Air spring buffer block mounting structure, air spring damping assembly and vehicle

Abstract

The utility model provides an air spring buffer block mounting structure, an air spring damping assembly and a vehicle, and belongs to the technical field of automobiles. The air spring buffer block mounting structure comprises a support, a buffer block and a plurality of connecting pieces; the support comprises a mounting part, the end face of the mounting part is attached to the end face of the buffer block, and the multiple connecting pieces are arranged between the mounting part and the buffer block; the connecting piece comprises a first connecting part and a second connecting part which are integrally formed; the first connecting part is connected with the mounting part; and the second connecting part is connected with the buffer block. According to the air spring buffer block mounting structure, by arranging the connecting piece, matching between the buffer block and the support is optimized, the support structure is simplified, larger allowance is provided for the internal structure design of the air spring, the adjusting space of the outer diameter of the buffer block is released, and the durability of the buffer block is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to an air spring buffer block mounting structure, an air spring shock absorbing assembly and a vehicle. Background Art

[0002] With the rapid development of the automotive industry, the application of air springs, which were once considered exclusive to high-end models, has become more and more widespread in recent years. Compared with traditional coil springs, air springs can achieve adjustable height and stiffness of the entire vehicle, which can bring users a better driving experience. Although air springs can achieve increased functions, their internal structure is more complex. In order to meet the requirements of the layout of the surrounding parts of the entire vehicle, when designing the air spring structure, it is necessary to ensure that its outer dimensions cannot exceed the boundaries of the coil spring. This requires that the internal structure of the air spring be simplified to the greatest extent when designing it to meet the requirements of the layout of the surrounding parts.

[0003] The existing air spring buffer block and upper support matching structure usually adopts the following form: a groove structure is designed on the upper support base, and the buffer block is pressed into the upper support base through deformation. This matching structure will limit the outer diameter of the buffer block, resulting in a small design margin for the height-to-diameter ratio of the buffer block, affecting the durability of the buffer block, and failing to meet the more stringent durability requirements of new energy vehicles for the buffer block. Utility Model Content

[0004] In view of this, the present application aims to propose an air spring buffer block mounting structure, an air spring shock absorber assembly and a vehicle to solve the problem in the prior art that the outer diameter design space of the buffer block is insufficient and the durability is affected.

[0005] To achieve the above purpose, the technical solution of this application is implemented as follows:

[0006] An air spring buffer block mounting structure comprises a support, a buffer block and a plurality of connecting parts;

[0007] The support comprises a mounting portion, an end surface of the mounting portion is arranged in contact with an end surface of the buffer block, and a plurality of connecting members are arranged between the mounting portion and the buffer block;

[0008] The connecting piece includes a first connecting portion and a second connecting portion formed integrally;

[0009] The first connecting portion is connected to the mounting portion;

[0010] The second connecting portion is connected to the buffer block.

[0011] Through the above technical solution, by setting a connecting piece, the buffer block and the support mounting part are fitted and fixed, the support structure is simplified, the outer diameter design space of the buffer block is released, and it is beneficial to improve the stiffness and durability of the buffer block.

[0012] Furthermore, a first mounting hole is opened on the end surface of the mounting portion facing the buffer block, and the first connecting portion is arranged in the first mounting hole; a second mounting hole is opened on the end surface of the buffer block facing the mounting portion, and the second connecting portion is arranged in the second mounting hole.

[0013] Further, the shape of the first connecting portion is set to be cylindrical, and the shape of the first mounting hole is adapted to the first connecting portion.

[0014] Through the above technical solution, the first connecting part is adapted to the shape of the first mounting hole, and the first connecting part is installed in the first mounting hole during assembly, thereby realizing the connection between the connecting member and the support.

[0015] Furthermore, the first connecting portion is interference fit with the first mounting hole.

[0016] Through the above technical solution, the connection between the connector and the support is achieved by means of interference fit, thus ensuring the stability and reliability of the connection.

