CN111361431A

CN111361431A - Walking stick capable of assisting walking

Info

Publication number: CN111361431A
Application number: CN202010166261.6A
Authority: CN
Inventors: 张璟; 胡昕晔; 余文涯; 孙慧霖; 张超然
Original assignee: Hefei University of Technology
Current assignee: Hefei University of Technology
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-07-03

Abstract

The invention provides a walking aid crutch, which comprises a base, a connecting rod and an acceleration sensor, wherein the connecting rod is arranged on the base, a roller is arranged at the bottom of the base, and an air bag is arranged in the base. According to the walking-aid crutch, when the acceleration sensor detects that the inclination angle of the walking-aid crutch exceeds the preset angle, the air bag is inflated by the gas generating device and then pops out of the cavity, a ring-shaped buffer layer is formed around the base, and a user cannot be violently impacted after falling down.

Description

Walking stick capable of assisting walking

Technical Field

The invention belongs to the technical field of walking sticks and relates to a walking-aid walking stick.

Background

In the world, the aging problem is more and more serious, the number of the old people is rapidly increased, and under the background, the old crutch has a wide application prospect. In addition, the health of the old people is also more and more concerned by people, so that the intelligent anti-falling crutch is popular with people. Its various powerful functions also can bring about a longer health for the old, and save a worry about children.

And many crutches on the market are not anti-skid, so the old can fall down easily and be injured easily on uneven roads. Ordinary walking stick head is mostly concentric circles and glues the head, can produce uncontrolled gliding under the exhaust effect, and when the user walked, the walking stick had angle slope more and the rotation trend and to the effort of one side, and the head of turning is behind the wearing and tearing of rough surface, and anti-skidding function is impaired. When the crutch is inclined, the contact area and the friction force are reduced, and particularly, the crutch slips on a smooth and watery surface and has the serious consequence of causing injury to a user. The crutch can be wrapped by waste tires, soles or even cloth by many friends, and the problem can not be solved.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a walking aid crutch, which is used to solve the problem that the crutch in the prior art is not anti-skid and the user is easy to fall down.

To achieve the above and other related objects, the present invention provides a walking stick, comprising:

a base which is in a ring belt shape, a hollow area is arranged in the middle,

the base comprises a base seat, a base seat and a base,

a cover plate is arranged on the upper surface of the shell,

a bottom plate, which forms a cavity with the cover plate for placing the uninflated air bag,

the air bag is connected with a gas generating device controlled by the single-chip machine through an air guide pipe, and the air bag can be ejected out of the cavity after being inflated by the gas generating device and forms an annular buffer layer around the base;

the connecting rod is arranged on the base;

the acceleration sensor is electrically connected with the single chip microcomputer, is arranged on the connecting rod or the base and is used for detecting the inclination angle of the walking aid crutch;

and the roller is arranged below the bottom plate.

In an embodiment of the present invention, the airbag has a plurality of inflation ports at regular intervals, and the inflation ports are connected to the gas generating device.

In an embodiment of the present invention, a partition is used to divide the cavity into a first chamber for placing the airbag and a second chamber disposed below the first chamber, and the gas generating device is disposed in the second chamber.

In an embodiment of the invention, the partition plate is provided with a through hole for the air duct to pass through.

In an embodiment of the invention, the acceleration sensor is a three-axis acceleration sensor.

In an embodiment of the present invention, the walking stick further includes a control device for controlling the movement of the roller.

In an embodiment of the present invention, the operating device includes an operating component, a motor speed control module, a motor driver and a motor, which are electrically connected in sequence;

the operating assembly is arranged at the top of the connecting rod, and the motor is meshed with the roller through a gear;

the motor rotating speed control module, the motor driving control assembly and the motor are arranged on the base or the connecting rod.

In an embodiment of the invention, the operating lever assembly is an operating lever, and a fixing seat fixedly connected with the connecting rod is disposed at the bottom of the operating lever.

In an embodiment of the invention, the operating lever is connected to the fixed base through a rotating shaft.

In an embodiment of the invention, the connecting rod includes a first rod and a second rod, a hole for inserting the first rod is axially formed at the top of the second rod, a plurality of through holes are axially formed on the side wall of the hole, and a fastening member is used to pass through the through holes to fix the position of the first rod.

