JP5539087B2 - Grommet for wire harness - Google Patents

Description

  The present invention relates to a grommet that shields a space between a through hole of a panel and a wire harness that passes through the through hole.

  Conventionally, in order to attach the wire harness assembled with the grommet to the through hole of the vehicle panel, an operation procedure as shown in FIG. 8 or FIG. 9 is performed. In addition, the division | segmentation of the work of FIG.8 and FIG.9 is according to the specification of a vehicle.

  In the work shown in FIG. 8, first, a small-diameter portion through which the wire harness W1 passes through the through hole 105 of the panel (body panel or the like) 100 from the front side of the figure through the back side of the figure of the wire harness W1. 201 and a grommet 200 made of rubber having a large diameter portion 203 formed to have a large diameter to fit into the through-hole 105 of the panel 100 through a portion that gradually expands in a funnel shape. While pushing down into the through hole 105 of the panel 100 from the near side to the far side, pulling the near side of the wire harness W1 in the figure to the near side and using the inclined surface of the funnel-shaped part of the grommet 200 However, the outer periphery fitting groove 204 of the large-diameter portion 203 of the grommet 200 is fitted into the peripheral edge portion of the through hole 105 of the panel 100 to complete the attachment of the grommet 200.

  9, first, the front side of the wire harness W1 in the figure is passed through the through hole 105 of the panel 100 from the back side to the front side of the figure, and the grommet 200 is passed through the through hole 105 together. While holding the portion, the outer periphery fitting groove 204 of the large-diameter portion 203 of the grommet 200 is pushed into the peripheral edge portion of the through hole 105 of the panel 100 to complete the attachment of the grommet 200.

  Conventionally, from the relationship of using a wire harness that is continuous from one side of the panel 100 to the other side, one of the above-mentioned two types of grommet mounting procedures had to be carried out. However, since the grommet 200 must be mounted while the grommet 200 is being crushed, it is a powerful operation, which is troublesome and troublesome, and may be difficult to mount. In addition, since there are many work processes, there is a problem that the assemblability is poor.

  Therefore, the grommet is composed of a grommet outer made of a soft material such as rubber or elastomer, and a grommet inner made of a hard material fixed to the inner peripheral portion thereof, and the grommet inner made of a hard material is formed at the periphery of the through hole of the panel. A grommet having a two-part configuration has been developed in which the seal lip of the grommet outer is brought into close contact with the panel without being particularly crushed or greatly deformed by being locked to a part or the like.

  Two parts, each of which is a combination of an inner made of hard resin and an outer made of soft material, are prepared, and the two parts are mounted from both sides of the panel, and the inner parts of the two parts are connected to each other through the panel through-hole. There is one in which one grommet is configured by connecting each other through (see, for example, Patent Document 1).

FIG. 10 shows a structure in which the grommet described in Patent Document 1 is mounted on a panel.
This grommet is a grommet that is attached to the through-hole 105 of the panel 100 that partitions the outside of the vehicle and the inside of the vehicle and through which the wire harnesses W1 and W2 pass, and includes an outdoor grommet 310 and an indoor grommet 360.

  Each of the outdoor grommets 310 and the indoor grommets 360 includes grommet outers 311 and 361 made of soft resin such as rubber and elastomer, and grommet inners 320 and 370 made of hard resin.

  The grommet inner 320 of the outdoor grommet 310 has a cylindrical portion 321 whose tip is inserted and fitted into the through hole 105 of the panel 100, and a flange portion 322 protruding from the outer periphery of the cylindrical portion 321. A first lock portion 323 is provided at the distal end of the portion 321 to be engaged with the periphery of the through hole 105 when the cylindrical portion 321 is inserted into the through hole 105 of the panel 100. A second lock portion 324 that engages with the grommet inner 370 of the grommet 360 for use is provided.

  Further, the grommet outer 311 of the outdoor grommet 310 includes a large-diameter annular panel seal portion 312 attached to the flange portion 322 of the grommet inner 320, and a wire harness W penetrating therein, and the wire harness W penetrating therethrough. A small-diameter cylindrical wire harness seal portion 313 that seals between the panels, and when the grommet inner 320 is attached to the panel seal portion 312 in the through hole 105 of the panel 100, the plate surface on the outdoor side of the panel 100 A seal lip 314 is provided to be pressed and adhered.

