JP2023177000A - Grommet and wire harness - Google Patents

Abstract

To provide a grommet which exhibits excellent operability when engaging a route regulation unit on both sides of a through-hole with an inner member.SOLUTION: A grommet 10 holds an electric wire W which penetrates a through-hole 2 in an attachment target member (a vehicle panel 1). The grommet 10 includes: a first grommet body 11 having a first route regulation unit 20 and a first annular attachment unit 22 with a first opening unit; and a second grommet body 12 having a second route regulation unit 30 and a second annular attachment unit 32 with a second opening unit larger than the first opening unit. The grommet 10 includes an inner member 13 formed into round by using a more rigid material than the first grommet body 11 and the second grommet body 12 and engaged with the through-hole 2. The inner member 13 is arranged between an outer peripheral surface 22a of the first annular attachment unit 22 and an inner peripheral surface 32b of the second annular attachment unit 32 while the outer peripheral surface 22a of the first annular attachment unit 22 and the inner peripheral surface 32b of the second annular attachment unit 32 face each other.SELECTED DRAWING: Figure 4

Description

The present invention relates to a grommet and a wire harness.

BACKGROUND ART Conventionally, when an electric wire is passed through a through hole formed in a plate material, there is a grommet attached to the peripheral edge of the through hole in order to protect the electric wire from the peripheral edge of the through hole. Patent Document 1 discloses that when an electric wire is passed through a through hole in a vehicle body panel as a member to be attached, a grommet body that holds the electric wire, and an inner member that supports the grommet body and is held at the peripheral edge of the through hole. Discloses a technology related to a grommet provided with the grommet. This grommet includes a cylindrical grommet main body and attachment parts that are attached to the through holes at both ends of the grommet main body, and a wire harness is inserted into the inside of the grommet. The attachment part holds a locking member (inner member) that locks the vehicle body panel, and the end of the grommet body has a cylindrical curved part (path regulating part) that is curved relative to the attachment part. ) is provided.

JP 2017-127087 Publication

In the grommet disclosed in Patent Document 1, since the above-mentioned path regulating portion is provided only on one side of the through hole, the setting of the path restricting portion on both one side and the other side of the through hole improves the sound insulation performance. Unable to respond when necessary for improvement, etc. In addition, if it is necessary to set route regulating parts on both one side and the other side of the through hole to improve sound insulation performance, etc., both the route regulating parts on one side and the other side of the through hole should be installed inside the through hole. It is necessary to have a structure that is easy to work with when fitting into a member.

The present invention has been made in view of the problems of the prior art. An object of the present invention is to provide a grommet with excellent workability when fitting both path regulating portions on one side and the other side of a through hole to an inner member, and a wire harness using the grommet. .

A grommet according to an aspect of the present invention is a grommet that holds an electric wire passing through a through hole in an attached member, and includes a first path regulating portion that regulates the path of the electric wire pulled out to one side of the attached member; a first grommet body having a first annular attachment part having a first opening; a second route regulation part regulating the route of the electric wire pulled out to the other side of the attached member; and a second route regulation part larger than the first opening. A second grommet body having a second annular attachment portion having a second opening, and an inner ring formed in an annular shape using a material having higher rigidity than the first grommet body and the second grommet body, and fitted into the through hole. a member, with the outer circumferential surface of the first annular attachment portion and the inner circumferential surface of the second annular attachment portion facing each other, the inner member is arranged so that the outer circumferential surface of the first annular attachment portion and the inner circumferential surface of the second annular attachment portion face each other. and the inner peripheral surface.

A wire harness according to an aspect of the present invention includes the above-mentioned grommet.

According to the present invention, it is possible to provide a grommet with excellent workability when fitting both path regulating portions on one side and the other side of a through hole to an inner member, and a wire harness using the grommet.

