CN214565913U

CN214565913U - Auxiliary wheel kit and mobile device

Info

Publication number: CN214565913U
Application number: CN202120038352.1U
Authority: CN
Inventors: 甄旭彬; 张令; 乔万阳
Original assignee: Ninebot Beijing Technology Co Ltd
Current assignee: Ninebot Beijing Technology Co Ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-11-02
Anticipated expiration: 2031-01-07

Abstract

The embodiment of the utility model provides an auxiliary wheel external member and mobile device for install to mobile device, include: a wheel carrier; the wheel body is rotatably arranged on the wheel frame; the driving device is in driving connection with the wheel frame and at least drives the wheel frame and the wheel body to move at a first position and a second position; wherein the wheel body is higher in height when in the first position than when in the second position. The embodiment of the utility model provides an auxiliary wheel external member and mobile device when the auxiliary wheel supports in the running surface, can play the effect of the whole car of auxiliary stay, improve safety of traveling, when not supporting in the running surface, do not influence the normal use of whole car.

Description

Auxiliary wheel kit and mobile device

Technical Field

The utility model relates to a tool technical field that rides instead of, especially, relate to an auxiliary wheel external member and mobile device.

Background

In the related art, when the balance car and the wheelchair run on a running surface, once the movable equipment topples over, the whole car is very easy to turn over, personnel is easily injured by falling, and the like, so that the running safety is not facilitated.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is proposed to solve the above problems or at least partially solve the above problems.

An embodiment of the first aspect of the present invention provides an auxiliary wheel kit for installation to a mobile device, including:

a wheel carrier;

the wheel body is rotatably arranged on the wheel frame;

the driving device is in driving connection with the wheel frame and at least drives the wheel frame and the wheel body to move at a first position and a second position;

wherein the wheel body is higher in height when in the first position than when in the second position.

In some embodiments, the driving device drives the wheel carrier and the wheel body to rotate between the first position and the second position; or the driving device drives the wheel frame and the wheel body to move between the first position and the second position.

In some embodiments, the driving device drives the wheel carrier and the wheel body to rotate between the first position and the second position, and the driving device includes a rotating motor and an intermediate transmission component, and a motor shaft of the rotating motor is in driving connection with the wheel carrier through the intermediate transmission component.

In some embodiments, the rotational axis of the motor shaft and the rotational axis of the wheel carrier are perpendicular to each other.

In some embodiments, the intermediate transmission assembly comprises:

the worm is fixedly connected with the motor shaft;

the worm wheel is used for being rotatably connected with the movable equipment, the worm wheel is in meshing transmission with the worm, and the worm wheel is in driving connection with the wheel carrier.

In some embodiments, the intermediate transmission assembly includes a speed reducer, a motor shaft of the rotating motor is in driving connection with the wheel carrier through the speed reducer, an input gear of the speed reducer is fixedly connected with the motor shaft, an output gear of the speed reducer is fixedly connected with the wheel carrier, and a wheel diameter of the input gear of the speed reducer is smaller than a wheel diameter of the output gear of the speed reducer.

In some embodiments, the drive means drives the carriage in rotation between the first position and the second position; the angle of the wheel frame and the wheel body rotated from the first position to the second position is 90 degrees.

An embodiment of the second aspect of the present invention provides a mobile device, including: a housing, and an auxiliary wheel assembly as claimed in any preceding claim, the auxiliary wheel assembly being removably mounted to the housing.

In some embodiments, the housing encloses an accommodating cavity, the driving device of the auxiliary wheel set is disposed in the accommodating cavity, and the wheel carrier and the wheel body are disposed outside the housing.

In some embodiments, a tilt angle detection device; the inclination angle detection device is electrically connected with the driving device and is used for detecting the inclination angle of the movable equipment relative to a running surface;

when the inclination angle detection device detects that the inclination angle reaches a preset value, the inclination angle detection device sends a control signal to the driving device so as to start the driving device, and the driving device is started to be used for driving the wheel frame and the wheel body to move from a first position to a second position. In some embodiments, the preset value ranges from 3 ° to 5 °.

In some embodiments, an outermost edge of a side of the wheel body remote from the movable device protrudes beyond an outermost edge of the movable device.

In some embodiments, the mobile device comprises a balance car.

