CN107444545B

CN107444545B - Electric bicycle

Info

Publication number: CN107444545B
Application number: CN201710719195.9A
Authority: CN
Inventors: 张华�; 邵国良
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-12-31
Filing date: 2017-08-21
Publication date: 2022-11-04
Anticipated expiration: 2037-08-21
Also published as: CN107472441A; CN107472441B; CN107444545A; CN207374580U; CN107444546A; CN207374581U; CN107444546B; CN207360490U

Abstract

The invention provides an electric bicycle. It has solved current technical problem. This electric bicycle, including folding frame, be equipped with control circuit on folding frame, driving motor and at least one battery, folding frame front portion is equipped with at least one wheel, the rear portion is equipped with at least one wheel, folding frame includes the handle frame, the cushion support, wheel support and support frame, the handle frame rotates with the steering column to be connected, the steering column lower extreme links to each other with the wheel through turning to drive mechanism, the one end of cushion support articulates mutually with the middle part of handle frame and forms first pin joint, the lower extreme of handle frame articulates mutually with the one end of wheel support and forms the second pin joint, the one end of support frame articulates mutually with the middle part of cushion support and forms the third pin joint, the other end of support frame articulates mutually with the middle part of wheel support and forms the fourth pin joint, handle frame, the cushion support, be equipped with locking structure between at least two in wheel support and the support frame. The folding chair has the advantages of convenience in folding, good stability and the like.

Description

Electric bicycle

Technical Field

The invention belongs to the technical field of electric vehicles, and particularly relates to an electric bicycle.

Background

Along with the enhancement of the environmental awareness of people, people are increasingly demanding on electric bicycles, and after the breakthrough in the aspect of key technology and the performance of the electric bicycle are continuously improved, the electric bicycle becomes a substitute product of a motorcycle and a bicycle, and the electric bicycle is quick, environment-friendly, convenient and cheap, and simultaneously stimulates the appeal of the market to the electric bicycle. In order to make the carrying of electric motor car more convenient, so derived foldable electric scooter, current foldable electric scooter structure is complicated, and folding process is loaded down with trivial details, and frame structure is unstable when traveling. In order to solve the problems of the prior art, people have long searched for and put forward various solutions.

For example, chinese patent document discloses a quick folding structure of an electric car or a bicycle [ application No.: 201410326210.X ] includes preceding frame, saddle pipe, connecting plate, with the first leading connecting rod of connecting plate articulated, with the articulated back frame of connecting plate, its characterized in that: a self-locking connecting rod is arranged, the upper end of the self-locking connecting rod is hinged and linked with the rear end of the first front connecting rod, and the lower end of the self-locking connecting rod is hinged and linked with the front end of the rear frame; the hinge point of the first front connecting rod and the connecting plate is positioned at the front end of the connecting plate, the hinge point of the rear frame and the connecting plate is positioned at the lower end of the connecting plate, and the connecting line of the hinge point at the front end and the hinge point at the lower end is a motion critical line; when the hinge point at the upper end of the self-locking connecting rod moves to the rear side of the motion critical line, the folding structure is folded and locked; when the upper end hinge point of the self-locking connecting rod moves to the front side of the motion critical line, the folding structure is unlocked and unfolded.

The solution described above improves to some extent some of the problems of the prior art, but it also has at least the following drawbacks: the structure is complicated, the folding process is tedious, and the frame structure is unstable when traveling.

Disclosure of Invention

The invention aims to solve the problems and provides an electric bicycle which is simple in structure, convenient to fold and stable in frame structure during running.

In order to achieve the purpose, the invention adopts the following technical scheme: this electric bicycle, including folding frame, be equipped with control circuit, driving motor and at least one battery on folding frame, folding frame front portion be equipped with at least one wheel, the rear portion is equipped with at least one wheel, control circuit and driving motor and battery link to each other, driving motor and at least one wheel link to each other, folding frame include handle frame, cushion support, wheel support and support frame, handle frame rotate with the steering column and be connected and be equipped with the handle in the steering column upper end, steering column lower extreme link to each other with the wheel of locating folding frame front portion through turning to drive mechanism, the middle part of one end and the handle frame of cushion support articulated mutually and form first pin joint, the one end of handle frame articulated mutually and form the second pin joint with the one end of wheel support, the middle part of one end and the cushion support articulated mutually and form the third pin joint, the other end of support frame articulated mutually and form the fourth pin joint with the middle part of wheel support, first pin joint, second pin joint, third pin joint and fourth pin joint be four summits respectively four summits, the handle frame is equipped with at least two structures between the handle frame and the cushion support frame.

The electric vehicle operates the steering transmission mechanism to realize the steering of the wheels through the rotation of the handle and the steering column, the first hinge point, the second hinge point, the third hinge point and the fourth hinge point form a parallelogram, and the locking structure can lock two adjacent hinge points in the four hinge points, so that the positions of the handle frame, the cushion support, the wheel support and the support frame are locked when the electric vehicle runs, and the structural stability of the electric vehicle runs is ensured; when folding, locking structure loosens, and each pin joint homoenergetic free rotation to this folding, folding convenience of frame are realized.

