grommet

Abstract

To provide a grommet that can improve water stoppage.SOLUTION: A grommet includes a facing portion 32 facing the peripheral portion of an assembly hole 12 in a vehicle body panel 11, and a second water stop portion 34 that extends from the facing portion 32 and comes into contact with the vehicle body panel 11. The second water stop portion 34 forms an annular shape surrounding the assembly hole 12. Further, the second water stop portion 34 includes a base portion 40 that extends from the facing portion 32 toward the vehicle body panel 11, a first lip portion 41 that extends from the tip of the base portion 40 and is in contact with the vehicle body panel 11, and a second lip portion 42 that extends from the tip of the base portion 40, and is in contact with the vehicle body panel 11. The first lip portion 41 extends while being inclined to the outer peripheral side toward the vehicle body panel 11 side, and the second lip portion 42 extends while being inclined to the inner peripheral side toward the vehicle body panel 11 side.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present disclosure relates to grommets.

Background Art

[0002] For example, the grommet described in Patent Document 1 is configured to be assembled into an assembly hole formed in a vehicle body panel and to prevent water from entering between the wire harness passed through the assembly hole and the assembly hole. Specifically, the grommet has an annular seal portion that adheres to a portion around the assembly hole in the vehicle body panel, and the seal portion suppresses the intrusion of water or the like into the assembly hole.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The inventor of the present invention has been studying the configuration of the seal portion that enables improvement of water stoppage in the grommet as described above. Therefore, an object of the present invention is to provide a grommet that enables improvement of water stoppage.

Means for Solving the Problems

[0005] The grommet of the present disclosure A covering portion having a cylindrical insertion portion through which a wire harness is inserted, and is continuous with the outer edge of the covering portion and is formed to face the covering portion has an opposing portion and extends from the surface of the facing portion opposite to the surface facing the covering portion and is formed in an annular shape a water stop portion, extends from the outer edge of the facing portion and a support portion located on the outer peripheral side of the water stop portion and the water stop portion has a base portion that bulges from the opposing portion, and a first lip portion that extends from the tip of the base portion et al. extend and a second lip portion, and the first lip portion extends extends while inclining toward the circumferential side, and the second lip portion and extends toward the circumferential side and, outward while inclining toward the circumferential side, and the second lip portion outward extends while inclining toward the circumferential side, and the second lip portion inward extends toward the circumferential side inwardExtend while inclining The base portion extends while inclining toward the outer peripheral side or the inner peripheral side. [Advantages of the Invention]

[0006] According to the present disclosure, it is possible to provide a grommet that enables improvement in water stoppage performance. [Brief Description of the Drawings]

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

[0008] [Description of Embodiments of the Present Disclosure] First, embodiments of the present disclosure will be listed and described. The grommet of the present disclosure is [1] A grommet assembled to an assembly hole of a vehicle body panel through which a wire harness is passed, the grommet including an opposing portion facing a portion around the assembly hole in the vehicle body panel, and a water-stopping portion extending from the opposing portion and contacting the vehicle body panel. The water-stopping portion forms an annular shape surrounding the periphery of the assembly hole. The water-stopping portion has a base portion extending from the opposing portion toward the vehicle body panel side, a first lip portion extending from the tip of the base portion and contacting the vehicle body panel, and a second lip portion extending from the tip of the base portion and contacting the vehicle body panel. The first lip portion extends while inclining toward the outer peripheral side toward the vehicle body panel side, and the second lip portion extends while inclining toward the inner peripheral side toward the vehicle body panel side.

[0009] According to this configuration, the water stop portion has a configuration in which the lip portion at the tip of the base portion is bifurcated. For this reason, it is possible to suitably increase the contact area between the water stop portion and the vehicle body panel. As a result, the water stopping property of the water stop portion is improved. Further, when the first lip portion and the second lip portion are brought into close contact with the vehicle body panel, the space surrounded by the first lip portion, the second lip portion, and the vehicle body panel can be made into a negative pressure, and the water stop portion can be adsorbed to the vehicle body panel. When the water stop portion is adsorbed to the vehicle body panel, it becomes difficult for a gap to occur between the vehicle body panel and the water stop portion. As a result, the water stopping property of the water stop portion is improved.

[0010] Further, according to the above configuration, while bringing the first lip portion and the second lip portion into close contact with the vehicle body panel, it is possible to reduce the insertion force when inserting the grommet into the assembly hole due to the deformation of the base portion.

