JP2017091855A - Wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire harness with which, even when terminals connected to end sections of covered wires of a twisted wire a terminal portion of which has been untwisted are inserted into a connector housing, the plurality of covered wires located at the terminal portion of the twisted wire can be fixed in a state of close contact in the radial direction, with ease and with uniform workmanship irrespective of a worker's skill level.SOLUTION: A wire harness has a U-shaped wire holder 5 that comprises: a first retention section 5d having a first concave curve surface 5c abutting on an outer peripheral surface of each of a plurality of covered wires 1 from one side in the radial direction of the covered wires 1 that are arranged in parallel; a second retention section 5f having a second concave curve surface 5e abutting on the outer peripheral surfaces of the covered wires 1 from the other side of the radial direction of the covered wires 1; and a coupling section 5g for integrally coupling the first retention section 5d and second retention section 5f at one end of each thereof so as to form a U-shaped opening between the other ends of the first and second retention sections 5d and 5f.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a wire harness.

  A twisted wire is, for example, a twisted pair of two wires, and the magnetic flux generated in adjacent loops formed by the twisted wires is alternately reversed and cancels each other. It has a characteristic that it can be reduced, it is difficult to radiate electromagnetic induction noise to the outside, and it is difficult to receive electromagnetic induction noise from the outside.

  Conventionally, as shown in FIGS. 6 (a) and 6 (b), an insulation coating layer 1b having a twisted electric wire 10 in which two covered electric wires 1 are twisted and covering the core wire 1a of each covered electric wire 1 is provided. A wire harness W0 is known in which a terminal 2 is connected to each core wire 1a exposed by peeling off one end and the terminal 2 is inserted into a cavity 3a of a connector housing 3 (see, for example, Patent Document 1). ).

  In this wire harness W0, two covered electric wires 1 are twisted back in the untwisting range Y of the end portion of the twisted electric wire 10, and each inserted electric wire is inserted into the cavity 3a of the connector housing 3 when each terminal 2 is inserted into the cavity 3a. A work surplus length for handling 1 is secured.

  In addition, the wire harness W0, after inserting each terminal 2 into the cavity 3a of the connector housing 3, winds the adhesive tape T around the two covered electric wires 1 located in the untwisting range Y of the terminal portion of the twisted electric wire 10, A tape winding fixing portion 4 for bringing the two covered electric wires 1 into close contact with each other in the radial direction is formed, and deterioration of characteristic impedance due to the influence of electromagnetic induction is suppressed.

Japanese Patent Laid-Open No. 2004-71404

  However, in the above-described wire harness W0, when a terminal of an electric wire constituting a circuit different from the twisted electric wire 10 is inserted into another cavity 3a adjacent to the cavity 3a into which the terminal 2 is inserted, the twisted electric wire 10 It is very difficult to wind the adhesive tape T around the two covered electric wires 1 located in the untwisting range Y, and the quality of the tape winding fixing portion 4 differs depending on the skill of the operator who winds the adhesive tape T. There was a problem.

  The present invention was made in order to solve the above-described problems, and even when a terminal connected to one end of a plurality of covered wires in the terminal portion of the twisted wire is inserted into the connector housing, An object of the present invention is to provide a wire harness that can fix a plurality of covered electric wires that have been twisted back to each other in a state where they are arranged in close contact with each other.

  In order to achieve the above object, a wire harness according to the present invention is formed by twisting together a plurality of covered electric wires and twisted wires that are untwisted at the terminal portions, and connected to one end of each of the covered electric wires. A terminal to be inserted into the cavity of the housing; and a bay-shaped recess, and in the bay-shaped recess, the terminal portion of the twisted wire is received and the plurality of covered wires are arranged in the depth direction of the bay-shaped recess. And an electric wire holder that is fixed in a state of being in close contact with each other so as to be orthogonal to each other.

  With this configuration, in the wire harness according to the present invention, the plurality of covered electric wires that have been twisted back at the end portions of the twisted electric wires are pushed into the bay-shaped recesses of the electric wire holder, and the plurality of covered electric wires are on one plane. It adheres in a state of being in close contact with each other.

