CN220089807U - Electric wheelchair - Google Patents

Abstract

The utility model relates to an electric wheelchair, and belongs to the technical field of electric wheelchairs. The electric wheelchair comprises a main body, a backrest and supporting legs, wherein the backrest is rotatably arranged at the rear of the top end of the main body, the inclination angle of the backrest can be adjusted, the supporting legs are rotatably arranged at the rear of the main body, and the supporting legs can extend backwards and land; the electric wheelchair has a first state in which the backrest stands up and the support legs are retracted to the main body or the rear of the backrest, and a second state in which the backrest is tilted rearward and the support legs are extended rearward to the ground. According to the electric wheelchair provided by the utility model, the top end of the main body and the backrest form the seat together, a user can sit on the top end of the main body and lean against the backrest, the backrest can rotate, the user can sit and stand, and can also recline or lie flat, and when lying obliquely or lying flat, the supporting legs are turned backwards to prop the ground, so that an auxiliary support is formed, the electric wheelchair can be effectively prevented from toppling due to the backward movement of the center of gravity, and the use safety of the electric wheelchair is effectively ensured.

Description

Electric wheelchair

Technical Field

The utility model belongs to the technical field of electric wheelchairs, and particularly relates to an electric wheelchair.

Background

At present, the global population aging is particularly prominent, the development of special disability groups brings about the market diversification demands of the old health industry and the special group industry, and how to provide corresponding products and services for the special group has become a common topic of attention of health industry practitioners and social communities. With the improvement of living standard of residents, people have raised higher requirements on the quality, the use performance and the comfort of products, and the urban living rhythm is accelerated, so that the time for children to care the old and the patient at home is shorter and shorter, and the old and the disabled cannot be conveniently cured by using the manual wheelchair, and how to solve the problem becomes a topic of increasing concern for society.

With the advent of electric wheelchairs, people have seen the hope of regaining freshness. The elderly and disabled people can walk independently by operating the electric wheelchair without help of others, so that the life and work of the elderly and disabled people are easier and more convenient.

Referring to the patent number CN2015102668248 and the patent name of the utility model of an electric wheelchair, the current electric wheelchair is generally only in a sitting and standing state, and if the old or the disabled sits and stands for a long time, the waist becomes painful and inconvenient to use.

Disclosure of Invention

In view of the above, an object of the present utility model is to provide an electric wheelchair that allows a user to sit upright, recline or lie flat, and that is supported by support legs while being reclined or lying flat, thereby effectively preventing the electric wheelchair from toppling over.

The technical scheme of the utility model is as follows:

the utility model provides an electric wheelchair which comprises a main body, a backrest and supporting legs, wherein the backrest is rotatably arranged behind the top end of the main body, the inclination angle of the backrest can be adjusted, the supporting legs are rotatably arranged behind the main body, and the supporting legs can extend backwards and land; the electric wheelchair has a first state in which the backrest is raised, the support legs are retracted to the rear of the main body or the backrest, and a second state in which the backrest is tilted rearward, and the support legs are extended rearward to the ground.

As an alternative to the above embodiment, the support leg includes a rotating arm and a leg seat, two ends of the rotating arm are respectively hinged to the main body and the support leg, and a support plate for supporting the ground is provided at a bottom end of the support leg.

As an alternative to the above embodiments, the support leg comprises two said swivel arms, the main body, the leg rest and the two swivel arms forming a parallel four bar linkage.

As an alternative to the above embodiment, the main body includes a base, a handrail and a travelling wheel, where the handrail and the travelling wheel are both disposed on two sides of the base, and the handrail is rotatably connected with the base, so that the handrail can rotate along with the backrest, and a rocker is disposed on the handrail.

As an alternative to the above embodiment, the backrest includes a rotating portion rotatably connected with the main body, a middle portion located between the rotating portion and the leaning portion, and shock absorbing members provided between the middle portion and the rotating portion and between the middle portion and the leaning portion.

As an alternative to the above embodiment, the electric wheelchair further includes a headrest liftably provided at a top end of the backrest.

As an alternative to the above embodiment, the electric wheelchair further includes an umbrella detachably disposed at a top end of the support leg, and the umbrella is disposed obliquely and is located above the main body.

