Sealing element and vehicle

Abstract

The invention discloses a sealing element and a vehicle, and belongs to the technical field of vehicles. The sealing piece comprises a main body piece and a hot melting piece. The main body piece comprises a pressing part and a clamping hook part which are connected, a clamping area is formed between the clamping hook part and the pressing part, and the clamping area is used for clamping the part, located around the to-be-blocked hole, of the target piece. And the hot melting piece wraps the circumferential part of the main body piece. And after the hot melting piece is heated, the hot melting piece is changed into the second form from the first form, so that the pressing part and the target piece are bonded together, and the to-be-blocked hole is sealed. By the adoption of the technical scheme, the sealing performance of the sealing piece can be improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a seal and a vehicle. Background Art

[0002] The vehicle body is opened during the manufacturing process to meet the requirements of lightweight, welding and painting processes. These holes need to be sealed with seals to prevent moisture, dust and air from entering, thereby protecting the vehicle's NVH (Noise, Vibration and Harshness) performance and improving the driving comfort in the vehicle.

[0003] In the related art, the seal is an integrally formed structure of rubber material, and the surface of the seal is rigidly pressed against the surface around the hole to achieve sealing. However, this type of seal is prone to deformation, resulting in the hole not being tightly sealed, and thus prone to sealing failure. Summary of the invention

[0004] In view of this, the present application provides a seal and a vehicle, which can improve the sealing performance of the seal.

[0005] On the one hand, an embodiment of the present application provides a sealing member, wherein the sealing member includes a main body member and a hot melt member;

[0006] The main body comprises a pressing portion and a hook portion connected to each other, a clamping area is formed between the hook portion and the pressing portion, a portion of the hook portion extends into the hole to be blocked of the target component, and the clamping area is used to clamp a portion of the target component located around the hole to be blocked;

[0007] The hot melt component wraps the circumferential portion of the main body component;

[0008] Wherein, after the hot melt component is heated, the hot melt component changes from the first state to the second state, so as to bond the pressing portion and the target component together, so as to seal the hole to be blocked.

[0009] Optionally, the pressing portion includes a main body portion and an extending portion;

[0010] One side of the extension portion is connected to the circumference of the main body portion, and the other side extends away from the main body portion;

[0011] The extension portion has a plurality of through holes, the plurality of through holes are evenly distributed along the circumference of the extension portion, and the through holes are used to accommodate a portion of the hot melt component;

[0012] The hot melt wraps the extension portion and a portion of the main body adjacent to the extension portion.

[0013] Optionally, the pressing portion includes a first surface and a second surface opposite to each other, the second surface is connected to the hook portion, and the second surface is connected to a plurality of protrusions, the plurality of protrusions are evenly distributed along the circumference of the second surface and are located inside the plurality of through holes;

[0014] The target part includes a third surface and a fourth surface facing each other, the third surface faces the second surface, and the fourth surface faces away from the second surface. When the portion of the target part located around the hole to be blocked is located in the holding area, the protrusion is suitable for abutting against the third surface, and the end of the hook portion is suitable for abutting against the fourth surface.

[0015] Optionally, when the hot melt component is in the first form, the orthographic projection of the protrusion on the third surface does not overlap with the orthographic projection of the hot melt component on the third surface;

[0016] When the hot melt member is in the second state, the orthographic projection of the protrusion on the third surface is located within the orthographic projection of the hot melt member on the third surface.

[0017] Optionally, the main body is arc-shaped, and the concave surface of the arc is connected to the hook portion.

[0018] Optionally, the hook portion includes a first plate portion and a second plate portion that are connected;

[0019] The first plate portion is connected to the second surface and extends away from the main body portion;

[0020] The second plate portion is connected to an end of the first plate portion away from the second surface and is bent toward the second surface, and the clamping area is formed between the end surface of the second plate portion and the second surface;

[0021] When the portion of the target component located around the hole to be blocked is located in the clamping area, one end of the second plate portion close to the second surface abuts against the fourth surface.

