WO2023037945A1 - Press-fit terminal and substrate having press-fit terminal - Google Patents

Press-fit terminal and substrate having press-fit terminal Download PDF

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Publication number
WO2023037945A1
WO2023037945A1 PCT/JP2022/032806 JP2022032806W WO2023037945A1 WO 2023037945 A1 WO2023037945 A1 WO 2023037945A1 JP 2022032806 W JP2022032806 W JP 2022032806W WO 2023037945 A1 WO2023037945 A1 WO 2023037945A1
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WIPO (PCT)
Prior art keywords
press
fit
diameter
hole
fit terminal
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PCT/JP2022/032806
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French (fr)
Japanese (ja)
Inventor
瑞歩 川島
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
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Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2023037945A1 publication Critical patent/WO2023037945A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes

Definitions

  • the present disclosure relates to press-fit terminals and substrates with press-fit terminals.
  • Patent Document 1 discloses that a fixing portion inserted into a through hole in a press-fit terminal has a pair of elastically deformable legs made of a double-supported beam structure that elastically deforms, and a tapered portion at the outer edge of the pair of elastically deformable legs. can be constituted by a plurality of straight lines.
  • press-fit terminals it is required to secure a certain or more contact load to the through-holes formed in the substrate.
  • connection reliability can be obtained against the effects of temperature and vibration in an in-vehicle environment.
  • a contact load of a certain level or more is secured for the through-hole, a holding force required for pulling out the terminal from the board becomes a certain level or more, and the terminal is prevented from being detached from the board due to vibration or the like.
  • press-fit terminals that can accommodate through-holes of different diameters.
  • the shape of the press-fit terminal is designed for a large diameter through hole, the insertion force and contact load may become too large for a small diameter through hole.
  • the shape of the press-fit terminal is designed according to the small diameter through hole, the contact load may become too small for the large diameter through hole.
  • an object of the present disclosure is to provide a press-fit terminal adaptable to a first diameter through hole and a second diameter through hole smaller than the first diameter.
  • a press-fit terminal of the present disclosure includes a tip portion and a press-fit portion continuous with the tip portion, the press-fit portion including two contact pieces facing each other across an eyehole, and
  • the outer edge includes two parallel edges arranged in a parallel posture and two slanted edges outwardly slanted from the tip toward the parallel edges, the slanted edges comprising a first slanted portion and the first and a second inclined portion located closer to the parallel edge than the inclined portion, the second inclined portion being inclined with respect to the parallel edge more than the first inclined portion.
  • a press-fit terminal adaptable to through-holes of a first diameter and through-holes of a second diameter smaller than the first diameter.
  • FIG. 1 is a front view showing a press-fit terminal according to an embodiment
  • FIG. FIG. 2 is an explanatory view showing a state in which press-fit terminals are inserted into through holes.
  • FIG. 3 is an enlarged view showing the inclined portion.
  • FIG. 4 is a diagram showing a substrate with press-fit terminals in which press-fit terminals are press-fitted into the substrate.
  • FIG. 5 is an enlarged view showing a press-fit terminal according to Example 1.
  • FIG. FIG. 6 is a diagram showing evaluation results of press-fit terminals.
  • FIG. 7 is a diagram showing evaluation results of press-fit terminals.
  • the press-fit terminal of the present disclosure is as follows.
  • the first inclined portion having a small inclination angle comes into contact with the inner peripheral surface of the through hole of the second diameter at the initial stage of insertion.
  • the second inclined portion which has a large inclined portion, contacts the inner peripheral surface of the through-hole of the first diameter at least in the latter stage of insertion, It is possible to prevent the contact load from becoming too small. This allows the press-fit terminal to accommodate a first diameter through-hole and a second diameter through-hole that is smaller than the first diameter.
  • the point of change from the first inclined portion to the second inclined portion is the longitudinal direction of the press-fit portion, and both outer edges of the press-fit portion are the It may be located between a position that is as wide as the first diameter and a position that is as wide as the second diameter.
  • the first inclined portion is brought into contact with the inner peripheral surface of the through hole of the second diameter, and the through hole of the second diameter is inserted. It is possible to reduce the insertion force and obtain an appropriate contact load that does not become excessive. Also, when inserting the press-fit terminal into the through-hole of the first diameter, it is possible to prevent the contact load from becoming too small by bringing the second inclined portion into contact with the inner peripheral surface of the through-hole of the second diameter. can be suppressed.
  • both outer edges of the press-fit portion have the same width as the first diameter, and the change L1 is the distance from the point, and L2 is the distance between the position where both outer edges of the press-fit portion have the same width as the second diameter and the point of change, so that L1/L2 ⁇ 0.6.
  • the press-fit terminal of any one of (1) to (4) is adaptable to both a first diameter through hole and a second diameter through hole smaller than the first diameter.
  • the substrate with press-fit terminals of the present disclosure is as follows.
  • a substrate with press-fit terminals comprising: a substrate having a through-hole formed thereon; be.
  • FIG. 1 is a front view showing a press-fit terminal 20.
  • FIG. FIG. 1 shows cross sections of substrates 12A and 12B formed with through holes 13A and 13B into which press-fit terminals 20 are inserted.
  • FIG. 2 is an explanatory diagram showing a state in which the press-fit terminal 20 is inserted into the through hole 13A.
  • the press-fit terminals 20 are terminals press-fitted into through holes 13A and 13B formed in the substrates 12A and 12B.
  • the substrates 12A and 12B are formed of insulating plates such as glass epoxy plates.
  • Through-holes 13A and 13B are formed through the substrates 12A and 12B, respectively.
  • the through holes 13A and 13B are circular holes, for example.
  • a conductive layer 13f made of a metal such as copper is formed on the inner surfaces of the through holes 13A and 13B. While the press-fit terminal 20 is press-fitted into the through holes 13A and 13B, the press-fit terminal 20 contacts the conductive layer 13f and is electrically connected to the conductive layer 13f.
  • the conductive layer 13f may be connected to circuits formed on the surfaces of the substrates 12A and 12B.
  • the through holes 13A formed in the substrate 12A and the through holes 13B formed in the substrate 12B have different diameters (for example, circular holes).
  • the diameter of the through hole 13A is a first diameter ⁇ 1
  • the diameter of the through hole 13B is a second diameter ⁇ 2 smaller than the first diameter ⁇ 1.
  • the press-fit terminal 20 can maintain electrical connection with the conductive layer 13f regardless of whether the press-fit terminal 20 is press-fitted into the through-hole 13A or the through-hole 13B.
  • the through hole 13A with the first diameter ⁇ 1 and the through hole 13B with the second diameter ⁇ 2 may be formed at different positions on the same substrate. In this case, for example, the insertion portions of the press-fit terminals 20 having the same shape before press-fitting are inserted into both the through-holes 13A and 13B formed in the same substrate.
  • the press-fit terminal 20 is made of metal such as copper or copper alloy.
  • the press-fit terminal 20 may be formed by pressing a metal plate, for example.
  • the surface of the press-fit terminal 20 may be plated with tin, a tin alloy, or the like.
  • the press-fit terminal 20 includes a tip portion 22 and a press-fit portion 30 that continues from the tip portion 22 .
  • one end of the press-fit portion 30 is connected to the distal end portion 22
  • the other end of the press-fit portion 30 is connected to the proximal end portion 26 .
  • the tip portion 22 is a portion that is first inserted into the through holes 13A and 13B when the press-fit terminal 20 is inserted into the through holes 13A and 13B.
  • the base end portion 26 is a portion where portions to be electrically connected to the conductive layer 13f on the side of the through holes 13A and 13B are connected. In the example shown in FIG. 4 which will be described later, the base end portion 26 continues to the connector terminal portion 64 .
  • the thickness of the press-fit terminal 20 is, for example, 0.20 mm or more and 0.80 mm or less.
  • the direction in which the press-fit portion 30 is inserted may be referred to as the front end or front, and the direction opposite to the direction of insertion may be referred to as the base end or rear.
  • the press-fit portion 30 is a portion provided between the distal end portion 22 and the proximal end portion 26 .
  • a width W ⁇ b>2 (here, the maximum width) of the press-fit portion 30 is greater than the width W ⁇ b>1 of the distal end portion 22 .
  • the width W2 of the press-fit portion 30 is greater than the width W3 of the proximal portion 26.
  • the width W1 of the tip portion 22 is smaller than both the first diameter ⁇ 1 and the second diameter ⁇ 2. Therefore, the tip portion 22 can pass through the through holes 13A and 13B without being pressed against the inner peripheral surfaces of the through holes 13A and 13B.
  • the width W2 of the press-fit portion 30 is larger than both the first diameter ⁇ 1 and the second diameter ⁇ 2.
  • the press-fit portion 30 can come into contact with the inner peripheral surfaces of the through holes 13A and 13B while being pressed.
  • the press-fit portion 30 may be grasped as a portion for obtaining electrical connection to the conductive layer 13f by maintaining contact with the inner peripheral surfaces of the through holes 13A and 13B.
  • the press-fit terminal 20 includes an elongated plate-like portion extending linearly as a whole.
  • a distal end portion 22, a press fit portion 30 and a proximal end portion 26 are sequentially formed on the elongated plate-like portion from the distal end side toward the proximal end side.
  • the tip portion 22 includes a rectangular plate-shaped portion and a tapered portion.
  • the rectangular portion is a portion extending from the press-fit portion 30 toward the distal end side, and is a portion where portions of the same width are continuous.
  • the tapered portion is a portion that extends from the rectangular portion toward the distal end, and has a shape that gradually narrows toward the distal end. The presence of the tapered portion facilitates insertion of the press-fit terminal 20 into the through holes 13A, 13B.
  • the tip portion 22 can be inserted into the through-holes 13A, 13B with a gap from the inner peripheral surfaces of the through-holes 13A, 13B.
  • the base end portion 26 includes a rectangular plate-like portion with continuous portions of the same width. The edges on both sides of this rectangular plate-like portion are parallel to each other.
  • the base end portion does not have to be rectangular plate-shaped.
  • the proximal portion may have a shape that tapers or widens toward the press-fit portion.
  • the proximal end may have a portion greater than the width of the press-fit portion.
  • the press-fit portion 30 is provided between the distal end portion 22 and the proximal end portion 26 .
  • the press-fit portion 30 includes two contact pieces 34 facing each other across an eye hole 31 .
  • the eyehole 31 is an elongated hole extending in a direction connecting the distal end portion 22 and the proximal end portion 26 .
  • Specific examples of the shape of the eyehole 31 include a perfect circle, an oval shape, a square shape, a rectangular shape, and the like.
  • the eyehole 31 is preferably elongated in the direction in which the press-fit terminal is inserted.
  • the eyehole 31 has an elongated shape surrounded by a pair of inner peripheral edges parallel to each other and a pair of semicircular arc-shaped edges connected to both ends of the pair of inner peripheral edges.
  • One ends of the two contact pieces 34 are connected to the tip portion 22 .
  • the other ends of the two contact pieces 34 are connected to the base end 26 .
