CN204971941U - Wheelchair with electronic helping hand function - Google Patents

Abstract

The utility model discloses a wheelchair with electric power boosting function, which comprises a vehicle frame provided with walking wheels and two electric power boosting devices respectively arranged on both sides of the vehicle frame. The battery is swingably arranged on the swing plate outside the vehicle frame. At the bottom of the swing plate, there is a friction wheel that can be in frictional contact with the walking wheel and is connected to the running motor. On the top of the swing plate A swing arm is provided, and a locking mechanism is provided between the swing arm and the vehicle frame. Usually, the user manually drives the wheelchair through the walking wheel, which can exercise the user's arm. When electric power is needed, the swing plate makes the friction wheel contact with the walking wheel and locks it in this state with the locking mechanism, so that the walking motor can pass through the friction. The wheel drives the traveling wheel for electric power-assisted drive.

Description

Wheelchairs with electric assist

technical field

The utility model relates to the technical field of medical care equipment, in particular to a wheelchair with electric power assist function.

Background technique

The wheelchairs currently on the market for the elderly, the weak, the disabled or inpatients are generally made of a frame and a seat fixed on the frame. The front part of the bottom of the frame is provided with small rollers. Large wheels are arranged on the inside, and the small rollers are generally universal wheels, which are driven by manpower or electricity.

Existing wheelchairs are divided into two types: manual wheelchairs and electric wheelchairs. Manual wheelchairs require the user to drive manually. When driving for a long distance or going uphill, the user’s physical energy consumption will be increased. Electric wheelchairs are easy to use and are conducive to outdoor movement. But overall weight is big, and cost is high.

Utility model content

The purpose of the utility model is to provide a wheelchair with electric power assist function aiming at the technical defects existing in the prior art.

The technical scheme adopted for realizing the purpose of this utility model is:

A wheelchair with an electric power assist function, comprising a vehicle frame provided with walking wheels and two electric power assist devices respectively arranged on both sides of the vehicle frame, the electric power assist device includes a battery fixed on the vehicle frame, and can swing The pendulum plate arranged on the outside of the vehicle frame is arranged on the lower part of the pendulum plate, and the friction wheel which can be in frictional contact with the traveling wheel and is connected with the traveling motor is arranged on the lower part of the pendulum plate, and a swing arm is arranged on the upper part of the pendulum plate, A locking mechanism is arranged between the swing arm and the vehicle frame.

The locking mechanism includes a tension spring arranged between the swing arm and the frame, a telescopic pin arranged on the frame, and a pin hole matchedly arranged on the swing arm, when the pin When inserted into the pin hole, the friction wheel can be kept in frictional contact with the running wheel and the state can be locked.

The adjacent surface of the pin rod and the swing arm is an inclined plane so as to force the pin rod to retreat and be inserted into the pin hole.

The vehicle frame includes two rear vertical rods, a bottom vertical rod fixedly connected with the two rear vertical rods and an upper vertical rod for supporting and positioning the seat plate, and a front end connecting the bottom vertical rod and the upper vertical rod The connecting rod, the battery is fixedly arranged on the front connecting rod, the electric power booster is fixed on the outer side of the upper vertical rod, and the handles that can control the electric power booster are arranged at the front ends of the armrests on both sides of the seat plate.

The electric power booster also includes an inner plate fixedly connected with the upper longitudinal rod, an outer plate fixedly connected with the inner plate and kept spaced apart, a rotating shaft arranged between the inner plate and the outer plate, the The swing arm is rotatably arranged on the rotating shaft, and the traveling motor is fixedly arranged below the rotating shaft.

The traveling motor is connected to the friction wheel through a toothed belt transmission.

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

Usually, the user manually drives the wheelchair through the walking wheel, which can exercise the user's arm. When electric power is needed, the swing plate will make the friction wheel contact with the walking wheel and lock it in this state with the locking mechanism, so that the walking motor can pass through the friction. The wheel drives the traveling wheel for electric power-assisted drive. Moreover, the battery is fixedly arranged on the outside of the wheelchair frame, which is easy to disassemble. At the same time, it adopts an external structure, which has low manufacturing cost and simple operation. The switching state must be manually switched, and the use safety is high. At the same time, it provides electric power for manual wheelchairs. Improve its use experience.

Description of drawings

Shown in Fig. 1 is the structural representation of the wheelchair of the present utility model;

Figure 2 is a schematic diagram of the structure of the electric power assist device.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figures 1 and 2, the wheelchair with electric power boosting function of the present utility model includes a vehicle frame 1 provided with walking wheels 12 and two electric power boosting devices 2 respectively arranged on both sides of the vehicle frame. It includes a lithium-ion battery 21 fixedly arranged on the vehicle frame, a wobble plate 22 swayably arranged on the outside of the vehicle frame, and a friction wheel 23 that can be in frictional contact with the walking wheel is arranged at the lower part of the wobble plate, The friction wheel is connected to the traveling motor through a transmission belt, preferably a toothed belt, wherein the traveling motor is fixedly arranged on the swing plate 22, and a swing arm 29 is arranged on the top of the swing plate 22. A handle is provided on the top of the swing arm, and a locking mechanism is provided between the swing arm and the vehicle frame. The walking wheels are similar to commercially available wheelchairs, including a large wheel in contact with the ground and a hand wheel set on one side for manual driving forward. When the swing arm swings down, the friction wheel is in friction contact with the large wheel .