[0022] Optionally, the second plate portion includes a first portion and a second portion;

[0023] Two ends of the first part are respectively connected to one end of the first plate portion away from the second surface and one end of the second part;

[0024] In a direction from the second surface to the first surface, a distance between the second portion and the first plate portion gradually increases, wherein the second portion can shrink toward the first plate portion when pressed.

[0025] Optionally, the main body comprises two hook portions, and the two hook portions are arranged opposite to each other in the radial direction of the main body and have a gap therebetween.

[0026] Optionally, the hot melt comprises a polymer-based adhesive and a foaming agent.

[0027] On the other hand, an embodiment of the present application further provides a vehicle, comprising a target part and a sealing member as described in any one of the above embodiments of the present application, wherein the target part has a hole to be sealed, and the sealing member is used to seal the hole to be sealed.

[0028] The sealing member provided in the embodiment of the present application includes a main body and a hot melt member. The main body includes a pressing portion and a hook portion connected to each other, a portion of the hook portion extends into the hole to be sealed of the target member, and the portion of the target member located around the hole to be sealed can be snapped into the clamping area formed between the hook portion and the pressing portion, so that the sealing member can be assembled with the target member. The hot melt member wraps the circumferential portion of the main body. When the hot melt member is heated, it can change from a first form to a second form, so that the pressing portion and the target member can be bonded together to seal the hole to be sealed. Since the hot melt member in the second form has adhesiveness, the bonding strength between the hot melt member and the target member can be increased, that is, the hot melt member can fix the circumference of the main body member and the target member more firmly, thereby improving the sealing performance of the sealing member. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 is a schematic structural diagram of a seal provided in an embodiment of the present application;

[0031] Figure 2 It is a structural schematic diagram of a main body of a seal provided in an embodiment of the present application;

[0032] Figure 3 is a cross-sectional schematic diagram of a hot melt component in a sealing component provided by an embodiment of the present application when the hot melt component is in a first state;

[0033] Figure 4 is a top view of a sealing member and a target member after being assembled according to an embodiment of the present application;

[0034] Figure 5 yes Figure 4 A cross-sectional schematic diagram and a partial enlarged diagram thereof of a hot melt component in a seal provided in an embodiment of the present application when the hot melt component is in a second state at section AA;

[0035] Figure 6It is a side view of a seal provided in an embodiment of the present application.

[0036] Reference numerals:

[0037] 100, main body; 101, pressing portion; 102, hook portion; 103, holding area; 104, main body; 105, extension portion; 106, through hole; 107, first surface; 108, second surface; 109, protrusion; 110, first plate portion; 111, second plate portion; 112, first part; 113, second part; 114, gap; 115, connecting portion;

[0038] 200, hot melt parts;

[0039] 300, target part; 301, hole to be blocked; 302, third surface; 303, fourth surface.

[0040] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally represented by Figure 1 The relative relationship of the orientation shown in the figure is used as a reference, and these orientation terms are used only to more clearly describe the relationship between structures, not to describe absolute orientations. When the product is placed in different postures, the orientation may change, for example, "upper" and "lower" may be interchangeable. Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as those generally understood by those skilled in the art.

[0043] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0044] Combination Figure 1 , Figure 3 and Figure 5 As shown, an embodiment of the present application provides a sealing component, which includes a main body component 100 and a hot melt component 200 .

[0045] The main body 100 includes a pressing portion 101 and a hook portion 102 connected to each other, and a holding area 103 is formed between the hook portion 102 and the pressing portion 101. A portion of the hook portion 102 extends into the hole 301 to be blocked of the target part 300, and the holding area 103 is used to hold the portion of the target part 300 located around the hole 301 to be blocked. Thus, the sealing member can be assembled with the target part 300. It should be noted that the target part 300 can be, for example, a sheet metal part such as a floor, a door sill, or a door panel of a vehicle. The hole 301 to be blocked refers to a hole opened at a required position of the target part 300 to meet the requirements of the vehicle body itself, welding process or painting process, and a hole that needs to be sealed during the painting or assembly stage of the vehicle to enhance driving comfort and sealing requirements. The shape of the hole 301 to be blocked can be, for example, a circular, waist-shaped or other special-shaped hole, and the embodiment of the present application does not limit the shape of the hole 301 to be blocked.

