Buffer block structure in air spring

Abstract

The utility model relates to an air spring inner buffer block structure which comprises a buffer block body, a convex ring portion and a limiting groove, the convex ring portion is formed by extending outwards from the top surface of the upper end portion of the buffer block body, and the limiting groove is formed in the lower bottom face of the upper end portion of the buffer block body and used for containing a hook portion of an upper top seat of an air spring. The buffer block body is prevented from sliding down and falling off; meanwhile, an annular sinking table is arranged between the convex ring part and the opening of the axial through hole in the top surface of the buffer block body, when the lower end face of the lower boss makes contact with the sinking table, the lower boss is located in the middle through hole of the convex ring part, and the situation that the buffer block body slides down and falls off due to radial deformation reduction of the buffer block body can be effectively prevented. Therefore, the buffer block solves the problem that the clamping part of the buffer block body is easy to deform and fall off due to the volume change of air in the air spring, the use reliability of the buffer block is improved, the service life of the buffer block is prolonged, and the driving safety consciousness is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of air springs, in particular to an internal buffer block structure of an air spring. Background Art

[0002] The buffer block is a part installed in the air spring. It has two main functions. One is to absorb buffer energy and realize the role of elastic element together with the air spring within a certain range. The other is to limit the displacement of the wheel when the air spring is compressed to the limit position. The material of the buffer block is polyurethane, which has strong molecular bonding ability, hydrolysis resistance, low temperature resistance and excellent elasticity. The prior art is to apply glue to the lower end face and the clamping position of the buffer block installed in the upper air chamber, and then press the buffer block to the glue-coated position of the upper air chamber through the action of force. Therefore, the installation and fixing of the buffer block is partly through glue coating, and the other part is fixed by clamping the upper edge of the buffer block by two symmetrical hooks at the lower end of the upper air chamber. However, after the air spring is installed, it will experience a lot of strong external impacts transmitted to the air spring through the wheel, thereby generating strong vibration, deflection, rotation and other movements, causing the air pressure in the air spring to change rapidly, and the buffer block also undergoes a large deformation due to its own material properties. When the buffer block is compressed and becomes smaller, it is easy to detach from the upper air chamber, which poses a great safety hazard.

[0003] Therefore, it is necessary to design a buffer block structure inside the air spring to solve the problem that after the buffer block is compressed, especially the buffer block shrinks radially and becomes smaller and separates from the upper air chamber of the air spring. Utility Model Content

[0004] In view of some shortcomings of the above-mentioned prior art, the utility model provides a buffer block structure inside an air spring. Through the design of the buffer block structure, the convex ring portion of the buffer block and the upper top seat of the air spring form a limited installation, and the limiting groove of the buffer block accommodates the hook portion of the air spring, both of which limit the shrinkage and deformation of the buffer block, thereby solving the problem that the buffer block shrinks and deforms after being compressed and is easily separated from the upper air chamber of the air spring.

[0005] The utility model provides an inner buffer block structure of an air spring, comprising:

[0006] The buffer block body is coaxially sleeved on the piston rod of the air spring through an axial through hole;

[0007] A convex ring portion extending outward from a top surface of an upper end portion of the buffer block body; and

[0008] A limiting groove is provided on the lower bottom surface of the upper end of the buffer block body and is used to receive the hook portion of the upper top seat of the air spring;

[0009] Wherein, an annular sink is provided between the convex ring portion and the opening of the axial through hole on the top surface of the buffer block body, which is used to contact the lower end surface of the lower boss of the upper seat of the air spring.

[0010] In one embodiment of the present invention, the hook portion of the upper seat at least includes a hook end extending upward, and the limiting groove corresponds to a hook-shaped groove.

[0011] In one embodiment of the present invention, the limiting groove is formed on the lower bottom surface of the upper end of the buffer block body corresponding to the convex ring portion and is close to the outer cylindrical surface of the buffer block body.

[0012] In an embodiment of the present invention, a convex hook portion is formed between the limiting groove and the outer cylindrical surface of the convex ring portion.

