Novel integrated electric bicycle frame

Abstract

The utility model relates to a novel integrated electric bicycle frame. Comprising a frame body which is integrally formed through an all-aluminum evanescent mode process. A first mounting groove is formed in the top end of the front side of the frame main body and is used for mounting a front panel; a second mounting groove is formed in the bottom end of the front side of the frame main body and is used for mounting a front fork lower baffle; third mounting grooves are formed in the two sides of the front end of the frame body correspondingly and used for mounting anti-falling decorating parts. The problems that in the prior art, an electric vehicle frame mostly adopts a round pipe welding forming technology, the number of welding joints is large, the welding joints are prone to becoming structural weak points due to stress concentration, the overall strength and durability of the frame are affected, and meanwhile due to the linear structural design of round pipes, redundant weight is large, and cost is low are solved. And the limitation of the weight of the whole electric bicycle and the limitation of the weight of a plastic part by the latest national standard GB17761-2024 issued by the country are difficult to meet.

Description

Technical Field

[0001] This utility model relates to the field of electric bicycle frames, and in particular to a novel integrated electric bicycle frame. Background Technology

[0002] With the rapid development of the electric vehicle industry and the implementation of the newly promulgated national standard GB17761-2024, lightweighting, high strength, plastic restriction, and product safety have become the standards for electric bicycle frame design. Currently, most mainstream electric bicycle frames on the market use a round tube welding process. While this type of structure, formed by welding multiple sections of tubing together, possesses a certain load-bearing capacity, it has significant drawbacks: First, the numerous weld joints not only increase production processes and manufacturing costs, but also make the weld joints prone to stress concentration, becoming weak points in the structure and affecting the overall strength and durability of the frame; second, the linear structural design of the round tubes themselves results in low material utilization and significant redundant weight, making it difficult to meet the requirements of the newly promulgated national standard GB17761-2024 regarding the weight limits for the entire electric bicycle and the weight limits for plastic components. In addition, existing technologies often require the addition of external plastic coverings to address issues such as excessive frame weight and aesthetic shortcomings. However, an excessively high proportion of plastic parts would violate the weight limits for plastic parts stipulated in the latest national standard GB17761-2024, creating a mutually restrictive technical contradiction. Utility Model Content

[0003] This application provides a novel integrated electric bicycle frame, which solves the problems of existing electric bicycle frames that mostly use round tubes for welding, resulting in a large number of weld seams. These weld seams are also prone to stress concentration, becoming weak points that affect the overall strength and durability of the frame. In addition, the linear structure design of the round tubes themselves leads to a large amount of redundant weight, making it difficult to meet the technical problems of the latest national standard GB17761-2024 regarding the weight limits of electric bicycles and plastic parts.

[0004] The technical solution adopted in the embodiments of this application is as follows:

[0005] A novel integrated electric bicycle frame includes a frame body, which is integrally formed from all-aluminum using a lost foam casting process. A first mounting groove is formed at the top front side of the frame body for mounting a front panel. A second mounting groove is formed at the bottom front side of the frame body for mounting a front fork lower guard plate. Third mounting grooves are formed on both sides of the front end of the frame body for mounting anti-fall decorative parts. A seat mounting groove is formed at the top rear end of the frame body for mounting a seat. Fourth mounting grooves are formed at both ends of the rear side of the frame body for mounting side panel decorative parts. Two sets of fifth mounting grooves are formed at the bottom of the frame body for mounting a front and rear underbody guard plate, respectively. A sixth mounting groove is formed at the battery compartment at the bottom of the frame body for mounting foot pedals.

[0006] A further technical solution is as follows: a seventh mounting slot is also provided on the main body of the vehicle frame, the seventh mounting slot is used to install the center cover decorative part, and the seventh mounting slot is located below the seat cushion mounting slot.

[0007] A further technical solution is as follows: a taillight mounting slot is also provided at the rear end of the vehicle frame body, and the taillight mounting slot is used to install the taillight.

[0008] A further technical solution is that the anti-fall decorative parts, side panel decorative parts, and center cover decorative parts are all made of PP material.

[0009] A further technical solution is that the front guard plate, rear guard plate, and foot pedal of the base are all made of alloy material.

[0010] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0011] 1. The use of a single-piece frame formed entirely from aluminum using a lost foam casting process eliminates welding stress concentration. Combined with the precise positioning design of the first to seventh mounting slots, this improves component assembly efficiency and connection stability, resulting in increased material utilization and a reduction in overall vehicle weight to within national standard limits. PP decorative parts are installed through the third, fourth, and seventh mounting slots, ensuring aesthetic diversity while strictly adhering to the weight limits of GB17761-2024 for the total weight of plastic parts. Alloy-material bottom support plates and foot pedals are fixed through the fifth and sixth mounting slots, combining lightweight design with impact resistance, and enhancing the overall fatigue strength of the frame. This design, through a standardized mounting slot layout, simultaneously achieves lightweighting, high safety, and aesthetic optimization, resolving the technical contradictions of high redundant weight, excessive plastic parts, and low assembly precision inherent in traditional welded frames. Attached Figure Description

[0012] Figure 1This is a front view schematic diagram of the overall structure of a novel integrated electric bicycle frame according to an embodiment of this utility model.

[0013] Figure 2 This is a schematic diagram of the rear side of the overall structure of a novel integrated electric bicycle frame according to an embodiment of this utility model.

