CN211685459U

CN211685459U - Electric bicycle frame

Info

Publication number: CN211685459U
Application number: CN201922161690.XU
Authority: CN
Inventors: 王进
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-10-16
Anticipated expiration: 2029-11-26

Abstract

The utility model discloses an electric bicycle frame, which comprises a bicycle beam, a head tube, a seat tube and a rear fork, wherein the head tube is fixed at the front end of the bicycle beam, the rear fork comprises an upper rear fork and a lower rear fork, the lower rear fork is U-shaped, two tail ends of the lower rear fork are respectively connected with a rear fork piece, and a damping device is arranged between the rear fork piece and the upper rear fork; the five-way pipe is fixed on the seat pipe, and the front end of the rear lower fork is hinged with the five-way pipe; the front end of the bottom plate is fixed on the seat tube; a battery box is arranged in a space formed by surrounding the seat tube, the front part of the rear upper fork and the bottom plate. The technical scheme of the frame has the advantages of excellent damping performance, concise and attractive whole body and high safety coefficient.

Description

Electric bicycle frame

Technical Field

The utility model relates to an electric vehicle field, in particular to electric bicycle frame.

Background

China has a large population, and transportation is a big problem. The electric bicycle has the trend of increasing popularity due to the fact that the electric bicycle is convenient to travel and small in occupied area, and pollution of fuel oil to the atmosphere can be effectively reduced.

How to place the battery of the electric bicycle has many formed proposals, for example, chinese patent CN201621219939.8 discloses a new shock-absorbing frame for electric bicycle, in which the battery is placed inside a triangular frame. Chinese patent CN201621180425.6 discloses a battery box for electric bicycle, which is characterized in that the battery box is arc-shaped and is arranged in the gap between the upper side of the rear wheel and the rear seat of the bicycle, the battery with the design is not easy to be taken out and maintained or charged independently, and the rear part of the bicycle body is too bulky and not beautiful.

How effective shock attenuation also need solve, some electric bicycle shock attenuation modes are single at present or just do not have the shock attenuation at all, run into and cause easily when the road surface jolts and turn on one's side, and is very dangerous, also greatly reduced the travelling comfort of riding.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electric bicycle frame that has good shock attenuation effect, battery position reasonable, have streamlined molding, and easily manufacturing.

The utility model discloses a realize like this: an electric bicycle frame comprises a bicycle beam, a head tube, a seat tube and a rear fork, wherein the head tube is fixed at the front end of the bicycle beam, the rear fork comprises an upper rear fork and a lower rear fork, the lower rear fork is U-shaped, two tail ends of the lower rear fork are respectively connected with a rear fork piece, and a damping device is arranged between the rear fork piece and the upper rear fork; the five-way pipe is fixed on the seat pipe, and the front end of the rear lower fork is hinged with the five-way pipe; the front end of the bottom plate is fixed on the seat tube; a battery box is arranged in a space formed by surrounding the seat tube, the front part of the rear upper fork and the bottom plate.

The front end of the rear upper fork is fixed on the seat tube, the rear upper fork is horizontally arranged, and the two tail ends of the rear upper fork extend backwards and are connected through the tail tube.

The five-way pipe is provided with a fixedly arranged base, and the front end of the rear lower fork is tilted upwards and hinged to the base.

A cross bar is arranged in the middle of the rear upper fork; the lower end of the side plate is fixed on the bottom plate, and the upper end of the side plate is abutted against the cross rod.

The damping device is any one of a damping spring, a pneumatic damper and a hydraulic damper.

The five-way pipe is provided with a hinged support fixedly arranged, the lower end of the reinforcing pipe is hinged to the hinged support, and the upper end of the reinforcing pipe is fixed to the vehicle beam.

And a shock absorber is arranged between the vehicle beam and the seat tube.

A lower reinforcing pipe is fixedly arranged between the vehicle beam and the five-way pipe, and an upper reinforcing pipe is fixedly arranged between the vehicle beam and the seat pipe.

The car beam is provided with a locking device, and the locking device is provided with a folding joint and a quick-release handle.

And a battery body is arranged in the battery box.

The utility model discloses the back lower fork of electric bicycle frame is the U type, and back lower fork front end upwarps and articulated connects in the five-way pipe, and the back fork of two front and back extreme point lengths of back lower fork far away in ordinary frame has extremely long rotor arm in mechanics principle, and damping device between fork piece and the back upper fork of deuterogamying can reach fabulous shock attenuation effect, obviously increases stability, comfort level of riding, is applicable to different road surface environment. The rear lower fork is of a U-shaped structure, and the front end of the rear lower fork can perfectly avoid the conflict with the seat tube in the spatial position. The rear upper fork is horizontally arranged, two tail ends of the rear upper fork extend backwards and are connected through the tail pipe, and therefore the rear upper fork has the structure and the function of the rear clothes rack, and is simple and attractive. Meanwhile, the space formed by the seat tube, the front part of the rear upper fork and the bottom plate in a surrounding way can be used for placing the battery box, and the structure is compact and reasonable. The volume of the folded frame is very small, and the frame is easy to carry, store, get on and off buses and subways.

