CN1030101C - Automatic faucet - Google Patents

Abstract

An automatic water discharge outlet can realize automatic operation only by a small battery and provide with continuously water supply only by a button or a switch. A valve component can turn on/off water flow only by a small electric power and a small water pressure difference, and mechanically or electrically realize continuous water supply. Water supply temperature can be adjusted by a manual button mounted outside the water outlet basing on mixing proportion of cold and hot water.

Description

Automatic faucet

The present invention relates to a kind of faucet, the water supply of this faucet and to cut off the water supply be to the identification of reverberation response and operate by a sensor, more particularly, relate to a kind of faucet, it is that power supply by a small cell comes the valve that supplies water and cut off the water supply is operated, and if necessary, the identification of tube sensor is not how, can supply water continuously.

Traditional automatic faucet, for example, U.S. Patent number 4,709, a kind of faucet of 728 adopts an electromagnetic coil and a diaphragm valve, thereby needs bigger power supply to be used to cut off the operation of current.Because its power consumption is bigger, therefore this traditional automatic faucet must adopt industrial power or a big storage battery.A kind of like this faucet usually produces crash owing to the impact of water when its valve opening and closing, and its component also have the shortcoming of quick wearing and tearing.

This traditional automatic faucet is also just by just operating under the identification response of a sensor to a reverberation, so that, a user uses to be stored in the bucket or in the washtub when needing continuous water supply, like this, a reverberation, hand for example, must remain within the identification range of sensor satisfy up to supplying water till, thereby inconvenient shortcoming is arranged.

The purpose of this invention is to provide and a kind ofly can replace industrial power or the automatic faucet that big storage battery is operated, and this faucet can be contained in the place that does not have power line, to eliminate the above-mentioned shortcoming of traditional automatic faucet with a little dryelement cell.

Another object of the present invention provide a kind of when needed no matter the identification of reverberation how and automatic faucet that can continuous water supply.

A further object of the present invention provides a kind of automatic faucet that can control supply water temperature.

To achieve these goals, the present invention has adopted a kind of valve member, and this valve member can be used for opening and closing the operation of water supply under the power supply of a small capacity and hydraulic pressure.

Automatic faucet of the present invention comprises: be contained in the valve unit in the valve unit chamber in the valve body, this valve unit comprises:

A sleeve integrally has a larger-diameter anterior cylinder barrel and the rear portion cylinder barrel than minor diameter, and opens wide at its front end; This rear portion cylinder barrel has a plurality of inlet holes and is centered around with well-regulated interval on the sidewall of this cylinder barrel, also has an aperture at the center of this cylinder barrel rear wall, and anterior cylinder barrel then has a water outlet and a camshaft hole is used for holding a camshaft;

A piston can be reciprocating in the cylinder barrel of the rear portion of sleeve pipe, and have a rear piston part and be configured to a plurality of holes, also has a front piston part to be configured to a truncated cone shape opening, and these two piston pieces connect with bolt; A reduction valve is contained in the piston and partly is received and enters opening, also has a volute spring on this reduction valve it is pressed to the front;

The anti-shotpin of hole plug, the one end is fixed on the center of rear piston part, and the other end then passes through a hole;

An operative pin is fixed on the reduction valve to be operated to drive this valve unit;

Spiral spring is contained between the rear wall of rear piston portion and sleeve pipe and pushes piston to front with faint strength;

Lining is contained in the anterior cylinder barrel of sleeve pipe with the travelling forward of limited piston, and it is corresponding with the camshaft hole of sleeve pipe also to have disposed a camshaft hole; And

A piston seat is contained in the rear end of lining; And a valve actuator is contained in the driving device chamber of a valve body, and this valve actuator comprises:

A camshaft has a cam, and is installed between valve unit chamber and the driving device chamber on its top; A motor; A power transmission gear chain is used for being meshed with the axle and the camshaft of motor;

A sensor insert is contained in the rear end of camshaft; Video breaker with sensor is installed round the periphery of sensor insert;

Substitute as described sensor insert and video breaker, the circumferential upper part of a cam wheel is cut the sector part that prescinds one 90 degree, and have a stopper and be contained in 90 degree that are positioned at this cam wheel in the driving device chamber and cut part, and the motor arrangement is done camshaft clockwise or counterclockwise direction is alternately rotated;

This faucet also comprises: be used for mechanically operating continuously discharge water, a continuous water supply mechanism comprises:

