CN102737908B - Water level switch of washing machine - Google Patents
Water level switch of washing machine Download PDFInfo
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- CN102737908B CN102737908B CN201210205913.8A CN201210205913A CN102737908B CN 102737908 B CN102737908 B CN 102737908B CN 201210205913 A CN201210205913 A CN 201210205913A CN 102737908 B CN102737908 B CN 102737908B
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Abstract
The invention discloses a water level switch of a washing machine, which is used for detecting a water level signal of the washing machine and comprises a seal cover, a base covered on the seal cover, a cavity, an air inlet pipe and a diaphragm; a pressure cavity is formed between the diaphragm and the inner wall of the seal cover; a reed, a bottom piece, a middle piece and an upper piece are arranged in the base; a reed terminal, a bottom piece terminal, a middle piece terminal and an upper piece terminal are arranged outside the base; a reed insert is connected onto the reed; the reed insert is matched with the bottom piece; a mandril is arranged on the diaphragm; and under the action of the mandril, the reed is contacted with the upper piece or the middle piece to transmit a signal, and the reed insert is contacted with the bottom piece to transmit the signal. Compared with the prior art, the water level switch is provided with four output terminals, so that four signals which are connected with and disconnected from one another can be output, a complicated circuit system can be supported, and the stability is good; and the water level switch does not need to be directly contacted with a liquid level to be detected, the structure is simple, the cost is low, the measuring precision is high, the working is safe and reliable, the scope of application is wide, and a water source environment does not restrict in any way.
Description
Technical field
The present invention relates to a kind of washing machine water bit switch.
Background technology
The water level switch structure be applied at present on washing machine is more complicated, and needs directly to contact with liquid level to be measured, and be easily subject to restriction and the scaling of water source environment, the certainty of measurement of water level switch is low, and functional reliability is low, and can not support complicated Circuits System.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of washing machine water bit switch supporting complicated Circuits System.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of washing machine water bit switch, for detecting the water level signal of washing machine, it comprises capping and covers the base in capping, there is airtight cavity between capping and base, capping outside is provided with air inlet pipe, diaphragm is provided with in cavity, pressure chamber is formed between diaphragm and capping inwall, one end of air inlet pipe is communicated with the water tank of washing machine, the other end is communicated with pressure chamber, base is provided with the reed being positioned at cavity, egative film, middle and upper slice, correspondingly be provided with the reed terminal be connected with reed for outputing signal in base exterior, the egative film terminal be connected with egative film, sheet terminal and upper slice terminal of being connected with upper slice in being connected with middle, reed is connected with reed dummy slider, this reed dummy slider matches with egative film, diaphragm is provided with the push rod of jack-up reed and reed dummy slider, reed also matches with middle with upper slice, under the effect of push rod, reed with upper slice or middle sheet to contact Continuity signal, reed dummy slider contacts with egative film Continuity signal.
Described reed has a waist drum spring and a contact, under the effect of described push rod, reed buckling deformation under the effect of waist drum spring, the contact on reed respectively with upper slice or middle sheet contact or be separated.
In an initial condition, contact on described reed contacts with described middle, now export no water signal, when there is pressure in described pressure chamber, described push rod starts reed described in jack-up and reed dummy slider under pressure, reed buckling deformation under the effect of described waist drum spring, contact on reed is separated with middle, contact on reed become with described upper slice contact conducting, now export high water level signal, when pressure in pressure cavity increases, reed dummy slider by push rod jack-up until contact conducting with described egative film, now export spill over, upper slice namely by reed and egative film conducting, when pressure in pressure cavity diminishes, reed dummy slider is separated with egative film, reed recovers flat position under the effect of waist drum spring, namely the contact on reed is separated with upper slice, now export reset signal, reed contacts conducting with middle again afterwards.
Described base is provided with the reed screw be connected with whorl of base, at chassis interior, between reed screw and described reed dummy slider, is provided with reed spring.
At the bossed boss of side tool of described reed dummy slider, the corresponding opposite side at reed dummy slider has groove, and described reed spring housing is on this boss, and described push rod withstands in the groove on reed dummy slider.
