Hidden roller type chair with self-adaptive adjustment function for old people

Abstract

The invention relates to the technical field of chairs for old people, in particular to a hidden roller type chair for old people with a self-adaptive adjusting function, which comprises a base, a fixed disc is arranged at the lower end of the base, fixed plates fixedly connected with the base are respectively mounted at two ends of the fixed disc, and a rotatable turntable is mounted on the fixed disc. A plurality of first arc-shaped grooves are evenly formed in the rotary disc, a sliding plate connected with the base in a sliding mode is arranged at the lower end of the rotary disc, a plurality of second arc-shaped grooves corresponding to the first arc-shaped grooves are evenly formed in the sliding plate, first limiting columns are slidably installed in the first arc-shaped grooves in a limiting mode, and sleeves are arranged on the first limiting columns. And a second limiting column is slidably installed in the second arc-shaped groove in a limiting mode, a sleeve rod connected with the sleeve in a sleeving mode is arranged on the second limiting column, a self-adaptive adjusting structure is installed at the upper end of the fixing disc, and the problems that in the prior art, movement and stability are difficult to consider at the same time, and the adaptability of the adjusting function is insufficient are effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of old people's chairs, and in particular to a hidden roller type old people's chair with self-adaptive adjustment function. BACKGROUND

[0002] At present, the aging phenomenon is becoming more and more serious in China, and chairs and stools are all the same, and there is a lack of old people's chairs designed for old people in the market, and the old people's chair has great development space in the domestic market.

[0003] The existing old people's chairs generally have two technical problems: first, it is difficult to balance movement and stability, the traditional old people's chair with rollers has poor fixation and is easy to slide, and the roller-free version needs to be manually carried, which brings inconvenience to the independent movement of the old people; second, the adjustment function has insufficient adaptability, the back plate and foot plate of most old people's chairs need to be manually operated and cannot be synchronously linked, which is difficult to meet the comfortable needs of the old people in different scenes such as sitting posture and half-lying, and the adjustment process is easy to cause jamming and angle deviation, which is not friendly to the old people with difficulty in movement.

[0004] At the same time, the roller structure of part of the old people's chairs is exposed, which not only affects the appearance, but also may have the risk of tripping, and lacks comprehensive consideration of the safety of the old people in use. SUMMARY

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present application provides a hidden roller type old people's chair with self-adaptive adjustment function, which effectively solves the problems of difficult balance between movement and stability and insufficient adjustment function adaptability in the prior art.

[0006] In order to achieve the above purpose, the following technical scheme is adopted in the present application: A hidden roller type old people's chair with self-adaptive adjustment function, comprising a base, a fixed disc is arranged at the lower end of the base, two fixed plates fixedly connected with the base are respectively arranged at the two ends of the fixed disc, a rotatable turntable is arranged on the fixed disc, a plurality of first arc-shaped grooves are uniformly arranged on the turntable, a sliding plate slidably connected with the base is arranged at the lower end of the turntable, a plurality of second arc-shaped grooves corresponding to the first arc-shaped grooves are uniformly arranged on the sliding plate, a first limiting column is limitingly and slidably arranged in the first arc-shaped groove, a sleeve is arranged on the first limiting column, a second limiting column is limitingly and slidably arranged in the second arc-shaped groove, a sleeve rod connected with the sleeve is arranged on the second limiting column, a self-adaptive adjustment structure is arranged at the upper end of the fixed disc, the self-adaptive adjustment structure comprises a foot plate and a back plate which synchronously rotate.

[0007] Preferably, a motor is installed on the fixing disc, an output end of the motor is fixedly installed with a rotating disc, a screw rod is fixedly connected at the center of the rotating disc, a screw barrel threadedly matched with the screw rod is fixedly installed on the sliding plate, and sliding pins slidably connected with the inner wall of the base are arranged at the two ends of the sliding plate.

