JP2015103484A - Connecting terminal for insertion and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To downsize an insertion part and also to maintain strength of the insertion part.SOLUTION: An insertion part 11 comprises: a wound part 11a; and a core material part 11c having a thin-strip shape and connected to the wound part 11a through a connecting piece 11b. The core material part 11c is rolled inside the wound part 11a by folding the same, and includes a widened part 11k at the tip end part thereof and a projection piece 11l formed in a part of the widened part. In the insertion part 11, the connecting piece 11b is folded to arrange the core material part 11c above a lower surface part 11e of the wound part 11a, and the projection piece 11l is fitted to a hole part 11j of the lower surface part 11e to position the core material part 11c and also to avoid the core material part 11c from positional shifting with respect to the wound part 11a. Simultaneously, the connecting piece 11b is cut off from the core material part 11c at an A part, and is cut off from a projection part 11i at a B part. Then, side surface parts 11f and 11g are raised and further, an upper surface part 11d is folded to roll in the core material part 11c.

Description

  The present invention relates to a connection terminal for insertion to be incorporated in an electrical connector and connected to a counterpart receiving connection terminal, and a method for manufacturing the same.

  In recent years, as miniaturization and multipolarization of connectors are required, connection terminals incorporated in the connectors are also miniaturized. In the connection terminal for insertion, it is desired that the diameter of the rod-shaped insertion portion is reduced to, for example, about 1 mm or less while maintaining strength.

  On the other hand, for example, a type in which another material is wound around the insertion portion as a core as in Patent Document 1 is known.

JP 2011-18568 A

  However, in this conventional example, the strength can be maintained by selecting the material of the core material of another material, but the core material must be carried from another place and inserted during the assembly process. The equipment is also complicated and the assembly becomes extremely troublesome.

  An object of the present invention is to solve the above-described problems, provide an insertion connection terminal that can reduce the size of the insertion portion and can easily maintain the strength, and a method for manufacturing the same.

  The connecting terminal for insertion according to the present invention for achieving the above object is a single conductive metal comprising a strip-shaped core member and a winding part in which the core member is connected via a connecting piece. It is manufactured by punching and bending a plate, having a rod-shaped insertion part in the front, and a connection terminal for insertion having an electric wire crimping part in the rear, wherein the insertion part is the separated core material part It is located in the center part, The said core material part was wound by the said winding part, It is characterized by the above-mentioned.

  In addition, the manufacturing method of the connection terminal for insertion according to the present invention is a connection for insertion in which one conductive metal plate is punched and bent, a rod-shaped insertion part is provided in the front, and a wire crimping part is provided in the rear. A method for manufacturing a terminal, the step of forming a winding part that is a peripheral part of the insertion part and a strip-shaped core part connected from the winding part via a connecting piece by punching; A step of positioning the core portion at the center of the winding portion, a step of cutting the core portion from the connecting piece and cutting the connecting piece from the winding portion, and the winding of the core member. And a step of bending so as to be wound by the turning portion.

  According to the connection terminal for insertion and the manufacturing method thereof according to the present invention, the core member obtained from the same conductive metal plate is surrounded by the winding part during the assembly process, thereby effectively using the material and strength. Can be easily produced.

It is a top view of the connecting terminal for insertion. It is a side view in the state where a part of connection terminal for insertion was notched. It is an expanded plan view of the punched conductive metal plate. It is explanatory drawing of the assembly process of an insertion part.

The present invention will be described in detail based on the embodiments shown in the drawings.
FIG. 1 is a plan view of an insertion connection terminal, and FIG. 2 is a side view with a part cut away. The insertion connection terminal is formed by punching and bending one conductive metal plate. Yes. Schematically, it consists of a rod-shaped insertion part 11 located in the front, a lance locking part 12, and a wire crimping part 13 located in the rear.

