JP6013105B2 - connector - Google Patents

Description

  The present invention relates to a connector to which a flat shield electric wire having a plurality of parallel conductors is connected.

There is known a connector provided at the end of a shielded cable including a coated conductor, a conductive braid surrounding the coated conductor, and an insulating sheath surrounding the braid (see, for example, Patent Document 1). In this type of connector, a shielded cable is used for a cable used for high-speed signal transmission or the like in order to suppress noise emission and prevent the influence of external noise.
The connector 501 shown in FIG. 9 is provided at the end of a shielded cable 509 that includes a covered conductor 503, a conductive braid 505 that surrounds the covered conductor 503, and an insulating sheath 507 that surrounds the braid 505. The connector 501 is formed in a ring shape with a terminal fitting 511 attached to the end portion of the shielded cable 509, and the braid 505 exposed by peeling off the sheath 507 at the end portion of the shielded cable 509 overlaps the sheath 507. A conductive caulking member 515 for caulking the braided folding portion 513 provided by folding back to the inside, covers the end of the shield cable 509 and the terminal fitting 511, and accommodates and fixes the caulking member 515. A shield shell 517.

  In the connector 501, the caulking member 515 is held between the housing 519 and the shield shell 517. The caulking member 515 is brazed (ie, soldered) to the peripheral wall of the shield shell 517 using solder, and is electrically connected and fixed. In the structure in which the caulking member 515 is fixed by soldering to the shield shell 517 and electrically connected, the caulking member 515 can be more firmly fixed inside the shield shell 517 and the caulking member 515 and the shield shell 517 can be more reliably electrically connected. Further, the braid 505 may be directly soldered to the shield shell 517 and connected to the earth circuit.

JP 2010-15708 A

  However, in the conventional connector 501 described above, the braid 505 of the shielded cable 509 is swaged with the crimping member 515, and the shield shell 517 and the crimping member 515 are brought into contact with each other to be connected to the ground circuit. This increases the tact time of the caulking work. Further, when the braid 505 and the shield shell 517 are connected by soldering, a tact time due to soldering is required and workability is poor. In addition to this, there is also a problem that the electrical connection characteristics vary greatly depending on the amount of solder used.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a connector that can stabilize electrical contact while holding a shield portion with a simple structure.

The above object of the present invention is achieved by the following configuration.
(1) A connector to which a flat shielded electric wire having a plurality of parallel conductors is connected,
A housing that accommodates and holds terminals electrically connected to the conductors of the flat shield wire;
An electric wire clamping member mounted and fixed to the housing from the rear end side of the housing;
An electric wire sheath cover attached to and fixed to the electric wire holding member from the rear end side of the electric wire holding member;
With
The flat shielded electric wire includes a front end portion exposing the shield portion of the flat shield electric wire, a bent bottom portion behind the front end portion, and an inverted L-shaped portion behind the bent bottom portion. And is bent into a substantially U shape by an inverted L-shaped portion covered with a sheath portion,
The front end portion is sandwiched along the electric wire width direction by a bus bar plate fixed to the rear end side of the housing and the front end portion of the electric wire holding member, and the bent bottom portion extends along the outer periphery of the electric wire holding member. It extends to the rear end side of the electric wire holding member, and the inverted L-shaped portion is held along the electric wire width direction by the rear end portion of the electric wire holding member and the front end portion of the electric wire sheath cover. Connector.

  According to the connector configured as described in (1) above, the bus bar plate fixed to the housing is brought into contact with the exposed shield portion of the flat shield wire, and the flat shield wire is attached to the housing in that state. By this, the shield part is sandwiched between the bus bar plate. That is, the shield part of the flat shield electric wire is electrically connected to the bus bar plate. As a result, the shield part exposed at the tip of the flat shielded electric wire is held in a simple structure in which the shield part is held along the electric wire width direction between the bus bar plate fixed to the housing and the electric wire holding member. However, electrical contact can also be stabilized.

In addition , according to the connector having the above configuration ( 1 ), the shielded electric wire of the portion covered with the sheath portion behind the tip portion to which the terminal is connected is formed between the rear end portion of the electric wire holding member and the electric wire sheath cover. Therefore, there is no possibility that the tension applied to the flat shielded electric wire acts on the conductor contact portion between the conductor of the shielded electric wire and the terminal. Therefore, the connection reliability of the connector connected to the tip of the flat shield electric wire can be improved.

