CN107097880B

CN107097880B - Scooter

Info

Publication number: CN107097880B
Application number: CN201710442700.XA
Authority: CN
Inventors: 李官德; 陈洪亮
Original assignee: Zhejiang Doohan Technology Co ltd
Current assignee: Zhejiang Doohan Technology Co ltd
Priority date: 2017-06-13
Filing date: 2017-06-13
Publication date: 2022-09-30
Anticipated expiration: 2037-06-13
Also published as: CN107097880A

Abstract

The invention discloses a scooter, which comprises a frame, a deflection and steering mechanism, a driving wheel and two front wheels, wherein the deflection and steering mechanism is arranged at the front end of the frame; the driving wheel is arranged at the rear part of the frame; the two front wheels and the driving wheel are damping tire mechanisms; a deflection angle limiting device I is arranged on the upper rocker arm or the lower rocker arm; a deflection locking mechanism is arranged between the frame and the upper rocker arm or the lower rocker arm; and a front steering column rotating angle limiting device is arranged between the front steering column sleeve and the connecting rod. The scooter has the advantages of simple integral structure, convenient manufacture, greatly reduced production cost and wide market prospect.

Description

Scooter

Technical Field

The invention relates to a vehicle, in particular to a scooter.

Background

In the existing reverse tricycle on the market, when a user drives, particularly turns or makes a sharp turn, the centrifugal force generated by the tricycle and the user easily causes the accident that people and vehicles overturn, and the use is unsafe. Therefore, the inventor has invented a reverse tricycle with patent publication No. CN 205239636U, which comprises a yaw and steering mechanism, a rear end frame, a driving wheel and two front wheels, wherein the yaw and steering mechanism comprises a main frame, a left forearm assembly and a right forearm assembly symmetrically arranged at two sides of the main frame, and a damping system is arranged between the left forearm assembly and the right forearm assembly. The reverse tricycle with the structure has a complex overall structure and high required manufacturing cost.

Disclosure of Invention

The invention aims to provide a scooter, which can solve the problems of insufficient safety and high manufacturing cost of the existing scooter in running.

In order to solve the technical problems, the technical solution of the scooter of the invention is as follows:

the steering device comprises a frame, a deflection and steering mechanism, a driving wheel and two front wheels, wherein the deflection and steering mechanism is arranged at the front end of the frame, the two front wheels are connected with the deflection and steering mechanism, and the two front wheels are symmetrically positioned on two sides of the frame by taking the frame as a center; the driving wheel is arranged at the rear part of the frame;

the deflection and steering mechanism comprises an upper rocker arm and a lower rocker arm, the upper rocker arm and the lower rocker arm are both of a profile one-step forming or punch forming structure, the centers of the upper rocker arm and the lower rocker arm are both hinged on the frame, two ends of the upper rocker arm are respectively connected with the upper parts of a left steering knuckle and a right steering knuckle through a first rod end joint bearing and a second rod end joint bearing, and two ends of the lower rocker arm are respectively connected with the lower parts of the left steering knuckle and the right steering knuckle through a third rod end joint bearing and a fourth rod end joint bearing;

the deflection and steering mechanism further comprises a steering structure, the steering structure comprises a front steering column sleeve fixed on the frame, the front steering column penetrates through the front steering column sleeve, a connecting rod extends from the side wall of the front steering column, the connecting rod is connected to a shaft seat of the universal steering mechanism, and the left end and the right end of the universal steering mechanism are respectively connected with a fifth rod end joint bearing arranged at the front end of the left steering knuckle and a sixth rod end joint bearing arranged at the front end of the right steering knuckle; the upper end of the front steering column is provided with a handlebar, and the front steering column is provided with a foldable structure;

the two front wheels are respectively arranged on the left steering knuckle and the right steering knuckle, the two front wheels are respectively connected with the left steering knuckle and the right steering knuckle through a fixing structure, the fixing structure comprises a wheel shaft fixedly connected with the center of the front wheel and provided with external threads, and a shaft hole arranged on the steering knuckle, a plurality of bearings are arranged in the shaft hole, the wheel shaft penetrates through the bearings and extends to the outer side of the other end of the steering knuckle, and finally nuts are screwed on the wheel shaft;

the front steering column rotation angle limiting device is arranged between the front steering column sleeve and the connecting rod and comprises a limiting piece fixed on the front steering column sleeve, an arc-shaped limiting hole is formed in the limiting piece, a limiting pin extends from the connecting rod, and the limiting pin penetrates through the arc-shaped limiting hole.