[0011] [2] The base portion extends while inclining toward the outer peripheral side or the inner peripheral side toward the vehicle body panel side. According to this configuration, when the water stop portion is pressed against the vehicle body panel, the base portion of the water stop portion can be suitably bent toward the outer peripheral side or the inner peripheral side. Thereby, it is possible to more suitably reduce the insertion force when inserting the grommet into the assembly hole. As a result, it is possible to further contribute to the improvement of the assemblability of the grommet.

[0012] [3] The base portion extends while inclining toward the outer peripheral side toward the vehicle body panel side, and the extending direction of the base portion and the extending direction of the first lip portion are the same direction. According to this configuration, it is possible to suitably bring the first lip portion into close contact with the vehicle body panel.

[0013] [4] The second lip portion has a first extending portion extending from the base portion and a second extending portion extending from the tip of the first extending portion, and the inclination of the second extending portion is closer to perpendicular to the vehicle body panel than the inclination of the first extending portion.

[0014] According to this configuration, the tip of the second lip portion, that is, the tip of the second extending portion, can be brought into contact with the vehicle body panel at an angle closer to perpendicular. As a result, the second lip portion can be suitably adhered to the vehicle body panel.

[0015] [5] The tip position of the first lip portion is located farther from the opposing portion than the tip position of the second lip portion. According to this configuration, when inserting the grommet into the assembly hole, at the water stop portion, first the first lip portion contacts the vehicle body panel, and then the second lip portion contacts the vehicle body panel. As a result, in the assembled state with respect to the vehicle body panel, it is possible to more suitably compress and deform the first lip portion and the second lip portion.

[0016] [6] In the assembled state with respect to the vehicle body panel, each of the first lip portion and the second lip portion is configured to be separated from the opposing portion. According to this configuration, it is possible to prevent the first lip portion and the second lip portion adsorbed to the vehicle body panel from being crushed by the opposing portion. As a result, it is possible to suitably maintain the state in which the first lip portion and the second lip portion are adsorbed to the vehicle body panel.

[0017] [Details of Embodiments of the Present Disclosure] A specific example of the grommet of the present disclosure will be described below with reference to the drawings. In each drawing, for convenience of explanation, a part of the configuration may be shown exaggerated or simplified. Also, the dimensional ratios of each part may be different in each drawing. Also, "parallel", "orthogonal", and "perpendicular" in this specification include not only the cases of strict parallelism, orthogonality, and perpendicularity, but also the cases that are generally parallel, orthogonal, and perpendicular within the scope where the actions and effects in this embodiment are exhibited.

[0018] In addition, the "cylindrical shape" used in the description of this specification includes not only those in which the peripheral wall is continuously formed over the entire circumference in the circumferential direction, but also those in which a plurality of parts are combined to form a cylindrical shape, and those having a notch or the like in a part of the circumferential direction such as a C shape. Further, the "cylindrical shape" includes a circular shape, an elliptical shape, and a polygon having sharp or rounded corners. In addition, the term "annular" used in the description of this specification may refer to any structure forming a loop, or a continuous shape without ends, and a generally loop-shaped structure having a gap such as a C shape. Note that the "annular shape" includes, but is not limited to, a circular shape, an elliptical shape, and a polygon having sharp or rounded corners.

[0019] The grommet 10 of the present embodiment shown in FIG. 1 is attached to an attachment hole 12 formed in the vehicle body panel 11 of an automobile. A wire harness W is inserted into the attachment hole 12. The wire harness W is configured to include at least one electric wire. The grommet 10 ensures the water tightness between the attachment hole 12 and the wire harness W. Further, the grommet 10 also serves to prevent the wire harness W from interfering with the peripheral edge of the attachment hole 12.

[0020] The vehicle body panel 11 is, for example, a panel that partitions the interior and the exterior of the vehicle in an automobile. The exterior of the vehicle is, for example, an engine room. Of the two surfaces of the vehicle body panel 11, the surface facing the interior of the vehicle is defined as the first surface 13, and the surface facing the exterior of the vehicle is defined as the second surface 14. The vehicle body panel 11 has a bent portion 15 in which the peripheral edge of the attachment hole 12 is bent toward the second surface 14 side. The bent portion 15 is formed, for example, by a flanging process. The bent portion 15 is formed over the entire circumference of the attachment hole 12. The grommet 10 is assembled to the attachment hole 12, for example, from the first surface 13 side.

