CN201080227Y

CN201080227Y - Folding bicycle

Info

Publication number: CN201080227Y
Application number: CNU2007200550562U
Authority: CN
Inventors: 颜顺情
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-01
Filing date: 2007-08-01
Publication date: 2008-07-02
Anticipated expiration: 2017-08-01

Abstract

The utility model relates to a folding bicycle, which comprises a bicycle frame, a front wheel, a rear wheel, handlebars, a seat cushion, foot pedals, a driving chain wheel synchronously rotating with the foot pedals and a driven chain wheel coaxially arranged with the rear wheel, and the driving chain and the driven chain are connected with through a chain. The bicycle frame comprises a front supporting frame respectively provided with the front wheel and the handlebars at the both ends, and a rear supporting frame provided with the seat cushion at the upper end part, the front supporting frame and the rear supporting frame are connected through a connecting rod, the connecting rod and the front supporting frame are movably connected through a first rotating shaft, and the connecting rod and the front supporting frame are fixedly connected, a movable rod is also movably installed on the front supporting frame, the upper end of the movable rod is movably connected with the front supporting frame through a sliding sleeve arranged on the front supporting frame in a sliding way, the middle part of the movable rod is movably connected with the connecting rod through a second rotating shaft, the rear wheel is installed at the lower end part of the movable rod, and the driving chain wheel is installed on the movable rod. The utility model has the advantages that the structure is simple, the utility model can realize the folding of the bicycle through the structure similar to scissors, the folding is convenient and rapid, and the utility model can still stand and freely slide after being folded, can be stored, carried, and moved more conveniently.

Description

A kind of folding bicycle

Technical field

The utility model relates to a kind of bicycle, specifically a kind of folding bicycle.

Background technology

Bicycle occurs still being widely loved by the people so far from it as a kind of popular traffic, fitness tool.In recent years, along with the needs of people life, Foldable bicycle appears in people's the life, and, when depositing take up room advantage such as little light, easy to carry with it enjoys people to welcome.

In the existing folding bicycle, its folded form is generally laterally folded, that is, vehicle frame partly is divided into front and back two parts of flexible connection by turning joint, and front and back wheel is installed on respectively in the two parts of front and back.When folding, front and back two parts are laterally folded relatively by turning joint, reduced the length of whole locomotive body.Though it is all more convenient that the existing relatively non-folding bicycle of the folding bicycle of this form carries and deposits, part still comes with some shortcomings.As, after folding, whole bicycle could move after only lifting from ground, moves inconvenience, and can not stand voluntarily; When needs launch or fold, because turning joint is generally tighter, need bigger strength could bend or fold, it is not quite convenient to use.

The utility model content

The technical problems to be solved in the utility model provides the folding bicycle that a kind of structure is simpler, use is convenient.

According to above-mentioned technical requirements, the utility model is realized by the following technical solutions:

A kind of folding bicycle, comprise vehicle frame and be installed on front-wheel on the vehicle frame, trailing wheel, handle, seat cushion, foot-operated, with the foot-operated driven sprocket that rotates drive sprocket and be provided with synchronously with the trailing wheel concentric, be connected by chain between drive sprocket and the driven sprocket.Described vehicle frame comprises that both ends install the after poppet that seat cushion is installed in the front frame of front vehicle wheel and handlebar and upper end respectively, be connected by a pipe link between front frame and after poppet, flexibly connect by first rotating shaft between pipe link and front frame, between pipe link and after poppet then for captiveing joint, on front frame, also be movably installed with a portable bar, the portable bar upper end flexibly connects by a sliding sleeve and a front frame that is slidedly arranged on the front frame, the portable bar middle part flexibly connects by second rotating shaft and pipe link, trailing wheel is installed on the portable bar bottom, and drive sprocket is installed on the portable bar.

As improvement to such scheme, also be provided with extension rod in the portable bar bottom, the extension rod end is provided with two support wheels, and two support wheels lay respectively at the trailing wheel both sides.During folded state, two bogie wheel positions are lower than trailing wheel, form the triangle supporting form of the whole bicycle of the common supporting of two trailing wheels and front-wheel, even whole bicycle also can steadily be stood at folded state, and can be free to slide.

As further improvement of these options, described portable bar is arranged side by side two, lays respectively at pipe link and trailing wheel both sides, is installed with the supporting base of accepting the after poppet bottom on pipe link.Be connected by the 3rd rotating shaft between sliding sleeve and the portable bar, sliding sleeve is provided with the coes wrench of regulating sliding sleeve hoop cover front frame tightness.When launching running condition, the after poppet lower end presses closer on supporting base, and front frame and portable bar are then realized the fixing of relative position by the coes wrench on the fastening sliding sleeve.

The utility model is simple in structure, and to realize the folding of bicycle with the scissors similar structures, folding convenient is quick, and still can support oneself, be free to slide after folding, deposits, carries and move convenient.

Description of drawings

Accompanying drawing 1 is the utility model embodiment running condition perspective view;

Accompanying drawing 2 is visual angle, a present embodiment running condition side structural representation;

Accompanying drawing 3 is a present embodiment folded state perspective view;

Accompanying drawing 4 is visual angle, a present embodiment folded state side structural representation.

