JP6490448B2 - Grommet - Google Patents

Description

  The present invention relates to a grommet that protects a wire harness that penetrates a dash panel disposed between a vehicle compartment and an engine room, for example.

  For example, since the interior of an automobile and the engine room are separated by a metal panel called a dash panel, the wire harness routed throughout the vehicle must pass through a through-hole formed in the panel.

  It is necessary to protect the wire harness that penetrates the vehicle body through hole from the metal panel, and to prevent moisture from entering the vehicle interior from the vehicle body through hole, and has a water-tightness and uses a grommet that protects the wire harness It has been.

  For example, a general grommet described in Patent Document 1 has a cylindrical shape in which a wire harness can be inserted, and has a vehicle body locking groove that is locked to a vehicle body through hole, and both sides of the vehicle body locking groove. And a small-diameter cylindrical portion having a diameter smaller than that of the vehicle body through-hole and a large-diameter portion that expands from the small-diameter cylindrical portion to the vehicle body locking groove, and the concave portion having a circular cross section and a concave shape is provided in the large-diameter portion. ing.

  The grommet is mounted in such a way that the grommet is inserted into the vehicle body through-hole together with the wire harness from the engine room, and the grommet is pulled from the vehicle interior together with the wire harness so as to work across both spaces separated by the panel. It was necessary to place one worker in each space and work by two people, or to move between both spaces and work alone.

  When this penetration work is performed by one person, the cylindrical grommet may roll accidentally due to the weight of the wire harness or the like while the worker moves from the engine room to the passenger compartment. The mounting workability was bad.

Japanese Patent Laid-Open No. 11-041756

  Then, an object of this invention is to provide the grommet which improves mounting workability | operativity.

  The present invention relates to a frustum-shaped frustum arranged between a large-diameter portion having a diameter larger than that of the through-hole at a mounting target, a small-diameter portion having a diameter smaller than that of the through-hole, and the large-diameter portion and the small-diameter portion. A cylindrical grommet, which is disposed between the portion, the large diameter portion and the frustum portion, and a groove-like groove portion having the same diameter as the through hole along the axial direction. The small-diameter portion and the frustum portion in the state are used as passage portions to be attached through the through hole, and the passage portion is temporarily attached to the through-hole on the frustum portion side of the small diameter portion. In addition, a temporary mounting portion having a rolling restraining shape that restrains rolling around the axial direction is provided.

The mounting target location is a concept including various panels such as a dash panel and a door panel that separate the engine room from the vehicle interior.
The rolling suppression shape is a concept including, for example, a shape that suppresses rolling by making point contact with the through hole at two or more points, or an arc shape formed in an arc shape having the same diameter as the through hole. is there.
The temporary mounting portion includes a concave temporary mounting portion that is recessed inwardly, a temporary mounting portion that protrudes outward, or a temporary mounting portion where the outer surface of the passing portion touches the panel. It is a concept.

According to the present invention, the grommet mounting workability can be improved.
More specifically, the grommet can be stably mounted on the through hole by providing the grommet with a temporary mounting portion having a rolling restraining shape.

  Therefore, in the temporary mounting state, the grommet can be prevented from rolling carelessly due to the weight of the wire harness, and the stable temporary mounting state can be maintained, so that the grommet mounting workability can be improved. it can.

As an aspect of the present invention, the temporary mounting portion can be configured by a flat flat surface along the axial direction.
The planar flat surface along the axial direction means not only the width direction intersecting the axial direction and the parallel planar flat surface along the axial direction, but also intersecting the axial direction if the width direction is met. It is a concept that includes a flat surface along the direction of movement.

By this invention, it can suppress reliably that the grommet of a temporary mounting state rolls carelessly.
In detail, because the temporary mounting part of the grommet is configured with a flat surface, the grommet is not prepared due to the weight of the wire harness, etc., since the point contact is made at two points with the through hole provided in the panel in the temporary mounting state. Can be reliably suppressed. Therefore, the grommet mounting workability can be improved reliably.

As an aspect of the present invention, the temporary mounting portion can be constituted by a concave portion in which the outer surface of the passage portion is formed in a concave shape.
According to the present invention, it is possible to prevent the temporarily attached grommet from rolling, and to prevent the grommet from coming out of the through hole.

