Grommet

Abstract

To provide a grommet having a good waterproofness.SOLUTION: A grommet fixes and guides a plurality of cables inserted through an attached part by a plurality of through holes penetrating the grommet. The grommet includes: an attachment part attached to the attached part, in which one end of each of the through holes is opened to the attachment part; a main body part connected to the attachment part; and a plurality of guide parts branched from a side opposite to the attachment part of the main body part, in which each of the through holes penetrates the corresponding guide part, and the other end of each of the through holes opens to one end of the corresponding guide part away from the main body part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a waterproof cable fixing grommet. [Background technology]

[0002] Cables (electrical cables, mechanical cables, etc.) are often passed from one side of a mounting member, such as an automobile panel, to the other, and a cable-passing grommet must be attached to the mounting member to secure and guide the cable.

[0003] A conventional grommet has a main body and a mounting portion provided at one end of the main body for attachment to a panel of an automobile. Two through holes penetrate the grommet and open at the end face of the main body, which is integrally molded with the grommet. Summary of the Invention [Problem to be solved by the invention]

[0004] However, because the two through holes on the end face of the main body are fixed in position relative to each other, when the cables passing through the two through holes are operated to move away from each other, the two through holes are forced in the direction of moving away from each other, which makes it easy for gaps to form between the through holes and the cables.This gap makes it easy for external rainwater and the like to enter the interior of the vehicle through the grommet, resulting in the problem of water leakage.

[0005] The present invention has been made in consideration of the above problems, and an object of the present invention is to provide a grommet that has excellent waterproof properties. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the grommet of the present invention fixes and guides multiple cables inserted into an attachment portion by means of multiple through holes that pass through the grommet, and the grommet comprises an attachment portion that is attached to the attachment portion, where one end of each of the through holes opens into the attachment portion, a main body portion that is connected to the attachment portion, and multiple guide portions that branch off from the side of the main body portion opposite the attachment portion, where each of the through holes passes through a corresponding guide portion and the other end of each through hole opens into one end of the corresponding guide portion away from the main body portion.

[0007] According to this structure, the guide section branches off from the opposite side of the mounting section of the main body section, and the multiple guide sections move away from each other. As a result, when multiple cables move in different directions, each guide section moves along with the movement of the cables, and each guide section is not pulled by the movement of adjacent guide sections in different directions.As a result, in the through hole through which the cables are inserted, gaps are less likely to occur between the cables and the inner wall of the through hole, and the waterproofing is good.

[0008] Preferably, in the above-mentioned grommet, a sealing portion is provided at one end of the guide portion away from the main body portion to seal the gap between the cable and the through hole, and in the extension direction of the through hole, the portion of the guide portion that branches off from the main body portion is located closer to the mounting portion than the sealing portion.

[0009] According to the above structure, in the extension direction of the through hole, the portion of the guide section that branches off from the main body section is located closer to the mounting section than the seal section, thereby reducing the effect of the cable pulling on the seal section in the guide section and ensuring sufficient waterproofing.

[0010] In the grommet, preferably, the length of the guide portion in the extending direction of the through hole is equal to or less than the length of the main body portion.

[0011] The above structure provides good waterproofing and also ensures that the grommet can securely guide the cable.

[0012] In the grommet, preferably, the distance between the guide portions in a direction perpendicular to the extending direction of the through hole is 1 / 5 to 1 / 4 of the length of the main body portion.

[0013] The above structure provides good waterproofing and also ensures that the grommet can securely guide the cable.

[0014] In the grommet described above, preferably, the distances between the plurality of guide portions gradually increase in a direction in which the plurality of guide portions branch off from the main body portion.

[0015] The above structure provides good waterproofing and also ensures that the grommet can securely guide the cable.

[0016] Preferably, the grommet is provided with two guide portions.

[0017] In the grommet, the guide portion, the main body portion and the mounting portion are preferably integrally formed from a rubber material.

[0018] According to the above structure, the guide portion, main body portion, and mounting portion are made of a single piece of rubber material, so the guide portions, which are separated from each other, are more likely to move as the cable moves, thereby better ensuring waterproofing.

[0019] In the grommet, preferably, the sealing portion is formed by protruding an inner surface of the through hole radially inward of the through hole.

