A robust main beam tube arrangement for an electric motorcycle

Abstract

This utility model relates to the field of electric motorcycle technology and discloses a robust main beam tube device for electric motorcycles, including a front upright tube of the frame. A top main beam tube is symmetrically installed at the top of the front upright tube, and a lower main beam tube is symmetrically installed at the bottom of the front upright tube. The front ends of the lower and upper main beam tubes are connected by a first upper and lower main frame support tube, and their center is connected by a second upper and lower main frame support tube. One side of the top of the second upper and lower main frame support tube is connected to the tail end of the upper main beam tube via a reinforcing tube. This robust main beam tube device for electric motorcycles, where the front upright tube, lower main beam tube, upper main beam tube, and first upper and lower main frame support tubes form a three-dimensional trapezoidal structure, greatly improves the overall strength of the vehicle and significantly enhances its stability during both high and low speeds.

Description

Technical Field

[0001] This utility model relates to the field of electric motorcycle technology, and in particular to a robust main beam tube device for electric motorcycles. Background Technology

[0002] As a convenient means of transportation, the stability and strength of the frame structure of electric motorcycles are of paramount importance. The main beam tube, as a key component of the frame, plays an important role in supporting the body, transmitting power, and bearing various loads. This device is the core of the skeleton of the electric motorcycle, and its structural design directly determines the vehicle's load-bearing capacity, deformation resistance, and driving safety. Through the combination of multiple main beam tubes and support tubes, a spatial structure that combines support and functionality is formed.

[0003] However, existing robust main beam tube systems for electric motorcycles have the following drawbacks:

[0004] (1) The main beam tube of the electric motorcycle in the prior art is not strong enough and cannot withstand complex road conditions and large riding loads. When driving at high speed or low speed, the main beam tube is prone to deformation or even breakage, which seriously affects the stability and safety of the vehicle.

[0005] (2) The rear swingarm structure of traditional electric motorcycles is not good at absorbing the vibration of the rear wheel. The vibration will be transmitted to the body, making the driver feel uncomfortable. Some existing frame structures are weak in the longitudinal direction, which affects the overall performance of the vehicle.

[0006] Therefore, this utility model provides a robust main beam tube device for electric motorcycles. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] The problem solved by this utility model is to provide a robust main beam tube device for electric motorcycles that is highly practical, thus addressing the issues raised in the background art, such as the difficulty in withstanding complex road conditions and large riding loads, and the weak longitudinal rigidity of some existing frame structures.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, this utility model is implemented through the following technical solution: a robust main beam tube device for electric motorcycles, including a front upright tube of the frame, an upper main beam tube of the frame symmetrically installed at the top end of the front upright tube of the frame, and a lower main beam tube of the frame symmetrically installed at the bottom end of the front upright tube of the frame. The front ends of the lower main beam tube and the upper main beam tube of the frame are connected by a first upper and lower main support tube of the frame, and the center is connected by a second upper and lower main support tube of the frame.

[0011] Optionally, one end of the top of the second frame upper and lower main support tube is connected to the tail end of the frame upper main beam tube through a reinforcing tube of the frame upper main beam tube to enhance the connection strength between the tail end and the middle of the frame upper main beam tube and improve the overall structural stability. The center of the second frame upper and lower main support tube is connected to the tail end of the frame lower main beam tube through a frame lower connecting tube to further strengthen the connection between the frame lower main beam tube and the middle support structure.

[0012] Optionally, the rear end of the lower main beam tube of the frame is fixed with a four-bar structure rear swingarm via an upper swingarm mounting bracket and a lower swingarm mounting bracket, which can effectively absorb the vibration of the rear wheel and improve riding comfort. The connection between the four-bar structure rear swingarm and the lower main beam tube of the frame is firm and reliable, and can adapt to the stress requirements under different road conditions.

[0013] Optionally, a transverse tube is installed on the main beam tube of the frame at the position of the upper and lower main support tubes of the second frame to enhance the lateral stability of the upper part of the frame. The transverse tube is tightly connected to the main beam tube of the frame and the upper and lower main support tubes of the second frame to form a stable connection structure.

[0014] Optionally, two symmetrically arranged lower main beam tubes of the frame are provided, and adjacent two lower main beam tubes of the frame are connected by a lower horizontal tube of the frame to improve the structural stability of the lower part of the frame. The connection method between the lower horizontal tube of the frame and the lower main beam tube of the frame ensures that stress can be effectively transmitted and dispersed during vehicle operation.

[0015] Optionally, a support mounting plate is installed at the bottom of the lower main beam tube of the frame to facilitate the installation of other auxiliary support components, enhance the stability of the whole vehicle, and facilitate the installation of other auxiliary support components. The structural design and installation position of the support mounting plate are reasonable and can meet the installation requirements in actual use.

