JP2016157574A - Grommet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grommet which can be smoothly engaged to an opening and excellent in working property in attachment, even when a connection position of a tube is eccentric to an engagement part.SOLUTION: A grommet 1 comprises: a flat cylindrical-shaped body side engagement part 2 which is engaged to a first opening formed on a vehicle body; a flat cylindrical-shaped door side engagement part 3 which is engaged to a second opening formed on a door; and a tube 4 for connecting the body side engagement part 2 and the door side engagement part 3. The tube 4 is connected to the door side engagement part 3 at an eccentric position, and at an eccentric position which is opposite to the connection position of the tube 4 on the door side engagement part 3, a grip piece 18 which is parallel to the connection direction of the tube 4 is provided in a projecting state.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a grommet that is attached across two attached portions such as a vehicle main body and a door and protects a wire harness routed between both attached portions.

  When an automobile wire harness is routed through an opening provided in a vehicle main body or the like, the wire harness is protected by fitting a rubber-made cylindrical grommet into the opening. In particular, when a wire harness is routed between a vehicle body and a door, as disclosed in Patent Document 1, a door-side fitting portion fitted on the door side and a vehicle body side are fitted. An integral grommet in which the body side fitting portion to be joined is connected with a bellows-like tube is used. When attaching this grommet, after fitting the body side fitting part and the tube from the inside of the door to the opening part on the door side and fitting the door side fitting part from the inside side to the opening part, The procedure is performed by fitting the joint portion into the opening on the vehicle body side.

JP-A-9-139132

In the above-mentioned integrated grommet, the tube is generally connected to the center of the door side fitting part and the body side fitting part, but the tube connection is required to improve the bending performance of the wire harness. There is a case where the position is intentionally decentered from the center of the fitting portion.
However, if the connection position of the tube is eccentric in the door-side fitting part, pulling the tube passed through the door-side opening and fitting the door-side fitting part into the opening causes the tube connection side to be The door-side fitting portion may be inclined or deformed by being pulled first, and may not be smoothly fitted into the opening portion and may be reworked, which may be troublesome.

  Therefore, the present invention aims to provide a grommet that can be smoothly fitted to the opening even when the tube connection position is eccentric with respect to the fitting portion, and that has excellent workability for mounting. is there.

In order to achieve the above object, the invention described in claim 1 is characterized in that a cylindrical first fitting portion fitted into a first opening formed in one attached portion and the other covered portion. Including a cylindrical second fitting portion fitted in a second opening formed in the attachment portion, and a tube connecting the first fitting portion and the second fitting portion. A grommet for connecting a tube to at least one of the first fitting portion and the second fitting portion at an eccentric position, and at the opposite side of the tube connecting position in the at least one fitting portion. A gripping part parallel to the tube connecting direction is projected at an eccentric position.
According to a second aspect of the present invention, in the configuration of the first aspect, the at least one fitting portion has an oval shape as a whole, a tube is connected to one side in the major axis direction, and a gripping portion is disposed on the other side. Is projected.

According to the first aspect of the present invention, the grip portion is provided together with the tube even if the connection position of the tube is eccentric with respect to the fitting portion by providing the grip portion on the fitting portion where the tube is connected at the eccentric position. By pulling, the fitting portion can be smoothly fitted into the opening portion without being inclined or deformed. Therefore, the workability related to the mounting is excellent.
According to the second aspect of the present invention, in addition to the effect of the first aspect, the tube is connected to one side in the major axis direction of the oval fitting part, and the gripping part protrudes from the other side. Thereby, it can arrange | position in the position where a holding part can be pulled with good balance with a tube.

