Integrally-formed electric bicycle frame

Abstract

The utility model discloses an integrally formed electric bicycle frame which comprises a lower pipe, one end of the upper portion of the lower pipe is fixedly connected with a head pipe, the inner end of the lower pipe is fixedly connected with a pedal, and the outer end of the pedal is fixedly connected with a pedal support. The light alloy integral casting forming (including but not limited to extrusion casting, gravity casting and pressure casting) technology is adopted, the frame is manufactured in a modularized mode by welding a plurality of parts, the number of modules is further reduced, the welding technology is not used any more, manufacturing of the whole frame can be completed only through hinge connection, and the manufacturing cost is reduced. Five modules are reduced to only two modules through optimization design, so that assembly is facilitated, assembly procedures, the number of workers and working hours are reduced, the labor productivity can be greatly improved, the labor cost can be reduced, meanwhile, collision of workpieces in the production process is reduced due to the reduction of the procedures, the product percent of pass is greatly improved, and the production efficiency is improved. And the product quality is ensured.

Description

Technical Field

[0001] The utility model relates to the field of electric bicycles, in particular to an integrally formed electric bicycle frame. Background Art

[0002] This patent Figure 3 The figure shows a liquid forged electric bicycle frame, which consists of five modules. The first module consists of the front triangle of the frame: head tube 1, upper bracket 2 of the basket, lower bracket 3 of the basket, limit plate 4, lower beam 5, bottom bracket 6, hinge pair 7, vertical beam 8, battery barrel (seat barrel) support plate 10. It adopts liquid forging process (technology) for one-time forging, completely abandoning the welding process; the second module consists of the battery barrel (seat barrel): the battery barrel (seat barrel) 9 adopts liquid forging process (technology) for one-time forging, and is fastened with bolts to the vertical beam 8 and battery barrel (seat barrel) support plate 10 to form the front triangle of the frame. The third module consists of the left fork: the left fork 11 adopts liquid forging process (technology) for one-time forging. The fourth module comprises the right fork: the right fork 12 is forged in one go by using a liquid forging process (technology). The fifth module comprises the connecting plate: the connecting plate 13 is forged in one go by using a liquid forging process (technology). The left fork 11, the right fork 12 and the connecting plate 13 are fastened and connected by bolts.

[0003] Connection method: the first module and the second module are fastened to the battery barrel (seat barrel) support plate 10 at the bottom of the battery barrel (seat barrel) 9 by bolts, and the rear of the battery barrel (seat barrel) 9 is fastened to the vertical beam 8 by bolts to form the front triangle of the frame; the left fork 11 and the right fork 12 are fastened to the connection plate 13 by bolts to form the rear triangle of the frame; the front triangle and the rear triangle are connected by the hinge pair 7 and the shock absorber 14 to form a complete electric bicycle frame.

[0004] The main disadvantages of the existing technical solution are: (1) Too many components: Although liquid forging technology is used to enable one-time molding, it still consists of five modules (components); (2) Due to the large number of modules (components), there are more steps in the actual production process and the labor cost is still high. Utility Model Content

[0005] The utility model aims to provide an integrally formed electric bicycle frame, which solves the problem that the electric bicycle frame in the prior art has many processes and still has high labor costs.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an integrally formed electric bicycle frame, comprising a down tube, an upper end of the down tube is fixedly connected to a head tube, an inner end of the down tube is fixedly connected to a pedal, an outer end of the pedal is fixedly connected to a pedal support, and the pedal support is installed at the middle position of the inner end of the down tube;

[0007] One end of the pedal away from the pedal support is fixedly connected with a middle joint, and the lower end of the pedal is fixedly connected with a vehicle ladder pair.

[0008] As a further description of the above technical solution: the upper end of the middle joint is fixedly connected with a seat bucket.

[0009] As a further description of the above technical solution: the other end of the middle joint away from the pedal is fixedly connected with a connecting hinge.

[0010] As a further description of the above technical solution: the internal rotation of the hinge is connected with an integrally formed rear flat fork.

