CN111278247B

CN111278247B - Waterproof shell of water quantity control equipment, preparation method and water quantity control equipment

Info

Publication number: CN111278247B
Application number: CN202010070834.5A
Authority: CN
Inventors: 唐晓冬; 张捷
Original assignee: Chengdu Duocai Renyimen Technology Co ltd
Current assignee: Chengdu Duocai Renyimen Technology Co ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2021-04-13
Anticipated expiration: 2040-01-21
Also published as: CN111278247A

Abstract

The invention relates to a waterproof shell of water quantity control equipment, a preparation method and the water quantity control equipment, belonging to the field of the water quantity control equipment. This water yield controlgear's waterproof shell includes: the lower shell is internally provided with a partition plate, and the partition plate divides the internal space of the lower shell into a first placing cavity and a second placing cavity; the PCB circuit board is secondarily injected into the lower shell, a first electrical connecting sheet is arranged on the surface of one end of the PCB circuit board and exposed in the first placing cavity, a second electrical connecting sheet is arranged on the surface of the other end of the PCB circuit board and exposed in the second placing cavity; the first upper shell is covered on the first placing cavity; and the second upper shell is covered on the second placing cavity. This water control equipment's waterproof shell can solve the current not good problem of water control equipment waterproof performance, improves water control equipment's life.

Description

Waterproof shell of water quantity control equipment, preparation method and water quantity control equipment

Technical Field

The invention belongs to the field of water quantity control equipment, and particularly relates to a waterproof shell of water quantity control equipment, a preparation method of the waterproof shell and the water quantity control equipment.

Background

The water quantity control device is a device which utilizes the modern sensing technology and the intelligent IC card technology to count the water quantity and settle the transaction through data transmission and control the connection or disconnection of water consumption. Electronic equipment such as a circuit board, a chip and the like are arranged in the water quantity control equipment, so that the requirement on the waterproof performance of the water quantity control equipment is higher.

Present water flow control equipment is through arranging electronic equipment such as circuit board and chip in the casing, it is sealed that the rethread is filled in AB glue, make circuit board and chip can not contact water, but it is sealed through AB glue solidification, waterproof performance is relatively poor, it cracks to appear easily after using a period, thereby lead to circuit board and chip to receive the infiltration of water, thereby the chip is impaired, lead to whole water flow control equipment to damage, thereby water flow control equipment's life is very short, the pouring sealant internal stress that AB glue sealed mode formed is great simultaneously, can influence electronic component's stability.

Disclosure of Invention

The invention provides a waterproof shell of water quantity control equipment, a preparation method and the water quantity control equipment for solving the technical problems, and can solve the problem that the existing water quantity control equipment is poor in waterproof performance and prolong the service life of the water quantity control equipment.

The technical scheme for solving the technical problems is as follows: a water resistant housing for a water control device comprising:

the electric wire placing device comprises a lower shell, a first positioning device and a second positioning device, wherein the top end of the lower shell is open, a partition plate is arranged in the lower shell, the partition plate divides the inner space of the lower shell into a first placing cavity and a second placing cavity, and the first placing cavity is provided with an electric wire passing hole for passing an electric wire;

the PCB circuit board is subjected to secondary injection molding in the lower shell, a first electrical connecting sheet is arranged on the surface of one end of the PCB circuit board and exposed in the first placing cavity, a second electrical connecting sheet is arranged on the surface of the other end of the PCB circuit board and exposed in the second placing cavity;

the first upper shell is covered on the first placing cavity and seals the first placing cavity, and the first upper shell is detachably connected with the lower shell;

and the second upper shell is covered on the second placing cavity and is sealed, and the second placing cavity is detachably connected with the second upper shell.

The invention has the beneficial effects that: the lower shell is divided into a first placing cavity and a second placing cavity by the arranged separation plate, the first placing cavity and the second placing cavity are respectively sealed by the first upper shell and the second upper shell, so that electronic equipment such as water passing parts and chips are respectively placed in two separated spaces, the electronic equipment is prevented from being soaked under the condition that the water passing parts are damaged and leak water due to overlarge internal pressure of the water passing parts, the first placing cavity and the second placing cavity are electrically communicated by the PCB, the separation plate is not required to be provided with holes and sealed by sealant, meanwhile, the PCB is formed by secondary injection molding, no gap exists between the PCB and the lower shell as well as between the PCB and the separation plate, water in the second placing cavity can not enter the first placing cavity, and the first placing cavity is kept in a dry state, thereby electronic equipment such as chip obtains effective protection, has solved current adoption sealed gluey back of gluing, the problem that the waterproof effect is influenced to the fracture appears for this waterproof case's life is longer, and water-proof effects is better.

On the basis of the technical scheme, the invention can be further improved as follows.

