Connector and assembly method

Abstract

To provide a connector effective for achieving both improved signal transmission characteristics and improved attaching workability to a cable.SOLUTION: A second connector 3 includes: a base unit 500 having a connector base 510, insulating first and second housings 520A and 520B that protrude in the same direction from the connector base 510 along a fitting direction D22, a first signal contact 530A held by the first housing 520A and connected to a first signal conductor 24 of a first cable 20A, and a second signal contact 530B held by the second housing 520B and connected to a second signal conductor 24 of a second cable 20B; and electroconductive first and second shells 600A and 600B fixed to the connector base 510 so as to respectively surround the first and second housings 520A and 520B about the axis in the fitting direction D22.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to connectors and assembly methods. [Background technology]

[0002] Patent Document 1 discloses a plug connector that mates with a receptacle connector connected to a circuit board. The plug connector has a ground bar and a ground shell. The ground bar is electrically connected to the terminal portions of the outer conductors of multiple coaxial cables arranged in a row. The ground shell accommodates the terminal portions of the multiple coaxial cables and the ground bar, and is grounded to the circuit board when mated with the receptacle connector. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-3783 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides a connector that is effective in achieving both improved signal transmission characteristics and improved ease of attachment to a cable. [Means for solving the problem]

[0005] A connector according to one aspect of the present disclosure is a connector connected to a first cable having a first signal conductor and a second cable having a second signal conductor, and comprises: a connector base having opposing surfaces facing the outer periphery of the first cable and the outer periphery of the second cable; insulating first and second housings held in the connector base, aligned along an arrangement direction parallel to the opposing surfaces, and protruding in the same direction from the connector base along a mating direction perpendicular to the arrangement direction; a base unit having first signal contacts held in the first housing and connected to the first signal conductors, and second signal contacts held in the second housing and connected to the second signal conductors; a conductive first shell fixed to the connector base so as to surround the first housing around an axis along the mating direction; and a conductive second shell fixed to the connector base so as to surround the second housing around an axis along the mating direction.

[0006] In order to improve transmission characteristics, it is effective to individually shield the first signal contact corresponding to the first cable and the second signal contact corresponding to the second cable. However, the first shell surrounding the first signal contact can interfere with the process of connecting the first signal conductor to the first signal contact. The second shell surrounding the second signal contact can interfere with the process of connecting the second signal conductor to the second signal contact. In contrast, in this connector, the connector base, first housing, second housing, first signal contact, and second signal contact are integrated into a base unit. Therefore, after connecting the first cable and the second cable to the base unit, the connector can be attached to the cable by simply assembling the first shell and the second shell to the base unit. This is effective in achieving both improved signal transmission characteristics and ease of attachment to the cable.

[0007] The connector may further include an insulating outer housing that houses the connector base to which the first shell and the second shell are fixed. In this case, by making the outer housing retrofittable, the ease of attachment to the cable can be further improved.

[0008] The outer housing may have a front wall perpendicular to the mating direction, the front wall having a first opening and a second opening aligned in the arrangement direction, the first housing being surrounded by the first shell and protruding from the outer housing through the first opening, and the second housing being surrounded by the second shell and protruding from the outer housing through the second opening. In this case, the strength of the housing can be improved while allowing the first shell and the second shell to be individually connected to the shell of the mating connector.

[0009] The connector may further include an insulating separator fixed to the outer housing to regulate the distance between the first cable and the second cable, and the connector base may be disposed between the front wall and the separator. In this case, by maintaining an appropriate distance between the cables, signal transmission characteristics can be further improved.

[0010] The first shell may have a first base portion surrounding the first cable and fixed to the connector base, and a first end portion extending from the first base portion along the mating direction to surround the first housing, and the second shell may have a second base portion surrounding the second cable and fixed to the connector base, and a second end portion extending from the second base portion along the mating direction to surround the second housing. In this case, signal transmission characteristics can be further improved.

[0011] The connector base may have a conductive base plate along the opposing surface, and an insulating base housing that holds the base plate, the first housing, and the second housing, and the base plate may electrically connect the first base portion and the second base portion. In this case, the signal transmission characteristics can be further improved by suppressing the potential difference between the first base portion and the second base portion.

[0012] The first base portion may have a pair of first base sidewalls facing each other along the arrangement direction and a first base connecting wall connecting the pair of first base sidewalls, and the first cable may be enclosed by the pair of first base sidewalls, the first base connecting wall, and the base plate. The second base portion may have a pair of second base sidewalls facing each other along the arrangement direction and a second base connecting wall connecting the pair of second base sidewalls, and the second cable may be enclosed by the pair of second base sidewalls, the second base connecting wall, and the base plate. In this case, both the shielding properties of the first cable provided by the first base portion and the shielding properties of the second cable provided by the second base portion are improved. This can further improve signal transmission characteristics.

[0013] The first end portion may have a pair of first end sidewalls continuous with the pair of first base sidewalls and a first end connecting wall continuous with the first base connecting wall and connecting the pair of first end sidewalls, and the second end portion may have a pair of second end sidewalls continuous with the pair of second base sidewalls and a second end connecting wall continuous with the second base connecting wall and connecting the pair of second end sidewalls. In this case, by leaving the shield facing the first end connecting wall to the mating connector and also leaving the shield facing the second end connecting wall to the mating connector, it is possible to achieve both improved signal transmission characteristics and a thinner connector.

[0014] The first signal contacts may have a first connecting portion and a first contacting portion aligned in order along the direction in which the first housing protrudes relative to the connector base, the second signal contacts may have a second connecting portion and a second contacting portion aligned in order along the direction in which the first housing protrudes, the first housing may hold the first signal contacts such that the first connecting portion is exposed toward the first end connection wall and the first contacting portion is exposed in a direction opposite to the direction toward the first end connection wall, and the second housing may hold the second signal contacts such that the second connecting portion is exposed toward the second end connection wall and the second contacting portion is exposed in a direction opposite to the direction toward the second end connection wall. In this case, by exposing the first contacting portion and the second contacting portion to the outside of the first shell and the second shell, respectively, and surrounding the first connecting portion and the second connecting portion with the first shell and the second shell, respectively, it is possible to achieve both improved signal transmission characteristics and a thinner connector.

[0015] The distance between the pair of first end sidewalls may be smaller than the distance between the pair of first base sidewalls, and the distance between the pair of second end sidewalls may be smaller than the distance between the pair of second base sidewalls, which can further improve signal transmission characteristics.

[0016] Each of the pair of first end sidewalls may have a first resilient contact portion that approaches the first housing when an external force is applied and moves away from the first housing when the external force is removed, and each of the pair of second end sidewalls may have a second resilient contact portion that approaches the second housing when an external force is applied and moves away from the second housing when the external force is removed, which can further improve signal transmission characteristics.

[0017] The first cable may further include a first outer conductor surrounding the first signal conductor, the second cable may further include a second outer conductor surrounding the second signal conductor, and the base plate may have a first fixing hole corresponding to the first outer conductor and a second fixing hole corresponding to the second outer conductor, which can further improve signal transmission characteristics and ease of installation.

[0018] The base plate may have a pair of first shell fastening holes corresponding to the pair of first base sidewalls, respectively, and a pair of second shell fastening holes corresponding to the pair of second base sidewalls, each of the pair of first base sidewalls having a first fastening piece inserted into the corresponding first shell fastening hole, each of the pair of second base sidewalls having a second fastening piece inserted into the corresponding second shell fastening hole, the first fastening hole being located between the pair of first shell fastening holes, and the second fastening hole being located between the pair of second shell fastening holes. In this case, further improvement in signal transmission characteristics and further improvement in installation workability can be achieved.

[0019] An assembly method according to another aspect of the present disclosure includes: arranging an outer periphery of a first cable against the opposing surface of a base unit having a connector base with an opposing surface; insulating first and second housings aligned along an array direction parallel to the opposing surface and each protruding from the connector base along a first direction parallel to the opposing surface and perpendicular to the array direction; first signal contacts held in the first housing; and second signal contacts held in the second housing; placing an outer periphery of a second cable against the opposing surface and connecting the second signal conductor of the second cable to the second signal contacts; arranging an electrically conductive first shell to surround the first housing around an axis parallel to the opposing surface and perpendicular to the array direction with the first signal conductor connected to the first signal contact; fixing the first shell to the connector base; and arranging an electrically conductive second shell to surround the second housing around an axis parallel to the opposing surface and perpendicular to the array direction with the second signal conductor connected to the second signal contact.

[0020] The method may further include housing the connector base, to which the first shell and the second shell are fixed, in an insulating outer housing.

