CN109706698A - Water level sensor of washing machine - Google Patents
Water level sensor of washing machine Download PDFInfo
- Publication number
- CN109706698A CN109706698A CN201910144096.1A CN201910144096A CN109706698A CN 109706698 A CN109706698 A CN 109706698A CN 201910144096 A CN201910144096 A CN 201910144096A CN 109706698 A CN109706698 A CN 109706698A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- lower case
- silica membrane
- pcb board
- gel silica
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000005406 washing Methods 0.000 title claims abstract description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000012528 membrane Substances 0.000 claims abstract description 48
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 48
- 210000004907 gland Anatomy 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 239000011324 bead Substances 0.000 claims description 6
- 230000014759 maintenance of location Effects 0.000 claims description 6
- 210000000481 breast Anatomy 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The present invention relates to water level sensor technical fields, especially water level sensor of washing machine, including the upper housing to link together, lower case, the lower case bottom is equipped with integrally formed inlet channel, the upper housing, detection device is equipped between lower case, the detection device includes inductance coil bracket, gel silica membrane, inductance coil bracket includes cylinder, the cylinder top is integrally formed with pcb board bracket, pcb board frame upper is equipped with pcb board, pcb board is electrically connected with the inductance coil being wrapped in the middle part of cylinder, the bottom of cylinder is integrally formed with diaphragm gland, the diaphragm gland is fixed together with lower case, the gel silica membrane is sealed in inside lower case by diaphragm gland, the chamber of the inlet channel and gel silica membrane lower part, the gel silica membrane top is equipped with and is used cooperatively with inductance coil Magnetic core.The entire sensor structure of the present apparatus is more compact, assembles up more convenient and secured, and reasonable in design, the service life is longer.
Description
Technical field
The present invention relates to water level sensor technical field more particularly to water level sensor of washing machine.
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.
Summary of the invention
The purpose of the present invention is to solve sensor assembly method in the prior art is unreasonable, influences assembly efficiency and make
The problem of with effect, and the water level sensor of washing machine proposed.
To achieve the goals above, present invention employs following technical solutions:
Design water level sensor of washing machine, including link together upper housing, lower case, the lower case bottom is equipped with
Integrally formed inlet channel is equipped with detection device between the upper housing, lower case, the detection device includes inductance coil
Bracket, gel silica membrane, the inductance coil bracket includes cylinder, and the cylinder top is described integrally formed with pcb board bracket
Pcb board frame upper is equipped with pcb board, and the pcb board is electrically connected with the inductance coil being wrapped in the middle part of cylinder, the bottom of cylinder
Integrally formed with diaphragm gland, the diaphragm gland is fixed together with lower case, and the gel silica membrane is close by diaphragm gland
It is enclosed in inside lower case, the chamber of the inlet channel and gel silica membrane lower part, the gel silica membrane top is equipped with and electricity
The magnetic core that sense fitting coils use.
Preferably, the upper housing, lower case are fixed together using the connection type of buckle.
Preferably, the lower case is step structure, and lower case bottom top is justified integrally formed with limit
Ring.
Preferably, the gel silica membrane cross sectional shape is wavy shaped configuration, and gel silica membrane edge basal surface position is under
The face of shell contact is equipped with integrally formed annular protrusion, and the limiting groove to lower recess, institute are equipped among the gel silica membrane
It states limiting groove bosom and is equipped with the retention bead to raise upward, coaxial sleeve is equipped between the limiting groove and limit annulus
Second spring.
Preferably, the gel silica membrane top is equipped with connection component, and the connection component includes integrally formed ejector sleeve
Cylinder, support plate, the ejection sleeve run through support plate, and the support plate is in contact with the horizontal plane of gel silica membrane, and the top
Collet head is between retention bead and limiting groove out, and the magnetic core is set on ejection sleeve, and the magnetic core is plugged in circle
Cylinder is internal.
Preferably, limit plug is inserted at the top of the magnetic core, the magnetic core is pressed on connection component by limiting plug
Support plate on, the barrel top is threaded with nut, offers interior hexagonal groove, and the nut at the top of the nut
Bottom end is equipped with column-shaped projection, the first spring is equipped between the nut and magnetic core, it is convex that first spring top is set in cylindricality
On rising, first spring bottom end is set on limit plug.
