CN202783591U

CN202783591U - Bicycle frame

Info

Publication number: CN202783591U
Application number: CN 201220352011
Authority: CN
Inventors: 张岳
Original assignee: Yongqi (Changzhou) Vehicle Co Ltd
Current assignee: Yongqi (Changzhou) Vehicle Co Ltd
Priority date: 2012-07-19
Filing date: 2012-07-19
Publication date: 2013-03-13
Anticipated expiration: 2022-07-19

Abstract

The utility model relates to the technical field of bicycles, in particular to a bicycle frame which comprises an upper pipe, a middle pipe, a lower pipe, a head pipe, a bottom bracket and two symmetric rear forks. The head pipe is connected with the upper pipe and the lower pipe, the bottom bracket is connected with the lower end of the middle pipe and the lower end of the lower pipe, and each rear fork comprises an inclined pipe and a lower fork pipe. One end of each inclined pipe is connected with the middle pipe, the other end of each inclined pipe is connected with one end of the corresponding lower fork pipe through a hook claw, and the other end of each lower fork pipe is connected with the bottom bracket. The upper pipe, the middle pipe, the lower pipe and the rear forks are made of aluminum alloy, and an included angle formed between each inclined pipe and the corresponding lower fork pipe ranges from 40 degrees to 50 degrees. The bicycle frame is made of aluminum alloy, a finished product is light in total weight, the strength of a bicycle body is completely accordant with EN (European norm) test standards, the lightweight design better meets the requirements on global energy saving and carbon reduction, a rider can carry the bicycle body conveniently and more easily, and accordingly travelling flexibility of the bicycle is improved.

Description

Cycle frame

Technical field

The utility model relates to technical field of bicycles, is specifically related to a kind of cycle frame.

Background technology

Bicycle claims again bicycle or bicycle, normally the two small-sized land-going machines of taking turns.After the people rides car, take foot pedal as power, be the vehicle of environmental protection.In recent years, because the enhancing of people's environmental consciousness, bicycle is having deep love for of environmentalist colony extremely, but existing bicycle is heavier, and inconvenience is moved in trip.

The utility model content

For above-mentioned technical matters, the utility model provides a kind of cycle frame, and its weight is lighter, thereby has alleviated the overall weight of bicycle, is convenient to trip and moves, and improves the trip alerting ability of bicycle.

The realization the technical solution of the utility model is as follows:

Cycle frame, comprise pipe, middle pipe, lower pipe, the head pipe of pipe, lower pipe in the connection, and the five-way of managing lower end, lower pipe lower end in connecting, and two symmetrically arranged back vent, back vent comprises inclined tube, lower breeches pipe, and an end of inclined tube is connected with middle pipe, and the other end is connected by colluding pawl with an end of lower breeches pipe, the other end of lower breeches pipe is connected with five-way, described upper pipe, middle pipe, lower pipe, back vent are that aluminum alloy material is made, and have angle between described inclined tube and the lower breeches pipe, and angle is at 40 °～50 °.

Described angle is 46 °.

The cross sectional shape of described upper pipe is that an end diameter is large, the little elliptical shape of an end diameter.

Adopted such scheme, the utility model vehicle frame adopts aluminum alloy material to make, the finished product lower overall weight, and bus body strength meets the EN testing standard fully, the weight-saving design more meets global carbon reduction requirement, be convenient to simultaneously the rider and move car body, lighter, the trip alerting ability of raising bicycle.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation of five-way in the utility model;

Fig. 3 is the structural representation of first pipe in the utility model;

Among the figure, 1 is upper pipe, and 2 is middle pipe, and 3 is lower pipe, pipe headed by 4, and 5 is the installation site, and 6 is the installation site, and 7 is mounting hole, and 8 is five-way, and 9 is inclined tube, and 10 is lower breeches pipe, and 11 for colluding pawl.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is further specified.

Referring to Fig. 1,2,3, cycle frame, comprise pipe 1, middle pipe 2, lower pipe 3, the head of pipe 1, lower pipe 3 manages 4 in the connection, be fixedly installed the installation site 5 of installing pipe 1 end on the first pipe 4, and the installation site 6 of lower pipe 3 ends, installation site 5, installation site 6 are and protrude from the fixed cover that first pipe has mounting hole 7; And the five-way 8 of pipe 2 lower ends, lower pipe 3 lower ends in connecting, five-way has increased the design in the water hole that disappears, and the water of being convenient to disappear, is convenient to cabling, and brake and shift cable are hidden in the car body, and the protection cabling is aging, makes simultaneously outward appearance more attractive in appearance beautiful.

And two symmetrically arranged back vent, back vent comprises inclined tube 9, lower breeches pipe 10, one end of inclined tube is connected with middle pipe, the other end is connected by colluding pawl 11 with an end of lower breeches pipe, and the other end of lower breeches pipe is connected with five-way 8, and upper pipe, middle pipe, lower pipe, back vent are that aluminum alloy material is made, has angle α between inclined tube and the lower breeches pipe, angle is at 40 °～50 °, and in the implementation, angle can be: 40 °, 41 °, 42 °, 43 °, 44 °, 45 °, 46 °, 47 °, 48 °, 49 °, 50 °.The cross sectional shape of upper pipe is that an end diameter is large, the little elliptical shape of an end diameter, such as the water droplet shape.The body employing that relates in the vehicle frame is taken out Manifold technology and is made, and its light weight intensity is good.

Claims

1. cycle frame, comprise pipe, middle pipe, lower pipe, the head pipe of pipe, lower pipe in the connection, and the five-way of managing lower end, lower pipe lower end in connecting, and two symmetrically arranged back vent, back vent comprises inclined tube, lower breeches pipe, one end of inclined tube is connected with middle pipe, the other end is connected by colluding pawl with an end of lower breeches pipe, the other end of lower breeches pipe is connected with five-way, it is characterized in that: described upper pipe, middle pipe, lower pipe, back vent are that aluminum alloy material is made, and have angle between described inclined tube and the lower breeches pipe, and angle is at 40 °～50 °.

2. cycle frame according to claim 1, it is characterized in that: described angle is 46 °.

3. cycle frame according to claim 1 is characterized in that: the cross sectional shape of described upper pipe is that an end diameter is large, the little elliptical shape of an end diameter.