[0021] The connector base has a conductive base plate along the opposing surface, and an insulating base housing that holds the base plate, the first housing, and the second housing, and the base plate has a first shell fixing hole aligned along the arrangement direction, the first fixing hole, a second shell fixing hole aligned along the arrangement direction, and a second fixing hole, and fixing the first shell to the connector base may include soldering the first shell to the base plate through the first shell fixing hole and soldering the first outer conductor of the first cable to the base plate through the first fixing hole, and fixing the second shell to the connector base may include soldering the second shell to the base plate through the second shell fixing hole and soldering the second outer conductor of the second cable to the base plate through the second fixing hole. [Effects of the Invention]

[0022] According to the present disclosure, it is possible to provide a connector that achieves both improved signal transmission characteristics and improved ease of attachment to a cable. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is a perspective view illustrating a connector system. [Figure 2] FIG. 2 is a perspective view of the connector system of FIG. 1 as seen from below. [Figure 3] FIG. 2 is a cross-sectional view taken along line III-III in FIG. [Figure 4] 4 is a cross-sectional view showing a state in which the second connector in FIG. 3 is fitted into the first connector. [Figure 5] 2 is a perspective view of the first connector in FIG. 1 as seen from below. [Figure 6] FIG. 6 is an exploded perspective view of the first connector in FIG. 5. [Figure 7] FIG. 7 is a partially enlarged view of FIG. [Figure 8] FIG. 4 is an enlarged view of the shell of the first connector as viewed from above. [Figure 9] FIG. 4 is an enlarged view of the shell of the first connector as viewed from below. [Figure 10] 2 is an exploded perspective view of the second connector in FIG. 1. FIG. [Figure 11] FIG. 11 is a partially enlarged view of FIG. [Figure 12] FIG. 10 is an enlarged view of the shell of the second connector as viewed from above. [Figure 13] FIG. 10 is an enlarged view of the shell of the second connector as viewed from below. [Figure 14] 10A to 10C are diagrams illustrating an assembly procedure for the second connector. [Figure 15] 10A to 10C are diagrams illustrating an assembly procedure for the second connector. [Figure 16] 10A to 10C are diagrams illustrating an assembly procedure for the second connector. [Figure 17] 10A to 10C are diagrams illustrating an assembly procedure for the second connector. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, the embodiments will be described in detail with reference to the drawings. In the description, the same elements or elements having the same functions are denoted by the same reference numerals, and redundant description will be omitted.

[0025] [Connector System] The connector system 1 shown in Figures 1 and 2 is used to connect a circuit board 10 (shown in Figure 3) to multiple cables 20 in applications requiring low-profile and low-frequency signal transmission. One example of such an application is an information processing system in which signals are transmitted on the circuit board 10 using multiple cables 20 instead of printed wiring on the circuit board 10. By using shielded cables for each of the multiple cables 20, signals can be transmitted with higher signal transmission characteristics than printed wiring. Signal transmission characteristics refer to less signal degradation during signal transmission, and high signal transmission characteristics refer to less signal degradation during signal transmission. Specific examples of signal degradation include noise contamination due to crosstalk and signal attenuation.

[0026] In order to further improve the signal transmission characteristics of the multiple cables 20, it is necessary to position the connection points between the circuit board 10 and the multiple cables 20 close to the circuit elements (e.g., processors) on the circuit board 10. To position the connection points between the circuit board 10 and the multiple cables 20 close to the circuit elements, it is necessary to avoid interference with heat sinks and the like provided on the circuit elements. For this reason, it is necessary to reduce the height of the connector system 1.

[0027] The connector system 1 includes a first connector 2 and a second connector 3. The first connector 2 is, for example, a receptacle connector and is connected to a circuit board 10. The second connector 3 is, for example, a plug connector and is connected to a plurality of cables 20. The second connector 3 is connectable to the first connector 2. By connecting the second connector 3 to the first connector 2, the plurality of cables 20 are electrically connected to the circuit board 10. The first connector 2 and the second connector 3 are mated with each other along a mating direction D12 parallel to the circuit board 10.

[0028] The first connector 2 includes a plurality of signal contacts 200, a plurality of shells 300, and a housing 100. The plurality of signal contacts 200 are arranged along an arrangement direction D11 that is parallel to the circuit board 10 and perpendicular to the mating direction D12. Each of the plurality of signal contacts 200 is electrically connected to the circuit board 10 and contacts a signal contact of the mating connector (second connector 3). Each of the plurality of shells 300 surrounds at least one signal contact 200 around an axis along the mating direction D12.

[0029] The multiple signal contacts 200 transmit multiple types of signals. Multiple shells 300 may be provided for each of the multiple types of signals. In this case, only one type of signal is transmitted in the area surrounded by each of the multiple shells 300, and other signals are not transmitted. As an example, each of the multiple signal contacts 200 may transmit one type of signal referenced to ground potential. In this case, multiple shells 300 are provided for each of the multiple signal contacts 200. Each of the multiple shells 300 surrounds only one signal contact 200 and does not surround the other signal contacts 200. The multiple signal contacts 200 may include multiple pairs of signal contacts 200, each transmitting multiple types of differential signals. In this case, multiple shells 300 are provided for each of the multiple pairs of signal contacts 200. Each of the multiple shells 300 surrounds only one pair of signal contacts 200 and does not surround the other signal contacts 200.

[0030] The housing 100 integrally holds a plurality of signal contacts 200 and a plurality of shells 300 .

[0031] 1 and 10, the second connector 3 includes a base unit 500 and a plurality of shells 600. The base unit 500 includes a connector base 510, a plurality of insulating housings 520, and a plurality of conductive signal contacts 530. The connector base 510 extends along an arrangement direction D11 (D21). The plurality of housings 520 are aligned along the arrangement direction D11 and protrude in the same direction from the connector base 510 along a mating direction D12 (D22).

[0032] The signal contacts 530 are held in the housings 520 so as to be aligned along the arrangement direction D11. Each of the signal contacts 530 is electrically connected to one of the cables 20 and comes into contact with a signal contact 200 of the mating connector (first connector 2). Each of the housings 520 holds at least one signal contact 530.

[0033] The multiple signal contacts 530 may transmit the multiple types of signals described above, and multiple housings 520 may be provided for each of the multiple types of signals. In this case, only one type of signal is transmitted through the multiple housings 520, and no other signals are transmitted. As an example, each of the multiple signal contacts 530 may transmit one type of signal referenced to ground potential. In this case, multiple housings 520 are provided for each of the multiple signal contacts 530. Each of the multiple housings 520 holds only one signal contact 530 and does not hold any other signal contacts 530. The multiple signal contacts 530 may include multiple pairs of signal contacts 530, each transmitting multiple types of differential signals. In this case, multiple housings 520 are provided for each of the multiple pairs of signal contacts 530. Each of the multiple housings 520 holds only one pair of signal contacts 530 and does not hold any other signal contacts 530.

[0034] The multiple shells 600 correspond to the multiple housings 520, respectively. Each of the multiple shells 600 surrounds the corresponding housing 520 around an axis along the fitting direction D12 (D22).

[0035] The multiple housings 520 correspond to the multiple shells 300, respectively. As shown in Figures 3 and 4, each of the multiple housings 520 is inserted into the corresponding shell 300 along the mating direction D12. Each of the multiple shells 600 is mated with the corresponding shell 300 along the mating direction D12. Each of the multiple signal contacts 530 contacts a corresponding signal contact 200 in the corresponding shell 300. In this way, the multiple cables 20 are electrically connected to the circuit board 10.

[0036] According to this connector system 1, by providing individual shells 300 for the multiple signal contacts 200, it is possible to individually optimize the relationship between the signal contacts 200 and the shells 300. Furthermore, the shells 300 surround the signal contacts 200 around an axis along the mating direction D12 parallel to the circuit board 10. This restricts the mating direction of the second connector 3 into the first connector 2 to a direction parallel to the circuit board 10. This makes it possible to reduce the height of the connection formed by the first connector 2 and the second connector 3 (reducing the height relative to the surface of the circuit board 10). This is therefore effective in achieving both improved signal transmission characteristics and a reduced height.

[0037] The reduced height makes it possible to avoid interference with the heat sink 12 and place the first connector 2 near the circuit element 11, as shown in Figures 3 and 4, for example, thereby further improving signal transmission characteristics.

[0038] Each of the multiple shells 300 may complement the surrounding of the housing 520 by the corresponding shell 600. For example, the shell 300 may surround a portion of the periphery of the housing 520 that is not surrounded by the shell 600. This reduces the overlap between the shell 600 and the shell 300, thereby enabling a further reduction in height.

[0039] The configurations of the first connector 2 and the second connector 3 will be described in more detail below.

[0040] [First connector] In describing the first connector 2, for convenience, the direction toward the surface of the circuit board will be referred to as "downward," and the direction away from the surface of the circuit board will be referred to as "upward." Fig. 5 is a perspective view of the first connector 2 as seen from below, and Fig. 6 is an exploded perspective view of the first connector 2 in Fig. 5. As shown in Fig. 5, the first connector 2 has an insulating housing 100, a plurality of conductive signal contacts 200, and a plurality of conductive shells 300.

[0041] 6 and 7, the housing 100 has an opposing surface 101, a receding surface 102, and a plurality of protrusions 110. The opposing surface 101 faces the circuit board 10. With the opposing surface 101 facing the circuit board 10, the receding surface 102 faces the circuit board 10 at a position separated from the circuit board 10. The plurality of protrusions 110 are aligned along an arrangement direction D11 parallel to the opposing surface 101, and each protrudes from the receding surface 102.

[0042] The multiple protrusions 110 correspond to the multiple shells 300, respectively. Each of the multiple shells 300 is held by a corresponding protrusion 110. At least one signal contact 200 surrounded by each of the multiple shells 300 is also held by the protrusion 110. For example, a pair of signal contacts 200 surrounded by each of the multiple shells 300 are held by the protrusion 110 so as to be aligned along the arrangement direction D11. The housing 100 is formed by molding a resin material or the like.

