CN103311708B - Press-fit type connector terminal - Google Patents

Abstract

A press-fit type connector terminal includes a pin portion having a U-shaped or quadrilateral cross-section, and a contact portion at a front end of the pin portion. The contact portion includes: a contact piece surrounding an imaginary centerline parallel to a longitudinal axis of the pin portion; and a slit formed at a portion of the contact piece and extending substantially parallel to the imaginary centerline . The connector terminals are formed from a single bent metal plate with elasticity.

Description

Press-fit connector terminals

technical field

The present invention relates to a press-fit type connector terminal to be inserted into a conductive via hole formed through a printed circuit board.

Background technique

Various press-fit type connector terminals have been proposed. For example, they have a terminal contact portion having a cross-section in the shape of an eye of a needle, a C-shape, an N-shape, or a Σ-shape.

Japanese Patent Application Publication No. 2004-134275 has proposed a connection terminal including a head to which a cable is connected and a body to be inserted into a through-hole formed through a substrate. The main body is formed at the center with a hole extending in the lengthwise direction thereof, and the hole is formed with a plurality of slits extending from the inner wall of the main body to the outer wall. The hole is filled with conductive adhesive.

Japanese Patent Application Publication No. 2007-157469 has proposed a press-fit type terminal including a press-fit portion, a terminal base and a terminal plug. The press-fit portion includes a contact piece having a shape capable of being easily contacted with the through hole and a compression portion made of an elastic material. The compression portion is inserted into the opening of the contact, and the compression portion applies elastic force to the contact so that the contact is pressed against the through hole.

International Publication WO2006/077827 has proposed a press-fit terminal including a press-fit contact portion that makes electrical contact with a conductive via formed through a printed circuit board. An underplating or underplatings are formed on the surface of the base material of the press-fit contact portion. A layer composed of an alloy of Sn and a plating metal constituting the uppermost plating layer is formed on the uppermost plating layer, and non-alloyed Sn is mixed in the outermost layer of the alloy layer.

Because the above-mentioned conventional press-fit type connector terminal is designed to have an outer diameter larger than the inner diameter of a through-hole formed through a printed circuit board, and has a press-fit portion with low elasticity to be inserted into the through-hole to come into contact with the through-hole , so the printed circuit board is prone to whitening due to the contact pressure exerted on the through-hole by the press-fit portion, and the plating of the through-hole is sometimes peeled off. Since whitening of a printed circuit board means molecular destruction of components constituting the board, the molecular destruction causes not only deterioration of electrical insulation and withstand voltage of the printed circuit board but also increase in resistance of circuit patterns.

Contents of the invention

In view of the above-mentioned problems in conventional press-fit type connector terminals, an object of the present invention is to provide a press-fit type connector terminal capable of reducing the need for inserting the press-fit type connector terminal into By the force used in the through-hole formed by the printed circuit board, avoid plastic deformation of the contact part when the press-fit type connector terminal is inserted into the through-hole, avoid whitening of the printed circuit board, avoid deterioration of the plating surface of the through-hole, and provide Superior contact reliability.

In a first aspect of the present invention, a press-fit type connector terminal includes: a pin portion having a U-shaped or quadrangular cross-section; and a contact portion located at a front end of the pin portion, the contact portion comprising: a contact piece about an imaginary centerline extending parallel to the longitudinal axis of the pin portion, the contact piece having the shape of a barrel or spindle; Slits extending substantially parallel to the wires; said connector terminals are formed from a single bent metal plate with elasticity.

In the press-fit type connector terminal according to the present invention, the contact piece designed in a barrel or spindle shape can elastically enlarge or reduce its diameter through the slit, ensuring that when the contact piece is inserted through the printed circuit The contact piece defining the contact portion can be elastically deformed to be inserted into the through hole when the plate is formed in the through hole, and the contact portion no longer exerts excessive pressure (contact pressure) on the inner surface of the through hole. . Therefore, it is possible to reduce the force used to insert the press-fit type connector terminal into the through-hole formed through the printed circuit board, and prevent the contact portion from being plastically deformed when the press-fit type connector terminal is inserted into the through-hole. ground deformation, prevents whitening of printed circuit boards, and further prevents degradation of plated surface of through holes. In addition, since the contact piece inserted into the through hole is brought into contact with the inner surface of the through hole by the elastic force of the metal plate to maintain the force with which the contact piece enlarges its diameter, excellent contact reliability can be provided. .

The press-fit type connector terminal may be designed to further include an inner shaft portion located in the contact portion and continuous with at least one of the pin portion and the contact piece.

By thus designing the press-fit type connector terminal, it is possible to increase the strength of the press-fit type connector terminal and ensure stable contact.

In a second aspect of the present invention, there is provided a press-fit type connector terminal comprising: a pin portion having a U-shaped or quadrilateral cross-section; and a contact portion located at a front end of the pin portion, the The contact portion includes a plurality of "<" shaped or arc-shaped contact pieces having a longitudinal axis extending parallel to an imaginary centerline and protruding outward to surround the imaginary centerline, wherein the imaginary centerline is parallel to The longitudinal axes of the pin portions extend in parallel, and the connector terminals are formed from a single bent metal plate having elasticity.

In the press-fit type connector terminal according to the present invention, the contact portion may overall have a barrel shape capable of elastically expanding or contracting its diameter, thereby ensuring A plurality of the contact pieces defining the contact portion are elastically deformed to be inserted into the through hole formed by the plate, so that the contact portion no longer exerts excessive pressure on the inner surface of the through hole (contact pressure ). Therefore, it is possible to reduce the force used to insert the press-fit type connector terminal into the through-hole formed through the printed circuit board, and prevent the contact portion from being plastically deformed when the press-fit type connector terminal is inserted into the through-hole. ground deformation, prevents whitening of printed circuit boards, and further prevents degradation of plated surface of through holes. Furthermore, since the contact piece inserted into the through-hole contacts the inner surface of the through-hole at multiple points, thereby maintaining the force with which the contact piece enlarges its diameter, excellent contact reliability can be provided.

In addition, since the press-fit type connector terminal according to the present invention can be formed by bending a single metal plate having elasticity, the number of parts can be reduced, and the manufacturing cost can be reduced. Comparing the "<" shaped contact piece with the curved contact piece, the curved contact piece tends to have a higher yield strength and therefore does not deteriorate until it deforms to a greater extent. Therefore, the arc-shaped contact blade enhances the repeatability of the press-fit type connector terminal being inserted and pulled out of the through-hole, and thus is superior to the "<"-shaped contact blade.