Further, still include the top cap, the top cap lid is established on first last casing with the casing is gone up to the second, the top cap with first last casing with the casing is gone up to the second can dismantle the connection.

The beneficial effect of adopting the further scheme is that: cover first last casing and second through the top cap to make waterproof housing more pleasing to the eye, can not observe the gap of casing concatenation on first last casing and the second.

Furthermore, a second windowing part is arranged on the second upper shell, transparent plastic is placed at the second windowing part through secondary injection molding, a first windowing part is arranged at the position corresponding to the top cover, and the transparent plastic is exposed out of the top cover through the first windowing part.

The beneficial effect of adopting the further scheme is that: the content on the LCD display screen that the intracavity was placed can be placed to the show second through transparent plastic, wherein transparent plastic adopts the secondary to mould plastics and imbeds on the second on the casing for there can not be the gap between the casing on transparent plastic and the second yet, thereby avoid water to enter into the second from transparent plastic and place the chamber, can further improve waterproof performance, make this waterproof housing's water-proof effects better.

Further, still be equipped with a plurality of first key holes on the casing on the second, be equipped with on the top cap with a plurality of second key holes that first key hole corresponds, be equipped with rubber keyboard in the second upper casing, the roof of casing is equipped with ring groove on the second, the outside protrusion in ring edge of rubber keyboard has annular card strip, annular card strip is arranged in the ring groove, rubber keyboard passes through locking Assembly and installs on the shells inner wall on the second, be equipped with a plurality of buttons on the rubber keyboard, it is a plurality of the button is with a plurality of first key hole and a plurality of second key hole one-to-one, it is a plurality of the button is through corresponding first key hole with the second is worn out the top cap according to the key hole.

The beneficial effect of adopting the further scheme is that: improve equipment's waterproof ability under the condition that can remain human-computer interaction keyboard through the rubber keyboard that sets up, simultaneously through setting up annular card strip and ring groove for can not produce the gap between the interior roof of casing on rubber keyboard and the second, avoid water to enter into the second from rubber keyboard and place the chamber.

Further, the locking subassembly includes annular fastening seat, a plurality of locking screw thread seat and a plurality of locking screw, and is a plurality of locking screw thread seat fixed connection is in on the interior roof of casing on the second, be equipped with a plurality of locking screw holes on the side of annular fastening seat, it is a plurality of locking screw hole and a plurality of locking screw thread seat one-to-one, annular fastening seat is through a plurality of locking screw is with a plurality of locking screw thread seat and a plurality of locking screw hole screw-thread fit will rubber keyboard locking is in on the second the interior roof of casing on the second.

The beneficial effect of adopting the further scheme is that: the rubber keyboard is extruded through the annular fastening seat, so that the rubber keyboard can be in close contact with the inner top wall of the second upper shell, and the waterproof effect is better.

Furthermore, a first notch used for placing a water pipe is arranged on the side wall of the first placing cavity, a second notch matched with the first notch is arranged on the first upper shell, and the first notch and the second notch are spliced into a circle.

The beneficial effect of adopting the further scheme is that: make the first water passing part of putting into in placing the chamber can stretch out the first chamber of placing through first breach and second breach, application range is wider.

Furthermore, a first annular groove is formed in the annular edge of the cavity opening of the first placing cavity, a first waterproof rubber ring is placed in the first annular groove, a first annular extrusion strip which extends outwards and is matched with the first annular groove is arranged at the bottom end of the first upper shell, and when the first upper shell covers the first placing cavity, the first annular extrusion strip is placed in the first annular groove; the chamber mouth ring limit department that the chamber was placed to the second is equipped with second annular groove, the waterproof rubber ring of second has been placed in the second annular groove, the bottom of casing be equipped with outside extension on the second with the second annular extrusion strip of second annular groove looks adaptation, casing lid is in on the second when placing on the chamber, second annular extrusion strip is arranged in the second annular groove.

The beneficial effect of adopting the further scheme is that: through first waterproof rubber ring and the waterproof rubber ring of second can improve first casing and the second on the casing and the leakproofness between the casing down for waterproof performance is better.

Furthermore, be equipped with a plurality of openings that are used for increasing area of contact and reduce the circuit board and block the plastic on the PCB circuit board.

The beneficial effect of adopting the further scheme is that: the opening is opened to the PCB circuit board and has reduced the PCB circuit board to the area of blocking of moulding plastics. The blocked plastic upper and lower surfaces are connected into a whole through the through hole, so that the area of the PCB circuit board which is not fused with the plastic is greatly reduced, and the wrapping performance of the plastic on the PCB circuit board is improved; in addition, the cracking of the joint of the PCB circuit board and the plastic cement when the plastic cement expands with heat and contracts with cold or the internal pressure changes in temperature change can be prevented, so that the waterproof failure is caused, and the waterproof performance of the PCB circuit board for secondary injection molding is greatly improved.

