CN208325505U - A kind of electric bicycle - Google Patents

Abstract

The utility model discloses a kind of electric bicycles, including main car frame, rear chain stay, front-wheel, driving wheel and pedal transmission mechanism, pedal transmission mechanism includes pedal shaft sleeve, crank shaft and turnbarrel, pedal shaft sleeve is placed in main car frame, bearing is equipped in pedal shaft sleeve, crank shaft passes through the inner hole of bearing；Turnbarrel is sheathed in fixing axle, and bearing is provided in fixing axle, and turnbarrel can be rotated by bearing around fixing axle；Front left transmission mechanism or/and front right transmission mechanism are equipped between crank shaft and turnbarrel；Layout forms accommodation space jointly between front left transmission mechanism, front right transmission mechanism, pedal shaft sleeve and turnbarrel.Unitized frame vehicle wheel base length is constant, battery constancy of volume and Vehicular seat cushion height it is consistent under the premise of in the case where, by the reasonable evacuation of front left transmission mechanism, front right transmission mechanism, rear transmission mechanism and rear chain stay, the storage space below the foot's accommodation space and seat cushion of vehicle is increased.

Description

A kind of electric bicycle

Technical field

The utility model relates to a kind of vehicles, and in particular to a kind of electric bicycle.

Background technique

Existing electric bicycle on the market generally includes main car frame, rear chain stay, front-wheel, driving wheel and pedal driver Structure, setting foot pedal and seat cushion case on main car frame have battery and several storage spaces in seat cushion case；The front end hinge of chain stay afterwards It connects in the rear end of main car frame, and is provided with damper at the articulated position rear of rear chain stay and main car frame, driving wheel is arranged rear The rear end of chain stay, when electric bicycle normally travel, the horizontal plane where the hinge joint of rear chain stay and main car frame is higher than driving Horizontal plane where the wheel shaft of wheel, to guarantee vehicle in braking, rear-wheel does not generate chattering, so, rear chain stay is with front end Hinge joint is that starting point is tilted down setting；Pedal transmission mechanism includes pedal shaft, drive sprocket and driven sprocket, drive chain Wheel is fixed in pedal shaft, and driven sprocket is arranged on the wheel shaft of driving wheel, and drive sprocket and driven sprocket pass through chain reality Now it is drivingly connected；In addition, rear chain stay is less than the center of drive sprocket at a distance from the hinge joint to driven sprocket wheel shaft of main car frame To the distance at the center of driven sprocket.As shown in Figure 1 and Figure 2, due to drive sprocket 300, driven sprocket 301, chain 302, pedal The main component of the pedals transmission mechanisms such as shaft 303 is close to cause battery 305 to be had no idea in the middle line of main car frame 304 It is settled to the lower section of vehicle, causes vehicle center of gravity high, and presence and existing electricity of the body part due to pedal transmission mechanism The standardized designs of motor-car industry bench height lead to the size for having seriously affected 307 lower section storage space 306 of vehicle seat cushion, Also, in order to guarantee vehicle in the work of rear wheel shock-absorbing device, the variation degree of chain tension is in controlled range, pedal shaft Axis be in rear chain stay front end hinge joint front adjacent, and the axis of pedal shaft cannot excessively deviate after chain stay hinge Connecting point position, the horizontal plane being higher than where the wheel shaft of driving wheel as the horizontal plane where the hinge joint of rear chain stay and main car frame, This causes the axis of pedal shaft on height and position closer to seat cushion 307, so, in the 307 consistent premise of height of seat cushion Under, lead to ride people when manpower drives electric bicycle, thigh and shank cannot reach or level off to a straight line, seriously affect Riding people has an effect to pedal transmission mechanism, as shown in Figure 1, the foot's receiving sky for occupying vehicle that pedal transmission mechanism is excessive Between 308 and the lower section of seat cushion 307 storage space 306.In addition, in order to obtain higher transmission ratio, the processing of drive sprocket 300 It is relatively large in diameter, also the storage space 306 of 307 lower section of the excessive foot's accommodation space 308 for occupying vehicle and seat cushion.