[0043] One protrusion 110, the corresponding shell 300, and a pair of signal contacts 200 constitute one set of signal transmission parts TP1. The first connector 2 includes multiple sets of signal transmission parts TP1 corresponding to the multiple protrusions 110, respectively. The multiple sets of signal transmission parts TP1 are arranged along the arrangement direction D11 and transmit the multiple types of signals described above, respectively. Below, the configuration of the first and second sets of signal transmission parts TP1 from the left side of the figure will be illustrated in more detail as representative of the multiple sets of signal transmission parts TP1.

[0044] Although the configuration of the multiple sets of signal transmission parts TP1 is common, for ease of explanation, the convex part 110, signal contact 200 and shell 300 belonging to the first signal transmission part TP1 from the left in the figure will be referred to as the first convex part 110A, first signal contact 200A and first shell 300A, and the convex part 110, signal contact 200 and shell 300 belonging to the second signal transmission part TP1 from the left in the figure will be referred to as the second convex part 110B, second signal contact 200B and second shell 300B, to distinguish them from one another.

[0045] 7 in particular, the first signal contacts 200A and the second signal contacts 200B are held in the housing 100 so as to be aligned along the arrangement direction D11. For example, the pair of first signal contacts 200A is held by the first convex portion 110A so as to be aligned along the arrangement direction D11, and the pair of second signal contacts 200B is held by the second convex portion 110B so as to be aligned along the arrangement direction D11, and the pair of first signal contacts 200A and the pair of second signal contacts 200B are aligned along the arrangement direction D11 in accordance with the arrangement of the first convex portion 110A and the second convex portion 110B.

[0046] The pair of first signal contacts 200A transmits a first differential signal, and the pair of second signal contacts 200B transmits a second differential signal that is different from the first differential signal.

[0047] Each of the pair of first signal contacts 200A has a connecting portion 201 (first connecting portion) and a contact portion 202 (first contact portion). The connecting portion 201 is electrically connected to the circuit board 10. For example, the connecting portion 201 is connected to a conductive signal terminal formed on the circuit board 10 by soldering or the like. The contact portion 202 protrudes from the connecting portion 201 along a mating direction D12 that is parallel to the opposing surface 101 and perpendicular to the arrangement direction D11. For convenience of explanation, the protruding direction of the contact portion 202 relative to the connecting portion 201 will be referred to as the "forward" direction, and the opposite direction will be referred to as the "rearward" direction. The first signal contact 200A is bent in a crank shape between the connecting portion 201 and the contact portion 202 so that the contact portion 202 is positioned away from the circuit board 10. The first signal contact 200A is formed, for example, by punching and bending a thin metal plate.

[0048] Each of the pair of second signal contacts 200B is configured similarly to the first signal contact 200A, and has a connection portion 201 (second connection portion) and a contact portion 202 (second connection portion). The connection portion 201 of the second signal contact 200B is connected by soldering or the like to a conductive signal terminal formed on the circuit board 10, separate from the signal terminal to which the connection portion 201 of the first signal contact 200A is connected.

[0049] The first shell 300A is held in the housing 100 so as to surround the pair of first signal contacts 200A around an axis along the mating direction D12, and is electrically connected to the circuit board 10 with the opposing surface 101 facing the circuit board 10. The term "surrounding" does not necessarily mean surrounding the entire circumference of the target object, but also includes partially surrounding the target object. For example, "surrounding" can be defined as facing more than half of the circumference of the target object. The same applies hereinafter.

[0050] In the mating direction D12, the first shell 300A may partially surround the pair of first signal contacts 200A. For example, the first shell 300A surrounds at least the contact portions 202 of the pair of first signal contacts 200A.

[0051] Within the first shell 300A, no signals other than the one type of signal transmitted by at least one first signal contact 200A are transmitted. This one type of signal is the only signal transmitted within the first shell 300A. For example, within the first shell 300A, only the first differential signal is transmitted, and no other signals are transmitted. The first shell 300A surrounds only the pair of first signal contacts 200A, and does not surround the other signal contacts 200A.

[0052] There are no particular limitations on the shape surrounding the pair of first signal contacts 200A. The first shell 300A may surround the pair of first signal contacts 200A in a circular shape, or may surround the pair of first signal contacts 200A in a polygonal shape. As an example, the first shell 300A may surround the first signal contacts 200A in a rectangular shape. For example, the first shell 300A has a pair of side walls 310 (first side walls) and a connecting wall 320 (first connecting wall).

[0053] The pair of side wall portions 310 face each other along the arrangement direction D11. The contact portions 202 of the pair of first signal contacts 200A are located between the pair of side wall portions 310. The connecting wall portion 320 extends parallel to the opposing surface 101 and connects the pair of side wall portions 310. With the opposing surface 101 facing the circuit board 10, the connecting wall portion 320 may be located between the contact portions 202 and the circuit board 10.

[0054] The first shell 300A may further include an opposing wall portion 330 (first opposing wall portion). The opposing wall portion 330 faces the connecting wall portion 320 in a direction perpendicular to the opposing surface 101. The contact portions 202 of the pair of first signal contacts 200A are located between the connecting wall portion 320 and the opposing wall portion 330. As described above, when the connecting wall portion 320 is located between the contact portions 202 and the circuit board 10, the opposing wall portion 330 is located between the contact portions 202 and the receding surface 102.

[0055] The first shell 300A may further have shell slits 333 (first shell slits) that divide the opposing wall portion 330 to correspond to each of the pair of side wall portions 310 (see FIG. 8). For example, the shell slit 333 is formed along the fitting direction D12 over the entire length of the opposing wall portion 330, and divides the opposing wall portion 330 into a portion 331 that corresponds to one side wall portion 310 and a portion 332 that corresponds to the other side wall portion 310.

[0056] A receiving space IS (first receiving space) is formed between the contact portion 202 and the opposing wall portion 330. A mating first housing (one of the multiple housings 520) of the mating connector (second connector 3) is inserted into the receiving space IS along the mating direction D12, the shell 600 surrounding the mating first housing is fitted into the first shell 300A, and the mating signal contacts (signal contacts 530) held in the mating first housing come into contact with the contact portions 202 of the first signal contacts 200A (see FIG. 4). For example, a pair of signal contacts 530 come into contact with the contact portions 202 of the pair of first signal contacts 200A, respectively.

[0057] The first shell 300A may further have a pair of protruding portions 340 (first protruding portions) protruding rearward from each of the pair of side wall portions 310. The connecting portions 201 of the pair of first signal contacts 200A are located between the pair of protruding portions 340.

[0058] The first shell 300A may further have a pair of shell connecting portions 341 (first shell connecting portions) formed on the pair of overhanging portions 340, respectively, so as to be electrically connected to the circuit board 10 when the opposing surface 101 faces the circuit board 10. For example, each of the pair of shell connecting portions 341 is formed on the lower edge of the corresponding overhanging portion 340, and is connected by soldering or the like to a conductive ground terminal formed on the circuit board 10 separately from the above-mentioned signal terminal. In the circuit board 10, a ground potential is applied to the ground terminal. The same applies to the ground terminals to which other portions of the shell connecting portions 341 are connected.

[0059] The first shell 300A may further include an anchor portion 350 (first anchor portion) and an intermediate connection portion 360 (first intermediate connection portion) (see FIG. 9). The anchor portion 350 protrudes rearward from the connecting wall portion 320 and is held by the first protrusion 110A. The intermediate connection portion 360 is formed on the connecting wall portion 320 so as to be electrically connected to the circuit board 10 when the opposing surface 101 faces the circuit board 10. For example, the intermediate connection portion 360 is formed at the rear end of the anchor portion 350 and protrudes from the rear end of the anchor portion 350 in a direction away from the receding surface 102. As an example, the intermediate connection portion 360 protrudes rearward and downward from the rear end of the anchor portion 350 and is connected to a ground terminal formed on the circuit board 10 by soldering or the like.

[0060] The first shell 300A is formed by, for example, stamping and forming a thin metal plate.

[0061] The second shell 300B is held in the housing 100 so as to surround the pair of second signal contacts 200B around an axis along the mating direction D12, and is electrically connected to the circuit board 10 with the opposing surface 101 facing the circuit board 10. For example, the second shell 300B surrounds the contact portions 202 of at least one pair of second signal contacts 200B. No signals are transmitted within the second shell 300B other than the one type of signal transmitted by at least one second signal contact 200B. This one type of signal is the only signal transmitted within the second shell 300B. For example, only the second differential signal is transmitted within the second shell 300B, and no other signals are transmitted within the second shell 300B. The second shell 300B surrounds only the pair of second signal contacts 200B, and does not surround the other signal contacts 200B.

[0062] The second shell 300B is configured similarly to the first shell 300A, and has a pair of side walls 310 (second side walls) and a connecting wall 320 (second connecting wall). The contact portions 202 of the pair of second signal contacts 200B are located between the pair of side walls 310.

[0063] Similar to the first shell 300A, the second shell 300B may further include an opposing wall portion 330 (second opposing wall portion) and a shell slit 333 (second shell slit). The contact portions 202 of the pair of second signal contacts 200B are located between the connecting wall portion 320 and the opposing wall portion 330. When the connecting wall portion 320 is located between the contact portions 202 and the circuit board 10, the opposing wall portion 330 is located between the contact portions 202 and the receding surface 102.

[0064] A receiving space IS (second receiving space) is formed between the contact portion 202 and the opposing wall portion 330. A mating second housing (one of the multiple housings 520) of the mating connector (second connector 3) is inserted into the receiving space IS along the mating direction D12, the shell 600 surrounding the mating second housing is fitted into the second shell 300B, and the mating signal contacts (signal contacts 530) held in the mating second housing come into contact with the contact portions 202 of the second signal contacts 200B (see FIG. 4). For example, a pair of signal contacts 530 come into contact with the contact portions 202 of a pair of second signal contacts 200B, respectively.