In the electric bicycle, the wheel support comprises a front wheel support and a rear wheel support, at least one wheel is arranged at the front end of the front wheel support, at least one wheel is arranged at the rear end of the rear wheel support, one end of the front wheel support is hinged with the handle frame, the other end of the front wheel support is hinged with the front end of the rear wheel support, and a one-way bending limiting structure is arranged between the front wheel support and the rear wheel support; the total number of the wheels is not less than three, and when the folding frame is folded from the rear part to the front part, at least three wheels are gathered and the contact points of all the gathered wheels are positioned on the same plane to form standing support.

In the electric bicycle, the one-way bending limiting structure comprises abutting faces which are respectively arranged on the front wheel support and the rear wheel support and can be mutually matched when the front wheel support and the rear wheel support are positioned on the same straight line, and the hinged point of the front wheel support and the rear wheel support is positioned at the lower side of the joint of the front wheel support and the rear wheel support.

In foretell electric bicycle, the support frame lower extreme crotch portion has, crotch portion include first foot and second foot, first foot and front wheel support articulated mutually, second foot lower extreme locking groove that has opening down, the rear wheel support on be equipped with the locking round pin, and when front wheel support and rear wheel support were located same straight line the locking round pin get into in the locking groove.

In foretell electric bicycle, the locking structure including set up at least a lockplate on the wheel support and set up at least one locking pulling pin on the handle frame, lockplate and locking pulling pin one-to-one set up, the locking pulling pin include the round pin post and articulate the cam lock handle on the round pin post, the lockplate on be equipped with the confession the fore shaft that the round pin post passed in and out, after round pin post entering fore shaft and cam lock handle rotated the lockplate be fixed in on the handle frame by the locking pulling pin.

In foretell electric bicycle, the locking structure still include the safety pin, the handle frame on set firmly at least one first locating plate, be equipped with the pinhole on first locating plate, the wheel support on set firmly at least one second locating plate, be equipped with the confession on the second locating plate the location breach of safety pin business turn over, the safety pin wear to locate in the pinhole, be equipped with the locking knob respectively at the both ends of safety pin, get into location breach and locking knob and rotate the back when the safety pin the locking knob with first locating plate and second locating plate locking.

In the electric bicycle, a buffer mechanism which buffers along the axial direction of the support frame is arranged between the support frame and the cushion support or on the support frame; the buffer mechanism comprises a first buffer body and a second buffer body which are movably connected in the axial direction, the first buffer body is connected with the cushion bracket, the second buffer body is connected with the support frame, a spring is arranged between the first buffer body and the second buffer body, one end of the spring acts on the first buffer body, and the other end of the spring acts on the second buffer body; the first buffer body is hinged with the cushion support, the second buffer body is hinged with the support frame, and the hinge point of the second buffer body and the support frame is the third hinge point.

In foretell electric bicycle, wheel support front end both sides be fixed with the suspension respectively, be equipped with a swizzle on each suspension respectively, on each swizzle respectively the rotation of circumference be connected with the swing arm that turns to of mountable wheel, the swing arm that turns to on have the wheel installation department, the axis of wheel installation department transversely extend the setting, the axis of swizzle set up by supreme below to electric bicycle direction of advance slope, just the axis of wheel installation department subaerial projection lie in the axis of swizzle subaerial projection rear.

In the above electric bicycle, the steering transmission mechanism includes two steering rods and a steering stabilizer bar that can elastically stretch out and draw back in the axial direction, one end of one steering rod is movably connected with the rear portion of one steering swing arm, the other end is movably connected with the steering column, one end of the other steering rod is movably connected with the rear portion of the other steering swing arm, the other end is movably connected with the steering column, two ends of the steering stabilizer bar are respectively movably connected with the front portions of the two steering swing arms, and the central axis of each wheel mounting portion is located between the steering rod and the steering stabilizer bar.

In the electric bicycle, the steering stabilizer bar comprises a middle rod arranged in the middle, two ends of the middle rod are respectively provided with a connecting rod, the middle rod is respectively and movably connected with each connecting rod in the axial direction, an elastic body is respectively arranged between the middle rod and each connecting rod, one end of each elastic body acts on the middle rod, and the other end of each elastic body acts on the connecting rod; the elastic body is any one of a spring and an elastic piece made of elastic materials.

In the electric bicycle, the steering transmission mechanism further comprises a steering seat fixedly connected to the lower end of the steering column, the lower end of the steering column is fixedly connected with the front end of the steering seat, a transmission seat is arranged below the steering seat, the rear end of the transmission seat is rotatably connected with the rear end of the steering seat, and the inner ends of the two steering pull rods are respectively connected with two sides of the front end of the transmission seat; the rear end of the steering seat is positioned between the two limiting columns fixed on the transmission seat, and the rotating connection position of the steering seat and the transmission seat is positioned behind the two limiting columns.

