JPS6338510Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an improvement of the operating device for a turn signal switch.The purpose of the invention is to reduce the size of the operating device, and to make it possible to integrate the moderation mechanism and the cancel mechanism, so that the device can be rationally constructed. The purpose of the present invention is to provide a turn signal switch operating device that can be used to operate a turn signal switch.

An embodiment of the present invention will be described below based on the drawings.

Reference numeral 1 denotes a body attached to a column cover through which a steering shaft passes, and a bearing tube 2 is protruded from the lower right side of this body, and a pivot shaft 3 is protruded from the upper left side. Reference numeral 4 denotes a bracket to which a lever 5 for operation is attached, and a fulcrum shaft 6 is protruded from the lower right side of this bracket, and a transmission shaft 7, which is a rotation transmission member, is protruded from the upper left side. Such a bracket 4 can be constructed by fitting the fulcrum shaft 6 into the bearing sleeve 2.
It is rotatably arranged on the body 1. Then, by rotating the bracket 4 from the neutral position shown in FIG. 1 using the lever 5 in the directions of arrows A and B, the switch mechanism 8 provided between the bracket 4 and the body 1 is actuated. The right and left turn indicators are configured to blink. 9 connects the transmission shaft 7 to the bracket 4 with respect to the fulcrum shaft 6.
This is a moderation guide surface section that is provided upright on the opposite side of the bracket 4, that is, along the right edge of the bracket 4, and has stopper pieces 9a and 9b protruding from both sides thereof, and both stopper pieces 9a and 9b. A trough 10 serving as a neutral position engagement part, a trough 11 serving as a right turn instruction position engagement part, and a trough 12 serving as a left turn instruction position engagement part are formed on the inner wall surface between 9b. A protrusion 1 is provided at the boundary between the troughs 11 and 12 on both sides.
3 and 14 are installed protrudingly. Reference numeral 15 denotes a ratchet lever as an operating body, which is disposed on the bracket 4 so that the pivot shaft 3 and the transmission shaft 7 are inserted into a long hole 16 formed in the central portion, and is moved in conjunction with the rotation of the bracket 4. It rotates around the pivot 3 located on the opposite side of the fulcrum shaft 6 with respect to the transmission shaft 7, and independently rotates in the direction between the pivot 3 and the transmission shaft 7, that is, the elongated hole 1.
It is designed to be able to slide in the direction of extension of 6. Reference numerals 17 and 18 denote a pair of triangular claws that are abutted parts formed at one end of the ratchet lever 15. When the ratchet lever 15 rotates in the direction of arrow C from its original position shown in FIG. When the ratchet lever 15 rotates in the direction of arrow D from its original position, the other triangular claw 18 is positioned within the rotation trajectory of the cancel pin 19, which is a protrusion for cancelling. be done. Reference numeral 20 denotes a holding hole formed at the other end of the ratchet lever 14, in which an engaging element 21 and a compression spring 22 for elastically contacting the engaging element 21 with the moderating guide surface section 9 are housed. The lever 5 (bracket 4) is held at the neutral position O by engaging with the portion 10. When the lever 5 is rotated from the neutral position O to the right turn instruction position _TR , the bracket 4 rotates in the direction of arrow A, and in conjunction with this, the ratchet lever 15 rotates in the direction of arrow C. 2
1 is pulled out from the trough 10 and engaged with the trough 11 to hold the lever 5 at the right turn instruction position _TR . Also lever 5
When the bracket 4 is rotated from the neutral position O to the left turn instruction position T _L , the bracket 4 rotates in the direction of arrow B, and in conjunction with this, the ratchet lever 15 rotates in the direction of arrow D, so that the engager 21 10, engages with the valley 12, and moves the lever 5 to the left turn instruction position T _L
to hold. Stoppers 23 and 24 are formed protruding from the bracket 4 and limit the rotational limit positions of the bracket 4 in the direction of arrow A and the direction of arrow B by coming into contact with the pivot 3.

Next, we will explain the effects when changing the driving lane to the right or left, and when turning left or right. However, changing lanes and turning to the right is the same as changing lanes and turning to the left. So,
Here, only the former case will be explained, and the explanation of the latter will be omitted.

First, when changing the driving lane to the right, the lever 5 is placed and rotated in the direction of the right turn instruction position _TR , which causes the bracket 4 to rotate in the direction of arrow A and the ratchet lever to rotate. 15 rotates in the direction of arrow C, and in conjunction with this, the engager 21 slides on the slope of the valley 10 toward the valley 11. Then, when the bracket 4 is rotated by a predetermined amount and the engager 21 comes into contact with the protrusion 13 (see Fig. 3), the operating resistance of the lever 5 will suddenly increase. By stopping the turning operation of the lever 5 and holding it in that position, the right turn signal is maintained in the operating state.If you release the lever 5 after changing the driving lane, the engagement element 2
Due to the elastic force of the compression spring 22 which attempts to slide down the ratchet lever 15 along the slope of the trough 10, the ratchet lever 15 and the bracket 4 are rotated in the direction of their original positions and returned to the original state shown in FIG. .

