Stable swing arm structure

Abstract

The utility model discloses a stable swing arm structure which is installed in a vehicle body and comprises a swing arm body, a swing arm hole formed in the middle of the swing arm body, swing arm bearings arranged on the two sides of the swing arm body and facing the swing arm hole, and bearing outer sleeves arranged on the two sides of the swing arm body and arranged outside the swing arm bearings in a sleeved mode. The bearing rod penetrates through the swing arm hole and the swing arm bearing and is in running fit with a bearing outer sleeve, the fixed wheel body is arranged at one end of the swing arm body, the movable wheel body is arranged at the other end of the swing arm body, and an elastic structure is arranged at the end, close to the movable wheel body, of the swing arm body. According to the swing arm, the elastic structure is arranged at one end of the swing arm body, the stability problem of the swing arm when the swing arm is impacted by the outside in the moving process in a vehicle body is solved, and through the optimized design of the bearing and the bearing outer sleeve, friction and abrasion are reduced, and the durability of the structure and the stability of movement are improved.

Description

Technical Field

[0001] The utility model relates to a stable swing arm structure. Background Art

[0002] In modern vehicle suspension systems, the swing arm serves as a crucial force-transmitting element, connecting the wheels to the vehicle body and providing crucial support and control during vehicle motion. Traditional swing arms are typically made of metal and supported within the vehicle frame via bearings, allowing them to swing or rotate within a certain range to adapt to road surface changes and the vehicle's dynamic motion.

[0003] However, the existing swing arm structure still has some technical defects and deficiencies in practical applications, which are mainly reflected in the following aspects:

[0004] During vehicle operation, especially over uneven or bumpy roads, the stability of the swing arm is often significantly affected. Acceleration, deceleration, cornering, and road vibrations can cause the swing arm to vibrate and sway, impacting the vehicle's stability and comfort. Insufficient swing arm stability can lead to significant lateral deviation and uneven wheel contact pressure, compromising driving performance and safety.

[0005] Over long-term use, the bearing system of a traditional swing arm structure can experience increased wear due to design flaws or excessive friction, impacting the arm's motion accuracy and service life. Excessive friction not only increases system energy loss but can also cause jerky swing arm movement, impacting vehicle handling and comfort.

[0006] Due to the complexity of road conditions and the ever-changing vehicle load, traditional swing arm systems often struggle to adapt appropriately to the vehicle's varying dynamic states. For example, when the vehicle is traveling at high speed, making sharp turns, or experiencing sudden deceleration, the swing arm's movement may be subject to excessive impact, making it difficult to effectively mitigate the impact in a timely manner. This can lead to reduced vehicle handling and a lack of comfort.

[0007] Existing swing arm structures typically utilize separate components to carry and support various swing arm functions. This not only makes the entire structure bulky but also occupies a significant amount of space within the vehicle. This is particularly true in compact vehicles, where limited space makes it difficult to achieve optimal spatial layout with traditional swing arm structures, which in turn restricts the design and placement of other critical components within the vehicle. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model proposes a stabilized swing arm structure. By providing an elastic structure at one end of the swing arm body, this structure addresses the stability issues associated with the swing arm when subjected to external impacts during movement within the vehicle body. Furthermore, through optimized bearing and bearing housing designs, friction and wear are reduced, improving the durability of the structure and smoothness of movement. Furthermore, this design enables the swing arm structure to adapt to varying loads and motion conditions, enhancing the stability and comfort of the entire vehicle.

[0009] The technical solution adopted by the utility model to solve its technical problems is:

[0010] A stable swing arm structure is installed in a vehicle body, including a swing arm body, a swing arm hole opened in the middle of the swing arm body, swing arm bearings arranged on both sides of the swing arm body and facing the swing arm hole, bearing sleeves arranged on both sides of the swing arm body and sleeved on the outside of the swing arm bearings, a bearing rod passing through the swing arm hole and the swing arm bearing and forming a rotational fit with the bearing sleeve, a fixed wheel body arranged at one end of the swing arm body, and a movable wheel body arranged at the other end of the swing arm body, and an elastic structure is provided at one end of the swing arm body adjacent to the movable wheel body.

[0011] Preferably, the swing arm body is a long plate-like structure and is arranged at the bottom position of the vehicle body in an upright manner in the longitudinal direction.

[0012] Preferably, bearing seats are provided on both sides of the swing arm body, which are integrally formed with the swing arm body and form a cylindrical structure outside the bearing hole, and the axial hole of the bearing seat coincides with the swing arm hole.

