JP6080922B2 - Electrical connector - Google Patents

Description

  The present invention relates to an electrical connector.

  As an electrical connector attached to a communication cable, for example, an RJ plug connector described in Patent Document 1 below is known.

  In Patent Document 1, “a plug for a shielded data cable, that is, this plug includes a conductive housing in which a first shell (1) and a second shell (2) are combined, and a plug contact (302 ), A printed wiring board (3), and a mounting component (5). The printed wiring board can be inserted into the housing (1, 2). The plug contact (302) and the insulating displacement contact (303, 304) are supported and electrically connected to each other, and the data cable core can be inserted into the mounting part. A plug that can be inserted into the printed wiring board (3) because it is in contact with the insulation displacement contact (303, 304). The printed wiring board (3) can be inserted into the first shell (1). In addition, the insulating displacement contact (303, 304) and the insulating displacement contact (303, 304) are lined up with a difference in position, being electrically insulated from the bottom surface (101) of the first shell by the film (301). However, it is arranged in two rows, the height of the insulation displacement contact (303) in the rear row is lower than the insulation displacement contact (304) in the front row as viewed in the insertion direction, and the mounting component (5) is The wire is received by two planes whose core ends are stepped and the protruding core is in contact with the insulation displacement contact (304) in the front row. " Is described.

Special table 2009-528654

  Incidentally, in an electrical connector attached to a communication cable such as a LAN (Local Area Network) cable, it is desired to reduce crosstalk from the viewpoint of communication quality. Therefore, it is important to suppress crosstalk between the wiring board and the cable when the cable is attached to the electrical connector.

  An object of the present invention is to provide an electrical connector capable of suppressing crosstalk.

  One aspect of the present invention is an electrical connector attached to a cable, and includes a main body portion and a cover portion, and the main body portion and the cover portion define a space for housing the cable, Has an upper housing, a lower housing, a wiring board disposed between the upper housing and the lower housing, and a shield member disposed across the upper housing and the lower housing, It has a contact for making electrical connection with the cable, a connection terminal for making electrical connection with the mating connector, and an electric wire for electrically connecting the contact and the connection terminal.

  According to the present invention, the shield member is disposed so as to sandwich the upper housing and the lower housing of the main body that sandwich the wiring board. Therefore, when the cable is accommodated in the space defined by the main body portion and the cover portion, electromagnetic interference between the conductor of the wiring board and the cable can be suppressed by the shield member, and the space between the wiring board and the cable can be suppressed. Crosstalk can be suppressed.

(A) is a perspective view which shows the electrical connector which concerns on one Embodiment from upper direction, (b) is a perspective view which shows the electrical connector which concerns on one Embodiment from the downward direction. (A) is the figure which looked at the electrical connector shown in FIG. 1 from the top, (b) is the figure which looked at the electrical connector shown in FIG. 1 from the side. It is a perspective view which shows the state in which the cable was attached to the electrical connector shown in FIG. It is a perspective view which shows a module and a case. It is a disassembled perspective view of the electrical connector shown in FIG. It is a perspective view explaining attachment of a clamp part. It is a perspective view which shows a main-body part. It is a disassembled perspective view of the main-body part shown in FIG. It is a perspective view which shows a wiring board. It is a figure which shows the state by which the cable was attached to the main-body part. It is a disassembled perspective view of a cover part. It is a perspective view which shows a wiring board and a ground structure. It is a figure which shows a ground structure. It is the figure which looked at the ground structure shown to Fig.13 (a) from the front. (A) is a perspective view which shows an arm part, (b) is a perspective view which shows a case part. It is sectional drawing of the electrical connector shown in FIG. It is a figure which shows the assembly procedure of the main-body part in a module. It is a figure which shows the assembly procedure of the cover part in a module. It is a figure which shows the procedure for attaching a cable to a cover part. It is a figure which shows the assembly procedure of a main-body part and a case part.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements will be denoted by the same reference numerals, and redundant description will be omitted.

  Fig.1 (a) is a perspective view which shows the electrical connector which concerns on one Embodiment from upper direction, FIG.1 (b) is a perspective view which shows the electrical connector which concerns on one Embodiment from the downward direction. 2A is a view of the electrical connector shown in FIG. 1 as viewed from above, and FIG. 2B is a view of the electrical connector shown in FIG. 1 as viewed from the side. FIG. 3 is a perspective view showing a state where a cable is attached to the electrical connector shown in FIG. FIG. 4 is a perspective view showing the module and the case.

