Portable hand-held mobile dental chair comprehensive treatment table

Abstract

This invention discloses a portable, handheld, mobile dental chair, comprising a support frame with a backrest rotatably mounted on its top. A first guide frame is rotatably mounted inside the support frame, with a first roller on its top to contact the back of the backrest. The first guide frame is connected to a first lead screw mechanism via a first connecting rod. A seat plate is rotatably mounted on the top of the support frame and in front of the backrest. A second guide frame is rotatably mounted inside the support frame, with a second roller on its top to contact the back of the seat. The second guide frame is connected to a second lead screw mechanism via a second connecting rod. A leg plate is rotatably connected to the front of the seat plate, with a third roller on the front of the second guide frame to contact the back of the leg plate. The front of the leg plate is rotatably connected to a footrest. A pulley is located at the end of the support frame, and support legs are located on its bottom. A combined air-water-negative pressure supply box is located inside the support frame. This invention, through a double lead screw mechanism in conjunction with the guide frame and rollers, allows for arbitrary angle adjustment of the backrest, seat, and leg plate, and utilizes the lead screw self-locking principle to ensure stable support at each angle. Meanwhile, the integrated supply unit eliminates the need for external air and water sources for the treatment table, facilitating independent and reliable diagnostic and treatment procedures in non-medical environments. This treatment table is compact and highly portable, significantly improving the applicability and safety of home-based medical services.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a portable, handheld mobile dental chair / treatment table. Background Technology

[0002] A dental chair is an essential piece of medical equipment for dentists. It integrates air, water, and electricity. Currently, commonly used dental chairs are relatively large and must be transported and installed by the manufacturer. They also need to be installed in conjunction with air and water pipes. Because these dental chairs have multi-functional control devices, dentists can perform functions such as air jetting, water spraying, and water suction without stopping the instrument during treatment.

[0003] When faced with patients who have difficulty moving around, such as elderly patients, people with disabilities, patients in the postoperative recovery period, or patients who are unable to move on their own due to serious illness, these patients often delay treatment because they cannot go to the hospital for treatment on their own. Although some patients' families hope to solve the problem of access to medical care by making an appointment for home visits. Therefore, in order to enable deployment and use in non-medical environments such as patients' homes, nursing homes, or temporary community clinics, a portable dental chair treatment unit has emerged on the market. The chair back, chair pedals, and chair legs are folded and stored on the outside of a box with wheels. Then, the air pump, water pump, and drainage pump are integrated into the box. The portable treatment unit is moved to a non-medical environment by dragging the wheels. The back and chair legs are then unfolded and the patient lies on the chair back for treatment. While the aforementioned portable dental chairs can be stored and moved for portability, the backrests and legs often have only one fixed angle, making it impossible to adjust the angle according to the patient's requirements or provide stable support. Furthermore, existing portable dental treatment units often sacrifice larger components such as the treatment chair and instrument tray to reduce size and achieve portability, resulting in reduced functionality, poor treatment comfort, and poor operability. Fixed-installation dental treatment units, on the other hand, are large, space-consuming, and heavy. Existing portable treatment units cannot integrate complete air, water, and negative pressure functions within a limited space while ensuring the stability of the chair's extension and folding. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a portable, handheld mobile dental chair / treatment unit.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: it includes a support frame, a chair back panel is rotatably mounted on the top of the support frame, a first guide frame is rotatably mounted inside the support frame, a first roller is mounted on the top of the first guide frame, the first roller contacts the back of the chair back panel, the first guide frame is rotatably connected to a first connecting rod, and the first connecting rod is connected to a first lead screw mechanism. The support frame is rotatably mounted on top of the support frame and in front of the chair back panel. A second guide frame is rotatably mounted inside the support frame. A second roller is mounted on top of the first guide frame. The second roller contacts the back of the seat panel. The second guide frame is rotatably connected to a second connecting rod. The second connecting rod is connected to a second lead screw mechanism. The front side of the seat plate is rotatably connected to the leg plate, and the front side of the second guide frame is provided with a third roller. The third roller contacts the back of the leg plate, and the front side of the leg plate is rotatably connected to the pedal. The support frame is equipped with rollers at its end, support legs on its bottom surface, and a combined gas-water-negative pressure supply box inside the support frame.

