A new energy vehicle's tow arm

Abstract

The application belongs to the technical field of towing arms, and particularly relates to a towing arm of a new energy vehicle, which comprises a long supporting arm, a telescopic buffer column installed above the long supporting arm, a buffer assembly installed above the long supporting arm, a towing arm suspension installed in a vehicle body, and the long supporting arm is connected with the end of the towing arm suspension. The buffer telescopic part is designed to cover the outside of the top column. When the vehicle body vibrates, the vehicle coil spring is compressed downward, the length of the vehicle coil spring is shortened, the buffer telescopic part is pulled out, the inner wall of the buffer telescopic part is always at a certain distance from the outside of the top column during the telescoping, the upper end of the vehicle coil spring does not rub against the outside of the top column during the compression and recovery of the vehicle coil spring, the vehicle coil spring and the top column are not damaged, the compression and recovery of the vehicle coil spring are not affected without friction, and the buffering is not reduced.

Description

Technical Field

[0001] This invention belongs to the field of towing arms, specifically a towing arm for new energy vehicles. Background Technology

[0002] Trailing arm, also known as semi-independent suspension, is widely used in new energy vehicles due to its simple and practical structure, small footprint, and low manufacturing cost. When the vehicle body vibrates, the trailing arm's buffering structure mainly alleviates the vibration through the extension and retraction of the telescopic rod and the compression and recovery of the coil spring, thus playing a buffering role.

[0003] In traditional solutions, when a vehicle vibrates, the wheels move up and down with the uneven road surface, and the trailing arm connected to the wheels also moves accordingly. Since the other end of the trailing arm is connected to the vehicle body, this movement is transmitted to the vehicle body through a coil spring, causing the upper end of the coil spring to compress and recover to buffer the vibration of the vehicle body. During the compression and recovery process, the upper end of the traditional coil spring will rub against the vehicle body structure. This hard friction will damage both the coil spring and the vehicle body structure, shortening the service life of the buffer structure. Furthermore, the friction between the two will affect the lifting and lowering of the coil spring, reducing the buffering effect.

[0004] Therefore, the present invention provides a towing arm for new energy vehicles. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: the present invention provides a trailing arm for a new energy vehicle, including a long support arm and a telescopic buffer column installed above the long support arm. A fulcrum connector is installed on the side of the long support arm, and a buffer assembly is also installed above the long support arm. A trailing arm suspension is installed inside the vehicle body, and the long support arm is connected to the end of the trailing arm suspension. The buffer assembly includes a base column fixedly installed above the long support arm. A conical column and a chamfered ring are fixedly installed sequentially above the base column. A center column is fixedly installed above the chamfered ring. A top column is fixedly installed above the center column. The buffer assembly also includes a top connector and a buffer telescopic component installed below the top connector. A vehicle-grade helical spring is installed below the buffer telescopic component. The vehicle-grade helical spring is sleeved on the outside of the center column. The buffer telescopic component is a ring-shaped structure made of rubber, and the inner wall of the buffer telescopic component maintains a certain distance from the outer side of the top column.

[0007] Preferably, the telescopic buffer column includes a fixed column that is fixedly installed above the long support arm, and an outer sleeve column is sleeved on the outside of the fixed column.

[0008] Preferably, the buffer telescopic component includes a rubber ring 1 fixedly installed below the top connector, a first fixing ring fixedly installed below the rubber ring 1, a rubber ring 2 fixedly installed below the first fixing ring, a second fixing ring fixedly installed below the rubber ring 2, and a connecting ring fixedly installed below the second fixing ring.

[0009] Preferably, rubber ring one and rubber ring two are components made of the same structure, and the inner ring diameter of the first fixing ring and the second fixing ring is smaller than the inner ring diameter of rubber ring one and rubber ring two.

[0010] Preferably, the connecting ring has a movable ring groove and a limiting ring groove on the side facing the automotive coil spring. The movable ring groove and the limiting ring groove are connected, and the diameter of the movable ring groove is smaller than the diameter of the limiting ring groove.

[0011] Preferably, the upper end of the automotive coil spring is fixedly installed with a vertical column and a limiting column, the vertical column being movably installed inside the movable annular groove, and the limiting column being movably installed inside the limiting annular groove.

[0012] Preferably, a plurality of round beads are movably installed on the inner wall of the second fixing ring, and a plurality of round beads are also movably installed on the inner wall of the first fixing ring.

