CN211568202U - Electric folding bicycle - Google Patents

Abstract

The utility model relates to the field of bicycles, in particular to an electric folding bicycle, which comprises a main beam frame, a handlebar, a front wheel, a rear wheel, a seat vertical tube connected with a seat, a front wheel folding structure and a rear wheel folding structure; the handlebar is arranged at the front end of the main beam frame; the seat vertical pipe is arranged at the joint of the main beam frame and the rear wheel folding structure; the front wheel passes through the rotatable setting of front wheel beta structure in girder structure front end bottom, and the rear wheel passes through the rotatable setting of rear wheel beta structure at the girder structure end, accomodates in girder structure bottom after front wheel and rear wheel are folded to be accomplished, aligns the overlap each other between front wheel and the rear wheel, the utility model discloses a front wheel beta structure and rear wheel beta structure accomodate in girder structure bottom after folding front wheel and rear wheel simultaneously, make and align the overlap each other between front wheel and the rear wheel, can reduce the volume of folding back bicycle, wherein the girder structure is circular-arcly, and the radian phase-match of folding front wheel and rear wheel after with, can be better accomodate the wheel, reduce folding shared space.

Description

Electric folding bicycle

Technical Field

The utility model relates to a bicycle field, more specifically relates to an electric folding bicycle.

Background

The electric bicycle is a green and environment-friendly vehicle commonly used by people in daily life, and along with the popularization of the concept of environmental protection and energy conservation, the electric bicycle is more and more widely applied to the daily life of people.

Although the electric bicycle is convenient for daily travel, the general electric bicycle is too large in size, so that when the electric bicycle needs to be carried and moved, the traditional electric bicycle is inconvenient to carry and move due to large size, and a series of electric folding bicycles are also available on the market to solve the problem.

Therefore, it is necessary to provide an electric folding bicycle that solves the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome above-mentioned prior art at least one defect (not enough), provide one kind and can fold up front wheel and rear wheel simultaneously in the girder erection bottom to reduce the electric folding bicycle of folding back volume.

In order to solve the technical problem, the technical scheme of the utility model as follows: a main beam frame, a handlebar, a front wheel, a rear wheel and a seat vertical tube connected with a seat of an electric folding bicycle is characterized by further comprising a front wheel folding structure and a rear wheel folding structure;

the handlebar is arranged at the front end of the main beam frame;

the seat vertical pipe is arranged at the joint of the main beam frame and the rear wheel folding structure;

the front wheel is rotatably arranged at the bottom of the front end of the main beam frame through the front wheel folding structure, the rear wheel is rotatably arranged at the tail end of the main beam frame through the rear wheel folding structure, the front wheel and the rear wheel are folded and are accommodated at the bottom of the main beam frame, the front wheel and the rear wheel are mutually aligned and overlapped, through the arrangement of the front wheel folding structure and the rear wheel folding structure, when the electric bicycle needs to be folded, the front wheel and the rear wheel of the electric bicycle can be simultaneously folded and accommodated at the bottom of the main beam frame, wherein the front wheel and the rear wheel are mutually aligned and overlapped, thus, the front wheel and the rear wheel which are overlapped and aligned after being folded not only reasonably utilize the space below the main beam frame, but also utilize the front wheel and the rear wheel to be arranged side by side due to the overlapping and aligning mode, the whole volume of the folded electric bicycle is reduced, and simultaneously, the front wheel and the rear wheel can be utilized to, the main beam frame is circular-arc, and with the radian phase-match of folding front wheel and rear wheel, electric bicycle wheel is accomodate in being used for that such design can be better, and shared space after effectual reduction electric bicycle is folding is convenient for people's daily deposit and trip.

Furthermore, the front wheel folding structure comprises a front wheel folding quick-release handle, a bearing, a spring, a forearm hollow rotating shaft, a movable cover, a forearm connected with the forearm hollow rotating shaft and a T-shaped stand pipe arranged at the lower end of a bowl group at the front end of the main beam frame;

the forearm hollow rotating shaft is arranged in a T-shaped vertical pipe at the lower end of the bowl group through a bearing;

one end of the spring is sleeved at the tail end of the forearm hollow rotating shaft, and the other end of the spring is contacted with the inner side of the movable cover;

the movable cover is respectively provided with a convex latch and a movable lock pin;

a sliding positioning groove matched with the convex lock is arranged on the T-shaped vertical pipe at the lower end of the bowl group, and a lock catch groove clamped with the movable lock pin is arranged on the front arm hollow rotating shaft;

the inside of the forearm hollow rotating shaft is movably provided with a lock catch pull rod, one end of the front wheel folding quick-release handle is connected with the lock catch pull rod, the other end of the front wheel folding quick-release handle is pressed outside the front arm, when the front wheel needs to be folded, only the locking anti-release buckle on the front wheel folding quick-release handle needs to be loosened, at the moment, under the action of a spring, the movable lock pin on the movable cover is separated from the front wheel unfolding lock catch groove on the forearm hollow rotating shaft, but the raised lock of the movable cover is still clamped on the sliding positioning groove of the T-shaped vertical pipe at the lower end of the bowl group, because the movable lock pin is separated from the front wheel unfolding lock catch groove on the forearm hollow rotating shaft, at the moment, the forearm is rotated, the forearm drives the forearm limiting pin to move in the limiting groove, the front wheel realizes steering, the front arm limiting pin rotates to the other, the front wheel folding lock catch groove on the forearm hollow rotating shaft is clamped with the movable lock pin of the movable cover to complete the folding and fixing of the front wheel.

