A shower chair for the elderly

Abstract

The application is suitable for the technical field of daily necessities, and provides an old people nursing shower chair, which comprises a chair body, a roller, a guide roller, a driving belt and a clamping piece, the chair body comprises a seat, a backrest and an armrest which are installed on the seat, the old people nursing shower chair further comprises an auxiliary assembly, the auxiliary assembly comprises a first pushing body, a second pushing body and a transmission mechanism which is connected between each armrest and the adjacent first pushing body and second pushing body, and the transmission mechanism comprises a driving arm, a first connecting rod, a second connecting rod, a rack and a gear, the chair body, the roller, the guide roller, the driving belt and the clamping piece are arranged, the shower nozzle is fixed through the clamping piece, the driving belt drives the clamping piece to move along the track of the driving belt, the clamping piece drives the shower nozzle to move around the door-shaped track, so that the body can be fully washed, and convenience is brought, the auxiliary assembly is arranged, and the first pushing body and the second pushing body are driven to move through the transmission mechanism when the old people support the armrests, so that standing up or sitting down is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of daily necessities technology, and in particular relates to a shower chair for elderly care. Background Technology

[0002] As people age, various bodily functions decline. Combined with the challenging bathroom environment, accidents involving falls and falls among the elderly are common. Furthermore, physiological limitations make showering alone particularly difficult for seniors with mobility issues. Additionally, patients who are unable to stand for extended periods often require the assistance of a shower chair.

[0003] When elderly people sit in their existing shower chairs and use the shower head to shower, there are two main problems. First, if the shower head is placed on the shower holder, it is positioned too high, making it inconvenient for them to reach while sitting in the shower chair. They also cannot adjust the position or angle of the shower. Second, if they hold the shower head themselves, their arms are generally not very flexible due to their age. They may not be able to raise their arms, move them freely, or hold them for extended periods. This can lead to incomplete rinsing or fatigue. Summary of the Invention

[0004] This invention provides a shower chair for elderly care, which aims to solve the above-mentioned problems.

[0005] This invention is implemented as follows: a shower chair for elderly care, comprising:

[0006] The chair body includes a seat, a backrest and armrests mounted on the seat;

[0007] Two symmetrically arranged rollers are located at the end of the seat away from the backrest, and a first stepper motor for driving the rollers to rotate is fixed on the seat.

[0008] Two guide rollers are symmetrically arranged on the backrest at the end away from the seat, and the guide rollers are rotatably connected to the backrest.

[0009] A drive belt is connected between the winding roller and the guide roller. The two ends of the drive belt are respectively wound around the two winding rollers and pass around the two guide rollers to form a gate-shaped trajectory.

[0010] A clamp fixed to the outer wall of the drive belt for clamping a shower head.

[0011] Preferably, the clamping member includes:

[0012] A first arc-shaped plate fixedly connected to the drive belt, wherein the central angle of the first arc-shaped plate is greater than 180 degrees;

[0013] A second arc-shaped plate is rotatably installed at one end of the first arc-shaped plate. The second arc-shaped plate can be closed with the first arc-shaped plate to form a closed ring. A torsion spring is connected between the second arc-shaped plate and the first arc-shaped plate. In its natural state, the force exerted by the torsion spring on the second arc-shaped plate causes it to rotate until one end moves away from the first arc-shaped plate and the other end enters the first arc-shaped plate.

[0014] Preferably, the bottom end of the support leg of the seat is rotatably mounted with a movable wheel, and a locking element for locking the movable wheel is installed on the support leg.

[0015] Preferably, the locking component includes an electric push rod and a fixed wheel plate. The electric push rod is fixed to the support leg, and the telescopic end of the electric push rod is fixed with a fixed wheel plate to abut against the moving wheel and fix it in place.

[0016] Preferably, it further includes an auxiliary component, the auxiliary component comprising:

[0017] Two first push bodies are symmetrically rotated and mounted on the seat. The seat has through slots for the first push bodies to rotate. The cross-section of the two first push bodies is fan-shaped. The rotation centers of the two first push bodies are far apart and coincide with the center of the fan shape. The upper surfaces of the two first push bodies are flush with the upper surface of the seat.

[0018] Two second push bodies are symmetrically rotated and installed on the backrest. The backrest has through slots for the second push bodies to rotate. The cross-section of the two second push bodies is fan-shaped. The rotation centers of the two second push bodies are far apart and coincide with the center of the fan shape. The inner surfaces of the two second push bodies are flush with the contact surface between the backrest and the body.

