KR200490830Y1 - Connector Pin for Printed Circuit Board - Google Patents

Abstract

The present invention relates to a coupling pin for a printed circuit board for firmly supporting an external force in a coupling pin forcibly coupled to a through-hole of a printed circuit board, the side of the inlet is formed convex, the external force applied to the connection portion The introduction portion is firmly supported, and therefore, there is an effect of supporting the shape of the contact portion connected to the introduction portion by an external force so as not to be arbitrarily modified.

Description

Connector pin for printed circuit board

The present invention relates to a coupling pin for a printed circuit board, and more particularly, to a coupling pin for a printed circuit board to firmly support an external force in the coupling pin is coupled to the through-hole of the printed circuit board.

In general, electronic devices used in various industries such as automobiles are applied with various printed circuit boards (PCBs) to help miniaturize devices.

A printed circuit board is formed by printing a circuit line pattern on a electrically insulating substrate using a conductive material such as copper. When another component is connected to the printed circuit board, one side of the connector pin penetrates the circuit line pattern of the printed circuit board. The other component is coupled to the other side of the connector pin. The connector pins and the printed circuit board are firmly and electrically contacted with each other by soldering.

However, the method of fixing the connector pins and the printed circuit board using soldering causes a number of problems such as reduced productivity due to the soldering process. Accordingly, in recent years, a connector pin of an interference fit type that requires no soldering process has been used.

1 is a vertical cross-sectional view illustrating a state where a conventional interference fit connector pin is inserted into a substrate, and FIG. 2 is a view illustrating a state where a conventional interference fit connector pin is inserted into a substrate in a horizontal cross section.

Referring to FIGS. 1 and 2, the connector pin 10 of the conventional interference fitting method includes an introduction part 12 and a first fitting part extending to have a wider width than the introduction part 12 as it moves away from the introduction part 12. (14) and a second fitting portion (16) extending sharply from the end of the first fitting portion (14) toward the opposite side of the inlet portion (12), the first fitting portion (14) and the second The fitting portion 16 is formed with an elliptic slit hole 18. When the connector pin 10 is forcibly fitted into the through hole Pa of the substrate P, the width of the slit hole 18 is narrowly deformed within the range in which the slit hole 18 is not physically destroyed. The outer side of the first fitting portion 14 and the second fitting portion 16 presses the outer circumference of the slit hole 18, so that the connector pin 10 is inserted into the through hole Pa of the substrate P without soldering. It is firmly combined. The contact edges 17 provided at the outer circumferences of the first fitting portion 14 and the second fitting portion 16 are configured to be in electrical contact with each other by contacting the inner circumference of the through hole Pa of the substrate P. do.

On the other hand, the larger the area in which the substrate P and the connector pin 10 are in contact with each other, the increased current capacity is increased. However, in the conventional connector pin 10, as described above, since only the contact edge 17 contacts the substrate P, the contact area is relatively small, so that the connector pin 10 and the substrate P can be stably energized. There is a problem that the current capacity is also lowered.

3 is a cross-sectional view of an introduction of a conventional interference fit connector pin, Figure 4 is a form deformation by external force in the state where the conventional interference fit connector pin is inserted into the printed circuit board by the interference fit method. It is a figure shown for explaining the illustrated example.

Referring to FIG. 3, since the introduction part 12 is formed in a quadrangular shape, the external force applied to one side of the introduction part 12 is not dispersed to the other side, so that the introduction part 12 is vulnerable to external force in structure.

That is, as shown in Figure 4 (a), the upper end of the introduction portion 12 is provided with a connecting portion 19 for coupling with an external electronic component, the first and second fitting portion of the connector pin 10 of the substrate (P) When an external force is applied to the connecting portion 19 while the external electronic component is coupled to the connecting portion 19 in a state of being interposed into the through hole Pa, a great occurrence occurs.

As such, when the external force is applied to the connecting portion 19 in the state in which the first and second fitting portions 14 and 16 are forcibly coupled to the through hole Pa of the substrate P, as shown in FIG. , The introduction portion 12 cannot firmly support the external force transmitted by the connecting portion 19, and the external force is transmitted as it is to the first and second fitting portions 14 and 16 through the introduction portion 12, and thus, the first and second There is a problem that serious deformation occurs in the fitting portion (14, 16).

Domestic Publication No. 10-2008-0065920

An object of the present invention for solving the problems of the prior art as described above is to provide a coupling pin for a printed circuit board so that the introduction portion has a strong strength, so that the introduction portion can firmly support the external force transmitted by the connection portion.

