Electric chair

Abstract

According to the electric chair, a first hinge rod is fixedly arranged on the front side of a foot pad supporting frame, and the first hinge rod extends into a cushion outer sleeve to be hinged to the front side of a cushion supporting frame; a first connecting rod and a second hinge rod are fixedly arranged at the lower end of the back cushion supporting frame, a connecting frame is fixedly arranged at the tail end of the first connecting rod, and the tail end of the second hinge rod extends into the cushion outer sleeve to be hinged to the rear side of the cushion supporting frame; the driving adjusting assembly comprises a driving motor, a push rod, a pull rod and a second connecting rod, the second connecting rod is fixedly arranged below the first hinge rod, the output end of the push rod is hinged to the connecting frame, one end of the pull rod is hinged to the output end of the push rod and attached to the outer side of the connecting frame, and the other end of the pull rod extends out of the supporting assembly to be hinged to the lower end of the second connecting rod. According to the scheme, the motor drives the push rod to be matched with the pull rod, active adjustment of the angle of the chair back and follow-up adjustment of the foot stool are achieved, user comfort and operation convenience are improved, and the problems of inflexible adjustment and single function in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric chairs, and in particular to an electric chair. Background Art

[0002] An electric chair is a seat with electric functions, which usually uses an electric motor or electric device to achieve the movement, adjustment or change of the seat. This type of chair can be operated by buttons, remote controls or other control devices.

[0003] For example, a Chinese invention patent with the publication number CN222238037U discloses a multifunctional hemodialysis electric chair, including a base and a lifting mechanism, a lifting mechanism is provided on one side of the surface of the base, a seat cushion is installed at one end of the lifting mechanism, a leg rest is attached to one side of the surface of the seat cushion, a chair back is connected to the other end of the seat cushion, a clamping mechanism is provided on one side of the surface of the chair back, an armrest is installed at one end of the chair back, and a rotating mechanism is provided at one end of the chair back. This electric chair based on multifunctional hemodialysis, through the setting of the lifting mechanism, when in use, starts the first cylinder to drive the first connecting plate to move, so that the first driving shaft rotates and lifts up, the first driving shaft drives the third connecting plate and the fourth connecting plate to move, and then the third connecting plate lifts one end of the support frame, the fourth connecting plate rotates and lifts around the auxiliary shaft, drives the fifth connecting plate to move, and finally lifts the support frame.

[0004] The above solution requires the user to apply external force to adjust the chair back angle, which cannot achieve precise control and has a lag in adjustment; the adjustment range is limited and it is difficult to meet the needs of different body shapes or scenarios; passive response may cause angle adjustment lag, affecting the user experience. The leg rest (footrest) is only a fixed support structure and cannot be adjusted in conjunction with the chair back movement, resulting in insufficient leg support in some postures (such as lying down), and poor comfort and convenience. Summary of the invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide an electric chair, which can realize active adjustment of the chair back angle and follow-up adjustment of the footrest through the cooperation of a motor-driven push rod and a pull rod, thereby improving user comfort and operational convenience, and solving the problems of inflexible adjustment and single function in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: An electric chair, characterized in that it comprises a seat cushion assembly, a chair back assembly, a footrest assembly, a drive adjustment assembly and a support assembly; wherein: The seat cushion assembly includes a seat cushion cover, a seat cushion, and a seat cushion support frame fixedly installed between the seat cushion cover and the seat cushion; The tripod assembly includes a tripod and a foot plate fixedly connected to the tripod. The tripod includes a tripod outer sleeve, a foot pad, and a foot pad support frame fixedly installed between the tripod outer sleeve and the foot pad. A first hinge rod is fixedly provided on the front side of the foot pad support frame, and the first hinge rod extends into the seat cushion outer sleeve and is hinged to the front side of the seat cushion support frame. The backrest assembly includes a backrest outer sleeve, a back pad, and a back pad support frame fixedly installed between the backrest outer sleeve and the back pad. A first connecting rod and a second hinge rod are fixedly provided at the lower end of the back pad support frame. A connecting frame is fixedly provided at the end of the first connecting rod. The end of the second hinge rod extends into the seat cushion outer sleeve and is hinged to the rear side of the seat cushion support frame. The support assembly is fixedly supported below the seat cushion assembly. The drive adjustment assembly includes a drive motor, a push rod, a pull rod, and a second connecting rod provided inside the support assembly. The second connecting rod is fixedly provided below the first hinge rod. The output end of the push rod is hinged to the connecting frame. The pull rod is L-shaped. One end of the pull rod is hinged to the output end of the push rod and fits outside the connecting frame. The other end of the pull rod extends out of the support assembly and is hinged to the lower end of the second connecting rod. The drive motor can drive the output end of the push rod to expand and contract, driving the first connecting rod and the pull rod to move, pulling the backrest assembly to rotate relative to the seat cushion assembly along the hinge end with the seat cushion support frame, and at the same time driving the second connecting rod to move, pulling the first hinge rod and the tripod assembly to rotate relative to the seat cushion assembly along the hinge end with the seat cushion support frame.