Furthermore, a plurality of positioning holes are formed in the PCB, the positioning holes are of an inscribed circular flower-shaped structure, and the PCB is made of an RF4 glass fiber material.

The beneficial effect of adopting the further scheme is that: the internal structure of the RF4 glass fiber material has fluffy characteristic, so that the adhesion of plastic to a PCB circuit board is better when the glass fiber material is used for secondary injection molding;

the PCB circuit board can be conveniently fixed at a better position during secondary injection molding through the positioning hole, and the success rate of secondary injection molding is improved;

through the design of inscribed circle, reduce the mould design degree of difficulty, reduce cost, the area of contact of flower shape design for increase PCB circuit board and plastic, the design of flower shape can improve the parcel and the adhesive force of plastic to the PCB circuit board greatly simultaneously, further improves waterproof ability.

The invention also provides water quantity control equipment, which comprises the waterproof shell of the water quantity control equipment.

The water quantity control equipment has the beneficial effects that: the water quantity control equipment has good waterproof performance and long service life.

The invention also provides a preparation method of the waterproof shell of the water quantity control equipment, which comprises the following steps:

s1, preprocessing a PCB (printed Circuit Board): removing the copper layer and the solder mask layer outside the first electrical connection sheet and the second electrical connection sheet which cover the PCB circuit board to obtain a processed PCB circuit board;

s2, preparing a lower shell: taking a plastic raw material, adding the plastic raw material into an injection molding machine, taking the processed PCB circuit board obtained in the step S1, putting the processed PCB circuit board into a lower shell mold, and performing injection molding to obtain a lower shell;

s3, preparing a first upper shell: taking a plastic raw material, adding the plastic raw material into an injection molding machine, injecting the plastic raw material in the injection molding machine into a first upper shell mold, and performing injection molding to obtain a first upper shell;

s4, preparing a second upper shell: taking a plastic raw material, adding the plastic raw material into an injection molding machine, injecting the plastic raw material in the injection molding machine into a second upper shell mold, and performing injection molding to obtain a second upper shell;

and S5, splicing and assembling the first upper shell prepared in the step S3, the second upper shell prepared in the step S4 and the lower shell prepared in the step S2 to obtain the waterproof shell of the water quantity control device.

The preparation method has the beneficial effects that: the waterproof shell of the water control equipment prepared by the preparation method can firmly fix the PCB on the lower shell, and the waterproof shell of the water control equipment formed by injection molding and splicing has the advantages of high quality, low cost and contribution to popularization and use.

Drawings

FIG. 1 is a perspective view of a waterproof housing of the present invention;

FIG. 2 is an exploded view of the waterproof enclosure of the present invention;

FIG. 3 is a perspective view of the lower housing of the present invention;

FIG. 4 is a top view of the lower housing of the present invention;

FIG. 5 is a bottom view of the first upper housing of the present invention;

FIG. 6 is a bottom view of one aspect of a second upper housing of the present invention;

FIG. 7 is a bottom view of another aspect of the second upper housing of the present invention;

FIG. 8 is a perspective view of a rubber keyboard according to the present invention;

FIG. 9 is a perspective view of the annular fastening seat of the present invention;

FIG. 10 is a schematic diagram of a PCB circuit board according to the present invention;

FIG. 11 is a perspective view of the water control apparatus of the present invention;

fig. 12 is a schematic view of the internal structure of the water control apparatus of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a top cover; 2. a first upper case; 3. a second upper case; 4. a lower housing; 5. a mounting seat; 6. installing a threaded hole; 7. a first notch; 8. a second notch; 9. a first key hole; 10. a rubber keyboard; 11. a first windowing; 12. transparent plastic; 13. second windowing; 14. a second key hole; 15. the electric wire penetrates into the hole; 16. installing a screw rod; 17. an annular fastening seat; 18. a first waterproof rubber ring; 19. a gasket; 20. a second waterproof rubber ring; 21. a PCB circuit board; 22. a first placing cavity; 23. a second placing cavity; 24. a first annular groove; 25. a second annular groove; 26. a pressure relief gap; 27. a first annular extrusion strip; 28. locking the threaded hole; 29. locking the threaded seat; 30. a second annular extrusion strip; 31. an electromagnetic valve; 32. a port; 33. positioning holes; 34. a first electrical connection sheet; 35. a second electrical connection sheet; 36. a water connection head; 37. a flow meter; 38. a water pipe.

Detailed Description

The present invention is described in further detail below by way of specific examples and comparative examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

It is to be noted that "comprising" in the present invention means that it may include other components in addition to the components described, and the "comprising" may be replaced with "being" or "consisting of … …" in a closed manner.

