JP4545507B2 - Grommet and grommet fixing structure - Google Patents

Description

The present invention relates to a grommet and a grommet fixing structure , and more particularly to a grommet and a grommet fixing structure that can be pressed and inserted into a hole formed in a panel by breaking through a film member .

  2. Description of the Related Art Conventionally, a waterproof / soundproof sheet film is attached to the inner side surface of an inner panel constituting an automobile door on the passenger compartment side, and a flat board type door trim is mounted on the sheet film. In the vicinity of the outer edge of the door trim, a plurality of trim side mounting holes for fixing to the inner panel are formed, and the panel side mounting holes for fixing the trim are also opposed to the trim side mounting holes on the inner panel. A plurality of holes are drilled at the positions to be performed. Further, a resin grommet is inserted into the panel side mounting hole. Then, the shaft portion of the substantially mushroom-shaped clip is inserted into the trim side mounting hole of the door trim, and the tip end of the shaft portion is pressed and inserted into the grommet inserted into the panel side mounting hole. As a result, the clip is fixed in close contact with the panel side mounting hole without any gap, and the door trim is firmly fixed to the inner panel without any gap.

Thus, in the grommet which improves the sealing performance in the mounting hole of the clip for fixing the plate (panel or the like), for example, a screw pin having a head and a male screw and a circular hole into which the screw pin is pressed and inserted. A connecting tool comprising two parts with a receiving part (grommet) having a plurality of protrusions provided in the longitudinal direction on the inner peripheral surface of the circular hole of the receiving part and fitted with male screws. Is known (see, for example, Patent Document 1).
JP-A-5-149310

  However, according to the connector disclosed in Patent Document 1, when the hole formed in the plate is covered with a film member such as a sheet film as described above, the bottom portion of the receiving portion abuts on the film member. There was a problem that the receiving part could not be inserted into the hole. For example, when the door trim described above is set large, it is necessary to fix the central portion because the central portion of the door trim is easily loosened only by fixing the vicinity of the outer edge of the door trim. Therefore, if this connecting tool is applied, the receiving hole cannot be inserted into the mounting hole because there is a sheet film in the mounting hole formed at the position facing the central portion of the inner panel. In addition, when a hole is provided in the sheet film in advance, if there is a deviation between the position of the hole in the sheet film adhered to the inner panel and the position of the mounting hole in the inner panel, There was also a problem that a gap was generated between the receiving portion and the outer peripheral surface of the receiving portion, resulting in a sealing failure of the connector in the mounting hole of the inner panel.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a grommet and a grommet fixing structure that can be pressed and inserted into a mounting hole of a plate member without a gap even when a film member is interposed. .

In order to achieve the above object, according to the grommet according to claim 1, a panel formed in the inner panel for mounting a door trim via a film member on the inner side surface of the inner panel of the door through the film member It pushed through the film member on a side mounting hole, the shank tip of the clip which is inserted into drilled trim side mounting hole in the door trim, in the grommet for guiding to said panel side mounting hole, the grommet Is provided on the inside of the main body portion, coaxially with the main body portion, the insertion hole into which the shaft portion of the clip is inserted, and at one end in the axial direction of the main body portion. A flange having a predetermined width orthogonal to the axial direction of the main body and projecting outward, a substantially conical shape provided on the other end of the main body and coaxial with the main body With the cone The tip portion of the conical portion is formed with a solid pointed portion, and the generatrix of the pointed portion extending along the side surface from the tip of the pointed portion is curved toward the axis of the cone portion. It is characterized by

In the grommet according to the first aspect, for example, a film member having a waterproof and soundproof function is attached to the inner side surface of the inner panel on the passenger compartment side, and the panel side mounting hole formed in the inner panel covers the film member . Even if it is provided, the sharp part of the conical part can easily break through the film member , and the grommet can be easily inserted into the panel side mounting hole.