According to the regulation of electric bicycle professional standard, pedal transmission mechanism must be in the front of seat cushion, since pedal turns The axis of axis is in the front adjacent of the front end hinge joint of rear chain stay, and the axis of pedal shaft cannot excessively deviate after chain stay Hinge joint position, this causes the Design of length of rear chain stay too long, causes the pitching stability of vehicle to become very poor, electric bicycle It is difficult to manipulate on rugged road surface.

So for the structure of existing electric bicycle, in battery constancy of volume and Vehicular seat cushion height one Under the premise of cause, the storage space below seat cushion should be increased, guarantee that the center of gravity of vehicle is low, pitching stability is good, manpower again Laborsaving, guarantee the tensioning of the chain degree stabilization is driven, guarantee foot's accommodation space is well-to-do, it becomes difficult to realize.

Summary of the invention

The technical problem to be solved by the utility model is to provide a kind of electric bicycle, it can solve it is electronic at present from That storage space below the seat cushion of driving is small, vehicle's center of gravity is low, pitching is stablized is poor, manpower driving is laborious, chain tension shakiness Fixed problem.

In order to solve the above technical problems, the technical solution of the utility model electric bicycle are as follows:

Including main car frame, rear chain stay, front-wheel, driving wheel and pedal transmission mechanism, the main car frame includes main-beam pipe and master The foot pedal support frame of beam pipe connection and the seat cushion support frame being connect with foot pedal support frame；The foot pedal support frame includes the left side The intermediate tube of pipe, the right pipe and the connection left side pipe and the right pipe；Chain stay includes chain stay main body, is arranged in chain stay main body after described On left arm and right arm, left arm, right arm free end described step on hingedly is set to by left pivot, Thuban rotation mechanism respectively The fixing axle of plate bracing frame tail end；The rear end of chain stay main body is arranged in the driving wheel, and the front end of main car frame is arranged in front-wheel；

The pedal transmission mechanism includes pedal shaft sleeve, crank shaft and turnbarrel, and the pedal shaft sleeve is set to Main car frame, pedal shaft sleeve is interior to be equipped with bearing, and the crank shaft passes through the inner hole of bearing, and is respectively equipped at the both ends of crank shaft Left pedal component, right pedal component；The turnbarrel is sheathed in fixing axle, and bearing is provided in fixing axle, rotation Sleeve can be rotated by bearing around fixing axle；Front left transmission mechanism or/and front right are equipped between the crank shaft and turnbarrel Transmission mechanism is equipped with rear transmission mechanism between turnbarrel and driving wheel；The front left transmission mechanism, front right transmission mechanism difference It is close to left side pipe, the right pipe；

Layout is formed jointly between the front left transmission mechanism, front right transmission mechanism, pedal shaft sleeve and turnbarrel Accommodation space；

It is provided with seat cushion case on the main car frame, battery taking and placing hole is equipped in seat cushion case, battery passes through battery taking and placing hole It is placed in the lower section of seat cushion case, and battery is placed in accommodation space.

Seat cushion case is provided on the main car frame, seat cushion case extends to accommodation space.

Battery is equipped in the seat cushion case, and battery is in the bottom position of seat cushion case.

Preferably, the front left transmission mechanism includes the first drive sprocket apparatus and the first driven sprocket, and described first is main Movable sprocket device includes that the first drive sprocket, reset spring, clutch transmission set and rotation pushing disk, first drive sprocket pass through Bearing and pedal axis connection, and the first drive sprocket can be realized relative to crank shaft and be rotated；The crank shaft includes main body, sets respectively Two crank installation axles at main body both ends are set, the section of the crank installation axle is polygon；In the clutch transmission set Heart hole is set in crank installation axle, and clutch transmission is covered and be can axially move in crank installation axle, and reset spring is in clutch Between drive sleeve and the first drive sprocket；The shape of the centre bore is matched with crank installation axle；The clutch transmission set corresponds to One end of first drive sprocket is equipped with several active clutch blocks being spaced apart, and the first drive sprocket is equipped with several be spaced apart Driven clutch block；One section of external screw thread is additionally provided in the crank installation axle, rotation pushes valve snail and connects on external screw thread, and revolves and push Disk is against the outer end face of clutch transmission set, and rotation rotation, which pushes disk and rotation is made to push disk, pushes clutch transmission set towards the first drive chain It is mobile to take turns direction, so that active clutch block be made to be connected in the interval between two adjacent driven clutch blocks, makes clutch transmission Set is realized with the first drive sprocket and is linked；First drive sprocket by chain connect drive the first driven sprocket, first from Movable sprocket is fixed on turnbarrel.