In addition, another object of the present invention is to provide a coupling pin for a printed circuit board to increase the area that the contact portion is in contact with the through-hole, so that the contact portion and the printed circuit board is stable and energized, and to ensure a high current capacity. .

In order to achieve the above object, the present invention provides a coupling for a printed circuit board having a linear introduction part, a connection part integrally formed at one side of the introduction part, and a contact part integrally formed at the other side of the introduction part and inserted into a through hole of the substrate. In the pin, the contact portion is formed in an elongated shape to have a narrower width toward both ends, a slit hole is formed through one surface of the contact portion, the introduction portion is formed to have a narrower width than the contact portion, When the external force is applied to the introduction portion in a direction that is not horizontal to the longitudinal direction of the introduction portion, the introduction portion is provided with a coupling pin for a printed circuit board characterized in that the deformation in the direction of the external force applied.

In addition, a horizontal cross section perpendicular to the longitudinal direction of the introduction portion may include a first introduction surface portion, a second introduction surface portion horizontally spaced from the first introduction surface portion, and one side facing each other with the first introduction surface portion and the second introduction surface portion. A first introduction side portion connecting the first introduction side portion and a second introduction side portion connecting the mutually opposite sides of the first introduction surface portion and the second introduction surface portion, wherein the first introduction side portion is opposite to the second introduction side portion; Is formed convexly and the second introduction side is convexly formed in the opposite direction of the first introduction side, so that a first introduction width between the first introduction side and the second introduction side is It provides a coupling pin for a printed circuit board characterized in that it is formed to have a wider width toward the center direction between the second introduction surface portion.

In addition, a first introduction outer side portion farthest from the second introduction side portion is provided at the center of the first introduction side portion, and the first introduction side portion is provided between the first introduction surface portion and the first introduction outer side portion. And a first introduction side portion provided between the first introduction outer side portion and the first introduction outer side portion and the second introduction surface portion, wherein the first introduction outer side portion is formed at the center of the second introduction side portion. The second introduction outer side which is farthest is provided, and the 2nd introduction side is provided between the 2-1 introduction side part provided between the said 1st introduction surface part, and the said 2nd introduction outer side part, and the said 2nd introduction outer side part, And a 2-2 introduction side portion provided between the second introduction surface portions, and the external force applied to the first introduction outer side portion is dispersed in the directions of the 1-1 introduction side portion and the 1-2 introduction side portion. Plastic deformation of the inlet, The external force applied to the second introduction outer side portion is distributed in the direction of the 2-1 introduction side and the 2-2 introduction side, thereby providing a coupling pin for a printed circuit board, wherein the introduction portion is plastically deformed.

In addition, the first introduction outer side portion and the second introduction outer side portion is provided with a coupling pin for a printed circuit board, characterized in that formed in a curve.

Further, a first introduction corner portion is provided between the first introduction side portion and the first introduction surface portion, and a second introduction corner portion is provided between the first introduction side portion and the second introduction surface portion, and the second introduction side portion A third introduction corner portion is provided between the first introduction surface portion, a fourth introduction corner portion is provided between the second introduction side portion and the second introduction surface portion, and the first introduction corner portion to the fourth introduction corner portion are curved. It provides a coupling pin for a printed circuit board, characterized in that formed.

In addition, a horizontal cross section perpendicular to the longitudinal direction of the contact portion may include a first contact surface portion, a second contact surface portion spaced horizontally from the first contact surface portion, and one side facing each other with the first contact surface portion and the second contact surface portion. A first contact side to connect and a second contact side to connect between the first and second contact surface portions facing each other, wherein the first contact side is convex in an opposite direction to the second contact side portion. And the second contact side portion is convexly formed in the opposite direction of the first contact side portion, the slit hole penetrates from the first contact surface portion in the direction of the second contact surface portion, and with the first contact side portion. The first contact width between the slit holes is formed to have a wider width toward the center direction between the first contact surface portion and the second contact surface portion, the center of the first contact side portion Has a first lateral contact portion farthest from the slit hole, and a second contact width between the second contact side portion and the slit hole is wider toward the center between the first contact surface portion and the second contact surface portion. It is formed to have a width, the center of the second contact side provides a coupling pin for a printed circuit board, characterized in that the second side contact portion furthest from the slit hole is provided.

