KR101655208B1 - Electric connector for circuit board and electric connector mounting body - Google Patents

Abstract

There is provided an electrical connector for a circuit board and an electrical connector mounting body which can reliably connect a connecting portion of each terminal and a ground leg portion of a shielding member to corresponding pads without increasing the size in the terminal arrangement direction.
The ground connection portion 24G of the ground terminal 20G is located between the signal connection portions 24S of the two signal terminals 20S adjacent to each other in the terminal arrangement direction, The portion 38 is connected to the ground pad of the circuit board at a position outside the signal connecting portion 24S and the ground connecting portion 24G in the connector width direction, In the region between the signal connection portions 24S located on both sides of the ground connection portion 24G corresponding to the ground connection portion 24G.

Description

ELECTRIC CONNECTOR FOR CIRCUIT BOARD AND ELECTRIC CONNECTOR MOUNTING BODY BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention 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 a circuit board.

As such a connector, for example, an electric connector for a circuit board disclosed in Patent Document 1 is known. Patent Document 1 discloses an electrical connector for a circuit board, which is disposed on a circuit board and is mated with a mating connector from above. The electrical connector for a circuit board includes a housing having a substantially rectangular parallelepiped outer shape extending in one direction parallel to a circuit board in a longitudinal direction and a plurality of terminals arranged in the housing in the longitudinal direction in a terminal arrangement direction, And two shells (shield members) attached to the housing.

The housing has two side walls extending in the terminal arrangement direction and facing each other in a connector width direction (a direction perpendicular to the terminal arrangement direction), and each side wall has a plurality of terminals As shown in Fig. The terminals are all made in the same shape and the connecting portion for connecting to the pad formed on the circuit board extends outward in the connector width direction at the same height position as the bottom surface of the housing.

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

The shell includes a side plate portion extending in the terminal arrangement direction so as to cover the outer side surface of the side wall over the terminal arrangement range and a plurality of protrusions extending from the bottom edge of the side plate portion at a plurality of positions in the terminal arrangement direction, And a ground leg portion bent outwardly in the connector width direction. The ground leg portion is located at the same position as the connection portion of the terminal, in the central region within the terminal arrangement range and at the both side positions of the terminal arrangement range and the terminal arrangement range in the terminal arrangement direction, So as to form a row. The ground leg portions formed in the central region are located between the two adjacent ground connection portions formed in the central region, and are close to the ground connection portions. Therefore, when the electrical connector for circuit boards is mounted on the circuit board, the ground leg portions and the two ground connection portions located on both sides thereof are connected to one common ground pad which covers the leg portions and the connecting portions at one time .

Japanese Patent Application Laid-Open No. 2008-218095

The electrical connector for a circuit board according to Patent Document 1 requires two ground terminals in the central region of the terminal arrangement range. Therefore, compared with the case where only one ground terminal is formed in the central region, the number of ground terminals It is necessary to increase the number of signal terminals to another position in the terminal arrangement direction by one more, and the connector in the terminal arrangement direction becomes large.

For example, if the number of terminals of the electric connector for circuit boards of Patent Document 1 is reduced by one and only one ground terminal of the central region is provided, the connector in the terminal arrangement direction can be downsized. In this case, however, since the ground leg portion of the shell is located between the ground terminal and the signal terminal adjacent to the ground terminal in the central region, the signal connecting portion between the ground leg portion and the signal terminal becomes excessively close . Therefore, also in the circuit board, the ground pad to which the ground leg section is connected and the signal pad to which the signal connecting section is connected are formed at positions which are excessively close to each other. Therefore, There is a possibility that both pads are electrically short-circuited.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a circuit board electrical connector and an electrical connector mounting structure capable of reliably connecting the connection portions of the respective terminals and the ground leg portions of the shield members to the corresponding pads, And to provide the above-mentioned object.

<First Invention>

An electrical connector for a circuit board according to a first invention is an electrical connector for a circuit board disposed on a circuit board, comprising: a housing extending in one direction parallel to a mounting surface of the circuit board in a longitudinal direction; And a shield member attached to the housing, wherein the housing has a bottom wall extending in the terminal arrangement direction so as to face the mounting surface of the circuit board, And sidewalls extending from both side portions of the bottom wall in a connector width direction perpendicular to the terminal arrangement direction and extending in the terminal arrangement direction, wherein the plurality of terminals are formed by a combination of a signal terminal and a ground terminal Wherein the signal terminals are arranged and held at the side walls so as to be connected to the signal pads of the circuit board Wherein the ground terminal has a ground connection portion exposed from a bottom wall to be connected to a ground pad of the circuit board, and the shield member has a signal connection portion exposed on the outer side of the terminal in the width direction of the connector And a ground leg portion extending 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 according to 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 arrangement direction, and the ground bridge portion of the shield member, And a signal pad connected to the ground pad of the circuit board at a position outside the connector in the connector width direction with respect to the ground connection portion and in a region between signal connection portions located on both sides of the ground connection portion corresponding to the ground leg portion And a region overlapping with the ground connection portion in the terminal arrangement direction.