[0019] A transmission mechanism is connected between each armrest and the adjacent first and second push bodies. A vertical rod is fixed on the lower surface of the armrest, and the bottom end of the vertical rod movably passes through the seat and is provided with a protruding ring.

[0020] Preferably, the transmission mechanism includes:

[0021] A drive arm is fixedly connected to the outer wall of the first push body. The end of the drive arm away from the first push body extends to the outer side of the seat. The seat is provided with a motion groove for the drive arm to move downward. The top of the motion groove is closed at the bottom opening.

[0022] A first link is hinged at one end to the handrail, and the other end of the first link is hinged to the end of the drive arm away from the first push body;

[0023] A second connecting rod is hinged to the armrest at one end, and a rack is hinged to the other end of the second connecting rod. The rack passes vertically through the backrest and is slidably connected to it. A gear that meshes with the rack is fixed on the rotating shaft of the second pusher.

[0024] Preferably, a plurality of washboards are installed on the inner side of the second pusher for washing the back, and a third stepper motor for driving the washboards to rotate is installed inside the second pusher.

[0025] Preferably, the upper part of the backrest is provided with a flexible headrest, and earmuffs for covering the ears during showering are provided on both sides of the headrest on the backrest. The earmuffs are fixedly installed on a movable plate, the movable plate is slidably installed on the backrest, and a drive mechanism for moving the earmuffs toward the headrest is installed on the backrest.

[0026] Preferably, the drive mechanism includes:

[0027] A support plate is provided inside the headrest, and a drive rod is fixed to the lower surface of the support plate;

[0028] A rotating sleeve is fitted onto the drive rod, the rotating sleeve is rotatably mounted on the backrest, a compression spring is fitted onto the drive rod between the rotating sleeve and the support plate, a protruding pin is provided on the outer side wall of the drive rod, and a spiral groove is provided on the inner side wall of the rotating sleeve for the protruding pin to engage and move.

[0029] A turntable fixed to a rotating sleeve, wherein a tension spring is connected between the edge of the turntable and the adjacent movable plate.

[0030] Preferably, a washing mechanism is provided on the backrest above the headrest, the washing mechanism comprising:

[0031] A fixing rod is fixedly connected to the backrest at one end, and the other end of the fixing rod extends to the top of the headrest and is fixedly installed with a second stepper motor.

[0032] The kneading plate is eccentrically fixed to the output shaft of the second stepper motor. The kneading plate is in the shape of an upwardly convex arc, and the lower surface of the kneading plate is provided with multiple finger rods.

[0033] Compared with the prior art, the embodiments of this application have the following main advantages:

[0034] The elderly care shower chair provided by this invention consists of a chair body, a winding roller, a guide roller, a drive belt, and a clamping device. The shower head is fixed by the clamping device and faces the elderly person's body. A stepper motor drives one winding roller to rotate and wind up the drive belt, while another stepper motor drives another winding roller to unwind the drive belt. Through repeated operation, the drive belt causes the clamping device to move along the trajectory of the drive belt, and the clamping device causes the shower head to move around a gate-shaped trajectory, thereby enabling thorough rinsing of the body and providing convenience. Attached Figure Description

[0035] Figure 1 This is a structural schematic diagram of a shower chair for elderly care provided by the present invention;

[0036] Figure 2This is a schematic diagram of the installation of the drive belt in a shower chair for elderly care provided by the present invention;

[0037] Figure 3 This is a schematic diagram of the structure of a clamping component in a shower chair for elderly care provided by the present invention;

[0038] Figure 4 This is a schematic diagram of the structure of an auxiliary component in a shower chair for elderly care provided by the present invention;

[0039] Figure 5 yes Figure 1 Enlarged view of point A in the image;

[0040] Figure 6 This is a schematic diagram of the drive mechanism in a shower chair for elderly care provided by the present invention;

[0041] Figure 7 This is a schematic diagram showing the positions of the turntable, rotating sleeve, and support plate in a shower chair for elderly care provided by the present invention;

[0042] Figure 8 This is a schematic diagram of the internal structure of the rotating sleeve in a shower chair for elderly care provided by the present invention.

