JP6908427B2 - Grommets and wire harnesses - Google Patents

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.

Various grommets have been conventionally proposed (for example, Patent Document 1). As a conventional example of such a grommet, there is one shown in FIGS. 10 to 13. In FIGS. 10 to 13, the electric wire through hole 2 is formed in the vehicle body panel 1. The electric wire W is penetrated through the electric wire through hole 2. A grommet 100 is mounted on the outer circumference of the electric wire W. The grommet 100 includes a grommet body 101 formed of a flexible material (for example, a rubber material) and an inner protector 110 arranged inside the grommet body 101 and formed of a material having a higher rigidity than the grommet body 101. ..

The grommet main body 101 is formed with a lip portion 102 on the contact surface side of the vehicle body panel 1. The lip portion 102 is formed of an inner peripheral lip portion 102a and an outer peripheral lip portion 102b. 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 electric wire through hole 2 of the vehicle body panel 1 by the panel locking claw 111 and the lip portion 102. The lip portion 102 is brought into close contact with the outer peripheral edge of the electric wire through hole 2 of the vehicle body panel 1 due to the holding force of the panel locking claw 111 and the lip portion 102 to the vehicle body panel 1. The lip portion 102 seals the space between the lip portion 102 and the vehicle body panel 2.

The grommet main body 101 is formed with an electric wire holding cylinder portion 103 on the side opposite to the contact surface of the vehicle body panel 1. The electric wire holding cylinder portion 103 and the portion of the electric wire W drawn out from the electric wire holding cylinder portion 103 are wound with the tape T. The inner surface of the electric wire holding cylinder 103 is in close contact with the outer circumference of the electric wire W. The electric wire holding cylinder portion 103 and the tape T seal between the electric wire holding cylinder portion 103 and the electric wire W.

In this way, the grommet 100 mounted from one side of the vehicle body panel 1 provides an electric wire through hole 2 for arranging 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.

Japanese Unexamined Patent Publication No. 2014-82827

By the way, as shown in FIG. 14A, when the grommet 100 is inserted into the electric wire through hole 2 of the vehicle body panel 1 in a state of being tilted obliquely, the peripheral edge of the electric wire through hole 2 of the vehicle body panel 1 hits the outer peripheral lip portion 102b. Touch. Here, as shown in FIG. 14B, when the peripheral edge of the electric wire through hole 2 of the vehicle body panel 1 enters the outside of the outer peripheral lip portion 102b, the outer peripheral lip portion 102b is turned over. When the outer peripheral lip portion 102b is turned up, the grommet 100 is attached to the electric wire through hole 2 with the outer peripheral lip portion 102b inserted into the electric wire through hole 2, as shown in FIG. 14 (c). If the grommet 100 is attached to the electric wire through hole 2 in a state where the outer peripheral lip portion 102b is inserted into the electric wire through hole 2, there arises a problem that the sealing performance such as waterproofing is deteriorated.

Therefore, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a grommet and a wire harness capable of preventing deterioration of sealing property due to turning of the lip portion.

The present invention is mounted to the wire insertion hole from one side of the vehicle body panel, the grommet to close the wire insertion hole of the vehicle body panel wire penetrates, the peripheral edge surface is facing side of the vehicle body panel, the outer circumferential lip portion Is provided, and an auxiliary lip piece protruding outward is provided on the outer peripheral surface at a position closer to the tip than the root of the outer peripheral lip portion, and the auxiliary lip piece is attached to the electric wire through hole during the process of mounting. In the state, when the peripheral edge of the electric wire through hole is located outside the outer peripheral lip portion, the tip of the peripheral edge of the electric wire through hole abuts against the vehicle body panel without protruding from the outer peripheral edge of the grommet, and in the mounted state to the electric wire through hole, the tip thereof abuts. It is a glomet whose tip is set so as to protrude outward from the outer peripheral edge of the glomet .

According to the present invention, when the grommet is attached to the electric wire through hole, when the peripheral edge of the electric wire through hole of the vehicle body panel enters the outside of the outer peripheral lip portion, the peripheral edge of the electric wire through hole presses the auxiliary lip piece to press the auxiliary lip. The piece shifts. Then, the portion of the outer peripheral lip portion on the tip side of the connecting portion of the auxiliary lip piece is forcibly pulled outward by the auxiliary lip piece, so that the outer peripheral lip portion is prevented from being turned over and entering the electric wire through hole. From the above, it is possible to prevent deterioration of the sealing property due to the turning of the outer peripheral lip portion.

