A compact electronically controlled three-variable suspension damping system and control method

Abstract

The application discloses a compact electrically-controlled three-variable suspension damping system and a control method. The system is composed of an electrically-controlled magnetic damping shock absorber, a height adjusting mechanism and a variable stiffness spring assembly nest. The damping is determined by the electrically-controlled magnetic damping shock absorber, forming a damping-adjustable characteristic. The height is determined by the height adjusting mechanism, forming a height-adjustable characteristic. The stiffness is determined by the variable stiffness spring assembly, forming a stiffness-adjustable characteristic.

Description

Technical Field

[0001] This invention belongs to the technical field of automotive suspension systems, specifically relating to a compact electronically controlled three-variable suspension damping system and control method. Background Technology

[0002] With the rapid development of my country's economy, users have increasingly higher requirements for comfort. To improve vehicle comfort, various shock absorber assemblies that can adjust damping, height, and stiffness have been developed, with air suspension and hydropneumatic suspension being the most common. Air suspension systems are now widely used in mid-to-high-end models.

[0003] Some car models, such as most sports cars, have limited interior space due to the overall design of the vehicle. Therefore, it is necessary to minimize the size of the suspension system and take up as little interior space as possible.

[0004] Air suspension and hydropneumatic suspension systems often require the installation of large air tanks, oil tanks, air pumps, and oil pumps inside the vehicle to adjust the height and stiffness of the shock absorber assembly, occupying a significant amount of interior space and making them only suitable for vehicles with ample interior space. Furthermore, the complex piping and wiring harnesses of air and hydropneumatic suspension systems pose considerable challenges to vehicle manufacturing and maintenance, increasing production and operating costs. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a compact electronically controlled three-variable suspension damping system and control method.

[0006] An electronically controlled three-variable suspension damping system includes a damper mounting base (6), a height adjustment structure, an electronically controlled magnetic damper, and a variable stiffness spring assembly. The electronically controlled magnetic damper is fixed to the damper mounting base (6) by a damper fixing buckle. The height adjustment mechanism and the variable stiffness spring assembly are arranged in series through the damper mounting base (6). The electronically controlled magnetic damper is located inside the variable stiffness spring assembly. The upper end of the height adjustment structure is connected to the vehicle body, and the lower end is connected to the upper end of the variable stiffness spring assembly through the damper mounting base (6). The lower end of the variable stiffness spring assembly is connected to the suspension swing arm.

[0007] Preferably, the electronically controlled magnetic damping shock absorber includes a shock absorber cylinder (2), an electromagnet (4), an induction coil (5), and a shock absorber fixing buckle (7);

[0008] Among them, the electronically controlled magnetic damping shock absorber includes a shock absorber cylinder (2), an electromagnet (4), an induction coil (5), and a shock absorber fixing buckle (7);

[0009] The variable stiffness spring assembly includes a damper core (1), a damper spring seat (3), a height adjustment spiral disc (10), a stiffness adjustment hollow ring motor (12), a stiffness adjustment motor seat (13), a stiffness adjustment spiral disc (14), a stiffness adjustment spiral tube (15), a small stiffness spring (16), a spring series ring (17), and a large stiffness spring (18).

[0010] In the electronically controlled magnetic damping shock absorber, an electromagnet (4) is installed at the upper end of the shock absorber core (1), and the lower end is fixed to the shock absorber spring seat (3). The lower end of the shock absorber spring seat (3) is fixed to the suspension arm of the vehicle. The upper end of the high stiffness spring 18 is connected to the spring series ring (17), and the lower end is connected to the shock absorber spring seat (3).

[0011] The small stiffness spring 16 is fitted on the outside of the stiffness adjustment spiral tube 15 and the stiffness adjustment hollow ring motor 12. Its lower end is connected to the spring series ring 17, and its upper end is connected to the height adjustment motor seat 9 of the height adjustment mechanism. The small stiffness spring 16 and the large stiffness spring 18 are embedded together in the spring series ring 17 to realize the spring series connection.

