JPH0592927U - Switch pole board connection structure - Google Patents

Abstract

(57) [Abstract] [Purpose] The switch pole board does not undergo thermal deformation due to the heat of the soldering of the harness, and the opening of the switch pole board provided to radiate the heat of soldering is also used for positioning the movable contact piece. To do. [Configuration] A terminal 1, a switch pole board 4, and a movable contact piece 5 are provided. The terminal 1 has a soldering portion 11 for soldering the harness 2. Switch pole board 4
The terminal 1 is insert-molded, and a part thereof is opened to expose the terminal 1 in the opening 41, and the soldering portion 11 of the terminal 1 is projected. The movable contact piece 5 has one end 51 fixed to the terminal 1 exposed at the opening 41 of the switch pole board 4 and the contact 7 fixed to the other end 52.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a connection structure of a switch pole board.

[0002]

[Prior Art]

 Conventionally, when a harness is soldered to the switch pole board, the heat of the soldering deforms the switch pole board, and the mounting tolerance of the movable contact piece assembled to the switch pole board increases, resulting in poor contact pressure. There was a problem that various troubles such as occurred. In order to deal with this, for example, Japanese Utility Model Publication No. 47-112 discloses a technique for connecting using spot welding.

[0003]

[Problems to be solved by the device]

 However, if the harness to be connected to the switch board is a large number of thin wires twisted together, spot welding is difficult to perform and there is concern about the adhesion performance. Therefore, there has been a demand for a harness connection technology that enables soldering without causing thermal deformation of the switch pole board.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention has a terminal having a soldering portion for connecting a harness, the terminal is insert-molded, and a part of the terminal is opened to expose the terminal in the opening, and A switch pole having a switch pole plate with the above-mentioned soldering portion of the terminal protruding, and a movable contact piece having one end fixed to the terminal exposed at the opening of the switch pole plate and a contact fixed to the other end. Provides board connection structure.

[0005]

【Example】

 The accompanying drawings are drawings showing a preferred embodiment of the present invention. In the figure, reference numeral 1 is a terminal having a soldering portion 11 for soldering the harness 2 with the solder 3. The terminal 1 is made of a material such as copper or brass. Reference numeral 4 is a switch pole board in which the terminal 1 is insert-molded, a part of which is opened to expose the terminal 1 in the opening 41, and the soldering portion 11 of the terminal 1 is projected. . The switch pole board 4 is made of a material such as polypropylene. Numeral 5 is a movable contact piece having one end 51 fixed to the terminal 1 exposed to the opening 41 of the switch pole board 4 by using a rivet 6 and a contact 7 fixed to the other end 52. The movable contact piece 5 is made of a material such as phosphor bronze.

In the above structure, the heat when soldering the harness 2 to the terminal 1 is diffused to the entire terminal 1, part of the heat is transferred to the switch pole board 4, and part of the heat is transferred to the terminal pole board 4. 1 is transmitted to the harness 2, and a part of the heat is radiated into the air from the terminal 1 exposed in the opening 41 of the switch pole board 4. In this way, the heat of the soldering is radiated into the air at the opening 41 of the switch pole board 4, and the terminal 1 has a shape protruding from the switch pole board 4 and is transferred to the harness 2. As the ratio increases, the amount of heat transferred to the switch pole board 4 decreases. Therefore, the switch pole board 4 is not thermally deformed by the heat of soldering.

Further, since the one end 51 of the movable contact piece 5 is arranged in the opening 41 that exposes the terminal 1, the one end 51 of the movable contact piece 5 can be supported by the opening 41, and the movable contact piece 5 can be supported. The piece 5 is reliably positioned. That is, the opening 41 of the switch pole board 4 exposing the terminal 1 contributes to both the heat dissipation of the soldering and the positioning of the movable contact piece 5.

[0008]

[Effect of the device]

 Since this invention has the above-described structure and operation, the switch pole board is not thermally deformed by the heat of the soldering of the harness, and the switch pole board is provided to radiate the heat of the soldering. This has the excellent effect that the opening of can also be used for positioning the movable contact piece.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing a preferred embodiment of the present invention.

FIG. 2 is a plan view of what is shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal 2 Harness 3 Solder 4 Switch pole board 5 Moving contact 7 Contact 11 Soldering part 41 Opening 51 One end 52 The other end

Claims (1)

[Scope of utility model registration request] 1. A terminal having a soldering part for connecting a harness, the terminal is insert-molded, a part of which is opened to expose the terminal, and the soldering part of the terminal is projected. And a movable contact piece having one end fixed to a terminal exposed at the opening of the switch pole board and a contact fixed to the other end.