[0007] Preferably, there are two pull rods, and the two pull rods are symmetrically arranged on both sides of the output end of the push rod and the connecting frame.

[0008] Preferably, the seat cushion outer sleeve and the backrest outer sleeve are spaced apart, and corresponding first assembly openings for the second hinge rod to pass through are provided on the seat cushion outer sleeve and the backrest outer sleeve. The second hinge rod is L-shaped and there are two. The two second hinge rods are symmetrically arranged on both sides of the first connecting rod. Multiple first connecting pieces are formed at the inner lower end of the seat cushion support frame, and the end of the second hinge rod is hinged between the two first connecting pieces.

[0009] Preferably, a first fixing rod is connected to the first connecting rod and the second hinge rods on both sides.

[0010] Preferably, a plurality of first connecting columns are provided circumferentially inside the backrest outer sleeve, the back pad support frame is arranged on the first connecting columns, and corresponding first fixing holes are provided on the back pad support frame, the first connecting columns, and the back pad.

[0011] Preferably, the seat cushion cover and the leg rest cover are arranged at intervals, and second assembly openings for the first hinge rod to pass through are correspondingly formed in the seat cushion cover and the leg rest cover; two first hinge rods are symmetrically provided, and the part of the first hinge rod exposed outside the leg rest cover is arc-shaped. A plurality of second connecting pieces are formed at the lower end of the seat cushion support frame, and the end of the first hinge rod is hinged between the two second connecting pieces; a second fixing rod is provided between the two first hinge rods, the second fixing rod is located between the seat cushion cover and the leg rest cover, and the second connecting rod is fixed to the lower end of the second fixing rod.

[0012] Preferably, the ends of the two first hinge rods extend into the foot pad support frame, and a first reinforcing rod fixedly connected to the two first hinge rods is arranged in the foot pad support frame; a plurality of second connecting columns are circumferentially arranged on the inner periphery of the leg rest cover, the foot pad support frame is arranged on the second connecting columns, and second fixing holes are correspondingly arranged on the foot pad support frame, the connecting columns and the foot pad.

[0013] Preferably, a mounting seat is formed on the leg rest cover, a plurality of assembly grooves are arranged on the mounting seat, a connecting rod is installed on the assembly grooves, a cover plate is fixedly arranged on the mounting seat to press the connecting rod on the mounting seat, and the end of the connecting rod extends out of the leg rest cover and is fixedly connected to the foot plate.

[0014] Preferably, the support assembly includes a support seat supported under the seat cushion cover and a plurality of support columns arranged in the support seat. Upper support plates and lower support plates are respectively fixedly arranged at the upper and lower ends of the plurality of support columns. The upper end of the upper support plate is fixedly connected to the seat cushion cover. The support seat includes two spliced frames, and a plurality of abutting columns abutting against the support columns are convexly arranged on the inner wall of the spliced frame. Second fixing holes are correspondingly arranged on the abutting columns and the support columns; a connecting seat is fixedly arranged at the upper end of the lower support plate, and the lower end of the driving and adjusting assembly is hinged to the connecting seat.