In a third aspect of the present invention, there is provided a press-fit type connector terminal comprising: a pin portion having a U-shaped or quadrangular cross-section; an inner shaft portion located at a front end of the pin portion; and a contact portion , which includes a plurality of "<" shaped or arc-shaped contact pieces having a longitudinal axis extending parallel to the longitudinal axis of the inner shaft portion and protruding outward to surround the inner shaft portion, the Connector terminals are constructed from a single bent sheet of metal that is resilient.

In the press-fit type connector terminal according to the present invention, similarly to the second aspect of the present invention, the contact portion may have the shape of a barrel that can elastically enlarge or reduce its diameter as a whole, thereby ensuring that due to when the press-fit When a type connector terminal is inserted into a through hole formed through a printed circuit board, a plurality of the contact pieces defining the contact portion are elastically deformed to be inserted into the through hole, so the contact portion is no longer aligned with the inside of the through hole. Excessive pressure applied to the surface (contact pressure). Therefore, it is possible to reduce the force used to insert the press-fit type connector terminal into the through-hole formed through the printed circuit board, and prevent the contact portion from being plastically deformed when the press-fit type connector terminal is inserted into the through-hole. ground deformation, prevents whitening of printed circuit boards, and further prevents degradation of plated surface of through holes. Furthermore, since the contact piece inserted into the through-hole contacts the inner surface of the through-hole at multiple points, thereby maintaining the force with which the contact piece enlarges its diameter, excellent contact reliability can be provided.

In addition, since the contact portion is designed to include a plurality of contact pieces having a longitudinal axis extending parallel to the longitudinal axis of the inner shaft portion and protruding outward to surround the inner shaft portion, the inner shaft portion is located at the center of the contact piece, ensuring a stable contact.

In addition, similarly to the third aspect of the present invention, since the press-fit type connector terminal according to the present invention can be formed by bending a single metal plate having elasticity, the number of parts can be reduced, and the manufacturing cost can be reduced.

Preferably, the contact strips are equidistantly spaced from adjacent contact strips.

By designing the contact pieces so that each of the contact pieces is in contact with the inner surface of the through-hole to maintain a force for enlarging its diameter, and therefore, the contact pieces are in contact with the inner surface of the through-hole at equidistant plural positions, Contact reliability can be enhanced.

Preferably, the inner shaft portion is formed on an outer surface thereof with a protruding portion protruding toward the contact piece.

By designing the inner shaft portion in this way, when the contact portion of the press-fit type connector terminal is inserted into the through hole formed through the printed circuit board, contact due to the reduction in the diameter of the contact piece can be prevented by the protruding portion. Excessive deformation of the tab, thereby ensuring that the repeatability of the press-fit connector terminal being inserted and pulled out of the through-hole can be enhanced.

Preferably, the press-fit type connector terminal further includes a C-shaped binder arranged around the distal end and the proximal end of the contact piece so as to surround an imaginary center line.

By designing the press-fit type connector terminal to also include a C-shaped binder, a plurality of contact pieces can be stably arranged, ensuring that contact reliability can be enhanced.

Preferably, the press-fit type connector terminal further includes a tapered inclined portion at a distal end of the binder, wherein the binder is located at a distal end of the contact piece.

By designing the press-fit type connector terminal to further include a tapered inclined portion, since the tapered inclined portion continuous with the distal end of the binder contacts the inner surface of the through hole at the opening of the through hole, The contact portion of the press-fit type connector terminal is then guided into the through hole formed through the printed circuit board when inserted into the through hole, thus ensuring that the insertability of the contact portion can be enhanced.

Preferably, the press-fit type connector terminal further includes: a shoulder having a portion protruding beyond the outer surface of the pin portion, or a protrusion having a portion whose diameter is larger than the outer diameter of the pin portion. edge.

By designing the press-fit connector terminal to also include the shoulder or the flange, it is possible to have a shoulder having a portion protruding beyond the outer surface of the pin portion or having a diameter larger than the The flange of the portion having a larger outer diameter of the pin portion exerts pressure to insert the contact portion into the through hole formed through the printed circuit board, thereby ensuring that the insertion of the contact portion into the through hole formed through the printed circuit board can be enhanced. operability within.

Preferably, the metal plate comprises: a strip-shaped first area for forming the pin portion; a strip-shaped second area for forming the inner shaft portion, the second area being connected to the first a region whose distal end is continuous and has a width smaller than the width of the first region; a connecting region that is continuous with the distal end of the second region and has a width smaller than the width of the second region; and a third area for forming the contact portion, the third area includes a plurality of slits extending parallel to the longitudinal axis of the second area, the third area is connected to the distal end of the connection area continuous and having a substantially rectangular shape having a width greater than the width of the second region.

By designing the metal plate in this way, the press-fit type connector terminal can be formed by folding the first region and the second region around the connection region that is longitudinally continuous with the first and second regions. the second region, fold the third region 180 degrees toward the second region around the connection region, and bend the third region so that the third region surrounds the second region, thereby ensuring that Improve manufacturing yields.

The metal plate may be designed to include: a band-shaped first area for forming the pin portion; a band-shaped second area for forming the inner shaft portion, the second area being connected to the first a region is continuous at its distal end and has a width smaller than that of said first region; and a third region for forming said contact portion, said third region comprising a longitudinal axis parallel to said second region a plurality of slits extending in a continuous manner, the third region is continuous with the distal end of the second region and has a substantially rectangular shape having a width greater than the width of the second region width.

The metal plate may be designed to include: a strip-shaped first area for forming the pin portion; a third area for forming the contact portion, the third area comprising a contact with the first area. a plurality of slits extending parallel to the longitudinal axis, the third region being continuous with the distal end of the first region and having a substantially rectangular shape having a a large width; and a band-shaped second region for forming the inner shaft portion, the second region is continuous with the distal end of the third region and has a width smaller than that of the third region width.

Preferably, at least a part of the first region has a thickness greater than that of the third region.

By designing the first region in this way, an optimum contact load can be achieved independently of the thickness of the first and third regions.

Preferably, the second region includes a fourth region for forming a protruding portion protruding in both width and thickness directions of the second region.

By designing the second region to include the fourth region, a protruding portion protruding toward the contact piece can be easily formed on the outer surface of the inner shaft portion.

The metal plate may be designed to include: a strip-shaped first area for forming the pin portion; and a third area for forming the contact portion, the third area including the first area and the first area. A plurality of slits extending parallel to the longitudinal axis of the third region, the third region is continuous with the distal end of the first region, and has a substantially rectangular shape having a larger diameter than the first region The width of the large width.

