Electric vehicle suspension system height adjustment device

Abstract

This application discloses a height adjustment device for an electric vehicle suspension system, relating to the field of automotive suspension. It includes a connecting collar, a lower fork arm rotatably connected to the connecting collar, an upper fork arm rotatably connected to the connecting collar, a first suspension rod rotatably connected to the lower fork arm, a second suspension rod slidably connected to the first suspension rod, a support spring sleeved between the first and second suspension rods, one end of the support spring being fixedly connected to the second suspension rod, a height adjustment mechanism between the support spring and the first suspension rod, and an auxiliary fixing mechanism on one side of the first suspension rod. By using the height adjustment mechanism to move the support spring on the first suspension rod, the support spring moves the second suspension rod, thereby easily changing the position of the support point of the support spring on the first suspension rod, thus changing the initial support height between the first and second suspension rods and reducing the inconvenience of manual adjustment during setup.

Description

Technical Field

[0001] This application relates to the field of automotive suspension, and in particular to height adjustment devices for electric vehicle suspension systems. Background Technology

[0002] The suspension system of an electric vehicle is a core component of the vehicle chassis, primarily responsible for bearing the weight of the vehicle body, cushioning road impacts, and maintaining tire contact with the ground. Compared to traditional gasoline-powered vehicles, the additional weight distribution and shift in the center of gravity caused by the battery pack place higher demands on the adjustability and adaptability of the suspension system in electric vehicles.

[0003] Existing suspension systems typically employ a double wishbone structure, consisting of a connecting collar, upper / lower wishbone arms, and a linkage suspension rod. Their height adjustment function generally relies on the mechanical displacement of the spring support point. The specific structure includes a support spring sleeved on the sliding suspension rod, with the bottom end of the spring fixed to a movable adjusting ring. This adjusting ring is connected to the suspension rod via a threaded pair, forming a basic height adjustment mechanism.

[0004] The adjustment process requires manual rotation of the adjustment ring, which necessitates lifting the vehicle body and disassembling parts, resulting in low efficiency. Furthermore, the accuracy of manual rotation is affected by the operator's strength, which can easily lead to mismatch in the height of the four wheels. Utility Model Content

[0005] The purpose of this application is to solve the problems mentioned in the background art, which require manual rotation of the adjustment ring during the adjustment process, which necessitates lifting the vehicle body and disassembling components, resulting in low efficiency. Furthermore, the accuracy of manual rotation is affected by the operator's force, which can easily lead to mismatch in the height of the four wheels. This application provides a height adjustment device for the suspension system of an electric vehicle.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution:

[0007] An electric vehicle suspension system height adjustment device includes a connecting collar, a lower fork arm rotatably connected to the connecting collar, an upper fork arm rotatably connected to the connecting collar, a first suspension rod rotatably connected to the lower fork arm, a second suspension rod slidably connected to the first suspension rod, an end of the second suspension rod away from the first suspension rod rotatably connected to the upper fork arm, a support spring sleeved between the first and second suspension rods, one end of the support spring being fixedly connected to the second suspension rod, a height adjustment mechanism being provided between the support spring and the first suspension rod, and an auxiliary fixing mechanism being provided on one side of the first suspension rod.

[0008] By adopting the above technical solution, the height adjustment mechanism drives the support spring on suspension rod one to move, which in turn drives suspension rod two to move. This allows for easy changes in the position of the support point of the support spring on suspension rod one, thus altering the initial support height between suspension rod one and suspension rod two. This reduces the inconvenience of manual adjustment and improves the accuracy of the adjustment.

[0009] Furthermore, the height adjustment mechanism includes a support seat 1 fixed to one end of the suspension rod 1 away from the suspension rod 2, a support seat 2 fixed to one end of the suspension rod 2 away from the suspension rod 1, an adjusting ring slidably sleeved on the suspension rod 1, the adjusting ring being fixedly connected to a support spring, a moving component being provided between the support seat 1 and the adjusting ring, and a driving component being provided on the support seat 1.

[0010] By adopting the above technical solution, the driving component drives the moving component, which in turn drives the adjusting ring, thereby changing the position of the support spring. This allows for convenient adjustment of the initial support height between suspension rod one and suspension rod two, reducing the inconvenience of manual adjustment during the adjustment process.

