuating body and holds the switch actuating body in the first or second operating position; When the switch operating body is in the first or second operating position, the switch operating body is moved forward to a position where it can engage with a protrusion provided around the cancel cam, and the switch operating body is in the neutral position. A cam body that retracts to a position that is not engaged with the protrusion and the cam body that guides the forward and backward movements of the cam body, and supports the switch operating body from the upper surface side thereof. A switch case provided with a side pivot bearing portion, a terminal plate having a lower surface side pivot bearing portion supporting the lower surface side of the switch actuation body and having a contact portion of a flasher switch, and a contact piece contacting the contact portion A sliding body, a cover fixed to the terminal plate in a state where the sliding body is housed, guiding the sliding body in the sliding direction, and locking means for locking the switch case and the terminal plate to each other. The switch case and the terminal plate are locked in a posture in which the switch operating body is rotatably held by each pivot bearing.

In addition to the above construction, a biasing means for biasing the cam body in the forward direction is locked to the switch case, and the biasing means is provided on the upper surface of the switch case above the switch case. It is provided with a slit hole for further assembling.

[0007]

According to the above construction, the turn flasher switch is assembled by sandwiching the switch actuation body incorporating the moderation mechanism by the switch case assembled with the cam body and the terminal plate attached with the sliding body by the cover. The turn flasher switch can be installed from one direction on the lower side of the switch case, for example, and the work efficiency is improved.

Further, by providing a slit hole for assembling the biasing means from the upper side of the switch case on the upper surface of the switch case, the biasing means can be mounted also from the upper side of the switch case, and further assembled. Work efficiency is improved.

[0009]

FIG. 1 is an exploded perspective view showing a turn flasher switch according to an embodiment of the present invention, FIG. 2 is a sectional view of the turn flasher switch, and FIGS. 3 and 4 show other embodiments of the present invention. It is a perspective view of a switch case of the turn flasher switch.

In FIGS. 1 and 2, reference numeral 1 denotes a cancel cam which is interlocked with the rotation of a steering shaft (not shown), and has two protrusions 1a formed on the outer peripheral portion thereof. Reference numeral 2 denotes a switch case which is arranged at the peripheral position of the cancel cam 1 and whose lower surface is opened. Two switch hooks 2e are provided on the upper side of the switch case, and a coil spring 3 as an urging means is locked across both hooks 2e. Then, the hook portion 2e is assembled at a lower position.

Reference numeral 4 denotes a switch operating body pin 14a. The switch operating body 4 is accommodated in the switch case 2, and the pin 4a is provided on the upper portion of the switch case 2 and serves as an upper surface side pivot bearing portion 2a. Further, the fan-shaped projection 4b provided on the lower portion is rotatably supported by fitting with the groove 5a as the lower surface side pivot bearing portion provided on the terminal plate 5. 6 is an operating lever,
It is integrally attached to the switch operating body 4 with a pin 7. 4d is a hole formed at the tip of the switch actuator 4,
A moderation pin 9 biased outward by a spring 8 is inserted. Reference numeral 2f denotes a moderation concave-convex portion formed on the inner surface of the tip portion of the switch case 2, and the moderation pin 9 comes into contact with the moderation concave-convex portion 2f.

Reference numeral 10 denotes a slider, which has a hole 10a in the rear portion thereof, the spring 11 and the sphere 12 are accommodated in the hole 10a, and a recess 4c provided in the upper portion of the switch actuating member 4
It is incorporated into the switch actuation body 4 so that the sphere 12 is arranged in the.

Reference numeral 14 denotes a cam body, which has a pin 14a serving as a fulcrum of rotation at an upper portion and a pin 14b formed along a V-shaped projection 4e provided on an upper surface of the switch actuating body 4 at a lower portion. are doing. The pin 14 on the upper surface side of the cam body 14
a is inserted into a long hole 2b provided on the upper surface of the switch case 2, and the concave groove 1 provided on the lower surface side of the cam body 14 is provided.
The coil spring 3 is inserted through 4c and held on the back surface of the upper surface of the switch case 2.

The terminal plate 5 is provided with a plurality of contact points 5b, and on the terminal plate 5, a dimmer switch device 13 composed of a leaf spring or the like for switching the headlight up and down is also provided in parallel. Reference numeral 15 is a cover fixed to the upper surface of the terminal plate 5 by a method such as press fitting, and is a box body portion 15a for slidably guiding the sliding body 18 sliding on the contact portion 5b.
And a lid portion 15b that covers the upper surface of the dimmer switch device 13 are integrally formed. The sliding body 18 is internally provided with a contact piece 16 that comes into contact with the contact portion 5b of the terminal plate 5 to generate a turn-flasher lighting signal.
A recess 18a for accommodating the coil spring 17 is formed.
As a result, the contact piece 16 is biased toward the contact portion 5b. In addition, the sliding body 18 is formed with a pin 18b projecting upward from the box body portion 15a of the cover 15, and engages with a U-shaped groove 4f provided in the lower portion of the switch operating body 4 to allow the switch operating body 4 to move. It slides as it rotates.

Further, the terminal plate 5 is formed with a plurality of projecting portions 5c as laterally projecting locking means, and the projecting portions 5c of the terminal plate 5 are formed in the plurality of hole portions 2c formed in the lower portion of the switch case 2. It is designed to be locked.

