Transformable chair for examination of old people

Abstract

The utility model discloses a transformable chair for old people examination, which adopts a seat plate cushion capable of rotating up and down and an armrest seat capable of moving up and down to assist a patient in seating and standing up, when the patient sits, the seat plate cushion rotates upwards to the maximum angle, the armrest seat moves upwards to the maximum height, and the buttocks of the patient are tightly pressed on the seat plate cushion. When the patient sits on the seat, the hand or the forearm is pressed on the armrest seat, then the seat plate cushion slowly rotates downwards, and the armrest seat slowly moves downwards to guide the patient to gradually sit so as to ensure that the patient does not fall or fall down due to insufficient support. When the patient needs to stand up, the seat plate cushion rotates upwards slowly, and the armrest seat moves upwards slowly, so that auxiliary support is provided for the patient, and the patient is ensured to have enough strength to stand up safely. The mode can effectively prevent the patient from falling down and falling to cause injury to the patient. Meanwhile, the emergency rescue bed can be unfolded to be in a bed state and rapidly move in combination with the first universal wheels and the second universal wheels, so that the patient can be rapidly moved to be rescued in an emergency state.

Description

Technical Field

[0001] The utility model relates to a chair and medical auxiliary equipment, in particular to a deformable chair for examination of the elderly. Background Art

[0002] Blood tests account for the majority of hospital tests, and these are typically performed in the laboratory. The doctor sits outside the laboratory, while the patient sits outside. The two areas are separated by transparent glass, leaving only a single passageway and operating table for easy access. Stools are placed outside the laboratory for patients to sit on, making it easier for medical staff to operate. However, elderly people, due to their frailty, struggle to sit down or stand up, and generally require assistance. Otherwise, they risk falling onto the stool or the ground when sitting down, and falling when standing up due to insufficient strength, posing a serious safety hazard.

[0003] Because young people are generally busy, most elderly people still go to the hospital for treatment alone. Medical staff are located in the laboratory and cannot provide timely assistance. As a result, elderly people often fall and become unable to stand up on their own. Furthermore, due to their physical frailty, elderly people may experience dizziness, weakness in their limbs, or even fainting during blood draws, requiring emergency treatment. However, stools are commonly used outside laboratory rooms. This makes it very easy for patients to fall in these situations and is not convenient for quickly moving patients for emergency treatment.

[0004] Therefore, how to ensure that the elderly can sit or stand safely during the examination, prevent them from falling, and quickly move them for treatment in an emergency is a technical solution that urgently needs to be solved. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a deformable chair for examination of the elderly, which can assist the elderly in sitting down, standing up, and preventing them from falling.

[0006] To achieve the above-mentioned object, the present invention provides a transformable chair for elderly examination, comprising a bracket, a first universal wheel mounted on the bottom of the bracket, an armrest box, a seat plate, and a back plate mounted on the bracket, wherein two armrest boxes are mounted on both sides of the seat plate respectively;

[0007] A seat pad is installed above the seat plate, one end of the seat pad is hinged to the armrest boxes on both sides through a seat pad shaft, the seat pad is also hinged to the seat cylinder shaft of the seat cylinder, and the shell of the seat cylinder is directly or indirectly hinged to the bracket plate of the bracket;

[0008] A hollow cavity is provided in the armrest box, and an armrest electric cylinder is installed in the cavity. The armrest electric cylinder shaft of the armrest electric cylinder passes through the armrest box and is assembled and fixed with the armrest seat.

[0009] As a further improvement of the present invention, the side surfaces of the armrest seat and the armrest box are respectively assembled and fixed to the two ends of the elastic sleeve, and the elastic sleeve is elastic and blocks the gap between the armrest seat and the armrest box.

[0010] As a further improvement of the present invention, a power supply, a battery, a main control chip, and a wireless module are installed in the bracket. The invalid module communicates wirelessly with the remote control in the inspection room. The power supply is connected to the mains to introduce electrical energy. The battery stores the electrical energy sent by the power supply for backup. The main control chip is used to obtain the signal from the wireless module and analyze it to control the armrest electric cylinder and the seat cushion electric cylinder.

[0011] A foot switch is installed at the bottom of the bracket, a button switch is installed above the bracket, and a rocker switch is installed on the armrest box. There are two foot switches, two button switches, and two rocker switches respectively, which are located on both sides of the bracket or the armrest box; the signals of the foot switch, button switch, and rocker switch are all connected to the main control chip, and the foot switch and the button switch on one side control the extension of the armrest electric cylinder shaft and the seat cushion electric cylinder shaft, and the foot switch and the button switch on the other side control the shortening of the armrest electric cylinder shaft and the seat cushion electric cylinder shaft; the rocker switch controls the extension and shortening of the armrest electric cylinder shaft and the seat cushion electric cylinder shaft.

