WO2021187064A1

WO2021187064A1 - Wire harness

Info

Publication number: WO2021187064A1
Application number: PCT/JP2021/007598
Authority: WO
Inventors: 誠司牧野; 玉新林
Original assignee: 住友電装株式会社
Priority date: 2020-03-20
Filing date: 2021-03-01
Publication date: 2021-09-23
Also published as: JP2021151137A

Abstract

The present invention provides a wire harness having a new structure capable of easily positioning an electrical wire and a grommet.　A wire harness 10 is provided with an electric wire 12, a grommet 14 having a through-hole 20 through which the electric wire 12 passes, and a positioning member 42 affixed to the outer peripheral surface of the electric wire 12. The positioning member 42 has a contact part 50 that comes into contact with the grommet 14 in the length direction of the electric wire 12, and the grommet 14 has a receiving part 28 that comes into contact with the contact part 50 in the length direction.

Description

Wire harness

This disclosure relates to a wire harness.

Conventionally, the electric wire that constitutes the electrical system of a vehicle may be a wire harness provided with a grommet that prevents water from entering the vehicle interior at a portion that is inserted from the vehicle interior to the outside of the vehicle interior. As shown in Patent Document 1, the grommet is formed of rubber or the like and is liquid-tightly attached to the panel so as to cover a hole provided in the panel of the vehicle that separates the interior of the vehicle from the outside of the vehicle. Has been done. Then, when the grommet is in close contact with the outer peripheral surface of the electric wire, the space between the electric wire and the grommet is hermetically sealed to prevent water from entering the vehicle interior.

Japanese Unexamined Patent Publication No. 2004-166431

By the way, since the grommet is positioned with respect to the panel of the vehicle, the grommet and the electric wire need to be positioned with each other in the length direction of the electric wire. That is, if the positions of the electric wire and the grommet deviate in the length direction of the electric wire, there is a possibility that both ends of the electric wire cannot be connected to a device such as a battery or an inverter on both sides of the grommet. Therefore, positioning work of the electric wire and the grommet is required in the wire passing work of penetrating the electric wire through the grommet.

However, when trying to position the electric wire and grommet in the wire-passing work as in the past, the wire-passing work may become difficult.

Therefore, we will disclose a wire harness with a new structure that can easily position the electric wire and grommet.

The wire harness of the present disclosure includes an electric wire, a grommet having a through hole through which the electric wire penetrates, and a positioning member fixed to the outer peripheral surface of the electric wire, and the positioning member is in the length direction of the electric wire. The grommet has a contact portion that contacts the grommet, and the grommet has a receiving portion that contacts the contact portion in the length direction.

According to the present disclosure, the electric wire and the grommet can be easily positioned in the wire harness.

FIG. 1 is a perspective view of the wire harness according to the first embodiment. FIG. 2 is a cross-sectional view of the wire harness shown in FIG. FIG. 3 is a perspective view illustrating attachment of a positioning member to an electric wire in the wire harness shown in FIG. FIG. 4 is a cross-sectional view of the wire harness according to the second embodiment. FIG. 5 is a cross-sectional view of the wire harness according to the third embodiment. FIG. 6 is a cross-sectional view of the wire harness according to the fourth embodiment. FIG. 7 is a perspective view of a split body constituting the wire harness according to another embodiment. FIG. 8 is a cross-sectional view of a positioning member constituting the wire harness according to another embodiment.

<Explanation of Embodiments of the present disclosure>
First, embodiments of the present disclosure will be listed and described.
The wire harness of the present disclosure is
(1) An electric wire, a grommet having a through hole through which the electric wire penetrates, and a positioning member fixed to the outer peripheral surface of the electric wire are provided, and the positioning member contacts the grommet in the length direction of the electric wire. The grommet is a wire harness having a contact portion that makes contact with the contact portion in the length direction.

According to the wire harness described in the present disclosure, when the electric wire is inserted into the grommet, the contact portion of the positioning member fixed to the electric wire comes into contact with the receiving portion of the grommet, so that the grommet is brought into contact with the electric wire. Positioned. As a result, the electric wire and the grommet can be easily positioned without requiring a special positioning operation, and the electric wire can be easily inserted into the grommet.

(2) The positioning member has an accommodating portion accommodated in the through hole provided in the grommet, the accommodating portion has the contact portion, and the receiving portion of the grommet is said. It is preferable that the through hole protrudes from the inner peripheral surface. Since the contact portion of the positioning member and the receiving portion of the grommet are provided so as to be in contact with each other in the through hole of the grommet, the wire harness can be miniaturized.

(3) In the above (2), it is preferable that the receiving portion provided on the grommet is pressed against the outer peripheral surface of the electric wire. A sealing structure for sealing between the grommet and the electric wire can be provided by utilizing the receiving portion protruding from the inner surface of the wall of the through hole in the grommet. Further, even if the size of the receiving portion is reduced in the length direction and the range in which the grommet and the electric wire in the receiving portion are in contact with each other is narrowed, the receiving portion is held in contact with the positioning member. Deterioration of sealing performance is prevented. Therefore, the sealing performance can be improved while suppressing the frictional resistance acting when the electric wire is passed through the grommet.