[0043] Figure reference numerals: 1. Chair body; 2. Casters; 3. Fixed wheel plate; 4. Electric push rod; 5. First push body; 6. First stepper motor; 7. Winding roller; 8. Drive belt; 9. First connecting rod; 10. Armrest; 11. Drive arm; 12. Vertical rod; 13. Clamping component; 131. First arc plate; 132. Second arc plate; 14. Second connecting rod; 15. Washboard; 16. Headrest; 17. Movable plate; 18. Kneading board; 19. Second stepper motor; 20. Fixed rod; 21. Guide roller; 22. Second push body; 23. Rack; 24. Gear; 25. Tension spring; 26. Support plate; 27. Turntable; 28. Rotating sleeve; 29. ​​Drive rod; 30. Compression spring; 31. Spiral groove; 32. Protruding pin; 33. Earcups. Detailed Implementation

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0045] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0046] This invention provides a shower chair for elderly care, such as... Figures 1-8 As shown, it includes:

[0047] The chair body 1 includes a seat, a backrest and armrests 10 mounted on the seat;

[0048] Two symmetrically arranged winding rollers 7 are located at the end of the seat away from the backrest. A first step motor 6 for driving the winding rollers 7 to rotate is fixed on the seat. It can be fixed by bolts, and the output shaft of the first step motor 6 can be welded to the winding rollers 7.

[0049] Two guide rollers 21 are symmetrically arranged on the backrest at the end away from the seat, and the guide rollers 21 are rotatably connected to the backrest.

[0050] A drive belt 8 is connected between the winding roller 7 and the guide roller 21. The two ends of the drive belt 8 are respectively wound around the two winding rollers 7 and pass around the two guide rollers 21 to form a gate-shaped track. The drive belt 8 is made of flexible material such as rubber.

[0051] The clamp 13, fixed to the outer wall of the drive belt 8, is used to clamp the shower head;

[0052] As elderly people age, their arms are generally not very flexible. When using a shower head, they may encounter problems such as being unable to raise their arms, move them freely, or maintain their arms for extended periods. This makes it difficult for them to hold the shower head for long or move it freely, resulting in incomplete rinsing or fatigue. To address this, the shower head is fixed in place by the clamp 13, facing the elderly person's body. One stepper motor drives one winding roller 7 to rotate and wind up the drive belt 8, while another stepper motor drives another winding roller 7 to unwind the drive belt 8. Through repeated operation, the drive belt 8 causes the clamp 13 to move along the trajectory of the drive belt 8. The clamp 13 then causes the shower head to move around a gate-shaped trajectory, thus enabling thorough rinsing of the body and providing convenience for the elderly.

[0053] The clamping component 13 includes:

[0054] The first arc-shaped plate 131, which is fixedly connected to the drive belt 8, can be fixed by screws, glue, etc., and the central angle corresponding to the first arc-shaped plate 131 is greater than 180 degrees.

[0055] A second arc plate 132 is rotatably mounted on one end of the first arc plate 131. The second arc plate 132 can form a closed ring with the first arc plate 131. A torsion spring is connected between the second arc plate 132 and the first arc plate 131. In its natural state, the force exerted by the torsion spring on the second arc plate 132 causes it to rotate until one end moves away from the first arc plate 131 and the other end enters the first arc plate 131.

[0056] When the shower head is inserted into the first arc plate 131 through the opening between the first arc plate 131 and the second arc plate 132, the shower head pushes the other end of the second arc plate 132 to rotate and form a closed ring with the first arc plate 131, surrounding the shower head. Since the diameter of the end of the shower head gradually becomes thicker and is larger than the size of the notch in the first arc plate 131, and under the force of gravity, the shower head will not separate from the first arc plate 131, thus completing the clamping process.

[0057] Specifically, a movable wheel 2 can be rotatably installed at the bottom of the support leg of the seat for easy movement. Furthermore, in order to prevent the chair body 1 from moving during showering and improve safety, a locking component for locking the movable wheel 2 is installed on the support leg. The locking component includes an electric push rod 4 and a fixed wheel plate 3. The electric push rod 4 is fixed to the support leg by screws. The telescopic end of the electric push rod 4 is fixed with the fixed wheel plate 3, which can be fixed by screws to press against the movable wheel 2 and fix it. When moving, the electric push rod 4 shortens and drives the fixed wheel plate 3 to separate from the movable wheel 2. When locking, the electric push rod 4 extends and drives the fixed wheel plate 3 to press against the movable wheel 2. Buttons, rechargeable batteries, etc. can be set on the seat to control the electric push rod 4 and other electrical components.