[0021] (Overall configuration of the grommet 10) As shown in FIG. 2, the grommet 10 includes an inner member 20 and a grommet main body 30.

[0022] The grommet body 30 is made of a highly flexible material. That is, the grommet body 30 is configured to be easily deformed as a whole. As the constituent material of the grommet body 30, for example, an elastomer such as EPDM (specifically, ethylene propylene diene rubber) can be used. The inner member 20 is made of a material with higher rigidity than the grommet body 30. That is, the inner member 20 is configured to be difficult to deform as a whole. As the constituent material of the inner member 20, for example, a synthetic resin material such as PP (specifically, polypropylene) can be used.

[0023] (Configuration of the inner member 20) The inner member 20 has a cylindrical portion 21 that is inserted into the assembly hole 12. The cylindrical portion 21 forms an annular shape along the periphery of the assembly hole 12. Also, the cylindrical portion 21 forms an annular shape that is slightly smaller than the periphery of the assembly hole 12. A wire harness W is inserted into the cylindrical portion 21. In the following description, the direction perpendicular to the central axis L of the assembly hole 12 is referred to as the first direction D.

[0024] The cylindrical portion 21 has locking pieces 22. For example, a plurality of locking pieces 22 are provided. The locking pieces 22 are configured to bend along the first direction D. The grommet 10 is fixed to the vehicle body panel 11 when the locking pieces 22 are caught on the periphery of the assembly hole 12. On the outer peripheral surface 21a of the cylindrical portion 21, for example, a groove portion 23 extending along the central axis L of the assembly hole 12 is formed. The groove portion 23 is formed at a position facing the locking pieces 22 in the first direction D.

[0025] The inner member 20 has a flange portion 24 that extends from the cylindrical portion 21 to the outer peripheral side. The flange portion 24 is provided, for example, at one axial end of the cylindrical portion 21. The outer shape of the flange portion 24 as viewed from the direction of the central axis L is larger than the assembly hole 12. In the state where the grommet 10 is assembled to the vehicle body panel 11, the flange portion 24 is located on the first surface 13 side of the vehicle body panel 11. In the following, the state where "the grommet 10 is assembled to the vehicle body panel 11" may be simply referred to as the "assembled state".

[0026] (Configuration of grommet body 30) The grommet body 30 has a covering portion 31, an opposing portion 32, a first water stop portion 33, a second water stop portion 34, and a support portion 35.

[0027] The covering portion 31 covers one side surface of the flange portion 24 in the direction of the central axis L and one end portion of the cylindrical portion 21. As shown in FIG. 1, the covering portion 31 has a cylindrical insertion portion 36. The wire harness W is inserted into the insertion portion 36 while ensuring water tightness.

[0028] As shown in FIGS. 2 and 3, the opposing portion 32 is formed continuously with the outer edge of the covering portion 31. The opposing portion 32 forms, for example, an annular shape along the periphery of the assembly hole 12. The flange portion 24 enters between the opposing portion 32 and the covering portion 31. Thereby, the grommet body 30 is held by the flange portion 24. In the assembled state, the opposing portion 32 faces the portion around the assembly hole 12 in the vehicle body panel 11 in the direction along the central axis L.

[0029] The opposing surface of the opposing portion 32 that faces the vehicle body panel 11 forms, for example, a planar shape orthogonal to the central axis L. The first water stop portion 33, the second water stop portion 34, and the support portion 35 extend from the opposing surface. On the opposing surface, for example, the inner peripheral side surface with respect to the second water stop portion 34 and the outer peripheral side surface with respect to the second water stop portion 34 are located on the same plane.

[0030] As shown in FIG. 4, each of the first water stop portion 33, the second water stop portion 34, and the support portion 35 extends from the opposing portion 32 and contacts the vehicle body panel 11. Each of the first water stop portion 33, the second water stop portion 34, and the support portion 35 forms an annular shape surrounding the periphery of the assembly hole 12. The second water stop portion 34 is provided on the outer peripheral side of the first water stop portion 33. The support portion 35 is provided on the outer peripheral side of the second water stop portion 34. The opposing portion 32, the first water stop portion 33, the second water stop portion 34, and the support portion 35 are sandwiched and compressed by the flange portion 24 and the vehicle body panel 11. In the assembled state, the opposing portion 32, the first water stop portion 33, the second water stop portion 34, and the support portion 35 are located, for example, on the first surface 13 side of the vehicle body panel 11, that is, on the vehicle interior side. In this case, the first water stop portion 33, the second water stop portion 34, and the support portion 35 contact the first surface 13 of the vehicle body panel 11.