(4) It is preferable that the positioning member is composed of a set of divided bodies arranged to face each other, and the electric wire penetrates between the set of divided bodies. According to this, the positioning member can be easily attached to the electric wire. In particular, it is not necessary to move the positioning member in the length direction in an extrapolated state with respect to the electric wire, and even when the positioning member is strongly pressed against the outer peripheral surface of the electric wire, the positioning member should be mounted at an appropriate position with respect to the electric wire. Is easy. Further, even if connectors or the like are connected to both ends of the electric wire, the electric wire can be easily passed through the positioning member.

(5) An adhesive tape having an adhesive layer is provided, and the adhesive tape is wound and fixed to an outer peripheral surface of the electric wire and an outer peripheral surface of an end portion of the positioning member protruding from the grommet, and the positioning is performed. The member is preferably fixed to the electric wire by the adhesive tape. In this way, it is also possible to fix the electric wire and the positioning member by tape winding, and by winding the adhesive tape in a state where the electric wire and the positioning member are mutually positioned, the positioning member is positioned appropriately with respect to the electric wire. Can be easily fixed to.

Further, an auxiliary water blocking structure for preventing water from entering between the electric wire and the positioning member can be provided by the adhesive tape. That is, at the end of the positioning member on the side protruding from the grommet, the opening of the positioning member is closed by the electric wire and the adhesive tape, so that the adhesive tape prevents water from entering between the electric wire and the positioning member. .. Since such an auxiliary water stop structure is composed of an adhesive tape which is a fixing structure for fixing the electric wire and the positioning member, an increase in the number of parts for providing the auxiliary water stop structure is avoided. NS.

(6) The grommet has a first opening arranged on the outside of the vehicle interior when mounted on the attached body, and the positioning member is arranged on the first opening side of the grommet. Is preferable. By inserting the positioning member from the outside of the vehicle interior into the through hole of the grommet, a water blocking structure due to the close contact between the grommet and the electric wire is provided at a position closer to the vehicle interior than the positioning member. Therefore, when water is splashed from the outside of the passenger compartment, the water passes between the positioning member and the electric wire, and then reaches the water blocking structure due to the close contact between the grommet and the electric wire. Since the momentum of water is attenuated when passing between the positioning member and the electric wire, it is possible to prevent strong water pressure from acting on the water blocking structure due to the close contact between the grommet and the electric wire, and the stop between the grommet and the electric wire. Water performance can be improved.

By inserting the positioning member into the through hole of the grommet at a position away from the mounted body to the outside of the vehicle interior, even if the deformation of the grommet is restrained by the positioning member, the deformation of the grommet is performed at a position close to the mounted body. Permissible. Therefore, it is possible to obtain a large degree of freedom in the wiring route of the electric wire due to the deformation of the grommet.

(7) In any of the above (1) to (5), the grommet has a second opening arranged on the vehicle interior side in a state of being mounted on the attached body, and the positioning member is the grommet. It is preferable that it is arranged on the side of the second opening. By inserting the positioning member into the through hole of the grommet from the vehicle interior side, the positioning member is inserted into the grommet at a position close to the mounting portion of the grommet to the mounted body. Therefore, for example, when the grommet is attached to the attached body at the peripheral edge of the hole, the deformation of the grommet to the inner peripheral side at the attachment portion to the attached body is restricted by the positioning member, and the grommet is removed from the attached body. It becomes difficult to come off.

(8) It is preferable that the positioning member has a pressing protrusion protruding from the inner peripheral surface, and the pressing protrusion is pressed against the outer peripheral surface of the electric wire. The positioning member can be positioned with respect to the electric wire by pressing the pressing protrusion of the positioning member against the outer peripheral surface of the electric wire. In particular, by making the pressing protrusion bite into the insulating coating of the electric wire, it is possible to fix the positioning member to the electric wire without providing a special fixing member such as an adhesive tape.

<Details of Embodiments of the present disclosure>
Specific examples of the wire harness of the present disclosure will be described below with reference to the drawings. It should be noted that the present disclosure is not limited to these examples, and is indicated by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

<Embodiment 1>
Hereinafter, the first embodiment of the present disclosure will be described with reference to FIGS. 1 to 3. As shown in FIGS. 1 and 2, the wire harness 10 has a structure in which the electric wire 12 is inserted through the grommet 14. In the following description, the upward direction will be described as the Z direction in FIG. 1, the front direction will be described as the X direction in FIG. 1, and the right direction will be described as the Y direction in FIG. The upward, forward, and right directions referred to here do not necessarily correspond to the upward, forward, and right directions of the vehicle to which the wire harness 10 is attached. Further, in the following description, the length direction means, in principle, the front-back direction which is the length direction of the electric wire 12. Further, for a plurality of the same members, a reference numeral may be added to only a part of the members, and the reference numeral may be omitted for other members.

<Electric wire 12>
The electric wire 12 is an insulated electric wire in which an insulating coating 18 formed of a synthetic resin or the like is provided on the outside of a core wire 16 composed of a single wire or a stranded wire of a conductor. The core wire 16 and the insulating coating 18 of the electric wire 12 are formed of a known general material. A connector (not shown) is attached to both ends of the electric wire 12 in a state of being conducted to the core wire 16.

<Grommet 14>
The grommet 14 is formed of an elastic body such as rubber or resin elastomer. The grommet 14 has a cylindrical shape as a whole, and has a through hole 20 penetrating in the front-rear direction. The grommet 14 includes a base portion 22 attached to a vehicle panel 32, which will be described later, and a tubular portion 24 that projects forward from the base portion 22.

