JP6440548B2 - Wire with connector - Google Patents

Description

  The present invention relates to an electric wire with a connector.

  There is known a connector including a connector main body into which a plurality of electric wires are inserted, and a strain relief that is attached to a rear end portion of the connector main body and supports the electric wires (see, for example, Patent Document 1). The electric wire attached to this connector has a circular cross-sectional shape. Further, the cross-sectional shape of the through hole of the strain relief is also circular corresponding to the cross-sectional shape of the electric wire.

JP 2014-235786 A

  The cross section of the electric wire is not limited to a circular shape. For example, the electric wire may have a fan-shaped cross sectional shape. By bundling a plurality of such electric wires, a bundled electric wire having a circular cross sectional shape as a whole can be configured. it can. However, in the above connector, since the cross-sectional shape of the through hole of the strain relief is circular, there is a problem that it is not possible to deal with an electric wire having a fan-shaped cross-sectional shape.

  The problem to be solved by the present invention is to provide an electric wire with a connector that can cope with an electric wire having a non-circular cross-sectional shape.

  [1] An electric wire with a connector according to the present invention includes a plurality of electric wires each having a non-circular cross-sectional shape, and a connector attached to ends of the plurality of electric wires, and the connector includes a tip of the electric wire. A plurality of terminals connected to each other, a connector body having a plurality of receiving holes for receiving the terminals and the electric wires, respectively, and an insertion hole into which the electric wires are inserted, respectively, and mounted in the receiving holes, respectively. A plurality of strain reliefs, wherein the insertion hole has a non-circular cross-sectional shape corresponding to a cross-sectional shape of the electric wire, and the strain relief has a predetermined shape with respect to the connector body. The connector-attached electric wire is held by the connector main body so as to be able to rotate within an angle range.

  [2] In the above invention, the electric wires may each have a fan-shaped cross-sectional shape, and the plurality of electric wires may have a circular cross-sectional shape as a whole by bundling the plurality of electric wires.

  [3] In the above invention, the electric wire with a connector includes the three electric wires and the three strain reliefs, and the connector main body has the three receiving holes arranged in parallel. The three strain reliefs include a first strain relief located in the center and second and third strain reliefs located on both sides of the first strain relief, and the first strain relief. The relief is attached to the receiving hole such that the vertex of the cross-sectional sector of the insertion hole faces in the first direction, and the second strain relief has the vertex of the cross-sectional sector of the insertion hole in the first direction. The third strain relief is also attached to the receiving hole so as to face in a second direction substantially opposite to the second direction, and the apex of the cross-sectional sector of the insertion hole faces in the second direction. As it may be mounted in the housing hole.

  [4] In the above invention, the first strain relief is held by the connector body so that the first strain relief can rotate within a first angle range with respect to the connector body. The second stray relief is held by the connector body so that the second strain relief can rotate within a second angular range with respect to the connector body, and the third stray relief is The third strain relief is held by the connector body so that the third strain relief can rotate within a third angle range with respect to the connector body, the second angle range being the first angle range. The third angle range may be relatively wide with respect to the first angle range.

  [5] In the above invention, the strain relief includes a main body portion in which the insertion hole is formed, and a locking piece protruding from the main body portion in a radial direction of the main body portion, and the connector main body Is formed on the inner wall surface of the housing hole so as to correspond to the locking piece, and has a slit into which the locking piece is inserted, and the width of the slit is smaller than the width of the locking piece. And may be relatively wide.

  [6] In the above invention, the strain relief includes a plurality of the locking pieces arranged at substantially equal intervals along a circumferential direction of the main body, and the connector main body includes the locking It may have a plurality of slits formed on the inner wall surface of the receiving hole so as to correspond to the pieces and into which the locking pieces are respectively inserted.

  In the present invention, the insertion hole has a non-circular cross-sectional shape corresponding to the cross-sectional shape of the electric wire, and the strain relief can rotate within a predetermined angle range with respect to the connector body. For this reason, in this invention, it can respond to the electric wire which has a non-circular cross-sectional shape.