  • Both outer edges of the press-fit portion 30 include a parallel edge 35 and an inclined edge 36 located on the distal side with respect to the parallel edge 35 .
  • the lateral edges of the press-fit portion 30 further include beveled edges 37 located proximal to the parallel edges 35 .
  • Both outer edges of the press-fit portion 30 are the outer edges of the two contact pieces 34 on the side opposite to the eyehole 31 .
  • the parallel edges 35 are arranged parallel to each other along the longitudinal direction of the press-fit portion 30 .
  • the parallel edges 35 run along the longitudinal direction of the eyehole 31 .
  • the parallel edge 35 may be positioned within the existence range of a pair of mutually parallel inner peripheral edges of the eyehole 31 .
  • the inclined edge 36 on the tip side is formed so as to incline outward from the tip portion 22 toward the parallel edge 35 . Therefore, the portion of the press-fit portion 30 where the inclined edge 36 is formed gradually widens from the distal end portion 22 toward the proximal end side.
  • the tip-side inclined edge 36 may be formed in a range including a range where the tip-side semi-arcuate edge of the eyehole 31 exists.
  • the inclined edge 37 on the base end side is formed so as to be inclined outward from the base end portion 26 toward the parallel edge 35 . Therefore, the portion of the press-fit portion 30 where the inclined edge 36 is formed gradually widens from the base end portion 26 toward the base end side.
  • the proximal-side inclined edge may be formed in a range including the range where the proximal-side semi-circular edge of the eyehole 31 exists.
  • the inclined edge 36 on the tip side includes a first inclined portion 36a and a second inclined portion 36b positioned closer to the parallel edge 35 than the first inclined portion 36a.
  • the second inclined portion 36b is inclined with respect to the parallel edge 35 more than the second inclined portion 36b. That is, the parallel edge 35 extends along the longitudinal direction of the press-fit portion 30, the inclination angle of the first inclined portion 36a with respect to the longitudinal direction of the press-fit portion 30 is ⁇ 1, and the second inclined portion 36b with respect to the longitudinal direction of the press-fit portion 30 is ⁇ 1. is the inclination angle ⁇ 2. Then, ⁇ 1 ⁇ 2.
  • the side edge of the distal end portion 22 and the first inclined portion 36a, the first inclined portion 36a and the second inclined portion 36b, and the second inclined portion 36b and the parallel edge 35 may form an angle and continue to form an angle. They may be connected via a curve.
  • the change point P is a position A1 where both outer edges of the press-fit portion 30 have the same width as the first diameter ⁇ 1, and a position A1 where both outer edges of the press-fit portion 30 have the same width as the first diameter ⁇ 1. It may be positioned between position A2 and position A2 that has the same width as ⁇ 2.
  • the press-fit portion 30 is inserted into the through-hole 13A having the first diameter ⁇ 1
  • the two first inclined portions 36a of the press-fit portion 30 are first pressed against the inner peripheral surface of the through-hole 13A.
  • the two second inclined portions 36b of the press-fit portion 30 are first pressed against the inner peripheral surface of the through-hole 13A.
  • the two contact pieces 34 are deformed inward by the inner peripheral surface of the through-hole 13A, and at least two parallel edges 35 of the press-fit portion 30 are aligned with the through-hole 13A. It will be in a state of being pressed against the inner peripheral surface of the A portion of the second inclined portion 36b of the inclined edge 36 near the parallel edge 35 is pressed against the inner peripheral surface of the through hole 13A, but the first inclined portion 36a is separated from the inner peripheral surface of the through hole 13A. It is assumed that In this case, it is assumed that the change point P is not pressed against the inner peripheral surface of the through hole 13A and is observed at a position away from the inner peripheral surface.
  • the press-fit terminal 20 when the press-fit terminal 20 is inserted into the through hole 13B having the smaller second diameter ⁇ 2, the first inclined portion 36a having the smaller inclination angle ⁇ 1 first passes through. It contacts the inner peripheral surface of the hole 13B. Since the first inclined portion 36a having a small inclination angle ⁇ 1 is pressed against the inner peripheral surface of the through hole 13B from the initial stage of deformation, the contact piece 34 is smoothly deformed, and the insertion force and the contact load become excessive. It is possible to prevent the fitting portion 30 from being pressed against the inner peripheral surface of the through hole 13B with an excessive force. As a result, the press-fit portion 30 is pressed against the inner peripheral surface of the through hole 13B with an appropriate contact load without being excessively large.
  • the press-fit terminal 20 when the press-fit terminal 20 is inserted into the through-hole 13A having the larger first diameter ⁇ 1, the first diameter ⁇ 1 of the through-hole 13A is larger than the second diameter ⁇ 2 of the through-hole 13B. It is conceivable that the insertion force and contact load are lower than in the case.
  • the second inclined portion 36b having a large inclination angle ⁇ 2 with respect to the longitudinal direction of the press-fit portion 30 is pressed against the inner peripheral surface of the through hole 13A. Therefore, the second inclined portion 36b having a large inclination angle ⁇ 2 is mainly deformed, thereby generating a force to press the press-fit portion 30 against the inner peripheral surface of the through hole 13A. As a result, excessive reduction of the contact load is suppressed, and the press-fit portion 30 is pressed against the inner peripheral surface of the through hole 13A with an appropriate contact load that is not too small.
  • the press-fit portion 30 can be inserted, for example, into the through hole 13A having a first diameter ⁇ 1 and the through hole 13B having a second diameter ⁇ 2 smaller than the first diameter ⁇ 1 with an insertion force that is not too large. Moreover, it can be applied to both through holes 13A and 13B in the sense that it can be inserted and connected with an appropriate contact load that is neither too large nor too small.
  • the change point P from the first inclined portion 36a to the second inclined portion 36b is the position A1 in the longitudinal direction of the press-fit portion 30 where both outer edges of the press-fit portion 30 have the same width as the first diameter ⁇ 1. and a position A2 where the width is the same as the second diameter ⁇ 2. Therefore, when inserting the press-fit terminal 20 into the through-hole 13B having the second diameter ⁇ 2, the first inclined portion 36a is brought into contact with the inner peripheral surface of the through-hole 13B having the second diameter ⁇ 2, and the insertion force is increased. can be lowered, and an appropriate contact load that does not become excessive can be obtained.
  • the contact load is reduced by bringing the second inclined portion 36b into contact with the inner peripheral surface of the through hole 13A having the first diameter ⁇ 1. can be suppressed from becoming too small.
  • the change point P is preferably located in the following range between the positions A1 and A2 in the longitudinal direction of the press-fit portion 30.
  • FIG. 3 is an enlarged view showing the inclined edge 36.
  • FIG. 3 As shown in the figure, in the longitudinal direction of the press-fit portion 30, the distance between the point of change P and the position A1 where both side edges of the press-fit portion 30 have the same width as the first diameter ⁇ 1 is defined as L1. Also, in the longitudinal direction of the press-fit portion 30, the distance between the change point P and the position A2 where both side edges of the press-fit portion 30 have the same width as the second diameter ⁇ 2 is L2.
  • it may be set so that L1/L2 ⁇ 0.6. This prevents the change point P from being set too close to the position A1, and prevents the contact load from being too small when the press-fit terminal 20 is inserted into the through hole 13A having the first diameter ⁇ 1. Suppressed.
  • it may be set so that L1/L2 ⁇ 0.7, and more preferably, it may be set so that L1/L2 ⁇ 1.2.
  • the change point P is prevented from being set too close to the position A2, and the insertion force for inserting the press-fit terminal 20 into the through hole 13B having the second diameter ⁇ 2 is less likely to be excessive.
  • it may be set so that L1/L2 ⁇ 2, and more preferably, it may be set so that L1/L2 ⁇ 1.2.
  • FIG. 4 is a diagram showing a substrate 40 with press-fit terminals in which the press-fit terminals 20 are press-fitted into the substrate 112.
  • FIG. 4 is a diagram showing a substrate 40 with press-fit terminals in which the press-fit terminals 20 are press-fitted into the substrate 112.
  • the board 40 with press-fit terminals includes a board 112 and press-fit terminals 20 .
  • the press-fit terminal 20 is a connector terminal.
  • the connector 60 includes press-fit terminals 20 and a connector housing 62 .
  • a connector terminal portion 64 is integrally connected to the base end portion 26 of the press-fit terminal 20 .
  • the connector terminal portion 64 is connected to the base end portion 26 while being bent (in this case, being bent at right angles).
  • the connector terminal portion 64 may be linearly connected to the base end portion 26 .
  • the base end portion 26 and the connector terminal portion 64 of the press-fit terminal 20 are incorporated in the connector housing 62 of the connector 60 . Proximal end 26 may exit connector housing 62 .
  • the connector terminal portion 64 is arranged to protrude from the bottom of the space inside the connector housing 62 toward the opening.
  • the connector housing 62 supports a plurality of press-fit terminals 20 .
  • a plurality of connector terminal portions 64 are arranged at intervals in the connector housing 62 .
  • a plurality of press-fit portions 30 protrude from the outer surface of the connector housing 62 .
  • a plurality of press-fit portions 30 protruding from the outer surface of the connector housing 62 are press-fitted into the plurality of through-holes 113 at the same time.
  • a plurality of through holes 113 are formed in the substrate 112 .
  • the connector 60 is mounted and fixed to the substrate 112 while the plurality of press-fit portions 30 are press-fitted into the plurality of through holes 113 .
  • a substrate in which the connector 60 is mounted and fixed to the substrate 112 may be referred to as a connector-equipped substrate.
  • the plurality of through holes 113 formed in the substrate 112 may be either the through holes 13A, 13B, or the through holes 13A, 13B may be mixed. In either case, press-fit terminals 20 having the same shape can be press-fitted into each through-hole 113 .
  • Example 1 the press-fit terminal 20 described in the above embodiment is assumed, and the insertion force and contact load are evaluated with respect to the insertion stroke when the press-fit terminal 20 is inserted into the through holes 13A and 13B.
  • the evaluation was derived by three-dimensional CAE (Computer Aided Engineering) analysis using the finite element method.
  • a press-fit terminal 220 in which the inclined edge 36 of the press-fit terminal 20 described in the above embodiment is changed to an inclined edge 236 having a uniform inclination angle ⁇ 1 also shows the evaluation of the insertion force and contact load against the insertion stroke.
  • the inclination angle ⁇ 1 is smaller than the inclination angle ⁇ 2. positioned.
  • the first diameter ⁇ 1 was 0.65 mm, and the second diameter ⁇ 2 was 0.55 mm.
  • the evaluation results are shown in Figure 6.
  • the evaluation results are indicated by the ratio (%) to the maximum insertion force or maximum contact load of Example 1. From this evaluation result, it can be seen that the maximum insertion force and maximum contact load of Example 1 are clearly smaller than the maximum insertion force and maximum contact load of Example 1 when the second diameter is ⁇ 2. Further, in the case of the first diameter ⁇ 1, the maximum contact load in the case of Example 1 is slightly smaller than the maximum contact load in the case of Example 1, and an excessive decrease in the maximum contact load is suppressed. I understand.