In addition, a first contact corner portion is provided between the first contact side portion and the first contact surface portion, and a second contact corner portion is provided between the first contact side portion and the second contact surface portion, and the second contact side portion A third contact corner portion is provided between the first contact surface portion, and a fourth contact corner portion is provided between the second contact side portion and the second contact surface portion. When the contact portion is inserted into the through hole, the first contact portion is provided. The corner portion, the fourth contact corner portion, the first side contact portion and the second side contact portion provide a coupling pin for a printed circuit board, characterized in that the electrical contact with the inner circumference of the through hole.

In addition, the first contact corner portion to the fourth contact corner portion and the first side contact portion and the second side contact portion provides a coupling pin for a printed circuit board, characterized in that formed in a curve.

In addition, the third contact width between the first contact side portion and the slit hole and the fourth contact width between the second contact side portion and the slit hole are formed to have a wider width as the introduction portion gets closer. Provides a coupling pin for a printed circuit board.

The present invention is constructed such that the introduction portion has a smaller width than the contact portion, so that when an external force is applied to the introduction portion, before the shape of the contact portion is deformed, the shape of the introduction portion is plastically deformed to absorb the external force, and thus the shape of the contact portion is arbitrarily deformed. There is an effect to prevent.

In addition, since the cross section of the introduction portion is configured to effectively distribute the external force applied to the introduction portion to the periphery, when an external force is applied to the introduction portion, the shape of the introduction portion is easily plastically deformed and easily absorbs the external force, so that the external force is connected to the introduction portion. There is an effect that is not delivered to the contact.

In addition, when the contact portion is forcibly coupled to the through-hole of the printed circuit board, since the corners of the contact portion as well as the first and second lateral contacts also contact the through-holes, the contact area that is in contact with the through-holes increases relatively, The printed circuit board is stably energized and has a high current capacity.

In addition, the corner portion and the first and second lateral contact portions are not formed to be sharply angled, but are formed in a curved shape, so that the contact area with the through-holes is increased, so that the current capacity that can safely flow between the contact portion and the printed circuit board is further increased. There is a big effect.

In addition, since the horizontal sections of the first and second contact side portions have a central portion thicker than both ends, there is an effect that the external pressure due to the inner circumference of the through hole is elastically and firmly supported.

In addition, since the upper end portion is thicker than the lower portion in the vertical section of the first and second contact side portions, the upper side of the first and second contact side portions fitted into the through holes has an effect of firmly maintaining the state fitted in the through holes.

1 is a vertical cross-sectional view illustrating a state in which a connector pin of a conventional interference fitting method is inserted into a substrate.
Figure 2 is a view showing a state in which a conventional interference pin connector pin is inserted into the substrate in a horizontal cross section.
3 is a cross-sectional view illustrating an introduction portion of a conventional interference fit connector pin.
FIG. 4 is a diagram illustrating an example in which a form deformation is generated by an external force in a state where a conventional interference fitting connector pin is inserted into a printed circuit board by an interference fitting method.
5 is a view schematically showing a coupling pin for a printed circuit board according to an exemplary embodiment of the present invention.
6 is a front view schematically showing a coupling pin for a printed circuit board according to a preferred embodiment of the present invention.
FIG. 7 is a cross-sectional view taken along line AA ′ of FIG. 6.
FIG. 8 is a view illustrating an example in which a shape deformation due to external force does not occur in a state in which a coupling pin for a printed circuit board is inserted into a printed circuit board by an interference fit method according to a preferred embodiment of the present invention.
9 is a photographic view illustrating a comparison between before and after an external force is applied to a connection portion of a coupling pin for a printed circuit board according to an exemplary embodiment of the present invention.
FIG. 10 is a cross-sectional view taken along line BB ′ of FIG. 6.
FIG. 11 is a cross-sectional view taken along line CC ′ of FIG. 10.
12 is a vertical cross-sectional view illustrating a state in which a coupling pin for a printed circuit board is inserted into a through hole of a printed circuit board according to a preferred embodiment of the present invention.
FIG. 13 is a horizontal cross-sectional view illustrating a state in which a coupling pin for a printed circuit board is inserted into a through hole of a printed circuit board in accordance with a preferred embodiment of the present invention.

Hereinafter, a coupling pin for a printed circuit board according to a preferred embodiment of the present invention with reference to the accompanying drawings in more detail.

5 is a view schematically showing a coupling pin for a printed circuit board according to a preferred embodiment of the present invention, Figure 6 is a front view schematically showing a coupling pin for a printed circuit board according to a preferred embodiment of the present invention.