Furthermore, the bowl group further comprises a front arm limiting pin connected with the front arm, a limiting groove is formed in the T-shaped vertical pipe at the lower end of the bowl group, and the front arm limiting pin is arranged in the limiting groove.

Furthermore, the locking anti-loosening buckle is arranged on the front wheel folding quick-release handle, and the front arm can be quickly locked through the locking anti-loosening buckle, so that the front arm folding quick-release handle is more fixed, and loosening and rebounding are prevented.

The steering device further comprises a front wheel steering limit key arranged at the front end of the main beam frame, a front wheel steering limit groove is formed in the T-shaped vertical pipe at the lower end of the bowl group, and the front wheel steering limit key is movably clamped on the front wheel steering limit groove.

Further, still include handlebar quick detach hand (hold), the handlebar passes through handlebar quick detach hand (hold) and is connected with bowl group lower extreme T shape riser, through the setting of handlebar quick detach hand (hold), when the bicycle needs folding, can open handlebar quick detach hand (hold), at this moment, the handlebar can be placed in the front wheel outside after folding, can effectual saving space, also can reduce the volume after the bicycle is folded.

Furthermore, the rear wheel folding structure comprises a rotary base, a folding positioning lock rod, a main beam frame connecting seat connected with a main beam frame, a seat vertical pipe connecting and rotating device arranged between the rotary base and the main beam frame connecting seat and a rear wheel folding quick-release handle arranged on the seat vertical pipe;

the rotating base is rotatably arranged at the bottom of the main beam frame connecting seat, the folding positioning lock rod is arranged on the main beam frame connecting seat, and the rotating seat vertical pipe is connected with the rotating device for positioning;

the folding quick detach hand (hold) of rear wheel that is equipped with on the girder structure respectively resets recess and locking piece seat, the mobilizable block of the folding quick detach hand (hold) of rear wheel is on the locking piece seat, after rotating base turned angle, can connect rotary device to the seat riser fast through folding positioning lock pole and fix the auto-lock, avoid the seat riser to connect rotary device and rotate once more, thereby connect rotary device to the seat riser and carry out spacingly, at this moment, the rear wheel is folding the collection in the girder structure bottom of folding back, overlap the alignment with the front wheel and place, can all collect front wheel and rear wheel in the girder structure below simultaneously like this, consequently can effectual volume after reducing folding, simple and practical.

Furthermore, the seat vertical pipe connecting and rotating device comprises a rotating shaft fixing and mounting sleeve arranged on the main beam frame connecting seat and a rotating shaft arranged on the rotating base;

the rotating shaft and the rotating shaft fixed mounting sleeve are respectively provided with a lock hole matched with the folding positioning lock rod;

the rotation axis cover is established in the rotation axis fixed mounting cover on the girder frame connecting seat, through the setting of rotation axis fixed mounting cover and rotation axis, rotating base can rotate on the girder frame connecting seat as required, and when needs locking, folding positioning lock pole only need inject the rotation axis simultaneously and can be fixed to seat riser connection rotary device auto-lock in the keyhole on the rotation axis fixed mounting cover.

Furthermore, the folding positioning lock rod device also comprises a manual pull rod and a folding positioning lock rod spring;

the bottom of the main beam frame connecting seat is provided with a connecting hole;

the folding positioning lock rod spring is arranged on the folding positioning lock rod, the manual pull rod is connected with the folding positioning lock rod, after the rotating shaft rotates, the lock hole in the rotating shaft is overlapped with the lock hole in the rotating shaft fixed mounting sleeve, the folding positioning lock rod is inserted into the lock hole in the rotating shaft under the action of the folding positioning lock rod spring, and the rotating shaft after rotating is fixed.

Furthermore, still including setting up the seat riser folding positioner on rotating base, the seat riser passes through the setting of seat riser folding positioner and locates at the handing-over department of main beam frame and rear wheel beta structure, through the setting of seat riser folding positioner, can fix a position the seat riser after the rotation, prevents to rotate the seat riser after the target in place and takes place to rotate, owing to carry out folding control to the seat riser, is convenient for further reduce the volume of folding back bicycle.

Furthermore, the seat riser folding and positioning device comprises a limiting pin, a folding and positioning arm, a return spring, a hollow connecting sleeve rod arranged on the seat riser and a rotary hollow rod arranged on the rotary base;

the hollow connecting sleeve rod is sleeved in the rotary hollow rod;

the hollow connecting sleeve rod is provided with a clamping groove, the limiting pin is arranged in the clamping groove, and the rotary hollow rod is provided with a limiting screw matched with the limiting pin;

the bottom of the seat vertical pipe is provided with a folding limit key, the folding positioning arm is sleeved on the folding limit key through a reset spring, when the seat vertical pipe rotates downwards and is folded in place, the folding positioning arm locks the hollow connecting sleeve rod and the rotary hollow rod, because the hollow connecting sleeve rod is provided with a clamping groove, and the rotary hollow rod is provided with a limit screw, the rotary hollow rod can rotate upwards on the hollow connecting sleeve rod and can not be pulled out, in addition, the limit pin is arranged in the clamping groove and can be used for being matched with the limit screw to control the angle range of rotation, when the seat vertical pipe rotates in place, the anti-rotation positioning holes on the hollow connecting sleeve rod and the rotary hollow rod are superposed, when the seat vertical pipe rotates downwards and is folded in place, the folding positioning arm locks the hollow connecting sleeve rod and the rotary hollow rod, because the seat vertical pipe and the rotary base are connected through the hollow connecting sleeve rod and the rotary hollow rod, when the seat vertical pipe rotates downwards to the position where the folding limiting key and the rotary hollow rod touch and block, the folding positioning arm is triggered to position and lock the rotary hollow rod and the hollow connecting sleeve rod, so that a fixing structure is formed.