  Therefore, the wire harness according to the present invention is in a state in which the plurality of covered electric wires twisted back at the terminal portions of the twisted electric wires are tightly contacted in the radial direction by the electric wire holder even when the terminals are inserted into the connector housing. It can be fixed easily and with a uniform quality regardless of the skill of the operator.

In the wire harness according to the present invention, the wire holder extends in a direction intersecting with the respective covered wires arranged in parallel so as to be in close contact with each other in the radial direction in the bay-shaped recess, and A first holding portion having a first concave curved surface that comes into contact with the outer peripheral surface of each of the covered electric wires from one radial side;
A second holding part having a second concave curved surface that is axisymmetric to the first holding part and abuts against the outer peripheral surface of each covered electric wire from the other radial side of each covered electric wire; The other end portions of the first holding portion and the second holding portion are integrated so that one end openings are formed between the one end portions of the first holding portion and the second holding portion. And a connecting portion to be connected.

  With this configuration, in the wire harness according to the present invention, a plurality of covered electric wires that have been twisted back at the terminal portion of the twisted electric wire are pushed into the bay-shaped recess from one end opening of the electric wire holder, and the outer periphery of each covered electric wire The first concave curved surface portion of the first holding portion comes into contact with the surface from one side in the radial direction of each covered wire, and the second holding portion from the other side in the radial direction of each covered wire comes into contact with the outer peripheral surface of each covered wire. When the second concave curved surface portion comes into contact with the wire harness according to the present invention, a plurality of covered electric wires whose twists are returned at the terminal portion of the twisted electric wire are pushed in from the one end opening of the electric wire holder into the bay-shaped concave portion. Then, the plurality of covered electric wires are fixed in a state of being in close contact with each other on a single plane.

  In the wire harness according to the present invention, in the electric wire holder, the first holding portion includes a first surface facing the second holding portion at one end portion of the first holding portion and the second holding portion. It is preferable that the distance from the second surface facing the part side is formed so as to gradually expand toward the one end opening part side.

  With this configuration, in the wire harness according to the present invention, the first surface and the second surface are separated from each other by the covered electric wire when the covered electric wire is pushed into the bay-shaped recess from the one end opening of the electric wire holder. The covered electric wire can be easily accommodated in the bay-shaped recess by being expanded in the direction.

  The wire harness according to the present invention has a configuration in which the first holding portion, the second holding portion, and the connecting portion of the wire holder are integrally formed of an elastically deformable resin material. preferable.

  With this configuration, the wire harness according to the present invention can mass-produce the electric wire holder at a low cost by a technique such as extrusion molding of a resin material.

  The wire harness according to the present invention preferably has a configuration in which a tape winding fixing portion around which an adhesive tape is wound is formed at an end portion of the end portion of the twisted electric wire on the side opposite to the connector housing.

  With this configuration, in the wire harness according to the present invention, when the terminal is inserted into the cavity of the connector housing, the twisted electric wire is not twisted back.

  According to the present invention, even if the terminal connected to the end of each covered electric wire of the twisted electric wire in which the twist of the terminal portion is returned is inserted into the connector housing, a plurality of terminals located at the terminal portion of the twisted electric wire are arranged. It is possible to provide a wire harness that can be easily fixed in a state in which the covered electric wires are in close contact with each other in the radial direction and with a uniform quality regardless of the skill of the operator.

It is a fragmentary perspective view of the wire harness which concerns on embodiment of this invention, (a) shows the state before inserting a terminal in a connector housing, (b) is the twist of a covered electric wire after inserting a terminal in a connector housing. The state which attached the electric wire holder to the return range is shown. It is a perspective view of the electric wire holder which concerns on embodiment of this invention. It is a wire axial direction view of the state which attached the electric wire holder concerning an embodiment of the invention to a covering electric wire. It is an electric wire axial direction view which shows the state with which the modification of the electric wire holder which concerns on embodiment of this invention was mounted | worn with the covered electric wire. It is an electric wire axis direction view showing the modification simple substance of the electric wire holder concerning an embodiment of the invention. It is the fragmentary perspective view of the conventional wire harness, (a) shows the state before inserting a terminal in a connector housing, (b) shows an adhesive tape in the untwisting range of a covered electric wire after inserting a terminal in a connector housing. The state which wound and formed the tape winding fixing | fixed part is shown.

