Seat lifting mechanism and elderly chair iron frame

Abstract

A seat lifting mechanism and an elderly chair iron frame, wherein the seat lifting mechanism comprises: a first frame (1), a first space (11) being formed in the center thereof; a second frame (2) rotatably connected to the first frame (1); and support portions (3) assembled to the second frame (2); and a driving member (4), one end thereof being hingedly connected to the rear end of the second frame (2), and the other end thereof being hingedly connected to the rear end of the first frame (1). When the first frame (1) is in an unlifted state, the second frame (2) is located in the first space (11), a second space (12) is formed between the front end of the second frame (2) and the front end of the first frame (1), and the support portions (3) are located in the second space (12).

Description

Seat lifting mechanism and iron frame of old people chair TECHNICAL FIELD

[0001] The present application relates to the technical field of seat, in particular to a seat lifting mechanism and an iron frame of an old people chair. BACKGROUND

[0002] In the existing old people nursing and rehabilitation equipment, the comfort, safety and functionality of the seat have always been the focus. With the development of science and technology, more and more innovative designs have been introduced into the old people seat to provide a more comfortable and safer use experience. Among them, the design of driving the rotating square frame to be inclined and lifted by the electric push rod device has become an effective means to realize the zero-gravity effect of the seat and improve the comfort.

[0003] However, the existing seat lifting device occupies a lot of space at the bottom of the seat, which leads to an increase in the volume of the seat bottom, thereby making the overall volume of the seat larger, affecting the overall aesthetics and practicality of the seat. SUMMARY

[0004] In order to overcome at least one of the defects of the prior art described above, the present application provides a seat lifting mechanism and an iron frame of an old people chair. The problem of reducing space occupation can be solved while realizing the zero-gravity lifting.

[0005] The technical scheme adopted by the present application to solve the problem is:

[0006] A seat lifting mechanism, comprising: a first frame, a first space being formed in the center of the first frame; a second frame, the second frame being rotationally connected with the first frame; a support part, the support part being assembled with the second frame; a driving part, one end of the driving part being hingedly connected to the rear end of the second frame, and the other end being hingedly connected to the rear end of the first frame; wherein, when the first frame is in an unlifted state, the second frame is located in the first space, a second space being formed between the front end of the second frame and the front end of the first frame, and the support part being located in the second space, when the unlifted state is converted to a lifted state, the driving part drives the front end of the second frame to rotate relative to the front end of the first frame in the direction of the ground, and the support part is in contact with the ground, so that the first frame is inclined relative to the ground.

[0007] By adopting the above scheme, by rotating the second frame in the first space, the problem of occupying additional space at the bottom of the seat can be avoided, and the support part is in contact with the ground by the driving of the driving part, so that the first frame is inclined and lifted as a whole, having the advantages of flexible inclination angle adjustment, smooth lifting and inclination process, zero-gravity effect, easy operation and multifunctionality.

[0008] In some embodiments, the part of the second frame connected to the first frame is provided with a rotating hole, and the distance from the rotating hole to the front end of the second frame is greater than the distance from the rotating hole to the rear end of the second frame.

[0009] By using the above scheme, when the driving member drives the second frame to rotate, the front end of the second frame can be effectively rotated towards the ground relative to the front end of the first frame. This rotation mode can ensure that the support part is in stable contact with the ground, thereby supporting the entire seat and causing it to tilt relative to the ground.

[0010] In some embodiments, the angle range of the rotation between the first frame and the second frame is 0°-30°.

[0011] By using the above scheme, within this angle range, the seat can reach a more comfortable tilt angle, which helps to maintain a comfortable posture when the elderly get up or rest.

[0012] In some embodiments, the rear end of the first frame is provided with a first hinge connected to the rear end of the driving member, and the rear end of the second frame is provided with a second hinge connected to the front end of the driving member, and the height of the first hinge is less than the height of the second hinge, so that the front end of the driving member is higher than the rear end of the driving member.

