JP2013016394A - Electronic component, connector and contact pin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mount a contact pin to a substrate so that it can be inserted in or removed from the substrate.SOLUTION: A contact leg part 111 is formed on a contact pin 110, so that it extends from between a tip part and a bottom part of the contact pin 110 toward the tip part in a center axis direction of the contact pin. A curve part 112 is formed on the contact leg part 111 to be enlarged outward from a center axis of the contact pin 110 in a curved shape, and pressurizes an inner wall of a through hole 210 when the contact pin 110 is inserted in the through hole 210. The curve part 112 is formed in a direction along the center axis of the contact pin 110 from a center part toward both ends of the curve part 112, so that a distance from the center axis of the contact pin 110 is small. The center part of the curve part 112 is arranged in the through hole 210, when the contact pin 110 is inserted in the through hole 210.

Description

  The present invention relates to an electronic component, a connector, and a contact pin, for example, an electronic component, a connector, and a contact pin that are attached to a through hole formed in a substrate.

  In recent years, connectors that are electrically connected to a printed wiring board using contact pins are known. In order to mount an electronic component such as a connector on a board (for example, a printed wiring board), the contact pin is formed on the board and soldered after inserting the contact pin into the through hole. Reference 1). Further, in order to attach the contact pin to the substrate, the contact pin is prevented from coming out of the through hole by making the outer diameter of the contact pin larger than the inner diameter of the through hole and press-fitting the contact pin (for example, patent References 2, 3, 4 and 5).

JP 2003-17163 A Japanese Utility Model Publication No. 4-102571 JP-A-62-136779 Japanese Patent Laid-Open No. 3-17971 Special table 2009-529686

  However, in the technique described in Patent Document 1, since the contact pins are soldered to the substrate, there is a problem that, for example, when it is desired to remove the electronic component from the substrate, it is necessary to remove the solder. Further, in the techniques described in Patent Documents 3 to 5, since the contact pins are press-fitted so that the contact pins do not come out of the through holes, for example, when it is desired to remove the electronic component from the substrate, it is difficult to remove the contact pins from the substrate. There was a problem. Further, if the contact pins are forcibly removed from the substrate, there is a problem that the contact pins and the through holes of the substrate are damaged.

  The present invention has been made in view of such circumstances, and provides a technique capable of detachably attaching contact pins to a substrate.

  An electronic component of the present invention is an electronic component having a contact pin inserted into a through-hole formed in a substrate and a housing that holds a base portion side of the contact pin, and includes a tip portion and a root portion of the contact pin. A plurality of contact leg portions formed on the contact pin and extending outwardly from the central axis of the contact pin so as to extend along the central axis direction of the contact pin from the gap toward the tip portion And a curved portion that presses an inner wall of the through-hole when the contact pin is inserted into the through-hole, and the curved portion follows a central axis of the contact pin. The center portion of the bending portion is formed such that the distance from the central axis of the contact pin decreases toward the both ends from the center portion of the bending portion. , When the contact pin is inserted into the through-hole is provided so as to be arranged in the through hole.

  According to the technique according to the present invention, the contact pins can be attached to the substrate in a detachable manner.

