JP2021132471A - Wiring harness - Google Patents

Abstract

To disclose a wiring harness with a novel structure, capable of easily positioning an electric wire and a grommet at an appropriate position to a length direction of the electric wire.SOLUTION: A wiring harness comprises: a grommet 12 attached to an attachment receiving body 34; an electric wire 14 inserted into the grommet 12; and a positioning member 54 fixed to an outer peripheral surface of the electric wire 14. The grommet 12 includes: a base part 18 contacting the attachment receiving body 34; and a cylinder part 20 projected from the base part 18. The cylinder part 20 is provided with a housing part 22 having a partially increased inner diameter dimension, and the positioning member 54 is housed in the housing part 22.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a wire harness in which a grommet is provided at a portion of an electric wire to be inserted into an attached body.

Conventionally, the electric wire constituting the electric system of an automobile may be a wire harness provided with a grommet for preventing water or the like from entering the vehicle interior at a portion 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 attached to the panel so as to cover the through hole provided in the panel of the vehicle.

By the way, the grommet is attached to the panel of the vehicle and is not only positioned with respect to the panel but also fitted to the outer surface of the electric wire to such an extent that it can prevent the passage of water or the like. Is also positioned in the length direction of the wire.

Japanese Unexamined Patent Publication No. 2004-166431

However, when the electric wire is inserted into the grommet and the grommet is attached to the electric wire, it is difficult to arrange the grommet at an appropriate position with respect to the electric wire. If the grommet is not mounted in the proper position with respect to the wire, the wire will be longer than necessary on one side of the grommet and shorter than necessary on the other side. As a result, it was considered that both ends of the electric wire could not be connected to a device such as a battery or an inverter when the grommet was attached to the panel of the vehicle.

Therefore, a wire harness having a novel structure capable of easily positioning the electric wire and the grommet in an appropriate position in the length direction of the electric wire will be disclosed.

The wire harness of the present disclosure includes a grommet attached to the attached body, an electric wire inserted through the grommet, and a positioning member fixed to the outer peripheral surface of the electric wire, and the grommet comes into contact with the attached body. A wire harness having a base portion and a tubular portion protruding from the base portion, the tubular portion is provided with an accommodating portion having a partially enlarged inner diameter, and the positioning member is accommodated in the accommodating portion. ..

According to the present disclosure, the wire and the grommet can be easily positioned at appropriate positions in the length direction of the wire.

FIG. 1 is a perspective view showing the wire harness according to the first embodiment in a state of being mounted on a panel. FIG. 2 is a cross-sectional view showing the wire harness shown in FIG. 1 in a state of being mounted on the panel, and is a view corresponding to the II-II cross section of FIG. FIG. 3 is a cross-sectional view showing the wire harness shown in FIG. 2, which corresponds to the cross section III-III of FIG. FIG. 4 is a cross-sectional view showing the wire harness according to the second embodiment in a state of being mounted on the panel. FIG. 5 is a cross-sectional view showing a wire harness according to the third embodiment. FIG. 6 is a right side view showing the wire harness according to the fourth 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) A grommet attached to the attached body, an electric wire inserted through the grommet, and a positioning member fixed to the outer peripheral surface of the electric wire are provided, and the grommet has a base portion in contact with the attached body and the base portion. A wire harness having a tubular portion protruding from the tube, the tubular portion is provided with an accommodating portion having a partially enlarged inner diameter, and the positioning member is accommodated in the accommodating portion.

According to the wire harness of the present disclosure, the resistance at the time of wire passage due to the contact of the positioning member with the cylinder portion becomes small when the positioning member enters the accommodating portion having a large inner diameter dimension. Further, when the positioning member accommodated in the accommodating portion abuts on the inner surface of the wall of the accommodating portion in the length direction of the electric wire, the resistance when moving the electric wire with respect to the grommet in the length direction increases. Therefore, an operator or the like who inserts the electric wire into the grommet can grasp that the positioning member is housed in the accommodating portion based on the change in the resistance (response) of the wire passing work. Therefore, if the positioning member is fixed at an appropriate position in the length direction of the electric wire with respect to the electric wire, the electric wire and the grommet can be inserted into the grommet until the position where the positioning member enters the accommodating portion. It can be properly positioned in the vertical direction.

(2) A tape member provided with an adhesive layer to be attached to the outer peripheral surface of the electric wire is provided, and the positioning member is provided by winding the tape member around the outer peripheral surface of the electric wire in a laminated state. preferable. By winding the tape member around the outer peripheral surface of the electric wire in a laminated state, it is possible to easily form a positioning member that protrudes in a stepped shape on the outer peripheral surface of the electric wire. Since the tape member is flexible and does not have a sharp edge, when the positioning member is inserted while spreading the grommet, or when the electric wire swings due to the vibration input and the positioning member is pressed against the grommet. , Hard to damage the grommet.