[0011] Furthermore, the movable component includes an adjusting threaded rod rotatably connected to a support base, a threaded block being threadedly connected to the adjusting threaded rod, and the threaded block being fixedly connected to an adjusting ring.

[0012] By adopting the above technical solution, the adjusting threaded rod rotates on the support seat, and the threaded block moves on the adjusting threaded rod, thereby driving the adjusting ring, which makes it easy for the adjusting ring to move on the suspension rod.

[0013] Furthermore, a sliding rod is rotatably connected to the second support base, and the end of the sliding rod away from the second support base is slidably connected to the adjusting threaded rod.

[0014] By adopting the above technical solution, the sliding rod on the second support base supports the adjusting threaded rod, and the sliding rod slides on the adjusting threaded rod, thereby further limiting the adjusting threaded rod without hindering the movement of the first and second suspension rods.

[0015] Furthermore, the drive assembly includes a support frame fixed on a support base, a drive motor fixed on the support frame, a gear one fixed at the output end of the drive motor, a gear two meshing with the gear one, and the gear two fixedly connected to an adjusting threaded rod.

[0016] By adopting the above technical solution, the drive motor drives gear one, and gear one drives gear two to rotate, thereby making it easy for the adjusting threaded rod to rotate on the support seat one.

[0017] Furthermore, the auxiliary fixing mechanism includes a fixing seat fixed on a suspension rod, a fixing rod fixed on the fixing seat, a fixing block slidably connected to the fixing rod, the fixing block being fixedly connected to an adjusting ring, a plug-in rod slidably connected to the fixing block, a plurality of plug-in holes distributed along a straight line being provided on the fixing rod, and a plug-in assembly being provided on the fixing block.

[0018] By adopting the above technical solution, during the movement of the adjusting ring, the adjusting ring drives the fixed block, causing the fixed block to move on the fixed rod. Then, the plug-in assembly drives the plug-in rod, allowing the plug-in rod to insert into the fixed block and the fixed rod, thereby further supporting and fixing the adjusting ring and improving the stability of the adjusting ring on the suspension rod.

[0019] Furthermore, the plug-in assembly includes a connecting frame fixed on a fixing block, an electric telescopic rod fixed on the connecting frame, a connecting block fixed to the telescopic end of the electric telescopic rod, and the connecting block being fixedly connected to the plug-in rod.

[0020] By adopting the above technical solution, the electric telescopic rod drives the connecting block, which in turn drives the plug-in rod, making it easy to insert and remove the plug-in rod from the plug-in hole.

[0021] Furthermore, an auxiliary spring is provided between the plug-in rod and the fixing block, and both ends of the auxiliary spring are fixedly connected to the fixing block and the plug-in rod.

[0022] By adopting the above technical solution, and using an auxiliary spring to connect the plug rod and the fixing block, the stability of the plug rod being inserted into the plug hole can be further improved.

[0023] In summary, this application includes at least one of the following beneficial effects;

[0024] 1. This application utilizes the electric vehicle control center to control the drive motor during electric vehicle suspension height adjustment. The drive motor drives gear one to rotate, gear one drives gear two to rotate, and gear two drives the adjusting threaded rod to rotate. As the adjusting threaded rod rotates, the threaded block moves along the adjusting threaded rod under the constraint of the adjusting ring. During the movement of the threaded block, the adjusting ring drives the adjusting ring, which supports the support spring. As the adjusting ring moves, the support point of the support spring on suspension rod one changes. Under the support of the support spring, the initial height of suspension rod two on suspension rod one changes. Under the push of suspension rod one and suspension rod two, the angle of the upper and lower forks changes, thus completing the adjustment of the electric vehicle suspension height. This achieves the purpose of conveniently adjusting the initial support height between suspension rod one and suspension rod two, reducing the trouble of manual adjustment during adjustment, and improving the adjustment accuracy.

