Energy accumulator, shock absorber assembly and vehicle

Abstract

The invention discloses an energy accumulator, a shock absorber assembly and a vehicle. The energy accumulator comprises an inner corrugated pipe and an outer corrugated pipe, the outer corrugated pipe is arranged on the periphery of the inner corrugated pipe in a sleeving mode, and the inner corrugated pipe and the outer corrugated pipe are arranged in a spaced mode to form an energy storage cavity with one open end in the axial direction; the first guide ring is arranged at one end, in the axial direction, of the outer corrugated pipe and one end, in the axial direction, of the inner corrugated pipe so as to seal one end of the energy storage cavity; and the first guide ring is suitable for driving the inner corrugated pipe and the outer corrugated pipe to move according to the change of external pressure and changing the volume of the energy storage cavity. According to the energy accumulator designed by the invention, the inner peripheral wall of the inner corrugated pipe enables the energy accumulator to be more adaptive to the shape of the shock absorber assembly, so that the installation of the energy accumulator is facilitated, the volume of the shock absorber assembly is reduced, and the layout and installation of the shock absorber assembly are facilitated.

Description

Technical Field

[0001] The present invention relates to the field of shock absorbers, and in particular to an accumulator, a shock absorber assembly and a vehicle. Background Art

[0002] In the related art, the shock absorber assembly is provided with an accumulator, which can absorb additional pressure to allow the hydraulic oil absorbed due to the additional load to flow back evenly, thereby achieving energy release when controlling the return stroke of the piston of the shock absorber assembly, thereby achieving a return stroke damping effect and reducing the return risk of the piston of the shock absorber assembly. In the prior art, the accumulator is arranged outside the housing of the shock absorber assembly through a bracket, which increases the weight of the shock absorber assembly and affects the spatial layout of the shock absorber assembly. At the same time, the accumulator is exposed to the outside, and the external ambient temperature and the oil temperature of the shock absorber assembly will affect the operation of the accumulator. The accumulator is affected by many factors, which reduces the working stability of the accumulator. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an accumulator. According to the accumulator designed by the present invention, the inner peripheral wall of the inner bellows enables the accumulator to better adapt to the shape of the shock absorber assembly, facilitates the installation of the accumulator, reduces the volume of the shock absorber assembly, and facilitates the layout and installation of the shock absorber assembly.

[0004] The present invention also provides a shock absorber assembly having the energy accumulator.

[0005] The present invention also provides a vehicle having the shock absorber assembly.

[0006] The accumulator according to the present invention comprises: an inner bellows; an outer bellows, wherein the outer bellows is sleeved on the outer circumference of the inner bellows and the inner bellows and the outer bellows are spaced apart to form an energy storage chamber which is open at one axial end; a first guide ring, wherein the first guide ring is arranged at one axial end of the outer bellows and the inner bellows to close one end of the energy storage chamber; wherein the first guide ring is suitable for driving the inner bellows and the outer bellows to move and change the volume of the energy storage chamber according to changes in external pressure.

[0007] According to the accumulator of the present invention, the inner peripheral wall of the inner bellows defines an avoidance hole, which allows the accumulator to better adapt to the shape of the shock absorber assembly, facilitates the installation of the accumulator, reduces the volume of the shock absorber assembly, facilitates the layout and installation of the shock absorber assembly, and can avoid providing a separate mounting bracket for the accumulator, thereby reducing the weight and cost of the shock absorber assembly.

[0008] According to some embodiments of the present invention, the further comprising: a guide, wherein the guide is arranged at the other end of the inner bellows and the outer bellows in the axial direction, and a first limiting portion is formed in the guide; a limiting member, wherein a second limiting portion which cooperates with the first limiting portion is formed at one end of the limiting member, and the other end of the limiting member is connected to the first wire loop; wherein the first limiting portion and the second limiting portion are suitable for limiting the axial movement stroke of the limiting member.

[0009] According to some embodiments of the present invention, the first limiting portion is configured as a limiting hole extending in the axial direction, and the second limiting portion is configured as a limiting block received in the limiting hole.

