阅读说明：本技术 带有正交轴的可侧倾电动、机动三轮摩托 (Electric motor tricycle with orthogonal axis and capable of inclining laterally ) 是由 吴小平 罗天珍 于 2021-04-19 设计创作，主要内容包括：带有正交轴的可侧倾电动、机动三轮摩托,主要构造包括：车前体、车后体、正交轴连接件、减震器、电气部分、动力电池；车前体包括：前轮、车把、车前架、前叉及前叉轴,车后体包括：车后架、双后轮；差异车性特征就在于：必需用正交轴连接件连接车前体与车后体；在车前体与车后体之间使用了减震器的或扭转减震器；而在使用减震器的情况时,在减震器的下孔与车后体之间需要连接摆动片；复位弹片是选用部件,安装在车前体或车后体上,并触抵车后体或车前体,并设置有弹片卡点限制了复位弹片端点的行程；逆止差速器也是选用部件,使用时安装在后轴(后桥)上,替代差速器的位置；可以被广泛应用于电动、机动三轮摩托行业。(The motor-driven motor tricycle with right angle axis and capable of being tilted includes the following main structure: the front body, the rear body, the orthogonal shaft connecting piece, the shock absorber, the electric part and the power battery are arranged on the front body; the vehicle front body includes: front wheel, handlebar, car front-end frame, front fork and front fork axle, the car afterbody includes: a rear frame and double rear wheels; the difference is characterized by comprising the following steps: orthogonal axis connectors are required to connect the front body and the rear body; a damper or torsional damper is used between the front body and the rear body; when the shock absorber is used, a swinging sheet needs to be connected between the lower hole of the shock absorber and the rear body of the vehicle; the reset elastic sheet is a selected part, is arranged on the front body or the rear body of the vehicle, contacts the rear body or the front body of the vehicle, and is provided with an elastic sheet clamping point for limiting the stroke of an end point of the reset elastic sheet; the non-return differential is also an optional component, and is arranged on a rear shaft (rear axle) to replace the position of the differential when in use; can be widely applied to the industries of electric motor tricycles and motor tricycles.)

1. Electric motor tricycle with orthogonal axes, capable of tilting, comprising: the front body, the rear body, the orthogonal shaft connecting piece, the shock absorber, the electric part and the power battery are arranged on the front body; the vehicle front body includes: the front wheel is arranged on the front fork which can freely rotate around the front fork shaft, and the freely rotating handlebar is used for steering; the vehicle rear body includes: a rear frame and double rear wheels; the main assembly relation and the working principle are as follows: the front fork with a handlebar is used for installing a front wheel, can freely rotate in a front fork shaft hole, and double rear wheels are installed on a rear frame of the bicycle; the orthogonal axis connecting piece connects the front body and the rear body; a swinging sheet is arranged between the rear body of the vehicle and the shock absorber; a reset spring piece which keeps the mutual positive position is arranged between the front body and the rear body of the bicycle; under the condition that an internal combustion engine or an electric motor is used for power driving, a power output shaft of the electric motor is connected with a conventional differential or directly connected with a single wheel or connected with a non-return differential of the invention; other conventional components that are attached include: the power battery and the electric part are components for providing electric energy and controlling the motor, such as a handle, a saddle, a car lamp, an instrument, a decoration part and the like, and belong to the conventional known technology; the method is characterized in that: orthogonal axis connectors are required to connect the front body and the rear body; a damper or torsional damper is used between the front body and the rear body; when the shock absorber is used, a swinging sheet needs to be connected between the lower hole of the shock absorber and the rear body of the vehicle; the reset spring plate is a selected part, one end of the reset spring plate is arranged on the front body or the rear body of the vehicle, the other end of the reset spring plate is abutted against the rear body or the front body of the vehicle, and a spring plate clamping point is arranged to limit the stroke of the endpoint of the reset spring plate.