  Further, the grommet inner 370 of the indoor grommet 360 includes a cylindrical portion 372 that fits to the outer periphery of the cylindrical portion 321 of the grommet inner 320 of the outdoor grommet 310, and a flange portion provided at the base end portion of the cylindrical portion 372. When the cylindrical portion 372 is fitted to the outer periphery of the cylindrical portion 321 of the grommet inner 320 of the outdoor grommet 310, the second locking portion of the outdoor grommet 310 is provided on the cylindrical portion 372. A lock portion 374 that engages with 324 is provided.

  The grommet outer 361 of the indoor grommet 360 seals between the large-diameter portion 362 attached to the flange portion 371 of the grommet inner 370 and the wire harness W penetrating through the wire harness W. A small-diameter cylindrical wire harness seal portion 363. When the grommet inner 370 is engaged with the grommet inner 320 of the outdoor grommet 310 in the large-diameter portion 362, A seal lip 364 that is pressed and adhered is provided.

  Further, inside the grommet inner 320 of the outdoor grommet 310 and the grommet inner 370 of the indoor grommet 360, the connector 328 attached to the terminal of the outdoor wire harness W1 and the terminal of the indoor wire harness W2 are attached. Connector 378 is disposed, and by fitting these connectors 328 and 378 to each other, the wire harness composed of the outdoor-side wire harness W1 and the indoor-side wire harness W2 becomes a through-hole of the panel 100. 105 is routed through.

  In this grommet, the outdoor grommet 310 is attached to the through hole 105 from the outdoor side of the panel 100, and the indoor grommet 360 is coupled from the indoor side of the panel 100 to the grommet inner 320 of the outdoor grommet 310 previously attached. By doing so, the panel 100 can be mounted.

Japanese Patent Laid-Open No. 9-37442

  By the way, the conventional grommet shown in FIG. 10 does not require the troublesome force work of mounting the soft material portion in the through hole of the panel while forcibly deforming the soft material portion, but the soft seal lips 314 and 364 are attached to the panel 100. Since the soundproofing material is attached to one surface of the panel 100 and it is necessary to press down the soundproofing material, the pressing state may become unstable. It was.

  Further, the first lock portion 323 of the grommet inner 320 of the outdoor grommet 310 is engaged with the peripheral edge of the through hole 105 of the panel 100, so that the grommet is fixed to the panel 100, but the wire harness W1. , When a force in the lateral direction (for example, a direction perpendicular to the direction in which the wire harness extends) is applied to W2, and an excessive force is applied to the first lock portion 323, the first lock portion 323 may be disengaged. As a result, the fixing of the grommet may become unstable.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to stably and reliably press down the soundproofing material when the soundproofing material is disposed on one plate surface of the panel. An object of the present invention is to provide a grommet that can be attached and can always be kept stable.

In order to achieve the above-described object, the grommet according to the present invention is characterized by the following (1) and (2).
(1) In a grommet that shields a space between a through hole of a panel in which a soundproof material is arranged on one plate surface and a wire harness that passes through the through hole,
An annular soundproofing material presser that is attached to the through hole of the panel from the side where the soundproofing material is disposed, and a grommet body that is attached to the throughhole of the panel from the side opposite to the side where the soundproofing material is disposed, With
The soundproof material holder includes an annular soundproof material holder inner made of hard resin that is mounted and fixed in the through hole of the panel, and an annular soundproof material holder outer made of a soft material fixed integrally to the soundproof material holder inner. Consists of
The soundproof material pressing inner is provided in a first cylindrical portion inserted into the through-hole of the panel and a distal end of a peripheral wall of the first cylindrical portion so as to be able to bend radially inward, and the distal end of the first cylindrical portion And a first lock portion that elastically locks to the periphery of the through-hole when inserted into the through-hole of the panel,
The soundproof material pressing outer has a first flange portion that presses and adheres to the plate surface of the soundproofing material when the soundproof material pressing inner is mounted and fixed to the panel.
On the other hand, the grommet main body is made of a hard material annular grommet inner that is connected to the soundproof material pressing inner when inserted into the through hole of the panel, and a soft material integrally fixed to the grommet inner. Grommet outer,
The grommet inner is inserted and fitted into the inner periphery of the first cylindrical portion of the soundproof material pressing inner, thereby the second cylindrical portion that restricts the inward bending of the first lock portion, and the second A second lock portion that is provided at a distal end of the peripheral wall of the cylindrical portion, and is engaged with the soundproof material pressing inner when the second cylindrical portion is inserted and fitted into the first cylindrical portion of the soundproof material pressing inner; A second flange portion facing the other plate surface of the panel when the second lock portion is locked to the soundproof material pressing inner,
The grommet outer is disposed on the second flange portion, and when the second flange portion faces the other plate surface of the panel, the grommet outer is pressed and adhered to the plate surface around the through-hole of the panel. A small-diameter cylindrical shape that is provided on the inner peripheral side of the second cylindrical portion of the grommet inner and seals between the penetrated wire harness and the annular harness. A wire harness seal portion and a partition wall portion connecting the panel seal portion and the wire harness seal portion.
(2) In the grommet configured as described in (1) above,
The said grommet outer is equipped with the auxiliary | assistant sound insulation wall which defines an air layer between the said partition parts.

