Shielding device of photoelectric sensing flushing system and dental chair

Abstract

The utility model discloses a shielding device of a photoelectric sensing flushing system and a dental chair, and relates to the technical field of dental chair pipeline cleaning, the shielding device of the photoelectric sensing flushing system is applied to the dental chair and comprises a mounting seat and a shielding piece, and the mounting seat is placed on an instrument hanger of the dental chair; the shielding piece is in sliding connection with the mounting seat, and the shielding piece can shield a detection device on the dental chair; when the mounting seat accommodates the instrument hanger limited on the dental chair, the shielding piece can shield or expose the detection device, so that a waterway system of the dental chair stops running or starts running. According to the technical scheme provided by the utility model, the problems that time and labor are wasted and the error-tolerant rate is low due to the fact that the dental chair device needs to start flushing by treading the pedals on the pipelines one by one when flushing a waterway and needs to put back the appliance hanger to flush the next pipeline after flushing one pipeline are solved.

Description

Technical Field

[0001] This utility model relates to the field of dental chair cleaning technology, and in particular to a shielding device and dental chair for a photoelectric induction flushing system. Background Technology

[0002] Dental chairs are indispensable core equipment in oral treatment, widely used in medical institutions and dental clinics at all levels. The water system of the dental chair is one of its important auxiliary functions, primarily used to provide water for dental instruments and support various treatment procedures. For example, during dental treatment, the water system can be used to rinse the mouth, helping to remove tartar, debris, and blood generated during the procedure, ensuring a clear surgical field. The water system is also crucial in daily maintenance, requiring regular rinsing and disinfection to prevent microbial growth and biofilm formation, avoiding contamination of the patient's mouth or the treatment room environment, and protecting the health of both patients and medical staff. According to the "Standards for Infection Management in Dental Clinics" (WS / T842—2024), the dental chair water system needs to be rinsed for 2-3 minutes before each appointment and for 20-30 seconds before and after each patient's treatment to ensure hygiene and safety. The dental chair is equipped with instrument holders and detection devices for identifying tubes; the water system can only function properly when the detection device detects that one of the tubes on the instrument holder has been removed.

[0003] Due to limitations of the dental chair equipment, the existing dental chair water system requires stepping on a foot pedal to start rinsing each pipe individually. After rinsing one pipe, the instrument rack must be returned before rinsing the next one. Each pipe requires 3 minutes of rinsing, and the total rinsing time for each dental chair water system cleaning and disinfection process is at least 12 minutes. This is time-consuming and labor-intensive, increases nurses' working hours, reduces work efficiency, and results in low compliance, execution rate, and accuracy of rinsing. Utility Model Content

[0004] The main purpose of this invention is to propose a shielding device and dental chair for a photoelectric induction rinsing system, which aims to solve the problem that when rinsing the water path of the dental chair device, it is necessary to step on the foot pedal to start rinsing one pipe at a time, and after rinsing one pipe, it is necessary to put it back on the instrument rack before rinsing the next pipe, which is time-consuming, labor-intensive and has a low error tolerance.

[0005] To achieve the above objectives, the photoelectric induction rinsing system proposed in this utility model has a shielding device applied to a dental chair, including a mounting base and a shielding component. The mounting base is placed on the instrument rack of the dental chair; the shielding component is slidably connected to the mounting base, and the shielding component can shield the detection device on the dental chair; when the mounting base is located within the instrument rack of the dental chair, the shielding component can shield or expose the detection device, so as to stop or start the water system of the dental chair.

[0006] In one embodiment, the shielding device of the photoelectric induction washing system is provided with a lifting assembly, the lifting assembly including a transmission component, the transmission component being connected to the shielding component, and the transmission component being slidably connected to the mounting base.

[0007] In one embodiment, the lifting assembly further includes a driving member, which is movably connected to the transmission member. The driving member can drive the transmission member to move the shielding member to shield or expose the detection device.

