Intelligent wheelchair

Abstract

The invention discloses an intelligent wheelchair, and relates to the field of intelligent wheelchairs, the intelligent wheelchair is characterized in that the outer side of a wheelchair body is provided with an external wheel assembly, the lower end of a seat assembly is nested and butted with a counterweight assembly, and the lower end surface of the seat assembly is nested with a movable guide part. According to the intelligent wheelchair, the self-adaptive gravity center adjusting mechanism is arranged, in the moving process of the whole wheelchair body, the gravity center state of the whole wheelchair body is effectively kept in cooperation with the counterweight assembly with the lower end vertically downward all the time, and when a user makes contact with external force to incline or incline in the climbing process, the self-adaptive gravity center adjusting mechanism can adjust the gravity center of the whole wheelchair body. The reserved electric push rod is separated from the limiting state between the electric push rod and the butt-joint connecting piece, at the moment, the butt-joint connecting piece in butt joint with the external wheel assembly correspondingly rotates upwards along the outer side of the wheelchair body according to the skew state of the wheelchair body, and therefore the wheelchair body in the skew state forms a reverse supporting effect; the gravity center state is changed in cooperation with the counterweight assembly, and the overall balance state of the wheelchair is controlled and adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent wheelchairs, and particularly to an intelligent wheelchair. Background Art

[0002] As an instrument for the physical rehabilitation of patients, an intelligent wheelchair is an effective means of transportation for the physically disabled. With the continuous progress of intelligent diagnosis and treatment technologies, the technical level of the intelligent wheelchair with a combination of online and offline warnings has been widely popularized and applied in various rehabilitation links.

[0003] For example, a patent for an intelligent wheelchair with the publication number CN208301812U includes a chassis, a seat installed on the chassis, a front wheel frame and a rear wheel frame respectively installed at the front and rear ends of the chassis. Two first hinge parts and two second hinge parts are provided at the rear end of the chassis. The rear wheel frame is provided with two third hinge parts and two fourth hinge parts. The two third hinge parts are respectively hinged to the two first hinge parts, the two fourth hinge parts are respectively hinged to one end of a buffer member, and the two second hinge parts are respectively hinged to the other ends of the two buffer members. The chassis of the intelligent wheelchair has shock absorption performance, which can improve the comfort of the intelligent wheelchair during driving. Another example is a patent for an intelligent wheelchair with the publication number CN209662012U, which includes a seat board. A universal moving mechanism is provided at the bottom of the seat board. The universal moving mechanism includes a universal rolling ball and at least three driving devices. Each driving device is in contact with the universal rolling ball, and each driving device is used to jointly drive the universal rolling ball to roll. By controlling the rotation speeds of the three driving devices, the universal rolling ball can be driven to roll in the direction of the resultant force of the three driving devices, thereby driving the intelligent wheelchair to move in the direction of the resultant force. The universal rolling ball is spherical and can roll in any direction, enabling the intelligent wheelchair to move in any direction and making the intelligent wheelchair more flexible. For example, a patent for an intelligent wheelchair with the publication number CN222172490U includes a frame, a seat located above the frame, and a chassis located below the frame. The intelligent wheelchair further includes a first laser sensor and a three-dimensional image sensor. The first laser sensor is located below the chassis, and the three-dimensional image sensor is located on the armrest. The detection direction of the first laser sensor faces the forward direction, the left translation direction, and the right translation direction of the intelligent wheelchair, and the detection direction of the three-dimensional image sensor faces the forward direction of the intelligent wheelchair. The three-dimensional image sensor and the first laser sensor are used for detecting obstacles in front to avoid potential safety hazards caused by solely relying on the user to find the way and avoid obstacles by themselves. Most of the above-mentioned prior arts improve their overall structures. However, during the use of existing intelligent wheelchairs, most of them are in a fixed transmission state. When the user is tilted or climbing a slope due to external force and the wheelchair skews, it cannot effectively maintain the overall center of gravity, resulting in dangerous situations such as rollover. Especially when encountering an obstacle in the blind spot of vision, when the tire touches a raised object, the overall wheelchair will tilt at a large angle, and there is a great hidden danger of center-of-gravity instability as the center of gravity of the human body shifts and presses laterally. Therefore, there are certain limitations in use. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent wheelchair to solve the problem proposed in the above background technology that when the user is tilted or climbing a slope due to external force and the wheelchair skews, it cannot effectively maintain the overall center of gravity, resulting in dangerous situations such as rollover. Especially when encountering an obstacle in the blind spot of vision, when the tire touches a raised object, the overall wheelchair will tilt at a large angle, and there is a great hidden danger of center-of-gravity instability as the center of gravity of the human body shifts and presses laterally.

