CN209833865U

CN209833865U - Foldable body of vehicle and vehicle

Info

Publication number: CN209833865U
Application number: CN201920322547.1U
Authority: CN
Inventors: 柳宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-02
Filing date: 2019-03-14
Publication date: 2019-12-24
Anticipated expiration: 2029-03-14

Abstract

The utility model belongs to the technical field of vehicle, a collapsible main part and delivery vehicle of delivery vehicle are related to, this delivery vehicle includes collapsible main part, left side drive running gear, right side drive running gear, first box, first driving motor, second box, second driving motor, left turn to running gear, right turn to running gear, third box, first turn to motor, fourth box and second and turn to the motor, collapsible main part includes frame, first shock absorber, second shock absorber, third shock absorber, fourth shock absorber, first lever, second lever, third lever and fourth lever. The utility model discloses a carrier can realize folding the part of outstanding in the frame and accomodate in the frame, has realized carrier's collapsible, and carrier volume after folding reduces by a wide margin, is convenient for hand-carry to can be very convenient get into in narrow and small spaces such as elevator.

Description

Foldable body of vehicle and vehicle

Technical Field

The utility model belongs to the technical field of the vehicle, especially, relate to a collapsible main part and delivery vehicle of delivery vehicle.

Background

The lying bicycle is a bicycle, and as the name suggests, the lying bicycle is a bicycle ridden in a lying way. The most common recumbent vehicles have two wheels and three wheels (there are also recumbent vehicles with four wheels), which have a much longer frame and transmission than ordinary bicycles, and the person is riding on his back on a saddle, with the orientation being grasped by a vertical grip handlebar similar to an airplane joystick.

The recumbent riding posture is undoubtedly very strange compared with the common bicycle, but the recumbent riding posture has excellent aerodynamic performance, and the lower body causes lower wind resistance, so that a great part of physical strength is saved for a rider (particularly in long-distance travel, the saving effect is very obvious). In addition, the waist and the legs of the person are strongly supported by the saddle, so that the force exerting efficiency of the person is higher. Conventional bicycles waste a significant portion of the energy to raise the body.

Of course, before riding the bicycle, the user still needs a period of time to adapt to the bicycle, such as the bicycle has low over-bending speed (easy to overturn, but overcomes the defect that the common bicycle is easy to sideslip), and the bicycle needs to be pedaled by using larger force when climbing an uphill (corresponding to the situation that the braking performance is more excellent when descending a downhill), and the like.

Although recumbent looks so strange, it is a keeper of velocity recordings in human tools, the performance of which differs significantly from that of conventional bicycles. Meanwhile, the bicycle is also a choice of a plurality of long-distance riding enthusiasts, people who ride the bicycle generally praise that the bicycle is comfortable to ride, and symptoms such as lumbago, neck pain, wrist pain and blister at the friction part, which are often caused by a common bicycle, can not appear. Because the frame is low, most recumbent cars are equipped with flagpoles to make them conspicuous. Of course, such vehicles are generally the focus of attention even without a flag pole.

The conventional reclining car generally includes a frame, a driving system, a steering driving system, driving wheels, and steering wheels, where if the driving wheels are front wheels (1 or 2), the steering wheels are rear wheels (1 or 2), and if the driving wheels are rear wheels (1 or 2), the steering wheels are front wheels (1 or 2). The driving system is used for driving the driving wheel to rotate so as to drive the lying vehicle to run. The steering driving system is used for driving the steering wheel to rotate so as to drive the lying vehicle to steer.

The driving system that traveles of current lying car includes parts such as footboard, big sprocket, little sprocket, chain and drive shaft usually, steps on the footboard through the foot and makes big sprocket rotate, will rotate the transmission for little sprocket through the chain, and little sprocket is fixed in the drive shaft, therefore the drive shaft rotates for the lug connection drive wheel rotates on the drive shaft, and then drives the lying car and travel.

The steering driving system of the existing lying vehicle generally comprises a handlebar and a connecting rod mechanism, wherein the connecting rod mechanism is driven to move by controlling the handlebar to rotate, so that a steering wheel rotates, and the lying vehicle is driven to steer.

However, the conventional creeper is very inconvenient to carry, store and enter narrow spaces such as an elevator due to the fact that the conventional creeper is large in size, the whole creeper is difficult to carry (for example, the conventional creeper is difficult to move into the elevator), and the driving wheels and the steering wheels are usually only detachable but not foldable in the conventional mounting mode.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the foldable main body of the carrying tool and the carrying tool are provided aiming at the defects that the existing lying vehicle is large in size, inconvenient to carry, store and enter narrow spaces such as an elevator.

In order to solve the above technical problem, an embodiment of the present invention provides a foldable main body of a vehicle, including a frame, a first damper, a second damper, a third damper, a fourth damper, a first lever, a second lever, a third lever, and a fourth lever;

one end of the first shock absorber is connected to the rack, the other end of the first shock absorber is detachably connected to the first lever, one end of the second shock absorber is connected to the rack, the other end of the second shock absorber is detachably connected to the second lever, one end of the third shock absorber is connected to the rack, the other end of the third shock absorber is detachably connected to the third lever, one end of the fourth shock absorber is connected to the rack, and the other end of the fourth shock absorber is detachably connected to the fourth lever;

a first rotating shaft is arranged on one side, close to the first lever, of the rack, and a first fulcrum which is rotatably connected to the first rotating shaft is arranged on the first lever; a second rotating shaft is arranged on one side, close to the second lever, of the rack, and a second fulcrum which is rotatably connected to the second rotating shaft is arranged on the second lever; a third rotating shaft is arranged on one side, close to the third lever, of the rack, and a third fulcrum which is rotatably connected to the third rotating shaft is arranged on the third lever; and a fourth rotating shaft is arranged on one side, close to the fourth lever, of the rack, and a fourth fulcrum which is rotatably connected to the fourth rotating shaft is arranged on the fourth lever.

On the other hand, the embodiment of the utility model provides a delivery vehicle, including frame, first shock absorber, second shock absorber, third shock absorber, fourth shock absorber, left side drive running gear, right side drive running gear, first lever, first box, first driving motor, second lever, second box, second driving motor, left turn to running gear, right turn to running gear, third lever, third box, first steering motor, fourth lever, fourth box and second steering motor;

one end of the first shock absorber is connected to the frame, the other end of the first shock absorber is detachably connected to the first lever, one end of the second vibration damper is connected to the frame, the other end of the second vibration damper is detachably connected to the second lever, one end of the first lever, which is far away from the frame, is fixedly connected to the first box body, the first driving motor is arranged on the first box body, the output shaft of the first driving motor is connected with the left driving travelling mechanism to drive the left driving travelling mechanism to rotate, one end of the second lever, which is far away from the frame, is fixedly connected to the second box body, the second driving motor is arranged on the second box body, an output shaft of the second driving motor is connected with the right driving travelling mechanism to drive the right driving travelling mechanism to rotate; one end of the third vibration damper is connected to the frame, the other end of the third vibration damper is detachably connected to the third lever, one end of the fourth vibration damper is connected to the frame, the other end of the fourth vibration damper is detachably connected to the fourth lever, one end of the third lever, which is far away from the rack, is fixedly connected to the third box body, the first steering motor is arranged on the third box body, the output shaft of the first steering motor is connected with the left steering travelling mechanism to drive the left steering travelling mechanism to steer, one end of the fourth lever, which is far away from the rack, is fixedly connected to the fourth box body, the second steering motor is arranged on the fourth box body, an output shaft of the second steering motor is connected with the right steering travelling mechanism to drive the right steering travelling mechanism to steer;