Furthermore, the hollow connecting sleeve rod and the rotary hollow rod are respectively provided with an anti-rotation positioning hole, the anti-rotation positioning holes are matched with the size of the folding positioning arms, the anti-rotation positioning holes are formed in the hollow connecting sleeve rod and the rotary hollow rod, when the seat vertical pipe is rotated downwards to be in place and touched to be blocked, the folding positioning arms are just aligned with the anti-rotation positioning holes, and the folding positioning arms are triggered and then inserted into the anti-rotation positioning holes, so that the rotary hollow rod and the hollow connecting sleeve rod are positioned and locked.

Furthermore, the locking device also comprises a locking block connecting rod and a locking block matched with the locking block seat, one end of the locking block connecting rod is connected with the rear wheel folding quick-release handle, the other end of the locking block connecting rod is connected with the locking block, and the locking block connecting rod and the locking block arranged on the rear wheel folding quick-release handle can be used for positioning and locking the locking block seat on the main beam frame so as to form a fixed state.

Furthermore, the locking device further comprises a locking buckle matched with the reset groove of the rear wheel folding quick-release handle, wherein a locking lockhole is formed in the rear wheel folding quick-release handle, and the locking buckle is matched with the locking lockhole in the rear wheel folding quick-release handle.

Furthermore, the anti-loosening lock catch comprises a round-head movable buckle, a torsion spring and an anti-loosening fixed seat;

one end of the round head movable buckle is slidably sleeved in the anti-loosening lock hole, and the other end of the round head movable buckle is connected with the anti-loosening fixed seat;

the torsion spring is wound between the round head movable buckle and the anti-loosening fixed seat to form a whole.

Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:

(1) the utility model discloses an electric folding bicycle, through front wheel beta structure and rear wheel beta structure's setting, when needs are folding, can accomodate in the girder structure bottom with the front wheel of bicycle and rear wheel folding back simultaneously, wherein, it overlaps to align each other between front wheel and the rear wheel, overlap the front wheel and the rear wheel of alignment after folding like this, both reasonable space of utilizing the girder structure below, also because the mode that overlaps the alignment sets up front wheel and rear wheel side by side, the whole volume of folding back bicycle has been reduced, also can be used for the propulsion after folding the utility model discloses in, the girder structure is circular-arcly, with the radian phase-match of folding front wheel and rear wheel, such design, can be better be used for accomodating the bicycle wheel, the shared space of effectual reduction bicycle folding back, be convenient for people's daily deposit and trip.

(2) When the front wheel needs to be folded, the electric folding bicycle disclosed by the utility model only needs to loosen the locking anti-loose buckle on the folding quick-dismantling handle of the front wheel, at the moment, under the action of the spring, the movable lock pin on the movable cover is separated from the front wheel unfolding lock catch groove on the forearm hollow rotating shaft, however, the convex latch of the movable cover is still clamped on the sliding positioning groove of the T-shaped vertical pipe at the lower end of the bowl group, because the movable lock pin is separated from the front wheel on the forearm hollow rotating shaft by unfolding the lock catch groove, at the moment, the forearm is rotated to drive the forearm limit pin to move in the limit groove, the front wheel realizes steering, when the front arm limiting pin rotates to the other side of the limiting groove, the front wheel rotates and is folded in place, at the moment, only the folding quick-release handle of the front wheel needs to be pressed, so that the folding locking groove of the front wheel on the front arm hollow rotating shaft is clamped with the movable locking pin of the movable cover, and the folding and fixing of the front wheel is completed.

(3) The utility model discloses an electric folding bicycle, after rotating base for girder structure connecting seat turned angle, can fix the locking to the rotation axis fast through folding positioning lock pole, avoid the rotation axis to rotate once more, thereby it is spacing to carry out the rotation axis, rotating base also turns to girder structure connecting seat one side simultaneously, then, the rear wheel is collected in the girder structure bottom after folding, overlap with the front wheel and place it, can all collect front wheel and rear wheel in the girder structure below like this simultaneously, consequently can effectual volume after the shrink back, simple and practical.

(4) The utility model discloses an electric folding bicycle, down rotate folding target in place when the seat riser, folding hollow connecting sleeve pole of location arm locking and rotatory hollow rod, because be connected through hollow connecting sleeve pole and rotatory hollow rod between seat riser and the rotating base, down rotate folding spacing key and rotatory hollow rod when the seat riser and run into on and hinder the position, folding location arm is triggered the hollow rod of pairing rotation and hollow connecting sleeve pole and fixes a position the locking to form fixed knot and construct.

Drawings

Fig. 1 is a schematic structural view of the bicycle of the present invention when it is unfolded.

Fig. 2 is a schematic view of the bicycle of the present invention at another angle in the unfolded state.

Fig. 3 is a schematic structural view of the bicycle of the present invention when folded.

Fig. 4 is a schematic structural view of the bicycle of the present invention at another angle when folded.

Fig. 5 is a schematic structural view of the side of the bicycle of the present invention when folded.

