JPH0630559Y2 - Return device for vehicle direction control lever - Google Patents

Description

TECHNICAL FIELD The present invention relates to a return device for a vehicle directional control lever.

2. Description of the Related Art As a conventional vehicular turning indicator, there is one shown in Japanese Utility Model Publication No. 50-5736 (first conventional example). As its structure, an operating lever is arranged on one side of the steering shaft, and a ratchet operated by the operating lever and responsive to rotation of the steering shaft is rotatably arranged on the opposite side. Therefore, a space around the steering shaft is required.

On the other hand, there is also a vehicle directional indicator shown in Japanese Utility Model Laid-Open No. 61-39648 (second prior art). That is, this device
The operation lever is attached to the U-shaped bracket rotatably attached to the base, the cam bodies are rotatably attached to the respective tips of the bracket, and the operation levers are urged by springs. It is provided with a moderation mechanism for stabilizing the neutral position, the left turn position and the right turn position. The operation of this device is to rotate the operating lever to the left or to the right to displace the cam body inward of the rotation path of the cancel cam, and when the steering wheel is rotating in the turning direction, the cam body is spring-loaded. The cancel cam passes through the front surface of the first cam surface of the cam body while rotating out of the trajectory of the cancel cam against the biasing force of the cancel cam, and when the steering wheel is returned, the cancel cam and the second cam of the cam body The operation lever is returned to the neutral position by the contact force with the surface.

Problem to be Solved by the Invention The first conventional example requires a large space around the steering shaft. The second conventional example requires a pair of symmetrical cam bodies on both sides centering on the shaft center of the operation lever, and a component for requiring a plurality of springs that independently bias the cam bodies. The points increase. Further, the paired cam bodies have to be assembled in the right position relative to the axis of the operation lever, which makes the assembly work troublesome and causes many failure points.

Means for Solving the Problems A base having an opening into which a steering shaft is inserted, and an operating lever having a base rotatably held at a side of the opening of the base and extending laterally. And a moderation mechanism that elastically engages a part of the operating lever, and is substantially orthogonal to a line that is arranged between the opening and the operating lever and that connects the opening and the operating lever. A sliding body held so as to slide in a direction, a V-shaped concave portion, and a protrusion that elastically engages with the concave portion, and the base portion of the operation lever faces the sliding body. Locking portions disposed on the surfaces, a pair of first cam surfaces disposed on both sides of the sliding body and along a trajectory of a cancel cam that rotates coaxially with the steering shaft, and the first cams. Consists of a pair of second cam surfaces that are bent outward from the ends of the surface Is.

When the operating lever is rotated from the neutral position to the left or right direction, the sliding body moves linearly and projects the first cam surface and the second cam surface inward of the rotation path of the cancel cam. Then, when the steering wheel is rotated in the turning direction, the sliding body is only displaced in the sliding direction, and further, after the cancel cam has passed, the V-shaped concave portion and the protruding portion of the locking portion are formed. The sliding body can be returned to its original position due to the resilient engagement of the, and when the steering wheel is rotated in the returning direction, the cancel cam comes into contact with the second cam surface of the sliding body. The operation lever can be returned to the neutral position without sliding the sliding body, and further, the parts interfering with the cancel cam can be completed with one sliding body.

Embodiment An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 is a base, and an opening 2 through which a steering shaft is inserted and a fitting hole 3 located on the side of the opening 2 are provided in the base 1.
(See FIG. 2) are formed. Reference numeral 4 denotes an operation lever, and the operation lever 4 includes a pipe 5 extending laterally,
It is composed of a lever support 7 fixed to the base of the pipe 5 to instruct the block 6 to move up and down, and a set plate 8 fixed to the upper surface of the lever support 7. A cylindrical portion 9 rotatably fitted in the fitting hole 3 is formed below the lever support 7. Note that block 6
A protrusion 11 that engages with the actuator 10 of the dimmer switch is formed in the lower part of the rotary shaft 12, and a rotary shaft 12 having a knob (not shown) at its tip is rotatably inserted in the pipe 5. Lighting switch 1 at the end of
A locking body 16 that engages with a lever 15 that is fixed to the tip of a rotary shaft 14 that operates 3 is fixed.

Next, as shown in FIG. 1, the base 1 is provided with a moderation mechanism 18 for selectively holding the operation lever 4 in a neutral position, a left turn position and a right turn position. This moderation mechanism 18 has three V-shapes on the inner surface of an arc-shaped plate 19 fixed to the base 1 by a screw 17 with the rotation axis of the operation lever 4 (axis of the cylindrical portion 9) as the center of radius. Recess 2
0 is formed, and a steel ball 21 that engages with these recesses 20 is urged by a spring 22 to be slidably provided on the lever support 7.

Thus, the slide body 23 is held by the lever support 7 which is the base of the operation lever 4 so as to be slidable in both directions with the axis of the operation lever 4 as a boundary. That is, as shown in FIG. 1, the shafts 2 erected on both sides of the lever support 7 are provided.
4 is projected from the long holes 25 formed on both sides of the sliding body 23, and the retaining rings 26 for pressing the sliding body 23 are tightened on the projecting ends of these shafts 24. Further, an engaging portion 27 for returning the sliding body 23 to the center of the lever support 7 is provided on the opposing surface of the sliding body 23 and the set plate 8. The locking portion 27 is formed in the set plate 8 and a steel ball 28 that is a protrusion that is slidably fitted to the sliding body 23, a spring 29 that biases the steel ball 28 toward the set plate 8 side. And a V-shaped recess 30 that engages with the steel ball 28. As shown in FIG. 2, a cover 31 that covers the upper space of the base 1 is attached to the base 1.
1 has an opening 32 facing the opening 2 of the base 1. The cancel cam 33 inserted from the opening 32 has projections 34 on both sides as shown in FIG. Further, the sliding body 23 is formed with a horseshoe-shaped recess 35a for preventing interference with the projection 34, and a pair of first cam surfaces 35 along the locus of the projection 34 are provided on both sides of the recess 35a. , And a pair of second cam surfaces 36 that are bent outward from the ends of the first cam surfaces 35. That is, the shape of the sliding body 23 is symmetrical with respect to the axis of the operation lever 4.