The number of teeth of first drive sprocket is greater than the number of teeth of the first driven sprocket.

Preferably, the front right transmission mechanism includes the second drive sprocket being fixed on crank shaft, is fixed on rotary sleeve The chain of the second driven sprocket and connection the second drive sprocket and the second driven sprocket on cylinder；The second drive sprocket packet Include the chain wheel case with the gear teeth for being arranged the unilateral bearing being fixed on crank shaft and being set in unilateral bearing outer peripheral surface, institute The outer wall for stating unilateral bearing is circumferentially equipped with several outer lugs, corresponding, and the shaft hole inner wall of chain wheel case is equipped with several and evagination Play matched inner groovy；The inner wall of the inner ring of the unilateral bearing is equipped with several circumferentially uniformly distributed internal projections, corresponding, foot It pedals axis and is equipped with several and matched external groove of internal projection.

The number of teeth of the number of teeth of second drive sprocket less than the second driven sprocket.

Transmission mechanism includes third drive sprocket and third driven sprocket after described, and the third drive sprocket is fixed on rotation On rotaring sleeve, third driven sprocket is arranged on the wheel shaft of driving wheel, and the third driven sprocket is flywheel；The third is actively The number of teeth of sprocket wheel is greater than the number of teeth of third driven sprocket.

The crank shaft is placed in the lower section of foot pedal support frame；Pedal shaft sleeve passes through left fixed arm, right fixed arm and pedal The intermediate tube of support frame, which is realized, to be fixed；Horizontal line where the center of the crank shaft is lower than the level where fixed axis center Line.

The both sides of the foot pedal support frame are symmetrically arranged with foldable footrest mechanism, and foldable footrest mechanism includes preceding branch Seat, rear support, toe board, articulated shaft and spring, the preceding support, rear support are fixed on the lower section of foot pedal support frame, toe board Inner face be equipped with hinged seat, before hinged seat is placed between support and rear support, and hinged seat by articulated shaft and preceding support, after Support realizes connection, and realizes overturning relative to preceding support, rear support；The spring is set on articulated shaft, and spring is in Between rear support and hinged seat, the elastic force of the spring makes toe board always and has the mobile trend towards preceding support；It is described One end of preceding support matching hinged seat be equipped with center caulking groove and be centrally located caulking groove periphery and it is with the perforation of center caulking groove Two detent slots, two detent slots are distributed in 180 degree, and the center caulking groove and two detent slots, which are respectively combined, to be formed and hinged seat The consistent shape in section.

What the utility model can achieve has the technical effect that

The layout of the unitized frame of the utility model is ingenious, unitized frame vehicle wheel base length is constant, battery constancy of volume And Vehicular seat cushion height it is consistent under the premise of in the case where, pass through front left transmission mechanism, front right transmission mechanism, rear transmission mechanism And the reasonable evacuation of rear chain stay, increase the storage space below the foot's accommodation space and seat cushion of vehicle；

The utility model is equipped with front left transmission mechanism or/and front right transmission mechanism, and the transmission ratio design of the two rationally, is driven The person of sailing can be chosen according to their own situation the driving of front left transmission mechanism or the realization of front right transmission mechanism to turnbarrel, be suitble to difference The driver of physical strength；

The utility model drives driving wheel by secondary transmission, improves transmission ratio；Under the premise of resultant gear ratio is consistent, Compared to the prior art, secondary transmission can reduce the first drive sprocket of front left transmission mechanism, front right transmission mechanism second The diameter of drive sprocket, and the middle line of the first drive sprocket, the second drive sprocket far from vehicle can be made, both merge out electric power storage The settlement space that pond is laid out downwards, and foot's accommodation space of vehicle is increased, while solving storage space below seat cushion Insufficient problem；And using after secondary transmission, reasonably by the third drive sprocket of largest outside diameter be arranged in former pedal support, Except the settlement space that battery is laid out downwards, the integral thickness of treadle supporting position is avoided to increase, avoids whole volume Become too fat to move, avoids the space utilization rate for causing unsightly to improve vehicle interior to shape；

The utility model is further provided with foldable footrest mechanism, can be by toe board to treadle supporting when manpower is ridden The lower section of frame is stored, and does not influence the rotation of pedal；When being driven by electricity, toe board is outwardly opened, improves the driving of riding people Comfort level.