Fig. 6 is a schematic structural view of the folding structure of the middle front wheel of the present invention.

Fig. 7 is a schematic structural view of the inside of the T-shaped vertical pipe at the lower end of the middle bowl group of the present invention.

Fig. 8 is a schematic structural view of the T-shaped riser at the lower end of the middle bowl group according to another angle of the internal assembly.

Fig. 9 is a schematic structural view of the T-shaped vertical pipe at the lower end of the middle bowl group according to the present invention after being disassembled.

Fig. 10 is a schematic view of the structure of the T-shaped riser at the lower end of the middle bowl group according to the present invention after being disassembled at another angle.

Fig. 11 is a schematic structural view of the folding structure of the middle and rear wheels of the present invention.

Fig. 12 is a schematic structural view of the middle and rear wheel folding structure of the present invention after being disassembled.

Fig. 13 is a schematic structural view of the middle and rear wheel folding structure of the present invention taken apart at another angle.

Fig. 14 is a schematic structural view of the folding structure of the rear wheel in another angle of the present invention.

Fig. 15 is a schematic structural view of the folding structure of the middle and rear wheels of the present invention after being disassembled.

Fig. 16 is a schematic structural view of the hollow connecting sleeve rod of the present invention with the hollow rod sleeve rotating.

Fig. 17 is a schematic structural view of the hollow connecting loop bar of the present invention.

In the drawing, 1 is a main beam frame, 2 is a handlebar, 3 is a front wheel, 4 is a rear wheel, 5 is a seat, 6 is a seat vertical tube, 7 is a front wheel folding structure, 8 is a rear wheel folding structure, 9 is a front wheel folding quick-release handle, 10 is a T-shaped vertical tube at the lower end of a bowl group, 11 is a bearing, 12 is a spring, 13 is a forearm hollow rotating shaft, 14 is a movable cover, 15 is a forearm, 16 is a front wheel steering limit groove, 17 is a movable lock pin, 18 is a lock catch groove, 19 is a lock catch pull rod, 20 is a raised lock catch, 21 is a sliding positioning groove, 22 is a forearm limit pin, 23 is a limit groove, 24 is a locking anti-loose catch, 25 is a handlebar quick-release handle, 26 is a rotating base, 27 is a seat vertical tube connecting and rotating device, 28 is a folding positioning lock rod, 29 is a main beam frame connecting seat, 30 is a rear wheel folding quick-release handle, 31 is a rear wheel folding handle reset groove, 32 is, 34 is a manual pull rod, 35 is a communication hole, 36 is a seat riser folding positioning device, 37 is a limiting pin, 38 is a folding positioning arm, 39 is a hollow connecting sleeve rod, 40 is a rotary hollow rod, 41 is a folding limiting key, 42 is an anti-rotation positioning hole, 43 is a locking block connecting rod, 44 is a locking block, 45 is an anti-loosening lock catch, 46 is an anti-loosening lock hole, 47 is a round-head movable buckle, 48 is an anti-loosening fixed seat, 49 is a rotary shaft fixed mounting sleeve, 50 is a rotary shaft, 51 is a clamping groove, 52 is a limiting screw, 53 is a front wheel folding lock catch groove, and 54 is a rotary bearing.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, so to speak, as communicating between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art. The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

As shown in fig. 1-5, an electric folding bicycle comprises a main beam frame 1, a handlebar 2, a front wheel 3, a rear wheel 4, a seat tube 6 connected with a seat 5, a front wheel folding structure 7 and a rear wheel folding structure 8; the handlebar 2 is arranged at the front end of the main beam frame 1; the seat vertical pipe 6 is arranged at the joint of the main beam frame 1 and the rear wheel folding structure 8; the front wheel 3 is rotatably arranged at the bottom of the front end of the main beam frame 1 through a front wheel folding structure 7, the rear wheel 4 is rotatably arranged at the tail end of the main beam frame 1 through a rear wheel folding structure 8, the front wheel 3 and the rear wheel 4 are accommodated at the bottom of the main beam frame 1 after being folded, the front wheel 3 and the rear wheel 4 are mutually aligned and overlapped, the front wheel folding structure 7 and the rear wheel folding structure 8 can fold the front wheel 3 and the rear wheel 4 at the same time and store the folded front wheel and the rear wheel at the bottom of the main beam frame 1, wherein, the front wheel 3 and the rear wheel 4 are mutually aligned and overlapped, so that the volume of the folded bicycle can be reduced by the front wheel 3 and the rear wheel 4, in the utility model, the main beam frame 1 is arc-shaped and is matched with the radian of the front wheel 3 and the rear wheel 4 after being folded, such design, can be better be used for accomodating bicycle wheel, shared space after effectual reduction bicycle is folded.

