JP5913904B2 - Terminal - Google Patents

Description

  The present invention relates to a terminal accommodated in a connector housing.

  A conventional terminal of this type is disclosed in Patent Document 1. As shown in FIGS. 9 to 10, the female terminal 50 as a terminal is formed by bending a conductive metal plate having a predetermined shape. The female terminal 50 has a terminal connection portion 51. The terminal connection part 51 includes a box part 52 and an elastic contact part 58 disposed inside the box part 52. The box 52 is bent from the bottom wall 53, one side wall 54 bent from the side end of the bottom wall 53, the top wall 55 bent from the upper end of the one side wall 54, and the side end of the top wall 55. The other side wall 56 is configured.

  The elastic contact portion 58 extends through a connecting portion 56 a at the side end of the other side wall 56. The elastic contact portion 58 is bent at the position of the connecting portion 56 a and is arranged so that the support end side thereof overlaps the upper surface of the bottom wall 53. A support protrusion 58 a is provided on the support end side of the elastic contact portion 58 and on the opposite side of the connecting portion with the other side wall 56. The support protrusion 58 a is locked in the support hole 54 a of one side wall 54. With such a configuration, the support end side of the elastic contact portion 58 is supported by both side walls 54 and 56.

  The bottom wall 53 and the rear end portion of the elastic contact portion 58 are configured as a locking portion 59. As for the latching | locking part 59, the rear end surface of both the bottom wall 53 and the elastic contact part 58 is made into the latching surface 59a.

  In a state where the female terminal 50 is accommodated in a connector housing (not shown), the lance 60 of the connector housing is locked to the locking portion 59. Thus, the female terminal 50 is held (positioned) in the connector housing.

JP 2008-123740 A

  However, in the conventional female terminal 50, since the bottom wall 53 and the other side wall 56 of the box portion 52 are simply abutted against each other, the box portion 52 is caused by a reaction force or the like from a mating terminal (not shown). Easy to open. If the box 52 is opened, the electrical contact reliability may be reduced.

  Further, since the locking margin of the locking portion 59 is the total thickness (two plate thicknesses) of the bottom wall 53 and the elastic contact portion 58, the locking margin is not sufficient and the terminal holding force is small. When the box portion 52 is opened, the locking surface 59a may be displaced and the locking allowance may be further reduced.

  Therefore, the present invention has been made to solve the above-described problems, and provides a terminal capable of both preventing deterioration of electrical contact reliability due to opening of a box part and improving terminal holding power. For the purpose.

The present invention is a conductive metal plate and provided with a terminal connection portion having a plurality of plate portions connected via a bending portion, and the terminal connection portion includes a box portion having an elastic contact portion therein. And a locking part provided in the box part, and in the accommodated state of the connector housing, a terminal on which the housing side locking part is locked to the locking part, the box part being bent the one that at both ends of the plate portion and the other of said plate portions with each other are superimposed, the locking portion is extended from the other plate portion, sandwiching the end portion of the one plate portion, sandwiched outer surface engaging It is a terminal characterized by being a stop surface.

  It is preferable that said one plate location used as the both ends of bending is a top wall, and said other plate location is an elastic contact part.

  According to the present invention, one plate portion and the other plate portion which are both ends of the bending are overlapped with each other, and the end portion of the one plate portion is sandwiched by the locking portion extending from the other plate portion. Therefore, the box part does not open easily due to the reaction force from the mating terminal. Since the locking margin of the locking portion is the thickness of the three plates, the locking margin is sufficiently ensured. In addition, since the box opening is prevented as described above, there is no reduction in the locking allowance due to the box opening. From the above, it is possible to prevent both the electrical contact reliability from being lowered by opening the box and to improve the terminal holding force.

1A and 1B show an embodiment of the present invention, in which FIG. 1A is a perspective view of a female terminal, and FIG. 2B is a perspective view of a female terminal viewed from a direction different from FIG. 1 is a plan view of a female terminal according to an embodiment of the present invention. 1 is a side view of a female terminal according to an embodiment of the present invention. 1 is a front view of a female terminal according to an embodiment of the present invention. FIG. 5 shows an embodiment of the present invention, in which (a) is a cross-sectional view taken along the line AA in FIG. 4, and (b) is an enlarged view of a portion B in (a). 1 is an exploded view of a female terminal according to an embodiment of the present invention. It is a front view of the connector housing which showed one Embodiment of this invention and accommodated the female terminal. One Embodiment of this invention is shown, (a) is CC sectional view taken on the line of FIG. 7, (b) is the D section enlarged view of (a). It is a perspective view of a female terminal showing a conventional example. It is a front view of a female terminal showing a conventional example. It is the EE sectional view taken on the line of FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 to 8 show an embodiment of the present invention. As shown in FIGS. 1-6, the female terminal 1 which is a terminal is formed by bending the conductive metal plate of a predetermined shape (shown in FIG. 6). The female terminal 1 includes a terminal connecting portion 2 and a wire connecting portion 30 provided on the rear side of the terminal connecting portion 2 via a throttle connecting portion 29.

  The wire connection part 30 has a wire barrel part 31 and an insulation barrel part 32. The wire barrel portion 31 and the insulation barrel portion 32 have bottom walls 31a and 32a and a pair of tongue pieces 31b and 32b protruding from both side ends of the bottom walls 31a and 32a, respectively. The bottom walls 31a and 32a are bent in an arc shape loosely toward the inside. In the wire barrel portion 31, an end portion of an electric wire (not shown) is in a state where the outer skin is removed, that is, only the conductor is caulked and fixed. An end of an electric wire (not shown) is caulked and fixed to the insulation barrel portion 32 including the outer skin.

