JP2009283363A - Terminal continued body and terminal manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal continued body in which a terminal with different shape at both end parts can be manufactured without having a burr or the like generated almost at all, and to provide a method of manufacturing a terminal. <P>SOLUTION: In the method of manufacturing the terminal, a first and a second recessed portions 2A, 2B with different lengths L1, L2 in longitudinal direction are formed alternately at a plurality of cutting planned positions in longitudinal direction of a bar shape material, and by twisting relatively the both ends of the first and the second recessed portions 2A, 2B, the bar shape material is cut at the cutting planned positions to form the terminal. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a terminal continuum and a terminal manufacturing method.

  2. Description of the Related Art Conventionally, as a method for manufacturing a terminal used in an automobile electrical system connector or the like, a terminal manufacturing method is known in which a chained terminal material is cut from a tip by a certain length and this cut piece is used as a terminal (for example, , See Patent Document 1).

In this terminal manufacturing method, joint concave portions are respectively formed at a plurality of planned cutting positions in the longitudinal direction of the rod-shaped material to produce a chain-shaped terminal material. Hold the proximal end side of the joint recess positioned with a fixed rotor, hold the distal end side of the joint recess with a rotating rotor, rotate the rotating rotor and twist the chain-shaped terminal material to terminal the cutting piece on the distal end side It is what.
JP 2008-34325 A

  However, in the case of a terminal having an irregular shape at both ends, if the terminal is produced by a conventional terminal manufacturing method using the terminal having an irregular shape at both ends as a continuum, the force is dispersed due to stress imbalance when divided by twisting. As a result, burrs are likely to occur, which may cause an electrical short circuit or poor connection.

  An object of the present invention is to provide a terminal continuum and a terminal manufacturing method capable of manufacturing a terminal having both ends with irregular shapes with almost no occurrence of burrs or the like.

  In order to achieve the above object, one aspect of the present invention provides the following terminal continuum and terminal manufacturing method.

[1] A terminal continuum in which first and second recesses having different lengths in the longitudinal direction are alternately formed at a plurality of planned cutting positions in the longitudinal direction of the rod-shaped material.

[2] The terminal continuum according to [1], wherein each of the first and second recesses has a symmetrical shape with the planned cutting position as a center.

[3] A step of alternately forming first and second recesses having different lengths in the longitudinal direction at a plurality of scheduled cutting positions in the longitudinal direction of the rod-shaped material; and The terminal manufacturing method characterized by including the process of cut | disconnecting the said rod-shaped raw material in the said cutting scheduled position by twisting both sides relatively.

[4] The step of alternately forming the first and second recesses forms the first and second recesses so as to have a symmetrical shape with the planned cutting position as a center. The terminal manufacturing method according to [3] above.

  According to the present invention, it is possible to manufacture a terminal having both end portions with almost no burrs.

  1 to 3 are diagrams showing an example of a terminal manufacturing process according to an embodiment of the present invention. Hereinafter, a method for manufacturing a terminal will be described with reference to the drawings.

(1) Production of terminal continuum FIG. 1A is a front view of a terminal continuum, FIG. 1B is a detailed view of part A of FIG. 1A, and FIG. 1C is FIG. FIG. 1 (d) is a cross-sectional view taken along the line CC of FIG. 1 (b), and FIG. 1 (e) is a cross-sectional view taken along the line DD of FIG. 1 (c). FIG.

First, first and second recesses 2A and 2B having different lengths L ₁ and L ₂ in the longitudinal direction are alternately arranged at a plurality of scheduled cutting positions in a longitudinal direction of a rod-shaped material made of a metal material such as a copper alloy. The terminal continuous body 1 shown in FIG. In this embodiment, a rod-shaped material having a regular square cross section is used, but a polygonal material such as a pentagon or a hexagon may be used, or a round cross section may be used.

  A terminal body 3 is formed between the first and second recesses 2A and 2B. As shown in FIG. 1B, the first recessed portion 2A is composed of a first tapered portion 20A that is symmetrical with respect to the narrow diameter portion 21, and the second recessed portion 2B is formed as shown in FIG. As shown in FIG. 4, the second tapered portion 20B is symmetric with respect to the narrow diameter portion 21. The tapered portions 20A and 20B have a quadrangular pyramid shape in the present embodiment, but are not limited to a quadrangular pyramid shape, and may be a conical shape or the like as long as the shape is bilaterally symmetric. Further, the depth of the first recess 2A and the depth of the second recess 2B are the same, but they may be different. The recesses 2A and 2B having such a shape can be formed by cold forging, for example.

(2) Production of terminal FIG. 2 (a) is a diagram showing a state in which the terminal continuous body shown in FIG. 1 is set in a cutting device, FIG. 2 (b) is a detailed view of a portion E in FIG. 2 (c) is a cross-sectional view taken along line FF in FIG. 2 (b).