[0065] Similar to the first shell 300A, the second shell 300B may further include a pair of protruding portions 340 (second protruding portions) and a pair of shell connecting portions 341. The connecting portions 201 of the pair of second signal contacts 200B are located between the pair of protruding portions 340. Similar to the pair of shell connecting portions 341 of the first shell 300A, the pair of shell connecting portions 341 of the second shell 300B are connected to ground terminals formed on the circuit board 10 by soldering or the like.

[0066] Like the first shell 300A, the second shell 300B may further include an anchor portion 350 and an intermediate connection portion 360. The anchor portion 350 protrudes rearward from the connecting wall portion 320 and is held by the second protrusion 110B. The intermediate connection portion 360 is connected to a ground terminal formed on the circuit board 10 by soldering or the like.

[0067] As shown in FIG. 7, the first protrusion 110A protrudes from the recessed surface 102 and is positioned between a pair of overhanging portions 340 of the first shell 300A to hold the pair of first signal contacts 200A and the first shell 300A. For example, the first protrusion 110A has a pair of contact holding holes 111 (positioned above the first protrusion 110A) and an anchor hole 112. The pair of contact holding holes 111 are aligned along the arrangement direction D11 and each penetrate the first protrusion 110A along the mating direction D12. The contact portions 202 of the pair of first signal contacts 200A are inserted into the pair of contact holding holes 111 from the rear. Ends of the contact portions 202 of the pair of first signal contacts 200A protrude forward from the first protrusion 110A and are surrounded by the first shell 300A. The anchor holes 112 are positioned below the pair of contact holding holes 111 and penetrate the first protrusion 110A along the fitting direction D12. The anchor portions 350 of the first shell 300A are inserted into the anchor holes 112 from the front.

[0068] A slit 113 (first slit) may be formed in the first protrusion 110A. The slit 113 allows displacement of the intermediate connector 360 along the fitting direction D12. For example, the slit 113 is formed along the fitting direction D12 over the entire length of the lower part of the anchor hole 112, and the intermediate connector 360 is disposed within the slit 113. Because the slit 113 extends along the fitting direction D12, displacement of the intermediate connector 360 along the fitting direction D12 is allowed.

[0069] The housing 100 may further include a first support portion 114A. The first support portion 114A protrudes forward from the first protrusion 110A and is located between the contact portion 202 and the connecting wall portion 320. For example, the first support portion 114A protrudes forward from the first protrusion 110A between the pair of contact holding holes 111 and the anchor hole 112.

[0070] The second protrusion 110B protrudes from the recessed surface 102 and is positioned between a pair of overhanging portions 340 of the second shell 300B to hold the pair of second signal contacts 200B and the second shell 300B. For example, like the first protrusion 110A, the second protrusion 110B has a pair of contact holding holes 111 (positioned above the second protrusion 110B) and an anchor hole 112. The contact portions 202 of the pair of second signal contacts 200B are inserted into the pair of contact holding holes 111 from the rear, respectively. Ends of the contact portions 202 of the pair of second signal contacts 200B protrude forward from the second protrusion 110B and are surrounded by the second shell 300B. The anchor portion 350 of the second shell 300B is inserted into the anchor hole 112 from the front. Like the first protrusion 110A, the second protrusion 110B may have a slit 113 (second slit). In the slit 113, the intermediate connector 360 of the second shell 300B is disposed.

[0071] The housing 100 may further include a second support portion 114B similar to the first support portion 114A. The second support portion 114B protrudes forward from the second protrusion 110B and is located between the contact portion 202 and the connecting wall portion 320. For example, the second support portion 114B protrudes forward from the second protrusion 110B between the pair of contact holding holes 111 and the anchor hole 112.

[0072] 5 and 6, the first connector 2 may further include a conductive outer shell 400. The housing 100 has a rear surface 103 of the opposing surface 101, and the outer shell 400 covers the rear surface 103.

[0073] For example, the outer shell 400 has a main plate portion 410, a pair of outer side walls 420, and a pair of anchor portions 430, and is formed by punching and bending a thin metal plate material. The main plate portion 410 extends so as to cover at least a portion of the rear surface 103. The pair of outer side walls 420 are provided at both ends of the main plate portion 410 in the arrangement direction D11. For example, the pair of outer side walls 420 are bent downward with respect to the main plate portion 410 at both ends of the main plate portion 410 and face each other along the arrangement direction D11. The pair of anchor portions 430 are also provided at both ends of the main plate portion 410 in the arrangement direction D11 and are located rearward of the pair of outer side walls 420. For example, the pair of anchor portions 430 are bent downward with respect to the main plate portion 410 at both ends of the main plate portion 410 and face each other along the arrangement direction D11. When viewed from the front, the multiple shells 300 are positioned between the pair of outer side wall portions 420 and also between the pair of anchor portions 430 .

[0074] The pair of anchor portions 430 are held by the housing 100. For example, the housing 100 further has a pair of outer retaining holes 121 that respectively correspond to the pair of anchor portions 430. Each of the pair of outer retaining holes 121 passes through the housing 100 from above. The pair of anchor portions 430 are inserted into the pair of outer retaining holes 121 from above.

[0075] The pair of outer side walls 420 may protrude forward beyond the front surface of the housing 100. This allows the second connector 3 to be smoothly guided along the mating direction D12.

[0076] A pair of protruding portions 412 that protrude forward beyond the front surface of the housing 100 are formed on both ends of the main plate portion 410, and a pair of locking openings 411 are formed in each of the pair of protruding portions 412. When viewed from below, each of the pair of locking openings 411 is located between the multiple shells 300 and the pair of outer side walls 420. A pair of locking claws 814 of the second connector 3, which will be described later, engages with the pair of locking openings 411, respectively.

[0077] The outer shell 400 may further include a pair of outer connection portions 421. The pair of outer connection portions 421 are formed on the pair of outer side wall portions 420, respectively, so as to be electrically connected to the circuit board 10 with the opposing surfaces 101 facing the circuit board 10. For example, each of the pair of outer connection portions 421 is formed on the lower edge of the corresponding outer side wall portion 420, and is connected to a ground terminal formed on the circuit board 10 by soldering or the like.

[0078] [Second connector] As described above, the second connector 3 is connected to a plurality of cables 20. As shown in FIG. 11 in particular, each of the plurality of cables 20 has at least one signal conductor 24. One cable 20 transmits one type of signal. For example, the cable 20 transmits one type of differential signal. For example, one cable 20 has a pair of electric wires 21, an outer conductor 22, and an insulating outer sheath 23. Each of the pair of electric wires 21 has one signal conductor 24 and an insulating inner sheath 25 that covers the signal conductor 24. Hereinafter, the signal conductors 24 of the pair of electric wires 21 will be referred to as the pair of signal conductors 24. The above-mentioned differential signal is transmitted by the pair of signal conductors 24. The outer conductor 22 surrounds the pair of electric wires 21, and the outer sheath 23 covers the outer conductor 22.

[0079] Fig. 10 is an exploded perspective view of the second connector 3, and Fig. 11 is a partially enlarged view of Fig. 10. As shown in Fig. 10, the second connector 3 has a base unit 500 and a plurality of shells 600. As shown in Fig. 11, the base unit 500 has a connector base 510, a plurality of insulative housings 520, and a plurality of conductive signal contacts 530.

[0080] The connector base 510 has an opposing surface 511. The opposing surface 511 faces the outer peripheries of the ends of the multiple cables 20 arranged along the arrangement direction D21. The multiple housings 520 correspond to the multiple cables 20, respectively. The multiple housings 520 are aligned along the arrangement direction D21 and each protrudes in a direction away from the end of the corresponding cable 20 along a mating direction D22 that is parallel to the opposing surface 511 and perpendicular to the arrangement direction D21.

[0081] Hereinafter, for convenience of explanation, the direction in which the opposing surface 511 faces will be referred to as "upward," and the opposite direction will be referred to as "downward." Furthermore, the direction in which the multiple housings 520 protrude from the connector base 510 will be referred to as "forward," and the opposite direction will be referred to as "rearward." According to this definition, the multiple cables 20 extend rearward from the connector base 510. When the second connector 3 is mated with the first connector 2, the up and down in the description of the first connector 2 will coincide with the up and down in the description of the second connector 3. Furthermore, the front in the description of the second connector 3 corresponds to the rear in the description of the first connector 2, and the rear in the description of the second connector 3 corresponds to the front in the description of the first connector 2.

[0082] The plurality of signal contacts 530 includes a plurality of pairs of signal contacts 530 corresponding to the plurality of housings 520, respectively. Each of the plurality of pairs of signal contacts 530 is held in the corresponding housing 520. Each of the plurality of pairs of signal contacts 530 is connected to a pair of the signal conductors 24 described above.

[0083] The plurality of shells 600 respectively correspond to the plurality of housings 520. Each of the plurality of shells 600 surrounds the corresponding housing 520.

[0084] The second connector 3 includes multiple sets of signal transmission units TP2 corresponding to the multiple housings 520, respectively. The multiple sets of signal transmission units TP2 are arranged along the arrangement direction D21 and transmit the multiple types of signals described above, respectively. Below, the configuration of two sets of signal transmission units TP2, the first and second from the right side of the drawing, will be illustrated in more detail. The first signal transmission unit TP2 from the right side of the drawing corresponds to the first signal transmission unit TP1 from the left side in FIG. 7. The second signal transmission unit TP2 from the right side of the drawing corresponds to the second signal transmission unit TP2 from the left side in FIG. 7.

