JPH0115949Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration absorbing device that absorbs vibrations transmitted between a control cable and a driving member or a driven member connected to an end of the control cable.

For example, when connecting a car's carburetor and accelerator pedal with a control cable, if the end of the cable is directly connected to the pedal, engine vibrations will be transmitted through the cable to the pedal, causing discomfort to the driver. A rubber elastic body is inserted between the metal fitting fixed to the pedal and the pedal to absorb vibrations, but the elastic body used conventionally has a small hole in the center for passing the cable through. Since it has a thick cylindrical shape and a load-deflection characteristic that is approximately linear, a considerable amount of compression occurs even in a low load region, resulting in a low ability for the cable to follow the pedal.

In the present invention, the amount of compression of the elastic body is relatively small in the low load region, and the followability of the cable and the driving member or driven member is high.Furthermore, in the high load region, the elastic body is greatly compressed and the impact load is applied. An object of the present invention is to provide a vibration absorbing device that prevents vibrations from being transmitted.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

A seat plate 4 made of synthetic resin is attached to a pedal 1 that transmits operating force by pulling a cable 6 by moving to the left in the figure.
is applied, and the elastic locking claws 3, 3 that protrude from one side are locked and fixed in the mounting hole 2, and the cable 6 that protrudes to the other side of the pedal 1 through the center hole 5 of the seat plate 4, An elastic body 10 and metal and rubber backing plates 7 and 8 are fitted in order, and a metal fitting 9 is fixed to the end by a cast-in, and the other end of the cable 6 is attached to a driven member (not shown). is connected to.

The elastic body 10 is made of synthetic rubber, has a substantially hollow spherical shape in an unloaded state, and has openings 1 at both ends.
1 and 11 are formed, and a rib 12 with a through hole 13 in the center, through which the cable 6 is inserted almost tightly, is formed on the inner periphery of the central part in the axial direction, and the compressive load in the axial direction is When the compression stroke is applied, a large force is required to crush the hemispherical portions on both sides of the rib 12 at the beginning of the compression stroke, and at the middle stage, the crushed hemispherical portions are only further compressed. Therefore, a large deformation occurs with a relatively small force.Furthermore, in the final stage, the crushed hemispherical part hits the rib 12 and is compressed, so the deformation is small compared to the increase in load. When drawn on a load-deflection characteristic curve, the slope in the middle of the compression stroke is gentler than in the initial and final stages.

Therefore, in this embodiment, when the cable 6 is pulled by depressing the pedal 1, in a range where the tensile force acting on the cable 6 is relatively small,
The amount of compression of the elastic body 10 is small, and the cable 6 follows the pedal 1 well to operate, but when the tensile force of the cable 6 becomes large, the amount of compression of the elastic body 10 increases, and the amount of movement of the pedal 1 is reduced. In particular, the amount of increase in the tensile force of the cable 6 is small, thereby preventing a sudden increase in load, and when the tensile force further increases, the cable 6 operates substantially integrally with the pedal 1.

As specifically explained in the above embodiment,
The vibration absorbing device for a control cable of the present invention is a vibration absorbing device for a control cable that absorbs vibration by interposing an elastic body between a metal fitting fixed to an end of the control cable and a driving member or a driven member. The elastic body has a substantially hollow spherical shape with both ends open, and an annular rib protrudes from the inner periphery of the central part in the axial direction, and the load-deflection characteristic curve of the elastic body has a slope in a high load region. is non-linear with a slope that is gentler than that in the low-load region, so in the low-load region, the amount of compression of the elastic body is relatively small, and the followability of the cable and driving member or driven member is high, making it possible to accurately transmit the operating force. At the same time, the elastic body is greatly compressed in a high load region, preventing the transmission of an impactful load, resulting in an excellent safety effect.

[Brief explanation of drawings]

The accompanying drawings are cross-sectional views of embodiments of the present invention. 1: Pedal, 6: Cable, 9: Metal fittings, 10:
Elastic body, 11: opening, 12: rib.

Claims (1)

[Scope of utility model registration request] In a control cable vibration absorbing device in which an elastic body is interposed between a metal fitting fixed to an end of a control cable and a driving member or a driven member to absorb vibration, the elastic body has a substantially hollow spherical shape with both ends open. A control cable vibration absorbing device characterized by having an annular rib protruding from the inner periphery of the central portion in the axial direction.