Rehabilitation chair

Abstract

The utility model provides a rehabilitation chair, relates to the technical field of medical instruments, and solves the technical problem that in the prior art, in the process of assisting a patient in rehabilitation training by bending and resetting a chair back on a chair surface when the patient lies on the face of the existing rehabilitation chair, the chair is easy to slide due to unstable center of gravity. The rehabilitation chair comprises a chair surface which is used for providing support for a patient to sit or lie down; the chair back is rotationally connected to the chair surface and used for supporting the back or the chest of the patient in the using process; the chair legs are fixedly arranged below the chair surface and are used for supporting the chair surface; the connecting mechanism comprises a rotating assembly used for rotating the chair back on the chair surface, a limiting assembly used for fixing the chair back after the chair back rotates on the chair surface, and a positioning assembly used for overturning the chair back to lift the chair surface to stabilize the two chair surfaces, the positioning assembly comprises a chain plate rotationally arranged on the chair back, one end of the chain plate is hinged to the chair surface, and the other end of the chain plate is hinged to the chair surface. And the other end of the chain plate is connected with a pedal for a user to tread.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a rehabilitation chair. Background Art

[0002] Limb rehabilitation training refers to a series of professional training methods designed for limb dysfunction caused by injury, disease, surgery or congenital defects. Its purpose is to restore or improve the patient's limb function, improve motor ability, enhance muscle strength, improve joint flexibility, promote neuromuscular coordination, and restore the ability to perform activities of daily living (ADLs). It usually includes joint range of motion training, muscle training and neuromuscular training. Among them, waist training in joint range of motion training requires the use of auxiliary tools. For some prone exercises, such as when it is necessary to slightly lift the waist to reduce waist pressure or change the training angle, For some prone exercises, such as when it is necessary to slightly lift the waist to reduce waist pressure or change the training angle.

[0003] Currently, when a chair is used for rehabilitation training, the patient lies prone and the chair back is bent and reset on the chair surface to assist the patient in rehabilitation training. However, during use, the center of gravity of the chair may become unstable and easily slide, thereby causing secondary injuries to the patient.

[0004] Therefore, it is urgent to develop a rehabilitation chair to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a rehabilitation chair to solve the technical problem in the prior art that the center of gravity of the chair is unstable and it is easy to slide during the rehabilitation training of the patient lying on his / her stomach by bending the backrest on the chair surface. The various technical effects that can be produced by the preferred technical solution among the various technical solutions provided by the utility model are described in detail below.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a rehabilitation chair, comprising:

[0008] The seat surface is used to provide support for patients when they sit or lie prone;

[0009] The backrest is rotatably connected to the seat surface to provide back or chest support for the patient during use;

[0010] Chair legs, fixedly arranged under the chair surface to support the chair surface;

[0011] A connecting mechanism, the connecting mechanism includes a rotating component for rotating the chair back on the seat surface, a limiting component for fixing the chair back after rotating on the seat surface, and a positioning component for flipping the chair back and lifting the seat surface to stabilize the seat surface. The positioning component includes a chain plate rotatably set on the chair back, one end of the chain plate is hinged to the seat surface, and the other end of the chain plate is connected to a pedal for a user to step on.

[0012] Furthermore, the positioning assembly includes a positioning shaft, a transmission sleeve and an extension plate, the positioning shaft is fixedly connected to the bottom surface of the seat surface, the transmission sleeve is rotatably arranged on the positioning shaft, one end of the chain plate is fixedly connected to the transmission sleeve, the other end of the chain plate is hinged to the extension plate, and the extension plate is fixedly connected to the pedal.

[0013] Furthermore, the limiting assembly includes an L-shaped elastic support plate, which includes a horizontal end and a vertical end. The horizontal end is vertically fixedly connected to the vertical end, the horizontal end and the vertical end are bent at a connection point, the vertical end is fixedly connected to the chair back, and the horizontal end is slidably arranged on the bottom surface of the seat surface.

[0014] Furthermore, the limiting assembly also includes two relatively arranged one-way racks, the teeth on the one-way racks are all arranged toward one end of the rack, the two relatively arranged one-way racks are slidably arranged on the bottom surface of the seat surface, the sliding direction of the two one-way racks is perpendicular to the sliding direction of the horizontal end of the support plate, the horizontal end is arranged between the two one-way racks, and the side walls of the horizontal end facing the two one-way racks are provided with limiting teeth for engaging the one-way racks, and the direction of the limiting teeth is arranged opposite to the direction of the one-way racks.