[0031] (Configuration of the first water stop portion 33) The first water stop portion 33 extends, for example, from the inner edge of the opposing portion 32. The first water stop portion 33 extends substantially along the central axis L of the assembly hole 12, for example. In the non-assembled state, the first water stop portion 33 faces the locking piece 22 in the direction along the central axis L, for example. The first water stop portion 33 has an inclined surface 37 on its outer peripheral side surface, for example. The inclined surface 37 is inclined inward from the opposing portion 32 side toward the vehicle body panel 11 side. The inner peripheral side surface of the first water stop portion 33 and the inner peripheral side surface of the opposing portion 32 face the outer peripheral surface 21a of the cylindrical portion 21 in the first direction D.

[0032] In the assembled state, the first water stop portion 33 is sandwiched between the peripheral edge of the assembly hole 12 and the cylindrical portion 21 in the first direction D. In the present embodiment, the bent portion 15 bent to the side opposite to the opposing portion 32 side is formed on the peripheral edge of the assembly hole 12. Thereby, the first water stop portion 33 is sandwiched between the bent portion 15 and the cylindrical portion 21 in the first direction D. The bent portion 15 is formed by bending the plate material constituting the vehicle body panel 11. Thereby, the bent portion 15 has a curved surface. The first water stop portion 33 contacts the curved surface of the bent portion 15.

[0033] (Configuration of the second water stop portion 34) As shown in FIGS. 2 and 3, the second water stop portion 34 has a base portion 40, a first lip portion 41, and a second lip portion 42.

[0034] The base portion 40 forms an annular shape along the periphery of the mounting hole 12. The base portion 40 extends while inclining toward the outer peripheral side toward the vehicle body panel 11 side. As a result, as shown in FIG. 4, due to the contact between the tip of the second water stop portion 34 and the vehicle body panel 11, the base portion 40 is likely to fall toward the outer peripheral side. Therefore, the insertion force when assembling the grommet 10 into the mounting hole 12 is reduced. Further, due to the inclined shape of the base portion 40, the deformation of the base portion 40 in the assembled state is limited to the deformation toward the outer peripheral side. Thereby, the manner of deformation of the second water stop portion 34 in the assembled state is stabilized.

[0035] As shown in FIGS. 2 and 3, each of the first lip portion 41 and the second lip portion 42 extends from the tip of the base portion 40. The first lip portion 41 and the second lip portion 42 form an annular shape along the periphery of the mounting hole 12. The second lip portion 42 is provided on the inner peripheral side of the first lip portion 41. The first lip portion 41 and the second lip portion 42 face each other in the first direction D. The first lip portion 41 extends while inclining toward the outer peripheral side from the opposing portion 32 side toward the vehicle body panel 11 side. The second lip portion 42 extends while inclining toward the inner peripheral side, which is the first water stop portion 33 side, from the opposing portion 32 side toward the vehicle body panel 11 side.

[0036] The direction in which the base portion 40 extends and the direction in which the first lip portion 41 extends are, for example, the same direction. That is, the base portion 40 and the first lip portion 41 are formed so that the cross-sectional shape parallel to the central axis L and passing through the central axis L extends linearly. The second lip portion 42 extends so as to branch from the middle portion of the linearly extending portion formed by the base portion 40 and the first lip portion 41. In the non-assembled state, the tip position of the first lip portion 41 is farther from the opposing portion 32 than the tip position of the second lip portion 42. In the assembled state, the tip of the first lip portion 41 contacts the first surface 13 of the vehicle body panel 11.

[0037] The second lip portion 42 has a first extending portion 51 extending from the base portion 40 and a second extending portion 52 extending from the tip of the first extending portion 51. The inclination angle of the first extending portion 51 and the inclination angle of the second extending portion 52 are different from each other. That is, the second lip portion 42 has a bent portion 53 between the first extending portion 51 and the second extending portion 52. The inclination of the second extending portion 52 is closer to perpendicular to the vehicle body panel 11 than the inclination of the first extending portion 51. In the assembled state, the second extending portion 52 contacts the first surface 13 of the vehicle body panel 11.

