Auxiliary multifunctional chair special for old people

Abstract

The invention relates to the field of articles for daily use of old people, and discloses an auxiliary multifunctional chair special for old people, which comprises a seat surface, first fences are fixedly mounted on the left and right sides of the seat surface, rear columns are fixedly mounted on the rear sides of the top ends of the first fences, and the lower sides of the inner side ends of the rear columns are connected to the two ends of a transverse frame through fixing rods. Rotating frames are movably mounted at the four corners of the transverse frame, first cavities are formed in the two sides of the interior of the transverse frame, spring plates are fixedly mounted on the two sides of the interior of each first cavity, and the tail ends of the spring plates extend into the rotating frames on the corresponding sides; and compression rollers are fixedly mounted in the spring plates, and the rear ends of the compression rollers abut against the surfaces of the front ends of the spring plates on the corresponding sides. According to the invention, the waist can be automatically tracked, constant waist support is provided, the support force is individually adjusted, the sitting posture and the body weight of the old are adapted, and the riding comfort, the adaptability and the safety are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of life supplies for the elderly, in particular to a multifunctional chair for the elderly with assistance. BACKGROUND

[0002] With the deepening of population aging, the daily living safety and comfort needs of the elderly group are increasingly concerned. Due to the physiological decline, the muscle strength of the waist of the elderly is weakened, the flexibility of the lumbar spine is decreased, and the problem of suspended waist and insufficient support is easy to occur when sitting on the seat for a long time, which further causes discomfort such as waist swelling and strain, and seriously affects the riding experience and health. At the same time, the elderly have weak balance ability, and the risk of falling backward when sitting on the seat is high, and the traditional seat lacks effective buffer protection mechanism, which is easy to cause falling injury. In addition, the body weight and sitting posture habit of the elderly group are different, and the demand for seat support force is also different, and a special seat that can adapt to different needs and take into account comfort and safety is urgently needed to meet the core use scenarios of the elderly group in daily long sitting and resting.

[0003] At present, the old seats on the market mainly focus on the basic bearing function, and the waist support design has obvious deficiencies: some seats do not set special waist support structure, and only rely on the overall support of the backrest, which cannot accurately fit the waist curve and is easy to appear suspended waist; a few seats with waist support have fixed support points, which cannot dynamically adapt to the change of sitting posture and the adjustment of backward angle, and the support effect is poor and the comfort is insufficient. At the same time, the support force of the existing seat is mostly fixed value, which is difficult to adapt to the old people with different weight and different sitting posture habit, and the universality is poor. In terms of safety protection, the traditional seat lacks buffer brake design to prevent falling backward, and once the seat tilts backward, the old people are easy to directly hit the ground, and some seats with rollers lack deceleration mechanism, which may cause secondary danger due to the acceleration of the roller, and the safety protection performance needs to be improved. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a multifunctional chair for the elderly with assistance, which solves the problems of fixed waist support of traditional old seat, inability to dynamically adapt to the change of sitting posture, and adjustable support force, and overcomes the safety hazards of lack of effective buffer brake when the seat tilts backward, easy to cause falling and secondary injury, and meets the comfortable riding and safety protection needs of the old people with different weight and sitting posture habit.

[0005] In order to achieve the above object, the application is implemented by the following technical scheme: A multifunctional chair for the elderly, comprising a seat surface, first enclosures are fixedly installed on the left and right sides of the seat surface, rear uprights are fixedly installed on the top rear sides of the first enclosures, the inner side ends of the rear uprights are connected to the two ends of a horizontal frame through fixed rods, rotating frames are movably installed at the four corners of the horizontal frame, first cavities are formed in the inner sides of the horizontal frame, spring plates are fixedly installed in the first cavities, the ends of the spring plates extend into the interiors of the rotating frames on the corresponding sides, pressure rollers are fixedly installed in the interiors of the spring plates, the rear ends of the pressure rollers abut against the front end surfaces of the spring plates on the corresponding sides, connecting rods are movably installed at the front ends of the rotating frames, and the ends of the connecting rods are movably installed at the rear end four corners of a waist support.