  More specifically, the temporary mounting portion is constituted by a concave portion in which the outer surface of the passage portion is formed in a concave shape, so that the bottom surface of the concave portion is point-contacted at two points with the through-hole provided in the panel in the same manner as the flat surface described above. Therefore, inadvertent rolling due to the weight of the wire harness can be reliably suppressed.

Furthermore, even if an external force in the direction in which the grommet is pulled out acts due to the weight of the wire harness or the like, the side surface of the recess can be caught in the through hole, and the grommet can be prevented from coming out of the through hole.
Therefore, the stable temporary mounting state of the grommet can be reliably held, and the grommet can be inadvertently rolled or the grommet can be prevented from being pulled out in the pulling out direction, thereby improving the workability more reliably. .

Further, as an aspect of the present invention, the temporary mounting portion can be formed across the small diameter portion and the frustum portion.
According to the present invention, the grommet can be easily guided with respect to the through hole, and a stable temporary mounting state of the grommet can be obtained.

More specifically, the side surface on the frustum portion side of the temporary mounting portion is formed by forming the concave temporary mounting portion straddling the frustum portion gradually expanding from the small diameter portion and the small diameter portion. Therefore, when temporarily attaching the grommet to the through-hole, the temporary attachment portion is guided to the through-hole simply by abutting the side surface of the temporary attachment portion on the frustum portion side against the attachment target location. be able to.
Thereby, it can suppress that the grommet of a temporary mounting state rolls carelessly.

Further, the side face on the frustum portion side of the temporary mounting portion formed with a large diameter can prevent the grommet from slipping out in the pulling out direction.
Therefore, the grommet mounting workability can be further improved.

As an aspect of the present invention, the small-diameter portion may include a slit formed in a concave shape from the distal end toward the frustum portion, and the temporary mounting portion may be disposed at the proximal end portion of the slit.
This invention can prevent the grommet from being damaged.

  Specifically, the wire harness diameter varies depending on the specifications, etc., but the grommet is provided with a slit, so that the wire harness having a larger diameter than the inner diameter of the smaller diameter portion can be widened. The wire harness having a diameter smaller than the inner diameter of the small diameter portion can be fixed by narrowing the small diameter portion so as to be in close contact with the inserted wire harness.

  Furthermore, by arranging the temporary mounting portion at the base end portion of the slit, the temporary mounting portion can be inserted into the grommet when the wire harness having a diameter larger than the inner diameter of the small diameter portion is inserted as described above. It is possible to prevent the grommet from being damaged by tearing the part.

  Furthermore, since the provisional mounting portion can be prevented from thinning when the temporary mounting portion is formed at a position in the circumferential direction different from the slit, the grommet is damaged even when the insertion force is applied when mounting to the through hole. Can be prevented.

  Further, as an aspect of the present invention, the frustum portion includes a plurality of ribs that are smaller in diameter than the groove portion and project outward in the radial direction, and are arranged at predetermined intervals in the circumferential direction. While forming along the said circumferential direction, the protrusion part which protrudes in the said radial direction is provided, and at least 1 said rib can be arrange | positioned on the opposite side of the said temporary mounting part in the said circumferential direction.

  The opposite side of the temporary mounting portion in the circumferential direction refers to the opposite surface across the central axis from the temporary mounting portion in the circumferential direction, that is, not only at a position of 180 degrees with respect to the temporary mounting portion, but also at 180 degrees. It is a concept that includes a range from 90 degrees to 270 degrees with respect to the temporary mounting portion that straddles the position, that is, the entire facing side from the central axis, and more preferably positions in the range of 135 degrees and 225 degrees.

According to the present invention, it is possible to more reliably prevent the grommet from rolling carelessly or coming out of the through hole.
More specifically, by mounting at least one rib on the opposite side of the temporary mounting portion in the circumferential direction, the mounting target for forming a through hole by further pushing the opposite side of the temporary mounting portion in the circumferential direction into the through hole The protrusion can be locked at the location.
Thereby, the temporary mounting state with respect to the hole can be more reliably maintained and workability can be improved while preventing the grommet from rolling carelessly or coming out of the through hole.

  The present invention can provide a grommet that improves mounting workability.

