CN113428276A

CN113428276A - Portable two-wheeled electrodynamic balance car

Info

Publication number: CN113428276A
Application number: CN202110913130.4A
Authority: CN
Inventors: 石崇阳; 王翀
Original assignee: Yingfandi (beijing) Science And Technology Ltd
Current assignee: Yingfandi (beijing) Science And Technology Ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2021-09-24

Abstract

The invention discloses a portable two-wheeled electric balance car, and relates to the technical field of electric balance cars. The electric bicycle comprises a power supply, a control system, a first pedal device and a second pedal device, wherein motor wheels are arranged below the first pedal device and the second pedal device, wheel shafts of the motor wheels are bilateral output shafts, wheel shaft fixing frames are arranged on the lower portions of the first pedal device and the second pedal device, two ends of each wheel shaft are fixedly connected to the wheel shaft fixing frames respectively, the electric bicycle further comprises connecting pieces, two ends of each connecting piece are connected with the first pedal device and the second pedal device respectively, the first pedal device and/or the second pedal device are connected with the connecting pieces in a rotating mode, rotating axes of the first pedal device and/or the second pedal device are parallel to axes of the wheel shafts, the electric bicycle further comprises a limiting device for limiting the first pedal device and/or the second pedal device to rotate around the connecting pieces in an angle range, and the motor wheels are electrically connected with the control system. The wheel axle is small in size, convenient to store, good in stress and not easy to damage.

Description

Portable two-wheeled electrodynamic balance car

Technical Field

The invention relates to the technical field of electric balance cars, in particular to a portable two-wheeled electric balance car.

Background

The electric balance car is also called a body-sensing car, a thinking car, a camera car and the like. The principle of operation is based primarily on a basic principle known as "Dynamic Stabilization". The change of the vehicle body posture is detected through a control system (comprising a gyroscope, a central processing unit, a posture sensor and the like), and a motor is accurately driven to perform corresponding adjustment so as to keep the balance of the system. Is a novel green and environment-friendly product used as a travel tool and leisure and entertainment by modern people.

The electric balance car which is common in the prior art has two structures, including a twisting type electric balance car and a control rod type electric balance car. The body of the twisting type electric balance car is divided into a left part and a right part. The left and right vehicle bodies are connected through a middle shaft and can rotate relatively. The wheel shafts of the two motor wheels are both single-side output shafts, and the two motor wheels are respectively positioned on the outer sides of the left and right vehicle bodies and are fixedly connected with the vehicle bodies through the single-side output shafts. A control rod type electric balance car has an integrated car body, and left and right pedals are arranged on the upper surface of the car body. The wheel shafts of the two motor wheels are both single-side output shafts and are fixedly connected with the vehicle body through the single-side output shafts. A leg control/hand control rod is arranged in the middle of the vehicle body and used for controlling the steering of the vehicle.

Both structural forms have the same disadvantages. Firstly, the wheel axle direct mount of motor wheel is in the automobile body left and right sides, and the central height of automobile body is highly parallel and level mutually with the height in axle center of motor wheel. In order to ensure that the vehicle body has a certain distance from the ground (in the structure, because the vehicle body has a certain thickness, the maximum distance from the lower surface of the vehicle body to the ground is smaller than the radius of the motor wheel), the motor wheel has certain passing performance, the minimum diameter of the motor wheel is limited to a certain extent, and the minimum wheel diameter of the motor wheel in common models is 6.5 inches. The smaller the diameter of the motor wheel is, the higher the rotating speed of the motor is, and the smaller the volume and weight of the motor are. The wheel diameter and the volume weight of a motor are difficult to further reduce under the existing balance car form. And secondly, the left motor wheel and the right motor wheel are fixed on the vehicle body only by a single-side output shaft, so that the length of the wheel shaft penetrating into the vehicle body is longer to ensure the fixing strength of the wheel shaft, and the available space in the vehicle body is reduced. When a load is placed on the vehicle, the fixed position of the single-side output shaft generates large stress, and in addition, the motor generates heat, and the condition that the fastener deforms or fails occurs at the fixed position of the wheel shaft in the vehicle body.

