WO2015012153A1

WO2015012153A1 - Grommet

Info

Publication number: WO2015012153A1
Application number: PCT/JP2014/068770
Authority: WO
Inventors: 大樹石山; 彰浩山田; 奥原　崇; 飯島　章; 中西　一裕; 健児砂場
Original assignee: 住友電装株式会社
Priority date: 2013-07-23
Filing date: 2014-07-15
Publication date: 2015-01-29
Also published as: JP2015023770A; JP6121276B2; CN105409075B; CN105409075A

Abstract

The present invention prevents deformation of terminals in a connector of a wire harness terminal that is installed through a grommet. This grommet is to be installed around a wire harness, which is installed so as to extend between a vehicle body and a door, in order to attach large-diameter tube sections, which are provided on either end of a connecting tube section, to through holes which are respectively provided on the vehicle body and the door. A resin inner having protruding locking claws is fitted into one of the large-diameter tube sections located on one side, a sideway connector connected to the terminals of the wire harness is fixed inside the resin inner, and a wire fixing piece, which is used to fix the wire harness led out from the sideway connector by being wound with a tape, is protruded from the inner edge of the resin inner while being bent into an L-shape toward the connecting tube section side.

Description

Grommet

The present invention relates to a grommet sheathed on a wire harness, and more specifically, when the connector of the wire harness terminal is disposed on one end side of a grommet sheathed on a wire harness routed between an automobile door and a vehicle body, The terminal of the wire harness terminal locked in the connector is prevented from being deformed when the door is opened and closed.

The present applicant provides a grommet shown in FIG. 6 in Japanese Patent Application Laid-Open No. 2011-62073 as a grommet that is externally mounted on a wire harness that is routed between an automobile back door and a vehicle body. The grommet 100 is provided with large-

diameter cylinder portions

111 and 112 for locking the vehicle body that are bent in opposite directions at both ends of the bellows cylinder portion 110, and a continuous hollow portion is used as a wire harness insertion passage 113. One large-diameter cylindrical portion 111 is provided with an annular vehicle body locking groove 115 on the outer peripheral surface, locked to the periphery of a through hole provided in the back door panel, and a resin inner 120 is assembled to the other large-diameter cylindrical portion 112. A locking claw for locking the vehicle body protrudes from the outer peripheral surface of the resin inner 120 and is locked to the periphery of the through hole of the vehicle body panel.

As shown in FIG. 7, a connector 210 is connected to a terminal of a wire harness 200 that is inserted through the grommet 100. Specifically, the terminal 201 connected to the tip of each electric wire 200w constituting the wire harness 200 is inserted and locked to the connector 210, the electric wire 200w is laterally extended from the connector 210, and is passed through the wire harness insertion passage 113 of the grommet 100. ing. The connector 210 that runs out of the electric wire 200w is fitted in a standby connector 250 that is fixed in advance to a position facing the through hole in a state where the locking claw of the resin inner 120 is locked in the through hole 220H of the vehicle body panel 220. Is done.

In this way, the connector 210 to be fitted to the standby connector 250 on the vehicle body side is fixed to the vehicle body side at one end of the grommet 100, and the electric wire 200 w of the wire harness 200 that extends from the connector 210 is inserted into the grommet 100. The other end of the grommet 100 is fixed to the back door.

JP 2011-62073 A

In the grommet externally mounted on the wire harness extending between the back door and the vehicle body, tension is applied to the wire harness electric wire 200w inserted through the grommet 100 when the back door is opened and closed, and the grommet is locked in the lateral connector 210. Deformation is likely to occur in the terminal 201 of the electric wire terminal. In addition, since the back door is repeatedly opened and closed, the deformed terminal 201 is likely to be damaged.

The present invention solves the above-mentioned problems, and in a grommet that is externally mounted on a wire harness that spans between a door and a vehicle body, a terminal of an electric wire terminal that is inserted and locked in a lateral connector that is housed and fixed on one end of the grommet. The problem is to prevent deformation.

In order to solve the above-mentioned problems, the present invention externally covers a wire harness that spans between a vehicle body and a door, and attaches large-diameter cylindrical portions at both ends of a connecting cylindrical portion to through holes provided in the vehicle body and the door, respectively. Grommet,
A resin inner with a locking claw protruding from the one end side of the large-diameter cylindrical portion is fitted inside, and a lateral connector connected to the end of the wire harness is fixed inside the resin inner and pulled out from the connector. The grommet is characterized in that an electric wire fixing piece for fixing the wire harness to be taped is bent in an L shape from the inner end of the resin inner to the connecting tube portion side.

