JPH021556Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is used for automatic transmissions of automobiles.
The present invention relates to a spring assembly in which a plurality of compression coil springs are mounted on one surface of an annular base plate in a vertical position so as to be compressible between parallel to the base plate and a corresponding mating member.

Problems to be solved by conventional techniques and ideas Conventionally, such spring assemblies have been constructed by using a plurality of cylindrical compression coil springs made by spirally winding spring wire into a cylindrical shape. The spring assembly has a configuration in which the springs are arranged and attached in a line in a vertical position in a vertical position on a large annular substrate with a constant width.In such a spring assembly, the larger the substrate, the more compression coil springs can be attached. It is possible,
The stress acting on the strands of each compression coil spring is reduced, making it highly durable, but since the board is limited to a predetermined size due to the installation space with the mating member, the stress acting on the wires of each compression coil spring is By making the gap between the springs as small as possible, as many compression coil springs as possible can be attached to a board of a predetermined size. However, since cylindrical compression coil springs have a circular planar shape, when they are arranged in a row, even if adjacent compression coil springs are arranged so close that they touch each other, there is wasted space between them. Therefore, the present invention eliminates wasted space between compression coil springs by using compression coil springs wound so that the planar shape forms a trapezoid. It is an object of the present invention to provide a spring assembly to which a spring is attached.

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

In FIG. 1, reference numeral 1 denotes a metal substrate in the form of an annular ring with a constant width having rising portions on the outer and inner peripheries, and a large number of compression coil springs 3 are attached to the bottom surface 2 of the substrate. As shown in FIG. 2, the spring 3 is constructed by connecting the spring wires to four corners of an isosceles trapezoid in which the distance between the parallel long sides 5 and short sides 6 is greater than the length of the long sides 5. It is spirally wound into an elongated planar shape with rounded parts.
On the bottom surface 2 of the substrate 1, by raising the substrate 1, a pair of claws 7, 7 corresponding to the distance between the long side 5 and the short side 6 of the coil of the compression coil spring 3 are formed.
A plurality of pairs are formed in a radial manner facing toward the center of the substrate 1 at regular intervals in the circumferential direction. By fitting the central part of the long side 5 to the outside of the outer claw 7, and bending and caulking each claw 7, 7 outward, each compression coil spring 3 is attached to its outer claw 7. The compression coil springs 3 are mounted in a vertical position with the long diameter direction facing the center of the substrate 1, with a very small gap between adjacent compression coil springs 3.

In the spring assembly having the above configuration, the planar shape of each compression coil spring 3 attached to the substrate 1 is an elongated trapezoid, and the short side 6 is located on the inner periphery side of the substrate 1, and the long side 5 is located on the outer periphery side. Since it is located on the side, there is almost no gap between adjacent compression coil springs 3, and therefore, it has a spring constant equal to that of this compression coil spring 3 and is equal to the major axis of the compression coil spring 3. The number of springs that can be attached increases compared to when cylindrical compression coil springs with a coil diameter are attached, and therefore the spring constant of the entire assembly increases and the effect on the strands of each compression coil spring 3 increases. The stress caused by this process is reduced.

Structure and effects of the device As specifically explained in the above embodiments,
The spring assembly of the present invention has a plurality of compression coil springs formed by spirally winding spring wires so that the planar shape forms a trapezoid on one surface of an annular substrate, in a vertical position, and with the short sides of each planar shape The gist is that the compression coil spring is attached toward the inner circumferential side of the substrate, and the short side of the compression coil spring attached to the substrate faces the inner circumferential side of the substrate, and the long side faces the outer circumferential side. The springs can be arranged in close contact with each other on the annular board with almost no space between them, and a large number of compression coil springs can be mounted by effectively utilizing the space on the board. This has the effect of reducing stress acting on the wires of each compression coil spring and improving durability.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of an embodiment of the present invention;
FIG. 2 is an enlarged perspective view of a portion thereof. 1: Board, 3: Compression coil spring.

Claims (1)

[Scope of utility model registration request] A plurality of compression coil springs formed by spirally winding spring wires so as to have a trapezoidal planar shape are placed vertically on one surface of an annular substrate, with the short sides of each planar shape facing the inner circumferential side of the substrate. A spring assembly characterized in that it can be attached to the spring assembly.