The upper rocker arm and the lower rocker arm are of an integrated structure, a deflection angle limiting device I is arranged on the upper rocker arm or the lower rocker arm, the deflection angle limiting device I comprises an arched limiting plate which is centered on a hinge point of the upper rocker arm or the lower rocker arm and the frame and stretches across two sides of the upper rocker arm or the lower rocker arm, the frame is located in the arched range of the limiting plate, and when the upper rocker arm or the lower rocker arm deflects to a limiting angle relative to the frame, the frame abuts against the arched inner wall of the limiting plate, so that the upper rocker arm or the lower rocker arm is limited from continuously expanding angle deflection relative to the frame; the two front wheels and the driving wheel are damping tire mechanisms; a deflection locking mechanism is arranged between the frame and the upper rocker arm or the lower rocker arm, the deflection locking mechanism comprises a movable spring bolt mechanism fixed on the frame, the movable spring bolt mechanism is matched with a limiting plate, and after the movable spring bolt mechanism is matched and locked with the limiting plate, the limiting plate and the frame are relatively fixed to finish parking; the universal steering mechanism comprises a left pull rod and a right pull rod which are coaxially distributed, the outer ends of the left pull rod and the right pull rod are respectively connected with a fifth rod end joint bearing and a sixth rod end joint bearing, and the inner ends of the left pull rod and the right pull rod are connected to a ninth rod end joint bearing; the ninth rod end joint bearing comprises a main body, a left connecting rod and a right connecting rod which are arranged on the main body and are just opposite to each other in distribution, and the left connecting rod and the right connecting rod are respectively connected and fixed with the left pull rod and the right pull rod.

The arched inner wall of the limiting plate is provided with a left limiting block and a right limiting block, and the left limiting block and the right limiting block are made of rubber or nylon materials and respectively correspond to the frame.

The damping tire mechanism comprises a wheel hub, the center of the wheel hub is fixedly connected with a wheel shaft, a spoke is arranged on the outer edge of the wheel hub, a rim is arranged outside the spoke, a tire body is arranged outside the rim, the tire body comprises a solid layer and a hollow damping layer arranged on the inner side of the solid layer, and the spoke is a plurality of spiral springs or rod springs which are uniformly distributed on the circumference.

The hollow shock absorption layer is a honeycomb structure layer, and the honeycomb structure layer comprises a plurality of regular hexagonal holes with axes parallel to the axis of the tire body.

The hollow shock absorption layer is a multi-circular-hole structural layer which comprises a plurality of circular holes with axes parallel to the axis of the tire body.

The first rod end joint bearing, the second rod end joint bearing, the third rod end joint bearing and the fourth rod end joint bearing are all consistent in structure and comprise bearing shells, a fixed rod is arranged on each bearing shell, and at least two through holes are formed in each fixed rod; the both ends of going up the rocking arm, the both ends of lower rocking arm are provided with the mounting groove respectively, and the dead lever is inserted and is established in the mounting groove, thereby the bolt passes mounting hole on the mounting groove, the through-hole of dead lever in proper order fixes the dead lever in the mounting groove.

The frame is also provided with a cushion folding and unfolding device, the cushion folding and unfolding device comprises a first support rod, a second support rod and a third support rod, one end of the first support rod is hinged on the frame, and the other end of the first support rod is connected with a cushion; one end of the second support rod is hinged with the first support seat on the first support rod, the other end of the second support rod is provided with a movable shaft and a clamping pin, the movable shaft is arranged in a long waist hole of the third support rod, the clamping pin can be matched and arranged in a clamping groove at one end of the third support rod, the other end of the third support rod is hinged on the second support seat, and the second support seat is fixed on the frame; when the clamping pin is matched in the clamping groove, the second support rod and the third support rod form a whole and are in a linear state, and the first support rod, the second support rod and the third support rod form a triangular support structure together; when the clamping pin leaves the clamping groove, the first supporting rod is foldable relative to the second supporting rod and the second supporting rod is foldable relative to the third supporting rod, so that the first supporting rod is turned downwards relative to the frame and is folded.