[0012] The stiffness adjustment motor base (13) is fixed on the damper mounting base (6). The upper end of the stator 121 of the stiffness adjustment hollow ring motor (12) is fixed on the stiffness adjustment motor base (13). The stiffness adjustment spiral disk (14) is a hollow disc-shaped structure with external threads machined on its circumference. Its upper end face is fixedly connected to the lower end of the rotor 122 of the stiffness adjustment hollow ring motor (12). The stiffness adjustment spiral tube (15) is fitted on the outside of the stiffness adjustment hollow ring motor (12). The stiffness adjustment spiral disk (14) is screwed into the stiffness adjustment spiral tube (15) and its internal thread is engaged.

[0013] The damper cylinder (2) is placed inside the stiffness adjustment hollow ring motor (12). An induction coil (5) is installed inside the damper cylinder (2). The damper cylinder (2) is installed on the damper mounting base (6) through the damper fixing buckle (7). The electromagnet (4) installed at the upper end of the damper cylinder core (1) is placed inside the cavity of the induction coil (5).

[0014] Preferably, the height adjustment structure includes a height adjustment motor (8), a height adjustment motor base (9), and a height adjustment spiral tube (11); the lower end of the height adjustment motor (8) is fixed on the height adjustment motor base (9), and the height adjustment motor base (9) is connected to the shock absorber mounting base (6); the motor output shaft at the upper end of the height adjustment motor (8) is connected to the center of the height adjustment spiral disc (10); the height adjustment spiral disc (10) is screwed into the height adjustment spiral tube (11) through the external thread and engages with its internal thread; the upper end of the height adjustment spiral tube (11) is fixed to the vehicle body.

[0015] A control method for an electronically controlled three-variable suspension damping system includes: an electromagnet (4) generates a magnetic field; when the damper core (1) drives the electromagnet (4) to move, the induction coil (5) cuts the magnetic field lines and is subjected to electromagnetic force, generating damping; by changing the current passing through the electromagnet (4), the electromagnetic force on the induction coil (5) can be adjusted, thereby realizing the adjustment of damping.

[0016] A control method for an electronically controlled three-variable suspension damping system, wherein a height adjustment motor (8) drives a height adjustment spiral disk (10) to rotate, thereby causing the height adjustment spiral tube (11) to extend and retract, thus achieving height adjustment.

[0017] A control method for an electronically controlled three-variable suspension damping system: a hollow ring motor (12) for stiffness adjustment drives a stiffness adjustment spiral disc (14) to rotate, causing the stiffness adjustment spiral tube (15) to extend and retract; when the stiffness adjustment spiral tube (15) extends and contacts the spring series ring (17), the small stiffness spring (16) cannot be compressed, and only the large stiffness spring (18) works, at which time the damper assembly has a large stiffness; when the stiffness adjustment spiral tube (15) retracts, the small stiffness spring (16) and the large stiffness spring (18) are compressed together, at which time the damper assembly has a small stiffness; thus, the stiffness is adjusted.

[0018] The present invention has the following beneficial effects:

[0019] This invention discloses a compact electronically controlled three-variable suspension damping system and control method, including an electronically controlled magnetic damping damper, on which a height adjustment mechanism and a variable stiffness spring assembly are installed. In the electronically controlled magnetic damping damper, an electromagnet generates a magnetic field. When the damper core drives the electromagnet to move, the induction coil is subjected to electromagnetic force, generating damping. The damping is adjusted by changing the current passing through the electromagnet. In the height adjustment mechanism, a height adjustment motor drives a height adjustment spiral disk to rotate, realizing the extension and retraction of the height adjustment spiral tube, thereby adjusting the height. In the variable stiffness spring assembly, a stiffness adjustment hollow ring motor drives a stiffness adjustment spiral disk to rotate, causing the stiffness adjustment spiral tube to extend and retract. When the stiffness adjustment spiral tube contacts the spring series ring, the small stiffness spring cannot be compressed, and only the large stiffness spring works, at which time the damper assembly has a large stiffness. When the stiffness adjustment spiral tube retracts, both the small and large stiffness springs are compressed, at which time the damper assembly has a small stiffness; thus, the stiffness is adjusted. The beneficial effects of this invention are: by integrating the three functions of damping adjustment, stiffness adjustment and height adjustment into the shock absorber assembly, the structure is simple and the shape is compact, which minimizes the volume of the entire system and is beneficial to the utilization of vehicle interior space and vehicle body styling design. Attached Figure Description