[0010] According to some embodiments of the present invention, an annular protrusion extending into the energy storage chamber is formed at one end of the guide facing the energy storage chamber, and the limiting hole is formed in the annular protrusion.

[0011] According to some embodiments of the present invention, it also includes: a second guide ring, which is sleeved on the outer bellows and protrudes from the outer circumferential wall of the outer bellows; and a third guide ring, which is passed through the inner bellows and protrudes from the inner circumferential wall of the inner bellows.

[0012] A shock absorber assembly according to another embodiment of the present invention will be described below.

[0013] The shock absorber assembly according to the present invention includes: a shell having a accommodating chamber formed therein; a piston, which is movably arranged in the accommodating chamber and divides the accommodating chamber into a restoring chamber and a compression chamber; an accumulator, which is constructed as the accumulator described in any one of the above embodiments, and the first guide ring of the accumulator drives the inner bellows and the outer bellows to move and change the volume of the energy storage chamber according to the change of the medium pressure in the compression chamber or the restoring chamber.

[0014] According to the shock absorber assembly involved in the present invention, by arranging the accumulator of the present application on the shock absorber assembly, the volume of the shock absorber assembly is reduced, thereby reducing the installation space occupied by the shock absorber assembly, facilitating the layout of the shock absorber assembly, and avoiding the need to set up a separate connecting bracket, thereby reducing the weight and production cost of the shock absorber assembly.

[0015] According to some embodiments of the present invention, the accumulator is configured as two accumulators respectively disposed in the recovery chamber and the compression chamber, wherein one of the accumulators is disposed at one end of the housing and sleeved on the outer periphery of the piston, and the other accumulator is disposed at the other end of the housing.

[0016] According to some embodiments of the present invention, the shell includes: a first cylinder, in which the accommodating cavity is formed; and a second cylinder, which is sleeved on the outer circumference of the first cylinder and spaced apart from the first cylinder.

[0017] According to some embodiments of the present invention, a first auxiliary oil chamber and a second auxiliary oil chamber spaced apart in the axial direction are formed between the first cylinder and the second cylinder, the first auxiliary oil chamber is connected to the recovery chamber, the second auxiliary oil chamber is connected to the compression chamber, and the accumulator is sleeved on the outer periphery of the first cylinder.

[0018] According to some embodiments of the present invention, the accumulator is sleeved on the outer circumference of the shell.

[0019] According to some embodiments of the present invention, the system further comprises: an oil pump, wherein an inlet and an outlet of the oil pump are respectively connected to the recovery chamber and the compression chamber to control the pressure in the recovery chamber and the compression chamber.

[0020] A vehicle according to another embodiment of the present invention will be briefly described below.

[0021] The vehicle according to the present invention includes the shock absorber assembly described in any one of the above embodiments. Since the vehicle according to the present invention is provided with the shock absorber assembly of the above embodiment, the vehicle has a good shock absorbing effect, and the shock absorber assembly of the vehicle occupies less installation space, which facilitates the installation of other components.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a cross-sectional view of a shock absorber assembly according to an embodiment of the present invention;

[0025] Figure 2 is a cross-sectional view of an accumulator assembled to a recovery chamber according to an embodiment of the present invention;

[0026] Figure 3 is a cross-sectional view of an accumulator assembled to a compression chamber according to an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of the structure of an outer bellows according to an embodiment of the present invention.

[0028] Reference numerals: 1. accumulator; 2. shock absorber assembly;

[0029] 11. Inner bellows; 12. Outer bellows; 13. First guide ring;

[0030] 14. guide; 141. annular convex portion; 142. limiting hole;

[0031] 15. Limiting piece; 151. Limiting block;

[0032] 16. Second guide ring; 17. Third guide ring;

[0033] 211, first cylinder; 212, second cylinder;

[0034] 221, piston body; 222, piston rod;

