JPS5926813B2 - Coil spring seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coil spring spring fitted to an end of a coil spring, and more particularly to a coil spring spring provided with a cushioning material interposed between corresponding strands of the coil spring. Regarding.

When used in a device that is subject to shock loads, such as a vehicle suspension system, such as a coil spring made of helically wound wires, the wires may collide with each other, producing a large amount of noise.

In particular, coil springs with non-linear load-deflection characteristics, such as unequal pitch coil springs with varying pinch between strands, or tapered strand coil springs using strands tapered in the length direction. Since the nonlinear characteristics are obtained by the close contact between the wires in the low-rigidity portions, collisions between the wires due to the impact load are inevitable.

For this reason, a method has been proposed to absorb the impact force by inserting a cushioning material between the wires, but it is necessary to securely hold the cushioning material so that it does not escape from between the wires of a coil spring that repeatedly expands and contracts at high speed. is extremely difficult.

The present invention aims to reduce the noise generated when a collision load is applied by providing a shock absorbing material on the main body of the coil spring riverbank to prevent collisions between the wires of the coil springs.

Hereinafter, one embodiment of the present invention will be described in detail based on the accompanying drawings.

A first embodiment of the present invention is shown in FIGS. 1 and 2.

In the figure, 31 is a main body having a circular planar shape, and a tall guide 32 is protruded from the center of the upper surface of the main body.
A spiral slope 33 is formed on the outer periphery of the upper surface of the main body 31, and a device groove 34 having a semicircular cross section is bored in the slope 33.

A large number of cushioning materials 35 made of strong synthetic resin fibers such as Nylon 7 are implanted around the outer periphery of the guide 32 by flocking.

Hair flocking is a method widely used to implant hair on materials such as synthetic resins and metals, and involves charging the material and fibers, causing the fibers to adhere to the material using electrostatic attraction, and applying it to the material. The fibers are fixed using an adhesive, and if the processing conditions are selected, the fibers can be fixed extremely firmly to the material.

In this embodiment, the coil spring So - the winding strand S
1 into the device groove 34 and align the cushioning material 35 made of synthetic resin fibers outward, the cushioning material 35 will fit between the first turn of the strand S1 and the second turn of the strand S2, and between the second turn of the strand S2. It is interposed between the winding strand S2 and the crown winding strand S3, and the impact force between the strands is alleviated, thereby suppressing the generation of noise.

Next, a second embodiment of the present invention will be described.

In FIG. 3, reference numeral 41 denotes a main body having a circular planar surface, and 42 a guide protruding from the upper surface of the main body. A slightly deeper device groove 44 is bored.

A buffer material 45 made of a large number of synthetic resin fibers is planted on the upper outer periphery of the guide 42 and the slope 43 on the outer periphery of the device groove 44.
The lower cushioning material 45 is bent inward and the coil spring So
- The upper cushioning material 45 protrudes in the radial direction between the material s1 of the winding and the strand S2 of the second winding, and the strand S2 of the second winding
and the third turn of the strand S3, and as in the first embodiment, the impact force between the strands is alleviated and noise generation is suppressed.

As clarified by the above explanation, the coil spring of the present invention is inserted between the strands of the coil spring in the main body forming a device groove into which the end of the coil spring is almost tightly fitted. Because the cushioning material made of a large number of synthetic resin fibers is implanted, it has the function of holding the coil spring in a fixed position and preventing interference between the coil spring and the mounting tool, similar to the conventionally known coil springs. By intervening a cushioning material made of a large number of synthetic resin fibers, collisions between the wires of the coil spring are alleviated, thereby reducing noise, and preventing partial impact stress from acting on the wires, increasing durability. It has the effect of improving sex.

Furthermore, since the buffer material prevents or suppresses the movement of the wires of the coil spring, it has the effect of preventing surging.

[Brief explanation of drawings]

1 to 3 show embodiments of the present invention, FIG. 1 is a plan view of the first embodiment, FIG. 2 is a sectional view taken along line C-C in FIG. 1, and FIG. 3 is a second embodiment. FIG. 31.41: Main body, 34, 44: Device groove, 35°45:
Buffer material.

Claims (1)

[Claims] 1. A shock absorbing material made of a large number of synthetic resin fibers interposed between the strands of the coil spring is implanted in the main body, which has a device groove into which the end of the coil spring is almost tightly fitted. Coiled spring riverbank.