CN113931966A

CN113931966A - Shock absorber assembly

Info

Publication number: CN113931966A
Application number: CN202111355310.1A
Authority: CN
Inventors: 陈瑛瑛; 郑念辉; 周亚俊; 吕瑛瑛; 林兵荣
Original assignee: Add Industry Zhejiang Corp ltd
Current assignee: Add Industry Zhejiang Corp ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-01-14

Abstract

The invention relates to the technical field of shock absorbers, in particular to a shock absorber assembly. The piston rod is movably arranged in the first cylinder body, the second cylinder body is arranged on the outer side of the first cylinder body, the third cylinder body is arranged on the outer side of the piston rod, and the third cylinder body is movably matched with the second cylinder body; one end of the piston rod is provided with a first valve system structure, one end of the first cylinder body is provided with a second valve system structure, one end of the elastic piece is fixed to one side of the first valve system structure, and the other end of the elastic piece is fixed to one side of the second valve system structure. Aiming at the technical problem that the traditional shock absorber is poor in shock absorption effect, the elastic piece is additionally arranged in the working cylinder body, so that when the piston rod extends or contracts, shock absorption and shock absorption can be further performed by utilizing the deformation of the elastic piece, and the working life is longer and the shock absorption effect is better through the combined work of the elastic piece and the valve system.

Description

Shock absorber assembly

Technical Field

The invention relates to the technical field of shock absorbers, in particular to a shock absorber assembly.

Background

The conventional shock absorber can generate restoring and compression damping force when working, the shock absorber is arranged on a vehicle body, a suspension is compressed under external excitation, the shock absorber fixed on the suspension is compressed along with the suspension to generate compression damping force, and the vibration energy of the whole vehicle is dissipated under the action of the repeated compression and restoring damping force of the shock absorber, so that the aim of attenuating the vibration of the whole vehicle is fulfilled finally. In the process, due to the mode of providing compression and restoring damping in the traditional shock absorber, the oil liquid flow is controlled only by the valve system in the shock absorber, the working condition of the valve system is depended on, the situation of poor shock absorption effect is caused easily, the service life of the shock absorber is influenced greatly by the valve system, and the defect of short service life is caused easily.

Disclosure of Invention

Technical problem to be solved by the invention

Aiming at the technical problem that the traditional shock absorber is poor in shock absorption effect, the invention provides the shock absorber assembly, the elastic part is additionally arranged in the working cylinder body, so that when a piston rod extends or contracts, the shock absorption and the shock absorption can be further realized by utilizing the deformation of the elastic part, and the working life is longer and the shock absorption effect is better through the combined work of the elastic part and the valve system.

Technical scheme

In order to solve the problems, the technical scheme provided by the invention is as follows:

a shock absorber assembly comprises a first cylinder body, wherein a piston rod is movably arranged in the first cylinder body, a second cylinder body is arranged on the outer side of the first cylinder body, a third cylinder body is arranged on the outer side of the piston rod, and the third cylinder body is movably matched with the second cylinder body;

one end of the piston rod is provided with a first valve system structure, one end of the first cylinder body is provided with a second valve system structure, one end of the elastic piece is fixed to one side of the first valve system structure, and the other end of the elastic piece is fixed to one side of the second valve system structure.

Optionally, a fixed block is arranged at the end of the first cylinder body, the fixed block is movably matched with the piston rod, and the fixed block is arranged between the first cylinder body and the second cylinder body; the fixed block is provided with an adaptation part, the piston rod is provided with a limiting seat, and the limiting seat is matched with the adaptation part.

Optionally, an assembly groove is formed in the piston rod, a clamp spring is arranged in the assembly groove, and the limiting seat is arranged on the piston rod through the clamp spring.

Optionally, the first valve system structure includes a first support, a first channel is provided on the first support, a first spring plate set is provided on one side of the first support, a first communicating portion is provided on the first spring plate set, a first valve body is provided on one side of the spring plate, a first liquid inlet channel and a first return channel are provided on the first valve body, and a second spring plate set is provided on one side of the first valve body.