[0012] As a further improvement of the present invention, the chair back plate and the bracket or seat plate can be assembled relatively circumferentially so that the chair back plate can rotate within a horizontal or vertical range on the ground; the chair back plate is provided with a clamping slot, and the chair back plate is also circumferentially assembled with the wheel frame shaft, the wheel frame shaft is fixed on the wheel frame and a shaft sleeve is fixed on the wheel frame shaft, and the shaft sleeve is provided with a first locking groove and a second locking groove, and the wheel frame is equipped with a second universal wheel; one of the first locking groove and the second locking groove is engaged with the locking block, so that the wheel frame shaft cannot rotate circumferentially, and the locking block is engaged and slidably installed in the clamping slot; the locking block is assembled and fixed to one end of the locking shaft, and the other end of the locking shaft is fitted with a locking block spring, passes through the shaft plate and is assembled and fixed with the locking shaft ring, the locking shaft and the shaft plate can be axially slidably assembled, and the shaft plate is assembled and fixed to the chair back plate; the locking block spring applies an elastic force to the locking block to push the wheel frame shaft to keep the locking block engaged with the first locking groove or the second locking groove.

[0013] As a further improvement of the present invention, the two armrest boxes are assembled with the leg support plate through an axle lock assembly; a leg support plate shaft is installed and fixed on the leg support plate, and a first clutch head is installed on both ends of the leg support plate shaft. The first clutch head is inserted into the corresponding axle hole and can be assembled with it in a relative circular rotation. The axle hole is set on the armrest box.

[0014] As a further improvement of the present invention, the chair backboard is assembled with the two armrest boxes through an axis lock assembly, and a backboard shaft is installed and fixed on the chair backboard. The two ends of the backboard shaft respectively pass through the two sides of the chair backboard, and the two ends of the backboard shaft are respectively installed and fixed with a first clutch head. This first clutch head is installed into the corresponding axis hole on the armrest box and can be assembled with it in a circular rotation. The axis hole is set on the armrest box.

[0015] As a further improvement of the present invention, the shaft lock assembly includes a first clutch head, a second clutch head, a clutch shaft, and a switch plate, wherein the first clutch head and the second clutch head are respectively provided with a first clutch protrusion and a second clutch protrusion that engage with each other on their facing end surfaces;

[0016] The second clutch head is mounted on one end of the clutch shaft, and the other end of the clutch shaft is fitted with a clutch spring and then passes through the switch plate slot. A clutch shaft ring is mounted on the end of the clutch shaft that passes through the switch plate slot. The clutch shaft ring cannot pass through the switch plate slot. The switch plate slot is provided on and passes through the switch plate.

[0017] The second clutch head is engaged and axially slidably installed in the shaft hole, and the clutch spring applies an elastic force to the second clutch head to press the first clutch head, so that in the initial state, the first clutch head and the second clutch head are kept pressed together so that the first clutch head cannot rotate;

[0018] One end of the switch plate is assembled in a circumferentially rotatable manner with an axle seat through a switch plate shaft, and the axle seat is fixedly mounted on the armrest box.

[0019] As a further improvement of the present invention, there are two axis lock assemblies corresponding to the leg support plate or the chair back plate, and they form a pair. A linkage block is provided on the switch plate of each pair of axis lock assemblies, and a linkage groove is provided on the linkage block. One end of the linkage rod passes through the linkage groove, and the linkage rod is located at the side of the linkage groove close to the armrest box and is assembled with the first linkage rod ring. The first linkage rod ring cannot pass through the linkage groove. The other end of the linkage rod is assembled with one side of the linkage part. The two linkage rods of the same pair of axis lock assemblies are respectively assembled with both sides of the linkage part, and the linkage part can be assembled in a circular rotation through the linkage part shaft and the bracket.

[0020] As a further improvement of the present invention, a second linkage rod ring is provided at a position corresponding to the outer side of each linkage rod and the linkage member slot, and the second linkage rod ring cannot pass through the linkage member slot;

[0021] The other end of the linkage rod passes through the catheter and is assembled with one side of the linkage piece. The catheter is fixed on the bracket and the linkage rod can slide axially relative to the catheter.

[0022] As a further improvement of the present invention, a limit block is further provided on the armrest box, and the limit block is used to limit the leg support plate from rotating to a maximum angle of a state parallel to the seat plate.