  The electrical connector 1 shown in FIGS. 1 and 2 is an RJ (Registered Jack) -45 connector standardized by, for example, ISO / IEC8877, and is attached to the end of the cable 3. The cable 3 is a communication cable, and a LAN (Local Area Network) cable having a 4-to-8-core twisted pair cable 5 (see FIG. 10) and a shield 7 (see FIG. 10) covering the outer periphery of the entire twisted pair cable 5. It is.

  The electrical connector 1 includes a module 10 and a case 12. FIG. 5 is an exploded perspective view of the electrical connector shown in FIG. FIG. 6 is a perspective view illustrating attachment of the clamp part. As shown in FIGS. 5 and 6, the module 10 includes a main body portion 14, a cover portion 16, and a clamp portion 18. The main body portion 14 and the cover portion 16 define an accommodation space for accommodating the cable 3.

  FIG. 7 is a perspective view showing the main body. FIG. 8 is an exploded perspective view of the main body shown in FIG. The main body 14 includes an upper housing 20, a lower housing 22, a wiring board 28, and a first shield member 30.

  The upper housing 20 is made of an industrial plastic material such as polybutylene terephthalate (PBT) or polyamide (PA). The upper housing 20 includes a housing part 31, a contact holder holding part 33, and a connector part 35. In the upper housing 20, the accommodating portion 31, the contact holding portion 33, and the connector portion 35 are integrally formed by, for example, injection molding.

  The accommodating part 31 is a part which defines the accommodating space S1 in which the twisted pair cable 5 is accommodated. The accommodating portion 31 has a plate shape and has a substantially rectangular shape when viewed from above. One surface (upper surface) 31a of the accommodating portion 31 is a flat surface.

  The contact holding part 33 is a part that holds and fixes a contact 24 described later. The contact holding part 33 is provided along the longitudinal direction of the accommodating part 31 on both sides in the width direction of the accommodating part 31. Specifically, the contact holders 33 are arranged at predetermined intervals (equal intervals) along the longitudinal direction of the accommodating part 31 and are arranged at positions facing each other in the width direction of the accommodating part 31. ing. The upper housing 20 has a plurality (four in this case) of engaging portions 34 a that engage with the cover portion 16 at a position sandwiching the contact holder holding portion 33 disposed along the longitudinal direction of the accommodating portion 31. To 34d are provided.

  The connector part 35 is a part inserted into a plug insertion port (not shown) of a modular jack to be connected. The connector part 35 is provided on one end side (front end side) of the accommodating part 31. The connector part 35 accommodates the connection terminal 26 described later and holds the connection terminal 26. The connector portion 35 is provided with a groove 35a that exposes the connection terminal 26. The grooves 35a extend along the longitudinal direction of the main body 14, and are disposed at a predetermined interval in the width direction. In addition, an arrangement portion 36 in which an engaging portion 40a of the first shield member 30 described later is arranged is provided at the rear end portion of the connector portion 35.

  The lower housing 22 is made of an industrial plastic material such as polybutylene terephthalate or polyamide. The lower housing 22 includes a bottom portion 22a on which the wiring board 28 is placed, and side portions 22b and 22c that rise from both end portions in the width direction of the bottom portion 22a. A housing space S2 for housing the wiring board 28 is defined by the bottom portion 22a and the side surface portions 22b and 22c. Further, as shown in FIG. 5, an arm fixing portion 23 that fixes a distal end portion 74 of an arm portion 70 of the case 12 described later is provided at one end portion (front end portion) of the lower housing 22.

  The wiring board 28 includes a plurality (eight here) of contacts 24, a plurality (eight in this case) of connection terminals 26, and connection conductors (electric wires) that electrically connect the contacts 24 and the connection terminals 26. L. The wiring board 28 is disposed between the upper housing 20 and the lower housing 22. The wiring board 28 is housed in the housing space S <b> 2 of the lower housing 22 and is sandwiched between the upper housing 20 and the lower housing 22. The wiring board 28 is, for example, a printed circuit board (PCB).

