JP2018186623A - Grommet and wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grommet or the like which can arrange electric wires with desired paths without requiring a vehicle body fixing part and difficult and troublesome work, and also, can easily deal with an arrangement change of peripheral parts.SOLUTION: A grommet 10 closing a wire through hole 2 of a vehicle body panel 1 through which an electric wire W penetrates, includes: a grommet body 11 which covers the electric wire W on one side of the vehicle body panel 1 and is brought into close contact with the peripheral edge of the wire through hole 2; an inner protector 20 formed of a member having higher rigidity than the grommet body 11 and arranged inside the grommet body 11; and a path regulating member 30 rotatably supported by the inner protector 20 and regulating a path of the electric wire W pulled out to the other end side of the vehicle body panel 1.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a grommet that closes an electric wire through hole of a vehicle body panel through which an electric wire penetrates, and a wire harness having the grommet.

  Conventionally, various grommets have been proposed (for example, Patent Document 1). One conventional example of such a grommet is shown in FIGS. 5 to 8, a wire through hole 2 is formed in the vehicle body panel 1. An electric wire W is passed through the electric wire through hole 2. A grommet 100 is attached to the outer periphery of the electric wire W. The grommet 100 includes a grommet main body 101 formed of a flexible material (for example, rubber material), and an inner protector 110 that is disposed inside the grommet main body 101 and formed of a material that is higher in rigidity than the grommet main body 101. .

  The grommet body 101 has a lip portion 102 formed on the contact surface side of the vehicle body panel 1. The inner protector 110 is provided with a plurality of panel locking claws 111 at intervals in the circumferential direction. The grommet 100 is attached to the vehicle body panel 1 by sandwiching the outer peripheral edge of the wire through hole 2 of the vehicle body panel 1 by the panel locking claws 111 and the lip portion 102. The lip portion 102 is in close contact with the outer peripheral edge of the wire through hole 2 of the vehicle body panel 1 by the clamping force of the panel locking claw 111 and the lip portion 102 to the vehicle body panel 1.

  The grommet body 101 is formed with a wire holding cylinder portion 103 on the side opposite to the contact surface of the vehicle body panel 1. The electric wire holding cylinder 103 and the portion of the electric wire W drawn to the outside from this are wound with a tape T. The inner surface of the electric wire holding cylinder portion 103 is in close contact with the outer periphery of the electric wire W.

  In this way, the grommet 100 mounted from one side of the vehicle body panel 1 has the wire through hole 2 for routing the electric wire W over the space 3 on one side and the space 4 on the other side of the vehicle body panel 1. It is waterproof.

  By the way, as shown in FIG. 8, the electric wire W drawn from the electric wire through hole 2 to the other side of the vehicle body panel 1 avoids interference with a desired routing route, that is, the peripheral component 140, and the peripheral component 140. It is necessary to route along a routing route that can secure the necessary clearance G between the two. Therefore, conventionally, the tape T is wound around the electric wire W, the clip 120 is mounted on the tape T, the clip 120 is fixed to the vehicle body (not shown), and the electric wire W is forced to a desired path. The route was restricted.

Japanese Patent Laid-Open No. 2006-10165

  However, in the conventional example, the clip 120 which is a vehicle body fixing component is used in order to provide a routing route in which the electric wire W can avoid interference with the peripheral component 140 and can secure the necessary clearance G with the peripheral component 140. It is necessary, and the work of fixing the clip 120 to the vehicle body is very difficult and troublesome.

  In addition, depending on the type of vehicle and the like, the arrangement position of the peripheral component 140 may be different. In this case, the fixing position of the clip 120 to the vehicle body must be changed, and there is a problem that it cannot be easily handled. .

  Therefore, the present invention has been made to solve the above-described problems, and does not require a vehicle body fixing part, and can arrange an electric wire in a desired route without performing a difficult and troublesome work. Moreover, it aims at providing the wire harness which has a grommet and a grommet which can respond easily also to arrangement | positioning change of peripheral components.