[0025] 2. In this application, when the adjusting ring moves, an electric telescopic rod drives a connecting block, which in turn drives a plug-in rod. The plug-in rod moves on a fixed block, moving away from the plug-in hole on the fixed rod. When the adjusting ring moves, the electric vehicle control center uses the drive motor to adjust the plug-in rod so that it is aligned with the plug-in hole on the fixed rod. The electric telescopic rod drives the connecting block, which in turn drives the plug-in rod. The plug-in rod inserts into the corresponding plug-in hole, restricting the fixed block and fixing it to the fixed rod. This further supports the adjusting ring, improving its stability on the suspension rod. Attached Figure Description

[0026] Figure 1 This is a first three-dimensional structural schematic diagram of the height adjustment device for the electric vehicle suspension system in this application;

[0027] Figure 2 This is a second three-dimensional structural schematic diagram of the height adjustment device for the electric vehicle suspension system in this application;

[0028] Figure 3 This is a three-dimensional structural diagram of the height adjustment mechanism in this application;

[0029] Figure 4 This application Figure 2 Enlarged diagram of point A in the middle.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Connecting collar; 2. Upper fork arm; 3. Lower fork arm; 4. Suspension rod one; 5. Suspension rod two; 6. Support spring; 7. Height adjustment mechanism; 71. Support seat one; 72. Support seat two; 73. Adjusting ring; 74. Moving assembly; 741. Adjusting threaded rod; 742. Threaded block; 743. Sliding rod; 75. Drive assembly; 751. Support frame; 752. Drive motor; 753. Gear one; 754. Gear two; 8. Auxiliary fixing mechanism; 81. Fixing rod; 82. Fixing block; 83. Plug-in rod; 84. Plug-in hole; 85. Plug-in assembly; 851. Electric telescopic rod; 852. Connecting frame; 853. Connecting block; 854. Auxiliary spring; 86. Fixing seat. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] This application discloses a height adjustment device for an electric vehicle suspension system.

[0034] Reference Figure 1 , Figure 2 and Figure 3 An electric vehicle suspension system height adjustment device includes a connecting collar 1, a lower fork arm 3 rotatably connected to the connecting collar 1, an upper fork arm 2 rotatably connected to the connecting collar 1, a suspension rod 4 rotatably connected to the lower fork arm 3, a suspension rod 5 slidably connected to the suspension rod 4, the end of the suspension rod 5 away from the suspension rod 4 being rotatably connected to the upper fork arm 2, a support spring 6 being sleeved between the suspension rod 4 and the suspension rod 5, one end of the support spring 6 being fixedly connected to the suspension rod 5, a height adjustment mechanism 7 being provided between the support spring 6 and the suspension rod 4, and an auxiliary fixing mechanism 8 being provided on one side of the suspension rod 4.

[0035] When adjusting the height of the electric vehicle's suspension system, the height adjustment mechanism 7 is connected to the electric vehicle's control center. The control center uses the height adjustment mechanism 7 to drive the support spring 6 on suspension rod 1 4, changing the initial support height of the support spring 6 on suspension rod 1 4. The support spring 6 drives suspension rod 2 5, causing suspension rod 2 5 to push the upper fork 2, changing the angle between the upper fork 2 and the lower fork 3. This adjusts the height of the connecting collar 1 supported by the upper fork 2 and the lower fork 3. Then, the auxiliary fixing mechanism 8 further fixes the height adjustment mechanism 7, ensuring stable support of the support spring 6. By using the height adjustment mechanism 7 to move the support spring 6 on suspension rod 1 4, the support spring 6 drives suspension rod 2 5, thus easily changing the position of the support point of the support spring 6 on suspension rod 1 4, changing the initial support height between suspension rod 1 4 and suspension rod 2 5. This reduces the inconvenience of manual adjustment and improves the accuracy of the adjustment.

[0036] Reference Figure 1 , Figure 2 and Figure 3 The height adjustment mechanism 7 includes a support base 71 fixed to one end of the suspension rod 4 away from the suspension rod 5, a support base 72 fixed to one end of the suspension rod 5 away from the suspension rod 4, an adjustment ring 73 slidably sleeved on the suspension rod 4, the adjustment ring 73 being fixedly connected to the support spring 6, a moving component 74 being provided between the support base 71 and the adjustment ring 73, and a drive component 75 being provided on the support base 71.

[0037] In addition, the movable component 74 includes an adjusting threaded rod 741 rotatably connected to the support base 71, and a threaded block 742 is threadedly connected to the adjusting threaded rod 741. The threaded block 742 is fixedly connected to the adjusting ring 73.

[0038] Furthermore, a sliding rod 743 is rotatably connected to the support base 72, and the end of the sliding rod 743 away from the support base 72 is slidably connected to the adjusting threaded rod 741.

