Disclosure of Invention
The invention mainly aims to provide an electric power assisting device, which aims to save physical strength of a user and enable the use to be more convenient.
In order to achieve the above object, the present invention provides an electric power assisting device, which includes a main body for loading an object or a living body, an electric wheel set for loading the main body, and a battery assembly and a main control board arranged on the main body, wherein the main control board is electrically connected to the battery assembly, and the electric wheel set is electrically connected to the main control board; the electric power assisting device also comprises a sensing device in signal connection with the main control board;
the sensing device is used for sensing the moving trend of a user;
the main control panel is used for controlling the moving direction and the moving speed of the electric power assisting device according to the moving trend of the user sensed by the sensing device.
Preferably, a push-pull frame is arranged on the main body, and the sensing device is arranged on the push-pull frame.
Preferably, the sensing device comprises a direction intention sensing module and a speed intention sensing module electrically connected with the main control board; the direction intention sensing module and the speed intention sensing module are electrically connected with the main control board.
Preferably, the direction intention sensing module comprises a first detection device and a first signal source which are arranged on the push-pull frame, and the first detection device and the first signal source slide relatively on the push-pull frame to approach or separate from each other; the first detection device is electrically connected with the main control board, and is used for detecting the displacement between the first detection device and the first signal source and outputting an electric signal with corresponding magnitude;
the speed intention sensing module comprises a second detection device and a second signal source which are arranged on the push-pull frame, and the second detection device and the second signal source slide relatively on the push-pull frame to be close to or far away from each other; the second detection device is electrically connected with the main control board, and is used for detecting the displacement between the second detection device and the second signal source and outputting an electric signal with a corresponding magnitude.
Preferably, the push-pull frame comprises a rod body and a handle, one end of the rod body is connected with the main body, and the other end of the rod body is rotatably connected with the handle;
the first detection device is arranged on the handle, and the first signal source is arranged on the rod body; the second detection device and the second signal source are arranged on the handle or the rod body;
or the first detection device is arranged on the rod body, and the first signal source is arranged on the handle; the second detection device and the second signal source are arranged on the handle or the rod body.
Preferably, the push-pull frame further comprises an adapter, the other end of the rod body is detachably connected with the adapter, and the adapter is rotatably connected with the handle;
the first detection device is arranged on the handle, and the first signal source is arranged on the adapter; the second detection device and the second signal source are arranged on the handle or the adapter;
or, the first detection device is arranged on the adapter, and the first signal source is arranged on the handle; the second detection device and the second signal source are arranged on the handle or the adapter.
Preferably, the first detection device is a hall sensor, and the first signal source is a magnet; or, the first detection device is a capacitance sensor, and the first signal source is an electrical conductor; or, the first detection device is a photosensitive device, and the first signal source is a light-emitting device.
Preferably, the second detection device is a hall sensor, and the second signal source is a magnet; or, the second detection device is a capacitance sensor, and the second signal source is an electric conductor; or, the second detection device is a photosensitive device, and the second signal source is a light-emitting device.
Preferably, the direction intention sensing module and/or the speed intention sensing module is a potentiometer or an infrared/laser ranging device or an ultrasonic ranging device.
Preferably, a first wireless communication device is arranged on the handle, a second wireless communication device corresponding to the first wireless communication device is arranged on the main control board, or the main control board is electrically connected with the second wireless communication device corresponding to the first wireless communication device;
the first detection device and the second detection device are electrically connected with the first wireless communication device, and the second wireless communication device is electrically connected with the main control board.
Preferably, the sensing device comprises a force measuring module arranged on the push-pull frame and used for detecting the magnitude and direction of force directly or indirectly applied to the force measuring module by a user and outputting a corresponding electric signal to the main control board to control the moving speed and the moving direction of the electric power assisting device.