[0085] 11, the housing 520, signal contacts 530, and shell 600 belonging to the first signal transmission portion TP2 from the right are distinguished from one another as the first housing 520A, first signal contacts 530A, and first shell 600A, and the housing 520, signal contacts 530, and shell 600 belonging to the second signal transmission portion TP2 from the right are distinguished from one another as the second housing 520B, second signal contacts 530B, and second shell 600B. In addition, the cable 20 corresponding to the first signal transmission portion TP2 from the right is distinguished from one another as the first cable 20A, and the cable 20 belonging to the second signal transmission portion TP2 from the right is distinguished from one another as the second cable 20B.

[0086] The first housing 520A and the second housing 520B are aligned along the arrangement direction D21 and protrude forward from the connector base 510 along the fitting direction D22.

[0087] 11, the pair of first signal contacts 530A are held in the first housing 520A and are respectively connected to the pair of signal conductors 24 of the first cable 20A. Each of the pair of first signal contacts 530A has a connecting portion 531 (first connecting portion) and a contact portion 532 (first contact portion) arranged in order toward the front.

[0088] The first housing 520A holds a pair of first signal contacts 530A such that the connecting portions 531 are exposed upward and the contacting portions 532 are exposed downward (see FIG. 3). This allows the signal conductors 24 to be connected to the connecting portions 531 from above, and the contacting portions 532 can come into contact with the first signal contacts 200A of the mating connector (first connector 2) from above (see FIG. 4).

[0089] At the tip of the first cable 20A, the outer sheath 23, the outer conductor 22, and the inner sheath 25 are removed from the portion corresponding to the connecting portion 531, and a pair of exposed signal conductors 24 are connected to the connecting portion 531, respectively.

[0090] The first signal contact 530A is formed by, for example, stamping and forming a thin metal plate material.

[0091] The pair of second signal contacts 530B are held in the second housing 520B and are respectively connected to the pair of signal conductors 24 of the second cable 20B. Similar to the first housing 520A, each of the pair of second signal contacts 530B has a connecting portion 531 (second connecting portion) and a contact portion 532 (second contact portion).

[0092] The second housing 520B holds a pair of second signal contacts 530B such that the connecting portions 531 are exposed upward and the contacting portions 532 are exposed downward (see FIG. 3). This allows the signal conductors 24 to be connected to the connecting portions 531 from above, and the contacting portions 532 can come into contact with the second signal contacts 200B of the mating connector (first connector 2) from above (see FIG. 4).

[0093] At the tip of the second cable 20B, the outer sheath 23, the outer conductor 22, and the inner sheath 25 are removed from the portion corresponding to the connecting portion 531, and a pair of exposed signal conductors 24 are connected to the connecting portion 531, respectively.

[0094] The first shell 600A is fixed to the connector base 510 so as to surround the first housing 520A around an axis along the fitting direction D22. For example, the first shell 600A has a base portion 610 (first base portion) and an end portion 620 (first end portion).

[0095] The base portion 610 surrounds the first cable 20A and is fixed to the connector base 510. The outer sheath 23 is removed from the tip of the first cable 20A at a portion corresponding to the base portion 610. The base portion 610 surrounds the outer conductor 22 exposed by removing the outer sheath 23. There are no particular limitations on the shape surrounding the outer conductor 22. The base portion 610 may surround the outer conductor 22 in a circular shape or a polygonal shape. As an example, the base portion 610 may surround the outer conductor 22 in a rectangular shape. For example, the base portion 610 has a pair of base side walls 611 (first base side walls) and a base connecting wall 612 (first base connecting wall). The pair of base side walls 611 face each other along the arrangement direction D21. The outer conductor 22 of the first cable 20A is located between the pair of base side walls 611 of the first shell 600A. The base connecting wall 612 extends parallel to the opposing surface 511 and connects the pair of base side walls 611 together.

[0096] The end portion 620 extends forward from the base portion 610 along the fitting direction D22 to surround the first housing 520A. There are no particular limitations on the shape surrounding the first housing 520A. The end portion 620 may surround the first housing 520A in a circular shape or a polygonal shape. As an example, the end portion 620 may surround the first housing 520A in a rectangular shape. For example, the end portion 620 has a pair of end side walls 621 (first end side walls) and an end connecting wall 622 (first end connecting wall). The pair of end side walls 621 are continuous with the pair of base side walls 611. The end connecting wall 622 is continuous with the base connecting wall 612 and connects the pair of end side walls 621.

[0097] A gap 623 between a pair of end coupling walls 622 is smaller than a gap 614 between a pair of base side walls 611 (see FIG. 12 ). The outer conductor 22 of the first cable 20A is present in the base portion 610, whereas the outer conductor 22 of the first cable 20A is not present in the end portion 620. By making the gap 623 at the position where the outer conductor 22 is not present smaller than the gap 614 at the position where the outer conductor 22 is present, the uniformity of the positional relationship between the pair of signal conductors 24 and the metal body at ground potential that surrounds the pair of signal conductors 24 can be improved, and the signal transmission characteristics can be further improved.

[0098] Returning to FIG. 11 , the end portion 620A fits into the upper portion of the first shell 300A. For example, the pair of end side walls 621 overlap the inner surfaces of the pair of side walls 310 of the first shell 300A, respectively, and the end connecting wall 622 overlaps the inner surface of the opposing wall 330. When the end portion 620A fits into the first shell 300A in this manner, the enclosure of the first housing 520A by the end portion 620A is complemented by the first shell 300A. For example, the lower portion of the first housing 520A that is not enclosed by the end portion 620A is enclosed by the first shell 300A.

[0099] Additionally, the surrounding of the pair of first signal contacts 200A by the first shell 300A is complemented by the end portion 620A. For example, the break in the surrounding caused by the shell slit 333 is complemented by the end connecting wall portion 622 of the end portion 620A (see FIG. 4).

[0100] Each of the pair of end sidewall portions 621 may have a resilient contact portion 624 (first resilient contact portion) (see FIGS. 12 and 13). The resilient contact portion 624 approaches the first housing 520A when an external force is applied, and moves away from the first housing 520A when the external force is removed. The resilient contact portions 624 of the pair of end sidewall portions 621 respectively contact the inner surfaces of the pair of sidewall portions 310 of the first shell 300A. This allows the first shell 300A to further firmly complement the enclosing of the first housing 520A by the end portion 620A.

[0101] The end connection wall portion 622 may have a contact portion 625. The contact portion 625 extends along the fitting direction D12 at an intermediate position between the pair of end side wall portions 621 and bulges upward. The width of the end connection wall portion 622 is greater than the width of the shell slit 333 of the first shell 300A. Therefore, the end connection wall portion 622 spans the shell slit 333 and contacts both the portion 331 and the portion 332 of the opposing wall portion 330. This further strengthens the enclosing of the pair of first signal contacts 200A by the first shell 300A by the end portion 620A.

[0102] The second shell 600B is fixed to the connector base 510 so as to surround the second housing 520B around an axis along the fitting direction D22. For example, the second shell 600B has a base portion 610 (second base portion) and an end portion 620 (second end portion), similar to the first shell 600A.

[0103] The base portion 610 surrounds the second cable 20B and is fixed to the connector base 510. Similar to the base portion 610 of the first shell 600A, the base portion 610 of the second shell 600B has a pair of base side walls 611 (second base side walls) and a base connecting wall 612 (second base connecting wall). At the tip of the second cable 20B, the outer sheath 23 is removed from a portion corresponding to the base portion 610. The base portion 610 surrounds the outer conductor 22 exposed by removing the outer sheath 23.

[0104] The end portion 620 extends forward from the base portion 610 along the fitting direction D22 to surround the second housing 520B. Similar to the base portion 610 of the first shell 600A, the end portion 620 of the second shell 600B has a pair of end side walls 621 (second end side walls) and an end connecting wall 622 (second end connecting wall).

[0105] The end portion 620B fits into an upper portion of the second shell 300B. For example, the pair of end side walls 621 overlap the inner surfaces of the pair of side walls 310 of the second shell 300B, respectively, and the end connecting wall 622 overlaps the inner surface of the opposing wall 330. In this way, when the end portion 620B fits into the second shell 300B, the enclosure of the second housing 520B by the end portion 620B is complemented by the second shell 300B. For example, the lower portion of the second housing 520B that is not enclosed by the end portion 620B is enclosed by the second shell 300B.

[0106] Additionally, the surrounding of the pair of second signal contacts 200B by the second shell 300B is complemented by the end portion 620B. For example, the break in the surrounding caused by the shell slit 333 is complemented by the end connecting wall portion 622 of the end portion 620B.

[0107] Similar to the pair of end side walls 621 of the first shell 600A, each of the pair of end side walls 621 of the second shell 600B may have a resilient contact portion 624 (second resilient contact portion). Similar to the end connecting wall portion 622 of the first shell 600A, the end connecting wall portion 622 of the second shell 600B may have a contact portion 625.

[0108] The connector base 510 may have a conductive base plate 512 and an insulating base housing 513. The base plate 512 extends along the opposing surface and supports the multiple cables 20 from below. The base housing 513 holds the base plate 512, a first housing 520A, and a second housing 520B. The base unit 500 is formed by molding the base housing 513 and the multiple housings 520 with a resin material by insert molding, with the base plate 512 and the multiple signal contacts 530 in place.

