Sealing plug and vehicle

Abstract

The invention relates to a sealing plug and a vehicle, and belongs to the technical field of automobile parts. The sealing plug comprises a sealing part and a limiting part, the sealing part is provided with a disc-shaped main body, the center of the disc-shaped main body is provided with a wire harness via hole suitable for a wire harness to penetrate through, the limiting part is provided with an annular main body and a plurality of elastic hook claws distributed around the annular main body, and the annular main body is connected with the disc-shaped main body and surrounds the wire harness via hole; the fixed end of each elastic hook claw is connected to the annular body, the free end of each elastic hook claw faces the disc-shaped body and obliquely extends away from the first axis of the annular body, and when the sealing plug is used for plugging a function hole of a metal plate, the elastic hook claws penetrate to the second side of the metal plate from the first side of the metal plate through the function hole. The free end of the elastic hook claw abuts against the second side of the metal plate, and the sealing part abuts against the first side of the metal plate. According to the invention, the sealing plug is not easy to fall off, and the installation force required for installing the sealing plug is small.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automobile parts, and in particular to a sealing plug and a vehicle. Background Art

[0002] In order to install various structural parts and meet functional requirements during the design and manufacturing process of automobiles, functional holes are generally provided, such as wiring harness holes or installation holes for electrical components. Among them, some functional holes are located on the sheet metal surface of the automobile body used to isolate the dry and wet areas. These functional holes need to be sealed with sealing plugs to achieve the required waterproof and dustproof level. At the same time, it is also necessary to prevent these sealing plugs from falling off during use. For this reason, some sealing plugs choose to increase the compression deformation between the soft rubber and the sheet metal, resulting in excessive installation force required to install the sealing plugs, making installation difficult. Summary of the invention

[0003] In view of this, the embodiment of the present disclosure provides a sealing plug and a vehicle, which can ensure that the sealing plug is not easy to fall off while reducing the installation force required to install the sealing plug. The technical solution is as follows:

[0004] In a first aspect, a sealing plug is provided, the sealing plug comprising a sealing portion and a limiting portion;

[0005] The sealing portion has a disk-shaped body, and the center of the disk-shaped body has a wire harness through hole suitable for the wire harness to pass through;

[0006] The limiting part comprises an annular body and a plurality of elastic hooks distributed around the annular body, wherein the annular body is connected to the disc-shaped body and surrounds the harness through hole, and a fixed end of each elastic hook is connected to the annular body, and a free end extends obliquely toward the disc-shaped body and away from the first axis of the annular body;

[0007] Wherein, when the sealing plug is used to seal the functional hole of the sheet metal, the elastic hook passes through the functional hole from the first side of the sheet metal to the second side of the sheet metal, the free end of the elastic hook abuts against the second side of the sheet metal, and the sealing part abuts against the first side of the sheet metal.

[0008] In a possible implementation, the sealing portion further has an annular elastic flange, which is connected to the disc-shaped body and surrounds the wiring harness through hole;

[0009] Wherein, when the sealing plug is used to seal the functional hole, the annular elastic flange is suitable for abutting against the first side of the sheet metal around the functional hole.

[0010] In a possible implementation, the limiting portion further has a plurality of axial limiting structures, and the plurality of axial limiting structures are distributed around the annular body and connected to the annular body;

[0011] Wherein, when the sealing plug is used to seal the functional hole, each of the axial limiting structures is suitable for abutting against the first side of the sheet metal along the second axial center line of the functional hole.

[0012] In a possible implementation, the limiting portion further has a plurality of radial limiting structures, and the plurality of radial limiting structures are distributed around the annular body and connected to the annular body;

[0013] Wherein, when the sealing plug is used to seal the functional hole, each of the radial limiting structures is suitable for abutting against the stop edge of the functional hole along the radial direction of the functional hole.

[0014] In a possible implementation, the limiting portion further has a plurality of first guide surfaces, the first guide surfaces are adapted to be arranged obliquely opposite to the first axis and opposite to the disc-shaped body, and the plurality of first guide surfaces are distributed around the annular body and are located on a side of the radial limiting structure away from the disc-shaped body;

[0015] Wherein, when the sealing plug is used to seal the functional hole, the maximum distance between a point on the first guide surface and the second axial centerline of the functional hole is consistent with the maximum distance between a point on the radial limiting structure and the second axial centerline of the functional hole.