Drawings

Fig. 1 is a front schematic view of an electric bicycle frame according to the present invention;

FIG. 2 is a schematic top view of the electric bicycle frame of the present invention;

FIG. 3 is a perspective view of the frame of the electric bicycle of the present invention;

FIG. 4 is a perspective view of the electric bicycle frame with a battery box according to the present invention;

fig. 5 is a perspective view of another embodiment of the frame of the electric bicycle of the present invention;

fig. 6 is a perspective view of the electric bicycle frame of the present invention with a battery box according to another embodiment.

Detailed Description

The electric bicycle frame of the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 6, the electric bicycle frame includes a frame beam 1, a head tube 2, a seat tube 3 and a rear fork 4, the head tube is fixed at the front end of the frame beam, the rear fork includes a rear upper fork 41 and a rear lower fork 42, the rear lower fork is U-shaped, two tail ends of the rear lower fork are respectively connected with a rear fork piece 43, and a damping device 44 is arranged between the rear fork pieces and the rear upper fork; the five-way pipe 5 is fixed on the seat pipe, and the front end of the rear lower fork is hinged with the five-way pipe; the front end of the bottom plate 6 is fixed on the seat tube; a battery box 8 is arranged in a space formed by surrounding the seat tube, the front part of the rear upper fork and the bottom plate. The damping device 44 is any one of a damping spring, a pneumatic damper and a hydraulic damper. The five-way pipe 5 is used for penetrating through the axle center of the chain plate. And a battery body is arranged in the battery box.

The front end of the upper rear fork 41 is fixed to the seat tube 3, the upper rear fork is horizontally disposed, and two tail ends of the upper rear fork extend rearward and are connected by a tail tube 411. The front side of the five-way pipe is provided with a fixedly arranged base 51, and the front end of the rear lower fork 42 is tilted upwards and hinged with the base.

A cross bar 412 is arranged in the middle of the rear upper fork 41; the lower end of the side plate 7 is fixed on the bottom plate, and the upper end of the side plate is propped against the cross rod. Preferably, the side plates 7 are parallel to the axis of the seat tube 3, and the arrangement of the side plates ensures that the battery can be placed in or taken out smoothly and is labor-saving.

Further, the five-way pipe 5 is provided with a fixed hinged support 52, the lower end of the reinforced pipe 9 is hinged to the hinged support, and the upper end of the reinforced pipe is fixed to the vehicle beam. A shock absorber 10 is provided between the body frame 1 and the seat tube 3. So as to further strengthen the damping effect of the whole frame.

As shown in fig. 5 and 6, in another embodiment, a lower reinforcing tube 11 is fixedly arranged between the car beam 1 and the five-way tube 5, and an upper reinforcing tube 12 is fixedly arranged between the car beam and the seat tube. Meanwhile, the upper reinforcing tube 12 can also be used as a handle, which is very convenient when the vehicle needs to be moved.

Further, a locking device 13 is arranged on the vehicle beam 1, and the locking device is provided with a folding joint and a quick-release handle. So that the whole vehicle can be folded when needed to reduce the occupied area and facilitate storage. The locking device is an eccentric quick-release device which can be opened or closed, and the folding locking device on the folding bicycle belongs to the prior art and is not described herein any more.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an electric bicycle frame, includes car roof beam (1), head tube (2), seat pipe (3) and back fork (4), the head tube is fixed in car roof beam front end, its characterized in that: the rear fork comprises an upper rear fork (41) and a lower rear fork (42), the lower rear fork is U-shaped, two tail ends of the lower rear fork are respectively connected with a rear fork piece (43), and a damping device (44) is arranged between the rear fork piece and the upper rear fork; the five-way pipe (5) is fixed on the seat pipe, and the front end of the rear lower fork is hinged with the five-way pipe; the front end of the bottom plate (6) is fixed on the seat tube; a battery box (8) is arranged in a space formed by surrounding the seat tube, the front part of the rear upper fork and the bottom plate; the front end of the rear upper fork is fixed on the seat tube, the rear upper fork is horizontally arranged, and two tail ends of the rear upper fork extend backwards and are connected through a tail tube (411); the five-way pipe is provided with a fixedly arranged base (51), and the front end of the rear lower fork is tilted upwards and is hinged to the base.

2. The electric bicycle frame according to claim 1, characterized in that: a cross bar (412) is arranged in the middle of the rear upper fork; the lower end of the side plate (7) is fixed on the bottom plate, and the upper end of the side plate is propped against the cross rod.

3. The electric bicycle frame according to claim 1, characterized in that: the damping device is any one of a damping spring, a pneumatic damper and a hydraulic damper.

4. An electric bicycle frame as claimed in any one of claims 1 to 3, characterized in that: the five-way pipe is provided with a hinged support (52) which is fixedly arranged, the lower end of the reinforcing pipe (9) is hinged to the hinged support, and the upper end of the reinforcing pipe is fixed to the vehicle beam.

5. The electric bicycle frame of claim 4, wherein: a shock absorber (10) is arranged between the vehicle beam and the seat tube.

6. An electric bicycle frame as claimed in any one of claims 1 to 3, characterized in that: a lower reinforcing pipe (11) is fixedly arranged between the vehicle beam and the five-way pipe, and an upper reinforcing pipe (12) is fixedly arranged between the vehicle beam and the seat pipe.

7. An electric bicycle frame as claimed in any one of claims 1 to 3, characterized in that: the car beam is provided with a locking device (13) which is provided with a folding joint and a quick-release handle.

8. An electric bicycle frame as claimed in any one of claims 1 to 3, characterized in that: and a battery is arranged in the battery box.