Expansion rubber block and vehicle

Abstract

The utility model relates to the technical field of cavity sealing, in particular to an expansion rubber block and a vehicle. The expansion rubber block is used for filling a filling cavity of a vehicle body metal plate, the filling cavity is provided with a corner area, and the expansion rubber block comprises a framework and a rubber layer, the expansion material piece comprises an expansion main body and a corner filling part, the expansion main body is arranged in the filling cavity, the expansion main body and the cavity wall of the filling cavity are arranged in a spaced mode, the corner filling part is used for filling the corner area, and the corner filling part is attached to at least one side cavity wall of the corner area. The expansion rubber block provided by the utility model can be used for filling and sealing corner areas, so that gaps in the corner areas are avoided, and the sealing effect of the expansion rubber block is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cavity sealing, and in particular to an expansion rubber block and a vehicle. Background Art

[0002] Due to the design characteristics of the vehicle body structure, after assembly, the vehicle body has a cavity structure. When the vehicle is in motion, high-speed airflow rubs against the cavity wall, forming vortices in the cavity wall, generating turbulent airflow noise. Turbulent airflow also causes cavity resonance noise, and high-speed airflow fields easily transmit external noise. Therefore, to reduce noise and improve the user experience, it is necessary to block the cavity airflow.

[0003] In the related art, expandable rubber blocks are usually used to fill and seal the cavity structure of the vehicle body to block the airflow in the cavity. However, the cavity structure may have sharp corners, and the current expandable rubber blocks have difficulty filling the sharp corners after foaming, resulting in poor sealing effect. Utility Model Content

[0004] The present application provides an expansion rubber block and a vehicle, which are used to solve the problem that the current expansion rubber block is difficult to fill the sharp corner area after foaming and has a poor sealing effect.

[0005] In order to achieve the above objectives, the technical solutions of this application are as follows:

[0006] On the one hand, the present application provides an expansion rubber block for filling a filling cavity of a car body sheet metal, the filling cavity having a corner area, the expansion rubber block comprising: a frame; an expansion material piece covering the frame, the expansion material piece comprising an expansion body and a corner filling part, the expansion body being arranged in the filling cavity and spaced apart from the cavity wall of the filling cavity, the corner filling part being used to fill the corner area, and the corner filling part being in contact with at least one side of the cavity wall of the corner area.

[0007] In a possible implementation, the corner filling parts of the expansion rubber block provided in the present application are respectively fitted with the cavity walls on both sides of the corner area.

[0008] In a possible implementation, the thickness of the corner filling portion of the expansion rubber block provided in the present application is 3 mm to 5 mm.

[0009] In a possible implementation, the expansion rubber block provided in the present application has a chamfered structure provided on the deepest side of the corner filling portion facing the corner area.

[0010] In one possible implementation, the expansion rubber block provided in the present application, the expansion material piece also includes a limiting boss, the limiting boss is located on at least one side of the expansion body along its own thickness direction, the projection of the limiting boss in the reference plane and the projection of the corner filling part in the reference plane at least partially overlap, and the reference plane is perpendicular to the thickness direction of the expansion rubber block.

[0011] In one possible implementation, the expansion rubber block provided in the present application has a projection of the limiting boss within the reference plane located on the inner side of the projection of the corner filling portion within the reference plane, so that a step structure is formed between the limiting boss and the corner filling portion.

[0012] In a possible implementation, the expansion rubber block provided in the present application has multiple corner filling parts, and the multiple corner filling parts are distributed around the circumference of the expansion body.

[0013] In one possible implementation, the expansion rubber block provided in the present application has multiple corner filling parts including a horizontal filling part and a vertical filling part, and the limiting boss includes a first limiting boss and a second limiting boss, the first limiting boss corresponds to the horizontal filling part, and the second limiting boss corresponds to the vertical filling part, and the thicknesses of the first limiting boss and the second limiting boss are different.

[0014] In a possible implementation, in the expansion rubber block provided in the present application, the thickness of the first limiting boss is 6 mm-10 mm; and / or the thickness of the second limiting boss is 3 mm-6 mm.