Examples

As shown in fig. 1 to 10, the present embodiment provides a waterproof case of a water amount control apparatus, including: a lower case 4, a PCB circuit board 21, a first upper case 2 and a second upper case 3.

Casing 4 is the rectangle down, casing 4 level sets up down, casing 4 is uncovered on the top, thereby it puts the object space to have in the casing 4 down, be equipped with the division board down in the casing 4, the division board will be divided into down casing 4 inner space and first place chamber 22 and the chamber 23 is placed to the second, wherein the division board is located casing 4's middle part down, division board and casing 4 integrated into one piece down, wherein first place chamber 22 and be used for placing water yield part, the second is placed chamber 23 and is used for placing electronic equipment such as chip, make electronic equipment and water yield part separately in two different cavities, thereby avoid the water and the electronic equipment contact in the water yield part, first place chamber 22 and be equipped with the electric wire that is used for the electric wire to pass and wear hole 15, wherein electric wire wears hole 15 and is used for penetrating the power supply line, wherein electric wire wears hole 15 and adopts sealed.

The PCB circuit board 21 is injection-molded in the lower shell 4 for the second time, so that the PCB circuit board 21 is embedded in the lower shell 4, the surface of one end of the PCB circuit board 21 is provided with a first electrical connecting sheet 34, the first electrical connecting sheet 34 is exposed in the first placing cavity 22, the surface of the other end of the PCB circuit board 21 is provided with a second electrical connecting sheet 35, the second electrical connecting sheet 35 is exposed in the second placing cavity 23, so that the first placing cavity 22 and the second placing cavity 23 can be electrically communicated through the first electrical connecting sheet 34 and the second electrical connecting sheet 35 on the PCB circuit board 21, wherein the PCB circuit board 21 is positioned below the partition plate, and the partition plate increases the strength of the PCB circuit board 21 fixed in the lower shell 4. The first upper shell 2 is covered on the first placing cavity 22 and seals the first placing cavity 22, the first upper shell 2 is detachably connected with the lower shell 4 through bolts, wherein a plurality of first connecting threaded holes are formed in the annular edge of a cavity opening of the first placing cavity 22, a plurality of second connecting threaded holes corresponding to the first connecting threaded holes are formed in the first upper shell 2, and therefore the bolts are turned into the first connecting threaded holes and the second threaded holes to connect the first upper shell 2 to the lower shell 4; 3 lids of casing are established on the second places chamber 23 on the second to seal the second and place chamber 23, casing 3 passes through the bolt detachable connection on the second with lower casing 4, wherein the second is placed and is equipped with a plurality of third connecting thread holes on the accent ring edge in chamber 23, is equipped with a plurality of fourth connecting thread holes corresponding with third connecting thread hole on casing 3 on the second, thereby changes over to third connecting thread hole and fourth screw hole with the bolt and connects casing 3 on the second on casing 4 down. Wherein the first upper case 2 and the second upper case 3 are adapted, and the first upper case 2 and the second upper case 3 completely cover the lower case 4 by connecting the first upper case 2 and the second upper case 3 to the lower case 4, respectively.

Preferably, the waterproof shell further comprises a top cover 1, the top cover 1 covers the first upper shell 2 and the second upper shell 3, the first upper shell 2 and the second upper shell 3 are covered by the top cover 1, the waterproof shell is more attractive, the top cover 1 is detachably connected with the first upper shell 2 and the second upper shell 3 through buckles, and the top cover 1 can be conveniently mounted on the first upper shell 2 and the second upper shell 3.

Preferably, the second upper housing 3 is provided with the second window 13 in this embodiment, transparent plastic 12 is placed at the second window 13 through secondary injection molding, so that the transparent plastic 12 is embedded at the inner top wall of the second upper housing 3, the second window 13 is sealed through the transparent plastic 12, the content on the LCD display screen placed in the second placing cavity 23 can be displayed through the transparent plastic 12, the top cover 1 is provided with the first window 11 at the corresponding position, the transparent plastic 12 is exposed out of the top cover 1 through the first window 11, and the content on the LCD display screen placed in the second placing cavity 23 can be displayed through the first window 11 and the transparent plastic 12. Wherein the transparent plastic 12, the second fenestration 13 and the first fenestration 11 are all rectangular.