[0109] The base portion 610 of the first shell 600A surrounds the outer conductor 22 of the first cable 20A with a pair of base side walls 611, a base connecting wall 612, and a base plate 512, and is fixed to the base plate 512. The base portion 610 of the second shell 600B surrounds the outer conductor 22 of the second cable 20B with a pair of base side walls 611, a base connecting wall 612, and a base plate 512, and is fixed to the base plate 512. The base plate 512 electrically connects the base portion 610 of the first shell 600A to the base portion 610 of the second shell 600B.

[0110] In the base portion 610 of the first shell 600A, the outer conductor 22 of the first cable 20A is electrically connected to the base plate 512. For example, the outer conductor 22 is fixed to the base plate 512 by soldering or the like. In the base portion 610 of the second shell 600B, the outer conductor 22 of the second cable 20B is electrically connected to the base plate 512. For example, the outer conductor 22 is fixed to the base plate 512 by soldering or the like.

[0111] The base plate 512 may have a plurality of fixing holes 514 corresponding to the plurality of cables 20, respectively. The plurality of fixing holes 514 are aligned along the arrangement direction D11 and penetrate the base plate 512 in the up-down direction perpendicular to the facing surface 511. Each of the plurality of fixing holes 514 exposes the outer conductor 22 of the corresponding cable 20 downward.

[0112] The multiple fixing holes 514 include a first fixing hole 514A corresponding to the first cable 20A and a second fixing hole 514B corresponding to the second cable 20B. The first fixing hole 514A exposes the outer conductor 22 of the first cable 20A downward, and the second fixing hole 514B exposes the outer conductor 22 of the second cable 20B downward.

[0113] As described above for the first shell 600A and the second shell 600B, each of the multiple shells 600 has a pair of base sidewall portions 611, so the second connector 3 has multiple pairs of base sidewall portions 611 aligned along the arrangement direction D21. In contrast, the base plate 512 may have multiple pairs of shell fixing holes 515 corresponding to the multiple pairs of base sidewall portions 611, respectively.

[0114] The multiple fixing holes 514 and the multiple pairs of shell fixing holes 515 are aligned in a row along the arrangement direction D21. In this arrangement, one fixing hole 514 is disposed between each pair of shell fixing holes 515. Each pair of shell fixing holes 515 penetrates the base plate 512 in the up-down direction, exposing a corresponding pair of base side wall portions 611 downward. As a result, the multiple pairs of base side wall portions 611 and the outer conductors 22 of the multiple cables 20 are exposed downward while aligned in a row. Therefore, the multiple pairs of base side wall portions 611 and the outer conductors 22 of the multiple cables 20 can be fixed to the base plate 512 from below together by soldering or the like.

[0115] The multiple pairs of shell fixing holes 515 include a pair of first shell fixing holes 515A corresponding to the pair of base side wall portions 611 of the first shell 600A, and a pair of second shell fixing holes 515B corresponding to the pair of base side wall portions 611 of the second shell 600B. The first fixing hole 514A is located between the pair of first shell fixing holes 515A, and the second fixing hole 514B is located between the pair of second shell fixing holes 515B.

[0116] Each of the pairs of base sidewalls 611 may have a fixing piece 613 inserted into the corresponding shell fixing hole 515. For example, each of the pair of base sidewalls 611 of the first shell 600A may have a fixing piece 613 (first fixing piece) inserted into the corresponding first shell fixing hole 515A. Each of the pair of base sidewalls 611 of the second shell 600B may have a fixing piece 613 (second fixing piece) inserted into the corresponding second shell fixing hole 515B. This allows the multiple shells 600 to be positioned and temporarily fixed to the base plate 512 before fixing by soldering or the like, thereby improving the workability when fixing the multiple pairs of base sidewalls 611 and the outer conductors 22 of the multiple cables 20 to the base plate 512. The fixing pieces 613 are fixed to the base plate 512 by soldering or the like while inserted into the corresponding shell fixing holes 515.

[0117] Returning to FIG. 10 , the second connector 3 may further include an insulating outer housing 700. The outer housing 700 accommodates a connector base 510 to which multiple shells 600, including a first shell 600A and a second shell 600B, are fixed. The outer housing 700 may have a front wall 710 perpendicular to the mating direction D22. The front wall 710 may have multiple openings 711 corresponding to the multiple housings 520, respectively. Each of the multiple housings 520 protrudes forward from the outer housing 700 through the corresponding opening 711 while being surrounded by the shell 600.

[0118] The multiple openings 711 include a first opening 711A corresponding to the first housing 520A and a second opening 711B corresponding to the second housing 520B. The first housing 520A, surrounded by the first shell 600A, protrudes forward from the outer housing 700 through the first opening 711A. The second housing 520B, surrounded by the second shell 600B, protrudes forward from the outer housing 700 through the second opening 711B.

[0119] The second connector 3 may further include an insulating separator 730 fixed to the outer housing 700 and regulating spacing between the multiple cables 20, including the spacing between the first cable 20A and the second cable 20B. The separator 730 is located behind the connector base 510 and holds the multiple cables 20 from outside the outer sheath 23. The connector base 510 is disposed between the front wall 710 and the separator 730. The separator 730 has multiple openings 731 corresponding to the multiple cables 20 (see FIGS. 2 and 3). The multiple openings 731 are aligned along the arrangement direction D21. Each of the multiple openings 731 penetrates the separator 730 along the mating direction D22. Each of the multiple cables 20 is held in its corresponding opening 731. The separator 730 appropriately maintains the distance between the cables 20, further improving signal transmission characteristics. Furthermore, the separator 730 can also increase the strength with which the multiple cables 20 are fixed to the second connector 3.

[0120] The separator 730 is formed by two-color resin molding with the base unit 500, the shells 600, and the outer housing 700 attached to the ends of the cables 20. The separator 730 may be formed by resin sealing using potting. The base unit 500, the shells 600, and the outer housing 700 may be attached to the ends of the cables 20 with a pre-molded separator 730 attached to the cables 20. In this case, the separator 730 may be molded into upper and lower members, each with the openings 731 at the center, and the upper and lower members may be combined to sandwich the cables 20. The separator 730 may be attached to the base unit 500 or may be molded integrally with the base unit 500. This further increases the fixing strength of the cables 20 to the second connector 3.

[0121] The second connector 3 may further include a locking member 800. The locking member 800 prevents the second connector 3 from being disengaged from the first connector 2. The locking member 800 has a pair of locking portions 810 and a locking knob 820. The pair of locking portions 810 are held by the outer housing 700 so as to correspond to the plurality of locking openings 411 (see FIG. 5 ) of the first connector 2, respectively. The outer housing 700 further has, at both ends in the arrangement direction D11, a pair of lock accommodating portions 720 that open upward and backward, and a pair of hold bars 721 that correspond to the pair of lock accommodating portions 720, respectively. The pair of locking portions 810 are respectively accommodated in the pair of lock accommodating portions 720. Each of the pair of hold bars 721 is positioned above the rear end of the corresponding lock accommodating portion 720, and holds the locking portion 810 in the lock accommodating portion 720.

[0122] Each of the pair of locking sections 810 has a lock base 811, a lock plate 812, and an elastic connecting portion 813. The lock base 811 extends along the fitting direction D22 and contacts the bottom surface of the lock accommodating portion 720. The lock plate 812 extends along the fitting direction D22 at a position away from the bottom surface of the lock accommodating portion 720 and faces the lock base 811 in the up-down direction. A lock claw 814 that engages with the lock opening 411 of the first connector 2 is formed on the upper surface of the lock plate 812. The elastic connecting portion 813 connects the front end of the lock base 811 to the front end of the lock plate 812 so as to enable elastic displacement of the lock claw 814 in the up-down direction.

[0123] The locking section 810 can be switched between a locked state in which the locking claws 814 engage with the locking openings 411 and a released state in which the locking claws 814 do not engage with the locking openings 411. For example, when an external force is applied from above to the locking plate 812 to bring the locking plate 812 closer to the locking base 811, the locking claws 814 descend below the main plate 410, entering the released state. In this state, the second connector 3 is mated with the first connector 2, the locking claws 814 are positioned below the locking openings 411, the external force on the locking plate 812 is removed, and the locking plate 812 is elastically restored in a direction away from the locking base 811, whereby the locking claws 814 are positioned in the locking openings 411. As a result, the locking claws 814 engage with the inner periphery of the locking openings 411, and the released state is switched to the locked state. An external force is again applied from above to the lock plate 812, causing the lock plate 812 to approach the lock base 811 and lowering the lock claw 814, thereby switching the locked state back to the released state.

[0124] The lock knob 820 is an operating part for applying an external force to the lock plates 812 of the pair of locking parts 810 simultaneously to switch the locked state to the unlocked state. The lock knob 820 extends along the arrangement direction D21 to connect the lock plates 812 of the pair of locking parts 810, and protrudes rearward so as to hang over the multiple cables 20. By pressing the lock knob 820 down toward the multiple cables 20, an external force from above is applied to the lock plates 812 of the pair of locking parts 810 simultaneously, switching the locked state to the unlocked state. The locking member 800 is formed by stamping and bending a thin metal plate material, for example.