Optionally, the second valve system structure includes a second valve body, one side of the second valve body is provided with a third spring plate set, the other side of the second valve body is provided with a fourth spring plate set, the third spring plate set is provided with a second communicating portion, and the second valve body is provided with a second liquid inlet channel and a first return channel.

Optionally, the first valve body is peripherally provided with a first seal.

Optionally, a second sealing element is arranged at the end of the first cylinder, and the piston rod is movably matched with the second sealing element.

Optionally, one end of the first valve system structure is provided with a first check ring, one end of the second valve system structure is provided with a fixed seat, one end of the elastic member is fixedly connected with the first check ring, and the other end of the elastic member is fixedly connected with the fixed seat.

Optionally, an aperture is provided on the first retainer ring.

Optionally, the second cylinder and the third cylinder are each provided with a mounting portion.

Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

aiming at the technical problem that the traditional shock absorber is poor in shock absorption effect, the elastic piece is additionally arranged in the working cylinder body, so that when the piston rod extends or contracts, shock absorption and shock absorption can be further performed by utilizing the deformation of the elastic piece, and the working life is longer and the shock absorption effect is better through the combined work of the elastic piece and the valve system.

Drawings

Fig. 1 is a schematic structural diagram of a shock absorber assembly according to an embodiment of the present invention.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The terms first, second, and the like in the present invention are provided for convenience of describing the technical solution of the present invention, and have no specific limiting effect, but are all generic terms, and do not limit the technical solution of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solutions in the same embodiment and the technical solutions in different embodiments can be arranged and combined to form a new technical solution without contradiction or conflict, and the technical solutions are within the scope of the present invention.

Example 1

With reference to fig. 1, the present embodiment provides a shock absorber assembly, which includes a first cylinder 101, a piston rod 100 is movably disposed in the first cylinder 101, a second cylinder 102 is disposed outside the first cylinder 101, a third cylinder 103 is disposed outside the piston rod 100, and the third cylinder 103 is movably engaged with the second cylinder 102;

one end of the piston rod 100 is provided with a first valve system structure, one end of the first cylinder 101 is provided with a second valve system structure, one end of the elastic member 104 is fixed to one side of the first valve system structure, and the other end of the elastic member 104 is fixed to one side of the second valve system structure.

In this embodiment, the first cylinder 101 is a working cylinder, the piston rod 100 moves in the working cylinder, one end of the piston rod 100 is fixedly connected to an end of the third cylinder 103, so as to drive the third cylinder to move together, oil is disposed in both the first cylinder 101 and the second cylinder 102, and flows through the first valve system structure and the second valve system structure along with the telescopic movement of the piston rod 100, the first valve system structure in this embodiment is a piston valve, the second valve system structure is a compression valve, and the first valve system structure and the second valve system structure provide damping force for the oil by controlling the flow of the oil, so as to achieve the vibration absorption function of the vibration absorber in this embodiment. Further, in the present embodiment, an elastic member 104 is disposed between the first valve train structure and the second valve train structure, the elastic member 104 is preferably a spring, and two ends of the spring are respectively fixed to one side of the first valve train structure and one side of the second valve train structure, so that the elastic member 104 can be stretched and compressed along with the expansion and contraction of the piston rod 100 to further absorb the vibration.

The advantage of the elastic member 104 in this embodiment is that it can achieve the shock absorbing effect in both the compression and extension directions, so based on the combined operation of the elastic member 104, the first valve train structure and the second valve train structure, a better shock absorbing effect is achieved, and the service life of the shock absorber assembly is also improved.

As an optional implementation manner of this embodiment, a fixed block 119 is disposed at an end of the first cylinder 101, the fixed block 119 is movably engaged with the piston rod 100, and the fixed block 119 is disposed between the first cylinder 101 and the second cylinder 102; the fixed block 119 is provided with an adapting portion 105, the piston rod 100 is provided with a limiting seat 106, and the limiting seat 106 is matched with the adapting portion 105.