In foretell electric bicycle, the battery be the column, folding chassis on be equipped with the battery mounting structure who is used for fixed battery, battery mounting structure include that at least one installation presss from both sides, every installation presss from both sides respectively including first arm lock and the second arm lock that opposities mutually, first arm lock and second arm lock between form the accommodation space that can hold the battery, first arm lock and second arm lock outer end between form the opening, be equipped with the receipts mouth strip between the free end of first arm lock and second arm lock.

In foretell electric bicycle, the outer end of first arm lock be equipped with first joint portion, the outer end of second arm lock be equipped with second joint portion, the binding off strip on be equipped with axial extension's draw-in groove, the notch size of draw-in groove be less than the inslot size of draw-in groove, first joint portion and second joint portion all get into the draw-in groove from the one end of draw-in groove in, and the outer end of first arm lock and the outer end of second arm lock all are located the notch of draw-in groove.

In the electric bicycle, a leading-in closing structure is arranged between the clamping groove and the first clamping part and between the clamping groove and the second clamping part; the leading-in closing structure comprises two guide walls which are arranged on the groove wall of the clamping groove and are obliquely arranged, and the guide walls are oblique from one end of the clamping groove to the direction of the central axis of the clamping groove.

Compared with the prior art, the electric bicycle has the advantages that: 1. the structure is simple, and the locking structure is adopted, so that the folding is convenient, and the frame structure is stable during running; 2. after being folded, the vertical support can be realized, the occupied area is small, and the storage is convenient; 3. the steering stabilizer bar is arranged, so that the steering of the wheels can be assisted, the steering of the wheels is more accurate, the aligning speed is high, and the steering is more stable; 4. the main pin inclines forwards, and the steering support performance is better.

Drawings

FIG. 1 is a schematic view of the structure provided by the present invention;

FIG. 2 is an enlarged view of the locking structure provided by the present invention;

FIG. 3 is a cross-sectional view of the structure provided by the present invention;

FIG. 4 is an enlarged view of the cushioning mechanism provided by the present invention;

FIG. 5 is a schematic view of the fold provided by the present invention;

FIG. 6 is a schematic illustration of a kingpin side view provided by the present invention;

FIG. 7 is a schematic top view of a steering gear arrangement provided by the present invention;

FIG. 8 is an enlarged view of another perspective of the steering gear structure provided by the present invention;

fig. 9 is a schematic view of a battery mounting structure provided by the present invention;

FIG. 10 is a schematic view of the construction of the mounting clip provided by the present invention;

FIG. 11 is a schematic view of another perspective of the mounting clip provided by the present invention;

FIG. 12 is a cross-sectional view of a closure strip provided by the present invention;

FIG. 13 is a schematic illustration of the position between the kingpin and the wheel mounting portion provided by the present invention;

in the drawing, the foldable frame 1, the control circuit 2, the driving motor 3, the battery 4, the wheel 5, the handle frame 6, the cushion bracket 7, the wheel bracket 8, the support frame 9, the steering column 10, the handle 10a, the steering transmission mechanism 11, the first hinge point 12, the second hinge point 13, the third hinge point 14, the fourth hinge point 15, the locking structure 16, the front wheel bracket 17, the rear wheel bracket 18, the one-way bending limit structure 19, the abutting surface 20, the bifurcated portion 21, the first leg 22, the second leg 23, the locking groove 24, the locking pin 25, the locking plate 26, the locking pull pin 27, the pin column 28, the cam lock handle 29, the lock notch 30, the safety pin 31, the first positioning plate 32, the stabilizer bar 33, the second positioning plate 34, the positioning notch 35, the locking knob 36, the buffer mechanism 37, the first buffer body 38, the second buffer body 39, the spring 40, the suspension 41, the main pin 42, the steering swing arm 43, the wheel 44, the steering pull rod 45, the steering mounting portion 46, the middle connecting rod 47, the transmission rod 48, the transmission seat 49, the closing seat 49, the second buffer body 39, the clamping arm 53, the clamping structure 60, the clamping groove 62, the clamping structure 60, the clamping structure of the first clamping structure of the second clamping clip 60 and the clamping structure of the clamping arm 60.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-5, the electric bicycle comprises a folding frame 1, a control circuit 2, a driving motor 3 and at least one storage battery 4 are arranged on the folding frame 1, at least one wheel 5 is arranged at the front portion of the folding frame 1, at least one wheel 5 is arranged at the rear portion of the folding frame 1, the control circuit 2 is connected with the driving motor 3 and the storage battery 4, the driving motor 3 is connected with the at least one wheel 5, the folding frame 1 comprises a handle frame 6, a cushion support 7, a wheel support 8 and a support frame 9, the handle frame 6 is rotatably connected with a steering column 10, a handle 10a is arranged at the upper end of the steering column 10, the lower end of the steering column 10 is connected with the wheel 5 arranged at the front portion of the folding frame 1 through a steering transmission mechanism 11, one end of the cushion support 7 is hinged with the middle portion of the handle frame 6 to form a first hinge point 12, the lower end of the handle frame 6 is hinged with one end of the wheel support 8 to form a second hinge point 13, one end of the support frame 9 is hinged with the middle portion of the cushion support 7 to form a third hinge point 14, the other end of the support frame 9 is hinged with the middle portion of the wheel support frame 8 to form a fourth hinge point 15, the fourth hinge point 12, the second hinge point 13, at least four hinge point of the support frame 6 and four support frame are arranged between the four support frame 6, and four support frame structures are arranged between the four support frame 6, and four support frame 16.