5 and 6, the coupling pin 100 for a printed circuit board according to the preferred embodiment of the present invention is integrally formed with an introduction part 120 formed in a linear elongated shape and one side of the introduction part 120. It is configured to have a connecting portion 110 is formed, and the contact portion 130 formed integrally on the other side of the introduction portion 120. The introduction part 120, the connection part 110, and the contact part 130 are formed of a conductive material and are integrally formed with each other. The coupling pin 100 for a printed circuit board has a through hole of a printed circuit board P (shown in FIG. 8) provided with a contact portion 130 in another electronic component in a state in which the connecting portion 110 is electrically coupled to one electronic component. (Pa: shown in Fig. 8) is inserted in the interference fit method so that the contact portion 130 is electrically connected to a circuit line (not shown) formed on the printed circuit board (P). The length of the contact portion 130 can be variously selected as necessary.

And the introduction portion 120 is configured to have a smaller width than the contact portion 130, when the external force is applied to the introduction portion 120 in a direction not horizontal to the longitudinal direction of the introduction portion, before the shape of the contact portion 130 is deformed, As the shape of the inlet 120 is plastically deformed to absorb external force, the shape of the contact portion 130 is supported so as not to be arbitrarily deformed.

Hereinafter, the detailed structure of the introduction portion 120 and the contact portion 130 will be described.

FIG. 7 is a cross-sectional view taken along line AA ′ of FIG. 6.

6 and 7, the introduction part 120 is formed to have an elongated shape in the vertical direction. Looking at a horizontal cross section perpendicular to the longitudinal direction of the introduction part 120, the first introduction surface part 121 is formed to be long and flat. ), A second introduction surface portion 122, a first introduction surface portion 121, and the second introduction surface portion 122 positioned behind the first introduction surface portion 121 so as to be horizontally spaced apart from the first introduction surface portion 121. The first introduction side portion 123 for connecting between the mutually opposite sides of the first introduction surface portion 121 and the second introduction side portion 124 for connecting between the mutually opposite sides of the second introduction surface portion 122 do.

The first introduction side 123 is convex in the opposite direction of the second introduction side 124, and the second introduction side 124 is convex in the opposite direction of the first introduction side 123. In this case, the width between the first introduction side portion 123 and the second introduction side portion 124 is formed to have a wider width toward the center direction between the first introduction surface portion 121 and the second introduction surface portion 122. . In detail, the first introduction surface portion 121 and the second introduction surface portion 122 may be formed on the basis of a horizontal cross section of the introduction portion 120, that is, a horizontal cross section cut to be perpendicular to the longitudinal direction of the introduction portion 120. The first width 126 from the center of the first introduction side portion 123 located at the center to the center of the second introduction side portion 124 is the first introduction surface portion 121 or the second introduction surface portion 122. It is formed to have a wider width than the second width from the end of the first introduction side portion 123 to the end of the second introduction side portion 124. A first introduction outer side portion 123a is provided at the center of the first introduction side portion 123, and a second introduction outer side portion 124a is provided at the center of the second introduction side portion 124. The first and second introduction outer sides are formed in a curved or straight line.

The first introduction side portion 123 includes a first introduction side portion 123-1 provided between the first introduction surface portion 121 and the first introduction outer side portion 123a, and the first introduction outer side portion. And a first 1-2 introduction side portion 123-2 provided between 123a and the second introduction surface portion 122, and the second introduction side portion 124 includes the first introduction surface portion 121 and the The 2-1 introduction side part 124-1 provided between the 2nd introduction outer side parts 124a, and the 2nd-2 provided between the 2nd introduction outer side parts 124a and the 2nd introduction surface part 122 2 includes an introduction side portion 124-2. In addition, the first introduction side 123-1 and the second introduction side 123-2 are inclined toward the first and second introduction surface parts 121 and 122 on both sides of the first introduction outer side 123a. 2-1 introduction side part 124-1 and 2-2 introduction side part 124-2 are formed in the both sides of the 2nd introduction outer side part 124a, and the 1st, 2nd introduction surface part 121 and 122 direction. It is formed to be inclined.

Accordingly, the external force applied to the first introduction outer side portion 123a is easily dispersed in the directions of the first introduction side portion 123-1 and the second introduction side portion 123-2, and the second introduction outer portion 123a. Since the external force applied to the side portion 124a is easily dispersed in the directions of the 2-1 introduction side portion 124-1 and the 2-2 introduction side portion 124-2, when the external force is applied to the introduction portion 120, the introduction portion While the shape of the 120 is easily plastically deformed, the external force can be easily absorbed, so that the external force is not transmitted to the contact portion 130 connected to the introduction part 120.