An embodiment of the present invention is shown, and is an exploded perspective view of a grommet. An embodiment of the present invention is shown, and is a perspective view of a grommet. An embodiment of the present invention is shown, which is a cross-sectional view taken along the line AA of FIG. An embodiment of the present invention is shown, and is a cross-sectional view of a main part of a grommet before being mounted in an electric wire through hole. An embodiment of the present invention is shown, and is a cross-sectional view of a main part of a grommet main body before being mounted in an electric wire through hole. An embodiment of the present invention is shown, (a) is a cross-sectional view of a main part of a grommet mounted on an electric wire through hole, and (b) is a D1 arrow view of (a). An embodiment of the present invention is shown, and FIGS. (A) to (D) are perspective views showing each assembly process of the grommet. It is a perspective view which shows one Embodiment of this invention and explains the procedure of attaching the grommet to the electric wire through hole. An embodiment of the present invention is shown, in which (a) is a perspective view showing a case where the peripheral edge of the wire through hole is located outside the outer peripheral lip portion in the process of mounting the grommet in the wire through hole, and (b) is an auxiliary view. It is sectional drawing of the main part explaining the behavior of a lip piece. A conventional example is shown, and it is an exploded perspective view of a grommet. A conventional example is shown, and it is a perspective view of a grommet. A conventional example is shown, and it is a cross-sectional view taken along the line BB of FIG. A conventional example is shown, (a) is a cross-sectional view of a main part of a grommet mounted on an electric wire through hole, and (b) is a D2 arrow view of (a). Conventional examples are shown, and FIGS. (A) to (C) are perspective views of main parts showing each mounting process of the grommet into the electric wire through hole.

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

1 to 9 show an embodiment of the present invention. As shown in FIGS. 1 to 3, a circular electric wire through hole 2 is formed in the vehicle body panel 1. The electric wire (electric wire assembly) W of the wire harness is penetrated through the electric wire through hole 2. The electric wire W of the wire harness is arranged over the space 3 on one side (shown in FIG. 3 and the like) and the space 4 on the other side (shown in FIG. 3 and the like) by penetrating the electric wire through hole 2. Will be done. The wire harness has a grommet 10 mounted on the outer circumference of the electric wire W. The wire through hole 2 of the vehicle body panel 1 is closed by the grommet 10. Hereinafter, the configuration of the grommet 10 will be described in detail.

The grommet 10 is mounted in the electric wire through hole 2 from the space 3 on one side of the vehicle body panel 1. The grommet 10 has a grommet body 11 formed of a flexible material (for example, a rubber material), an inner protector 20 arranged inside the grommet body 11 and formed of a material having a higher rigidity than the grommet body 11, and an inner protector 20. It is provided with a route regulating member 30 fixed to the grommet.

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

As shown in detail in FIGS. 4 and 5, the lip portion 15 projects from the outer peripheral edge surface 18 on the contact surface side of the vehicle body panel 1 of the large diameter tubular portion 12. The lip portion 15 is formed of an inner peripheral lip portion 16 and an outer peripheral lip portion 17 whose tips are both free ends. That is, the lip portion 15 has a double seal structure, and the outer peripheral lip portion 17 is located outside the inner peripheral lip portion 16. The inner peripheral lip portion 16 and the outer peripheral lip portion 17 are continuously formed over the entire circumference of the large-diameter tubular portion 12.

Before the grommet 10 is attached to the electric wire through hole 2, the inner peripheral lip portion 16 protrudes perpendicularly from the root to the outer peripheral edge surface 18 and is inclined in a direction of opening outward at the tip portion thereof. .. The outer peripheral lip portion 17 projects in a direction in which the outer peripheral edge surface 18 is inclined outward with respect to the orthogonal direction. Since the tip of the outer peripheral lip portion 17 is a free end, the outer peripheral lip portion 17 freely bends in the inward direction (the direction of the arrow a in FIG. 4) which causes the inclination and the outward direction (the direction of the arrow b in FIG. 4) where the inclination increases. It is deformable.

