Frequency self-adaptive shock absorber

Abstract

The utility model discloses a frequency self-adaption shock absorber which comprises a piston assembly, a gasket is arranged at the lower end of the piston assembly, the gasket is a sheet-shaped gasket, a supporting pad is arranged at the lower end of the gasket and is of an annular table-shaped structure, and a piston rod is inserted into the center of the piston assembly and sequentially penetrates through the supporting pad, the gasket and the piston assembly. A frequency response valve system assembly is arranged at the upper end of the piston assembly, a milling flat groove is additionally formed in the surface of the piston rod, a supporting pad, a gasket, the piston assembly, a pressing pad and the frequency response valve system assembly are used for jointly constructing a flow channel, the machining mode of drilling of the piston rod is avoided through the flow channel, and therefore the production difficulty of a valve system is reduced, and the flow channel is convenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of damper flow channels, in particular to a frequency adaptive damper. Background Art

[0002] The main function of the shock absorber is to reduce vibration through damping, and the flow channel design determines the size and effect of damping. In the shock absorber, the design and optimization of the flow channel can significantly improve the shock absorption effect and reduce the noise and vibration impact on the surrounding environment. At the same time, the flow channel design also needs to consider the principles of fluid dynamics to ensure that the fluid flows smoothly in the shock absorber and avoid adverse effects such as fluid impact and vortex.

[0003] With the development of automobiles and the increasing pursuit of automobile comfort by modern people, the status of shock absorbers as an important component of automobile comfort has become increasingly prominent. Conventional passive shock absorbers can no longer fully adapt to the requirements of vehicle performance under multiple road conditions. For conventional passive shock absorbers, too hard shock absorbers can provide effective support at high speeds, but are relatively weak in filtering high-frequency vibrations. When a vehicle is traveling on rough roads, cobblestone roads or similar roads that can cause high-frequency vibrations of the entire vehicle, the vibration of the vehicle body is more obvious. Too soft shock absorbers can provide a comfortable riding experience on rough roads, but may face the problem of insufficient support at high speeds and on curves. Therefore, adaptive frequency shock absorbers are designed.

[0004] Adaptive shock absorber is a new type of shock absorber, whose design concept is to adapt to different vibration conditions by automatically adjusting the damping coefficient. This shock absorber can automatically adjust the damping under different road conditions and driving conditions to provide better driving comfort and stability. The flow channel design of the adaptive shock absorber needs to comprehensively consider factors such as the flow characteristics of the fluid, the damping coefficient, and the material properties to achieve the best shock absorption effect.

[0005] The conventional frequency response valve system needs to rely on drilling holes in the middle of the piston rod to form a flow channel, which makes the valve system difficult to process and clean. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a frequency adaptive shock absorber to solve the problem that the conventional frequency response valve system needs to rely on drilling holes in the middle of the piston rod to form a flow channel, which makes the valve system difficult to process and clean.

[0007] A frequency adaptive shock absorber comprises a piston assembly, wherein a gasket is arranged at the lower end of the piston assembly, the gasket is a sheet gasket, a support pad is arranged at the lower end of the gasket, the support pad is an annular table-shaped structure with a through hole at the center, a piston rod is inserted into the center of the piston assembly, the piston rod passes through the support pad, the gasket and the piston assembly in sequence, and a frequency response valve system assembly is arranged at the upper end of the piston assembly.

[0008] Furthermore, it also includes a frequency-responsive valve system component, which is composed of an outer cavity valve, which is a ring-shaped surrounding structure. An inner valve cavity is arranged inside the outer valve cavity, and the inner valve cavity is an inverted cavity structure. A cylindrical hole is dug at the center of the cavity. A valve plate is horizontally arranged inside the inner valve cavity, an O-ring is arranged at the lower end of the valve plate, a circulation valve plate is arranged at the lower end of the O-ring, and a valve seat is arranged at the lower end of the inner valve cavity. The valve seat is a columnar structure, and circular circulation holes are evenly distributed on its cylindrical surface. A columnar surrounding is also arranged at the center of the structure, surrounding the cavity that passes through the valve seat, a valve core assembly is arranged at the upper end of the valve seat, and a connecting seat is connected to the bottom of the outer valve cavity.

