A table-top oral irrigator and method of operation thereof

Abstract

The present application relates to a kind of desktop oral irrigator and its working method, including water tank, main machine, hose, handle and spray head, the main machine includes shell and water pump, circuit board and pressure switch device located in shell, the pressure switch device includes the water outlet connector for being connected with hose at water pump water outlet end, water outlet connector side is equipped with microswitch, microswitch and water outlet connector between are equipped with with to trigger microswitch touch component, the touch component includes top rod and the diaphragm that can push top rod by outwardly bulging when water pressure increases in water outlet connector inside.The desktop oral irrigator of the present application is designed by the pressure switch device in pipeline, handle closes water outlet, and water pressure rises in pipeline, can control the shutdown of water pump in time, to solve the deficiency of existing desktop oral irrigator, play protection function, will play the role of protection water pump, gear and waterway to some extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of oral irrigator, in particular to a table type oral irrigator and its working method. BACKGROUND

[0002] Oral irrigator is an auxiliary tool for cleaning oral cavity, which uses the way of pulse water flow impact to clean teeth and dental crevice. Table type oral irrigator is to pump water through a hose to a handle with nozzle, valve and other devices on the handle through a main machine. The electrical control is designed in the main machine, and if the valve on the handle is closed, the water pump of the main machine is still in working state, which will cause the motor to be in locked-rotor state, the gear to be in torsion state and the waterway to be in high pressure state. This is a problem that the existing table type machine cannot solve.

[0003] If a switch is directly installed at the handle and linked with the valve, the problem can be solved, but it needs to connect wires from the handle to the main machine, which is high in cost and inconvenient to use. Therefore, the above problem is difficult to solve for the existing table type machine. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a table type oral irrigator and its working method, which can control the water pump to stop working in time after the handle is closed, and has protection function.

[0005] The present application adopts the following scheme: a table type oral irrigator, comprising a water tank, a main machine, a hose, a handle and a nozzle, wherein the main machine comprises a machine shell and a water pump, a circuit board and a pressure switch device located in the machine shell, the pressure switch device comprises a water outlet connecting piece arranged at the water outlet end of the water pump for connecting the hose, a micro switch is arranged beside the water outlet connecting piece, a touch assembly for triggering the micro switch is arranged between the micro switch and the water outlet connecting piece, and the touch assembly comprises a top rod and a diaphragm capable of pushing the top rod by bulging outward when the water pressure in the water outlet connecting piece increases.

[0006] Further, the touch assembly further comprises a fixing seat for pressing the edge part of the diaphragm around the water outlet connecting piece, and a communication hole is arranged in the inner side of the diaphragm and communicated with the water channel in the water outlet connecting piece.

[0007] Further, the fixing seat is a hollow structure, the top rod passes through the middle of the fixing seat, one end of the top rod abuts against the micro switch and the other end abuts against the diaphragm, and a return spring for pushing the top rod towards the diaphragm is arranged in the fixing seat.

[0008] Further, the fixed seat is fixedly connected to the water outlet connector by a screw, an annular part is arranged at one end of the diaphragm towards the water outlet connector, an annular groove adapted to the annular part of the diaphragm is arranged on the outer side of the water outlet connector, and a ring-shaped convex part with a triangular cross section is arranged on the end face of the fixed seat pressing the diaphragm.

[0009] Further, the water pump comprises a pump shell and a water outlet seat connected to the front end of the pump shell, a piston cavity is arranged in the water outlet seat, a piston is arranged in the piston cavity, and a driving device for driving the piston to reciprocate is arranged in the pump shell; a water outlet is arranged on the side of the water outlet seat and is connected to the water outlet connector, a water inlet is arranged on the upper side of the water outlet seat, a water outlet valve body for controlling the water inlet and the water outlet is arranged between the piston cavity and the water outlet, and a water inlet valve body for controlling the water inlet and the water inlet is arranged between the piston cavity and the water inlet.

[0010] Further, the nozzle is connected to the front end of the handle, a valve body assembly is arranged in the handle, the valve body assembly comprises a water channel, a water inlet cavity is arranged at the rear part of the water channel, a water passing cavity is arranged at the middle part of the water channel, a valve core for controlling the water inlet cavity and the water passing cavity to be connected or disconnected by reciprocating is arranged between the water inlet cavity and the water passing cavity, and a valve plug for controlling the valve body to reciprocate by rotating is arranged in the water passing cavity.