The perspective view of the grommet seen from the passage part side. The perspective view of the grommet seen from the non-passing site | part side. Sectional drawing of the grommet in AA arrow view. Sectional drawing of the grommet in the BB arrow. Schematic of a 1st temporary mounting process. Schematic of a 2nd temporary mounting process. The schematic diagram of a temporary mounting | wearing cancellation | release process. Schematic of the mounting process. Schematic of the 2nd temporary mounting process in other embodiment.

An embodiment of the present invention will be described with reference to FIGS.
1 shows a perspective view of the grommet 1 as viewed from the passage portion 2 side, FIG. 2 shows a perspective view of the grommet 1 as viewed from the non-passage portion 3 side, and FIG. An arrow sectional view is shown and FIG. 4 has shown BB arrow sectional drawing in FIG.
FIG. 5 shows a cross-sectional view after completion of the first temporary mounting step, FIG. 6 shows a cross-sectional view after completion of the second temporary mounting step, FIG. 7 shows a cross-sectional view after completion of the temporary mounting release step, FIG. 8 shows a cross-sectional view of the completion of the mounting process.

  1 to 4, the wire harness WH inserted through the grommet 1 is shown in a transparent state. In FIGS. 5 to 8, the wire harness WH is omitted and only the grommet 1 and the dash panel 60 are shown. It is shown.

  The grommet 1 protects the wire harness WH routed through the dash panel 60 that separates the engine room and the vehicle interior of the automobile, and is configured in a substantially cylindrical shape with rubber. As shown in FIG. 4, the wire harness WH is attached to the panel hole 61 of the dash panel 60 while surrounding the wire harness WH to protect the wire harness WH from the edge of the dash panel 60 and through the panel hole 61 to the vehicle interior. Prevents moisture from entering.

  As shown in FIGS. 1 and 2, the grommet 1 is formed in a cylindrical shape that is continuous in the axial direction X so as to surround the wire harness WH, and passes through the panel hole 61 when being attached to the panel hole 61. The passage part 2 that does not pass through the panel hole 61, and the concave groove part 4 that is disposed in the panel hole 61 in a state where the panel hole 61 is mounted.

  Here, in order to facilitate understanding, in the axial direction X, the passing site 2 side is defined as the distal end Xa, and the non-passing site 3 side is defined as the proximal end Xb. Further, the upper side in the vertical direction of the vehicle with the grommet 1 mounted in the panel hole 61 is the vehicle upper side Hu, and the lower side of the vehicle is the vehicle lower side Hd (see FIGS. 3 to 8).

  As shown in FIG. 3, the passage part 2 has a cylindrical first small-diameter portion 10 formed in a diameter smaller than the panel hole 61 in order from the tip Xa, and a truncated cone shape that gradually increases in diameter toward the base end Xb. And the first frustum portion 20.

The non-passing part 3 includes, in order from the tip Xa, a disk-shaped large-diameter portion 30 formed to have a diameter larger than that of the panel hole 61, and a truncated cone-shaped second frustum portion that gradually decreases in diameter toward the base end Xb. 40 and a cylindrical second small diameter portion 50 formed to have a smaller diameter than the panel hole 61.
The groove 4 is formed in a concave shape having the same diameter as the panel hole 61.

  In other words, the grommet 1 includes, in order from the tip Xa, the first small diameter portion 10 and the first frustum portion 20 constituting the passage portion 2, the groove portion 4, the large diameter portion 30 constituting the non-passage portion 3, and the second. The frustum part 40 and the second small diameter part 50 are arranged along the axial direction X.

As shown in FIG. 1, the first small-diameter portion 10 constituting the passage portion 2 includes a first slit 110 cut out in a concave shape from the distal end Xa to the proximal end Xb, and a concave portion 120 whose outer surface is formed in a concave shape. Yes.
Two first slits 110 are provided in the facing portion of the first small diameter portion 10 in the circumferential direction.