[0008] In one embodiment, the mounting base has a mounting cavity, the shielding member is slidably disposed in the mounting cavity, and the mounting base is made of a light-transmitting material.

[0009] In one embodiment, the lifting assembly is provided with a positioning member, which is sleeved on the transmission member and is located inside the mounting cavity and abuts against the inner wall of the mounting cavity.

[0010] In one embodiment, the mounting base has a limiting portion that abuts against the instrument holder when the mounting base accommodates an instrument holder located on a dental chair.

[0011] In one embodiment, the shielding element is made of a light-blocking material.

[0012] This utility model also proposes a dental chair, including at least one shielding device for a photoelectric induction rinsing system, at least one rinsing pipe, an instrument rack, a water system, and a detection device. The instrument rack is provided with at least one receiving cavity, each of which is used to accommodate and limit one shielding device of the photoelectric induction rinsing system or one of the rinsing pipes; the water system is used to rinse the rinsing pipes; and the detection device is used to detect the rinsing pipes or the shielding device of the photoelectric induction rinsing system.

[0013] In one embodiment, the shielding device of the photoelectric induction rinsing system includes a driving component and a transmission component, the driving component is movably connected to the transmission component, the transmission component is connected to the shielding component, and the water circuit system is electrically connected to the driving component.

[0014] In one embodiment, the detection device is an infrared sensor or a photoelectric switch.

[0015] This invention relates to a photoelectric induction flushing system with a shielding device that ingeniously activates and deactivates the dental chair's water system through a clever mechanical structure. Specifically, the mounting base is designed to fit snugly into the dental chair's instrument rack, ensuring stable placement. The shielding component and the mounting base are connected via a sliding connection, such as a groove or guide rail, allowing for smooth sliding. When the mounting base is placed on the instrument rack, the shielding component slides to the shielding position, blocking the detection device and triggering the dental chair's water system to stop. Conversely, when it slides to the exposed position, the detection device detects the pipe detachment, and the water system begins operation. Through this simple sliding operation, healthcare workers can quickly control the water system's activation and deactivation without having to manually activate each pipe, significantly reducing operation time and labor intensity. Conventional dental chair flushing of all pipes takes at least 12 minutes, while this device eliminates the need for continuous time commitment from nurses, significantly improving work efficiency. The device is simple in structure, low in cost, easy to install and maintain, and suitable for widespread application on various types of dental chairs. Meanwhile, due to its ease of operation, it reduces incomplete or missed rinsing caused by human error, improves rinsing compliance and accuracy, effectively reduces the risk of infection, and protects the health of medical staff and patients. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a shielding device of the photoelectric induction rinsing system provided by this utility model;

[0018] Figure 2 A schematic diagram of an embodiment of the instrument hanger provided by this utility model.

[0019] Explanation of icon numbers:

[0020] 100. Shielding device for photoelectric induction rinsing system; 1. Mounting base; 1a. Mounting cavity; 2. Shielding component; 3. Lifting assembly; 31. Transmission component; 32. Drive component; 33. Positioning component; 11. Limiting part; 4. Instrument hanger; 4a. Receiving cavity.

[0021] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] This utility model proposes a shielding device 100 for a photoelectric induction rinsing system.

[0026] Please see Figure 1 In one embodiment of this utility model, the shielding device 100 of the photoelectric induction rinsing system includes a mounting base 1 and a shielding member 2. The mounting base 1 is placed on the instrument rack 4 of the dental chair. The shielding member 2 is slidably connected to the mounting base 1 and can shield the detection device on the dental chair. When the mounting base 1 accommodates the instrument rack 4 of the dental chair, the shielding member 2 can shield or expose the detection device so that the water system of the dental chair stops or starts operating.

