JP7143037B2 - Grommet - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grommet that spans between a vehicle body and an opening/closing member that can be opened and closed with respect to the vehicle body, and has a wire harness inserted therein.

For example, a grommet is installed between the vehicle body and the back door provided at the rear end of the vehicle, and power is supplied to the stop lamp (brake lamp) etc. It is done via a wire harness that is inserted.

The grommet has a tubular grommet body provided with a vehicle body side fixing portion fixed to the vehicle body at one end thereof, and a back door side fixing portion fixed to the back door at the other end thereof. A through hole is formed in the outer panel of the vehicle body, and the vehicle body side fixing portion is fixed to the vehicle body by fitting the vehicle body side fixing portion into the through hole. A through hole is formed in the inner panel of the back door, and the back door side fixing portion is fitted into the through hole, thereby fixing the back door side fixing portion to the vehicle body. The wire harness inserted through the grommet is pulled out from the vehicle body side fixing portion and routed between the outer panel and the inner panel of the vehicle body, and is pulled out from the back door side fixing portion and attached to the inner panel of the back door. and the outer panel.

JP 2012-239272 A JP 2015-23770 A

Projections such as bolts for attaching the high mount stop lamp to the outer panel of the back door may be present near the through hole into which the back door side fixing portion is fitted. In this case, when the back door is opened and closed, the wire harness pulled out from the back door-side fixing portion comes into contact with the projection, and if the contact is repeated, the wire harness may break.

SUMMARY OF THE INVENTION An object of the present invention is to provide a grommet that can prevent a wire harness drawn out from the grommet into a panel from coming into contact with a projection.

In order to achieve the above object, a grommet according to the present invention is a grommet that spans between a vehicle body and an opening/closing member that is provided to be openable/closable with respect to the vehicle body, and has a wire harness inserted therein. a tubular main body; a first fixing portion provided at one end of the main body and fixed by fitting into a first through hole formed in a first panel of one of the vehicle body and the opening/closing member; a second fixing portion provided at the other end portion and fixed by fitting into a second through-hole formed in a second panel of the other of the vehicle body and the opening/closing member, wherein the first fixing portion includes: A harness outlet through which a wire harness is drawn out, and a bulging portion that bulges inward from the first panel from a part of the periphery of the harness outlet are formed.

According to this configuration, the first fixing portion is provided at one end of the tubular body, and the second fixing portion is provided at the other end. A first through hole is formed in the first panel of one of the vehicle body and the opening/closing member, and the first fixing portion is fitted and fixed in the first through hole. A second panel of the vehicle body or the opening/closing member has a second through hole, and the second fixing portion is fitted and fixed in the second through hole.

A harness outlet is formed in the first fixing portion, and the wire harness inserted through the grommet is drawn inside the first panel through the harness outlet and routed inside the first panel. The first fixing portion is formed with a bulging portion that bulges inwardly of the first panel from a portion of the peripheral edge of the harness outlet. Therefore, even if a protrusion is provided in the vicinity of the first through hole inside the first panel, the bulging portion can prevent the wire harness pulled out from the harness outlet from coming into contact with the protrusion. Therefore, it is possible to suppress the occurrence of wire breakage due to repeated collisions of the wire harness with the protrusions.

A rib for reinforcement may be formed in the bulging portion. By reinforcing the bulging portion with ribs, deformation of the bulging portion can be suppressed.

A peripheral wall portion surrounding the harness outlet and a connection portion connecting the main body and the peripheral wall portion are formed in the first fixing portion. It is preferably formed as a part. As a result, even if the connection portion between the peripheral wall portion and the connecting portion receives force from the wire harness when the opening/closing member is opened and closed, the force can suppress the outward expansion of the bulging portion, and the bulging portion can act as a projection. Contact can be further suppressed.

ADVANTAGE OF THE INVENTION According to this invention, it can suppress that the wire harness pulled out in a panel from a grommet contacts a protrusion.

1 is a side view of a grommet according to one embodiment of the invention; FIG. Fig. 3 is a plan view of a grommet; 3 is a cross-sectional view of the grommet taken along section line AA shown in FIG. 2; FIG. 3 is a cross-sectional view of the grommet taken along section line BB shown in FIG. 2; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Below, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side view of a grommet 1 according to one embodiment of the invention. FIG. 2 is a plan view of the grommet 1. FIG. FIG. 3 is a cross-sectional view of grommet 1 taken along section line AA shown in FIG. 4 is a cross-sectional view of grommet 1 taken along section line BB shown in FIG.

The grommet 1 is bridged between the vehicle body and the back door provided at the rearmost part of the vehicle in order to bridge the wire harness 2 between the vehicle body and the back door. The grommet 1 integrally includes a bellows tubular body 3 , a back door side fixing portion 4 provided at one end of the main body 3 , and a vehicle body side fixing portion 5 provided at the other end of the main body 3 .

The vehicle body is provided with an outer panel 11 on the outer side of an inner panel (not shown) with a gap from the inner panel. A through hole is formed in the outer panel 11, and the vehicle body side fixing portion 5 is fitted into the through hole. An annular groove 12 is formed along the entire circumference of the outer peripheral portion of the vehicle body side fixing portion 5, and the peripheral edge portion of the through hole of the outer panel 11 is fitted into the annular groove 12 so that the vehicle body side fixing portion 5 extends outward. It is fixed to panel 11 .