[0016] In a possible implementation manner, the wire harness through hole is interference fit with the wire harness.

[0017] In one possible implementation, the wiring harness via has a mating section and a guide section, the mating section is interference fit with the wiring harness, the inner wall of the guide section is conical, the end with the smallest inner diameter of the guide section is connected to the inner diameter of the mating section, and the smallest inner diameter of the guide section matches the inner diameter of the mating section.

[0018] In a possible implementation, when the sealing plug is in a natural state, the minimum distance between each of the elastic hooks and the sealing portion along the second axis is less than the thickness of the sheet metal.

[0019] In a possible implementation, when the sealing plug is used to seal the functional hole, the plurality of elastic hooks are evenly distributed around the second axis of the functional hole.

[0020] In a second aspect, a vehicle is provided, wherein a functional hole is opened on a sheet metal of the vehicle, and the vehicle further comprises a sealing plug as described in any one of the first aspects.

[0021] In the solution disclosed in the present invention, when installing the sealing plug from the first side of the sheet metal into the functional hole of the sheet metal, first make a plurality of elastic hooks abut against the stop edge of the functional hole, and continue to apply force. Since the elastic hooks are subjected to the extrusion force from the stop edge on the side away from the first axis, the elastic hooks are forced to shrink to the side close to the axis, and then easily pass through the functional hole. After the elastic hooks completely pass through the functional hole and reach the second side of the sheet metal, the sealing part abuts against the first side of the sheet metal, and thus cannot pass through the functional hole, thereby achieving the blocking of the functional hole, and the elastic hooks return to their original state, so that the free ends of the elastic hooks abut against the second side of the sheet metal, and thus cannot pass through the functional hole in the reverse direction. Thereby, it can be ensured that the sealing plug is not easy to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 is a structural schematic diagram of a sealing plug provided by an embodiment of the present disclosure;

[0024] Figure 2 is a structural schematic diagram of a sealing portion provided by an embodiment of the present disclosure;

[0025] Figure 3 is a structural schematic diagram of a limit portion provided by an embodiment of the present disclosure;

[0026] Figure 4 It is a structural schematic diagram of a sheet metal provided by an embodiment of the present disclosure;

[0027] Figure 5 is a schematic top view of a sealing plug provided in an embodiment of the present disclosure;

[0028] Figure 6 This embodiment of the present disclosure provides a Figure 5 AA cross-sectional structure schematic diagram when the sealing plugging piece blocks the functional hole;

[0029] Figure 7 This embodiment of the present disclosure provides a Figure 5 Schematic diagram of the BB cross-sectional structure when the sealing plug seals the functional hole.

[0030] Description of Reference Numerals

[0031] 2. Sealing part; 21. Wire harness through hole; 211. Fitting section; 212. Guide section; 22. Annular elastic flange; 23. Disc-shaped body; 3. Limiting part; 31. Elastic hook; 311. Abutment surface; 312. Second guide surface; 32. Rigid limiting structure; 321. First guide surface; 322. Axial limiting structure; 323. Radial limiting structure; 33. Annular body; 34. First axis; 4. Sheet metal; 41. Stop edge; 42. Functional hole; 43. Second axis. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0033] Different parts of a passenger car body can be divided into dry areas and wet areas according to functional requirements and whether they are easily exposed to water. Dry areas are areas such as the passenger compartment and luggage compartment that are not easily exposed to water or soaked by water, while wet areas are areas outside the passenger compartment and luggage compartment that are easily exposed to water or soaked by water. Some functional holes are located on the sheet metal surface of the car body that is used to separate dry and wet areas. In order to prevent the water that may exist in the wet area from leaking into the dry area through these functional holes, these functional holes need to be sealed with sealing plugs to achieve the desired waterproof and dustproof purpose.

[0034] The present embodiment specifically relates to a sealing plug, and the structural features of the sealing plug will be introduced below.

[0035] like Figure 1 The diagram shown is a schematic diagram of the structure of the sealing plug. Figure 2 The structure diagram of the sealing part 2 is shown. Figure 3 The structure diagram of the limiting part 3 is shown. Figure 4 What is shown is a schematic diagram of the structure of the sheet metal 4, Figure 5 The figure shows a top view of the sealing plug. Figure 6 Shown is Figure 5 AA cross-sectional structure diagram of the sealing plug when the functional hole is blocked. Figure 7 Shown is Figure 5 Schematic diagram of the BB cross-sectional structure when the sealing plug seals the functional hole.