  FIG. 3 is a developed plan view of a state in which a material made of a conductive metal plate having a thickness of 0.3 mm, for example, for molding the insertion connection terminal is punched. In FIG. 3, two insertion connection terminals are shown. They are shown side by side. In addition, the dashed-dotted line in FIG. 3 represents the inner broken line.

  The site | part which comprises the insertion part 11 is connected from the winding part 11a via the connection piece 11b from the winding part 11a, and the strip-shaped core-material part 11c arrange | positioned in parallel with the winding part 11a. It is made up.

  1 and 2, the winding portion 11a has an upper surface portion 11d serving as an upper surface of the insertion portion 11, a lower surface portion 11e serving as a lower surface, and two side surface portions 11f and 11g serving as side surfaces, and both sides of the lower surface portion 11e. The side surface portions 11f and 11g are connected to each other, and the upper surface portion 11d is connected to the side surface portion 11f.

  The tips of the upper surface portion 11d and the lower surface portion 11e are triangular projections 11h and 11i, and one end of the connecting piece 11b is connected to the tip of the projection 11i of the lower surface portion 11e. Moreover, the hole 11j is provided in the lance latching | locking part 12 side of the lower surface part 11e.

  On the other hand, the core part 11c is wound by the winding part 11a by bending the winding part 11a along the inner folding line, and is a portion located on the tip of the core part 11c, that is, the lance locking part 12 side. The wide portion 11k is formed with a protruding piece 11l having a height approximately equal to the thickness of the conductive metal plate. The core part 11c and the connecting piece 11b are punched in the remaining part of the main part of the connecting terminal for insertion.

  In addition, the lance locking portion 12 has a bottom surface portion 12a serving as a bottom portion of the lance locking portion 12, two side surface portions 12b and 12c serving as side surfaces, and a top surface portion serving as an upper surface that is connected to the side surface portions 12b and 12c. 12d and 12e are provided, and lance locking pieces 12f and 12g are formed on the wire crimping portion 13 side of the top surface portions 12d and 12e. The wire crimping portion 13 is provided with a core wire crimping portion 13a and a covering crimping portion 13b.

  In addition, when the connecting terminal for insertion is punched from the conductive metal plate and bent, the connecting terminal for insertion is attached by the connecting plate 14, and the connecting plate 14 is applied to the forming machine in each process. Pilot holes 15 are provided.

  In order to assemble from the conductive metal plate to the connection terminal for insertion shown in FIGS. 1 and 2, it is automatically assembled by punching and bending using a forming machine. In other words, the metal plate is first punched out by a forming machine as shown in FIG. 3 and is bent stepwise into a predetermined shape while being conveyed using the connecting plate 14 and the pilot hole 15.

  In this process, in the central portion of the insertion portion 11, as shown in FIG. 4A, the connecting piece 11b is bent and the core portion 11c is arranged on the lower surface portion 11e of the winding portion 11a. As shown in FIG. 7B, the core 11c is positioned by fitting the protrusion 11l with the hole 11j of the lower surface portion 11e so that the positional deviation with respect to the winding portion 11a does not occur. . At the same time, the core part 11c is cut from the connecting piece 11b at the A part, and the connecting piece 11b is cut from the protruding part 11i at the B part.

  Next, when the side surface portions 11f and 11g are raised and the core portion 11c is further wound by the upper surface portion 11d, the insertion portion 11 is shown in FIG. 4 (c) at the center portion and shown in FIG. 4 (d) at the projecting piece 11l. It becomes such a cross-sectional shape. Furthermore, the tips of the upper and lower protrusions 11h and 11i are butted to make the tips sharp. Moreover, the insertion part 11 can perform caulking from the circumference | surroundings as needed, and can make the winding by the winding part 11a with respect to the core material part 11c firm.

  The lance locking portion 12 is assembled in a box shape by the bottom surface portion 12a, the side surface portions 12b and 12c, and the top surface portions 12d and 12e, and the lance locking pieces 12f and 12g are bent inward and downward at the rear portion of the lance locking portion 12. The housing lance can be locked.