A continuous water supply button has a promotion face and is used for promoting operative pin, also has a cam adapter lug boss and is used for cam is remained on the position that parallels with pin, and this button passes a plate and installs the action of work front and back;

Lever arrangement is done the seesaw type motion onboard and is connected with button with the one end;

Automatically operating switching button for one is contained on the other end of lever;

A P cock is contained on the valve body to work with button one; And

Blade-shaped spring dress unclamps to prevent button from deviating under promotion state forward onboard;

This faucet comprises the continuous water supply of an electric operation, between logic that switching circuit is contained in control wiring and the one shot multivibrator and a switching switch be contained on the housing and and be connected with circuit;

This faucet comprises that as the sub of circuit, a timer circuit and a time set circuit are connected to an one shot multivibrator, and when being communicated with, this faucet is continuous water supply in the time of setting just;

This faucet also comprises, with manually regulating water temperature, form above the valve unit chamber of a mixing valve chamber in valve body, and be connected with cooling water inlet by a cold water channel, and be connected with hot water inlet by a hot water channel, also be connected with the valve unit chamber by a connecting port; Mixing valve has a curve bath therebetween and enters in another chamber and go to allow hot water or cold water's chamber of flowing through, and this mixing valve heart therein also has the through hole in a polygonal cross section to be used for holding a mixing valve operator; And a mixing valve operator comprises that an operating stem puts in through hole with its rear end and its front end is loaded onto a temperature control handle, and this knob is positioned at the outside of housing so that this mixing valve of manual operation.

Brief Description Of Drawings:

Fig. 1 is the side view of cutting open according to the part of an automatic faucet of the present invention;

Fig. 2 is the front elevation of the automatic faucet among Fig. 1;

Fig. 3 A is according to the transverse sectional view of a valve member of the present invention under the state that supplies automatically, cuts off the water supply;

Fig. 3 B is the transverse sectional view of valve member under the continuous water supply state;

Fig. 4 A is the vertical sectional view of valve member, shows the closed condition of the valve unit under the state that supplies automatically, cuts off the water supply;

Fig. 4 B is the vertical sectional view of valve member, shows the opening state of the valve unit under the state that supplies automatically, cuts off the water supply;

Fig. 5 A is the transverse sectional view according to valve body of the present invention;

Fig. 5 B is the vertical sectional view of the valve body among Fig. 5 A;

Fig. 5 C is the rear view of a valve body spare of the valve body among Fig. 5 A;

Fig. 6 is the perspective view according to a mixing valve of the present invention;

Rear view after the mixing valve that Fig. 7 A is a valve body spare with bonnet has been removed combines shows this mixing valve and is in the state that allows to flow out the hot water or cold water simultaneously;

Fig. 7 B is the rear view of valve body spare, and mixing valve then is in the state that only allows cold water to flow out;

Fig. 7 C is the rear view of valve body spare, and mixing valve then is in the state that only allows hot water to flow out;

Fig. 8 A is the planimetric map of a sensor insert and video breaker, in the time of valve closing;

Fig. 8 B is the planimetric map of the video breaker of this sensor insert, in the time of valve opening;

Fig. 9 constitutes in the valve member of the present invention a cam has been shown, the view of the structural relation between operative pin and the cam adapter lug boss;

Figure 10 A and B are the views according to the modification of valve actuator of the present invention;

Figure 11 is that the pie graph of control wiring is used to finish the every function according to automatic faucet of the present invention.