FIG. 1 is a perspective view showing an electric wire with a connector in an embodiment of the present invention. FIG. 2 is an exploded perspective view showing the electric wire with connector in the embodiment of the present invention. FIG. 3 is a view showing the bundled electric wires in the present embodiment, and is a cross-sectional view taken along the line III-III in FIG. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is a front view of the strain relief in the embodiment of the present invention. FIG. 6B is a side view of the strain relief in the embodiment of the present invention. 6C is a cross-sectional view taken along line VIC-VIC in FIG. 6A. 7 is a cross-sectional view taken along line VII-VII in FIG. FIG. 8 is a view showing another example of the electric wire with connector in the embodiment of the present invention, and is a cross-sectional view corresponding to FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 are a perspective view and an exploded perspective view of an electric wire with a connector in this embodiment, FIG. 3 is a cross-sectional view of a bundled electric wire in this embodiment, and FIGS. 4 and 5 are cross-sectional views of an electric wire with a connector in this embodiment. 6A to 6C are a front view, a side view, and a cross-sectional view of the strain relief according to this embodiment, and FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG.

  As shown in FIGS. 1 and 2, the electric wire with connector 1 in this embodiment includes a bundled electric wire 10 and a connector 30 attached to the tip of the bundled electric wire 10. In the electric wire 1 with a connector, for example, the connector 30 is fitted into the mounting hole 101 (see FIGS. 4 and 5) of the auxiliary machine 100 of the automobile, and the terminal 40 is connected to a terminal block (not shown) of the auxiliary machine 100. Electrically connected.

  The bundled electric wire 10 includes a plurality (three in this embodiment) of electric wires 20 and is used as, for example, a power cable of an electric vehicle. The bundled electric wire 10 has a circular cross-sectional shape as a whole. The bundled electric wire 10 is formed by bundling and compressing the electric wires in a state where the covering layers of the three electric wires having a circular cross-sectional shape are heated and softened. For this reason, as shown in FIG. 3, each electric wire 20 which comprises the bundled electric wire 10 has a fan-shaped cross-sectional shape whose center angle is about 120 degrees. And the cross-sectional shape of the three electric wires 20 bundled mutually complements mutually, The circular cross-sectional shape of the bundle electric wire 10 is formed.

  In FIG. 3, only one cross section of the three electric wires 20 is illustrated in detail, and the cross section of the other two electric wires 20 is illustrated only schematically. Moreover, the number of the electric wires 20 which comprise the bundled electric wire 10 is not specifically limited.

  As shown in FIG. 3, each electric wire 20 includes a central conductor 21 and a covering layer 22. The center conductor 21 is composed of a stranded wire formed by twisting a plurality of strands 211 together. The strand 211 is comprised with the metal material which has high electroconductivity, such as aluminum (Al), copper (Cu), or those alloys, for example. The covering layer 22 is made of a resin material having electrical insulating properties and covers the outer periphery of the central conductor 21. The covering layers 22 of the three electric wires 20 are integrated by heat fusion with each other by the softening and compression described above. As shown in FIGS. 1 and 2, the bundled wire 10 is divided into three wires 20 at the distal end portion, and each wire 20 has a fan-shaped cross-sectional shape.

  The “fan-shaped cross-sectional shape” in the present embodiment includes a substantially fan-shaped cross-sectional shape in which intersections of straight lines and intersections of straight lines and arcs are arcuate. The “circular cross-sectional shape” in the present embodiment includes not only a perfect circle but also an ellipse. In addition, if the cross-sectional shape of the electric wire 20 is also non-circular, it will not be specifically limited to a fan shape.

  As shown in FIGS. 1 and 2, the connector 30 includes a plurality of (three in this embodiment) terminals 40 connected to the electric wires 20, a connector main body 50 that holds the terminals 40, a wire seal 80, and the like. , Strain reliefs 90A to 90C.

  In addition, the number of the terminals 40 which the connector 30 has is not specifically limited, It sets according to the number of the electric wires 20 attached to the connector 30. FIG. In the present embodiment, the first to third strain reliefs 90A to 90C are collectively referred to as the strain relief 90.

  Each terminal 40 is made of the same material as that of the central conductor 21 described above, and is formed by molding a single metal plate. As shown in FIGS. 4 and 5, the terminal 40 has a terminal connection portion 41 on the distal end side and a wire connection portion 42 on the rear end side.

  A connection hole 411 that penetrates the terminal connection portion 41 is formed at the tip of the terminal connection portion 41. The connection hole 411 is used for bolting the terminal 40 to a terminal block (not shown) of the auxiliary machine 100. Further, a locking hole 412 that penetrates the terminal connection portion 41 is formed in a portion of the terminal connection portion 41 on the rear end side of the connection hole 411. A lance 613 (described later) of the connector main body 50 is locked in the locking hole 412.