[0013] Preferably, the swing arm bearing includes two pin tubes respectively penetrating the shaft hole and the swing arm hole from two sides.

[0014] Preferably, the bearing rod passes through the latch tube, the shaft hole and the swing arm hole in sequence, and forms a rotational connection with the bearing sleeve.

[0015] Preferably, the top of the bearing sleeve is fixedly connected to the top of the vehicle body.

[0016] Preferably, the elastic structure includes a vertical hollow tube arranged at one end of the swing arm body, a compression spring arranged in the vertical hollow tube, and a support rod with one end inserted into the vertical hollow tube to form abutment with the compression spring and the other end connected to the vehicle body.

[0017] The beneficial effects of the utility model are:

[0018] An elastic structure at one end of the swing arm effectively absorbs and cushions impact forces from the vehicle or road, reducing the arm's sensitivity to external forces. This structure effectively reduces vibration and swing amplitude during driving, especially over uneven surfaces, enhancing the stability and durability of the entire structure. This solution ensures smooth and flexible swing arm rotation through the swing arm bearing and bearing housing, as well as a bearing rod that extends through the swing arm hole and bearing. This structure allows the swing arm to swing freely within the vehicle while maintaining high stability and reducing excessive friction and wear.

[0019] The swing arm bearings and bearing sleeves on either side of the swing arm body, along with the mating bearing rod, form an efficient rotational fit, reducing direct contact friction and wear. This not only extends the swing arm's service life but also enhances the vehicle's smoothness and comfort. The elastic structure allows the swing arm structure to provide better adaptability under varying load conditions. The elastic structure can deform appropriately based on changes in vehicle body forces, thereby maintaining overall structural balance and vehicle stability, especially during significant vehicle dynamics, such as cornering, acceleration, or deceleration. The overall design of the swing arm body, bearings, bearing sleeves, and elastic structure is compact and rational, resulting in a highly efficient use of space while ensuring functionality and efficiency. This compact design ensures that when installed within the vehicle body, it not only does not take up excessive space but also provides sufficient mechanical performance, enhancing the vehicle's handling and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a stable swing arm structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the swing arm body structure of a stable swing arm structure of the utility model;

[0022] Figure 3 This is a partial structure enlargement of a stable swing arm structure of the utility model. Figure 1 ;

[0023] Figure 4 This is a partial structure enlargement of a stable swing arm structure of the utility model. Figure 2 . Specific implementation methods

[0024] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples provided are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in a very simplified form and are not in exact proportions, and are only used to facilitate and clearly illustrate the embodiments of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, they can mean fixed connection, detachable connection, or integral connection; they can mean direct connection, indirect connection through an intermediate medium, or internal communication between two components.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example

[0027] See Figure 1-4 As shown, a stable swing arm structure is installed in a vehicle body, including a swing arm body 1, a swing arm hole 2 opened in the middle of the swing arm body 1, and swing arm bearings 3 arranged on both sides of the swing arm body 1 and facing the swing arm hole 2, and bearing sleeves 4 arranged on both sides of the swing arm body 1 and sleeved on the outside of the swing arm bearings 3, and a bearing rod 5 that passes through the swing arm hole 2 and the swing arm bearing 3 and forms a rotational fit with the bearing sleeve 4, and a fixed wheel body 6 arranged at one end of the swing arm body 1, and a movable wheel body 7 arranged at the other end of the swing arm body 1. The swing arm body 1 is provided with an elastic structure 8 at one end adjacent to the movable wheel body 7.

[0028] An elastic structure, such as a spring or rubber pad 8, is installed on the end of the swing arm body 1 adjacent to the movable wheel body 7. This effectively absorbs vibration caused by uneven road conditions and mitigates the violent swinging of the swing arm 1. This helps improve vehicle stability during driving, especially when navigating bumpy roads, by reducing vehicle body vibration, thereby enhancing vehicle comfort and handling. The swing arm bearing 3 and the bearing sleeve 4 form a rotational fit, effectively reducing frictional losses during the movement of the swing arm 1. This design reduces friction between the swing arm 1 and the vehicle body, reducing wear and tear, thereby increasing the durability and service life of the swing arm 1 system.