  • FIG. 7 shows the evaluation when the position of the change point P is changed between the positions A1 and A2.
  • the evaluation results are indicated by the ratio (%) to the maximum insertion force or maximum contact load of Example 2.
  • This evaluation was derived by two-dimensional CAE analysis using the finite element method instead of three-dimensional CAE analysis as described above.
  • evaluation by two-dimensional CAE analysis for the press-fit portion 230 shown in FIG. 5 is shown.
  • the maximum contact load in Examples 2 to 6 is equal to or larger than Example 2, and it is confirmed that excessive reduction of the contact load is suppressed. Recognize.
  • Example 2 the insertion force into the through-hole 13B having the second diameter ⁇ 2 can be reduced more than in Example 2, and an appropriate contact load that does not become excessive can be obtained. , the contact load on the through-hole 13A having the first diameter ⁇ 1 can be suppressed from becoming too small.
  • setting L1/L2 ⁇ 0.6 effectively prevents the contact load on the through hole 13A having the first diameter ⁇ 1 from becoming too small. It has also been found to be effective to set L1/L2 ⁇ 0.7, more preferably L1/L2 ⁇ 1.2.
  • L1/L2 ⁇ 7 the insertion force and contact load when the press-fit terminal 20 is inserted into the through-hole 13B having the second diameter ⁇ 2 are unlikely to be excessive.

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  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

The purpose of the present invention is to provide a press-fit terminal adaptable to a through-hole of a first diameter, and a through-hole of a second diameter smaller than the first diameter. This press-fit terminal comprises a tip part and a press-fit part continuing from the tip part. The press-fit part includes two contact pieces facing each other across an eye hole, and both outer edges of the press-fit part include two parallel edges arranged in a parallel orientation, and two inclined edges that incline outwardly from the tip part toward the parallel edges. The inclined edges include a first inclined portion and a second inclined portion positioned closer to the parallel edge side than the first inclined portion. The second inclined portion inclines more than the first inclined portion with respect to the parallel edges.

Description

プレスフィット端子及びプレスフィット端子付基板Press-fit terminals and substrates with press-fit terminals
　本開示は、プレスフィット端子及びプレスフィット端子付基板に関する。 The present disclosure relates to press-fit terminals and substrates with press-fit terminals.
　特許文献１は、プレスフィット端子においてスルーホールに挿入される固定部が、弾性的変形を行う両持ち梁構造からなる一対の弾性変形脚を有すること、一対の弾性変形脚の外縁部のテーパ部が複数の直線によって構成され得ることが開示されている。 Patent Document 1 discloses that a fixing portion inserted into a through hole in a press-fit terminal has a pair of elastically deformable legs made of a double-supported beam structure that elastically deforms, and a tapered portion at the outer edge of the pair of elastically deformable legs. can be constituted by a plurality of straight lines.
特開２００８－５３０８２号公報JP-A-2008-53082
　ところで、プレスフィット端子に関しては、基板に形成されたスルーホールに対して一定以上の接触荷重を確保することが要請される。一定以上の接触荷重が確保されることによって、車載環境下における温度及び振動による影響に対して接続信頼性が得られる。また、スルーホールに対して一定以上の接触荷重が確保されることによって、基板からの引抜きに要する保持力が一定以上となり、振動等によって端子が基板から離脱することが抑制される。 By the way, regarding press-fit terminals, it is required to secure a certain or more contact load to the through-holes formed in the substrate. By ensuring a contact load above a certain level, connection reliability can be obtained against the effects of temperature and vibration in an in-vehicle environment. Further, since a contact load of a certain level or more is secured for the through-hole, a holding force required for pulling out the terminal from the board becomes a certain level or more, and the terminal is prevented from being detached from the board due to vibration or the like.
　一方、スルーホールへのプレスフィット端子の挿入時及び挿入後の状態において、基板へのダメージを低減するためには、プレスフィット端子をスルーホールに挿入する際に必要となる挿入力を低く抑える必要がある。また、接触荷重についても、大きくなりすぎないようにする必要がある。 On the other hand, in order to reduce damage to the substrate during and after insertion of the press-fit terminal into the through-hole, it is necessary to reduce the insertion force required when inserting the press-fit terminal into the through-hole. There is Also, it is necessary to prevent the contact load from becoming too large.
　このため、接触荷重を適切な範囲に設定しつつ、挿入力をなるべく小さくすることが要請される。しかしながら、一般的には、接触荷重を大きくすることと、挿入力を小さくすることとは、相反する要請である。例えば、挿入力を小さくしようとすると、接触荷重も小さくなってしまう。このため、プレスフィット端子の形状設計を行う際には、接触荷重と挿入力とのバランスを考慮することが要請される。 Therefore, it is required to keep the insertion force as small as possible while setting the contact load within an appropriate range. However, in general, increasing the contact load and decreasing the insertion force are conflicting demands. For example, when trying to reduce the insertion force, the contact load also decreases. Therefore, when designing the shape of the press-fit terminal, it is required to consider the balance between the contact load and the insertion force.
　ここにおいて、異なる直径のスルーホールに対応可能なプレスフィット端子の開発が要請される。しかしながら、大きい直径のスルーホールに合わせてプレスフィット端子の形状設計を行うと、小さい直径のスルーホールに対しては挿入力及び接触荷重が大きくなり過ぎてしまう可能性がある。また、小さい直径のスルーホールに合わせてプレスフィット端子の形状設計を行うと、大きい直径のスルーホールに対しては接触荷重が小さくなり過ぎてしまう可能性がある。 Here, the development of press-fit terminals that can accommodate through-holes of different diameters is required. However, if the shape of the press-fit terminal is designed for a large diameter through hole, the insertion force and contact load may become too large for a small diameter through hole. Further, if the shape of the press-fit terminal is designed according to the small diameter through hole, the contact load may become too small for the large diameter through hole.
　そこで、本開示は、第１の直径のスルーホールと、第１の直径よりも小さい第２の直径のスルーホールとに適応可能なプレスフィット端子を提供することを目的とする。 Accordingly, an object of the present disclosure is to provide a press-fit terminal adaptable to a first diameter through hole and a second diameter through hole smaller than the first diameter.
　本開示のプレスフィット端子は、先端部と、前記先端部に連なるプレスフィット部とを備え、前記プレスフィット部は、アイホールを隔てて対向する２つの接触片を含み、前記プレスフィット部の両外側縁は、平行姿勢で並ぶ２つの平行縁と、前記先端部から前記平行縁に向けて外向き傾斜する２つの傾斜縁とを含み、前記傾斜縁は、第１傾斜部と、前記第１傾斜部よりも前記平行縁側に位置する第２傾斜部とを含み、前記第２傾斜部は、前記平行縁に対して前記第１傾斜部よりも大きく傾斜する、プレスフィット端子である。 A press-fit terminal of the present disclosure includes a tip portion and a press-fit portion continuous with the tip portion, the press-fit portion including two contact pieces facing each other across an eyehole, and The outer edge includes two parallel edges arranged in a parallel posture and two slanted edges outwardly slanted from the tip toward the parallel edges, the slanted edges comprising a first slanted portion and the first and a second inclined portion located closer to the parallel edge than the inclined portion, the second inclined portion being inclined with respect to the parallel edge more than the first inclined portion.
　本開示によれば、第１の直径のスルーホールと、第１の直径よりも小さい第２の直径のスルーホールとに適応可能なプレスフィット端子を提供できる。 According to the present disclosure, it is possible to provide a press-fit terminal adaptable to through-holes of a first diameter and through-holes of a second diameter smaller than the first diameter.
図１は実施形態に係るプレスフィット端子を示す正面図である。1 is a front view showing a press-fit terminal according to an embodiment; FIG. 図２はプレスフィット端子がスルーホールに挿入された状態を示す説明図である。FIG. 2 is an explanatory view showing a state in which press-fit terminals are inserted into through holes. 図３は傾斜部を示す拡大図である。FIG. 3 is an enlarged view showing the inclined portion. 図４はプレスフィット端子が基板に圧入されたプレスフィット端子付基板を示す図である。FIG. 4 is a diagram showing a substrate with press-fit terminals in which press-fit terminals are press-fitted into the substrate. 図５は例１に係るプレスフィット端子を示す拡大図である。FIG. 5 is an enlarged view showing a press-fit terminal according to Example 1. FIG. 図６はプレスフィット端子の評価結果を示す図である。FIG. 6 is a diagram showing evaluation results of press-fit terminals. 図７はプレスフィット端子の評価結果を示す図である。FIG. 7 is a diagram showing evaluation results of press-fit terminals.
　［本開示の実施形態の説明］
　最初に本開示の実施態様を列記して説明する。 [Description of Embodiments of the Present Disclosure]
First, the embodiments of the present disclosure are listed and described.
　本開示のプレスフィット端子は、次の通りである。 The press-fit terminal of the present disclosure is as follows.
　（１）先端部と、前記先端部に連なるプレスフィット部とを備え、前記プレスフィット部は、アイホールを隔てて対向する２つの接触片を含み、前記プレスフィット部の両外側縁は、平行姿勢で並ぶ２つの平行縁と、前記先端部から前記平行縁に向けて外向き傾斜する２つの傾斜縁とを含み、前記傾斜縁は、第１傾斜部と、前記第１傾斜部よりも前記平行縁側に位置する第２傾斜部とを含み、前記第２傾斜部は、前記平行縁に対して前記第１傾斜部よりも大きく傾斜する、プレスフィット端子である。 (1) A tip portion and a press-fit portion connected to the tip portion, wherein the press-fit portion includes two contact pieces facing each other across an eyehole, and both outer edges of the press-fit portion are parallel to each other. and two slanted edges sloping outwardly from said distal end toward said parallel edges, said slanted edges comprising a first slanted portion and said further than said first slanted portion. a second slanted portion located on a side of the parallel edge, the second slanted portion being more inclined with respect to the parallel edge than the first slanted portion.
　このプレスフィット端子によると、プレスフィット端子を第２の直径のスルーホールに挿入する際には、挿入初期に傾斜角度が小さい第１傾斜部が第２の直径のスルーホールの内周面に接触することで、第２の直径のスルーホールに対する挿入力を下げることができ、かつ、過大とならない適切な接触荷重を得ることができる。また、プレスフィット端子を第１の直径のスルーホールに挿入する際には、少なくとも挿入後期で傾斜部が大きい第２傾斜部が第１の直径のスルーホールの内周面に接触することで、接触荷重が小さくなり過ぎることを抑制できる。これにより、プレスフィット端子は、第１の直径のスルーホールと、第１の直径よりも小さい第２の直径のスルーホールとに適応可能となる。 According to this press-fit terminal, when the press-fit terminal is inserted into the through hole of the second diameter, the first inclined portion having a small inclination angle comes into contact with the inner peripheral surface of the through hole of the second diameter at the initial stage of insertion. By doing so, it is possible to reduce the insertion force with respect to the through hole of the second diameter, and obtain an appropriate contact load that does not become excessive. Further, when inserting the press-fit terminal into the through-hole of the first diameter, the second inclined portion, which has a large inclined portion, contacts the inner peripheral surface of the through-hole of the first diameter at least in the latter stage of insertion, It is possible to prevent the contact load from becoming too small. This allows the press-fit terminal to accommodate a first diameter through-hole and a second diameter through-hole that is smaller than the first diameter.