  At the tip end portion of the electric wire 20 described above, the covering layer 22 is peeled off and the central conductor 21 is exposed. The exposed central conductor 21 is joined to the wire connecting portion 42 of the terminal 40 by ultrasonic welding, resistance welding, or the like. In addition, a pair of barrels 421 and 422 are erected on the electric wire connection portion 42, and the terminal 40 is fixed to the electric wire 20 by caulking the barrels 421 and 422 to the covering layer 22 of the electric wire 20. .

  The connector main body 50 includes a housing 60 and a shield shell 70. The housing 60 is made of an electrically insulating material such as a resin material. On the other hand, the shield shell 70 is made of a conductive material such as a metal material. Although not particularly shown, braided wires surrounding the three electric wires 20 are crimped to the shield shell 70 using a ring material.

  The housing 60 has a flat cylindrical portion 61 in which three accommodation holes 611 are formed. Each accommodation hole 611 penetrates the cylindrical portion 61 from the rear end to the front end. The three accommodation holes 611 are arranged in parallel so that the three accommodation holes 611 extend substantially parallel to each other.

  Each accommodation hole 611 accommodates the electric wire 20 and the terminal 40 to which the electric wire 20 is joined. The distal end portion of the terminal connection portion 41 of the terminal 40 protrudes from the opening 612 on the distal end side of the accommodation hole 611, and the connection hole 411 of the terminal connection portion 41 is located outside the housing 60. Each accommodation hole 611 is provided with a lance 613 that can be elastically deformed. The lance 613 is locked in the locking hole 412 of the terminal 40, so that the terminal 40 is fixed to the housing 60.

  The shield shell 70 has one holding hole 71 and three accommodation holes 72A to 72C. In the present embodiment, the first to third accommodation holes 72A to 72C are collectively referred to as the accommodation hole 72.

  The holding hole 71 extends along the axial direction of the shield shell 70 and opens at the tip of the shield shell 70. The holding hole 71 has a flat cross-sectional space corresponding to the cylindrical portion 61 of the housing 60, and the cylindrical portion 61 is inserted into the holding hole 71.

  The accommodation hole 72 has a circular cross-sectional shape, communicates with the rear end of the holding hole 71, and opens at the rear end of the shield shell 70. The accommodation hole 72 is arranged coaxially with the accommodation hole 611 of the cylindrical portion 61 in a state where the cylindrical portion 61 of the housing 60 is inserted into the holding hole 71. A wire seal 80 and a strain relief 90 are inserted into the accommodation hole 72.

  The accommodation holes 611 and 72 of the connector main body 50 in the present embodiment correspond to an example of the accommodation holes in the present invention. In addition, the number of the accommodation holes 611 and 72 of the connector main body 50 is not particularly limited, and is set according to the number of the electric wires 20 attached to the connector 30.

  As shown in FIG. 4, a pair of slits 722 and 722 are formed in the inner wall surface 721 of the accommodation hole 72, and these slits 722 and 722 open to the accommodation hole 72. Each slit 722 extends in the angle range θ (see FIG. 7) with respect to the center of the accommodation hole 72. The narrowest value of the angle range θ is preferably about 10 °, and the widest value of the angle range θ is preferably about 30 °. The pair of slits 722 and 722 are formed on the inner wall surface 721 of the accommodation hole 72 so as to face each other. A locking piece 92 (described later) of the strain relief 90 is inserted into each slit 722.

  The number of slits formed in one receiving hole is not particularly limited to the above, but the strain relief 90 can be stably provided by arranging a plurality of slits 722 at substantially equal intervals in the circumferential direction of the receiving hole 72. Can be held in.

  As shown in FIG. 5, the shield shell 70 has a flange 73 protruding outward. A mounting hole 731 is formed in the flange 73. The connector 30 is fixed to the auxiliary machine 100 by fastening the shield shell 70 to the auxiliary machine 100 by the bolt inserted into the mounting hole 731.

  The wire seal 80 is an annular seal material made of a flexible resin material such as silicone rubber or fluorine rubber. The wire seal 80 has an insertion hole 81 into which the electric wire 20 is inserted. In this embodiment, the insertion hole 81 has a fan-shaped cross-sectional shape corresponding to the cross-sectional shape of the electric wire 20. . For this reason, the wire seal 80 is pressed into the receiving hole 72 of the shield shell 70 in a state where the electric wire 20 is inserted into the insertion hole 81, so that the wire seal 80 seals between the electric wire 20 and the shield shell 70. ing.