(3) In the above (1), a binding band having a band-shaped portion and a lock portion integrally formed at one end of the strip-shaped portion in the length direction is provided, and the positioning member is bound to the outer peripheral surface of the electric wire. It is preferable that it is composed of the above-mentioned binding band. By wrapping the binding band around the outer peripheral surface of the electric wire, a positioning member protruding from the outer peripheral surface of the electric wire can be easily configured. Since the height of the binding band protruding from the outer peripheral surface of the electric wire at the lock portion is large, the binding band can be configured without laminating positioning members having a sufficient height.

(4) The tubular portion has a connecting portion extending from the accommodating portion to the base portion side, and the accommodating portion is adjacent to the connecting portion and faces the positioning member in the length direction of the electric wire. It is preferable that the base end side wall portion has a portion and the thickness of the base end side wall portion is thicker than the thickness of the connecting portion.

Since the base end side wall portion of the accommodating portion is thicker than the connecting portion of the tubular portion, deformation of the base end side wall portion is suppressed when the positioning member is pressed against the base end side wall portion, and positioning is performed. It is possible to obtain a large response due to the contact between the member and the side wall portion of the base end. Therefore, it is possible to effectively grasp that the positioning member is located at the end on the base side in the accommodating portion by a response. Further, it may be possible to restrict the positioning member from coming out from the accommodating portion toward the base portion by locking the positioning member and the proximal side wall portion.

(5) In any of the above (1) to (3), the tubular portion has a connecting portion extending from the accommodating portion toward the base portion, and the thickness of the connecting portion is at least a part in the circumferential direction. It is preferable that the thickness is larger than the thickness of the outer peripheral wall portion of the accommodating portion.

In the grommet, the connecting portion of the tubular portion is thicker than the outer peripheral wall portion of the accommodating portion, so that the displacement and deformation of the accommodating portion due to the deformation of the connecting portion can be suppressed. Therefore, when the positioning member moves toward the base and comes into contact with the inner surface of the wall of the accommodating portion, the electric wire and the grommet can be held in an appropriate position by locking the positioning member and the inner surface of the wall of the accommodating portion. ..

(6) In the above (5), the tubular portion has a sealing portion extending from the accommodating portion to the side opposite to the base portion, and the thickness of the connecting portion is larger than the thickness of the outer peripheral wall portion of the accommodating portion. It is preferable that the thickness of the connecting portion is thicker than the thickness of the sealing portion in the thickened circumferential direction.

In the grommet tube, the connecting portion on the base side of the accommodating portion is thicker than the sealing portion on the opposite side of the accommodating portion, so that the accommodating portion is displaced due to deformation of the connecting portion. And deformation are suppressed. Therefore, when the positioning member moves toward the base and comes into contact with the inner surface of the wall of the accommodating portion, the electric wire and the grommet can be held in an appropriate position by locking the positioning member and the inner surface of the wall of the accommodating portion. .. Further, since the sealing portion is thinner than the connecting portion, when the electric wire is inserted into the grommet cylinder portion from the side opposite to the base portion, the positioning member can easily pass while expanding the sealing portion. , It becomes easy to insert the electric wire into the grommet to the position where the positioning member is accommodated in the accommodating portion.

In addition, in the above (5) or the above (6), the accommodating portion has a proximal side wall portion that is adjacent to the connecting portion and faces the positioning member in the length direction of the electric wire, and the proximal side wall portion of the basic end side wall portion. The configuration of (4) above, in which the thickness is thicker than the thickness of the connecting portion, can also be adopted in combination.

(7) In any of the above (1) to (5), the tubular portion has a sealing portion extending from the accommodating portion to the side opposite to the base portion, and the accommodating portion is adjacent to the sealing portion. It is preferable that the positioning member and the tip side wall portion facing each other in the length direction of the electric wire are provided, and the thickness of the tip side wall portion is thicker than the thickness of the sealing portion.

Since the tip side wall portion of the accommodating portion is thicker than the sealing portion of the tubular portion, deformation of the tip side wall portion is suppressed when the positioning member is pressed against the tip side wall portion, and the positioning member and the positioning member It is possible to obtain a great response by contacting the tip side wall portion. Therefore, it is possible to effectively grasp that the positioning member is located at the end opposite to the base portion in the accommodating portion by a response. Further, it may be possible to restrict the positioning member from coming out from the accommodating portion to the side opposite to the base portion by locking the positioning member and the tip side wall portion.

In addition, in the circumferential direction in which the thickness of the connecting portion is thicker than the thickness of the outer peripheral wall portion of the accommodating portion in the above (7), the thickness of the connecting portion is made thicker than the thickness of the sealing portion. It is also possible to adopt the above configuration (6) in combination.

(8) It is preferable that the grommet has a rib that reinforces the accommodating portion. By increasing the deformation rigidity of the wall portion of the accommodating portion by the ribs, for example, it is possible to prevent the impact when the positioning member comes into contact with the wall portion of the accommodating portion from being excessively mitigated by the deformation of the accommodating portion. , It is possible to grasp that the positioning member is housed in the housing part by the response. Further, when the positioning member moves in the length direction of the electric wire in the accommodating portion, the positioning member is locked to the wall portion of the accommodating portion to prevent the positioning member from coming off from the accommodating portion, and the electric wire and the electric wire. The grommet can be held in the proper position.