In the electrical connector for a circuit board as described in the above-mentioned Patent Document 1, since there are many terminals to be arranged, in order to avoid a tendency to increase in the terminal arrangement direction, a demand for downsizing by high- 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 connecting portion and the ground connecting portion in the connector width direction. As a result, it is not necessary to position the ground leg portions of the shielding members between the adjacent terminals in the terminal arrangement direction, so that the distance between the terminals can be reduced correspondingly. Therefore, the number of signal terminals can be increased without enlarging the connector in the terminal arrangement direction. Further, when it is not necessary to increase the number of signal terminals, the connector can be downsized in the terminal arrangement direction by making the distance between the terminals narrower.

Further, in the present invention, the ground leg portion of the shield member does not excessively approach the connection portion of the terminal in the terminal arrangement direction. In other words, it is not necessary to make both of the connection portions of the two terminals, which are excessively close to the ground leg portion, on both sides of the ground leg portion of the shield member as the ground connection portion. Therefore, the number of the ground terminals can be reduced by one, and the connector can be downsized in the terminal arrangement direction. Further, in the present invention, since the ground leg portion of the shield member is located with a range overlapping with the ground terminal in the terminal arrangement direction, the connector can be further miniaturized in the terminal arrangement direction by the overlapping range.

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 connector width direction, and in the terminal arrangement direction, And are located in regions between adjacent signal connecting portions. Therefore, even if the ground leg portion is disposed so as to approach the ground connection portion of the ground terminal in the connector width direction, the signal connection portions on both sides are not excessively close to each other. Therefore, in the circuit board, the ground pads corresponding to the ground leg portions are connected to the ground pads corresponding to the ground connection portions in the width direction of the connector, and the ground pads corresponding to the signal pads corresponding to the signal connection portions on both sides A sufficient distance can be ensured in the terminal arrangement direction. As a result, when the connector is mounted, there is no possibility that the ground pad corresponding to the ground leg portion and the two signal pads are erroneously connected by solder. Further, even when the ground pad, that is, the ground pad corresponding to the ground leg portion and the ground pad corresponding to the ground connection portion are connected by solder, they are equally grounded, There is no problem. Therefore, the connecting portions of the respective terminals and the ground leg portions of the shielding member can be reliably connected to the corresponding pads, respectively.

Further, in the present invention, the ground leg portion can be formed close to the connection portion of the terminal in the connector width direction. Therefore, since the ground leg portion is positioned outside the connection portion of the terminal in the connector width direction, the increase in the size of the connector in the connector width direction can be minimized as compared with the conventional art.

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 have a range partially overlapping in the terminal arrangement direction. Even when the electrical connector for a circuit board is viewed from the outside in the width direction of the connector, not only the ground leg but also the ground connection can be seen with the naked eye by displacing the ground connection portion and the ground leg portion as described above. Therefore, before mounting the receptacle connector 1 on the circuit board, whether or not both of the ground leg portion and the ground connection portion are flush with the same height can be visually confirmed easily. It is also possible to visually confirm whether or not both of the ground leg portion and the ground connection portion are appropriately soldered to the ground pad of the circuit board after the connector is mounted on 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 pad commonly used as a ground pad.

<Second invention>

An electrical connector mounting body according to a second invention 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, since the ground leg portion of the shield member is located outside the connection portion of the terminal in the connector width direction, it is not necessary to locate the ground leg portion between adjacent terminals in the terminal arrangement direction, , The distance between the terminals can be made narrow. Therefore, the number of signal terminals can be increased without enlarging the connector in the terminal arrangement direction. Further, when it is not necessary to increase the number of signal terminals, the connector can be downsized in the terminal arrangement direction by making the distance between the terminals narrower. In addition, since the ground leg portion is located in overlap with the ground connection portion of the ground terminal in the terminal arrangement direction, the connector can be downsized in the terminal arrangement direction.

Further, since the ground leg portion of the shield member is located in the region between the signal connecting portions located on both sides of the ground connecting portion corresponding to the ground leg portion, even if the ground leg portion is brought close to the connecting portion of the terminal in the connector width direction, A sufficient distance can be secured between the leg portions and the signal connecting portions of the signal terminals in the terminal arrangement direction and the connecting portions of the respective terminals and the ground leg portions of the shield members can be reliably connected to the corresponding pads. Further, by making the ground leg portion close to the connection portion of the terminal in the connector width direction, it is possible to limit the size of the connector in the connector width direction to a minimum.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 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 connector fitting; Fig.
Fig. 2 is a perspective view showing a state before attachment of the shield member of the receptacle connector of Fig. 1; Fig.
FIG. 3 is a cross-sectional view taken along a plane perpendicular to the terminal arrangement direction of the receptacle connector of FIG. 1, wherein FIG. 3A shows a cross section at the position of the signal terminal, FIG. 3B shows a cross section at the position of the ground terminal, Fig. 3 (C) shows a cross section at the position of the contact piece of the shield member.
Fig. 4 is a side view of a portion of the receptacle connector of Fig. 1 in the connector width direction. Fig.
5 (A) is a cross-sectional view at the position of the signal terminal, and Fig. 5 (B) is a cross-sectional view taken along the line A- Fig. 5C shows a cross section at the position of the contact piece of the shield member. Fig.
6A is a cross-sectional view showing a modification of the present embodiment, and FIG. 6B is a cross-sectional view showing still another modified embodiment. In the terminal arrangement direction of the connector, As shown in Fig.