According to the grommet having the configuration (1), the soundproof material holder and the grommet body are assembled from both sides of the panel, and the soundproof material holder and the grommet body are connected to each other through the through-hole of the panel. Therefore, a troublesome force work such as attaching to the through-hole of the panel while forcibly deforming it as in the conventional grommet is unnecessary, and assembly to the panel can be facilitated. In addition, since the soundproof material holder and the grommet body are connected by locking the hard resin-made grommet inner to the hard resin soundproof material holder inner, a strong connection state can be maintained.
In addition, since the soundproofing material disposed on one plate surface of the panel is pressed by the flange portion of the soundproofing material pressing outer, the soundproofing material can be pressed down more reliably than when the soundproofing material is pressed by a soft lip. Moreover, since the part which contacts a soundproof material is a soft material part (soundproof material pressing outer), it can be made to follow the shape of a soundproof material. Further, since the panel seal portion of the grommet outer disposed on the second flange portion of the grommet inner is pressed and brought into close contact with the panel, it can be strongly pressed and a reliable sealing effect can be obtained.
Further, since the first cylindrical portion on the soundproof material pressing inner side and the second cylindrical portion on the grommet inner side are fitted to each other on the inner peripheral side of the through hole of the panel, the fitting portion with respect to the through hole of the panel has a double structure Accordingly, the mounting strength of the grommet to the panel is increased, and the mounting stability is improved. In addition, since the mounting stability is improved, the first flange portion of the soundproof material pressing outer and the panel seal portion of the grommet main body can be stably and surely brought into contact with the soundproof material and the panel.
Further, the soundproof material pressing inner is attached to the through hole of the panel, and then the second cylindrical portion of the grommet inner is inserted and fitted into the inner periphery of the first cylindrical portion of the soundproofing material press. Since the first lock portion can be restricted by the second cylindrical portion of the grommet inner, it is possible to prevent the soundproof material presser from coming off.
In addition, before attaching the grommet body attached to the outer periphery of the wire harness to the through hole of the panel, by attaching the soundproof material holder to the through hole of the panel, the wire harness to be inserted into the through hole of the panel later can be attached. Since it can protect from the edge of the through-hole of the panel, there is no worry of damaging the wire harness when attaching the grommet.
According to the grommet having the configuration (2), the grommet outer constituting the grommet body is provided with the partition wall and the auxiliary sound insulation wall, and an air layer is secured between the double walls (the partition wall and the auxiliary sound insulation wall). Therefore, the sound insulation effect can be enhanced.

  According to the present invention, it is possible to easily assemble the panel without requiring troublesome force work, and to suppress the soundproof material stably and surely, and to improve the mounting stability by increasing the mounting strength to the panel. can do. As a result, stable shielding performance can be exhibited.

  The present invention has been briefly described above. Further, details of the present invention will be further clarified by reading through the modes for carrying out the invention described below with reference to the accompanying drawings.