(9) It is preferable that the positioning member is in contact with the inner surface of the wall of the accommodating portion. Since the positioning member is positioned in contact with the accommodating portion, the relative displacement amount between the electric wire and the grommet is more effectively limited.

<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. The wire harness 10 of the first embodiment includes a grommet 12 attached to a vehicle panel 34 (described later) and an electric wire 14 penetrating the grommet 12. 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. 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 the other members.

<Grommet 12>
The grommet 12 is formed of an elastic body such as rubber. The grommet 12 has an inner hole 16 penetrating in the front-rear direction, and has a cylindrical shape as a whole. The grommet 12 includes a base 18 and a cylinder 20. The base portion 18 has an annulus plate shape as a whole, and its rear end (right end in FIG. 2) is superposed on the panel 34 of the vehicle described later in contact with the panel 34. The tubular portion 20 is integrally formed with the base portion 18 and extends forward from the inner peripheral end portion of the base portion 18. The tubular portion 20 includes a housing portion 22 having a partially large diameter in the middle in the length direction (left-right direction in FIG. 2). The tubular portion 20 has a connecting portion 24 between the base portion 18 and the accommodating portion 22. The tubular portion 20 has a sealing portion 26 extending forward from the accommodating portion 22.

<Accommodation unit 22>
The accommodating portion 22 includes a cylindrical outer peripheral wall portion 28, an annular base end side wall portion 30 projecting from the rear end portion of the outer peripheral wall portion 28 toward the inner peripheral side and adjacent to the connecting portion 24, and a front end of the outer peripheral wall portion 28. An annular tip side wall portion 32 that protrudes from the portion toward the inner peripheral side and is adjacent to the sealing portion 26 is provided. Therefore, the accommodating portion 22 has a groove-shaped cross section that opens toward the inner circumference, and the inner hole 16 is partially enlarged inside the accommodating portion 22. The inner diameter dimension of the accommodating portion 22 is partially increased in the length direction of the tubular portion 20, and has a substantially constant inner diameter dimension in the circumferential direction. However, the inner diameter dimension of the accommodating portion 22 may change in the circumferential direction, and may be partially increased in the circumferential direction, for example. The inner diameter of the tubular portion 20 is made larger than the inner diameter of the connecting portion 24 and the sealing portion 26 in the accommodating portion 22.

The thickness dimension t1 of the outer peripheral wall portion 28 is smaller than the thickness dimension t2 of the base end side wall portion 30 and the thickness dimension t3 of the tip side wall portion 32. In the present embodiment, the thickness dimension t2 of the base end side wall portion 30 and the thickness dimension t3 of the tip end side wall portion 32 are substantially the same.

<Connecting part 24>
The connecting portion 24 has a cylindrical shape having a diameter smaller than that of the outer peripheral wall portion 28 of the accommodating portion 22, and extends from the inner peripheral end portion of the base end side wall portion 30 toward the base portion 18. The connecting portion 24 extends forward from the inner peripheral end portion of the base portion 18. The thickness dimension t2 of the base end side wall portion 30 of the accommodating portion 22 is made larger than the thickness dimension t4 of the connecting portion 24.

<Sealing part 26>
The sealing portion 26 has a cylindrical shape having a diameter smaller than that of the outer peripheral wall portion 28 of the accommodating portion 22, and extends forward from the inner peripheral end portion of the tip side wall portion 32. The connecting portion 24 and the sealing portion 26 have substantially the same diameter. The thickness dimension t3 of the tip side wall portion 32 of the accommodating portion 22 is made larger than the thickness dimension t5 of the sealing portion 26. The thickness dimension t5 of the sealing portion 26 of the present embodiment is substantially the same as the thickness dimension t4 of the connecting portion 24. The sealing portion 26 of the present embodiment is shorter than the connecting portion 24, but the sealing portion 26 may be longer than the connecting portion 24. In short, the accommodating portion 22 may be located on the base 18 side with respect to the center of the tubular portion 20 in the length direction, or may be located on the side opposite to the base 18.

<Panel 34>
As shown in FIG. 2, the grommet 12 has a base 18 superimposed on a panel 34 as an attached body. The panel 34 is a member that constitutes the body and chassis of the vehicle and partitions the inside of the vehicle from the external space, and is composed of, for example, a metal plate. The panel 34 is provided with a through hole 36 that penetrates in the thickness direction. The panel 34 is provided with a plurality of bolt holes 38 penetrating in the thickness direction on the outer peripheral side of the through holes 36.