  The cutting device 100 accommodates the reel unit 110 that feeds the terminal continuum 1 wound in a reel shape, the fixing unit 120 that holds the tip of the terminal continuum 1, the rotating unit 130, and the cut terminal 10. A storage unit 140.

  The fixing portion 120 has a regular square through hole 120 a having one side slightly longer than one side of the terminal body 3.

  The rotating part 130 has a regular rectangular through hole 130a whose one side is slightly longer than one side of the terminal body 3, and is configured to rotate by a predetermined angle by a motor (not shown).

  The terminal continuous body 1 shown in FIG. 1 is wound and set in a reel shape on the reel unit 110 of the cutting apparatus 100 configured as described above. The tip of the terminal continuum 1 is inserted through the through holes 120a and 130a of the fixed part 120 and the rotating part 130, as shown in FIG.

  When the rotating unit 130 is rotated by a predetermined angle (for example, 180 degrees) by a motor, twisting occurs in the first recessed portion 2A, and the distal end side is cut from the fixed side by shearing and falls into the accommodating unit 140.

  Subsequently, the terminal continuum 1 is sent out from the reel portion 110, and the tip of the terminal continuum 1 is inserted through the through holes 120a and 130a of the fixing portion 120 and the rotating portion 130 in the same manner as described above, and the rotating portion 130 is rotated. Then, the distal end side of the terminal continuous body 1 is cut and dropped into the accommodating portion 140. By repeating these operations, the terminal 10 is continuously manufactured.

  FIG. 3 is a front view of the terminal 10 formed by cutting the distal end side of the terminal continuous body 1. The terminal 10 includes a rod-shaped terminal body 3 having a square cross section, a first tapered portion 20A provided at one end of the terminal body 3, and a second tapered portion provided at the other end of the terminal body 3. It consists of a taber unit 20B.

  FIG. 4 is a diagram illustrating an application example of the terminal 10. The terminal 10 shown in FIG. 3 is bent at a right angle at the center, and the first tapered portion 20A side is incorporated into the connector case 12 to form a connector portion (male side connector) connected to the mating connector. The connector portion 12 is inserted into the hole 11a of the substrate 11 on the second tapered portion 20B side, and the connector case 12 is mounted on the substrate 11 by soldering. In addition, the terminal 10 can also be made into a straight shape without bending.

(Effect of embodiment)
According to the present embodiment, cutting is performed by twisting the symmetric recesses 2A and 2B. However, since the divided portion is formed in a symmetric shape, there is little imbalance such as stress, and the force is distributed. Therefore, there is almost no generation of burrs and the like, and terminals having irregular shapes at both ends can be manufactured. Thereby, even if the terminal manufactured by this Embodiment is used, generation | occurrence | production of an electrical short or a connection failure can be suppressed.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from or changing the gist of the present invention.

1 (a) is a front view of a terminal continuum, FIG. 1 (b) is a detailed view of part A of FIG. 1 (a), FIG. 1 (c) is a detailed view of part B of FIG. 1 (a), FIG.1 (d) is sectional drawing which follows the CC line of FIG.1 (b), FIG.1 (e) is sectional drawing which follows the DD line | wire of FIG.1 (c). 2A is a view showing a state where the terminal continuous body shown in FIG. 1 is set in a cutting device, FIG. 2B is a detailed view of an E portion of FIG. 2A, and FIG. It is sectional drawing which follows the FF line of FIG.2 (b). FIG. 3 is a front view of a terminal formed by cutting the distal end side of the terminal continuous body. FIG. 4 is a diagram illustrating an application example of a terminal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 terminal continuous body, 2A 1st recessed part, 2B 2nd recessed part, 3 terminal main body, 10 terminal, 11 board | substrate, 11a hole, 12 connector case, 20A 1st taper part, 20B 2nd taper part, 21 Small diameter part, 100 cutting device, 110 reel part, 120 fixing part, 120a through hole, 130 rotating part, 130a through hole, 140 accommodating part

Claims (4)

  A terminal continuum in which first and second recesses having different lengths in the longitudinal direction are alternately formed at a plurality of planned cutting positions in the longitudinal direction of the rod-shaped material.   2. The terminal continuum according to claim 1, wherein each of the first and second recesses has a symmetrical shape with the planned cutting position as a center. Alternately forming first and second recesses having different lengths in the longitudinal direction at a plurality of planned cutting positions in the longitudinal direction of the rod-shaped material;
Cutting the rod-shaped material at the planned cutting position by relatively twisting both sides of the first and second recesses.   The step of alternately forming the first and second recesses forms the first and second recesses so as to have a symmetrical shape with the planned cutting position as a center. 3. The terminal manufacturing method according to 3.

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