Numbering among the figure is represented following component: 1 expression valve member, the 2nd, control circuit board, the 3rd, housing, the 4th, flexible pipe, the 5th, waste pipe, the 6th, sensor, the 7th, faucet, the 8th, the head that discharges water, the 10th, valve body; The 11st, valve body spare, the 12nd, bonnet, the 13rd, cooling water inlet, the 14th, hot water inlet, the 15th, valve unit chamber, the 16th, valve actuator chamber, the 17th, shell of aneroid battery chamber, the 18th, camshaft through hole, the 19th, mixing valve chamber, the 20th, cold water channel, the 21st, hot water channel, the 22nd, connecting port, the 23rd, outlet, the 24th, cover plate, the 30th, mixing valve, the 31st, curve bath, the 32nd, seal groove, the 33rd, through hole, the 35th, mixing valve operating device, the 36th, operating stem, the 37th, temperature control handle, the 40th, the opening/shutting valve unit, the 41st, sleeve pipe, 41a are inlet holes, 41b is an aperture, and 41c is outlet, and 41d is a camshaft hole, the 42nd, piston, 42a are the front piston parts, and 42b is the rear piston part, 42c is an opening, and 42d is an opening, the 43rd, and reduction valve, the 44th, volute spring, the 45th, hole plug is prevented shotpin, the 46th, operative pin, the 47th, spiral spring, the 48th, lining, 48a are outlets, and 48b is a camshaft hole, the 49th, piston seat, the 50th, seal ring, the 60th, valve actuator, the 61st, camshaft, 61a is a cam, the 62nd, motor, the 63rd, gear transmission chain, 63a are cam wheels, the 64th, the sensor insert, 64a is a chopper, and 64b is an opening, the 65th, and sensor, the 66th, the video breaker, the 67th, stopper, the 80th, unrestricted continuous water supply mechanism, the 81st, continuous water supply switch button, 81a is a promotion face, 81b is the cam adapter lug boss, the 82nd, and lever, the 83rd, auto state switch button, the 84th, P cock, the 85th, the blade-shaped spring, the 90th, logical, the broken string road, the 92nd, logical, disconnect and closing.

The present invention will be described in detail in conjunction with the accompanying drawings and with several embodiments.

The cold water that automatic faucet of the present invention will be come in mixes the temperature that supplies water to regulate with the hot water of coming in addition.As shown in the side view Fig. 1 that cuts open in part, this automatic faucet comprises that a valve member 1 is used for opening and closing current, open and close current and be the identification of reverberation (user) to be responded and carry out by sensor, perhaps allow continuous effluent selectively and no matter how to the identification of reverberation, comprise that also a control circuit board 2 is contained in the outside of valve member 1, a housing 3 is used to contain valve member 1 and circuit board 2, flexible pipe 4 is used for current from valve member 1 through herein, a waste pipe 5 is used for containing flexible pipe 4,8 tops that are contained in pipe 5 that discharge water, and a sensor 6 and a faucet 7.

As illustrated in fig. 1 and 2, it is continuous water supply or switching water supply automatically with decision that this automatic faucet has a switching switch 92 to be used for the water supply operator scheme is made electric conversion in its front-end configuration, a continuous water supply button 81 and an automatic operating button 83 are used for mechanically changing the water supply operator scheme, and a Water Temperature-Adjusting rotary knob 37.

The structure of valve member 1 of the present invention is shown in Fig. 3 A and B and Fig. 4 A and the B, valve member 1 comprises a valve body 10, a mixing valve 30, a mixing valve operating device 35, a valve unit 40 is used for coming the switching current according to the pressure difference of water, valve actuator 60 is used for 40, one the continuous water supply mechanisms 80 in operated valve unit and is used for mechanically changing the water supply operator scheme with decision continuous water supply operator scheme or automatic operation mode.

As Fig. 5 A, B, shown in the C, valve body 10 comprises a valve body spare 11 and a bonnet 12, a cooling water inlet 13 and a hot water inlet 14 are arranged on this bonnet, and this valve part 11 has a valve unit chamber 15 valve unit 40 that is used for packing into, also has a valve actuator chamber 16 valve actuator 60 that is used for packing into, a shell of aneroid battery chamber 17 is used for the dryelement cell of packing into, and a camshaft through hole 18 is between valve unit chamber 15 and the valve actuator chamber 16.Moreover, a mixing valve chamber is arranged at the top of valve unit chamber 15, a cold water channel 20 is connected with cooling water inlet 13 and mixing valve chamber 19, a hot water channel 21 is connected with hot water inlet 14 and mixing valve chamber 19, a communication channel 22 is between valve unit chamber 15 and the mixing valve chamber 19, and an outlet 23 is in the underside of forward of valve unit chamber 15.

Valve unit chamber 15 is made its anterior diameter greater than its rear portion diameter, and its front portion is coated with cover plate 24.

As shown in Figure 6, the mixing valve 30 that is used for regulating water temperature is contained in the chamber 19 of valve body 10 and a curve bath 31 is arranged therebetween, and closure gasket groove 32 is arranged at its two ends, and the heart has a polygonal through hole 33 to be used for inserting the married operation device with rotating valve 30 therein.