[0029] Thanks to the introduction of elastic structure 8, when the vehicle encounters varying loads or road conditions, it automatically adapts to the dynamic changes in the vehicle body, dispersing and absorbing some of the impact force, and reducing the load on the swing arm bearing 3 and other key components. This ensures that the structure has excellent load adaptability in various driving environments. The design of this swing arm structure also improves the dynamic response speed of the swing arm 1. Especially during sharp turns, acceleration, or deceleration, the elastic structure 8 can make timely adjustments to changes in vehicle body motion, maintaining vehicle stability and comfort, and preventing excessive wheel deviation or excessive body tilt.

[0030] The compact layout of the swing arm body 1, bearing 3, elastic structure 8, and other components helps optimize the design of the vehicle suspension system and save space. This structure achieves high space utilization, particularly in compact vehicles with limited space, thus providing more room for other key components such as the engine and transmission. The rotational coordination of the swing arm bearing 3, bearing sleeve 4, and bearing rod 5, located on both sides of the swing arm body 1, simplifies the complex connection components found in traditional swing arm structures, reducing production and maintenance costs. Furthermore, the rational structure simplifies the manufacturing process, further controlling costs.

[0031] The swing arm body 1 is a long plate-like structure, and is arranged at the bottom position of the vehicle body in a vertical direction in an upright manner; bearing seats 9 are provided on both sides of the swing arm body 1, which are integrally formed with the swing arm body 1 and form a cylindrical structure outside the bearing hole, and the axial hole of the bearing seat 9 coincides with the swing arm hole 2.

[0032] The bearing seat 9 is integrally formed with the swing arm body 1, eliminating the potential for joints in traditional structures and avoiding the weaknesses associated with welding or other fixing methods. This ensures that the entire swing arm structure maintains greater strength and rigidity under load, enhancing its overall stability and reducing the likelihood of deformation of the swing arm 1. The cylindrical shape of the bearing seat 9 helps distribute stress more evenly, improving the overall structure's resistance to bending and reducing localized stress concentration.

[0033] Positioning the swing arm body 1 vertically and upright at the bottom of the vehicle body helps save lateral space and optimize the layout of the vehicle chassis. Especially in vehicles with limited space, the upright design can effectively increase the available chassis space, providing more room for other components such as the suspension system and transmission system. The upright position of the swing arm body 1 at the bottom of the vehicle body allows it to better cooperate with other chassis components, avoiding occupying space inside the vehicle, making it particularly suitable for compact or low-slung vehicles.

[0034] The integral molding of the bearing seat 9 and the swing arm body 1 simplifies the manufacturing process and eliminates the additional installation and securing steps required in traditional designs. This reduces the number of parts and assembly steps, thereby lowering production costs and improving production efficiency. Because the axial hole of the bearing seat 9 coincides with the swing arm hole 2, this precise alignment ensures that the bearing 3 maintains an accurate fit during installation, reducing installation errors and ensuring smooth system operation.

[0035] The integrated design of the bearing seat 9 and the swing arm body 1 allows for a more even load transfer from the swing arm 1 to the vehicle frame or other supporting components. This uniform force distribution effectively avoids localized stress concentration, reducing the risk of structural fatigue and damage. The integrated design of the swing arm body 1 and the bearing seat 9 enhances the overall stability of the system, enabling more stable operation under high loads or intense movement, especially under high-speed driving or complex road conditions.

[0036] The design of bearing seat 9 ensures precise alignment between swing arm hole 2 and bearing hole 3, ensuring smoother rotation of swing arm 1 during movement. This reduces friction and resistance during swing arm 1's rotation, thereby improving the suspension system's responsiveness and performance. The more stable and smooth swing arm 1 system enhances vehicle handling and comfort, especially during cornering, acceleration, and deceleration, maintaining vehicle stability and reducing vibration.

[0037] The swing arm bearing 3 includes two pin tubes that pass through the shaft hole and the swing arm hole 2 from both sides respectively; the bearing rod 5 passes through the pin tubes, the shaft hole and the swing arm hole 2 in sequence, and forms a rotational connection with the bearing sleeve 4; the elastic structure 8 includes a vertical hollow tube 81 arranged at one end of the swing arm body 1, a compression spring arranged in the vertical hollow tube 81, and a support rod 82 with one end inserted into the vertical hollow tube 81 to form abutment with the compression spring and the other end connected to the vehicle body.