Preferably, diaphragm gland side is equipped with the first relief hole, and the cylinder side is equipped with the second relief hole, described
Second relief hole is placed between nut and magnetic core.
Preferably, on the cylinder integrally formed with harness plate, opened up on the harness plate there are two it is symmetrically arranged across
Geosynclinal concave mouth.
Preferably, the pcb board center offers circular hole, and the cylinder runs through pcb board, and the cylinder is circumferentially with
First back-off, the pcb board are connected and fixed together by the first back-off with cylinder.
Preferably, the upper housing side is equipped with recess, and the recess is corresponding with pcb board position, and recess sidewall is equipped with
Horizontally disposed second gib block, the recess top is affixed, and there are two horizontally disposed guide plates, are placed in the guide plate of downside
Bottom is equipped with the second back-off, and the pcb board bracket is equipped with the first gib block.
Water level sensor of washing machine proposed by the present invention, beneficial effect are: the entire sensor structure of the present apparatus more steps up
It gathers, reduces sensor space occupancy, pcb board is installed stronger, will not generate shaking, guarantee the connecting line of inductance coil
Can remain relative static conditions with pcb board, improve sensor service life, entire inductance coil bracket using one at
The structure of type designs, and reduces part usage quantity, reduces assembly process, improves sensor assembly efficiency, gel silica membrane interposition
It installs and is set to concaveconvex structure, can effectively fix connection component position, when gel silica membrane moves up and down, magnetic core can be steady
Determine up and down, degree of the magnetic core by external interference can be greatly reduced, relief hole is set, reduce level measuring deviation, improves
Measurement accuracy.
Detailed description of the invention
Fig. 1 is three-dimensional half section structure diagram of the invention；
Fig. 2 is half-sectional schematic view of the front view of the invention；
Fig. 3 is the half-sectional configuration schematic diagram of solid of the invention；
Fig. 4 is overall appearance schematic perspective view of the invention；
Fig. 5 is gel silica membrane half section structure diagram of the invention；
Fig. 6 is inside schematic perspective view of the invention；
Fig. 7 is harness plate structural schematic diagram of the invention.
In figure: inlet channel 1, limit annulus 2, limiting groove 3, retention bead 4, gel silica membrane 5, the first relief hole 6,
Pcb board bracket 7, nut 8, upper housing 9, the first spring 10, the second relief hole 11, pcb board 12, limit plug 13, cylinder 14, film
Piece gland 15, magnetic core 16, connection component 17, lower case 18, second spring 19, the first gib block 20, the second gib block 21, guiding
Plate 22, coiling protrusion 23, cross-slot recess 24, first are buckled to 25, harness plate 26.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-7, water level sensor of washing machine, including link together upper housing 9, lower case 18, upper housing 9,
Lower case 18 is fixed together using the connection type of buckle, is fastened togather upper-lower casing by way of buckle, is improved
Sensor assembly efficiency, lower case 18 are step structure, keep entire sensor structure more compact using this kind design, reduce
Sensor space occupancy, 18 bottom of lower case are equipped with integrally formed inlet channel 1, are equipped between upper housing 9, lower case 18
Detection device；
Detection device includes inductance coil bracket, gel silica membrane 5, and inductance coil bracket includes cylinder 14,14 top of cylinder
Integrally formed with pcb board bracket 7,7 top of pcb board bracket is equipped with pcb board 12, pcb board 12 and the electricity for being wrapped in 14 middle part of cylinder
Feel coil electrical connection, with reference to Fig. 3, Fig. 6,12 center of pcb board offers circular hole, and cylinder 14 runs through pcb board 12, and cylinder 14 weeks
To the first back-off 25 is equipped with, pcb board 12 is connected and fixed together by the first back-off 25 with cylinder 14, and pcb board 12 uses center
Pcb board 12 is directly set on cylinder 14 by circular hole design, installation when, then presses down on the installation for completing pcb board 12,
This kind of mounting means is very convenient, while the installation of pcb board 12 is stronger, will not generate shaking, guarantee the company of inductance coil
Wiring can remain relative static conditions with pcb board 12, sensor service life be improved, with reference to Fig. 1-3,14 bottom of cylinder
Integrally formed with diaphragm gland 15, diaphragm gland 15 is fixed together with lower case 18, buckle is arranged on the inside of lower case 18, in film
Annular protrusion is arranged in 15 outer rim of piece gland, and diaphragm gland 15 and lower case 18 are fixed on one by buckle and annular protrusion
It rises, gel silica membrane 5 is sealed in inside lower case 18 by diaphragm gland 15, and entire inductance coil bracket uses integrally formed knot
Structure design, reduces part usage quantity, reduces assembly process, improves sensor assembly efficiency, inlet channel 1 and gel silica membrane 5
The chamber of lower part, 5 top of gel silica membrane are equipped with the magnetic core 16 being used cooperatively with inductance coil.
