JP2012191723A - Grommet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grommet that implements cost reduction and easy management.SOLUTION: A grommet 11 is formed in a cylindrical shape having a passage 12 for passing a wire harness W and configured to surround the wire harness W passed through the passage 12. A connecting cylindrical part 21 disposed along and connected to a surface of a connection part 32 of a protector 31 for housing the wire harness W and protecting it is formed at an end portion. The connecting cylindrical part 21 is provided with a plurality of positioning marks M1, M2 indicating positions of connection to the protector 31 at an interval in an axial direction.

Description

  The present invention relates to a grommet through which a wire harness is passed.

  For example, in the harness insertion hole through which the wire harness is passed in the vehicle body panel that partitions the inside and outside of the vehicle interior of the vehicle, a grommet is fitted into the harness insertion hole, and the wire harness is passed through the grommet to ensure waterproofness. However, the wire harness is protected (see, for example, Patent Document 1).

JP 2009-207291 A

  The grommet has a cylindrical portion that extends while covering the periphery of the wire harness, and an end portion of the cylindrical portion is connected to a protector that is fixed to a vehicle frame. Thereby, a grommet covers and protects the circumference | surroundings of the wire harness between a vehicle body panel and a protector.

  By the way, the space | interval of a vehicle body panel and a protector may change with vehicle models. For this reason, when wiring a wire harness to a vehicle, it is necessary to prepare grommets of different lengths for each vehicle type, and to select and assemble the grommets corresponding to the vehicle types, which increases costs and complicates management. I was invited.

  This invention is made | formed in view of the situation mentioned above, The objective is to provide the grommet which can aim at cost reduction and easy management.

In order to achieve the above-described object, the grommet according to the present invention is characterized by the following (1) to (4).
(1) A grommet that is formed in a cylindrical shape having an insertion passage through which the wire harness is inserted and covers the periphery of the wire harness that has passed through the insertion passage.
A connecting tube portion that is disposed and connected along the surface of the connecting portion of the protector that houses and protects the wire harness is formed at the end portion,
A plurality of positioning marks indicating a connection position with the protector are provided in the connecting cylinder portion at intervals in the axial direction.
(2) In the grommet configured as described in (1) above, the positioning mark is formed of a rib protruding to the outer peripheral side in the circumferential direction.
(3) In the grommet configured as described in (1) or (2) above, the connection tube portion is provided with a display portion that displays the type of the positioning mark in the vicinity of the positioning mark.
(4) In the grommet configured as described in (2) or (3) above, the connection tube portion is formed in a tapered shape that gradually expands toward the side opposite to the connection side with the protector.

In the grommet having the configuration (1), the connecting tube portion and the connecting portion can be connected by aligning the connecting portion of the protector with any of the positioning marks corresponding to the vehicle type of the vehicle. As a result, it is not necessary to prepare grommets of different lengths for each vehicle type, and to select and assemble the grommets corresponding to the vehicle type, thereby reducing costs and facilitating management by sharing parts. it can.
In the grommet configured as described in (2) above, the positioning mark is made of a rib. Therefore, the end of the connecting portion of the protector can be easily brought into contact with the positioning mark made of this rib, thereby improving work efficiency. Can be planned. Further, the position of the positioning mark made of the rib can be easily grasped by the touch when touched. Furthermore, even when the adhesive tape or the like is wound and the grommet and the protector are connected, the outer surface of the adhesive tape is raised by the rib. Thereby, the connection position after tape winding can be grasped | ascertained easily and the grommet connected to the protector can be managed easily.
In the grommet having the configuration (3), the type of the positioning mark can be easily grasped by confirming the display on the display unit, and the workability can be improved.
In the grommet configured as described in (4) above, the connecting tube portion is formed in a tapered shape that gradually widens toward the side opposite to the side connected to the protector, so that the positioning mark on the protector side touches the surface of the connecting portion of the protector. Even if a gap is formed with respect to the outer surface of the connecting cylinder part in contact, the end of the connecting part of the protector comes into contact with the tapered outer peripheral surface of the connecting cylinder part, so that the connecting cylinder part is in a stable state. It can arrange | position in the connection part of a protector.

  ADVANTAGE OF THE INVENTION According to this invention, the grommet which can aim at cost reduction and easy management can be provided.

  The present invention has been briefly described above. Further, details of the present invention will be further clarified by reading through the modes for carrying out the invention described below with reference to the accompanying drawings.