The electric vehicle operates the steering transmission mechanism 11 through the rotation of the handle 10a and the steering column 10 to realize the steering of the wheels 5, wherein a first hinge point 12, a second hinge point 13, a third hinge point 14 and a fourth hinge point 15 form a parallelogram, and a locking structure 16 can lock two adjacent hinge points in the four hinge points, so that the positions of the handle frame 6, the cushion frame 7, the wheel frame 8 and the support frame 9 are locked during driving, and the structural stability during driving is ensured; when folding, locking structure 16 loosens, and each pin joint homoenergetic free rotation to this folding, folding convenience of frame is realized.

In this embodiment, the wheel support 8 comprises a front wheel support 17 and a rear wheel support 18, at least one wheel 5 is arranged at the front end of the front wheel support 17, at least one wheel 5 is arranged at the rear end of the rear wheel support 18, one end of the front wheel support 17 is hinged to the handle frame 6, the other end of the front wheel support 17 is hinged to the front end of the rear wheel support 18, and a one-way bending limiting structure 19 is arranged between the front wheel support 17 and the rear wheel support 18; the front wheel support 17 is hinged to the rear wheel support 18, the length of the folded wheel support 8 can be further reduced, the total number of the wheels 5 is not less than three, after the folding frame 1 is folded from the rear part to the front part, at least three wheels 5 are gathered and the contact points of the gathered wheels 5 are positioned on the same plane to form standing support, after the folding frame 1 is folded, the at least three wheels 5 support the folding frame 1, the folded standing is realized, the occupied space is small, and the standing is more stable.

Further, one-way limit structure 19 that buckles including locating front wheel support 17 and rear wheel support 18 respectively and can coincide each other when front wheel support 17 and rear wheel support 18 are located the same straight line support face 20, the pin joint of front wheel support 17 and rear wheel support 18 is located the downside of front wheel support 17 and rear wheel support 18 junction, support face 20 here and can realize front wheel support 17, rear wheel support 18 is located both circumferential direction location when the same straight line, stability when guaranteeing to travel, and can play the effect of folding direction. The lower end of the support frame 9 is provided with a bifurcation part 21, the bifurcation part 21 comprises a first foot part 22 and a second foot part 23, the first foot part 22 is hinged with the front wheel bracket 17, the lower end of the second foot part 23 is provided with a locking groove 24 with a downward opening, the rear wheel bracket 18 is provided with a locking pin 25, the locking pin 25 enters the locking groove 24 when the front wheel bracket 17 and the rear wheel bracket 18 are positioned on the same straight line, and the locking groove 24 is abutted against the locking pin 25 when the frame is unfolded, so that the support frame 9 is positioned; when folded, the locking structure 16 is released, the front wheel bracket 17 can rotate along the handle frame 6, the cushion bracket 7 is rotated to disengage the locking groove 24 from the locking pin 25, and then the front wheel bracket 17 and the rear wheel bracket 18 are rotated to be folded, respectively.

Specifically, the locking structure 16 includes at least one locking plate 26 disposed on the wheel bracket 8 and at least one locking pull pin 27 disposed on the handle frame 6, the locking plate 26 and the locking pull pin 27 are disposed in a one-to-one correspondence, the locking pull pin 27 includes a pin 28 and a cam lock handle 29 hinged on the pin 28, a lock notch 30 for the pin 28 to pass in and out is disposed on the locking plate 26, when the pin 28 enters the lock notch 30 and the cam lock handle 29 rotates, the locking plate 26 is fixed on the handle frame 6 by the locking pull pin 27, and when the wheel bracket is folded, the cam lock handle 29 is rotated, an acting force between the locking plate 26 and the locking pull pin 27 is reduced, and at this time, the lock notch 30 can be separated from the pin 28 after the wheel bracket 8 rotates, so as to realize the rotational folding of the wheel bracket 8.