(Mode for carrying out the invention)

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying 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 which is a mating connector, and shows a state before connector fitting. Fig. 2 is a perspective view showing the state before the shielding member 30 of the receptacle connector 1 of Fig. 1 is attached. Fig. Fig. 3 is a cross-sectional view taken along a plane perpendicular to the terminal arrangement direction of the receptacle connector 1 of Fig. 1. Fig. 3 (A) is a cross section at the position of the signal terminal 20S, Fig. 3C shows a section at the position of the terminal 20G, and Fig. 3C shows a section at the position of the contact piece 35 of the shielding member 30. As shown in Fig.

The receptacle connector 1 and the plug connector 2 as the mating connector of the receptacle connector 1 according to the present embodiment are each provided with an electric connector for a circuit board (not shown) disposed on a mounting surface of a different circuit board , And a connector assembly in which the direction perpendicular to the mounting surface of each circuit board (the vertical direction in Fig. 1) is set as the insertion direction.

2, the receptacle connector 1 includes a receptacle-side housing 10 having an approximately rectangular parallelepiped outer shape, and a receptacle-side housing 10 having a longitudinal direction of the receptacle- A plurality of terminals 20 that are arranged and held at equal intervals in two rows by a shield member (not shown) attached to the receptacle side housing 10 so as to cover the peripheral wall 13 of the receptacle side housing 10 30). The receptacle connector 1 is disposed and mounted on a circuit board in a posture shown in Fig.

The receptacle-side housing 10 is made of, for example, an electrical insulating material such as resin, and extends in one direction parallel to the mounting surface of the circuit board in the longitudinal direction (terminal arrangement direction). The receptacle-side housing 10 has a bottom wall 11 (see Fig. 3 (C)) parallel to the above-mentioned mounting surface, and an upper side wall 11 And a frame-like peripheral wall 13 that stands up from the bottom wall 11 and surrounds the projection wall 12. The projection 12 is formed by a plurality of projections 12, The peripheral wall 13 has a pair of side walls 14 extending in the terminal arrangement direction and a pair of side walls 14 extending in the connector width direction perpendicular to the terminal arrangement direction, And has a pair of end walls 15 to be connected. An annular space opened upward between the protruding wall portion 12 and the peripheral wall 13 is formed in a space for accommodating the peripheral wall 43 as a fitting portion of the plug connector 2, (16).

The receptacle side housing 10 is provided with a terminal accommodating portion 17 for holding the terminal 20 in two rows symmetrical with respect to the longitudinal center line of the protruding wall portion 12 in the connector width direction, And are arranged at equal intervals in the direction of the arrow. Each terminal accommodating portion 17 includes a vertical groove portion 17A which extends from the side surface of the projecting wall portion 12 and extends in the vertical direction, And a terminal holding hole portion 17C penetrating in the vertical direction in the side wall 14. The terminal holding hole portion 17C extends in the width direction of the connector.

As shown in Fig. 1, on the outer surface of the end wall 15 located on the extension of the outer surface of the side wall 14 of the receptacle-side housing 10, a shield for holding a shield member 30 A member retention support portion 15A-1 is formed protruding from the lower portion of the outer side surface in the connector width direction. Shielding member holding grooves 15A-2 extending from the side surface and extending in the vertical direction are formed on both side surfaces (surfaces perpendicular to the terminal arranging direction) of the shield member holding portion 15A-1.

The contact piece receiving groove 14A for receiving the contact piece 35 of the shield member 30 described later is formed on the inner side surface of the side wall 14 at a position outside the terminal arrangement range in the terminal arrangement direction, (See Fig. 3 (C)). 3 (C), the contact piece receiving groove 14A includes a lateral groove portion 14A-1 that is recessed from the upper surface of the side wall 14, and a vertical groove portion 14A-1 that is recessed from the inner side surface of the side wall 14 -2).

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

3 (A), the signal terminal 20S includes a base portion 21S extending in the connector width direction in the lateral groove portion 17B of the terminal accommodating portion 17, a terminal accommodating portion 17 A contact arm portion 22S extending upward from one end of the base portion 21S in the longitudinal groove portion 17A of the base portion 21A and a contact arm portion 22S extending upward from the base portion 21 at a position near the other end of the base portion 21 A holding arm portion 23S held in the terminal holding hole portion 17C of the terminal receiving portion 17 and a signal connecting portion 24S extending downward from the other end of the base portion 21S .

The contact arm portion 22S is resiliently deformable in the connector width direction and the contact projection portion 22S-1 protruding toward the outside in the connector width direction at the upper end of the contact arm portion 22S, Respectively. The holding arm portion 23S is formed with a holding projection 23S-1 projected from the intermediate position in the vertical direction toward the outside in the connector width direction. The signal connecting portion 24S is located within the range of the housing 10 on the receptacle side in the connector width direction, that is, inside the outer side surface of the side wall 14. The lower end of the signal connecting portion 24S is exposed from the bottom wall 11 and is connected to a signal pad PS of a circuit board (not shown) by soldering.