Preferably, the force measuring module comprises a first force measuring unit and a second force measuring unit which are arranged on the push-pull frame, and the first force measuring unit and the second force measuring unit are electrically connected with the main control board; wherein,
the first force measuring unit is used for detecting the force directly or indirectly exerted on the first force measuring unit by a user and outputting an electric signal with corresponding magnitude;
the second force measuring unit is used for detecting the force directly or indirectly exerted on the second force measuring unit by a user and outputting an electric signal with corresponding magnitude;
and the main control board is used for controlling the moving speed and the moving direction of the electric power assisting device according to the magnitude of the electric signal output by the first force measuring unit and the magnitude of the electric signal output by the second force measuring unit.
Preferably, the sensing device comprises a rotary reset mechanism and a moving member which are arranged on the main body, the moving member is connected with the main body in a sliding manner, one end of the flexible traction member is connected with the rotary reset mechanism and wound on the rotary reset mechanism, and the other end of the flexible traction member penetrates through the moving member and is connected with the handle;
a third signal source is arranged at a position, corresponding to the moving part, on the main body, and a third detection device is arranged on the moving part; or a third detection device is arranged on the main body corresponding to the moving part, and a third signal source is arranged on the moving part;
the third detection device is used for detecting the relative displacement between the third detection device and the third signal source and outputting an electric signal with corresponding size and direction adjustment for the main control board;
a coded disc is arranged on the rotary reset mechanism, and a fourth detection device is correspondingly arranged on the main body; the fourth detection device is used for detecting the rotation amount of the rotary reset mechanism by identifying the code disc and outputting an electric signal for speed regulation of the main control board; or the rotary reset mechanism is provided with a fourth detection device, and the main body is correspondingly provided with a coded disc; the fourth detection device is used for detecting the rotation amount of the rotary reset mechanism by identifying the code disc and outputting an electric signal for speed regulation of the main control panel.
Preferably, the sensing device comprises a signal transmitter, three signal receivers electrically connected with the main control board and used for receiving wireless signals transmitted by the signal transmitter are arranged on the main body, and the three signal receivers are distributed on the main body in a triangular shape.
Preferably, the sensing device comprises a passive detection device arranged on the main body, the passive detection device is electrically connected with the main control board, and the passive detection device is used for detecting the relative position of a user and the electric power assisting device.
Preferably, the passive detection device is an ultrasonic device or an image pickup device or a laser device.
The electric power assisting device is composed of the main body, the electric wheel set arranged on the main body, the battery assembly and the main control board, and can load articles or living bodies; and moreover, the electric power assisting device can sense the moving trend of a user and send the moving trend to the main control board by configuring the sensing device electrically connected with the main control board, and the moving speed and direction of the electric power assisting device are adjusted by the main control board, so that the electric power assisting device is more convenient to use.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides an electric power assisting device.
Referring to fig. 1 to 3, in an embodiment of the present invention, the electric power assisting device includes a main body 10, an electric wheel set 20 disposed on the main body 10, a battery assembly 30, and a main control board 40, wherein the electric wheel set 20 is used for carrying the main body 10; the main control board 40 is electrically connected with the battery assembly 30, and the electric wheel set 20 is electrically connected with the main control board 40; the battery assembly 30 includes a rechargeable battery for providing a working power supply to the main control board 40 and providing a working power supply to the electric wheel set 20 through the main control board 40; the main control board 40 may be an integral circuit board or may be composed of a plurality of circuit boards; the electric wheel set 20 may be a wheel with a hub motor, or a combination of an independent wheel and a driving motor, wherein the connection mode of the wheel and the main body 10 is not limited, and may be a common bearing connection mode or a universal connection mode; the number of the wheels is not limited, and one or more wheels can be arranged to bear the main body 10 and the components on the main body 10 and move according to the requirement, for example, for convenience of placement, two front wheels and two rear wheels can be arranged to bear the main body 10 or one front wheel and one rear wheel can be arranged to bear the main body 10; the front wheels and the rear wheels can be set as driving wheels or driven wheels according to actual needs, wherein the driven wheels can be not arranged or can be 1 or more; the main body 10 may be a case, a stroller frame, a hand truck frame, a wheelchair, etc., and may be mounted to the electric wheel assembly 20, the battery assembly 30, and the main control board 40 to form an electric power assist device having functions of a luggage case, a stroller, a hand truck, a wheelchair, etc.