  The present invention relates to a grommet that closes a wire through hole of a vehicle body panel through which an electric wire penetrates, a grommet body that covers the wire on one side of the vehicle body panel and is in close contact with the periphery of the wire through hole, and a member that is more rigid than the grommet body An inner protector disposed inside the grommet body, and a path regulating member that is rotatably supported by the inner protector and regulates the path of the electric wire drawn to the other end of the vehicle body panel. is there.

  According to the present invention, the path regulating member is attached to the grommet, and the path regulating member regulates the path of the electric wire drawn to the other end side of the vehicle body panel, that is, the electric line can be routed as desired. Further, when the arrangement position of the peripheral parts is changed, it can be dealt with by changing the direction of the path regulating member with respect to the inner protector. As described above, the vehicle body fixing parts are not necessary, and it is possible to route the electric wires along a desired route without performing difficult and troublesome work, and in addition, it is possible to easily cope with the change in the arrangement of the peripheral parts.

1 shows an embodiment of the present invention and is an exploded perspective view of a grommet. FIG. 1 shows an embodiment of the present invention and is a perspective view of a grommet. FIG. FIG. 3 shows an embodiment of the present invention and is a cross-sectional view taken along line AA in FIG. 2. 1 shows an embodiment of the present invention and is a plan view of a grommet. FIG. It is a disassembled perspective view of a grommet which shows a prior art example. It is a perspective view of a grommet which shows a prior art example. FIG. 7 is a cross-sectional view taken along the line BB in FIG. 6 showing a conventional example. It is a side view explaining a prior art example and explaining that a grommet is arranged with a necessary clearance between peripheral parts while avoiding interference with peripheral parts.

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

(One embodiment)
1 to 4 show an embodiment of the present invention. 1 to 3, the vehicle body panel 1 is formed with a circular electric wire through hole 2. An electric wire (electric wire assembly) W of the wire harness is passed through the electric wire through hole 2. The electric wire W of the wire harness is routed across the space 3 (shown in FIG. 3) and the space 4 (shown in FIG. 3) on the other side of the vehicle body panel 1 by passing through the electric wire through hole 2. . The wire harness has a grommet 10 attached to the outer periphery of the electric wire W. The grommet 10 closes the wire through hole 2 of the vehicle body panel 1. Hereinafter, the configuration of the grommet 10 will be described in detail.

  The grommet 10 is attached to the electric wire through hole 2 from the space 3 on one side of the vehicle body panel 1. The grommet 10 includes a grommet main body 11 formed of a flexible material (for example, rubber material), an inner protector 20 that is disposed inside the grommet main body 11 and is formed of a material that is higher in rigidity than the grommet main body 11, and an inner protector 20. And a path regulating member 30 supported by the robot.

  The grommet main body 11 has a cylindrical shape in which the electric wire W is routed. The grommet main body 11 is provided on the inner diameter side of the large diameter cylindrical portion 12 having the inner fitting groove 13 and the large diameter cylindrical portion 12 on the vehicle body panel 1 side. The lip portion 15 and the electric wire holding cylinder portion 19 provided on the opposite side of the large-diameter cylinder portion 12 to the vehicle body panel 1 side are provided, and these are integrally provided. The large diameter cylindrical portion 12 has a larger diameter than the wire through hole 2. The inner fitting groove 13 is formed over the entire circumference of the large diameter cylindrical portion 12. The outer peripheral edge of the inner protector 20 is fitted in the inner fitting groove 13. Thereby, the grommet main body 11 and the inner protector 20 are being fixed. Further, the shape of the grommet main body 11, particularly the large-diameter cylindrical portion 12, is maintained by the inner protector 20.

