JP7293075B2 - Grommet inners, grommets, and wire harnesses - Google Patents

Description

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

A conventional grommet applied to a wire harness or the like of a vehicle has, for example, a structure in which it is inserted and fitted into a vehicle panel from the outside of the vehicle panel. The grommet has, for example, a grommet outer made of a soft material such as synthetic rubber or elastomer, and a grommet inner made of a hard synthetic resin material. For example, Patent Literature 1 discloses a grommet including an inner member made of resin and an elastic grommet body.

Further, in Patent Document 2, an annular member mounted in an insertion hole of a wall plate includes a first tubular portion extending from the inner circumference of a first flange portion to cover the inner peripheral surface of the insertion hole; The inner peripheral side of the first flange portion is notched so as to be connected to the first locking projection that protrudes from the tip of the shaped portion and is fixed to the wall plate, and the tubular portion cutout portion formed in the circumferential direction of the first tubular portion. and a flange cutout exposing the wallboard below the first flange.

Further, in Patent Document 3, a grommet includes a grommet body and an inner member. and a locking piece extending from the other end of the peripheral wall toward the one end.

Further, in Patent Document 4, an annular peripheral wall part in which a parting part is formed in a part in the peripheral direction, a collar part provided so as to protrude from one end of the peripheral wall part to the outer peripheral side, and a ring part provided in the peripheral wall part , an inner body including a plurality of locking portions that can be locked to the peripheral edge portion of the mounting hole, and a diameter expanding member that is inserted into the dividing portion to open the dividing portion to expand the diameter of the inner body and maintain the expanded state. An inner member is disclosed that includes a portion.

JP 2015-198530 A JP 2015-42039 A JP 2017-7463 A JP 2017-158355 A

By the way, when fitting a grommet into a through hole provided in a vehicle panel, a worker performs fitting work by pushing the grommet in the fitting direction from the outside of the vehicle panel. However, the layout of the outside of the vehicle panel may not allow the grommet to be pushed in. Therefore, when trying to pull the grommet from the inside of the vehicle panel, the electric wire or the grommet inner is pulled. Since the electric wire is bundled together with a part of the grommet outer and wrapped with tape, the grommet outer may be deformed when the electric wire is pulled, and the electric wire may be displaced from the grommet outer.

SUMMARY OF THE INVENTION An object of the present invention is to provide a grommet inner, a grommet, and a wire harness that can improve workability in fitting a grommet with an inner to a vehicle panel.

In order to achieve the above object, a grommet inner according to the present invention has a wiring member inserted therein, and contacts one outer surface of both side surfaces of an object to be fixed so that the outer surface and the wiring member are in contact with each other. a ring-shaped mounting portion to which a grommet outer for water-stopping is mounted; A cylindrical fitting portion that fits into a through hole penetrating from the inner surface to the outer surface; and the tubular fitting portion is engaged with the fixed object by contacting the inner side surface of the fixed object in the fitted state in which the tubular fitting portion is fitted in the through hole. The cylindrical fitting portion includes an end surface formed in the circumferential direction at the end portion on the fitting direction side, and one or more projecting portions formed by projecting from the end surface in the fitting direction. and further comprising a band clamp that binds the wiring material and the projecting portion, the projecting portion having a fastening through hole through which the band clamp is inserted, and the fastening through hole The wiring member is fixed to the projecting portion by the inserted band clamp .

Further, in the above grommet inner, the projecting portion is formed corresponding to each of the locking portions.

Further, in the above grommet inner, the projecting portion has a rib formed on at least one of the outer surfaces when viewed from the fitting direction.

In order to achieve the above object, a grommet according to the present invention has a wiring member inserted therein and contacts one outer surface of both side surfaces of an object to be fixed so that the outer surface and the wiring member are in contact with each other. and a grommet inner to which the grommet outer is attached. a tubular fitting portion formed to protrude from the portion in the fitting direction and fit into a through-hole penetrating from the other inner side surface of both side surfaces of the fixed object to the outer side surface thereof; When viewed from the direction, a plurality of cylindrical fitting portions are formed at intervals in the circumferential direction of the cylindrical fitting portion, and in a fitting state in which the cylindrical fitting portion is fitted into the through hole, the inside of the fixing object is fixed. a locking portion that locks the cylindrical fitting portion to the fixed object by coming into contact with the side surface, and the cylindrical fitting portion is formed in the circumferential direction at the end portion on the fitting direction side. and one or more projecting portions projecting from the end surface in the fitting direction , the band clamp binding the wiring material and the projecting portion, the projecting portion is characterized in that it has a fastening through-hole through which the band clamp is inserted, and the wiring material is fixed to the projecting portion by the band clamp inserted through the fastening through-hole.