[0027] In this embodiment, the light-shielding device 100 of the photoelectric induction rinsing system achieves the start and stop of the dental chair water system through a clever mechanical structure. Specifically, the mounting base 1 is designed to fit snugly with the dental chair instrument rack 4, allowing it to be securely placed on the instrument rack 4. The light-shielding component can generally be made of tin foil or a material with a metallic coating. The light-shielding component 2 and the mounting base 1 are connected by a sliding connection, for example, through a groove or guide rail to achieve smooth sliding. Before using the dental chair, the user removes all the tubes that need to be used from the dental chair and installs the shielding device 100 of the photoelectric induction rinsing system onto the instrument hanger 4. The shielding device 2 blocks the detection device, which then detects that the tubes have not been removed and therefore does not perform a rinsing operation. When rinsing is required, the user moves the shielding device 2 to the corresponding tube position so that it does not block the detection device. The dental chair system then detects that the tube has been removed and performs a rinsing operation. After rinsing one tube, the user can set a fixed time mode to clean the subsequent tubes. The position of the shielding device 2 can also be controlled by the control module throughout the process, so that different tubes can be rinsed in sequence.

[0028] With a simple sliding operation, healthcare workers can quickly control the start and stop of the water system, eliminating the need to manually activate each pipe, significantly reducing operation time and labor intensity. Conventional dental chair flushing of all pipes takes at least 12 minutes, while this device eliminates the need for continuous foot pedal operation, significantly improving work efficiency. The device is simple in structure, low in cost, and easy to install and maintain, making it suitable for widespread application on various types of dental chairs. Furthermore, its ease of operation reduces incomplete or missed flushing due to human error, improving flushing compliance and accuracy, effectively reducing the risk of infection, and protecting the health of both patients and healthcare professionals.

[0029] In one embodiment of this utility model, please refer to Figure 1 The shielding device 100 of the photoelectric induction washing system is equipped with a lifting component 3. The lifting component 3 includes a transmission component 31, which is connected to the shielding component 2 and is slidably connected to the mounting base 1.

[0030] In one embodiment, the lifting assembly 3 further optimizes the operation of the blocking component 2. Specifically, the transmission component 31 and the blocking component 2 are linked through a mechanical connection (such as a threaded connection, snap-fit ​​connection, or welding), while the transmission component 31 and the mounting base 1 are connected by a sliding connection, for example, through a groove or guide rail set in the mounting base 1 to achieve the up-and-down sliding of the transmission component 31. When it is necessary to control the position of the blocking component 2, the transmission component 31 is operated (such as by a manual knob, electric motor drive, or hydraulic device drive), and the transmission component 31 drives the blocking component 2 to move in the vertical direction. For example, when the transmission component 31 moves downward, the blocking component 2 moves downward accordingly, blocking the detection device and stopping the operation of the dental chair water system; conversely, when the transmission component 31 moves upward, the blocking component 2 moves upward, no longer blocking the detection device, and the water system starts to operate. In specific implementations, the transmission component 31 can be a threaded rod that moves up and down by rotating a nut; or the transmission component 31 can be an electric telescopic rod that is precisely positioned by a control module. In addition, the lifting assembly 3 can also be equipped with a limit switch to prevent the transmission component 31 from moving excessively and causing damage to the device.

[0031] The lifting assembly 3 makes the movement of the shielding component 2 smoother and more precise, avoiding positional deviations that may occur due to manual operation of the shielding component 2, thereby improving the accuracy of the water system's start-up and shutdown control. Secondly, the linkage between the transmission component 31 and the shielding component 2 enables remote or automated control, further reducing the operation time and labor intensity for medical staff. For example, when equipped with the electric transmission component 31, medical staff can easily control the lifting and lowering of the shielding component 2 via control buttons or foot switches, eliminating the need for manual adjustment of its position and significantly improving work efficiency.

[0032] In one embodiment of this utility model, please refer to Figure 1 The lifting assembly 3 also includes a drive component 32, which is movably connected to the transmission component 31. The drive component 32 can drive the transmission component 31 to move the shielding component 2 to shield or expose the detection device.