　（２）（１）のプレスフィット端子であって、前記第１傾斜部から前記第２傾斜部への変化点が、前記プレスフィット部の長手方向において、前記プレスフィット部の両外側縁が前記第１の直径と同じ幅になる位置と、前記第２の直径と同じ幅になる位置との間に位置してもよい。 (2) In the press-fit terminal of (1), the point of change from the first inclined portion to the second inclined portion is the longitudinal direction of the press-fit portion, and both outer edges of the press-fit portion are the It may be located between a position that is as wide as the first diameter and a position that is as wide as the second diameter.
　この場合、プレスフィット端子を第２の直径のスルーホールに挿入する際には、第１傾斜部を第２の直径のスルーホールの内周面に接触させて、第２の直径のスルーホールに対する挿入力を下げることができ、かつ、過大とならない適切な接触荷重を得ることができる。また、プレスフィット端子を第１の直径のスルーホールに挿入する際には、第２傾斜部を第２の直径のスルーホールの内周面に接触させることで、接触荷重が小さくなり過ぎることを抑制できる。 In this case, when inserting the press-fit terminal into the through hole of the second diameter, the first inclined portion is brought into contact with the inner peripheral surface of the through hole of the second diameter, and the through hole of the second diameter is inserted. It is possible to reduce the insertion force and obtain an appropriate contact load that does not become excessive. Also, when inserting the press-fit terminal into the through-hole of the first diameter, it is possible to prevent the contact load from becoming too small by bringing the second inclined portion into contact with the inner peripheral surface of the through-hole of the second diameter. can be suppressed.
　（３）（２）のプレスフィット端子であって、前記プレスフィット部の長手方向において、前記プレスフィット部の両外側縁が前記第１の直径と同じ幅になる位置と前記変化点との距離をＬ１、前記プレスフィット部の両外側縁が前記第２の直径と同じ幅になる位置と前記変化点との距離をＬ２としたとき、Ｌ１／Ｌ２≦７となるように設定されてもよい。 (3) In the press-fit terminal of (2), in the longitudinal direction of the press-fit portion, the distance between the change point and a position where both outer edges of the press-fit portion have the same width as the first diameter is L1, and L2 is the distance between a position where both outer edges of the press-fit portion have the same width as the second diameter and the point of change, L1/L2≤7. .
　Ｌ１／Ｌ２≦７に設定されることで、プレスフィット端子が第２の直径のスルーホールに挿入される際の挿入力が過大になり難い。 By setting L1/L2≦7, the insertion force is less likely to become excessive when the press-fit terminal is inserted into the through-hole having the second diameter.
　（４）（２）又は（３）のプレスフィット端子であって、前記プレスフィット部の長手方向において、前記プレスフィット部の両外側縁が前記第１の直径と同じ幅になる位置と前記変化点との距離をＬ１、前記プレスフィット部の両外側縁が前記第２の直径と同じ幅になる位置と前記変化点との距離をＬ２としたとき、Ｌ１／Ｌ２≧０．６となるように設定されてもよい。 (4) In the press-fit terminal of (2) or (3), in the longitudinal direction of the press-fit portion, both outer edges of the press-fit portion have the same width as the first diameter, and the change L1 is the distance from the point, and L2 is the distance between the position where both outer edges of the press-fit portion have the same width as the second diameter and the point of change, so that L1/L2≧0.6. may be set to
　Ｌ１／Ｌ２≧０．６となるように設定されることで、プレスフィット端子が第１の直径のスルーホールに挿入される際の接触荷重が小さくなり過ぎない。 By setting L1/L2≧0.6, the contact load when the press-fit terminal is inserted into the through-hole having the first diameter does not become too small.
　（５）（１）から（４）のいずれか１つのプレスフィット端子は、第１の直径のスルーホールと前記第１の直径よりも小さい第２の直径のスルーホールの両方に適応可能であってもよい。 (5) The press-fit terminal of any one of (1) to (4) is adaptable to both a first diameter through hole and a second diameter through hole smaller than the first diameter. may
　また、本開示のプレスフィット端子付基板は、次の通りである。 Also, the substrate with press-fit terminals of the present disclosure is as follows.
　（６）スルーホールが形成された基板と、前記プレスフィット部が前記スルーホールに圧入された（１）から（４）のいずれか１つのプレスフィット端子と、を備える、プレスフィット端子付基板である。 (6) A substrate with press-fit terminals, comprising: a substrate having a through-hole formed thereon; be.
　これにより、スルーホールの直径の大小に拘らず、適切な挿入力及び接触荷重でプレスフィット端子がスルーホールに挿入されたプレスフィット端子付基板を得ることができる。 As a result, it is possible to obtain a substrate with press-fit terminals in which the press-fit terminals are inserted into the through-holes with an appropriate insertion force and contact load regardless of the diameter of the through-holes.
　［本開示の実施形態の詳細］
　本開示のプレスフィット端子及びプレスフィット端子付基板の具体例を、以下に図面を参照しつつ説明する。なお、本開示はこれらの例示に限定されるものではなく、請求の範囲によって示され、請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 [Details of the embodiment of the present disclosure]
Specific examples of the press-fit terminal and the substrate with press-fit terminal of the present disclosure will be described below with reference to the drawings. The present disclosure is not limited to these examples, but is indicated by the scope of the claims, and is intended to include all modifications within the meaning and scope of equivalents of the scope of the claims.
　[実施形態]
　以下、実施形態に係るプレスフィット端子及びプレスフィット端子について説明する。図１はプレスフィット端子２０を示す正面図である。図１にはプレスフィット端子２０の挿入対象となるスルーホール１３Ａ、１３Ｂが形成された基板１２Ａ、１２Ｂの断面が示される。図２はプレスフィット端子２０がスルーホール１３Ａに挿入された状態を示す説明図である。 [Embodiment]
A press-fit terminal and a press-fit terminal according to embodiments will be described below. FIG. 1 is a front view showing a press-fit terminal 20. FIG. FIG. 1 shows cross sections of substrates 12A and 12B formed with through holes 13A and 13B into which press-fit terminals 20 are inserted. FIG. 2 is an explanatory diagram showing a state in which the press-fit terminal 20 is inserted into the through hole 13A.
　プレスフィット端子２０は、基板１２Ａ、１２Ｂに形成されたスルーホール１３Ａ、１３Ｂに圧入される端子である。 The press-fit terminals 20 are terminals press-fitted into through holes 13A and 13B formed in the substrates 12A and 12B.
　ここで、基板１２Ａ、１２Ｂは、ガラスエポキシ板等の絶縁板等によって形成されている。基板１２Ａ、１２Ｂには、表裏に貫通するスルーホール１３Ａ、１３Ｂが形成されている。スルーホール１３Ａ、１３Ｂは、例えば、円形の孔である。スルーホール１３Ａ、１３Ｂの内面には、銅等の金属による導電層１３ｆが形成される。プレスフィット端子２０がスルーホール１３Ａ、１３Ｂに圧入された状態で、プレスフィット端子２０が導電層１３ｆに接触して、当該導電層１３ｆに電気的に接続される。導電層１３ｆは、基板１２Ａ、１２Ｂの表面等に形成された回路に接続されていてもよい。 Here, the substrates 12A and 12B are formed of insulating plates such as glass epoxy plates. Through- holes 13A and 13B are formed through the substrates 12A and 12B, respectively. The through holes 13A and 13B are circular holes, for example. A conductive layer 13f made of a metal such as copper is formed on the inner surfaces of the through holes 13A and 13B. While the press-fit terminal 20 is press-fitted into the through holes 13A and 13B, the press-fit terminal 20 contacts the conductive layer 13f and is electrically connected to the conductive layer 13f. The conductive layer 13f may be connected to circuits formed on the surfaces of the substrates 12A and 12B.
　基板１２Ａに形成されたスルーホール１３Ａと基板１２Ｂに形成されたスルーホール１３Ｂとは異なる直径の孔（例えば、円形孔）であることが想定される。スルーホール１３Ａの直径は、第１の直径φ１であり、スルーホール１３Ｂの直径は、第１の直径φ１よりも小さい第２の直径φ２である。プレスフィット端子２０は、スルーホール１３Ａに圧入されても、スルーホール１３Ｂに圧入されても、導電層１３ｆに対する電気的接続状態を保つことができるため、プレスフィット端子２０は、第１の直径φ１のスルーホール１３Ａと第２の直径φ２のスルーホール１３Ｂの両方に適応可能である。なお、第１の直径φ１のスルーホール１３Ａと第２の直径φ２のスルーホール１３Ｂとが同じ基板において異なる位置に形成されている場合もあり得る。この場合、例えば、圧入前には同じ形状であったプレスフィット端子２０の挿入部分が、同じ基板に形成されたスルーホール１３Ａとスルーホール１３Ｂとの両方に挿入される。 It is assumed that the through holes 13A formed in the substrate 12A and the through holes 13B formed in the substrate 12B have different diameters (for example, circular holes). The diameter of the through hole 13A is a first diameter φ1, and the diameter of the through hole 13B is a second diameter φ2 smaller than the first diameter φ1. The press-fit terminal 20 can maintain electrical connection with the conductive layer 13f regardless of whether the press-fit terminal 20 is press-fitted into the through-hole 13A or the through-hole 13B. through hole 13A and second through hole 13B of diameter φ2. The through hole 13A with the first diameter φ1 and the through hole 13B with the second diameter φ2 may be formed at different positions on the same substrate. In this case, for example, the insertion portions of the press-fit terminals 20 having the same shape before press-fitting are inserted into both the through- holes 13A and 13B formed in the same substrate.
　プレスフィット端子２０は、銅、銅合金等の金属によって形成される。プレスフィット端子２０は、例えば、金属板をプレス加工することによって形成されてもよい。プレスフィット端子２０の表面には、錫、錫合金等のめっきが形成されてもよい。 The press-fit terminal 20 is made of metal such as copper or copper alloy. The press-fit terminal 20 may be formed by pressing a metal plate, for example. The surface of the press-fit terminal 20 may be plated with tin, a tin alloy, or the like.
