New energy automobile electric drive support arm assembly structure

Abstract

The application discloses a new energy automobile electric drive supporting arm assembly structure and relates to the related field of new energy automobiles. The new energy automobile electric drive supporting arm assembly structure comprises a bracket, a fixing frame is connected to the two sides of the bracket through a connecting frame, a support is arranged on the top of the fixing frame, a piston rod is symmetrically arranged on the top of the bracket, the top of the piston rod is slidably connected to the top of a cylinder body, a buffer adjusting assembly is arranged on the inner side of the left and right ends of the bracket, and a pre-tightening force adjusting assembly is arranged in the fixing frame. In the use process, when the automobile runs on a bumpy road, the stress sensor of the connecting component and the displacement sensor of the buffer component feed back relevant information to a feedback control unit. After the feedback control unit judges the working condition and the component state, the electric drive is controlled to cooperatively adjust the damping force of the piston rod and the cylinder body and the pre-tightening force between the fixing frame and the support, so that the two can collaboratively resist the impact force or share the force, and the anti-bumping and anti-deformation capabilities are improved.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, specifically to a new energy vehicle electric drive support arm assembly structure. Background Technology

[0002] The electric drive support arm assembly structure (front suspension bracket) of new energy vehicles is an important component of automobiles. The electric drive support arm assembly of new energy vehicles is a core load-bearing component that connects the front suspension, electric drive system and chassis. It must simultaneously bear the weight of the electric drive system, the torque of power transmission and the impact load of road bumps.

[0003] Existing electric drive tow arm assemblies have defects: traditional steel or aluminum alloy welded structures are prone to stress concentration under high-frequency impact, leading to deformation or cracks. The rigid connection design cannot effectively absorb road vibrations, which not only affects driving comfort but also exacerbates vibration fatigue of the electric drive system and battery. During use, the connecting components between the vehicle body and the tow arm, as well as the buffer components between the tow arm and the vehicle body, in the electric drive tow arm assembly usually work independently, lacking an effective collaborative feedback mechanism. When dealing with complex road conditions, it is difficult to accurately adjust the buffering force and connection stiffness, resulting in poor anti-bump and anti-deformation effects, which affects the driving experience and vehicle lifespan. Summary of the Invention

[0004] The purpose of this invention is to provide a new energy vehicle electric drive support arm assembly structure to solve the problems mentioned in the background art. In the process of use, the rigid connection design of the existing new energy vehicle electric drive support arm assembly structure cannot effectively absorb road vibration. In the electric drive support arm assembly, the connecting parts between the vehicle body and the support arm and the buffer parts between the support arm and the vehicle body usually work independently and lack an effective collaborative feedback mechanism. When dealing with complex road conditions, it is difficult to accurately adjust the buffer force and connection stiffness, resulting in poor anti-bump and anti-deformation effects, which affects the driving experience and vehicle service life.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a new energy vehicle electric drive support arm assembly structure, including a bracket, connecting frames symmetrically and rotatably connected on both sides of the bracket, a fixed frame provided on the connecting frame, a bracket sleeved on the top of the fixed frame, the top of the bracket being connected and fixedly connected to the bottom of the vehicle frame, piston rods symmetrically provided on the top of the left and right ends of the bracket, the top of the piston rods being slidably connected to the top of the cylinder body, the top of the cylinder body being fixedly connected to the bottom of the vehicle frame, and a helical spring provided on the outside of the piston rods and the cylinder body;

[0006] A displacement sensor is installed on the piston rod, and a buffer adjustment component is provided on the inner side of both ends of the bracket. The buffer adjustment component adjusts the use status of the piston rod and the cylinder through the feedback of the displacement sensor to buffer the bumps and impacts.

[0007] A stress sensor is provided on one side of the fixed frame relative to the support. A preload adjustment component is provided inside the fixed frame. The preload adjustment component, together with the buffer adjustment mechanism, enhances the overall anti-bump and anti-deformation ability of the support arm, ensuring the smooth operation of the vehicle body.

[0008] Furthermore, the buffer adjustment assembly includes a magnetic fluid filled between the piston rod and the cylinder. An electromagnetic coil is wound around the top outer side of the piston rod. The magnetic force of the electromagnetic coil affects the flow state of the magnetic fluid. When the magnetic field is weak, the magnetic fluid is liquid. When the magnetic field is enhanced, the magnetic fluid forms a chain-like structure that hinders the flow of liquid.