The embodiment of the utility model provides an auxiliary wheel external member and mobile device, the wheel body that can drive the auxiliary wheel external member through drive arrangement is at first position and second position motion, so that can be according to actual conditions or actual need, selectively support the auxiliary wheel in the driving surface or do not support in the driving surface, when supporting in the driving surface, can play the effect of the whole car of auxiliary stay, improve the safety of traveling, when not supporting in the driving surface, do not influence the normal use of whole car, and can be according to supporting in the driving surface and not supporting in the different user state of driving surface, reach the purpose of mobile device's different user mode, improve mobile device's use flexibility.

Drawings

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

Fig. 1 is an exploded view of a mobile device with an auxiliary wheel set according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a mobile device according to an embodiment of the present invention;

fig. 3a is a schematic view of a state in which the wheel frame and the wheel body are in the first position and the movable apparatus is toppled over according to an embodiment of the present invention;

fig. 3b is a schematic view illustrating a state of the movable apparatus when the wheel frame and the wheel body of the movable apparatus according to an embodiment of the present invention are at the second position;

fig. 3c is a schematic view illustrating the wheel frame and the wheel body of the mobile device moving from the first position to the second position according to an embodiment of the present invention;

fig. 4 is a top view of a mobile device according to an embodiment of the present invention;

fig. 5 is an electrical control schematic diagram of a mobile device according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

Furthermore, the term "coupled" is intended to include any direct or indirect coupling. Thus, if a first device couples to a second device, that connection may be through a direct connection, or through an indirect connection via other devices. The following description is of the preferred embodiment of the present invention, and is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the invention. The protection scope of the present invention is subject to the limitations defined by the appended claims.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Example one

Fig. 1 is an exploded view of a mobile device with an auxiliary wheel set according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a mobile device according to an embodiment of the present invention; fig. 3a is a schematic view of a state in which the wheel frame and the wheel body are in the first position and the movable apparatus is toppled over according to an embodiment of the present invention; fig. 3b is a schematic view illustrating a state of the movable apparatus when the wheel frame and the wheel body of the movable apparatus according to an embodiment of the present invention are at the second position; fig. 3c is a schematic view illustrating the wheel frame and the wheel body of the mobile device moving from the first position to the second position according to an embodiment of the present invention; referring to fig. 1 to 3c, the present embodiment provides an auxiliary wheel kit for being mounted to a movable apparatus, wherein the movable apparatus may be a balance car, a kart, a drift car, a wheelchair, etc. Any equipment that can travel on the running surface may be used.

The present embodiment is directed to provide an auxiliary wheel set, so as to be installed in the mobile device, and to achieve the purpose of auxiliary supporting the mobile device when necessary. For example, when a balance car, a wheelchair, or the like travels on a traveling surface, and the balance car, the wheelchair, or the like is suddenly in an unbalanced state due to a sudden downhill slope or an operator misoperation, the auxiliary wheels can support the movable equipment at this time, so that the movable equipment is in a balanced state, an anti-toppling effect is achieved, and the traveling safety is improved.

In the case of a utility vehicle such as a kart or a drift car, an auxiliary wheel may be installed in front of or behind or under the vehicle body to support the running surface with the auxiliary wheel when necessary, so that the entire vehicle is used in a drift car mode, and when the auxiliary wheel does not support the running surface, the entire vehicle is used in a kart car mode. Therefore, the multifunctional bicycle can be used for multiple purposes, has higher use flexibility and can effectively reduce the manufacturing cost.

Generally, the auxiliary wheel refers to a wheel for assisting in supporting the movable device, the movable device generally has a driving wheel, the driving wheel may include a driving wheel and a driven wheel, while the diameter of the auxiliary wheel is generally smaller and generally much smaller than the diameters of the driving wheel and the driven wheel, the auxiliary wheel may be generally disposed at a middle position in the width direction of the movable device, or may be symmetrically disposed along the width direction of the movable device, and this embodiment is not limited.

The following provides an auxiliary wheel movably arranged with a movable device, so that the auxiliary wheel can be switched between a state of being supported on a running surface and a state of being separated from the running surface, and the requirements of different running scenes are met.

Specifically, referring to fig. 1 to fig. 3b, the auxiliary wheel assembly of the present embodiment includes: wheel carrier 10, wheel body 20 and drive device 30.