It is an external appearance perspective view which shows the structure of the grommet of one Embodiment of this invention. It is a perspective view which shows the state which is going to mount | wear the through-hole of a panel with the soundproof material holding | suppressing material of the grommet. It is a perspective view which shows the state which is going to install the grommet main body of the same grommet to the soundproof material holder previously attached. It is the perspective view which looked at the same state as Drawing 3 from another angle. It is a perspective view which shows the state which mounted | wore the panel with the same grommet seeing from the side in which the soundproof material is arrange | positioned. It is a front view which shows the same state as FIG. 5 seeing from the side in which the soundproof material is arrange | positioned. It is VII-VII arrow sectional drawing of FIG. It is explanatory drawing of the installation procedure of the conventional grommet. It is explanatory drawing of another mounting procedure of the conventional grommet. It is sectional drawing of another conventional grommet.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view showing a configuration of a grommet according to an embodiment of the present invention, FIG. 2 is a perspective view showing a state in which the soundproof material holder of the grommet is about to be installed in a through-hole of a panel, and FIG. FIG. 4 is a perspective view showing a state in which the grommet body is about to be attached to the soundproof material holder that has been previously attached, FIG. 4 is a perspective view showing the same state as FIG. 3 from another angle, and FIG. 5 is a view in which the grommet is attached to the panel FIG. 6 is a front view showing the same state as FIG. 5 viewed from the side where the soundproofing material is disposed, and FIG. 6 is a cross-sectional view taken along arrow VII-VII in FIG.

  This grommet is for shielding the space between the through hole 2 of the panel 1 in which the soundproof material 4 is arranged on one plate surface and the wire harness W inserted through the through hole 2. An annular soundproof material holder 60 mounted on the through hole 2 of the panel 1 from the side where the soundproofing member 4 is disposed, and a grommet body 10 mounted on the throughhole 2 of the panel 1 from the side opposite to the side where the soundproofing material 4 is disposed. It consists of.

  An annular upright wall 3 is formed at the periphery of the through hole 2 of the panel 1 so as to protrude to the side opposite to the side where the soundproofing material 4 is disposed. The soundproof material 4 is disposed around the through hole 2 leaving an exposed panel panel surface area having a predetermined width, and the soundproof material 4 is formed with a circular opening 5 concentric with the through hole 2. ing.

  The soundproof material holder 60 includes an annular soundproof material holder inner 70 made of hard resin that is mounted and fixed in the through hole 2 of the panel 1, and a soft material (rubber, elastomer, etc.) fixed integrally to the soundproof material holder inner 70. It consists of an annular soundproof material pressing outer 61 made of steel. The grommet main body 10 includes an annular grommet inner 20 made of a hard material that is connected to the soundproof material pressing inner 70 when inserted into the through-hole 2 of the panel 1, and a soft material integrally fixed to the grommet inner 20. It consists of the grommet outer 11 made from.

  Here, the soundproof material pressing inner 70 and the soundproof material pressing outer 61 may be integrally formed as an insert-molded product, or may be separately formed and combined later. The same applies to the grommet inner 20 and the grommet outer 11.

  The soundproof material pressing inner 70 is provided in a cylindrical portion 72 (first cylindrical portion) to be inserted into the through hole 2 of the panel 1 and a distal end of a peripheral wall of the cylindrical portion 72 so as to be bent radially inwardly. When the front end of 72 is inserted into the through hole 2 of the panel 1, a lock claw 74 (first lock portion) that elastically locks to the front end of the standing wall 3 at the periphery of the through hole 2, and the base of the cylindrical portion 72 It has a flange portion 71 formed outward on the end side. A portion on the inner peripheral side of the flange portion 71 is a locking wall 73 for locking a lock claw 24 on the grommet inner 20 side described later.

  The soundproof material pressing outer 61 formed in an annular shape has an inner peripheral portion fixed to the flange portion 71 of the soundproof material pressing inner 70, a cylindrical wall 63 extending from the inner peripheral portion, and a tip of the cylindrical wall 63. And a flange portion 62 (first flange portion) that presses and adheres to the plate surface of the soundproof material 4 when the soundproof material pressing inner 70 is mounted and fixed to the panel 1.

  On the other hand, the grommet inner 20 is inserted and fitted into the inner periphery of the cylindrical portion 72 (first cylindrical portion) of the soundproof material pressing inner 70, thereby bending the lock claw 74 (first lock portion) inward. When the cylindrical portion 22 (second cylindrical portion) to be regulated and the cylindrical portion 22 of the grommet inner 20 are inserted and fitted into the cylindrical portion 72 of the soundproof material pressing inner 70 provided at the tip of the peripheral wall of the cylindrical portion 22. The lock claw 24 (second lock portion) that is locked to the locking wall 73 of the soundproof material pressing inner 70 and the panel 1 when the lock claw 24 is locked to the locking wall 73 of the soundproof material pressing inner 70. It has a flange portion 21 (second flange portion) that faces the other plate surface (the plate surface on which the soundproofing material 4 is not disposed), and a tapered portion 23 that extends to the tip of the cylindrical portion 72. ing.