Therefore, how to make an electrodynamic balance car, it can further reduce the diameter of motor wheel to reduce electrodynamic balance car's volume and weight, make its portable, can make the fixed comparatively firm of the shaft of motor wheel again, difficult fastener that makes the shaft takes place to warp and inefficacy in the use, become the problem that technical staff in the field await help and ask for a moment to solve.

Disclosure of Invention

The invention aims to provide a portable two-wheel electric balance car which can further reduce the diameter of a motor wheel so as to reduce the volume and the weight of the electric balance car, is convenient to carry, can ensure that a wheel shaft of the motor wheel is firmly fixed, and is difficult to deform and lose efficacy when in use.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention provides a portable two-wheeled electric balance car, which comprises a power supply and a control system, and further comprises a first pedal device and a second pedal device, wherein motor wheels are arranged below the first pedal device and the second pedal device, wheel shafts of the motor wheels are bilateral output shafts, wheel shaft fixing frames are arranged at the lower parts of the first pedal device and the second pedal device, two ends of the wheel shafts are respectively and fixedly connected to the wheel shaft fixing frames, the portable two-wheeled electric balance car also comprises connecting pieces, two ends of the connecting pieces are respectively connected with the first pedal device and the second pedal device, the first pedal device and/or the second pedal device are/is rotationally connected with the connecting pieces, the rotating axes of the first pedal device and/or the second pedal device are parallel to the axes of the wheel shafts, and the portable two-wheeled electric balance car further comprises a limiting device for limiting the rotating angle range of the first pedal device and/or the second pedal device around the connecting pieces, the motor wheel is electrically connected with the control system.

Optionally, the first pedal device is rotatably connected to the first end of the connecting member, and the second pedal device is fixedly connected to the second end of the connecting member.

Optionally, the first end of connecting piece is provided with pivot portion, be provided with the bearing frame on the first pedal device, be provided with the outer lane on the bearing frame with bearing frame fixed connection's first bearing, pivot portion with the inner circle fixed connection of first bearing, the fixed locating part that is provided with in pivot portion, still be provided with the spacing groove on the first pedal device, work as the locating part rotates and offsets with two lateral walls of spacing groove respectively when first position and second position, the locating part with the spacing groove forms stop device.

Optionally, the second end of the connecting member and the second pedal device are both provided with a threaded hole and are fixedly connected through a fastening bolt.

Optionally, the connecting member is provided as a cylindrical tube, and a first end of the cylindrical tube forms the rotating shaft portion.

Optionally, the bearing seat is fixedly connected with a connecting rod cover which covers the first bearing and the rotating shaft part through bolts, and the limiting groove is a through groove arranged on the connecting rod cover.

Optionally, the wheel shaft fixing frame is two fixing plates which are arranged at intervals and symmetrically, a clamping hole is formed in each fixing plate, a clamping portion and a threaded portion are arranged on each wheel shaft, and the clamping portion of each wheel shaft is clamped in the clamping hole in each fixing plate and is fixedly connected to the fixing plate through a bolt which is screwed on the threaded portion and is located on the outer side of each fixing plate.

Optionally, the first and second foot rest are provided as a housing structure, the control system is provided inside the first and second foot rest, and the power source is provided inside the first and/or second foot rest.

The technical scheme provided by the invention can have the following beneficial effects: the invention comprises a power supply and a control system, and further comprises a first pedal device and a second pedal device, connecting pieces with two ends respectively connected with the first pedal device and the second pedal device, wherein the first pedal device and/or the second pedal device are/is rotationally connected with the connecting pieces, and further comprises a limiting device for limiting the angle range of the first pedal device and/or the second pedal device rotating around the connecting pieces, motor wheels are arranged below the first pedal device and the second pedal device, the wheel shafts of the motor wheels are bilateral output shafts, wheel shaft fixing frames are arranged at the lower parts of the first pedal device and the second pedal device, two ends of the wheel shafts are respectively and fixedly connected to the wheel shaft fixing frames, and the motor wheels are electrically connected with the control system. The diameter of the motor wheel can be further reduced to reduce the size and the weight of the electric balance car, so that the electric balance car is convenient to carry, the wheel shaft of the motor wheel can be fixed firmly, and the fastening piece of the wheel shaft is not easy to deform and lose efficacy in the using process.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of a portable two wheeled electric balance vehicle shown in some embodiments;

