Electric chair with adjustable chair back angle

Abstract

The utility model relates to an electric chair with an adjustable chair back angle. The electric chair comprises a cushion assembly, a chair back assembly, a driving adjusting assembly and a supporting assembly, the chair back assembly comprises a chair back outer sleeve, a back cushion and a back cushion supporting frame fixedly mounted between the chair back outer sleeve and the back cushion, a connecting rod and a hinge rod are fixedly arranged at the lower end of the back cushion supporting frame, and a connecting frame is fixedly arranged at the tail end of the connecting rod; the seat cushion assembly comprises a seat cushion outer sleeve, a seat cushion and a seat cushion supporting frame fixedly installed between the seat cushion outer sleeve and the seat cushion, and the tail end of the hinge rod extends into the seat cushion outer sleeve to be hinged to the seat cushion supporting frame; the supporting assembly is fixedly supported below the cushion assembly, the driving adjusting assembly comprises a driving motor and a push rod which are arranged on the inner side of the supporting assembly, and the output end of the push rod is hinged to the connecting frame, according to the scheme, the angle of the chair back is actively driven through the motor and the push rod, a user does not need to depend on body weight or external force, more convenience is achieved, and the adjusting precision is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric chair technical field especially relates to a chair back angle adjustable electric chair. BACKGROUND

[0002] Electric chair is a kind of seat with electric function, usually uses electric motor or electric device to realize the movement, adjustment or transformation function of seat, and this kind of chair can be operated by button, remote controller or other control device.

[0003] A kind of multifunctional hemodialysis electric chair is disclosed in a Chinese utility model patent with publication number CN222238037U, including base and lifting mechanism, the surface one side of the base is provided with lifting mechanism, the one end of the lifting mechanism is installed with cushion, the surface one side of the cushion is attached with leg support, the other end of the cushion is connected with chair back, the surface one side of the chair back is provided with clamping mechanism, the one end of the chair back is installed with armrest, the one end of the chair back is provided with rotating mechanism. The electric chair based on multifunctional hemodialysis, by the setting of lifting mechanism, when using, start first air cylinder, drive first connecting plate to move, so that first driving shaft rotates and jacks up, first driving shaft drives third connecting plate and fourth connecting plate to move, and then third connecting plate jacks up one end of support frame, fourth connecting plate rotates around power-assisted shaft and jacks up, drive fifth connecting plate to move, finally jacks up support frame.

[0004] In the above-mentioned scheme, the chair back rotating mechanism triggers the cylinder in response to the gravity of the patient when lying down, achieving the change of the chair back angle. However, this passive adjustment method has the following defects: the chair back angle adjustment requires external force applied by the user, and precise control cannot be achieved; the adjustment range is limited, and it is difficult to meet the needs of different body types or scenarios; passive response may cause angle adjustment lag, affecting the user experience. SUMMARY

[0005] To solve the above problems, the utility model aims at providing a chair back angle adjustable electric chair, which realizes electric and precise adjustment of the chair back angle through the cooperation of the drive motor and the push rod, improving user comfort and operation convenience.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] A chair back angle adjustable electric chair, characterized by: including cushion assembly, chair back assembly, drive adjustment assembly and support assembly.

[0008] The chair back assembly comprises a chair back cover, a back cushion, and a back cushion support frame fixedly installed between the chair back cover and the back cushion, the lower end of the back cushion support frame is fixedly provided with a connecting rod and a hinged rod, and the end of the connecting rod is fixedly provided with a connecting frame; the seat cushion assembly comprises a seat cushion cover, a seat cushion, and a seat cushion support frame fixedly installed between the seat cushion cover and the seat cushion, and the end of the hinged rod extends into the seat cushion cover and is hinged to the seat cushion support frame.

[0009] The support assembly is fixedly supported below the seat cushion assembly, the drive adjusting assembly comprises a drive motor and a push rod arranged inside the support assembly, the output end of the push rod is hinged to the connecting frame, and the drive motor can drive the output end of the push rod to extend or retract to drive the connecting rod to act, thereby pulling the chair back assembly to rotate along the hinged end of the seat cushion support frame relative to the seat cushion assembly.