  First, the contact 24 and the connection terminal 26 will be described. The contact 24 is made of a conductive member such as metal, and has a bifurcated shape with a slit 24a. When the twisted pair cable 5 is inserted (press-fitted) into the slit 24 a of the contact 24, the twisted pair cable 5 is electrically connected to the contact 24. That is, the contact 24 is cut into the cover of the twisted pair cable 5, and the contact 24 reaches the conductor of the conducting wire of the twisted pair cable 5 and is electrically connected. The contact 24 is held by the contact holding portion 33 and one end (lower end) thereof is inserted into the first insertion hole H 1 of the wiring board 28. As shown in FIG. 8, the contact 24 protrudes from the wiring board 28 in the out-of-plane direction, that is, upward.

  The connection terminal 26 is a portion that conducts electrical connection with each contact of the modular jack that is the mating connector, and is electrically connected to the contact on a one-to-one basis. The connection terminal 26 is disposed on the connector portion 35. The connection terminal 26 has a substantially U shape. One end of the connection terminal 26 is inserted into the second insertion hole H2 of the wiring board 28 and held by the wiring board 28. The connection terminal 26 is disposed along the groove 35a of the connector portion 35, and a portion exposed in the groove 35a is a contact portion.

  FIG. 9 is a perspective view showing a wiring board. As shown in FIG. 9, the wiring board 28 has a substantially rectangular shape and has a predetermined thickness. A plurality of first insertion holes H1 into which one end portions of the contactors 24 are inserted and second insertion holes H2 into which one end portions of the connection terminals 26 are inserted are formed in the wiring board 28 (eight here). Has been. The first insertion holes H <b> 1 are arranged at predetermined intervals along the longitudinal direction at both ends in the width direction of the wiring board 28. The first insertion hole H1 is a through hole, and the inner surface of the first insertion hole H1 is plated.

  The second insertion holes H2 are arranged in a staggered manner at one end in the longitudinal direction of the wiring board 28. The second insertion hole H2 is a through hole, and the inner surface of the second insertion hole H2 is plated. The predetermined first insertion hole H <b> 1 and the predetermined second insertion hole H <b> 2 are electrically connected to each other by a connecting conductor L. The contact 24 and the connection terminal 26 are electrically connected by the connection conductor L.

  The first shield member 30 is a member that suppresses crosstalk between the twisted pair cable 5 of the cable 3 and the connection conductor L of the wiring board 28. The first shield member 30 is made of, for example, SUS301. The first shield member 30 includes a first portion disposed between the contact 24 disposed on the upper side of the upper housing 20 and opposed thereto, and a second portion disposed on the lower side of the lower housing 22. ing. That is, the first shield member 30 includes an upper portion (first portion) 40, a lower portion (second portion) 42, and a connecting portion 44 that connects the upper portion 40 and the lower portion 42. In the first shield member 30, an upper portion 40, a lower portion 42, and a connecting portion 44 are integrally formed of sheet metal. The first shield member 30 is attached to the upper housing 20 and the lower housing 22 so as to sandwich the upper housing 20 and the lower housing 22.

  The upper portion 40 is a flat plate-like member and has a thickness in the range of, for example, 0.1 mm to 0.6 mm. The upper portion 40 has a width dimension substantially equal to the width dimension of the accommodating portion 31 of the upper housing 20. The upper portion 40 is disposed so as to face the housing portion 31 so as to cover the housing portion 31 of the upper housing 20 between the opposing contacts 24, and makes surface contact with the upper surface 31 a of the housing portion 31. One end of the upper portion 40 is provided with an engaging portion 40a that engages with an engaging portion 54a of a second shield member 54 described later. The engaging part 40 a is arranged in the arrangement part 36 of the upper housing 20.

  The lower part 42 has a substantially U-shaped cross section. The lower portion 42 is disposed on the bottom surface 22aA side of the lower housing 22, and is in surface contact with the bottom surface 22aA and covers the outer surfaces of the side surface portions 22b and 22c of the lower housing 22. The width dimension of the lower part 42 is larger than the width dimension of the upper part 40. The upper portion 40 and the lower portion 42 are connected by being folded back by a connecting portion 44, and are spaced apart from each other at a predetermined interval in the vertical direction and are arranged to face each other substantially in parallel. The connecting portion 44 has a width dimension substantially equal to that of the upper portion 40.