The vehicle according to the embodiment of the present invention corresponds to a vehicle of four-wheel type (two driving traveling mechanisms, two steering traveling mechanisms), the other end of the first vibration damper is detachably connected to the first lever, the other end of the second vibration damper is detachably connected to the second lever, the other end of the third vibration damper is detachably connected to the third lever, the other end of the fourth vibration damper is detachably connected to the fourth lever, when the other end of the first shock absorber is detached from the first lever, the whole structure formed by the first lever, the first box body, the first driving motor and the left driving travelling mechanism can rotate around the first rotating shaft in the direction close to the rack, so that the whole structure formed by the first lever, the first box body, the first driving motor and the left driving travelling mechanism can be folded and contained in the inner space of the rack; when the other end of the second shock absorber is detached from the second lever, the whole structure formed by the second lever, the second box body, the second driving motor and the right driving travelling mechanism can rotate around the second rotating shaft in the direction close to the rack, so that the whole structure formed by the second lever, the second box body, the second driving motor and the right driving travelling mechanism can be folded and contained in the inner space of the rack; when the other end of the third shock absorber is detached from the third lever, the whole structure formed by the third lever, the third box body, the first steering motor and the left steering travelling mechanism can rotate around the third rotating shaft in the direction close to the rack, so that the whole structure formed by the third lever, the third box body, the first steering motor and the left steering travelling mechanism can be folded and contained in the inner space of the rack; when the other end of the fourth shock absorber is detached from the fourth lever, the overall structure formed by the fourth lever, the fourth box, the second steering motor and the right steering travelling mechanism can rotate around the fourth rotating shaft in the direction close to the rack, so that the overall structure formed by the fourth lever, the fourth box, the second steering motor and the right steering travelling mechanism can be folded and contained in the inner space of the rack.

Like this, corresponding to the delivery vehicle (front drive after turn to running gear, two drive running gear) of four-wheel form (two turn to running gear, two drive back drives), can realize folding the part of salient in the frame and accomodate in the frame, realized the collapsible of delivery vehicle, the delivery vehicle volume after folding reduces by a wide margin, is convenient for hand-carry to can be very convenient get into narrow and small spaces such as elevator.

In another aspect, an embodiment of the present invention provides a foldable main body of a vehicle, including a frame, a first damper, a second damper, a third damper, a first lever, a second lever, and a third lever;

one end of the first shock absorber is connected to the rack, the other end of the first shock absorber is detachably connected to the first lever, one end of the second shock absorber is connected to the rack, the other end of the second shock absorber is detachably connected to the second lever, one end of the third shock absorber is connected to the rack, and the other end of the third shock absorber is detachably connected to the third lever;

a first rotating shaft is arranged on one side, close to the first lever, of the rack, and a first fulcrum which is rotatably connected to the first rotating shaft is arranged on the first lever; a second rotating shaft is arranged on one side, close to the second lever, of the rack, and a second fulcrum which is rotatably connected to the second rotating shaft is arranged on the second lever; and a third rotating shaft is arranged on one side, close to the third lever, of the rack, and a third fulcrum which is rotatably connected to the third rotating shaft is arranged on the third lever.

In another aspect, an embodiment of the present invention provides a vehicle, including a frame, a first shock absorber, a second shock absorber, a third shock absorber, a left driving traveling mechanism, a right driving traveling mechanism, a first lever, a first box, a first driving motor, a second lever, a second box, a second driving motor, a steering traveling mechanism, a third lever, a third box, and a steering motor;

one end of the first shock absorber is connected to the frame, the other end of the first shock absorber is detachably connected to the first lever, one end of the second vibration damper is connected to the frame, the other end of the second vibration damper is detachably connected to the second lever, one end of the first lever, which is far away from the frame, is fixedly connected to the first box body, the first driving motor is arranged on the first box body, the output shaft of the first driving motor is connected with the left driving travelling mechanism to drive the left driving travelling mechanism to rotate, one end of the second lever, which is far away from the frame, is fixedly connected to the second box body, the second driving motor is arranged on the second box body, an output shaft of the second driving motor is connected with the right driving travelling mechanism to drive the right driving travelling mechanism to rotate; one end of the third shock absorber is connected to the rack, the other end of the third shock absorber is detachably connected to the third lever, one end of the third lever, which is far away from the rack, is fixedly connected to the third box body, the steering motor is mounted on the third box body, and an output shaft of the steering motor is connected with the steering travelling mechanism to drive the steering travelling mechanism to steer;

The vehicle according to the embodiment of the present invention corresponds to a three-wheel type (two driving traveling mechanisms, one steering traveling mechanism), the other end of the first vibration damper is detachably connected to the first lever, the other end of the second vibration damper is detachably connected to the second lever, the other end of the third vibration damper is detachably connected to the third lever, when the other end of the first shock absorber is detached from the first lever, the whole structure formed by the first lever, the first box body, the first driving motor and the left driving travelling mechanism can rotate around the first rotating shaft in the direction close to the rack, so that the whole structure formed by the first lever, the first box body, the first driving motor and the left driving travelling mechanism can be folded and contained in the inner space of the rack; when the other end of the second shock absorber is detached from the second lever, the whole structure formed by the second lever, the second box body, the second driving motor and the right driving travelling mechanism can rotate around the second rotating shaft in the direction close to the rack, so that the whole structure formed by the second lever, the second box body, the second driving motor and the right driving travelling mechanism can be folded and contained in the inner space of the rack; when the other end of the third shock absorber is detached from the third lever, the whole structure formed by the third lever, the third box body, the steering motor and the steering travelling mechanism can rotate around the third rotating shaft in the direction close to the rack, so that the whole structure formed by the third lever, the third box body, the steering motor and the steering travelling mechanism can be folded and contained in the inner space of the rack.

Like this, corresponding to the delivery vehicle (the front drive turns to after or turns to back the drive) of tricycle form (two drive running gear, one), can realize folding the part that will salient in the frame and accomodate in the frame, realized the collapsible of delivery vehicle, the delivery vehicle volume after folding reduces by a wide margin, is convenient for hand-carry to can be very convenient get into narrow and small spaces such as elevator.

In another aspect, an embodiment of the present invention provides a vehicle, including a frame, a first shock absorber, a second shock absorber, a third shock absorber, a driving traveling mechanism, a first lever, a first box, a driving motor, a second lever, a second box, a left steering traveling mechanism, a right steering traveling mechanism, a third lever, a third box, a first steering motor, and a second steering motor;

one end of the first shock absorber is connected to the rack, the other end of the first shock absorber is detachably connected to the first lever, one end, far away from the rack, of the first lever is fixedly connected to the first box body, the driving motor is installed on the first box body, and an output shaft of the driving motor is connected with the driving travelling mechanism to drive the driving travelling mechanism to rotate; one end of the second vibration damper is connected to the frame, the other end of the second vibration damper is detachably connected to the second lever, one end of the third vibration damper is connected to the frame, the other end of the third vibration damper is detachably connected to the third lever, one end of the second lever, which is far away from the frame, is fixedly connected to the second box body, the first steering motor is arranged on the second box body, the output shaft of the first steering motor is connected with the left steering travelling mechanism to drive the left steering travelling mechanism to steer, one end of the third lever, which is far away from the rack, is fixedly connected to the third box body, the second steering motor is arranged on the third box body, an output shaft of the second steering motor is connected with the right steering travelling mechanism to drive the right steering travelling mechanism to steer;

According to the utility model discloses a delivery vehicle of three-wheeled form (a driving running gear, two steering running gear), the other end detachably of first shock absorber is connected on the first lever, the other end detachably of second shock absorber is connected on the second lever, the other end detachably of third shock absorber is connected on the third lever, when the other end of first shock absorber is pulled apart from the first lever, the overall structure that first lever, first box, driving motor and driving running gear constitute can be around the rotation of first axis of rotation direction that is close to the frame, and then make the overall structure that first lever, first box, driving motor and driving running gear constitute can fold and hold in the inner space of frame; when the other end of the second shock absorber is detached from the second lever, the whole structure formed by the second lever, the second box body, the first steering motor and the left steering travelling mechanism can rotate around the second rotating shaft in the direction close to the rack, so that the whole structure formed by the second lever, the second box body, the first steering motor and the left steering travelling mechanism can be folded and contained in the inner space of the rack; when the other end of the third shock absorber is detached from the third lever, the overall structure formed by the third lever, the third box body, the second steering motor and the right steering travelling mechanism can rotate around the third rotating shaft in the direction close to the rack, so that the overall structure formed by the third lever, the third box body, the second steering motor and the right steering travelling mechanism can be folded and contained in the inner space of the rack.

