A double rocker arm damping four-wheel electric skateboard structure

Abstract

The utility model discloses a four -wheel electric slide of double rocker arm damping structure, include: slide plate body, the middle part is equipped with the through groove, the through groove is hinged with front rocker arm and rear rocker arm in, adjustable hydraulic damper is hinged and is installed between front rocker arm and rear rocker arm, front connecting rod and rear connecting rod, one end hinged setting in slide plate body both sides, the other end is hinged with front rocker arm and rear rocker arm respectively, front bridge frame and rear bridge frame, hinged and is installed on front rocker arm and rear rocker arm. The slide plate body includes front panel and rear panel, and the front panel and the rear panel are integrally formed. Compared with the conventional hard connection structure, the utility model can improve the vibration damping amplitude by more than 60%. The slide can effectively avoid violent jumping during driving, the driver can easily and stably control the direction and speed of the slide, greatly enhance the driving stability, significantly improve the comfort of riding, effectively reduce the risk of safety accidents caused by vibration.

Description

Technical Field

[0001] This utility model relates to the field of skateboard structure, specifically a four-wheeled electric skateboard structure with double rocker arm shock absorption. Background Technology

[0002] Currently, most four-wheeled electric skateboards use a direct rigid connection between the bridge and the deck, relying solely on the deck's elasticity and pneumatic tires for shock absorption. When encountering bumpy surfaces such as speed bumps or potholes, the wheel vibrations are directly transmitted to the deck, causing the skateboard to bounce violently up and down. This not only reduces riding comfort but also makes it difficult for the rider to accurately control the skateboard's direction and speed, increasing the risk of operational errors and potentially leading to accidents.

[0003] Some new shock-absorbing electric skateboards borrow from the double wishbone suspension structure of automobiles. While this improves shock absorption to some extent, it also brings a series of new problems. This structure is bulky and heavy, reducing the skateboard's portability. At the same time, the increased weight significantly increases battery consumption, shortens the range, and causes a large amount of power loss when driving this extra weight, resulting in poor skateboard power. Consequently, it cannot meet users' needs for efficient skateboarding and its practicality is greatly reduced.

[0004] Meanwhile, most existing shock absorption technologies employ a single damping mode, which cannot be flexibly adjusted according to different road conditions. When riding on flat urban roads, they cannot effectively filter out minor vibrations; when riding on off-road or bumpy roads, they cannot provide sufficient damping travel and cushioning capacity, limiting the performance of skateboards in different scenarios. Utility Model Content

[0005] The purpose of this utility model is to provide a four-wheel electric skateboard structure with dual rocker arm shock absorption. By optimizing the connection structure of the electric skateboard surface and the dual rocker arm shock absorption, the multi-dimensional absorption capacity of vibration is improved, reducing the up-and-down bouncing and bumpy feeling of the board surface during riding. Multi-dimensional shock absorption solves the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a four-wheeled electric skateboard structure with double rocker arm shock absorption, comprising:

[0007] The skateboard body has a through slot in the middle, and a front rocker arm and a rear rocker arm are hinged in the through slot.

[0008] An adjustable hydraulic damper is hinged between the front and rear rocker arms.

[0009] The front and rear links are hinged at one end to the sides of the skateboard body, and the other end is hinged to the front rocker arm and the rear rocker arm respectively.

[0010] The front and rear axle frames are hinged to the front and rear swingarms.

[0011] Preferably, the skateboard body includes a front panel and a rear panel, and the bottom of the front panel and the rear panel are respectively provided with a front mounting compartment and a rear mounting compartment.

[0012] Preferably, the front panel and the rear panel are integrally formed.

[0013] Preferably, the front panel and the rear panel are designed as separate units, and a connecting component is provided between the front panel and the rear panel.

[0014] Preferably, a front axle frame fixing base and a rear axle frame fixing base are respectively hinged to the front rocker arm and the rear rocker arm, and the front axle frame fixing base and the rear axle frame fixing base are respectively connected to the front axle frame and the rear axle frame.

[0015] Preferably, the front axle frame fixing base and the rear axle frame fixing base are respectively provided with a front buffer PU pad and a rear buffer PU pad.

[0016] Preferably, the front axle and the rear axle include a frame, wheels mounted on the frame, and a drive motor, wherein the drive motor is connected to the wheels via a transmission component.