In this embodiment, in order to control the moving direction and the moving speed of the electric power assisting device, the electric power assisting device further includes a sensing device 50 in signal connection with the main control board 40, and the sensing device 50 is used for sensing the moving trend of the user; the main control board 40 is used for controlling the moving direction and the moving speed of the electric power assisting device according to the moving trend of the user sensed by the sensing device 50.
The signal connection between the sensing device 50 and the main control board 40 may be a wireless signal connection or a wired electrical connection. The sensing device 50 senses a movement trend of the user, specifically, senses an operation intention of the user or senses a relative position between the user and the electric power assisting device, and separates two control signals, namely a direction control signal and a speed control signal, from the sensed movement trend of the user to control the movement direction and the movement speed of the electric power assisting device. For example, the sensing device 50 is a device for detecting a linear displacement or a curved displacement of the component, and converts the detected linear displacement or curved displacement into an electrical signal to be sent to the main control board 40, so as to control the moving direction and moving speed of the electric power assisting device. Alternatively, the sensing device 50 is a sensor for detecting the direction and magnitude of the force applied by the user, and converts the force applied by the user into an electrical signal to be sent to the main control board 40, so as to control the moving direction and the moving speed of the electric power assisting device. Or, the sensing device 50 detects the relative position between the user and the electric power assisting device through passive detection or wireless detection, and outputs a corresponding electric signal to the main control board 40, so as to control the moving direction and the moving speed of the electric power assisting device.
It can be understood that, by the above-mentioned several ways, the user can send an electric signal containing a direction control intention and/or a speed control intention to the main control board 40 through the sensing device 50, thereby controlling the moving direction and/or the moving speed of the electric power assisting device.
When the sensing device 50 senses that the movement trend of the user is speed control, the main control board 40 receives an electrical signal corresponding to the speed control, and correspondingly adjusts the rotation speed of the electric wheel set 20, so as to achieve the purpose of adjusting the traveling speed of the electric power assisting device.
When the sensing device 50 senses that the movement trend of the user is the direction control, the main control board 40 receives an electrical signal corresponding to the direction control, and correspondingly adjusts the steering of the electric power assisting device, so as to control the traveling direction of the electric power assisting device. The moving direction of the electric power assisting device can be adjusted by controlling the speed of the left wheel and the right wheel of the electric wheel set 20, for example, when the speed of the left wheel is higher than that of the right wheel, the electric power assisting device turns to the right; when the speed of the right wheel is higher than that of the left wheel, the electric power assisting device turns to the left. Whereas if speed control is to be performed during steering, different turning radii and turning speeds can be combined.
It can be understood that the electric power assisting device provided by the invention mainly comprises a main body 10, an electric wheel set 20 arranged on the main body 10, a battery assembly 30 and a main control board 40, so that when loading articles or living bodies, the labor intensity of a user is reduced through electric power assistance, thereby saving the physical strength of the user and facilitating the user; in addition, the sensing device 50 electrically connected with the main control panel 40 is configured, so that the movement trend of the user can be sensed and sent to the main control panel 40, and the main control panel 40 can adjust the movement speed and the movement direction of the electric power assisting device, thereby being more convenient to use.
In the above embodiment, referring to fig. 1 and 2, in order to further improve the convenience of operation, the main body 10 is provided with a push-pull frame 60. The electric power assisting device can be conveniently pushed or pulled through the push-pull frame 60. The sensing device 50 can be disposed on the push-pull frame 60 for convenient operation.