Fig. 7 A, B, C show the rear view of valve body spare 11, and bonnet 12 has been removed, and mixing valve 30 has been put into mixing valve chamber 19.Valve 30 can be in chamber 19 left or turn right and movingly regulate water temperature when supplying water with the mixed proportion between the control hot and cold water.

Fig. 7 A has illustrated that cold water channel 20 and hot water channel 21 boths communicate with the curve bath 31 of mixing valve 30 so that the hot water or cold water enters simultaneously and flows through connecting port 22 again in the groove 31 of valve 30 and enter valve unit chamber 15.

Fig. 7 B has illustrated that cold water channel 20 is communicated with hot water channel 21 with groove 31 and then and between the groove 31 is blocked, so that has only cold water to enter groove 31 to enter valve unit chamber 15 by openning 22.

Fig. 7 C has illustrated that hot water channel 21 is communicated with cold water channel 20 with groove 31 and then and between the groove 31 is blocked, so that has only hot water to enter groove 31 to enter valve unit chamber 15 by openning 22.

As mentioned above, mixing valve 30 has been controlled mixed proportion between the hot and cold water to regulate water temperature to suitable degree.

Consult Fig. 4 A and B, mixing valve 30 utilizes mixing valve operation equipment 35 by manually operating, and this mixing valve operation equipment comprises an operating stem 36 and pack in the through hole 33 with its rear end, and temperature control handle 37 is contained in the front end of bar 36.

Consult Fig. 3 A and B and Fig. 4 A and B, an opening/shutting valve unit 40 is loaded in the valve unit chamber 15 of valve body 10.Valve unit 40 comprises: a sleeve pipe 41 integrally has a larger-diameter anterior cylinder barrel and the rear portion cylinder barrel than minor diameter, this rear portion cylinder barrel has a plurality of inlet hole 41a to be centered around on the cylinder barrel sidewall with well-regulated interval, and also have an aperture 41b to be configured in the center of its rear wall, anterior cylinder barrel in its front side then be open wide and a water outlet 41c and a camshaft hole 41d arranged on its casing wall; Piston 42 can be reciprocating within the cylinder barrel of the rear portion of sleeve pipe 41 and be had a rear piston part 42b to be configured to the opening 42d that a plurality of hole 42c and front piston part 42a are configured to a truncated cone shape; A reduction valve 43 is contained in the piston 42 and partly holds and enters in the opening 42d, and this reduction valve also has a volute spring 44 valve 43 is pressed to the place ahead; The anti-shotpin 45 of hole plug, the center the other end that an end of this pin is fixed on rear piston part 42b then passes hole 41b; An operative pin 46 is fixed on the reduction valve 43 with this valve unit of on-stream operation; Helical spring 47 is contained between the rear wall of rear piston part 42b and sleeve pipe 41 and with faint strength piston 42 is withstood forward; Lining 48 is contained in the anterior cylinder barrel of sleeve pipe 41 with the motion of limited piston 42 and an outlet 48a and the camshaft hole 48b corresponding to the camshaft hole 41d of sleeve pipe 41 corresponding to the outlet 41c of sleeve pipe 41 is provided; And piston seat 49 is contained in the rear end of lining 48.Adorned a seal ring 50 in the outside of the rear portion of sleeve pipe 41 cylinder barrel with the outside that seals up sleeve pipe 41 and the gap between the valve unit chamber 15.

A valve actuator 60 is described below is contained in and drives in the chamber 16 to drive a camshaft 61, this camshaft has a cam 61a to be used for driving operative pin 46.Consult Fig. 3 A and B, valve actuator 60 comprises: a camshaft 61 has a cam 61a, and is passed in the camshaft hole 18 between valve unit chamber 15 and the driving device chamber 16,41d, 48b on its top; A small motor 62; A power transmission tooth endless chain 63 is provided to be meshed with motor drive shaft 62 and camshaft 61; A sensor insert 64 is contained in the rear end of camshaft 61; The video breaker 66 of a U-shaped has a sensor 65, and this sensor 65 is formed and be passed in the periphery of the sensor insert between those walls by the light emitters 65a on the respective wall that is contained in breaker 66 and light receiver 65b.

Consult Fig. 8 A and B, sensor insert 64 is butterfly butterfly plates, has light blocking wing 64a, and each wing is a blade shape and opposite each other, also has the recess 64b that opens wide, and each recess is to cut 90 degree to form fan shape from a circle.

