JP2015207465A - Connector terminal for press-fitting and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector terminal for press-fitting which has high mass-productivity and is capable of attaining high contact reliability by securing stable contact with an inner peripheral surface of a through-hole, and a manufacturing method thereof.SOLUTION: A connector terminal 100 for press-fitting includes a contact part 20 which is formed by processing one metal plate having elasticity and in which contact pieces 211-214 in contact with the through-hole are arranged side by side in a plate width direction X. The contact part 20 includes: a contact piece 22 for the plate width direction in which contact pieces 211 and 212 in both end portions in the plate width direction X rise in a plate thickness direction Y and are expanded in the plate width direction X; and a contact piece 23 for the plate thickness direction in which contact pieces 213 and 214 held between the contact pieces 22 for the plate width direction are expanded in the plate thickness direction Y and opposite to the inner peripheral surface of the through-hole. The contact piece 22 for the plate width direction and the contact piece 23 for the plate thickness direction are formed oppositely to the inner peripheral surface of the through-hole, thereby attaining stable contact.

Description

  The present invention relates to a press-fit connector terminal used by being inserted into a conductive through hole of a printed circuit board and a method for manufacturing the same.

  Conventionally, there are various types of press-fit connector terminals such as needle eye, C-type, N-type, and Σ-type in cross-section of the contact portion of the terminal. A conventional press-fit connector terminal described in 1) is known.

  The board connecting plate terminals 1000 described in Patent Document 1 shown in FIG. 22 are formed on both sides of a flex space 1002 formed in the board thickness direction of the board press-fitting portion 1001 to be press-fitted into the through hole of the circuit board. An elastic contact portion 1003 that elastically deforms in the width direction and a plurality of leaf spring contact pieces 1004 that are formed in the flexure space 1002 and elastically deform in the plate thickness direction are provided.

  The conductive terminal (press-fit contact 1100) described in Patent Document 2 shown in FIGS. 23A and 23B extends widely in a planar manner from the elongated tip portion 1101 and the tip portion 1101, and a through hole 1102 is formed in a part thereof. The joints 1105 and 1106 of the press-fit portions 1103 and 1104 that have the press-fit portions 1103 and 1104 and are joined to the inner surface of the through-hole 1110 pass through the center line in the cut plane perpendicular to the longitudinal center line. It is bent point-symmetrically with respect to the center point, and is joined at two joining surfaces 1111 and 1112 that face each other in the diameter direction of the through hole 1110.

  A press-fit connector terminal 1200 described in Patent Document 3 shown in FIG. 24 is formed by performing a predetermined bending process on a single metal plate having elasticity. This press-fit connector terminal 1200 includes a pin portion 1201 having a U-shaped cross section, a middle shaft portion 1202 provided on the tip side thereof, and a plurality of contact pieces 1203 having a square shape in the longitudinal direction. And a contact portion 1204 formed so as to surround the central shaft portion 1202 in a state of being protruded outward along the longitudinal direction of 1202. On the distal end side and the proximal end side of the plurality of contact pieces 1203 constituting the contact portion 1204, continuous portions 1205 and 1206 having a C-shaped cross section surrounding the central shaft portion 1202 are provided.

JP 2005-310626 A JP 2008-59812 A JP 2013-65543 A

  However, in the board connecting plate terminal 1000 described in Patent Document 1, a plurality of leaf spring contact pieces 1004 elastically deformed in the plate thickness direction are in surface contact with the inner peripheral surface of the through hole, but elastically deformed in the plate width direction. The elastic contact portion 1003 that makes contact with the inner peripheral surface of the through-hole at the end face due to the plate thickness.

  Further, in the press-fit contact 1100 described in Patent Document 2, the joint portions 1105 and 1106 of the press-fit portions 1103 and 1104 are bent point-symmetrically and are in contact with the joint surfaces 1111 and 1112 of the through hole 1110. However, as in Patent Document 1, they are in contact at the end face due to the plate thickness.

  Since the end surface in contact with the inner peripheral surface of the through hole is a fracture surface that can be formed by punching a metal plate, rough unevenness is formed along the punching direction. Therefore, when a conventional press-fit connector terminal is inserted into the through hole, the broken surface may come into contact with the inner peripheral surface of the through hole, so that the through hole may be damaged or cracked.

  Furthermore, in the press-fit connector terminal 1200 described in Patent Document 3, since each contact piece comes into surface contact with the inner peripheral surface of the through hole from the inside, stable contact can be obtained. However, in the press-fit connector terminal 1200 described in Patent Document 3, the contact portion 1204 is formed by bending the continuous portions 1205 and 1206 provided on the distal end side and the proximal end side of the contact piece 1203 into a C-shaped cross section. Therefore, in order for the contact piece 1203 to contact the inner peripheral surface of the through hole, it is necessary to secure the length of the extended state of the connecting portions 1205 and 1206 nearly three times the diameter of the through hole.

When a large number of press-fit connector terminals 1200 are taken from the strip-shaped metal plate, the press-fit connector terminals 1200 in a developed state are arranged in a row along the length direction of the strip-shaped metal plate (the arrangement direction of the press-fit connector terminals). Punch sequentially.
Therefore, if the dimension of the press-fit connector terminal 1200 in the plate width direction is large, the quantity when a large number of the connector terminals 1200 are taken decreases, resulting in a decrease in mass productivity.
Further, since the contact portion 1204 is folded back at the folded-back portion 1207 and is disposed so as to surround the central shaft portion 1202, the contact portion 1204 is also disposed in the width direction of the belt-shaped metal plate (the length direction of the press-fit connector terminal itself) The pin portion 1201, the central shaft portion 1202, and the contact portion 1204 are necessary, and when manufacturing the press-fit connector terminal 1200, it is necessary to prepare a wide band-shaped metal plate.

  Therefore, the present invention provides a press-fit connector terminal capable of achieving high contact reliability and a method for manufacturing the same, because it has high mass productivity and can ensure stable contact with the inner peripheral surface of the through hole. Objective.

  The present invention is a press-fit connector terminal that is formed by processing one metal plate having elasticity and is inserted into a through hole formed in a printed circuit board, and is in contact with the through hole. The contact portion where the pieces are arranged in the plate width direction is such that the contact pieces at both ends in the plate width direction stand up in the plate thickness direction and protrude in the plate width direction to face the inner peripheral surface of the through hole. And one or more contact pieces sandwiched between the contact pieces for the plate width direction project in the plate thickness direction and include a contact piece for the plate thickness direction facing the inner peripheral surface of the through hole. It is characterized by that.

According to the connector terminal for press fit of the present invention, the contact piece for the plate thickness direction protrudes in the plate thickness direction and not only contacts the inner peripheral surface of the through hole in the plate thickness direction of the contact portion, The plate-width-direction contact pieces stand up in the plate-thickness direction, protrude in the plate-width direction, and are in surface contact with the inner peripheral surface of the through hole in the plate-width direction of the contact portion. Therefore, it is possible to ensure stable contact without the contact piece being damaged or cracked in the through hole. Further, since the contact portion is formed by contact pieces arranged in the plate width direction, and the plate width direction contact piece is formed upright, the contact portion is from the press-fit connector terminal described in Patent Document 3, The plate width in the unfolded state can be reduced. Further, since the contact portion is not formed by folding, the width of the unfolded band-shaped metal plate (the length direction of the press-fit connector terminal itself) can be shortened.
Here, “protruding” means a state in which the contact surface side of the contact piece bulges into a convex shape by bending or projecting.

  The plate width direction contact pieces preferably have standing directions opposite to each other. When the standing directions of the plate width direction contact pieces are opposite to each other, the deviation of the contact position of the plate width direction contact pieces to the through hole can be reduced.

  It is desirable that the plate width direction contact pieces have the same standing direction. If the standing direction of the contact piece for the plate width direction is the same direction, the contact piece for the plate width direction is a through hole on either side of the plate thickness direction contact piece on one side or the other side of the plate thickness direction contact piece. In order to firmly support the entire press-fit connector terminal of the present invention, the plate width direction contact piece can maintain a balance with the contact pressure by the plate thickness direction contact piece.

  In the plate thickness direction contact pieces, it is desirable that the protruding directions of adjacent contact pieces are opposite to each other. When the protruding directions of the plate thickness direction contact pieces are opposite to each other, the deviation in the contact position of the plate thickness direction contact pieces to the through hole can be reduced.

  The standing direction of the contact piece for the plate width direction and the protruding direction of the contact piece for the plate thickness direction alternate from the contact piece for the plate width direction on one end side toward the contact piece for the plate width direction on the other end side. The opposite direction is desirable. Thus, by erecting the contact piece for the plate width direction and projecting the contact piece for the plate thickness direction, the contact position to the through hole can be made even and less biased.

  The plate width direction contact piece is preferably provided with an arm portion between the plate thickness direction contact piece. By bending the arm portion and bringing the plate width direction contact piece upright, the elastic force when the plate width direction contact piece contacts the inner peripheral surface of the through hole can be improved.

  It is desirable that a tip end portion of the contact portion is provided with a taper that becomes narrower as the plate width goes in the insertion direction. Even if the contact portion is displaced with respect to the through hole, the center axis of the press-fit connector terminal is moved in the direction of the center of the through hole due to the tip, and the insertion direction can be corrected.

  A press-fit connector terminal according to the present invention is a method for manufacturing a press-fit connector terminal to be inserted into a through-hole formed in a printed circuit board, and is obtained by punching out a single metal plate having elasticity. Among the contact pieces arranged in the width direction, the contact pieces at both ends in the plate width direction are erected in the plate thickness direction and protruded in the plate width direction so as to face the inner peripheral surface of the through hole. A step of forming a contact piece, and one or more contact pieces sandwiched between the contact pieces for the plate width direction are projected in the plate thickness direction to face the inner peripheral surface of the through hole. Can be manufactured by a method for manufacturing a press-fit connector terminal including the step of forming the connector.

  According to the connector terminal for press-fit of the present invention, the contact piece for the plate width direction and the contact piece for the plate thickness direction are formed by the contact pieces arranged in the plate width direction, each facing the inner peripheral surface of the through hole. Since it contacts, the board | plate width (length direction of the press-fit connector terminal itself) of the unfolded strip | belt-shaped metal plate can be narrowed, and the stable contact can be ensured to a through hole. Therefore, the present invention has high mass productivity and can secure a stable contact state with the inner peripheral surface of the through hole, thereby achieving high contact reliability.

It is the perspective view which looked at the connector terminal for press fits concerning Embodiment 1 of the present invention from the upper part. It is the perspective view which looked at the connector terminal for press fits shown in FIG. 1 from the downward direction. It is a front view of the connector terminal for press fits shown in FIG. It is a figure for demonstrating the manufacturing method of the connector terminal for press fitting shown in FIG. 1, and is a perspective view of the state which stamped the metal plate and formed the convex part for latching. It is a front view of the connector terminal for press fits of the unfolding state shown in FIG. FIG. 5 is a partially enlarged perspective view of a state in which a contact piece is protruded from the press-fit connector terminal in the unfolded state shown in FIG. 4. It is a front view of the state which made the contact piece shown in FIG. 6 protrude. FIG. 7 is a partially enlarged perspective view of a state in which a contact piece located at both ends is raised to form a plate width direction contact piece from a state in which the contact piece shown in FIG. 6 protrudes. It is a front view of the state which formed the contact piece for board width directions shown in FIG. It is a figure of the state which aligned the connector terminal for press fits shown in FIG. 1 to the through hole. It is the figure which looked at the connector terminal for press fits shown in FIG. 10 from the through-hole side. It is a figure of the state which inserted the connector terminal for press fits shown in FIG. 10 in the through hole. It is the figure which looked at the connector terminal for press fits shown in FIG. 12 from the through-hole side. It is the perspective view which looked at the connector terminal for press-fit which concerns on Embodiment 2 of this invention from upper direction. FIG. 15 is a partially enlarged perspective view of the press-fit connector terminal shown in FIG. 14. It is a figure of the state which inserted the connector terminal for press fits shown in FIG. 14 in the through hole. It is the figure which looked at the connector terminal for press fits shown in FIG. 16 from the through-hole side. It is the perspective view which looked at the connector terminal for press-fit which concerns on Embodiment 3 of this invention from upper direction. FIG. 19 is a partially enlarged perspective view of the press-fit connector terminal shown in FIG. 18. It is a figure of the state which inserted the connector terminal for press fits shown in FIG. 18 in the through hole. It is the figure which looked at the connector terminal for press fits shown in FIG. 20 from the through-hole side. It is a perspective view which shows the board terminal for board connection of patent documents 1. It is a perspective view which shows the electroconductive terminal (contact for press fit) of patent document 2. FIG. FIG. 23B is a diagram showing a state where the press-fit contact shown in FIG. 23A is inserted into the through hole. It is a perspective view which shows the connector terminal for press fits described in patent document 3.

(Embodiment 1)
A press-fit connector terminal according to Embodiment 1 of the present invention will be described with reference to the drawings.
The press-fit connector terminal 100 according to the first embodiment shown in FIGS. 1 to 3 is formed by processing one band-shaped metal plate having elasticity.
The press-fit connector terminal 100 includes a tapered portion 10 located at a tip portion, a contact portion 20 that contacts a conductive through hole of a printed circuit board, and a terminal main body portion 30.

The tapered portion 10 is formed in a substantially triangular shape, and an inclined portion 10a is formed so that the plate width gradually becomes narrower in the insertion direction F into the through hole.
The contact portion 20 is formed by contact pieces 21 arranged in the plate width direction X.
The contact pieces 211 and 212 at both ends in the plate width direction X stand up and protrude in the plate width direction X to form respective plate width direction contact pieces 22. The plate width direction contact pieces 22 have their standing directions opposite to each other. That is, one plate width direction contact piece 22 by the contact piece 211 stands on one side, and the other plate width direction contact piece 22 by the contact piece 212 stands on the other side.
Here, one side means one side in the plate thickness direction with the plate width direction of the press-fit connector terminal 100 as the center. The other side is the opposite side of one side and the other side in the thickness direction.

One or more contact pieces 21 sandwiched between the plate width direction contact pieces 22 protrude in the plate thickness direction Y to form respective plate thickness direction contact pieces 23. In the plate thickness direction contact piece 23, the standing direction and the protruding direction of adjacent contact pieces 21 including the plate width direction contact piece 22 are opposite to each other.
In the first embodiment, the plate-thickness direction contact piece 23 is provided with a pair of contact pieces 213 and 214, and the protruding directions of adjacent contact pieces 213 and 214 are opposite to each other.
The plate thickness direction contact piece 23 (contact piece 213) on the plate width direction contact piece 22 (contact piece 211) side standing on one side is a plate standing on the other side with the protruding direction directed to the other side. The plate thickness direction contact piece 23 (contact piece 214) on the width direction contact piece 22 (contact piece 212) side has a protruding direction directed to one side.

Thus, the contact pieces 211 to 214 are bent to form the plate width direction contact piece 22 and the plate thickness direction contact piece 23, so that the contact portion 20 is the center of the press-fit connector terminal 100. The axis L is formed symmetrically with respect to the point of symmetry (center of symmetry) so that the same positional relationship is obtained even if the axis L is reversed 180 degrees.
An arm 24 is provided between the plate width direction contact piece 22 and the plate thickness direction contact piece 23.

The terminal main body 30 includes a pin portion 31 provided on the opposite side of the contact portion 20, a shoulder portion 32 provided between the contact portion 20 and the pin portion 31, and a portion near the shoulder portion 32 of the pin portion 31. A press-fit locking portion 33 provided on both side edges of the portion and a locking convex portion 34 protruding in the plate thickness direction Y are formed.
The pin portion 31 is formed in a needle shape and is inserted into the printed circuit board. The shoulder portion 32 is a rectangular protrusion protruding from the plate width of the pin portion 31. The press-fit locking portion 33 is formed in a wedge shape so as to protrude in a pair of left and right in the plate width direction X. Further, the locking convex portion 34 is formed to protrude in the plate thickness direction Y at a position where the press-fitting locking portion 33 of the terminal main body portion 30 is formed.

  When an electrical connector (not shown) is formed by inserting the pin portions 31 of the plurality of press-fit connector terminals 100 into insertion holes (not shown) of an insulating resin housing (not shown), respectively. The press-fit locking portion 33 and the locking projection 34 bite into the inner peripheral surface of the insertion hole and exert a locking action.

A method of manufacturing the press-fit connector terminal 100 according to Embodiment 1 of the present invention configured as described above will be described with reference to the drawings.
First, as shown in FIGS. 4 and 5, the band-shaped metal plate is punched out based on the contour shapes of the tapered portion 10, the contact portion 20 before bending, and the terminal main body portion 30. In the terminal main body 30 shown in FIGS. 4 and 5, the locking convex portion 34 is formed by pressing the terminal main body 30 from the other side and projecting it to the opposite side.

  At this time, the contact portion 20 before bending is between the contact piece 22 for the plate width direction and the contact piece 23 for the plate thickness direction (between the contact piece 211 and the contact piece 213, between the contact piece 212 and the contact piece 214). The slits 25 are formed by punching, so that arm portions 24 are formed between both end portions of the plate width direction contact piece 22 and both end portions of the plate thickness direction contact piece 23. .

Next, as shown in FIGS. 6 and 7, the contact pieces 213 and 214 are bent and protruded in the plate thickness direction Y by bending. For example, the protruding directions of the contact pieces 213 and 214 are opposite to each other by the contact piece 214 protruding to one side and the contact piece 213 protruding to the other side.
The contact pieces 211 and 212 are also bent and projected in the plate thickness direction Y by bending. The protruding directions of the contact pieces 211 and 212 are opposite to each other by the contact piece 211 protruding to the other side and the contact piece 212 protruding to one side. The degree of bending of the contact pieces 211 and 212 is made smaller than that of the contact pieces 213 and 214.
As the contact pieces 211 to 214 protrude outward, the contact surface is formed into a convex curved surface.

  The contact pieces 213 and 214 are connected in the state shown in FIG. 4 and FIG. 5, but the contact pieces 213 and 214 in the connected state are pressed and separated in opposite directions in the plate thickness direction Y, respectively. Protrude.

As shown in FIGS. 8 and 9, the contact pieces 211 and 212 are erected in the plate thickness direction Y orthogonal to the plate width direction X to form the plate width direction contact pieces 22. For example, the contact piece 211 stands on one side and the contact piece 212 stands on the other side, so that the contact surfaces 211 s and 212 s face outward in the plate width direction X, respectively.
Through these steps, the press-fit connector terminal 100 can be manufactured.

  In the first embodiment, the plate width direction contact piece 22 protrudes and the plate width direction contact piece 22 protrudes, and then the plate width direction contact piece 22 stands up. After the direction contact piece 22 is first raised, the plate thickness direction contact piece 23 may be projected.

Next, a state when the press-fit connector terminal 100 is connected to the printed circuit board will be described with reference to the drawings.
As shown in FIGS. 10 and 11, the center axis L of the press-fit connector terminal 100 is aligned with the center of the through-hole H formed in the printed circuit board P, and the press-fit connector terminal is located above the through-hole H. Position 100.

  Then, the press-fit connector terminal 100 is lowered straight, and the tapered portion 10 is first inserted into the through hole H. For example, when the position of the center of the through hole H and the center axis L of the connector terminal 100 for press-fit is shifted, the contact portion 20 is shifted with respect to the through hole H, and the inclined portion 10a of the tapered portion 10 becomes the through hole. Even if it contacts the peripheral edge of H, the central axis L of the press-fit connector terminal 100 is moved in the center direction of the through hole H by the inclined portion 10a of the tapered portion 10, and the insertion direction can be corrected.

  As shown in FIGS. 12 and 13, when the contact portion 20 of the press-fit connector terminal 100 is inserted into the through hole H, the arm portion 24 of the plate width direction contact piece 22 is bent, and the contact surface 211 s and the contact surface are contacted. The surface 212s contacts the inner peripheral surface S of the through hole H in the plate width direction X of the contact portion 20 in a state of facing the surface 212s. Further, the contact piece 23 for the plate thickness direction is in elastic contact with the contact surface 213 s and the contact surface 214 s in contact with the inner peripheral surface S of the through hole H in the plate thickness direction Y of the contact portion 20.

  Thus, according to the press-fit connector terminal 100, the plate thickness direction contact piece 23 protrudes in the plate thickness direction Y and faces the inner peripheral surface S of the through hole H in the plate thickness direction Y of the contact portion 20. The plate width direction contact piece 22 rises in the plate thickness direction Y and protrudes in the plate width direction X to contact the inner peripheral surface of the through hole H in the plate width direction X of the contact portion 20. Since the surface contact is opposed to S, stable contact can be ensured without damaging the through hole H or making a crack. Accordingly, the press-fit connector terminal 100 can ensure a stable contact with the inner peripheral surface S of the through hole H, thereby achieving high contact reliability.

  Further, since the contact portion 20 is formed by the contact pieces 211 to 214 arranged in the plate width direction X and the plate width direction contact piece 22 is formed upright, the connector terminal for press fit described in Patent Document 3 is used. Thus, the dimension in the plate width direction can be reduced. Therefore, a larger number of the press-fit connector terminals 100 can be obtained than the press-fit connector terminals described in Patent Document 3 with respect to the length direction of the belt-shaped metal plate (the arrangement direction of the press-fit connector terminals). . Furthermore, since the contact portion 20 is not folded back, the width of the expanded metal strip (the length direction of the press-fit connector terminal itself) is shorter than that of the press-fit connector terminal described in Patent Document 3. can do. Accordingly, the press-fit connector terminal 100 can use a metal plate that is narrower than the press-fit connector terminal described in Patent Document 3 in the width direction of the belt-like metal plate. Thus, the press-fit connector terminal 100 has excellent mass productivity.

As shown in FIGS. 8 and 9, the contact portion 20 is formed of four contact pieces 211 to 214. In the plate width direction contact piece 22, one contact piece 211 stands on one side and the other contact piece 212 stands on the other side opposite to the one side. Furthermore, the contact piece 213 of the plate thickness direction contact piece 23 adjacent to the contact piece 211 of the plate width direction contact piece 22 standing on one side protrudes to the other side, and the plate width direction stands on the other side. The contact piece 214 of the plate thickness direction contact piece 23 adjacent to the contact piece 212 of the contact piece 22 protrudes to one side.
In this way, the rising direction of the contact piece 22 for the plate width direction and the protruding direction of the contact piece 23 for the plate thickness direction are the other end side from the contact piece 22 for the plate width direction (contact piece 211) standing on one end side. Toward the plate width direction contact pieces 22 (contact pieces 212) standing upright. Therefore, as shown in FIGS. 12 and 13, the contact with the inner peripheral surface S of the through hole H is made from four directions, so that stable contact can be achieved evenly and without deviation.

(Embodiment 2)
A press-fit connector terminal according to Embodiment 2 of the present invention will be described with reference to the drawings. 14 to FIG. 17, the same components as those in FIG. 1 and FIG. 2, FIG. 8, FIG. 12, and FIG.

The press-fit connector terminal 100 </ b> A according to the second embodiment shown in FIGS. 14 and 15 has a contact portion 20 </ b> A with three contact pieces 21.
In the contact portion 20A, the contact pieces 211 and 212 at both ends in the plate width direction X stand up in the same direction to form the respective plate width direction contact pieces 22 and the plate width direction contact pieces 22. One contact piece 214 located between the plate width direction contact pieces 22 protrudes in the direction opposite to the standing direction of the plate width direction contact piece 22 to form the plate thickness direction contact piece 23.

Thus, the rising direction of the plate width direction contact piece 22 and the protruding direction of the plate thickness direction contact piece 23 are the plate width direction on the other end side from the plate width direction contact piece 22 (contact piece 211) on the one end side. The opposite directions are alternately directed toward the contact piece 22 (contact piece 212). Therefore, even if the plate thickness direction contact piece 23 is formed by one contact piece 214 and protrudes on one side, both the plate width direction contact pieces 22 (contact pieces 211 and 212) stand up on the other side. Therefore, as shown in FIGS. 16 and 17, it comes into contact with the inner peripheral surface S of the through hole H from three directions. Therefore, the press-fit connector terminal 100A can achieve stable contact with the through hole H evenly and without unevenness.
Therefore, the press-fit connector terminal 100A can ensure a stable contact without damaging the through hole H or making a crack.

  Further, the plate width direction contact piece 22 contacts the through hole H on the other side in the plate thickness direction Y on both sides of the plate thickness direction contact piece 23 to firmly support the entire press-fit connector terminal 100A. Therefore, the plate width direction contact piece 22 can maintain a balance with the contact pressure by the plate thickness direction contact piece 23.

(Embodiment 3)
A press-fit connector terminal according to Embodiment 3 of the present invention will be described with reference to the drawings. 18 to 21, the same components as those in FIGS. 1, 2, 8, 12, and 13 are denoted by the same reference numerals and description thereof is omitted.
The press-fit connector terminal 100B according to the third embodiment shown in FIGS. 18 and 19 has a contact portion 20B with three contact pieces 21.
In the contact portion 20B, the contact pieces 211 and 212 at both ends in the plate width direction X stand up in the same direction, and the respective plate width direction contact pieces 22 are formed. The contact pieces 214 and 215 projecting in the direction opposite to the rising direction of the piece 22 and the contact pieces 213 projecting in the same direction as the standing direction of the contact pieces 22 on both sides of the plate width direction are used. 23 is formed.

Thus, the rising direction of the plate width direction contact piece 22 and the protruding direction of the plate thickness direction contact piece 23 are the plate width direction on the other end side from the plate width direction contact piece 22 (contact piece 211) on the one end side. The opposite directions are alternately directed toward the contact piece 22 (contact piece 212). Therefore, even if the plate thickness direction contact piece 23 is formed by the three contact pieces 21 and the protruding directions of the adjacent contact pieces 213 to 215 are opposite to each other, the plate width direction contact piece 22 (contact piece 211). , 212) are standing on the other side, and are in contact with the inner peripheral surface S of the through hole H substantially radially as shown in FIGS. Therefore, the press-fit connector terminal 100B can achieve stable contact with the through hole H evenly and without unevenness.
Accordingly, the press-fit connector terminal 100B can ensure a stable contact without damaging the through hole H or making a crack.

  Further, the plate width direction contact piece 22 contacts the through hole H on the other side in the plate thickness direction Y on both sides of the plate thickness direction contact piece 23 to firmly support the entire press-fit connector terminal 100B. Therefore, the plate width direction contact piece 22 can maintain a balance with the contact pressure by the plate thickness direction contact piece 23.

  In the first to third embodiments, the number of contact pieces 21 as the thickness direction contact piece 23 is one to three. However, the contact pieces 23 for the plate thickness direction may be four or more contact pieces 21. Even in that case, it is desirable that the protruding directions of the adjacent contact pieces 21 be opposite to each other because the contact surfaces can be uniformly contacted with the inner peripheral surface of the through hole.

  The press-fit connector terminal according to the present invention can be widely used in the electrical / electronic equipment industry, the automobile industry, and the like as a member to be inserted into a through hole of a printed circuit board.

100, 100A, 100B Press-fit connector terminal 10 Tip 10a Inclined portion 20, 20A, 20B Contact portion 21 Contact piece 211, 212, 213, 214 Contact piece 211s, 212s, 213s, 214s Contact surface 22 Contact for plate width direction Piece 23 Plate thickness direction contact piece 24 Arm portion 25 Slit 30 Terminal body portion 31 Pin portion 32 Shoulder portion 33 Press-fit locking portion 34 Locking convex portion F Insertion direction L Center axis X Plate width direction Y Plate thickness direction P Print Circuit board H Through hole S Inner peripheral surface

Claims (8)

A press-fit connector terminal formed by processing one metal plate having elasticity, and inserted into a through hole formed in a printed circuit board,
The contact portion where the contact pieces contacting the through hole are arranged in the plate width direction is
Contact pieces at both ends in the plate width direction stand up in the plate thickness direction, project in the plate width direction, and contact pieces for the plate width direction facing the inner peripheral surface of the through hole,
One or more contact pieces sandwiched between the plate width direction contact pieces protrude in the plate thickness direction and have a plate thickness direction contact piece facing the inner peripheral surface of the through hole. .   The press-fit connector terminal according to claim 1, wherein the plate width direction contact pieces have standing directions opposite to each other.   The press-fit connector terminal according to claim 1, wherein the plate width direction contact pieces have the same standing direction.   4. The press-fit connector terminal according to claim 2, wherein in the plate thickness direction contact pieces, the protruding directions of adjacent contact pieces are opposite to each other. 5.   The standing direction of the contact piece for the plate width direction and the protruding direction of the contact piece for the plate thickness direction alternate from the contact piece for the plate width direction on one end side toward the contact piece for the plate width direction on the other end side. 2. The press-fit connector terminal according to claim 1, wherein the connector terminal is in a direction opposite to the first direction.   The press-fit connector terminal according to claim 1, wherein the plate width direction contact piece is provided with an arm portion between the plate thickness direction contact piece.   The press-fit connector terminal according to claim 1, wherein a tip end portion of the contact portion is provided with a taper that becomes narrower as the width of the plate approaches the insertion direction. A method for manufacturing a press-fit connector terminal to be inserted into a through-hole formed in a printed circuit board,
By punching out one elastic metal plate, among the contact pieces arranged in the plate width direction, the contact pieces at both ends in the plate width direction are raised in the plate thickness direction and protruded in the plate width direction. Forming a plate thickness direction contact piece facing the inner peripheral surface of the through hole;
A step including forming one or more contact pieces sandwiched between the plate width direction contact pieces in the plate thickness direction to form a plate thickness direction contact piece facing the inner peripheral surface of the through hole. Manufacturing method of connector terminal for fitting.

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