[0011] Further, a push button is arranged on the side of the handle, a rack is arranged on the inner side of the push button, the upper end of the valve plug is arranged to pass through the water channel and is provided with a tooth part engaged with the rack; a valve core spring for pushing the valve core forward is arranged at the rear end of the valve core, and a top rib for pushing the valve core backward is arranged on the peripheral part of the valve plug.

[0012] Further, the rear end of the nozzle extends into the handle and is in rotary sealing cooperation with the front end of the water channel, and a rotary knob connected to the front end of the handle is arranged on the nozzle.

[0013] Further, an extension sleeve is inserted into the front end of the water channel, the rear end of the nozzle passes through the middle of the extension sleeve, a press button is arranged on one side of the front part of the handle, a connecting part bent to the other side of the extension sleeve is arranged on the inner side of the press button, a buckle bent to the middle is arranged on the connecting part, an annular clamping groove matched with the buckle is arranged on the rear part of the nozzle, and a gap slot hole for the buckle to pass through is arranged on the extension sleeve.

[0014] Another technical scheme of the present application is a working method of the desktop oral irrigator, in use, the main machine is started, the water in the water tank is pumped to the handle through the water pump and the hose, and the water is sprayed out through the nozzle; when the handle is closed to stop water outlet, the water pressure in the pressure switch device is increased, the diaphragm is bulged outward and pushes the jacking rod, the jacking rod pushes the micro switch, and the water pump is controlled to be stopped.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] Through the pressure switch device design in the pipeline, the water pressure in the pipeline rises after the handle closes the water outlet, the water pump can be controlled to stop in time, thereby solving the deficiency of the existing table type oral irrigator, having the protection function, which can protect the water pump, gear and waterway to a certain extent, stable performance, and reducing the failure;

[0017] The handle designs the valve plug at the pressure relief end, so that when the valve core is closed, the valve plug is at one end of 0 pressure, and water leakage is not easy, so that the sealing problem of the valve plug is solved, and the valve plug is not easy to be pushed due to the large water pressure around the valve plug.

[0018] The piston cavity of the water pump adopts independent water inlet valve body and water outlet valve body to control water inlet and water outlet respectively, so that the valve body structure is simplified, production is easy, and stability is good.

[0019] In order to make the purpose, technical scheme and advantages of the present application more clear, specific examples and related drawings will be used to further illustrate the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall appearance perspective view of the embodiment of the present application;

[0021] Figure 2 is the internal structure perspective view of the host of the embodiment of the present application;

[0022] Figure 3 is the internal structure side view of the host of the embodiment of the present application;

[0023] Figure 4 is Figure 3 the A-A sectional view in the figure;

[0024] Figure 5 is Figure 4 the B-B sectional view in the figure;

[0025] Figure 6 is Figure 5 the local enlarged schematic view in the figure;

[0026] Figure 7 is the handle perspective view of the embodiment of the present application;

[0027] Figure 8 is the internal structure schematic view of the handle of the embodiment of the present application;

[0028] Figure 9 is the sectional view of the handle of the embodiment of the present application;

[0029] Figure 10 is the valve plug perspective view of the embodiment of the present application;

[0030] Figure 11is a button perspective view of the embodiment of the present application;

[0031] Explanation of reference numerals in the drawing: 100 - water tank, 200 - main body, 210 - water pump, 211 - pump housing, 212 - water outlet seat, 213 - piston cavity, 214 - piston, 215 - water outlet, 216 - water inlet, 217 - water outlet valve body, 218 - water inlet valve body, 219 - driving device, 220 - circuit board, 230 - pressure switch device, 231 - water outlet connecting piece, 232 - micro switch, 233 - top rod, 234 - diaphragm, 235 - fixing seat, 236 - return spring, 300 - hose, 400 - handle, 410 - valve body assembly, 411 - water channel, 412 - water inlet cavity, 413 - water passing cavity, 414 - valve core, 415 - valve plug, 416 - valve core spring, 417 - top rib, 418 - extension sleeve, 419 - tooth part, 420 - push button, 421 - rack, 430 - knob, 440 - press button, 441 - connecting part, 442 - buckle, 500 - spray head. DETAILED DESCRIPTION

[0032] It should be noted that the following detailed description is exemplary in nature and is intended to provide further description of the application. 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.

