JP2005135698A - Press-fit terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a press-fit terminal capable of preventing a board insertion portion from coming off.
SOLUTION: A plurality of substrate insertion portions 5b and 5c branched at the tip of a terminal base portion 5a are juxtaposed with press-fit terminals 5A to 5D inserted into a conductive through hole 6a of the substrate 6 in a press-fitted state. A slit 5h extending from the front end of the terminal base portion 5a to the rear end is formed in the terminal base portion 5a between the adjacent board insertion portions 5b and 5c.
[Selection] Figure 1

Description

  The present invention relates to a press-fit terminal that can prevent a substrate insertion portion from coming off.

  Conventionally, there is a press-fit terminal that is inserted into a conductive through hole of a substrate in a press-fit state (see, for example, Patent Document 1).

  In addition, there is a power connection terminal for a large current in which a plurality of board insertion portions branched at the tip of a wide terminal base are arranged in parallel (for example, see Patent Document 2).

  By the way, as shown in FIG. 5A, a press-fit terminal 1 for large current in which a plurality of substrate insertion portions 1b and 1c branched at the tip of a wide terminal base 1a are arranged in parallel has also been proposed. .

As shown in FIG. 5B, the press-fit terminal 1 has jig pressing shoulders 1d and 1e formed at the outermost position of the terminal base 1a, and the shoulders 1d and 1e are connected to the jig. Are simultaneously pressed (see arrow a), so that the board insertion portions 1b and 1c are simultaneously inserted into the conductive through holes 2a of the board 2 in a press-fitted state.
JP 2003-68419 A JP-A-5-326065

  However, since the board insertion portions 1b and 1c of the press-fit terminal 1 have a short protruding amount T1 from the distal end of the wide terminal base 1a, the board insertion portions 1b and 1c are hardly bent. When the positions of the conductive through holes 2a with respect to the portions 1b and 1c are shifted due to a processing error or the like, a situation may occur in which the board insertion portions 1b and 1c are inserted into the through holes 2a while being forcibly bent. Become.

  When such a press-fit terminal 1 is held by a connector housing 3 and installed in an engine room of an automobile, it is affected by repeated expansion and contraction due to temperature changes such as ambient temperature and energized state, and engine vibration. For example, the board insertion portions 1b and 1c and the through hole 2a are likely to be worn, and in the worst case, the substrate insertion portions 1b and 1c are likely to come out of the through hole 2a due to the reaction force.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a press-fit terminal that can prevent the substrate insertion portion from coming off.

In order to solve the above problems, the present invention is a press-fit terminal that is inserted into a conductive through hole of a substrate in a press-fit state,
In the press-fit terminal, a plurality of board insertion portions branched at the tip of the terminal base are arranged in parallel, and the terminal base between adjacent board insertion portions extends from the tip of the terminal base toward the rear end. The present invention provides a press-fit terminal in which an extending slit is formed.

  According to a second aspect of the present invention, the slit is preferably formed up to the middle of the rear end direction of the terminal base.

  Preferably, the slit is formed up to the front of the holding portion of the connector housing that holds the terminal base portion.

  As in claim 4, a jig pressing shoulder is formed at the outermost position of each terminal base, and a jig pressing shoulder is formed at an inner position where the slit of each terminal base is located. It is preferable to adopt a configuration as described above.

  According to the present invention, since the slit is formed in the terminal base portion between the adjacent substrate insertion portions of the press-fit terminal, even if the terminal base portion is wide, the substrate insertion portion protrudes from the terminal base portion due to the presence of the slit. Since the amount becomes substantially long, the bending of the board insertion portion becomes large.

  Therefore, when the position of each conductive through hole with respect to each board insertion part is shifted due to a processing error, etc., the board insertion part will be easily inserted into the through hole while flexing reasonably. Even if there is repeated expansion and contraction due to temperature changes such as energized state and the influence of vibration, the board insertion part and the through hole become hard to wear, and the worst case that the board insertion part comes out of the through hole by the reaction force It will be possible to reliably prevent this situation. Further, since only the slit is formed in the terminal base, the structure is simple and the cost is not increased.

  Further, the slit is formed either in the middle of the terminal base in the rear end direction (Claim 2) or in the structure formed in front of the holding portion of the connector housing that holds the terminal base (Claim 3). However, it is preferable that the longer the slit is, the greater the bending of the substrate insertion portion.

  Furthermore, a jig pressing shoulder is formed at the outermost position of each terminal base, and a jig pressing shoulder is formed at an inner position where the slit of each terminal base is located (Claim 4). Each board insertion portion can be smoothly inserted straight into the through hole without being bent and tilted by the slit when the tool is pressed.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a press-fit terminal 5A for a large current according to the first embodiment, and a wide terminal base 5a bent in an inverted L shape has a plurality of branches (at the tip of the terminal base 5a ( In this example, two board insertion portions 5b and 5c are provided side by side. The terminal base 5a is not limited to an inverted L shape, and may be a straight shape or other shapes. The board insertion portions 5b and 5c are not limited to two, and may be three or more. good.

  The plurality of press-fit terminals 5 </ b> A have the base portions of the terminal base portions 5 a held by the holding portions 7 a of the connector housing 7. The number of press-fit terminals 5A is four in this example, but may be less or more than that.

