A suspension damper

Abstract

The utility model discloses a kind of suspension shock absorber, it is related to vehicle shock absorber field;To solve the problem that existing electromagnetic shock absorber needs to overcome damping work, the following technical scheme is presented: including linear motor and guide cooling rod, guide cooling rod top is equipped with upper connecting assembly, guide cooling rod bottom is equipped with lower connecting assembly, and upper connecting assembly and lower connecting assembly are connected with vehicle body suspension;Guide cooling rod provides guide for linear motor and transfers acting force;Linear motor passes through the direction of action of magnetic force control electromagnetic force by adjusting magnetic flux, when vehicle body suspension moves upward, linear motor adjusts the direction of current and generates downward electromagnetic force, when vehicle body suspension moves downward, linear motor adjusts the direction of current and generates upward electromagnetic force, auxiliary vehicle body suspension to cope with impact.The utility model can realize active, accurate control to vehicle body suspension movement, with fast response speed, high adjustment accuracy, damping effect is good and the like, can effectively improve the driving stability of vehicle.

Description

Technical Field

[0001] This utility model relates to the field of vehicle shock absorber technology, specifically to a suspension shock absorber. Background Technology

[0002] As an indispensable and crucial component of a car, the suspension system plays a vital role in the overall performance of the vehicle. It undertakes the important task of connecting the wheels and the body, not only providing necessary support for the vehicle body but also effectively buffering impacts from the road surface and significantly reducing body vibration. This creates a smoother and more comfortable driving environment for passengers, while also contributing to improved vehicle handling stability and driving safety.

[0003] In traditional automotive technology, suspension systems largely rely on mechanical components such as springs and shock absorbers to perform their functions. Springs absorb and release energy through their elastic deformation, acting as a buffer; shock absorbers dissipate vibration energy through the flow resistance of internal fluid, achieving a damping effect. However, this traditional mechanical suspension system has some significant limitations. The response speed of springs and shock absorbers is relatively slow, unable to react promptly and accurately to complex changes in road conditions, resulting in insufficient adjustment capability of the suspension system when dealing with sudden road conditions. Furthermore, its adjustment precision is not high, making it difficult to precisely and flexibly adjust the stiffness and damping of the suspension according to different driving conditions and needs, thus affecting the vehicle's ride quality and performance to some extent.

[0004] With the rapid development of electric vehicle technology, the automotive industry's performance requirements for suspension systems are also increasing. Electric vehicles have unique power characteristics and driving features, requiring suspension systems to have faster response speeds, higher adjustment precision, and stronger adaptability. Utility model patent CN103925324A discloses a twin-tube shock absorber device with a linear motor and damping connected in series. This device attempts to achieve suspension damping by using electromagnetic damping force and the twin-tube shock absorber together to provide damping force. However, in actual operation, when the motor performs damping work, it needs to overcome the damping of traditional shock absorbers, which undoubtedly greatly reduces the damping effect and makes it difficult to meet the high performance requirements of electric vehicle suspension systems. Utility Model Content

[0005] The purpose of this invention is to provide a suspension vibration damper to solve the problem that existing electromagnetic vibration dampers require overcoming traditional damping resistance when the motor is performing vibration damping work, thus reducing the vibration damping effect.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A suspension damper includes: a linear motor, which is sleeved on the outside of a guide cooling rod via a bushing; an upper connecting assembly is provided at the top of the guide cooling rod, and a lower connecting assembly is provided at the bottom of the guide cooling rod; both the upper and lower connecting assemblies are connected to the vehicle suspension; the guide cooling rod provides guidance for the linear motor and transmits force.

[0008] The linear motor controls the direction of the electromagnetic force by adjusting the magnetic flux. When the vehicle suspension moves upward, the linear motor adjusts the current direction to generate a downward electromagnetic force, and when the vehicle suspension moves downward, the linear motor adjusts the current direction to generate an upward electromagnetic force, thus assisting the vehicle suspension in coping with impacts.