[0006] A further configuration is provided in which a first inclined rod is fixedly installed at the bottom of the first guide frame, the inclined rod extends toward the seat plate, and the end of the first inclined rod is rotatably connected to the end of the first connecting rod; a second inclined rod is fixedly installed at the bottom of the second guide frame, the second inclined rod extends toward the seat plate, and the end of the second inclined rod is rotatably connected to the end of the second connecting rod.

[0007] Further configured, the first link and the second link are arranged in a cross configuration.

[0008] Further configured, the air-water-negative pressure triple integrated supply box includes a box body fixedly installed on a support frame. An air compressor, a water pump, and a drain pump are installed inside the box body. The air compressor outlet is connected to the air pump through a pipe. The air pump suction end is connected to the negative pressure compressor inlet end through a pipe. The water pump inlet end is connected to a water purifier through a pipe. The water pump outlet end is connected to the negative pressure compressor inlet end through a pipe. The drain pump inlet end is connected to the negative pressure compressor outlet end.

[0009] Further configured, the left side of the air-water-negative pressure triple integrated supply box is provided with an air interface, a water inlet interface and a drain interface, the air pump is connected to the air interface via the pipe, the water pump is connected to the water inlet interface via the pipe, and the drain pump is connected to the drain interface via the pipe.

[0010] Further configured, both the first lead screw mechanism and the second lead screw mechanism include a motor, a lead screw, and a slider. The motor is fixedly mounted on the support frame, the first connecting rod is rotatably mounted on the slider, and the second connecting rod is rotatably mounted on the slider.

[0011] Further configured, the air-water-negative pressure triple integrated supply box of the box body is provided with a placement platform and a dental instrument rack on one side. The top surface of the placement platform is provided with a receiving groove. The dental instrument rack is provided with several circular holes. The circular holes can hold a suction hammer, a water suction gun and a water spray gun. The suction hammer is connected to an air interface, the water suction gun is connected to a water inlet interface and the water spray gun is connected to a drain interface.

[0012] A further configuration includes a housing on the outside of the support frame, a telescopic rod on the top of the housing, and a handle on the top of the telescopic rod.

[0013] A further configuration includes a telescopic rod at the top of the chair back panel, and a light at the top of the telescopic rod.

[0014] Further configured, the pulleys are located on the bottom surface of the box, and four pulleys are installed at the four corners of the bottom surface of the box.

[0015] The beneficial effects of this invention are as follows: This application, through collaborative innovation at both the structural layout and functional integration levels, effectively resolves the contradiction between existing portable dental chairs' inability to simultaneously accommodate seat posture adjustment and a complete independent supply of air, water, and negative pressure.

[0016] At the structural layout level, this application divides the internal space of the support frame 1 into an upper transmission area and a lower supply area. The upper space is used to install the first lead screw mechanism 6, the second lead screw mechanism 11, the first connecting rod 5, and the second connecting rod 10, and to achieve bidirectional drive within a limited length by using the cross-arranged connecting rod structure. The lower and middle spaces are used to accommodate the air-water-negative pressure triple integrated supply box 17. At the same time, pulleys 15 are directly installed at the four corners of the bottom surface of the support frame 1. The box 17 serves as both a load-bearing base and a supply center, eliminating the need for additional independent equipment cabinets or instrument carts, thereby freeing up a complete seat adjustment range within the compact size of the whole machine.

[0017] At the functional integration level, this application uses an independent motor drive and a lead screw self-locking transmission to achieve the angle adjustment of the backrest 2, seat 7, and legboard 12, rather than relying on pneumatic or hydraulic power. Therefore, seat posture adjustment does not consume air pressure and does not share any power source or pipeline channel with the water supply or negative pressure system. Inside the air-water-negative pressure triple integrated supply box 17, the air compressor 20, water pump 21, drain pump 22, and negative pressure machine 25 are arranged in independent circuits. The air compressor 20 is only responsible for supplying compressed air, the water pump 21 and drain pump 22 independently complete water supply and drainage, and the negative pressure machine 25 independently generates negative pressure suction. Each system is connected to the corresponding air interface 27, water inlet interface 28, and drain interface 29 through independent pipes 23, realizing complete physical isolation of the air circuit, water circuit, and negative pressure circuit, avoiding insufficient air supply and mutual interference problems caused by multiple uses of one machine.

