Protective chair

Abstract

The invention relates to the field of medical auxiliary supplies, and discloses a protection chair which comprises a chair surface, front supporting legs are fixedly connected to the lower surface of the chair surface, armrests are fixedly connected to the outer wall of the chair surface, supporting blocks are fixedly connected to the inner walls of the front supporting legs, first sliding grooves are formed in the outer walls of the front supporting legs, and the first sliding grooves are fixedly connected to the lower surface of the chair surface. The outer wall of the chair surface is fixedly connected with a rear supporting leg, the outer wall of the rear supporting leg is fixedly connected with a supporting connecting rod, the outer wall of the supporting connecting rod is fixedly connected to the outer wall of the front supporting leg, and the outer wall of the chair surface is fixedly connected with a self-locking motor. A first spring in a contracted state rebounds and resets to push a first sliding block to move downwards, an inclined rod is unfolded through a supporting rod in the downward moving process of the first sliding block, the supporting effect can be achieved when a user stands up to cause forward turning of the seat due to an accident, the seat is kept relatively stable, and further toppling or shaking is avoided; and a user can be effectively prevented from falling down and being injured due to forward turning of the seat.

Description

Technical Field

[0001] The invention relates to the technical field of medical auxiliary products, in particular to a nursing chair. Background Art

[0002] A rising chair is a chair specially designed to help users with limited mobility or who need special support to get up more safely and conveniently. Different from traditional chairs, the rising chair mainly takes into account the difficulties of sitting and getting up for semi-disabled elderly people or patients. It allows users to sit and rest conveniently while getting up easily.

[0003] In the prior art, when a user stands up or changes his / her posture during use of a chair, there are not enough support points to balance the change in the user's center of gravity, and the stability of the chair will be affected, which may easily cause the chair to tilt or fall over, posing a safety hazard to the user. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a standing chair that solves the problem that when a user stands up or changes his posture, there are insufficient support points to balance the change in the user's center of gravity, which affects the stability of the chair and easily causes the chair to tilt or fall over, posing a safety hazard to the user.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a protective chair comprises a seat surface, the lower surface of the seat surface is fixedly connected to a front support leg, the outer wall of the seat surface is fixedly connected to an armrest, the inner wall of the front support leg is fixedly connected to a support block, the outer wall of the front support leg is provided with a sliding groove 1, the outer wall of the seat surface is fixedly connected to a rear support leg, the outer wall of the rear support leg is fixedly connected to a support connecting rod, the outer wall of the support connecting rod is fixedly connected to the outer wall of the front support leg, the outer wall of the seat surface is fixedly connected to a self-locking motor, the output end of the self-locking motor is rotatably connected to the inside of the seat surface and fixedly connected to a rotating column, the outer wall of the rotating column is fixedly connected to a backrest, the outer wall of the rotating column is fixedly connected to a gear 1, the outer wall of the front support leg is provided with a front support mechanism, the lower surface of the seat surface is provided with a rear support mechanism, and the inner wall of the front support leg is provided with a trigger mechanism.

[0006] Preferably, the front supporting mechanism comprises a fixing block 1, the inner wall of the fixing block 1 is fixedly connected to the outer wall of the front supporting leg, and the inner wall of the fixing block 1 is rotatably connected to a diagonal rod.

[0007] Preferably, the front support mechanism also includes a second fixed block, the inner wall of the second fixed block is fixedly connected to the outer wall of the inclined rod, the inner wall of the second fixed block is rotatably connected to the support rod, and the outer wall of the support rod is rotatably connected to the first sliding block.

[0008] Preferably, the front support mechanism also includes a spring 1, one end of which is fixedly connected to the lower end of a fixed block 1, the other end of which is fixedly connected to the top of a sliding block 1, the inner wall of the sliding block 1 is slidably connected to the outer wall of the front support leg, and a slot is provided on the inner wall of the sliding block 1.

[0009] Preferably, the rear support mechanism includes a fixed block three, the upper surface of which is fixedly connected to the upper surface of the seat surface, the outer wall of which is fixedly connected to a limiting rod, the outer wall of which is slidably connected to a side rack, the upper surface of which is fixedly connected to an upper rack, and the tooth end of the upper rack is meshingly connected to the tooth end of gear one.