Preferably, in this embodiment, the second upper case 3 is further provided with a plurality of first key holes 9, the plurality of first key holes 9 are arranged in an array, the top cover 1 is provided with a plurality of second key holes 14 corresponding to the plurality of first key holes 9, the plurality of second key holes 14 are also arranged in an array, wherein the first key holes 9 correspond to the second key holes 14 one by one, the second upper case 3 is provided with the rubber keyboard 10, the rubber keyboard 10 is mounted on the inner wall of the second upper case 3 through a locking component, the top wall of the second upper case 3 is provided with an annular clamping groove, an annular clamping strip protrudes outwards from the annular edge of the rubber keyboard 10, the sealing performance can be improved by placing the annular clamping strip in the annular clamping groove, water is prevented from entering the second placing cavity 23 from a gap between the rubber keyboard 10 and the second upper case 3, the rubber keyboard 10 is provided with a plurality of keys protruding outwards, the plurality of keys correspond to the plurality of first key holes 9 and the plurality of second key holes 14 one by one, the plurality of keys pass out of the top cover 1 through the corresponding first key holes 9 and second key holes 14. The rubber keyboard 10 is matched with the existing digital key circuit board, and the digital keys of the circuit board can be pressed through the rubber keyboard 10. The waterproof capability of the equipment can be improved under the condition that the man-machine interaction keyboard is reserved through the arranged rubber keyboard 10.

Preferably, the locking assembly in this embodiment includes annular fastening seat 17, a plurality of locking screw seats 29 and a plurality of locking screws, a plurality of locking screw seats 29 are fixedly connected on the interior roof of casing 3 on the second, a plurality of locking screw seats 29 interval distribution is in four sides of a plurality of first key holes 9, be equipped with a plurality of locking screw holes 28 on the four sides of annular fastening seat 17, a plurality of locking screw holes 28 and a plurality of locking screw seats 29 one-to-one, annular fastening seat 17 is through with a plurality of locking screws with a plurality of locking screw seats 29 and a plurality of locking screw holes 28 screw-thread fit, thereby lock rubber keyboard 10 on the interior roof of casing 3 on the second, make rubber keyboard 10 and the interior roof in close contact with of casing 3 on the second, annular clamping strip is stuffed in annular clamping groove simultaneously, avoid appearing leaking the gap.

Preferably, in this embodiment, a first notch 7 for placing the water pipe 38 is disposed on the sidewall of the first placing cavity 22, a second notch 8 adapted to the first notch 7 is disposed on the first upper casing 2, the first notch 7 and the second notch 8 are spliced into a circle, and the water pipe 38 is clamped and fixed by the first notch 7 and the second notch 8.

Preferably, the first accent of placing chamber 22 in this embodiment encircles the limit department and is equipped with first annular groove 24, place first waterproof rubber ring 18 in first annular groove 24, the bottom of first casing 2 is equipped with the first annular extrusion strip 27 of outside extension and first annular groove 24 looks adaptation, when first casing 2 lid is placed on first chamber 22, first annular extrusion strip 27 is placed in first annular groove 24, thereby first annular extrusion strip 27 extrudes first waterproof rubber ring 18 to the tank bottom of first annular groove 24, make and can not produce the gap of leaking between first casing 2 and the lower casing 4, improve this waterproof case's leakproofness. The chamber mouth ring limit department that the chamber 23 was placed to the second is equipped with second annular groove 25, the waterproof rubber ring of second 20 has been placed in the second annular groove 25, the bottom of casing 3 is equipped with the second annular extrusion strip 30 of outside extension and second annular groove 25 looks adaptation on the second, 3 lids of casing are in the second place the chamber 23 on the time, second annular extrusion strip 30 is arranged in second annular groove 25, thereby the waterproof rubber ring of second 20 tank bottoms to second annular groove 25 of second annular extrusion strip 30 extrusion, make on the second casing 3 and down can not produce the gap of leaking between the casing 4, improve this waterproof case's leakproofness. Wherein the first waterproof rubber ring 18 and the second waterproof rubber ring 20 are both made of rubber.

Preferably, in this embodiment, the first notch 7 is provided with a first gasket 19 groove for placing the gasket 19, the second notch 8 is provided with a second gasket 19 groove for placing the gasket 19, wherein the first waterproof rubber ring 18 is provided with two gaskets 19 for being sleeved on the water pipe 38, when in use, the gasket 19 is sleeved on the water pipe 38, when the first upper housing 2 covers the first placing cavity 22, the gasket 19 is placed in the first gasket 19 groove and the second gasket 19 groove to improve sealing, and the water pipe 38 is clamped by splicing the first notch 7 and the second notch 8.

Preferably, be equipped with a plurality of through openings 32 that are used for increasing area of contact on PCB circuit board 21 in this embodiment, the lateral wall contact of plastic and PCB circuit board 21 when can be convenient for the secondary to mould plastics through a plurality of through openings 32 to PCB circuit board 21 imbeds more firmly in casing 4 down, can not produce the gap between PCB circuit board 21 and the casing 4 down simultaneously, can avoid appearing the condition of leaking. Wherein the through openings 32 are strip-shaped, and the through openings 32 are arranged in an array, so that the fixing effect is better. The opening 32 of the PCB 21 reduces the blocking area of the PCB 21 to the injection molding plastic. The blocked plastic upper and lower surfaces are connected into a whole through the through hole 32, so that the area of the PCB circuit board 21 which is not melted with the plastic is greatly reduced, and the wrapping performance of the plastic on the PCB circuit board 21 is improved; in addition, the cracking of the joint of the PCB circuit board 21 and the plastic can be prevented when the temperature changes are caused by expansion with heat and contraction with cold or the internal pressure changes, so that the waterproof failure is caused, and the waterproof performance of the PCB circuit board 21 used for secondary injection molding is greatly improved.

