JP5281349B2 - Terminal fittings and terminal fitting manufacturing methods - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To miniaturize terminal metal fitting having a tab support section. <P>SOLUTION: A terminal box 1 of the terminal metal fitting is assembled in a box-shape which opens both front and back faces, and the opening on the front face is set up to be an insertion port of a mating tab. The terminal box 1 includes: an elastic piece 2 on an upper wall 1a; and the tab support section 3 on a lower wall 1b. The elastic piece 2 is extended from a front edge to the back of the lower wall 1b forming the insertion port, and has an indent 2a at the pointed head section. The tab support section 3 is a trapezoid swelled toward the inside of the terminal box 1 by compressing the inside of the upper wall 1a from the lower wall 1b side. The mating tab inserted from the insertion port to the terminal box 1 is sandwiched by the indent 2a of the elastic piece 2 and the tab support section 3. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a terminal fitting provided with a tab receiving portion for sandwiching a mating tab with an elastic piece, and a method for manufacturing the terminal fitting.

  As shown in Patent Document 1 below, the terminal fitting is provided with a tab receiving portion that sandwiches the mating tab with an elastic piece. In the terminal fitting shown in Patent Document 1, a tab receiving portion is formed on the ceiling wall of the cylindrical portion into which the mating tab is inserted, and an elastic piece is formed on the bottom wall.

JP 2007-149504 A

  The terminal fitting is formed by bending a single plate material, and a tab receiving portion is formed by punching a portion constituting the ceiling wall of the plate material from the outer surface side and bending it inward. For this reason, the height of the tube portion is increased by the height of the tab receiving portion bent in the tube portion, and the terminal fitting is enlarged.

  This invention is made | formed in view of such a subject, and it aims at providing the manufacturing method of the terminal metal fitting which can solve the said subject, and a terminal metal fitting.

In order to achieve such an object, the terminal fitting of the present invention includes a terminal box into which a mating tab is inserted, an elastic piece extending from one side wall of the terminal box into the terminal box, and the one side wall. A tab receiving portion that is formed on the other side wall of the terminal box facing each other and sandwiches the mating tab inserted into the terminal box with the elastic piece, and the tab receiving portion includes the other side wall of the terminal box. Compressed from the inside, the other side wall around the area where the tab receiving portion is formed is thinned, and is formed into a shape that bulges inside the terminal box .
Moreover, this invention is formed by compressing the said other side wall facing the convex part with which the said elastic piece clamps the other party tab from the said one side wall side, and making the said tab receiving part thin. It is characterized by being.
Further, the manufacturing method of the terminal fitting of the present invention includes a tab receiving portion that sandwiches a mating tab inserted into the terminal box with a convex portion of an elastic piece extending from one side wall of the terminal box into the terminal box. A terminal fitting manufacturing method comprising: compressing the other side wall of the terminal box facing the one side wall from the inside of the terminal box, and thinning the other side wall around the tab receiving portion forming region; The method includes the step of forming the tab receiving portion in a shape that bulges inside the terminal box .

  According to the present invention, the tab receiving portion is formed by compressing the periphery of the tab receiving portion forming region on the other side wall of the terminal box from one side wall side of the terminal box facing the other side wall so as to be thin. The terminal bracket can be downsized by lowering the height.

Hereinafter, the best mode of the present invention will be described with reference to the drawings.
FIG. 1 is an enlarged cross-sectional view showing a terminal box 1 provided in the terminal fitting of the present embodiment. FIG. 2 is a diagram illustrating a method for forming the tab receiving portion 3 provided in the terminal box 1.

  The terminal metal fitting is assembled by bending a metal plate material such as copper, and an insulation barrel (not used) for crimping the terminal box 1 shown in FIG. 1 connected to the mating tab and the end of the wire coating. And a wire barrel (not shown) for crimping the end of the core wire stripped from the coating of the electric wire.

  The terminal box 1 is assembled in a box shape that opens both front and rear sides, and the opening on the front is used as the insertion opening for the mating tab. A pair of winding pieces 1d extending from the side wall 1c adjacent to the upper wall 1a is wound around the upper wall 1a of the terminal box 1 from the outside. The winding piece 1d covers the front end portion and the rear end portion of the upper wall 1a from the outside.

  The terminal box 1 includes an elastic piece 2 on the upper wall 1a and a tab receiving portion 3 on the lower wall 1b. The elastic piece 2 is bent and extended rearward from the front edge of the lower wall 1b constituting the insertion port, and has an indent 2a at the tip. The tab receiving portion 3 has a trapezoidal shape in which the inner surface of the upper wall 1 a is bulged inside the terminal box 1. The indent 2 a and the tab receiving portion 3 are for securely holding the mating tab in the terminal box 1. The mating tab inserted into the terminal box 1 from the insertion port is sandwiched between the indent 2 a of the elastic piece 2 and the tab receiving portion 3.