[0020] According to the above structure, the seal portion can be formed with a simple structure. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a perspective view of a grommet according to a preferred embodiment of the present invention; [Figure 2] 3 is a schematic cross-sectional view of the grommet cut along a plane passing through the axes of two through holes. FIG. [Figure 3] 1A and 1B are schematic side views for explaining the groove structure of a grommet according to a preferred embodiment, where FIG. 1A corresponds to a groove structure with one example of dimensions, and FIG. 1B corresponds to a groove structure with another example of dimensions. [Figure 4] FIG. 10 is a plan view of a grommet according to a modified example. [Figure 5] FIG. 10 is a plan view of a grommet according to another modified example. DETAILED DESCRIPTION OF THE INVENTION

[0022] A grommet 1 according to a preferred embodiment of the present invention will now be described with reference to Figures 1 to 5. Note that the directions such as "upper," "lower," "left," and "right" used in the following description and drawings are used for the convenience of explanation and do not limit the directions when the grommet is actually used.

[0023] The grommet 1 of the present invention secures and guides a plurality of cables 7 inserted into a mounting portion by a plurality of through holes 5 that pass through the grommet 1. The mounting portion is, for example, a bracket, a metal plate, or a panel, and more specifically, in this embodiment, the mounting portion is a panel provided on a vehicle door.

[0024] 1 to 3, grommet 1 includes, from bottom to top, an attachment portion 10, a main body portion 20, and two guide portions 30. The two guide portions 30, the main body portion 20, and the attachment portion 10 are made of a rubber material and are integrally molded.

[0025] The mounting portion 10 is attached to the mounting base, and one end of each through hole 5 opens into the mounting portion 10. The mounting portion 10 includes a first skirt portion 11, a second skirt portion 12, and a locking portion 13. The first skirt portion 11 is connected to the lower end of the main body portion 20. The second skirt portion 12 is connected to the first skirt portion 11 from below. A groove-shaped locking portion 13 is formed at the connection between the first skirt portion 11 and the second skirt portion 12. The contours of the first skirt portion 11, the second skirt portion 12, and the locking portion 13 are formed to have a shape corresponding to the mounting portion 10. When the grommet 1 is attached to the mounting base, the first skirt portion 11 and the second skirt portion 12 sandwich the mounting base from both sides, locking the mounting base within the locking portion 13.

[0026] The main body 20 is connected to the mounting part 10. Specifically, the mounting part 10 is provided at one end of the main body 20 and is molded integrally with the main body 20. The main body 20 is formed in a columnar shape and is perpendicular to the bottom surface of the mounting part 10, i.e., perpendicular to the mounting surface of the mounting part 10. An operator can attach the mounting part 10 of the grommet 1 to the mounting part by holding the main body 20 in their hand and applying force to the grommet 1.

[0027] In this embodiment, two guide portions 30 are provided, but the number of guide portions 30 may be set to at least two as needed. The two guide portions 30 branch off from the side opposite the mounting portion 10 of the main body portion 20, and each through hole 5 penetrates the corresponding guide portion 30, with the other end of each through hole 5 opening at one end of the corresponding guide portion 30 remote from the main body portion 20. That is, the through hole 5 penetrates from the bottom to the top of the main body portion 20 from the mounting portion 10, then penetrates the guide portion 30 and opens at both ends of the mounting portion 10 and the guide portion 30, and the cable 7 passes through the mounting portion 10, the main body portion 20, and the guide portion 30 to be fixed to and guided in the grommet 1. Furthermore, the two guide portions 30 are spaced apart, and a groove 40 is formed between them, and the bottom of the groove 40 is portion A where the guide portion 30 branches off from the main body portion 20.

[0028] A seal portion 31 that seals the gap between the cable 7 and the through hole 5 is provided at one end of the guide portion 30 remote from the main body portion 20 (the upper end in FIGS. 2 and 3 ). The seal portion 31 is formed by protruding the inner surface of the through hole 5 radially inward of the through hole 5. In the extension direction of the through hole 5, a portion A where the guide portion 30 branches off from the main body portion 20 is located closer to the attachment portion 10 than the seal portion 31. That is, referring to FIG. 2 , the portion A where the guide portion 30 branches off from the main body portion 20 is located lower than the seal portion 31. When the cable 7 passes through the through hole 5, the seal portion 31 comes into close contact with the outer surface of the cable 7, sealing the gap between the cable 7 and the through hole 5 and preventing foreign matter such as water droplets and dust from entering the gap between the cable 7 and the through hole 5.

[0029] The dimensional structure of the grommet 1 according to the preferred embodiment will be described with reference to FIG.

[0030] In the extending direction of the through-hole 5 (that is, the vertical direction), the length L2 of the guide portion 30 is equal to or less than the length L1 of the main body portion 20.