In order to achieve the above object, a wire harness according to the present invention includes a wiring member, and the wiring member is inserted through the inside thereof so as to make contact with one outer surface of both side surfaces of an object to be fixed. and a grommet having a grommet inner to which the grommet outer is attached, wherein the grommet inner is an annular attachment portion to which the grommet outer is attached. , formed to protrude in the fitting direction from the radially inner end portion of the annular mounting portion, and fitted into a through hole penetrating from the other inner side surface of both side surfaces of the fixed object to the outer side surface thereof. When viewed from the fitting direction, a plurality of tubular fitting portions are formed at intervals in the circumferential direction of the tubular fitting portion, and the tubular fitting portion is fitted into the through hole. a locking portion that locks the tubular fitting portion to the fixed object by coming into contact with the inner surface of the fixed object in the fitted state, wherein the tubular fitting portion It has an end face formed in the circumferential direction at the end on the mating direction side, and one or more protrusions formed by protruding from the end face in the mating direction, and the wiring member and the protrusion are separated from each other. A band clamp for binding is further provided, and the projecting portion has a fastening through hole through which the band clamp is inserted, and the band clamp inserted through the fastening through hole holds the wiring material to the projecting portion. It is characterized by being fixed .

ADVANTAGE OF THE INVENTION The grommet inner, grommet, and wire harness which concern on this invention are effective in the ability to improve the workability|operativity in the fitting operation|work of the grommet with an inner with respect to a vehicle panel.

FIG. 1 is a perspective view showing a schematic configuration of a grommet and a wire harness to which a grommet inner according to the first embodiment is applied. FIG. 2 is another perspective view showing a schematic configuration of a grommet and a wire harness to which the grommet inner according to the first embodiment is applied. FIG. 3 is an exploded perspective view showing a schematic configuration of a grommet to which the grommet inner according to the first embodiment is applied. FIG. 4 is a plan view of the grommet inner according to the first embodiment viewed from the fitting direction. FIG. 5 is a side view showing a schematic configuration of a grommet and a wire harness to which the grommet inner according to the first embodiment is applied. FIG. 6 is a perspective view showing a schematic configuration of a grommet and a wire harness to which the grommet inner according to the second embodiment is applied. FIG. 7 is a side view showing a schematic configuration of a grommet and a wire harness to which the grommet inner according to the second embodiment is applied.

EMBODIMENT OF THE INVENTION Below, embodiment of the grommet inner in this invention, a grommet, and a wire harness is described in detail with reference to drawings. In addition, this invention is not limited by the following embodiment. In addition, components in the following embodiments include components that can be easily replaced by those skilled in the art, or components that are substantially the same.

[First embodiment]
First, a grommet inner, a grommet, and a wire harness according to the first embodiment will be described with reference to FIGS. 1 to 5. FIG. FIG. 1 is a perspective view showing a schematic configuration of a grommet and a wire harness to which a grommet inner according to the first embodiment is applied. FIG. 2 is another perspective view showing a schematic configuration of a grommet and a wire harness to which the grommet inner according to the first embodiment is applied. FIG. 3 is an exploded perspective view showing a schematic configuration of a grommet to which the grommet inner according to the first embodiment is applied. FIG. 4 is a plan view of the grommet inner according to the first embodiment viewed from the fitting direction. FIG. 5 is a side view showing a schematic configuration of a grommet and a wire harness to which the grommet inner according to the first embodiment is applied. 1 to 5 (including FIGS. 6 and 7), wiring members and vehicle panels are indicated by two-dot chain lines.

1 to 5 (including FIGS. 6 and 7) is the axial direction of the grommet inner, grommet, and wire harness in each embodiment. It is the cable direction, and is the through-hole direction of the through-hole provided in the vehicle panel. In particular, of the axial directions, the direction from the outer surface to the inner surface of the vehicle panel is defined as the first direction, and the direction opposite to the first direction is defined as the second direction. This first direction corresponds to the fitting direction of the grommet 1 with respect to the vehicle panel. In addition, each direction used in the following description will be described as the direction when the grommet 1 is assembled to the vehicle panel 100 unless otherwise specified.