As shown in fig. 6-10, the front wheel folding structure 7 comprises a front wheel folding quick-release handle 9, a bearing 11, a spring 12, a front arm hollow rotating shaft 13, a movable cover 14, a front arm 15 connected with the front arm hollow rotating shaft 13, and a bowl group lower end T-shaped vertical pipe 10 arranged at the front end of a main beam frame, wherein the front arm hollow rotating shaft is arranged in the bowl group lower end T-shaped vertical pipe through the bearing; one end of the spring is sleeved at the tail end of the forearm hollow rotating shaft, and the other end of the spring is contacted with the inner side of the movable cover; the movable cover is respectively provided with a convex latch 20 and a movable lock pin 17; a T-shaped vertical pipe at the lower end of the bowl group is provided with a sliding positioning groove 21 matched with the convex latch 20, and a front wheel unfolding latch groove 18 and a front wheel folding latch groove 53 which are clamped with the movable latch are arranged on the front arm hollow rotating shaft; the inside of the forearm hollow rotating shaft is movably provided with a lock catch pull rod 19, one end of the front wheel folding quick-release handle is connected with the lock catch pull rod 19, the other end is pressed on the outer side of the forearm, in addition, the folding quick-release handle also comprises a forearm limit pin 22 connected with the forearm, a limit groove 23 is arranged on the T-shaped vertical pipe at the lower end of the bowl group, the forearm limit pin is arranged in the limit groove, when the front wheel needs to be folded, only the locking anti-loose buckle on the front wheel folding quick-release handle needs to be loosened, at the moment, under the action of a spring, the movable lock pin on the movable cover is separated from the front wheel unfolding lock catch groove on the forearm hollow rotating shaft, but the convex lock catch of the movable cover is still clamped on the sliding positioning groove of the T-shaped vertical pipe at the lower end of the bowl group, because the movable lock pin is separated from, the front wheel is realized turning to, and the front arm spacer pin rotates the opposite side in spacing groove, and the front wheel rotates folding back that targets in place, at this moment, only needs to compress tightly the folding quick detach handle of front wheel, makes the folding hasp groove of front wheel on the hollow axis of rotation of forearm establish with the activity lockpin card of movable cover, accomplishes the front wheel and folds fixedly.

Wherein, be equipped with locking anti-loosening 24 on the folding quick detach handle of front wheel, setting through locking anti-loosening, can lock the forearm fast, it is more fixed to make the folding quick detach handle of forearm, prevent the lax bounce-back, in addition, still including setting up the front wheel steering spacing key at the girder frame front end, be equipped with front wheel steering spacing groove 16 on the lower extreme T shape riser of bowl group, mobilizable the card of front wheel steering spacing key is established on the front wheel steering spacing groove, in addition, still include handlebar quick detach hand (hold) 25, handlebar 2 is connected with bowl group lower extreme T shape riser 10 through handlebar quick detach hand (hold) 25, setting through handlebar quick detach hand (hold) 25, when the bicycle needs to be folded, handlebar quick detach hand (hold) 25 can be opened, at this moment, handlebar 2 can put in the 3 outsides of front wheel after folding, can effectually practice thrift the space, also can reduce.

As shown in fig. 11, the rear wheel folding structure 8 comprises a rotary base 26, a folding positioning lock rod 28, a main beam connecting seat 29 connected with the main beam frame 1, a seat stand pipe connecting rotary device 27 arranged between the rotary base 26 and the main beam connecting seat 29, and a rear wheel folding quick-release handle 30 arranged on the seat stand pipe 6; the rotating base 26 is rotatably arranged at the bottom of a main beam frame connecting seat 29, and the folding positioning lock rod 28 is arranged on the main beam frame connecting seat 29 and is used for positioning the rotating seat vertical pipe connecting and rotating device 27; the main beam frame 1 is respectively provided with a rear wheel folding quick-release handle reset groove 31 and a locking block seat 32, the movable block of a rear wheel folding quick-release handle 30 is arranged on the locking block seat 32, after the rotating base 26 rotates for the rotation angle of the main beam frame connecting seat 29, the seat vertical pipe connecting and rotating device 27 can be quickly fixed and self-locked through the folding positioning locking rod 28, the seat vertical pipe connecting and rotating device 27 is prevented from rotating again, thereby the seat vertical pipe connecting and rotating device 27 is limited, at the moment, the rear wheel 4 is folded and collected at the bottom of the main beam frame 1 and is placed with the front wheel 3 in an overlapped mode, and the front wheel 3 and the rear wheel 4 can be collected below the main beam frame simultaneously, so that the folding size of the folding frame can be effectively reduced, and the folding device is simple.

As shown in fig. 12, seat riser connection rotating means 27 includes a rotating shaft fixing attachment sleeve 49 provided on main beam attachment seat 29 and a rotating shaft 50 provided on rotating base 26; a rotary bearing 54 is arranged on the rotary shaft 50, and a lock hole 33 matched with the folding positioning lock rod 28 is arranged on both the rotary shaft 50 and the rotary shaft fixing mounting sleeve 49; the rotating shaft 50 is sleeved in the rotating shaft fixing and mounting sleeve 49 on the main beam frame connecting seat, and the rotating base 26 can rotate on the main beam frame connecting seat 29 as required through the arrangement of the rotating shaft fixing and mounting sleeve 49 and the rotating shaft 50.

As shown in fig. 13-14, further comprising a manual pull rod 34 and a fold detent latch spring; the bottom of the connecting seat of the main beam frame is provided with a through hole 35; the folding positioning lock rod spring is arranged on the folding positioning lock rod 28, the manual pull rod 34 is connected with the folding positioning lock rod 28, in addition, the folding positioning device 36 for the seat vertical tube is arranged on the rotary base 26, the seat vertical tube 6 is arranged at the joint of the main beam frame 1 and the rear wheel 4 folding structure through the folding positioning device 36 for the seat vertical tube, the seat vertical tube 6 after being rotated can be positioned through the arrangement of the folding positioning device 36 for the seat vertical tube, the seat vertical tube 6 after being rotated in place is prevented from rotating, and the folding control is carried out on the seat vertical tube 6, so that the volume of the folded bicycle can be further reduced.