[0017] Furthermore, the second connecting portion includes a first component and a second component, the first component is shaped as a cylinder, and the second component is shaped as a sphere; the shape of the second mounting hole is adapted to the second connecting portion.

[0018] Through the above technical solution, by providing a cylindrical first component and a spherical second component, it is beneficial to increase the connection area between the second connecting part and the buffer block, thereby improving the strength and reliability of the connection.

[0019] Furthermore, the second connecting portion is interference fit with the second mounting hole.

[0020] Through the above technical solution, the connection between the connector and the buffer block is achieved by interference fit, ensuring the stability and reliability of the connection.

[0021] Furthermore, the plurality of connecting members are provided in three numbers, and the three connecting members are arranged at intervals along the mounting portion.

[0022] Furthermore, the connecting lines between the three connecting members form an equilateral triangle.

[0023] Through the above technical solution, the connection lines between the three connecting parts form an equilateral triangle, the force distribution of the structure is uniform, and it has good stability, which is conducive to ensuring the reliability of the connection.

[0024] Furthermore, a reinforcement ring is provided on the buffer block, and the reinforcement ring is sleeved on the outer circumference of the buffer block.

[0025] Through the above technical solution, by arranging a reinforcement ring on the outer periphery of the buffer block, the rigidity of the buffer block is further improved.

[0026] Compared with the prior art, the air spring buffer block installation structure described in this application has the following advantages:

[0027] The air spring buffer block mounting structure described in the present application includes a support, a buffer block and a plurality of connectors; the support includes a mounting portion, the end face of the mounting portion is arranged to fit with the end face of the buffer block, and a plurality of connectors are arranged between the mounting portion and the buffer block; the connector includes a first connector and a second connector that are integrally formed; the first connector is connected to the mounting portion; and the second connector is connected to the buffer block. By providing connectors, the present application realizes the fitting connection between the buffer block and the end face of the support mounting portion, eliminates the conventional groove structure design, simplifies the support structure, improves the outer diameter design space of the buffer block, and is conducive to improving the stiffness and durability of the buffer block.

[0028] Another object of the present application is to provide an air spring shock absorber assembly, comprising the air spring buffer block mounting structure as described above.

[0029] Optionally, the air spring shock absorber assembly also includes a bladder skin, a piston and a shock absorber; one end port of the bladder skin is connected to the support, and the other end port of the bladder skin is connected to the piston, and a receiving cavity is formed inside the bladder skin, and the buffer block is located in the receiving cavity; the shock absorber includes a piston rod, and the piston rod passes through the center of the piston and the buffer block in sequence, and is connected to the support.

[0030] The advantages of the air spring damping assembly and the air spring buffer block mounting structure described above relative to the prior art are the same and will not be described in detail here.

[0031] The present application also proposes a vehicle, including the air spring buffer block mounting structure as described above, or including the air spring shock absorbing assembly as described above.

[0032] The advantages of the vehicle and the above-mentioned air spring buffer block installation structure over the prior art are the same, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0034] Figure 1 It is an assembly diagram of an air spring buffer block installation structure in the related art;

[0035] Figure 2This is a schematic diagram of the assembly of the air spring buffer block installation structure described in an embodiment of the present application;

[0036] Figure 3 This is a structural schematic diagram of a support in the air spring buffer block installation structure described in an embodiment of the present application;

[0037] Figure 4 It is a structural schematic diagram of a buffer block in the air spring buffer block installation structure described in an embodiment of the present application;

[0038] Figure 5 This is a schematic structural diagram of a connecting piece in the air spring buffer block mounting structure described in an embodiment of the present application.