By thus designing the metal plate, it is possible to easily form the press-fit type connector terminal having the pin portion and the contact portion but not having an inner shaft portion. In addition, since the second region for forming the inner shaft portion does not need to be formed, the metal plate can be reduced in volume and the press-fit type connector terminal can be made lightweight.

The metal plate may be designed to include: a strip-shaped first area for forming the pin portion; and a third area for forming the contact portion, the third area being the same as that of the first area. The distal end is continuous and has a substantially rectangular shape with a width greater than that of the first region.

By designing the metal plate in this way, it is possible to easily form a press-fit type connector terminal having a barrel or spindle-shaped contact piece and the slit formed in the contact piece, But without said inner shaft portion.

The press-fit type connector terminal may be designed to further include a strip-shaped second region for forming the inner shaft portion, the second region is continuous with the distal end of the third region or located at the first Between a region and the third region, the second region has a width smaller than that of the third region.

By designing the press-fit type connector terminal in this way, it is possible to easily form the press-fit type connector terminal having the inner shaft portion within the barrel or spindle-shaped contact piece.

Advantages obtained by the present invention described above will be described below.

The present invention provides a press-fit type connector terminal capable of reducing the force used to insert the press-fit type connector terminal into a through hole formed through a printed circuit board, when the press-fit type The connector terminal avoids plastic deformation of the contact portion when inserted into the through hole, prevents whitening of the printed circuit board, prevents the plating surface of the through hole from deteriorating, and provides superior contact reliability.

The above and other objects and advantages of the present invention will become apparent from the following description with reference to the accompanying drawings, in which like reference numerals designate the same or similar parts.

Description of drawings

Fig. 1 is a perspective view of a press-fit type connector terminal according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a press-fit type connector terminal according to a first embodiment of the present invention, viewed from a different angle of FIG. 1 .

Fig. 3 is a front view of the press-fit type connector terminal shown in Fig. 1 .

FIG. 4 is a cross-sectional view along line A-A shown in FIG. 3 .

FIG. 5 is a view viewed in the direction indicated by arrow B shown in FIG. 3 .

6 is a partial cross-sectional view showing the press-fit type connector terminal shown in FIG. 1 before being inserted into a through-hole formed through a printed circuit board.

7 is a partial cross-sectional view showing the press-fit type connector terminal shown in FIG. 1 after being inserted into a through-hole formed through a printed circuit board.

Fig. 8 is a view showing a processed metal plate from which the press-fit type connector terminal shown in Fig. 1 is manufactured.

Fig. 9 is a perspective view of a press-fit type connector terminal according to a second embodiment of the present invention.

Fig. 10 is a front view of the press-fit type connector terminal shown in Fig. 9 .

Fig. 11 is a right side view of the press-fit type connector terminal shown in Fig. 9 .

FIG. 12 is a view viewed according to arrow C shown in FIG. 10 .

FIG. 13 is a view viewed according to arrow D shown in FIG. 10 .

Fig. 14 is a view showing a processed metal plate from which the press-fit type connector terminal shown in Fig. 9 is manufactured.

Fig. 15 is a perspective view of a press-fit type connector terminal according to a third embodiment of the present invention.

Fig. 16 is a front view of the press-fit type connector terminal shown in Fig. 15 .

Fig. 17 is a right side view of the press-fit type connector terminal shown in Fig. 15 .

FIG. 18 is a view viewed according to arrow E shown in FIG. 16 .

FIG. 19 is a view viewed according to arrow F shown in FIG. 16 .

FIG. 20 is a view showing a processed metal plate from which the press-fit type connector terminal shown in FIG. 15 is manufactured.

Fig. 21 is a perspective view of a press-fit type connector terminal according to a fourth embodiment of the present invention.

Fig. 22 is a front view of the press-fit type connector terminal shown in Fig. 21 .

Fig. 23 is a right side view of the press-fit type connector terminal shown in Fig. 21 .

FIG. 24 is a view viewed according to arrow G shown in FIG. 22 .

FIG. 25 is a view viewed according to arrow H shown in FIG. 22 .

Fig. 26 is a view showing a processed metal plate from which the press-fit type connector terminal shown in Fig. 21 is manufactured.

Fig. 27 is a perspective view of a press-fit type connector terminal according to a fifth embodiment of the present invention.

FIG. 28 is a perspective view of the press-fit type connector terminal shown in FIG. 27 viewed from a different angle of FIG. 27 .

Fig. 29 is a front view of the press-fit type connector terminal shown in Fig. 27 .

Fig. 30 is a right side view of the press-fit type connector terminal shown in Fig. 29 .

FIG. 31 is a view viewed according to arrow J shown in FIG. 29 .

FIG. 32 is a view viewed according to arrow K shown in FIG. 29 .

FIG. 33 is a cross-sectional view along line M-M shown in FIG. 29 .

FIG. 34 is a partial cross-sectional view along line N-N shown in FIG. 29 .

Fig. 35A is a view showing a processed metal plate from which the press-fit type connector terminal shown in Fig. 27 is manufactured.

FIG. 35B is a view viewed from arrow O shown in FIG. 35A.

Fig. 36 is a perspective view of a press-fit type connector terminal according to a sixth embodiment of the present invention.

FIG. 37 is a perspective view of the press-fit type connector terminal shown in FIG. 36 viewed from a different angle of FIG. 36 .

Fig. 38 is a front view of the press-fit type connector terminal shown in Fig. 36 .

Fig. 39 is a right side view of the press-fit type connector terminal shown in Fig. 38 .

FIG. 40 is a view viewed according to arrow P shown in FIG. 38 .

FIG. 41 is a view viewed according to arrow Q shown in FIG. 38 .

FIG. 42 is a cross-sectional view along line R-R shown in FIG. 38 .

FIG. 43 is a partial cross-sectional view along line S-S shown in FIG. 38 .

Fig. 44A is a view showing a processed metal plate from which the press-fit type connector terminal shown in Fig. 36 is manufactured.

FIG. 44B is a view viewed from arrow T shown in FIG. 44A.

Fig. 45 is a perspective view of a press-fit type connector terminal according to a seventh embodiment of the present invention.

FIG. 46 is a perspective view of the press-fit type connector terminal shown in FIG. 45 viewed from a different angle of FIG. 45 .

Fig. 47 is a front view of the press-fit type connector terminal shown in Fig. 45 .

Fig. 48 is a right side view of the press-fit type connector terminal shown in Fig. 47 .

FIG. 49 is a view viewed according to arrow U shown in FIG. 47 .

FIG. 50 is a view viewed according to arrow V shown in FIG. 47 .

FIG. 51 is a cross-sectional view along line W-W shown in FIG. 47 .

