CN201847847U - Electric wheel chair - Google Patents

Abstract

The utility model discloses an electric wheel chair comprising a seat, a pair of coaxial driving wheels, a controller, two synchronous motors and a storage battery. At least one universal wheel is arranged at the bottom of the seat, and the two synchronous motors independently drive the one pair of the coaxial driving wheels. In the electric wheel chair, the problems that the existing electric wheel chair can carry out steering by controlling a lower-end fixing movable wheel through a direction control bracket, the steering diameter is large when the electric wheel chair is in steering, and the steering needs a large space and can be realized in a narrow space by needing going forward and drawing back for multiple times so as to be inconvenient are solved.

Description

electric wheelchair

technical field

The utility model relates to a wheelchair, in particular to an electric wheelchair for disabled persons. the

Background technique

Electric wheelchairs on the existing market mostly include a seat, a continuously variable speed controller, a pair of coaxial drive wheels, a battery, a direction control bracket, one or more fixed movable wheels and a fixed bracket, and the seat is fixed on a pair of wheels through the fixed bracket. On the coaxial driving wheel, the front end of the seat is fixed with a direction control bracket, and the bottom of the direction control bracket is provided with one or more fixed movable wheels, which are mainly provided for the disabled and the elderly with inconvenient legs and feet. However, the existing electric wheelchairs use the direction control bracket to control the low-end fixed movable wheels to turn. When turning, the turning radius is large and the required space is large. If it is in a small space, it needs to move forward and backward many times before turning, which is very inconvenient. . the

Chinese patent announcement number CN2516139Y, announced on October 16, 2002, announced an electric wheelchair for the disabled, which includes a car body, a front guide wheel, and two rear power wheels, and the rear power wheels are linked with a motor. The body is provided with a storage battery and a storage battery key socket, and a continuously variable speed controller and an ammeter are provided on the handlebar of the front guide wheel. The utility model has the advantages of simple structure, labor saving, fast driving speed, and no environmental pollution such as noise and tail gas during use, and is suitable for wide popularization and use to replace existing traditional products. However, this electric wheelchair has a large body, and the electric wheelchair is turned by controlling the low-end fixed movable wheels through the direction control bracket. When turning, the turning radius is large and the required space is large. If it is in a narrow space, it needs to move forward and backward many times. It is very inconvenient to move before turning. the

Contents of the invention

The purpose of the utility model is to provide an electric wheelchair with convenient steering, which solves the problems of large turning radius and large space required when the existing electric wheelchair turns, which is very inconvenient. the

In order to solve the above technical problems, the utility model adopts the following technical solutions:

An electric wheelchair, comprising a seat, a pair of coaxial driving wheels, a controller, a motor and a battery, at least one universal wheel is provided at the bottom of the seat, and the motors are two synchronous motors, independently driving a pair of coaxial driving wheels . There is at least one universal wheel at the bottom of the seat. The motors are two synchronous motors, which independently drive a pair of coaxial drive wheels. Through the controller, the speed and steering of the two synchronous motors can be adjusted respectively. When the electric wheelchair is moving forward or backward normally, the two The speed of the synchronous motor is consistent to ensure that the electric wheelchair moves in a straight line. When turning left, the speed of the right motor is higher than that of the left motor, and the electric wheelchair turns left. When it is necessary to turn right, the speed of the left motor is higher than that of the right motor. Turn right, and when one motor rotates forward, and the other motor reverses at the same speed, the electric wheelchair rotates around the center of the two driving wheels, which achieves the purpose of turning in place. Through the controller, the speed of the two motors is properly adjusted. The speed difference of the independent motors can realize the steering of the electric wheelchair at any radius.

Preferably, the seat includes a foot support, a seat and a backrest, a cavity is arranged in the seat, and a storage battery is arranged in the cavity. The seat includes a foot support, a seat and a backrest, and a cavity is arranged in the seat, and a storage battery is arranged in the cavity, so that the space is rationally used, the storage battery is convenient to be placed, and the two synchronous motors are powered. the

Preferably, armrests are provided on the left and right sides of the backrest, a grip bar is provided on the armrests, and a speed adjustment rotary switch is provided at the top of the grip bar. There are armrests on the left and right sides of the backrest, which are convenient for users to grasp and stabilize the body shape. There is a grip bar on the armrest, and a speed adjustment rotary switch is installed on the top of the grip bar. The rotation speed adjustment rotary switch can adjust the two synchronous The speed of the motor. the

Preferably, a direction control rotary switch is provided on the cylindrical surface of the handle. There is a direction control rotary switch on the cylindrical surface of the grip rod. The direction control rotary switch adjusts the original speed of the two synchronous motors when driving in a straight line through the controller to change the steering. The direction control rotary switch on the left grip cylindrical surface rotates forward, and the right motor If the rotation speed is higher than the rotation speed of the left motor, the electric wheelchair will turn left; similarly, if the direction control rotary switch on the cylindrical surface of the right handle is rotated forward, the rotation speed of the left motor will be higher than the rotation speed of the right motor, and the electric wheelchair will turn to the right; , and at the same time forwardly rotate the direction control rotary switch on the left grip cylinder surface and reversely rotate the direction control rotary switch on the right grip cylinder surface, the electric wheelchair turns to the left in situ, and at the same time positively rotate the direction control rotation on the right grip cylinder surface The switch and reverse rotation control the direction of the rotary switch on the cylindrical surface of the left grip bar, and the electric wheelchair turns to the right in situ. the