[0013] In one embodiment of the present invention, the convex hook portion and the hook portion of the upper seat are hooked with each other.

[0014] In one embodiment of the utility model, a circular ring frame is further included. The circular ring frame is arranged in the axial through hole of the buffer block body, and the upper end surface of the circular ring frame is in corresponding contact with the lower end surface of the lower boss of the upper top seat.

[0015] In one embodiment of the present invention, the axial through hole of the buffer block body is a stepped hole, and the axial holes of the buffer block body are sequentially arranged from bottom to top as a first through hole, a second through hole and a third through hole.

[0016] In one embodiment of the utility model, the apertures of the first through hole, the second through hole and the third through hole become larger in sequence, the annular frame is arranged in the second through hole and close to the inner side surface of the sinker, the third through hole is the middle through hole of the convex ring part, and the sinker forms the bottom wall of the third through hole, and the lower boss of the upper seat of the air spring is arranged in the third through hole.

[0017] In one embodiment of the present invention, the annular frame is a metal or nylon support ring, and its hardness is more than 10 times that of the buffer block body.

[0018] In one embodiment of the utility model, an annular groove is opened in the middle of the lower end surface of the upper top seat, and the upper top seat protrudes downward at the opening of its central hole to form a lower boss. The lower annular groove and the convex ring part cooperate so that the lower boss is arranged in the middle through hole of the convex ring part.

[0019] The beneficial technical effects of the utility model include at least:

[0020] (1) The utility model provides an internal buffer block structure of an air spring, including a buffer block body, a convex ring portion and a limiting groove. The convex ring portion is formed by extending outward from the top surface of the upper end portion of the buffer block body, and the limiting groove is provided on the lower bottom surface of the upper end portion of the buffer block body, and is used to accommodate the hook portion of the upper top seat of the air spring to prevent the buffer block body from sliding down and falling off. At the same time, an annular sink is provided between the convex ring portion and the opening of the axial through hole on the top surface of the buffer block body. When the lower end surface of the lower boss contacts the sink, the lower boss is located in the middle through hole of the convex ring portion, which can effectively prevent the radial deformation of the buffer block body from shrinking and causing the buffer block body to slide down and fall off. Therefore, the utility model solves the problem that the clamping part of the buffer block body is easily deformed and thus falls off due to the volume change of the gas inside the air spring, increases the reliability of the buffer block, prolongs the service life of the buffer block, and enhances driving safety awareness.

[0021] (2) The utility model provides an internal buffer block structure of an air spring, which also includes a circular ring skeleton with appropriate hardness. The upper end surface of the circular ring skeleton is in corresponding contact with the lower end surface of the lower boss of the upper top seat. The circular ring skeleton is arranged in the second through hole, close to the inner side surface of the sinking platform. The lower boss of the upper top seat of the air spring is arranged in the third through hole. The circular ring skeleton can further prevent the radial shrinkage and deformation of the buffer block body, and further prevent the buffer block body from sliding down and falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of an inner buffer block of an air spring provided in one embodiment of the utility model;

[0023] Figure 2 The present invention is a schematic structural diagram of an air spring provided in one embodiment of the present invention.

[0024] Component Symbols:

[0025] An inner buffer block structure of an air spring, comprising:

[0026] The buffer block body 1, the convex ring part 11, the sink 111, the limiting groove 12, the circular ring frame 13, the first through hole 14, the second through hole 15, the third through hole 16, the air spring 2, the piston rod 21, the upper top seat 22, the lower boss 221, the hook part 23, and the convex hook part 231. DETAILED DESCRIPTION

[0027] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0028] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0029] In the following description, a large number of details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0030] See also Figure 1 and Figure 2 The utility model discloses an internal buffer block structure of an air spring, comprising a buffer block body 1, a convex ring portion 11 and a limiting groove 12. The buffer block body 1 is coaxially sleeved on the piston rod 21 of the air spring 2 through an axial through hole, the convex ring portion 11 is formed by extending outward from the top surface of the upper end of the buffer block body 1, and the limiting groove 12 is provided on the lower bottom surface of the upper end of the buffer block body 1, and is used to accommodate the hook portion 23 of the upper top seat 22 of the air spring 2; wherein, an annular sink 111 is provided between the convex ring portion 11 and the opening of the axial through hole on the top surface of the buffer block body 1, and is used to contact the lower end surface of the lower boss 221 of the upper top seat 22 of the air spring 2.