In addition, a first introduction corner portion 125a is provided between the first introduction side portion 123 and the first introduction surface portion 121, and between the first introduction side portion 123 and the second introduction surface portion 122. A second introduction corner portion 125b is provided, and a third introduction corner portion 125c is provided between the second introduction side portion 124 and the first introduction surface portion 121, and the second introduction side portion 124 and the second introduction corner portion 125b are provided. A fourth introduction corner portion 125d is provided between the two introduction surface portions 122. In this case, the first introduction corner portion 125a to the fourth introduction corner portion 125d are formed in a curved line. Thus, for example, the external force distributed in the directions of the first-introduction side portion 123-1 and the second-introduction side portion 123-2 includes the first introduction corner portion 125a and the second introduction corner portion ( 125b) can be absorbed while being transmitted in all directions in the direction of the first and second introduction surface portions 121 and 122 without being cut along.

FIG. 8 is a view illustrating an example in which a shape deformation due to external force does not occur in a state in which a coupling pin for a printed circuit board is inserted into a printed circuit board by an interference fit method according to a preferred embodiment of the present invention.

Referring to FIG. 8, the introduction part 120 of the coupling pin 100 for a printed circuit board according to the preferred embodiment of the present invention is formed in a generally hexahedral shape, and the first introduction outer side part 123a is provided on both sides of the first part. -1 introduction side portion 123-1 and 1-2 introduction side portion 123-2 are formed obliquely, and the 2-1 introduction side portion 124-1 and both sides of the second introduction outer side portion 124a and The 2-2nd introduction side part 124-2 is obliquely formed.

In addition, when an external force is applied to the connection part 110 in a state where the contact part 130 is forcibly fitted into the through hole Pa of the printed circuit board P, the external force applied to the connection part 110 is transmitted to the inlet part 120. At this time, the external force transmitted to the first introduction outer side portion 123a of the introduction portion 120 is introduced into the first introduction side portion 123-1 and the first introduction side portion 123-1 inclinedly connected to the first introduction outer side portion 123a. It is easily dispersed in the side portion 123-2 to plastically deform the introduction portion 120. As such, since the external force applied to the connection part 110 is absorbed by the introduction part 120 while deforming the shape of the introduction part 120, the external force is no longer transmitted to the contact part 130, even if an external force is applied to the connection part 110. There is an effect that the shape of the contact portion 130 is prevented from being arbitrarily deformed.

9 is a photographic view illustrating a comparison between before and after an external force is applied to a connection portion of a coupling pin for a printed circuit board according to an exemplary embodiment of the present invention.

9 (a) is a state before external force is applied to the connecting portion 110 of the coupling pin 100 for a printed circuit board, Figure 9 (b) is a connection portion 110 of the coupling pin 100 for a printed circuit board. ) Is the state after an external force is applied. As shown in the figure, the contact portion 130 can be seen that there is little change in form before and after the external force is applied to the connecting portion 110 of the coupling pin 100 for the printed circuit board.

FIG. 10 is a cross-sectional view taken along line BB ′ of FIG. 6.

6 and 10, the contact portion 130 is formed in a long shape in the vertical direction, on the basis of the front, is formed to have a narrower width toward both ends in the longitudinal direction, wider width toward the center in the longitudinal direction It is formed to have. And the longitudinal upper end of the contact portion 130 is connected to the introduction portion 120 and the longitudinal lower end is sharply formed.

Looking at the detailed structure of the contact portion 130, the first contact surface portion 131 is formed flat in the front, but is formed in a long shape along the longitudinal direction, the first contact surface portion so as to be horizontally spaced apart from the first contact surface portion 131 The second contact surface part 132 located behind the 131, the first contact side part 133, and the first contact side part 133, which connects the mutually opposite sides of the first contact surface part 131 and the second contact surface part 132. It includes a second contact side portion 134 connecting between the first contact surface portion 131 and the other side of the second contact surface portion 132 facing each other. In addition, the slit hole 130a penetrates from the first contact surface portion 131 toward the second contact surface portion 132. The slit hole 130a is formed in an elliptical shape along both longitudinal directions of the contact portion 130.

The first contact side 133 is convex in the opposite direction of the second contact side 134, and the second contact side 134 is convex in the opposite direction of the first contact side 133. In this case, the width between the first contact side portion 133 and the slit hole 130a is formed to have a wider width toward the center direction between the first contact surface portion 131 and the second contact surface portion 132. The width between the second contact side portion 134 and the slit hole 130a is also formed to have a wider width toward the center direction between the first contact surface portion 131 and the second contact surface portion 132.