[0009] Furthermore, the buffer adjustment assembly also includes a first inner cavity opened inside the left and right ends of the bracket, and the top of the first inner cavity is symmetrically provided with solenoid valves for inlet and outlet of oil, with the flow directions of the two solenoid valves being opposite.

[0010] Furthermore, an extrusion plate is slidably connected to the top inner side of the first inner cavity, and a piezoelectric sheet is abutted against the bottom of the extrusion plate. The bottom of the piezoelectric sheet is connected to the bottom of the first inner cavity through a first spring, and the piezoelectric sheet slides in a sealed fit with the inner wall of the first inner cavity.

[0011] Furthermore, the electrical energy generated by the piezoelectric element is stored in a battery, which is located inside the left and right ends of the bracket. Feedback control units are located inside both ends of the bracket. The battery supplies power to the electromagnetic coil to enhance the magnetic force.

[0012] Furthermore, the preload adjustment assembly includes a second inner cavity opened inside the fixing frame. The second inner cavity is connected to the bottom inner side of the first inner cavity through a connecting pipe. The lower part of the first inner cavity is filled with oil. A movable part is slidably connected in the second inner cavity. A second spring is installed between the movable part and the second inner cavity.

[0013] Furthermore, the movable component is configured as a "T" shaped structure, with rectangular structures at the ends and cylindrical structures in the middle.

[0014] Furthermore, the outer end of the movable part is connected to the inner middle of the screw, the screw is rotatably connected to the outside of the fixed frame, the outer side of the screw is threaded with a bracket, the fixed frame is configured as a rectangular structure, and the right outer side of the fixed frame is slidably connected to the left inner side of the bracket.

[0015] Furthermore, a protrusion is fixedly installed on the outer side of the middle part of the movable part, and the protrusion is slidably connected in a spiral groove, which is formed on the inner wall of the screw.

[0016] Furthermore, the screw is driven by the helical groove and the protrusion to form a rotating structure, and the screw drives the bracket to move outside the fixed frame to form a pre-tightening structure.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In the operation of this new energy vehicle electric drive support arm assembly, when the vehicle encounters bumps, the stress sensor of the connecting component and the displacement sensor of the buffer component feed back relevant information to the feedback control unit. After judging the working condition and component status, the feedback control unit controls the electric drive cooperative adjustment mechanism to adjust the damping force of the magnetorheological damper (piston rod and cylinder) and the preload of the connecting components (fixed frame and bracket), so that the two work together to resist the impact force or share the force, thereby improving the ability to resist bumps and deformation.

[0019] Furthermore, when the vehicle encounters bumps, the piston rod slides relative to the cylinder block. The displacement sensor detects the sliding distance in real time and transmits the signal to the feedback control unit. The feedback control unit determines the bump level based on the displacement. The solenoid valve injects oil into the first inner cavity, and the pressure plate moves down to compress the first spring. The electrical energy generated by the piezoelectric sheet after being compressed is stored in the battery to power the electromagnetic coil. The magnetic force of the electromagnetic coil is enhanced, and the magnetohydrodynamic fluid forms a chain structure to hinder the flow, increasing the damping force. Together with the helical spring, it absorbs the impact energy.

[0020] Furthermore, the oil in the lower part of the first inner cavity flows into the second inner cavity with the buffer action, pushing the movable part to stretch the second spring. After the movable part moves, it will drive the protrusion to slide along the spiral groove on the inner wall of the screw, causing the screw to rotate and causing the bracket to extend outside the fixed frame, increasing the connection preload and strengthening the overall rigidity. The preload adjustment and the buffer damping adjustment are carried out simultaneously. Under strong stress, the preload is increased to resist deformation, and under weak stress, the preload is relaxed to cooperate with the buffer, avoiding excessive rigidity and aggravating the bumps. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall rear view structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the bracket, connecting frame, support, piston rod, and cylinder structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the bracket end of the present invention;

[0025] Figure 5 This is a schematic diagram of the cylinder block cross-section of the present invention;

[0026] Figure 6This is a schematic diagram of the piston rod, electromagnetic coil, and displacement sensor of the present invention;

[0027] Figure 7 This is a schematic diagram of the connection structure of the connecting frame, fixing frame and support of the present invention;

[0028] Figure 8 This is a schematic diagram of the cross-sectional structure of the bracket of the present invention;

[0029] Figure 9 This is a schematic diagram of the exploded internal structure of the fixing frame of the present invention;

[0030] Figure 10 This is a cross-sectional view of the connection between the movable frame and the screw of the present invention.