  Hereinafter, an embodiment to which the present invention is applied will be described with reference to the drawings. FIG. 1 is an exploded perspective view of the sliding door 1 as viewed from the passenger compartment side, and FIG. 2 is a diagram showing a state in which a door trim 17 is attached to the inner side surface of the sliding door 1 on the passenger compartment side. FIG. 4 is a perspective view of the grommet 20 of the present embodiment, FIG. 4 is a view seen from the bottom surface of the grommet 20, and FIG. 5 is a cross-sectional view in the direction of arrows BB in FIG. The diagonally lower left side in FIG. 1 is the front side of the vehicle, and the front side of FIG. 1 is the vehicle compartment side. Further, in FIG. 2, the front side of the page is the passenger compartment side of the slide door 1, and the left side of FIG. 2 is the front side of the vehicle.

  First, the structure of the slide door 1 will be described. As shown in FIG. 1, a slide door 1 that can be opened and closed in the front-rear direction of the vehicle is provided on a side surface (or both side surfaces) of a one-box or minivan vehicle. The sliding door 1 includes a metal outer panel 2, an inner panel 3 provided closer to the vehicle interior side than the outer panel 2, and a waterproof / soundproof sheet attached to the vehicle interior side surface of the inner panel 3. A film 10 and a door trim 17 mounted on the inner side surface of the inner panel 3 from above the sheet film 10 are provided.

  The inner panel 3 is a metal panel that constitutes the side surface of the sliding door 1 on the passenger compartment side. Furthermore, a substantially trapezoidal window opening 6 in plan view is formed in the upper half of the inner panel 3, and a door glass (not shown) is fitted into the window opening 6. In the lower half of the inner panel 3 than the window opening 6, panel-side mounting holes 8 facing the plurality of trim-side mounting holes 16 formed in the outer edge of the door trim 17 are formed. . And the sticking area | region F by which the sheet | seat film 10 is stuck is set to the inner part surrounded by the panel side attachment hole 8 drilled in the inner panel 3. As shown in FIG. Further, panel-side attachment holes 7 are formed at positions closer to the vehicle front side and closer to the vehicle rear side than the approximate center of the sticking region F, respectively. A door handle 5 is provided in the vicinity of the vehicle front side end of the inner panel 3 and in the vicinity of the lower side of the window opening 6. Then, by pulling the door handle 5 toward the front side of the drawing, the lock of the slide door 1 is released, and the slide operation of the slide door 1 becomes possible.

  On the other hand, the sheet film 10 has a function of preventing rainwater entering from the outside of the vehicle from entering the vehicle compartment and blocking sound leaking from the outside into the vehicle compartment. As shown in FIG. 2, the sheet film 10 is formed in a home base type that is horizontally long in a plan view. A substantially rectangular cutout for avoiding the door handle portion 5 of the inner panel 3 is provided at an upper corner portion of the seat film 10 on the vehicle front side. Then, as shown in FIG. 1, the sheet film 10 is attached to the attachment region F of the inner panel 3.

  A plurality of trim side mounting holes 16 corresponding to the plurality of panel side mounting holes 8 of the inner panel 3 are formed in the vicinity of the outer edge of the door trim 17. Further, trim-side mounting holes 18 and 18 corresponding to the panel-side mounting holes 7 and 7 are formed at positions on the vehicle front side and vehicle rear side from the approximate center of the door trim 17, respectively.

  Further, the conventional bottomed substantially cylindrical grommet 12 is pressed and inserted into all the panel side mounting holes 8 of the inner panel 3. On the other hand, the grommet 20 which is a feature of the present invention breaks through the sheet film 10 in the panel side mounting holes 7 and 7 of the inner panel 3 while being covered with the sheet film 10. Is inserted into the press.

  Next, the structure of the grommet 20 that is a feature of the present invention will be described with reference to FIGS. As shown in FIG. 3, the grommet 20 is formed in a deep-bottomed bowl shape and is integrally molded with a synthetic resin (for example, ethylene vinyl acetate copolymer resin). The grommet 20 includes a substantially cylindrical main body portion 22, and an insertion hole 26 into which a tip of a shaft portion 15 a of a clip 15 (see FIG. 1) described later can be inserted is formed inside the main body portion 22. Yes. As shown in FIGS. 4 and 5, a substantially ring-shaped projection having a predetermined width projecting radially inwardly on the inner peripheral surface of the insertion hole 26 from the substantially middle in the axial direction to the distal end side. 27 is provided. This protrusion 27 is provided in order to improve the releasability from the mold. Further, as shown in FIG. 3 to FIG. 5, the main body portion 22 has a predetermined width (for example, 4 mm) that protrudes outward from the one end side in the axial direction of the main body portion 22 perpendicular to the axial direction of the main body portion 22. A flange portion 28 is projected. The width of the flange portion 28 is not limited to this and can be freely changed.