[0015] Furthermore, the transmission sleeve is configured as a cam, and the transmission sleeve is driven to rotate when the chain plate drives the two one-way racks to slide relative to each other, so that the one-way teeth are engaged with the limiting teeth to limit the position.

[0016] Furthermore, the teeth on the limiting tooth include an inclined guide surface and a vertical surface, and the teeth on the one-way rack are provided with an inclined guide surface and a vertically arranged limiting surface. When the limiting tooth is engaged with the one-way rack, the vertical surface abuts against the limiting surface, and when the support plate extends toward the seat surface, the guide surface contacts the guide surface.

[0017] Furthermore, the rotating assembly includes a rotating shaft and a connecting rod, the rotating shaft is fixedly connected to the seat surface, the connecting rod is arranged in an L shape, one end of the connecting rod is rotatably arranged on the rotating shaft, and the other end of the connecting rod is fixedly connected to the chair back.

[0018] Furthermore, a headrest is fixedly connected to the top of the chair back, and the headrest is provided with a groove for placing the head.

[0019] Furthermore, the chair back is provided with two armrests for pushing the chair back to flip, and the two armrests are symmetrically arranged on both sides of the chair back.

[0020] Furthermore, a rotating ball is provided at the end of the armrest, a limiting ball groove and an armrest groove connected to the limiting ball groove are provided on the chair back, the rotating ball is rotatably arranged in the limiting ball groove, and the armrest groove is used for storing the armrest.

[0021] The preferred technical solution of the utility model can also produce at least the following technical effects:

[0022] During use, the rehabilitation patient sits astride the chair surface and faces one side of the chair back. Then the chain plate is pulled out on the chair surface, and the two pedals are in contact with the ground or the placement surface where the chair legs are in contact. Then the patient steps on the two pedals with both feet to improve the stability of the chair during use. At the same time, the patient pushes the chair back and bends downward to bend over. When it is necessary to stand up straight, the chair back can be held upright with both hands, and the chair back can be pulled upright at the same time to complete the rehabilitation training. In this process, because the patient steps on the pedals with both feet, the chain plate is used to provide a pulling force for the chair surface toward the ground, thereby avoiding the chair from tipping over during rehabilitation exercises, thereby solving the problem of the existing rehabilitation chair where the patient lies prone and the chair back is bent and reset on the chair surface to assist the patient in rehabilitation training, and the chair is prone to unstable center of gravity and easy sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model;

[0025] Figure 2 It is a side sectional view provided by an embodiment of the utility model;

[0026] Figure 3 It is an internal cross-sectional view provided by an embodiment of the utility model;

[0027] Figure 4 yes Figure 3 Enlarged view of Q in

[0028] Figure 5 It is an axial sectional view provided by an embodiment of the utility model.

[0029] Explanation of the reference numerals: 100, seat surface; 110, receiving groove; 120, positioning groove; 200, seat back; 210, limiting ball groove; 220, armrest groove; 230, rotating ball; 240, armrest; 300, chair leg; 400, headrest; 410, groove; 500, connecting mechanism; 510, rotating assembly; 511, connecting rod; 512, connecting shaft; 520, supporting plate; 521, vertical end; 522, horizontal end; 530, one-way rack; 531, limiting surface; 532, guide surface; 540, guide rod; 550, spring; 560, positioning assembly; 561, chain plate; 562, extension plate; 563, pedal; 564, positioning shaft; 565, transmission sleeve; 570, limiting tooth; 571, guide surface; 572, vertical surface. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0031] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0033] The following is combined with Figure 1-5 The present application is further described in detail. An embodiment of the present application discloses a rehabilitation chair.

[0034] Reference Figure 1 and Figure 2 As shown, a rehabilitation chair includes a seat 100, a seat back 200, a seat leg 300, a headrest 400 and a connecting mechanism 500. The seat 100 and the seat back 200 are connected to each other through the connecting mechanism 500, so that the seat back 200 can be bent, flipped and reset through the connecting mechanism 500. Four chair legs 300 are fixedly arranged, and the four chair legs 300 are fixedly connected to the bottom surface of the seat 100, and are located at four corners and extend outwardly. The headrest 400 is fixedly installed on the top of the seat back 200 for the user to place his head.