[0020] Figure 1(a) is a front view of the compact electronically controlled three-variable suspension damping system of the present invention;

[0021] Figure 1(b) is a cross-sectional view of the compact electronically controlled three-variable suspension damping system of the present invention;

[0022] Figure 1(c) is a perspective view of the compact electronically controlled three-variable suspension damping system of the present invention.

[0023] Among them, 1-damper cylinder core, 2-damper cylinder body, 3-damper spring seat, 4-electromagnet, 5-induction coil, 6-damper mounting base, 7-damper fixing buckle, 8-height adjustment motor, 9-height adjustment motor seat, 10-height adjustment spiral disc, 11-height adjustment spiral tube, 12-stiffness adjustment hollow ring motor, 121-stiffness adjustment hollow ring motor stator, 122-stiffness adjustment hollow ring motor rotor, 13-stiffness adjustment motor seat, 14-stiffness adjustment spiral disc, 15-stiffness adjustment spiral tube, 16-small stiffness spring, 17-spring series ring, 18-large stiffness spring. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] This invention aims to propose a compact, electronically controlled, three-variable suspension damping system, which has the following characteristics:

[0026] The compact electronically controlled three-variable suspension damping system proposed in this invention consists of an electronically controlled magnetic damping damper, a height adjustment mechanism, and a variable stiffness spring assembly nested together. The damping is determined by the electronically controlled magnetic damping damper, resulting in adjustable damping characteristics. The height is determined by the height adjustment mechanism, resulting in adjustable height characteristics. The stiffness is determined by the variable stiffness spring assembly, resulting in adjustable stiffness characteristics.

[0027] The compact electronically controlled three-variable suspension damping system of the present invention, as shown in Figures 1(a), 1(b), and 1(c), includes a damper mounting base 6, a height adjustment structure, an electronically controlled magnetic damping damper, and a variable stiffness spring assembly. The electronically controlled magnetic damping damper is fixed to the damper mounting base 6 via a damper fixing clip. The height adjustment mechanism and the variable stiffness spring assembly are arranged in series via the damper mounting base 6, and the electronically controlled magnetic damping damper is disposed inside the variable stiffness spring assembly. The upper end of the height adjustment structure is connected to the vehicle body, and the lower end is connected to the upper end of the variable stiffness spring assembly via the damper mounting base 6. The lower end of the variable stiffness spring assembly is connected to the suspension control arm.

[0028] The electrically controlled magnetic damping shock absorber includes a shock absorber cylinder 2, an electromagnet 4, an induction coil 5, and a shock absorber fixing buckle 7.

[0029] The height adjustment structure includes a height adjustment motor 8, a height adjustment motor base 9, and a height adjustment spiral tube 11. The lower end of the height adjustment motor 8 is fixed to the height adjustment motor base 9, which is connected to the shock absorber mounting base 6. The motor output shaft at the upper end of the height adjustment motor 8 is connected to the center of the height adjustment spiral disc 10. The height adjustment spiral disc 10 is screwed into the height adjustment spiral tube 11 through its external thread and engages with its internal thread. The upper end of the height adjustment spiral tube 11 is fixed to the vehicle body.

[0030] The variable stiffness spring assembly includes a damper core 1, a damper spring seat 3, a height adjustment spiral disc 10, a stiffness adjustment hollow ring motor 12, a stiffness adjustment motor seat 13, a stiffness adjustment spiral disc 14, a stiffness adjustment spiral tube 15, a small stiffness spring 16, a spring series ring 17, and a large stiffness spring 18.