The upper rocker arm comprises a left upper rocker arm and a right upper rocker arm, the left upper rocker arm and the right upper rocker arm are respectively hinged with the frame through a first pivoting mechanism and a second pivoting mechanism, and the first pivoting mechanism and the second pivoting mechanism are coaxial; the lower rocker arm comprises a left lower rocker arm and a right lower rocker arm, the left lower rocker arm and the right lower rocker arm are respectively hinged with the frame through a third pivoting mechanism and a fourth pivoting mechanism, and the third pivoting mechanism and the fourth pivoting mechanism are coaxial; the front end and the rear end of the steering column sleeve are respectively provided with a front articulated shaft and a rear articulated shaft, the front articulated shaft and the rear articulated shaft are coaxial, the centers of a front inclined swing rod and a rear inclined swing rod are respectively articulated on the front articulated shaft and the rear articulated shaft, a first fixed shaft and a second fixed shaft are respectively connected between the end parts of the front inclined swing rod and the rear inclined swing rod which are positioned on the same side, the upper left rocker arm and the upper right rocker arm are respectively provided with a third fixed shaft and a fourth fixed shaft, the third fixed shaft corresponds to the first fixed shaft, the fourth fixed shaft corresponds to the second fixed shaft, the first fixed shaft and the second fixed shaft are respectively sleeved with a first shaft sleeve and a second shaft sleeve, and a shock absorber is respectively connected between the third shaft sleeve and the first shaft sleeve and between the fourth shaft sleeve and the second shaft sleeve; the universal steering mechanism comprises a left pull rod and a right pull rod, the outer ends of the left pull rod and the right pull rod are respectively connected with a fifth rod end joint bearing and a sixth rod end joint bearing, the inner ends of the left pull rod and the right pull rod are respectively connected with a seventh rod end joint bearing and an eighth rod end joint bearing, and a shaft seat is connected with a central hole of the seventh rod end joint bearing and a central hole of the eighth rod end joint bearing; the left pull rod and the right pull rod are arranged in a front-back manner or in an up-down manner.

A second deflection angle limiting device is arranged between the upper left rocker arm and the upper right rocker arm or between the lower left rocker arm and the lower right rocker arm, the second deflection angle limiting device comprises a left limiting plate and a right limiting plate, the left limiting plate and the right limiting plate are arranged at intervals, the inner walls of the left limiting plate and the right limiting plate are respectively provided with a left limiting block and a right limiting block, and the left limiting block and the right limiting block are respectively correspondingly matched with the abutting parts of the frame; the left limiting plate and the right limiting plate are provided with corresponding limiting holes, and limiting bolts arranged on the frame are matched with the corresponding limiting holes; when the scooter parks, spacing hole on left limiting plate and the right limiting plate is in just right the position, and spacing bolt can pass the spacing hole on left limiting plate and the right limiting plate simultaneously.

The invention can achieve the technical effects that:

the upper rocker arm and the lower rocker arm are both of a profile one-step forming or punch forming structure, so that the production cost is reduced, and the manufacturing and assembling processes are simplified;

the shock absorption function of the invention comes from a shock absorption tire mechanism, the inner layer of the tire body of the shock absorption tire mechanism adopts a honeycomb structure layer or a multi-circular-hole structure layer, and does not need to be inflated, thereby avoiding various problems brought by an inflated tire, providing deformation buffering capacity by depending on the tire body structure, having good shock absorption effect on a vehicle, eliminating the design of a shock absorber of the vehicle on a frame, reducing the production cost, and having the advantages of simple structure, light weight, maintenance-free property and the like;

the spoke of the invention is a spiral spring or a rod spring, when a vehicle runs on bump, the rim moves up and down relative to the hub and is in an eccentric state with the hub, the shape maintaining capability is provided by the elastic structure of the spoke, the deformation buffering capability is provided, and the spoke has good damping effect;

the first deflection angle limiting device is arranged between the left side and the right side of the upper rocker arm or the lower rocker arm, and ensures that a core mechanism of the scooter runs within a limit side inclination angle range, so that the service life of the scooter is prolonged, and the safe driving coefficient of a driver is improved;

the deflection locking mechanism replaces the traditional foot brace, and when the scooter parks, the movable lock tongue mechanism is matched with and locks the limiting plate, so that the limiting plate and the frame are relatively fixed, the deflection mechanism and the frame are in a locking state, the vehicle body and the ground are in a parking state at a certain angle, and the parking stability is improved;

according to the rod end joint bearing arranged at the two ends of the upper rocker arm and the lower rocker arm, the fixing rod of the rod end joint bearing can accurately find the assembly position through the assembly mode of the fixing rod on the rod end joint bearing and the mounting grooves at the two ends of the upper rocker arm and the lower rocker arm.

Drawings

The invention is described in further detail below with reference to the following figures and embodiments:

fig. 1 is a schematic perspective view of a scooter according to a first embodiment of the present invention;

FIG. 2 is an exploded perspective view of a first embodiment of the scooter of the present invention;

FIG. 3 is a perspective view of the scooter of the present invention with the front wheels removed;

FIG. 4 is a perspective view of the scooter of the present invention with the front wheel removed from the scooter at another angle;

FIG. 5 is a perspective view of a first yaw angle limiting device and a yaw locking mechanism of the scooter of the present invention;

FIG. 6 is an exploded perspective view of the scooter of the present invention between the front wheel and the knuckle;

FIG. 7 is a schematic view of a tire body structure having a honeycomb layer of the present invention;

FIG. 8 is a schematic view of a tire body structure having a multi-hole structural layer according to the present invention;