[0013] Preferably, the top connector has multiple first connecting grooves through its interior, the rubber ring one and the rubber ring two have multiple second connecting grooves through their interiors, and the first fixing ring has multiple third connecting grooves through its interior. All of the multiple first connecting grooves, second connecting grooves and third connecting grooves are located on the same vertical line.

[0014] Preferably, the rubber ring has an annular cavity inside, and multiple small helical springs are fixedly installed inside the annular cavity. The annular cavity is connected to multiple second communicating grooves.

[0015] Preferably, the diameter of the small helical spring is larger than the diameter of the second connecting groove, and the center of the small helical spring and the center of the corresponding second connecting groove are on the same vertical line.

[0016] The beneficial effects of this invention are as follows: 1. The towing arm of a new energy vehicle described in this invention utilizes a ring-shaped buffer telescopic component made of rubber, which covers the outer side of the top pillar. When the vehicle vibrates, the vehicle's coil spring is compressed downwards, shortening its length and pulling the buffer telescopic component outwards. During the extension and retraction of the buffer telescopic component, its inner wall always maintains a certain distance from the outer side of the top pillar. During the compression and recovery process of the vehicle's coil spring, the upper end of the coil spring does not rub against the outer side of the top pillar, preventing damage to the coil spring and the top pillar. Without friction, the compression and recovery process of the coil spring is not affected, thus preventing a reduction in buffering capacity.

[0017] 2. The towing arm of a new energy vehicle according to the present invention is connected to the lower side of the connecting ring via the lower end of the vehicle coil spring. When the vehicle coil spring is compressed downward as a whole, its upper end will pull the buffer telescopic component down, that is, rubber ring one and rubber ring two are stretched and deformed, and the first fixed ring, the second fixed ring and the connecting ring follow the downward movement. Rubber ring one and rubber ring two are components made of hard rubber. When rubber ring one and rubber ring two are stretched and deformed, the vehicle coil spring is compressed downward, which is equivalent to increasing the elastic coefficient of the vehicle coil spring as a whole, which can buffer greater vibrations.

[0018] 3. The towing arm of a new energy vehicle described in this invention involves multiple round beads contacting the outer surface of a top post. When rubber ring one and rubber ring two are stretched and deformed, the multiple round beads slide on the outer surface of the top post, thereby balancing the tension at the upper end of the vehicle coil spring. This allows the buffer telescopic component to stretch and lengthen as it is pulled by the vehicle coil spring, preventing uneven deformation and thus avoiding affecting the buffering effect. When the buffer telescopic component is stretched, the rolling of the multiple round beads facilitates the compression and recovery of the vehicle coil spring. When vehicle vibration occurs, the vehicle coil spring can be compressed downwards and recovered more quickly, thereby achieving a better buffering effect. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a three-dimensional view of the entire invention; Figure 2 This is a three-dimensional schematic diagram of the telescopic buffer column in this invention; Figure 3 This is a three-dimensional schematic diagram of the buffer component in this invention; Figure 4 This is a three-dimensional schematic diagram of the buffer telescopic component in this invention; Figure 5 This is a three-dimensional schematic diagram of the automotive helical spring of this invention; Figure 6This is a three-dimensional schematic diagram of the second fixing ring and the connecting ring in this invention; Figure 7 This is a three-dimensional schematic diagram of the rubber ring and the first fixing ring in this invention; Figure 8 This is a three-dimensional schematic diagram of the disassembled rubber ring in this invention; Figure 9 This is a side view of the rubber ring and the first fixing ring in this invention.

[0021] In the diagram: 1. Trailing arm suspension; 2. Telescopic buffer column; 21. Outer column; 22. Fixed column; 3. Long support arm; 4. Buffer assembly; 41. Bottom column; 42. Conical column; 43. Chamfered ring; 44. Center column; 5. Pivot connector; 6. Top connector; 61. First connecting groove; 7. Buffer telescopic component; 71. Rubber ring one; 711. Second connecting groove; 712. Annular cavity; 713. Small coil spring; 72. First fixed ring; 721. Third connecting groove; 73. Rubber ring two; 74. Second fixed ring; 741. Ball; 75. Connecting ring; 751. Movable ring groove; 752. Limiting ring groove; 8. Top column; 9. Automotive coil spring; 91. Vertical column; 92. Limiting column. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] Example 1: As Figure 1-3 As shown, a new energy vehicle trailing arm according to an embodiment of the present invention includes a long support arm 3 and a telescopic buffer column 2 installed above the long support arm 3. A fulcrum connector 5 is installed on the side of the long support arm 3, and a buffer assembly 4 is installed above the long support arm 3. A trailing arm suspension 1 is installed inside the vehicle body, and the long support arm 3 is connected to the end of the trailing arm suspension 1. The buffer assembly 4 includes a base column 41 fixedly installed above the long support arm 3. A conical column 42 and a chamfered ring 43 are fixedly installed on the base column 41 in sequence. A central column 44 is fixedly installed above the chamfered ring 43. A top column 8 is fixedly installed above the central column 44. The buffer assembly 4 also includes a top connector 6 and a buffer telescopic component 7 installed below the top connector 6. A vehicle coil spring 9 is installed below the buffer telescopic component 7. The vehicle coil spring 9 is sleeved on the outside of the central column 44. The buffer telescopic component 7 is a ring structure made of rubber, and the inner wall of the buffer telescopic component 7 maintains a certain distance from the outer side of the top column 8.