  FIG. 11 is an exploded perspective view of the cover portion. As shown in FIG. 11, the cover portion 16 includes a wire guide portion 50, a cable receiving portion 52, and a second shield member 54. The wire guide portion 50 is made of an industrial plastic material such as polybutylene terephthalate or polyamide. The wire guide part 50 has side surface parts 50a and 50b that define an accommodation space S3 in which the twisted pair cable 5 is accommodated. The side surface portions 50a and 50b are arranged to face each other, and a guide groove 51 in which the twisted pair cable 5 of the cable 3 is disposed is formed on the side surface portions 50a and 50b. The guide grooves 51 are provided at predetermined intervals along the longitudinal direction of the side surface portions 50a and 50b. The guide groove 51 is provided at a position where the contact 24 is disposed, that is, a position corresponding to the contact holding portion 33 of the upper housing 20.

  An arrangement portion 56 in which the cable receiving portion 52 is arranged is provided at one end portion in the longitudinal direction of the wire guide portion 50. The arrangement portion 56 is provided with a locking portion 58 that locks the clamp portion 18. The locking portions 58 are disposed to face each other in the longitudinal direction of the wire guide portion 50 and are disposed to face each other in the width direction. That is, the locking portions 58 are arranged at the four corners of the arrangement portion 56. In the arrangement portion 56, two through holes H3 and H4 are formed at positions corresponding to screw holes 59a and 59b of the cable receiving portion 52 described later. Further, a fitting portion 50 c that fits with an engaging portion 54 a described later of the second shield member 54 is provided at the other end portion in the longitudinal direction of the wire guide portion 50.

  The cable receiving portion 52 has a thickness of about 0.6 mm and is made of a material such as SUS (Steel Use Stainless: stainless steel). The cable receiving part 52 is arranged in the arrangement part 56 of the wire guide part 50 and holds the cable 3 by sandwiching the cable 3 with the clamp part 18. Two screw holes 59a and 59b into which screws N1 and N2 of the clamp part 18 described later are screwed are formed at both ends of the cable receiving part 52. The cable receiving portion 52 is in physical and electrical contact with the shield 7 exposed by removing the covering cover of the cable 3. That is, the shield 7 of the cable 3 and the cable receiving portion 52 have the same potential (ground potential).

  The second shield member 54 has a thickness in the range of 0.1 mm to 0.6 mm, for example, and is made of a material such as SUS. The second shield member 54 is disposed below the wire guide portion 50. An engaging portion 54 a that engages with the engaging portion 40 a of the first shield member 30 is provided at one end of the second shield member 54. The engaging portion 54 a is fitted with the fitting portion 50 c of the wire guide portion 50 and is held by the wire guide portion 50.

  At the other end of the second shield member 54, a pair of contact portions 54b and 54c that are in physical and electrical contact with the cable receiving portion 52 are provided. The contact parts 54 b and 54 c are arranged between the wire guide part 50 and the cable receiving part 52 in the arrangement part 56 of the wire guide part 50. That is, the second shield member 54 is held by the wire guide portion 50 by the contact portions 54 b and 54 c being sandwiched between the wire guide portion 50 and the cable receiving portion 52. The contact portions 54b and 54c are provided with openings K1 and K2 through which the screws N1 and N2 are inserted.

  When the engaging portion 40a of the first shield member 30 and the engaging portion 54a of the second shield member 54 are engaged, the first shield member 30 and the second shield member 54 are physically and electrically connected. The That is, the first shield member 30 and the second shield member 54 have the same potential. Further, the pair of contact portions 54b and 54c of the second shield member 54 and the cable receiving portion 52 are physically and electrically connected. That is, the second shield member 54 and the cable receiving portion 52 have the same potential, and the second shield member 54 and the shield 7 of the cable 3 have the same potential (ground potential).

  The clamp part 18 is a part for fixing the cable 3 to the cover part 16. The clamp part 18 includes a cable clamp part 60 and a plurality of (here, two) screws N1 and N2. Two insertion holes (not shown) through which the screws N1 and N2 are inserted are provided at both ends of the cable clamp portion 60. As shown in FIG. 6, the cable clamp portion 60 is disposed at a position corresponding to the cable receiving portion 52 of the cover portion 16 and is locked and fixed to the locking portion 58 of the cover portion 16. The screws N1 and N2 are screwed into the screw holes 59a and 59b of the cable receiving portion 52 through the through holes H3 and H4 of the wire guide portion 50. The cable 3 is sandwiched between the cable receiving portion 52 and the cable clamp portion 60 and fixed to the module 10.

