A drive-by-wire suspension adjustment device for electric vehicles

Abstract

This application discloses a drive-by-wire suspension adjustment device for electric vehicles, relating to the field of automotive structures. It includes a support plate, an upper fork arm rotatably connected to the support plate, a lower fork arm rotatably connected to the support plate, a first support rod rotatably connected to the lower fork arm, a second support rod slidably connected to the first support rod, a support spring sleeved between the first and second support rods, an auxiliary adjustment mechanism between the support spring and the first support rod, and a height adjustment mechanism between the upper and lower fork arms. The height adjustment mechanism drives the upper and lower fork arms to move synchronously, raising or lowering them to change the overall support height of the suspension. This allows for convenient adjustment of the overall height of the hinge point between the upper and lower fork arms, further increasing the range of suspension adjustment.

Description

Technical Field

[0001] This application relates to the field of automotive structures, and in particular to a drive-by-wire suspension adjustment device for electric vehicles. Background Technology

[0002] With the development of intelligent electric vehicles, the drive-by-wire suspension system has become a core technology for improving vehicle dynamic performance by replacing mechanical transmission with electrical signals. By adjusting the suspension height and damping in real time, it can optimize high-speed stability, passability in complex road conditions, and energy recovery efficiency, and has significant engineering value, especially for electric vehicles that are sensitive to battery pack ground clearance.

[0003] The current mainstream double wishbone suspension adopts a single-point height adjustment mode, which adjusts the vehicle height by changing the height of the shock absorber assembly. The traditional suspension unit consists of an upper wishbone, a lower wishbone, a support rod one, a support rod two, and a support spring. The suspension height is adjusted by adjusting the position of the support point of the support spring on the support rod one.

[0004] In traditional suspensions, the upper and lower wishbones are rotatably connected to the frame and chassis. When changing the suspension height, the hinge points of the upper and lower wishbones are fixed. Although the height of the suspension support can be adjusted, the adjustment height of the upper and lower wishbones is limited. When encountering some extreme road conditions, the existing upper and lower wishbone adjustments may not be able to meet the needs of some extreme road conditions. Utility Model Content

[0005] The purpose of this application is to address the problem mentioned in the background art that the adjustment height of the upper and lower wishbones is limited, and that existing upper and lower wishbone adjustments may be insufficient to meet the needs of some extreme road conditions. This application provides a drive-by-wire suspension adjustment device for electric vehicles.

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

[0007] An electric vehicle drive-by-wire suspension adjustment device includes a support plate, an upper fork arm rotatably connected to the support plate, a lower fork arm rotatably connected to the support plate, a first support rod rotatably connected to the lower fork arm, a second support rod slidably connected to the first support rod, a support spring sleeved between the first and second support rods, one end of the support spring being fixedly connected to the end of the second support rod away from the first support rod, an auxiliary adjustment mechanism being provided between the support spring and the first support rod, and a vertical adjustment mechanism being provided between the upper and lower fork arms.

[0008] By adopting the above technical solution, the upper and lower control arms are moved synchronously by the upper and lower adjustment mechanisms, allowing them to rise or fall and change the overall support height of the suspension. At the same time, the auxiliary adjustment mechanism moves the support spring, causing the support point of the support spring on the support rod to change with the movement of the upper and lower control arms. When the upper and lower control arms change, the support spring maintains a stable support, thus making it easy to change the overall height of the hinge point of the upper and lower control arms and further improving the range of suspension adjustment.

[0009] Furthermore, the up-down adjustment mechanism includes an upper adjustment plate rotatably connected to the upper fork arm, a lower adjustment plate rotatably connected to the lower fork arm, an adjustment block fixed on both the upper and lower fork arms, a moving component on the adjustment block, and a driving component on the adjustment block.

[0010] By adopting the above technical solution, the driving component drives the adjusting block, which moves on the moving component. The adjusting block drives the corresponding upper and lower adjusting plates, which in turn drive the corresponding upper and lower forks. This allows for easy adjustment of the overall height of the hinge points of the upper and lower forks, further improving the range of suspension adjustment.

[0011] Furthermore, the moving component includes a moving block fixed on an adjusting block, a moving rail slidably connected to the moving block, a moving threaded rod rotatably connected to the moving rail, the moving threaded rod passing through the moving block and threadedly connected to the moving block, and two symmetrical fixing plates fixed on the moving rail, with a plurality of fixing holes provided on the fixing plates.