It is a perspective view from the body side fitting part side upper direction of a grommet. It is a perspective view from the body side fitting part side lower side of a grommet. It is explanatory drawing of a grommet, (A) is a front surface, (B) is a right side surface, (C) is a left side surface, (D) is a plane, (E) shows a bottom surface, respectively. (A)-(D) are explanatory drawings which show the attachment procedure of a grommet.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 are perspective views showing an example of a grommet, and FIG. 3 is an explanatory view. The grommet 1 includes a vehicle body serving as one attached portion and a door (such as a side door or a back) serving as the other attached portion. It is attached between the door). Here, the body-side fitting portion 2 as a first fitting portion to be fitted into the first opening on the vehicle body side, and the second fitting to be fitted into the second opening on the door side. It is an integrally molded product made of rubber comprising a door side fitting part 3 as a part and a tube 4 connecting the body side fitting part 2 and the door side fitting part 3.

  The body-side fitting portion 2 is a flat cylinder in which a taper portion 6 that protrudes in a tapered shape and has a flat tip at the outer side from the outer frame 5 having an oval shape toward the door-side fitting portion 3 side. Inside the frame 5, an outer opening 7 having the same shape is formed substantially entirely, and an inner connector mounting portion 8 (not shown) is formed in the outer opening 7. On the flat surface of the tapered portion 6 of the body-side fitting portion 2, an inner opening 9 having a small diameter is formed at an eccentric position shifted to one side in the long axis direction, and one end of the tube 4 is connected to the inner opening 9. Yes. A fitting groove 10 is formed on the outer periphery of the outer frame 5 over the entire periphery.

  The door-side fitting portion 3 is also a flat tube that is continuously provided with a tapered portion 12 that protrudes from the outer frame 11 having an oval shape toward the body-side fitting portion 2 and has a flat tip. Inside the frame 11, an outer opening 13 having the same shape is formed almost entirely. On the flat surface of the taper portion 12, an inner opening 14 having a small diameter is formed at an eccentric position shifted to one side in the major axis direction. The other end of the tube 4 is connected to the opening 14. However, the eccentric position of the inner opening 14 is opposite to the eccentric position of the inner opening 9 in the body side fitting portion 2, and in a front view with the tube 4 in the left-right direction, FIG. As shown, the body-side fitting portion 2 and the door-side fitting portion 3 are offset from each other in the upside down direction with the tube 4 interposed therebetween.

Further, a fitting groove 15 is formed on the outer periphery of the outer frame 11 in the door-side fitting portion 3, and a cylindrical rib 16 that coaxially surrounds the inner opening 14 on the inner surface of the tapered portion 12. And the grid-like linear rib 17 which connects the cylindrical rib 16 and the inner periphery of the outer frame 11 is formed.
Then, on the flat surface of the tapered portion 12 of the door side fitting portion 3, a strip-like gripping piece 18 as a gripping portion is provided in parallel with the tube 4 at an eccentric position opposite to the inner opening 14. ing. At the tip of the gripping piece 18, a return portion 19 that is bent to the opposite side to the tube 4 side is formed.

  The tube 4 is formed with a bellows on the whole and has flexibility, and the end of the connection side to the door-side fitting portion 3 has a tapered shape that gradually expands as the door-side fitting portion 3 is approached. ing. Therefore, the inner opening 14 of the door-side fitting portion 3 is formed with a larger diameter than the inner opening 9 of the body-side fitting portion 2.

As shown in FIG. 4, the grommet 1 configured as described above straddles the oval first opening 21 of the vehicle body 20 and the oval second opening 23 of the door 22. In the state where the wire harness W is passed through the grommet 1, the body side fitting portion 2 and the tube 4 are first attached to the second opening 23 on the door 22 side, as shown in FIG. It penetrates with the wire harness W.
Next, the door-side fitting portion 3 is fitted into the second opening 23. At this time, the tube 4 is pulled from the outside to move the door-side fitting portion 3 to the second opening 23. There is a risk of tilting.

