CN214129099U

CN214129099U - Wheelchair with reminding function

Info

Publication number: CN214129099U
Application number: CN202022838050.0U
Authority: CN
Inventors: 钟文娥; 杨秀芳; 覃祖业
Original assignee: First People's Hospital Of Qinzhou
Current assignee: First People's Hospital Of Qinzhou
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-09-07
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses a wheelchair with function is reminded to intelligence, including the metal frame that constitutes the wheelchair frame, the shaft of two back wheels is connected to the back wheel, preceding wheel, cushion, install the footboard that extends to the inboard on the metal pole of the metal frame in two preceding wheel the place ahead respectively for promote the handle of wheelchair, wheelchair back and the handrail of setting in the wheelchair both sides still include the singlechip, first pressure sensor of singlechip circuit connection, second pressure sensor, speedtransmitter, electric control brake, pilot lamp, pronunciation reminding device and at least one brake switch. Through setting for pressure sensor at cushion and handle, set up speedtransmitter near the wheel to carry out data analysis through the singlechip, judge according to predetermineeing the threshold value, through sending the braking to diode, pronunciation reminding device and reminding, effectively reduced because of the potential safety hazard that careless braking leads to.

Description

Wheelchair with reminding function

Technical Field

The utility model relates to the technical field of wheelchairs, in particular to a wheelchair with a reminding function.

Background

The wheelchair is an important tool for the disabled, the sick and wounded or the old with inconvenient movement. A general wheelchair includes mechanical components such as a wheelchair frame, a seat, wheels, pedals, and a handle. When a user gets on or off the wheelchair, the wheelchair needs to be braked firstly to prevent the patient from falling down due to the sliding of wheels when the user gets on or off the wheelchair, but the person pushing the wheelchair or the wheelchair user often forgets to brake, so that potential safety hazards are brought. In the use process, sometimes the wheelchair needs to stay for a short time or a person pushing the wheelchair leaves for a short time, sometimes the wheelchair forgets to brake, and once the road surface is uneven, the wheelchair can automatically slide, so that great potential safety hazards are brought to a user.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the utility model provides a wheelchair with intelligent reminding function, which comprises a metal frame forming a wheelchair frame, a rear wheel, a wheel shaft connecting the two rear wheels, a front wheel, a cushion, pedals respectively arranged on the metal rod of the metal frame in front of the two front wheels and extending inwards, a handle for pushing the wheelchair, a wheelchair backrest, handrails arranged at the two sides of the wheelchair, and a singlechip, wherein the singlechip is connected with a first pressure sensor, a second pressure sensor, a speed sensor, an electric control brake, an indicator light, a voice reminding device and at least one brake switch,

the first pressure sensor is arranged on a cushion; the second pressure sensor is arranged on the handle; the speed sensor is arranged on one side of the cushion close to the rear wheel; the electric control brake is arranged on the wheel shaft; the indicator light comprises a red diode and a green diode; the indicator light and the voice reminding device are used for braking reminding; the brake switch is electrically connected with the electric control brake and is arranged on the metal rod of the metal frame close to the handle.

Furthermore, the wheelchair with the reminding function further comprises a timing device, and the timing device is connected with the single chip microcomputer circuit.

Furthermore, a blocking rod for supporting the wheelchair backrest is horizontally arranged behind the wheelchair backrest and is connected with two metal rods in the vertical direction at two sides behind the metal frame.

Further, the number of the brake switches is two, wherein the second one is arranged on the armrest.

Furthermore, the metal rod and the stop rod of the metal frame are both hollow structures.

Further, the single chip microcomputer is located in the metal frame or the gear lever.

Further, the indicator light and the voice broadcasting device are arranged behind the backrest of the wheelchair.

Further, the voice reminding device comprises a buzzer and a voice player.

Further, the rear wheel comprises a large wheel and a metal ring, and the large wheel is fixedly connected with the metal ring.

Further, the front wheels are universal wheels.

Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

1 through set for pressure sensor at cushion and handle, set up speedtransmitter near the wheel to carry out data analysis through the singlechip, judge according to predetermineeing the threshold value, through sending the braking to diode, pronunciation reminding device and reminding, effectively reduced because of the potential safety hazard that negligence braking leads to.

Compared with the electric wheelchair with high manufacturing cost, the device has simple structure, comprehensive reminding function and is more beneficial to practicality.

Drawings

Figure 1 is a schematic structural view of a wheelchair

Figure 2 is a schematic view of the back structure of the wheelchair

FIG. 3 is a schematic diagram of a brake reminding module

The device comprises a metal frame 1, a rear wheel 2, a bull wheel 20, a metal ring 21, a wheel shaft 3, a front wheel 4, a cushion 5, a pedal 6, a handle 7, a backrest 8, a gear lever 80, an armrest 9, a single chip microcomputer 10, a first pressure sensor 11, a second pressure sensor 12, a speed sensor 13, a timing device 14, an electronic brake 15, an indicator light 16, a red diode 160, a green diode 161, a voice reminding device 17 and a brake switch 18.