[0035] The headrest 400 extends from the top of the chair back 200, that is, the chair back 200 is away from the end connected to the seat surface 100. A groove 410 is provided at the top of the headrest 400, and the groove 410 is elliptical. During use, the patient can place the chin or the back of the head on the headrest. Or the patient can place the calf on the headrest during leg stretching to achieve support and reduce possible slipping during the stretching process.

[0036] The chair back 200 is also provided with two armrests 240, which are symmetrically arranged on both sides of the chair back 200. That is, when the user sits on the chair surface 100 facing the chair back 200, he can hold the two armrests 240 forward with both hands.

[0037] The end of the armrest 240 is fixedly connected with a rotating ball 230. The chair back 200 is provided with a limiting ball groove 210 near the side, and the back of the chair back 200 is provided with an armrest groove 220 connected to the limiting ball groove 210, and the armrest groove 220 is connected to the limiting ball groove 210. During the installation process, the rotating ball 230 is set in the limiting ball groove 210, and the armrest 240 is embedded in the armrest groove 220, thereby completing the storage of the armrest 240.

[0038] When it is needed, the armrest 240 is pulled out of the armrest slot 220, and the rotating ball 230 is rotated in the limiting slot, thereby driving the armrest 240 to rotate 180 degrees and protrude horizontally from both sides of the chair back 200 for the user to hold it conveniently.

[0039] Reference Figure 1 and Figure 2 As shown, the connecting mechanism 500 includes a rotating assembly 510 for flipping and resetting the chair back 200, a limiting assembly for fixing the chair back 200 after flipping, and a positioning assembly 560 for improving the stability of the chair after the chair back 200 is flipped.

[0040] The rotating assembly 510 includes two connecting shafts 512 and two connecting rods 511 corresponding to the connecting shafts 512, and the connecting rods 511 are arranged in an L shape. A receiving groove 110 is provided at the bottom of the seat surface 100, and the openings of the receiving groove 110 are respectively located at the bottom of the seat surface 100 and the rear side of the seat surface 100. The two connecting shafts 512 are symmetrically arranged on two opposite side walls of the receiving groove 110, that is, the two connecting shafts 512 are fixedly connected to the seat surface 100 and the axis center lines are arranged to coincide, and the extending direction of the axis center lines is perpendicular to the flipping direction of the chair back 200. One end of the connecting rod 511 is sleeved on the connecting shaft 512 and is arranged to rotate, and the other end of the connecting rod 511 is fixedly connected to the bottom surface and the rear of the chair back 200.

[0041] That is, the chair back 200 is relatively perpendicular to the seat surface 100 in the initial state. When the chair back 200 flips over, it drives the connecting rod 511 to rotate around the connecting shaft 512 and flip backward and downward.

[0042] Reference Figure 2 and Figure 3 As shown, the limiting assembly includes a support plate 520, and a transmission groove is provided on the bottom surface of the seat surface 100, the transmission groove is connected to the receiving groove 110, and the transmission groove is opened by the bottom surface of the chair back 200. The support plate 520 is L-shaped during use and has a certain elasticity. The support plate 520 includes a horizontal end 522 and a vertical end 521, and the horizontal end 522 is vertically fixedly connected to the vertical end 521, that is, it is integrally arranged. The horizontal end 522 and the vertical end 521 are bent at the connection point, and the vertical end 521 is subjected to a certain pressure during the bending process. If the pressure is removed, the horizontal end 522 and the vertical end 521 will be restored at the connection point.

[0043] The support plate 520 is disposed between the two connecting rods 511, and its vertical end 521 is fixedly connected to the lower end surface of the chair back 200, and the horizontal end 522 passes through the receiving groove 110 and the transmission groove between the two connecting rods 511. When the chair back 200 is pressed to flip, the vertical end 521 is pressed to flip at the same time, so that the driving end slides along the transmission groove away from the inside of the receiving groove 110.

[0044] The limiting assembly further includes a guide rod 540, a spring 550 and two one-way racks 530 arranged opposite to each other. The two one-way racks 530 are slidably arranged in the transmission groove, and the sliding direction of the two one-way racks 530 is parallel to the axis of the connecting shaft 512. The guide rod 540 is fixedly connected to the opposite side walls of the accommodating groove 110, and the length extension direction of the guide rod 540 is parallel to the axis of the connecting shaft 512. The two one-way racks 530 are sleeved on the guide rod 540, and the two one-way racks 530 are slidably arranged along the length direction of the guide rod 540.