[0038] (Configuration of the support portion 35) As shown in FIGS. 2 and 3, the support portion 35 forms an annular shape along the periphery of the assembly hole 12. The support portion 35 extends from the outer edge of the opposing portion 32 toward the vehicle body panel 11. In the non-assembled state, the tip of the support portion 35 extends toward the vehicle body panel 11 while being displaced, for example, toward the inner peripheral side, that is, the second water stop portion 34 side.

[0039] As shown in FIG. 4, the entire circumferential direction of the support portion 35 is in close contact with the vehicle body panel 11. Since the tip of the support portion 35 is displaced toward the inner peripheral side in the non-assembled state as described above, the tip of the support portion 35 bends so as to face the inner peripheral side by contact with the vehicle body panel 11 in the assembled state. The support portion 35 serves to stabilize the posture of the grommet 10 in the assembled state.

[0040] The operation of this embodiment will be described. On the vehicle body panel 11, water is likely to splash on the second surface 14 side, which is the outside of the vehicle compartment. The water on the second surface 14 side tries to penetrate to the first surface 13 side through the gap between the periphery of the assembly hole 12 and the cylindrical portion 21 of the inner member 20. Here, the first water stop portion 33 is compressed and sandwiched between the periphery of the assembly hole 12 and the outer peripheral surface 21a of the cylindrical portion 21 over its entire circumference. Thereby, the penetration of the water on the second surface 14 side into the gap between the assembly hole 12 and the cylindrical portion 21 is suppressed.

[0041] Water that could not be prevented from entering by the first water stop portion 33 enters between the first water stop portion 33 and the second water stop portion 34. This water is stopped by the second water stop portion 34 from entering the outer peripheral side of the second water stop portion 34. Here, in the assembled state, the second water stop portion 34 is adsorbed to the first surface 13 of the vehicle body panel 11 by the shapes of the first lip portion 41 and the second lip portion 42. That is, the space surrounded by the first lip portion 41, the second lip portion 42, and the vehicle body panel 11 becomes a negative pressure, and as a result, the first lip portion 41 and the second lip portion 42 are attached to the vehicle body panel 11 by the action of the external atmospheric pressure. In the state where the second water stop portion 34 is adsorbed to the vehicle body panel 11, the first lip portion 41 and the second lip portion 42 are in contact with the vehicle body panel 11 without distortion. Therefore, it is extremely difficult for a gap to form between the first lip portion 41 and the second lip portion 42 and the vehicle body panel 11.

[0042] In addition, in the assembled state, each of the first lip portion 41 and the second lip portion 42 is separated from the opposing portion 32. Thereby, the first lip portion 41 and the second lip portion 42 adsorbed to the vehicle body panel 11 are prevented from being crushed by the opposing portion 32. For this reason, the state where the first lip portion 41 and the second lip portion 42 are adsorbed to the vehicle body panel 11 is preferably maintained.

[0043] Most of the water trying to enter from the second surface 14 side to the first surface 13 side of the vehicle body panel 11 is stopped by the first water stop portion 33 and the second water stop portion 34. However, there may be a case where the second water stop portion 34 cannot stop the water either, and a small amount of water enters the outer peripheral side of the second water stop portion 34. At this time, the water that has entered the outer peripheral side of the second water stop portion 34 is stopped by the support portion 35 that is in close contact with the first surface 13. That is, the support portion 35 is configured as a third water stop portion in the grommet 10.

[0044] As described above, the grommet 10 of the present embodiment has a water stop structure that stops water entering from the second surface 14 side to the first surface 13 side of the vehicle body panel 11 in three stages: the first water stop portion 33, the second water stop portion 34, and the support portion 35.

[0045] The effects of this embodiment will be described. (1) The second water stop portion 34 has a configuration in which the lip portion at the tip of the base portion 40 is bifurcated. Therefore, it is possible to suitably increase the contact area between the second water stop portion 34 and the vehicle body panel 11. As a result, the water stopping property of the second water stop portion 34 is improved.