Consult Figure 10 A and B, a kind of modification of valve actuator 60, cancelled sensor insert 64 and video breaker 66 and in power transmission tooth endless chain 63, replaced a cam wheel 63a, this cam wheel 63a be cut from a round top 90 the degree sector part and form so that the rotation of camshaft 61 be restricted to 90 the degree; Comprise that also a stopper 67 is contained in the driving device chamber 16 and 90 degree that are positioned at cam wheel 63a cut part.Motor 62 operation the time be used for camshaft 61 alternately clockwise or counterclockwise direction rotate 90 degree.In this modification, motor 62 is just spent 90 of camshaft 61 and is just controlled use when rotating.

Consult Fig. 3 A and B, described a continuous water supply mechanism 80, mechanically be transformed into continuous water supply operation and no matter whether reverberation (user's) identification is arranged.Mechanism 80 is contained on the cover plate 24 that is covered with valve unit chamber 15, comprise: a continuous water supply button 81 with promotion face 81a is used for promoting the operative pin 46 of valve unit 40, and a cam adapter lug boss 81b is used for making cam 61a and operative pin 46 to remain on parastate, and this button passes plate 24 dresses and is used for thereon operating forward or backward; One end of a lever 82 is connected with button 81 and makes it do the motion of seesaw type on plate 24; Auto state switching button 83 then is contained on the other end of lever 82; A P cock 84 is contained on the valve body 10 and works with button 83 1; A blade-shaped spring 85 is contained on the plate 24 and unclamps to prevent button 81 from deviating under its state that promotes forward.Button 81 and 83 passes housing 3 and installs and be exposed to outside it.

Operation of the present invention is described below.Flow through cooling water inlet 13 and cold water channel 20 of cold water enters the curve bath 31 of mixing valve 30.Then flow through hot water inlet 14 and hot water channel 21 of hot water enters curve bath 31, and both are in this mutual mixing.Mixing valve 30 is rotated the temperature of regulating water supply with the mixed proportion that is controlled between the hot water or cold water in the groove 31 by the manual operation of the temperature control handle 37 on housing 3.The water that has mixed enters valve unit chamber 15 and is operated by valve unit 40 from groove 31 connecting port 22 of flowing through.

Fig. 4 A shows the closed condition of valve unit 40, and this moment, the operative pin 46 of unit 40 was placed in the position that parallels with the cam 61 of valve actuator, in order that make not contact between pin 46 and the cam 61a.

When cam 61a rotates 90 degree from closed condition, this cam 61a impels pin 46 and reduction valve 43 to produce the slit between one side canting is with the wall at the opening 42d of reduction valve 43 and piston 42.Water then sequential flow through the inlet hole 41b of sleeve pipe 41, the hole 42c of rear piston part 42b, and the slit that between the wall of valve 43 and opening 42d, produces, under the effect of bernoulli principle, caused at hydraulic pressure within the piston 42 and in the chamber between the rear wall of rear piston part 42b and sleeve pipe 41 and reduced.So piston 42 is promoted by differential water pressures and moves backward, because at the pressure at the back side of piston 42 pressure less than its outside.

The motion backward of piston 42 shown in Fig. 4 B, has caused big water gaging by the import 41a on the sidewall of sleeve pipe 41, the inside of lining 48, and outlet 48a, and 41c, 23, so that water can be finally 8 is discharged by discharging water.In other words, at this moment valve unit 40 is in opening state.In this stage, piston 42 remains on its position of moving backward, because in the hydraulic pressure of the front of piston 42 summation greater than the elastic force of the hydraulic pressure of the back of piston 42 and helical spring 47.

Turn off current, the cam 61a of valve actuator 60 turns over 90 degree from its enable possition so that operative pin 46 and reduction valve 43 turn back to its normal horizontal position owing to the restoring force of volute spring 44, shown in Fig. 4 A, just closed the slit between the wall of reduction valve 43 and opening 42d then.When the slit is closed and when will the current by import 41b and hole 42c cutting off, in piston 42 and the hydraulic pressure in the chamber between the rear wall of rear piston part 42b and sleeve pipe 41 become and be higher than pressure at the current of piston 42 fronts, thereby under the extra force of the elastic force of helical spring 47 helps, piston 42 is promoted forward.Piston 42 just moves forward like this closes the import 41a in the rear wall of sleeve pipe 41 to cut off current.Valve unit 40 now has been placed into closed condition.

