JPH03262743A - Canceling device for turn signal - Google Patents

Abstract

PURPOSE:To operate an operation lever regardless of the position of a steering wheel by bringing a ratchet section into contact with a cancel cam, and rotating a cam cylinder when the operation lever is operated to the right turn or left turn direction position from the neutral position in a specific state. CONSTITUTION:When a steering wheel 28 is slightly rotated to the left turn direction, for example, prior to the action of an operation lever 9, a cancel cam 21 is moved in the rotation locus of ratchet sections 8a of a ratchet 8. When the operation lever 9 is rotated to the left turn direction position L, for example, from the neutral position N under this condition, the ratchet sections 8a are brought into contact with the cancel cam 21, and a cam cylinder 20 is rotated against a spring member. The ratchet sections 8a are moved to the cancel position without being impaired by the cancel cam 21. The operation lever 9 can be operated to the right turn or left turn direction position L, R from the neutral position L regardless of the position of the steering wheel 28.

Description

[Detailed Description of the Invention] [Purpose of the Invention (Industrial Application Field) The present invention provides an automatic control system for automatically controlling a control lever operated to instruct the direction of a turn of a vehicle by rotating a steering wheel in the opposite direction. This invention relates to a turn signal canceling device that automatically returns a turn signal to a neutral position.

(Prior Art) A conventional turn signal canceling circuit is configured as shown in FIG. That is, a cam cylinder body 101 having two cancel cams 100, 100 is provided concentrically with the steering shaft, and this cam cylinder body]0
A bracket 103 having arms 102 and 102 is provided to surround the bracket 103, and a ratchet 104 is disposed at the tip of the bracket 103, and both ends of the bracket 103 are connected to the arm 1.
It is engaged with the tip of 02.102. Furthermore, a valley portion 105a for a neutral position (N) is provided at the front portion of the bracket 103.
, a moderation wall 105 having a trough 105b for the right-turn position (R) and a trough 105c for the left-turn position (L) is provided, and a holder part 106 is provided at the tip of the bracket 103.
A steel ball 107 and a compression spring (not shown) are arranged in this holder portion 106, and the spring force of the compression spring brings the steel ball 107 into contact with the moderation wall 105 at one pressure, and both ends of the ratchet 104 are connected to the arm 102°102.
It is adapted to be elastically engaged with the tip of the Then, move the bracket 103 to the neutral position (
N) to right turn direction f (R) or left turn direction position (L)
When the cancel cam 10 of the cam cylinder body 101 is rotated, one of the ratchet parts 104a, 104a at both ends of the ratchet 104 is rotated by the steering wheel.
Cancellation of the cam cylinder 101 rotated by the steering wheel when the steering wheel is moved to the cancel position within the rotation trajectory of 0 and rotated in the rotational direction of the operating lever for more than a certain amount and then rotated in the opposite direction. Ratchet part 1 with cam 100 in the cancel position
04a to return the operating lever together with the bracket 103 to the neutral position (N).

(To be solved by the invention: ll, l) In the above configuration, the operating lever is moved from the neutral position (N) to the right turn direction position (
R) or left turn direction position (L), for example,
As shown in FIG. 10, let us consider a state in which the steering wheel is rotated by a slight angle in the left-turn direction and then fixed prior to the operation of the control lever. In this case, since the cancel cam 100 of the cam cylinder body 101 is located within the rotation locus of the ratchet portion 104a, in this state, the bracket 103 is moved from the neutral position (N) to the left turning direction position via the operating lever. If you try to rotate it in the direction of arrow A to the (L) side, the ratchet part of the ratchet 104 ] 0
4a comes into contact with the cancel cam 100 of the cam cylinder body 101 which is in a fixed state, and the rotation of the bracket 103, that is, the operating lever is prevented and does not rotate to the left-turn direction position (L) shown by the two-dot chain line. Therefore, there is a problem in that when the rotational force on the operating lever is removed, such as by removing the hand from the operating lever, the operating lever is not held at the left-turn direction position (L) but returns to the neutral position (N).

The present invention has been made in view of the above-mentioned circumstances, and its object is to turn the operating lever from the neutral position to the right-turn position or left-turn position in a reliable manner regardless of the position of the steering wheel, that is, the position of the cancel cam. To provide a signal cancellation device.