[0015] On the other hand, the present application provides a vehicle, comprising: a body sheet metal having a filling cavity; and the above-mentioned expansion rubber block, wherein the expansion rubber block is filled in the filling cavity.

[0016] The present application provides an expansion rubber block and a vehicle, wherein the expansion rubber block is used to fill a filling cavity of a body sheet metal, and the filling cavity has a corner area. The expansion rubber block includes a skeleton and an expansion material piece covering the skeleton. The expansion material piece includes an expansion body and a corner filling portion. The expansion body is located in the filling cavity and is used to fill the sealed filling cavity. The expansion body is spaced apart from the cavity wall of the filling cavity to avoid interference or lifting during the foaming process of the expansion body. The corner filling portion is used to fill the corner area and is in contact with at least one side cavity wall of the corner area. This arrangement allows the corner filling portion to fill the sealed corner area when foaming, thereby improving the sealing effect of the expansion rubber block. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 A schematic diagram of the structure of the expansion rubber block provided in an embodiment of the present application;

[0019] Figure 2 Schematic diagram of the partial structure of the expansion rubber block provided in the embodiment of the present application Figure 1 ;

[0020] Figure 3 Schematic diagram of the partial structure of the expansion rubber block provided in the embodiment of the present application Figure 2 ;

[0021] Figure 4 Schematic diagram of the partial structure of the expansion rubber block provided in the embodiment of the present application Figure 3 ;

[0022] Figure 5 Schematic diagram of the assembly of the expansion rubber block and the filling cavity provided in an embodiment of the present application;

[0023] Figure 6 for Figure 5 A partial enlarged view of point A in the middle;

[0024] Figure 7 for Figure 5 A partial enlarged view of point B in the middle.

[0025] Description of reference numerals:

[0026] 10-expanding rubber block;

[0027] 100-skeleton;

[0028] 200-expanded material piece;

[0029] 210- expansion body;

[0030] 220 - corner filling portion; 221 - chamfered structure; 222 - horizontal filling portion; 223 - vertical filling portion;

[0031] 230-limiting boss; 231-first limiting boss; 232-second limiting boss;

[0032] 20-filling cavity;

[0033] 21- Corner area.

[0034] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the drawings in the preferred embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0036] It should be noted that in the description of the embodiments of the present application, terms such as "upper", "lower", "inside", and "outside" indicating orientation or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of description. They do not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0037] In addition, it should be noted that the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0038] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," and "fixed" should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0039] In the prior art, expandable rubber blocks are commonly used to fill and seal the cavity structures of vehicle bodies. Specifically, the expandable rubber block is placed within the cavity structure and then heated to expand the block, conforming to the cavity walls and blocking the airflow. However, the cavity structure often has sharp corners, and current expandable rubber blocks have difficulty filling these corners after foaming, resulting in poor sealing performance.

[0040] In view of this, the present application provides an expansion rubber block and a vehicle, wherein the expansion rubber block is used to fill a filling cavity of a body sheet metal, and the filling cavity has a corner area. The expansion rubber block includes a skeleton and an expansion material piece covering the skeleton. The expansion material piece includes an expansion body and a corner filling portion. The expansion body is located in the filling cavity and is used to fill the sealed filling cavity. The expansion body is spaced apart from the cavity wall of the filling cavity to avoid interference or lifting during the foaming process of the expansion body. The corner filling portion is used to fill the corner area and is in contact with at least one side of the cavity wall of the corner area. This arrangement allows the corner filling portion to fill the sealed corner area when foaming, thereby improving the sealing effect of the expansion rubber block.

[0041] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] See also Figures 1 to 7 The present application provides an expandable rubber block 10 for filling a filling cavity 20 of a vehicle body sheet metal. The filling cavity 20 has a corner region 21. The expandable rubber block 10 may include a frame 100 and an expandable material member 200. The expandable material member 200 covers the frame 100 and includes an expandable body 210 and a corner filling portion 220. The expandable body 210 is disposed within the filling cavity 20 and spaced apart from the cavity wall of the filling cavity 20. The corner filling portion 220 is used to fill the corner region 21 and is in contact with at least one side of the cavity wall of the corner region 21.