The specific embodiment

For the ease of those skilled in the art's understanding, will tie specific embodiment and accompanying drawing below the utility model structural principle will be described in further detail:

Shown in accompanying drawing 1～4, the Folding Bicycle that this programme disclosed mainly comprises vehicle frame, wheel, handle 12, seat cushion 11 and transmission device composition.Vehicle frame mainly comprises front frame 3, after poppet 4 and the pipe link 2 that connects front frame 3 and after poppet 4.Wherein, in front frame 3 upper ends handle 12 is installed, the lower end is equipped with front-wheel 5, is provided with a U-iron 27 at front frame 3 near front-wheel 5 positions, and one first rotating shaft 21 is installed on the U-iron, and pipe link 2 front ends flexibly connect by first rotating shaft 21 and front frame 3.For fixing welding, in after poppet 4, be interspersed with the bench hassock tube 41 that a upper end is fixed with seat cushion 11 between after poppet 4 and the pipe link 2, also be provided with a coes wrench 25 of regulating bench hassock tube 41 height at the after poppet 4 upper end mouths of pipe.

Partly even, the straight slide bar portion of size between U-iron 27 and handle 12 in the front frame 3.Hoop is with a sliding sleeve 15 that can slide up and down along slide bar portion in the slide bar portion, is fixed with the stop collar 26 of restriction sliding sleeve 15 downslide positions in slide bar portion upper end, lower end, and sliding sleeve 15 is provided with a coes wrench 25 that sliding sleeve 15 can be tightened in slide bar portion.Sliding sleeve 15 also flexibly connects a portable bar 1 by the 3rd rotating shaft 24.Portable bar 1 flexibly connects by second rotating shaft 22 and pipe link 2 medium positions, makes the annexation that forms similar scissors between portable bar 1 and the pipe link 2.Described portable bar 1 is two that are set up in parallel, and lays respectively at pipe link 2 both sides.In portable bar 1 lower end trailing wheel 6 is installed, is positioned at the supporting base 23 that place, position, after poppet 4 bottom also is fixed with a supporting after poppet 4 lower ends at portable bar 1.Simultaneously, portable bar 1 bottom and trailing wheel 6 axis connection locations also are fixed with the extension rod 13 that extends and exceed trailing wheel 6 diameters, and extension rod 13 ends then are equipped with bogie wheel 14.

Be connected by chain between foot-operated 7 and the driven sprockets 9 that rotate synchronously with trailing wheel 6 that the described transmission device of this programme comprises the drive sprocket 8 that is installed on the portable bar 1, installs with drive sprocket 8 concentrics, drive sprocket 8 and driven sprocket 9.The necessary parts of other of bicycle wait as brake can be consistent with structure in the existing bicycle and installation form, no longer relates inferior.

When launching running condition, front-wheel 5 is bigger with trailing wheel 6 spacings, and after poppet 4 lower ends are supported on the supporting base 23, and sliding sleeve 15 is located adjacent to U-iron 27 positions by the restriction of coes wrench 25.Form two stable triangles between this state front frame 3, after poppet 4 and pipe link 2, the portable bar 1, whole vehicle frame fixed in shape can be born by the downward load that applies on the seat cushion 11.When closing up folded state, unclamp the coes wrench 25 on the sliding sleeve 15, from the bottom up to after poppet 4 application of forces, sliding sleeve 15 drives 1 of portable bar and can upwards slide along slide bar portion, after poppet 4 is moved up, and simultaneously spacing reduces between front-wheel 5 and the trailing wheel 6, until bogie wheel 14 kiss the earths and trailing wheel 6 built on stilts, then can lock the coes wrench 25 on the sliding sleeve 15 this moment, makes whole vehicle frame keep folded state.Whole bicycle can stably erect under the supporting of front-wheel 5 and two bogie wheels 14, and can move flexibly.

Claims

1. folding bicycle, comprise vehicle frame and be installed on front-wheel (5) on the vehicle frame, trailing wheel (6), handle (12), seat cushion (11), foot-operated (7), with the foot-operated driven sprocket (9) that rotates drive sprocket (8) and be provided with synchronously with the trailing wheel concentric, be connected by chain between drive sprocket and the driven sprocket, it is characterized in that: described vehicle frame comprises that both ends install the after poppet (4) that seat cushion is installed in the front frame of front vehicle wheel and handlebar (3) and upper end respectively, be connected by a pipe link (2) between front frame and after poppet, flexibly connect by first rotating shaft (21) between pipe link and front frame, between pipe link and after poppet then for captiveing joint, on front frame, also be movably installed with a portable bar (1), the portable bar upper end flexibly connects with front frame by a sliding sleeve (15) that is slidedly arranged on the front frame, the portable bar middle part flexibly connects by second rotating shaft (22) and pipe link, trailing wheel is installed on the portable bar bottom, and drive sprocket is installed on the portable bar.

2. folding bicycle according to claim 1 is characterized in that: also be provided with extension rod (13) in the portable bar bottom, the extension rod end is provided with two support wheels (14), and two support wheels lay respectively at the trailing wheel both sides.

3. folding bicycle according to claim 2 is characterized in that: described portable bar is arranged side by side two, lays respectively at pipe link and trailing wheel both sides, is installed with the supporting base (23) of accepting the after poppet bottom on pipe link.

4. folding bicycle according to claim 3 is characterized in that: be connected by the 3rd rotating shaft (24) between described sliding sleeve and the portable bar, sliding sleeve is provided with the coes wrench (25) of regulating sliding sleeve hoop cover front frame tightness.