  The strain reliefs 90 </ b> A to 90 </ b> C in the present embodiment are made of a resin material having a higher Young's modulus than the material constituting the wire seal 80. Specific examples of the material constituting the strain reliefs 90A to 90C include polybutylene terephthalate (PBT) and polyamide (PA).

  As shown in FIGS. 6A to 6C, the strain relief 90 according to the present embodiment includes a main body 91 and a locking piece 92 that protrudes from the main body 91 toward the radial direction of the main body 91. The main body 91 and the locking piece 92 are integrally formed.

  As shown in FIGS. 6A and 6B, the main body 91 has an annular shape having an outer diameter slightly smaller than the accommodation hole 72 of the shield shell 70. The main body 91 has a fan-shaped insertion hole 911 having a fan-shaped cross-section formed by a pair of straight lines 911a and 911b and an arc 911c. The cross-sectional shape of the insertion hole 911 corresponds to the cross-sectional shape of the electric wire 20 described above, and the electric wire 20 is inserted into the insertion hole 911. The pair of straight lines 911a, 911b intersect at an angle of about 120 degrees at one end, and the intersection forms a vertex 911d. On the other hand, the other ends of the straight lines 911a and 911b are connected by an arc 911c.

  A pair of grooves 913 are formed on the outer peripheral surface 911 of the main body 91. Each groove 913 extends along the axial direction of the main body 91. The pair of grooves 913 are arranged at symmetrical positions on the outer peripheral surface 912 of the main body 91.

  As illustrated in FIG. 6C, the locking piece 92 includes an elastic deformation portion 921 and a claw portion 922. The elastic deformation portion 921 is connected to the groove 913 of the main body portion 91 at one end portion 921a, and can be elastically deformed using the end portion 921a as a fulcrum. The claw portion 922 is provided in the vicinity of the other end of the elastic deformation portion 921, and can move along the radial direction of the main body portion 91 along with the elastic deformation of the elastic deformation portion 921. .

  Immediately after inserting the strain relief 90 into the accommodation hole 72 of the shield shell 70, the claw part 922 is pushed toward the center of the main body 91 by the inner wall surface 721 of the accommodation hole 72 of the shield shell 70, and the elastic deformation part 921. Is elastically deformed. When the strain relief 90 is further pushed in from this state, the locking piece 92 enters the slit 722 of the shield shell 70, the elasticity of the elastic deformation portion 921 is released, and the claw portion 922 has a diameter from the outer peripheral surface 911 of the main body portion 91. It protrudes toward the outside in the direction and engages with the slit 722. Thereby, the strain relief 90 is fixed to the shield shell 70 in the axial direction of the accommodation hole 72.

In the present embodiment, as shown in FIG. 7, in the X-axis direction in the drawing (the direction substantially perpendicular to the axial direction of the accommodation hole 72 (the axial direction of the strain relief 90)), The width W _{1 of the} slit 722 is relatively wider than the width W ₂ of the locking piece 92 of the strain relief 90 (W ₁ > W ₂ ). For this reason, the strain relief 90 is held by the shield shell 70 so that the strain relief 90 can rotate within the angular range θ in the circumferential direction.

  Further, in the present embodiment, the first strain relief 90A located at the center is mounted in the first accommodation hole 72A of the shield shell 70 in a posture in which the cross-sectional fan-shaped apex 911d of the insertion hole 911 faces upward. Yes. On the other hand, the second strain relief 90B located on the right side of the first strain relief 90A in FIG. 7 is in a posture in which the apex 911d of the sectional fan shape of the insertion hole 911 faces downward, and the second strain relief 90B It is mounted in the accommodation hole 72B. Similarly, the third strain relief 90B located on the left side of the first strain relief 90A in FIG. 7 also has the third housing of the shield shell 70 with the cross-sectional fan-shaped apex 911d of the insertion hole 911 facing downward. It is mounted in the hole 72C.

  By attaching the first to third strain reliefs 90A to 90C to the accommodation holes 72A to 72C of the shield shell 70 in such a posture, the twist generated in the three electric wires 20 can be reduced. The upper part in the present embodiment corresponds to an example of the first direction in the present invention, and the lower part in the present embodiment corresponds to an example of the second direction in the present invention.

  In addition, the attitude | position of the 1st-3rd strain relief 90A-90C at the time of mounting | wearing with the 1st-3rd accommodation hole 72A-72C of the shield shell 70 is not specifically limited above.