C. Constitution of the Invention (Means for Solving the Problem) The turn signal canceling device according to claim 1 is operated by an operation lever from a neutral position to a right turn direction position and a left turn direction position, and is moved to a cancellation position in accordance with the operation. A mechanism part having a ratchet part to be moved is provided, a cam guide member is provided which is rotated by a steering wheel and has a driving part on the outer periphery, a cancel cam is provided on the outer periphery, and a cam guide member having a predetermined angle on the inner periphery is provided. A cam cylinder having driven parts for rotation and left rotation, and positioning a driving part of the cam guide member between these driven parts for right rotation and counterclockwise rotation, is rotated around the outer periphery of the cam guide member. mating possible,
The cam barrel is always held between the cam barrel and the cam guide member so that its driving part is located between the clockwise rotation driven part and the counterclockwise rotation driven part, and the cancel cam is connected to the cancel cam. The cam cylinder is characterized by the interposition of a spring member that allows the cam cylinder to rotate when it comes into contact with a ratchet portion in a certain position.

The turn signal canceling device according to claim 2 is provided with a mechanism section having a ratchet section and operated from a neutral position to a right turn direction position and a left turn direction position by an operation lever, and a mechanism section that is rotated by a steering wheel and moved to a cancel position on an outer periphery. A cam cylinder body provided with a cancel cam that comes into contact with a certain ratchet part is provided, and is characterized in that the cancel cam is formed to be elastically deformable.

(Function) According to the turn signal canceling device according to claim 1, when the steering wheel is rotated by a certain angle and the cancel cam of the cam cylinder is located within the rotation locus of the ratchet part, the mechanism part When the operating lever is operated from the neutral position to the right-turning position or the left-turning position, the ratchet portion contacts the cancel cam of the cam cylinder and rotates the cam cylinder against the elastic force of the spring member. As a result, the ratchet portion is allowed to pass, and the operating lever is operated to the right-turning position or the left-turning position.

According to the turn signal canceling device according to claim 2, when the steering wheel is rotated by a certain angle and the cancel cam of the cam cylinder is located within the rotation locus of the ratchet portion, the operation lever of the mechanism portion is When the is operated from the neutral position to the right-turn direction position or left-turn direction position, the ratchet part contacts the cancel cam of the cam cylinder body and elastically deforms it, allowing passage of the ratchet part, so that the operation The lever is operated to the right turn direction position or the left turn direction position.

(Embodiment) A first embodiment of the present invention will be described below with reference to FIGS. 1 to 7.

First, in FIGS. 2 and 3, 1 is a switch body, and a steering shaft 3 passes through a guide tube 2 formed in the center thereof. A flange portion 2a is formed at the upper end of the guide tube 2 so as to protrude outward. 4 is the mechanical part,
This includes a plastic movable bracket 6 which is rotatably supported on the switch body 1 via a shaft 6a and has a pair of arms 5.5 extending so as to surround the guide tube 2.
Both ends of the arms 5, 5 are swingably engaged with locking parts 7, 7 at the tips of the arms 5, 5, and ratchet parts 8a are attached to both ends.
, 8a, an operating lever for rotating the movable bracket 6 in the direction of arrow A and the direction opposite to arrow A, and the movable bracket 6 is moved from the neutral position (N) to the right turn instruction position f.
it CR) and a moderation mechanism 10 that maintains the left turn instruction value if (L). The moderation mechanism 10 is formed in the switch body 1 and has three valleys 11a to 11c.
a moderation wall 11 having a holder portion 12 formed at the tip of the movable bracket 6, a steel ball 13 fitted into the holder portion 12, and a center portion of the ratchet 8 between the steel ball 13 and the center portion of the ratchet 8. Compression fill spring 1 interposed between
4, and the spring force of this compression coil spring 14 presses the steel ball 13 against the moderation wall 11, and both ends of the ratchet portion 8 press against the locking portions 7, 7 of the arm 5.5. It is designed to be engaged.

