Limiting suspension device of electric vehicle

Abstract

The utility model belongs to the field of vehicle body suspension, and provides an electric vehicle limiting suspension device which comprises an axle, wheels arranged on the edge portions of the two sides of the axle, a fixing piece fixedly installed on the outer surface of the axle and close to the wheels, a plate spring fixedly installed on the top of the fixing piece, and a supporting bottom frame arranged on the upper surface of the axle and located above the plate spring. A supporting assembly is arranged in the middle of the top end of the plate spring and used for stably supporting the supporting bottom frame, a buffering mechanism is further arranged on one side edge of the supporting bottom frame and used for buffering and supporting the compartment, the buffering mechanism comprises a fixing groove, the fixing groove is formed in one side edge of the supporting bottom frame, and supporting shafts are installed in the fixing groove side by side. The supporting rubber piers are arranged at the top ends of the plate springs and fixed to the connecting plates at the bottom end of the supporting bottom frame through the iron plates, the weight of a carriage can be effectively borne, a stable supporting foundation is provided for the whole suspension device, and structural damage caused by uneven bearing is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle suspension, specifically an electric vehicle limit suspension device. Background Technology

[0002] The suspension of an electric vehicle is an important component that connects the frame and wheels of the vehicle. Its main function is to buffer the vibration and impact caused by uneven road surfaces, ensuring the stability and comfort of the vehicle, while also ensuring good contact between the wheels and the ground to maintain the vehicle's handling performance.

[0003] However, existing electric vehicle suspensions have certain shortcomings in supporting the passenger compartment. When the vehicle encounters bumps, speed bumps, or other impacts during operation, the passenger compartment will shift and sway relative to the frame due to inertia, resulting in a large impact force between the passenger compartment and the frame. This repeated impact force may cause fatigue damage, deformation, or even cracking at the connection points between the passenger compartment and the frame, as well as related structural components. Moreover, the damage caused by the impact force will gradually accumulate with the increase in vehicle usage time and mileage, not only reducing the service life of the passenger compartment and frame, but also causing the overall support effect of the electric vehicle suspension on the passenger compartment to deteriorate, affecting the vehicle's driving stability and safety, and increasing maintenance costs and frequency. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an electric vehicle limit suspension device to solve problems such as impact damage between the vehicle body and the frame in the prior art.

[0005] An electric vehicle limiting suspension device includes an axle, with wheels provided on both sides of the axle. A fixing member is fixedly installed on the outer surface of the axle near the wheel. A leaf spring is fixedly installed on the top of the fixing member. A support frame is provided on the upper surface of the axle above the leaf spring. A support component is provided at the middle of the top of the leaf spring for stable support of the support frame.

[0006] A buffer mechanism is also provided on one side of the support base frame for cushioning and supporting the carriage.

[0007] The buffer mechanism includes a fixing groove, which is located on one side of the support base. A support shaft is installed in parallel inside the fixing groove. A ball bearing wheel is rotatably installed on one side of the outer surface of the support shaft. A connecting structure is also provided between the leaf spring and the support base.

[0008] Preferably, the support assembly includes a fixed support plate, which is fixedly installed at the middle of the top of the leaf spring, and a support bolster is provided at the middle of the top of the fixed support plate.

[0009] Preferably, the connecting structure includes a first connecting shaft, which is rotatably mounted on one side of the support base near the ball bearing wheel. A second connecting shaft is rotatably mounted on one side of the upper surface of the leaf spring via a bearing support. Movable support plates are installed on both the front and rear ends of the first and second connecting shafts.

[0010] Preferably, a fixing hole is provided on the other side of the support base frame opposite to the fixing groove, and a positioning screw is inserted through the fixing hole and into the carriage on one side of the support base frame, and a nut is sleeved on one side of the outer surface of the positioning screw.

[0011] Preferably, a connecting plate is fixedly installed at the bottom end of the support base and at the corresponding position of the support block, and the support block and the connecting plate are connected to each other.

[0012] Preferably, the number of ball bearing rollers inside a single fixed groove is two, the volume of the ball bearing rollers is smaller than the internal volume of the fixed groove, and the fixed groove and the ball bearing rollers are mutually compatible.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This utility model, by setting a supporting rubber block at the top of the leaf spring and fixing it to the connecting plate at the bottom of the support base with an iron plate, can effectively bear the weight of the carriage, provide a stable support foundation for the entire suspension device, and reduce structural damage caused by uneven load.