[0010] As preferred, the seat cushion cover and the chair back cover are arranged in a spaced manner, and assembly openings are correspondingly formed on the seat cushion cover and the chair back cover for the hinged rods to pass through, the hinged rods are L-shaped and two hinged rods are arranged symmetrically on both sides of the connecting rod, the inner side of the lower end of the seat cushion support frame is formed with multiple connecting pieces, and the ends of the hinged rods are hinged between two connecting pieces.

[0011] As preferred, the connecting rod and the two hinged rods are connected with a fixed rod.

[0012] As preferred, multiple connecting columns are circumferentially arranged in the chair back cover, the back cushion support frame is arranged on the connecting columns, and first fixing holes are correspondingly arranged on the back cushion support frame, the connecting columns, and the back cushion.

[0013] As preferred, a reinforcing rod is connected in the back cushion support frame.

[0014] As preferred, the support assembly comprises a support frame supported below the seat cushion cover, and multiple support columns arranged in the support frame, the upper and lower ends of the multiple support columns are fixedly provided with an upper support plate and a lower support plate, the upper end of the upper support plate is fixedly connected with the seat cushion cover, and the support frame comprises two split frames spliced together, multiple abutting columns are protrusively arranged on the inner wall of the split frame and abut on the support columns, and second fixing holes are correspondingly arranged on the abutting columns and the support columns.

[0015] As preferred, the upper end of the lower support plate is fixedly provided with a connecting seat, and the lower end of the drive adjusting assembly is hinged to the connecting seat.

[0016] The utility model discloses adopt above -mentioned technical scheme, with following beneficial effect: back pad support frame lower end fixed connecting rod and hinged link, connecting rod end is equipped with connecting frame, and connecting frame is hinged with the output end of push rod, and hinged link end is hinged with the seat cushion support frame, and drive motor drives push rod telescoping, and through connecting frame drive chair back assembly rotates around the hinged end of seat cushion support frame, thereby realizing active angle adjustment, can realize real -time, continuous angle adjustment, and need not user active force, and the comfort and functionality have been improved significantly. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the installation schematic drawing of seat cushion assembly, chair back assembly and support assembly.

[0018] Figure 2 It is the schematic drawing of chair back assembly relative Figure 1 Angle adjustment.

[0019] Figure 3 It is the installation schematic drawing of back pad support frame.

[0020] Figure 4 It is the connection schematic drawing of push rod, seat cushion support frame and back pad support frame respectively.

[0021] Figure 5 It is the installation schematic drawing of support column.

[0022] Figure 6 It is the installation schematic drawing of connecting seat.

[0023] Figure 7 It is the three -dimensional structure schematic drawing of spliced frame. DETAILED DESCRIPTION

[0024] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.

[0025] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as the limitation of the utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] like Figures 1-7 An electric chair with an adjustable backrest angle is shown, including a seat cushion assembly, a backrest assembly, a drive adjustment assembly, and a support assembly;

[0030] The chair back assembly includes a chair back cover 1, a back cushion 2, and a back cushion support frame 3 fixedly installed between the chair back cover 1 and the back cushion 2. The lower end of the back cushion support frame 3 is fixedly provided with a connecting rod 4 and a hinge rod 5, and the end of the connecting rod 4 is fixedly provided with a connecting frame 6. The seat cushion assembly includes a seat cushion cover 7, a seat cushion 8, and a seat cushion support frame 9 fixedly installed between the seat cushion cover 7 and the seat cushion 8. The end of the hinge rod 5 extends into the seat cushion cover 7 and is hinged to the seat cushion support frame 9.

[0031] The support assembly is fixedly supported under the seat cushion assembly. The drive adjustment assembly includes a drive motor 10 and a push rod 11 disposed inside the support assembly. The output end of the push rod 11 is hinged to the connecting frame 6. The drive motor 10 can drive the output end of the push rod 11 to extend and retract, thereby causing the connecting rod 4 to move, thereby pulling the backrest assembly to rotate relative to the seat cushion assembly along the hinge end with the seat cushion support frame 9.

[0032] In the above technical solution, the user starts the driving motor 3, the driving motor 3 drives the push rod 4 to extend and retract, the output end of the push rod 4 acts on the connecting frame 5, and the connecting rod and the chair back assembly 2 are pushed to rotate around the hinge point of the hinge rod 6, so that the chair back angle is accurately adjusted. When the push rod 4 is lengthened, the chair back is forwardly reclined; when it is shortened, the chair back is backwardly inclined. The scheme actively drives the chair back angle by the motor and the push rod, the user does not need to rely on body weight or external force, it is more convenient, and the adjustment accuracy is also higher.

[0033] Further, the seat cushion cover 7 and the chair back cover 1 are arranged at intervals, and assembly openings 12 are formed on the seat cushion cover 7 and the chair back cover 1 for the hinge rod 5 to pass through. The hinge rod 5 is L-shaped and has two rods, and the two hinge rods 5 are symmetrically arranged on both sides of the connecting rod 4. The inner side of the lower end of the seat cushion support frame 9 is formed with a plurality of connecting pieces 13, and the ends of the hinge rods 5 are hinged between the two connecting pieces 13. In the technical solution, the symmetrical arrangement of the hinge rod and the connecting frame ensures the stability of the chair back during adjustment.

[0034] Further, the connecting rod 4 and the two side hinge rods 5 are connected and provided with a fixed rod 14. In the technical solution, the fixed rod improves the structural connection strength between the connecting rod and the hinge rod, and improves the stability of the chair back relative to the seat cushion.

[0035] Further, a plurality of connecting columns 15 are arranged on the inner periphery of the chair back cover 1, the back cushion support frame 3 is arranged on the connecting columns 15, and the back cushion support frame 3, the connecting columns 15 and the back cushion 2 are provided with corresponding first fixing holes 16. In the technical solution, the connecting columns are arranged, the back cushion support frame can be arranged on the connecting columns, and the back cushion support frame, the connecting columns and the back cushion are fixed through the first fixing holes, which is easy to install the back cushion support frame, and the back cushion support frame is clamped in the middle, so that the back cushion support frame is more firm in the chair back, and more stable during the relative turning process of the seat cushion.

[0036] Further, the back cushion support frame 3 is connected with a reinforcing rod 17. In the technical solution, the reinforcing rod increases the bending strength of the back cushion support frame to improve the bending strength of the back cushion support frame and avoid structural deformation.

[0037] Further, the support assembly comprises a support frame supported below the cushion cover 7, and a plurality of support columns 18 arranged in the support frame, upper and lower ends of the plurality of support columns 18 are respectively fixed with an upper support plate 19 and a lower support plate 20, the upper end of the upper support plate 19 is fixedly connected with the cushion cover 7, and the support frame comprises two split frames 21 that are split, a plurality of abutting columns 22 are protrusively arranged on the inner wall of the split frame 21 and abut on the support columns 18, and the abutting columns 22 and the support columns 18 are correspondingly provided with second fixing holes 23. In the technical scheme, the support assembly provides stable support for the overall structure, and is used for mounting the driving and adjusting assembly, the overall structure is of a split frame structure, is convenient to disassemble and assemble, and the overall rigidity is enhanced through the fixed connection of the abutting columns and the support columns.

[0038] Further, the upper end of the lower support plate 20 is fixedly provided with a connecting seat 24, and the lower end of the driving and adjusting assembly is hingedly connected to the connecting seat 24. In the technical scheme, when the driving motor drives the push rod to extend or retract, the lower end of the entire driving and adjusting assembly is relatively rotated at a small amplitude about the connecting seat.