(2) The connector of the above Paragraph (1), the bus bar plate is provided with indents, the facing surface of the electrical wire clamping member which corresponds to the indented portion of the bus bar plate, the indent the shield portion A rib protrusion to be pressed against the portion is provided along the width direction of the electric wire.

According to the connector having the configuration ( 2 ), when the shield portion of the flat shielded electric wire is sandwiched between the bus bar plate fixed to the housing and the electric wire clamping member, the sandwiched shield portion is stamped from the bus bar plate. The indented portion and the rib protrusion protruding from the opposing surface of the electric wire holding member are pressed and pinched locally with a high contact load. Thereby, the shield part can be reliably brought into electrical contact with the bus bar plate.

  According to the connector of the present invention, electrical contact can be stabilized with a simple structure while holding the shield portion.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

It is the perspective view showing the connector which concerns on one Embodiment of this invention with the other party connector, the circuit board, and the flat shield electric wire. It is a perspective view in the state where the other party connector and connector shown in Drawing 1 were separated. It is a disassembled perspective view of the other party connector and connector shown in FIG. (A) is a front view of the connector shown in FIG. 2, (b) is an AA cross-sectional view of (a), and (c) is an enlarged view of part B of (b). (A) is a side view of the connector shown in FIG. 2, (b) is a cross-sectional view taken along the line C-C of (a), and (c) is an enlarged view of a portion D of (b). (A) is EE sectional drawing of Fig.4 (a), (b) is the F section enlarged view of (a). It is a perspective view of the flat shield electric wire shown in FIG. It is the expansion perspective view which notched a part of electric wire clamping member shown in FIG. It is sectional drawing of the conventional connector.

Embodiments according to the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the wire-side connector 11 that is a connector according to the present embodiment is suitable for use in a connector device 15 having, for example, a board-side connector 13 as a mating connector. The board-side connector 13 of the connector device 15 is mounted on a circuit board housed in a device such as an ECU.

  As shown in FIG. 2, in the board-side connector 13, the plurality of derived board-side terminals 17 are soldered to the conductors of the circuit board 19. The electric wire side connector 11 to be fitted to the board side connector 13 is integrally formed by assembling a plurality of members in the fitting direction.

  As shown in FIG. 3, the electric wire side connector 11 has a portion of the bus bar plate 21 (a U-shaped protruding piece 23 described later) protruding from both sides toward the front in the fitting direction of the electric wire side connector 11. Yes. The bus bar plate 21 is electrically connected to a shield portion 27 (see FIG. 6) of the flat shield electric wire 25 to which the electric wire side connector 11 is attached. The flat shield electric wire 25 includes a plurality of parallel conductors 24. Each conductor 24 becomes a signal line 29 shown in FIG. 7 covered with an inner coating. The plurality of signal lines 29 are covered with a shield portion 27 such as an aluminum foil 31, and the outer periphery thereof is further covered with a sheath portion 33. In the present specification, the board-side connector 13 and the wire-side connector 11 will be described with the respective fitting sides as “front”.

  As shown in FIG. 3, the electric wire side connector 11 has an electric wire side housing 35 which is a housing made of synthetic resin. The electric wire side connector 11 has an electric wire sheath cover 39 attached from the rear to a rear end portion 38 of a strain relief 37 that is an electric wire holding member attached to the electric wire side housing 35. The electric wire sheath cover 39 holds the sheath portion 33 of the flat shielded electric wire 25 held by the shield portion 27 between the strain relief 37 and the electric wire width direction along the electric wire width direction. That is, the electric wire side connector 11 is assembled by laminating the electric wire side housing 35, the bus bar plate 21, the strain relief 37, and the electric wire sheath cover 39 from the lower side to the upper side shown in FIG.

