CN220124863U - Desk type tooth-flushing device - Google Patents

Abstract

The utility model relates to a desk type tooth flushing device which comprises a water tank, a host, a hose, a handle and a spray head, wherein the host comprises a shell, a water pump, a circuit board and a pressure switch device, the water pump, the circuit board and the pressure switch device are positioned in the shell, the pressure switch device comprises a water outlet connecting piece which is arranged at the water outlet end of the water pump and is used for connecting the hose, a micro switch is arranged beside the water outlet connecting piece, a touch assembly used for triggering the micro switch is arranged between the micro switch and the water outlet connecting piece, and the touch assembly comprises a push rod and a diaphragm which can push the push rod through outwards swelling when the water pressure in the water outlet connecting piece is increased. According to the desk type tooth flushing device, the pressure switch device in the pipeline is designed, after the handle is closed, the water pressure in the pipeline rises, and the water pump can be controlled to be turned off in time, so that the defects of the existing desk type tooth flushing device are overcome, the protection function is achieved, and the water pump, the gears and the waterway can be protected to a certain extent.

Description

Desk type tooth-flushing device

Technical Field

The utility model relates to the field of tooth flushers, in particular to a desk type tooth flusher.

Background

The tooth cleaning device is an auxiliary tool for cleaning the oral cavity, and is used for cleaning teeth and tooth gaps in a pulse water flow impact mode. The desk type tooth-flushing device is characterized by that it utilizes a main machine to pump water into a handle by means of hose, and on the handle the spray head and valve are set. The electric appliance control is designed in the host, and if the valve on the handle is closed, the water pump of the host is still in a working state, so that the motor is in a locked state, the gear is in a torsion state, and the waterway is in a high-pressure state, which is a problem which cannot be solved by the existing desktop.

If a switch linked with the valve is directly arranged at the handle, although the problem can be solved, the switch needs to be connected with a lead from the handle to a host, the cost is high, and the use is inconvenient; the above problems are difficult to solve with existing desktops.

Disclosure of Invention

Therefore, the utility model aims to provide the desk type tooth washer, which can timely control the water pump to be turned off after the handle is closed to discharge water and has a protection function.

The utility model is realized by adopting the following scheme: the utility model provides a desk-top tooth flusher, includes water tank, host computer, hose, handle and shower nozzle, the host computer includes casing and the water pump, circuit board and the pressure switch device that are located the casing, the pressure switch device is including locating the water outlet end of water pump and be used for connecting the play water connecting piece of hose, play water connecting piece side and be equipped with micro-gap switch, be equipped with between micro-gap switch and the play water connecting piece and be used for triggering micro-gap switch's touch subassembly, touch the subassembly and include the ejector pin and can promote the diaphragm of ejector pin through outwards swell when the inside water pressure of play water connecting piece increases.

Further, the touch assembly further comprises a fixing seat which presses the peripheral edge of the diaphragm towards the direction of the water outlet connecting piece, and a communication hole which is positioned at the inner side of the diaphragm and communicated with the water channel inside the water outlet connecting piece is formed in the side part of the water outlet connecting piece.

Further, the fixing seat is of a hollow structure, the ejector rod passes through the middle of the fixing seat, one end of the ejector rod is abutted against the micro switch, the other end of the ejector rod is abutted against the diaphragm, and a reset spring for pushing the ejector rod towards the direction of the diaphragm is arranged in the fixing seat.

Further, the fixing seat is fixedly connected to the water outlet connecting piece through a screw, an annular part is arranged at one end of the diaphragm, facing the water outlet connecting piece, of the outer side of the water outlet connecting piece, an annular groove matched with the annular part of the diaphragm is formed in the outer side of the water outlet connecting piece, and a circle of annular protruding part with a triangular section is arranged on the end face of the fixing seat, which is pressed by the diaphragm.

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 body; the side part of the water outlet seat is provided with a water outlet which is in butt joint with the water outlet connecting piece, the upper side of the water outlet seat is provided with a water inlet, a water outlet valve body which controls the on-off of the piston cavity and the water outlet is arranged between the piston cavity and the water outlet, and a water inlet valve body which controls the on-off of the piston cavity and the water inlet is arranged between the piston cavity and the water inlet.

Further, the shower nozzle is connected in the handle front end, and the handle is inside to be equipped with the valve body subassembly, the valve body subassembly includes the water course, the water course rear portion is equipped with the inlet chamber, and the water course middle part is equipped with the water passing chamber, is equipped with the case that controls both break-make through reciprocating motion between inlet chamber and the water passing chamber, be equipped with the valve plug through rotation control valve body reciprocating motion in the water passing chamber.

