Damping frame and electric vehicle

Abstract

The utility model discloses a shock absorption frame and an electric vehicle, and belongs to the technical field of electric vehicles, the shock absorption frame comprises a front frame and a rear frame connected to the rear part of the front frame, the front part of the front frame is used for installing a front fork frame, the rear frame is used for installing a rear wheel, the rear part of the rear frame is connected with a hook claw, and the rear part of the hook claw is provided with a shaft hole for installing the rear wheel. The front frame is fixedly connected with the rear frame, the front portion of the hook claw is connected with the rear frame through a rotating shaft, a swing arm portion is formed between the rotating shaft and the shaft hole of the hook claw, a shock absorber is arranged between the hook claw and the rear frame, and the shock absorber provides buffering for swing of the swing arm portion around the rotating shaft. According to the electric bicycle frame, through the integrated structural design and the independent damping units, the overall rigidity is enhanced, controllability and comfort are improved, meanwhile, space utilization, weight distribution and assembly layout are optimized, and higher attractiveness, stability and durability are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric vehicles, and particularly relates to a shock-absorbing frame and an electric vehicle. Background Art

[0002] A bicycle is a two-wheeled vehicle driven by human power pedals, with the characteristics of simple structure, environmental protection and fitness, and is widely used for daily commuting and leisure sports. In contrast, an electric bicycle adds components such as a motor and a battery on the basis of a traditional bicycle, and can be driven by electric assistance to reduce the physical consumption of the rider, especially more convenient for long distances or uphill. Electric bicycles usually come with multiple riding modes and can switch between pure human power, assisted power or pure electricity, providing a more diverse usage experience. As the main component of a vehicle, the stiffness and integrity of the frame are crucial to the performance and riding experience of a bicycle or an electric bicycle. The stiffness of the frame directly affects the stability and controllability of the vehicle. Insufficient stiffness will cause excessive deformation of the frame during riding, weaken the efficiency of pedaling, and may pose safety hazards. A frame with high stiffness can better transmit the power of the rider, improve the acceleration and climbing ability, and reduce energy loss at the same time. Integrity ensures the effective cooperation of each component, avoiding unnecessary loosening or deviation, thereby improving the durability and comfort of the vehicle. Therefore, the stiffness and integrity of the frame not only determine the structural strength of the vehicle, but also affect its controllability, comfort and service life.

[0003] At present, there are various disadvantages and deficiencies in the frames of electric bicycles, which affect the overall performance and user experience of the vehicles. Firstly, the shock-absorbing structure is usually set between the front frame and the rear frame. The two are connected by a rotating shaft, and a shock absorber is installed to buffer bumps. Although this structure effectively improves the comfort of the vehicle and meets the shock-absorbing requirements, it sacrifices the integrity and stiffness of the frame to a certain extent, resulting in a loose performance of the frame during intense handling and a decrease in the stability and handling accuracy of the vehicle. In addition, since the frame needs to accommodate additional components such as batteries, electronic control systems, and motors, the design of the frame often has to be adjusted, leading to a more complex overall structure, which may affect the space utilization efficiency and aesthetics of the frame. Moreover, when the structural design of the frame takes into account the installation positions of the battery and the motor, it may cause the center of gravity to shift or be unevenly distributed, thereby affecting the balance and handling feel during riding, especially when turning or braking. Furthermore, the integration requirements of the battery and the electric system require the frame to have higher requirements in terms of strength and heat dissipation, but many existing frames of electric bicycles do not fully consider this point, which may lead to frame fatigue or even damage after long-term use. In addition, the arrangement of cables and control lines may also be exposed due to insufficient frame design, increasing the risk of damage and maintenance. Therefore, although the existing frames can support the use requirements of electric bicycles to a certain extent, there are still many deficiencies in terms of space utilization, balance, strength, and line management. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the present utility model provides a shock-absorbing frame and an electric vehicle, which aim to solve the technical problems of optimizing space utilization, strength design, and line layout of the frame of an electric bicycle on the premise of ensuring integrity, stiffness, and balance.

[0005] The present utility model is realized as follows. A shock-absorbing frame includes a front frame and a rear frame connected to the rear part of the front frame. The front part of the front frame is used for installing a front fork frame, and the rear frame is used for installing a rear wheel. A hook claw is connected to the rear part of the rear frame, and a shaft hole for installing the rear wheel is provided at the rear part of the hook claw. It is characterized in that: the front frame and the rear frame are fixedly connected, the front part of the hook claw is connected to the rear frame through a rotating shaft, a swing arm part is formed between the rotating shaft and the shaft hole of the hook claw, a shock absorber is arranged between the hook claw and the rear frame, and the shock absorber provides buffering for the swing of the swing arm part around the rotating shaft.