[0013] By using the above scheme, the driving member can form a lever effect when it is in operation. Since the front end of the driving member is higher than the rear end, when the driving member is driven, it can more effectively push the second frame to rotate relative to the first frame. The lever effect not only improves the efficiency and stability of the seat lifting, but also makes the entire lifting process more stable and controllable, ensuring the safety and comfort of the elderly during use.

[0014] In some embodiments, the number of support parts is two or more, and each support part is hinged with a roller.

[0015] By using the above scheme, two or more support parts increase the stability and support force of the seat during lifting, ensuring that the seat can be placed stably on the ground when it is tilted. The rollers allow the support parts to slide smoothly when they contact the ground, reducing friction with the ground and thus reducing noise and resistance that may occur during lifting, which is more conducive to achieving the zero-gravity effect.

[0016] In some embodiments, it further includes a seat support body assembled on the first frame for supporting and connecting the iron frame part of the seat.

[0017] By using the above scheme, the connection stability of the seat can be improved.

[0018] An old man chair iron frame, including backrest assembly, leg assembly, linkage assembly, first drive motor, second drive motor and seat lifting mechanism, the linkage assembly is hinged on the seat support body of the first frame, the linkage assembly is hinged with the backrest assembly, the leg assembly respectively, the first drive motor is used to drive the leg assembly to retract or extend, the second drive motor is used to drive the backrest assembly to retract or extend, to make the old man chair iron frame switch between sitting posture, TV posture, standing posture and lying posture.

[0019] By adopting the above scheme, the two drive motors can be linked, and individually controlled when needed, to realize more personalized adjustment, while also having a seat zero-gravity lifting function, greatly improving the life quality of the old man.

[0020] In some embodiments, the linkage assembly comprises: an iron frame main plate rotatably connected with the seat support body; a leg link rod set comprising a leg synchronization rod, a movable link rod and a drive link rod, one end of the movable link rod being hingedly connected with the leg synchronization rod, the other end being hingedly connected with the iron frame main plate, one end of the drive link rod being hingedly connected with the leg assembly, the other end being hingedly connected with the movable link rod; a back synchronization rod connected with the backrest assembly.

[0021] By adopting the above scheme, the design of the linkage assembly ensures the coordination of the movement of the leg assembly and the backrest assembly, thereby ensuring the stability and comfort of the old man when switching between sitting, TV and lying postures, and the entire linkage assembly structure is simple, compact, and easy to manufacture and maintain.

[0022] In some embodiments, the backrest assembly comprises: a backrest main plate hingedly connected to the rear end of the iron frame main plate; a backrest drive rod having one end connected with the back synchronization rod and the other end hingedly connected with the backrest main plate.

[0023] By adopting the above scheme, the backrest main plate and the iron frame main plate are connected in a hinged manner, ensuring the stability and reliability of the backrest assembly when adjusting the angle, and the design of the backrest drive rod makes the movement of the backrest main plate more stable and smooth, avoiding the situation of jamming or shaking during adjustment. Combined with the design of the two drive motors and the linkage assembly, the entire old man chair iron frame can realize flexible switching from sitting to lying, meeting the needs of the old man in different occasions.

[0024] In some embodiments, the leg assembly comprises: a leg telescopic link rod hingedly connected to the front end of the iron frame main plate; a footrest hingedly connected with the leg telescopic link rod; a footrest link rod set having one end hingedly connected with the footrest and the other end hingedly connected with the leg telescopic link rod.

[0025] By adopting the above scheme, through the cooperation of the leg telescopic connecting rod and the foot rest connecting rod group, the leg assembly can flexibly adjust the leg support height and angle of the old people, meet the needs in different sitting or lying postures, and the design of the foot rest provides comfortable support for the feet of the old people, avoiding discomfort caused by long-time suspension or improper support.