  Hereinafter, a wire harness according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1A and 1B, the wire harness W <b> 1 according to the present embodiment is connected to a twisted wire 10 in which a plurality of covered wires 1 are twisted and one end of each covered wire 1. Terminal 2 to be inserted into the cavity 3a of the connector housing 3, and a wire holder having a U-shape and each covered wire 1 being pushed radially from the U-shaped opening 5a toward the U-shaped interior 5b 5 is provided. Here, the U-shaped opening 5a corresponds to one end opening in the present invention, and the U-shaped interior 5b corresponds to a bay-shaped recess in the present invention.

  The twisted electric wire 10 is obtained by twisting two covered electric wires 1 together. However, if the number of the covered electric wires 1 constituting the twisted electric wires is plural, they can be appropriately changed as necessary.

  In the wire harness W1, the two covered electric wires 1 are untwisted in the untwisting range Y of a predetermined length of the terminal portion of the twisted electric wire 10, and when inserting each terminal 2 into the cavity 3a of the connector housing 3, An operation surplus length for handling each covered electric wire 1 is secured.

  The covered electric wire 1 includes, for example, a core wire 1a formed from an annealed copper stranded wire and an insulating coating layer 1b formed of a resin material such as polyvinyl chloride and covering the core wire 1a. The core wire 1a is not limited to an annealed copper stranded wire, and for example, other electric wire materials such as an aluminum alloy single wire can be applied. Further, the insulating coating layer 1b is not limited to being made of polyvinyl chloride, and other insulating resin materials can be applied.

  The terminal 2 includes a rectangular tube-shaped tip connection portion 2a into which a tip connection portion of a male terminal (not shown) is inserted, and a core wire 1a that is integrally connected to the tip connection portion 2a and that is exposed at the end of the covered electric wire 1. A first barrel portion 2b that surrounds in the direction and is crimped to the core wire 1a, and is integrally connected to the first barrel portion 2b, and surrounds the insulating coating layer 1b in the circumferential direction at the end of the covered electric wire 1; It is a female terminal having a second barrel portion 2c that is crimped to 1b. The first barrel portion 2b is plastically deformed so as to be crimped to the core wire 1a by a tool, and the second barrel portion 2c is plastically deformed so as to be crimped to the insulating coating layer 1b by a tool. Thereby, as for the terminal 2, the 1st barrel part 2b is connected to the core wire 1a of the covered electric wire 1. FIG.

  The terminal 2 is made of, for example, copper or a copper alloy, and the surface is plated as necessary. The terminal 2 is not limited to copper or copper alloy, and other metal materials can be applied. Furthermore, the terminal is not limited to a female terminal, but can be a male terminal as required.

  The connector housing 3 is a female connector having a plurality of cavities 3a into which the terminals 2 are inserted, and is formed of a material having electrical insulating properties and elastically deformable characteristics. The connector housing 3 has, for example, six cavities 3a and is formed of a resin material such as polyester or polypropylene. The number of cavities 3a is not limited to six, and can be changed as needed as long as it is plural. The connector housing 3 can also be formed of a resin material other than polyester or polypropylene. Furthermore, the connector housing is not limited to the female connector housing, but can be a male connector housing as required.

  As shown in FIGS. 2 and 3, the wire holder 5 extends in a direction intersecting each covered wire 1 in the untwisting range Y arranged in parallel so as to be in close contact with the U-shaped interior 5 b in the radial direction, And the 1st holding | maintenance part 5d which has the 1st concave curved surface part 5c contact | abutted to the outer peripheral surface of each covered electric wire 1 from the radial direction one side of each covered electric wire 1, and a shape symmetrical with respect to the 1st holding | maintenance part 5d And the 2nd holding | maintenance part 5f which has the 2nd concave curved surface part 5e contact | abutted to the outer peripheral surface of each covered electric wire 1 from the radial direction other side of each covered electric wire 1, 1st holding part 5d, and 2nd holding | maintenance A connecting portion 5g that integrally connects the other end portions of the first holding portion 5d and the second holding portion 5f so that a U-shaped opening 5a is formed between each one end portion of the portion 5f. I have.