[0033] In this embodiment, the lifting assembly 3 further integrates a drive component 32 to achieve automated control of the transmission component 31 and the blocking component 2. The drive component 32 is movably connected to the transmission component 31, and power transmission can be achieved in various ways. For example, the drive component 32 can be a miniature electric motor, connected to the transmission component 31 via gear transmission. When the motor starts, the rotation of the gear drives the transmission component 31 to move up and down along the slide, thereby controlling the position of the blocking component 2. In another embodiment, the drive component 32 can be an electromagnet, driving the transmission component 31 to move via electromagnetic force. In specific applications, the drive component 32 can be directly controlled by the dental chair's control system, or it can be equipped with an independent control module, operated via a button, foot switch, or wireless remote control. For example, when medical staff need to flush the tubing, they only need to press the foot switch, the drive component 32 starts, drives the transmission component 31 to move, exposes the detection device on the blocking component 2, and triggers the water system to start flushing. After flushing is completed, the drive component 32 reverses its action, causing the blocking component 2 to cover the detection device again, stopping the water system operation. This design can also be combined with sensors to enable automated flushing processes, such as automatically starting the flushing program when a pipe is detected to have been removed.

[0034] This invention achieves automated control of the dental chair water system by adding a drive component 32 to the lifting assembly 3, significantly improving operational convenience and efficiency. Firstly, the introduction of the drive component 32 reduces the frequency of manual operation by healthcare professionals, lowering the risk of incomplete or missed rinsing due to human error, thereby improving rinsing compliance and accuracy. Secondly, automated control allows for faster and more precise start-up and shutdown of the water system, reducing rinsing time and improving work efficiency. For example, in busy dental clinics, healthcare professionals can focus on other important tasks without frequent manual operation of the rinsing device, saving considerable time. Furthermore, the use of the drive component 32 also enables timed rinsing, further optimizing the rinsing process. For example, the system can preset the rinsing time for each pipe and automatically complete the rinsing of all pipes sequentially without manual intervention. This design not only improves the overall performance of the dental chair water system but also provides medical institutions with a more efficient and reliable solution, effectively protecting the health and safety of both patients and healthcare professionals.

[0035] In one embodiment of this utility model, please refer to Figure 1 The mounting base 1 has a mounting cavity 1a, and the shielding member 2 is slidably disposed in the mounting cavity 1a. The mounting base 1 is made of a light-transmitting material.

[0036] In the shielding device 100 of the photoelectric induction flushing system of this utility model, the mounting base 1 has an internal mounting cavity 1a for accommodating and supporting the shielding member 2. The shielding member 2 is installed in the mounting cavity 1a by a sliding connection, for example, by setting a sliding groove or guide rail in the mounting cavity 1a. The shielding member 2 cooperates with the mounting cavity 1a through a slider or sliding rail to achieve smooth sliding operation. The mounting base 1 is made of a light-transmitting material, such as polycarbonate (PC), polymethyl methacrylate (PMMA), or transparent polyester, which have good light transmittance and mechanical properties. The light-transmitting material of the mounting base 1 allows the signal of the detection device (such as a photoelectric sensor) on the dental chair to pass through smoothly, thereby achieving effective shielding or exposure of the detection device. For example, when the shielding member 2 slides into the signal path of the detection device, the shielding member 2 will block the signal of the detection device, triggering the start or stop of the water circuit system. In specific implementations, the shape and size of the mounting base 1 can be customized according to the specific structure of the dental chair instrument hanger 4 to ensure that the mounting base 1 can be stably placed on the instrument hanger 4 and accurately matched with the position of the detection device.

[0037] The translucent mounting base 1 ensures normal signal transmission from the detection device, preventing interference even when the shielding component 2 is not obstructing the signal, thus improving system stability. The mounting cavity 1a provides stable sliding space for the shielding component 2, ensuring smooth and precise movement and reducing operational errors caused by mechanical friction or positional deviations. In practical use, medical personnel can quickly control the start and stop of the water system through simple sliding operations without worrying about signal interference or operational failures due to the material or structure of the mounting base 1.