<Bracket 40>
The base 18 of the grommet 12 is fixed to the panel 34 by the bracket 40. The bracket 40 is made of metal and has a stepped annulus plate shape as a whole. The outer peripheral portion of the bracket 40 is a panel mounting portion 42 that is overlapped with the panel 34. The inner peripheral portion of the bracket 40 is located in front of the panel mounting portion 42, and is a holding portion 44 facing away from the panel 34. Bolt holes 46 are formed in the panel mounting portion 42 at a plurality of locations in the circumferential direction. The panel mounting portion 42 of the bracket 40 is bolted to the panel 34 by bolts 48 penetrating the bolt holes 46 of the bracket 40 and the bolt holes 38 of the panel 34.

Then, the grommet 12 is attached to the panel 34 by sandwiching the base 18 of the grommet 12 in the front-rear direction between the sandwiching portion 44 of the bracket 40 and the facing surface of the panel 34. The inner hole 16 of the grommet 12 is positioned and communicates with the through hole 36 of the panel 34. Therefore, the grommet 12 is attached to the peripheral edge of the opening of the through hole 36 of the panel 34.

<Electric wire 14>
An electric wire 14 penetrates through the inner hole 16 of the grommet 12. The electric wire 14 is an insulated electric wire in which an insulating coating such as a synthetic resin is provided on the outside of a core wire composed of a single wire or a stranded wire of a conductor. The core wire and the insulating coating of the electric wire 14 are formed of a known general material.

<Positioning member 54>
A positioning member 54 is attached to the electric wire 14. The positioning member 54 is partially provided in the length direction of the electric wire 14, is fixed to the outer peripheral surface of the electric wire 14, and is provided so as to project from the electric wire 14 to the outer periphery. The positioning member 54 of the present embodiment is formed by winding a tape member 58 having an adhesive layer 56 on the inner peripheral surface around an electric wire 14. The positioning member 54 has an annular shape that is continuously provided over the entire circumference of the electric wire 14 in the circumferential direction. The positioning member 54 is fixedly positioned with respect to the electric wire 14 in the front-rear direction, which is the length direction of the electric wire 14, by fixing the adhesive layer 56 of the tape member 58 to the outer peripheral surface of the electric wire 14.

When the positioning member 54 is formed by the tape member 58, the tape member 58 is preferably wound in a laminated state so as to be overlapped a plurality of times on the outer peripheral surface of the electric wire 14. Thereby, by winding the thin-walled tape member 58, the positioning member 54 having a sufficiently large height dimension in the radial direction of the electric wire 14 can be provided. Preferably, the tape member 58 is laminated in 3 to 4 layers and wound around the electric wire 14, so that the positioning member 54 having a height dimension of about 1 mm to 2 mm is provided. However, the number of laminated tape members 58 is appropriately set according to the required height dimension of the positioning member 54, the thickness of the tape member 58, and the like. In other words, since the positioning member 54 is composed of the tape member 58 wound around the electric wire 14 and laminated, the height dimension of the positioning member 54 can be easily adjusted by the number of laminated tape members 58. can. In the drawing, the height dimension of the positioning member 54 is exaggerated for the sake of visibility.

In the present embodiment, the width dimension of the electric wire 14 in the length direction of the positioning member 54 is the same as or slightly larger than the distance between the facing surfaces of the base end side wall portion 30 and the tip end side wall portion 32 of the accommodating portion 22. Has been done. The width dimension of the positioning member 54 may be smaller than the distance between the facing surfaces of the base end side wall portion 30 and the tip end side wall portion 32.

<Penetration of electric wire 14 through grommet 12>
The electric wire 14 penetrates the inner hole 16 of the grommet 12. The base portion 18, the connecting portion 24, and the sealing portion 26 of the grommet 12 have an inner diameter slightly smaller than the outer diameter of the electric wire 14, and are pressed against the outer peripheral surface of the electric wire 14 to be in close contact with each other. As a result, the outer peripheral surface of the electric wire 14 and the inner peripheral surface of the grommet 12 are hermetically sealed. For example, by wrapping a band, adhesive tape, or the like around the outer peripheral surface of the sealing portion 26, the sealing portion 26 is pressed against the outer peripheral surface of the electric wire 14 to improve the adhesion of the sealing portion 26 to the electric wire 14 and to prevent water stopping. It can also be improved.

The positioning member 54 provided on the outer peripheral surface of the electric wire 14 is housed in the accommodating portion 22 of the tubular portion 20. The positioning member 54 is in contact with the inner surface of the wall of the accommodating portion 22 composed of the base end side wall portion 30 and the tip end side wall portion 32 in the accommodating state in the accommodating portion 22. Preferably, the positioning member 54 housed in the accommodating portion 22 is pressed against the base end side wall portion 30 and the tip side wall portion 32 in a pressure contact state, and is sandwiched between the base end side wall portion 30 and the tip side wall portion 32. .. Further, the positioning member 54 housed in the accommodating portion 22 is separated from the inner peripheral surface of the wall of the accommodating portion 22 composed of at least a part of the outer peripheral wall portion 28 on the inner peripheral side, and the positioning member 54 and the outer peripheral wall portion are separated. A space is provided between the 28. However, the positioning member 54 may be separated from at least one of the base end side wall portion 30 and the tip end side wall portion 32 or may be in contact with the outer peripheral wall portion 28 in the state of being accommodated in the accommodating portion 22.