As shown in FIGS. 3 and 4, the concave portion 120 is formed so that the outer surface thereof is concave in the vicinity of the base end Xb of the first slit 110 and straddling the boundary with the first frustum portion 20.
The concave portion 120 includes a bottom surface 121 formed in a planar shape parallel to the axial direction X, and a first side surface 122 on the distal end Xa side and a first side surface on the proximal end Xb side which are side surfaces formed along a plane orthogonal to the axial direction X. It is comprised by the 2 side surface 123, and the boundary protrusion part 124 which protrudes toward the front-end | tip Xa is provided in the boundary of the 2nd side surface 123 and the 1st slit 110. As shown in FIG.

  In addition, the first frustum portion 20 constituting the passage part 2 includes a rib 210 protruding radially outward from the outer surface, and a protruding portion 220 protruding radially outward from the radial outer surface 211 of the rib 210 along the circumferential direction. And.

  As shown in FIG. 3, the rib 210 protrudes so that the distance from the central axis Xl of the grommet 1 to the radially outer surface 211 is about three-fourths of the radius of the panel hole 61, and the tip Xa of the rib 210 A taper surface 213 is provided in which a corner portion formed by the distal end side surface 212 and the radially outer surface 211 is reduced in diameter toward the distal end Xa.

  As shown in FIGS. 1, 3, and 4, the rib 210 configured as described above has the first frustum portion 20 so that the tip side surface 212 and the second side surface 123 of the recess 120 are substantially flush with each other. Four are arranged at equal intervals along the circumferential direction.

  Specifically, two of the four ribs 210 are disposed at the same position as the recess 120 in the circumferential direction, as shown in FIG. That is, the two ribs 210 are each arranged at a position of 180 degrees in the circumferential direction with the recess 120 as a reference.

  The remaining two ribs 210 are arranged in the middle of the recess 120 in the circumferential direction. That is, the remaining two ribs 210 are disposed at 90 degrees in the circumferential direction with respect to the recess 120.

Furthermore, a convex portion 214 that protrudes toward the tip Xa is provided on one of the ribs 210 disposed at the same position as the concave portion 120 in the circumferential direction.
As shown in FIG. 1, the protruding portion 220 is formed to protrude slightly radially outward from the radially outer surface 211 of the rib 210 along the circumferential direction.

As shown in FIG. 2, the large-diameter portion 30 constituting the non-passing portion 3 is an internal hollow cylindrical columnar protrusion protruding from the surface on the base end Xb side of the large-diameter portion 30 toward the base end Xb. 310 is provided.
The cylindrical protrusion 310 is arranged at the same position as the convex portion 214 in the circumferential direction.

Further, the second small diameter portion 50 constituting the non-passing portion 3 includes a second slit 510 cut out in a concave shape from the proximal end Xb of the second small diameter portion 50 toward the distal end Xa.
In the circumferential direction, two second slits 510 are provided at opposing portions of the second small diameter portion 50, and these second slits 510 are arranged at the same position as the first slit 110 in the circumferential direction.

  The grommet 1 configured as described above is attached to the panel hole 61 of the dash panel 60 by temporarily inserting the grommet 1 into the panel hole 61 by inserting the wire harness WH from the engine room side to the vehicle interior side. The engine room side work process and the temporarily installed grommet 1 are pulled from the vehicle interior side, and the vehicle interior side work process for attaching the grommet 1 to the panel hole 61 is performed in this order.

  The engine room side work process includes a first temporary mounting process in which the grommet 1 is inserted and temporarily mounted until the second side surface 123 abuts against the dash panel 60, and a first temporary mounting process in which the protruding portion 220 is locked to the panel hole 61 and temporarily mounted. 2 Temporary mounting process.

  The vehicle interior side work process includes a temporary mounting release process of releasing the temporary mounting state by pulling the grommet 1 so that all the ribs 210 are disposed inside the panel hole 61, and mounting the groove portion 4 to the panel hole 61. And mounting process.

Specifically, in the first temporary mounting step, as shown in FIG. 5, the wire harness WH is inserted into the panel hole 61 from the engine room side, and the grommet 1 is arranged so that the convex portion 214 becomes the vehicle upper side Hu. To do.
Then, the grommet 1 is moved to the tip Xa side until the second side surface 123 of the recess 12 abuts the edge of the dash panel 60 that forms the panel hole 61. If it does so, it will be in the state which the bottom face 121 of the recessed part 120 of vehicle lower side Hd was mounted in the edge of the dash panel 60 which comprises the panel hole 61. FIG.