[0038] In one embodiment of this utility model, please refer to Figure 1 The lifting assembly 3 is provided with a positioning element 33, which is sleeved on the transmission element 31. The positioning element 33 is located in the mounting cavity 1a and abuts against the inner wall of the mounting cavity 1a.

[0039] In this embodiment, the lifting assembly 3 further includes a positioning member 33 to ensure the stable and precise movement of the transmission member 31 within the mounting cavity 1a. The positioning member 33 is sleeved on the transmission member 31, and its outer surface tightly abuts against the inner wall of the mounting cavity 1a, thereby restricting the lateral movement of the transmission member 31 and allowing it to move only up and down along a predetermined sliding direction. For example, the positioning member 33 can be an elastic rubber sleeve or a plastic sleeve, the inner diameter of which matches the outer diameter of the transmission member 31, and is tightly fitted onto the transmission member 31 through an interference fit. A limiting groove or protrusion can be provided on the inner wall of the mounting cavity 1a, and the outer surface of the positioning member 33 is provided with a corresponding limiting structure, such as a groove or protrusion, to ensure a tight fit between the positioning member 33 and the inner wall of the mounting cavity 1a. In a specific embodiment, the transmission member 31 can be a rod made of metal or plastic, and the positioning member 33 is sleeved on it by injection molding. The inner wall of the mounting cavity 1a is precision machined to ensure the fitting accuracy with the positioning member 33. When the transmission component 31 moves up and down under the action of the driving component 32, the positioning component 33 plays a guiding and stabilizing role, ensuring that the movement of the transmission component 31 is smooth and accurate.

[0040] In one embodiment of this utility model, please refer to Figure 1 The mounting base 1 has a limiting part 11, which abuts against the instrument hanger 4 when the mounting base 1 accommodates the instrument hanger 4 which is located on the dental chair.

[0041] In one embodiment, the mounting base 1 is designed with a limiting part 11 to ensure that the mounting base 1 can be stably placed on the instrument hanger 4 of the dental chair. The limiting part 11 can be a protrusion, a groove, or a flexible buckle on the mounting base 1, and its shape and size are designed according to the specific structure of the instrument hanger 4 to achieve a tight fit with the instrument hanger 4. For example, when the mounting base 1 is a rectangular frame structure, the limiting part 11 can be a flexible buckle provided on both sides of the mounting base 1. These buckles can be engaged in the corresponding grooves on the instrument hanger 4, thereby firmly fixing the mounting base 1 to the instrument hanger 4. In another embodiment, the limiting part 11 can be a protrusion on the bottom of the mounting base 1. These protrusions cooperate with the positioning holes on the instrument hanger 4, and are fixed by interference fit or threaded connection. During installation, the user only needs to align the mounting base 1 with the positioning position on the instrument hanger 4, and gently press or tighten the screw to make the limiting part 11 fit tightly against the instrument hanger 4 to complete the installation. This design not only ensures the stability of the mounting base 1, but also facilitates quick disassembly and maintenance.

[0042] This invention significantly improves the installation stability and reliability of the shielding device 100 of the photoelectric sensing irrigation system by providing a limiting part 11 on the mounting base 1. The design of the limiting part 11 ensures a tight fit between the mounting base 1 and the instrument hanger 4, preventing the mounting base 1 from loosening or shifting due to vibration or external force, thereby ensuring the relative positional accuracy of the shielding component 2 and the detection device. During use in the dental chair, even with frequent operations and patient movement, the limiting part 11 ensures that the mounting base 1 remains stable, avoiding misoperation of the water system due to loosening of the mounting base 1. This design simplifies the installation and maintenance process, allowing users to complete installation and disassembly without complicated tools or operations, greatly improving ease of use.