<Positioning of electric wire 14 and grommet 12 by positioning member 54>
The positioning member 54 projecting from the outer peripheral surface of the electric wire 14 is strongly pressed against the inner peripheral surface of the tubular portion 20 when passing through the inner circumference of the sealing portion 26 or the connecting portion 24 in the tubular portion 20 of the grommet 12. This creates a great deal of resistance. When the positioning member 54 passes through the inner circumference of the sealing portion 26 or the connecting portion 24 and enters the inner circumference of the accommodating portion 22, the pressing of the positioning member 54 against the inner peripheral surface of the tubular portion 20 is reduced or released. Therefore, when the positioning member 54 enters the inner circumference of the accommodating portion 22, the resistance caused by pressing the positioning member 54 against the inner peripheral surface of the tubular portion 20 is reduced. Therefore, the operator who inserts the electric wire 14 into the inner hole 16 of the grommet 12 grasps that the positioning member 54 has been inserted into the accommodating portion 22 due to the change in the response when the electric wire 14 is pushed against the grommet 12. It can be known that the electric wire 14 has been inserted to an appropriate position with respect to the grommet 12.

Further, for example, when the electric wire 14 is inserted into the inner hole 16 of the grommet 12 from the front, the positioning member 54 hits the base end side wall portion 30, so that the insertion operator of the electric wire 14 completes the insertion work. It can also be known from the response due to the contact between the 54 and the base end side wall portion 30.

The positioning member 54 and the base end side wall portion 30 are engaged with each other in the length direction of the electric wire 14 so that the electric wire 14 can be positioned with respect to the grommet 12 in the insertion direction. According to this, it is possible to prevent the electric wire 14 from being further pushed and moved from an appropriate position with respect to the grommet 12, and the grommet 12 can be held at an appropriate position with respect to the electric wire 14.

The base end side wall portion 30 of the accommodating portion 22 is thicker than the connecting portion 24, and the deformation rigidity is increased. As a result, when the positioning member 54 comes into contact with the base end side wall portion 30, the deformation of the base end side wall portion 30 is suppressed, and the positioning member 54 is made difficult to come off from the accommodating portion 22. Further, the base end side wall portion 30 is thicker than the sealing portion 26, and the deformation rigidity is increased. As a result, the positioning member 54 is thin and easily passes through the inner circumference of the sealing portion 26 which is relatively easily deformed, and the positioning member 54 which has entered the accommodating portion 22 has a relatively thick base end. It is stably positioned and held by abutting on the side wall portion 30.

The electric wire 14 may be inserted through the grommet 12 from the base 18 side toward the front, and in that case, the resistance due to the positioning member 54 being pressed against the inner peripheral surface of the connecting portion 24 is positioned. It is reduced or eliminated by accommodating the member 54 in the accommodating portion 22. Further, when the electric wire 14 is inserted into the grommet 12 from the base 18 side, the positioning member 54 comes into contact with the tip side wall portion 32 of the accommodating portion 22, so that the insertion position is notified by a response and the positioning is performed by locking. The effect is exhibited.

The tip side wall portion 32 of the accommodating portion 22 is thicker than the sealing portion 26, and the deformation rigidity is increased. As a result, when the positioning member 54 comes into contact with the tip side wall portion 32, the deformation of the tip side wall portion 32 is suppressed, and the positioning member 54 is made difficult to come off from the accommodating portion 22. Further, the tip side wall portion 32 is thicker than the connecting portion 24, and the deformation rigidity is increased. As a result, the positioning member 54 is thin and easily passes through the inner circumference of the connecting portion 24 which is relatively easily deformed, and the positioning member 54 which has entered the accommodating portion 22 is a tip side wall portion which is relatively thick. The positioning is stably held by the contact with the 32.

As described above, when the electric wire 14 is inserted into the grommet 12, the electric wire 14 can be easily inserted to an appropriate position with respect to the grommet 12. In other words, the grommet 12 can be mounted at an appropriate position with respect to the electric wire 14 in an extrapolated state.

In the present embodiment, the width dimension of the positioning member 54 in the front-rear direction is the same as or slightly larger than the distance between the facing surfaces of the base end side wall portion 30 and the tip end side wall portion 32 in the accommodating portion 22. Then, the positioning member 54 accommodated in the accommodating portion 22 is in contact with both the base end side wall portion 30 and the tip end side wall portion 32. As a result, the positioning member 54 is prevented from moving in the front-rear direction in the accommodating portion 22, and the electric wire 14 and the grommet 12 are positioned more firmly.

The positioning member 54 is formed by winding the tape member 58 around the electric wire 14, and has a certain degree of flexibility. Therefore, when the positioning member 54 moves while pushing the grommet 12 apart, damage to the grommet 12 due to contact with the positioning member 54 is unlikely to occur. Further, the protruding height of the positioning member 54 from the electric wire 14 can be easily adjusted by adjusting the thickness of the tape member 58 and the number of layers.