[0035] 23. Fastener; 24. Restoration chamber; 25. Compression chamber. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the related art, the shock absorber assembly is provided with an accumulator, which can absorb additional pressure to allow the hydraulic oil absorbed due to the additional load to flow back evenly, thereby achieving energy release when controlling the return stroke of the piston of the shock absorber assembly, thereby achieving a return stroke damping effect and reducing the return risk of the piston of the shock absorber assembly. In the prior art, the accumulator is arranged outside the housing of the shock absorber assembly through a bracket, which increases the weight of the shock absorber assembly and affects the spatial layout of the shock absorber assembly. At the same time, the accumulator is exposed to the outside, and the external ambient temperature and the oil temperature of the shock absorber assembly will affect the operation of the accumulator. The accumulator is affected by many factors, which reduces the working stability of the accumulator.

[0042] Reference below Figure 1-Figure 4 An accumulator 1 according to an embodiment of the present invention is described.

[0043] like Figure 1-Figure 4 As shown, the accumulator 1 according to the present invention includes: an inner bellows 11, an outer bellows 12 and a first guide ring 13, the outer bellows 12 is sleeved on the outer circumference of the inner bellows 11 and the inner bellows 11 and the outer bellows 12 are spaced apart to form an energy storage chamber which is open at one axial end, and the first guide ring 13 is arranged at one axial end of the outer bellows 12 and the inner bellows 11 to close one end of the energy storage chamber; wherein the first guide ring 13 is suitable for driving the inner bellows 11 and the outer bellows 12 to move and change the volume of the energy storage chamber according to changes in external pressure.

[0044] In some embodiments, the inner circumferential wall of the inner bellows 11 defines an avoidance hole, an outer bellows 12 is disposed outside the inner bellows 11, the outer bellows 12 is spaced apart from the inner bellows 11 and forms an energy storage chamber, one end of the energy storage chamber is open in the axial direction, a first guide ring 13 is disposed at the same end of the inner bellows 11 and the outer bellows 12 and connects the inner bellows 11 with the outer bellows 12 to close the open mouth of the energy storage chamber, thereby, the inner bellows 11, the outer bellows 12 and the first guide ring 13 define an annular accumulator 1, and the first guide ring 13 can drive the inner bellows 11 and the outer bellows 12 to deform axially to reduce or increase the volume of the energy storage chamber.

[0045] In some embodiments, the accumulator 1 of the present invention can be assembled inside the shock absorber assembly 2. At this time, the storage chamber is filled with pressure medium, and the inner circumferential wall of the inner bellows 11 defines an avoidance hole. The shock absorber assembly 2 includes a piston and a shell. The piston is movably arranged in the shell and separates the shell into a recovery chamber 24 and a compression chamber 25. The recovery chamber 24 and the compression chamber 25 are filled with hydraulic oil. When assembling the accumulator 1, the accumulator 1 can be arranged in the recovery chamber 24. At this time, the accumulator 1 is sleeved on the outer circumferential wall of the piston through the avoidance hole; of course, the accumulator 1 can also be arranged in the compression chamber 25. At this time, the avoidance hole of the accumulator 1 is suitable for avoiding at least part of the piston.

[0046] When the piston moves away from the accumulator 1, the space in the chamber where the accumulator 1 is located increases. Since the amount of hydraulic oil in the recovery chamber 24 and the compression chamber 25 remains unchanged, in order to balance the spatial pressure in the chamber where the accumulator 1 is located, under the action of the pressure medium in the accumulator chamber, the first guide ring 13 will drive the inner bellows 11 and the outer bellows 12 to stretch and move toward the piston; when the piston moves toward the accumulator 1, the volume in the chamber where the accumulator 1 is located decreases, so that the hydraulic oil pressure in the chamber where the accumulator 1 is located increases, and the first guide ring 13 will drive the inner bellows 11 and the outer bellows 12 to compress and move away from the piston. At this time, the pressure medium in the accumulator chamber is compressed and the accumulator 1 is stored. When the piston moves away from the accumulator 1, the accumulator 1 releases energy to quickly reset the piston.