With reference to Fig. 1, Fig. 5,18 bottom top of lower case is integrally formed with limit annulus 2,5 cross sectional shape of gel silica membrane
Wavy shaped configuration, gel silica membrane 5 use undulated design, are conducive to the up and down motion of 5 middle position of gel silica membrane, elastic recovery
Can more preferably, the face that 5 edge basal surface position of gel silica membrane is contacted with lower case 18 is equipped with integrally formed annular protrusion, passes through diaphragm
The pressure of gland 15 is when set gel silica membrane 5, and the presence of annular protrusion improves 15 sealing performance of diaphragm gland, among gel silica membrane 5
Equipped with the limiting groove 3 to lower recess, 3 bosom of limiting groove is equipped with the retention bead 4 that raises upward, limiting groove 3 with
It limits coaxial sleeve between annulus 2 and is equipped with second spring 19, second spring 19 is set in 5 bottom of gel silica membrane, it can be to pellosil
Piece 5 plays good supporting role, extends 5 service life of gel silica membrane, while can be direct between gel silica membrane 5 and lower case 18
It is arranged second spring 19, the support of other auxiliary components is not needed, effectively improves assembly efficiency；
With reference to Fig. 1,5 top of gel silica membrane is equipped with connection component 17, connection component 17 include integrally formed ejection sleeve,
Support plate, ejection sleeve run through support plate, and support plate is in contact with the horizontal plane of gel silica membrane 5, and eject collet head and limiting
Between protrusion 4 and limiting groove 3,5 middle position of gel silica membrane is arranged to concaveconvex structure, it can be effectively by connection component 17
Fixation is set, guarantees the stable up and down motion of connection component 17, magnetic core 16 is set on ejection sleeve, and magnetic core 16 is plugged in cylinder
Inside 14, limit plug 13, the support that magnetic core 16 is pressed on connection component 17 by limiting plug 13 are inserted at the top of magnetic core 16
On disk, 14 screw top of cylinder is connected with nut 8, interior hexagonal groove is offered at the top of nut 8, and 8 bottom end of nut is equipped with cylindricality
Protrusion is equipped with the first spring 10 between nut 8 and magnetic core 16,10 top of the first spring is set on column-shaped projection, the first spring
10 bottom ends are set on limit plug 13, and magnetic core 16 is fixed on connection component under limit plug 13 and the effect of the first spring 10
On 17, when gel silica membrane 5 moves up and down, magnetic core 16 can stablize up and down, and magnetic core 16 can be greatly reduced by the external world
The degree of interference improves sensor detection accuracy.
Since the water level sensor pushes magnetic core to complete to carry out water level detecting by the way of cutting magnetic induction line movement using air pressure,
Therefore sensor internal air pressure can also generate certain influence to sensor detection accuracy, in order to improve sensor detection accuracy,
15 side of diaphragm gland is equipped with the first relief hole 6, and 14 side of cylinder is equipped with the second relief hole 11, and the second relief hole 11 is placed in nut
Air cavity between 8 and magnetic core 16, when gas push gel silica membrane 5 moves upwards, between gel silica membrane 5 and diaphragm gland 15
It will reduce, chamber interior air pressure will will increase, and first relief hole 6 is arranged, can be by the chamber interior air pressure and the external world
Air pressure is balanced, and guarantees gel silica membrane 5 when move upwards, will not because of upper chamber air pressure variation and generate detection
Deviation, while the air pressure of cylinder interior can be carried out Fast-Balance by the second relief hole, improve detection accuracy.
