Variable flexible piston for vehicle shock absorber

Abstract

The invention discloses a variable flexible piston for a vehicle shock absorber, and relates to the technical field of vehicle shock absorption, the variable flexible piston is applied to the vehicle shock absorber, the vehicle shock absorber comprises a piston cylinder, a piston rod is arranged in the piston cylinder, one end of the piston rod is connected with a piston, and the piston comprises a fixing plate fixed to one end of the piston rod; one side of the fixed plate is fixedly connected with a fixed rod, the fixed rod is sleeved with a movable sleeve, one side of the movable sleeve is fixedly connected with a movable plate, and the fixed rod and the movable sleeve are both sleeved with middle movable plates. In the movement process of the piston, the flexible film changes along with movement of the piston rod, direct contact between the piston assembly and the cylinder is reduced, heat generated in the movement process of the piston assembly is reduced, damage to the piston assembly is reduced, and the service life of the shock absorber is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of automobile vibration reduction, in particular to a variable flexible piston used in a vehicle shock absorber. Background Art

[0002] In order to quickly attenuate the vibration of the frame and body and improve the smoothness and comfort of the car's driving, shock absorbers are generally installed on the car's suspension system. In the structure of the car shock absorber, it is generally a piston structure, and its piston body divides the inside of the shock absorber into different cavities. The volume of the cavity is changed by the movement of the piston, so that the oil in different cavities is exchanged. The oil consumes energy during the flow process, thereby achieving the effect of vibration reduction.

[0003] In the existing shock absorber structure, since the piston body is required to separate the shock absorber into different cavities, the piston body is generally a rigid structure and needs to contact the inner wall of the cylinder. In this way, the piston body will repeatedly rub against the inner wall of the cylinder during movement, and the heat generated by the friction will cause damage to the shock absorber.

[0004] A flexible piston shock absorber for a vehicle is proposed in the Chinese patent publication number CN113969952A. After studying the prior art and the above patent, the present invention proposes a variable flexible piston for a vehicle shock absorber. Summary of the invention

[0005] Technical issues solved

[0006] The purpose of the present invention is to make up for the deficiencies of the prior art and provide a variable flexible piston used in a vehicle shock absorber.

[0007] Technical Solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a variable flexible piston used in a vehicle shock absorber, the piston comprising a fixed plate fixed to one end of a piston rod, a fixed rod fixedly connected to one side of the fixed plate, a movable sleeve sleeved on the fixed rod, a movable plate fixedly connected to one side of the movable sleeve, an intermediate movable plate sleeved on the fixed rod and the movable sleeve, a flexible membrane is arranged on the outside of the fixed plate, the movable plate and the intermediate movable plate, and a spring is arranged between the fixed plate, the movable plate and the intermediate movable plate.

[0009] The piston is applied to a vehicle shock absorber, which comprises a piston cylinder, a piston rod is arranged inside the piston cylinder, and the fixing plate is fixedly mounted on the piston rod by bolts.

[0010] When the vehicle passes over a raised condition, the two piston rods arranged up and down in the piston cylinder approach each other, causing the flexible membrane to stretch and increase in volume, resulting in energy consumption and a vibration reduction effect. When the vehicle passes over a sunken condition, the two piston rods arranged up and down in the piston cylinder move away from each other and shrink, resulting in energy consumption and a vibration reduction effect. During the movement of the piston, the volume of the flexible membrane changes with the movement of the piston rod, reducing the direct contact between the piston assembly and the cylinder body, thereby reducing the heat generated during the movement of the piston assembly, reducing damage to the piston assembly, and increasing the life of the shock absorber.

[0011] Preferably, there are gaps between the fixed plate, the movable plate and the middle movable plate, and the spring is arranged between the gaps.

[0012] Preferably, one end of the spring is fixedly connected to the middle movable plate, and the other end of the spring is fixed to the fixed plate, the movable plate or the middle movable plate.

[0013] Preferably, the cross section of the fixing rod is rectangular, the interior of the movable sleeve is provided with a rectangular hole adapted to the fixing rod, and the fixing rod is inserted into the rectangular hole.

[0014] Preferably, there are multiple intermediate movable plates, each of which is provided with a slider, and each of the fixed rod and the movable sleeve is provided with a slide groove, and the slider can be movably installed inside the slide groove.

[0015] Preferably, there are multiple springs.

[0016] Beneficial effects:

[0017] Compared with the prior art, the variable flexible piston used in the vehicle shock absorber has the following beneficial effects:

[0018] The flexible piston of the present invention has two piston rods arranged up and down in the piston cylinder approaching each other when the vehicle passes through a raised condition, thereby causing the flexible membrane to stretch and increase in volume, resulting in energy consumption and achieving a vibration reduction effect. When the vehicle passes through a sunken condition, the two piston rods arranged up and down in the piston cylinder move away from each other and shrink, thereby reducing in volume and achieving energy consumption and achieving a vibration reduction effect. During the movement of the piston, the volume of the flexible membrane changes with the movement of the piston rod, thereby reducing the direct contact between the piston assembly and the cylinder body, thereby reducing the heat generated during the movement of the piston assembly, reducing damage to the piston assembly, and increasing the life of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the flexible piston of the present invention.