Wherein, the vehicle frame includes two rear uprights 11, two traveling wheels 12 respectively arranged on the rear uprights, bottom longitudinal rods 13 fixedly connected with the two rear uprights respectively and used to support the positioning seat plate The upper longitudinal rod 14, the front connecting rod 15 connecting the bottom longitudinal rod and the upper longitudinal rod, and the diagonal rod 16 interlacedly connecting the bottom longitudinal rod and the upper longitudinal rod, the electric power assist device is fixed on the outer side of the upper longitudinal rod , wherein, the battery is fixedly arranged on the front connecting rod 15, and the handle 28 that can control the electric power booster is arranged on the front ends of the armrests on both sides of the seat plate of the wheelchair frame for manual control. Wherein, the electric power assist device further includes an inner plate 31 fixedly connected with the upper longitudinal rod, an outer plate 32 fixedly connected with the inner plate and kept spaced apart, and a rotating shaft arranged between the inner plate and the outer plate. 33. The swing arm is rotatably arranged on the rotating shaft, and the traveling motor is fixedly arranged below the rotating shaft. The rotating shaft design of the swing arm can effectively avoid the internal and external swing and ensure the stability of the frictional contact. At the same time, the traveling motor is arranged between the inner and outer plates under the rotating shaft, which also plays a certain role in protecting the traveling motor.

When electric assist is needed, swing the pendulum plate to make the friction wheel contact with the road wheel and lock it in this state by the locking mechanism, so that the travel motor can drive the road wheel through the friction wheel to perform electric power assist driving. Preferably, the battery is fixedly arranged on the outside of the wheelchair frame, which is easy to disassemble. At the same time, it adopts an external structure, which has low manufacturing cost and simple operation. Boost, improve its use experience.

Specifically, the locking mechanism includes a tension spring 25 arranged between the swing arm 29 and the wheelchair, a telescopic pin 26 arranged on the outer plate of the vehicle frame, and a matching pin arranged on the swing arm. The pin hole, when the pin rod is inserted into the pin hole, it can ensure that the friction wheel and the running wheel maintain frictional contact and lock this state. Preferably, the pin rod is provided with a tension spring to keep its position relative to the outer plate unchanged, and the adjacent surface of the pin rod and the swing arm is an inclined plane so as to force the pin rod to retract and insert into the pin hole middle. The use of pin rods is fixed, simple, stable and reliable.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these Improvement and retouching should also be regarded as the protection scope of the present utility model.

Claims (6)

1. A wheelchair with electric power boosting function, characterized in that it comprises a vehicle frame provided with traveling wheels and two electric power boosters respectively arranged on both sides of the vehicle frame, and said electric power booster includes The battery on the top is swingably arranged on the swing plate outside the vehicle frame. At the lower part of the swing plate, there is a friction wheel that can be in frictional contact with the walking wheel and is connected to the driving motor. On the swing plate A swing arm is arranged on the upper part, and a locking mechanism is arranged between the swing arm and the vehicle frame. 2. The wheelchair according to claim 1, wherein the locking mechanism comprises a tension spring arranged between the swing arm and the vehicle frame, a telescopic pin rod arranged on the vehicle frame, and a matching one arranged on the vehicle frame. The pin hole on the above-mentioned swing arm, when the pin bar is inserted into the pin hole, the friction wheel and the running wheel can be kept in frictional contact and this state can be locked. 3. The wheelchair according to claim 2, wherein the adjacent surface of the pin rod and the swing arm is an inclined plane so as to force the pin rod to retreat and be inserted into the pin hole. 4. The wheelchair according to claim 1, wherein the vehicle frame comprises two rear uprights, a bottom longitudinal rod fixedly connected with the two rear uprights and an upper longitudinal rod for supporting the positioning seat plate respectively. Rod, connecting the bottom longitudinal rod and the front connecting rod of the upper longitudinal rod, the battery is fixedly arranged on the front connecting rod, the electric power assist device is fixed on the outside of the upper longitudinal rod, and can control the electric power assist The handles of the device are arranged at the front ends of the armrests on both sides of the seat plate. 5. The wheelchair according to claim 4, wherein the electric power assist device further comprises an inner side plate fixedly connected to the upper longitudinal rod, an outer side plate fixedly connected to the inner side plate and kept spaced apart, and arranged on The rotating shaft between the inner plate and the outer plate, the swing arm is rotatably arranged on the rotating shaft, and the traveling motor is fixedly arranged under the rotating shaft. 6. The wheelchair according to claim 5, characterized in that, the traveling motor is connected to the friction wheel through a toothed belt transmission.