JP5065927B2 - Grommet - Google Patents

Description

  The present invention relates to a grommet which is detached and disassembled by pulling the wire harness when the wire harness with grommet arranged in a vehicle is removed from a vehicle body.

  An example of this type of grommet is shown in FIG. 8 (see, for example, Patent Document 1).

  As shown in FIGS. 8A and 8B, the grommet 1 includes a thin small-diameter tube portion 2 into which the wire harness 7 is inserted, a thin and curved inclined portion 3, and a thick large-diameter tube. Part 4. The small diameter cylindrical portion 2 is fixed to the wire harness 7 with a cylindrical fixing member 5. Further, the inner wall surface 3 a of the inclined portion 3 has an elongated connecting portion 6 that extends from the opening of the large-diameter cylindrical portion 4 toward the vehicle compartment. The leading end 6 a of the connecting portion 6 is bound to the wire harness 7 with a tape 8. Further, a fitting groove 4 b to be fitted into the through hole 9 a of the panel 9 is provided on the outer wall surface 4 a of the large diameter cylindrical portion 4.

And when removing the wire harness 7 from the through-hole 9a of the panel 9 at the time of dismantling of the vehicle, etc., as shown in FIG. 8 (b), when a tensile force F is applied to the wire harness 7 from the vehicle compartment side, Along with the displacement of the wire harness 7 toward the passenger compartment, the connecting portion 6 provided on the inner wall surface 3a of the inclined portion 3 is displaced toward the passenger compartment, and in conjunction with this, the inclined portion 3 is locally connected to the passenger compartment. Deformed by being pulled to the side. Due to the local deformation of the inclined portion 3, the vicinity of the fitting groove 4 b of the large diameter cylindrical portion 4 is partially deformed, and the fitting groove 4 b of the large diameter cylindrical portion 4 is detached from the through hole 9 a of the panel 9. Then, the grommet 1 is removed.
JP 2000-233696 A

  However, in the conventional grommet 1, since it is necessary to fix the tip 6a of the connecting portion 6 of the inclined portion 3 to the wire harness 7 with the tape 8, the assembling work becomes complicated, and when the wire harness 7 is pulled. Without the large pulling force F, it was difficult to remove the grommet 1 from the through hole 9 a of the panel 9.

  Accordingly, the present invention has been made to solve the above-described problems, and provides a grommet that can easily and reliably remove a wire harness from a through-hole of a panel by a simple operation of pulling the wire harness. For the purpose.

  The invention of claim 1 has a thin small-diameter cylindrical portion into which the wire harness is inserted, a thin inclined portion, and a thick large-diameter cylindrical portion, and the panel penetrates the outer wall surface of the large-diameter cylindrical portion. In a grommet provided with a fitting groove to be fitted into the hole, a reinforcing portion is provided on at least one side of the inner wall surface of the inclined portion and the inner wall surface of the large-diameter cylindrical portion, and the wire harness is removed from the panel The wire harness can be pulled freely by using the fitting groove of the large-diameter cylindrical portion on the reinforcing portion side as a fulcrum, and the other side of the inclined portion and the large-diameter cylindrical portion can be elastically deformed. And

  The invention according to claim 2 is the grommet according to claim 1, wherein a plurality of ribs are provided on at least one side of the inner wall surface of the inclined portion and the inner wall surface of the large-diameter cylindrical portion to form the reinforcing portion. It is characterized by that.

  The invention according to claim 3 is the grommet according to claim 1, wherein a thick portion is provided on at least one side of the inner wall surface of the inclined portion and the inner wall surface of the large-diameter cylindrical portion to form the reinforcing portion. It is characterized by.

  As described above, according to the first aspect of the present invention, the reinforcing portion is provided on at least one side of the inner wall surface of the inclined portion and the inner wall surface of the large-diameter cylindrical portion, and when the wire harness is removed from the panel, the reinforcing portion side is provided. The wire harness can be pulled freely with the fitting groove of the large-diameter cylindrical portion as a fulcrum, and the other side of the inclined portion and the large-diameter cylindrical portion can be elastically deformed, so that the wire harness can be easily pulled. By the work, the wire harness with the grommet can be easily and reliably removed from the through hole of the panel.