[0023] The beneficial effects of the utility model are:

[0024] The utility model uses a seat pad that can rotate up and down and an armrest that moves up and down to assist patients in sitting and standing up. When the patient sits down, the seat pad rotates upward to the maximum angle and the armrest moves up to the maximum height. The patient's buttocks are pressed tightly against the seat pad, and the hands or forearms are pressed tightly against the armrests. Then the seat pad slowly rotates downward and the armrest slowly moves downward to guide the patient to gradually sit down, ensuring that the patient will not fall or trip due to insufficient support. When the patient needs to stand up, the seat pad slowly rotates upward and the armrest slowly moves upward, thereby providing auxiliary support to the patient to ensure that the patient has enough strength to stand up safely. This method can effectively prevent patients from falling or tripping, causing injury to the patient. At the same time, it can also be unfolded into a bed state, and combined with the first and second universal wheels to move quickly, so that patients can be quickly moved for rescue in an emergency, greatly shortening the time for patient transfer and effectively improving rescue efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1-Figure 2 It is a structural diagram of the utility model (chair state);

[0026] Figure 3-Figure 4 It is a structural diagram of the utility model (bed state);

[0027] Figure 5 This is a cross-sectional view of the utility model at the center plane where the axis of the lock shaft 520 is located (chair state);

[0028] Figure 6 yes Figure 5 Enlarged image of F1 in the middle;

[0029] Figure 7 yes Figure 5 Middle BB cross-section;

[0030] Figure 8 yes Figure 7 Enlarged image of F2 in the middle;

[0031] Figure 9 yes Figure 5 Middle AA section view;

[0032] Figure 10 yes Figure 9 Enlarged image of F3 in the middle;

[0033] Figure 11-13 This is a partial structural diagram of the utility model (chair state);

[0034] Figure 14 It is a structural diagram of the shaft lock assembly. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0036] See also Figures 1-14 The deformable chair of this embodiment includes a bracket 110, a first universal wheel 210 is installed at the bottom of the bracket 110, and an armrest box 120, a seat plate 130, and a seat back plate 140 are respectively installed on the bracket 110. There are two armrest boxes 120 and they are respectively installed on both sides of the seat plate 130. The seat back plate 140 is assembled with the two armrest boxes 120 through an axle lock assembly. The two armrest boxes 120 are also assembled with the leg support plate 410 through another axle lock assembly.

[0037] A back pad 430 is fixedly mounted on the back panel 140, and a seat pad 420 is mounted above the seat panel 130. The end of the seat pad 420 near the leg support plate 410 is hinged to the armrest boxes 120 on both sides via a seat pad shaft 421. The seat pad 420 is also hinged to the seat pad shaft 341 of the seat pad electric cylinder 340. The housing of the seat pad electric cylinder 340 is directly or indirectly hinged to the bracket plate 111 of the bracket 110. When the seat pad electric cylinder 340 is activated, the seat pad electric cylinder shaft 341 is driven to axially extend and contract, thereby driving the seat pad 420 to rotate around the seat pad shaft 421. Figure 5 When the seat pad shaft 421 rotates upward, it is in a state that can assist the patient to sit down, and after the patient's buttocks are pressed tightly against the seat pad 420, the seat pad electric cylinder shaft 341 retracts, thereby driving the seat pad 420 to reverse and reset until it is restored. Figure 5 This design can effectively prevent the buttocks from falling directly onto the seat pad 420 due to lack of effective support when sitting, thereby reducing the probability of injury to the patient's buttocks. In addition, when the patient stands up, the seat cushion electric cylinder shaft 341 extends and drives the seat pad 420 to rotate upward to provide auxiliary force to assist the patient in standing.

[0038] The armrest box 120 is provided with a hollow cavity 124, in which an armrest electric cylinder 350 is installed. The armrest electric cylinder shaft 351 of the armrest electric cylinder 350 passes through the armrest box 120 and is assembled and fixed to the armrest base 440. The armrest base 440 is used to support the patient's forearm. Figure 1In the initial state, the armrest seat 440 is at the position closest to the armrest box 120, and at this time, its function is no different from that of the armrest of an ordinary chair. When the patient needs to sit down, the armrest electric cylinder 350 drives the armrest electric cylinder shaft 351 to extend, thereby driving the armrest seat 440 to move up to the position farthest from the armrest box 120, and at this time, the seat pad 420 rotates upward to the maximum angle. After the patient's buttocks are pressed tightly on the seat pad 420 and the hands or forearms are pressed tightly on the armrest seat 440, the seat pad 420 reverses and resets, and the armrest electric cylinder 350 drives the armrest seat 440 to move toward the armrest box 120 to support the patient to slowly sit down, preventing the patient from falling on the deformed chair due to lack of effective support. When the patient needs to stand up, the seat pad 420 rotates upward to provide support force, and at the same time, the armrest electric cylinder 350 drives the armrest seat 440 to move upward to provide support force for standing up. Preferably, the four sides of the armrest seat 440 and the armrest box 120 are respectively assembled and fixed to the two ends of an elastic sleeve (not shown), so that the elastic sleeve is used to always close the gap between the armrest seat 440 and the armrest box 120 to avoid pinching.