[0047] In other embodiments, the accumulator 1 of the present invention can also be sleeved on the outer peripheral wall of the shock absorber assembly 2. In this case, the energy storage chamber is connected with the recovery chamber 24 or the compression chamber 25 through an oil pipe. When the accumulator 1 is connected with the recovery chamber 24 and the piston moves toward the recovery chamber 24, the hydraulic oil in the recovery chamber 24 flows into the energy storage chamber and causes the accumulator 1 to be stretched and deformed axially to store energy. When the piston moves toward the compression chamber 25, the hydraulic oil in the energy storage chamber flows back to the recovery chamber 24 and releases energy to quickly reset the piston. Similarly, when the accumulator 1 is connected with the compression chamber 25 and the piston moves toward the compression chamber 25, the hydraulic oil in the compression chamber 25 flows into the energy storage chamber and causes the accumulator 1 to be stretched and deformed axially to store energy. When the piston moves toward the recovery chamber 24, the hydraulic oil in the energy storage chamber flows back to the compression chamber 25 and releases energy to quickly reset the piston.

[0048] In some embodiments, the inner bellows 11 and the outer bellows 12 may be made of materials such as metal, thereby increasing the rigidity of the inner bellows 11 and the outer bellows 12 and thereby increasing the service life of the accumulator 1 .

[0049] According to the accumulator 1 involved in the present invention, the inner peripheral wall of the inner bellows 11 defines an avoidance hole, and the avoidance hole allows the accumulator 1 to better adapt to the shape of the shock absorber assembly 2, thereby facilitating the installation of the accumulator 1 and reducing the volume of the shock absorber assembly 2, thereby facilitating the layout and installation of the shock absorber assembly 2. At the same time, it can avoid the need to provide a separate mounting bracket for the accumulator 1, thereby reducing the weight and cost of the shock absorber assembly 2.

[0050] According to some embodiments of the present invention, Figure 1-Figure 4 As shown, the accumulator 1 also includes: a guide 14 and a limiter 15, wherein the guide 14 is arranged at the other end of the inner bellows 11 and the outer bellows 12 in the axial direction, a first limiter is formed in the guide 14, a second limiter that cooperates with the first limiter is formed at one end of the limiter 15, and the other end of the limiter 15 is connected to the first wire loop; wherein the first limiter and the second limiter are suitable for limiting the movement stroke of the limiter 15 in the axial direction.

[0051] In some embodiments, the guide 14 and the first guide ring 13 are respectively arranged at the two ends of the inner bellows 11 and the outer bellows 12 and are suitable for closing the energy storage chamber. One end of the limiter 15 is connected to the first guide ring 13 and the other end of the limiter 15 extends toward the guide 14 and forms a second limiter. The first limiter and the second limiter can be movably matched to limit the moving direction of the inner bellows 11 and the outer bellows 12, so that the inner bellows 11 and the outer bellows 12 can move axially more stably. At the same time, the first limiter and the second limiter can cooperate to limit the moving stroke of the inner bellows 11 and the outer bellows 12, avoid excessive stretching or compression of the inner bellows 11 and the outer bellows 12, and extend the service life of the inner bellows 11 and the outer bellows 12.

[0052] According to some embodiments of the present invention, Figure 1-Figure 4 As shown, the first limiting portion is constructed as a limiting hole 142 extending in the axial direction, and the second limiting portion is constructed as a limiting block 151 accommodated in the limiting hole 142. It can be understood that the limiting hole 142 extends in the axial direction, and the limiting block 151 is movably accommodated in the limiting hole 142 to limit the moving direction of the inner bellows 11 and the outer bellows 12, and the axial length dimension of the limiting hole 142 limits the movable distance of the limiting block 151, and the movable distance of the limiting block 151 is equal to the deformable distance of the inner bellows 11 and the outer bellows 12, that is, the length dimension of the limiting hole 142 limits the deformable distance of the inner bellows 11 and the outer bellows 12, thereby avoiding excessive stretching or excessive compression of the inner bellows 11 and the outer bellows 12.