The locking structure 16 further comprises a safety pin 31, at least one first positioning plate 32 is fixedly arranged on the handle frame 6, a pin hole 33 is formed in the first positioning plate 32, at least one second positioning plate 34 is fixedly arranged on the wheel support 8, a positioning notch 35 for the safety pin 31 to go in and out is formed in the second positioning plate 34, the safety pin 31 penetrates through the pin hole 33, locking knobs 36 are respectively arranged at two ends of the safety pin 31, when the safety pin 31 enters the positioning notch 35 and the locking knob 36 rotates, the locking knob 36 locks the first positioning plate 32 and the second positioning plate 34, the locking knob 36 rotates on the safety pin 31 to perform axial displacement so as to clamp the first positioning plate 32 and the second positioning plate 34 tightly, locking of positioning after the wheel support 8 and the handle frame 6 are unfolded is achieved, and stability of the structure in a driving state is further improved.

Furthermore, a buffer mechanism 37 which buffers along the axial direction of the support frame 9 is arranged between the support frame 9 and the cushion support 7 or on the support frame 9; the buffer mechanism 37 comprises a first buffer body 38 and a second buffer body 39 which are movably connected in the axial direction, the first buffer body 38 is connected with the seat cushion support 7, the second buffer body 39 is connected with the support frame 9, a spring 40 is arranged between the first buffer body 38 and the second buffer body 39, one end of the spring 40 acts on the first buffer body 38, and the other end of the spring 40 acts on the second buffer body 39; first buffer 38 and second buffer 39 cup joint each other, and first buffer 38 is articulated mutually with cushion support 7, and second buffer 39 is articulated mutually with support frame 9, and the pin joint of second buffer 39 and support frame 9 is promptly third pin joint 14, and first buffer 38 and second buffer 39 here activity relatively cup joints, and when spring 40 compressed, the degree of depth that both cup jointed increases, and when spring 40 reset, the degree of depth that both cup jointed reduces to realize the buffering, and first buffer 38 articulates mutually with cushion support 7 and can make support frame 9 turn over to be parallel with handle frame 6, further reduces folding size.

As shown in fig. 6-8 and 13, the front ends of the wheel brackets 8 are respectively fixed with a suspension 41, each suspension 41 is respectively provided with a main pin 42, each main pin 42 is respectively connected with a steering swing arm 43 capable of mounting the wheel 5 in a circumferential rotation manner, the central axis of the main pin 42 is arranged from bottom to top in an inclined manner towards the advancing direction of the electric bicycle, the steering swing arm 43 is provided with a wheel mounting part 44, the central axis of the wheel mounting part 44 is transversely extended, the central axis of the main pin 42 is arranged in an inclined manner towards the advancing direction of the electric bicycle from bottom to top, and the projection of the central axis of the wheel mounting part 44 on the ground is positioned behind the projection of the central axis of the main pin 42 on the ground, so that the main pin 42 tilts forwards, the main pin 42 can enable the vehicle body to incline inwards during turning, thereby counteracting the centrifugal force formed during turning of the electric bicycle, and finally enabling the vehicle to turn more safely and rapidly, meanwhile, the wheels 5 are arranged behind the main pin 42, when the electric bicycle is turning, the vehicle can automatically deflect towards the inner side of a curve in the projection area of the electric bicycle, thereby enabling the center of gravity of a person to be positioned in the front wheel and further improving the running stability.

The steering transmission mechanism 11 includes two steering rods 45 and a steering stabilizer 46 capable of elastically stretching in the axial direction, one end of one steering rod 45 is movably connected to the rear portion of one steering swing arm 43, the other end is movably connected to the steering column 10, one end of the other steering rod 45 is movably connected to the rear portion of the other steering swing arm 43, the other end is movably connected to the steering column 10, two ends of the steering stabilizer 46 are respectively movably connected to the front portions of the two steering swing arms 43, the central axis of each wheel mounting portion 44 is located between the steering rod 45 and the steering stabilizer 46, the steering rod 45 is driven to axially move by the rotation of the steering column 10 during steering, and the steering swing arm 43 is pushed to deviate so as to realize the steering of the wheel 5, because the steering stabilizer 46 is an axially elastic telescopic rod, the steering stabilizer can play a role in damping and guiding during the steering of the vehicle, and assist the steering stabilizer 5 to steer the wheel 5, in particular, the steering stabilizer 46 can play a role in damping during steering, the stability during steering is ensured, and the occurrence of steering deviation is prevented, and in addition, the steering stabilizer 46 can play a role in assisting the steering of the wheel 5 in the return of the steering.

The steering stabilizer 46 comprises a middle rod 47 arranged in the middle, two ends of the middle rod 47 are respectively provided with a connecting rod 48, the middle rod 47 is respectively axially and movably connected with each connecting rod 48, an elastic body is respectively arranged between the middle rod 47 and each connecting rod 48, one end of each elastic body acts on the middle rod 47, and the other end of each elastic body acts on the connecting rod 48; the elastic body is any one of a spring and an elastic member made of an elastic material, and the axial extension and contraction of the connecting ends of the connecting rods 48 and the intermediate rods 47 are realized through the elastic body, so that the assisting force can be provided when the wheel 5 keeps a positive direction, and the wheel 5 is prevented from being steered when passing through a bumpy road surface.