[0046] The hot melt 200 wraps the circumferential portion of the main body 100. It should be noted that the hot melt 200 wraps the circumferential portion of the main body 100, which means that the hot melt 200 wraps the circumferential portion of the upper surface of the main body 100, the circumferential portion of the lower surface of the main body 100, and the side of the main body 100.

[0047] After the hot melt component 200 is heated, the hot melt component 200 changes from the first state to the second state, so as to bond the pressing portion 101 and the target component 300 together, so as to seal the hole 301 to be blocked.

[0048] It should be noted that, since the hot melt component 200 in the second form is viscous, the bonding strength between the hot melt component 200 and the target component 300 can be improved, that is, the hot melt component 200 can fix the circumference of the main component 100 and the target component 300 more firmly, thereby improving the sealing performance of the seal. In addition, since the hot melt component 200 wraps the circumferential portion of the main component 100, the assembler can quickly check the sealing defects of the seal by visually inspecting the outer surface of the seal, thereby improving the efficiency of checking the sealing defects of the seal.

[0049] The following is combined with Figures 1 to 6 The details and functions of the seal provided in the embodiments of the present application are described in more detail.

[0050] Combination Figure 4 and Figure 5 As shown, in some embodiments, the hot melt component 200 includes a polymer-based adhesive. When the hot melt component 200 is heated to a certain temperature, it can melt and become sticky, thereby increasing the bonding strength between the main component 100 and the target component 300, so as to firmly bond the main component 100 and the target component 300 together.

[0051] In some embodiments, the hot melt component 200 includes a polymer-based adhesive and a foaming agent. Since the hot melt component 200 contains a polymer-based adhesive, when the hot melt component 200 is heated to a certain temperature, it can melt and become sticky, thereby increasing the bonding strength between the main component 100 and the target component 300, so as to firmly bond the main component 100 and the target component 300 together. At the same time, since the hot melt component 200 contains a foaming agent, when the hot melt component 200 is heated, the foaming agent can expand, so that the hot melt component 200 can quickly expand outward and block the hole 301 to be blocked. It should be noted that since the foaming agent can increase the volume of the hot melt component 200, the content of the polymer-based adhesive in the hot melt component 200 can be reduced, thereby reducing the cost of the hot melt component 200.

[0052] In some embodiments, the foaming agent is a closed-cell material, so that when the hot melt part 200 is melted into the second form, it can also play a certain sound insulation effect, thereby improving the NVH performance of the target part 300.

[0053] In some embodiments, the foaming rate of the hot melt 200 is 30% to 60%, so that the amount of material used in the hot melt 200 can be further reduced while ensuring sealing, so as to ensure that the cost of the sealing member is low. In some examples, the foaming rate of the hot melt 200 can be 40% to 50% to minimize the cost of the hot melt 200.

[0054] In some embodiments, the polymer-based adhesive is, for example, ethylene-vinyl acetate copolymer or ethylene-methacrylate copolymer.

[0055] Combination Figure 3 and Figure 5 As shown, in some embodiments, the hot melt member 200 is annular, and when the hot melt member 200 is in the first form, the width of the hot melt member 200 is 2mm to 3mm. Therefore, when the hot melt member 200 is melted into the second form, it can ensure that the sealing member has a good sealing effect and can be stably bonded to the target part 300. In some embodiments, the width of the hot melt member 200 can be 2.5mm. In this way, it can ensure that the hot melt member 200 achieves effective sealing, so that the target part 300 has higher NVH performance after being blocked, and the cost of the hot melt member 200 can be lower.