[0022] In the figure:

[0023] 1. Piston cylinder; 2. Piston rod; 3. Flexible piston; 301. Fixed plate; 302. Fixed rod; 303. Movable sleeve; 304. Movable plate; 305. Intermediate movable plate; 306. Slide groove; 307. Gap; 308. Spring; 309. Flexible membrane; 3031. Rectangular hole; 3051. Slider. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-2As shown, the present invention provides a technical solution: a variable flexible piston used in a vehicle shock absorber is applied to a vehicle shock absorber, the vehicle shock absorber comprises a piston cylinder 1, the interior of the piston cylinder 1 is provided with a piston rod 2, one end of the piston rod 2 is connected to a piston 3, the piston 3 comprises a fixed plate 301 fixed to one end of the piston rod 2, the fixed plate 301 is fixedly installed on the piston rod 2 by bolts, one side of the fixed plate 301 is fixedly connected to a fixed rod 302, the fixed rod 302 is sleeved with a movable sleeve 303, one side of the movable sleeve 303 is fixedly connected to a movable plate 304, the fixed rod 302 and the movable sleeve 303 are both sleeved with an intermediate movable plate 305, the fixed plate 301, the movable plate 304 and the intermediate movable plate 305 are provided with a flexible membrane 309 on the outside, and the fixed plate 301, the movable plate 304 and the intermediate movable plate 305 are provided with a flexible membrane 309 on the outside, and the fixed plate 301 01. A spring 308 is arranged between the movable plate 304 and the middle movable plate 305. When the vehicle passes through a raised condition, the two piston rods 2 arranged up and down in the piston cylinder 1 approach each other, thereby causing the flexible membrane 309 to stretch and increase in volume, resulting in energy consumption and a shock absorbing effect. When the vehicle passes through a sunken condition, the two piston rods 2 arranged up and down in the piston cylinder 1 move away from each other and shrink, resulting in energy consumption and a shock absorbing effect. During the movement of the piston, the flexible membrane 15 changes with the movement of the piston rod, reducing the direct contact between the piston assembly and the cylinder body, thereby reducing the heat generated during the movement of the piston assembly, reducing damage to the piston assembly, and increasing the life of the shock absorber.

[0026] Please pay attention to Figure 2 There is a gap 307 between the fixed plate 301, the movable plate 304 and the middle movable plate 305, and the spring 308 is arranged between the gap 307. There are multiple springs 308, one end of the spring 308 is fixedly connected to the middle movable plate 305, and the other end of the spring 308 is fixed on the fixed plate 301, the movable plate 304 or the middle movable plate 305.

[0027] The cross section of the fixed rod 302 in the present application is rectangular, and the inside of the movable sleeve 303 is provided with a rectangular hole 3031 adapted to the fixed rod 302, and the fixed rod 302 is inserted into the rectangular hole 3031, and there are multiple intermediate movable plates 305, and the multiple intermediate movable plates 305 are provided with sliders 3051, and the fixed rod 302 and the movable sleeve 303 are provided with slide grooves 306, and the slider 3051 can be movably installed in the slide groove 306. The way in which the slider 3051 is movably installed in the slide groove is, for example, that a guide rail is installed in the slide groove, the slider is installed on the guide rail, and slides with the guide rail, and the slider is fixedly installed at one end of the intermediate movable plate 305, and when the slider slides along the guide rail, the intermediate movable plate 305 moves up and down.

[0028] Working principle: When the vehicle passes through a raised condition, the two piston rods 2 arranged up and down in the piston cylinder 1 approach each other, causing the flexible membrane 309 to stretch and increase in volume, resulting in energy consumption and a vibration reduction effect. When the vehicle passes through a sunken condition, the two piston rods 2 arranged up and down in the piston cylinder 1 move away from each other and shrink, resulting in a reduction in volume and energy consumption, thus achieving a vibration reduction effect.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] The above description only describes the specific implementation mode of the present invention. Various examples do not limit the essential content of the present invention. After reading the description, ordinary technicians in the relevant technical field can modify or deform the specific implementation mode described above without departing from the essence and scope of the invention.

Claims

1. A variable flexible piston for a vehicle shock absorber, characterized in that: The piston (3) comprises a fixed plate (301), one side of the fixed plate (301) is fixedly connected to a fixed rod (302), the fixed rod (302) is sleeved with a movable sleeve (303), one side of the movable sleeve (303) is fixedly connected to a movable plate (304), the fixed rod (302) and the movable sleeve (303) are both sleeved with an intermediate movable plate (305), the fixed plate (301), the movable plate (304) and the intermediate movable plate (305) are provided with flexible membranes (309) on the outside, and a spring (308) is provided between the fixed plate (301), the movable plate (304) and the intermediate movable plate (305).

2. The variable flexible piston used in the vehicle shock absorber according to claim 1, characterized in that: There are gaps (307) between the fixed plate (301), the movable plate (304) and the middle movable plate (305), and the spring (308) is arranged between the gaps (307).

3. The variable flexible piston used in the vehicle shock absorber according to claim 1, characterized in that: One end of the spring (308) is fixedly connected to the middle movable plate (305), and the other end of the spring (308) is fixed on the fixed plate (301), the movable plate (304) or the middle movable plate (305).

4. The variable flexible piston used in the vehicle shock absorber according to claim 1, characterized in that: The cross section of the fixing rod (302) is rectangular, and a rectangular hole (3031) adapted to the fixing rod (302) is arranged inside the movable sleeve (303), and the fixing rod (302) is inserted into the rectangular hole (3031).

5. The variable flexible piston used in the vehicle shock absorber according to claim 1, characterized in that: There are multiple intermediate movable plates (305), each of which is provided with a slider (3051), and each of the fixed rod (302) and the movable sleeve (303) is provided with a slide groove (306), and the slider (3051) can be movably installed inside the slide groove (306).

6. The variable flexibility piston used in the vehicle shock absorber according to claim 1, characterized in that: The number of the springs (308) is plural.

7. The variable flexibility piston used in the vehicle shock absorber according to claim 1, characterized in that: The piston is used in a vehicle shock absorber, which comprises a piston cylinder (1), a piston rod (2) is arranged inside the piston cylinder (1), and the fixing plate (301) is fixedly mounted on the piston rod (2) by means of bolts.

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