Now, in FIGS. 1 and 4, reference numeral 16 denotes a cam guide member rotatably fitted to the outer periphery of the guide tube 2, and two protrusions 17.7 serving as driving parts are provided on the outer periphery of the cam guide member. At the same time, two recessed parts 18, 18 are formed in the middle part of these protrusions 17, 17, and the flange part 1 at the upper end
Two connecting pins 19, 19 are provided to protrude upward from 6a. Reference numeral 20 denotes a cam cylinder rotatably fitted to the outer circumference of the cam guide member 16, the upper end of which is connected to the cam guide member 1.
The lower end portion contacts the flange portion 16b of the cam guide member 16, and two cancel cams 21, 21 are protruded from the outer peripheral portion. Further, on the inner peripheral portion of the cam cylinder body 20, both side portions 17a of each protrusion 17 of the cam guide member 16 are provided.

A left rotation bearing part 22 and a right rotation bearing part 23, which are driven parts, are formed so as to be spaced apart from the cam guide member 17b, and two recesses corresponding to the recessed parts 18 and 18 of the cam guide member 16 are formed. Portions 24, 24 are formed. Reference numeral 25 denotes a spring member which is housed so as to span both the concave portion 18 and the concave portion 24 and is interposed between the cam cylinder body 20 and the cam guide member 16, and has spring receivers 26 at both ends. The side part 17a of the protrusion 17 and the left rotation receiver are normally connected to the part 22.
The distance between the sides],, 7 b and the clockwise rotation receiver is part 23
The distance between the two is equal to the middle, and is held in its original position.

The cam guide member 16 described above is biased upward by a spring 27 interposed between the cam guide member 16 and the switch body 1, so that the stepped portion 16c at the upper end of the inner circumference abuts against the flange portion 2a of the guide tube 2 ( 3), the steering wheel 28 is attached to the steering shaft 3 and its connection holes 28a, 28a
When the connecting pins 19, 19 are fitted, they move downward against the elastic force of the spring 27 and can rotate integrally with the steering wheel 28 (see FIG. 4).

Next, the operation of the above configuration will be explained.

When the operating lever 9 is in the neutral position (N), the ratchet 8 is also in the neutral position shown in FIG. It is outside the rotation trajectory. Therefore, even if the steering wheel 28 is rotated, the cam guide member 16 and the cam cylinder body 20 are rotated accordingly, and the ratchet 8 is not affected in any way.

The operating lever 9 moves from the neutral position (N) to the right turn direction 1 (R
) and to the left-turn direction position (L). Since the operating principle is the same in both cases, the case in which the rotation operation is performed to the left-turn direction position (L) will be described below as a representative example.

When the operating lever 9 is rotated from the neutral position (N) to the left turn position (L) in the direction of arrow A, the steel ball 13 of the moderation mechanism 10
are the valleys 11a of the moderation wall 11, 1. Climb over the peaks between the ICs, engage with the valleys 11C for the left turn direction position, and press the operating lever 9.
is held at the left turn direction position (L). As a result, one of the ratchet parts 8a, 8a of the ratchet 8 is moved to the cancel position shown by the solid line in FIG. Here, when the steering wheel 28 is rotated in the left-turning direction, the cam guide member 16 and the cam cylinder body 20 are also rotated in the same direction, in the direction of arrow B, and the cancel cam 21 comes into contact with the one ratchet part 8a, and the cam Rotation of the cylinder 20 is prevented.

As a result, the cam guide member 16 is rotated while compressing the spring member 25, so that the side portion 17a of the protrusion 17 is stopped by the counterclockwise portion 22, and the cam guide member 16 is rotated while compressing the spring member 25.
6 and the cam cylinder body 20 are again rotated together. Furthermore, when the steering wheel 28 is rotated,
The cancel cam 21 is the ratchet part 8a of the ratchet 8
Press and move the ratchet 8 with arrow C as shown by the two-dot chain line.
The cam cylinder body 20 passes through the ratchet portion 8a and reaches the position shown by the two-dot chain line without being moved in the direction, and the cam cylinder body 20 is returned to its original position by the elastic force of the spring member 25.