[0039] In this embodiment, a power supply, battery, main control chip, and wireless module can be installed within the support 110. The disabled module wirelessly communicates with a remote control in the examination room, allowing medical staff in the main control room to control the transformable chair to assist patients in sitting and standing up. The power supply is connected to the mains electricity to draw in power, the battery stores the power supplied by the power supply for backup, and the main control chip receives and analyzes the signals from the wireless module to control the armrest cylinder 350 and the seat cylinder 340. In this embodiment, the wireless module can be a Bluetooth module, a 5G module, or the like, while the main control chip can be an MCU, PLC, CPU, industrial computer, or the like. This is a basic automation control solution, a mature existing technology, and can be directly adapted from existing solutions such as carts or wheelchairs with wireless control capabilities. In this embodiment, the transformable chair is a device that does not need to be moved for long periods of time, so connecting to the mains electricity is highly suitable. Of course, for ease of use, a wireless charging design can also be adopted to avoid power cords interfering with patient access. Specifically, a wireless charging module receiver is installed within the support, and a wireless charging module transmitter is installed on the ground to achieve wireless charging, effectively avoiding the impact of wiring on patient access. Of course, you can also set up a socket under the bracket, and the transformable chair is above the entire socket, and the power cord does not exceed the bracket, which can effectively avoid traffic interference caused by wiring.

[0040] In some embodiments, a foot switch 310 can be installed at the bottom of the bracket 110, a push button switch 320 can be installed above the bracket 110, and a rocker switch 330 can be installed on the armrest box 120. There are two foot switches 310, two push button switches 320, and two rocker switches 330, each located on either side of the bracket 110 or the armrest box. The signals of the foot switches 310, push button switches 320, and rocker switches 330 are all connected to the main control chip. The foot switch 310 and the push button switch 320 on one side control the extension of the armrest electric cylinder shaft 351 and the seat cushion electric cylinder shaft 341, while the foot switch 310 and the push button switch 320 on the other side control the contraction of the armrest electric cylinder shaft 351 and the seat cushion electric cylinder shaft 341. Pushing the rocker switch 330 forward controls the extension of the armrest electric cylinder shaft 351 and the seat cushion electric cylinder shaft 341, while pulling it backward controls the contraction of the armrest electric cylinder shaft 351 and the seat cushion electric cylinder shaft 341. This design is primarily designed to facilitate both patient and caregiver operation. The rocker switches 330 are located on both sides for patient convenience, while the foot switch 310 and push button switch 320 are for caregiver operation. This design primarily provides more ways to use the device, improving practicality. Priorities can be set in the control system, such as the remote control being the highest, the foot switch 310 and push button switch 320 being the next highest, and the rocker switch 330 being the last. This prevents command conflicts and prevents both medical staff and caregivers from managing and managing the device.

[0041] See also Figures 1-14 The backrest 140 is provided with a side block 141, a handle 142, and a slot 143. The backrest 140 is also assembled with the wheel frame shaft 151 so as to be rotatable in a circle. The wheel frame shaft 151 is fixed on the wheel frame 150 and a shaft sleeve 160 is fixed on the wheel frame shaft 151. The shaft sleeve 160 is provided with a first locking groove 161 and a second locking groove 162. The wheel frame 150 is provided with a second universal wheel 220; the first locking groove 161 and the second locking groove 1 62 is engaged with the locking block 510, thereby preventing the wheel frame shaft 151 from rotating in a circular manner. The locking block 510 is engaged and slidably installed in the locking groove 143. The locking block 510 is fixedly assembled with one end of the locking shaft 520. The other end of the locking shaft 520 is fitted with a locking block spring 540, passes through the shaft plate 530, and is then fixedly assembled with the locking shaft ring 521. The locking shaft 520 and the shaft plate 530 are axially slidable, and the shaft plate 530 is fixedly assembled with the chair back plate 140. The locking block spring 540 applies an elastic force to the locking block 510 toward the wheel frame shaft 151, thereby maintaining the locking block 510 engaged with the first locking groove 161 or the second locking groove 162. The handle 142 is used to facilitate the movement of the transformable chair or to facilitate pushing the transformable chair after it is converted into a bed.