[0005] To achieve the above purpose, the present invention provides the following technical solution: an intelligent wheelchair, including a wheelchair body, an external wheel assembly is installed on the outer side of the wheelchair body, and a seat assembly is arranged in the middle of the wheelchair body; a counterweight assembly is nested and docked at the lower end of the seat assembly, and a movable guide is nested and installed on the lower end surface of the seat assembly. A return spring is fixedly connected to the outside of the movable guide, and the return spring is mutually docked with the lower end of the seat assembly. The shaft end of the external wheel assembly is docked with a docking connector, and the docking connector is rotatably docked with the wheelchair body. An adaptive center-of-gravity adjustment mechanism is arranged between the external wheel assembly and the seat assembly to control the overall tilt state of the wheelchair body through the adaptive center-of-gravity adjustment mechanism.

[0006] Further, the adaptive center-of-gravity adjustment mechanism is provided with a contact switch assembly, and the contact switch assembly is docked on the surfaces of the movable guide and the seat assembly. A reserved electric push rod is installed inside the edge of the wheelchair body, and the reserved electric push rod is electrically connected to the contact switch assembly, and the reserved electric push rod is powered by a reserved storage battery.

[0007] Further, a nested fitting is nested and installed inside the edge of the wheelchair body, and a guiding connector is docked at the lower end of the nested fitting. At the same time, magnet pieces are fixedly connected to the outer sides of the guiding connector and the docking connector. An internal reserved liquid bag is adhesively connected to the upper end of the nested fitting, and the internal reserved liquid bag is arranged inside the edge of the wheelchair body.

[0008] Further, when the reserved electric push rod receives an electrical signal formed by two sets of contact switch components in contact with each other, it drives its output end to move downward, and the reserved electric push rod disengages from the limiting state with the docking connector, and the docking connector forms a rotating state along the inner side of the wheelchair body.

[0009] Further, during the upward rotation of the docking connector, it synchronously presses the contacting guiding connector, and the guiding connector drives the nested fitting at the upper end to form a synchronous position movement, and the nested fitting forms a pressing state on the contacted built-in reserved liquid sac.

[0010] Further, an active support structure is arranged inside the seat assembly to adaptively adjust the center of gravity of the occupant; the active support structure is provided with a supply pipe, and the supply pipe is arranged inside the built-in reserved liquid sac and runs through the inner side of the wheelchair body, and an external reserved liquid sac is arranged on the surface layer of the seat assembly, and the external reserved liquid sac is connected to the supply pipe.

[0011] Further, the built-in reserved liquid sac forms a synchronous supply operation through the supply pipe into the external reserved liquid sac at the end, and the external reserved liquid sac expands to support and prompt the user's buttocks.

[0012] Further, the adaptive center-of-gravity adjustment mechanism is also provided with a first liquid sac component, and the first liquid sac component is arranged inside the seat assembly, and a convex structure is arranged outside the movable guide member, and the first liquid sac component corresponds to the outer side position of the movable guide member, and a supply hose is connected to the inner side of the first liquid sac component and runs through the inner side of the wheelchair body; a limit docking member is nested and installed inside the edge of the wheelchair body, and a spring component connected to the inner side of the wheelchair body is fixedly connected to the upper end of the limit docking member, and a second liquid sac component is connected to the outer side of the limit docking member, and the second liquid sac component is connected to the supply hose.

[0013] Further, during the outward movement of the movable guide member, it presses the contacted first liquid sac component, and the first liquid sac component supplies to the inside of the second liquid sac component through the supply hose, and the second liquid sac component pushes the outer limit docking member to move downward along the inner side of the wheelchair body until the limit docking member disengages from the limiting state with the docking connector.

