CN104241972A - Electrical connector for circuit board and electrical connector installation body - Google Patents

Abstract

The present invention provides an electrical connector for a circuit board and an electrical connector assembly capable of reliably connecting the connecting portion of each terminal and the grounding leg portion of a cover member to corresponding pads without increasing the size in the terminal array direction. The ground connection portion (24G) of the ground terminal (20G) is located between the signal connection portions (24S) of two adjacent signal terminals (20S) in the terminal arrangement direction, and the ground leg portion (38) of the shield member (30) ) is connected to the ground pad of the circuit board at a position outside the signal connection portion (24S) and the ground connection portion (24G) in the width direction of the connector, and is located at a position corresponding to the ground pin portion (38). In the area between the signal connection parts (24S) on both sides of the ground connection part (24G), there is a range overlapping with the ground connection part (24G) in the terminal arrangement direction.

Description

Electrical connector for circuit board and electrical connector mounting body

technical field

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

Background technique

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 arranged on a circuit board and is fitted and connected to a mating connector from above. This electrical connector for a circuit board has: a thin, substantially rectangular parallelepiped housing extending in a direction parallel to the circuit board as a longitudinal direction; a plurality of terminals; and two shells (shield parts) mounted on the housing.

The housing has two side walls extending along the terminal arrangement direction and opposing in the connector width direction (a direction at right angles to the terminal arrangement direction), and the side walls are arranged at equal intervals in the terminal arrangement direction. Keep the above multiple terminals. The terminals are all formed in the same shape, and the connecting portion for connecting to a pad formed on the circuit board extends outward in the width direction of the connector at the same height position as the bottom surface of the housing.

Of the plurality of terminals held in a row by each side wall, two terminals positioned adjacent to each other in a central area in the direction of the terminal arrangement are used as ground terminals, and the other terminals are used as signal terminals. The connection portion of the signal terminal serves as a signal connection portion, and the connection portion of the ground terminal serves as a ground connection portion, and is soldered to a corresponding pad, that is, a signal pad or a ground pad, respectively.

The housing has: a side plate portion extending in the direction of the terminal arrangement so as to cover the outer surface of the side wall within the range of the terminal arrangement; The grounding leg is bent outward in the width direction of the connector at the same height position as the connection portion of the terminal. The grounding foot is arranged to be located on both sides of the terminal arrangement range and the above-mentioned central area within the terminal arrangement range in the direction of the terminal arrangement, and to be located at the same position as the connecting portion of the terminal in the width direction of the connector, that is, It constitutes the same row as the connecting portion. The ground leg portion disposed in the central region is located between two adjacent ground connection portions disposed in the central region, and is close to the ground connection portion. Thus, when the electrical connector for a circuit board is mounted on the circuit board, the ground leg portion and the two ground connection portions located on both sides thereof and a common ground pad that covers the leg portion and the connection portion together connect.

Patent Document 1: JP Kokai 2008-218095

The electrical connector for a circuit board in Patent Document 1 requires two ground terminals in the central area of the terminal arrangement range, so compared with the case where only one ground terminal is provided in the central area, the number of ground terminals is one more, correspondingly Therefore, it is necessary to add signal terminals at other positions in the terminal arrangement direction, thereby resulting in a larger connector in the terminal arrangement direction.

If the number of terminals of the electrical connector for a circuit board in Patent Document 1 is reduced by one, and only one ground terminal is provided in the central region, the size of the connector in the terminal arrangement direction can be reduced. However, in this case, the ground leg of the housing is located between the ground terminal and the signal terminal adjacent to the ground terminal in the above-mentioned central region, so that the ground leg is too close to the signal connection portion of the signal terminal. Therefore, on the circuit board, correspondingly, the ground pads for connecting the above-mentioned ground pins and the signal pads for connecting the above-mentioned signal connection parts are formed at positions that are too close to each other. Therefore, when mounting the connector, The soldering of the respective pads joins each other, causing the two pads to be electrically shorted to each other.

Contents of the invention

The present invention was made in view of the above-mentioned circumstances, and its object is to provide a circuit that can reliably connect the connecting portion of each terminal and the ground leg portion of the cover member to the corresponding pad without increasing the size in the direction of the terminal arrangement. An electrical connector for a substrate and an electrical connector mounting body.

＜The first invention＞

The electrical connector for a circuit board according to the first aspect of the present invention is disposed on a circuit board, and includes: a case extending in a direction parallel to a mounting surface of the circuit board as a longitudinal direction; a plurality of terminals arranged and held in the housing in the terminal arrangement direction; and a shield member installed in the housing, the housing having: a bottom wall facing the mounting surface of the circuit board and extending along the terminal arrangement direction; and side walls standing up from both sides of the bottom wall in the connector width direction at right angles to the terminal arrangement direction and extending along the terminal arrangement direction, the plurality of terminals are signal terminals and ground terminals mixed and arranged Retained on the above-mentioned side wall, the above-mentioned signal terminal has a signal connection portion exposed from the bottom wall so as to be connected to the signal pad of the circuit board, and the above-mentioned ground terminal has a portion exposed from the bottom wall so as to be connected to the ground pad of the circuit board. In the ground connection part, the above-mentioned shield member has: a side plate part extending along the outer surface of the above-mentioned side wall in the terminal arrangement range at a position outside the above-mentioned terminal in the width direction of the above-mentioned connector; The ground connection portion of the ground terminal corresponds to a ground leg portion extending from the side plate portion to the circuit board.