[0056] Combination Figure 3 and Figure 5As shown, in some embodiments, the hot melt component 200 melts from the first form to the second form when the heating temperature reaches the first temperature. The thermal deformation temperature of the main body 100 is the second temperature, wherein the second temperature is greater than the first temperature. This ensures that when the hot melt component 200 is heated, the main body 100 will not be deformed by heating. In some embodiments, the first temperature is any temperature between 140°C and 160°C. The heating time of the hot melt component 200 is 10 minutes to 20 minutes. It should be noted that, generally, during the coating oven stage of a vehicle, the hot melt component 200 can be heated so that the hot melt component 200 melts from the first form to the second form to seal the hole 301 to be blocked. In some embodiments, the heating time can be 15 minutes to 20 minutes. This ensures that the hot melt component 200 can be fully heated and expand rapidly.

[0057] In some embodiments, the material of the main body 100 is a thermoplastic synthetic material. The main body 100 can be formed by injection molding. It should be noted that the thermoplastic synthetic material can be, for example, polyamide or polyimide. This ensures that the main body 100 has a high thermal deformation temperature, for example, the second temperature can be greater than 250°C. In this way, when the hot melt 200 is heated, the main body 100 can still maintain its original shape.

[0058] In some embodiments, the material of the main body 100 is a thermoplastic synthetic material and glass fiber, and the main body 100 can be processed and formed by an injection molding process. It should be noted that the thermoplastic synthetic material can ensure that the main body 100 has a higher thermal deformation temperature, and the glass fiber can further improve the strength of the main body 100, prevent the main body 100 from deformation, and improve the stability and reliability of the seal.

[0059] It should be noted that the main body 100 and the hot melt part 200 can be integrally molded by injection molding processes such as co-injection molding, side-by-side injection molding or two-color injection molding. The processing process of the seal can be, for example, as follows: firstly, the thermoplastic synthetic material or the thermoplastic synthetic material and the glass fiber are injected into the injection mold of the main body 100, and the main body 100 is formed after cooling and the main body 100 is demolded. Then, the polymer-based adhesive and the foaming agent are injected into the circumference of the main body 100, and the hot melt part 200 that wraps the circumference of the main body 100 is formed after cooling, and then the main body 100 and the hot melt part 200 that are injection molded into one are demolded to obtain the seal.

[0060] Combination Figure 3 and Figure 5As shown, in some embodiments, the pressing portion 101 includes a main body 104 and an extension portion 105. One side of the extension portion 105 is connected to the circumference of the main body 104, and the other side extends away from the main body 104. The extension portion 105 has a plurality of through holes 106, and the plurality of through holes 106 are evenly distributed along the circumference of the extension portion 105, and the through holes 106 are used to accommodate part of the hot melt 200. The hot melt 200 wraps the extension portion 105 and the part of the main body 104 adjacent to the extension portion 105. It should be noted that when the main body 100 and the hot melt 200 are injection molded, a part of the hot melt 200 enters the through hole 106, so that the main body 100 can be fixed together with the hot melt 200, and the main body 100 can also support the hot melt 200.

[0061] Combination Figure 3 and Figure 5 As shown, in some embodiments, the pressing portion 101 includes a first surface 107 and a second surface 108 opposite to each other, the second surface 108 is connected to the hook portion 102, and the second surface 108 is connected to a plurality of protrusions 109, and the plurality of protrusions 109 are evenly distributed along the circumference of the second surface 108 and are located on the inner side of the plurality of through holes 106.