<Base 22>
The base portion 22 has a tubular shape or an annulus plate shape, and has a circular outer peripheral shape in the present embodiment. The base portion 22 has a fitting groove 26 that opens on the outer peripheral surface and extends continuously over the entire circumference in the circumferential direction. The fitting groove 26 has a groove cross-sectional shape corresponding to the peripheral edge of the hole 34 in the panel 32 described later.

<Cylinder 24>
The tubular portion 24 has a tubular shape having a diameter smaller than that of the base portion 22, and is cylindrical in the present embodiment. The tubular portion 24 is integrally formed with the base portion 22, and projects forward at the central portion of the base portion 22. A receiving portion 28 that projects toward the inner circumference is provided on the inner peripheral surface of the tubular portion 24. The receiving portion 28 is an annular ridge that protrudes into the inner surface of the wall of the through hole 20, which is the inner peripheral surface of the tubular portion 24, and continuously extends over the entire circumference in the circumferential direction. In the receiving portion 28, the inner diameter dimension, which is the facing distance between the protruding tip surfaces in the radial direction of the tubular portion 24, is smaller than the outer diameter dimension of the electric wire 12. In the tubular portion 24, the fastening portion 30 is located in front of the portion where the receiving portion 28 is formed.

<Panel 32>
The grommet 14 is attached to the panel 32 of the vehicle as an attached body. The panel 32 is a member that separates the vehicle interior (I) and the vehicle interior (O), and is made of, for example, a metal plate. The panel 32 is provided with a hole 34 that penetrates in the thickness direction. The cross-sectional shape of the hole 34 is not particularly limited, but in the present embodiment, it has a circular cross section.

<Mounting the grommet 14 on the panel 32>
Then, the base 22 of the grommet 14 is inserted into the hole 34 of the panel 32, and the peripheral edge of the hole 34 in the panel 32 is fitted into the fitting groove 26 of the base 22, so that the grommet 14 has a hole in the panel 32. It is attached to the forming portion of 34. By fitting the panel 32 into the fitting groove 26, the inner surface of the wall of the fitting groove 26 is pressed against the panel 32, and the space between the base 22 of the grommet 14 and the panel 32 is hermetically sealed. There is. This prevents water from entering the vehicle interior (I) through between the base 22 of the grommet 14 and the panel 32. It is also possible to improve the liquidtightness between the grommet 14 and the panel 32 by providing a seal ridge that protrudes from the inner surface of the fitting groove 26 and is continuous over the entire circumference.

In the state where the grommet 14 is mounted on the panel 32, the through hole 20 provided in the grommet 14 has a first opening 36 at the end on the tubular portion 24 side, which is the outside (O) side of the vehicle interior (O). The end on the base 22 side, which is the vehicle interior (I) side, is the second opening 38.

<Public wire 12 to grommet 14>
An electric wire 12 is inserted through the grommet 14. The electric wire 12 is inserted from the front of the grommet 14 into the inner circumference of the tubular portion 24, and is passed through the through hole 20 so as to extend rearward of the grommet 14. In short, the electric wire 12 is inserted into the through hole 20 from the first opening 36 toward the second opening 38. Then, the electric wire 12 penetrates the hole 34 of the panel 32 by being inserted into the grommet 14.

The receiving portion 28 of the grommet 14 is pressed against the outer peripheral surface of the electric wire 12 so as to be in close contact with the entire circumference. As a result, the space between the electric wire 12 and the receiving portion 28 is liquid-tightly sealed, and water is prevented from entering the vehicle interior (I) from the outside (O) of the vehicle interior (O) through the space between the electric wire 12 and the grommet 14. There is. In short, a seal structure (water-stopping structure) is provided in which the receiving portion 28 of the grommet 14 is pressed against the outer peripheral surface of the electric wire 12 to stop water between the electric wire 12 and the grommet 14.

The electric wire 12 and the grommet 14 are separated from each other on both sides in the length direction away from the receiving portion 28, and are not in direct contact with each other. That is, in front of the receiving portion 28 in the length direction, the fastening portion 30 of the electric wire 12 and the grommet 14 is separated from each other, and a positioning member 42 described later is interposed between the electric wire 12 and the fastening portion 30. .. Behind the receiving portion 28 in the length direction, the inner diameter dimension of the grommet 14 is larger than the outer diameter dimension of the electric wire 12, and a space 40 is provided between the electric wire 12 and the grommet 14. As described above, since the direct contact portion of the grommet 14 with the electric wire 12 is limited to the receiving portion 28 which is short in the length direction, when the electric wire 12 is inserted into the through hole 20 of the grommet 14, the electric wire is inserted. The frictional resistance acting between the 12 and the grommet 14 is reduced.

Since the space 40 is provided between the electric wire 12 and the base 22 of the grommet 14 and the base end (rear end) of the cylinder 24, the cylinder 24 can be more freely deformed such as tilted with respect to the base 22. Allowed with degrees. Therefore, for example, by deforming the tubular portion 24 from the base end side, a large degree of freedom in the wiring path of the electric wire 12 can be obtained.