As mentioned above, when the walking aid crutch topples, the three-axis acceleration sensor generates toppling signals to the single chip microcomputer, the single chip microcomputer controls the gas generating device to start after receiving the toppling signals, the air bag is popped up after being inflated and is blocked by the second side plate, the air bag is popped up and is in a swimming ring shape, a user can be supported by the air bag when falling down at any angle, and the anti-collision buffer layer formed by the air bag ensures that the user cannot be violently bumped after falling down.

The walking-aid crutch has simple structure and low manufacturing cost.

The walking aid crutch can control the movement of the roller of the walking aid crutch by using the control device, and a speed peak value can be set in the motor rotating speed control module of the control device to control the highest moving speed of the walking aid crutch so as to facilitate the movement of the walking aid crutch by a user

The invention can install a inching switch on the handle, the inching switch is directly connected in series between the motor rotating speed control module and the operating component, a user can control the on-off of the control circuit of the whole operating device through the inching switch so as to control the start and stop of the motor, wherein, the inching switch is required to be pressed down by the user to start and conduct the whole control circuit, so that the inching switch forms the false touch prevention braking mechanism.

Drawings

FIG. 1 is a perspective view of a walking stick of the present invention in one embodiment.

FIG. 2 is a cross-sectional view of the connecting rod of the walking aid crutch of the present invention.

Fig. 3 is an enlarged view of a portion of the joystick of fig. 1.

Fig. 4 is an enlarged view of a portion of the roller of fig. 1.

FIG. 5 is a perspective view of a base of a walking stick of the present invention.

Fig. 6 shows an exploded view of the base of fig. 5.

Fig. 7 is a schematic structural diagram of the cover plate of the present invention.

Fig. 8 shows a schematic view of the deployment of the cover plate upon ejection of the air bag of fig. 7.

Figure 9 shows a schematic perspective view of the air bag of figure 1 when ejected.

Fig. 10 is a block diagram showing the construction of the manipulating device of the present invention.

Fig. 11 shows a schematic circuit diagram of the inventive operating device.

Fig. 12 is a schematic circuit diagram of the connection between the single chip microcomputer and the three-axis acceleration sensor.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Referring to fig. 1 and 2, the present invention provides a walking aid crutch, which comprises a base 2, a connecting rod 1 disposed above the base 2, and a plurality of rollers 3 (as shown in fig. 4) disposed below the base 2, wherein the rollers 3 support the base 2 on the ground, the base 2 is in a ring shape, a hollow area is disposed in the middle, a user can stand in the hollow area to push the base 2 by using the connecting rod 1, and the rollers 3 below the base 2 roll with the user. The walking-aid crutch has simple structure and low manufacturing cost.

In the present embodiment, referring to fig. 5 and 6, the base 2 includes a cover plate 21, a bottom plate 25 and an air bag 22, the cover plate 21 and the bottom plate 25 form a cavity for placing the air bag 22, when the air bag 22 is not inflated, the air bag 22 is completely retracted in the cavity, and the rollers 3 are disposed below the bottom plate 25. The air bag 22 is provided with a plurality of inflation ports, and the inflation ports are communicated with a gas generating device 23 arranged at the bottom of the air bag 22 by using air ducts. To ensure uniform inflation throughout the bladder 22, a plurality of inflation ports are evenly spaced around the bladder 22. When the air bag 22 is inflated by the gas generator 23, it will pop out of the cavity to form an annular cushion around the base 2.

In addition, each inflation port of the airbag 22 can be connected to the same gas generating device 23 by using a gas tube, and the gas generating device 23 can supply gas to each inflation port simultaneously, of course, a corresponding gas generating device 23 can be configured for each inflation port, in this embodiment, the airbag 22 with 4 inflation ports and the gas generating device 23 configured with each inflation port are given as an example, as shown in fig. 6.

Further, the gas generator 23 can be directly placed in the cavity, the bottom of the gas generator 23 can be directly fixed on the bottom plate 25 by using fasteners such as bolts and screws, in order to prevent the edges of the gas generator 23 from scratching the air bag 22, a housing can be covered outside the gas generator 23, the housing adopts a smooth curved surface, and a through hole for the air duct between the gas generator 23 and the air bag 22 to pass through is formed in the housing.