　プレスフィット端子２０は、先端部２２と先端部２２に連なるプレスフィット部３０を備える。本実施形態では、プレスフィット部３０の一端部に先端部２２が連なり、プレスフィット部３０の他端部に基端部２６が連なる。先端部２２は、プレスフィット端子２０がスルーホール１３Ａ、１３Ｂに挿入される際に、最初にスルーホール１３Ａ、１３Ｂに挿入される部分である。基端部２６は、スルーホール１３Ａ、１３Ｂ側の導電層１３ｆの電気的な接続先となる部分が連なる部分である。後述する図４に示す例では、基端部２６はコネクタ端子部６４に連なる。プレスフィット端子２０の厚みは、例えば、０．２０ｍｍ以上、０．８０ｍｍ以下である。なお、プレスフィット部３０が挿入される向きを先端又は前、挿入される向きとは逆向きを基端又は後ろという場合がある。 The press-fit terminal 20 includes a tip portion 22 and a press-fit portion 30 that continues from the tip portion 22 . In this embodiment, one end of the press-fit portion 30 is connected to the distal end portion 22 , and the other end of the press-fit portion 30 is connected to the proximal end portion 26 . The tip portion 22 is a portion that is first inserted into the through holes 13A and 13B when the press-fit terminal 20 is inserted into the through holes 13A and 13B. The base end portion 26 is a portion where portions to be electrically connected to the conductive layer 13f on the side of the through holes 13A and 13B are connected. In the example shown in FIG. 4 which will be described later, the base end portion 26 continues to the connector terminal portion 64 . The thickness of the press-fit terminal 20 is, for example, 0.20 mm or more and 0.80 mm or less. The direction in which the press-fit portion 30 is inserted may be referred to as the front end or front, and the direction opposite to the direction of insertion may be referred to as the base end or rear.
　プレスフィット部３０は、先端部２２と基端部２６との間に設けられる部分である。プレスフィット部３０の幅Ｗ２（ここでは最大幅）は、先端部２２の幅Ｗ１よりも大きい。プレスフィット部３０の幅Ｗ２は、基端部２６の幅Ｗ３よりも大きい。先端部２２の幅Ｗ１は、第１の直径φ１及び第２の直径φ２のいずれよりも小さい。このため、先端部２２は、スルーホール１３Ａ、１３Ｂの内周面に押付けられることなく、当該スルーホール１３Ａ、１３Ｂを通過することができる。プレスフィット部３０の幅Ｗ２は、第１の直径φ１及び第２の直径φ２のいずれよりも大きい。このため、プレスフィット部３０は、スルーホール１３Ａ、１３Ｂの内周面に対して押付けられた状態で接触することができる。プレスフィット部３０は、スルーホール１３Ａ、１３Ｂの内周面に対する接触状態を保つことで、導電層１３ｆに対して電気的な接続を得るための部分であると把握されてもよい。 The press-fit portion 30 is a portion provided between the distal end portion 22 and the proximal end portion 26 . A width W<b>2 (here, the maximum width) of the press-fit portion 30 is greater than the width W<b>1 of the distal end portion 22 . The width W2 of the press-fit portion 30 is greater than the width W3 of the proximal portion 26. As shown in FIG. The width W1 of the tip portion 22 is smaller than both the first diameter φ1 and the second diameter φ2. Therefore, the tip portion 22 can pass through the through holes 13A and 13B without being pressed against the inner peripheral surfaces of the through holes 13A and 13B. The width W2 of the press-fit portion 30 is larger than both the first diameter φ1 and the second diameter φ2. Therefore, the press-fit portion 30 can come into contact with the inner peripheral surfaces of the through holes 13A and 13B while being pressed. The press-fit portion 30 may be grasped as a portion for obtaining electrical connection to the conductive layer 13f by maintaining contact with the inner peripheral surfaces of the through holes 13A and 13B.
　より具体的には、プレスフィット端子２０は、全体として直線状に延びる細長い板状部分を含む。当該細長い板状部分に、先端側から基端側に向けて順次、先端部２２、プレスフィット部３０及び基端部２６が形成される。 More specifically, the press-fit terminal 20 includes an elongated plate-like portion extending linearly as a whole. A distal end portion 22, a press fit portion 30 and a proximal end portion 26 are sequentially formed on the elongated plate-like portion from the distal end side toward the proximal end side.
　先端部２２は、長方形板状部分と先細り形状部分とを含む。長方形状部分は、プレスフィット部３０から先端側に延びる部分であり、同幅部分が連続する部分である。先細り形状部分は、長方形状部分からさらに先端側に延びる部分であり、先端側に向けて徐々に細幅となる形状である。先細り形状部分の存在により、プレスフィット端子２０がスルーホール１３Ａ、１３Ｂ内に容易に挿入される。先端部２２は、スルーホール１３Ａ、１３Ｂの内周面に対して隙間をあけた状態でスルーホール１３Ａ、１３Ｂに挿入され得る。 The tip portion 22 includes a rectangular plate-shaped portion and a tapered portion. The rectangular portion is a portion extending from the press-fit portion 30 toward the distal end side, and is a portion where portions of the same width are continuous. The tapered portion is a portion that extends from the rectangular portion toward the distal end, and has a shape that gradually narrows toward the distal end. The presence of the tapered portion facilitates insertion of the press-fit terminal 20 into the through holes 13A, 13B. The tip portion 22 can be inserted into the through- holes 13A, 13B with a gap from the inner peripheral surfaces of the through- holes 13A, 13B.
　基端部２６は、同幅部分が連続する長方形板状部分を含む。この長方形板状部分の両側の縁は互いに平行である。基端部は、長方形板状でなくてもよい。例えば、基端部はプレスフィット部に向けて徐々に狭くなる又は広くなる形状であってもよい。基端部は、プレスフィット部の幅よりも大きい部分を有していてもよい。 The base end portion 26 includes a rectangular plate-like portion with continuous portions of the same width. The edges on both sides of this rectangular plate-like portion are parallel to each other. The base end portion does not have to be rectangular plate-shaped. For example, the proximal portion may have a shape that tapers or widens toward the press-fit portion. The proximal end may have a portion greater than the width of the press-fit portion.
　プレスフィット部３０は、先端部２２と基端部２６との間に設けられる。プレスフィット部３０は、アイホール（eye hole）３１を隔てて対向する２つの接触片３４を含む。アイホール３１は、先端部２２と基端部２６とを結ぶ方向に細長い孔である。アイホール３１の形状としては、具体的には、真円、オーバル形状、正方形、長方形等が挙げられる。アイホール３１は、プレスフィット端子が挿入される方向に細長いことが好ましい。本実施形態では、アイホール３１は、互いに平行な一対の内周縁と、当該一対の内周縁の両端に連なる一対の半円弧状の縁とで囲まれた細長い形状である。２つの接触片３４の一端部は、先端部２２に連なっている。２つの接触片３４の他端部は、基端部２６に連なっている。 The press-fit portion 30 is provided between the distal end portion 22 and the proximal end portion 26 . The press-fit portion 30 includes two contact pieces 34 facing each other across an eye hole 31 . The eyehole 31 is an elongated hole extending in a direction connecting the distal end portion 22 and the proximal end portion 26 . Specific examples of the shape of the eyehole 31 include a perfect circle, an oval shape, a square shape, a rectangular shape, and the like. The eyehole 31 is preferably elongated in the direction in which the press-fit terminal is inserted. In this embodiment, the eyehole 31 has an elongated shape surrounded by a pair of inner peripheral edges parallel to each other and a pair of semicircular arc-shaped edges connected to both ends of the pair of inner peripheral edges. One ends of the two contact pieces 34 are connected to the tip portion 22 . The other ends of the two contact pieces 34 are connected to the base end 26 .
　プレスフィット部３０の両外側縁は、平行縁３５と、当該平行縁３５に対して先端側に位置する傾斜縁３６とを含む。本実施形態では、プレスフィット部３０の両外側縁は、さらに、平行縁３５に対して基端側に位置する傾斜縁３７を含む。なお、プレスフィット部３０の両外側縁は、２つの接触片３４においてうちアイホール３１とは反対側の外側の縁である。 Both outer edges of the press-fit portion 30 include a parallel edge 35 and an inclined edge 36 located on the distal side with respect to the parallel edge 35 . In this embodiment, the lateral edges of the press-fit portion 30 further include beveled edges 37 located proximal to the parallel edges 35 . Both outer edges of the press-fit portion 30 are the outer edges of the two contact pieces 34 on the side opposite to the eyehole 31 .
　平行縁３５は、プレスフィット部３０の長手方向に沿って互いに平行姿勢で並んでいる。平行縁３５は、アイホール３１の長手方向に沿っている。プレスフィット部３０の長手方向において、平行縁３５は、アイホール３１における互いに平行な一対の内周縁の存在範囲内に位置していてもよい。 The parallel edges 35 are arranged parallel to each other along the longitudinal direction of the press-fit portion 30 . The parallel edges 35 run along the longitudinal direction of the eyehole 31 . In the longitudinal direction of the press-fit portion 30 , the parallel edge 35 may be positioned within the existence range of a pair of mutually parallel inner peripheral edges of the eyehole 31 .
　先端側の傾斜縁３６は、先端部２２から平行縁３５に向けて外向き傾斜するように形成されている。よって、プレスフィット部３０のうち傾斜縁３６が形成された部分は、先端部２２から基端側に向けて徐々に幅広になる。プレスフィット部３０の長手方向において、先端側の傾斜縁３６は、アイホール３１のうち先端側の半円弧状の縁が存在する範囲を含む範囲に形成されてもよい。 The inclined edge 36 on the tip side is formed so as to incline outward from the tip portion 22 toward the parallel edge 35 . Therefore, the portion of the press-fit portion 30 where the inclined edge 36 is formed gradually widens from the distal end portion 22 toward the proximal end side. In the longitudinal direction of the press-fit portion 30 , the tip-side inclined edge 36 may be formed in a range including a range where the tip-side semi-arcuate edge of the eyehole 31 exists.
　基端側の傾斜縁３７は、基端部２６から平行縁３５に向けて外向き傾斜するように形成されている。よって、プレスフィット部３０のうち傾斜縁３６が形成された部分は、基端部２６から基端側に向けて徐々に幅広になる。プレスフィット部３０の長手方向において、基端側の傾斜縁は、アイホール３１のうち基端側の半円弧状の縁が存在する範囲を含む範囲に形成されてもよい。 The inclined edge 37 on the base end side is formed so as to be inclined outward from the base end portion 26 toward the parallel edge 35 . Therefore, the portion of the press-fit portion 30 where the inclined edge 36 is formed gradually widens from the base end portion 26 toward the base end side. In the longitudinal direction of the press-fit portion 30 , the proximal-side inclined edge may be formed in a range including the range where the proximal-side semi-circular edge of the eyehole 31 exists.
　先端側の傾斜縁３６は、第１傾斜部３６ａと、第１傾斜部３６ａよりも平行縁３５近くに位置する第２傾斜部３６ｂとを含む。第２傾斜部３６ｂは、平行縁３５に対して第２傾斜部３６ｂよりも大きく傾斜している。つまり、平行縁３５はプレスフィット部３０の長手方向に沿っており、プレスフィット部３０の長手方向に対する第１傾斜部３６ａの傾斜角度をα１、プレスフィット部３０の長手方向に対する第２傾斜部３６ｂの傾斜角度をα２とする。すると、α１＜α２である。 The inclined edge 36 on the tip side includes a first inclined portion 36a and a second inclined portion 36b positioned closer to the parallel edge 35 than the first inclined portion 36a. The second inclined portion 36b is inclined with respect to the parallel edge 35 more than the second inclined portion 36b. That is, the parallel edge 35 extends along the longitudinal direction of the press-fit portion 30, the inclination angle of the first inclined portion 36a with respect to the longitudinal direction of the press-fit portion 30 is α1, and the second inclined portion 36b with respect to the longitudinal direction of the press-fit portion 30 is α1. is the inclination angle α2. Then, α1<α2.