[0016] (III) Beneficial Effects

[0017] This utility model provides a robust main beam tube device for electric motorcycles, which has the following beneficial effects:

[0018] 1. The robust main beam tube device of this electric motorcycle, consisting of the front upright tube of the frame, the lower main beam tube of the frame, the upper main beam tube of the frame, and the upper and lower main support tubes of the first frame, forms a three-dimensional trapezoidal structure, which greatly improves the strength of the whole vehicle and significantly enhances the driving stability of the whole vehicle, whether driving at high speed or low speed.

[0019] 2. The electric motorcycle features a robust main beam tube assembly. The lower main beam tube of the frame is fixed to the rear swingarm via a four-link structure that connects the upper and lower swingarm mounting brackets. This effectively absorbs vibrations generated by the rear wheel in the lower half of the vehicle, reducing vibration transmission and improving driving comfort. At the same time, the spatial structure formed by the lower main beam tube, the upper main beam tube, and the upper and lower main support tubes of the first and second frames creates a battery compartment, greatly improving the longitudinal rigidity of the entire vehicle. Attached Figure Description

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

[0021] Figure 2 This is a schematic diagram of the four-bar linkage rear rocker structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the main beam tube structure on the frame of this utility model;

[0023] Figure 4 This is a schematic diagram of the front riser structure of the vehicle frame of this utility model.

[0024] In the diagram: 1. Front upright tube of the frame; 2. Lower main beam tube of the frame; 3. Upper rocker arm mounting bracket; 4. Upper main beam tube of the frame; 5. Upper and lower main support tubes of the first frame; 6. Upper and lower main support tubes of the second frame; 7. Upper transverse tube of the frame; 8. Reinforcing tube of the upper main beam tube of the frame; 9. Four-link rear rocker arm; 10. Lower transverse tube of the frame; 11. Support mounting plate; 12. Lower connecting tube of the frame; 13. Lower rocker arm mounting bracket. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] Please see Figures 1 to 4This utility model provides a technical solution: a robust main beam tube device for electric motorcycles, including a front frame upright tube 1, which serves as the front hub of the entire main beam tube device. The front frame upright tube 1 is the core component connecting the front steering system of the electric motorcycle to the main frame. The top of the front frame upright tube 1 is symmetrically equipped with upper frame main beam tubes 4, which bear the weight of the upper part of the vehicle body. At the same time, through the connection with the first upper and lower frame main support tubes 5 and the second upper and lower frame main support tubes 6, the longitudinal torsional resistance of the entire vehicle is enhanced. The bottom of the front frame upright tube 1 is symmetrically equipped with lower frame main beam tubes 2, which bear the weight of the lower part of the vehicle body and also serve as a four-link structure. The mounting base of the rear swingarm 9 transmits the driving and braking forces of the rear wheel through the bracket connected to the rear end. The front ends of the lower main beam tube 2 and the upper main beam tube 4 of the frame are connected through the first frame upper and lower main support tubes 5. The inclined angle can transmit and disperse the force on the front ends of the upper and lower main beam tubes, offsetting the longitudinal impact force generated by acceleration and braking at the front of the vehicle when driving, and preventing the front ends of the upper and lower main beam tubes from deforming due to concentrated force. The center is connected through the second frame upper and lower main support tubes 6. The distribution method perpendicular to the upper and lower main beam tubes can balance the load in the middle of the upper and lower main beam tubes, especially when the vehicle is turning or encountering bumpy roads.

[0027] The top end of the upper and lower main support tubes 6 of the second frame is connected to the tail end of the upper main beam tube 4 of the frame through the upper main beam tube reinforcement tube 8, so as to enhance the connection strength between the tail end and the middle of the upper main beam tube 4 of the frame and improve the overall structural stability. The center of the upper and lower main support tubes 6 of the second frame is connected to the tail end of the lower main beam tube 2 of the frame through the lower frame connecting tube 12, which further strengthens the connection between the lower main beam tube 2 of the frame and the middle support structure.

[0028] The rear end of the lower main beam tube 2 of the frame is fixed with a four-link rear swingarm 9 through the upper swingarm mounting bracket 3 and the lower swingarm mounting bracket 13. It can effectively absorb the vibration of the rear wheel and improve riding comfort. The connection between the four-link rear swingarm 9 and the lower main beam tube 2 of the frame is firm and reliable and can adapt to the force requirements under different road conditions.

[0029] A transverse tube 7 is installed on the main beam tube 4 of the frame at the position of the upper and lower main support tubes 6 of the second frame, which enhances the lateral stability of the upper part of the frame. The transverse tube 7 is closely connected to the main beam tube 4 of the frame and the upper and lower main support tubes 6 of the second frame, forming a stable connection structure.

[0030] There are two symmetrically arranged lower main beam tubes 2 of the frame, and the two adjacent lower main beam tubes 2 are connected by the lower horizontal tube 10 of the frame, which improves the structural stability of the lower part of the frame. The connection method between the lower horizontal tube 10 and the lower main beam tube 2 of the frame ensures that stress can be effectively transmitted and dispersed during vehicle operation.