[0125] The pair of lock accommodating portions 720 are provided at both ends of the outer housing 700 in the arrangement direction D21, so that when viewed from the front, the multiple housings 520 are disposed between the pair of locking portions 810. By arranging the pair of locking portions 810 in positions that do not overlap with the multiple housings 520, it is possible to achieve both a reliable connection of the second connector 3 to the first connector 2 and a low profile for the connector system 1.

[0126] [Second connector assembly procedure] Next, as an example of a method for assembling a connector, the procedure for assembling the second connector 3 will be illustrated. This procedure includes: aligning the outer periphery of the first cable 20A against the opposing surface 511 and connecting the signal conductor 24 of the first cable 20A to the first signal contact 530A; aligning the outer periphery of the second cable 20B against the opposing surface 511 and connecting the signal conductor 24 of the second cable 20B to the second signal contact 530B; positioning the first shell 600A to surround the first housing 520A around an axis along the mating direction D22 with the signal conductor 24 of the first cable 20A connected to the first signal contact 530A; fixing the first shell 600A to the connector base 510; positioning the second shell 600B to surround the second housing 520B around an axis along the mating direction D22 with the signal conductor 24 of the second cable 20B connected to the second signal contact 530B; and fixing the second shell 600B to the connector base 510.

[0127] The connection of the signal conductors 24 of the first cable 20A to the first signal contact 530A and the connection of the signal conductors 24 of the second cable 20B to the second signal contact 530B may be performed simultaneously. The fixing of the first shell 600A to the connector base 510 and the fixing of the second shell 600B to the connector base 510 may be performed simultaneously.

[0128] The assembly procedure for the second connector 3 may further include housing the connector base 510, to which the first shell 600A and the second shell 600B are fixed, in an insulating outer housing 700.

[0129] Fixing the first shell 600A to the connector base 510 may include soldering the first shell 600A to the base plate 512 through the first shell fixing hole 515A and soldering the outer conductor 22 of the first cable 20A to the base plate 512 through the first fixing hole 514A, and fixing the second shell 600B to the connector base 510 may include soldering the second shell 600B to the base plate 512 through the second shell fixing hole 515B and soldering the outer conductor 22 of the second cable 20B to the base plate 512 through the second shell fixing hole 515B.

[0130] The soldering of the first shell 600A to the base plate 512, the soldering of the outer conductor 22 of the first cable 20A to the base plate 512, the soldering of the second shell 600B to the base plate 512, and the soldering of the outer conductor 22 of the second cable 20B to the base plate 512 may be performed simultaneously.

[0131] 14 to 17, an example of an assembly procedure will be described below. As shown in Fig. 14, first, a plurality of cables 20, each processed so that the exposed portions of the signal conductors 24 of a pair of electric wires 21 and the exposed portions of the outer conductors 22 are aligned in order from the tip, are arranged on the base unit 500 so as to be aligned along the arrangement direction D21. At this time, the signal conductors 24 of each of the plurality of cables 20 are brought into contact with the corresponding first signal contacts 530A, and the outer conductors 22 of each of the plurality of cables 20 are exposed downward from the corresponding fixing holes 514. In this state, each signal conductor 24 is connected to the first signal contact 530A by a solid-state joining method such as soldering or ultrasonic bonding.

[0132] 15, each of the multiple shells 600 is arranged to surround the corresponding first housing 520A. In this state, soldering is performed from below the base plate 512 through the multiple shell fixing holes 515 and the multiple fixing holes 514 to fix the first cable 20A of the multiple cables 20 and the multiple shells 600 to the base plate 512.

[0133] Next, the base unit 500 to which the multiple shells 600 are fixed is inserted into the outer housing 700 from the rear, causing the multiple housings 520 to protrude forward from the multiple openings 711. Next, as shown in FIGS. 16 and 17, the separator 730 is formed by two-color resin molding. Finally, the locking member 800 is attached to the outer housing 700. This completes the assembly of the second connector 3.

[0134] [Effects of the embodiment] As described above, the connector (second connector 3) is a connector to be connected to a first cable 20A having a first signal conductor 24 and a second cable 20B having a second signal conductor 24, and includes a connector base 510 having an opposing surface 511 that faces the outer periphery of the first cable 20A and the outer periphery of the second cable 20B, and insulating first and second housings 520A and 520B that are held by the connector base 510, are aligned along an arrangement direction D21 parallel to the opposing surface 511, and protrude in the same direction from the connector base 510 along a mating direction D22 perpendicular to the arrangement direction D21. The connector includes a base unit 500 having a first signal contact 530A held in a first housing 520A and connected to a first signal conductor 24, and a second signal contact 530B held in a second housing 520B and connected to a second signal conductor 24, a conductive first shell 600A fixed to the connector base 510 so as to surround the first housing 520A about an axis along the mating direction D22, and a conductive second shell 600B fixed to the connector base 510 so as to surround the second housing 520B about an axis along the mating direction D22.

[0135] In order to improve transmission characteristics, it is effective to individually shield the first signal contact 530A corresponding to the first cable 20A and the second signal contact 530B corresponding to the second cable 20B. However, the first shell 600A surrounding the first signal contact 530A may interfere with the work of connecting the first signal conductor 24 to the first signal contact 530A. The second shell 600B surrounding the second signal contact 530B may interfere with the work of connecting the second signal conductor 24 to the second signal contact 530B. In contrast, in this connector, the connector base 510, the first housing 520A, the second housing 520B, the first signal contacts 530A, and the second signal contacts 530B are integrated as the base unit 500, so that after the first cable 20A and the second cable 20B are connected to the base unit 500, the connector can be attached to the cables by the simple task of assembling the first shell 600A and the second shell 600B to the base unit 500. This is therefore effective in achieving both improved signal transmission characteristics and improved ease of attachment to the cables.

[0136] The connector may further include an insulating outer housing 700 that houses the connector base 510 to which the first shell 600A and the second shell 600B are fixed. In this case, by making the outer housing 700 attachable later, the workability of attaching the connector to the cable can be further improved.

[0137] The outer housing 700 has a front wall 710 perpendicular to the mating direction D22, and the front wall 710 has a first opening 711A and a second opening 711B aligned in the arrangement direction D21, and the first housing 520A may protrude from the outer housing 700 through the first opening 711A while surrounded by the first shell 600A, and the second housing 520B may protrude from the outer housing 700 through the second opening 711B while surrounded by the second shell 600B. In this case, the strength of the housing can be improved while allowing the first shell 600A and the second shell 600B to be individually connected to the shells of the mating connector.

[0138] The connector may further include an insulating separator 730 fixed to the outer housing 700 to regulate the distance between the first cable 20A and the second cable 20B, and the connector base 510 may be disposed between the front wall and the separator 730. In this case, by maintaining an appropriate distance between the cables, the signal transmission characteristics can be further improved.

[0139] The first shell 600A may have a first base portion 610 surrounding the first cable 20A and fixed to the connector base 510, and a first end portion 620 extending from the first base portion 610 along the mating direction D22 and surrounding the first housing 520A, while the second shell 600B may have a second base portion 610 surrounding the second cable 20B and fixed to the connector base 510, and a second end portion 620 extending from the second base portion 610 along the mating direction D22 and surrounding the second housing 520B. In this case, the signal transmission characteristics can be further improved.

[0140] The connector base 510 may have a conductive base plate 512 along the opposing surface 511, and an insulating base housing 513 that holds the base plate 512, the first housing 520A, and the second housing 520B, and the base plate 512 may electrically connect the first base portion 610 and the second base portion 610. In this case, by suppressing the potential difference between the first base portion 610 and the second base portion 610, it is possible to further improve the signal transmission characteristics.

[0141] The first base portion 610 may have a pair of first base side walls 611 facing each other along the arrangement direction D21 and a first base connecting wall portion 612 connecting the pair of first base side walls 611, and surround the first cable 20A with the pair of first base side walls 611, the first base connecting wall portion 612, and the base plate 512, while the second base portion 610 may have a pair of second base side walls 611 facing each other along the arrangement direction D21 and a second base connecting wall portion 612 connecting the pair of second base side walls 611, and surround the second cable 20B with the pair of second base side walls 611, the second base connecting wall portion 612, and the base plate 512. In this case, the shielding properties of the first cable 20A by the first base portion 610 and the shielding properties of the second cable 20B by the second base portion 610 are both improved. This makes it possible to further improve the signal transmission characteristics.

[0142] The first end portion 620 may have a pair of first end side walls 621 continuing to the pair of first base side walls 611 and a first end connecting wall 622 continuing to the first base connecting wall 612 and connecting the pair of first end side walls 621, and the second end portion 620 may have a pair of second end side walls 621 continuing to the pair of second base side walls 611 and a second end connecting wall 622 continuing to the second base connecting wall 612 and connecting the pair of second end side walls 621. In this case, by leaving the shield facing the first end connecting wall 622 to the mating connector and also leaving the shield facing the second end connecting wall 622 to the mating connector, it is possible to achieve both improved signal transmission characteristics and a thinner connector.

[0143] The first signal contact 530A has a first connection portion 531 and a first contact portion 532 that are aligned in sequence along the protruding direction of the first housing 520A relative to the connector base 510, and the second signal contact 530B has a second connection portion 531 and a second contact portion 532 that are aligned in sequence along the protruding direction of the first housing 520A, and the first housing 520A may hold the first signal contact 530A so that the first connection portion 531 is exposed toward the first end connecting wall portion 622 and the first contact portion 532 is exposed in the opposite direction toward the first end connecting wall portion 622, and the second housing 520B may hold the second signal contact 530B so that the second connection portion 531 is exposed toward the second end connecting wall portion 622 and the second contact portion 532 is exposed in the opposite direction toward the second end connecting wall portion 622. In this case, the first contact portion 532 and the second contact portion 532, which are shielded by the mating connector, are exposed to the outside of the first shell 600A and the second shell 600B, respectively, while the first connection portion 531 and the second connection portion 531, which are not shielded by the mating connector, are surrounded by the first shell 600A and the second shell 600B, respectively, thereby achieving both improved signal transmission characteristics and a thinner connector.

