Electric camping car capable of automatically adjusting assisting power

Abstract

The utility model discloses an electric camping car capable of automatically adjusting assisting power, which comprises a car body, a plurality of wheels arranged at the bottom of the car body, and a pull rod, a handle, a driving device and a power supply which are arranged on the car body, the pull rod is made of metal, the bottom end of the pull rod is hinged with one side of the car body, the handle is arranged at the top end of the pull rod, and a primary mainboard is arranged in the handle. A stress sensor electrically connected with the first-stage main board is arranged in the pull rod, the driving device is electrically connected with the first-stage main board and used for driving the wheels to roll, and when the pulling force borne by the pull rod is increased, the pace of a user is accelerated at the moment, or the force spent on climbing and dragging the camping car is increased. At the moment, the driving device increases the running power according to the resistance value change of the stress piece sensor, and the rotating speed of the wheels is increased, so that the burden of a user for pulling the camping car is reduced, the camping car can adaptively adjust the rotating speed of the wheels according to the pulling force of the user during pulling, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transportation tools, in particular to an electric camping vehicle with automatic power adjustment. Background Art

[0002] Common short-distance transportation tools mainly include electric campers and trailers. At present, people prefer to use electric campers specially designed for camping as transportation tools for the distance from the parking area to the campsite. The existing electric campers mainly include a body, electric wheels arranged at the bottom of the body, and a pull rod arranged at the front end of the body. Users can tow the electric camper through the pull rod and move the electric camper with the help of the electric wheels, thereby reducing the burden of users moving the electric camper and achieving the purpose of saving effort.

[0003] However, the wheel speeds of existing electric campers are mostly adjusted at a constant or multi-speed setting. When the pulling force of the camper changes (such as climbing a slope or the user's pace quickens), the camper cannot adaptively adjust the wheel speed according to the pulling force, causing the camper to be prone to traction difficulties and poor tracking, affecting the user experience. Utility Model Content

[0004] In view of this, the utility model provides an electric camping vehicle with automatically adjustable power assistance, which is used to solve the problem that the electric camping vehicles in the prior art cannot adaptively adjust the rotation speed of the wheels according to the magnitude of the pulling force when the pulling force of the camping vehicle changes (such as climbing a slope or the user's pace quickens), resulting in the camping vehicle being prone to traction difficulty and lack of hand tracking, affecting the user experience.

[0005] In order to achieve one or part or all of the above-mentioned purposes or other purposes, the utility model proposes an electric camping car with automatic power adjustment, including a body, a plurality of wheels installed at the bottom of the body, and a pull rod, a handle, a driving device and a power supply installed on the body, wherein the pull rod is made of metal, and the bottom end of the pull rod is connected to one side of the body, the handle is arranged at the top of the pull rod, a primary main board is arranged in the handle, a stress sensor electrically connected to the primary main board is arranged in the pull rod, the driving device is electrically connected to the primary main board, the driving device is used to drive the wheels to roll, and the power supply is electrically connected to the primary main board and the driving device respectively. When the pull rod is subjected to axial tension or pressure, the stress sensor will generate a corresponding force signal, and the primary main board is used to receive the force signal and adjust the driving device to a preset power according to the force signal, thereby changing the rotation speed of the wheel.

[0006] Preferably, the stress sensor is a stress sheet sensor, which is attached to the inner wall of the pull rod along the length direction of the pull rod and is electrically connected to the primary main board.

[0007] Preferably, a secondary main board is also provided on the vehicle body, and the primary main board is electrically connected to the driving device via the secondary main board.

[0008] Preferably, a display is provided on the handle, and the display is electrically connected to the primary mainboard.

[0009] Preferably, the handle is provided with a control button, and the control button is electrically connected to the primary main board.

[0010] Preferably, a connecting block is fixedly provided at the bottom end of the pull rod, and connecting rods are symmetrically connected to both sides of the connecting block. One end of the connecting rod away from the connecting block is hinged to the left side of the front end of the vehicle body, and the other end of the connecting rod away from the connecting block is hinged to the right side of the front end of the vehicle body, and the hinge axes of the two connecting rods are coaxial.

[0011] Preferably, the vehicle body is composed of a plurality of rods, and the vehicle body can be folded along the length direction.

