CN210592290U

CN210592290U - Electric bicycle frame

Info

Publication number: CN210592290U
Application number: CN201921047541.4U
Authority: CN
Inventors: 邢雄星
Original assignee: Jinhua Frey Power Technology Co ltd
Current assignee: Jinhua Frey Power Technology Co ltd
Priority date: 2019-07-07
Filing date: 2019-07-07
Publication date: 2020-05-22
Anticipated expiration: 2029-07-07

Abstract

The utility model relates to an electric bicycle frame, include: a motor base; the fixed seat is fixed on the motor seat; the middle pipe is fixed on the fixed seat; the first end of the first rotating connecting frame is rotatably arranged on the fixed seat; the rear upper fork is positioned behind the middle pipe and is rotationally connected with the second end of the first rotary connecting frame; the second rotating connecting frame is positioned above the first rotating connecting frame, the middle part of the second rotating connecting frame is rotatably connected with the fixed seat, and the rear end of the second rotating connecting frame is rotatably connected with the rear upper fork; one end of the shock absorber is rotationally connected with the front end of the second rotational connecting frame, and the other end of the shock absorber is rotationally connected with the motor base. After adopting such scheme for the support has better function of moving away to avoid possible earthquakes.

Description

Electric bicycle frame

Technical Field

The utility model relates to a bicycle rack especially relates to an electric bicycle rack.

Background

Electric bicycle frame is usually by well pipe, the upper tube, the low tube, the head pipe, back upper fork and motor cabinet are constituteed, the upper tube is connected between well pipe and head pipe, the low tube is located the below of upper tube, the one end of low tube also with the head union coupling, back upper fork is located the rear of well pipe, back upper fork's one end and well pipe fixed connection, the bottom of well pipe, the bottom of low tube and back upper fork's one end are all connected on the motor cabinet, the bottom installation motor of motor cabinet, a bottom installation motor for driving the main chain wheel rotates, the main chain wheel passes through the chain and drives the rotation of auxiliary chain wheel again, auxiliary chain wheel rotates the rotation that drives the rear wheel, thereby it advances to drive. However, the structure has the problem that the middle tube, the upper tube, the lower tube, the head tube, the rear upper fork and the motor base are fixedly connected, so that the shock-absorbing function is not provided, and the experience of a rider is poor.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an electric bicycle frame for the support has better function of moving away to avoid possible earthquakes.

In order to solve the technical problem, the utility model provides a technical scheme as follows:

an electric bicycle frame comprising: a motor base; the fixed seat is fixed on the motor seat; the middle pipe is fixed on the fixed seat; the first end of the first rotating connecting frame is rotatably arranged on the fixed seat; the rear upper fork is positioned behind the middle pipe and is rotatably connected with the second end of the first rotary connecting frame; the second rotating connecting frame is positioned above the first rotating connecting frame, the middle part of the second rotating connecting frame is rotatably connected with the fixed seat, and the rear end of the second rotating connecting frame is rotatably connected with the rear upper fork; and one end of the shock absorber is rotationally connected with the front end of the second rotating connecting frame, and the other end of the shock absorber is rotationally connected with the motor base.

Preferably: the chain wheel assembly is arranged on the motor base, and the chain wheel assembly is arranged on the motor base; the chain wheel assembly is respectively installed on an output shaft of the motor and the rear upper fork, and the chain is located right below the rotary connecting portion of the rear upper fork and the first rotary connecting frame.

Preferably: further comprising: a head tube located forward of the middle tube; the upper pipe is positioned between the head pipe and the middle pipe, and two ends of the upper pipe are respectively connected with the head pipe and the middle pipe; the lower pipe is located above the motor base, one end of the lower pipe is fixedly connected with the motor base, and the other end of the lower pipe is fixedly connected with the head pipe.

Preferably: the middle part that the link was rotated to the second is equipped with connecting portion, connecting portion with the fixing base rotates to be connected, connecting portion are the V type.

Preferably: the rear upper fork comprises two tripods and two connecting rods, and the connecting rods are connected between the tripods.