[0038] Two latch tubes extend through the shaft hole and swing arm hole 2, respectively. Bearing rod 5, in turn, extends through the latch tubes, shaft hole, and swing arm hole 2, ensuring the stability of swing arm 1 during operation. The latch tubes effectively guide bearing rod 5, ensuring it does not deviate during movement. This reduces friction and wear during swing arm 1 movement and increases the service life of the bearing system. The bearing rod 5 forms a rotational connection with the bearing sleeve 4, effectively distributing the load, reducing localized wear, and improving the overall durability of the system.

[0039] The rotational connection between the bearing rod 5 and the bearing sleeve 4 enables the swing arm to rotate freely with the support of the bearing, ensuring the flexibility and range of motion of the swing arm. Especially in the suspension system, it enables the swing arm to move accurately and smoothly according to the designed trajectory, improving the vehicle's handling; the rotational connection effectively reduces the friction and resistance between the swing arm and other components during the rotation process, improves the response speed of the suspension system, and makes the vehicle more stable during driving.

[0040] A compression spring is placed within the vertical hollow tube 81, connected to the vehicle body by a support rod 82, forming an elastic structure. This elastic structure provides additional support and cushioning when the swing arm system is subjected to external impact or load, preventing excessive pressure on the swing arm and other key components, reducing potential damage risks. The compression spring absorbs impact from the road or maneuvering during vehicle operation, smoothing the movement of the swing arm and making the suspension system's impact on the vehicle body and wheels more gentle, thereby improving ride comfort and vehicle handling stability.

[0041] The design of the elastic structure (compression spring and strut 82) enables the swing arm system to effectively absorb and mitigate vibrations from road surface irregularities or impacts, preventing them from being directly transmitted to the vehicle body. The elastic properties of the compression spring mitigate the impact of external shocks on the vehicle body, enhancing the driving experience, especially in complex road conditions, significantly improving vehicle stability and comfort. The elastic structure's design automatically adjusts its stiffness and support capacity based on load changes, thus adapting to different loads and driving conditions, further enhancing the dynamic adaptability of the suspension system.

[0042] The combination of support rod 82 and compression spring not only acts as a shock absorber but also provides additional support during the swing arm's movement. This support stabilizes the swing arm during movement, preventing deformation or inaccurate movement caused by uneven loads, and improving the precision of the suspension system. Through this elastic structure and precise bearing design, the swing arm can reduce motion errors caused by uneven stress during rotation, thereby improving the controllability and responsiveness of the suspension system.

[0043] The above embodiments of the present invention are not intended to limit the scope of protection of the present invention, and the implementation methods of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structure of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in this field, without departing from the above basic technical ideas of the present invention, should fall within the scope of protection of the present invention.

Claims

1. A stabilizing swing arm structure, installed in a vehicle body, characterized by: It includes a swing arm body, a swing arm hole opened in the middle of the swing arm body, swing arm bearings arranged on both sides of the swing arm body and facing the swing arm hole, bearing sleeves arranged on both sides of the swing arm body and sleeved on the outside of the swing arm bearings, a bearing rod passing through the swing arm hole and the swing arm bearing and forming a rotational fit with the bearing sleeve, a fixed wheel body arranged at one end of the swing arm body, and a movable wheel body arranged at the other end of the swing arm body, and an elastic structure is provided at one end of the swing arm body adjacent to the movable wheel body.

2. The stabilized swing arm structure according to claim 1, characterized in that: The swing arm body is a long plate-shaped structure and is vertically arranged at the bottom of the vehicle body.

3. The stabilized swing arm structure according to claim 2, characterized in that: The two sides of the swing arm body are provided with bearing seats which are integrally formed with the swing arm body and form a cylindrical structure outside the bearing hole. The shaft hole of the bearing seat coincides with the swing arm hole.

4. The stabilized swing arm structure according to claim 3, characterized in that: The swing arm bearing comprises two pin tubes which respectively penetrate the shaft hole and the swing arm hole from two side directions.

5. The stabilized swing arm structure according to claim 4, characterized in that: The bearing rod passes through the latch tube, the shaft hole and the swing arm hole in sequence, and forms a rotational connection with the bearing sleeve.

6. The stabilized swing arm structure according to claim 1, characterized in that: The top of the bearing sleeve is fixedly connected to the top of the vehicle body.

7. The stabilized swing arm structure according to claim 1, characterized in that: The elastic structure includes a vertical hollow tube arranged at one end of the swing arm body, a compression spring arranged in the vertical hollow tube, and a support rod with one end inserted into the vertical hollow tube to form abutment with the compression spring and the other end connected to the vehicle body.

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