CN2855880Y

CN2855880Y - Frame of folding bicycle

Info

Publication number: CN2855880Y
Application number: CN 200520084001
Authority: CN
Inventors: 杨勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-06-07
Filing date: 2005-06-07
Publication date: 2007-01-10
Anticipated expiration: 2015-06-07

Abstract

The utility model discloses a foldable bicycle frame. It comprises a main steering assembly, a main beam arranged in a way that the front is low and the back is high, and a back crank, the front end of the main beam is connected fixedly with the steering assembly, a saddle is fixed on the back end, the middle and the lower parts of the main beam are hinged the back crank through a hinge axle with a left-right axle line, a support pole is hinged on the back of the upper part of the main beam, the lower part of the support pole are movably connected with the back crank by pin shaft. While the frame of the bicycle adopting such structure is at opening state, the main beam, the support beam and the back crank surround together to form a closed nearing triangle structure with good stability and fastness, as a hinge chain with a left-right axle line is used between the back crank and the main beam, after the pin shaft between the lower end of the support pole and the back crank is taken out, the main beam and the back crank are pushed together, the bicycle can be folded the front wheel and the back wheel no needing to leave from the ground, therefore, it is labor-saving and has convenient operation.

Description

The novel folding cycle frame

Technical field

The utility model relates to a kind of Folding Bicycle, particularly the vehicle frame of this Folding Bicycle.

Background technology

Current Folding Bicycle vehicle frame has a variety of, they generally are the hinges that upward and downward is set at the middle part of vehicle frame, this cycle frame is when folding and opening, the a part of relative fixed that needs its front and rear, another part is wanted liftoff or could be realized rotating around hinge with the ground cliding friction, and the car body of opening is bigger, makes to operate inconvenience and effort.

Summary of the invention

The purpose of this utility model is to provide a kind of simple in structure, easy to operate and durable novel folding cycle frame.

For achieving the above object, the technical solution of the utility model is: the novel folding cycle frame, it mainly comprises girder and the back vent that turns to assembly, low early and high after layout, the front end of girder with turn to assembly to be connected, the rear end is fixed with vehicle seat, the middle and lower part of girder by axis be about to hinge and back vent hinged, the top rear side hinge of girder is associated with strut bar, the lower end of strut bar detachably connects by bearing pin with back vent.Adopt the cycle frame of this structure, it is when open mode, girder, strut bar, back vent one common peripheral are bundled into a subtriangular structure of osed top, have stability and fastness preferably and since about having adopted axis to be between back vent and the girder to hinge, so behind the bearing pin between lower end of taking off strut bar and the back vent, as long as girder and back vent to pushing away together, front-wheel and trailing wheel need not be liftoff, just can realize the folding of bicycle, thereby not only laborsaving but also easy to operate.

As a kind of improvement of the present utility model, above-mentioned girder also can be the accordion structures of at least two joints, connect by collapsible fast mechanism for card between its each joint, next joint of described girder by axis be down about to hinge and back vent hinged.

As another kind of improvement the of the present utility model, above-mentioned girder can be the sleeve type structures of at least two joints, and a pipe joint body can be inserted in the body of next joint that is attached thereto successively it on, described girder next save by axis be about to hinge and back vent hinged.

The segmentation structure of above-mentioned girder helps further dwindling taking up room behind the bicycle folding, and simple in structure, be easy to realize.

But the above-mentioned girder body both sides relative fixed of next joint has left and right two connecting panels, above-mentioned left and right connecting panel by axis be about to hinge and back vent hinged.The hinged of girder and back vent is convenient in the setting of above-mentioned left and right connecting panel.

Further improve as the utility model, turn to that the steering shaft below the steering handle is divided into three sections in the assembly, its hypomere and stage casing are that sagittal hinge links and by fast mechanism for card locking, its epimere can sink in the body in stage casing with axis.

Description of drawings

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

Fig. 2 is an embodiment folded state scheme drawing.

