CN105451494A - Waterproof technology and device of fluid instrument - Google Patents
Waterproof technology and device of fluid instrument Download PDFInfo
- Publication number
- CN105451494A CN105451494A CN201610052115.4A CN201610052115A CN105451494A CN 105451494 A CN105451494 A CN 105451494A CN 201610052115 A CN201610052115 A CN 201610052115A CN 105451494 A CN105451494 A CN 105451494A
- Authority
- CN
- China
- Prior art keywords
- waterproof case
- display screen
- circuit board
- shield ring
- glue
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/061—Hermetically-sealed casings sealed by a gasket held between a removable cover and a body, e.g. O-ring, packing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/064—Hermetically-sealed casings sealed by potting, e.g. waterproof resin poured in a rigid casing
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a waterproof technology and device of a fluid instrument. The waterproof technology comprises the following steps that a display screen is fixed to the upper surface of a circuit board, and a sealing check ring is arranged on the periphery of a visual area of the display screen; the circuit board is arranged at the lower portion of an upper waterproof shell and fixed after being compressed; after the circuit board is connected with a circuit, and glue is poured into the circuit board from the lower portion through a hole in the circuit board. By the adoption of the multiple waterproof structures, the waterproof effect is good; EVA cushion cotton is adopted, the display screen is protected, the cost is low, and production is easy.
Description
Technical field
The present invention relates to water-tight field, be specifically related to a kind of waterproof technology and device of flow liquid meter.
Background technology
The waterproof of existing flow liquid meter is generally by upper and lower two shells, inner encapsulating realizes, display screen and circuit board are all wrapped up, glue has just all been filled in gap between such display screen and transparent outer cover, be full of cracks, glue and transparent outer cover delamination, glue weather stain is there will be etc. passing glue in time after glue curing and sclerosis, the viewing area of display screen is capped, and impact uses; In addition along with the change of weather temperature, display screen is different from the expansion rate of glue and circuit board, and display screen can be caused to occur the problem damaged.
Summary of the invention
The invention provides a kind of flow liquid meter waterproof technology and device of isolating embedding glue.
The technical solution used in the present invention is: a kind of waterproof dosing technology of flow liquid meter, comprises the following steps:
Display screen is fixed on circuit board upper surface, Sealing shield ring is set in periphery, display screen viewing area;
Circuit board is arranged on upper waterproof case bottom, fixing after compressing;
After carefully connecting the wire from circuit board, from its underpart by the internally encapsulating of the hole circuit board.
Further, described Sealing shield ring is that EVA buffering cotton is made, and the gum cushioned on cotton by EVA bonds to periphery, display screen viewing area.
Further, by method for tooling, Sealing shield ring is fixed on the periphery, viewing area of display screen; Concrete steps are as follows:
Sealing shield ring arranges gum;
Gum glue faces up, and Sealing shield ring is put into frock;
Location hole is set on circuit boards, circuit board is put into frock, by location hole, Sealing shield ring is positioned;
Circuit board presses down, and Sealing shield ring and display screen are fitted.
Further, further comprising the steps of, after adhesive curing, lower waterproof case and upper waterproof case are fixed; Seal groove is set at upper waterproof case and lower waterproof case connecting portion, the built-in sealing ring of seal groove.
Further, described glue is two component AB epoxy glues.
Further, described pair of component AB epoxy glue is organosilicon AB glue.
Further, upper waterproof case and lower waterproof case arrange compression upper cover on upper waterproof case top after fixing.
A water-tight device for flow liquid meter, comprises waterproof case, lower waterproof case, circuit board, display screen, glue-line; Described upper waterproof case is connected with lower waterproof case, between form cavity; Circuit board, display screen are fixedly installed in the cavity that upper waterproof case and lower waterproof case form by glue-line; Described display screen is fixedly installed on circuit board top; Periphery, viewing area, display screen top is provided with a Sealing shield ring, forms a space by Sealing shield ring between upper waterproof case and the viewing area of display screen.
Further, the connecting portion of described upper waterproof case and lower waterproof case arranges sealing ring.
Further, described upper waterproof case top is fixedly installed compression upper cover.
The invention has the beneficial effects as follows:
(1) the present invention arranges Sealing shield ring in periphery, display screen viewing area, the viewing area of display screen is isolated in outside encapsulating district, avoids glue and be separated with shell, and the aging grade of glue is to the destruction of display screen;
(2) above form a space between waterproof case and the viewing area of display screen in the present invention, this space is less, even if hydrone is from entering this space, the fog of generation is not enough to produce harm;
(3) the present invention is by multilayer flashing technique, can effectively avoid hydrone to enter the viewing area of display screen;
(4) present invention process process is simple, good water-proof effect, cost are low, effectively can protect display screen.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: waterproof case under the upper waterproof case of 1-, 2-, 3-display screen, 4-Sealing shield ring, 5-circuit board, 6-sealing ring, 7-compresses upper cover.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
A waterproof dosing technology for flow liquid meter, comprises the following steps:
Display screen 3 is fixed on circuit board 5 upper surface, Sealing shield ring 4 is set in periphery, display screen 3 viewing area;
Circuit board 5 is arranged on upper waterproof case 1 bottom, fixing after compressing;
After carefully connecting the wire from circuit board 5, from its underpart by the hole internally encapsulating circuit board 5.
Further, described Sealing shield ring 4 is made for EVA cushions cotton, and the gum cushioned on cotton by EVA bonds to periphery, display screen 3 viewing area; It is that ethylene-vinyl acetate copolymer foaming materials is made that EVA cushions cotton, and one side carries adhesive sticker; Cost is low, water resistance good, have cushioning effect; EVA buffering is cotton has certain elasticity, and display screen 3 is generally glass material, can prevent because the coefficient of expansion is different, causes internal stress to become large, and cause the damage of display screen because of variations in temperature; Sealing shield ring 4 is not limited in and adopts EVA buffering cotton, also can adopt rubber seal or PC plastics; But the elasticity of EVA buffering cotton is better, is carrying out, under air-proof condition, can reducing the pressure to display screen 3, thus protection display screen.
Further, by method for tooling, Sealing shield ring is fixed on the periphery, viewing area of display screen 3; Concrete steps are as follows:
Sealing shield ring 4 arranges gum;
Gum glue faces up, and Sealing shield ring 4 is put into frock;
Circuit board 5 arranges location hole, circuit board 5 is put into frock, by location hole, Sealing shield ring 4 is positioned;
Circuit board 5 presses down, and Sealing shield ring 4 and display screen 3 are fitted.
This bonding way, can ensure that Sealing shield ring 4 and display screen 3 are fitted completely, prevent glue in encapsulating process from entering the front of display screen 3.
Further, further comprising the steps of, after adhesive curing, lower waterproof case 2 is fixed with upper waterproof case 1; With lower waterproof case 2 connecting portion, seal groove is set, the built-in sealing ring 6 of seal groove at upper waterproof case 1; Sealing ring 6 waterproof is further set between upper waterproof case 1 and lower waterproof case 2.
Further, described glue is two component AB epoxy glues; Being preferably two component AB epoxy glue is organosilicon AB glue; Organosilicon AB glue has the feature of high-adhesive-strength, soft, can have certain cushioning effect, effective protection display screen 3.
Further, after upper waterproof case 1 is fixing with lower waterproof case 2, arranges on upper waterproof case 1 top and compress upper cover 7; By compressing the fixing upper waterproof case 1 of upper cover 7, and can waterproof further.