An auxiliary lip piece 17A projecting outward is provided on the outer peripheral surface of the outer peripheral lip portion 17. The auxiliary lip piece 17A is continuously formed over the entire circumference of the outer peripheral lip portion 17. The auxiliary lip piece 17A is projected from a position closer to the tip than the root of the outer peripheral lip portion 17. The auxiliary lip piece 17A extends obliquely downward with respect to the surface direction of the outer peripheral surface 18. As a result, in the process of mounting the vehicle body panel 1 to the electric wire through hole 2, when the peripheral edge of the electric wire through hole 2 of the vehicle body panel 1 is located outside the outer peripheral lip portion 17, the electric wire through hole of the vehicle body panel 1 is formed. The peripheral edge of No. 2 surely abuts on the auxiliary lip piece 17A. Further, the tip of the auxiliary lip piece 17A, which is a free end, is located at a position close to the outer peripheral surface 18, and between the auxiliary lip piece 17A and the outer peripheral surface 18, the peripheral edge of the electric wire through hole 2 of the vehicle body panel 1 Is prevented from entering.

As shown in FIG. 5, the length Ll from the connecting position of the auxiliary lip piece 17A to the tip position of the outer peripheral lip portion is naturally shorter than the length L2 from the root position to the tip position of the outer peripheral lip portion 17, and the outer circumference The portion of the lip portion 17 on the tip side (the portion of dimension L1) from the connecting position of the auxiliary lip piece 17A is set to a length that forcibly changes following the change of the outer peripheral lip portion 17.

As shown in FIG. 4, the tip of the auxiliary lip piece 17A does not protrude from the large-diameter tubular portion 12 in the state before being attached to the electric wire through hole 2, and in the state of being attached to the electric wire through hole 2, FIG. As shown in (a) and (b), the tip thereof is set to the dimension L3 protruding outward from the large-diameter tubular portion 12.

As shown in FIG. 9, between the inner position a of the gap formed by the outer peripheral lip portion 17 and the auxiliary lip piece 17A and the corner portion at the farthest position in the portion (inner protector 20) entering the electric wire through hole 2. The dimension E1 of is set to be larger than the hole dimension E2 of the electric wire through hole 2.

As shown in FIG. 6, when the grommet 10 is attached to the electric wire through hole 2, the inner peripheral lip portion 16 and the outer peripheral lip portion 17 are elastically deformed in the direction of falling toward the outer peripheral surface 18 side of the large diameter tubular portion 12. It is brought into close contact with the peripheral surface of the electric wire through hole 2 of the vehicle body panel 1. This prevents water or the like from entering the grommet 10 through the gap between one surface of the vehicle body panel 1 and the lip portion 15. In FIGS. 2 to 5, 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 slightly smaller than or substantially the same as the outer diameter of the electric wire W. The electric wire holding cylinder portion 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 portion 19. This prevents water or the like from entering the grommet 10 through the gap between the inner surface of the electric wire holding cylinder portion 19 and the outer peripheral surface of the electric wire W.

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

The inner protector 20 is formed of a pair of inner members 21 that are assembled to each other. Each inner member 21 includes a semicircular inner main body 22 when viewed from above, and a flange 28 projecting outward from the inner main body 22. The inner main body portion 22 is provided at a position below the semicircular side wall 23, the upper restricting wall portion 24 provided toward the inner peripheral side of the semicircular side wall 23, and the upper restricting wall portion 24. It is provided with a lower regulation wall portion 25. A semi-arc-shaped fitting groove 26 is formed in each inner main body portion 22 so as to be surrounded by the upper regulation wall portion 24 and the lower regulation wall portion 25. In a state where the pair of inner members 21 are united, a circumferential groove shape is formed by the two fitting grooves 26.

Each upper regulation wall portion 24 is formed with a triangular notch 27 when viewed from above. In a state where the pair of inner members 21 are united, a quadrangular notch shape is formed by the two notches 27.

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

Panel locking claws 29A are provided on the outer peripheral surface of each semicircular side wall 23 at intervals. Each panel locking claw 29A is elastically deformable in a direction in which the tip end side approaches the semicircular side wall 23. The vehicle body panel 1 is sandwiched between the plurality of panel locking claws 29A of the inner protector 20 and the lip portion 15 of the grommet main body 11. Due to this holding force, the grommet 10 is mounted in the electric wire through hole 2 of the vehicle body panel 1.

