Grommet device and wire harness

Abstract

To provide a grommet device which enables improvement of workability during manufacturing of a wire harness, and to provide a wire harness.SOLUTION: A grommet device 13 includes: a bracket 20 attached to a vehicle body panel 10 and having a plurality of through holes 22 which penetrate through the bracket 20 in a first direction X intersecting with a virtual plane P; a plurality of cylindrical grommets 30 which are respectively inserted into the plurality of through holes 22; and a seal member 40 which protrudes from the bracket 20 in the first direction X intersecting with the virtual plane P and surrounds the plurality of grommets 30. The plurality of grommets 30 are detachably attached to the respective through holes 22 in a manner that gaps are not formed therebetween.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a grommet device and a wire harness. [Background technology]

[0002] Patent Document 1 discloses a grommet used in a wire harness. This grommet includes an elastic grommet body and a hard cover. The grommet body includes a plurality of cylindrical portions through which electric wires are inserted, and a flange portion that extends annularly outside the plurality of cylindrical portions. The cylindrical portions and the flange portion are integrally formed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-173139 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, when manufacturing a wire harness having such a grommet, a worker inserts a plurality of electric wires into a plurality of cylindrical portions that are integrally provided via flanges. Then, the worker attaches the plurality of electric wires to a plurality of connectors, respectively. Therefore, when attaching a connector to one electric wire, the worker needs to handle the other electric wires together. This may reduce the workability when manufacturing the wire harness.

[0005] An object of the present disclosure is to provide a grommet device and a wire harness that can improve workability when manufacturing the wire harness. [Means for solving the problem]

[0006] The grommet device disclosed herein is a grommet device that is attached to an attachment target extending along an imaginary plane, and comprises: a bracket that is attached to the attachment target and has a plurality of through holes that penetrate in a direction intersecting the imaginary plane; a plurality of cylindrical grommets that are inserted into each of the through holes; and a sealing member that protrudes from the bracket toward the attachment target in a direction intersecting the imaginary plane and surrounds the multiple grommets, and the multiple grommets are removably attached to each of the through holes with no gaps.

[0007] A wire harness according to the present disclosure includes the grommet device and a plurality of electric wires that are inserted into the plurality of grommets, respectively. Effect of the Invention

[0008] According to the present disclosure, the workability in manufacturing a wire harness can be improved. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a cross-sectional view showing an embodiment of a grommet device attached to a vehicle body panel. [Diagram 2] FIG. 2 is a perspective view showing the grommet device. [Diagram 3] FIG. 3 is an exploded perspective view showing the grommet device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] [Description of the embodiments of the present disclosure] First, the embodiments of the present disclosure will be listed and described. The grommet device of the present disclosure is [1] A grommet device to be attached to an attachment target extending along an imaginary plane, comprising: a bracket attached to the attachment target and having a plurality of through holes penetrating in a direction intersecting the imaginary plane; a plurality of cylindrical grommets inserted into the plurality of through holes, respectively; and a sealing member protruding from the bracket toward the attachment target in a direction intersecting the imaginary plane and surrounding the plurality of grommets, wherein the plurality of grommets are removably attached to each of the through holes with no gaps.

[0011] According to this configuration, it is possible to prevent foreign matter from entering the inside of the mounting object through the gap between the grommet and the through hole. Also, by attaching the bracket to the mounting object with the sealing member pressed against the mounting object, the gap between the bracket and the mounting object is sealed. This makes it possible to prevent foreign matter from entering the inside of the mounting object through the gap between the bracket and the mounting object.

[0012] According to the above-described configuration, the grommet is configured as a separate body from the bracket, so that even after the electric wire is inserted into the grommet, the worker can route the electric wire independently of other electric wires.

[0013] Therefore, the workability in manufacturing the wire harness can be improved. [2] The grommet has a cylindrical portion and a flange portion protruding outward from the cylindrical portion, and it is preferable that the outer surface of the flange portion is provided with a groove portion into which the edge of the through hole is fitted.

[0014] According to this configuration, the edge of the through hole of the bracket is fitted into a groove provided on the outer peripheral surface of the flange, so that the grommet can be easily positioned in the axial direction relative to the bracket.

[0015] [3] It is preferable that the cylindrical portion has a bellows structure. According to this configuration, the cylindrical portion can be easily deformed along the wiring path of the electric wire. [4] It is preferable that the multiple grommets have the same shape.

