CN206265228U - A kind of compact folding bicycle - Google Patents

Abstract

The utility model belongs to technical field of bicycles, there is provided a kind of compact folding bicycle, including front vehicle body, aftercarriage, saddle, transmission mechanism and arrestment mechanism, including front-wheel, front fork, vertical, handlebar and frame cross, the aftercarriage includes trailing wheel, back vent and connecting plate to the front vehicle body；Axis Bearing axis parallel to the ground is provided with below the frame cross, the front vehicle body or aftercarriage can rotate around the axis of Bearing axis, and between being provided with for keeping front and rear car body relative position locking piece, the front wheels and rear wheels are fixedly installed in front fork lower end and back vent rear end by wheel shaft respectively, and the front and back wheel center is ridden on straight line at one.The utility model reaches folding purpose mainly by being pivoted.The compact folding bicycle method for folding that the utility model is provided is simple, and front and back wheel is coaxial and parallel after folding, in the case where wheel wheel footpath is not reduced, reach it is minimum fold purpose, be easy to carry, easily stored.

Description

A kind of compact folding bicycle

Technical field

The utility model is related to technical field of bicycles, and in particular to a kind of compact folding bicycle.

Background technology

Bicycle is the popular vehicles of a kind of convenience, economy, environmental protection.In the modern society of promotion environmental protection, People also increasingly pay attention to the trip instrument of riding instead of walk of this environmental protection of bicycle, but most of bicycle is not readily portable. Then, for the ease of keeping and carrying, it is proposed that various forms of folding bicycles.The folding bicycle of existing market is adopted mostly Bicycle overall shrinkage or folding effect are realized with the mode of stretching folding or pairing folding placed in the middle, due to symmetrically being propped up by main body The limitation of frame structure, makes the car body after folding not fully come together, and volume is necessarily large and bulky, and fold mechanism is complex, Operating procedure is also comparatively laborious.And although some compact folding bicycles are exquisite, due to design concept and traditional limitation, Also symmetric design is taken, under this constraint thought, drawing method for folding can only be used, thus make wheel rim too small, ridden The reduction of row comfort level, should not also ride at a distance.

Utility model content

For defect of the prior art, the utility model provides a kind of compact folding bicycle, the letter of its method for folding Single, front and back wheel is coaxial and parallel after folding, in the case where wheel wheel footpath is not reduced, reaches minimum folding purpose, be easy to carry, It is easily stored.

A kind of compact folding bicycle, including front vehicle body, aftercarriage, saddle, transmission mechanism and arrestment mechanism, its feature exist In：Including front-wheel, front fork, vertical, handlebar and frame cross, the aftercarriage includes trailing wheel, back vent and connection to the front vehicle body Plate；Axis Bearing axis parallel to the ground is provided with below the frame cross；Connection is set with the Bearing axis Plate, frame cross, back vent and transmission mechanism, the front vehicle body or aftercarriage can rotate around the axis of the axis, and be provided with The locking piece of relative position between for keeping front and rear car body, the front-wheel is fixedly installed in the front fork lower end, institute by wheel shaft State trailing wheel and the back vent rear end is fixedly installed in by wheel shaft；During deployed condition, center and the frame cross front end of the front-wheel Front fork axially bored line be installed stagger on front-wheel axis direction a segment distance, and front and back wheel center is ridden on straight line at one；When Front fork is driven after front-wheel rotates 180 ° centered on front fork mounting hole axis, and front and back wheel staggers antarafacial.

Specifically, the front fork and back vent are the lower end and the one of corresponding wheel shaft of unilateral fork, front fork and back vent End connection.

Specifically, the front fork upper end is arranged in the front fork mounting hole of frame cross front end by bowl group, the bowl group Upper end is installed with first shaft coupling, is provided with a bite block of the first shaft coupling standing, and the vertical upper end of the handle is consolidated Dingan County is equipped with second shaft coupling, and handlebar is provided with the bite block in the second shaft coupling；The front fork, vertical, handlebar Axially bored line integrally can be installed around front fork with front-wheel to rotate.

Specifically, the locking piece is the spring detent being located between frame cross and back vent, and fork front end sets in the rear There are deployed condition lockhole and folded state lockhole.

Specifically, the connecting plate and back vent are connected by carrying bolt group.