[0039] Description of reference numerals:

[0040] 01. Support in related technology; 02. Buffer block in related technology;

[0041] 1. Support; 11. Mounting part; 111. First mounting hole; 2. Buffer block; 21. Second mounting hole; 3. Connector; 31. First connecting part; 32. Second connecting part; 321. First component part; 322. Second component part; 4. Reinforcement ring; 5. Bladder skin; 6. Piston; 7. Piston rod. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0043] In addition, the directions or positional relationships indicated by "inside", "outside", "upper", "lower", "front", "back" and the like mentioned in the embodiments of the present application are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, relational terms such as "first" and "second" are merely used to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities, nor can they be understood as indicating or implying relative importance.

[0044] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0045] In the related art, the matching structure between the buffer block and the upper support usually adopts the form of snap-fitting: a groove structure is designed on the upper support base, and the buffer block is pressed into the upper support base through deformation. Based on this matching structure, in order to meet the requirements of the arrangement of the peripheral parts of the air spring and the internal clearance, the outer diameter of the buffer block cannot be made large enough, resulting in a small design margin of the height-to-diameter ratio of the buffer block, which affects the durability of the buffer block and cannot meet the more stringent durability requirements of new energy vehicles for the buffer block; in addition, in order to avoid position interference between the upper support and the internal piston at the extreme position, an avoidance design is required on the support, which will make the upper support structure complex and increase the processing cost.

[0046] Specific as Figure 1 As shown, a corresponding raised structure is formed on the edge of the groove of the support 01. During assembly, the buffer block 02 is pressed into the groove, and the outer periphery of the buffer block 02 is limited by the raised structure. In the limited internal space of the air spring, the existence of the raised structure makes it impossible for the outer diameter of the buffer block 02 to be made large enough, and the design margin of the height-to-diameter ratio of the buffer block 02 is small, which affects the stiffness and durability of the buffer block 02. However, the buffer block 02 is not stiff enough. Under extreme deflection conditions, the piston will over-compress the buffer block 02. At this time, due to the existence of the raised structure, the gap between the piston and the support 01 is too small. In order to avoid interference between the piston and the support 01, it is necessary to bevel the outer wall of the raised structure and the inner wall of the piston structure. The reduction of material will lead to a decrease in the local strength of the support 01 and the piston.

[0047] In view of this, an embodiment of the present application provides an air spring buffer block installation structure.

[0048] See also Figure 2 , an air spring buffer block mounting structure includes a support 1, a buffer block 2 and a plurality of connecting parts 3.

[0049] The support 1 includes a mounting portion 11 , an end surface of the mounting portion 11 is disposed in contact with an end surface of the buffer block 2 , and a plurality of connecting members 3 are disposed between the mounting portion 11 and the buffer block 2 .

[0050] The connecting member 3 includes a first connecting portion 31 and a second connecting portion 32 which are integrally formed; the first connecting portion 31 is connected to the mounting portion 11 ; and the second connecting portion 32 is connected to the buffer block 2 .

[0051] For details, see Figure 2The support 1 includes a mounting portion 11, which is located at the center of the support 1 and is used to connect with the buffer block 2. The end face of the mounting portion 11 facing the buffer block 2 is a plane, and the end face of the buffer block 2 facing the mounting portion 11 is also a plane, so the end face of the mounting portion 11 and the end face of the buffer block 2 can be completely fitted during assembly. A plurality of connectors 3 are arranged between the mounting portion 11 and the buffer block 2, and are used to connect and fix the mounting portion 11 to the buffer block 2. The connector 3 includes an integrally formed first connector 31 and a second connector 32, wherein the first connector 31 extends into the interior of the mounting portion 11 to connect therewith, and the second connector 32 extends into the interior of the buffer block 2 to connect therewith, so that, under the connecting action of the connector 3, the buffer block 2 and the mounting portion 11 of the support 1 are fitted and fixed.