[0031] In the diagram: 1. Bracket; 2. Connecting frame; 3. Fixing frame; 4. Support; 5. Piston rod; 6. Cylinder body; 7. Helical spring; 8. First inner cavity; 9. Solenoid valve; 10. Extrusion plate; 11. Piezoelectric sheet; 12. First spring; 13. Battery; 14. Electromagnetic coil; 15. Displacement sensor; 16. Second inner cavity; 17. Moving part; 18. Second spring; 19. Protrusion; 20. Helical groove; 21. Screw; 22. Stress sensor. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figure 1 - Figure 7 The present invention provides the following technical solution: a new energy vehicle electric drive support arm assembly structure, including a bracket 1, a connecting frame 2 symmetrically rotatably connected to both sides of the bracket 1, a fixed frame 3 provided on the connecting frame 2, a bracket 4 sleeved on the top of the fixed frame 3, the top of the bracket 4 being fixedly connected to the bottom of the vehicle frame, piston rods 5 symmetrically provided on the top of the left and right ends of the bracket 1, the top of the piston rods 5 being slidably connected to the top of the cylinder 6, the top of the cylinder 6 being fixedly connected to the bottom of the vehicle frame, a coil spring 7 provided on the outside of the piston rods 5 and the cylinder 6, a displacement sensor 15 installed on the piston rods 5, a buffer adjustment component provided on the inner side of the left and right ends of the bracket 1, and the buffer adjustment component adjusts the usage state of the piston rods 5 and the cylinder 6 through the feedback of the displacement sensor 15 to buffer the impact of bumps, a stress sensor 22 provided on the side of the fixed frame 3 opposite to the bracket 4, a preload adjustment component provided inside the fixed frame 3, and the preload adjustment component, together with the buffer adjustment mechanism, improves the overall anti-bump and anti-deformation ability of the support arm, ensuring the smooth operation of the vehicle body.

[0034] like Figure 1 - Figure 7 As shown, during use, bracket 1 serves as the load-bearing base, and a connection system is formed by connecting brackets 2 on both sides, fixing brackets 3, and support brackets 4. A buffer system is formed by piston rod 5, cylinder 6, and coil spring 7. Displacement sensor 15 serves as the adjustment basis, and stress sensor 22 detects stress changes and works in coordination. The buffer adjustment component adjusts the damping force to absorb bumps and impacts through displacement feedback, and the preload adjustment component adjusts the connection stiffness to resist deformation through stress feedback. Both components operate synchronously under the coordination of the feedback control unit. The buffer component and the preload component form a closed loop of "impact absorption - stiffness adaptation". When bumps occur, the buffer component quickly absorbs energy, and the preload component synchronously increases the connection stiffness. When the road conditions are smooth, both components automatically reset, balancing comfort and structural stability. Ultimately, this achieves a synergistic improvement in the anti-bump and anti-deformation capabilities of the support arm assembly under complex road conditions, ensuring the smooth operation of the vehicle body.

[0035] Example 2:

[0036] Based on Embodiment 1, a buffer adjustment component is also disclosed that dynamically adapts to the turbulence intensity through magnetohydrodynamic damping. Please refer to [link / reference]. Figure 1 - Figure 6 As shown, its specific structure is as follows: The buffer adjustment assembly includes a magnetic fluid filled between the piston rod 5 and the cylinder 6. An electromagnetic coil 14 is wound around the top outer side of the piston rod 5. The magnetic force of the electromagnetic coil 14 affects the flow state of the magnetic fluid. When the magnetic field is weak, the magnetic fluid is liquid. When the magnetic field is enhanced, the magnetic fluid forms a chain structure that hinders the flow of liquid. The buffer adjustment assembly also includes a first inner cavity 8 opened inside the left and right ends of the bracket 1. The top of the first inner cavity 8 is symmetrically provided with solenoid valves 9 for inlet and outlet of oil. The flow directions of the two solenoid valves 9 are opposite.

[0037] Figure 1 - Figure 6 As shown, during use, when the vehicle encounters bumps, the piston rod 5 slides up and down relative to the cylinder 6. The displacement sensor 15 detects the sliding distance in real time and transmits the signal to the feedback control unit. The feedback control unit determines the bump level based on the displacement and controls the flow rate in the solenoid valve 9 according to the level. After the liquid-inlet solenoid valve 9 is opened, the oil is injected into the interior of the first inner cavity 8, thereby causing the extrusion plate 10 to move down.