In the embodiment of the push-pull frame 60, the sensing device 50 may be implemented by detecting a linear displacement or a curved displacement of a component, and referring to fig. 4, the sensing device 50 includes a direction intention sensing module 51 and a speed intention sensing module 52 electrically connected to the main control board 40; the direction intention sensing module 51 and the speed intention sensing module 52 are in signal connection with the main control board 40; the direction intention sensing module 51 is used for a user to perform direction control and output an electric signal corresponding to the direction control; the speed intention sensing module 52 is used for the user to control the speed and output an electric signal corresponding to the speed control.
In this embodiment, referring to fig. 5 to 7, the direction intention sensing module 51 includes a first detecting device 511 and a first signal source 512 disposed on the push-pull frame 60, wherein the first detecting device 511 and the first signal source 512 slide relatively on the push-pull frame 60 to approach or separate from each other; the first detecting device 511 is electrically connected to the main control board 40, the first detecting device 511 is configured to detect a displacement amount, i.e., a relative position distance, between the first detecting device 511 and the first signal source 512, and output an electrical signal with a corresponding magnitude, and the main control board 40 correspondingly adjusts the steering of the electric power assisting device according to the electrical signal and a preset adjusting mechanism, so as to control a moving direction of the electric power assisting device.
The speed intention sensing module 52 includes a second detecting device 521 and a second signal source 522 which are arranged on the push-pull frame 60, and the second detecting device 521 and the second signal source 522 slide relatively close to or away from each other on the push-pull frame 60; the second detecting device 521 is electrically connected to the main control board 40, and the second detecting device 521 is configured to detect a displacement amount, i.e., a relative position distance, between the second detecting device 521 and the second signal source 522, and output an electrical signal with a corresponding magnitude. The main control board 40 correspondingly adjusts the speed of the electric wheel set 20 according to the electric signal and a preset adjustment mechanism, so as to control the moving speed of the electric power assisting device.
In this embodiment, for the direction intention sensing module 51, two first signal sources 512 may be further disposed on the push-pull frame 60, and the two first signal sources 512 are disposed at a distance from the first detecting device 511. Thus, the user can control the first detecting device 511 to slide between the two first signal sources 512, and the first detecting device 511 outputs an electric signal with a corresponding magnitude by changing the displacement between the first detecting device 511 and the two first signal sources 512, and the main control board 40 correspondingly adjusts the steering of the electric power assisting device according to the electric signal and a preset adjusting mechanism, so as to control the moving direction of the electric power assisting device.
It should be noted that, a first sliding position 101 may also be disposed on the push-pull frame 60 for the first detecting device 511 and the first signal source 512 to slide closer to or farther away from each other. Similarly, a second sliding position (not shown) can be provided on the push-pull frame 60 for the second detecting device 521 and the second signal source 522 to slide closer to or away from each other. The first sliding position 101 is preferably a groove structure.
Preferably, the first detecting device 511 is a hall sensor, and the first signal source 512 is a magnet. When the Hall sensor slides to be close to or far from the magnet, the output voltage changes from small to large or from large to small. Thus, the main control board 40 can control the moving direction (turning radius) of the electric power assisting device according to the magnitude of the electric signal output by the hall sensor.
It should be noted that, when there are two first signal sources 512, the polarities of the two first signal sources 512 facing the hall sensor are opposite. If one of the first signal sources 512 is an N pole at the end facing the hall sensor and the other first signal source 512 is an S pole at the end facing the hall sensor, the output voltage of the hall sensor changes from small to large or from large to small when the hall sensor slides from an N pole magnet to an S pole magnet; on the contrary, when the Hall sensor slides from the S pole magnet to the N pole magnet, the output voltage of the Hall sensor changes from large to small or from small to large. In the embodiment of the two magnets, the output voltage of the hall sensor also changes from small to large or from large to small, and compared with the embodiment of one magnet, the embodiment of the two magnets widens the voltage change range of the hall sensor, increases the anti-interference capability, and is easier to adjust and control conveniently.