Like this, corresponding to the delivery vehicle (front drive after turn to or preceding back drive) of tricycle form (a drive running gear, two turn to running gear), can realize folding the part that will salient in the frame and accomodate in the frame, realized the collapsible of delivery vehicle, the delivery vehicle volume after folding reduces by a wide margin, is convenient for hand-carry to can be very convenient get into narrow and small spaces such as elevator.

Drawings

Fig. 1 is a perspective view of a vehicle according to a first embodiment of the present invention;

fig. 2 is a schematic view of a first embodiment of the present invention showing a folded vehicle;

fig. 3 is a perspective view of a vehicle provided by a second embodiment of the present invention;

fig. 4 is a schematic view of a second embodiment of the present invention showing a folded vehicle;

fig. 5 is a perspective view of a vehicle provided by a third embodiment of the present invention;

fig. 6 is a schematic view of a third embodiment of the present invention showing a folded vehicle;

FIG. 7 is a block diagram of an active lean drive system of a vehicle according to a first embodiment of the present invention;

FIG. 8 is a schematic structural view of a motor spring damper of a vehicle according to a first embodiment of the present invention;

FIG. 9 is a schematic diagram of a first control circuit of the vehicle provided by the first embodiment of the present invention;

fig. 10 is a schematic diagram of a second control circuit of the vehicle according to the first embodiment of the present invention.

The reference numerals in the specification are as follows:

1. a frame; 2. a first shock absorber; 3. a second shock absorber; 4. a third damper; 5. a fourth vibration damper; 6. a left drive wheel; 7. a right drive wheel; 8. a first lever; 9. a first case; 10. a first drive motor; 11. a second lever; 12. a second case; 13. a second drive motor; 14. a left steering wheel; 15. a right steering wheel; 16. a third lever; 17. a third box body; 18. a first steering motor; 19. a fourth box body; 20. a second steering motor; 21. a first rotating shaft; 22. a first fulcrum; 23. a second fulcrum; 24. a third rotation axis; 25. a third fulcrum; 26. a fourth fulcrum; 27. a steering wheel; 28. a steering motor; 29. a transfer bracket; 30. a first transfer support; 31. a second adaptor bracket; 32. a fourth lever.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

First embodiment

As shown in fig. 1 and 2, the utility model discloses a delivery vehicle that the first embodiment provided, for four-wheel form, including frame 1, first shock absorber 2, second shock absorber 3, third shock absorber 4, fourth shock absorber 5, left drive wheel 6, right drive wheel 7, first lever 8, first box 9, first driving motor 10, second lever 11, second box 12, second driving motor 13, left directive wheel 14, right directive wheel 15, third lever 16, third box 17, first steering motor 18, fourth lever 32, fourth box 19 and second steering motor 20. The frame 1, the first damper 2, the second damper 3, the third damper 4, the fourth damper 5, the first lever 8, the second lever 11, the third lever 16 and the fourth lever 32 form a foldable body of the vehicle.

One end of the first damper 2 is connected to the frame 1, the other end of the first damper 2 is detachably connected to the first lever 8, one end of the second damper 3 is connected to the frame 1, the other end of the second damper 3 is detachably connected to the second lever 11, one end of the first lever 8 far away from the frame 1 is fixedly connected to the first box body 9, the first driving motor 10 is installed on the first box 9, an output shaft of the first driving motor 10 is connected with the left driving wheel 6 to drive the left driving wheel 6 to rotate, one end of the second lever 11 far away from the frame 1 is fixedly connected to the second box body 12, the second driving motor 13 is mounted on the second box 12, and an output shaft of the second driving motor 13 is connected with the right driving wheel 7 to drive the right driving wheel 7 to rotate; one end of the third damper 4 is connected to the frame 1, the other end of the third damper 4 is detachably connected to the third lever 16, one end of the fourth damper 5 is connected to the frame 1, the other end of the fourth damper 5 is detachably connected to the fourth lever 32, one end of the third lever 16 far away from the frame 1 is fixedly connected to the third box 17, the first steering motor 18 is installed on the third box 17, an output shaft of the first steering motor 18 is connected with the left steering wheel 14 to drive the left steering wheel 14 to steer, one end of the fourth lever 32 far away from the machine frame 1 is fixedly connected to the fourth box 19, the second steering motor 20 is mounted on the fourth box 19, and an output shaft of the second steering motor 20 is connected with the right steering wheel 15 to drive the right steering wheel 15 to steer.

A first rotating shaft 21 is arranged on one side, close to the first lever 8, of the frame 1, and a first supporting point 22 which is rotatably connected to the first rotating shaft 21 is arranged on the first lever 8; a second rotating shaft is arranged on one side, close to the second lever 11, of the rack 1, and a second fulcrum 23 which is rotatably connected to the second rotating shaft is arranged on the second lever 11; a third rotating shaft 24 is arranged on one side of the rack 1 close to the third lever 16, and a third fulcrum 25 rotatably connected to the third rotating shaft 24 is arranged on the third lever 16; a fourth rotating shaft is arranged on one side of the frame 1 close to the fourth lever 32, and a fourth fulcrum 26 rotatably connected to the fourth rotating shaft is arranged on the fourth lever 32.

The first lever 8 is divided into a first long arm and a first short arm by the first fulcrum 22, the outer end of the first long arm is fixedly connected to the first box 9, and the length of the first long arm is greater than that of the first short arm; the second lever 11 is divided into a second long arm and a second short arm by the second fulcrum 23, the outer end of the second long arm is fixedly connected to the second box 12, and the length of the second long arm is greater than that of the second short arm; the third lever 16 is divided into a third long arm and a third short arm by the third fulcrum 25, the outer end of the third long arm is fixedly connected to the third box 17, and the length of the third long arm is greater than that of the third short arm; the fourth lever 32 is divided into a fourth long arm and a fourth short arm by the fourth fulcrum 26, the outer end of the fourth long arm is fixedly connected to the fourth box 19, and the length of the fourth long arm is greater than that of the fourth short arm. The first, second, third, and fourth short arms may be 0 in length.

The first rotation shaft 21 and the second rotation shaft may be the same shaft, or may be two independent shafts that are rotatably engaged with the first fulcrum 22 and the second fulcrum 23, respectively. The third rotation shaft 24 and the fourth rotation shaft may be the same shaft, or may be two independent shafts that are rotatably engaged with the third fulcrum 25 and the fourth fulcrum 26, respectively.

The first lever 8, the second lever 11, the third lever 16, and the fourth lever 32 extend in the front-rear direction of the frame 1, and the first rotation shaft 21, the second rotation shaft, the third rotation shaft 24, and the fourth rotation shaft extend in the left-right direction of the frame 1.

A first gear set is arranged in the first box body 9, an output shaft of the first driving motor 10 is connected with an input end of the first gear set, and an output end of the first gear set is connected with the left driving wheel 6. In one embodiment, the first gear set comprises two orthogonally meshing bevel gears, one of which is fixed to the output shaft of the first drive motor 10 and the other of which is fixed to the axle of the left drive wheel 6.

A second gear set is arranged in the second box body 12, an output shaft of the second driving motor 13 is connected with an input end of the second gear set, and an output end of the second gear set is connected with the right driving wheel 7. In one embodiment, the second gear set comprises two orthogonally meshing bevel gears, one of which is fixed to the output shaft of the second drive motor 13 and the other of which is fixed to the axle of the right drive wheel 7.

