Automotive adjustable shock absorber motor

Abstract

This utility model discloses an adjustable shock absorber motor for automobiles, comprising a cylindrical motor stator and a rod-shaped motor mover. The lower half of the motor mover is installed in the inner cavity of the motor stator. The motor mover includes a motor spindle, which is divided into an upper spindle section and a lower spindle section. A coil and a guide ring are provided on the outer periphery of the lower spindle section. The guide ring matches the inner cavity of the motor stator, and the outer diameter of the guide ring is larger than the outer diameter of the coil. A storage cavity is provided inside the lower spindle section, which is filled with magnetorheological fluid. A control rod corresponding to the magnetorheological fluid is vertically provided at the bottom of the inner cavity of the motor stator, and the top of the control rod passes through the storage cavity. This utility model allows vehicles to control shock absorption by controlling the motor and magnetorheological fluid, effectively improving the driving experience, reducing vibration during vehicle operation, and adjusting the shock absorption effect and suspension height and stiffness in real time according to road conditions.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, and in particular to an adjustable shock-absorbing motor for automobiles. Background Technology

[0002] Currently, existing cars rely on springs for shock absorption during operation. Springs have poor shock absorption performance, generate a lot of noise, and cannot adjust spring parameters in real time according to road conditions to improve shock absorption. Furthermore, the suspension height and stiffness cannot be adjusted. Utility Model Content

[0003] The technical problem to be solved by this utility model embodiment is to provide an adjustable shock absorber motor for automobiles, so that it can replace springs and be applied to automobile suspensions, making it convenient to adjust the suspension height and stiffness.

[0004] To address the aforementioned technical problems, this utility model proposes an adjustable automotive shock absorber motor, comprising a cylindrical motor stator and a rod-shaped motor mover. The lower half of the motor mover is installed within the inner cavity of the motor stator. The motor mover includes a motor spindle, which is divided into an upper spindle section and a lower spindle section. A coil and a guide ring are provided on the outer periphery of the lower spindle section. The guide ring matches the inner cavity of the motor stator, and the outer diameter of the guide ring is larger than the outer diameter of the coil. A storage cavity is provided within the lower spindle section, and the storage cavity is filled with magnetorheological fluid. A control rod corresponding to the magnetorheological fluid is vertically provided at the bottom of the inner cavity of the motor stator, and the top of the control rod passes through the storage cavity.

[0005] Furthermore, there are two guide rings, located on the upper and lower sides of the coil respectively.

[0006] Furthermore, two code tracks are vertically embedded in the upper spindle section, and an encoder is correspondingly provided on the motor stator. The code tracks are composed of multiple stacked magnets.

[0007] Furthermore, the two code tracks are staggered vertically, and the number of magnets and the magnetic period of the two code tracks are different.

[0008] Furthermore, the magnet is cylindrical.

[0009] Furthermore, the motor spindle is equipped with a water channel for water cooling. The water channel is arranged in an S-shape radially inside the motor spindle, and the water inlet and outlet are located on the upper end face of the motor spindle.

[0010] Furthermore, the motor stator is provided with an air passage for connecting the top and bottom of the inner cavity, and the motor stator is provided with an air hole for connecting the inner cavity and the outside, with a filter screen provided at the air hole.

[0011] Furthermore, the filter screen is fixed by a pressure cap, which has ventilation holes.

[0012] Furthermore, the motor also includes a three-phase motor power line, a hollow upper main shaft section, the three-phase motor power line passing through the upper main shaft section and the upper guide ring and electrically connected to the coil, and an anti-rotation block protruding inside the upper guide ring, with a corresponding anti-rotation groove opened on the motor main shaft.

[0013] Furthermore, buffer pads are provided on the upper and lower sides of the lower spindle section.

[0014] The beneficial effects of this utility model are as follows: This utility model makes it convenient for vehicles to control the shock absorption of automobiles by controlling the motor and magnetorheological fluid, effectively improving the driving experience of automobiles, reducing vibration during vehicle operation, and adjusting the shock absorption effect, as well as the height and stiffness of the suspension, in real time according to road conditions. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the adjustable shock absorber motor for automobiles according to an embodiment of this utility model.

[0016] Figure 2 This is a top view of an adjustable shock absorber motor for automobiles according to an embodiment of this utility model.