Specifically, the first shaft coupling and second shaft coupling are elastic cross coupler, in elastic ten couplet Spring is provided between the bite block of axle device two, the axle of described elastic cross coupler one end is arranged to T-bolt, in the T-shaped spiral shell Spigot position is arranged with tightens wheel.Described tightening can fix bite block when wheel is tightened, the elastic cross coupler is not rotated； When wheel is tightened in release, the elastic cross coupler can be easily around own axis.

Specifically, the front wheels and rear wheels are same type wheel, and wheel shaft and the wheel body wall of the wheel side are put down same On face；The wheel shaft of opposite side protrudes wheel body and is provided with screw thread, and the front fork and back vent are connected with the jag of wheel shaft, and front fork with Back vent is located at the same side.

Specifically, the transmission mechanism includes chain wheel, crank, pedal, chain and flywheel, and the chain wheel is sleeved in Bearing On axle, the crank is arranged on Bearing axis two ends, and the crank end is provided with pedal, and the flywheel is arranged on rear axle On, the chain engagement is arranged on chain wheel and flywheel.Pedal drive crank is stepped on by pedaling, and then band movable chain wheel is rotated, finally By chain and flywheel, rear wheel is driven, there is provided power, complete the whole transmission of bicycle.

Specifically, the arrestment mechanism includes being arranged on the front-wheel disc brake component of front-wheel and is arranged on the rear-wheel disc brake of trailing wheel Component, the front-wheel disc brake component and rear-wheel disc brake component include disc brake sheet, disc brake binder and brake cable；The handlebar two ends Brake is separately installed with, brake cable is connected with the brake.

Specifically, between the front-wheel wheel shaft and front fork and between rear axle and back vent with the flange with slipmat Nut and circular locking nut are fastened.

The compact folding bicycle is mainly when folding and is pivoted folding, specifically includes following steps：

Step1：By vertical, front fork and the overall front fork around the frame cross of front-wheel install axially bored line (front fork mounting hole, Front fork upper end and bowl group axle center three are coaxial) 180 ° of rotate counterclockwise, front wheels and rear wheels is staggered antarafacial, at the same make front fork and Back vent heteropleural.

Step2：The fixation front vehicle body is motionless, and spring detent is pulled out in the frame cross near Bearing axis, The aftercarriage is set integrally to rotate counterclockwise 180 ° around Bearing axis, (or fixed aftercarriage is motionless, makes the front vehicle body entirety 180 ° are rotated clockwise around Bearing axis), finally make trailing wheel coaxial with front-wheel and parallel (i.e. front and back wheel is completely overlapped), now, Spring detent can be from back vent deployed condition lockhole enter folded state lockhole, lock back vent, keep folded state, conveniently push away Row is carried.

Step3：Outward winding and handlebar and the second shaft coupling between vertical tightened wheel, now handlebar can under the action of the spring with Another bite block of second shaft coupling is separated a distance, and enables handlebar ease rotation, then by handlebar along second shaft coupling axle Line is rotated by 90 °, and it is in same direction with vertical；

Step4：Outward winding and tighten wheel with first shaft coupling vertical, now it is vertical can under the action of the spring with the first shaft coupling Another bite block of device is separated a distance, make it is vertical can ease rotation, then will be vertical counterclockwise along first shaft coupling axis It is rotated by 90 °, makes handlebar and leaned against on vehicle frame vertical；

Step5：Open vehicle seat binder and put down saddle, further to reduce bodywork height；

Step6：The pedal on both sides is packed up, to reduce the width of vehicle body.

As shown from the above technical solution, the compact folding bicycle that the utility model is provided, front and back wheel is asymmetrically designed, Can be the wheel footpath of popular bicycle on the market in wheel using above need not excessively consider wheel rim size, it is then big according to wheel footpath Small corresponding change body frame structure.Mainly by folding is rotated about the axis during folding, accessory is few, manufactures simple；It is preceding after folding Trailing wheel is coaxial and parallel, small volume, be easy to carry, it is easily stored, vehicle looks succinct, light and compact.

Brief description of the drawings

In order to illustrate more clearly of the utility model specific embodiment or technical scheme of the prior art, below will be right The accompanying drawing to be used needed for specific embodiment or description of the prior art is briefly described.In all of the figs, it is similar The general reference by being similar to of element or part is identified.In accompanying drawing, each element or part might not be according to actual ratios Draw.

