TW201517414A - Electrical connector for circuit board and electrical connector installation body - Google Patents

Abstract

The invention provides an electrical connector for a circuit board and an electrical connector installation body. The electrical connector cannot be enlarged in a terminal arrangement direction and can carry out reliable connection of a connection section of each terminal and a grounding pin section of a shield section with corresponding bonding pads. A grounding connection section (24G) of a grounding terminal (20G) is located between the signal connection sections (24S) of two adjacent signal terminals (20) in the terminal arrangement direction. The grounding pin section (38) of the shield section (30) is connected with a bonding pad for grounding and of the circuit board in a position closer than the above signal connection section (24S) and the above grounding section (24) in the connector width direction, is located in a region between the signal connection sections (24S) at two sides of the grounding connection section (24G) corresponding to the grounding pin section (38), and has an overlapping range with the grounding connection section (24G) in the terminal arrangement direction.

Description

Electrical connector for circuit substrate and electrical connector assembly

The present invention relates to an electrical connector for a circuit board disposed on a circuit board, and an electrical connector assembly in which the electrical connector for the circuit board is mounted on a circuit board.

As such a connector, for example, an electrical connector for a circuit board disclosed in Patent Document 1 is known. Patent Document 1 discloses an electrical connector for a circuit board that is disposed on a circuit board and that is fitted with a connector to be connected from above. The electrical connector for a circuit board is a housing having a thin substantially rectangular parallelepiped shape, a plurality of terminals, and two casings (shield members) which are longitudinally oriented in a direction parallel to the circuit substrate. And extending; the plurality of terminals are arranged and held in the casing with the longitudinal direction as a terminal arrangement direction; and the two casings are attached to the casing.

The casing has two side walls facing each other in a connector width direction (a direction perpendicular to the terminal arrangement direction) extending in the terminal arrangement direction, and each side wall is arranged at equal intervals in the plurality of terminals It is maintained in the direction in which the above terminals are arranged. Terminal, all The connection portion formed in the same shape and connected to the pad formed on the circuit board extends outward at the position of the same height as the bottom surface of the casing toward the outer side in the connector width direction.

The plurality of terminals arranged in the respective side walls are used as the ground terminals for the two terminals in the central region in the terminal arrangement direction, and the other terminals are used as the signal terminals. The connection portion of the signal terminal is a signal connection portion, and the connection portion of the ground terminal is used as a ground terminal, and is soldered to the corresponding pad, that is, a signal pad or a ground pad.

The casing has a side plate portion and a grounding leg portion extending in a terminal arrangement direction so as to cover an outer side surface of the side wall over a range of terminal arrangement; the grounding leg portion is plural in a direction in which the terminal is arranged The position extends from the lower edge of the side plate portion and is bent outward in the connector width direction at the same height as the connection portion of the terminal. The grounding leg portion is disposed at both sides of the terminal arrangement range and the central region within the terminal arrangement range in the terminal arrangement direction, and is disposed at the same position as the connection portion of the terminal in the connector width direction. That is, it is arranged in the same row as the connecting portion. The grounding leg portion disposed in the central region is located adjacent to the two grounding connecting portions disposed adjacent to each other in the central region, and is adjacent to the grounding connecting portion. Therefore, when the electrical connector for the circuit board is mounted on the circuit board, the grounding leg portion and the two grounding connection portions on both sides of the circuit board are connected to a common cover of the leg portions and the connecting portion. Grounding pad.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Special Opening 2008-218095

In the electrical connector for a circuit board of Patent Document 1, since two ground terminals are required in the central portion of the terminal arrangement range, the number of ground terminals is one more than that in the case where only one ground terminal is provided in the central portion. Accordingly, it is necessary to add a signal terminal at other positions in the terminal arrangement direction, which causes the connector to become larger in the terminal arrangement direction.

When the number of terminals of the electrical connector for a circuit board of Patent Document 1 is reduced by one, and only one ground terminal of the central region is provided, the connector can be miniaturized in the terminal arrangement direction. However, in this case, since the grounding leg of the casing is located between the grounding terminal and the signal terminal adjacent to the grounding terminal in the central region, the signal connecting portion of the grounding leg and the signal terminal is excessive. Close. Therefore, on the circuit board, the ground pad connected to the ground leg portion and the signal pad connected to the signal connection portion are formed in an excessively close position, so that the connector is in the connector. During the assembly, there is a fear that the soldering of the pads will be connected to each other, causing the two pads to be electrically shorted to each other.

The present invention has been made in view of the above circumstances, and an object of the invention is to provide a connection between a connection portion of each terminal and a grounding leg portion of a shield member without correspondingly increasing the size of the terminal arrangement direction. The electrical circuit board and the electrical connector assembly of the circuit board of the pad.

<First invention>

An electrical connector for a circuit board according to a first aspect of the present invention is an electrical connector for a circuit board disposed on a circuit board, comprising: a case, a plurality of terminals, and a shield member, the case being relative to the circuit The mounting surface of the substrate extends in a direction parallel to the longitudinal direction; the plurality of terminals are arranged and held in the housing in a direction in which the longitudinal direction is the terminal arrangement direction; and the shield member is attached to the housing, The housing has a bottom wall and a side wall extending along the terminal arrangement direction with respect to a mounting surface of the circuit board; the side wall is from the bottom of the connector width direction perpendicular to the terminal arrangement direction Two side portions of the wall are erected and extend along the terminal arrangement direction, and the plurality of terminals are mixed with a signal terminal and a ground terminal and are arranged and held on the side wall. The signal terminal has a signal connection portion, and the signal connection portion is for a signal pad connected to the circuit board is exposed from the bottom wall, and the ground terminal has a ground connection portion, and the ground connection portion The shield member has a side plate portion and a grounding leg portion that are connected to the ground pad of the circuit board, and the side plate portion is located outside the terminal in the connector width direction along the side wall. The outer side surface extends over the terminal arrangement range; the grounding leg portion extends from the side plate portion toward the circuit board at a position corresponding to the ground connection portion of the ground terminal in the terminal arrangement direction.