[0045] The spring 550 is sleeved on the guide rod 540 , and two ends of the spring 550 abut against opposite side walls of the two one-way racks 530 , so that the two one-way racks 530 abut against the two side walls of the receiving groove 110 under the action of the spring 550 .

[0046] Reference Figure 3 and Figure 4 As shown, the teeth on the one-way rack 530 are all arranged toward one end of the one-way rack 530, and the teeth on the one-way rack 530 are provided with an inclined guide surface 532 and a vertically arranged limit surface 531. The limit surface 531 on the same tooth is closer to the guide rod 540 relative to the guide surface 532, that is, the limit surface 531 is vertically arranged by the side wall of the rack, and the guide surface 532 is extended from the connection point of the limit surface 531 to the direction away from the guide rod 540.

[0047] The horizontal end 522 of the support plate 520 is provided with limiting teeth 570 meshing with the guide rack on both sides, and the teeth on the limiting teeth 570 are provided with an inclined guide surface 571 and a vertical surface 572. After the support plate 520 is installed on the seat surface 100, the guide surface 571 is closer to the guide rod 540 than the vertical surface 572.

[0048] Therefore, when the chair seat 100 is flipped over and positioned, the support plate 520 slides in the receiving groove 110 and also positions itself, driving the two racks to slide relative to each other, so that the racks and the limiting teeth 570 are meshed with each other, and the vertical surface 572 on the limiting teeth 570 abuts against the limiting surface 531 on the rack, thereby completing the limiting fixation of the support plate 520.

[0049] When the two racks are limited, the chair back 200 can be pushed to flip, thereby driving the support plate 520 to slide along the receiving groove 110, that is, between the two racks, so that the guide surface 571 contacts the guide surface 532, and the support plate 520 slides further. In this process, the adjustment and fixation of the flip angle of the seat surface 100 can be achieved without adjusting the racks.

[0050] Reference Figure 3 and Figure 4 As shown, two sets of positioning components 560 are provided, and the two sets of positioning components 560 are symmetrically arranged on both sides of the chair seat 100 .

[0051] The positioning assembly 560 includes a positioning shaft 564, a transmission sleeve 565, a chain plate 561 and an extension plate 562. A positioning groove 120 is provided on the bottom surface of the seat surface 100, and the positioning groove 120 is connected to the receiving groove 110. The positioning shaft 564 is disposed in the receiving groove 110, and the axial direction of the positioning shaft 564 is perpendicular to the axial direction of the guide rod 540. The transmission sleeve 565 is rotatably sleeved on the positioning shaft 564, the chain plate 561 is hingedly disposed with the extension plate 562, and one end of the chain plate 561 away from the extension plate 562 is fixedly connected to the transmission sleeve 565. One end of the extension plate 562 away from the chain plate 561 is fixedly connected with a pedal 563.

[0052] When the user pushes the chair back 200 to a certain angle, the user can pull the pedal 563 to drive the extension plate 562 to rotate at the hinge point of the chain plate 561, so that the extension plate 562 and the chain plate 561 are extended in a line, and the pedal 563 is placed on the ground for stepping on with both feet, that is, one foot steps on one pedal 563, so as to ensure the stability of the chair during use.

[0053] The transmission sleeve 565 is arranged as a cam, and the side wall of the transmission sleeve 565 abuts against the side wall of the rack. When the chain plate 561 is pulled to extend and move, the transmission sleeve 565 is driven to rotate with the positioning shaft 564. Thus, the circumferential side wall of the transmission sleeve 565 pushes the rack to slide relatively, thereby completing the limit fixation of the support plate 520.

[0054] This solves the problem that the center of gravity of the existing rehabilitation chair is unstable and easy to slide during the rehabilitation training of the patient who lies prone by bending and resetting the chair back 200 on the chair surface 100 to assist the patient.