[0010] Preferably, the tooth end of the side rack is meshedly connected with gear 2, the interior of gear 2 is fixedly connected with a rotating rod, the outer wall of the rotating rod is rotatably connected to the interior of the seat surface, and the outer wall of the rotating rod is fixedly connected with a rear folding support.

[0011] Preferably, the trigger mechanism includes a sliding block 2, the outer wall of the sliding block 2 is slidably connected to the inner wall of the front supporting leg, the bottom end of the sliding block 2 is fixedly connected to a trigger rod, the outer wall of the trigger rod is slidably connected to the inner wall of the supporting block, the top end of the sliding block 2 is fixedly connected to a rectangular plate, and the outer wall of the rectangular plate is provided with an oblique groove.

[0012] Preferably, the trigger mechanism also includes a sliding column 2, the outer wall of which is slidably connected to the inside of the front supporting leg, the outer wall of which is fixedly connected to a rectangular block, the outer wall of the rectangular block is fixedly connected to a sliding column 1, and the outer wall of the sliding column 1 is slidably connected to the inner wall of the inclined groove.

[0013] Preferably, the trigger mechanism also includes a sloped card block, the interior of the sloped card block is fixedly connected to the outer wall of sliding column 2, the outer wall of the sloped card block is slidably connected to the inner wall of sliding groove 1, the outer wall of the sloped card block is slidably connected to the inner wall of sliding block 1, and the outer wall of the sloped card block is slidably connected to the inner wall of the card slot.

[0014] Preferably, the trigger mechanism also includes spring 2, the inner wall of spring 2 is slidably connected to the outer wall of sliding column 2, one end of spring 2 is fixedly connected to the outer wall of the inclined block, and the other end of spring 2 is fixedly connected to the inner wall of sliding groove 1.

[0015] Working principle: when the entire chair tilts forward, the trigger rod will be forced to move upward, driving the rectangular plate to move upward through the sliding block 2, causing the sliding column 1 to passively slide on the inner wall of the inclined groove and move inward, thereby causing the inclined surface block to move inward and slide in the inner wall of the sliding groove 1 opened on the outer wall of the front supporting leg. During the inward movement of the inclined surface block, the outer wall of the inclined surface block will slide out from the inner wall of the groove opened on the inner wall of the sliding block 1, causing the sliding block 1 to lose its limiting function, thereby causing the spring 1 in the contracted state to rebound and reset, pushing the sliding block 1 to move downward. During the downward movement of the sliding block 1, the inclined rod will be unfolded through the support rod, which can play a supporting role when the seat accidentally flips forward when the user stands up.

[0016] When the angle of the backrest is adjusted by the self-locking motor, the self-locking motor will drive the backrest to rotate through the rotating column and drive gear one to rotate at the same time. When gear one rotates, it will prompt the upper rack to move, and the movement of the upper rack will drive the side rack to move and slide on the outer wall of the limit rod. In the process of the movement of the side rack, it will prompt gear two to rotate and then gear two will drive the rotating rod to rotate, so that the rear folding support can rotate and unfold to provide additional support for the back side of the chair.

[0017] The front supporting mechanism and the rear supporting mechanism function according to needs and usage. They are no different from ordinary chairs during normal transportation and storage. They can be stacked or placed like ordinary chairs without taking up extra space. More chairs can be loaded in a limited transportation space, thus reducing transportation costs and improving transportation efficiency. During storage, they can make full use of the storage space, increase the storage capacity of the warehouse, and save storage costs.

[0018] The present invention provides a protective chair having the following beneficial effects: 1. The present invention pushes the sliding block to move downward by the rebound reset of the spring in the contracted state. During the downward movement of the sliding block, the inclined rod is unfolded by the support rod, which can play a supporting role when the seat accidentally flips forward when the user stands up, so that the seat remains relatively stable and avoids further tipping or shaking, which can effectively prevent the user from falling and getting injured due to the forward tipping of the seat.

