CN215307528U

CN215307528U - Electric wheelchair

Info

Publication number: CN215307528U
Application number: CN202120188651.3U
Authority: CN
Inventors: 金山海; 金彦继; 金小暄; 李佳龙; 谢继文; 朴宗道
Original assignee: Yanbian University
Current assignee: Yanbian University
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-12-28
Anticipated expiration: 2031-01-22

Abstract

The utility model relates to an electric wheelchair which comprises an encircling mechanism and a rotating mechanism. The embracing mechanism is used for supporting a person; the rotating mechanism comprises a power plate, a first connecting plate and at least one first bearing piece; the power plate and the first connecting plate are arranged at intervals in the vertical direction, the power plate is connected with the first connecting plate, the power plate can rotate around the axis of the power plate, at least one first bearing piece is circumferentially arranged along one side, close to the power plate, of the first connecting plate, one side of the first bearing piece is fixedly connected to the first connecting plate, and the encircling mechanism is installed on one side, away from the power plate, of the first connecting plate; when the embracing mechanism receives a large enough external force along the first direction, the first bearing piece is in rolling connection with the power plate, the first connecting plate and the power plate rotate relatively, and the first direction and the vertical direction are arranged at an angle. In practical use, when the electric wheelchair encounters obstacles such as a wall and the like in the moving process, the first connecting plate is static relative to the ground, so that the situation that the electric wheelchair turns on the side is effectively avoided.

Description

Electric wheelchair

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an electric wheelchair.

Background

Along with the continuous aggravation of the aging of the population and the increasing of the scientific and technical level, the electric wheelchair industry shows a vigorous development trend, more and more electric wheelchair vehicles serve the life, so that the life of people is intelligentized, the quality of life is improved, and people who are inconvenient to move or cannot walk for a long distance experience normal travel or travel life through the electric wheelchair, and great convenience is brought to people. However, in the prior art, when a rider sits on the electric wheelchair, the electric wheelchair may collide with obstacles such as a wall and the like during moving, and at the time, the electric wheelchair may have a risk of rolling over, which makes the rider sitting on the electric wheelchair likely to have an accident.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an electric wheelchair to solve the technical problem that the electric wheelchair is likely to turn over when hitting an obstacle such as a wall during moving operation.

An electrically powered wheelchair, comprising:

the embracing mechanism is used for supporting a person;

a rotating mechanism comprising a power plate, a first connecting plate and at least one first bearing member; the power plate and the first connecting plate are arranged at intervals in the vertical direction, the power plate is connected with the first connecting plate, the power plate can rotate around the axis of the power plate, at least one first bearing piece is circumferentially arranged along one side, close to the power plate, of the first connecting plate, one side of the first bearing piece is fixedly connected to the first connecting plate, and the encircling mechanism is installed on one side, away from the power plate, of the first connecting plate;

when the embracing mechanism receives a large enough external force along a first direction, the first bearing piece is in rolling connection with the power plate, the first connecting plate and the power plate rotate relatively, and the first direction is arranged at an angle with the vertical direction.

In one embodiment, the rotating mechanism further comprises a first driving member, a power output end of the first driving member is connected with the power plate, and the first driving member is used for driving the power plate to rotate along the axis of the power plate.

In one embodiment, the embracing mechanism comprises a bearing component; the bearing assembly is arranged on one side, away from the power plate, of the first connecting plate and used for bearing people, and the bearing assembly can move in the vertical direction and swing in the axis direction of the power plate.

In one embodiment, the bearing assembly includes a first bearing plate, a knee brace, and an auxiliary armrest; the first bearing plate is used for bearing the upper body of a person, the knee support plate is arranged below the first bearing plate and used for abutting against the knee of the person, and the auxiliary handrail is arranged between the first bearing plate and the knee support plate.

In one embodiment, the embracing mechanism further comprises a first mounting seat and a second driving piece; the first mounting seat is mounted on one side, away from the power plate, of the first connecting plate, the power output end of the second driving piece is connected to the first bearing plate, one side, away from the power output end, of the second driving piece is rotatably connected to the first mounting seat, and the second driving piece can drive the first bearing plate to move along the length direction of the second driving piece.

In one embodiment, the embracing mechanism further comprises a second mounting seat and a support; the second mounting seat is opposite to the first mounting seat and arranged at intervals, the second mounting seat is mounted on one side, deviating from the power plate, of the first connecting plate, one side of the supporting piece is connected to the first bearing plate, and the other side of the supporting piece is rotatably connected to the second mounting seat.