As an alternative of the above embodiment, the umbrella comprises an umbrella handle, an umbrella cover, a collar, ribs and a screw nut component, wherein the umbrella cover is connected with the umbrella handle, the collar is slidably sleeved on the umbrella handle, the ribs are hinged with the umbrella cover and the collar respectively, and the screw nut component is arranged in the umbrella handle and is used for driving the collar to slide along the umbrella handle.

As an alternative scheme of the above embodiment, the front end of the main body is provided with a camera, the armrest is provided with a display screen, the display screen is used for displaying information shot by the camera, and the electric wheelchair is provided with a remote control module.

As an alternative to the above embodiment, the rear end of the main body is provided with a storage box.

The beneficial effects of the utility model are as follows:

according to the electric wheelchair provided by the utility model, the top end of the main body and the backrest form the seat together, a user can sit on the top end of the main body and lean against the backrest, the backrest can rotate, the user can sit and stand, and can also recline or lie flat, and when lying obliquely or lying flat, the supporting legs are turned backwards to prop the ground, so that an auxiliary support is formed, the electric wheelchair can be effectively prevented from toppling due to the backward movement of the center of gravity, and the use safety of the electric wheelchair is effectively ensured.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. The above and other objects, features and advantages of the present utility model will become more apparent from the accompanying drawings. Like reference numerals refer to like parts throughout the several views of the drawings. The drawings are not intended to be drawn to scale, with emphasis instead being placed upon illustrating the principles of the utility model.

Fig. 1 is a schematic structural diagram of an electric wheelchair according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of an electric wheelchair according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram III of an electric wheelchair according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of an electric wheelchair according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of an electric wheelchair according to an embodiment of the present utility model;

fig. 6 is a schematic view of a part of an umbrella of the electric wheelchair according to an embodiment of the present utility model.

Icon: 10-an electric wheelchair; 11-a body; 12-a backrest; 13-supporting legs; 14-umbrella; 110-a base; 111-armrests; 112-travelling wheels; 113-a camera; 114-a display screen; 115-rocker; 116-a storage box; 120-rotating part; 121-a transfer section; 122-resting portion; 123-a shock absorbing assembly; 124-headrest; 130-a swivel arm; 131-supporting leg seats; 140-umbrella handle; 141-umbrella cover; 142-collar; 143-umbrella ribs; 144-lead screw nut assembly.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Referring to fig. 1-5, an embodiment of the present utility model provides an electric wheelchair 10, wherein the electric wheelchair 10 is mainly suitable for elderly people or disabled people with mobility impairment.

The electric wheelchair 10 is mainly composed of a main body 11, a backrest 12, and support legs 13, and each of the components is discussed in detail below.

The structure of the main body 11 can refer to the prior art, and in this embodiment, the main body 11 includes a seat 110, a traveling wheel 112, and an armrest 111.

The top end of the seat body 110 forms a sitting face, which may be a plane or a curved surface according to the human body mechanics structure. The front end of the main body 11 may be provided with a pedal portion for a user to pedal. The rear end of the main body 11 may be provided with a storage box 116, and the storage box 116 is used for storing sundries.

The number and the style of the travelling wheels 112 are not limited, the travelling wheels 112 can adopt a crawler type structure or a roller type structure, etc., in this embodiment, the travelling wheels 112 adopt a roller type structure, the travelling wheels 112 comprise two main wheels and two steering wheels, the two main wheels are arranged at two sides of the main body 11, the two steering wheels are arranged at the front end of the main body 11, and the steering wheels and the main body 11 can rotate relatively so as to steer the electric wheelchair 10. The main wheel may be driven by a driving assembly, which may include a motor, a gear reducer, etc., and the structure of the driving assembly and how the driving assembly drives the electric wheelchair 10 to walk may be referred to in the prior art.

The number of armrests 111 may be two, two armrests 111 being located on each side of the body 11, the armrests 111 being adjacent to the main wheel. The form of the armrest 111 is not limited, and for example, the armrest 111 has a triangular structure, a rectangular structure, a frame-shaped structure, or the like, and the top of the armrest 111 is a supporting surface. The support surface may be provided with a control structure such as a rocker 115, and a user may control the electric wheelchair 10 to move forward, backward, turn, etc. through the rocker 115. In addition, the front end of the main body 11 may be provided with a camera 113 capable of rotating in multiple directions, the armrest 111 is provided with a display screen 114, the display screen 114 is used for displaying information photographed by the camera 113, and the electric wheelchair 10 is provided with a remote control module to realize remote control.