[0031] The above-mentioned limiting groove 12 accommodates the hook portion 23 of the upper top seat 22 of the air spring 2. The middle part of the lower end surface of the upper top seat 22 is provided with an annular groove. The upper top seat 22 protrudes downward at the opening of its central hole to form a lower boss 221. The annular groove cooperates with the convex ring portion 11, so that the lower boss 221 is arranged in the middle through hole of the convex ring portion 11, so that the lower end surface of the lower boss 221 of the upper top seat 22 of the air spring 2 contacts the sinking platform 111. All of them limit the contraction of the buffer block body 1, especially the contraction deformation in the radial direction, and prevent the buffer block body 1 from contracting and deforming and detaching from the upper air chamber of the air spring 2.

[0032] In one embodiment of the utility model, the hook portion 23 at least includes a hook end extending upward, and the limiting groove 12 corresponds to a hook-shaped groove. The limiting groove 12 corresponds to the convex ring portion 11 and is opened on the lower bottom surface of the buffer block body 1, and is close to the outer cylindrical surface of the buffer block body 1. A convex hook portion 231 is formed between the limiting groove 12 and the outer cylindrical surface of the convex ring portion 11. The convex hook portion 231 and the hook portion 23 of the upper seat 22 are hooked with each other, thereby providing the buffer block body 1 with an upward pulling force, which can effectively prevent the buffer block body 1 from sliding downward along the piston rod 21 of the air spring 2. The problem that the clamping part of the buffer block body is easily deformed and thus falls off due to the volume change of the gas inside the air spring is solved, the reliability of the buffer block is increased, the service life of the buffer block is extended, and the driving safety awareness is enhanced.

[0033] In one embodiment of the utility model, a circular skeleton 13 is also included. The circular skeleton 13 is arranged in the axial through hole of the buffer block body 1, and the upper end surface of the circular skeleton 13 is in contact with the lower end surface of the lower boss 221 of the upper top seat 22. The circular skeleton 13 is a metal or nylon support ring, and its hardness is more than 10 times the hardness of the buffer block body 1. The axial through hole of the buffer block body 1 is a step hole, and along the axial direction of the buffer block body 1 from bottom to top are the first through hole 14, the second through hole 15 and the third through hole 16. The apertures of the first through hole 14, the second through hole 15 and the third through hole 16 are gradually increased. The circular skeleton 13 is arranged in the second through hole 15 and the inner side surface of the tightening platform 111. The third through hole 16 is the middle through hole of the convex ring part 11, and the sinking platform 111 forms the bottom wall of the third through hole 16. The lower boss 221 of the upper top seat 22 of the air spring 2 is arranged in the third through hole 16. A skeleton material with appropriate hardness is added to prevent radial shrinkage and deformation of the clamping part of the buffer block body 1, and prevent the buffer block body 1 from sliding down and falling off.

[0034] In summary, the utility model provides an internal buffer block structure of an air spring, comprising a buffer block body 1, a convex ring portion 11 and a limiting groove 12. The buffer block body 1 is coaxially sleeved on the piston rod 21 of the air spring 2 through an axial through hole, the convex ring portion 11 is formed by extending outward from the top surface of the upper end of the buffer block body 1, and the limiting groove 12 is provided on the lower bottom surface of the upper end of the buffer block body 1, and is used to accommodate the hook portion 23 of the upper top seat 22 of the air spring 2, so as to prevent the buffer block body 1 from sliding down and falling off. At the same time, an annular sinking platform 111 is provided between the convex ring portion 11 and the opening of the axial through hole on the top surface of the buffer block body 1, so as to contact the lower end surface of the lower boss 221 of the upper top seat 22 of the air spring 2, and when the lower end surface of the lower boss 221 contacts the sinking platform 111, the lower boss 221 is located in the middle through hole of the convex ring portion 11, which can effectively prevent the radial deformation of the buffer block body 1 from shrinking and causing the buffer block body 1 to slide down and fall off. It can effectively solve the problem that the clamping part of the buffer block body 1 is easily deformed and thus falls off due to the volume change of the gas inside the air spring 2, increase the reliability of the buffer block, extend the service life of the buffer block, and enhance driving safety awareness.