[0006] In the above technical solution, preferably, the lower end of the shock absorber is hinged to the hook claw through a pin shaft, and the upper end of the shock absorber is hinged to the rear frame through a pin shaft.

[0007] In the above technical solution, preferably, the rear frame includes a rear flat frame and a diagonal brace frame. The rear flat frame and the diagonal brace frame form a triangular frame structure with the saddle riser of the front frame. The angular part formed by the rear flat frame and the diagonal brace frame is connected to the rotating shaft through an ear plate member.

[0008] In the above technical solution, preferably, the hook claw has a triangular frame structure. The bottom border of the hook claw forms the swing arm part. The shaft hole is a slotted hole provided at the rear of the hook claw and open at the rear. The angular part formed by the two side borders of the hook claw is hinged to the shock absorber through a pin shaft.

[0009] In the above technical solution, preferably, the rear frame includes a rear bracket. The rear bracket is a planar bracket formed above the rear flat frame and the diagonal brace frame. The lower part of the rear bracket fixes a side panel. The upper end of the shock absorber is connected to the side panel through a pin shaft.

[0010] The electric bicycle frame of the present utility model has multiple advantages and remarkable effects in design, fully considering core elements such as the rigidity, integrity, and function integration of the frame.

[0011] First of all, an integrated overall frame structure is adopted at the front and rear. This design greatly enhances the stiffness and structural strength of the frame, enabling the electric bicycle to exhibit better stability during high-speed driving, turning, or on complex road conditions, reducing the deformation and fatigue phenomena of the frame caused by long-term use or large external forces. The enhanced integrity of the frame not only helps to improve the controllability but also effectively reduces the shaking and looseness of the vehicle on complex road conditions, providing a more accurate and reliable riding experience.

[0012] Secondly, an independent shock absorption unit is designed at the rear wheel hook claw of the frame. This innovative design localizes the shock absorption function, avoiding the drawback of sacrificing the overall stiffness and stability due to the shock absorption system in the traditional frame structure. While ensuring excellent shock absorption performance, the independent shock absorption unit design does not affect the overall rigidity and consistency of the frame, thus taking into account both comfort and controllability. This design is especially suitable for long-distance riding and complex terrains, effectively absorbing the vibrations brought by the road surface, reducing the fatigue of the rider, and improving the riding comfort.

[0013] In addition, the elimination of the traditional shock absorption system's restrictions on the frame layout in the integral frame simplifies the frame structure, eliminates redundant connecting components, and reduces the body weight. This simplified frame is not only more efficient in manufacturing processes but also improves the frame's space utilization rate and optimizes the layout of internal components of the electric bicycle. Due to the more flexible internal space design of the frame, it can provide more flexible options for the installation of battery packs, controllers, circuits, and other electronic components, avoiding the over-concentration or unreasonable layout of components due to limited space, which helps to improve the overall heat dissipation performance and battery endurance of the vehicle. In addition, the reasonable space design also makes the weight distribution of the electric bicycle more balanced, optimizes the vehicle's center of gravity distribution, and further improves the balance and handling during riding.

[0014] Finally, the integral frame design not only improves the structural strength but also enhances the frame's aesthetics and functional integration. Due to the more concise design without redundant connecting parts and support structures, the frame appearance is more streamlined, meeting the aesthetics of modern industrial design. In addition, the simplified frame design makes maintenance and servicing more convenient, reduces the risk of loosening and damage that may occur during daily use of the vehicle, improves the reliability and durability of the vehicle, and extends the service life of the electric bicycle. Therefore, this frame design comprehensively improves the overall performance and user experience of the electric bicycle in terms of structural strength, shock absorption performance, space utilization, maneuverability, and aesthetics.

[0015] The second objective of the present utility model is to propose an electric vehicle, characterized in that: the electric vehicle is equipped with the above-mentioned shock-absorbing frame. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the present utility model. Detailed Embodiments

[0017] In order to make the objectives, technical solutions, and advantages of the present utility model clearer, the following further details the present utility model in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0018] To solve the technical problems of optimizing space utilization, strength design, and wiring layout of the electric bicycle frame while ensuring integrity, stiffness, and balance, the present utility model specifically provides a shock-absorbing frame and an electric vehicle. The electric bicycle frame of the present utility model, through an integrated structure design and independent shock-absorbing units, while enhancing the overall stiffness, improving maneuverability and comfort, optimizes space utilization, weight distribution, and component layout, achieving higher aesthetics, stability, and durability. To further illustrate the structure of the present utility model, the following is a detailed description in conjunction with the drawings:

[0019] Please refer to Figure 1 , a shock-absorbing frame, including a front frame 1 and a rear frame 2 connected to the rear of the front frame. The front part of the front frame is used to install the front fork frame, the rear frame is used to install the rear wheel, the rear part of the rear frame is connected to a hook claw 3, and a shaft hole 3-1 for installing the rear wheel is provided at the rear of the hook claw. As is known to those skilled in the art, the front frame refers to a basic frame-shaped member composed of a front cross beam 1-1, a front fork sleeve 1-2, a saddle riser 1-3, and a bottom bracket 1-4. It is located in the middle of the vehicle and is the main part of the frame. Its front end installs the front fork through the front fork sleeve, and its rear part is connected to the rear frame. The rear frame is a frame-shaped member for installing the rear wheel, which forms a left-right symmetric fork frame on both sides of the rear wheel, and the rear part is connected to a hook claw for installing the rear wheel.