[0033] It is also important to note that the use of the term "or" in the context of the present application is to be interpreted as inclusive or, meaning one or the other and / or any combination thereof, unless otherwise indicated. It is further noted that the claims can be drafted to exclude any elements claimed in any such combination or to exclude any such combination itself.

[0034] As Figures 1-11As shown, a desktop oral irrigator comprises a water tank 100, a main machine 200, a hose 300, a handle 400 and a nozzle 500, the main machine 200 comprises a casing and a water pump 210, a circuit board 220 and a pressure switch device 230 located in the casing, a control panel is arranged on the casing of the main machine, the control panel is provided with a start button and a stop button, water is stored in the water tank, when used, water is pumped to the handle through the hose until the water is sprayed through the nozzle. The pressure switch device 230 comprises a water outlet connector 231 arranged at the water outlet end of the water pump and used to connect the hose, the water outlet connector 231 serves as a transition piece between the water pump and the hose and is provided with an interface used to connect the hose; a micro switch 232 is arranged beside the water outlet connector, the micro switch is welded on the circuit board, and a controller is arranged on the circuit board, the micro switch and the controller are electrically connected, and the signal output end of the controller is electrically connected with a motor in the water pump, so that the micro switch controls the water pump to stop through the controller; a touch assembly used to trigger the micro switch is arranged between the micro switch and the water outlet connector, the touch assembly comprises a top rod 233 and a diaphragm 234 capable of pushing the top rod outward by bulging when the water pressure in the water outlet connector increases; by increasing the pressure switch device between the hose and the water pump, when the valve on the handle is closed, the water pressure in the pipeline rises, a micro switch is pushed, and the water pump is immediately closed, so that the defects of the existing desktop oral irrigator are solved, the protection function is achieved, and the water pump, the gear and the water channel are protected to a certain extent.

[0035] In the embodiment, the touch assembly further comprises a fixing seat 235 used to press the edge part of the diaphragm around the water outlet connector, and a communication hole is arranged in the side part of the water outlet connector and communicates with the water channel in the water outlet connector; the diaphragm plays a sealing role, and when the pressure in the water outlet connector increases, the diaphragm can push the top rod outward by bulging, the top rod presses the micro switch, the micro switch obtains a signal to the controller, and the controller controls the water pump to stop.

[0036] In the embodiment, the fixing seat 235 is a hollow structure, the top rod passes through the middle of the fixing seat, one end of the top rod abuts against the micro switch, and the other end abuts against the diaphragm, a reset spring 236 is arranged in the fixing seat and used to push the top rod towards the diaphragm, and the reset spring is sleeved on the top rod.

[0037] The reset spring has three states: the original length of the spring, the length of the spring after assembly (the length when the pipeline is under small water pressure), and the length of the spring after compression (the length when the pipeline is under high pressure): when water is sprayed normally, the water pressure in the pipeline is small, and the spring is pre-pressed, so the diaphragm is not enough to push the top rod to trigger the micro switch.

[0038] Therefore, it is important to measure and calculate the spring parameters in the balanced state after the blockage:

[0039] If the membrane water contact diameter is 6mm, the water contact area is

[0040] ;

[0041] According to the test, the water pressure is The water pressure that can trigger the development, that is, the water pressure that triggers the switch is: ;

[0042] The water pressure on the action force of the ejector rod is ;

[0043] Hooke's law of elasticity indicates that within the elastic limit, the spring force f and the spring length x are proportional, that is, f=-kx, k is the elastic coefficient of the material, which is determined by the nature of the material, and the negative sign indicates that the spring force generated by the spring is opposite to the direction of its elongation (or compression).

[0044] Spring constant formula (unit: kgf / mm):

[0045] ;

[0046] Where d is the wire diameter, Dm is the spring diameter, N is the number of spring turns, and G is the rigidity modulus of the wire material. Because the oral irrigator is in a relatively humid environment, a stainless steel spring wire is selected, and G=7300.

[0047] We design d=0.5mm, the spring diameter Dm=3.5mm, and the spring turns=10

[0048] Then we can calculate

[0049] ;

[0050] The compression length of the spring ;

[0051] We design the spring compression length to be 7mm, so the total length of the spring is 9.3mm.

