Single-cylinder magneto-rheological automobile shock absorber

Abstract

The utility model relates to the technical field of magneto-rheological automobile shock absorbers, and discloses a single-cylinder magneto-rheological automobile shock absorber which comprises a shock absorption pipe, a connecting rod is elastically inserted in the shock absorption pipe, an inner piston is fixedly connected to the outer surface of the connecting rod in a sleeved mode, and a coil is connected to the bottom end of the connecting rod through a circuit. Through the arrangement of the threaded sleeve in the damping pipe, no matter how the state of magnetorheological fluid in the damping pipe is, as long as the damping pipe conducts damping work, the magnetorheological fluid in the damping pipe is lifted and rotated on the threaded rod through the threaded sleeve, and the magnetorheological fluid in the damping pipe can be driven to rotate. The magnetorheological fluid in the damping pipe can be stirred through the multiple stirring columns, the possibility of precipitation of the magnetorheological fluid is avoided, even if the precipitation problem occurs, simple fluid filling and impurity discharging work can still be conducted on the magnetorheological fluid in the damping pipe by changing the rotating position of the rotating check block, and the working efficiency of the magnetorheological fluid is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetorheological automotive shock absorbers, and specifically relates to a single-tube magnetorheological automotive shock absorber. Background Technique

[0002] The single-tube magnetorheological automotive shock absorber is an advanced shock-absorbing device applying magnetorheological materials, mainly used in the automotive suspension system. It realizes the active control of shock-absorbing damping through the rheological property change of magnetorheological fluid (MR fluid), thereby improving the comfort and handling performance of the vehicle.

[0003] When the shock absorber is in use, the magnetorheological fluid filled inside plays a crucial role. However, since the magnetorheological fluid at the bottom of the coil will switch its state with the on-off of the circuit, over time, it is easy for the magnetorheological fluid to form precipitation at the bottom of the shock absorber cylinder. When the circuit is connected, the precipitate will affect the state formation of the magnetorheological fluid, and the existing shock absorber lacks a device for the magnetorheological fluid to generate precipitation, thus affecting the service life of the shock absorber.

[0004] Therefore, it is necessary to design a single-tube magnetorheological automotive shock absorber to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a single-tube magnetorheological automotive shock absorber for solving the technical problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A single-tube magnetorheological automotive shock absorber, including a shock-absorbing tube, a connecting rod is elastically inserted inside the shock-absorbing tube, an internal piston is fixedly sleeved on the outer surface of the connecting rod, a coil is electrically connected to the bottom end of the connecting rod, a first rotating shaft is rotatably connected to the bottom of the coil through a bearing, a threaded sleeve is fixedly connected to the bottom of the first rotating shaft, a plurality of stirring columns are fixedly connected to the outer surface of the threaded sleeve, a support column is fixedly connected to the bottom of the inner cavity of the shock-absorbing tube, a fixed partition block is fixedly connected to the top of the support column, two liquid flow ports that are connected are respectively opened at the top and bottom of the fixed partition block, a screw rod is fixedly connected to the top of the fixed partition block, the threaded sleeve is threadedly sleeved on the top end of the screw rod, two symmetrical connecting columns are fixedly connected to the bottom of the shock-absorbing tube, a connecting block is fixedly connected to the bottom ends of the two connecting columns together, a connecting ring is fixedly connected to the bottom of the connecting block, a rotating block is opened on the inner wall of the connecting ring, a second rotating shaft is rotatably connected to the inside of the rotating block, a rotating block is fixedly connected to the bottom end of the second rotating shaft, the top end of the second rotating shaft is rotatably inserted into the inside of the fixed partition block, a rotating stop block is fixedly connected to the top end of the second rotating shaft, a liquid inlet and a liquid outlet are opened on the outer surface of the shock-absorbing tube, and a first piston and a second piston are respectively plugged into the inside of the liquid inlet and the liquid outlet.

[0007] Preferably, a plurality of the stirring columns are rotatably arranged inside the shock-absorbing tube, and one ends of the plurality of stirring columns are spaced from the inner wall of the shock-absorbing tube, and the plurality of stirring columns are all located between the fixed partition block and the coil.

[0008] Preferably, the rotating stop block is rotatably arranged inside the fixed partition block, and two ends of the rotating stop block are respectively in contact with the inner walls of the fixed partition block, and the top of the rotating stop block is in contact with the top of the inner cavity of the fixed partition block, and the width of the rotating stop block is greater than the aperture of the liquid flow port.

[0009] Preferably, the rotating block is a circular block, and the fixed partition block is rotatably arranged inside the operation groove, and the second rotating shaft is rotatably arranged between the two connecting columns.

[0010] Preferably, the length of the screw rod matches the length of the threaded sleeve, a threaded groove matching the screw rod is formed inside the threaded sleeve, and the top end of the screw rod is threadedly inserted into the bottom of the inner cavity of the threaded sleeve.