[0009] Preferably, a first sliding bearing is provided between the guide cooling rod and the linear motor.

[0010] Preferably, the linear motor includes a motor inner housing sleeved outside the first sliding bearing, an iron core fixedly mounted on the motor inner housing, the iron core wound around the outside of the motor inner housing, a coil installed between the iron cores, and the outside of the iron core fixed inside the bushing. The motor inner housing, the coil, and the iron core constitute the motor stator.

[0011] Preferably, the linear motor has an external motor housing, which is fixed to the motor base. The lower end of the motor base is fixed to the top of the lower connecting assembly. The bushing has a permanent magnet on its outside. The bushing, the permanent magnet, and the motor housing together form the motor mover. Adjusting the direction of the current in the linear motor causes the motor mover to generate an upward or downward electromagnetic force.

[0012] Preferably, the upper connection assembly includes a vehicle suspension connector, which is fixed to the guide cooling rod by a locking nut.

[0013] Preferably, the lower end of the vehicle body suspension connector is equipped with a dust cover.

[0014] Preferably, the guide cooling rod has a guide hole opened along the axial direction inside, and the lower connecting component includes a guide post set inside the guide hole. A second sliding bearing is provided between the guide hole and the guide post, and a limiting block is sleeved on the bottom of the guide post. The limiting block is installed on the bottom of the inner side of the motor base.

[0015] Preferably, the bottom of the guide column is provided with a connecting rod, and the bottom of the connecting rod is fitted with a connecting ring, which is connected to the vehicle suspension.

[0016] As a preferred option, a vibration damping sleeve is installed inside the connecting ring.

[0017] Preferably, cooling holes are formed along the axial direction on the side wall of the guide cooling rod.

[0018] This utility model has the following beneficial effects:

[0019] The linear motor controls the direction of the electromagnetic force by adjusting the magnetic flux. When the vehicle suspension moves upward, it generates a downward electromagnetic force, and when it moves downward, it generates an upward electromagnetic force. It can actively cope with impacts and can more effectively control vehicle vibration and improve the damping effect compared with traditional passive shock absorbers.

[0020] The rapid response of the linear motor allows the suspension damper to quickly adjust the electromagnetic force, actively adapting to suspension movement, reducing body sway and bumps, and enhancing vehicle stability during driving, especially maintaining a smooth ride in complex road conditions. Actively controlling suspension movement effectively reduces vibration transmission to the vehicle body, minimizing bumps and vibrations felt by passengers, and providing a smoother and more comfortable ride.

[0021] A first sliding bearing is installed between the guide cooling rod and the linear motor, and a second sliding bearing is installed between the guide hole and the guide post. This reduces friction between moving parts, lowers energy loss, improves mechanical efficiency, and extends the service life of the shock absorber.

[0022] The guide cooling rod provides guidance for the linear motor and transmits force. The guide column and guide hole cooperate to ensure that the vibration damper maintains the correct direction during movement and avoids deviation. The limit block is installed on the bottom inner side of the motor base to limit and buffer, preventing damage caused by excessive movement of moving parts.

[0023] The cooling rod has cooling holes along its sidewalls along the axial direction, which helps to dissipate the heat generated by components such as linear motors during operation, ensuring that the vibration damper operates at a suitable temperature and improving its reliability and stability. Attached Figure Description

[0024] Figure 1 This is a schematic cross-sectional view of the suspension vibration damper of this utility model;

[0025] Figure 2 This is a cross-sectional schematic diagram of the connection mechanism of the suspension shock absorber of this utility model;

[0026] Figure 3 This is a schematic cross-sectional view of the linear motor of the suspension vibration damper of this utility model;

[0027] Figure 4 for Figure 1 A magnified view of a section at point A in the middle;