[0052] In the embodiment, the fixed seat 235 is fixedly connected to the water outlet connecting piece by a screw, and the membrane is provided with an annular part at one end facing the water outlet connecting piece. The outer side of the water outlet connecting piece is provided with an annular groove matched with the annular part of the membrane. The fixed seat is provided with an annular convex part with a triangular cross section on the end surface pressing the membrane. The annular convex part can ensure that the annular part of the membrane and the annular groove are matched more tightly, thereby improving the sealing performance.

[0053] In the embodiment, the water pump 210 includes a pump shell 211 and a water outlet seat 212 connected to the front end of the pump shell, the water outlet seat is provided with a piston cavity 213, the piston cavity is provided with a piston 214, the pump shell is provided with a driving device 219 for driving the piston to reciprocate; the side of the water outlet seat is provided with a water outlet 215 for connecting with a water outlet connector, the upper side of the water outlet seat is provided with a water inlet 216, the piston cavity and the water outlet are provided with a water outlet valve body 217 for controlling the opening and closing of the two, and the piston cavity and the water inlet are provided with a water inlet valve body 218 for controlling the opening and closing of the two; the bottom of the water tank is provided with a water outlet, and the water outlet is provided with a water outlet element, the lower end of the water outlet element is connected with the water inlet 216 of the water outlet seat; the water outlet valve body 217 and the water inlet valve body 218 are both composed of a connecting column and a diaphragm to form an umbrella-shaped structure, the connecting column is provided with a limiting large diameter part, the diaphragm of the water inlet valve body 218 is located on one side of the piston cavity, and the diaphragm of the water outlet valve body is located on one side of the water outlet; the piston cavity and the water outlet and the piston cavity and the water inlet are provided with water passing holes covered by the diaphragm and connecting holes for connecting the connecting column. The water pump of the oral irrigator core of Chinese patent CN114668539A, that is, the water pump, adopts an integrated valve body with upper and lower diaphragms to control water inlet and water outlet, the structure of the valve body is relatively complex, the manufacturing difficulty is relatively large, and the stability is relatively poor; and the piston cavity of the water pump is improved, the independent water inlet valve body and the water outlet valve body are adopted to control water inlet and water outlet respectively, the valve body structure is simplified, and the water pump is easy to produce and has good stability.

[0054] The driving device of the water pump is prior art, that is, the driving element recorded in Chinese patent CN114668539A oral irrigator core, including a motor, a gear, an end face gear, and a connecting rod, the motor drives the end face gear to rotate around the center axis through the gear, the upper end of the connecting rod is connected with the piston, and the lower end of the connecting rod is eccentrically connected with the end face gear.

[0055] In the embodiment, the spray head 500 is connected to the front end of the handle 400, and the handle 400 is internally provided with a valve body assembly 410, which comprises a water channel 411, the rear part of the water channel is provided with a water inlet cavity 412, the middle part of the water channel is provided with a water passing cavity 413, the water inlet cavity and the water passing cavity are provided with a valve core 414 for controlling the on-off of the two cavities through reciprocating motion, the water passing cavity is internally provided with a valve plug 415 for controlling the reciprocating motion of the valve body through rotation, the water inlet cavity and the water passing cavity are communicated through a water passing hole, the valve core is in T-shaped structure in cross section and the large end faces backward and the small end is located in the water passing hole, the opening and closing of the water passing hole are realized through the reciprocating motion of the valve core, the small end of the valve core is sleeved with sealing silica gel to improve the sealing effect, when the valve core moves backward, the sealing silica gel is away from the front end surface of the water passing hole, and water can enter the water passing hole; when the valve core moves forward, the sealing silica gel is tightly attached to the front end surface of the water passing hole, and water is blocked in the water inlet cavity and cannot enter the water passing hole, in this case, the water passing cavity is not under pressure, and water leakage does not occur at the valve plug, and the valve plug can be more easily rotated, and thus the push button can be more easily pushed and more labor-saving.