<Positioning member 42>
By the way, a positioning member 42 is attached to the electric wire 12. The positioning member 42 is a cylindrical member having a diameter dimension that can be extrapolated to the electric wire 12 as a whole, and is formed of, for example, a hard synthetic resin or the like. As shown in FIGS. 2 and 3, the positioning member 42 shown in the present embodiment is composed of a set of divided bodies 44. The divided body 44 has a semicircular cross section and has a curved plate shape extending linearly in the length direction. Then, a set of the divided bodies 44 are arranged so as to face each other in the vertical direction, and both ends of the set of the divided bodies 44 in the circumferential direction are overlapped with each other, so that the positioning member 42 having a tubular shape is formed. It is composed of a set of divided bodies 44. The inner hole of the positioning member 42 is formed between the facing surfaces of the set of divided bodies 44.

The positioning member 42 is attached to the electric wire 12 in an extrapolated state by superimposing a set of divided bodies 44 on the electric wire 12 from both sides in the vertical direction. As a result, the electric wire 12 penetrates the inner hole of the positioning member 42 formed between the facing surfaces of the set of divided bodies 44. By attaching a set of divided bodies 44 so as to sandwich the electric wire 12 to form the positioning member 42, the positioning member 42, which has been formed into a cylindrical shape in advance, is positioned rather than externally inserted into the electric wire 12 and moved in the length direction. The member 42 can be easily arranged at an appropriate position with respect to the electric wire 12. In particular, when the inner peripheral surface of the positioning member 42 is pressed against the outer peripheral surface of the electric wire 12, the friction between the positioning member 42 and the electric wire 12 is achieved by adopting the positioning member 42 having a divided structure as in the present embodiment. Wear of the insulating coating 18 due to resistance and sliding contact of the positioning member 42 is unlikely to be a problem.

In a state where a set of divided bodies 44 are superposed on the electric wire 12, the adhesive tape 46 is wound from the outer peripheral surface of the front end portion of the positioning member 42 to the outer peripheral surface of the portion adjacent to the positioning member 42 in the electric wire 12. As a result, the positioning member 42 is fixed to the outer peripheral surface of the electric wire 12 by the adhesive tape 46. The adhesive tape 46 is known to have a structure in which an adhesive layer is provided on one surface of a base material, and the adhesive layer adheres to the electric wire 12 and the positioning member 42 to fix the electric wire 12 and the positioning member 42. doing. Further, the set of the divided bodies 44 are connected to each other by the adhesive tape 46. Although not shown, the adhesive tape 46 is preferably wound on the outer peripheral surfaces of the electric wire 12 and the positioning member 42 in a laminated state in which the adhesive tape 46 is wound a plurality of times, whereby the adhesive tape 46 is positioned with the electric wire 12. The fixing strength, durability, water stopping property, etc. of the member 42 can be improved. The material for forming the adhesive tape 46 is not particularly limited, but it is preferable that the base material of the adhesive tape 46 is formed of a material having excellent water resistance that restricts the passage of water. Further, the adhesive tape 46 preferably has a pressure resistance enough to withstand the water pressure that can be applied to the adhesive tape 46, a corrosion resistance to the extent that deterioration due to contact with water does not become a problem, and the like.

The inner diameter of the positioning member 42 is larger than the outer diameter of the electric wire 12. As a result, the inner peripheral surface of the positioning member 42 and the outer peripheral surface of the electric wire 12 are separated from each other, and deterioration of the durability of the insulating coating 18 due to the positioning member 42 being pressed against the electric wire 12 is avoided. However, the inner diameter of the positioning member 42 may be equal to or less than the outer diameter of the electric wire 12, and the inner peripheral surface of the positioning member 42 and the outer peripheral surface of the electric wire 12 are in close contact with each other, so that the positioning member 42 and the electric wire are in close contact with each other. The water stopping performance may be improved between the twelve.

The positioning member 42 fixed to the electric wire 12 has a housed portion 48 to be accommodated in the through hole 20 of the grommet 14 at the rear portion of the positioning member 42, which is separated from the front end portion fixed to the electric wire 12 by the adhesive tape 46. Then, the accommodating portion 48 of the positioning member 42 is inserted from the first opening 36 into the through hole 20 of the grommet 14 at the fastening portion 30 of the tubular portion 24 of the grommet 14. Further, when the grommet 14 is arranged at a predetermined position in the length direction with respect to the electric wire 12, the rear end of the accommodating portion 48 of the positioning member 42 comes into contact with the receiving portion 28 of the grommet 14 in the length direction. It has become like. As a result, the operator who performs the work of passing the electric wire 12 to the grommet 14 makes contact between the positioning member 42 and the receiving portion 28 of the grommet 14 that the electric wire 12 has been inserted to an appropriate position with respect to the grommet 14. It can be grasped by the response of. Therefore, a special work for positioning the electric wire 12 and the grommet 14 in the length direction becomes unnecessary, and the wire passing work of the electric wire 12 becomes easy. By positioning the grommet 14 attached to the panel 32 with respect to the electric wire 12, the variation in the protruding length of the electric wire 12 from the panel 32 is suppressed on both sides of the panel 32. Therefore, workability can be improved in the work of connecting both ends of the electric wire 12 to a device (not shown). In the present embodiment, the rear end portion of the positioning member 42 that contacts the receiving portion 28 of the grommet 14 is the contact portion 50, and the contact portion 50 is a part of the accommodating portion 48 in the positioning member 42. ..