[0015] 2. This utility model provides a buffer mechanism consisting of a fixed groove, a support shaft, and ball bearing wheels on one side of the support base. When vibrations and impacts occur during vehicle operation, the two ball bearing wheels can roll within the fixed groove, effectively buffering the impact force between the car body and the frame, reducing damage to the car body and frame, and improving ride comfort.

[0016] 3. The connection structure of this utility model adopts a front static connection and a rear soft connection through a first connecting shaft, a second connecting shaft and a movable support plate, so that the suspension device can flexibly deform when dealing with road bumps, absorb more vibration energy, reduce the vibration transmitted to the passenger compartment, and thus increase the ride comfort. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the leaf spring in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the ball bearing roller in this utility model;

[0020] Figure 4This is a schematic diagram of the supporting rubber block in this utility model.

[0021] In the picture:

[0022] 1. Axle; 2. Wheel; 3. Fixing component; 4. Leaf spring; 5. Fixed support plate; 6. Supporting rubber block; 7. Connecting plate; 8. Support base frame; 9. Fixing groove; 10. Support shaft; 11. Ball bearing rubber wheel; 12. Positioning screw; 13. No. 1 connecting shaft; 14. No. 2 connecting shaft; 15. Movable support plate. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] Example 1:

[0025] As attached Figure 1 To be continued Figure 4 As shown:

[0026] This utility model provides an electric vehicle limiting suspension device, including an axle 1, wheels 2 are provided on both sides of the axle 1, a fixing member 3 is fixedly installed on the outer surface of the axle 1 near the wheel 2, a leaf spring 4 is fixedly installed on the top of the fixing member 3, a support base 8 is provided on the upper surface of the axle 1 above the leaf spring 4, and a support component is provided at the top center of the leaf spring 4 for stable support of the support base 8.

[0027] A buffer mechanism is also provided on one side of the support frame 8 to provide buffer support for the carriage;

[0028] The buffer mechanism includes a fixed groove 9, which is located on one side of the support base 8. A support shaft 10 is installed in parallel inside the fixed groove 9. A ball bearing wheel 11 is rotatably installed on one side of the outer surface of the support shaft 10. There are two ball bearing wheels 11 inside a single fixed groove 9. The volume of the ball bearing wheel 11 is smaller than the internal volume of the fixed groove 9. The fixed groove 9 and the ball bearing wheel 11 are mutually compatible. A connecting structure is also provided between the leaf spring 4 and the support base 8.

[0029] As can be seen from the above, the axle 1, as the basic support component of the entire suspension device, is connected to the leaf spring 4 through the fixing component 3, providing a connection base for the device to the wheel 2. The leaf spring 4, as an elastic element, can initially buffer the impact force from the road surface during vehicle operation. The support frame 8 is connected to the leaf spring 4 through the support component. At the same time, the buffer mechanism on one side, namely the structure composed of the fixing groove 9, the support shaft 10 and the ball bearing wheel 11, can convert the impact force into rolling friction force through the rolling of the ball bearing wheel 11 in the fixing groove 9 when the car body is displaced and shaken due to the impact of the road surface. This effectively consumes energy, reduces the impact on the car body and the frame, and realizes the buffer support function of the car body.

[0030] Reference Figure 3 and Figure 4 The connecting structure includes a first connecting shaft 13, which is rotatably mounted on one side of the support base 8 near the ball bearing wheel 11. A second connecting shaft 14 is rotatably mounted on one side of the upper surface of the leaf spring 4 via a bearing support. Movable support plates 15 are installed on both the front and rear ends of the first connecting shaft 13 and the second connecting shaft 14. A fixing hole is opened on the other side of the support base 8 behind the fixing groove 9. A positioning screw 12 is inserted through the fixing hole and into the carriage on one side of the support base 8. A nut is sleeved on one side of the outer surface of the positioning screw 12.

[0031] As can be seen from the above, the No. 1 connecting shaft 13, the No. 2 connecting shaft 14, and the movable support plate 15 in the connecting structure form a specific connection relationship between the support base frame 8 and the leaf spring 4, which not only ensures a certain degree of stability but also allows for flexible rotation and deformation when encountering bumps. The positioning screw 12 and the nut ensure a stable connection between the support base frame 8 and the carriage, ensuring that the entire suspension device works in coordination with the carriage.

[0032] Example 2:

[0033] Reference Figure 3 and Figure 4 The support assembly includes a fixed support plate 5, which is fixedly installed at the middle of the top of the leaf spring 4. A support block 6 is provided at the middle of the top of the fixed support plate 5. A connecting plate 7 is fixedly installed at the bottom of the support base 8 at the corresponding position of the support block 6. The support block 6 and the connecting plate 7 are connected to each other.