[0015] Preferably, a plurality of second reinforcing rods are connected in the seat cushion support frame, a groove is constructed on the bottom surface of the seat cushion cover, the upper support plate is adaptively installed in the groove, and third fixing holes are correspondingly arranged on the upper support plate, the seat cushion cover, the seat cushion and the second reinforcing rods; a plurality of third connecting columns are circumferentially arranged on the inner periphery of the seat cushion cover, the seat cushion support frame is arranged on the third connecting columns, and fourth fixing holes are correspondingly arranged on the seat cushion support frame, the third connecting columns and the seat cushion.

[0016] The present invention adopts the above technical solutions and has the following beneficial effects: By inserting the first hinge rod on the footrest into the seat cushion outer cover and hinging it with the seat cushion support frame, a rotation fulcrum is formed; the lower end of the backrest support frame is fixed with a first connecting rod and a second hinge rod. A connecting frame is provided at the end of the first connecting rod, and the connecting frame is hinged with the output end of the push rod. The end of the second hinge rod is hinged with the seat cushion support frame, forming another rotation fulcrum; the output end of the push rod is hinged with the connecting frame and one end of the pull rod. The other end of the pull rod is hinged with the lower end of the second connecting rod, and the upper end of the second connecting rod is fixedly connected with the first hinge rod.

[0017] When the output end of the push rod driven by the drive motor shortens, it pulls the first connecting rod, drives the second hinge rod and the backrest to flip backward relative to the seat cushion. At the same time, the shortening of the output end of the push rod drives the rear end of the L-shaped pull rod to pull forward and generate a displacement, thereby causing the front end of the L-shaped pull rod to rotate upward and push the first hinge rod and the footrest to rotate upward relative to the seat cushion, and the electric chair gradually changes to the lying posture state; when the output end of the push rod driven by the drive motor elongates, it pushes the first connecting rod backward, drives the second hinge rod and the backrest to flip forward relative to the seat cushion. At the same time, the elongation of the output end of the push rod drives the rear end of the L-shaped pull rod to pull backward and generate a displacement, thereby causing the front end of the L-shaped pull rod to rotate downward and pull the hinge rod and the footrest to rotate downward relative to the seat cushion, and the electric chair gradually changes to the sitting posture state.

[0018] Therefore, the drive motor drives the push rod to expand and contract, without the user actively applying force, and can drive the backrest to rotate and the footrest to follow at the same time, realizing linkage adjustment, and can achieve real-time and continuous large-range angle adjustment, significantly improving the comfort and functionality of the electric chair. Description of the Drawings

[0019] Figure 1 It is a three-dimensional structural schematic diagram of an electric chair in the lying posture state.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of an electric chair in the sitting posture state after adjustment.

[0021] Figure 3 It is a schematic diagram of the connection structure of the backrest support frame, the seat cushion support frame and the footrest support frame.

[0022] Figure 4 It is an installation schematic diagram of the pull rod.

[0023] Figure 5 It is an assembly schematic diagram of the drive adjustment component and the backrest support frame and the footrest support frame.

[0024] Figure 6 It is an assembly schematic diagram of the seat cushion component and the footrest component.

[0025] Figure 7 It is an assembly schematic diagram of the seat cushion component and the footrest component from another perspective.

[0026] Figure 8 It is an assembly schematic diagram of the backrest assembly and the seat cushion assembly.

[0027] Figure 9 It is an installation schematic diagram of the connecting seat.

[0028] Figure 10 It is an installation schematic diagram of the headrest.

[0029] Figure 11 Schematic diagram of the three-dimensional structure of the assembled frame. Detailed implementation manners

[0030] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more, unless otherwise clearly defined.

[0033] In the present invention, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation", etc. 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, and it can be the communication inside two elements. 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 circumstances.