Described base is provided with the dummy slider screw be connected with whorl of base, at chassis interior, be provided with dummy slider spring and interior pressure cap, this dummy slider spring one end is enclosed within dummy slider screw, the other end is enclosed within this interior pressure cap, and interior pressure cap is against the position near the contact point contacted with described egative film on described reed dummy slider under the effect of dummy slider spring.
Described base is provided with the upper slice screw be connected with whorl of base, and at chassis interior, be provided with flat spring, on this, flat spring one end is connected on a screw, the other end be connected to described upper slice on.
Described base and described capping are that clamping is connected.
Described air inlet pipe is straight pipeline.
The present invention adopts technique scheme, and compared with prior art, this water level switch has four lead-out terminals, the exportable four kinds of signals containing break-make each other, can support complicated Circuits System, good stability, and this water level switch does not need directly to contact with liquid level to be measured, structure is simple, with low cost, certainty of measurement is high, safe and reliable, applied widely, not by the restriction of water source environment.
Accompanying drawing explanation
Fig. 1 is the structural representation of water level switch of the present invention;
Fig. 2 is the A-A cutaway view in Fig. 1;
Fig. 3 is the B-B cutaway view in Fig. 1;
Mark in above-mentioned figure is: 1, egative film terminal; 2, reed terminal; 3, upper slice terminal; 4, middle terminal; 5, reed screw; 6, dummy slider screw; 7, upper slice screw; 8, capping; 9, diaphragm; 10, push rod; 11, base; 12, reed; 13, air inlet pipe; 14, reed spring; 15, waist drum spring; 16, reed dummy slider; 17, interior pressure cap; 18, dummy slider spring; 19, upper slice; 20, contact; 21, middle; 22, egative film.
Embodiment
As Fig. 1, Fig. 2 and Figure 3 shows that a kind of washing machine water bit switch of the present invention, for detecting the water level signal of washing machine, it comprises capping 8 and covers the base 11 in capping 8, between capping 8 and base 11, there is airtight cavity, capping 8 outside is provided with air inlet pipe 13, air inlet pipe 13 is straight pipeline, diaphragm 9 is provided with in cavity, pressure chamber is formed between diaphragm 9 and capping 8 inwall, one end of air inlet pipe 13 is communicated with the water tank of washing machine, the other end is communicated with pressure chamber, be provided with the reed 12 being positioned at cavity on the pedestal 11, egative film 22, middle 21 and upper slice 19, the corresponding reed terminal 2 be connected with reed 12 be provided with in base 11 outside for outputing signal, the egative film terminal 1 be connected with egative film 22, in being connected with middle 21 sheet terminal 4 and with upper slice 19 upper slice terminals 3 be connected, reed 12 is connected with reed dummy slider 16, this reed dummy slider 16 matches with egative film 22, diaphragm 9 is provided with the push rod 10 of jack-up reed 12 and reed dummy slider 16, reed 12 and with upper slice 19 and middle 21 match, under the effect of push rod 10, reed 12 with upper slice 19 or middle sheet 21 to contact Continuity signal, reed dummy slider 16 contacts with egative film 22 Continuity signal.Compared with prior art, this water level switch has four lead-out terminals, different connections is carried out at switch internal by four terminals, the exportable four kinds of signals containing break-make each other, these four kinds of signals are no water signal, high water level signal, reset signal and spill over, therefore this water level switch can support complicated Circuits System, good stability.
As shown in Figure 2, reed 12 has a waist drum spring and a contact, under the effect of push rod 10, push rod 10 jack-up reed 12, reed 12 buckling deformation under the effect of waist drum spring 15, the contact 20 on reed 12 respectively with upper slice 19 or middle sheet 21 contact or be separated.Upper slice 19 and middle 21 both sides being up and down positioned at reed 12.In an initial condition, the contact 20 on reed 12 contacts with middle 21, now exports no water signal.When having pressure in pressure chamber, push rod 10 starts jack-up reed 12 and reed dummy slider 16 under pressure, reed 12 buckling deformation under the effect of waist drum spring 15, contact 20 on reed 12 is separated with middle 21, contact 20 on reed 12 becomes and 19 contacts conducting with upper slice, now exports high water level signal.When pressure in pressure cavity increases, reed dummy slider 16 until contact conducting with egative film 22, is now exported spill over by push rod 10 jack-up, upper slice 19 namely by reed 12 and egative film 22 conducting.When pressure in pressure cavity diminishes, reed dummy slider 16 is separated with egative film 22 under the effect of reed spring 14, reed 12 recovers flat position under the effect of waist drum spring 15, namely the contact 20 on reed 12 19 to be separated with upper slice, now export reset signal, reed 12 contacts conducting with middle 21 again afterwards.