[0036] refer to Figure 1 As shown, the sealing plug includes a sealing portion 2 and a limiting portion 3. Figure 2 As shown, the sealing portion 2 has a disc-shaped body 23, and the center of the disc-shaped body 23 has a harness through hole 21 suitable for the harness 5 to pass through. Figure 3 As shown, the limiting portion 3 has an annular body 33 and a plurality of elastic hooks 31 distributed around the annular body 33. For example, the number of the elastic hooks 31 can be two, or three, or more. Figure 3The number of the elastic hooks 31 is four or more.

[0037] Continue to refer Figure 1 As shown, the first end of the annular body 33 is connected to the disc-shaped body 23 and surrounds the harness through hole 21 . For example, the radius of the annular body 33 may be greater than or equal to the radius of the harness through hole 21 .

[0038] The fixed end of each elastic hook 31 is fixedly connected to the annular body 33. For example, the fixed end of the elastic hook 31 can be as follows: Figure 1 As shown, it is connected to the second end of the annular body 33 away from the disc-shaped body 23, and can also be connected to the middle of the annular body 33. The free end of each elastic hook 31 extends obliquely toward the disc-shaped body 23 and away from the first axis 34 of the annular body 33.

[0039] Among them, when the sealing plug is used to seal Figure 4 When the functional hole 42 of the sheet metal 4 is shown, refer to Figure 6 and Figure 7 As shown, the elastic hook 31 passes through the functional hole 42 from the first side of the sheet metal 4 to the second side of the sheet metal 4, the free end of the elastic hook 31 abuts against the second side of the sheet metal 4, and the sealing part 2 abuts against the first side of the sheet metal 4, for example, the first side of the sealing part 2 abuts against the first side of the sheet metal 4.

[0040] refer to Figure 3 Combined with Figure 6 As shown, the elastic hook 31 has an inclined second guide surface 312 away from the first axis 34 and away from the sealing portion 2, and an abutment surface 311 located at the free end. The second guide surface 312 can be a plane or a curved surface. The present embodiment does not limit the form of the second guide surface 312, and it can be achieved that when the elastic hook 31 is in a natural state, the distance between the point on the second guide surface 312 close to the fixed end of the elastic hook 31 and the first axis 34 is less than or equal to the distance between the point on the second guide surface 312 close to the free end of the elastic hook 31 and the first axis 34.

[0041] For example, the shortest distance between a point on the second guide surface 312 and the second axis line 43 of the functional hole 43 is smaller than the radius of the functional hole 41 , and the farthest distance between a point on the second guide surface 312 and the second axis line 43 of the functional hole 43 is larger than the radius of the functional hole 41 .

[0042] As described above, when installing the sealing plug into the functional hole 42 of the sheet metal 4 from the first side of the sheet metal 4, first make the second guide surface 312 of each elastic hook 31 rest against the stop edge 41 of the functional hole 42, and continue to apply force. Since the second guide surface 312 of the elastic hook 31 is squeezed by the stop edge 41 on the side away from the first axis 34, the elastic hook 31 is forced to shrink to the side close to the axis, and then easily pass through the functional hole 42.

[0043] Until the elastic hook 31 completely passes through the functional hole 42 and reaches the second side of the sheet metal 4, the sealing part 2 abuts against the first side of the sheet metal 4, and thus cannot pass through the functional hole 42, thereby blocking the functional hole 42, while the elastic hook 31 returns to its original state, so that the abutting surface 311 of the free end of the elastic hook 31 abuts against the second side of the sheet metal 4, and thus cannot reversely pass through the functional hole 42. Thus, it can be ensured that the sealing plug is not easy to fall off.

[0044] In an example, the surface shape of the first side of the sealing portion 2 may be adapted to the surface of the first side of the sheet metal 4 , so that the sealing portion 2 can seal the functional hole 42 from the first side of the sheet metal 4 .