[0018] In summary, this application arranges the seat posture adjustment mechanism in the upper internal space of the support frame 1 and drives it independently with a motor, while integrating the air-water-negative pressure supply system in the lower internal space of the support frame 1 and adopting an independent circuit design. The two types of functional systems are spatially layered, electrically decoupled, and completely isolated in pipelines. Thus, within a limited volume that meets portability requirements, it simultaneously achieves stepless adjustment of seat posture and independent and stable operation of the three systems of air-water-negative pressure, truly solving the technical problem of the difficulty in achieving both portability and functional integrity. Attached Figure Description

[0019] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0020] Figure 1 This is a schematic diagram of the stacked state in Embodiment 1 of the present invention.

[0021] Figure 2 This is a schematic diagram of the gas-water-negative pressure triple integrated supply box according to Embodiment 1 of the present invention.

[0022] Figure 3 This is a schematic diagram of the unfolded state of Embodiment 1 of the present invention.

[0023] Figure 4 This is a schematic diagram of the installation structure of the support frame, backrest, seat, pedal and push plate according to Embodiment 1 of the present invention.

[0024] Figure 5 This is a schematic diagram of the installation structure of the first lead screw mechanism, the chair back panel, the seat panel, the pedal, and the push plate in Embodiment 1 of the present invention.

[0025] Figure 6 This is a schematic diagram of the support frame according to Embodiment 1 of the present invention.

[0026] In the diagram: 1. Support frame; 2. Chair back panel; 3. First guide frame; 4. First roller; 5. First connecting rod; 6. First lead screw mechanism; 7. Seat plate; 8. Second guide frame; 9. Second roller; 10. Second connecting rod; 11. Second lead screw mechanism; 12. Leg plate; 13. Third roller; 14. Pedal; 15. Pulley; 16. Support leg; 17. Gas-water-negative pressure triple integrated supply box; 18. First inclined rod; 19. Second inclined rod. 20. Rod; 21. Air compressor; 22. Water pump; 23. Drain pump; 24. Pipe; 25. Air pump; 26. Negative pressure machine; 27. Water purifier; 28. Air inlet; 29. ​​Water inlet; 30. Drain inlet; 31. Motor; 32. Lead screw; 33. Slider; 34. Placement table; 35. Dental instrument rack; 36. Receiving slot; 40. Round hole; 41. Housing; 42. Telescopic rod; 43. Handle; 44. Lighting lamp. Detailed Implementation

[0027] Example 1: In a typical embodiment of the present invention, a portable handheld mobile dental chair is provided.

[0028] This embodiment provides a portable, handheld mobile dental chair / comprehensive treatment unit, as described in the following reference. Figures 1-6 The system includes a support frame 1, which has an overall frame structure made of high-strength, lightweight alloy material. Its interior provides space for mounting various drive components and the supply system. A chair back panel 2 is rotatably mounted on the top rear end of the support frame 1 via a first rotating hinge. The chair back panel 2 supports the patient's back and head, with its back facing the interior space of the support frame 1. A first guide frame 3 is rotatably mounted on the rear interior side of the support frame 1 via a second rotating hinge. The first guide frame 3 has a long, strip-like structure, with one end rotatably connected to the internal crossbeam of the support frame 1 and the other end being a free-swinging end. A first roller 4 is fixedly mounted on the top of the first guide frame 3. The surface of the first roller 4 is in close contact with the back of the chair back panel 2, forming a rolling engagement. When the first guide frame 3 swings around its rotation center, the first roller 4 can roll along the back of the chair back panel 2, thereby converting the swinging motion of the first guide frame 3 into a lifting or releasing action on the chair back panel 2. The first guide frame 3 is rotatably connected to the first connecting rod 5 at its middle position via a third rotating hinge. The end of the first connecting rod 5 away from the first guide frame 3 is rotatably connected to the sliding component of the first lead screw mechanism 6.