Next, when the left turn is completed and the steering wheel 28 is rotated to the right from this state, as shown in FIG.
The cam guide member 16 and the cam cylinder body 20 are also rotated in the same direction (opposite the direction of arrow B), and the cancel cam 2
1 comes into contact with the one ratchet portion 8a, and the cam cylinder body 2
0 rotation is prevented. As a result, the cam guide member 1
6 is rotated while compressing the spring member 25, and the side part 17b of the protrusion 17 comes to be stopped by the clockwise rotation receiver part 23, and the cam guide member 16 and the cam cylinder body 20 are rotated together again. will be done. Furthermore, when the steering wheel 28 is rotated, the cancel cam 21 presses the ratchet part 8a of the ratchet 8, biasing the movable bracket 6 in the opposite direction of arrow A, and the steel ball [3] of the moderator FR10 is activated by the compression coil spring. 14 against the spring force of the moderation wall] 1 between the troughs 11C and 11a and reach the left turn direction position (L
) to the neutral position (N), and the operating lever 9 is returned to the neutral position (N). Then, the cam cylinder body 20 is returned to its original position by the elastic force of the spring member 25.

Now, before the operating lever 9 is operated from the neutral position (N) to the left-turn direction position (L), if the steering wheel 28 is rotated by a slight angle in the left-turn direction and brought into a fixed state,
The cancel cam 21 of the cam cylinder body 20 is slightly rotated in the direction of arrow B from the neutral state in FIG. 1, and as shown by the solid line in FIG. Move within the rotation trajectory. In this state, when the operating lever 9 is rotated from the neutral position (N) to the left-turning position (L), one ratchet portion 8a of the ratchet 8 comes into contact with the cancel cam 21 of the cam cylinder body 20, and the cam The cylinder body 20 is rotated in the direction of arrow B while being compressed against the elastic force of the spring member 25, and the ratchet portion 8a is obstructed by the cancel cam 21 as shown by the two-dot chain line. ft (L), and the operating lever 9 is held at the left turn direction position ft (L). That is, the state shown in FIG. 6 is reached.

According to the above embodiment, the following effects are achieved. That is, prior to operating the operating lever 9, the steering wheel 28 is rotated by a slight angle, for example, in the left turn direction, and the cancel cam 21
is moved within the rotation locus of the ratchet parts 8a, 8a of the ratchet 8, the operating lever 9 is at the neutral position (
When the ratchet portion 8a of the ratchet 8 contacts the cancel cam 21 of the cam cylinder body 20, the cam cylinder body 20 resists the elastic force of the spring member 25. Since the ratchet portion 8a can be moved to the cancel position without being obstructed by the cancel cam 21, the operating lever 9 can be moved to the neutral position ( N) to the left turn direction position (L) and right turn direction position f (R).

8 and 9 show a second embodiment of the present invention, and the difference from the first embodiment is that a rotatable plastic cam cylinder 29 is provided on the outer circumference of the guide cylinder 2. Two cancel cams are fitted, two connecting pins 30 and 30 are provided upwardly protruding from the flange portion 29a at the upper end thereof, and two cancel cams have elastically deformable arm portions 31a and 31a on the outer periphery. 31.31 is provided protrudingly. This cam cylinder body 29 is urged upward by a spring 27 interposed between it and the switch body 1 similarly to the cam cylinder body 20, and the steering wheel 28 is attached to the steering shaft 3 through its connection hole 28a. , 28a, the connecting pins 30, 30 move downward against the elastic force of the spring 27 and can rotate integrally with the steering wheel 28.

Also in this second embodiment, the steering wheel 28 is rotated by a slight angle, for example, in the left turn direction, prior to the operation of the operating lever 9, and the cancel cam 31 is rotated by the ratchet 8.
When the operating lever 9, that is, the movable bracket 6 is rotated from the neutral position (N) to the left-turning position (L) in the state in which the ratchet parts 8a, 8a are moved within the rotation locus, the ratchet part of the ratchet 8 is rotated. 8a comes into contact with the cancel cam 31 of the cam cylinder body 29 and elastically deforms the arm portion 31a, thereby moving to the cancel position.
This embodiment has the same effect as the embodiment.

[Effects of the Invention] Since the present invention is as explained above, it has the following effects.