In the electrical connector for a circuit board described above, in the present invention, the ground connection portion of the ground terminal is located between the signal connection portions of two adjacent signal terminals in the terminal array direction, and the shield member The ground leg portion is connected to the ground pad of the circuit board at a position outside the signal connection portion and the ground connection portion in the width direction of the connector, and is located on both sides of the ground connection portion corresponding to the ground leg portion. In the region between the signal connection parts, there is a range overlapping with the ground connection part in the terminal arrangement direction.

In the electrical connector for a circuit board of Patent Document 1 described above, there are a plurality of terminals arranged, so in order to avoid the tendency to become larger in the terminal arrangement direction, the high-density arrangement of the terminals in this direction And the requirement to achieve miniaturization is very large. In the present invention, the ground leg portion of the shield member is connected to the ground pad of the circuit board at a position outside the signal connection portion and the ground connection portion in the width direction of the connector. As a result, there is no need to position the ground leg portion of the shield member between adjacent terminals in the terminal array direction, and accordingly, the distance between the terminals can be made close. Therefore, the number of signal terminals can be increased without increasing the size of the connector in the terminal arrangement direction. In addition, without increasing the number of signal terminals, it is possible to reduce the size of the connector in the direction in which the terminals are arranged so that the distance between the terminals becomes closer.

In addition, in the present invention, the ground leg portion of the shield member does not come too close to the connection portion of the terminal in the terminal array direction. In other words, it is not necessary to make both the connecting portions of the two terminals that are too close to the grounding leg portion on both sides of the grounding leg portion of the shield member to be ground connection portions as in the past. Therefore, one ground terminal can be reduced, and the connector can also be downsized in the terminal array direction in this point. Furthermore, in the present invention, since the ground leg portion of the shield member has a range overlapping the ground terminal in the terminal array direction, the connector can be further miniaturized in the terminal array direction corresponding to the overlapping range.

In addition, in the electrical connector for a circuit board according to the present invention, the ground leg portion of the shield member is located outside the ground connection portion corresponding to the ground leg portion in the width direction of the connector, and in the terminal arrangement direction, It is located in a region between the signal connection portions adjacent to both sides of the ground connection portion. Therefore, even if the ground leg portion is disposed close to the ground connection portion of the ground terminal in the width direction of the connector, it does not come too close to the signal connection portions on both sides. Therefore, on the circuit board, even if the ground pad corresponding to the ground leg portion is close to the ground pad corresponding to the ground connection portion in the width direction of the connector, the signal connection portions on both sides can be connected to each other. A sufficient distance is secured between the corresponding signal pads in the terminal arrangement direction. As a result, there is no possibility that the ground pad corresponding to the ground leg portion and the two signal pads are erroneously connected by soldering when the connector is mounted. In addition, even when the above-mentioned ground pads that are close to each other, that is, the ground pad corresponding to the above-mentioned ground leg and the ground pad corresponding to the above-mentioned ground connection part are connected by soldering, as long as they are Pads that are also grounded at the same ground will not cause any problems. Therefore, the connecting portion of each terminal and the ground leg portion of the cover member can be reliably connected to the corresponding pads.

In addition, in the present invention, the ground leg portion can be provided close to the connection portion of the terminal in the connector width direction. Therefore, even if the size of the connector is slightly larger in the connector width direction than conventional ones corresponding to the fact that the connection portion of the terminal is located outside the ground leg portion in the connector width direction, the increased amount can be suppressed to a minimum.

In the present invention, the ground connection portion of the ground terminal and the ground leg portion of the shield member may be offset from each other so as to partially overlap in the terminal array direction. By offsetting the ground connection portion and the ground leg portion in this way, not only the ground leg portion but also the ground connection portion can be visually observed even when the circuit board electrical connector is viewed from the outside in the connector width direction. Therefore, before mounting the receptacle connector 1 on the circuit board, it is possible to easily confirm visually whether the ground leg portion and the ground connection portion are both flat and at the same height, and after mounting the connector on the circuit board, it is possible to It is easy to visually confirm whether both the ground leg portion and the ground connection portion are securely and properly soldered to the ground pad of the circuit board.

The ground connection portion of the ground terminal and the ground leg portion of the shield member may be connected to one common pad as the respective ground pads.

＜Second Invention＞

The electrical connector assembly according to a second aspect of the present invention is characterized in that the above-mentioned electrical connector for a circuit board is mounted on a circuit board.

As described above, in the present invention, the ground leg portion of the cover member is located outside the connecting portion of the terminal in the width direction of the connector, so it is not necessary to place the ground leg portion between adjacent terminals in the terminal array direction. , and accordingly, the intervals between the terminals can be made close. Therefore, the number of signal terminals can be increased without increasing the size of the connector in the terminal array direction. In addition, without increasing the number of signal terminals, it is possible to reduce the size of the connector in the direction in which the terminals are arranged so that the distance between the terminals becomes closer. In addition, since the ground leg portions overlap the ground connection portions of the ground terminals in the direction of the terminal arrangement, it is also possible to reduce the size of the connector in the direction of the terminal arrangement.

In addition, since the ground leg of the shield member is located in the region between the signal connection parts on both sides of the ground connection part corresponding to the ground leg, even if the ground leg is brought close to the terminal in the width direction of the connector, The connecting portion of the grounding leg and the signal connecting portion of the signal terminal can also ensure a sufficient distance in the direction of the terminal arrangement, so that the connecting portion of each terminal and the grounding leg of the shield member can be connected to the corresponding soldering portion. Disks are securely connected. In addition, by bringing the ground leg portion close to the connection portion of the terminal in the connector width direction, it is possible to minimize the increase in size of the connector in the connector width direction.

Description of drawings

1 is a perspective view showing a receptacle connector according to an embodiment of the present invention together with a plug connector as a mating connector, showing a state before the connectors are fitted.