It is a perspective view showing an example of the grommet concerning this embodiment. It is an exploded view of the grommet concerning this embodiment. It is a top view of the grommet concerning this embodiment. 4 is a cross-sectional view taken along line AA in FIG. 3. FIG. 5 is an enlarged view of section B in FIG. 4. FIG. It is a perspective view showing an example of a grommet concerning other embodiments. FIG. 7 is an exploded view of a grommet according to another embodiment. FIG. 7 is a plan view of a grommet according to another embodiment.

Hereinafter, the grommet according to this embodiment will be described in detail using the drawings. Note that the dimensional ratios in the drawings are exaggerated for convenience of explanation and may differ from the actual ratios.

FIG. 1 is a perspective view of grommet 10 according to one embodiment, FIG. 2 is an exploded view of grommet 10 according to one embodiment, and FIG. 3 is a top view of grommet 10 according to one embodiment. . 4 is a sectional view taken along line AA in FIG. 3, showing the grommet 10 according to one embodiment, and FIG. 5 is an enlarged view of section B in FIG. 4.

As an example, a grommet 10 shown in FIGS. 1 to 5 is attached to the peripheral edge of a through hole 2 formed in a vehicle body panel 1 as a member to be attached, and an electric wire W passed through the through hole 2 is connected to the through hole 2. protect from the periphery of the The opening shape of the through hole 2 is an ellipse in this embodiment. The electric wire W may be a wire harness as an electric wire assembly. In the following description, the upper side refers to the side facing the through hole 2 when the grommet 10 is attached to the peripheral edge of the through hole 2, and the lower side refers to the opposite side.

The vehicle body panel 1 is, for example, a floor panel of a vehicle. A through hole 2 is formed in the vehicle body panel 1, passing through one side of the vehicle body panel 1 (inside the vehicle interior) and the other side (outside the vehicle interior) of the vehicle body panel 1.

The grommet 10 includes a first grommet body 11, a second grommet body 12, and an inner member 13. The first grommet main body 11 and the second grommet main body 12 are cylindrical members that route and hold the electric wire W on the inner peripheral side, and are made of a flexible material such as a rubber material. On the other hand, the inner member 13 is also called a grommet inner, an inner protector, an edge protector, etc., and is made of a material having higher rigidity than the first grommet body 11 and the second grommet body 12, such as synthetic resin. .

The first grommet main body 11 is arranged on the interior side (above the floor) of the automobile. The first grommet body 11 has a first route regulating part 20 that regulates the route of the electric wire W pulled out to the space 3 on the inside of the vehicle, and an end of the first grommet body 11 on the opposite side from the vehicle body panel 1 side. It has a first electric wire holding cylinder part 21 provided therein. The first grommet body 11 also has a first annular attachment portion 22 provided at the end of the first grommet body 11 on the vehicle body panel 1 side.

The first path regulating section 20 is a hollow body that accommodates the electric wire W therein, and regulates the path of the electric wire W accommodated in the internal space 23 to maintain the bent state. The first route regulating section 20 extends along a desired wiring direction of the electric wire W. Specifically, the first path regulating part 20 has an internal space 23 and is formed by bending the electric wire W accommodated in the internal space 23 so that it is inevitably bent. When the inner member 13 is connected to the first grommet body 11 and the second grommet body 12, the end of the first route regulating part 20 on the vehicle body panel 1 side is the end of the second route regulating part 30 on the vehicle body panel 1 side. and the second path regulating part 30 to such an extent that no gap is created between the second path regulating part 30 and the second path regulating part 30 .

Further, the first path regulating section 20 is provided with a wall section 24 that divides the internal space 23 into a plurality of divided spaces. When the inner member 13 is connected to the first grommet body 11 and the second grommet body 12, the wall portion 24 is connected to the wall portion 34 provided in the internal space 33 of the second path regulating portion 30. They are pressed against each other to the extent that there is no gap between them.

The first electric wire holding cylinder part 21 is a cylindrical body that is continuous with the end of the first path regulating part 20 on the side opposite to the vehicle body panel 1 side and holds the electric wire W on the inner peripheral side. The inner diameter of the first electric wire holding cylinder part 21 is either slightly smaller than the outer diameter of the electric wire W or substantially the same as the outer diameter of the electric wire W. A protective member (not shown) such as a corrugated tube is arranged around the outer periphery of the electric wire W exposed from the first electric wire holding cylinder part 21.