[0014] Compared with the prior art, the beneficial effects of the present invention are: The intelligent wheelchair is provided with an adaptive center of gravity adjustment mechanism. During the activity of the entire wheelchair body, the overall wheelchair body will cooperate with the counterweight component with the lower end always pointing vertically downward to effectively maintain its center of gravity state. When the user contacts an external force to form an inclination or tilts during the climbing process, the seat component with the corresponding inclination angle will resist through the counterweight component with the vertical center of gravity downward, and simultaneously apply pressure to the movable guide member in contact with the corresponding position. When the reserved electric push rod receives the electric signal formed by the two sets of contact switch components in contact with each other, it will drive its output end to move downward, so that the reserved electric push rod will be separated from the limited state between the docking connector. At this time, the docking connector docked with the external wheel assembly will rotate upward along the outer side of the wheelchair body according to the tilted state of the wheelchair body, so that the wheelchair body in the side tilted state forms a reverse support effect, cooperates with the counterweight component to change its center of gravity state, and controls and adjusts the overall balance state of the wheelchair to avoid dangerous situations such as rollover. Furthermore, during the reciprocating drive process, the electric push rod will record data through the preset Bluetooth output terminal. If the number of drives in a single period is too many, a signal transmission prompt will be sent to the user's family's mobile phone to remind the user's family to accompany or observe in time, so as to avoid the subsequent adverse effects caused by the user's activities on the bumpy road surface, and effectively carry out online and offline synchronous intelligent diagnosis and treatment work; Furthermore, a movable support structure is provided. When the docking connector moves upward under force, its upper end will simultaneously apply pressure to the contacting guide connector, so that the guide connector drives the nested fitting at the upper end to move upward to the contacting built-in reserved liquid bag, and then the pressurized built-in reserved liquid bag is synchronously supplied to the external reserved liquid bag at the end through the supply pipe, and the external reserved liquid bag will expand along the bottom of the seat assembly to support the user's buttocks, so that the user can move to the opposite position of the rollover state in time. Even when the user contacts an obstacle in the blind spot of the field of vision, the tire contacts the protruding object and the whole wheelchair tilts at a large angle, the center of gravity of the human body is avoided from shifting and lateral pressure, thereby ensuring its safety in use. Furthermore, another transmission mode of the adaptive center of gravity adjustment mechanism is provided. During the outward movement of the movable guide member, it will apply pressure to the first liquid bag member in contact through the outer protruding member, and the first liquid bag member will supply liquid to the inside of the second liquid bag member through the supply hose, so that the second liquid bag member pushes the outer limiting docking member to move downward along the inner side of the wheelchair body until the limiting docking member is separated from the limiting state between the docking connector. At this time, the docking connector connected to the external wheel assembly will synchronously process the separation from the limiting state, thereby effectively performing the reverse support work of the rollover state of the external wheel assembly. At the same time, after being separated from the stress state, the docking connector will be reset through the relatively connected spring assembly to ensure its operational practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the external wheel assembly of the present invention; Figure 3 Schematic diagram of the partial three-dimensional structure of the seat assembly of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the partially enlarged structure in; Figure 5 Schematic diagram of the three-dimensional structure of the contact switch assembly of the present invention; Figure 6 Schematic diagram of the half-sectional three-dimensional structure of the docking connector of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the supply pipe of the present invention; Figure 8 Schematic diagram of the three-dimensional structure of the built-in reserved liquid sac of the present invention; Figure 9 Schematic diagram of the three-dimensional structure of the movable guide of the present invention; Figure 10 Schematic diagram of the partial three-dimensional structure of the seat assembly of the present invention; Figure 11 Schematic diagram of the three-dimensional structure of the first liquid sac component in the third embodiment of the present invention; Figure 12 Schematic diagram of the three-dimensional structure of the second liquid sac component in the third embodiment of the present invention.

[0016] In the figure: 1, wheelchair body; 2, external wheel assembly; 3, seat assembly; 4, counterweight assembly; 5, movable guide; 6, return spring; 7, contact switch assembly; 8, reserved electric push rod; 9, docking connector; 10, guide connector; 11, nested fitting; 12, magnet component; 13, built-in reserved liquid sac; 14, supply pipe; 15, external reserved liquid sac; 16, first liquid sac component; 17, supply hose; 18, second liquid sac component; 19, limit docking piece. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment 1: Please refer to Figure 1 and Figures 3 - 10, to solve the technical problem that when the user is in a tilted state or skews during the process of climbing a slope due to contact with external forces, the user cannot effectively maintain the overall center of gravity, resulting in dangerous situations such as rollover, the present invention provides the following technical solution: An intelligent wheelchair, an external wheel assembly 2 is installed on the outer side of the wheelchair body 1, and a seat assembly 3 is arranged in the middle of the wheelchair body 1; A counterweight assembly 4 is nested and docked at the lower end of the seat assembly 3, and a movable guide member 5 is nested and installed on the lower end surface of the seat assembly 3. A return spring 6 is fixedly connected to the outer side of the movable guide member 5, and the return spring 6 is mutually docked with the lower end of the seat assembly 3. A docking connector 9 is docked at the shaft end of the external wheel assembly 2, and the docking connector 9 is rotatably docked with the wheelchair body 1. An adaptive center-of-gravity adjustment mechanism is arranged between the external wheel assembly 2 and the seat assembly 3 to control the overall tilt state of the wheelchair body 1 through the adaptive center-of-gravity adjustment mechanism.

[0019] The adaptive center of gravity adjustment mechanism is provided with a contact switch assembly 7, and the contact switch assembly 7 is docked on the surfaces of the movable guide member 5 and the seat assembly 3. Inside the edge of the wheelchair body 1, a reserved electric push rod 8 is installed, and the reserved electric push rod 8 is electrically connected to the contact switch assembly 7, and the reserved electric push rod 8 is powered by a reserved battery. Inside the edge of the wheelchair body 1, a nested fitting 11 is nested and installed, and the lower end of the nested fitting 11 is docked with a guide connecting member 10. At the same time, magnet members 12 are fixedly connected to the outer sides of the guide connecting member 10 and the docking connecting member 9. The upper end of the nested fitting 11 is adhesively connected with a built-in reserved liquid sac 13, and the built-in reserved liquid sac 13 is arranged inside the edge of the wheelchair body 1. When the reserved electric push rod 8 receives an electrical signal formed by 2 groups of mutually contacting contact switch assemblies 7, it drives its output end to move downward, and the reserved electric push rod 8 disengages from the limiting state with the docking connecting member 9. The docking connecting member 9 forms a rotating state along the inner side of the wheelchair body 1. During the upward rotation of the docking connecting member 9, the contacting guide connecting member 10 is synchronously pressed, and the guide connecting member 10 drives the upper nested fitting 11 to form a position movement synchronously, and the nested fitting 11 forms a pressing state on the contacting built-in reserved liquid sac 13; the overall wheelchair body 1 will effectively maintain its center of gravity state in cooperation with the counterweight assembly 4 that always points vertically downward at the lower end. At the same time, when the user is subjected to external force and tilts or the wheelchair body 1 is skewed during climbing, the seat assembly 3 at the corresponding tilt angle will be resisted by the counterweight assembly 4 with a vertically downward center of gravity state, and the corresponding movable guide member 5 at the contact position will be synchronously pressed, so that the respective contact switch assemblies 7 are in contact. When the reserved electric push rod 8 receives an electrical signal formed by 2 groups of mutually contacting contact switch assemblies 7, it will drive its output end to move downward accordingly, so that the reserved electric push rod 8 disengages from the limiting state with the docking connecting member 9. At this time, the docking connecting member 9 docked with the external wheel assembly 2 will rotate upward correspondingly along the outer side of the wheelchair body 1 according to the skewed state of the wheelchair body 1, so that the skewed wheelchair body 1 forms a reverse support state, and the center of gravity state is changed in cooperation with the counterweight assembly 4 to control and adjust the balance state of the wheelchair body 1 (after the center returns to its original position later, the reserved electric push rod 8 that has disengaged from the electrical signal receiving state of the contact switch assembly 7 can drive its output end to reset upward, so as to perform the vertical support return process of the external wheel assembly 2 along the large-bottom and small-top hole-shaped structure at the end side of the docking connecting member 9), avoiding dangerous situations such as easy tipping. During the reciprocating drive of the overall reserved electric push rod 8, it will perform data recording work through a preset Bluetooth output end. If the number of drives in a single period is too large, a signal transmission and prompt work will be carried out to the mobile phone of the user's family member, so as to prompt the user's family member to go to accompany or observe in time, avoid subsequent adverse effects caused by the overly bumpy road surface of the user's activity, and effectively carry out synchronous intelligent diagnosis and treatment work online and offline.

[0020] Embodiment 2: According toFigures 3 - 10 , on the basis of Embodiment 1, to solve the technical problem that especially when encountering an obstacle in the blind spot of the field of vision, when the tire touches a raised object, the overall wheelchair will tilt at a large angle, and there is a great hidden danger of unstable center of gravity due to the offset of the human body's center of gravity to the side pressure. An active support structure is also disclosed, and its specific structure is as follows: An active support structure is arranged inside the seat assembly 3, and the center of gravity of the occupant is adaptively adjusted through the active support structure; the active support structure is provided with a supply pipe 14, and the supply pipe 14 is arranged inside the built-in reserved liquid bag 13, and the supply pipe 14 runs through along the inside of the wheelchair body 1. An external reserved liquid bag 15 is arranged on the surface layer of the seat assembly 3, and the external reserved liquid bag 15 is connected to the supply pipe 14. The built-in reserved liquid bag 13 forms a synchronous supply operation into the external reserved liquid bag 15 at the end through the supply pipe 14, and the external reserved liquid bag 15 expands to support and prompt the user's buttocks; during the process of the docking connector 9 moving upward under force, its upper end will synchronously press the contacted guiding connector 10, so that the guiding connector 10 drives the nested fitting 11 at the upper end to displace the contacted built-in reserved liquid bag 13 upward, and then the compressed built-in reserved liquid bag 13 forms a synchronous supply operation into the external reserved liquid bag 15 at the end through the supply pipe 14, and the external reserved liquid bag 15 will expand accordingly to support and prompt the user's buttocks along the bottom of the seat assembly 3, so that the user can move timely to the position opposite to the side turning state. Even when encountering an obstacle in the blind spot of the field of vision and the overall wheelchair tilts at a large angle when the tire touches a raised object, the offset of the human body's center of gravity to the side pressure can be avoided.

[0021] Embodiment 3: According to Figure 1 and Figures 10 - 12 , on the basis of Embodiments 1 and 2, another transmission method of the adaptive center of gravity adjustment mechanism is also disclosed, and its specific structure is as follows: The adaptive center of gravity adjustment mechanism is further provided with a first liquid bladder component 16, and the first liquid bladder component 16 is arranged inside the seat assembly 3. A convex structure is arranged on the outside of the movable guide member 5, and the first liquid bladder component 16 corresponds to the outer side position of the movable guide member 5. A supply hose 17 is docked to the inner side of the first liquid bladder component 16, and the supply hose 17 runs through along the inner side of the wheelchair body 1; a limit docking member 19 is nested and installed on the inner side of the edge of the wheelchair body 1, and a spring component docked with the inner side of the wheelchair body 1 is fixedly connected to the upper end of the limit docking member 19. A second liquid bladder component 18 is docked to the outside of the limit docking member 19, and the second liquid bladder component 18 is connected to the supply hose 17. During the outward movement of the movable guide member 5, the first liquid bladder component 16 in contact is pressed, and the first liquid bladder component 16 supplies the second liquid bladder component 18 through the supply hose 17. The second liquid bladder component 18 pushes the outer limit docking member 19 to move downward along the inner side of the wheelchair body 1 until the limit docking member 19 is disengaged from the limit state with the docking connecting member 9; during the outward movement of the movable guide member 5, it will press the first liquid bladder component 16 in contact through the convex component on the outside, and the first liquid bladder component 16 will supply the second liquid bladder component 18 through the supply hose 17, so that the second liquid bladder component 18 pushes the outer limit docking member 19 to move downward along the inner side of the wheelchair body 1 until the limit docking member 19 is disengaged from the limit state with the docking connecting member 9. At this time, the docking connecting member 9 connected to the external wheel assembly 2 will synchronously disengage from the limit state, and then effectively carry out the reverse support work for the rollover state of the external wheel assembly 2. At the same time, after the force-bearing state is released, the docking connecting member 9 will be reset through the docking spring assembly accordingly.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent wheelchair, comprising a wheelchair body (1), an external wheel assembly (2) is installed on the outer side of the wheelchair body (1), and a seat assembly (3) is arranged in the middle of the wheelchair body (1); It is characterized in that: A counterweight assembly (4) is nested and docked at the lower end of the seat assembly (3), and a movable guide (5) is nested and installed on the lower end surface of the seat assembly (3). A return spring (6) is fixedly connected to the outer side of the movable guide (5), and the return spring (6) is docked with the lower end of the seat assembly (3). A docking connector (9) is docked at the shaft end of the external wheel assembly (2), and the docking connector (9) is rotatably docked with the wheelchair body (1). An adaptive center-of-gravity adjustment mechanism is arranged between the external wheel assembly (2) and the seat assembly (3) to control the overall tilting state of the wheelchair body (1) through the adaptive center-of-gravity adjustment mechanism.