Further, a push button is arranged on the side face of the handle, a rack is arranged on the inner side of the push button, and the upper end of the valve plug penetrates through the water channel and is provided with a tooth part meshed with the rack; the rear end of the valve core is provided with a valve core spring for pushing the valve core forwards, and the periphery of the valve bolt is provided with a pushing rib for pushing the valve core backwards.

Further, the rear end of the spray head stretches into the handle and is in rotary sealing fit with the front end of the water channel, and a knob which is rotatably connected to the front end of the handle is sleeved outside the spray head.

Further, the water course front end is pegged graft and is had the extension cover, the shower nozzle rear end is passed from the extension cover centre, handle front portion one side is equipped with presses the button, it turns to the connecting portion that extends the cover opposite side to press the button inboard to be equipped with, be equipped with on the connecting portion and turn to the buckle in the middle of, the shower nozzle rear portion is equipped with buckle complex annular draw-in groove, extend and set up the slotted hole of stepping down that supplies the buckle to penetrate on the cover.

Compared with the prior art, the utility model has the following beneficial effects:

(1) Through the design of the pressure switch device in the pipeline, after the handle is closed to discharge water, the water pressure in the pipeline rises, and the water pump can be controlled to be turned off in time, so that the defects of the traditional desk type tooth washer are overcome, the desk type tooth washer has a protection function, the functions of protecting the water pump, the gear and the waterway can be achieved to a certain extent, the performance is stable, and the faults are reduced;

(2) The handle is used for designing the valve plug at the pressure release end, so that when the valve core is closed, the valve plug is positioned at one end of 0 pressure, water leakage is not easy to occur, the requirement on tightness is low, and the sealing problem of the valve plug is solved; meanwhile, the push button is not easy to stir due to the fact that the valve bolt has large rotation resistance because of large water pressure around the valve bolt;

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

The present utility model will be further described in detail below with reference to specific embodiments and associated drawings for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.

Drawings

FIG. 1 is a perspective view of the overall appearance of an embodiment of the present utility model;

FIG. 2 is a perspective view of the internal structure of a host according to an embodiment of the present utility model;

FIG. 3 is a side view of the internal construction of a host according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a cross-sectional view B-B of FIG. 4;

FIG. 6 is an enlarged schematic view of a portion of FIG. 5;

FIG. 7 is a perspective view of a handle according to an embodiment of the present utility model;

FIG. 8 is a schematic view showing the internal construction of a handle according to an embodiment of the present utility model;

FIG. 9 is a cross-sectional view of a handle according to an embodiment of the utility model;

FIG. 10 is a perspective view of a valve plug according to an embodiment of the present utility model;

FIG. 11 is a perspective view of a button according to an embodiment of the present utility model;

the reference numerals in the figures illustrate: 100-water tank, 200-host, 210-water pump, 211-pump housing, 212-water outlet seat, 213-piston chamber, 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 switching device, 231-water outlet connector, 232-micro switch, 233-ejector pin, 234-diaphragm, 235-fixed seat, 236-return spring, 300-hose, 400-handle, 410-valve body assembly, 411-water channel, 412-water inlet chamber, 413-water passing chamber, 414-valve core, 415-valve plug, 416-valve core spring, 417-ejector rib, 418-extension sleeve, 419-tooth, 420-push button, 421-rack, 430-knob, 440-push button, 441-connector, 442-buckle, 500-shower nozzle.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the utility model. Unless defined otherwise, 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 utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