The grommet 1 is incorporated in a wire harness WH wired in a vehicle (not shown) such as an automobile. The wire harness WH is, for example, a bundle of a plurality of wiring materials W used for power supply and signal communication for connection between devices mounted on a vehicle. The material W is connected to each device. A wire harness WH shown in FIGS. 1 and 2 includes a wiring member W and a grommet 1 . The wire harness WH may further include various components such as a corrugated tube, a resin tape, an exterior member such as a protector, an electric connection box, and a fixture. The wiring material W is composed of, for example, a metal rod, an electric wire, a bundle of electric wires, or the like. The metal bar is a conductive bar-shaped member covered with an insulating coating. An electric wire is formed by covering the outside of a conductor portion (core wire) made of a plurality of conductive metal wires with a covering portion having insulating properties. A wire bundle is a bundle of wires. The wire harness WH, for example, bundles and collects a plurality of wiring materials W, and electrically connects various devices through connectors or the like provided at the ends of the bundled wiring materials W. FIG.

For example, the grommet 1 is inserted into the through hole 101 formed in the vehicle panel 100 when the wiring material W is routed across two spaces partitioned by the vehicle panel 100, which is a fixed object. The wiring material W is fixed to the vehicle panel 100 by inserting and fitting. The vehicle panel 100 is, for example, a metal plate that forms a vehicle body or the like. The through hole 101 is formed in a circular shape and penetrates the vehicle panel 100 along the through direction (thickness direction). The through hole 101 penetrates from one outer side surface 100a of both side surfaces of the vehicle panel 100 to the other inner side surface 100b (FIGS. 1, 2, and 5). The two spaces partitioned by the vehicle panel 100 are, for example, an interior space (cabin, etc.) and an exterior space (engine compartment, etc.). In addition, the grommet 1 is attached to the through-hole 101 in a state in which the wiring material W of the wire harness WH is inserted and is wrapped around the wiring material W, thereby protecting the wiring material W passing through the through-hole 101. At the same time, the through hole 101 is waterproofed. The grommet 1 has a function of waterproofing the through hole 101 as well as dustproofing, soundproofing, and the like. The grommet 1 has a grommet outer 2 through which the wiring member W is inserted, and a grommet inner 3A to which the grommet outer 2 is attached.

The grommet outer 2 contacts one outer side surface 100a of both side surfaces of the vehicle panel 100 to stop water between the outer side surface 100a and the wiring member W. As shown in FIG. The grommet outer 2 is made of a soft insulating material such as synthetic rubber, elastomer, ethylene propylene diene rubber (EPDM), or the like. The grommet outer 2 is composed of a large-diameter tubular portion 51 , a plurality of small-diameter tubular portions 52 , and a connecting portion 53 . The large-diameter tubular portion 51 is formed in a cylindrical shape and has a larger outer diameter than each of the small-diameter tubular portions 52 . The large-diameter cylindrical portion 51 is axially connected via a connecting portion 53 to two small-diameter cylindrical portions 52 arranged in a direction orthogonal to the axial direction. The large-diameter tubular portion 51 has an inner surface formed with a fitting groove into which the annular mounting portion 10 of the grommet inner 3A is fitted. A plurality of wiring members W are inserted through the large-diameter cylindrical portion 51 in a mounted state in which the grommet inner 3A is mounted on the grommet outer 2 . The small-diameter cylindrical portion 52 is formed in a substantially cylindrical shape, and each wiring member W is inserted through the inner side thereof in the attached state. The inner space of the small-diameter tubular portion 52 is formed in a columnar shape according to the cross-sectional shape of the wiring material W. As shown in FIG. The connecting portion 53 connects the end portion of the large-diameter tubular portion 51 on the second direction side in the axial direction and the end portion of each small-diameter tubular portion 52 on the first direction side in the axial direction.

The grommet inner 3A is made of, for example, an insulating hard synthetic resin material. The grommet inner 3A is attached from the first direction (fitting direction) side in the axial direction of the grommet outer 2 to constitute the grommet 1 (FIG. 3). The grommet inner 3</b>A includes an annular mounting portion 10 , a cylindrical fitting portion 20 , a locking portion 30 and a band clamp 40 .