It is a figure which shows the attachment structure of the connector in the 1st Embodiment of this invention. It is a perspective view which shows the external appearance of the connector in the 1st Embodiment of this invention. It is a top view which shows an example of the printed wiring board to which the connector in the 1st Embodiment of this invention is attached. It is a side view which shows the structure of the contact pin in the 1st Embodiment of this invention. It is sectional drawing when the contact pin in the 1st Embodiment of this invention is cut | disconnected by the AA cut surface of FIG. 4A. It is an external view when the contact pin in the 1st Embodiment of this invention is seen in the direction of arrow B of FIG. 4A. It is sectional drawing which shows typically the state before inserting the connector pin in the 1st Embodiment of this invention in the through-hole of a printed wiring board. It is sectional drawing which shows typically the state after inserting the connector pin in the 1st Embodiment of this invention in the through-hole of a printed wiring board. It is a side view which shows the structure of the 1st modification of the contact pin in the 1st Embodiment of this invention. It is sectional drawing when the 1st modification of the contact pin in the 1st Embodiment of this invention is cut | disconnected by the CC cut surface of FIG. 6A. It is an external view when the 1st modification of the contact pin in the 1st Embodiment of this invention is seen in the direction of arrow D of FIG. 6A. It is a side view which shows the structure of the 2nd modification of the contact pin in the 1st Embodiment of this invention. It is sectional drawing when the 2nd modification of the contact pin in the 1st Embodiment of this invention is cut | disconnected by the EE cut surface of FIG. 7A. It is an external view when the 2nd modification of the contact pin in the 1st Embodiment of this invention is seen in the direction of arrow F of FIG. 7A. It is a perspective view which shows the external appearance of the connector in the 2nd Embodiment of this invention. It is a top view which shows an example of the printed wiring board to which the connector in the 2nd Embodiment of this invention is attached.

<First Embodiment>
A configuration of the connector 100 according to the first embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 shows a mounting structure of a connector 100 according to the first embodiment of the present invention. FIG. 2 is a perspective view showing the appearance of the connector 100. FIG. 3 is a plan view showing an example of a printed wiring board 200 to which the connector 100 is attached.

  As shown in FIGS. 1 and 2, the connector 100 includes a contact pin 110 and a housing 120. Here, a description will be given on the assumption that there are a plurality of contact pins 110, but at least one contact pin 110 is sufficient. The housing 120 holds the base portion 110a of the contact pin 110 (the upper side in FIG. 1 and FIG. 2). The housing 120 is made of, for example, resin.

  A recess 121 is formed in the housing 120 so as to surround the contact pin 110. Thus, by providing the recess 121, the resin or the like for forming the housing 120 does not flow around a portion where the contact pin 110 and the upper surface of the printed wiring board 200 (upper side of the paper surface in FIG. 1) intersect. Can be. As a result, it is possible to improve the mounting accuracy of the connector 100 in the height direction (the vertical direction of the paper surface of FIG. 1).

  Further, as shown in FIG. 2, the cable 300 is electrically connected to the contact pin 110 via the housing 120. 2 indicates the outer shape of the connector 100 when mounted on the printed wiring board 200.

  As shown in FIG. 3, the printed wiring board 200 has a plurality of through holes 210. Contact pins 110 of the connector 100 are inserted into the plurality of through holes 210. For this reason, the through hole 210 is formed so as to correspond to the position where the contact pin 110 is disposed. Therefore, when there is one contact pin 110, there is one through hole 210. In addition, a conductive member (not shown) such as a copper alloy is applied to the inner wall of each through-hole 210 to form a conductive layer 220 (see FIG. 1). The conductive layer 220 is electrically connected to a pattern wiring (not shown) formed in the printed wiring board 200.

  Next, the configuration of the contact pin 110 will be specifically described. FIG. 4A is a side view showing the configuration of the contact pin 110 in the first embodiment of the present invention. 4B is a cross-sectional view of the contact pin 110 taken along the line AA in FIG. 4A. 4C is an external view when the contact pin 110 is viewed in the direction of arrow B in FIG. 4A.

  As shown in FIGS. 4A to 4C, the contact pin 110 includes two contact legs 111 and a shaft 112. The shaft portion 112 constitutes the base portion 110 a side of the contact pin 110. The contact leg portion 111 is formed on the contact pin 110 so as to extend along the central axis CL direction of the contact pin 110 from between the tip portion 110b and the root portion 110a of the contact pin 110 toward the tip portion 110b. Here, although the two contact leg portions 111 are used, the contact pin 110 may be configured by three or more contact leg portions 111. Moreover, the contact leg part 111 may be comprised integrally with the axial part 112 (base part 110a of the contact pin 10), and may be comprised separately. The material of the contact pin 110 is composed of a metal member having conductivity and elasticity, such as phosphor bronze.