Detailed description of the invention

Utility model will be further described in detail below with reference to the attached drawings and specific embodiments:

Fig. 1 is the positive structure diagram of the background technique of the utility model；

Fig. 2 is the present invention looks up structural representation of the background technique of the utility model；

Fig. 3 is the stereoscopic schematic diagram of an angle of the utility model electric bicycle；

Fig. 4 is the stereoscopic schematic diagram of another angle of the utility model electric bicycle；

Fig. 5 is the cross-sectional view of the utility model electric bicycle；

Fig. 6 is the perspective view of the pedal transmission mechanism of the utility model electric bicycle；

Fig. 7 is the perspective view of the pedal transmission mechanism with battery of the utility model electric bicycle；

Fig. 8 is the front left transmission mechanism of the utility model electric bicycle and the stereogram exploded view of front right transmission mechanism；

Fig. 9 is the section view installation diagram of the turnbarrel of the utility model electric bicycle；

Figure 10 is the stereogram exploded view of the foldable footrest mechanism of the utility model electric bicycle；

Figure 11 is the perspective view of the toe board of the utility model electric bicycle；

Figure 12 is the structural schematic diagram of the unilateral bearing of the utility model electric bicycle；

Figure 13 is that the accommodation space of the utility model electric bicycle is used for the structural schematic diagram that seat cushion case extends.

Specific embodiment

As shown in Figures 3 to 12, the utility model provides a kind of electric bicycle, including main car frame 1, rear chain stay 2, preceding Wheel 3, driving wheel 4 and pedal transmission mechanism 5, the foot pedal support frame 7 that the main car frame 1 includes main-beam pipe 6, connect with main-beam pipe 6 And the seat cushion support frame 8 being connect with foot pedal support frame 7；The foot pedal support frame 7 includes left side pipe 9, the right pipe 10 and connects Connect the intermediate tube 11 of left side pipe 9 Yu the right pipe 10；Chain stay 2 includes chain stay main body 12, is arranged in chain stay main body 12 after described Left arm 13 and right arm 14, left arm 13, right arm 14 free end institute is hingedly set to by left pivot, Thuban rotation mechanism respectively State the fixing axle 17 of 7 tail end of foot pedal support frame；The rear end of chain stay main body 12 is arranged in the driving wheel 4, and front-wheel 3 is arranged in main vehicle The front end of frame 1；

The pedal transmission mechanism 5 includes pedal shaft sleeve 18, crank shaft 19 and turnbarrel 20, the pedal shaft sleeve 18 are set to main car frame 1, bearing 21 are equipped in pedal shaft sleeve 18, the crank shaft 19 passes through the inner hole of bearing 21, and in foot The both ends for pedaling axis 19 are respectively equipped with left pedal component 22, right pedal component 23, left pedal component 22 and 23 structure of right pedal component It unanimously, include crank 24 and pedal 25；The turnbarrel 20 is sheathed in fixing axle 17, and is provided in fixing axle 17 Bearing 29, turnbarrel 20 can be rotated by bearing 29 around fixing axle 17；It is equipped between the crank shaft 19 and turnbarrel 20 Front left transmission mechanism 26 or/and front right transmission mechanism 27 are equipped with rear transmission mechanism 28 between turnbarrel 20 and driving wheel 4；Institute State front left transmission mechanism 26, front right transmission mechanism 27 is close to left side pipe 9 respectively, the right pipe 10；

It is common between the front left transmission mechanism 26, front right transmission mechanism 27, pedal shaft sleeve 18 and turnbarrel 20 Layout forms accommodation space 30.

It is equipped with battery taking and placing hole (being not marked in figure) in the seat cushion case 31, battery 32 passes through battery taking and placing hole (in figure Do not mark) it is placed in the lower section of seat cushion case 31, and battery 32 is placed in accommodation space 30；It (is not marked in figure in the battery taking and placing hole Note) it is equipped with cover board 68.

