JP2017220292A - Wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a production method that makes an attachment operation of a clip smooth.SOLUTION: A wire harness includes: a corrugate tube 20 in which a crest part 21 and a trough part 22 along a circumference direction are alternately provided in an axis direction; a gutter-like member 30 that is provided along the circumference direction of an outer periphery of the corrugate tube 20 and covers a part of the circumference direction of the crest part 21 and the trough part 22; and a clip 40. The clip 40 includes a band part 42 collectively surrounding the corrugate tube 20 and the gutter-like part 30, an attachment part 45 attached to a vehicle body 90 side by projecting to the outside to the band part 42; and a loosely-fitting part 46 loosely fitting to the trough part 22 by projecting to the inside to the band part 42.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wire harness.

  The wire harness disclosed in Patent Literature 1 includes a cable, a plate member disposed along the cable, and a pair of clip bands that bind the cable and the plate member. The plate member has an uneven shape whose height changes periodically depending on the position in the length direction on the upper surface thereof. The clip band has a clip (attachment portion) that is inserted into an attachment hole of the vehicle body when attached to the vehicle body. Further, the clip band has a first rib that is fitted into an uneven shape. By fitting the first rib into the concavo-convex shape, even if an external force is applied to the clip band, the positional deviation of the clip band in the length direction (axial direction) with respect to the plate member is regulated.

JP 2012-110100 A

  In the above case, although the positional deviation in the length direction of the clip band can be suppressed, it is difficult to suppress the positional deviation in the circumferential direction of the clip band. On the other hand, it is also possible to provide the plate member with a stopper that restricts the displacement of the clip band in the circumferential direction. However, when the clip band is positioned at a fixed position by the stopper, it is difficult to absorb the displacement when the clip (mounting part) is slightly displaced from the position corresponding to the attachment hole. There was a possibility that the installation work could not be carried out smoothly.

  The present invention has been completed based on the above-described circumstances, and an object of the present invention is to enable a clip to be smoothly attached to the vehicle body side.

  In the wire harness of the present invention, crests and troughs along the circumferential direction are alternately arranged in the axial direction, and the inside is arranged along the circumferential direction on the outer periphery of the corrugated tube and the corrugated tube serving as an insertion path for the electric wire. And having a band-shaped member having a cross-sectional arc shape covering a part in the circumferential direction of the peak and valley, and a band portion that collectively surrounds the corrugated tube and the flange-shaped member, and with respect to the band portion A clip having a mounting portion that protrudes outward and is attached to the vehicle body, and the clip protrudes inward with respect to the band portion and fits with play in the valley portion that is exposed without being covered by the hook-shaped member. It has a feature in that it has a round loose fitting part.

  In a state where the band portion collectively surrounds the corrugated tube and the hook-shaped member, the loose fitting portion moves in the axial direction within the gap of the valley portion of the corrugated tube and surrounds along the valley portion between both ends of the hook-shaped member. By moving in the direction, it is possible to absorb the displacement of the attachment portion with respect to the vehicle body side, so that the attachment portion can be smoothly attached to the vehicle body side.

It is a side view of the wire harness of Example 1 of the present invention. It is a partially expanded sectional view of FIG. It is sectional drawing which looked at the state of FIG. 2 from the front side.

Preferred embodiments of the present invention are shown below.
The hook-shaped member may be a hard member that maintains its shape. According to this, the path | route of a wire harness is maintained in the state by which bending control was carried out in the part which has a hook-shaped member, and a clip can surround a hook-shaped member stably.

  The cross-sectional shape of the bowl-shaped member may be a semicircular shape or a dominant arc shape. According to this, since the loose fitting portion can move within a range of 180 degrees or less in the circumferential direction between both ends of the bowl-shaped member, it is possible to prevent the clip from excessively rotating in the circumferential direction when being attached to the vehicle body. be able to.

