Electrically-driven corbel assembly structure of new energy automobile

Abstract

The invention discloses a new energy automobile electric drive corbel assembly structure, and relates to the related field of new energy automobiles, the new energy automobile electric drive corbel assembly structure comprises a bracket, the two sides of the bracket are connected with a fixing frame through a connecting frame, the top of the fixing frame is sleeved with a support, piston rods are symmetrically arranged at the top of the bracket, and the tops of the piston rods are slidably connected to the top of a cylinder body; buffer adjusting assemblies are arranged on the inner sides of the left end and the right end of the bracket, and a pre-tightening force adjusting assembly is arranged in the fixing frame. According to the new energy automobile electric drive corbel assembly structure, in the using process, when an automobile bumps during running, the stress sensor of the connecting component and the displacement sensor of the buffering component feed back relevant information to the feedback control unit, and after the feedback control unit judges the working condition and the assembly state, the corbel assembly is started. The damping force of the piston rod and the cylinder body and the pre-tightening force between the fixing frame and the support are cooperatively adjusted and adjusted by controlling the electric drive, so that the piston rod and the cylinder body cooperatively resist impact force or share force, and the bumping resistance and the deformation resistance are improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to new energy vehicles, and specifically to an electric drive support arm assembly structure for a new energy vehicle. Background Art

[0002] The electric drive arm assembly structure (front suspension bracket) of new energy vehicles is a key component of the vehicle. It is the core load-bearing component connecting the front suspension, electric drive system, and chassis. It must simultaneously withstand the weight of the electric drive system, the torque of power transmission, and the impact load of road bumps. Existing electric drive arm assemblies have defects: traditional steel or aluminum alloy welded structures are prone to stress concentration under high-frequency impact, resulting in deformation or cracks, and the rigid connection design cannot effectively absorb road vibrations, which not only affects driving comfort, but also aggravates the vibration fatigue of the electric drive system and battery. During use, in the electric drive arm assembly, the connecting components between the vehicle body and the arm and the buffer components between the 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 buffering force and connection stiffness, resulting in poor anti-bump and anti-deformation effects, affecting the driving experience and vehicle service life. Summary of the Invention

[0003] The purpose of the present invention is to provide an electric drive support arm assembly structure for new energy vehicles to solve the problem of the existing electric drive support arm assembly structure for new energy vehicles proposed in the above background technology. During use, the rigid connection design cannot effectively absorb road vibrations. 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 buffering force and connection stiffness, resulting in poor anti-bump and anti-deformation effects, affecting the driving experience and vehicle service life.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a new energy vehicle electric drive support arm assembly structure, comprising a bracket, a connecting frame symmetrically connected to the two sides of the bracket, a fixing frame provided on the connecting frame, a bracket sleeved on the top of the fixing frame, the top of the bracket being fixedly connected to the bottom of the vehicle frame, piston rods symmetrically provided on the tops of the left and right ends of the bracket, the tops of the piston rods being slidably connected to the tops of the cylinders, the tops of the cylinders being fixedly connected to the bottom of the vehicle frame, and coil springs being provided on the outsides of the piston rods and the cylinders; A displacement sensor is installed on the piston rod, and a buffer adjustment assembly is provided on the inner side of the left and right ends of the bracket, and the buffer adjustment assembly adjusts the use state of the piston rod and the cylinder body through the feedback of the displacement sensor to buffer the bump impact; A stress sensor is provided on the side of the fixing frame opposite to the bracket, and a preload adjustment component is provided inside the fixing frame. The preload adjustment component cooperates with the buffer adjustment mechanism to improve the overall anti-bumping and anti-deformation capabilities of the support arm to ensure smooth operation of the vehicle body.

[0005] Furthermore, the buffer adjustment component includes a magnetic fluid filled between the piston rod and the cylinder body, and an electromagnetic coil is wound around the outer side of the top of the piston rod. The magnetic force of the electromagnetic coil affects the flow state of the magnetic fluid. In a weak magnetic field, the magnetic fluid is a liquid. After the magnetic field is enhanced, the magnetic fluid takes on a chain-like structure that hinders the flow of the liquid.