Detailed Description

The present invention will be described in further detail with reference to the following examples and accompanying drawings.

Example 1

As shown in fig. 1-3, a wheelchair with an intelligent reminding function comprises a metal frame 1 forming a wheelchair frame, rear wheels 2, wheel shafts 3, front wheels 4, a seat cushion 5, pedals 6, handles 7, a wheelchair backrest 8, handrails 9 arranged on two sides of the wheelchair, and a single chip microcomputer 10, wherein the single chip microcomputer 10 is electrically connected with a first pressure sensor 11, a second pressure sensor 12, a speed sensor 13, an electric control actuator 15, an indicator light 16, a voice reminding device 17 and at least one brake switch 18.

In this embodiment, a metal frame 1 constituting a wheelchair frame, a stopper rod 80 for supporting the wheelchair back is horizontally provided behind the wheelchair back 8, and the stopper rod 80 is connected to two metal rods in the vertical direction on both sides behind the metal frame 1. The metal rod and the stop rod 80 of the metal frame 1 are both hollow structures. The single chip microcomputer 10 is positioned in the metal frame 1 or the gear lever 80.

The front wheel 4 is a universal wheel, the pedal 6 is connected with a metal rod of the metal frame 1 in front of the front wheel 4 through an opening and closing device, the pedal 6 can be horizontally fixed, the pedal 6 can also be manually rotated to the vertical position to retract the pedal 6, and the pedal 6 is used for placing feet of a user.

The rear wheel 2 comprises a large wheel 20 and a metal ring 21 which are fixedly connected, and the rear wheel 2 is connected through a wheel shaft 3. The shaft is connected with an electric control brake, the electric controller is used for controlling the rotation of the shaft and achieves the braking effect by generating resistance to the rotation of the rotating shaft, and the electric controller is the prior art and is not described in detail at this time.

The cushion 5 is made of soft material, such as leather or other textile fabric coated with sponge. The first pressure sensor 11 is fitted on the seat cushion 5, and receives a weight signal of the user, and sets a weight threshold value of the user, and when the weight threshold value is exceeded, it is determined that the user is seated on the seat cushion 5, that is, the user is using the wheelchair, and the weight threshold value is set to 10 kg.

The handle 7 for pushing the wheelchair is made of soft antiskid material such as rubber, the handle 7 is provided with a second pressure sensor 12 for receiving a gripping force signal when the person pushing the wheelchair holds the handle, a gripping pressure threshold value is set, and when the pressure threshold value is exceeded, the person is judged to be pressed, namely, the person is pressed to grip the handle 7, and the pressure threshold value is set to 1N.

A brake switch 18 is arranged on the metal rod of the metal frame 1 close to the handle 7 and is electrically connected with the electric control brake 15 for controlling the start and stop of the electric control brake 15.

A speed sensor 13 is arranged on the side surface of the seat cushion 5 close to the rear wheel of the vehicle, and is used for receiving a speed signal of the wheelchair, setting a speed threshold value, judging that the wheelchair moves when the speed threshold value is exceeded, and setting the speed threshold value to be 0.1 m/s.

An indicator light 16 and a voice reminding device 17 are arranged behind the backrest and are used for braking reminding when the wheelchair needs to be braked but is not braked; the indicator light 16 includes a red diode 160 and a green diode 161; the voice reminding device 17 comprises a buzzer and a voice player and is used for braking reminding to different degrees.

The present embodiment includes the following modes:

a, the weight information received by the first pressure sensor 11 does not reach a weight threshold value, the pressure signal received by the second pressure sensor 12 does not reach a pressure threshold value, the speed information received by the speed sensor 13 does not reach a speed threshold value, the single chip microcomputer 10 analyzes the speed information and judges that no user sits on the wheelchair, no pushing personnel exists, and the wheelchair does not move, and then signals are transmitted to the red diode 160 and the voice reminding device 17 to remind that braking is needed. The situation is that the empty wheelchair is placed in the stage, braking is needed, on one hand, the wheelchair is prevented from sliding to collide, and more importantly, the user is prevented from falling down due to the fact that the wheelchair does not brake when the user goes to the wheelchair.

B, the weight information received by the first pressure sensor 11 does not reach a weight threshold value, the pressure signal received by the second pressure sensor 12 reaches a pressure threshold value, the speed information received by the speed sensor 13 does not reach a speed threshold value, the single chip microcomputer 10 analyzes the speed information and judges that no user sits on the wheelchair, a pushing person exists, the wheelchair does not move, a signal is transmitted to the green diode 161, the green indicating lamp is turned on, namely, the situation that the pushing person pushes the wheelchair to stay empty, and braking is not needed.