The annular attachment portion 10 is formed in an annular shape and is a portion to which the grommet outer 2 is attached. The annular mounting portion 10 is formed to protrude radially outward from the second direction end portion of the cylindrical fitting portion 20 and extends in the circumferential direction. The annular mounting portion 10 is fitted into a fitting groove provided on the inner side surface of the grommet outer 2 in the mounted state.

The cylindrical fitting portion 20 is formed in a cylindrical shape, protrudes in the fitting direction from the radial inner end portion of the annular mounting portion 10 , and is a portion that fits into the through hole 101 . The cylindrical fitting portion 20 has an end face 21 formed in the circumferential direction at the end on the fitting direction side, and two protruding portions 22A formed so as to protrude from the end face 21 in the fitting direction. 22 A of protrusion parts are formed according to the wiring material W. FIG. The projecting portion 22A is arranged in the vicinity of, for example, adjacent to the locking portion 30 in the circumferential direction of the end face 21 (FIG. 4). The projecting portion 22A has ribs 23 and fastening through-holes 25 . Two ribs 23 are formed on the outer surface when viewed from the fitting direction. The ribs 23 of this embodiment are formed on the radially opposite surfaces of the outer surface of the projecting portion 22A. One of the two ribs 23 protrudes radially outward and the other protrudes radially inward. The fastening through hole 25 penetrates the projecting portion 22A along the circumferential direction of the cylindrical fitting portion 20 . The fastening through hole 25 is formed so that the band clamp 40 can be inserted therethrough. Openings at both circumferential ends of the fastening through-hole 25 are formed in the vicinity of the end surface 21 of the cylindrical fitting portion 20 . The protruding portion 22A in the present embodiment has a gripping margin for pulling the grommet 1 in the first direction, for example, in a half-fitted state before the cylindrical fitting portion 20 is inserted into the through hole 101 and is in a fitted state. function as

The locking portion 30 is a portion for locking the grommet 1 in the through hole 101 of the vehicle panel 100 . The engaging portion 30 engages the tubular fitting portion 20 with the vehicle panel 100 by coming into contact with the inner surface 100b of the vehicle panel 100 in the fitted state where the tubular fitting portion 20 is fitted into the through hole 101 . stop. A plurality of (for example, three) locking portions 30 are formed on the outer surface of the cylindrical fitting portion 20 at intervals in the circumferential direction when viewed from the fitting direction. The three locking portions 30 in this embodiment are formed on the outer surface of the cylindrical fitting portion 20 at regular intervals in the circumferential direction when viewed from the fitting direction. That is, it is formed so that the central angle of the central axis in the axial direction is approximately 120° (Fig. 4).

The band clamp 40 is an example of a fastening portion, and fastens the wiring material W and the projecting portion 22A. The band clamp 40 binds and fixes the wiring material W to the projecting portion 22A. The band clamp 40 is made of synthetic resin or the like. The band clamp 40 is formed in a strip shape, and has a plurality of locking teeth continuously formed on one side. A part on the other end side is passed through one end of the band clamp 40 to engage with arbitrary locking teeth to lock the band clamp 40 . The band clamp 40 binds and fixes the wiring material W to the projecting portion 22A while being inserted into the fastening through hole 25 provided in the projecting portion 22A.

Next, the flow of fitting operation of the grommet 1 into the through hole 101 in the first embodiment will be described.

First, the operator inserts the necessary wiring material W into the small-diameter tubular portions 52 of the grommet outer 2 and the tubular fitting portion 20 of the grommet inner 3A, and then pulls the wire from the outside of the vehicle panel 100. An external force is applied to the through hole 101 from the side surface 100a, and the cylindrical fitting portion 20 of the grommet inner 3A is inserted into the through hole 101 from the outer side surface 100a. At this time, when the locking portion 30 on the outer peripheral surface of the tubular fitting portion 20 advances toward the inner side surface 100b side, elastic deformation causes the locking portion 30 to move toward the inner side surface 100b side of the vehicle panel 100 toward the periphery of the through hole 101. 100 b of the vehicle panel 100 . In addition, the end portion (lip portion 51 a ) of the grommet outer 2 on the first direction side is elastically deformed radially outward by the reaction force received from the outer surface 100 a of the vehicle panel 100 , and the outer surface 100 a of the periphery of the through hole 101 is elastically deformed. They come into close contact with each other and seal the entire periphery of the through-hole 101 . As a result, the grommet 1 is mounted in the through hole 101 of the vehicle panel 100 by sandwiching the vehicle panel 100 between the locking portion 30 of the grommet inner 3A and the lip portion 51a of the grommet outer 2 . The grommet 1 is restrained from moving in the axial direction with respect to the vehicle panel 100 in a fitted state in which the tubular fitting portion 20 is fitted into the through hole 101 . Specifically, in the fitted state, the movement of the grommet 1 in the first direction is restricted by the locking portion 30 , and the end portion of the large-diameter cylindrical portion 51 of the grommet outer 2 on the first direction side moves the grommet 1 in the first direction. Movement in two directions is restricted.

