CN209326739U - A kind of water level sensor - Google Patents
A kind of water level sensor Download PDFInfo
- Publication number
- CN209326739U CN209326739U CN201920250837.XU CN201920250837U CN209326739U CN 209326739 U CN209326739 U CN 209326739U CN 201920250837 U CN201920250837 U CN 201920250837U CN 209326739 U CN209326739 U CN 209326739U
- Authority
- CN
- China
- Prior art keywords
- silica membrane
- gel silica
- upper housing
- water level
- lower case
- 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
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to sensor technical fields, especially a kind of water level sensor, including the lower case to link together, upper housing, the lower case side is equipped with inlet channel, the lower case, detection part is equipped in the sealed chamber formed between upper housing, the detection part includes gel silica membrane, sealed chamber is divided into upper chamber by gel silica membrane, lower chambers, the magnetic core is connect by ejection assembly with snap component, ejection assembly includes integrally formed chassis, hollow push rod, magnetic core is set in outside hollow push rod, the inductance coil is connect with the connecting terminal that upper housing side is arranged in.Assembly technology difficulty substantially reduces, guarantee that magnetic core can stablize up and down motion simultaneously, greatly improve sensor assembly efficiency and measurement accuracy, gel silica membrane bottom inflow is reasonable in design simultaneously, guarantee that gel silica membrane bottom is more uniformly stressed, orientation at the uniform velocity moves, and not only extends sensor service life, but also improve height of water level detection accuracy.
Description
Technical field
The utility model relates to sensor technical field more particularly to a kind of water level sensors.
Background technique
Water level sensor of washing machine simple structure, convenient control is widely used in low and middle-end, middle-end, in high-end washing machines.
Water level sensor of washing machine is supplied to one LC tank resonance frequency of computer board of washing machine, and computer board of washing machine is according to the vibration
Swing loop resonance frequency signal automatic control and adjustment water level of washing machine.The difference of assembly method will be direct in sensor production process
Sensor using effect is influenced, while influencing assembly efficiency.
Utility model content
Purpose of the utility model is to solve sensor assembly method in the prior art is unreasonable, assembly efficiency is influenced
And the problem of using effect, and a kind of water level sensor proposed.
To achieve the goals above, the utility model adopts the technical scheme that
Design a kind of water level sensor, including link together lower case, upper housing, the lower case side be equipped with into
Gas channel, the sealed chamber formed between the lower case, upper housing is interior to be equipped with detection part, and the detection part includes silica gel
Diaphragm, the gel silica membrane are fixed between lower case, upper housing, and the sealed chamber is divided into epicoele by gel silica membrane
Room, lower chambers, the lower chambers are connected to inlet channel, and the gel silica membrane top is equipped with magnetic core, among the gel silica membrane
Top is equipped with integrally formed snap component, and the snap component includes open circles shell of column, conic clamp, the conic clamp bottom
Outer diameter is held to be greater than open circles shell of column outer diameter, the magnetic core is connect by ejection assembly with snap component, and the ejection assembly includes
Integrally formed chassis, hollow push rod, the hollow push rod inner wall be it is ladder-like, the hollow push rod is arranged and is stuck in buckle group
On part, the magnetic core is set in outside hollow push rod, and the lower case bottom is connected with coil brace, is twined on the coil brace
It is wound with inductance coil, the inductance coil is connect with the connecting terminal that upper housing side is arranged in, the magnetic core and coil brace
Coaxial arrangement.
Preferably, using being interference fitted, the hollow push rod top is inserted with limit plug for the magnetic core and hollow push rod,
The upper housing screw top is connected with nut, is equipped with interior hex slot at the top of the nut, the nut bottom end be equipped with one at
The position-limiting drum of type is equipped with second spring between the nut and limit plug, and the second spring top is set on position-limiting drum,
The second spring bottom end is set on limit plug.
Preferably, the hollow push rod top is circumferential integrally formed with several Elastic buckles, the Elastic buckle top
To chamfer bulge-structure, the magnetic core is fastened between Elastic buckle and chassis, and the upper housing screw top is connected with nut,
Interior hex slot is equipped at the top of the nut, the nut bottom end is equipped with integrally formed position-limiting drum, the nut and Elastic buckle
Between be equipped with second spring, the second spring top is set on position-limiting drum, and the second spring bottom end is set in elastic card
It buckles.
Preferably, the shape in the gel silica membrane section is wavy, and the gel silica membrane passes through upper housing bottom margin
It is pressed on inside lower case, the face that the lower case upper surface is contacted with gel silica membrane is equipped with annular protrusion, and the convex annular
Playing cross section is semicircular structure.