[0042] See also Figure 1 、 Figure 5, it is in the chair state, at this time the wheel frame 150 is in the retracted state, and the locking block 510 is engaged with the first locking groove 161 to maintain the retracted state of the wheel frame 150. Figure 3-Figure 4 When the bed needs to be unfolded, the lock shaft 520 is driven by the lock ring 521 to squeeze the lock block spring 540 to drive the lock block 510 to gradually exit the first lock groove 161, and then the wheel frame 150 is rotated to unfold the wheel frame to Figure 3 In this position, the locking block 510 aligns with the second locking slot 162, releasing the locking collar 521. The locking block spring 540 drives the locking block 510 into the second locking slot 162, locking the wheel frame 150. The design of the wheel frame 150 and the second universal wheel 220 is primarily designed to address the fact that a bed supported solely by the first universal wheel 210 is prone to tilting or falling, potentially causing secondary injuries. The addition of the wheel frame 150 and the second universal wheel 220 makes the bed remarkably stable, indistinguishable from existing transfer beds, significantly improving patient safety.

[0043] See also Figures 1-14 A leg support plate shaft 411 is fixedly installed on the leg support plate 410, and a first clutch head 610 is respectively installed on both ends of the leg support plate shaft 411; the shaft lock assembly includes a first clutch head 610, a second clutch head 620, a clutch shaft 630, and a switch plate 640. The first clutch head 610 and the second clutch head 620 are respectively provided with a first clutch protrusion 611 and a second clutch protrusion 612 that engage with each other on the end surfaces facing each other. The first clutch head 610 can be rotatably installed in the shaft hole 122, and the shaft hole 122 is provided on the armrest box 120.

[0044] The second clutch head 620 is mounted on one end of the clutch shaft 630. The other end of the clutch shaft 630 is fitted with the clutch spring 601 and then passes through the switch plate slot 641. Clutch collars 631 are mounted on either side of the clutch shaft 630, preventing them from passing through the switch plate slot 641. The switch plate slot 641 is provided on and extends through the switch plate 640. The spacing between the two clutch collars 631 is preferably greater than the depth of the switch plate slot 641. This design allows relative sliding between the switch plate 640 and the clutch collars 631, thereby ensuring that the switch plate 640 effectively drives the axial movement of the clutch shaft 630.

[0045] The second clutch head 620 is engaged and axially slidably installed in the shaft hole 122, and the clutch spring 601 applies an elastic force to the second clutch head 620 to press the first clutch head 610, so that in the initial state, the first clutch head 610 and the second clutch head 620 remain pressed so that the leg support plate 410 cannot rotate.

[0046] One end of the switch plate 640 is rotatably assembled with the shaft seat 123 via the switch plate shaft 642, and the shaft seat 123 is fixed to the armrest box 120. When in use, the switch plate 640 is driven to rotate by moving the switch plate 640 away from the switch plate shaft 642, thereby driving the clutch shaft 630 to move axially away from the first clutch head 610, so that the first clutch head 610 and the second clutch head 620 are separated, and the leg support plate 410 can be rotated and adjusted, such as from Figure 1 Status adjusted to Figure 3 After the adjustment is completed, the switch plate 640 is released, and the clutch spring 540 pushes the second clutch head 620 to move toward the first clutch head 610 to restore the first clutch protrusion 611 and the second clutch protrusion 621 to engage with each other, thereby preventing the leg support plate 410 from rotating.

[0047] Preferably, for ease of use, there are two axis lock assemblies for controlling the relative rotation of the backrest plate 140 and the seat plate 130, and two axis lock assemblies for controlling the rotation of the leg support plate 410 relative to the seat plate 130, and each pair of them is provided with a linkage block 643 on the switch plate 640 of each pair of axis lock assemblies, and a linkage groove 6431 is provided on the linkage block 643. One end of the linkage rod 650 passes through the linkage groove 6431, and the linkage rod 650 is located on both sides of the linkage groove 6431 and is respectively connected to the first The linkage rod ring 651 is assembled, and the first linkage rod ring 651 cannot pass through the linkage groove 6431. The other end of the linkage rod 650 passes through the conduit 660 and is assembled with one side of the linkage part 670. The two linkage rods 650 of the same pair of shaft lock assemblies are respectively assembled with the two sides of the linkage part 670. The linkage part 670 can be assembled with the bracket 110 in a circular rotation through the linkage part shaft 672. The conduit 660 is installed and fixed on the bracket 110 and the linkage rod 650 can slide axially relative to the conduit 660.