  In addition, the seal M (refer FIG. 19) is affixed on the cable clamp part 60 in the state before an assembly. In the seal M, an explanatory view of an arrangement position of the twisted pair cable 5, that is, a position where the twisted pair cable 5 is inserted into the contact 24 is described. Thereby, the workability | operativity at the time of inserting the twisted pair cable 5 in the contactor 24 can be aimed at. Further, the screws N1 and N2 are held by the cable clamp portion 60 by the seal M. Therefore, the screws N1 and N2 can be prevented from being lost, and the operation of inserting the screws N1 and N2 into the cable clamp portion 60 can be omitted.

  FIG. 12 is a diagram illustrating a circuit board and a ground structure. FIG. 13 is a diagram showing a ground structure. FIG. 14 is a front view of the ground structure shown in FIG.

  As shown in FIGS. 12-14, the 1st shield member 30, the 2nd shield member 54, and the cable receiving part 52 are electrically connected. Specifically, the first shield member 30 and the second shield member 54 are physically and electrically connected by the engagement portion 40a and the engagement portion 54a being engaged. The second shield member 54 and the cable receiving portion 52 are physically and electrically connected by contacting the contact portions 54 b and 54 c of the second shield member 54 and the cable receiving portion 52.

  With such a configuration, in the electrical connector 1, the first shield member 30, the second shield member 54, and the cable receiving portion 52 have the same potential (ground potential) as the shield 7 of the cable 3 in a state where the cable 3 is attached. Become.

  Subsequently, the case 12 will be described. Fig.15 (a) is a perspective view which shows an arm part, FIG.15 (b) is a perspective view which shows a case part. 16 is a cross-sectional view of the electrical connector shown in FIG.

  As shown in FIGS. 15 and 16, the case 12 has an arm part 70 and a case part 72. The case 12 is made of an industrial plastic material such as polybutylene terephthalate or polyamide. The arm part 70 has flexibility and fixes the module 10 to the case 12 so that attachment or detachment is possible.

  The arm portion 70 includes a distal end portion (second end portion) 74, a proximal end portion (first end portion) 76 opposite to the distal end portion 74, and a connecting portion ( (Central portion) 78. In the arm portion 70, a distal end portion 74, a proximal end portion 76, and a connecting portion 78 are integrally formed.

  The tip portion 74 is provided on one end portion side opposite to the first end portion, and is detachably attached to the exposed portion of the module 10. That is, the tip portion 74 is fixed to the lower housing 22 of the main body 14 in the module 10, that is, the module 10 exposed from the case 12. Specifically, the distal end portion 74 is fitted to the arm fixing portion 23 of the lower housing 22 and is fixed to the lower housing 22. The tip portion 74 is provided with a latch portion 75 to be inserted into the plug insertion port of the modular jack. The latch portion 75 is formed wider than the other portions of the tip portion 74.

  The proximal end portion 76 is provided on the other end side of the module 10 and is detachably attached to the case 12. That is, the base end portion 76 is fixed to the case portion 72. The proximal end portion 76 has a substantially U shape and is formed wider than the distal end portion 74. The proximal end portion 76 has a fixed portion 80 and an opening 82. The fixed portion 80 has a plate shape and is formed wider than other portions of the base end portion 76. The fixed portion 80 is fixed to a fixing portion 92 of the case portion 72 described later.

  The opening 82 is formed along the extending direction of the arm 70. The opening 82 has a substantially rectangular shape, and is provided at the center portion in the width direction of the arm portion 70 in the base end portion 76.

  The connecting portion 78 has a substantially band shape. The connecting portion 78 is formed wider than the tip portion 74. The connecting portion 78 is spaced apart from the case portion 72 with a predetermined interval between the connecting portion 78 and the case portion 72.

  The case part 72 has a hollow substantially rectangular parallelepiped shape. The case portion 72 has a case main body portion 86 that defines an accommodation space S4 (see FIG. 5) in which the module 10 is accommodated. The case main body 86 is provided on the other side of the case main body 86, and an opening 88 into which the module 10 is inserted, and a cable insertion portion 90 provided on one side of the case main body 86 through which the cable 3 is inserted. have. The case portion 72 is provided on one side surface 86 a of the case body portion 86, and a fixing portion 92 that fixes the proximal end portion 76 of the arm portion 70 and a stopper portion that is erected from the one side surface 86 a of the case body portion 86. (Projection) 94.

