Folding electric bicycle frame

Abstract

The utility model relates to the field of bicycle frames, in particular to a folding electric bicycle frame. Comprising a head pipe, a main beam pipe is fixedly connected to one end of the head pipe, a widened built-in self-locking folder is installed at the end, away from the head pipe, of the main beam pipe, a reinforcing middle pipe is installed at the end, away from the main beam pipe, of the widened built-in self-locking folder, and a damper upper end fixing support is installed at the lower end of the reinforcing middle pipe; a bottom shock absorber is installed in the shock absorber upper end fixing support, an integrated battery box is installed on the side, away from the main beam pipe, of the reinforcing middle pipe, a five-way rotating shaft is installed at the lower end of the reinforcing middle pipe, a chain is installed on the arc face of the five-way rotating shaft, and the lower end of the bottom shock absorber is installed on the reinforcing middle pipe. A hook claw is installed at the end, away from the five-way rotating shaft, of the reinforcing middle pipe. The folding electric bicycle frame has the advantages that the folding electric bicycle frame can be conveniently folded and can be used in most environments.

Description

Technical Field

[0001] The utility model relates to the field of frames, in particular to a foldable electric bicycle frame. Background Art

[0002] With the development of society, urban traffic is congested, and people prefer electric bicycles for their convenience. However, fire safety accidents caused by irregular parking and charging have occurred frequently. The government has begun to pay attention to the regulation of electric bicycle charging and parking, and support the construction of public charging and parking projects. It is necessary to design foldable electric bicycles that meet the needs of designated drivers and daily multi-purpose rental. The core of designated drivers is that they are small and easy to fold and put into the trunk of a car for easy carrying by the driver. The batteries of rental bicycles are generally large.

[0003] The inventor found in his daily work that in the process of using the electric vehicle frame, there is a problem that the core of the designated driving car is foldable and small, which is convenient for the driver to put into the trunk of the car and carry, while the rental battery is generally large, and it is difficult to combine the advantages of the two.

[0004] Therefore, it is necessary to provide a new folding electric bicycle frame to solve the above-mentioned technical problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a foldable electric bicycle frame.

[0006] The foldable electric bicycle frame is characterized in that: one end of the head tube is fixedly connected to the main beam tube, and the end of the main beam tube away from the head tube is equipped with a widened built-in self-locking folder, and the end of the widened built-in self-locking folder away from the main beam tube is equipped with a reinforced middle tube, the lower end of the reinforced middle tube is equipped with a shock absorber upper end fixing bracket, and the bottom shock absorber is installed inside the shock absorber upper end fixing bracket, and an integrated battery box is installed on the side of the reinforced middle tube away from the main beam tube, the lower end of the reinforced middle tube is equipped with a five-way rotating shaft, the arc surface of the five-way rotating shaft is equipped with a chain, the lower end of the bottom shock absorber is installed on the reinforced middle tube, and the end of the reinforced middle tube away from the five-way rotating shaft is equipped with a hook claw, the inside of the hook claw is rotatably connected with a small toothed plate, the upper end of the hook claw is equipped with a rear rack, the lower end of the rear rack is equipped with a lower flat fork, and the chain is installed on the small toothed plate.

[0007] The effects achieved by the above components are: the shock absorber and the small chain plate are hidden at the bottom of the battery box, and the width is smaller than the battery box. In this way, the car is not too wide when folded, which is suitable for special vehicles for designated drivers and multi-purpose portable vehicles for daily use. The upper cover of the battery box is locked with a stainless steel lock to prevent rainwater from entering, and it is convenient to replace the battery with a flip-cover design. The one-piece battery box is welded on the reinforced middle tube to form an integral whole. The reinforced middle tube and the battery box are integrally formed, and the reinforced middle tube and the battery box triangular support are more firm. The one-piece battery box is welded to the reinforced middle tube to form an integral whole. The shock absorber is designed at the bottom of the battery box and does not take up space. The small chain tooth plate is designed at the bottom of the battery box and is smaller than the width of the battery box. In this way, the car is not too wide when folded, which is in line with the small folding characteristics of the designated driver's car. The battery box is a flip-cover design and can be used as a multi-purpose vehicle for daily rental.

[0008] Preferably, the lower flat fork is fixedly connected to the rear shelf by welding.

[0009] Preferably, the upper fixing bracket of the shock absorber is fixedly connected to the integrated battery box and is supported by the integrated battery box.

[0010] The effect achieved by the above components is that the battery box can be further fixed to avoid shaking when the battery box is used.

[0011] Preferably, the width of the chain and the pinion is smaller than the width of the integrated battery box.

[0012] The effect achieved by the above components is: it can avoid the frame being too wide when folded, which makes it difficult to meet the requirements of some places when in use.

[0013] Preferably, the battery box cover is locked with a stainless steel lock.

[0014] The effects achieved by the above components are: preventing rainwater from entering and facilitating the replacement of the battery flip cover design.

[0015] Preferably, the reinforced middle tube, the upper fixing bracket of the shock absorber and the integrated battery box form a triangle.

[0016] The effect achieved by the above components is that the triangle is more stable and can avoid shaking when supporting the integrated battery box.

[0017] Compared with the related art, the foldable electric bicycle frame provided by the utility model has the following advantages:

[0018] Beneficial effects:

[0019] The utility model provides a foldable electric bicycle frame, wherein the shock absorber and the small chain plate are hidden at the bottom of the battery box, and the width is smaller than the battery box. In this way, the vehicle does not exceed width when folded, and is suitable for special vehicles for designated drivers and multi-purpose portable vehicles for daily use. The upper cover of the battery box is locked by a stainless steel lock to prevent rainwater from entering, and it is convenient to replace the battery with a flip-cover design. The integrated battery box is welded on the reinforced middle tube to form a whole. The reinforced middle tube and the battery box are integrally formed. The reinforced middle tube and the triangular support of the battery box are more firm. The integrated battery box is welded on the reinforced middle tube to form a whole. The shock absorber is designed at the bottom of the battery box and does not take up space. The small chain tooth plate is designed at the bottom of the battery box and is smaller than the width of the battery box. In this way, the vehicle does not exceed width when folded, which meets the characteristic of small foldability of designated drivers. The battery box is a flip-cover design and can be used as a multi-purpose vehicle for daily rental. By setting the overall structure, the frame can be conveniently folded and used in most environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a foldable electric bicycle frame provided by the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of a portion of the structure shown;

[0022] Figure 3 for Figure 2 The side structure schematic diagram shown;

[0023] Figure 4 for Figure 1 Schematic diagram of the lower flat fork structure shown.

[0024] Numbers in the figure: 1. Head tube; 2. Main beam tube; 3. Widened built-in self-locking folder; 4. Strengthened middle tube; 5. Integrated battery box; 6. Rear rack; 7. Hook; 8. Lower fork; 9. Bottom shock absorber; 10. Five-way shaft; 11. Shock absorber upper end fixing bracket; 12. Small sprocket; 13. Chain. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0027] See also Figures 1 to 4The utility model provides a folding electric bicycle frame, comprising: a head tube 1, one end of the head tube 1 is fixedly connected to a main beam tube 2, an end of the main beam tube 2 away from the head tube 1 is installed with a widened built-in self-locking folder 3, an end of the widened built-in self-locking folder 3 away from the main beam tube 2 is installed with a reinforced middle tube 4, a shock absorber upper end fixing bracket 11 is installed at the lower end of the reinforced middle tube 4, a bottom shock absorber 9 is installed inside the shock absorber upper end fixing bracket 11, and the reinforced middle tube 4 is installed with a bottom shock absorber 9. An integrated battery box 5 is installed on the side away from the main beam tube 2, a five-way rotating shaft 10 is installed at the lower end of the reinforced middle tube 4, a chain 13 is installed on the arc surface of the five-way rotating shaft 10, the lower end of the bottom shock absorber 9 is installed on the reinforced middle tube 4, a hook claw 7 is installed at the end of the reinforced middle tube 4 away from the five-way rotating shaft 10, the internal rotation of the hook claw 7 is connected to a small gear plate 12, a rear rack 6 is installed on the upper end of the hook claw 7, a lower flat fork 8 is installed on the lower end of the rear rack 6, and a connecting strip is installed on the small gear plate. The shock absorber and the small chain plate are hidden at the bottom of the battery box, and the width is smaller than the battery box. In this way, the car does not exceed width when folded, which is suitable for special driving vehicles and multi-purpose portable vehicles for daily use. The upper cover of the battery box is locked with a stainless steel lock to prevent rainwater from entering, and it is convenient to replace the battery with a flip-cover design. The integrated battery box 5 is welded on the reinforced middle tube 4 to form an integral whole. The reinforced middle tube 4 and the battery box are integrally formed. The reinforced middle tube 4 and the battery box triangular support are more firm. The integrated battery box is welded to the reinforced middle tube 4 to form an integral whole. The shock absorber designed at the bottom of the battery box does not take up space. The chain 13 and the small toothed plate 12 are designed at the bottom of the battery box and are smaller than the width of the battery box. In this way, the car does not exceed width when folded, which meets the characteristics of the small folding size of the designated driving vehicle. The battery box is a flip-cover design and can be used as a multi-purpose vehicle for daily rental. The lower flat fork 8 is fixedly connected to the rear shelf 6 by welding, and the upper fixed bracket 11 of the shock absorber is fixedly connected to the integrated battery box 5, and is supported on the integrated battery box 5 at the same time. The battery box can be further fixed to avoid shaking when the battery box is in use. The width of the chain 13 and the pinion is smaller than the width of the integrated battery box 5. It can avoid the frame being too wide when folded, which makes it difficult to meet the requirements of some places when in use. The upper cover of the battery box is locked with a stainless steel lock. It can prevent rainwater from entering, and it is convenient to replace the battery flip cover design, strengthen the middle tube 4 and the upper end fixing bracket 11 of the shock absorber and the integrated battery box 5 to form a triangle. The triangle is more stable and can avoid shaking when supporting the integrated battery box 5;

[0028] The working principle of a foldable electric bicycle frame provided by the utility model is as follows: the shock absorber and the small chain plate are hidden at the bottom of the battery box, and the width is smaller than the battery box. In this way, the car does not exceed width when folded, which is suitable for special vehicles for designated drivers and multi-purpose portable vehicles for daily use. The upper cover of the battery box is locked by a stainless steel lock to prevent rainwater from entering, and it is convenient to replace the battery with a flip-cover design. The integrated battery box 5 is welded on the reinforced middle tube 4 to form a whole. The reinforced middle tube 4 and the battery box are integrally formed. The reinforced middle tube 4 and the battery box triangular support are more firm. The integrated battery box is welded to the reinforced middle tube 4 to form a whole. The shock absorber designed at the bottom of the battery box does not take up space. The chain 13 and the small tooth plate 12 are designed at the bottom of the battery box and are smaller than the width of the battery box. In this way, the car does not exceed width when folded, which is in line with the small folding characteristics of the designated driver. The battery box is a flip-cover design and can be used as a multi-purpose vehicle for daily rental. By setting the overall structure, the effect of facilitating the use of the frame in most environments is achieved.

[0029] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0030] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A foldable electric bicycle frame, characterized in that: include: A head tube (1), one end of the head tube (1) is fixedly connected to a main beam tube (2), one end of the main beam tube (2) away from the head tube (1) is installed with a widened built-in self-locking folder (3), one end of the widened built-in self-locking folder (3) away from the main beam tube (2) is installed with a reinforced middle tube (4), a shock absorber upper end fixing bracket (11) is installed at the lower end of the reinforced middle tube (4), a bottom shock absorber (9) is installed inside the shock absorber upper end fixing bracket (11), and an integrated battery box (5) is installed on one side of the reinforced middle tube (4) away from the main beam tube (2). ), a five-way rotating shaft (10) is installed at the lower end of the reinforced middle tube (4), a chain (13) is installed on the arc surface of the five-way rotating shaft (10), the lower end of the bottom shock absorber (9) is installed on the reinforced middle tube (4), a hook (7) is installed at the end of the reinforced middle tube (4) away from the five-way rotating shaft (10), the inside of the hook (7) is rotatably connected to a small toothed disc (12), the upper end of the hook (7) is installed with a rear rack (6), the lower end of the rear rack (6) is installed with a lower flat fork (8), and the chain (13) is installed on the small toothed disc (12).

2. A foldable electric bicycle frame according to claim 1, characterized in that: The lower flat fork (8) is fixedly connected to the rear shelf (6) by welding.

3. A foldable electric bicycle frame according to claim 1, characterized in that: The upper end fixing bracket (11) of the shock absorber is fixedly connected to the integrated battery box (5) and is supported by the integrated battery box (5).

4. A foldable electric bicycle frame according to claim 1, characterized in that: The width of the chain (13) and the pinion gear is smaller than the width of the integrated battery box (5).

5. The foldable electric bicycle frame according to claim 1, characterized in that: The battery box upper cover is locked by a stainless steel lock.

6. A foldable electric bicycle frame according to claim 1, characterized in that: The reinforced middle tube (4), the upper end fixing bracket (11) of the shock absorber and the integrated battery box (5) form a triangle.

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