For the speed intention sensing module 52, two second signal sources 522 may be disposed on the push-pull frame 60, and the specific embodiment thereof is substantially the same as that of the direction intention sensing module 51, and thus, the description thereof is omitted.
Preferably, the second detecting device 521 is a hall sensor, and the second signal source 522 is a magnet. When the Hall sensor slides to be close to or far from the magnet, the output voltage changes from small to large or from large to small. Therefore, the main control board 40 can correspondingly control the moving speed of the electric power assisting device according to the magnitude of the electric signal output by the hall sensor.
It should be noted that, when there are two second signal sources 522, the polarities of the two second signal sources 522 facing the hall sensor are opposite. If one end of one of the second signal sources 522, which faces the hall sensor, is an N pole, and one end of the other second signal source 522, which faces the hall sensor, is an S pole, when the hall sensor slides from an N pole magnet to an S pole magnet, the output voltage of the hall sensor changes from small to large or from large to small; on the contrary, when the Hall sensor slides from the S pole magnet to the N pole magnet, the output voltage of the Hall sensor changes from large to small or from small to large. In the embodiment of the two magnets, the output voltage of the hall sensor also changes from small to large or from large to small, and compared with the embodiment of one magnet, the embodiment of the two magnets widens the voltage change range of the hall sensor, increases the anti-interference capability, and is easier to adjust and control conveniently.
It should be further noted that the hall sensor may be replaced by a capacitive sensor, a photosensitive device, or other devices for measuring displacement or rotation, and correspondingly, the first signal source 512 and the second signal source 522 are replaced by signal sources used in cooperation with the capacitive sensor, the photosensitive device, or the like, where the signal source used in cooperation with the capacitive sensor may be an electrical conductor, and the signal source used in cooperation with the photosensitive device may be a light-emitting device. Wherein, the photosensitive device is preferably an infrared sensor, and the light-emitting device can be an infrared light-emitting tube correspondingly.
Furthermore, it should be noted that the direction intention sensing module 51 and/or the speed intention sensing module 52 may also be implemented by using a potentiometer. The output of the electric signal corresponding to the speed control and/or the direction control is realized by changing the resistance value of the potentiometer.
In this embodiment, the potentiometer can be replaced by a distance measuring device such as an infrared/laser distance measuring device or an ultrasonic distance measuring device. And outputting corresponding speed control and/or direction control electric signals through the distance information returned by the distance measuring device.
The push-pull frame 60 may further have a structure, referring to fig. 1, 2, 5 to 7, where the push-pull frame 60 includes a rod 61 and a handle 63, one end of the rod 61 is connected to the main body 10, and the other end of the rod 61 is rotatably connected to the handle 63; the rotating handle 63 is convenient for the user to hold and operate. The push-pull frame 60 may be configured as a multi-rod structure or a multi-handle structure as shown in fig. 2. The first detection device 511 is disposed on the handle 63, and the first signal source 512 is disposed on the rod 61; the second detecting device 521 and the second signal source 522 are disposed on the handle 63 or the rod 61.
Of course, the positions of the first detecting device 511 and the first signal source 512 can be interchanged, and it is not limited that they are mounted on the rod 61 or the handle 63. For example, the first signal source 512 is disposed on the handle 63, and the first detecting device 511 is disposed on the rod 61. The first sliding portion 101 can be disposed on the rod 61 or the handle 63 to allow the first detecting device 511 or the first signal source 512 to slide.
Further, the push-pull frame 60 further comprises an adapter 62, the other end of the rod body 61 is detachably connected with the adapter 62, and the adapter 62 is rotatably connected with the handle 63; the first detection device 511 is disposed on the handle 63, and the first signal source 512 is disposed on the adaptor 62; the second detection device 521 and the second signal source 522 are disposed on the handle 63 or the adaptor 62.