It is a figure which shows the grommet which concerns on this embodiment, Comprising: Fig.1 (a) is a perspective view of the grommet connected to the protector, FIG.1 (b) is a perspective view of a connection location with a protector. It is a figure which shows the grommet which concerns on this embodiment, Comprising: Fig.2 (a) is a perspective view of the grommet connected to the protector, FIG.2 (b) is a perspective view of a connection location with a protector. It is sectional drawing of the grommet which concerns on this embodiment.

  Hereinafter, an example of an embodiment according to the present invention will be described with reference to the drawings.

  FIG. 1 is a view showing a grommet according to the present embodiment. FIG. 1 (a) is a perspective view of a grommet connected to a protector, FIG. 1 (b) is a perspective view of a connecting portion with the protector, and FIG. FIG. 2A is a perspective view of a grommet connected to a protector, FIG. 2B is a perspective view of a connection point with the protector, and FIG. 3 is a view showing a grommet according to the present embodiment. It is sectional drawing of the grommet which concerns on.

  As shown in FIGS. 1 to 3, the grommet 11 according to the present embodiment is integrally formed from an elastic material such as rubber, and is formed into a cylindrical shape as a whole, and the wire harness W is inserted into the grommet 11. A passage 12 is provided.

  The grommet 11 has a main body cylinder portion 13 that is fitted and attached to the harness insertion hole 2 formed in the vehicle body panel 1. The main body cylinder portion 13 is formed in a circular shape in plan view, and a flange portion 15 that is in close contact with the vehicle body panel 1 is formed on the outer periphery thereof.

  Moreover, the main body cylinder part 13 has a protective cylinder part 19 on the side opposite to the side where the body panel 1 is attached to the harness insertion hole 2. The protective cylinder portion 19 is formed in a bellows shape and has flexibility.

  A cylindrical connection tube portion 21 is provided at the end of the protection tube portion 19 opposite to the main body tube portion 13.

  Further, a cylindrical lead-out portion 23 is formed in the main body cylinder portion 13 on the side where the vehicle body panel 1 is attached to the harness insertion hole 2.

  In the grommet 11, the wire harness W is inserted through the insertion passage 12 that passes through the connection cylinder part 21, the protection cylinder part 19, the main body cylinder part 13, and the drawer part 23. And the waterproofness in the harness insertion hole 2 is ensured by fitting the main body cylinder part 13 of this grommet 11 in the harness insertion hole 2 of the vehicle body panel 1.

  Further, the connecting cylinder portion 21 of the grommet 11 is connected to the connecting portion 32 of the protector 31. Specifically, the connection cylinder part 21 is arranged along the surface of the connection part 32 of the protector 31, and the connection cylinder part 21 is connected to the connection part 32 by winding an adhesive tape around the connection part 32.

  The protector 31 is formed from, for example, a synthetic resin such as plastic, and the wire harness W is inserted through the protector 31. The protector 31 is fixed to a vehicle frame or the like. Therefore, the wire harness W inserted and accommodated in the protector 31 is supported by the vehicle frame or the like while being protected by the protector 31.

  In the grommet 11 having the above-described structure, a plurality of positioning marks M1 and M2 indicating a connection position with the protector 31 are provided on the connection cylinder portion 21 with an interval in the axial direction.

  By the way, the space | interval of the vehicle body panel 1 and the protector 31 may change with vehicle models. In such a case, generally, a grommet having a different length is prepared for each vehicle type, and a grommet corresponding to the vehicle type is selected and assembled.

  On the other hand, the grommet 11 of the present embodiment aligns the connecting cylinder portion 21 and the connecting portion 32 by aligning the edge 32a of the connecting portion 32 of the protector 31 with either of the positioning marks M1, M2 corresponding to the vehicle type. By connecting, the grommet 11 can be connected to the protector 31 in accordance with the distance between the vehicle body panel 1 and the protector 31.

  These positioning marks M1 and M2 are configured by ribs that protrude outward in the circumferential direction.

  In addition, the connecting cylinder portion 21 is provided with display portions H1 and H2 indicating the types of the positioning marks M1 and M2 in the vicinity of the positioning marks M1 and M2. These display parts H1 and H2 are composed of arrows and numbers. Based on the display of the display parts H1 and H2, the operator determines which of the positioning marks M1 and M2 the connection part 32 of the protector 31 should be aligned with. It is possible to grasp.

  Moreover, the connection cylinder part 21 is formed in the taper shape which spreads gradually toward the opposite side to the connection side with the protector 31 between the positioning marks M1 and M2.