With reference to Fig. 6-7, in order to facilitate the winding of enameled wire, integrally formed with harness plate 26 on cylinder 14, on harness plate 26
Symmetrically arranged cross-slot recess 24 there are two opening up, can limit enameled wire by harness plate 26, while cross-slot recess
24 design makes the easier for installation of enameled wire convenient for the use of enameled wire cross-slot.
With reference to Fig. 3-4, extraneous control system and pcb board 12 are electrically connected for convenience, 9 side of upper housing equipped with recess,
Recess is corresponding with 12 position of pcb board, and recess sidewall is equipped with horizontally disposed second gib block 21, there are two recess top is affixed
Horizontally disposed guide plate 22,22 bottom of guide plate for being placed in downside are equipped with the second back-off, and pcb board bracket 7 is equipped with first and leads
To item 20, multi-guide component is set, guarantees that external element stablizes firm link together with pcb board 12.
Working principle: the tracheae of washing machine water drum links together with inlet channel 1, when washing machine inflow, gas
Enter 5 lower part air cavity of gel silica membrane by inlet channel 1, gel silica membrane 5 is jacked up upwards by gas, transports magnetic core 16 upwards
It is dynamic, the electromagnetic wire of inductance coil is cut when magnetic core is mobile, so that the inductance of inductance coil be driven to change, is become by this kind
Change judges height of water level.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to technical solution, design obtained from equivalent substitution or change, design, should all cover in protection model of the invention
Within enclosing.
Claims (10)
1. water level sensor of washing machine, including link together upper housing (9), lower case (18), lower case (18) bottom
Portion is equipped with integrally formed inlet channel (1), and detection device is equipped between the upper housing (9), lower case (18), and feature exists
In the detection device includes inductance coil bracket, gel silica membrane (5), and the inductance coil bracket includes cylinder (14), described
Cylinder (14) top is equipped with pcb board (12) integrally formed with pcb board bracket (7), pcb board bracket (7) top, the PCB
Plate (12) is electrically connected with the inductance coil being wrapped in the middle part of cylinder (14), and cylinder (14) bottom is integrally formed with diaphragm gland
(15), the diaphragm gland (15) is fixed together with lower case (18), and the gel silica membrane (5) is close by diaphragm gland (15)
It is internal to be enclosed in lower case (18), the chamber of the inlet channel (1) and gel silica membrane (5) lower part, the gel silica membrane (5)
Top is equipped with the magnetic core (16) being used cooperatively with inductance coil.
2. water level sensor of washing machine according to claim 1, which is characterized in that the upper housing (9), lower case (18)
It is fixed together using the connection type of buckle.
3. water level sensor of washing machine according to claim 1, which is characterized in that the lower case (18) is ladder-like knot
Structure, and the lower case (18) bottom top is integrally formed with limit annulus (2).
4. water level sensor of washing machine according to claim 3, which is characterized in that gel silica membrane (5) cross sectional shape
For wavy shaped configuration, the face that gel silica membrane (5) the edge basal surface position is contacted with lower case (18) is equipped with integrally formed ring
Shape protrusion, the intermediate limiting groove (3) being equipped with to lower recess of the gel silica membrane (5), limiting groove (3) bosom are set
There is the retention bead (4) to raise upward, coaxial sleeve is equipped with second spring between the limiting groove (3) and limit annulus (2)
(19)。
5. water level sensor of washing machine according to claim 4, which is characterized in that gel silica membrane (5) top is equipped with
Connection component (17), the connection component (17) include integrally formed ejection sleeve, support plate, and the ejection sleeve is through branch
Support plate, the support plate are in contact with the horizontal plane of gel silica membrane (5), and the ejection collet head is in retention bead (4) and limit
Between position groove (3), the magnetic core (16) is set on ejection sleeve, and the magnetic core (16) is plugged in cylinder (14) inside.