As shown in fig. 15-17, the seat riser folding positioning device comprises a limit pin 37, a folding positioning arm 38, a return spring, a hollow connecting sleeve rod 39 arranged on the seat riser 6 and a rotary hollow rod 40 arranged on the rotary base; the hollow connecting sleeve rod is sleeved in the rotary hollow rod; the hollow connecting sleeve rod is provided with a clamping groove 51, the limiting pin 37 is arranged in the clamping groove, and the rotary hollow rod 40 is provided with a limiting screw 52 matched with the limiting pin; the bottom of the seat vertical pipe is provided with a folding limit key 41, the folding positioning arm is sleeved on the folding limit key through a reset spring, when the seat vertical pipe rotates downwards and is folded in place, the folding positioning arm locks the hollow connecting loop bar 39 and the rotary hollow rod 40, as the seat vertical pipe 6 is connected with the rotary base 26 through the hollow connecting loop bar 39 and the rotary hollow rod 40, when the seat vertical pipe 6 rotates downwards to the folding limit key 41 and contacts with the stop position on the rotary hollow rod 40, the folding positioning arm 38 is triggered to position and lock the rotary hollow rod 40 and the hollow connecting loop bar 39, thereby forming a fixed structure, wherein the hollow connecting loop bar 39 and the rotary hollow rod 40 are both provided with anti-rotation positioning holes 42, the anti-rotation positioning holes 42 are matched with the size of the folding positioning arm 38, the anti-rotation positioning holes 42 are arranged on the rotary hollow rod 40, when the seat vertical pipe 6 rotates downwards to the right position and contacts with the stop position, the folding positioning arm 38 is just aligned with the anti-rotation positioning hole 42, the folding positioning arm 38 is triggered and then inserted into the anti-rotation positioning hole 42, thereby positioning and locking the rotating hollow rod 40 and the hollow connecting loop bar 39, besides, the folding positioning arm also comprises a locking block connecting rod 43 and a locking block 44 matched with the locking block seat 32, one end of the locking block connecting rod 43 is connected with the rear wheel folding quick-release handle 30, the other end is connected with the locking block 44, the locking block connecting rod 43 and the locking block 44 arranged on the rear wheel folding quick-release handle 30 can be used for positioning and locking with the locking block seat 32 on the main beam frame 1, thereby forming a fixed state, in addition, the folding quick-release handle also comprises a locking buckle 45 matched with the rear wheel folding quick-release handle reset groove 31 on the main beam frame 1, the rear wheel folding quick-release handle 30 is provided with a locking hole 46, the locking buckle 45 is arranged on the rear wheel folding quick-, the locking hole 46 is formed in the rear-wheel folding quick-release handle 30, and the rear-wheel folding quick-release handle 30 is pressed down when the bicycle is in an unfolded state, so that the round-head movable buckle 47 arranged on the rear-wheel folding quick-release handle reset groove of the main beam frame 1 and the locking hole 46 are automatically aligned and self-locked to prevent the reverse locking and tripping, wherein the locking lock catch 45 comprises the round-head movable buckle 47, a torsion spring and a locking fixing seat 48 matched with the rear-wheel folding quick-release handle reset groove 31; one end of the round-head movable buckle 47 is slidably sleeved in the anti-loosening lock hole 48, and the other end of the round-head movable buckle is connected with the anti-loosening fixed seat 48; the torsional spring is wound and is established and become an organic whole between button head activity is detained 47 and locking fixing base 48, because locking fixing base 48 is with the folding quick detach hand (hold) of rear wheel reset groove 31 assorted, when pushing away button head activity and detaining 47, the torsional spring is flicked, and the button head activity of locking fixing base 48 is detained 47 and the locking lockhole 46 of the folding quick detach hand (hold) of rear wheel 30 and is broken away from again, breaks off the folding quick detach hand (hold) 30 rotation of rear wheel again, and the folding quick detach hand (hold) 30 of rear wheel can rotate the unblock.

Examples

When the bicycle needs to be folded after being used, the round-head movable buckle is pushed open only, so that the rear wheel folding quick-release handle is separated from the round-head movable buckle, at the moment, the rear wheel folding quick-release handle is rotated, the locking block is separated from the locking block seat on the main beam frame, the unlocking of the rear wheel folding quick-release handle is completed, when the rear wheel is rotated forwards, the rotating shaft fixing and mounting sleeve is taken as the central point of the central shaft, the seat vertical pipe and the rotating base are driven to rotate and fold towards the front radius part by the circumferential track line, at the moment, the rotating base and the related connected components rotate in the rotating shaft fixing and mounting sleeve, the rotating direction of the connected related components of the seat vertical pipe and the unfolding static direction are unchanged, meanwhile, the rotating hollow rod also rotates on the hollow connecting sleeve rod, as the limiting pin is arranged on the clamping groove of the hollow connecting sleeve rod, the limiting screw is, rotatory hollow pole rotates the position, at this moment, rotating base drives the rear wheel and also accomplishes foldingly, the direction rotation of rotation axis lockhole becomes the opposite direction, and counterpoint with folding positioning lock pole, under the effect of folding positioning lock pole spring, folding positioning lock pole is automatic to counterpoint with the lockhole and tightly locks, thereby to the fixed position of rotation axis locking girder connecting seat, and when needing folding seat, need down rotate the seat riser, the seat riser is run into above folding spacing key and the rotatory hollow pole and is hindered the position, at this moment folding locating arm just in time with prevent that the rotation locating hole is counterpointed, folding locating arm inserts after being triggered automatically and prevents to lock in the rotation locating hole, prevent that hollow connecting sleeve pole and rotatory hollow pole are rotatory, realize folding fixed.

