CN201849582U - Bicycle frame - Google Patents

Abstract

The utility model discloses a bicycle frame, which comprises a middle tube. An upper tube is fixedly connected to one side of the middle tube and fixedly connected with a head tube, the head tube is fixedly connected with one end of a lower tube below the upper tube, the other end of the lower tube is connected with a five-way joint, the middle tube, the upper tube and the lower tube from a triangle, the lower end of the middle tube is fixedly connected with the five-way joint, two upper rear forks are fixedly connected to the other side of the middle tube, the upper rear forks are connected with clamping hooks, the clamping hooks are connected with one end of a lower rear fork, the other end of the lower rear fork is connected with the five-way joint, and the middle tube, the upper rear forks and the lower rear fork form a triangle. Connection relation among the middle tube, the upper tube and the lower tube is built reasonably, so that the middle tube, the upper tube and the lower tube form a triangular structure, while the middle tube, the upper rear forks and the lower rear fork also form the triangle, the triangular structure is the most stable structure, and thereby the bicycle frame is used for connecting main bearing components of a bicycle, and effective bearing capacity is enhanced.

Description

A kind of bicycle rack

Technical field

The utility model relates to a kind of link, relates in particular to a kind of bicycle rack that connects the two-wheeled cycle front and back wheel.

Background technology

Bicycle has become the indispensable vehicle in people's daily life, bicycle is made up of parts such as vehicle frame, tire, foot-operated, brake, chains, wherein vehicle frame is the skeleton of bicycle, it is the basic structure body that constitutes bicycle, miscellaneous part all is directly or indirectly to be installed on the vehicle frame, and vehicle frame generally adopts the normal carbon copper pipe through welding, combining.In order to alleviate pipe weight, improve intensity, owing to bicycle be rely on the propulsive effort of human body self and by bike technical ability exercise, can vehicle frame just become and bear impact load that bicycle produced under steam and the important structure body that deliver human body comfortable, safely, the quality of vehicle frame part accuracy of manufacture will directly influence ride safe, steady and brisk.

The utility model content

The utility model provides a kind of bicycle rack, to improve the loading strength of bicycle.

The technical solution of the utility model is: a kind of bicycle rack, comprise pipe in, pipe on the one side captive joint one of middle pipe, pipe of last pipe captive joint, pipe is a captive joint end of pipe once below last pipe, the other end captive joint five-way of following pipe, middle pipe, top tube and down tube are combined into triangle, the described five-way of lower end captive joint of middle pipe, the opposite side of middle pipe is fixedly connected with two Seat stays, and Seat stay is connected with trip, and trip connects an end of Chain stay, the other end of Chain stay connects five-way, and middle pipe, Seat stay and Chain stay are combined into triangle.

As of the present utility model a kind of preferred, middle pipe is the stainless steel tube of φ 30mm * 80cm, and last pipe is the stainless steel tube of φ 35mm * 120cm, and following pipe (4) is the stainless steel tube of φ 38mm * 140cm.

As of the present utility model a kind of preferred, the middle part of last pipe is provided with hook.

In sum, the utlity model has following advantage:

1, the utility model rationally is provided with the annexation of middle pipe, top tube and down tube, make the three form triangular structure, and middle pipe, Seat stay and Chain stay also are combined into triangle, triangular structure is stable structure, plays effective load-carrying capacity and is enhanced as connecting main load bearing component on the bicycle like this.

The length and the diameter of 2, the utility model is also preferred middle pipe, top tube and down tube have improved the load-carrying capacity of unit materials, have saved material, provide cost savings.

3, the utility model also is provided with hook, and the people that rides can hang article easily.

Description of drawings

Fig. 1 is a scheme drawing of the present utility model;

Fig. 2 is that A among Fig. 1 is to view.

Among the figure, 1, middle pipe; 2, go up pipe; 3, head pipe; 4, manage down; 5, five-way; 6, Seat stay; 7, trip; 8, Chain stay; 9, hook.

The specific embodiment

The utility model is described in further detail with embodiment below in conjunction with accompanying drawing.

As illustrated in fig. 1 and 2, a kind of bicycle rack comprises and manages 1 in one, manages 2 on the side captive joint one of middle pipe 1, on manage 2 middle part and be provided with hook 9.One of last pipe 2 captive joint pipe 3, head pipe 3 captive joint below last pipe 2 is managed an end of 4 once, the other end captive joint five-way 5 of following pipe 4, middle pipe 1, on manage 2 and manage 4 and be combined into triangle down.The lower end captive joint five-way 5 of middle pipe 1, the opposite side of middle pipe 1 is fixedly connected with two Seat stays 6, and Seat stay 6 is connected with trip 7, and trip 7 connects an end of Chain stays 8, the other end of Chain stay 8 connects five-way 5, and middle pipe 1, Seat stay 6 and Chain stay 8 are combined into triangle.In pipe 1 be the stainless steel tube of φ 30mm * 80cm, on manage 2 and be the stainless steel tube of φ 35mm * 120cm, following pipe 4 is the stainless steel tube of φ 38mm * 140cm.

More than explanation only is an explanation of the invention; make enforcement this programme that those of ordinary skills can be complete; but be not limitation of the present invention; those skilled in the art can make the modification that does not have creative contribution to present embodiment as required after reading this specification sheets, but as long as all are subjected to the protection of patent law in claim scope of the present invention.

Claims (3)

1. bicycle rack, comprise pipe (1) in, it is characterized in that: pipe (2) on the side captive joint one of pipe (1) in described, the described pipe pipe of (2) captive joint (3) of going up, described head pipe (3) below captive joint of pipe (2) on described is managed an end of (4) once, the described other end captive joint five-way (5) of pipe (4) down, pipe (1) in described, last pipe (2) and following pipe (4) are combined into triangle, the described five-way of lower end captive joint (5) of pipe (1) in described, the opposite side of pipe (1) is fixedly connected with two Seat stays (6) in described, described Seat stay (6) is connected with trip (7), described trip (7) connects an end of Chain stay (8), the other end of described Chain stay (8) connects described five-way (5), described middle pipe (1), Seat stay (6) and Chain stay (8) are combined into triangle.

2. a kind of bicycle rack according to claim 1, it is characterized in that: pipe (1) is the stainless steel tube of φ 30mm * 80cm in described, described upward pipe (2) is the stainless steel tube of φ 35mm * 120cm, and described pipe (4) down is the stainless steel tube of φ 38mm * 140cm.

3. a kind of bicycle rack according to claim 2 is characterized in that: described middle part of going up pipe (2) is provided with hook (9).

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