<Embodiment 2>
FIG. 4 shows another specific example, the second embodiment. 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.

The wire harness 60 of the second embodiment includes a grommet 62. The grommet 62 has a base 18 and a tubular portion 64 that projects from the base 18 toward the side opposite to the panel 34. The tubular portion 64 is provided with an accommodating portion 22 in an intermediate portion in the front-rear direction, and is provided with a connecting portion 66 between the accommodating portion 22 and the base portion 18.

<Connecting part 66>
The outer diameter dimension of the connecting portion 66 is the same as the outer diameter dimension of the accommodating portion 22. The inner diameter of the connecting portion 66 is the same as the inner diameter of the base end side wall portion 30 of the accommodating portion 22. The connecting portion 66 has a thickness dimension t6 in the same radial direction as the base end side wall portion 30, and extends from the base end side wall portion 30 toward the base portion 18. In the present embodiment, the base end side wall portion 30 of the accommodating portion 22 and the connecting portion 66 are integrated.

The thickness dimension t6 of the connecting portion 66 is made larger than the thickness dimension t1 of the outer peripheral wall portion 28 of the accommodating portion 22. The thickness dimension t6 of the connecting portion 66 is made larger than the thickness dimension t5 of the sealing portion 26. The thickness dimension t6 of the connecting portion is made larger than the thickness dimension t3 of the tip side wall portion 32 of the accommodating portion 22.

In the present embodiment, the thickness dimension of the connecting portion 66 is substantially constant over the entire circumference, but the connecting portion 66 may have different thickness dimensions in the circumferential direction. In this case, it is desirable that the connecting portion 66 is thicker than the outer peripheral wall portion 28 of the accommodating portion 22 in at least a part in the circumferential direction. More preferably, the connecting portion 66 whose thickness dimension changes in the circumferential direction is thicker than the sealing portion 26 in a portion thicker than the outer peripheral wall portion 28 of the accommodating portion 22. ..

According to the wire harness 60 having such a grommet 62, the connecting portion 66 is thicker than the outer peripheral wall portion 28, so that the base end side wall portion 30 of the accommodating portion 22 is thickened. It is provided integrally with 66, and the deformation rigidity of the base end side wall portion 30 is further increased. Therefore, when the positioning member 54 hits the base end side wall portion 30, the deformation of the base end side wall portion 30 is suppressed, and the positioning of the electric wire 14 and the grommet 62 is effectively performed by locking the positioning member 54 and the base end side wall portion 30. It will be realized.

Since the connecting portion 66 is thick, the displacement of the base end side wall portion 30 due to the deformation of the connecting portion 66 is suppressed, and the positioning member 54 and the base end side wall portion 30 are locked to each other. It is difficult to release due to the displacement of.

Since the connecting portion 66 is thicker than the sealing portion 26, if the electric wire 14 is inserted into the grommet 62 from the side opposite to the base 18, the sealing portion 26 having a relatively thin wall can be inserted. The positioning member 54 easily passes through the circumference, and the work of inserting the electric wire 14 into the grommet 62 becomes easy.

<Embodiment 3>
FIG. 5 shows another specific example, the third embodiment. In the wire harness 70 of the third embodiment, the positioning member 72 fixedly provided on the outer peripheral surface of the electric wire 14 is composed of a binding band 74. The binding band 74 has a structure in which a lock portion 78 is integrally formed at one end of the band-shaped portion 76 in the length direction.

The strip-shaped portion 76 is made of synthetic resin or the like and has flexibility. The strip-shaped portion 76 has a length that can be wound around the outer peripheral surface of the electric wire 14. The lock portion 78 has a tubular shape, and a strip-shaped portion 76 extends from a part in the circumferential direction. Then, by inserting the band-shaped portion 76 into the lock portion 78, the strip-shaped portion 76 is prevented from coming off from the lock portion 78. Therefore, the binding band 74 is held in an annular shape by inserting the band-shaped portion 76 into the lock portion 78.

The binding band 74 is attached to the outer peripheral surface of the electric wire 14 by winding the band-shaped portion 76 at a predetermined position in the length direction of the electric wire 14. The strip-shaped portion 76 wound around the electric wire 14 is inserted through the lock portion 78 so that the strip-shaped portion 76 is firmly attached to the outer peripheral surface of the electric wire 14 with a tightening margin. The binding band 74 is provided so as to project from the outer peripheral surface of the electric wire 14, and is fixedly positioned with respect to the electric wire 14. As a result, the positioning member 72 projecting from the outer peripheral surface of the electric wire 14 is formed by the binding band 74.

