Double-cylinder magnetorheological damper with auxiliary air chamber

Abstract

The utility model discloses a double-cylinder magneto-rheological shock absorber with an auxiliary air chamber, and relates to the technical field of variable shock absorbers. Comprising a fixed base, the outer wall of the fixed base is fixedly sleeved with an air cylinder pipe, a fixed inner pipe is fixedly embedded in the inner wall of the fixed base, the outer wall of the fixed inner pipe is fixedly sleeved with a connecting ring, the outer wall of the connecting ring is fixedly embedded in the air cylinder pipe, a floating piston is slidably embedded in the inner wall of the fixed inner pipe, and a main air chamber is formed between the floating piston and the fixed inner pipe; an auxiliary air chamber is formed between the air cylinder pipe and the fixed inner pipe. Through the fixed base, the inflator pipe, the fixed inner pipe, the connecting ring and the floating piston, the section contour of the lower portion of the base can be larger than that of the outer cylinder, an auxiliary air chamber is formed between the lower portion of the base and the outer cylinder, a vent hole communicated with the auxiliary air chamber is formed in the bottom of the main air chamber, and the sufficient air chamber capacity is provided while the movement stroke is effectively guaranteed; and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of variable vibration dampers, in particular to a double-tube magnetorheological vibration damper with a secondary air chamber. Background Art

[0002] Magnetorheological fluid is a suspension that includes a carrier fluid, magnetizable particles, surfactants, etc. In the absence of a magnetic field, the magnetorheological fluid can flow freely, but after the addition of a magnetic field, the magnetizable particles in the carrier fluid instantly obtain a dipole moment and are arranged into a chain structure, causing the magnetorheological fluid to change from a free-flowing state to a semi-solid state, thereby changing the viscosity of the magnetorheological fluid.

[0003] In traditional double-tube magnetorheological shock absorbers, the diameter of the lower main air chamber is consistent with the inner diameter of the working cylinder. Therefore, in order to increase the volume of the main air chamber while keeping the diameter of the working cylinder unchanged, the length of the main air chamber must be increased, which will increase the overall length of the magnetorheological shock absorber, making the layout of the magnetorheological shock absorber more difficult, or occupy the space of the upper magnetorheological fluid, which will affect the vibration reduction performance of the magnetorheological shock absorber. Increasing the diameter of the outer cylinder will also bring about layout difficulties. Utility Model Content

[0004] The utility model provides a double-tube magnetorheological shock absorber with a secondary air chamber. By fixing a base, a cylinder tube, a fixed inner tube, a connecting ring and a floating piston, the cross-sectional profile of the lower part of the base can be made larger than the cross-sectional profile of the outer tube, so that a secondary air chamber is formed between the lower part of the base and the outer tube. A vent hole connected to the secondary air chamber is provided at the bottom of the main air chamber, which effectively ensures the motion stroke while providing sufficient air chamber capacity, and has good practicality.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a double-tube magnetorheological shock absorber with a secondary air chamber, comprising:

[0006] A fixed base, wherein the outer wall of the fixed base is fixedly sleeved with a cylinder tube, the inner wall of the fixed base is fixedly embedded with a fixed inner tube, the outer wall of the fixed inner tube is fixedly sleeved with a connecting ring, the outer wall of the connecting ring is fixedly embedded in the cylinder tube, the inner wall of the fixed inner tube is slidably embedded with a floating piston, a main air chamber is formed between the floating piston and the fixed inner tube, and a secondary air chamber is formed between the cylinder tube and the fixed inner tube.

[0007] As a double-tube magnetorheological shock absorber with a secondary air chamber of the utility model, the outer wall of the fixed base is provided with an air filling hole, and the inner wall of the fixed base is provided with a cross notch.

[0008] As a double-tube magnetorheological shock absorber with auxiliary air chamber of the utility model, a guide ring is slidably embedded in the inner wall of the fixed inner tube, and a piston rod is fixedly embedded in the inner wall of the guide ring.

[0009] As a double-tube magnetorheological shock absorber with a secondary air chamber of the utility model, a guide assembly is fixedly embedded on the top of the inner wall of the fixed inner tube, and the outer wall of the piston rod is slidably embedded in the guide assembly.