In addition, the anti-shotpin 45 of hole plug is fixed on rear piston part 42b and goes up and pass inlet hole 41b so that this pin seesaws to make a return journey and removes the exogenous impurity that is blocked in the hole when piston 42 seesaws at any time when the action of valve unit 40 in the hole.

In addition, be used for can arranging the time that operative pin 42 seesaws long or short, this will be with the net sectional area of the rear portion cylinder barrel of inlet hole 41b and sleeve pipe 41 and decides.The present invention has adopted long operating time so that piston can not make the action that valve unit is undergone mutation.

Then, will describe the action of valve actuator 60, it will drive the camshaft 61 that has cam 61a on its top so that valve unit 40 is opened in operative pin 46 cantings.

In the time of in user's hand (reverberation) enters the identification range that is contained in the sensor 6 on 8 that discharges water, this sensor 6 sends a testing signal and is transported in the control wiring of control circuit board 2.This control wiring is processed the light emitters supply of current of back to motor 62 and the sensor on video breaker 66 65 with the testing signal of receiving.

So, motor 62 begins to move with the axle that rotates it so that sensor insert 64 and video breaker 66 change to the state shown in Fig. 8 B from the state shown in Fig. 8 A, light emitters 65a then sends infrared rays, and this infrared rays is interdicted by the light breaker 64a of sensor insert 64.Motor 62 remains in operation, and camshaft 61 and sensor insert 64 is turned over 90 degree so that the infrared rays of blocking is passed an opening 64b and enters into light receiver 65b.The infrared rays that is received by light receiver 65b is predicted by control wiring, and this just can cut off the power supply to motor 62, and apply simultaneously an instantaneous back current in the motor to check the rotation of motor drive shaft immediately.The result is, the rotation that has turned over the cam 61a that the camshafts 61 of 90 degree have stopped at its axle head is so that remain on the state of canting with operative pin 46, and this is in order to make valve unit remain on the enable possition.

When removing in the identification range of user's the sensor of hand (reverberation) from Water outlet 8, described control wiring is again to motor 62 and light emitters 65a power supply.

So camshaft 61 and sensor insert 64 have been rotated in the action of motor 62, and the opening 64b of the infrared rays that emits from transmitter 65a by insert 64 arrived receiver 65b.The power supply that disconnected motor 62 that camshaft turns over that 90 degree backs and sensor insert 64 have been cut off infrared rays by breaker 64a so that control wiring detects that infrared rays has been cut off, and simultaneously instantaneously applied a back current so that stop the rotation of motor drive shaft immediately.

Camshaft 61 stops on the positions of rotating 90 degree then will get back to its original position at the cam 61a on its top and the operative pin 46 of valve unit 40 is remained on horizontal position.The level of described pin 46 has been closed valve unit 40, as having described in the above.

The valve actuator that embodiment constituted 60 of the modification shown in Figure 10 A and B, motor 62 is just made 90 degree rotational action in the clockwise and counterclockwise direction of camshaft 61, this will correctly make it to stop operating on the point of 90 degree, and, needn't consider any misoperation or the rotator inertia of motor because a stopper 67 is contained in the 90 degree cut of the cam wheel 63a on the camshaft 61.Camshaft 61 clockwise or the counterclockwise direction rotations of making 90 degree make current passing through or cut off under the above embodiment's same state.

The operation of continuous water supply mechanism 80 is described below again.When automatic water-supply since sensor 6 when identification is opened or is cut off during a reverberation, if continuous water supply switching button 81 usefulness on the housing 3 are manually subdued, water just can be without interruption and regardless of the identification whether reverberation is arranged.

Consult Fig. 3 B, button 81 is depressed, the promotion face 81a on the button top has promoted the end of operative pin 46 so that pin and reduction valve 43 are mobile backward, and P cock 84 has been disconnected and make valve actuator 60 inoperative.When pin 46 in its vertical position and during canting by the action of cam 61a, just valve unit is when opening state, when in this case button 81 being depressed, be used to change cam over to horizontal position so that sell 46 parallel to each other promoting a cam adapter lug boss 81b on the face 81a with cam 61a.Fig. 9 has illustrated at cam 61a, and the relation between pin 46 and the lug boss 81b is owing to the effect of lug boss 81b is horizontal cam 61a.