  The lip portion 15 protrudes from the outer peripheral surface of the large-diameter cylindrical portion 12 on the vehicle body panel 1 side. The lip portion 15 is formed by an inner peripheral lip portion 16 and an outer peripheral lip portion 17. The inner peripheral lip portion 16 and the outer peripheral lip portion 17 are continuously formed over the entire circumference of the large diameter cylindrical portion 12.

  Before the grommet 10 is attached to the electric wire through-hole 2, the inner peripheral lip portion 16 protrudes toward the central axis direction from the root, and the tip side thereof is inclined in a direction to open outward with respect to the central axis. The outer peripheral lip portion 17 projects in a direction to open outward with respect to the central axis direction. In a state where the grommet 10 is mounted in the electric wire through hole 2, the inner peripheral lip portion 16 and the outer peripheral lip portion 17 are elastically deformed in a direction to fall on the outer peripheral surface of the large-diameter cylindrical portion 12, and the electric wire through hole of the vehicle body panel 1. 2 is closely attached to the peripheral surface. This prevents water or the like from entering the grommet 10 through the gap between the one side surface of the vehicle body panel 1 and the lip portion 15. 2 and 3, the inner peripheral lip portion 16 and the outer peripheral lip portion 17 show a state before the grommet 10 is attached to the electric wire through hole 2.

  The electric wire holding cylinder portion 19 has an inner diameter that is slightly smaller than or substantially the same as the outer diameter of the electric wire W. The electric wire holding cylinder part 19 abuts on the outer peripheral surface of the electric wire W over a predetermined length, and a tape (not shown) is wound around the outer peripheral surface of the electric wire holding cylinder part 19. This prevents water and the like from entering the grommet 10 through the gap between the inner surface of the wire holding cylinder 19 and the outer peripheral surface of the wire W.

  The electric wire holding cylinder part 19 is formed of a flexible material (for example, a rubber material) as described above. Thereby, the electric wire holding cylinder part 19 can be bent and deformed together with the electric wire W, and the electric wire W drawn out to the space 4 (the mounting side of the grommet 10) on the one side of the vehicle body panel 1 within a range in which the electric wire can be deformed is a desired path. It is possible to arrange with.

  The inner protector 20 is formed of a pair of inner members 21 that are assembled together. Each inner member 21 includes a semicircular inner main body portion 22 as viewed from above, and a flange portion 28 protruding outward from the inner main body portion 22. The inner main body portion 22 is provided at a semicircular side wall 23, an upper regulating wall portion 24 provided toward the inner circumferential side from the semicircular side wall 23, and a lower position spaced from the upper regulating wall portion 24. The lower regulation wall part 25 is provided. Each inner main body portion 22 is formed with a semicircular arc-shaped fitting groove 26 surrounded by the upper restriction wall portion 24 and the lower restriction wall portion 25. In a state where the pair of inner members 21 are combined, a circular groove shape is formed by the two fitting grooves 26.

  Each upper regulating wall portion 24 is formed with a semicircular cutout 27 as viewed from above. In the state in which the pair of inner members 21 are combined, a circular cutout shape is formed by the two cutout portions 27.

  A lock portion 29 is provided in the vicinity of the combined surface of each inner member 21. The pair of inner members 21 are locked by the lock portions 29 in a state where the combined surfaces are abutted with each other.

  Panel locking claws 29 </ b> A are provided at intervals on the outer peripheral surface of each semicircular side wall 23. Each panel latching claw 29 </ b> A can be elastically deformed in a direction in which the tip side approaches the semicircular side wall 23. The vehicle body panel 1 is sandwiched between the plurality of panel locking claws 29 </ b> A of the inner protector 20 and the lip portion 15 of the grommet body 11. With this clamping force, the grommet 10 is mounted in the electric wire through hole 2 of the vehicle body panel 1.

  The path regulating member 30 is formed of a material having rigidity capable of maintaining at least its own form with the electric wire W accommodated therein. The path regulating member 30 is a cylindrical body that houses the electric wire W therein. The path regulating member 30 extends along a desired routing direction of the electric wire W. Specifically, the path regulating member 30 is bent at a location near the proximal end fixed to the inner protector 20, and extends straight from the bent location to the distal end in an oblique direction.