[0016] According to this configuration, the number of types of grommets that make up the grommet device is reduced, which makes it easier to manage the parts. The wire harness of the present disclosure includes: [5] The device includes the grommet device and a plurality of electric wires that are respectively inserted into the plurality of grommets.

[0017] According to this configuration, it is possible to achieve effects similar to those of the grommet device described above. [Details of the embodiment of the present disclosure] Specific examples of the grommet device and wire harness of the present disclosure will be described below with reference to the drawings. In each drawing, for convenience of explanation, some of the configuration may be exaggerated or simplified. Furthermore, the dimensional ratio of each part may differ between drawings. Note that the present disclosure is not limited to these examples, but is indicated by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. In this specification, "orthogonal" does not only mean strictly orthogonal, but also includes roughly orthogonal within the scope of the effect of this embodiment.

[0018] <Basic configuration of wire harness 50> 1, a vehicle includes a vehicle body panel 10 that separates the interior and exterior of the vehicle. The vehicle body panel 10 is disposed, for example, in an engine room or under the floor of the vehicle, and is a panel that separates the interior and exterior of the vehicle, and extends along an imaginary plane P. The vehicle body panel 10 corresponds to the mounting target described in [Description of the embodiment of the present disclosure].

[0019] In the following description, the direction perpendicular to the imaginary plane P (the vertical direction in the figure) is referred to as a first direction X. The vehicle body panel 10 is provided with an insertion hole 11 penetrating the vehicle body panel 10 in a first direction X. A wire harness 50 is inserted through the insertion hole 11.

[0020] The wire harness 50 includes a plurality of electric wires 12 (three in this embodiment) and a grommet device 13. Connectors (not shown) are attached to both ends of the electric wire 12. The electric wire 12 electrically connects devices such as an inverter and a motor (both not shown) mounted on a vehicle, for example.

[0021] <Grommet device 13> As shown in FIG. 1, the grommet device 13 provides a seal between a portion constituting an insertion hole 11 in a vehicle body panel 10 and an electric wire 12.

[0022] As shown in FIGS. 2 and 3, the grommet device 13 includes a bracket 20, a plurality of (three in this embodiment) cylindrical grommets 30, and a seal member . <Bracket 20> As shown in FIGS. 1 to 3, the bracket 20 has a disk-shaped main body portion 21 and two fixing portions 24 extending from the main body portion 21.

[0023] 3, the main body 21 has a plurality of through holes 22 and a plurality of transparent holes 23. In this embodiment, three through holes 22 are provided, and six transparent holes 23 are provided.

[0024] The through holes 22 penetrate the main body 21 in the first direction X. The three through holes 22 are arranged at intervals from one another. The through holes 23 penetrate the main body 21 in the first direction X. The through holes 23 are located on the outer periphery side of the main body 21 relative to the through holes 22. The six through holes 23 are provided along the outer periphery of the main body 21 at intervals.

[0025] 1, the two fixing portions 24 each protrude from the main body portion 21 toward the outside in the radial direction of the main body portion 21. The fixing portion 24 has a fastening hole 25 penetrating therethrough in the first direction X.

[0026] The bracket 20 may be made of a metal material such as stainless steel or an aluminum alloy. <Grommet 30> As shown in FIGS. 1 to 3, the grommet 30 has a tubular portion 31 and a flange portion 34 that is continuous with the base end side of the tubular portion 31 and protrudes from the tubular portion 31 to the outer periphery side.

[0027] The tube portion 31 is cylindrical. A protrusion 32 extends around the entire inner circumferential surface 31a of the tip side portion of the tubular portion 31. In this embodiment, three protrusions 32 are provided at intervals from each other in the axial direction (first direction X) of the tubular portion 31. The protrusions 32 are pressed against the outer circumferential surface 12a of the electric wire 12. As a result, the protrusions 32 seal between the electric wire 12 and the grommet 30.

[0028] The base end side portion of the cylindrical portion 31 has a bellows structure 33 . The tubular portion 31 is configured so that the opening on the tip side of the tubular portion 31 can be oriented in a direction intersecting the first direction X through flexible deformation of the bellows structure 33.

[0029] A groove 35 is provided around the entire circumference of the outer circumferential surface 34a of the flange 34. The outer diameter of the groove 35 is slightly larger than the inner diameter of the through hole 22. By fitting the edge of the insertion hole 11 into the groove 35, the grommet 30 is detachably attached to the insertion hole 11 without any gap.

