JP7266513B2 - receptacle connector - Google Patents

Description

The present invention relates to a receptacle connector in a board-to-board connector that electrically connects the two boards by fitting a receptacle connector mounted on one board and a plug connector mounted on the other board.

As a trend in recent years, along with the miniaturization of electric/electronic devices and communication devices (for example, smartphones and smartwatches), connectors are also becoming smaller and thinner. At the same time, it is required to improve the holding force (fitting force) at the time of fitting the connector while maintaining the miniaturization and low profile. Patent Documents 1 and 2 below were filed by the present applicant prior to the filing of the present application. Both of the connectors described in Patent Documents 1 and 2 are configured such that a part having a power supply structure (power supply structure part) is integrated with a fixture for fixing the connector to the board.

JP 2018-175189 A JP 2018-118613 A

When the holding force (fitting force) at the time of mating is to be improved in order to stably mate the connectors, if the power supply structure is integrally formed with the fixture as in the technique described above, the size of the fixture is reduced. There was a limit to the widening of the power supply structure part due to the constraints. In other words, there is a problem that if the power supply structure is integrated with the fixture, the holding force (fitting force) cannot be improved.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a board-to-board connector that is easy to improve holding power (fitting power) while maintaining miniaturization and low profile even if it has fixtures for fixing the connector to the board. To provide a receptacle connector.

(1) The present invention provides a receptacle in a board-to-board connector that electrically connects the two boards by fitting a receptacle connector mounted on one board and a plug connector mounted on the other board. A connector comprising: a housing having a recess opening on the opposite side of a board mounting surface to receive the plug connector; a required number of contacts arranged and held in the housing; fixtures arranged at both ends, wherein the concave portion of the housing has two side walls facing each other and extending in the array pitch direction; and a board mounting surface connecting the two side walls. and two connecting walls located at both ends in the arrangement pitch direction. The contacts have signal contacts and power contacts, and the signal contacts A first contact portion formed in the vicinity of a free end and brought into contact with the plug connector, a connecting portion formed on the other free end side and mounted on the substrate, and a recess extending from the first contact portion. and a second contact portion continuously provided in a concave shape along the concave portion of the housing, and an elastic portion formed between the second contact portion and the connecting portion and curved at least once or more. wherein the connection portion of the signal contact is arranged on either one of the two side walls of the housing, and the power contact is separate from the fixture and has a power supply structure. Further, the receptacle connector is characterized by being wider than the signal contact and having substantially the same structure except for the width.

(2) The connecting portion of the power contact may be arranged on the side wall opposite to the side wall on which the connecting portion of the signal contact is arranged.

(3) The width of the power contact may be 1.9 to 2.1 times the width of the signal contact.

(4) The fixture may be insert-molded in the housing.

ADVANTAGE OF THE INVENTION According to the present invention, a board-to-board connector that easily improves the holding force (fitting force) while maintaining the miniaturization and low profile even if it has a fixture for fixing the connector to the board. A receptacle connector can be provided.

1 is a perspective view showing a plug connector, which is a mating connector of a receptacle connector according to one embodiment of the present invention; FIG. 1 is a perspective view showing a receptacle connector according to one embodiment of the invention; FIG. FIG. 1B is a perspective view of the plug connector viewed from a direction different from that of FIG. 1A; FIG. 1C is a perspective view of the receptacle connector as seen from a direction different from that of FIG. 1B; FIG. 4 is a perspective view of the board-to-board connector in which the receptacle connector and the plug connector are mated; Fig. 2 is a plan view of the receptacle connector; It is a bottom view of a receptacle connector. FIG. 4B is a cross-sectional view taken along line AA in FIG. 4A; FIG. 4B is a cross-sectional view taken along the line BB in FIG. 4A; 4B is a cross-sectional view taken along line CC in FIG. 4A; FIG. FIG. 4B is a cross-sectional view taken along line DD in FIG. 4A; It is a perspective view of a signal contact. It is a perspective view of a signal contact. It is a perspective view of a contact for power supply. It is a perspective view of a contact for power supply. Fig. 2 is a perspective view of the housing of the receptacle connector; 8B is a perspective view of the housing of the receptacle connector as seen from a direction different from that of FIG. 8A; FIG. FIG. 4 is a plan view of the housing of the receptacle connector; FIG. 10 is a cross-sectional view taken along the line AA in FIG. 9; FIG. 10 is a cross-sectional view taken along the line BB in FIG. 9; FIG. 10 is a sectional view taken along line CC in FIG. 9; FIG. 10 is a cross-sectional view taken along line DD in FIG. 9; FIG. 4 is a perspective view of a fixture for the receptacle connector; FIG. 4 is a perspective view of a fixture for the receptacle connector; 4 is a plan view of the board-to-board connector shown in FIG. 3; FIG. 13 is a cross-sectional view taken along the line AA in FIG. 12; FIG. FIG. 13 is a cross-sectional view taken along the line BB in FIG. 12; 13 is a cross-sectional view taken along the line CC in FIG. 12; FIG. FIG. 13 is a cross-sectional view taken along line DD in FIG. 12;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a receptacle connector of the present invention will be described in detail based on the drawings. The receptacle connector of the embodiment constitutes a board-to-board connector in cooperation with a plug connector as a mating connector. A board-to-board connector is an electrical connector that connects a receptacle connector mounted on one board and a plug connector mounted on the other board by fitting the two boards together. The substrate is not particularly limited in its type and form as long as it can mount a receptacle connector or plug connector. In the following description, the bottom surface or bottom surface of the receptacle connector and plug connector refers to the surface mounted on the substrate, respectively, and the top surface refers to the surface opposite to the bottom surface or bottom surface. Moreover, the mounting method is not limited to the surface mounting method, in which soldering is performed on the surface of the substrate.

For convenience of explanation, the XYZ coordinate system is defined as follows. The XY plane is a plane substantially parallel to the substrate mounting surface. The Y direction is the arrangement pitch direction (parallel direction) of the required number of contacts, and is also referred to as the horizontal direction (width direction). The X direction is a direction perpendicular to the Y direction. The X1 direction is the connection portion 221 side of the signal contact 220S. The X2 direction is the connection portion 221 side of the power contact 220P. The Y1 direction is the left side when the X1 direction is directed downward and the X2 direction is directed upward. The Y2 direction is also to the right. The Z direction is a direction orthogonal to the XY plane and is also called the height direction. With the receptacle connector 20 as a reference, the Z1 side is the board mounting surface side, and the Z2 side is the side away from the board mounting surface. Note that this XYZ coordinate system is used for convenience in describing the embodiments, and is not to be interpreted strictly unless it deviates from the gist of the present invention.

1A to 2B show a receptacle connector 20 or plug connector 30 that constitutes the board-to-board connector 10. FIG. FIG. 3 shows the mating state of the receptacle connector 20 and the plug connector 30. As shown in FIG. The receptacle connector 20 and the plug connector 30 are detachable from each other by moving them toward or away from each other in the Z direction. 1A and the plug connector 30 shown in FIG. 1B can be fitted together. Similarly, when the receptacle connector 20 shown in FIG. 2A and the plug connector 30 shown in FIG. 2B are brought closer together, they can be mated.

Before describing the receptacle connector 20 of one embodiment of the present invention, the plug connector 30 as a mating connector will be described.
As shown in FIGS. 1A, 2A, and 3, the plug connector 30 has a substantially rectangular parallelepiped shape, a plug block 300 mainly made of an electrically insulating synthetic resin, and a required number of and plug fixtures 330 provided at both ends of the plug block 300 in the longitudinal direction (Y direction).

Examples of materials for the plug block 300 include, but are not limited to, liquid crystal polymer (LCP), polyphenylene sulfide (PPS), polybutylene terephthalate (PBT), and polyamide (PA). The material of the plug block 300 may contain inorganic fillers, reinforcing fibers, and the like. Plug block 300 has a shape that fits into recess 203 (described below) of housing 200 .

The plug contacts 320 include narrow signal plug contacts 320S and wide power plug contacts 320P. However, all plug contacts 320 may be signal plug contacts 320S. When both the signal plug contact 320S and the power plug contact 320P are provided, they may have the same shape and size. Plug contact 320 is made of a conductive metal, such as copper or a copper alloy.

As shown in FIGS. 12 and 13, each plug contact 320 has two connecting portions 321 mounted on the substrate, and the first contact 220 standing up from each of the two connecting portions 321 in the height direction of the plug block 300 . It has two contact portions 325 that respectively contact the contact portion 225 or the second contact portion 224 and a connecting portion 326 that connects the two contact portions 325 . The plug contact 320 only needs to be in contact with the contact 220 of the receptacle connector 20, and its structure is not limited to the illustrated example.

The plug contact 320 and the plug fixture 330 are fixed to the plug block 300 by integral molding.
The plug contact 320 and the plug fixture 330 are formed with recesses into which the connecting portions 221 of the signal contacts 220S or the connecting portions 221 of the power contacts 220P of the mating receptacle connector 20 are inserted. The recess is appropriately designed so that the connecting portion 221 of the signal contact 220S or the connecting portion 221 of the power contact 220P is inserted. The connecting portion of the plug contact 320 and the connecting portion of the plug fixture 330 are of the surface mount type.

Plug fixture 330 is integrated during injection molding of plug block 300 . That is, the plug fixture 330 is held (set) as an insert in a mold (not shown), and the synthetic resin material of the plug block 300 is injected (filled) into the space forming the wall thickness of the plug block 300 to fix the plug. The tool 330 is fixed (held) to the plug block 300 . Alternatively, the plug fixture 330 may be inserted (press-fitted) and/or adhered to the plug block 300 after the plug block 300 is formed.

Next, the receptacle connector 20 will be explained. As shown in FIGS. 1B and 2B-13, the receptacle connector 20 mainly comprises a housing 200, a required number of contacts 220, and fixtures 230. As shown in FIG.

The housing 200 is manufactured by injection molding or the like using an electrically insulating synthetic resin as a material. The synthetic resin material is appropriately selected in consideration of dimensional stability, workability, cost, etc. Examples include liquid crystal polymer (LCP), polyphenylene sulfide (PPS), polybutylene terephthalate (PBT), polyamide (PA), polycarbonate ( PC) and synthetic materials thereof, but are not limited to these. The material of the housing 200 may contain inorganic fillers, reinforcing fibers, and the like.

The housing 200 has a flat, substantially rectangular parallelepiped outer shape. The housing 200 is formed with a recess 203 that is sized to accommodate the plug connector 30 . Specifically, the housing 200 has a bottom wall 201 and a peripheral wall 202 rising from the peripheral edge of the bottom wall 201 . Bottom wall 201 and peripheral wall 202 define recess 203 . The recess 203 opens on the opposite side of the board mounting surface (in the Z2 direction) and receives the plug connector 30 . The size of the concave portion 203 may be designed as long as the plug connector 30 can be accommodated therein, and is appropriately designed in consideration of connectability, workability, and the like. The concave portion 203 has two side walls 202a, 202a that extend in the arrangement pitch direction Y and face each other, and a bottom wall 201 that connects the two side walls 202a and is positioned on the substrate mounting surface side (on the Z1 side) and the arrangement pitch direction. It is composed of two connecting walls (end walls) 202b, 202b located at both ends of Y.

The peripheral wall 202 has side walls 202a extending along the parallel direction Y of the contacts 220 and facing each other, and connecting walls 202b extending along the horizontal direction X and facing each other. As shown in FIGS. 10A and 10B, the inner surface of the side wall 202a has a substantially T-shaped accommodation groove in a plan view that accommodates a portion near the first contact portion 225 or a portion near the second contact portion 224 of each contact 220. 204 are formed. The accommodation groove 204 penetrates the housing 200 in the height direction (thickness direction) Z. As shown in FIG. When the contact 220 is assembled by insertion into the receiving groove 204, the receiving groove 204 is preferably sized to press against the contact. Alternatively, contacts 220 can be integrated during injection molding of housing 200 . That is, each contact 220 is held (set) in a mold (not shown) as an insert body, and an electrically insulating synthetic resin material forming the housing 200 is injected (filled) into a space forming the thickness of the housing 200. , the contact 220 may be fixed (held) to the housing 200 . The holding manner may be any manner as long as the contact 220 can be held, and may be hooking, welding, welding, or integral molding. The holding mode is appropriately designed in consideration of connection stability, holding strength, workability, and the like.

A required number of contacts 220 are arranged and held in the housing 200 . The arrangement direction of the contacts 220 is also called an arrangement pitch direction Y and a parallel direction Y. FIG. The contact 220 is made of a conductive metal, preferably made of copper or a copper alloy (brass, beryllium copper, phosphor bronze, Corson copper alloy, etc.) from the viewpoint of springiness, and is manufactured by press working of a known technique. The contacts 220 include narrow signal contacts 220S shown in FIGS. 6A and 6B and wide power contacts 220P shown in FIGS. 7A and 7B.

As shown in FIGS. 4A to 7B, each contact 220 (220S, 220P) is convexly curved inward in the X direction (toward the first contact portion 225) with the connection portion 221 mounted on the substrate. a second contact portion 224, a first contact portion 225 that faces the second contact portion 224 and curves convexly toward the inside in the X direction (toward the second contact portion 224); It has a connecting portion 226 that connects the second contact portion 224 and the first contact portion 225, and an elastic portion 223 that is provided between the second contact portion 224 and the connecting portion 221 and bends at least once or more. More specifically, the signal contact 220S includes a first contact portion 225 formed near one free end that contacts the plug connector 30, and a connection portion 221 that is formed on the other free end and mounted on the substrate. a second contact portion 224 extending from the first contact portion 225 and connected to the recess 207 having a shape along the recess 203 of the housing 200; the second contact portion 224; and an elastic portion 223 that bends at least one time or more formed between. The contact 220 only needs to be in contact with the plug contact 320 of the plug connector 30, and its structure is not limited to the illustrated example.

The first contact portion 225 has a curved shape so as to facilitate contact with the plug contact 320 of the plug connector 30, and is chamfered on both sides in the width direction. In this embodiment, the connection part 221 is of surface mount type (SMT). The mounting mode is not limited as long as it can be mounted on the board, and may be an L-type dip type or a press fit. The mounting mode is appropriately designed in consideration of the specifications of the substrate, the mounting density of the substrate, and the like.

The contact 220 is formed with a recess 227 having a shape along the recess 203 of the housing 200 extending from the first contact portion 225 . The recess 227 is a portion into which the plug connector 30 having a substantially rectangular parallelepiped shape is inserted, similar to the recess 203 of the housing 200 . The size of the recess 227 is not limited as long as the plug connector 30 can be inserted (if it can be fitted). The recess 227 is appropriately designed so that the plug connector 30 can be inserted in consideration of connection stability, holding force, and workability.

The second contact portion 224 is connected to the recess 227 . By providing the second contact portion 224, the plug connector 30 can be sandwiched between the first contact portion 225 and the second contact portion 224, thereby obtaining a stable connection. The first contact portion 225 and the second contact portion 224 enter said recesses of the plug contacts 320 of the plug connector 30 . Similarly to the first contact portion 225, the second contact portion 224 has a curved shape so as to facilitate contact with the plug contacts 320 of the plug connector 30, and both sides in the width direction are chamfered.

The elastic portion 223 is provided between the second contact portion 224 and the connection portion 221 and has a shape that is curved at least once. By providing the elastic portion 223, a stable connection can be obtained.

The connection portion 221 of the signal contact 220S is arranged on either side of the two side walls 202a, 202a of the housing 200. As shown in FIG. In this embodiment, as shown in FIGS. 2B and 4B, the connecting portion 221 of the signal contact 220S is arranged only on the X1 side.

The power contact 220P is separate from the fixture 230, has a power structure, is wider than the signal contact 220S, and has substantially the same structure except for the width. "Substantially the same structure except for the width" is interpreted broadly and broadly includes the case where the structure can be regarded as the same except for the width. For example, the power contacts 220P and the signal contacts 220S have the same shape when viewed in the arrangement pitch direction Y. FIG.

The width of the power contact 220P is wider than the width of the signal contact 220S, for example, by about 0.05 to 0.15 mm. The width of the power contact 220P is, for example, 1.9 to 2.1 times the width of the signal contact 220S.

The connecting portion 221 of the power contact 220P is arranged on the other side of the two side walls 202a, 202a of the housing 200. As shown in FIG. In this embodiment, as shown in FIGS. 2B and 4B, the connecting portion 221 of the power contact 220P is arranged only on the X2 side. That is, the connecting portion 221 of the power contact 220P is arranged on the side wall 202a (side wall 202a on the X2 side) opposite to the side wall 202a (side wall 202a on the X1 side) on which the connecting portion 221 of the signal contact 220S is arranged. be.

In the case of the power contact 220P, the thickness of the gold plating may be required to be 0.5 μm or more. has substantially the same structure as the signal contact 220S, except for the width, to meet the demand for securing the gold plating thickness.

Next, the fixture will be explained. The fixtures 230 are arranged at both ends of the housing 200 in the arrangement pitch direction Y, respectively. The fixture 230 is made of a conductive metal, preferably made of copper or a copper alloy (brass, beryllium copper, phosphor bronze, Corson copper alloy, etc.) from the viewpoint of springiness, and is manufactured by press working of a known technique. The fixture 230 partially covers both ends of the housing 200 in the longitudinal direction Y, as shown in FIGS. 1B, 2B, and the like. Both ends of the housing 200 in the longitudinal direction Y are thereby reinforced. The fixture 230 also functions as a fixture (fixing tab) that secures the housing 200 to the substrate.

The fixture 230 is shown alone in FIGS. 11A and 11B. The fixture 230 has a substantially U shape when viewed from the opposite side of the substrate (when viewed in the Z1 direction). When fixed to the housing 200, two connection portions 235 projecting toward the substrate (in the Z1 direction) are formed on both sides in the horizontal direction X (short direction). In this embodiment, it is a surface mount type (SMT). The connection part 235 is not limited as long as it can be mounted, and may be of a dip type or a press fit.

Fixture 230 is integrated with housing 200 during injection molding of housing 200 . That is, the fixture 230 is insert-molded in the housing 200 . Specifically, the fixture 230 is held (set) as an insert body in a mold (not shown), and the synthetic resin material of the housing 200 is injected (filled) into the space forming the thickness of the housing 200 . are fixed (held) to the housing 200 . Alternatively, fixture 230 may be inserted (press-fit) and/or adhesively secured to housing 200 after housing 200 is formed.

The fixture 230 is further detailed. The fixture 230 mainly includes a top wall 231, a pair of hanging side walls 232 facing in the lateral direction X of the housing 200, a hanging end wall 233, and a hanging piece 234, and is stamped from a metal plate material. It is formed by bending an intermediate piece cut into a predetermined shape and size. The connecting portion 235 is formed from a portion of the lower end of the hanging sidewall 232 .

The top wall 231 extends along the upper surface of the side wall 202a of the peripheral wall 202 and the upper surface of the connecting wall 202b (the surface opposite to the board mounting surface) at the end of the housing 200 in the longitudinal direction Y. It has a shape.

The hanging side wall 232 hangs down from the outer side edge of the top wall 231 along the outer surface of the side wall 202a of the peripheral wall 202, and is mounted and fixed to the substrate at the connecting portion 235 at the lower end thereof. The hanging end wall 233 hangs down from the outer edge of the top wall 231 in the X direction along the outer surface of the connecting wall 202b of the peripheral wall 202 . Depending sidewalls 232 and depending end walls 233 are flush with the outer surface of peripheral wall 202 .

The hanging piece 234 hangs down from the inner edge of the top wall 231 in the X direction along the inner surface of the connecting wall 202b of the peripheral wall 202 and sandwiches the connecting wall 202b with the hanging end wall 233 . The hanging piece 234 is flush with the inner surface of the peripheral wall 202 .

When fixed to the housing 200, the hanging end wall 233 and the hanging piece 234 can increase the fixing strength when held by the housing 200 by integral molding.

Next, the fitting state will be described. As shown in FIGS. 3 and 12 to 13D, the mated state is formed by the plug connector 30 entering the recess 203 of the housing 200 of the receptacle connector 20 . In the mated state, the plug contacts 320 are in contact with the contacts 220 of the receptacle connector 20, and the plug fixtures 330 of the plug connector 30 are connected to the first contact portions 225 and the second contact portions 224 of the power contacts 220P of the receptacle connector 20. contact in places.

[Effects of Embodiment]
(1) In the receptacle connector 20 of the embodiment, the concave portion 203 of the housing 200 has two side walls 202a, 202a extending in the arrangement pitch direction Y and facing each other, and a substrate mounting structure that connects the two side walls 202a, 202a. The contacts 220 are composed of a bottom wall 201 located on the surface side (Z1 side) and two connecting walls 202b, 202b located at both ends in the arrangement pitch direction Y, and the contacts 220 are signal contacts 220S and power contacts 220P. The signal contact 220S includes a first contact portion 225 formed in the vicinity of one free end side and in contact with the plug connector 30, and a connection portion 221 formed on the other free end side and mounted on the board. a second contact portion 224 extending from the first contact portion 225 and connected to the recess 227 having a shape along the recess 203 of the housing 200; The connection portion 221 of the signal contact 220S is arranged on either one of the two side walls 202a, 202a of the housing 200 and is formed between the two side walls 202a, 202a of the housing 200, and the connection portion 221 of the signal contact 220S. The contact 220P is separate from the fixture 230, has a power supply structure, is wider than the signal contact 220S, and has substantially the same structure except for the width.

Therefore, according to the receptacle connector 20 of the embodiment, the fixture 230 and the power contact 220P having the power supply structure are separate bodies. The power contact 220P is wider than the signal contact 220S and has substantially the same structure except for the width. Therefore, the width of the power contact 220P can be increased without being restricted by the size of the fixture 230. FIG. As a result, even with the fixture 230 for fixing the connector to the board, it is easy to improve the holding force (fitting force) while maintaining the miniaturization and low profile.

(2) In the receptacle connector 20 of the embodiment, the connecting portion 221 of the power contact 220P is arranged on the side wall 202a opposite to the side wall 202a on which the connecting portion 221 of the signal contact 220S is arranged. Therefore, the signal contacts 220S and the power contacts 220P are separately arranged on one side and the other side wall 202a. Therefore, it is easy to more evenly balance the mounting strength of the contacts.

(3) In the receptacle connector 20 of the embodiment, the width of the power contact 220P is 1.9 to 2.1 times the width of the signal contact 220S. Therefore, sufficient high conductivity can be secured as the power contact 220P. Further, it is possible to prevent the size of the entire receptacle connector 20 in the arrangement pitch direction Y from increasing due to the excessively wide width of the power supply contacts 220P.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be modified as appropriate. The connection portion 221 of the power contact 220P and the connection portion 221 of the signal contact 220S may be arranged on the same side wall 202a.

REFERENCE SIGNS LIST 10 board-to-board connector 20 receptacle connector 200 housing 201 bottom wall 202 peripheral wall 202a side wall 202b connecting wall 203 concave portion 204 accommodation groove 220 contact 220P power contact 220S signal contact 221 connecting portion 223 elastic portion 224 second contact portion 225 first contact Part 226 Connecting part 227 Recess 230 Fixing part 231 Top wall 232 Hanging side wall 233 Hanging end wall 234 Hanging piece 235 Connection part 30 Plug connector 300 Plug block 320 Flag contact 320P Plug contact for power supply 320S Plug contact for signal 321 Connection part 325 Contact part 326 connecting portion 330 fixture

Claims (4)

A receptacle connector in a board-to-board connector that electrically connects the two boards by fitting a receptacle connector mounted on one board and a plug connector mounted on the other board,
a housing having a recess opening on the opposite side of the board mounting surface and receiving the plug connector;
a required number of contacts arranged and held in the housing;
A receptacle connector comprising fixtures arranged at both ends of the housing in the arrangement pitch direction,
The recess of the housing includes two side walls extending in the pitch direction and facing each other, a bottom wall connecting the two side walls and positioned on the board mounting surface side, and two sides positioned at both ends in the pitch direction. consists of one connecting wall and
The contact has a signal contact and a power contact,
The signal contact includes a first contact portion formed in the vicinity of one free end and brought into contact with the plug connector, a connection portion formed on the other free end and mounted on the substrate, and the first contact portion. a second contact portion that extends from the contact portion and is connected to the recess having a shape along the recess of the housing; and at least one contact portion formed between the second contact portion and the connection portion. and an elastic portion that curves more than once,
the connecting portion of the signal contact is arranged on one side of the two side walls of the housing;
The power contact is separate from the fixture, has a power supply structure, is wider than the signal contact, and has substantially the same structure except for the width. receptacle connector. 2. The receptacle connector according to claim 1, wherein the connection portion of the power contact is arranged on the side wall opposite to the side wall on which the connection portion of the signal contact is arranged. 3. The receptacle connector according to claim 1, wherein the width of the power contact is 1.9 to 2.1 times the width of the signal contact. 4. The receptacle connector according to claim 1, wherein said fixture is insert-molded in said housing.

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