CN102745290B

CN102745290B - Folding bicycle

Info

Publication number: CN102745290B
Application number: CN201210249041.5A
Authority: CN
Inventors: 崔晓宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-18
Filing date: 2012-07-18
Publication date: 2014-11-05
Anticipated expiration: 2032-07-18
Also published as: CN102745290A

Abstract

The invention discloses a folding bicycle which comprises a frame, a front fork, a rear fork, a front wheel, a rear wheel, a handle and a seat rod and is characterized in that the front end of the rear fork is rotationally connected with the frame; the rear end of the frame is provided with a clamping surface; the front end of the rear fork is provided with a rear fork clamping surface; the shapes of the opposite sides of the frame clamping surface and the rear fork clamping surface are matched with the appearance of the seat rod; and when the frame is in an unfolded state, the frame clamping surface and the rear fork clamping surface clamp the front side and the rear side of the seat rod. According to the folding bicycle, a middle pipe is canceled, a manual locking structure is not required to be arranged, therefore, the structure is simplified, the weight of the bicycle body is lightened, and the operation of a user is convenient.

Description

A kind of folding bicycle

Technical field

The present invention relates to a kind of wheeled vehicles, be specifically related to a kind of Foldable bicycle.

Background technology

Bicycle is mankind's vehicle easy to use.Common bicycle is two wheel constructions, comprises vehicle frame, front fork, back vent, front-wheel, trailing wheel, handle, seat bar, seat cushion and driver train.

For convenience of the carrying and depositing of bicycle, such as vehicle such as taking subway, bus, carry bicycle, there is Foldable bicycle.Common folding bicycle, vehicle body integral structure and ordinary bicycle are similar, and by reducing wheel diameters, the vehicle frame place in the middle of front and rear wheel arranges foldable structure, and the front and back of realizing vehicle body are folding, and handlebar is carried out to side-foldable.Vehicle frame is provided with middle pipe, and a seat bar is socketed in middle pipe, can up-down adjustment bench height, when folding, seat cushion along in pipe glide, two sections of vehicle frames are folding simultaneously.

Yet on the one hand, this folding bicycle is provided with middle pipe and folder, cause tare to increase, and inconvenient user operation; On the other hand, the bicycle after folding need to be used portable row, and it is also not too convenient to carry.

Summary of the invention

The object of the invention is to provide a kind of folding bicycle, by the structure design to vehicle frame, cancels middle pipe and the folder of bicycle, and to alleviate car body weight, simplified structure, to be convenient to folding operation, and person easy to use carries out on ground after folding, realizes and easily carrying.

To achieve the above object of the invention, the technical solution used in the present invention is: a kind of folding bicycle, comprise vehicle frame, front fork, back vent, front-wheel, trailing wheel, handle and seat bar, described back vent front end and vehicle frame are rotationally connected, vehicle frame rear end is provided with clamping face, back vent front end is provided with back vent clamping face, and described vehicle frame clamping face coordinates with seat bar profile with the shape of back vent clamping face opposite side; During vehicle frame deployed condition, the both sides, front and back of vehicle frame clamping face and the described seat of back vent clamping face clamping bar.

In technique scheme, under deployed condition, seat bar is spacing by back vent clamping face and the clamping of vehicle frame clamping face.Described back vent clamping face can be to connect back vent intermediate plate at back vent front end, by the leading flank of back vent intermediate plate, forms back vent clamping face, can be also at the one-body molded clamping face of back vent front end; Described vehicle frame clamping face can be at vehicle frame rear end connecting vehicle frame intermediate plate, by the rear surface of vehicle frame intermediate plate, forms vehicle frame clamping face, can be also an one-body molded clamping face in vehicle frame rear end.When seat bar is subject to downward pressure, vehicle frame and back vent are stressed to be drawn close, and two clamping faces further clamp, the degree of freedom of control block bar.When folding, when rotating back vent, seat bar is relaxed and glides, seat bar rotates behind approximately 70～100 degree angles simultaneously, spacing by vehicle frame, back vent is rotatable 130～170 degree angles, and trailing wheel and front-wheel are drawn in side by side, now, the lower end of back vent clamping face turns to after upward direction spacing to seat bar rear side.

