JP2010102831A - Male terminal and connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a male terminal capable of regulating suck-up of filler resin, and to provide a connector capable of preventing the degradation of electrical performance. <P>SOLUTION: In the male terminal, a non-contact range B is formed in a state N where no space is formed therein because overlapping surfaces of internal metal plates are closely attached. Such a state is formed by an indent 6. The indents 6 are provided vertically in pairs to form the state N without space. Each indent 6 is provided to concave an external surface of the non-contact range B. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a male terminal having a pin-like electrical contact portion, and to a connector for injecting a filling resin between the male terminal and a housing.

  The following Patent Document 1 discloses a connector that is mounted on an automobile and used for connecting various devices. This connector is configured to include a male terminal made of a conductive rectangular wire material and a synthetic resin housing having an insulating property. The male terminal has a structure that is press-fitted into the housing. The housing has a plurality of terminal holding holes for press-fitting male terminals into the terminal holding wall. An insertion hole is formed behind the terminal holding hole. After the male terminal is press-fitted into the insertion hole, the filling resin is injected. After the filling resin is cured, the male terminal is more firmly fixed to the housing.

By the way, as for the male terminal, besides the one made of a rectangular wire as described above, a male terminal having an electric contact portion formed by bending a conductive metal plate into a pin shape is also widely known. For example, in the male terminal disclosed in Patent Document 2 below, since the cross-sectional shape of the electrical contact portion is a substantially square shape, it can be used as a substitute for the male terminal made of a square wire. .
JP 2006-24471 A JP 2006-179502 A

  In the case of a rectangular wire, the electrical contact portion is solid, but in the case of an electrical contact portion formed by bending a metal plate into a pin shape, a gap may occur in the overlapping portion of the metal plates. If there is a gap, the filling resin may move (suck up) to the tip of the electrical contact part due to capillary action, which leads to an increase in electrical resistance, etc. Has the problem of causing a decline in the performance.

  This invention is made | formed in view of an above-described situation, and makes it a subject to provide the male terminal which can control the sucking of the resin for filling. It is another object of the present invention to provide a connector that can prevent a decrease in electrical performance.

  In order to solve the above-mentioned problems, the male terminal of the present invention according to claim 1 is a male terminal formed by bending a conductive metal plate to form a pin-shaped electrical contact portion, wherein the electrical contact portion is A contact range part that contacts the female terminal to be connected, and a non-contact range part that continues to the contact range part, and the outer surface of the non-contact range part among these contact range parts has the metal It is characterized in that an indent formed by pressing in a direction in which the overlapping surfaces of the plates are in close contact with each other is provided.

  According to the present invention having such a feature, even if a gap is generated in the overlapping portion of the metal plates in the pin-shaped electrical contact portion, only the portion having the indent is eliminated by the indentation. Even if the filling resin tries to move to the tip side of the electrical contact portion by capillary action, the sucking is stopped at the indented portion. According to the present invention, it is possible to avoid the filling resin from being sucked up more than necessary.

  The present invention does not eliminate the gap generated in the overlapping portion of the metal plates in the entire electrical contact portion, and does not compress the entire electrical contact portion in order to eliminate the gap. The shape is stable. In the male terminal of the present invention, since the indent does not come into contact with the female terminal that is the connection partner, the connection state with the female terminal is maintained well.

  The connector of the present invention according to claim 2, which has been made to solve the above problems, includes a male terminal and a synthetic resin housing that accommodates the male terminal, and the male terminal and a terminal accommodating chamber of the housing. In a connector for injecting a filling resin between the two, the male terminal according to claim 1 is used as the male terminal.

  According to the present invention having such a feature, even if the filling resin is injected between the terminal accommodating chamber and the male terminal of the housing, the filling resin is sucked up to the indented portion. Since the filling resin does not suck up to the contact range where the female terminal to be connected contacts, it is possible to reliably avoid an increase in electrical resistance.

  According to the first aspect of the present invention, by providing an indent on the outer surface of the non-contact range portion in the electrical contact portion, there is an effect that it is possible to regulate the sucking up of the filling resin at the time of manufacturing the connector. .

  According to the second aspect of the present invention, by using the male terminal that restricts the suction of the filling resin, the male terminal itself does not cause an increase in electrical resistance. It is possible to prevent the performance from being lowered.

  Hereinafter, description will be given with reference to the drawings. FIG. 1 is a view showing an embodiment of a male terminal of the present invention, FIG. 1 (a) is a perspective view of the male terminal, FIG. 1 (b) is a cross-sectional view of a contact range portion in an electric contact portion, FIG. (C) is sectional drawing of the non-contact range part in an electrical contact part. 2A is a manufacturing explanatory view of a male terminal, and FIG. 2B is a cross-sectional view of a connector having a male terminal.

  1 and 2 (a), reference numeral 1 indicates a male terminal of the present invention. The male terminal 1 is formed into a shape as shown in the figure by punching a conductive metal plate to form a punched shape 1 'and then bending it multiple times. The male terminal 1 includes an electrical contact portion 2 that is a connection portion with a female terminal (not shown) that is a connection partner, a wire connection portion 4 that is a connection portion with a terminal of an electric wire 3 (see FIG. 2B), and these It has the intermediate part 5 which intervenes and connects between the electric contact part 2 and the electric wire connection part 4. Hereinafter, each part of the male terminal 1 will be described.