[0058] In this embodiment, the elderly care shower chair further includes an auxiliary component to help the elderly sit down or stand up. The auxiliary component includes:

[0059] Two first push bodies 5 are symmetrically rotated and installed on the seat. The seat has through slots for the first push bodies 5 to rotate. The cross-section of the two first push bodies 5 is fan-shaped. The rotation centers of the two first push bodies 5 are far apart and coincide with the center of the fan shape. The upper surfaces of the two first push bodies 5 are flush with the upper surface of the seat.

[0060] Two second push bodies 22 are symmetrically rotated and installed on the backrest. The backrest has through slots for the second push bodies 22 to rotate. The cross-section of the two second push bodies 22 is fan-shaped. The rotation centers of the two second push bodies 22 are far apart and coincide with the center of the fan shape. The inner surfaces of the two second push bodies 22 are flush with the contact surface between the backrest and the body.

[0061] A transmission mechanism connects each armrest 10 to the adjacent first push body 5 and second push body 22. A vertical rod 12 is fixed to the lower surface of each armrest 10. The bottom end of the vertical rod 12 movably passes through the seat and has a protruding ring to prevent the vertical rod 12 from detaching from the seat. When the armrest 10 moves downwards, the transmission mechanism drives the two first push bodies 5 to rotate upwards out of the seat, simultaneously driving the two second push bodies 22 to rotate towards the side of the seat to create the backrest. Specifically, when an elderly person gets up, they press down on the armrest 10 with their hand or elbow, causing the armrest 10 to... During the downward movement, the two first push bodies 5 rotate upward to push the elderly person's buttocks, and the two second push bodies 22 rotate out of the backrest to push the elderly person's back, making it easier for the elderly person to get up. When the elderly person sits down, they also use their hands or elbows to press down on the armrest 10, causing the armrest 10 to move downward. The first push body 5, which is higher than the seat surface, first supports the elderly person's buttocks, and the second push body 22, which is located outside the backrest, first supports the elderly person's back, so that the elderly person can sit down safely. After releasing the armrest 10, the first push body 5 and the second push body 22 rotate back to their original positions under gravity, and drive the armrest 10 to return to its original position through the transmission mechanism.

[0062] Furthermore, the transmission mechanism includes:

[0063] A drive arm 11 is fixedly connected to the outer wall of the first push body 5. One end of the drive arm 11 away from the first push body 5 extends to the outer side of the seat. The seat is provided with a motion groove for the drive arm 11 to move downward. The top of the motion groove is closed at the bottom opening.

[0064] One end of the first connecting rod 9 is hinged to the handrail 10, and the other end of the first connecting rod 9 is hinged to the end of the drive arm 11 away from the first push body 5.

[0065] A second connecting rod 14 is hinged to the armrest 10 at one end, and a rack 23 is hinged to the other end of the second connecting rod 14. The rack 23 passes vertically through the backrest and is slidably connected to it. A gear 24 that meshes with the rack 23 is fixed on the rotating shaft of the second push body 22.

[0066] It is understandable that when the handrail 10 moves downward, the first link 9 presses down the drive arm 11, the drive arm 11 drives the first push body 5 to rotate, and at the same time the handrail 10 drives the rack 23 to slide through the second link 14, and the rack 23 drives the second push body 22 to rotate through the gear 24.

[0067] Furthermore, multiple washboards 15 are installed on the inner side of the second push body 22 for washing the back of the elderly. A third stepper motor for driving the washboards 15 to rotate can be installed inside the second push body 22 to avoid the problem that the elderly have a small range of arm movement and cannot wash their backs.

[0068] In a specific implementation, the upper part of the backrest is provided with a flexible headrest 16, such as sponge or other flexible material;

[0069] Preferably, the backrest is provided with earmuffs 33 on both sides of the headrest 16 for covering the ears during showering to prevent water from entering the ears. The earmuffs 33 are fixedly installed on the movable plate 17, which is slidably installed on the backrest. The movable plate 17 can be slidably installed by a slider and a groove. The backrest is provided with a drive mechanism for moving the earmuffs 33 toward the headrest 16.

[0070] In this embodiment, the driving mechanism includes:

[0071] A support plate 26 is provided inside the headrest 16, and a drive rod 29 is fixed to the lower surface of the support plate 26, which can be fixed by welding.

