Suspension system capable of adjusting height of vehicle body

Abstract

The suspension system comprises a twisted tooth motor assembly, a linear motor assembly and a damper assembly, a linear motor stator is connected to the outer side face of a damper outer cylinder in a sleeving mode, and the inner side face of a twisted tooth meshing ring body is in threaded connection with the outer side face of the damper outer cylinder; an upper plane bearing gasket is arranged at the bottom end of the linear motor rotor, a lower plane bearing gasket is arranged at the top end of the twisted tooth meshing ring body, and a spring is arranged between the upper plane bearing gasket and the lower plane bearing gasket. According to the suspension system, the twisted tooth motor assembly controllably moves on the damper assembly, the height of a vehicle body is successfully, rapidly and stably adjusted, meanwhile, the linear motor assembly capable of being closed in good time is further utilized, energy consumption is greatly reduced, the damper assembly is located at the center axis of the twisted tooth motor assembly and the linear motor assembly, the structure is compact, and cost is low. The device is small in size and suitable for popularization.

Description

Technical Field

[0001] The invention relates to the technical field of automobile suspension, in particular to a suspension system with adjustable vehicle body height. Background Art

[0002] As people's demands for vehicle passability and ride comfort become higher and higher, and because vehicle suspension is directly related to vehicle passability and ride comfort, major manufacturers continue to develop vehicle suspension.

[0003] At present, common vehicle suspensions on the market, including traditional passive suspensions and semi-active suspensions, do not have the function of adjusting the height of the vehicle body. They cannot increase the height of the vehicle body on some rugged roads to improve the vehicle's passability, nor can they lower the body on flat roads to reduce wind resistance. At the same time, traditional linear motor active suspensions need to continuously provide force to lift the body to improve passability, which will lead to increased power consumption of the vehicle, increased energy consumption and thus reduced cruising range. Finally, traditional air springs can also realize the function of adjusting the height of the vehicle body, but the structure of traditional air springs occupies a large space, which is not conducive to their installation and promotion.

[0004] Therefore, a suspension system with adjustable vehicle height is proposed, which can take into account both vehicle passability and ride comfort while occupying a smaller space. Summary of the invention

[0005] The object of the present invention is to provide a suspension system with adjustable vehicle body height to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a suspension system with adjustable vehicle height, comprising a coilover motor assembly, a linear motor assembly and a damper assembly, wherein the linear motor assembly comprises a linear motor upper end cover, a linear motor mover and a linear motor stator, the damper assembly comprises a damper outer cylinder, a piston rod and a piston assembly, the linear motor stator is sleeved on the outer surface of the damper outer cylinder, the coilover motor assembly comprises a coilover motor outer cylinder and a coilover meshing ring body, the inner side surface of the coilover meshing ring body and the outer side surface of the damper outer cylinder are threadedly connected, and the coilover motor outer cylinder can only move up and down along the damper outer cylinder;

[0007] An upper plane bearing washer is arranged at the bottom end of the linear motor mover, a lower plane bearing washer is arranged at the top end of the threaded engagement ring body, a spring is arranged between the lower plane bearing washer and the upper plane bearing washer, and the piston rod is fixedly connected to the upper end cover of the linear motor.

[0008] Preferably: the piston rod is arranged at the top of the piston assembly, the linear motor upper end cover is arranged at the top of the linear motor mover, the top of the linear motor upper end cover is fixedly connected to the linear motor upper end cover connecting piece, and the top of the linear motor upper end cover connecting piece is fixedly connected to the upper lifting ear.

[0009] Preferably, the bottom end of the damper outer cylinder is fixedly connected to a damper bottom end cover, and the bottom end of the damper bottom end cover is fixedly connected to a lower lifting ear.

[0010] Preferably, the linear motor mover slides up and down on the outer side of the linear motor stator, and the piston assembly is located inside the damper outer cylinder and slides up and down.

[0011] Preferably: the threaded motor assembly also includes a first ball bearing, a threaded motor inner cylinder, a magnet, a coil, a planetary gear support bearing, a sun gear tooth, a planetary gear, a second ball bearing, a limit cam and an internal thread, and a vertical groove is provided on the outer side of the damper outer cylinder near the threaded motor assembly.

[0012] Preferably, the internal thread is arranged on the inner side surface of the thread engagement ring body, and the limiting protrusion is arranged on the inner side surface of the bottom opening of the thread motor outer cylinder.