The first electric wire holding cylinder portion 21 extends along a direction inclined to the axis of the first annular attachment portion 22 (in this embodiment, a direction perpendicular to the axis). In this embodiment, one first electric wire holding cylinder section 21 is disposed in the first path regulating section 20 . The protective member is inserted through the first wire holding cylinder part 21 so that the first electric wire holding cylinder part 21 and the protection member at least partially overlap. This protective member prevents water and the like from entering from the outside to the inside of the grommet 10 between the inner surface of the first electric wire holding cylinder part 21 and the outer circumferential surface of the electric wire W.

Note that an annular first seal portion may be provided on the inner peripheral surface of the first electric wire holding cylinder part 21 to close the gap between the inner peripheral surface of the first electric wire holding cylinder part 21 and the electric wire W. .

The first annular attachment portion 22 has a first opening and is formed in an elliptical annular shape. The outer diameter of the first annular attachment part 22 is smaller than the inner diameter of the second annular attachment part 32, which will be described later. The first annular attachment portion 22 includes a first recess 25 .

The first recess 25 is formed in an elliptical ring shape on the outer peripheral side of the first annular attachment part 22, and when the inner member 13 is connected to the first grommet main body 11, the inner peripheral protrusion 42 of the inner member 13 is fitted into the first recess 25. let

The second grommet main body 12 is arranged on the outside of the vehicle interior (under the floor). The second grommet body 12 has a second route regulating part 30 that regulates the route of the electric wire W pulled out to the space 4 outside the vehicle interior, and an end of the second grommet body 12 on the opposite side from the vehicle body panel 1 side. It has a second electric wire holding cylinder part 31 provided therein. The second grommet body 12 also has a second annular attachment portion 32 provided at the end of the second grommet body 12 on the vehicle body panel 1 side.

The second route regulating section 30 is a hollow body that accommodates the electric wire W therein, and regulates the route of the electric wire W accommodated in the internal space 33 to maintain the bent state. The second route regulating section 30 extends along a desired wiring direction of the electric wire W. Specifically, the second route regulating section 30 has an internal space 33 and is formed by bending the electric wire W accommodated in the internal space 33 so that it is inevitably bent. When the inner member 13 is connected to the first grommet body 11 and the second grommet body 12, the end of the second route regulating part 30 on the vehicle body panel 1 side is the end of the first route regulating part 20 on the vehicle body panel 1 side. The first path regulating section 20 is abutted to such an extent that no gap is created between the first path regulating section 20 and the first path regulating section 20 .

Further, the second path regulating section 30 is provided with a wall section 34 that divides the internal space 33 into a plurality of divided spaces. When the inner member 13 is connected to the first grommet body 11 and the second grommet body 12, the wall portion 34 is connected to the wall portion 24 provided in the internal space 23 of the first path regulating portion 20. They are pressed against each other to the extent that there is no gap between them.

The second electric wire holding cylinder part 31 is a cylindrical body that is continuous with the end of the second path regulating part 30 on the side opposite to the vehicle body panel 1 side and holds the electric wire W on the inner peripheral side. The inner diameter of the second electric wire holding cylinder part 31 is either slightly smaller than the outer diameter of the electric wire W or substantially the same as the outer diameter of the electric wire W. A protective member (not shown) such as a corrugated tube is arranged around the outer periphery of the electric wire W exposed from the second electric wire holding cylinder part 31.

The second electric wire holding cylinder portion 31 extends along a direction inclined to the axis of the second annular attachment portion 32 (in the present embodiment, a direction perpendicular to the axis). In this embodiment, one second electric wire holding cylinder section 31 is disposed in the second path regulating section 30 . The protective member is inserted through the second wire holding cylinder part 31 so that the second electric wire holding cylinder part 31 and the protection member at least partially overlap. This protective member prevents water and the like from entering from the outside of the grommet 10 into the inside of the grommet 10 through the space between the inner surface of the second electric wire holding cylinder part 31 and the outer circumferential surface of the electric wire W.