[0043] In one embodiment of this utility model, please refer to Figure 1 The shielding component 2 is made of light-blocking material.

[0044] In this embodiment, the shielding component 2 is made of a light-shielding material to ensure effective blocking of the signal from the dental chair detection device (such as a photoelectric sensor). The light-shielding material must be opaque and light-blocking; for example, black plastic, metal materials (such as aluminum alloy or stainless steel), or opaque composite materials can be used. These materials not only have good light-shielding performance but also sufficient mechanical strength and durability. The shape and size of the shielding component 2 are designed according to the signal path of the detection device to ensure complete blocking of the light from the detection device. For example, the shielding component 2 can be designed as a rectangular baffle with an area sufficient to cover the light path of the detection device. In specific implementations, the shielding component 2 can be fixed to the transmission component 31 by screws, clips, or welding to ensure stable movement under the action of the lifting assembly 3. For example, when black plastic is used as the material of the shielding component 2, it can be manufactured by injection molding and connected to the transmission component 31 by a clip structure to achieve quick assembly and replacement.

[0045] The light-blocking material completely blocks light from the detection device, ensuring accurate triggering of the water system's start and stop when needed and preventing malfunctions caused by light leakage. When the dental chair's detection device is a photoelectric sensor, the light-blocking material's shield 2 effectively prevents light from entering the sensor, thereby achieving precise signal control. The light-blocking material's shield 2 has good durability and anti-aging properties, enabling long-term use in medical environments and reducing performance degradation due to material aging. For example, the metal shield 2 is not only corrosion-resistant but can also withstand frequent operation and cleaning, extending the device's lifespan.

[0046] This utility model also proposes a dental chair; please refer to [link / reference needed]. Figure 2The dental chair includes at least one shielding device 100 for a photoelectric induction rinsing system, at least one rinsing pipe, an instrument hanger 4, a water system, and a detection device. The specific structure of the shielding device 100 for the photoelectric induction rinsing system is as described in the above embodiments. Since this dental chair adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here. The instrument hanger 4 is provided with at least one receiving cavity 4a, each receiving cavity 4a being used to accommodate and limit a shielding device 100 for a photoelectric induction rinsing system or a rinsing pipe; the water system is used to rinse the rinsing pipe; and the detection device is used to detect the rinsing pipe or the shielding device 100 for the photoelectric induction rinsing system.

[0047] This utility model's dental chair integrates the technical solutions of the aforementioned photoelectric induction rinsing system's shielding device 100, forming a complete system. Specifically, the dental chair includes at least one photoelectric induction rinsing system shielding device 100, at least one rinsing pipe, an instrument holder 4, a water system, and a detection device. The specific structure of the photoelectric induction rinsing system shielding device 100 is as described above, including a mounting base 1, a shielding component 2, a lifting assembly 3, etc. The instrument holder 4 is provided with at least one receiving cavity 4a, each receiving cavity 4a can accommodate one photoelectric induction rinsing system shielding device 100 or one rinsing pipe. For example, the instrument holder 4 can be designed as a support with multiple partitioned cavities, the size and shape of each partitioned cavity matching the photoelectric induction rinsing system shielding device 100 or rinsing pipe, ensuring they can be stably placed on the instrument holder 4. The water system is connected to each rinsing pipe to provide rinsing water. The detection device is installed near the instrument holder 4 to detect the status of the rinsing pipe or the photoelectric induction rinsing system shielding device 100. For example, the detection device could be a photoelectric sensor that detects a change in signal when the flushing pipe is removed or replaced, triggering the water system to start or stop via the control system. This design allows the dental chair's water system to perform flushing operations efficiently and automatically, while ensuring accuracy and reliability.

[0048] In one embodiment of this utility model, please refer to Figure 1 The detection device is an infrared sensor or a photoelectric switch.