  The fixing portion 92 fixes the fixed portion 80 of the base end portion 76 in the arm portion 70. The fixing portion 92 is disposed between the first and second portions 92a and 92b and the first and second portions 92a and 92b disposed at both ends in the width direction on one side surface 86a of the case main body 86. And a third portion 92c. The first to third portions 92 a to 92 c define a space about the thickness of the fixed portion 80 between the side surface 86 a of the case main body 86 and the fixed portion 80 of the case main body 86. It is configured to be inserted and sandwiched between one side surface 86a.

  The stopper portion 94 has a substantially columnar shape, and protrudes upward from one side surface 86 a of the case main body portion 86. The stopper portion 94 is disposed on the one side surface 86a of the case main body portion 86 near the rear end portion and at a substantially central portion in the width direction. The stopper portion 94 is located in the opening 82 of the base end portion 76 in the arm portion 70. The stopper portion 94 is a portion that restricts the bending of the arm portion 70, and restricts the amount of bending (movement) of the connecting portion 78 so that the connecting portion 78 is not pressed downward (case 12 side) by a predetermined amount or more. That is, the stopper portion 94 restricts the base end portion 76 from bending excessively.

  As described above, in the case 12, when the arm portion 70 is pressed, the connecting portion 78 is not pressed downward by a certain amount or more by the stopper portion 94. Thereby, it is possible to prevent an excessive load (displacement) from being applied to the proximal end portion 76 of the arm portion 70. Therefore, the base end portion 76 of the arm portion 70 can be prevented from being damaged.

  One end (rear side) of the module 10 is accommodated in the case body 86 of the case 12, and the other end (front side) is exposed to the outside of the case body 86. Specifically, in the module 10, the connector portion 35 of the main body portion 14 is exposed in the case 12, and the clamp portion 18 is accommodated in the case main body portion 86. That is, the clamp portion 18 is disposed at a position adjacent to the other end portion side in the module 10.

  Then, the assembly method of the electrical connector 1 is demonstrated. FIG. 17 is a diagram showing an assembling procedure of the main body in the module. FIG. 18 is a diagram showing an assembling procedure of the cover portion in the module. FIG. 19 is a diagram illustrating a procedure for attaching the cable to the cover portion. FIG. 20 is a diagram illustrating an assembling procedure of the main body portion and the case portion.

  First, a method for assembling the main body 14 will be described. As shown in FIG. 17A, first, the wiring board 28 is disposed below the upper housing 20. Subsequently, as illustrated in FIG. 17B, the lower housing 22 is disposed below the wiring board 28, and the upper housing 20 and the lower housing 22 are coupled to each other. Subsequently, as shown in FIG. 17C, the first shield member 30 is inserted from one end side so as to sandwich the upper housing 20 and the lower housing 22. Thereby, as shown in FIG.17 (d), the main-body part 14 is assembled.

  Next, the assembly method of the cover part 16 is demonstrated. As shown to Fig.18 (a), the wire guide part 50 is prepared. Subsequently, as shown in FIGS. 18B and 18C, the engaging portion 54 a of the second shield member 54 is attached to the fitting portion 50 c of the wire guide portion 50. Then, as shown in FIG. 18 (d), the cable receiving portion 52 is attached to the arrangement portion 56 of the wire guide portion 50, and the cover portion 16 is assembled.

  Next, a method for attaching the cable 3 to the cover portion 16 will be described. As shown in FIG. 19A, the cover portion 16 is prepared. Subsequently, as illustrated in FIG. 19B, the cable 3 is disposed on the cover portion 16. The cable 3 peels off the cover at the end portion to expose the twisted pair cable 5 and expose the shield 7. Then, the cable 3 is arranged in the cover portion 16 so that the shield 7 is located in the cable receiving portion 52 of the cover portion 16 and the twisted pair cable 5 is located in the accommodating space S3 of the wire guide portion 50.

  Subsequently, as shown in FIG. 19C, the clamp portion 18 is disposed on the cover portion 16. And as shown in FIG.19 (d), the cable clamp part 60 is attached to the cover part 16 with the screws N1 and N2. Thereby, the cable 3 is clamped by the cover part 16 and the clamp part 18, and the cable 3 is fixed to the cover part 16 and the clamp part 18. Thereafter, the twisted pair cable 5 is arranged in the guide groove 51 of the wire guide portion 50 so that the twisted pair cable 5 has the arrangement shown in FIG.