[0072] A rotating sleeve 28 is sleeved on the drive rod 29. The rotating sleeve 28 is rotatably mounted on the backrest and can be rotatably mounted by bearings. A compression spring 30 is sleeved on the drive rod 29 between the rotating sleeve 28 and the support plate 26. A protruding pin 32 is provided on the outer side wall of the drive rod 29. A spiral groove 31 is provided on the inner side wall of the rotating sleeve 28 for the protruding pin 32 to be engaged and moved.

[0073] A turntable 27 is fixed on the rotating sleeve 28. A tension spring 25 is connected between the edge of the turntable 27 and the adjacent movable plate 17. The two ends of the tension spring 25 can be hooked to the edges of the movable plate 17 and the turntable 27, respectively.

[0074] When the elderly person's head rests against the headrest 16, pressure is applied to the support plate 26. The support plate 26 drives the turntable 27 to rotate through the cooperation of the protrusion 32 and the spiral groove 31. The turntable 27 pulls the movable plate 17 closer to the headrest 16 through the tension spring 25. The movable plate 17 drives the earmuff 33 to cover the ears to prevent water from entering the elderly person's ears when showering.

[0075] Furthermore, a shampooing mechanism for washing hair is provided on the backrest above the headrest 16, the shampooing mechanism including:

[0076] A fixing rod 20, one end of which is fixedly connected to the backrest, can be fixed by welding. The other end of the fixing rod 20 extends above the headrest 16 and is fixedly installed with a second stepper motor 19, which can be fixed by bolts.

[0077] The kneading plate 18 is eccentrically fixed on the output shaft of the second stepper motor 19. The kneading plate 18 is in the shape of an upwardly convex arc. The lower surface of the kneading plate 18 is provided with multiple finger rods. The kneading plate 18 and the finger rods can be made of rubber. The width of the kneading plate 18 is smaller than the width of the head or the kneading plate 18 has a hollow design.

[0078] When washing hair, the second stepper motor 19 drives the kneading plate 18 to rotate, and the kneading plate 18 rubs the head to make it cleaner.

[0079] In summary, this invention provides a shower chair for elderly care, the working principle of which is as follows:

[0080] When an elderly person sits down to shower, they press down on the armrest 10 with their hand or elbow, causing the armrest 10 to move downwards. The first pusher 5, higher than the seat surface, supports the elderly person's buttocks, while the second pusher 22, located outside the backrest, supports the elderly person's back, allowing them to sit safely. The shower head is fixed in place by the clamp 13, facing the elderly person's body. One stepper motor drives one winding roller 7 to rotate and wind up the drive belt 8, while another stepper motor drives another winding roller 7 to unwind the drive belt 8. Through repeated operation, the drive belt 8 causes the clamp 13 to move along the trajectory of the drive belt 8. The clamp 13 then causes the shower head to move around a door-shaped trajectory. When the elderly person's head rests against the headrest 16... Pressure is applied to the support plate 26. The support plate 26 drives the turntable 27 to rotate through the engagement of the protrusion 32 and the spiral groove 31. The turntable 27 pulls the movable plate 17 closer to the headrest 16 through the tension spring 25. The movable plate 17 drives the earmuffs 33 to cover the ears and prevent water from entering the ears of the elderly during showering. When it is necessary to wash the hair, the second stepper motor 19 drives the kneading plate 18 to rotate. The kneading plate 18 rubs the head to make it cleaner. After showering, when the elderly need to get up, they can press down on the armrest 10 with their hands or elbows to make the armrest 10 move downward. The two first push bodies 5 rotate upward to push the elderly's buttocks, and the two second push bodies 22 rotate out of the backrest to push the elderly's back, making it easier for the elderly to get up.