[0019] 2. In the process of adjusting the angle of the backrest, the present invention rotates the gear 2 to drive the rotating rod to rotate, so that the rear folding support rotates and unfolds to provide additional support to the rear side of the chair, thereby lowering the center of gravity, making the chair more stable, and effectively preventing tipping due to center of gravity shift, providing safety protection for the user.

[0020] 3. The present invention adjusts the angle of the backrest through a self-locking motor, and can firmly fix the backrest after adjusting to the set angle to prevent the angle from accidentally changing due to external force or user's action, thereby avoiding injury to the user.

[0021] 4. The front support mechanism and the rear support mechanism of the present invention work together to make the chair more evenly stressed when bearing the weight of a human body, thereby reducing the burden on various components of the chair and preventing local components from being quickly worn or damaged due to excessive stress, thereby extending the overall service life of the chair.

[0022] 5. The front support mechanism and the rear support mechanism of the present invention take effect according to needs and usage conditions. They are no different from ordinary chairs during normal transportation and storage. They can be stacked or placed like ordinary chairs without taking up extra space. More chairs can be loaded in a limited transportation space, thereby reducing transportation costs and improving transportation efficiency. During storage, the storage space can be fully utilized, the storage capacity of the warehouse can be increased, and storage costs can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic diagram of the partial structure of the backrest of the present invention; Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle; Figure 4 It is a schematic diagram of the partial structure of the front supporting leg of the present invention; Figure 5 It is a schematic cross-sectional view of the internal structure of the front supporting leg of the present invention; Figure 6 It is a schematic diagram of the local structure of the support block of the present invention; Figure 7 for Figure 6 The enlarged schematic diagram of point B in the middle; Figure 8 It is a partial structural schematic diagram of the sliding block of the present invention.

[0024] Among them, 1. chair surface; 2. front support leg; 3. backrest; 4. self-locking motor; 5. rotating column; 6. gear one; 7. rear support leg; 8. supporting connecting rod; 9. handrail; 10. fixed block one; 11. inclined rod; 12. fixed block two; 13. support rod; 14. spring one; 15. sliding block one; 16. support block; 17. sliding block two; 18. trigger rod; 19. rectangular plate; 20. inclined groove; 21. sliding groove one; 22. sliding column two; 23. rectangular block; 24. sliding column one; 25. inclined clamping block; 26. spring two; 27. fixed block three; 28. side rack; 29. ​​upper rack; 30. gear two; 31. rotating rod; 32. rear folding support; 33. limit rod; 34. clamping groove. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Please see attached Figure 1 - Attachment Figure 5 The embodiment of the present invention provides a protective chair, including a seat 1, a front support leg 2 is fixedly connected to the lower surface of the seat 1, a handrail 9 is fixedly connected to the outer wall of the seat 1, a support block 16 is fixedly connected to the inner wall of the front support leg 2, a sliding groove 21 is opened on the outer wall of the front support leg 2, a rear support leg 7 is fixedly connected to the outer wall of the seat 1, a support link 8 is fixedly connected to the outer wall of the rear support leg 7, the outer wall of the support link 8 is fixedly connected to the outer wall of the front support leg 2, a self-locking motor 4 is fixedly connected to the outer wall of the seat 1, the output end of the self-locking motor 4 is rotatably connected to the inside of the seat 1 and fixedly connected to a rotating column 5, the outer wall of the rotating column 5 is fixedly connected to a backrest 3, the outer wall of the rotating column 5 is fixedly connected to a gear 6, the outer wall of the front support leg 2 is provided with a front support mechanism, the lower surface of the seat 1 is provided with a rear support mechanism, and the inner wall of the front support leg 2 is provided with a trigger mechanism.