[0034] As shown above, the fixed support plate 5 in the support assembly is fixedly installed at the top center of the leaf spring 4, serving to bear and transmit force. The support block 6 is located at the top center of the fixed support plate 5 and is connected to the connecting plate 7 at the bottom of the support base 8, providing a stable support point for the support base 8. This structural design allows the support base 8 to evenly transfer the weight of the carriage to the leaf spring 4 when bearing the weight, thereby buffering the pressure from the weight through the elastic deformation of the leaf spring 4. At the same time, the elastic characteristics of the support block 6 itself can also absorb vibration to a certain extent, further enhancing the stable support effect on the support base 8 and ensuring the stability and reliability of the entire suspension device when carrying the carriage.

[0035] Working principle: When the electric vehicle is moving, the wheels 2 contact the ground, and the impact force generated by bumps or other situations first acts on the axle 1. The axle 1 transmits the impact force to the leaf spring 4 through the fixing component 3, and the leaf spring 4 uses its own elastic deformation to initially buffer the impact.

[0036] The support base 8 is connected to the leaf spring 4 via a support assembly. The support rubber block 6 is fixed to the connecting plate 7 at the bottom of the support base 8 via an iron plate, bearing the weight of the carriage and providing stable support. When the carriage shifts and shakes due to road impact, the ball bearing rubber wheel 11 in the buffer mechanism on one side of the support base 8 rolls in the fixed groove 9, converting the impact force into rolling friction, consuming energy, reducing the impact on the carriage and frame, and playing the role of supporting and buffering the carriage and frame.

[0037] The No. 1 connecting shaft 13, the No. 2 connecting shaft 14 and the movable support plate 15 enable the support base frame 8 and the leaf spring 4 to achieve a static connection in the front and a flexible connection in the rear. When encountering bumps during vehicle operation, the flexible connection structure in the rear can rotate and deform flexibly to absorb more vibration energy and reduce the vibration transmitted to the passenger compartment, thereby increasing ride comfort and reducing damage to the passenger compartment and frame caused by vibration impact.

[0038] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. An electric vehicle limiting suspension device, comprising an axle (1), both sides of the axle (1) are provided with a wheel (2), characterized in that: The axle (1) outer surface is fixedly installed with a fixing part (3) near the wheel (2), the top of the fixing part (3) is fixedly installed with a leaf spring (4), the upper surface of the axle (1) is provided with a support chassis (8) above the leaf spring (4), and the top end of the leaf spring (4) is provided with a support assembly for stably supporting the support chassis (8). The side of the support chassis (8) is also provided with a buffer mechanism for buffering and supporting the carriage. The buffer mechanism comprises a fixed groove (9) formed in the side of the support chassis (8), support shafts (10) are installed side by side in the fixed groove (9), ball rubber wheels (11) are rotatably installed on one side of the outer surface of the support shafts (10), and a connecting structure is further arranged between the leaf spring (4) and the support chassis (8).

2. The electric vehicle limiting suspension device of claim 1, wherein: The support assembly comprises a fixed support plate (5) fixedly installed at the top end of the leaf spring (4), and a support rubber block (6) is arranged at the top end of the fixed support plate (5).

3. The electric vehicle limiting suspension device of claim 1, wherein: The connecting structure comprises a first connecting shaft (13) rotatably installed at the side of the support chassis (8) near the ball rubber wheel (11), a second connecting shaft (14) rotatably installed on one side of the upper surface of the leaf spring (4) through a bearing support, and movable support plates (15) are installed at the front and rear ends of the first and second connecting shafts (13) and (14).

4. The electric vehicle limiting suspension device of claim 1, wherein: The other side of the support chassis (8) is provided with a fixed hole opposite the fixed groove (9), a positioning screw (12) is inserted into the fixed hole and the carriage on one side of the support chassis (8), and a nut is sleeved on one side of the outer surface of the positioning screw (12).

5. The electric vehicle limiting suspension device of claim 2, wherein: The bottom end of the support chassis (8) is fixedly installed with a connecting plate (7) at a position corresponding to the support rubber block (6), and the support rubber block (6) and the connecting plate (7) are connected to each other.

6. The electric vehicle limiting suspension device of claim 1, wherein: The number of ball rubber wheels (11) in the fixed groove (9) is two, the volume of the ball rubber wheel (11) is smaller than the internal volume of the fixed groove (9), and the fixed groove (9) and the ball rubber wheel (11) are matched with each other.

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