As described above, in the grommet of the present invention, at the position where the electric wire drawn out from the laterally extending connector that is fitted and fixed to the inner resin attached to one end is laterally bent, the electric wire fixing piece provided on the inner resin is fixed with tape. ing. Thus, since the electric wire is fixed to the electric wire fixing piece at a position close to the connector, the tension applied to the electric wire when the door is opened and closed is reduced and prevented from being transmitted to the terminal locked in the connector. Deformation can be prevented.

Further, the wire fixing piece has an arc shape that follows the shape of the connecting tube portion, and a protrusion is provided from the outer periphery of the tip of the wire fixing piece, and the portion of the connecting tube portion that contacts the protrusion protrudes outward. It is preferable to use it as a mark.

Since the wire fixing piece of the resin inner is located in the connecting cylinder part of the grommet, the fixing position of the wire harness fixed by the wire fixing piece cannot be measured from the outside. However, if a protrusion is provided at the tip of the wire fixing piece, the connecting tube portion of the portion that hits the protrusion is pushed out to the outer peripheral side and protrudes. Therefore, since the protruding position is the fixing position of the wire harness, the wire harness fixing point in the grommet can be easily measured from the outside. And the tip position of the resin inner wire fixing piece can be inspected with the appearance and external tactile sensation at the protruding position, and it is confirmed whether the resin inner fixing position with respect to the grommet is the normal position, It is possible to prevent the occurrence of errors.

The grommet is externally mounted on a wire harness that extends between a back door and a vehicle body of an automobile, and the resin claws provided in the resin inner are locked in through holes provided in a panel of the back door. It is preferable that the laterally attached connector attached to the inner side is fitted to a standby connector that faces and is fixed to a through hole provided in the back door panel.
Note that the back toe mounting side and the vehicle body mounting side of the grommet may be reversed. That is, the standby connector may be fixed facing the through hole of the vehicle body panel, and the connector connected to the standby connector may be attached to the end of the wire harness that runs between the vehicle body panel and the back door. Also in this case, the connector of the wire harness terminal is locked and attached to the resin inner of the grommet of the present invention that is sheathed on the wire harness, and the electric wire drawn out from the connector is taped and fixed to the electric wire fixing piece protruding from the inner resin. Yes.

The connecting tube portion of the grommet of the present invention is a substantially L-shaped cylindrical tube in which the portions that are continuous with the large-diameter tube portions on both sides are bent in opposite directions, and the cylindrical tubes on both sides are continuous with a bellows tube. It is preferable that the ring-shaped engagement groove is provided on the outer peripheral surface of the large-diameter cylindrical portion on the vehicle body panel side, and is engaged with the periphery of the through hole provided in the vehicle body panel.

Note that the grommet of the present invention is applied not only to the exterior of a wire harness that spans between the back door of the vehicle and the vehicle body, but also as an exterior material for a wire harness that spans between a rotating device and a fixed body. Is possible.

In the grommet of the present invention, the electric wire immediately after being pulled out from the laterally connected connector that is engaged with the resin inner to be assembled to the grommet main body is taped and fixed to the electric wire fixing piece protruding from the resin inner, and the resin The inner is fixed to the periphery of a through hole provided in the door or body panel. Therefore, transmission of the tension applied to the wire harness during the opening / closing operation of the door can be cut off at the position of the wire fixing piece, and it is possible to prevent sideways tension from being applied to the terminal of the electric wire terminal locked in the side connector. It is possible to prevent the terminal from being deformed.

It is a schematic perspective view of the rear part side of the motor vehicle provided with the back door which mounts the grommet of embodiment of this invention. The grommet of embodiment is shown, (A) is a perspective view, (B) is sectional drawing. (A) is a principal part expanded sectional view of the said grommet, (B) is a principal part expanded sectional view which shows the state which inserted the wire harness in the said grommet and attached the connector. The resin inner assembled | attached to a grommet is shown, (A) is a perspective view, (B) is the BB sectional drawing of (A). It is sectional drawing which shows the state which inserts a wire harness in the said grommet and attaches to a vehicle. It is sectional drawing of a prior art example. It is explanatory drawing which shows the problem of a prior art example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the grommet 1 according to the embodiment is mounted on a wire harness 10 that is routed between a back door 50 and a vehicle body 55 of an automobile.

The grommet 1 includes a grommet body 2 made of rubber or elastomer, and a resin inner 3 that is fitted and fixed to one end side of the grommet body 2. As shown in FIG. 2, the grommet main body 2 is connected to the

cylindrical tube

5b and 5c, which are bent in opposite L-shapes at both ends of the bellows tube 5a, and the

cylindrical tubes

5b and 5c, respectively. The large-diameter

cylindrical portions

6 and 7 having an elliptical cross section are provided, and a continuous hollow portion is used as a wire harness insertion path 8. The bellows tube 5a and the

cylindrical tubes

5b and 5c of the connecting tube portion 5 are thinner than the large-

diameter tube portions

6 and 7 at both ends. Moreover, the wire harness insertion path 8 of the grommet 1 is inserted in a state of being separated without binding the plurality of electric wires 10 w of the wire harness 10.