The backrest 12 is disposed behind the top end of the main body 11, one side of the backrest 12 forms a leaning surface, and the back of the user can lean against the leaning body. The shape of the backrest 12 is not limited, and reference may be made to the prior art, and in this embodiment, the structure of the backrest 12 may adopt, but is not limited to, the following: the backrest 12 includes a rotating portion 120, a transferring portion 121 and a leaning portion 122, the rotating portion 120 is rotatably connected with the main body 11, the transferring portion 121 is located between the rotating portion 120 and the leaning portion 122, shock absorbing components 123 are disposed between the transferring portion 121 and the rotating portion 120 and between the transferring portion 121 and the leaning portion 122, the type of the shock absorbing components 123 is not limited, for example, shock absorbing effects of the shock absorbing components 123 of the two portions may be different by using shock absorbing springs or the like. By this arrangement, the backrest 12 can absorb shock in various forms with a good shock absorbing effect.

In some embodiments, the electric wheelchair 10 further includes a headrest 124, the headrest 124 is disposed at the top end of the backrest 12 in a liftable manner, and the connection between the headrest 124 and the backrest 12 may be referred to in the prior art, for example, a chute is disposed on the backrest 12, and a slider is disposed on the headrest 124, where the slider is slidably engaged with the chute. In other embodiments, the electric wheelchair 10 may not include the headrest 124.

The backrest 12 is rotatably matched with the main body 11, namely, the bottom end of the backrest 12 is pivoted with the main body 11 through a pivot shaft, and the backrest 12 can rotate around the pivot shaft.

The backrest 12 may be rotated relative to the main body 11, either manually or electrically, or by a combination of manual and electrical controls. If electric control is adopted, the motor is in transmission fit with the pivot shaft, and the motor can drive the pivot shaft to rotate around the axis of the motor when in operation, and the pivot shaft drives the backrest 12 to rotate.

In the process of rotating the backrest 12 relative to the main body 11, the inclination angle of the backrest 12 can be adjusted, that is, the included angle between the leaning surface of the backrest 12 and the sitting surface of the seat body 110 can be adjusted, and the included angle between the leaning surface and the sitting surface can be adjusted according to requirements, for example, the included angle between the leaning surface and the sitting surface is 90 °, 120 °, 150 °, 180 ° and the like. The angle between the leaning surface and the sitting surface is different, and the state of the user is different, for example, when the angle between the leaning surface and the sitting surface is 90 degrees, the user is in a sitting state, when the angle between the leaning surface and the sitting surface is 120 degrees, and the like, the user is in an inclined leaning state, and when the angle between the leaning surface and the sitting surface is 180 degrees, the user is in a lying state.

Generally, when the user needs the electric wheelchair 10 to walk, the included angle between the leaning surface and the sitting surface is approximately 90 degrees; when the electric wheelchair 10 is stationary, a user needs to lean to rest, and the included angle between the leaning surface and the sitting surface can be adjusted to be between 90 degrees and 180 degrees according to the requirement. Of course, the user may operate the electric wheelchair 10 to walk while leaning.

In the conventional electric wheelchair 10, the backrest 12 is located at the rear, and it is known that when the backrest 12 is turned backward and the user leans or lies flat, the center of gravity moves backward, and the larger the reclining angle is, the more the center of gravity is rearward, which may cause the electric wheelchair 10 to topple backward, with a certain safety hazard. Therefore, in the present embodiment, the stability and reliability of the electric wheelchair 10 are enhanced by adding the support legs 13, specifically, the support legs 13 are rotatably disposed at the rear of the main body 11, the rotation modes of the two are not limited, the support legs 13 can be extended rearward, and the support legs 13 can be landed.

The structure of the support leg 13 is not limited, and for example, the support leg 13 includes a rotation arm 130 and a leg housing 131, and both ends of the rotation arm 130 are respectively hinged to the main body 11 and the support leg 13, and the support leg 13 can be moved closer to or farther from the ground when the rotation arm 130 rotates relative to the main body 11.