[0017] Figure 3 yes Figure 2 Enlarged view of point C in the middle.

[0018] Figure 4 yes Figure 2 Sectional view at point AA.

[0019] Figure 5 yes Figure 4 Enlarged view of point D in the middle.

[0020] Figure 6 yes Figure 2 Sectional view at point BB.

[0021] Figure 7 This is a three-dimensional structural diagram of the motor actuator according to an embodiment of the present invention.

[0022] Explanation of icon numbers 10. Motor stator; 11. Guide sleeve; 12. Magnet; 13. Motor housing; 14. Dustproof sealing ring; 15. Control rod; 16. Encoder; 17. Air vent; 18. Filter screen; 19. Cover; 20. Motor mover; 21. Motor spindle; 22. Coil; 23. Guide ring; 24. Storage cavity; 25. Track; 26. Motor power line; 27. Buffer pad; 28. Water inlet; 29. ​​Water outlet; 30. Cable trough. Detailed Implementation

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] In this embodiment of the invention, directional indicators (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicators will also change accordingly.

[0025] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0026] Please refer to Figures 1 to 7 The adjustable shock absorber motor for automobiles according to this embodiment of the invention consists of a cylindrical motor stator and a rod-shaped motor mover. The motor stator consists of a guide sleeve, a magnet, and a motor housing. The guide sleeve encapsulates the magnet within the motor housing.

[0027] The lower half of the motor mover is installed inside the motor stator. The motor mover includes the motor main shaft. The motor main shaft is divided into an upper main shaft section and a lower main shaft section. That is, the lower main shaft section is located inside the motor stator, and the upper main shaft section is movably mounted on the motor stator. The upper main shaft section and the motor stator are sealed by a dustproof sealing ring provided on the motor stator. This utility model achieves shock absorption and suspension height adjustment by controlling the movement and stroke of the motor mover. This utility model enables the vehicle to more effectively absorb and mitigate the impact and vibration from the road surface, thereby improving driving stability and passenger comfort.

[0028] The lower main shaft section has a coil and a guide ring on its outer periphery. The guide ring matches the inner cavity of the motor stator, and the outer diameter of the guide ring is larger than the outer diameter of the coil. The motor mover is guided by the cooperation between the guide ring and the inner cavity of the motor stator (i.e., the guide sleeve). Preferably, there are two guide rings, located on the upper and lower sides of the coil respectively.

[0029] The lower main shaft section contains a storage cavity filled with magnetorheological fluid. A control rod corresponding to the magnetorheological fluid is vertically mounted at the bottom of the motor stator's inner cavity, with its top movably inserted into the storage cavity. The control rod is connected to the vehicle's control system, and its resistance within the magnetorheological fluid is controlled by altering the fluid's state, thus achieving adjustable damping. This invention allows vehicles to adjust the damping force of their suspension by controlling the state of the magnetorheological fluid, thereby adjusting the overall driving style. Drivers can select appropriate damping settings based on road conditions and personal preference for the optimal driving experience.

[0030] The lower spindle section has corresponding buffer pads on both the upper and lower sides. The buffer pads are used to cushion the motor actuator when it moves to the top and bottom of its stroke.

[0031] In one implementation, two code tracks are vertically embedded within the upper main shaft section, and an encoder is correspondingly mounted on the motor stator. Each code track consists of multiple stacked magnets. The two code tracks are staggered vertically, and the number of magnets and the magnetic period differ between the two tracks (i.e., they have different resolutions). These magnets in the code tracks move with the displacement of the motor mover, thereby changing the distance between them and the encoder. A Hall element inside the encoder can detect changes in the magnetic field of the magnets and output an electrical signal, the magnitude of which is proportional to the magnetic field strength. By decoding the output electrical signal, the linear displacement of the motor mover can be accurately measured. The two code tracks further improve detection accuracy, thus facilitating more precise vibration damping in automobiles.

[0032] Preferably, the magnet is cylindrical to facilitate assembly; that is, a round hole is drilled in the upper spindle section, and then the magnets are stacked and placed in to achieve rapid assembly.

[0033] In one implementation, the motor spindle is equipped with water cooling channels arranged radially in an S-shape within the spindle. The inlet and outlet of the water channels are located on the upper end face of the motor spindle. The reversal points of the water channels can be directly welded shut.