Next, the assembling procedure and operation of this turn flasher switch will be described. Switch case 2
The coil spring 3 is locked to the hook portion 2e while the cam body 14 is sandwiched between the coil spring 3 and the cam body 14 in advance.
Is assembled. Then, the switch actuation body 4 in which the operation lever 6, the slider 10, and the moderation pin 9 are incorporated in advance.
However, it is incorporated in the lower side of the switch case 2 so that the hole 2a and the pin 4a of the switch actuating body 4 engage with each other. Further, while arranging the terminal plate 5 to which the sliding body 18 and the cover 15 are assembled on the lower side thereof so that the fan-shaped projection 4b of the switch operating body 4 is fitted into the groove 5a, the terminal plate 5 is projected. The portion 5c is fitted into the hole 2c of the switch case 2 (so-called snap fit or the like) and fixed to the switch case 2. In this way, the turn flasher switch can be easily assembled from the lower one direction of the switch case 2.

The turn flasher switch incorporated in the above procedure is fixed to the first or second operating position by the moderation convex / concave recess 2f and the moderation pin 9 by the swinging motion of the operation lever 6 to the left and right. At the same time, the sliding body 18 slides together with the switch operating body 4, and a turn-flasher lighting signal is generated between the contact piece 16 and the contact 5b housed in the sliding body 18. In this state, since the V-shaped protrusion 4e moves together with the switch actuation body 4,
In the cam body 14, while the pin 14b extends along the V-shaped projection 4e, the protrusion 1a of the cancel cam 1 and the tip portion 14d of the cam body 14 are switched by the biasing force of the coil spring 3.
It moves forward to a position where it can come into contact through a hole 2d provided in the front part of the.

When the cancel cam 1 is rotated by the rotation of the steering shaft, the cam body 14 moves to the pin 14a.
The projection 1 of the cancel cam 1 has a hole 2a into which is inserted and a groove 5a into which a fan-shaped projection 4b is inserted as a fulcrum.
The force acting between a and the tip portion 14d of the cam body 14 is transmitted to the slider 10, and the moderation pin 9 is disengaged from the moderation convex / concave recess 2f of the switch case 2, whereby the switch actuation body 4 returns to the neutral position, The turn flasher switch is turned off.

Further, in this embodiment, the dimmer switch device 1 is used.
3 is arranged side by side on the terminal plate 4, and as the cover 15, a box portion 15a for slidably guiding the sliding body 18 and a lid portion 15b for covering the upper surface of the dimmer switch device 13 are integrally formed. Therefore, an increase in the number of parts can be prevented.

FIGS. 3 and 4 show another embodiment of the present invention which is further improved. A slit hole for assembling the coil spring 3 on the upper surface of the switch case 2 from the upper side of the switch case 2 is shown. 2 g are formed. As a result, the slit hole 2g is inserted from the upper side without passing from the lower side to the upper surface of the switch case 2 whose thickness is relatively large.
Since it is possible to assemble the coil spring 3 through the through, the assembling work becomes easier.

Here, in FIG. 3, the coil spring 3 is assembled in a straight shape. In this case, the pin 14a of the cam body 14 and the hole 2b of the switch case 2 are used.
The width of the slit hole 2g may be smaller than the dimension of. Further, when the coil spring 3 needs to have a certain thickness in design, the elasticity of the coil spring 3 is utilized by arranging the slit 2g behind the hole 2 of the switch case 2 as shown in FIG. Can be incorporated.

[0022]

The present invention has the following effects, as is apparent from the above-mentioned embodiments. 1. The cover that guides the sliding body that constitutes the flasher switch is fixed to the terminal board, and the pivot plate bearing for the switch actuator is provided on the terminal board, so that the switch can be assembled from only one direction, such as from below. Therefore, the assembling workability can be improved.

2. By providing the slit hole on the upper surface of the switch case, the biasing means such as the coil spring can be easily assembled from the upper surface of the switch case.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a turn flasher switch according to an embodiment of the present invention.

FIG. 2 is a sectional view of the same turn flasher switch.

FIG. 3 is a perspective view of a switch case of a turn flasher switch according to another embodiment of the present invention.

FIG. 4 is a perspective view of a switch case of a turn flasher switch according to another embodiment of the present invention.

FIG. 5 is an exploded perspective view of a conventional turn flasher switch.

[Explanation of symbols]

 1 Cancel Cam 1a Projection 2 Switch Case 2a Hole 2b Long Hole 2c Hole (Locking Means) 2e Hook Part 3 Coil Spring (Biasing Means) 4 Switch Actuator 4a Pin 4b Projection 5 Terminal Plate 5a Groove 5b Contact Point 5c Projection Section (locking means) 6 operation lever 14 cam body 14a pin 15 cover 16 contact piece 18 sliding body

Claims (2)

[Claims] 1. Interlocking with rotation of a steering shaft,
A cancel cam having a protrusion on its periphery, a switch actuating body which is rotated by an operating lever to a first or second operating position via a neutral position, and a switch actuating body which is incorporated in the switch actuating body Alternatively, a moderation mechanism for holding the switch operating body in the second operating position and an upper surface side of the switch operating body are provided, and are provided around the cancel cam when the switch operating body is in the first or second operating position. A cam body that advances to a position where it can engage with the projection and retracts to a position that does not engage the projection when the switch operating body is in the neutral position, and the cam body is assembled to perform the forward and backward movements. A switch case provided with an upper surface side pivot bearing portion for guiding and supporting the switch operation body from the upper surface side thereof, and a lower surface side support supporting the switch operation body from the lower surface side of the switch operation body. A terminal plate having a bearing portion and a contact portion of a flasher switch, a sliding body having a contact piece in contact with the contact portion, and a sliding body fixed in the terminal plate with the sliding body accommodated therein. A cover that guides in the sliding direction and a locking unit that locks the switch case and the terminal plate with each other are provided, and the switch case and the terminal plate are rotatably attached to the switch actuation body at each pivot bearing portion. A turn flasher switch that locks in a held position. 2. A switch case is provided with an urging means for urging the cam body in the forward direction, and a slit hole for assembling the urging means on the upper surface of the switch case from above the switch case. The turn flasher switch according to claim 1, further comprising: