Patent Application
20250239821
The present invention relates to a connector, a connector set and a connector-equipped cable, and in particular to a technique suitable for an intra-apparatus wiring of a communication device.
In recent years, as next-generation mobile communication-enabled apparatuses such as 5G-enabled smartphones have been practically used, connectors used for intra-apparatus wiring have been improved. For example, PTL 1 discloses as a board-to-wire connector suitable for a case where the distance between a main board of a communication device and an antenna module board is long, a connector that can collectively electrically connect, to the antenna module board, a coaxial cable for high-speed (high-frequency) signal transmission and other electric wires such as a discrete cable.
In addition, M.2 compliant expansion cards such as wireless module boards support
a plurality of RF terminals for high-speed signal transmission to achieve speedup and stabilization of radio communication, and can simultaneously transmit the data by using a plurality of antennas.
PTL 1
WO2021/024941
Incidentally, it is necessary to reinforce the ground structure of the connector in order to enhance the high-speed transmission. In addition, it is necessary to ensure the isolation between the high-speed signal transmission paths, and between the high-speed signal transmission path and other signal transmission paths. In general, a ground member connected to the ground, which is the reference potential, is disposed between adjacent transmission paths for the purpose of shielding between the transmission paths. However, the structure of known ground members is flat, and as such the shielding performance is insufficient.
In addition, in the related art, when connecting a plurality of coaxial cables to an expansion card, the connector is individually mounted at the tip end of the coaxial cable, and connected one by one to the RF terminal of the expansion card. As such, the operation of connecting the coaxial cable is complicated, and it is difficult to reduce the mounting space of the RF connector at the expansion card.
An object of the present invention is to provide a connector, a connector set and a connector-equipped cable that can meet the requirement of an intra-apparatus wiring of a communication device, and in particular can achieve improvement in high-speed transmission characteristics, improvement in connectivity of a coaxial cable and size reduction of a circuit board (e.g., an M.2 compliant expansion card) as the connection target.
An electric wire-to-board connector according to the present invention is configured to connect a circuit board and a plurality of coaxial cables used for transmission of a high-frequency signal when joined to a mating connector mounted on the circuit board, the connector including: a plurality of first contacts connected to respective inner conductors of the plurality of coaxial cables; and a second contact connected to a ground that is a reference potential. The second contact includes a shielding part disposed between the plurality of first contacts. The shielding part includes two interconnection shielding plates provided orthogonal to an opposing direction of signal line connection parts of the first contacts adjacent to each other between the signal line connection parts.
A connector set according to the present invention includes: a plug connector including the above-described connector; and a receptacle connector including the mating connector.
A connector-equipped cable according to the present invention includes: the above-described connector; and the coaxial cable connected to the connector.
With the connector, the connector set and the connector-equipped cable according to the present invention, it is possible to meet the requirement of an intra-apparatus wiring of a communication device, and in particular can achieve improvement in high-speed transmission characteristics, improvement in connectivity of a coaxial cable and size reduction of a circuit board as the connection target.
Embodiments of the present invention are elaborated below with reference to the accompanying drawings.
By applying connector set 1, the plurality of (in the present embodiment, two) coaxial cables 10 can be collectively connected to expansion card B11, and thus the connectivity is improved. In addition, the area between the RF terminals (first receptacle contact 121) of expansion card B11 can be reduced in comparison with the related art, and size reduction of the mounting space of receptacle connector 120 can be achieved, and in turn, size reduction of expansion card B11 can be achieved.
The other end of coaxial cable 10 is connected to antenna module board B2, for example. In
Note that connector set 1 may be applied for the connection of relaying FPC board B21 and coaxial with cable 10.
2B, the illustration of expansion card B11 where receptacle connector 120 is mounted is omitted.
The present embodiment is described by using an orthogonal coordinate system (X,
Y, Z). The common orthogonal coordinate system (X, Y, Z) is used also in the drawings described later. The X direction is the short direction of connector set 1, the Y direction is the longitudinal direction (pitch direction) of connector set 1, and the Z direction is the joining direction of connector set 1.
As illustrated in
Coaxial cable 10 includes inner conductor 11, and outer shield layer 12 disposed on the outside of inner conductor 11 through an insulator (whose reference numeral is omitted) (see
Connector set 1 electrically connects coaxial cable 10 and expansion card B11 by joining plug connector 100 and receptacle connector 120. More specifically, inner conductor 11 of coaxial cable 10 is electrically connected to signal pattern P1 of expansion card B11 through first plug contact 101 of plug connector 100 and first receptacle contact 121 of receptacle connector 120 (see
The following describes detailed configurations of plug connector 100 and receptacle connector 120.
connector 100. Cover shell 104 is omitted in
As illustrated in
First plug contact 101 and second plug contact 102 are formed of a conductive material such as metal (e.g., copper alloy). Plug insulator 103 is formed of an insulating material such as a synthetic resin (e.g., liquid crystal polymer).
Two first plug contacts 101 have the same configuration, and each of which includes signal line contact point part 101a, signal line connection part 101b and signal line relaying part 101c.
When plug connector 100 and receptacle connector 120 are joined, signal line contact point part 101a is brought into contact with and electrically connected to signal line contact point part 121a of receptacle connector 120 (see
To signal line connection part 101b, inner conductor 11 of coaxial cable 10 exposed by step-stripping at the tip end portion is connected by a mechanical bonding method such as soldering, welding and pressure bonding, for example.
Signal line relaying part 101c is a part that connects signal line contact point part 101a and signal line connection part 101b.
Two first plug contacts 101 are each extended in the X direction, and are disposed side by side in the Y direction, which is the pitch direction. In the present embodiment, signal line connection part 101b and signal line relaying part 101c have flat plate shapes extended in the XY plane, while signal line contact point part 101a has a U-shape as viewed in the Y direction.
Second plug contact 102 is a ground member connected to the ground, which is the reference potential, and is electrically connected to ground pattern P2 of expansion card B11 through second receptacle contact 122 and receptacle shell 124 of receptacle connector 120. Second plug contact 102 is formed by sheet metal working (punching and bending) of a single metal plate, for example. Note that second plug contact 102 may be composed of a plurality of members as long as they are electrically connected to each other.
Second plug contact 102 includes ground contact point part 102a, shield connection part 102b, and ground relaying part 102c. Shield connection part 102b extends in the Y direction, and ground relaying part 102c (first relaying base part 102d) is connected to the center portion of shield connection part 102b in the Y direction and extended in the X direction. That is, second plug contact 102 has a T-shape as viewed from the Z direction.
Second plug contact 102 is disposed such that ground contact point part 102a and ground relaying part 102c are located between two first plug contacts 101. That is, two first plug contacts 101 are line-symmetrically disposed with respect to second plug contact 102. Ground contact point part 102a is disposed between signal line contact point part
101
a of first plug contact 101 so as to shield the part between signal line contact point parts 101a. As with signal line contact point part 101a of first plug contact 101, ground contact point part 102a has a U-shape as viewed in the Y direction. When plug connector 100 and receptacle connector 120 are joined, ground contact point part 102a is brought into contact with and electrically connected to second receptacle contact 122 of receptacle connector 120 (see
Together with ground bar 105, shield connection part 102b is electrically connected to outer shield layer 12 of coaxial cable 10. Shield connection part 102b and ground bar 105 collectively sandwich in the Z direction outer shield layers 12 of two coaxial cables 10 exposed by step-stripping at the tip end portion, and are connected by a mechanical bonding method such as soldering, welding and pressure bonding, for example.
Ground relaying part 102c is a part that connects ground contact point part 102a and shield connection part 102b. More specifically, ground relaying part 102c includes first relaying base part 102d, second relaying base part 102e, shielding part 102f and shell connecting part 102g. In addition, shielding part 102f includes interconnection shielding plates 21A and 21B and intermediate shielding plates 22A and 22B.
First relaying base part 102d and second relaying base part 102e have flat plate shapes extended in the XY plane. First relaying base part 102d is disposed on the-side in the X direction than second relaying base part 102e. In the present embodiment, shell connecting part 102g is provided between first relaying base part 102d and second relaying base part 102e. Note that shell connecting part 102g may be omitted, and in that case, first relaying base part 102d and second relaying base part 102e extend in the X direction as one piece.
Interconnection shielding plates 21A and 21B have flat plate shapes extended in the XZ plane provided to extend downward to the-side in the Z direction from both ends in the
Y direction at first relaying base part 102d. Interconnection shielding plates 21A and 21B are located between signal line connection parts 101b of two first plug contacts 101 adjacent to each other in the Y direction, and are orthogonal to the opposing direction of two signal line connection parts 101b. In addition, the distances from interconnection shielding plates 21A and 21B to the proximate first plug contact 101 (signal line connection part 101b) are the same. That is, two signal line connection parts 101b are line-symmetrically disposed with respect to interconnection shielding plates 21A and 21B.
Intermediate shielding plates 22A and 22B have flat plate shapes extended in the
XZ plane provided to extend downward to the-side in the Z direction from both ends of second relaying base part 102e in the Y direction at second relaying base part 102e.
Intermediate shielding plates 22A and 22B are located between signal line relaying parts 101c of two first plug contacts 101 adjacent to each other in the Y direction, and are orthogonal to the opposing direction of two signal line relaying parts 101c.
In addition, the distances from intermediate shielding plates 22A and 22B to the proximate first plug contact 101 (signal line relaying part 101c) are the same. That is, two signal line relaying parts 101c are line-symmetrically disposed with respect to intermediate shielding plates 22A and 22B.
In addition, the lengths of intermediate shielding plates 22A and 22B in the Z direction are smaller than interconnection shielding plates 21A and 21B so as not to interfere with receptacle shell 124 when plug connector 100 and receptacle connector 120 are joined. Shell connecting part 102g is provided between first relaying base part 102d and
second relaying base part 102e. Shell connecting part 102g has a U-shape as viewed in the Y direction. When plug connector 100 and receptacle connector 120 are joined, shell connecting part 102g is brought into contact with and electrically connected to the outer surface of receptacle shell 124 (see
In addition, in second plug contact 102, the top surfaces of cover connecting part
102
h, first relaying base part 102d, second relaying base part 102e and shield connection part 102b are flush with each other, and make contact with the inner surface of cover shell 104.
Plug insulator 103 forms the housing of plug connector 100. First plug contact 101 and second plug contact 102 are assembled to plug insulator 103. First plug contact 101 and second plug contact 102 are formed integrally with plug insulator 103 by insert molding, for example. First plug contact 101 and second plug contact 102 are disposed in a separated state, and electrically isolated from each other by plug insulator 103.
Signal line contact point part 101a of first plug contact 101 and ground contact point part 102a of second plug contact 102 are disposed with the surface exposed at joining protrusion 103a of plug insulator 103. Signal line connection part 101b of first plug contact 101 and shield connection part 102b of second plug contact 102 are exposed from the inner surface side of plug insulator 103. In addition, the top surfaces of cover connecting part 102h, first relaying base part 102d and second relaying base part 102e of second plug contact 102 are exposed from opening 103b (including the notch) provided at the top surface of plug insulator 103.
Cover shell 104 is formed of a metal conductive material, and makes contact with the portion of second plug contact 102 exposed from plug insulator 103, i.e., cover connecting part 102h, first relaying base part 102d, second relaying base part 102e and shield connection part 102b.
In addition, shell contact point part 104a protruding to the inside is provided at the
inner surface (in
Note that shell contact point part 104a may be a protrusion or a spring piece. In addition, a protrusion or a spring piece may be provided on the receptacle shell 124 side.
In addition, at the inner surface of cover shell 104, engaging protrusion 104b protruding to the inside is provided at the portion corresponding to engaging recess 124e (in
Note that as with plug insulator 103, cover shell 104 may be formed of an insulating material such as synthetic resins so as to form the housing of plug connector 100.
In plug connector 100, ground contact point part 102a set to the ground potential is
disposed between two signal line contact point parts 101a, thus shielding the part between signal line contact point parts 101a. In addition, interconnection shielding plates 21A and 21B of second plug contact 102 are disposed between two signal line connection parts 101b, thus shielding the part between signal line connection parts 101b. Further, intermediate shielding plates 22A and 22B of second plug contact 102 are disposed between two signal line relaying parts 101c, thus shielding the part between signal line relaying part 101c. In this manner, improvement in EMS characteristics (e.g., characteristic impedance, insertion loss, return loss, crosstalk and the like) of the transmission cable line can be achieved, and favorable transmission quality can be ensured.
In particular, in second plug contact 102, interconnection shielding plates 21A and 21B and intermediate shielding plates 22A and 22B are three-dimensionally formed to extend in the XZ plane, and thus the parts between signal line connection parts 101b and between signal line relaying parts 101c of first plug contact 101 are reliably shielded.
In addition, two interconnection shielding plates 21A and 21B and two intermediate shielding plates 22A and 22B are provided so as to provide an equal ground structure for first plug contact 101, and thus the transmission quality of the two signal transmission cable lines is stabilized. More specifically, since interconnection shielding plates 21A and 21B and intermediate shielding plates 22A and 22B are formed by bending at both end portions of first relaying base part 102d and second relaying base part 102e in the width direction, the distance from first plug contact 101 can be easily adjusted by setting the bending position, thus achieving easy impedance control.
viewed from the +side in the Z direction on which it is joined to plug connector 100 (hereinafter referred to as “joined side”).
As illustrated in
are formed of a conductive material such as metal (e.g., copper alloy). Receptacle insulator 123 is formed of an insulating material such as a synthetic resin (e.g., liquid crystal polymer).
First receptacle contact 121 and second receptacle contact 122 have the same shape, and are disposed side by side in the Y direction at joining recess 123a of receptacle insulator 123.
First receptacle contact 121 includes signal line contact point part 121a and signal line surface mounting part 121b. Second receptacle contact 122 includes ground contact point part 122a and ground surface mounting part 122b.
Signal line contact point part 121a and ground contact point part 122a are brought into contact with and electrically connected to signal line contact point part 101a and ground contact point part 102a of plug connector 100 when plug connector 100 and receptacle connector 120 are joined. More specifically, signal line contact point part 121a and ground contact point part 122a are each curved in a U-shape as viewed in the Y direction, and each include, at the tip end portion as a free end, a spring piece (whose reference numeral is omitted) that generates a biasing force to the opposite surface.
Signal line surface mounting part 121b and ground surface mounting part 122b are drawn from the lower portion of side wall 124c of receptacle shell 124 on the +side in the
X direction, and connected to signal pattern P1 and ground pattern P2 of expansion card B11 by soldering, for example.
Receptacle shell 124 is a frame body connected to ground pattern P2 of expansion card B11, and has a rectangular shape corresponding to the outer edge of receptacle insulator 123 in plan view as viewed from the Z direction. Receptacle shell 124 is formed by drawing a metal plate, for example. Receptacle shell 124 includes cylindrical body part 124a and flange part 124b. Flange part 124b is provided continuously and protruded outward at the end portion on the-side in the Z direction at three side walls (two side walls facing in the Y direction and one side wall located on the-side in the X direction) of body part 124a. In addition, in body part 124a, gap G for drawing first receptacle contact 121 and second receptacle contact 122 is provided at the lower portion of side wall 124c located on the +side in the X direction.
Flange part 124b is a ground connection part connected to ground pattern P2 of expansion card B11. The shape of flange part 124b corresponds to the shape of ground pattern P2. Flange part 124b is connected to ground pattern P2 of expansion card B11 by soldering, for example.
In addition, shell shielding part 124d that is connected to ground pattern P2 of expansion card B11 over second receptacle contact 122 is provided at the portion corresponding to the portion where second receptacle contact 122 is drawn in side wall 124c of receptacle shell 124. With shell shielding part 124d, side wall 124c located directly above surface mounting parts 121b and 122b of first receptacle contact 121 and second receptacle contact 122 is connected to the ground at the shortest distance.
In addition, side wall 124c makes contact with shell contact point part 104a of cover shell 104 in the region above shell shielding part 124d. Thus, the ground potential of receptacle shell 124 is equalized, and improvement in EMS characteristics of the transmission cable line can be achieved, thus ensuring favorable transmission quality.
Receptacle insulator 123 has a rectangular shape in plan view as viewed from the Z direction, and forms the housing of receptacle connector 120. At receptacle insulator 123, plug insulator 103 can be joined.
First receptacle contact 121, second receptacle contact 122 and receptacle shell 124
are assembled to receptacle insulator 123. First receptacle contact 121 and second receptacle contact 122 are formed integrally with receptacle insulator 123 by insert molding, for example. Receptacle shell 124 is engaged with the peripheral portion of receptacle insulator 123.
As illustrated in
connector 120 are joined, signal line contact point part 101a of first plug contact 101 is inserted and joined, and electrically connected to signal line contact point part 121a of first receptacle contact 121. In addition, ground contact point part 102a of second plug contact 102 is inserted and joined, and electrically connected to ground contact point part 122a of second receptacle contact 122.
Further, shell connecting part 102g of second plug contact 102 makes contact with the outer surface (the outer surface of the side wall opposite to side wall 124c) of body part 124a of receptacle shell 124. In addition, engaging protrusion 104b of cover shell 104 and engaging recess 124e of receptacle shell 124 are engaged with each other, and shell contact point part 104a of cover shell 104 makes contact with the outer surface of side wall 124c of receptacle shell 124. Receptacle connector 120 is sandwiched by second plug contact 102 and cover shell 104, and thus the joined state is stably maintained.
In this manner, connector set 1 according to the first embodiment has the following features, alone or in combination as appropriate.
Specifically, in connector set 1, plug connector 100 is an electric wire-to-board connector that connects expansion card B11 and the plurality of coaxial cables 10 used for high-frequency signal transmission when joined with receptacle connector 120 (mating connector) mounted on expansion card B11 (circuit board). Plug connector 100 includes a plurality of first plug contacts 101 (first contacts) connected to respective inner conductors 11 of the plurality of coaxial cables 10, and second plug contact 102 (second contact) connected to the ground, which is the reference potential. Further, second plug contact 102 includes shielding part 102f disposed between the plurality of first plug contacts 101, and shielding part 102f includes two interconnection shielding plates 21A and 21B provided orthogonal to the opposing direction (the Y direction) of signal line connection parts 101b between signal line connection parts 101b of adjacent first plug contact 101.
With connector set 1, improvement in EMS characteristics (e.g., characteristic
impedance, insertion loss, return loss, crosstalk and the like) of the transmission cable line can be achieved, and favorable transmission quality can be ensured. In addition, the plurality of coaxial cables 10 can be collectively connected to expansion card B11 and/or relaying FPC board B21. Thus, it is possible to meet the requirement of an intra-apparatus wiring of a communication device, and in particular achieve improvement in high-speed transmission characteristics, improvement in connectivity of coaxial cable 10, and size reduction of expansion card B11 and relaying FPC board B21 as the connection targets.
In addition, in plug connector 100, the distances from interconnection shielding plates 21A and 21B to the proximate first plug contact 101 are the same. With interconnection shielding plates 21A and 21B, an equal ground structure can be formed for first plug contact 101, and thus the transmission quality of the two signal transmission cable lines is stabilized.
In addition, in plug connector 100, shielding part 102f includes two intermediate shielding plates 22A and 22B provided orthogonal to the opposing direction (the Y direction) of signal line relaying parts 101c between signal line relaying parts 101c of adjacent first plug contacts 101. In this manner, further improvement in EMS characteristics of the transmission cable line can be achieved, and favorable transmission quality can be ensured.
In addition, in plug connector 100, the distances from intermediate shielding plates 22A and 22B to the proximate first plug contact 101 are the same. With intermediate shielding plates 22A and 22B, an equal ground structure can be formed for first plug contact 101, and thus the transmission quality of the two signal transmission cable lines is further stabilized.
In addition, in plug connector 100, second plug contact 102 (second contact) includes shell connecting part 102g connected to receptacle shell 124 (mating shell) of receptacle connector 120 (mating connector). In this manner, second plug contact 102 can be reliably connected to the ground through receptacle shell 124.
In addition, in plug connector 100, shell connecting part 102g is provided between interconnection shielding plates 21A and 21B and intermediate shielding plates 22A and 22B. In this manner, second plug contact 102 can be connected to receptacle shell 124 with a simple structure.