FIG. 2 is an internal structural view of the portable two-wheeled electric balance vehicle shown in some embodiments;

FIG. 3 is a connection diagram of the linkage of the portable two-wheeled motorized balance vehicle with the first and second footrest devices in accordance with certain embodiments;

FIG. 4 is an exploded view of FIG. 2;

fig. 5 is a schematic view of a connection structure of a vehicle body and a motor wheel of a conventional electric balance vehicle.

In the figure: 1. a first foot pedal; 2. a second foot pedal; 3. a connecting member; 4. a motor wheel; 5. a power source; 6. a control system; 11. a wheel axle fixing frame; 12. a bearing seat; 13. a first bearing; 14. a clamp spring; 15. a connecting rod cover; 16. fastening a bolt; 31. a rotating shaft part; 41. a wheel axle; 42. a wheel body; 43. a second bearing; 44. a wheel body cover; 151. a limiting groove; 311. and a limiting member.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Specifically, "front" refers to a direction approaching the viewer perpendicular to the paper surface, and "rear" refers to a direction departing the viewer perpendicular to the paper surface. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus or methods consistent with certain aspects of the invention.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.

Referring to fig. 1-5, the invention provides a portable two-wheeled electrodynamic balance car, comprising a power supply 5, a control system 6, a first pedal device 1 and a second pedal device 2, wherein a motor wheel 4 is arranged below each of the first pedal device 1 and the second pedal device 2, a wheel shaft 41 of the motor wheel 4 is a bilateral output shaft, wheel shaft fixing frames 11 are arranged at the lower parts of each of the first pedal device 1 and the second pedal device 2, two ends of the wheel shaft 41 are respectively and fixedly connected to the wheel shaft fixing frames 11, the portable two-wheeled electrodynamic balance car further comprises a connecting piece 3, two ends of the connecting piece 3 are respectively connected with the first pedal device 1 and the second pedal device 2, the first pedal device 1 and/or the second pedal device 2 are rotatably connected with the connecting piece 3, the rotating axes of the first pedal device and/or the second pedal device 2 are parallel to the axis of the wheel shaft 41, the portable two-wheeled electrodynamic balance car further comprises a limiting device for limiting the rotating angle range of the first pedal device 1 and/or the second pedal device 2 around the connecting piece 3, the motor wheel 4 and the control system 6 are electrically connected.

The control system 6 is a conventional control system, and includes a pitch angle sensor, which senses the pitch angles of the first and second pedals 1 and 2 to control the rotation of the motor wheel 4 under the first and second pedals 1 and 2, so as to maintain the vehicle body in an upright state. When the pitch angles of the first and second pedals 1 and 2 are different, the control system 6 controls the two motor wheels 4 to rotate at different speeds for differential steering. (the first pedal device 1 and/or the second pedal device can rotate around the connecting piece 3, so that different pitch angles can be obtained, and the limiting device enables the first pedal device 1 and/or the second pedal device to rotate around the connecting piece 3 within a certain angle range so as to prevent the balance car from being difficult to control due to too large rotation angle.)

The motor wheel 4 of the present invention is disposed below the first and second foot rest 1 and 2 such that the distance between the connecting member 3 and the lower surfaces of the first and second foot rest 1 and 2 from the ground is the diameter of the motor wheel 4, and the diameter of the motor wheel 4 of the present invention can be set to be one-half of the diameter of the motor wheel of the prior art while ensuring the same trafficability. Therefore, the size and the weight of the electric balance car can be reduced, and the electric balance car is convenient to carry.