[0012] By adopting the above technical solution, the movable threaded rod rotates on the movable rail, which drives the movable block, and the movable block drives the adjusting block, thus making it easy for the adjusting block to move on the movable rail.

[0013] Furthermore, the drive assembly includes a support frame fixed to one end of the moving rail, a drive motor fixed on the support frame, the output end of the drive motor passing through the support frame and fixed with a second bevel gear, a first bevel gear meshing with the second bevel gear, and one end of the moving threaded rod passing through the moving rail and fixedly connected to the first bevel gear.

[0014] By adopting the above technical solution, the drive motor drives bevel gear two, bevel gear two drives bevel gear one, and bevel gear one drives the moving threaded rod, thereby enabling the moving threaded rod to rotate conveniently on the moving rail.

[0015] Furthermore, two symmetrical reinforcing blocks are fixed on both the upper and lower adjusting plates, and are located on both sides of the adjusting blocks.

[0016] By adopting the above technical solution, corresponding reinforcing blocks are fixed on the upper and lower adjusting plates, thereby further enhancing the overall strength of the upper and lower adjusting plates.

[0017] Furthermore, the auxiliary adjustment mechanism includes a support base fixed on the support rod, an adjustment seat is provided on the support base, the adjustment seat is slidably connected to the support rod, and an adjustment component is provided between the adjustment seat and the support base.

[0018] By adopting the above technical solution, the adjusting component on the support base drives the adjusting base, which in turn moves the support spring. This reduces the possibility that the supporting force of the support spring will be affected when adjusting the position of the upper and lower forks, while also facilitating the adjustment of the basic suspension.

[0019] Furthermore, the adjusting assembly includes a threaded block fixed on the adjusting seat, and an adjusting threaded rod rotatably connected to the supporting seat. The adjusting threaded rod passes through the threaded block and is threadedly connected to the threaded block.

[0020] By adopting the above technical solution, when the threaded rod rotates, it drives the threaded block, allowing the threaded block to move under the restriction of the adjusting seat, thereby making it convenient for the threaded block to drive the adjusting seat.

[0021] Furthermore, a support frame is fixed on the support base, an auxiliary motor is fixed on the support frame, an adjusting gear two is fixed at the output end of the auxiliary motor, an adjusting gear one is meshed on the adjusting gear two, and the adjusting gear one is fixedly connected to the adjusting threaded rod.

[0022] By adopting the above technical solution, an auxiliary motor drives the second adjusting gear, which in turn drives the first adjusting gear, which in turn drives the adjusting threaded rod, which in turn drives the threaded block, thus allowing the adjusting threaded rod to rotate easily on the support base.

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

[0024] 1. This application, by fixing the fixed plate on the moving rail to the corresponding positions on the frame and chassis with bolts, directly starts two drive motors when adjusting the height of the hinge points of the upper and lower forks. The two drive motors drive bevel gear two, which in turn drives bevel gear one to rotate. Bevel gear one drives the moving threaded rod to rotate on the moving rail. The moving threaded rod rotates on the moving rail and drives the moving block. The moving block moves along the moving rail and drives the adjusting block. The adjusting block drives the corresponding upper or lower adjusting plate. Then, the upper or lower adjusting plate drives the corresponding upper and lower forks to move synchronously. The upper and lower forks drive the support plate to change its height, thus achieving the purpose of conveniently changing the overall height of the hinge points of the upper and lower forks and further improving the range of suspension adjustment.

[0025] 2. In this application, when the upper and lower forks move, the lower fork moves the support rod and the support spring, causing a change in the support force of the support spring. When the support force of the support spring changes, an auxiliary motor drives the adjusting gear two, which in turn drives the adjusting gear one. The adjusting gear one drives the adjusting threaded rod, which in turn drives the threaded block, which in turn drives the adjusting seat. The adjusting seat then drives the support spring, changing the position of the support point of the support spring on the support rod one. This reduces the possibility that the support force of the support spring will be affected when adjusting the position of the upper and lower forks. Furthermore, after the upper and lower forks are adjusted, the position of the support spring can be changed independently using the adjusting seat, allowing the angle of the upper and lower forks to change. This facilitates the adjustment of the basic suspension, achieving the goal of reducing the possibility that the support force of the support spring will be affected when adjusting the position of the upper and lower forks, while also facilitating the adjustment of the basic suspension. Attached Figure Description