[0045] For example, the surface of the first side of the sealing part 2 may be a plane, and accordingly, the surface of the first side of the sheet metal 4 may be a plane matching the surface of the first side of the sealing part 2; for another example, the surface of the first side of the sealing part 2 may be a curved surface, and accordingly, the surface of the first side of the sheet metal 4 may be a curved surface matching the surface of the first side of the sealing part 2; for another example, the surface of the first side of the sealing part 2 may have an annular plane surrounding the harness via 21, and accordingly, the surface of the first side of the sheet metal 4 may have a curved surface matching the annular plane of the first side surface of the sealing part 2 and surrounding the functional hole 42. Thus, the sealing of the functional hole 42 can be achieved by the sealing part 2.

[0046] In one example, in order to enable the sealing portion 2 to block the functional hole 42 , the shape of the disc-shaped body 23 is adapted to the shape of the functional hole 42 , so that the projection of the disc-shaped body 23 along the second axis 43 of the functional hole 42 can cover the functional hole 42 .

[0047] In one example, the sealing portion 2 further has an annular elastic flange 22, which is connected to the disc-shaped body 23 and surrounds the harness through hole 21, wherein when the sealing plug is used to block the functional hole 42, the annular elastic flange 22 is suitable for abutting against the first side of the sheet metal 4 around the functional hole 42. For example, the annular elastic flange 22 can surround the periphery of the disc-shaped body 23 and extend in a direction close to the elastic hook 31. It should be noted that the disc-shaped body 23 and the annular elastic flange 22 can be integrally formed, or can be two independent structural parts fixed together by means of snap connection, gluing, etc.

[0048] In this way, after the elastic hook 31 completely passes through the functional hole 42 and reaches the second side of the sheet metal 4, the annular elastic flange 22 on the disc-shaped body 23 can abut against the first side surface of the sheet metal 4 around the functional hole 42. Since the annular elastic flange 22 can have a better deformation ability, the annular elastic flange 22 can fit the first side surface of the sheet metal 4, thereby improving the sealing performance of the sealing part 2 to the functional hole 42.

[0049] In one example, in order to enable the sealing portion 2 to seal the functional hole 42 , the shape of the outer edge contour of the annular elastic flange 22 is adapted to the shape of the functional hole 42 so that the projection of the outer edge of the annular elastic flange 22 along the second axial centerline 43 of the functional hole 42 is completely located outside the functional hole 42 .

[0050] It should be noted that, in the above example, the shape of the functional hole 42 can be any shape, and the projection of the disc-shaped body 23 along the second axis 43 of the functional hole 42 or the projection of the outer edge of the annular elastic flange 22 along the second axis 43 of the functional hole 42 can also be any shape, as long as the projection of the disc-shaped body 23 along the second axis 43 of the functional hole 42 can cover the functional hole 42, or the projection of the outer edge of the annular elastic flange 22 along the second axis 43 of the functional hole 42 is completely outside the functional hole 42.

[0051] For example, the shape of the functional hole 42 can be a square with a diagonal length of 2 cm, and the projection of the disc-shaped body 23 along the second axis 43 of the functional hole 42 or the projection of the outer edge of the annular elastic flange 22 along the second axis 43 of the functional hole 42 can be a circle with a radius of 1.5 cm; for another example, the shape of the functional hole 42 can be a circle with a radius of 1.5 cm, and the projection of the disc-shaped body 23 along the second axis 43 of the functional hole 42 or the projection of the outer edge of the annular elastic flange 22 along the second axis 43 of the functional hole 42 can be a square with a diagonal length of 5 cm.

[0052] In one example, the limiting portion 3 also has a plurality of axial limiting structures 322, which are distributed around the annular body 33 and connected to the annular body 33, wherein when the sealing plug is used to seal the functional hole 42, each axial limiting structure 322 is suitable for abutting against the first side of the sheet metal 4 along the second axial center line 43 of the functional hole 42.

[0053] The radial limiting structure 323 may be a first rib structure connected to the outer wall of the annular body 33, and a plurality of first rib structures are distributed around the annular body 33. When the sealing plug is used to block the functional hole 42, each second rib structure abuts against the first side of the sheet metal 4 along the second axis 43 of the functional hole 42 facing the sheet metal 4. The number of the radial limiting structures 323 may be three, or four or more.