In one embodiment, the number of the second driving members is at least two, at least two of the second driving members are arranged at intervals along a second direction, and the second direction is a horizontal direction.

In one embodiment, the rotation mechanism further comprises a second connecting plate and at least one second bearing; the second connecting plate set up in the power plate deviates from one side of first connecting plate, at least one the second holds carrier and arranges along the circumference of second connecting plate, one side fixed connection that the second held carrier is in the second connecting plate, the second holds carrier and can rotates around its own axis, the second hold carrier with the power plate butt.

In one embodiment, the electric wheelchair further comprises a moving mechanism, the moving mechanism comprises a fixed plate and at least one third bearing piece, the second connecting plate is mounted on the fixed plate, the at least one third bearing piece is arranged along the circumferential direction of the fixed plate, which is far away from the second connecting plate, one side of the third bearing piece is connected with the fixed plate, and the third bearing piece can roll relative to the ground.

In one embodiment, the electric wheelchair further comprises a seat mechanism, the rotating mechanism rotates and moves a person to the seat mechanism through the surrounding mechanism, the seat mechanism comprises a seat cushion, a through groove is formed in the middle of the top end of the seat cushion, and the through groove is matched with the size of the closestool.

The utility model has the beneficial effects that:

in the practical use process, when a rider needs to rotate to a seat cushion on a seat mechanism, the rider is supported by the encircling mechanism, when the electric wheelchair does not encounter an obstacle in the moving process, the first bearing piece is abutted to the power plate, the first connecting plate and the power plate are relatively static, the movable vertical plate can drive the first connecting plate to rotate when rotating around the axis of the movable vertical plate, the encircling mechanism can also rotate with the first connecting plate, and the rider can also rotate to the seat cushion of the seat mechanism. When a rider is supported by the embracing mechanism, the electric wheelchair encounters obstacles such as a wall in the moving process, the embracing mechanism receives a large enough friction external force transmitted by the wall, when the power plate rotates around the axis of the power plate, the first bearing part is in rolling connection with the power plate, the first connecting plate and the power plate rotate relatively, the first connecting plate is static relative to the ground, the embracing mechanism cannot rotate, the supported rider is also static relative to the ground, the situation that the supported rider collides with the wall due to the fact that the embracing mechanism continues to rotate, the electric wheelchair is overturned to enable the rider to fall is effectively avoided, accidents are greatly reduced, and the rider is safer and more reliable in the using process of the electric wheelchair.

Drawings

FIG. 1 is a schematic view of an electric wheelchair according to an embodiment of the present invention;

FIG. 2 is an enlarged fragmentary view at A of the electric wheelchair shown in FIG. 1;

FIG. 3 is a front elevational view of the electric wheelchair shown in FIG. 1;

FIG. 4 is an enlarged fragmentary view at B of the electric wheelchair shown in FIG. 3;

FIG. 5 is a left side elevational view of the electric wheelchair of FIG. 1;

figure 6 is a top plan view of the electric wheelchair shown in figure 1.

Reference numerals: 100-an encircling mechanism; 110-a carrier assembly; 111-a first carrier plate; 112-knee brace; 113-an auxiliary handrail; 114-safety guard plate; 120-a second driver; 130-a support; 140-a first mount; 150-a second mount; 200-a rotation mechanism; 210-a power plate; 220-a first connection plate; 230-a first carrier; 240-a second connecting plate; 250-a second carrier; 260-a first drive member; 261-a first gear; 270-a first bearing; 280-a second bearing; 300-a seat mechanism; 310-seat cushion; 311-through groove; 400-a moving mechanism; 410-a fixed plate; 420-a third carrier; 430-fourth carrier.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, fig. 1 is a schematic view illustrating an electric wheelchair according to an embodiment of the present invention, which includes an embracing mechanism 100 and a rotating mechanism 200. The embracing mechanism 100 is used for supporting a person; the rotation mechanism 200 comprises a power plate 210, a first connecting plate 220 and at least one first bearing member 230; the power plate 210 and the first connecting plate 220 are arranged at intervals in the vertical direction, the power plate 210 is connected with the first connecting plate 220, the power plate 210 can rotate around the axis of the power plate 210, at least one first bearing piece 230 is circumferentially arranged along one side, close to the power plate 210, of the first connecting plate 220, one side of the first bearing piece 230 is fixedly connected to the first connecting plate 220, and the encircling mechanism 100 is installed on one side, away from the power plate 210, of the first connecting plate 220; when the embracing mechanism 100 receives a large enough external force along the first direction, the first bearing member 230 is in rolling connection with the power plate 210, the first connecting plate 220 and the power plate 210 rotate relatively, and the first direction and the vertical direction are arranged at an angle.