[0034] In one implementation, the motor stator has an air hole for connecting the inner cavity and the outside, and the motor stator has an air passage for connecting the top and bottom of the inner cavity. A filter screen is installed at the air hole. The filter screen is fixed by a pressure cap with a vent hole. When the motor rotor moves up and down, the air in the upper and lower chambers of the inner cavity is compressed. It is necessary to convect the air in the two chambers to effectively balance the pressure in the two chambers. At the same time, air convection is needed between the inner and outer chambers to balance the pressure in the inner and outer chambers. To prevent external dirt from entering the motor, this invention sets a dustproof sealing ring between the motor spindle and the motor stator (i.e., the motor housing), and sets an air filter screen on the motor housing.

[0035] In one implementation, the motor actuator includes three-phase motor power lines, a hollow upper main shaft section, and the three-phase motor power lines passing through the upper main shaft section and the upper guide ring to be electrically connected to the coil. Preferably, the three-phase motor power lines are staggered (up to 120°) as they pass through the upper guide ring.

[0036] This invention separates the high-voltage line and the control line (encoder) of the motor, which can effectively avoid interference from the high-voltage line to the control line and improve the stability of motor operation.

[0037] The upper guide ring has a groove for the motor power line to pass through, which facilitates accurate assembly of the guide ring. An anti-rotation block protrudes from the inner side of the upper guide ring, and a corresponding anti-rotation groove is formed on the motor spindle.

[0038] The lifting force provided by the motor actuator of this invention can raise the entire vehicle to the required height and adjust its overall posture. This not only improves the vehicle's appearance and stance but also increases its ground clearance, enhancing its ability to traverse complex terrain and obstacles. This invention also reduces bumps and swaying during vehicle operation, improving handling and stability, thereby enhancing safety during driving.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable shock absorber motor for automobiles, comprising a cylindrical motor stator and a rod-shaped motor mover, wherein the lower half of the motor mover is installed in the inner cavity of the motor stator, and the motor mover includes a motor main shaft, characterized in that, The motor spindle is divided into an upper spindle section and a lower spindle section. The lower spindle section has a coil and a guide ring on its outer periphery. The guide ring matches the inner cavity of the motor stator, and the outer diameter of the guide ring is larger than the outer diameter of the coil. The lower spindle section has a storage cavity filled with magnetorheological fluid. The bottom of the inner cavity of the motor stator has a control rod corresponding to the magnetorheological fluid, and the top of the control rod passes through the storage cavity.

2. The adjustable automotive shock absorber motor as described in claim 1, characterized in that, There are two guide rings, located on the top and bottom sides of the coil, respectively.

3. The adjustable automotive shock absorber motor as described in claim 1, characterized in that, Two code tracks are vertically embedded in the upper main shaft section, and an encoder is correspondingly installed on the motor stator. The code tracks are composed of multiple stacked magnets.

4. The adjustable automotive shock absorber motor as described in claim 3, characterized in that, The two code tracks are staggered vertically, and the number of magnets and the magnetic period of the two code tracks are different.

5. The adjustable automotive shock absorber motor as described in claim 3, characterized in that, The magnet is cylindrical.

6. The adjustable automotive shock absorber motor as described in claim 1, characterized in that, The motor spindle is equipped with a water cooling channel. The water channel is arranged in an S-shape radially inside the motor spindle, and the water inlet and outlet are located on the upper end face of the motor spindle.

7. The adjustable automotive shock absorber motor as described in claim 1, characterized in that, The motor stator has an air passage connecting the top and bottom of the inner cavity, and an air hole connecting the inner cavity and the outside. A filter screen is installed at the air hole.

8. The adjustable automotive shock absorber motor as described in claim 7, characterized in that, The filter screen is fixed by a pressure cap, which has ventilation holes.

9. The adjustable automotive shock absorber motor as described in claim 2, characterized in that, The motor also includes a three-phase motor power line, a hollow upper main shaft section, and the three-phase motor power line passes through the upper main shaft section and the upper guide ring to be electrically connected to the coil. An anti-rotation block is protruding on the inner side of the upper guide ring, and an anti-rotation groove is correspondingly opened on the motor main shaft.

10. The adjustable automotive shock absorber motor as described in claim 1, characterized in that, Buffer pads are provided on the upper and lower sides of the lower spindle section.

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