CN201080232Y

CN201080232Y - Rear frame for bicycle

Info

Publication number: CN201080232Y
Application number: CNU2007201516408U
Authority: CN
Inventors: 尤国品
Original assignee: Yuan Min An Enterprise Co Ltd
Current assignee: Yuan Min An Enterprise Co Ltd
Priority date: 2007-06-19
Filing date: 2007-06-19
Publication date: 2008-07-02
Anticipated expiration: 2017-06-19

Abstract

The utility model relates to a rear bicycle frame of the bicycle, which comprises two long pipes and a connecting part. The long pipes with equal length are made of fiber reinforced material, the connecting part is connected between the two long pipes, wherein, at least one rib plate is arranged in the long pipes, therefore, the overall structural strength not only can be enhanced, the required strength but also can be achieved through using a small amount of material, so as to reduce the weight.

Description

The back vehicle frame of bicycle

Technical field

The utility model is relevant with bicycle, is meant a kind of back vehicle frame of bicycle especially, and its mechanical strength is high and in light weight.

Background technology

The back vehicle frame of Regular Bicycle includes back vent and lower fork, both structures are roughly the same, all include two and slightly be parallel pipe portion, and a connecting portion between this two pipes portion, be expendable weight, at present existing dealer adopts the carbon fiber reinforcement material to make the back vehicle frame, during assembling, back vent and lower fork are to use to connect for rear wheel to establish, therefore, must bear vibrations from rear wheel, long-term use causes the damage of structure easily, and particularly pipe portion often ruptures, situations such as jag are if improve structural strength, then need add the consumption of fiber weaving cloth, this measure can increase single-piece weight again.

The utility model content

A purpose of the present utility model is to provide a kind of back vehicle frame of bicycle, and is not only in light weight and mechanical strength is high.

Take off purpose for before reaching, the back vehicle frame of a kind of bicycle that the utility model provides is characterized in that, is to include:

Two long tubes are to be made by fiber reinforced material; And

A junction is arranged between this two long tube;

Wherein, has at least one floor in this long tube.

Wherein the number of this floor is one, and this long tube inside is divided into two rooms by this floor.

Wherein this two long tube is positioned at same plane in fact, and this floor is parallel to this plane in fact.

Wherein this two long tube is positioned at same plane in fact, and this floor is in fact perpendicular to this plane.

Wherein the number of this floor is three, is extended internally by the inwall of this long tube respectively and converges at a line, and this long tube inside is divided into three rooms by these floors.

Wherein the number of this floor is four, is extended internally by the inwall of this long tube respectively and converges at a line, and this long tube inside is divided into four rooms by these floors.

Wherein this connecting portion is a body.

Wherein be provided with the foaming heartwood in this body.

The beneficial effects of the utility model are:

The back vehicle frame of bicycle of the present utility model, not only in light weight and mechanical strength is high.

Description of drawings

In order to describe structure of the present utility model and characteristics place in detail, below in conjunction with five preferred embodiments and conjunction with figs. explanation as after, wherein:

Fig. 1 is the front elevation of the utility model first preferred embodiment;

Fig. 2 is the cutaway view of Fig. 1 along the 2-2 direction;

Fig. 3 is the cutaway view of Fig. 1 along the 3-3 direction;

The cutaway view of Fig. 4 the utility model second preferred embodiment;

The cutaway view of Fig. 5 the utility model the 3rd preferred embodiment;

The cutaway view of Fig. 6 the utility model the 4th preferred embodiment;

The cutaway view of Fig. 7 the utility model the 5th preferred embodiment.

The specific embodiment

See also Fig. 1 to Fig. 3, the back vehicle frame 10 of the bicycle that the utility model first preferred embodiment is provided is to include two long tubes 20 and a junction 30, and this back vehicle frame 10 can be back vent or lower fork, in order to connect the seat pipe and the trailing wheel of bicycle.

This two long tube 20 is to be made by fibre reinforced resin, fiber can adopt and be not limited to carbon fiber, glass fibre, boron fiber or Ke Weila (Kevlar) fiber, resin can be thermosetting resin or thermoplastic base resin, this two long tube 20 is positioned at same plane P haply, respectively has a floor 22 respectively in this long tube 20, these long tube 20 inside are divided into two rooms 24 by this floor 22, and this floor 22 is approximately perpendicular to this plane P.

30 of this connecting portions are arranged between this two long tube 20, in order to this two long tube 20 is linked together, this connecting portion 30 is bodys of being made by fibre reinforced resin, during actual the manufacturing, be earlier with two long tubes, 20 hardened formings, then utilize the fiber weaving cloth of pre-soaked resin to be wound into the attaching parts 32 of a tubulose, this attaching parts 32 is placed between two long tubes 20, then utilize the fiber weaving cloth 34 of a pre-soaked resin that this attaching parts 32 and this two long tube 20 are coated, heat hardening moulding again can form this connecting portion 30 between this two long tube 20.

Can significantly increase the mechanical strength of this long tube 20 by this floor 22, make this long tube 20 can bear bigger external force, particularly from the external force of vertical this plane P, therefore, need not increase the consumption of fibre reinforced resin, can strengthen back vehicle frame 10 integrally-built mechanical strengths, perhaps, use less material can reach required structural strength, the back vehicle frame 10 that the utility model is provided has the high and lightweight advantage of mechanical strength concurrently, can improve the shortcoming of known structure, and reach the purpose of this utility model.

Based on spirit of the present utility model, the shape of this floor 22 has multiple variation pattern, as shown in Figure 4, it is the back vehicle frame 40 that the utility model second preferred embodiment is provided, have a floor 44 in its long tube 42, this floor 44 is the plane P that are parallel to two long tubes, 42 places approximately, thus, the structural strength of this long tube 42 can significantly improve and can bear bigger external force, particularly from the external force that is parallel to this plane P.

And for example shown in Figure 5, it is the back vehicle frame 50 that the utility model the 3rd preferred embodiment is provided, having trislab 54 in its long tube 52 is extended internally by the inwall of this long tube 52 respectively and converges at a line L, these long tube 52 inside are divided into three rooms 56 by these floors 54, thus, can evenly promote the structural strength of these long tube 52 all directions.

Again as shown in Figure 6, it is the back vehicle frame 60 that the utility model the 4th preferred embodiment is provided, having four floors 64 in its long tube 62 is extended internally by the inwall of this long tube 62 respectively and converges at a line L, these long tube 62 inside are divided into four rooms 66 by these floors 64, thus, can promote the structural strength of these long tube 62 all directions more equably.

In addition, the structure of connecting portion and method for making also have the possibility of multiple variation, as shown in Figure 7, the back vehicle frame 70 that the utility model the 5th preferred embodiment is provided, have two long tubes 72 and a junction 74, its method for making is earlier with two long tubes, 72 hardened formings, then between this two long tube 72, put the attaching parts 76 that a foaming heartwood is made, utilize the fiber weaving cloth 78 of a pre-soaked resin that this attaching parts 76 and this two long tube 72 are coated again, the fiber weaving cloth 78 of this pre-soaked resin promptly forms a body 79, can form this connecting portion 74 after the heat hardening moulding between this two long tube 72.

The structural change that every these easy full of beard reach all should be the utility model claim and contains.

Claims

1. the back vehicle frame of a bicycle is characterized in that, is to include:

Two long tubes are to be made by fiber reinforced material; And

A junction is arranged between this two long tube;

Wherein, has at least one floor in this long tube.

2. the back vehicle frame of bicycle according to claim 1 is characterized in that wherein the number of this floor is one, and this long tube inside is divided into two rooms by this floor.

3. as the back vehicle frame of bicycle as described in the claim 2, it is characterized in that wherein this two long tube is positioned at same plane in fact, this floor is parallel to this plane in fact.

4. as the back vehicle frame of bicycle as described in the claim 2, it is characterized in that wherein this two long tube is positioned at same plane in fact, this floor is in fact perpendicular to this plane.

5. the back vehicle frame of bicycle according to claim 1 is characterized in that wherein the number of this floor is three, is extended internally by the inwall of this long tube respectively and converges at a line, and this long tube inside is divided into three rooms by these floors.

6. the back vehicle frame of bicycle according to claim 1 is characterized in that wherein the number of this floor is four, is extended internally by the inwall of this long tube respectively and converges at a line, and this long tube inside is divided into four rooms by these floors.

7. the back vehicle frame of bicycle according to claim 1 is characterized in that wherein this connecting portion is a body.

8. as the back vehicle frame of bicycle as described in the claim 7, it is characterized in that, wherein be provided with the foaming heartwood in this body.