When the rear wheel is folded and fixed, when the front wheel is required to be folded, only the locking anti-loose buckle of the front wheel folding quick-release handle is required to be loosened to break the front wheel folding quick-release handle, at the moment, the movable lock pin on the movable cover is separated from the lock catch groove on the hollow rotating shaft of the front arm under the action of the spring, but the raised lock of the movable cover is still clamped on the sliding positioning groove of the T-shaped vertical pipe at the lower end of the bowl group, because the movable lock pin is separated from the front wheel unfolding lock catch groove on the hollow rotating shaft of the front arm, at the moment, the front arm is rotated, the front arm limit pin rotates in the limit groove matched with the T-shaped vertical pipe, the front wheel realizes folding steering, the front arm limit pin rotates to the other side of the limit groove, the front wheel is just folded to the set position under the main beam frame, at the moment, only the front wheel folding quick-release handle, the front wheel is folded back under the main beam frame and aligned with and secured to the folded rear wheel.

When the folded bicycle needs to be unfolded, the manual pull rod is pulled in the communication hole, so that the folding positioning lock rod connected with the manual pull rod is separated from the lock hole, the folding positioning arm is pulled, the folding positioning arm is separated from the anti-rotation positioning hole, the rotary hollow rod rotates in the hollow connecting sleeve rod, at the moment, the seat vertical pipe connected with the rotary hollow rod and the rotary base connected with the hollow connecting sleeve rod rotate towards the backward unfolding state direction, when the seat vertical pipe rotates to the set position, the rear wheel folding quick-release handle is rotated to enable the lock block to be matched with the lock block seat to be aligned with the buckling lock, then the rear wheel folding quick-release handle is rotated to be pressed downwards and locked towards the set position, when the rear wheel folding quick-release handle is pressed downwards, the round head movable buckle automatically slides to the set position of the rear wheel folding quick-release handle under the pressure of the rear wheel folding quick-release handle and is inserted into, thus, the unfolding of the rear wheel of the bicycle is completed, when the rear wheel is unfolded, the folding quick-release handle of the front wheel is broken off, under the action of the spring, the movable lock pin on the movable cover is separated from the folding lock catch groove of the front wheel on the hollow rotating shaft of the front arm, but the convex lock of the movable cover is still clamped on the sliding positioning groove of the T-shaped vertical pipe at the lower end of the bowl group, because the movable lock pin is separated from the folding lock catch groove of the front wheel on the hollow rotating shaft of the front arm, at the moment, the front arm is rotated, the front arm drives the front arm limit pin to rotate in the limit groove, the front wheel returns to the unfolded position and rotates in place, the movable lock pin on the movable cover and the lock catch groove on the hollow rotating shaft of the front arm are aligned and wait to be matched in a setting, at the moment, the folding quick-release handle of the front wheel is pressed to pull, the locking anti-loosening buckle of the handle is also in contraposition locking with the anti-loosening lock catch hole of the front arm, so that the handle is prevented from being rebounded and loosened, and the front wheel is unfolded and fixed.

The utility model discloses in, can also be provided with the battery in the girder structure, be provided with wheel hub driving motor on the rear wheel, wherein, all can set up on the up end of girder structure or the lower terminal surface and dismantle the lid, make things convenient for the change of battery, when the electric energy of battery transmitted wheel hub driving motor, wheel hub driving motor drove the rear wheel and rotates.

The utility model discloses in, through front wheel beta structure and rear wheel beta structure's setting, when needs are folding, can accomodate in the girder structure bottom after the front wheel and the rear wheel of bicycle are folding simultaneously, because align each other between front wheel and the rear wheel and overlap, overlap the front wheel and the rear wheel of alignment after folding like this, both reasonable space of utilizing the girder structure below, also because the mode that overlaps and align sets up front wheel and rear wheel side by side, the whole volume of folding back bicycle has been reduced, also can be used for after folding, the front and rear wheel set up side by side and drag the line and carry out the line the utility model discloses in, the girder structure is circular-arcly, with the radian phase-match of folding front wheel and rear wheel, such design, can be better be used for accomodating the bicycle wheel, the effectual shared space after the folding back of reducing bicycle, be convenient for people's daily deposit and trip.

In the drawings, the positional relationship is described for illustrative purposes only and is not to be construed as limiting the present patent; it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (15)

1. An electric folding bicycle comprises a main beam frame, a handlebar, a front wheel, a rear wheel and a seat vertical tube connected with a seat, and is characterized by further comprising a front wheel folding structure and a rear wheel folding structure;

the handlebar is arranged at the front end of the main beam frame;

the seat vertical pipe is arranged at the joint of the main beam frame and the rear wheel folding structure;

the front wheel passes through the rotatable setting of front wheel beta structure at girder structure front end bottom, and the rear wheel passes through the rotatable setting of rear wheel beta structure at the girder structure end, accomodate in girder structure bottom after front wheel and rear wheel are folded to accomplish, aligns each other between front wheel and the rear wheel and overlaps.