[0017] Preferably, the front panel and the rear panel are provided with a wear-resistant layer.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] Superior shock absorption enhances stability and comfort: This patented system, featuring a dual-rocker arm linkage mechanism, adjustable hydraulic damper, and PU cushioning pads, fundamentally revolutionizes shock absorption. When encountering bumpy roads, wheel vibrations are initially buffered and force-transmitted through the coordinated movement of the dual rocker arms and linkage mechanism. Subsequently, the adjustable hydraulic damper efficiently converts the vibration kinetic energy into heat energy for dissipation. If the rocker arm swing is too large, the PU cushioning pads can further absorb residual impact energy. Actual testing shows that under the same complex road conditions, compared to traditional rigid connection structures, this patented shock absorption system can increase vibration attenuation by more than 60%. This effectively prevents violent bouncing during riding, allowing riders to easily and stably control the skateboard's direction and speed, greatly enhancing riding stability and significantly improving riding comfort, effectively reducing the risk of safety accidents caused by vibrations.

[0020] Optimized structure achieves a balance between lightweight design and extended range: Through an innovative open-plan design with interconnected swingarms and a modular integrated design, redundant components similar to those in automotive suspension structures are successfully eliminated. The dual swingarms, located in the center of the plank, significantly reduce the structural space required and eliminate unnecessary parts. Simultaneously, lightweight PU pads, small hydraulic dampers, and other components are used, and the four-link transmission structure is optimized, resulting in an overall structural weight reduction of 40% compared to automotive double wishbone suspension structures. This weight reduction directly leads to lower battery consumption; tests show that the skateboard's range can be increased by 15%-20%. In terms of power, the motor no longer needs to consume excessive energy to drive the heavy, redundant structure, resulting in more efficient power output and significantly improved acceleration and climbing performance. This allows the electric skateboard to meet users' actual needs for range and power while maintaining excellent shock absorption, truly returning to the essence of convenient travel.

[0021] A flexible shock absorption adaptation mechanism broadens product application scenarios: The adjustable damping and intelligent swing angle limiting adaptation mechanism endows the skateboard with strong adaptability to various scenarios. When riding on flat urban roads, the rider can adjust the adjustable hydraulic damper to a high-damping, low-stroke mode, which can quickly and accurately filter out minor road vibrations, making the ride smoother and more comfortable, while ensuring the rider's precise control of the skateboard and easily handling frequent starts, stops, and turns in urban roads. When the skateboard faces off-road or bumpy roads, switching to a low-damping, high-stroke mode allows the double-arm, four-link structure to effectively cope with large drop impacts encountered by the wheels thanks to its large-stroke shock absorption advantage. At the same time, the swing arm swing lowers the center of gravity of the board, enhancing the stability of the skateboard in complex road conditions. Combined with the precise limitation of the swing arm swing by the cushioning PU pad, this patented technology allows the skateboard to adapt to the high-frequency vibration needs of urban commuting and also demonstrate excellent passability in outdoor off-road scenarios, successfully breaking the scenario limitations of traditional single shock absorption modes, greatly expanding the application range of the product, and meeting the diverse travel needs of different users in various environments.

[0022] Cost Advantage and Market Competitiveness: The simple and compact structural design reduces the number of complex parts, lowering material and assembly costs during production. Simultaneously, standardized component selection and modular integrated design make maintenance and repair more convenient, significantly reducing maintenance costs. Compared to electric skateboards with complex and expensive automotive-like suspension structures, this patented product can be offered at a more competitive price, providing consumers with a high-value option. This not only helps increase market share but also promotes the development of the electric skateboard industry towards greater efficiency and practicality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the skateboard body structure of this utility model;

[0025] Figure 3 This is a top view of the structure of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the present invention.

[0027] Reference numerals: 1. Adjustable hydraulic damper; 2. Slide board body; 20. Front axle frame; 3. Front fixed support; 4. Rear fixed support; 5. Front connecting rod; 6. Rear connecting rod; 7. Front axle frame fixed base; 8. Rear axle frame fixed base; 9. Front rocker arm; 10. Rear rocker arm; 11. Front mounting compartment; 12. Rear mounting compartment; 13. Front buffer PU pad; 14. Rear buffer PU pad; 15. Drive motor; 19. Rear axle frame; 21. Wheel body. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating orientation or position, are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figures 1 to 4 As shown, the four-wheeled electric skateboard structure with dual rocker arm shock absorption in this embodiment includes:

[0033] The skateboard body 2 is made of high-strength, lightweight aluminum alloy, ensuring sufficient strength to support the rider's weight and withstand vibrations and impacts, while reducing overall weight. The body dimensions are based on common four-wheeled electric skateboard designs: 80-100 cm in length, 20-30 cm in width, and 8-12 cm in thickness. A through-slot, 30-40 cm long and 5-8 cm wide, is cut into the center to accommodate the rocker arms. The front rocker arm 9 and rear rocker arm 10 are hinged within this slot. The rocker arms are made of carbon fiber composite material, combining high strength and lightweight characteristics. They are 20-30 cm long, 3-5 cm thick, and 4-6 cm wide. One end has a hinge hole for connecting to the linkage, and the other end has a mounting base for connecting to the bridge, with screw holes for securing the arm.