[0028] Figures 1 to 4 The reference numerals in the attached drawings represent: linear motor 1, upper connecting structure 2, first sliding bearing 3, dust cover 4, guide cooling rod 5, motor inner shell 6, coil 7, iron core 8, bushing 9, permanent magnet 10, motor outer shell 11, motor base 12, second sliding bearing 13, guide column 14, limit block 15, connecting rod 16, connecting ring 17, vibration damping sleeve 18, locking nut 19, guide hole 20, and cooling hole 21. Detailed Implementation

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. In this utility model, the terms "longitudinal," "lateral," "vertical," "upper," "lower," "front," "rear," "left," "right," "top," and "bottom," etc., indicate the orientation or positional relationship based on the appendix. Figure 2 The orientation or positional relationship shown is for the purpose of describing the present invention only, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0030] Please refer to Figure 1-4 The suspension damper provided by this utility model, as a core component of the suspension system, achieves active and precise control of the vehicle suspension movement through an innovative electromagnetic control principle, effectively improving the vehicle's driving stability and ride comfort. The specific implementation method of this suspension damper will be described in detail below.

[0031] This suspension vibration damper mainly consists of a linear motor, a guide cooling rod, an upper connecting assembly, a lower connecting assembly, and related auxiliary components. These parts work closely together to achieve the vibration damping function.

[0032] The linear motor 1 is the core power component of this suspension damper, and it is sleeved on the outside of the guide cooling rod 5 via a bushing 9. This sleeved arrangement ensures that the linear motor 1 can move stably along the guide cooling rod 5. The guide cooling rod 5 has an upper connecting assembly at its top and a lower connecting assembly at its bottom, both of which are reliably connected to the vehicle suspension, thus fixing the entire suspension damper to the vehicle suspension system and providing support and force transmission. The guide cooling rod 5 not only provides precise guidance for the movement of the linear motor 1, ensuring that its movement direction is always along the axial direction and avoiding deviation or swaying, but also effectively transmits the forces acting on the vehicle suspension to the linear motor 1, enabling the linear motor 1 to respond promptly according to the movement state of the vehicle suspension.

[0033] The linear motor 1 has a compact internal structure, including a motor inner housing 6 fitted outside the first sliding bearing 3. The first sliding bearing 3 is fixed to the outside of the guide cooling rod 5 and is in close contact with the motor inner housing 6. The function of the first sliding bearing 3 is to effectively reduce the sliding friction between the motor inner housing 6 and the guide cooling rod 5, making the linear motor 1 move more smoothly, reducing energy loss, and improving the response speed and motion accuracy of the linear motor 1.

[0034] An iron core 8 is fixedly mounted on the inner housing 6 of the motor. The iron core 8 is wound around the outside of the inner housing 6, and a coil 7 is installed between the iron cores 8. The outer side of the iron core 8 is fixed inside the bushing 9, and a permanent magnet 10 is provided on the outside of the bushing 9. The inner housing 6, the coil 7, and the iron core 8 together form the motor stator. This structural layout enables the linear motor 1 to form a complete electromagnetic circuit.

[0035] The linear motor 1 has an external motor housing 11, which is fixed to the motor base 12. The lower end of the motor base 12 is fixed to the top of the lower connecting assembly. The bushing 9, the permanent magnet 10, and the motor housing 11 together constitute the motor mover. The motor housing 11 not only protects the internal components of the linear motor 1, preventing external dust and moisture from entering the motor and affecting its normal operation, but also provides a mounting position for the permanent magnet 10, ensuring that the permanent magnet 10 can be stably fixed to the outside of the linear motor 1 and maintain a suitable distance from the iron core 8 to generate effective electromagnetic force. The motor base 12 serves as a connection and support, tightly connecting the linear motor 1 to the lower connecting assembly, making the entire suspension damper a stable integrated structure.

[0036] The upper connecting assembly mainly includes the vehicle suspension connecting component 2, which comprises a frame, rubber bushings, and nuts, among other components. The vehicle suspension connecting component 2 is fixed to the guide cooling rod 5 by a locking nut 19. The locking nut 19 is tightly connected to the guide cooling rod 5, firmly securing the upper connecting assembly to the top of the guide cooling rod 5, thus providing a fastening function and ensuring that the upper connecting assembly will not loosen or fall off during vehicle operation.