[0013] Preferably, the limiting cam is located in the vertical groove, the first ball bearing is arranged on the inner bottom surface of the outer cylinder of the thread motor, and the inner cylinder of the thread motor is arranged on the central axis of the outer cylinder of the thread motor.

[0014] Preferably, the coil is arranged at the lower part of the inner side wall of the outer cylinder of the threaded motor, the sun gear is arranged at the upper part of the inner side wall of the outer cylinder of the threaded motor, and the second ball bearing is arranged between the threaded engagement ring body and the inner cylinder of the threaded motor.

[0015] Preferably, the magnetic steel is sleeved on the lower part of the outer side wall of the inner cylinder of the thread-changing motor, the planetary gear support bearing is arranged on the inner side wall of the outer cylinder of the thread-changing motor, and a plurality of planetary gears are arranged.

[0016] Preferably: the sun gear teeth are arranged on the outer side wall of the inner cylinder of the threaded motor at the planetary gear and the inner side wall of the outer cylinder of the threaded motor at the planetary gear, the planetary gears and the sun gear teeth are meshed, the planetary gears are rotatably connected to the side end of the planetary gear support bearing away from the outer cylinder of the threaded motor, and a buffer block is arranged on the top of the stator of the linear motor.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This suspension system, through the arrangement and cooperation of a coilover motor assembly, a linear motor assembly, a damper assembly and a spring, utilizes the controllable up and down movement of the coilover motor assembly on the damper assembly to successfully achieve rapid and stable adjustment of the vehicle body height.

[0019] 2. This suspension system also utilizes the ability to shut down the linear motor assembly at the right time, greatly reducing energy consumption. The damper assembly is located at the center axis of the coilover motor assembly and the linear motor assembly. It has a compact structure and a small size, which greatly improves the universality of this suspension system and is suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0021] Figure 1 A cross-sectional view of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the twisting motor in the present invention;

[0023] Figure 3 It is a cross-sectional view of the thread-cutting motor of the present invention;

[0024] Figure 4 It is a schematic diagram of the internal structure of the thread-cutting motor in the present invention.

[0025] In the figure: 1. outer cylinder of the threaded motor; 101. first ball bearing; 102. inner cylinder of the threaded motor; 103. magnet; 104. coil; 105. planetary gear support bearing; 106. sun gear; 107. planetary gear; 108. second ball bearing; 109. threaded engagement ring; 110. limit cam; 111. internal thread; 2. upper lifting ear; 201. lower lifting ear; 3. upper end cover of the linear motor; 301. upper end cover connector of the linear motor; 302. mover of the linear motor; 303. stator of the linear motor; 4. outer cylinder of the damper; 401. piston rod; 402. piston assembly; 403. bottom end cover of the damper; 404. buffer block; 405. vertical groove; 5. spring; 6. lower plane bearing gasket; 601. upper plane bearing gasket. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] Reference Figure 1-4 As shown, the present invention provides a technical solution of a suspension system with adjustable vehicle height:

[0030] A suspension system with adjustable vehicle height, a suspension system with adjustable vehicle height, including a coilover motor assembly, a linear motor assembly and a damper assembly, the linear motor assembly including a linear motor upper end cover 3, a linear motor mover 302 and a linear motor stator 303, wherein it should be supplemented that the linear motor mover 302 is a movable structure in the linear motor assembly, and the linear motor stator 303 is an immovable structure in the linear motor assembly, and the specific structure of the linear motor mover 302 and the linear motor stator 303 is the prior art, and no further explanation is given here. In detail, the damper assembly includes a damper outer cylinder 4, a piston rod 401 and a piston assembly 402, wherein it should be additionally explained that the piston assembly 402 is a prior art and is used to adjust the damping force provided by the damper assembly, which will not be elaborated on herein. The linear motor stator 303 is sleeved on the outer surface of the damper outer cylinder 4, and the threaded motor assembly includes a threaded motor outer cylinder 1 and a threaded meshing ring body 109. The inner side surface of the threaded meshing ring body 109 is threadedly connected to the outer side surface of the damper outer cylinder 4, and the threaded motor outer cylinder 1 can only move up and down along the damper outer cylinder 4.

