Seat lifting mechanism and old people chair iron stand

Abstract

The utility model discloses a seat lifting mechanism and an iron stand of a chair for old people, comprising: a first frame, the center of which is provided with a first space; the second frame is rotationally connected with the first frame; a support part assembled with the second frame; one end of the driving part is hinged to the rear end of the second frame, and the other end is hinged to the rear end of the first frame; when the first frame is in the unlifted state, the second frame is located in the first space, a second space is formed between the front end of the second frame and the front end of the first frame, and the supporting part is located in the second space. And the supporting part is driven by the driving piece to abut against the ground, so that the first frame is integrally lifted upwards in an inclined mode, and the device has the advantages of being flexible in inclination angle adjustment, stable in lifting and inclination process, zero in gravity effect, easy to operate, multifunctional and the like.

Description

Technical Field

[0001] The utility model relates to the technical field related to seats, in particular to a seat lifting mechanism and an iron frame of an elderly chair. Background Art

[0002] In existing elderly care and rehabilitation equipment, the comfort, safety and functionality of seats have always been the focus of attention. With the development of technology, more and more innovative designs have been introduced into elderly seats to provide a more comfortable and safer use experience. Among them, the design of driving the rotating frame by an electric push rod device to lift obliquely has become an effective means to achieve the zero-gravity effect of the seat and improve comfort.

[0003] However, the existing seat lifting device occupies more space at the bottom of the seat, which leads to an increase in the volume of the bottom of the seat, thereby increasing the overall volume of the seat, affecting the overall aesthetics and practicality of the seat. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art, the utility model provides a seat lifting mechanism and an iron frame for an elderly chair, which can achieve zero-gravity lifting while reducing space occupation.

[0005] The technical solution adopted by the utility model to solve the problem is:

[0006] A seat lifting mechanism comprises: a first frame, a first space is formed in the center of the first frame; a second frame, the second frame is rotatably connected to the first frame; a support portion, the support portion is assembled with the second frame; a driving member, one end of the driving member is hinged to the rear end of the second frame, and the other end is hinged 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 is formed between the front end of the second frame and the front end of the first frame, the support portion is located in the second space, and when the unlifted state is converted to the lifted state, the driving member drives the front end of the second frame to rotate toward the ground relative to the front end of the first frame, and the support portion abuts against the ground, so that the first frame is tilted relative to the ground.

[0007] By adopting the above solution, by rotating the second frame in the first space, the problem of occupying extra space at the bottom of the seat can be avoided. As the driving member drives the support part to come into contact with the ground, the first frame as a whole is lifted obliquely upward, which has the advantages of flexible tilt angle adjustment, smooth lifting and tilting process, zero gravity effect, easy operation and versatility.

[0008] Furthermore, a portion of the second frame that is rotatably connected to the first frame is provided with a rotation hole, and a distance from the rotation hole to the front end of the second frame is greater than a distance from the rotation hole to the rear end of the second frame.

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

[0010] Furthermore, the rotation angle range between the first frame and the second frame is 0°-30°.

[0011] By adopting the above solution, within this angle range, the seat can reach a more comfortable tilt angle, which helps the elderly to maintain a comfortable posture when getting up or resting.

[0012] Furthermore, the rear end of the first frame is provided with a first hinged member hinged to the rear end of the driving member, and the rear end of the second frame is provided with a second hinged member hinged to the front end of the driving member, and the height of the first hinged member is smaller than the height of the second hinged member, so that the front end of the driving member is higher than the rear end of the driving member.

[0013] By adopting the above solution, the driving member can form a lever effect when 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] Furthermore, the number of the support parts is more than two, and each of the support parts is hinged with a roller.

[0015] By adopting the above solution, more than two support parts increase the stability and supporting force of the seat during the lifting process, ensuring that the seat can be placed stably on the ground when tilted; the rollers enable the support parts to slide smoothly when contacting the ground, reducing friction with the ground, thereby reducing the noise and resistance that may be generated during the lifting process, and further helping to achieve a zero-gravity effect.

[0016] Furthermore, it also includes a seat support body, which is assembled on the first frame and is used to support and connect the iron frame part of the seat.

[0017] By adopting the above solution, the connection stability of the seat can be improved.

[0018] An iron frame of an elderly chair comprises a backrest assembly, a leg assembly, a linkage assembly, a first drive motor, a second drive motor and a seat lifting mechanism, wherein the linkage assembly is hinged on a seat supporting body of the first frame, and the linkage assembly is hinged to the backrest assembly and the leg assembly respectively, the first drive motor is used to drive the leg assembly to contract or extend, and the second drive motor is used to drive the backrest assembly to contract or extend, so that the iron frame of the elderly chair can switch between a sitting posture, a TV posture, a standing posture and a lying posture.

[0019] By adopting the above solution, it can be linked with two drive motors and controlled individually when needed to achieve more personalized adjustment. At the same time, it also has the function of zero-gravity lifting of the seat, which greatly improves the quality of life of the elderly.

[0020] Furthermore, the linkage assembly includes: an iron frame main board, which is rotatably connected to the seat support body; a leg connecting rod group, which includes a leg synchronization rod, a movable connecting rod and a driving connecting rod, one end of the movable connecting rod is hinged to the leg synchronization rod, and the other end is hinged to the iron frame main board, one end of the driving connecting rod is hinged to the leg assembly, and the other end is hinged to the movable connecting rod; a back synchronization rod, which is connected to the backrest assembly.

[0021] By adopting the above solution, the design of the linkage assembly enables the movement of the leg assembly and the backrest assembly to be coordinated, thereby ensuring the stability and comfort of the elderly when switching between sitting, TV and lying positions. The entire linkage assembly has a simple and compact structure and is easy to manufacture and maintain.

[0022] Furthermore, the backrest assembly includes: a backrest main board, which is hinged to the rear end of the iron frame main board; a backrest driving rod, one end of which is connected to the back synchronization rod and the other end is hinged to the backrest main board.

[0023] By adopting the above solution, the backrest main board and the iron frame main board are connected in a hinged manner, which ensures the stability and reliability of the backrest assembly when adjusting the angle. The design of the backrest drive rod makes the movement of the backrest main board more stable and smooth, avoiding jamming or jittering during the adjustment process. Combined with the design of two drive motors and linkage components, the entire iron frame of the elderly chair can achieve flexible switching from sitting to lying position, meeting the needs of the elderly in different occasions.

[0024] Furthermore, the leg assembly includes: a leg telescopic link, which is hinged to the front end of the iron frame mainboard; a footrest, which is hinged to the leg telescopic link; and a footrest link group, one end of which is hinged to the footrest and the other end is hinged to the leg telescopic link.

[0025] By adopting the above solution, through the cooperation of the leg telescopic link and the footrest link group, the leg assembly can flexibly adjust the leg support height and angle of the elderly to meet the needs of different sitting or lying positions. The design of the footrest provides comfortable support for the elderly's feet and avoids discomfort caused by long-term suspension or improper support.

[0026] In summary, the seat lifting mechanism and the iron frame of the elderly chair provided by the utility model have the following technical effects:

[0027] 1. By rotating the second frame in the first space inside the first frame, the extra 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. The second frame can be flexibly rotated relative to the first frame by the driving member, so as to adjust the inclination angle of the seat to meet the needs of users in different postures;

[0029] 3. The seat lifting mechanism can achieve a zero-gravity effect, allowing users to feel more comfortable and relaxing support when switching between sitting, TV and lying positions, which helps relieve body fatigue. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of a non-elevated three-dimensional structure of an embodiment of the utility model;

[0031] Figure 2 This is a schematic diagram of the lifting structure of an embodiment of the utility model;

[0032] Figure 3 This is a schematic diagram of the sitting posture structure of the elderly chair according to an embodiment of the utility model;

[0033] Figure 4 This is a schematic diagram of the lifting structure of the elderly chair sitting posture according to an embodiment of the utility model;

[0034] Figure 5 It is a schematic diagram showing the lifting structure of the TV posture chair for the elderly according to an embodiment of the utility model;

[0035] Figure 6 This is a schematic diagram of the lifting structure of the elderly chair lying posture according to an embodiment of the utility model;

[0036] Figure 7 It is a schematic diagram of the three-dimensional structure of the lifting of the TV posture chair for the elderly according to an embodiment of the utility model.

[0037] Among them, the meanings of the accompanying drawings are as follows: 1. first frame; 11. first space; 12. second space; 13. rotating hole; 2. second frame; 3. supporting part; 31. roller; 4. driving part; 5. seat supporting body; 6. backrest assembly; 61. backrest main board; 62. backrest driving rod; 7. leg assembly; 71. leg telescopic connecting rod; 72. footrest connecting rod group; 73. footrest; 8. linkage assembly; 81. iron frame main board; 82. leg connecting rod group; 821. leg synchronization 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 synchronization rod; 9. first driving motor; 10. second driving motor. DETAILED DESCRIPTION

[0038] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all the examples. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] In order to facilitate the understanding of the embodiments of the present utility model, the following will be further explained by taking specific embodiments as examples in conjunction with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present utility model.

[0040] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

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

[0042] Embodiment 1 of the present utility model is referred to Figure 1-Figure 2, discloses a seat lifting mechanism, including a first frame 1, a second frame 2, a support part 3 and a driving member 4, the first support frame and the second support frame are both connected by a plurality of vertically connected support beams, the four support beams of the first frame 1 are centrally enclosed to form a first space 11, the support beams on two opposite sides of the second frame 2 are rotatably connected to 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 member 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 a non-lifted state, the second frame 2 is located in the first space 1 1, 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-lifted state is converted to the lifted state, the driving member 4 extends to drive the front end of the second frame 2 to rotate relative to the front end of the first frame 1 toward the ground, and the support part 3 contacts the ground, so that the first frame 1 is tilted relative to the ground; when the lifted state is converted to the non-lifted state, the driving member 4 contracts 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 and the first frame are in the same plane. By rotating the second frame 2 in the first space 11, the problem of occupying extra space at the bottom of the seat can be avoided. As the driving member 4 drives the support part 3 to contact the ground, the first frame 1 is lifted upward obliquely as a whole, which has the advantages of flexible tilt angle adjustment, smooth lifting and tilting process, zero gravity effect, easy operation and versatility.

[0043] In order to facilitate the rotation between the first frame 1 and the second frame 2, in this embodiment 1, the rear end of the first frame 1 is provided with a first hinged member hinged to the rear end of the driving member 4, and the rear end of the second frame 2 is provided with a second hinged member hinged to the front end of the driving member 4. The height of the first hinged member is less than the height of the second hinged member, so that the front end of the driving member 4 is higher than the rear end of the driving member 4, so that the driving member 4 can form a lever effect when operating. Since the front end of the driving member 4 is higher than the rear end, when the driving member 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 entire lifting process more stable and controllable, ensuring the safety and comfort of the elderly during use.

[0044] The part of the second frame 2 that is rotatably connected to the first frame 1 is provided with a rotation hole 13, and the distance from the rotation hole 13 to the front end of the second frame 2 is greater than the distance from the rotation hole 13 to the rear end of the second frame 2, so that when the driving member 4 drives the second frame 2 to rotate, the front end of the second frame 2 can be more effectively rotated toward the ground relative to the front end of the first frame 1. This rotation method can ensure that the support part 3 is in stable contact with the ground, thereby supporting the entire seat and tilting it 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 a zero-gravity experience, preferably, the number of the support parts 3 is set to be more than two, and each of the support parts 3 is hinged with a roller 31. More than two support parts 3 increase the stability and support force of the seat during the lifting process, ensuring that the seat can be placed stably on the ground when tilted; the roller 31 enables the support part 3 to slide smoothly when it contacts the ground, reducing the friction with the ground, thereby reducing the noise and resistance that may be generated during the lifting process, and is more conducive to achieving a zero-gravity effect.

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

[0047] In some embodiments, a seat support body 5 is further provided at the connection between the first frame 1 and the second frame 2. Optionally, the seat support body 5 is mounted on the first frame 1 to support and connect the iron frame portion of the seat, thereby improving the connection stability of the seat. In this embodiment 1, the seat support body 5 also includes two rotatable linkage rods. When the linkage rods are rotated relative to the first frame 1 in a direction away from the ground, the seat can be in a standing position. This position is a prior art, so it will not be described in detail here.

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

[0049] See also Figure 3-7As shown, the utility model also relates to an iron frame of an elderly chair, including 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, wherein the linkage assembly 8 is hinged on the seat support body 5 of the first frame 1, and the linkage assembly 8 is hinged with the backrest assembly 6 and the leg assembly 7 respectively, the first drive motor 9 is used to drive the leg assembly 7 to contract or extend, and the second drive motor 10 is used to drive the backrest assembly 6 to contract or extend, so that the iron frame of the elderly chair can switch between a sitting posture, a TV posture, a standing posture and a lying posture, and can be linked with two drive motors and controlled separately when necessary to achieve more personalized adjustment, and also has a zero-gravity lifting function for the seat, which greatly improves the quality of life of the elderly. In other embodiments, a standing posture of the iron frame of the elderly chair can also be added.

[0050] Specifically, the linkage assembly 8 includes an iron frame main board 81, a leg connecting rod group 82 and a back synchronization rod 83, and the iron frame main board 81 is rotatably connected to the seat support body 5; the leg connecting rod group 82 includes a leg synchronization rod 821, a movable connecting rod 822 and a driving connecting rod 823, one end of the movable connecting rod 822 is hinged to the leg synchronization rod 821, and the other end is hinged to the iron frame main board 81. Preferably, in this embodiment 1, the movable connecting rod 822 includes a first movable connecting rod 8221, a second movable connecting rod 822 and a third movable connecting rod 8223 that are hinged to each other, the end of the first movable connecting rod 8221 is connected to the leg synchronization rod 821, and the end of the third movable connecting rod 8223 is hinged to the iron frame main board 81. One end of the driving link 823 is hinged to the leg assembly 7, and the other end is hinged to the second movable link 822 of the movable link 822; one end of the driving motor is hinged to the seat support body 5, and the other end is hinged to the leg synchronization rod 821; the backrest assembly 6 includes a backrest main board 61 and a backrest driving rod 62, the backrest main board 61 is hinged to the rear end of the iron frame main board 81, one end of the backrest driving rod 62 is connected to the back synchronization rod 83, and the other end is hinged to the backrest main board 61. One end of the second drive motor 10 is hinged to the first frame 1, and the other end is hinged to the back synchronization rod 83; the leg assembly 7 includes a leg telescopic link 71, a footrest link group 72 and a footrest 73, the leg telescopic link 71 is hinged to the front end of the iron frame main board 81, the footrest 73 is hinged to the leg telescopic link 71, one end of the footrest link group 72 is hinged to the footrest 73, and the other end is hinged to the leg telescopic link 71.

[0051] When the first drive motor 9 drives the leg synchronization rod 821 to move, the leg telescopic link 71 and the footrest link group 72 of the leg assembly 7 can be driven to extend and retract through the linkage of the movable link 822 and the drive link 823, so as to achieve the leg lifting effect of the elderly chair. When the second drive motor 10 drives the back synchronization rod 83 to move, it can drive the backrest drive rod 62 to rotate, thereby driving the backrest main board 61 to rotate to change the backrest angle of the elderly chair. Through the design of the first drive motor 9, the second drive motor 10 and the linkage assembly 8, the movement of the leg assembly 7 and the backrest assembly 6 can be coordinated, thereby ensuring the stability and comfort of the elderly when switching between sitting, TV and lying positions. The entire linkage assembly 8 has a simple and compact structure and is easy to manufacture and maintain.

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

[0053] In summary, the seat lifting mechanism and the iron frame of the elderly chair provided by the utility model have the following technical effects:

[0054] 1. By rotating the second frame 2 in the first space 11 inside the first frame 1, the occupancy of the extra 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;

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

[0056] 3. The seat lifting mechanism can achieve a zero-gravity effect, allowing users to feel more comfortable and relaxing support when switching between sitting, TV and lying positions, which helps relieve body fatigue.

[0057] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A seat lifting mechanism, characterized in that: include: A first frame (1), wherein a first space (11) is formed in the center of the first frame (1); A second frame (2), the second frame (2) being rotatably connected to the first frame (1); A support portion (3), the support portion (3) being assembled with the second frame (2); A driving member (4), one end of the driving member (4) is hinged to the rear end of the second frame (2), and the other end of the driving member (4) is hinged to the rear end of the first frame (1); Wherein, when the first frame (1) is in an unraised 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 portion (3) is located in the second space (12). When the unraised state is converted to the raised state, the driving member (4) drives the front end of the second frame (2) to rotate toward the ground relative to the front end of the first frame (1), and the support portion (3) abuts against the ground, so that the first frame (1) is tilted relative to the ground.

2. A seat lifting mechanism according to claim 1, characterized in that: The portion of the second frame (2) that is rotatably connected to the first frame (1) is provided with a rotation hole (13), and the distance from the rotation hole (13) to the front end of the second frame (2) is greater than the distance from the rotation hole (13) to the rear end of the second frame (2).

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

4. A seat lifting mechanism according to claim 1, characterized in that: The rear end of the first frame (1) is provided with a first hinged member hinged to the rear end of the driving member (4), and the rear end of the second frame (2) is provided with a second hinged member hinged to the front end of the driving member (4), and the height of the first hinged member is smaller than the height of the second hinged 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, characterized in that: The number of the support parts (3) is more than two, and each of the support parts (3) is hingedly connected to a roller (31).

6. A seat lifting mechanism according to claim 1, characterized in that: It also comprises a seat support body (5), which is assembled on the first frame (1) and is used to support and connect the iron frame part of the seat.

7. An iron frame for an elderly chair, characterized in that: The invention comprises 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 as described in any one of claims 1 to 6, wherein the linkage assembly (8) is hinged to the seat supporting body (5) of the first frame (1), and 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 contract or extend, and the second drive motor (10) is used to drive the backrest assembly (6) to contract or extend, so that the iron frame of the elderly chair can switch between a sitting posture, a TV posture, a standing posture and a lying posture.

8. The iron frame of an elderly chair according to claim 7, characterized in that: The linkage component (8) comprises: An iron frame main board (81), wherein the iron frame main board (81) is rotatably connected to the seat support body (5); A leg connecting rod group (82), the leg connecting rod group (82) comprising a leg synchronous rod (821), a movable connecting rod (822) and a driving connecting rod (823), one end of the movable connecting rod (822) being hinged to the leg synchronous rod (821), and the other end being hinged to the iron frame main board (81), one end of the driving connecting rod (823) being hinged to the leg assembly (7), and the other end being hinged to the movable connecting rod (822); A back synchronization rod (83), wherein the back synchronization rod (83) is connected to the backrest assembly (6).

9. The iron frame of an elderly chair according to claim 8, characterized in that: The backrest assembly (6) comprises: A backrest main board (61), wherein the backrest main board (61) is hinged to the rear end of the iron frame main board (81); A backrest driving rod (62), one end of which is connected to the back synchronization rod (83) and the other end of which is hinged to the backrest main board (61).

10. The iron frame of an elderly chair according to claim 8, characterized in that: The leg assembly (7) comprises: A leg telescopic connecting rod (71), wherein the leg telescopic connecting rod (71) is hinged to the front end of the iron frame main board (81); A footrest (73), wherein the footrest (73) is hingedly connected to the leg telescopic connecting rod (71); A footrest connecting rod group (72), one end of which is hinged to the footrest (73) and the other end of which is hinged to the leg telescopic connecting rod (71).

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