[0026] In summary, the seat lifting mechanism and the old people's chair iron frame provided by the application have the following technical effects:

[0027] 1. By rotating the second frame in the first space inside the first frame, the additional space at the bottom of the seat is avoided, thereby reducing the overall volume of the seat and improving the practicality and aesthetics of the seat;

[0028] 2. Through the driving of the driving member, the second frame can be flexibly rotated relative to the first frame, thereby adjusting the inclination angle of the seat and meeting the needs of users in different postures;

[0029] 3. The seat lifting mechanism can realize the zero-gravity effect, so that the user can feel more comfortable and relaxed support when switching between the sitting posture, TV posture and lying posture, which helps to relieve body fatigue. BRIEF DESCRIPTION OF DRAWINGS

[0030] FIG. 1 is a perspective view of the unlifted structure of the embodiment of the application;

[0031] FIG. 2 is a schematic view of the lifting structure of the embodiment of the application;

[0032] FIG. 3 is a schematic view of the sitting posture structure of the old people's chair of the embodiment of the application;

[0033] FIG. 4 is a schematic view of the lifting structure of the sitting posture of the old people's chair of the embodiment of the application;

[0034] FIG. 5 is a schematic view of the lifting structure of the TV posture of the old people's chair of the embodiment of the application;

[0035] FIG. 6 is a schematic view of the lifting structure of the lying posture of the old people's chair of the embodiment of the application;

[0036] FIG. 7 is a schematic view of the lifting structure of the TV posture of the old people's chair of the embodiment of the application.

[0037] Wherein, the reference signs have the following meanings: 1, first frame; 11, first space; 12, second space; 13, rotating hole; 2, second frame; 3, support part; 31, roller; 4, driving piece; 5, seat support body; 6, backrest assembly; 61, backrest main plate; 62, backrest driving rod; 7, leg assembly; 71, leg telescopic connecting rod; 72, footrest piece connecting rod group; 73, footrest piece; 8, linkage assembly; 81, iron stand main plate; 82, leg connecting rod group; 821, leg synchronous rod; 822, movable connecting rod; 8221, first movable connecting rod; 8222, first movable connecting rod; 8223, third movable connecting rod; 823, driving connecting rod; 83, back synchronous rod; 9, first driving motor; 10, second driving motor. Embodiments of the present application

[0038] For better understanding and implementation, the technical solutions in the embodiments of the present application will be described and discussed in detail below in conjunction with the drawings of the present application. Obviously, only some examples of the present application are described here, and all other examples obtained by those skilled in the art based on the embodiments in the present application without creative labor are within the protection scope of the present application.

[0039] For the convenience of understanding the embodiments of the present application, the following will be further explained and described with specific embodiments as examples in conjunction with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present application.

[0040] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing the specific embodiments of the present application, and are not intended to limit the present application.

[0042] Embodiment 1 of the present application, as shown in FIG. 1-2, discloses a seat lifting mechanism, comprising a first frame 1, a second frame 2, a support part 3 and a driving part 4, the first frame 1 and the second frame 2 are both connected by multiple vertical support beams, the first frame 1 has a first space 11 formed by the four support beams in the middle, the two opposite side support beams of the second frame 2 are connected with the two support beams of the first frame 1, the support part 3 is assembled at the front end of the second frame 2, one end of the driving part 4 is hinged to the rear end of the second frame 2, and the other end is hinged to the rear end of the first frame 1; when the first frame 1 is in the non-lifting state, the second frame 2 is located in the first space 11, a second space 12 is formed between the front end of the second frame 2 and the front end of the first frame 1, and the support part 3 is located in the second space 12; when the non-lifting state is converted to the lifting state, the driving part 4 is elongated to drive the front end of the second frame 2 to rotate relative to the front end of the first frame 1 towards the ground, and the support part 3 is in contact with the ground to make the first frame 1 tilt relative to the ground; when the lifting state is converted to the non-lifting state, the driving part 4 is retracted to drive the front end of the second frame 2 to rotate relative to the front end of the first frame 1 away from the ground until the second frame 2 is in the same plane as the first frame. By rotating the second frame 2 in the first space 11, the problem of occupying additional space at the bottom of the seat can be avoided, and the support part 3 is in contact with the ground when the driving part 4 is driven, so that the first frame 1 is lifted upward as a whole, which has the advantages of flexible inclination angle adjustment, smooth lifting and tilting process, zero gravity effect, easy operation and multifunctionality.