[0035] The flow chart and block diagram in the accompanying drawings illustrate the possible implementation architecture, function and operation of the method and computer program product according to various embodiments of the utility model. In this regard, each box in the flow chart or block diagram can represent a module, a program segment, or a part of a code, and the module, the program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An air spring internal buffer block structure, characterized in that: include: A buffer block body (1), wherein the buffer block body (1) is coaxially sleeved on a piston rod (21) of an air spring (2) through an axial through hole; a convex ring portion (11), the convex ring portion (11) extending outward from a top surface of an upper end portion of the buffer block body (1); and A limiting groove (12), the limiting groove (12) being formed on the lower bottom surface of the upper end portion of the buffer block body (1) and being used for accommodating a hook portion (23) of an upper top seat (22) of the air spring (2); Wherein, an annular sink (111) is provided between the convex ring portion (11) and the opening of the axial through hole on the top surface of the buffer block body (1), which is used to contact the lower end surface of the lower boss (221) of the upper top seat (22) of the air spring (2).

2. The air spring internal buffer block structure according to claim 1, characterized in that: The hook portion (23) of the upper seat (22) at least comprises a hook end extending upward, and the limiting groove (12) corresponds to a hook-shaped groove.

3. The air spring internal buffer block structure according to claim 1, characterized in that: The limiting groove (12) is opened on the lower bottom surface of the upper end of the buffer block body (1) corresponding to the convex ring portion (11) and is close to the outer cylindrical surface of the buffer block body (1).

4. The air spring internal buffer block structure according to claim 3, characterized in that: A convex hook portion (231) is formed between the limiting groove (12) and the outer cylindrical surface of the convex ring portion (11).

5. The air spring internal buffer block structure according to claim 4, characterized in that: The convex hook portion (231) and the hook portion (23) of the upper seat (22) are hooked with each other.

6. The air spring internal buffer block structure according to claim 1, characterized in that: It also includes a circular ring skeleton (13), which is arranged in the axial through hole of the buffer block body (1), and the upper end surface of the circular ring skeleton (13) is in corresponding contact with the lower end surface of the lower boss (221) of the upper top seat (22).

7. The air spring internal buffer block structure according to claim 6, characterized in that: The axial through hole of the buffer block body (1) is a stepped hole, and along the axial direction of the buffer block body (1) from bottom to top there are a first through hole (14), a second through hole (15) and a third through hole (16).

8. The air spring internal buffer block structure according to claim 7, characterized in that: The apertures of the first through hole (14), the second through hole (15) and the third through hole (16) are successively larger; the annular skeleton (13) is arranged in the second through hole (15) and close to the inner side surface of the sinker (111); the third through hole (16) is the middle through hole of the convex ring portion (11), and the sinker (111) forms the bottom wall of the third through hole (16); the lower boss (221) of the upper seat (22) of the air spring (2) is arranged in the third through hole (16).

9. An air spring internal buffer block structure according to claim 7 or 8, characterized in that: The circular ring skeleton (13) is in the shape of a metal or nylon support ring, and its hardness is more than 10 times that of the buffer block body (1).

10. The air spring inner buffer block structure according to claim 1, characterized in that: An annular groove is provided in the middle of the lower end surface of the upper top seat (22); the upper top seat (22) protrudes downward at the opening of its central hole to form the lower boss (221); the annular groove cooperates with the convex ring portion (11) so that the lower boss (221) is arranged in the middle through hole of the convex ring portion (11).

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