Frame of assembled electric bicycle
By designing the connecting and supporting components of the assembled electric bicycle frame, and using bolt connections to fix and support the motor, the problems of high production cost, low strength and safety factor, and high product weight of electric bicycle frames are solved, achieving cost reduction and strength improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-04
- Publication Date
- 2026-03-24
AI Technical Summary
Existing electric bicycle frames suffer from high production costs, low strength and safety factors, and excessive weight.
It adopts an assembly structure, using connecting components and support components to achieve motor fixation, support and positioning through bolt connection. It includes the combined design of components such as motor mounting base, decorative panel, guide rail, limit strip, front mounting base, front mounting cylinder, rear connecting plate, rear connecting base, middle mounting cylinder and reinforcing base.
It reduced production costs, improved the strength and safety factor, and reduced product weight.
Smart Images

Figure CN121716831A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of electric bicycle technology, and more particularly to an assembled electric bicycle frame. Background Technology
[0002] The core feature of electric bicycle frames on the current market is that they adopt a welded and fixed structure, and there are currently no assembled or versatile product forms.
[0003] The core defects of existing technologies are: high production costs, as welding processes and supporting procedures increase manufacturing costs; low strength and safety factor, as the connection stability of welded structures is insufficient; and high product weight, as the welding process uses a large amount of material, leading to increased weight. Summary of the Invention
[0004] The purpose of this invention is to provide an assembled electric bicycle frame that solves the problems of high production cost, low strength and safety factor, and high product weight of electric bicycle frames on the market.
[0005] To achieve the above objectives, the present invention provides a frame for an assembled electric bicycle, including a connecting assembly and a supporting assembly; the connecting assembly includes a motor mounting base, a decorative panel, guide rails, and limiting strips; there are two motor mounting bases, the decorative panel is fixedly connected to the motor mounting bases and located on top of the motor mounting bases; there are multiple guide rails, each fixedly connected to the motor mounting bases and located on the outer side of the motor mounting bases; there are multiple limiting strips, each fixedly connected to the decorative panel and located on both sides of the decorative panel; and the supporting assembly is connected to the motor mounting bases.
[0006] The support assembly includes a front fixed base and a front fixed cylinder. The front fixed base is bolted to the motor fixed base and is located outside the motor fixed base. The front fixed cylinder is bolted to the front fixed base and is located on top of the front fixed base.
[0007] The support assembly further includes a rear connecting plate and a rear connecting seat. There are two rear connecting plates, which are slidably connected to the motor mounting base and connected by bolts. There are also two rear connecting seats, which are connected to the rear connecting plates by bolts and are located on opposite sides of the rear connecting plates.
[0008] The support assembly further includes an intermediate fixing cylinder and a reinforcing seat. The intermediate fixing cylinder is fixedly connected to the decorative panel and passes through the decorative panel. One end of the reinforcing seat is bolted to the intermediate fixing cylinder, and the other end is bolted to the rear connecting plate.
[0009] Each of the rear connecting plates has a sliding groove at its top and two adjustment grooves at its tail.
[0010] The present invention relates to an assembled electric bicycle frame. The motor mounting bracket provides support and positioning for the electric bicycle motor. The decorative panel provides support for the intermediate fixing cylinder. The guide rail and the limiting strip limit the position of the rear connecting plate. During assembly, the rear connecting plate passes through the guide rail and the limiting strip and is fixed with bolts. The intermediate fixing cylinder is then inserted into the decorative panel, and the reinforcing seat is connected to the intermediate fixing cylinder with bolts. The reinforcing seat is then fixed to the rear of the motor mounting bracket with bolts. Finally, the front mounting bracket and the front fixing cylinder are fixed to the front of the motor mounting bracket with bolts. This facilitates assembly and solves the problems of high production cost, low strength and safety factor, and excessive weight of electric bicycle frames on the market. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0012] Figure 1 This is a schematic diagram of the overall structure of the frame of the assembled electric bicycle according to the first embodiment of the present invention.
[0013] Figure 2 This is a schematic diagram of the structure of the connection component according to the first embodiment of the present invention.
[0014] Figure 3 This is a structural schematic diagram of the rear connecting plate and the rear connecting seat according to the first embodiment of the present invention.
[0015] In the diagram: 101-motor mounting base, 102-decorative panel, 103-guide rail, 104-limiting strip, 105-front mounting base, 106-front mounting cylinder, 107-rear connecting plate, 108-rear connecting base, 109-intermediate mounting cylinder, 110-reinforcing base, 111-slide groove, 112-adjusting groove. Detailed Implementation
[0016] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0017] The first embodiment of this application is as follows:
[0018] Please see Figures 1 to 3 ,in, Figure 1 This is a schematic diagram of the overall structure of the frame of the assembled electric bicycle according to the first embodiment of the present invention. Figure 2 This is a schematic diagram of the connection component according to the first embodiment of the present invention. Figure 3 This is a structural schematic diagram of the rear connecting plate and rear connecting seat according to the first embodiment of the present invention. The present invention provides a frame for an assembled electric bicycle, including a connecting assembly and a supporting assembly. The connecting assembly includes a motor mounting seat 101, a decorative panel 102, a guide rail 103, and a limiting strip 104. The supporting assembly includes a front mounting seat 105 and a front mounting cylinder 106, a rear connecting plate 107 and a rear connecting seat 108, a middle mounting cylinder 109, and a reinforcing seat 110. The aforementioned solution solves the problems of high production cost, low strength and safety factor, and high product weight of electric bicycle frames on the market.