Fig. 52A is a view showing a processed metal plate from which the press-fit type connector terminal shown in Fig. 45 is manufactured.

FIG. 52B is a view viewed according to arrow X shown in FIG. 52A.

detailed description

(first embodiment)

As shown in FIGS. 1 to 8 , the press-fit type connector terminal 100 according to the first embodiment of the present invention is formed by bending a single metal plate 8 having elasticity shown in FIG. 8 .

The press-fit type connector terminal 100 includes: a pin portion 11 having a U-shaped cross section; an inner shaft portion 12 continuous with the front end of the pin portion 11; and a contact portion 14 including a plurality of “<”-shaped contact pieces 13 , the contact pieces 13 extend parallel to the longitudinal axis of the inner shaft portion 12, protrude outward to surround the inner shaft portion 12, and are equidistantly spaced from adjacent contact pieces.

Each of the contact pieces 13 defining the contact portion 14 is formed at its distal and proximal ends with C-shaped binders 15 and 16 surrounding the inner shaft portion 12 .

As shown in FIGS. 1 to 3 , the press-fit type connector terminal 100 includes: an elongated pin portion 11 ; an inner shaft portion 12 continuous with the distal end of the pin portion 11 and having a diameter smaller than that of the pin portion 11 ; and Has a barrel shape to thereby surround the contact portion 14 of the inner shaft portion 12 . The contact portion 14 can elastically enlarge and reduce its diameter.

Therefore, as shown in FIGS. 6 and 7, since the plurality of contact pieces 13 defining the contact portion 14 are elastically deformed so that they are close to the inner shaft portion 12, and when the contact portion 14 is inserted into the printed circuit board 20 formed and used metal 22 is inserted into the through hole 21 when plated, so the force used to insert the contact portion 14 into the through hole 21 can be reduced. Also, since the contact portion 14 no longer applies excessive pressure (contact pressure) to the inner surface of the through hole 21 , the plated surface of the through hole 21 is not deteriorated, and the printed circuit board 20 can be prevented from being whitened. In addition, since the contact piece 13 is in contact with the inner shaft portion 12, it is difficult for the contact piece 13 to deform elastically even if the pin portion 11 is inclined.

Moreover, since each of the contact pieces 13 defining the contact portion 14 that has been inserted into the through hole 21 equally contacts the inner surface of the through hole 21 at a plurality of positions to maintain the force used by the contact piece 13 to enlarge its diameter, Poor contact will not occur, thereby providing superior contact reliability.

In addition, as shown in FIGS. 1 and 2, since the C-binders 15 and 16 surround the inner shaft portion 12 at the distal and proximal ends of each of the contact pieces 13, when the contact portion 14 is inserted into the through hole 21 The contact piece 13 can be stably provided both after the contact portion 14 is inserted into the through hole 21, as shown in FIGS. 6 and 7, thereby ensuring that contact reliability can be enhanced.

The press-fit type connector terminal 100 is formed by bending a single metal plate 10 having elasticity shown in FIG. 8 . The metal plate 10 comprises: a strip-shaped first area 1 for forming a pin portion 11; a strip-shaped second area 2 which is continuous with the front end of the first area 1 for forming an inner shaft portion 12; a connecting area 3, which is continuous with the front end of the second area 2 ; and a third area 5 which is continuous with the front end of the connection area 3 for forming the contact portion 14 .

The second region 2 has a width 2w smaller than the width 1w of the first region 1 . The connection region 3 has a width 3w which is smaller than the width 2w of the second region 2 (the width 3w is half the width 2w). The third region 5 has a width 5w greater than the width 2w of the second region 2 . The third region 5 is formed using a plurality of slits 4 extending parallel to the longitudinal direction L (see FIG. 3 ) of the second region 2 . The connection area 3 has a side extending from the side 2 a of the second area 2 .

The following describes forming the press-fit type connector terminal 100 shown in FIG. 1 by bending the metal plate 10 shown in FIG. 8 .

First, the first region 1 and the second region 2 are folded around the folding line 6 extending in the length direction L of the first region 1 and the second region 2, so that the first region 1 and the second region 2 have a U-shaped cross section . Then, the third region 5 is folded 180 degrees toward the second region 2 around the folding line 3 a that traverses the connection region 3 . Then, the third region 5 is bent so that the sides 5a and 5b extending perpendicularly to the length direction L are C-shaped, and the columns 5c of the third region 5 extending parallel to the length direction L are in the shape of "<", The third region 5 thus has the shape of a barrel surrounding the inner shaft portion 12 .

As described above, since the press-fit type connector terminal 100 can be formed by bending the single metal plate 10 having elasticity, the number of parts can be reduced and the manufacturing cost can be reduced.

(second embodiment)

A press-fit type connector terminal 200 according to a second embodiment of the present invention will be described below with reference to FIGS. 9 to 14 . The press-fit type connector terminal 200 is formed by bending a single metal plate 210 having elasticity shown in FIG. 14 .

The press-fit type connector terminal 200 includes: a pin portion 211 having a U-shaped cross section; an inner shaft portion 212 continuous with the front end of the pin portion 211; and a contact portion 214 including a plurality of “<”-shaped contact pieces 213 , the contact pieces 213 extend parallel to the longitudinal axis of the inner shaft portion 212 , protrude outward to surround the inner shaft portion 212 , and are equidistantly spaced from adjacent contact pieces 213 .

Each of the contact pieces 213 defining a contact portion 214 is formed at its distal and proximal ends with C-shaped binders 215 and 216 surrounding the inner shaft portion 212 . The prong portion 211 is formed with a shoulder 201 protruding beyond the outer surface of the prong portion 211 near the contact portion 214 .

The contact portion 214 has the same shape and function as the contact portion 14 of the press-fit type connector terminal 100 shown in FIG. 1 . However, since the contact portion 214 is designed to have the shoulder 201, the shoulder 201 can be pressed to insert the contact portion 214 of the press-fit type connector terminal 200 into the through hole formed through the printed circuit board to ensure enhanced operability sex.

In addition, since the press-fit type connector terminal 200 has the inner shaft portion 212, the press-fit type connector terminal 200 can be vertically inserted into the through hole. Also, since the contact piece 213 is in contact with the inner shaft portion 212, even if the press-fit type connector terminal 200 is inclined when inserted into the through hole, the press-fit type connector terminal 200 can be prevented from being excessively inclined, thereby ensuring that the contact piece 213 There is no plastic deformation and thus good contact with the vias is possible.