  The first holding portion 5 d has two first concave curved surface portions 5 c so as to correspond to the two covered electric wires 1. The cross-sectional radius of the first concave curved surface portion 5 c is formed substantially equal to the cross-sectional radius of the covered electric wire 1. The second holding portion 5 f has two second concave curved surface portions 5 e so as to correspond to the two covered electric wires 1. The cross-sectional radius of the second concave curved surface portion 5 e is formed approximately equal to the cross-sectional radius of the covered electric wire 1. The number of the first concave curved surface portions 5c and the second concave curved surface portions 5e can be appropriately changed according to the number of the covered electric wires 1.

  The first holding portion 5d, the second holding portion 5f, and the connecting portion 5g are integrally formed of a material having elastically deformable characteristics. The first holding portion 5d, the second holding portion 5f, and the connecting portion 5g are integrally formed of a resin material such as polyester or polypropylene, for example. In the steady state where no external force is applied, the first holding part 5d and the second holding part 5f are opposed to each other in parallel with the first holding part 5d and the second holding part 5f in the middle in the longitudinal direction. When an external force is applied in a direction in which the two are separated from each other, the U-shaped opening 5a is enlarged. The 1st holding | maintenance part 5d, the 2nd holding | maintenance part 5f, and the connection part 5g can also be formed with resin materials other than polyester and a polypropylene, or a metal material.

  The electric wire holder 5 includes a first surface F1 facing the second holding part 5f side at one end of the first holding part 5d and a second face facing the first holding part 5d side in the second holding part 5f. The distance from the surface F2 is formed so as to gradually increase toward the U-shaped opening 5a. The minimum distance S between the first surface F1 and the second surface F2 in the steady state described above is set to be smaller than the outer diameter of the covered electric wire 1.

  Further, the twisted electric wire 10 is formed with a tape winding fixing portion 6 around which an adhesive tape T is wound at the end opposite to the connector housing 3 in the untwisting range Y.

  Hereinafter, the assembly procedure of the wire harness W1 according to the present embodiment will be described. Here, as described above, in the twisted electric wire 10, the terminal 2 is connected to one end portion of each covered electric wire 1, and the two covered electric wires 1 are twisted back in the untwisting range Y of a predetermined length of the terminal portion. Therefore, when inserting the terminal 2 into the cavity 3 a of the connector housing 3, it is assumed that a surplus work length for routing each covered electric wire 1 is secured.

  First, the terminal 2 at one end of each covered wire 1 is inserted into the adjacent one of the plurality of cavities 3 a of the connector housing 3. In the present embodiment, the terminal 2 is inserted into each of the two cavities 3a arranged in the lateral direction of the connector housing 3, but each of the two cavities 3a arranged in the vertical direction of the connector housing 3 is inserted. The terminal 2 can also be inserted.

  Next, the two covered electric wires 1 in the untwisting range Y are pushed into the U-shaped electric wire holder 5 from the U-shaped opening 5a toward the U-shaped inside 5b in the radial direction, and the U-shaped inside 5b is radially input. The first concave curved surface portion 5c of the first holding portion 5d is brought into contact with the outer peripheral surface of the two covered electric wires 1 arranged in parallel so as to be in close contact with each other from the radial side of each covered electric wire 1, A state where the second concave curved surface portion 5e of the second holding portion 5f is brought into contact with the outer peripheral surface of the two coated electric wires 1 from the other radial side of each coated electric wire 1 so that the two coated electric wires 1 are in close contact with each other. Fix with.

  The electric wire holder 5 is attached to the two covered electric wires 1 so that the distance to the connector housing 3 and the distance to the tape winding fixing portion 6 are substantially equal. As a result, the two covered electric wires 1 are brought into close contact with each other in the untwisting range Y, and the deterioration of the characteristic impedance due to the influence of electromagnetic induction is suppressed.