In the present embodiment, the receiving portion 28 of the grommet 14 projects into the through hole 20, and the contact portion 50 of the positioning member 42 and the receiving portion 28 of the grommet 14 hit each other in the through hole 20 of the grommet 14 in the length direction. I'm in contact. Therefore, the size of the wire harness 10 can be reduced as compared with the case where the contact portion and the receiving portion are provided outside the through hole 20.

<Fixing of grommet 14 and positioning member 42>
In a state where the grommet 14 is arranged at an appropriate position with respect to the electric wire 12, the fastening portion 30 of the grommet 14 and the accommodating portion 48 of the positioning member 42 are fixed by a binding band 52. The binding band 52 has a known structure in which a lock portion 56 is provided at one end of the band-shaped band portion 54, and the band portion 54 is locked when the band portion 54 is inserted into the lock portion 56 from the other end side. The portion 56 is prevented from coming off and is held in a ring shape. Then, the binding band 52 is wound around the outer peripheral surface of the fastening portion 30 of the grommet 14, and the fastening portion 30 is pressed against the accommodated portion 48 of the positioning member 42 by tightening the binding band 52, and the fastening portion 30 and the accommodated portion 30 are accommodated. The frictional resistance between the overlapping surfaces of the portions 48 increases. As a result, the fastening portion 30 and the accommodated portion 48 are positioned in a fixed state, and the accommodated portion 48 is prevented from coming off from the fastening portion 30.

In this way, the positioning member 42 fixed to the electric wire 12 by the adhesive tape 46 is fixed to the grommet 14 by the binding band 52, so that the electric wire 12 and the grommet 14 are indirectly connected to the grommet 14 via the positioning member 42. It is fixed to. Therefore, the electric wire 12 and the grommet 14 are held in an appropriate arrangement state by the positioning member 42.

The positioning member 42 is arranged on the side of the first opening 36 of the grommet 14 on the outside (O) side of the vehicle interior (O). Therefore, even if water enters between the electric wire 12 and the positioning member 42 or between the grommet 14 and the positioning member 42 from the outside (O) side of the vehicle interior, it is between the electric wire 12 and the positioning member 42 or between the grommet 14 and the positioning member 42. The water force is attenuated between. Therefore, strong water pressure is unlikely to act on the seal structure due to the close contact between the electric wire 12 and the receiving portion 28 of the grommet 14, and it is possible to prevent water from entering the vehicle interior (I) beyond the seal structure.

The positioning member 42 projects forward from the through hole 20 of the grommet 14, and the tip portion is located in front of the first opening 36 of the through hole 20 that opens at the front end of the tubular portion 24. As a result, the length of the positioning member 42 is increased, and the overlapping region of the electric wire 12 and the positioning member 42 is widened in the length direction. Therefore, when water enters between the electric wire 12 and the positioning member 42 from the outside (O) side of the vehicle interior, the momentum of the water is attenuated more effectively.

The electric wire 12 and the front end portion of the positioning member 42 are fixed by winding the adhesive tape 46. Therefore, the opening on the front side of the positioning member 42 through which the electric wire 12 is inserted is covered with the adhesive tape 46 and is not opened to the outside (O) of the vehicle interior (O). Therefore, even if water is splashed from the outside of the vehicle interior (O), it is difficult for the water to enter between the electric wire 12 and the positioning member 42, and the intrusion of water into the interior (I) of the vehicle is more effectively prevented. As described above, in the present embodiment, the adhesive tape 46 as a fixing member for fixing the electric wire 12 and the positioning member 42 restricts the ingress of water between the electric wire 12 and the positioning member 42 (water stoppage). Structure) is configured. Moreover, since the fixing of the electric wire 12 and the positioning member 42 and the prevention of water from entering between the electric wire 12 and the positioning member 42 are both realized by the adhesive tape 46, an increase in the number of parts becomes a problem. Nor.

Since the fastening portion 30 of the grommet 14 is pressed against the housing portion 48 of the positioning member 42 by the binding band 52, the space between the fastening portion 30 and the housing portion 48 is hermetically sealed. As a result, even if water splashes on the first opening 36 of the grommet 14 from the outside (O) side of the vehicle interior (O), the water passes between the fastening portion 30 of the grommet 14 and the accommodating portion 48 of the positioning member 42 in the vehicle interior ( It can be prevented from invading I).

<Embodiment 2>
FIG. 4 shows another specific example, the second embodiment. The wire harness 60 of the second embodiment has a structure in which the electric wire 12 is inserted through the grommet 62. In the following description, the members and parts substantially the same as those in the first embodiment are designated by the same reference numerals in the drawings, and the description thereof will be omitted.

<Grommet 62>
The grommet 62 includes a base 22 and a tubular portion 64 that projects forward from the base 22. The inner diameter of the tubular portion 64 is smaller than the inner diameter of the base 22 at least at the front end portion. Further, the tubular portion 64 is provided with an annular receiving portion 28 protruding toward the inner circumference at the front end.

<Electric wire 12 and positioning member 42>
An electric wire 12 is inserted through the grommet 62. In the present embodiment, the electric wire 12 is inserted into the through hole 20 of the grommet 62 from the second opening 38 on the base portion 22 side, which is the vehicle interior (I) side.

The positioning member 42 is fixed to the electric wire 12 in an extrapolated state. The positioning member 42 is fixed to the electric wire 12 by an adhesive tape 46. That is, the adhesive tape 46 is wound and attached to the outer peripheral surface of the portion of the electric wire 12 extending rearward from the positioning member 42 from the rear end portion of the positioning member 42, and the positioning member 42 is attached to the adhesive tape 46. Is fixed at a predetermined position of the electric wire 12.