  The terminal connection part 2 has a box part 3 into which a male terminal (not shown) as a counterpart terminal is inserted, and a locking part 20 provided in the box part 3. The box portion 3 includes a bottom wall 4, a pair of side walls 5, 6 bent vertically upward from the left and right side edges of the bottom wall 4, and a horizontal direction inward from the upper end of one side wall 5. The top wall 7 is bent, and the support end side of the elastic contact portion 8 is bent horizontally inward from the upper end of the other side wall 6. A male terminal (not shown) as a mating terminal is inserted into the box portion 3.

  The support end side of the elastic contact portion 8 also serves as a partial plate of the box portion 3. In the box part 3, the top wall 7 which is one plate part serving as both ends of the bending and the elastic contact parts 8 serving as the other plate part are overlapped.

  A stabilizer 9 extends from a part of the upper end of the other side wall 6. The stabilizer 9 is not bent like the top wall 7 with respect to the other side wall 6 but protrudes upward.

  The elastic contact portion 8 has one support end side extended from the side end of the other side wall 6. As described above, the support end side of the elastic contact portion 8 also serves as a part of the box portion 3 and is disposed so as to overlap the lower surface of the top wall 7. A support protrusion 8 a is integrally provided on the other support end side of the elastic contact portion 8. The support protrusion 8 a is locked to the support hole 10 at the connection portion between the one side wall 5 and the top wall 7. With such a configuration, the support end of the elastic contact portion 8 is supported by the box portion 3 on both sides thereof. The elastic contact portion 8 is disposed in the box portion 3, and the tip side thereof extends toward the front of the box portion 3. The most distal end portion of the elastic contact portion 8 is curved in order to avoid abutment with the tip of a male terminal (not shown) which is a counterpart terminal. A bent fulcrum portion 7 a protruding from below the top wall 7 is in contact with an intermediate portion between the support end side and the tip end side of the elastic contact portion 8. The elastic contact portion 8 and the bending fulcrum portion 7a are bent and deformed.

  The locking portion 20 extends from the support end of the elastic contact portion 8 toward the rear of the terminal. The latching portion 20 sandwiches the rear end portion of the top wall 7, and the sandwiched outer surface is a latching surface 20a. That is, the latching | locking part 20 is extended from the elastic contact part 8 which is the other plate location, and has pinched | interposed the rear-end part of the top wall 7 which is one plate location.

  The female terminal 1 configured as described above is accommodated in the connector housing 40 as shown in FIGS. 6 and 7. That is, the terminal housing chamber 41 is provided in the connector housing 40. Each terminal accommodating chamber 41 has a mating terminal insertion hole 41a opened on the front end side and a wire lead-out hole 41b opened on the rear end side. The connector housing 40 is provided with an elastic lance 43 that is a housing side locking portion so as to face the terminal accommodating chamber 41.

  Next, the housing operation of the female terminal 1 will be described. The female terminal 1 is inserted from the wire drawing hole 41 b on the rear side of the terminal accommodating chamber 41. Then, the front end of the box portion 3 of the female terminal 1 interferes with the elastic lance 43, but the elastic lance 43 is bent and deformed to allow the female terminal 1 to be inserted. When the female terminal 1 is inserted to the insertion completion position, as shown in detail in FIG. 8, the elastic lance 43 is restored and deformed and locked to the locking portion 20. As a result, the female terminal 1 is held (positioned) in the terminal accommodating chamber 41.

  As described above, the top wall 7 serving as both ends of the bending of the box portion 3 and the elastic contact portion 8 are overlapped with each other, and the end portion of the top wall 7 extends from the elastic contact portion 8. Therefore, the box portion 3 is not easily opened by a reaction force from a male terminal (not shown) which is a counterpart terminal. The locking allowance of the locking portion 20 is the thickness dimension D (shown in FIG. 8) of three plate locations (the plate thickness of the top wall 7 and the two plate thicknesses of the locking portion 20). A sufficient fee is secured. In addition, since the box opening is prevented as described above, there is no reduction in the locking allowance due to the box opening. From the above, it is possible to prevent both the electrical contact reliability from being lowered by opening the box 3 and to improve the terminal holding force.

  In this embodiment, one plate location that becomes both ends of the bending of the box portion 3 is the top wall 7, and the other plate location is the elastic contact portion 8. Accordingly, since the elastic contact portion 8 also serves as a part of the box portion 3, the components are simplified. Since the elastic contact portion 8 is supported by the box portion 3 via the locking portion 20, the support end of the elastic contact portion 8 is firmly supported, and a decrease in contact pressure due to deformation of the elastic contact portion 8 can be prevented as much as possible. .

1 Female terminal (terminal)
2 Terminal connection portion 3 Box portion 8 Elastic contact portion 20 Locking portion 20a Locking surface 30 Wire connection portion 40 Connector housing 43 Elastic lance (housing side locking portion)

Claims (2)

A terminal connection portion having a plurality of plate portions connected via a bent portion is provided by a conductive metal plate , and the terminal connection portion includes a box portion having an elastic contact portion therein, and the box portion A locking part provided in the connector housing, and in the accommodated state of the connector housing, a terminal on which the housing side locking part is locked to the locking part,
The box portion, the plate portion and the other of said plate portions to each other one of which at both ends of the folding are superposed,
The terminal is characterized in that the locking portion extends from the other plate portion, sandwiches an end portion of the one plate portion, and the sandwiched outer surface serves as a locking surface.
The terminal according to claim 1,
The terminal according to claim 1, wherein the one plate portion serving as both ends of the bending is a top wall, and the other plate portion is an elastic contact portion.

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