[0053] According to some embodiments of the present invention, Figure 1-Figure 4 As shown, an annular protrusion 141 extending into the energy storage chamber is formed at one end of the guide 14 facing the energy storage chamber, and a limiting hole 142 is formed in the annular protrusion 141. It can be understood that the limiting hole 142 is formed in the annular protrusion 141 extending into the energy storage chamber, which can shorten the axial length of the accumulator 1 and reduce the volume of the accumulator 1.

[0054] According to some embodiments of the present invention, Figure 1-Figure 4 As shown, the accumulator 1 further includes: a second guide ring 16 and a third guide ring 17, wherein the second guide ring 16 is sleeved on the outer bellows 12 and protrudes from the outer peripheral wall of the outer bellows 12, and the third guide ring 17 is penetrated through the inner bellows 11 and protrudes from the inner peripheral wall of the inner bellows 11. It can be understood that the second guide ring 16 can prevent the outer peripheral wall of the outer bellows 12 from contacting with the components of the shock absorber assembly 2, thereby preventing the outer bellows 12 from rubbing against the components of the shock absorber assembly 2 when the outer bellows 12 moves and generating friction losses, thereby prolonging the service life of the outer bellows 12, and similarly, the third guide ring 17 can prevent the inner bellows 11 from rubbing against the components of the shock absorber assembly 2 when the inner bellows 11 moves, thereby prolonging the service life of the inner bellows 11.

[0055] In summary, according to the accumulator 1 involved in the present invention, the inner circumferential wall of the inner bellows 11 enables the accumulator 1 to better adapt to the shape of the shock absorber assembly 2, facilitates the installation of the accumulator 1, reduces the volume of the shock absorber assembly 2, facilitates the layout and installation of the shock absorber assembly 2, and at the same time avoids setting a separate mounting bracket for the accumulator 1, thereby reducing the weight and cost of the shock absorber assembly 2.

[0056] The shock absorber assembly 2 according to the present invention will be described below.

[0057] like Figure 1-Figure 4As shown, the shock absorber assembly 2 according to the present invention includes: a shell, a piston and an accumulator 1, a housing is formed in the shell, the piston is movably arranged in the housing and divides the housing into a recovery chamber 24 and a compression chamber 25, the recovery chamber 24 and the compression chamber 25 are isolated from each other, and the recovery chamber 24 and the compression chamber 25 are filled with a medium, which can be hydraulic oil or the like, and is not limited here. The accumulator 1 is constructed as the accumulator 1 of any one of the above-mentioned embodiments, and the first guide ring 13 of the accumulator 1 drives the inner bellows 11 and the outer bellows 12 to move and change the volume of the accumulator chamber according to the change of the medium pressure in the compression chamber 25 or the recovery chamber 24.

[0058] It can be understood that the piston can move axially relative to the housing, and the volumes of the compression chamber 25 and the recovery chamber 24 can be changed when the piston moves, that is, when the piston moves toward the compression chamber 25, the volume of the compression chamber 25 decreases and the volume of the recovery chamber 24 increases. At this time, the medium pressure in the compression chamber 25 increases, and the medium pressure in the recovery chamber 24 decreases; when the piston moves toward the recovery chamber 24, the volume of the recovery chamber 24 decreases and the volume of the compression chamber 25 increases. At this time, the medium pressure in the recovery chamber 24 increases, and the medium pressure in the compression chamber 25 decreases.

[0059] When the medium pressure in the chamber of the accumulator 1 increases, the first guide ring 13 drives the inner bellows 11 and the outer bellows 12 to move axially and store energy in the accumulator 1. When the piston returns to the reset direction, the accumulator 1 returns to the reset state and releases energy to quickly return the piston to the reset state.

[0060] According to the shock absorber assembly 2 involved in the present invention, by arranging the accumulator 1 of the present application on the shock absorber assembly 2, the volume of the shock absorber assembly 2 is reduced, thereby reducing the installation space occupied by the shock absorber assembly 2, facilitating the layout of the shock absorber assembly 2, and avoiding the need to set up a separate connecting bracket, thereby reducing the weight of the shock absorber assembly 2 and the production cost.