In the process of practical use, when a passenger needs to rotate the seat cushion 310 on the seat mechanism 300, the passenger is lifted by the embracing mechanism 100, when the electric wheelchair does not encounter an obstacle in the moving process, the first bearing piece 230 is abutted to the power plate 210, the first connecting plate 220 is relatively static to the power plate 210, the movable vertical plate can drive the first connecting plate 220 to rotate when rotating around the axis of the movable vertical plate, so that the embracing mechanism 100 can also rotate with the first connecting plate 220, and the passenger can also rotate to the seat cushion 310 of the seat mechanism 300. When a passenger is held up by the holding mechanism 100 and the electric wheelchair encounters obstacles such as a wall in the moving process, the holding mechanism 100 receives a large enough friction external force transmitted by the wall, when the power plate 210 rotates around the axis of the power plate, the first bearing piece 230 is in rolling connection with the power plate 210, the first connecting plate 220 rotates relative to the power plate 210, the first connecting plate 220 is static relative to the ground, the holding mechanism 100 cannot rotate, the held passenger is also static relative to the ground, the situation that the held passenger collides with the wall due to the fact that the holding mechanism 100 continues to rotate and then the electric wheelchair is turned over to enable the passenger to fall down is effectively avoided, accidents are greatly reduced, and the passenger is safer and more reliable in the using process of the electric wheelchair.

The structure of the electrically powered wheelchair will now be described in detail with reference to figures 2 to 6, figure 2 showing an enlarged view of a portion of the electrically powered wheelchair shown in figure 1 at a; FIG. 3 illustrates a front view of the electric wheelchair of FIG. 1; FIG. 4 shows an enlarged partial view of the electrically powered wheelchair of FIG. 3 at B; FIG. 5 illustrates a left side view of the electric wheelchair of FIG. 1; figure 6 shows a top view of the electrically powered wheelchair of figure 1.

Referring to fig. 1 to 4, the rotating mechanism 200 of the electric wheelchair according to an embodiment of the present invention further includes a first driving member 260, a power output end of the first driving member 260 is connected to the power plate 210, and the first driving member 260 is used for driving the power plate 210 to rotate along its own axis.

Specifically, the first driving member 260 is a 220v ac motor, and an inverter is added under the voltage of a 24v battery to convert a 24v dc voltage into a 220v ac voltage, so that the rotation is more stable and controllable. Specifically, a first gear 261 is arranged above a rotating shaft of the alternating current motor, the alternating current motor can drive the first gear 261 to rotate along the axis of the alternating current motor, the power plate 210 is of a gear structure, the first gear 261 is meshed and matched with the power plate 210, when the first gear 261 rotates along the axis of the alternating current motor, the power plate 210 can be driven to rotate along the axis of the alternating current motor, when the electric wheelchair does not encounter an obstacle, the first bearing piece 230 is abutted against the power plate 210, the first connecting plate 220 and the power plate 210 are relatively static, the embracing mechanism 100 can rotate with the first connecting plate 220, and a passenger lifted by the embracing mechanism 100 and the embracing mechanism 100 synchronously rotate; when the electric wheelchair encounters an obstacle such as a wall in the moving process, and the embracing mechanism 100 is subjected to a large enough friction external force transmitted by the wall, when the power plate 210 rotates around its own axis, the first bearing piece 230 can rotate along its own axis relative to the power plate 210, so that the first connecting plate 220 and the power plate 210 rotate relatively, the first connecting plate 220 is static relative to the ground, the embracing mechanism 100 and the first connecting plate 220 are synchronous and static relative to the ground, and a rider lifted by the embracing mechanism 100 is synchronous and static relative to the ground, thereby effectively avoiding the situation that the lifted rider collides with the wall due to the continuous rotation of the embracing mechanism 100 and then the electric wheelchair is turned over to fall down, the occurrence of accidents is greatly reduced, and the passenger is safer and more reliable in the use process of the electric wheelchair.