In the grommet inner 3A, the cylindrical fitting portion 20 has an end face 21 formed in the circumferential direction at the end on the fitting direction side, and a protruding portion 22A formed by protruding from the end face 21 in the fitting direction. For example, in a fitting operation for fitting the grommet 1 with the inner to the vehicle panel 100, the locking portion 30 is positioned in the through hole 101, and the cylindrical fitting portion 20 cannot be locked to the vehicle panel 100. When the grommet inner 3A is not installed, the operator pulls the protruding portion 22A of the grommet inner 3A in the fitting direction, so that the locking portion 30 can be brought into contact with the inner surface 100b of the vehicle panel 100 . As a result, since the electric wire is not pulled in the fitting direction during the conventional fitting work, the fitting work can be performed without the wiring material W being deviated from the grommet 1, for example.

As described above, the grommet inner 3A, the grommet 1, and the wire harness WH in the first embodiment are provided with a tubular fitting portion that fits into the through hole 101 of the vehicle panel 100, and the tubular fitting portion 20 is , an end face 21 formed in the circumferential direction at the end on the fitting direction side, and a protruding portion 22A formed so as to protrude from the end face 21 in the fitting direction. As a result, for example, in a fitting operation for fitting the grommet 1 to the vehicle panel 100 , the locking portion 30 is positioned within the through hole 101 and the cylindrical fitting portion 20 cannot be locked to the vehicle panel 100 . In the semi-locked state, the worker can pull the projecting portion 22A of the grommet inner 3A in the fitting direction to bring the locking portion 30 into contact with the inner side surface 100b of the vehicle panel 100 . As a result, it is no longer necessary to pull the wiring material W in the fitting direction during the fitting work, and workability in the fitting work can be improved.

Moreover, the grommet inner 3A, the grommet 1, and the wire harness WH in the first embodiment have ribs 23 formed on the outer surface of the projecting portion 22A when viewed from the fitting direction. As a result, when an operator pulls the protruding portion 22A of the grommet inner 3A in the fitting direction, the rib 23 is caught by the finger of the operator, thereby increasing the frictional force and easily pulling the protruding portion 22A. becomes possible. As a result, workability can be improved more than the conventional fitting work.

In the grommet inner 3A, the grommet 1, and the wire harness WH in the first embodiment, the wiring material W is fixed to the projecting portion 22A by the band clamp 40. As shown in FIG. The projecting portion 22A has a fastening through hole 25 through which a band clamp 40 is inserted, and the band clamp 40 inserted through the fastening through hole 25 fixes the wiring member W to the projecting portion 22A. As a result, in the semi-locked state during the fitting operation, the worker can pull the wiring member W in the fitting direction to bring the locking portion 30 into contact with the inner surface 100b of the vehicle panel 100. It becomes possible. That is, since the wiring material W is fixed to the grommet inner 3A, the wiring material W is less likely to slip off the grommet outer 2 even if the operator pulls the wiring material W in the fitting direction. As a result, workability in fitting work can be improved.

In the grommet inner 3A, the grommet 1, and the wire harness WH in the first embodiment, the projecting portion 22A is formed in accordance with the wiring material W and arranged near the locking portion 30. As shown in FIG. As a result, when an operator pulls the protruding portion 22A (or the wiring material W) of the grommet inner 3A in the fitting direction, the tensile force is easily transmitted to the locking portion 30 near the protruding portion 22A. The portion 30 can be easily locked.

Although the grommet inner 3A, the grommet 1, and the wire harness WH have the band clamp 40 in the first embodiment, the present invention is not limited to this, and the band clamp 40 may be omitted. In other words, even if the wiring material W is not fixed to the projecting portion 22A by the band clamp 40, the locking portion 30 can be secured to the vehicle panel 100 by pulling the projecting portion 22A of the grommet inner 3A in the fitting direction. can be brought into contact with the inner surface 100b of the , and the above-described effects can be obtained.