  The electrical contact portion 2 is formed into a pin shape having a substantially quadrangular cross section when bent so as to have a “no” shape (“G” shape). The electrical contact portion 2 is formed in a long and straight shape. If two ranges are set in such an electrical contact portion 2, and the range on the distal end side is a contact range portion A and the range on the proximal end side is a non-contact range portion B, the contact range portion A is not shown above. It is a range to be inserted into the electrical contact portion in the form of a female terminal box (assumed to be an example). In the electrical contact portion 2, the contact range portion A is inserted into a box-shaped electrical contact portion of a female terminal (not shown), thereby being brought into electrical contact with and connected to the elastic contact piece. In the cross section of the contact area A of this embodiment, a slight gap S is generated between the overlapping surfaces of the metal plates as shown in FIG.

  The non-contact range portion B is continuous with the contact range portion A. The non-contact range portion B is a range that is not inserted into a box-shaped electrical contact portion of a female terminal (not shown), or a range that does not electrically contact the elastic contact piece. In such a non-contact area B, the overlapping surfaces of the metal plates are in close contact with each other to form a no-gap N state (or the gap S is reduced to such an extent that no capillary phenomenon occurs). Such a state is formed). Such a state is formed by the indent 6. The indents 6 are provided so as to form a pair in the upper and lower directions in the figure so as to form a state of no gap N. The indent 6 is provided so as to dent the outer surface of the non-contact area B.

  The indent 6 is pressed by pressing from above and below in the drawing to dent the outer surface, and is formed in a shape that allows the overlapping surfaces of the metal plates to be in close contact with each other (pressing in the direction in which the above surfaces are separated) For example, the pressure in the left-right direction in the figure has a high risk of the surfaces being separated from each other, so that the indent 6 is not provided in this embodiment. The indent 6 is disposed at a desired position in the non-contact area B. The number of indents 6 is not particularly limited as long as a state with no gap N can be formed.

  The electric wire connection portion 4 has a pair of caulking pieces 7. The male terminal 1 is connected to the end of the electric wire 3 by caulking the caulking piece 7.

  In the present embodiment, the intermediate portion 5 is formed in a substantially box shape in accordance with the shape of the terminal accommodating chamber described later. A lance, which will be described later, is caught on the intermediate portion 5, whereby the male terminal 1 is locked.

  In FIG. 2B, reference numeral 11 indicates the connector of the present invention. The connector 11 includes the male terminal 1 of the present invention and a synthetic resin housing 12 that houses a plurality of male terminals 1. The connector 11 is also configured to inject a filling resin 14 between the male terminal 1 and the terminal accommodating chamber 13 of the housing 12 (the filling resin 14 is a small circle in the figure). (It is assumed that the filling resin 14 of this embodiment uses a known potting resin). The connector 11 has a waterproof structure in this embodiment.

  The male terminal 1 is connected to the terminal of the electric wire 3. The electric wire 3 is provided with a rubber plug 15.

  The housing 12 has a fitting portion 16 for a mating connector (not shown), a plurality of terminal accommodating chambers 13, and a rubber plug mounting portion 17 inside thereof. An O-ring 18 is provided on the outside of the housing 12. An electrical contact portion 2 of the male terminal 1 housed and locked in the terminal housing chamber 13 protrudes from the fitting portion 16. A lance 19 for locking the intermediate part 5 of the male terminal 1 is formed in the terminal accommodating chamber 13.

  In the above configuration and structure, when the male terminal 1 provided at the end of the electric wire 3 is inserted into the corresponding terminal accommodating chamber 13 from the rubber plug mounting portion 17, the male terminal 1 is locked by the lance 19, thereby preventing the disconnection. Is done. At this time, the rubber plug 15 is mounted on the rubber plug mounting portion 17 to prevent moisture from entering from the electric wire 3 side. When the filling resin 13 is injected between the male terminal 1 and the terminal accommodating chamber 13 from such a state, a series of manufacturing for the connector 11 is completed.

  Since the connector 11 uses the male terminal 1, even if the filling resin 14 is injected, the filling resin 14 does not come out of the tip of the electrical contact portion 2 due to a capillary phenomenon, for example. This is because the indent 6 causes the electrical contact portion 2 of this portion to be in a state of no gap N, and the suction of the filling resin 14 can be restricted.

  As described above, according to the present invention, by providing the indent 6 on the outer surface of the non-contact area B in the electrical contact portion 2, it is possible to restrict the suction of the filling resin 14. Therefore, the male terminal 1 itself does not cause an increase in electrical resistance, and the connector 11 can prevent a decrease in electrical performance.

  It goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

It is a figure which shows one Embodiment of the male terminal of this invention, (a) is a perspective view of a male terminal, (b) is sectional drawing of the contact range part in an electrical contact part, (c) is the non-contact in an electrical contact part. It is sectional drawing of a contact range part. (A) is manufacture explanatory drawing of a male terminal, (b) is sectional drawing of a connector provided with a male terminal.

Explanation of symbols

A contact range B B non-contact range S gap N no gap 1 male terminal 2 electrical contact 3 wire 4 wire connection 5 intermediate 6 indent 7 crimping piece 11 connector 12 housing 13 terminal accommodating chamber 14 filling resin 15 rubber Plug 16 Fitting part 17 Rubber plug mounting part 18 O-ring 19 Lance

Claims (2)

In the male terminal formed by bending a conductive metal plate to form a pin-shaped electrical contact portion,
The electrical contact portion has a contact range portion to which a female terminal to be connected contacts, and a non-contact range portion continuous with the contact range portion, and an outer surface of the non-contact range portion among these contact range portions The male terminal is provided with an indent formed by pressing in a direction in which the overlapping surfaces of the metal plates are in close contact with each other. In a connector comprising a male terminal and a synthetic resin housing for housing the male terminal, and injecting a filling resin between the male terminal and the terminal housing chamber of the housing,
The male terminal of Claim 1 is used as said male terminal. The connector characterized by the above-mentioned.

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