JP2560843Y2 - Device for reducing pedal effort - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for reducing the depression force of a clutch operation pedal of an automobile.

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, an upper end portion of a pedal arm 32 is pivotally mounted on a pedal support 31 by a bolt 34 via a boss 33 as shown in FIGS. I have. Pedal support 31
A bracket 35 is attached to the side surface of the bracket by the bolt 34. A guide rod 36 is pivotally attached to the lower end of the bracket 35 and the pedal arm 32 at both ends, and a spring receiver 38 is slidably mounted on the guide rod 36, and a compression spring 37 is mounted on the spring receiver 38. In such a treading force reducing device, since the compression spring 37 is used, the axis of the device is not fixed in each operation, and the hysteresis is large, so that there is a problem that the tire is easily fatigued.

On the other hand, as disclosed in Japanese Utility Model Publication No. 61-32821, there is also known a pedaling force reducing device which solves the above-mentioned problem by using a tension spring instead of the compression spring. According to this, as shown in FIG. 7, the link 52 is pivotally supported by a pin 53 provided on the vehicle body 51. Rod 55 fixed to pedal arm 54
A sliding portion 55a is provided at the tip of the sliding portion 55a.
Is slidable in a long hole 56 provided in the link 52, and a tension spring 57 is provided between the free end 52a of the link 52 and the sliding portion 55a. Pedal arm 54
From the original position to the turnover point, the pedal arm 54 is urged counterclockwise by the tension spring 57 via the sliding portion 55a of the rod 55, and clockwise from the turnover point to the full stroke. It is urged to.

[0004]

By the way, in the pedaling force reducing device shown in FIG. 7, in order for the sliding portion 55a to slide in the long hole 56, an appropriate clearance is provided between the sliding portion 55a and the long hole 56. There is a need.

[0005] However, as is apparent from FIG.
Since the line of action of the tension spring 57 and the longitudinal direction of the long hole 56 are parallel, the free end 52a of the link 52 receives a force in the longitudinal direction of the long hole 56, that is, in the direction parallel to the guide surface from the tension spring 57. Only. Therefore, the sliding portion 55a is not urged by either of the upper and lower guide surfaces of the elongated hole 56. Therefore, when the vehicle vibrates, the link 52 moves up and down by the clearance, and the sliding portion 55a comes into contact with both guide surfaces of the long hole 56, and an unpleasant sound may be generated. This uncomfortable sound may be generated regardless of the position of the pedal arm 54, which has caused the driver or the fellow passenger to feel uncomfortable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a device for reducing the depression force on an operation pedal, which does not cause uncomfortable sound due to vibration of a vehicle.

[0007]

In order to solve the above-mentioned problems, the apparatus for reducing the equal force of the operating pedal according to the present invention is pivotally mounted in a pivoting portion provided on the pedal support so as to be swingable in the longitudinal direction of the vehicle. A pedal arm, one end of which is pivotally attached to a swing shaft provided on a part of the pedal arm so as to be able to swing back and forth, and the other end of which is a free end; The formed guide surface is fixed to the pedal support in a sector formed by connecting both ends of an arc-shaped orbit drawn by the swing axis by the swing of the pedal arm and the pivot portion, A slide pin slidable along the guide surface, and a bridge between the slide pin and the free end of the link, for urging the free end of the link toward the slide pin and forcing the link in the predetermined direction Formed in Comprising id surface and a non-parallel tension springs, the, to the extent that the pedal arm swings
The slide pin is moved forward by the urging force of the tension spring.
The guide surface is in constant contact with the guide surface .

[0008]

