CN102751134B - Water level switch - Google Patents
Water level switch Download PDFInfo
- Publication number
- CN102751134B CN102751134B CN201210205911.9A CN201210205911A CN102751134B CN 102751134 B CN102751134 B CN 102751134B CN 201210205911 A CN201210205911 A CN 201210205911A CN 102751134 B CN102751134 B CN 102751134B
- Authority
- CN
- China
- Prior art keywords
- reed
- base
- pressure cap
- contact
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Detail Structures Of Washing Machines And Dryers (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The invention discloses a water level switch, which comprises a seal cover and a base covered on the seal cover, wherein a sealed cavity is arranged between the seal cover and the base, and an air inlet is arranged outside the seal cover; a membrane is arranged in the cavity, and a pressure cavity is formed between the membrane and the inner wall of the seal cover; one end of the air inlet is communicated with a water tank of a washing machine, and the other end of the air inlet is communicated with the pressure cavity; a reed and an electrode plate which are positioned in the cavity are arranged on the base, and a contact is arranged on the reed; another contact is arranged on the electrode plate, and a mandril for pushing the reed to allow the contact on the reed to be closed is arranged on the membrane; and the reed is connected with an inserting piece extending out of the base, and a reset mechanism matched with the mandril to allow the contact on the reed to be opened and a gear shifting mechanism are also arranged on the base. The water level switch does not need to be directly contacted with the liquid level to be tested, and has the advantages of simple structure, low cost, high measuring precision, safe and reliable work, wide application range and no water source environment limitation.
Description
Technical field
The present invention relates to a kind of water level switch be applied on washing machine.
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.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of that directly do not contact with liquid level to be measured, certainty of measurement and the high water level switch of functional reliability,
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of water level switch, for detecting the water level signal of washing machine, comprise capping and cover the base in capping, there is airtight cavity between capping and base, capping outside is provided with suction nozzle, diaphragm is provided with in cavity, pressure chamber is formed between diaphragm and capping inwall, one end of suction nozzle is communicated with the water tank of washing machine, the other end is communicated with pressure chamber, base is provided with the reed and electrode slice that are positioned at cavity, reed has a contact, electrode slice has another contact with the contacts mates on reed, diaphragm is provided with the push rod that jack-up reed makes the contact closure on reed, reed is also connected with the inserted sheet stretching out in base exterior, base is also provided with resetting device and gear adjusting mechanism that the contact of making of matching with push rod on reed disconnect.
Described base is provided with place described resetting device and lead to the shrinkage pool of described cavity, this resetting device comprises and outer pressure cap, the spring base that is built in pressure cap in outer pressure cap, is built in the foundation in shrinkage pool and is located on foundation, water level spring is provided with between spring base and interior pressure cap, spring base and foundation are slidably matched, back-moving spring is provided with between spring base and foundation, described push rod inserts in foundation through described reed and matches with foundation, and outer pressure cap is also connected with described gear adjusting mechanism.
Described outer pressure cap is also provided with pressure cap screw, and this pressure cap screw screws in outer pressure cap and is against on described interior pressure cap.
Described gear adjusting mechanism comprises a cam with multiple gear and the camshaft driving this cam to rotate, this camshaft by stent support on described base, described outer pressure cap has the slide block matched with cam stretched out outside described shrinkage pool, slide block is also connected with a spring, and slide block is pushed against on each gear of cam by spring.
Described cam have six gears.
Described base is also provided with the guide pad led to described slide block.
The present invention adopts technique scheme, and compared with prior art, this water level switch 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.
Accompanying drawing explanation
Fig. 1 is the structural representation of water level switch of the present invention;
Mark in above-mentioned figure is: 1, capping; 2, base; 3, diaphragm; 4, push rod; 5, reed; 6, waist drum spring; 7, contact; 8, inserted sheet; 9, foundation; 10, back-moving spring; 11, water level spring; 12, spring base; 13, interior pressure cap; 14, outer pressure cap; 15, pressure cap screw; 16, cam; 17, camshaft; 18, spring is returned; 19, support; 20, electrode slice.