Outside the viewing area, front of display screen 3, arrange the spongiform EVA of a circle cushion cotton Sealing shield ring 4, Sealing shield ring 4 is bonded in outside the viewing area of display screen 3 by gum; Circuit board 5 is provided with location hole, is fixedly mounted on by screw in the cavity of upper waterproof case 1 and lower waterproof case 2 formation; The cotton pressure by circuit board 5, display screen 3 and screw lock of EVA buffering and upper waterproof case 1 are fitted and are prevented glue in encapsulating process from entering the front of display screen 3; Ground floor waterproof is formed between upper waterproof case 1 and lower waterproof case 2; By encapsulating, circuit board 5, display screen 3 are formed second layer waterproof by encapsulation technology; Upper waterproof case 1 top arranges compression upper cover 7 and forms third layer waterproof construction.
In the following ways, bonding buffering is cotton: with gum on buffering is cotton, the protection paster cushioned on cotton gum takes off, glue towards on put into frock; Circuit board 5 and display screen 3, by being welded together, put into frock the circuit board 5 with display screen 3; Positioned by the location hole on circuit board 5, buffering cotton is made a circle bonding outside viewing area; Then downward for circuit board 5 straightening is fitted completely to display screen 3 and gum glue face; Then take out and put into transparent upper waterproof case 1, be fixed by screw.
Between upper waterproof case 1 and display screen 3, form a less space by Sealing shield ring 4, this space does not have condition to generate aqueous vapor, water smoke; Avoid and reflect unclear because glue and transparent upper waterproof case 1 delamination cause, it is unclear that glue becomes the color be full of cracks transparency information that has the phenomenons such as crackle to cause display screen 3 viewing area to show not; And the change avoided due to temperature causes display screen 3 stress to increase, cause the problem of damage.
A water-tight device for flow liquid meter, comprises waterproof case 1, lower waterproof case 2, circuit board 5, display screen 3, glue-line 8; Described upper waterproof case 1 is connected with lower waterproof case 2, between form cavity; Circuit board 5, display screen 3 are fixedly installed in the cavity that upper waterproof case 1 and lower waterproof case 2 form by glue-line 8; Described display screen 3 is fixedly installed on circuit board 5 top; Periphery, viewing area, display screen 3 top is provided with a Sealing shield ring 4, forms a space by Sealing shield ring 4 between upper waterproof case 1 and the viewing area of display screen 3.
Further, described upper waterproof case 1 arranges sealing ring 6 with the connecting portion of lower waterproof case 2;
Further, described upper waterproof case 1 top is fixedly installed and compresses upper cover 7.
The present invention by arranging multiple waterproof construction, good water-proof effect, and solves the problem that the display screen that exists in existing encapsulating technology easily destroys; The present invention adopts EVA to cushion cotton good water-proof effect, and has cushioning effect due to it, can also play a protective role, and cost is low to display screen, and technological operation is simple, is easy to produce and more can protects comparatively fragile display screen.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a waterproof technology for flow liquid meter, is characterized in that, comprises the following steps:
Display screen (3) is fixed on circuit board (5) upper surface, Sealing shield ring (4) is set in display screen (3) periphery, viewing area;
Circuit board (5) is arranged on upper waterproof case (1) bottom, fixing after compressing;
After carefully connecting the wire from circuit board (5), from its underpart by the hole internally encapsulating circuit board (5).
2. the waterproof technology of a kind of flow liquid meter according to claim 1, is characterized in that, described Sealing shield ring (4) is made for EVA cushions cotton, and the gum cushioned on cotton by EVA bonds to display screen (3) periphery, viewing area.
3. the waterproof technology of a kind of flow liquid meter according to claim 1 and 2, is characterized in that, by method for tooling, Sealing shield ring is fixed on the periphery, viewing area of display screen (3); Concrete steps are as follows:
(4) arrange gum to Sealing shield ring;
Gum glue faces up, and Sealing shield ring (4) is put into frock;
Circuit board (5) arranges location hole, circuit board (5) is put into frock, by location hole, Sealing shield ring (4) is positioned;
Circuit board (5) presses down, and Sealing shield ring (4) and display screen (3) are fitted.