  However, as indicated by an arrow in FIG. 5B, if the gripping piece 18 is gripped with the tube 4 with one hand or both hands and the tube 4 and the gripping piece 18 are pulled simultaneously, the door side fitting portion 3 is not inclined or deformed with respect to the tube 4 because both ends in the major axis direction are pulled simultaneously. Therefore, as shown in FIG. 5C, the fitting groove 15 can be fitted into the second opening 23 by moving the door side fitting portion 3 while maintaining the orthogonal posture with the tube 4. . Since the return piece 19 is provided in the gripping piece 18, it can be securely gripped without a hand slipping.

  By using the gripping piece 18 in this manner, the fitting of the door side fitting portion 3 to the second opening 23 is smoothly performed. Finally, as shown in FIG. 4D, when the body side fitting portion 2 is pushed into the first opening 21 of the vehicle body 20 and the fitting groove 10 is fitted, the attachment of the grommet 1 is completed. The wire harness W is routed from the vehicle body 20 to the inside of the door 22 while being protected by the grommet 1.

  Thus, according to the grommet 1 of the said form, while connecting the tube 4 with the door side fitting part 3 in an eccentric position, the eccentric position on the opposite side to the connection position of the tube 4 in the door side fitting part 3 is provided. In addition, by providing the gripping piece 18 parallel to the connection direction of the tube 4, even if the connection position of the tube 4 is eccentric with respect to the door-side fitting portion 3, the door-side fitting portion 3 can be tilted. The second opening 23 can be smoothly fitted without being deformed. Therefore, the workability related to the mounting is excellent.

  In particular, here, since the tube 4 is connected to one side in the long axis direction of the oval-shaped door-side fitting portion 3 and the gripping piece 18 is projected from the other side, the gripping piece 18 is attached together with the tube 4. It can be arranged at a position where it can be pulled in a balanced manner.

Note that the shape of the gripping portion is not limited to the strip-shaped gripping piece as in the above embodiment, and a through hole or hook for increasing the width or length, increasing the tip, or hooking a finger is formed. If it can be pulled simultaneously with the tube, it can be appropriately changed. It is also possible to project a plurality of gripping portions. Moreover, in the said form, although the holding part is provided only in the door side fitting part, it is possible to provide a holding part also in a body side fitting part depending on the attachment form.
Furthermore, the shape of the fitting portion is not limited to the oval shape as long as it is possible to project the grip portion on the opposite side to the connection at the eccentric position of the tube, such as an elliptical shape, a circular shape, or a rectangular shape. The tube is not limited to a bellows shape as long as it has flexibility.

In addition, the attached portion to which the grommet is attached is not limited to the vehicle main body and the door, and may be between other attached portions such as the vehicle main body and the trunk.
The grommet does not need to be an integrally molded product. For example, the tube is made of rubber and the fitting portions at both ends are made of resin and joined separately, or the tube and one fitting portion are made of rubber. The present invention can be applied even if the fitting portion is made of resin or the like.

  1 ·· Grommet 2 ·· Body side fitting part 3 ·· Door side fitting part 4 ·· Tube 5,5 ·· Outer frame 6, 12 ·· Tapered part 7, 13 ·· Outside Opening, 9, 14, ... Inside opening, 10, 15, ... Fitting groove, 18 ... Grasping piece, 19 ... Return part, 20 ... Vehicle body, 21 ... First opening, 22 ... Door 23 .. Second opening, W. Wire harness.

Claims (2)

A cylindrical first fitting portion fitted into a first opening formed in one attached portion;
A cylindrical second fitting portion that is fitted into a second opening formed in the other attached portion;
A grommet comprising a tube connecting the first fitting portion and the second fitting portion,
The tube is connected to at least one of the first fitting portion and the second fitting portion at an eccentric position, and the eccentricity of the at least one fitting portion is opposite to the connection position of the tube. A grommet characterized in that a grip portion parallel to the connecting direction of the tube is provided at a position.   The said at least one fitting part is an oval shape as a whole, The said tube is connected to the one side of a major axis direction, The said holding part protrudes in the other side, It is characterized by the above-mentioned. The grommet described.

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