Sealing rubber plug applied to wire harness

Abstract

The utility model discloses a sealing rubber plug applied to a wire harness, which comprises a rubber plug body made of an elastic material, an annular groove is arranged on the outer wall of the rubber plug body, a through hole for a wire to insert is arranged on the rubber plug body, and a concave structure is arranged on the hole wall of the through hole. The recessed structure is designed on the hole wall of the through hole, and the sealing rubber plug has certain elastic deformation capability, so that the lead is abutted against the hole wall of the through hole after being inserted into the through hole, the through hole is in sealing contact with the wire harness, and the sealing performance is ensured; when the wire harness is inserted into the through hole, the recess is not in contact with the wire harness, so that the contact area of the wire harness and the inner wall of the through hole is reduced, the frictional resistance of the wire harness in the inner wall of the through hole is reduced, the wire harness can be conveniently inserted into the through hole, and the assembly efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of vehicle parts technology, specifically to a sealing plug used in wiring harnesses. Background Technology

[0002] In automotive lighting assembly, wiring harnesses need to connect to the lamp housing via pre-drilled circular vias in the body panels. Due to the size limitations of the wiring harness connectors, the diameter of the standard circular holes on the body panels is usually larger than the outer diameter (OD) of the wiring harness backbone. This results in a noticeable annular gap at the via after the wiring harness is assembled. Given the stringent requirements for lamp housing sealing in automotive lighting systems, this gap must be effectively sealed using specialized sealing components.

[0003] The existing rubber plugging solution has significant process defects: the structure includes through holes that mate with the main wire harness. When the rubber material comes into contact with the insulation layer (mostly PVC or XLPE material) covering the wire harness conductors, the high coefficient of friction between the two polymer materials generates significant frictional resistance during assembly, increasing assembly difficulty and affecting assembly efficiency. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes:

[0005] A sealing plug for wire harnesses includes a plug body made of elastic material, the outer wall of the plug body having an annular groove, the plug body having a through hole for inserting a wire, and the wall of the through hole having a recessed structure.

[0006] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: the recessed structure forms a wave structure on the hole wall of the through hole, and the wire is inserted into the through hole and abuts against the wave crest of the wave structure.

[0007] The technical solution adopted by one embodiment of the present invention to solve its technical problem is: the side wall of the annular groove is an inclined surface, and the outer side of the side wall is inclined towards the other side wall.

[0008] The technical solution adopted by one embodiment of this utility model to solve its technical problem is as follows: the glue plug body includes a first section and a second section connected to each other, and the first section is located on the side of the second section closer to the lamp chamber. The outer diameter of the first section is smaller than the outer diameter of the second section, and the annular groove is distributed between the first section and the second section.

[0009] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a first concave hole is provided in the middle of the glue plug body near the lamp chamber, and the through hole is provided on the periphery of the through hole.

[0010] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a second concave hole is provided in the middle of the side of the glue plug body away from the lamp chamber.

[0011] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: an annular groove is provided on the bottom wall of the second concave hole, and an annular boss matching the annular groove is provided on the body sheet metal part.

[0012] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: the cross-section of the annular groove is conical.

[0013] The beneficial effects of this utility model are as follows: This application designs a recessed structure on the wall of the through hole. Since the sealing plug itself has a certain elastic deformation capability, after the wire is inserted into the through hole, it abuts against the wall of the through hole, so that the through hole and the wire harness are in sealed contact, ensuring sealing performance. When the wire harness is inserted into the through hole, the recessed area does not contact the wire harness, reducing the contact area between the wire harness and the inner wall of the through hole, reducing the frictional resistance of the wire harness when inserted into the inner wall of the through hole, facilitating the insertion of the wire harness into the through hole, and improving assembly efficiency. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0015] Figure 1 This is a schematic diagram of the structure of the sealant plug described in the embodiment of this application;

[0016] Figure 2 This is a cross-sectional view of the sealant plug described in the embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the installation of the sealant plug described in the embodiment of this application. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0019] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Reference Figure 1-3 In this embodiment, the plug body 10 includes a plug body 10 made of elastic material. The outer wall of the plug body 10 is provided with an annular groove 20 that matches the shape of the opening on the body sheet metal part 90. The plug body 10 is provided with a through hole 30 for wire insertion, and the hole wall of the through hole 30 is provided with a recessed structure 40.

[0023] A standard circular hole is typically formed on the body sheet metal part 90. The plug body 10 is placed in the circular hole, and the hole wall is embedded in the annular groove 20 and abuts against its groove wall. The groove width of the annular groove 20 matches the thickness of the hole wall of the circular hole, so that after the hole wall of the circular hole extends into the annular groove 20, the two side groove walls of the annular groove 20 make sealing contact with the hole wall of the circular hole, thereby achieving the sealing between the plug body 10 and the circular hole, as well as the sealing between the plug body 10 and the wiring harness.