As shown in fig. 1 to 11, a desk type tooth cleaning device comprises a water tank 100, a host 200, a hose 300, a handle 400 and a spray head 500, wherein the host 200 comprises a shell, a water pump 210, a circuit board 220 and a pressure switch device 230, which are arranged in the shell, a control panel is arranged on the shell of the host, a start key and a stop key are arranged on the control panel, water is stored in the water tank, and when the desk type tooth cleaning device is used, the water is pumped to the handle through the hose until the water is sprayed out through the spray head. The pressure switch device 230 comprises a water outlet connecting piece 231 arranged at the water outlet end of the water pump and used for connecting a hose, wherein the water outlet connecting piece 231 is used as a transition piece between the water pump and the hose and is provided with an interface used for connecting the hose; the water outlet connecting piece is provided with a micro switch 232 at the side, the micro switch is welded on the circuit board, the circuit board is provided with a controller, the micro switch is electrically connected with a signal input end of the controller, and a signal output end of the controller is electrically connected with a motor in the water pump so as to realize that the micro switch controls the water pump to be turned off through the controller; a touch assembly for triggering the micro switch is arranged between the micro switch and the water outlet connecting piece, and comprises a push rod 233 and a diaphragm 234 capable of pushing the push rod by outwards swelling when the water pressure in the water outlet connecting piece is increased; according to the utility model, by adding the design of the pressure switch device between the hose and the water pump, after the valve on the handle is closed, the water pressure in the pipeline rises, and meanwhile, the micro switch is pushed to immediately close the water pump, so that the defect of the traditional desk type tooth flushing device is overcome, the protection function is realized, and the water pump, the gear and the waterway can be protected to a certain extent.

In this embodiment, the touch assembly further includes a fixing seat 235 for pressing the peripheral edge of the diaphragm toward the direction of the water outlet connector, and the side portion of the water outlet connector is provided with a communication hole which is located at the inner side of the diaphragm and is communicated with the water channel inside the water outlet connector; the diaphragm plays a sealing role, and when the internal pressure of the water outlet connecting piece is increased, the ejector rod can be outwards bulged to push the ejector rod, the ejector rod pushes the micro switch, the micro switch obtains signals to the controller, and the controller controls the water pump to be turned off.

In this embodiment, the fixing seat 235 is of a hollow structure, the ejector rod passes through the middle of the fixing seat, one end of the ejector rod is abutted against the micro switch, the other end of the ejector rod is abutted against the diaphragm, a reset spring 236 for pushing the ejector rod towards the direction of the diaphragm is arranged in the fixing seat, and the reset spring is sleeved on the ejector rod.

The return spring has three states: original length of the spring, length of the assembled spring (length of the pipe at low water pressure), length of the compressed spring (length of the pipe at high pressure): when water is sprayed normally, the water pressure in the pipeline is small, and the spring is preloaded, so that the diaphragm is insufficient to push the ejector rod to trigger the micro switch.

It is important to measure the spring parameters in the balanced state after the plugging:

let the diameter of the diaphragm touch water be 6mm, then touch water area

；

According to the test, the water pressure isThe development can be triggered, namely the water pressure of the trigger switch is as follows:；

the acting force of the water pressure on the ejector rod is；

The law of hooke's elasticity states that: within the elastic limit, the spring force f of the spring is proportional to the length x of the spring, i.e. f= -kx, k is the elastic coefficient of the substance, which is determined by the nature of the material, the negative sign indicating that the spring force is generated in the opposite direction to its extension (or compression).

Spring constant formula (unit: kgf/mm):

；

wherein d is the wire diameter, dm is the middle diameter of the spring, N is the number of turns of the spring, G is the rigidity modulus of the wire, and g=7300 is the stainless steel spring wire selected because the tooth irrigator is in a relatively humid environment;

we design d=0.5 mm, the median diameter Dm of the spring=3.5 mm, the number of turns of the spring=10

Then it can be calculated

；

Compression length of spring；

We designed the compressed length of the spring to be 7mm, then the total length of the spring was 9.3mm.

In this embodiment, fixing base 235 passes through screw fixed connection on the play water connecting piece, the diaphragm is equipped with annular portion towards play water connecting piece one end, play water connecting piece outside portion be equipped with the annular groove of the annular portion adaptation of diaphragm, be equipped with the round on the terminal surface that the fixing base compresses tightly the diaphragm and take the shape of triangle-shaped's annular convex part, the annular convex part can guarantee that complex between annular portion and the annular groove of diaphragm is more tight, improves sealing performance.