The electric wire 14 to which the binding band 74 is attached is inserted into the grommet 12. Then, the positioning member 72 by the binding band 74 is accommodated in the accommodating portion 22 of the grommet 12. Similar to the above embodiment, when the electric wire 14 is inserted into the grommet 12, the positioning member 72 moves to the accommodating portion 22 while expanding the inner hole 16 of the grommet 12, and as shown in FIG. 5, the accommodating portion 72. It is housed in 22. Until the positioning member 72 reaches the accommodating portion 22, a large resistance is generated due to the positioning member 72 being pressed against the inner peripheral surface of the grommet 12 when the electric wire 14 is inserted. When the positioning member 72 enters the accommodating portion 22, the pressing of the positioning member 72 against the inner peripheral surface of the grommet 12 is reduced or released. Therefore, the worker engaged in the work of inserting the electric wire 14 into the grommet 12 can grasp that the positioning member 72 has been accommodated in the accommodating portion 22 due to the change in response, whereby the electric wire 14 has the electric wire 14 with respect to the grommet 12. It can be grasped that it has been inserted to an appropriate position.

Since the positioning member 72 is a binding band 74, the positioning member 72 having a sufficient height can be easily configured without winding it around the electric wire 14 many times. In the binding band 74, the height of the positioning member 72 is sufficiently secured in the lock portion 78 because the height of protrusion from the electric wire 14 is large in the lock portion 78 through which the band-shaped portion 76 is inserted.

<Embodiment 4>
FIG. 6 shows another specific example, the fourth embodiment. The wire harness 80 of the fourth embodiment has a grommet 82. The grommet 82 includes a first rib 84 as a rib for reinforcing the base end side wall portion 30 of the accommodating portion 22, and a second rib 86 as a rib for reinforcing the tip side wall portion 32 of the accommodating portion 22.

<1st rib 84>
The first rib 84 has a plate shape that extends in a direction intersecting the circumferential direction of the grommet 82. The first rib 84 projects from the base end side wall portion 30 toward the base portion 18 side, and is integrally formed continuously with the connecting portion 24. The protrusion height dimension of the first rib 84 from the connecting portion 24 in the radial direction of the grommet 82 gradually decreases from the base end side wall portion 30 toward the base portion 18 side. Four of the first ribs 84 are arranged at substantially equal intervals in the circumferential direction of the grommet 82.

<2nd rib 86>
The second rib 86 has a plate shape that extends in an intersecting direction with respect to the circumferential direction of the grommet 82. The second rib 86 projects from the tip side wall portion 32 toward the side opposite to the base portion 18, and is integrally formed continuously with the sealing portion 26. The protrusion height dimension of the second rib 86 from the sealing portion 26 in the radial direction of the grommet 82 gradually decreases from the tip side wall portion 32 toward the side opposite to the base portion 18. Four of the second ribs 86 are arranged at substantially equal intervals in the circumferential direction of the grommet 82. In the present embodiment, the first rib 84 and the second rib 86 have a plane-symmetrical shape with respect to a plane orthogonal to the length direction of the grommet 82, but the first rib 84 and the second rib 86 have different shapes. It may be. Further, the first rib 84 and the second rib 86 may be arranged differently from each other in the circumferential direction of the grommet 82.

As described above, in the grommet 82 of the present embodiment, the deformation rigidity of the base end side wall portion 30 of the accommodation portion 22 is enhanced by the first rib 84, and the deformation rigidity of the tip side wall portion 32 of the accommodation portion 22 is first. It is enhanced by the rib 84. As a result, when the positioning member 54 accommodated in the accommodating portion 22 is pressed against the proximal side wall portion 30 or the distal side wall portion 32, the positioning member 54 is locked to the proximal side wall portion 30 or the distal side wall portion 32. The positioning member 54 is prevented from coming off from the accommodating portion 22. As a result, the electric wire 14 to which the positioning member 54 is fixed is prevented from moving relative to the grommet 82 in the length direction, and the electric wire 14 and the grommet 82 are held at appropriate positions with each other.

The shape of the ribs is not particularly limited, and the number, arrangement, size, etc. of the ribs are appropriately changed according to the required deformation rigidity of the accommodating portion 22. Only one of the first rib 84 that reinforces the base end side wall portion 30 of the accommodating portion 22 and the second rib 86 that reinforces the tip side wall portion 32 of the accommodating portion 22 may be provided. For example, by providing only the first rib 84, it is possible to prevent the deformation of the sealing portion 26 from being restrained by the second rib 86 when the positioning member 54 passes through, so that the positioning member 54 can be inserted into the sealing portion 26. While improving, it is possible to reinforce the base end side wall portion 30 by the first rib 84.

<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) The positioning member is formed by the tape member 58 and the binding band 74, and can also be formed by, for example, fitting a ring member to the outer peripheral surface of the electric wire 14.

(2) For example, in a grommet, a plurality of tubular portions 20 may be provided on one base portion 18. When a plurality of tubular portions 20 are provided, the accommodating portion 22 may be provided for at least one tubular portion 20, but is preferably provided for each tubular portion 20.