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

[0027] Figure 2 This is a three-dimensional structural diagram of the vertical adjustment mechanism in this application;

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

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Support plate; 2. Upper fork arm; 3. Lower fork arm; 4. Support rod one; 5. Support rod two; 6. Support spring; 7. Up and down adjustment mechanism; 71. Upper adjustment plate; 72. Lower adjustment plate; 73. Adjustment block; 74. Moving assembly; 741. Moving block; 742. Moving rail; 743. Moving threaded rod; 744. Fixed plate; 75. Drive assembly; 751. Support frame; 752. Bevel gear one; 753. Bevel gear two; 754. Drive motor; 76. Reinforcing block; 8. Auxiliary adjustment mechanism; 81. Support seat; 82. Adjustment seat; 83. Adjustment assembly; 831. Threaded block; 832. Adjusting threaded rod; 833. Support frame; 834. Adjusting gear one; 835. Adjusting gear two; 836. Auxiliary motor. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a drive-by-wire suspension adjustment device for electric vehicles.

[0033] Reference Figure 1 , Figure 2 and Figure 3 An electric vehicle drive-by-wire suspension adjustment device includes a support plate 1, an upper fork arm 2 rotatably connected to the support plate 1, a lower fork arm 3 rotatably connected to the support plate 1, a support rod 4 rotatably connected to the lower fork arm 3, a support rod 5 slidably connected to the support rod 4, a support spring 6 sleeved between the support rod 4 and the support rod 5, one end of the support spring 6 being fixedly connected to the end of the support rod 5 away from the support rod 4, an auxiliary adjustment mechanism 8 being provided between the support spring 6 and the support rod 4, and an up-and-down adjustment mechanism 7 being provided between the upper fork arm 2 and the lower fork arm 3.

[0034] When using this electric vehicle drive-by-wire suspension adjustment device, firstly, connect the upper wishbone 2 to the vehicle frame using the upper part of the upper and lower adjustment mechanism 7, and then connect the lower wishbone 3 to the vehicle chassis using the lower part of the upper and lower adjustment mechanism 7 to complete the suspension installation. During suspension adjustment, use the upper and lower adjustment mechanism 7 to move the upper wishbone 2 and lower wishbone 3 synchronously, raising or lowering them to change the overall suspension support height. Simultaneously, the auxiliary adjustment mechanism 8 moves the support spring 6, causing the support point of the support spring 6 on the support rod 4 to move with the movement of the upper and lower wishbone 2 and lower wishbone 3. When the movement changes, causing the upper wishbone 2 and lower wishbone 3 to change, the support spring 6 maintains stable support. At the same time, the position of the support spring 6 on the support rod 4 can be adjusted independently using the auxiliary adjustment mechanism 8, changing the support angle between the upper wishbone 2 and lower wishbone 3, and changing the height of the suspension near the support plate 1. The upper wishbone 2 and lower wishbone 3 are supported by the up-and-down adjustment mechanism 7, and the up-and-down adjustment mechanism 7 drives the upper wishbone 2 and lower wishbone 3 to move synchronously, thereby facilitating the change of the overall height of the hinge point of the upper wishbone 2 and lower wishbone 3, and further improving the range of suspension adjustment.

[0035] Reference Figure 1 and Figure 2 The up-down adjustment mechanism 7 includes an upper adjustment plate 71 rotatably connected to the upper fork arm 2, a lower adjustment plate 72 rotatably connected to the lower fork arm 3, an adjustment block 73 fixed on both the upper fork arm 2 and the lower fork arm 3, a moving component 74 provided on the adjustment block 73, and a driving component 75 provided on the adjustment block 73.

[0036] In addition, the moving component 74 includes a moving block 741 fixed on the adjusting block 73, a moving rail 742 slidably connected to the moving block 741, a moving threaded rod 743 rotatably connected to the moving rail 742, the moving threaded rod 743 passing through the moving block 741 and threadedly connected to the moving block 741, and two symmetrical fixing plates 744 fixed on the moving rail 742, with a plurality of fixing holes provided on the fixing plates 744.

[0037] Furthermore, the drive assembly 75 includes a support frame 751 fixed to one end of the moving rail 742, a drive motor 754 fixed on the support frame 751, the output end of the drive motor 754 passing through the support frame 751 and fixed with a second bevel gear 753, a first bevel gear 752 meshing with the second bevel gear 753, and one end of the moving threaded rod 743 passing through the moving rail 742 and fixedly connected with the first bevel gear 752.