  As shown in FIG. 6, the second temporary mounting step is performed on the vehicle lower side until the protruding portion 220 on the vehicle lower side Hd is disposed closer to the vehicle interior side than the dash panel 60 around the concave portion 120 on the vehicle upper side Hu. The Hd recess 120 is rotated to the tip Xa side. At this time, the protrusion 220 on the vehicle lower side Hd is locked to the vehicle interior side edge of the dash panel 60 that forms the panel hole 61 so that the tip Xa side of the grommet 1 faces the vehicle upper side Hu.

  As shown in FIG. 7, the temporary mounting release step is performed by turning the concave portion 120 of the vehicle upper side Hu toward the front end Xa side around the protruding portion 220 of the vehicle lower side Hd locked in the panel hole 61. If it does so, all the ribs 210 will be arrange | positioned inside the panel hole 61, and it will become the aspect which the center of the panel hole 61 and the central axis Xl of the grommet 1 adjoin.

  As shown in FIG. 8, the mounting step is performed by pulling the grommet 1 from the vehicle interior side and mounting the groove 4 in the panel hole 61. At this time, the passage part 2 passes through the panel hole 61 and is disposed on the vehicle interior side.

  The grommet 1 configured and mounted as described above includes a flat bottom surface 121 along the axial direction X on the base end Xb side of the first slit 110, that is, on the base end Xb side of the first small diameter portion 10. As a result, it is possible to reliably suppress inadvertent rolling in the temporary mounting state.

  More specifically, since the flat bottom 121 is in point contact with the panel hole 61 provided in the dash panel 60 at two points in the temporary mounting state, the grommet 1 is inadvertently rolled due to the weight of the wire harness WH. It is possible to improve the mounting workability to the panel hole 61 by reliably suppressing this.

Moreover, since the grommet 1 is provided with the recessed part 120 which formed the outer surface into the concave shape, the mounting workability | operativity to the panel hole 61 can be improved reliably.
More specifically, since the recess 120 is configured by the planar bottom surface 121 along the axial direction X, the grommet 1 can be prevented from rolling inadvertently.

  Furthermore, even if an external force to the base end Xb that is in the pull-out direction acts on the grommet 1 due to the weight of the wire harness WH, the first side surface 122 of the recess 120 is caught by the dash panel 60 that forms the panel hole 61, The grommet 1 can be prevented from coming out of the panel hole 61.

  Accordingly, the stable temporary mounting state of the grommet 1 can be reliably maintained, and the grommet 1 can be prevented from rolling carelessly or the grommet 1 can be prevented from slipping out to the base end Xb side. It can certainly be improved.

  Moreover, since the recessed part 120 is formed ranging over the 1st small diameter part 10 and the 1st frustum part 20, while being able to guide the grommet 1 easily with respect to the panel hole 61, the grommet 1 in the stable state of the grommet 1 Can be temporarily installed.

More specifically, the second side surface 123 of the concave portion 120 is formed by forming the concave portion 120 straddling the first frustum portion 20 that gradually increases in diameter from the first small diameter portion 10 and the first small diameter portion 10. Since the diameter is larger than that of the first small-diameter portion 10, the concave portion 120 is formed in the panel hole 61 simply by abutting the second side surface 123 against the edge of the dash panel 60 forming the panel hole 61 in the first temporary mounting step. Can be guided.
Thereby, it can suppress that the grommet 1 of a temporary mounting state rolls carelessly.

Furthermore, the second side surface 123 of the recess 120 having a large diameter can prevent the grommet 1 from slipping out toward the base end Xb.
Therefore, the mounting workability of the grommet 1 can be further improved.

  In addition, the first small-diameter portion 10 of the grommet 1 includes the first slit 110 formed in a concave shape from the distal end Xa toward the proximal end Xb, and the recessed portion 120 is disposed in the vicinity of the proximal end Xb of the first slit 110. The grommet 1 can be prevented from being damaged.