The wheel body 20 may be rotatably disposed on the wheel frame 10, and in particular, the wheel frame 10 may be in a door shape, and in particular, includes a first vertical portion 11 and a second vertical portion 12 that are oppositely disposed, and a transverse portion 13 connected between the first vertical portion 11 and the second vertical portion 12. The wheel body 20 may have a first rotating shaft M1 at the center thereof, and the first vertical portion 11 and the second vertical portion 12 may have a through hole or a through slot for the first rotating shaft M1 to pass through, and the first rotating shaft M1 may be engaged with the through hole or the through slot, so that the wheel body 20 may be rotatably connected with the wheel frame 10 via the first rotating shaft M1. When the wheel body 20 is supported on the driving surface, the wheel body 20 can rotate under the action of the friction force of the driving surface, so that the movable equipment can be supported without influencing the walking capability of the movable equipment.

The driving device 30 is in driving connection with the wheel frame 10, and the driving device 30 at least drives the wheel frame 10 and the wheel body 20 to move at a first position and a second position; wherein the wheel body 20 is at a higher height when in the first position than when the wheel body 20 is in the second position.

By "drive-coupled" is meant that the driving device 30 has a driving relationship with the wheel frame 10, and when the driving device 20 is driven, the wheel frame 10 can be driven to move according to a preset manner. Specifically, in some embodiments, the driving device 30 may drive the wheel frame 10 and the wheel body 20 to rotate, and the wheel frame 10 may be fixedly connected to the driving device 30, or may rotate in a gear engagement manner with the driving device 30. Alternatively, the driving device 30 may drive the wheel frame 10 and the wheel body 20 to move in the height direction, so that the wheel frame 10 and the wheel body 20 can move between the first position and the second position. The specific configuration may be selected according to the actual structural layout, and this embodiment is not limited.

In the preferred embodiment, the wheel frame 10 and the wheel body 20 may be rotatably connected to the movable device, the driving device 30 may drive the wheel frame 10 and the wheel body 20 to rotate, specifically, the driving device 30 directly drives the wheel frame 10 to rotate relative to the movable device, and during the rotation, the wheel body 20 and the wheel frame 10 may be relatively stationary before the wheel body 20 contacts the driving surface, or before the wheel body 20 contacts the external friction force, that is, the driving device 30 drives the wheel frame 10 to rotate, and the wheel frame 10 drives the wheel body 20 to rotate relative to the driving surface and the movable device.

It will be understood that the driving device 30 can drive the wheel frame 10 and the wheel body 20 to rotate only by setting a rotation center on the movable device, and the wheel frame 10 and the wheel body 20 move only by setting a sliding track on the movable device in the height direction. Therefore, it is preferable that the driving device 30 is specifically used for driving the wheel frame 10 and the wheel body 20 to rotate, so that the wheel frame 10 and the wheel body 20 can rotate relative to the movable device, and the wheel frame 10 and the movable device need to be connected in a rotating manner.

The driving device 30 drives the wheel frame 10 and the wheel body 20 to rotate between the first position and the second position; the angle through which the wheel frame 10 and the wheel body 20 rotate from the first position to the second position may be 90 °. In particular, when the wheel frame 10 and the wheel body 20 are in the first position, the wheel frame 10 and the wheel body 20 may be substantially parallel to a plane formed by the driving wheels of the movable device; when the wheel frame 10 and the wheel body 20 are in the second position, the wheel frame 10 and the wheel body 20 may be substantially perpendicular to a plane formed by the driving wheels of the movable apparatus.

For the rotatable connection of the wheel carrier 10 and the movable device, there may be two specific implementations:

the first method comprises the following steps: the auxiliary wheel kit of this embodiment may further include a second rotating shaft M2, the second rotating shaft M2 may be rotatably connected to the mobile device, the mobile device may have a through hole for the second rotating shaft M2 to be installed on, and the second rotating shaft M2 may be detachably and rotatably connected to the mobile device by a bolt or the like. The wheel frame 10 may be directly or indirectly fixedly connected to the second rotating shaft M2, for example, the wheel frame 10 is indirectly fixedly connected to the second rotating shaft M2 through an intermediate connector N, and the intermediate connector N may be welded, clamped, screwed, etc. to the wheel frame 10. The second rotating shaft driving device 30 is in driving connection with the second rotating shaft M2, such that the driving device 30 is indirectly in driving connection with the wheel frame 10, such that the driving device 30 drives the second rotating shaft M2, the wheel frame 10 and the wheel body 20 to rotate relative to the movable apparatus.