Note that an annular second seal portion may be provided on the inner circumferential surface of the second electric wire holding tube 31 to close the gap between the inner circumferential surface of the second electric wire holding tube 31 and the electric wire W. .

The second annular attachment portion 32 has a second opening larger than the first opening and is formed in an elliptical annular shape. The inner diameter of the second annular attachment portion 32 is larger than the outer diameter of the first annular attachment portion 22 . The second annular attachment portion 32 includes a second recess 35 and a lip portion 36 .

The second recess 35 is formed in an elliptical ring shape on the inner circumferential side of the second annular attachment part 32, and when the inner member 13 is connected to the second grommet main body 12, the outer circumferential protrusion 43 of the inner member 13 is fitted into the second recess 35. let

The lip portion 36 is an elliptical annular seal portion that protrudes toward the vehicle body panel 1 from the outer peripheral edge surface 32a facing the vehicle body panel 1. When the grommet 10 is attached to the peripheral edge of the through hole 2, the lip portion 36 is elastically deformed in the direction of falling toward the outer peripheral edge surface 32a, and the lip portion 36 is elastically deformed in the direction of falling toward the outer peripheral edge surface 32a. It comes into close contact with the peripheral surface of 2. This prevents water and the like from entering from the outside of the grommet 10 through the gap between the lip portion 36 and the surface of the vehicle body panel 1 facing the lip portion 36 .

Inner member 13 is fitted into through hole 2 . Specifically, with the outer circumferential surface 22a of the first annular attaching section 22 and the inner circumferential surface 32b of the second annular attaching section 32 facing each other, the inner member 13 is connected to the outer circumferential surface 22a of the first annular attaching section 22. It is arranged between the inner circumferential surface 32b of the second annular attachment portion 32 and the inner circumferential surface 32b of the second annular attachment portion 32.

The inner member 13 shown in FIG. 2 is an annular member that supports the first grommet main body 11 and the second grommet main body 12 and is held at the peripheral edge of the through hole 2. Moreover, the inner member 13 is composed of a pair of members divided into two by a virtual plane including the central axis of the inner member 13 itself, that is, a combination of a first inner member 40a and a second inner member 40b.

The inner member 13 as a whole includes a main body portion 41 which is an annular structure composed of a plurality of walls, an inner circumferential convex portion 42 as an inner circumferential side collar portion which is an annular plate body, and an annular convex portion 42 as an inner circumferential side collar portion which is an annular plate body. It has an outer circumferential side convex part 43 as an outer circumferential side collar part which is a plate.

The main body portion 41 includes, for example, an outer peripheral wall 41a, an upper wall 41b, and an inner peripheral wall 41c. The outer peripheral wall 41a is a wall portion that faces the peripheral edge of the through hole 2 along the plane direction of the vehicle body panel 1 when the grommet 10 is attached to the peripheral edge of the through hole 2. The upper wall 41b is a wall portion that is continuous between the upper peripheral end and the outer peripheral end of the outer peripheral wall 41a and extends toward the inner peripheral side. The inner circumferential wall 41c is a wall portion that is continuous with the inner circumferential end of the upper wall 41b and is approximately parallel to the outer circumferential wall 41a.

The inner circumferential convex portion 42 projects radially inward from a vertically intermediate circumferential wall of the inner circumferential wall 41c. The inner peripheral convex portion 42 is formed in an elliptical ring shape, and is fitted into the first recess 25 of the first grommet body 11 when the inner member 13 is connected to the first grommet body 11 as described above.

The outer peripheral convex portion 43 projects radially outward from the lower peripheral end of the outer peripheral wall 41a. The outer peripheral convex portion 43 is formed in an elliptical ring shape, and is fitted into the second recess 35 of the second grommet body 12 when the inner member 13 is connected to the second grommet body 12 as described above.