  In the wire crimping part 13, the core crimping part 13a and the covering crimping part 13b are raised in a U-shaped cross section.

  When the insertion connection terminal as shown in FIGS. 1 and 2 is completed through such steps, the insertion connection terminal is cut from the connecting plate 14.

  The connection terminal for insertion is prevented from coming out of the housing by connecting the electric wire to the electric wire crimping portion 13 and then accommodating the electric wire in the housing and locking the lance to the lance locking pieces 12f and 12g.

  In particular, since the core part 11c of the insertion part 11 is punched from a part of the same conductive metal plate as described above and is wrapped by the winding part 11a during the bending process, the manufacturing process is easy, and the insertion part The strength of the cable increases, and it becomes difficult to bend when inserted into the receiving connection terminal.

  Further, since the core portion 11c is punched in the remaining portion of the punched portion that is the main part of the insertion connection terminal, there is no waste of material, and there is no need to prepare another member as described in the conventional example.

  Furthermore, in order to eliminate waste of material, the connecting piece 11b is not connected to the tip of the winding part 11a, but the core part 11c is arranged from the lateral direction of the winding part 11a via the connecting piece 11b. You can also.

  Furthermore, the core part 11c can also be made into shapes other than an Example. For example, if the width of the core part 11c is further increased and the size of the winding part 11a is adapted to this, the insertion part 11 is rectangular but the height is increased and the strength is also increased. Moreover, if the core material part 11c is folded in half and the cross-sectional area is enlarged, the diameter of the insertion part 11 can also be enlarged. Furthermore, the length of the core part 11c can be increased, and the lance locking pieces 12f and 12g can be supported and reinforced from the inside.

DESCRIPTION OF SYMBOLS 11 Insertion part 11a Winding part 11b Connection piece 11c Core material part 11d Upper surface part 11e Lower surface part 11f, 11g Side surface part 11j Hole part 11l Projection piece 12 Lance latching part 13 Electric wire crimping part

Claims (8)

  It is manufactured by punching and bending one conductive metal plate comprising a strip-shaped core material part and a winding part in which the core material part is connected via a connecting piece, and a rod-shaped insertion part is provided in front. A connecting terminal for insertion having a wire crimping portion at the rear, wherein the insertion portion is located at the center portion of the separated core material portion, and the core material portion is wound by the winding portion. A connection terminal for insertion characterized by this.   Protruding pieces having a height equivalent to the thickness of the conductive metal plate are provided on a part of the core material part, and the core material part is positioned by fitting into a hole provided in the winding part. The connection terminal for insertion according to claim 1.   The connecting terminal for insertion according to claim 1 or 2, wherein the winding portion includes an upper plate, a lower plate, and two side plates.   A method of manufacturing a connection terminal for insertion, in which a conductive metal plate is punched and bent, a rod-shaped insertion portion is provided at the front, and a wire crimping portion is provided at the rear, and a peripheral portion of the insertion portion Forming a winding part and a strip-shaped core member connected from the winding part via a connecting piece by punching, and positioning the core member in the center of the winding part Cutting the core part from the connecting piece and cutting the connecting piece from the winding part, and bending the core member so as to be wound by the winding part. A manufacturing method of a connecting terminal for insertion.   Protruding pieces having a height equal to the thickness of the conductive metal plate are provided in a part of the core member, and a hole is provided in a part of the winding part, and the core member is formed in the center part of the winding part. The manufacturing method of the connecting terminal for insertion according to claim 4, wherein in the step of positioning, the protruding piece is fitted into the hole.   6. The method for manufacturing a connection terminal for insertion according to claim 4, wherein the core part is connected in parallel with the winding part from the winding part via the connecting piece.   The method for manufacturing a connection terminal for insertion according to any one of claims 4 to 6, further comprising a step of caulking the insertion portion from the periphery after the step of bending.   The manufacturing method of the connecting terminal for insertion according to any one of claims 4 to 7, wherein the winding part is composed of an upper surface plate, a lower surface plate, and two side plates.

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