[0031] Furthermore, in a direction perpendicular to the extension direction of the through holes 5, the distance W1 between the guide portions 30 is 1 / 5 to 1 / 4 of the length L1 of the main body portion 20. Referring to Fig. 3, in this embodiment, the two guide portions 30 branch off from portion A so that the distance between them is approximately constant, and the two through holes 5 also extend parallel to each other, with the extension direction of the through holes 5 being the up-down direction and the direction perpendicular to the extension direction of the through holes 5 being the left-right direction. The distance W1 between the guide portions 30, i.e., the width of the groove 40 in the left-right direction, is 1 / 5 to 1 / 4 of the length L1 of the main body portion 20.

[0032] In FIG. 3, the distance W1 in (a) is smaller than the distance W1 in (b), and in practice, the size of the distance W1 and the length L2 can be set appropriately depending on the specifications of the cable 7.

[0033] With the grommet 1 according to this embodiment, when two cables 7 corresponding to two guide sections 30 are operated in a direction that increases the distance between them as they move away from section A, that is, when the two cables 7 are pulled apart in a V-shape, the guide sections 30 that branch away from each other can prevent gaps from forming where the cables 7 come into contact with the guide sections 30, thereby ensuring sufficient waterproofing. Furthermore, the above-described dimension settings can also ensure sufficient fixing and guiding functions of the main section 20 to the cables 7.

[0034] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be modified as appropriate within the scope of the gist of the present invention.

[0035] For example, in the above-described embodiment, the guide portion, main body portion, and mounting portion are limited to being integrally molded rubber material, but the present invention is not limited to this, and the guide portion, main body portion, and mounting portion may be configured as separate bodies.

[0036] For example, in the above-described embodiment, two guide portions are provided, but the present invention is not limited thereto. Three or more guide portions may be provided, and accordingly, three or more through holes and three or more cables may be provided. For example, as shown in FIG. 4, three through holes are arranged in one direction and separated from each other by grooves. For example, as shown in FIG. 5, four through holes are arranged in two rows and separated from each other by grooves. However, these are merely examples, and the number and arrangement of through holes can be changed according to the actual situation of the cable.

[0037] For example, in the above embodiment, the distance W1 between the two guide parts does not change in the vertical direction, but the present invention is not limited to this, and the distance W1 between the multiple guide parts may gradually increase in the direction in which the multiple guide parts branch off from the main body part. In this case, the distance W1 can be expressed, for example, as the average value of the distance in the branching direction.

[0038] In the above-described embodiment, the seal portion is formed by protruding the inner surface of the through hole radially inward. However, the seal portion is not limited to being integral with the main body of the grommet, and may be, for example, a seal ring, a dust cover, or the like, provided separately from the grommet.

[0039] The present invention has been described above with reference to specific examples. However, the present invention is not limited to the above examples. Any design that can be obtained by a person skilled in the art by making appropriate design modifications to the above examples falls within the scope of the present invention as long as it includes the features of the present invention. [Explanation of symbols]

[0040] 1 grommet 5 through holes 7 Cable 10 Mounting part 11 First Skirt Section 12 Second Skirt Section 13 Locking part 20 Main body 30 Guide section 31 Seal part 40 grooves A Branching site

Claims

1. A grommet, A plurality of cables inserted into the mounting portion are fixed and guided by a plurality of through holes passing through the grommet, The grommet is a mounting portion to be attached to the mounted portion, wherein one end of each of the through holes opens into the mounting portion; a main body portion connected to the mounting portion; A grommet characterized by comprising: a plurality of guide portions branching off from the opposite side of the main body portion from the mounting portion, wherein each of the through holes passes through a corresponding guide portion, and the other end of each of the through holes opens into one end of the corresponding guide portion away from the main body portion.

2. The grommet described in claim 1, characterized in that a sealing portion is provided at one end of the guide portion away from the main body portion to seal the gap between the cable and the through hole, and in the extension direction of the through hole, the portion of the guide portion that branches off from the main body portion is located closer to the mounting portion than the sealing portion.

3. The grommet according to claim 2, wherein the length of the guide portion in the extending direction of the through hole is equal to or less than the length of the main body portion.

4. The grommet according to claim 3, wherein the distance between the guide portions in a direction perpendicular to the extending direction of the through hole is 1 / 5 to 1 / 4 of the length of the main body portion.

5. 2. The grommet according to claim 1, wherein the distances between the plurality of guide portions gradually increase in a direction in which the plurality of guide portions branch out from the main body portion.

6. 6. The grommet according to claim 1, wherein two of the guide portions are provided.

7. 6. The grommet according to claim 1, wherein the guide portion, the main body portion, and the mounting portion are made of a rubber material and are integrally molded.

8. The grommet according to claim 2, wherein the sealing portion is formed by protruding an inner surface of the through hole radially inward of the through hole.

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