Secondly, the motor wheel 4 of the present invention is improved on the wheel shaft 41 compared with the existing motor wheel, and changes a single-side output shaft into a double-side output shaft, and other parts can be the same as the existing technology, the wheel shaft 41 is a stator structure, the wheel body 42 is a rotor structure, and forms a rotational connection through the second bearing 43, the wheel body cover 44 is covered on the wheel body 42, and the wheel shaft 41 extends out of the wheel body 42 and the wheel body cover 44 towards two sides. An axle fixing frame 11 is arranged below the first pedal device 1 and the second pedal device 2, and two ends of an axle 41 are respectively fixed on the axle fixing frame 11. Compared with the fixing mode of a single-side output shaft in the prior art, the fixing mode of the wheel shaft has the advantages that the stress of the wheel shaft 41 is more stable, the stress concentration is not easy to generate, and the deformation and the failure of the fastener of the wheel shaft 41 are not easy to cause due to the heating of the motor and the uneven stress in the use process.

Thirdly, the structure enables the gravity center of the whole vehicle to be higher, and is different from a twisting type electric balance vehicle with the gravity center almost on a motor shaft. The invention can also carry out remote control by changing the pitch angle when people are not carried.

The first pedal device 1 is rotatably connected with a first end of the connecting piece 3, and the second pedal device 2 is fixedly connected with a second end of the connecting piece 3.

This kind of structure can make first pedal device 1 and second pedal device 2 produce different pitch angles, carries out differential turn, and the structure is comparatively simple.

The first end of connecting piece 3 is provided with pivot portion 31, be provided with bearing frame 12 on the first pedal device 1, be provided with the first bearing 13 of outer lane and bearing frame 12 fixed connection on the bearing frame 12, pivot portion 31 and the inner circle fixed connection of first bearing 13, the fixed locating part 311 that is provided with on pivot portion 31, still be provided with spacing groove 151 on the first pedal device 1, when locating part 311 rotates to first position and second position respectively with two lateral walls counterbalance of spacing groove 151, locating part 311 forms stop device with spacing groove 151.

This configuration is a specific connection means for the rotational connection of the connecting member 3 to the first pedaling device 1. The presence of the first bearing 13 makes it possible to make the rotation of the first pedaling device 1 with respect to the connecting member 3 more flexible. The bearing seat 12 and the first bearing 13 of the first pedal device 1 may be provided with one or two bearings, and the two bearings may make the stress of the rotating shaft portion 31 more stable. Two clamp springs 14 can be clamped on the side wall of the rotating shaft portion 31, and the two clamp springs 14 respectively abut against the opposite side walls of the two bearing seats 12 to further limit the axial movement of the rotating shaft portion 31.

The second end of the connecting piece 3 and the second pedal device 2 are both provided with threaded holes and fixedly connected through fastening bolts 16.

The fixed connection mode has simple structure and convenient installation.

The connecting member 3 is provided as a cylindrical tube, a first end of which forms the rotating shaft portion 31.

Connecting piece 3 sets up to the cylinder pipe, and pivot portion 31 can be regarded as to the first end of cylinder pipe, need not process separately, and connecting piece 3 mainly plays the effect of connecting first pedal device 1 and second pedal device 2, adopts the cylinder pipe, simple structure, and its inside can be used for walking the line.

The bearing housing 12 is fixedly connected with a connecting rod cover 15 covering the first bearing 13 and the rotating shaft part 31 through bolts, and the limiting groove 151 is a through groove arranged on the connecting rod cover 15.

The link cover 15 is added, so that dust can be prevented from entering the first bearing 13, and a dustproof effect is achieved. The limiting groove 151 is a through groove provided on the link cover 15, and the limiting member 311 passes through the through groove and rotates within an extension range of the through groove. The limiting member 311 may be a bolt, and a threaded hole is provided on a sidewall of the rotating shaft portion 31, and the bolt is screwed in the threaded hole.

The shaft mount 11 is two fixed plates that interval and symmetry set up, is provided with the joint hole on the fixed plate, is provided with joint portion and screw thread portion on the shaft 41, and the joint portion joint of shaft 41 is downthehole in the joint on the fixed plate to bolt fixed connection in the screw thread portion and lie in the fixed plate outside through the spiro union.