And the second method comprises the following steps: the auxiliary wheel kit of this embodiment may further include a second rotating shaft M2, the second rotating shaft M2 may be fixedly connected to the movable device, and the wheel frame 10 may be rotatably connected to the second rotating shaft M2 through an intermediate connecting body N, the intermediate connecting body N may be drivingly connected to the driving device 30, so that the driving device 30 is indirectly drivingly connected to the wheel frame 10, so that the driving device 30 drives the intermediate connecting body N to rotate, and the intermediate connecting body N drives the wheel frame 10 and the wheel body 20 to rotate relative to the movable device.

In some specific embodiments, the intermediate connecting body N may be a gear structure, a connecting block, a connecting cylinder, or the like, and the present invention is not limited thereto.

The driving device 30 may include a mounting portion 31 and a driving portion 32, the mounting portion 31 is configured to be fixed to the movable apparatus, and during use, the mounting portion 31 is always in a stationary state relative to the movable apparatus to ensure stability of the driving device 30 in the movable apparatus, and the set maintenance of the driving device 30 can be maintained even if the movable apparatus is in any posture. While the driving part 32 is movable relative to the mounting part 31, the driving part 32 is in particular in driving connection with the wheel carrier 10.

The driving device 30 may include a power device 30a and an intermediate transmission assembly 30b, the power device 30a being used to output power, and the intermediate transmission assembly 30b being used to transmit the power output from the power device 30a to the wheel frame 10 such that the wheel frame 10 is driven by the driving device 30. Through the design of middle transmission assembly 30b, can realize remote transmission, on the basis of the current structural configuration of mobile device, can rationally design middle transmission assembly 30b to need not to carry out structural modification to mobile device, can realize the motion of auxiliary wheel external member.

In the present embodiment, it is preferable that the motion output by the power device 30a is a rotational motion, and the intermediate transmission assembly 30b finally rotates the wheel frame 10 with respect to the movable apparatus by transmitting a rotational force, thereby rotating between the first position and the second position.

In other embodiments, the motion output by the power device 30a may be a linear motion, and the intermediate transmission assembly 30b may finally rotate the wheel carriage 10 relative to the movable apparatus by converting the linear motion into a rotational motion, so as to rotate between the first position and the second position. Specifically, the power device 30a may be a linear motor, the intermediate transmission assembly 30b may include a combination of a gear and a rack, the linear motor may be fixedly connected to the rack, the gear may be in meshing transmission with the rack, and the gear may serve as the intermediate connection body N, and the rotation of the intermediate connection body N drives the wheel carrier 10 fixedly connected thereto to rotate between the first position and the second position.

The embodiment of the utility model provides an auxiliary wheel external member, the wheel body that can drive the auxiliary wheel external member through drive arrangement is at first position and second position motion, so that can be according to actual conditions or actual need, selectively support the auxiliary wheel in the running surface or do not support in the running surface, when supporting in the running surface, can play the effect of the whole car of auxiliary stay, improve the safety of traveling, when not supporting in the running surface, do not influence the normal use of whole car, and can be according to supporting in the running surface and not supporting in the different user state of running surface, reach the purpose of the different user mode of mobile device, improve mobile device's use flexibility.

In a specific embodiment, as shown in fig. 1, the power device 30a may include a rotating motor, and the rotating motor may drive the wheel frame 10 and the wheel body 20 to rotate between the first position and the second position through the intermediate transmission assembly 30 b. Compared with the way that the power device 30a outputs linear motion, the power device 30a is a rotating motor and directly outputs rotational motion, and the distance and the space for the power device 30a to linearly move do not need to be reserved in the movable equipment, so that the space of the movable equipment can be saved as much as possible, the volume of the movable equipment is reduced, and the requirement of miniaturization of the movable equipment is facilitated.