[0034] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly under and obliquely under the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0035] As Figures 1 to 11 shown, an electric chair includes a seat cushion assembly, a backrest assembly, a footrest assembly, a drive adjustment assembly and a support assembly; wherein, The seat cushion assembly includes a seat cushion outer cover 1, a seat cushion 2, and a seat cushion support frame 3 fixedly installed between the seat cushion outer cover 1 and the seat cushion 2; The footrest assembly includes a footrest 4 and a foot plate 5 fixedly connected to the footrest 4. The footrest 4 includes a footrest outer cover 6, a foot pad 7, and a foot pad support frame 8 fixedly installed between the footrest outer cover 6 and the foot pad 7. A first hinge rod 9 is fixedly provided on the front side of the foot pad support frame 8, and the first hinge rod 9 extends into the seat cushion outer cover 1 and is hinged to the front side of the seat cushion support frame 3; The backrest assembly includes a backrest outer cover 10, a back pad 11, and a back pad support frame 12 fixedly installed between the backrest outer cover 10 and the back pad 11. A first connecting rod 13 and a second hinge rod 14 are fixedly provided at the lower end of the back pad support frame 12. A connecting frame 15 is fixedly provided at the end of the first connecting rod 13, and the end of the second hinge rod 14 extends into the seat cushion outer cover 1 and is hinged to the rear side of the seat cushion support frame 3; The support assembly is fixedly supported under the seat cushion assembly. The drive adjustment assembly includes a drive motor 16, a push rod 17, a pull rod 18 and a second connecting rod 19 arranged inside the support assembly. The second connecting rod 19 is fixedly provided below the first hinge rod 9. The output end of the push rod 17 is hinged to the connecting frame 15. The pull rod 18 is L-shaped. One end of the pull rod 18 is hinged to the output end of the push rod 17 and is attached to the outside of the connecting frame 15, and the other end of the pull rod 18 extends out of the support assembly and is hinged to the lower end of the second connecting rod 19; The drive motor 16 can drive the output end of the push rod 17 to expand and contract to drive the first connecting rod 13 and the pull rod 18 to act, pulling the backrest assembly to rotate relative to the seat cushion assembly along the hinge end with the seat cushion support frame 3, and at the same time driving the second connecting rod 19 to act to pull the first hinge rod 9 and the footrest assembly to rotate relative to the seat cushion assembly along the hinge end with the seat cushion support frame 3.

[0036] In the above technical solution, through the linkage design of the drive motor, push rod, pull rod, first connecting rod and second connecting rod, the synchronous active adjustment of the backrest assembly and the footrest assembly is realized; when adjusting the backrest angle, the drive motor drives the push rod to expand and contract, drives the connecting frame to pull the backrest to rotate, and at the same time drives the footrest assembly to rotate around the hinge end through the pull rod and the second connecting rod, ensuring that the leg support is adaptively matched with the backrest angle, improving the overall comfort and adjustment efficiency, and solving the problems of the fixed and immovable footrest and passive adjustment of the traditional electric chair. Moreover, each support frame is respectively clamped on the inner sides of the seat cushion, backrest and footrest, and the hinge main structure is stable and the adjustment is more reliable.

[0037] Furthermore, there are two pull rods 18, and the two pull rods 18 are symmetrically arranged on both sides of the output end of the push rod 17 and the connecting frame 15. In this technical solution, the two symmetrically arranged pull rods are distributed on both sides of the output end of the push rod, balancing the distribution of the driving force, avoiding mechanism jamming or deformation caused by uneven force on one side, and enhancing the stability of the adjustment process and the structural reliability.

[0038] Furthermore, the seat cushion outer cover 1 and the backrest outer cover 10 are arranged at intervals, and corresponding first assembly openings 20 for the second hinge rod 14 to pass through are formed on the seat cushion outer cover 1 and the backrest outer cover 10. The second hinge rod 14 is L-shaped and there are two, and the two second hinge rods 14 are symmetrically arranged on both sides of the first connecting rod 13. Multiple first connecting pieces 21 are formed at the inner lower end of the seat cushion support frame 3, and the ends of the second hinge rods 14 are hinged between the two first connecting pieces 21. In this technical solution, the L-shaped second hinge rods are symmetrically arranged on both sides of the connecting rod, and cooperate with multiple first connecting pieces inside the seat cushion support frame to form a multi-point hinge support, dispersing the stress concentration during the rotation of the backrest, improving the durability of the hinge structure, and at the same time ensuring the precise control of the rotation trajectory of the backrest.

[0039] Furthermore, first fixing rods 22 are connected to the first connecting rod 13 and the second hinge rods 14 on both sides. In this technical solution, first fixing rods are added between the first connecting rod and the second hinge rods on both sides, further strengthening the connection strength between the backrest support frame and the hinge rods and extending the service life.