FIG. 9 is a schematic structural view of a shock absorbing tire mechanism with a coil spring spoke;

FIG. 10 is a schematic structural view of a damped tire mechanism of the present invention with spokes as rod springs;

FIG. 11 is a schematic view of the cushion retraction device of the present invention in a raised position;

figure 12 is a schematic view of the seat cushion retraction arrangement of the present invention in a lowered position;

FIG. 13 is an exploded perspective view of the yaw and steering mechanism of the present invention;

fig. 14 is a perspective view of a stopper plate of the present invention;

FIG. 15 is an angled perspective view of a second embodiment of the present invention;

FIG. 16 is a perspective view of another angle of a second embodiment of the present invention;

fig. 17 is an exploded perspective view of a second yaw angle limiting device of the present invention.

Detailed Description

As shown in fig. 1 to 4, the scooter of the present invention comprises a frame 1, a yaw and steering mechanism 2, a driving wheel 3 and two front wheels 4, wherein the yaw and steering mechanism 2 is arranged at the front end of the frame 1, the two front wheels 4 are connected with the yaw and steering mechanism 2, the two front wheels 4 are symmetrically arranged at two sides of the frame 1 by taking the frame 1 as the center, and the driving wheel 3 is arranged at the rear part of the frame 1; the two front wheels 4 are provided with brake systems, and a damping system is arranged between the rear wheel shaft and the frame 1; the two front wheels 4 and the driving wheel 3 are damping tire mechanisms; the frame 1 is also provided with a pedal 5;

the deflection and steering mechanism 2 comprises an upper rocker arm 6 and a lower rocker arm 7, the upper rocker arm 6 and the lower rocker arm 7 are aluminum alloy sections and are of one-step forming or punch forming structures, customized cutting is carried out according to actual use requirements, production cost is greatly reduced, meanwhile, the design structure is simplified, and the whole weight of the upper rocker arm 6 and the lower rocker arm 7 is reduced while bearing strength is guaranteed; the centers of the upper rocker arm 6 and the lower rocker arm 7 are both hinged on the frame 1, two ends of the upper rocker arm 6 are respectively connected with the upper parts of a left steering knuckle 10 and a right steering knuckle 11 through a first rod end joint bearing 8 and a second rod end joint bearing 9, and two ends of the lower rocker arm 7 are respectively connected with the lower parts of the left steering knuckle 10 and the right steering knuckle 11 through a third rod end joint bearing 12 and a fourth rod end joint bearing 13;

the deflection and steering mechanism 2 further comprises a steering structure, the steering structure comprises a front steering column sleeve 14 fixed on the frame 1, the front steering column 15 penetrates through the front steering column sleeve 14, a connecting rod 16 extends from the side wall of the front steering column 15, the connecting rod 16 is connected to a shaft seat 18 of the universal steering mechanism 17, the universal steering mechanism 17 comprises a left pull rod 88 and a right pull rod 89 which are coaxially distributed, and the left end and the right end of the left pull rod 88 and the right pull rod 89 are respectively connected with a fifth rod end joint bearing 19 arranged at the front end of the left steering knuckle 10 and a sixth rod end joint bearing 20 arranged at the front end of the right steering knuckle 11; the right end and the left end of the left pull rod 88 and the right pull rod 89 are respectively connected with a ninth rod end joint bearing 90; the ninth rod end joint bearing 90 comprises a main body 91, a left connecting rod 92 and a right connecting rod 93 which are arranged on the main body 91 and are oppositely distributed, and the left connecting rod 92 and the right connecting rod 93 are respectively connected and fixed with the left pull rod 88 and the right pull rod 89; a handlebar 21 is arranged at the upper end of the front steering column 15, and a foldable structure is arranged on the front steering column 15;

the first rod end joint bearing 8, the second rod end joint bearing 9, the third rod end joint bearing 12, the fourth rod end joint bearing 13 and the universal steering mechanism 17 are all provided with a dustproof protective sleeve 22;

as shown in fig. 6, in order to further simplify the assembly process and reduce the production cost, the two front wheels 4 are respectively mounted on the left and right knuckles 10 and 11, and the two front wheels 4 are respectively connected with the left and right knuckles 10 and 11 through a fixing structure 23, the fixing structure 23 includes an axle 24 fixedly connected with the center of the front wheel 4 and having external threads, and an axle hole arranged on the knuckle 10, a plurality of bearings 25 are mounted in the axle hole, the axle 24 passes through the bearings 25 and extends to the outer side of the other end of the knuckle, and finally a nut 26 is screwed on the axle 24;