In detail, the first contact surface part 131 and the second contact surface part 132 based on the horizontal cross section of the contact part 130, that is, the horizontal cross section cut out to be perpendicular to the longitudinal direction of the contact part 130. The first-first contact width 140 from the center of the first contact side portion 133 positioned from the center to the slit hole 130a meets the first contact surface portion 131 or the second contact surface portion 132. It is formed to have a wider width than the first 1-2 contact width 141 from the end of the first contact side portion 133 to the slit hole 130a. The first side contact portion 133a is provided at the center of the first contact side portion 133 farthest from the slit hole 130a. The first side contact portion 133a is formed to be rounded in a curve so as to widen the contact area with the through hole Pa, which will be described later.

In addition, based on the horizontal cross section of the contact portion 130, the slit hole 130a is formed from the center of the second contact side portion 134 located at the center between the first contact surface portion 131 and the second contact surface portion 132. The 2-1st contact width 142 up to 2-2 from the end of the second contact side portion 134 that meets the first contact surface portion 131 or the second contact surface portion 132 to the slit hole 130a. It is formed to have a wider width than the contact width 143. The second side contact part 134a is provided at the center of the second contact side part 134 farthest from the slit hole 130a. The second side contact portion 134a is formed to be rounded in a curve so as to widen the contact area with the through hole Pa.

As described above, since the horizontal cross sections of the first and second contact side parts 133 and 134 protrude convexly toward the longitudinal center direction, the center portions of the first and second contact side parts 133 and 134 are formed in the first and second contact side parts ( Compared with the ends of 133 and 134, a force that can elastically withstand a strong external pressure is increased. That is, if the cross-sectional thickness is small, the permanent deformation is easily bent by external pressure. The present invention has a large cross-sectional area of the central portion of the first and second contact side portions 133 and 134, so that the contact portion 130 is formed on the substrate. When forcibly fitted to the through hole Pa, the center portion of the first and second contact side portions 133 and 134 has an effect of elastically and firmly supporting the pressure due to the inner circumference of the through hole Pa. . This will be described again in FIG. 13.

On the other hand, based on the horizontal cross section of the contact portion 130, a first contact corner portion 136a is provided between the first contact side portion 133 and the first contact surface portion 131, the first contact side portion 133 And a second contact corner portion 136b between the second contact surface portion 132 and a third contact corner portion 136c between the second contact side portion 134 and the first contact surface portion 131. The fourth contact corner portion 136d is provided between the second contact side portion 134 and the second contact surface portion 132. In addition, the first contact corner portions 136a to 136d are formed to be rounded in curves so as to widen the contact area with the through holes Pa.

FIG. 11 is a cross-sectional view taken along the line CC ′ of FIG. 10.

Referring to FIG. 11, the first contact side 133 and the slit hole 130a are formed to have a wider width as they approach the introduction part 120, and are formed to have a narrower width as they move away from the introduction part 120. . Similarly, between the second contact side portion 134 and the slit hole 130a is formed to have a wider width as it is closer to the introduction portion 120, and is formed to have a narrower width as it is farther from the introduction portion 120. In detail, the third portion between the upper end portion of the slit hole 130a positioned closest to the introduction portion 120 and the first contact side portion 133 on the basis of the vertical direction horizontal to the longitudinal direction of the contact portion 130. The -1 contact width 144 is formed to have a wider width than the 3-2 contact width 145 between the lower end of the slit hole 130a farthest from the inlet 120 and the first contact side 133. In addition, the fourth-first contact width 146 between the upper end of the slit hole 130a and the second contact side 134 positioned closest to the inlet 120 may be the slit hole 130a farthest from the inlet 120. It is formed to have a wider width than the 4-2 contact width 147 between the lower end of the second contact portion and the second contact side 134.

As such, the vertical cross sections of the first and second contact side parts 133 and 134 are formed to become thicker toward the upper side, that is, the introduction part 120, so that the lower side of the first and second contact side parts 133 and 134 is the first and second contacts. Compared with the upper side of the side parts 133 and 134, a force capable of elastically supporting strong external pressure is increased. This will be described again in FIG. 12.

12 is a vertical cross-sectional view showing a state in which the coupling pin for the printed circuit board is coupled to the through-hole of the printed circuit board according to a preferred embodiment of the present invention, Figure 13 is according to a preferred embodiment of the present invention A diagram showing a state in which a coupling pin for a printed circuit board is inserted into a through hole of a printed circuit board in a horizontal cross section.