In the electrical connector for a circuit board, in the present invention, the ground connection portion of the ground terminal is located between the signal connection portions of the two signal terminals adjacent to each other in the terminal arrangement direction, and the shielding member The grounding leg portion is connected to the ground pad for the circuit board at a position outside the signal connecting portion and the ground connecting portion in the connector width direction, and is located at a ground connection corresponding to the grounding leg portion. The region between the signal connection portions on both sides of the portion has a range overlapping with the ground connection portion in the terminal arrangement direction.

In the electrical connector for a circuit board as in the above-mentioned patent document 1, since the number of terminals to be arranged is large, it is necessary to have a high density of terminals in the same direction in order to avoid a tendency to easily increase in the terminal arrangement direction. The resulting miniaturization. In the present invention, the grounding leg portion of the shield member is connected to the grounding pad of the circuit board at a position outside the signal connecting portion and the ground connecting portion in the width direction of the connector. As a result, since it is not necessary to position the grounding leg portions of the shield member between the terminals adjacent in the terminal arrangement direction, the distance between the terminals can be made close to each other. Therefore, the number of signal terminals can be increased without increasing the size of the connector in the terminal arrangement direction. Further, in the case where it is not necessary to increase the number of signal terminals, the connectors can be miniaturized in the terminal arrangement direction by making the terminals closely spaced from each other.

Further, in the present invention, the grounding leg portion of the shield member is a connecting portion that does not become excessively close to the terminal in the terminal arrangement direction. That is, it is not necessary to set both of the connection portions of the two terminals that are too close to the grounding leg on both sides of the grounding leg of the shield member as in the prior art. Ground connection. Therefore, it is possible to reduce one grounding terminal, and this can miniaturize the connector in the terminal arrangement direction. Further, in the present invention, since the grounding leg portion of the shield member has a range overlapping with the ground terminal in the terminal arrangement direction, the connector can be further reduced in the terminal arrangement direction in accordance with the portion of the repeating range. Chemical.

Further, in the electrical connector for a circuit board of the present invention, the grounding leg portion of the shield member is located on the outer side of the ground connection portion corresponding to the grounding leg portion in the connector width direction, and in the terminal arrangement direction, The signal connecting portions disposed adjacent to both sides of the ground connecting portion are located in a region between each other. Therefore, even if the grounding leg portion is disposed so as to be close to the grounding connection portion of the grounding terminal in the connector width direction, the signal connecting portions on the both sides are not excessively approached. Therefore, in the circuit board, the ground pad corresponding to the ground leg portion is close to the ground pad corresponding to the ground connection portion in the connector width direction, and is respectively connected to the signal connection portions on the both sides. Between the corresponding signal pads, a sufficient distance can be ensured in the direction in which the terminals are arranged. As a result, when the connector is assembled, there is no fear that the ground pad corresponding to the ground leg portion and the two signal pads are erroneously soldered. Further, even in the case where the ground pad that is close to each other, that is, the ground pad corresponding to the ground leg portion and the ground pad corresponding to the ground connection portion are soldered, this is equivalent to a ground pad. So there won't be any problems. Therefore, the connection portion of each terminal and the grounding leg portion of the shield member can be surely connected to the corresponding pads.

Further, in the present invention, it is possible in the connector width direction The grounding leg is placed close to the connection portion of the terminal. Therefore, the grounding leg portion is located outside the connecting portion of the terminal in the connector width direction, and the enlarged portion can be made larger even if the size of the connector becomes slightly larger in the connector width direction than in the related art. Partial inhibition is minimal.

In the present invention, the ground connection portion of the ground terminal and the grounding leg portion of the shield member may be disposed to be shifted from each other so as to have a part of the overlapping range in the terminal arrangement direction. In this manner, by disposing the ground connection portion and the grounding leg portion, even when the electrical connector for the circuit board is viewed from the outside in the width direction of the connector, the grounding leg portion can be visually observed. Therefore, before the socket connector 1 is mounted on the circuit board, it can be easily visually confirmed whether or not both of the ground leg portion and the ground connection portion are at the same height and are arranged flat. Further, after the connector is mounted on the circuit board, it is easy to visually confirm whether or not both of the ground leg portion and the ground connection portion are properly soldered to the ground pad of the circuit board.

The ground connection portion of the ground terminal and the grounding leg portion of the shield member may be connected to a pad commonly used as a respective ground pad.

<Second invention>

An electrical connector assembly according to a second aspect of the present invention is characterized in that the circuit board is electrically connected to a circuit board.

As described above, in the present invention, since the grounding leg portion of the shield member is located outside the connecting portion of the terminal in the width direction of the connector, it is not necessary to cause the grounding leg portion to be located between the terminals adjacent in the terminal arrangement direction. Corresponding to this, the terminals can be closely spaced from each other. Therefore, the number of signal terminals can be increased without increasing the size of the connector in the terminal arrangement direction. Further, in the case where the number of signal terminals is not required to be increased, the connectors can be miniaturized in the terminal arrangement direction by making the terminals closely spaced from each other. Further, since the grounding leg portion has a range in which the terminal arrangement direction overlaps with the ground connection portion of the ground terminal, the connector can be miniaturized in the terminal arrangement direction.

In addition, since the grounding leg portions of the shielding member are located in the region between the signal connecting portions, the signal connecting portion is located on both sides of the grounding connecting portion corresponding to the grounding leg portion, so even if the grounding leg portion is connected In the width direction of the connecting portion of the terminal, a sufficient distance can be ensured between the grounding leg and the signal connecting portion of the signal terminal in the terminal arrangement direction, and the connecting portion of each terminal and the shielding member can be grounded. The feet are securely connected to the respective pads. Further, by bringing the grounding leg portion closer to the terminal connecting portion in the connector width direction, the size of the connector can be minimized in the connector width direction.

1‧‧‧Socket connector

24S‧‧‧ Signal Connection

10‧‧‧Socket side housing

24G‧‧‧Ground connection

11‧‧‧ bottom wall

30‧‧‧Shielding members

14‧‧‧ side wall

32‧‧‧ Side panel

20‧‧‧ terminals

38‧‧‧Narrow grounding foot (grounding foot)

20S‧‧‧ signal terminal

PS‧‧‧ Signal pad

20G‧‧‧ grounding terminal

PG‧‧‧ Grounding mat

[Fig. 1] is a perspective view showing a socket connector according to an embodiment of the present invention and a plug connector as a target connector, and showing the connection The state before the connector is fitted.