As shown in FIG. 3, the board-side connector 13 has a plurality of board-side terminals 17 mounted on a board-side housing 41 made of synthetic resin by press fitting. In the present embodiment, the board side terminal 17 is a male terminal. Therefore, the electric wire side terminal (terminal) 43 attached to the electric wire side connector 11 becomes a female terminal.
The board-side terminal 17 includes an electrical contact tab 45, a press-fit portion 47, and a lead portion 49 that are connected in a straight line from the front toward the rear. Further, the board-side terminal 17 is inserted into the board terminal insertion opening 51 that opens to the rear of the board-side housing 41 from the electric contact tab 45 side, so that the press-fit portion 47 is regulated and attached to the board-side housing 41. Is done. The mounted board side terminal 17 has a lead portion 49 led out from the rear side of the board side housing 41, and the lead portion 49 is inserted into a through hole 53 (see FIG. 1) of the circuit board 19 and soldered.

  Substrate abutting portions 55 that extend in a direction orthogonal to the direction in which the substrate-side terminals 17 are arranged are integrally formed behind both sides of the substrate-side housing 41. A peg mounting groove 57 extending in the fitting direction is formed on the outer surface of the substrate contact portion 55. The peg mounting groove 57 is inserted with a peg 59 which is a conductive metal fixing bracket formed in a substantially strip shape.

  The peg 59 fixed to the peg mounting groove 57 is inserted into a peg fixing hole 61 (see FIG. 1) drilled in the circuit board 19 and soldered. That is, the peg 59 is fixed to the board-side housing 41, holds and fixes the board-side housing 41 to the circuit board 19, and is electrically connected to the ground circuit 63 (see FIG. 1) of the circuit board 19.

  As shown in FIG. 3, the wire-side connector 11 has the wire-side terminal 43 attached to the wire-side housing 35. The electric wire side terminal 43 attached to the electric wire side housing 35 has an electric contact box portion 69 on the electric contact tab 45 of the board side connector 13 entering from the terminal receiving port 67 opened in the electric wire side housing fitting front end surface 65. Contact. The electric wire side terminal 43 is attached to the electric wire side housing 35 after the electric contact box portion 69 is locked to a lance (not shown) provided in the inner side of the electric wire side housing 35, so that the electric wire side terminal 43 is separated. In the electric wire side terminal 43, a press contact blade 71 is continuously provided behind the electric contact box 69. As shown in FIG. 6A, the press contact blade 71 is electrically connected to the conductor 24 by cutting the inner coating of the signal line 29 of the flat shield electric wire 25.

  A hood insertion groove 75 for inserting the hood 73 of the board side housing 41 is formed around the electric wire side housing fitting front end surface 65 (see FIG. 4A). Engagement block portions 77 that bulge in a direction orthogonal to the direction in which the electric wire side terminals 43 are arranged are integrally formed on both front sides of the electric wire side housing 35. The engagement block portion 77 contacts the substrate contact portion 55 when the substrate side connector 13 and the wire side connector 11 are fitted. Each engaging block portion 77 is provided with a bus bar through-hole 79 penetrating in the front-rear direction. The bus bar through-hole 79 is penetrated by the U-shaped projecting end pieces 23 of the bus bar plate 21, and the penetrating U-shaped projecting end sections 23 project forward from the engagement block portion 77 as shown in FIG. .

  The bus bar plate 21 is formed in a U-shape in which both sides of the belt-like metal plate are vertically bent to the same length on one side, and the bent both ends become U-shaped both-end protruding pieces 23. Each U-shaped projecting piece 23 on both ends has a bus bar side locking projection 82 (see FIG. 4C) and a bus bar side locking projection 81 (see FIG. 5C) that engage with the bus bar through hole 79. And a bus bar convex portion 85 (see FIG. 3) that engages with the peg concave portion 83 (see FIG. 2). The bus bar plate 21 has a sandwiching plate portion 87 (see FIG. 3) between the U-shaped projecting pieces 23 on both sides. As shown in FIG. 6, the press contact blade 71 of the electric wire side terminal 43 bypasses the clamping plate portion 87 and protrudes backward without contacting the clamping plate portion 87.

  A strain relief 37 is mounted behind the electric wire side housing 35 to which the bus bar plate 21 is mounted. A strain relief fixing groove 89 (see FIG. 3) is recessed in the outer surface of the engagement block portion 77 of the electric wire side housing 35. In the strain relief 37, locking frame portions 93 are protruded toward the engagement block portion 77 on both sides of a rectangular parallelepiped wire winding portion 91 (see FIG. 3). The strain relief 37 is in a state where the wire winding portion 91 is in contact with the sandwiching plate portion 87 of the bus bar plate 21, and the locking frame portion 93 is locked to the relief fixing protrusion 95 of the strain relief fixing groove 89, It is fixed to the housing 35.