<Example 1>
Embodiment 1 of the present invention will be described below with reference to FIGS. The wire harness of the first embodiment is, for example, routed under the floor of a car body 90 of an automobile, and includes a plurality of electric wires 10 and a corrugated tube 20 as an exterior member that collectively surrounds the electric wires 10. A hook-shaped member 30 disposed along a predetermined range of the corrugated tube 20, and a clip 40 that is movably held by the corrugated tube 20 via the hook-shaped member 30 and attached to the vehicle body 90 side. .

  As shown in FIG. 3, the electric wire 10 is a non-shielded electric wire in which an outer periphery of a core wire 11 made of metal such as aluminum or copper is surrounded by an insulating coating 12. The core wire 11 is composed of a stranded wire or a rod-shaped single core wire in which a plurality of thin wires are twisted together in a spiral shape. A terminal fitting (not shown) is connected to the terminal portion of the electric wire 10, and the terminal fitting is accommodated in a connector (not shown). Each electric wire 10 may be collectively surrounded by a shield member such as a braided wire or a metal foil.

  The corrugated tube 20 is made of a synthetic resin, and has a bellows tubular shape in which peaks 21 and valleys 22 are alternately and repeatedly arranged in the axial direction, as shown in FIGS. 1 and 2. The peak portion 21 and the valley portion 22 are provided over the entire circumference along the circumferential direction. Inside the corrugated tube 20 is an insertion passage 23 through which the electric wires 10 are loosely fitted and inserted. The corrugated tube 20 can be bent along the path of the wire harness.

  The hook-shaped member 30 is made of a synthetic resin and is configured as a hard member that maintains a certain shape. As shown in FIG. 1, the hook-shaped member 30 is disposed over a predetermined range in a part of the corrugated tube 20 in the axial direction, and has a cross-sectional arc shape along the lower half of the corrugated tube 20, specifically a semicircular cross-sectional shape. Configured as a plate material. The hook-shaped member 30 is positioned and fixed to the corrugated tube 20 by an adhesive tape 90 wound around both axial end portions thereof and the corrugated tube 20. The corrugated tube 20 is restricted in its bending motion by the hook-shaped member 30 and is arranged linearly along the hook-shaped member 30.

  As for the peak part 21 and the trough part 22 of the corrugated tube 20, the lower half part of the circumferential direction is covered with the hook-shaped member 30 in the position corresponding to the hook-shaped member 30, and the upper half part of the circumferential direction is the hook-shaped member 30. It is exposed and arranged between both circumferential edges (a stopper edge 33 described later). The inner peripheral surface of the bowl-shaped member 30 can be brought into contact with the flat top surface of each peak portion 21 along the circumferential direction, while being separated from the flat back end face of each valley portion 22. The opening surface is closed. Further, both end edges in the circumferential direction of the hook-shaped member 30 are formed as linear stopper edges 33 along the axial direction in the central portion in the height direction of the corrugated tube 20, and contact with a later-described loose fitting portion 46 of the clip 40. It is possible.

  The clip 40 is also made of a synthetic resin, and is integrally formed from a base portion 41 and a band portion 42 extending from the base portion 41. The band portion 42 has a flexible band shape, and surrounds the flange-shaped member 30 and the corrugated tube 20 in a lump, and circumferentially extends between the outer peripheral surface of the flange-shaped member 30 and the outer peripheral surface of the upper half of the corrugated tube 20. Wrapped across. On one surface of the band part 42, a large number of locking grooves 43 are continuously provided over a predetermined range of the tip part.

  As shown in FIGS. 2 and 3, the base portion 41 includes a block-shaped main body portion 44, an attachment portion 45 that protrudes outside the main body portion 44 (outside the band portion 42), and an inner side of the main body portion 44 ( It is formed integrally with a loose fitting portion 46 protruding inwardly with respect to the band portion 42.