Schematic diagram after the compact folding bicycle expansion that Fig. 1 is provided for the utility model embodiment；

Fig. 2 be Fig. 1 shown in compact folding bicycle fold completely after front view；

Fig. 3 be Fig. 1 shown in compact folding bicycle fold completely after top view；

Fig. 4 is each part connection diagram at Bearing axis in Fig. 1；

Fig. 5 is Bearing middle shaft structure schematic diagram in Fig. 1；

Fig. 6 is elastic cross coupler structural representation in Fig. 1；

Fig. 7 is frame cross structural representation in Fig. 1；

Fig. 8 is car wheel structure schematic diagram in Fig. 1；

Fig. 9 is front fork structure schematic diagram in Fig. 1；

Figure 10 is back fork structure schematic diagram in Fig. 1；

Figure 11 is connecting board structure schematic diagram in Fig. 1；

Figure 12 is the structural representation of carrying bolt group in Fig. 1；

Figure 13 is the folding process schematic diagram of embodiment illustrated in fig. 1.

Reference：

1- front-wheels；2- front forks；3- bowls of group；4- first shaft couplings；5- is vertical；6- handlebars；7- second shaft couplings；8- vehicle frames are horizontal Beam；9- cushion socket bars；10- saddles；11- back vents；12- disc brake sheets；13- disc brake binders；14- trailing wheels；15- flywheels；16- chains； 17- chain wheels；18- carrying bolt groups；19- pedals；20- cranks；21- Bearing axis；22- springlocks；23- connecting plates；24- elasticity Cross coupler；25- wheels；801- front fork mounting holes；802- bar mounting hole；1101- deployed condition lockholes；1102- is folded State lockhole；2401- bite blocks；2402- tightens wheel；2403- springs.

Specific embodiment

The embodiment of technical solutions of the utility model is described in detail below in conjunction with accompanying drawing.Following examples are only For clearly illustrating the technical solution of the utility model, therefore example is only used as, and this practicality can not be limited with this New protection domain.

Referring to Fig. 1 to Fig. 4, a kind of compact folding bicycle, including front vehicle body, aftercarriage, saddle 10, transmission mechanism and system Motivation structure；The front vehicle body is including front-wheel 1, front fork 2, vertical 5, handlebar 6 and frame cross 8 (referring to Fig. 7), the aftercarriage bag Include trailing wheel 14, back vent 11 and connecting plate 23 (referring to Figure 11)；Axis training parallel to the ground is provided with below the vehicle frame horizontal stroke 8 Woods axis 21 (referring to Fig. 5)；Connecting plate 23, frame cross 8, back vent 11 and transmission mechanism are set with the Bearing axis 21, The front vehicle body or aftercarriage can rotate around the axis of the Bearing axis 21, and relative between being provided with for keeping front and rear car body The locking piece of position, the front-wheel 1 is fixedly installed in the lower end of the front fork 2 by wheel shaft, and the trailing wheel 14 is fixed by wheel shaft It is installed on the rear end of the back vent 11；Before being folded when riding condition (i.e.), before the center of the front-wheel 1 and frame cross front end The fork axis of mounting hole 801 staggers a segment distance on front-wheel axis direction, and front and back wheel center is ridden on straight line at one；In folding Front fork drives front-wheel to rotate 180 ° when folded so that front and back wheel staggers antarafacial, is that trailing wheel 14 is stepped down, so that front and back wheel can be again Conjunction is abutted.

Referring to Fig. 9 and Figure 10, the front fork 2 and back vent 11 are unilateral fork, the lower end of front fork 2 and back vent 11 with it is right One end connection of the wheel shaft answered.

The upper end of the front fork 2 is arranged in the front fork mounting hole 801 of the front end of frame cross 8 by bowl group 3, the bowl group 3 Upper end is installed with first shaft coupling 4, is provided with a bite block of the first shaft coupling 4 vertical 5, on the handle vertical 5 End is installed with second shaft coupling 7, and handlebar 6 is provided with the bite block in the second shaft coupling 7；The front fork 2, Vertical 5, handlebar 6 and front-wheel 1 can integrally around the axis rotation of front fork mounting hole 801.

Specifically, the locking piece is the spring detent 22 being located between frame cross 8 and back vent 11, and pitches 11 in the rear Front end is provided with deployed condition lockhole 1101 and folded state lockhole 1102.The connecting plate 23 and back vent 11 pass through carrying bolt group 18 connections.