The structure of supporting leg 13 is not limited, and the bottom of supporting leg 13 can be provided with the backup pad that is used for propping up the ground, and the backup pad can be with ground surface contact, increases area of contact, avoids supporting leg 13 to cause the destruction to ground.

The number of the rotating arms 130 is not limited, and if the number of the rotating arms 130 is one, the rotating arms 130 and the main body 11, and the rotating arms 130 and the supporting legs 13 are driven to rotate by separate motors. If the number of the rotating arms 130 is two or more, the two ends of each rotating arm 130 are respectively hinged with the main body 11 and the supporting leg 13, the main body 11, the supporting leg seat 131 and the two rotating arms 130 form a parallel four-bar mechanism, and at this time, only one rotating arm 130 is controlled to rotate by a motor, so that the supporting leg 13 can be lifted.

The electric wheelchair 10 has a first state and a second state: when the electric wheelchair 10 is in the first state, the backrest 12 is raised, the angle between the backrest 12 and the seat 110 may be approximately 90 °, the supporting legs 13 are retracted, the supporting legs 13 are located behind the main body 11 or the backrest 12, and the leg rest 131 may be adjacent to the rear of the main body 11 or the backrest 12. When the electric wheelchair 10 is in the second state, the backrest 12 is inclined backward, the supporting legs 13 are unfolded and extend backward, the leg rest 131 is grounded, the landing point of the leg rest 131 can be located right under or obliquely backward of the backrest 12, and the more backward the landing point of the leg rest 131 is, the more stable the electric wheelchair 10 is.

When a user leans, it is inconvenient to control the rocker 115 and the like on the armrest 111 due to the view angle and the like, and the larger the leaning angle is, the more difficult to operate, and therefore, in the present embodiment, the following improvement scheme is provided: the armrest 111 is rotatably connected with the seat body 110, the rotational connection position of the armrest 111 and the seat body 110 is not limited, the rotational axis between the armrest 111 and the seat body 110 can extend along the left-right direction of the electric wheelchair 10, the rotation between the armrest 111 and the seat body 110 can be manually controlled, and the electric control can be realized through a motor, so that the armrest 111 can rotate along with the backrest 12, and the rotation of the armrest 111 and the seat body 110 can be synchronously realized, or can be independently controlled. When a user leans against the backrest, the armrest 111 correspondingly rotates, and the included angle between the armrest 111 and the backrest 12 is approximately 90 degrees, so that the user can conveniently and continuously use the backrest for operation.

In addition, in some special days, such as rainy days, sun days, etc., the user needs to hold the umbrella 14 with his/her hand, and the electric wheelchair 10 may further include the umbrella 14, and the umbrella 14 may be a general umbrella, a sunshade, etc., mainly for keeping out rain, sunshade, etc. The umbrella 14 is detachably arranged at the top end of the supporting leg 13, and the umbrella 14 is obliquely arranged and positioned above the main body 11.

The structure of the umbrella 14 can refer to the prior art, for example, the umbrella 14 comprises an umbrella handle 140, an umbrella cover 141, a collar 142 and ribs 143, the umbrella cover 141 is connected with the umbrella handle 140, the collar 142 is slidably sleeved on the umbrella handle 140, the ribs 143 are respectively hinged with the umbrella cover 141 and the collar 142, and when the collar 142 slides along the umbrella handle 140, the umbrella cover 141 can be driven to be unfolded or folded by the ribs 143.

In some embodiments, referring to fig. 6, the umbrella 14 further includes a screw-nut assembly 144, where the screw-nut assembly 144 includes a screw and a nut, the screw is disposed in the umbrella handle 140 in a penetrating manner, the screw can rotate around its own axis under the action of a motor or the like, the nut is disposed on the screw, the nut can slide along the axial direction of the umbrella handle 140, and the nut cannot rotate relative to the umbrella handle 140. The nut is connected with the collar 142, and when the screw rod rotates around the axis of the screw rod, the nut can be driven to slide along the axial direction of the umbrella handle 140, the nut drives the collar 142 to slide along the umbrella handle 140, and the collar 142 drives the umbrella cover 141 to be unfolded or folded.

The controller of the backrest 12, the controller of the supporting leg 13, the controller of the armrest 111, the controller of the umbrella 14, etc. may be provided on the armrest 111.