First, referring to FIG. 12, the coupling pin 100 for a printed circuit board is inserted into the through hole Pa of the printed circuit board P and is forcibly fitted. In this case, the diameter of the through hole Pa is formed to be smaller than the separation distance between the first contact side part 133 and the second contact side part 134, so that when the contact part 130 is inserted into the through hole Pa, As the first contact side portion 133 and the second contact side portion 134 are forcibly elastically deformed in the slit hole 130a direction, the width between the slit holes 130a is narrowed.

In this case, since the vertical cross-section perpendicular to the longitudinal direction of the first and second contact side parts 133 and 134 is formed to become thicker toward the upper direction, that is, the inlet part 120 direction, the first and second contact side parts 133 and 134 are formed. The lower side is relatively easily elastically deformed and easily inserted into the through hole Pa, while the upper side of the first and second contact side parts 133 and 134 is relatively easy to elastically deformed and is forcibly inserted into the through hole Pa. The upper side of the first and second contact side parts 133 and 134 fitted into the through hole Pa has an effect of firmly holding the fitted state into the through hole Pa.

Subsequently, referring to FIG. 13, when the contact portion 130 of the coupling pin 100 for the printed circuit board is inserted into the through hole Pa of the printed circuit board P and is pressed together, the inside of the through hole Pa is prevented. The peripheral edge and the outer circumference of the contact portion 130, that is, the first contact corner portion 136a to the fourth contact corner portion 136d are electrically coupled while being in contact with each other. In this case, the first and second side contact portions 133a and 134a protruding in the through hole Pa direction are also electrically coupled to each other while contacting the inner circumference of the through hole Pa. As such, the present invention, as well as the first contact corner portion 136a to the fourth contact corner portion 136d, as well as the first and second side contact portions 133a and 134a also contact the through hole Pa, the through hole Pa. The contact area is in contact with the increase, thereby, the through-hole (Pa) of the contact portion 130 and the printed circuit board (P) is energized stably, there is an effect to ensure a high current capacity.

In addition, since the first contact corner portions 136a to 4th contact corner portions 136d and the first and second side contact portions 133a and 134a are not formed to be sharply angled, but are curved, the through holes Pa ) Has an effect of increasing the current capacity that can safely flow between the contact portion 130 and the through-hole (Pa).

On the other hand, the horizontal cross-sections of the first and second contact side portions 133 and 134 protrude convexly toward the longitudinal center direction, that is, the first and second side contact portions 133a and 134a, so that the first and second contact side portions ( The central portion of the 133 and 134 has a greater force that can elastically withstand strong external pressure as compared with both ends of the first and second contact side portions 133 and 134. Therefore, when the contact portion 130 is forcibly coupled to the through-hole Pa of the substrate, the first and second lateral contact portions 133a and 134a are elastically deformed and exert pressure by the inner circumference of the through-hole Pa, The contact portion 130 fitted into the through hole Pa does not fall out arbitrarily from the through hole Pa even when external pressure is applied thereto, thereby being firmly fitted into the through hole Pa.

Although the present invention has been described in detail in the above embodiments, it is obvious that the present invention is not limited thereto, and it is apparent to those skilled in the art that various changes and modifications can be made within the scope of the technical idea of the present invention. The technical idea should also be regarded as belonging to the present invention if it belongs to the scope of the claims.

100: coupling pin
110: connecting portion 120: inlet portion
121: first introduction surface portion 122: second introduction surface portion
123: first introduction side 123-1: 1-1 introduction side
123-2: 1-2 introduction side 123a: First introduction outer side
124: 2nd introduction side part 124-1: 2-1 introduction side part
124-2: 2-2 introduction side part 124a: 2nd introduction outer side part
125a: first introduction corner portion 125b: second introduction corner portion
125c: third introduction corner portion 125d: fourth introduction corner portion
126: first width 127: second width
130: contact portion 130a: slit hole
131: first contact surface portion 132: second contact surface portion
133: first side contact portion 133a: first side contact portion
134: second side contact portion 134a: second side contact portion
136a: first contact corner portion 136b: second contact corner portion
136c: third contact corner portion 136d: fourth contact corner portion
140: 1-1st contact width 141: 1-2th contact width
142: 2-1 contact width 143: 2-2 contact width
144: third-1 contact width 145: third-2 contact width
146: fourth contact width 147: fourth contact width

Claims (9)