2. Motor-tricycle with lateral heelable electric, motorized motor with orthogonal axes according to claim 1, characterized in that: the orthogonal shaft connecting piece is provided with two orthogonal rotating shafts or shaft holes; one is an orthogonal shaft or axle hole, the direction of which is close to the straight driving direction of the vehicle, and the close degree is that the included angle between the axis of the orthogonal shaft or axle hole and the straight driving direction is less than 45 degrees; the other is an axial or axial axis perpendicular to the orthogonal axis; the installation relation is as follows: the orthogonal shaft, the axial shaft or the shaft hole of the orthogonal shaft connecting piece are respectively butted with the corresponding shaft hole or the axial shaft on the front body and the rear body of the vehicle; the front body and the rear body can rotate around an orthogonal axis and can also rotate around an axial axis which forms 90 degrees with the orthogonal axis; the front body and the rear body can have independent 2 vertical direction rotation functions; the orthogonal axle connection enables the front body of the vehicle to be inclined to the ground, while the rear axle of the rear body of the vehicle with the double rear wheels is always parallel to the ground.

3. Motor-tricycle with lateral heelable electric, motorized motor with orthogonal axes according to claim 1, characterized in that: the installation of the swinging piece refers to that: directly matching the swinging plate orthogonal swinging shaft or hole with a swinging plate shaft hole or shaft of the rear body of the vehicle to ensure that the swinging plate swings around the hole or shaft; 1 and 2 … 10 shaft holes or shafts vertical to the driving direction are also arranged on the upper part and are used for connecting the lower ends of the shock absorbers; the purpose is to obtain the support and the damping that rotate around the axial axis each other between the car forebody and the car afterbody, and the swing slice connecting axle can be with the part that the lower part of a plurality of shock absorbers links, the upper portion of the shock absorber is connected with the respective shock absorber upper end axle of the car forebody, and the swing slice orthogonal pendulum shaft is coaxial, equidirectional with the orthogonal axis of the orthogonal axis connecting piece in principle; the difference in design and installation should be as small as possible, because the rotation of the axial shaft of the connecting piece of the orthogonal shaft connecting piece can change the directions of the orthogonal swing shaft and the orthogonal shaft of the swing piece a little during the running; in summary: the swinging piece which is arranged on the rear body of the vehicle and can swing around the orthogonal axis (the driving direction) can be matched with the stable and constant damping of the connected damper along with the side-rolling swinging of the front body of the vehicle, so that the distance between the upper hanging point and the lower hanging point of the damper does not change the length along with the single side-rolling of the front body of the vehicle, and the stability of the elastic force of the damper is kept; or using a substitute for the oscillating piece: the oscillating plate is not used when the damper is twisted. The torsional damper is installed and acted on the axial shaft, 2 torsion arms of the torsional damper are respectively propped against the front body and the rear body of the vehicle; in this case, the swing piece is not necessarily required.

4. Motor-tricycle with lateral heelable electric, motorized motor with orthogonal axes according to claim 1, characterized in that: the reset elastic sheet has the function of keeping the normal position relation of the mutual rotation balance positions between the front body and the rear body of the bicycle in a non-riding state, and actually, the reset elastic sheet can use a spiral spring or an elastic sheet spring, and two ends of the spring are respectively fixed on the front body and the rear body of the bicycle; especially in case 2 springs (left, right) are used: the prestress stuck point plays a role in limiting the 2 reset elastic sheets, so that the reset elastic sheets generate certain prestress, and the reset stuck point can generate certain holding force at the position of the normal position relation between the front body and the rear body of the vehicle, in summary: when the automobile is parked, the relative position between the front body and the rear body of the automobile is kept in a natural unconstrained state, or in a limit clamping point or a reset elastic sheet. When the 'clip point' is set, the stroke of the reset clip end point is limited by the clip point. Otherwise, when the vehicle is parked, if the reset elastic sheet is not adopted, the vehicle front body can only keep a natural inclination state; the vehicle body can be kept in a normal state during parking and low-speed running, and the low-speed controllability is good.

[ technical field ]

The invention belongs to the technical field of machinery; the front body and the rear body of the tricycle are connected in an orthogonal axis mode by using the main hinge shaft, so that the tricycle with electric power, manpower power and internal combustion power is used on the premise of inheriting parking convenience and low-speed running stability. Meanwhile, the device has high-quality control performance of allowing small-radius rotation under high-speed running.

[ background art ]

The first electric tricycle was born in 1881 while the three-wheeled fuel-oil motorcycle was invented by the french engineer gustev-derufu, which is a tricycle powered by lead-acid batteries, whereas in 1873 the electric tricycle invented by the english robert-davison, powered by a primary battery, was not internationally acknowledged. Later on, lead-acid, nickel-cadmium and nickel-hydrogen batteries, lithium ion batteries and fuel cells have appeared as electric vehicles.