[0048] When one of the switch plates 640 of the same pair of shaft lock assemblies is rotated away from the armrest box to open (requiring rotation of the leg support plate 410), this switch plate 640 drives the corresponding linkage rod 650 to move outward. This linkage rod 650 drives the linkage member 670 to rotate about the linkage member axis 672, thereby driving the other linkage rod 650 to move away from this linkage rod 650. The other linkage rod 650 drives the other switch plate 640 to rotate, thereby driving the other clutch shaft 630 to move. This allows both second clutch heads 620 to move away from or toward the corresponding first clutch head 610 simultaneously. This allows the leg support plate 410 to be quickly adjusted by operating only one switch plate, greatly facilitating use.

[0049] In some embodiments, two linkage member slots 671 are provided on both sides of the linkage member 670, and the two linkage rods 650 pass through the corresponding linkage member slots 671. Second linkage rod rings 652 are installed on both sides of the linkage member slots 671 of the linkage rod 650, and the second linkage rod rings 652 cannot pass through the linkage member slots 671. This design allows the linkage member 670 to be driven to rotate by one linkage rod 650, thereby driving the other linkage rod 650 to move axially.

[0050] The spacing between the two first linkage rings 651 is slightly greater than the thickness of the linkage block 643, so that when the linkage block 643 rotates, the two first linkage rings 651 can slide relative to the linkage block 643. The spacing between the two second linkage rod rings 652 is slightly greater than the depth of the corresponding linkage groove 671, so that when the linkage member 670 rotates, the second linkage rod rings 652 can slide relative to the linkage member 670.

[0051] In some embodiments, the linkage rod 650 may be elastic, so that when the linkage member 670 and the linkage block 643 rotate, the linkage rod 650 can adapt through its elastic deformation while maintaining axial push-pull displacement to drive the switch plate on the other side to rotate. In some embodiments, a second linkage rod ring 652 may be provided only at the location corresponding to the outer side of each linkage rod 650 and the linkage member slot 671 (the side of the linkage member 670 facing the corresponding switch plate 640), so that the linkage rod 650 can push the linkage member 670 to rotate and slide with the linkage member 670 to offset the vertical displacement ( Figure 10 ), and ensure that when the linkage member 670 rotates, it can push the other linkage rod 650 to move axially.

[0052] In some embodiments, there may be only one clutch collar 631, which is disposed on the end of the clutch shaft 631 away from the second clutch head 620. This ensures that the clutch shaft 630 is driven to move by the clutch collar 631 when the switch plate rotates, and after the switch plate 640 is released, the clutch spring drives the clutch shaft 630 and the second clutch head 620 to reset.

[0053] In some embodiments, a limit block 121 is further provided on the armrest box 120, and the limit block 121 is used to limit the leg support plate 410 from rotating to a maximum angle parallel to the seat plate 130. Figure 3-Figure 4 ), the end surface of the leg support plate 410 is in close contact with the limit block 121 to limit the maximum rotation angle, thereby prompting that the leg support plate has been rotated to a horizontal state during use.

[0054] Preferably, the leg support plate 410 is assembled and fixed with one end of the spring 401, and the other end of the spring 401 is assembled and fixed with the spring plate 112. The spring 401 can push the leg support plate 410 to Figure 5 Status turns to Figure 3 Status. And Figure 5 In the state, the spring 401 is in a compressed state to store elastic force. Once the second clutch head corresponding to the leg support plate 410 is separated from the first clutch head, the spring will drive the leg support plate 410 to rotate upward quickly ( Figure 5 until it reaches Figure 3 state, and then press the corresponding second clutch head and the first clutch head tightly.

[0055] A backrest shaft 144 is mounted and fixed to the backrest 140. The two ends of the backrest shaft 144 extend through the sides of the backrest 140. A first clutch head 610 is mounted and fixed to each end of the backrest shaft 144. The first clutch head 610 is inserted into and rotatably assembled with a corresponding shaft hole 122 in the armrest box 120. This shaft hole 122 corresponds to another shaft lock assembly. To adjust the angle of the backrest 140, the corresponding switch plate 640 is rotated outward to drive the second clutch head 620 to separate from the first clutch head 610. After the adjustment is complete, the switch plate 640 is released, and the switch spring 540 drives the second clutch head 620 back into engagement with the first clutch head 610.