Furthermore, the steering transmission mechanism 11 further comprises a steering seat 49 fixedly connected to the lower end of the steering column 10, the lower end of the steering column 10 is fixedly connected with the front end of the steering seat 49, a transmission seat 50 is arranged below the steering seat 49, the rear end of the transmission seat 50 is rotatably connected with the rear end of the steering seat 49, and the inner ends of the two steering pull rods 45 are respectively connected with the two sides of the front end of the transmission seat 50; the rear end of the steering seat 49 is located between the two limiting posts 53 fixed on the transmission seat 50, the rotating connection position of the steering seat 49 and the transmission seat 50 is located behind the two limiting posts 53, the steering column 10 drives the steering seat 49 to rotate, and after the steering column 10 rotates, the rear end of the steering seat 49 can be reversely deviated, and the steering seat 49 pushes the transmission seat 50 to enable the steering pull rod 45 to generate axial displacement, so that the deviation of the wheels 5 is realized. The front end of the steering seat 49 is provided with an arc-shaped groove 51, the front end of the transmission seat 50 is fixed with a sliding pin 52, the sliding pin 52 penetrates through the arc-shaped groove 51 and can slide along the arc-shaped groove 51, the sliding pin 52 is fixedly connected with the transmission seat 50, therefore, the arc-shaped groove 51 is in arc-shaped deviation along the sliding pin 52 during steering, and the arc-shaped groove 51 and the limiting column 53 can also play a role in steering limiting.

As shown in fig. 9-12, the storage battery 4 is in a column shape, a battery mounting structure 54 for fixing the storage battery 4 is arranged on the folding frame 1, the battery mounting structure 54 includes at least one mounting clip 55, each mounting clip 55 includes a first clip arm 56 and a second clip arm 57 which are opposite to each other, an accommodating space 58 for accommodating the storage battery 4 is formed between the first clip arm 56 and the second clip arm 57, an opening 59 is formed between outer ends of the first clip arm 56 and the second clip arm 57, a receiving strip 60 is arranged between outer ends of the first clip arm 56 and the second clip arm 57, when the storage battery 4 is mounted, the storage battery 4 is placed into the accommodating space 58 formed by the first clip arm 56 and the second clip arm 57, circumferential wrapping and clamping of the storage battery 4 is realized by the first clip arm 56 and the second clip arm 57, and then the first clip arm 56 and the second clip arm 57 are clamped by the receiving strip 60 to prevent the opening from being unfolded, so as to realize mounting of the storage battery 4; when battery 4 during the dismantlement, take out the first arm lock 56 and the second arm lock 57 of closing up strip 60 back and loosen promptly, improved the convenience of battery 4 dismouting to closing up strip 60 can improve the stability of centre gripping.

First clamp arm 56's outer end is equipped with first joint portion 61, second clamp arm 57's outer end is equipped with second joint portion 62, close up and be equipped with axially extended draw-in groove 63 on the strip 60, draw-in groove 63's notch size is less than draw-in groove 63's inslot size, first joint portion 61 and second joint portion 62 all get into in draw-in groove 63 from the one end of draw-in groove 63, and first clamp arm 56's outer end and second clamp arm 57's outer end all are located draw-in groove 63's notch, when pressing from both sides tightly, first joint portion 61 and second joint portion 62 all are located draw-in groove 63 inslot, and first joint portion 61 and second joint portion 62 lateral part all support and lean on in draw-in groove 63 inner wall, because draw-in groove 63's notch size is less than draw-in groove 63's inslot size consequently can prevent when the centre gripping first joint portion 61 and second joint portion 62 break away from draw-in groove 63.

A leading-in closing structure is arranged between the clamping groove 63 and the first clamping portion 61 and the second clamping portion 62; the leading-in closing structure includes two guide walls 64 that locate on the cell wall of draw-in groove 63 and slope and set up, and guide wall 64 slopes to draw-in groove 63 axis direction from draw-in groove 63 one end, and the guide effect when not only can playing installation closing strip 60 to closing strip 60 axial breaks away from first joint portion 61 and second joint portion 62 when can preventing to press from both sides tightly.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the folding frame 1, the control circuit 2, the driving motor 3, the battery 4, the wheel 5, the handle frame 6, the cushion bracket 7, the wheel bracket 8, the support bracket 9, the steering column 10, the handle 10a, the steering transmission mechanism 11, the first hinge point 12, the second hinge point 13, the third hinge point 14, the fourth hinge point 15, the locking structure 16, the front wheel bracket 17, the rear wheel bracket 18, the one-way bend limiting structure 19, the abutment surface 20, the crotch 21, the first leg 22, the second leg 23, the locking groove 24, the locking pin 25, 26, the locking pull pin 27, the pin column 28, the cam lock handle 29, the lock notch 30, the safety pin 31, the first positioning plate 32, the pin hole 33, the second positioning plate 34, the positioning notch 35, the locking knob 36, the buffer mechanism 37, the first buffer body 38, the second buffer body 39, the spring 40, the suspension 41, the main pin 42, the steering swing arm 43, the wheel 44, the steering pull rod 45, the steering link 46, the intermediate rod 48, the steering rod 47, the steering transmission mechanism 48, the first buffer body 38, the second buffer body 39, the spring 40, the suspension 41, the bracket 52, the clamping groove 52, the clamping arm 53, the clamping arm 55, the clamping groove 52, the clamping arm 55, and the clamping structure are used more frequently, and the like, and the possibility is eliminated. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to the spirit of the present invention.