[0062] The target part 300 includes a third surface 302 and a fourth surface 303 facing each other, the third surface 302 faces the second surface 108, and the fourth surface 303 faces away from the second surface 108. When the portion of the target part 300 located around the hole 301 to be blocked is located in the clamping area 103, the protrusion 109 is suitable for abutting against the third surface 302, and the end of the hook portion 102 is suitable for abutting against the fourth surface 303. It should be noted that after the protrusion 109 abuts against the third surface 302, a gap can be formed between the circumference of the second surface 108 and the third surface 302, so that when the hot melt 200 is heated to the second state, the hot melt 200 can fill the gap formed between the circumference of the second surface 108 and the third surface 302 to increase the contact area between the hot melt 200 and the second surface 108 and the third surface 302, thereby improving the bonding force between the pressing portion 101 and the target part 300, and ensuring that there is a certain thickness of the adhesive hot melt 200 between the circumference of the second surface 108 and the third surface 302. In other words, it can not only improve the sealing effect of the hole 301 to be blocked, but also ensure that the seal can withstand a higher pressure without separating from the target part 300, thereby improving the reliability and stability of the bonding between the seal and the target part 300.

[0063] Combination Figure 1 As shown, in some embodiments, the thickness of the pressing portion 101 is 1 mm to 2.5 mm, for example, 2 mm. In this way, when the sealing member seals the hole to be blocked 301, the sealing member can not only prevent impurities from flowing into the hole to be blocked 301, but also achieve a good sound insulation effect.

[0064] Combination Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, when the hot melt member 200 is in the first state, the orthographic projection of the protrusion 109 on the third surface 302 does not overlap with the orthographic projection of the hot melt member 200 on the third surface 302. When the hot melt member 200 is in the second state, the orthographic projection of the protrusion 109 on the third surface 302 is located within the orthographic projection of the hot melt member 200 on the third surface 302. That is, when the hot melt member 200 is melted, the contact area between the second surface 108 and the third surface 302 can be increased, thereby improving the bonding force between the sealing member and the target member 300. It should be noted that when the hot melt component 200 is heated and changes from the first form to the second form, a portion of the hot melt component 200 can wrap around the protrusion 109, fill the area between two adjacent protrusions 109 and the gap between the circumference of the second surface 108 and the third surface 302, and the other portion can wrap around the surface of the extension portion 105 and the circumferential surface adjacent to the main body 104 and the extension portion 105, so that the seal and the target part 300 can be stably bonded together, thereby improving the sealing effect of the seal.

[0065] like Figure 3 As shown, in some embodiments, the body portion 104 is arc-shaped, and the arc-shaped concave surface is connected to the hook portion 102. It should be noted that when the sealing member is assembled with the hole to be blocked 301 of the target member 300, the arc-shaped convex surface is convenient for the operator to press to insert a part of the hook portion 102 into the hole to be blocked 301, which is convenient for assembly.

[0066] Combination Figure 2 and Figure 3 As shown, in some embodiments, the hook portion 102 includes a first plate portion 110 and a second plate portion 111 connected to each other. The first plate portion 110 is connected to the second surface 108 and extends away from the body portion 104. The second plate portion 111 is connected to an end of the first plate portion 110 away from the second surface 108 and is bent toward the second surface 108, and a holding area 103 is formed between the end surface of the second plate portion 111 and the second surface 108.

[0067] When the portion of the target part 300 located around the hole 301 to be sealed is located in the clamping area 103, the end of the second plate portion 111 close to the second surface 108 abuts against the fourth surface 303. It should be noted that the hook member is elastic. The process of installing the seal into the hole 301 to be sealed is as follows: the end of the hook portion 102 away from the main body 104 gradually extends into the hole 301 to be sealed. During the extension process, the second plate portion 111 shrinks due to the inward pressure applied by the hole wall of the hole 301 to be sealed. When the second plate portion 111 completely enters the hole 301 to be sealed, the second plate portion 111 is not affected by the pressure of the hole 301 to be sealed and opens outward to the initial state. At this time, the end of the second plate portion 111 close to the second surface 108 abuts against the fourth surface 303, and the protrusion 109 abuts against the third surface 302, so that the portion of the target part 300 located around the hole 301 to be sealed can be stably clamped by the seal.