[0054] For example, when the sealing plug is used to plug the functional hole 42, the first side surface of each second rib structure facing the sheet metal 4 is located in the same plane perpendicular to the second axis 42, and the farthest distance between a point on the first side surface and the second axis 43 of the functional hole 42 is greater than the radius of the functional hole 42. Therefore, after the elastic hook 31 completely passes through the functional hole 42 and reaches the second side of the sheet metal 4, the side surface of each second rib structure facing the sheet metal 4 will abut against the first side of the sheet metal 4 and cannot pass through the functional hole 42.

[0055] From the above, it can be seen that after the first side surface of the second rib structure abuts against the first side of the sheet metal 4, the distance between the disc-shaped main body 23 of the sealing portion 2 and the first side of the sheet metal 4 is limited, and thus the deformation occurring when the annular elastic flange 22 abuts against the first side of the sheet metal 4 is also limited, so that the deformation of the annular elastic flange 22 can be maintained within a preferred range, avoiding too little deformation to achieve a sufficient sealing effect, and at the same time avoiding too much deformation to cause a gap between the annular elastic flange 22 and the sheet metal 4, which causes the sealing to fail.

[0056] In one example, the limiting portion 3 further has a plurality of radial limiting structures 323, which are distributed around the annular body 33 and connected to the annular body 33. When the sealing plug is used to block the functional hole 42, each radial limiting structure 323 is suitable for abutting against the stop edge 41 of the functional hole 42 along the radial direction of the functional hole 42. The number of radial limiting structures 323 can be two, three, four or more.

[0057] Among them, the radial limiting structure 323 can be a second rib structure connected to the outer wall surface of the annular body 33, and multiple second rib structures are distributed around the annular body 33. When the sealing plug is used to seal the functional hole 42, the second side surface of each second rib structure away from the first axial center line of the annular body 33 is against the stop edge 41 of the functional hole 42.

[0058] For example, the functional hole 42 is circular, the second side surface of each second rib structure is located on a circle coaxial with the functional hole 42 , and the radius of the circle is equal to the radius of the functional hole 42 , or the radius of the circle is slightly smaller than the radius of the functional hole 42 .

[0059] In this way, when the sealing plug is used to seal the functional hole 42, the radial limiting structure 323 can ensure the radial position of the sealing part 2 and the elastic hook 31. Even if the wiring harness 5 in the wiring harness through hole 21 shakes or is pulled, it can still avoid deviation and reduce the sealing performance of the sealing plug or cause it to fall off.

[0060] In one example, the limiting portion 3 further has a plurality of first guide surfaces 321, which are adapted to be tilted and arranged opposite to the first axis 34 and the disc-shaped body 23, and the plurality of first guide surfaces 321 are distributed around the annular body 33 and are located on the side of the radial limiting structure 323 away from the disc-shaped body 23. When the sealing plug is used to block the functional hole 42, the maximum distance between a point on the first guide surface 321 and the second axis 43 of the functional hole 42 is adapted to the maximum distance between a point on the radial limiting structure 323 and the second axis 43 of the functional hole 42. The number of the first guide surfaces 321 may be three, or four or more.

[0061] For example, the maximum distance between a point on the first guide surface 321 and the second axis 43 of the functional hole 42 is equal to or slightly smaller than the maximum distance between a point on the radial limiting structure 323 and the second axis 43 of the functional hole 42 .

[0062] The first guide surface 321 may be a surface located on the third rib structure and facing away from the first axis 34 and the disc-shaped body 23 and arranged obliquely, each third rib structure may be connected to the outer wall surface of the annular body 33 and distributed around the annular body 33, and the third rib structure is located on the side of the radial limiting structure 323 away from the disc-shaped body 23. At the same time, the first guide surface 321 may extend from the disc-shaped body 23 toward the side away from the first axis 34 until the farthest distance between a point on the first guide surface 321 and the second axis 43 of the functional hole 42 is equal to or slightly less than the farthest distance between a point on the radial limiting structure 323 and the second axis 43 of the functional hole 42.

[0063] In this way, when installing the sealing plug in the functional hole 42 of the sheet metal 4 from the first side of the sheet metal 4, if there is a deviation in the initial position when installing the sealing plug, by making the first guide surface 321 abut against the stop edge 41 of the functional hole 42 before the radial limiting structure 323, the position of the sealing plug can be guided during the installation process, so that the radial limiting structure 323 can smoothly enter the functional hole 42, thereby facilitating the installation of the sealing plug and the radial limitation of the sealing plug by the radial limiting structure 323.