[0008] Preferably, the first arc-shaped groove and the second arc-shaped groove are cross arranged.

[0009] Preferably, a spur gear is fixedly installed at the output end of the motor, first and second spur racks are installed at the two ends of the spur gear, a seat plate is fixedly connected with the upper end of the base, and the first and second spur racks are slidably connected with the inner wall of the seat plate.

[0010] Preferably, a first fixing block is fixedly connected at one end of the first spur rack, a back supporting rod is fixedly connected with the first fixing block, a back support frame is rotatably connected at one end of the seat plate, a groove is formed at one end of the back support frame, and the two ends of the back supporting rod are slidably arranged in the groove.

[0011] Preferably, a second fixing block is fixedly connected at one end of the second spur rack, a foot supporting rod is fixedly connected with the second fixing block, a foot support frame is rotatably connected at one end of the seat plate, and a groove slidably connected with the foot supporting rod is formed at one end of the foot support frame.

[0012] Preferably, the motor is a double-shaft output motor.

[0013] Preferably, the first and second spur racks are symmetrically arranged at the two ends of the spur gear.

[0014] Preferably, handrails are installed at the two sides of the upper end of the base.

[0015] Compared with the prior art, the application has the following beneficial effects: 1. The universal wheels can be switched between hidden and extended, the universal wheels are extended when moving, the old people can independently push the chair to move flexibly, the universal wheels are hidden in the base when fixed, the base is attached to the ground to avoid sliding, no manpower is needed for carrying, the universal wheels are retracted in the direction of the inner periphery of the rotating disc when hidden, the universal wheels move in the direction of the outer periphery of the rotating disc when extended, the supporting range is improved, the stability of the universal wheels in supporting and moving is ensured, the convenience and stability are considered, the hidden design of the wheels avoids tripping the old people by the exposed structure, and the overall appearance of the chair is improved, which meets the safety requirements of the old people in use.

[0016] 2. The first straight rack and the second straight rack slide reversely along the inner wall of the seat plate, the first straight rack drives the back support rod to move through the first fixed block, the both ends of the back support rod slide in the groove of the back support frame, push the back support frame to rotate around the hinge point with the seat plate, and then drive the back plate to adjust the inclination angle synchronously, the second straight rack drives the foot support rod to move through the second fixed block, the foot support rod slides in the groove of the foot support frame, push the foot support frame to rotate around the hinge point with the seat plate, and then drive the foot plate to adjust the inclination angle synchronously, since the first straight gear and the second straight rack are symmetrical linkage, the back plate and the foot plate always keep synchronous adjustment, different scenes such as sitting posture and half lying can be quickly switched, and there is no problem of jamming and angle deviation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a modeling diagram of the hidden roller type old man chair with adaptive adjustment function; Figure 2 It is a first axonometric view of the hidden roller type old man chair with adaptive adjustment function; Figure 3 It is a second axonometric view of the hidden roller type old man chair with adaptive adjustment function; Figure 4 It is a structural schematic view of the first straight rack and the second straight rack of the hidden roller type old man chair with adaptive adjustment function; Figure 5 It is a schematic view of the fixed disc of the hidden roller type old man chair with adaptive adjustment function; Figure 6 It is a structural schematic view of the rotating disc of the hidden roller type old man chair with adaptive adjustment function; Figure 7 It is a structural schematic view of the sleeve of the hidden roller type old man chair with adaptive adjustment function; Figure 8 It is a structural schematic view of the sliding plate of the hidden roller type old man chair with adaptive adjustment function; Figure 9 It is a structural schematic view of the second arc-shaped groove of the hidden roller type old man chair with adaptive adjustment function; Figure 10 It is a structural schematic view of the foot support frame and the back support frame of the hidden roller type old man chair with adaptive adjustment function; In the figure: 1, base, 2, handrail, 3, foot plate, 4, back plate, 5, seat plate, 6, slide plate, 7, foot support, 8, motor, 9, first straight rack, 10, straight gear, 11, second straight rack, 12, foot support rod, 13, back support rod, 14, back support, 15, first fixed block, 16, second fixed block, 17, fixed disc, 18, fixed plate, 19, screw cylinder, 20, slide pin, 21, rotating disc, 22, first arc-shaped slot, 23, first limiting column, 24, sleeve, 25, screw rod, 26, sleeve rod, 27, second arc-shaped slot, 28, universal wheel, 29, second limiting column. DETAILED DESCRIPTION

[0018] As Figures 1-10 shown, a hidden roller type old chair with adaptive adjustment function, including base 1, the lower end of the base 1 is provided with a fixed disc 17, both ends of the fixed disc 17 are respectively installed with the fixed plate 18 fixedly connected with the base 1, the fixed disc 17 is installed with rotatable rotating disc 21, the rotating disc 21 is uniformly provided with a plurality of first arc-shaped slots 22, the lower end of the rotating disc 21 is provided with a slide plate 6 connected with the base 1, the slide plate 6 is uniformly provided with a plurality of second arc-shaped slots 27 corresponding to the first arc-shaped slots 22, the first arc-shaped slots 22 are limitedly installed with the first limiting column 23, the first limiting column 23 is provided with a sleeve 24, the second arc-shaped slots 27 are limitedly installed with the second limiting column 29, the second limiting column 29 is provided with a sleeve rod 26 connected with the sleeve 24, the upper end of the fixed disc 17 is installed with an adaptive adjustment structure, the adaptive adjustment structure includes synchronously rotating foot plate 3 and back plate 4.

[0019] The fixed disc 17 is firmly connected with the base 1 through the fixing plates 18 at both ends to provide a stable installation basis for the whole mechanism; the rotating disc 21 can rotate on the fixed disc 17, and the sliding plate 6 is in sliding cooperation with the base 1, when the rotating disc 21 rotates, the sliding plate 6 slides relative to the base 1, because the first arc-shaped groove 22 on the rotating disc 21 and the second arc-shaped groove 27 on the sliding plate 6 are cross arranged, the first arc-shaped groove 22 drives the first limiting column 23 inside and the second limiting column 29 at the lower end to slide along the groove under the limiting action of the second arc-shaped groove 27, the sleeve 24 on the first limiting column 23 is connected with the sleeve rod 26 on the second limiting column 29, the sleeve 24 and the sleeve rod 26 are arranged to set the first limiting column 23 and the second limiting column 29 as an integrated structure to move synchronously to the peripheral direction of the rotating disc 21, and the sleeve rod 26 can slide along the inner wall of the sleeve 24 to avoid limiting the downward movement of the second limiting column 29, thereby driving the universal wheel 28 connected with the second limiting column 29 to realize up and down lifting, that is, the universal wheel 28 is hidden in the base 1 when it rises, and the universal wheel 28 supports the chair when it descends, the self-adaptive adjusting structure at the upper end of the fixed disc 17 drives the foot plate 3 and the back plate 4 to rotate synchronously through internal transmission cooperation, which can switch different states such as sitting posture, semi-laying and the like according to requirements, and realize the self-adaptive adjusting function.