  The main body 44 is provided with a locking hole 47 penetrating in the direction perpendicular to the axis. As shown in FIG. 3, a locking portion 48 that can be bent is provided inside the locking hole 47. Here, after the band portion 42 circulates around the corrugated tube 20 and the bowl-shaped member 30, the distal end portion is inserted into the locking hole 47 and pulled out from the one end surface side of the main body portion 44 to the other end surface side. When the tip of the band portion 42 is pulled from that state, the locking portion 48 is elastically locked to the corresponding locking groove 43, and the band portion 42 is fastened to the corrugated tube 20 and the bowl-shaped member 30. . At this time, the base 41 is abutted and supported by the upper end of the corrugated tube 20. Further, as shown in FIG. 3, the band portion 42 extends from the lower side than the opening of the locking hole 47 on the other end surface of the main body portion 44.

  The attachment portion 45 has a pair of claw portions 49 on both sides in the axial direction. Both the claw portions 49 can be bent and deformed with the tip portion in the protruding direction of the mounting portion 45 as a fulcrum. On both end faces in the axial direction of both claw portions 49, inclined surfaces 51 are provided so as to be gradually expanded from the upper end side (fulcrum side) to the lower end side (free end side).

  Further, the attachment portion 45 has a flange portion 52 that projects in an annular shape below both the claw portions 49. At the time of mounting the wire harness, the mounting portion 45 is inserted into the mounting hole 93 provided in the vehicle body 90, the both claw portions 49 are elastically locked to the upper surface of the vehicle body 90, and the flange portion 52 is the lower surface of the vehicle body 90. The clip 40 is attached to the vehicle body 90 so as not to come off.

  The loosely fitting portion 46 has a rib shape extending in the direction perpendicular to the axis along the lower surface of the main body portion 44. The loose fitting portion 46 has a rib thickness smaller than the opening width of the trough portion 22 (the separation width between adjacent mountain portions 21), and is formed over the entire length of the main body portion 44 in the direction perpendicular to the axis. The loose fitting portions 46 are provided in pairs at both axial end portions of the main body portion 44. As shown in FIG. 2, the loose fitting portion 46 has a trapezoidal shape that gradually decreases the rib thickness toward the lower end (tip) as seen from the axial orthogonal direction so as to correspond to the cross-sectional shape of the valley portion 22. Yes.

  When the band portion 42 is fastened to the corrugated tube 20 and the hook-shaped member 30, both loose fitting portions 46 are exposed between the stopper edges 33 of the hook-shaped member 30. 22 is inserted with play in the axial direction (opening width direction) with respect to the two trough portions 22) spaced apart from the center. Further, the loosely fitting portion 46 loosely fitted to the trough portion 22 is movable in the circumferential direction between both stopper edges 33 of the bowl-shaped member 30.

Next, a method for attaching the wire harness of the first embodiment to the vehicle body 90 will be described.
At the time of attachment, the corrugated tube 20 held by the band portion 42 is arranged with a space along the lower surface of the vehicle body 90, and in this state, the corrugated tube 20 is moved toward the vehicle body 90 side.

  In this case, when the clip 40 is correctly disposed at a position corresponding to the mounting hole 93 of the vehicle body 90, the mounting portion 45 is smoothly inserted into the mounting hole 93, and the mounting portion 45 is moved by elastic locking of the claw portion 49. It is attached to the vehicle body 90. That is, the wire harness is attached to the vehicle body 90 via the clip 40.

  On the other hand, for example, even if the mounting portion 45 is displaced in the axial direction with respect to the mounting hole 93 before mounting, the inclined surface 51 of the claw portion 49 slidably contacts the hole edge of the mounting hole 93 and the loose fitting portion 46 is It can move in the axial direction within the gap of the valley 22. Thereby, the attachment portion 45 is inserted and locked while being aligned with the attachment hole 93, and the wire harness is attached to the vehicle body 90 via the clip 40 as described above.