Preferably, cylinder is equipped among the lower case, coaxial sleeve is equipped with the first spring, the pellosil on the cylinder
Piece baseplane is overlapped with the first spring top plane.
Preferably, the barrel top is equipped with several air discharge ducts.
Preferably, the connecting terminal includes wire connecting portion, plug division, and the wire connecting portion is connect with inductance coil, described to connect
Line portion is vertically arranged with plug division, and plug division tail portion top surface is equipped with bulge-structure, and the upper housing side is equipped with harness
Guide groove, the plug division of the connecting terminal are placed in harness guide groove.
Preferably, the connecting terminal is three, and the harness guide groove is divided into three notches by two partitions, three
A connecting terminal is respectively placed in three notches, and each pocket bottom offers a draining keyway.
Preferably, the coil brace is fixed on upper housing bottom by the way of three-point fix.
The utility model proposes a kind of water level sensor, beneficial effect is: gas enters silica gel by inlet channel
Under gas pressure, the upwardly-directed ejection of gel silica membrane is jacked up magnetic core by gel silica membrane, magnetic core upwards for diaphragm lower chambers
The electromagnetic wire of inductance coil is cut when mobile, so that the inductance of inductance coil be driven to change, washing machine internal water level is got over
Height, the height that magnetic core moves upwards is higher, on the contrary then lower, this kind of signal is then passed to the judgement of washing machine water level controller
Height of water level is linked together ejection assembly and the snap component on gel silica membrane by the way of clamping, passes through ejection group
Magnetic core and gel silica membrane are connected to become an entirety by part, and assembly technology difficulty substantially reduces, while guaranteeing that magnetic core can be stablized
Movement, greatly improves sensor assembly efficiency and measurement accuracy, while gel silica membrane bottom inflow is reasonable in design, guarantees silicon
Glue film bottom is more uniformly stressed, and not only extends sensor service life, but also improve detection accuracy.
Detailed description of the invention
Fig. 1 is the cutting structural schematic diagram of the utility model；
Fig. 2 is the surface structure schematic diagram of the utility model；
Fig. 3 is the inside schematic perspective view of the utility model；
Fig. 4 is the lower case structural schematic diagram of the utility model；
Fig. 5 is the elastic-buckle structure schematic diagram of the utility model.
In figure: air discharge duct 1, conic clamp 2, open circles shell of column 3, cylinder 4, the first spring 5, lower case 6, gel silica membrane 7,
Chassis 8, hollow push rod 9, magnetic core 10, limit plug 11, second spring 12, position-limiting drum 13, nut 14, interior hex slot 15, upper casing
Body 16, inlet channel 17, coil brace 18, harness guide groove 19, connecting terminal 20, draining keyway 21, annular protrusion 22, elasticity
Buckle 23.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Embodiment one:
Referring to Fig.1-4, a kind of water level sensor, including link together lower case 6, upper housing 16,6 side of lower case
Equipped with inlet channel 17, the sealed chamber formed between lower case 6, upper housing 16 is interior to be equipped with detection part, and detection part includes
Gel silica membrane 7, gel silica membrane 7 are fixed between lower case 6, upper housing 16, and cylinder 4 is equipped among lower case 6, same on cylinder 4
Axle sleeve is equipped with the first spring 5, and 7 baseplane of gel silica membrane is overlapped with 5 top planes of the first spring, and gel silica membrane 7 is supported on first
5 top of spring, cylinder 4 and lower case 6 are integrally formed, and reduce installation step, while the first spring is arranged in 7 bottom of gel silica membrane
5, it prevents gel silica membrane 7 and lower case 6 closed together, improves sensor service life, several exhausts are equipped at the top of cylinder 4
Air discharge duct 1 is arranged at the top of cylinder 4, keeps 7 bottom stress of gel silica membrane more balanced, when making 17 air inlet of inlet channel for slot 1
Smoothly gel silica membrane 7 can be ejected upwards, the shape in 7 section of gel silica membrane be it is wavy, rebound effect is more preferable, uses the longevity
Order longer, gel silica membrane 7 is pressed on inside lower case 6 by 16 bottom margin of upper housing, simplifies installation steps, improves assembly effect
Rate, the face that 6 upper surface of lower case is contacted with gel silica membrane 7 is equipped with annular protrusion 22, and 22 cross section of annular protrusion is semicircle
The annular protrusion 22 of a semicircular structure, upper housing 16 is arranged since silica gel resilience performance is fine in structure in lower case 6
