JPH0545876U - Fixed electrode - Google Patents

Abstract

(57) [Abstract] [Purpose] In a fixed electrode for joining a terminal to a plate material, to prevent displacement of the terminal to be joined to the plate material. [Structure] A recess 31a capable of fitting with the terminal 32 is provided at a position where the terminal 32 of a substantially flat plate member 31 is joined. An inclined surface 31b is provided around the recess 31a. Recess 31a
And the inclined surface 31b are integrally molded. The terminal 32 to be joined is slid along the inclined surface 31b so that the terminal 32 is recessed.
Fit to a. [Effect] Since the terminal 32 is fitted in the recess 31a of the plate member 31, the terminal 32 does not shift its position. Since the inclined surface 31b is provided around the recess 31a, the terminal 32 and the recess 31a can be fitted easily.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fixed electrode in which a terminal is joined to a plate material used for electric equipment.

[0002]

[Prior Art]

 As shown in FIG. 3, the fixed electrode provided in the fuse cylinder in which the power fuse is built up is composed of a substantially flat plate member 31 and a terminal 32 formed with a screw. Conventionally, the terminal 32 is bonded to the plate material 31 by marking the position where the terminal 32 of the plate material 31 is bonded with a marking line or using a bonding jig. ..

[0003]

[Problems to be solved by the device]

 In the case where the fixed electrode in which the terminal 32 is joined to the substantially flat plate member 31 is molded with the epoxy resin, the screw portion of the terminal 32 joined to the plate member 31 is used to fix to the molding die. Therefore, the thickness of the epoxy resin that insulates the fixed electrode depends on the positioning accuracy of the terminal 32. Therefore, the positioning accuracy of the terminal 32 must be high in order for the fixed electrode to maintain a predetermined insulation strength and mechanical strength by the epoxy resin. Also, when fixing the fixed electrode to the mold in addition to the screw part of the joined terminal 32, the fixed electrode is fixed to the mold in two or more places, so it is impossible. If fixed, this fixed electrode may be deformed or damaged, or this fixed electrode may not be attached to the mold. Therefore, the positioning accuracy of the terminal 32 must be higher. However, when the terminal 32 is joined to the plate material 31 after marking the position where the terminal 32 is joined with a marking line or the like, the terminal 32 is likely to be displaced during the joining operation because the plate material 31 is a flat surface. There is. Further, when using a jig for joining, there is a drawback that work efficiency is poor because the terminal 32 must be positioned by the jig and then the joining work of the terminal 32 must be performed. Therefore, the present invention provides a fixed electrode having a structure in which the terminals can be easily positioned and the terminals 32 are not displaced during the joining work.

[0004]

[Means for Solving the Problems]

 In the present invention, a recess is formed at a position where the terminals of the substantially flat plate material are joined together so as to be fitted with the terminals. Around the recess, an inclined surface is provided so that the terminal to be joined can slide into the recess, and the joint surface of the terminal is slid and moved along the inclined surface to fit the terminal into the recess and position the terminal to be joined. .. The concave portion and the inclined surface provided around the concave portion are integrally molded.

[0005]

[Action]

 In the fixed electrode of the present invention configured as described above, the concave portion provided in the substantially flat plate material and the inclined surface around the concave portion can be easily integrally formed by pressing. Further, since the joining surface of the terminal to be joined is slid along the inclined surface provided around the recess to fit the terminal in the recess, the terminal can be easily positioned. The positioning accuracy can be improved by improving the accuracy of the position size of the recess and the fitting size of the recess and the terminal. When the plate material and the terminal are joined, the terminal is fitted in the recess, so that the terminal is not easily displaced.

[0006]

【Example】

 As an embodiment of the present invention, an example in which the fixed electrode of the present invention is used in a fuse cylinder containing a power fuse will be described. In FIG. 1, the fuse 10 is built in the hollow portion 1 a of the fuse cylinder 1 together with the movable electrode 2. The electrode 10 a of the fuse 10 is electrically connected to the electric wire 4 via the movable electrode 2 and the fixed electrode 3. The fixed electrode 3 is molded in the fuse cylinder 1 with an epoxy resin 5. Further, the epoxy resin 5 forms the hollow portion 1a in which the fuse 10 and the movable electrode 2 are built. The fixed electrode 3 is held in the fuse cylinder 1 by the epoxy resin 5, and the fuse 10 and the movable electrode 2 are electrically insulated from the outside of the fuse cylinder 1. As shown in FIG. 2, the fixed electrode 3 is one in which the terminal 32 is joined to a substantially flat plate member 31. A recess 31a that can be fitted into the terminal 32 is provided at a position where the terminal 32 of the substantially flat plate member 31 is joined. An inclined surface 31b is provided around the recess 31a of the substantially flat plate member 31. As a result, the terminal 32 to be joined is slid along the inclined surface 31b, the terminal 32 is fitted into the recess 31a, and then the substantially flat plate member 31 and the terminal 32 are joined and fixed by welding. The electrode 3 is formed. A screw is formed on the terminal 32. Using this screw, the electric wire 4 is attached to the fixed electrode 3 with the bolt 6 and connected thereto.

[0007]

[Effect of the device]

 As described above, by providing the recess and the inclined surface in the substantially flat plate material, the terminals to be joined can be easily positioned, and the terminals to be joined do not shift in position during the joining operation. Further, the recess and the inclined surface can be easily integrally formed by pressing. On the other hand, because of the press working, the accuracy of the position of the recess and the accuracy of fitting the recess with the terminal to be joined are stable. Since the fixed electrode manufactured in this manner has good dimensional accuracy, the insulating strength and mechanical strength can be optimally designed, especially when the fixed electrode is molded by using epoxy resin or the like. Further, when the fixed electrode is fixed to the molding die at two or more places, the dimensional accuracy is good, so that the fixed electrode can be prevented from being deformed or damaged without applying excessive force. In this way, it is a useful idea in terms of practical use and economy.

[Brief description of drawings]

FIG. 1 is an exploded sectional view showing an example of a fixed electrode of the present invention.

FIG. 2 is an exploded sectional view of the fixed electrode of FIG.

FIG. 3 is an exploded sectional view of a conventional fixed electrode.

[Explanation of symbols]

 1 Fuse Tube 2 Movable Electrode 3 Fixed Electrode 31 Plate Material 31a Recess 31b Slope 32 Terminal

Claims (1)

[Scope of utility model registration request] 1. A fixed electrode in which a terminal is joined to a substantially flat plate member is provided with a recess at a position where the terminal of the plate member is joined, and the recess is provided around the recess so that the terminal can slide. A fixed electrode characterized in that the recess and the inclined surface around the recess are integrally formed.