　なお、先端部２２の側縁と第１傾斜部３６ａ、第１傾斜部３６ａと第２傾斜部３６ｂ、第２傾斜部３６ｂと平行縁３５とは、角をなして連なっていてもよいし、曲線を介して連なっていてもよい。 Note that the side edge of the distal end portion 22 and the first inclined portion 36a, the first inclined portion 36a and the second inclined portion 36b, and the second inclined portion 36b and the parallel edge 35 may form an angle and continue to form an angle. They may be connected via a curve.
　ここで、第１傾斜部３６ａから第２傾斜部３６ｂへの変化点をＰとする。変化点Ｐは、プレスフィット部３０の長手方向において、プレスフィット部３０の両外側縁が第１の直径φ１と同じ幅になる位置Ａ１と、プレスフィット部３０の両外側縁が第２の直径φ２と同じ幅になる位置Ａ２との間に位置してもよい。この場合、プレスフィット部３０を第１の直径φ１のスルーホール１３Ａに挿入すると、プレスフィット部３０のうち２つの第１傾斜部３６ａがスルーホール１３Ａの内周面に最初に押付けられる。プレスフィット部３０を第２の直径φ２のスルーホール１３Ｂに挿入すると、プレスフィット部３０のうち２つの第２傾斜部３６ｂがスルーホール１３Ａの内周面に最初に押付けられる。 Here, let P be the point of change from the first inclined portion 36a to the second inclined portion 36b. In the longitudinal direction of the press-fit portion 30, the change point P is a position A1 where both outer edges of the press-fit portion 30 have the same width as the first diameter φ1, and a position A1 where both outer edges of the press-fit portion 30 have the same width as the first diameter φ1. It may be positioned between position A2 and position A2 that has the same width as φ2. In this case, when the press-fit portion 30 is inserted into the through-hole 13A having the first diameter φ1, the two first inclined portions 36a of the press-fit portion 30 are first pressed against the inner peripheral surface of the through-hole 13A. When the press-fit portion 30 is inserted into the through-hole 13B having the second diameter φ2, the two second inclined portions 36b of the press-fit portion 30 are first pressed against the inner peripheral surface of the through-hole 13A.
　プレスフィット部３０がスルーホール１３Ａに挿入された状態では、２つの接触片３４がスルーホール１３Ａの内周面によって内側に変形し、プレスフィット部３０のうち少なくとも２つの平行縁３５がスルーホール１３Ａの内周面に押し当てられる状態となる。また、傾斜縁３６の第２傾斜部３６ｂのうち平行縁３５に近い部分はスルーホール１３Ａの内周面に押し当てられるが、第１傾斜部３６ａはスルーホール１３Ａの内周面から離れた状態となっていることが想定される。この場合、変化点Ｐは、スルーホール１３Ａの内周面に押し当てられず、当該内周面から離れた位置に観察されることが想定される。 When the press-fit portion 30 is inserted into the through-hole 13A, the two contact pieces 34 are deformed inward by the inner peripheral surface of the through-hole 13A, and at least two parallel edges 35 of the press-fit portion 30 are aligned with the through-hole 13A. It will be in a state of being pressed against the inner peripheral surface of the A portion of the second inclined portion 36b of the inclined edge 36 near the parallel edge 35 is pressed against the inner peripheral surface of the through hole 13A, but the first inclined portion 36a is separated from the inner peripheral surface of the through hole 13A. It is assumed that In this case, it is assumed that the change point P is not pressed against the inner peripheral surface of the through hole 13A and is observed at a position away from the inner peripheral surface.
　一方、プレスフィット部３０がスルーホール１３Ｂに挿入された状態では、平行縁３５、第２傾斜部３６ｂ、さらに、第１傾斜部３６ａのうち第２傾斜部３６ｂ寄りの部分がスルーホール１３Ａの内周面に押し当てられる状態となることが想定される。このため、変化点Ｐもスルーホール１３Ａの内周面に押し当てられた状態となっていることが想定される。 On the other hand, when the press-fit portion 30 is inserted into the through hole 13B, the parallel edge 35, the second inclined portion 36b, and the portion of the first inclined portion 36a closer to the second inclined portion 36b are positioned inside the through hole 13A. It is assumed that it will be in a state of being pressed against the peripheral surface. Therefore, it is assumed that the change point P is also pressed against the inner peripheral surface of the through hole 13A.
　本実施形態に係るプレスフィット端子２０によると、プレスフィット端子２０を小さい方の第２の直径φ２のスルーホール１３Ｂに挿入すると、最初に小さい方の傾斜角度α１である第１傾斜部３６ａがスルーホール１３Ｂの内周面に接触する。変形初期段階から傾斜角度α１が小さい第１傾斜部３６ａがスルーホール１３Ｂの内周面に押し当てられることで、接触片３４がスムーズに変形し、挿入力及び接触荷重が過大となったり、プレスフィット部３０が過大な力でスルーホール１３Ｂの内周面に押し当てられたりすることを抑制できる。これにより、プレスフィット部３０がスルーホール１３Ｂの内周面に過大とならず適切な接触荷重で押し当てられる。 According to the press-fit terminal 20 according to the present embodiment, when the press-fit terminal 20 is inserted into the through hole 13B having the smaller second diameter φ2, the first inclined portion 36a having the smaller inclination angle α1 first passes through. It contacts the inner peripheral surface of the hole 13B. Since the first inclined portion 36a having a small inclination angle α1 is pressed against the inner peripheral surface of the through hole 13B from the initial stage of deformation, the contact piece 34 is smoothly deformed, and the insertion force and the contact load become excessive. It is possible to prevent the fitting portion 30 from being pressed against the inner peripheral surface of the through hole 13B with an excessive force. As a result, the press-fit portion 30 is pressed against the inner peripheral surface of the through hole 13B with an appropriate contact load without being excessively large.
　また、プレスフィット端子２０を大きい方の第１の直径φ１のスルーホール１３Ａに挿入する場合、スルーホール１３Ａの第１の直径φ１は、スルーホール１３Ｂの第２の直径φ２よりも大きいため、上記場合よりも挿入力及び接触荷重は低下することが考えられる。しかしながら、プレスフィット部３０の変形初期段階において、プレスフィット部３０の長手方向に対する傾斜角度α２が大きい第２傾斜部３６ｂがスルーホール１３Ａの内周面に押し当てられる。このため、主として傾斜角度α２が大きい第２傾斜部３６ｂが変形することによって、プレスフィット部３０をスルーホール１３Ａの内周面に押付ける力が生じる。これにより、接触荷重の過剰な低減が抑制され、プレスフィット部３０がスルーホール１３Ａの内周面に小さ過ぎない適切な接触荷重で押し当てられる。 Further, when the press-fit terminal 20 is inserted into the through-hole 13A having the larger first diameter φ1, the first diameter φ1 of the through-hole 13A is larger than the second diameter φ2 of the through-hole 13B. It is conceivable that the insertion force and contact load are lower than in the case. However, in the initial stage of deformation of the press-fit portion 30, the second inclined portion 36b having a large inclination angle α2 with respect to the longitudinal direction of the press-fit portion 30 is pressed against the inner peripheral surface of the through hole 13A. Therefore, the second inclined portion 36b having a large inclination angle α2 is mainly deformed, thereby generating a force to press the press-fit portion 30 against the inner peripheral surface of the through hole 13A. As a result, excessive reduction of the contact load is suppressed, and the press-fit portion 30 is pressed against the inner peripheral surface of the through hole 13A with an appropriate contact load that is not too small.
　これにより、プレスフィット部３０は、例えば、第１の直径φ１のスルーホール１３Ａと、第１の直径φ１よりも小さい第２の直径φ２のスルーホール１３Ｂとに、大き過ぎない挿入力で挿入でき、かつ、大き過ぎずかつ小さすぎない適切な接触荷重で挿入接続できるという意味で、両スルーホール１３Ａ、１３Ｂに適応可能となる。 As a result, the press-fit portion 30 can be inserted, for example, into the through hole 13A having a first diameter φ1 and the through hole 13B having a second diameter φ2 smaller than the first diameter φ1 with an insertion force that is not too large. Moreover, it can be applied to both through holes 13A and 13B in the sense that it can be inserted and connected with an appropriate contact load that is neither too large nor too small.
　また、第１傾斜部３６ａから第２傾斜部３６ｂへの変化点Ｐが、プレスフィット部３０の長手方向において、プレスフィット部３０の両外側縁が第１の直径φ１と同じ幅になる位置Ａ１と、第２の直径φ２と同じ幅になる位置Ａ２との間に位置する。このため、プレスフィット端子２０を第２の直径φ２のスルーホール１３Ｂに挿入する際には、第１傾斜部３６ａを第２の直径φ２のスルーホール１３Ｂの内周面に接触させて、挿入力を下げることができ、かつ、過大とならない適切な接触荷重を得ることができる。また、プレスフィット端子２０を第１の直径φ１のスルーホール１３Ａに挿入する際には、第２傾斜部３６ｂを第１の直径φ１のスルーホール１３Ａの内周面に接触させることで、接触荷重が小さくなり過ぎることを抑制できる。 In addition, the change point P from the first inclined portion 36a to the second inclined portion 36b is the position A1 in the longitudinal direction of the press-fit portion 30 where both outer edges of the press-fit portion 30 have the same width as the first diameter φ1. and a position A2 where the width is the same as the second diameter φ2. Therefore, when inserting the press-fit terminal 20 into the through-hole 13B having the second diameter φ2, the first inclined portion 36a is brought into contact with the inner peripheral surface of the through-hole 13B having the second diameter φ2, and the insertion force is increased. can be lowered, and an appropriate contact load that does not become excessive can be obtained. When the press-fit terminal 20 is inserted into the through hole 13A having the first diameter φ1, the contact load is reduced by bringing the second inclined portion 36b into contact with the inner peripheral surface of the through hole 13A having the first diameter φ1. can be suppressed from becoming too small.
　ところで、上記変化点Ｐが位置Ａ１に近すぎると、第２傾斜部３６ｂによる作用効果が小さくなり、第１の直径φ１のスルーホール１３Ａにプレスフィット部３０を挿入した場合の接触荷重が小さくなっていく可能性がある。また、変化点Ｐが位置Ａ２に近すぎると、第１傾斜部３６ａによる作用効果が小さくなり、第２の直径φ２のスルーホール１３Ｂにプレスフィット部３０を想定した場合の挿入力が大きくなっていく可能性がある。 By the way, if the change point P is too close to the position A1, the effect of the second inclined portion 36b is reduced, and the contact load when the press-fit portion 30 is inserted into the through hole 13A having the first diameter φ1 is reduced. There is a possibility that On the other hand, if the change point P is too close to the position A2, the effect of the first inclined portion 36a is reduced, and the insertion force becomes large when the press-fit portion 30 is assumed to be inserted into the through-hole 13B having the second diameter φ2. There is a possibility of going.
