Frame structure of electric bicycle

Abstract

The utility model provides an electric bicycle frame structure which comprises a connecting box body, a front beam pipe is fixedly welded to one end of the connecting box body, a connecting frame is fixedly welded to the bottom end of the front beam pipe, and the connecting frame is arranged on the inner side of the connecting box body and fixedly welded to the connecting box body. A fixing seat is fixedly welded to the other end of the connecting box body, and rear bottom forks are symmetrically connected to the two sides of the fixing seat through shafts; a connecting seat is mounted on the inner side of the fixing seat, and one end of the connecting seat is fixedly welded to the outer side of the connecting box body; and a vertical pipe is fixedly mounted on the inner side of the connecting seat. Through cooperation of the fixing base and the connecting base, the vertical pipe can be stably installed on the connecting box body, the middle of the frame is replaced with the connecting box body, the situation that a battery bin position is preset on the frame and the independently-manufactured connecting box body is secondarily assembled and locked through a fastener is avoided, production time consumption is reduced, and production efficiency is improved. And the overall assembly efficiency of the product is improved.

Description

Technical Field

[0001] This utility model belongs to the field of electric bicycle manufacturing technology, and more specifically, it relates to an electric bicycle frame structure. Background Technology

[0002] Electric bicycles are mechatronic vehicles that use batteries as auxiliary power sources and integrate motors, controllers, throttles, brake levers, and display systems into a traditional bicycle frame. Their core load-bearing structure, the frame, is formed by welding multiple bent metal tubes, connecting the front and rear wheels and supporting the battery pack via longitudinal main beams. Current processes pre-position the battery compartment in the middle of the frame, requiring a secondary assembly and securing of the separately manufactured battery box using fasteners. This split design and additional installation process significantly increases production time and hinders overall assembly efficiency.

[0003] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided an electric bicycle frame structure in order to achieve a more practical purpose. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an electric bicycle frame structure, which is achieved by the following specific technical means:

[0005] An electric bicycle frame structure includes a connecting housing. A front beam tube is fixedly welded to one end of the connecting housing, and a connecting frame is fixedly welded to the bottom end of the front beam tube. The connecting frame is disposed inside the connecting housing and fixedly welded to the connecting housing. A fixing seat is fixedly welded to the other end of the connecting housing. A rear horizontal fork is symmetrically connected to both sides of the fixing seat via an axis. A connecting seat is installed inside the fixing seat, and one end of the connecting seat is fixedly welded to the outer side of the connecting housing. A riser tube is fixedly installed inside the connecting seat.

[0006] Furthermore, the interior of the connecting housing is provided with a chamber for placing the battery, and a pedal is covered on the top near the chamber. The pedal is fixedly connected to the connecting housing by fasteners.

[0007] Furthermore, a through hole one is provided on one side of the connecting frame, and a through hole two is provided on the front beam tube corresponding to the through hole one.

[0008] Furthermore, a reinforcing plate is fixedly welded to the inner side of the connecting box, and one side of the reinforcing plate is fixedly welded to the outer side of the front beam tube.

[0009] Furthermore, a cover plate is welded to the outside of the front beam tube, and the cover plate is fixedly welded to the top side of the connecting box.

[0010] Furthermore, support plates are fixedly installed on both sides of the top of the connector using fasteners.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This utility model, through the cooperation of the connecting frame and the reinforcing plate, can stably install the front beam tube on the connecting box. Through the cooperation of the fixing seat and the connecting seat, the upright tube can be stably installed on the connecting box. By replacing the middle part of the frame with the connecting box, it avoids the need for pre-setting the battery compartment on the frame and for secondary assembly and locking of the separately manufactured connecting box with fasteners, thereby reducing production time and increasing the overall assembly efficiency of the product. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 1 .

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model. Figure 2 .

[0015] Figure 3 This is a schematic diagram of the front beam tube structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of the electric bicycle of this utility model.

[0017] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0018] 1. Connecting box; 2. Connecting frame; 3. Reinforcing plate; 4. Front beam tube; 5. Cable guide hole one; 6. Cable guide hole two; 7. Fixing seat; 8. Connecting seat; 9. Support plate; 10. Riser tube; 11. Pedal; 12. Cover plate; 13. Rear horizontal fork. Detailed Implementation

[0019] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example:

[0023] As attached Figure 1 To be continued Figure 4 As shown:

[0024] This utility model provides an electric bicycle frame structure, including a connecting box 1, which is made of high-strength alloy material. A front beam tube 4 is fixedly welded to one end of the connecting box 1, and a connecting frame 2 is fixedly welded to the bottom end of the front beam tube 4. The connecting frame 2 is disposed on the inner side of the connecting box 1 and fixedly welded to the connecting box 1. A fixing seat 7 is fixedly welded to the other end of the connecting box 1. A rear horizontal fork 13 is symmetrically connected to both sides of the fixing seat 7. A connecting seat 8 is installed on the inner side of the fixing seat 7, and one end of the connecting seat 8 is fixedly welded to the outer side of the connecting box 1. A riser tube 10 is fixedly installed on the inner side of the connecting seat 8.

[0025] The connecting box 1 has a chamber for placing batteries inside, and a pedal 11 is covered on the top near the chamber. The pedal 11 is fixedly connected to the connecting box 1 by fasteners. When the user rides the electric bicycle, he can place his feet on the pedal 11. At the same time, the pedal 11 can also seal and protect the chamber.

[0026] The connecting frame 2 has a through hole 5 on one side, and the front beam tube 4 has a through hole 6 corresponding to the through hole 5, which allows the cable to be conveniently passed into the front beam tube 4 through the through hole 5 and the through hole 6.

[0027] The inner side of the connecting box 1 is fixedly welded with a reinforcing plate 3, and one side of the reinforcing plate 3 is fixedly welded to the outer side of the front beam tube 4 to increase the stability of the front beam tube 4 when it is fixed.

[0028] The front beam tube 4 is welded with a cover plate 12 on its outer side. The cover plate 12 is fixedly welded to the top side of the connecting box 1, which can protect the through hole 5 and the through hole 6, preventing foreign objects from entering the connecting box 1 through the through hole 5.

[0029] The top two sides of the connecting seat 8 are fixedly installed with support plates 9 by fasteners, which can provide stable support for the seat of the electric bicycle.

[0030] The working principle of this embodiment is as follows: When the product needs to be installed, firstly, the connecting frame 2 is welded inside the connecting box 1. Then, the cover plate 12 is fitted onto the outside of the front beam tube 4. The front beam tube 4 is welded to the connecting frame 2 and the reinforcing plate 3. Then, the cover plate 12 is welded onto the connecting box 1 and the cover plate 12 is welded to the front beam tube 4. Then, the fixing seat 7 is welded onto the outside of the connecting box 1. The connecting seat 8 is fixed onto the fixing seat 7 with fasteners. Then, the riser tube 10 is fixed onto the connecting seat 8 with fasteners. Finally, the battery and controller are fixed inside the connecting box 1, and the pedal 11 is fixed onto the connecting box 1 to complete the installation.

[0031] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An electric bicycle frame structure, comprising a connecting housing (1), characterized in that: One end of the connecting box (1) is fixedly welded with a front beam tube (4), and the bottom end of the front beam tube (4) is fixedly welded with a connecting frame (2). The connecting frame (2) is located on the inner side of the connecting box (1) and is fixedly welded to the connecting box (1). The other end of the connecting box (1) is fixedly welded with a fixing seat (7). The two sides of the fixing seat (7) are symmetrically connected with a rear horizontal fork (13). A connecting seat (8) is installed on the inner side of the fixing seat (7), and one end of the connecting seat (8) is fixedly welded to the outer side of the connecting box (1). A riser (10) is fixedly installed on the inner side of the connecting seat (8).

2. The electric bicycle frame structure as described in claim 1, characterized in that: The connecting box (1) has a chamber for placing batteries inside, and a pedal (11) is covered on the top near the chamber. The pedal (11) is fixedly connected to the connecting box (1) by fasteners.

3. The electric bicycle frame structure as described in claim 1, characterized in that: The connecting frame (2) has a through hole 1 (5) on one side, and the front beam tube (4) has a through hole 2 (6) corresponding to the through hole 1 (5).

4. The electric bicycle frame structure as described in claim 1, characterized in that: A reinforcing plate (3) is fixedly welded to the inner side of the connecting box (1), and one side of the reinforcing plate (3) is fixedly welded to the outer side of the front beam tube (4).

5. The electric bicycle frame structure as described in claim 1, characterized in that: The front beam tube (4) is welded with a cover plate (12), which is fixedly welded to the top side of the connecting box (1).

6. The electric bicycle frame structure as described in claim 1, characterized in that: Support plates (9) are fixedly installed on both sides of the top of the connector (8) by fasteners.

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