JPH0126914Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is used for automatic transmissions of automobiles.
Regarding a spring assembly in which a plurality of compression coil springs are attached to one surface of an annular substrate in a vertical position so as to be compressible between them and a mating member, in particular, a spring assembly in which the mounting structure of each compression coil spring to the substrate has been improved. Regarding.

Problems to be solved by conventional techniques and ideas Conventionally, as a spring assembly in which a plurality of compression coil springs are attached vertically to one surface of this type of annular substrate, Japanese Patent Publication No. 56-47419 discloses a substrate A plurality of cylindrical protrusions are formed on one surface by burring at intervals in the circumferential direction, and a reduced-diameter end turn portion formed at one end of a compression coil spring is fitted into the protrusions to form the protrusions. It is known that a compression coil spring is irremovably attached by expanding the upper end and caulking the end turn. Since it is necessary to fit the end wrap portions one by one onto the protrusions and also to caulk the protrusions, there is a drawback that the installation work is time-consuming.

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

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 a ring with a constant width having rising portions on the outer and inner peripheries, and on the bottom surface 2 of the substrate 1 is a compression coil to which the upper surface of a cylindrical portion 3 of a predetermined height is attached. A plurality of protrusions 7 are formed by press molding at regular intervals in the circumferential direction, and each protrusion 7 is closed by a circular flat plate 6 having a diameter slightly larger than the coil diameter of the spring 5. ,
By cutting off the upper surface of the peripheral part of the flat plate 6 in a fan shape perpendicular to the plane, two notch holes 8 and 10 that open from the flat plate 6 to the lower end of the cylindrical part 3 are formed at a predetermined interval in the circumferential direction. has been done.

The compression coil spring 5 has no end turn portion formed on the lower end side of the coil formed by spirally winding the spring wire.
The wire at the lower end has a spiral shape with the same pitch as the coil, and this compression coil spring 5 is connected to the flat plate 6 of the projection 7.
By holding the coil in a vertical position and rotating the coil around the center line, the end of the lower end of the wire is inserted through the notch hole 8 on one side of the flat plate 6 and screwed into the inside of the protrusion 7, and then When the coil is further rotated while the end of the wire facing the notch hole 10 is pushed outward, and the end of the wire protruding outside the cylindrical portion 3 of the protrusion 7 is locked to the outer surface thereof by elastic restoring force. Each compression coil spring 5 is attached to the substrate 1 in a vertical position by sandwiching the wire between the opening edge 8a on the upper surface side of one notch hole 8 and the opening edge 8b on the lower surface side.

Structure and effects of the device As specifically explained in the above embodiments,
The spring assembly of the present invention has a plurality of protrusions formed at circumferential intervals on one surface of an annular substrate, each having two notch holes spaced apart from each other in the circumferential direction, and at least By inserting the one end of the compression coil spring whose one end is spirally wound from one notch hole of the protrusion to the other notch hole, a plurality of the compression coil springs are formed on one surface of the substrate. The gist is that the coils are attached in a vertical position and spaced apart from each other in the circumferential direction, and the coils are attached by simply rotating the coil and locking one end of the coil to the side circumferential surface of the protrusion. In addition, since there is no need to form an end turn portion at one end of the compression coil spring, manufacturing costs can be reduced.

[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: Cylindrical part, 5: Compression coil spring,
6: Flat plate, 7: Projection, 8, 10: Notch hole.

Claims (1)

[Scope of utility model registration request] A plurality of protrusions are formed on one surface of an annular substrate at intervals in the circumferential direction, each having two notch holes spaced apart in the circumferential direction, and at least one end thereof is spirally wound. A plurality of compression coil springs are placed on one surface of the substrate in a vertical position and in a circumferential direction by inserting the end portion of the compression coil spring on the one end side from one notch hole of the projection to the other notch hole. A spring assembly characterized in that the spring assembly is mounted at intervals from each other.