  As shown in FIG. 6, the shield part 27 of the flat shield electric wire 25 is held between the holding plate part 87 and the electric wire winding part 91. That is, the strain relief 37 sandwiches the shield portion 27 exposed at the tip end portion 97 of the flat shield electric wire 25 between the bus bar plate 21 fixed to the electric wire side housing 35 along the electric wire width direction.

  An indent portion 99 that protrudes rearward toward the shield portion 27 is provided on the sandwiching plate portion 87 of the bus bar plate 21. On the opposing surface 101 of the strain relief 37 corresponding to the indented portion 99, rib protrusions 103 (see FIG. 8) for pressing the shield portion 27 against the indented portion 99 are provided along the electric wire width direction.

  Cover locking projections 105 (see FIG. 3) are provided on both sides of the wire winding portion 91 behind the locking frame portion 93. An electric wire sheath cover 39 is attached to the rear end portion 38 of the strain relief 37 from the rear, and the electric wire sheath cover 39 has cover locking frames 107 (see FIG. 5) on both sides engaged with the cover locking protrusions 105 of the electric wire winding portion 91. It is stopped and fixed to the strain relief 37. A portion of the flat shield electric wire 25 covered by the sheath portion 33 is sandwiched between the electric wire winding portion 91 and the electric wire sheath cover 39. That is, the electric wire sheath cover 39 holds the sheath portion 33 (see FIG. 7) of the flat shield electric wire 25 between the rear end portion 38 of the strain relief 37 holding the shield portion 27.

  The strain relief 37 winds and holds the flat shield electric wire 25 around the electric wire winding portion 91, thereby supporting the tension acting on the flat shield electric wire 25 by friction, and the conductor between the conductor 24 of the signal line 29 and the electric wire side terminal 43. It is comprised so that external force may not act on a contact part. The flat shield electric wire 25 wound around the electric wire winding portion 91 is bent into a U shape as shown in FIG. At the distal end portion 97 of the bent flat shield electric wire 25, the sheath portion 33 is removed and the shield portion 27 made of aluminum foil or the like is exposed. A plurality of signal lines 29 in which the conductor 24 is further covered with an inner coating are led out from the shield part 27.

  The shield part 27 comes into contact with the sandwiching plate part 87 of the bus bar plate 21 attached to the electric wire side housing 35 from behind, and is pressed and sandwiched by the strain relief 37 from behind. Thereby, the shield part 27 and the bus bar plate 21 are electrically connected. A plurality of signal lines 29 are led out from the shield portion 27, and the inner sheath of each signal line 29 is cut by the corresponding press contact blade 71, and the conductor 24 is conducted to the corresponding electric wire side terminal 43.

  The wire-side connector 11 is inserted into the hood insertion groove 75 in the hood portion 73 of the board-side connector 13 just before fitting with the board-side connector 13, and the relative positions of the connectors are positioned. In this positioning state, the pair of U-shaped projecting pieces 23 projecting from the wire-side connector 11 are arranged close to the outside of the pair of pegs 59 of the board-side connector 13.

  The U-shaped both-end protruding piece 23 that has been fitted from this state is slid to a predetermined position while being in sliding contact with the outer surface of the peg 59. The U-shaped projecting piece 23 that has been slid to a predetermined position has the bus bar convex portion 85 fitted into the peg concave portion 83 (see FIG. 2) and the bar tip edge 111 abutted against the peg convex strip 109 (see FIG. 2). It comes into contact and a reliable contact state is achieved.

Next, the effect | action of the electric wire side connector 11 which has the said structure is demonstrated.
As shown in FIG. 6, in the wire-side connector 11 according to the present embodiment, the exposed shield portion 27 of the flat shield wire 25 is brought into contact with the bus bar plate 21 fixed to the wire-side housing 35 from the rear. In this state, the shield part 27 is sandwiched between the flat shield electric wire 25 and the bus bar plate 21 by a strain relief 37 attached to the electric wire side housing 35 from behind.

  That is, the shield portion 27 of the flat shield electric wire 25 is in a state of being electrically connected to the bus bar plate 21. Thereby, the shield part 27 exposed to the front-end | tip part 97 of the flat shield electric wire 25 is simple structure clamped along the electric wire width direction between the bus-bar plate 21 fixed to the electric wire side housing 35, and the strain relief 37. Thus, the electrical contact can be stabilized while holding the shield portion 27.