[0027] Specifically, the handrail 9 fixedly connected to the outer wall of the chair surface 1 is used to provide support and stability, helping people with limited mobility, weak bodies or people in recovery to maintain body balance when getting up, sitting down or moving, and reducing the risk of falling. The support link 8 is used to enhance the structural stability, connect the front support leg 2 and the rear support leg 7, form a stable structure, and improve the overall stability of the chair. The self-locking motor 4 is used to adjust the angle of the backrest 3. The self-locking motor 4 has a self-locking function, which can firmly fix the backrest 3 after adjusting to the set angle to prevent it from accidentally changing the angle due to external force or the user's action, thereby avoiding injury to the user. The support block 16 is in contact with the ground when in use. The front support mechanism is used to provide additional support when the seat accidentally flips forward when the user gets up, so that the seat remains relatively stable and avoids further tipping or shaking. The rear support mechanism is used to provide additional support to the rear side of the chair when the angle of the backrest 3 is adjusted. The trigger mechanism is used to work in conjunction with the front support structure, and when the chair tilts forward, the trigger mechanism automatically deploys to keep the seat relatively stable.

[0028] Please see attached Figure 1 - Attachment Figure 4The front support mechanism includes a fixed block 10, the inner wall of the fixed block 10 is fixedly connected to the outer wall of the front support leg 2, and the inner wall of the fixed block 10 is rotatably connected to the inclined rod 11; the front support mechanism also includes a fixed block 12, the inner wall of the fixed block 12 is fixedly connected to the outer wall of the inclined rod 11, the inner wall of the fixed block 12 is rotatably connected to the support rod 13, and the outer wall of the support rod 13 is rotatably connected to the sliding block 15; the front support mechanism also includes a spring 14, one end of the spring 14 is fixedly connected to the lower end of the fixed block 10, and the other end of the spring 14 is fixedly connected to the top of the sliding block 15, the inner wall of the sliding block 15 is slidably connected to the outer wall of the front support leg 2, and the inner wall of the sliding block 15 is provided with a slot 34.

[0029] Specifically, the front support mechanism is used to provide support when the seat accidentally tips forward when the user stands up, so that the seat remains relatively stable. When the chair tilts, the trigger mechanism releases the restriction on the sliding block 15, thereby causing the spring 14 in the contracted state to rebound and reset, pushing the sliding block 15 to move downward. During the downward movement of the sliding block 15, the support rod 13 is prompted to rotate simultaneously on the inner walls of the sliding block 15 and the fixed block 2 12 and expand the fixed block 2 12 outward, thereby causing the diagonal rod 11 to expand to provide additional support to the front side of the chair, so that the seat remains relatively stable.

[0030] Please see attached Figure 1 - Attachment Figure 3 The rear support mechanism includes a fixed block three 27, the upper surface of the fixed block three 27 is fixedly connected to the upper surface of the seat surface 1, the outer wall of the fixed block three 27 is fixedly connected to the limit rod 33, the outer wall of the limit rod 33 is slidably connected with the side rack 28, the upper surface of the side rack 28 is fixedly connected with the upper rack 29, the tooth end of the upper rack 29 is meshingly connected with the tooth end of the gear one 6; the tooth end of the side rack 28 is meshingly connected with the gear two 30, the interior of the gear two 30 is fixedly connected with a rotating rod 31, the outer wall of the rotating rod 31 is rotatably connected to the interior of the seat surface 1, and the outer wall of the rotating rod 31 is fixedly connected to the rear folding support 32.

[0031] Specifically, when the angle of the backrest 3 is adjusted by the self-locking motor 4, the center of gravity will change when the angle of the backrest 3 changes. It is necessary to increase the rear support range to reduce the risk of a person falling backward from the chair, to play a better protective role, and to ensure the safety of the user. When the self-locking motor 4 is started to drive the rotating column 5 to adjust the angle of the backrest 3, the self-locking motor 4 will drive the backrest 3 to rotate through the rotating column 5 and drive the gear 1 6 to rotate at the same time. When the gear 1 6 rotates, it will prompt the upper rack 29 to move, and the movement of the upper rack 29 will drive the side rack 28 to move and slide on the outer wall of the limit rod 33. During the movement of the side rack 28, it will prompt the gear 2 30 to rotate, and then the gear 2 30 will drive the rotating rod 31 to rotate, so that the rear folding support 32 can rotate and unfold to provide additional support to the back side of the chair, thereby lowering the center of gravity, making the chair more stable, and effectively preventing tipping caused by the shift of the center of gravity, providing safety protection for the user.