In technique scheme, the clamping face of vehicle frame or back vent is provided with concavo-convex step, and the front or rear surface of seat bar is also provided with the male and fomale(M&F) of cooperation, and when vehicle frame launches to ride like this, vehicle frame is clamping seats bar securely, avoids play.

In technique scheme, the five-way that the rotating shaft being rotationally connected between back vent and vehicle frame is vehicle frame.

Further technical scheme, the described back vent clamping face lower end side back lower place is fixedly connected with fixture block on two pin-joint pieces of back vent, and when folded state, the lower surface of described fixture block coordinates with a seat bar and is spacing to seat bar.

In technique scheme, the front surface of described seat bar is positioned at the rear of the Five-way tube of vehicle frame.

The lower end of described seat bar is provided with pulley.

Above, at bicycle, during in folded state, frame five-through and back vent have angle hinged, and front-wheel and trailing wheel present superposed state, and a seat bar lower end is provided with pulley, and folding latter two wheel forms stable standing place with pulley, convenient implementation.In technique scheme, driver train can be set, described driver train, can be, in the bottom of vehicle frame, foot-operated axle drive shaft is installed, and chain drive trailing wheel also can adopt battery-operated.

Coordinate with technique scheme, for further facilitating the folding of car load, between vertical handgrip and back vent, be connected a drag-line, vertical handgrip, back vent, drag-line form a stable triangle force structure, described vertical handgrip lower surface and vertical tube of front fork upper surface be by being articulated and connected, and jointed shaft is positioned at vertical handgrip and vertical tube of front fork along the front portion of direction of traffic.

Further, described vertical handgrip is connected through tapered end joint mechanism with one end of drag-line, or described vehicle frame is connected through tapered end joint mechanism with one end of drag-line.

Preferred technical scheme, described vertical handgrip is to central axis the place ahead deflection of vertical tube of front fork, and the point of connection of described vertical handgrip and drag-line one end is positioned on the extension line making progress of central axis of vertical tube of front fork.

Preferred technical scheme, has migration included angle between the rotating shaft that described back vent and vehicle frame are rotationally connected and the vertical line of vehicle frame place plane.Front-wheel and trailing wheel skew juxtaposition after folding, left and right is arranged side by side.Now, user easily Foldable bicycle carry out or tow.

In technique scheme, when front-wheel and trailing wheel relatively rotate to folded state to vehicle frame below, the lower end of described back vent clamping face is positioned at the rear side of a bar.

Because technique scheme is used, the present invention compared with prior art has following advantages:

1. the present invention has cancelled middle pipe, between back vent and vehicle frame for single axle rotation is connected, by vehicle frame clamping face and back vent clamping face are set, coordinate grip slipper bar, realize on the one hand the seat bar location under pipe in nothing, on the other hand, utilize seat bar to coordinate with the concavo-convex of clamping face, clamp downward application force, guaranteed under deployed condition the stable position between vehicle frame and back vent, do not need to arrange manual locking structure, expansion and folding operation are simple and convenient.

2. when handlebar folding mechanism adopts stayed structure, only need handlebar 90-degree rotation can make above handlebar be folded down, now drag-line is lax, and back vent drives trailing wheel to rotate near front-wheel, completes vehicle frame scissor folding.Under folding rear carriage pipe and back vent, fixture block pins seat bar, simplifies the structure, and car body weight is alleviated, and facilitated user's operation.

3. under folded state, bicycle of the present invention forms folding implementation state, easy to carry; Seat bar falls to being positioned at the vehicle frame supervisor back lower place, small and exquisite attractive in appearance.

Accompanying drawing explanation

Fig. 1 is the folded state front view of the embodiment of the present invention;

Fig. 2 is the right elevation of Fig. 1;

Fig. 3 is the front view of deployed condition in embodiment;

Fig. 4 is the schematic diagram of folding process in embodiment.

Wherein: 1, front-wheel; 2, trailing wheel; 3, front fork; 4, handle; 5, seat bar; 6, vehicle frame; 7, vehicle frame intermediate plate; 8, back vent; 9, back vent intermediate plate; 10, back vent pin-joint piece; 11, fixture block; 12, handlebar rotating shaft; 13, drag-line; 14, five-way; 15, torsion spring; 16, jointed shaft.