The fuel internal combustion engine is used as power and is always used as a common configuration of a tricycle. But in recent years, the pursuit of depletion and emission reduction of petroleum is generated; an electric tricycle (electric operated tricycle) is a three-wheeled transportation tool which takes a battery as power and a motor as drive for pulling goods or people. The electric tricycle adopts a tubular high-capacity, left and right liner, deep discharge and traction type storage battery, can meet the requirement of continuous discharge during long-time work, and has the advantages of normal use for two years and no reduction of the internal capacity.

The electric power is used as an important energy source with environmental protection, cleanness and high conversion rate, is widely applied to production and life, is used as the application to drive the updating and upgrading of vehicles, promotes the low-carbon development of the transportation industry, reduces the transportation cost, saves the energy source and protects the environment, is one of the important subjects of worldwide research, and has been applied to the fields of electric urban public transport vehicles, factory and mine electric transport vehicles, electric urban sanitation cleaning vehicles, engineering, tunnels, subway construction special vehicles and the like after decades of development. The electric tricycle has the advantages of strong applicability, flexibility, simple maintenance, convenient maintenance, low price and the like, and can flexibly pass through narrow roads. The electric tricycle is provided with a reversing switch, so that the reversing running function can be conveniently realized, the electric tricycle is very practical in narrow roads such as alleys and alleys, and is very convenient for running and parking. The method is widely applied to the short-distance transportation fields of families, cities and countryside, individual leasing, factories, mining areas, environmental sanitation, community cleaning and the like.

The electric tricycle is divided into various models of a household type, a freight type and a factory type according to the purpose. The household electric tricycle mainly adopts a side wheel motor and an external frame (the frame is arranged outside wheels), the vehicle with the structure has no large shaft, the load weight is light, generally about 200KG, the motor is generally 350-500W, and the battery is 12V20AH, so that the household electric tricycle is suitable for being used as a tool for replacing walking for households and the old. The tricycle has good stability, the middle motor drives the rear two wheels simultaneously, and the tricycle is stable in starting, but the tricycle is generally expensive.

The freight type electric tricycle is also divided into two types, one type is a motorcycle type, the configuration and the style are almost the same as those of a three-wheeled motorcycle, a middle motor is provided with a large shaft, a motor with the weight of more than 500W is arranged, the freight capacity is generally 300 and 600KG, and a reversing switch and a speed regulating system are arranged. The fastest speed is about 35 km. The motor tricycle is mainly formed by refitting a motor tricycle, a rear axle and a carriage are completely configured by the motor tricycle, the load is more than one ton, the speed can be regulated by a gearbox, 4-5 120AH large-capacity storage batteries and a motor with the direct current of more than 900W are configured, and the motor is provided with a cab and is not provided with the cab, and a hydraulic lifting device can also be configured, so that the motor tricycle is used for loading and unloading bulk materials in a factory and cleaning and transporting garbage in a city.

The tricycle compares advantage with 2 wheelers:

the stability is good, especially the driving stability at low speed; the safety of driving.

The disadvantages of a tricycle compared to a 2-wheel vehicle are:

flexibility in turning at high speed, and subjective feel of steering.

Specifically, the tricycle is divided into a front 2-wheel configuration and a rear 2-wheel configuration, when steering, a handlebar needs to be twisted, a front fork rotates around a front fork shaft, and the front wheel is driven to rotate; the rotation center of the vehicle is positioned in the intersection zone of the extension lines of the front wheel shaft and the rear wheel shaft; the larger the steering of the handlebar, the shorter the wheel base and the smaller the turning radius. Most of tricycles cannot tilt due to twisting of handlebars, and cannot be balanced by using a component force of gravity to resist inertial centrifugal force of turning by using the side inclination of a vehicle body and a rider like a 2-wheel bicycle. Thus, a tricycle without a roll configuration cannot combine a small turning radius with a high form speed.

A small part of tricycles are designed to incline, and the tricycle comprises two types: the front wheels and the vehicle body are inclined, and the rear 2 wheels are not inclined; the front wheel and the rear 2 wheel are inclined consistently, and the structural characteristics of the mode are divided into a parallelogram synchronous traction type mode and an asynchronous mode of independent double rear wheel swing arms; the above modes can be designed into a mode that 2 wheels are in front and a single wheel is in back.