[0056] In the embodiment, the handle is provided with a push button 420 on the side surface, the inner side of the push button is provided with a rack 421, the upper end of the valve plug 415 passes through the water channel and is provided with a tooth part 419 engaged with the rack, the tooth part 419 is equivalent to a gear, and the transmission between the push button and the valve plug is realized through the gear and rack principle; the rear end of the valve core is provided with a valve core spring 416 for pushing the valve core forward, and the peripheral part of the valve plug is provided with a top rib 417 for pushing the valve core backward, the top rib is equivalent to a cam, and the top rib pushes the valve core backward to open when the valve plug rotates, and the valve core spring pushes the valve core forward to close in the position without the top rib.

[0057] The main technical point of the valve body assembly is that the valve plug is at the pressure relief end, so that when the valve core is closed, the valve plug is at the end of 0 pressure and is not easy to leak, and thus the sealing requirement is low, and the sealing problem of the valve plug is solved; at the same time, because the valve plug is at 0 pressure, the push button can be easily actuated, and the valve plug is not difficult to actuate because of the large water pressure around the valve plug.

[0058] In the embodiment, the rear end of the spray head extends into the handle and is in rotary sealing cooperation with the front end of the water channel, and the spray head is externally sleeved with a rotary knob 430 rotatably connected to the front end of the handle. The spray head is inserted into the handle, and the spray head and the rotary knob 430 have a 12-sided hole and a 12-sided retaining ring for cooperation, so as to realize the synchronous rotation of the two, and the rotation of the rotary knob can drive the rotation of the spray head, which is beneficial to the pointing of the spray head to a suitable position.

[0059] In the embodiment, the water channel front end is inserted with an extension sleeve 418, the outer peripheral part of the rear end of the extension sleeve is provided with a ring of convex rings, the inner hole wall of the water channel front end is provided with an annular groove matched with the convex rings, and the inner hole of the water channel front end is provided with a sealing ring which is fixed by being clamped in the middle by the hole step of the water channel inner hole and the rear end face of the extension sleeve; the nozzle rear end passes through the middle of the extension sleeve, one side of the handle front part is provided with a pressing button 440, the inner side of the pressing button is provided with a connecting part 441 bent to the other side of the extension sleeve, the connecting part is provided with a buckle 442 bent to the middle, the nozzle rear part is provided with an annular clamping groove matched with the buckle, and the extension sleeve is provided with a give way slot hole for the buckle to pass in; the nozzle is fixed by the buckle to avoid the nozzle being pushed out when water is sprayed, and the rotation of the nozzle is not affected; the nozzle can be pulled out and disassembled by pressing the buckle to disengage the annular clamping groove of the nozzle.

[0060] A working method of the desktop oral irrigator described above, in use, the start button on the main machine is pressed to start the main machine, the water in the water tank is pumped to the handle through the water pump and the hose, and the water is sprayed out through the nozzle, at this time, the push button on the handle is in an open state; when the handle temporarily closes the water outlet by pushing the push button, the water pressure in the pressure switch device increases, the diaphragm bulges outward and pushes the jack, the jack presses the micro switch, the micro switch obtains a signal to the controller, and the controller controls the water pump to stop; when the handle continues to open the water outlet by pushing the push button, the spring pushes the jack to reset, the pressing of the micro switch is released, the micro switch obtains a signal to the controller, and the controller controls the water pump to continue to start; after use, the stop button on the main machine is pressed to turn off the main machine.

[0061] Any of the technical solutions disclosed in the present application, unless otherwise stated, if a numerical range is disclosed, the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that the preferred numerical range is only one of the many implementable values with more obvious technical effects or representative values. Because there are too many values, it is impossible to enumerate them all, so the present application discloses some values to illustrate the technical solutions of the present application, and the above-mentioned values should not constitute a limitation on the protection scope of the present application.

[0062] If the present application discloses or involves mutually fixed and connected parts or structural parts, unless otherwise stated, the fixed connection can be understood as being able to be disassembled and fixedly connected (for example, connected by using bolts or screws), and can also be understood as being fixedly connected and not being disassembled (for example, riveting, welding), of course, the mutually fixed connection can also be replaced by an integral structure (for example, manufactured by using a casting process to form integrally, except that it is obviously impossible to use an integral forming process).

[0063] In addition, the terms used to represent the positional relationship or shape in any of the technical solutions disclosed in the present application include states or shapes similar, analogous or close to them, unless otherwise stated.

[0064] Any of the components provided by the present application can be assembled from multiple individual components or manufactured as a single component by one-piece forming process.