Preferably, in this embodiment, the PCB 21 is provided with a plurality of positioning holes 33, the positioning holes 33 are in an inscribed circular flower shape, and the PCB 21 is made of RF4 glass fiber material. The internal structure of the RF4 glass fiber material has fluffy characteristic, and the plastic has better adhesion to the PCB 21 when used for secondary injection molding. The positioning holes 33 can facilitate the PCB 21 to be fixed at a better position during secondary injection molding, and the success rate of secondary injection molding is improved. Through the design reduction mould design degree of difficulty of inscribed circle, reduce cost, the area of contact of flower shape design for increase PCB circuit board 21 and plastic, the design of flower shape can improve the plastic greatly and to PCB circuit board 21's parcel and adhesive force simultaneously, further improves waterproof ability.

Preferably, the partition plate in the embodiment is further provided with a pressure release gap 26, so that pressure can be conveniently released during secondary injection molding, and the sealing and waterproof effects are prevented from being affected by cracks.

Preferably, in the present embodiment, a plurality of mounting screws 16 are disposed in the second placing cavity 23, and the electronic device is conveniently mounted by the plurality of mounting screws 16.

Preferably, still be equipped with two mount pads 5 on the lateral wall of lower casing 4, be equipped with two mounting screw holes 6 on the mount pad 5, can conveniently install waterproof housing in the place that needs to use through mounting screw hole 6.

The waterproof principle of this waterproof shell is: the lower shell is divided into a first placing cavity and a second placing cavity by the arranged partition board, and the first placing cavity and the second placing cavity are respectively sealed by the first upper shell and the second upper shell, so that electronic equipment such as a water passing part and a chip are respectively placed in two separated spaces, the electronic equipment is prevented from being soaked under the condition that the water passing part is damaged and leaks due to overlarge internal pressure of the water passing part, the first placing cavity and the second placing cavity can be electrically communicated by the PCB circuit board, the connection by using articles such as electric wires is not needed, holes are not needed on the partition board, and the sealing by using a sealant is not needed, so that the permeation of water from gaps of the electric wires is avoided, the water intercommunication in the first placing cavity and the second placing cavity is avoided, the waterproof performance of the whole shell is improved, meanwhile, the PCB circuit board is formed by secondary injection molding, and the PCB circuit board and the lower shell are integrated, there can not be the gap between PCB circuit board and lower casing and the division board, and simultaneously, PCB circuit board 21 sets up opening 32 and has reduced PCB circuit board 21 to the area of blocking of moulding plastics. The blocked plastic upper and lower surfaces are connected into a whole through the through hole 32, so that the area of the PCB 21 which is not melted with the plastic is greatly reduced, the wrapping performance of the plastic on the PCB 21 is improved, and the connection strength between the PCB 21 and the lower shell is higher; in addition, the waterproof failure caused by the cracking of the connection part between the PCB circuit board 21 and the plastic when the temperature changes due to the expansion and contraction of the plastic or the change of the internal pressure can be prevented, thereby greatly improving the waterproof performance of the PCB 21 for secondary injection molding, preventing water in the second placing cavity from entering the first placing cavity, keeping the first placing cavity in a dry state, therefore, the shell has very good waterproof performance, so that electronic equipment such as chips and the like are effectively protected, the problems that after the existing shell is sealed by adopting a sealant, the waterproof effect is affected by cracking, so that the service life of the waterproof shell is longer, the waterproof effect is better, meanwhile, the secondary injection molding of transparent plastic is further arranged, and the sealing effect of the rubber keyboard on the transparent plastic is achieved, so that the water seepage problem of gaps at the transparent plastic is solved, and the waterproof effect of the whole shell is better.