[Fig. 2] is a perspective view showing a state before mounting of the shield member of the receptacle connector of Fig. 1.

[Fig. 3] is a cross-sectional view of the socket connector of Fig. 1 perpendicular to the direction in which the terminals are arranged, (A) showing a cross section at the position of the signal terminal, and (B) showing the ground terminal. The cross section of the position, (C) is a cross section showing the position of the contact piece of the shield member.

[Fig. 4] A side view of a part of the receptacle connector of Fig. 1 viewed in the width direction of the connector.

[Fig. 5] is a cross-sectional view of the socket connector and the plug connector in a state in which the connector is fitted, which is perpendicular to the terminal arrangement direction, and (A) shows a cross section at the position of the signal terminal, (B) A cross section showing the position of the ground terminal, and (C) is a cross section showing the position of the contact piece of the shield member.

[Fig. 6] (A) shows a modification of the embodiment, and (B) shows a cross-sectional view showing another different modification, showing the position of the ground terminal in the terminal arrangement direction of the connector with respect to The terminal arrangement direction is a cross section in a vertical direction.

Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

1 is a perspective view showing a socket connector 1 according to an embodiment of the present invention together with a plug connector 2 as a target connector, and Displays the status before the connector is fitted. Fig. 2 is a perspective view showing a state before the shield member 30 of the receptacle connector 1 of Fig. 1 is mounted. Fig. 3 is a cross-sectional view of the socket connector 1 of Fig. 1 perpendicular to the terminal arrangement direction, (A) showing a cross section at the position of the signal terminal 20S, and (B) showing the ground terminal 20G. The cross section of the position, (C) is a cross section showing the position of the contact piece 35 of the shield member 30.

The socket connector 1 of the present embodiment and the plug connector 2 as the target connector of the receptacle connector 1 are respectively disposed on the circuit board connector on the mounting surface of a different circuit board (not shown). Further, a connector assembly in which the direction perpendicular to the mounting surface of each circuit board (the upper and lower directions in the first drawing) is used as the insertion/removal direction is formed.

As shown in FIG. 1, the socket connector 1 has a socket-side housing 10 having a substantially rectangular parallelepiped shape, a plurality of terminals 20, and a shielding member 30, and the plurality of terminals 20 are connected to the socket-side housing 10. The long-side direction is the terminal arrangement direction, and the socket-side housing 10 is formed in two rows and arranged at equal intervals; the shield member 30 is attached to the socket so as to cover the peripheral wall 13 of the socket-side housing 10. Side casing 10. The receptacle connector 1 is mounted on a circuit board in the posture shown in Fig. 1.

The socket-side housing 10 is made of an electrically insulating material such as resin, and extends in a direction parallel to the mounting surface of the circuit board as a longitudinal direction (terminal arrangement direction). The socket-side housing 10 has a bottom wall 11, a protruding wall portion 12, and a frame-shaped peripheral wall 13 which is parallel with respect to the mounting surface (refer to FIG. 3(C)); In the first drawing, the protruding wall portion 12 is erected upward from the bottom wall 11 and extends in the terminal arrangement direction. The peripheral wall 13 is erected upward from the bottom wall 11 and surrounds the protruding wall portion 12. The peripheral wall 13 has a pair of side walls 14 and a pair of end walls 15 extending along the terminal arrangement direction; the end walls 15 extending in a connector width direction perpendicular to the terminal arrangement direction The ends of the pair of side walls 14 are joined to each other. An annular space that opens upward between the protruding wall portion 12 and the peripheral wall 13 is formed as a receiving portion 16 for receiving the peripheral wall 43 as a fitting portion of the plug connector 2.

In the socket-side connector 10, the terminal accommodating portion 17 for holding the terminal 20 is formed in two rows symmetrically with respect to the center line in the longitudinal direction of the protruding wall portion 12 in the width direction of the connector, and is arranged at equal intervals. In the direction of the terminal arrangement. As shown in Fig. 3 (A) and (B), each terminal accommodating portion 17 has a vertical groove portion 17A, a lateral groove portion 17B, and a terminal holding hole portion 17C which is a side surface of the protruding wall portion 12. The traverse portion extends in the vertical direction. The lateral groove portion 17B extends through the bottom wall 11 in the vertical direction and extends in the connector width direction. The terminal holding hole portion 17C penetrates the side wall 14 in the vertical direction.

As shown in Fig. 1, the outer side surface of the end wall 15 which is located on the outer side surface of the outer side surface of the side wall 14 of the socket side casing 10 is formed with a shield member protruding from the lower portion of the outer side surface toward the connector width direction. In the holding portion 15A-1, the shield member holding portion 15A-1 is for holding the shield member 30 to be described later. In both side faces of the shield member holding portion 15A-1 (surfaces perpendicular to the terminal arrangement direction), shield members are respectively formed The groove 15A-2 is held, and the shield member holding groove 15A-2 extends from the side surface and extends in the vertical direction.

Further, on the inner side surface of the side wall 14, at a position outside the terminal arrangement range in the terminal arrangement direction, a contact piece accommodation groove 14A is formed over the upper surface or the inner side surface of the side wall 14, and the contact piece accommodation groove 14A is for receiving The contact piece 35 of the shield member 30 to be described later (see also FIG. 3(C)). As shown in Fig. 3(C), the contact piece accommodation groove 14A has a lateral groove portion 14A-1 and a vertical groove portion 14A-2 which is immersed from the upper surface of the side wall 14, and the vertical groove portion 14A The -2 is immersed from the inner side of the side wall 14.

The terminal 20 is produced by pressing the metal plate member in the thickness direction of the plate while maintaining the flat surface of the metal plate member. The signal terminal 20S and the ground terminal 20G are mixed in a plurality of terminals 20 arranged in each column. In the present embodiment, as shown in Fig. 1, the ground terminal 20G is provided one at each of two positions within the terminal arrangement range. That is, each of the ground terminals 20G is located between the two signal terminals 20S adjacent to each other in the terminal arrangement direction (see also FIG. 4).

As shown in FIG. 3(A), the signal terminal 20S has a base portion 21S, a contact arm portion 22S, a held arm portion 23S, and a signal connecting portion 24S which is attached to the lateral groove portion of the terminal housing portion 17. 17B extends in the width direction of the connector; the contact arm portion 22S extends upward from one end of the base portion 21S in the vertical groove portion 17A of the terminal accommodating portion 17; the held arm portion 23S is attached to the other end of the base portion 21 The position extends upward from the base portion 21 and is held in the terminal housing portion 17 The terminal holding hole portion 17C is provided; the signal connecting portion 24S extends downward from the other end of the base portion 21S.

The contact arm portion 22S is elastically deformable in the connector width direction, and a contact protrusion 22S-1 is formed at an upper end of the contact arm portion 22S, and the contact protrusion portion 22S-1 protrudes outward in the connector width direction. Located within the receiving portion 16. The held arm portion 23S is formed with a held projection 23S-1 that protrudes outward in the connector width direction at an intermediate position in the vertical direction. Further, the signal connecting portion 24S is located in the range of the connector width direction in the connector width direction, that is, on the inner side of the outer side surface of the side wall 14. The signal connecting portion 24S has its lower end exposed from the bottom wall 11 and soldered to the signal pad PS of the circuit board (not shown).

The signal terminal 20S having such a structure is attached to the socket-side housing 10 by pressing the held arm portion 23S of the terminal 20 from the lower side (the bottom wall 11 side) toward the terminal holding hole portion 17C formed in the side wall 14. Then, the held projection 23S-1 of the held arm portion 23S is bitten into the inner wall surface of the terminal holding hole portion 17C, whereby the signal terminal 20S is held in the terminal housing portion 17.

As shown in FIG. 3(B), the ground terminal 20G has the same shape as the signal terminal 20S. Therefore, for the ground terminal 20G, the "S" for the symbol terminal 20S is replaced with "G". The description is omitted. Further, the connection portion 24G of the ground terminal 20G is referred to as a "ground connection portion 24G" in order to clearly distinguish it from the signal connection portion 24S of the signal terminal 20S. In addition, the grounding pad to which the ground connection portion 24G is welded is referred to as a "grounding pad PG" (see FIG. 3(B)). Further, as shown in FIG. 3(B), the ground connection portion 24G is located in the range of the connector width direction in the connector width direction in the connector width portion 24S, that is, on the side wall portion 14. The outer side is more inside. The ground connection portion 24G has its lower end exposed from the bottom wall 11 and soldered to a ground pad PG of a circuit board (not shown).

As shown in FIG. 1 and FIG. 2, the shield member 30 is formed by pressing a metal plate member into a specific shape and then bending it in the thickness direction of the plate. As shown in Fig. 1, the shield member 30 has an upper plate portion 31, a held side plate portion 32, an end plate portion 33, and a side plate portion 34 that covers the two sides of the socket side casing 10. The upper side of the end wall 15; the supported side plate portion 32, the both end edges of the upper plate portion 31 in the connector width direction are vertically bent downward and extend in the terminal arrangement direction to cover the side wall outside the terminal arrangement range And the end plate portion 33 is bent toward the inner side in the connector width direction to cover the end wall surface of the both end walls 15 at the side end edge of the held side plate portion 32; the side plate The portion 34 extends continuously from the held side plate portion 32 and extends along the side wall 14 in the terminal arrangement direction and covers the outer side surface of the side wall 14 in the terminal arrangement range.

As shown in Fig. 2, the held side plate portion 32 has a contact piece 35, a held recessed portion 36, and a wide grounding leg portion 37 which is attached to the upper edge of the held side plate portion 32 and at the connector width. The inner side of the direction is bent downward and extends toward the inside of the receiving portion 16; the held concave portion 36 is opened downward at a position outside the contact piece 35 in the terminal arrangement direction; the wide grounding leg portion 37 is arranged at the terminal Direction and The contact piece 35 extends from the lower edge of the held side plate portion 32 at approximately the same position.

As shown in FIG. 3(C), the contact piece 35 is housed in the contact piece receiving groove 14A of the socket-side housing 10 in a base portion (a portion on the side connected to the upper edge of the held side plate portion 32). The lateral groove portion 14A-1 has a free end side (lower end side) portion which is located outside the vertical groove portion 14A-2 of the contact piece accommodation groove 14A and extends toward the inside of the receiving portion 16. The free end side portion is elastically deformable in the thickness direction of the board (connector width direction), and is held in contact with the grounding mold 60 of the plug connector 2 to be described later in the connector fitting state. Crimp and contact. Further, the elastic deformation of the free end side portion is permitted by the vertical groove portion 14A-2 of the contact piece accommodation groove 14A (see Fig. 5(C)).

The holding recessed portion 36 is a shield member holding portion 15A-1 that can receive the socket-side housing 10 from below, as shown in Fig. 1, and is held by the shield member from the upper side toward the shield member holding portion 15A-1. The groove 15A-2 presses the both edge portions which form the above-described held recessed portion 36 in the vertical direction, and holds the shield member 30 in the socket side casing 10. Further, the wide grounding leg portion 37 is bent perpendicularly at the lower edge of the held side plate portion 32 and extends outward in the connector width direction.

As shown in Fig. 1, the side plate portion 34 is at two positions in the terminal arrangement direction, specifically, at a position corresponding to the ground connection portion 24G of the ground terminal 20G, and has a wider grounding leg portion 37. A narrower narrow grounding leg 38. The narrow ground leg portion 38 is bent perpendicularly at the lower edge of the side plate portion 34 and extends outward in the connector width direction. As shown in FIGS. 3(B) and (C), the wide grounding leg portion 37 and the narrow grounding leg portion 38 are located at the connecting portion 24 of the terminal 20 in the width direction of the connector, that is, the signal connecting portion 24S and The ground connection portion 24G is further outside.

Fig. 4 is a side view of a portion of the receptacle connector 1 of Fig. 1 as viewed in the width direction of the connector. As shown in Fig. 4, the narrow grounding leg portions 38 are located in the region between the signal connecting portions 24S (indicated by "A" in Fig. 4), and the signal connecting portions 24S are located at the same The grounding leg portions 38 correspond to both sides of the grounding connection portion 24G. That is, the narrow grounding leg portions 38 do not have a range overlapping with the above-described signal connecting portions 24S located on both sides in the terminal arrangement direction (the horizontal direction in FIG. 4). Further, the narrow ground leg portion 38 has a range overlapping with the ground connection portion 24G in the terminal arrangement direction.

In the present embodiment, as shown in FIG. 4, the width W1 of the narrow grounding leg portion 38 of the shield member 30 in the terminal arrangement direction is the width in the same direction as the ground connection portion 24G (the thickness of the plate). W2 is smaller. Further, the narrow ground leg portion 38 is located within the width of the ground connection portion 24G and is located offset from the ground connection portion 24G toward the one side (the right side in FIG. 4) in the terminal arrangement direction. Therefore, even in the case where the socket connector 1 is viewed from the outside in the connector width direction (the direction perpendicular to the paper surface in FIG. 4), not only the narrow grounding leg portion 38 but also the grounding connection portion can be visually observed. 24G. As a result, before the socket connector 1 is mounted on the circuit board, it is easy to visually confirm whether both the narrow ground leg portion 38 and the ground connection portion 24G are disposed at the same height and flat. In addition, the socket connector 1 is mounted on the circuit After the substrate, it is easy to visually confirm whether or not both of the narrow ground leg portion 38 and the ground connection portion 24G are properly soldered to the ground pad PG of the circuit board.

As shown in Fig. 1, the wide grounding leg portion 37 and the narrow grounding leg portion 38 of the shield member 30 are soldered to the grounding pad PG of the circuit board. Further, in the present embodiment, as shown in FIG. 1 and FIG. 3(B), the narrow grounding leg portion 38 is connected to the grounding pad PG, and the grounding pad PG is connected to the narrow grounding leg portion. 38 corresponds to the ground connection portion 24G. In other words, as shown in FIG. 3(B), the ground pad PG is formed as a pad extending over the range including the ground connection portion 24G and the narrow ground leg portion 38 in the connector width direction. The ground pad for each of the ground connection portion 24G and the narrow ground leg portion 38 is shared.

As shown in FIG. 2, the shield member 30 is held by pressing the both edge portions of the held recessed portion of the held side plate portion 32 from the upper side of the socket-side housing 10 into the shield member holding groove 15A-2. In the state where the mounting of the shield member 30 is completed, the contact piece 35 of the shield member 30 is housed in the lateral groove portion 14A-1 of the contact piece accommodation groove 14A as shown in Figs. 1 and 3(C). And the free end side portion extends toward the inside of the receiving portion 16. Further, the narrow grounding leg portion 38 is located at approximately the same position as the ground connection portion 24G in the terminal arrangement direction, and is located outside the signal connection portion 24S or the ground connection portion 24G in the connector width direction.

Next, the structure of the plug connector 2 as the target connector will be described based on the first and fifth figures. The plug connector 2 has a plug side housing 40 forming a slightly rectangular parallelepiped shape, a plurality of object terminals 50, And a plurality of grounding molds 60, wherein the target terminal 50 is arranged in two rows at equal intervals by the plug-side housing 40 with the longitudinal direction of the plug-side housing 40 as a terminal arrangement direction; 60 is a pair of end portions (end wall 45 to be described later) of the plug-side housing 40 held in the longitudinal direction. As shown in FIGS. 1 and 5, the plug connector 2 is fitted and connected to the socket in a posture in which the receiving portion 46 (see FIGS. 5(A) and (B)) to be described later is opened downward. Device 1.

The plug-side housing 40 is made of an electrically insulating material such as resin, and extends in a longitudinal direction (terminal arrangement direction) in a direction parallel to the mounting surface of the circuit board. The plug-side housing 40 has a bottom wall 41 and a peripheral wall 43 which are parallel with respect to the mounting surface. The peripheral wall 43 is as shown in FIGS. 1 and 5 The wall 41 faces the frame-like fitting portion that is erected downward. The peripheral wall 43 has a pair of side walls 44 and a pair of end walls 45 extending along the terminal arrangement direction; the pair of end walls 45 are connected along a connector perpendicular to the terminal arrangement direction. The ends of the pair of side walls 44 are joined to each other in the width direction. A space that surrounds the peripheral wall 43 and opens downward is formed as a receiving portion 46 for receiving the protruding wall portion 12 of the receptacle connector 1.

As shown in Fig. 5(C), a ground mold accommodating portion 45A for press-fitting the holding mold 60 is formed on both ends of the end wall 45 in the width direction of the connector, and the ground mold accommodating portion 45A is formed. A slit shape that expands vertically with respect to the terminal arrangement direction. Two ground mold receiving portions 45A formed on one end wall are suspended with respect to each terminal arrangement direction The straight section is formed in a slightly U-shape, and is line-symmetrical with respect to the center position in the width direction of the connector.

As shown in Fig. 5(C), each of the ground mold housing portions 45A has an outer groove portion 45A-1, a holding hole portion 45A-2, and a connection groove portion 45A-3 which is attached to the connector. The outer position in the width direction extends in the up-and-down direction, and is open to the outside in the connector width direction. The holding hole portion 45A-2 is oriented further inward in the connector width direction than the outer groove portion 45A-1. The connecting groove portion 45A-3 extends in the connector width direction to connect the outer groove portion 45A-1 and the lower portion of the holding hole portion 45A-2 to each other, and is opened downward.

The target terminal 50 is produced by bending a strip-shaped sheet obtained by punching a metal plate in the thickness direction of the sheet. The target signal terminal 50S and the target ground terminal 50G are mixed in the plurality of target terminals 50 arranged in each column. In the present embodiment, the target ground terminal 50G is provided in correspondence with the ground terminal 20G of the receptacle connector 1 at two positions within the terminal arrangement range. That is, the object ground terminal 50G is located between the two object signal terminals 50S adjacent to each other in the terminal arrangement direction. As shown in FIGS. 1 and 5, the target terminals 50 are integrally formed and held by the side walls 44 of the plug-side housing 40, and are arranged at equal intervals in the longitudinal direction of the side walls 44.

As shown in FIG. 5(A), the target signal terminal 50S has a signal connecting portion 51S and a contact arm portion 52S, and the signal connecting portion 51S is at approximately the same height as the bottom wall 41 of the plug-side housing 40. Bit The side wall 44 is bent in a crank shape and extends outward in the width direction of the connector; the contact arm portion 52S is connected to the signal connecting portion 51S and is bent toward the lower side in FIG. 5(A). Buried in the side wall 44 described above.

The contact arm portion 52S extends downward along the inner side surface of the side wall 44, and is bent so that the lower end thereof is folded back outward in the connector width direction. The plate surface of the portion extending along the inner side surface of the side wall 44 is exposed toward the receiving portion 46 so as to form the same surface as the inner side surface of the side wall 44. The contact surface of the contact portion 52S is formed with a contact recess 52S-1 for receiving the contact protrusion 22S-1 of the terminal 20 of the receptacle connector 1 from the surface of the board. It is in contact with the contact protrusion 22S-1. Further, the signal connecting portion 51S extends outside the range of the plug-side housing 40 in the connector width direction, that is, toward the outer side surface of the side wall 44. Further, the signal connecting portion 51S is a signal pad (not shown) that is exposed from the bottom wall 41 and soldered to the circuit board.

As shown in FIG. 5(B), since the target ground terminal 50G has the same shape as the target signal terminal 50S, the "S" for the target signal terminal 50S is replaced with "" for the target ground terminal 50G. G" is omitted. Further, the connection portion 51G of the target ground terminal 50G is referred to as a "ground connection portion 51G" in order to clearly distinguish it from the signal connection portion 51S of the target signal terminal 50S.

The grounding mold 60 is produced by pressing the metal plate member while maintaining the flat surface of the metal plate member. As shown in Figure 5 (C) As shown, the grounding mold 60 has an outer leg portion 61, a held portion 62, a coupling portion 63, and a grounding leg portion 64 that is attached to the outer groove portion 45A-1 of the plug-side housing 40. The extending portion 62 extends in the vertical direction in the holding hole portion 45A-2. The connecting portion 63 extends in the connecting groove portion 45A-3 along the connector width direction to the outside. The leg portion 61 and the lower portion of the held portion 62 are coupled to each other, and the grounding leg portion 64 extends outward from the upper end of the outer leg portion 61 toward the outer side in the connector width direction outside the outer groove portion 45A-1. A contact protrusion 61A for elastically contacting the contact piece 35 of the shield member 30 of the receptacle connector 1 is formed on the outer leg portion 61, and the contact protrusion 61A is a side of the leg portion 61 from the outer side of the fifth figure (C). The lower portion of the rim protrudes outward in the width direction of the connector.

The grounding mold 60 is held in the ground mold accommodating portion 45A by being pressed into the held portion 62 from the lower side of the fifth drawing (C) toward the holding hole portion 45A-2 of the plug-side housing 40. As shown in Fig. 5(C), the contact protrusion 61A protrudes from the outer groove portion 45A-1. Further, the grounding leg portion 64 is exposed from the bottom wall 41 and is soldered to a ground pad (not shown) of the circuit board.

Next, the connector fitting operation as the receptacle connector 1 and the plug connector 2 will be described with reference to FIGS. 1 and 6 . First, the socket connector 1 is attached to the mounting surface of the circuit board corresponding to the socket connector 1 by soldering. Specifically, the signal connection portion 24S of the signal terminal 20S is soldered to the signal pad PS corresponding to the signal connection portion 24S. In addition, the ground connection portion 24G of the ground terminal 20G The narrow grounding leg portion 38 of the shield member 30 corresponding to the grounding connection portion 24G is welded to the same grounding pad PG. Next, the wide grounding leg portions 37 of the shield member 30 are respectively soldered to the grounding pads PG corresponding to the wide grounding leg portions 37.

Further, the plug connector 2 is attached to the mounting surface of the circuit board corresponding to the plug connector 2 by soldering. Specifically, the signal connection portion 51S of the target signal terminal 50S, the ground connection portion 51G of the target ground terminal 50G, and the grounding leg portion 64 of the ground mold 60 are respectively soldered to the corresponding signal pads or ground pads.

Next, as shown in FIG. 1, the receptacle connector 1 is assumed to have the receiving portion 16 open upward, and the receiving portion 46 of the plug connector 2 is provided above the receptacle connector 1 (refer to 5 (A), (B)) The posture of opening downward. Next, the plug connector 2 is lowered in a state where the posture of FIG. 1 is maintained, so that the protruding wall portion 12 of the receptacle connector 1 enters the receiving portion 46 of the plug connector 2 from below, and the peripheral wall of the plug connector 2 is made 43 enters the receiving portion 16 of the receptacle connector 1 from above. As a result, as shown in Fig. 5 (A) and (B), the contact protrusion 22S-1 of the signal terminal 20S of the receptacle connector 1 and the contact protrusion 22G-1 of the ground terminal 20G respectively protrude into the plug connection. The contact recess 52S-1 of the target signal terminal 50S of the device 2 and the contact recess 52G-1 of the target ground terminal 50G are in electrical contact with each other.

Further, as shown in FIG. 5(C), the contact piece 35 of the shield member 30 of the corresponding receptacle connector 1 is oriented toward the connector width direction by the contact protrusion 61A of the ground mold 60 of the plug connector 2 The outer side is pressed and elastically deformed to come into contact with the contact piece 35 with a contact pressure.

As a result, the terminals 20 and 50 are connected to each other, and the contact piece 35 of the shield member 30 and the contact protrusion 61A of the ground mold 60 are connected to each other to complete the connector fitting operation.

In the present embodiment, the narrow ground leg portion 38 of the shield member 30 is connected to the ground pad PG of the circuit board outside the connection portion 24 of the terminal 20 in the connector width direction. Therefore, since it is not necessary to position the grounding leg portions of the shield member between the terminals adjacent to each other in the terminal arrangement direction, the terminals can be closely spaced from each other. Therefore, the number of the signal terminals 20S can be increased without increasing the size of the socket connector 1 in the terminal arrangement direction. Further, in the case where the number of the signal terminals 20S is not required to be increased, the socket connector 1 can be miniaturized in the terminal arrangement direction by making the terminals close to each other. The connector can be miniaturized in the direction in which the terminals are arranged.

Further, in the present embodiment, the narrow grounding leg portion 38 of the shield member 30 does not excessively approach the connecting portion 24 of the terminal 20 in the terminal arrangement direction. In other words, it is not necessary to provide both of the connection portions of the two terminals that are excessively close to the grounding leg portion on both sides of the grounding leg portion of the shield member as the ground connection portion. Therefore, according to the present embodiment, it is possible to reduce one ground terminal corresponding to one grounding leg portion, whereby the socket connector 1 can be miniaturized in the terminal arrangement direction. Further, in the present embodiment, the narrow ground leg portion 38 of the shield member 30 has a range overlapping with the ground terminal 20G in the terminal arrangement direction, and thus The connector should be further miniaturized in the terminal arrangement direction in the portion of the repetition range.

Further, in the receptacle electrical connector 1 of the present embodiment, the narrow grounding leg portion 38 of the shield member 30 is located outside the ground connecting portion 24G corresponding to the narrow grounding leg portion 38 in the connector width direction (refer to 3 (B)), in the terminal arrangement direction, in the region between the signal connection portions 24S, and having no repetition range with respect to the signal connection portion 24S in the terminal arrangement direction, the signal connection portion 24S is adjacent Located on both sides of the ground connection portion 24G (see FIG. 4). Therefore, even if the narrow ground leg portion 38 is disposed close to the ground connection portion 24G of the ground terminal 20G in the connector width direction, the signal connection portions 24S on the both sides are not excessively approached. Therefore, in the circuit board, the ground pad PG corresponding to the ground connection portion 24G and the narrow ground leg portion 38 is between the signal pads PS corresponding to the signal connection portions 24S on both sides, and can be at the terminal. Ensure a sufficient distance in the alignment direction. As a result, when the connector is assembled, there is no fear that the ground pad PG corresponding to both the ground connection portion 24G and the narrow ground leg portion 38 and the two signal pads are soldered. Therefore, the connection portion 24 of each terminal 20 and the narrow grounding leg portion 38 of the shield member 30 can be surely connected to the corresponding pads.

Further, in the present embodiment, since the grounding leg portion 24G is located in the range of the connector width direction from the socket side housing 10, that is, on the inner side of the outer side surface of the side wall 14, the shielding member 30 can be The narrow grounding leg portion 38 is provided close to the connecting portion 24 of the terminal 20 in the connector width direction. Thus, corresponding to the narrow grounding leg 38 is connected The width direction of the device is located outside the connection portion 24 of the terminal 20, and the enlarged portion can be minimized even if the size of the socket connector 1 is slightly larger in the connector width direction than in the related art.

In the present embodiment, the ground connection portion 24G of the ground terminal 20G and the narrow ground leg portion 38 of the shield member 30 are connected to one ground pad PG. Alternatively, the ground connection portion 24G and the narrow ground leg portion 38 may be used instead. Each is connected to a different grounding pad. In this case, in the circuit board, the ground pad to which the ground connection portion 24G is connected and the ground pad connected to the narrow ground leg portion 38 are close to each other in the connector width direction. However, in the case of connector assembly, even in the case where the respective ground pads corresponding to the ground connection portion 24G or the narrow ground leg portion 38 are soldered to each other, since these are also grounded in the same manner, there is no problem.

Further, in the present embodiment, the ground connection portion 24G and the narrow grounding leg portion 38 are located on one side of the terminal arrangement direction, but instead, for example, the ground connection portion 24G and the narrow grounding portion 38 may be arranged in the terminal. The centers of the directions are set in a manner consistent with each other. Even if the centers are aligned in this way, both the ground connection portion 24G and the narrow ground leg portion 38 can be visually observed from the outside in the connector direction. Therefore, before the socket connector 1 is mounted on the circuit board, it is easy to visually confirm whether both the narrow ground leg portion 38 and the ground connection portion 24G are flat at the same height, and can be easily visually observed after the assembly. It is confirmed whether or not both of the narrow ground leg portion 38 and the ground connection portion 24G are properly soldered to the ground pad PG of the circuit board.

Further, in the present embodiment, the narrow grounding leg portion 38 is all The body is located within the width of the ground connection portion 24G in the terminal arrangement direction, but instead, only a part of the narrow ground leg portion 38 may be located within the width of the ground connection portion 24G in the terminal arrangement direction. The narrow ground leg portion 38 and the ground connection portion 24G are offset from each other in such a manner as to have a portion overlapping. Even in such a positional relationship, both the ground connection portion 24G and the narrow ground leg portion 38 can be visually observed from the outside in the connector direction. Therefore, before the socket connector 1 is mounted on the circuit board, it is easy to visually confirm whether both the narrow ground leg portion 38 and the ground connection portion 24G are flat at the same height, and can be easily visually observed after the assembly. It is confirmed whether or not both of the narrow ground leg portion 38 and the ground connection portion 24G are properly soldered to the ground pad PG of the circuit board.

Further, in the present embodiment, the ground connection portion 24G and the narrow ground leg portion 38 are provided so as to have a partially overlapping range. For example, the ground connection portion and the grounding leg portion may be formed in the same terminal arrangement direction. The size is such that the centers in the direction in which the terminals are arranged coincide with each other, that is, the entire range is repeated in the direction in which the terminals are arranged. Further, the grounding leg portion may be formed to have a larger size than the grounding connection portion in the terminal arrangement direction, and may be provided at a position where the grounding leg portion includes the entire grounding connection portion in the terminal arrangement direction.

In the case where the ground connection portion and the grounding leg portion are provided in the size or positional relationship as described above, in the connector width direction, that is, in the direction perpendicular to the plate surface of the side plate portion of the shield member, When the grounding leg is viewed from the outside, even if the grounding leg is not recognized, it is only required to have an angle with respect to the connector width direction. It is convenient to identify the ground connection and the grounding foot without any problems. That is, as long as the socket connector 1 is mounted on the circuit board in the direction having the angle with respect to the width direction of the connector, it can be visually confirmed whether both the narrow grounding leg portion 38 and the grounding connecting portion 24G are at the same height. Further, after the mounting, it is possible to visually confirm whether or not both of the narrow grounding leg portion 38 and the grounding connecting portion 24G are properly soldered to the grounding pad PG of the circuit board.

In the present embodiment, the two ground terminals 20G are provided in the terminals arranged in the respective rows. However, the number of the ground terminals 20G is not limited thereto, and may be one or three or more. In order to enhance the grounding function, it is preferable to provide the ground terminal 20G. Further, in the two terminal rows held in the socket side casing 10, the position or number of the signal terminals 20S and the ground terminals 20G may be different in one terminal row and the other terminal row. In addition, in order to use the socket connector 1 for high-speed signal transmission, it is preferable to use a common arrangement in which the ground terminal 20G is located on both sides of the two adjacent signal terminals 20S adjacent to each other in the terminal column. The arrangement of the ground terminal 20G, the signal terminal 20S, and the signal terminal 20S is repeated for general arrangement.

The shape and positional relationship between the connecting portion 24 of the terminal 20 of the present invention and the narrow grounding leg portion 38 of the shield member 30 are not limited to the embodiments described in FIGS. 1 to 5, and may be, for example, FIG. 6 ( Various modifications are performed as shown in A) and (B). Fig. 6(A) shows a modification of the embodiment, and Fig. 6(B) further shows a cross-sectional view of a different modification, showing the ground end in the terminal arrangement direction of the connector. A cross section of the position of the sub-position in a direction perpendicular to the direction in which the terminals are arranged. In each of the modifications of the sixth embodiment (A) and (B), "" or "" is added to the symbols of the respective portions with respect to the portions corresponding to the embodiments shown in Figs. 1 to 5 . It is illustrated.

In the present embodiment described in the first to fifth figures, as shown in FIG. 3(B), the ground connection portion 24G of the ground terminal 20G is located in the socket-side housing 10 in the connector width direction. In the range, the lower end of the narrow grounding leg portion 38 of the shield member 30 is bent outward in the connector width direction at the same position as the bottom surface of the socket-side housing 10. On the other hand, in the modification shown in FIG. 6(A), the difference from the above embodiment is that the ground connection portion 24G' of the terminal 20' is oriented toward the socket-side housing 10 in the connector width direction. The outer side extends further, and the lower portion of the grounding leg portion 38' of the shield member 30' is curved in such a manner as to avoid interference with the above-described ground connection portion 24G'. Specifically, the lower portion of the grounding leg portion 38' is bent toward the outside in the connector width direction and then bent downward.

In the modification of Fig. 6(A), as compared with the embodiment shown in Fig. 3(B), since the ground connection portion 24G' is formed larger in the connector width direction, Therefore, it is ensured that the contact area of the ground connection portion 24G' and the ground pad PG is large, and welding can be performed more surely.

In the modification of Fig. 6(B), the portion which is not bent at the lower portion of the grounding leg portion 38" of the shield member 30" is different from the embodiment described in Figs. 1 to 5 (refer to 3 (B)). In the modification of FIG. 6(B), the lower portion of the grounding leg portion 38" The connector does not extend toward the outside in the width direction of the connector, so that the grounding leg portion 38" has a smaller dimension in the connector width direction than the present embodiment. Therefore, in the circuit board, the grounding terminal of the ground terminal 20G" The grounding pad connected to the grounding leg portion 38" of the 24G" and the shield member 30" can also be reduced in size in the width direction of the connector. As a result, it can be used for other electronic devices on the mounting surface of the circuit board. The space for the construction is increased, and therefore, the degree of freedom in designing the circuit is increased.

1‧‧‧Socket connector

20G‧‧‧ grounding terminal

20S‧‧‧ signal terminal

24G‧‧‧Ground connection

24S‧‧‧ Signal Connection

30‧‧‧Shielding members

34‧‧‧ Side panel

38‧‧‧Narrow grounding foot (grounding foot)

Claims (4)

An electrical connector for a circuit board, wherein the electrical connector for a circuit board includes a housing, a plurality of terminals, and a shielding member, wherein the housing is formed on a mounting surface of the circuit board One of the parallel directions extends as a longitudinal direction; the plurality of terminals are arranged and held in the housing in a direction in which the longitudinal direction is a terminal arrangement direction; the shield member is attached to the housing, and the housing has a bottom wall And a side wall that extends along the terminal arrangement direction with respect to a mounting surface of the circuit board; the side wall is erected from both sides of the bottom wall in a connector width direction perpendicular to the terminal arrangement direction And extending along the terminal arrangement direction, wherein the plurality of terminals are mixed with a signal terminal and a ground terminal and are arranged and held on the side wall, wherein the signal terminal has a signal connection portion, and the signal connection portion is a signal connected to the circuit substrate. Exposed from the bottom wall by a pad, the ground terminal has a ground connection portion for connecting to the electricity The grounding pad of the substrate is exposed from the bottom wall, and the shielding member has a side plate portion and a grounding leg portion. The side plate portion is located outside the terminal in the width direction of the connector, and extends along the outer side surface of the side wall. Extending the terminal arrangement range; the grounding leg portion extends from the side plate portion toward the circuit substrate in a position corresponding to the ground connection portion of the ground terminal in the terminal arrangement direction, wherein the circuit board is electrically connected to the circuit board, wherein The ground connection portion of the grounding terminal is located between the signal connection portions of the two signal terminals adjacent to each other in the terminal arrangement direction, and the grounding leg portion of the shielding member is configured to be connected to the signal in the connector width direction. a portion on the outer side of the ground connection portion is connected to the ground pad for the circuit board, and has a terminal at a position between the signal connection portions on both sides of the ground connection portion corresponding to the ground leg portion. The range in which the grounding connection portion overlaps with the above-described ground connection portion. The electrical connector for a circuit board according to the first aspect of the invention, wherein the ground connection portion of the ground terminal and the grounding leg portion of the shield member are offset from each other in such a manner that a part of the terminal arrangement direction overlaps. Ground setting. The electrical connector for a circuit board according to the first or second aspect of the invention, wherein the ground connection portion of the ground terminal and the grounding leg portion of the shield member are connected to each other for use as a ground pad for each of them. A mat. An electrical connection structure according to any one of claims 1 to 3, wherein the electrical connector for a circuit board according to any one of claims 1 to 3 is attached to a circuit board.