(3) The positioning member 54 may be in contact with at least a part of the inner surface of the wall of the accommodating portion 22 in a state of being accommodated in the accommodating portion 22, or may be entirely separated from the inner surface of the wall of the accommodating portion 22. .. For example, the outer peripheral surface of the positioning member 54 may be in contact with the outer peripheral wall portion 28 of the accommodating portion 22.

(4) Positioning members 54 are provided at a plurality of locations in the length direction of the electric wire 14, and accommodating portions 22 are provided at a plurality of locations in the length direction of the tubular portion 20 of the grommet 12, and the plurality of positioning members 54 are accommodated in a plurality of locations. It may be accommodated in the part 22. According to this, for example, when a force in the length direction acts between the electric wire 14 and the grommet 12, the displacement of the position of the electric wire 14 with respect to the grommet 12 is caused between the plurality of positioning members 54 and the plurality of accommodating portions 22. Effectively prevented by locking.

(5) The thickness dimension and the cross-sectional shape of the connecting portion and the sealing portion of the grommet may change in the length direction. Further, the thickness dimension of the partition wall portion of the accommodating portion does not have to be constant.

(6) For example, when the sealing function is realized in the connecting portion 24, the sealing portion 26 can be eliminated. In this case, the inner diameter of the accommodating portion 22 is preferably larger than the inner diameter of the connecting portion 24. Further, when the sealing portion 26 is provided, the inner diameter dimension of the accommodating portion 22 may be smaller than the inner diameter dimension of the sealing portion 26.

(7) The grommet is attached to the panel by, for example, the base being fitted into the through hole of the panel and the outer peripheral end of the base and the inner peripheral end of the through hole being locked in the through hole penetration direction. It can also be attached without using a bracket. Further, the base portion of the grommet is not limited to one having a clear difference in shape such as a large diameter with respect to the tubular portion.

10 Wire harness (Embodiment 1)
12 Grommet 14 Wire 16 Inner hole 18 Base 20 Cylinder 22 Accommodating part 24 Connecting part 26 Sealing part 28 Peripheral wall part 30 Base end side wall part 32 Tip side wall part 34 Panel 36 Through hole 38 Bolt hole 40 Bracket 42 Panel mounting part 44 Holding portion 46 Bolt hole 48 Bolt 54 Positioning member 56 Adhesive layer 58 Tape member 60 Wire harness (Embodiment 2)
62 Grommet 64 Cylinder 66 Connecting 70 Wire harness (Embodiment 3)
72 Positioning member 74 Binding band 76 Band-shaped portion 78 Lock portion 80 Wire harness (Embodiment 4)
82 Grommet 84 1st rib (rib)
86 2nd rib (rib)

Claims (9)

The grommet that can be attached to the attached body and
The electric wire inserted through the grommet and
A positioning member fixed to the outer peripheral surface of the electric wire is provided.
The grommet has a base portion that comes into contact with the attached body and a tubular portion that protrudes from the base portion.
The tubular portion is provided with a housing portion having a partially increased inner diameter.
A wire harness in which the positioning member is housed in the housing portion. A tape member having an adhesive layer attached to the outer peripheral surface of the electric wire is provided.
The wire harness according to claim 1, wherein the positioning member is provided by winding the tape member around the outer peripheral surface of the electric wire in a laminated state. A binding band having a band-shaped portion and a lock portion integrally formed at one end of the strip-shaped portion in the length direction is provided.
The wire harness according to claim 1, wherein the positioning member is composed of the binding band bound to the outer peripheral surface of the electric wire. The tubular portion has a connecting portion extending from the accommodating portion toward the base portion.
The accommodating portion has a proximal side wall portion that is adjacent to the connecting portion and faces the positioning member in the length direction of the electric wire.
The wire harness according to any one of claims 1 to 3, wherein the thickness of the base end side wall portion is thicker than the thickness of the connecting portion. The tubular portion has a connecting portion extending from the accommodating portion toward the base portion.
The wire harness according to any one of claims 1 to 3, wherein the thickness of the connecting portion is thicker than the thickness of the outer peripheral wall portion of the accommodating portion in at least a part in the circumferential direction. The tubular portion has a sealing portion extending from the accommodating portion to the side opposite to the base portion.
The fifth aspect of claim 5, wherein the thickness of the connecting portion is thicker than the thickness of the sealing portion in the circumferential direction in which the thickness of the connecting portion is thicker than the thickness of the outer peripheral wall portion of the accommodating portion. Wire harness. The tubular portion has a sealing portion extending from the accommodating portion to the side opposite to the base portion.
The accommodating portion has a tip side wall portion that is adjacent to the sealing portion and faces the positioning member in the length direction of the electric wire.
The wire harness according to any one of claims 1 to 5, wherein the thickness of the tip side wall portion is thicker than the thickness of the sealing portion. The wire harness according to any one of claims 1 to 7, wherein the grommet has a rib for reinforcing the accommodating portion. The wire harness according to any one of claims 1 to 8, wherein the positioning member is in contact with the inner surface of the wall of the accommodating portion.

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