JPS61136028A - Bellevill spring retaining device - Google Patents

Abstract

PURPOSE:To aim to enhancing the working ability and safety, by forming an embossed section or a bent section for preventing a belleville spring from coming off, in a connecting plate of an insulating bus duct, etc. CONSTITUTION:A connecting plate 1 is formed with embossed sections 6 and bent sections 7 having a height substantially equal to the thickness of a belleville spring 2, at positions where it is circumscribed to the outer diameter section of the belleville spring 2. The belleville spring 2 is set along these positions, and is then superposed thereover with a retaining plate 3 which is fixed to a duct connecting plate 1 by rivets 4. Further, the retaining plate 3 is formed with a poligonal shape hole 8 in which the head section 51 of a connecting bolt is fitted, thereby it is possible to prevent the connecting bolt from rotating.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bell spring fixing device, and particularly to a disc spring fixing device that can be applied to a connecting portion of an insulated bus duct.

[Prior Art and Problems to be Solved by the Invention] Conventionally, appropriate measures have not been taken as means for fixing disc springs, especially at the connections of insulated bus ducts, After overlapping connection, a method is used in which a disc spring is passed through the connecting bolt, then penetrated through the bus bar, and the nut side is tightened while holding the bolt head with a tool. When installing disc springs, which are difficult to separate, there is a problem in that problems such as incorrect orientation or forgetting to install the springs occur.

An object of the present invention is to eliminate the drawbacks of the prior art described above and to improve the workability and safety of connection.

[Means and effects for solving the problem] The gist of the present invention is to provide the connecting plate 1 with a protruding portion 6 or a bent portion 7 having a height approximately equal to the thickness of the disc spring 2. It is formed at a position circumscribing the outer diameter, and the curved spring 2 is placed on this part,
Rivets, bolts, pins, etc. are used as means for fixing the presser plate 3 to the connection plate 1 from above the disk spring 2, and suitable materials for the presser plate 3 include steel, vinyl chloride, Bakelite, and other plastics. . Further, by providing the square hole 8 in the holding plate 3 into which the head 51 of the connecting bolt can be inserted and which cannot rotate, it is possible to provide a disc spring fixing device that prevents the connecting bolt 5 from rotating.

Hereinafter, the present invention will be explained based on FIGS. 1 to 3.

[Example] FIG. 1 is a plan view of the disc spring fixing device of the present invention.

FIG. 2 is a side view of the same. Reference numeral 1 denotes a connecting plate (duct joint), and as shown in FIG. formed in position. ■The spring 2 is placed so that its outer diameter is in contact with the protruding part 6 and the bent part 7 of the duct joint 10, and has a structure in which a holding plate 3 is stacked from above and fixed to the duct continuator 1 with a rivet 4. It has become.

Further, the holding plate 3 is provided with a square hole 8, into which the head 51 of the connecting bolt is fitted, so that rotation of the connecting port 50 can be prevented.

FIG. 3 is a perspective view showing the connecting part of the insulated bus duct to which the present invention is applied. On the nut side, the square hole 8 of the holding plate 30 is made into a round hole large enough for the nut to pass through, and the insulated bus duct 9a
, 9b, the connecting bolt 5 can be inserted and the nut tightened.

[Modification] As a modification of the present invention, a nut for fixing the presser plate 3 is welded to the duct joint 1 without processing the punched portion 6 or the bent portion 7, and the nut for fixing the presser plate 3 is fixed. It is also conceivable to fix the disc spring 2 by providing a protruding portion 6 or a bent portion 7 on the plate spring 2 .

Further, it is also possible to provide the internal portion 61 and the bent portion 7 to either one of them.

[Effects of the Invention] As described above, according to the present invention, it is possible to improve workability in connecting insulated bus ducts and the like, and to improve safety by correctly attaching the disc spring and preventing it from falling off.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a disc spring fixing device according to the present invention, and FIG.
The figure is a side view of the same, and FIG. 3 is a perspective view showing a connecting portion of an insulated bus duct to which the present invention is applied. 1... Connection plate (duct joint), 2... Belleville spring. 3... Holding plate, 4... Rivet, 5... Connection bolt. 51...Bolt head, 6...Protrusion part, 7...Bending part. 8... Square hole, 9a, 9b... Insulated bus duct. Figure 3 t1: Yu7 to Ayago3; Ancestor of scales

Claims (2)

[Claims] (1) Form a protruding part or a bent part on the connecting plate at a position that circumscribes the outer diameter of the disc spring with a height approximately equal to the thickness of the disc spring, and place the disc spring on this part. A disc spring fixing device characterized in that a presser plate is fixed to a connecting plate from above. (2) Claim 1, characterized in that the holding plate is provided with a square hole into which the head of the connection bolt can be inserted and which cannot rotate.
Belleville spring fixing device as described in section.