In the device for reducing the depression force of the operating pedal of the present invention having the above-mentioned structure, the biasing direction of the tension spring is not parallel to the guide surface extending in the predetermined direction. For this reason, in the range where the pedal arm swings, a force is applied by the urging force of the tension spring so that the slide pin and the guide surface are constantly in contact with each other. Therefore, regardless of the position of the pedal arm, the guide surface and the slide pin do not easily separate from each other due to the vibration of the vehicle, so that it is possible to prevent the generation of uncomfortable sound due to the collision between the two.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and 2 show a first embodiment. A lower portion attached to a vehicle body not shown in the figure is opened, and a pedal arm 2 is provided on a pedal support 1 having an upper portion closed and a boss portion 3 and a bolt 4 provided at an upper end thereof. ) And pivotable. The pedal arm 2 extends below the pivot portion, that is, the boss portion 3 and the bolt 4, and bends laterally when the pedal support 1 is separated, and one end of a link mounting piece 5 is fixed to this bent portion. The link mounting piece 5 extends to the side (left side in FIG. 1) of the pedal arm 2, and a link 6 is pivotally attached to the other end (free end) 5a at the lower end so as to be swingable in the front-rear direction. A long hole 7 is provided in the longitudinal direction of the link 6, and a center line 7 a of the long hole 7 connects an axis of the link 6 (a center of pivotal attachment of the link 6 to the link mounting piece 5 and a free end 6 a of the link 6). Line (11). On the other hand, the upper end of the bracket 12 is fixed to the pedal support 1 at the bolt 4, and a slide pin 8 is attached to the lower end of the bracket 12, and the slide pin 8 can slide along the guide surface of the long hole 7. It is loosely fitted in the long hole 7 with an appropriate clearance. The slide pin 8 is provided at both ends of the arc track 21 drawn by the pedal arm 2, that is, at the other end 5a indicated by a solid line in FIG.
And the other end 5 a indicated by a two-dot chain line and the bolt 4 are located in a sector 20 formed by connecting the bolt 4. A tension spring 9 is provided between the slide pin 8 and the free end 6a of the link 6. And the action line 10 of the tension spring 9
Is set so as to pass behind the axis 11 of the link 6 (to the right in FIG. 2), and is set non-parallel to the center line 7a of the long hole 7. When the pedal arm 2 is fully depressed, the action line 10 of the tension spring 9 is eccentric at a distance d sufficiently larger than the bolt 4, that is, the pivotal joint of the pedal arm 2, as shown by a two-dot chain line in FIG. 12, the position of the free end 5 a of the link mounting piece 5 and the position of the long hole 7 of the link 6 are set.

With the above configuration, the action line 1 of the tension spring 9
2 is set to be non-parallel to the center line 7a of the elongated hole 7 as shown in FIG.
Are urged to come into contact with the left guide surface. For this reason, in the swing range of the pedal arm 2, a force is applied by the urging force of the tension spring 9 such that the slide pin 8 and the guide surface on the left side of the long hole 7 constantly contact. Therefore, no matter where the pedal arm 2 is located, the guide surface of the long hole 7 and the slide pin 8 do not easily separate from each other due to the vibration of the vehicle, so that unpleasant noise due to collision between the two does not occur. .

In the area near the full stroke of the pedal arm 2 (see the two-dot chain line in FIG. 2), the action line 10 of the tension spring 9 is farther away from the boss 3 and the bolt 4 which are the pivots of the pedal arm 2. Therefore, the spring force can be set small for the desired reduction moment around the bolt 4 which is the same as the conventional device. Therefore, the twisting moment at the boss 3 and the bolt 4 of the pedal support 1 due to the tension spring 9 is reduced.

FIGS. 3 and 4 show a second embodiment of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the second embodiment, a torsion spring 15 for urging the free end 6a backward is attached between the free end 6a of the link 6 and the slide pin 8.

The operation and effect of the torsion spring 15 are the same as those of the tension spring 9 of the first embodiment.

[0014]

As described above in detail, according to the device for reducing the depression force of the operation pedal of the present invention, a remarkable effect that no unpleasant sound is generated by the vibration of the vehicle can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment.

FIG. 2 is a side view of the first embodiment.

FIG. 3 is a front view of a second embodiment.

FIG. 4 is a side view of the second embodiment.

FIG. 5 is a side view of a main part of a conventional pedal depression force reducing device.

FIG. 6 is a front view of a main portion of a conventional pedal depression force reducing device.

FIG. 7 is a front view of a main part of a conventional pedal depression force reducing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pedal support, 2 ... Pedal arm, 5 ... Link mounting piece, 6 ... Link, 7 ... Long hole, 8 ... Slide pin, 9 ... Tension spring, 12 ... Bracket, 15 ... Torsion spring

Claims (1)

(57) [Scope of request for utility model registration] 1. A pedal arm pivotally mounted in a pivotable portion provided on a pedal support so as to be swingable in the front-rear direction of the vehicle, and one end of the pedal arm in a front-rear direction on a swing shaft provided on a part of the pedal arm. A link pivotally attached to the other end, the other end of which is a free end; a guide surface provided on the link and formed in a predetermined direction; and an arc trajectory drawn by the swing axis by the swing of the pedal arm. A slide pin fixed to the pedal support in a sector formed by connecting both side ends and the pivot portion, and slidable along the guide surface; and between the slide pin and a free end of the link. is bridged, the free end of the link urges the said slide pin side, with its urging direction is formed in the predetermined direction guide surface and a non-parallel tension springs, the, the pedal arm is swung Range Oite said
The slide pin and the gear are biased by the biasing force of a tension spring.
A device for reducing the depression force on an operating pedal, wherein the device is in constant contact with the id surface .