[0037] The upper end of the vehicle suspension connector 2 is connected to the vehicle body, and the lower end is connected to the dust cover 4. During installation, the upper end of the vehicle suspension connector 2 is first reliably connected to the corresponding part of the vehicle body to ensure a firm connection capable of withstanding the forces transmitted from the vehicle suspension. Then, the upper end of the dust cover 4 is fixed to the vehicle suspension connector 2, and the lower end is fixed to the motor housing 11. The main function of the dust cover 4 is to prevent dust, sand, and other impurities from entering the suspension damper and affecting the normal operation of the linear motor 1 and the smooth movement between the guide cooling rod 5 and the linear motor 1. Through this connection method, the upper connecting component not only achieves a reliable connection with the vehicle suspension but also provides effective dust protection for the entire suspension damper.

[0038] The lower connecting assembly includes a guide post 14 disposed within a guide hole 20 inside the guide cooling rod 5. A second sliding bearing 13 is provided between the guide hole 20 and the guide post 14. The second sliding bearing 13 is fixed to the outside of the guide post 14, and the outside of the second sliding bearing 13 is in close contact with the inner wall of the guide hole 20 inside the guide cooling rod 5. The function of the second sliding bearing 13 is similar to that of the first sliding bearing 3, which can reduce the sliding friction between the guide post 14 and the guide cooling rod 5, allowing the guide post 14 to move smoothly within the guide hole 20, while ensuring that the direction of movement of the guide post 14 is always consistent with the axial direction of the guide cooling rod 5, thus ensuring the movement accuracy and stability of the entire suspension damper.

[0039] A limiting block 15 is fitted onto the bottom of the guide column 14, and the limiting block 15 is installed on the bottom inner side of the motor base 12. The main function of the limiting block 15 is to limit and buffer. When the motor mover (shaft sleeve 9, permanent magnet 10, and motor housing 11) moves upward, the limiting block 15 moves synchronously with the motor mover. When the limiting block 15 moves to contact the bottom of the motor inner housing 6 and iron core 8 of the motor stator, the limiting block 15 plays a role in limiting and buffering, thereby preventing the motor mover, motor base 12, and guide column 14 from continuing to move upward, and preventing the guide column 14 from moving excessively upward and damaging other internal components of the suspension damper. At the same time, the limiting block 15 can also absorb some impact energy, reduce the impact force on the suspension damper, and extend its service life.

[0040] A connecting rod 16 is located at the bottom of the guide column 14, and a connecting ring 17 is fitted onto the bottom of the connecting rod 16. The connecting ring 17 connects to the vehicle suspension. The connecting rod 16 connects the guide column 14 and the connecting ring 17, transmitting the movement of the guide column 14 to the connecting ring 17, and then to the vehicle suspension. A damping sleeve 18 is installed inside the connecting ring 17, and the damping sleeve 18, together with the connecting ring 17, connects to the suspension. The damping sleeve 18 not only provides connection and support, but also absorbs and buffers vibration energy from the vehicle suspension to a certain extent, further enhancing the damping effect of the suspension shock absorber.

[0041] The top of the guide cooling rod 5 is connected to the locking nut 19, the bottom is in contact with the second sliding bearing 13, the middle has a guide hole 20 and a cooling hole 21, and the outer side is fixed with the first sliding bearing 3 and the motor housing 11.

[0042] The guide hole 20 provides a precise guiding channel for the movement of the guide column 14, ensuring that the guide column 14 can move stably along the axial direction, thereby guaranteeing the motion accuracy and stability of the entire suspension damper. During the operation of the suspension damper, the linear motor 1 generates a certain amount of heat. If the heat cannot be dissipated in time, it will affect the performance and lifespan of the linear motor 1. The presence of the cooling hole 21 allows the cooling medium (such as coolant) to flow inside the guide cooling rod 5, carrying away the heat generated by the linear motor 1, playing a good role in heat conduction (cooling), ensuring that the linear motor 1 always operates in a suitable temperature environment, and improving its reliability and stability.