[0039] In the specific embodiment, in order to solve the problem that the chair back adjustment in the existing electric chair lacks comfort and precision, the above scheme is that the lower end of the back cushion support frame is fixedly connected with a connecting rod and a hinged rod, the end of the connecting rod is provided with a connecting frame, the connecting frame is hingedly connected with the output end of the push rod, the end of the hinged rod is hingedly connected with the cushion support frame, the driving motor drives the push rod to extend or retract, the chair back assembly is driven by the connecting frame to rotate about the hinged end of the cushion support frame, thereby active angle adjustment is realized, real-time and continuous angle adjustment can be realized, and the user does not need to actively exert force, and the comfort and functionality are significantly improved.

[0040] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a 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 utility model. In the specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above embodiments in the range of the utility model without departing from the principles and purposes of the utility model.

Claims

1. An electric chair with an adjustable backrest angle, characterized in that: Includes seat cushion assembly, backrest assembly, drive adjustment assembly, and support assembly; The chair back assembly includes a chair back cover (1), a back cushion (2), and a back cushion support frame (3) fixedly installed between the chair back cover (1) and the back cushion (2). The lower end of the back cushion support frame (3) is fixedly provided with a connecting rod (4) and a hinge rod (5), and the end of the connecting rod (4) is fixedly provided with a connecting frame (6). The seat cushion assembly includes a seat cushion cover (7), a seat cushion (8), and a seat cushion support frame (9) fixedly installed between the seat cushion cover (7) and the seat cushion (8). The end of the hinge rod (5) extends into the seat cushion cover (7) and is hinged to the seat cushion support frame (9). The support assembly is fixedly supported under the seat cushion assembly. The drive adjustment assembly includes a drive motor (10) and a push rod (11) disposed inside the support assembly. The output end of the push rod (11) is hinged to the connecting frame (6). The drive motor (10) can drive the output end of the push rod (11) to extend and retract, thereby causing the connecting rod (4) to move, thereby pulling the backrest assembly to rotate relative to the seat cushion assembly along the hinge end with the seat cushion support frame (9).

2. The electric chair with an adjustable backrest angle according to claim 1, characterized in that: The seat cover (7) and the back cover (1) are spaced apart, and the seat cover (7) and the back cover (1) are respectively provided with assembly openings (12) for the hinge rod (5) to pass through. The hinge rod (5) is L-shaped and there are two of them. The two hinge rods (5) are symmetrically arranged on both sides of the connecting rod (4). The lower inner side of the seat support frame (9) is formed with multiple connecting pieces (13). The end of the hinge rod (5) is hinged between the two connecting pieces (13).

3. An electric chair with an adjustable backrest angle according to claim 2, characterized in that: The connecting rod (4) is connected to the hinge rods (5) on both sides by a fixing rod (14).

4. An electric chair with an adjustable backrest angle according to claim 1, characterized in that: The backrest cover (1) has multiple connecting posts (15) on its inner circumference. The back cushion support frame (3) is mounted on the connecting posts (15). The back cushion support frame (3), the connecting posts (15) and the back cushion (2) are respectively provided with first fixing holes (16).

5. An electric chair with an adjustable backrest angle according to claim 4, characterized in that: A reinforcing rod (17) is connected inside the back support frame (3).

6. An electric chair with an adjustable backrest angle according to claim 1, characterized in that: The support assembly includes a support frame supported under the seat cover (7) and multiple support columns (18) set in the support frame. The upper and lower ends of the multiple support columns (18) are respectively fixed with an upper support plate (19) and a lower support plate (20). The upper end of the upper support plate (19) is fixedly connected to the seat cover (7). The support frame includes two spliced ​​frames (21). Multiple abutting columns (22) protrude from the inner wall of the spliced ​​frame (21) and abut against the support columns (18). The abutting columns (22) and the support columns (18) are respectively provided with second fixing holes (23).

7. An electric chair with an adjustable backrest angle according to claim 6, characterized in that: The upper end of the lower support plate (20) is fixedly provided with a connecting seat (24), and the lower end of the drive adjustment component is hinged to the connecting seat (24).

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