[0012] Preferably, a foldable storage box is provided on the vehicle body, and the opening of the storage box is arranged upward.

[0013] Preferably, the wheels include more than one front wheel and more than one rear wheel, the front wheels are universal wheels, and the driving device can drive the rear wheels to rotate synchronously.

[0014] Preferably, the driving device includes more than one hub motor, and the hub motors are arranged in a one-to-one correspondence with the rear wheels and are respectively arranged in the corresponding rear wheels. The output shaft of the hub motor is coaxial with the rear wheel and passes through the side wall of the rear wheel and is fixedly connected to the corresponding position of the bottom of the vehicle body. The hub motor is electrically connected to the primary main board.

[0015] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0016] After adopting the above-mentioned electric camper, the user can lift the top of the pull rod through the handle and use the pull rod to pull the camper to move. At this time, the two ends of the pull rod are pulled by the user's arm and the car body respectively, and the pull rod will produce a certain deformation in the axial direction. At the same time, its deformation will drive the internal stress sensor to stretch synchronously, so that the stress sensor sends out different force signals. The primary main board will obtain the force signal in real time, and send a corresponding control signal to the drive device according to the range of the force signal, so that the drive device operates according to the preset power corresponding to the control signal. For example, when the tension on the pull rod increases, it means that the user is speeding up or climbing a slope, and the effort spent on pulling the camper becomes greater. At this time, the drive device will increase the operating power according to the change in the resistance value of the stress sheet sensor, increase the speed of the wheel, thereby reducing the burden on the user to pull the camper. The same is true when the user pushes the pull rod, so that the camper can make adaptive adjustments to the speed of the wheel according to the pulling force when the user is pulling, avoiding the camper from being laborious to pull and not following the hand, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] in:

[0019] Figure 1 It is a three-dimensional diagram of the utility model from a top view;

[0020] Figure 2 This is an exploded view of the utility model when viewed from an upward angle;

[0021] Figure 3 It is a partial view of an exploded view of some components in the utility model.

[0022] In the figure: 1. vehicle body; 11. control box; 12. storage box; 2. wheels; 21. front wheel; 22. rear wheel; 3. pull rod; 31. handle; 32. display; 33. control button; 4. drive device; 41. hub motor; 5. power supply; 6. primary main board; 7. stress sensor; 8. secondary main board; 9. connecting block; 91. connecting rod. DETAILED DESCRIPTION

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0024] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0026] like Figure 1-3 As shown, an electric camping vehicle with automatic power adjustment includes a body 1, a plurality of wheels 2 installed at the bottom of the body 1, and a pull rod 3, a handle 31, a drive device 4 and a power supply 5 installed on the body 1. The pull rod 3 is made of metal, and the bottom end of the pull rod 3 is hinged to one side of the body 1. The handle 31 is arranged at the top of the pull rod 3. A primary main board 6 is arranged in the handle 31. A stress sensor 7 electrically connected to the primary main board 6 is arranged in the pull rod 3. The drive device 4 is electrically connected to the primary main board 6. The drive device 4 is used to drive the wheels 2 to roll. The power supply 5 is electrically connected to the primary main board 6 and the drive device 4 respectively. When the pull rod 3 is subjected to axial tension or pressure, the stress sensor 7 will generate a corresponding force signal. The primary main board 6 is used to receive the force signal and adjust the drive device 4 to a preset power according to the force signal, thereby changing the rotation speed of the wheel 2.

[0027] Specifically, the power supply 5 supplies power to the stress sensor 7 through the primary main board 6; the driving device 4 can be a double-headed motor, and both ends of the rotating shaft of the double-headed motor are respectively connected to the two wheel shafts 2 located at the rear end of the vehicle body 1. When the rotating shaft of the double-headed motor rotates, it will drive the corresponding two wheels 2 to rotate, thereby helping the camper to move forward (not shown in the drawings).

[0028] In one embodiment, the stress sensor 7 may be an optical fiber sensor (not shown in the drawings). The optical fiber sensor can be purchased through market channels and will not be elaborated in this embodiment.

[0029] Furthermore, the stress sensor 7 is a stress sheet sensor, which is attached to the inner wall of the pull rod 3 along the length direction of the pull rod 3 and is electrically connected to the primary main board 6 .