As shown in fig. 1, in case that the power device 30a is a rotary motor, a rotation axis of a motor shaft (not shown) of the rotary motor may be perpendicular to a rotation axis of the wheel frame 10. The intermediate transmission assembly 30b can be used to change the direction of transmission of the force output from the power unit 30 a. In a preferred embodiment, the wheel frame 10 and the wheel body 20 may be disposed at a middle position in a width direction of the movable device. Taking the balance car shown in fig. 1 as an example, the wheel frame 10 and the wheel body 20 may be disposed at a front middle position of the balance car, the rotation axis of the wheel frame 10 may be parallel to the width direction of the balance car, and since the rotation axis of a motor shaft (not shown) of the rotating motor is perpendicular to the rotation axis of the wheel frame 10, the motor shaft of the rotating motor may extend in the front-back direction of the balance car, based on which, the rotating motor may be disposed at a middle position of the width direction of the balance car, and the structure of the rotating motor itself may be symmetrically distributed in the width direction of the balance car. Because the weight of the rotating motor is generally heavier, through the design, the rotating motor can be symmetrically arranged in the width direction of the balance car, and therefore the balance of the balance car is improved to a certain extent.

It will of course be appreciated that for other types of vehicle, the axis of rotation of the motor shaft (not shown) of the rotating motor is perpendicular to the axis of rotation of the wheel carrier 10, again to some extent ensuring the balance of the mobile device.

The intermediate transmission assembly 30b is described in detail below, and in a preferred embodiment, as shown in FIG. 1, the intermediate transmission assembly 30b may include: a worm 31b, a worm wheel 32 b.

The worm 31b may be fixedly connected with a motor shaft such that rotation of the motor shaft of the rotating motor rotates the worm 31b, the worm wheel 32b may be used for rotatably connecting with the movable device, the worm wheel 32b is in mesh transmission with the worm 31b, and the worm wheel 32b is in driving connection with the wheel carrier 10.

Specifically, the worm wheel 32b and the wheel frame 10 may be directly and fixedly connected, so as to realize the driving connection between the worm wheel 32b and the wheel frame 10, wherein the worm wheel 32b serves as the intermediate connecting body N.

In other embodiments, the intermediate connector N may also be another type of gear, the worm gear 32b is engaged with the gear-shaped intermediate connector N, and the worm gear 32b is engaged with the intermediate connector N of the gear structure, so as to realize the driving connection between the worm gear 32b and the wheel carrier 10.

When the worm wheel 32b is directly and fixedly connected with the wheel carrier 10, the number of parts used by the whole kit is minimized, the cost is minimized, and the transmission efficiency is maximized.

In this embodiment, the worm gear is used as the intermediate transmission assembly 30b, and the worm gear has the following advantages:

on the first hand, the transmission ratio of the worm gear and the worm is large, compared with the gear transmission, the transmission ratio is large, so that the torque is amplified, the labor is saved, the small input force can be transmitted to the worm gear through the worm, and finally, the large output force is achieved. Therefore, the rotating motor only needs to rotate with smaller power, the power of the rotating motor directly influences the size of the rotating motor, and therefore the rotating motor with smaller size and lighter weight can be selected, the space is not occupied, the cost is low, the whole size of the movable equipment is smaller, the weight is lighter, and the portability is better.

In the second aspect, compared with the ordinary gear transmission, the ordinary gear and the worm gear transmission mode needs to achieve the same transmission ratio, and the gear transmission can be realized only by multi-stage transmission, at this time, a gear train with a larger volume is needed, and the volume of the intermediate transmission part 30b is also smaller through the worm gear transmission mode, so that the whole volume of the movable equipment is further smaller, the weight is lighter, and the portability is better.

In the third aspect, the helix angle of the worm 31b in the worm gear is generally small and smaller than the friction angle, so that the worm 31b can be self-locked, the worm gear has a reverse stroke self-locking characteristic, that is, the characteristic of unidirectional power transmission, and power can be only input from the worm 31b and output from the worm wheel 32 b. Based on this characteristic, when the wheel body 20 moves to the second position and contacts the driving surface, the friction of the driving surface or the obstacle on the driving surface collides with the wheel frame 10, so that the wheel body 20 and the wheel frame 10 reversely drive the worm wheel 32b to rotate and further drive the worm 31b and the rotating motor to rotate during the driving process. Therefore, after the wheel body 20 and the wheel frame 10 are at the second position, as long as the rotating motor does not actively drive the wheel body 20 and the wheel frame 10 to rotate to the first position, the wheel body 20 and the wheel frame 10 can be maintained at the second position, and the reliability is good.