[0068] like Figure 2 As shown, in some embodiments, the second plate portion 111 includes a first portion 112 and a second portion 113. The two ends of the first portion 112 are respectively connected to one end of the first plate portion 110 away from the second surface 108 and one end of the second portion 113. In the direction from the second surface 108 to the first surface 107, the distance between the second portion 113 and the first plate portion 110 gradually increases, wherein the second portion 113 can shrink toward the first plate portion 110 when compressed. In this way, the area formed between the first plate portion 110 and the second portion 113 can provide sufficient deformation space for the second portion 113 to shrink under pressure.

[0069] like Figure 2 and Figure 6 As shown, in some embodiments, the main body 100 includes two hook portions 102, which are arranged opposite to each other in the radial direction of the main body 104 and have a gap 114. It should be noted that by providing the gap 114, the two hook portions 102 can be prevented from interfering with each other when being squeezed and contracted by the hole 301 to be blocked, that is, sufficient deformation space is provided for the hook portions 102.

[0070] like Figure 2As shown, in some embodiments, the main body 100 further includes two connecting parts 115, one end of the connecting part 115 is connected to the main body 104, and the other end extends away from the main body 104. The two sides of each connecting part 115 are respectively connected to the adjacent sides of the two hook parts 102. By providing the connecting part 115, the two hook parts 102 can be stably connected together, and a certain support can be provided to the hook part 102, thereby increasing the strength of the hook part 102. In some embodiments, in the axial direction of the hole 301 to be blocked, the size of the hook part 102 is smaller than the size of the hook part 102, thereby ensuring that the two hook parts 102 can have a gap 114 in the radial direction of the main body 104 to provide sufficient space for the deformation of the hook part 102.

[0071] It should be noted that the installation process of the sealing member and the target member 300 is as follows: first, the portion of the target member 300 located around the hole 301 to be blocked is clamped by the clamping area 103 formed by the clamping hook portion 102 and the main body portion 104. Generally, the target member 300 is a sheet metal member after electrophoresis. Then, the target member 300 enters the paint baking furnace. After baking and cooling in the paint baking furnace, the hot melt member 200 changes from the first form to the second form, so as to stably bond the target member 300 and the main body 100 together, thereby completing the sealing of the hole 301 to be blocked.

[0072] On the other hand, the embodiment of the present application also provides a vehicle, the vehicle includes a target part 300 and a seal as described in any one of the embodiments of the present application above, the target part 300 has a hole 301 to be blocked, and the seal is used to seal the hole 301 to be blocked. It should be noted that the seal in the vehicle provided in the embodiment of the present application is the same as the composition and function of any of the seals provided in the above embodiments of the present application, so the embodiment of the present application will not be repeated here. The target part 300 can be, for example, a sheet metal part such as a floor, a door sill, or a door panel of the vehicle. The hole 301 to be blocked refers to a hole opened at a required position of the target part 300 to meet the requirements of the vehicle body itself, welding process or painting process, and to enhance driving comfort and sealing requirements, the hole needs to be sealed during the painting or assembly stage of the vehicle. The shape of the hole 301 to be blocked can be, for example, a circular, waist-shaped or other special-shaped hole, and the embodiment of the present application does not limit the shape of the hole 301 to be blocked.

[0073] Since the hot melt component 200 in the seal can be changed from the first form to the second form after being heated and melted, and has high viscosity, the seal can be more stably bonded to the target component 300 to seal the hole to be blocked 301. Since the seal has high sealing performance, it can improve the sealing effect of the hole to be blocked 301, so that impurities or noise can be prevented from entering the vehicle through the hole to be blocked 301, thereby achieving the purpose of further improving and enhancing the sound insulation and noise reduction in the vehicle cabin, so that the NVH performance of the vehicle is significantly improved, thereby improving the comfort of the user.