A third gear set is arranged in the third box 17, an output shaft of the first steering motor 18 is connected with an input end of the third gear set, and an output end of the third gear set is connected with the left steering wheel 14. In one embodiment, the third gear set includes two gears (spur gears or helical gears) in coplanar engagement, one of which is fixed to the output shaft of the first steering motor 18 and the other of which is connected to the axle of the left steering wheel 14. Preferably, in the third gear set, the upper and lower ends of the gear connected to the axle of the left steering wheel 14 are connected to a first adapter bracket 30, and the first adapter bracket 30 is fixed to the axle of the left steering wheel 14. Thus, the first steering motor 18 rotates the first steering bracket 30 and the left steering wheel 14 integrally through the third gear set.

A fourth gear set is arranged in the fourth box 19, an output shaft of the second steering motor 20 is connected with an input end of the fourth gear set, and an output end of the fourth gear set is connected with the right steering wheel 15. In one embodiment, the fourth gear set includes two gears (spur gear or helical gear) in coplanar engagement, one of which is fixed to the output shaft of the second steering motor 20, and the other of which is connected to the axle of the right steering wheel 15. Preferably, in the fourth gear set, the upper and lower ends of a gear connected to the axle of the right steering wheel 15 are connected to a second adapter bracket 31, and the second adapter bracket 31 is fixed to the axle of the right steering wheel 15. Thus, the second steering motor 20 integrally rotates the second adaptor bracket 31 and the right steering wheel 15 through the fourth gear set.

When the other end of the first damper 2 is detached from the first lever 8, the entire structure formed by the first lever 8, the first box 9, the first driving motor 10 and the left driving wheel 6 can rotate around the first rotating shaft 21 in a direction approaching the rack 1, so that the entire structure formed by the first lever 8, the first box 9, the first driving motor 10 and the left driving wheel 6 can be folded and accommodated in the internal space of the rack 1; when the other end of the second damper 3 is detached from the second lever 11, the entire structure formed by the second lever 11, the second box 12, the second driving motor 13 and the right driving wheel 7 can rotate around the second rotating shaft in a direction approaching the rack 1, so that the entire structure formed by the second lever 11, the second box 12, the second driving motor 13 and the right driving wheel 7 can be folded and accommodated in the internal space of the rack 1; when the other end of the third damper 4 is detached from the third lever 16, the entire structure of the third lever 16, the third box 17, the first steering motor 18, and the left steering wheel 14 can rotate around the third rotation shaft 24 in a direction approaching the rack 1, so that the entire structure of the third lever 16, the third box 17, the first steering motor 18, and the left steering wheel 14 can be folded and accommodated in the internal space of the rack 1; when the other end of the fourth damper 5 is detached from the fourth lever 32, the entire structure formed by the fourth lever 32, the fourth box 19, the second steering motor 20, and the right steering wheel 15 can rotate around the fourth rotation axis in a direction approaching the rack 1, so that the entire structure formed by the fourth lever 32, the fourth box 19, the second steering motor 20, and the right steering wheel 15 can be folded and accommodated in the internal space of the rack 1.

Like this, can realize folding the part that outstanding delivery vehicle user state in frame 1 and accomodate in frame 1, realized the collapsible of delivery vehicle, the delivery vehicle volume after folding reduces by a wide margin, is convenient for hand-carry to can be very convenient get into in narrow and small spaces such as elevator. The folded state of the carrier is shown in figure 2.

In the first embodiment, the frame 1 is a frame structure formed by welding a plurality of tubular beams. The bottom of the frame 1 is fully open for folding and the top of the frame 1 can be provided with seats.

In the first embodiment, the driving wheels are front wheels, and the steering wheels are rear wheels, so that front-driving rear-steering is realized.

In the first embodiment, it is more preferable that one end of the first damper 2 is hinged to the frame 1, the other end of the first damper 2 is hinged to the first lever 8, and the distance from the hinge point of the first damper 2 and the first lever 8 to the first fulcrum 22 is smaller than the distance from the hinge point of the first damper 2 and the first lever 8 to the other end (wheel end) of the first lever 8. Similarly, one end of the second shock absorber 3 is hinged on the frame 1, the other end of the second shock absorber 3 is hinged on the second lever 11, and the distance from the hinge point of the second shock absorber 3 and the second lever 11 to the second fulcrum 23 is smaller than the distance from the hinge point of the second shock absorber 3 and the second lever 11 to the other end (wheel end) of the second lever 11. Therefore, the driving wheel can greatly jump through the lever action of the first lever 8 and the second lever 11, so that the frame 1 can only jump up and down with a small amplitude, and the riding comfort of the carrier is improved.

In the first embodiment, it is more preferable that one end of the third damper 4 is hinged to the frame 1, the other end of the third damper 4 is hinged to the third lever 16, and a distance from a hinge point of the third damper 4 and the third lever 16 to the third fulcrum 25 is smaller than a distance from a hinge point of the third damper 4 and the third lever 16 to the other end (wheel end) of the third lever 16. Similarly, one end of the fourth damper 5 is hinged to the frame 1, the other end of the fourth damper 5 is hinged to the fourth lever 32, and the distance from the hinge point of the fourth damper 5 and the fourth lever 32 to the fourth fulcrum 26 is smaller than the distance from the hinge point of the fourth damper 5 and the fourth lever 32 to the other end (wheel end) of the fourth lever 32. Thus, the steering wheel has larger jump through the lever action of the third lever 16 and the fourth lever 32, so that the frame 1 has smaller vertical jump, and the riding comfort of the carrier is improved.

In some modified embodiments of the first embodiment, the driving wheel can also be a rear wheel, and the steering wheel is a front wheel, so that front-to-rear driving is realized.

In some modified embodiments of the first embodiment, the dampers (the first damper 2, the second damper 3, the third damper 4, the fourth damper 5) and the corresponding levers (the first lever 8, the second lever 11, the third lever 16, the fourth lever 32) may also be interchanged in position. That is, one end of the damper is connected below the frame 1, the other end of the damper is connected to a corresponding lever, and the lever is connected above the frame 1.

Furthermore, as shown in fig. 7, the vehicle further comprises an active tilt drive system comprising:

a speed detection device 100 for detecting a traveling speed of the vehicle;

a steering angle detection device 200 for detecting a steering angle of the vehicle;

the tilt control device 300 is used for controlling the frame 1 to present a posture of low left and high right when the speed detection device 100 detects that the running speed of the vehicle is greater than a preset value and the corner detection device 200 detects that the left steering angle of the vehicle exceeds a first preset steering angle; when the speed detection device 100 detects that the running speed of the vehicle is greater than a preset value and the turning angle detection device 200 detects that the right steering angle of the vehicle exceeds a second preset steering angle, the tilt control device 300 controls the vehicle frame 1 to assume a posture of high left and low right.

In the first embodiment, the tilt control device 300 includes the control mechanism 301, the first damper 2, the second damper 3, the third damper 4, and the fourth damper 5.

The first shock absorber 2 is connected between the vehicle frame 1 and the left driving wheel 6, the second shock absorber 3 is connected between the vehicle frame 1 and the right driving wheel 7, the third shock absorber 4 is connected between the vehicle frame 1 and the left steering wheel 14, and the fourth shock absorber 5 is connected between the vehicle frame 1 and the right steering wheel 15.

When the speed detection device 100 detects that the running speed of the vehicle is greater than a preset value and the corner detection device 200 detects that the left steering angle of the vehicle exceeds a first preset steering angle, the control mechanism 301 controls the first damper 2 and the third damper 4 to compress and controls the second damper 3 and the fourth damper 5 to stretch, so that the frame 1 assumes a posture with a lower left and a higher right, and at the moment, the compression speed of the first damper 2 and the third damper 4 and the stretching speed of the second damper 3 and the fourth damper 5 are both in direct proportion to the running speed and the steering angle of the vehicle.