As shown in FIGS. 2B and 5, an annular vehicle body locking groove 6 a is provided on the outer periphery of one large-diameter cylindrical portion 6 of the grommet body 2, and a through hole 55 h provided in the vehicle body panel 55 </ b> P of the vehicle body 55 is provided. It is supposed to be locked to the periphery.
On the other hand, the resin inner 3 is fitted into the other large-diameter cylindrical portion 7 of the grommet body 2, and the locking claw 13 provided on the resin inner 3 is attached to the periphery of the through hole 50 h provided in the door panel 50 </ b> P of the back door 50. It is supposed to be locked.

A laterally extending connector 20 connected to the end of the wire harness 10 that passes through the grommet 1 is fitted and fixed in the resin inner 3, and the wire 10 w of the wire harness 10 is connected from the resin inner 3 to the connecting cylinder portion 5 side. The wire fixing piece 11 projecting from is fixed by being wound with an adhesive tape 12. Specifically, the terminal 10t that is crimp-connected to the terminal of the electric wire 10w is inserted and locked in the terminal accommodating chamber in the connector 20, and the electric wire 10w that comes out of the terminal accommodating chamber is wound around the electric wire fixing piece 11 with the adhesive tape 12 and fixed. is doing. As shown in FIG. 5, the lateral connector 20 is fitted into a standby connector 60 fixed facing the through hole 55h of the panel 55P of the back door 50, and is routed in the back door to which the standby connector 60 is connected. The wire harness W / H is connected.

As shown in FIGS. 3 and 4, the resin inner 3 is provided with locking claws 13 at three locations spaced in the circumferential direction on a cylindrical portion 3 a fitted inside the large-diameter cylindrical portion 7 of the grommet body 2, A flange portion 3b is projected from the outer periphery of one end of the tube portion 3a, and a connector locking piece 14 is provided so as to protrude from the inner surface of the tube portion 3a to the opening of the tube portion. A locking claw (not shown) provided on the outer surface of the connector 20 is locked in a locking hole 14 a provided in the connector locking piece 14 to lock the connector 20 in the resin inner 3. . When the resin inner 3 is mounted in the large-diameter cylindrical portion 7 of the grommet body 2, the flange portion 3 b is disposed and assembled in a concave accommodating portion 7 f provided at the back end of the large-diameter cylindrical portion 7. A seal lip 7r that abuts on the periphery of the through hole 55h of the back door panel is provided in an annular shape from the outer surface surrounding the housing portion 7f.

Further, the L-shaped wire fixing piece 11 projects from the resin inner 3 from a part of the outer periphery of the flange portion 3b. The L-shape of the wire fixing piece 11 follows the shape in which the large-diameter cylindrical portion 7 is bent into an L-shape from the cylindrical tube 5c of the grommet main body 2, and the transverse body portion 11a of the wire fixing piece 11 has a circular arc shape in cross section. It is made to fit along the inner peripheral surface of the cylindrical tube 5c. Further, a projection 11b is provided from the outer peripheral surface of the projecting end of the lateral body portion 11a. The portion of the grommet body 2 where the cylindrical tube 11 is in contact with the protrusion 11b is pushed outward by the protrusion 11b to form a protrusion (P).

Next, a method for attaching the wire harness 10 to the grommet 1 will be described. First, the lateral connector 20 connected to the end of the wire harness 10 is inserted into the grommet main body 2 from the large diameter cylindrical portion 6 and pulled out to the large diameter cylindrical portion 7 side through the wire harness insertion path 8. At this time, the resin inner 3 is not assembled in the large diameter cylindrical portion 7.

The connector 20 pulled out from the large-diameter cylindrical portion 7 is covered with the resin inner 3, the connector 20 is disposed in the cylindrical portion 10 a of the resin inner 3, and a locking claw ( (Not shown) is inserted and locked. In this locked state, the electric wire 10w of the wire harness 10 pulled out from the connector 20 is bundled along the inner surface side of the electric wire fixing piece 11 of the resin inner 3, and the adhesive tape 12 is wound around the electric wire fixing piece. 11, the electric wire 10 w of the wire harness 10 is fixed. When the adhesive tape 12 is wound, the protrusion 11b at the tip functions as a tape stopper.

Next, the resin inner 3 in which the connector 20 at the terminal of the wire harness 10 is fitted and locked and the wire harness 10 is fixed to the wire fixing piece 11 with the adhesive tape 12 is used as the large-diameter cylindrical portion 7 of the grommet body 2. The flange portion 3b is inserted and locked in the housing portion 7f.
In this state, the wire fixing piece 11 of the resin inner 3 is along the inner surface of the cylindrical tube 5 c of the grommet body 2. Therefore, as shown in FIG. 3B, the protrusion 11b provided at the tip of the wire fixing piece 11 pushes the cylindrical tube 5c on the outer peripheral side from the inside to form a protruding portion (P).