Of course, the positions of the first detecting device 511 and the first signal source 512 can be interchanged, and it is not limited that they are mounted on the adaptor 62 or the handle 63. For example, the first signal source 512 is disposed on the handle 63, and the first detecting device 511 is disposed on the adaptor 62. The first sliding position 101 may be disposed on the adaptor 62 or the handle 63 to allow the first detecting device 511 or the first signal source 512 to slide.
Preferably, the first sliding position 101 is arc-shaped, and the second sliding position is linear.
In this embodiment, the first sliding position 101 is arranged in an arc shape, and the moving direction of the electric power assisting device is controlled by rotating the handle 63, which is simple to operate and convenient for users to use. In addition, a spring may be provided to return the handle 63 after rotation.
Preferably, the handle 63 includes a handle body 630 having a slot, and a sliding member 631 disposed in the handle body 630 and sliding along the slot, the second detecting device 521 is disposed in the slot, the two second signal sources 522 are disposed on the sliding member 631 at intervals, preferably, on a side of the sliding member 631 facing the slot, and after being installed, the second detecting device 521 is located between the two second signal sources 522 in the slot; the handle body 630 is provided with a cover 632 covering the groove, and the cover 632 has a sliding groove for the handle of the sliding member 631 to extend and slide. In this embodiment, the slot body is the second sliding position.
Further, a first wireless communication device (not shown) is disposed on the handle 63, a second wireless communication device (not shown) corresponding to the first wireless communication device (not shown) is disposed on the main control board 40, or a second wireless communication device (not shown) corresponding to the first wireless communication device (not shown) is electrically connected to the main control board 40; the first detection device 511 and the second detection device 521 are electrically connected to the first wireless communication device, and the second wireless communication device is electrically connected to the main control board 40. The first wireless communication device and the second wireless communication device can be radio frequency devices, wireless network devices, Bluetooth devices, infrared devices, electromagnetic wave devices and other wireless devices. It can be understood that, because the adaptor 62 is detachably connected with the rod body 61, the adaptor 62 and the handle 63 can be taken off from the rod body 61 and used as a remote control device, and the detection signals are wirelessly transmitted to realize speed and direction control, so that the use by a user is facilitated.
In this embodiment, the handle 63 is further provided with a gravity sensing device electrically connected to the first wireless communication device, and outputs a corresponding speed adjusting signal or direction adjusting signal by sensing a change in gravity of the handle 63.
In this embodiment of the push-pull frame 60, it should be noted that the position of the sensor for measuring force or deformation can also be adaptively set according to the shape of the push-pull frame 60, for example, the sensor can be set on the handle 63 to directly measure the pressure applied to the handle 63 by the user or the twisting force of the handle 63 relative to the rod body 61, thereby determining the intention of the operation; or on the rod body 61, by measuring the pulling force or extrusion force applied to the rod body 61 by the user through the handle 63, or by arranging the rod body 61 in two sections, measuring the pulling force or extrusion force between the two sections of the rod body 61, thereby judging the operation intention; alternatively, such a sensor may be disposed at a coupling position between the stick body 61 and the body 10 to measure a tensile force, a pressing force, or a twisting force directly or indirectly applied to the stick body 61 by a user, thereby determining an intention of the operation.
In the embodiment of the push-pull frame 60, the sensing device 50 may be a sensor for detecting a force directly or indirectly exerted by a user, and the sensing device 50 includes a force measuring module (not shown) disposed on the push-pull frame 60 for detecting a magnitude and a direction of the force directly or indirectly exerted by the user, and outputting a corresponding electrical signal to the main control board 40 for controlling a moving speed and a moving direction of the electric power assisting device. The force measuring module can adopt one force measuring sensor capable of detecting the direction and the magnitude of force to realize direction and speed intention sensing, and can also adopt two or more force measuring sensors to realize direction and speed intention sensing in a matching way.