  The grommet outer 11 is disposed on the flange portion 21 of the grommet inner 20, and when the flange portion 21 faces the other plate surface of the panel 1, the grommet outer 11 is pressed and adhered to the plate surface around the through hole 2 of the panel 1. An annular panel seal portion 12 that seals between the panel 1 and the inner peripheral side of the cylindrical portion 22 of the grommet inner 20, and the wire harness W is penetrated therein, and the penetrated wire harness W and A small-diameter cylindrical wire harness seal portion 13 that seals between the partition wall portion 15 that connects the panel seal portion 12 and the wire harness seal portion 13, and a partition wall that defines an air layer between the partition wall portions 15 The auxiliary sound insulation wall 16 disposed on the front side of the portion 15 (the side on which the soundproof material 4 is disposed) and the wire harness W formed around the inner periphery of the auxiliary sound insulation wall 16 Integrally has a cylindrical wall 14 which surrounds with. In addition, the annular convex part 17 for improving the adhesiveness with respect to the panel 1 is provided in the surface which faces the panel 1 of the panel seal | sticker part 12 in the outer peripheral and the inner periphery in several steps.

  When the grommet having the above configuration is attached to the panel 1, first, as shown in FIGS. 2 and 7, the soundproof material holder 60 is attached to the through hole 2 of the panel 1 from the side where the soundproof material 4 is attached. . That is, the distal end of the cylindrical portion 72 of the soundproof material pressing inner 70 is inserted into the through hole 2, and the lock claw 74 at the distal end of the cylindrical portion 72 is locked to the distal end edge of the standing wall 3 provided at the periphery of the through hole 2. . Thereby, the mounting of the soundproof material presser 60 is completed, and the flange portion 62 of the soundproof material presser outer 61 presses the soundproof material 4 against the panel 1.

  Next, as shown in FIGS. 3, 4, and 7, the grommet body 10 in a state where the wire harness W is inserted through the wire harness seal portion 13 is placed on the panel 1 from the side opposite to the side on which the soundproofing material 4 is attached. It attaches to the through-hole 2 of this. That is, while the one side of the wire harness W is inserted into the through hole 2 of the panel 1, the tip of the cylindrical portion 22 of the grommet inner 20 is placed on the inner periphery of the cylindrical portion 72 of the soundproof material pressing inner 70 that is previously attached. The locking claw 24 at the tip of the cylindrical portion 22 is engaged with the locking wall 73 of the soundproof material pressing inner 70 by inserting and fitting. Thereby, the grommet main body 10 is attached to the panel 1, and the panel seal portion 12 of the grommet outer 11 is pressed and adhered to the panel 1, and the attachment of the grommet to the panel 1 is completed.

  As described above, this grommet is assembled by attaching the soundproof material holder 60 and the grommet body 10 from both sides of the panel 1 and connecting the soundproof material holder 60 and the grommet body 10 to each other through the through hole 2 of the panel 1. Can be attached to. Therefore, a troublesome force work such as mounting in the through hole 2 of the panel 1 while forcibly deforming as in the conventional grommet is unnecessary, and the assembly to the panel 1 becomes easy.

  Moreover, since the soundproof material holder 60 and the grommet main body 10 are connected by locking the hard resin-made grommet inner 20 to the hard resin-made soundproof material holder inner 70, a strong connection state can be maintained. Further, since the soundproofing material 4 disposed on one plate surface of the panel 1 is pressed by the flange portion 62 of the soundproofing material pressing outer 61, the soundproofing material 4 is surely attached as compared with the case where the soundproofing material is pressed by a soft lip. It can be pressed down. Moreover, since the part which contacts the soundproof material 4 is a soft material part (soundproof material pressing outer 61), the shape of the soundproof material 4 can be flexibly followed.

  In addition, since the panel seal portion 12 of the grommet outer 11 disposed on the flange portion 21 of the grommet inner 20 is pressed and brought into close contact with the panel 1, it can be strongly pressed and a reliable sealing effect can be obtained.

  Further, since the cylindrical portion 72 on the soundproof material pressing inner 70 side and the cylindrical portion 22 on the grommet inner 20 side are fitted to each other on the inner peripheral side of the through hole 2 of the panel 1, a fitting portion with respect to the through hole 2 of the panel 1 Has a double structure, which increases the mounting strength of the grommet to the panel 1 and improves the mounting stability. Further, since the mounting stability is improved, the flange portion 62 of the soundproof material pressing outer 61 and the panel seal portion 12 of the grommet main body 10 can be brought into stable and reliable pressure contact with the soundproof material 4 and the panel 1.