The back door is provided with an outer panel (not shown) outside the inner panel 21 with a gap from the inner panel 21 . A through hole 22 is formed in the inner panel 21 , and the back door side fixing portion 4 is fitted into the through hole 22 . The back door-side fixing portion 4 has an outer shape in which a pair of semi-circular arcs that are open to opposite sides are connected by two straight lines in a plan view shown in FIG. 2 . An annular groove 24 is formed along the entire circumference of the outer peripheral surface of the peripheral wall portion 23 that forms the outer shape of the back door side. A fixed part 4 is fixed to the inner panel 21 .

A harness outlet 25 for drawing out the wire harness 2 is formed inside the peripheral wall portion 23 . A bulging portion 26 is integrally formed with the peripheral wall portion 23 of the back door side fixing portion 4 . The bulging portion 26 extends from a portion of the peripheral wall portion 23 that forms a semicircular arc on the side of the main body 3 and two straight lines connected to the semicircular arc to the inside of the inner panel 21 of the back door, that is, the outer panel side. bulging out. The wire harness 2 is pulled out into the inner panel 21 from the harness outlet 25 via the inner side of the bulging portion 26 and through the region 28 surrounded by the edge 27 of the bulging portion 26 and the peripheral edge of the harness outlet 25 . .

Inside the inner panel 21 of the back door, as shown in FIG. 4, there are bolts 29 near the through holes 22 for fixing, for example, a high mount stop lamp. An end portion 31 along the edge 27 of the bulging portion 26 is spaced apart from the bolt 29 and faces the direction in which the bolt 29 is inserted. Two ribs 32 and 33 are formed on the end portion 31 so as to protrude toward the bolt 29 side. One rib 32 extends along edge 27 and the other rib 33 extends parallel to and spaced from one rib 32 .

Further, the back door fixing portion 4 has a connecting portion 34 between the main body 3 and the peripheral wall portion 23 . As shown in FIG. 3, the connecting portion 34 has a portion 35 connected to the peripheral wall portion 23 that is thicker than a portion 36 connected to the main body 3, and the thick portion 35 is , is connected to the peripheral wall portion 23 from the inside thereof. As a result, the portion where the peripheral wall portion 23 and the connecting portion 34 are connected has high rigidity as the thick portion 37 having a particularly large thickness.

In addition, on the inner surface of the connecting portion 34, the portion facing the bulging portion 26 is curved so that the wire harness 2 is guided toward the harness outlet 25, and unevenness is formed so that the wire harness 2 is caught. do not have.

As described above, the harness outlet 25 is formed in the back door side fixing portion 4, and the wire harness 2 inserted through the grommet 1 is drawn out from the harness outlet 25 to the inside of the inner panel 21, It is routed between the inner panel 21 and the outer panel. A bulging portion 26 that bulges inward from the inner panel 21 from a portion of the peripheral edge of the harness outlet 25 is formed in the back door side fixing portion 4 . Therefore, even if a bolt 29, which is a protrusion, is provided in the vicinity of the through hole 22 between the inner panel 21 and the outer panel, the wire harness 2 pulled out from the harness outlet 25 is prevented by the bulging portion 26 from the bolt. 29 can be suppressed. Therefore, it is possible to prevent disconnection of the wiring harness 2 due to repeated collisions with the bolts 29 .

Ribs 32 and 33 for reinforcement are formed in the bulging portion 26 . By reinforcing the bulging portion 26 with the ribs 32 and 33 , deformation of the bulging portion 26 due to receiving force from the wire harness 2 can be suppressed.

A peripheral wall portion 23 that surrounds the harness outlet 25 and a connection portion 34 that connects the main body 3 and the peripheral wall portion 23 are formed in the first fixing portion. , is formed as a thickened portion 37 having a large thickness. As a result, even if the connecting portion between the peripheral wall portion 23 and the connecting portion 34 receives force from the wire harness 2 when the back door is opened and closed, the force can prevent the bulging portion 26 from expanding outward. 26 can be further suppressed from coming into contact with the bolt 29 .

Although one embodiment of the present invention has been described above, the present invention can also be implemented in other forms.

For example, in the above-described embodiment, the first fixing portion is the back door fixing portion 4, but the vehicle body side fixing portion 5 may be an example of the first fixing portion. A bulging portion may be formed in the .

In addition, various design changes can be made to the above configuration within the scope of the matters described in the claims.

1: Grommet 2: Wire harness 3: Main body 4: Back door side fixing part (first fixing part)
5: Vehicle body side fixed part (second fixed part)
11: Outer panel (second panel)
21: Inner panel (first panel)
22: through hole (first through hole)
23: Peripheral wall portion 25: Harness outlet 26: Swelling portion 32, 33: Rib 34: Connecting portion 37: Thick portion

Claims (3)

A grommet that spans between a vehicle body and an opening/closing member that can be opened and closed with respect to the vehicle body, and through which a wire harness is inserted,
a tubular body;
a first fixing portion provided at one end of the main body and fixed by fitting into a first through hole formed in a first panel of one of the vehicle body and the opening/closing member;
a second fixing portion provided at the other end of the main body and fixed by fitting into a second through hole formed in a second panel of the other of the vehicle body or the opening/closing member;
The first fixing portion is formed with a harness outlet for drawing out the wire harness and a bulging portion that bulges inward from the first panel from a part of the periphery of the harness outlet ,
having a region surrounded by an edge of the bulging portion and a peripheral edge of the harness outlet;
A grommet , wherein the wire harness is drawn through the region and into the first panel of the closure member . The grommet according to claim 1, wherein the bulging portion is formed with ribs for reinforcement. The first fixing portion is formed with a peripheral wall portion that surrounds the harness outlet and a connecting portion that connects the main body and the peripheral wall portion,
The grommet according to claim 1 or 2, wherein a connecting portion between said peripheral wall portion and said connecting portion is formed as a thick portion having a large thickness.

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