In this embodiment, preferably, the force measuring module includes a first force measuring unit (not shown) and a second force measuring unit (not shown) disposed on the push-pull frame 60, and the first force measuring unit and the second force measuring unit are electrically connected to the main control board 40; the first force measuring unit is used for detecting the pressure directly or indirectly exerted on the first force measuring unit by a user and outputting an electric signal with corresponding magnitude; the second force measuring unit is used for detecting the pressure directly or indirectly exerted on the second force measuring unit by a user and outputting an electric signal with corresponding magnitude; the main control board 40 is used for controlling the moving speed and the moving direction of the electric power assisting device according to the magnitude of the electric signal output by the first force measuring unit and the magnitude of the electric signal output by the second force measuring unit.
In this embodiment, the movement of the electric assist apparatus is controlled by detecting a force applied directly or indirectly by a user. The mounting positions of the first force measuring unit and the second force measuring unit are not limited, and preferably, the first force measuring unit and the second force measuring unit are bilaterally symmetrical on the push-pull frame 60 for convenient operation. When the electric signal output by the first force measuring unit is larger than the electric signal output by the second force measuring unit, the main control board 40 can control the electric power assisting device to rotate left; when the electrical signal output by the second force measuring unit is greater than the electrical signal output by the first force measuring unit, the main control board 40 can control the electric power assisting device to rotate right; in the process of controlling the moving direction of the electric power assisting device, the main control board 40 may also control the speed of the electric power assisting device according to the magnitude of the electric signal, where the larger the output electric signal is, the faster the speed is, and the smaller the output electric signal is, the smaller the speed is. Therefore, the turning radius and the turning speed of the electric power assisting device can be controlled according to the electric signals output by the first force measuring unit and the electric signals output by the second force measuring unit.
In this embodiment, the first force measuring unit and the second force measuring unit may be implemented by using a pressure sensor, a load cell, a strain gauge, and the like.
Furthermore, the sensing device 50 may be alternatively implemented as follows, or may be implemented in combination with the other embodiments of the sensing device 50, referring to fig. 8 and 9, the sensing device 50 of this embodiment includes a flexible pulling member 70, a handle 80, a rotary return mechanism 90 and a moving member 100, the rotary return mechanism 70 and the moving member 100 are disposed on the main body 10, and the rotary return mechanism 90 is similar to a tape measure structure; the moving member 100 is slidably connected to the main body 10, and the moving member 100 can slide linearly or curvilinearly relative to the main body 10, for example, as shown in fig. 8, the moving member 100 is disposed around the rotary return mechanism 90 and is rotatably connected to the main body 10; one end of the flexible traction member 70 is connected to the rotary reset mechanism 90 and wound around the rotary reset mechanism 90, and the other end of the flexible traction member 70 penetrates the moving member 100 and is connected to the handle 80. The flexible pulling member 70 may be one or more of a rope, a rubber band, a spring, etc.
A third signal source (not shown) is disposed on the main body 10 corresponding to the moving member 100, and a third detecting device (not shown) is disposed on the moving member 100; in this embodiment, the third detection device is configured to detect a relative displacement between the third detection device and the third signal source, and output an electrical signal with a corresponding magnitude and for the main control board 40 to adjust the direction. When the user drives the moving member 100 to slide on the main body 10 through the flexible traction member 70, the third detection device slides a certain distance along with the rotating moving member 100, and the third detection device detects the relative position distance between the third detection device and the third signal source, and outputs an electrical signal with a corresponding magnitude, so that the main control board 40 correspondingly controls the moving direction of the electric power assisting device.
In this embodiment, the rotary reset mechanism 90 is provided with a code wheel 120, and the main body 10 is correspondingly provided with a fourth detection device (not shown); the fourth detecting means is used for detecting the rotation amount of the rotary reset mechanism 90 by identifying the code wheel 120 and outputting an electric signal for speed regulation of the main control board 40. When the user pulls the rotary reset mechanism 90 to rotate through the flexible traction member 70, the code wheel 120 rotates along with the rotary reset mechanism 90, the fourth detection device identifies the rotation of the code wheel 120, and then outputs a corresponding electrical signal to the main control board 40, so that the main control board 40 can correspondingly adjust the moving speed of the electric power assisting device.