[0038] like Figure 5 - Figure 6As shown, a pressing plate 10 is slidably connected to the top of the inner side of the first inner cavity 8, and a piezoelectric sheet 11 is abutted against the bottom of the pressing plate 10. The bottom of the piezoelectric sheet 11 is connected to the bottom of the first inner cavity 8 through a first spring 12. The piezoelectric sheet 11 slides in a sealed fit with the inner wall of the first inner cavity 8. The electricity generated by the piezoelectric sheet 11 is stored in the battery 13. The battery 13 is disposed inside the left and right ends of the bracket 1. Feedback control units are disposed inside the left and right ends of the bracket 1. The battery 13 supplies power to the electromagnetic coil 14 to improve the magnetic force.

[0039] During use, the extrusion plates 10 in the first inner cavities 8 on both sides of the bracket 1 extrude pressure on the piezoelectric sheet 11 as it is bumped. After the piezoelectric sheet 11 moves down, it extrudes the first spring 12. The electrical energy generated by the piezoelectric sheet 11 under pressure is stored in the battery 13 to power the electromagnetic coil 14. The solenoid valve 9 controls the flow of oil in the first inner cavity 8 to assist in the operation of the stabilizing buffer assembly. During weak bumps, the magnetic force of the electromagnetic coil 14 is weak, the magnetofluid is in a liquid state, and the damping force is small. At this time, only the helical spring 7 plays a buffering role. During strong bumps, the magnetic force of the electromagnetic coil 14 is enhanced, the magnetofluid forms a chain structure to hinder the flow, the damping force is increased, and it works with the helical spring 7 to absorb the impact energy.

[0040] Example 3:

[0041] Based on Embodiment 2, a preload adjustment component is also disclosed that adjusts the connection stiffness through mechanical transmission, working in conjunction with the buffer component to resist deformation. Please refer to [link / reference]. Figure 1 - Figure 3 and Figure 8 - Figure 10 As shown, its specific structure is as follows: The preload adjustment assembly includes a second inner cavity 16 opened inside the fixed frame 3. The second inner cavity 16 is connected to the bottom inner side of the first inner cavity 8 through a connecting pipe. The lower part of the first inner cavity 8 is filled with oil. A movable part 17 is slidably connected in the second inner cavity 16. A second spring 18 is installed between the movable part 17 and the second inner cavity 16.

[0042] like Figure 8 - Figure 10 As shown, during use, when the connection between the fixed frame 3 and the bracket 4 is subjected to a bumpy force, the stress sensor 22 detects the stress change and transmits the signal to the feedback control unit. The oil in the lower part of the first inner cavity 8 flows into the second inner cavity 16 with the buffer action, pushing the movable part 17 to stretch the second spring 18.

[0043] like Figure 9 - Figure 10As shown, the movable part 17 is generally configured as a "T" shaped structure. The ends of the movable part 17 are rectangular structures, and the middle part of the movable part 17 is a cylindrical structure. The outer end of the movable part 17 is connected to the inner middle of the screw 21. The screw 21 is rotatably connected to the outside of the fixed frame 3. The outer side of the screw 21 is threadedly connected to the bracket 4. The fixed frame 3 is a rectangular structure. The right side of the fixed frame 3 is slidably connected to the left side of the bracket 4. A protrusion 19 is fixedly installed on the outer side of the middle part of the movable part 17. The protrusion 19 is slidably connected in the spiral groove 20. The spiral groove 20 is opened on the inner wall of the screw 21. The screw 21 is driven by the spiral groove 20 and the protrusion 19 to form a rotating structure. The screw 21 drives the bracket 4 to move outside the fixed frame 3 to pre-tighten the structure.

[0044] like Figure 9 - Figure 10 As shown, during use, after the movable part 17 moves, it will cause the protrusion 19 to slide along the spiral groove 20 on the inner wall of the screw 21, causing the screw 21 to rotate and causing the bracket 4 to extend outside the fixed frame 3, increasing the connection preload and strengthening the overall rigidity. The preload adjustment and the buffer damping adjustment are carried out simultaneously. Under strong stress, the preload is increased to resist deformation, and under weak stress, the preload is relaxed to cooperate with the buffer, so as to avoid excessive rigidity and aggravate the bumps.