[0029] A seat plate 7 is rotatably mounted on the top front side of the support frame 1 (i.e., the position in front of the backrest 2) via a fourth rotary hinge. The seat plate 7 is used to support the patient's buttocks. A second guide frame 8 is rotatably mounted on the inner front side of the support frame 1 via a fifth rotary hinge. The second guide frame 8 is also a long strip-shaped structure, with one end rotatably connected to the inner crossbeam of the support frame 1. A second roller 9 is fixedly mounted on the top of the second guide frame 8, and the wheel surface of the second roller 9 is in close contact with the back of the seat plate 7 to form a rolling engagement. A second connecting rod 10 is rotatably connected to the middle position of the second guide frame 8 via a sixth rotary hinge. The end of the second connecting rod 10 away from the second guide frame 8 is rotatably connected to the sliding component of the second lead screw mechanism 11. In particular, in this embodiment, the first connecting rod 5 and the second connecting rod 10 are arranged crosswise in space, that is, they intersect each other in the swing plane but do not interfere with each other. This cross arrangement can effectively shorten the overall length of the support frame 1, so that the two independent drive paths can be compactly arranged in the limited box space, while ensuring sufficient swing stroke of each.

[0030] The front edge of the seat plate 7 is rotatably connected to a leg plate 12 via a seventh pivot hinge. The leg plate 12 supports the patient's lower leg. A third roller 13 is fixedly mounted on the front end of the second guide frame 8. The surface of the third roller 13 is in close contact with the back of the leg plate 12, forming a rolling engagement. When the second guide frame 8 swings around its rotation center, the third roller 13 moves back and forth and rolls accordingly, thereby causing the leg plate 12 to rotate around its connecting hinge with the seat plate 7, achieving synchronous adjustment of the leg plate 12's angle. The front end of the leg plate 12 is rotatably connected to a pedal 14 via an eighth pivot hinge. The pedal 14 supports the patient's foot and can adaptively adjust its angle as the leg plate 12 rotates, ensuring patient foot comfort.

[0031] To achieve independent driving of the first guide frame 3 and the second guide frame 8, the first lead screw mechanism 6 and the second lead screw mechanism 11 adopt the same driving structure. Specifically, the first lead screw mechanism 6 includes a first motor 30, a first lead screw 31, and a first slider 32. The first motor 30 is fixedly mounted on the inner rear bottom plate of the support frame 1. The first lead screw 31 extends along the length of the support frame 1, and one end of the first lead screw 31 is connected to the output shaft of the first motor 30 via a coupling. The first slider 32 is sleeved on the first lead screw 31 and forms a helical transmission engagement with the first lead screw 31. The end of the first connecting rod 5 away from the first guide frame 3 is rotatably mounted on the first slider 32 via a ninth rotating hinge. Similarly, the second lead screw mechanism 11 includes a second motor 30, a second lead screw 31, and a second slider 32. The second motor 30 is fixedly mounted on the inner front bottom plate of the support frame 1. The second lead screw 31 also extends along the length of the support frame 1. The second slider 32 is sleeved on the second lead screw 31. The end of the second connecting rod 10 away from the second guide frame 8 is rotatably mounted on the second slider 32 via a tenth rotating hinge. With the above arrangement, when the first motor 30 drives the first lead screw 31 to rotate, the first slider 32 slides along the axial direction of the first lead screw 31, thereby pushing the first guide frame 3 to swing through the first connecting rod 5; when the second motor 30 drives the second lead screw 31 to rotate, the second slider 32 slides along the axial direction of the second lead screw 31, thereby pushing the second guide frame 8 to swing through the second connecting rod 10. The two lead screw mechanisms are controlled independently and do not interfere with each other.