　かかる観点から、変化点Ｐは、プレスフィット部３０の長手方向において、位置Ａ１と位置Ａ２との間の下記範囲に位置することが好ましい。 From this point of view, the change point P is preferably located in the following range between the positions A1 and A2 in the longitudinal direction of the press-fit portion 30.
　図３は傾斜縁３６を示す拡大図である。同図に示すように、プレスフィット部３０の長手方向において、プレスフィット部３０の両側縁が第１の直径φ１と同じ幅になる位置Ａ１と、変化点Ｐとの距離をＬ１とする。また、プレスフィット部３０の長手方向において、プレスフィット部３０の両側縁が第２の直径φ２と同じ幅になる位置Ａ２と、変化点Ｐとの距離をＬ２とする。 FIG. 3 is an enlarged view showing the inclined edge 36. FIG. As shown in the figure, in the longitudinal direction of the press-fit portion 30, the distance between the point of change P and the position A1 where both side edges of the press-fit portion 30 have the same width as the first diameter φ1 is defined as L1. Also, in the longitudinal direction of the press-fit portion 30, the distance between the change point P and the position A2 where both side edges of the press-fit portion 30 have the same width as the second diameter φ2 is L2.
　この場合、Ｌ１／Ｌ２≧０．６となるように設定されてもよい。これにより、変化点Ｐが位置Ａ１に近すぎる位置に設定されることが抑制され、プレスフィット端子２０が第１の直径φ１のスルーホール１３Ａに挿入される際の接触荷重が小さくなり過ぎることが抑制される。 In this case, it may be set so that L1/L2≧0.6. This prevents the change point P from being set too close to the position A1, and prevents the contact load from being too small when the press-fit terminal 20 is inserted into the through hole 13A having the first diameter φ1. Suppressed.
　好ましくは、Ｌ１／Ｌ２≧０．７となるように設定されてもよく、より好ましくは、Ｌ１／Ｌ２≧１．２となるように設定されてもよい。 Preferably, it may be set so that L1/L2≧0.7, and more preferably, it may be set so that L1/L2≧1.2.
　また、Ｌ１／Ｌ２≦７となるように設定されてもよい。これにより、変化点Ｐが位置Ａ２に近すぎる位置に設定されることが抑制され、プレスフィット端子２０が第２の直径φ２のスルーホール１３Ｂに挿入される際の挿入力が過大になり難い。 Also, it may be set so that L1/L2≦7. As a result, the change point P is prevented from being set too close to the position A2, and the insertion force for inserting the press-fit terminal 20 into the through hole 13B having the second diameter φ2 is less likely to be excessive.
　好ましくは、Ｌ１／Ｌ２≦２となるように設定されてもよく、より好ましくは、Ｌ１／Ｌ２≦１．２となるように設定されてもよい。 Preferably, it may be set so that L1/L2≤2, and more preferably, it may be set so that L1/L2≤1.2.
　図４は上記プレスフィット端子２０が基板１１２に圧入されたプレスフィット端子付基板４０を示す図である。 FIG. 4 is a diagram showing a substrate 40 with press-fit terminals in which the press-fit terminals 20 are press-fitted into the substrate 112. FIG.
　プレスフィット端子付基板４０は、基板１１２とプレスフィット端子２０とを備える。プレスフィット端子２０は、コネクタ端子である。コネクタ６０は、プレスフィット端子２０と、コネクタハウジング６２とを備える。プレスフィット端子２０における基端部２６にコネクタ端子部６４が一体的に繋がっている。コネクタ端子部６４は、基端部２６に対して曲った状態（ここでは直角に曲った状態）で連なっている。コネクタ端子部６４は、基端部２６に対して直線的に連なっていてもよい。プレスフィット端子２０のうち基端部２６及びコネクタ端子部６４は、コネクタ６０のコネクタハウジング６２内に組込まれている。基端部２６はコネクタハウジング６２から出ていてもよい。コネクタ端子部６４は、コネクタハウジング６２内の空間の底から開口に向けて突出するように配置される。ここでは、コネクタハウジング６２には、複数のプレスフィット端子２０が支持されている。このため、コネクタハウジング６２内には、複数のコネクタ端子部６４が間隔をあけて並ぶ。また、コネクタハウジング６２の外面から複数のプレスフィット部３０が突出する。そして、コネクタハウジング６２の外面から突出する複数のプレスフィット部３０が同時に複数のスルーホール１１３に圧入される。複数のスルーホール１１３は、基板１１２に形成されている。複数のプレスフィット部３０が複数のスルーホール１１３に圧入された状態で、コネクタ６０が基板１１２に実装固定される。コネクタ６０が基板１１２に実装固定された物は、コネクタ付基板と称されてもよい。 The board 40 with press-fit terminals includes a board 112 and press-fit terminals 20 . The press-fit terminal 20 is a connector terminal. The connector 60 includes press-fit terminals 20 and a connector housing 62 . A connector terminal portion 64 is integrally connected to the base end portion 26 of the press-fit terminal 20 . The connector terminal portion 64 is connected to the base end portion 26 while being bent (in this case, being bent at right angles). The connector terminal portion 64 may be linearly connected to the base end portion 26 . The base end portion 26 and the connector terminal portion 64 of the press-fit terminal 20 are incorporated in the connector housing 62 of the connector 60 . Proximal end 26 may exit connector housing 62 . The connector terminal portion 64 is arranged to protrude from the bottom of the space inside the connector housing 62 toward the opening. Here, the connector housing 62 supports a plurality of press-fit terminals 20 . For this reason, a plurality of connector terminal portions 64 are arranged at intervals in the connector housing 62 . A plurality of press-fit portions 30 protrude from the outer surface of the connector housing 62 . A plurality of press-fit portions 30 protruding from the outer surface of the connector housing 62 are press-fitted into the plurality of through-holes 113 at the same time. A plurality of through holes 113 are formed in the substrate 112 . The connector 60 is mounted and fixed to the substrate 112 while the plurality of press-fit portions 30 are press-fitted into the plurality of through holes 113 . A substrate in which the connector 60 is mounted and fixed to the substrate 112 may be referred to as a connector-equipped substrate.
　基板１１２に形成される複数のスルーホール１１３は、スルーホール１３Ａ、１３Ｂのいずれであってもよいし、スルーホール１３Ａ、１３Ｂが混在していてもよい。いずれの場合であっても、各スルーホール１１３に、同じ形状のプレスフィット端子２０が圧入され得る。 The plurality of through holes 113 formed in the substrate 112 may be either the through holes 13A, 13B, or the through holes 13A, 13B may be mixed. In either case, press-fit terminals 20 having the same shape can be press-fitted into each through-hole 113 .
　［変形例］
　なお、実施形態及び各変形例で説明した各構成は、相互に矛盾しない限り適宜組合わせることができる。 [Modification]
In addition, each configuration described in the embodiment and each modified example can be appropriately combined as long as they do not contradict each other.
　［実施例］
　実施例１では、上記実施形態で説明したプレスフィット端子２０を前提として、スルーホール１３Ａ、１３Ｂにプレスフィット端子２０を挿入した場合の挿入ストロークに対する挿入力及び接触荷重の評価が示される。評価は、有限要素法を用いた３次元ＣＡＥ（Computer Aided Engineering）解析により導き出された。 [Example]
In Example 1, the press-fit terminal 20 described in the above embodiment is assumed, and the insertion force and contact load are evaluated with respect to the insertion stroke when the press-fit terminal 20 is inserted into the through holes 13A and 13B. The evaluation was derived by three-dimensional CAE (Computer Aided Engineering) analysis using the finite element method.
　比較のための例１として、図５に示すように、上記実施形態で説明したプレスフィット端子２０において、傾斜縁３６を一様な傾斜角度α１である傾斜縁２３６に変更したプレスフィット端子２２０についても、同様に挿入ストロークに対する挿入力及び接触荷重の評価を示す。 As an example 1 for comparison, as shown in FIG. 5, a press-fit terminal 220 in which the inclined edge 36 of the press-fit terminal 20 described in the above embodiment is changed to an inclined edge 236 having a uniform inclination angle α1 also shows the evaluation of the insertion force and contact load against the insertion stroke.
　なお、プレスフィット端子２０において、傾斜角度α１は傾斜角度α２より小さく、プレスフィット端子２０の傾斜縁３６における変化点Ｐは、プレスフィット部３０の長手方向において、位置Ａ１と位置Ａ２との間に位置している。第１の直径φ１は０．６５ｍｍ、第２の直径φ２は０．５５ｍｍとした。 In the press-fit terminal 20, the inclination angle α1 is smaller than the inclination angle α2. positioned. The first diameter φ1 was 0.65 mm, and the second diameter φ2 was 0.55 mm.
　実施例１の条件は、Ｌ１＝０．１８ｍｍ、Ｌ２＝０．２８ｍｍである。この場合、Ｌ１／Ｌ２は約０．６４である。 The conditions of Example 1 are L1=0.18 mm and L2=0.28 mm. In this case, L1/L2 is approximately 0.64.
　図６に評価結果が示される。図６では、評価結果は、例１の最大挿入力又は最大接触荷重に対する比率（％）によって示される。この評価結果から、第２の直径φ２の場合、実施例１の最大挿入力及び最大接触荷重は、例１の最大挿入力及び最大接触荷重よりも明らかに小さくなっていることがわかる。また、第１の直径φ１の場合、実施例１の場合の最大接触荷重は、例１の場合の最大接触荷重より僅かに小さい程度であり、最大接触荷重の過剰な低下が抑制されていることがわかる。 The evaluation results are shown in Figure 6. In FIG. 6, the evaluation results are indicated by the ratio (%) to the maximum insertion force or maximum contact load of Example 1. From this evaluation result, it can be seen that the maximum insertion force and maximum contact load of Example 1 are clearly smaller than the maximum insertion force and maximum contact load of Example 1 when the second diameter is φ2. Further, in the case of the first diameter φ1, the maximum contact load in the case of Example 1 is slightly smaller than the maximum contact load in the case of Example 1, and an excessive decrease in the maximum contact load is suppressed. I understand.
　図７に、位置Ａ１と位置Ａ２との間において変化点Ｐの位置を変更した場合の評価を示す。図７では、評価結果は、例２の最大挿入力又は最大接触荷重に対する比率（％）によって示される。本評価は、上記のように、３次元ＣＡＥ解析ではなく、有限要素法を用いた２次元ＣＡＥ解析により導き出された。 FIG. 7 shows the evaluation when the position of the change point P is changed between the positions A1 and A2. In FIG. 7, the evaluation results are indicated by the ratio (%) to the maximum insertion force or maximum contact load of Example 2. This evaluation was derived by two-dimensional CAE analysis using the finite element method instead of three-dimensional CAE analysis as described above.