Here, when the inner member 13 is a combination of a pair of members, the first inner member 40a and the second inner member 40b, the first inner member 40a and the second inner member 40b have the same half-ring shape. There may be. Further, the first inner member 40a and the second inner member 40b include two connecting portions 44a and 44b that are connected when combined with each other. Among the two connecting portions 44a and 44b, one connecting portion 44a may be a connecting mechanism using a claw portion and a groove portion, and the other connecting portion 44b may be a hinge portion. That is, the first inner member 40a and the second inner member 40b may be connected at one end by a connection mechanism using a claw and a groove, and may be connected at the other end by a hinge.

Note that the two connecting parts may be a connecting mechanism using a claw part and a groove part. That is, the first inner member and the second inner member may be connected at both end portions via a connection mechanism using a claw portion and a groove portion. Moreover, although the case where the inner member is divided into two inner members is illustrated here, it may be divided into three or more inner members.

In addition, the inner member 13 includes a plurality of inner locks 50 that lock the main body 41 to the periphery of the through hole 2 when a part of the main body 41 is inserted into the through hole 2 . In the present embodiment, the inner locks 50 are provided at four locations on the entire inner member 13 at equal intervals in the circumferential direction. That is, two inner locks 50 are provided in each of the first inner member 40a and the second inner member 40b. Note that the number of installed inner locks 50 is not particularly limited, and may be other than four.

Inner lock 50 includes a lock claw 51.

The lock claw 51 is provided along the outer circumferential wall 41a of the main body portion 41, and is elastically deformed in a direction connecting the inside and outside of the outer circumferential wall 41a. The lock claw 51 has a protrusion that contacts or engages with the peripheral edge of the through hole 2 . Here, the state in which the protrusion engages with the peripheral edge of the through hole 2 is when the inner lock 50 locks the main body 41 with the peripheral edge of the through hole 2, that is, when the grommet 10 engages with the peripheral edge of the through hole 2. Refers to the state of the protrusion relative to the through hole 2 when attached to the peripheral edge. The protrusion protrudes outward with the ridge line along the circumferential direction of the outer circumferential wall 41a as the apex, and is always located outside the outer periphery of the outer circumferential wall 41a. In other words, the elastic deformation of the lock pawl 51 is caused by the displacement of the protrusion due to the protrusion being in contact with the peripheral edge of the through hole 2 . When the protrusion is engaged with the peripheral edge of the through hole 2, the peripheral edge of the through hole 2 enters the lower end groove of the protrusion, so that the main body 41 is moved against the peripheral edge of the through hole 2. and maintain a certain posture.

In the inner member 13, since the inner locks 50 are provided at four locations in the circumferential direction, each protrusion included in a total of four lock claws 51 extends in the radial direction with respect to the central axis of the main body 41. It will protrude along.

Next, a procedure for assembling the grommet 10 will be explained.

First, the electric wire W is housed inside the first grommet body 11 and the second grommet body 12. That is, the first grommet main body 11 and the second grommet main body 12 are placed in a separated state, and the electric wire W is routed inside.

Next, the inner member 13 is attached to the first grommet main body 11 from the outside. That is, while fitting the inner protrusion 42 provided on the inner circumference of the inner member 13 into the first recess 25 provided on the outer circumference of the first grommet main body 11, the first inner member 40a of the inner member 13 and the second The inner member 40b is connected to the inner member 40b. Thereby, the first grommet main body 11 and the inner member 13 are fitted together.

Next, the second grommet main body 12 is attached to the inner member 13 from the outside. That is, the second grommet main body 12 and the inner member 13 are fitted by fitting the second recess 35 provided on the inner peripheral side of the second grommet main body 12 onto the outer peripheral convex portion 43 provided on the outer peripheral side of the inner member 13. will be combined.