A three-wheeled electric vehicle that rolls is one of typical examples: the German Enmashi side-tipping three-wheeled electric vehicle is characterized in that a closed tricycle with a front wheel and a vehicle body side tipping and a rear 2-wheel non-side-tipping mode can drift and bend like a 2-wheel motorcycle; the steering wheel is connected with a hydraulic tilting system, so that the tilting degree of the vehicle body relative to the rear axle is controlled in a linkage manner through the hydraulic system; when the motorcycle is over-bent, the motorcycle body can be flexibly twisted like a 2-wheel motorcycle, and the high speed is not needed.

A three-wheeled electric vehicle that rolls is the second typical example: as early as 2014, australian, simmonwilliams, invented: the asynchronous electro-tricycle with independent double rear wheel swing arms utilizes the active side tilting of a rider to press the inner rear wheel when the electro-tricycle turns, so that the electro-tricycle is lifted relative to a frame body, the rear wheel on the other side is lowered relative to the frame body, and all the rear wheels are landed when a tricycle body inclines.

The three-wheeled electric vehicle with the side-tipping function is the third typical example: the method is produced by manufacturers in China and Europe and is characterized in that: the double rear wheels can be synchronously inclined along with the inclination of the vehicle body under the restraint of the synchronous connecting rod.

[ summary of the invention ]

The invention aims to solve the defects of the prior art and overcome the comprehensive defects of the existing side-tipping electric tricycle: develops a tricycle with a brand new thought, which has simpler structure, safer control and stronger practicability.

The invention has the characteristics that:

the front body and the rear body of the vehicle are skillfully butted by adopting an orthogonal shaft connecting piece, so that the front body of the vehicle can incline laterally, and the rear body of the vehicle with 2 wheels is kept stable all the time; the swinging piece arranged on the rear body of the vehicle can realize stable and constant damping of the damper; the reset spring plate also solves the problem of maintaining the normal position between the front body and the rear body of the vehicle when the vehicle is parked; the non-return differential mechanism of the invention is used for replacing the conventional differential mechanism, and the cost and the weight are greatly reduced.

The invention has the specific structure that:

the structure of an electric motor-tricycle with an orthogonal axis, capable of being tilted, comprises: the front body, the rear body, the orthogonal shaft connecting piece (connecting the front body and the rear body), the shock absorber (arranged between the front body and the rear body), the electric part (controlling the whole vehicle), and the power battery (providing the energy of the whole vehicle); the vehicle front body includes: the front wheel is arranged on the front fork which can freely rotate around the front fork shaft, and the freely rotating handlebar is used for steering; the vehicle rear body includes: vehicle rear frame and (double) rear wheels.

The main assembly relation and the working principle are as follows: known techniques employed include: the front fork with a handlebar is used for mounting a front wheel and the front fork and can freely rotate in a front fork shaft hole; the double rear wheels are arranged on the rear frame of the vehicle; the orthogonal axis connecting piece is the core technology of the invention; the front body and the rear body are connected, and the structure is provided with two orthogonal rotating shafts or shaft holes; one is an orthogonal shaft or axle hole, the direction of which is close to the straight driving direction of the vehicle, and the close degree is that the included angle between the axis of the orthogonal shaft or axle hole and the straight driving direction is less than 45 degrees; the other is an axial or axial axis perpendicular to the orthogonal axis; the installation relation is as follows: the orthogonal axis, the axial axis or the axle hole of the orthogonal axis connecting piece are respectively butted with the corresponding axle hole or the axial axis on the front body and the rear body (or called as the orthogonal axis mode, because the included angle between the two axes is 90 degrees, the axes are mutually perpendicular); the front body and the rear body can rotate around an orthogonal axis and can also rotate around an axial axis which forms 90 degrees with the orthogonal axis; the front body and the rear body can have independent 2 vertical direction rotation functions; the orthogonal axle connection enables the front body of the vehicle to be inclined to the ground, while the rear axle of the rear body of the vehicle with the double rear wheels is always parallel to the ground. .