[0006] Preferably, support legs are fixedly installed at the bottom ends of the two sides of the first enclosures, the bottom ends of the two sides of the support legs are fixedly installed at the top ends of a bottom plate, roller grooves are formed at the bottom rear sides of the bottom plate, and support rollers are movably installed in the interiors of the roller grooves.

[0007] Preferably, backrest cushions are fixedly installed at the upper sides of the inner side ends of the rear uprights, a seat cushion is placed on the upper surface of the seat surface, and handrails are fixedly installed at the top front sides of the first enclosures.

[0008] Preferably, support tables are movably installed in the interiors of the first cavities, the two sides of the support tables abut against the rear end surfaces of the spring plates on the corresponding sides, short shafts are movably installed in the inner side walls of the first cavities, threaded rods are fixedly installed at the outer side ends of the short shafts, and the outer diameters of the threaded rods are threadedly connected to the middle portions of the support tables on the corresponding sides.

[0009] Preferably, a second cavity is formed in the inner middle portion of the horizontal frame, an adjusting knob is movably installed at the rear end of the horizontal frame, the middle portion of the adjusting knob extends into the interior of the second cavity through a movable shaft and is fixedly installed with a driving bevel gear, the inner side ends of the short shafts extend into the interior of the second cavity and are fixedly installed with driven bevel gears, and the inner side ends of the driven bevel gears are meshingly connected with the two sides of the driving bevel gear.

[0010] Preferably, angle plate grooves are formed at the two sides of the bottom rear side of the bottom plate near the roller grooves, support angle plates are movably installed in the interiors of the angle plate grooves through support springs.

[0011] Preferably, second enclosures are fixedly installed on the front and rear sides of the seat surface, a horizontal groove is formed in the interior of the rear side second enclosure, a horizontal shaft is movably installed in the interior of the horizontal groove, and a plurality of coil springs are connected to the inner wall of the horizontal groove through the outer diameter of the horizontal shaft.

[0012] Preferably, the middle part of each supporting roller is fixedly installed with a first transmission wheel, and the two ends of the horizontal shaft are fixedly installed with second transmission wheels.

[0013] The application provides a multifunctional chair for the elderly. 1. The waist support of the application is connected with the rotating frame and the spring plate through a connecting rod, and can automatically fit the waist when the sitting posture of the elderly changes, such as adjustment of the sitting posture and change of the reclining angle, so as to realize "waist-following" support, avoid the problems of traditional seat that the waist is suspended or the support point is fixed, and fit the waist curve of the elderly throughout the process, thereby reducing the muscle strain of the waist. 2. The waist support force can be changed by rotating the adjusting knob, which is simple and easy to understand and has high adaptability: on the one hand, it can be individually adjusted according to the sitting posture habit of the elderly; and on the other hand, it can meet the needs of the elderly with different weights, so that the elderly with different physical conditions can obtain adaptive waist support, thereby expanding the application range of the product. 3. When the seat is accidentally reclined, the support angle plate is pressed into the angle plate groove, the supporting roller contacts the ground and drives the seat to move backward smoothly, thereby avoiding the impact injury caused by the direct fall of the elderly; meanwhile, the damping design of the coil spring and the horizontal shaft converts the rotation of the supporting roller into the tightening of the coil spring through the transmission belt, generates gradually increasing reverse resistance, gradually slows down the backward movement of the seat until it stops, prevents secondary collision caused by accelerated sliding of the roller, significantly improves the safety, and forms an integrated buffer braking system of the supporting roller, the transmission wheel, the horizontal shaft and the coil spring, which can automatically trigger deceleration without additional operation, adapts to the emergency scene of sudden reclining of the elderly, does not need manual control of the elderly, meets the use needs of the elderly group with weak operation ability, and makes the protection more proactive. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a perspective view of the application. Figure 2 It is a structural schematic view of the horizontal frame in the application. Figure 3 It is a perspective view of the application. Figure 2 It is an enlarged view of A in the application. Figure 4 It is a structural schematic view of the second chamber in the application. Figure 5 It is a rear view of the application. Figure 6 It is a rear view of the application. Figure 5 It is an enlarged view of B in the application. Figure 7 Fig. 4 is a schematic view of the internal structure of the transverse slot in the present application.