  More specifically, the wire harness WH has a different wire harness diameter depending on specifications and the like, but the grommet 1 is provided with the first slit 110 so that the wire harness WH has a larger diameter than the inner diameter of the first small diameter portion 10. The first small-diameter portion 10 can be expanded and the wire harness WH can be inserted, and the wire harness WH having a diameter smaller than the inner diameter of the first small-diameter portion 10 can be inserted in close contact with the inserted wire harness WH. One small diameter portion 10 can be narrowed and fixed.

Furthermore, since the recess 120 is disposed in the vicinity of the base end Xb of the first slit 110, the recess 120 inserts the wire harness WH having a diameter larger than the inner diameter of the first small diameter portion 10 into the grommet 1 as described above. In this case, it is possible to prevent the grommet 1 from being damaged due to the base end Xb side of the first slit 110 being torn.
In addition, by providing the boundary protrusion part 124 along the 1st slit 110 in the recessed part 120, it can prevent reliably that the base end Xb side of the 1st slit 110 is torn and the grommet 1 is damaged.

  Furthermore, since the recess 120 can be prevented from being thinned when the recess 120 is formed at a position in the circumferential direction different from the first slit 110, the grommet 1 can be operated even if an insertion force is applied when the panel hole 61 is mounted. It can be prevented from being damaged.

  In addition, the first frustum portion 20 of the grommet 1 includes four ribs 210 arranged at equal intervals in the circumferential direction, and includes a protrusion 220 on the radially outer surface 211 of the rib 210 and two ribs 210. By arranging at the same position as the recess 120 in the circumferential direction, it is possible to more reliably prevent the grommet 1 from rolling carelessly or the grommet 1 from coming out of the panel hole 61.

More specifically, by arranging two of the four ribs 210 in the same recess 120 in the circumferential direction, the vehicle lower side Hd of the grommet 1 is placed in the panel hole 61 around the recess 120 of the vehicle upper side Hu. The projection 220 can be locked to the edge of the dash panel 60 that forms the panel hole 61 by further pushing into the panel.
Accordingly, the temporary mounting state can be more reliably held and the mounting workability can be improved while preventing the grommet 1 from rolling carelessly or coming out of the panel hole 61.

  Further, by setting the distance from the central axis X1 of the passage part 2 of the grommet 1 to the radially outer surface 203d of the rib 210 to about three-quarters of the radius of the panel hole 61, the grommet 1 is placed at the center of the panel hole 61. And the center axis Xl of the grommet 1 can be attached to the panel hole 61 by being pulled toward the tip Xa side.

More specifically, since the rib 210 is disposed on the base end Xb side with respect to the recess 120, the temporarily attached grommet 1 is attached to the panel hole 61 after passing the rib 210 and the groove portion 4 is attached. However, the grommet 1 can be pulled toward the tip Xa side in a state where the center of the panel hole 61 and the central axis Xl of the grommet 1 are close to each other.
Thereby, since it can mount | wear without the insertion force at the time of inserting in the panel hole 61 acting on the grommet 1 locally, it can prevent that the grommet 1 is damaged.

In correspondence between the configuration of the present invention and the above-described embodiment,
The mounting target location of this invention corresponds to the dash panel 60 of the embodiment,
Similarly,
The through hole corresponds to the panel hole 61,
The small diameter portion corresponds to the first small diameter portion 10 and the second small diameter portion 50,
The frustum portion corresponds to the first frustum portion 20 and the second frustum portion 40,
The slits correspond to the first slit 110 and the second slit 510,
The temporary mounting portion and the recess correspond to the recess 120,
The rolling suppression shape and the bottom surface correspond to the bottom surface 121,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

  For example, in the above description, in the second temporary mounting step, as shown in FIG. 6, the concave portion 120 on the vehicle upper side Hu is rotated about the concave portion 120 on the vehicle upper side Hu, but the wire X Depending on the length of the harness WH and the routing route, as shown in FIG. 9, the concave portion 120 on the vehicle upper side Hu may be rotated around the concave portion 120 on the vehicle lower side Hd and turned to the tip Xa side. At this time, the tip Xa side of the grommet 1 is directed to the vehicle lower side Hd.

  Further, in the above description, the distance from the central axis Xl to the radially outer surface 211 of the rib 210 is formed to be about three-quarters of the radius of the panel hole 61, but from the central axis Xl to the radially outer surface. May be set longer than about three quarters of the radius of the panel hole 61 or may be set shorter.