[0043] It is understood that the skeleton 100 serves as the basic support structure for the expandable rubber block 10, ensuring the stability of the overall shape of the expandable rubber block 10 and guaranteeing uniform foaming of the subsequent expandable rubber block 10. The expandable material 200 is tightly wrapped around the skeleton 100. This arrangement ensures that the expandable rubber block 10 has a certain structural strength and also provides good filling performance.

[0044] The frame 100 may be made of a composite plastic component. In this way, the frame 100 has a lower hardness than the vehicle body structure and can be deformed and bent, which facilitates the installation of the expansion rubber block 10 .

[0045] In a specific implementation, the expansion material piece 200 may include an expansion body 210 and a corner filling portion 220. The expansion body 210 is disposed in the filling cavity 20, occupying the main area of ​​the filling cavity 20, ensuring that the expansion body 210 can be evenly filled into the filling cavity 20 during the foaming process, thereby achieving a filling and sealing of the filling cavity 20. In addition, the expansion body 210 maintains a certain distance from the cavity wall of the filling cavity 20, that is, a certain avoidance gap can be reserved between the expansion body 210 and the cavity wall of the filling cavity 20 to prevent the expansion body 210 from interfering or lifting during the foaming process. The avoidance gap can be set within the range of 3mm-5mm, so that the expansion body 210 can achieve a filling and sealing of the filling cavity 20, while avoiding interference problems during the filling process.

[0046] It should be noted that when the expansion rubber block 10 fills and seals the filling cavity 20 , the interference problem may refer to contact, collision or obstruction between the expansion rubber block 10 and other components or structures in the filling cavity 20 during the filling process.

[0047] Furthermore, to enhance the sealing effect of the expandable rubber block 10 on the filling cavity 20, the expandable rubber block 10 is provided with a corner filling portion 220 at the corner region 21 of the filling cavity 20. The corner filling portion 220 closely adheres to at least one side of the cavity wall of the corner region 21. This configuration effectively eliminates the problem of gaps in the corner region of the expandable rubber block in the related art. By providing the corner filling portion 220 and closely adhering to at least one side of the cavity wall of the corner region 21, the tightness and uniformity of the expansion rubber block 10 filling are effectively improved, thereby enhancing the sealing effect of the expansion rubber block 10 on the filling cavity 20 and preventing gaps in the corner region 21.

[0048] See also Figure 6 and Figure 7 In the embodiment of the present application, the corner filling portion 220 is respectively adhered to the cavity walls on both sides of the corner area 21.

[0049] It should be noted that after the expansion rubber block 10 is coated and baked, it softens and foams. The corner filling portion 220, as a local structure of the expansion rubber block 10, has minimal interference with the filling cavity 20. Therefore, no clearance is required between the corner filling portion 220 and the corner region 21, but rather the corner filling portion 220 conforms to the cavity walls on both sides of the corner region 21. During the foaming process, the corner filling portion 220 can gradually expand along the contours of the cavity walls on both sides of the corner region 21 until it completely fills the corner region 21.

[0050] This arrangement effectively solves the problem of gaps in the corners of expandable rubber blocks in related technologies, improves the overall sealing performance of the filling cavity 20, and enhances the sealing effect of the expandable rubber block 10. By ensuring close contact between the corner filling portion 220 and the cavity walls on both sides of the corner area 21, the expandable rubber block 10 provided in this embodiment of the application can more effectively block the propagation path of airflow and noise, providing a quieter driving environment for the vehicle.

[0051] See also Figure 2 In the embodiment of the present application, the thickness of the corner filling portion 220 is 3mm-5mm.