The swinging sheet is a secondary technology of the invention; the swinging piece on the swinging piece is orthogonal to the swinging shaft or hole and is directly matched with the swinging piece shaft hole or shaft of the rear body of the vehicle, so that the swinging piece swings around the hole or shaft; 1 or more (the number depends on the number of the shock absorbers) shaft holes or shafts with the driving directions vertical to the upper part are also arranged on the upper part and are used for connecting the lower ends of the shock absorbers; the purpose is to obtain the support and the damping that rotate around the axial axis each other between the car forebody and the car afterbody, and the swing slice connecting axle can be with the part that the lower part of a plurality of shock absorbers links, the upper portion of the shock absorber is connected with the respective shock absorber upper end axle of the car forebody, and the swing slice orthogonal pendulum shaft is coaxial, equidirectional with the orthogonal axis of the orthogonal axis connecting piece in principle; the difference in design and installation should be as small as possible, because the rotation of the axial shaft of the connecting piece of the orthogonal shaft connecting piece can change the directions of the orthogonal swing shaft and the orthogonal shaft of the swing piece a little during the running; or use a torsional damper.

In summary: the oscillating piece mounted on the rear body of the vehicle and capable of oscillating around the orthogonal axis (driving direction) can be matched with the stable and constant damping of the connected damper along with the rolling oscillation of the front body of the vehicle, so that the distance between the upper hanging point and the lower hanging point of the damper does not change with the single rolling of the front body of the vehicle (when the rear body of the vehicle does not roll synchronously), and the stable degree of the elastic force of the damper is kept.

The reset spring plate is also a secondary technology of the invention: the function of the bicycle is to keep the front bicycle body and the rear bicycle body in a correct position relation of mutual rotation balance positions in a non-riding state (the so-called correct position relation is that the axial axis of a connecting piece of the orthogonal axis connecting piece is parallel to the rear axes 1 and 2, namely parallel to the ground); in fact, the reset spring may be: a coil spring (using its pushing or pulling force), or a leaf spring; two ends of the spring are respectively fixed on the front body and the rear body of the vehicle; especially in the case of using 2 springs: prestress stuck point) plays a role in limiting 2 reset spring plates, so that the reset spring plates generate certain prestress, and the reset stuck point can generate certain holding force at the position of the normal relation between the front body and the rear body of the vehicle, so that the vehicle body is helped to keep a normal state when the vehicle is parked and runs at low speed, and the low-speed controllability is good.

In summary: when the automobile is parked, the relative position between the front body and the rear body of the automobile is kept in a natural unconstrained state, or the limiting clamping points are used for limiting the mutual rotating angles, or the resetting elastic sheets are used for limiting the mutual rotating angles, or the limiting clamping points and the resetting elastic sheets are used for limiting the mutual rotating angles at the same time. When the 'clip point' is set, the stroke of the reset clip end point is limited by the clip point. Otherwise, when parking, if the reset spring plate is not adopted, the vehicle front body can only keep a natural inclination state.

The non-return differential is also a secondary technology of the invention; the power drive of the rear wheels (rear axle) of the rear body of the vehicle uses an internal combustion engine or an electric motor, and a power shaft is connected with a conventional differential or directly connected with a single wheel or connected with a non-return differential of the invention; contrary differential mechanism directly refutes and connects rear axle, its structure includes: the large chain wheel is rigidly fixed on a chain wheel shaft sleeve, two ports of the chain wheel shaft sleeve are respectively provided with a one-way bearing, and the one-way bearings respectively and independently drive an independent rear shaft 1 and a rear shaft 2 which are connected with a rear wheel; the pressing spring plate provides radial pressure to the radial friction plate, then the radial friction plate penetrates through the friction window to contact the rear shaft 1 and the rear shaft 2, friction torque is generated, and backing torque is generated when backing (reverse torque cannot be provided by the one-way bearing). The friction window is a selective component, and if the reversing function is not considered, friction plates and the friction window can be completely omitted; for portable, particularly narrow rear track vehicle models, backing is not necessary.

In summary: the invention discloses a power drive of a three-wheeled motorcycle: the rear wheel (rear axle) of the rear body of the vehicle is driven by the motor, and a conventional differential or only a single wheel drive (the other wheel slides) can be used; or a non-return differential is used for driving; or a single front wheel drive (rear 2 wheel slip) is used.

Other conventional components that are attached include: the power battery and the electric part are components for providing electric energy and controlling the motor, such as a handle, a saddle, a car lamp, a meter, a peripheral part, a decorative part and the like, belong to the conventional well-known technology, and need not be described in detail.