  Preferably, the distance from the central axis X1 to the outer surface of the diameter is set to be not less than 2/3 and not more than 4/5 of the radius of the panel hole 61, whereby the center of the panel hole 61 and the center of the grommet 1 can be obtained. The mounting operation can be performed in a state where the shaft X1 is close to the shaft X1, and the grommet 1 can be reliably prevented from being damaged.

  In the above description, the concave portion 120 for temporarily mounting the grommet 1 to the panel hole 61 is used as a temporary mounting portion for temporarily mounting the grommet 1 to the panel hole 61, in the vicinity of the base end Xb of the first slit 110. Although the outer surface of the small diameter portion 10 is formed in a concave shape, for example, it may be formed so as to protrude from the outer surface of the first small diameter portion 10 as a temporary mounting portion.

  In the above description, the bottom surface 121 of the recess 120 is formed in a planar shape parallel to the axial direction X. For example, the axial direction X is parallel to the vertical direction of the vehicle and the width direction orthogonal to the axial direction X. May be a bottom surface along the intersecting direction intersecting with the bottom surface, or may be a curved bottom surface formed in an arc shape having the same diameter as the panel hole 61. Similar effects can be achieved.

  In the above description, in the first temporary mounting step, the grommet 1 is arranged so that the convex portion 214 becomes the vehicle upper side Hu. For example, the convex portion 214 becomes the vehicle lower side Hd. The grommet 1 may be arranged on the first temporary mounting step.

In the above description, the grommet 1 may be used for the wire harness WH that penetrates various panels such as a door panel, for example, in addition to the wire harness WH that penetrates the dash panel 60.
Furthermore, in addition to the grommet 1 being made of rubber, it may be made of an elastomer, for example.

DESCRIPTION OF SYMBOLS 1 ... Grommet 2 ... Passing part 3 ... Non-passing part 4 ... Groove part 10 ... 1st small diameter part 110 ... 1st slit 120 ... Recessed part 121 ... Bottom 122 ... 1st side surface 123 ... 2nd side surface 124 ... Boundary protrusion 20 ... 1st 1 frustum portion 210... Rib 211... Outer side surface 212. Front end side surface 213. Tapered surface 214... Convex portion 220. 2 Small diameter part 510 ... 2nd slit 60 ... Dash panel 61 ... Panel hole WH ... Wire harness X ... Axial direction Xa ... Tip Xb ... Base end Xl ... Center axis Hu ... Vehicle upper side Hd ... Vehicle lower side

Claims (6)

A large-diameter portion larger than the through-hole of the mounting target location;
A small diameter portion having a smaller diameter than the through hole;
A truncated cone-shaped frustum portion disposed between the large diameter portion and the small diameter portion;
A cylindrical grommet disposed between the large-diameter portion and the frustum portion, and a groove-shaped groove portion having the same diameter as the through hole, and disposed along the axial direction,
The small-diameter portion and the frustum portion in the mounting state are set as passing portions to be mounted through the through hole,
A grommet provided with a temporary mounting portion having a rolling restraining shape that temporarily mounts the passage portion with respect to the through hole and suppresses rolling about the axial direction on the frustum portion side of the small diameter portion. The grommet according to claim 1, wherein the temporary mounting portion is configured by a flat flat surface along the axial direction. The grommet according to claim 1, wherein the temporary mounting portion is constituted by a concave portion in which an outer surface of the passage site is formed in a concave shape. The grommet as described in any one of Claim 1 to 3 which formed the said temporary mounting part ranging over the said small diameter part and the said frustum part. The small diameter portion is provided with a slit formed in a concave shape from the tip toward the frustum portion,
The grommet as described in any one of Claim 1 to 4 which has arrange | positioned the said temporary mounting part in the base end part of the said slit. The frustum portion is provided with a plurality of ribs that are smaller in diameter than the groove portion and project outward in the radial direction and arranged at predetermined intervals in the circumferential direction,
On the radially outer surface of the rib, it is formed along the circumferential direction, and includes a protruding portion protruding in the radial direction,
The grommet according to any one of claims 1 to 5, wherein at least one of the ribs is disposed on an opposite side of the temporary mounting portion in the circumferential direction.

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