[0039] Furthermore, the drive assembly 75 includes a support frame 751 fixed on the support base 71, a drive motor 752 fixed on the support frame 751, a gear 753 fixed at the output end of the drive motor 752, a gear 754 meshing with the gear 753, and the gear 754 fixedly connected to the adjusting threaded rod 741.

[0040] When adjusting the suspension height of an electric vehicle, the drive motor 752 is controlled by the electric vehicle control center. The drive motor 752 drives gear 753 to rotate, which in turn drives gear 754 to rotate. Gear 754 then drives the adjusting threaded rod 741 to rotate. As the adjusting threaded rod 741 rotates, the threaded block 742 moves along it under the constraint of the adjusting ring 73. During this movement, the threaded block 742 drives the adjusting ring 73, which supports the support spring 6. As the adjusting ring 73 moves, the support point of the support spring 6 on the suspension rod 4 moves accordingly. The suspension height of the second suspension rod 5 changes under the support of the support spring 6. Under the push of the first suspension rod 4 and the second suspension rod 5, the angle of the upper fork arm 2 and the lower fork arm 3 changes, thus completing the adjustment of the suspension height of the electric vehicle. By moving the threaded block 742 on the adjusting threaded rod 741, the threaded block 742 drives the adjusting ring 73, which moves on the first suspension rod 4, changing the position of the adjusting ring 73 to support the support spring 6. This allows for convenient adjustment of the initial support height between the first suspension rod 4 and the second suspension rod 5, reducing the trouble of manual adjustment during the adjustment process.

[0041] Reference Figure 1 , Figure 2 and Figure 4 The auxiliary fixing mechanism 8 includes a fixing seat 86 fixed on the suspension rod 4, a fixing rod 81 fixed on the fixing seat 86, a fixing block 82 slidably connected on the fixing rod 81, the fixing block 82 being fixedly connected to the adjusting ring 73, a plug-in rod 83 slidably connected on the fixing block 82, a plurality of plug-in holes 84 distributed along a straight line being opened on the fixing rod 81, and a plug-in assembly 85 being provided on the fixing block 82.

[0042] In addition, the plug-in assembly 85 includes a connecting frame 852 fixed on the fixing block 82, an electric telescopic rod 851 fixed on the connecting frame 852, a connecting block 853 fixed to the telescopic end of the electric telescopic rod 851, and the connecting block 853 is fixedly connected to the plug-in rod 83.

[0043] Furthermore, an auxiliary spring 854 is provided between the plug rod 83 and the fixing block 82, and both ends of the auxiliary spring 854 are fixedly connected to the fixing block 82 and the plug rod 83.

[0044] When the adjusting ring 73 moves, the electric telescopic rod 851 drives the connecting block 853, which in turn drives the insertion rod 83. The insertion rod 83 moves on the fixed block 82, moving away from the insertion hole 84 on the fixed rod 81. When the adjusting ring 73 has moved, the electric vehicle control center uses the drive motor 752 to adjust the insertion rod 83 on the fixed block 82 so that it is aligned with the insertion hole 84 on the fixed rod 81. The electric telescopic rod 851 then drives the connecting block 853, which in turn drives the insertion rod 83, inserting it into the corresponding insertion hole 84. The connecting rod 83 restricts the fixing block 82, fixing the fixing block 82 onto the fixing rod 81. The fixing block 82 also restricts the adjusting ring 73, providing further auxiliary support for the adjusting ring 73. When the adjusting ring 73 moves, it drives the fixing block 82, allowing the fixing block 82 to move on the fixing rod 81. Then, the connecting rod 83 on the fixing block 82 is inserted into the connecting hole 84 on the fixing rod 81, further restricting the fixing block 82 and the adjusting ring 73. This provides further auxiliary support and fixation for the adjusting ring 73, improving its stability on the suspension rod 4.