  Next, as shown in FIG. 20A, the main body 14 is prepared. Subsequently, as shown in FIG. 20B, the cover portion 16 holding the cable 3 is attached to the main body portion 14. Specifically, the main body 14 and the cover 16 are integrated. At this time, the engaging portions 34 a to 34 d of the main body portion 14 are engaged with the cover portion 16. Thereby, the main body 14 and the cover 16 are coupled. Further, the twisted pair cable 5 is press-fitted into the contactor 24, and the conductor of the twisted pair cable 5 and the contactor 24 are electrically connected. Then, as shown in FIG. 20C, the excessive twisted pair cable 5 is cut off.

  Finally, the case 12 is inserted into the module 10 assembled as described above from the cable 3 side, and the fixed portion 74a of the distal end portion 74 of the arm portion 70 is attached to the arm fixing portion 23 of the main body portion 14. As described above, the cable 3 is attached to the electrical connector 1.

  As described above, in the present embodiment, the upper portion 40 of the first shield member 30 is disposed between the twisted pair cable 5 of the cable 3 and the wiring board 28. Thereby, the electromagnetic influence between the twisted pair cable 5 of the cable 3 and the connection conducting wire L of the wiring board 28 can be reduced, and the occurrence of electromagnetic interference can be suppressed. Therefore, crosstalk between the twisted pair cable 5 and the connection conductor L can be suppressed. As a result, generation of noise in the electrical connector 1 can be suppressed.

  In addition, the first shield member 30, the second shield member 54, and the cable receiving portion 52 are electrically connected, and the cable receiving portion 52 is electrically connected to the shield 7 of the cable 3. Thereby, since the 1st shield member 30 becomes a grounding potential via the 2nd shield member 54 and the cable receiving part 52, the electric potential is stabilized. Therefore, in the electrical connector 1, the crosstalk can be effectively suppressed by the first shield member 30.

  In the present embodiment, the cable receiving portion 52 has a function of electrically connecting to the shield 7 of the cable 3 and a function of fixing the cable 3. Therefore, the electrical connector 1 can be downsized as compared with the case where the portion for fixing the cable 3 and the portion electrically connected to the shield 7 are provided separately.

  In the present embodiment, both ends of the arm part 70 are fixed in the case 12. This prevents the arm portion 70 from being damaged because it is prevented from being displaced (bent) in the direction opposite to the displacement direction (case 12 side) as in the case where only one end portion is fixed. Is done.

  Further, in the case 12, a stopper portion 94 is formed. Thereby, it is possible to prevent the connecting portion 78 from being excessively bent in the arm portion 70, thereby preventing an excessive load from being applied to the proximal end portion 76. Therefore, damage to the base end portion 76 can be prevented.

  The preferred embodiments of the present invention have been described above. However, the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Electrical connector, 3 ... Cable, 10 ... Module, 12 ... Case, 14 ... Main-body part, 16 ... Cover part, 18 ... Clamp part, 20 ... Upper housing, 22 ... Lower housing, 24 ... Contact, 26 ... Connection Terminals 28 ... Wiring board 30 ... First shield member (shield member) 40 ... Upper part (first part) 42 ... Lower part (second part) 54 ... Second shield member 70 ... Arm part ( Arm), 74 ... distal end portion (first end portion), 76 ... base end portion (second end portion), 78 ... coupling portion (center portion), 94 ... stopper portion (projection portion), L ... connection conductor (electric wire) ).

Claims (3)

An electrical connector,
A case for holding one module side inside and holding the module by exposing the other end side of the module to the outside;
An arm for removably fixing the module to the case;
The arm is
A first end provided on the other end side of the module and detachably attached to an exposed part of the module ;
A second end provided on the one end side opposite to the first end and detachably attached to the case ;
A central portion connecting the first end and the second end,
The case is an electrical connector provided with a protrusion that is disposed on the one end side of the case and restricts movement of the arm toward the case. The module is
The main body,
A cover part;
And a clamp part for fixing the cable to the cover part,
The electrical connector according to claim 1, wherein the clamp portion is disposed on the other end side of the module in the case. A first shield member covering the main body,
A second shield member that covers the cover part,
The electrical connector according to claim 2, wherein the first shield member and the second shield member are electrically connected.