4. the waterproof technology of a kind of flow liquid meter according to claim 1, is characterized in that, further comprising the steps of, after adhesive curing, lower waterproof case (2) and upper waterproof case (1) is fixed; At upper waterproof case (1) and lower waterproof case (2) connecting portion, seal groove is set, the built-in sealing ring of seal groove (6).
5. the waterproof technology of a kind of flow liquid meter according to claim 1, is characterized in that, described glue is two component AB epoxy glues.
6. the waterproof technology of a kind of flow liquid meter according to claim 5, is characterized in that, described pair of component AB epoxy glue is organosilicon AB glue.
7. the waterproof technology of a kind of flow liquid meter according to claim 1, it is characterized in that, after upper waterproof case (1) is fixing with lower waterproof case (2), arranges on upper waterproof case (1) top and compress upper cover (7).
8. a water-tight device for flow liquid meter, is characterized in that, comprises waterproof case (1), lower waterproof case (2), circuit board (5), display screen (3), glue-line (8); Described upper waterproof case (1) is connected with lower waterproof case (2), between form cavity; Circuit board (5), display screen (3) are fixedly installed in the cavity that upper waterproof case (1) and lower waterproof case (2) form by glue-line (8); Described display screen (3) is fixedly installed on circuit board (5) top; Periphery, display screen (3) viewing area, top is provided with a Sealing shield ring (4), forms a space by Sealing shield ring (4) between upper waterproof case (1) and the viewing area of display screen (3).
9. the water-tight device of a kind of flow liquid meter according to claim 8, is characterized in that, described upper waterproof case (1) arranges sealing ring (6) with the connecting portion of lower waterproof case (2).
10. the water-tight device of a kind of flow liquid meter according to claim 8, is characterized in that, described upper waterproof case (1) top is fixedly installed and compresses upper cover (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610052115.4A CN105451494A (en) | 2016-01-26 | 2016-01-26 | Waterproof technology and device of fluid instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610052115.4A CN105451494A (en) | 2016-01-26 | 2016-01-26 | Waterproof technology and device of fluid instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105451494A true CN105451494A (en) | 2016-03-30 |
Family
ID=55561145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610052115.4A Pending CN105451494A (en) | 2016-01-26 | 2016-01-26 | Waterproof technology and device of fluid instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105451494A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108575068A (en) * | 2017-03-13 | 2018-09-25 | 宁德时代新能源科技股份有限公司 | battery control unit encapsulating structure and encapsulating method |
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| CN101568241A (en) * | 2008-04-25 | 2009-10-28 | 纬创资通股份有限公司 | Waterproof case |
| CN101566696A (en) * | 2008-04-22 | 2009-10-28 | 深圳富泰宏精密工业有限公司 | Display screen component |
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2016
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101566696A (en) * | 2008-04-22 | 2009-10-28 | 深圳富泰宏精密工业有限公司 | Display screen component |
| CN101568241A (en) * | 2008-04-25 | 2009-10-28 | 纬创资通股份有限公司 | Waterproof case |
| CN201207417Y (en) * | 2008-04-28 | 2009-03-11 | 东莞盛世科技电子实业有限公司 | Intelligent multifunctional display charger |
| CN202168305U (en) * | 2011-07-21 | 2012-03-14 | 深圳市华明力科技有限公司 | Display screen waterproof housing and display screen with same |
| CN202435762U (en) * | 2011-12-19 | 2012-09-12 | 青岛天迅电气有限公司 | Intrinsically-safe operation box for mine |
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| CN104849892A (en) * | 2014-02-17 | 2015-08-19 | 鸿富锦精密工业(武汉)有限公司 | Display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108575068A (en) * | 2017-03-13 | 2018-09-25 | 宁德时代新能源科技股份有限公司 | battery control unit encapsulating structure and encapsulating method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |
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| RJ01 | Rejection of invention patent application after publication |