[0014] In the diagram: 1. Main frame; 11. First mounting slot; 12. Second mounting slot; 13. Third mounting slot; 14. Seat mounting slot; 15. Fourth mounting slot; 16. Fifth mounting slot; 17. Sixth mounting slot; 18. Seventh mounting slot; 19. Taillight mounting slot. Detailed Implementation

[0015] This application provides a novel integrated electric bicycle frame, which solves the problems of existing electric bicycle frames that mostly use round tubes for welding, resulting in a large number of weld seams. These weld seams are also prone to stress concentration, becoming weak points that affect the overall strength and durability of the frame. In addition, the linear structure design of the round tubes themselves leads to a large amount of redundant weight, making it difficult to meet the technical problems of the latest national standard GB17761-2024 regarding the weight limits of electric bicycles and plastic parts.

[0016] The technical solution in this application is to solve the above problems, and the overall approach is as follows:

[0017] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0018] A new type of integrated electric bicycle frame, such as Figure 1 and Figure 2 As shown, the vehicle includes a frame body 1, which is integrally formed from all-aluminum using a lost foam casting process. A first mounting groove 11 is provided at the top front side of the frame body 1 for mounting the front panel. A second mounting groove 12 is provided at the bottom front side of the frame body 1 for mounting the front fork lower guard plate. Third mounting grooves 13 are provided on both sides of the front end of the frame body 1 for mounting anti-fall decorative parts. A seat mounting groove 14 is provided at the top rear end of the frame body 1 for mounting the seat. Fourth mounting grooves 15 are provided at both ends of the rear side of the frame body 1 for mounting side panel decorative parts. Two sets of fifth mounting grooves 16 are provided at the bottom of the frame body 1 for mounting the front and rear underbody guard plates, respectively. A sixth mounting groove 17 is also provided at the battery compartment at the bottom of the frame body 1 for mounting foot pedals.

[0019] The frame body 1 is also provided with a seventh mounting slot 18, which is used to install the center cover decoration and is located below the seat mounting slot 14.

[0020] The rear end of the frame body 1 is also provided with a taillight mounting slot 19, which is used to install the taillight.

[0021] The anti-fall decorative parts, side panel decorative parts, and center cover decorative parts are all made of PP material.

[0022] The front and rear underbody panels and foot pedals are all made of alloy.

[0023] The main body 1 of this novel integrated electric bicycle frame is integrally formed using an all-aluminum lost foam casting process. A first mounting groove 11 is opened at the top of the front end for fixing the front panel, a second mounting groove 12 at the bottom for mounting the front fork lower baffle, and PP material anti-fall decorative parts are symmetrically embedded in the third mounting grooves 13 on both sides. A seat mounting groove 14 is set at the top of the rear end for supporting the seat, and a PP material center cover decorative part is configured in the seventh mounting groove 18 below it. PP material side panel decorative parts are installed in the fourth mounting grooves 15 at both ends of the rear side. The taillight mounting groove 19 is integrated into the rear end of the frame to embed the taillight. The bottom of the frame is fixed with an alloy material front guard plate and a rear guard plate through two sets of fifth mounting grooves 16 respectively. An alloy foot pedal is installed in the sixth mounting groove 17 in the battery compartment area, forming a modular assembly structure.

[0024] Because the frame body 1 is integrally molded using a lost foam casting process on all-aluminum, the problem of welding stress concentration is eliminated. Combined with the precise positioning design of the first to seventh mounting slots 11-19, component assembly efficiency and connection stability are improved, resulting in increased material utilization and a reduction in overall vehicle weight to within national standard limits. PP material decorative parts are embedded through the third, fourth, and seventh mounting slots 13, 15, and 18, ensuring aesthetic diversity while strictly adhering to the weight limits of GB17761-2024 for the total weight of plastic parts. The alloy material bottom support plate and foot pedals are fixed through the fifth and sixth mounting slots 16 and 17, combining lightweight design with impact resistance, and improving the overall fatigue strength of the frame. This design, through a standardized layout of mounting slots, simultaneously achieves lightweighting, high safety, and aesthetic optimization, resolving the technical contradictions of high redundant weight, excessive plastic parts, and low assembly precision in traditional welded frames.

[0025] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0026] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A novel integrated electric bicycle frame, comprising a frame body (1), characterized in that, The frame body (1) is integrally formed using a lost foam casting process. A first mounting groove (11) is provided at the top front side of the frame body (1), used for mounting the front panel. A second mounting groove (12) is provided at the bottom front side of the frame body (1), used for mounting the front fork lower guard plate. Third mounting grooves (13) are provided on both sides of the front end of the frame body (1), used for mounting anti-fall decorative parts. A seat is provided at the top rear end of the frame body (1). The seat cushion mounting slot (14) is used to install the seat cushion; the rear ends of the frame body (1) are respectively provided with fourth mounting slots (15), which are used to install side panel decorative parts; the bottom of the frame body (1) is provided with two sets of fifth mounting slots (16), which are respectively used to install the front guard plate and the rear guard plate of the bottom support; the bottom of the frame body (1) is also provided with a sixth mounting slot (17) at the battery compartment, which is used to install the foot pedal.

2. The novel integrated electric bicycle frame as described in claim 1, characterized in that, The frame body (1) is also provided with a seventh mounting slot (18), which is used to install the center cover decoration and is located below the seat mounting slot (14).

3. The novel integrated electric bicycle frame as described in claim 1, characterized in that, The rear end of the frame body (1) is also provided with a taillight mounting slot (19), which is used to install taillights.

4. A novel integrated electric bicycle frame as described in claim 2, characterized in that, The anti-fall decorative parts, side panel decorative parts, and center cover decorative parts are all made of PP material.

5. A novel integrated electric bicycle frame as described in claim 1, characterized in that, The front and rear protective plates of the base and the foot pedal are all made of alloy.

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