[0074] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0075] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A sealing member, characterized in that: The sealing member comprises a main body member (100) and a hot melt member (200); The main body (100) comprises a pressing portion (101) and a hook portion (102) connected to each other, a clamping area (103) is formed between the hook portion (102) and the pressing portion (101), a portion of the hook portion (102) extends into the hole (301) to be blocked of the target part (300), and the clamping area (103) is used to clamp a portion of the target part (300) located around the hole (301) to be blocked; The hot melt component (200) wraps the circumferential portion of the main body component (100); Wherein, after the hot melt component (200) is heated, the hot melt component (200) changes from a first state to a second state, so as to bond the pressing portion (101) and the target component (300) together, so as to seal the hole (301) to be blocked.

2. The seal according to claim 1, characterized in that The pressing portion (101) comprises a main body portion (104) and an extending portion (105); One side of the extension portion (105) is connected to the circumference of the main body portion (104), and the other side extends away from the main body portion (104); The extension portion (105) has a plurality of through holes (106), the plurality of through holes (106) are evenly distributed along the circumference of the extension portion (105), and the through holes (106) are used to accommodate a portion of the hot melt component (200); The hot melt component (200) wraps the extension portion (105) and the portion where the main body (104) and the extension portion (105) are connected.

3. The seal according to claim 2, characterized in that The pressing portion (101) comprises a first surface (107) and a second surface (108) which are opposite to each other, the second surface (108) is connected to the hook portion (102), and the second surface (108) is connected to a plurality of protrusions (109), and the plurality of protrusions (109) are evenly distributed along the circumference of the second surface (108) and are located on the inner sides of the plurality of through holes (106); The target part (300) comprises a third surface (302) and a fourth surface (303) facing each other, wherein the third surface (302) faces the second surface (108), and the fourth surface (303) faces away from the second surface (108); when the portion of the target part (300) located around the hole (301) to be blocked is located in the holding area (103), the protrusion (109) is suitable for abutting against the third surface (302), and the end of the hook portion (102) is suitable for abutting against the fourth surface (303).

4. The seal according to claim 3, characterized in that When the hot melt component (200) is in the first state, the orthographic projection of the protrusion (109) on the third surface (302) does not overlap with the orthographic projection of the hot melt component (200) on the third surface (302); When the hot melt component (200) is in the second state, the orthographic projection of the protrusion (109) on the third surface (302) is located within the orthographic projection of the hot melt component (200) on the third surface (302).

5. The seal according to claim 2, characterized in that The main body (104) is arc-shaped, and the concave surface of the arc is connected to the hook portion (102).

6. The seal according to claim 3, characterized in that The hook portion (102) comprises a first plate portion (110) and a second plate portion (111) which are connected; The first plate portion (110) is connected to the second surface (108) and extends away from the main body portion (104); The second plate portion (111) is connected to an end of the first plate portion (110) away from the second surface (108) and is bent toward the second surface (108), and the clamping area (103) is formed between the end surface of the second plate portion (111) and the second surface (108); When the portion of the target part (300) located around the hole (301) to be blocked is located in the clamping area (103), one end of the second plate portion (111) close to the second surface (108) abuts against the fourth surface (303).

7. The seal according to claim 6, characterized in that The second plate portion (111) includes a first portion (112) and a second portion (113); Two ends of the first part (112) are respectively connected to one end of the first plate portion (110) away from the second surface (108) and one end of the second part (113); In the direction from the second surface (108) to the first surface (107), the distance between the second portion (113) and the first plate portion (110) gradually increases, wherein the second portion (113) can shrink toward the first plate portion (110) when under pressure.

8. The seal according to claim 1, characterized in that The main body (100) comprises two hook portions (102), and the two hook portions (102) are arranged opposite to each other in the radial direction of the main body (104) and have a gap (114).

9. The seal according to claim 1, characterized in that The hot melt member (200) includes a polymer-based adhesive and a foaming agent.

10. A vehicle, characterized in that: The vehicle comprises a target part (300) and a sealing member according to any one of claims 1 to 9, the target part (300) having a hole (301) to be blocked, and the sealing member is used for sealing the hole (301) to be blocked.

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