[0052] It should be noted that the thickness of the corner filling part 220 can be set to d1, and the value range of d1 is 3mm-5mm. There is no avoidance gap between the corner filling part 220 and the corner area 21, but it fits with the cavity walls on both sides of the corner area 21. During the actual filling process, the interference problem between the corner filling part 220 and the corner area 21 may cause the actual installation position of the corner filling part 220 to deviate from the theoretical state. Therefore, the thickness of the corner filling part 220 cannot be too large. For example, when d1 is greater than 5mm, interference problems may occur. If the thickness of the corner filling part 220 is too small, it may increase the difficulty of the injection molding process and affect the reliability of the filling seal. Therefore, the thickness of the corner filling part 220 can be 3mm, 3.5mm, 4mm, etc. Of course, this embodiment is not limited here. In this way, the sealing effect of the corner filling part 220 on the corner area 21 can be ensured to avoid interference or lifting.

[0053] See also Figure 6 and Figure 7 In the embodiment of the present application, a chamfered structure 221 is provided on the deepest side of the corner filling portion 220 facing the corner area 21 .

[0054] The deepest part of the corner region 21 refers to the position where the corner region 21 is farthest from the expansion material piece 200 .

[0055] In a specific implementation, the corner filling portion 220 has a chamfered structure 221. The angle of the chamfered structure 221 should not be too small, as a too small angle will increase the difficulty of producing the corner filling portion 220 and easily cause defects in the corner filling portion 220. The angle of the chamfered structure 221 should not be too large, as a too large angle will be detrimental to the filling and sealing of the corner region 21 by the corner filling portion 220. Therefore, the chamfered structure 221 can be set according to actual production conditions and is not limited in this embodiment.

[0056] See also Figure 3 and Figure 4In the embodiment of the present application, the expansion material piece 200 further includes a limiting boss 230, which is located on at least one side of the expansion body 210 along its own thickness direction. The projection of the limiting boss 230 in the reference plane at least partially overlaps with the projection of the corner filling portion 220 in the reference plane, and the reference plane is perpendicular to the thickness direction of the expansion rubber block 10.

[0057] It can be understood that by providing the limiting boss 230 , the accuracy and stability of the expansion material piece 200 during the installation process are ensured, the movement of the expansion body 210 in all directions is effectively limited, and displacement caused by improper installation is prevented.

[0058] In addition, during the foaming process, the expansion material piece 200 will first be baked into a semi-solid state, and then a foaming reaction will occur from the semi-solid state, increasing its volume to fill the filling cavity 20. The expansion material piece 200 has a certain fluidity when in a semi-solid state. Specifically, when the corner filling portion 220 is in a semi-solid state, it may flow and deviate from its position in the solid state, resulting in an unstable sealing effect. Therefore, a limiting boss 230 is provided on at least one side of the expansion body 210 along its own thickness direction. When the limiting boss 230 and the corner filling portion 220 are projected onto a reference surface perpendicular to the thickness direction of the expansion rubber block 10, the projected area of ​​the limiting boss 230 and the corner filling portion 220 at least partially overlaps. With this arrangement, the expansion material piece 200 can be more firmly embedded in and fill the corner area 21, preventing the semi-solid corner filling portion 220 from flowing to other positions. By using the limiting boss 230 and the corner filling part 220 in conjunction with each other, the foaming amount of the expansion material piece 200 in the corner area 21 is ensured, the sealing performance and robustness of the expansion rubber block 10 are improved, and the robustness of the expansion rubber block 10 in filling and sealing the corner area 21 is improved.

[0059] See also Figures 2 to 4 In an embodiment of the present application, the projection of the limiting boss 230 within the reference plane is located on the inner side of the projection of the corner filling portion 220 within the reference plane, so that a step structure is formed between the limiting boss 230 and the corner filling portion 220.

[0060] The step structure formed between the limiting boss 230 and the corner filling portion 220 is intended to provide a clearance and prevent excessive interference with the expansion material 200, which could cause the actual installation position of the expansion material 200 to deviate from the theoretical installation position. Furthermore, the width of the step structure should not be too large. Excessive width would cause the limiting boss 230 to move away from the corner region 21, failing to suppress the flow of the semi-solid corner filling portion 220 and provide sufficient foaming capacity. For example, the width of the step structure can be set to 3mm-5mm. This allows the step structure formed between the limiting boss 230 and the corner filling portion 220 to avoid interference without affecting the limiting boss 230's filling of the corner region 21. This is not a limitation of this embodiment.