Further: alternative to the oscillating piece: in addition, the shock absorption between the front body and the rear body can be replaced by a torsion damper, the torsion damper is arranged on an axial shaft (the torsion damper is mainly composed of a torsion spring, the torsion shaft of the spring is arranged on the axial shaft, so that the front body and the rear body generate torsion moment to resist, and the torsion moment of passengers on the vehicle is resisted), and 2 torsion arms of the torsion damper respectively abut against the front body and the rear body; the wobble plate is not necessarily required.

The invention has the beneficial effects that:

in addition to preserving the three-wheel nature of the vehicle: the parking is convenient, the low-speed driving is stable, and the special advantages of the 2-wheel vehicle are also achieved: excellent drivability at high speed, such as: in addition, the method also has 2 technological advances: the adoption of the reset elastic sheet obtains the non-side-tipping positive state of the vehicle front body during parking, thereby supporting the stability of low-speed running; and the non-return differential replaces the conventional differential, so that the cost and the weight are greatly reduced.

[ illustration ]

The invention will be further described with reference to a preferred embodiment;

FIG. 1 is a schematic structural view of a frame of a three-wheeled motorcycle capable of tilting with orthogonal axes.

FIG. 2 is an exploded view of a frame structure of a three-wheeled motorcycle with an orthogonal axis capable of being tilted.

FIG. 3 is a schematic view of a cross-axis connector.

FIG. 4 is a schematic view showing the connection of a rocking piece to a damper.

FIG. 5 is a structural view of a frame of a three-wheeled motorcycle tilted from the rear.

FIG. 6 is an exploded view of a frame of a three-wheeled motorcycle in a tilted state.

FIG. 7 is a structural view of a frame of a three-wheeled motorcycle tilted from the front.

FIG. 8 is a schematic view showing a structure of a return relationship of the return spring.

Description of reference numerals:

(1) front body of vehicle (the dotted line in the figure)

(1-1) front wheel

(1-2) handlebar

(1-3) front frame

(1-4) orthogonal shaft hole

(1-6) precursor checkpoint

(1-8) front fork

(1-9) front fork shaft

(2) Vehicle rear body (dotted line in the figure)

(2-1) electric machine

(2-2) rear frame

(2-3) rear wheel

(2-5) axial shaft hole

(2-6) Oscillating plate axial hole

(2-7) resetting stuck point

(2-8) drive chain

(2-9) rear axle sprocket assembly (or called rear axle)

(2-10) prestressed sticking point

(3) Orthogonal axis connector (for both right side and upside down)

(3-1) axial shaft hole of connecting piece

(3-2) orthogonal axes of connecting pieces

(3-3) shaft tube locking ring

(3-4) stuck point

(4) Swinging piece (or torsion shock absorber, or with damping)

(4-1) connecting shaft hole of swinging piece

(4-2) Oscillating piece orthogonal pendulum shaft hole

(5) Reset spring

(5-1) Return spring fixing end

(6) Shock absorber

(6-1) Upper end of shock absorber

(7) Orthogonal axes (direction of travel)

(8) Power battery

(9) Electrical part

[ example of embodiment ]

As shown in [ fig. 1], [ fig. 2], [ fig. 3], [ fig. 4], [ fig. 5], [ fig. 6], [ fig. 7] and [ fig. 8 ]:

the basic structure of an electric tricycle comprises: the device comprises a front vehicle body (1), a rear vehicle body (2), an orthogonal shaft connecting piece (3) for connecting the front vehicle body and the rear vehicle body, a swinging piece (4) for installing a shock absorber (6) between the front vehicle body and the rear vehicle body, a reset elastic piece (5) for keeping the mutual rotation balance position between the front vehicle body and the rear vehicle body, an electric part (9) for controlling the whole vehicle, and a power battery (8) for providing the energy of the whole vehicle. The vehicle front body (1) is composed of: the bicycle comprises a front wheel (1-1), a handlebar (1-2), a front frame (1-3), a front fork (1-8) and a front fork shaft (1-9); the front wheel (1-1) is arranged on a front fork (1-8) which can freely rotate around a front fork shaft (1-9); the rear body (2) is composed of: the rear frame (2-2), the motor (2-1), the rear wheel (2-3) and the transmission chain (2-8) transmit the power of the motor to the rear axle sprocket assembly (2-9).