[0030] Specifically, the pull rod 3 made of metal material has good deformation recovery ability, which can better adapt to the stress detection method of the stress gauge sensor, and is conducive to long-term repeated use; the resistance value of the stress gauge sensor is the force signal, and the first-level main board 6 will generate a corresponding control signal after obtaining the force signal, and control the drive device 4 to run according to the preset power through the control signal. The force signal within a certain range corresponds to a control signal. For example, when the resistance value is 10-20 ohms, the first-level main board 6 will generate a first control signal, and when the resistance value is 20-30 ohms, the first-level main board 6 will generate a second control signal, and so on. Different control signals correspond to different preset powers of the drive device 4.

[0031] In this embodiment, the user can lift the top of the pull rod 3 through the handle 31 and use the pull rod 3 to pull the camper to move. At this time, the two ends of the pull rod 3 are pulled by the user's arm and the car body 1 respectively, and the pull rod 3 will produce a certain deformation in the axial direction. At the same time, its deformation will drive the internal stress sheet sensor to stretch synchronously, so that the resistance value of the stress sheet sensor changes. The primary main board 6 will obtain the force signal in real time, and send a corresponding control signal to the drive device 4 according to the range of the force signal, so that the drive device 4 operates according to the preset power corresponding to the control signal. For example, when the tension on the pull rod 3 increases, it means that the user is speeding up or climbing a slope, and the effort spent on pulling the camper becomes greater. At this time, the drive device 4 will increase the operating power according to the change in the resistance value of the stress sheet sensor, and increase the rotation speed of the wheel 2, thereby reducing the burden of the user towing the camper. The same is true when the user pushes the pull rod 3, so that the camper can make adaptive adjustments to the rotation speed of the wheel 2 according to the pulling force when the user is pulling, avoiding the camper from being laborious to pull and not following the hand, thereby improving the user experience.

[0032] Furthermore, a secondary mainboard 8 is provided on the vehicle body 1, and the primary mainboard 6 is electrically connected to the driving device 4 through the secondary mainboard 8. The secondary mainboard 8 is used to receive a control signal and drive the driving device 4 to operate according to the corresponding preset power according to the control signal.

[0033] Specifically, a control box 11 is provided at the bottom of the vehicle body 1, the power source 5 is a rechargeable battery, and the rechargeable battery and the secondary mainboard 8 are both arranged in the control box 11 to protect the battery and the secondary mainboard 8 from being knocked by foreign objects.

[0034] Furthermore, a display 32 is provided on the handle 31, and the display 32 is electrically connected to the primary main board 6. The primary main board 6 can obtain the rotation speed information of the wheel 2 through the secondary main board 8, and the rotation speed information of the wheel 2 will be displayed through the display 32, so that the user can intuitively know the rotation speed of the wheel 2.

[0035] Furthermore, a control button 33 is provided on the handle 31, and the control button 33 is electrically connected to the primary main board 6. The control button 33 can send a start / stop signal and an acceleration / deceleration signal to the secondary main board 8 through the primary main board 6, so that the user can use the control button 33 to control the rotation speed of the wheel 2, thereby achieving the purpose of controlling the start / stop, acceleration and deceleration of the camper. This is a prior art and will not be elaborated in this embodiment.

[0036] Furthermore, a connecting block 9 is fixedly provided at the bottom end of the pull rod 3, and connecting rods 91 are symmetrically connected to both sides of the connecting block 9. One end of the connecting rod 91 away from the connecting block 9 is hinged to the left side of the front end of the vehicle body 1, and the other end of the connecting rod 91 away from the connecting block 9 is hinged to the right side of the front end of the vehicle body 1. The hinge axes of the two connecting rods 91 are coaxial, so that the connection points between the pull rod 3 and the vehicle body 1 are increased through the two connecting rods 91, thereby improving the connection strength and connection stability between the two. At the same time, the connecting rod 91 can be flipped around the hinged end to approach the front end of the vehicle body 1, so that the pull rod 3 can be placed against the front end of the vehicle body 1.

[0037] Furthermore, the vehicle body 1 is composed of a plurality of rods, and the vehicle body 1 can be folded along the length direction. A foldable storage box 12 is provided on the vehicle body 1, and the opening of the storage box 12 is arranged upward.