C, the weight information received by the first pressure sensor 11 does not reach a weight threshold value, the pressure signal received by the second pressure sensor 12 does not reach a pressure threshold value, the speed information received by the speed sensor 13 reaches a speed threshold value, the single chip microcomputer 10 analyzes the speed information and judges that no user sits on the wheelchair, no pushing personnel exists, the wheelchair moves, and then signals are transmitted to the red diode 160 and the voice reminding device 17 to remind that braking is needed. In this case, the movement of the empty wheelchair may cause collision of surrounding objects or persons, which may cause a safety hazard.

D, the weight information received by the first pressure sensor 11 reaches a weight threshold value, the pressure signal received by the second pressure sensor 12 does not reach the pressure threshold value, the speed information received by the speed sensor 13 does not reach the speed threshold value, the single chip microcomputer 10 analyzes the speed information and judges that a user sits on the wheelchair, no pushing personnel exists, and the wheelchair does not move, and then signals are transmitted to the red diode 160 and the voice reminding device 17 to remind the user of braking. Under this situation, often the person of carrying out briefly leaves, perhaps the user oneself briefly stops waiting, for guaranteeing safety, need open the braking when stopping, prevents that uncontrollable removal from causing the potential safety hazard.

E, the weight information received by the first pressure sensor 11 does not reach a weight threshold value, the pressure signal received by the second pressure sensor 12 reaches a pressure threshold value, the speed information received by the speed sensor 13 reaches a speed threshold value, the single chip microcomputer 10 analyzes the speed information and judges that no user sits on the wheelchair, a pushing person exists, the wheelchair moves, a signal is transmitted to the green diode 161, and the green indicator light is turned on, namely, the wheelchair belongs to the normal moving situation of an empty wheelchair and does not need braking.

F, the weight information received by the first pressure sensor 11 reaches a weight threshold, the pressure signal received by the second pressure sensor 12 does not reach the pressure threshold, the speed information received by the speed sensor 13 reaches a speed threshold, the single chip microcomputer 10 analyzes the speed information and judges that a user sits on the wheelchair, no pushing personnel exists, the wheelchair moves, and then signals are transmitted to the red diode 160 and the voice reminding device 17 to remind the user of braking. In this case, it may be that the person who performs the push forgets to brake and causes the wheelchair to move by oneself, and this kind of condition is very dangerous to the user, needs to send out the braking and reminds, in time stops dangerous emergence.

G the weight information received by the first pressure sensor 11 reaches a weight threshold value, the pressure signal received by the second pressure sensor 12 reaches a pressure threshold value, the speed information received by the speed sensor 13 does not reach the speed threshold value, the single chip microcomputer 10 analyzes the speed information and judges that a user sits on the wheelchair, a pushing person exists, the wheelchair does not move, a signal is transmitted to the green diode 161, the green indicating lamp is turned on, namely, the pushing person stays temporarily in the process of pushing the wheelchair, the normal stay situation is achieved, and braking is not needed.

H, the weight information received by the first pressure sensor 11 reaches a weight threshold value, the pressure signal received by the second pressure sensor 12 reaches a pressure threshold value, the speed information received by the speed sensor 13 does not reach a speed threshold value, the single chip microcomputer 10 analyzes the speed information and judges that a user sits on the wheelchair, a pushing person exists, the wheelchair moves, a signal is transmitted to the green diode 161, and the green indicator light is turned on, namely, the wheelchair belongs to the normal movement situation that the pushing person pushes the wheelchair, and braking is not needed.

Example 2 on the premise of example 1, in case F, the user may move the rim 21 of the rear wheel 2 of the vehicle, in this case, the user can control the movement of the wheelchair with both hands and keep the mind awake, which may cause trouble to the user if the brake reminding is performed all the time. Therefore, a reminding switch can be arranged on the armrest 9 of the wheelchair, namely when the situation D is the situation of the embodiment, voice reminding and indicator light reminding can be sent, but the user can close the reminding switch on the armrest, and the reminding switch is effective once. When the person taking the wheelchair changes or the wheelchair is pushed by a pushing person instead, that is, when the signal of the first pressure sensor 11 or the first pressure sensor 11 received by the single chip microcomputer 10 changes, that is, the weight information of the first sensor 11 changes from reaching the threshold to not reaching the threshold or the pressure information of the second pressure sensor 12 changes from not reaching the threshold to reaching the threshold, the reminding device continues to send the braking reminding according to the situation of the embodiment 1. Meanwhile, a second brake switch 18 is arranged on the handrail, and the brake switch 18 is connected with the brake switch 18 arranged on the metal frame 1 close to the handle 7 in parallel, namely, any one brake switch 18 is started, so that the wheelchair can be braked. Preventing the user from being able to brake himself when the pushing person is not present but braking needs to take place.