Preferably, the bottom of the seat is provided with two universal wheels one in front and one in the back. There are two universal wheels at the bottom of the seat, which are convenient for the electric wheelchair to turn in situ and stabilize the center of gravity when turning. the

The beneficial effects of the utility model are: (1), the motors are two synchronous motors, which independently drive a pair of coaxial drive wheels, and through the controller to properly adjust the speed and steering of the two motors, the electric wheelchair can turn in situ and turn at any radius; (2) The direction control rotary switch is used to control the steering, which is easy to operate, and the body is small in size and occupies a small area. the

Description of drawings

Fig. 1 is a kind of structural representation of the utility model;

Fig. 2 is a kind of sectional view of the utility model;

In the figure: 1. drive wheel, 2. foot support, 3. universal wheel, 4. seat, 5. backrest, 6. direction control rotary switch, 7. axle, 8. controller, 9. storage battery, 10. Motor, 11, speed adjustment rotary switch.

Detailed ways

Below by specific embodiment, in conjunction with accompanying drawing, the technical scheme of the utility model is described in further detail:

An electric wheelchair (see accompanying drawings 1 and 2), including a seat, a pair of driving wheels 1 and a universal wheel 3, a pair of driving wheels 1 are located on both sides of the bottom of the seat, and a universal wheel 3 is located on a After the driving wheel 1, the seat includes a foot support 2, a seat seat 4 and a backrest 5, and a pair of driving wheels 1 at the bottom of the seat is respectively connected with a motor 10, and the two motors 10 are synchronous motors, independently driving a pair of driving wheels 1, The bottom of the seat is provided with a wheel shaft 7, two motors 10 are fixed on the wheel shaft 7, a controller 8 is fixed on the wheel shaft 7, a cavity is provided in the seat cushion 4, a battery 9 is arranged in the cavity, and the left and right sides of the backrest 5 Each is provided with a handrail, and the handrail is provided with a grip bar. The cylindrical surface of the grip bar is provided with a direction control rotary switch 6, and the top of the grip bar is provided with a speed adjustment rotary switch 11.

The bottom of the seat can also be set as two universal wheels 3 one in front and one in the back, which is convenient for the electric wheelchair to turn in situ and stabilize the center of gravity when turning. the

A pair of driving wheels 1 is connected with an independently driven synchronous motor 10, through the controller 8, the rotational speed and steering direction of the two synchronous motors 10 can be adjusted respectively. The electric wheelchair moves along a straight line. When a left turn is required, the speed of the right motor 10 is higher than the speed of the left motor 10, and the electric wheelchair turns left. Turning, and when the speed of one motor 10 rotates forward, the other motor 10 reverses at the same speed, the electric wheelchair rotates around the center of the two driving wheels, that is, the purpose of turning in place is achieved, and the speed of the two motors 10 is properly adjusted. The rotation speed difference can realize the electric wheelchair turning at any radius. The cylindrical surface of the grip bar is provided with a direction control rotary switch 6, and the direction control rotary switch 6 adjusts the speed of the two synchronous motors 10 through the controller 8 to change the steering. the

When the electric wheelchair is in use, rotate the speed adjustment rotary switch 11 at the top of the grip bar, and the speed of the two synchronous motors can be adjusted by the controller when the electric wheelchair is running straight; rotate the direction control rotary switch 6 on the cylindrical surface of the left grip bar, and the right motor 10 The rotation speed is higher than the left motor 10 rotation speed, and the electric wheelchair turns left; in the same way, the direction control rotary switch 6 on the cylindrical surface of the right grip rod is rotated forward, the left motor rotation speed is higher than the right motor rotation speed 10 rotation speed, and the electric wheelchair turns right; When the ground is still, rotate the direction control rotary switch 11 on the cylindrical surface of the left grip rod forward and reversely rotate the direction control rotary switch 11 on the cylindrical surface of the right grip rod at the same time, the electric wheelchair will turn left in situ, and rotate the right grip rod in a forward direction at the same time The direction control rotary switch 11 on the cylindrical surface and the direction control rotary switch 11 on the cylindrical surface of the left grip bar are reversely rotated, and the electric wheelchair turns to the right in situ. the

The above-described embodiment is only a preferred solution of the utility model, and does not limit the utility model in any form. There are other variations and improvements without exceeding the technical solution described in the claims. type. the

Claims (5)

1. An electric wheelchair, comprising a seat, a pair of coaxial drive wheels, a controller, a motor and a storage battery, characterized in that the bottom of the seat is provided with at least one universal wheel, and the motors are two synchronous motors, independently driven A pair of coaxial drive wheels. 2 . An electric wheelchair according to claim 1 , wherein the seat includes a foot support, a seat and a backrest, a cavity is provided in the seat, and a battery is arranged in the cavity. 3. The electric wheelchair according to claim 2, wherein the left and right sides of the backrest are provided with armrests, the armrests are provided with a grip bar, and the top of the grip bar is provided with a speed adjustment rotary switch. 4. The electric wheelchair according to claim 3, wherein a direction control rotary switch is provided on the cylindrical surface of the handle bar. 5. An electric wheelchair according to claim 4, characterized in that, the bottom of the seat is provided with two universal wheels, one front and one rear.

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