[0031] Among them, it needs to be supplemented that the rotation of the threaded engagement ring body 109 in the threaded motor assembly is controlled by the rotation of the threaded engagement ring body 109 because it is threadedly connected to the outer side surface of the damper outer cylinder 4 and because the threaded motor outer cylinder 1 can only move up and down along the damper outer cylinder 4, the up and down movement of the threaded motor assembly can be controlled by the rotation of the threaded engagement ring body 109.

[0032] Further, see Figure 1 As shown, an upper plane bearing washer 601 is provided at the bottom end of the linear motor mover 302, a lower plane bearing washer 6 is provided at the top end of the threaded meshing ring body 109, a spring 5 is provided between the lower plane bearing washer 6 and the upper plane bearing washer 601, and the piston rod 401 is fixedly connected to the upper end cover 3 of the linear motor. It should be noted that the setting of the upper plane bearing washer 601 and the lower plane bearing washer 6 is used to reduce the wear of the two ends of the spring 5 on the bottom end of the linear motor mover 302 and the top end of the threaded meshing ring body 109, and at the same time reduce the torque of the threaded motor assembly to reduce its power, thereby achieving the purpose of reducing energy consumption.

[0033] Further, see Figure 1 As shown, the piston rod 401 is arranged at the top of the piston assembly 402, the linear motor upper end cover 3 is arranged at the top of the linear motor mover 302, the top of the linear motor upper end cover 3 is fixedly connected to the linear motor upper end cover connecting piece 301, the top of the linear motor upper end cover connecting piece 301 is fixedly connected to the upper lifting ear 2 for connecting to the vehicle body, the bottom end of the damper outer tube 4 is fixedly connected to the damper bottom end cover 403, and the bottom end of the damper bottom end cover 403 is fixedly connected to the lower lifting ear 201, which is also used to connect to the vehicle body.

[0034] It should be noted that the linear motor mover 302 slides up and down on the outer side of the linear motor stator 303, and the piston assembly 402 slides up and down inside the damper outer tube 4. This is the prior art and will not be elaborated on here.

[0035] Furthermore, the threaded motor assembly also includes a first ball bearing 101, a threaded motor inner cylinder 102, a magnet 103, a coil 104, a planetary gear support bearing 105, a sun gear tooth 106, a planetary gear 107, a second ball bearing 108, a limit cam 110 and an internal thread 111, and a vertical groove 405 is provided on the outer side of the damper outer cylinder 4 near the threaded motor assembly.

[0036] The specific connection method of the internal structure of the threaded motor assembly is as follows: Figure 2-4As shown, the internal thread 111 is arranged on the inner side surface of the thread engagement ring body 109, the limiting convex fast 110 is arranged on the inner side surface of the bottom surface opening of the thread motor outer cylinder 1, and the limiting convex fast 110 is located in the vertical groove 405. Through such an arrangement, the thread motor outer cylinder 1 can only move up and down along the damper outer cylinder 4, and the first ball bearing 101 is arranged on the inner bottom surface of the thread motor outer cylinder 1. It should be supplemented that the first ball bearing 101 is used to maintain the position and posture of the thread motor inner cylinder 102, and at the same time reduce the resistance of the thread motor inner cylinder 102 when it rotates. Figure 4 As shown, the inner cylinder 102 of the threaded motor is arranged on the central axis of the outer cylinder 1 of the threaded motor, the coil 104 is arranged on the lower part of the inner wall of the outer cylinder 1 of the threaded motor, the sun gear 106 is arranged on the upper part of the inner wall of the outer cylinder 1 of the threaded motor, the second ball bearing 108 is arranged between the threaded engagement ring 109 and the inner cylinder 102 of the threaded motor, and its function is the same as that of the first ball bearing 101, the magnetic steel 103 is sleeved on the lower part of the outer wall of the inner cylinder 102 of the threaded motor, the planetary gear support bearing 105 is arranged on the inner wall of the outer cylinder 1 of the threaded motor, and the planetary gear 107 is provided with Several, the sun gear teeth 106 are arranged on the outer wall of the inner cylinder 102 of the threaded motor at the planetary gear 107 and the inner wall of the outer cylinder 1 of the threaded motor is located at the planetary gear 107, the planetary gear 107 and the sun gear teeth 106 are meshed, and the planetary gear 107 is rotatably connected to the planetary gear support bearing 105 away from the side end of the threaded motor outer cylinder 1, wherein it is also necessary to supplement that the planetary gear 107 is rotatably connected to a rotating shaft, and the two ends of the rotating shaft are respectively fixedly connected to the planetary gear support bearing 105 and the threaded gear meshing ring body 109, refer to Figure 1 As shown, a buffer block 404 is arranged on the top of the linear motor stator 303. The material of the buffer block 404 can be rubber, which is used to reduce the collision and wear between the internal structures of the device when it is running.