[0049] In one embodiment, the detection device employs an infrared sensor or a photoelectric switch to detect the state of the obstruction device 100 of the flushing pipe or photoelectric sensing flushing system. The infrared sensor detects the presence or absence of an object by emitting and receiving infrared light. For example, an infrared sensor can be installed inside each receiving cavity 4a of the instrument hanger 4. When the flushing pipe is removed or returned, the reflection or obstruction of infrared light triggers the sensor, thereby sending a signal to the control system. The photoelectric switch detects objects by utilizing the obstruction or reflection of a light beam, and typically includes a transmitter and a receiver. In a specific implementation, the photoelectric switch can be installed at the edge of the receiving cavity 4a of the instrument hanger 4. When the flushing pipe is removed, the light beam is exposed, the photoelectric switch triggers a signal, and the water system starts flushing. For example, for the infrared sensor, a reflective infrared sensor can be used, with its transmitter and receiver integrated at both ends. When an obstruction approaches, the infrared light is blocked, thereby stopping the water system from flushing. For the photoelectric switch, a through-beam photoelectric switch can be used, with the transmitter and receiver installed on opposite sides of the receiving cavity 4a. When the pipe is returned, the beam is cut off, the receiver detects the signal change, and stops triggering the water system flushing. This design allows the detection device to quickly and accurately detect the status of the flushing pipe, achieving automated water system control.

[0050] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A shielding device for a photoelectric induction rinsing system, applied to a dental chair, characterized in that, include: Mounting base, which is placed on the instrument rack of the dental chair; and A shielding component, which is slidably connected to the mounting base, is capable of shielding the detection device on the dental chair; When the mounting base is connected to the instrument rack of the dental chair, the shielding member can shield or expose the detection device, so as to stop or start the water system of the dental chair.

2. The shielding device of the photoelectric sensing flushing system as described in claim 1, characterized in that, The shielding device of the photoelectric induction washing system is equipped with a lifting component, which includes a transmission component. The transmission component is connected to the shielding component and is slidably connected to the mounting base.

3. The shielding device of the photoelectric sensing flushing system as described in claim 2, characterized in that, The lifting assembly also includes a driving component, which is movably connected to the transmission component. The driving component can drive the transmission component to move the shielding component to shield or expose the detection device.

4. The shielding device of the photoelectric sensing flushing system as described in claim 3, characterized in that, The mounting base has a mounting cavity, and the shielding member is slidably disposed in the mounting cavity. The mounting base is made of a light-transmitting material.

5. The shielding device of the photoelectric sensing flushing system as described in claim 4, characterized in that, The lifting assembly is provided with a positioning element, which is sleeved on the transmission element and is located inside the mounting cavity and abuts against the inner wall of the mounting cavity.

6. The shielding device of the photoelectric sensing flushing system as described in any one of claims 1 to 5, characterized in that, The mounting base has a limiting part, which abuts against the instrument hanger when the mounting base accommodates an instrument hanger that is positioned on the dental chair.

7. The shielding device of the photoelectric sensing flushing system as described in any one of claims 1 to 5, characterized in that, The shielding component is made of light-blocking material.

8. A dental chair, characterized in that, include: At least one shielding device for the photoelectric induction flushing system as described in any one of claims 1 to 7; At least one flushing pipe; An instrument rack, wherein the instrument rack is provided with at least one receiving cavity, each receiving cavity being used to accommodate a shielding device for limiting the photoelectric induction rinsing system or a rinsing pipe; A water system for flushing the flushing pipes; A detection device is used to detect obstructions in the flushing pipe or the photoelectric induction flushing system.

9. The dental chair as described in claim 8, characterized in that, The shielding device of the photoelectric induction rinsing system includes a driving component and a transmission component. The driving component is movably connected to the transmission component, the transmission component is connected to the shielding component, and the water system is electrically connected to the driving component.

10. The dental chair as described in claim 8, characterized in that, The detection device is an infrared sensor or a photoelectric switch.

Images