As shown in fig. 11-12, the present embodiment also provides a water quantity control device, comprising the waterproof housing of the water quantity control device as described above; the water quantity control equipment further comprises an electromagnetic valve 31, a water pipe 38, two water connectors 36, a flowmeter 37, a chip and a digital key circuit board, the electromagnetic valve 31 is communicated with the water pipe 38, the water pipe 38 can be opened or closed through the electromagnetic valve 31, the flowmeter 37 is communicated with the water pipe 38, the flow of the water pipe 38 is counted through the flowmeter 37, the two water connectors 36 are respectively connected to two ends of the water pipe 38 and are used for being connected with an external pipeline, the first water pipe 38, the electromagnetic valve 31 and the flowmeter 37 are placed in the first placing cavity 22, two ends of the water pipe 38 penetrate through the lower shell 4 and the first upper shell 2 through the first notch 7 and the second notch 8, and the two water connectors 36 are located outside the lower shell 4. The chip and the number key circuit board are located in the second placing cavity 23, wherein the electromagnetic valve 31 and the flowmeter 37 are electrically communicated with one end of the PCB circuit board 21 through the first electrode connector, and the chip is electrically communicated with the other end of the PCB circuit board 21 through the second electrode connector, so that the chip can control the electromagnetic valve 31 to be opened or closed, and the data of the flowmeter 37 can be transmitted to the chip.

The embodiment also provides a preparation method of the waterproof shell of the water quantity control device, which comprises the following steps:

s1, preprocessing the PCB 21: and removing the copper layer and the solder mask layer outside the first electrical connection sheet and the second electrical connection sheet which cover the PCB circuit board 21 to obtain the processed PCB circuit board. The adhesion of the plastic to the PCB circuit board 21 is reduced during the secondary injection molding of the copper-clad and solder resist layers on the PCB circuit board 21 in a smooth manner, and the waterproof performance is not easy; on the contrary, the spot-removing solder mask layer and the copper-coated back surface are made of glass fiber materials, and the adhesion of the plastic to the PCB 21 during secondary injection molding is better.

S2, preparing the lower case 4: taking a plastic raw material, adding the plastic raw material into an injection molding machine, taking the processed PCB circuit board obtained in the step S1, putting the processed PCB circuit board into a placing groove in a lower shell mold, and performing injection molding to fix the processed PCB circuit board in the placing groove and form a separation plate during injection molding, wherein the separation plate is positioned above the processed PCB circuit board and fixes the processed PCB circuit board to obtain a lower shell 4.

S3, preparing the first upper case 2: taking plastic raw materials, adding the plastic raw materials into an injection molding machine, injecting the plastic raw materials in the injection molding machine into a first upper shell mold, and performing injection molding to obtain a first upper shell 2.

S401, preparing a second upper shell basic body: and (3) taking a plastic raw material, adding the plastic raw material into an injection molding machine, injecting the plastic raw material in the injection molding machine into a second upper shell basic body mold, and performing injection molding to obtain a second upper shell basic body, wherein the transparent plastic 12 is not fixed on the second upper shell basic body.

S402, placing the second upper shell basic body prepared in the step S301 into a second upper shell mold, placing the transparent plastic 12 into the second upper shell mold, and embedding the transparent plastic 12 into the second windowing part 13 through secondary injection molding; and then the soft rubber keyboard and the annular fastening seat 17 are taken, and the soft rubber keyboard is fixedly locked through the annular fastening seat 17, so that the second upper shell 3 is obtained.

S5, taking the lower shell 4 prepared in the step S2, taking the first waterproof rubber ring 18 and placing the first waterproof rubber ring into the first annular groove 24, taking the second waterproof rubber ring 20 and placing the second waterproof rubber ring into the second annular groove 25, covering the first upper shell 2 prepared in the step S3 and the second upper shell 3 prepared in the step S402 on the lower shell 5 respectively, and splicing, assembling and fixing the upper shells through bolts to obtain the waterproof shell of the water quantity control device.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A water resistant housing for a water control apparatus comprising:

the wire inserting device comprises a lower shell (4), wherein the top end of the lower shell (4) is open, a partition plate is arranged in the lower shell (4), the partition plate divides the inner space of the lower shell (4) into a first placing cavity (22) and a second placing cavity (23), and the first placing cavity (22) is provided with a wire inserting hole (15) for an electric wire to pass through;

the PCB circuit board (21) is subjected to secondary injection molding in the lower shell (4), a first electrical connecting sheet (34) is arranged on the surface of one end of the PCB circuit board (21), the first electrical connecting sheet (34) is exposed in the first placing cavity (22), a second electrical connecting sheet (35) is arranged on the surface of the other end of the PCB circuit board (21), and the second electrical connecting sheet (35) is exposed in the second placing cavity (23);

the first upper shell (2) is covered on the first placing cavity (22) and seals the first placing cavity (22), and the first upper shell (2) is detachably connected with the lower shell (4);

and the second upper shell (3) is covered on the second placing cavity (23) and is sealed, and the second placing cavity (23) is sealed, and the second upper shell (3) is detachably connected with the lower shell (4).

2. The waterproof housing of water quantity control equipment according to claim 1, characterized in that it further comprises a top cover (1), said top cover (1) is covered on said first upper shell (2) and said second upper shell (3), said top cover (1) is detachably connected with said first upper shell (2) and said second upper shell (3).