Preferably, the front left transmission mechanism 26 includes the first drive sprocket apparatus 33 and the first driven sprocket 34, described First drive sprocket apparatus 33 includes that the first drive sprocket 35, reset spring 36, clutch transmission set 37 and rotation push disk 38, described First drive sprocket 35 is connect by bearing 69 with crank shaft 19, and the first drive sprocket 35 can realize empty cunning with respect to crank shaft 19 Rotation；The crank shaft 19 includes main body 39, two crank installation axles 40 for being separately positioned on 39 both ends of main body, the crank peace The section for filling axis 40 is polygon；The centre bore 41 of the clutch transmission set 37 is sheathed on crank installation axle 40, and clutch transmission Set 37 can axially move in crank installation axle 40, reset spring 36 be in clutch transmission cover 37 and first drive sprocket 35 it Between；The shape of centre bore 41 of the clutch transmission set 37 is matched with the axle body shape of crank installation axle 40；The clutch transmission One end of corresponding first drive sprocket 35 of set 37 is equipped with several active clutch blocks 42 being spaced apart, and sets on the first drive sprocket 35 There are several driven clutch blocks 43 being spaced apart；One section of external screw thread 44 is additionally provided in the crank installation axle 40, rotation pushes disk 38 Matching revolves on external screw thread 44 and pushes the outer end face that disk 38 is against clutch transmission set 37, and rotation rotation pushes disk 38 and pushes away rotation Platen 38 pushes clutch transmission set 37 mobile towards 35 direction of the first drive sprocket, so that it is adjacent to be connected to active clutch block 42 Two driven clutch blocks 43 between interval in, make clutch transmission set 37 with first drive sprocket 35 realize linkage；Described One drive sprocket 35 drives the first driven sprocket 34 by the connection of chain 45, and the first driven sprocket 34 is fixed on turnbarrel 20 On；The number of teeth of first drive sprocket 35 is greater than the number of teeth of the first driven sprocket 34.

Preferably, the front right transmission mechanism 27 includes the second drive sprocket 46 being fixed on crank shaft 19, is fixed on The chain 48 of the second driven sprocket 47 and connection the second drive sprocket 46 and the second driven sprocket 47 on turnbarrel 20；Institute The second drive sprocket 46 is stated including being arranged the unilateral bearing 62 being fixed on crank shaft 19 and being set in 62 periphery of unilateral bearing The chain wheel case 63 with the gear teeth in face, the outer wall of the outer ring 73 of the unilateral bearing 62 are circumferentially equipped with several outer lugs 64, phase Corresponding, the shaft hole inner wall of chain wheel case 63 is equipped with several and matched inner groovy 65 of outer lug 64；The unilateral bearing 62 it is interior The inner wall of circle 72 is equipped with several circumferentially uniformly distributed internal projections 70, corresponding, and crank shaft 19 is equipped with several with internal projection 70 Matched external groove 71；The number of teeth of the number of teeth of second drive sprocket 46 less than the second driven sprocket 47.

Preferably, the number of teeth of the first drive sprocket 35 is equal to the number of teeth of the second driven sprocket 47, the second drive sprocket 46 The number of teeth is equal to the number of teeth of the first driven sprocket 34.

Transmission mechanism 28 includes third drive sprocket 49 and third driven sprocket 50, the third drive sprocket 49 after described It is fixed on turnbarrel 20, third driven sprocket 50 is arranged on the wheel shaft of driving wheel 4, and the third driven sprocket 50 is winged Wheel.

For the front left transmission mechanism 26 of the utility model compared with front right transmission mechanism 27, the reduction ratio of the two is one big by one It is small, since electric bicycle dead weight is larger, the case where people is according to physical strength and road is rided, before selection use that can be autonomous Left Drive mechanism 26 or front right transmission mechanism 27 drive.The clutch transmission set 37 of current Left Drive mechanism 26 and the first drive sprocket 35 when separating (that is: rotation pushes disk 38 and leans against 24 position of crank, effect of the clutch transmission set 37 by spring 36 so that actively from Close block 42 and driven clutch block 43 disengage), pedal 25 drives crank 24, then crank shaft 19 is driven to rotate, actively due to first Bearing 69 is equipped between sprocket wheel 35 and crank shaft 19, crank shaft 19 dallies with respect to the first drive sprocket 35, at the same time, The inner ring 72 of unilateral bearing 62 is rotated with crank shaft 19, due to being equipped with unidirectional voussoir 74 between inner ring 72 and outer ring 73, to make Outer ring 73 is rotated synchronously with crank shaft 19, then 63 rotation of band movable sprocket set, and front right transmission mechanism 27 enters driving condition at this time, That is: the second drive sprocket 46 drives turnbarrel 20 to rotate by chain 48, the second driven sprocket 47, the turnbarrel 20 of rotation On be further fixed on third drive sprocket 49, third drive sprocket 49 connects third driven sprocket 50, so that driving wheel 4 be driven to revolve Turn, since third drive sprocket 49 is in rear (that is: the position between accommodation space 30 and driving wheel 4 of accommodation space 30 Set), it can be obtained under the premise of not influencing unitized frame wheelbase, battery volume and Vehicular seat cushion height, storage space Biggish installation space, so, rear transmission mechanism 28 can accomplish biggish transmission ratio；