[0030] A tapered portion 36 is formed in the flange portion 34 at a portion closer to the tip side than the groove portion 35. The outer diameter of the tapered portion 36 becomes smaller toward the tip side. 3, the three grommets 30 have the same shape. The tubular portion 31 and the flange portion 34 are integrally molded. The grommets 30 may be made of an elastic material such as rubber or elastomer.

[0031] <Sealing member 40> 1 to 3, the seal member 40 has an annular seal portion main body 41 and an attachment portion 43. The seal member 40 is provided separately from the bracket 20.

[0032] The inner diameter of the seal body 41 is larger than the inner diameter of the insertion hole 11 (see FIG. 1). The outer diameter of the seal body 41 is smaller than the outer diameter of the body portion 21 of the bracket 20 (see FIG. 2). 2 and 3, the seal portion main body 41 has two annular lip portions 42. The lip portions 42 protrude from one surface of the seal portion main body 41, i.e., the surface facing the vehicle body panel 10. The two lip portions 42 are provided concentrically with the seal portion main body 41.

[0033] 1 and 3, the mounting portion 43 is provided to protrude from the other surface of the seal portion main body 41, i.e., the surface facing the bracket 20. The mounting portion 43 is tapered cone-shaped. In this embodiment, six mounting portions 43 are provided at positions corresponding to the six through-holes 23, respectively. The seal portion main body 41 and the mounting portions 43 are molded integrally. The material for the seal member 40 can be, for example, an elastic material such as rubber or elastomer.

[0034] The mounting portion 43 is inserted into the through-hole 23 without leaving any gap. In this way, the seal member 40 is attached to the bracket 20. When attached to the bracket 20, the seal portion main body 41 protrudes from the bracket 20 in the first direction X. Furthermore, the seal portion main body 41 surrounds the three grommets 30 collectively.

[0035] As shown in Fig. 1, the grommet device 13 is attached to the vehicle body panel 10 by inserting the screw 90 through the hole 14 and the fastening hole 25 of the vehicle body panel 10 and screwing it into a nut 91 arranged below the fixing portion 24. At this time, the main body portion 21 of the bracket 20 covers the entire insertion hole 11 from below. Also, the lip portion 42 is pressed against the vehicle body panel 10. Note that the screw 90 may be fixed to the vehicle body panel 10 in advance, and the nut 91 may be fixed to the bracket 20 in advance. Also, both the screw 90 and the nut 91 may not be fixed in advance.

[0036] The effects of this embodiment will be described. (1) The grommet device 13 includes a bracket 20 having a plurality of through holes 22, a plurality of grommets 30 inserted into the plurality of through holes 22, and a seal member 40 surrounding the plurality of grommets 30. The plurality of grommets 30 are removably attached to the through holes 22 with no gaps between them.

[0037] This configuration makes it possible to prevent foreign matter from entering the inside of the vehicle body panel 10 through the gap between the grommet 30 and the through hole 22. Furthermore, by attaching the bracket 20 to the vehicle body panel 10 with the sealing member 40 pressed against the vehicle body panel 10, the gap between the bracket 20 and the vehicle body panel 10 is sealed. This makes it possible to prevent foreign matter from entering the inside of the vehicle body panel 10 through the gap between the bracket 20 and the vehicle body panel 10.

[0038] Moreover, according to the above configuration, the grommet 30 is configured as a separate body from the bracket 20. Therefore, even after the electric wire 12 is inserted into the grommet 30, the worker can route the electric wire 12 independently of other electric wires 12.

[0039] Therefore, the workability when manufacturing the wire harness 50 can be improved. (2) The grommet 30 has a cylindrical portion 31 and a flange portion 34 that protrudes outward from the cylindrical portion 31. An outer peripheral surface 34a of the flange portion 34 has a groove portion 35 into which the edge of the through hole 22 is fitted.

[0040] With this configuration, the edge of the through hole 22 of the bracket 20 is fitted into the groove portion 35 provided on the outer peripheral surface 34a of the flange portion 34, thereby making it easy to position the grommet 30 in the axial direction relative to the bracket 20.