[0011] The technical solution provided by the present utility model has the following beneficial effects compared with the prior art:

[0012] Through the arrangement of the threaded sleeve inside the shock-absorbing tube of the present utility model, no matter what the state of the magnetorheological fluid inside the shock-absorbing tube is, as long as the shock-absorbing tube performs shock-absorbing work, through the lifting and rotation of the threaded sleeve on the screw rod, a plurality of stirring columns can be used to stir the magnetorheological fluid inside the shock-absorbing tube, avoiding the possibility of precipitation of the magnetorheological fluid. And even if there is a precipitation problem, by changing the rotation position of the rotating stop block, the simple liquid filling and impurity removal work of the magnetorheological fluid inside the shock-absorbing tube can still be carried out, ensuring the working efficiency of the magnetorheological fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is an exploded schematic structural diagram of the shock-absorbing tube of the present utility model;

[0015] Figure 3 is an exploded schematic structural diagram of the fixed partition block of the present utility model;

[0016] Figure 4 is Figure 3 the enlarged structural schematic diagram at A in

[0017] In the figure: 1, shock-absorbing pipe; 2, first piston; 3, connecting rod; 4, internal piston; 5, coil; 6, first rotating shaft; 7, threaded sleeve; 8, stirring column; 9, screw; 10, fixed partition block; 11, liquid flow port; 12, support column; 13, second piston; 14, connecting column; 15, second rotating shaft; 16, connecting block; 17, connecting ring; 18, rotating block; 19, operation groove; 20, rotating stop block. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] Obviously, many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed in the following specification.

[0020] Please refer to Figures 1-4, the utility model provides a single-cylinder magnetorheological automotive shock absorber, which includes a shock absorber tube 1. A connecting rod 3 is elastically inserted into the interior of the shock absorber tube 1. An internal piston 4 is fixedly sleeved on the outer surface of the connecting rod 3. A coil 5 is electrically connected to the bottom end of the connecting rod 3. The bottom of the coil 5 is rotatably connected to a first rotating shaft 6 through a bearing. A threaded sleeve 7 is fixedly connected to the bottom of the first rotating shaft 6. A plurality of stirring columns 8 are fixedly connected to the outer surface of the 7. A support column 12 is fixedly connected to the bottom of the inner cavity of the shock absorber tube 1. A fixed partition block 10 is fixedly connected to the top of the support column 12. Two liquid flow ports 11 that communicate with each other are opened at the top and bottom of the fixed partition block 10. A screw rod 9 is fixedly connected to the top of the fixed partition block 10. The threaded sleeve 7 is threadedly sleeved on the top end of the screw rod 9. Two symmetric connecting columns 14 are fixedly connected to the bottom of the shock absorber tube 1. A connecting block 16 is fixedly connected to the bottom ends of the two connecting columns 14. A connecting ring 17 is fixedly connected to the bottom of the connecting block 16. A rotating block 18 is opened on the inner wall of the connecting ring 17. A second rotating shaft 15 is rotatably connected to the inside of the rotating block 18. A rotating block 18 is fixedly connected to the bottom end of the second rotating shaft 15. The top end of the second rotating shaft 15 is rotatably inserted into the inside of the fixed partition block 10. A rotating stop block 20 is fixedly connected to the top end of the second rotating shaft 15. Liquid inlets and outlets are opened on the outer surface of the shock absorber tube 1. A first piston 2 and a second piston 13 are respectively plugged into the inner parts of the liquid inlets and outlets. When the shock absorber tube 1 is officially installed and used, during the shock absorption of the shock absorber tube 1, whether or not the state of the magnetorheological fluid inside the shock absorber tube 1 is changed, the connecting rod 3 will still drive the connecting rod 3 and the coil 5 to reciprocally slide inside the shock absorber tube 1. At this time, the threaded sleeve 7 will lift and lower on the outside of the screw rod 9. Under the threaded insertion of the screw rod 9, the threaded sleeve 7 will rotate on the outer surface of the screw rod 9. Thus, inside the shock absorber tube 1, a plurality of stirring columns 8 are used to stir the magnetorheological fluid inside the shock absorber tube 1 at a high frequency, so as to most likely avoid the problem of precipitation of the magnetorheological fluid. If there is still magnetorheological fluid precipitation inside the shock absorber tube 1, by opening the liquid flow ports 11 on the fixed partition block 10, the precipitate can be made to be between the fixed partition block 10 and the bottom of the inner cavity of the shock absorber tube 1. When dealing with the precipitate, by rotating the rotating block 18 and using the rotating stop block 20 to block the two liquid flow ports 11 at the top of the fixed partition block 10, the impurity removal work can be carried out after removing the connecting block 16. And the liquid filling work can be carried out through the first piston 2 to ensure the working efficiency of the magnetorheological fluid.