The route regulating member 30 is made of a material having rigidity that can at least maintain its own form in a state where the electric wire W is housed inside. The route regulating member 30 is a tubular body that houses the electric wire W inside. The route regulating member 30 extends along a desired arrangement direction of the electric wire W. Specifically, the route restricting member 30 is bent at a position close to the base end portion fixed to the inner protector 20, and extends straight from the bent portion to the tip in an oblique direction.

The route regulation member 30 includes a route regulation main body 31, a cover 33 connected to the route regulation main body 31 via a hinge portion 32, and a base flange portion 34 attached to the base end portion of the route regulation main body 31 and the cover 33. It has. The route regulation main body 31 has a U-shaped wall surface portion extending along a desired arrangement direction of the electric wire W, and the electric wire accommodating chamber 35 is formed in the U-shaped wall surface portion. The cover 33 is provided with a hinge portion 32 so that the electric wire accommodating chamber 35 can be opened and closed. At the closed position, the route regulation main body 31 and the cover 33 are locked by the mutual locking portions 36.

The base flange portion 34 of the route regulating member 30 is fitted into the circumferential fitting groove 26 of the inner protector 20 (a pair of combined inner main body portions 22), and the tip side of the base flange portion 34 is inner. It projects outward from a pair of square notches 27 of the protector 20 (a pair of combined upper regulation wall portions 24). The path restricting member 30 is fixed to the inner protector 20 in a protruding state in a predetermined direction by a notch 27 to prevent rotation and a fitting groove 26. That is, the route regulating member 30 is extended along a predetermined direction in the space 4 on the other side of the vehicle body panel 1, and regulates the route of the electric wire W drawn out to the space 4 on the other end side of the vehicle body panel 1. ..

The base flange portion 34 of the route regulating member 30 is fitted into the fitting groove 26 of the inner protector 20 without a gap. As a result, the path restricting member 30 is not displaced in the horizontal direction or in the swing direction. As a result, the distribution route of the internal electric wire W is uniquely specified.

Next, the procedure for assembling the grommet 10 will be described. The electric wire W is housed in the route regulating member 30. That is, as shown in FIG. 7A, the electric wire W is arranged in the route regulation main body 31 in which the cover 33 is opened, and the cover 33 is closed.

Next, the route restricting member 30 is attached to the inner protector 20. That is, as shown in FIG. 7B, the base collar portion 34 of the route regulating member 30 is set between the pair of inner members 21, and the base collar portion 34 is fitted into the fitting groove 26 of the pair of inner members 21. While combining the pair of inner members 21 (see FIG. 7C).

Next, the inner protector 20 is fitted to the grommet main body 11 through which the electric wire W is passed. That is, as shown in FIG. 7D, the large-diameter tubular portion 12 of the grommet main body 11 is elastically deformed in the expanding direction, and the flange portion 28 of the inner protector 20 is fitted into the inner fitting groove 13 of the grommet main body 11. With this, 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 as shown in FIG. 8, the grommet 10 is inserted through the electric wire through hole from the space 3 on one side of the vehicle body panel 1 with the path restricting member 30 as the insertion tip side. Push it into 2. Then, the route restricting member 30 projects from the electric 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 electric wire through hole 2. Here, each panel locking claw 29A of the inner protector 20 abuts on the peripheral edge of the electric wire through hole 2, but each panel locking claw 29A is elastically deformed and the inner protector 20 is allowed to be inserted into the electric wire through hole 2. .. When the inner protector 20 is inserted to the insertion completion position, as shown in FIG. 6, each panel locking claw 29A elastically returns and locks on the peripheral edge of the vehicle body panel 1 on the opposite side of the electric wire through hole 2. The vehicle body panel 1 is sandwiched between the plurality of panel locking claws 29A and the lip portion 15 of the grommet main body 11. Due to this holding force, the grommet 10 is mounted in the electric wire through hole 2 of the vehicle body panel 1. The inner peripheral lip portion 16 and the outer peripheral lip portion 17 are elastically deformed in the direction of falling toward the outer peripheral edge surface 18 of the large-diameter tubular portion 12, and are brought into close contact with the peripheral surface of the electric wire through hole 2 of the vehicle body panel 1. This prevents water or the like from entering the grommet 10 through the gap between one surface of the vehicle body panel 1 and the lip portion 15.