[0052] The air spring buffer block mounting structure provided in the embodiment of the present application adopts a connection method of a connecting piece 3, which replaces the snap-fitting method of the buffer block 02 and the support 01 in the related art. There is no groove structure and a protrusion structure formed by the edge of the groove on the mounting portion 11 of the support 1. The end face of the mounting portion 11 is a plane, which can be directly fitted and fixed with the buffer block 2. On the one hand, the structure of the support 1 is simplified and the processing cost is reduced; on the other hand, the restriction on the outer periphery of the buffer block 2 is eliminated, and the outer diameter design space of the buffer block 2 is released, which is beneficial to improving the stiffness and durability of the buffer block 2; in addition, since there is no protrusion structure, the gap between the support 1 and the piston 6 is improved. Coupled with the improvement of the stiffness of the buffer block 2, the problem of interference between the piston 6 and the support 1 caused by excessive compression of the buffer block 2 by the piston 6 can be effectively avoided. There is no need to avoid it by cutting the inclined surface, thereby ensuring the local strength of the support 1 and the piston 6.

[0053] Furthermore, the shape of the first connecting portion 31 is set to be cylindrical, and a first mounting hole 111 is opened on the end surface of the mounting portion 11 facing the buffer block 2 , and the shape of the first mounting hole 111 is adapted to the first connecting portion 31 .

[0054] For details, see Figure 3 and Figure 5 The first connection part 31 is cylindrical in shape, and a first mounting hole 111 is provided on the end surface of the mounting part 11 of the support 1. The shape of the first mounting hole 111 is also set to be cylindrical, which is adapted to the first connection part 31. During assembly, the first connection part 31 is installed in the first mounting hole 111 to achieve the connection between the connector 3 and the support 1.

[0055] Furthermore, the first connecting portion 31 is interference fit with the first mounting hole 111 .

[0056] Specifically, the size of the first connecting portion 31 is slightly larger than the size of the first mounting hole 111 , so that there is an interference fit between the connecting member 3 and the support 1 , and a tight connection is achieved by interference fit.

[0057] In practical applications, the connection between the connector 3 and the support 1 can be achieved by using an interference fit process.

[0058] Interference fitting is a process method that uses the interference fit between parts to achieve connection. It is a non-detachable fixed connection between mechanical parts. This connection method has the characteristics of simple structure, high centering accuracy, ability to withstand axial and radial loads and high load-bearing capacity, and can work more reliably under impact loads. The use of interference fitting to achieve the connection between the connector 3 and the support 1 can ensure the reliability of the structure.

[0059] Furthermore, the second connecting portion 32 includes a first component part 321 and a second component part 322, the shape of the first component part 321 is set to be cylindrical, and the shape of the second component part 322 is set to be spherical; the buffer block 2 is provided with a second mounting hole 21 on the end surface facing the mounting portion 11, and the shape of the second mounting hole 21 is adapted to the second connecting portion 32.

[0060] See also Figure 5 The second connecting portion 32 includes a first component 321 and a second component 322, wherein the first component 321 is cylindrical in shape and has the same diameter as the first connecting portion 31, and the second component 322 is spherical in shape, and the diameter of the second component 322 is slightly larger than the diameter of the first component 321. Figure 4 The second mounting hole 21 is arranged on the end surface of the buffer block 2 facing the mounting portion 11 of the support 1. The second mounting hole 21 has two hole sections, wherein the first hole section is a cylindrical hole, which is adapted to the shape of the first component 321, and the second hole section is a spherical hole, which is adapted to the shape of the second component 322. In this way, the shape of the entire second mounting hole 21 is adapted to the shape of the second connecting portion 32. During assembly, the second connecting portion 32 is installed in the second mounting hole 21 to achieve the connection between the connector 3 and the buffer block 2.

[0061] By providing the cylindrical first component part 321 and the spherical second component part 322 , the connection area between the second connection part 32 and the buffer block 2 can be increased, thereby improving the strength and stability of the connection.

[0062] Furthermore, the second connecting portion 32 is interference-fitted with the second mounting hole 21 .