Example 3

In the pushing process, when a pushing person grips the handle 7, the situation that the pressure is instantaneously lower than the pressure threshold value occurs, but the pushing person does not actually separate from the armrest, which generally belongs to the situation that the pushing person can move controllably, and no braking is needed, so that in order to further reduce the false alarm rate, on the premise of the embodiment 1 and the embodiment 2, the wheelchair is provided with a timing device 14, and the timing device 14 is connected with the single chip microcomputer 10 through a circuit. The timing device is arranged at a position close to the side surface of the seat cushion and close to the speed sensor 13 or other suitable positions, and is used for timing the time which does not reach the pressure threshold value of the second pressure sensor 12, and setting the time threshold value, for example, 0.5S, and when the time which does not reach the pressure threshold value of the second pressure sensor 12 exceeds the time threshold value, the braking reminding is sent according to the condition of the embodiment 1.

The second pressure sensors 12 may be provided on the left and right handles, respectively, and connected in parallel, and it may be determined that there is a pushing person when at least one of the pressure sensors reaches a pressure threshold.

The utility model discloses a contain power supply unit in circuit element or device's the structure, if need additionally be equipped with power supply unit, can set up power supply element such as group battery at metal frame 1 or other suitable positions.

Having thus described the principles of operation and advantages of the present invention, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other forms without departing from the spirit or essential characteristics thereof. Accordingly, the present embodiments are to be considered as illustrative and not restrictive. The protection scope of the present invention is subject to the content of the claims. All according to the utility model provides a technical thought, any change of making on technical scheme basis all fall into the utility model discloses within the protection scope.

Claims

1. The utility model provides a wheelchair with remind function, is including metal frame (1) that constitutes the wheelchair frame, back wheel (2), wheel axle (3) of connecting two back wheels (2), preceding wheel (4), cushion (5), install footboard (6) of inboard extension on the metal pole of metal frame (1) in two preceding wheels (4) the place ahead respectively for promote handle (7) of wheelchair, wheelchair back (8) and handrail (9) of setting in the wheelchair both sides, its characterized in that: the brake reminding device further comprises a brake reminding module, the brake reminding module comprises a single chip microcomputer (10), the single chip microcomputer (10) is in circuit connection with a first pressure sensor (11), a second pressure sensor (12), a speed sensor (13), an electric control brake (15), an indicator light (16), a voice reminding device (17) and at least one brake switch (18),

the first pressure sensor (11) is arranged on the seat cushion (5); the second pressure sensor (12) is arranged on the handle (7); the speed sensor (13) is arranged on one side of the cushion (5) close to the rear wheel (2); the electric control brake (15) is arranged on the wheel shaft (3); the indicator light (16) comprises a red diode (160) and a green diode (161); the indicator light (16) and the voice reminding device (17) are used for braking reminding; the brake switch (18) is electrically connected with the electric control brake and is arranged on a metal rod of the metal frame (1) close to the handle (7).

2. The wheelchair with a reminder function of claim 1, wherein: the wheelchair with the reminding function further comprises a timing device (14), and the timing device (14) is in circuit connection with the single chip microcomputer (10).

3. The wheelchair with a reminder function of claim 2, wherein: a blocking rod (80) used for supporting the wheelchair backrest is horizontally arranged at the rear of the wheelchair backrest (8), and the blocking rod (80) is connected with two metal rods in the vertical direction at the two sides at the rear of the metal frame (1).

4. The wheelchair with a reminder function of claim 2, wherein: the number of the brake switches (18) is two, wherein the second one is arranged on the handrail (9).

5. The wheelchair with a reminder function of claim 3, wherein: the metal rod and the blocking rod (80) of the metal frame (1) are both hollow structures.

6. The wheelchair with a reminder function of claim 5, wherein: the single chip microcomputer (10) is located in the metal frame (1) or the gear lever (80).

7. The wheelchair with a reminder function of any one of claims 1 to 6, wherein: the indicator light (16) and the voice reminding device (17) are arranged behind the wheelchair backrest (8).

8. The wheelchair with a reminder function of any one of claims 1 to 6, wherein: the voice reminding device (17) comprises a buzzer and a voice player.

9. The wheelchair with a reminder function of claim 8, wherein: the rear wheel (2) comprises a large wheel (20) and a metal ring (21), and the large wheel (20) is fixedly connected with the metal ring (21).

10. The wheelchair with a reminder function of claim 9, wherein: the front wheels (4) are universal wheels.