3. The waterproof casing of water quantity control equipment according to claim 2, characterized in that a second window (13) is arranged on the second upper shell (3), a transparent plastic (12) is placed at the second window (13) through secondary injection molding, a first window (11) is arranged at the corresponding position of the top cover (1), and the transparent plastic (12) is exposed out of the top cover (1) through the first window (11).

4. The waterproof casing of the water quantity control device according to claim 3, characterized in that the second upper casing (3) is further provided with a plurality of first key holes (9), the top cover (1) is provided with a plurality of second key holes (14) corresponding to the plurality of first key holes (9), the second upper casing (3) is internally provided with a rubber keyboard (10), the top wall of the second upper casing (3) is provided with an annular clamping groove, the annular edge of the rubber keyboard (10) protrudes outwards to form an annular clamping strip, the annular clamping strip is arranged in the annular clamping groove, the rubber keyboard (10) is installed on the inner wall of the second upper casing (3) through a locking component, the rubber keyboard (10) is provided with a plurality of keys, and the plurality of keys correspond to the plurality of first key holes (9) and the plurality of second key holes (14) one by one, the keys penetrate out of the top cover (1) through the corresponding first key holes (9) and the corresponding second key holes (14).

5. The waterproof case of water quantity control equipment according to claim 4, characterized in that the locking assembly comprises an annular fastening seat (17), a plurality of locking threaded seats (29) and a plurality of locking screws, the plurality of locking threaded seats (29) are fixedly connected to the inner top wall of the second upper shell (3), a plurality of locking threaded holes (28) are arranged on the side edge of the annular fastening seat (17), the plurality of locking threaded holes (28) correspond to the plurality of locking threaded seats (29) one by one, and the annular fastening seat (17) locks the rubber keyboard (10) on the inner top wall of the second upper shell (3) through the threaded fit of the plurality of locking screws and the plurality of locking threaded seats (29) and the plurality of locking threaded holes (28).

6. The waterproof shell of the water quantity control device according to the claim 1, characterized in that a first annular groove (24) is arranged at the annular edge of the mouth of the first placing cavity (22), a first waterproof rubber ring (18) is placed in the first annular groove (24), a first annular extrusion strip (27) which extends outwards and is matched with the first annular groove (24) is arranged at the bottom end of the first upper shell (2), and when the first upper shell (2) is covered on the first placing cavity (22), the first annular extrusion strip (27) is placed in the first annular groove (24); the accent ring limit department that chamber (23) were placed to the second is equipped with second annular groove (25), the waterproof rubber ring of second (20) have been placed in second annular groove (25), the bottom of casing (3) is equipped with outside extension on the second with second annular groove (25) looks adaptation's second annular extrusion strip (30), casing (3) lid is in on the second when placing chamber (23) on, second annular extrusion strip (30) are arranged in second annular groove (25).

7. Water proof housing for a water control device according to any of claims 1-6 characterized in that the PCB circuit board (21) is provided with a plurality of through openings (32) for increasing the contact area and reducing the blocking of the circuit board to plastic.

8. The waterproof case of water control device of claim 7, wherein the PCB circuit board (21) is provided with a plurality of positioning holes (33), the positioning holes (33) are of an inscribed circular flower structure, and the PCB circuit board (21) is made of RF4 glass fiber.

9. A water quantity control device comprising a water resistant housing of a water quantity control device as claimed in any one of claims 1 to 8.

10. A method of making a water resistant housing for a water control device as claimed in any one of claims 1 to 8, comprising the steps of:

s1, preprocessing a PCB (printed circuit board) (21): removing copper layers and solder masks outside the first electrical connection sheet and the second electrical connection sheet which cover the PCB circuit board (21) to obtain a processed PCB circuit board;

s2, preparing a lower shell (4): taking a plastic raw material, adding the plastic raw material into an injection molding machine, taking the processed PCB circuit board obtained in the step S1, putting the processed PCB circuit board into a lower shell mold, and performing injection molding to obtain a lower shell (4);

s3, preparing a first upper shell (2): taking a plastic raw material, adding the plastic raw material into an injection molding machine, injecting the plastic raw material in the injection molding machine into a first upper shell mold, and performing injection molding to obtain a first upper shell (2);

s4, preparing a second upper shell (3): taking a plastic raw material, adding the plastic raw material into an injection molding machine, injecting the plastic raw material in the injection molding machine into a second upper shell mold, and performing injection molding to obtain a second upper shell (3);

and S5, splicing and assembling the first upper shell (2) prepared in the step S3, the second upper shell (3) prepared in the step S4 and the lower shell (4) prepared in the step S2 to obtain the waterproof shell of the water quantity control device.