Claims

1. An electric bicycle comprises a folding frame (1), a control circuit (2), a driving motor (3) and at least one storage battery (4) are arranged on the folding frame (1), at least one wheel (5) is arranged at the front part of the folding frame (1), at least one wheel (5) is arranged at the rear part of the folding frame (1), the control circuit (2) is connected with the driving motor (3) and the storage battery (4), the driving motor (3) is connected with at least one wheel (5), the electric bicycle is characterized in that the folding frame (1) comprises a handle frame (6), a cushion support (7), a wheel support (8) and a support frame (9), the handle frame (6) is rotatably connected with a steering column (10) and a handle (10 a) is arranged at the upper end of the steering column (10), the lower end of the steering column (10) is connected with the wheel (5) arranged at the front part of the folding frame (1) through a steering transmission mechanism (11), one end of the cushion support (7) is hinged with the middle part of the handle frame (6) to form a first hinge point (12), the lower end of the handle frame (6) is hinged with the second hinge point (8) and the second hinge point (14) of the support frame is formed with a third hinge point (14), the other end of the support frame (9) is hinged with the middle part of the wheel support (8) to form a fourth hinge point (15), the first hinge point (12), the second hinge point (13), the third hinge point (14) and the fourth hinge point (15) are four vertexes of a quadrangle respectively, and a locking structure (16) is arranged between at least two of the handle frame (6), the cushion support (7), the wheel support (8) and the support frame (9);

the wheel support (8) comprises a front wheel support (17) and a rear wheel support (18), at least one wheel (5) is arranged at the front end of the front wheel support (17), at least one wheel (5) is arranged at the rear end of the rear wheel support (18), one end of the front wheel support (17) is hinged with the handle frame (6), the other end of the front wheel support (17) is hinged with the front end of the rear wheel support (18), and a one-way bending limiting structure (19) is arranged between the front wheel support (17) and the rear wheel support (18); the total number of the wheels (5) is not less than three, and when the folding frame (1) is folded from the rear part to the front part, at least three wheels (5) are gathered and the contact points of the gathered wheels (5) are all positioned on the same plane to form standing support;

the locking structure (16) comprises at least one locking plate (26) arranged on the wheel support (8) and at least one locking pull pin (27) arranged on the handle frame (6), the locking plate (26) and the locking pull pin (27) are arranged in a one-to-one correspondence manner, the locking pull pin (27) comprises a pin column (28) and a cam lock handle (29) hinged on the pin column (28), a lock opening (30) for the pin column (28) to enter and exit is formed in the locking plate (26), and after the pin column (28) enters the lock opening (30) and the cam lock handle (29) rotates, the locking plate (26) is fixed on the handle frame (6) by the locking pull pin (27);

the one-way bending limiting structure (19) comprises abutting surfaces (20) which are respectively arranged on the front wheel support (17) and the rear wheel support (18) and can be mutually inosculated when the front wheel support (17) and the rear wheel support (18) are positioned on the same straight line, and the hinge point of the front wheel support (17) and the rear wheel support (18) is positioned at the lower side of the joint of the front wheel support (17) and the rear wheel support (18);

support frame (9) lower extreme branch fork portion (21) have, branch fork portion (21) including first foot (22) and second foot (23), first foot (22) articulated mutually with front wheel support (17), second foot (23) lower extreme locking groove (24) that open side down have, rear wheel support (18) on be equipped with locking round pin (25), and when front wheel support (17) and rear wheel support (18) are located same straight line locking round pin (25) get into in locking groove (24).

2. The electric bicycle according to claim 1, wherein the locking structure (16) further comprises a safety pin (31), at least one first positioning plate (32) is fixedly arranged on the handlebar frame (6), a pin hole (33) is formed in the first positioning plate (32), at least one second positioning plate (34) is fixedly arranged on the wheel support (8), a positioning notch (35) for the safety pin (31) to enter and exit is formed in the second positioning plate (34), the safety pin (31) is arranged in the pin hole (33) in a penetrating manner, locking knobs (36) are respectively arranged at two ends of the safety pin (31), and when the safety pin (31) enters the positioning notch (35) and the locking knobs (36) rotate, the locking knobs (36) lock the first positioning plate (32) and the second positioning plate (34).