[0006] Furthermore, the buffer adjustment component 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 oil inlet and outlet, and the flow directions of the two solenoid valves are opposite.

[0007] Furthermore, an extrusion plate is slidably connected to the inner top of the first inner cavity, and the bottom of the extrusion plate is in contact with a piezoelectric piece. The bottom of the piezoelectric piece is connected to the bottom of the first inner cavity through a first spring, and the piezoelectric piece slides in a sealed fit with the inner wall of the first inner cavity.

[0008] Furthermore, the electricity generated by the piezoelectric sheet is stored in a battery, which is arranged inside the left and right ends of the bracket. Feedback control units are arranged inside the left and right ends of the bracket. The battery supplies power to the electromagnetic coil to increase the magnetic force.

[0009] Furthermore, the preload adjustment assembly includes a second inner cavity opened inside the fixed frame, the second inner cavity is connected to the inner bottom of the first inner cavity through a connecting pipe, the lower part of the first inner cavity is filled with oil, and a movable part is slidably connected in the second inner cavity, and a second spring is installed between the movable part and the second inner cavity.

[0010] Furthermore, the movable part is configured as a T-shaped structure as a whole, the end portion of the movable part is configured as a rectangular structure, and the middle portion of the movable part is configured as a cylindrical structure.

[0011] Furthermore, the outer end of the movable part is connected to the inner middle part of the screw, the screw is rotatably connected to the outside of the fixed frame, the outer side of the screw is threadedly connected to the 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.

[0012] Furthermore, a protrusion is fixedly installed on the outer side of the middle part of the movable part, and the protrusion is slidably connected to the spiral groove, and the spiral groove is opened on the inner wall of the screw.

[0013] Furthermore, the screw drives the screw through the spiral groove and the protrusion to form a rotating structure, and the screw drives the bracket to move outside the fixing frame to form a pre-tightening structure.

[0014] Compared with the prior art, the present invention has the following beneficial effects: During use, when the electric drive support arm assembly structure of this new energy vehicle encounters bumps during driving, the stress sensors of the connecting components and the displacement sensors of the buffer components feed back relevant information to the feedback control unit. After judging the working conditions and component status, the feedback control unit controls the electric drive collaborative adjustment mechanism to adjust the damping force of the magnetorheological damper (piston rod and cylinder body) and the preload force of the connecting components (fixing frame and bracket), so that the two can work together to resist impact force or share force, thereby improving the anti-bump and anti-deformation capabilities.

[0015] Furthermore, when the vehicle encounters bumps during driving, the piston rod slides relative to the cylinder body, 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, and the solenoid valve injects oil into the first inner cavity. The pressure plate moves downward to squeeze the first spring. The electrical energy generated by the piezoelectric piece after being compressed is stored in the battery to power the electromagnetic coil. The magnetic force of the electromagnetic coil is enhanced, and the magnetic fluid forms a chain structure to hinder the flow, thereby increasing the damping force and synergizing with the coil spring to absorb impact energy.

[0016] Furthermore, the oil in the lower part of the first inner cavity flows into the second inner cavity along with the buffering 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, drive the screw to rotate, and drive the bracket to extend outside the fixed frame, increasing the connection preload and strengthening the overall rigidity. The preload adjustment and buffer damping adjustment are carried out simultaneously. When the stress is strong, the preload is increased to resist deformation. When the stress is weak, the preload is relaxed to cooperate with the buffer to avoid excessive rigidity exacerbating bumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the overall rear view structure of the present invention; Figure 3 This is a schematic diagram of the structure of the bracket, connecting frame, support, piston rod and cylinder body of the present invention; Figure 4 This is a schematic diagram of the front cross-sectional structure of the bracket end of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the cylinder body of the present invention; Figure 6 This is a schematic diagram of the structure of the piston rod, electromagnetic coil and displacement sensor of the present invention; Figure 7 This is a schematic diagram of the connection structure of the connecting frame, the fixing frame and the bracket of the present invention; Figure 8 This is a schematic diagram of the front cross-sectional structure of the stent of the present invention; Figure 9 This is a schematic diagram of the internal explosion structure of the fixing frame of the present invention; Figure 10 It is a schematic cross-sectional view of the connection between the movable frame and the screw rod of the present invention.