Then, by inserting the electric wire 12 into the grommet 62 from the second opening 38, the positioning member 42 is inserted into the through hole 20 of the grommet 62, and the positioning member 42 is on the vehicle interior (I) side. It is arranged on the second opening 38 side of the grommet 62. The positioning member 42 of the present embodiment has a housing portion 48 to be inserted into the through hole 20 in front of the rear end portion to which the adhesive tape 46 is fixed. When the grommet 62 reaches a predetermined position with respect to the electric wire 12 in the length direction, the front end surface of the positioning member 42 inserted into the through hole 20 of the grommet 62 comes into contact with the receiving portion 28 of the grommet 62. As a result, the electric wire 12 and the grommet 62 can be positioned at predetermined relative positions in the length direction. In the positioning member 42 shown in the present embodiment, a contact portion 50 in contact with the receiving portion 28 of the grommet 62 is provided at the front end portion of the accommodating portion 48.

In the positioning member 42, at least the portion to which the adhesive tape 46 is fixed for fixing to the electric wire 12 protrudes rearward from the second opening 38 of the grommet 62. The positioning member 42 has at least a part of the insertion portion inserted into the tubular portion 64 in contact with the inner peripheral surface of the tubular portion 64. That is, the tubular portion 64 is a fastening portion 66 in which at least a portion adjacent to the receiving portion 28 has an inner diameter smaller than that of the base portion 22 and is in close contact with the outer peripheral surface of the positioning member 42. Then, the tubular portion 64 and the positioning member 42 are radially tightened and fixed by the binding band 52 that is externally fitted to the fastening portion 66, as in the first embodiment.

The positioning member 42 arranged on the vehicle interior (I) side of the grommet 62 penetrates the hole 34 of the panel 32 at the portion inserted into the base 22 of the grommet 62. The positioning member 42 is separated from the inner peripheral surface of the base 22 at a portion inserted through the base 22. Further, the distance between the outer peripheral surface of the positioning member 42 and the inner peripheral surface of the base portion 22 is made smaller than the minimum depth dimension of the fitting groove 26. As a result, when the base portion 22 tries to be deformed to the inner peripheral side, the inner peripheral surface of the base portion 22 comes into contact with the outer peripheral surface of the positioning member 42 before the mating between the panel 32 and the fitting groove 26 is released. The deformation of the base 22 toward the inner circumference is regulated by the positioning member 42. Therefore, it is difficult for the panel 32 and the fitting groove 26 to be disengaged, and the grommet 62 is difficult to fall off from the panel 32.

For example, in a state where the electric wire 12 is inserted through the through hole 20 of the grommet 62 and the positioning member 42 is not inserted into the through hole 20, the panel 32 is first fitted into the fitting groove 26 of the grommet 62. , The base 22 of the grommet 62 is attached to the panel 32. Next, the positioning member 42 is inserted into the through hole 20 of the grommet 62 attached to the panel 32. As a result, when the grommet 62 is attached to the panel 32, the deformation of the base 22 toward the inner circumference side is not restricted by the positioning member 42, and the grommet 62 can be easily attached to the panel 32.

Like the wire harness 60 shown in the second embodiment, the positioning member 42 fixed to the electric wire 12 in an extrapolated state is provided from the second opening 38 on the vehicle interior (I) side with respect to the through hole 20 of the grommet 62. It may be a structure to be inserted.

<Embodiment 3>
FIG. 5 shows another specific example, the third embodiment. The wire harness 70 of the third embodiment has a structure in which the electric wire 12 is inserted through the grommet 72. Compared to the grommet 14 shown in the first embodiment, the grommet 72 is not provided with a receiving portion 28 projecting to the inner circumference of the tubular portion 24.

A positioning member 74 is attached to the electric wire 12. The positioning member 74 includes a cylindrical main body portion 76 and a contact portion 78 projecting from the main body portion 76 to the outer periphery. In the present embodiment, the contact portion 78 has a circular ring plate shape that is continuous over the entire circumference, but may be partially provided in the circumferential direction. The contact portion 78 is located in the middle of the main body portion 76 in the length direction, but may be located, for example, at the end of the main body portion 76 in the length direction.

Then, the positioning member 74 is extrapolated to an appropriate position in the length direction with respect to the electric wire 12 and fixed to the electric wire 12 by the adhesive tape 46, similarly to the positioning member 42 shown in the first embodiment. The adhesive tape 46 is fixed to the front of the contact portion 78 of the positioning member 74, and the contact portion 78 projects at a position where the adhesive tape 46 is disengaged in the length direction.

The electric wire 12 to which the positioning member 74 is fixed is inserted from the first opening 36 side, which is the outside (O) side of the vehicle interior, with respect to the through hole 20 of the grommet 72. Further, the positioning member 74 is inserted into the tubular portion 24 of the grommet 72 at the accommodating portion 48 forming the rear portion of the contact portion 78 of the main body portion 76. Then, the tip surface of the tubular portion 24 of the grommet 72 comes into contact with the contact portion 78 in the length direction, so that the insertion amount of the electric wire 12 with respect to the grommet 72 is appropriately defined, and the grommet 72 has a length with respect to the electric wire 12. Positioned in the proper position in the direction. The tip of the tubular portion 24 of the grommet 72 in contact with the contact portion 78 of the positioning member 74 is the receiving portion 80 in the present embodiment. The protruding tip (outer peripheral end) of the contact portion 78 is located on the outer peripheral side of the outer peripheral surface of the receiving portion 80. As a result, the entire front end surface of the receiving portion 80 is in contact with the contact portion 78, and the contact area between the contact portion 78 and the receiving portion 80 is increased.