[0032] More specifically, a first inclined rod 18 is fixedly installed at the bottom of the first guide frame 3. The first inclined rod 18 extends obliquely towards the seat plate 7, and its end is rotatably connected to the end of the first connecting rod 5 via an eleventh rotating hinge. By setting the first inclined rod 18, the direction of torque transmission between the first connecting rod 5 and the first guide frame 3 can be effectively changed, so that the linear motion of the first slider 32 in the horizontal direction can be more smoothly converted into the oscillation of the first guide frame 3 around its rotation center, avoiding motion dead points caused by direct connection. Similarly, a second inclined rod 19 is fixedly installed at the bottom of the second guide frame 8. The second inclined rod 19 also extends obliquely towards the seat plate 7, and its end is rotatably connected to the end of the second connecting rod 10 via a twelfth rotating hinge. The presence of the first inclined rod 18 and the second inclined rod 19 provides more clearance when the first connecting rod 5 and the second connecting rod 10 are arranged in an intersecting manner, further ensuring the smoothness of the transmission process.

[0033] The support frame 1 has four pulleys 15 at its rear end (bottom rear side). In this embodiment, they are fixedly installed on the bottom surface of the support frame 1 (especially at the four corners of the bottom surface of the inner box 17), allowing the entire treatment table to be smoothly pushed on the ground via the pulleys 15. The bottom surface of the support frame 1 also has extendable or fixed-height support legs 16 located inside or beside the pulleys 15. When the treatment table moves to the target position, the support legs 16 support the ground, preventing accidental slippage during treatment and ensuring overall stability. A gas-water-negative pressure triple-supply box 17 is fixedly installed in the central area of ​​the support frame 1. This triple-supply box 17 is used to independently provide the gas, water, and negative pressure sources required for treatment in non-medical environments.

[0034] Specifically, the air-water-negative pressure triple-supply box 17 includes a box body fixedly installed on a support frame 1. The box body is made of sound-insulating and vibration-damping materials to reduce noise during the operation of internal equipment. An air compressor 20, a water pump 21, and a drain pump 22 are installed inside the box. The air outlet of the air compressor 20 is connected to the air inlet of the air pump 24 via a pipe 23, and the air intake of the air pump 24 is connected to the air inlet of the negative pressure unit 25 via a pipe 23, thus forming a negative pressure suction circuit. The water inlet of the water pump 21 is connected to the water outlet of the water purifier 26 via a pipe 23. The water purifier 26 is used to filter and purify the input water source, and the water outlet of the water pump 21 is connected to the water inlet of the negative pressure unit 25 via a pipe 23 to provide working water for the negative pressure unit 25. The water inlet of the drain pump 22 is connected to the water outlet of the negative pressure unit 25 via a pipe 23 to extract wastewater discharged from the negative pressure unit 25 and discharge it to an external collection container. The left side of the air-water-negative pressure triple supply box 17 is equipped with an air inlet 27, a water inlet 28, and a drain inlet 29. The air pump 24 is connected to the air inlet 27 through a pipe 23 to supply compressed air to external dental instruments; the water pump 21 is connected to the water inlet 28 through a pipe 23 to supply cleaning or cooling water to external instruments; and the drain pump 22 is connected to the drain inlet 29 through a pipe 23 to discharge waste liquid generated during treatment.

[0035] In addition, the air-water-negative pressure triple-supply box 17 has a placement platform 33 and a dental instrument rack 34 on one side (e.g., the right side or top). The top surface of the placement platform 33 has a receiving slot 35, which can be used to temporarily place small tools or medicines required for dental treatment. The dental instrument rack 34 has several through holes 36, which can hold commonly used dental treatment instruments such as suction hammers, suction guns, and water spray guns. The suction hammer is connected to the air interface 27 via a hose, using compressed air to drive the hammering action; the suction gun is connected to the water inlet 28 via a hose, used for rinsing the oral cavity; and the water spray gun is connected to the drain interface 29 via a hose, used to remove waste liquid and residue from the oral cavity. In this way, all the air, water, and negative pressure function interfaces and supporting instruments required for treatment are integrated into the treatment table body, without relying on external fixed pipelines.