  The path regulation member 30 includes a pair of path regulation division bodies 31 and 33 connected to each other via a hinge part 32 and a base collar part 34 attached to the base end part of the pair of path regulation division bodies 31 and 33. I have. Each of the path regulation division bodies 31 and 33 is a semi-cylindrical body, and can be combined and separated by the hinge portion 32. The pair of path regulation division bodies 31 and 33 is formed with an electric wire housing chamber 35 therein. When the pair of path regulation division bodies 31 and 33 are changed from the separated state to the combined state, the pair of path regulation division bodies 31 and 33 are locked by the mutual engaging portions 36 of the pair of path regulation division bodies 31 and 33 and the combined state is maintained. A tongue piece 31 a for winding a tape protrudes from the tip of one of the path regulation division bodies 31.

  The path regulating member 30 has a base flange 34 fitted in a circumferential fitting groove 26 of the inner protector 20 (a pair of combined inner main body portions 22), and the tip end side of the base flange 34 is an inner side. It protrudes outside from the circular cutout 27 of the protector 20 (a pair of upper restriction wall portions 24 combined). Therefore, as shown in FIG. 4, the path regulating member 30 is rotatably supported by the inner protector 20 with the wall surface surrounding the fitting groove 26 and the surface of the notch 27 serving as a guide surface.

  The path regulating member 30 has its base flange 34 fitted into the circumferential fitting groove 26 of the inner protector 20 with almost no gap, and the pair of path regulating divided bodies 31 and 33 are also formed of circular cutouts 27. It is in contact with the surface with almost no gap. As a result, the path regulating member 30 is rotatably supported while being prevented as much as possible from being displaced in the horizontal direction or displaced in the swinging direction. The path regulating member 30 is configured to be able to rotate 360 degrees with respect to the inner protector 20.

  The path regulating member 30 can freely change the direction of the routing direction of the electric wire W by rotation with respect to the inner protector 20.

  Next, the assembly procedure of the grommet 10 will be described. The electric wire W is accommodated in the path regulating member 30. That is, the pair of path regulation division bodies 31 and 33 are separated from each other, the electric wires W are routed inside, and the pair of path regulation division bodies 31 and 33 are combined.

  Next, the path regulating member 30 is attached to the inner protector 20. That is, the base flange 34 of the path regulating member 30 is set between the pair of inner members 21, and the pair of inner members 21 are united while the base flange 34 is fitted in the fitting grooves 26 of the pair of inner members 21.

  Next, the inner protector 20 is fitted to the grommet body 11 through which the electric wire W is passed. That is, the large-diameter cylindrical portion 12 of the grommet body 11 is elastically deformed in a direction to expand, and the flange portion 28 of the inner protector 20 is fitted into the inner fitting groove 13 of the grommet body 11. Thus, the grommet 10 is attached to the electric wire W.

  Next, the electric wire W is passed through the electric wire through hole 2 of the vehicle body panel 1, and the grommet 10 is pushed into the electric wire through hole 2 from the space 3 on one side of the vehicle body panel 1 with the path regulating member 30 as the insertion tip side. Then, the path regulating member 30 protrudes from the wire through hole 2 into the space 4 on the other side of the vehicle body panel 1, and then the inner protector 20 enters the wire through hole 2. Here, each panel locking claw 29A of the inner protector 20 abuts on the peripheral edge of the wire through-hole 2, but each panel locking claw 29A is elastically deformed and insertion of the inner protector 20 into the wire through-hole 2 is allowed. . When the inner protector 20 is inserted to the insertion completion position, each panel locking claw 29A is elastically restored and locked to the peripheral edge on the opposite side of the wire through hole 2 of the vehicle body panel 1. The vehicle body panel 1 is sandwiched between the plurality of panel locking claws 29 </ b> A and the lip portion 15 of the grommet body 11. With this clamping force, the grommet 10 is attached to the electric wire through hole 2 of the vehicle body panel 1.