[0020] The fixed disc 17 is firmly connected with the base 1 through the fixing plates 18 at both ends to provide a stable installation basis for the whole mechanism; the rotating disc 21 can rotate on the fixed disc 17, and the sliding plate 6 is in sliding cooperation with the base 1, when the rotating disc 21 rotates, the sliding plate 6 slides relative to the base 1, because the first arc-shaped groove 22 on the rotating disc 21 and the second arc-shaped groove 27 on the sliding plate 6 are cross arranged, the first arc-shaped groove 22 drives the first limiting column 23 inside and the second limiting column 29 at the lower end to slide along the groove under the limiting action of the second arc-shaped groove 27, the sleeve 24 on the first limiting column 23 is connected with the sleeve rod 26 on the second limiting column 29, the sleeve 24 and the sleeve rod 26 are arranged to set the first limiting column 23 and the second limiting column 29 as an integrated structure to move synchronously to the peripheral direction of the rotating disc 21, and the sleeve rod 26 can slide along the inner wall of the sleeve 24 to avoid limiting the downward movement of the second limiting column 29, thereby driving the universal wheel 28 connected with the second limiting column 29 to realize up and down lifting, that is, the universal wheel 28 is hidden in the base 1 when it rises, and the universal wheel 28 supports the chair when it descends, the self-adaptive adjusting structure at the upper end of the fixed disc 17 drives the foot plate 3 and the back plate 4 to rotate synchronously through internal transmission cooperation, which can switch different states such as sitting posture, semi-laying and the like according to requirements, and realize the self-adaptive adjusting function.

[0021] As shown in Figure 7 and 8 , the double-shaft output motor 8 is started, one end of the output shaft of the motor 8 drives the rotating disc 21 on the fixed disc 17 to rotate, at the same time, the screw rod 25 at the center of the rotating disc 21 rotates synchronously, the screw rod 25 is threadedly connected with the screw cylinder 19 on the sliding plate 6, and the sliding plate 6 is slidingly connected with the inner wall of the base 1 through the sliding pins 20 at both ends, the screw rod 25 drives the sliding plate 6 to slide along the base 1 in the axial direction stably.

[0022] The first arc-shaped groove 22 and the second arc-shaped groove 27 are cross arranged.

[0023] As shown in Figure 9 , the first arc-shaped groove 22 on the rotating disc 21 and the second arc-shaped groove 27 on the sliding plate 6 are cross arranged, when the rotating disc 21 rotates, the first arc-shaped groove 22 drives the first limiting column 23 inside to slide, and then drives the universal wheel 28 at the lower end of the second limiting column 29 to move along the second arc-shaped groove 27 on the sliding plate 6 to the circumferential peripheral direction of the rotating disc 21, thereby improving the supporting range of the universal wheel 28.

[0024] The output end of the motor 8 is fixedly provided with a spur gear 10, two ends of the spur gear 10 are respectively provided with a first spur rack 9 and a second spur rack 11, the upper end of the base 1 is fixedly connected with a seat plate 5, the first spur rack 9 and the second spur rack 11 are respectively slidably connected with the inner wall of the seat plate 5, one end of the first spur rack 9 is fixedly connected with a first fixed block 15, the first fixed block 15 is fixedly connected with a back supporting rod 13, one end of the seat plate 5 is rotatably connected with a back support 14, one end of the back support 14 is provided with a groove, two ends of the back supporting rod 13 are slidably arranged in the groove, one end of the second spur rack 11 is fixedly connected with a second fixed block 16, the second fixed block 16 is fixedly connected with a foot supporting rod 12, one end of the seat plate 5 is rotatably connected with a foot support 7, one end of the foot support 7 is provided with a groove slidably connected with the foot supporting rod 12.

[0025] As shown in Figure 4 and 10 , the other end output shaft of the double-shaft output motor 8 drives the spur gear 10 to rotate, the first spur rack 9 and the second spur rack 11 symmetrically meshed at two ends of the spur gear 10 slide reversely along the inner wall of the seat plate 5, the first spur rack 9 drives the back supporting rod 13 to move through the first fixed block 15, the two ends of the back supporting rod 13 slide in the groove of the back support 14, the back support 14 is driven to rotate around the hinge point with the seat plate 5, thereby driving the back plate 4 to synchronously adjust the inclination angle, the second spur rack 11 drives the foot supporting rod 12 to move through the second fixed block 16, the foot supporting rod 12 slides in the groove of the foot support 7, the foot support 7 is driven to rotate around the hinge point with the seat plate 5, thereby driving the foot plate 3 to synchronously adjust the inclination angle, since the first spur gear 10 and the second spur rack 11 are symmetrically linked, the back plate 4 and the foot plate 3 always keep synchronous adjustment, different scenes such as sitting posture and half-lying can be quickly switched, and there is no problem of jamming and angle deviation.

[0026] The motor 8 is a double-shaft output motor 8.

[0027] As shown in Figures 4-6 , the motor 8 is a double-shaft output motor 8, which can ensure synchronous driving of the rotating disc 21 and the spur gear 10.

[0028] The first spur rack 9 and the second spur rack 11 are symmetrically arranged at two ends of the spur gear 10.

[0029] As shown in Figure 10 , since the first spur gear 10 and the second spur rack 11 are symmetrically linked, the back plate 4 and the foot plate 3 always keep synchronous adjustment, different scenes such as sitting posture and half-lying can be quickly switched.

[0030] The upper end of the base 1 is provided with handrails 2 on both sides.

[0031] As shown in Figure 2 , the handrails 2 can provide support for the hands of the old people.

[0032] The working process of the present application is: starting the double-shaft output motor 8, the one end output shaft of the motor 8 drives the rotating disc 21 on the fixed disc 17 to rotate, and the screw rod 25 at the center of the rotating disc 21 rotates synchronously.

[0033] The screw rod 25 is threadedly matched with the screw cylinder 19 on the sliding plate 6, and the sliding plate 6 is slidingly limited by the sliding pins 20 at both ends in the inner wall of the base 1, and the screw rod 25 rotates to drive the sliding plate 6 to slide stably along the axial direction of the base 1.

[0034] The first arc-shaped groove 22 on the rotating disc 21 is crossly arranged with the second arc-shaped groove 27 on the sliding plate 6, when the rotating disc 21 rotates, the first arc-shaped groove 22 drives the first limiting column 23 inside to slide, the sleeve 24 on the first limiting column 23 is connected with the sleeve rod 26 on the second limiting column 29, the sliding of the two groups of limiting columns is linked through the sleeve 24 - sleeve rod 26, drives the universal wheel 28 to move up and down in the vertical direction, at the same time, since the first arc-shaped groove 22 and the second arc-shaped groove 27 are crossly arranged, when the rotating disc 21 rotates, the first arc-shaped groove 22 cooperates with the second arc-shaped groove 27 to realize the movement of the first limiting column 23 and the second limiting column 29 along the first arc-shaped groove 22 and the second arc-shaped groove 27 to the circumferential periphery of the rotating disc 21, and further drives the universal wheel 28 to move to the circumferential periphery of the rotating disc 21 while extending downward, expands the supporting range, therefore, when the universal wheel 28 extends to the circumferential periphery of the rotating disc 21, the old person chair can be flexibly moved; when the universal wheel 28 retracts to the circumferential periphery of the rotating disc 21, the universal wheel 28 is hidden in the middle of the sliding plate 6, the lower end of the base 1 is attached to the ground, realizes the stable fixation while hiding the universal wheel 28 of the old person chair, avoids the risk of tripping, improves the comprehensive consideration of the safety for the old people.

[0035] At the same time, the other end output shaft of the double-shaft output motor 8 drives the spur gear 10 to rotate, the first spur rack 9 and the second spur rack 11 symmetrically engaged at both ends of the spur gear 10 slide reversely along the inner wall of the seat plate 5.

[0036] The first spur rack 9 drives the back support rod 13 to move through the first fixed block 15, the back support rod 13 slides at both ends in the groove of the back support frame 14, drives the back support frame 14 to rotate around the hinge point with the seat plate 5, and further drives the back plate 4 to adjust the inclination angle synchronously.

[0037] The second spur rack 11 drives the foot support rod 12 to move through the second fixed block 16, the foot support rod 12 slides in the groove of the foot support frame 7, drives the foot support frame 7 to rotate around the hinge point with the seat plate 5, and further drives the foot plate 3 to adjust the inclination angle synchronously.