By adopting the structure, the structure is simple, the shapes of the clamping hole and the clamping part are not in a rotary body shape, the wheel shaft 41 and the fixing plate can be prevented from rotating relatively by matching of the clamping hole and the clamping part, and then the shaft shoulder and the bolt on the wheel shaft 41 are clamped and fixed on the fixing plate by matching of the bolt and the threaded part.

The first and second pedaling devices 1 and 2 are both configured as a shell structure, the control system 6 is disposed inside the first and second pedaling devices 1 and 2, and the power source 5 is disposed inside the first and/or second pedaling devices 1 and 2.

The power supply 5 and the control system 6 are arranged like this, so that the electric balance car is tidier, and the whole volume is smaller.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations to the above embodiments, which are within the scope of the present invention, may be made by those of ordinary skill in the art.

Claims

1. The portable two-wheel electric balance car comprises a power source (5) and a control system (6), and is characterized by further comprising a first pedal device (1) and a second pedal device (2), wherein motor wheels (4) are arranged below the first pedal device (1) and the second pedal device (2), wheel shafts (41) of the motor wheels (4) are bilateral output shafts, wheel shaft fixing frames (11) are arranged on the lower portions of the first pedal device (1) and the second pedal device (2), two ends of each wheel shaft (41) are fixedly connected to the wheel shaft fixing frames (11) respectively, and the portable two-wheel electric balance car further comprises connecting pieces (3) of which two ends are connected with the first pedal device (1) and the second pedal device (2) respectively, and the first pedal device (1) and/or the second pedal device (2) are rotatably connected with the connecting pieces (3), The rotation axis of the motor is parallel to the axis of the wheel shaft (41), the motor further comprises a limiting device for limiting the rotation angle range of the first pedal device (1) and/or the second pedal device (2) around the connecting piece (3), and the motor wheel (4) is electrically connected with the control system (6).

2. Portable two-wheeled electrodynamic balance car according to claim 1, characterised in that the first pedal means (1) is rotatably connected to a first end of the connecting member (3) and the second pedal means (2) is fixedly connected to a second end of the connecting member (3).

3. The portable two-wheeled electrodynamic balance car of claim 2, characterized in that the first end of the connecting piece (3) is provided with a shaft portion (31), the first pedal device (1) is provided with a bearing seat (12), the bearing seat (12) is provided with a first bearing (13) having an outer ring fixedly connected with the bearing seat (12), the shaft portion (31) is fixedly connected with an inner ring of the first bearing (13), the shaft portion (31) is fixedly provided with a limit member (311), the first pedal device (1) is further provided with a limit groove (151), when the limit member (311) rotates to a first position and a second position, the limit member abuts against two side walls of the limit groove (151), and the limit member (311) and the limit groove (151) form the limit device.

4. Portable two-wheeled electrodynamic balance car according to claim 3, characterised in that the second end of the connecting piece (3) and the second pedal means (2) are provided with threaded holes and are fixedly connected by means of fastening bolts (16).

5. Portable two-wheeled electrodynamic balance car according to claim 3, characterised in that the connecting piece (3) is provided as a cylindrical tube, the first end of which forms the spindle portion (31).

6. The portable two-wheeled electrodynamic balance car of claim 3, wherein a link cover (15) covering the first bearing (13) and the rotating shaft portion (31) is fixedly connected to the bearing housing (12) by bolts, and the limit groove (151) is a through groove provided in the link cover (15).

7. The portable two-wheeled electric balance vehicle as recited in claim 1, wherein the axle holder (11) is two fixed plates disposed symmetrically and at a distance, the fixed plates are provided with engaging holes, the axle (41) is provided with an engaging portion and a threaded portion, the engaging portion of the axle (41) is engaged with the engaging holes of the fixed plates and is fixedly connected to the fixed plates by bolts screwed to the threaded portion and located outside the fixed plates.

8. Portable two-wheeled electrodynamic balance car according to claim 1, characterized in that the first (1) and the second (2) pedalling means are provided as a housing structure, the control system (6) being provided inside the first (1) and the second (2) pedalling means, the power source (5) being provided inside the first (1) and/or the second (2) pedalling means.