[0045] Working principle: When adjusting the suspension height of an electric vehicle, the electric telescopic rod 851 drives the connecting block 853, which in turn drives the insertion rod 83. The insertion rod 83 moves on the fixed block 82, moving away from the insertion hole 84 on the fixed rod 81. The electric vehicle control center controls the drive motor 752, which drives gear one 753 to rotate. Gear one 753 drives gear two 754 to rotate, which in turn drives the adjusting threaded rod 741 to rotate. As the adjusting threaded rod 741 rotates, the threaded block 742 moves along it under the constraint of the adjusting ring 73. During this movement, the threaded block 742 drives the adjusting ring 73, which in turn supports the spring. 6 provides support. During the movement of the adjusting ring 73, the support point of the support spring 6 on the suspension rod 4 changes accordingly. Under the support of the support spring 6, the initial height of the suspension rod 5 on the suspension rod 4 changes. Under the push of the suspension rod 4 and the suspension rod 5, the angles of the upper fork arm 2 and the lower fork arm 3 change, thus completing the adjustment of the electric vehicle's suspension height. Finally, the electric telescopic rod 851 drives the connecting block 853, which in turn drives the insertion rod 83. The insertion rod 83 is inserted into the corresponding insertion hole 84, which restricts the fixing block 82, fixing the fixing block 82 onto the fixing rod 81. The fixing block 82 further restricts the adjusting ring 73, providing additional auxiliary support for the adjusting ring 73.

Claims

1. A height adjustment device for an electric vehicle suspension system, comprising a connecting collar (1), characterized in that: A lower fork arm (3) is rotatably connected to the connecting shaft collar (1), an upper fork arm (2) is rotatably connected to the connecting shaft collar (1), a suspension rod (4) is rotatably connected to the lower fork arm (3), a suspension rod (5) is slidably connected to the suspension rod (4), the end of the suspension rod (5) away from the suspension rod (4) is rotatably connected to the upper fork arm (2), a support spring (6) is sleeved between the suspension rod (4) and the suspension rod (5), one end of the support spring (6) is fixedly connected to the suspension rod (5), a height adjustment mechanism (7) is provided between the support spring (6) and the suspension rod (4), and an auxiliary fixing mechanism (8) is provided on one side of the suspension rod (4).

2. The height adjustment device for an electric vehicle suspension system according to claim 1, characterized in that: The height adjustment mechanism (7) includes a support seat (71) fixed to one end of the suspension rod (4) away from the suspension rod (5), a support seat (72) fixed to one end of the suspension rod (5) away from the suspension rod (4), an adjustment ring (73) slidably sleeved on the suspension rod (4), the adjustment ring (73) being fixedly connected to the support spring (6), a moving component (74) being provided between the support seat (71) and the adjustment ring (73), and a driving component (75) being provided on the support seat (71).

3. The height adjustment device for an electric vehicle suspension system according to claim 2, characterized in that: The movable component (74) includes an adjusting threaded rod (741) rotatably connected to a support base (71), and a threaded block (742) is threadedly connected to the adjusting threaded rod (741), and the threaded block (742) is fixedly connected to the adjusting ring (73).

4. The height adjustment device for an electric vehicle suspension system according to claim 3, characterized in that: A sliding rod (743) is rotatably connected to the second support (72), and the end of the sliding rod (743) away from the second support (72) is slidably connected to the adjusting threaded rod (741).

5. The height adjustment device for an electric vehicle suspension system according to claim 2, characterized in that: The drive assembly (75) includes a support frame (751) fixed on a support base (71), a drive motor (752) fixed on the support frame (751), a gear (753) fixed at the output end of the drive motor (752), a gear (754) meshing with the gear (753), and the gear (754) fixedly connected to the adjusting threaded rod (741).

6. The height adjustment device for an electric vehicle suspension system according to claim 2, characterized in that: The auxiliary fixing mechanism (8) includes a fixing seat (86) fixed on the suspension rod (4), a fixing rod (81) fixed on the fixing seat (86), a fixing block (82) slidably connected on the fixing rod (81), the fixing block (82) being fixedly connected to the adjusting ring (73), a plug-in rod (83) slidably connected on the fixing block (82), a plurality of plug-in holes (84) distributed along a straight line are provided on the fixing rod (81), and a plug-in assembly (85) is provided on the fixing block (82).

7. The height adjustment device for an electric vehicle suspension system according to claim 6, characterized in that: The plug-in assembly (85) includes a connecting frame (852) fixed on a fixing block (82), an electric telescopic rod (851) fixed on the connecting frame (852), a connecting block (853) fixed to the telescopic end of the electric telescopic rod (851), and the connecting block (853) is fixedly connected to the plug-in rod (83).

8. The height adjustment device for an electric vehicle suspension system according to claim 7, characterized in that: An auxiliary spring (854) is provided between the plug rod (83) and the fixing block (82), and both ends of the auxiliary spring (854) are fixedly connected to the fixing block (82) and the plug rod (83).

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