[0037] The device arranges the outer cylinder 1 of the threaded motor, the inner cylinder 102 of the threaded motor and the planetary gear 107, etc., and utilizes the arrangement of the inner cylinder 102 of the threaded motor inside the threaded motor assembly, so as to facilitate the assembly of the threaded motor assembly and the damper assembly. At the same time, the planetary gear 107 cooperates with the sun gear 106 arranged on the inner cylinder 102 of the threaded motor and the outer cylinder 1 of the threaded motor to reduce the rotation speed of the inner cylinder 102 of the threaded motor and drive the threaded meshing ring 109 to rotate, thereby meeting the adaptation of the threaded motor assembly to the present device, and the structural design is compact and occupies little space.

[0038] The working principle of the suspension system is now explained through its working process: when the suspension system is working, when the vehicle body needs to be raised in height, the linear motor assembly is started first, and the linear motor mover 302 moves upward along the linear motor stator 303. At this time, the damping force provided by the damper assembly is adjusted to the minimum, thereby reducing the resistance of the linear motor mover 302 when moving upward. When the vehicle body is raised to a predetermined height, the coil motor assembly is started, and the coil 104 generates a rotating magnetic field after being energized, so that the coil motor inner cylinder 102 provided with the magnetic steel 103 starts to rotate, and the planetary gear 107 is meshed with the sun gear teeth 106 provided on the coil motor inner cylinder 102 and the coil motor outer cylinder 1, so that the planetary gear 107 rotates while driving the coil motor meshing ring body 109 to rotate, so that the rotation speed of the coil motor inner cylinder 102 is transmitted to the coil motor meshing ring body after being decelerated. 109, and because the threaded engagement ring body 109 and the damper outer tube 4 are threadedly connected, and the limiting cam 110 is located in the vertical groove 405, the outer tube 1 of the coil motor moves upward. When the coil motor assembly moves upward to the set position, it should be supplemented that the set position is to ensure that the coil motor assembly that continues to remain stationary when the linear motor assembly stops working should be in the position. At this time, the main power of the linear motor assembly is gradually reduced, and the damping coefficient of the damper assembly is gradually increased to increase the damping force that it can provide in the opposite direction of the gravity of the vehicle body, so as to avoid the vehicle body from shaking due to the decrease in the main power of the linear motor assembly and improve the riding comfort. When the output of the linear motor assembly drops to zero, the linear motor assembly stops working, which greatly reduces the energy consumption of the suspension system when increasing the vehicle body height to improve the vehicle body passability, and is suitable for promotion and application.

[0039] When the height of the vehicle body needs to be lowered, it is only necessary to start the coilover motor assembly to make it move downward along the damper outer tube 4. At the same time, the damping coefficient of the damper assembly is gradually reduced to reduce the damping force it provides in the opposite direction of the gravity of the vehicle body, thereby avoiding the vehicle body from shaking due to the loss of support from the coilover motor assembly, thereby improving riding comfort. When the coilover motor assembly moves to the set position, the height of the vehicle body is also lowered. During this process, the linear motor mover 302 slides downward along the linear motor stator 303 under the action of the gravity of the vehicle body.