as shown in fig. 3 and 5, in order to improve the safety of the scooter during turning, a first yaw angle limiting device 27 is particularly arranged on the upper rocker arm 6 or the lower rocker arm 7, the first yaw angle limiting device 27 comprises arched limiting plates 28 which are centered on the hinge point of the upper rocker arm 6 or the lower rocker arm 7 and the frame 1 and span two sides of the upper rocker arm 6 or the lower rocker arm 7, the frame 1 is located within the arched range of the limiting plates 28, and when the upper rocker arm 6 or the lower rocker arm 7 swings to a limit angle relative to the frame 1, the frame 1 abuts against the arched inner walls of the limiting plates 28, so that the upper rocker arm 6 or the lower rocker arm 7 is limited from continuing to expand the angle yaw relative to the frame 1; the distance between the arched inner wall and the frame 1 determines the limit angle of the upper rocker arm 6 and the lower rocker arm 7 of the scooter when the upper rocker arm and the lower rocker arm deflect relative to the frame 1;

as shown in fig. 14, the arched inner wall of the limiting plate 28 is provided with a left limiting block 57 and a right limiting block 58, and the left limiting block 57 and the right limiting block 58 are made of rubber or nylon and respectively correspond to the frame 1. Specifically, when the upper and lower rocker arms 6, 7 reach the limit deflection angle relative to the vehicle frame, the left and right limiting

blocks

57, 58 are abutted against the vehicle frame, and the left limiting block 57 and the right limiting block 58 made of rubber or nylon can play a certain role in protecting the vehicle frame 1.

As shown in fig. 3 and 5, in order to make the scooter more convenient to park and park, the yaw locking mechanism 29 replaces the existing foot support, the yaw locking mechanism 29 is installed between the frame 1 and the upper rocker arm 6 or the lower rocker arm 7, the yaw locking mechanism 29 includes the movable latch mechanism 30 fixed on the frame 1, the movable latch mechanism 30 is matched with the limiting plate 28, and after the movable latch mechanism 30 is matched and locked with the limiting plate 28, the limiting plate 28 and the frame 1 are relatively fixed, so as to complete parking.

As shown in fig. 7 to 10, the shock absorbing tire mechanism includes a hub 32, the hub 32 is fixedly connected to the wheel axle 24 at the center, a spoke 33 is provided at the outer edge of the hub 32, a rim 34 is provided outside the spoke 33, a tire body 35 is provided outside the rim 24, the tire body 35 includes a solid layer 36 and a hollow shock absorbing layer 37 provided inside the solid layer 36, and the spoke 33 is a plurality of coil springs 38 or rod springs 39 uniformly distributed circumferentially.

As shown in fig. 7, the hollow shock-absorbing layer 37 is a honeycomb structure layer, and the honeycomb structure layer includes a plurality of regular hexagonal holes having axes parallel to the axis of the tire body.

As shown in fig. 8, the hollow shock-absorbing layer 37 is a multi-circular hole structure layer, and the multi-circular hole structure layer includes a plurality of circular holes with axes parallel to the axis of the tire body.

As shown in fig. 13, the first rod end joint bearing 8, the second rod end joint bearing 9, the third rod end joint bearing 12 and the fourth rod end joint bearing 13 are all identical in structure, and include a bearing housing 40, a fixing rod 41 is disposed on the bearing housing 40, and at least two through holes 42 are disposed on the fixing rod 41; mounting grooves 43 are respectively formed in two ends of the upper swing arm 6 and two ends of the lower swing arm 7, the fixing rod 41 is inserted into the mounting grooves 43, and a bolt 44 sequentially penetrates through a mounting hole 45 in the mounting groove 43 and a through hole 42 of the fixing rod 41 so as to fix the fixing rod 41 in the mounting groove 43. Specifically, for the convenience of processing, the number of the through holes 42 is two, the mounting groove 43 divides the upper rocker arm 6 into a front part and a rear part, one half of the mounting hole 45 is located at the front part, the other half is located at the rear part, the mounting hole 45 located at the front part is a counter bore 46, the mounting hole 45 located at the rear part is a threaded hole 47, during mounting, the bolt 44 penetrates through the counter bore 46 and the through hole 42 to be directly screwed in the threaded hole 47, and the assembly is rapid and accurate.

As shown in fig. 13, a front steering column rotation angle limiting device is arranged between the front steering column sleeve 14 and the connecting rod 16, the front steering column rotation angle limiting device includes a limiting piece 57 fixed on the front steering column sleeve 14, an arc-shaped limiting hole 58 is formed in the limiting piece 57, a limiting pin 59 extends from the connecting rod 16, and the limiting pin 59 is inserted into the arc-shaped limiting hole 58. Specifically, after the front steering column 15 is rotated and the connecting rod 16 is driven to rotate to a certain angle, the limiting pin 59 abuts against the side wall of the arc-shaped limiting hole 58, so that the front steering column 15 is limited to continue rotating.