[0024] Specifically, the trailing arm suspension 1 is usually installed inside the vehicle body. Specifically, as an existing suspension type, the end of the trailing arm suspension 1 is usually connected to the wheel or axle. When the vehicle body vibrates, the wheel moves up and down with the uneven road surface, and the trailing arm connected to the wheel also moves accordingly. Since the other end of the trailing arm is connected to the wheel, the vehicle coil spring 9 is compressed. Under the influence of gravity, the compression force at the top of the vehicle coil spring 9 is relatively large. Therefore, in terms of appearance, the vehicle coil spring 9 is compressed downwards. At this time, the upper end of the vehicle coil spring 9 undergoes a compression recovery action to buffer the vibration of the vehicle body. In the existing technology, the compression recovery of the vehicle coil spring 9 serves as part of the buffering effect. At this time, the lower end of the vehicle coil spring 9 is still in contact with the outer side of the chamfered ring 43. In the traditional technology, when the upper end of the vehicle coil spring 9 compresses and recovers, it will contact the outer side of the top pillar 8. Friction occurs on both sides. Prolonged friction between the top post 8 and the automotive coil spring 9 can damage their bodies and affect the compression and recovery process of the coil spring 9. In this device, a ring-shaped buffer telescopic component 7 made of rubber is designed to cover the outside of the top post 8. When the automotive coil spring 9 is compressed downwards, its length shortens, pulling the buffer telescopic component 7 to extend. The buffer telescopic component 7 is ring-shaped, and its inner ring wall maintains a certain distance from the outside of the top post 8 during extension and retraction. During this process, the upper end of the automotive coil spring 9 does not rub against the outside of the top post 8, preventing damage to both the coil spring 9 and the top post 8. Without friction, the compression and recovery process of the automotive coil spring 9 is not affected, thus preventing a reduction in buffering capacity.

[0025] like Figure 2 As shown, the telescopic buffer column 2 includes a fixed column 22 fixedly installed above the long support arm 3, and an outer sleeve column 21 is sleeved on the outside of the fixed column 22.

[0026] Specifically, when the vehicle body vibrates, the wheels will move up and down with the unevenness of the road surface, and the trailing arm connected to the wheels will also move accordingly. Since the other end of the trailing arm is connected to the vehicle body, the vehicle coil spring 9 will be compressed, causing the vehicle coil spring 9 to perform a compression recovery action. At the same time, the outer sleeve column 21 will rise and fall outside the fixed column 22. By moving the outer sleeve column 21 up and down, that is, by the overall extension and retraction of the telescopic buffer column 2, the vibration is further buffered to avoid damage to the vehicle body.

[0027] like Figure 4As shown, the buffer telescopic component 7 includes a rubber ring 71 fixedly installed below the top connector 6, a first fixing ring 72 fixedly installed below the rubber ring 71, a second rubber ring 73 fixedly installed below the first fixing ring 72, a second fixing ring 74 fixedly installed below the second rubber ring 73, and a connecting ring 75 fixedly installed below the second fixing ring 74. The rubber ring 71 and the second rubber ring 73 are components made of the same structure, and the inner ring diameter of the first fixing ring 72 and the second fixing ring 74 is smaller than the inner ring diameter of the rubber ring 71 and the second rubber ring 73.