While pushing, soft silica gel will coat annular protrusion 22, play good sealing effect, guarantee sensor sealing performance,
Improve transducer sensitivity；
Sealed chamber is divided into upper chamber, lower chambers by gel silica membrane 7, and lower chambers are connected to inlet channel 17, silica gel
7 top of diaphragm is equipped with magnetic core 10, and 7 middle upper portion of gel silica membrane is equipped with integrally formed snap component, and snap component includes hollow
Cylindrical section 3, conic clamp 2,2 bottom end outer diameter of conic clamp is greater than 3 outer diameter of open circles shell of column, due in 3 inside of open circles shell of column
Sky, when squeezing conic clamp 2, conic clamp 2 can be shunk towards hollow part, improve the resilience performance of conic clamp 2,
Magnetic core 10 is connect by ejection assembly with snap component, and ejection assembly includes integrally formed chassis 8, hollow push rod 9, hollow top
9 inner wall of bar be it is ladder-like, hollow push rod 9 is arranged and is stuck in snap component, and hollow push rod 9 passes through stair-stepping inner wall and taper
Clamp 2 is connected together, and greatly simplifies installation steps, while the service life is longer, magnetic core 10 is set in outside hollow push rod 9
Using being interference fitted, 9 top of hollow push rod is inserted with limit plug 11, while hollow push rod 9 for portion, magnetic core 10 and hollow push rod 9
Tight fit is used with limit plug 11,16 screw top of upper housing is connected with nut 14, is equipped with interior hex slot 15 at the top of nut 14,
14 bottom end of nut is equipped with integrally formed position-limiting drum 13, is equipped with second spring 12, the second bullet between nut 14 and limit plug 11
12 top of spring is set on position-limiting drum 13, and 12 bottom end of second spring is set on limit plug 11, and nut 14 is designed to this kind
Structure guarantees that second spring 12 can be stablized in vertical state, plays rebound effect well, and has guiding well
Property, guarantee the movement that the completion that magnetic core 10 can be stable moves up and down, plays good damping, the shake of washing machine itself
When, the error that magnetic core 10 is generated by shake can be greatly reduced, 6 bottom of lower case is connected with coil brace 18, coil brace
Inductance coil is wound on 18, inductance coil is connect with the connecting terminal 20 that 16 side of upper housing is arranged in, magnetic core 10 and coil
Bracket 18 is coaxially disposed.
Connecting terminal 20 includes wire connecting portion, plug division, and wire connecting portion is connect with inductance coil, and wire connecting portion is vertical with plug division to be set
It sets, and plug division tail portion top surface is equipped with bulge-structure, by being vertically arranged and connecting terminal 20 is secured firmly to by bulge-structure
On coil brace 18, while raised limit point is set in 20 side of connecting terminal, good position-limiting action can be carried out to electric wire,
16 side of upper housing is equipped with harness guide groove 19, and the plug division of connecting terminal 20 is placed in harness guide groove 19, connecting terminal 20
It is three, harness guide groove 19 is divided into three notches by two partitions, and three connecting terminals 20 are respectively placed in three notches
Interior, each pocket bottom offers a draining keyway 21, and three notch designs play good guiding role, are easily installed and connect
Line work, since sensor application is in washing machine field, ambient enviroment is wet environment, and draining keyway 21 plays good draining
Guide functions prevent from leaking electricity, and coil brace 18 is fixed on 16 bottom of upper housing by the way of three-point fix, and three-point fix is more
It is firm to stablize.
Working principle: gas enters 7 lower chambers of gel silica membrane by inlet channel 17, under gas pressure, by gel silica membrane 7
Magnetic core 10 is jacked up upwards by gel silica membrane 7, the electromagnetic wire of inductance coil is cut when magnetic core is mobile, thus band by ejection upwards
The inductance of dynamic inductance coil changes, and washing machine internal water level is higher, and the height that magnetic core 10 moves upwards is higher, it is on the contrary then
It is lower, this kind of signal is then passed into washing machine water level controller and judges water level, by the way of clamping by ejection assembly with
Snap component on gel silica membrane 7 links together, by ejection assembly by magnetic core 10 and gel silica membrane 7 be connected to become one it is whole
Body, assembly technology difficulty substantially reduce, at the same guarantee magnetic core 10 can stable motion, greatly improve sensor assembly efficiency and survey
Accuracy of measurement, while 7 bottom inflow of gel silica membrane is reasonable in design, guarantees that 7 bottom of gel silica membrane is more uniformly stressed, not only prolongs
Tall sensor service life, and improve detection accuracy.