  According to the invention of claim 2, a plurality of ribs are provided on at least one side of the inner wall surface of the inclined portion and the inner wall surface of the large-diameter cylindrical portion, respectively, so that the reinforcing portion can be provided. By the work, the wire harness with the grommet can be easily and reliably removed from the through hole of the panel.

  According to the invention of claim 3, by providing the thickened portion on at least one side of the inner wall surface of the inclined portion and the inner wall surface of the large-diameter cylindrical portion as a reinforcing portion, a simple operation of simply pulling the wire harness Thereby, the wire harness with a grommet can be easily and reliably removed from the through hole of the panel.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a side view showing a grommet according to a first embodiment of the present invention, FIG. 2 is an explanatory view of the grommet viewed from the large-diameter cylindrical portion side, FIG. 3 is a sectional view of the grommet, and FIG. FIG.

  As shown in FIGS. 1 to 4, the grommet 10 has a thin and cylindrical small-diameter cylindrical portion 11 into which the wire harness 7 is inserted, and a thin and conical cylindrical shape integrally formed with the small-diameter cylindrical portion 11. An inclined portion 12 and a thick and cylindrical large-diameter cylindrical portion 13 integrally formed with the inclined portion 12 are provided, and the small-diameter cylindrical portion 11, the inclined portion 12, and the large-diameter cylindrical portion 13 are elastic such as rubber. It is integrally formed of materials.

  As shown in FIGS. 1 and 3, an annular convex portion 11 a is integrally formed on the opening side of the outer wall of the small diameter cylindrical portion 11. And this small diameter cylinder part 11 is being fixed to the wire harness 7 via the tape 8. FIG. Further, on the outer wall surface 13a of the large diameter cylindrical portion 13, an annular concave fitting groove 13b to be fitted into the through hole 9a of the vehicle panel (vehicle body) 9 is formed.

  As shown in FIGS. 2 and 3, three ribs (reinforcement) are provided along the longitudinal direction of the wire harness 7 on the left and right sides and the lower side of the inner wall surface 12 c of the inclined portion 12 and the inner wall surface 13 c of the large-diameter cylindrical portion 13. Part) 14 are formed integrally protruding. As shown in FIG. 4, when the wire harness 7 is removed from the through hole 9 a of the panel 9, the wire harness 7 is placed in the compartment using the fitting groove 13 b of the large-diameter cylindrical portion 13 on each rib 14 side as a fulcrum P. The upper side of the inclined portion 12 and the large-diameter cylindrical portion 13 can be elastically deformed while being able to be pulled obliquely downward on the side.

  According to the grommet 10 of the above-described embodiment, as shown in FIGS. 1 and 3, when the wire harness 7 and the grommet 10 are attached, the wire harness 7 is passed through the small diameter cylindrical portion 11 of the grommet 10, The tape 8 is wound around the portion 11 and fixed to the wire harness 7, and a waterproofing agent (not shown) is injected between the small-diameter cylindrical portion 11 and the wire harness 7 to perform waterproofing. From this state, the grommet 10 is attached to the panel 9 by fitting the fitting groove 13 b of the large-diameter cylindrical portion 13 into the through hole 9 a of the vehicle panel (vehicle body) 9.

  Then, when the wire harness 7 is removed from the through-hole 9a of the panel 9 at the time of vehicle disassembly work, etc., as shown in FIG. When the wire harness 7 is pulled obliquely downward on the passenger compartment side, with the fitting groove 13b of the large-diameter cylindrical portion 13 on each rib 14 side as a fulcrum P By doing so, the weak upper side which is not reinforced by the inclined portion 12 and the rib 14 of the large diameter cylindrical portion 13 is easily elastically deformed, and the fitting groove 13b of the large diameter cylindrical portion 13 is formed from the through hole 9a of the panel 9. The grommet 10 is detached and removed.

  As described above, the three ribs 14 as the reinforcing portions are integrally formed at the positions 90 degrees apart from the left and right sides of the inner wall surface 12c of the inclined portion 12 of the grommet 10 and the inner wall surface 13c of the large-diameter cylindrical portion 13 respectively. When the wire harness 7 is removed from the through hole 9a of the panel 9, the wire harness 7 is pulled obliquely downward from the passenger compartment side with the fitting groove 13b of the large-diameter cylindrical portion 13 on each rib 14 side as a fulcrum P. The weak upper side that is not reinforced by the inclined portion 12 and the rib 14 of the large-diameter cylindrical portion 13 is elastically deformed toward the passenger compartment side, so that the fitting groove 13b of the large-diameter cylindrical portion 13 extends from the through hole 9a of the panel 9. By detaching, the wire harness 7 with the grommet 10 can be easily and reliably removed from the through hole 9a of the panel 9 by a simple operation of pulling the wire harness 7 obliquely downward from the passenger compartment side.

  FIG. 5 is an explanatory view of the grommet according to the second embodiment of the present invention as viewed from the large-diameter cylindrical portion side.

  The grommet 10 ′ of the second embodiment has a thick-walled portion (reinforcement) along the longitudinal direction of the wire harness 7 below both the left and right sides of the inner wall surface 12 c of the inclined portion 12 and the inner wall surface 13 c of the large-diameter cylindrical portion 13. Part) 15 is integrally formed. Thus, similar to the grommet 10 of the first embodiment, the wire harness 7 with the grommet grommet 10 ′ from the through hole 9 a of the panel 9 can be obtained by simply pulling the wire harness 7 obliquely downward from the vehicle compartment side. Can be removed easily and reliably.

  Note that, according to the first embodiment, there are three reinforcing portions at positions 90 degrees apart from the left and right sides of the inner wall surface 12c of the inclined portion 12 of the grommet 10 and the inner wall surface 13c of the large-diameter cylindrical portion 13. Although the rib 14 is integrally formed to protrude, as shown in FIG. 6, 2 as a reinforcing portion is positioned 120 degrees apart on the right side and the lower side of the inner wall surface 12 c of the inclined portion 12 and the inner wall surface 13 c of the large-diameter cylindrical portion 13. Two ribs 14 may be integrally formed.

  Further, according to the second embodiment, reinforcement is performed along the longitudinal direction of the wire harness 7 below both the left and right sides of the inner wall surface 12 c of the inclined portion 12 of the grommet 10 ′ and the inner wall surface 13 c of the large-diameter cylindrical portion 13. As shown in FIG. 7, the thick-walled portion 15 is integrally protruded from the right side of the inner wall surface 12 c of the inclined portion 12 and the inner wall surface 13 c of the large-diameter cylindrical portion 13. The thick portion 15 'as the reinforcing portion may be integrally projected so as to extend along the line.

It is a side view which shows the grommet of 1st Embodiment of this invention. It is explanatory drawing which looked at the said grommet from the large diameter cylinder part side. It is sectional drawing of the said grommet. It is sectional drawing at the time of removing the said grommet. It is explanatory drawing which looked at the grommet of 2nd Embodiment of this invention from the large diameter cylinder part side. It is explanatory drawing which shows the modification of the grommet of the said 1st Embodiment. It is explanatory drawing which shows the modification of the grommet of the said 2nd Embodiment. (A) is sectional drawing of the conventional grommet, (b) is sectional drawing at the time of removing the grommet.

Explanation of symbols

7 Wire harness 9 Panel 9a Through hole 10, 10 'Grommet 11 Small diameter cylindrical portion 12 Inclined portion 12c Inner wall surface 13 Large diameter cylindrical portion 13a Outer wall surface 13b Fitting groove 13c Inner wall surface 14 Rib (reinforcing portion)
15, 15 'Thick part (reinforcement part)
P fulcrum

Claims (3)

A thin-walled small-diameter tube portion into which the wire harness is inserted, a thin-walled inclined portion, and a thick-walled large-diameter tube portion are fitted into the outer wall surface of the large-diameter tube portion and are fitted into the through holes of the panel. In the grommet with the groove,
A reinforcing portion is provided on at least one side of the inner wall surface of the inclined portion and the inner wall surface of the large-diameter cylindrical portion, and when the wire harness is removed from the panel, the fitting groove of the large-diameter cylindrical portion on the reinforcing portion side The grommet is characterized in that the wire harness can be pulled freely with the other side of the inclined portion and the large-diameter cylindrical portion being elastically deformable. The grommet according to claim 1,
A grommet characterized in that a plurality of ribs are provided on at least one side of the inner wall surface of the inclined portion and the inner wall surface of the large-diameter cylindrical portion to form the reinforcing portion. The grommet according to claim 1,
A grommet characterized in that a thick portion is provided on at least one side of an inner wall surface of the inclined portion and an inner wall surface of the large-diameter cylindrical portion to form the reinforcing portion.

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