[0065] The above description is only the preferred embodiment of the present application, and is not intended to limit the other forms of the present application. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments. However, any simple modification, equivalent change and modification made to the above embodiments without departing from the technical solution of the present application, and in accordance with the technical essence of the present application, still belongs to the protection scope of the technical solution of the present application.

Claims

1. A desktop oral irrigator comprising a water tank, a main unit, a hose, a handle, and a tip, characterized in that: The host comprises a casing and a water pump, a circuit board and a pressure switch device in the casing, the pressure switch device comprises a water outlet connector arranged at the water outlet end of the water pump for connecting a hose, a micro switch is arranged beside the water outlet connector, a touch assembly for triggering the micro switch is arranged between the micro switch and the water outlet connector, the touch assembly comprises a top rod and a diaphragm capable of pushing the top rod by bulging outward when the water pressure in the water outlet connector increases; the spray head is connected to the front end of the handle, a valve body assembly is arranged in the handle, the valve body assembly comprises a water channel, a water inlet cavity is arranged at the rear of the water channel, a water passing cavity is arranged in the middle of the water channel, a valve core for controlling the water passing cavity and the water inlet cavity is arranged between the water passing cavity and the water inlet cavity, a valve plug for controlling the reciprocating movement of the valve body is arranged in the water passing cavity; a push button is arranged on the side of the handle, a rack is arranged inside the push button, the top end of the valve plug extends out of the water channel and is provided with a tooth portion engaged with the rack; a valve core spring is arranged at the rear end of the valve core for pushing the valve core forward, a top rib is arranged on the periphery of the valve plug for pushing the valve core backward; the rear end of the spray head extends into the handle and is in rotary sealing cooperation with the front end of the water channel.

2. The table-top waterpik of claim 1, wherein: The touch assembly further comprises a fixing seat for pressing the periphery of the diaphragm towards the water outlet connector, a communication hole is arranged in the side of the water outlet connector and communicates with the water channel in the water outlet connector.

3. The table-top waterpik of claim 2, wherein: The fixing seat is a hollow structure, the top rod passes through the middle of the fixing seat, one end of the top rod abuts against the micro switch and the other end abuts against the diaphragm, a reset spring is arranged in the fixing seat for pushing the top rod towards the diaphragm.

4. The table-top waterpik of claim 3, wherein: The fixing seat is fixedly connected to the water outlet connector by a screw, one end of the diaphragm is provided with an annular portion, the outer side of the water outlet connector is provided with an annular groove matched with the annular portion of the diaphragm, a ring-shaped convex portion with a triangular cross section is arranged on the end surface of the fixing seat for pressing the diaphragm.

5. The desktop waterpik of claim 1, wherein: The water pump comprises a pump casing and a water outlet seat connected to the front end of the pump casing, a piston cavity is arranged in the water outlet seat, a piston is arranged in the piston cavity, a driving device is arranged in the pump casing for driving the piston to reciprocate; a water outlet is arranged on the side of the water outlet seat and is connected to the water outlet connector, a water inlet is arranged on the upper side of the water outlet seat, a water outlet valve body for controlling the water inlet and the piston cavity is arranged between the water inlet and the piston cavity, a water inlet valve body for controlling the water inlet and the piston cavity is arranged between the water inlet and the piston cavity.

6. The desktop waterpik of claim 1, wherein: A rotary knob is rotatably connected to the front end of the handle.

7. The table-top waterpik of claim 1, wherein: An extension sleeve is inserted into the front end of the water channel, the rear end of the spray head passes through the middle of the extension sleeve, a press button is arranged on one side of the front part of the handle, a connecting portion is arranged inside the press button and extends to the other side of the extension sleeve, a buckle is arranged on the connecting portion and extends to the middle, an annular clamping groove is arranged on the rear part of the spray head and is matched with the buckle, a gap slot hole is arranged on the extension sleeve for the buckle to pass through.

8. A method of operating a desktop waterpik as defined in claim 1, wherein: In use, the host is started, the water in the water tank is pumped to the handle through the water pump and the hose, and the water is sprayed through the spray head; when the handle is closed, the water pressure in the pressure switch device increases, the diaphragm bulges outward and pushes the top rod, the top rod pushes the micro switch, and the water pump is controlled to stop.

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