[0034] An adjustable hydraulic damper 1 is hinged between the front rocker arm 9 and the rear rocker arm 10; it is a finished hydraulic damper with a damping force adjustment range of 0.5-3 N·s / mm and a damping stroke of 20-50 mm. Its cylinder body is made of high-strength aluminum alloy, and the piston rod is made of chrome-plated alloy steel to ensure wear resistance and rust prevention.

[0035] The front connecting rod 5 and the rear connecting rod 6 are hinged at one end to both sides of the skateboard body 2, and at the other end to the front rocker arm 9 and the rear rocker arm 10, respectively. They are made of high-strength alloy steel to ensure they are not easily deformed during force transmission. The connecting rods are 15-20 cm long and 1-1.5 cm in diameter, with hinge holes machined at both ends. The hole diameter matches the hinge shafts on the rocker arms and fixed supports. The fixed supports include a front fixed support 3 and a rear fixed support 4, made of aluminum alloy and formed by die casting. The fixed supports have mounting holes for connecting to the skateboard body and bearing seats for hinged connection to the connecting rods. The mounting hole diameter is 5-8 mm, and the inner diameter of the bearing seat is the same as that of the connecting rod hinge shaft.

[0036] Front axle mounting base 7 and rear axle mounting base 8 are hinged to the front rocker arm 9 and rear axle mounting base 10, respectively. The front axle mounting base 7 and rear axle mounting base 8 are connected to the front axle frame 20 and rear axle frame 19, respectively. The axle frames are made of aluminum alloy and manufactured using an extrusion molding process. The connection points between the mounting bases and the rocker arms are designed with matching mounting holes and positioning grooves. Bearing seats are provided at both ends of the front axle frame 20 and rear axle frame 19 where wheels are mounted, for mounting wheel bearings.

[0037] Front and rear bridge mounting bases 7 and 8 are respectively equipped with front and rear cushioning PU pads 13 and 14. The front and rear cushioning PU pads 13 and 14 are embedded into the gaps between the skateboard body 2 and the front and rear rocker arms 9 and 10, respectively, ensuring a tight fit and limiting the swing amplitude of the rocker arms. The pads are made of polyurethane (PU) material with a Shore hardness of 80-90A, with a thickness of 1-2 cm. Their shape is designed according to the gap between the skateboard body and the rocker arms to ensure a tight fit and effective cushioning.

[0038] The front axle 20 and rear axle 19 are hinged to the front rocker arm 9 and rear rocker arm 10. Deep groove ball bearings are installed at one end of the front rocker arm 9 and rear rocker arm 10. One end of the front connecting rod 5 and rear connecting rod 6 is inserted into the inner ring of the bearing, hinged to the rocker arm and connecting rod. Then, the front rocker arm 9 and rear rocker arm 10 pass through the opening in the middle of the skateboard body 2. The other end of the front rocker arm 9 is bolted to the front axle mounting base 7, and the other end of the rear rocker arm 10 is bolted to the rear axle 19.

[0039] The skateboard body 2 includes a front panel and a rear panel, which are integrally formed in one embodiment. A front mounting compartment 11 and a rear mounting compartment 12 are respectively provided at the bottom of the front panel and the rear panel. The front mounting compartment 11 and the rear mounting compartment 12 are used to install batteries and control modules. The batteries are high-energy-density lithium battery packs with a total capacity of 36V and 10-15Ah, providing stable power to the skateboard. The controller is a highly integrated and precise intelligent controller with overcharge protection, over-discharge protection, and short-circuit protection functions. It is installed in the mounting compartment, which is made of fireproof, waterproof, and dustproof plastic material.

[0040] In another embodiment, the front panel and the rear panel are designed as separate units, with a connecting component between them. This connecting component can be a fixed connection structure or a flexible connection structure. The separate design reduces production costs and facilitates partial replacement.

[0041] The front axle frame 20 and rear axle frame 19 each include a frame, wheel bodies 21 mounted on the frame, and a drive motor 15. The drive motor 15 is connected to the wheel bodies 21 via a transmission component. The drive motor 15 is a 500-1000W rated power DC brushless motor, characterized by its small size, high efficiency, and high torque. The motor mounting dimensions match the motor bracket on the axle frame, and the output shaft diameter is 10-15 mm. The wheel bodies 21 use solid polyurethane (PU) tires with a diameter of 10-15 cm and a width of 4-6 cm, featuring anti-slip treads to improve grip. The wheels are mounted on the bearing seats of the axle frame via hubs, and the hubs are connected to the motor output shaft via splines or couplings.

[0042] The front and rear panels are equipped with wear-resistant layers. These wear-resistant layers should also provide anti-slip properties to extend service life and ensure user safety.

[0043] Structurally, the components of this patent are tightly and rationally connected. The rocker arm and connecting rod are hinged via deep groove ball bearings, ensuring rotational flexibility and stability during frequent movements and reducing wear between components. The adjustable hydraulic damper's connection to the rocker arm and board allows for even force distribution during shock absorption, avoiding localized stress concentration. The inclusion of cushioning PU pads not only optimizes the shock absorption effect but also protects the rocker arm and board to some extent, reducing damage from rigid collisions. These designs significantly reduce the risk of component damage during long-term use, resulting in a substantial improvement in product reliability and durability. Simulated fatigue testing showed that the electric skateboard shock absorption device of this patent maintained excellent shock absorption performance after more than 100,000 vibration impacts, while traditional structures, under the same testing conditions, may experience a more than 50% decrease in shock absorption performance due to component wear and damage. This fully demonstrates the significant advantage in extending product lifespan.

[0044] When riding on flat urban roads: Adjust the adjustable hydraulic damper 1 to the high-damping, low-stroke mode. When the skateboard is riding on a flat urban road, the vibrations generated by the wheel 21 encountering minor bumps or cracks in the road surface are transmitted to the front swingarm 9 and rear swingarm 10 through the bridge. The swingarm drives the connecting rod to swing slightly, pushing the adjustable hydraulic damper 1 to extend and retract. Because the damper is in a high-damping state at this time, it can quickly attenuate the high-frequency vibration energy, making the skateboard ride smoothly. The rider can accurately control the direction and speed of the skateboard, resulting in a high level of riding comfort.

[0045] Off-road bumpy road riding: Adjust the adjustable hydraulic damper 1 to the low damping, high stroke mode. When the skateboard rides on off-road bumpy roads, such as muddy trails or potholes, the wheel 21 experiences a significant impact. The vibration is transmitted through the bridge to the front rocker arm 9 and the rear rocker arm 10. The rocker arms swing significantly around the fixed support, driving the connecting rod to move and causing the adjustable hydraulic damper 1 to extend and retract over a long stroke. The damper utilizes its low damping and long stroke characteristics to fully absorb vibration energy. At the same time, the skateboard's center of gravity lowers with the rocker arm swing, enhancing the skateboard's stability under complex road conditions. When the rocker arm swing amplitude approaches its limit, the front buffer PU pad 13 and the rear buffer PU pad 14 absorb residual impact energy through elastic deformation, preventing rigid collisions between the rocker arm and the skateboard, and protecting the structural safety of the device. In this mode, the skateboard can smoothly traverse various complex terrains, demonstrating excellent off-road performance.

[0046] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A four-wheeled electric skateboard structure with dual rocker arm shock absorption, characterized in that, include: The skateboard body (2) has a through groove in the middle, and a front rocker arm (9) and a rear rocker arm (10) are hinged in the through groove. An adjustable hydraulic damper (1) is hinged between the front rocker arm (9) and the rear rocker arm (10); The front link (5) and the rear link (6) are hinged at one end to both sides of the skateboard body (2), and the other end is hinged to the front rocker arm (9) and the rear rocker arm (10) respectively. The front axle (20) and rear axle (19) are hinged to the front rocker arm (9) and rear rocker arm (10).

2. The four-wheeled electric skateboard structure with double rocker arm shock absorption according to claim 1, characterized in that: The skateboard body (2) includes a front panel and a rear panel, and the bottom of the front panel and the rear panel are respectively provided with a front mounting compartment (11) and a rear mounting compartment (12).

3. The four-wheeled electric skateboard structure with double rocker arm shock absorption according to claim 2, characterized in that: The front panel and the rear panel are integrally formed.

4. The four-wheeled electric skateboard structure with double rocker arm shock absorption according to claim 2, characterized in that: The front panel and the rear panel are designed separately, and a connecting component is provided between the front panel and the rear panel.

5. The four-wheeled electric skateboard structure with double rocker arm shock absorption according to any one of claims 1 to 4, characterized in that: The front rocker arm (9) and the rear rocker arm (10) are respectively hinged to a front axle frame fixing base (7) and a rear axle frame fixing base (8), and the front axle frame fixing base (7) and the rear axle frame fixing base (8) are respectively connected to the front axle frame (20) and the rear axle frame (19).

6. The four-wheeled electric skateboard structure with double rocker arm shock absorption according to claim 5, characterized in that: The front axle frame fixing base (7) and the rear axle frame fixing base (8) are respectively provided with a front buffer PU pad (13) and a rear buffer PU pad (14).

7. The four-wheeled electric skateboard structure with double rocker arm shock absorption according to claim 5, characterized in that: The front axle (20) and rear axle (19) include a frame, wheels (21) mounted on the frame, and a drive motor (15), wherein the drive motor (15) is connected to the wheels (21) through a transmission component.

8. The four-wheeled electric skateboard structure with double rocker arm shock absorption according to claim 3 or 4, characterized in that: The front and rear panels are provided with wear-resistant layers.

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