Of course, alternatively, in some other embodiments, the intermediate transmission assembly 30b may include a speed reducer, a motor shaft of the rotating motor may be in driving connection with the wheel carrier 10 through the speed reducer, an input gear of the speed reducer is fixedly connected with the motor shaft, an output gear of the speed reducer is fixedly connected with the wheel carrier 10, and a wheel diameter of the input gear of the speed reducer is smaller than a wheel diameter of the output gear of the speed reducer. Since the rotation speed of the input gear/the rotation speed of the output gear is equal to the passive power/the active power, the input gear and the motor shaft are more labor-saving as the output gear is slower, and therefore, when the pinion and the gearwheel are driven in combination, it is preferable that the transmission route of the force is the pinion → the gearwheel to form a force amplifier, whereby the force output by the motor shaft fixedly connected to the input gear can be made small, the labor saving can be achieved, and the power of the rotating motor can be selected to be small, and further the rotating motor with a small volume and weight can be selected.

Example two

This embodiment provides a mobile device, and fig. 4 is a top view of the mobile device provided by an embodiment of the present invention. As shown in fig. 1 to 4, the movable apparatus provided in this embodiment is preferably a balance car, and in some embodiments, the movable apparatus may also be a kart, a wheelchair, a drift car, or the like. The utility model discloses do not do the restriction.

When the movable equipment is a balance car, the upper surface of the shell 100 of the balance car can be provided with a pedal pad 101, the pedal pad 101 can be made of flexible or elastic materials, a pedal switch 102 can be arranged below the pedal pad 101, a photoelectric switch 103 can be arranged below the pedal switch 102, when a user uses the balance car, the user stands on the pedal pad 101, the pedal switch 102 shields the light of the photoelectric switch 103, and therefore the balance car senses that the user stands on the balance car at the moment, and then other functions of the balance car can be started. This can reduce the possibility of erroneous operation to some extent.

The mobile device of the present embodiment includes a housing 100, and an auxiliary wheel set provided in the first embodiment, wherein the auxiliary wheel set can be detachably mounted on the housing 100. So that the auxiliary wheel can be detached independently, and the basic functions of the movable equipment can not be influenced if the auxiliary wheel is installed on the movable equipment.

In this embodiment, as shown in fig. 4, the outermost edge of the side of the wheel body 20 away from the movable device may protrude from the outermost edge of the movable device. From the top view of fig. 4, the outermost edge of the wheel body 20 on the side away from the movable device may have a certain distance L from the outermost edge of the movable device, so that when the movable device falls, the wheel body 20 can quickly and reliably contact the driving surface, so as to ensure the reliability of the falling prevention capability and improve the driving safety and reliability of the user.

As shown in fig. 1, the housing 100 may enclose an accommodating cavity, the driving device of the auxiliary wheel set is disposed in the accommodating cavity, and the wheel frame 10 and the wheel body 20 are disposed outside the housing 100, so that the wheel body 20 can rotate freely in the wheel frame 10 without interference from the housing 100, and can be supported on the driving surface.

Fig. 5 is an electrical control schematic diagram of a mobile device according to an embodiment of the present invention. As shown in fig. 5, further, the mobile device provided in this embodiment may further include: a tilt angle detection means 200, the tilt angle detection means 200 being for detecting a tilt angle of the movable apparatus relative to the running surface. In one embodiment, the tilt detection device 200 may be a gyroscope that can sense sensitively and rapidly whether the mobile device is tilted with respect to the driving surface.

When the inclination angle detecting device 200 detects that the inclination angle is smaller than the preset value, the wheel frame 10 and the wheel body 20 are at the first position; when the tilt angle detecting device 200 detects that the tilt angle reaches a predetermined value, the tilt angle detecting device 200 sends a control signal to the driving device to start the driving device, and the driving device is started to drive the wheel frame 10 and the wheel body 20 to move from the first position to the second position. Taking the movable equipment as an example of the balance car, when the balance car normally runs, the pedal plate of the balance car is basically parallel to the running surface and is in a balance state. The preset value may be defined as 3 to 5 °, when the tilt angle of the balance car is smaller than the above-mentioned angle, the tilt angle detection device 200 does not trigger the driving device 30, and when the balance car tilts relative to the driving surface by 3 to 5 °, the tilt angle detection device 200 may send a control signal to the driving device 30, so that the driving device 30 responds, and since a certain time is required for the driving device 30 to respond and function, and the tilting of the balance car is generally instantaneous, therefore, by starting the driving device 30 before the balance car completely tilts to the state shown in fig. 3a, when the balance car tilts to fig. 3a, the driving device 30 drives the wheel carrier 10 and the wheel body 20 to rotate from the first position to the second position (as shown in fig. 3 b), thereby achieving the purpose of righting the balance car and achieving the tilting and self-righting function.