Fig. 2 is a perspective view showing a state before a cover member of the receptacle connector of Fig. 1 is attached.

3(A) to 3(C) are sectional views of the receptacle connector in FIG. 1 on a surface at right angles to the terminal arrangement direction, and FIG. 3(A) shows a section where the signal terminals are located. FIG. 3( B) shows a section where the ground terminal is located, and FIG. 3(C) shows a section where the contact piece of the shield member is located.

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

5(A) to 5(C) are cross-sectional views of the receptacle connector and the plug-in connector in the mating state of the connector on a surface at right angles to the terminal arrangement direction, and FIG. 5(A) shows the signal 5(B) shows the cross section at the position of the ground terminal, and FIG. 5(C) shows the cross section at the position of the contact piece of the shield part.

6(A) is a cross-sectional view showing a modified example of this embodiment, and FIG. 6(B) is a cross-sectional view showing other different modified examples. A section in a direction perpendicular to the alignment direction is shown.

Explanation of reference signs

1...Socket connector; 10...Socket side shell; 11...Bottom wall; 14...Side wall; 20...Terminal; 20S...Signal terminal; 20G...Ground terminal; 24S...Signal connection part; 24G...Ground connection part; 30...shield part; 32...side plate part; 38...narrow ground leg part (ground leg part); PS...signal pad; PG...ground pad.

Detailed ways

Embodiments of the present invention will be described below based on the drawings.

1 is a perspective view showing a receptacle connector 1 according to an embodiment of the present invention together with a plug connector 2 as a mating connector, showing a state before the connectors are fitted. FIG. 2 is a perspective view showing a state before installation of the cover member 30 of the receptacle connector 1 of FIG. 1 . Fig. 3 is a sectional view of the receptacle connector 1 of Fig. 1 on a plane perpendicular to the terminal arrangement direction, Fig. 3(A) shows a section at the position of the signal terminal 20S, and Fig. 3(B) shows a ground terminal 20G 3 (C) is a cross section at the position of the contact piece 35 of the shield member 30.

The receptacle connector 1 of the present embodiment and the plug connector 2 as the mating connector of the receptacle connector 1 are electrical circuits for circuit boards respectively arranged on the mounting surfaces of different circuit boards (not shown). The connector constitutes a connector assembly in which a direction (a vertical direction in FIG. 1 ) at right angles to the mounting surface of each circuit board is used as a plugging and unplugging direction.

As can be seen in FIG. 1 , the receptacle connector 1 has: a receptacle-side housing 10 in a substantially rectangular parallelepiped shape; A plurality of terminals 20 held in a row at equal intervals in two rows; and a shield member 30 attached to the socket-side housing 10 so as to cover the peripheral wall 13 of the socket-side housing 10 . The receptacle connector 1 is arranged and mounted on a circuit board in the posture shown in FIG. 1 .

The receptacle-side housing 10 is made of, for example, 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 parallel to the mounting surface (see FIG. 3(C)); a protruding wall portion 12 standing upward from the bottom wall 11 in FIG. 1 and extending in the terminal arrangement direction; and A frame-shaped peripheral wall 13 stands upward from the bottom wall 11 and surrounds the protruding wall portion 12 . The peripheral wall 13 has: a pair of side walls 14 extending in the direction in which the terminals are arranged; and a pair of ends extending in the width direction of the connector at right angles to the direction in which the terminals are arranged and connecting the ends of the pair of side walls 14 to each other. wall 15. An annular space opened 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 above-mentioned receptacle-side housing 10, the terminal accommodating portion 17 for holding the terminal 20 is formed in two rows symmetrically in the connector width direction with respect to the longitudinal center line of the protruding wall portion 12, in the terminal arrangement direction. Formed in an evenly spaced arrangement. In Fig. 3 (A), (B), it can be seen that each terminal accommodating portion 17 has: a vertical groove portion 17A that is recessed from the side of the protruding wall portion 12 and extends in the vertical direction; penetrates the bottom wall 11 in the vertical direction and The horizontal groove portion 17B extending in the width direction of the connector; and the terminal holding hole portion 17C penetrating the side wall 14 in the vertical direction.

As can be seen in FIG. 1 , the outer surface of the end wall 15 on the extension line of the outer surface of the side wall 14 of the socket-side housing 10 is formed so as to protrude from the lower portion of the outer surface in the width direction of the connector. There is a cover member holding portion 15A- 1 for holding a cover member 30 to be described later. On both sides of the cover member holding portion 15A- 1 (surfaces at right angles to the terminal array direction), cover member holding grooves 15A- 2 recessed from the side surfaces and extending in the vertical direction are respectively formed.

In addition, on the inner surface of the side wall 14, at a position outside the terminal arrangement range in the terminal arrangement direction, a contact piece 35 for accommodating a cover member 30 described later is formed on the upper surface and the inner surface of the side wall 14. Sheet storage groove 14A (see also FIG. 3(C)). As can be clearly seen in FIG. 3(C), the contact piece receiving groove 14A has a horizontal groove portion 14A-1 recessed from the upper surface of the side wall 14 and a vertical groove portion 14A-2 recessed from the inner surface of the side wall 14. .

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

As can be seen in FIG. 3(A), the signal terminal 20S has: a base portion 21S extending along the width direction of the connector in the transverse groove portion 17B of the terminal accommodating portion 17; 21S, a contact arm portion 22S extending upward from one end of the base portion 21; a held arm portion 23S extending upward from the base portion 21 and held in the terminal holding hole portion 17C of the terminal accommodating portion 17 at a position near the other end of the base portion 21; The other end of the base portion 21S is a signal connection portion 24S extending downward.