[0046] Also, in the second water stop portion 34, the first lip portion 41 extends while inclining toward the outer peripheral side toward the vehicle body panel 11 side, and the second lip portion 42 extends while inclining toward the inner peripheral side toward the vehicle body panel 11 side. Thereby, when the first lip portion 41 and the second lip portion 42 are brought into close contact with the vehicle body panel 11, the space surrounded by the first lip portion 41, the second lip portion 42, and the vehicle body panel 11 is made negative pressure, and the second water stop portion 34 can be adsorbed to the vehicle body panel 11. When the second water stop portion 34 is adsorbed to the vehicle body panel 11, a gap is less likely to occur between the vehicle body panel 11 and the second water stop portion 34. As a result, the water stopping property of the second water stop portion 34 is improved.

[0047] Also, according to the above configuration, while bringing the first lip portion 41 and the second lip portion 42 into close contact with the vehicle body panel 11, it is possible to reduce the insertion force when inserting the grommet 10 into the assembly hole 12 due to the deformation of the base portion 40.

[0048] (2) The base portion 40 extends while inclining toward the outer peripheral side toward the vehicle body panel 11 side. According to this configuration, when the second water stop portion 34 is pressed against the vehicle body panel 11, the base portion 40 of the second water stop portion 34 can be suitably bent toward the outer peripheral side or the inner peripheral side. Thereby, it is possible to more suitably reduce the insertion force when inserting the grommet 10 into the assembly hole 12. As a result, it can contribute more to the improvement of the assemblability of the grommet 10.

[0049] (3) The extending direction of the base portion 40 and the extending direction of the first lip portion 41 are the same direction. According to this configuration, it is possible to suitably bring the first lip portion 41 into close contact with the vehicle body panel 11.

[0050] (4) The second lip portion 42 has a first extending portion 51 extending from the base portion 40 and a second extending portion 52 extending from the tip of the first extending portion 51. And the inclination of the second extending portion 52 forms an inclination closer to perpendicular to the vehicle body panel 11 than the inclination of the first extending portion 51. According to this configuration, the tip of the second lip portion 42, that is, the tip of the second extending portion 52, can be brought into contact with the vehicle body panel 11 at an angle closer to perpendicular. Thereby, it becomes possible to suitably adhere the second lip portion 42 to the vehicle body panel 11.

[0051] (5) The tip position of the first lip portion 41 is at a position farther from the opposing portion 32 than the tip position of the second lip portion 42. According to this configuration, when inserting the grommet 10 into the assembly hole 12, in the second water stop portion 34, first the first lip portion 41 contacts the vehicle body panel 11, and then the second lip portion 42 contacts the vehicle body panel 11. Thereby, in the assembled state with respect to the vehicle body panel 11, it becomes possible to more suitably compress and deform the first lip portion 41 and the second lip portion 42.

[0052] (6) In the assembled state with respect to the vehicle body panel 11, each of the first lip portion 41 and the second lip portion 42 is configured to be separated from the opposing portion 32. According to this configuration, it becomes possible to prevent the first lip portion 41 and the second lip portion 42 adsorbed to the vehicle body panel 11 from being crushed by the opposing portion 32. As a result, it becomes possible to suitably maintain the state where the first lip portion 41 and the second lip portion 42 are adsorbed to the vehicle body panel 11.

[0053] (7) Each of the first water stop portion 33 and the second water stop portion 34 forms an annular shape surrounding the periphery of the assembly hole 12. And the second water stop portion 34 is provided on the outer peripheral side of the first water stop portion 33. According to this configuration, when water infiltrates from the second surface 14 side of the vehicle body panel 11 to the first surface 13 side through the assembly hole 12, the infiltration of the water can be suppressed in multiple stages by the first water stop portion 33 and the second water stop portion 34. Thereby, the water stopping property of the grommet 10 can be improved.

[0054] (8) The first water stop portion 33 is sandwiched between the peripheral edge of the assembly hole 12 and the cylindrical portion 21 of the inner member 20 in a first direction D orthogonal to the central axis L of the assembly hole 12. Therefore, it is possible to preferably stop the water in the gap between the peripheral edge of the assembly hole 12 and the cylindrical portion 21 by the first water stop portion 33.

[0055] Further, since the inner member 20 is a member with relatively high rigidity, a gap is set between the cylindrical portion 21 of the inner member 20 and the assembly hole 12 in order to prevent interference between the cylindrical portion 21 of the inner member 20 and the assembly hole 12 due to dimensional variations. And a flexible first water stop portion 33 is interposed in the gap between the cylindrical portion 21 and the assembly hole 12. Thereby, the rattling of the inner member 20 is suppressed by the first water stop portion 33.