[0015] Wherein, 1, seat surface; 2, first enclosure; 3, rear column; 4, backrest pad; 5, transverse frame; 6, rotating frame; 7, first chamber; 8, spring plate; 9, compression roller; 10, connecting rod; 11, waist support; 12, short shaft; 13, threaded rod; 14, support table; 15, second chamber; 16, adjusting knob; 17, driving bevel gear; 18, driven bevel gear; 19, support leg; 20, bottom plate; 21, roller groove; 22, support roller; 23, angle plate groove; 24, support spring; 25, support angle plate; 26, first transmission wheel; 27, second enclosure; 28, transverse slot; 29, transverse shaft; 30, second transmission wheel; 31, transmission belt; 32, spring reel; 33, seat cushion; 34, armrest. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0017] Embodiment: Please refer to the accompanying drawings of the present application Figure 1 - the accompanying drawings of the present application Figure 7 The embodiments of the present application provide a kind of auxiliary multifunctional old special chair, such as Figure 1As shown, it comprises a seat surface 1, which is the core bearing component for the daily ride of the elderly user, providing a stable ride basis for the elderly, and the left and right sides of the seat surface 1 are fixedly installed with first enclosures 2, which not only can protect the body of the elderly on both sides to avoid falling to both sides when riding, but also can provide a stable installation carrier for the handrails 34 and the supporting legs 19, and the top end rear side of the first enclosure 2 is fixedly installed with a rear column 3, which extends vertically upward, providing a reliable installation support point for the backrest pad 4, ensuring the stability of the back support, and forming a rigid connection with the cross frame 5 through the fixed rod, strengthening the overall structural strength of the seat, and the inner side end of the rear column 3 is connected to the two ends of the cross frame 5 through the fixed rod, and the cross frame 5 is arranged horizontally below the rear side of the seat as the installation basis of the waist support adjusting structure such as the rotating frame 6, the spring plate 8, and the supporting table 14, and the cavity inside provides a closed installation space for each transmission component, avoiding the influence of dust and debris on the movement precision, and the rotating frame 6 is movably installed at the four corners of the cross frame 5, which can rotate flexibly around the installation point of the cross frame 5, providing a movable stroke for the displacement of the waist support 11, realizing the linkage of the waist support 11 with the change of the sitting posture, and the first cavity 7 is formed at the inside of both sides of the cross frame 5, providing independent installation and movement space for components such as the spring plate 8, the pressure roller 9, and the supporting table 14, ensuring that each component does not interfere with each other when moving, improving the smoothness of the structure linkage, and the spring plate 8 is fixedly installed inside the first cavity 7, and the end of the spring plate 8 extends into the inside of the corresponding side rotating frame 6, and the spring plate 8 has excellent elastic deformation ability, and the connection design of the end and the rotating frame 6 enables the bending movement of the rotating frame 6 to directly drive the spring plate 8 to elastically deform, thereby generating a counter-supporting force to provide an elastic basis for the waist support of the waist support 11, and the pressure roller 9 is fixedly installed inside the spring plate 8, and the rear end of the pressure roller 9 abuts against the front end surface of the corresponding side spring plate 8, and the pressure roller 9 adopts a rollable structure, which can slide along the front end surface of the spring plate 8 during the bending process of the spring plate 8, and through the way of dynamically adjusting the force arm, it compensates the elastic fluctuation of the spring plate 8 due to the change of the bending degree, the front end of the rotating frame 6 is movably installed with a connecting rod 10, which plays a force transmission role, transmits the waist extrusion force received by the waist support 11 to the rotating frame 6, and feeds back the linkage movement of the rotating frame 6 to the waist support 11, realizing the synchronous action of the waist support 11 and the rotating frame 6, and the end of the connecting rod 10 is movably installed at the rear end of the waist support 11, and the waist support 11 is designed to fit the waist curve of the elderly, and through the connection of the four corners and the connecting rod 10, it ensures uniform stress, can fully fit the waist and provide stable support, and avoids local compression.