[0043] When the suspension damper is working, the linear motor 1 is energized, and the magnitude and direction of the generated force are precisely controlled by adjusting the magnitude and direction of the magnetic flux. This active control method is one of the core advantages of this suspension damper.

[0044] When the suspension moves upward, for example, when the vehicle encounters a raised road obstacle while driving, the suspension experiences an upward impact force and moves upward. At this time, the sensors in the suspension damper (although not mentioned in detail in this embodiment, in actual applications, corresponding sensors would be equipped to detect the movement state of the vehicle suspension) detect the direction and speed of the suspension movement and transmit the signals to the control system. Based on the received signals, the control system adjusts the current direction of the linear motor 1, causing the permanent magnet 10 and the iron core 8 to generate downward resistance. This downward resistance is opposite to the upward movement trend of the vehicle suspension, thereby suppressing the upward movement of the entire vehicle, reducing vehicle body bumps and vibrations, and improving the vehicle's driving stability.

[0045] When the suspension pulls down (lowers), for example, when the vehicle travels over an uneven surface, the suspension experiences a downward pull and moves downward. Similarly, sensors detect this suspension motion and transmit the signals to the control system. The control system then adjusts the direction of the current in the linear motor 1, generating an upward force between the permanent magnet 10 and the iron core 8. This upward force assists the suspension in coping with impacts from the road surface, reducing the degree of vehicle descent and allowing the vehicle to traverse uneven surfaces more smoothly, further improving ride comfort.

[0046] The linear motor 1 possesses a rapid response characteristic, capable of reacting to the motion state of the vehicle suspension in a very short time and generating corresponding electromagnetic forces for adjustment. Compared to traditional passive dampers, this active and rapid control method can respond more promptly and accurately to complex changes in road conditions, effectively improving vehicle stability and ride comfort. Simultaneously, the guiding and cooling functions of the guide cooling rod 5, along with the close cooperation and optimized design between various components, ensure the reliability and stability of the suspension damper throughout its operation, extending its service life.

[0047] In practical applications, the installation and commissioning of suspension vibration dampers are strictly carried out in accordance with relevant specifications to ensure that they can perform their vibration damping function properly.

[0048] During installation, first, reliably connect the connecting ring 17 of the lower connecting assembly to the corresponding part of the vehicle suspension, ensuring a firm connection capable of withstanding the forces transmitted from the vehicle suspension. Then, install the guide cooling rod 5 by engaging its lower end with the guide post 14 of the lower connecting assembly, ensuring the guide post 14 can move smoothly within the guide hole 20 and that the second sliding bearing 13 can effectively reduce friction. Next, sleeve the linear motor 1 on the outside of the guide cooling rod 5 and fix it with the bushing 9, ensuring the first sliding bearing 3 is in close contact with the motor inner housing 6 to reduce sliding friction. Fix the motor housing 11 to the motor mount 12, and fix the lower end of the motor mount 12 to the top of the lower connecting assembly. Then, install the upper connecting assembly, connecting the upper end of the vehicle suspension connector 2 to the vehicle body and the lower end to the dust cover 4. Fix the dust cover 4 to the motor housing 11, ensuring the dust cover 4 effectively prevents dust, sand, and other impurities from entering the suspension damper. The vehicle suspension connector 2 is then fixed to the top of the guide cooling rod 5 by tightening the locking nut 19.