As shown in FIG. 14 , the metal plate 210 includes: a strip-shaped first region 221 for forming the pin portion 211; continuous, and have a width 222w smaller than the width 221w of the first region 221; and a substantially rectangular third region 223 for forming the contact portion 214, extending beyond the second region on the opposite side, having The width 222w is larger than the width 223w, and has a plurality of slits 224 extending parallel to the longitudinal axis of the second region 222 . The first region 221 has protruding regions 227 and 228 adjacent to the third region 223 for forming the shoulder 201 .

The press-fit type connector terminal 200 shown in FIG. 9 is formed by pressing a metal plate 210 having a shape shown in FIG. 14 as follows.

First, the first region 221 is folded around the folding line 225 extending in the length direction of the first region 221 so that the first region 221 has a U-shaped cross section. Then, the connection portion 226 located at the boundary between the first region 221 and the second region 222 is stepped. Then, the third region 223 is bent such that the column 223 c of the third region 223 has a “<” shape, thereby making the third region 223 have a barrel shape surrounding the inner shaft portion 212 .

By manufacturing the press-fit type connector terminal 200 using a metal plate 210 having the shape shown in FIG. degradation, and enhance the reliability of the contact portion 214.

(third embodiment)

A press-fit type connector terminal 300 according to a third embodiment of the present invention will be described below with reference to FIGS. 15 to 20 . The press-fit type connector terminal 300 is formed by bending a single metal plate 310 having elasticity shown in FIG. 20 .

The press-fit type connector terminal 300 includes: a pin portion 311 having a U-shaped cross section; an inner shaft portion 312 continuous with the front end of the pin portion 311; and a contact portion 314 including a plurality of “<”-shaped contact pieces 313 , the contact pieces 313 extend parallel to the longitudinal axis of the inner shaft portion 312 , protrude outward to surround the inner shaft portion 312 , and are equidistantly spaced from adjacent contact pieces 313 .

Each of the contact pieces 313 defining a contact portion 314 is formed at its distal and proximal ends with C-shaped binders 315 and 316 surrounding the inner shaft portion 312 . The pin portion 311 is formed with a flange 301 having a larger diameter than the outer diameter of the pin portion 311 near the contact portion 314 .

The contact portion 314 has the same shape and function as the contact portion 14 of the press-fit type connector terminal 100 shown in FIG. 1 . However, since the contact portion 314 is designed with the flange 301, the flange 301 can be pressed to insert the contact portion 314 of the press-fit type connector terminal 300 into the through hole formed through the printed circuit board to ensure enhanced operability sex.

In addition, since the press-fit type connector terminal 300 has the inner shaft portion 312 shown in FIG. 19, the press-fit type connector terminal 300 can be vertically inserted into the through hole. Also, since the contact piece 313 is in contact with the inner shaft portion 312, even if the press-fit type connector terminal 300 is inclined when inserted into the through hole, the press-fit type connector terminal 300 can be prevented from being excessively inclined to ensure that the contact piece 313 does not plastically deforms and thus makes good contact with the vias.

As shown in FIG. 20 , the metal plate 310 includes: a strip-shaped first region 321 for forming the pin portion 311; a substantially rectangular third region 323 for forming the contact portion 314, which is connected to the front end of the first region 321 Continuous, having a width 323w larger than the width 321w of the first region 321, and having a plurality of slits 324 extending parallel to the longitudinal axis of the first region 321; The area 325 is continuous with the front end of the third area 323 and has a width 325w smaller than the width 323w of the third area 323 . The metal plate 310 also includes a fourth area 326 for forming the flange 301 , which is continuous with the second area 325 and intersects the second area 325 in a T-shape.

The press-fit type connector terminal 300 shown in FIG. 15 is formed by pressing a metal plate 310 having a shape shown in FIG. 20 as follows.

First, the first region 321 and the second region 325 are folded around folding lines 327 and 328 extending in the length direction of the first region 321 and the second region 325, respectively, so that the first region 321 and the second region 325 have U shaped cross section. Then, the metal plate 310 is folded 180 degrees around the folding line 329 , and the fourth region 326 is bent in the shape of a ring to surround the pin portion 311 . Thereafter, the third region 323 is bent so that the column 323 c of the third region 323 has a “<” shape, thereby making the third region 323 have a barrel shape surrounding the inner shaft portion 312 .

By manufacturing the press-fit type connector terminal 300 using a metal plate 310 having the shape shown in FIG. degradation, and enhance the reliability of the contact portion 314.

(fourth embodiment)

A press-fit type connector terminal 400 according to a fourth embodiment of the present invention will be described below with reference to FIGS. 21 to 26 . The press-fit type connector terminal 400 is formed by bending a single metal plate 410 having elasticity shown in FIG. 26 .

The press-fit type connector terminal 400 includes: a pin portion 411, which has a quadrangular cross-section; an inner shaft portion 412, which is continuous with the front end of the pin portion 411; and a contact portion 414, which includes a plurality of “<”-shaped contact pieces 413, The contact pieces 413 extend parallel to the longitudinal axis of the inner shaft portion 412 , protrude outward to surround the inner shaft portion 412 , and are equidistantly spaced from adjacent contact pieces 413 .

Each of the contact pieces 413 defining the contact portion 414 is formed at its distal and proximal ends with C-shaped binders 415 and 416 surrounding the rectangular column-shaped inner shaft portion 412 . The pin portion 411 is formed at the center in the length direction with a shoulder 401 protruding beyond the outer surface of the pin portion 411 .

The contact portion 414 has the same shape and function as the contact portion 14 of the press-fit type connector terminal 100 shown in FIG. 1 . However, since the contact portion 414 is designed to have the shoulder 401, the shoulder 401 can be pressed to insert the contact portion 414 into a through hole formed through the printed circuit board to ensure enhanced operability.

Since the press-fit type connector terminal 400 is designed to have the inner shaft portion 412 having a quadrangular cross-section and having a rectangular column shape, the press-fit type connector terminal 400 can be vertically inserted into the through hole. Also, since the contact piece 413 is in contact with the inner shaft portion 412, even if the press-fit type connector terminal 400 is inclined when inserted into the through hole, the press-fit type connector terminal 400 can be prevented from being excessively inclined to ensure that the contact piece 413 There is no plastic deformation and thus good contact with the vias is possible.

The press-fit type connector terminal 400 shown in FIG. 21 is made of a metal plate 410 shown in FIG. 26 . The metal plate 410 includes: a first area 421 for forming a pin portion 411 of a rectangular column shape; a second area 422 for forming an inner shaft portion 412 of a rectangular column shape continuous with the front end of the first area 421; The third area 423 forming the contact portion 414 is continuous with the front end of the second area 422 . The second region 422 has a width 422w smaller than the width 421w of the first region 421 . The third region 423 is substantially rectangular and has a width 423w greater than the width 422w of the second region 422 . The third region 423 is formed with a plurality of slits 424 extending parallel to the longitudinal axis of the second region 422 .