[0056] In some embodiments, a sleep monitoring belt or a thin film piezoelectric sensor (not shown) can be installed in one or more of the seat pad 420, the armrest seat 440, and the back pad 430, and the signal of the sleep monitoring belt or the thin film piezoelectric sensor is connected to the main control chip. When the human body is pressed against the sleep monitoring belt, the sleep monitoring belt will obtain the human body's microcurrent and analyze it into physiological data such as heart rate and respiratory rate. In this way, on the one hand, it can detect whether there is someone sitting on the deformable chair, and on the other hand, it can detect the physiological parameters of the human body to determine whether the patient is in danger, so that timely assistance can be provided. For specific implementation solutions, please refer to the Chinese utility model patents with publication numbers CN221356850U and CN201921008913.2.

[0057] See also Figure 5 、 Figure 3 , need to Figure 5 Adjust to Figure 3 When the lock block 510 is first pulled out of the first lock slot 161, the wheel frame 150 is opened, and the lock block 510 is inserted into the second lock slot 162. Then the switch plate is rotated to open the second clutch head 620 corresponding to the seat back plate 140, and the seat back plate 140 is rotated to Figure 3 State, at this time, the second universal wheel 220 is pressed against the ground. Turn the other switch plate to rotate the leg support plate to Figure 3 The chair can be transformed into a bed in one go. The use process is very convenient and quick.

[0058] See also Figure 5When assistance with sitting down is needed, the seat cushion electric cylinder 340 drives the seat cushion electric cylinder 340 to extend, the seat pad 420 rotates upward to the maximum angle around the seat pad shaft 421, and the armrest electric cylinder 350 drives the armrest seat 440 to move up to the maximum displacement point. When the patient sits down, the buttocks are pressed against the seat cushion 420, and the two forearms are pressed against the armrest seats 440. Then, the seat cushion electric cylinder 340 drives the seat cushion 420 to gradually reverse and reset, and the armrest electric cylinder 350 drives the armrest seat 440 to gradually move downward and reset, thereby supporting the patient to slowly sit down. When the patient needs to stand up, the seat cushion electric cylinder 340 and the armrest electric cylinder 350 respectively drive the seat cushion 420 to gradually rotate upward and reset, and the armrest seat 440 to gradually move upward and reset, providing support, thereby assisting the patient in standing up.

[0059] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this application belongs.

[0060] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0061] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of this application, "plurality" means more than two, unless otherwise specifically defined.

[0062] In the present application, a circularly rotatable assembly is a connection assembly that can rotate relatively, such as an assembly through a bearing; a circumferentially rotatable and non-axially movable assembly is an assembly that can rotate relatively but cannot move axially, such as installing shaft clamps on both sides of the shaft and the mounting device to prevent the shaft from moving axially; a circumferentially rotatable and axially movable assembly is a movable assembly, such as an assembly in which the shaft passes through an shaft hole; an assembly that cannot rotate circularly and can move axially can be an assembly using spline grooves or spline fits.

[0063] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0064] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0065] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A deformable chair for examination of the elderly, characterized by: The seat comprises a bracket, a first universal wheel is installed at the bottom of the bracket, an armrest box, a seat plate and a seat back plate are installed on the bracket respectively, and there are two armrest boxes and they are installed on both sides of the seat plate respectively; A seat pad is installed above the seat plate, one end of the seat pad is hinged to the armrest boxes on both sides through a seat pad shaft, the seat pad is also hinged to the seat cylinder shaft of the seat cylinder, and the shell of the seat cylinder is directly or indirectly hinged to the bracket plate of the bracket; A hollow cavity is provided in the armrest box, and an armrest electric cylinder is installed in the cavity. The armrest electric cylinder shaft of the armrest electric cylinder passes through the armrest box and is assembled and fixed with the armrest seat.

2. The transformable chair according to claim 1, wherein: The side surfaces of the armrest seat and the armrest box are respectively assembled and fixed with the two ends of the elastic sleeve. The elastic sleeve is elastic and blocks the gap between the armrest seat and the armrest box.

3. The transformable chair according to claim 1 or 2, characterized in that: The power supply, battery, main control chip, and wireless module are installed in the bracket. The invalid module communicates wirelessly with the remote control in the inspection room. The power supply is connected to the mains to introduce electricity. The battery stores the electricity sent by the power supply for backup. The main control chip is used to obtain the signal from the wireless module and analyze it to control the armrest electric cylinder and seat cushion electric cylinder. A foot switch is installed at the bottom of the bracket, a button switch is installed above the bracket, and a rocker switch is installed on the armrest box. There are two foot switches, two button switches, and two rocker switches respectively, which are located on both sides of the bracket or the armrest box; the signals of the foot switch, button switch, and rocker switch are all connected to the main control chip, and the foot switch and the button switch on one side control the extension of the armrest electric cylinder shaft and the seat cushion electric cylinder shaft, and the foot switch and the button switch on the other side control the shortening of the armrest electric cylinder shaft and the seat cushion electric cylinder shaft; the rocker switch controls the extension and shortening of the armrest electric cylinder shaft and the seat cushion electric cylinder shaft.