  The substrate 6 is formed with conductive through holes 6a for inserting the substrate insertion portions 5b and 5c of the press-fit terminal 5A in a press-fitted state.

  This press-fit terminal 5A has jig pressing shoulders 5d, 5e formed at the outermost position of the terminal base 5a, and the shoulders 5d, 5e are simultaneously pressed with a jig (see arrow a). ), And the board insertion portions 5b and 5c are inserted into the conductive through holes 6a of the board 6 simultaneously in a press-fitted state.

  The configuration of the press-fit terminal 5A so far is the same as the press-fit terminal 1 of the prior art in FIG.

  And in the press fit terminal 5A of 1st Embodiment, the slit 5h extended in the back end direction from the front-end | tip of this terminal base part 5a is formed in the terminal base part 5a between adjacent board | substrate insertion parts 5b and 5c, The slit 5h is cut at a depth T2 that is substantially equal to the protruding amount T1 of the board insertion portions 5b and 5c from the front end of the terminal base 5a, specifically in the middle of the terminal base 5a. Yes. The cut depth T2 may be equal to or less than the protrusion amount T1. Further, the width W1 of the slit 5h may be 0.1 mm or more.

  According to the press-fit terminal 5A of the first embodiment, since the slit 5h is formed in the terminal base 5a between the adjacent board insertion portions 5b and 5c of the press-fit terminal 5A, even if the terminal base 5a is wide, In the board insertion portions 5b and 5c, the protrusion amount T1 + T2 from the terminal base portion 5a is substantially increased due to the presence of the slit 5h, so that the deflection of the board insertion portions 5b and 5c is increased.

  As a result, when the positions of the conductive through holes 6a with respect to the substrate insertion portions 5b and 5c are shifted due to processing errors, the substrate insertion portions 5b and 5c are inserted into the through holes 6a while flexing without difficulty. Therefore, even if the expansion and contraction due to temperature changes such as the ambient temperature and the energized state and the influence of vibration are caused, the board insertion portions 5b and 5c and the through hole 6a are not easily worn, The worst situation in which the insertion portions 5b and 5c come out of the through hole 6a by the reaction force can be reliably prevented. Further, since only the slit 5h is formed in the terminal base 5a, the structure is simple and the cost is not increased.

  FIG. 2 shows a press-fit terminal 5B of the second embodiment, which is different from the press-fit terminal 5A of the first embodiment in that the slit 5h is formed of the holding portion 7a of the connector housing 7 that holds the terminal base portion 5a. This is the point formed to the front.

  In this configuration, since the slits 5h are long, the board insertion portions 5b and 5c are flexibly bent. Therefore, the board insertion portions 5b and 5c are more easily bent and are inserted into the through hole 6a. .

  FIG. 3 shows a press-fit terminal 5C of the third embodiment, which is different from the press-fit terminal 5B of the second embodiment in that a jig pressing shoulder formed at the outermost position of the terminal base 5a. In addition to 5d and 5e, a slit 5h is formed in a wide width W2 (W1 <W2), and jig pressing shoulders 5f and 5g are formed at the inner position where the slit 5h of the terminal base 5a is located. is there.

  With this configuration, the substrate insertion portions 5b and 5c can be smoothly inserted straight into the through hole 6a without being bent and inclined by the slit 5h when the jig is pressed.

  FIG. 4 shows a press-fit terminal 5D of the fourth embodiment, which is different from the press-fit terminal 5C of the third embodiment in that the slit 5h is formed to have a wider width W3 (W2 <W3).

  If it is this structure, insertion of the jig | tool with respect to the slit 5h becomes easy, and a press workability | operativity comes to improve.

It is a press fit terminal of a 1st embodiment, (a) is a perspective view and (b) is a front view. It is a press fit terminal of 2nd Embodiment, (a) is a perspective view, (b) is a front view. It is a press fit terminal of 3rd Embodiment, (a) is a perspective view, (b) is a front view. It is a press fit terminal of 4th Embodiment, (a) is a perspective view, (b) is a front view. It is the conventional press fit terminal, (a) is a perspective view, (b) is a front view.

Explanation of symbols

5A to 5D Press-fit terminals 5a Terminal bases 5b and 5c Substrate insertion parts 5d to 5g Shoulder part 5h Slit 6 Substrate 6a Through hole 7 Connector housing 7a Holding part

Claims (4)

A press-fit terminal inserted in a press-fit state into a conductive through hole of a substrate,
In the press-fit terminal, a plurality of board insertion portions branched at the tip of the terminal base are arranged in parallel, and the terminal base between adjacent board insertion portions extends from the tip of the terminal base toward the rear end. A press-fit terminal in which an extending slit is formed.   The press-fit terminal according to claim 1, wherein the slit is formed partway along a rear end direction of the terminal base.   The press-fit terminal according to claim 1, wherein the slit is formed up to the front of the holding portion of the connector housing that holds the terminal base.   A jig pressing shoulder is formed at the outermost position of each terminal base, and a jig pressing shoulder is formed at an inner position where a slit of each terminal base is located. 4. The press-fit terminal according to any one of 3 above.

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