When pin 46 and reduction valve 43 because the effect of the face of promotion 81a and when mobile backward, the opening 42d of piston 42 is opened to allow current to come out.Described current have caused moving backward of piston 42, address as institute in operating automatically.This automatic faucet is now in the operation of continuous water supply.

Automatic faucet to be transformed into automatic operation from continuous water supply, then will be contained in automatic operation switching button 83 on the housing 3 and push to and get final product.

As shown in Figure 3A, pushing to button 83 makes P cock 84 connect, promotion face 81a on button 81 top is outwards run out so that sell 46 and reduction valve 43 unclamps from its position that is brought to and because the elastic force effect of spring 44 and outwards jumping out rapidly, thereby closed the opening 42d of piston.After opening 42d closed, piston 42 moved forward with the throttle down unit, and as previously mentioned, soon faucet is placed at the automatic serviceability under the sensor effect.

As mentioned above, automatic faucet of the present invention provides and has been used for the mechanically operated function of continuous water supply.

To be described in the control wiring that forms on the circuit board 2 below.Being used for the circuit of control valve drive unit 60 can make some kinds of structures.Wherein a kind of can constitute as shown in Figure 11.

The feature of control circuit is, to reach continuous water supply on electric and the identification of 6 pairs of reverberations of tube sensor is not how, switching circuit 90 between a logic and the one shot multivibrator also will be provided, and this circuit 90 is connected to one on the switching switch 92 on the housing 3.

When switch 92 was connected, motor 62 begins to move, and the effect of tube sensor was not how to finish continuous water supply so that cam 61a produces operative pin 46 cantings and pin is remained on the canting position.When switch 92 disconnects, because the automatic operation that the identification of 6 pairs of reverberations of sensor has formed faucet is with water supply or cut off the water supply.

So automatic faucet of the present invention not only utilizes continuous water supply mechanism 80 mechanically to finish for the realization continuous water supply, and utilizes switching switch 90 and switch 92 in the control wiring electrically to finish.

Moreover the present invention can only electrically realize continuous water supply in sometime, as long as with the circuit simple change once.Here it is, uses a timer circuit 90' in the place of circuit 90 and a time set circuit 91 is connected to an one shot multivibrator only to come continuous water supply in the time of setting.In this operation, when switching switch 92 was connected, time set circuit 91 made to supply water and only just is achieved in the time of setting.

Moreover this control wiring provides a P cock 84, and this P cock 84 is changed its switching state by automatic operation switching button 83, and is connected to the motor driven circuit and gets on.So when switch 84 was connected, operation can be accomplished automatically, and when switch disconnected, the electric current of motor 62 was cut off, and then the automatic valve operation just can not realize.

On the other hand, be shown with the valve actuator 60 of a modification in an embodiment as Figure 10 A and B, this control wiring must adopt a bipolar driving device and one shot multivibrator in case motor just with camshaft 61 clockwise or counterclockwise direction rotate in times of 90 degree and could move.A kind of like this control wiring to be familiar with the industry anyone be known, therefore, to circuit be described in detail in this just abreviation fallen.

As mentioned above, automatic faucet of the present invention is because differential water pressures is come the operated valve unit, thereby do not need too many power, and its advantage is to adopt a little dryelement cell to replace industrial power or a big storage battery.Moreover the operation of valve unit 40 be slowly carry out so that unexpected action can not take place in current, do not have impact to component yet, its advantage is almost to have eliminated the wearing and tearing of component and it can be used for a long time.The present invention has further adopted continuous water supply machinery 80, and switching circuit 90 and switching switch 92 be with mechanism ground or electrically realize continuous water supply, so that uses when the present invention needs in any bucket or washtub supplies water very convenient.Further advantages are, the present invention can be according to season, weather and purposes need messenger's wage adjustment water saving temperature.

Claims (6)

1, a kind of automatic faucet and since sensor to the identification of reverberation response and automatically for, cut off the water supply, have a reduction valve (43), this reduction valve has a volute spring (44) and an operative pin (46), it is characterized in that,

This faucet comprises: be contained in the valve unit (40) in the valve unit chamber (15) in the valve body (10), this valve unit (40) comprising:

A sleeve (41) integrally has a larger-diameter anterior cylinder barrel and the rear portion cylinder barrel than minor diameter, and opens wide at its front end; This rear portion cylinder barrel has a plurality of inlet holes (41a) and is centered around on the sidewall of this cylinder barrel with well-regulated interval, also have an aperture (41b) at the center of this cylinder barrel rear wall, anterior cylinder barrel then has a water outlet (41c) and a camshaft hole (41d) is used for holding a camshaft (61);