When the speed detection device 100 detects that the running speed of the vehicle is greater than a preset value and the corner detection device 200 detects that the right steering angle of the vehicle exceeds a second preset steering angle, the control mechanism 301 controls the first damper 2 and the third damper 4 to stretch and controls the second damper 3 and the fourth damper 5 to compress, so that the frame 1 assumes a posture of high left and low right, and at the moment, the stretching speed of the first damper 2 and the third damper 4 and the compressing speed of the second damper 3 and the fourth damper 5 are both in direct proportion to the running speed and the steering angle of the vehicle.

Here, the preset value of the running speed is a value greater than 0, for example, 5 km/h. The first predetermined steering angle is an angle greater than 0, for example 5 degrees. The second predetermined steering angle is an angle greater than 0, for example 5 degrees. The first preset steering angle and the second preset steering angle may be the same or different.

In a first embodiment, each of the first damper 2, the second damper 3, the third damper 4, and the fourth damper 5 is a motor spring damper 400 shown in fig. 8, the motor spring damper 400 includes a damper cylinder 401, a damper spring 402, a damper post 403, a motor 404, a threaded rod 405, a threaded rod nut slider 406, and a slide rail 407, the damper spring 402, the damper post 403, the motor 404, the threaded rod 405, the threaded rod nut slider 406, and the slide rail 407 are disposed in the damper cylinder 401, the slide rail 407 is fixedly disposed on an inner wall of the damper cylinder 401, a housing of the motor 404 is slidably disposed in the slide rail 407, the threaded rod 405 is connected to an output shaft of the motor 404, the threaded rod nut slider 406 is in threaded engagement with the threaded rod 405, an outer surface of the threaded rod nut slider 406 is in sliding contact with the slide rail 407, and the slide rail 407 limits rotation of the threaded rod nut slider 406, the damping column 403 is connected to the threaded rod and nut slider 406, one end of the damping column 403 extends out of the damping cylinder 401 and is connected to the frame 1, one end of the damping spring 402 is connected to the inner end of the motor 404, and the other end of the damping spring 402 is connected to the inner side of the bottom end of the damping cylinder 401.

The outer sides of the bottom ends of the damping cylinders 401 are connected to the corresponding levers, that is, the outer side of the bottom end of the damping cylinder 401 of the first damper 2 is connected to the first lever 8, the outer side of the bottom end of the damping cylinder 401 of the second damper 3 is connected to the second lever 11, the outer side of the bottom end of the damping cylinder 401 of the third damper 4 is connected to the third lever 16, and the outer side of the bottom end of the damping cylinder 401 of the fourth damper 5 is connected to the fourth lever 32.

When the motor 404 rotates forward, the threaded rod 405 rotates to push the threaded rod nut slide block 406 and the damping post 403 to slide outwards along the slide rail 407. When the motor 404 rotates in the reverse direction, the threaded rod 405 pulls the threaded rod nut slide 406 and the shock absorbing post 403 to slide inward along the slide rail 407. Further, the retractable function of the motor spring damper 400 is realized by the forward and reverse rotation of the motor 404.

When the vibration damping column 403 does not need to move inside and outside, the vibration damping column 403 and the threaded rod nut slider 406 return to the original position under the action of the vibration damping spring 402, and when the motor 404 is turned off, the whole body formed by the vibration damping column 403, the motor 404, the threaded rod 405 and the threaded rod nut slider 406 can freely slide back and forth on the sliding rail 407 under the support of the vibration damping spring 402. Such that the corresponding damper itself is not limited in its function when the motor 404 is on or off.

The control mechanism 301 includes a single chip microcomputer and a motor control system, the single chip microcomputer is respectively connected with the speed detection device 100 and the rotation angle detection device 200 in a communication manner, and sends a control instruction to the motor control system according to the detection results of the speed detection device 100 and the rotation angle detection device 200. The motor control system comprises a first control circuit and a second control circuit, wherein the first control circuit and the second control circuit can be integrated on a single chip microcomputer.

The speed detection means 100 may be a speed sensor arranged on the axle of the left driving wheel 6 or the axle of the right driving wheel 7.

The turning angle detecting device 200 may be a hall sensor disposed on the left steered wheel 14 or the right steered wheel 15.

Hereinafter, for the sake of distinction, the motors 404 of the first, second, third, and fourth dampers 2, 3, 4, and 5 are simply referred to as motor M1, motor M2, motor M3, and motor M4, respectively.

As shown in fig. 9, the first control circuit includes a first power source D1, a first switch K1, a second switch K2, a third switch K3, a fourth switch K4, a first variable resistor R1, a second variable resistor R2, a third variable resistor R3, and a fourth variable resistor R4, the first variable resistor R1, the second variable resistor R2, and the motor M1 of the first shock absorber 2 are connected in series to form a first branch, the third variable resistor R3, the fourth variable resistor R4, and the motor M3 of the third shock absorber 3 are connected in series to form a second branch, the first branch is connected in parallel with the second branch, the positive pole of the first power source D1 is connected to one end of the first switch 573k 5 and one end of the third switch K4623, the negative pole of the first power source D1 is connected to one end of the second switch K2 and one end of the fourth switch K6342, the other end of the first switch D4 is connected between the first branch and the other end of the first switch K599 and the second branch, the other end of the second switch K2 and the other end of the third switch K3 are connected between the other end of the first branch and the other end of the second branch.

As shown in fig. 10, the second control circuit includes a second power source D2, a fifth switch K5, a sixth switch K6, a seventh switch K7, an eighth switch K8, a fifth variable resistor R5, a sixth variable resistor R6, a seventh variable resistor R7, and an eighth variable resistor R8, the fifth variable resistor R5, the sixth variable resistor R6, and the motor M2 of the second shock absorber 3 are connected in series to form a third branch, the seventh variable resistor R7, the eighth variable resistor R8, and the motor M4 of the fourth shock absorber 5 are connected in series to form a fourth branch, the third branch is connected in parallel with the fourth branch, the positive pole of the second power source D2 is connected to one end of the fifth switch 573k 5 and one end of the seventh switch K7, the negative pole of the second power source D2 is connected to one end of the sixth switch K6 and one end of the eighth switch K6342, the negative pole of the second power source D2 is connected between one end of the fifth switch K8 and one end of the fourth switch K599, the other end of the sixth switch K6 and the other end of the seventh switch K7 are connected between the other end of the third branch and the other end of the fourth branch.

The resistances of the first variable resistor R1, the third variable resistor R3, the fifth variable resistor R5 and the seventh variable resistor R7 are inversely proportional to the traveling speed of the vehicle. That is, the single chip microcomputer adjusts the first variable resistor R1, the third variable resistor R3, the fifth variable resistor R5, and the seventh variable resistor R7 to smaller resistance values as the vehicle traveling speed detected by the speed detection device 100 increases. Thus, the larger the current passing through motor M1, motor M2, motor M3 and motor M4, the larger the output power of motor M1, motor M2, motor M3 and motor M4.

The resistances of the second variable resistor R2, the fourth variable resistor R4, the sixth variable resistor R6 and the eighth variable resistor R8 are inversely proportional to the steering angle. That is, the larger the steering angle of the vehicle detected by the steering angle detecting device 200 is, the smaller the resistances of the second variable resistor R2, the fourth variable resistor R4, the sixth variable resistor R6, and the eighth variable resistor R8 are adjusted by the one-chip microcomputer. Thus, the larger the current passing through motor M1, motor M2, motor M3 and motor M4, the larger the output power of motor M1, motor M2, motor M3 and motor M4.

When the steering angle detection device 200 detects that the left steering angle of the vehicle does not exceed a first preset steering angle or when the steering angle detection device 200 detects that the right steering angle of the vehicle does not exceed a second preset steering angle during the running of the vehicle, the motor M1 of the first shock absorber, the motor M2 of the second shock absorber, the motor M3 of the third shock absorber and the motor M4 of the fourth shock absorber do not operate.