As shown in fig. 11 and 12, a seat cushion folding and unfolding device is further mounted on the frame 1, the seat cushion folding and unfolding device includes a first support rod 48, a second support rod 49 and a third support rod 50, one end of the first support rod 48 is hinged to the frame 1, and the other end is connected with a seat cushion 51; one end of the second support rod 49 is hinged with the first support 60 on the first support rod 48, the other end is provided with a movable shaft 52 and a blocking pin 53, the movable shaft 52 is arranged in a long waist hole 54 of the third support rod 50, the blocking pin 53 can be matched and arranged in a blocking groove 55 at one end of the third support rod 50, the other end of the third support rod 50 is hinged on the second support 56, and the second support 56 is fixed on the frame 1; when the position-locking pin 53 is matched in the position-locking groove 55, the second support bar 49 and the third support bar 50 form a whole and are in a linear state, and the first support bar 48, the second support bar 49 and the third support bar 50 form a triangular support structure together; when the locking pin 53 leaves the locking groove 55, the first support rod 48 can be folded relative to the second support rod 49 and the second support rod 49 can be folded relative to the third support rod 50, so that the first support rod 48 can be turned downwards relative to the frame 1 and can be folded.

As shown in fig. 15 and 16, another embodiment of the present invention is different in that: the upper rocker arm 6 comprises a left upper rocker arm 61 and a right upper rocker arm 62, the left upper rocker arm 61 and the right upper rocker arm 62 are respectively hinged with the frame 1 through a first pivoting mechanism and a second pivoting mechanism, and the first pivoting mechanism and the second pivoting mechanism are coaxial; the lower rocker arm 7 comprises a left lower rocker arm 63 and a right lower rocker arm 64, the left lower rocker arm 63 and the right lower rocker arm 64 are respectively hinged with the frame 1 through a third pivoting mechanism and a fourth pivoting mechanism, and the third pivoting mechanism and the fourth pivoting mechanism are coaxial; the front end and the rear end of the steering column sleeve 14 are respectively provided with a front hinged shaft 65 and a rear hinged shaft 66, the front hinged shaft 65 and the rear hinged shaft 66 are coaxial, the centers of a front inclined swing rod 67 and a rear inclined swing rod 68 are respectively hinged on the front hinged shaft 65 and the rear hinged shaft 66, the ends of the front inclined swing rod 67 and the rear inclined swing rod 68 which are positioned on the same side are respectively connected with a first fixed shaft 69 and a second fixed shaft 70, the upper left rocker arm 61 and the upper right rocker arm 62 are respectively provided with a third fixed shaft 71 and a fourth fixed shaft 72, the third fixed shaft 71 corresponds to the first fixed shaft 69, the fourth fixed shaft 72 corresponds to the second fixed shaft 70, the first fixed shaft 69 and the second fixed shaft 70 are respectively sleeved with a first shaft sleeve 73 and a second shaft sleeve 74, the third fixed shaft 71 and the fourth fixed shaft 72 are respectively sleeved with a third shaft sleeve 75 and a fourth shaft sleeve 76, and the third shaft sleeve 75 and the first shaft sleeve 73 are positioned between the third shaft sleeve 75 and the fourth shaft sleeve 73, Shock absorbers 77 are respectively connected between the fourth shaft sleeve 76 and the second shaft sleeve 74; the universal steering mechanism 17 comprises a left pull rod 84 and a right pull rod 85, the outer ends of the left pull rod 84 and the right pull rod 85 are respectively connected with a fifth rod end joint bearing 19 and a sixth rod end joint bearing 20, the inner ends of the left pull rod 84 and the right pull rod 85 are respectively connected with a seventh rod end joint bearing 86 and an eighth rod end joint bearing 87, and a pin shaft on the shaft seat 18 is connected with a center hole of the seventh rod end joint bearing 86 and a center hole of the eighth rod end joint bearing 87; the left pull rod 84 and the right pull rod 85 are arranged in a front-back manner or an up-down manner.

As shown in fig. 17, a second deflection angle limiting device is arranged between the upper left rocker arm 61 and the upper right rocker arm 62 or between the lower left rocker arm 63 and the lower right rocker arm 64, the second deflection angle limiting device comprises a left limiting plate 78 and a right limiting plate 79, the left limiting plate 78 and the right limiting plate 79 are arranged at intervals in the front-back direction, inner walls of the left limiting plate 78 and the right limiting plate 79 are respectively provided with a left limiting block 80 and a right limiting block 81, and the left limiting block 80 and the right limiting block 81 are respectively correspondingly matched with the abutting parts of the frame 1; the left limit plate 78 and the right limit plate 79 are provided with corresponding limit holes 82, and a limit bolt 83 arranged on the frame 1 can movably match with the corresponding limit holes 82; when the scooter parks, the limiting holes 82 on the left limiting plate 78 and the right limiting plate 79 are in opposite positions, and the limiting bolt 83 can simultaneously penetrate through the limiting holes 82 on the left limiting plate 78 and the right limiting plate 79. In order to make the limit bolt 83 be inserted into the limit hole 82 more easily, the limit hole 82 is preferably designed as a long kidney hole.