Referring to Fig. 6, the first shaft coupling 4 and second shaft coupling 7 are elastic cross coupler 24, described elastic ten Spring 2402 is provided between 24 liang of bite blocks 2401 of word shaft coupling, the axle of described one end of elastic cross coupler 24 is arranged to T-shaped Bolt, is arranged with the T-bolt position and tightens wheel 2403.Described tightening when wheel 2403 is tightened can fix bite block, make The elastic cross coupler 24 is not rotated；When wheel 2403 is tightened in release, the elastic cross coupler 24 can be easily around itself Axis is rotated.

Referring to Fig. 8, the front-wheel 1 and trailing wheel 14 are the wheel 25 of same type, the wheel shaft and wheel body of the side of the wheel 25 Wall is at grade；The wheel shaft of opposite side protrudes wheel body and is provided with screw thread, the jag of the front fork 2 and back vent 11 and wheel shaft Connection, and front fork 2 and back vent 11 are located at the same side.

Referring to Fig. 4, the transmission mechanism includes chain wheel 17, crank 20, pedal 19, chain 16 and flywheel 15, the chain wheel 17 are sleeved on Bearing axis 21, and the crank 20 is arranged on the two ends of Bearing axis 21, and the end of the crank 20 is provided with pedal 19, the flywheel 15 is arranged on the wheel shaft of trailing wheel 14, and the engagement of the chain 16 is arranged on chain wheel 17 and flywheel 15.By pedaling Stepping on pedal 19 drives crank 20, and then band movable chain wheel 17 to rotate, and eventually through chain 16 and flywheel 15, drives trailing wheel 14 to rotate, Power is provided, the whole transmission of bicycle is completed.

Referring to Fig. 1, the arrestment mechanism includes being arranged on the front-wheel disc brake component of front-wheel 1 and is arranged on the trailing wheel of trailing wheel 14 Disc brake component, the front-wheel disc brake component and rear-wheel disc brake component include disc brake sheet 12, disc brake binder 13 and brake cable；It is described The two ends of handlebar 6 are separately installed with brake, and brake cable is connected with the brake.

With the flange nut with slipmat between the front-wheel wheel shaft and front fork 2 and between rear axle and back vent 11 Fastened with circular locking nut.The saddle 10 is inserted in the seat bar mounting hole 802 in frame cross by cushion socket bar.Ginseng See Figure 12, the compact folding bicycle is mainly when folding and is pivoted folding, specifically includes following steps：

Step1：By vertical 5, front fork 2 and the overall front fork around the frame cross 8 of front-wheel 1 are installed axially bored line, (front fork is pacified Dress hole, front fork upper end and bowl group axle center three are coaxial) 180 ° of rotate counterclockwise, front-wheel 1 and trailing wheel 14 is staggered antarafacial, while Make front fork 2 and the heteropleural of back vent 11.

Step2：The fixation front vehicle body is motionless, and spring detent is pulled out in the frame cross near Bearing axis 21 22, make the aftercarriage overall around Bearing axis 21 to rotate counterclockwise 180 ° that (or fixed aftercarriage is motionless, makes the front vehicle body It is overall to rotate clockwise 180 ° around Bearing axis 21), finally make trailing wheel 14 coaxial with front-wheel 1 and parallel (i.e. front and back wheel is completely heavy It is folded), now, the deployed condition lockhole 1101 that spring detent 22 can be from back vent 11 enters folded state lockhole 1102, after locking Fork 11, keeps folded state, convenient to carry out carrying.

Step3：Outward winding and handlebar 5 and the second shaft coupling 7 between vertical 6 is tightened wheel 2402, now handlebar 6 can be in spring Another bite block in the presence of 2403 with second shaft coupling 7 is separated a distance, and enables the ease rotation of handlebar 6, then by car It is rotated by 90 ° along the axis of second shaft coupling 76, it is in same direction with vertical 5；

Step4：The effect tightened wheel 2402, now understand in spring 2403 vertical 5 outwarded winding vertical 5 and first shaft coupling 4 It is lower to be separated a distance with another bite block of first shaft coupling 4, enable vertical 5 ease rotations, then will be vertical 5 along first 90 ° of 4 line rotate counterclockwise of axle device axle, makes handlebar 6 and is leaned against on vehicle frame vertical 5；

Step5：Open vehicle seat binder and put down saddle 10, further to reduce bodywork height；

Step6：The pedal 19 on both sides is packed up, to reduce the width of vehicle body.The utility model provide it is compact-folded from Driving, mainly by rotating about the axis folding during folding, after folding, front and back wheel is coaxial and parallel patch, small volume, is easy to carry, easily In storage.