As described above, the receiving portion 80 of the grommet 72 can be configured by the tip portion of the tubular portion 24 when the contact portion 78 of the positioning member 74 projects to the outer periphery as in the present embodiment, and is not necessarily formed. The structure is not limited to a structure that projects toward the inner circumference of the tubular portion 24. Further, in the wire harness 70 of the present embodiment, the electric wire 12 and the grommet 72 are not in direct contact with each other, and the resistance when the electric wire 12 is inserted into the grommet 72 is further reduced.

<Embodiment 4>
FIG. 6 shows another specific example, the fourth embodiment. The wire harness 90 of the fourth embodiment has a structure in which the positioning member 92 is attached to the electric wire 12. The positioning member 92 includes a pressing protrusion 94 projecting from the inner peripheral surface. The pressing protrusion 94 of the present embodiment is hemispherical. The pressing protrusions 94 are provided on each of the set of divided bodies 44, and are provided at a plurality of positions in the positioning member 92 in the circumferential direction. In the portion where the pressing protrusion 94 is provided, the inner diameter dimension of the positioning member 92 is smaller than the outer diameter dimension of the insulating coating 18 in the electric wire 12 and larger than the outer diameter dimension of the core wire 16. The pressing protrusions 94 are provided at two positions separated from each other in the length direction.

Then, the positioning member 92 is attached to the electric wire 12 in an extrapolated state and is fixed by the adhesive tape 46, similarly to the positioning member 42 shown in the first embodiment. Further, in the positioning member 92, a pressing protrusion 94 projecting from the inner peripheral surface is pressed against the insulating coating 18 of the electric wire 12. The positioning member 92 is also positioned with respect to the electric wire 12 by the locking action of the pressing protrusion 94 being pressed against the insulating coating 18. That is, a set of divided bodies 44 constituting the positioning member 92 are superposed on the outer peripheral surface of the electric wire 12 so as to sandwich the electric wire 12 in the vertical direction orthogonal to the length direction, and the inner peripheral surface of each divided body 44 is overlapped. The pressing protrusion 94 protruding from the wire is pressed against the insulating coating 18 of the electric wire 12. Then, in a state where the pressing protrusion 94 bites into the insulating coating 18 of the electric wire 12, a set of the divided bodies 44 are mutually fixed by the adhesive tape 46, and the positioning member 92 is attached to the electric wire 12 as a set. It is composed of the divided body 44 of.

According to the wire harness 90 according to the present embodiment, the positioning member 92 is positioned more strongly with respect to the electric wire 12 by pressing the pressing protrusion 94 against the electric wire 12. Therefore, the positioning of the electric wire 12 and the grommet 14 by the contact between the contact portion 50 of the positioning member 92 and the receiving portion 28 of the grommet 14 is realized with higher reliability.

In the wire harness 90 according to the fourth embodiment, the hemispherical pressing protrusion 94 is illustrated, but the shape of the pressing protrusion is particularly limited as long as it is pressed against the insulating coating 18 of the electric wire 12. It's not something. Specifically, for example, as the pressing protrusion 96 shown in FIG. 7, the protrusion may extend in the circumferential direction. Preferably, the pressing protrusion 96 is continuously provided over the entire circumference of the positioning member. As a result, in addition to positioning the positioning member with respect to the electric wire by the locking action, the space between the positioning member and the electric wire is liquid-tightly sealed at the portion where the annular pressing protrusion 96 is pressed against the insulating coating of the electric wire. be able to. Although only one of the divided bodies 44 constituting the positioning member is shown in FIG. 7, the positioning member can be formed by arranging the set of divided bodies 44 so as to face each other with the electric wire interposed therebetween, as in the above embodiment. It is composed. In this case, the set of divided bodies 44 may be provided with pressing protrusions having different shapes from each other, or may be provided with pressing protrusions on only one of them.

Further, the pressing protrusion 94 may be a ridge or the like extending in a spiral shape, or may have a polygonal shape or the like whose cross-sectional shape is other than a semicircular shape. Further, the number and arrangement of the pressing protrusions 94 are not particularly limited.

<Other Embodiments>
The techniques described herein are not limited to the embodiments described above and in the drawings, and for example, the following embodiments are also included in the technical scope of the techniques described herein.

(1) In the grommet 14 of the first embodiment, only one tubular portion 24 is provided on one base 22, but a plurality of tubular portions 24 may be provided on one base 22. Since the grommet has a plurality of through holes 20, the wire harness 10 in this case includes a plurality of electric wires 12 to be inserted through the through holes 20. The positioning member 42 may be attached to some or all of the electric wires 12, or may be attached to only one electric wire 12.