[0031] A support mounting plate 11 is installed at the bottom of the lower main beam tube 2 of the frame, which facilitates the installation of other auxiliary support components, enhances the stability of the whole vehicle, and facilitates the installation of other auxiliary support components. The structural design and installation position of the support mounting plate 11 are reasonable and can meet the installation requirements in actual use.

[0032] In this invention, the working steps of the device are as follows:

[0033] First step: First, fix the front riser tube 1 of the frame in a suitable position, ensuring its verticality and stability. Then, symmetrically install the lower main beam tube 2 and the upper main beam tube 4 of the frame, connecting them to the bottom and top ends of the front riser tube 1, respectively. Next, install the first upper and lower main support tubes 5 of the frame, connecting and fixing both ends to the front ends of the lower main beam tube 2 and the upper main beam tube 4, forming a preliminary three-dimensional trapezoidal frame structure. Then, install the second upper and lower main support tubes 6 of the frame, connecting the center positions of the lower main beam tube 2 and the upper main beam tube 4 to further enhance the stability of the frame. Finally, install the upper main beam tube. The reinforcing tube 8 is connected at one end to one side of the upper and lower main support tubes 6 of the second frame, and at the other end to the tail end of the upper main beam tube 4 of the frame, which strengthens the main beam tube. At the same time, the lower connecting tube 12 of the frame is installed, connecting the center of the upper and lower main support tubes 6 of the second frame to the tail end of the lower main beam tube 2 of the frame. At the tail end of the lower main beam tube 2 of the frame, the four-bar structure rear rocker 9 is installed through the upper rocker mounting bracket 3 and the lower rocker mounting bracket 13 to ensure that the installation is firm and the connection is tight. Finally, the upper horizontal tube 7, the lower horizontal tube 10 of the frame and the support mounting plate 11 are installed to complete the installation of the entire main beam tube device.

[0034] The second step: During the operation of the electric motorcycle, the three-dimensional trapezoidal structure composed of the front upright tube 1, the lower main beam tube 2, the upper main beam tube 4, and the upper and lower main support tubes 5 of the first frame bears various loads such as the weight of the vehicle body, the impact force during riding, and the lateral force during turning. Due to its reasonable structural design, it can effectively disperse and bear these forces, ensuring the strength and driving stability of the whole vehicle. The four-link rear swingarm 9 can absorb the vibration generated by the rear wheel when the vehicle is in motion, and transmit and disperse the vibration through the lower main beam tube 2 and other structures, reducing the impact of vibration on the driver and improving driving comfort. The battery compartment houses the battery, which provides power to the electric motorcycle. Its spatial structure design not only makes reasonable use of the internal space of the frame, but also enhances the longitudinal rigidity of the whole vehicle through the synergistic effect with other components.

[0035] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0036] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0037] It will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A robust main beam tube arrangement for an electric motorcycle, comprising a frame front upright tube (1), characterized in that, The top of the front riser tube (1) of the frame is symmetrically equipped with the upper main beam tube (4), and the bottom of the front riser tube (1) of the frame is symmetrically equipped with the lower main beam tube (2). The front ends of the lower main beam tube (2) and the upper main beam tube (4) of the frame are connected by the first upper and lower main support tubes of the frame (5), and the center is connected by the second upper and lower main support tubes of the frame (6).

2. A rigid main beam tube arrangement for an electric motorcycle as claimed in claim 1, wherein: The top end of the second frame upper and lower main support tube (6) is connected to the tail end of the frame upper main beam tube (4) through the frame upper main beam tube reinforcement tube (8), and the center of the second frame upper and lower main support tube (6) is connected to the tail end of the frame lower main beam tube (2) through the frame lower connecting tube (12).

3. A rugged main beam tube arrangement for an electric motorcycle as defined in claim 1, characterized in that: The rear end of the lower main beam tube (2) of the frame is fixed with a four-bar structure rear rocker (9) through the upper rocker mounting bracket (3) and the lower rocker mounting bracket (13). The connection between the four-bar structure rear rocker (9) and the lower main beam tube (2) of the frame is firm and reliable.

4. A rugged main beam tube arrangement for an electric motorcycle as defined in claim 1, characterized in that: A transverse tube (7) is installed on the main beam tube (4) of the frame at the position of the upper and lower main support tubes (6) of the second frame. The transverse tube (7) of the frame is closely connected to the main beam tube (4) of the frame and the upper and lower main support tubes (6) of the second frame.

5. A rugged main beam tube apparatus for an electric motorcycle as defined in claim 1, wherein: Two symmetrically arranged lower main beam tubes (2) are provided, and two adjacent lower main beam tubes (2) are connected by a lower horizontal tube (10). The connection method between the lower horizontal tube (10) and the lower main beam tube (2) ensures that stress can be effectively transmitted and dispersed during vehicle operation.

6. A rugged main beam tube apparatus for an electric motorcycle as defined in claim 1, wherein: The bottom of the lower main beam tube (2) of the frame is equipped with a support mounting plate (11) to facilitate the installation of other auxiliary support components. The structural design and installation position of the support mounting plate (11) are reasonable.

Images