Further, in the first embodiment, the grommet inner 3A, the grommet 1, and the wire harness WH have the ribs 23 on the projecting portions 22A, but the ribs 23 are not limited to this and may be omitted. Moreover, although the ribs 23 are formed on the surfaces facing each other in the radial direction among the outer surfaces of the projecting portion 22A, the ribs 23 may be formed on the surfaces facing each other in the circumferential direction. It may be formed on one of the surfaces, or may be formed on one of the circumferentially opposed surfaces. Moreover, although one rib 23 is formed along the axial direction of the outer surface of the projecting portion 22A, it is not limited to this, and a plurality of ribs 23 may be formed.

[Second embodiment]
Next, a grommet inner, a grommet, and a wire harness according to the second embodiment will be described with reference to FIGS. 6 and 7. FIG. FIG. 6 is a perspective view showing a schematic configuration of a grommet and a wire harness to which the grommet inner according to the second embodiment is applied. FIG. 7 is a side view showing a schematic configuration of a grommet and a wire harness to which the grommet inner according to the second embodiment is applied.

In the grommet inner 3B, the grommet 1, and the wire harness WH in the second embodiment, the length (height) L2 of the protruding portion 22B in the cylindrical fitting portion 20 in the first direction (fitting direction) is equal to that of the protruding portion 22A. It differs from the first embodiment in that it is shorter than the length L1 in the first direction. In the following, the same reference numerals are given to the same constituent elements as in the first embodiment, and redundant descriptions of common configurations, actions, and effects are omitted as much as possible.

In the grommet inner 3B, the cylindrical fitting portion 20 has two projecting portions 22B. The protrusion 22B is formed to protrude from the end face 21 in the fitting direction and has a length L2 in the first direction. The length L2 of the projecting portion 22B in the first direction has a relationship of L2<L1 with respect to the length L1 of the projecting portion 22A in the first direction. Unlike the projecting portion 22A, each projecting portion 22B of the present embodiment does not have a rib 23 formed on the outer surface when viewed from the fitting direction, but has a fastening through hole 25. As shown in FIG.

As described above, in the grommet inner 3B, the grommet 1, and the wire harness WH in the second embodiment, the projecting portion 22B has the fastening through hole 25 through which the band clamp 40 is inserted. The wiring material W is fixed to the projecting portion 22B by a band clamp 40 inserted through the through-hole 25 for fastening. As a result, in the semi-locked state during the fitting operation, the worker can pull the wiring member W in the fitting direction to bring the locking portion 30 into contact with the inner surface 100b of the vehicle panel 100. It becomes possible. That is, since the wiring material W is fixed to the grommet inner 3B, the wiring material W is less likely to slip off the grommet outer 2 even if the operator pulls the wiring material W in the fitting direction. As a result, workability in fitting work can be improved.

In addition, in the first and second embodiments, each of the protrusions 22A and 22B is formed in accordance with the wiring material W, but is not limited to this. It may be formed correspondingly. By forming the protruding portions 22A and 22B corresponding to the locking portions 30, the operator can direct the protruding portions 22A and 22B (or the wiring member W) of the grommet inners 3A and 3B (or the wiring member W) in the fitting direction. When it is pulled, the tensile force is easily transmitted to the locking portions 30 in the vicinity of the projecting portions 22A and 22B, and the locking portions 30 are easily locked.

Moreover, in the first and second embodiments, the through hole 101 is formed in a circular shape. In this case, the tubular fitting portion 20 may be formed in an elliptical tubular shape or an elongated tubular shape in accordance with the shape of the through hole 101 .

In addition, in the first and second embodiments, the grommet outer 2 has the large-diameter cylindrical portion 51 formed in a cylindrical shape, but is not limited to this, and may be an elliptical cylindrical shape or a long-hole cylindrical shape. It may be in shape. Further, since the inner space of the small-diameter tubular portion 52 is formed in accordance with the cross-sectional shape of the wiring material W, the inner space may be, for example, an elliptical cylinder.