The scooter provided by the embodiment of the invention is described in detail, a specific example is applied in the text to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the technical scheme disclosed by the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. A scooter, its characterized in that: the steering device comprises a frame, a deflection and steering mechanism, a driving wheel and two front wheels, wherein the deflection and steering mechanism is arranged at the front end of the frame, the two front wheels are connected with the deflection and steering mechanism, and the two front wheels are symmetrically positioned on two sides of the frame by taking the frame as a center; the driving wheel is arranged at the rear part of the frame;

the deflection and steering mechanism comprises an upper rocker arm and a lower rocker arm, the centers of the upper rocker arm and the lower rocker arm are both hinged on the frame, two ends of the upper rocker arm are respectively connected with the upper parts of the left steering knuckle and the right steering knuckle through a first rod end joint bearing and a second rod end joint bearing, and two ends of the lower rocker arm are respectively connected with the lower parts of the left steering knuckle and the right steering knuckle through a third rod end joint bearing and a fourth rod end joint bearing;

the two front wheels are respectively arranged on the left steering knuckle and the right steering knuckle, and are respectively connected with the left steering knuckle and the right steering knuckle through a fixing structure, the fixing structure comprises a wheel shaft fixedly connected with the center of the front wheel and provided with external threads, and a shaft hole arranged on the steering knuckle, a plurality of bearings are arranged in the shaft hole, the wheel shaft penetrates through the bearings and extends to the outer side of the other end of the steering knuckle, and finally nuts are screwed on the wheel shaft;

a front steering column rotation angle limiting device is arranged between the front steering column sleeve and the connecting rod and comprises a limiting piece fixed on the front steering column sleeve, an arc-shaped limiting hole is formed in the limiting piece, a limiting pin extends from the connecting rod and penetrates through the arc-shaped limiting hole;

the upper rocker arm and the lower rocker arm are of an integrated structure, a deflection angle limiting device I is arranged on the upper rocker arm or the lower rocker arm, the deflection angle limiting device I comprises an arched limiting plate which is centered on a hinge point of the upper rocker arm or the lower rocker arm and the frame and stretches across two sides of the upper rocker arm or the lower rocker arm, the frame is located in the arched range of the limiting plate, and when the upper rocker arm or the lower rocker arm deflects to a limiting angle relative to the frame, the frame abuts against the arched inner wall of the limiting plate, so that the upper rocker arm or the lower rocker arm is limited from continuously expanding angle deflection relative to the frame; a deflection locking mechanism is arranged between the frame and the upper rocker arm or the lower rocker arm, the deflection locking mechanism comprises a movable spring bolt mechanism fixed on the frame, the movable spring bolt mechanism is matched with a limiting plate, and after the movable spring bolt mechanism is matched and locked with the limiting plate, the limiting plate and the frame are relatively fixed to finish parking; the two front wheels and the driving wheel are damping tire mechanisms; the universal steering mechanism comprises a left pull rod and a right pull rod which are coaxially distributed, the outer ends of the left pull rod and the right pull rod are respectively connected with a fifth rod end joint bearing and a sixth rod end joint bearing, the inner ends of the left pull rod and the right pull rod are respectively connected with a ninth rod end joint bearing, and a pin shaft on a shaft seat is connected with the ninth rod end joint bearing; the ninth rod end joint bearing comprises a main body, a left connecting rod and a right connecting rod which are arranged on the main body and are oppositely distributed, and the left connecting rod and the right connecting rod are respectively connected and fixed with the left pull rod and the right pull rod;