Embodiment
Be illustrated in figure 1 a kind of water level switch of the present invention, for detecting the water level signal of washing machine, it comprises capping 1 and covers the base 2 in capping 1, connected by screw fastening between base 2 and capping 1, between capping 1 and base 2, there is airtight cavity, in capping 1, outside is provided with suction nozzle, diaphragm 3 is provided with in cavity, pressure chamber is formed between diaphragm 3 and capping 1 inwall, one end of suction nozzle is communicated with the water tank of washing machine, the other end is communicated with pressure chamber, base 2 is provided with the reed 5 and electrode slice 20 that are positioned at cavity, reed 5 has a contact 7, electrode slice 20 has another contact 7 coordinated with the contact 7 on reed 5, diaphragm 3 is provided with jack-up reed 5 and makes the push rod 4 that the contact 7 on reed 5 is closed, reed 5 has waist drum spring 6, push rod 4 jack-up reed 5, reed 5 is out of shape the action of drive waist drum spring 6 makes two contacts 7 close, reed 5 is also connected with the inserted sheet 8 stretching out in base 2 outside, signal passes to the control system of washing machine by inserted sheet 8 and electrode slice 20.Electrode slice 20 is one of important electrode that switch is formed, and the contact 7 on switch disconnections i.e. electrode slice 20 and reed 5 disconnects, contact 7 conducting on switch conduction and electrode slice 20 and reed 5.Base 2 is also provided with the resetting device that the contact 7 on reed 5 is disconnected and gear adjusting mechanism that match with push rod 4.
As shown in Figure 1, base 2 is provided with place resetting device and lead to the shrinkage pool of cavity, this resetting device comprises and outer pressure cap 14, the spring base 12 that is built in pressure cap 13 in outer pressure cap 14, is built in the foundation 9 in shrinkage pool and is located on foundation 9, water level spring 11 is provided with between spring base 12 and interior pressure cap 13, spring base 12 and foundation 9 are slidably matched, back-moving spring 10 is provided with between spring base 12 and foundation 9, push rod 4 inserts in foundation 9 through reed 5 and matches with foundation 9, and outer pressure cap 14 is also connected with gear adjusting mechanism.
Outside pressure cap 14 is also provided with pressure cap screw 15 as shown in Figure 1, this pressure cap screw 15 screws in outer pressure cap 14 and is against on interior pressure cap 13.Pressure cap screw 15 in interior pressure cap 13 water level spring 11 carry out pretension adjustment, so that switch can issue lively work in the effect of water level spring 11 when corresponding water level.
As shown in Figure 1, gear adjusting mechanism comprises a cam 16 with multiple gear and the camshaft 17 driving this cam 16 to rotate, this camshaft 17 is supported on base 2 by support 19, outside pressure cap 14 has the slide block matched with cam 16 stretched out outside shrinkage pool, slide block also connects spring 18 once, return spring 18 slide block to be pushed against on each gear of cam 16, base 2 is also provided with the guide pad led to slide block, this pilot hole is provided with guide groove.
The cam 16 of this water level switch have six gears regulated.
Compared with prior art, this water level switch 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 (1)
1. a water level 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 suction nozzle, diaphragm is provided with in cavity, pressure chamber is formed between diaphragm and capping inwall, one end of suction nozzle is communicated with the water tank of washing machine, the other end is communicated with pressure chamber, base is provided with the reed and electrode slice that are positioned at cavity, reed has a contact, electrode slice has another contact with the contacts mates on reed, diaphragm is provided with the push rod that jack-up reed makes the contact closure on reed, reed is also connected with the inserted sheet stretching out in base exterior, when contact on electrode slice and the contact on reed disconnect, switch is off state, when the contact on electrode slice and the contact on reed, switch is conducting state, base is also provided with resetting device and gear adjusting mechanism that the contact of making of matching with push rod on reed disconnect,
Described base is provided with place described resetting device and lead to the shrinkage pool of described cavity, this resetting device comprises and outer pressure cap, the spring base that is built in pressure cap in outer pressure cap, is built in the foundation in shrinkage pool and is located on foundation, water level spring is provided with between spring base and interior pressure cap, spring base and foundation are slidably matched, back-moving spring is provided with between spring base and foundation, described push rod inserts in foundation through described reed and matches with foundation, and outer pressure cap is also connected with described gear adjusting mechanism;