2. The intelligent wheelchair according to claim 1, wherein: The adaptive center-of-gravity adjustment mechanism is provided with a contact switch assembly (7), and the contact switch assembly (7) is docked on the surfaces of the movable guide (5) and the seat assembly (3). A reserved electric push rod (8) is installed inside the edge of the wheelchair body (1), and the reserved electric push rod (8) is electrically connected to the contact switch assembly (7), and the reserved electric push rod (8) is powered by a reserved storage battery.

3. The intelligent wheelchair according to claim 2, characterized in that: A nested fitting (11) is nested and installed inside the edge of the wheelchair body (1), and a guide connector (10) is docked at the lower end of the nested fitting (11). At the same time, magnet parts (12) are fixedly connected to the outer sides of the guide connector (10) and the docking connector (9). An internal reserved liquid bag (13) is adhesively connected to the upper end of the nested fitting (11), and the internal reserved liquid bag (13) is arranged inside the edge of the wheelchair body (1).

4. The intelligent wheelchair according to claim 3, characterized in that: When the reserved electric push rod (8) receives an electrical signal formed by 2 groups of mutually contacting contact switch assemblies (7), it drives its output end to move downward, and the reserved electric push rod (8) is disengaged from the limiting state with the docking connector (9), and the docking connector (9) forms a rotating state along the inner side of the wheelchair body (1).

5. The intelligent wheelchair according to claim 4, wherein: During the upward rotation of the docking connector (9), the contacting guide connector (10) is synchronously pressed, and the guide connector (10) drives the upper nested fitting (11) to form a position movement synchronously, and the nested fitting (11) forms a pressing state on the contacting internal reserved liquid bag (13).

6. The intelligent wheelchair according to claim 3, characterized in that: An active support structure is arranged inside the seat assembly (3) to adaptively adjust the center of gravity of the occupant; The active support structure is provided with a supply pipe (14), and the supply pipe (14) is arranged inside the internal reserved liquid bag (13), and the supply pipe (14) penetrates along the inner side of the wheelchair body (1). An external reserved liquid bag (15) is arranged on the surface layer of the seat assembly (3), and the external reserved liquid bag (15) is connected to the supply pipe (14).

7. The intelligent wheelchair according to claim 6, characterized in that: The built-in reserved liquid sac (13) forms a synchronous supply operation through the supply pipe (14) into the external reserved liquid sac (15) at the end, and the external reserved liquid sac (15) expands to support and prompt the user's buttocks.

8. The intelligent wheelchair according to claim 7, wherein: The adaptive center-of-gravity adjustment mechanism is further provided with a first liquid sac component (16), and the first liquid sac component (16) is arranged inside the seat assembly (3). A convex structure is arranged on the outside of the movable guide (5), and the first liquid sac component (16) corresponds to the outer side position of the movable guide (5). A supply hose (17) is docked to the inner side of the first liquid sac component (16), and the supply hose (17) runs through the inside of the wheelchair body (1). A limit docking member (19) is nested and installed on the inner side of the edge of the wheelchair body (1). A spring component docked to the inside of the wheelchair body (1) is fixedly connected to the upper end of the limit docking member (19). A second liquid sac component (18) is docked to the outside of the limit docking member (19), and the second liquid sac component (18) is interconnected with the supply hose (17).

9. The intelligent wheelchair according to claim 8, characterized in that: During the outward movement of the movable guide (5), it presses the contacted first liquid sac component (16), and the first liquid sac component (16) supplies to the inside of the second liquid sac component (18) through the supply hose (17). The second liquid sac component (18) pushes the outer limit docking member (19) to move downward along the inner side of the wheelchair body (1) until the limit docking member (19) disengages from the limit state with the docking connection member (9).

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