The above-mentioned attachment of the grommet 10 to the electric wire through hole 2 is performed by passing the route regulating member 30 through the electric wire through hole 2 of the vehicle body panel 1 and then tilting the grommet 10 diagonally to the electric wire through hole 2 of the vehicle body panel 1. First, the peripheral edge of the electric wire through hole 2 of the vehicle body panel 1 comes into contact with the outer peripheral lip portion 17.

Here, the peripheral edge of the electric wire through hole 2 of the vehicle body panel 1 may enter the inside of the outer peripheral lip portion 17, but as shown in FIG. 9A, the peripheral edge of the electric wire through hole 2 of the vehicle body panel 1 is the outer peripheral lip. It may enter the outside of the portion 17. In this case, the peripheral edge of the wire through hole 2 presses the auxiliary lip piece 17A. When the auxiliary lip piece 17A is displaced to the outer peripheral surface 18 side by this pressing, the outer peripheral lip portion 17 on the tip side from the connecting portion of the auxiliary lip piece 17A is forcibly pulled outward by the auxiliary lip piece 17A, so that the outer circumference is pulled outward. It is prevented that the lip portion 17 is turned over and enters the electric wire through hole 2. As a result, the outer peripheral lip portion 17 bends and deforms together with the inner peripheral lip portion 16 in the direction of collapsing on the outer peripheral surface 18 of the grommet main body 11. Then, in the state of being attached to the electric wire through hole 2 of the grommet 10, as shown in FIG. 6, the outer peripheral lip portion 17 as well as the inner peripheral lip portion 16 is compressed between the vehicle body panel 1 and the outer peripheral edge surface 18 of the grommet main body 11. Be transformed.

Further, even if the outer peripheral lip portion 17 is not completely turned over and remains turned up, the portion to be turned over is not the entire length of the outer peripheral lip portion 17, but the portion at the tip from the connecting portion of the auxiliary lip piece 17A, and the outer peripheral lip portion 17 is turned over. The root side of the connecting portion 17 and the auxiliary lip piece 17A are compressed and deformed between the vehicle body panel 1 and the outer peripheral edge surface 18 of the grommet main body 11. Therefore, the desired sealing structure and sealing performance can be ensured.

As described above, in the grommet 10 which is mounted on the electric wire through hole 2 from the space 3 on one side of the vehicle body panel 1 and closes the electric wire through hole 2 of the vehicle body panel 1 through which the electric wire W penetrates, the contact surface of the vehicle body panel 1 An outer peripheral lip portion 17 is projected on the side, and an auxiliary lip piece 17A projecting outward is provided on the outer peripheral surface of the outer peripheral lip portion 17. Therefore, as described above, it is prevented that the outer peripheral lip portion 17 is turned over and enters the electric wire through hole 2. From the above, it is possible to prevent deterioration of the sealing property due to the turning of the outer peripheral lip portion 17.

As shown in FIG. 4, the tip of the auxiliary lip piece 17A does not protrude from the outer peripheral edge of the grommet (large diameter tubular portion 12) before being attached to the electric wire through hole 2, and is attached to the electric wire through hole 2. In the state, as shown in FIGS. 6A and 6B, the tip thereof is set to the dimension L3 protruding outward from the outer peripheral edge of the grommet (large diameter tubular portion 12). Therefore, after mounting the grommet 10 in the electric wire through hole 2, it is possible to visually confirm whether or not the grommet 10 is properly mounted. In the conventional example, in the mounted state in the electric wire through hole 2, as shown in FIGS. 13 (a) and 13 (b), the tip of the lip portion 102 does not protrude outward from the outer peripheral edge of the grommet, so that it is properly mounted. Cannot be visually confirmed.