[0018] In this embodiment, support legs 19 are fixedly installed on both sides of the bottom end of the first enclosure 2. The support legs 19 are made of high-strength material and vertically connect the first enclosure 2 and the base plate 20 to form a stable support structure, ensuring the overall load-bearing capacity and placement stability of the seat. The bottom ends of the support legs 19 are fixedly installed on the top sides of the base plate 20. The base plate 20 is a horizontally arranged load-bearing plate, which not only provides a stable installation benchmark for the support legs 19, but also provides installation space for safety protection components such as support rollers 22 and support corner plates 25. Its overall structural design can distribute the pressure on the seat and improve the stability of the seat. To ensure stability during placement, roller grooves 21 are provided on the rear side of the bottom of the base plate 20. The roller grooves 21 provide storage and movement space for the support rollers 22. Under normal conditions, the support rollers 22 are stored in the grooves, which does not affect the stability of the seat when it is placed normally. They are only exposed and play a role when the seat is tilted back. The support rollers 22 are movably installed inside the roller grooves 21. The support rollers 22 are made of wear-resistant and non-slip material and have good rotation performance. When the seat is tilted back, they contact the ground and drive the seat to move smoothly, avoiding direct falls and impact injuries to the elderly. At the same time, their rotational movement can trigger a deceleration and braking function through the transmission structure.

[0019] Furthermore, the two ends of the backrest cushion 4 are fixedly installed on the upper inner side of the rear column 3. The backrest cushion 4 is made of soft and breathable elastic material, conforms to the physiological curve of the elderly's back, provides comfortable support for the back, reduces back muscle pressure, and improves back comfort when sitting for a long time. A seat cushion 33 is placed on the upper surface of the seat 1. The seat cushion 33 is made of highly elastic and breathable filling material, which can increase the softness of the seat 1, distribute the pressure on the buttocks, avoid buttock soreness caused by prolonged sitting, and at the same time have good breathability, improving the physical comfort when sitting. Armrests 34 are fixedly installed on the top front side of the first enclosure 2. The armrests 34 are designed to conform to the hand gripping habits of the elderly, and the height is adapted to the arm placement position of the elderly when sitting, making it convenient for the elderly to get up and sit down with leverage, while providing hand support during the sitting process, reducing fatigue caused by the arms being suspended in the air, and improving the overall convenience and comfort of sitting.

[0020] Furthermore, each of the first chambers 7 has a movably installed support platform 14, with both sides of the support platform 14 abutting against the rear end surface of the corresponding side spring plate 8. The support platform 14 is a sliding support component, and by abutting against the rear end of the spring plate 8, it becomes the fulcrum when the spring plate 8 bends. Its position change can directly change the bending fulcrum of the spring plate 8, thereby adjusting the elastic force generated when the spring plate 8 deforms. Each of the inner side walls of the first chamber 7 has a movably installed short shaft 12, which can rotate flexibly around its own axis. As an intermediate component for power transmission, it can connect the threaded rod 13 and the driven bevel gear 18 into one unit to achieve synchronous power transmission. Each of the outer ends of the short shaft 12 has a fixedly installed threaded rod 13, and the outer diameter of the threaded rod 13 is threadedly connected to the middle of the corresponding side support platform 14. The threaded rod 13 adopts a threaded transmission structure, and its rotational motion can be converted into the linear motion of the support platform 14. Through the helical action of the thread, the support platform 14 is driven to move smoothly along the inside of the first chamber 7, thereby achieving precise adjustment of the position of the support platform 14.

