CN201849584U

CN201849584U - Two-person bicycle stand

Info

Publication number: CN201849584U
Application number: CN2010205939901U
Authority: CN
Inventors: 曹永亮
Original assignee: YONGDA BICYCLE COMPONENT (HUZHOU) CO Ltd
Current assignee: YONGDA BICYCLE COMPONENT (HUZHOU) CO Ltd
Priority date: 2010-11-05
Filing date: 2010-11-05
Publication date: 2011-06-01
Anticipated expiration: 2020-11-05

Abstract

The utility model relates to a two-person bicycle stand, which belongs to the technical field of a bicycle stand and comprises a head pipe, an upper pipe, a middle pipe, a lower pipe, an upper fork, a lower fork and a five-way, wherein the middle of the upper pipe is also fixed with a saddle pipe; the middle of the lower pipe is provided with a four-way; one end of the upper pipe and one end of the lower pipe are fixed on the five-way together, and the upper pipe is integrally connected with the lower pipe; and a reinforcing rod is arranged between the middle pipe and the upper pipe. The two-person bicycle stand has the advantage of high connection strength.

Description

The tandem bicycle frame

Technical field

The utility model relates to a kind of tandem bicycle frame, belongs to the bicycle rack technical field.

Background technology

Existing tandem bicycle frame only is the top tube and down tube lengthening with the ordinary bicycle frame, what seat pipe of increase formed on last pipe then.Itself Joint strenght of existing bicycle rack is not fine just, and Jia Chang words just make that Joint strenght is poorer again.

The utility model content

The purpose of this utility model is for solving the problems of the technologies described above, a kind of tandem bicycle frame being provided.

Above-mentioned technical purpose of the present utility model is achieved by the following technical programs:

The tandem bicycle frame, comprise head pipe, go up pipe, middle pipe, down pipe, go up fork, lower fork and five-way, describedly also be fixed with a pipe in the middle part of going up pipe; Following pipe middle part also is provided with a four-way, and a wherein end of last pipe is fixed on the five-way jointly with a wherein end of following pipe, and the top tube and down tube one connects; Also be provided with a stirrup between middle pipe and the last pipe.

Existing tandem bicycle frame is carried out force analysis as can be known, because lengthening, make the top tube and down tube easy fracture that becomes.And in the utility model technique scheme, the point of connection of last Guan Yuzhong pipe is moved down, between middle pipe and last pipe, also be provided with a stirrup; And the top tube and down tube one is connected; These structure Design make Joint strenght of the present utility model be improved.

In the technique scheme, stirrup be arranged so that structure of the present utility model is more stable; Four-way and five-way then are used to be provided with pedal assembly; The top of middle pipe is used to be provided with bench, and a seat Guan Ze is used to be provided with another bench.

Preferred as technique scheme, the described length that goes up pipe is 1.0～1.5m, last pipe is 135～150 ° with the angle of lower fork formation.

In sum, the utlity model has following beneficial effect:

The utlity model has the high advantage of Joint strenght.

Description of drawings

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

Among the figure, 1-head pipe, the last pipe of 2-is managed among the 3-, and 4-is pipe down, the last fork of 5-, 6-lower fork, 7-five-way, 8-seat pipe, 9-four-way, 10-stirrup.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

This specific embodiment only is to explanation of the present utility model; it is not to restriction of the present utility model; 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 utility model.

As shown in Figure 1, the tandem bicycle frame, comprise head pipe (1), go up pipe (2), middle pipe (3), down pipe (4), go up fork (5), lower fork (6) and five-way (7), describedly also be fixed with a pipe (8) in the middle part of going up pipe (2); Following pipe (4) middle part also is provided with a four-way (9), and a wherein end of last pipe (2) is fixed on the five-way (7) jointly with a wherein end of managing (4) down; And the top tube and down tube one connects; Also be provided with a stirrup (10) between middle pipe (3) and the last pipe (2), the described length that goes up pipe (2) is 1.5m, and the angle that last pipe (2) and lower fork (6) form is 135 °.

Claims

1. tandem bicycle frame, comprise head pipe (1), go up pipe (2), middle pipe (3), down pipe (4), go up fork (5), lower fork (6) and five-way (7), it is characterized in that: describedly also be fixed with a pipe (8) in the middle part of going up pipe (2); Following pipe (4) middle part also is provided with a four-way (9), and a wherein end of last pipe (2) is fixed on the five-way (7) jointly with a wherein end of managing (4) down; And the top tube and down tube one connects; Also be provided with a stirrup (10) between middle pipe (3) and the last pipe (2).

2. tandem bicycle frame according to claim 1 is characterized in that: the described length that goes up pipe (2) is 1.0～1.5m, and last pipe (2) is 135～150 ° with the angle that lower fork (5) forms.