[0043] In order to facilitate the rotation between the first frame 1 and the second frame 2, in the present embodiment 1, the rear end of the first frame 1 is provided with a first hinge connected with the rear end of the driving part 4, the rear end of the second frame 2 is provided with a second hinge connected with the front end of the driving part 4, and the height of the first hinge is less than the height of the second hinge, so that the front end of the driving part 4 is higher than the rear end of the driving part 4, and a lever effect can be formed when the driving part 4 is in operation. Because the front end of the driving part 4 is higher than the rear end, when the driving part 4 is driven, it can more effectively push the second frame 2 to rotate relative to the first frame 1; the lever effect not only improves the efficiency and stability of the seat lifting, but also makes the whole lifting process more stable and controllable, ensuring the safety and comfort of the elderly during use.

[0044] The part of the second frame 2 connected with the first frame 1 is provided with a rotating hole 13, the distance from the rotating hole 13 to the front end of the second frame 2 is greater than the distance from the rotating hole 13 to the rear end of the second frame 2, so that when the driving part 4 drives the second frame 2 to rotate, the front end of the second frame 2 can be more effectively rotated relative to the front end of the first frame 1 towards the ground. This rotating mode can ensure that the support part 3 is in stable contact with the ground, thereby supporting the entire seat to be inclined relative to the ground.

[0045] In order to make the rotation between the first frame 1 and the second frame 2 more stable and smooth, and achieve zero-gravity experience, preferably, the number of the support parts 3 is two or more, and each support part 3 is hinged with a roller 31. Two or more support parts 3 increase the stability and support force of the seat during lifting, ensuring that the seat can be placed smoothly on the ground when inclined; the roller 31 enables the support part 3 to slide smoothly when contacting the ground, reducing friction with the ground, thereby reducing noise and resistance that may be generated during lifting, and more helping to achieve the zero-gravity effect.

[0046] The angle range of the rotation between the first frame 1 and the second frame 2 is 0°-30°. Most preferably, the maximum angle of the rotation between the first frame 1 and the second frame 2 is 18°, and within this angle range, especially at 18°, the seat can reach a more comfortable inclination angle, which helps to maintain a comfortable posture when getting up or resting for the elderly.

[0047] In some embodiments, the connection between the first frame 1 and the second frame 2 also clamps a seat support body 5, which is optionally assembled on the first frame 1 for supporting and connecting the iron frame part of the seat, which can improve the connection stability of the seat. In this embodiment 1, the seat support body 5 also includes two rotatable linkage rods, which can realize the standing posture of the seat when the linkage rods are rotated relative to the first frame 1 away from the ground. This posture is a prior art, so it will not be described here.

[0048] It should be noted that in this embodiment 1, the driving part 4 is a sliding block motor or a telescopic rod motor.

[0049] Referring to FIGS. 3-7, the application also relates to an old person chair iron frame, comprising a backrest assembly 6, a leg assembly 7, a linkage assembly 8, a first drive motor 9, a second drive motor 10 and a seat lifting mechanism, the linkage assembly 8 is hinged to the seat support body 5 of the first frame 1, the linkage assembly 8 is hinged to the backrest assembly 6 and the leg assembly 7 respectively, the first drive motor 9 is used to drive the leg assembly 7 to retract or extend, the second drive motor 10 is used to drive the backrest assembly 6 to retract or extend, so that the old person chair iron frame can switch between a sitting posture, a TV posture, a standing posture and a lying posture, can be linked with two drive motors, can be controlled individually when needed, to realize more personalized adjustment, and also has a seat zero-gravity lifting function, greatly improving the life quality of the old person. In other embodiments, the standing posture of the old person chair iron frame can also be increased.

[0050] In some embodiments, the linkage assembly 8 comprises an iron frame main plate 81, a leg linkage group 82 and a back synchronization rod 83, the iron frame main plate 81 is rotationally connected with the seat support body 5; the leg linkage group 82 comprises a leg synchronization rod 821, a movable linkage 822 and a drive linkage 823, one end of the movable linkage 822 is hinged to the leg synchronization rod 821, the other end is hinged to the iron frame main plate 81, preferably, in this embodiment 1, the movable linkage 822 comprises a first movable linkage 8221, a second movable linkage 8222 and a third movable linkage 8223 hinged to each other, the end of the first movable linkage 8221 is connected with the leg synchronization rod 821, and the end of the third movable linkage 8223 is hinged to the iron frame main plate 81. One end of the drive linkage 823 is hinged to the leg assembly 7, the other end is hinged to the second movable linkage 822 of the movable linkage 822, one end of the drive motor is hinged to the seat support body 5, the other end is hinged to the leg synchronization rod 821; the backrest assembly 6 comprises a backrest main plate 61 and a backrest drive rod 62, the backrest main plate 61 is hinged to the rear end of the iron frame main plate 81, and the other end of the backrest drive rod 62 is hinged to the backrest main plate 61. One end of the second drive motor 10 is hinged to the first frame 1, the other end is hinged to the back synchronization rod 83; the leg assembly 7 comprises a leg telescopic linkage 71, a footrest linkage group 72 and a footrest 73, the leg telescopic linkage 71 is hinged to the front end of the iron frame main plate 81, the footrest 73 is hinged to the leg telescopic linkage 71, one end of the footrest linkage group 72 is hinged to the footrest 73, the other end is hinged to the leg telescopic linkage 71.

[0051] When the first driving motor 9 drives the leg synchronous rod 821 to move, the leg telescopic rod 71 of the leg assembly 7 and the foot rest rod group 72 can be driven to stretch and retract through the linkage of the movable connecting rod 822 and the driving rod 823, so as to realize the leg lifting effect of the old chair. When the second driving motor 10 drives the back synchronous rod 83 to move, the back driving rod 62 can be driven to rotate, so as to drive the back main plate 61 to rotate and change the angle of the back of the old chair. Through the design of the first driving motor 9, the second driving motor 10 and the linkage assembly 8, the movement of the leg assembly 7 and the back assembly 6 can be kept coordinated, so as to ensure the stability and comfort of the old person when switching between the sitting posture, the TV posture and the lying posture. The whole linkage assembly 8 is simple and compact in structure, and is easy to manufacture and maintain.

[0052] It should be noted that in the embodiment 1, the first driving motor 9 and the second driving motor 10 are slide block motors or telescopic rod motors.

[0053] In summary, the seat lifting mechanism and the old chair iron frame provided by the application have the following technical effects:

[0054] 1. By rotating the second frame 2 in the first space 11 inside the first frame 1, the additional space at the bottom of the seat is avoided, thereby reducing the overall volume of the seat and improving the practicability and aesthetics of the seat;

[0055] 2. Through the driving of the driving part 4, the second frame 2 can be flexibly rotated relative to the first frame 1, so as to adjust the inclination angle of the seat and meet the needs of users in different postures;

[0056] 3. The seat lifting mechanism can realize the zero-gravity effect, so that the user can feel more comfortable and relaxed support when switching between the sitting posture, the TV posture and the lying posture, which helps to relieve body fatigue.

[0057] The technical means disclosed in the application scheme is not limited to the technical means disclosed in the above-mentioned embodiments, but also includes the technical solutions composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the art, without departing from the principles of the application, some improvements and refinements can be made, which are also considered within the protection scope of the application.

Claims

1. A seat lifting mechanism, comprising: a first frame (1) having a first space (11) formed in the center thereof; a second frame (2) rotatably connected to the first frame (1); a support part (3) assembled to the second frame (2); a driving member (4) having one end hinged to the rear end of the second frame (2) and the other end hinged to the rear end of the first frame (1); wherein, when the first frame (1) is in an un-lifting state, the second frame (2) is located in the first space (11), a second space (12) is formed between the front end of the second frame (2) and the front end of the first frame (1), and the support part (3) is located in the second space (12); when the un-lifting state is converted to a lifting state, the driving member (4) drives the front end of the second frame (2) to rotate relative to the front end of the first frame (1) in the direction of the ground, the support part (3) abuts against the ground, so that the first frame (1) is inclined relative to the ground.

2. A seat lifting mechanism according to claim 1 wherein, The part of the second frame (2) rotatably connected to the first frame (1) is provided with a rotating hole (13), the distance from the rotating hole (13) to the front end of the second frame (2) is greater than the distance from the rotating hole (13) to the rear end of the second frame (2).

3. A seat lifting mechanism according to claim 1 wherein, The angle range of rotation between the first frame (1) and the second frame (2) is 0°-30°.

4. A seat lifting mechanism according to claim 1 wherein, The rear end of the first frame (1) is provided with a first hinge member hinged to the rear end of the driving member (4), the rear end of the second frame (2) is provided with a second hinge member hinged to the front end of the driving member (4), the height of the first hinge member is less than the height of the second hinge member, so that the front end of the driving member (4) is higher than the rear end of the driving member (4).

5. A seat lifting mechanism according to claim 1 wherein, The number of the support parts (3) is more than two, each of the support parts (3) is hinged with a roller (31).

6. The seat lifting mechanism according to claim 1, further comprising a seat support body (5) assembled to the first frame (1) for supporting and connecting the iron frame part of a seat.

7. An iron frame for an elderly chair, wherein, comprising a backrest assembly (6), a leg assembly (7), a linkage assembly (8), a first driving motor (9), a second driving motor (10) and the seat lifting mechanism according to any one of claims 1-6, the linkage assembly (8) is hinged to the seat support body (5) of the first frame (1), the linkage assembly (8) is hinged to the backrest assembly (6) and the leg assembly (7) respectively, the first driving motor (9) is used to drive the leg assembly (7) to retract or extend, and the second driving motor (10) is used to drive the backrest assembly (6) to retract or extend, so that the iron frame of the old chair can be switched between a sitting posture, a TV posture, a standing posture and a lying posture.

8. The iron frame for a chair for the elderly according to claim 7, wherein The linkage assembly (8) comprises: an iron frame main plate (81) rotatably connected to the seat support body (5); A leg linkage (82) comprising a leg synchronizing rod (821), a movable linkage (822) and a driving linkage (823), one end of the movable linkage (822) being hinged to the leg synchronizing rod (821), the other end being hinged to the main frame plate (81), one end of the driving linkage (823) being hinged to the leg assembly (7), the other end being hinged to the movable linkage (822); A back synchronizing rod (83) connected to the backrest assembly (6).

9. The iron frame of a chair for the elderly according to claim 8, wherein The backrest assembly (6) comprises: A backrest main plate (61) hinged to the rear end of the main frame plate (81); A backrest driving rod (62) connected to the back synchronizing rod (83) at one end, hinged to the backrest main plate (61) at the other end.

10. The iron frame for a chair for the elderly according to claim 8, wherein The leg assembly (7) comprises: A leg telescopic linkage (71) hinged to the front end of the main frame plate (81); A footrest (73) hinged to the leg telescopic linkage (71); A footrest linkage (72) hinged to the footrest (73) at one end, hinged to the leg telescopic linkage (71) at the other end.

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