In one embodiment, the number of the first bearing members 230 is 8, the first bearing members 230 are roller structures, the 8 rollers are circumferentially arranged along one side of the first connecting plate 220 close to the power plate 210, and one side of each roller is fixedly connected to the first connecting plate 220. It should be noted that the number of the first bearing members 230 is not limited at all, and may be 4, or 6 or 10, as long as the first bearing members are circumferentially arranged along one side of the first connecting plate 220 close to the power plate 210, and one side of each roller is fixedly connected to the first connecting plate 220.

Referring to fig. 2, in the electric wheelchair according to an embodiment of the present invention, a second bearing 280 is connected to a middle portion of the power plate 210, a first bearing 270 is connected to a middle portion of the first connecting plate 220, the power plate 210 can rotate around the second bearing 280, and the first connecting plate 220 can rotate around the first bearing 270.

Referring to fig. 1, an embracing mechanism 100 of an electric wheelchair according to an embodiment of the present invention includes a supporting member 110; the bearing assembly 110 is disposed on a side of the first connecting plate 220 facing away from the power plate 210, the bearing assembly 110 is used for bearing a person, and the bearing assembly 110 can move in a vertical direction and swing in an axial direction of the power plate 210.

Referring to fig. 1, 3, 5 and 6, a bearing assembly 110 of an electric wheelchair according to an embodiment of the present invention includes a first bearing plate 111, a knee brace 112 and an auxiliary armrest 113; the first bearing plate 111 is used for bearing the upper body of a person, the knee support plate 112 is arranged below the first bearing plate 111, the knee support plate 112 is used for abutting against the knee of the person, and the auxiliary armrest 113 is arranged between the first bearing plate 111 and the knee support plate 112.

Referring to fig. 1 and 5, in one embodiment, the carrier assembly 110 further includes a safety protection plate 114, the safety protection plate 114 is disposed at an angle with the first carrier plate 111, when the first carrier plate 111 carries the upper body of the rider, the safety protection plate 114 is used for protecting the rider, and the rider is prevented from falling and danger is generated during the rotation of the carrier assembly 110, so that the electric wheelchair is safer.

Referring to fig. 3, the embracing mechanism 100 of the electric wheelchair according to an embodiment of the present invention further includes a first mounting seat 140 and a second driving member 120; the first mounting seat 140 is mounted on a side of the first connecting plate 220 away from the power plate 210, a power output end of the second driving element 120 is connected to the first bearing plate 111, a side of the second driving element 120 away from the power output end is rotatably connected to the first mounting seat 140, and the second driving element 120 can drive the first bearing plate 111 to move along a length direction of the second driving element 120.

Referring to fig. 1, 5 and 6, the number of the second driving members 120 of the electric wheelchair according to an embodiment of the present invention is at least two, and the at least two second driving members 120 are spaced apart along a second direction, which is a horizontal direction.

Specifically, the second driving member 120 is an air cylinder, two air cylinders are arranged at intervals in the horizontal direction, the number of the first mounting seats 140 is two, the mounting positions of the first mounting seats 140 are matched with the mounting positions of the air cylinders, the first mounting seats 140 are provided with rotating shafts, the air cylinders are rotatably connected with the rotating shafts, the air cylinders can rotate relative to the first connecting plate 220, the first bearing plate 111 is driven to rotate, meanwhile, the power output ends of the air cylinders are connected with the first bearing plate 111, the first bearing plate 111 can move relative to the length direction of the air cylinders, and the first bearing plate 111 can move in the vertical direction and swing relative to the axis of the first connecting plate 220.

Referring to fig. 3, the embracing mechanism 100 of the electric wheelchair further includes a second mounting seat 150 and a supporting member 130, the second mounting seat 150 is opposite to the first mounting seat 140 and is disposed at an interval, the second mounting seat 150 is mounted on a side of the first connecting plate 220 departing from the power plate 210, one side of the supporting member 130 is connected to the first bearing plate 111, and the other side of the supporting member 130 is rotatably connected to the second mounting seat 150. Through setting up support piece 130 for the holding power of embracing mechanism 100 is more stable, and embracing mechanism 100 is at the pivoted in-process, and is more steady, and user experience is better.

Referring to fig. 1-3 and 5, the rotating mechanism 200 of the electric wheelchair according to an embodiment of the present invention further includes a second connecting plate 240 and at least one second supporting member 250; the second connecting plate 240 is disposed on a side of the power plate 210 away from the first connecting plate 220, at least one second bearing member 250 is arranged along the circumferential direction of the second connecting plate 240, one side of the second bearing member 250 is fixedly connected to the second connecting plate 240, the second bearing member 250 can rotate around its own axis, and the second bearing member 250 abuts against the power plate 210.