In addition, in the first and second embodiments, the annular mounting portion 10 is formed in an annular shape in accordance with the inner surface of the large-diameter cylindrical portion 51 of the grommet outer 2, but is limited to this. Instead, it may have an elliptical shape or an elongated hole shape.
In addition, the cylindrical fitting part

1 Grommet 2 Grommet Outer 3A, 3B Grommet Inner 10 Annular Mounting Part 20 Cylindrical Fitting Part 21 End Face 22A, 22B Protruding Part 23 Rib 25 Fastening Through Hole 30 Locking Part 40 Band Clamp 51 Large Diameter Cylindrical Part 52 Small Diameter Cylinder Shaped part 53 Connecting part 100 Vehicle panel 100a Outer surface 100b Inner surface 101 Through hole W Wiring member WH Wire harness

Claims (5)

a ring-shaped mounting portion in which a wiring member is inserted and a grommet outer that contacts one of the two side surfaces of the fixed object to stop water between the outer surface and the wiring member is attached; ,
It is formed so as to protrude in the fitting direction from a radially inner end portion of the annular mounting portion, and is fitted into a through hole penetrating from the other inner side surface of both side surfaces of the fixed object to the outer side surface. a tubular fitting;
When viewed from the fitting direction, a plurality of fixed objects are formed at intervals in the circumferential direction of the tubular fitting portion, and in a fitting state in which the tubular fitting portion is fitted into the through hole. a locking portion that locks the cylindrical fitting portion to the fixed object by coming into contact with the inner surface of the object;
The cylindrical fitting portion is
an end face formed in the circumferential direction at the end on the fitting direction side;
and one or more projecting portions formed projecting from the end surface in the fitting direction ,
further comprising a band clamp that binds the wiring material and the protrusion,
The protruding portion has a fastening through-hole through which the band clamp is inserted, and the wiring material is fixed to the protruding portion by the band clamp inserted through the fastening through-hole.
A grommet inner characterized by: The protrusion is
The grommet inner according to claim 1, formed corresponding to each of the locking portions. The protrusion is
The grommet inner according to claim 1 or 2, further comprising a rib formed on at least one of the outer surfaces when viewed from the fitting direction. a grommet outer through which a wiring member is inserted and which contacts one of the two side surfaces of an object to be fixed to stop water between the outer surface and the wiring member;
a grommet inner to which the grommet outer is attached,
The grommet inner is
an annular mounting portion to which the grommet outer is mounted;
It is formed so as to protrude in the fitting direction from a radially inner end portion of the annular mounting portion, and is fitted into a through hole penetrating from the other inner side surface of both side surfaces of the fixed object to the outer side surface. a tubular fitting;
When viewed from the fitting direction, a plurality of fixed objects are formed at intervals in the circumferential direction of the tubular fitting portion, and in a fitting state in which the tubular fitting portion is fitted into the through hole. a locking portion that locks the cylindrical fitting portion to the fixed object by coming into contact with the inner surface of the object;
The cylindrical fitting portion is
an end face formed in the circumferential direction at the end on the fitting direction side;
and one or more projecting portions formed projecting from the end surface in the fitting direction ,
further comprising a band clamp that binds the wiring material and the protrusion,
The protruding portion has a fastening through-hole through which the band clamp is inserted, and the wiring material is fixed to the protruding portion by the band clamp inserted through the fastening through-hole.
A grommet characterized by: wiring material;
a grommet outer, through which the wiring material is inserted, which contacts one outer side surface of both side surfaces of an object to be fixed to stop water between the outer side surface and the wiring material, and the grommet outer. a grommet having a grommet inner to be attached,
The grommet inner is
an annular mounting portion to which the grommet outer is mounted;
It is formed so as to protrude in the fitting direction from a radially inner end portion of the annular mounting portion, and is fitted into a through hole penetrating from the other inner side surface of both side surfaces of the fixed object to the outer side surface. a tubular fitting;
When viewed from the fitting direction, a plurality of fixed objects are formed at intervals in the circumferential direction of the tubular fitting portion, and in a fitting state in which the tubular fitting portion is fitted into the through hole. a locking portion that locks the cylindrical fitting portion to the fixed object by coming into contact with the inner surface of the object;
The cylindrical fitting portion is
an end face formed in the circumferential direction at the end on the fitting direction side;
and one or more projecting portions formed projecting from the end surface in the fitting direction ,
further comprising a band clamp that binds the wiring material and the protrusion,
The protruding portion has a fastening through-hole through which the band clamp is inserted, and the wiring material is fixed to the protruding portion by the band clamp inserted through the fastening through-hole.
A wire harness characterized by:

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