The first region 421 includes a fifth region 427 for forming the shoulder 401 at the center in the length direction thereof. The first region 421 has a thickness greater than that of the third region 423 . The second region 422 has a thickness smaller than that of the first region 421 but greater than that of the third region 423 . The relationship between the thicknesses of the first to third regions 421, 422 and 423 can be changed by selecting a metal plate having a different shape, flattening the first to third regions by pressing, or cutting the first to the third area.

The press-fit type connector terminal 400 shown in FIG. 21 is formed by pressing a metal plate 410 having a shape shown in FIG. 26 as follows.

First, the third region 423 is folded 180 degrees toward the second region 422 around the folding line 426 located at the boundary between the second region 422 and the third region 423 . Then, the third region 423 is bent so that the sides 423a and 423b of the third region 423 have a C-shape, and the column 423c of the third region 423 is bent in a "<" shape, thereby making the third region 423 have a One of the inner shaft portions 422 is in the shape of a barrel.

By manufacturing the press-fit type connector terminal 400 using a metal plate 410 having the shape shown in FIG. degradation, and enhance the reliability of the contact portion 414.

(fifth embodiment)

A press-fit type connector terminal 500 according to a fifth embodiment of the present invention will be described below with reference to FIGS. 27 to 35B . The press-fit type connector terminal 500 is formed by bending a single metal plate 510 having elasticity shown in FIGS. 35A and 35B .

The press-fit type connector terminal 500 includes: a pin portion 511, which has a U-shaped cross section; an inner shaft portion 512, which is continuous with the front end of the pin portion 511; and a contact portion 514, which includes a plurality of arc-shaped contact pieces 513. The contact pieces 513 extend parallel to the longitudinal axis of the inner shaft portion 512 , protrude outward to surround the inner shaft portion 512 , and are equidistantly spaced from adjacent contact pieces 513 .

The inner shaft portion 512 is formed on its outer surface with a plurality of protruding portions 501 protruding toward the contact piece 513 . Each of the contact pieces 513 is formed with C-shaped binders 515 and 516 surrounding the inner shaft portion 512 at its distal and proximal ends. The binder 515 at the front end of the contact piece 513 is designed to include a tapered inclined portion 502 at its distal end. The pin portion 511 is formed with a shoulder 503 protruding beyond the outer surface of the pin portion 511 in the vicinity of the contact portion 514 in the length direction thereof.

The press-fit type connector terminal 500 is used in the same manner as the press-fit type connector terminal 200 shown in FIG. 9 , and the press-fit type connector terminal 500 has the same function. However, since the press-fit type connector terminal 500 is designed to have the protruding portion 501 protruding toward the contact piece 513 on the outer surface of the inner shaft portion 512, the following situation can be prevented by the protruding portion 501: when the press-fit type connector When the contact portion 514 of the terminal 500 is inserted into the through hole 21 formed through the printed circuit board 20 as shown in FIG. Therefore, the repeatability of inserting and pulling out the press-fit type connector terminal 500 into and from the through hole 21 can be enhanced.

Furthermore, since the press-fit type connector terminal 500 is designed to include a tapered inclined portion 502 at the distal end of the binder 515 located at the distal end of the contact piece 513, when the contact portion 514 of the press-fit type connector terminal 500 When inserted into the through hole 21 (see FIG. 6 ) formed through the printed circuit board 20 , the tapered inclined portion 502 continuous with the distal end of the binder 515 contacts the inner surface of the through hole 21 at the opening of the through hole 21 , and then guided into the through hole 21 to ensure that the insertability of the contact portion 54 into the through hole 21 can be enhanced.

Each of the contact pieces 513 defining a contact portion 514 in the press-fit type connector terminal 500 is designed in an arc shape. Since the arc-shaped contact pieces have a higher yield strength than the “<”-shaped contact pieces, the contact pieces 513 can be prevented from deteriorating until they are deformed to a greater extent. Therefore, the arc-shaped contact piece 513 is superior to the “<”-shaped contact piece in enhancing repeatability of inserting and pulling the press-fit type connector terminal 500 into and out of the through-hole 21 .

A press-fit type connector terminal 500 shown in FIG. 27 is made of a metal plate 510 shown in FIGS. 35A and 35B . The metal plate 510 includes: a strip-shaped first region 521 for forming the pin portion 511; a substantially rectangular third region 523 for forming the contact portion 514, which is continuous with the front end of the first region 521 and has a larger thickness than the first region. the width 521w of the region 521 is large in width 523w, and has a plurality of slits 524 and posts 523c extending parallel to the longitudinal axis of the first region 521; and a band-shaped second region 525 for forming the inner shaft portion 512, It is continuous with the front end of the third region 523 and has a width 525w smaller than the width 523w of the third region 523 . The metal plate 510 also includes a fifth area 526 for forming the shoulder 503 , which is continuous with the first area 521 and intersects the first area 521 in a T-shape. The second region 525 is formed at the center thereof with the fourth region 517 for forming the protruding portion 501 . The fourth region 517 protrudes from the second region 525 in both the width direction 525w and the thickness direction 525t of the second region 525 .

The press-fit type connector terminal 500 shown in FIG. 27 is formed by pressing a metal plate 510 having a shape shown in FIGS. 35A and 35B as follows.

First, the first region 521 and the second region 525 are folded around folding lines 527 and 528 extending in the length direction of the first and second regions 521 and 525, respectively, so that the first and second regions 521 and 525 have U shaped cross section. Then, the fifth region 526 is folded such that the fifth region 526 protrudes beyond the prong portion 511 . Then, the second region 525 is folded 180 degrees toward the third region 523 around the fold line 529 . Thereafter, the third region 523 is bent such that the column 523c of the third region 523 is arcuate, thereby causing the third region 523 to have the shape of a barrel surrounding the inner shaft portion 512 .

By manufacturing the press-fit type connector terminal 500 using a metal plate 510 having the shape shown in FIGS. ), whitening of the via hole 21 is prevented, the plating surface of the via hole 21 is prevented from deteriorating, and the reliability of the contact portion 514 is enhanced.

(sixth embodiment)

A press-fit type connector terminal 600 according to a sixth embodiment of the present invention will be described below with reference to FIGS. 36 to 44B . The press-fit type connector terminal 600 is formed by bending a single metal plate 610 having elasticity shown in FIGS. 44A and 44B .