  When connecting the grommet 11 having the above structure to the protector 31, the operator positions the edge 32a of the connecting portion 32 of the protector 31 on one of the positioning marks M1 and M2 designated according to the vehicle type. To do.

  Here, when the positioning mark M1 is designated, as shown in FIG. 1, the operator positions the edge 32a of the connecting portion 32 of the protector 31 on the positioning mark M1. At this time, the operator can easily grasp the positioning mark M1 by confirming the display of the display portions H1 and H2. Further, at the time of positioning, the operator can easily position the grommet 11 with respect to the protector 31 by bringing the edge 32a of the connecting portion 32 of the protector 31 into contact with the positioning mark M1.

  In addition, since the space between the positioning marks M1 and M2 in the connecting tube portion 21 is formed in a tapered shape that gradually spreads toward the side opposite to the connection side with the protector 31, the positioning mark M2 contacts the surface of the connecting portion 32. Even if a gap is formed between the outer surface of the connecting tube portion 21 and the surface of the connecting portion 32, the edge 32a of the connecting portion 32 contacts the tapered connecting tube portion 21 between the positioning marks M1 and M2. Therefore, the connecting cylinder portion 21 can be disposed in the connecting portion 32 in a stable state.

  When the positioning mark M2 is designated, the operator positions the edge 32a of the connecting portion 32 of the protector 31 to the positioning mark M2, as shown in FIG. At this time, the operator can easily grasp the positioning mark M2 by confirming the display of the display portions H1 and H2. In positioning, the operator can easily position the grommet 11 with respect to the protector 31 by bringing the edge 32a of the connecting portion 32 of the protector 31 into contact with the positioning mark M2.

  As described above, according to the grommet according to the present embodiment, the connecting cylinder portion 21 and the connecting portion are obtained by aligning the connecting portion 32 of the protector 31 with one of the positioning marks M1 and M2 corresponding to the vehicle type of the vehicle. 32 can be connected. As a result, it is not necessary to prepare grommets of different lengths for each vehicle type, and to select and assemble the grommets corresponding to the vehicle type, thereby reducing costs and facilitating management by sharing parts. it can.

  Further, since the positioning marks M1 and M2 are made of ribs, the positioning marks M1 and M2 made of the ribs can be easily positioned by bringing the edges 32a of the connecting portions 32 of the protector 31 into contact with each other, thereby improving work efficiency. Can be planned. Further, the positions of the positioning marks M1 and M2 made of ribs can be easily grasped by the touch when touched. Further, even when the adhesive tape or the like is wound and the grommet 11 and the protector 31 are connected, the outer surface of the adhesive tape is raised by the rib. Thereby, the connection position after tape winding can be grasped | ascertained easily and the grommet 11 connected to the protector 31 can be managed easily.

  Furthermore, by confirming the display on the display portions H1 and H2, the types of the positioning marks M1 and M2 can be easily grasped, and workability can be improved.

  In addition, since the connecting tube portion 21 is formed in a tapered shape that gradually expands toward the side opposite to the side connected to the protector 31, the positioning mark M2 on the protector 31 side contacts the surface of the connecting portion 32 of the protector 31. Even if a gap is formed with respect to the outer surface of the connecting tube portion 21, the edge 32a of the connecting portion 32 of the protector 31 comes into contact with the tapered outer peripheral surface of the connecting tube portion 21. It can arrange | position to the connection part 32 of the protector 31 in the stable state.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

DESCRIPTION OF SYMBOLS 11 Grommet 12 Insertion path 21 Connection cylinder part 31 Protector 32 Connection part 32a Edge H1, H2 Display part M1, M2 Positioning mark W Wire harness

Claims (4)

A grommet formed in a cylindrical shape having an insertion passage through which the wire harness is inserted, and covering the periphery of the wire harness that has passed through the insertion passage,
A connecting tube portion that is disposed and connected along the surface of the connecting portion of the protector that houses and protects the wire harness is formed at the end portion,
A plurality of positioning marks indicating a connection position with the protector are provided in the connecting cylinder portion at intervals in the axial direction.   The grommet according to claim 1, wherein the positioning mark is formed of a rib that protrudes toward the outer peripheral side in the circumferential direction.   3. The grommet according to claim 1, wherein a display portion for displaying a type of the positioning mark is provided in the vicinity of the positioning mark in the connection cylinder portion.   4. The grommet according to claim 2, wherein the connection cylinder portion is formed in a tapered shape that gradually expands toward a side opposite to a connection side with the protector. 5.

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