Alternatively, as shown in fig. 5 and 6, the cavity may be divided by a partition 24 into a first chamber for housing the airbag 22 and a second chamber disposed below the first chamber for housing the gas generating device 23. The partition plate 24 is provided with a through hole for the air duct to pass through, correspondingly, the inflation port of the air bag 22 can be arranged at the bottom of the air bag 22, one end of the air duct is connected with the air outlet end of the gas generating device 23, and the other end of the air duct passes through the through hole to be connected with the inflation port at the bottom of the air bag 22, so that the air bag 22 is not obstructed by the gas generating device 23 in the ejection process when being inflated.

In the present invention, as shown in fig. 7 and 8, the cover plate 21 includes a top plate 212, and a first side plate 213 and a second side plate 211 disposed at two sides of the bottom of the top plate 212, the second side plate 211 is disposed near the hollow area, the first side plate 213 is disposed far away from the hollow area, the bottom of the second side plate 211 is fixedly connected to the bottom plate 25, the first side plate 213 is divided into an upper plate and a lower plate by a partition plate 24, wherein the upper plate is respectively connected to the top plate 212 and the partition plate 24 by a hinge, and the top plate 212 can be fastened to the top end of the second side plate 211 by a magnetic. When the gas generating device 23 supplies gas to the airbag 22, when the airbag 22 starts to pop up, the airbag 22 overcomes the magnetic attraction force between the top plate 212 and the second side plate 211 to push the top plate 212 open, and when the airbag 22 continues to expand, the top plate 212 and the upper plate are gradually turned outwards according to the hinge between the top plate 212 and the upper plate and the hinge between the partition plate 24 and the upper plate until the top plate 212, the upper plate and the partition plate 24 are in the same plane. Due to the blockage of the second side panel 211, the bladder 22 does not intrude into the hollow region, forming a donut-like shape after the bladder 22 is fully ejected (as shown in fig. 9).

In the invention, the walking aid crutch further comprises a single chip microcomputer for controlling the gas generating device 23 to start and stop and an acceleration sensor arranged on the connecting rod 1, wherein the acceleration sensor is a three-axis acceleration sensor 7, the single chip microcomputer (such as STC89C51 single chip microcomputer) can be arranged in a second chamber (shown in figure 12), the three-axis acceleration sensor 7 (such as an MPU6050 gyroscope) can be arranged in the connecting rod 1 (shown in figures 2 and 12), the three-axis acceleration sensor 7 is connected with the single chip microcomputer by a lead wire, the lead wire can be laid along the connecting rod 1 and connected with the single chip microcomputer arranged in the second chamber, and the three-axis acceleration sensor 7 can also be arranged in the base 2 (such as the second chamber. The embodiment also shows the specific circuit connection among the MPU6050 gyroscope module, the single chip microcomputer and the gas generating device 23, as shown in FIG. 12. Triaxial acceleration sensor 7 is used for detecting connecting rod 1 or the inclination of base 2 for ground, can set up in triaxial acceleration sensor 7 and predetermine the angle, the angle that surveys when triaxial acceleration sensor 7 surpasss and predetermines the angle, then can think to help the walking stick to take place to empty, triaxial acceleration sensor 7 generates to the singlechip and emptys the signal this moment, the singlechip controls gaseous generating device 23 and starts after the received signal of empting, pop out after gasbag 22 aerifys, it is the swimming life-buoy form because of second curb plate 211 blocks that gasbag 22 pops out the back, consequently, the user falls down towards any angle and all can be born by gasbag 22, the anticollision buffer layer that gasbag 22 formed guarantees that the user can not receive violent striking after falling down.