[0028] Specifically, the buffer telescopic component 7 includes a rubber ring 71, a first fixed ring 72, a rubber ring 73, a second fixed ring 74, and a connecting ring 75. The lower end of the vehicle coil spring 9 is connected to the lower side of the connecting ring 75. When the vehicle coil spring 9 is compressed downwards as a whole, its upper end will pull the buffer telescopic component 7 down, that is, the rubber ring 71 and the rubber ring 73 are stretched and deformed, and the first fixed ring 72, the second fixed ring 74, and the connecting ring 75 follow and descend. The rubber ring 71 and the rubber ring 73 are components made of hard rubber material. The rubber ring 71 and the rubber ring 73 can be natural rubber or synthetic rubber, such as styrene-butadiene rubber and ethylene propylene diene monomer rubber, which are common materials used for cushioning in vehicles. When the rubber ring 71 and the rubber ring 73 are stretched and deformed, the vehicle coil spring 9 is compressed downwards, which is equivalent to increasing the elastic coefficient of the vehicle coil spring 9 as a whole, and can buffer greater vibrations.

[0029] like Figure 5-6 As shown, the connecting ring 75 has a movable ring groove 751 and a limiting ring groove 752 on the side facing the vehicle coil spring 9. The movable ring groove 751 and the limiting ring groove 752 are connected. The diameter of the movable ring groove 751 is smaller than the diameter of the limiting ring groove 752. A vertical column 91 and a limiting column 92 are fixedly installed on the upper end of the vehicle coil spring 9. The vertical column 91 is movably installed inside the movable ring groove 751, and the limiting column 92 is movably installed inside the limiting ring groove 752.

[0030] Specifically, when the automotive coil spring 9 is compressed downwards, its overall length shortens, and its upper end experiences a certain displacement. At this time, the vertical post 91 slides inside the movable ring groove 751, and the limiting post 92 slides inside the limiting ring groove 752. The limiting post 92 acts as a limiting structure, allowing the upper end of the automotive coil spring 9 to slide inside the connecting ring 75, but the two cannot separate. Therefore, when the automotive coil spring 9 is compressed downwards, it pulls the connecting ring 75 downwards. When the vehicle body tilts, the automotive coil spring 9 will rotate. When compressed downwards, the vertical column 91 and the limiting column 92 will rotate a greater distance and move downwards. The upper end of the vehicle coil spring 9, which rotates a greater distance, will have a larger contact friction with the top column 8, thus aggravating the damage to both. In this device, the rotated and compressed vehicle coil spring 9 also stretches the buffer telescopic component 7, and at this time, the upper end of the vehicle coil spring 9 will not contact and rub against the top column 8. The design of this device will not affect the buffering when the vehicle body tilts and vibrates, and it still plays the role of avoiding friction between the vehicle coil spring 9 and the vehicle body structure.

[0031] like Figure 6 As shown, multiple round beads 741 are movably installed on the inner wall of the second fixing ring 74, and multiple round beads 741 are also movably installed on the inner wall of the first fixing ring 72.

[0032] Specifically, the outer surfaces of multiple beads 741 contact the outer side of the top post 8. When rubber ring 1 71 and rubber ring 2 73 are stretched and deformed, the multiple beads 741 slide on the outer surface of the top post 8, thereby balancing the tension at the upper end of the automotive coil spring 9. When the buffer telescopic component 7 is pulled by the automotive coil spring 9, the entire buffer telescopic component 7 will stretch and lengthen, avoiding uneven deformation of the buffer telescopic component 7, which would affect the buffering effect. When the buffer telescopic component 7 is stretched, the rolling of the multiple beads 741 is beneficial to the compression and recovery of the automotive coil spring 9. When the vehicle body vibrates, the automotive coil spring 9 can be compressed downward and recovered more quickly, thereby achieving a better buffering effect.

[0033] Example 2: Figure 7-9 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the top connector 6 has a plurality of first connecting grooves 61 through it, the rubber ring 1 71 and the rubber ring 2 73 have a plurality of second connecting grooves 711 through it, and the first fixing ring 72 has a plurality of third connecting grooves 721 through it. The plurality of first connecting grooves 61, second connecting grooves 711 and third connecting grooves 721 are all on the same vertical line.

[0034] The rubber ring 71 has an annular cavity 712 inside, and multiple small helical springs 713 are fixedly installed inside the annular cavity 712. The annular cavity 712 is connected to multiple second connecting grooves 711. The diameter of the small helical springs 713 is larger than the diameter of the second connecting grooves 711, and the center of the small helical springs 713 and the center of the corresponding second connecting grooves 711 are on the same vertical line.