[0019] In this specific embodiment, there are two motor mounting bases 101. The decorative panel 102 is fixedly connected to the motor mounting base 101 and located on top of it. There are multiple guide rails 103, each fixedly connected to the motor mounting base 101 and located on its outer side. There are multiple limiting strips 104, each fixedly connected to the decorative panel 102 and located on both sides of it. The support assembly is connected to the motor mounting base 101. The motor mounting base 101 provides support and positioning for the electric bicycle motor. Plate 102 provides support for the intermediate fixed cylinder 109. The guide rail 103 and the limiting strip 104 limit the position of the rear connecting plate 107. During assembly, the rear connecting plate 107 passes through the guide rail 103 and the limiting strip 104 respectively and is fixed with bolts. Then, the intermediate fixed cylinder 109 is inserted into the decorative plate 102, and the reinforcing seat 110 is connected to the intermediate fixed cylinder 109 with bolts. The reinforcing seat 110 is fixed to the tail of the motor mounting base 101 with bolts. Then, the front mounting base 105 and the front fixed cylinder 106 are fixed to the front end of the motor mounting base 101 with bolts, which facilitates the assembly of the device.
[0020] The front mounting base 105 is bolted to the motor mounting base 101 and is located outside the motor mounting base 101. The front mounting cylinder 106 is bolted to the front mounting base 105 and is located on top of the front mounting base 105. The front mounting base 105 provides support for the front mounting cylinder 106, and the front mounting cylinder 106 is used to position the vehicle's front fork and handlebars.
[0021] Secondly, there are two rear connecting plates 107, which are slidably connected to the motor mounting base 101 and connected by bolts. There are also two rear connecting seats 108, which are bolted to the rear connecting plates 107 and located on opposite sides of the rear connecting plates 107. The rear connecting plates 107 provide support for the rear connecting seats 108, and the rear connecting seats 108 are used to fix the rear wheels.
[0022] Furthermore, the intermediate fixing cylinder 109 is fixedly connected to the decorative panel 102 and passes through the decorative panel 102. One end of the reinforcing seat 110 is bolted to the intermediate fixing cylinder 109, and the other end is bolted to the rear connecting plate 107. The intermediate fixing cylinder 109 is used to fix and support the saddle, and the reinforcing seat 110 is used to provide support for the intermediate fixing cylinder 109.
[0023] Finally, each of the rear connecting plates 107 is provided with a sliding groove 111 at its top and two adjusting grooves 112 at its tail. The sliding groove 111 cooperates with the limiting strip 104 to limit the position of the rear connecting plate 107, and the adjusting groove 112 cooperates with the rear connecting seat 108 to adjust the position of the rear connecting seat 108.
[0024] Using the assembled electric bicycle frame of this embodiment, the motor mounting bracket 101 provides support and positioning for the electric bicycle motor, the decorative plate 102 provides support for the intermediate fixing cylinder 109, and the guide rail 103 and the limiting strip 104 limit the position of the rear connecting plate 107. During assembly, the rear connecting plate 107 is passed through the guide rail 103 and the limiting strip 104 respectively and fixed with bolts. Then, the intermediate fixing cylinder 109 is inserted into the decorative plate 102, and the reinforcing bracket 110 is connected to the intermediate fixing cylinder 109 with bolts. The reinforcing bracket 110 is fixed to the rear of the motor mounting bracket 101 with bolts. Then, the front fixing bracket 105 and the front fixing cylinder 106 are fixed to the front of the motor mounting bracket 101 with bolts. This facilitates the assembly of the device and solves the problems of high production cost, low strength and safety factor, and high product weight of electric bicycle frames on the market.
[0025] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application are still within the scope of this application.
Claims
1. A frame for an assembled electric bicycle, characterized in that, Includes connecting components and supporting components; The connecting assembly includes a motor mounting base, a decorative panel, guide rails, and limiting strips. There are two motor mounting bases. The decorative panel is fixedly connected to the motor mounting base and located on top of the motor mounting base. There are multiple guide rails, each fixedly connected to the motor mounting base and located on the outer side of the motor mounting base. There are multiple limiting strips, each fixedly connected to the decorative panel and located on both sides of the decorative panel. The supporting assembly is connected to the motor mounting base.
2. The frame of the assembled electric bicycle as described in claim 1, characterized in that, The support assembly includes a front fixed base and a front fixed cylinder. The front fixed base is bolted to the motor fixed base and is located outside the motor fixed base. The front fixed cylinder is bolted to the front fixed base and is located on top of the front fixed base.
3. The frame of the assembled electric bicycle as described in claim 2, characterized in that, The support assembly also includes a rear connecting plate and a rear connecting seat. There are two rear connecting plates, which are slidably connected to the motor mounting base and connected by bolts. There are also two rear connecting seats, which are connected to the rear connecting plates by bolts and are located on opposite sides of the rear connecting plates.
4. The frame of the assembled electric bicycle as described in claim 3, characterized in that, The support assembly also includes an intermediate fixing cylinder and a reinforcing seat. The intermediate fixing cylinder is fixedly connected to the decorative panel and passes through the decorative panel. One end of the reinforcing seat is bolted to the intermediate fixing cylinder, and the other end is bolted to the rear connecting plate.
5. The frame of the assembled electric bicycle as described in claim 4, characterized in that, Each of the rear connecting plates has a sliding groove at its top and two adjustment grooves at its tail.