In such a configuration, the operating lever 4 is operated in the leftward or rightward turning direction from the neutral position around the axis of the cylindrical portion 9, but in either case, the steel ball 21 resiliently moves to any one of the recesses 20. Engagement stabilizes at the selected position. First
In the state shown in the drawing, the operation lever 4 is in the neutral position, and the first cam surface 35 of the sliding body 23 is located outside the locus of the projection 34 of the cancel cam 33.

Here, as shown in FIG. 3, when the operating lever 4 is rotated rightward, the operating lever 4 is stabilized at this position by the moderation mechanism 18. In this state, the first cam surface 35 and the second cam surface 36 below the sliding body 23 are displaced inwardly of the locus of the projection 34 of the cancel cam 33, but the steering wheel is moved together with the cancel cam 33. During the turning in the rotating direction, the first cam surface 35 slides the projection 34 of the cancel cam 33 while displacing the sliding body 23 downward with respect to the operation lever 4, and after the projection 34 passes, the engagement is stopped. The sliding body 23 can be returned to the center of the base of the operation lever 4 by elastically engaging the V-shaped recess 30 of the stopper 27 and the steel ball 28, and when the steering wheel is returned counterclockwise. Is the projection 34 of the cancel cam 33 and the sliding body 23.
The operation lever 4 can be returned to the neutral position by contact with the second cam surface 36 of the. The operation when the operation lever 4 is operated in the left turn direction is symmetrical and basically the same as the operation described above. As described above, only one sliding body 23 interferes with the cancel cam 33, and only one locking portion 27 for returning the sliding body 23 to the center of the operation lever 4 is required. Therefore, the number of parts can be reduced. However, the assembling work can be simplified and the number of failure points can be reduced.

The recess 30 may be formed in the sliding body 23, and the steel ball 28 and the spring 29 that engage with the recess 30 may be provided in the set plate 8. Similarly, a plurality of recesses 20 are formed in the lever support 7, and the steel balls 2 that engage with these recesses 20.
1 and the spring 22 may be provided on the base 1 side. Further, although the description has been given of the state in which the sliding body 23 is displaced in the linear direction orthogonal to the axis of the operation lever 4, the sliding body may be biased to the neutral position and rotatably held.

Effect of the Invention As described above, the present invention has a base having an opening into which a steering shaft is inserted, and a base rotatably held on the side of the opening of the base and extending laterally. An operating lever, a moderation mechanism that elastically engages a part of the operating lever, and a connection mechanism that is arranged between the opening and the operating lever and connects the opening and the operating lever. A sliding body held so as to slide in a direction substantially orthogonal to the line,
A locking portion having a V-shaped concave portion and a protrusion that elastically engages with the concave portion, the locking portion being provided on a surface facing the base portion of the operation lever and the sliding body, and the sliding body. A pair of first cam surfaces arranged on both sides along the trajectory of the cancel cam rotating coaxially with the steering shaft, and a pair of second cam surfaces that are bent outward from the ends of the first cam surfaces. Since it consists of a cam surface, the sliding body moves linearly to rotate the cancel cam between the first cam surface and the second cam surface when the operation lever is rotated leftward or rightward from the neutral position. When the steering wheel is rotated in the turning direction by projecting inward of the locus, the sliding body is only displaced in the sliding direction. Moreover, after the cancel cam has passed, the V-shaped locking portion is formed. Since the concave part and the protruding part are elastically engaged, The steering lever can be returned to the position, and when the steering wheel is rotated in the return direction, the cancel cam and the second cam surface of the sliding body make contact with each other to return the operation lever to the neutral position without sliding the sliding body. Further, the components interfering with the cancel cam can be completed with a single sliding body. Therefore, the number of components can be reduced, the assembling work can be simplified, and the failure points can be reduced.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a plan view showing a state in which a portion of the operating lever is located in a neutral position with a part cut away, FIG. 2 is a longitudinal side view, and FIG. It is a top view showing the state where the operation lever was operated to the right turn direction. 1 ... Base, 2 ... Opening, 4 ... Operating lever, 18
...... Moderation mechanism, 23 …… Sliding body, 27 …… Locking part, 28
... projection, 30 ... recess, 33 ... cancel cam, 3
5 ... First cam surface, 36 ... Second cam surface

Claims (1)

[Scope of utility model registration request] 1. A base having an opening into which a steering shaft is inserted, and an operating lever having a base rotatably held on a side of the opening of the base and extending laterally.
A moderation mechanism that elastically engages a part of this operation lever,
A slide body that is disposed between the opening and the operation lever and is held so as to slide in a direction substantially orthogonal to a line connecting the opening and the operation lever, and a V-shaped recess And a locking portion having a protrusion that elastically engages with the recess and disposed on a surface facing the base of the operation lever and the sliding body, and a locking portion disposed on both sides of the sliding body. It is composed of a pair of first cam surfaces along the trajectory of a cancel cam that rotates coaxially with the steering shaft, and a pair of second cam surfaces that are bent outward from the ends of these first cam surfaces. A returning device for a vehicle direction indicating operation lever, characterized in that