JP3088252U - Wiring holding member - Google Patents

Abstract

(57) [Summary] (Modifications required) [Problem] A support insulator for manufacturing parts by using two divided molds (upper and lower molds) to reduce the mold manufacturing cost and simplify the machining process. I will provide a. A support insulator used for electric wiring, in which opposing eaves portions (2) are arranged so as not to overlap with each other and divided into four portions with respect to the entire circumference, and are divided into two divided molds ( The production becomes possible only by using the upper and lower dies.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a wiring holding member such as a support insulator (detention insulator, drum insulator, etc.) used for electric wiring.

[0002]

[Prior art]

 FIG. 3 shows a front sectional view of a drum insulator, which is one type of support insulator used for conventional electric wiring, and an example of a mold for manufacturing the same. As a method of manufacturing the supporting insulator, generally, a casting method in which raw materials are injected into a mold, an injection molding method in which pressure is injected into a mold, and a material softened by high frequency or the like is pressed and molded by a mold. There is a direct molding method.

[0003]

[Problems to be solved by the invention]

 However, since the conventional insulator 10 has the eave portions 11 facing up and down, it must be manufactured using at least four divided dies (up, down, left and right), which is a factor of cost increase. Was. That is, in the shape of the conventional insulator, the facing eaves portions 11 are overlapped in the vertical direction, so that a normal die (upper die / lower die) generates an undercut portion and cannot be manufactured. Mold had to be manufactured. For this purpose, the mold manufacturing cost is high, and the manufacturing process is to press the mold in the material direction from the top, bottom, left and right directions, and after manufacturing, move the mold in the up, down, left, and right directions, and take out the molded product. The process became complicated, causing various problems and increasing personnel costs.

[0004]

[Means for Solving the Problems]

 In the present invention, the shape of the eaves facing each other is such that they do not overlap each other in the up-down direction, so that parts can be manufactured by using two separate molds (upper die and lower die). Therefore, the mold manufacturing cost can be reduced, and the processing steps can be simplified. In the present invention, as long as the wiring holding member is formed by using a mold, it does not matter which manufacturing method is used, and it does not matter which material is used, such as porcelain, glass, and resin.

[0005]

【Example】

 FIG. 1 shows an example in which the present invention is applied to the manufacture of a drum insulator. In FIG. 1, each eave portion 2 is divided into four portions with respect to the entire circumference of the insulator, and the opposing eave portions 2 are arranged so as not to overlap with each other.

FIG. 2 shows a front sectional view of the embodiment shown in FIG. 1 and a shape of a mold for manufacturing. Since the eaves portions 2 do not overlap in the up-down direction, the manufacture becomes possible only by using the two divided molds (upper die and lower die).

The number of divisions of the eaves 2 can be set arbitrarily. In addition, in consideration of the weight applied to each eave portion 2, one eave portion 2 can be made large and one eave portion 2 can be made small. Even when the eaves shape is adopted as in the present invention, there is no problem in strength because the external force applied to the insulator is mainly applied to the center portion of the insulator. Also, the insulation performance of the insulator is not affected because it depends on the material and the thickness of the central part.

[0008]

[Effect of the invention]

 According to the present invention, only two molds (upper mold / lower mold) are required for manufacturing, and the process is simple enough to move the mold up and down. In addition to reducing the cost of mold production, the time required for processing, the occurrence of trouble during processing, and labor costs can be reduced. Moreover, as compared with the insulator having the same outer shape, the volume of the facing eaves portion is reduced, so that the material cost is also reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a front sectional view and a mold of an embodiment of the present invention.

FIG. 3 is a front sectional view of a conventional drum insulator and a mold.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulator which invented this invention 2 Eave part 3 Die 10 Conventional insulator 11 Eave part 12 Die

Claims (1)

[Utility model registration claims] 1. A supporting member for use in electric wiring, wherein opposing eaves portions are shaped so as not to overlap with each other.