The contact arm portion 22S is elastically deformable in the connector width direction, and a contact protrusion 22S- 1 protruding outward in the connector width direction and located in the receiving portion 16 is formed at an upper end of the contact arm portion 22S. A held protrusion 23S- 1 protruding outward in the connector width direction is formed at an intermediate position in the vertical direction of the held arm portion 23S. In addition, the signal connection portion 24S is located within the range of the receptacle-side housing 10 in the connector width direction, that is, located inside the outer surface of the side wall 14 . The signal connection portion 24S has its lower end exposed from the bottom wall 11 and is connected by soldering to a signal pad PS of a circuit board (not shown).

The signal terminal 20S configured in this way is attached to the receptacle-side housing 10 by pressing the held arm portion 23S of the terminal 20 into the terminal holding hole 17C formed in the side wall 14 from below (bottom wall 11 side). Then, the signal terminal 20S is held in the terminal accommodating portion 17 by the held protrusion 23S- 1 of the held arm portion 23S biting into the inner wall surface of the terminal holding hole 17C.

As can be seen in FIG. 3(B) , the ground terminal 20G has exactly the same shape as the signal terminal 20S, so the description of the ground terminal 20G is omitted by replacing the symbol "S" of the signal terminal 20S with "G". In addition, the connection portion 24G of the ground terminal 20G is referred to as “ground connection portion 24G” in order to clearly distinguish it from the signal connection portion 24S of the signal terminal 20S. In addition, the ground pads to which the ground connection portion 24G is soldered are referred to as "ground pads PG" (see FIG. 3(B) ). In addition, it can be seen in FIG. 3(B) that the ground connection portion 24G is also the same as the signal connection portion 24S, and is located within the range of the receptacle-side housing 10 in the width direction of the connector, that is, compared to the outside of the side wall 14. The sides are on the inside. The ground connection portion 24G has its lower end exposed from the bottom wall 11 and is soldered to a ground pad PG of a circuit board (not shown).

As can be seen from FIGS. 1 and 2 , the shield member 30 is manufactured by punching out a metal plate member into a predetermined shape, and then bending it in the plate thickness direction. As shown in FIG. 1, the shield member 30 has: an upper plate portion 31 covering the upper surfaces of both end walls 15 of the receptacle-side housing 10; Both ends of the plate portion 31 are bent downward at right angles, extend along the terminal arrangement direction and cover the side wall 14 outside the terminal arrangement range, and are held in the socket side housing 10; The side end edges of the holding side plate portion 32 are bent inwardly in the width direction of the connector and cover the end wall surfaces of the two end walls 15; The terminal arrangement direction extends and covers the outer surface of the side wall 14 within the terminal arrangement range.

As can be clearly seen in FIG. 2 , the held side plate portion 32 has a contact piece 35 that is bent downward on the inside of the connector width direction at the upper edge of the held side plate portion 32 and toward the inside of the receiving portion 16 . extended; a held recess 36, which opens downward at a position outside the above-mentioned contact piece 35 in the direction of terminal arrangement; The position extends from the lower edge of the held side plate portion 32 .

As can be seen in FIG. 3(C), the contact piece 35 accommodates its base (the part on the side connected to the upper edge of the held side plate portion 32) in the contact piece accommodating groove 14A of the socket-side housing 10. In the horizontal groove portion 14A- 1 , the free end side (lower end side) portion is located outside the vertical groove portion 14A- 2 of the contact piece receiving groove 14A and protrudes into the receiving portion 16 . The free end side portion is elastically deformable in its plate thickness direction (connector width direction), and has contact with a contact protrusion 61A of a ground metal fitting 60 of the plug connector 2 described later in the connector mated state. Contact with pressure. In addition, the above-mentioned elastic deformation of the free end side portion is allowed by the vertical groove portion 14A- 2 of the contact piece accommodation groove 14A (see FIG. 5(C) ).

As can be seen in FIG. 1 , the held recess 36 can accommodate the shield member holding portion 15A-1 of the socket-side housing 10 from below, forming both edge portions of the above-mentioned held recess 36 extending in the up-down direction. The shield member 30 is held by the socket-side housing 10 by pressing into the shield member holding groove 15A- 2 of the shield member holding portion 15A- 1 . In addition, the wide ground leg portion 37 is bent at right angles at the lower edge of the held side plate portion 32 and extends outward in the connector width direction.

As shown in FIG. 1 , two positions of the side plate portion 34 in the direction of terminal arrangement, specifically, positions corresponding to the ground connection portion 24G of the ground terminal 20G, have a narrower width than the above-mentioned wide ground leg portion 37 . A grounding leg 38 is provided. The narrow ground leg portion 38 is bent at right angles at the lower edge of the side plate portion 34 and extends outward in the width direction of the connector. It can be clearly seen in Fig. 3(B) and (C) that the wide-width grounding leg portion 37 and the narrow-width grounding leg portion 38 are compared with the connecting portion 24 of the terminal 20, that is, the signal connecting portion 24S in the width direction of the connector. And the ground connection part 24G is located outside.

FIG. 4 is a side view of a part of the receptacle connector 1 of FIG. 1 viewed in the connector width direction. It can be seen in FIG. 4 that the narrow-width grounding leg portion 38 is located in the area between the signal connecting portions 24S located on both sides of the ground connection portion 24G corresponding to the narrow-width grounding leg portion 38 ( FIG. 4 "A" in the illustration). That is, the narrow ground leg portion 38 does not overlap with the signal connection portion 24S located on both sides in the terminal arrangement direction (left-right direction in FIG. 4 ). In addition, the narrow ground leg portion 38 has a range overlapping the ground connection portion 24G in the terminal array direction.

In this embodiment, as can be seen in FIG. 4 , the width dimension W1 in the terminal arrangement direction of the narrow ground leg portion 38 of the shield member 30 is smaller than the width dimension (plate thickness) in the same direction of the ground connection portion 24G. Size) W2. In addition, the narrow ground leg portion 38 is offset to one side (right side in FIG. 4 ) in the terminal arrangement direction with respect to the ground connection portion 24G within the range of the width dimension of the ground connection portion 24G. Therefore, when the receptacle connector 1 is viewed from the outside in the connector width direction (direction at right angles to the paper surface in FIG. 4 ), not only the narrow ground leg portion 38 but also the ground connection portion can be seen. 24G. As a result, before the receptacle connector 1 is mounted on the circuit board, it can be easily confirmed visually whether the narrow ground leg portion 38 and the ground connection portion 24G are located flat and at the same height. In addition, after the receptacle connector 1 is mounted on the circuit board, it can be easily confirmed visually whether both 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 can be seen in FIG. 1 , the wide-width ground leg portion 37 and the narrow-width ground leg portion 38 of the shield member 30 are soldered to the ground pad PG of the circuit board. In addition, in this embodiment, it can be seen clearly in FIG. 1 and FIG. Pad PG. That is, it can be seen in FIG. 3(B) that the ground pad PG is one pad extending in the width direction of the connector to include both the ground connection portion 24G and the narrow ground leg portion 38. It is formed and shared as a ground pad for each of the ground connection portion 24G and the narrow ground leg portion 38 .

As can be seen in FIG. 2 , the shield member 30 is held by pressing both edge portions of the held recess of the held side plate portion 32 into the shield member holding groove 15A- 2 from above the socket-side housing 10 . In the state where the installation of the cover member 30 is completed, it can be seen from FIG. 1 and FIG. 3(C) that the base of the contact piece 35 of the cover member 30 is accommodated in the horizontal groove portion 14A of the contact piece accommodating groove 14A. -1 and the free end side protrudes into the receiving portion 16 . In addition, the narrow ground leg portion 38 is located at substantially the same position as the ground connection portion 24G in the terminal array direction, and is located outside the signal connection portion 24S and the ground connection portion 24G in the connector width direction.

Next, the structure of the plug connector 2 as a mating connector will be described based on FIGS. 1 and 5 . The plug-in connector 2 has: a plug-side housing 40 in a substantially rectangular parallelepiped shape; the long side direction of the plug-side housing 40 is used as the terminal arrangement direction, and two rows of equal intervals are formed by the plug-side housing 40 A plurality of counterpart terminals 50 held in a row; and a plurality of ground metal fittings 60 held at both ends (end walls 45 described later) of the plug-side housing 40 in the longitudinal direction. As shown in FIGS. 1 and 5 , the plug connector 2 is fitted and connected to the receptacle connector 1 in a position where a receiving portion 46 (see FIG. 5(A) and (B)) described later opens downward.

The plug-side housing 40 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 plug-side housing 40 has a bottom wall 41 parallel to the mounting surface, and a frame-shaped peripheral wall 43 as a fitting portion rising downward from the bottom wall 41 as seen in FIGS. 1 and 5 . The peripheral wall 43 has: a pair of side walls 44 extending in the direction in which the terminals are arranged; and a pair of ends extending in the width direction of the connector at right angles to the direction in which the terminals are arranged and connecting the ends of the pair of side walls 44 to each other. wall 45. A space surrounded by the peripheral wall 43 and opened downward is formed as a receiving portion 46 for receiving the protruding wall portion 12 of the receptacle connector 1 .

As can be clearly seen in FIG. 5(C), on the end wall 45, on both sides in the width direction of the connector, slits for connecting the ground metal The piece 60 is press-fitted into the held ground metal piece accommodating portion 45A. The two ground metal fitting accommodating portions 45A formed on one end wall have approximately U-shaped cross-sections perpendicular to the terminal arrangement direction, and are line-symmetric with respect to the central position in the width direction of the connector.

It can be seen in FIG. 5(C) that each ground metal fitting receiving portion 45A has an outer groove portion 45A extending through the vertical direction at an outer position in the width direction of the connector and opening outward in the width direction of the connector. -1; a holding hole 45A-2 extending upward from a position inside the outer groove 45A-1 in the connector width direction; and extending in the connector width direction and holding the outer groove 45A-1 with The lower portions of the hole portions 45A- 2 are connected to each other, and a connecting groove portion 45A- 3 opened downward.

The mating terminal 50 is produced by bending a strip-shaped piece obtained by punching out a metal plate in the thickness direction. The plurality of counterpart terminals 50 arranged in each column are mixed with counterpart signal terminals 50S and counterpart ground terminals 50G. In the present embodiment, the counterpart ground terminal 50G is provided one at each of two positions within the terminal array range corresponding to the ground terminal 20G of the receptacle connector 1 . That is, the counterpart ground terminal 50G is located between the two counterpart signal terminals 50S adjacent to each other in the terminal array direction. As can be seen in FIGS. 1 and 5 , the mating terminals 50 are integrally molded and held on 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 can be seen in FIG. 5(A), the counterpart signal terminal 50S is bent from the side wall 44 in a crank shape at substantially the same height position as the bottom wall 41 of the plug-side housing 40 and outward in the width direction of the connector. The protruding signal connection portion 51S; and the contact arm portion 52S which is continuous with the signal connection portion 51S and is bent downward in FIG. 5(A) and buried in the side wall 44 .

The contact arm portion 52S extends downward along the inner surface of the side wall 44 and its lower end is bent so as to be turned back upward on the outer side in the connector width direction. The plate surface of the portion extending along the inner surface of the side wall 44 is exposed to the receiving portion 46 so as to be flush with the inner surface of the side wall 44 . On the exposed plate surface of the contact arm portion 52S, a contact protrusion 22S-1 for receiving the terminal 20 of the receptacle connector 1 is formed so as to be in contact with the contact protrusion 22S-1. Contact recessed part 52S-1. In addition, the signal connection portion 51S protrudes outside the range of the plug-side housing 40 in the connector width direction, that is, protrudes outward from the outer surface of the side wall 44 . In addition, the signal connection portion 51S is exposed from the bottom wall 41 and connected by soldering to a signal pad (not shown) of the circuit board.

As can be seen in FIG. 5(B), the counterpart ground terminal 50G is formed in exactly the same shape as the counterpart signal terminal 50S, so the symbol "S" of the counterpart signal terminal 50S is replaced with "G" for the counterpart ground terminal 50G. Description omitted. In addition, the connection portion 51G to the counterpart ground terminal 50G is referred to as “ground connection portion 51G” in order to clearly distinguish it from the signal connection portion 51S of the counterpart signal terminal 50S.

The ground metal fitting 60 is manufactured by punching out the metal plate member while maintaining the flat surface of the metal plate member. As can be clearly seen in FIG. 5(C), the grounding metal piece 60 has: the outer leg portion 61 extending in the vertical direction in the outer groove portion 45A-1 of the plug-side housing 40; The held part 62 extending in the vertical direction; the connecting part 63 extending in the connector width direction in the connecting groove part 45A-3 and connecting the outer leg part 61 and the lower part of the held part 62 to each other; and the outer groove part 45A -1 is a ground leg 64 protruding outward from the upper end of the outer leg 61 in the width direction of the connector. In the outer leg portion 61, a contact with the shield member 30 of the receptacle connector 1 is formed so as to protrude outward in the width direction of the connector from the lower portion of the side edge of the outer leg portion 61 in FIG. 5(C). The contact protrusion 61A to which the sheet 35 elastically contacts.

The ground metal fitting 60 is held by the ground metal fitting accommodating portion 45A by pressing the held portion 62 into the holding hole portion 45A- 2 of the plug-side housing 40 from below in FIG. 5(C) . As can be seen in FIG. 5(C), the contact protrusion 61A protrudes from the outer groove portion 45A- 1 . In addition, the ground leg portion 64 is exposed from the bottom wall 41 and connected by soldering to a ground pad (not shown) of the circuit board.

Next, the connector fitting operation of the receptacle connector 1 and the plug connector 2 will be described based on FIGS. 1 and 6 . First, the receptacle connector 1 is mounted on the mounting surface of the circuit board corresponding to the receptacle connector 1 by soldering. Specifically, the signal connection portions 24S of the signal terminals 20S are respectively soldered to the signal pads PS corresponding to the signal connection portions 24S. In addition, the ground connection portion 24G of the ground terminal 20G and the narrow ground leg portion 38 of the cover member 30 corresponding to the ground connection portion 24G are connected by soldering to the same ground pad PG. Further, the wide-width ground leg portions 37 of the shield member 30 are respectively connected by soldering to the ground pads PG corresponding to the wide-width ground leg portions 37 .

In addition, the plug connector 2 is mounted on the mounting surface of the circuit board corresponding to the plug connector 2 by soldering. Specifically, the signal connection portion 51S of the counterpart signal terminal 50S, the ground connection portion 51G of the counterpart ground terminal 50G, and the ground leg portion 64 of the ground metal member 60 are soldered to corresponding signal pads or ground pads, respectively.

Next, as can be seen in FIG. 1 , the receptacle connector 1 is made in a posture in which the receiving portion 16 opens upward, and the receiving portion 46 ( Referring to Fig. 5(A), (B)) it is set to the posture of opening downward. Then, the plug connector 2 is lowered while maintaining the posture shown in FIG. The peripheral wall 43 of the plug connector 2 enters the receiving portion 16 of the receptacle connector 1 from above. As a result, it can be seen in FIG. 5(A) and (B) that 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 enter into the plug connection respectively. The contact recess 52S-1 of the counterpart signal terminal 50S of the device 2 and the contact recess 52G-1 of the counterpart ground terminal 50G of the device 2 allow the terminals to electrically contact each other.

In addition, it can be seen in FIG. 5(C) that the contact protrusions 61A of the ground metal piece 60 of the plug connector 2 are respectively connected by connecting the contact pieces 35 of the shield member 30 of the corresponding receptacle connector 1 toward each other. The outer side in the width direction of the device is pressed and elastically deformed, thereby contacting the contact piece 35 with a contact pressure.

In this way, the terminals 20 and 50 are connected to each other, the contact pieces 35 of the shield member 30 and the contact protrusions 61A of the ground metal fitting 60 are connected to each other, and the connector fitting operation is completed.

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 at a position on the outer side in the connector width direction than the connection portion 24 of the terminal 20 . Therefore, it is not necessary to position the ground leg portion of the shield member between adjacent terminals in the terminal array direction, and accordingly, the distance between the terminals can be made close. Therefore, the number of signal terminals 20S can be increased without increasing the size of the receptacle connector 1 in the terminal array direction. In addition, without increasing the number of signal terminals 20S, it is possible to reduce the size of the receptacle connector 1 in the terminal array direction so that the distance between the terminals becomes close. The connector can be miniaturized in the terminal arrangement direction.

In addition, in the present embodiment, the narrow-width ground leg portion 38 of the shield member 30 does not come too close to the connection portion 24 of the terminal 20 in the terminal array direction. In other words, it is not necessary to make both the connecting portions of the two terminals that are too close to the grounding leg portion on both sides of the grounding leg portion of the shield member to be ground connection portions as in the past. Therefore, according to the present embodiment, the number of ground terminals corresponding to one ground leg can be reduced by one, and the receptacle connector 1 can be downsized in the terminal array direction also in this point. Furthermore, in this embodiment, the narrow-width ground leg portion 38 of the shield member 30 has an overlapping range with the ground terminal 20G in the above-mentioned terminal array direction, so that the connector can further reduce the overlapping range in the terminal array direction. amount.

In addition, in the receptacle connector 1 according to this embodiment, the narrow ground leg portion 38 of the shield member 30 is located outside the ground connection portion 24G corresponding to the narrow ground leg portion 38 in the connector width direction ( Referring to FIG. 3(B)), and in the terminal arrangement direction, in the area between the signal connection parts 24S adjacent to the two sides of the above-mentioned ground connection part 24G, there is no connection with the signal connection part 24S in the terminal arrangement direction. The overlapping range (see Figure 4). Therefore, even if the narrow ground leg portion 38 is arranged close to the ground connection portion 24G of the ground terminal 20G in the connector width direction, it does not approach the signal connection portion 24S on both sides too much. Therefore, on the circuit board, the ground pads PG corresponding to the ground connection portion 24G and the narrow ground leg portion 38 can be connected between the signal pads PS respectively corresponding to the signal connection portions 24S on both sides. Ensure sufficient distance in the arrangement direction. As a result, there is no possibility 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 and connected when the connector is mounted. Therefore, the connecting portion 24 of each terminal 20 and the narrow ground leg portion 38 of the cover member 30 can be reliably connected to the corresponding pads.

In addition, in this embodiment, the grounding leg 24G is located within the range of the receptacle-side housing 10 in the width direction of the connector, that is, it is located inside the outer surface of the side wall 14, so it can be positioned in the width direction of the connector. The narrow-width grounding leg portion 38 of the shield member 30 is disposed close to the connection portion 24 of the terminal 20 . Therefore, even if the narrow ground leg portion 38 is located outside the connection portion 24 of the terminal 20 in the connector width direction, the size of the receptacle connector 1 is slightly larger in the connector width direction than conventional ones. It is also possible to suppress the amount of this increase to a minimum.

In this 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, but instead of this, the ground connection portion 24G and the narrow ground leg portion 38 may be connected to different pads for grounding, respectively. In this case, on the circuit board, the ground pad to which the ground connection portion 24G is connected and the ground pad to which the narrow ground leg portion 38 is connected are positioned close to each other in the connector width direction. However, if the ground connection portion 24G and the narrow ground leg portion 38 are connected to the corresponding different above-mentioned ground pads by soldering when the connector is mounted, even in this case, since they are the same ground pad so that won't cause any problems.

In addition, in this embodiment, the ground connection portion 24G and the narrow ground leg portion 38 are offset to one side in the terminal arrangement direction, but instead of this, for example, the ground connection portion 24 and the narrow ground leg portion 38 may be set as The centers in the direction in which the terminals are arranged coincide 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 width direction. Therefore, before mounting the receptacle connector 1 on the circuit board, it is possible to easily confirm visually whether the narrow ground leg portion 38 and the ground connection portion 24G are both flat and at the same height, and after mounting, it is possible to check whether the narrow ground leg portion 38 and the ground connection portion 24G are flat and at the same height. Whether or not both the narrow ground leg portion 38 and the ground connection portion 24G are securely soldered to the ground pad PG of the circuit board can be easily confirmed.

In addition, in the present embodiment, the entire narrow-width ground leg portion 38 is located within the range of the width dimension of the ground connection portion 24G in the direction of the terminal arrangement, but instead of this, only a part of the narrow-width ground leg portion 38 is positioned within the range of the width dimension of the terminal arrangement direction. Within the range of the width dimension of the ground connection portion 24G, the narrow ground leg portion 38 and the ground connection portion 24G may be offset from each other in such a manner as to have a partially overlapping range. 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 width direction. Therefore, before mounting the receptacle connector 1 on the circuit board, it is possible to easily confirm visually whether the narrow ground leg portion 38 and the ground connection portion 24G are both flat and at the same height, and after mounting, it is possible to check whether the narrow ground leg portion 38 and the ground connection portion 24G are flat and at the same height. Whether or not both the narrow ground leg portion 38 and the ground connection portion 24G are securely soldered to the ground pad PG of the circuit board can be easily confirmed.

In addition, in this embodiment, the ground connection portion 24G and the narrow ground leg portion 38 are positioned so as to partially overlap each other. However, for example, the ground connection portion and the ground leg portion may be formed to have the same size in the terminal arrangement direction. , and the centers in the terminal arrangement direction coincide with each other, that is, the entire range in the terminal arrangement direction overlaps with each other. In addition, the ground leg portion may be formed to have a larger size than the ground connection portion in the terminal array direction, and the ground leg portion may be provided at a position including the entire ground connection portion in the terminal array direction.

When the ground connection portion and the ground leg are provided in the above-mentioned size and positional relationship, even if the ground leg is viewed from the outside in the width direction of the connector, that is, in the direction at right angles to the plate surface of the side plate of the shield member, It is not possible to visually confirm the ground connection part, and there is no problem as long as both the ground connection part and the ground leg part can be visually confirmed in a direction having an angle with the above-mentioned connector width direction. That is, before mounting the receptacle connector 1 on the circuit board, it can be visually confirmed from a direction having an angle with the above-mentioned connector width direction whether the narrow ground leg portion 38 and the ground connection portion 24G are both flatly positioned on the same surface. and, after mounting, it can be easily confirmed visually from a direction having an angle with the above-mentioned connector width direction whether the narrow grounding leg portion 38 and the grounding connection portion 24G are reliably connected to the grounding pad of the circuit board. PG brazing connection is sufficient.

In this embodiment, two ground terminals 20G are provided among the terminals arranged in each column, but the number of ground terminals 20G is not limited thereto, and may be one, or three or more. In order to strengthen the ground function, it is preferable to provide a plurality of ground terminals 20G. In addition, among the two terminal rows held by the receptacle-side housing 10 , the positions and numbers of the signal terminals 20S and the ground terminals 20G may be different between one terminal row and the other terminal row. In addition, in order to use the receptacle connector 1 for high-speed signal transmission, in each terminal row, it is preferable that the ground terminal 20G is located on both sides of the two signal terminals 20S adjacent to each other, that is, the arrangement of the ground terminal 20G is repeated. , the signal terminal 20S, and the arrangement of the signal terminal 20S.

The shape and positional relationship of the connecting portion 24 of the terminal 20 and the narrow grounding leg portion 38 of the shield member 30 in the present invention are not limited to the embodiments described in FIGS. 1 to 5 , for example, as shown in FIG. ), (B) as shown in various deformation. 6(A) is a cross-sectional view showing a modified example of this embodiment, and FIG. 6(B) is a cross-sectional view showing another different modified example, from the position of the ground terminal in the terminal arrangement direction of the connector and The section in the direction perpendicular to the terminal arrangement direction is shown. 6 (A), (B) in each modification, for the part corresponding to the embodiment shown in FIGS.

In the present embodiment described above based on FIGS. 1 to 5 , it can be clearly seen in FIG. 3(B) that the ground connection portion 24G of the ground terminal 20G is located within the range of the receptacle-side housing 10 in the connector width direction. In addition, the lower end of the narrow ground 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 receptacle-side housing 10 . In contrast, in the modified example shown in FIG. 6(A), the ground connection portion 24G' of the terminal 20' protrudes outward in the connector width direction from the receptacle-side housing 10', and the shield member 30 The lower portion of the ground leg portion 38' of ' is bent so as to avoid interference with the ground connection portion 24G', which is different from the above-mentioned embodiment in that. Specifically, the lower portion of the ground leg portion 38' is bent outward in the connector width direction and then bent downward.

In the modified example of FIG. 6(A), compared with the embodiment shown in FIG. 3(B), it is judged that the ground connection portion 24G' is formed larger in the width direction of the connector, so that the ground connection portion 24G' can be greatly secured. The contact area with the ground pad PG can be more reliably soldered.

In the modified example of FIG. 6(B), the lower portion of the grounding leg portion 38" of the shield member 30" is bent, which is different from the present embodiment described above based on FIGS. 1 to 5 (refer to FIG. 3( B)). In the modified example of FIG. 6(B), the lower part of the grounding leg 38" does not extend outward in the connector width direction, so compared with the present embodiment, the grounding leg 38" in the connector width direction Smaller size. Therefore, on the circuit board, the dimension in the connector width direction of the ground pad connected to the ground connection portion 24G" of the ground terminal 20G" and the ground leg portion 38" of the cover member 30" is also reduced. As a result, the space available for mounting other electronic devices and the like increases on the mounting surface of the circuit board, so that the degree of freedom in circuit design increases.

Claims (4)

1. An electrical connector for a circuit substrate, which is configured on a circuit substrate, It includes: a housing extending in a direction parallel to a mounting surface of the circuit board as a longitudinal direction; a plurality of terminals arranged and held in the housing with the longitudinal direction as a terminal arrangement direction; and mounted on the housing. parts of the shield, The housing has: a bottom wall facing a mounting surface of the circuit board and extending along the terminal arrangement direction; a side wall extending along the direction in which the terminals are arranged, The plurality of terminals are mixed signal terminals and ground terminals arranged and held on the side wall. The signal terminals have signal connection parts exposed from the bottom wall so as to be connected to the signal pads of the circuit board. The ground terminals have The bottom wall is exposed so as to be connected to the ground connection part of the ground pad of the circuit board, The cover member has: a side plate portion extending along the outer surface of the side wall in a terminal array range at a position outside the terminal in the width direction of the connector; The position corresponding to the ground connection part extends from the side plate part to the ground leg part of the circuit board, The electrical connector for a circuit board described above is characterized in that, The ground connection portion of the ground terminal is located between the signal connection portions of two adjacent signal terminals in the terminal array direction, The ground leg portion of the shield member is connected to the ground pad of the circuit board at a position outside the signal connection portion and the ground connection portion in the width direction of the connector, and is connected to the ground connection portion corresponding to the ground leg portion. In the region between the signal connection parts on both sides of the part, there is a range overlapping with the ground connection part in the terminal arrangement direction. 2. The electrical connector for a circuit board according to claim 1, wherein: The ground connection portion of the ground terminal and the ground leg portion of the shield member are offset from each other so as to partially overlap in the terminal array direction. 3. The electrical connector for a circuit board according to claim 1 or 2, wherein: The ground connection portion of the ground terminal and the ground leg portion of the shield member are connected to one common pad as the respective ground pads. 4. An electrical connector mounting body, characterized in that, The electrical connector for a circuit board according to any one of claims 1 to 3 is mounted on a circuit board.