[0031] In the electronically controlled magnetic damping shock absorber, an electromagnet 4 is mounted on the upper end of the shock absorber core 1, and the lower end is fixedly connected to the shock absorber spring seat 3. The lower end of the shock absorber spring seat 3 is fixedly connected to the suspension arm of the vehicle. The upper end of the high-stiffness spring 18 is connected to the spring cascade ring 17, and the lower end is connected to the shock absorber spring seat 3.

[0032] The small stiffness spring 16 is fitted onto the outside of the stiffness adjusting spiral tube 15 and the stiffness adjusting hollow ring motor 12. Its lower end is connected to the spring series ring 17, and its upper end is connected to the height adjusting motor base 9 of the height adjusting mechanism. The small stiffness spring 16 and the large stiffness spring 18 are embedded together in the spring series ring 17 to achieve spring series connection.

[0033] The stiffness adjustment motor base 13 is fixed on the damper mounting base 6. The upper end of the stator 121 of the stiffness adjustment hollow ring motor 12 is fixed on the stiffness adjustment motor base 13. The stiffness adjustment spiral disk 14 is a hollow disc-shaped structure with external threads machined on its circumference. Its upper end face is fixedly connected to the lower end of the rotor 122 of the stiffness adjustment hollow ring motor 12. The stiffness adjustment spiral tube 15 is fitted on the outside of the stiffness adjustment hollow ring motor 12. The stiffness adjustment spiral disk 14 is screwed into the stiffness adjustment spiral tube 15 and its internal thread is engaged.

[0034] The damper cylinder body 2 is placed inside the stiffness adjustment hollow ring motor 12. An induction coil 5 is installed inside the damper cylinder body 2. The damper cylinder body 2 is installed on the damper mounting base 6 through the damper fixing buckle 7. The electromagnet 4 installed at the upper end of the damper cylinder core 1 is placed inside the cavity of the induction coil 5.

[0035] The working principle of the shock absorption system of the present invention is as follows:

[0036] When the present invention is used, the electromagnet 4 generates a magnetic field. When the shock absorber core 1 drives the electromagnet 4 to move, the induction coil 5 cuts the magnetic field lines and is subjected to electromagnetic force, generating damping. The electromagnetic force on the induction coil 5 can be adjusted by changing the current passing through the electromagnet 4, thereby realizing the adjustment of damping.

[0037] The height adjustment motor 8 drives the height adjustment spiral disk 10 to rotate, causing the height adjustment spiral tube 11 to extend and retract, thereby achieving height adjustment.

[0038] The hollow ring motor 12 drives the stiffness adjusting spiral disk 14 to rotate, causing the stiffness adjusting spiral tube 15 to extend and retract. When the stiffness adjusting spiral tube 15 extends and contacts the spring series ring 17, the small stiffness spring 16 cannot be compressed, and only the large stiffness spring 18 works. At this time, the stiffness of the damper assembly is relatively large. When the stiffness adjusting spiral tube 15 retracts, the small stiffness spring 16 and the large stiffness spring 18 are compressed together. At this time, the stiffness of the damper assembly is relatively small. Thus, the stiffness is adjusted.