[0045] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A new energy vehicle electric drive support arm assembly structure, including a bracket (1), a connecting frame (2) symmetrically rotatably connected to both sides of the bracket (1), a fixing frame (3) provided on the connecting frame (2), a bracket (4) sleeved on the top of the fixing frame (3), the top of the bracket (4) being connected and fixed to the bottom of the vehicle frame, piston rods (5) symmetrically provided on the top of the left and right ends of the bracket (1), the top of the piston rods (5) being slidably connected to the top of the cylinder (6), the top of the cylinder (6) being fixedly connected to the bottom of the vehicle frame, and a helical spring (7) provided on the outside of the piston rods (5) and the cylinder (6). Its features are: A displacement sensor (15) is installed on the piston rod (5), and a buffer adjustment component is provided on the inner side of the left and right ends of the bracket (1). The buffer adjustment component adjusts the use status of the piston rod (5) and the cylinder (6) by the feedback of the displacement sensor (15) to buffer the bumps and impacts. The buffer adjustment assembly also includes a first inner cavity (8) opened inside the left and right ends of the bracket (1); The fixed frame (3) is provided with a stress sensor (22) on one side relative to the bracket (4). The fixed frame (3) is provided with a pre-tension force adjustment component. The pre-tension force adjustment component works with the buffer adjustment mechanism to improve the overall anti-bump and anti-deformation ability of the support arm, ensuring the smooth operation of the vehicle body. The preload adjustment assembly includes a second inner cavity (16) opened inside the fixed frame (3). The second inner cavity (16) is connected to the bottom inner side of the first inner cavity (8) through a connecting pipe. The lower part of the first inner cavity (8) is filled with oil. A movable part (17) is slidably connected in the second inner cavity (16). A second spring (18) is installed between the movable part (17) and the second inner cavity (16). The outer end of the movable part (17) is connected to the inner middle of the screw (21). The screw (21) is rotatably connected to the outside of the fixed frame (3). The outer side of the screw (21) is threadedly connected to the bracket (4). The fixed frame (3) is set as a rectangular structure. The right side of the fixed frame (3) is slidably connected to the left side of the bracket (4). A protrusion (19) is fixedly installed on the outer side of the middle part of the movable part (17). The protrusion (19) is slidably connected in the spiral groove (20), which is opened on the inner wall of the screw (21).

2. The electric drive support arm assembly structure for a new energy vehicle according to claim 1, characterized in that: The buffer adjustment assembly includes a magnetic fluid filled between the piston rod (5) and the cylinder (6). An electromagnetic coil (14) is wound around the top outer side of the piston rod (5). The magnitude of the magnetic force of the electromagnetic coil (14) affects the flow state of the magnetic fluid. When the magnetic field is weak, the magnetic fluid is liquid. When the magnetic field is enhanced, the magnetic fluid forms a chain structure that hinders the flow of liquid.

3. The electric drive support arm assembly structure for a new energy vehicle according to claim 2, characterized in that: The top of the first inner cavity (8) is symmetrically provided with solenoid valves (9) for inlet and outlet of oil, and the flow directions of the two solenoid valves (9) are opposite.

4. The electric drive support arm assembly structure for a new energy vehicle according to claim 3, characterized in that: A pressing plate (10) is slidably connected to the top of the inner side of the first inner cavity (8). The bottom of the pressing plate (10) abuts against a piezoelectric sheet (11). The bottom of the piezoelectric sheet (11) is connected to the bottom of the first inner cavity (8) through a first spring (12). The piezoelectric sheet (11) slides in a sealed fit with the inner wall of the first inner cavity (8).

5. The electric drive support arm assembly structure for a new energy vehicle according to claim 4, characterized in that: The electrical charge generated by the piezoelectric element (11) is stored in the battery (13). The battery (13) is located inside the left and right ends of the bracket (1). Feedback control units are located inside the left and right ends of the bracket (1). The battery (13) supplies power to the electromagnetic coil (14) to increase the magnetic force.

6. The electric drive support arm assembly structure for a new energy vehicle according to claim 1, characterized in that: The movable part (17) is configured as a "T" shaped structure, the ends of the movable part (17) are configured as rectangular structures, and the middle part of the movable part (17) is configured as a cylindrical structure.

7. The electric drive support arm assembly structure for a new energy vehicle according to claim 6, characterized in that: The screw (21) is driven by the spiral groove (20) and the protrusion (19) to form a rotating structure. The screw (21) drives the bracket (4) to move and pre-tighten the structure outside the fixed frame (3).

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