[0018] In the figure: 1. bracket; 2. connecting frame; 3. fixing frame; 4. bracket; 5. piston rod; 6. cylinder body; 7. coil 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. movable part; 18. second spring; 19. bump; 20. spiral groove; 21. screw; 22. stress sensor. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1 - Figure 7 The present invention provides the following technical solutions: an electric drive support arm assembly structure for a new energy vehicle, comprising a bracket 1, a connecting frame 2 symmetrically connected to the two sides of the bracket 1 for rotation, a fixing frame 3 is provided on the connecting frame 2, a bracket 4 is sleeved on the top of the fixing frame 3, and the top of the bracket 4 is fixedly connected to the bottom of the frame. Piston rods 5 are symmetrically provided on the tops of the left and right ends of the bracket 1, the top of the piston rod 5 is slidably connected to the top of the cylinder 6, and the top of the cylinder 6 is fixedly connected to the bottom of the frame. A coil spring 7 is provided on the outside of the piston rod 5 and the cylinder 6, and a displacement sensor 15 is installed on the piston rod 5. A buffer adjustment component is provided on the inner sides of the left and right ends of the bracket 1, and the buffer adjustment component adjusts the use state of the piston rod 5 and the cylinder 6 through the feedback amount of the displacement sensor 15 to buffer the bump impact. A stress sensor 22 is provided on the side of the fixing frame 3 opposite to the bracket 4, and a preload adjustment component is provided inside the fixing frame 3, and the preload adjustment component cooperates with the buffer adjustment mechanism to improve the overall anti-bumping and anti-deformation ability of the support arm to ensure smooth operation of the vehicle body.

[0021] like Figure 1 - Figure 7As shown, when in use, the bracket 1 is used as the bearing basis, and the connecting frames 2, the fixing frames 3 and the bracket 4 on both sides form a connection system, and the piston rod 5, the cylinder body 6 and the coil spring 7 form a buffer system. The displacement sensor 15 is used as the adjustment basis, and the stress sensor 22 detects the stress change and cooperates. The buffer adjustment component adjusts the damping force through displacement feedback to absorb bump impact, and the preload adjustment component adjusts the connection stiffness to resist deformation through stress feedback. The two act synchronously under the coordination of the feedback control unit, and the buffer component and the preload component form a closed loop of "impact absorption-stiffness adaptation". When bumping, the buffer component quickly absorbs energy, and the preload component synchronously improves the connection stiffness. When the road conditions are smooth, the two automatically reset to balance comfort and structural stability, and finally achieve the coordinated improvement of the anti-bumping and anti-deformation capabilities of the support arm assembly under complex road conditions, to ensure the smooth operation of the vehicle body.

[0022] Example 2: On the basis of the first embodiment, the buffer adjustment component is also disclosed to dynamically adapt the bump intensity through magnetic fluid damping. Please refer to Figure 1 - Figure 6 As shown, its specific structure is as follows: the buffer adjustment component includes a magnetic fluid filled between the piston rod 5 and the cylinder body 6, and an electromagnetic coil 14 is wound around the outer side of the top 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. After the magnetic field is enhanced, the magnetic fluid presents a chain structure that hinders the flow of the liquid. The buffer adjustment component also includes a first inner cavity 8 opened inside the left and right ends of the bracket 1, and the top of the first inner cavity 8 is symmetrically provided with electromagnetic valves 9 for oil inlet and outlet, and the flow directions of the two solenoid valves 9 are opposite.