[0035] Specifically, when rubber ring 1 71 and rubber ring 2 73 are stretched and deformed, the space of their internal annular cavity 712 increases. At this time, multiple small helical springs 713 are stretched, and the internal space of the annular cavity 712 increases. Air is drawn to the outside through the third connecting groove 721, the second connecting groove 711, and the first connecting groove 61. During the continuous vibration of the vehicle body, the vehicle helical spring 9 will continuously compress and recover, that is, rubber ring 1 71 and rubber ring 2 73 will continuously stretch and deform and return to their original shape. When rubber ring 1 71 and rubber ring 2 73 are stretched, their internal annular cavity 712 will draw in air. When rubber ring 1 71 and rubber ring 2 73 return to their original shape, their internal annular cavity 712 will release the air. The gas inside the annular cavity 712 is released along the third connecting groove 721, the second connecting groove 711, and the first connecting groove 61. When the buffer telescopic component 7 is used to buffer the vibration of the vehicle body, in real life, the trailing arm suspension 1 is connected to the wheel. In order to ensure the normal rotation of the wheel, a precision structure such as bearings is designed. Therefore, a protective shell-like structure is set at the connection position between the trailing arm suspension 1 and the wheel to prevent external gravel and sewage from damaging the precision structure during vehicle operation. The buffer structure of the trailing arm suspension 1 is also a precision structure that is protected. Therefore, the continuous movement of gas will have a certain heat dissipation effect on the precision structure inside the vehicle body and the protective shell. Inside the annular cavity 712, the small coil spring 713 is set in the middle position of the corresponding second connecting groove 711. When the small coil spring 713 is compressed and restored, it will immediately drive the second connecting groove 711 at the deformation position of the rubber ring 71 to return to its original state, thereby accelerating the flow rate of gas.

[0036] Working principle: The trailing arm suspension 1 is usually installed inside the vehicle body. When the vehicle body vibrates, the wheels move up and down with the uneven road surface, and the trailing arm connected to the wheels also moves accordingly. Since the other end of the trailing arm is connected to the vehicle body, the vehicle coil spring 9 is compressed downwards. At this time, the upper end of the vehicle coil spring 9 undergoes a compression recovery action to buffer the vibration of the vehicle body. At this time, the lower end of the vehicle coil spring 9 is still in contact with the outer side of the chamfer ring 43. In traditional technology, the upper end of the vehicle coil spring 9 is compressed... During compression and recovery, friction occurs between the spring and the outer side of the top post 8. Prolonged friction between the top post 8 and the automotive coil spring 9 can cause damage to both, and it also affects the compression and recovery process of the coil spring 9. In this device, a ring-shaped buffer telescopic component 7 made of rubber is designed to cover the outer side of the top post 8. When the automotive coil spring 9 is compressed downwards, its length shortens, which in turn pulls the buffer telescopic component 7 to extend. The buffer telescopic component 7 is a ring-shaped structure. During its extension and contraction... When the inner wall of the coil spring 9 is always at a certain distance from the outer side of the top post 8, the upper end of the coil spring 9 does not rub against the outer side of the top post 8 during the compression and recovery process, thus preventing damage to the coil spring 9 and the top post 8. Without friction, the compression and recovery process of the coil spring 9 will not be affected, and therefore, the cushioning will not be reduced. The cushioning telescopic component 7 includes a rubber ring 71, a first fixing ring 72, a second rubber ring 73, a second fixing ring 74, and a connecting ring 75. The lower end of the coil spring 9 is connected to... The connecting ring 75 is connected to the lower side. When the entire vehicle coil spring 9 is compressed downward, its upper end will pull the buffer telescopic component 7 down, that is, the rubber ring 1 71 and the rubber ring 2 73 are stretched and deformed. The first fixed ring 72, the second fixed ring 74 and the connecting ring 75 follow and fall down. The rubber ring 1 71 and the rubber ring 2 73 are components made of hard rubber. When the rubber ring 1 71 and the rubber ring 2 73 are stretched and deformed, the vehicle coil spring 9 is compressed downward, which is equivalent to increasing the elastic coefficient of the vehicle coil spring 9 as a whole, which can buffer greater vibrations.