Further, in the electric wire side connector 11 of the present embodiment, the flat shielded electric wire 25 includes the front end portion 97 exposing the signal line 29 and the shield portion 27, the bent bottom portion 113 behind the front end portion 97, and the bent bottom portion 113. It is bent into a substantially U shape by the reverse inverted L-shaped part 115 (see FIG. 7). The flat shield electric wire 25 bent into a substantially U shape is sandwiched between the wire connector 11 and the strain relief 37 with the end portion 97 interposing the bus bar plate 21.
The flat shield electric wire 25 is further led out as a reverse L-shaped portion 115 after the bent bottom portion 113 is bent in a U shape along the outer periphery of the strain relief 37. Here, since the inverted L-shaped portion 115 which is a portion covered with the sheath portion 33 behind the distal end portion 97 to which the wire side terminal 43 is connected is sandwiched between the strain relief 37 and the wire sheath cover 39, As shown in FIG. 6A, there is no possibility that the tension acting on the flat shield electric wire 25 acts on the conductor contact portion between the conductor 24 of the flat shield electric wire 25 and the electric wire side terminal 43. Furthermore, since the flat shield electric wire 25 is clamped along the electric wire width direction, it is possible to prevent a load from acting directly on the conductor contact portion even when the flat shield electric wire 25 is twisted. Therefore, the connection reliability of the electric wire side connector 11 connected to the front end portion 97 of the flat shield electric wire 25 can be improved, and the electric wire side connector 11 can be reliably fixed to the end portion of the flat shield electric wire 25.

  Further, when the shield part 27 of the flat shield electric wire 25 is sandwiched between the bus bar plate 21 fixed to the electric wire side housing 35 and the strain relief 37, the sandwiched shield part 27 is as shown in FIG. Then, it is pressed by the indented portion 99 punched out from the bus bar plate 21 and the rib protrusion 103 protruding from the opposing surface 101 of the strain relief 37. As a result, the flat shielded electric wire 25 is sandwiched by the shield 27 being pressed by the indent 99 and the rib protrusion 103 locally with a high contact load. Thereby, the shield part 27 can be reliably brought into electrical contact with the bus bar plate 21.

Therefore, according to the electric wire side connector 11 which concerns on this embodiment, an electrical contact can also be stabilized with a simple structure, hold | maintaining the shield part 27. FIG.
In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

11 ... Electric wire side connector (connector)
21 ... Busbar plate 24 ... Conductor 25 ... Flat shield electric wire 27 ... Shield part 33 ... Sheath part 35 ... Electric wire side housing (housing)
37 ... Strain relief (wire clamping member)
38 ... rear end 39 ... electric wire sheath cover 43 ... electric wire side terminal (terminal)
97 ... Tip 99 ... Indent 101 ... Opposing surface 103 ... Rib protrusion

Claims (2)

A connector to which a flat shielded electric wire having a plurality of parallel conductors is connected,
A housing that accommodates and holds terminals electrically connected to the conductors of the flat shield wire;
An electric wire clamping member mounted and fixed to the housing from the rear end side of the housing;
An electric wire sheath cover attached to and fixed to the electric wire holding member from the rear end side of the electric wire holding member;
With
The flat shielded electric wire includes a front end portion exposing the shield portion of the flat shield electric wire, a bent bottom portion behind the front end portion, and an inverted L-shaped portion behind the bent bottom portion. And is bent into a substantially U shape by an inverted L-shaped portion covered with a sheath portion,
The front end portion is sandwiched along the electric wire width direction by a bus bar plate fixed to the rear end side of the housing and the front end portion of the electric wire holding member, and the bent bottom portion extends along the outer periphery of the electric wire holding member. It extends to the rear end side of the electric wire holding member, and the inverted L-shaped portion is held along the electric wire width direction by the rear end portion of the electric wire holding member and the front end portion of the electric wire sheath cover. Connector. The bus bar plate has an indent,
Wherein the facing surface of the electrical wire clamping member which corresponds to the indented portion of the bus bar plate, according to claim 1, rib projections pressing said shield portion to said indentation portion and which are located along the wire width direction Connector.

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