In this embodiment, the fixing block 119 is an oil seal, the adapting portion 105 disposed on the oil seal may be an annular groove, when the piston rod 100 moves in a telescopic manner, the limiting seat 106 on the piston rod 100 moves therewith, and the limiting seat 106 is of a structure matched with the annular groove, so that when the piston rod 100 extends to a certain extent, the limiting seat 106 can slide into the adapting portion 105.

Spacing seat 106 and adaptation portion 105 phase-match, when spacing seat 106 along with the piston rod activity, the in-process of sliding into adaptation portion 105, the first valve system structure of piston rod 100 tip does work to fluid, through the flow that changes fluid, the buffering damping effect of piston rod 100 first stage has been realized, and spacing seat 106 slides into adaptation portion 105's in-process, because adaptation portion 105 is the annular, also can extrude fluid when spacing seat 106 slides into the annular, do work to fluid to realize the buffering damping effect of second stage.

The engagement between the stopper seat 106 and the adapter 105 also provides a plurality of effects, and firstly, the position of the stopper seat 106 mounted on the piston rod 100 determines the limit of the stroke of the piston rod 100, i.e. the user can adjust the maximum extension of the piston rod 100 by adjusting the position of the stopper seat 106. In addition, it is conceivable that, due to the matching of the limiting seat 106 and the adapting portion 105, when the piston rod 100 extends to the limit position, the first valve train structure at the end portion of the piston rod does not directly abut against the end portion of the first cylinder 101 or the second cylinder 102, so that direct impact does not occur between the piston rod and the first cylinder, the internal structure of the shock absorber is protected, and the service life of the shock absorber is further prolonged.

In this embodiment, the end of the first cylinder 101 is provided with a fixing block 119 matching with the end structures of the first cylinder 101 and the second cylinder 102, so as to ensure the stable connection between the end of the first cylinder 101 and the end of the second cylinder 102, and the fixing block 119 is an oil seal. Further, the fixed block 119 may also perform a certain sealing function to prevent oil in the first cylinder 101 and the second cylinder 102 from leaking. In addition, in this embodiment, the piston rod 100 freely moves in the through hole of the fixing block 119, so that the fixing block 119 plays a role in guiding and limiting the piston rod 100, and the setting of the fixing block 119 can also prevent the oil in the first cylinder 101 from being taken out along with the movement of the piston rod 100 to a certain extent.

As an optional implementation manner of this embodiment, an assembly groove is provided on the piston rod 100, a snap spring 107 is provided in the assembly groove, and the limit seat 106 is provided on the piston rod 100 through the snap spring 107. In this embodiment, the clamp spring 107 is disposed in the assembly groove of the piston rod 100, and the clamp spring 107 is fixed to the limiting seat 106, so that the limiting seat 106 is fixed to the piston rod 100.

As an optional implementation manner of this embodiment, the first valve train structure includes a first bracket 111, a first channel 113 is disposed on the first bracket 111, a first spring plate set 112 is disposed on one side of the first bracket 111, a first communication portion is disposed on the first spring plate set 112, a first valve body 115 is disposed on one side of the spring plate, a first liquid inlet channel and a first return channel are disposed on the first valve body 115, and a second spring plate set 118 is disposed on one side of the first valve body 115.

The first valve system structure of the present embodiment is a piston valve assembly, and is used for providing a damping force to the piston rod 100 when the piston rod 100 retracts or extends, so as to suppress a large-amplitude movement of the piston rod 100, and perform vibration suppression and absorption functions.