[0032] Please see attached Figure 4 - Attachment Figure 8 The trigger mechanism includes a sliding block 17, the outer wall of the sliding block 17 is slidably connected to the inner wall of the front support leg 2, the bottom end of the sliding block 17 is fixedly connected to a trigger rod 18, the outer wall of the trigger rod 18 is slidably connected to the inner wall of the support block 16, the top of the sliding block 17 is fixedly connected to a rectangular plate 19, and the outer wall of the rectangular plate 19 is provided with an oblique groove 20; the trigger mechanism also includes a sliding column 22, the outer wall of the sliding column 22 is slidably connected to the inside of the front support leg 2, the outer wall of the sliding column 22 is fixedly connected to a rectangular block 23, the outer wall of the rectangular block 23 is fixedly connected to a sliding column 1 24, and the outer wall of the sliding column 1 24 is slidably connected to the inner wall of the front support leg 2. The trigger mechanism further comprises an inclined surface block 25, the interior of the inclined surface block 25 is fixedly connected to the outer wall of the sliding column 22, the outer wall of the inclined surface block 25 is slidably connected to the inner wall of the sliding groove 21, the outer wall of the inclined surface block 25 is slidably connected to the inner wall of the sliding block 15, and the outer wall of the inclined surface block 25 is slidably connected to the inner wall of the card slot 34; the trigger mechanism further comprises a spring 26, the inner wall of the spring 26 is slidably connected to the outer wall of the sliding column 22, one end of the spring 26 is fixedly connected to the outer wall of the inclined surface block 25, and the other end of the spring 26 is fixedly connected to the inner wall of the sliding groove 21.

[0033] Specifically, when the entire chair tilts forward, the trigger rod 18 is forced to move upward, thereby driving the sliding block 217 to move upward and slide on the inner wall of the front supporting leg 2 and driving the rectangular plate 19 to move upward. When the rectangular plate 19 moves upward, the sliding column 24 fixedly connected to the outer wall of the rectangular block 23 is forced to slide passively on the inner wall of the inclined groove 20 and move inward, thereby pulling the sliding column 22 to move inward and slide inside the front supporting leg 2 and pulling the inclined surface block 25 to move inward and slide in the inner wall of the sliding groove 21 opened on the outer wall of the front supporting leg 2, and at the same time, the spring 26 slidably connected to the outer wall of the sliding column 22 is forced to contract. During the inward movement of the inclined block 25, the outer wall of the inclined block 25 will slide out from the inner wall of the slot 34 opened on the inner wall of the sliding block 15. When it completely slides out from the inner wall of the slot 34, the sliding block 15 loses its limiting function, so that the spring 14 in the contracted state rebounds and resets to push the sliding block 15 to move downward. During the downward movement of the sliding block 15, the inclined rod 11 will be unfolded through the support rod 13, which can play a supporting role when the seat accidentally flips forward when the user stands up, so that the seat remains relatively stable and avoids further tipping or shaking, which can effectively prevent the user from falling and getting injured due to the seat flipping forward.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A protective chair, comprising a seat surface (1), characterized in that: The lower surface of the chair surface (1) is fixedly connected to a front support leg (2), the outer wall of the chair surface (1) is fixedly connected to a handrail (9), the inner wall of the front support leg (2) is fixedly connected to a support block (16), the outer wall of the front support leg (2) is provided with a sliding groove (21), the outer wall of the chair surface (1) is fixedly connected to a rear support leg (7), the outer wall of the rear support leg (7) is fixedly connected to a support connecting rod (8), and the outer wall of the support connecting rod (8) is fixedly connected to the outer wall of the front support leg (2). The outer wall of the chair surface (1) is fixedly connected to a self-locking motor (4), the output end of the self-locking motor (4) is rotatably connected to the inside of the chair surface (1) and fixedly connected to a rotating column (5), the outer wall of the rotating column (5) is fixedly connected to a backrest (3), the outer wall of the rotating column (5) is fixedly connected to a gear 1 (6), the outer wall of the front support leg (2) is provided with a front support mechanism, the lower surface of the chair surface (1) is provided with a rear support mechanism, and the inner wall of the front support leg (2) is provided with a trigger mechanism.