Next, the case of right turn will be explained. In this case as well, the lever 5 is placed with the hand and rotated in the direction of the right turn instruction position _TR in the same manner as described above, and as a result, the bracket 4 is rotated in the direction of the arrow A in the same manner as described above. The ratchet lever 15 rotates in the direction of arrow C. When the bracket 4 is rotated by a predetermined amount, the engaging element 21 comes into contact with the protrusion 13 and the operating resistance of the lever 5 increases, but in the case of a right turn, the lever 5 is rotated further regardless of this. . Then, due to the subsequent rotation of the bracket 4 and the ratchet lever 15, the engager 21 is moved to the projection 1.
3 and falls into valley 11. Therefore, even if you release your hand from the lever 5 after this, the lever 5 (bracket 4) is held at the right turn instruction position _TR by the engagement between the engaging element 21 and the trough 11, and the right turn signal is activated. (See Figure 4). and,
When the steering wheel is rotated in the turn direction to turn right, the cancel pin 19 contacts the triangular pawl 17 of the ratchet lever 15 from the direction of arrow E, but the ratchet lever 15 contacts the stopper piece 9a that functions as a stopper, or Since the stopper 23 is in contact with the pivot 3,
Since the rotational force acting on the ratchet lever 15 in the direction of the arrow C is received by them, the ratchet lever 15 slides away in the direction of the arrow F against the spring force of the compression spring 22 and escapes from the cancel pin 1.
9 is allowed to pass (see the two-dot chain line in Figure 4). After completing the right turn, rotate the steering wheel in the return direction, and the cancel pin 19 will now engage the triangular pawl 1.
7 from the direction of the arrow G, the ratchet lever 15 receives the rotational force in the direction of the arrow D and rotates in the same direction, and the bracket 4 receives the rotational force of the ratchet lever 15 via the transmission shaft 7 and rotates in the direction of the arrow D. Rotate in direction B. Such ratchet lever 1
5 and the bracket 4, the engaging element 21 comes out of the trough 11 and fits into the trough 10, whereby each member returns to its original state as shown in FIG.

According to the above configuration, when the lever 5 is rotated, the moderation guide surface portion 9 moves around the transmission shaft 7 with respect to the fulcrum shaft 3.
The moderation guide surface section The relative stroke between 9 and the engager 21 can be much larger than a single stroke. Therefore, even when the entire device is downsized, it is possible to secure a sufficient stroke necessary to effectively operate the moderation mechanism consisting of the moderation guide surface portion 9, the engager 21, etc., and the entire device can be It can be compactly integrated, for example, on the right side of the column cover. Regarding this point, in conventional devices of this type, a moderation mechanism is provided between the lever and the body that supports the lever, so when the entire device is downsized, it becomes difficult to ensure the stroke of the moderation movement. There were drawbacks that prevented its miniaturization.

In addition, in the conventional type, a cancel mechanism for returning the bracket from the right-turn and left-turn indication positions to the neutral position had to be provided completely separately from the moderation mechanism, but with the above configuration, the cancel mechanism Since the engaging element 21 of the moderation mechanism can be provided on the ratchet lever 15, the cancel mechanism and the moderation mechanism can be integrated and can be configured rationally.

As is clear from the above description, the present invention can provide a turn signal switch operating device that can be miniaturized and can be rationally configured by integrating a cancel mechanism and a moderation mechanism. It is something.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view, FIG. 2 is a vertical sectional view, and FIGS. 3 and 4 are plan views for explaining the operation. In the figure, 1 is the body, 3 is the pivot, 4 is the bracket, 5 is the lever, 6 is the fulcrum shaft, 7 is the transmission shaft (rotation transmission member), 8 is the switch mechanism, 9 is the moderation guide surface, 9a, 9b 10 is a trough (an engaging part for a neutral position), 11 is a trough (an engaging part for a right turn instruction position), 12 is a trough (an engagement part for a left turn instruction position), 15 is a stopper. Ratchet lever (operating body), 1
7 and 18 are triangular claws (abutted parts), 19 is a cancel pin (protrusion for canceling), 21 is an engaging element, 2
2 is a compression spring (spring means), and 23 and 24 are stoppers.

Claims (1)

[Scope of utility model registration request] A bracket is provided so as to be rotatable about a fulcrum shaft by a lever, and a bracket is connected to this bracket via a rotation transmission member, and is connected to the rotation transmission member with respect to the rotation transmission member in conjunction with the rotation of the bracket. an actuating body that is rotatable about a pivot provided on the opposite side and movable in a direction between the rotation transmission member and the pivot; is provided on the opposite side and has an engaging part for a neutral position and an engaging part for right turn and left turn support positions on both sides thereof; an engaging element that is in elastic contact with the surface portion and holds the bracket in the neutral position, right turn instruction position, and left turn instruction position by engagement with each of the engaging parts; When the bracket is rotated to each indicated position, it is located within the rotation locus of the canceling protrusion that rotates together with the steering wheel, and when the steering wheel rotates in the turn direction and then returns to its original position, the bracket comes into contact with the canceling protrusion to bring the bracket to its neutral position. a contact portion that rotates the actuating body back to its original position when the actuator rotates back to the original position; and a protrusion for canceling that is provided on the bracket and rotates the bracket to the right-turn and left-turn indication positions. When the canceling protrusion comes into contact with the abutted part located within the rotation locus of the steering wheel as the steering wheel rotates in the turn direction, the actuating body moves in a direction between the rotation transmitting member and the pivot. An operating device for a turn signal switch, comprising a stopper that receives rotational force applied to an actuating body in an escape manner.