  For example, although not particularly illustrated, the first strain relief 90A is mounted in the first receiving hole 72A in a posture in which the vertex 911d faces downward, and the second strain relief 90B in the posture in which the vertex 911d faces upward. The third strain relief 90C may be mounted in the third storage hole 72C with the second storage hole 72B mounted and the apex 911d facing upward. In this case, the lower side in the present embodiment corresponds to an example of the first direction in the present invention, and the upper side in the present embodiment corresponds to an example of the second direction in the present invention.

  Here, if the strain relief having a fan-shaped insertion hole having a sectional shape is fixed to the shield shell, the posture of the electric wire is fixed by the strain relief. In this case, if the terminal and the electric wire are joined with a deviation from a desired posture, the electric wire is twisted between the terminal and the strain relief, and a torsional stress is generated at the joint between the terminal and the electric wire. Connection reliability may be reduced.

  Further, when the terminal and the electric wire are joined with a deviation from a desired posture, the amount of deviation can be offset by fixing the strain relief angle while fixing it to the shield shell. However, in this case, since it takes time to individually adjust the strain relief, the productivity of attaching the connector to the bundled wire is significantly reduced.

  On the other hand, in this embodiment, the insertion hole 911 of the strain relief 90 has a fan-shaped cross-sectional shape corresponding to the cross-sectional shape of the electric wire 20, and the strain relief 90 is at a predetermined angle with respect to the shield shell 70. It is held rotatably within the range θ. For this reason, the connector 30 in this embodiment can respond | correspond to the bundled electric wire 10 comprised from the electric wire 20 of fan-shaped cross-sectional shape.

  In particular, since the strain relief 90 is rotatably held by the shield shell 70, it is possible to ensure high connection reliability between the terminal and the electric wire and to facilitate the work of attaching the connector 30 to the bundled electric wire 10. it can.

  The embodiment described above is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

  For example, in the above-described embodiment, as shown in FIG. 7, the angular range θ of the slits 722 of all the accommodation holes 72A to 72C is substantially the same, but is not particularly limited thereto.

FIG. 8 is a view showing another example of the electric wire with connector. For example, as shown in FIG. 8, the second and third housing holes 72B, the angle range theta ₂ of 72C slit 722, the theta _3, relative to the angular range theta ₁ of the slit 722 of the first housing hole 72A You may make it comparatively wide ((theta) ₂ > (theta) ₁ , (theta) ₃ > (theta) ₁ ).

  The second and third strain reliefs 90B and 90C located on the outer side tend to have a larger amount of misalignment between the terminal and the electric wire than the first strain relief 90A located in the center. Therefore, by adopting the above configuration, a larger amount of deviation can be absorbed by the second and third strain reliefs 90B and 90C.

Angular range theta ₁ of the first strain relief 90A corresponds to an example of a first angular range in the present invention in this embodiment, the second strain relief 90B in this embodiment the angle range theta ₂ is the second in the present invention corresponds to an example of the angular range, the angle range theta ₃ of the third strain relief 90C in this example is equivalent to an example of the third angular range in the present invention.

DESCRIPTION OF SYMBOLS 1 ... Electric wire with a connector 10 ... Bundled electric wire 20 ... Electric wire 21 ... Central conductor 211 ... Elementary wire 22 ... Covering layer 30 ... Connector 40 ... Terminal 41 ... Terminal connection part 411 ... Connection hole 412 ... Locking hole 42 ... Electric wire connection part 421 , 422 ... Barrel 50 ... Connector body 60 ... Housing 61 ... Tube
611 ... Accommodating hole
612 ... Opening
613 ... Lance 70 ... Shield shell 71 ... Holding hole 72, 72A-72C ... Accommodating hole
721 ... Inner wall surface
722 ... Slit 73 ... Flange
731 ... Mounting hole 80 ... Wire seal 81 ... Insertion hole 90, 90A-90C ... Strain relief 91 ... Main body 911 ... Insertion hole
911a, 911b ... straight line
911c ... Arc
911d ... vertex 912 ... outer peripheral surface 913 ... groove part 92 ... locking piece 921 ... elastic deformation part
921a ... End 922 ... Claw 100 ... Auxiliary machine 101 ... Mounting hole

Claims (7)