As depicted in figs. 1 and 2, be provided with the reed screw 5 be threaded with base 11 on the pedestal 11, inner at base 11, between reed screw 5 and reed dummy slider 16, be provided with reed spring 14.At the bossed boss of side tool of reed dummy slider 16, the corresponding opposite side at reed dummy slider 16 has groove, and reed spring 14 is enclosed within this boss, and push rod 10 withstands in the groove on reed dummy slider 16.Reed screw 5, by the difference of screw-in depth, carries out pretension adjustment to the reed spring 14 in base 11, the water level characteristic of by-pass cock, so that switch can issue lively work in the effect of reed spring 14 when corresponding water level.
As depicted in figs. 1 and 2, be provided with the dummy slider screw 6 be threaded with base 11 on the pedestal 11, inner at base 11, be provided with dummy slider spring 18 and interior pressure cap 17, this dummy slider spring 18 one end is enclosed within dummy slider screw 6, the other end is enclosed within this interior pressure cap 17, and interior pressure cap 17 has top, and the top on interior pressure cap 17 is against the position near the contact point 20 contacted with egative film 22 on reed dummy slider 16 under the effect of dummy slider spring 18.Dummy slider screw 6 by the difference of screw-in depth, carries out pretension adjustment to the dummy slider spring 18 in base 11, the water level characteristic of by-pass cock, so that switch can issue lively work in the effect of dummy slider spring 18 when corresponding water level equally.
As shown in the Fig. 2 of figure Qinghe, be provided with the upper slice screw 7 be threaded with base 11 on the pedestal 11, inner at base 11, be provided with flat spring, on this, flat spring one end is connected on a screw 7, and the other end is connected on slices 19.Upper slice screw 7 by the difference of screw-in depth, carries out pretension adjustment to the upper flat spring in base 11, the water level characteristic of by-pass cock, so that switch can issue lively work in the effect of upper flat spring when corresponding water level equally.
As shown in Figure 2, base 11 for clamping is connected, adopts the connected mode of clamping with capping 8, and when assembling capping 8 and base 11, process operation is simple, and spended time is few, improves working (machining) efficiency, also reduces the manufacturing cost of water level switch.
This water level switch compared with prior art, does not need directly to contact with liquid level to be measured, and structure is simple, and with low cost, certainty of measurement is high, safe and reliable, applied widely, not by the restriction of water source environment.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (4)
1. a washing machine water bit switch, for detecting the water level signal of washing machine, it is characterized in that: comprise capping and cover the base in capping, there is airtight cavity between capping and base, capping outside is provided with air inlet pipe, diaphragm is provided with in cavity, pressure chamber is formed between diaphragm and capping inwall, one end of air inlet pipe is communicated with the water tank of washing machine, the other end is communicated with pressure chamber, base is provided with the reed being positioned at cavity, egative film, middle and upper slice, correspondingly be provided with the reed terminal be connected with reed for outputing signal in base exterior, the egative film terminal be connected with egative film, sheet terminal and upper slice terminal of being connected with upper slice in being connected with middle, reed is connected with reed dummy slider, this reed dummy slider matches with egative film, diaphragm is provided with the push rod of jack-up reed and reed dummy slider, reed also matches with middle with upper slice, under the effect of push rod, reed with upper slice or middle sheet to contact Continuity signal, reed dummy slider contacts with egative film Continuity signal,
Described reed has a waist drum spring and a contact, under the effect of described push rod, reed buckling deformation under the effect of waist drum spring, the contact on reed respectively with upper slice or middle sheet contact or be separated;