Next, the electric wire W is passed through the through hole 2 of the vehicle body panel 1, and the grommet 10 is pushed into the through hole 2 using the space 4 outside the vehicle interior with the first grommet main body 11 on the insertion tip side. Then, the first grommet main body 11 protrudes from the through hole 2 into the space 3 on the inside of the vehicle interior, and then the inner member 13 enters the through hole 2 and when the inner member 13 is inserted to the insertion completion position, the grommet 10 is attached to the through hole 2 of the vehicle body panel 1.

Next, the effects of the grommet 10 will be explained.

A grommet 10 according to the first aspect of the present embodiment holds an electric wire W passing through a through hole 2 in a member to be attached (vehicle body panel 1). The grommet 10 has a first route regulating part 20 that regulates the route of the electric wire W pulled out to one side of the attached member (vehicle body panel 1), and a first annular attachment part 22 having a first opening. 1 includes a grommet body 11. Furthermore, the grommet 10 has a second route regulating part 30 that regulates the route of the electric wire W pulled out to the other side of the attached member (vehicle body panel 1), and a second opening that is larger than the first opening. A second grommet body 12 having a second annular attachment portion 32 is provided. Furthermore, the grommet 10 includes an inner member 13 that is formed into an annular shape using a material that is more rigid than the first grommet body 11 and the second grommet body 12 and is fitted into the through hole 2 . In a state where the outer circumferential surface 22a of the first annular attachment part 22 and the inner circumferential surface 32b of the second annular attachment part 32 face each other, the inner member 13 32 and the inner circumferential surface 32b.

According to the grommet 10 according to the present embodiment, since the path regulating portions (the first path regulating portion 20 and the second path regulating portion 30) are provided on both sides of the through hole 2, one side of the through hole 2 and the other side of the through hole 2 are provided. The setting of route regulating sections on both sides can be used in cases where it is necessary to improve sound insulation performance, etc. Therefore, according to the present embodiment, it is possible to provide the grommet 10 with excellent sound insulation performance.

Further, in this embodiment, the first grommet body 11 and the second grommet body 12 made of rubber, for example, are made of a material having higher rigidity (for example, synthetic resin) than the first grommet body 11 and the second grommet body 12, respectively. It is fitted into the inner member 13 formed by Since synthetic resin is hard and difficult to deform, workability when fitting the first grommet body 11 and the second grommet body 12 to the inner member 13 can be improved.

As described above, according to the present embodiment, both the route regulating parts (the first route regulating part 20 and the second route regulating part 30) on one side and the other side of the through hole 2 are fitted into the inner member 13. It is possible to provide a grommet 10 that is excellent in workability when doing so.

In the grommet 10 according to the second aspect of the present embodiment, a first recess 25 is provided on the outer peripheral surface 22a of the first annular attachment part 22 along the circumferential direction of the first annular attachment part 22. On the other hand, on the inner peripheral surface (inner peripheral wall 41c) of the inner member 13, an inner peripheral convex portion 42 that engages with the first recess 25 is provided along the circumferential direction of the inner member 13.

The first recess 25 is provided on the outer circumferential surface 22a of the first annular attachment portion 22, and the inner circumferential convex portion 42 is provided on the inner circumferential surface (inner circumferential wall 41c) of the inner member 13, so that the inner member 13 can be 1 It can be attached to the grommet main body 11 from the outside. That is, by fitting the inner circumferential protrusion 42 of the inner member 13 into the first recess 25 of the first grommet main body 11, the first grommet main body 11 and the inner member 13 can be fitted. Therefore, it is possible to visually confirm that the first grommet body 11 and the inner member 13 are properly fitted, and the grommet has a structure that makes it easy to detect the fit between the first grommet body 11 and the inner member 13. It can be set to 10.

In the grommet 10 according to the third aspect of the present embodiment, a second recess 35 is provided on the inner circumferential surface 32b of the second annular attachment portion 32 along the circumferential direction of the second annular attachment portion 32. On the other hand, on the outer circumferential surface (outer circumferential wall 41 a ) of the inner member 13 , an outer circumferential protrusion 43 that engages with the second recess 35 is provided along the circumferential direction of the inner member 13 .