  On the other hand, as shown in FIGS. 3 and 5, on the other end side of the main body portion 22, a hollow conical portion 23 formed in a substantially conical shape is provided coaxially with the main body portion 22. A pointed portion 25 that is formed in a solid shape is formed at the tip in the axial direction of the conical portion 23. Further, an imaginary generatrix of the sharpened portion 25 extending along the side surface from the axial end of the sharpened portion 25 is curved toward the axial center of the conical portion 23. Therefore, the sharpened portion 25 forms a sharp pointed shape and is solid, and thus has a high strength that can easily break through the sheet film 10 (see FIG. 1). Here, the tip strength required for the sharpened portion 25 is set so that the sheet film 10 covered in the panel side mounting hole 7 can be pierced with a light pressing force (for example, about 3 kg weight or less). ing.

  Next, a method for fixing the door trim 17 to the inner panel 3 will be described with reference to FIG. As shown in FIG. 1, the door trim 17 is made to face and abut against the inner side surface of the inner panel 3 on the passenger compartment side. Then, the clip 15 is pressed and inserted through the trim side mounting hole 16 of the door trim 17 into the grommet 12 inserted and fixed in the plurality of panel side mounting holes 8 of the inner panel 3. The clip 15 is formed in a substantially mushroom shape, and includes a substantially rod-shaped shaft portion 15a and a head portion 15b provided at one end in the longitudinal direction of the shaft portion 15a. By inserting the tip into an insertion hole (not shown) of the grommet 12, the clip 15 is fixed to the grommet 12, and the outer edge of the door trim 17 is fixed in close contact with the inner side surface of the inner panel 3 on the passenger compartment side ( (See FIG. 2). The grommet 12 improves the sealing performance with the panel side mounting hole 8.

  Next, a case where the central portion of the door trim 17 is fixed to the inner panel 3 using the grommet 20 having the above-described configuration will be described with reference to FIGS. 1 and 4 to 10. 6 is a cross-sectional view showing a state in which the sharpened portion 25 of the grommet 20 faces the panel-side mounting hole 7 as seen from the direction of arrows AA in FIG. 1, and FIG. It is sectional drawing which shows the state which the sharp part 25 of the grommet 20 contacts the sheet | seat film 10 which covered the panel side attachment hole 7 seen from the A line arrow direction, FIG. 8 is the AA line arrow of FIG. It is sectional drawing which shows the state which the sharp part 25 of the grommet 20 pierced through the sheet | seat film 10 which covered the panel side attachment hole 7 seen from the viewing direction, FIG. 9 is the AA arrow direction of FIG. FIG. 10 is a cross-sectional view showing a state in which the grommet 20 is pressed and inserted into the panel side mounting hole 7 as viewed from FIG. 10, and FIG. 10 shows the panel side mounting hole 7 as viewed from the direction of arrows AA in FIG. A state in which the grommet 20 is pressed and inserted and the center portion of the door trim 17 is covered from above is shown. Is a cross-sectional view, FIG. 11 is a sectional view showing a state where the clip 15 is pressed into the grommet 20 shown in FIG. 10.