In an initial condition, contact on described reed contacts with described middle, now export no water signal, when there is pressure in described pressure chamber, described push rod starts reed described in jack-up and reed dummy slider under pressure, reed buckling deformation under the effect of described waist drum spring, contact on reed is separated with middle, contact on reed become with described upper slice contact conducting, now export high water level signal, when pressure in pressure cavity increases, reed dummy slider by push rod jack-up until contact conducting with described egative film, now export spill over, upper slice namely by reed and egative film conducting, when pressure in pressure cavity diminishes, reed dummy slider is separated with egative film, reed recovers flat position under the effect of waist drum spring, namely the contact on reed is separated with upper slice, now export reset signal, reed contacts conducting with middle again afterwards,
Described base is provided with the reed screw be connected with whorl of base, at chassis interior, between reed screw and described reed dummy slider, is provided with reed spring;
At the bossed boss of side tool of described reed dummy slider, the corresponding opposite side at reed dummy slider has groove, and described reed spring housing is on this boss, and described push rod withstands in the groove on reed dummy slider;
Described base is provided with the dummy slider screw be connected with whorl of base, at chassis interior, be provided with dummy slider spring and interior pressure cap, this dummy slider spring one end is enclosed within dummy slider screw, the other end is enclosed within this interior pressure cap, and interior pressure cap is against the position near the contact point contacted with described egative film on described reed dummy slider under the effect of dummy slider spring; Dummy slider screw, by the difference of screw-in depth, carries out pretension adjustment to the dummy slider spring in base, the water level characteristic of by-pass cock, so that switch can issue lively work in the effect of dummy slider spring when corresponding water level.
2. washing machine water bit switch according to claim 1, it is characterized in that: on described base, be provided with the upper slice screw be connected with whorl of base, at chassis interior, be provided with flat spring, on this, flat spring one end is connected on a screw, the other end be connected to described upper slice on.
3. washing machine water bit switch according to claim 2, is characterized in that: described base and described capping are that clamping is connected.
4. washing machine water bit switch according to claim 3, is characterized in that: described air inlet pipe is straight pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210205913.8A CN102737908B (en) | 2012-06-21 | 2012-06-21 | Water level switch of washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210205913.8A CN102737908B (en) | 2012-06-21 | 2012-06-21 | Water level switch of washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102737908A CN102737908A (en) | 2012-10-17 |
| CN102737908B true CN102737908B (en) | 2015-06-10 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210205913.8A Active CN102737908B (en) | 2012-06-21 | 2012-06-21 | Water level switch of washing machine |
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| Country | Link |
|---|---|
| CN (1) | CN102737908B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5187338A (en) * | 1991-10-04 | 1993-02-16 | Robertshaw Controls Company | Fluid pressure operated switch and contact assembly |
| CN2419233Y (en) * | 2000-03-09 | 2001-02-14 | 乐清市伟滨电子实业公司 | Pressure switch for household drum washing machine |
| CN201032617Y (en) * | 2007-02-28 | 2008-03-05 | 浙江力夫机电制造有限公司 | Water level control switch |
| CN201522963U (en) * | 2009-09-28 | 2010-07-07 | 青岛毕勤机电有限公司 | Two-way pressure switch |
| CN201725730U (en) * | 2010-05-28 | 2011-01-26 | 南通市华冠电器有限公司 | Water level pressure switch of washing machine |
| CN202678211U (en) * | 2012-06-21 | 2013-01-16 | 芜湖乐佳电器有限公司 | Water level switch of washing machine |
-
2012
- 2012-06-21 CN CN201210205913.8A patent/CN102737908B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5187338A (en) * | 1991-10-04 | 1993-02-16 | Robertshaw Controls Company | Fluid pressure operated switch and contact assembly |
| CN2419233Y (en) * | 2000-03-09 | 2001-02-14 | 乐清市伟滨电子实业公司 | Pressure switch for household drum washing machine |
| CN201032617Y (en) * | 2007-02-28 | 2008-03-05 | 浙江力夫机电制造有限公司 | Water level control switch |
| CN201522963U (en) * | 2009-09-28 | 2010-07-07 | 青岛毕勤机电有限公司 | Two-way pressure switch |
| CN201725730U (en) * | 2010-05-28 | 2011-01-26 | 南通市华冠电器有限公司 | Water level pressure switch of washing machine |
| CN202678211U (en) * | 2012-06-21 | 2013-01-16 | 芜湖乐佳电器有限公司 | Water level switch of washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102737908A (en) | 2012-10-17 |
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