  Furthermore, the soundproofing material inner 70 is mounted in the through hole 2 of the panel 1, and then the cylindrical portion 22 of the grommet inner 20 is inserted and fitted into the inner periphery of the cylindrical portion 62 of the soundproofing material presser 60. Since the lock claw 74 of the material presser inner 70 can be bent and regulated by the cylindrical portion 72 of the grommet inner 70, the soundproof material presser 60 can be prevented from coming off, and the mounting stability of the grommet can be improved.

  Further, before the grommet body 10 attached to the outer periphery of the wire harness W is attached to the through hole 2 of the panel 1, the soundproof material holder 60 is attached to the through hole 2 of the panel 1, so that Since the wire harness W inserted into the through-hole 2 can be protected from the edge of the through-hole 2 of the panel 1, there is no fear of damaging the wire harness W when the grommet is attached.

  In this grommet, the grommet outer 11 of the grommet body 10 is provided with a partition wall 15 and an auxiliary sound insulation wall 16 so as to secure an air layer between these double walls (the partition wall 15 and the auxiliary sound insulation wall 16). Therefore, the sound insulation effect can be enhanced.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

DESCRIPTION OF SYMBOLS 1 Panel 2 Through-hole 4 Soundproof material 10 Grommet main body 11 Grommet outer 12 Panel seal part 13 Wire harness seal part 15 Partition part 16 Auxiliary sound insulation wall 20 Grommet inner 21 Flange part (2nd flange part)
22 Cylindrical part (second cylindrical part)
23 Tapered part 24 Lock claw (second lock part)
60 Soundproof material retainer 61 Soundproof material retainer outer 62 Flange (first flange)
70 Soundproof material holding inner 72 Cylindrical part (first cylindrical part)
74 Locking claw (first locking part)
W wire harness

Claims (2)

In the grommet that shields the space between the through hole of the panel in which the soundproof material is arranged on one plate surface and the wire harness that passes through the through hole,
An annular soundproofing material presser that is attached to the through hole of the panel from the side where the soundproofing material is disposed, and a grommet body that is attached to the throughhole of the panel from the side opposite to the side where the soundproofing material is disposed, With
The soundproof material holder includes an annular soundproof material holder inner made of hard resin that is mounted and fixed in the through hole of the panel, and an annular soundproof material holder outer made of a soft material fixed integrally to the soundproof material holder inner. Consists of
The soundproof material pressing inner is provided in a first cylindrical portion inserted into the through-hole of the panel and a distal end of a peripheral wall of the first cylindrical portion so as to be able to bend radially inward, and the distal end of the first cylindrical portion And a first lock portion that elastically locks to the periphery of the through-hole when inserted into the through-hole of the panel,
The soundproof material pressing outer has a first flange portion that presses and adheres to the plate surface of the soundproofing material when the soundproof material pressing inner is mounted and fixed to the panel.
On the other hand, the grommet main body is made of a hard material annular grommet inner that is connected to the soundproof material pressing inner when inserted into the through hole of the panel, and a soft material integrally fixed to the grommet inner. Grommet outer,
The grommet inner is inserted and fitted into the inner periphery of the first cylindrical portion of the soundproof material pressing inner, thereby the second cylindrical portion that restricts the inward bending of the first lock portion, and the second A second lock portion that is provided at a distal end of the peripheral wall of the cylindrical portion, and is engaged with the soundproof material pressing inner when the second cylindrical portion is inserted and fitted into the first cylindrical portion of the soundproof material pressing inner; A second flange portion facing the other plate surface of the panel when the second lock portion is locked to the soundproof material pressing inner,
The grommet outer is disposed on the second flange portion, and when the second flange portion faces the other plate surface of the panel, the grommet outer is pressed and adhered to the plate surface around the through-hole of the panel. A small-diameter cylindrical shape that is provided on the inner peripheral side of the second cylindrical portion of the grommet inner and seals between the penetrated wire harness and the annular harness. The wire harness seal part and the partition part which connects the said panel seal part and the said wire harness seal part are integrally provided. The grommet for wire harnesses characterized by the above-mentioned.   The said grommet outer is equipped with the auxiliary | assistant sound insulation wall which defines an air layer between the said partition parts, The grommet for wire harnesses of Claim 1 characterized by the above-mentioned.

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