[0021] To avoid the precipitation problem of the magnetorheological fluid inside the shock absorber tube 1, a plurality of stirring columns 8 are rotatably arranged inside the shock absorber tube 1. One end of each of the plurality of stirring columns 8 forms a distance from the inner wall of the shock absorber tube 1. And the plurality of stirring columns 8 are all located between the fixed partition block 10 and the coil 5.

[0022] In order to control whether the magnetorheological fluid inside the shock-absorbing tube 1 can flow through the fixed partition block 10 by rotating the rotating block 20, so as to facilitate filling and impurity removal, the rotating block 20 is rotatably arranged inside the fixed partition block 10, and both ends of the rotating block 20 are respectively in contact with the inner wall of the fixed partition block 10, and the top of the rotating block 20 is in contact with the top of the inner cavity of the fixed partition block 10, and the width of the rotating block 20 is greater than the aperture of the liquid flow port 11.

[0023] Furthermore, in order to facilitate adjusting the position of the rotating block 20 inside the fixed partition block 10, the rotating block 18 is a circular block, and the fixed partition block 10 is rotatably arranged inside the operation groove 19, and the second rotating shaft 15 is rotatably arranged between the two connecting columns 14.

[0024] Moreover, in order to more conveniently utilize the lifting of the threaded sleeve 7 to drive the plurality of stirring columns 8 to stir the magnetorheological fluid inside the shock-absorbing tube 1, the length of the screw rod 9 is matched with the length of the threaded sleeve 7, a threaded groove matching the screw rod 9 is provided inside the threaded sleeve 7, and the top end of the screw rod 9 is threadedly inserted into the bottom of the inner cavity of the threaded sleeve 7.

[0025] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0026] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0027] In addition, any combination can be made between various different embodiments of the present invention as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. A single-tube magnetorheological automotive shock absorber, comprising a shock absorber tube (1), characterized in that: A connecting rod (3) is elastically inserted inside the shock-absorbing pipe (1), and an internal piston (4) is fixedly sleeved on the outer surface of the connecting rod (3). A coil (5) is electrically connected to the bottom end of the connecting rod (3). The bottom of the coil (5) is rotatably connected to a first rotating shaft (6) through a bearing. A threaded sleeve (7) is fixedly connected to the bottom of the first rotating shaft (6). A plurality of stirring columns (8) are fixedly connected to the outer surface of the (7). A support column (12) is fixedly connected to the bottom of the inner cavity of the shock-absorbing pipe (1). A fixed partition block (10) is fixedly connected to the top of the support column (12). Two liquid flow ports (11) which are communicated with each other are respectively formed in the top and the bottom of the fixed partition block (10). A screw rod (9) is fixedly connected to the top of the fixed partition block (10). The threaded sleeve (7) is threadedly sleeved on the top end of the screw rod (9). Two symmetric connecting columns (14) are fixedly connected to the bottom of the shock-absorbing pipe (1). A connecting block (16) is fixedly connected to the bottom ends of the two connecting columns (14). A connecting ring (17) is fixedly connected to the bottom of the connecting block (16). A rotating block (18) is formed on the inner wall of the connecting ring (17). A second rotating shaft (15) is rotatably connected to the inside of the rotating block (18). A rotating block (18) is fixedly connected to the bottom end of the second rotating shaft (15). The top end of the second rotating shaft (15) is rotatably inserted into the inside of the fixed partition block (10). A rotating stop block (20) is fixedly connected to the top end of the second rotating shaft (15). An inlet and an outlet are formed on the outer surface of the shock-absorbing pipe (1), and a first piston (2) and a second piston (13) are respectively plugged into the inside of the inlet and the outlet.

2. The single-tube magnetorheological vehicle shock absorber according to claim 1, wherein: A plurality of the stirring columns (8) are rotatably arranged inside the shock-absorbing pipe (1). One ends of the plurality of the stirring columns (8) are spaced from the inner wall of the shock-absorbing pipe (1). The plurality of the stirring columns (8) are all located between the fixed partition block (10) and the coil (5).

3. A single-tube magnetorheological vehicle shock absorber according to claim 1, characterized in that: The rotating stop block (20) is rotatably arranged inside the fixed partition block (10). Two ends of the rotating stop block (20) are respectively attached to the inner walls of the fixed partition block (10). The top of the rotating stop block (20) is attached to the top of the inner cavity of the fixed partition block (10). The width of the rotating stop block (20) is greater than the aperture of the liquid flow port (11).

4. A single-cylinder magnetorheological vehicle shock absorber according to claim 1, characterized in that: The rotating block (18) is a circular block. The fixed partition block (10) is rotatably arranged inside the operation slot (19). The second rotating shaft (15) is rotatably arranged between the two connecting columns (14).

5. A single-cylinder magnetorheological vehicle shock absorber according to claim 1, characterized in that: The length of the screw rod (9) matches the length of the threaded sleeve (7). A threaded groove matching the screw rod (9) is formed inside the threaded sleeve (7). The top end of the screw rod (9) is threadedly inserted into the bottom of the inner cavity of the threaded sleeve (7).

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