[0021] Furthermore, a second chamber 15 is provided in the middle of the cross frame 5. The second chamber 15 provides a closed installation and movement space for the driving bevel gear 17 and the driven bevel gear 18, preventing external impurities from interfering with the gear meshing transmission and ensuring the accuracy and smoothness of the transmission. An adjustment knob 16 is movably installed at the rear end of the cross frame 5. The adjustment knob 16 is designed to be easy for the elderly to hold and rotate, and its operation is simple and easy to understand, requiring no complicated skills. The elderly can independently adjust the support force. The middle part of the adjustment knob 16 extends into the interior of the second chamber 15 through a movable shaft and is fixedly installed with the driving bevel gear 17. The driving bevel gear 17 serves as the power input gear and rotates synchronously with the adjustment knob 16, transmitting rotational power through gear meshing. The driven bevel gears 18 on both sides are connected to the driven bevel gears 18 to achieve power distribution. The inner ends of the short shafts 12 extend into the interior of the second chamber 15 and are fixedly installed with the driven bevel gears 18. The driven bevel gears 18 mesh with the driving bevel gears 17, which can convert the rotational power of the driving bevel gears 17 into the rotational motion of themselves and the short shafts 12. The driven bevel gears 18 on both sides rotate synchronously to ensure the rotational consistency of the threaded rods 13 on both sides. The inner ends of the driven bevel gears 18 are respectively connected to the two sides of the driving bevel gears 17. The gear meshing transmission structure has the characteristics of high transmission efficiency and strong stability, which can ensure that the rotational power of the adjustment knob 16 is accurately and synchronously transmitted to the short shafts 12 on both sides to achieve synchronous adjustment of the support platform 14.

[0022] Furthermore, corner plate grooves 23 are provided on both sides of the rear bottom of the base plate 20 near the roller groove 21. The corner plate grooves 23 provide installation and storage space for the support corner plate 25 and the support spring 24, ensuring that the support corner plate 25 can protrude from the bottom of the base plate 20 under normal conditions to achieve stable support, and can be smoothly stored under force without affecting the operation of the support roller 22. The support corner plate 25 is movably installed inside the corner plate groove 23 through the support spring 24. The support spring 24 has good elastic restoring ability. Under normal conditions, it pushes the support corner plate 25 out of the corner plate groove 23, so that the support corner plate 25 contacts the ground, ensuring the stability of the seat when it is placed. When the seat is tilted back, the support corner plate 25 is subjected to the pressure of the ground, compresses the support spring 24 and retracts into the corner plate groove 23, creating conditions for the support roller 22 to contact the ground. After the seat is straightened, the support spring 24 returns to its original position and pushes the support corner plate 25 out again, restoring the stable support state.

[0023] Furthermore, second guardrails 27 are fixedly installed on both the front and rear sides of the seat 1. The second guardrails 27 can protect the front and rear sides of the elderly person's body, preventing forward and backward displacement due to body swaying during sitting, especially preventing the elderly person from leaning forward when getting up or sitting down, thus improving safety during the sitting process. The interior of the rear second guardrail 27 has a horizontal groove 28, which provides installation space for the horizontal shaft 29 and the coil spring 32. Its length is adapted to the horizontal shaft 29, ensuring that the horizontal shaft 29 can rotate flexibly and that the coil spring 32 has sufficient retraction space. The horizontal shaft 29, which is cylindrical, is movably installed inside the horizontal groove 28. The transmission component is rotatable around its own axis. Its two ends are fixedly connected to the second transmission wheel 30, which can transmit the rotational power of the second transmission wheel 30 to the coil spring 32. At the same time, the rotational speed is reduced under the damping action of the coil spring 32. The outer diameter of the horizontal shaft 29 is connected to the inner wall of the horizontal groove 28 by several coil springs 32. The coil spring 32 has elastic contraction characteristics. When the horizontal shaft 29 rotates, it will drive the coil spring 32 to gradually tighten. The tightened coil spring 32 will generate a reverse damping force. As the degree of tightening increases, the damping force gradually increases, providing a continuously increasing resistance to the rotation of the horizontal shaft 29, thus achieving a deceleration effect.

[0024] Furthermore, a first transmission wheel 26 is fixedly installed in the middle of each support roller 22. The first transmission wheel 26 rotates synchronously with the support roller 22 and can transmit the rotational power of the support roller 22 through the transmission belt 31, becoming the starting component for power transmission. A second transmission wheel 30 is fixedly installed at both ends of the horizontal shaft 29. The second transmission wheel 30 is fixedly connected to the horizontal shaft 29 and can convert the power transmitted by the transmission belt 31 into the rotational motion of the horizontal shaft 29, realizing the transmission of power from the support roller 22 to the horizontal shaft 29. The outer diameters of the corresponding second transmission wheel 30 and the first transmission wheel 26 are connected by the transmission belt 31. The transmission belt 31 is made of wear-resistant and tough material and can stably transmit the power between the first transmission wheel 26 and the second transmission wheel 30, ensuring that the rotation of the support roller 22 can synchronously drive the horizontal shaft 29 to rotate, thereby triggering the damping deceleration function of the coil spring 32, so that the support roller 22 gradually decelerates, and finally achieves a smooth stop of the seat, avoiding secondary danger.

[0025] Working principle: When the elderly person sits on the seat 1 and leans back, their lower back will press against the lumbar support 11. As the lumbar support 11 moves, it will cause all the rotating frames 6 to bend via the connecting rod 10. When the rotating frames 6 bend, they will bend the spring plate 8 via the pressure roller 9. The bent spring plate 8 generates elastic force to support the lumbar support 11 in the opposite direction, thus supporting the elderly person's lower back and automatically following the changes in the elderly person's sitting posture and leaning angle. When the pressure roller 9 bends the spring plate 8, it will slide relative to its surface, causing the lever arm of the bent spring plate 8 to change, compensating for the change in elastic force with the constantly changing degree of bending. This ensures that the lumbar support 11 always provides constant support to the elderly person's lower back, greatly improving comfort. In addition, rotating the adjustment knob 16 can drive the active bevel gear 17 to rotate. When the active bevel gear 17 rotates, it will drive the driven bevel gears 18 and the short shaft 12 on both sides to rotate, thereby driving the threaded rod 13 to rotate. When the threaded rod 13 rotates, it will drive the support platforms 14 on both sides to move inward or outward simultaneously. When the position of the support platform 14 changes, the bending fulcrum of the spring plate 8 also changes, resulting in a change in the elastic force generated during bending. Consequently, the support force of the lumbar support 11 also changes, allowing for adjustment of the lumbar support 11's support force according to the elderly person's habits or weight. When the seat tilts backward, the support corner plate 25 is pressed into the corner plate groove 23. At this time, the support roller 22 contacts the ground and rotates, causing the seat to move backward, preventing a direct fall. As the support roller 22 rotates, it drives the first transmission wheel 26 to rotate. The first transmission wheel 26, through the transmission belt 31, drives the second transmission wheel 30 and the horizontal shaft 29 to rotate. The rotating horizontal shaft 29 continuously tightens the coil spring 32, which in turn applies gradually increasing resistance to the rotating horizontal shaft 29, thereby reducing the rotational speed of the horizontal shaft 29. This causes the support roller 22 to gradually decelerate until it comes to a complete stop, returning the seat to its upright position. This effectively prevents the support roller 22 from accelerating and causing the seat to move backward, thus improving safety.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-functional chair specifically designed for the elderly, comprising a seat (1), characterized in that, The seat (1) is fixedly installed with a first enclosure (2) on both the left and right sides. The rear of the top of the first enclosure (2) is fixedly installed with a rear column (3). The lower inner side of the rear column (3) is connected to both ends of the cross frame (5) by a fixing rod. The four corners of the cross frame (5) are movably installed with a rotating frame (6). The two sides of the cross frame (5) are provided with a first chamber (7). The two sides of the first chamber (7) are fixedly installed with a spring plate (8) and the end of the spring plate (8) extends into the interior of the rotating frame (6) on the corresponding side. The inside of the spring plate (8) is fixedly installed with a pressure roller (9) and the rear end of the pressure roller (9) abuts against the front end surface of the spring plate (8) on the corresponding side. The front end of the rotating frame (6) is movably installed with a connecting rod (10). The ends of the connecting rod (10) are movably installed at the four corners of the rear end of the waist support (11). The first enclosure (2) has support legs (19) fixedly installed on both sides of the bottom end. The bottom ends of the support legs (19) on both sides are fixedly installed on the top sides of the base plate (20). The bottom rear side of the base plate (20) is provided with roller grooves (21), and support rollers (22) are movably installed inside the roller grooves (21).

2. The multi-functional chair for the elderly according to claim 1, characterized in that, The two ends of the backrest cushion (4) are fixedly installed on the upper inner side of the rear column (3), and a seat cushion (33) is placed on the upper surface of the seat (1). Armrests (34) are fixedly installed on the front top of the first enclosure (2).

3. The multi-functional chair for the elderly according to claim 1, characterized in that, The first chamber (7) is equipped with a support platform (14) inside, and both sides of the support platform (14) abut against the rear end surface of the spring plate (8) on the corresponding side. The middle of the inner wall of the first chamber (7) is equipped with a short shaft (12), and the outer end of the short shaft (12) is fixedly equipped with a threaded rod (13), and the outer diameter of the threaded rod (13) is threaded to the middle of the support platform (14) on the corresponding side.

4. A multi-functional chair for the elderly with auxiliary functions according to claim 3, characterized in that, The cross frame (5) has a second chamber (15) in the middle. An adjustment knob (16) is movably installed at the rear end of the cross frame (5). The middle part of the adjustment knob (16) extends into the interior of the second chamber (15) through a movable shaft and is fixedly installed with a driving bevel gear (17). The inner ends of the short shaft (12) extend into the interior of the second chamber (15) and are fixedly installed with driven bevel gears (18). The inner ends of the driven bevel gears (18) are respectively meshed with the two sides of the driving bevel gears (17).

5. A multi-functional chair for the elderly with auxiliary functions according to claim 1, characterized in that, Angle plate grooves (23) are provided on both sides of the bottom rear side of the base plate (20) near the roller groove (21), and a support angle plate (25) is movably installed inside the angle plate groove (23) by a support spring (24).

6. A multi-functional chair for the elderly with auxiliary functions according to claim 1, characterized in that, The front and rear sides of the seat (1) are fixedly installed with a second enclosure (27). The interior of the second enclosure (27) on the rear side is provided with a transverse groove (28). A transverse shaft (29) is movably installed inside the transverse groove (28). The outer diameter of the transverse shaft (29) is connected to the inner wall of the transverse groove (28) by a number of coil springs (32).

7. A multi-functional chair for the elderly with auxiliary functions according to claim 6, characterized in that, The first transmission wheel (26) is fixedly installed in the middle of each of the support rollers (22), and the second transmission wheel (30) is fixedly installed at both ends of the horizontal shaft (29). The outer diameters of the second transmission wheel (30) and the first transmission wheel (26) on the corresponding sides are connected by a transmission belt (31).

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