[0056] Further, the first water stop portion 33 enters the gap between the cylindrical portion 21 and the assembly hole 12 over the entire circumference. Therefore, the first water stop portion 33 serves to guide the cylindrical portion 21 so that the central axis of the cylindrical portion 21 coincides with the central axis L of the assembly hole 12. Thus, since the inner member 20 is positioned at an appropriate position by the first water stop portion 33, it is possible to provide the grommet 10 that exhibits stable water stopping performance.

[0057] (9) The vehicle body panel 11 has a bent portion 15 in which the peripheral edge of the assembly hole 12 is bent to the side opposite to the facing portion 32 side. And the first water stop portion 33 is sandwiched between the bent portion 15 of the assembly hole 12 and the cylindrical portion 21 in the first direction D. Thereby, a configuration can be adopted in which the first water stop portion 33 does not contact the edge of the peripheral edge of the assembly hole 12. Therefore, damage to the first water stop portion 33 can be suppressed, and as a result, deterioration of the water stopping performance of the first water stop portion 33 can be suppressed.

[0058] (10) The vehicle body panel 11 is a panel that separates the interior and exterior of the vehicle in the vehicle. The opposing portion 32, the first water stop portion 33, and the second water stop portion 34 are located on the interior side of the vehicle body panel 11. The exterior side of the vehicle body panel 11 is a place where water is likely to penetrate. When water outside the vehicle tries to penetrate into the vehicle interior through the gap between the periphery of the assembly hole 12 and the cylindrical portion 21 of the inner member 20, the penetration of the water can be first suppressed by the first water stop portion 33 and then by the second water stop portion 34.

[0059] (11) The grommet 10 includes a support portion 35 that extends from the opposing portion 32 and contacts the vehicle body panel 11. The support portion 35 forms an annular shape surrounding the periphery of the assembly hole 12. And the support portion 35 is provided on the outer peripheral side of the second water stop portion 34. According to this configuration, the posture of the grommet 10 in the state assembled to the vehicle body panel 11 is stabilized by the support portion 35 that contacts the vehicle body panel 11. Thereby, for example, it is possible to suppress the grommet 10 from tilting with respect to the assembly hole 12 due to the force received from the wire harness W or the like. As a result, it is possible to suppress a partial decrease in the contact pressure of the first water stop portion 33 and the second water stop portion 34 against the vehicle body panel 11.

[0060] (12) The support portion 35 extends from the outer edge of the opposing portion 32. According to this configuration, the inclination of the grommet 10 can be more suitably suppressed by the support portion 35 extending from the outer edge of the opposing portion 32.

[0061] (13) The entire circumferential direction of the support portion 35 is in close contact with the vehicle body panel 11. According to this configuration, it becomes possible to stop the water transmitted to the vehicle body panel 11 by the support portion 35. This embodiment can be implemented with the following modifications. This embodiment and the following modification examples can be implemented in combination with each other within a technically non - conflicting range.

[0062] · In the first direction D, as a configuration in which the first water stop portion 33 is not sandwiched between the periphery of the assembly hole 12 and the cylindrical portion 21, the first water stop portion 33 may be configured to simply contact, for example, the first surface 13 of the vehicle body panel 11.

[0063] · The shape of the base portion 40 is not limited to the above-described embodiment and may be appropriately changed. For example, the base portion 40 may be configured to extend while inclining toward the inner peripheral side toward the vehicle body panel 11 side. According to this configuration, when the second water stop portion 34 is pressed against the vehicle body panel 11, the base portion 40 of the second water stop portion 34 can be suitably bent toward the inner peripheral side. Further, for example, the base portion 40 may be configured to extend perpendicular to the vehicle body panel 11.

[0064] · The shape of the first lip portion 41 is not limited to the above-described embodiment and may be appropriately changed. For example, the inclination angle of the first lip portion 41 may be made different from the inclination angle of the base portion 40. Further, the first lip portion 41 may be configured to bend at its intermediate portion.

[0065] · The shape of the second lip portion 42 is not limited to the above-described embodiment and may be appropriately changed. For example, the second lip portion 42 may be configured to extend in a straight line without having the bent portion 53 in the second lip portion 42.

