Folding power-assisted bicycle frame

Abstract

The utility model discloses a folding type power-assisted bicycle frame which comprises a main frame, the left end of the main frame is rotatably connected with a folding frame, one end, away from the main frame, of the folding frame is provided with a head tube, a battery box is arranged on the main frame, an opening of the battery box is rotatably connected with a box cover, a seat tube is fixedly installed on the upper side of the main frame, and the seat tube is fixedly connected with the main frame. A through hole is formed in the main frame in a penetrating mode, two V-shaped rods are arranged on the right side of the main frame, the two V-shaped rods and the main frame are integrally formed, and mounting grooves are formed in the lower ends of the sides, away from the main frame, of the two V-shaped rods. According to the folding chair, the self-structure is simplified, the self-weight is reduced, the carrying is labor-saving, the folding is convenient, and the occupied space is small.

Description

Technical Field

[0001] The utility model relates to the technical field of assisted bicycles, in particular to a folding assisted bicycle frame. Background Technique

[0002] A bicycle, also known as a pedal bike or a bicycle, is usually a small two-wheeled vehicle on land. After a person gets on the bike, it uses the pedals as power. It is a green and environmentally friendly means of transportation. There are many types of bicycles, including single bicycles, tandem bicycles, multi-person bicycles and assisted bicycles. Among them, the assisted bicycle is a new type of two-wheeled vehicle and belongs to a kind of bicycle. It uses a battery as an auxiliary power source, is equipped with a motor, and has a power assist system, which can realize a new type of transportation integrating human-powered riding and motor-assisted driving. In the field of assisted bicycles, the installation position of the motor is mainly divided into two types. One is the mid-drive type, that is, the motor is installed in the middle position of the vehicle body, that is, the motor at the bottom bracket position, which is called a mid-drive motor. The mid-drive motor is connected to the frame and transmits power to the rear wheel through a chain. At the same time, pedals are installed on both sides of the motor. In the case where the motor has no power, the rider can realize human-powered riding through the pedals, and the resistance is no different from that of a normal bicycle.

[0003] The existing assisted bicycles are relatively large in size and weight, occupy a large space and are difficult to carry. Moreover, the existing folding assisted bicycles are rather laborious to fold, and it is rather inconvenient to fold and unfold them.

[0004] Therefore, we propose a folding assisted bicycle frame to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a folding assisted bicycle frame to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A folding assisted bicycle frame includes a main frame. The left end of the main frame is rotatably connected to a folding frame. A head tube is provided at one end of the folding frame away from the main frame. A battery box is provided on the main frame. A lid is rotatably connected to the opening of the battery box. A seat tube is fixedly installed on the upper side of the main frame. A through hole is provided through the main frame. Two V-shaped rods are provided on the right side of the main frame. Both of the two V-shaped rods are integrally formed with the main frame. An installation groove is provided at the lower end of one side of both of the two V-shaped rods away from the main frame.

[0008] Further, a buckle is installed on the main frame, and a block that is engaged with the buckle is provided on the folding frame.

[0009] Further, a washer is provided inside the head tube.

[0010] Furthermore, both the main frame and the folding frame are hollow.

[0011] Furthermore, a seat frame is provided above the two V-shaped rods, and the seat frame is fixed to the two V-shaped rods through four support feet respectively.

[0012] Furthermore, one arm of the V-shaped rod located on the lower side is horizontally arranged, and a footrest plate is fixedly installed at the lower end of one of the V-shaped rods.

[0013] Compared with the prior art, the beneficial effects of the present utility model are at least as follows:

[0014] 1. By providing the main frame, the main frame includes the rear fork, seat tube and pedal mounting holes of a conventional bicycle, and both the main frame and the folding frame are hollow, streamlining the structure of the bicycle, reducing its own weight, and making it labor-saving and convenient to carry.

[0015] 2. By providing the folding frame, opening the buckle, and then the folding frame can be rotated relative to the main frame, so that the electric bicycle can be folded, which is relatively convenient for folding the electric bicycle and does not occupy a large space when placing it.

[0016] The present utility model streamlines its own structure, reduces its own weight, is labor-saving to carry, and is relatively convenient to fold, occupying a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front structural schematic diagram of the present utility model;

[0018] Figure 2 is an exploded structural view of the present utility model;

[0019] Figure 3 is a bottom structural schematic diagram of the present utility model;

[0020] Figure 4 is an unfolded structural schematic diagram of the folding frame in the present utility model.