[0038] Specifically, the vehicle body 1 can be purchased through market channels, which will not be elaborated in this embodiment; the storage box 12 is made of cloth material, so that the user can place small items on the camping car, and it is also convenient to fold and store together with the vehicle body 1.

[0039] Furthermore, the wheels 2 include more than one front wheel 21 and more than one rear wheel 22. The front wheel 21 is a universal wheel. The driving device 4 can drive the rear wheel 22 to rotate synchronously, and the rear wheel 22 is used to help the camper move forward. The user can help the camper turn by swinging the front wheel 21.

[0040] Furthermore, the driving device 4 includes more than one hub motor 41, and the hub motor 41 is arranged in a one-to-one correspondence with the rear wheel 22 and is respectively arranged in the corresponding rear wheel 22. The output shaft of the hub motor 41 is coaxial with the rear wheel 22, and passes through the side wall of the rear wheel 22 and is fixedly connected to the corresponding position of the bottom of the vehicle body 1. The hub motor 41 is electrically connected to the primary main board 6 through the secondary main board 8. The rechargeable battery can power the hub motor 41 through the secondary main board 8. The secondary main board 8 can simultaneously control the rotation of the hub motor 41, thereby driving the rear wheels 22 to rotate at the same time to provide forward power for the vehicle body 1, thereby helping the user to tow the camper.

[0041] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. An electric camping car with automatic power adjustment, characterized in that: include: A vehicle body, a plurality of wheels mounted on the bottom of the vehicle body, and a pull rod, a handle, a driving device and a power source mounted on the vehicle body; The pull rod is made of metal, the bottom end of the pull rod is connected to one side of the vehicle body, the handle is arranged at the top end of the pull rod, a primary main board is arranged in the handle, and a stress sensor electrically connected to the primary main board is arranged in the pull rod; The driving device is electrically connected to the primary mainboard, and the driving device is used to drive the wheels to roll; The power supply is electrically connected to the primary mainboard and the driving device respectively; When the pull rod is subjected to axial tension or pressure, the stress sensor will generate a corresponding force signal. The primary main board is used to receive the force signal and adjust the drive device to a preset power according to the force signal, thereby changing the rotation speed of the wheel.

2. The electric camper with automatic power adjustment according to claim 1, characterized in that: The stress sensor is a stress sheet sensor, which is attached to the inner wall of the pull rod along the length direction of the pull rod and is electrically connected to the primary main board.

3. The electric camper with automatic power adjustment according to claim 1, characterized in that: The vehicle body is also provided with a secondary main board, and the primary main board is electrically connected to the driving device through the secondary main board.

4. The electric camper with automatic power adjustment according to claim 1, characterized in that: The handle is provided with a display, and the display is electrically connected to the primary mainboard.

5. The electric camper with automatic power adjustment according to claim 1, characterized in that: The handle is provided with a control button, and the control button is electrically connected to the primary main board.

6. The electric camper with automatic power adjustment according to claim 1, characterized in that: A connecting block is fixedly provided at the bottom end of the pull rod, and connecting rods are symmetrically connected to both sides of the connecting block. One end of the connecting rod away from the connecting block is hinged to the left side of the front end of the vehicle body, and the other end of the connecting rod away from the connecting block is hinged to the right side of the front end of the vehicle body. The hinge axes of the two connecting rods are coaxial.

7. The electric camper with automatic power adjustment according to claim 1, characterized in that: The vehicle body is composed of a plurality of rod bodies, and the vehicle body can be folded along the length direction.

8. The electric camper with automatic power adjustment according to claim 7, characterized in that: A foldable storage box is arranged on the vehicle body, and the opening of the storage box is arranged upward.

9. The electric camper with automatic power adjustment according to claim 1, characterized in that: The wheels include more than one front wheel and more than one rear wheel, the front wheels are universal wheels, and the driving device can drive the rear wheels to rotate synchronously.

10. The electric camper with automatic power adjustment according to claim 9, characterized in that: The driving device includes more than one hub motor, which is arranged in a one-to-one correspondence with the rear wheel and is respectively arranged in the corresponding rear wheel. The output shaft of the hub motor is coaxial with the rear wheel and passes through the side wall of the rear wheel and is fixedly connected to the corresponding position of the bottom of the vehicle body. The hub motor is electrically connected to the primary main board.

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