  Further, a curved portion 113 is formed on the contact leg 111. The curved portion 113 is formed on the contact leg portion 111 so as to spread outwardly from the central axis CL of the shaft portion 112 of the contact pin 110. As will be described in detail below, the bending portion 113 is configured to press the inner wall of the through hole 210 when the contact pin is inserted into the through hole 210 of the printed wiring board 200.

  Here, a method of attaching the connector 100 to the printed wiring board 200 will be described with reference to the drawings.

  First, a state before the connector 100 is attached to the printed wiring board 200 will be described. FIG. 5A schematically shows a cross section before the connector pin 110 is inserted into the through hole 210 of the printed wiring board 200.

  As shown in FIG. 5A, the central portion 113a in the longitudinal direction of the curved portion 113 (the direction along the central axis CL of the contact pin 110) is formed so as to rise. As described above, the conductive layer 220 is formed in the through hole 210 of the printed wiring board 200 by using a roller to which a conductive member such as a copper alloy is applied. The maximum outer diameter X of the central portion 113 a of the bending portion 113 is larger than the inner diameter Y of the through hole 210 of the printed wiring board 200. Since the contact leg 111 has elasticity as described above, the central portion 113a of the bending portion 113 presses the inner wall of the through hole 210 of the printed wiring board 220 when the connector pin 110 is inserted into the through hole 210. .

  The central portion 113a of the curved portion 113 is formed such that the distance from the central axis CL of the contact pin 110 is larger than the upper end portion 113b and the lower end portion 113c. Specifically, the bending portion 113 extends from the central axis CL of the contact pin 110 toward both ends 113b and 113c from the central portion 113a of the bending portion 113 in the direction along the central axis CL of the contact pin 113. The distance is made smaller. In other words, the outer shape of the curved portion 113 is formed in a teardrop shape or a barrel shape.

  Next, a state after the connector 100 is attached to the printed wiring board 200 will be described. FIG. 5B schematically shows a cross section after the connector pins 110 are inserted into the through holes 210 of the printed wiring board 200.

  As shown in FIG. 5B, the contact pin 110 is inserted into the through hole 210. At this time, a part or all of the bending portion 113 is provided so as to be disposed in a space sandwiched between both end portions 210b and 210c (see FIG. 5A) in the plate thickness direction of the through hole 210. That is, at least the central portion 113a of the curved portion 113 is formed in the through hole 210 (more specifically, both end portions 210b in the plate thickness direction of the through hole 210, when the contact pin 110 is inserted into the through hole 210. In the space between 210c).

  Next, a method of attaching the connector 100 to the printed wiring board 200 will be described based on FIGS. 5A and 5B.

  As shown in FIG. 5A, when the contact pin 110 is inserted into the through hole 210, first, a portion extending from the distal end portion 110b of the contact pin 110 to the lower end portion 113b of the curved portion 113 is inserted into the through hole 210 (arrow). Z direction). At this time, a teardrop-shaped or barrel-shaped curved portion 113 is formed on the contact pin 110. For this reason, even if the tip portion 110b of the contact pin 111 is shifted from the center portion of the through hole 210, the contact pin tip portion 110b is moved toward the center portion of the through hole 210 while the contact pin 111 is moved. 110 can be inserted deeply and smoothly into the through hole 210. Then, by further pressing the contact pin 110 into the through hole 210, the central portion 113a of the bending portion 113 comes into contact with the inner wall of the through hole 210 and then gradually presses the inner wall of the through hole 210 while elastically deforming. It will be in the state of 5B. In addition, when the lower surface of the housing 120 contacts the surface of the printed wiring board 210 (see FIG. 1), the state shown in FIG. 5B is obtained. That is, the lower surface of the housing 120 serves as a stopper. In this way, the bending portion 113 has a smaller distance from the central axis CL of the contact pin 110 in the direction along the central axis CL of the contact pin 113 from the central portion 113a of the bending portion 113 toward the lower end portion 113c. Thus, the contact pin 110 can be smoothly inserted into the through hole 210.