3. The electric bicycle as claimed in claim 1 or 2, characterized in that a buffer mechanism (37) for buffering along the axial direction of the support frame (9) is arranged between the support frame (9) and the cushion bracket (7) or on the support frame (9); the buffer mechanism (37) comprises a first buffer body (38) and a second buffer body (39) which are movably connected in the axial direction, the first buffer body (38) is connected with the cushion support (7), the second buffer body (39) is connected with the support frame (9), a spring (40) is arranged between the first buffer body (38) and the second buffer body (39), one end of the spring (40) acts on the first buffer body (38), and the other end of the spring (40) acts on the second buffer body (39); the first buffer body (38) and the second buffer body (39) are sleeved with each other, the first buffer body (38) is hinged to the seat cushion support (7), the second buffer body (39) is hinged to the support frame (9), and the hinge point of the second buffer body (39) and the support frame (9) is the third hinge point (14).

4. The electric bicycle according to claim 1 or 2, characterized in that the front end of the wheel support (8) is fixed with a suspension (41) on each side, each suspension (41) is provided with a kingpin (42), each kingpin (42) is connected with a steering swing arm (43) capable of mounting a wheel (5) in a circumferential rotation manner, the steering swing arm (43) is provided with a wheel mounting part (44), the central axis of the wheel mounting part (44) extends transversely, the central axis of the kingpin (42) is inclined from bottom to top in the advancing direction of the electric bicycle, and the projection of the central axis of the wheel mounting part (44) on the ground is located behind the projection of the central axis of the kingpin (42) on the ground.

5. The electric bicycle according to claim 4, wherein the steering transmission mechanism (11) comprises two steering rods (45) and a steering stabilizer bar (46) which can elastically stretch and retract in the axial direction, one end of one steering rod (45) is movably connected with the rear part of one steering swing arm (43), the other end of the one steering rod is movably connected with the steering column (10), one end of the other steering rod (45) is movably connected with the rear part of the other steering swing arm (43), the other end of the other steering rod is movably connected with the steering column (10), two ends of the steering stabilizer bar (46) are respectively movably connected with the front parts of the two steering swing arms (43), and the central axis of each wheel mounting part (44) is positioned between the steering rod (45) and the steering stabilizer bar (46).

6. The electric bicycle according to claim 5, wherein the steering stabilizer bar (46) comprises a middle rod (47) arranged in the middle, two connecting rods (48) are respectively arranged at two ends of the middle rod (47), the middle rod (47) is respectively and axially movably connected with each connecting rod (48), an elastic body is respectively arranged between the middle rod (47) and each connecting rod (48), one end of the elastic body acts on the middle rod (47), and the other end acts on the connecting rods (48); the elastic body is any one of a spring and an elastic piece made of elastic materials.

7. The electric bicycle according to claim 5, characterized in that the steering transmission mechanism (11) further comprises a steering seat (49) fixedly connected to the lower end of the steering column (10), the lower end of the steering column (10) is fixedly connected to the front end of the steering seat (49), a transmission seat (50) is arranged below the steering seat (49), the rear end of the transmission seat (50) is rotatably connected to the rear end of the steering seat (49), and the inner ends of the two steering pull rods (45) are respectively connected to two sides of the front end of the transmission seat (50); the rear end of the steering seat (49) is positioned between two limiting posts (53) fixed on the transmission seat (50), and the rotating connection part of the steering seat (49) and the transmission seat (50) is positioned behind the two limiting posts (53).

8. The electric bicycle according to claim 1 or 2, characterized in that the battery (4) is cylindrical, a battery mounting structure (54) for fixing the battery (4) is arranged on the folding frame (1), the battery mounting structure (54) comprises at least one mounting clip (55), each mounting clip (55) comprises a first clamping arm (56) and a second clamping arm (57) which are opposite to each other, a receiving space (58) for receiving the battery (4) is formed between the first clamping arm (56) and the second clamping arm (57), an opening (59) is formed between outer ends of the first clamping arm (56) and the second clamping arm (57), and a closing strip (60) is arranged between outer ends of the first clamping arm (56) and the second clamping arm (57).

9. The electric bicycle according to claim 8, wherein the outer end of the first clamping arm (56) is provided with a first clamping portion (61), the outer end of the second clamping arm (57) is provided with a second clamping portion (62), the closing-up strip (60) is provided with a clamping groove (63) extending axially, the size of the notch of the clamping groove (63) is smaller than the size of the notch of the clamping groove (63), the first clamping portion (61) and the second clamping portion (62) enter the clamping groove (63) from one end of the clamping groove (63), and the outer end of the first clamping arm (56) and the outer end of the second clamping arm (57) are both located in the notch of the clamping groove (63).

10. The electric bicycle according to claim 9, characterized in that a leading-in closing structure is arranged between the clamping groove (63) and the first clamping portion (61) and the second clamping portion (62); the leading-in closing structure comprises two guide walls (64) which are arranged on the wall of the clamping groove (63) and are obliquely arranged, and the guide walls (64) are oblique from one end of the clamping groove (63) to the central axis direction of the clamping groove (63).