In addition, in plug connector 100, second plug contact 102 (second contact)
includes shield connection part 102b connected to the outer shield layers 12 of the plurality of coaxial cables 10. In this manner, shielding part 102f and shield connection part 102b can be provided as a single member, and thus the component configuration can be simplified.
In addition, in plug connector 100, second plug contact 102 (second contact) includes first relaying base part 102d and second relaying base part 102e (relaying base part) connected in a T-shape to shield connection part 102b, and shielding part 102f is provided vertically at both end portions of first relaying base part 102d and second relaying base part 102e in the width direction. In this manner, shielding part 102f can be easily formed by bending.
In addition, plug connector 100 further includes cover shell 104 that physically makes contact with first relaying base part 102d and second relaying base part 102e (relaying base part), and is electrically connected to second plug contact 102 (second contact). In this manner, the ground structure of plug connector 100 is further reinforced.
In addition, in plug connector 100, cover shell 104 is connected to receptacle shell 124 (mating shell), and sandwiches receptacle shell 124 together with shell connecting part 102g. In this manner, the ground structure is reinforced, and the joined state of plug connector 100 and receptacle connector 120 can be stably maintained.
Second Embodiment
As illustrated in
Connector set 2 according to the second embodiment is different in that six coaxial cables 10 are connected, from connector set 1 of the first embodiment in which two coaxial cables 10 are connected. The main configurations of plug connector 200 and receptacle connector 220 are substantially the same as those of plug connector 100 and receptacle connector 120 of the first embodiment, and therefore the description thereof is omitted or simplified.
Connector set 2 electrically connects coaxial cable 10 and expansion card B11 when plug connector 200 and receptacle connector 220 are joined. More specifically, inner conductor 11 of coaxial cable 10 is electrically connected to signal pattern P1 of expansion card B11 through first plug contact 201 of plug connector 200 and first receptacle contact 221 of receptacle connector 220 (see
Detailed configurations of plug connector 200 and receptacle connector 220 are described below.
As illustrated in
Six first plug contacts 201 have the same configuration, and each of which includes signal line contact point part 201a, signal line connection part 201b and signal line relaying part 201c. Six first plug contacts 201 are each extended in the X direction, and are disposed side by side in the Y direction, which is the pitch direction. The structure and function of first plug contact 201 are the same as those of first plug contact 101 of the first embodiment.
Second plug contact 202 includes five ground contact parts 202A to 202E. Each of ground contact parts 202A to 202E includes ground contact point part 202a, shield connection part 202b, and ground relaying part 202c. In addition, ground relaying part 202c includes first relaying base part 202d, second relaying base part 202e, shielding part 202f and shell connecting part 202g. In addition, shielding part 202f includes interconnection shielding plates 23A and 23B and intermediate shielding plates 24A and 24B. Shield connection parts 202b of ground contact parts 202A to 202E are coupled with each other in a plate shape extending in the Y direction. The structures and functions of ground contact parts 202A to 202E are substantially the same as those of second plug contact 102 of the first embodiment.
Second plug contact 202 is disposed such that ground contact point parts 202a and
ground relaying parts 202c of ground contact parts 202A to 202E are located between two adjacent first plug contacts 201. That is, two first plug contacts 201 are line-symmetrically disposed with respect to ground contact parts 202A to 202E of second plug contact 202.
Ground contact point part 202a is disposed between signal line contact point parts 201a of first plug contact 201 so as to shield the part between signal line contact point parts 201a. When plug connector 200 and receptacle connector 220 are joined, ground contact point part 202a is brought into contact with and electrically connected to second receptacle contact 222 of receptacle connector 220 (see
Together with ground bar 205, shield connection part 202b is electrically connected to outer shield layer 12 of coaxial cable 10. Shield connection part 202b and ground bar 205 collectively sandwich in the Z direction outer shield layers 12 of six coaxial cables 10 exposed by step-stripping at the tip end portion, and are connected by a mechanical bonding method such as soldering, welding and pressure bonding, for example. In the present embodiment, after shield connection part 202b and ground bar 205 are bonded to outer shield layer 12, cable holding member 206 composed of an insulating material is formed through outer mold for the purpose of ensuring the strength, and thus outer shield layer 12, shield connection part 202b and ground bar 205 are integrated with each other.
First plug contact 201 and second plug contact 202 are assembled to plug insulator 203 in a mutually separated state.
In plug connector 200, ground contact point part 202a with the ground potential is
disposed between adjacent two signal line contact point parts 201a, and thus the part between signal line contact point parts 201a is shielded. In addition, interconnection shielding plates 23A and 23B of second plug contact 202 are disposed between adjacent two signal line connection parts 201b, and thus the part between signal line connection parts 201b is shielded. Further, intermediate shielding plates 24A and 24B of second plug contact 202 are disposed between adjacent two signal line relaying parts 201c, and thus the part between signal line relaying parts 201c is shielded. In this manner, improvement in EMS characteristics (e.g., characteristic impedance, insertion loss, return loss, crosstalk and the like) of the transmission cable line can be achieved, and favorable transmission quality can be ensured. In particular, in second plug contact 202, interconnection shielding plates 23A and
23B and intermediate shielding plates 24A and 24B are three-dimensionally formed to extend in the XZ plane, and thus the parts between signal line connection parts 201b and between signal line relaying parts 201c of first plug contact 201 are reliably shielded.
In addition, with two interconnection shielding plates 23A and 23B and two intermediate shielding plates 24A and 24B, an equal ground structure for first plug contact 201 is provided, and thus the transmission quality of the two adjacent signal transmission cable lines is stabilized. More specifically, since interconnection shielding plates 23A and 23B and intermediate shielding plates 24A and 24B are formed by bending at both end portions of first relaying base part 202d and second relaying base part 202e in the width direction, the distance from first plug contact 201 can be easily adjusted by setting the bending position, thus achieving easy impedance control.
As illustrated in
Six first receptacle contacts 221 and five second receptacle contacts 222 have the same shape, and are disposed alternately in the Y direction at the joining recess (whose reference numeral is omitted) of receptacle insulator 223.
First receptacle contact 221 includes signal line contact point part 221a and signal line surface mounting part 221b. Second receptacle contact 222 includes ground contact point part 222a and ground surface mounting part 222b. The structures and functions of first receptacle contact 221 and second receptacle contact 222 are the same as those of receptacle contact 121 and second receptacle contact 122 of the first embodiment.
First receptacle contact 221 and second receptacle contact 222 are assembled in a mutually separated state to receptacle insulator 223.
to the second embodiment. Note that in
As illustrated in
Further, shell connecting part 202g of second plug contact 202 makes contact with
the outer surface of the body part of receptacle shell 224. Receptacle connector 220 is sandwiched by second plug contact 202 and cover shell 204. In this manner, the joined state of connector set 2 is stably maintained.
As described above, connector set 2 according to the second embodiment has the following features, alone or in combination as appropriate.
Specifically, in connector set 2, plug connector 200 is an electric wire-to-board connector that connects the plurality of coaxial cables 10 used for high-frequency signal transmission and expansion card B11 when joined with receptacle connector 220 (mating connector) mounted on expansion card B11 (circuit board), and includes six first plug contacts 201 (first contacts) connected to inner conductors 11 of the plurality of coaxial cables 10, and second plug contact 202 (second contact) connected to the ground, which is the reference potential. Further, second plug contact 202 includes shielding part 202f disposed between the plurality of first plug contacts 201, and shielding part 202f includes two interconnection shielding plates 23A and 23B provided orthogonal to the opposing direction (the Y direction) of signal line connection parts 201b between signal line connection parts 201b of adjacent first plug contacts 201.
With connector set 2, improvement in EMS characteristics (e.g., characteristic impedance, insertion loss, return loss, crosstalk and the like) of the transmission cable line can be achieved, and favorable transmission quality can be ensured. In addition, it is possible to collectively connect the plurality of coaxial cables 10 to expansion card B11 and relaying FPC board B21. Thus, it is possible to meet the requirement of an intra-apparatus wiring of a communication device, and in particular achieve improvement in high-speed transmission characteristics, improvement in connectivity of coaxial cable 10 and size reduction of expansion card B11 and relaying FPC board B21 as the connection targets.
In addition, in plug connector 200, the distances from two interconnection shielding plates 23A and 23B to the proximate first plug contact 201 are the same. With interconnection shielding plates 23A and 23B, the equal ground structure for first plug contact 201 is formed, and thus the transmission quality of the two adjacent signal transmission cable lines is stabilized.
In addition, in plug connector 200, shielding part 202f includes two intermediate shielding plates 24A and 24B provided orthogonal to the opposing direction (the Y direction) of signal line relaying parts 201c between signal line relaying parts 201c of the adjacent first plug contact 201. In this manner, further improvement in EMS characteristics of the transmission cable line can be achieved, and favorable transmission quality can be ensured.
In addition, in plug connector 200, the distances from two intermediate shielding plates 24A and 24B to the proximate first plug contact 201 are the same. With intermediate shielding plates 24A and 24B, the equal ground structure for first plug contact 201 is formed, and thus the transmission quality of the two adjacent signal transmission cable lines is further stabilized.
In addition, in plug connector 200, second plug contact 202 (second contact) includes shell connecting part 202g connected to receptacle shell 224 (mating shell) of receptacle connector 220 (mating connector). In this manner, second plug contact 202 can be reliably connected to the ground through receptacle shell 224.
In addition, in plug connector 200, shell connecting part 202g is provided between interconnection shielding plates 23A and 23B and intermediate shielding plates 24A and 24B. In this manner, with a simple structure, second plug contact 202 can be connected to receptacle shell 224.
In addition, in plug connector 200, second plug contact 202 (second contact) includes shield connection part 202b connected to outer shield layers 12 of the plurality of coaxial cables 10. In this manner, shielding part 202f and shield connection part 202b can be provided as a single member, and thus the component configuration can be simplified. In addition, in plug connector 200, ground contact parts 202A to 202E (second
contact) of second plug contact 202 include first relaying base part 202d and second relaying base part 202e (relaying base part) connected in a T-shape to shield connection part 202b, and shielding part 202f is provided vertically at both end portions of first relaying base part 202d and second relaying base part 202e in the width direction. In this manner, shielding part 202f can be easily formed by bending.
In addition, plug connector 200 further includes cover shell 204 that makes physical contact with first relaying base part 202d and second relaying base part 202e (relaying base part) and is electrically connected to second plug contact 202 (second contact). In this manner, the ground structure of plug connector 200 is further reinforced.
In addition, in plug connector 200, cover shell 204 is connected to receptacle shell 224 (mating shell), so as to sandwich receptacle shell 224 together with shell connecting part 202g. In this manner, the ground structure is reinforced, and the joined state of plug connector 200 and receptacle connector 220 can be stably maintained.
The invention made by the present inventor has been described specifically based on the above embodiments. The invention is not limited to the above embodiments, but can be modified to the extent not to depart from the gist thereof.
For example, the specific structures of plug connectors 100 and 200 and receptacle connectors 120 and 220 are not limited to the embodiment, and may be appropriately changed. In addition, the number of coaxial cables 10 may be appropriately changed. For example, connector set 1 may be configured to collectively connect all of (e.g., six or eight) coaxial cables mounted on M.2 compliant expansion card B11.
In addition, the receptacle connector may include the structure illustrated in
In the embodiment, the configuration in which the first connector on the cable side is the plug connector and the second connector on the board side is the receptacle connector is described, but the present invention may be applied to connector set 3 with a configuration in which the first connector on the cable side is the receptacle connector and the second connector each on the board side is the plug connector (see
As illustrated in
The embodiments disclosed here are in all respects to be considered illustrative and
not restrictive. The scope of the invention is indicated by the claims, not by the above description, and is intended to include all modifications within the meaning and scope equivalent to the claims.
This application is entitled to and claims the benefit of Japanese Patent Application No. 2021-164921 filed on Oct. 6, 2021, the disclosure each of which including the specification, drawings and abstract is incorporated herein by reference in its entirety.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2021-164921 | Oct 2021 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2022/037327 | 10/5/2022 | WO |