[0038] Since the first spur gear 10 and the second spur rack 11 are symmetrically linked, the back plate 4 and the foot plate 3 always keep synchronous adjustment, can quickly switch different scenes such as sitting posture, half-lying, etc., and has no problem of jamming and angle deviation.

[0039] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptations will be readily apparent to those of ordinary skill in this art in view of the foregoing description. This application is to be limited only by the following claims, and the equivalents thereof.

Claims

1. A hidden roller type old person chair with self-adapting function, comprising a base (1), characterized in that: The lower end of the base (1) is provided with a fixed disc (17), both ends of the fixed disc (17) are respectively provided with a fixed plate (18) fixedly connected with the base (1), a rotatable turntable (21) is installed on the fixed disc (17), a plurality of first arc-shaped grooves (22) are uniformly formed on the turntable (21), a sliding plate (6) is slidably connected with the base (1) at the lower end of the turntable (21), a plurality of second arc-shaped grooves (27) corresponding to the first arc-shaped grooves (22) are uniformly formed on the sliding plate (6), a first limiting column (23) is slidably installed in the first arc-shaped groove (22), a sleeve (24) is arranged on the first limiting column (23), a second limiting column (29) is slidably installed in the second arc-shaped groove (27), a sleeve rod (26) is sleevedly connected with the sleeve (24) on the second limiting column (29), an adaptive adjusting structure is installed on the upper end of the fixed disc (17), and the adaptive adjusting structure comprises a foot plate (3) and a back plate (4) which synchronously rotate.

2. The chair according to claim 1, wherein the chair is provided with a self- adjusting function. A motor (8) is installed on the fixed disc (17), the output end of the motor (8) is fixedly installed with the turntable (21), a lead screw (25) is fixedly connected at the center of the turntable (21), a screw cylinder (19) threadedly matched with the lead screw (25) is fixedly installed on the sliding plate (6), and sliding pins (20) slidably connected with the inner wall of the base (1) are arranged at both ends of the sliding plate (6).

3. The chair according to claim 1, wherein the chair is provided with a self- adjusting function. The first arc-shaped grooves (22) and the second arc-shaped grooves (27) are cross arranged.

4. The chair according to claim 1, wherein the chair is provided with a self- adjusting function. The output end of the motor (8) is fixedly installed with a spur gear (10), first and second spur gears (9) and (11) are respectively arranged at both ends of the spur gear (10), the upper end of the base (1) is fixedly connected with a seat plate (5), and the first and second spur gears (9) and (11) are respectively slidably connected with the inner wall of the seat plate (5).

5. The chair with hidden rollers for the elderly with self-adjusting function according to claim 4, characterized in that: One end of the first spur gear (9) is fixedly connected with a first fixed block (15), the first fixed block (15) is fixedly connected with a back supporting rod (13), one end of the seat plate (5) is rotatably connected with a back support frame (14), a groove is formed at one end of the back support frame (14), and both ends of the back supporting rod (13) are slidably arranged in the groove.

6. The chair with a hidden roller for the elderly with self-adjusting function according to claim 5, characterized in that: One end of the second spur gear (11) is fixedly connected with a second fixed block (16), the second fixed block (16) is fixedly connected with a foot supporting rod (12), one end of the seat plate (5) is rotatably connected with a foot support frame (7), and a groove slidably connected with the foot supporting rod (12) is formed at one end of the foot support frame (7).

7. The chair according to claim 4, wherein the chair is provided with a self- adjusting function. The motor (8) is a double-shaft output motor (8).

8. The chair according to claim 1, wherein the chair is provided with a self- adjusting function. The first and second spur gears (9) and (11) are symmetrically arranged at both ends of the spur gear (10).

9. The chair according to claim 1, wherein the chair is provided with a self- adjusting function. Handrails (2) are respectively arranged at both sides of the upper end of the base (1).

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