[0023] Figure 1 - Figure 6 As shown, during use, when the vehicle encounters bumps during driving, the piston rod 5 slides up and down relative to the cylinder body 6, and 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 according to 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 downward.

[0024] like Figure 5 - Figure 6 As shown, the inner top of the first inner cavity 8 is slidably connected with an extrusion plate 10, and the bottom of the extrusion plate 10 is in contact with a piezoelectric piece 11. The bottom of the piezoelectric piece 11 is connected to the bottom of the first inner cavity 8 through a first spring 12. The piezoelectric piece 11 slides in a sealed fit with the inner wall of the first inner cavity 8. The electricity generated by the piezoelectric piece 11 is stored in a battery 13. The battery 13 is arranged inside the left and right ends of the bracket 1. Feedback control units are arranged 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.

[0025] During use, the extrusion plates 10 in the first inner cavities 8 on both sides of the bracket 1 squeeze the piezoelectric sheet 11 as the bumps occur. The piezoelectric sheet 11 moves downward and squeezes the first spring 12. The electrical energy generated by the piezoelectric sheet 11 after being compressed is stored in the battery 13 to power the electromagnetic coil 14; the solenoid valve 9 assists in stabilizing the action of the buffer assembly by controlling the flow direction of the oil in the first inner cavity 8. During weak bumps, the magnetic force of the electromagnetic coil 14 is weak, the magnetic fluid is in liquid state, and the damping force is small. At this time, only the coil spring 7 plays a buffering role. During strong bumps, the magnetic force of the electromagnetic coil 14 is enhanced, and the magnetic fluid forms a chain structure to hinder the flow, the damping force is increased, and it cooperates with the coil spring 7 to absorb the impact energy.

[0026] Example 3: On the basis of the second embodiment, the preload adjustment component is disclosed to adjust the connection stiffness through mechanical transmission, and cooperate with the buffer component to resist deformation. Figure 1 - Figure 3 and Figure 8 - Figure 10 As shown, its specific structure is as follows: the preload adjustment component includes a second inner cavity 16 opened inside the fixed frame 3, the second inner cavity 16 is connected to the inner bottom of the first inner cavity 8 through a connecting pipe, the lower part of the first inner cavity 8 is filled with oil, and a movable part 17 is slidably connected in the second inner cavity 16, and a second spring 18 is installed between the movable part 17 and the second inner cavity 16.

[0027] like Figure 8 - Figure 10 As shown, during use, when the connection between the fixing frame 3 and the bracket 4 is subjected to a bumpy force, the stress sensor 22 detects the stress change, and the signal is transmitted 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 buffering action, pushing the movable part 17 to stretch the second spring 18.

[0028] like Figure 9 - Figure 10 As shown, the movable part 17 is set as a "T"-shaped structure as a whole, the end of the movable part 17 is set as a rectangular structure, the middle part of the movable part 17 is set as a cylindrical structure, the outer end of the movable part 17 is connected to the inner middle part 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 outer side of the fixed frame 3 is slidably connected to the left inner side of the bracket 4, a protrusion 19 is fixedly installed on the outer side of the middle of the movable part 17, the protrusion 19 is slidably connected to the spiral groove 20, the spiral groove 20 is opened on the inner wall of the screw 21, the screw 21 drives the screw 21 through the spiral groove 20 and the protrusion 19 to form a rotating structure, and the screw 21 drives the bracket 4 to move the pre-tightening structure outside the fixed frame 3.

[0029] like Figure 9 - Figure 10As shown, during use, after the movable part 17 moves, it will drive the protrusion 19 to slide along the spiral groove 20 on the inner wall of the screw 21, drive the screw 21 to rotate, and drive the bracket 4 to extend outside the fixed frame 3, thereby increasing the connection preload force and strengthening the overall rigidity. The preload force adjustment and the buffer damping adjustment are carried out simultaneously. When the stress is strong, the preload force is increased to resist deformation. When the stress is weak, the preload force is relaxed to cooperate with the buffer, so as to avoid excessive rigidity exacerbating bumps.