A plurality of electric wires each having a non-circular cross-sectional shape;
A plurality of connectors attached to the ends of the wires,
The connector is
A plurality of terminals respectively connected to the ends of the wires;
A connector body having a plurality of receiving holes for receiving the terminals and the electric wires, and
Each having an insertion hole into which the electric wire is inserted, and a plurality of strain reliefs mounted in the accommodation holes, respectively,
The insertion hole has a non-circular cross-sectional shape corresponding to the cross-sectional shape of the electric wire,
The strain relief is held by the connector body so that the strain relief can rotate within a predetermined angular range with respect to the connector body ,
The strain relief is
A body part in which the insertion hole is formed;
A locking piece protruding from the main body portion in the radial direction of the main body portion,
The connector body is formed on the inner wall surface of the accommodation hole so as to correspond to the locking piece, and has a slit into which the locking piece is inserted.
The width of the slit is an electric wire with a connector that is relatively wide with respect to the width of the locking piece . It is an electric wire with a connector according to claim 1,
The electric wires each have a sector cross-sectional shape,
The plurality of electric wires are connector-attached electric wires having a circular cross-sectional shape as a whole by bundling the plurality of electric wires. It is an electric wire with a connector according to claim 2,
The connector-attached electric wire includes the three electric wires and the three strain reliefs,
The connector body has three housing holes arranged in parallel,
The three strain reliefs are
A first strain relief located in the center;
Second and third strain reliefs located on opposite sides of the first strain relief;
The first strain relief is attached to the receiving hole so that the apex of the cross-sectional sector of the insertion hole faces the first direction,
The second strain relief is attached to the receiving hole so that a vertex of the sectional fan shape of the insertion hole faces a second direction substantially opposite to the first direction,
The third strain relief is also an electric wire with a connector attached to the accommodation hole so that the apex of the cross-sectional sector of the insertion hole faces the second direction. It is an electric wire with a connector according to claim 3,
The first strain relief is held on the connector body such that the first strain relief can rotate within a first angular range relative to the connector body;
The second stray relief is held on the connector body such that the second strain relief can rotate within a second angular range relative to the connector body,
The third stray relief is held on the connector body so that the third strain relief can rotate within a third angular range relative to the connector body,
The second angular range is relatively wide with respect to the first angular range;
The third angle range is also an electric wire with a connector that is relatively wide with respect to the first angle range. It is an electric wire with a connector according to any one of claims 1 to 4 ,
The strain relief has a plurality of the locking pieces arranged at substantially equal intervals along the circumferential direction of the main body,
The connector main body is an electric wire with a connector formed on an inner wall surface of the housing hole so as to correspond to the locking piece, and having a plurality of slits into which the locking pieces are respectively inserted. A plurality of electric wires each having a non-circular cross-sectional shape;
A plurality of connectors attached to the ends of the wires,
The connector is
A plurality of terminals respectively connected to the ends of the wires;
A connector body having a plurality of receiving holes for receiving the terminals and the electric wires, and
Each having an insertion hole into which the electric wire is inserted, and a plurality of strain reliefs mounted in the accommodation holes, respectively,
The insertion hole has a non-circular cross-sectional shape corresponding to the cross-sectional shape of the electric wire,
The strain relief is held by the connector body so that the strain relief can rotate within a predetermined angular range with respect to the connector body,
The electric wires each have a sector cross-sectional shape,
The plurality of electric wires is a connector-attached electric wire having a circular cross-sectional shape as a whole by bundling the plurality of electric wires ,
The connector-attached electric wire includes the three electric wires and the three strain reliefs,
The connector body has three housing holes arranged in parallel,
The three strain reliefs are
A first strain relief located in the center;
Second and third strain reliefs located on opposite sides of the first strain relief;
The first strain relief is attached to the receiving hole so that the apex of the cross-sectional sector of the insertion hole faces the first direction,
The second strain relief is attached to the receiving hole so that a vertex of the sectional fan shape of the insertion hole faces a second direction substantially opposite to the first direction,
The third strain relief is also an electric wire with a connector attached to the accommodation hole so that the apex of the cross-sectional sector of the insertion hole faces the second direction. It is an electric wire with a connector according to claim 6,
The first strain relief is held on the connector body such that the first strain relief can rotate within a first angular range relative to the connector body;
The second stray relief is held on the connector body such that the second strain relief can rotate within a second angular range relative to the connector body,
The third stray relief is held on the connector body so that the third strain relief can rotate within a third angular range relative to the connector body,
The second angular range is relatively wide with respect to the first angular range;
The third angle range is also an electric wire with a connector that is relatively wide with respect to the first angle range.

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