[0055] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A rehabilitation chair, characterized in that: include: A chair surface (100) is used to provide support for a patient when sitting or lying down; A chair back (200), the chair back (200) is rotatably connected to the chair surface (100) and is used to provide back or chest support for the patient during use; Chair legs (300) are fixedly disposed below the chair seat (100) to support the chair seat (100); A connecting mechanism (500) includes a rotating assembly (510) for rotating a chair back (200) on a chair surface (100), a limiting assembly for fixing the chair back (200) on the chair surface (100) after rotation, and a positioning assembly (560) for flipping the chair back (200) and lifting the chair surface (100) to stabilize the two, wherein the positioning assembly (560) includes a chain plate (561) rotatably arranged on the chair back (200), one end of the chain plate (561) is hinged on the chair surface (100), and the other end of the chain plate (561) is connected to a pedal (563) for a user to step on.

2. A rehabilitation chair according to claim 1, characterized in that: The positioning assembly (560) comprises a positioning shaft (564), a transmission sleeve (565) and an extension plate (562); the positioning shaft (564) is fixedly connected to the bottom surface of the seat surface (100); the transmission sleeve (565) is sleeved on the positioning shaft (564) and rotatably arranged; one end of the chain plate (561) is fixedly connected to the transmission sleeve (565); the other end of the chain plate (561) is hinged to the extension plate (562); and the extension plate (562) is fixedly connected to the pedal (563).

3. A rehabilitation chair according to claim 2, characterized in that: The limiting component includes an L-shaped elastic support plate (520), and the support plate (520) includes a horizontal end (522) and a vertical end (521), the horizontal end (522) and the vertical end (521) are vertically fixedly connected, the horizontal end (522) and the vertical end (521) are bent at a connection point, the vertical end (521) is fixedly connected to the chair back (200), and the horizontal end (522) is slidably arranged on the bottom surface of the chair surface (100).

4. A rehabilitation chair according to claim 3, characterized in that: The limiting assembly also includes two one-way racks (530) arranged opposite to each other, the teeth on the one-way racks (530) are all arranged toward one end of the racks, the two one-way racks (530) arranged opposite to each other are slidably arranged on the bottom surface of the chair surface (100), the sliding direction of the two one-way racks (530) is perpendicular to the sliding direction of the horizontal end (522) of the support plate (520), the horizontal end (522) is arranged between the two one-way racks (530), and the side walls of the horizontal end (522) facing the two one-way racks (530) are provided with limiting teeth (570) for engaging the one-way racks (530), and the direction of the limiting teeth (570) is arranged opposite to the direction of the one-way racks (530).

5. A rehabilitation chair according to claim 4, characterized in that: The transmission sleeve (565) is arranged as a cam, and the transmission sleeve (565) is driven by the chain plate (561) to rotate and push the two one-way racks (530) to slide relative to each other, so that the one-way teeth are engaged with the limiting teeth (570) to limit the position.

6. A rehabilitation chair according to claim 4, characterized in that: The teeth on the limiting tooth (570) include an inclined guide surface (571) and a vertical surface (572); the teeth on the one-way rack (530) are provided with an inclined guide surface (532) and a vertical limiting surface (531); when the limiting tooth (570) is engaged with the one-way rack (530), the vertical surface (572) abuts against the limiting surface (531); when the support plate (520) extends and moves toward the chair seat (100), the guiding surface (571) contacts the guiding surface (532).

7. The rehabilitation chair according to claim 1, characterized in that: The rotating assembly (510) comprises a rotating shaft and a connecting rod (511), wherein the rotating shaft is fixedly connected to the chair surface (100), the connecting rod (511) is arranged in an L shape, one end of the connecting rod (511) is rotatably arranged on the rotating shaft, and the other end of the connecting rod (511) is fixedly connected to the chair back (200).

8. The rehabilitation chair according to claim 1, characterized in that: A headrest (400) is fixedly connected to the top end of the chair back (200), and the headrest (400) is provided with a groove (410) for placing the head.

9. The rehabilitation chair according to claim 1, characterized in that: The chair back (200) is also provided with two armrests (240) for pushing the chair back (200) to flip, and the two armrests (240) are symmetrically arranged on both sides of the chair back (200).

10. A rehabilitation chair according to claim 9, characterized in that: A rotating ball (230) is arranged at the end of the armrest (240); a limiting ball groove (210) and an armrest groove (220) connected to the limiting ball groove (210) are provided on the chair back (200); the rotating ball (230) is rotatably arranged in the limiting ball groove (210); and the armrest groove (220) is used for storing the armrest (240).

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