2. A protective chair according to claim 1, characterized in that: The front support mechanism comprises a fixing block 1 (10), the inner wall of the fixing block 1 (10) being fixedly connected to the outer wall of the front support leg (2), and the inner wall of the fixing block 1 (10) being rotatably connected to a diagonal rod (11).

3. A protective chair according to claim 1, characterized in that: The front support mechanism further comprises a second fixing block (12), the inner wall of the second fixing block (12) being fixedly connected to the outer wall of the inclined rod (11), the inner wall of the second fixing block (12) being rotatably connected to a support rod (13), and the outer wall of the support rod (13) being rotatably connected to a first sliding block (15).

4. A protective chair according to claim 3, characterized in that: The front support mechanism further comprises a spring 1 (14), one end of which is fixedly connected to the lower end of the fixed block 1 (10), and the other end of which is fixedly connected to the top of the sliding block 1 (15), the inner wall of the sliding block 1 (15) is slidably connected to the outer wall of the front support leg (2), and a slot (34) is provided on the inner wall of the sliding block 1 (15).

5. The protective chair according to claim 1, characterized in that: The rear support mechanism comprises a fixing block three (27), the upper surface of the fixing block three (27) is fixedly connected to the upper surface of the seat surface (1), the outer wall of the fixing block three (27) is fixedly connected to a limiting rod (33), the outer wall of the limiting rod (33) is slidably connected to a side rack (28), the upper surface of the side rack (28) is fixedly connected to an upper rack (29), and the tooth end of the upper rack (29) is meshingly connected to the tooth end of the gear one (6).

6. A protective chair according to claim 5, characterized in that: The tooth end of the side rack (28) is meshedly connected with a second gear (30), the interior of the second gear (30) is fixedly connected with a rotating rod (31), the outer wall of the rotating rod (31) is rotatably connected to the interior of the chair surface (1), and the outer wall of the rotating rod (31) is fixedly connected with a rear folding support (32).

7. The protective chair according to claim 1, characterized in that: The trigger mechanism comprises a second sliding block (17), the outer wall of the second sliding block (17) being slidably connected to the inner wall of the front supporting leg (2), the bottom end of the second sliding block (17) being fixedly connected to a trigger rod (18), the outer wall of the trigger rod (18) being slidably connected to the inner wall of the supporting block (16), the top end of the second sliding block (17) being fixedly connected to a rectangular plate (19), the outer wall of the rectangular plate (19) being provided with an oblique groove (20).

8. The protective chair according to claim 1, characterized in that: The trigger mechanism further comprises a second sliding column (22), the outer wall of the second sliding column (22) being slidably connected to the interior of the front supporting leg (2), the outer wall of the second sliding column (22) being fixedly connected to a rectangular block (23), the outer wall of the rectangular block (23) being fixedly connected to a first sliding column (24), and the outer wall of the first sliding column (24) being slidably connected to the inner wall of the inclined groove (20).

9. The protective chair according to claim 1, characterized in that: The trigger mechanism further comprises an inclined surface block (25), the interior of the inclined surface block (25) being fixedly connected to the outer wall of the second sliding column (22), the outer wall of the inclined surface block (25) being slidably connected to the inner wall of the first sliding groove (21), the outer wall of the inclined surface block (25) being slidably connected to the inner wall of the first sliding block (15), and the outer wall of the inclined surface block (25) being slidably connected to the inner wall of the groove (34).

10. The protective chair according to claim 1, characterized in that: The trigger mechanism further comprises a second spring (26), the inner wall of the second spring (26) being slidably connected to the outer wall of the second sliding column (22), one end of the second spring (26) being fixedly connected to the outer wall of the inclined surface block (25), and the other end of the second spring (26) being fixedly connected to the inner wall of the first sliding groove (21).

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