When the speed detection device 100 detects that the running speed of the vehicle is greater than the preset value and the rotation angle detection device 200 detects that the left steering angle of the vehicle exceeds the first preset steering angle, the motor M1 of the first shock absorber and the motor M3 of the third shock absorber rotate in reverse to compress the first shock absorber 2 and the third shock absorber 4, and the motor M2 of the second shock absorber and the motor M4 of the fourth shock absorber rotate in forward to stretch the second shock absorber 3 and the fourth shock absorber 5.

When the speed detection device 100 detects that the running speed of the vehicle is greater than the preset value and the rotation angle detection device 200 detects that the steering angle of the vehicle to the right exceeds the second preset steering angle, the motor M1 of the first shock absorber and the motor M3 of the third shock absorber rotate forward to stretch the first shock absorber 2 and the third shock absorber 4, and the motor M2 of the second shock absorber and the motor M4 of the fourth shock absorber rotate backward to compress the second shock absorber 3 and the fourth shock absorber 5.

The forward rotation and reverse rotation of the motor M1 and the motor M3 are realized as follows:

when the first switch K1 and the second switch K2 are connected, the third switch K3 and the fourth switch K4 are disconnected, the current passes through the motor M1 and the motor M3 in the forward direction, and the motor M1 and the motor M3 rotate in the forward direction; when the third switch K3 and the fourth switch K4 are connected, the first switch K1 and the second switch K2 are disconnected, the current reversely passes through the motor M1 and the motor M3, and the motor M1 and the motor M3 reversely rotate.

The forward rotation and reverse rotation of the motor M2 and the motor M4 are realized as follows:

when the fifth switch K5 and the sixth switch K6 are connected, the seventh switch K7 and the eighth switch K8 are disconnected, the current passes through the motor M2 and the motor M4 in the forward direction, and the motor M2 and the motor M4 rotate in the forward direction; when the seventh switch K7 and the eighth switch K8 are connected, the fifth switch K5 and the sixth switch K6 are disconnected, the current reversely passes through the motor M2 and the motor M4, and the motor M2 and the motor M4 reversely rotate.

The active tilt driving system of the first embodiment actively controls the frame 1 to tilt left or right through the active tilt driving system when the vehicle is steered, so that the frame 1 can be kept stable when the vehicle is steered, and the vehicle is prevented from rolling over.

In some modifications of the first embodiment, the damper may be interchanged with the corresponding lever. At this time, when the speed detection device 100 detects that the traveling speed of the vehicle is greater than the preset value and the steering angle detection device 200 detects that the leftward steering angle of the vehicle exceeds the first preset steering angle, or when the speed detection device 100 detects that the traveling speed of the vehicle is greater than the preset value and the steering angle detection device 200 detects that the rightward steering angle of the vehicle exceeds the second preset steering angle, the telescopic direction of the shock absorber is opposite to that before the interchange position and that after the interchange position in the same steering direction.

Second embodiment

As shown in fig. 3 and 4, the vehicle according to the second embodiment of the present invention is in a four-wheel form, and is different from the first embodiment in that levers (the first lever 8, the second lever 11, the third lever 16, and the fourth lever 32) and wheels (the left driving wheel 6, the right driving wheel 7, the left steering wheel 14, and the right steering wheel 15) are disposed on the left and right sides of the frame 1. The first lever 8, the second lever 11, the third lever 16, and the fourth lever 32 extend in the left-right direction of the frame 1, the first lever 8 and the third lever 16 are located on the left side of the frame 1, the second lever 11 and the fourth lever 32 are located on the right side of the frame 1, and the first rotation axis 21, the second rotation axis, the third rotation axis 24, and the fourth rotation axis extend in the front-rear direction of the frame 1. At this time, the folding direction of the lever is the left-right direction. The folded state of the vehicle of the second embodiment is shown in figure 4.

Third embodiment

As shown in fig. 5 and 6, the third embodiment of the present invention provides a vehicle in three wheels, which includes a frame 1, a first damper 2, a second damper 3, a third damper 4, a left driving wheel 6, a right driving wheel 7, a first lever 8, a first box 9, a first driving motor 10, a second lever 11, a second box 12, a second driving motor 13, a steering wheel 27, a third lever 16, a third box 17, and a steering motor 28. Wherein, the frame 1, the first damper 2, the second damper 3, the third damper 4, the first lever 8, the second lever 11 and the third lever 16 form a foldable body of the vehicle.

One end of the first damper 2 is connected to the frame 1, the other end of the first damper 2 is detachably connected to the first lever 8, one end of the second damper 3 is connected to the frame 1, the other end of the second damper 3 is detachably connected to the second lever 11, one end of the first lever 8 far away from the frame 1 is fixedly connected to the first box body 9, the first driving motor 10 is installed on the first box 9, an output shaft of the first driving motor 10 is connected with the left driving wheel 6 to drive the left driving wheel 6 to rotate, one end of the second lever 11 far away from the frame 1 is fixedly connected to the second box body 12, the second driving motor 13 is mounted on the second box 12, and an output shaft of the second driving motor 13 is connected with the right driving wheel 7 to drive the right driving wheel 7 to rotate; one end of the third damper 4 is connected to the frame 1, the other end of the third damper 4 is detachably connected to the third lever 16, one end of the third lever 16 away from the frame 1 is fixedly connected to the third box 17, the steering motor 28 is mounted on the third box 17, and an output shaft of the steering motor 28 is connected to the steering wheel 27 to drive the steering wheel 27 to steer.

A first rotating shaft 21 is arranged on one side, close to the first lever 8, of the frame 1, and a first supporting point 22 which is rotatably connected to the first rotating shaft 21 is arranged on the first lever 8; a second rotating shaft is arranged on one side, close to the second lever 11, of the rack 1, and a second fulcrum 23 which is rotatably connected to the second rotating shaft is arranged on the second lever 11; a third rotating shaft 24 is arranged on one side of the frame 1 close to the third lever 16, and a third fulcrum 25 rotatably connected to the third rotating shaft 24 is arranged on the third lever 16.

The first lever 8 is divided into a first long arm and a first short arm by the first fulcrum 22, the outer end of the first long arm is fixedly connected to the first box 9, and the length of the first long arm is greater than that of the first short arm; the second lever 11 is divided into a second long arm and a second short arm by the second fulcrum 23, the outer end of the second long arm is fixedly connected to the second box 12, and the length of the second long arm is greater than that of the second short arm; the third lever 16 is divided into a third long arm and a third short arm by the third fulcrum 25, the outer end of the third long arm is fixedly connected to the third box 17, and the length of the third long arm is greater than that of the third short arm. The first, second, and third short arms may be 0 in length.

The first rotation shaft 21 and the second rotation shaft may be the same shaft, or may be two independent shafts that are rotatably engaged with the first fulcrum 22 and the second fulcrum 23, respectively.

The first lever 8, the second lever 11, and the third lever 16 extend in the front-rear direction of the frame 1, and the first rotation shaft 21, the second rotation shaft, and the third rotation shaft 24 extend in the left-right direction of the frame 1.

A third gear set is arranged in the third box 17, an output shaft of the steering motor 28 is connected with an input end of the third gear set, and an output end of the third gear set is connected with the steering wheel 27. In one embodiment, the third gear set comprises two gears (spur or helical) in coplanar engagement, one of which is fixed to the output shaft of the steering motor and the other of which is connected to the axle of the steering wheel 27. Preferably, in the third gear set, the upper end and the lower end of a gear connected with the axle of the steering wheel 27 are connected with a switching bracket 29, and the switching bracket 29 is fixed with the axle of the steering wheel 27. Thus, the steering motor 28 rotates the switching bracket 29 and the steering wheel 27 integrally through the third gear train.