[0066] · In the second water stop portion 34 of the above-described embodiment, the tip position of the second lip portion 42 may be set at a position farther from the opposing portion 32 than the tip position of the first lip portion 41. According to this configuration, when the grommet 10 is inserted into the mounting hole 12, in the second water stop portion 34, first the second lip portion 42 contacts the vehicle body panel 11, and then the first lip portion 41 can be configured to contact the vehicle body panel 11.

[0067] · In the above-described embodiment, in the assembled state, each of the first lip portion 41 and the second lip portion 42 is separated from the opposing portion 32, but not limited thereto, in the assembled state, the first lip portion 41 and the second lip portion 42 may be configured to contact the opposing portion 32.

[0068] · The position of the base of the support portion 35 may be changed from the outer edge of the opposing portion 32 toward the inner peripheral side. ·In the above-described embodiment, the entire circumferential direction of the support portion 35 is in close contact with the vehicle body panel 11, but it is not limited thereto. For example, a part of the circumferential direction of the support portion 35 may be configured to contact the vehicle body panel 11. Further, for example, the support portion 35 may be configured to be present at a plurality of points in the circumferential direction of the opposing portion 32. That is, as in these modification examples, it is not necessarily required to provide the support portion 35 with water-stopping properties.

[0069] ·In the above-described embodiment, the first water-stopping portion 33 and the support portion 35 may be omitted. ·The forming materials of the grommet main body 30 and the inner member 20 are not limited to those in the above-described embodiment and can be appropriately changed according to the configuration.

[0070] ·In the above-described embodiment, the grommet 10 is applied to the grommet that is assembled from the indoor side with respect to the assembly hole 12, but it may be applied to the grommet that is assembled from the outdoor side. ·In the above-described embodiment, the grommet 10 is applied to the grommet that is attached to the assembly hole 12 in which the bent portion 15 is formed, but it is not limited thereto and can be applied to the grommet that is attached to the assembly hole 12 without the bent portion 15.

[0071] ·In the above-described embodiment, the grommet 10 is composed of a grommet main body 30 made of a material with high flexibility such as an elastomer and an inner member 20 having higher rigidity than the grommet main body 30. However, it is not particularly limited thereto and can be applied to a grommet composed only of a material with high flexibility.

[0072] ·The embodiments and modification examples disclosed this time should be considered as illustrative in all respects and not restrictive. The scope of the present invention is shown not by the above description but by the claims, and it is intended that all modifications within the meaning and scope equivalent to the claims are included.

Explanation of Reference Numerals

[0073] 10 Grommet 11 Vehicle body panel 12 Assembly hole 13 First side 14 Second side 15 Flexure part 20 Inner member 21 Cylindrical part 21a Outer peripheral surface 22 Locking piece 23 Groove part 24 Flange part 30 Grommet body 31 Coating part 32 Opposing part 33 First water stop part 34 Second water stop part (water stop part) 35 Support part 36 Insertion part 37 Inclined surface 40 Base part 41 First lip part 42 Second lip part 51 First extension part 52 Second extension part 53 Flexure part D First direction L Central axis W Wire harness

Claims

1. A covering portion having a cylindrical insertion portion through which a wire harness is inserted, a facing portion that is connected to an outer edge of the covering portion and is formed facing the covering portion; a water stop portion extending from a surface of the facing portion opposite to a surface facing the covering portion and formed in an annular shape; A support portion extending from an outer edge of the facing portion and positioned on an outer circumferential side of the water stop portion; Equipped with The water stop portion has a base portion extending from the facing portion, and a first lip portion and a second lip portion extending from a tip of the base portion, The first lip portion extends while inclining toward the outer periphery, The second lip portion extends while inclining toward the inner circumferential side, The base portion extends while inclining toward the outer circumferential side or the inner circumferential side. Grommet.

2. The base portion extends while inclining toward the outer periphery, The extending direction of the base portion and the extending direction of the first lip portion are the same direction. The grommet of claim 1 .

3. The second lip portion has a first extension portion extending from the base portion and a second extension portion extending from a tip end of the first extension portion, The inclination of the second extension portion is closer to perpendicular to the opposite surface than the inclination of the first extension portion. The grommet of claim 2.

4. A tip position of the first lip portion is located farther from the opposing portion than a tip position of the second lip portion. The grommet according to claim 2 or 3.

5. The tip of the support portion extends while inclining toward the inner periphery. The grommet according to any one of claims 1 to 4.

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