By the protruding portion (P) located on the outer surface of the cylindrical tube 5c, the fixing point between the wire harness 10 inside the grommet 1 and the resin inner 3 can be confirmed by appearance inspection and palpation inspection from the outside. Therefore, the dimension of the wire harness 10 can be guaranteed from the fixing point of the wire harness 10 inside the grommet 1. Further, it is possible to inspect whether the resin inner 3 is assembled to the grommet body 2 according to the position of the protruding portion (P), or whether the resin inner 3 is assembled with a misalignment, thereby preventing the occurrence of dimensional errors.

As described above, with the grommet 1 mounted on one end side of the wire harness 10, the wire harness 10 is routed in the routing path on the vehicle body side, and as shown in FIG. 5, the grommet 1 is inserted through the through hole 55h on the vehicle body side. Is pulled out and the annular locking groove of the large-diameter cylindrical portion 6 of the grommet 1 is locked to the periphery of the through hole 55h.

As shown in FIG. 5, the standby connector 60 that mates with the connector 20 fixed to the resin inner 3 mounted in the large-diameter cylindrical portion 7 on the other end side of the grommet 1 is a through hole in the panel 50 </ b> P of the back door 50. It is fixed beforehand facing 50h. Therefore, when the cylindrical portion 3a of the resin inner 3 of the grommet 1 is inserted into the through hole 50h and the locking claw 13 is locked to the inner peripheral edge of the through hole 50h, the connector 20 is fitted into the standby connector 60.

In the grommet 1 having the above-described configuration, the electric wire 10w that is pulled out from the connector 20 is wound around and fixed to the electric wire fixing piece 11 protruding from the resin inner 3 with the adhesive tape 12, and the resin inner 3 is penetrated through the back door panel 50P. It is fixed to the periphery of the hole 50h. Therefore, transmission of the tension applied to the wire harness 10 during the opening / closing operation of the back door can be blocked by the electric wire fixing piece 11 fixed by winding with tape. As a result, it is possible to prevent the terminal 10t at the end of the electric wire 10w locked in the connector 20 from being tensioned in the lateral direction and prevent the terminal 10t from being deformed.

Further, as described above, a portion (P) protruding from the outer surface of the cylindrical tube 5c of the grommet body 2 can be formed by the protrusion 11b at the tip of the wire fixing piece 11 of the resin inner 3 inside the grommet 1. With this protruding portion (P), the fixing point between the wire harness 10 inside the grommet 1 and the resin inner 3 can be confirmed from the outside, and the dimensions of the wire harness 10 can be guaranteed from the fixing point of the wire harness 10 inside the grommet. Moreover, the positional deviation of the resin inner 3 with respect to the grommet body 2 can also be found, and the occurrence of dimensional errors can be prevented.

The present invention is not limited to the above-described embodiment, and can be changed without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Grommet 2 Grommet main body 3 Resin inner 5 Connection cylinder part

5a Bellows tube

5b,

5c Cylindrical tube

6, 7 Large diameter cylinder part,
DESCRIPTION OF SYMBOLS 10 Wire harness 10w Electric wire 11 Electric wire fixing piece 11b Protrusion 12 Adhesive tape 50 Back door 50h Through-hole 55 Car body 55h Through-hole 60 Standby connector

Claims

A grommet that is externally mounted on a wire harness that spans between a vehicle body and a door, and that attaches large-diameter cylindrical portions at both ends of a connecting cylindrical portion to through holes provided in the vehicle body and the door, respectively.
A resin inner with a locking claw protruding from the one end side of the large-diameter cylindrical portion is fitted inside, and a lateral connector connected to the end of the wire harness is fixed inside the resin inner and pulled out from the connector. The grommet is characterized in that an electric wire fixing piece for fixing the wire harness to be taped is bent in an L shape from the inner end of the resin inner to the connecting tube portion side.
The wire fixing piece has an arc shape that follows the shape of the connecting tube portion, and a protrusion is provided from the outer periphery of the tip of the wire fixing piece, and the portion of the connecting tube portion that contacts the protrusion is pushed outward to protrude. The grommet according to claim 1, which is configured.
It is attached to the inside of the resin inner in a state in which the wire harness that extends between the back door and the vehicle body of the automobile is sheathed, and the locking claw provided in the resin inner is locked in the through hole provided in the back door panel. The grommet according to claim 1 or 2, wherein the laterally extending connector is fitted to a standby connector that faces and is fixed to the through hole.