  Further, in the state where the contact pin 110 is inserted into the through hole 210, the maximum outer diameter X of the central portion 113 a of the bending portion 113 is larger than the inner diameter Y of the through hole 210. The central portion 113 a is elastically deformed so as to be crushed by the inner wall of the through hole 210, and conversely, a force for returning to the original shape becomes a reaction force and presses the inner wall of the through hole 210. For this reason, the contact pin 110 is stably held in the through hole 210 while being in contact with the inner wall of the through hole 210. As a result, the contact pin 110 and the conductive member applied to the inner wall of the through hole 210 are stably electrically connected.

  Further, in the state where the contact pin 110 is inserted into the through hole 210, as shown in FIG. 5B, the center portion 113 a that is most raised among the curved portions 113 is formed at both end portions 210 b in the plate thickness direction of the through hole 210. Since the contact pins 110 are disposed between the through holes 210, the contact pins 110 can be smoothly removed from the through holes 210 even after the contact pins 110 are inserted into the through holes 210.

  As described above, the connector 100 according to the first embodiment of the present invention includes the contact pins 110 and the housing 120. The contact pin 110 is inserted into a through hole 210 formed in the printed wiring board 200. The housing 120 holds the base portion 110 a side of the contact pin 110.

  Further, the contact pin 110 of the connector 100 includes a plurality of contact leg portions 111 and a curved portion 113. The contact leg portion 111 is formed on the contact pin 110 so as to extend along the central axis CL direction of the contact pin 110 from between the tip portion 110b and the root portion 110a of the contact pin 110 toward the tip portion 110b.

  The curved portion 113 is formed on the contact leg 111 so as to spread outward from the central axis CL of the contact pin 110. The curved portion 113 presses the inner wall of the through hole 210 when the contact pin 110 is inserted into the through hole 210. Thereby, the contact pin 110 is stably held in the through hole 210 in a state where the contact pin 110 is in contact with the inner wall of the through hole 210. As a result, the contact pin 110 and the conductive member applied to the inner wall of the through hole 210 are stably electrically connected.

  Further, the bending portion 113 has a smaller distance from the central axis CL of the contact pin 110 toward the both end portions 113b and 113c from the central portion 113a of the bending portion 113 in the direction along the central axis CL of the contact pin 110. It is formed as follows. Further, the central portion 113 a of the bending portion 113 is provided so as to be disposed in the through hole 210 when the contact pin 110 is inserted into the through hole 210. In this way, the bending portion 113 has a distance from the central axis CL of the contact pin 110 toward the both end portions 113b and 113c from the central portion 113a of the bending portion 113 in the direction along the central axis CL of the contact pin 113. Since it is formed to be small, the outer shape of the curved portion 113 is a teardrop shape or a barrel shape. Therefore, when the contact pin 110 is inserted into the through hole 210, the contact pin 110 can be smoothly inserted into the through hole 210. In particular, when a large number of contact pins 110 are provided in the connector 100, the front end portion 110b of the contact pin 110 can be efficiently guided to the through hole 210 while absorbing the variation in the size of the front end portion 110b of the contact pin 110. it can.

  In addition, since the center portion 113 a that is the most raised among the curved portions 113 is disposed in the through hole 210, the contact pin 110 can be removed from the through hole 210 even after the contact pin 110 is inserted into the through hole 210. Can be removed. On the other hand, in the techniques described in Patent Documents 3 to 5, the teardrop-shaped or barrel-shaped curved portion 113 is not provided on the contact pin 110 as in the present invention. The most raised central portion 113a does not have a configuration arranged in the through hole 210, and it has not been assumed that the contact pin is pulled out. For this reason, if the contact pin is forcibly removed, the contact pin or the through hole of the printed wiring board may be damaged.