  The electric wire holder 5 is replaced with, for example, the tape winding fixing portion 6 instead of being attached to the two covered electric wires 1 so that the distance to the connector housing 3 and the distance to the tape winding fixing portion 6 are substantially equal from the beginning. After being attached to the two covered electric wires 1 so as to be close to each other, the position can be shifted along the two covered electric wires 1 to the position described above.

  The wire holder 5 of the wire harness W1 according to the present embodiment has a first surface F1 facing the second holding portion 5f side at the one end portion of the first holding portion 5d and a first holding portion 5f. The distance from the second surface F2 facing the holding portion 5d side is gradually increased toward the U-shaped opening 5a side.

  As a result, when the covered wire 1 is pushed from the U-shaped opening 5a of the wire holder 5 toward the U-shaped interior 5b of the wire harness W1 according to the present embodiment, the covered wire 1 and the first surface F1 Thus, the covered electric wire 1 can be easily accommodated in the U-shaped interior 5b.

  Further, in the wire harness W1 according to the present embodiment, the first holding portion 5d, the second holding portion 5f, and the connecting portion 5g of the electric wire holder 5 are integrally formed of a resin material such as elastically deformable polyester or polypropylene. The minimum distance S between the first surface F1 and the second surface F2 in the steady state of the electric wire holder 5 is set to be smaller than the outer diameter of the covered electric wire 1.

  Thereby, the wire harness W1 according to the present embodiment is securely held by the first holding part 5d and the second holding part 5f of the electric wire holder 5 that holds the two covered electric wires 1 in the radial direction. Moreover, the electric wire holder 5 can be mass-produced at low cost by a technique such as extrusion molding of a resin material.

  In the wire harness W1 according to the present embodiment, a tape winding fixing portion 6 around which an adhesive tape T is wound is formed at the end of the twisted electric wire 10 opposite to the connector housing 3 in the untwisting range Y.

  Thereby, when the wire harness W1 which concerns on this Embodiment inserts the terminal 2 in the cavity 3a of the connector housing 3, the twisted electric wire 10 twists the two covered electric wires 1 and a twisted part is not twisted back. .

  Therefore, in the wire harness W1 according to the present embodiment, the two covered electric wires that are twisted back at the terminal portion of the twisted electric wire 10 by the electric wire holder 5 even if the terminal 2 is inserted into the cavity 3a of the connector housing 3. 1 can be fixed in a state of close contact in the radial direction with a uniform quality regardless of the skill of the operator.

  4 and 5 show a modification of the electric wire holder. The electric wire holder 5A has a U shape, and the three covered electric wires 1 extend from the U-shaped opening 5a to the U-shaped interior 5b. It is configured to be pushed in the radial direction.

  The electric wire holder 5 </ b> A extends in a direction intersecting the three covered electric wires 1 arranged in parallel so as to be in close contact with the U-shaped interior 5 b in the radial direction, and each covered electric wire 1 from the radial direction one side A first holding portion 5h having a first concave curved surface portion 5c that comes into contact with the outer peripheral surface of the electric wire 1, and a shape symmetrical to the first holding portion 5h, and from each other in the radial direction of each covered electric wire 1 A U-shaped opening between the second holding portion 5i having the second concave curved surface portion 5e that comes into contact with the outer peripheral surface of the covered electric wire 1 and one end portions of the first holding portion 5h and the second holding portion 5i. A connecting portion 5g that integrally connects the other end portions of the first holding portion 5h and the second holding portion 5i is provided so that 5a is formed.

  The first holding portion 5 h has three first concave curved surface portions 5 c so as to correspond to the three covered electric wires 1. The cross-sectional radius of the first concave curved surface portion 5 c is formed substantially equal to the cross-sectional radius of the covered electric wire 1. The second holding portion 5 i has three second concave curved surface portions 5 e so as to correspond to the three covered electric wires 1. The cross-sectional radius of the second concave curved surface portion 5 e is formed approximately equal to the cross-sectional radius of the covered electric wire 1.