When the other end of the first damper 2 is detached from the first lever 8, the entire structure formed by the first lever 8, the first box 9, the first driving motor 10 and the left driving wheel 6 can rotate around the first rotating shaft 21 in a direction approaching the rack 1, so that the entire structure formed by the first lever 8, the first box 9, the first driving motor 10 and the left driving wheel 6 can be folded and accommodated in the internal space of the rack 1; when the other end of the second damper 3 is detached from the second lever 11, the entire structure formed by the second lever 11, the second box 12, the second driving motor 13 and the right driving wheel 7 can rotate around the second rotating shaft in a direction approaching the rack 1, so that the entire structure formed by the second lever 11, the second box 12, the second driving motor 13 and the right driving wheel 7 can be folded and accommodated in the internal space of the rack 1; when the other end of the third damper 4 is detached from the third lever 16, the entire structure of the third lever 16, the third box 17, the steering motor 28, and the steering wheel 27 can rotate around the third rotation shaft 24 in a direction approaching the rack 1, so that the entire structure of the third lever 16, the third box 17, the steering motor, and the steering wheel can be folded and accommodated in the internal space of the rack 1.

Like this, can realize folding the part that outstanding delivery vehicle user state in frame 1 and accomodate in frame 1, realized the collapsible of delivery vehicle, the delivery vehicle volume after folding reduces by a wide margin, is convenient for hand-carry to can be very convenient get into in narrow and small spaces such as elevator. The folded state of the carrier is shown in figure 6.

In the third embodiment, the driving wheels are front wheels, and the steering wheels are rear wheels, so that front-driving rear-steering is realized.

In the third embodiment, it is more preferable that one end of the first damper 2 is hinged to the frame 1, the other end of the first damper 2 is hinged to the first lever 8, and the distance from the hinge point of the first damper 2 and the first lever 8 to the first fulcrum 22 is smaller than the distance from the hinge point of the first damper 2 and the first lever 8 to the other end (wheel end) of the first lever 8. Similarly, one end of the second shock absorber 3 is hinged on the frame 1, the other end of the second shock absorber 3 is hinged on the second lever 11, and the distance from the hinge point of the second shock absorber 3 and the second lever 11 to the second fulcrum 23 is smaller than the distance from the hinge point of the second shock absorber 3 and the second lever 11 to the other end (wheel end) of the second lever 11. Therefore, the driving wheel can greatly jump through the lever action of the first lever 8 and the second lever 11, so that the frame 1 can only jump up and down with a small amplitude, and the riding comfort of the carrier is improved.

In the third embodiment, it is more preferable that one end of the third damper 4 is hinged to the frame 1, the other end of the third damper 4 is hinged to the third lever 16, and a distance from a hinge point of the third damper 4 and the third lever 16 to the third fulcrum 25 is smaller than a distance from a hinge point of the third damper 4 and the third lever 16 to the other end (wheel end) of the third lever 16. Thus, the steering wheel 27 can jump up and down only in a small range through the lever action of the third lever 16, and the riding comfort of the carrier is improved.

In some modified embodiments of the third embodiment, the dampers (the first damper 2, the second damper 3, the third damper 4) and the corresponding levers (the first lever 8, the second lever 11, the third lever 16) may also be interchanged in position. That is, one end of the damper is connected below the frame 1, the other end of the damper is connected to a corresponding lever, and the lever is connected above the frame 1.

Fourth embodiment (not shown)

The utility model provides a delivery vehicle, turn to the motor including frame, first shock absorber, second shock absorber, third shock absorber, drive wheel, first lever, first box, driving motor, second lever, second box, left side directive wheel, right side directive wheel, third lever, third box, first steering motor and second. The frame, the first damper, the second damper, the third damper, the first lever, the second lever and the third lever form a foldable main body of the vehicle.

One end of the first shock absorber is connected to the rack, the other end of the first shock absorber is detachably connected to the first lever, one end, far away from the rack, of the first lever is fixedly connected to the first box, the driving motor is installed on the first box, and an output shaft of the driving motor is connected with the driving wheel to drive the driving wheel to rotate; one end of the second shock absorber is connected to the rack, the other end of the second shock absorber is detachably connected to the second lever, one end of the third shock absorber is connected to the rack, the other end of the third shock absorber is detachably connected to the third lever, one end, far away from the rack, of the second lever is fixedly connected to the second box, the first steering motor is installed on the second box, an output shaft of the first steering motor is connected with the left steering wheel to drive the left steering wheel to steer, one end, far away from the rack, of the third lever is fixedly connected to the third box, the second steering motor is installed on the third box, and an output shaft of the second steering motor is connected with the right steering wheel to drive the right steering wheel to steer.

A first gear set is arranged in the first box body, an output shaft of the driving motor is connected with an input end of the first gear set, and an output end of the first gear set is connected with the driving wheel; a second gear set is arranged in the second box body, an output shaft of the first steering motor is connected with an input end of the second gear set, and an output end of the second gear set is connected with the left steering wheel; and a third gear set is arranged in the third box body, an output shaft of the second steering motor is connected with an input end of the third gear set, and an output end of the third gear set is connected with the right steering wheel.

When the other end of the first shock absorber is detached from the first lever, the whole structure formed by the first lever, the first box body, the driving motor and the driving wheel can rotate around the first rotating shaft in the direction close to the rack, so that the whole structure formed by the first lever, the first box body, the driving motor and the driving wheel can be folded and contained in the inner space of the rack; when the other end of the second shock absorber is detached from the second lever, the whole structure formed by the second lever, the second box body, the first steering motor and the left steering wheel can rotate around the second rotating shaft in the direction close to the rack, so that the whole structure formed by the second lever, the second box body, the first steering motor and the left steering wheel can be folded and contained in the inner space of the rack; when the other end of the third shock absorber is detached from the third lever, the overall structure formed by the third lever, the third box body, the second steering motor and the right steering wheel can rotate around the third rotating shaft in the direction close to the rack, so that the overall structure formed by the third lever, the third box body, the second steering motor and the right steering wheel can be folded and contained in the inner space of the rack.

The fourth embodiment is different from the third embodiment in that the wheels are constituted by one driving wheel and two steered wheels (in the third embodiment, the wheels are constituted by two driving wheels and one steered wheel).

In the fourth embodiment, the driving wheels are front wheels, and the steering wheels are rear wheels, so that front-driving rear-steering is realized.

In some modified embodiments of the fourth embodiment, the driving wheels can also be rear wheels, and the steering wheels are front wheels, so that front-to-rear driving is realized.

Fifth embodiment (not shown)

The fifth embodiment is different from the first embodiment in that the first steering motor and the second steering motor are eliminated, and the left steering wheel and the right steering wheel are replaced with driven wheels (straight wheels, no steering). In addition, the first driving motor is replaced by a first power device which can drive the left driving wheel to rotate and drive the left driving wheel to turn, and the second driving motor is replaced by a second power device which can drive the right driving wheel to rotate and drive the right driving wheel to turn. In addition, a differential device is arranged to realize differential rotation of the left driving wheel and the right driving wheel.

Sixth embodiment (not shown)

The sixth embodiment is different from the second embodiment in that the first steering motor and the second steering motor are eliminated, and the left steered wheel and the right steered wheel are replaced with driven wheels (straight wheels, no steering). In addition, the first driving motor is replaced by a first power device which can drive the left driving wheel to rotate and drive the left driving wheel to turn, and the second driving motor is replaced by a second power device which can drive the right driving wheel to rotate and drive the right driving wheel to turn. In addition, a differential device is arranged to realize differential rotation of the left driving wheel and the right driving wheel.

Seventh embodiment (not shown)

The seventh embodiment provides a vehicle that differs from the third embodiment in that the steering motor is eliminated and the steering wheel is replaced with a driven wheel (straight wheel, no steering). In addition, the first driving motor is replaced by a first power device which can drive the left driving wheel to rotate and drive the left driving wheel to turn, and the second driving motor is replaced by a second power device which can drive the right driving wheel to rotate and drive the right driving wheel to turn. In addition, a differential device is arranged to realize differential rotation of the left driving wheel and the right driving wheel.

Eighth embodiment (not shown)

The eighth embodiment is different from the fourth embodiment in that the first steering motor and the second steering motor are eliminated, and the left steered wheel and the right steered wheel are replaced with driven wheels (straight wheels, no steering). In addition, the driving motor is replaced by a power device, and the power device can drive the driving wheel to rotate and drive the driving wheel to turn.