The signal terminal 20S having such a configuration is inserted into the terminal holding hole portion 17C formed in the side wall 14 from the lower side (the bottom wall 11 side) of the holding arm portion 23S of the terminal 20 And is attached to the receptacle-side housing 10. The holding projection 23S-1 of the holding arm 23S fits on the inner wall surface of the terminal holding hole 17C so that the signal terminal 20S is held in the terminal holding portion 17 Respectively.

3 (B), since the ground terminal 20G has exactly the same shape as the signal terminal 20S, the symbol "S" for the signal terminal 20S is set to the ground terminal 20G Quot; G &quot;, and a description thereof will be omitted. 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. The ground pad to which the ground connection portion 24G is connected by soldering is called a &quot; ground pad PG &quot; (see Fig. 3B). 3 (B), the ground connection portion 24G is also located within the range of the receptacle-side housing 10 in the connector width direction, that is, the outer side surface of the side wall 14 As shown in FIG. The lower end of the ground connection portion 24G is exposed from the bottom wall 11 and is connected to the ground pad PG of the circuit board (not shown) by soldering.

As shown in Figs. 1 and 2, the shield member 30 is formed by bending the metal plate member in the thickness direction after punching the metal plate member into a predetermined shape. 1, the shield member 30 includes an upper plate portion 31 for covering the upper surface of the both end walls 15 of the receptacle-side housing 10, and an upper plate portion 31 for covering the upper end portion of the upper plate portion 31 in the connector width direction. A holding side plate portion 32 bent downward at right angles and extending in the terminal arrangement direction to cover the side wall 14 outside the terminal arrangement range and held by the receptacle side housing 10, 33 that are bent toward the inside of the connector in the width direction of the connector at the side edge of the side wall 32 and cover the end wall of the both side walls 15, And a side plate portion 34 extending in the terminal arrangement direction along the side walls 14 to cover the outer side surface of the side wall 14 in the terminal arrangement range.

2, the holding side plate portion 32 includes a contact piece 35 which is bent downward from the inside in the connector width direction at the upper edge thereof and extends into the housing portion 16, Of the holding side plate portion 32 at a position substantially coincident with the contact piece 35 in the terminal arranging direction and the holding recessed portion 36 opened downward from the outer side position of the contact piece 35 And a wide ground leg portion 37 extending from the lower edge.

3 (C), the contact piece 35 is formed such that its base portion (the portion on the side connected to the upper edge of the held side plate portion 32) is in contact with the contact piece housing portion 10 of the receptacle- But the free end side (lower end side) portion is located outside the longitudinal groove portion 14A-2 of the contact piece receiving groove 14A and is accommodated in the accommodating portion 16 in the groove 14A-1 of the groove 14A . This free end side portion is elastically deformable in the plate thickness direction (connector width direction). In the connector fitting state, the contact protruding portion 61A of the ground fitting (metal fitting) 60 of the plug connector 2, And contact with each other. The elastic deformation of the free end side portion is permitted by the longitudinal groove portion 14A-2 of the contact piece receiving groove 14A (see Fig. 5 (C)).

As shown in Fig. 1, the retention concave portion 36 is adapted to receive the shield member retention portion 15A-1 of the receptacle-side housing 10 from below, and the retention concave portion 36 2 is press-fitted into the shield member holding groove 15A-2 of the shield member holding portion 15A-1 so that the shield member 30 is fitted to the receptacle side housing 10 . The wide ground leg portion 37 is bent at a right angle at the lower edge of the holding side plate portion 32 and extends toward the outside in the connector width direction.

1, the side plate portion 34 is provided at a position corresponding to the two positions in the terminal arrangement direction, specifically, the ground connection portion 24G of the ground terminal 20G, Narrow-width ground leg portions 38 that are narrower than the ground narrow leg portions 38. The narrow ground leg portion 38 is bent at a right angle at the bottom edge of the side plate portion 34 and extends toward the outside in the connector width direction. 3 (B) and 3 (C), the wide-width leg portion 37 and the narrow-width ground leg portion 38 are connected to the connection portion 24 of the terminal 20, And is located on the outer side of the connecting portion 24S and the ground connecting portion 24G.

Fig. 4 is a side view of a part of the receptacle connector 1 of Fig. 1 in the connector width direction. 4, the narrow ground leg portions 38 are formed in a region (a region between the signal connecting portions 24S located on both sides of the ground connecting portion 24G corresponding to the narrow ground leg portion 38) Quot; A &quot; in Fig. 4). That is, the narrow ground leg portion 38 does not have a range overlapping with the signal connecting portion 24S located on both sides in the terminal arrangement direction (the left-right direction in Fig. 4). The narrow ground leg portion 38 is located so as to overlap with the ground connection portion 24G in the terminal arrangement direction.

4, the width dimension W1 in the terminal arrangement direction of the narrow ground leg portion 38 of the shield member 30 is set to a width dimension in the same direction of the ground connection portion 24G (Plate thickness dimension) W2. The narrow ground leg portion 38 is biased 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, even when the receptacle 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 ground leg portion 38 but also the ground connection portion 24G, . As a result, whether or not both of the narrow ground leg portion 38 and the ground connection portion 24G are flush with the same height before mounting the receptacle connector 1 on the circuit board can be easily confirmed visually . It is also possible to visually confirm whether 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 after the receptacle connector 1 is mounted on the circuit board . &Lt; / RTI &gt;

1, the wide-width leg portion 37 and the narrow-width ground leg portion 38 of the shield member 30 are solder-connected to the ground pad PG of the circuit board. 1 and 3 (B), the narrow ground leg portion 38 is connected to the ground connecting portion 24G corresponding to the narrow ground leg portion 38 in the present embodiment, And is connected to the pad PG. 3 (B), the ground pad PG is provided with a plurality of ground connecting portions 24G and a plurality of narrow ground leg portions 38 extending in the connector width direction, And is commonly used as a ground pad for each of the ground connection portion 24G and the narrow ground leg portion 38. [

2, the shield member 30 is formed so as to extend from the upper side of the receptacle-side housing 10 to the shield member holding groove 15A-2 at the edge portion of the holding recessed portion of the holding side plate portion 32 And is retained by press-fitting. 1 and 3 (C), the contact piece 35 of the shielding member 30 is formed such that the base of the contact piece 35 is in contact with the side of the contact piece receiving groove 14A Is housed in the groove portion 14A-1, and the free end side portion is directed into the accommodating portion 16. [ The narrow ground leg portion 38 is positioned approximately at the same position as the ground connection portion 24G in the terminal arrangement direction and at the outside of the signal connection portion 24S and the ground connection portion 24G in the connector width direction.

Next, the configuration of the plug connector 2 which is a mating connector will be described with reference to Figs. 1 and 5. Fig. The plug connector 2 has a plug-side housing 40 having an approximately rectangular parallelepiped outer shape and a plug-side housing 40 having a longitudinal direction of the plug-side housing 40 aligned in the terminal arrangement direction, And a plurality of grounding brackets 60 which are held by both ends of the plug-side housing 40 in the longitudinal direction (end wall 45 described later) . 1 and 5, the plug connector 2 has a receptacle connector 1 (see Fig. 5 (A) and Fig. 5 (B) As shown in Fig.

The plug-side housing 40 is made of, for example, an electrically insulating material such as resin, and extends in one direction parallel to the mounting surface of the circuit board in the longitudinal direction (terminal arrangement direction). The plug-side housing 40 includes a bottom wall 41 parallel to the mounting surface and a peripheral wall 41 as a frame-like fitting portion that extends downward from the bottom wall 41 as shown in Figs. 1 and 5 And has a wall 43. The peripheral wall 43 includes a pair of side walls 44 extending in the terminal arrangement direction and a pair of side walls 44 extending in the connector width direction perpendicular to the terminal arrangement direction, And has a pair of end walls 45 for connection. A space surrounded by the peripheral wall 43 and opening downward is formed as a receiving portion 46 for receiving the projecting wall portion 12 of the receptacle connector 1. [

5C, a ground metal receiving portion 45A for press-fitting and holding the ground metal fitting 60 is formed on both sides of the end wall 45 in the connector width direction in the terminal arrangement direction And is formed in a slit shape extending at a right angle with respect to the plane. Each of the two ground metal receiving portions 45A formed on one end wall has a substantially U-shaped cross section perpendicular to the terminal arranging direction and has a line symmetry with respect to a central position in the connector width direction.

5C, each of the ground metal fittings 45A extends in the vertical direction at an outer side position in the connector width direction and extends outwardly in the connector width direction. 1 extending in the width direction of the connector, a holding hole portion 45A-2 extending upward from the inner side position of the outer groove portion 45A-1 in the connector width direction, an outer groove portion 45A- And a connecting groove portion 45A-3 that opens downward toward the bottom of the holding hole portion 45A-2.

The mating terminal 50 is made by bending the strip piece obtained by punching a metal plate in the thickness direction. The plurality of counterpart terminals 50 arranged in the respective rows include a counterpart signal terminal 50S and a counterpart ground terminal 50G. In the present embodiment, the relative ground terminals 50G are formed at two positions in the terminal arrangement range corresponding to the ground terminals 20G of the receptacle connector 1, respectively. That is, the relative ground terminal 50G is located between the two adjacent counter signal terminals 50S in the terminal arrangement direction. 1 and 5, the mating terminal 50 is integrally molded and held on each of the side walls 44 of the plug-side housing 40 and has an equal interval Respectively.

5 (A), the relative signal terminal 50S is bent in a crank shape from the side wall 44 at substantially the same height as the bottom wall 41 of the plug-side housing 40, And a contact arm portion 52S continuously bent from the signal connecting portion 51S and bent downward in Fig. 5A to be buried and held in the side wall 44 .

The contact arm portion 52S extends downward along the inner side surface of the side wall 44 and is bent so that its lower end is folded upward from the outside in the connector width direction. The plate surface 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. A contact recess portion 22S-1 for receiving the contact projection portion 22S-1 of the terminal 20 of the receptacle connector 1 and contacting the contact projection portion 22S-1 is provided on the surface of the contact arm portion 52S on which the contact arm portion 52S is exposed 52S-1 are formed to be pierced from the printing surface. The signal connecting portion 51S is directed outside the range of the plug-side housing 40 in the connector width direction, that is, outside the outer surface of the side wall 44. [ The signal connecting portion 51S is exposed from the bottom wall 41 and is connected to a signal pad (not shown) of the circuit board by soldering.

The relative ground terminal 50G has a completely identical shape to that of the counterpart signal terminal 50S as shown in Fig. 5 (B) "S" is replaced with "G", and a description thereof will be omitted. The connection portion 51G of the relative 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 counterpart signal terminal 50S.

The ground metal fitting 60 is made by punching the metal plate member while maintaining the flat surface of the metal plate member. 5C, the ground metal fitting 60 includes an outer leg portion 61 extending in the vertical direction in the outer groove portion 45A-1 of the plug-side housing 40, 3 and the pivotal support portion 62 extending in the connector width direction in the connection groove portion 45A-3 and extending in the width direction of the connector 45A- And a ground leg portion 64 which is directed outward from the upper end of the outer leg portion 61 in the connector width direction outside the outer groove portion 45A-1. A contact protruding portion 61A for resilient contact with the contact piece 35 of the shield member 30 of the receptacle connector 1 is formed on the outer leg portion 61 so as to be in contact with the outer leg portion 61 in Fig. And protrudes outward from the bottom of the side edge of the connector in the connector width direction.

The ground metal fitting 60 is inserted into the ground metal receiving portion 45A by being press-fitted into the holding hole portion 45A-2 of the plug-side housing 40 from below in Fig. 5C Respectively. As shown in Fig. 5 (C), the contact projection portion 61A protrudes from the outer groove portion 45A-1. The ground leg portion 64 is exposed from the bottom wall 41 and connected to a ground pad (not shown) of the circuit board by soldering.

Next, a connector fitting operation between the receptacle connector 1 and the plug connector 2 will be described based on Figs. 1 and 6. Fig. First, the receptacle connector 1 is mounted on a circuit board corresponding to the receptacle connector 1 by soldering. Concretely, the signal connecting portion 24S of the signal terminal 20S is solder connected to the signal pad PS corresponding to the signal connecting portion 24S. The ground connection portion 24G of the ground terminal 20G and the narrow ground leg portion 38 of the shield member 30 corresponding to the ground connection portion 24G are connected to the same ground pad PG by soldering. The wide ground leg portion 37 of the shield member 30 is solder connected to the ground pad PG corresponding to the wide ground leg portion 37, respectively.

In addition, the plug connector 2 is mounted by solder connection to the mounting surface of the circuit board corresponding to the plug connector 2. Concretely, the signal connecting portion 51S of the relative signal terminal 50S, the ground connecting portion 51G of the relative ground terminal 50G and the ground leg portion 64 of the ground metal fitting 60 are connected to the corresponding signal pad or And is solder-connected to the ground pad.

Next, as shown in Fig. 1, the receptacle connector 1 is set in an open position with the receptacle portion 16 facing upward, and the plug connector 2 (See Fig. 5 (A) and Fig. 5 (B)) are opened downward. The plug connector 2 is lowered while maintaining the attitude of Fig. 1 so that the protruding wall portion 12 of the receptacle connector 1 enters the receiving portion 46 of the plug connector 2 from below, The peripheral wall 43 of the plug connector 2 is caused to enter from the upper side into the accommodating portion 16 of the receptacle connector 1. [ As a result, as shown in Figs. 5A and 5B, the contact protruding portion 22S-1 of the signal terminal 20S of the receptacle connector 1 and the contact protruding portion 22G-1 of the ground terminal 20G, 1 rush into the contact concave portion 52S-1 of the relative signal terminal 50S of the plug connector 2 and the contact concave portion 52G-1 of the relative ground terminal 50G, respectively, Contact is made.

5C, the contact projection portions 61A of the ground metal fitting 60 of the plug connector 2 are engaged with the contact pieces 35 of the shield member 30 of the corresponding receptacle connector 1 ) Is pressed toward the outside in the connector width direction to elastically deform, thereby making contact with the contact piece 35 with contact pressure.

As described above, the terminals 20 and 50 are mutually connected, and the contact piece 35 of the shield member 30 and the contact projection portion 61A of the ground metal fitting 60 are connected to each other, thereby completing the connector fitting operation .

The narrow ground leg portion 38 of the shield member 30 is connected to the ground pad PG of the circuit board on the outer side in the connector width direction with respect to the connecting portion 24 of the terminal 20 in this embodiment. Therefore, it is not necessary to position the ground leg portions of the shielding members between the adjacent terminals in the terminal arrangement direction, so that the distance between the terminals can be reduced correspondingly. Therefore, the number of the signal terminals 20S can be increased without increasing the size of the receptacle connector 1 in the terminal arrangement direction. Further, when it is not necessary to increase the number of the signal terminals 20S, the receptacle connector 1 can be downsized in the terminal arrangement direction by making the distance between the terminals narrower. The connector can be miniaturized in the terminal arrangement direction.

In the present embodiment, the narrow ground leg portion 38 of the shield member 30 does not excessively approach the connection portion 24 of the terminal 20 in the terminal arrangement direction. In other words, it is not necessary to make both of the connection portions of the two terminals, which are excessively close to the ground leg portion, on both sides of the ground leg portion of the shield member as a ground connection portion. Therefore, according to the present embodiment, one ground terminal corresponding to one ground leg portion can be reduced, and the receptacle connector 1 can be downsized in the terminal arrangement direction. In the present embodiment, since the narrow ground leg portions 38 of the shield member 30 are located so as to overlap with the ground terminal 20G in the terminal arrangement direction, And can be further downsized in the array direction.

In the receptacle connector 1 according to the present embodiment, the narrow ground leg portion 38 of the shield member 30 is connected to the ground connection portion 24G corresponding to the narrow ground leg portion 38 (See FIG. 3 (B)). In the terminal arrangement direction, in the region between the signal connecting portions 24S located adjacent to both sides of the ground connecting portion 24G, Without having overlapping ranges in the terminal arrangement direction (see Fig. 4). Therefore, even if the narrow ground leg portion 38 is disposed so as to be close to the ground connection portion 24G of the ground terminal 20G in the connector width direction, the signal connection portions 24S on both sides are not excessively close to each other. Therefore, in the circuit board, the ground pad PG corresponding to the ground connection portion 24G and the narrow ground leg portion 38 is connected to the signal pad PS corresponding to each of the signal connection portions 24S on both sides. A sufficient distance can be ensured in the terminal arrangement direction. As a result, there is no fear that the ground pad PG and the two signal pads corresponding to both of the ground connection portion 24G and the narrow ground leg portion 38 are connected by solder during connector mounting. Therefore, the connection portion 24 of each terminal 20 and the narrow ground leg portion 38 of the shield member 30 can be reliably connected to the respective pads, respectively.

In the present embodiment, since the ground connection portion 24G is positioned inside the receptacle side housing 10, that is, inside the outer side surface of the side wall 14 in the connector width direction, the shield member 30 The narrow ground leg portion 38 of the terminal 20 can be formed close to the connection portion 24 of the terminal 20. Therefore, even if the dimension of the receptacle connector 1 is slightly increased in the connector width direction as compared with the conventional one, since the narrow ground leg portion 38 is located outside the connection portion 24 of the terminal 20 in the connector width direction, The increase can be limited to a minimum.

Although 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 in the present embodiment, The connecting portion 24G and the narrow ground leg portion 38 may be connected to different ground pads, respectively. In this case, 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 in the circuit board are located close to each other in the connector width direction. However, even when separate ground pads corresponding to the ground connection portion 24G and the narrow ground leg portion 38 are connected to each other by solder at the time of connector mounting, they are the same grounded pad There is no problem.

In the present embodiment, the ground connection portion 24G and the narrow ground leg portion 38 are biased to one side in the terminal arrangement direction, but instead of this, for example, the ground connection portion 24G and the narrow ground The leg portions 38 may be formed so that their centers in the terminal arrangement direction coincide with each other. Even if the centers are matched as described above, both of the ground connecting portion 24G and the narrow ground leg portion 38 can be seen from the outside in the connector width direction with the naked eye. It is therefore necessary to determine whether both of the narrow ground leg portion 38 and the ground connection portion 24G are flush with the same height before mounting the receptacle connector 1 on the circuit board, Whether or not both of the leg portion 38 and the ground connection portion 24G is appropriately soldered to the ground pad PG of the circuit board can be easily confirmed visually.

In the present embodiment, the whole of the narrow ground leg portion 38 is located within the range of the width of the ground connection portion 24G in the terminal arrangement direction. Alternatively, only a part of the narrow ground leg portion 38, The narrow ground leg portion 38 and the ground connecting portion 24G may be shifted from each other such that they are located within the range of the width of the ground connection portion 24G in the arrangement direction. Even in this positional relationship, both the ground connecting portion 24G and the narrow ground leg portion 38 can be seen from the outside in the connector width direction with the naked eye. It is therefore necessary to determine whether both of the narrow ground leg portion 38 and the ground connection portion 24G are flush with the same height before mounting the receptacle connector 1 on the circuit board, Whether or not both of the leg portion 38 and the ground connection portion 24G is appropriately soldered to the ground pad PG of the circuit board can be easily confirmed visually.

In the present embodiment, the ground connecting portion 24G and the narrow ground leg portion 38 are located so as to partially overlap with each other. However, for example, when the ground connecting portion and the ground leg portion are formed to have the same size And the centers in the terminal arrangement direction may coincide with each other, that is, the entire range may overlap each other in the terminal arrangement direction. The ground leg portion may be formed to have a larger dimension in the terminal arrangement direction than the ground connection portion and the ground leg portion may be formed at a position including the entire ground connection portion in the terminal arrangement direction.

When the ground connecting portion and the ground leg portion are formed in the dimension and positional relationship as described above, when the ground leg portion is seen from the outside in the connector width direction, that is, in the direction perpendicular to the plate surface of the side plate portion of the shield member, It is not a problem if both the ground connection portion and the ground leg portion can be recognized in a direction having an angle with respect to the connector width direction. That is, before mounting the receptacle connector 1 on the circuit board, it is determined whether or not both the narrow ground leg portion 38 and the ground connection portion 24G are flush with the same height, and after mounting, Whether or not both of the ground connection portion 38 and the ground connection portion 24G are appropriately soldered to the ground pad PG of the circuit board can be visually confirmed from a direction having an angle with respect to the connector width direction.

In the present embodiment, two ground terminals 20G are provided among the terminals arranged in each column. However, the number of the ground terminals 20G is not limited to this, and may be one, or three or more. In order to enhance the ground function, it is preferable that a large number of ground terminals 20G are formed. The position and the number of the signal terminal 20S and the ground terminal 20G may be different from each other in one terminal column and the other terminal column among the two terminal columns held by the housing 10 on the receptacle side. In order to use the receptacle connector 1 for high-speed signal transmission, an arrangement in which the ground terminals 20G are located on both sides of two signal terminals 20S adjacent to each other, that is, The signal terminal 20S, the signal terminal 20S, the signal terminal 20S, the signal terminal 20S, and the signal terminal 20S are repeated.

The shape and the positional relationship of the connecting portion 24 of the terminal 20 and the narrow ground leg portion 38 of the shield member 30 in the present invention are not limited to the embodiments described with reference to Figs. For example, various modifications are possible as shown in Figs. 6 (A) and 6 (B). 6A is a cross-sectional view showing a modification of the present embodiment, and FIG. 6B is a cross-sectional view showing still another modified embodiment. In the terminal arrangement direction of the connector, As shown in Fig. 6A and 6B, the parts corresponding to those of the embodiment shown in Figs. 1 to 5 are indicated by "'" or "" "attached to the respective parts .

3 (B), the ground connection portion 24G of the ground terminal 20G is connected to the ground connection portion 24G of the receptacle-side housing 10 in the width direction of the connector in the previously described embodiment based on Figs. 1 to 5 And the lower end of the narrow ground leg portion 38 of the shield member 30 is curved toward the outside in the connector width direction at the same position as the bottom face of the receptacle side housing 10. [ 6A, the ground connection portion 24G 'of the terminal 20' is directed outwardly of the receptacle-side housing 10 'in the connector width direction, and the shield member 30 'is bent to avoid interference with the ground connection portion 24G', which is different from that of the above-described embodiment. Specifically, the lower portion of the ground leg portion 38 'is curved toward the outside in the connector width direction and then bent downward.

In the modified example of Fig. 6A, as compared with the embodiment shown in Fig. 3B, since the ground connection portion 24G 'is formed to be large in the connector width direction, the ground connection portion 24G' ) And the ground pad (PG) can be ensured to be large, and solder connection can be more reliably performed.

In the modification of Fig. 6 (B), since the lower portion of the ground leg portion 38 "of the shield member 30" is not bent, (See Fig. 3 (B)). In the modified example of Fig. 6B, since the lower portion of the ground leg portion 38 "does not extend outward in the connector width direction, in comparison with the present embodiment, The dimension in the width direction may be small. Therefore, in the circuit board, the dimension in the connector width direction of the ground pad to which the ground connection portion 24G " of the ground terminal 20G "and the ground leg portion 38" of the shield member 30 & can do. As a result, since the space available for mounting other electronic devices or the like on the mounting surface of the circuit board increases, the degree of freedom in designing the circuit increases.

1: receptacle connector
10: Housing of the receptacle
11: bottom wall
14: side wall
20: terminal
20S: Signal terminal
20G: ground terminal
24S: Signal connection
24G: Ground connection
30: shield member
32: side plate portion
38: narrow ground leg part (ground leg part)
PS: Signal pad
PG: Ground pad

Claims (5)

An electrical connector for a circuit board, which is disposed on a circuit board,
A plurality of terminals arranged and held in the housing in the longitudinal direction in a terminal arrangement direction and a shield member attached to the housing, Respectively,
Wherein the housing includes a bottom wall extending in the terminal arrangement direction so as to face the mounting surface of the circuit board and rising portions extending from both side portions of the bottom wall in a connector width direction perpendicular to the terminal arrangement direction, Lt; RTI ID = 0.0 &gt;
Wherein the plurality of terminals include a signal terminal and a ground terminal, wherein the signal terminal and the ground terminal are mixed and arranged and held on the side wall, and the signal terminal is connected to the signal pad of the circuit board Wherein the ground terminal has a ground connection portion exposed from the bottom wall to be connected to the ground pad of the circuit board,
Wherein the shield member includes a side plate portion extending from the terminal lateral direction along the outer side surface of the side wall at a position outside the terminal in the connector width direction and a side plate portion corresponding to the ground connection portion of the ground terminal in the terminal array direction And a ground leg portion extending from the side plate portion toward the circuit board at the position,
Wherein the signal connection portion of the signal terminal and the ground connection portion of the ground terminal are located inside the outer side surface of the side plate portion of the shield member in the connector width direction and the ground connection portion of the ground terminal The signal connection portions of the signal terminals are located between the signal connection portions,
The ground leg portion of the shield member is connected to the pad for the ground of the circuit board at a position outside the outermost end of the signal connecting portion and the ground connecting portion in the connector width direction, And the ground connecting portion is located within the region between the signal connecting portions located on both sides of the ground connecting portion so as to overlap with the ground connecting portion in the terminal arranging direction. The method 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 have a range partially overlapping in the terminal arrangement direction. 3. The method 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 pad commonly used as each of the ground pads. An electrical connector mounting structure characterized in that the electrical connector for a circuit board according to claim 1 or 2 is mounted on a circuit board. An electrical connector mounting structure characterized in that the electrical connector for a circuit board according to claim 3 is mounted on a circuit board.

Images