[0011] The utility model has the following beneficial effects:

[0012] 1. Compared with the prior art, the one-piece electric bicycle frame adopts a light alloy one-piece casting process (including but not limited to extrusion casting, gravity casting, and pressure casting), so that the frame is welded by multiple parts into a modular manufacturing, and the number of modules is further reduced. The welding process is no longer used, and the entire frame can be manufactured only by hinge connection;

[0013] 2. Compared with the prior art, the one-piece electric bicycle frame reduces five modules to only two modules through optimized design, which is beneficial to assembly, reduces the assembly process and the number and working hours of assembly, can greatly improve labor productivity and reduce labor costs. At the same time, due to the reduction of processes, the collision of workpieces in the production process is reduced, the product qualification rate is greatly improved, and the quality of the product is guaranteed.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a stereogram of the utility model.

[0018] Figure 3It is a prior art comparison diagram of the utility model.

[0019] Legend:

[0020] 1. Head tube; 2. Down tube; 3. Pedal; 4. Pedal support; 5. Ladder removal; 6. Middle joint; 7. Connecting hinge; 8. Seat bucket; 9. One-piece rear flat fork. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figure 1-3 The utility model provides an embodiment of an integrated electric bicycle frame, comprising a down tube 2, an upper end of the down tube 2 is fixedly connected to a head tube 1, an inner end of the down tube 2 is fixedly connected to a pedal 3, an outer end of the pedal 3 is fixedly connected to a pedal support 4, and the pedal support 4 is installed at the middle position of the inner end of the down tube 2, an end of the pedal 3 away from the pedal support 4 is fixedly connected to a middle joint 6, a lower end of the pedal 3 is fixedly connected to a vehicle ladder pair 5, an upper end of the middle joint 6 is fixedly connected to a seat bucket 8, the head tube 1, the down tube 2, the pedal 3, the pedal support 4, the vehicle ladder pair 5, the middle joint (five-way) 6, the connecting hinge 7, and the seat bucket (battery) can form a front triangle of the entire module frame, and the middle joint 6 in the device is a five-way design, which can be better connected, and the seat bucket 8 can be loaded with batteries after installation, thereby improving the practicality of the device;

[0023] The other end of the middle joint 6 away from the pedal 3 is fixedly connected with a connecting hinge 7, and the inner rotation of the hinge 7 is connected with an integrally formed rear flat fork 9, so the connecting hinge 7 plays the role of connecting the two modules. At the same time, the process of the entire frame is: aluminum molten smelting-aluminum molten refining-casting-saw gate-deburring-T4 treatment-correction-T6 treatment-processing-grinding-phosphating treatment (passivation)-inspection-assembly-packaging-warehousing. The utility model completely abandons the argon arc welding process.

[0024] Working principle: When installing the device, it is first divided into two modules. The first module frame front triangle consists of: head tube 1, down tube 2, pedal 3, pedal support 4, ladder 5, middle joint (five-way) 6, connecting hinge 7, seat bucket (battery) 8, etc. It adopts light alloy one-piece casting (including but not limited to extrusion casting, gravity casting, pressure casting), and completely abandons welding technology; the second module is the rear triangle, which consists of an one-piece rear flat fork 9, which adopts light alloy one-piece casting (including but not limited to extrusion casting, gravity casting, pressure casting), and completely abandons welding technology. Then the first module front triangle and the second module rear triangle are connected to each other through the connecting hinge 7 to form a complete electric bicycle frame.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An integrally formed electric bicycle frame, comprising a down tube (2), characterized in that: The upper end of the lower tube (2) is fixedly connected to the head tube (1), the inner end of the lower tube (2) is fixedly connected to the pedal (3), the outer end of the pedal (3) is fixedly connected to the pedal support (4), and the pedal support (4) is installed at the middle position of the inner end of the lower tube (2); One end of the pedal (3) away from the pedal support (4) is fixedly connected to a middle joint (6), and the lower end of the pedal (3) is fixedly connected to a vehicle ladder pair (5).

2. The one-piece electric bicycle frame according to claim 1, characterized in that: The upper end of the middle joint (6) is fixedly connected to a seat bucket (8).

3. The one-piece electric bicycle frame according to claim 1, characterized in that: The other end of the middle joint (6) away from the pedal (3) is fixedly connected with a connecting hinge (7).

4. The integrally formed electric bicycle frame according to claim 3, characterized in that: The hinge (7) is internally rotatably connected to an integrally formed rear flat fork (9).

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