  First, as shown in FIG. 1, the panel-side mounting hole 7 is covered with the sheet film 10 by sticking the sheet film 10 to the sticking region F (see FIG. 1) of the inner panel 3. Then, as shown in FIG. 6, the sharpened portion 25 of the conical portion 23 of the grommet 20 is opposed to the panel side mounting hole 7 covered with the sheet film 10. Next, as shown in FIG. 7, when the grommet 20 is pressed and inserted as it is toward the panel-side mounting hole 7, the sharpened portion 25 of the grommet 20 comes into contact with the sheet film 10, and the sheet film 10 is placed outside the inner panel 3. Press towards. Then, as shown in FIG. 8, the sheet film 10 is torn by the pressing force of the sharpened portion 25 of the grommet 20, and the grommet 20 is in the order of the sharpened portion 25, the conical portion 23, and the main body portion 22 in the panel side mounting hole 7 (FIG. Inserted). And the film edge part 10a to which the sheet | seat film 10 was torn is pushed in the direction which goes to the vehicle interior outer side from the vehicle interior side of the panel side attachment hole 7 (refer FIG. 6).

  Further, when the grommet 20 is pushed into the panel side mounting hole 7, as shown in FIG. 9, the flange portion 28 protruding from the main body portion 22 of the grommet 20 has a panel side mounting hole 7 (see FIG. 6) and abut against the edge. Thus, the grommet 20 is inserted and fixed in the panel side mounting hole 7 (see FIG. 6) with the sheet film 10 interposed therebetween. At this time, the film end portion 10 a further adheres along the outer peripheral surface of the main body portion 22 of the grommet 20. Therefore, there is no gap between the outer peripheral surface of the main body 22 of the grommet 20 and the panel side mounting hole 7, so that the grommet 20 can be closely attached and fixed to the panel side mounting hole 7.

  Next, as shown in FIG. 10, the interior of the inner panel 3 in the vehicle compartment side in the state where the grommet 20 is pressed and inserted into the panel side mounting hole 7 (see FIG. 6) via the sheet film 10. The side of the mounting side of the door trim 17 is brought into contact with the side surface, and the trim side mounting hole 18 is made to face the insertion hole 26 of the grommet 20. Finally, as shown in FIG. 11, the front end of the shaft portion 15 a of the clip 15 is pressed from the vehicle compartment side against the trim side mounting hole 18 (see FIG. 10) of the door trim 17 in contact with the inner panel 3. insert. Then, the tip of the shaft portion 15a of the clip 15 passes through the trim side mounting hole 18 (see FIG. 10) and is inserted into the insertion hole 26 of the grommet 20, and into the panel side mounting hole 7 (see FIG. 6). Guided. Then, the head portion 15 b of the clip 15 is locked to the edge of the trim side mounting hole 18 (see FIG. 10) of the door trim 17, and the clip 15 is completely inserted into the insertion hole 26 of the grommet 20. In this way, as shown in FIG. 2, since the center part of the door trim 17 is firmly fixed by the clip 15, the vibration of the center part can be stopped and the generation of abnormal noise by the center part can be prevented. . Furthermore, since the slack formed in the center portion of the large door trim can be eliminated, the door trim can be given a sense of rigidity.

  As described above, in the grommet 20 of the present embodiment, the generatrix of the sharp portion 25 of the conical portion 23 is curved toward the axial center of the conical portion, and thus the sharp portion 25 is sharply pointed. Further, since the sharpened portion 25 is formed solid, the sheet film 10 covered in the panel side mounting hole 7 can be easily pierced by a simple pressing operation of the grommet 20 with a bare hand. The grommet 20 can be pressed and inserted into the mounting hole 7. For example, when the large door trim 17 is attached to the inner panel 3, the panel side mounting hole 7 is set at the approximate center of the inner panel 3, and the trim side mounting hole 18 is set at the approximate center of the door trim 17. The pointed portion 25 breaks through the sheet film 10 covering the panel side mounting hole 7, and the grommet 20 is pressed and inserted into the panel side mounting hole 7. Therefore, since the center part of the door trim 17 can be fixed to the inner panel 3, the vibration of the door trim 17 can be stopped and generation | occurrence | production of abnormal noise can be prevented. Furthermore, the central part of the door trim 17 can have a rigidity.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the pointed portion 25 of the grommet 20 of the present embodiment has a pointed shape as shown in FIG. 3, but may have a sharper point than this, or may have a pointed shape that is gentler than this, and the sheet film 10 Any sharp shape that can be easily broken through may be used.

  Moreover, in this embodiment, although the grommet 20 is shape | molded with the ethylene vinyl acetate copolymer resin, it can also shape | mold also with another resin material.

  The grommet of the present invention is not limited to the case where the door trim is attached to the door inner panel of the automobile, but is also applicable to the case where the trims are attached to the inner panel of the automobile.

It is the disassembled perspective view seen from the vehicle compartment side of the slide door. It is a figure which shows the state by which the door trim 17 was mounted | worn on the vehicle interior side inner surface of the sliding door. It is a perspective view of the grommet 20 of this embodiment. It is the figure seen from the bottom face of the grommet 20. FIG. FIG. 4 is a cross-sectional view in the direction of arrows BB in FIG. 3. It is sectional drawing which shows the state which the sharp part 25 of the grommet 20 opposes to the panel side attachment hole 7 seen from the AA arrow direction of FIG. It is sectional drawing which shows the state which the sharp part 25 of the grommet 20 contacts the sheet | seat film 10 which covered the panel side attachment hole 7 seen from the AA arrow direction of FIG. It is sectional drawing which shows the state which the sharp part 25 of the grommet 20 broke through the sheet film 10 which covered the panel side attachment hole 7 seen from the AA arrow direction of FIG. It is sectional drawing which shows the state by which the grommet 20 was press-inserted in the panel side attachment hole 7 seen from the AA arrow direction of FIG. It is sectional drawing which shows the state where the grommet 20 was press-inserted in the panel side attachment hole 7, and the center part of the door trim 17 was covered from the top seen from the AA arrow direction of FIG. It is sectional drawing which shows the state by which the clip 15 was press-inserted in the grommet 20 shown in FIG.

DESCRIPTION OF SYMBOLS 1 Slide door 2 Outer panel 3 Inner panel 7 Panel side attachment hole 15 Clip 15a Shaft part 17 Door trim 18 Trim side attachment hole 20 Grommet 22 Main body part 23 Conical part 25 Pointed part 26 Insertion hole 27 Protrusion part 28 Flange part

Claims (2)

In order to attach the door trim via the film member to the inner side surface of the inner panel of the door through the film member, it is pushed into the panel side mounting hole formed in the inner panel via the film member and drilled in the door trim. In the grommet for guiding the tip end of the clip portion inserted in the trim side mounting hole to the panel side mounting hole,
The grommet is
A substantially cylindrical body,
An insertion hole provided on the inner side of the main body portion and coaxially with the main body portion, into which the shaft portion of the clip is inserted,
A flange having a predetermined width projecting outward and perpendicular to the axial direction of the main body portion on one end side in the axial direction of the main body portion;
A substantially conical conical portion provided on the other end side of the main body portion and provided coaxially with the main body portion;
At the tip of the conical part, a sharply formed point is formed,
The grommet characterized in that the generatrix of the sharp part extending along the side surface from the tip of the sharp part is curved toward the axis of the conical part.   In order to attach the door trim to the inner side surface of the inner panel of the door through the film member, the shaft end of the clip inserted in the trim side mounting hole formed in the door trim is drilled in the inner panel. In the grommet fixing structure for fixing the grommet that guides to the provided panel side mounting hole to the panel side mounting hole,
  The grommet is
  A substantially cylindrical body,
  An insertion hole provided on the inner side of the main body portion and coaxially with the main body portion, into which the shaft portion of the clip is inserted,
  A flange having a predetermined width projecting outward and perpendicular to the axial direction of the main body on the one axial end of the main body;
  A substantially conical conical portion provided on the other end side of the main body and provided coaxially with the main body;
With
  The tip portion of the conical portion is formed with a sharp pointed portion,
  The generatrix of the pointed portion extending along the side surface from the tip of the pointed portion is curved toward the axis of the conical portion,
  The grommet is pushed into the panel-side mounting hole of the inner panel from above the film member, and the film member is broken by the pressing force of the sharp part, and the end portion generated by breaking the film member is The panel side mounting hole is pushed in a direction from the vehicle interior side toward the vehicle exterior side to be in close contact with the outer peripheral surface of the main body, and the flange is locked to the inner panel via the film member. The grommet fixing structure is characterized in that the grommet is fixed to the panel side mounting hole.

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