[0064] In one example, the axial limiting structure 322, the radial limiting structure 323 and the structure bearing the first guide surface 321 can be three independent structural members, respectively connected to the annular body 33, or can be configured as an integral rib plate structure 32. Figure 3 As shown, eight rib structures 32 are arranged on the outer wall of the annular body 33 , and each rib structure 32 is sequentially a first rib structure, a second rib structure and a third rib structure from a side close to the disc-shaped body 23 to a side far from the disc-shaped body 23 .

[0065] The first side surface of the first rib structure facing the sheet metal 4 is located in the same plane perpendicular to the second axis 42, and the farthest distance between a point on the first side surface and the first axis 34 is greater than the radius of the functional hole 42. The end of the first side surface closest to the first axis 34 is connected to the first end of the second side surface of the second rib structure, and the second side surface extends toward the side away from the disc-shaped body 23 in a direction parallel to the first axis 34. The second end of the second side surface is connected to the first guide surface 321 on the third rib structure, and the first guide surface 321 extends to the outer wall of the annular body 33 toward the side away from the disc-shaped body 23 and close to the first axis 34. The second side surface is located on a circle coaxial with the functional hole 42, and the radius of the circle is equal to the radius of the functional hole 42, or the radius of the circle is slightly smaller than the radius of the functional hole 42.

[0066] In one example, eight rib structures 32 are connected to the annular body 33, and two rib structures 32 form a group, and each group of rib structures 32 is evenly distributed around the annular body 33. This can reduce processing, improve integrity, and increase the strength of the axial limiting structure 322, the radial limiting structure 323, and the first guide surface 321.

[0067] In one example, the wiring harness through hole 21 and the wiring harness 5 are interference fit, so that the sealing performance of the sealing plug at the wiring harness through hole 21 can be ensured through the fit between the wiring harness through hole 21 and the wiring harness 5 .

[0068] In one example, reference Figure 2 Combined with Figure 6 As shown, the harness through hole 21 has a matching section 211 and a guide section 212, the matching section 211 is interference-fitted with the harness 5, the inner wall of the guide section 212 is tapered, the end of the guide section 212 with the smallest inner diameter is connected to the inner diameter of the matching section 211, and the smallest inner diameter of the guide section 212 matches the inner diameter of the matching section 211. For example, the smallest inner diameter of the guide section 212 may be equal to the inner diameter of the matching section 211, the inner diameter of the matching section 211 is equal to or slightly smaller than the diameter of the harness 5, and the maximum inner diameter of the guide section 212 is larger than the diameter of the harness 5.

[0069] In this way, it is quick and convenient to pass the wire harness through hole 21 from the end of the guide section 212 with the largest inner diameter of the wire harness through hole 21 and pass it out of the wire harness through hole 21 through the end of the guide section 212 with the smallest inner diameter and the matching section 211.

[0070] In one example, the annular body 33 and the harness through hole 21 can be as follows Figure 1 The diagram shows concentricity, but it can also be non-concentricity, as long as the harness through hole 21 is surrounded by the inner side of the annular body 33 .

[0071] In one example, when the sealing plug is used to seal the functional hole 42, the first axis 34 and the second axis 43 can be colinear or non-colinear, as long as the annular body 33 can enter the functional hole 42 and the free end of each elastic hook 31 can be against the second side of the sheet metal 4.

[0072] In one example, when the sealing plug is in a natural state, the minimum distance between each elastic hook 31 and the sealing portion 2 along the second axis 43 is less than the thickness of the sheet metal 4. Figure 6 and Figure 7 As shown, since the minimum distance between each elastic hook 31 and the sealing part 2 along the second axis 43 is smaller than the thickness of the sheet metal 4, when the sealing plug is used to seal the functional hole 42, there will be interference between the sealing part 2 and each elastic hook 31 and the sheet metal 4, so that the sealing part 2 and the elastic hook 31 clamp the sheet metal 4, which helps to prevent the sealing plug from falling off.

[0073] In one example, when the sealing plug is used to block the functional hole 42, the plurality of elastic hooks 31 are evenly distributed around the second axis 43 of the functional hole 42. Figure 3 Combined with Figure 6 As shown, the first axis 34 and the second axis 43 are collinear, and the four elastic hooks 31 are evenly distributed around the second axis 43. In this way, the interference between the sealing part 2 and the peripheral surface of the functional hole 4 can be ensured to be uniform, which is conducive to ensuring the sealing performance of the sealing part 2 to the functional hole 4.