[0009] Furthermore, the frequency response valve system component is connected to the outer valve chamber via a connecting seat.

[0010] Furthermore, the flow valve sheet presses the O-ring upwards.

[0011] Furthermore, the connection seat is a columnar structure, the center of the structure is a three-level through hole that shrinks in sequence, and a symmetrical claw-shaped reflux groove is vertically arranged at the right end of the structure.

[0012] The beneficial effects of the utility model are as follows: the utility model adds a milled groove on the surface of the piston rod, and uses a support pad, a gasket, a piston assembly, a pressure pad, and a frequency response valve system assembly to jointly construct a flow channel, which avoids the processing method of drilling a piston rod, thereby reducing the production difficulty of the valve system, and the flow channel is easy to clean and can meet the functions of the frequency response valve system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a frequency adaptive vibration damper;

[0014] Figure 2 It is a schematic diagram of the structure of a frequency response valve system component of a frequency adaptive shock absorber;

[0015] Figure 3 It is a schematic diagram of the flow path of a frequency adaptive shock absorber.

[0016] In the figure: 1-piston rod, 2-support pad, 3-gasket, 4-piston assembly, 5-pressure pad, 6-frequency response valve system assembly, 7-external valve chamber, 8-inner valve chamber, 9-valve plate, 10-O-ring, 11-circulation valve plate, 12-valve seat, 13-valve core assembly, 14-connecting seat. DETAILED DESCRIPTION

[0017] The following is an explanation of the implementation of the present invention by specific specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to the implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, many specific details will be included in the following description. The present utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. It should be noted that in this specification, similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures.

[0018] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "set", "connected", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances. The directions or positional relationships indicated by “upper”, “lower”, “left”, “right”, “inner”, “bottom”, etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0019] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] In this embodiment, as shown in the attached Figure 1As shown, a frequency adaptive shock absorber includes a piston assembly 4, a gasket 3 is arranged at the lower end of the piston assembly 4, the gasket 3 is a sheet gasket, a support pad 2 is arranged at the lower end of the gasket 3, the support pad 2 is an annular table structure with a through hole at the center, a piston rod 1 is inserted at the center of the piston assembly 4, the piston rod 1 passes through the support pad 2, the gasket 3 and the piston assembly 4 in sequence, and a frequency response valve system assembly 6 is arranged at the upper end of the piston assembly 4.

[0021] like Figure 2 As shown, it also includes a frequency response valve system component 6, which is composed of an outer cavity valve 7. The outer cavity valve 7 is a ring-shaped surrounding structure. An inner valve cavity 8 is arranged inside the outer valve cavity 7. The inner valve cavity 8 is an inverted cavity structure. A cylindrical hole is dug at the center of the cavity. A valve plate 9 is horizontally arranged inside the inner valve cavity 8. An O-ring 10 is arranged at the lower end of the valve plate 9. A circulation valve plate 11 is arranged at the lower end of the O-ring 10. A valve seat 12 is arranged at the lower end of the inner valve cavity 8. The valve seat 12 is a columnar structure, and circular circulation holes are evenly distributed on its cylindrical surface. A columnar surrounding is also arranged at the center of the structure, which surrounds the cavity that passes through the valve seat 12. A valve core component 13 is arranged at the upper end of the valve seat 12, and a connecting seat 14 is connected to the bottom of the outer valve cavity 7.

[0022] The frequency response valve system component (6) is connected to the outer valve chamber (7) via a connecting seat (14).

[0023] The flow valve plate (11) presses the O-ring (10) upwards.

[0024] The connection seat (14) is a columnar structure, with three levels of sequentially shrinking through holes at the center of the structure, and a symmetrical claw-shaped reflow groove vertically arranged at the right end of the structure.