[0061] According to some embodiments of the present invention, Figure 1-Figure 4 As shown, the accumulator 1 is constructed as two accumulators 1 respectively arranged in the recovery chamber 24 and the compression chamber 25, wherein one accumulator 1 is arranged at one end of the shell and sleeved on the outer periphery of the piston, and the other accumulator 1 is arranged at the other end of the shell.

[0062] In some embodiments, the piston includes a piston body 221 and a piston rod 222. The piston body 221 is movably accommodated in the accommodating chamber and divides the accommodating chamber into a compression chamber 25 and a recovery chamber 24 that are isolated from each other. At least a portion of the piston rod 222 is accommodated in the recovery chamber 24. The piston is formed with a connecting hole that penetrates in the axial direction. One end of the piston rod 222 extends into the compression chamber 25 through the connecting hole and is connected to the fastener 23, and the other end of the piston rod 222 passes through the shell and extends to the outside of the recovery chamber 24. The inner circumferential wall of the inner bellows 11 of the accumulator 1 defines an avoidance hole. The accumulator 1 in the recovery chamber 24 is sleeved on the piston rod 222 through the avoidance hole. The avoidance hole of the accumulator 1 in the compression chamber 25 is suitable for avoiding the fastener 23 and the part of the piston rod 222 extending into the compression chamber 25. The fastener 23 can be a nut, etc., which is not limited here.

[0063] Therefore, the accumulator 1 of the present application is arranged in the shock absorber assembly 2, so that the accumulator 1 is mainly affected by the oil temperature in the shock absorber assembly 2, avoiding the influence of the external ambient temperature on the accumulator 1, and improving the working stability of the accumulator 1.

[0064] According to some embodiments of the present invention, Figure 1-Figure 4 As shown, the shell includes: a first cylinder 211 and a second cylinder 212, the first cylinder 211 has a accommodating cavity formed therein, the second cylinder 212 is sleeved on the outer periphery of the first cylinder 211 and is spaced apart from the first cylinder 211. It can be understood that when the shock absorber assembly 2 collides, the second cylinder 212 may be deformed. The spacing between the first cylinder 211 and the second cylinder 212 can avoid the deformation of the first cylinder 211 caused by the collision of the deformed second cylinder 212 with the first cylinder 211, thereby avoiding the piston from being unable to move normally due to the deformation of the first cylinder 211, thereby improving the safety factor and working stability of the shock absorber assembly 2.

[0065] According to some embodiments of the present invention, Figure 1-Figure 4 As shown, a first auxiliary oil chamber and a second auxiliary oil chamber spaced apart in the axial direction are formed between the first cylinder 211 and the second cylinder 212, the first auxiliary oil chamber is connected to the recovery chamber 24, and the second auxiliary oil chamber is connected to the compression chamber 25, and the accumulator 1 is sleeved on the outer periphery of the first cylinder 211. In some embodiments, the accumulator 1 is arranged in the first auxiliary oil chamber and / or the second auxiliary oil chamber. It can be understood that the medium pressure change in the first auxiliary oil chamber is the same as the medium pressure change in the recovery chamber 24, and the medium pressure change in the second auxiliary oil chamber is the same as the medium pressure change in the compression chamber 25.

[0066] When the medium pressure in the chamber of the accumulator 1 increases, the first guide ring 13 drives the inner bellows 11 and the outer bellows 12 to move axially and store energy in the accumulator 1. When the piston returns to the reset direction, the accumulator 1 returns to the reset state and releases energy to quickly return the piston to the reset state.

[0067] According to some embodiments of the present invention, the accumulator 1 is sleeved on the outer circumference of the housing.

[0068] In some embodiments, an outer shell is sleeved on the outer periphery of the shell, and the outer shell is spaced apart from the shell to form a first receiving chamber and a second receiving chamber that are spaced apart in the axial direction, the first receiving chamber is connected to the recovery chamber 24, and the second receiving chamber is connected to the compression chamber 25, the accumulator 1 is sleeved on the outer periphery of the shell, the accumulator 1 is arranged in the first receiving chamber and / or the accumulator 1 is arranged in the second receiving chamber.