[0036] The support frame 1 is also covered by a housing 40, which is made of lightweight and high-strength engineering plastic. The housing 40 not only protects the internal precision components but also contributes to a clean and aesthetically pleasing appearance. A telescopic rod 41 is fixedly installed on the top rear side of the housing 40. The telescopic rod 41 has a multi-stage pull-out structure and a handle 42 at its top. When the treatment table needs to be moved, the telescopic rod 41 can be pulled out, and the handle 42, along with the pulleys 15, allows for easy pushing. When it needs to be carried by hand, the telescopic rod 41 can be retracted to its shortest position, and the handle 42 can be pulled directly. The top of the chair back panel 2 also has a telescopic rod, and a lighting lamp 43 is installed at the top of this rod. The lighting lamp 43 uses an LED light source and is powered by an internal battery or an external power source. It provides sufficient local lighting for the patient's oral cavity area during treatment, ensuring that the doctor has a clear operating field of vision even in non-medical environments.

[0037] This embodiment achieves significant technical effects through the precise coordination and linkage of the aforementioned components. Specifically, the first lead screw mechanism 6 and the second lead screw mechanism 11 independently drive the first connecting rod 5 and the second connecting rod 10, thereby causing the first guide frame 3 and the second guide frame 8 to swing around their respective rotation centers. Combined with the rolling and lifting action of the first roller 4, the second roller 9, and the third roller 13 on the back of the chair back 2, the seat 7, and the legboard 12, independent and stepless adjustment of the angles of the chair back 2, the seat 7, and the legboard 12 can be achieved. Because the first lead screw mechanism 6 and the second lead screw mechanism 11 are independently controlled, doctors can adjust the tilt angle of the chair back 2, the tilt angle of the seat 7, and the lifting angle of the legboard 12 according to the different body characteristics, comfort needs, and specific treatment positions (such as supine, semi-recumbent, or sitting positions) of different patients. For example, for elderly patients or patients with heart disease, the tilt of the backrest 2 can be appropriately increased to allow them to recline into a semi-reclined position; for cases requiring posterior oral cavity treatment, the backrest 2 and seat 7 can be further flattened to allow the patient to be in a near-supine position. This multi-angle independent adjustment capability is something that existing fixed-angle portable dental chairs cannot achieve.

[0038] More importantly, this embodiment fully utilizes the self-locking principle inherent in the lead screw mechanism. When the first motor 30 and the second motor 30 stop operating, a stable helical self-locking engagement is formed between the first lead screw 31 and the first slider 32, and between the second lead screw 31 and the second slider 32, respectively. This self-locking engagement reliably maintains the current lifting position of the first guide frame 3 and the second guide frame 8, ensuring that the first roller 4, the second roller 9, and the third roller 13 always support the back of the chair back 2, the seat 7, and the leg plate 12 with constant pressure. Even if the patient fully relaxes and applies their weight to the chair back 2, the seat 7, and the leg plate 12, the load borne by each plate surface will be transmitted to the guide frame via the rollers, and then transmitted to the slider 32 via the guide frame through the connecting rod. Finally, the self-locking force between the lead screw 31 and the slider 32 balances the load, preventing any plate surface from sliding down or collapsing. This reliable angle-maintaining support effect fundamentally solves the industry pain point mentioned in the background technology of "inability to guarantee the maintenance of the angle of the chair back and chair legs", and greatly improves the safety and stability of diagnosis and treatment in non-medical environments.

[0039] Furthermore, by employing the cross-arranged first link 5 and second link 10, along with the inclined first and second diagonal bars 18 and 19, the entire transmission chain achieves efficient and smooth force transmission within the limited space of the support frame 1, reducing interference between moving pairs and extending the equipment's service life. The integrated air-water-negative pressure triple-supply box 17 eliminates the need for external air and water supply lines, allowing the treatment unit to independently perform all treatment functions in any location with a conventional power source, such as the patient's home, nursing home, or community temporary clinic, truly achieving portability and independence.