In the coupling pin for a printed circuit board having a linear introduction portion, a connecting portion formed integrally on one side of the introduction portion, and a contact portion formed integrally on the other side of the introduction portion and inserted into the through hole of the substrate,
The contact portion is formed in a long shape, but is formed to have a narrow width toward both ends, the slit hole is formed through one surface of the contact portion,
The introduction portion is formed to have a narrower width than the contact portion,
When an external force is applied to the introduction portion in a direction that is not horizontal to the longitudinal direction of the introduction portion, the introduction portion is deformed in a direction to which the external force is applied,
A horizontal cross section perpendicular to the longitudinal direction of the introduction portion connects a first introduction surface portion, a second introduction surface portion horizontally spaced from the first introduction surface portion, and one side facing each other with the first introduction surface portion and the second introduction surface portion. It includes a first introduction side portion and the second introduction side portion for connecting between the mutually opposite sides of the first introduction surface portion and the second introduction surface portion,
The first introduction side is formed convexly in the opposite direction of the second introduction side,
The second introduction side is formed convexly in the opposite direction of the first introduction side,
The first introduction width between the first introduction side portion and the second introduction side portion is formed to have a wider width toward the center direction between the first introduction surface portion and the second introduction surface portion,
A first introduction outer side portion furthest from the second introduction side portion is provided at the center of the first introduction side portion, and the first introduction side portion is provided between the first introduction surface portion and the first introduction outer side portion. 1-1 an introduction side part, and a 1-2 introduction side part provided between the first introduction outer side part and the second introduction surface part,
A second introduction outer side portion furthest from the first introduction outer side portion is provided at the center of the second introduction side portion, and the second introduction side portion is provided between the first introduction surface portion and the second introduction outer side portion. A 2-1 introduction side portion, and a 2-2 introduction side portion provided between the second introduction outer side portion and the second introduction surface portion,
The external force applied to the first introduction outer side portion is plastically deformed the introduction portion while being distributed in the directions of the 1-1 introduction side and the 1-2 introduction side,
The external force applied to the second introduction outer side portion is plastically deformed the introduction portion while being distributed in the direction of the 2-1 introduction side and the 2-2 introduction side,
The first introduction outer side and the second introduction outer side is formed in a curve,
Both sides of the first introduction outer side portion are inclinedly connected to the 1-1 introduction side portion and the 1-2 introduction side portion,
Both sides of the second introduction outer side portion is coupled to the 2-1 introduction side and the 2-2 introduction side inclined connection pin for the printed circuit board.
delete delete delete The method of claim 1,
A first introduction corner is provided between the first introduction side and the first introduction surface;
A second introduction corner portion is provided between the first introduction side portion and the second introduction surface portion.
A third introduction corner is provided between the second introduction side and the first introduction surface;
A fourth introduction corner is provided between the second introduction side and the second introduction surface;
The first introduction corner portion to the fourth introduction corner portion is a coupling pin for a printed circuit board, characterized in that formed in a curve.
The method of claim 1,
The horizontal cross section perpendicular to the longitudinal direction of the contact portion connects between a first contact surface portion, a second contact surface portion horizontally spaced from the first contact surface portion, and one side facing each other with the first contact surface portion and the second contact surface portion. A first contact side portion and a second contact side portion connecting between the first and second contact surface portions facing each other;
The first contact side is formed convexly in the opposite direction of the second contact side,
The second contact side is formed to be convex in an opposite direction to the first contact side,
The slit hole penetrates from the first contact surface portion toward the second contact surface portion,
The first contact width between the first contact side portion and the slit hole is formed to have a wider width toward the center direction between the first contact surface portion and the second contact surface portion, and the slit at the center of the first contact side portion. The first lateral contact portion furthest from the hole is provided,
The second contact width between the second contact side portion and the slit hole is formed to have a wider width toward the center direction between the first contact surface portion and the second contact surface portion, and the slit at the center of the second contact side portion. A coupling pin for a printed circuit board, characterized in that the second side contact portion furthest from the hole is provided.
The method of claim 6,
A first contact corner portion is provided between the first contact side portion and the first contact surface portion.
A second contact corner portion is provided between the first contact side portion and the second contact surface portion.
A third contact corner portion is provided between the second contact side portion and the first contact surface portion.
A fourth contact corner is provided between the second contact side and the second contact surface;
When the contact portion is inserted into the through hole, the first contact corner portion to the fourth contact corner portion, and the first side contact portion and the second side contact portion is in electrical contact with the inner circumference of the through hole Coupling pins for printed circuit boards.
The method of claim 7, wherein
And the first contact corner portion to the fourth contact corner portion, the first lateral contact portion and the second lateral contact portion are curved.
The method of claim 7, wherein
A third contact width between the first contact side portion and the slit hole and a fourth contact width between the second contact side portion and the slit hole are formed to have a wider width as they approach the inlet portion Bonding pins for the board.

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