[0069] According to some embodiments of the present invention, the shock absorber assembly 2 further comprises an oil pump, the inlet and outlet of the oil pump being respectively connected to the restoring chamber 24 and the compression chamber 25 to control the pressure in the restoring chamber 24 and the compression chamber 25 .

[0070] In some embodiments, the inlet and outlet of the oil pump are respectively connected with a first oil pipe and a second oil pipe, the free end of the first oil pipe is connected with the recovery chamber 24, and the free end of the second oil pipe is connected with the compression chamber 25, and the recovery chamber 24 and the compression chamber 25 are both provided in the accumulator 1. It can be understood that when the wheel is raised, the oil pump rotates forward and replenishes the hydraulic oil to the recovery chamber 24, the hydraulic oil in the recovery chamber 24 increases, and the energy storage chamber of the accumulator 1 in the recovery chamber 24 is compressed. At this time, the pressure of the recovery chamber 24 increases and pushes the piston to move toward the compression chamber 25, and the energy storage chamber of the accumulator 1 in the compression chamber 25 is compressed until the pressure is balanced. When the oil pump reverses, the hydraulic oil in the recovery chamber 24 decreases, the pressure of the hydraulic oil in the recovery chamber 24 decreases, the pressure of the hydraulic oil in the compression chamber 25 is greater than the pressure of the hydraulic oil in the recovery chamber 24, the accumulator 1 in the compression chamber 25 is restored and pushes the piston to move toward the recovery chamber 24, the accumulator 1 in the recovery chamber 24 is restored, at this time, the pressure of the hydraulic oil in the recovery chamber 24 and the compression chamber 25 is balanced, and the wheel returns to its initial position.

[0071] Similarly, when the wheel extends downward, the oil pump reverses and replenishes hydraulic oil into the compression chamber 25, the hydraulic oil in the compression chamber 25 increases, and the energy storage chamber of the accumulator 1 in the compression chamber 25 is compressed. At this time, the pressure in the compression chamber 25 increases and pushes the piston to move toward the recovery chamber 24, and the energy storage chamber of the accumulator 1 in the recovery chamber 24 is compressed until the pressure is balanced. When the oil pump rotates forward, the hydraulic oil in the compression chamber 25 decreases, the pressure of the hydraulic oil in the compression chamber 25 decreases, the pressure of the hydraulic oil in the recovery chamber 24 is greater than the pressure of the hydraulic oil in the compression chamber 25, the accumulator 1 in the recovery chamber 24 recovers and pushes the piston to move toward the compression chamber 25, the accumulator 1 in the compression chamber 25 recovers, and at this time, the pressure of the hydraulic oil in the recovery chamber 24 and the compression chamber 25 is balanced, and the wheel returns to its initial position.

[0072] In summary, according to the shock absorber assembly 2 involved in the present invention, by arranging the accumulator 1 of the present application on the shock absorber assembly 2, the volume of the shock absorber assembly 2 is reduced, the layout of the shock absorber assembly 2 is facilitated, and the provision of a separate connecting bracket can be avoided, thereby reducing the weight and production cost of the shock absorber assembly 2. At the same time, the accumulator 1 is mainly affected by the oil temperature in the shock absorber assembly 2, thereby avoiding the influence of the external ambient temperature on the accumulator 1, and improving the working stability of the accumulator 1.

[0073] The vehicle according to the present invention will be briefly described below.

[0074] The vehicle according to the present invention is provided with the shock absorber assembly 2 of the above embodiment. Since the vehicle according to the present invention is provided with the shock absorber assembly 2 described in any one of the above embodiments, the vehicle has a good shock absorbing effect, and the shock absorber assembly 2 of the vehicle occupies less installation space, which facilitates the installation of other components.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0076] While embodiments of the present invention have been shown and described above, changes, modifications, substitutions and variations may be made to the embodiments described above.