[0074] In one example, in order to improve the sealing performance of the sealing part 2 to the functional hole 42, the sealing part 2 can be made of soft rubber material, or at least the part where the sealing part 2 abuts against the sheet metal 4 and the part where the sealing part 2 cooperates with the wiring harness 5 are made of soft rubber material. The soft rubber material can be rubber, TPE (Thermoplastic Elastomer), PVC (Polyvinylchloride), TPU (Thermoplastic polyurethanes) and other materials. Since the soft rubber material has better deformation ability, it can better achieve sealing cooperation with the sheet metal 4 and the wiring harness 5, thereby achieving better sealing.

[0075] For example, the disc-shaped body 23 and the annular elastic flange 22 of the sealing portion 2 can both be made of soft rubber material; for another example, the annular elastic flange 22 can be made of soft rubber material, while the disc-shaped body 23 is made of hard rubber material.

[0076] In one example, the limiting part 3 is made of hard rubber, which is a hard and tough vulcanized rubber made by vulcanizing unsaturated rubber with a high dose of sulfur, and has a glass transition temperature above room temperature and can hardly be stretched.

[0077] In one example, the disc-shaped body 23 and the annular elastic flange 22 may be integrally injection-molded, or may be two independent structural members fixed together by an adhesive process or an injection molding process.

[0078] In one example, the annular body 33 and the elastic hook 31 as well as the axial limiting structure 322, the radial limiting structure 323 and the structure that supports the first guide surface 321 can be integrally injection molded, or can be multiple independent structural parts fixed together by gluing or injection molding.

[0079] In one example, the annular body 33 and the disc-shaped body 23 may be integrally injection-molded, or may be two independent structural members fixed together by an adhesive process or an injection molding process.

[0080] In the disclosed embodiment, when installing the sealing plug into the functional hole 42 of the sheet metal 4 from the first side of the sheet metal 4, the second guide surface 312 of each elastic hook 31 is first placed against the stop edge 41 of the functional hole 42, and force is continued to be applied. Since the second guide surface 312 of the elastic hook 31 is subjected to the extrusion force from the stop edge 41 on the side away from the first axis line 34, the elastic hook 31 is forced to shrink to the side close to the axis, and then easily passes through the functional hole 42.

[0081] Until the elastic hook 31 completely passes through the functional hole 42 and reaches the second side of the sheet metal 4, the sealing part 2 abuts against the first side of the sheet metal 4, and thus cannot pass through the functional hole 42, thereby blocking the functional hole 42, while the elastic hook 31 returns to its original state, so that the abutting surface 311 of the free end of the elastic hook 31 abuts against the second side of the sheet metal 4, and thus cannot reversely pass through the functional hole 42. Thus, it can be ensured that the sealing plug is not easy to fall off.

[0082] An embodiment of the present disclosure also provides a vehicle, a functional hole 42 is opened on the sheet metal 4 of the vehicle, and the vehicle also includes a sealing plug as any one of the first aspects, when the sealing plug is used to seal the functional hole 42 of the sheet metal 4, the elastic hook 31 of the sealing plug passes from the first side of the sheet metal 4 through the functional hole 42 to the second side of the sheet metal 4, the free end of the elastic hook 31 abuts against the second side of the sheet metal 4, and the sealing portion 2 of the sealing plug abuts against the first side of the sheet metal 4.

[0083] In the disclosed embodiment, when installing the sealing plug into the functional hole 42 of the sheet metal 4 from the first side of the sheet metal 4, the second guide surface 312 of each elastic hook 31 is first placed against the stop edge 41 of the functional hole 42, and force is continued to be applied. Since the second guide surface 312 of the elastic hook 31 is subjected to the extrusion force from the stop edge 41 on the side away from the first axis line 34, the elastic hook 31 is forced to shrink to the side close to the axis, and then easily passes through the functional hole 42.

[0084] Until the elastic hook 31 completely passes through the functional hole 42 and reaches the second side of the sheet metal 4, the sealing part 2 abuts against the first side of the sheet metal 4, and thus cannot pass through the functional hole 42, thereby blocking the functional hole 42, while the elastic hook 31 returns to its original state, so that the abutting surface 311 of the free end of the elastic hook 31 abuts against the second side of the sheet metal 4, and thus cannot reversely pass through the functional hole 42. Thus, it can be ensured that the sealing plug is not easy to fall off.

