Sealing structure between automobile body hole and wire harness

Abstract

The utility model belongs to the technical field of automobile wire harnesses, and discloses a sealing structure between an automobile body hole and a wire harness, which comprises a sealing grommet, a groove is annularly formed in the sealing grommet, the width of the bottom of the groove is larger than that of a notch, the width of the notch of the groove is smaller than the thickness of a metal plate at the position of the automobile body hole, and a via hole for the wire harness to pass through is formed in the middle of the sealing grommet. The diameter of the circle where the groove bottom is located is larger than that of the automobile body hole. The groove is formed in the sealing grommet, sealing between the groove wall at the groove opening of the groove and the metal plate is achieved through matching of the groove opening of the groove and the metal plate at the automobile body hole, sealing between the groove bottom of the groove and the inner wall of the automobile body hole is achieved through matching of the groove bottom of the groove and the automobile body hole, and therefore the double-sealing effect is achieved, the sealing effect is better, and the size is small. And materials are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile wiring harnesses, in particular to a sealing structure between an automobile body hole and a wiring harness. Background Art

[0002] The automotive wiring harness is a collection of wires that connect the various parts of the car. They transmit power and data signals through the car body. The car body usually has many different types of holes for the wiring harness to pass through and connect to different parts. Therefore, the coordination between the automotive wiring harness and the body hole is a big problem. It is necessary to ensure that the wiring harness can pass through accurately, and at the same time, it is necessary to prevent water, dust and other impurities from entering the car, which will affect the working effect and life of the wiring harness.

[0003] In the prior art, automobile manufacturers usually use seals around body holes to ensure the sealing of the holes, and the sealing method of the body holes is mostly single-part one-way sealing. In order to achieve a better sealing effect, the sealing device is often enlarged, which leads to high production costs and a thick and bulky sealing structure. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a sealing structure between a hole in an automobile body and a wiring harness.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a sealing structure between a hole in a car body and a wiring harness, comprising a sealing grommet, a groove is provided in a ring shape on the sealing grommet, the width of the bottom of the groove is greater than the width of the groove opening, the width of the groove opening is less than the sheet metal thickness at the body hole, a through hole for the wiring harness to pass through is provided in the middle of the sealing grommet, and the diameter of the circle where the bottom of the groove is located is greater than the diameter of the body hole.

[0006] By adopting the above technical scheme, a groove is opened on the sealing grommet, and the sealing between the groove wall and the sheet metal at the groove opening is achieved through the cooperation between the groove notch and the sheet metal at the body hole, and then the sealing between the groove bottom and the body hole is achieved through the cooperation between the groove bottom and the body hole, thereby achieving a double sealing effect, a better sealing effect, a smaller volume, and material saving.

[0007] Furthermore, the sealing grommet includes a support body and a sealing cover, the groove is arranged at the connection between the support body and the sealing cover, and the groove wall height of the groove on the sealing cover side is higher than the groove wall height of the groove on the support body side.

[0008] By adopting the above technical solution, the height of the groove wall on the side of the sealing cover is set to be higher than the height of the groove wall on the side of the supporting body. During installation, the sealing grommet on one end of the supporting body is inserted into the hole of the vehicle body. After the supporting body passes through, the sealing grommet is blocked by the sealing cover as a whole, so that it cannot be inserted further, thereby avoiding the sealing cover from passing through the hole of the vehicle body during installation.

[0009] Furthermore, a guide arc section for sealing with the sheet metal around the hole of the vehicle body is provided on the groove wall of the groove located on one side of the sealing cover.

[0010] By adopting the above technical solution, a guide arc section is provided on the groove wall of the groove located on one side of the sealing cover for sealing cooperation with the body sheet metal.

[0011] Furthermore, a plurality of reinforcing ribs are arranged circumferentially on the outer wall of the support body.

[0012] By adopting the above technical solution, a number of reinforcing ribs are arranged on the circumference of the outer wall of the support body to improve the structural strength of the support body.

[0013] Furthermore, a circular groove is arranged on the end surface of the sealing cover away from the support body, and a nest-shaped reinforcing rib is arranged at the bottom of the circular groove.

[0014] By adopting the above technical solution, reinforcing ribs are arranged at the bottom of the circular groove to improve the structural strength of the sealing cover.

[0015] Furthermore, the support body and the sealing cover are both provided with wire protection foam tubes at the through holes.

[0016] By adopting the above technical solution, a wire protection foam tube is arranged on the support body and the sealing cover to wrap the wire harness, thereby fixing the direction of the wire harness and protecting it.

[0017] Furthermore, a spiral groove is provided on the tube body of the wire protection foam tube.

[0018] By adopting the above technical solution, a spiral groove is provided on the tube body of the wire protection foam tube, so that the wire protection foam tube can be easily bent.

[0019] In summary, the utility model has the following beneficial effects: in the present application, a groove is opened on the sealing ring, and the sealing between the groove wall and the sheet metal at the groove opening is achieved through the cooperation between the groove notch and the sheet metal at the body hole, and then the sealing between the groove bottom and the inner wall of the body hole is achieved through the cooperation between the groove bottom and the body hole, thereby achieving a double sealing effect, a better sealing effect, a smaller volume, and material saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the utility model in the installed state;

[0021] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model;

[0022] Figure 3 yes Figure 2 A magnified image of

[0023] Figure 4 This is a schematic structural diagram of a sealing grommet according to an embodiment of the utility model;

[0024] Figure 5 It is a left side view of an embodiment of the utility model;

[0025] Figure 6 It is a right side view of an embodiment of the utility model.