When needing to obtain bigger transmission ratio, turns rotation and push disk 38, rotation pushes disk 38 axially towards clutch transmission It is mobile to cover 37 directions, pushes clutch transmission set 37 mobile axially towards 35 direction of the first drive sprocket at this point, rotation pushes disk 38, After the driven clutch block 43 on the active clutch block 42 and the first drive sprocket 35 on clutch transmission set 37 is interlocked, foot 25 drive cranks 24 are pedaled, then crank shaft 19 are driven to rotate, the crank installation axle 40 of polygon can drive clutch transmission set 37 same Step rotation, so as to drive the first drive sprocket 35 to rotate, the first drive sprocket 35 passes through chain 45, the first driven sprocket 34 It drives turnbarrel 20 to rotate, third drive sprocket 49 is further fixed on the turnbarrel 20 of rotation, third drive sprocket 49 connects Third driven sprocket 50 is connect, so that driving wheel 4 be driven to rotate, at the same time, unilateral bearing inner ring 72 is rotated with crank shaft 19, by It is greater than the transmission ratio of front right transmission mechanism 27 in the transmission ratio of front left transmission mechanism 26, outer ring 73 is with the second driven sprocket 47, chain The driving of item 48 and chain wheel case 63 and rotate, the revolving speed of outer ring 73 is greater than the revolving speed of inner ring 72 so that voussoir 74 disengages, Unilateral bearing 62 plays the role of freewheel clutch；When needing to obtain lower transmission ratio, then reversely turns rotation and pushes disk 38, Clutch transmission set 37 by reset spring 36 active force far from the first drive sprocket 35, active clutch block 42 and driven clutch block 43 disengage, then front right transmission mechanism 27 enters driving condition.

This secondary transmission of the utility model can reduce the first drive sprocket 35 of front left transmission mechanism 26, front right passes The diameter of second drive sprocket 46 of motivation structure 27, and the first drive sprocket 35, the second drive sprocket 46 can be made far from vehicle Middle line, not only merged out the settlement space that battery 32 is laid out downwards, but also increase foot's accommodation space 66 of vehicle, together When solve the problems, such as that storage space 75 is insufficient below seat cushion；And after using secondary transmission, reasonably by the third of largest outside diameter Drive sprocket 49 is arranged in the rear of accommodation space 30, and the integral thickness of treadle supporting position is avoided to increase, and avoids whole body Product becomes too fat to move, greatly improves the space utilization rate of vehicle interior.

The crank shaft 19 is placed in the lower section of foot pedal support frame 7；Pedal shaft sleeve 18 passes through left fixed arm 51, right fixed arm 52 realize with the intermediate tube 11 of foot pedal support frame 7 and fix；Horizontal line where the center of the crank shaft 19 is lower than fixing axle 17 Horizontal line where center.People is rided when manpower drives electric bicycle, thigh and shank can reach or level off to a straight line, Be conducive to ride people's having an effect to pedal transmission mechanism 5.