[0010] As a double-tube magnetorheological shock absorber with auxiliary air chamber of the utility model, the outer wall of the piston rod is fixedly sleeved with a coil core, and the outer wall of the coil core is slidably embedded in the fixed inner tube.

[0011] As a double-tube magnetorheological shock absorber with auxiliary air chamber of the utility model, the inner wall of the fixed inner tube is filled with magnetic fluid, and the magnetic fluid is arranged between the guide assembly and the guide ring.

[0012] The utility model provides a double-tube magnetorheological shock absorber with auxiliary air chamber. It has the following beneficial effects:

[0013] (1) The double-tube magnetorheological shock absorber with auxiliary air chamber can make the cross-sectional profile of the lower part of the base larger than the cross-sectional profile of the outer tube by fixing the base, the air tube tube, the fixed inner tube, the connecting ring and the floating piston, so that the auxiliary air chamber is formed between the lower part of the base and the outer tube, and the bottom of the main air chamber is provided with an air vent connected to the auxiliary air chamber, which effectively ensures the movement stroke while providing sufficient air chamber capacity, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 It is an exploded view of the utility model.

[0017] In the figure: 1. fixed base; 2. cylinder tube; 3. fixed inner tube; 4. connecting ring; 5. floating piston; 6. guide ring; 7. piston rod; 8. guide assembly; 9. coil core. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the practical embodiment to clearly and completely describe the technical solution in the practical embodiment. Obviously, the described embodiment is only a part of the embodiment of the practical embodiment, not all of the embodiments. Based on the embodiment in the practical embodiment, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this practical embodiment.

[0019] See also Figure 1-3 The utility model provides a technical solution: a double-tube magnetorheological shock absorber with a secondary air chamber, comprising:

[0020] A fixed base 1 is provided, the outer wall of the fixed base 1 is fixedly sleeved with a cylinder tube 2, the inner wall of the fixed base 1 is fixedly embedded with a fixed inner tube 3, the outer wall of the fixed inner tube 3 is fixedly sleeved with a connecting ring 4, the outer wall of the connecting ring 4 is fixedly embedded in the cylinder tube 2, the inner wall of the fixed inner tube 3 is slidably embedded with a floating piston 5, a main air chamber is formed between the floating piston 5 and the fixed inner tube 3, and a secondary air chamber is formed between the cylinder tube 2 and the fixed inner tube 3.

[0021] In this embodiment: the bottom of the fixed inner tube 3 is embedded in the fixed base 1, but the cross groove opened in the fixed base 1 is used to make the gas flow between the fixed inner tube 3 and the fixed base 1, a secondary air chamber is formed between the cylinder tube 2 and the fixed inner tube 3, and a main air chamber is formed between the floating piston 5 and the fixed inner tube 3. The main air chamber and the secondary air chamber are circulated through the cross groove opened in the fixed base 1, so that the cross-sectional profile of the lower part of the base can be larger than the cross-sectional profile of the outer tube, so that a secondary air chamber is formed between the lower part of the base and the outer tube, and a vent hole connected to the secondary air chamber is provided at the bottom of the main air chamber, which effectively ensures the movement stroke while providing sufficient air chamber capacity, and has good practicality.

[0022] Specifically, an outer wall of the fixed base 1 is provided with an inflation hole, and an inner wall of the fixed base 1 is provided with a cross notch.

[0023] In this embodiment: gas can be filled inward through the inflation hole, and the cross notch allows the main air chamber and the auxiliary air chamber to flow.

[0024] Specifically, a guide ring 6 is slidably embedded in the inner wall of the fixed inner tube 3 , and a piston rod 7 is fixedly embedded in the inner wall of the guide ring 6 .

[0025] In this embodiment, the guide ring 6 can assist the sliding of the piston rod 7, so that the upper part of the piston rod 7 can slide up and down stably.

[0026] Specifically, the guide assembly 8 is fixedly embedded on the top of the inner wall of the fixed inner tube 3 , and the outer wall of the piston rod 7 is slidably embedded in the guide assembly 8 .

[0027] In this embodiment, the guide assembly 8 can assist the sliding of the piston rod 7 so that the lower part of the piston rod 7 can slide up and down stably.

[0028] Specifically, the outer wall of the piston rod 7 is fixedly sleeved with a coil core 9 , and the outer wall of the coil core 9 is slidably embedded in the fixed inner tube 3 .