[0049] After installation, the suspension damper needs to be debugged. During debugging, first check that the connections between all components are secure and that there are no looseness or abnormalities. Then, use specialized debugging equipment to power on the linear motor 1, adjusting the current magnitude and direction, and observe the movement of the linear motor 1 and whether the generated electromagnetic force meets the design requirements. Simultaneously, debug the sensors and control system to ensure that the sensors can accurately detect the motion state of the vehicle suspension and accurately transmit the signals to the control system, which can then adjust the working state of the linear motor 1 promptly and accurately based on the received signals. Through multiple debugging and optimization processes, the suspension damper can achieve optimal damping performance under different driving conditions, improving vehicle stability and ride comfort.

[0050] In summary, this suspension damper, through its unique structural design, innovative electromagnetic control principle, and close cooperation between its components, achieves active and precise control of the vehicle's suspension motion. It boasts advantages such as fast response speed, high adjustment accuracy, and excellent damping effect, effectively improving vehicle driving stability and ride comfort. It has broad application prospects in the field of automotive suspension systems.

[0051] 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. A suspension vibration damper, characterized in that, include: A linear motor (1) is sleeved on the outside of a guide cooling rod (5) via a bushing (9). The top of the guide cooling rod (5) is provided with an upper connecting assembly, and the bottom of the guide cooling rod (5) is provided with a lower connecting assembly. Both the upper connecting assembly and the lower connecting assembly are connected to the vehicle suspension. The guide cooling rod (5) provides guidance for the linear motor (1) and transmits force. The linear motor (1) controls the direction of the electromagnetic force by adjusting the magnetic flux. When the vehicle suspension moves upward, the linear motor (1) adjusts the current direction to generate a downward electromagnetic force. When the vehicle suspension moves downward, the linear motor (1) adjusts the current direction to generate an upward electromagnetic force, thus assisting the vehicle suspension in coping with impacts.

2. The suspension vibration damper according to claim 1, characterized in that, A first sliding bearing (3) is provided between the guide cooling rod (5) and the linear motor (1).

3. The suspension vibration damper according to claim 2, characterized in that, The linear motor (1) includes a motor inner shell (6) sleeved outside the first sliding bearing (3), an iron core (8) is fixedly installed on the motor inner shell (6), the iron core (8) is wound around the outside of the motor inner shell (6), a coil (7) is installed between the iron cores (8), and the outside of the iron core (8) is fixed inside the bushing (9). The motor inner shell (6), the coil (7) and the iron core (8) constitute the motor stator.

4. The suspension vibration damper according to claim 1, characterized in that, The linear motor (1) is provided with a motor housing (11) on the outside. The motor housing (11) is fixed on the motor base (12). The lower end of the motor base (12) is fixed on the top of the lower connecting assembly. The bushing (9) is provided with a permanent magnet (10) on the outside. The bushing (9), the permanent magnet (10) and the motor housing (11) constitute the motor mover.

5. The suspension vibration damper according to claim 1, characterized in that, The upper connection assembly includes a vehicle suspension connector (2), which is fixed to the guide cooling rod (5) by a locking nut (19).

6. The suspension vibration damper according to claim 5, characterized in that, The lower end of the vehicle body suspension connector (2) is provided with a dust cover (4).

7. The suspension vibration damper according to claim 4, characterized in that, The guide cooling rod (5) has an axially oriented guide hole (20) inside. The lower connecting assembly includes a guide post (14) disposed inside the guide hole (20). A second sliding bearing (13) is provided between the guide hole (20) and the guide post (14). A limiting block (15) is sleeved on the bottom of the guide post (14). The limiting block (15) is installed on the bottom inner side of the motor base (12).

8. The suspension vibration damper according to claim 7, characterized in that, The bottom of the guide column (14) is provided with a connecting rod (16), and the bottom of the connecting rod (16) is fitted with a connecting ring (17), which is connected to the vehicle body suspension.

9. The suspension vibration damper according to claim 8, characterized in that, A vibration damping sleeve (18) is installed inside the connecting ring (17).

10. The suspension damper according to any one of claims 1 to 9, characterized in that, Cooling holes (21) are provided along the axial direction on the side wall of the guide cooling rod (5).

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