In this embodiment, the water pump 210 includes a pump housing 211 and a water outlet seat 212 connected to the front end of the pump housing, a piston cavity 213 is disposed in the water outlet seat, a piston 214 is disposed in the piston cavity, and a driving device 219 for driving the piston to reciprocate is disposed in the pump body; a water outlet 215 which is in butt joint with the water outlet connecting piece is arranged at the side part of the water outlet seat, a water inlet 216 is arranged at the upper side of the water outlet seat, a water outlet valve body 217 for controlling the on-off of the piston cavity and the water outlet is arranged between the piston cavity and the water outlet, and a water inlet valve body 218 for controlling the on-off of the piston cavity and the water inlet is arranged between the piston cavity and the water inlet; a water outlet is arranged at the bottom of the water tank, a water outlet is arranged at the water outlet, and the lower end of the water outlet is in butt joint with the water inlet 216 of the water outlet seat; the water outlet valve body 217 and the water inlet valve body 218 both form an umbrella-shaped structure by a connecting column and a diaphragm, the connecting column is provided with a limit large-diameter part, the diaphragm of the water inlet valve body 218 is positioned at one side of the piston cavity, and the diaphragm of the water outlet valve body is positioned at one side of the water outlet; water passing holes covered by the membrane and connecting holes used for penetrating the connecting column are distributed between the piston cavity and the water outlet and between the piston cavity and the water inlet. The Chinese patent CN114668539A is a tooth-flushing device core, namely a water pump, adopts an integral valve body with an upper diaphragm and a lower diaphragm to control water inlet and water outlet, has a complex structure, is difficult to manufacture and has poor stability; the water pump of the utility model improves the piston cavity, adopts the independent water inlet valve body and the independent water outlet valve body to respectively control water inlet and water outlet, simplifies the valve body structure, and has easy production and good stability.

The driving device of the water pump is a driving piece recorded in the prior art, namely the tooth punching machine core of China patent CN114668539A, and comprises a motor, a gear, a face gear and a connecting rod, wherein the motor drives the face gear to rotate around the center of the motor through the gear, the upper end of the connecting rod is connected with a piston, and the lower end of the connecting rod is eccentrically hinged with the face gear.

In this embodiment, the spray head 500 is connected to the front end of the handle 400, a valve body assembly 410 is disposed in the handle 400, the valve body assembly 410 includes a water channel 411, a water inlet cavity 412 is disposed at the rear of the water channel, a water passing cavity 413 is disposed in the middle of the water channel, a valve plug 414 for controlling on-off of the water inlet cavity and the water passing cavity through reciprocating motion is disposed in the water passing cavity, the water inlet cavity and the water passing cavity are communicated through a water passing hole, the cross section of the valve plug is in a T-shaped structure, the large end faces backwards, the small end is located in the water passing hole, opening and closing of the water passing hole are achieved through reciprocating motion of the valve plug, sealing silica gel is sleeved on the small end of the valve plug to improve sealing effect, and when the valve plug moves backwards, the sealing silica gel is far away from the front end face of the water passing hole, and water can enter the water passing hole; when the valve core moves forward, the sealing silica gel clings to the front end surface of the water passing hole, water is blocked in the water inlet cavity and cannot enter the water passing hole, under the condition, the water passing cavity is pressureless, water leakage can not occur at the valve plug, and the valve plug can be easier to rotate when the valve plug is required to rotate, and the valve plug cannot rotate easily due to overlarge pressure in the water passing cavity, so that the valve plug is easier and more labor-saving when the push button is pushed.

In this embodiment, a push button 420 is provided on the side of the handle, a rack 421 is provided on the inner side of the push button, the upper end of the valve plug 415 passes through the water channel and is provided with a tooth portion 419 meshed with the rack, the tooth portion 419 corresponds to a gear, and transmission is realized between the push button and the valve plug by adopting a gear rack principle; the valve core is provided with a valve core spring 416 for pushing the valve core forwards at the rear end, a pushing rib 417 for pushing the valve core backwards is arranged on the periphery of the valve plug, the pushing rib is equivalent to a cam, the pushing rib can push the valve core backwards to open when the valve plug rotates, and the valve core spring pushes the valve core forwards to close at the position without the pushing rib.

The valve body assembly has the main technical points that the valve plug is positioned at the pressure release end, so that when the valve core is closed, the valve plug is positioned at one end of 0 pressure, water leakage is not easy to occur, the requirement on tightness is low, and the sealing problem of the valve plug is solved; meanwhile, because the valve plug is at 0 pressure, the push button can be easily shifted, and the valve plug is not easy to shift due to large rotation resistance caused by large water pressure around the valve plug.

In this embodiment, the rear end of the spray head extends into the handle and is in rotary sealing fit with the front end of the water channel, and the spray head is sleeved with a 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 knob 430 are provided with a 12-sided polygonal hole and a 12-sided polygonal check ring which are matched with each other, so that synchronous rotation of the spray head and the knob is realized, and the knob can drive the spray head to rotate by rotating, so that the spray head is beneficial to pointing to a proper position.