The second recess 35 is provided on the inner circumferential surface 32b of the second annular attachment portion 32, and the outer circumferential convex portion 43 is provided on the outer circumferential surface (outer circumferential wall 41a) of the inner member 13, so that the second grommet main body 12 can be It can be attached to the inner member 13 from the outside. That is, the second grommet main body 12 and the inner member 13 can be fitted together by covering the second recess 35 of the second grommet main body 12 over the outer circumferential protrusion 43 of the inner member 13. Therefore, it is possible to visually confirm that the second grommet main body 12 and the inner member 13 are properly fitted, and the grommet has a structure that makes it easy to detect the fitting between the second grommet main body 12 and the inner member 13. It can be set to 10.

In the grommet 10 according to the fourth aspect of the present embodiment, the first route regulating section 20 and the second route regulating section 30 are each a hollow body that accommodates the electric wire W therein. Wall portions 24, 34 are provided that divide the internal spaces 23, 33 into a plurality of divided spaces.

By providing walls 24 and 34 inside the first route regulating section 20 and the second route regulating section 30, respectively, and laying the electric wire W near the walls 24 and 34, the electric wire W can be routed along the first route. It becomes possible to prevent movement inside the regulating section 20 and the second route regulating section 30 as much as possible. Moreover, the walls 24 and 34 provided inside the first route regulating part 20 and the second route regulating part 30 also function as ribs for stiffening, and the first route regulating part 20 and the second route regulating part 30 rigidity can be increased. Therefore, it is possible to prevent the first path regulating portion 20 and the second path regulating portion 30 from recessing toward the through hole 2 during the work of assembling the first grommet main body 11 and the second grommet main body 12 to the inner member 13. It becomes possible.

The wire harness according to this embodiment includes the grommet 10 of any one of the above-described aspects.

According to the present embodiment, the workability when fitting both the route regulating parts (the first route regulating part 20 and the second route regulating part 30) on one side and the other side of the through hole 2 to the inner member 13 is improved. We can provide superior wire harnesses.

[Other embodiments]
Next, a grommet 10A according to another embodiment will be described. In addition, the substantially same component parts as the above-mentioned grommet 10 are attached|subjected with the same code|symbol, and the description is abbreviate|omitted.

FIG. 6 is a perspective view of a grommet 10A according to another embodiment, FIG. 7 is an exploded view of the grommet 10A according to another embodiment, and FIG. 8 is a plan view of the grommet 10A according to another embodiment. It is a diagram.

As shown in FIGS. 6 to 8, in the grommet 10A according to this embodiment, a plurality of (two in the illustrated example) first wire holding cylinder parts 21a and 21b are provided for the first path regulating part 20. It is being In addition, in the grommet 10A, a plurality of (two in the illustrated example) second wire holding cylinder parts 31a, 31b are provided for the second path regulating part 30, similar to the first wire holding cylinder parts 21a, 21b. It is being

In the two first electric wire holding cylinder parts 21a and 21b, the inner diameter of one first electric wire holding cylinder part 21a is larger than the inner diameter of the other first electric wire holding cylinder part 21b. As an example, an HV (high voltage side voltage) electric wire Wa is inserted into the thicker first electric wire holding cylinder part 21a, and an LV (low voltage side voltage) electric wire Wb is inserted into the thinner first electric wire holding cylinder part 21b. is inserted. The wall portion 24 provided in the internal space 23 of the first path regulating portion 20 partitions the internal space 23 into a plurality of accommodation spaces. Therefore, in the internal space 23 of the first path regulating section 20, the high-voltage electric wire Wa and the low-voltage electric wire Wb are housed in separate accommodation spaces, respectively.