  As described above, the grommet 10 is formed of the grommet main body 11 that covers the electric wire W on one side of the vehicle body panel 1 and is in close contact with the periphery of the electric wire through hole 2, and a member that is more rigid than the grommet main body 11. An inner protector 20 disposed inside the grommet main body 11, and a path regulating member 30 that is rotatably supported by the inner protector 20 and regulates the path of the electric wire W drawn to the other end side of the vehicle body panel 1. Yes. In this way, the path regulating member 30 is attached to the grommet 10, and the path regulating member 30 regulates the path of the electric wire W drawn to the other end side of the vehicle body panel 1 so that the electric wire W can be routed in a desired path. More specifically, the electric wire W drawn to the other side of the vehicle body panel 1 can be a routing route that can avoid interference with peripheral components and can secure a necessary clearance with the peripheral components. As described above, the vehicle body fixing component (for example, clip) is not required as in the conventional example, and the electric wire W can be routed through a desired route without performing a difficult and troublesome work.

  Moreover, since the path | route control member 30 is rotatable with respect to the inner protector 20, as shown in FIG. 4, the electric wire extraction direction of the path | route control member 30 can be changed freely. Therefore, when the arrangement position of the peripheral parts is changed, it can be easily handled by changing the direction of the path regulating member 30 with respect to the inner protector 20.

  The path regulating member 30 is a cylindrical body that houses the electric wire W therein. Therefore, the path regulating member 30 has a protection function (protector function) for the electric wire W.

  The path regulating member 30 is formed of one member. Therefore, workability is good.

(Modification)
In the above embodiment, the path regulating member 30 is configured to be able to rotate 360 degrees with respect to the inner protector 20, but angle regulating means for regulating the rotation angle range of the path regulating member 30 may be provided. Thereby, it can prevent that the electric wire W is routed in the state twisted 1 turn or more.

  In the embodiment, a rotation lock mechanism for the path regulating member 30 may be provided. After the path regulating member 30 is rotated to a desired rotation position, the path regulating member 30 is locked so that it cannot rotate. Thereby, it is possible to prevent the path regulating member 30 from rotating due to the vibration of the vehicle and the like and interfering with the peripheral parts.

In the above embodiment, the inner protector 20 is composed of a pair of separated inner members 21, but may be composed of a pair of inner members connected via a hinge portion. When the pair of inner members 21 are connected, workability such as wire arrangement is better.
In the above-described embodiment, the path regulating member 30 is a cylindrical body, but the path regulating member 30 may be, for example, a rectangular cylinder as long as the path regulating member 30 is rotatably supported by the inner protector 20. .

  In the embodiment, the tape winding tongue 31a protrudes from the tip of one of the path regulation division bodies 31. However, it is not always necessary to provide the tape winding tongue 31a.

DESCRIPTION OF SYMBOLS 1 Body panel 2 Electric wire through-hole 10 Grommet 11 Grommet main body 20 Inner protector 30 Path control member W Electric wire

Claims (4)

In the grommet that closes the wire through hole of the vehicle body panel through which the wire penetrates,
A grommet body that covers the electric wire on one side of the vehicle body panel and is in close contact with a peripheral edge of the electric wire through hole;
An inner protector formed from a member having higher rigidity than the grommet body, and disposed inside the grommet body;
A grommet comprising a path regulating member that is rotatably supported by the inner protector and regulates a path of the electric wire drawn out to the other end side of the vehicle body panel. The grommet according to claim 1,
An angle restricting means for restricting a rotation range of the path restricting member is provided. The grommet according to claim 1,
The grommet characterized in that the path regulating member is a cylindrical body that accommodates the electric wire therein.   A wire harness comprising the grommet according to any one of claims 1 to 3.

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