The specific embodiment

As shown in Figure 1, this novel folding cycle frame, its mainly comprise low early and high after layout girder 1, turn to assembly 2 and back vent 3, its middle girder 1 is the accordion structure of forward and backward two joints, connect by collapsible fast mechanism for card 13 between its prosthomere 11 and the deutomerite 12, the prosthomere 11 of girder 1 with turn to the steering column jacket 21 of assembly 2 to be connected, the end of deutomerite 12 is fixed with vehicle seat 14; Back vent 3 with two connecting panels 15 on the girder prosthomere 11 be by axis about to hinge 31 be articulated as one.The rear portion of girder deutomerite 12 is also cut with scissors and is associated with strut bar 16, and the lower end of strut bar 16 detachably connects by bearing pin 32 with back vent 3.Turn to the front fork 22 of assembly 2 to be fixed on the lower end of steering shaft, and be loaded in the steering column jacket 21 by steering shaft, front-wheel 23 is equipped with in its underpart.The upper end of steering shaft is fixed with steering handle 24.Steering shaft is divided into three sections, and its hypomere 25 and stage casing 26 are that sagittal hinge links and by fast mechanism for card locking, its epimere 27 can sink in the body in stage casing 26 with axis.

Said front and rear direction is before being according to the customary front wheel side of bicycle in the utility model, after rear wheel-side is, with the direction of forward and backward side quadrature be left and right directions.

This novel folding cycle frame is when needs are deposited or carry, can fold as follows: the epimere 27 with steering shaft sinks in the body in stage casing 26 earlier, open the fast mechanism for card between its stage casing 26 and the hypomere 25 then, and stage casing 26 is rotated down folding about 90 ° with respect to hypomere 25, steering handle 24 and front-wheel 23 are closed up, and then open the bearing pin 32 of strut bar 16 lower ends, strut bar 16 is separated with back vent 3, before opening girder again, back two

joints

11,12 fast mechanism for card 13, the deutomerite 12 that makes girder is folding and close up to prosthomere 11 directions, at last girder 1, turn to assembly 2 to push away to back vent 3 directions together, car load is closed up, finish folding.

Opening of bicycle is also very convenient: launch girder 1 and also lock fast mechanism for card 13, open strut bar 16 and lock bearing pin 32, launch steering shaft then, the steering handle 24 and it is promoted to suitable height locking gets final product of becoming a full member.

The utility model is not limited in this embodiment, and it also can have various conspicuous distortion, and for example its girder 1 also can be multi-node sleeve type structure.

Claims

1, novel folding cycle frame, it is characterized in that: described novel folding cycle frame mainly comprises girder and the back vent that turns to assembly, low early and high after layout, the front end of girder with turn to assembly to be connected, the middle and lower part of girder by axis be about to hinge and back vent hinged, the top rear side hinge of girder is associated with strut bar, and the lower end of strut bar detachably connects by bearing pin with back vent.

2, novel folding cycle frame according to claim 1, it is characterized in that: described girder is the accordion structure of at least two joints, connect by collapsible fast mechanism for card between its each joint, next joint of described girder by axis be down about to hinge and back vent hinged.

3, novel folding cycle frame according to claim 1, it is characterized in that: described girder is the sleeve type structure of at least two joints, pipe joint body can be inserted in the body of next joint that is attached thereto successively on it, next joint of described girder by axis be about to hinge and back vent hinged.

4, according to claim 2 or 3 described novel folding cycle frames, it is characterized in that: the described girder body both sides relative fixed of next joint has left and right two connecting panels, described left and right connecting panel by axis be about to hinge and back vent hinged.

5, according to each described novel folding cycle frame in the claim 1,2,3, it is characterized in that: turn to that the steering shaft below the steering handle is divided into three sections in the assembly, its hypomere and stage casing are that sagittal hinge links with axis, and its epimere can sink in the body in stage casing.

6, novel folding cycle frame according to claim 4 is characterized in that: turn to that the steering shaft below the steering handle is divided into three sections in the assembly, its hypomere and stage casing are that sagittal hinge links with axis, and its epimere can sink in the body in stage casing.