[0040] Furthermore, a plurality of first connecting columns 23 are circumferentially arranged on the inner periphery of the backrest outer cover 10, the backrest support frame 12 is erected on the first connecting columns 23, and corresponding first fixing holes 24 are provided on the backrest support frame 12, the first connecting columns 23 and the backrest 11. In this technical solution, the frame-type connection of the plurality of first connecting columns circumferentially arranged on the inner periphery of the backrest outer cover and the backrest support frame, combined with the first fixing hole design, realizes the modular installation and quick disassembly of the backrest, facilitating maintenance or replacement, and at the same time enhancing the load-bearing capacity of the backrest.

[0041] Further, the seat cushion cover 1 and the footrest cover 6 are arranged at intervals, and corresponding second assembly openings 25 for the first hinge rod 9 to pass through are formed in the seat cushion cover 1 and the footrest cover 6; two first hinge rods 9 are symmetrically provided, and the part of the first hinge rod 9 exposed outside the footrest cover 6 is arc-shaped. A plurality of second connecting pieces 26 are formed at the lower end of the seat cushion support frame 3, and the end of the first hinge rod 9 is hinged between two second connecting pieces 26; a second fixing rod 27 is provided between the two first hinge rods 9, the second fixing rod 27 is located between the seat cushion cover 1 and the footrest cover 6, and the second connecting rod 19 is fixed to the lower end of the second fixing rod 27. In this technical solution, the arc-shaped exposed part of the first hinge rod is hinged to the second connecting piece of the seat cushion support frame, and with the transverse connection of the second fixing rod, the rotation path of the footrest assembly is optimized, interference with the seat cushion cover is avoided, and the smoothness of footrest adjustment is ensured; the second connecting rod is fixed to the lower end of the second fixing rod, forming a stable force transmission path and improving the footrest linkage efficiency.

[0042] Further, the ends of the two first hinge rods 9 extend into the foot pad support frame 8, and a first reinforcing rod 28 fixedly connected to the two first hinge rods 9 is arranged in the foot pad support frame 8; a plurality of second connecting columns 29 are circumferentially arranged on the inner periphery of the footrest cover 6, the foot pad support frame 8 is mounted on the second connecting columns 29, and corresponding second fixing holes 30 are provided on the foot pad support frame 8, the connecting columns and the foot pad 7. In this technical solution, the first hinge rod extends into the foot pad support frame and is fixedly connected to the first reinforcing rod, enhancing the torsional stiffness of the footrest assembly; the frame-type fixation of the second connecting column in the footrest cover to the foot pad support frame, combined with the design of the second fixing hole, improves the installation stability and load capacity of the foot pad.

[0043] Further, a mounting seat 31 is formed on the footrest cover 6, a plurality of assembly grooves are provided on the mounting seat 31, a connecting rod 32 is mounted on the assembly grooves, a cover plate 33 is fixedly provided on the mounting seat 31 to press the connecting rod 32 on the mounting seat 31, and the end of the connecting rod 32 extends out of the footrest cover 6 and is fixedly connected to the foot plate 5. In this technical solution, the design of the mounting seat and the connecting rod on the seat cushion cover, and being fixedly pressed by the cover plate, realizes the detachable connection between the foot plate and the seat cushion assembly, facilitating the personalized adjustment of the height or angle of the foot plate, and at the same time ensuring that the connection part is not easy to loosen.

[0044] Further, the support assembly includes a support base supported below the seat cushion outer cover 1, and a plurality of support columns 35 disposed within the support base. Upper and lower support plates 36 and 37 are respectively fixedly provided at the upper and lower ends of the plurality of support columns 35. The upper end of the upper support plate 36 is fixedly connected to the seat cushion outer cover 1. The support base includes two assembled frames 38. A plurality of abutting columns 39 that abut against the support columns 35 are protrudingly provided on the inner wall of the frame 38. Second fixing holes 30 are correspondingly provided on the abutting columns 39 and the support columns 35. A connecting seat 40 is fixedly provided at the upper end of the lower support plate 37. The lower end of the driving and adjusting assembly is hinged to the connecting seat 40. In this technical solution, the frame structure of the support assembly and the design of the abutting columns, through the precise positioning of the second fixing holes and the support columns, improve the assembly accuracy and overall rigidity of the support assembly. The hinged design of the connecting seat optimizes the installation angle of the driving and adjusting assembly, ensuring the high efficiency of the push rod force transmission.

[0045] Further, a plurality of second reinforcing rods 41 are connected and provided within the seat cushion support frame 3. A groove 42 is constructed on the bottom surface of the seat cushion outer cover 1. The upper support plate 36 is adaptively installed within the groove 42. Third fixing holes 44 are correspondingly provided on the upper support plate 36, the seat cushion outer cover 1, the seat cushion 2, and the second reinforcing rods 41. A plurality of third connecting columns 45 are circumferentially provided within the seat cushion outer cover 1. The seat cushion support frame 3 is erected on the third connecting columns 45. Fourth fixing holes 46 are correspondingly provided on the seat cushion support frame 3, the third connecting columns 45, and the seat cushion 2. In this technical solution, the adaptation and installation of the plurality of second reinforcing rods within the seat cushion support frame and the groove of the seat cushion outer cover, combined with the design of the third fixing holes, significantly improve the bending strength of the seat cushion assembly. The frame-type connection between the third connecting columns and the seat cushion support frame further optimizes the load-bearing distribution of the seat cushion, avoiding local deformation.

[0046] It should be noted here that, as Figure 10 shown, the electric chair further includes a headrest 100. A connecting plate 101 protrudes from the lower end of the headrest 100 and penetrates into the backrest outer cover, and is pressed against to prevent detachment by the Figure 9 third reinforcing rod 200 in

[0047] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0048] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. An electric chair, characterized in that: It includes a seat cushion assembly, a backrest assembly, a footrest assembly, a drive adjustment assembly and a support assembly; among them, The seat cushion assembly includes a seat cushion outer cover (1), a seat cushion (2) and a seat cushion support frame (3) fixedly installed between the seat cushion outer cover (1) and the seat cushion (2); The footrest assembly includes a footrest (4) and a foot plate (5) fixedly connected to the footrest (4). The footrest (4) includes a footrest outer cover (6), a foot pad (7) and a foot pad support frame (8) fixedly installed between the footrest outer cover (6) and the foot pad (7). A first hinge rod (9) is fixedly provided on the front side of the foot pad support frame (8), and the first hinge rod (9) extends into the seat cushion outer cover (1) and is hinged to the front side of the seat cushion support frame (3); The backrest assembly includes a backrest outer cover (10), a back pad (11) and a back pad support frame (12) fixedly installed between the backrest outer cover (10) and the back pad (11). A first connecting rod (13) and a second hinge rod (14) are fixedly provided at the lower end of the back pad support frame (12). A connecting frame (15) is fixedly provided at the end of the first connecting rod (13). The end of the second hinge rod (14) extends into the seat cushion outer cover (1) and is hinged to the rear side of the seat cushion support frame (3); The support assembly is fixedly supported under the seat cushion assembly. The drive adjustment assembly includes a drive motor (16), a push rod (17), a pull rod (18) and a second connecting rod (19) arranged inside the support assembly. The second connecting rod (19) is fixedly provided below the first hinge rod (9). The output end of the push rod (17) is hinged to the connecting frame (15). The pull rod (18) is L-shaped. One end of the pull rod (18) is hinged to the output end of the push rod (17) and fits outside the connecting frame (15). The other end of the pull rod (18) extends out of the support assembly and is hinged to the lower end of the second connecting rod (19); The drive motor (16) can drive the output end of the push rod (17) to stretch and drive the first connecting rod (13) and the pull rod (18) to act, pulling the backrest assembly to rotate relative to the seat cushion assembly along the hinge end with the seat cushion support frame (3), and at the same time driving the second connecting rod (19) to act to pull the first hinge rod (9) and the footrest assembly to rotate relative to the seat cushion assembly along the hinge end with the seat cushion support frame (3).

2. The electric chair according to claim 1, characterized in that: There are two pull rods (18), and the two pull rods (18) are symmetrically arranged on both sides of the output end of the push rod (17) and the connecting frame (15).