The both sides of the foot pedal support frame 7 are symmetrically arranged with foldable footrest mechanism 53, and foldable footrest mechanism 53 is wrapped Support 54, rear support 55, toe board 56, articulated shaft 57 and spring 58 before including, the preceding support 54, rear support 55 are fixed on pedal The lower section of support frame 7, the inner face of toe board 56 are equipped with hinged seat 59, before hinged seat 59 is placed in support 54 and rear support 55 it Between, and hinged seat 59 is realized and is connected by articulated shaft 57 and preceding support 54, rear support 55, and relative to preceding support 54, rear support 55 realize overturning；The spring 58 is set on articulated shaft 57, and spring 58 is between rear support 55 and hinged seat 59, described The elastic force of spring 58 makes toe board 56 always with the mobile trend towards preceding support 54；The preceding support 54 matches hinged seat 59 one end is equipped with center caulking groove 60 and two detents that are being centrally located 60 periphery of caulking groove and penetrating through with center caulking groove 60 Slot 61, two detent slots 61 are distributed in 180 degree, and the center caulking groove 60 and two detent slots 61, which are respectively combined, to be formed and hinged seat The consistent shape in 59 section.

When manpower is ridden, toe board 56 can be moved backward along the axis direction of hinged seat 59, before hinged seat 59 When caulking groove 60 is left at end, toe board 56 is rotated to the lower section of foot pedal support frame 7, until the front end of hinged seat 59 is embedded in caulking groove again In 60, so that completing the purpose that toe board 56 is stored to the lower section of foot pedal support frame 7 does not influence the rotation of pedal 25 after storage； When being driven by electricity, the toe board 56 for being accommodated in 7 lower section of foot pedal support frame is moved backward along the axis direction of hinged seat 59, to When caulking groove 60 is left in the front end of hinged seat 59, toe board 56 is flipped outward, until the front end of hinged seat 59 is embedded in caulking groove 60 again Interior, so that toe board 56 be made to open, the foot for riding personnel can be stepped on toe board 56, improve the driving comfort of riding people.

The accommodation space 30 of the utility model can also have other purposes: as shown in figure 13, main car frame 1 is equipped with seat cushion case 31, the bottom of seat cushion case 31 may extend to accommodation space 30, to improve the storage space 75 of seat cushion case 31.

Preferably, the battery 32 of electric bicycle can be placed on the bottom position of seat cushion case 31.

A kind of electric bicycle provided by the utility model embodiment is described in detail above, it is used herein Specific case is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help Understand the revealed technical solution of the utility model；At the same time, for those skilled in the art, according to the utility model Thought, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as The limitation of the utility model.

Claims (9)

1. a kind of electric bicycle, including main car frame, rear chain stay, front-wheel, driving wheel and pedal transmission mechanism, the main car frame packet Include main-beam pipe, the foot pedal support frame connecting with main-beam pipe and the seat cushion support frame connecting with foot pedal support frame；The pedal branch Support includes the intermediate tube of left side pipe, the right pipe and the connection left side pipe and the right pipe；Chain stay includes chain stay main body, sets after described Left arm and right arm in chain stay main body are set, left arm, the free end of right arm are hinged by left pivot, Thuban rotation mechanism respectively It is set to the fixing axle of the foot pedal support frame tail end；The rear end of chain stay main body is arranged in the driving wheel, and front-wheel is arranged in master The front end of vehicle frame, it is characterised in that:

The pedal transmission mechanism includes pedal shaft sleeve, crank shaft and turnbarrel, and the pedal shaft sleeve is set to main vehicle Frame, pedal shaft sleeve is interior to be equipped with bearing, and the crank shaft passes through the inner hole of bearing, and is respectively equipped with left foot at the both ends of crank shaft Pedal component, right pedal component；The turnbarrel is sheathed in fixing axle, and bearing is provided in fixing axle, turnbarrel It can be rotated around fixing axle by bearing；It is equipped with front left transmission mechanism between the crank shaft and turnbarrel or/and front right is driven Mechanism is equipped with rear transmission mechanism between turnbarrel and driving wheel；The front left transmission mechanism, front right transmission mechanism respectively close to It is managed in left side pipe, the right；

The front left transmission mechanism, front right transmission mechanism, pedal shaft sleeve and turnbarrel are laid out jointly forms receiving sky Between.

2. electric bicycle according to claim 1, it is characterised in that: be provided with seat cushion case, electric power storage on the main car frame Pond is in the lower section of seat cushion case, and battery matching is placed in accommodation space.

3. electric bicycle according to claim 1, it is characterised in that: be provided with seat cushion case, seat cushion on the main car frame Case extends to accommodation space.