[0144] The distance between the pair of first end sidewalls 621 may be smaller than the distance between the pair of first base sidewalls 611, and the distance between the pair of second end sidewalls 621 may be smaller than the distance between the pair of second base sidewalls 611. In this case, the signal transmission characteristics can be further improved.

[0145] Each of the pair of first end sidewalls 621 may have a first resilient contact portion 532 that approaches the first housing 520A when an external force is applied and moves away from the first housing 520A when the external force is removed, and each of the pair of second end sidewalls 621 may have a second resilient contact portion 532 that approaches the second housing 520B when an external force is applied and moves away from the second housing 520B when the external force is removed. In this case, the electrical connection of the first shell 600A to the mating first shell 600A of the mating connector is strengthened, and the electrical connection of the second shell 600B to the mating second shell 600B of the mating connector is strengthened. This further improves signal transmission characteristics.

[0146] The first cable 20A may further include a first outer conductor 22 surrounding the first signal conductor 24, and the second cable 20B may further include a second outer conductor 22 surrounding the second signal conductor 24, and the base plate 512 may have a first fixing hole 514A corresponding to the first outer conductor 22 and a second fixing hole 514B corresponding to the second outer conductor 22. In this case, it is possible to further improve the signal transmission characteristics and the ease of installation.

[0147] The base plate 512 has a pair of first shell fastening holes 515A corresponding to the pair of first base sidewalls 611, respectively, and a pair of second shell fastening holes 515B corresponding to the pair of second base sidewalls 611, each of the pair of first base sidewalls 611 having a first fastening piece 613 inserted into the corresponding first shell fastening hole 515A, each of the pair of second base sidewalls 611 having a second fastening piece 613 inserted into the corresponding second shell fastening hole 515B, and the first fastening hole 514A may be located between the pair of first shell fastening holes 515A and the second fastening hole 514B may be located between the pair of second shell fastening holes 515B. In this case, it is possible to achieve further improvements in signal transmission characteristics and further improvements in installation workability.

[0148] An assembly method according to another aspect of the present disclosure includes: placing an outer periphery of a first cable 20A against the opposing surface 511 of a base unit 500 having a connector base 510 having an opposing surface 511; insulating first and second housings 520A and 520B arranged along an arrangement direction D21 parallel to the opposing surface 511 and protruding from the connector base 510 along a first direction parallel to the opposing surface 511 and perpendicular to the arrangement direction D21; first signal contacts 530A held in the first housing 520A; and second signal contacts 530B held in the second housing 520B; The method includes: facing the first cable (20B) and connecting the second signal conductor (24) of the second cable (20B) to the second signal contact (530B); with the first signal conductor (24) connected to the first signal contact (530A), arranging a conductive first shell (600A) to surround the first housing (520A) around an axis parallel to the opposing surface (511) and perpendicular to the arrangement direction (D21); and fixing the first shell (600A) to the connector base (510); with the second signal conductor (24) connected to the second signal contact (530B), arranging a conductive second shell (600B) to surround the second housing (520B) around an axis parallel to the opposing surface (511) and perpendicular to the arrangement direction (D21); and fixing the second shell (600B) to the connector base (510).

[0149] The method may further include housing the connector base 510, to which the first shell 600A and the second shell 600B are fixed, in an insulating outer housing 700.

[0150] The connector base 510 has a conductive base plate 512 along an opposing surface 511, and an insulating base housing 513 that holds the base plate 512, the first housing 520A, and the second housing 520B. The base plate 512 has first shell fixing holes 515A and 514A that are aligned along the arrangement direction D21, and second shell fixing holes 515B and 514B that are aligned along the arrangement direction. Fixing the first shell 600A to the connector base 510 is achieved by the first shell fixing holes 515A and 514B. and soldering the first outer conductor 22 of the first cable 20A to the base plate 512 through the first fixing hole 514A, and fixing the second shell 600B to the connector base 510 may include soldering the second shell 600B to the base plate 512 through the second shell fixing hole 515B and soldering the second outer conductor 22 of the second cable 20B to the base plate 512 through the second fixing hole 514B.

[0151] Although the embodiments have been described above, the present invention is not necessarily limited to the exemplified embodiments, and can be modified as appropriate within the scope of the gist thereof. [Explanation of symbols]

[0152] 3...second connector, 24...signal conductor, 22...outer conductor, 20A...first cable, 20B...second cable, D21...arrangement direction, D22...mating direction, 500...base unit, 510...connector base, 520A...first housing, 520B...second housing, 530A...first signal contact, 531...connection portion, 532...contact portion, 530B...second signal contact, 600A...first shell, 610...base portion, 611...base side wall portion, 613 ...Fixing piece, 612...base connecting wall portion, 620...end portion, 621...end side wall portion, 622...end connecting wall portion, 600B...second shell, 511...opposing surface, 512...base plate, 513...base housing, 514A...first fixing hole, 514B...second fixing hole, 515A...first shell fixing hole, 515B...second shell fixing hole, 700...outer housing, 710...front wall portion, 711A...first opening, 711B...second opening, 730...separator.

Claims

1. 1. A connector for connecting to a first cable having a first signal conductor and a second cable having a second signal conductor, a connector base having opposing surfaces facing the outer periphery of the first cable and the outer periphery of the second cable; a first conductive signal contact connected to the first signal conductor; a conductive second signal contact aligned with the first signal contact in an arrangement direction parallel to the opposing surface and connected to the second signal conductor; a first insulating housing held by the connector base and holding the first signal contacts; a base unit having an insulating second housing held by the connector base and holding the second signal contacts; a conductive first shell fixed to the connector base so as to surround the first housing around an axis extending in a direction perpendicular to the arrangement direction; a conductive second shell fixed to the connector base so as to surround the second housing about an axis along the orthogonal direction, The connector base includes: a conductive base plate along the opposing surface; an insulating base housing that holds the base plate, the first housing, and the second housing; the base plate electrically connects the first shell and the second shell; The first shell is a pair of first side wall portions facing each other along the arrangement direction; a first connecting wall portion connecting the pair of first side wall portions, the first cable is surrounded by the pair of first side wall portions, the first connecting wall portion, and the base plate; The second shell is a pair of second side wall portions facing each other along the arrangement direction; a second connecting wall portion connecting the pair of second side wall portions, The second cable is surrounded by the pair of second side wall portions, the second connecting wall portion, and the base plate.

2. 2. The connector according to claim 1, further comprising an insulating outer housing that houses the connector base to which the first shell and the second shell are fixed.

3. the outer housing has a front wall portion perpendicular to the orthogonal direction, the front wall portion has a first opening and a second opening that are arranged in the arrangement direction and are separated from each other, the first housing is surrounded by the first shell and protrudes from the outer housing through the first opening; 3. The connector according to claim 2, wherein said second housing protrudes from said outer housing through said second opening while being surrounded by said second shell.

4. an insulating separator fixed to the outer housing and regulating a gap between the first cable and the second cable; The connector of claim 3 , wherein the connector base is disposed between the front wall and the separator.

5. the first signal contact has a first connection portion connected to the first signal conductor and a first contact portion adapted to come into contact with a mating first signal contact of a mating connector; the second signal contact has a second connection portion connected to the second signal conductor and a second contact portion that comes into contact with a mating second signal contact of the mating connector, the first housing holds the first signal contact so that the first connection portion is exposed toward the first connecting wall portion and the first contact portion is exposed in a direction opposite to the direction toward the first connecting wall portion; The connector according to any one of claims 1 to 4, wherein the second housing holds the second signal contact so as to expose the second connection portion toward the second connecting wall portion and expose the second contact portion in a direction opposite to the direction toward the second connecting wall portion.

6. the first shell has a first elastic contact portion that approaches the first housing when an external force is applied and moves away from the first housing when the external force is removed; 6. A connector according to claim 1, wherein the second shell has a second elastic contact portion that approaches the second housing when an external force is applied and moves away from the second housing when the external force is removed.

7. each of the pair of first side wall portions has the first elastic contact portion; 7. The connector according to claim 6, wherein each of said pair of second sidewall portions has said second resilient contact portion.

8. the first cable further includes a first outer conductor surrounding the first signal conductor, and the second cable further includes a second outer conductor surrounding the second signal conductor; 8. The connector according to claim 1, wherein the base plate has a first fixing hole corresponding to the first outer conductor and a second fixing hole corresponding to the second outer conductor.

9. the base plate has a pair of first shell fixing holes corresponding to the pair of first side wall portions, respectively, and a pair of second shell fixing holes corresponding to the pair of second side wall portions, respectively; Each of the pair of first side wall portions has a first fixing piece inserted into a corresponding first shell fixing hole, Each of the pair of second side wall portions has a second fixing piece inserted into a corresponding second shell fixing hole, 9. The connector of claim 8, wherein the first fixing hole is located between the pair of first shell fixing holes and the second fixing hole is located between the pair of second shell fixing holes.

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