[0020] The front frame and the rear frame are fixedly connected. In this embodiment, the front frame and the rear frame are an integrally welded frame body, or other forms of integrally formed frame bodies. The integral structure significantly improves the integrity and rigidity of the frame.

[0021] The front part of the hook claw is connected to the rear frame through a rotating shaft 4, and a swing arm part 3-2 is formed between the rotating shaft and the shaft hole of the hook claw. A shock absorber 5 is arranged between the hook claw and the rear frame, and the shock absorber provides buffering for the swing of the swing arm part around the rotating shaft. In this technical solution, the hook claw is a component for installing the rear wheel, and is installed on the rear frame in a swinging manner, and is equipped with a shock absorber that provides buffering force for it, so that the rear wheel installed on the hook claw, the hook claw, and the shock absorber form an independent shock-absorbing unit. This structure minimizes the structural area of the shock-absorbing unit, makes the shock-absorbing structure compact, and maximally ensures the integrity of the frame at the same time, significantly improving the stability of the frame.

[0022] In this embodiment, the lower end of the shock absorber is hinged to the hook claw through a pin shaft, and the upper end of the shock absorber is hinged to the rear frame through a pin shaft. The rear frame includes a rear flat frame 2-1 and a diagonal brace 2-2. The rear flat frame and the diagonal brace form a triangular frame structure with the saddle riser of the front frame. The angular part formed by the rear flat frame and the diagonal brace is connected to the rotating shaft through an ear plate member. The hook claw is a triangular frame structure. The bottom border of the hook claw forms a swing arm part. The shaft hole is a slot hole provided at the rear of the hook claw and opening at the rear. The angular part formed by the two side borders of the hook claw is hinged to the shock absorber through a pin shaft. The rear frame includes a rear bracket. The rear bracket is a planar bracket formed above the rear flat frame and the diagonal brace. The lower part of the rear bracket fixes a side panel, and the upper end of the shock absorber is connected to the side panel through a pin shaft. The above structural design makes the angular parts formed at the connection between the rear frame, which mainly bears the vibration stress, and the rotating shaft of the hook claw and at the junction between the hook claw and the shock absorber. The angular part is the apex support, and the structural stability is fully exerted, effectively avoiding the transmission of fragmented vibrations to the frame.

[0023] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A shock-absorbing frame, comprising a front frame and a rear frame connected to the rear of the front frame, wherein the front of the front frame is used to mount a front fork frame, the rear of the rear frame is used to mount a rear wheel, the rear of the rear frame is connected to a hook, and the rear of the hook is provided with an axle hole for mounting the rear wheel, characterized in that: The front frame and the rear frame are fixedly connected, the front part of the hook is connected to the rear frame via a rotating shaft, the hook forms a swing arm portion from the rotating shaft to the shaft hole, a shock absorber is arranged between the hook and the rear frame, and the shock absorber provides buffering for the swing arm portion swinging around the rotating shaft.

2. The shock-absorbing frame according to claim 1, characterized in that: The lower end of the shock absorber is hinged to the hook claw via a pin shaft, and the upper end of the shock absorber is hinged to the rear frame via a pin shaft.

3. The shock-absorbing frame according to claim 2, characterized in that: The rear frame comprises a rear flat frame and an oblique support frame, wherein the rear flat frame and the oblique support frame form a triangular frame structure with the saddle seat stand pipe of the front frame, and the angled portion formed by the rear flat frame and the oblique support frame is connected to the rotating shaft through an ear plate component.

4. The shock-absorbing frame according to claim 3, characterized in that: The hook claw is a triangular frame structure, the bottom frame of the hook claw forms the swing arm part, the shaft hole is a slotted hole arranged at the rear of the hook claw and open at the rear, and the angled part formed by the two side frames of the hook claw is hinged to the shock absorber through a pin shaft.

5. The shock-absorbing frame according to claim 4, characterized in that: The rear frame comprises a rear bracket, which is a planar bracket formed above the rear flat frame and the diagonal support frame. The lower part of the rear bracket is fixed with a side panel, and the upper end of the shock absorber is connected to the side panel through a pin shaft.

6. An electric vehicle, characterized in that: The electric vehicle is equipped with the shock-absorbing frame according to any one of claims 1-5.

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