In practical applications, since the time for the tilting to occur is short and a certain process is required for the driving device 30 to drive the wheel frame 10 and the wheel body 20 to move, the driving device 30 can be started to operate immediately before the tilting to occur, so that the driving device 30 can react immediately before the tilting occurs, and it is ensured that the driving device 30 can drive the wheel frame 10 and the wheel body 20 to move when the tilting occurs, so that the wheel frame 10 and the wheel body 20 move to the second position, and the movable equipment returns to the balanced state again, therefore, the preset value can be designed to be small, thereby improving the reliability of the anti-tilting capability, and preventing the driving device 30 from having to drive the wheel frame 10 and the wheel body 20 to move to the second position too late when the tilting occurs.

It should be noted that, the structure and the function of the auxiliary wheel kit of the mobile device provided in this embodiment are the same as those of the first embodiment, and specific reference may be made to the description of the first embodiment, which is not repeated herein.

Various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. An auxiliary wheel kit for mounting to a mobile device, comprising:

a wheel carrier;

the wheel body is rotatably arranged on the wheel frame;

2. The auxiliary wheel kit as claimed in claim 1, wherein the drive means drives the carriage to rotate between the first and second positions; alternatively, the drive means drives the carriage between the first and second positions.

3. The auxiliary wheel kit according to claim 2, wherein the driving device drives the wheel frame and the wheel body to rotate between the first position and the second position, the driving device comprises a rotating motor and an intermediate transmission component, and a motor shaft of the rotating motor is in driving connection with the wheel frame through the intermediate transmission component.

4. The auxiliary wheel kit as claimed in claim 3, wherein the rotational axis of the motor shaft and the rotational axis of the wheel carrier are perpendicular to each other.

5. The auxiliary wheel kit as claimed in claim 3, wherein the intermediate transmission assembly comprises:

the worm is fixedly connected with the motor shaft;

6. The auxiliary wheel kit according to claim 3, wherein the intermediate transmission assembly comprises a speed reducer, a motor shaft of the rotating motor is in driving connection with the wheel carrier through the speed reducer, an input gear of the speed reducer is fixedly connected with the motor shaft, an output gear of the speed reducer is fixedly connected with the wheel carrier, and a wheel diameter of the input gear of the speed reducer is smaller than a wheel diameter of the output gear of the speed reducer.

7. The auxiliary wheel kit as claimed in claim 2, wherein the drive means drives the wheel carrier and the wheel body to rotate between the first position and the second position; the angle of the wheel frame and the wheel body rotated from the first position to the second position is 90 degrees.

8. A mobile device, comprising: a housing, and an auxiliary wheel assembly as claimed in any one of claims 1 to 7, which is removably mounted to the housing.

9. The mobile apparatus according to claim 8, wherein the housing encloses a receiving cavity, the driving device of the auxiliary wheel set is disposed in the receiving cavity, and the wheel carrier and the wheel body are disposed outside the housing.

10. The removable device of claim 8, further comprising: a tilt angle detection device; the inclination angle detection device is electrically connected with the driving device and is used for detecting the inclination angle of the movable equipment relative to a running surface;

when the inclination angle detection device detects that the inclination angle reaches a preset value, the inclination angle detection device sends a control signal to the driving device so as to start the driving device, and the driving device is started to drive the wheel carrier to move from a first position to a second position.

11. The mobile equipment according to claim 10, wherein the preset value ranges from 3 ° to 5 °.

12. The movable apparatus of claim 8, wherein an outermost edge of a side of the wheel body remote from the movable apparatus protrudes beyond an outermost edge of the movable apparatus.

13. The mobile equipment according to claim 8, wherein the mobile equipment comprises a balance car.