Mainly as shown in [ fig. 3 ]: the orthogonal axis connector (3) is one of the core technologies of the invention; the aim is to obtain independent mutually orthogonal axis rotation between the front body (1) and the rear body (2); (1-6) the precursor checkpoint and the two orthogonal axes are: a spindle approaching the direction of the orthogonal axis (i.e., the direction of the driving line) (7), and an independent spindle with 2 degrees of freedom in the axial direction perpendicular to the driving direction (in the equilibrium position, only the orthogonal axis (7) can be ensured in the case where the front body is tilted, and the rear axis of the rear two wheels in this state is no longer parallel), and both the upright mounting and the inverted mounting are possible; namely, the axial shaft hole (3-1) of the connecting piece of the orthogonal shaft connecting piece (3) and the orthogonal shaft (3-2) of the connecting piece can be respectively butted on the front body (1) and the rear body (2) of the vehicle and locked by the shaft tube locking ring (3-3); in the embodiment, an axial shaft hole (2-5) of the rear body (2) is butted with a connecting piece axial shaft (3-1) of the orthogonal shaft connecting piece (3), and an orthogonal shaft hole (1-4) of the front body (1) is butted with a connecting piece orthogonal shaft (3-2) of the orthogonal shaft connecting piece (3); it should be noted that: the points (3-4) are used to limit the angle of rotation of the two parts relative to each other (the points are projections on the structure or edges of grooves on the structure).

Mainly as shown in [ fig. 4 ]: the swinging sheet (4) is also one of the core technologies of the invention; the swing piece orthogonal swing shaft hole (4-2) of the swing piece (4) is directly matched with the swing piece shaft hole (2-6) of the rear vehicle body (2) (so that the swing piece swing shaft rotates around the hole) by 0, the aim is to enable the front vehicle body (1) and the rear vehicle body (2) to be supported and damped by rotating around an axial shaft, the swing piece connecting shaft hole (4-1) can be connected with the lower parts of a plurality of shock absorbers (6) (the upper ends (6-1) of the shock absorbers (6) are connected with the corresponding hole inserting shafts of the front vehicle body), and the swing piece orthogonal swing shaft (4-2) is coaxial and equidirectional with the orthogonal shaft (7) of the orthogonal shaft connecting piece (3) in principle; the difference in design and installation should be as small as possible because the rotation of the axial axis (3-1) of the connecting piece of the orthogonal axis connecting piece (3) can slightly change the directions of the orthogonal swinging axis (4-2) and the orthogonal axis (7) of the swinging piece during running.

In addition, the damping between the front body (1) and the rear body (2) can be replaced by a torsional damper which is mounted on an axial shaft, and the oscillating piece (4) is not needed.

Mainly as shown in [ fig. 8 ]: the reset spring (5) has the function of keeping the front body (1) and the rear body (2) of the bicycle in a normal position (namely, the axial shaft hole (3-1) of the connecting piece of the orthogonal shaft connecting piece (3) is parallel to the rear shafts (1, 2; namely, parallel to the ground) in a non-riding state; in fact, the reset spring (5) may be: a coil spring (using its pushing or pulling force), or a leaf spring; two ends of the spring are respectively fixed on the front vehicle body (1) and the rear vehicle body (2); especially in the case of using 2 springs: the prestress clamping points (2-10) play a role in limiting the 2 reset elastic sheets (5), so that the 2 reset elastic sheets (5) generate certain prestress, the reset clamping points (2-7) can generate certain holding force at the position of the normal position relation between the front vehicle body (1) and the rear vehicle body (2), when the front vehicle body (1) is twisted and tilted relative to the rear vehicle body (2), the relative twisting displacement only presses one reset elastic sheet (5), and the other reset elastic sheet (5) is blocked by the prestress clamping points (2-10) and cannot counteract the restoring force of the pressed reset elastic sheet (5); this helps the vehicle body to maintain a normal position during parking and low-speed traveling, and the low-speed maneuverability is good.

The power battery (8) and the electric part (9) are components for supplying electric energy and controlling the motor, such as a handle, a saddle, a car lamp, a meter, a decoration piece and the like, and belong to the conventional well-known technology, and are not shown in the figure.