[0081] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0082] It should be understood that the disclosed apparatus can be implemented in other ways, as illustrated in the embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0083] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0084] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A shower chair for elderly care, comprising a chair body, the chair body including a seat, a backrest mounted on the seat, and armrests, characterized in that, Also includes: Two symmetrically arranged rollers are located at the end of the seat away from the backrest, and a first stepper motor for driving the rollers to rotate is fixed on the seat. Two guide rollers are symmetrically arranged on the backrest at the end away from the seat, and the guide rollers are rotatably connected to the backrest. A drive belt is connected between the winding roller and the guide roller. The two ends of the drive belt are respectively wound around the two winding rollers and pass around the two guide rollers to form a gate-shaped trajectory. A clamping component fixed to the outer wall of the drive belt for clamping a shower head; It also includes auxiliary components, which include: Two first push bodies are symmetrically rotated and installed on the seat. The seat has through slots for the first push bodies to rotate. The cross-section of the two first push bodies is fan-shaped. The rotation centers of the two first push bodies are far apart and coincide with the center of the fan shape. The upper surfaces of the two first push bodies are flush with the upper surface of the seat. Two second push bodies are symmetrically rotated and installed on the backrest. The backrest has a through groove for the second push bodies to rotate. The cross-section of the two second push bodies is fan-shaped. The rotation centers of the two second push bodies are far apart and coincide with the center of the fan shape. The inner surfaces of the two second push bodies are flush with the contact surface between the backrest and the body. A transmission mechanism is connected between each armrest and the adjacent first and second push bodies. A vertical rod is fixed on the lower surface of the armrest, and the bottom end of the vertical rod moves through the seat and is provided with a protruding ring. The transmission mechanism includes: A drive arm is fixedly connected to the outer wall of the first push body. The end of the drive arm away from the first push body extends to the outer side of the seat. A motion groove is provided on the seat for the drive arm to move downward. The top of the motion groove is closed at the bottom opening. One end of the first link is hinged to the handrail, and the other end of the first link is hinged to the end of the drive arm away from the first push body; A second connecting rod is hinged to the armrest at one end, and a rack is hinged to the other end of the second connecting rod. The rack passes vertically through the backrest and is slidably connected to it. A gear that meshes with the rack is fixed on the rotating shaft of the second pusher.

2. The elderly care shower chair as described in claim 1, characterized in that, The clamping component includes: A first arc-shaped plate fixedly connected to the drive belt, wherein the central angle of the first arc-shaped plate is greater than 180 degrees; A second arc-shaped plate is rotatably installed at one end of the first arc-shaped plate. The second arc-shaped plate can be closed with the first arc-shaped plate to form a closed ring. A torsion spring is connected between the second arc-shaped plate and the first arc-shaped plate. In its natural state, the force exerted by the torsion spring on the second arc-shaped plate causes it to rotate until one end moves away from the first arc-shaped plate and the other end enters the first arc-shaped plate.

3. The elderly care shower chair as described in claim 1, characterized in that, The seat has a movable wheel rotatably mounted on the bottom end of its support leg, and a locking element for locking the movable wheel is installed on the support leg.

4. The elderly care shower chair as described in claim 3, characterized in that, The locking component includes an electric push rod and a fixed wheel plate. The electric push rod is fixed to the support leg, and the telescopic end of the electric push rod is fixed with a fixed wheel plate to abut against the moving wheel and fix it in place.

5. The elderly care shower chair as described in claim 1, characterized in that, Multiple washboards are installed on the inner side of the second pusher for washing the back, and a third stepper motor is installed inside the second pusher to drive the washboards to rotate.

6. The elderly care shower chair as described in claim 1, characterized in that, The upper part of the backrest is provided with a flexible headrest, and earmuffs for covering the ears during showering are provided on both sides of the headrest on the backrest. The earmuffs are fixedly installed on a movable plate, and the movable plate is slidably installed on the backrest. A drive mechanism for moving the earmuffs toward the headrest is installed on the backrest.

7. The elderly care shower chair as described in claim 6, characterized in that, The drive mechanism includes: A support plate is provided inside the headrest, and a drive rod is fixed to the lower surface of the support plate; A rotating sleeve is fitted onto the drive rod, the rotating sleeve is rotatably mounted on the backrest, a compression spring is fitted onto the drive rod between the rotating sleeve and the support plate, a protruding pin is provided on the outer side wall of the drive rod, and a spiral groove is provided on the inner side wall of the rotating sleeve for the protruding pin to engage and move. A turntable fixed to a rotating sleeve, wherein a tension spring is connected between the edge of the turntable and the adjacent movable plate.

8. The elderly care shower chair as described in claim 6, characterized in that, The backrest is equipped with a washing mechanism located above the headrest, the washing mechanism comprising: A fixing rod is fixedly connected to the backrest at one end, and the other end of the fixing rod extends to the top of the headrest and is fixedly installed with a second stepper motor. The kneading plate is eccentrically fixed to the output shaft of the second stepper motor. The kneading plate is in the shape of an upwardly convex arc, and the lower surface of the kneading plate is provided with multiple finger rods.

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