JPH0128360Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention consists of two spring receivers each having an annular spring bearing surface of a constant width, which are placed opposite each other with a gap between them, and a plurality of compression coil springs between these spring bearing surfaces. This invention relates to a compression spring device equipped with a compression spring device.

Conventional technology and problems to be solved In such compression coil springs, the coil diameter of the coil spring is regulated by the width of the spring receiving surface, and the wire diameter is regulated by the contact length. Previously, a large number of coil springs with small wire diameters and coil diameters were installed to obtain the desired load and deflection characteristics, but coil springs with small coil diameters had a small buckling load relative to their length. However, the device as a whole tends to tilt, and when a large number of coil springs are installed, it takes a long time to assemble the device, resulting in low work efficiency.

SUMMARY OF THE INVENTION An object of the present invention is to provide a compression spring device that eliminates these drawbacks and allows quick assembly of a coil spring.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings.

1 to 3 show a first embodiment of the present invention, in which two spring receiving members 1, 1 each having wall plates 2, 3 protruding from the inner and outer peripheries of an annular spring receiving surface 5 are used as spring receiving surfaces. 5,
As shown in FIG. Eight compression coil springs 8 are formed by spirally winding into an oval shape formed by connecting two semicircles with a straight line, and whose width in the minor axis direction is slightly narrower than the distance between the wall plates 2 and 3 of the spring receiving member 1. The long diameter direction thereof is directed toward the circumferential direction of the spring receiving surface 5, and both ends thereof are fitted between the wall plates 2 and 3, respectively.

FIG. 4 shows a second embodiment of the present invention, in which the compression coil spring 18 has a spring wire 10 arranged in two semicircles at the curvatures of the inner wall plate 2 and the outer wall plate 3 of the spring receiving member 1, respectively. It is spirally wound into a substantially oval shape connected by two substantially equal curves, and has the advantage of being able to be disposed within the annular spring receiving surface 5 with an extremely small gap.

Structure and effects of the device As specifically explained in the above embodiments,
In the compression spring device of the present invention, two spring receivers each having an annular spring receiving surface of a constant width are placed opposite each other at a distance, and a spring wire is arranged in a substantially oval shape between the two spring receiving surfaces. The gist is that a plurality of helically wound compression coil springs are mounted with their major axis directed toward the circumferential direction of the spring receiving surface, and the radial cross-sectional shape of each compression coil spring is approximately oval. In addition to increasing the diameter of the coil, each compression coil spring was installed with its major axis facing the circumferential direction of the spring receiving surface.
The buckling load of each coil spring is large, making it difficult for the entire device to tilt, resulting in excellent stability.In addition, fewer compression coil springs are required to be installed between both spring receivers, reducing assembly time. It has the effect of being

[Brief explanation of drawings]

Fig. 1 is a sectional view of the first embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is a perspective view of a compression coil spring, and Fig. 4 is a cross-sectional view of the second embodiment. It is a front view. 1... Spring receiving member, 5... Spring receiving surface, 8, 18
...Compression coil spring.

Claims (1)

[Scope of utility model registration request] A plurality of compression coil springs in which two spring receivers each having an annular spring receiving surface of a constant width are arranged opposite to each other at a distance, and a spring wire is spirally wound in a substantially oval shape between the two spring receiving surfaces. A compression spring device, characterized in that each of the compression springs is mounted with its major axis directed toward the circumferential direction of the spring receiving surface.