A piston (42) can be reciprocating in the rear portion cylinder barrel of sleeve pipe (41), and have a rear piston part (42b) and be configured to a plurality of holes, also have a front piston part (42a) to be configured to a truncated cone shape opening (42d), these two piston pieces connect with bolt; A reduction valve (43) is contained in the piston (42) and partly is received and enters opening (42b), also has a said volute spring (44) on this reduction valve it is pressed to the front;

The anti-shotpin (45) of hole plug, the one end is fixed on the center of rear piston part (42d), and the other end then passes through hole (41b);

A said operative pin (46) is fixed on reduction valve (43) and upward operates to drive this valve unit;

A spiral spring (47) is contained between the rear wall of rear piston portion (42b) and sleeve pipe (41) and pushes piston (42) to front with faint strength;

A lining (48) is contained in the anterior cylinder barrel of sleeve pipe (41) with the travelling forward of limited piston (42), and it is corresponding with the camshaft hole (41d) of sleeve pipe (41) also to have disposed a camshaft hole (48b); And

A piston seat (49) is contained in the rear end of lining (48); And a valve actuator (60) is contained in the driving device chamber (16) of a valve body (10), and this valve actuator comprises:

A camshaft (61) has a cam (61a) on its top, and is installed between valve unit chamber (15) and the driving device chamber (16); A motor (62); A power transmission gear chain (63) is used for being meshed with the axle and the camshaft (61) of motor (62);

A sensor insert (64) is contained in the rear end of camshaft (61); Video breaker (66) with sensor (65) is installed round the periphery of sensor insert (64).

2, according to the faucet of claim 1, it is characterized in that, substitute as described sensor insert (64) and video breaker (66), the circumferential upper part of a cam wheel (63a) is cut the sector part that prescinds one 90 degree, and have a stopper (67) and be contained in 90 degree that are positioned at this cam wheel (63a) in the driving device chamber (16) and cut part, and motor (62) is arranged camshaft (61) is done clockwise or counterclockwise direction is alternately rotated.

According to the faucet of claim 1, it is characterized in that 3, this faucet also comprises: be used for mechanically operating continuously discharge water, a continuous water supply mechanism (80) comprising:

A continuous water supply button (81) has a promotion face (81a) and is used for promoting operative pin (46), also have a cam adapter lug boss (81b) and be used for cam (61a) is remained on the position that parallels with pin (46), this button (81) passes a plate (24) and installs the action of work front and back;

A lever (82) configuration is done the seesaw type motion and is connected with button (81) with the one end on plate (24);

Automatically operating switching button (83) for one is contained on the other end of lever (82);

A P cock (84) is contained in valve body (10) and goes up to work with button (83); And

A blade-shaped spring (85) is contained in plate (24) and goes up to prevent button (81) from deviating under promotion state forward and unclamp.

4, according to the faucet of claim 1, it is characterized in that, this faucet comprises the continuous water supply of an electric operation, between logic that a switching circuit (90) is contained in control wiring and the one shot multivibrator and a switching switch (92) be contained in housing (3) and go up and be connected with circuit (90).

5, according to the faucet of claim 4, it is characterized in that, this faucet comprises, sub as circuit (90), a timer circuit (90 ') and a time set circuit (91) are connected to an one shot multivibrator, when being communicated with, this faucet is continuous water supply in the time of setting just.

6, according to the faucet of claim 1, it is characterized in that, this faucet also comprises, with manually regulating water temperature, form above the valve unit chamber (15) of a mixing valve chamber (19) in valve body (10), and be connected with cooling water inlet (13) by a cold water channel (20), and be connected with hot water inlet (14) by a hot water channel (21), also be connected with valve unit chamber (15) by a connecting port (22); A mixing valve (30) has a curve bath (31) therebetween and enters in the chamber (15) and go to allow hot water or cold water's chamber (19) of flowing through, and this mixing valve (30) heart therein also has the through hole (33) in a polygonal cross section to be used for holding a mixing valve operator; And a mixing valve operator (35) comprises that an operating stem (36) puts in through hole (33) with its rear end and its front end is loaded onto a temperature control handle (37), and this knob (37) is positioned at the outside of housing (3) so that this mixing valve of manual operation (30).

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