In the present invention, in order to facilitate the user to move the walking stick, a manipulating device for controlling the operation of the roller 3 may be installed on the top of the connecting rod 1, as shown in fig. 10 and 11, the manipulating device 6 includes a manipulating assembly 61, a motor 64, a power source 65 (e.g., 24V lithium battery), a motor driver 63 (e.g., HBS57 driver), and a motor speed control module 62. The power supply 65 is used for providing the power supply 65 for the operating device 6 and the single chip microcomputer, the operating component 61, the motor rotating speed control module 62, the motor driver 63 and the motor 64 are electrically connected in sequence, the operating device can generate corresponding control signals according to manual operation actions of a user and transmit the control signals to the motor driver 63 through the motor rotating speed control module 62, and the motor driver 63 controls working parameters of the motor 64 according to electric signals, such as starting, stopping, forward rotation, reverse rotation and rotating speed. Wherein the motor 64 and the roller 3 can be meshed with two cylindrical gears, and the motor 64 controls the rotation of the roller 3.

The operating component 61 can be an operating lever 611, the operating lever 611 can be mounted on the top of the connecting rod 1 by a fixing base 612, the operating lever 611 and the fixing base 612 are connected by a rotating shaft, the operating lever 611 can be controlled by the user manually to swing, as shown in fig. 3, the operating lever 611 can swing left and right on the fixing base 612. The joystick 611 generates a corresponding electrical signal according to the self-swinging position and sends the signal to the motor speed control module 62, so as to finally control the working parameters of the motor 64.

The control assembly 61 may also be a control panel or a touch screen, and corresponding buttons or knobs may be disposed on the control panel for controlling the start, stop, forward rotation, reverse rotation, and rotation speed of the motor 64.

In this embodiment, the motor speed control module 62 may be directly mounted to the connecting rod 1, for example, may be built into the connecting rod 1. An indicator light can be correspondingly arranged on the side wall of the connecting rod 1 according to the type of the electric signal generated by the operating device 6, light sources with different colors can be adopted among the indicator lights, and the control signal sent by the current operating component 61 can be visually checked through the light sources with different colors. It should be noted that a speed peak value can be set in the motor speed control module 62 to control the maximum traveling speed of the walking aid crutch, and the speed peak value set in this embodiment is 0.6 m/s.

In this embodiment, the roller 3 installed at the bottom of the connecting rod 1 is driven by the motor 64 to serve as a driving wheel of the base 2, and the base 2 may be further provided with a plurality of auxiliary rollers 5 for reducing the pressure applied to the driving wheel.

Further, in order to facilitate the user to grasp the connecting rod 1, a handle 4 (as shown in fig. 1) may be disposed at the top of the connecting rod 1, and the handle 4 may be configured as a cylinder, wherein the outer wall of the cylinder may be configured as a handle conforming to the grasping radian of the fingers of the human body. For the convenience of the user, a manipulating assembly 61 may be provided at the top of the grip 4. In this embodiment, a jog switch (not shown) may be further installed on the handle 4, the jog switch is directly connected in series between the motor speed control module 62 and the operation component 61, and a user can control the on/off of the control circuit of the entire operation device 6 through the jog switch, so as to control the start/stop of the motor 64, wherein the user needs to press the jog switch to start and conduct the entire control circuit, so that the jog switch constitutes an anti-false-touch braking mechanism.

It should be noted that, its motor driver 63 still can carry out electric connection with the singlechip, and when the singlechip received the signal of empting that triaxial acceleration sensor 7 produced, the singlechip can generate a motor 64 and close the signal transmission and give motor driver 63, and motor driver 63 stops motor 64 operation when receiving motor 64 and close the signal, prevents that the user from controlling operation subassembly 61 or electric switch by mistake when helping the capable walking stick to empty, avoids taking place the condition that base 2 removed in the process of empting.

For the convenience of the users with different heights to grasp the connecting rod 1, in this embodiment, as shown in fig. 2, the connecting rod 1 adopts an adjustable structure, the connecting rod 1 includes a first rod 11 and a second rod 12, wherein a hole for inserting the first rod 11 is axially formed in the top of the second rod 12, and the first rod 11 can move up and down in the hole. A plurality of through holes are axially formed in the side wall of the hole, the through holes can be threaded holes, and fasteners such as bolts and screws can penetrate through the threaded holes to be fixedly arranged at the position of the first rod piece 11 in the hole. The user can adjust the height of the position of the first rod piece 11 under the condition of loosening the fastening piece in the threaded hole, and after the first rod piece 11 is adjusted to the preset height, the fastening piece in the threaded hole, which is sheltered by the first rod piece 11, is screwed to fix the first rod piece 11.