[0038] Furthermore, two symmetrical reinforcing blocks 76 are fixed on both the upper adjusting plate 71 and the lower adjusting plate 72, and are located on both sides of the adjusting block 73.

[0039] The fixing plate 744 on the moving rail 742 is fixed to the corresponding position on the frame and chassis using bolts. When adjusting the height of the hinge point of the upper fork 2 and the lower fork 3, the two drive motors 754 are directly started, causing the two drive motors 754 to drive the second bevel gear 753, which in turn drives the first bevel gear 752 to rotate. The first bevel gear 752 drives the moving threaded rod 743 to rotate on the moving rail 742. The moving threaded rod 743 rotates on the moving rail 742, which in turn drives the moving block 741. The moving block 741 moves along the moving rail 742. 41 drives the adjusting block 73, which in turn drives the corresponding upper adjusting plate 71 or lower adjusting plate 72. Then, the upper adjusting plate 71 or lower adjusting plate 72 drives the corresponding upper fork 2 and lower fork 3 to move synchronously. The upper fork 2 and lower fork 3 drive the support plate 1 to change its height. By fixing the moving block 741 to the corresponding frame and chassis, the moving block 741 drives the adjusting block 73, which in turn drives the corresponding upper fork 2 and lower fork 3 to move synchronously. This allows for easy adjustment of the overall height of the hinge point of the upper fork 2 and lower fork 3, further improving the range of suspension adjustment.

[0040] Reference Figure 1 and Figure 3 The auxiliary adjustment mechanism 8 includes a support seat 81 fixed on the support rod 4, an adjustment seat 82 is provided on the support seat 81, the adjustment seat 82 is slidably connected to the support rod 4, and an adjustment component 83 is provided between the adjustment seat 82 and the support seat 81.

[0041] In addition, the adjustment assembly 83 includes a threaded block 831 fixed on the adjustment seat 82, and an adjustment threaded rod 832 rotatably connected to the support seat 81. The adjustment threaded rod 832 passes through the threaded block 831 and is threadedly connected to the threaded block 831.

[0042] Furthermore, a support frame 833 is fixed on the support base 81, an auxiliary motor 836 is fixed on the support frame 833, an adjusting gear 835 is fixed at the output end of the auxiliary motor 836, an adjusting gear 834 is meshed on the adjusting gear 835, and the adjusting gear 834 is fixedly connected to the adjusting threaded rod 832.

[0043] When the upper fork arm 2 and the lower fork arm 3 move, the lower fork arm 3 drives the support rod 4 and the support spring 6 to move, causing a change in the support force of the support spring 6. When the support force of the support spring 6 changes, the auxiliary motor 836 drives the adjusting gear 2 835, which in turn drives the adjusting gear 1 834. The adjusting gear 1 834 drives the adjusting threaded rod 832, which in turn drives the threaded block 831. The threaded block 831 then drives the adjusting seat 82, which in turn drives the support spring 6, changing the position of the support point of the support spring 6 on the support rod 4, thus reducing the need for adjustment of the upper fork arm 2 and the lower fork arm 3. When adjusting the position of the lower fork arm 3, the supporting force of the support spring 6 may be affected. At the same time, after the upper fork arm 2 and the lower fork arm 3 are adjusted, the position of the support spring 6 can be changed independently using the adjusting seat 82, so that the angle of the upper fork arm 2 and the lower fork arm 3 changes, which facilitates the adjustment of the basic suspension. By using the threaded block 831 to move on the adjusting threaded rod 832, the threaded block 831 drives the adjusting seat 82, and the adjusting seat 82 changes the support position of the support spring 6, thereby reducing the possibility that the supporting force of the support spring 6 may be affected when adjusting the position of the upper fork arm 2 and the lower fork arm 3, and at the same time facilitating the adjustment of the basic suspension.