4. The transformable chair according to claim 1 or 2, characterized in that: The backrest plate of the chair can be assembled with the bracket or the seat plate in a relative circular rotation so that the backrest plate can rotate within a horizontal or vertical range on the ground; the backrest plate is provided with a slot, and the backrest plate is also assembled with the wheel frame shaft for circular rotation, the wheel frame shaft is fixed on the wheel frame and a shaft sleeve is fixed on the wheel frame shaft, and the shaft sleeve is provided with a first locking groove and a second locking groove, and the wheel frame is equipped with a second universal wheel; one of the first locking groove and the second locking groove is engaged with the locking block, so that the wheel frame shaft cannot rotate circumferentially, and the locking block is engaged and slidably installed in the slot; the locking block is assembled and fixed to one end of the locking shaft, and the other end of the locking shaft is fitted with a locking block spring, passes through the shaft plate and is assembled and fixed with the locking shaft ring, the locking shaft and the shaft plate can be axially slidably assembled, and the shaft plate is assembled and fixed to the backrest plate; the locking block spring applies an elastic force to the locking block to push the wheel frame shaft to keep the locking block engaged with the first locking groove or the second locking groove.

5. The transformable chair according to claim 1, wherein: The two armrest boxes are assembled with the leg support plate through an axle lock assembly; a leg support plate shaft is fixedly installed on the leg support plate, and a first clutch head is respectively installed on both ends of the leg support plate shaft. The first clutch head is installed in the corresponding axle hole and can be assembled with it in a relative circular rotation. The axle hole is set on the armrest box.

6. The transformable chair according to claim 1, wherein: The chair back panel is assembled with the two armrest boxes through an axis lock assembly. A back panel shaft is installed and fixed on the chair back panel. The two ends of the back panel shaft respectively pass through the two sides of the chair back panel, and a first clutch head is installed and fixed on both ends of the back panel shaft. This first clutch head is installed into the corresponding axis hole on the armrest box and can be assembled with it in a circular rotation. The axis hole is set on the armrest box.

7. The transformable chair according to claim 5 or 6, characterized in that: The shaft lock assembly includes a first clutch head, a second clutch head, a clutch shaft, and a switch plate. The first clutch head and the second clutch head are respectively provided with a first clutch protrusion and a second clutch protrusion that engage with each other on their facing end surfaces. The second clutch head is mounted on one end of the clutch shaft, and the other end of the clutch shaft is fitted with a clutch spring and then passes through the switch plate slot. A clutch shaft ring is mounted on the end of the clutch shaft that passes through the switch plate slot. The clutch shaft ring cannot pass through the switch plate slot. The switch plate slot is provided on and passes through the switch plate. The second clutch head is engaged and axially slidably installed in the shaft hole, and the clutch spring applies an elastic force to the second clutch head to press the first clutch head, so that in the initial state, the first clutch head and the second clutch head are kept pressed together so that the first clutch head cannot rotate; One end of the switch plate is assembled in a circumferentially rotatable manner with an axle seat through a switch plate shaft, and the axle seat is fixedly mounted on the armrest box.

8. The transformable chair according to claim 7, wherein: There are two axis lock assemblies corresponding to the leg support plate or the seat back plate, and they form a pair. A linkage block is provided on the switch plate of each pair of axis lock assemblies, and a linkage groove is provided on the linkage block. One end of the linkage rod passes through the linkage groove, and the linkage rod is located at the side of the linkage groove close to the armrest box and is assembled with the first linkage rod ring. The first linkage rod ring cannot pass through the linkage groove. The other end of the linkage rod is assembled with one side of the linkage part. The two linkage rods of the same pair of axis lock assemblies are respectively assembled with both sides of the linkage part, and the linkage part can be assembled in a circular rotation through the linkage part shaft and the bracket.

9. The deformable chair according to claim 8, wherein: A second linkage rod ring is provided at a position corresponding to the outer side of each linkage rod and the linkage member slot, and the second linkage rod ring cannot pass through the linkage member slot; The other end of the linkage rod passes through the catheter and is assembled with one side of the linkage piece. The catheter is fixed on the bracket and the linkage rod can slide axially relative to the catheter.

10. The transformable chair according to claim 5, wherein: A limit block is also provided on the armrest box, and the limit block is used to limit the leg support plate from rotating to a maximum angle of a state parallel to the seat plate.

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