Finally it should be noted that：Above example is only used to illustrate the technical solution of the utility model, rather than its limitations； Although being described in detail to the utility model with reference to the foregoing embodiments, it will be understood by those within the art that： It can still modify to the technical scheme described in previous embodiment, or to which part or all technical characteristic Carry out equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from the utility model embodiment The scope of technical scheme, it all should cover in the middle of the scope of claim of the present utility model and specification.

Claims (10)

1. a kind of compact folding bicycle, including front vehicle body, aftercarriage, saddle, transmission mechanism and arrestment mechanism, its feature exist In：Including front-wheel, front fork, vertical, handlebar and frame cross, the aftercarriage includes trailing wheel, back vent and connection to the front vehicle body Plate；Axis Bearing axis parallel to the ground is provided with below the frame cross；Connection is set with the Bearing axis Plate, frame cross, back vent and transmission mechanism, the front vehicle body or aftercarriage can rotate around the axis of the axis, and be provided with The locking piece of relative position between for keeping front and rear car body, the front-wheel is fixedly installed in the front fork lower end, institute by wheel shaft State trailing wheel and the back vent rear end is fixedly installed in by wheel shaft；During deployed condition, center and the frame cross front end of the front-wheel Front fork axially bored line be installed stagger on front-wheel axis direction a segment distance, and front and back wheel center is ridden on straight line at one；When Front fork is driven after front-wheel rotates 180 ° centered on front fork mounting hole axis, and front and back wheel staggers antarafacial.

2. compact folding bicycle according to claim 1, it is characterised in that：The front fork and back vent are unilateral car The lower end of fork, front fork and back vent connects with one end of corresponding wheel shaft.

3. compact folding bicycle according to claim 1 and 2, it is characterised in that：Pacified by bowl group the front fork upper end In the front fork mounting hole of frame cross front end, the bowl group upper end is installed with first shaft coupling, first shaft coupling It is provided with one bite block of device standing, the vertical upper end of the handle is installed with second shaft coupling, in the second shaft coupling Handlebar is installed on one bite block；The front fork, vertical, handlebar and front-wheel integrally can be installed axially bored line around front fork rotate.

4. compact folding bicycle according to claim 1 and 2, it is characterised in that：The locking piece is horizontal to be located at vehicle frame Spring detent between beam and back vent, and fork front end is provided with deployed condition lockhole and folded state lockhole in the rear.

5. compact folding bicycle according to claim 1, it is characterised in that：The connecting plate and back vent are by supporting spiral shell Bolt group is connected.

6. compact folding bicycle according to claim 3, it is characterised in that：The first shaft coupling and second shaft coupling Elastic cross coupler is, spring, the elastic cross shaft coupling are provided between the bite block of elastic cross coupler two The axle of device one end is arranged to T-bolt, is arranged with the T-bolt position and tightens wheel.

7. compact folding bicycle according to claim 2, it is characterised in that：The front wheels and rear wheels are same type car Wheel, the wheel shaft of the wheel side is with wheel body wall at grade；The wheel shaft of opposite side protrudes wheel body and is provided with screw thread, described Front fork and back vent are connected with the jag of wheel shaft, and front fork and back vent are located at the same side.

8. compact folding bicycle according to claim 1, it is characterised in that：The transmission mechanism include chain wheel, crank, Pedal, chain and flywheel, the chain wheel are sleeved on Bearing axis, and the crank is arranged on Bearing axis two ends, the crank End is provided with pedal, and the flywheel is arranged on rear axle, and the chain engagement is arranged on chain wheel and flywheel.

9. compact folding bicycle according to claim 1, it is characterised in that：The arrestment mechanism includes being arranged on front-wheel Front-wheel disc brake component and be arranged on the rear-wheel disc brake component of trailing wheel, the front-wheel disc brake component and rear-wheel disc brake component include Disc brake sheet, disc brake binder and brake cable；The handlebar two ends are separately installed with brake, and brake is connected with the brake Line.

10. compact folding bicycle according to claim 1, it is characterised in that：Between the front-wheel wheel shaft and front fork with And fastened with the flange nut with slipmat and circular locking nut between rear axle and back vent.