　図７において実施例２から実施例６の各条件は次の通りである。実施例２では、Ｌ１＝０．３６ｍｍ、Ｌ２＝０．０５ｍｍであり、Ｌ１／Ｌ２は７．２０である。実施例３では、Ｌ１＝０．２８ｍｍ、Ｌ２＝０．１５ｍｍであり、Ｌ１／Ｌ２は約１．８７である。実施例４では、Ｌ１＝０．２０ｍｍ、Ｌ２＝０．２５ｍｍであり、Ｌ１／Ｌ２は０．８０である。実施例５では、Ｌ１＝０．１８ｍｍ、Ｌ２＝０．２８ｍｍであり、Ｌ１／Ｌ２は約０．６４である。実施例６では、Ｌ１＝０．１７ｍｍ、Ｌ２＝０．３０ｍｍであり、Ｌ１／Ｌ２は約０．５７である。比較例２に関し、図５に示すプレスフィット部２３０に対する２次元ＣＡＥ解析による評価が示される。 In FIG. 7, the conditions for Examples 2 to 6 are as follows. In Example 2, L1=0.36 mm, L2=0.05 mm, and L1/L2 is 7.20. In Example 3, L1=0.28 mm, L2=0.15 mm, and L1/L2 is about 1.87. In Example 4, L1=0.20 mm, L2=0.25 mm, and L1/L2 is 0.80. In Example 5, L1=0.18 mm, L2=0.28 mm, and L1/L2 is about 0.64. In Example 6, L1=0.17 mm, L2=0.30 mm, and L1/L2 is about 0.57. Regarding Comparative Example 2, evaluation by two-dimensional CAE analysis for the press-fit portion 230 shown in FIG. 5 is shown.
　この評価結果から、第２の直径φ２の場合、実施例２から実施例６の最大挿入力及び最大接触荷重は、明らかに例２の最大挿入力及び最大接触荷重よりも小さいことがわかる。 From this evaluation result, it can be seen that the maximum insertion force and maximum contact load of Examples 2 to 6 are clearly smaller than the maximum insertion force and maximum contact load of Example 2 when the second diameter is φ2.
　また、第１の直径φ１の場合、実施例２から実施例６の最大接触荷重は、例２と同等であるか、例２よりも大きく、接触荷重の過剰な低減が抑制されていることがわかる。 Further, in the case of the first diameter φ1, the maximum contact load in Examples 2 to 6 is equal to or larger than Example 2, and it is confirmed that excessive reduction of the contact load is suppressed. Recognize.
　よって、実施例２から実施例６では、例２よりも、第２の直径φ２のスルーホール１３Ｂに対する挿入力を下げることができ、かつ、過大とならない適切な接触荷重を得ることができること、また、第１の直径φ１のスルーホール１３Ａに対する接触荷重が小さくなり過ぎることを抑制できることがわかる。 Therefore, in Examples 2 to 6, the insertion force into the through-hole 13B having the second diameter φ2 can be reduced more than in Example 2, and an appropriate contact load that does not become excessive can be obtained. , the contact load on the through-hole 13A having the first diameter φ1 can be suppressed from becoming too small.
　特に、上記Ｌ１、Ｌ２の設定例から、Ｌ１／Ｌ２≧０．６となるように設定されることで、第１の直径φ１のスルーホール１３Ａに対する接触荷重が小さくなり過ぎることが有効に抑制され、好ましくは、Ｌ１／Ｌ２≧０．７、より好ましくは、Ｌ１／Ｌ２≧１．２となるように設定されることが効果的であることも判明した。 In particular, from the setting example of L1 and L2, setting L1/L2≧0.6 effectively prevents the contact load on the through hole 13A having the first diameter φ1 from becoming too small. It has also been found to be effective to set L1/L2≧0.7, more preferably L1/L2≧1.2.
　さらに、Ｌ１／Ｌ２≦７となるように設定されることで、プレスフィット端子２０が第２の直径φ２のスルーホール１３Ｂに挿入される際の挿入力及び接触荷重が過大になり難く、好ましくは、Ｌ１／Ｌ２≦２、より好ましくは、Ｌ１／Ｌ２≦１．２となるように設定されることが効果的であることが判明した。 Furthermore, by setting L1/L2≦7, the insertion force and contact load when the press-fit terminal 20 is inserted into the through-hole 13B having the second diameter φ2 are unlikely to be excessive. , L1/L2≦2, more preferably L1/L2≦1.2.
１２Ａ、１２Ｂ、１１２　　基板
１３Ａ、１３Ｂ、１１３　　スルーホール
１３ｆ　導電層
２０　　プレスフィット端子
２２　　先端部
２６　　基端部
３０　　プレスフィット部
３１　　アイホール
３４　　接触片
３５　　平行縁
３６、３７　　傾斜縁
３６ａ　第１傾斜部
３６ｂ　第２傾斜部
４０　　プレスフィット端子付基板
６０　　コネクタ
６２　　コネクタハウジング
６４　　コネクタ端子部
２２０　　プレスフィット端子
２３０　　プレスフィット部
２３６　　傾斜縁
Ｐ　　変化点
α１、α２　　傾斜角度
φ１　　第１の直径
φ２　　第２の直径 12A, 12B, 112 substrates 13A, 13B, 113 through hole 13f conductive layer 20 press-fit terminal 22 distal end 26 proximal end 30 press-fit portion 31 eyehole 34 contact piece 35 parallel edges 36, 37 inclined edge 36a first inclined portion 36b Second inclined portion 40 Board with press-fit terminal 60 Connector 62 Connector housing 64 Connector terminal portion 220 Press-fit terminal 230 Press-fit portion 236 Inclined edge P Change points α1, α2 Inclined angle φ1 First diameter φ2 Second diameter

Claims (6)

  1. 　先端部と、前記先端部に連なるプレスフィット部とを備え、
    　前記プレスフィット部は、アイホールを隔てて対向する２つの接触片を含み、
    　前記プレスフィット部の両外側縁は、平行姿勢で並ぶ２つの平行縁と、前記先端部から前記平行縁に向けて外向き傾斜する２つの傾斜縁とを含み、
    　前記傾斜縁は、第１傾斜部と、前記第１傾斜部よりも前記平行縁側に位置する第２傾斜部とを含み、
    　前記第２傾斜部は、前記平行縁に対して前記第１傾斜部よりも大きく傾斜する、プレスフィット端子。     comprising a tip and a press-fit portion connected to the tip,
    The press-fit portion includes two contact pieces facing each other across an eyehole,
    Both outer edges of the press-fit portion include two parallel edges arranged in a parallel posture and two inclined edges inclined outward from the tip portion toward the parallel edges,
    The inclined edge includes a first inclined portion and a second inclined portion positioned closer to the parallel edge than the first inclined portion,
    The press-fit terminal, wherein the second sloped portion slopes more than the first sloped portion with respect to the parallel edge.
  2. 　請求項１に記載のプレスフィット端子であって、
    　前記第１傾斜部から前記第２傾斜部への変化点が、前記プレスフィット部の長手方向において、前記プレスフィット部の両外側縁が前記第１の直径と同じ幅になる位置と、前記第２の直径と同じ幅になる位置との間に位置する、プレスフィット端子。     The press-fit terminal according to claim 1,
    The change points from the first inclined portion to the second inclined portion are a position in the longitudinal direction of the press-fit portion where both outer edges of the press-fit portion have the same width as the first diameter; A press-fit terminal located between 2 and a point that is as wide as the diameter.
  3. 　請求項２に記載のプレスフィット端子であって、
    　前記プレスフィット部の長手方向において、前記プレスフィット部の両外側縁が前記第１の直径と同じ幅になる位置と前記変化点との距離をＬ１、前記プレスフィット部の両外側縁が前記第２の直径と同じ幅になる位置と前記変化点との距離をＬ２としたとき、Ｌ１／Ｌ２≦７となるように設定される、プレスフィット端子。     The press-fit terminal according to claim 2,
    In the longitudinal direction of the press-fit portion, the distance between the change point and the position where both outer edges of the press-fit portion have the same width as the first diameter is L1, A press-fit terminal set so that L1/L2≦7, where L2 is the distance between the position where the width is the same as the diameter of the terminal 2 and the point of change.
  4. 　請求項２又は請求項３に記載のプレスフィット端子であって、
    　前記プレスフィット部の長手方向において、前記プレスフィット部の両外側縁が前記第１の直径と同じ幅になる位置と前記変化点との距離をＬ１、前記プレスフィット部の両外側縁が前記第２の直径と同じ幅になる位置と前記変化点との距離をＬ２としたとき、Ｌ１／Ｌ２≧０．６となるように設定される、プレスフィット端子。     The press-fit terminal according to claim 2 or 3,
    In the longitudinal direction of the press-fit portion, the distance between the change point and the position where both outer edges of the press-fit portion have the same width as the first diameter is L1, A press-fit terminal set so that L1/L2≧0.6, where L2 is the distance between the position where the width is the same as the diameter of the terminal 2 and the point of change.
  5. 　請求項１から請求項４のいずれか１項に記載のプレスフィット端子であって、
    　第１の直径のスルーホールと前記第１の直径よりも小さい第２の直径のスルーホールの両方に適応可能である、プレスフィット端子。     The press-fit terminal according to any one of claims 1 to 4,
    A press-fit terminal adaptable to both a first diameter through-hole and a second diameter through-hole smaller than said first diameter.
  6. 　スルーホールが形成された基板と、
    　前記プレスフィット部が前記スルーホールに圧入された請求項１から請求項４のいずれか１項に記載のプレスフィット端子と、
    　を備える、プレスフィット端子付基板。     a substrate in which through holes are formed;
    The press-fit terminal according to any one of claims 1 to 4, wherein the press-fit portion is press-fitted into the through hole;
    A substrate with press-fit terminals.
PCT/JP2022/032806 2021-09-08 2022-08-31 Press-fit terminal and substrate having press-fit terminal WO2023037945A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021146329 2021-09-08
JP2021-146329 2021-09-08

Publications (1)

Publication Number Publication Date
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100112874A1 (en) * 2008-10-14 2010-05-06 Ronny Ludwig Electrical conductor and method for manufacturing an electrical conductor
JP2020155268A (en) * 2019-03-19 2020-09-24 株式会社オートネットワーク技術研究所 Press-fit terminal and connector for board
WO2021106546A1 (en) * 2019-11-29 2021-06-03 株式会社オートネットワーク技術研究所 Press-fit terminal, substrate with press-fit terminal, and device
JP2021114399A (en) * 2020-01-17 2021-08-05 矢崎総業株式会社 Terminal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100112874A1 (en) * 2008-10-14 2010-05-06 Ronny Ludwig Electrical conductor and method for manufacturing an electrical conductor
JP2020155268A (en) * 2019-03-19 2020-09-24 株式会社オートネットワーク技術研究所 Press-fit terminal and connector for board
WO2021106546A1 (en) * 2019-11-29 2021-06-03 株式会社オートネットワーク技術研究所 Press-fit terminal, substrate with press-fit terminal, and device
JP2021114399A (en) * 2020-01-17 2021-08-05 矢崎総業株式会社 Terminal

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