In one embodiment, the number of the second bearings 250 is 8, and the 8 second bearings 250 are arranged along the circumference of the second connecting plate 240. It should be noted that the number of the second supporting members 250 is not limited at all, and may be 4, or 6 or 10, as long as the second supporting members are arranged along the circumferential direction of the second connecting plate 240, and one side of the second supporting members is fixedly connected to the second connecting plate 240.

In one embodiment, the second bearing component 250 is a roller structure, the roller can rotate around its own axis, the roller abuts against the power plate 210, and when the power plate 210 rotates along its own axis, the roller simultaneously rotates around its own axis, specifically, a large amount of lubricant is provided between the roller and the second connecting plate 240, so that the friction between the power plate 210 and the second connecting plate 240 in the rotating process is greatly reduced, and the power loss caused by overcoming the friction is effectively reduced.

Referring to fig. 1, 3, 5 and 6, the electric wheelchair according to an embodiment of the present invention further includes a moving mechanism 400, the moving mechanism 400 includes a fixing plate 410, at least one third supporting member 420 and at least one fourth supporting member 430, the second connecting plate 240 is mounted on the fixing plate 410, the at least one third supporting member 420 is arranged along a circumferential direction of the fixing plate 410 away from the second connecting plate 240, one side of the third supporting member 420 is connected to the fixing plate 410, the third supporting member 420 can roll with respect to the ground, the at least one fourth supporting member 430 is arranged along a circumferential direction of the fixing plate 410 away from the second connecting plate 240, one side of the fourth supporting member 430 is connected to the fixing plate 410, the fourth supporting member 430 can roll with respect to the ground, and the fourth supporting member 430 is arranged opposite to and spaced from the third supporting member 420.

In one embodiment, the third bearing member 420 is a driving wheel connected to a motor, the motor can drive the driving wheel to rotate around its own axis and roll relative to the ground, and the fourth bearing member 430 is a silent universal wheel, the silent universal wheel can roll relative to the ground, so that the electric wheelchair can move relative to the ground. Specifically, the driving wheel is two 24v brushless in-wheel motors, the two 24v brushless in-wheel motors are disposed on two sides of the front end of the fixing plate 410, and the mute universal wheel is disposed on two sides of the fixing plate 410 away from the 24v brushless in-wheel motors. The whole adopts the forerunner system, because at human rotatory in-process, most gravity is concentrated in the well front end of device, and the weighing of 24v brushless in-wheel motor is slightly higher than the weighing of silence universal wheel, so adopts the forerunner system. The whole device is controlled by Arduino in front, back, left and right directions of the motor, the motor has large torque and low speed in a full-pressure state, and the device is a good choice for old people to ride instead of walk.

Referring to fig. 1, 3 and 6, the electric wheelchair according to an embodiment of the present invention further includes a seat mechanism 300, the rotating mechanism 200 rotates and moves a person to the seat mechanism 300 through the embracing mechanism 100, the seat mechanism 300 includes a seat cushion 310, a through slot 311 is disposed at a middle position of a top end of the seat cushion 310, and the through slot 311 is adapted to a size of the toilet.

Specifically, when the elderly who live alone and have a semi-self-care life move to the seat mechanism 300 by rotating the embracing mechanism 100 and the rotating mechanism 200, and the electric wheelchair moves to the toilet through the moving mechanism 400, since the seat mechanism 300 includes the seat cushion 310, the through groove 311 is provided at the middle position of the top end of the seat cushion 310, and the size of the through groove 311 is the size of the hip of a normal person, and is adapted to the toilet, the elderly can easily go to the toilet without going down the device. And because the universal wheels are adopted, the old can always run backwards without completely aligning the whole electric wheelchair and the closestool, and the position of the closestool can be accurately positioned by the hip through the universal wheels.