Moreover, in the two second electric wire holding cylinder parts 31a and 31b, the inner diameter of one second electric wire holding cylinder part 31a is larger than the inner diameter of the other second electric wire holding cylinder part 31b. As an example, an electric wire Wa having a high voltage side is inserted through the thicker second electric wire holding cylinder part 31a, and an electric wire Wb having a low voltage side is inserted through the thinner second electric wire holding cylinder part 31b. The wall portion 34 provided in the internal space 33 of the second path regulating portion 30 partitions the internal space 33 into a plurality of accommodation spaces. Therefore, in the internal space 33 of the second path regulating section 30, the electric wire Wa of the high voltage side and the electric wire Wb of the low voltage side are housed in separate accommodation spaces, respectively.

In addition, although the case where two electric wire holding cylinder parts are respectively arrange|positioned in a 1st route regulation part and a 2nd route regulation part was illustrated here, 3 or more electric wire holding cylinder parts are arrange|positioned in a 1st route regulation part and a 2nd route regulation part, respectively. They may be respectively disposed in the second route regulating section.

According to the grommet 10A shown in FIGS. 6 to 8, similarly to the grommet 10 described above, both the route regulating parts (the first route regulating part 20, the second route regulating part 30) into the inner member 13 can be improved.

Furthermore, in the grommet 10A, the first route regulating section 20 and the second route regulating section 30 are hollow bodies that accommodate the electric wires Wa and Wb therein, and these hollow bodies include an internal space 23 of the hollow body, Wall portions 24, 34 are provided that partition the storage space 33 into a plurality of accommodation spaces (divided spaces).

Wall parts 24 and 34 are provided inside the first route regulating section 20 and the second route regulating section 30, respectively, to separate the accommodation space for the high voltage side voltage electric wire Wa and the accommodation space for the low voltage side electric wire Wb. Therefore, interference between the electric wires Wa and Wb and generation of noise can be suppressed.

Although this embodiment has been described above, this embodiment is not limited to these, and various modifications can be made within the scope of the gist of this embodiment.

1 Vehicle body panel 2 Through-holes 10, 10A Grommet 11 First grommet body 12 Second grommet body 13 Inner member 20 First path regulating portion 21, 21a, 21b First wire holding cylinder portion 22 First annular attachment portion 22a Outer peripheral surface 23 Internal space 24 Wall portion 25 First recess 30 Second path regulating portion 31, 31a, 31b Second wire holding cylinder portion 32 Second annular attachment portion 32b Inner peripheral surface 33 Internal space 34 Wall portion 35 Second recess 41a Outer peripheral wall 41c Inner peripheral wall 42 Inner peripheral protrusion 43 Outer peripheral protrusion W, Wa, Wb Electric wire

Claims (5)

In a grommet that holds an electric wire passing through a through hole in an attached member,
a first grommet body having a first route regulating part regulating a route of the electric wire pulled out to one side of the attached member; and a first annular attachment part having a first opening;
a second grommet having a second route regulating part regulating a route of the electric wire pulled out to the other side of the attached member; and a second annular attachment part having a second opening larger than the first opening. The main body and
an inner member formed into an annular shape using a material having higher rigidity than the first grommet main body and the second grommet main body, and fitted into the through hole;
With the outer circumferential surface of the first annular attachment part and the inner circumference of the second annular attachment part facing each other, the inner member placed between the surrounding surface,
grommet. A first recess is provided on the outer circumferential surface of the first annular attaching portion along the circumferential direction of the first annular attaching portion, and an inner circumferential portion that engages with the first recess is provided on the inner circumferential surface of the inner member. The grommet according to claim 1, wherein the circumferential convex portion is provided along the circumferential direction of the inner member. A second recess is provided on the inner circumferential surface of the second annular attachment portion along the circumferential direction of the second annular attachment portion, and an outer circumference that engages with the second recess is provided on the outer circumferential surface of the inner member. The grommet according to claim 1 or 2, wherein the side convex portion is provided along the circumferential direction of the inner member. Each of the first route regulating part and the second route regulating part is a hollow body that accommodates the electric wire therein, and the hollow body has a wall part that divides the internal space of the hollow body into a plurality of divided spaces. The grommet according to claim 1 or 2, wherein the grommet is provided with:. A wire harness comprising the grommet according to claim 1 or 2.

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