Claims

1. An accumulator, characterized in that: include: Inner bellows (11); An outer bellows (12), wherein the outer bellows (12) is sleeved on the outer circumference of the inner bellows (11), and the inner bellows (11) and the outer bellows (12) are spaced apart to form an energy storage chamber which is open at one axial end; A first guide ring (13), the first guide ring (13) being arranged at one end of the outer bellows (12) and the inner bellows (11) in the axial direction to close one end of the energy storage chamber; wherein The first guide ring (13) is suitable for driving the inner bellows (11) and the outer bellows (12) to move and change the volume of the energy storage chamber according to changes in external pressure.

2. The accumulator according to claim 1, characterized in that Also includes: A guide (14), the guide (14) being arranged at the other end of the inner bellows (11) and the outer bellows (12) in the axial direction, and a first limiting portion being formed in the guide (14); A limiting member (15), wherein one end of the limiting member (15) is formed with a second limiting portion that cooperates with the first limiting portion, and the other end of the limiting member (15) is connected to the first wire loop; in The first limiting portion and the second limiting portion are suitable for limiting the movement stroke of the limiting member (15) in the axial direction.

3. The accumulator according to claim 2, characterized in that The first limiting portion is configured as a limiting hole (142) extending in the axial direction, and the second limiting portion is configured as a limiting block (151) received in the limiting hole (142).

4. The accumulator according to claim 3, characterized in that An annular convex portion (141) extending into the energy storage chamber is formed at one end of the guide (14) facing the energy storage chamber, and the limiting hole (142) is formed in the annular convex portion (141).

5. The accumulator according to claim 1, characterized in that Also includes: A second guide ring (16), the second guide ring (16) being sleeved on the outer bellows (12) and protruding from the outer peripheral wall of the outer bellows (12); A third guide ring (17), the third guide ring (17) is passed through the inner bellows (11) and protrudes from the inner circumferential wall of the inner bellows (11).

6. A shock absorber assembly, characterized in that: include: A housing is formed with a receiving cavity; A piston, the piston being movably disposed in the accommodating chamber and dividing the accommodating chamber into a recovery chamber (24) and a compression chamber (25); An accumulator (1), wherein the accumulator (1) is constructed as the accumulator (1) as described in any one of claims 1 to 5, wherein the first guide ring (13) of the accumulator (1) drives the inner bellows (11) and the outer bellows (12) to move and change the volume of the accumulator chamber according to the change of the medium pressure in the compression chamber (25) or the recovery chamber (24).

7. The shock absorber assembly according to claim 6, characterized in that The accumulator (1) is constructed of two accumulators respectively arranged in the recovery chamber (24) and the compression chamber (25), wherein one of the accumulators (1) is arranged at one end of the shell and sleeved on the outer circumference of the piston, and the other accumulator (1) is arranged at the other end of the shell.

8. The shock absorber assembly according to claim 6, characterized in that The housing comprises: A first cylinder (211), wherein the accommodating cavity is formed in the first cylinder (211); The second cylinder (212) is sleeved on the outer circumference of the first cylinder (211) and is spaced apart from the first cylinder (211).

9. The shock absorber assembly according to claim 8, characterized in that A first auxiliary oil chamber and a second auxiliary oil chamber spaced apart in the axial direction are formed between the first cylinder (211) and the second cylinder (212); the first auxiliary oil chamber is connected to the recovery chamber (24), and the second auxiliary oil chamber is connected to the compression chamber (25); the accumulator (1) is sleeved on the outer periphery of the first cylinder (211).

10. The shock absorber assembly according to claim 6, characterized in that The energy accumulator (1) is sleeved on the outer periphery of the shell.

11. The shock absorber assembly according to claim 6, characterized in that Also includes: An oil pump, wherein the inlet and the outlet of the oil pump are respectively connected to the restoring chamber (24) and the compression chamber (25) to control the pressure in the restoring chamber (24) and the compression chamber (25).

12. A vehicle, characterized in that: A shock absorber assembly (2) comprising any one of claims 6 to 11.

Images