The present invention is explained in the embodiments of the vehicle, which are wheel-type vehicles (for example, a bicycle, a recumbent bicycle, and an electric bicycle). That is, the frame is a vehicle frame, the traveling mechanisms are wheels, the driving traveling mechanisms are driving wheels (the left driving traveling mechanism is a left driving wheel, and the right driving traveling mechanism is a right driving wheel), and the steering traveling mechanisms are steering wheels (the left steering traveling mechanism is a left steering wheel, and the right steering traveling mechanism is a right steering wheel).

However, the techniques of the present invention are equally applicable to vehicles such as skis, boats, and water motorcycles.

Corresponding to the sledge, the driving and traveling mechanism can be a wheel tooth type driving wheel or a crawler wheel, and the steering and traveling mechanism can be a sled. The driving travelling mechanism and the steering travelling mechanism are detachably connected with the foldable main body. When folding, the driving running mechanism and the steering running mechanism are separated from the connecting end of the foldable main body.

Corresponding to water vehicles such as ships, water motorcycles and the like, the driving travelling mechanism can be a roller type floating wheel, and the steering travelling mechanism can be a streamline buoy. The driving travelling mechanism and the steering travelling mechanism are detachably connected with the foldable main body. When folding, the driving running mechanism and the steering running mechanism are separated from the connecting end of the foldable main body.

Vehicles such as skibob, boats, and water-borne motorcycles are preferably forward-rotating and backward-driving.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A foldable body of a vehicle is characterized by comprising a frame, a first shock absorber, a second shock absorber, a third shock absorber, a fourth shock absorber, a first lever, a second lever, a third lever and a fourth lever;

2. A delivery vehicle is characterized by comprising a foldable main body, a left driving travelling mechanism, a right driving travelling mechanism, a first box body, a first driving motor, a second box body, a second driving motor, a left steering travelling mechanism, a right steering travelling mechanism, a third box body, a first steering motor, a fourth box body and a second steering motor, wherein the foldable main body comprises a rack, a first shock absorber, a second shock absorber, a third shock absorber, a fourth shock absorber, a first lever, a second lever, a third lever and a fourth lever;

3. The vehicle of claim 2, wherein a first gear set is arranged in the first box, an output shaft of the first driving motor is connected with an input end of the first gear set, and an output end of the first gear set is connected with the left driving travelling mechanism;

a second gear set is arranged in the second box body, an output shaft of the second driving motor is connected with an input end of the second gear set, and an output end of the second gear set is connected with the right driving travelling mechanism;

a third gear set is arranged in the third box body, an output shaft of the first steering motor is connected with an input end of the third gear set, and an output end of the third gear set is connected with the left steering travelling mechanism;

and a fourth gear set is arranged in the fourth box body, an output shaft of the second steering motor is connected with an input end of the fourth gear set, and an output end of the fourth gear set is connected with the right steering travelling mechanism.

4. The vehicle according to claim 2, wherein when the other end of the first damper is detached from the first lever, the entire structure of the first lever, the first box, the first driving motor and the left driving traveling mechanism can rotate around the first rotating shaft in a direction approaching the frame, so that the entire structure of the first lever, the first box, the first driving motor and the left driving traveling mechanism can be folded and accommodated in the inner space of the frame;

when the other end of the second shock absorber is detached from the second lever, the whole structure formed by the second lever, the second box body, the second driving motor and the right driving travelling mechanism can rotate around the second rotating shaft in the direction close to the rack, so that the whole structure formed by the second lever, the second box body, the second driving motor and the right driving travelling mechanism can be folded and contained in the inner space of the rack;

when the other end of the third shock absorber is detached from the third lever, the whole structure formed by the third lever, the third box body, the first steering motor and the left steering travelling mechanism can rotate around the third rotating shaft in the direction close to the rack, so that the whole structure formed by the third lever, the third box body, the first steering motor and the left steering travelling mechanism can be folded and contained in the inner space of the rack;

when the other end of the fourth shock absorber is detached from the fourth lever, the overall structure formed by the fourth lever, the fourth box, the second steering motor and the right steering travelling mechanism can rotate around the fourth rotating shaft in the direction close to the rack, so that the overall structure formed by the fourth lever, the fourth box, the second steering motor and the right steering travelling mechanism can be folded and contained in the inner space of the rack.

5. A foldable body of a vehicle is characterized by comprising a frame, a first shock absorber, a second shock absorber, a third shock absorber, a first lever, a second lever and a third lever;

6. A delivery vehicle is characterized by comprising a foldable main body, a left driving travelling mechanism, a right driving travelling mechanism, a first box body, a first driving motor, a second box body, a second driving motor, a steering travelling mechanism, a third box body and a steering motor, wherein the foldable main body comprises a rack, a first shock absorber, a second shock absorber, a third shock absorber, a first lever, a second lever and a third lever;

7. The vehicle of claim 6, wherein a first gear set is arranged in the first box, an output shaft of the first driving motor is connected with an input end of the first gear set, and an output end of the first gear set is connected with the left driving travelling mechanism;

and a third gear set is arranged in the third box body, an output shaft of the steering motor is connected with an input end of the third gear set, and an output end of the third gear set is connected with the steering travelling mechanism.

8. The vehicle according to claim 6, wherein when the other end of the first damper is detached from the first lever, the entire structure of the first lever, the first box, the first driving motor and the left driving traveling mechanism can rotate around the first rotating shaft in a direction approaching the frame, so that the entire structure of the first lever, the first box, the first driving motor and the left driving traveling mechanism can be folded and accommodated in the inner space of the frame;

when the other end of the third shock absorber is detached from the third lever, the whole structure formed by the third lever, the third box body, the steering motor and the steering travelling mechanism can rotate around the third rotating shaft in the direction close to the rack, so that the whole structure formed by the third lever, the third box body, the steering motor and the steering travelling mechanism can be folded and contained in the inner space of the rack.

9. A delivery vehicle is characterized by comprising a foldable main body, a driving travelling mechanism, a first box body, a driving motor, a second box body, a left steering travelling mechanism, a right steering travelling mechanism, a third box body, a first steering motor and a second steering motor, wherein the foldable main body comprises a rack, a first shock absorber, a second shock absorber, a third shock absorber, a first lever, a second lever and a third lever;

10. The vehicle of claim 9, wherein a first gear set is arranged in the first box, an output shaft of the driving motor is connected with an input end of the first gear set, and an output end of the first gear set is connected with the driving travelling mechanism;

a second gear set is arranged in the second box body, an output shaft of the first steering motor is connected with an input end of the second gear set, and an output end of the second gear set is connected with the left steering travelling mechanism;

and a third gear set is arranged in the third box body, an output shaft of the second steering motor is connected with an input end of the third gear set, and an output end of the third gear set is connected with the right steering travelling mechanism.

11. The vehicle according to claim 9, wherein when the other end of the first damper is detached from the first lever, the entire structure of the first lever, the first box, the driving motor, and the driving mechanism can rotate around the first rotation axis in a direction approaching the frame, so that the entire structure of the first lever, the first box, the driving motor, and the driving mechanism can be folded and accommodated in the inner space of the frame;

when the other end of the second shock absorber is detached from the second lever, the whole structure formed by the second lever, the second box body, the first steering motor and the left steering travelling mechanism can rotate around the second rotating shaft in the direction close to the rack, so that the whole structure formed by the second lever, the second box body, the first steering motor and the left steering travelling mechanism can be folded and contained in the inner space of the rack;

when the other end of the third shock absorber is detached from the third lever, the overall structure formed by the third lever, the third box body, the second steering motor and the right steering travelling mechanism can rotate around the third rotating shaft in the direction close to the rack, so that the overall structure formed by the third lever, the third box body, the second steering motor and the right steering travelling mechanism can be folded and contained in the inner space of the rack.