[0037] When rubber ring 1 71 and rubber ring 2 73 are stretched and deformed, the space of their internal annular cavity 712 will increase. At this time, multiple small helical springs 713 are stretched, and the internal space of the annular cavity 712 increases. Air will be drawn to the outside through the third connecting groove 721, the second connecting groove 711, and the first connecting groove 61. During the continuous vibration of the vehicle body, the vehicle helical spring 9 will continuously compress and recover, that is, rubber ring 1 71 and rubber ring 2 73 will continuously stretch and deform and return to their original shape. When rubber ring 1 71 and rubber ring 2 73 are stretched, their internal annular cavity 712 will draw in air. When the second ring 73 returns to its original state, the annular cavity 712 inside it will release the air. The gas inside the annular cavity 712 is released to the outside along the third connecting groove 721, the second connecting groove 711 and the first connecting groove 61. When the buffer telescopic member 7 is used to buffer the vibration of the vehicle body, the continuous movement of the gas will have a certain heat dissipation effect on the vehicle body. Inside the annular cavity 712, the small helical spring 713 is set in the middle position of the corresponding second connecting groove 711. When the small helical spring 713 is compressed and restored, it will immediately drive the second connecting groove 711 at the deformation position of the rubber ring 71 to return to its original state, thereby accelerating the flow rate of the gas.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A trailing arm for a new energy vehicle, comprising a long support arm (3) and a telescopic buffer column (2) mounted above the long support arm (3), wherein a fulcrum connector (5) is mounted on the side of the long support arm (3), characterized in that: A buffer assembly (4) is also installed above the long support arm (3), and a trailing arm suspension (1) is installed inside the vehicle body. The long support arm (3) is connected to the end of the trailing arm suspension (1). The buffer assembly (4) includes a base column (41) fixedly installed above the long support arm (3), a conical column (42) and a chamfered ring (43) are fixedly installed on the base column (41) in sequence, a center column (44) is fixedly installed on the chamfered ring (43), and a top column (8) is fixedly installed on the center column (44). The buffer assembly (4) also includes a top connector (6) and a buffer telescopic component (7) installed below the top connector (6). A vehicle coil spring (9) is installed below the buffer telescopic component (7). The vehicle coil spring (9) is sleeved on the outside of the center column (44). The buffer telescopic component (7) is a ring structure made of rubber, and the inner wall of the buffer telescopic component (7) maintains a certain distance from the outside of the top column (8). The buffer telescopic component (7) includes a rubber ring one (71) fixedly installed below the top connector (6), a first fixing ring (72) fixedly installed below the rubber ring one (71), a rubber ring two (73) fixedly installed below the first fixing ring (72), a second fixing ring (74) fixedly installed below the second fixing ring (73), and a connecting ring (75) fixedly installed below the second fixing ring (74). The connecting ring (75) has a movable ring groove (751) and a limiting ring groove (752) on the side facing the vehicle coil spring (9). The movable ring groove (751) and the limiting ring groove (752) are connected. The diameter of the movable ring groove (751) is smaller than the diameter of the limiting ring groove (752). The upper end of the vehicle coil spring (9) is fixedly installed with a vertical column (91) and a limiting column (92). The vertical column (91) is movably installed inside the movable ring groove (751), and the limiting column (92) is movably installed inside the limiting ring groove (752).

2. The towing arm for a new energy vehicle according to claim 1, characterized in that: The telescopic buffer column (2) includes a fixed column (22) fixedly installed above the long support arm (3), and an outer column (21) is sleeved on the outside of the fixed column (22).

3. The towing arm for a new energy vehicle according to claim 1, characterized in that: The first rubber ring (71) and the second rubber ring (73) are components made of the same structure. The inner ring diameter of the first fixing ring (72) and the second fixing ring (74) is smaller than the inner ring diameter of the first rubber ring (71) and the second rubber ring (73).

4. The towing arm for a new energy vehicle according to claim 1, characterized in that: Multiple beads (741) are movably installed on the inner wall of the second fixing ring (74), and multiple beads (741) are also movably installed on the inner wall of the first fixing ring (72).

5. The towing arm for a new energy vehicle according to claim 1, characterized in that: The top connector (6) has multiple first connecting grooves (61) through its interior, the rubber ring one (71) and the rubber ring two (73) have multiple second connecting grooves (711) through their interiors, and the first fixing ring (72) has multiple third connecting grooves (721) through its interior. All of the multiple first connecting grooves (61), second connecting grooves (711) and third connecting grooves (721) are on the same vertical line.

6. The towing arm for a new energy vehicle according to claim 5, characterized in that: The rubber ring (71) has an annular cavity (712) inside, and multiple small helical springs (713) are fixedly installed inside the annular cavity (712). The annular cavity (712) is connected to multiple second connecting grooves (711).

7. The towing arm for a new energy vehicle according to claim 6, characterized in that: The diameter of the small helical spring (713) is larger than the diameter of the second connecting groove (711), and the center of the small helical spring (713) and the center of the corresponding second connecting groove (711) are on the same vertical line.

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