Embodiment two:
Referring to Fig.1-4, a kind of water level sensor, including link together lower case 6, upper housing 16,6 side of lower case
Equipped with inlet channel 17, the sealed chamber formed between lower case 6, upper housing 16 is interior to be equipped with detection part, and detection part includes
Gel silica membrane 7, gel silica membrane 7 are fixed between lower case 6, upper housing 16, and sealed chamber is divided into epicoele by gel silica membrane 7
Room, lower chambers, lower chambers are connected to inlet channel 17, and 7 top of gel silica membrane is equipped with magnetic core 10, and 7 middle upper portion of gel silica membrane is set
There is integrally formed snap component, snap component includes open circles shell of column 3, conic clamp 2, and 2 bottom end outer diameter of conic clamp is greater than
3 outer diameter of open circles shell of column, magnetic core 10 are connect by ejection assembly with snap component, ejection assembly include integrally formed chassis 8,
Hollow push rod 9,9 inner wall of hollow push rod be it is ladder-like, hollow push rod 9 is arranged and is stuck in snap component, and magnetic core 10 is set in sky
Outside heart mandril 9,6 bottom of lower case is connected with coil brace 18, is wound with inductance coil on coil brace 18, inductance coil with
The connecting terminal 20 that 16 side of upper housing is arranged in connects, and magnetic core 10 and coil brace 18 are coaxially disposed.
With reference to Fig. 5,9 top of hollow push rod is circumferential integrally formed with several Elastic buckles 23, and 23 top of Elastic buckle is
Bulge-structure is chamfer, magnetic core 10 is fastened between Elastic buckle 23 and chassis 8, and 16 screw top of upper housing is connected with nut 14,
Interior hex slot 15 is equipped at the top of nut 14,14 bottom end of nut is equipped with integrally formed position-limiting drum 13, nut 14 and Elastic buckle 23
Between be equipped with second spring 12,12 top of second spring is set on position-limiting drum 13, and 12 bottom end of second spring is set in elastic card
It buckles, when magnetic core 10 are installed, by magnetic core 10 and 9 coaxial placement of hollow push rod, press down on magnetic core 10 and pass through Elastic buckle
23 are fixed in hollow push rod 9, install it is simple and convenient, by a structure by second spring 12 and magnetic core 10 simultaneously
It is fixed, the use of number of parts is reduced, is increased economic efficiency.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to technical solution, design obtained from equivalent substitution or change, design, all
It should cover and be within the protection scope of the utility model.
Claims (9)
1. a kind of water level sensor, including link together lower case (6), upper housing (16), lower case (6) side is set
Have inlet channel (17), detection part is equipped in the sealed chamber formed between the lower case (6), upper housing (16), it is special
Sign is that the detection part includes gel silica membrane (7), and the gel silica membrane (7) is fixed on lower case (6), upper housing (16)
Between, the sealed chamber is divided into upper chamber, lower chambers by gel silica membrane (7), the lower chambers and inlet channel (17)
Connection, gel silica membrane (7) top are equipped with magnetic core (10), and gel silica membrane (7) middle upper portion is equipped with integrally formed card
Buckle assembly, the snap component include open circles shell of column (3), conic clamp (2), and conic clamp (2) bottom end outer diameter is greater than
Open circles shell of column (3) outer diameter, the magnetic core (10) are connect by ejection assembly with snap component, and the ejection assembly includes one
Molding chassis (8), hollow push rod (9), hollow push rod (9) inner wall be it is ladder-like, the hollow push rod (9) is arranged and blocks
In snap component, the magnetic core (10) is set in hollow push rod (9) outside, and lower case (6) bottom is connected with coil branch
Frame (18), is wound with inductance coil on the coil brace (18), the inductance coil and is arranged in upper housing (16) side
Connecting terminal (20) connection, the magnetic core (10) and coil brace (18) are coaxially disposed.
2. a kind of water level sensor according to claim 1, which is characterized in that the magnetic core (10) and hollow push rod (9)
Using interference fit, hollow push rod (9) top is inserted with limit plug (11), upper housing (16) the screw top connection
Have nut (14), be equipped with interior hex slot (15) at the top of the nut (14), nut (14) bottom end is equipped with integrally formed limit
Position cylinder (13) is equipped with second spring (12) between the nut (14) and limit plug (11), second spring (12) top
It is set on position-limiting drum (13), second spring (12) bottom end is set in limit plug (11).