[0085] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present disclosure can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0086] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A sealing plug, characterized in that: The sealing plug comprises a sealing portion (2) and a limiting portion (3); The sealing portion (2) has a disk-shaped body (23), and the center of the disk-shaped body (23) has a wire harness through hole (21) suitable for the wire harness (5) to pass through; The limiting portion (3) comprises an annular body (33) and a plurality of elastic hooks (31) distributed around the annular body (33); the annular body (33) is connected to the disc-shaped body (23) and surrounds the wiring harness through hole (21); a fixed end of each elastic hook (31) is connected to the annular body (33), and a free end extends obliquely toward the disc-shaped body (23) and away from a first axis (34) of the annular body (33); When the sealing plug is used to seal the functional hole (42) of the sheet metal (4), the elastic hook (31) passes from the first side of the sheet metal (4) through the functional hole (42) to the second side of the sheet metal (4), the free end of the elastic hook (31) abuts against the second side of the sheet metal (4), and the sealing portion (2) abuts against the first side of the sheet metal (4).

2. The sealing plug according to claim 1, characterized in that: The sealing portion (2) further comprises an annular elastic flange (22), wherein the annular elastic flange (22) is connected to the disc-shaped body (23) and surrounds the wiring harness through hole (21); Wherein, when the sealing plug is used to seal the functional hole (42), the annular elastic flange (22) is suitable for abutting against the first side of the sheet metal (4) around the functional hole (42).

3. The sealing plug according to claim 2, characterized in that: The limiting portion (3) further comprises a plurality of axial limiting structures (322), wherein the plurality of axial limiting structures (322) are distributed around the annular body (33) and are connected to the annular body (33); Wherein, when the sealing plug is used to seal the functional hole (42), each of the axial limiting structures (322) is suitable for abutting against the first side of the sheet metal (4) along the second axial center line (43) of the functional hole (42).

4. The sealing plug according to claim 1, characterized in that: The limiting portion (3) further comprises a plurality of radial limiting structures (323), wherein the plurality of radial limiting structures (323) are distributed around the annular body (33) and are connected to the annular body (33); Wherein, when the sealing plug is used to seal the functional hole (42), each of the radial limiting structures (323) is suitable for abutting against the stop edge (41) of the functional hole (42) along the radial direction of the functional hole (42).

5. The sealing plug according to claim 4, characterized in that: The limiting portion (3) further comprises a plurality of first guide surfaces (321), the first guide surfaces (321) being adapted to be arranged obliquely opposite to the first axis (34) and opposite to the disc-shaped body (23), the plurality of first guide surfaces (321) being distributed around the annular body (33) and being located on a side of the radial limiting structure (323) away from the disc-shaped body (23); When the sealing plug is used to seal the functional hole (42), the maximum distance between a point on the first guide surface (321) and the second axis (43) of the functional hole (42) is consistent with the maximum distance between a point on the radial limiting structure (323) and the second axis (43) of the functional hole (42).

6. The sealing plug according to claim 1, characterized in that: The wire harness through hole (21) is interference fit with the wire harness (5).

7. The sealing plug according to claim 6, characterized in that: The wiring harness through hole (21) comprises a matching section (211) and a guide section (212); the matching section (211) is interference-fitted with the wiring harness (5); the inner wall of the guide section (212) is conical; the end of the guide section (212) with the smallest inner diameter is connected to the inner diameter of the matching section (211); and the smallest inner diameter of the guide section (212) matches the inner diameter of the matching section (211).

8. The sealing plug according to claim 1, characterized in that: When the sealing plug is in a natural state, the minimum distance between each of the elastic hooks (31) and the sealing portion (2) along the second axis (43) is less than the thickness of the sheet metal (4).

9. The sealing plug according to claim 8, characterized in that: When the sealing plug is used to seal the functional hole (42), the plurality of elastic hooks (31) are evenly distributed around the second axis (43) of the functional hole (42).

10. A vehicle, characterized in that: A functional hole (42) is provided on the sheet metal (4) of the vehicle, and the vehicle further comprises a sealing plug as claimed in any one of claims 1 to 9.

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