The specific embodiment

Below in conjunction with drawings and Examples, the invention will be further described:

Embodiment mono-: shown in Figure 3, a kind of folding bicycle, comprises vehicle frame 6, front fork 3, back vent 8, front-wheel 1, trailing wheel 2 and handle 4.Have folding and open two mode of operations.Two pin-joint pieces 10 in described back vent left and right are fixedly connected with back vent 8, and back vent 8 front ends are fixedly connected with back vent intermediate plate 9, and the front surface of back vent intermediate plate 9 forms back vent clamping face.Two pin-joint piece 10 lower ends of back vent are fixedly connected with fixture block 11.When folding, this fixture block 11 offsets with seat bar 5.A bar 5 is fixed in vehicle frame 6 and back vent 8 angles, and has certain distance apart from trailing wheel 2, keep not interfering wheel.

After folding, two wheels and 3 of jiffy stands land, and car can be stood.Five-way 14 two ends, outer ring link line of centers with back vent pin-joint piece 10 and vehicle frame side perpendicular line is a migration included angle.Torsion spring 15 can make trailing wheel have the folding torsion rotating, and realizes auto-folder.

Launching vehicle frame only needs back vent 8 to rotate backward, and back vent intermediate plate 9 and vehicle frame intermediate plate 7 are offseted with seat bar 5 simultaneously.Handlebar erects, and rotates to dead ahead, and rotating shaft and drag-line 13 act on simultaneously, and handlebar is all around fixed, and completes car body by folding into deployed condition, easy manipulation.

The position limiting structure that described back vent 8 and vehicle frame are 6 is, being rotationally connected between axle and vehicle frame of described back vent 8 and vehicle frame 6 is provided with the position limiting structure of working in coordination, and folding bicycle is when deployed condition, and back vent is spacing by this position limiting structure.

Between the vertical line of the rotating shaft that described back vent 8 and vehicle frame 6 are rotationally connected and vehicle frame 6 place planes, there is migration included angle.Front-wheel 1 and trailing wheel 2 skew juxtapositions after folding, left and right is arranged side by side.Now, user easily Foldable bicycle carry out or tow.

Claims

1. a folding bicycle, comprise vehicle frame, front fork, back vent, front-wheel, trailing wheel, handle and seat bar, it is characterized in that: described back vent front end and vehicle frame are rotationally connected, vehicle frame rear end is provided with clamping face, back vent front end is provided with clamping face, and described vehicle frame clamping face coordinates with seat bar profile with the shape of back vent clamping face opposite side; During vehicle frame deployed condition, the both sides, front and back of vehicle frame clamping face and the described seat of back vent clamping face clamping bar; When folding, when rotating back vent, seat bar is relaxed and glides; Between vertical handgrip and back vent, be connected a drag-line, vertical handgrip, back vent, drag-line form a stable triangle force structure, and described vertical handgrip lower end and vertical tube of front fork upper end be by being articulated and connected, and jointed shaft is positioned at vertical handgrip and vertical tube of front fork along the front portion of direction of traffic.

2. folding bicycle according to claim 1, is characterized in that: the five-way that the rotating shaft being rotationally connected between back vent and vehicle frame is vehicle frame.

3. folding bicycle according to claim 1, is characterized in that: the described back vent clamping face lower end side back lower place, on two pin-joint pieces of back vent, be fixedly connected with fixture block, and when folded state, the lower surface of described fixture block coordinates with a seat bar and is spacing to seat bar.

4. folding bicycle according to claim 2, is characterized in that: the front surface of described seat bar is positioned at the outside face rear of the five-way of vehicle frame.

5. folding bicycle according to claim 1, is characterized in that: the lower end of described seat bar is provided with pulley.

6. folding bicycle according to claim 1, is characterized in that: described vertical handgrip or vehicle frame are connected through tapered end joint mechanism with one end of drag-line.

7. folding bicycle according to claim 1, is characterized in that: described vertical handgrip is to central axis the place ahead deflection of vertical tube of front fork, and the point of connection of described vertical handgrip and drag-line one end is positioned on the extension line making progress of central axis of vertical tube of front fork.

8. folding bicycle according to claim 1, is characterized in that: when front-wheel and trailing wheel relatively rotate to folded state to vehicle frame below, the lower end of described back vent clamping face is positioned at the lower side of a bar.