In this embodiment, as shown in fig. 2, the connecting rod 1 can directly penetrate through the base 2, and the roller 3 is installed at the bottom of the connecting rod 1. It should be noted that the portion of the connecting rod 1 passing through the base 2 is disposed closer to the first side plate 213 than the airbag 22, so that the connecting rod 1 does not hinder the ejection of the airbag 22 during inflation. For example, a through channel for the connection rod 1 to pass through may be formed on the base 2, for example, the through channel is formed on the second side plate 211, and accordingly, a flange may be further sleeved on the connection rod 1, and the connection rod 1 is fixedly connected to the base 2 by the flange. Of course, the connecting rod 1 can also be directly inserted into the hollow area, and the outer wall of the connecting rod 1 is fixedly connected with the second side plate 211, for example, a fixing lug protruding to the hollow area is arranged on the second side plate 211, the connecting rod 1 directly penetrates through the fixing lug, and the connecting rod 1 is fixedly connected with the fixing lug by a flange. Wherein, connecting rod 1 can make axial rotation, and the user can change easily and turn through direct rotatory connecting rod 1.

It should be noted that, the setting of the connecting rod 1 needs to avoid the magnetic attraction position between the top plate 212 and the second side plate 211, so as to avoid interfering the magnetic attraction between the top rod and the second side plate 211.

The following is a description of the working principle of the walking aid crutch.

The user stands in the hollow area of the base 2, holds the handle 4 with both hands, and controls the motor 64 to rotate forward and backward and rotate at a speed through manually operating the operating device 6, so as to control the moving speed of the roller 3 driving the base 2.

When the needs turn, the user directly rotates connecting rod 1 to drive connecting rod 1 bottom gyro wheel 3 to rotate certain angle, manually control controlling means 6 once more, drive base 2 and remove.

In case, the user takes place to fall down, the user drives and holds connecting rod 1 in hand, make connecting rod 1, base 2 take place the slope together, the angle that triaxial acceleration sensor 7 in the connecting rod 1 detected surpasss preset angle, then can think to help the walking stick to take place to empty, even the user is about to take place to fall down, at this moment, triaxial acceleration sensor 7 sends to the singlechip and emptys the signal, singlechip control gas generating device 23 starts, aerify to gasbag 22, gasbag 22 pops out immediately and forms the swimming circle form, the striking dynamics with ground when alleviateing the user greatly.

In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A walking aid crutch, comprising:

a base which is in a ring belt shape, a hollow area is arranged in the middle,

the base comprises a base seat, a base seat and a base,

a cover plate is arranged on the upper surface of the shell,

the connecting rod is arranged on the base;

and the roller is arranged below the bottom plate.

2. The walking aid crutch of claim 1, wherein: the air bags are respectively provided with a plurality of inflation ports at uniform intervals, and the inflation ports are connected with the gas generating device.

3. The walking aid crutch of claim 1, wherein: the cavity is divided into a first cavity for placing an air bag and a second cavity arranged below the first cavity by a partition plate, and the gas generating device is arranged in the second cavity.

4. The walking aid crutch of claim 3, wherein: the baffle plate is provided with a through hole for the air duct to pass through.

5. The walking aid crutch of claim 1, wherein: and the acceleration sensor is a three-axis acceleration sensor.

6. The walking aid crutch of claim 1, wherein: the walking aid crutch also comprises a control device used for controlling the movement of the roller.

7. The walking aid crutch of claim 6, wherein: the control device comprises a control assembly, a motor rotating speed control module, a motor driver and a motor which are electrically connected in sequence;

8. The walking aid crutch of claim 7, wherein: the operating rod component is an operating rod, and the bottom of the operating rod is provided with a fixed seat fixedly connected with the connecting rod.

9. The walking aid crutch of claim 8, wherein: the operating rod is connected with the fixed seat rotating shaft.

10. The walking aid crutch of claim 1, wherein: the connecting rod comprises a first rod piece and a second rod piece, a hole for the first rod piece to insert is axially formed in the top of the second rod piece, a plurality of through holes are axially formed in the side wall of the hole, and a fastener penetrates through the through holes to fix the position of the first rod piece.