[0061] See also Figure 1 、 Figures 5 to 7 In the embodiment of the present application, there are multiple corner filling parts 220, and the multiple corner filling parts 220 are distributed on the circumferential side of the expansion body 210.

[0062] It can be understood that the number of corner filling parts 220 can be set according to the number of corner areas 21. For example, if the filling cavity 20 has two corner areas 21, then there can be two corner filling parts 220. The corner filling parts 220 are arranged in a one-to-one correspondence with the corner areas 21 to achieve filling and sealing of the corner areas 21. Of course, this embodiment is not limited here.

[0063] In addition, the corner area 21 is usually formed at the corner or edge position of the filling cavity 20. Thus, each corner filling part 220 can be distributed on the peripheral side of the expansion body 210. This facilitates the corresponding setting of the corner filling part 220 and the corner area 21 to achieve the filling and sealing of the corner area 21 by the corner filling part 220.

[0064] See also Figure 1 、 Figure 3 and Figure 4 In an embodiment of the present application, the multiple corner filling parts 220 include a horizontal filling part 222 and a vertical filling part 223, and the limiting boss 230 includes a first limiting boss 231 and a second limiting boss 232. The first limiting boss 231 corresponds to the horizontal filling part 222, and the second limiting boss 232 corresponds to the vertical filling part 223. The thicknesses of the first limiting boss 231 and the second limiting boss 232 are different.

[0065] It should be noted that, based on the structure of the filling cavity 20, multiple corner filling parts 220 may include a horizontal filling part 222 and a vertical filling part 223. In order to improve the filling effect of the horizontal filling part 222 and the vertical filling part 223 on the corresponding corner area 21, the limiting boss 230 may include a first limiting boss 231 corresponding to the horizontal filling part 222, and may also include a second limiting boss 232 corresponding to the vertical filling part 223.

[0066] In specific implementation, according to the structure of the filling cavity 20, the transverse filling portion 222 is slightly inclined along the cavity wall of the filling cavity 20, and the transverse filling portion 222 gradually tilts downward from the end facing the corner area 21. In this way, during the foaming process of the transverse filling portion 222, the semi-solid transverse filling portion 222 will flow along the cavity wall of the filling cavity 20, in a direction away from the corner area 21, causing the transverse filling portion 222 to deviate from the theoretical filling position due to the flow. During the foaming process of the vertical filling portion 223, the semi-solid vertical filling portion 223 will flow downward due to the effect of gravity, that is, flow in the direction toward the corner area 21. In this way, the vertical filling portion 223 can more easily seal the corner area 21. Therefore, the first limiting boss 231 and the second limiting boss 232 can be set to different thicknesses according to the actual filling conditions of the transverse filling portion 222 and the vertical filling portion 223.

[0067] See also Figure 3 and Figure 4 In the embodiment of the present application, the thickness of the first limiting boss 231 is 6 mm to 10 mm; and / or the thickness of the second limiting boss 232 is 3 mm to 6 mm.

[0068] It should be noted that the thickness of the first limiting boss 231 can be set to d2, and the value range of d2 is 6mm-10mm. Specifically, during the foaming process of the transverse filling portion 222, the semi-solid transverse filling portion 222 will flow along the cavity wall of the filling cavity 20, in the direction away from the corner area 21. Therefore, the thickness of the first limiting boss 231 cannot be too small. For example, when d2 is less than 6mm, it may cause a gap in the corner area 21 corresponding to the transverse filling portion 222, affecting the sealing effect. If the thickness of the first limiting boss 231 is too large, interference or lifting problems may occur, affecting the structural morphology of the filling cavity 20. Therefore, the thickness of the first limiting boss 231 can be 6mm, 7mm, 8mm, 9mm, etc. Of course, this embodiment is not limited here. In this way, the foaming amount can be ensured and gaps in the corresponding corner area 21 can be avoided.