In this embodiment, the front end of the water channel is inserted with an extension sleeve 418, the periphery of the rear end of the extension sleeve is provided with a circle of convex ring, the inner hole wall of the front end of the water channel is provided with an annular groove matched with the convex ring, the inner hole of the front end of the water channel is provided with a sealing ring, and the sealing ring is clamped between the hole step of the inner hole of the water channel and the rear end face of the extension sleeve for fixation; the rear end of the spray head passes through the middle of the extension sleeve, one side of the front part of the handle is provided with a press button 440, the inner side of the press button is provided with a connecting part 441 turning to the other side of the extension sleeve, the connecting part is provided with a buckle 442 turning to the middle, the rear part of the spray head is provided with an annular clamping groove matched with the buckle, and the extension sleeve is provided with a yielding slot for the buckle to pass through; the spray head is fixed through the buckle, so that the spray head is ejected when spraying water is avoided, and meanwhile, the rotation of the spray head is not influenced; the buckle is separated from the annular clamping groove of the spray head by pressing the press button, so that the spray head can be pulled out and detached.

Any of the above-described embodiments of the present utility model disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the utility model, and the numerical values listed above should not limit the protection scope of the utility model.

If the utility model discloses or relates to components or structures fixedly connected with each other, then unless otherwise stated, the fixed connection is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).

In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.

Any part provided by the utility model can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.

The above description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims (7)

1. The utility model provides a desk-top tooth ware that washes, includes water tank, host computer, hose, handle and shower nozzle, its characterized in that: the host comprises a shell, a water pump, a circuit board and a pressure switch device, wherein the water pump, the circuit board and the pressure switch device are positioned in the shell, the pressure switch device comprises a water outlet connecting piece which is arranged at the water outlet end of the water pump and used for connecting a hose, a micro switch is arranged beside the water outlet connecting piece, a touch assembly used for triggering the micro switch is arranged between the micro switch and the water outlet connecting piece, and the touch assembly comprises a push rod and a diaphragm which can push the push rod through outwards swelling when the water pressure in the water outlet connecting piece increases.

2. The bench top dental rinse of claim 1 wherein: the touch assembly further comprises a fixing seat which presses the peripheral edge of the diaphragm towards the direction of the water outlet connecting piece, and the side part of the water outlet connecting piece is provided with a communication hole which is positioned at the inner side of the diaphragm and communicated with a water channel inside the water outlet connecting piece.

3. The bench top dental rinse of claim 2 wherein: the fixing seat is of a hollow structure, the ejector rod passes through the middle of the fixing seat, one end of the ejector rod is abutted against the micro switch, the other end of the ejector rod is abutted against the diaphragm, and a reset spring for pushing the ejector rod towards the direction of the diaphragm is arranged in the fixing seat.

4. A bench top dental rinse as in claim 3 wherein: the fixing seat is fixedly connected to the water outlet connecting piece through a screw, an annular part is arranged at one end of the diaphragm, which faces the water outlet connecting piece, an annular groove matched with the annular part of the diaphragm is arranged at the outer side part of the water outlet connecting piece, and a circle of annular convex part with a triangular section is arranged on the end face of the fixing seat, which compresses the diaphragm.

5. The bench top dental rinse of claim 1 wherein: the shower nozzle is connected in the handle front end, and the handle is inside to be equipped with the valve body subassembly, the valve body subassembly includes the water course, the water course rear portion is equipped with the inlet chamber, and the water course middle part is equipped with the water cavity, is equipped with the case that controls both break-make through reciprocating motion between inlet chamber and the water cavity, be equipped with the valve plug through rotation control valve body reciprocating motion in the water cavity that crosses.

6. The bench top dental rinse of claim 5 wherein: the side surface of the handle is provided with a push button, the inner side of the push button is provided with a rack, and the upper end of the valve plug penetrates through the water channel and is provided with a tooth part meshed with the rack; the rear end of the valve core is provided with a valve core spring for pushing the valve core forwards, and the periphery of the valve bolt is provided with a pushing rib for pushing the valve core backwards.

7. The bench top dental rinse of claim 5 wherein: the shower nozzle rear end is passed from extending the cover centre, handle front portion one side is equipped with presses the button, press the button inboard to be equipped with turn to the connecting portion that extends the cover opposite side, be equipped with on the connecting portion turn to middle buckle, the shower nozzle rear portion be equipped with buckle complex annular draw-in groove, extend and set up the slotted hole of stepping down that supplies the buckle to penetrate.