In one embodiment, the electric wheelchair further comprises a wireless remote controller, so that a passenger can perform key operation anywhere, and the electric wheelchair is very simple and convenient.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An electrically powered wheelchair, the electrically powered wheelchair comprising:

the embracing mechanism (100), the embracing mechanism (100) is used for supporting a person;

a rotation mechanism (200), the rotation mechanism (200) comprising a power plate (210), a first connecting plate (220) and at least one first carriage (230); the power plate (210) and the first connecting plate (220) are arranged at intervals in the vertical direction, the power plate (210) is connected with the first connecting plate (220), the power plate (210) can rotate around the axis of the power plate, at least one first bearing piece (230) is circumferentially arranged along one side, close to the power plate (210), of the first connecting plate (220), one side of the first bearing piece (230) is fixedly connected to the first connecting plate (220), and the encircling mechanism (100) is installed on one side, away from the power plate (210), of the first connecting plate (220);

when the embracing mechanism (100) receives a large enough external force along a first direction, the first bearing piece (230) is in rolling connection with the power plate (210), the first connecting plate (220) and the power plate (210) rotate relatively, and the first direction and the vertical direction are arranged at an angle.

2. The electrically powered wheelchair as claimed in claim 1, wherein the rotation mechanism (200) further comprises a first drive member (260), a power output end of the first drive member (260) being connected to the power plate (210), the first drive member (260) being adapted to drive the power plate (210) in rotation along its own axis.

3. The electrically powered wheelchair according to claim 2, characterized in that the embracing mechanism (100) comprises a carrier assembly (110); the bearing assembly (110) is arranged on one side, away from the power plate (210), of the first connecting plate (220), the bearing assembly (110) is used for bearing people, and the bearing assembly (110) can move in the vertical direction and swing in the axis direction of the power plate (210).

4. The electrically powered wheelchair according to claim 3, characterized in that the carrier assembly (110) comprises a first carrier plate (111), a knee brace (112) and an auxiliary armrest (113); the first bearing plate (111) is used for bearing the upper body of a person, the knee support plate (112) is arranged below the first bearing plate (111), the knee support plate (112) is used for abutting against the knee of the person, and the auxiliary armrest (113) is arranged between the first bearing plate (111) and the knee support plate (112).

5. The electrically powered wheelchair as claimed in claim 4, wherein the embracing mechanism (100) further comprises a first mounting seat (140) and a second drive member (120); the first mounting seat (140) is mounted on one side, away from the power plate (210), of the first connecting plate (220), the power output end of the second driving piece (120) is connected to the first bearing plate (111), one side, away from the power output end, of the second driving piece (120) is rotatably connected to the first mounting seat (140), and the second driving piece (120) can drive the first bearing plate (111) to move along the length direction of the second driving piece (120).

6. The electrically powered wheelchair according to claim 5, characterized in that the embracing mechanism (100) further comprises a second mounting seat (150) and a support (130); the second mounting seat (150) is opposite to the first mounting seat (140) and is arranged at an interval, the second mounting seat (150) is mounted on one side, deviating from the power plate (210), of the first connecting plate (220), one side of the supporting piece (130) is connected to the first bearing plate (111), and the other side of the supporting piece (130) is rotatably connected to the second mounting seat (150).

7. The electrically powered wheelchair as claimed in claim 5, wherein the number of the second drive members (120) is at least two, at least two of the second drive members (120) being spaced apart in a second direction, the second direction being a horizontal direction.

8. The electrically powered wheelchair according to claim 1, characterized in that the rotation mechanism (200) further comprises a second connecting plate (240) and at least one second carrier (250); the second connecting plate (240) is arranged on one side, away from the first connecting plate (220), of the power plate (210), at least one second bearing piece (250) is arranged along the circumferential direction of the second connecting plate (240), one side of the second bearing piece (250) is fixedly connected to the second connecting plate (240), the second bearing piece (250) can rotate around the axis of the second bearing piece, and the second bearing piece (250) is abutted to the power plate (210).

9. The electrically powered wheelchair according to claim 8, further comprising a moving mechanism (400), the moving mechanism (400) comprising a fixed plate (410) and at least one third bearing (420), the second connecting plate (240) being mounted to the fixed plate (410), the at least one third bearing (420) being arranged along a circumference of the fixed plate (410) facing away from the second connecting plate (240), one side of the third bearing (420) being connected to the fixed plate (410), the third bearing (420) being rollable relative to the ground.

10. The electric wheelchair as claimed in claim 1, further comprising a seat mechanism (300), wherein the rotating mechanism (200) rotates and moves the person to the seat mechanism (300) through the embracing mechanism (100), the seat mechanism (300) comprises a seat cushion (310), a through groove (311) is formed in the middle position of the top end of the seat cushion (310), and the through groove (311) is adapted to the size of a toilet.