The press-fit type connector terminal 600 includes: a pin portion 611 having a U-shaped cross section; and a contact portion 614 continuous with the front end of the pin portion 611 . The contact portion 614 includes a plurality of “<”-shaped contact pieces 613 extending parallel to an imaginary centerline 614c extending in the length direction L of the pin portion 611 and protruding outward to surround the imaginary centerline 614c.

The plurality of contact pieces 613 are formed with C-shaped binders 615 and 616 at both their distal and proximal ends about an imaginary centerline 614c. The binder 615 at the front end of the contact piece 613 is designed to include a tapered inclined portion 602 at its distal end. The pin portion 611 is formed with a shoulder 603 protruding beyond the outer surface of the pin portion 611 in the length direction L thereof near the contact portion 614 .

The press-fit type connector terminal 600 shown in FIG. 36 is made of the metal plate 610 shown in FIGS. 44A and 44B. The metal plate 610 includes: a strip-shaped first region 621 for forming the pin portion 611; a substantially rectangular third region 623 for forming the contact portion 614, which is continuous with the front end of the first region 621, and has a larger thickness than the first region. The region 621 has a larger width 623w than a width 621w, and has a plurality of slits 624 and columns 623c extending in the length direction L of the first region 621 . The metal plate 610 also includes a fifth area 626 for forming the shoulder 603 , which is continuous with the first area 621 and intersects the first area 621 in a T-shape.

The press-fit type connector terminal 600 shown in FIG. 36 is formed by pressing a metal plate 610 having a shape shown in FIGS. 44A and 44B as follows.

First, the first region 621 is folded around a folding line 627 extending in the length direction of the first region 621 such that the first region 621 has a U-shaped cross section. Then, the fifth region 626 is folded such that the fifth region 626 protrudes beyond the prong portion 611 . Thereafter, the third region 623 is bent such that the columns 623c of the third region 623 are "<" shaped, thereby making the third region 623 have the shape of a barrel around the imaginary centerline 614c.

The press-fit type connector terminal 600 is used in the same manner as the press-fit type connector terminal 200 shown in FIG. 9 and the press-fit type connector terminal 400 shown in FIG. The press-fit connector terminal 200 shown in 9 has the same function as the press-fit connector terminal 400 shown in FIG. Toner terminal 600 does not include an inner shaft portion. By designing the press-fit type connector terminal 600 not to include the inner shaft portion, the metal plate 610 shown in FIGS. 44A and 44B can be designed not to include an area for forming the inner shaft portion, and therefore, can reduce the The size of the metal plate 610 of the press-fit type connector terminal 600 is manufactured, and also the press-fit type connector terminal 600 can be made light.

(seventh embodiment)

A press-fit type connector terminal 700 according to a seventh embodiment of the present invention will be described below with reference to FIGS. 36 to 52B . The press-fit type connector terminal 700 is formed by bending a single metal plate 710 having elasticity shown in FIGS. 52A and 52B .

As shown in FIGS. 45 to 51 , the press-fit type connector terminal 700 includes: a pin portion 711 having a U-shaped cross section; and a contact portion 714 continuous with the front end of the pin portion 711 . The contact portion 714 includes: a contact piece 713 having a barrel shape surrounding an imaginary centerline 714c extending in the length direction L of the pin portion 711; and a slit 701 extending almost parallel to the imaginary centerline 714c The contact piece 713 extends on the surface. An inner shaft portion 712 having a U-shaped cross-section continuous with the contact piece 713 is located in the contact portion 714 .

Contact piece 713 is formed at both its distal and proximal ends with C-shaped binders 615 and 616 surrounding inner shaft portion 712 substantially coaxial with imaginary centerline 714c. The binder 715 at the front end of the contact piece 713 is designed to include a tapered inclined portion 702 at its distal end. The pin portion 711 is formed with a shoulder 703 protruding beyond the outer surfaces of the pin portion 711 and the contact portion 714 in the vicinity of the contact portion 714 in the length direction L thereof. As shown in FIG. 51 , a plurality of protruding portions 704 protrude from the outer surface of the inner shaft portion 712 to the contact piece 713 .

The press-fit type connector terminal 700 shown in FIG. 45 is made of the metal plate 710 shown in FIGS. 52A and 52B. The metal plate 710 includes: a strip-shaped first region 721 for forming the pin portion 711; a substantially rectangular third region 723 for forming the contact portion 714, which is continuous with the front end of the first region 721 and has a larger thickness than the first region 721. and a belt-shaped second region 725 for forming the inner shaft portion 712 , which is continuous with the front end of the third region 723 and has a width smaller than that of the third region 723 . The metal plate 710 also includes a fifth area 726 for forming the shoulder 703 , which is continuous with the first area 721 and intersects the first area 721 in a T-shape. The second region 725 is formed at the center thereof with the fourth region 717 for forming the protruding portion 704 . The fourth region 717 protrudes from the second region 725 in both the width direction 725w and the thickness direction 725t of the second region 725 .

The press-fit type connector terminal 700 shown in FIG. 45 is formed by pressing a metal plate 710 having a shape shown in FIGS. 52A and 52B as follows.

First, the first region 721 and the second region 725 are folded around the folding lines 727 and 728 extending in the length direction of the first region 721 and the second region 725, so that the first region 721 and the second region 725 have a U-shaped transverse Section, thereby forming pin portion 711 and inner shaft portion 712 . Then, the fifth region 726 is folded such that the fifth region 726 protrudes beyond the prong portion 711 . Thereafter, the inner shaft portion 712 made of the second area 725 is folded 180 degrees to the third area 723 around the folding line 729, whereby the third area 723 surrounds the inner shaft portion 712 and has the shape of a barrel whose The shape has the slit 701 such that the sides 723a and 723b of the third region 723 are in facing relationship (see FIG. 45 ).

The press-fit type connector terminal 700 is used in the same manner as the press-fit type connector terminal 400 shown in FIG. 21 and the press-fit type connector terminal 500 shown in FIG. The press-fit connector terminal 400 shown in 21 has the same function as the press-fit connector terminal 500 shown in FIG. The contact portion 714 of the device terminal 700 includes a contact piece 713 having a continuous shape without a cut line other than the slit 701 . By designing the press-fit type connector terminal 700 to include the contact piece 713, an area where the contact portion 714 is in contact with a through hole formed through the printed circuit board can be increased, thereby ensuring enhanced contact reliability of the contact portion 714 with the through hole.

The shape of the contact portion 714 is not limited to a barrel. The contact portion 714 may be designed to have the shape of a spindle protruding outward with a curved surface at the center in the length direction of the imaginary center line 714c. In addition, the press-fit type connector terminal 700 may be designed not to include the inner shaft portion 712 .