  An example of the manufacturing method of a terminal metal fitting is demonstrated. First, the indent 2a is formed in the location used as the elastic piece 2 of the board | plate material which comprises a terminal metal fitting, and the location used as the lower wall 1b is compressed, and the tab receiving part 3 is formed. The tab receiving portion 3 has a lower wall 1b as shown by an arrow A in FIG. 2 (b) around the area where the tab receiving portion 3 is formed in the plate (upper wall 1a) schematically shown in FIG. It is formed by compressing from the side (lower side in FIG. 2) to make it thinner. Then, as shown in FIG. 1, the plate is bent so that the elastic piece 2 is surrounded by the upper wall 1a, the lower wall 1b, and the side wall 1c, and the wound piece is extended sideways from the front end portion and the rear end portion of the side wall 1c. The terminal box 1 is assembled by winding 1d around the front end portion and the rear end portion of the upper wall 1a from the outside. Along with this, an insulation barre (not shown) and a wire barrel (not shown) are also assembled from the same plate material.

  For example, as shown in FIG. 3, when the tab receiving portion 30 is formed in a shape in which the upper wall 1 a is driven out from the outer side (upper side) of the terminal box 1 and is curved toward the inner side (lower side) of the terminal box 1. The height of the upper wall 1a is a height H1 obtained by adding a height H11 corresponding to the curvature of the tab receiving portion 3 in the terminal box 1 to the thickness T of the plate material forming the upper wall 1a. On the other hand, as described above with reference to FIG. 2, the upper wall 1a is compressed from the inner side (lower side) of the terminal box 1, and the upper wall 1a around the area where the tab receiving portion 3 is formed is made thinner. When the tab receiving portion 3 is bulged inside the box 1, the height H2 of the upper wall 1a is equal to the thickness T of the plate material forming the upper wall 1a. That is, the height H2 is lower than the height H1 by the height H11 of the tab receiving portion 3 curved in the terminal box 1 of the tab receiving portion 3. For this reason, the height of the terminal box 1 can be kept low correspondingly, and the terminal fitting can be miniaturized.

  As described above, according to the present embodiment, the tab receiving portion 3 is formed by compressing the periphery of the area where the tab receiving portion 3 is formed on the upper wall 1a of the terminal box 1 from the lower wall 1b side so as to be thin. Therefore, the terminal box 1 can be reduced in height and the terminal fitting can be reduced in size.

  Moreover, according to this embodiment, since the tab receiving part 3 is formed by compressing a board | plate material and thinning the circumference | surroundings, the tab receiving part 3 of a desired shape is easily processed also with a small terminal metal fitting. be able to.

  In addition, the shape and formation position of the tab receiving part 3 are arbitrary if the other party tab inserted in the terminal box 1 can be clamped with the elastic piece 2, for example, it opposes the indent 2a in the upper wall 1a. It may be formed only at the place to be. Moreover, the manufacturing method of a terminal metal fitting is the process of forming the tab receptacle part 3 by compressing the periphery of the formation area of the tab receptacle part 3 in the board | plate material which comprises the upper wall 1a from the lower wall 1b side, and making it thin. If it contains, it is arbitrary.

It is sectional drawing which expands and shows the terminal box with which the terminal metal fitting of one Embodiment of this invention is provided. It is a figure explaining the formation method of the tab receiving part with which the terminal box shown in FIG. 1 is provided. It is a figure explaining the formation method of the tab receiving part with which the conventional terminal metal fitting is provided.

Explanation of symbols

1 Terminal box 1a Upper wall 1b Lower wall 1c Side wall 1d Winding piece 2 Elastic piece 2a Indent 3 Tab receiving part

Claims (3)

A terminal box into which a mating tab is inserted, an elastic piece extending from one side wall of the terminal box into the terminal box, and formed on the other side wall of the terminal box facing the one side wall, and inserted into the terminal box A tab receiving portion for sandwiching the mated tab with the elastic piece,
The tab receiving portion is formed in a shape that compresses the other side wall from the inside of the terminal box, thins the other side wall around the formation region of the tab receiving portion, and bulges to the inside of the terminal box. Terminal fittings characterized by   The tab receiving portion is formed by compressing and thinning the other side wall facing the convex portion provided for the elastic piece to hold the mating tab from the one side wall side. The terminal fitting according to claim 1. A manufacturing method of a terminal fitting including a tab receiving portion that sandwiches a mating tab inserted into a terminal box with a convex portion of an elastic piece extending from one side wall of the terminal box into the terminal box,
The other side wall of the terminal box facing the one side wall is compressed from the inside of the terminal box, the other side wall around the tab receiving portion forming region is thinned, and swells inside the terminal box. The manufacturing method of the terminal metal fitting characterized by including the process of forming the said tab receiving part .

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