  The first holding part 5h, the second holding part 5i, and the connecting part 5g are integrally formed of, for example, a resin material such as elastically deformable polyester or polypropylene. In the steady state where no external force is applied, the first holding unit 5h and the second holding unit 5i are parallel to each other in the first holding unit 5h and the second holding unit 5i. When an external force is applied in a direction in which the two are separated from each other, the U-shaped opening 5a is enlarged. The 1st holding | maintenance part 5d, the 2nd holding | maintenance part 5f, and the connection part 5g can also be formed with resin materials other than polyester and a polypropylene, or a metal material.

  The electric wire holder 5 includes a first surface F3 facing the second holding part 5i side at one end of the first holding part 5h and a second face facing the first holding part 5h side in the second holding part 5i. The distance from the surface F4 is formed so as to gradually expand toward the U-shaped opening 5a. The minimum distance S between the first surface F3 and the second surface F4 in the steady state described above is set to be smaller than the outer diameter of the covered electric wire 1.

  Therefore, the electric wire holder 5A can be easily fixed in a state where the three covered electric wires 1 that have been twisted back are in close contact with each other in the radial direction and with a uniform quality regardless of the skill of the operator.

  According to the present invention, even if the terminal connected to the end of each covered electric wire of the twisted electric wire in which the twist of the terminal portion is returned is inserted into the connector housing, a plurality of terminals located at the terminal portion of the twisted electric wire are arranged. It is possible to provide a wire harness that can be easily fixed in a state in which the covered electric wire is in close contact with the radial direction and can be fixed with a uniform quality regardless of the skill of the operator, and is useful for all wire harnesses using twisted electric wires. is there.

DESCRIPTION OF SYMBOLS 1 Coated electric wire 2 Terminal 3 Connector housing 5,5A Electric wire holder 5a U-shaped opening (one-end opening)
5b U-shaped interior (gulf-shaped recess)
5c 1st concave curved surface part 5d, 5h 1st holding | maintenance part 5e 2nd concave curved surface part 5f, 5i 2nd holding | maintenance part 5g Connection part 6 Tape winding fixing | fixed part 10 Twist electric wire F1, F3 1st surface F2, F4 Second surface T Adhesive tape W1 Wire harness

Claims (5)

A twisted electric wire formed by twisting a plurality of covered electric wires and untwisted at a terminal portion; and
A terminal connected to one end of each covered electric wire and inserted into a cavity of the connector housing;
A bay-shaped recess is provided, and the terminal portion of the twisted wire is received in the bay-shaped recess, and the plurality of covered wires are arranged on a single plane so that the wire axial direction is perpendicular to the depth direction of the bay-shaped recess. A wire harness comprising: an electric wire holder that adheres in a close contact state. The wire holder is
It extends in a direction intersecting with each of the covered electric wires arranged in parallel so as to be in close contact with each other in the radial direction in the bay-shaped recess, and contacts the outer peripheral surface of each of the covered electric wires from one radial direction side of each of the covered electric wires. A first holding part having a first concave curved surface in contact with the first holding part;
A second holding portion having a second concave curved surface that is axisymmetric to the first holding portion and that comes into contact with the outer peripheral surface of each covered wire from the other radial side of each covered wire;
The other end portions of the first holding portion and the second holding portion are integrated so that one end openings are formed between the one end portions of the first holding portion and the second holding portion. The wire harness according to claim 1, further comprising a connecting portion that is connected to the wire harness.   The electric wire holder includes a first surface that faces the second holding portion at one end of the first holding portion and a second surface that faces the first holding portion at the second holding portion. The wire harness according to claim 2, wherein the gap is formed so as to gradually widen toward the one end opening side.   The said electric wire holder has the said 1st holding | maintenance part, the said 2nd holding | maintenance part, and the said connection part integrally formed with the resin material which can be elastically deformed, The Claim 2 or Claim 3 characterized by the above-mentioned. The wire harness described in 1.   5. The twisted electric wire is formed with a tape winding fixing portion around which an adhesive tape is wound at an end portion of the terminal portion opposite to the connector housing. Item 1. A wire harness according to item 1.

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