[0040] In summary, the suspension system utilizes the controllable up and down movement of the coilover motor assembly through the setting and joint cooperation of the coilover motor assembly, the linear motor assembly, the damper assembly and the spring 5, and successfully realizes the increase of the vehicle body height on bumpy roads to improve the vehicle's passability, and the lowering of the vehicle body height on flat roads to reduce wind resistance. The process of adjusting the vehicle body height is fast and stable. At the same time, since the linear motor assembly does not need to work continuously, the energy consumption is greatly reduced. The damper assembly is located at the center axis of the coilover motor assembly and the linear motor assembly. The structure is compact and the size is small, which greatly improves the universality of the suspension system and is suitable for promotion and application.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A suspension system with adjustable vehicle height, characterized in that: The invention comprises a threaded motor assembly, a linear motor assembly and a damper assembly, wherein the linear motor assembly comprises a linear motor upper end cover (3), a linear motor mover (302) and a linear motor stator (303), the damper assembly comprises a damper outer cylinder (4), a piston rod (401) and a piston assembly (402), the linear motor stator (303) is sleeved on the outer side surface of the damper outer cylinder (4), the threaded motor assembly comprises a threaded motor outer cylinder (1) and a threaded meshing ring body (109), the inner side surface of the threaded meshing ring body (109) and the outer side surface of the damper outer cylinder (4) are threadedly connected, and the threaded motor outer cylinder (1) can only move up and down along the damper outer cylinder (4); An upper plane bearing washer (601) is arranged at the bottom end of the linear motor mover (302), a lower plane bearing washer (6) is arranged at the top end of the threaded engagement ring (109), a spring (5) is arranged between the lower plane bearing washer (6) and the upper plane bearing washer (601), and the piston rod (401) is fixedly connected to the upper end cover (3) of the linear motor.

2. The suspension system with adjustable vehicle height according to claim 1, characterized in that: The piston rod (401) is arranged at the top end of the piston assembly (402), the linear motor upper end cover (3) is arranged at the top end of the linear motor mover (302), the top end of the linear motor upper end cover (3) is fixedly connected to the linear motor upper end cover connecting piece (301), and the top end of the linear motor upper end cover connecting piece (301) is fixedly connected to the upper lifting ear (2).

3. The suspension system with adjustable vehicle height according to claim 2, characterized in that: The bottom end of the damper outer cylinder (4) is fixedly connected to a damper bottom end cover (403), and the bottom end of the damper bottom end cover (403) is fixedly connected to a lower lifting ear (201).

4. The suspension system with adjustable vehicle height according to claim 3, characterized in that: The linear motor mover (302) slides up and down on the outer side surface of the linear motor stator (303), and the piston assembly (402) is located inside the damper outer cylinder (4) and slides up and down.

5. The suspension system with adjustable vehicle height according to claim 4, characterized in that: The threaded motor assembly further comprises a first ball bearing (101), a threaded motor inner cylinder (102), a magnetic steel (103), a coil (104), a planetary gear support bearing (105), sun gear teeth (106), a planetary gear (107), a second ball bearing (108), a limit cam (110) and an internal thread (111); and a vertical groove (405) is provided on the outer side surface of the damper outer cylinder (4) near the threaded motor assembly.

6. The suspension system with adjustable vehicle height according to claim 5, characterized in that: The internal thread (111) is arranged on the inner side surface of the thread engagement ring body (109), and the limiting cam (110) is arranged on the inner side surface of the bottom opening of the thread motor outer cylinder (1).

7. The suspension system with adjustable vehicle height according to claim 6, characterized in that: The limiting cam (110) is located in the vertical groove (405), the first ball bearing (101) is arranged on the inner bottom surface of the outer cylinder (1) of the threaded motor, and the inner cylinder (102) of the threaded motor is arranged on the central axis of the outer cylinder (1) of the threaded motor.

8. The suspension system with adjustable vehicle height according to claim 7, characterized in that: The coil (104) is arranged on the lower part of the inner wall of the outer cylinder (1) of the twisted tooth motor, the sun gear (106) is arranged on the upper part of the inner wall of the outer cylinder (1) of the twisted tooth motor, and the second ball bearing (108) is arranged between the twisted tooth meshing ring body (109) and the inner cylinder (102) of the twisted tooth motor.

9. The suspension system with adjustable vehicle height according to claim 8, characterized in that: The magnetic steel (103) is sleeved on the lower part of the outer wall of the inner cylinder (102) of the threaded motor, the planetary gear support bearing (105) is arranged on the inner wall of the outer cylinder (1) of the threaded motor, and a plurality of planetary gears (107) are arranged.

10. The suspension system with adjustable vehicle height according to claim 9, characterized in that: The sun gear teeth (106) are arranged on the outer wall of the inner cylinder (102) of the threaded motor and located at the planetary gear (107), and the inner wall of the outer cylinder (1) of the threaded motor is located at the planetary gear (107), the planetary gear (107) and the sun gear teeth (106) are meshed, and the planetary gear (107) is rotatably connected to the end of the planetary gear support bearing (105) away from the outer cylinder (1) of the threaded motor, and a buffer block (404) is arranged on the top of the stator (303) of the linear motor.

Images