[0069] Furthermore, the thickness of the second limiting boss 232 can be set to d3, and the value range of d3 is 3mm-6mm. Specifically, during the foaming process of the vertical filling portion 223, the semi-solid vertical filling portion 223 will flow downward due to the gravity effect, that is, flow in the direction toward the corner area 21. In this way, the vertical filling portion 223 can more easily seal the corner area 21. Therefore, the thickness of the second limiting boss 232 can be less than the thickness of the first limiting boss 231. Specifically, the thickness of the second limiting boss 232 can be 3mm, 4mm, 5mm, 6mm, etc. Of course, this is not limited in this embodiment. In this way, it can ensure that the foaming amount is sufficient to achieve filling and sealing of the corner area 21. In addition, it can save costs and avoid waste of materials.

[0070] Based on the above embodiments, another embodiment of the present application provides a vehicle comprising a body sheet metal and an expandable rubber block 10 according to any of the above embodiments. The body sheet metal has a filling cavity 20, and the expandable rubber block 10 is filled in the filling cavity 20. The structure of the expandable rubber block 10 has been described in detail in the above embodiments and will not be repeated here.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An expansion rubber block for filling a filling cavity (20) of a body sheet metal, characterized in that: The filling cavity (20) has a corner area (21), and the expansion rubber block (10) includes: skeleton(100); An expansion material piece (200) covers the skeleton (100), and the expansion material piece (200) includes an expansion body (210) and a corner filling portion (220). The expansion body (210) is arranged in the filling cavity (20) and is spaced apart from the cavity wall of the filling cavity (20). The corner filling portion (220) is used to fill the corner area (21), and the corner filling portion (220) is in contact with at least one side of the cavity wall of the corner area (21).

2. The expansion rubber block according to claim 1, characterized in that: The corner filling portion (220) is respectively fitted with the cavity walls on both sides of the corner area (21).

3. The expansion rubber block according to claim 2, characterized in that: The thickness of the corner filling portion (220) is 3 mm to 5 mm.

4. The expansion rubber block according to claim 1, characterized in that: A chamfered structure (221) is provided on the deepest side of the corner filling portion (220) facing the corner area (21).

5. The expansion rubber block according to claim 1, characterized in that: The expansion material piece (200) further comprises a limiting boss (230), the limiting boss (230) being located on at least one side of the expansion body (210) along its own thickness direction, the projection of the limiting boss (230) on the reference plane at least partially overlapping with the projection of the corner filling portion (220) on the reference plane, The reference surface is perpendicular to the thickness direction of the expansion rubber block (10).

6. The expansion rubber block according to claim 5, characterized in that: The projection of the limiting boss (230) in the reference plane is located inside the projection of the corner filling portion (220) in the reference plane, so that a step structure is formed between the limiting boss (230) and the corner filling portion (220).

7. The expansion rubber block according to claim 5, characterized in that: There are a plurality of corner filling portions (220), and the plurality of corner filling portions (220) are distributed around the circumference of the expansion body (210).

8. The expansion rubber block according to claim 7, characterized in that: The plurality of corner filling portions (220) include a transverse filling portion (222) and a vertical filling portion (223); the limiting boss (230) includes a first limiting boss (231) and a second limiting boss (232); The first limiting boss (231) corresponds to the transverse filling portion (222). The second limiting boss (232) corresponds to the vertical filling portion (223). The first limiting boss (231) and the second limiting boss (232) have different thicknesses.

9. The expansion rubber block according to claim 8, characterized in that: The thickness of the first limiting boss (231) is 6 mm to 10 mm; and / or, The thickness of the second limiting boss (232) is 3 mm to 6 mm.

10. A vehicle, characterized in that: include: A body sheet metal having a filler cavity (20); The expansion rubber block (10) according to any one of claims 1 to 9, wherein the expansion rubber block (10) is filled in the filling cavity (20).

Images