[0063] Specifically, the size of the first component 321 is slightly larger than the size of the first hole segment of the second mounting hole 21, and the size of the second component 322 is slightly larger than the size of the second hole segment of the second mounting hole 21, so that there is an interference fit between the connector 3 and the buffer block 2, and a tight connection is achieved by interference fit.

[0064] In practical applications, the connection between the connector 3 and the buffer block 2 can be achieved by using an interference fit process.

[0065] like Figure 5 As shown, in the embodiment of the present application, the connecting member 3 adopts an integrally formed positioning pin, which has a cylindrical rod and a spherical head, wherein the cylindrical rod can be regarded as two sections, the section away from the spherical head serves as the first connecting portion 31, which is pressed into the first mounting hole 111 in the mounting portion 11 of the support 1 during installation; and the section close to the spherical head serves as the second connecting portion 32 together with the spherical head, which is pressed into the second mounting hole 21 in the buffer block 2 during installation.

[0066] As an example, in this embodiment, the diameter of the cylindrical rod of the locating pin is set to 5 mm, and the diameter of the spherical head of the locating pin is set to 8 mm. In practical applications, the size of the locating pin can be flexibly adjusted according to the size of the support 1 and the buffer block 2 and the connection strength requirements.

[0067] Furthermore, the plurality of connecting members 3 are provided in three numbers, and the three connecting members 3 are arranged at intervals along the mounting portion.

[0068] Specifically, in this embodiment, three connecting members 3 are provided, and the three connecting members 3 are evenly distributed around the center of the support 1 and the buffer block 2. The connecting lines between the three connecting members 3 form an equilateral triangle. The structure is evenly stressed and has strong stability, which helps to improve the connection reliability between the support 1 and the buffer block 2.

[0069] In practical applications, the number of connecting members 3 can be flexibly adjusted according to the size of the support 1 and the buffer block 2 and the connection strength requirements.

[0070] Furthermore, a reinforcement ring 4 is provided on the buffer block 2 , and the reinforcement ring 4 is sleeved on the outer circumference of the buffer block 2 .

[0071] For details, see Figure 2 A reinforcing ring 4 is provided at one end of the buffer block 2 away from the support 1. The reinforcing ring 4 is sleeved on the outer periphery of the buffer block 2 to further improve the rigidity of the buffer block 2. The reinforcing ring 4 and the buffer block 2 can also be fixed by interference fit to ensure the stability and reliability of the connection.

[0072] The air spring buffer block installation structure provided in the embodiment of the present application uses a connector 3 to connect the buffer block 2 and the support 1, thereby achieving the fit and fixation between the buffer block 2 and the mounting portion 11 of the support 1, improving the outer diameter design space of the buffer block 2, and the outer diameter size of the buffer block 2 can be increased, reducing the aspect ratio, and improving the stiffness and durability of the buffer block 2; the support 1 structure is more simplified, providing a larger margin for the internal structure design of the air spring, and the outer diameter of the support 1 can also be increased according to the strength requirements of the vehicle. In addition, the gap between the piston 6 and the support 1 has also been improved, which can effectively avoid the problem of interference between the piston 6 and the support 1.

[0073] The embodiment of the present application also provides an air spring shock absorber assembly, including the air spring buffer block mounting structure as described above.

[0074] Optionally, the air spring shock absorber assembly also includes a bladder skin 5, a piston 6 and a shock absorber; one end port of the bladder skin 5 is connected to the support 1, and the other end port of the bladder skin 5 is connected to the piston 6, and a receiving cavity is formed inside the bladder skin 5, and the buffer block 2 is located in the receiving cavity; the shock absorber includes a piston rod 7, and the piston rod 7 passes through the center of the piston 6 and the buffer block 2 in sequence, and is connected to the support 1.