[0044] Working principle: The fixing plate 744 on the moving rail 742 is fixed to the corresponding position on the frame and chassis using bolts. When adjusting the height of the hinge point of the upper fork 2 and the lower fork 3, the two drive motors 754 are directly started, causing the two drive motors 754 to drive the second bevel gear 753. The second bevel gear 753 drives the first bevel gear 752 to rotate. The first bevel gear 752 drives the moving threaded rod 743 to rotate on the moving rail 742. The moving threaded rod 743 drives the moving block 741, which moves along the moving rail 742. The moving block 741 drives the adjusting block 73, which drives the corresponding upper adjusting plate 71 or lower adjusting plate 73. Adjusting plate 72, then upper adjusting plate 71 or lower adjusting plate 72 drives the corresponding upper fork arm 2 and lower fork arm 3 to move synchronously. Upper fork arm 2 and lower fork arm 3 drive support plate 1 to change height. At the same time, auxiliary motor 836 drives adjusting gear 2 835, adjusting gear 2 835 drives adjusting gear 1 834, adjusting gear 1 834 drives adjusting threaded rod 832, allowing adjusting threaded rod 832 to drive threaded block 831, allowing threaded block 831 to drive adjusting seat 82 to move. Adjusting seat 82 drives support spring 6, changing the position of support spring 6 on support rod 1 4, reducing the possibility that the supporting force of support spring 6 will be affected when adjusting the position of upper fork arm 2 and lower fork arm 3.

Claims

1. A drive-by-wire suspension adjustment device for an electric vehicle, comprising a support disc (1), characterized in that: An upper fork arm (2) is rotatably connected to the support plate (1), a lower fork arm (3) is rotatably connected to the support plate (1), a support rod one (4) is rotatably connected to the lower fork arm (3), a support rod two (5) is slidably connected to the support rod one (4), a support spring (6) is sleeved between the support rod one (4) and the support rod two (5), one end of the support spring (6) is fixedly connected to the end of the support rod two (5) away from the support rod one (4), an auxiliary adjustment mechanism (8) is provided between the support spring (6) and the support rod one (4), and an up-and-down adjustment mechanism (7) is provided between the upper fork arm (2) and the lower fork arm (3), the up-and-down adjustment mechanism (7) includes The auxiliary adjustment mechanism (8) includes an upper adjustment plate (71) rotatably connected to the upper fork arm (2), a lower adjustment plate (72) rotatably connected to the lower fork arm (3), an adjustment block (73) fixed on both the upper fork arm (2) and the lower fork arm (3), a moving component (74) provided on the adjustment block (73), a driving component (75) provided on the adjustment block (73), and a support seat (81) fixed on the support rod (4). An adjustment seat (82) is provided on the support seat (81), and the adjustment seat (82) is slidably connected to the support rod (4). An adjustment component (83) is provided between the adjustment seat (82) and the support seat (81).

2. The electric vehicle drive-by-wire suspension adjustment device according to claim 1, characterized in that: The moving component (74) includes a moving block (741) fixed on an adjusting block (73), a moving rail (742) slidably connected to the moving block (741), a moving threaded rod (743) rotatably connected to the moving rail (742), the moving threaded rod (743) passing through the moving block (741) and threadedly connected to the moving block (741), and two symmetrical fixing plates (744) fixed on the moving rail (742), with a plurality of fixing holes provided on the fixing plates (744).

3. The electric vehicle drive-by-wire suspension adjustment device according to claim 2, characterized in that: The drive assembly (75) includes a support frame (751) fixed to one end of the moving rail (742), a drive motor (754) fixed on the support frame (751), the output end of the drive motor (754) passing through the support frame (751) and fixed with a second bevel gear (753), a first bevel gear (752) meshing with the second bevel gear (753), and one end of the moving threaded rod (743) passing through the moving rail (742) and fixedly connected to the first bevel gear (752).

4. The electric vehicle drive-by-wire suspension adjustment device according to claim 3, characterized in that: Two symmetrical reinforcing blocks (76) are fixed on both the upper adjusting plate (71) and the lower adjusting plate (72), and are located on both sides of the adjusting block (73).

5. The electric vehicle drive-by-wire suspension adjustment device according to claim 1, characterized in that: The adjustment assembly (83) includes a threaded block (831) fixed on the adjustment seat (82), and an adjustment threaded rod (832) is rotatably connected to the support seat (81). The adjustment threaded rod (832) passes through the threaded block (831) and is threadedly connected to the threaded block (831).

6. The electric vehicle drive-by-wire suspension adjustment device according to claim 5, characterized in that: A support frame (833) is fixed on the support base (81), and an auxiliary motor (836) is fixed on the support frame (833). An adjusting gear two (835) is fixed at the output end of the auxiliary motor (836), and an adjusting gear one (834) is meshed on the adjusting gear two (835). The adjusting gear one (834) is fixedly connected to the adjusting threaded rod (832).

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