[0029] In this embodiment, the coil core 9 can be embedded in the magnetic fluid and restricted by the magnetic fluid to limit movement.

[0030] Specifically, the inner wall of the fixed inner tube 3 is filled with magnetic fluid, and the magnetic fluid is arranged between the guide assembly 8 and the guide ring 6 .

[0031] In this embodiment: the magnetorheological fluid can flow freely, but after the magnetic field is added, the magnetizable particles in the carrier fluid instantly obtain a dipole moment and are arranged into a chain structure, so that the magnetorheological fluid changes from a free-flowing state to a semi-solid state, thereby changing the viscosity of the magnetorheological fluid.

[0032] When in use, the bottom of the fixed inner tube 3 is embedded in the fixed base 1, but the cross notch opened on the fixed base 1 is used to make the gas flow between the fixed inner tube 3 and the fixed base 1, a secondary air chamber is formed between the cylinder tube 2 and the fixed inner tube 3, and a main air chamber is formed between the floating piston 5 and the fixed inner tube 3. The main air chamber and the secondary air chamber are circulated through the cross notch opened on the fixed base 1, so that the cross-sectional profile of the lower part of the base can be made larger than the cross-sectional profile of the outer tube, so that a secondary air chamber is formed between the lower part of the base and the outer tube, and a vent hole connected to the secondary air chamber is provided at the bottom of the main air chamber, which effectively ensures the movement stroke while providing sufficient air chamber capacity, and has good Practicality: the air filling hole can be filled with gas, the cross slot can allow the main air chamber and the auxiliary air chamber to circulate, the guide ring 6 can assist the sliding of the piston rod 7, so that the upper part of the piston rod 7 can slide up and down stably, the guide assembly 8 can assist the sliding of the piston rod 7, so that the lower part of the piston rod 7 can slide up and down stably, the coil core 9 can be embedded in the magnetic fluid and restricted by the magnetic fluid to limit the movement. The magnetic fluid can flow freely, but after the magnetic field is added, the magnetizable particles in the carrier liquid instantly obtain a dipole moment and are arranged into a chain structure, so that the magnetorheological fluid changes from a free-flowing state to a semi-solid state, thereby changing the viscosity of the magnetorheological fluid.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-tube magnetorheological shock absorber with auxiliary air chamber, characterized in that: include: A fixed base (1), wherein an air cylinder tube (2) is fixedly sleeved on the outer wall of the fixed base (1), a fixed inner tube (3) is fixedly embedded on the inner wall of the fixed base (1), a connecting ring (4) is fixedly sleeved on the outer wall of the fixed inner tube (3), the outer wall of the connecting ring (4) is fixedly embedded in the air cylinder tube (2), a floating piston (5) is slidably embedded on the inner wall of the fixed inner tube (3), a main air chamber is formed between the floating piston (5) and the fixed inner tube (3), and a secondary air chamber is formed between the air cylinder tube (2) and the fixed inner tube (3).

2. A double-tube magnetorheological shock absorber with auxiliary air chamber according to claim 1, characterized in that: An outer wall of the fixed base (1) is provided with an inflation hole, and an inner wall of the fixed base (1) is provided with a cross notch.

3. A double-tube magnetorheological shock absorber with auxiliary air chamber according to claim 2, characterized in that: A guide ring (6) is slidably embedded in the inner wall of the fixed inner tube (3), and a piston rod (7) is fixedly embedded in the inner wall of the guide ring (6).

4. A double-tube magnetorheological shock absorber with auxiliary air chamber according to claim 3, characterized in that: A guide assembly (8) is fixedly embedded in the top of the inner wall of the fixed inner tube (3), and the outer wall of the piston rod (7) is slidably embedded in the guide assembly (8).

5. A double-tube magnetorheological shock absorber with auxiliary air chamber according to claim 4, characterized in that: The outer wall of the piston rod (7) is fixedly sleeved with a coil core (9), and the outer wall of the coil core (9) is slidably embedded in the fixed inner tube (3).

6. A double-tube magnetorheological shock absorber with auxiliary air chamber according to claim 5, characterized in that: The inner wall of the fixed inner tube (3) is filled with magnetic fluid, and the magnetic fluid is arranged between the guide assembly (8) and the guide ring (6).

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