The dimension E1 between the inner position of the gap formed by the outer peripheral lip portion 17 and the auxiliary lip piece 17A and the corner portion at the farthest position in the portion (inner protector 20) entering the electric wire through hole 2 is the electric wire through hole 2. The hole size is set to be larger than E2. Therefore, as shown in FIG. 9A, the peripheral edge of the electric wire through hole 2 of the vehicle body panel 1 enters the outside of the outer peripheral lip portion 17 instead of the inside, and the peripheral edge of the electric wire through hole 2 presses the auxiliary lip piece 17A. However, when the outer peripheral lip portion 17 is not forcibly deformed outward by the pressing of the auxiliary lip piece 17A, that is, when the outer peripheral lip portion 17 is turned over, the grommet 10 (inner protector 20) is inserted into the wire through hole. Cannot be fitted in 2. As a result, the operator has to redo the mounting, and finally, the grommet 10 is always properly mounted.

The grommet 10 is formed of a 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 peripheral edge of the electric wire through hole 2, and a member having a higher rigidity than the grommet main body 11 and is formed inside the grommet main body 11. It includes an inner protector 20 to be arranged, and a route regulating member 30 fixed to the inner protector 20 and restricting the route of the electric wire W fixed to the other end side of the vehicle body panel 1. To attach the grommet 10 to the electric wire through hole 2, 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 restricting member 30 as the insertion tip side. Here, in the case where the route regulating member 30 is not in a straight form but in a bent form as in the present embodiment, the grommet 10 is tilted diagonally when the path regulating member 30 is passed through the electric wire through hole 2. Therefore, as shown in FIG. 9A, the grommet main body 11 and the inner protector 20 are inserted into the electric wire through hole 2 in an oblique state. Therefore, the grommet structure has a high probability that the peripheral edge of the electric wire through hole 2 of the vehicle body panel 1 enters the outside of the outer peripheral lip portion 17, and the present invention is particularly effective for such a grommet structure.

(Modification example)
In the above embodiment, the grommet 10 includes a grommet main body 11 having a lip portion 15, an inner protector 20, and a path restricting member 30, but even if it is a single body having a lip portion, the lip portion may be provided. The present invention can be applied even if the grommet main body 11 and the inner protector 20 are provided.

In the above embodiment, the lip portion 15 has an inner peripheral lip portion 16 and an outer peripheral lip portion 17, and has a structure in which the surface of the vehicle body panel 1 is double-sealed. Also, the present invention can be applied to a structure that seals with a single layer (only a single lip portion). Further, when the lip portion is formed from a plurality of lip portions, it is preferable to provide an auxiliary lip piece on the outermost lip portion. This is because there is a high possibility that the outermost lip portion interferes with the peripheral edge of the electric wire through hole 2 and becomes a target to be turned over.

1 Body panel 2 Wire through hole 10 Grommet 11 Grommet body
18 Outer peripheral surface 20 Inner protector 30 Path regulation member 17 Outer peripheral lip part (lip part)
17A Auxiliary lip piece W electric wire

Claims (4)

In the grommet that is attached to the electric wire through hole from one side of the vehicle body panel and closes the electric wire through hole of the vehicle body panel through which the electric wire penetrates.
An outer peripheral lip portion is projected from the outer peripheral edge surface on the contact surface side of the vehicle body panel, and an auxiliary lip projecting outward is provided on the outer peripheral surface at a position closer to the tip than the root of the outer peripheral lip portion. A piece is provided ,
In the state of the mounting process of the auxiliary lip piece to the electric wire through hole, when the peripheral edge of the electric wire through hole is located outside the outer peripheral lip portion, the tip of the auxiliary lip piece does not protrude from the outer peripheral edge of the grommet and the vehicle body. The grommet is characterized in that the tip of the grommet is set so as to protrude outward from the outer peripheral edge of the grommet when it abuts on the panel and is mounted on the electric wire through hole . The grommet according to claim 1.
The dimension between the inner position of the gap formed by the outer peripheral lip portion and the auxiliary lip piece and the corner portion at the farthest position among the portions entering the electric wire through hole is set to be larger than the hole dimension of the electric wire through hole. The grommet is characterized by being made. The grommet according to claim 1 or 2.
A grommet body that covers the electric wire on one side of the vehicle body panel and is brought into close contact with the peripheral edge of the electric wire through hole.
An inner protector formed of a member having a higher rigidity than the grommet body and arranged inside the grommet body,
The grommet is provided with a path regulating member fixed to the inner protector and restricting the path of the electric wire pulled out to the other end side of the vehicle body panel. A wire harness provided with the grommet according to any one of claims 1 to 3.

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