[0021] As shown in the figure: 1, main frame; 2, folding frame; 3, head tube; 4, battery box; 5, box cover; 6, seat tube; 7, through hole; 8, V-shaped rod; 9, installation groove; 10, buckle; 11, block; 12, washer; 13, seat frame; 14, footrest plate; 15, support foot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be described in detail below in conjunction with the specific embodiments shown in the drawings. However, these embodiments do not limit the present utility model, and any structural, method or functional transformation made by those of ordinary skill in the art based on these embodiments is included in the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 4 , a folding assisted bicycle frame, including a main frame 1. It should be noted that a buckle 10 is installed on the main frame 1, and a clamping block 11 engaged with the buckle 10 is provided on the folding frame 2. When folding, just open the buckle 10 and the clamping block 11. The left end of the main frame 1 is rotatably connected to a folding frame 2. A head tube 3 is provided at one end of the folding frame 2 away from the main frame 1. It is worth mentioning that a washer 12 is arranged inside the head tube 3. It should be noted that the bicycle handlebar and the front wheel are installed inside the head tube 3. A battery box 4 is provided on the main frame 1. A box cover 5 is rotatably connected to the opening of the battery box 4. It should be noted that the battery pack is installed inside the battery box 4. A seat tube 6 is fixedly installed on the upper side of the main frame 1. It should be noted that the seat cushion is installed inside the seat tube 6. A through hole 7 is provided through the main frame 1. It should be noted that the foot pedal and the crankshaft are installed at the position of the through hole 7. Two V-shaped rods 8 are provided on the right side of the main frame 1. It should be noted that a seat frame 13 is provided above the two V-shaped rods 8. The seat frame 13 is fixed to the two V-shaped rods 8 respectively through four support feet 15. The two V-shaped rods 8 are integrally formed with the main frame 1. It should be noted that a stable triangular structure is formed between the V-shaped rods 8 and the main frame 1. Installation grooves 9 are provided at the lower ends of the two V-shaped rods 8 on the side away from the main frame 1. It should be noted that the rear wheel is installed on the installation grooves 9. Further, both the main frame 1 and the folding frame 2 are hollow, reducing the self-weight and facilitating carrying. It should be noted that one arm of the V-shaped rod 8 located at the lower side is horizontally arranged, and a footrest plate 14 is fixedly installed at the lower end of one of the V-shaped rods 8.

[0024] In this embodiment, the main frame 1 encompasses the rear fork, seat tube 6, and foot pedal mounting holes of a conventional bicycle, and both the main frame 1 and the folding frame 2 are hollow, streamlining the structure of the bicycle, reducing its self-weight, saving effort and being more convenient when carrying. When folding, open the buckle 10, and then the folding frame 2 can be rotated relative to the main frame 1 until it reaches the appropriate position to complete the folding, which is relatively convenient for folding an electric bicycle.

[0025] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0026] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not used to limit the protection scope of the present invention. Any equivalent embodiments or changes made without departing from the technical spirit of the present invention should be included within the protection scope of the present invention.

Claims

1. A folding power-assisted bicycle frame, comprising a main frame (1), characterized in that: The left end of the main frame (1) is rotatably connected to a folding frame (2). One end of the folding frame (2) away from the main frame (1) is provided with a head tube (3). A battery box (4) is provided on the main frame (1). A box cover (5) is rotatably connected to the opening of the battery box (4). A seat tube (6) is fixedly installed on the upper side of the main frame (1). A through hole (7) is penetrated through the main frame (1). Two V-shaped rods (8) are provided on the right side of the main frame (1). Both of the two V-shaped rods (8) are integrally formed with the main frame (1). An installation groove (9) is provided at the lower end on the side of the two V-shaped rods (8) away from the main frame (1).

2. The foldable power-assisted bicycle frame according to claim 1, wherein: A buckle (10) is installed on the main frame (1), and a clamping block (11) engaged with the buckle (10) is provided on the folding frame (2).

3. The foldable power-assisted bicycle frame according to claim 2, wherein: A washer (12) is arranged inside the head tube (3).

4. A foldable power-assisted bicycle frame according to claim 1, characterized in that: Both the main frame (1) and the folding frame (2) are hollow.

5. The folding power-assisted bicycle frame according to claim 4, wherein: A seat frame (13) is provided above the two V-shaped rods (8). The seat frame (13) is fixed to the two V-shaped rods (8) respectively through four support feet (15).

6. The foldable power-assisted bicycle frame according to claim 1, wherein: One arm of the V-shaped rod (8) located on the lower side is horizontally arranged. A footrest plate (14) is fixedly installed at the lower end of one of the V-shaped rods (8).

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