4. electric bicycle according to claim 3, it is characterised in that: be equipped with battery, and electric power storage in the seat cushion case Pond is in the bottom position of seat cushion case.

5. electric bicycle according to claim 1, it is characterised in that: the front left transmission mechanism includes the first drive chain Wheel apparatus and the first driven sprocket, first drive sprocket apparatus include the first drive sprocket, reset spring, clutch transmission set Disk is pushed with rotation, first drive sprocket is by bearing and pedal axis connection, and the first drive sprocket can be with respect to crank shaft reality Now rotate；The crank shaft includes main body, two crank installation axles for being separately positioned on main body both ends, the crank installation axle Section is polygon；The centre bore of the clutch transmission set is set in crank installation axle, and clutch transmission is covered in crank installation axle On can axially move, reset spring be in clutch transmission set the first drive sprocket between；The shape and song of the centre bore The matching of handle installation axle；One end that the clutch transmission covers corresponding first drive sprocket is equipped with several active clutches being spaced apart Block, the first drive sprocket are equipped with several driven clutch blocks being spaced apart；One section of outer spiral shell is additionally provided in the crank installation axle Line, rotation push valve snail and connect on external screw thread, and revolve and push the outer end face that disk is against clutch transmission set, and rotation rotation pushes disk and makes to revolve Pushing disk pushes clutch transmission set mobile towards the first drive sprocket direction, so that active clutch block be made to be connected to adjacent two In interval between driven clutch block, realizes clutch transmission set with the first drive sprocket and link；First drive sprocket is logical It crosses chain connection and drives the first driven sprocket, the first driven sprocket is fixed on turnbarrel；The tooth of first drive sprocket Number is greater than the number of teeth of the first driven sprocket.

6. electric bicycle according to claim 1 or 5, it is characterised in that: the front right transmission mechanism includes being fixed on The second drive sprocket on crank shaft, the second driven sprocket being fixed on turnbarrel and the second drive sprocket of connection and the The chain of two driven sprockets；Second drive sprocket includes being arranged the unilateral bearing being fixed on crank shaft and being set in The chain wheel case with the gear teeth of unilateral bearing outer peripheral surface, the outer wall of the unilateral bearing are circumferentially equipped with several outer lugs, relatively It answers, the shaft hole inner wall of chain wheel case is equipped with several and matched inner groovy of outer lug；The inner wall of the inner ring of the unilateral bearing is set There are several circumferentially uniformly distributed internal projections, corresponding, crank shaft is equipped with several with the matched external groove of internal projection；Described The number of teeth of the number of teeth of two drive sprockets less than the second driven sprocket.

7. electric bicycle according to claim 6, it is characterised in that: transmission mechanism includes third drive sprocket after described With third driven sprocket, the third drive sprocket is fixed on turnbarrel, and the wheel of driving wheel is arranged in third driven sprocket On axis, the third driven sprocket is flywheel；The number of teeth of the third drive sprocket is greater than the number of teeth of third driven sprocket.

8. electric bicycle according to claim 1, it is characterised in that: the both sides of the foot pedal support frame are symmetrically arranged with can Folding footrest mechanism, foldable footrest mechanism include preceding support, rear support, toe board, articulated shaft and spring, are propped up before described Seat, rear support are fixed on the lower section of foot pedal support frame, and the inner face of toe board is equipped with hinged seat, and hinged seat is placed in preceding support with after Between support, and hinged seat is realized and is connected by articulated shaft and preceding support, rear support, and is realized relative to preceding support, rear support Overturning；The spring is set on articulated shaft, and spring is between rear support and hinged seat, and the elastic force of the spring to put Sole has the mobile trend towards preceding support always；One end of the preceding support matching hinged seat is equipped with center caulking groove and divides Cloth is distributed in two detent slots center caulking groove periphery and with the perforation of center caulking groove, two detent slots in 180 degree, the center Caulking groove and two detent slots are respectively combined to be formed and the consistent shape in the section of hinged seat.

9. electric bicycle according to claim 1, it is characterised in that: the crank shaft is placed under foot pedal support frame Side；Pedal shaft sleeve is realized by the intermediate tube of left fixed arm, right fixed arm and foot pedal support frame and is fixed；In the crank shaft Horizontal line where the heart is lower than the horizontal line where fixed axis center.