The press-fit type connector terminals 100 , 200 , 300 , 400 , 500 , 600 , and 700 described above are merely examples of the present invention. The scope of the present invention is not limited to those examples.

Industrial Applicability

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

Although this invention has been described in connection with certain preferred embodiments, it should be understood that the subject matter encompassed by this invention is not limited to those specific embodiments. On the contrary, the subject matter of the present invention is intended to embrace all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.

The entire contents of Japanese Patent Application No. 2012-58817 filed on February 28, 2012 including specification, claims, drawings and summary are hereby incorporated by reference.

Claims (17)

1. A press-fit connector terminal, comprising: pin portion, which has a U-shaped or quadrilateral cross-section; and a contact portion located at the front end of the pin portion, The contact parts include: a contact piece about an imaginary centerline extending parallel to the longitudinal axis of the pin portion, the contact piece having the shape of a barrel or spindle; and a slit formed at a portion of the contact piece and extending substantially parallel to the imaginary centerline, The connector terminals are formed from a single bent metal plate with elasticity, The contact pieces show a maximum outer diameter at their longitudinal centers, each of which is elastically deformed when the contact portion is inserted into a through-hole of the printed circuit board, so that the contact piece remains enlarged Its diameter is in contact with the inner surface of the through-hole at the largest outer diameter portion under the state of force used. 2. The press-fit type connector terminal according to claim 1, further comprising an inner shaft portion located in the contact portion and continuous with at least one of the pin portion and the contact piece. 3. A press-fit connector terminal, comprising: pin portion, which has a U-shaped or quadrilateral cross-section; and a contact portion located at the front end of the pin portion, The contact portion includes a plurality of "<" shaped or arc-shaped contact pieces having a longitudinal axis extending parallel to an imaginary centerline and protruding outward to surround the imaginary centerline, wherein the imaginary centerline the line extends parallel to the longitudinal axis of the pin portion, The connector terminals are formed from a single bent metal plate with elasticity, The contact pieces show a maximum outer diameter at their longitudinal centers, each of which is elastically deformed when the contact portion is inserted into a through-hole of the printed circuit board, so that the contact piece remains enlarged Its diameter is in contact with the inner surface of the through-hole at the largest outer diameter portion under the state of force used. 4. A press-fit connector terminal, comprising: a pin portion having a U-shaped or quadrilateral cross-section; a contact portion located at the front end of the pin portion, an inner shaft portion located in the contact portion and continuous with the prong portion; and The contact portion includes a plurality of "<"-shaped or arc-shaped contact pieces having a longitudinal axis extending parallel to the longitudinal axis of the inner shaft portion and protruding outward to surround the inner shaft portion, The connector terminals are formed from a single bent metal plate with elasticity, The contact pieces show a maximum outer diameter at their longitudinal centers, each of which is elastically deformed when the contact portion is inserted into a through-hole of the printed circuit board, so that the contact piece remains enlarged Its diameter is in contact with the inner surface of the through-hole at the largest outer diameter portion under the state of force used. 5. The press-fit type connector terminal according to claim 3, wherein the contact pieces are equidistantly spaced from adjacent contact pieces. 6. The press-fit type connector terminal according to claim 2, wherein the inner shaft portion is formed on an outer surface thereof with a protrusion protruding toward the contact piece. 7. The press-fit type connector terminal according to claim 1, further comprising a C-shaped binder arranged around the distal end and the proximal end of the contact piece so as to surround the imaginary center line. 8. The press-fit type connector terminal according to claim 7, further comprising a tapered inclined portion at a distal end of the binder, wherein the binder is located at a distal end of the contact piece. 9. The press-fit type connector terminal according to claim 1, further comprising at least one of: a shoulder having a portion protruding beyond an outer surface of the pin portion, and a shoulder having a diameter larger than that of the pin The outer diameter of the part is larger than the flange of the part. 10. The press-fit connector terminal according to claim 2, 4 or 6, wherein the metal plate comprises: a strip-shaped first region for forming said pin portion; a band-shaped second region for forming the inner shaft portion, the second region being continuous with the distal end of the first region and having a width smaller than the width of the first region; a connecting region continuous with the distal end of the second region and having a width smaller than the width of the second region; and a third region for forming the contact portion, the third region comprising a plurality of slits extending parallel to the longitudinal axis of the second region, the third region being continuous with the distal end of the connection region , and has a substantially rectangular shape having a width greater than that of the second region. 11. The press-fit connector terminal according to claim 2, 4 or 6, wherein the metal plate comprises: a strip-shaped first region for forming said pin portion; a band-shaped second region for forming the inner shaft portion, the second region being continuous with the distal end of the first region and having a width smaller than that of the first region; and a third area for forming the contact portion, the third area includes a plurality of slits extending parallel to the longitudinal axis of the second area, the third area is connected to the distal end of the second area continuous and having a substantially rectangular shape having a width greater than the width of the second region. 12. The press-fit connector terminal according to claim 2, 4 or 6, wherein the metal plate comprises: a strip-shaped first region for forming said pin portion; a third area for forming the contact portion, the third area includes a plurality of slits extending parallel to the longitudinal axis of the first area, the third area is connected to the distal end of the first area continuous and having a substantially rectangular shape with a width greater than the width of the first region; and A band-shaped second region for forming the inner shaft portion, the second region is continuous with the distal end of the third region, and has a width smaller than that of the third region. 13. The press-fit type connector terminal according to claim 10, wherein at least a part of the first region has a thickness greater than that of the third region. 14. The press-fit type connector terminal according to claim 10, wherein the second area includes a fourth area for forming a protruding area in both width and thickness directions of the second area. the prominent part. 15. The press-fit type connector terminal according to claim 3, wherein the metal plate comprises: a strip-shaped first region for forming said pin portion; and a third area for forming the contact portion, the third area includes a plurality of slits extending parallel to the longitudinal axis of the first area, the third area is connected to the distal end of the first area continuous and having a substantially rectangular shape having a width greater than the width of the first region. 16. The press-fit type connector terminal according to claim 2, wherein the metal plate comprises: a strip-shaped first region for forming said pin portion; and A third region for forming the contact portion, the third region is continuous with the distal end of the first region and has a substantially rectangular shape having a larger thickness than the first region. The width of the large width. 17. The press-fit type connector terminal according to claim 16, further comprising a band-shaped second region for forming the inner shaft portion, the second region being continuous with or continuous with the distal end of the third region Located between the first region and the third region, the second region has a width smaller than that of the third region.