[0075] See also Figure 2 The air spring shock absorber assembly includes an air spring and a shock absorber, and the air spring is connected to the shock absorber. Among them, the air spring includes the above-mentioned air spring buffer block mounting structure, and also includes a bladder skin 5 and a piston 6. The upper end of the bladder skin 5 is sealed and connected to the support 1, and the lower end of the bladder skin 5 is sealed and connected to the piston 6. The interior of the bladder skin 5 forms a closed accommodating chamber, and the buffer block 2 is located in the accommodating chamber, and is connected and matched with the support 1 through a connecting piece 3. Mounting holes are opened at the center of the support 1, the buffer block 2, and the piston 6. The shock absorber includes a piston rod 7, and the piston rod 7 passes through the mounting holes in the center of the piston 6 and the buffer block 2 from the lower end in turn, enters the center of the support 1, and is connected and fixed to the support 1.

[0076] The advantages of the air spring damping assembly and the air spring buffer block mounting structure described above relative to the prior art are the same and will not be described in detail here.

[0077] The embodiments of the present application also provide a vehicle, including the air spring buffer block mounting structure as described above, or including the air spring shock absorbing assembly as described above.

[0078] The advantages of the vehicle and the above-mentioned air spring buffer block installation structure over the prior art are the same, which will not be repeated here.

[0079] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An air spring buffer block mounting structure, characterized in that: include: A support (1), a buffer block (2) and a plurality of connecting parts (3); The support (1) comprises a mounting portion (11), an end surface of the mounting portion (11) is arranged in close contact with an end surface of the buffer block (2), and a plurality of connecting members (3) are arranged between the mounting portion (11) and the buffer block (2); The connecting member (3) comprises a first connecting portion (31) and a second connecting portion (32) which are integrally formed; The first connecting portion (31) is connected to the mounting portion (11); The second connecting portion (32) is connected to the buffer block (2).

2. The air spring buffer block mounting structure according to claim 1, characterized in that: A first mounting hole (111) is provided on the end surface of the mounting portion (11) facing the buffer block (2), and the first connecting portion (31) is arranged in the first mounting hole (111); a second mounting hole (21) is provided on the end surface of the buffer block (2) facing the mounting portion (11), and the second connecting portion (32) is arranged in the second mounting hole (21).

3. The air spring buffer block mounting structure according to claim 2, characterized in that: The shape of the first connecting portion (31) is set to be cylindrical, and the shape of the first mounting hole (111) is adapted to the first connecting portion (31).

4. The air spring buffer block mounting structure according to claim 2, characterized in that: The first connecting portion (31) is interference-fitted with the first mounting hole (111).

5. The air spring buffer block mounting structure according to claim 2, characterized in that: The second connecting portion (32) comprises a first component portion (321) and a second component portion (322), the first component portion (321) is configured to be cylindrical in shape, and the second component portion (322) is configured to be spherical in shape; The shape of the second mounting hole (21) is adapted to the second connecting portion (32).

6. The air spring buffer block mounting structure according to claim 2, characterized in that: The second connecting portion (32) is interference-fitted with the second mounting hole (21).

7. The air spring buffer block mounting structure according to claim 1, characterized in that: The plurality of connecting members (3) are arranged in three pieces, and the three connecting members (3) are arranged at intervals along the mounting portion.

8. An air spring shock absorber assembly, characterized in that: It comprises the air spring buffer block mounting structure as described in any one of claims 1-7.

9. The air spring shock absorber assembly according to claim 8, characterized in that: The air spring shock-absorbing assembly also includes a bladder skin (5), a piston (6) and a shock absorber; One end port of the bladder skin (5) is connected to the support (1), and the other end port of the bladder skin (5) is connected to the piston (6); a receiving cavity is formed inside the bladder skin (5), and the buffer block (2) is located in the receiving cavity; The shock absorber comprises a piston rod (7), which passes through the center of the piston (6) and the buffer block (2) in sequence and is connected to the support (1).

10. A vehicle, characterized in that: It comprises the air spring buffer block mounting structure as described in any one of claims 1-7, or comprises the air spring shock absorbing assembly as described in any one of claims 8-9.

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