[0039] In summary, the above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An electronically controlled three-variable suspension damping system, characterized in that, It includes a shock absorber mounting base (6), a height adjustment structure, an electronically controlled magnetic damping shock absorber, and a variable stiffness spring assembly; the electronically controlled magnetic damping shock absorber is fixed to the shock absorber mounting base (6) by a shock absorber fixing buckle, the height adjustment mechanism and the variable stiffness spring assembly are arranged in series through the shock absorber mounting base (6), and the electronically controlled magnetic damping shock absorber is set inside the variable stiffness spring assembly; the upper end of the height adjustment structure is connected to the vehicle body, and the lower end is connected to the upper end of the variable stiffness spring assembly through the shock absorber mounting base (6), and the lower end of the variable stiffness spring assembly is connected to the suspension swing arm; Among them, the electronically controlled magnetic damping shock absorber includes a shock absorber cylinder (2), an electromagnet (4), an induction coil (5), and a shock absorber fixing buckle (7). The variable stiffness spring assembly includes a damper core (1), a damper spring seat (3), a height adjustment spiral disc (10), a stiffness adjustment hollow ring motor (12), a stiffness adjustment motor seat (13), a stiffness adjustment spiral disc (14), a stiffness adjustment spiral tube (15), a small stiffness spring (16), a spring series ring (17), and a large stiffness spring (18). In the electronically controlled magnetic damping shock absorber, an electromagnet (4) is installed at the upper end of the shock absorber core (1), and the lower end is fixed to the shock absorber spring seat (3). The lower end of the shock absorber spring seat (3) is fixed to the suspension arm of the vehicle. The upper end of the high stiffness spring (18) is connected to the spring series ring (17), and the lower end is connected to the shock absorber spring seat (3). The small stiffness spring (16) is fitted on the outside of the stiffness adjustment spiral tube (15) and the stiffness adjustment hollow ring motor (12). Its lower end is connected to the spring series ring (17), and its upper end is connected to the height adjustment motor seat (9) of the height adjustment mechanism. The small stiffness spring (16) and the large stiffness spring (18) are embedded together in the spring series ring (17) to realize the spring series connection. The stiffness adjustment motor base (13) is fixed on the damper mounting base (6). The upper end of the stator (121) of the stiffness adjustment hollow ring motor (12) is fixed on the stiffness adjustment motor base (13). The stiffness adjustment spiral disk (14) is a hollow disc-shaped structure with external threads machined on its circumference. Its upper end face is fixedly connected to the lower end of the rotor (122) of the stiffness adjustment hollow ring motor (12). The stiffness adjustment spiral tube (15) is fitted on the outside of the stiffness adjustment hollow ring motor (12). The stiffness adjustment spiral disk (14) is screwed into the stiffness adjustment spiral tube (15) and its internal thread is engaged. The damper cylinder (2) is placed inside the stiffness adjustment hollow ring motor (12). An induction coil (5) is installed inside the damper cylinder (2). The damper cylinder (2) is installed on the damper mounting base (6) through the damper fixing buckle (7). The electromagnet (4) installed at the upper end of the damper cylinder core (1) is placed inside the cavity of the induction coil (5). The height adjustment structure includes a height adjustment motor (8), a height adjustment motor base (9), and a height adjustment spiral tube (11); the lower end of the height adjustment motor (8) is fixed on the height adjustment motor base (9), and the height adjustment motor base (9) is connected to the shock absorber mounting base (6); the motor output shaft at the upper end of the height adjustment motor (8) is connected to the center of the height adjustment spiral disc (10); the height adjustment spiral disc (10) is screwed into the height adjustment spiral tube (11) through the external thread and engages with its internal thread; the upper end of the height adjustment spiral tube (11) is fixed to the vehicle body.

2. A control method for the electronically controlled three-variable suspension damping system as described in claim 1, characterized in that, include: The electromagnet (4) generates a magnetic field. When the shock absorber core (1) drives the electromagnet (4) to move, the induction coil (5) cuts the magnetic field lines and is subjected to electromagnetic force, generating damping. The electromagnetic force on the induction coil (5) can be adjusted by changing the current passing through the electromagnet (4), thereby realizing the adjustment of damping.

3. A control method for the electronically controlled three-variable suspension damping system as described in claim 1, characterized in that, The height adjustment motor (8) drives the height adjustment spiral disk (10) to rotate, causing the height adjustment spiral tube (11) to extend and retract, thereby achieving height adjustment.

4. A control method for the electronically controlled three-variable suspension damping system as described in claim 1, characterized in that, The stiffness adjustment hollow ring motor (12) drives the stiffness adjustment spiral disk (14) to rotate, causing the stiffness adjustment spiral tube (15) to extend and retract. When the stiffness adjustment spiral tube (15) extends and contacts the spring series ring (17), the small stiffness spring (16) cannot be compressed, and only the large stiffness spring (18) works. At this time, the stiffness of the damper assembly is relatively large. When the stiffness adjustment spiral tube (15) retracts, the small stiffness spring (16) and the large stiffness spring (18) are compressed together. At this time, the stiffness of the damper assembly is relatively small. Thus, the stiffness adjustment is achieved.

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