3. a kind of water level sensor according to claim 1, which is characterized in that hollow push rod (9) top circumferential one
Body formed to have several Elastic buckles (23), Elastic buckle (23) top is beveling bulge-structure, magnetic core (10) card
It is located between Elastic buckle (23) and chassis (8), upper housing (16) screw top is connected with nut (14), the nut
(14) top is equipped with interior hex slot (15), and nut (14) bottom end is equipped with integrally formed position-limiting drum (13), the nut
(14) second spring (12) are equipped between Elastic buckle (23), second spring (12) top is set in position-limiting drum (13)
On, second spring (12) bottom end is set on Elastic buckle.
4. a kind of water level sensor according to claim 1, which is characterized in that the shape in gel silica membrane (7) section
To be wavy, the gel silica membrane (7) is pressed on lower case (6) inside, the lower case by upper housing (16) bottom margin
(6) face that upper surface is contacted with gel silica membrane (7) is equipped with annular protrusion (22), and the annular protrusion (22) cross section is semicircle
Shape structure.
5. a kind of water level sensor according to claim 1, which is characterized in that be equipped with cylinder among the lower case (6)
(4), coaxial sleeve is equipped with the first spring (5) on the cylinder (4), at the top of gel silica membrane (7) baseplane and the first spring (5)
Plane is overlapped.
6. a kind of water level sensor according to claim 5, which is characterized in that be equipped with several at the top of the cylinder (4)
Air discharge duct (1).
7. a kind of water level sensor according to claim 1, which is characterized in that the connecting terminal (20) includes wiring
Portion, plug division, the wire connecting portion are connect with inductance coil, and the wire connecting portion is vertically arranged with plug division, and the plug division tail
Portion top surface is equipped with bulge-structure, and upper housing (16) side is equipped with harness guide groove (19), and the connecting terminal (20) is inserted
Socket part is placed in harness guide groove (19).
8. a kind of water level sensor according to claim 7, which is characterized in that the connecting terminal (20) is three, institute
It states harness guide groove (19) and is divided into three notches by two partitions, three connecting terminals (20) are respectively placed in three slots
In mouthful, each pocket bottom offers a draining keyway (21).
9. a kind of water level sensor according to claim 1, which is characterized in that the coil brace (18) is fixed using 3 points
The mode of position is fixed on upper housing (16) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920250837.XU CN209326739U (en) | 2019-02-27 | 2019-02-27 | A kind of water level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920250837.XU CN209326739U (en) | 2019-02-27 | 2019-02-27 | A kind of water level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209326739U true CN209326739U (en) | 2019-08-30 |
Family
ID=67732534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920250837.XU Active CN209326739U (en) | 2019-02-27 | 2019-02-27 | A kind of water level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209326739U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708722A (en) * | 2019-02-27 | 2019-05-03 | 芜湖乐佳电器有限公司 | A kind of water level sensor |
-
2019
- 2019-02-27 CN CN201920250837.XU patent/CN209326739U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708722A (en) * | 2019-02-27 | 2019-05-03 | 芜湖乐佳电器有限公司 | A kind of water level sensor |
| CN109708722B (en) * | 2019-02-27 | 2024-01-23 | 芜湖乐佳电器有限公司 | Water level sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109708722A (en) | A kind of water level sensor | |
| CN209326739U (en) | A kind of water level sensor | |
| CN204679144U (en) | Level sensor on level sensor and washing machine | |
| CN109706698A (en) | Water level sensor of washing machine | |
| CN209602831U (en) | Water level sensor of washing machine | |
| CN205529549U (en) | Compact structure type level sensor | |
| CN209841124U (en) | Chip type fluid sensor | |
| CN108645478A (en) | Water level sensor | |
| CN208606926U (en) | Micro-pressure sensor | |
| CN207300358U (en) | A kind of water level sensor | |
| CN208420115U (en) | A kind of water level sensor structure | |
| CN210486919U (en) | Sensor with compact structure | |
| CN110174157A (en) | A kind of water level sensor of modularization operation easy to produce | |
| CN216483344U (en) | Water level sensor with single buckling connection | |
| CN211696920U (en) | Automobile air conditioner compressor electric control valve calibration machine | |
| CN217922676U (en) | Novel washing machine | |
| CN214066266U (en) | Water level sensor with good detection precision | |
| CN110186534A (en) | A kind of chip-shaped fluid sensor | |
| CN108645480A (en) | Use in washing machine water level sensor | |
| CN2263121Y (en) | Air damping absorber | |
| CN216410324U (en) | Compact water level sensor | |
| CN209659552U (en) | A kind of earphone moving coil support | |
| CN208672211U (en) | A kind of micro-pressure sensor magnetic core connection structure | |
| CN111935568A (en) | Loudspeaker module | |
| CN110174155A (en) | A kind of water level sensor that inner space is neatly changed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |