JP2014167931A - Press-fit terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly prevent a press-fit terminal electrically connected to a through hole without soldering from being detached from the through hole due to vibration and the like at a comparatively small insertion load while restraining failures of insertion in the through hole.SOLUTION: A substrate 20 is elastically held and positioned between a tip locking part 36 curved in a plate thickness direction and a contact part 32 having width dimension larger than that of a connection part 30 and brought into contact with the substrate, and therefore, a press-fit terminal 10 is properly prevented from being detached from a through hole 22 due to vibration and the like. The tip locking part 36 is curved in the plate thickness direction. Therefore, a curve shape of the tip locking part 36 is properly set, so that the press-fit terminal 10 can be reliably prevented from being detached from the through hole 22 while restraining increase of an insertion load into the through hole 22. Also, the press-fit terminal 10 can be inserted in the through hole 22 more properly than a case when the tip is cracked, so as to restrain insertion failures due to displacement.

Description

  The present invention relates to a press-fit terminal, and more particularly, to a press-fit terminal in which an insertion failure with respect to a through hole is suppressed, an insertion load is relatively small, and an escape due to vibration or the like is appropriately prevented.

  A press-fit terminal that does not require soldering has been proposed as a connection terminal of a terminal device that electrically connects various electrical components and a power source. For example, in Patent Document 1, (a) a connection portion provided at an intermediate portion in the terminal protruding direction and electrically connected by elastically pressing both ends in the width direction to the inner wall surface of the through hole of the substrate; b) a distal-side widened portion and a proximal-side widened portion provided on both sides of the connecting portion in the terminal projecting direction and projecting to both sides of the width direction so as to position the substrate; and (c) the distal-side widened portion A tapered detail in which the width dimension from both ends to the both ends in the width direction gradually decreases toward the distal end side in the terminal projecting direction, and (d) the distal detail, the distal end side widened portion, the connecting portion, and the proximal end A longitudinal hollow portion provided across the side widened portion, and (e) a distal end coupling portion that integrally couples the tapered portions divided by the hollow portion on the distal end side in the terminal protruding direction; (F) inserted into the through hole from the tip connecting portion side. By being engaged with the through-hole in the middle of the taper, it is elastically deformed inward in the width direction due to the presence of the hollow portion, and the tip side widened portion is allowed to pass through the through-hole. There is described a press-fit terminal in which the connecting portion is pressed and electrically connected to the inner peripheral surface of the through hole by being elastically returned to the outside in the width direction. Patent Document 2 proposes a press-fit terminal in which the hollow portion is open in the terminal protruding direction, although it does not include the distal end side widened portion and the proximal end widened portion.

JP 2000-294331 A JP 2005-174654 A

  However, such a conventional press-fit terminal is inserted into the through hole by allowing elastic deformation by the hollow portion, and the connecting portions on both sides of the hollow portion are inserted through the through hole by being elastically restored. Since there is no widened portion as in Patent Document 2, sufficient positioning strength cannot always be obtained even when the widened portion exists as in Patent Document 1, for example, a vehicle terminal. When applied to the device, there was a possibility of slipping out of the through hole due to vibration or the like. In the case of Patent Document 1, since the positioning dimension between the distal end side widened portion and the proximal end widened portion is larger than the thickness of the substrate, the substrate may vibrate and come out between them. If the width dimension of the widened portion (projection dimension in the width direction) is increased, it will be difficult to pull out, but particularly when the terminal ends are connected as in Patent Document 1, a large insertion load is required. When the terminal tip is cracked as in Patent Document 2, the insertion load can be kept relatively small, but the terminal tip may interfere with the substrate due to a slight misalignment during insertion into the through hole, which may cause poor insertion. There is.

  The present invention has been made against the background of the above circumstances, and the object of the present invention is to provide a press-fit terminal that is electrically connected to the inner wall surface of the through-hole without requiring soldering. An object of the present invention is to prevent insertion failure and to prevent the insertion load from being relatively small, and to prevent the removal due to vibration or the like.

  In order to achieve such an object, the first invention is made of a metal plate material, and is inserted through a through hole having a circular cross section provided in the substrate, and an intermediate portion in the terminal protruding direction is the through hole. A press-fit terminal that is brought into contact with and electrically connected to the inner wall surface, and (a) is bent so as to bulge in the plate thickness direction of the metal plate material, and elastically deformed so as to extend in the protruding direction. A tip locking portion that is allowed to pass through the through-hole and that is locked to the opening peripheral edge of the through-hole when protruding to the opposite side and elastically restored, and (b) the tip locking portion A connecting portion that is provided on the base end side, is inserted into the through hole following the distal end locking portion, and is in contact with and electrically connected to the inner wall surface of the through hole; (c ) The connection It is provided on the base end side and has a width larger than that of the connection portion, is brought into contact with the substrate without being inserted into the through hole, and is locked to the opposite side through the through hole. An abutting portion for elastically pinching and positioning the substrate with the distal end locking portion; and (d) provided so as to bend in the thickness direction on the base end side further than the abutting portion. And a cushion part.

  According to a second aspect of the present invention, in the press-fit terminal according to the first aspect, the tip locking portion is (a) located on the center line S of the press-fit terminal, protruding in parallel with the center line S, and of the metal plate material. (B) a tapered tip introducing portion that gradually decreases in width, and (b) is provided continuously to the tip introducing portion, is inclined so as to bulge in the plate thickness direction of the metal plate, and is formed in the through hole. A first inclined portion that is elastically deformed so that the distal end locking portion extends in the protruding direction by being engaged with an opening peripheral edge of the through hole when inserted; and (c) the first inclined portion. The first inclined portion and the connecting portion are connected to each other at an inclination angle larger than that of the portion, and the first inclined portion passes through the through hole and the tip locking portion is elastic. Through hole when returning A second inclined portion that is locked to the peripheral edge of the opening and elastically sandwiches the substrate with the contact portion, and (d) is engaged with the peripheral edge of the through hole. It is characterized by being made into the said taper shape including the said front-end | tip introduction part from the middle of the said 1st inclination part.

  According to a third aspect of the present invention, in the press-fit terminal according to the first or second aspect of the invention, the connecting portion has a flat plate shape with a rectangular cross section, and the through hole has a posture parallel to the center line of the through hole. The ridge line portion of the cross section is in contact with and electrically connected to the inner wall surface of the through hole, and the diagonal dimension of the cross section is larger than the radial dimension of the through hole. It is press-fitted into the inside.

  In such a press-fit terminal, between the front end locking portion that is curved so as to bulge in the plate thickness direction, and the contact portion that is larger in width than the connection portion and is brought into contact with the substrate. Since the substrate is elastically sandwiched and positioned, even when applied to a vehicle terminal device or the like, it is appropriately prevented from coming out of the through hole due to vibration or the like. Since the tip locking part is curved in the thickness direction, setting the curved shape appropriately ensures that the insertion load into the through hole is suppressed and that the through hole is securely pulled out. Can be prevented. In addition, the tip locking part inserted into the through hole only needs to bend the metal plate into a predetermined shape, so that it can be properly inserted into the through hole compared to when the tip is cracked, misalignment, etc. Insertion failure due to is suppressed.

  In the second aspect of the invention, since the tip locking portion includes a tapered tip introduction portion that protrudes in parallel with the center line S on the center line S, poor insertion into the through hole is more appropriately suppressed. In addition, the first inclined portion on the tip side having a relatively small inclination and the second inclined portion having a relatively large inclination are engaged with the first inclined portion having a small inclination on the opening peripheral edge of the through hole. Thus, the tip locking portion is elastically deformed so as to extend in the protruding direction and is allowed to pass through the through hole, so that the through hole can be inserted with a relatively small insertion load. Then, when the first inclined portion passes through the through hole and the tip locking portion is elastically restored, the second inclined portion having a large inclination is locked to the opening peripheral edge portion of the through hole, and the contact portion and Since the substrate is elastically sandwiched between the two, it is possible to reliably prevent the substrate from coming out regardless of vibration or the like.

  In the third invention, the connecting portion has a flat plate shape with a rectangular cross section, and the ridge line portions of the four corners of the rectangular cross section are in contact with and electrically connected to the inner wall surface of the through hole having a circular cross section. Since the diagonal dimension of the rectangular cross section is larger than the diameter dimension of the through hole and is press-fitted into the through hole, an electrical connection state can be reliably ensured with a simple shape. In particular, since the ridges at the four corners of the rectangular cross section are brought into contact with the inner wall surface of the through hole over the entire length of the connecting portion, high conductive performance can be obtained as compared with a case where the ridges are brought into partial contact by elastic deformation or the like.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining an example of the terminal device which has many press fit terminals to which this invention was applied, (a) is a whole perspective view, (b) is a press fit terminal of the state inserted and connected to the through hole. (C) is a front view seen from the left side of (b), and (d) is an enlarged view of the ID-ID cross section in (c). It is a perspective view at the time of connecting a board | substrate to the terminal device of FIG. 1, (a) is the state before a connection, (b) is the state after a connection. It is a figure explaining the shape change at the time of a press fit terminal being inserted and connected to the through hole of a board | substrate. It is a side view which expands and shows the part ahead of the contact part of a press fit terminal. It is a figure explaining the manufacturing process of the terminal device of Fig.1 (a).

  The press-fit terminal of the present invention is preferably applied to a terminal device in which a plurality of press-fit terminals are arranged close to each other and are simultaneously inserted and connected to a plurality of through holes provided in the substrate. It can also be applied to a single press-fit terminal. For example, when the terminal device is used for an electric device or a power source mounted on a vehicle, the terminal device may come off from the board due to vibration or the like when the vehicle travels. To be suppressed.

  The press-fit terminal can be manufactured mainly by punching with a press using a conductive metal plate material such as a copper plate, but may be manufactured by using cutting or grinding. If necessary, a conductive film such as Ni (nickel) plating or Sn (tin) plating may be provided on the surface.

  A conductive coating such as Cu (copper) plating, copper foil, Sn (tin) plating, or a conductive cylindrical member is provided on the inner peripheral surface of the through hole of the substrate, and the printed wiring provided on the surface of the substrate In addition to being connected to the electrical circuit, the connection part of the press-fit terminal is electrically connected by being pressed.

  The portion that is brought into contact with the through hole at both ends in the width direction of the connecting portion can be an arc corresponding to the inner peripheral surface shape so as to be in surface contact with the inner peripheral surface of the through hole. A connecting portion having a rectangular cross section with respect to the through hole of the hole may be employed, and a corner portion (ridge line portion) of the rectangular cross section may be brought into line contact with the inner peripheral surface of the through hole. In addition, the axial intermediate portion of the connecting portion bulges to both sides in the width direction, and a hollow portion is provided at the center in the width direction so that both sides in the width direction are elastically pressed against the inner wall surface of the through hole. For example, various modes can be adopted as a mode in which the connecting portion is brought into contact with the inner wall surface of the through hole.

  The length of the connecting portion between the abutting portion and the tip locking portion so that the tip locking portion is locked to the opening peripheral edge of the through hole in a state where the abutting portion is in contact with the substrate The dimension is set to a dimension smaller than the thickness of the substrate. It is desirable that the tip locking portion, the connection portion, and the contact portion are continuously provided so as to be connected to each other in the protruding direction of the terminal.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1A is a perspective view showing a terminal device 8 having a large number (five in the embodiment) of press-fit terminals 10 to which the present invention is applied, and is an electric device such as an inverter mounted on a vehicle. It is used for power supplies. The press-fit terminals 10 are integrally provided at one end of a long plate-like conductive plate 12 in which a conductive metal plate is bent in an L shape. In this embodiment, the conductive plate 12 is a copper plate having a thickness of 0.4 mm, which is subjected to electrolytic luster Ni plating, and is integrated with the synthetic resin base 14 in a state in which the conductive plate 12 is arranged side by side in close proximity to each other. It is fixed. The synthetic resin base 14 has an L-shape, and is integrally insert-molded in a state in which corners (folded portions) of a large number of conductive plates 12 are embedded. The portion protruding upward functions as the press-fit terminal 10. The other end portion side of the conductive plate 12 is used as a bonding portion 16 in which one surface (upper surface) is exposed on the surface of the synthetic resin base 14 and predetermined connection terminals are integrally connected by vibration welding or the like. It is done.

  As shown in FIG. 2, the terminal device 8 is electrically connected to the board 20 when the board 20 such as a printed wiring board is relatively moved from the protruding direction of the press-fit terminal 10 (upward in FIG. 2). Connected to. 2A shows a state before connection, and FIG. 2B shows a state after connection. The substrate 20 is provided with a large number of through holes 22 corresponding to the large number of press-fit terminals 10. The press-fit terminal 10 is electrically inserted without requiring solder or the like only by being inserted into the through hole 22 thereof. The through hole 22 has a circular cross section, and an inner peripheral surface thereof is provided with a conductive coating such as Cu (copper) plating, copper foil, Sn (tin) plating, or a conductive cylinder member, and the surface of the substrate 20. The press-fit terminal 10 is electrically connected to the electrical wiring 24 such as a printed wiring.

  FIG. 5 is a schematic diagram for explaining an example of a manufacturing method of such a terminal device 8. FIG. 5 (a) is an outline drawing step in which a plurality of conductive plates 12 connected at both ends by tie bars 18 are drawn by pressing. (B) is a bending process for bending the conductive plate 12 at a substantially right angle, (c) is a resin molding process for insert molding the synthetic resin base 14, and (d) is a tie bar cutting process for cutting the tie bar 18. Thus, the terminal device 8 is obtained. The left figure in (a) to (d) is a front view, and the right figure is a right side figure, but the ratio of the vertical and horizontal dimensions in each figure is not necessarily an exact ratio.

(B) in FIG. 1 is a side view of the press-fit terminal 10 inserted and connected to the through hole 22, (c) is a front view seen from the left side of (b), and (d) is (c). FIG. 4 is an enlarged view of an ID-ID section in FIG. As is apparent from these drawings, the press-fit terminal 10 is inserted through the through hole 22 and the intermediate portion in the terminal protruding direction (upward in FIGS. 1B and 1C) is the through hole 22. It is brought into contact with the inner wall surface and electrically connected. As is clear from FIG. 1 (d), the intermediate portion has a rectangular cross section, that is, a rectangular shape, and a solid flat plate shape having a constant width dimension A, and a center line S of the press-fit terminal 10. The connecting portion 30 is inserted into the through-hole 22 in a posture parallel to the center line of the through-hole 22, and the ridges at the four corners of the rectangular cross section are shown in FIG. 1 (d). The inner wall surface of the hole 22 is contacted and electrically connected. In this embodiment, the diagonal dimension d of the rectangular cross section before insertion (connection) is larger than the diameter dimension D of the through hole 22, and the connection portion 30 is press-fitted into the through hole 22. When the width dimension of the connecting portion 30 is A, the plate thickness is B, and the dimension (radius) of the sag R by press punching is C, the diagonal dimension d is expressed by the following equation (1), and d> D is satisfied. The width dimension A is determined according to the plate thickness B.
d = √ {(AC) ² + (BC) ² } + C (1)

  A width dimension is larger than the connection portion 30 on the base end side from the connection portion 30, that is, a lower side in FIGS. 1B and 1C. A contact portion 32 to be contacted is provided continuously to the connection portion 30. Further, a cushion portion 34 that is curved in the thickness direction is provided further on the proximal end side than the contact portion 32.

  On the other hand, a distal end locking portion 36 that is curved so as to bulge in the thickness direction (rightward in FIG. 1B) is provided on the distal end side of the connection portion 30 continuously from the connection portion 30. ing. As shown in FIG. 3 (c), the tip locking portion 36 is allowed to pass through the through hole 22 while being elastically deformed so as to extend in the protruding direction of the press-fit terminal 10 (upward in FIG. 3 (c)). In addition, as shown in FIG. 3 (d), the abutting portion that is locked to the opening peripheral edge on the upper side of the through hole 22 and is brought into contact with the lower surface of the substrate 20 when it is elastically restored by protruding to the opposite side. The substrate 20 is elastically sandwiched between and positioned. 4 is an enlarged view of the front end side portion of the press-fit terminal 10 with respect to the contact portion 32. The length dimension E of the connection portion 30 is the thickness J of the substrate 20 (see FIG. 1B). And the length dimension K from the contact portion 32 to the bulging apex of the tip locking portion 36 is larger than the plate thickness J, and the portion between these length dimensions E and K is completely The substrate 20 is elastically held between the contact portion 32 and the distal end locking portion 36 by being locked to the peripheral edge of the opening of the through hole 22 before the elastic recovery. The bending width dimension F of the distal end locking portion 36 is larger than the diameter dimension D of the through hole 22, and when it is elastically restored after passing through the through hole 22, it is reliably locked to the opening peripheral edge of the through hole 22. .

  The distal end locking portion 36 is continuous with the distal end introducing portion 40 having a tapered shape (see FIG. 1 (c)) located on the extension line of the connecting portion 30, that is, on the center line S, and the distal end introducing portion 40. And a first inclined portion 42 that is inclined at an inclination angle β so as to bulge in the plate thickness direction, and is inclined in the opposite direction at an inclination angle α larger than the first inclined portion 42. A second inclined portion 44 that connects the inclined portion 42 and the connecting portion 30 is provided. Strictly speaking, the second inclined portion 44 includes an arc smoothly connected to the connecting portion 30 and an arc smoothly connected to the first inclined portion 42, and the first inclined portion 42 and the connecting portion as a whole. 30 functions as an inclined portion that connects 30, and the inclination angle α corresponds to an average inclination angle between the first inclined portion 42 and the connecting portion 30. Further, the taper shape is obtained by gradually reducing the width dimension of the conductive plate 12 as is apparent from FIG. 1 (c), and includes not only the tip introduction portion 40 parallel to the center line S but also the first inclined portion 42. It is tapered from the middle.

  FIGS. 3A and 3B are diagrams showing changes in the shape of the tip locking portion 36 when the press-fit terminal 10 is inserted into the through-hole 22 of the substrate 20 and connected thereto. FIG. 3A is before insertion, and FIG. The tip introduction part 40 is inserted into the through hole 22 and the first inclined part 42 is engaged with the opening peripheral edge of the through hole 22. Since the tip introduction part 40 has a tapered shape, insertion failure due to misalignment or the like is suppressed. When the first inclined portion 42 is engaged with the peripheral edge of the opening of the through hole 22 as shown in (b), the press-fit terminal 10 is further inserted into the through hole 22 to lock the tip. As shown in FIG. 3C, the portion 36 is elastically deformed so as to extend in the protruding direction and is allowed to pass through the through hole 22 while being flattened. The width dimension and the plate thickness of the portion other than the tapered shape of the distal end locking portion 36 are substantially the same as the width dimension A and the plate thickness B in the connection portion 30, but can be easily deformed when passing through the through hole 22. Therefore, it is possible to make it smaller than the width dimension A or thinner than the plate thickness B as required.

  When the first inclined portion 42 passes through the through hole 22 and protrudes to the opposite side, the tip locking portion 36 is gradually elastically restored while the second inclined portion 44 is in sliding contact with the opening peripheral edge of the through hole 22 ( As shown in d), the contact portion 32 is brought into contact with the lower surface of the substrate 20 to prevent further insertion, so that it is still elastically locked to the peripheral edge of the through hole 22. The substrate 20 is sandwiched between the second inclined portion 44 and the contact portion 32. (c) As shown in (c), even when the permanent engagement (plastic deformation) is caused by the deformation when the tip locking portion 36 passes through the through hole 22, the second inclined portion 44 moves through the through hole 22 as the through hole 22 passes. It is sufficient that sufficient elastic strain remains to be locked to the peripheral edge of the opening 22. The inclination angle α of the second inclined portion 44 is relatively large. In particular, the curved shape on the side that is locked to the through hole 22 in the vicinity of the connecting portion 30 has a larger inclination than the inclination angle α, and therefore has a large positioning strength. (Pullout strength) is obtained, and pull-out of the press-fit terminal 10 is appropriately suppressed.

  As described above, in the press-fit terminal 10 of this embodiment, the front end locking portion 36 that is curved so as to bulge in the plate thickness direction and the width dimension larger than the connection portion 30 are brought into contact with the substrate 20. Since the substrate 20 is elastically sandwiched and positioned between the contact portion 32 and the contact portion 32, the press-fit terminal 10 can be appropriately prevented from coming out of the through hole 22 due to vibration during vehicle travel. Since the distal end locking portion 36 is curved in the plate thickness direction, by appropriately setting the curved shape, the increase in insertion load into the through hole 22 can be suppressed while suppressing the increase in insertion load from the through hole 22. It is possible to reliably prevent the slipping out.

  Moreover, since the front end locking part 36 inserted into the through hole 22 only needs to bend the metal plate into a predetermined shape, it can be appropriately inserted into the through hole 22 compared to when the front end is cracked, Insertion failure due to misalignment or the like is suppressed. In the present embodiment, since the distal end locking portion 36 includes the tapered distal end introducing portion 40, the insertion failure with respect to the through hole 22 is more appropriately suppressed.

  Further, the distal end locking portion 36 of the present embodiment has a first inclined portion 42 on the distal end side having a relatively small inclination and a second inclined portion 44 having a relatively large inclination, and the first inclined portion having a small inclination. Since 42 is engaged with the peripheral edge of the opening of the through hole 22, the distal end locking portion 36 is elastically deformed so as to extend in the protruding direction and is allowed to pass through the through hole 22. The through hole 22 can be inserted by a load. And when the 1st inclination part 42 passes through the through hole 22, and the front-end | tip latching | locking part 36 is elastically returned, the 2nd inclination part 44 with a big inclination is latched by the opening peripheral part of the through hole 22, Since the board | substrate 20 is clamped elastically between the contact parts 32, it can prevent coming out reliably irrespective of a vibration etc. In the present embodiment, since it is locked to the through hole 22 in the vicinity of the connecting portion 30 having a larger inclination than the inclination angle α, a large positioning strength (pullout strength) is obtained, and the press-fit terminal 10 is more reliably pulled out. To be prevented.

  Further, in this embodiment, the connecting portion 30 has a flat plate shape with a rectangular cross section, and the ridge line portions at the four corners of the rectangular cross section are in contact with and electrically connected to the inner wall surface of the through hole 22 having a circular cross section. In addition, since the diagonal dimension d of the rectangular cross section is larger than the diameter dimension D of the through hole 22 and is press-fitted into the through hole 22, the electrical connection state is ensured with a simple shape. Can be secured. In particular, since the ridges at the four corners of the rectangular cross section are brought into contact with the inner wall surface of the through-hole 22 over the entire length of the connecting portion 30, high conductive performance can be obtained as compared with the case where the contact is partially made by elastic deformation or the like. .

  Incidentally, as shown in FIGS. 1B and 1C, when the press-fit terminal 10 of this embodiment connected to the through hole 22 of the substrate 20 is forcibly pulled out, the pull-out strength is examined. Whereas it was 23.3N per wire, the unloading load applied to the press-fit terminals 10 when applying vibrations of 5G and 11G at a frequency of 0 to 2000 Hz was 10.8N per wire, It was confirmed that it was sufficiently high and difficult to escape.

  As mentioned above, although the Example of this invention was described in detail based on drawing, this is an embodiment to the last, and this invention implements in the aspect which added various change and improvement based on the knowledge of those skilled in the art. Can do.

  10: Press-fit terminal 12: Conductive plate (metal plate material) 20: Substrate 22: Through hole 30: Connection part 32: Abutting part 34: Cushion part 36: Tip locking part 40: Tip introduction part 42: First inclined part 44: Second inclined portion S: Terminal center line d: Diagonal dimension D: Diameter dimension of through hole

Claims (3)

It is made of a metal plate and can be inserted through a through-hole having a circular cross section provided on the substrate, and an intermediate portion in the terminal protruding direction is brought into contact with and electrically connected to the inner wall surface of the through-hole. A press-fit terminal,
When the metal plate is bent so as to bulge in the plate thickness direction, elastically deformed so as to extend in the protruding direction and allowed to pass through the through hole, and protrudes to the opposite side to be elastically restored. A tip locking portion locked to the opening peripheral edge of the through hole;
A connection provided on the base end side of the distal end locking portion, inserted into the through hole following the distal end locking portion, and brought into contact with and electrically connected to the inner wall surface of the through hole. And
It is provided on the base end side with respect to the connecting portion and has a width dimension larger than that of the connecting portion, is brought into contact with the substrate without being inserted into the through hole, passes through the through hole, and is engaged on the opposite side. An abutting portion for elastically holding and positioning the substrate between the tip locking portion to be stopped;
A cushion part provided to bend in the thickness direction on the proximal side further than the contact part;
A press-fit terminal characterized by comprising: The tip locking portion is
A tapered tip introducing portion located on the center line S of the press-fit terminal, protruding in parallel with the center line S, and gradually narrowing the width dimension of the metal plate material;
Provided continuously to the tip introduction part, inclined so as to bulge in the thickness direction of the metal plate material, and engaged with the opening peripheral edge of the through hole when inserted into the through hole. Accordingly, the first inclined portion that elastically deforms so that the distal end locking portion extends in the protruding direction,
The first inclined portion is inclined in the opposite direction at an inclination angle larger than that of the first inclined portion to connect the first inclined portion and the connecting portion, and the first inclined portion passes through the through hole and is engaged with the tip end portion. A second inclined portion that is locked to the opening peripheral edge of the through-hole when the stopper is elastically restored and elastically sandwiches the substrate with the contact portion;
The taper shape including the tip introduction part from the middle of the first inclined part engaged with the opening peripheral part of the through hole is provided. Press-fit terminal. The connecting portion has a flat plate shape with a rectangular cross section, and is inserted into the through hole in a posture parallel to the center line of the through hole, and a ridge line portion of the cross section is an inner wall surface of the through hole. The diagonal dimension of the cross section is larger than the radial dimension of the through hole, and is press-fitted into the through hole. Press-fit terminal.

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