When the piston rod 100 retracts in the first cylinder 101, the oil on one side of the first valve body 115 is compressed, the oil flows through the first return passage and overcomes the elastic force of the first spring plate set 112 to flow to the other side of the first valve body 115, in the process, the oil narrows when flowing through the first return passage and needs to overcome the elastic force of the first spring plate set 112, so that the flow of the oil is blocked, a damping force is provided for the piston rod 100, and the vibration suppression and absorption effects are achieved.

When the piston rod 100 extends out of the first cylinder 101, negative pressure occurs at one side of the amplitude control device, oil flows into a negative pressure region from one side of the first valve body 115, which is far away from the amplitude control device, in the process, the oil firstly flows into the first liquid inlet channel through the first channel 113 and the first communicating part, the first communicating part overcomes the defect that the second spring plate set 118 flows into the negative pressure region under the action of oil pressure after the oil passes through the pores arranged on the first spring plate set 112, in the process, the oil needs to flow through the first channel 113 and the first liquid inlet channel, the flowing channel is narrowed, and the elastic force of the second spring plate set 118 needs to be overcome, so that the flowing of the oil is blocked, and further, damping force is provided for the piston rod 100, and the vibration suppression and absorption effects are achieved.

As an optional implementation manner of this embodiment, the second valve system includes a second valve body 120, one side of the second valve body 120 is provided with a third spring plate set 121, the other side of the second valve body 120 is provided with a fourth spring plate set 122, the third spring plate set 121 is provided with a second communicating portion, and the second valve body 120 is provided with a second liquid inlet channel 124 and a first return channel 125.

The second valve system structure of the present embodiment is a compression valve assembly, which is used to provide damping force to the piston rod 100 when the piston rod 100 retracts or extends, so as to suppress the large-amplitude movement of the piston rod 100, and to perform the vibration suppressing and absorbing functions.

When the piston rod 100 retracts in the first cylinder 101, oil in the first cylinder 101 is compressed, the oil flows through the second liquid inlet channel 124 through the second communicating part, and flows out by overcoming the elastic force of the fourth spring plate group 122, the second communicating part of the embodiment is a gap on the fourth spring plate group 122, in the process, the flow channel of the oil is narrowed when the oil flows through the second liquid inlet channel 124, and the elastic force of the fourth spring plate group 122 needs to be overcome, so that the flow of the oil is blocked, a damping force is provided for the piston rod 100, and the vibration suppression and absorption effects are achieved.

When the piston rod 100 extends out of the first cylinder 101, negative pressure is generated in the first cylinder 101, and oil flows through the first return passage 125 and flows into the first cylinder 101 against the elastic force of the third spring plate set 121, in the process, the oil needs to flow through the first return passage 125, the flow passage is narrowed, and the elastic force of the third spring plate set 121 needs to be overcome, so that the flow of the oil is blocked, and a damping force is provided for the piston rod 100, thereby achieving the effects of vibration suppression and absorption.

Example 2

The embodiment provides a shock absorber assembly, which can be improved on the basis of the embodiment 1 as follows: the first valve body 115 is provided with a first seal 109 on the outer periphery. In order to ensure the sealing performance of the first valve system structure along with the movement of the piston rod 100 in the first cylinder 101 and ensure that the oil can only flow through the first valve system structure, a first sealing element 109 may be disposed on the periphery of the first valve body 115 to prevent the oil from overflowing and leaking, which affects the working effect of the first valve system structure.

As an alternative embodiment of this embodiment, the end of the first cylinder 101 is provided with a second seal 110, and the piston rod 100 is movably engaged with the second seal 110. In this embodiment, since the oil is easily taken out from the first cylinder 101 when the piston rod 100 moves, in order to minimize the loss of the oil, the second seal 110 may be disposed at the end of the first cylinder 101, so as to reduce the outflow of the oil by the sealing effect of the second seal 110.

In addition, the second sealing element 110 may be fixed to the second cylinder 102 to further achieve the sealing function of the oil in the second cylinder 102, that is, the second sealing element 110 may simultaneously perform the sealing function of the first cylinder 101 and the second cylinder 102.