[0024] The wire harness has multiple wires, which pass through corresponding through holes 30 and extend into the lamp chamber. Each wire is sealed to the wall of the corresponding through hole 30. This application designs a recessed structure 40 on the wall of the through hole 30. Since the sealing plug itself has a certain elastic deformation capability, after the wire is inserted into the through hole 30, it abuts against the wall of the through hole 30, so that the through hole 30 and the wire harness are in sealed contact, ensuring sealing performance. When the wire harness is inserted into the through hole 30, the recessed area does not contact the wire harness, reducing the contact area between the wire harness and the inner wall of the through hole 30, reducing the frictional resistance of the wire harness when inserted into the inner wall of the through hole 30, facilitating the insertion of the wire harness into the through hole 30, and improving assembly efficiency.

[0025] Referring to the accompanying drawings, the recessed structure 40 forms a wave structure 41 on the wall of the through hole 30. The wire is inserted into the through hole 30 and abuts against the crests 411 of the wave structure 41. The wave structure 41 has periodic undulations, so that after the wire is inserted into the through hole 30, multiple points of the wire abut against the crests 411 of the wave structure 41, ensuring that multiple points of the wire are in sealing contact with the through hole 30. While ensuring the sealing performance between the through hole 30 and the wire, the periodic troughs of the wave structure 41 can effectively reduce the contact area between the wire and the hole wall.

[0026] Preferably, the sidewall of the annular groove 20 is inclined, and the outer side of the sidewall slopes towards the other sidewall. After the wall of the circular hole is embedded in the annular groove 20, the inclined sidewall of the annular groove 20 abuts against the wall of the circular hole, improving the sealing performance between the plug body 10 and the body sheet metal part 90.

[0027] The plug body 10 includes a first section 11 and a second section 12 connected to each other, with the first section 11 located on the side of the second section 12 closer to the lamp chamber. The outer diameter of the first section 11 is smaller than the outer diameter of the second section 12, and the annular groove 20 is distributed between the first section 11 and the second section 12.

[0028] The diameter of the groove wall of the annular groove 20 near the lamp chamber is smaller than the diameter of the groove wall of the annular groove 20 away from the lamp chamber. When installing the plug body 10, the end of the plug body 10 with the smaller diameter is inserted into the lamp chamber to facilitate the installation of the plug body 10. After the installation of the plug body 10 is completed, the two side walls of the annular groove 20 abut against the sheet metal parts respectively. The outer diameter of the second section 12 is larger than the outer diameter of the first section 11 to ensure the sealing performance between the plug body 10 and the sheet metal parts.

[0029] The plug body has a first recessed hole 50 in the middle of the side near the lamp chamber, and the through hole 30 is disposed around the periphery of the through hole 30. The first recessed hole 50 makes the plug body 10 more easily deformed under external force, facilitating the installation of the plug body 10.

[0030] Furthermore, the glue plug body 10 has a second recessed hole 60 in the middle of the side near the lamp chamber, which reduces the material used in the glue plug body 10.

[0031] Based on the above, the bottom wall of the second concave hole 60 is provided with an annular groove 70, and the cross-section of the annular groove 70 is conical. The body sheet metal part 90 is provided with an annular boss 80 that matches the annular groove 70.

[0032] After the plug body 10 is installed on the circular hole, the annular boss 80 extends into the annular groove 70 to position the plug body 10 on the circular hole, preventing the plug body 10 from falling off or displacing under the action of external force, thus affecting its sealing performance with the circular hole, and making the structure more stable.

[0033] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A sealant plug for wire harnesses, characterized in that, The device includes a plug body (10) made of elastic material, the outer wall of the plug body (10) is provided with an annular groove (20), the plug body (10) is provided with a through hole (30) for inserting a wire, and the hole wall of the through hole (30) is provided with a recessed structure (40).

2. The sealant plug for wire harnesses according to claim 1, characterized in that, The recessed structure (40) forms a wave structure (41) on the wall of the through hole (30), and the wire is inserted into the through hole (30) and abuts against the crest (411) of the wave structure (41).

3. The sealant plug for wire harnesses according to claim 1 or 2, characterized in that, The side wall of the annular groove (20) is inclined, and the outer side of the side wall is inclined toward the other side wall.

4. The sealant plug for wire harnesses according to claim 1 or 2, characterized in that, The plug body (10) includes a first section (11) and a second section (12) connected to each other, and the first section (11) is located on the side of the second section (12) closer to the lamp chamber. The outer diameter of the first section (11) is smaller than the outer diameter of the second section (12). The annular groove (20) is distributed between the first section (11) and the second section (12).

5. The sealant plug for wire harnesses according to claim 1 or 2, characterized in that, The plug body (10) has a first recessed hole (50) in the middle part near the lamp chamber, and the through hole (30) is arranged on the periphery of the through hole (30).

6. The sealant plug for wire harnesses according to claim 1 or 2, characterized in that, The plug body (10) has a second recess (60) in the middle of the side away from the lamp chamber.

7. The sealant plug for wire harnesses according to claim 6, characterized in that, The bottom wall of the second concave hole (60) is provided with an annular groove (70), and the vehicle body is provided with an annular boss (80) that matches the annular groove (70).

8. The sealant plug for wire harnesses according to claim 7, characterized in that, The cross-section of the annular groove (70) is conical.

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