Preferably: the fixing base is U type, the shock absorber slope sets up, the one end of shock absorber stretches into in the fixing base.

The utility model has the advantages that: when the rear wheel lands, a supporting force is given to the rear end of the rear upper fork, so that the rear end of the rear upper fork rotates upwards, the rear upper fork is connected with the second rotating connecting frame, the rear upper fork gives the second rotating connecting frame with the supporting force, the second rotating connecting frame rotates, the second rotating connecting frame is connected with the shock absorber, the shock absorber stretches out and draws back, and the rear upper fork has a shock absorbing function.

Drawings

The invention will be further explained with reference to the drawings and the detailed description below:

fig. 1 is a first schematic structural view of a first embodiment of an electric bicycle frame according to the present invention;

fig. 2 is a schematic structural view of a first embodiment of an electric bicycle frame according to the present invention;

fig. 3 is a third schematic structural view of a first embodiment of the electric bicycle frame according to the present invention;

FIG. 4 is a schematic structural view of a second rotating link according to the first embodiment;

fig. 5 is a schematic partial structural view of a first embodiment of the electric bicycle frame according to the present invention;

fig. 6 is a first schematic structural view of a second embodiment of the electric bicycle frame according to the present invention;

fig. 7 is a second schematic structural view of a second embodiment of the electric bicycle frame according to the present invention.

Wherein:

1. a motor base;

2. a fixed seat;

3. a middle tube;

4. a first rotating link;

5. a rear upper fork;

6. a second rotating link; 61. a connecting portion;

7. a shock absorber;

8. a motor;

9. a sprocket assembly;

10. a chain;

11. a head pipe;

12. feeding a pipe;

13. and a lower pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the positional and orientational relationships indicated as "upper", "lower", "left", "right", "front", "rear", "vertical", "bottom", "inner", "outer", etc. are based on the positional and orientational relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The first embodiment is as follows:

as shown in fig. 1 to 5, an electric bicycle frame includes:

a motor base 1;

the fixed seat 2 is fixed on the motor base 1;

the middle pipe 3 is fixed on the fixed seat 2;

the first end of the first rotating connecting frame 4 is rotatably arranged on the fixed seat 2;

the rear upper fork 5 is positioned behind the middle pipe 3, and the rear upper fork 5 is rotatably connected with the second end of the first rotary connecting frame 4;

the second rotating connecting frame 6 is positioned above the first rotating connecting frame 4, the middle part of the second rotating connecting frame 6 is rotatably connected with the fixed seat 2, and the rear end of the second rotating connecting frame 6 is rotatably connected with the rear upper fork 5;

and one end of the shock absorber 7 is rotatably connected with the front end of the second rotary connecting frame 6, and the other end of the shock absorber 7 is rotatably connected with the motor base 1.

Thus, when the rear wheel lands, a supporting force is given to the rear end of the rear upper fork 5, so that the rear end of the rear upper fork 5 rotates upwards, the rear upper fork 5 is connected with the second rotating connecting frame 6, the rear upper fork 5 gives the second rotating connecting frame 6 a supporting force, the second rotating connecting frame 6 rotates, the second rotating connecting frame 6 is connected with the shock absorber 7, the shock absorber 7 stretches out and draws back, and the rear upper fork 5 has a shock absorption function.

In addition, the method further comprises the following steps:

a head pipe 11, wherein the head pipe 11 is positioned in front of the middle pipe 3;

the upper pipe 12 is positioned between the head pipe 11 and the middle pipe 3, and two ends of the upper pipe 12 are respectively connected with the head pipe 11 and the middle pipe 3;

and the lower pipe 13, the lower pipe 13 is positioned above the motor base 1, one end of the lower pipe 13 is fixedly connected with the motor base 1, and the other end of the lower pipe 13 is fixedly connected with the head pipe 11.

In addition, the middle part of the second rotary connecting frame 6 is provided with a connecting part 61, the connecting part 61 is rotatably connected with the fixed seat 1, and the connecting part 61 is in a V shape.

Therefore, the second rotating connecting frame 6 and the fixed seat 1 can be ensured to have higher connecting strength, and the structure is compact.

In addition, the rear upper fork 5 includes two tripods and two connecting rods, and the connecting rods are connected between the tripods.

In addition, the fixed seat 2 is U-shaped, the shock absorber 7 is obliquely arranged, and one end of the shock absorber 7 extends into the fixed seat 2.

Thus, the strength of the fixing base 2 is high, the shock absorber 7 can be conveniently placed, the overall structure of the fixing base 2 and the shock absorber 7 is compact, and meanwhile, the shock absorber 7 is arranged in an inclined mode, so that the stroke of the shock absorber 7 is larger, and a better shock absorbing effect is achieved.

Example two:

as shown in fig. 6 and 7, in this embodiment, the electric motor 8, the sprocket assembly 9 and the chain 10 are further included, and the electric motor 8 is fixed on the motor base 1; the chain wheel assembly 9 is respectively installed on the output shaft of the motor 8 and the rear upper fork 5, and the chain 10 is positioned right below the rotating connection part of the rear upper fork 5 and the first rotating connecting frame 4.

Thus, at the instant when the motor 8 is rapidly started, the chain 10 will generate a pulling force on the chain wheel assembly 9 installed at the rear end of the rear upper fork 5, and then a pulling force is given to the rear upper fork 5, in the conventional frame, since the rotational joint of the rear upper fork 5 and the first rotational connecting frame 4 is not overlapped with the chain 10 in the projection from top to bottom, and there is a gap, and the rotational joint of the rear upper fork 5 and the first rotational connecting frame 4 is in clearance fit, the rear upper fork 5 will generate a large swing, i.e. a swing, at the instant when the motor 8 is started, and when the rear upper fork 5 is directly below the rotational connecting portion of the first rotational connecting frame 4, as shown in a in fig. 6, the rear upper fork will not swing, and thus the potential safety hazard is avoided.

In summary, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. An electric bicycle frame, comprising:

a motor base;

the fixed seat is fixed on the motor seat;

the middle pipe is fixed on the fixed seat;

the first end of the first rotating connecting frame is rotatably arranged on the fixed seat;

the rear upper fork is positioned behind the middle pipe and is rotatably connected with the second end of the first rotary connecting frame;

the second rotating connecting frame is positioned above the first rotating connecting frame, the middle part of the second rotating connecting frame is rotatably connected with the fixed seat, and the rear end of the second rotating connecting frame is rotatably connected with the rear upper fork;

and one end of the shock absorber is rotationally connected with the front end of the second rotating connecting frame, and the other end of the shock absorber is rotationally connected with the motor base.

2. The electric bicycle frame according to claim 1, characterized in that: the chain wheel assembly is arranged on the motor base, and the chain wheel assembly is arranged on the motor base; the chain wheel assembly is respectively installed on an output shaft of the motor and the rear upper fork, and the chain is located right below the rotary connecting portion of the rear upper fork and the first rotary connecting frame.

3. The electric bicycle frame according to claim 1 or 2, characterized in that: further comprising:

a head tube located forward of the middle tube;

the upper pipe is positioned between the head pipe and the middle pipe, and two ends of the upper pipe are respectively connected with the head pipe and the middle pipe;

the lower pipe is located above the motor base, one end of the lower pipe is fixedly connected with the motor base, and the other end of the lower pipe is fixedly connected with the head pipe.

4. The electric bicycle frame according to claim 1 or 2, characterized in that: the middle part that the link was rotated to the second is equipped with connecting portion, connecting portion with the fixing base rotates to be connected, connecting portion are the V type.

5. The electric bicycle frame according to claim 1 or 2, characterized in that: the rear upper fork comprises two tripods and two connecting rods, and the connecting rods are connected between the tripods.

6. The electric bicycle frame according to claim 1 or 2, characterized in that: the fixing base is U type, the shock absorber slope sets up, the one end of shock absorber stretches into in the fixing base.