As an optional implementation manner of this embodiment, one end of the first valve train structure is provided with a first retaining ring 108, one end of the second valve train structure is provided with a fixed seat 114, one end of the elastic element 104 is fixedly connected with the first retaining ring 108, and the other end is fixedly connected with the fixed seat 114. In this embodiment, one end of the elastic element 104 may be fixedly connected to the first retaining ring 108 by welding or any connection method, the first retaining ring 108 is fixed to the first valve train structure, so as to achieve the fixed connection of one end of the elastic element 104, the other end of the elastic element 104 is fixedly connected to the fixing base 114 by any connection method, such as interference fit or welding, and the fixing base 114 is fixedly connected to the second valve train structure, so as to achieve the fixed connection of the other end of the elastic element 104.

As an alternative embodiment of this embodiment, the first retainer ring 108 is provided with an aperture. In this embodiment, the oil can flow into the first valve system structure through the through hole or the gap formed on the first retainer ring 108, so as to circulate the oil, thereby avoiding the blockage of the oil passage due to the arrangement of the first retainer ring 108. In addition, the size of the pore space is changed, the flowing condition of oil can be further adjusted, the flowing condition of the oil flowing into or out of the first valve system structure is changed, and the vibration damping and buffering effects of the vibration damper can be further changed.

As an alternative embodiment of this embodiment, the end portions of the second cylinder 10 and the third cylinder 103 are provided with mounting portions. In this embodiment, the end portions of the second rod 10 and the third cylinder 103 are provided with mounting portions, and the mounting portions may be rubber bushing assemblies, so as to implement mounting and assembling of the damper assembly and the vehicle body or the suspension structure.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. A shock absorber assembly is characterized by comprising a first cylinder body, wherein a piston rod is movably arranged in the first cylinder body, a second cylinder body is arranged on the outer side of the first cylinder body, a third cylinder body is arranged on the outer side of the piston rod, and the third cylinder body is movably matched with the second cylinder body;

2. The assembly as claimed in claim 1, wherein the first cylinder has a fixed block at an end thereof, the fixed block is movably engaged with the piston rod, and the fixed block is disposed between the first cylinder and the second cylinder; the fixed block is provided with an adaptation part, the piston rod is provided with a limiting seat, and the limiting seat is matched with the adaptation part.

3. The assembly as claimed in claim 2, wherein the piston rod is provided with an assembly groove, a snap spring is arranged in the assembly groove, and the limit seat is arranged on the piston rod through the snap spring.

4. The assembly according to claim 1, wherein the first valve train structure comprises a first bracket, the first bracket is provided with a first passage, one side of the first bracket is provided with a first spring plate set, the first spring plate set is provided with a first communicating portion, one side of the spring plate is provided with a first valve body, the first valve body is provided with a first liquid inlet passage and a first return passage, and one side of the first valve body is provided with a second spring plate set.

5. The shock absorber assembly as set forth in claim 1, wherein said second valve system includes a second valve body, a third spring plate set is disposed on one side of said second valve body, a fourth spring plate set is disposed on the other side of said second valve body, a second communication portion is disposed on said third spring plate set, and a second inlet passage and a first return passage are disposed on said second valve body.

6. A shock absorber assembly as set forth in claim 4 wherein said first valve body is peripherally provided with a first seal.

7. A shock absorber assembly as set forth in claim 1 wherein said first cylinder end is provided with a second seal and said piston rod is in movable engagement with said second seal.

8. The assembly as set forth in claim 1 wherein said first valve system structure has a first retainer ring at one end thereof, said second valve system structure has a retainer ring at one end thereof, and said resilient member has one end fixedly connected to said first retainer ring and the other end fixedly connected to said retainer ring.

9. A shock absorber assembly as set forth in claim 8 wherein said first retainer has apertures therein.

10. A shock absorber assembly as set forth in claim 1 wherein said second cylinder and said third cylinder end are each provided with a mounting portion.