  As described above, according to the connector 100 in the first embodiment of the present invention, the curved portion 113 is formed on the contact shaft portion 111 of the contact pin 113 so that the central portion 113a of the curved portion 113 is most raised. The central portion 113 a of the bending portion 113 is disposed in the through hole 210. Thereby, the contact pin 110 can be attached to the printed wiring board 200 so that it can be inserted and removed.

  In the connector 100 according to the first embodiment of the present invention, the contact leg 113 is formed of an elastic member. Thereby, when the contact pin 110 is inserted into the through hole 210, the inner wall of the through hole 210 can be reliably pressed by the bending portion 113.

  In connector 100 according to the first embodiment of the present invention, contact pin 110 is formed of a conductive member. Thereby, when the conductive member is applied to the inner wall of the through hole 210, electrical connection can be established between the conductive member applied to the inner wall of the through hole 210 and the contact pin 110. Further, when the contact pin 110 is inserted into the through hole 210, the portion of the contact pin 110 from the front end portion 110 b to the central portion 113 a of the bending portion 113 comes in contact with each other while sliding on the inner wall surface of the through hole 210. The contact portion between the two can be cleaned. For this reason, both can be connected more stably electrically. As a result, the electrical reliability of the product of the connector 100 can be improved.

  In the connector 100 according to the first embodiment of the present invention, the cross section of the contact pin 110 when cut in a direction substantially perpendicular to the central axis CL of the contact pin 110 corresponds to the shape of the through hole 210. Is formed. Thereby, the contact area between the curved part 113 of the contact pin 110 and the inner wall of the through hole 210 can be increased. As a result, when the contact pin 110 is inserted into the through hole 210, the inner wall of the through hole 210 can be more reliably pressed by the curved portion 113. In addition, when a conductive member is applied to the inner wall of the through hole 210, an electrical connection can be more reliably established between the conductive member applied to the inner wall of the through hole 210 and the contact pin 110. .

  In the connector 100 according to the first embodiment of the present invention, the contact leg portion 113 may be formed separately from the root portion 110a (shaft portion 112) of the contact pin 110. Even in this case, the same effect as described above can be obtained.

  The contact pin 110 in the first embodiment of the present invention is inserted into the through hole 210 in which the printed wiring board 200 is formed. Since the contact pin 110 has the configuration as described above, the same effect as the connector 100 described above can be obtained.

  Next, a first modification 110A of the contact pin 110 in the first embodiment of the present invention will be described. FIG. 6A is a side view showing the configuration of the contact pin 110A. 6B is a cross-sectional view of the contact pin 110A taken along the line CC of FIG. 6A. FIG. 6C is an external view when the contact pin 110A is viewed in the direction of arrow D in FIG. 6A.

  Here, when the contact pin 110 (FIGS. 3A to 3C) and the contact pin 110A (FIGS. 6A to 6C) are compared, the cross-sectional shape of the contact pin 110 is substantially circular, whereas the cross-section of the contact pin 110A is They are different from each other in that the shape is elliptical. 6A to 6C, the same reference numerals as those shown in FIGS. 3A to 3C are attached to the same components as those shown in FIGS. 3A to 3C. Thus, even when the cross-sectional shape of the contact pin 110A is formed in an elliptical shape, the same effect as described above is obtained. Preferably, the shape of the through hole into which the contact pin 110A is inserted is formed in an elliptical shape corresponding to the cross-sectional shape of the contact pin 110A. Thereby, in particular, the contact area between the curved portion 113A of the contact pin 110A and the inner wall of the through hole can be increased. As a result, when the contact pin 110A is inserted into the through hole, the inner wall of the through hole can be more reliably pressed by the curved portion 113A.

  Next, a second modification 110B of the contact pin 110 in the first embodiment of the present invention will be described. FIG. 7A is a side view showing the contact pin 110B. 7B is a cross-sectional view of the contact pin 110 taken along the line E-E in FIG. 7A. FIG. 7C is an external view of the contact pin 110B when viewed in the direction of arrow F in FIG. 7A.