[0030] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new energy vehicle electric drive support arm assembly structure, comprising a bracket (1), a connecting frame (2) symmetrically 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) being symmetrically provided on the tops of the left and right ends of the bracket (1), the top of the piston rod (5) being slidably connected to the top of a cylinder (6), the top of the cylinder (6) being fixedly connected to the bottom of the vehicle frame, and a coil spring (7) being provided on the outside of the piston rod (5) and the cylinder (6); Its characteristics are: A displacement sensor (15) is installed on the piston rod (5), and buffer adjustment components are provided on the inner sides of the left and right ends of the bracket (1). The buffer adjustment components adjust the use state of the piston rod (5) and the cylinder body (6) through the feedback amount of the displacement sensor (15) to buffer the bump impact. A stress sensor (22) is provided on one side of the fixing frame (3) relative to the bracket (4), and a preload adjustment component is provided inside the fixing frame (3). The preload adjustment component cooperates with the buffer adjustment mechanism to enhance the overall anti-bumping and anti-deformation capabilities of the supporting arm, thereby ensuring the smooth operation of the vehicle body.

2. The electric drive support arm assembly structure of 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 body (6), and an electromagnetic coil (14) is wound around the outer side of the top 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 takes on a chain-like structure that hinders the flow of the liquid.

3. The electric drive support arm assembly structure of a new energy vehicle according to claim 2, characterized in that: The buffer adjustment assembly further comprises a first inner cavity (8) opened inside the left and right ends of the bracket (1), and electromagnetic valves (9) for oil inlet and outlet are symmetrically arranged on the top of the first inner cavity (8), and the flow directions of the two electromagnetic valves (9) are opposite.

4. The electric drive support arm assembly structure of a new energy vehicle according to claim 3, characterized in that: The top of the inner side of the first inner cavity (8) is slidably connected to an extrusion plate (10), the bottom of the extrusion plate (10) is in contact with a piezoelectric piece (11), the bottom of the piezoelectric piece (11) is connected to the bottom of the first inner cavity (8) via a first spring (12), and the piezoelectric piece (11) is sealed and fitted with the inner wall of the first inner cavity (8) and slides.

5. The electric drive support arm assembly structure of a new energy vehicle according to claim 4, characterized in that: The electricity generated by the piezoelectric sheet (11) is stored in a battery (13). The battery (13) is arranged inside the left and right ends of the bracket (1). Feedback control units are arranged 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 of a new energy vehicle according to claim 5, characterized in that: The preload force adjustment assembly includes a second inner cavity (16) opened inside the fixing frame (3), the second inner cavity (16) is connected to the inner bottom 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), and a second spring (18) is installed between the movable part (17) and the second inner cavity (16).

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

8. The electric drive support arm assembly structure of a new energy vehicle according to claim 7, characterized in that: The outer end of the movable member (17) is connected to the inner middle portion of the screw (21), the screw (21) is rotatably connected to the outside of the fixing frame (3), the outer side of the screw (21) is threadedly connected to the bracket (4), the fixing frame (3) is configured as a rectangular structure, and the right outer side of the fixing frame (3) is slidably connected to the left inner side of the bracket (4).

9. The electric drive support arm assembly structure of a new energy vehicle according to claim 8, characterized in that: A protrusion (19) is fixedly mounted on the outer side of the middle portion of the movable member (17), and the protrusion (19) is slidably connected to a spiral groove (20), which is formed on the inner wall of the screw (21).

10. The electric drive support arm assembly structure of a new energy vehicle according to claim 9, characterized in that: The screw (21) drives the screw (21) through the spiral groove (20) and the protrusion (19) to form a rotating structure, and the screw (21) drives the bracket (4) to move the pre-tightening structure outside the fixing frame (3).

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