JP2007242294A - Electrical connection structure - Google Patents

Abstract

The present invention reduces the overall size and prevents an internal connection from causing a failure.
A male housing 1 to which a male terminal 3 inserted and fixed to a wiring board 4 is attached is inserted into an insertion hole 12 of a female housing 11 to which a female terminal 5 to which an electric wire 6 is connected for electrical connection. In the electrical connection structure, the female housing 11 press-fitted portion of the female terminal 5 is bent so as to rise upward, and a U-turn at the upper end is lowered to form a spring contact portion 5A that comes into elastic contact with the male terminal 3.
[Selection] Figure 1

Description

  The present invention relates to an electrical connection structure for connecting a wiring board and an electric wire.

  As a conventional electrical connection structure, as shown in FIGS. 3 and 4, a female terminal 102 to which an electric wire 101 is connected is accommodated in a female housing 100, and the male housing 1 is inserted into an insertion hole 103 of the female housing 100. It is known that a male terminal 3 attached to the child 2 is inserted, and a spring contact portion 102A of a female terminal 102 is elastically contacted with the male terminal 3 for electrical connection. The male terminal 3 is inserted into and fixed to the wiring board 4 and soldered to the conductor of the wiring board 4. A cover 10 is attached to the female housing 100.

As a fixing structure between the wiring board 4 and the male terminal 3, for example, conductors are formed on both surfaces of a rigid base material by printing or the like, and are electrically connected to each other through plated through holes in which pins can be inserted. It is known that the terminals of electronic parts are inserted into these plated through holes and fixed by soldering, and the base ends of the male terminals 3 are similarly inserted into the plated through holes and fixed by soldering. Yes. It is also known that the male terminal 3 is elastically contacted with the female terminal 102 by housing the distal end side of the male terminal 3 in a connector housing and housing the female connector in the connector housing (see Patent Document 1). .
JP 2001-15951 (3rd page, FIG. 1)

  Since the conventional female terminal 102 has a structure that is held by being press-fitted into the female housing 100, it is necessary to secure a distance L (see FIGS. 3 and 4) for holding the female terminal 102 in the press-fitting direction. . Since this distance L is required, the height H (see FIGS. 3 and 4) as an electrical junction box from the wiring board 4 is increased, which hinders internal connection with limited mounting space and cannot be made compact. There was a drawback.

  Therefore, the present invention provides an electrical connection structure in which the female terminal is devised to reduce the height from the wiring board, to be compact, and to prevent a failure in internal connection without changing the structure on the male housing side. The purpose is to do.

  In order to achieve the above-described object, the present invention inserts a male housing having a male terminal inserted and fixed into a wiring board into an insertion hole of a female housing having a female terminal to which an electric wire is connected, thereby establishing an electrical connection. In the electrical connection structure to be achieved, a female housing press-fitted portion of the female terminal is bent so as to rise upward, and a spring contact portion is formed which makes a U-turn at the upper end and descends to elastically contact the male terminal.

  As described above, according to the present invention, electrical connection is established by inserting a male housing with a male terminal inserted and fixed into a wiring board into an insertion hole of a female housing with a female terminal connected with an electric wire. In the electrical connection structure to be designed, the female housing press-fitting part of the female terminal is bent so as to rise upward, and a U-turn is lowered at the upper end to form a spring contact portion that elastically contacts the male terminal. The female terminal press-fitting part can be provided at the part of the female housing that faces, and the dimension in the height direction from the wiring board can be reduced. By reducing the height in this way, the electrical junction box is also compact and easy to connect internally.

  Hereinafter, preferred embodiments of the present invention will be described with reference to FIGS. 1 and 2.

  In FIG. 1, a male terminal 3 is attached to an inserter 2 provided in a male housing 1, and the male terminal 3 is inserted and fixed to a wiring board 4. The configuration of the male housing 1 is the same as the conventional configuration. The insert 2 of the male housing 1 is inserted into the insertion hole 12 of the female housing 11, and the female terminal 5 is brought into contact with the male terminal 3 attached to the insert 2 so that electrical connection is achieved as in the conventional case. It is.

  In the female housing 11 according to the present invention, the female terminal 5 is press-fitted into the groove 13. In FIG. 1, the female terminal 5 is bent so that the press-fitted portion rises upward, and U-turns at the upper end and descends to form a spring contact portion 5A that makes elastic contact with the male terminal 3. . The bent up part is referred to as an upright part 5B, the subsequent part as a U-turn part 5C, and the subsequent part as a tip part 5D. Moreover, the connection part 7 with the electric wire 6 is formed in the base end part 5E of the male terminal 3 by soldering.

  FIG. 2 is a perspective view of the female housing 11 as viewed from below, and a plurality of female terminals 5 are press-fitted into the grooves 13. The inserter 2 and the male terminal 3 are inserted into the insertion hole 12 of the female housing 11, and the male terminal 3 and the female terminal 5 come into contact with each other, so that electrical connection is achieved.

Sectional drawing which shows embodiment of this invention. The perspective view which looked at the female housing from the bottom. Sectional drawing of a prior art example. The perspective view which looked at the conventional female housing from the bottom.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Male housing 3 Male terminal 4 Wiring board 5 Female terminal 5A Spring contact part 6 Electric wire 11 Female housing

Claims (1)

In the electrical connection structure for inserting the male housing attached with the male terminal inserted and fixed to the wiring board into the insertion hole of the female housing attached with the female terminal to which the electric wire is connected, for electrical connection,
An electrical connection structure characterized in that a female housing press-fitting portion of a female terminal is bent so as to rise upward, and a spring contact portion is formed that makes a U-turn at the upper end and descends to elastically contact the male terminal.

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