In this embodiment, the positions of the third signal source and the third detecting device may be interchanged, that is, the third detecting device is disposed on the main body 10 corresponding to the position of the moving part 100, and the third signal source is disposed on the moving part 100.
The position of the fourth detecting means may be interchanged with the position of the code wheel 120, that is, the fourth detecting means is provided on the rotary return mechanism 90 and the code wheel 120 is provided at a corresponding position on the main body 10.
In addition, it should be noted that, for the convenience of installation, the rotary reset mechanism 90 and the moving member 100 may be disposed on a fixed seat 110, and are connected and fixed with the main body 10 through the fixed seat 110.
Further, the sensing device 50 may be alternatively implemented by the following schemes, and may also be implemented in combination with the other embodiments of the sensing device 50, referring to fig. 10, the sensing device 50 includes a signal transmitter 130, the main body 10 is provided with three signal receivers 140 electrically connected to the main control board 40 and configured to receive the wireless signals transmitted by the signal transmitter 130, and the three signal receivers 140 are distributed in a triangular shape on the main body 10.
The signal transmitter 130 may be a radio frequency device, a wireless network device, a bluetooth device, an infrared device, an electromagnetic wave device, an ultrasonic device, an intelligent device, and the like, wherein the intelligent device may be a mobile phone, and the signal receiver 140 is a device that is in communication with the signal transmitter 130. After the signal transmitter 130 sends out a signal, the distance and the angle between the electric power assisting device and the signal transmitter 130 are calculated by calculating the time difference between the signals received by the three signal receivers 140, so as to determine whether steering or acceleration is required. It is easy to understand that corresponding speed gears can be set corresponding to different position distances between the electric power assisting device and the signal emitter 130, or as long as the relative position distance between the electric power assisting device and the signal emitter 130 is lower or higher than a preset distance value, the speed is correspondingly increased or reduced to realize the speed adjustment, so that the electric power assisting device and a user can always keep a moderate distance.
Further, the sensing device 50 may be implemented alternatively by the following scheme, and may also be implemented in combination with the other embodiments of the sensing device 50, where the sensing device 50 is a portable intelligent device, and the application software of the portable intelligent device controls and implements to output a corresponding speed-adjusting signal or direction-adjusting signal. The application software can simulate an operation interface similar to a steering wheel so as to realize the adjustment of the direction and the speed, such as long press acceleration and the like.
Further, the sensing device 50 may be alternatively implemented as follows, or may be implemented in combination with the other embodiments of the sensing device 50, referring to fig. 11, the relative position between the user and the electric power assisting device may be passively detected, so that the electric power assisting device automatically follows the movement of the user and implements speed control, specifically, the sensing device 50 includes a passive detection device 150 disposed on the main body 10, the passive detection device 150 is electrically connected to the main control board 40, and the passive detection device 150 is used for detecting the relative position between the user and the electric power assisting device. The relative position of a user and the electric power assisting device is detected to separate two control vectors of speed and direction, and then whether the electric power assisting device needs to accelerate or carry out direction control is controlled.
Preferably, the sensing device 50 includes an ultrasonic device, an image pickup device, a laser device, or the like electrically connected to the main control board 40.
In the embodiment of the push-pull rack 60, a receiving groove (not shown) for receiving the push-pull rack 60 is further formed on the main body 10. The push-pull frame 60 can be stored in the storage groove when the storage groove is idle, so that the protection is realized, the external volume is reduced, and the convenience is realized.
In a further embodiment, the main body 10 is a luggage case structure, and preferably, the main body 10 includes a case body (not shown) and a case cover (not shown), and the case cover and the case body enclose an openable storage chamber (not shown). Wherein, the storing cavity can be provided with an interlayer to form a plurality of storing rooms, and a zipper can be arranged between each storing room to control the opening and the closing.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.