With the electric wheelchair 10 in the first state as the initial state, the usage method of the electric wheelchair 10 provided in this embodiment is as follows: the user sits on the electric wheelchair 10, is in a sitting state, can lean on the backrest 12 on the back, and can put two hands on the two armrests 111; if the electric wheelchair 10 needs to be moved forward, backward, or turned, etc., the rocking lever 115 can be controlled correspondingly to realize different actions; when a user needs to lean or lie down, the controller controls the supporting legs 13 to rotate, the rotating arms 130 rotate relative to the base 110, the supporting leg bases 131 rotate relative to the rotating arms 130, and the supporting leg bases 131 move backwards and downwards until the supporting leg bases 131 contact the ground; then the backrest 12 and the armrest 111 are controlled to rotate by the controller, and the inclination angle of the backrest 12 is adjusted to an appropriate angle; after the adjustment is completed, the electric wheelchair 10 is in the second state; when a user needs to open or close the umbrella 14, the controller controls the screw and nut assembly 144 to work, the screw rotates to drive the nut to lift along the umbrella handle 140, the nut drives the collar 142 to slide along the umbrella handle 140, and the collar 142 drives the umbrella cover 141 to be unfolded or folded through the umbrella ribs 143.

When the user needs to walk the electric wheelchair 10, he or she needs to straighten the backrest 12, reset the armrests 111, retract the support legs 13, and then control the electric wheelchair 10 to walk by the rocking lever 115 or the like.

The steps may be adjusted, increased or decreased as needed, for example, in some embodiments, the armrest 111 of the wheelchair 10 cannot be rotated, so that the user does not need to adjust the angle of the armrest 111, or the wheelchair 10 does not include the umbrella 14, so that the user does not need to unfold or fold the umbrella 14, or so forth.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The electric wheelchair is characterized by comprising a main body, a backrest and supporting legs, wherein the backrest is rotatably arranged behind the top end of the main body, the inclination angle of the backrest can be adjusted, the supporting legs are rotatably arranged behind the main body, and the supporting legs can extend backwards and land; the electric wheelchair has a first state in which the backrest is raised, the support legs are retracted to the rear of the main body or the backrest, and a second state in which the backrest is tilted rearward, and the support legs are extended rearward to the ground.

2. The electric wheelchair according to claim 1, wherein the support leg comprises a swivel arm and a leg base, both ends of the swivel arm are hinged to the main body and the support leg, respectively, and a support plate for supporting the ground is provided at the bottom end of the support leg.

3. The electric wheelchair of claim 2 wherein the support leg includes two of the swivel arms, the main body, the leg rest and the two swivel arms forming a parallel four bar linkage.

4. The electric wheelchair of claim 1, wherein the main body comprises a seat, an armrest and road wheels, the armrest and the road wheels are disposed on two sides of the seat, the armrest is rotatably connected with the seat so that the armrest can rotate with the backrest, and a rocker is disposed on the armrest.

5. The electric wheelchair according to claim 4, wherein a camera is provided at the front end of the main body, a display screen is provided on the armrest, the display screen is used for displaying information photographed by the camera, and the electric wheelchair is provided with a remote control module.

6. The electric wheelchair of claim 1, wherein the backrest comprises a rotating portion, a transfer portion and a leaning portion, the rotating portion is rotatably connected with the main body, the transfer portion is located between the rotating portion and the leaning portion, and shock absorbing assemblies are disposed between the transfer portion and the rotating portion, and between the transfer portion and the leaning portion.

7. The electric wheelchair of claim 1 further comprising a headrest liftably disposed on a top end of the backrest.

8. The electric wheelchair of claim 1 further comprising an umbrella detachably disposed on top of the support leg, the umbrella being disposed obliquely and above the body.

9. The electric wheelchair of claim 8, wherein the umbrella comprises an umbrella handle, an umbrella cover, a collar, an umbrella rib and a screw nut assembly, the umbrella cover is connected with the umbrella handle, the collar is slidably sleeved on the umbrella handle, the umbrella rib is hinged with the umbrella cover and the collar respectively, and the screw nut assembly is arranged in the umbrella handle and is used for driving the collar to slide along the umbrella handle.

10. The electric wheelchair of claim 1, wherein the rear end of the main body is provided with a storage box.