[0041] Here, when grommet 30 has groove portion 35, an insertion load is generated when a portion of flange portion 34 that is on the tip side of groove portion 35 passes through through hole 22. Therefore, there is a risk that the workability when inserting grommet 30 into through hole 22 may decrease.

[0042] In this regard, according to the above configuration, since the tapered portion 36 is formed in the above portion, the above portion is inserted into the through hole 22 while gradually elastically deforming. This reduces the insertion load of the grommet 30 into the through hole 22. Therefore, even though the groove portion 35 is provided, the grommet 30 can be easily inserted into the through hole 22.

[0043] (3) The cylindrical portion 31 has a bellows structure 33 . According to this configuration, the tubular portion 31 can be easily deformed along the routing path of the electric wire 12 .

[0044] (4) The multiple grommets 30 have the same shape. According to this configuration, the number of types of grommets 30 constituting the grommet device 13 is reduced, which makes it easier to manage parts.

[0045] <Example of change> This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that there is no technical contradiction.

[0046] The number of protrusions 32 is not limited to the number exemplified in this embodiment. That is, the number of protrusions 32 may be one or two, or may be four or more. The protrusion 32 may be omitted. In this case, the inner circumferential surface 31a of the tubular portion 31 itself may be brought into contact with the electric wire 12, or a seal member separate from the grommet 30 may be provided to seal between the inner circumferential surface 31a and the electric wire 12.

[0047] The number of through holes 22 and grommets 30 is not limited to the number exemplified in this embodiment, and may be changed as appropriate depending on the number of electric wires 12 routed inside the vehicle through the insertion holes 11. The grommets 30 are not limited to those having the same shape as those exemplified in this embodiment. For example, the inner diameter of the multiple grommets 30 may be appropriately changed according to the outer diameter of the electric wires 12 to be inserted through each grommet 30.

[0048] The bellows structure 33 may be omitted. Even in this case, it is preferable that the grommet 30 itself is configured to be flexibly deformable. The tapered portion 36 of the flange 34 may be omitted.

[0049] The groove 35 of the flange 34 may be omitted. In this case, the outer circumferential surface of the flange 34 may be attached to the through hole 22 without any gap. The flange 34 may be omitted. In this case, a groove into which the edge of the through hole 22 is fitted may be provided on the outer circumferential surface of the tubular portion 31. The outer circumferential surface of the tubular portion 31 may be attached to the through hole 22 without any gap.

[0050] The seal member 40 is not limited to being molded separately from the bracket 20 as illustrated in this embodiment, but may be molded integrally with the bracket 20 by inserting the bracket 20. In this case, the attachment portion 43 can be omitted. [Explanation of symbols]

[0051] P Virtual plane X 1st direction 10 Body Panel 11 Insertion hole 12 Electric wire 12a Outer surface 13 Grommet device 14 holes 20 Bracket 21 Main body 22 Through hole 23 Through hole 24 Fixed part 25 Fastening hole 30 Grommet 31 Cylinder part 31a Inner surface 32 Protrusion 33 Bellows structure 34 Flange 34a Outer surface 35 Groove 36 Tapered section 40 Sealing material 41 Seal body 42 Lip 43 Mounting part 50 Wire Harness 90 Screw 91 Nut

Claims

1. A grommet device that is attached to an attachment object extending along an imaginary plane, a bracket attached to the attachment target, the bracket having a plurality of through holes extending in a direction intersecting the imaginary plane; A plurality of cylindrical grommets respectively inserted into the plurality of through holes; a seal member that protrudes from the bracket toward the attachment target in a direction intersecting the imaginary plane and surrounds the plurality of grommets, The plurality of grommets are removably attached to the through holes without any gaps, The bracket has a plurality of through holes, The seal member has a plurality of mounting portions protruding from a surface facing the bracket, The mounting portions are inserted into the through holes with no gap between their outer surfaces and the inner surfaces of the through holes. Grommet device.

2. The grommet has a cylindrical portion and a flange portion protruding from the cylindrical portion to an outer circumferential side, A groove into which an edge of the through hole is fitted is provided on an outer circumferential surface of the flange. The grommet device according to claim 1 .

3. The cylindrical portion has a bellows structure. The grommet device according to claim 2 .

4. The grommets have the same shape. The grommet device according to any one of claims 1 to 3.

5. The grommet device according to any one of claims 1 to 4, and a plurality of electric wires respectively inserted into the plurality of grommets. Wire harness.

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