the upper rocker arm comprises a left upper rocker arm and a right upper rocker arm, the left upper rocker arm and the right upper rocker arm are respectively hinged with the frame through a first pivoting mechanism and a second pivoting mechanism, and the first pivoting mechanism and the second pivoting mechanism are coaxial; the lower rocker arm comprises a left lower rocker arm and a right lower rocker arm, the left lower rocker arm and the right lower rocker arm are respectively hinged with the vehicle frame through a third pivoting mechanism and a fourth pivoting mechanism, and the third pivoting mechanism and the fourth pivoting mechanism are coaxial; the front end and the rear end of the steering column sleeve are respectively provided with a front articulated shaft and a rear articulated shaft, the front articulated shaft and the rear articulated shaft are coaxial, the centers of a front inclined swing rod and a rear inclined swing rod are respectively articulated on the front articulated shaft and the rear articulated shaft, a first fixed shaft and a second fixed shaft are respectively connected between the end parts of the front inclined swing rod and the rear inclined swing rod which are positioned on the same side, the upper left rocker arm and the upper right rocker arm are respectively provided with a third fixed shaft and a fourth fixed shaft, the third fixed shaft corresponds to the first fixed shaft, the fourth fixed shaft corresponds to the second fixed shaft, the first fixed shaft and the second fixed shaft are respectively sleeved with a first shaft sleeve and a second shaft sleeve, and a shock absorber is respectively connected between the third shaft sleeve and the first shaft sleeve and between the fourth shaft sleeve and the second shaft sleeve; the universal steering mechanism comprises a left pull rod and a right pull rod, the outer ends of the left pull rod and the right pull rod are respectively connected with a fifth rod end joint bearing and a sixth rod end joint bearing, the inner ends of the left pull rod and the right pull rod are respectively connected with a seventh rod end joint bearing and an eighth rod end joint bearing, and a shaft seat is connected with a central hole of the seventh rod end joint bearing and a central hole of the eighth rod end joint bearing; the left pull rod and the right pull rod are arranged in a front-back manner or in an up-down manner; a second deflection angle limiting device is arranged between the upper left rocker arm and the upper right rocker arm or between the lower left rocker arm and the lower right rocker arm, the second deflection angle limiting device comprises a left limiting plate and a right limiting plate, the left limiting plate and the right limiting plate are arranged at intervals in the front-back direction, the inner walls of the left limiting plate and the right limiting plate are respectively provided with a left limiting block and a right limiting block, and the left limiting block and the right limiting block are respectively correspondingly matched with the abutting parts of the frame; the left limiting plate and the right limiting plate are provided with corresponding limiting holes, and limiting bolts arranged on the frame are matched with the corresponding limiting holes; when the scooter parks, spacing hole on left limiting plate and the right limiting plate is in just right the position, and spacing bolt can pass the spacing hole on left limiting plate and the right limiting plate simultaneously.

2. The scooter of claim 1, wherein: the upper rocker arm and the lower rocker arm are both of a profile one-step forming or punch forming structure.

3. The scooter of claim 1, wherein: the arched inner wall of the limiting plate is provided with a left limiting block and a right limiting block, and the left limiting block and the right limiting block are made of rubber or nylon materials and respectively correspond to the frame.

4. The scooter of claim 1, wherein: the damping tire mechanism comprises a wheel hub, the center of the wheel hub is fixedly connected with a wheel shaft, a spoke is arranged on the outer edge of the wheel hub, a rim is arranged outside the spoke, a tire body is arranged outside the rim, the tire body comprises a solid layer and a hollow damping layer arranged on the inner side of the solid layer, and the spoke is a plurality of spiral springs or rod springs which are uniformly distributed on the circumference.

5. The scooter of claim 4, wherein: the hollow shock-absorbing layer is a honeycomb structure layer, and the honeycomb structure layer comprises a plurality of round holes with axes parallel to the axis of the tire body.

6. The scooter of claim 1, wherein: the first rod end joint bearing, the second rod end joint bearing, the third rod end joint bearing and the fourth rod end joint bearing are all consistent in structure and comprise bearing shells, fixing rods are arranged on the bearing shells, and at least two through holes are formed in the fixing rods; the both ends of going up the rocking arm, the both ends of lower rocking arm are provided with the mounting groove respectively, and the dead lever is inserted and is established in the mounting groove, thereby the bolt passes mounting hole on the mounting groove in proper order, the through-hole of dead lever fixes the dead lever in the mounting groove.

7. The scooter of claim 1, wherein: the frame is also provided with a cushion folding and unfolding device, the cushion folding and unfolding device comprises a first support rod, a second support rod and a third support rod, one end of the first support rod is hinged to the frame, and the other end of the first support rod is connected with a cushion; one end of the second support rod is hinged with the first support seat on the first support rod, the other end of the second support rod is provided with a movable shaft and a clamping pin, the movable shaft is arranged in a long waist hole of the third support rod, the clamping pin can be matched and arranged in a clamping groove at one end of the third support rod, the other end of the third support rod is hinged on the second support seat, and the second support seat is fixed on the frame; when the clamping pin is matched in the clamping groove, the second support rod and the third support rod form a whole and are in a linear state, and the first support rod, the second support rod and the third support rod form a triangular support structure together; when the clamping pin leaves the clamping groove, the first supporting rod is foldable relative to the second supporting rod and the second supporting rod is foldable relative to the third supporting rod, so that the first supporting rod is turned downwards relative to the frame and is folded.