[0026] In the figure: 10, sealing grommet; 11, groove; 12, through hole; 20, support body; 21, reinforcing rib; 30, sealing cover; 31, guide arc segment; 32, circular groove; 33, nested reinforcing rib; 40, wire protection foam tube; 41, spiral groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0028] like Figure 1-6 As shown, the embodiment of the present application discloses a sealing structure between a hole in a car body and a wiring harness, including a sealing grommet 10, on which a groove 11 is provided in an annular shape, the width of the bottom of the groove 11 is greater than the width of the notch, and the width of the notch of the groove 11 is less than the thickness of the sheet metal at the hole in the car body, so that the groove wall at the notch of the groove 11 respectively contacts and fits with the two sides of the sheet metal, thereby achieving a seal between the groove wall at the notch of the groove 11 and the sheet metal. The diameter of the circle where the bottom of the groove 11 is located is greater than the diameter of the hole in the car body, so that the bottom of the groove 11 contacts and fits with the inner wall of the hole in the car body, thereby achieving a seal between the bottom of the groove 11 and the inner wall of the hole in the car body, thereby achieving a double sealing effect, a better sealing effect, a smaller volume, and material saving.

[0029] Specifically, the sealing grommet 10 includes a sealing cover 30 and a support body 20. A circular groove 32 is provided on the end surface of the sealing cover 30 away from the support body 20, and a nested reinforcing rib 33 is provided at the bottom of the circular groove 32 to improve the structural strength of the sealing cover 30. The support body 20 includes a frustum block and a cylindrical support platform. A plurality of reinforcing ribs 21 are provided in the circumferential direction of the outer wall of the frustum block. One end of the reinforcing rib 21 is connected to the support platform to improve the structural strength of the support body 20.

[0030] In the specific configuration, the groove 11 is opened at the connection between the support body 20 and the sealing cover 30. The groove wall height of the groove 11 on the side of the sealing cover 30 is higher than the groove wall height on the side of the support body 20. When installing, the end of the sealing grommet 10 located on the support body 20 is inserted into the body hole. After the support body 20 passes through, it is blocked by the sealing cover 30, so that the sealing grommet 10 cannot be inserted further, avoiding the sealing cover 30 from passing through the body hole during installation. A guide arc section 31 is provided on the groove wall of the groove 11 on the side of the sealing cover 30, which is used to seal with the sheet metal around the body hole.

[0031] A through hole 12 is provided in the middle of the sealing grommet 10 for the wiring harness to pass through, and is used for laying the wiring harness. A wire protection foam tube 40 is provided at the support body 20 and the sealing cover 30 at the through hole 12, and is used to wrap the wiring harness, fix the wiring harness direction and protect it. A spiral groove 41 is provided on the body of the wire protection foam tube 40, so that the wire protection foam tube 40 can be bent easily.

[0032] The use principle of the sealing structure between the automobile body hole and the wiring harness in this embodiment is as follows: during installation, the end of the sealing grommet 10 located at the support body 20 is inserted into the body hole, and the support body 20 is deformed so that it passes through the body hole, and then is blocked by the sealing cover 30, so that the sealing grommet 10 cannot be inserted further. At this time, the sheet metal at the body hole is located in the groove 11, the shape of the support body 20 is restored, the groove wall at the notch of the groove 11 is respectively in contact with the two sides of the sheet metal, and the groove bottom of the groove 11 is in contact with the inner wall of the body hole, so as to achieve a double sealing effect, and the sealing effect is better, and then the wire protection foam tube 40 is adjusted to protect the wire harness and fix its direction.

[0033] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A sealing structure between a hole in an automobile body and a wiring harness, characterized in that: The sealing grommet (10) comprises a sealing grommet (10), wherein a groove (11) is provided in an annular shape, wherein the width of the bottom of the groove (11) is greater than the width of the groove opening, and the width of the groove opening of the groove (11) is less than the sheet metal thickness at the hole in the vehicle body, and a through hole (12) for the wiring harness to pass through is provided in the middle of the sealing grommet (10), and the diameter of the circle where the bottom of the groove (11) is located is greater than the diameter of the hole in the vehicle body.

2. The sealing structure between a hole in an automobile body and a wiring harness according to claim 1, characterized in that: The sealing grommet (10) comprises a support body (20) and a sealing cover (30), the groove (11) is arranged at the connection between the support body (20) and the sealing cover (30), and the groove wall height of the groove (11) on the side of the sealing cover (30) is higher than the groove wall height on the side of the support body (20).

3. The sealing structure between a hole in an automobile body and a wiring harness according to claim 2, characterized in that: A guide arc section (31) for sealingly cooperating with the sheet metal around the hole of the vehicle body is provided on the groove wall of the groove (11) located on one side of the sealing cover (30).

4. The sealing structure between a hole in an automobile body and a wiring harness according to claim 2, characterized in that: A plurality of reinforcing ribs (21) are arranged in the circumferential direction of the outer wall of the support body (20).

5. The sealing structure between a hole in an automobile body and a wiring harness according to claim 2, characterized in that: A circular groove (32) is provided on the end surface of the sealing cover (30) away from the support body (20), and a nest-shaped reinforcing rib (33) is provided at the bottom of the circular groove (32).

6. The sealing structure between a hole in an automobile body and a wiring harness according to claim 2, characterized in that: The support body (20) and the sealing cover (30) are both provided with a wire protection foam tube (40) at the through hole (12).

7. The sealing structure between a hole in an automobile body and a wiring harness according to claim 6, characterized in that: The wire protection foam tube (40) has a spiral groove (41) formed on its body.

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