3. An electric chair according to claim 1, characterized in that: The seat cushion outer cover (1) and the backrest outer cover (10) are arranged at intervals, and first assembly openings (20) for the second hinge rod (14) to pass through are correspondingly provided on the seat cushion outer cover (1) and the backrest outer cover (10). The second hinge rod (14) is L-shaped and there are two. The two second hinge rods (14) are symmetrically arranged on both sides of the first connecting rod (13). Multiple first connecting pieces (21) are formed at the inner lower end of the seat cushion support frame (3), and the end of the second hinge rod (14) is hinged between the two first connecting pieces (21).

4. An electric chair according to claim 3, characterized in that: First fixing rods (22) are connected to the first connecting rod (13) and the second hinge rods (14) on both sides.

5. An electric chair according to claim 3, characterized in that: A plurality of first connecting columns (23) are circumferentially arranged inside the backrest outer cover (10). The backrest support frame (12) is mounted on the first connecting columns (23). Corresponding first fixing holes (24) are provided on the backrest support frame (12), the first connecting columns (23) and the backrest (11).

6. An electric chair according to claim 1, characterized in that: The seat cushion outer cover (1) and the footrest outer cover (6) are arranged at intervals. Corresponding second assembly openings (25) for the first hinge rod (9) to pass through are formed on the seat cushion outer cover (1) and the footrest outer cover (6). Two first hinge rods (9) are symmetrically provided. The part of the first hinge rod (9) exposed outside the footrest outer cover (6) is arc-shaped. A plurality of second connecting pieces (26) are formed at the lower end of the seat cushion support frame (3). The end of the first hinge rod (9) is hinged between two second connecting pieces (26). A second fixing rod (27) is provided between the two first hinge rods (9). The second fixing rod (27) is located between the seat cushion outer cover (1) and the footrest outer cover (6). The second connecting rod (19) is fixed to the lower end of the second fixing rod (27).

7. An electric chair according to claim 6, characterized in that: The ends of the two first hinge rods (9) extend into the foot pad support frame (8). A first reinforcing rod (28) fixedly connected to the two first hinge rods (9) is provided inside the foot pad support frame (8). A plurality of second connecting columns (29) are circumferentially arranged inside the footrest outer cover (6). The foot pad support frame (8) is mounted on the second connecting columns (29). Corresponding second fixing holes (30) are provided on the foot pad support frame (8), the connecting columns and the foot pad (7).

8. An electric chair according to claim 7, characterized in that: An installation seat (31) is formed on the footrest outer cover (6). A plurality of assembly grooves are provided on the installation seat (31). A connecting rod (32) is installed on the assembly grooves. A cover plate (33) is fixedly provided on the installation seat (31) to press the connecting rod (32) on the installation seat (31). The end of the connecting rod (32) extends out of the footrest outer cover (6) and is fixedly connected to the foot plate (5).

9. An electric chair according to claim 1, characterized in that: The support assembly includes a support seat supported below the seat cushion outer cover (1) and a plurality of support columns (35) arranged inside the support seat. Upper support plates (36) and lower support plates (37) are respectively fixedly provided at the upper and lower ends of the plurality of support columns (35). The upper end of the upper support plate (36) is fixedly connected to the seat cushion outer cover (1). The support seat includes two assembled frames (38). A plurality of abutting columns (39) abutting against the support columns (35) are protrudingly provided on the inner wall of the frame (38). Corresponding second fixing holes (30) are provided on the abutting columns (39) and the support columns (35). A connecting seat (40) is fixedly provided at the upper end of the lower support plate (37). The lower end of the driving and adjusting assembly is hinged to the connecting seat (40).

10. An electric chair according to claim 9, characterized in that: A plurality of second reinforcing rods (41) are connected and arranged inside the seat cushion support frame (3). A groove (42) is formed on the bottom surface of the seat cushion outer cover (1). The upper support plate (36) is adaptively installed in the groove (42). Corresponding third fixing holes (44) are provided on the upper support plate (36), the seat cushion outer cover (1), the seat cushion (2), and the second reinforcing rods (41). A plurality of third connecting columns (45) are circumferentially arranged inside the seat cushion outer cover (1). The seat cushion support frame (3) is erected on the third connecting columns (45). Corresponding fourth fixing holes (46) are provided on the seat cushion support frame (3), the third connecting columns (45), and the seat cushion (2).

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