[0025] The working principle of the utility model is as follows: Figure 3 As shown in the figure, when the product is running at a low frequency, that is, when the vehicle is traveling on a normal road, the liquid flow rate per unit time is low, such as Figure 3As shown, the flow channel III of the liquid is unobstructed, so P1=P3. Since the area of ​​the P3 region is larger than the area of ​​the P1 region, the direction of the force F on the valve core assembly 13 is negative, so the valve core assembly 13 can be close to the valve seat 12, and the valve will not open, thereby ensuring that the high-frequency valve does not work in this state, maintaining the original performance of the product. When the product is running at high frequency, that is, when the vehicle is traveling on a rough road, due to the large flow rate of the liquid per unit time, the flow channel III of the liquid reaches the condition of small hole blockage, so P1>P2. When a certain pressure difference is reached, the direction of the force F on the valve core assembly 13 is positive, so the valve core assembly 13 cannot be close to the valve seat 12, and the valve will open, thereby ensuring that the high-frequency valve starts to work in this state, and the fluid flows along the flow channel I and the flow channel II, which is equivalent to adding a flow channel to the original product structure, thereby reducing the damping force of the product, changing the original performance of the product, and improving the comfort of the whole vehicle. When the vehicle returns to the full vehicle road, the flow valve plate 11 can quickly make the valve core assembly 13 close to the valve seat 12, thereby ensuring that the product returns to its original product performance and ensuring the normal driving of the vehicle.

[0026] The beneficial effects of the utility model are as follows: the utility model adds a milled groove on the surface of the piston rod, and uses a support pad, a gasket, a piston assembly, a pressure pad, and a frequency response valve system assembly to jointly construct a flow channel, which avoids the processing method of drilling a piston rod, thereby reducing the production difficulty of the valve system, and the flow channel is easy to clean and can meet the functions of the frequency response valve system.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A frequency adaptive vibration damper, characterized in that: The piston assembly (4) comprises a gasket (3) disposed at the lower end of the piston assembly (4), the gasket (3) being a sheet-shaped gasket, a support pad (2) disposed at the lower end of the gasket (3), the support pad (2) being an annular table-shaped structure with a through hole at the center, a piston rod (1) inserted at the center of the piston assembly (4), the piston rod (1) passing through the support pad (2), the gasket (3) and the piston assembly (4) in sequence, and a frequency response valve system assembly (6) disposed at the upper end of the piston assembly (4); The frequency response valve system assembly (6) is composed of an outer valve cavity (7), the outer valve cavity (7) is an annular surrounding structure, an inner valve cavity (8) is arranged inside the outer valve cavity (7), the inner valve cavity (8) is an inverted cavity structure, a cylindrical hole is dug at the center of the cavity, a valve plate (9) is arranged horizontally inside the inner valve cavity (8), an O-ring (10) is arranged at the lower end of the valve plate (9), a flow valve plate (11) is arranged at the lower end of the O-ring (10), a valve seat (12) is arranged at the lower end of the inner valve cavity (8), the valve seat (12) is a columnar structure, and circular flow holes are evenly distributed on its cylindrical surface. A columnar surrounding is also arranged at the center of the structure, surrounding the cavity that passes through the valve seat (12), a valve core assembly (13) is arranged at the upper end of the valve seat (12), and a connecting seat (14) is arranged at the bottom of the outer valve cavity (7).

2. A frequency adaptive vibration damper according to claim 1, characterized in that: The frequency response valve system component (6) is connected to the outer valve chamber (7) via a connecting seat (14).

3. The frequency adaptive vibration damper according to claim 1, characterized in that: The flow valve plate (11) presses the O-ring (10) upwards.

4. The frequency adaptive vibration damper according to claim 1, characterized in that: The connection seat (14) is a columnar structure, with three levels of sequentially shrinking through holes at the center of the structure, and a symmetrical claw-shaped reflow groove vertically arranged at the right end of the structure.

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