2. The electric folding bicycle as claimed in claim 1, wherein the front wheel folding structure comprises a front wheel folding quick-release handle, a bearing, a spring, a forearm hollow rotating shaft, a movable cover, a forearm connected with the forearm hollow rotating shaft and a bowl group lower end T-shaped stand pipe arranged at the front end of the main beam frame;

the forearm hollow rotating shaft is arranged in a T-shaped vertical pipe at the lower end of the bowl group through a bearing;

one end of the spring is sleeved at the tail end of the forearm hollow rotating shaft, and the other end of the spring is contacted with the inner side of the movable cover;

the movable cover is respectively provided with a convex latch and a movable lock pin;

a sliding positioning groove matched with the convex lock is arranged on the T-shaped vertical pipe at the lower end of the bowl group, and a lock catch groove clamped with the movable lock pin is arranged on the front arm hollow rotating shaft;

the inside activity of the hollow axis of rotation of forearm is equipped with the hasp pull rod, the folding quick detach handle one end of front wheel is connected with the hasp pull rod, and the pressfitting of the other end is in the forearm outside.

3. The electric folding bicycle of claim 2, further comprising a front arm limiting pin connected with the front arm, wherein a limiting groove is formed on the T-shaped vertical pipe at the lower end of the bowl group, and the front arm limiting pin is arranged in the limiting groove.

4. The electric folding bicycle of claim 2, characterized in that the locking anti-loose buckle is arranged on the front wheel folding quick-release handle.

5. The electric folding bicycle as claimed in claim 2, further comprising a front wheel steering limiting key arranged at the front end of the main beam frame, wherein the T-shaped vertical tube at the lower end of the bowl group is provided with a front wheel steering limiting groove, and the front wheel steering limiting key is movably clamped on the front wheel steering limiting groove.

6. The electric folding bicycle of claim 1, further comprising a handlebar quick release handle, wherein the handlebar is connected to the T-shaped stem at the lower end of the bowl group through the handlebar quick release handle.

7. The electric folding bicycle of claim 1, wherein the rear wheel folding structure comprises a rotating base, a folding positioning lock rod, a main beam frame connecting seat connected with a main beam frame, a seat stand pipe connecting rotating device arranged between the rotating base and the main beam frame connecting seat, and a rear wheel folding quick-release handle arranged on the seat stand pipe;

the rotating base is rotatably arranged at the bottom of the main beam frame connecting seat, the folding positioning lock rod is arranged on the main beam frame connecting seat, and the rotating seat vertical pipe is connected with the rotating device for positioning;

the main beam frame is respectively provided with a rear wheel folding quick-release handle resetting groove and a lock block seat, and the rear wheel folding quick-release handle is movably clamped on the lock block seat.

8. The electric folding bicycle of claim 7, wherein the seat riser connection rotation means includes a rotation shaft fixing mounting sleeve provided on the main beam connection seat and a rotation shaft provided on the rotation base;

the rotating shaft and the rotating shaft fixed mounting sleeve are respectively provided with a lock hole matched with the folding positioning lock rod;

the rotating shaft is sleeved in the rotating shaft fixing mounting sleeve on the main beam frame connecting seat.

9. The electric folding bicycle of claim 7, further comprising a manual pull rod and a fold positioning lock rod spring;

the bottom of the main beam frame connecting seat is provided with a connecting hole;

the folding positioning lock rod spring is arranged on the folding positioning lock rod, and the manual pull rod is connected with the folding positioning lock rod.

10. The electric folding bicycle of claim 7, further comprising a seat riser folding and positioning device disposed on the rotating base, wherein the seat riser is disposed at the intersection of the main beam frame and the rear wheel folding structure by the seat riser folding and positioning device.

11. The electric folding bicycle of claim 10, wherein the seat riser folding positioning device comprises a limit pin, a folding positioning arm, a return spring, a hollow connecting sleeve rod arranged on the seat riser and a rotary hollow rod arranged on the rotary base;

the hollow connecting sleeve rod is sleeved in the rotary hollow rod;

the hollow connecting sleeve rod is provided with a clamping groove, the limiting pin is arranged in the clamping groove, and the rotary hollow rod is provided with a limiting screw matched with the limiting pin;

the folding limiting key is arranged at the bottom of the seat vertical pipe, the folding positioning arm is sleeved on the folding limiting key through the reset spring, and when the seat vertical pipe rotates downwards and is folded in place, the folding positioning arm locks the hollow connecting sleeve rod and the rotary hollow rod.

12. The electric folding bicycle of claim 11, wherein the hollow connecting sleeve rod and the rotary hollow rod are provided with rotation-preventing positioning holes, and the rotation-preventing positioning holes are matched with the folding positioning arms in size.

13. The electric folding bicycle of claim 11, further comprising a locking piece connecting rod and a locking piece matched with the locking piece seat, wherein one end of the locking piece connecting rod is connected with the rear wheel folding quick-release handle, and the other end of the locking piece connecting rod is connected with the locking piece.

14. The electric folding bicycle of claim 7, further comprising a locking buckle matched with the reset groove of the rear wheel folding quick-release handle, wherein the rear wheel folding quick-release handle is provided with a locking hole, and the locking buckle is matched with the locking hole on the rear wheel folding quick-release handle.

15. The electric folding bicycle of claim 14, wherein the locking fastener comprises a round-head movable fastener, a torsion spring and a locking fixing seat;

one end of the round head movable buckle is slidably sleeved in the anti-loosening lock hole, and the other end of the round head movable buckle is connected with the anti-loosening fixed seat;

the torsion spring is wound between the round head movable buckle and the anti-loosening fixed seat to form a whole.

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