The turn signal canceling device according to claim 1 is provided with a mechanism section having a ratchet section that is operated by an operating lever from a neutral position to a right turn direction position and a left turn direction position and moved to a cancel position according to the operation, and a steering wheel. A cam guide part is provided with a drive part on the outer periphery, and a cancel cam is provided on the outer periphery, and driven parts for clockwise rotation and counterclockwise rotation are provided at a predetermined angle on the inner periphery. a cam cylinder body for positioning a driving part of the cam guide member between clockwise rotation driven parts and counterclockwise rotation driven parts is rotatably fitted to the outer peripheral part of the cam guide member;
The cam barrel is always held between the cam barrel and the cam guide member so that its driving part is located between the clockwise rotation driven part and the counterclockwise rotation driven part, and the cancel cam is connected to the cancel cam. A spring member is interposed that allows the cam cylinder to rotate when it comes into contact with a ratchet portion in a certain position.

Therefore, when the steering wheel is rotated by a certain angle and the cancel cam of the cam cylinder moves within the rotation locus of the ratchet part, the operating lever of the mechanism part is operated from the neutral position to the right-turning position or the left-turning position. Then, the ratchet part comes into contact with the cancel cam of the cam barrel and rotates the cam barrel against the elastic force of the spring member, so regardless of the position of the steering wheel, the control lever can be moved from the neutral position to the right turn direction. position or left turn direction position.

The turn signal canceling device according to claim 2 is provided with a mechanism section having a ratchet section and operated from a neutral position to a right turn direction position and a left turn direction position by an operation lever, and a mechanism section that is rotated by a steering wheel and moved to a cancel position on an outer periphery. A cam cylinder body provided with a cancel cam that comes into contact with a certain ratchet part is provided, and the cancel cam is formed to be elastically deformable. Therefore, when the steering wheel is rotated by a certain angle and the cancel cam of the cam cylinder moves within the rotation locus of the ratchet part, the operating lever of the mechanism part is operated from the neutral position to the right-turning position or the left-turning position. Then, the ratchet part comes into contact with the cancel cam of the cam barrel and elastically deforms the cancel cam, so the operating lever can be reliably operated from the neutral position to the right-turn position or left-turn position regardless of the position of the steering wheel. .

[Brief explanation of drawings]

1 to 7 show a first embodiment of the present invention, in which FIG. 1 is an enlarged cross-sectional view of the main part, FIG. 2 is a plan view of the whole, and FIG. 3 is a longitudinal sectional view of the same. , Figure 4 is a vertical sectional view of the main part, Figure 5
7 to 7 are views corresponding to FIG. 1 in different states for explaining the operation, FIG. 8 is a view corresponding to FIG. 1 showing the second embodiment of the present invention, and FIG. 9 is a view corresponding to the same cam cylinder. is a perspective view of
FIG. 10 is a diagram corresponding to FIG. 7 showing a conventional example. In the figure, 4 is a mechanism part, 8 is a ratchet, 8a is a ratchet part, 9 is an operating lever, 16 is a cam guide member, 17 is a projection (drive part), 20 is a cam cylinder body, 21 is a cancel cam, 22 is a left 23 is the rotation amount (driven part for left rotation), 23 is the right rotation amount (driven part for right rotation), 25 is the spring member, 28 is the steering wheel, 29 is the cam cylinder body, 31
indicates a cancel cam.

Claims (1)

[Scope of Claims] 1. A mechanism section having a ratchet section that is provided to be operated from a neutral position to a right turn position and a left turn direction position by an operating lever and is moved to a cancel position in response to the operation, and a steering wheel. a cam guide member which is rotated by the cam guide member and has a driving part on the outer periphery; a cam guide member which is rotatably fitted to the outer periphery of the cam guide member and has a cancel cam on the outer periphery; a cam cylinder body having driven parts for rotation and left rotation, and in which a driving part of the cam guide member is positioned between these driven parts for right rotation and left rotation; this cam cylinder body and the cam guide member; The cam cylinder is always held so that its driving part is located between the clockwise rotation driven part and the counterclockwise rotation driven part, and the cancel cam is connected to the ratchet part in the cancel position. A turn signal canceling device comprising: a spring member that allows rotation of the cam cylinder when abutting the cam cylinder. 2. A mechanical part that is provided to be operated from a neutral position to a right-turn direction position and a left-turn direction position by an operating lever and has a ratchet part that is moved to a cancel position in response to the operation, and a mechanism part that is rotated by a steering wheel and has an outer peripheral part. 1. A turn signal canceling device comprising: a cam cylinder body having a canceling cam that comes into contact with a ratchet portion in a canceling position, the canceling cam being formed to be elastically deformable.