[0040] Working principle and complete working process of the present invention The portable mobile dental chair of the present invention has two working modes: a folded storage state and an unfolded use state. Its specific working principle is as follows: In its initial state, the treatment table is folded and stored. At this time, the first slider 32 of the first lead screw mechanism 6 is located at the distal end of the first lead screw 31 (the end away from the first motor 30). The first connecting rod 5 pulls the first guide frame 3 through the first inclined rod 18 to a roughly horizontal or downwardly tilted retracted position, and the first roller 4 descends with the first guide frame 3. Simultaneously, the second slider 32 of the second lead screw mechanism 11 is located at the distal end of the second lead screw 31. The second connecting rod 10 pulls the second guide frame 8 through the second inclined rod 19 to a horizontal retracted position, and the second roller 9 and the third roller 13 descend accordingly. The seat plate 7 and the leg plate 12 are folded forward and stacked on the top front side of the support frame 1. At this time, the entire treatment table is flat, which is convenient for storage and transportation. Doctors can drag or carry the treatment table to the target non-medical environment by using the handle 42 in conjunction with the telescopic pull rod 41 on the top of the housing 40.

[0041] When the chair is to be deployed, first place the treatment table stably on the ground, with the support legs 16 supporting the ground to ensure stability. Then, control the first motor 30 and the second motor 30 to operate according to the patient's desired position. If the backrest 2 needs to be adjusted, start the first motor 30 to rotate forward. The first motor 30 drives the first lead screw 31 to rotate, and the first slider 32 slides along the first lead screw 31 toward the first motor 30 (i.e., toward the rear). The first slider 32 pushes the first connecting rod 5 to swing through the ninth rotating hinge. The first connecting rod 5 pushes the first inclined rod 18 through the eleventh rotating hinge, thereby pushing the first guide frame 3 to swing upward around its rotation center. The first roller 4 at the top of the first guide frame 3 rolls along the back of the chair back 2, while gradually lifting the chair back 2 upward and rotating it around its rotating hinge with the support frame 1 until the desired tilt angle is reached, then stop the first motor 30.

[0042] If adjustment of the seat plate 7 and leg plate 12 is required, the second motor 30 is started to rotate forward. The second motor 30 drives the second lead screw 31 to rotate, and the second slider 32 slides along the second lead screw 31 toward the second motor 30 (i.e., forward). The second slider 32 pushes the second connecting rod 10 to swing through the tenth rotating hinge. The second connecting rod 10 pushes the second inclined rod 19 through the twelfth rotating hinge, thereby pushing the second guide frame 8 to swing upward around its rotation center. The second roller 9 at the top of the second guide frame 8 rolls along the back of the seat plate 7, lifting the seat plate 7 and flipping it to the desired angle. At the same time, the third roller 13 at the front end of the second guide frame 8 moves forward and upward with the swing of the second guide frame 8 and rolls to contact the back of the leg plate 12, thereby lifting the leg plate 12 upward and causing it to flip around the connecting hinge with the seat plate 7. Since the third roller 13 and the second roller 9 are linked synchronously, the unfolding action of the seat plate 7 and the leg plate 12 is coordinated. The linkage adjustment of the seat plate and the leg plate can be achieved by only one second motor 30, making the operation extremely simple.

[0043] Once all the plates are adjusted to the appropriate angle, the screw mechanism automatically enters a self-locking state because the helix angle between the first lead screw 31 and the first slider 32, and between the second lead screw 31 and the second slider 32, is less than the equivalent friction angle. Even if the patient is sitting or lying on the chair, the angles of each plate will not change, ensuring absolute safety during the treatment process. Subsequently, the doctor can turn on the air compressor 20, water pump 21, drain pump 22, and negative pressure machine 25 in the air-water-negative pressure triple-supply box 17, and remove instruments such as the suction hammer, suction gun, and spray gun from the dental instrument rack 34. The necessary working medium is obtained through the air inlet 27, water inlet 28, and drain outlet 29, respectively, to perform routine dental examinations and treatments on the patient. The lighting 43 can be turned on at any time to supplement local illumination.

[0044] After treatment, first, shut off all power devices in the air-water-negative pressure triple-supply box 17. Then, control the first motor 30 and the second motor 30 to rotate in opposite directions, causing the first slider 32 and the second slider 32 to slide back to their original positions along their respective lead screws. The first guide frame 3 and the second guide frame 8 are pulled downwards and returned to their original positions via the first connecting rod 5 and the second connecting rod 10. The backrest 2, seat 7, and legboard 12 lose their lifting force and gradually fold back to their initial storage positions under gravity. Finally, place all instruments back into the circular hole 36, retract the telescopic rod 41, and move the treatment table out of the treatment area using the handle 42. The entire operation is simple and efficient; a single person can complete the entire unfolding, adjustment, storage, and transportation process, fully meeting the actual needs of home treatment.