6. water level sensor of washing machine according to claim 5, which is characterized in that plugged at the top of the magnetic core (16) limited
Position plug (13), the magnetic core (16) are pressed in the support plate of connection component (17) by limiting plug (13), the cylinder
(14) screw top is connected with nut (8), offers interior hexagonal groove at the top of the nut (8), and the nut (8) bottom end is set
There is column-shaped projection, is equipped with the first spring (10) between the nut (8) and magnetic core (16), the first spring (10) top is arranged
On column-shaped projection, the first spring (10) bottom end is set in limit plug (13).
7. water level sensor of washing machine according to claim 6, which is characterized in that diaphragm gland (15) side is equipped with
First relief hole (6), cylinder (14) side are equipped with the second relief hole (11), and second relief hole (11) is placed in nut
(8) between magnetic core (16).
8. water level sensor of washing machine according to claim 1, which is characterized in that on the cylinder (14) integrally formed with
Harness plate (26), opens up that there are two symmetrically arranged cross-slot recesses (24) on the harness plate (26).
9. water level sensor of washing machine according to claim 1, which is characterized in that open pcb board (12) center
Equipped with circular hole, the cylinder (14) runs through pcb board (12), and the cylinder (14) is circumferentially with the first back-off (25), the pcb board
(12) it is connected and fixed together by the first back-off (25) and cylinder (14).
10. water level sensor of washing machine according to claim 1, which is characterized in that upper housing (9) side is equipped with recessed
Mouthful, the recess is corresponding with pcb board (12) position, and recess sidewall is equipped with horizontally disposed second gib block (21), described recessed
Mouth top is affixed there are two horizontally disposed guide plate (22), and guide plate (22) bottom for being placed in downside is equipped with the second back-off, institute
Pcb board bracket (7) are stated equipped with the first gib block (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910144096.1A CN109706698A (en) | 2019-02-27 | 2019-02-27 | Water level sensor of washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910144096.1A CN109706698A (en) | 2019-02-27 | 2019-02-27 | Water level sensor of washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109706698A true CN109706698A (en) | 2019-05-03 |
Family
ID=66265219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910144096.1A Pending CN109706698A (en) | 2019-02-27 | 2019-02-27 | Water level sensor of washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109706698A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108783700A (en) * | 2018-06-30 | 2018-11-13 | 江南大学 | A kind of human body three-dimensional scanner |
| CN110186534A (en) * | 2019-06-27 | 2019-08-30 | 芜湖乐佳电器有限公司 | A kind of chip-shaped fluid sensor |
| CN111593533A (en) * | 2020-05-30 | 2020-08-28 | 广东蓝水花智能电子有限公司 | Method for installing detection sensor for washing machine and detection sensor for washing machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400411A (en) * | 2016-11-23 | 2017-02-15 | 芜湖乐佳电器有限公司 | Water level sensor structure |
| CN209602831U (en) * | 2019-02-27 | 2019-11-08 | 芜湖乐佳电器有限公司 | Water level sensor of washing machine |
-
2019
- 2019-02-27 CN CN201910144096.1A patent/CN109706698A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400411A (en) * | 2016-11-23 | 2017-02-15 | 芜湖乐佳电器有限公司 | Water level sensor structure |
| CN209602831U (en) * | 2019-02-27 | 2019-11-08 | 芜湖乐佳电器有限公司 | Water level sensor of washing machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108783700A (en) * | 2018-06-30 | 2018-11-13 | 江南大学 | A kind of human body three-dimensional scanner |
| CN108783700B (en) * | 2018-06-30 | 2021-04-06 | 江南大学 | Human body three-dimensional scanner |
| CN110186534A (en) * | 2019-06-27 | 2019-08-30 | 芜湖乐佳电器有限公司 | A kind of chip-shaped fluid sensor |
| CN111593533A (en) * | 2020-05-30 | 2020-08-28 | 广东蓝水花智能电子有限公司 | Method for installing detection sensor for washing machine and detection sensor for washing machine |
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