CN2601919Y

CN2601919Y - Bicycle rack

Info

Publication number: CN2601919Y
Application number: CN 02262237
Authority: CN
Inventors: 杨通河
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-23
Filing date: 2002-09-23
Publication date: 2004-02-04
Anticipated expiration: 2012-09-23

Abstract

The utility model relates to a bicycle frame. A bicycle beam 1 is a flat tube and is extended to form an integrated structure with a rear fork 2, a middle axle casing 3 and an upright tube 4 are welded in the transition position of the bicycle beam and the rear fork. A rib or a hole 5 can be arranged on the rear fork, the hole5 can be turned over the edge, the rear fork edge can be provided with a curled edge 7, and thereby increases the intensity or reduces the weight, and the bicycle frame with an integrated structure can be punched through the metal material. The utility model has the advantages that the structure is simple, the cost is low, and the production is convenient, etc.

Description

A kind of bicycle rack

Affiliated technical field

The utility model relates to a kind of bicycle rack.

Background technology

Existing bicycle rack is welded by tubing, its complex structure, and cost is higher.

Summary of the invention

The purpose of this utility model provides a kind of simple in structure, with low cost, easily manufactured bicycle rack.

The utility model is achieved in that the car beam is that a flat tube and extension and back vent are structure as a whole, car beam and back vent transition position welding intermediate axle housing and standpipe; Rib or hole are arranged on the back vent, and can there be crimping at the back vent edge, to gain in strength; The back vent mouth can by lower edge on the back vent end, upwards amount to form double-decker respectively downwards, to gain in strength, has avoided welding in addition the back vent mouth simultaneously again.The vehicle frame of integrative-structure can be by a metallic plate punching that is roughly rectangle, be welded.

The utlity model has simple in structure, cost is low, advantage such as easily manufactured.

Description of drawings

Fig. 1 is a front view of the present utility model;

Fig. 2 is that Fig. 1 back vent A-A is to cutaway view;

Fig. 3 is that Fig. 1 back vent mouth B-B is to cutaway view;

Fig. 4 is the front view after the utility model is assembled into car load;

Fig. 5 is a birds-eye view of the present utility model;

Fig. 6 is a back view of the present utility model;

Fig. 7 is the blanking figure of the utility model during by the metallic material punching press.

The specific embodiment

Below in conjunction with drawings and Examples it is described further.

See Fig. 1, Fig. 2, Fig. 4, Fig. 5 and Fig. 6, car beam 1 is that a flat tube and extension and back vent 2 are structure as a whole, car beam and back vent transition position welding intermediate axle housing 3 and standpipe 4; Establish rib or hole 5 on the back vent, hole 5 flangables, there is crimping 7 at the back vent edge, to gain in strength.

See Fig. 3, back vent mouth 6 can by lower edge on the back vent end, upwards amount to form double-decker 8 respectively downwards, to gain in strength, has avoided welding in addition the back vent mouth simultaneously again.

See Fig. 7, the vehicle frame of integrative-structure can be by a metallic plate punching that is roughly rectangle, be welded.

Claims

1. a bicycle rack comprises car beam, standpipe, back vent, it is characterized in that:

A. car beam 1 is that a flat tube and extension and back vent 2 are structure as a whole;

B. the car beam of integrative-structure and back vent are that metal sheet stamping forms.

2. bicycle rack as claimed in claim 1 is characterized in that there is crimping at its edge of back vent of metallic material punching press.

3. bicycle rack as claimed in claim 1 or 2 is characterized in that rib is arranged on the back vent.

4. as each described bicycle rack of claim 1-3, it is characterized in that on the back vent porose.

5. bicycle rack as claimed in claim 4 is characterized in that there is flange in the hole on the back vent.

6. as each described bicycle rack of claim 1-5, it is characterized in that the back vent mouth be on the back vent end lower edge respectively downwards, the double-decker upwards amounted to.