  Here, when the contact pin 110 (FIGS. 3A to 3C) is compared with the contact pin 110B (FIGS. 7A to 7C), the cross-sectional shape of the contact pin 110 is substantially circular, whereas the cross-section of the contact pin 110B is compared. The two are different from each other in that the shape is a polygonal shape (an octagonal shape in the examples of FIGS. 7A to 7C). 7A to 7C, the same reference numerals as those shown in FIGS. 3A to 3C are attached to the same components as those shown in FIGS. 3A to 3C. Thus, even when the cross-sectional shape of the contact pin 110B is formed in a polygonal shape, the same effect as described above is obtained. Preferably, the shape of the through hole into which the contact pin 110B is inserted is formed in a polygonal shape corresponding to the cross-sectional shape of the contact pin 110B. Thereby, in particular, the contact area between the curved portion 113A of the contact pin 110A and the inner wall of the through hole can be increased. As a result, when the contact pin 110A is inserted into the through hole, the inner wall of the through hole can be more reliably pressed by the curved portion 113A.

<Second Embodiment>
A configuration of a connector 100A according to the second embodiment of the present invention will be described with reference to the drawings.

  FIG. 8 is a perspective view showing an appearance of a connector 100A according to the second embodiment of the present invention. FIG. 9 is a plan view showing an example of a printed wiring board 200A to which the connector 100A according to the second embodiment of the present invention is attached.

  Here, the connector 100 in the first embodiment of the present invention is compared with the connector 100A in the second embodiment of the present invention. As shown in FIGS. 2 and 8, the connector 100 </ b> A is different from the connector 100 in that the holding portion 130 is provided at both ends of the housing 120.

  As shown in FIG. 8, the holding portions 130 are provided at both ends of the housing 120 in order to hold the connector 100A on the printed wiring board 200A. The holding part 130 is rotatably attached to a coupling part 131 with the housing 120 as a fulcrum. A fitting claw 132 is formed at the tip of the holding part 130.

  Next, the printed wiring board 200 and the printed wiring board 200A are compared. As shown in FIGS. 3 and 9, the printed wiring board 200A is different from the printed wiring board 200 in that a fitting hole 230 is formed.

  As shown in FIG. 9, the fitting claws 230 are formed at positions corresponding to the holding portions 130 of the connector 100A so as to sandwich the plurality of through holes 210 arranged in a straight line.

  When attaching the connector 100 </ b> A to the printed wiring board 200 </ b> A, the fitting claw 132 of the holding unit 130 is fitted into the fitting hole 230 while the contact pin 110 is inserted into the through hole 210.

  As described above, the connector 100A according to the second embodiment of the present invention is provided in the housing 120 and includes the holding portion 130 for fixing the connector 100A to the printed wiring board 200A. Accordingly, the connector 100A is held on the printed wiring board 200A by the holding unit 130. As a result, it is possible to suppress the connector 100A from being detached from the printed wiring board 200A due to, for example, vibration. In addition, since the connector 100A is held on the printed wiring board 200A by the holding portion 130, the contact pins 110 are also stably held in the through hole 210. Furthermore, when the conductive member is applied to the inner wall of the through hole 210, the electrical connection between the conductive member applied to the inner wall of the through hole 210 and the contact pin 110 can be further ensured. . In this way, the connector 100A having the holding portion 130 normally inserts the contact pin 110 into the through hole 210 of the printed wiring board 200A to ensure electrical connection between the contact pin 110 and the through hole 210, for example. This is useful when it is necessary to temporarily pull out the contact pin 110 from the through hole and disconnect the electrical connection.

  The present invention has been described above based on the embodiment. The embodiment is an exemplification, and various modifications, increases / decreases, and combinations may be added to the above-described embodiments without departing from the gist of the present invention. It will be understood by those skilled in the art that modifications to which these changes, increases / decreases, and combinations are also within the scope of the present invention.

  In each of the above-described embodiments, the connectors 100 and 100A have been described. However, if the contact pins 110, 110A, 110B and the housing 120 are configured as described above, the present invention can be applied not only to the connectors 100, 110A but also to various electronic components such as semiconductor elements.