  Further, even if the mounting portion 45 is displaced in the circumferential direction with respect to the mounting hole 93 before mounting, the loose fitting portion 46 is a valley portion with the sliding of the band portion 42 with respect to the flange member 30 and the corrugated tube 20. 22, the mounting portion 45 is moved (rotated) in the circumferential direction to reach a position where the mounting portion 45 can be inserted into the mounting hole 93. Work) can be performed without any problems. In this case, the attachment portion 45 can be rotated in an angular range of about 180 degrees in the circumferential direction between the loose fitting portion 46 and the stopper edges 33 of the flange-shaped member 30. For this reason, the position shift of the attachment portion 45 with respect to the attachment hole 93 can be absorbed within a certain wide range.

  As described above, according to the first embodiment, in the state where the band portion 42 collectively surrounds the corrugated tube 20 and the bowl-shaped member 30, the loose fitting portion 46 is in the gap of the valley portion 22 of the corrugated tube 20. The displacement of the mounting portion 45 with respect to the vehicle body 90 side can be absorbed by moving in the axial direction and moving in the circumferential direction along the trough portion 22 between both stopper edges 33 of the bowl-shaped member 30. The attachment portion 45 can be smoothly attached to the vehicle body 90 side.

  Further, since the hook-shaped member 30 is a hard member that maintains a certain plate-like shape, the path of the wire harness is maintained in a state where the bending is restricted in the portion having the hook-shaped member 30, and the clip 40 is held in the hook-shaped member 30. Can be stably surrounded.

  Further, the cross-sectional shape of the hook-shaped member 30 is semicircular, and the loose fitting portion 46 can move within a range of about 180 degrees in the circumferential direction between the stopper edges 33 of the hook-shaped member 30. It is possible to prevent the clip 40 from excessively rotating in the circumferential direction when attached to the 90.

<Other embodiments>
Other embodiments will be briefly described below.
(1) The cross-sectional shape of the bowl-shaped member may be a dominant arc. If it carries out like this, the rotation angle of the circumferential direction of a loose fitting part can be restrained to less than 180 degree | times.
(2) The electric wire may be a shielded electric wire whose outer periphery is covered with a shield member.
(3) The band portion may be an elastic member that has a C-shape and is externally fitted to the corrugated tube by elastically expanding the gap between both ends.
(4) The material of the bowl-shaped member is not particularly limited, and may be made of metal or rubber.
(5) The number of loose fitting portions is not particularly limited, and may be one or three or more.
(6) The corrugated tube may have a slit structure that has a slit along the axial direction and can be opened through the slit. According to this, an electric wire can be laterally put in the corrugated tube, and the operation of passing the electric wire becomes easy.

DESCRIPTION OF SYMBOLS 10 ... Electric wire 20 ... Corrugated tube 21 ... Mountain part 22 ... Valley part 23 ... Insertion passage 30 ... Gutter-like member 40 ... Clip 42 ... Band part 45 ... Mounting part 46 ... Free fitting part 90 ... Vehicle body

Claims (3)

Corrugated tubes in which crests and troughs along the circumferential direction are alternately arranged in the axial direction, and the inside serves as an insertion path for the electric wire,
A corrugated member having a cross-sectional arc shape that is disposed along the circumferential direction on the outer periphery of the corrugated tube and covers a part of the crest and trough in the circumferential direction;
A clip having a band portion that collectively surrounds the corrugated tube and the hook-shaped member, and a clip having a mounting portion that protrudes outward with respect to the band portion and is attached to the vehicle body side;
The wire harness according to claim 1, wherein the clip has a loosely fitting portion that protrudes inward with respect to the band portion and fits with play in the valley portion that is exposed without being covered with the hook-shaped member.   The wire harness according to claim 1, wherein the hook-shaped member is a hard member that maintains a shape.   The wire harness according to claim 1 or 2, wherein a cross-sectional shape of the hook-shaped member is a semicircular shape or a dominant arc shape.

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