(2) The grommet 14 of the first embodiment is attached to the panel 32 by fitting the panel 32 into the fitting groove 26 of the base 22, but the structure for attaching the grommet to the panel 32 is not particularly limited. .. For example, the bracket is overlapped from the outside (O) side of the vehicle interior with respect to the base 22 of the grommet 14 overlapped with the peripheral edge of the opening of the hole 34 in the panel 32 from the outside (O) side of the vehicle interior, and the bracket is fixed to the panel 32. By doing so, the base 22 may be sandwiched between the panel 32 and the bracket so that the grommet 14 can be attached to the panel 32.

(3) Fixing the grommet 14 and the positioning member 42 is not necessarily limited to fastening and fixing with a binding band 52. For example, the grommet 14 and the positioning member 42 can be fixed by winding an adhesive tape around the tube portion 24 of the grommet 14 and the positioning member 42.

(4) Fixing the electric wire 12 and the positioning member 42 is not necessarily limited to tape winding fixing with the adhesive tape 46, and for example, an adhesive may be used. Further, the electric wire 12 and the positioning member 42 may be fixed without specially providing a fixing member such as the adhesive tape 46, and in that case, the adhesive tape 46 may not be provided.

(5) The positioning member 42 is not necessarily limited to a divided structure in which a set of divided bodies 44 is combined, for example, a cylindrical shape that is continuous over the entire circumference, a C-shaped ring that is continuous over a length exceeding half a circumference in the circumferential direction, and the like. It may be an integral structure of. Further, the set of divided bodies 44 may have a length of less than half a circumference in the circumferential direction, and in a state where the set of divided bodies 44 are arranged facing each other to form the positioning member 42, the set of divided bodies 44 is formed. The circumferential ends of 44 may be separated from each other in the circumferential direction. Further, the positioning member 42 may have a structure divided into three or more in the circumferential direction.

(6) The set of divided bodies 44 constituting the positioning member 42 may be independent of each other as in the above embodiment, but for example, as in the positioning member 100 shown in FIG. 8, the set of divided bodies 44 is divided. The bodies 44 may be connected to each other by a hinge portion 102 at one end in the circumferential direction. In this case, the cylindrical positioning member 100 is configured by closing the other ends of the set of the divided bodies 44 in the circumferential direction so as to approach each other. The positioning member 100 is provided with a connecting portion 104 that connects and holds the other end of the set of the divided bodies 44 in the circumferential direction in a closed state. As a result, the set of divided bodies 44 do not need to be fixed to each other by the adhesive tape 46 or the like, and are held in a state in which the cylindrical positioning member 100 is configured.

(7) When the positioning member 42 is composed of a set of divided bodies 44 or three or more divided bodies, the shapes of the divided bodies may be different from each other. Specifically, for example, the length in the circumferential direction, the length in the axial direction, the cross-sectional shape, and the like may be different from each other.

10 Wire harness (Embodiment 1)
12 Electric wire 14 Grommet 16 Core wire 18 Insulation coating 20 Through hole 22 Base part 24 Cylinder part 26 Fitting groove 28 Receiving part 30 Fastening part 32 Panel (attached body)
34 Hole 36 First opening 38 Second opening 40 Space 42 Positioning member 44 Divided body 46 Adhesive tape (tape member)
48 Accommodated portion 50 Contact portion 52 Binding band 54 Band portion 56 Lock portion 60 Wire harness (Embodiment 2)
62 Grommet 64 Cylinder 66 Fastening 70 Wire harness (Embodiment 3)
72 Grommet 74 Positioning member 76 Main body 78 Contact 80 Receiving 90 Wire harness (Embodiment 4)
92 Positioning member 94 Pressing protrusion 96 Pressing protrusion (Embodiment 5)
100 Positioning member (Embodiment 6)
102 Hinge part 104 Connecting part

Claims

With electric wires
A grommet having a through hole through which the electric wire penetrates,
A positioning member fixed to the outer peripheral surface of the electric wire is provided.
The positioning member has a contact portion that contacts the grommet in the length direction of the electric wire.
The grommet is a wire harness having a receiving portion that contacts the contact portion in the length direction.
The positioning member has a housing portion to be housed in the through hole provided in the grommet.
The contained portion has the contact portion and has the contact portion.
The wire harness according to claim 1, wherein the receiving portion of the grommet protrudes from the inner peripheral surface of the through hole.
The wire harness according to claim 2, wherein the receiving portion provided on the grommet is pressed against the outer peripheral surface of the electric wire.
The positioning member is composed of a set of divided bodies arranged to face each other.
The wire harness according to any one of claims 1 to 3, wherein the electric wire penetrates between the set of divided bodies.
With an adhesive tape with an adhesive layer,
The adhesive tape is wound and fixed to the outer peripheral surface of the electric wire and the outer peripheral surface of the end portion of the positioning member protruding from the grommet.
The wire harness according to any one of claims 1 to 4, wherein the positioning member is fixed to the electric wire by the adhesive tape.
The grommet has a first opening that is arranged outside the vehicle interior when mounted on the body to be attached.
The wire harness according to any one of claims 1 to 5, wherein the positioning member is arranged on the first opening side of the grommet.
The grommet has a second opening that is arranged on the vehicle interior side when mounted on the body to be attached.
The wire harness according to any one of claims 1 to 5, wherein the positioning member is arranged on the second opening side of the grommet.
The positioning member has a pressing protrusion that protrudes from the inner peripheral surface.
The wire harness according to any one of claims 1 to 7, wherein the pressing protrusion is pressed against the outer peripheral surface of the electric wire.