  In the above-described embodiments, it has been described that the material of the contact pins 110, 110A, 110B is composed of a metal member having conductivity and elasticity. However, the present invention is not limited to this, and the material of the contact pins 110, 110A, and 110B may be formed of an elastic resin member. In this case, the contact pins 110, 110A, 110B can be made conductive by plating the outer periphery of the contact pins 110, 110A, 110B with a copper alloy or the like. Further, for example, there is a case where electrical connection is not required among the contact pins 110, 110A, 110B included in the connectors 100, 100A. In this case, some or all of the contact pins 110, 110A, 110B of the connectors 100, 110A may be formed of non-conductive.

100, 110A Connector 110, 110A, 110B Contact pin 110a, 110Aa, 110Ba Contact pin base 110b, 110Ab, 110Bb Contact pin tip 111, 111A, 111B Contact leg 112, 112A, 112B Shaft 113, 113A, 113B bending portion 113a bending portion central portion 113b bending portion upper end portion 113c bending portion lower end portion 120 housing 130 holding portion 131 coupling portion 132 fitting claw 200, 200A printed wiring board 210 through hole 210a through hole center portion 210b penetrating Upper end portion of hole 210c Lower end portion of through hole 220 Conductive layer 230 Fitting hole 300 Cable

Claims (8)

An electronic component having a contact pin to be inserted into a through hole formed in a substrate and a housing for holding a base side of the contact pin,
A plurality of contact legs formed on the contact pin so as to extend along the central axis direction of the contact pin from between the tip portion and the root portion of the contact pin toward the tip portion;
A curved portion that is formed on the contact leg portion so as to curve outward from the central axis of the contact pin, and that presses the inner wall of the through hole when the contact pin is inserted into the through hole. ,
The curved portion is formed so that the distance from the central axis of the contact pin decreases in the direction along the central axis of the contact pin from the central portion of the curved portion toward both ends.
The central part of the curved part is an electronic component provided to be disposed in the through hole when the contact pin is inserted into the through hole.   The electronic component according to claim 1, wherein the contact leg portion is formed of an elastic member.   The electronic component according to claim 1, wherein the contact pin is formed of a conductive member.   The electronic component according to claim 1, wherein a cross section of the contact pin when cut in a direction substantially perpendicular to a central axis of the contact pin is formed so as to correspond to a shape of the through hole. .   The electronic component according to claim 1, wherein the contact leg portion is formed separately from a base portion of the contact pin.   The electronic component according to claim 1, further comprising a holding portion that is provided in the housing and fixes the connector to the substrate. A contact pin inserted into a through-hole formed in a substrate, and a connector having a housing for holding a base side of the contact pin,
A plurality of contact legs formed on the contact pin so as to extend along the central axis direction of the contact pin from between the tip portion and the root portion of the contact pin toward the tip portion;
A curved portion that is formed on the contact leg portion so as to curve outward from the central axis of the contact pin, and that presses the inner wall of the through hole when the contact pin is inserted into the through hole. ,
The curved portion is formed so that the distance from the central axis of the contact pin decreases in the direction along the central axis of the contact pin from the central portion of the curved portion toward both ends.
The central portion of the curved portion is a connector provided to be disposed in the through hole when the contact pin is inserted into the through hole. A contact pin inserted into a through-hole formed in the substrate,
A plurality of contact legs formed on the contact pin so as to extend along the central axis direction of the contact pin from between the tip portion and the root portion of the contact pin toward the tip portion;
A curved portion that is formed on the contact leg portion so as to curve outward from the central axis of the contact pin, and that presses the inner wall of the through hole when the contact pin is inserted into the through hole. ,
The curved portion is formed so that the distance from the central axis of the contact pin decreases in the direction along the central axis of the contact pin from the central portion of the curved portion toward both ends.
A central portion of the curved portion is a contact pin provided to be disposed in the through hole when the contact pin is inserted into the through hole.

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