[0045] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A portable, handheld, mobile dental chair / treatment unit, characterized in that: The system includes a support frame, a chair back panel rotatably mounted on the top of the support frame, a first guide frame rotatably mounted inside the support frame, a first roller mounted on the top of the first guide frame, the first roller contacting the back of the chair back panel, and the first guide frame rotatably connected to a first connecting rod, which is connected to a first lead screw mechanism. The support frame is rotatably mounted on top of the support frame and in front of the chair back panel. A second guide frame is rotatably mounted inside the support frame. A second roller is mounted on top of the first guide frame. The second roller contacts the back of the seat panel. The second guide frame is rotatably connected to a second connecting rod. The second connecting rod is connected to a second lead screw mechanism. The front side of the seat plate is rotatably connected to the leg plate, and the front side of the second guide frame is provided with a third roller. The third roller contacts the back of the leg plate, and the front side of the leg plate is rotatably connected to the pedal. The support frame is equipped with pulleys at its end and support legs on its bottom surface. The support frame is equipped with a gas-water-negative pressure triple integrated supply box. The gas-water-negative pressure triple integrated supply box includes a box body fixedly installed on the support frame, and an air compressor, a water pump, and a drain pump are installed inside the box body.

2. The portable, handheld mobile dental chair as described in claim 1, characterized in that, A first inclined rod is fixedly installed at the bottom of the first guide frame, and the inclined rod extends toward the seat plate. The end of the first inclined rod is rotatably connected to the end of the first connecting rod. A second inclined rod is fixedly installed at the bottom of the second guide frame, and the second inclined rod extends toward the seat plate. The end of the second inclined rod is rotatably connected to the end of the second connecting rod.

3. The portable, handheld mobile dental chair as described in claim 1, characterized in that: The first link and the second link are arranged in an intersecting manner.

4. The portable, handheld mobile dental chair as described in claim 1, characterized in that: The air compressor outlet is connected to the air pump via a pipe, the air pump intake is connected to the negative pressure unit intake via a pipe, the water pump inlet is connected to the water purifier via a pipe, the water pump outlet is connected to the negative pressure unit intake via a pipe, and the drain pump inlet is connected to the negative pressure unit outlet.

5. The portable, handheld mobile dental chair as described in claim 4, characterized in that: The left side of the air-water-negative pressure triple integrated supply box is equipped with an air interface, a water inlet interface, and a drain interface. The air pump is connected to the air interface via the pipe, the water pump is connected to the water inlet interface via the pipe, and the drain pump is connected to the drain interface via the pipe.

6. The portable, handheld mobile dental chair as described in claim 1, characterized in that: Both the first lead screw mechanism and the second lead screw mechanism include a motor, a lead screw, and a slider. The motor is fixedly mounted on the support frame, the first connecting rod is rotatably mounted on the slider, and the second connecting rod is rotatably mounted on the slider.

7. The portable, handheld mobile dental chair as described in claim 1, characterized in that: The air-water-negative pressure triple integrated supply box of the box body is provided with a placement platform and a dental instrument rack on one side. The top surface of the placement platform has a receiving groove, and the dental instrument rack has several round holes through it. The round holes can hold a suction hammer, a water suction gun and a water spray gun. The suction hammer is connected to an air interface, the water suction gun is connected to a water inlet interface, and the water spray gun is connected to a drain interface.

8. The portable, handheld mobile dental chair comprehensive treatment table according to claim 1, characterized in that: The support frame is provided with a housing on the outside, and a telescopic rod is provided on the top of the housing, with a handle on the top of the telescopic rod.

9. The portable, handheld mobile dental chair as described in claim 1, characterized in that: A telescopic rod is installed at the top of the chair back panel, and a light is installed at the top of the telescopic rod.

10. The portable, handheld mobile dental chair comprehensive treatment table according to claim 1, characterized in that: The pulleys are located on the bottom surface of the box, and four pulleys are installed at the four corners of the bottom surface of the box.

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