Described outer pressure cap is also provided with pressure cap screw, and this pressure cap screw screws in and is against on described interior pressure cap in outer pressure cap; Described gear adjusting mechanism comprises a cam with multiple gear and the camshaft driving this cam to rotate, this camshaft by stent support on described base, described outer pressure cap has the slide block matched with cam stretched out outside described shrinkage pool, slide block also connects spring once, returns spring and slide block is pushed against on each gear of cam; Described base is also provided with the guide pad led to described slide block; Described cam have six gears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210205911.9A CN102751134B (en) | 2012-06-21 | 2012-06-21 | Water level switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210205911.9A CN102751134B (en) | 2012-06-21 | 2012-06-21 | Water level switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102751134A CN102751134A (en) | 2012-10-24 |
| CN102751134B true CN102751134B (en) | 2015-06-10 |
Family
ID=47031224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210205911.9A Active CN102751134B (en) | 2012-06-21 | 2012-06-21 | Water level switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102751134B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113045023B (en) * | 2021-04-26 | 2022-07-15 | 宁波利佳青石电气科技有限公司 | High-low voltage switch of water purifier |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4192980A (en) * | 1978-10-02 | 1980-03-11 | The Singer Company | Automatic re-set pressure switch |
| US5187338A (en) * | 1991-10-04 | 1993-02-16 | Robertshaw Controls Company | Fluid pressure operated switch and contact assembly |
| CN2550396Y (en) * | 2002-07-16 | 2003-05-14 | 浙江神龙电器有限公司 | Gear shifting repositioning pressure water level switch of washing machine |
| 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 |
| CN202671897U (en) * | 2012-06-21 | 2013-01-16 | 芜湖乐佳电器有限公司 | Water level switch |
-
2012
- 2012-06-21 CN CN201210205911.9A patent/CN102751134B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4192980A (en) * | 1978-10-02 | 1980-03-11 | The Singer Company | Automatic re-set pressure switch |
| US5187338A (en) * | 1991-10-04 | 1993-02-16 | Robertshaw Controls Company | Fluid pressure operated switch and contact assembly |
| CN2550396Y (en) * | 2002-07-16 | 2003-05-14 | 浙江神龙电器有限公司 | Gear shifting repositioning pressure water level switch of washing machine |
| 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 |
| CN202671897U (en) * | 2012-06-21 | 2013-01-16 | 芜湖乐佳电器有限公司 | Water level switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102751134A (en) | 2012-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204300460U (en) | A kind of ball valve sealing end cap | |
| CN106906619B (en) | Drainage control mechanism and washing machine | |
| CN102008227B (en) | Pressure sensor for heating container | |
| CN105043675A (en) | Ball valve gas tightness test apparatus | |
| CN102751134B (en) | Water level switch | |
| CN105203273A (en) | Ball valve testing device | |
| CN104089083A (en) | Intelligent control valve | |
| CN203249658U (en) | Piston type gas flowmeter | |
| CN202671897U (en) | Water level switch | |
| CN109974643A (en) | Position stroke-measuring method and device suitable for GIS disconnecting switch divide-shut brake | |
| CN105115715A (en) | Ball valve testing machine | |
| CN105136408A (en) | Valve internal air tightness detection device | |
| CN208505518U (en) | A kind of Fluid pressure detection sensor | |
| CN204228344U (en) | A kind of end cover mechanism of ball valve air tightness test machine | |
| CN204004725U (en) | A kind of vacuum valve for sewage conduct | |
| CN202119635U (en) | High voltage breaker mechanical characteristic testing device | |
| CN203629571U (en) | Underwater portable contact pin type bottom-supported profiler | |
| CN106092154B (en) | A kind of deep water rotary connector | |
| CN204864202U (en) | Energy disappearance locking device | |
| CN203688453U (en) | Four-way pipe welding seam gap detecting device | |
| CN102737908B (en) | Water level switch of washing machine | |
| CN210516614U (en) | Novel high-voltage switch | |
| CN105136409A (en) | Sealing testing machine | |
| AU2003270105A1 (en) | Leakage indicator for a filter element of a filter press | |
| RU2012123000A (en) | METHOD FOR MEASURING INTERNAL PRESSURE |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |