CN111822230B - Electronic water meter and glue filling method thereof - Google Patents
Electronic water meter and glue filling method thereof Download PDFInfo
- Publication number
- CN111822230B CN111822230B CN202010830567.7A CN202010830567A CN111822230B CN 111822230 B CN111822230 B CN 111822230B CN 202010830567 A CN202010830567 A CN 202010830567A CN 111822230 B CN111822230 B CN 111822230B
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- Prior art keywords
- glue
- protective cover
- main board
- cover
- glue filling
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- 239000003292 glue Substances 0.000 title claims abstract description 162
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims abstract description 111
- 238000004891 communication Methods 0.000 claims abstract description 79
- 239000000565 sealant Substances 0.000 claims abstract description 64
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims description 29
- 230000004888 barrier function Effects 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000000084 colloidal system Substances 0.000 abstract description 18
- 238000009434 installation Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 4
- 238000006424 Flood reaction Methods 0.000 description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RSZVKQDECFHDQJ-YDALLXLXSA-N methyl (2s)-2-(n-(2-methoxyacetyl)-2,6-dimethylanilino)propanoate;2-(trichloromethylsulfanyl)-3a,4,7,7a-tetrahydroisoindole-1,3-dione Chemical compound C1C=CCC2C(=O)N(SC(Cl)(Cl)Cl)C(=O)C21.COCC(=O)N([C@@H](C)C(=O)OC)C1=C(C)C=CC=C1C RSZVKQDECFHDQJ-YDALLXLXSA-N 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 239000004588 polyurethane sealant Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/002—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the work consisting of separate articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1007—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material
- B05C11/101—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material responsive to weight of a container for liquid or other fluent material; responsive to level of liquid or other fluent material in a container
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/14—Casings, e.g. of special material
Abstract
The invention provides an electronic water meter and a glue filling method of the electronic water meter, relates to the technical field of water meters, and is used for solving the technical problems that a display element, an infrared communication element and a photosensitive element of the electronic water meter are easy to damage by sealant and the glue filling efficiency is low. The electronic water meter comprises a glue filling shell, wherein a cover plate and a main plate are arranged in a glue filling cavity of the glue filling shell, a protective cover on the cover plate is buckled outside a display element, a photosensitive element and an infrared communication element which are arranged on the main plate, an integrally formed sealing colloid is filled between the main plate and the cover plate, between the main plate and the glue filling cavity, and a display area of the display element, a photosensitive area of the photosensitive element and a communication area of the infrared communication element are exposed outside the sealing colloid. The protective cover is blocked by the sealing colloid, and the functional area of the element is not covered by the sealing colloid, so that the functional area of the element is not contacted with the sealing colloid, and the element is not required to be shielded independently during glue filling, thereby improving glue filling efficiency.
Description
Technical Field
The invention relates to the technical field of water meters, in particular to an electronic water meter and a glue filling method of the electronic water meter.
Background
The electronic water meter is a new type of water meter which adopts the principle of electronic or electromagnetic induction to measure the water flow and transmit and settle the measured water flow. The electronic water meter comprises an ultrasonic water meter, an electromagnetic water meter, a Coriolis water meter, a jet flow water meter and the like. The electronic water meter has the advantages of no moving parts, high measurement precision, large measurement range, stability, reliability, low failure rate and convenient remote data communication, thereby being widely applied.
The electronic water meter comprises a shell, a measuring pipeline and various electronic components, wherein an installation cavity is formed in the shell, and the measuring pipeline and various electronic components for measuring water flow are arranged in the installation cavity. Each electronic component includes mainboard, display element, infrared communication element and photosensitive element, and display element, infrared communication element and photosensitive element all are connected with the mainboard electricity, and display element shows information such as the rivers flow that the measurement pipeline measured, and infrared communication element transmits the rivers flow to the user side, and photosensitive element can regard as the photoswitch of the circuit in the mainboard, the break-make of the circuit of control mainboard. Each electronic component needs to be subjected to waterproof and moistureproof treatment so as to ensure that the electronic component can work normally. After the display element, the infrared communication element and the photosensitive element are shielded, the main board provided with the elements is placed into a glue filling cavity, after the glue filling cavity is inverted, liquid sealant is filled into a glue filling opening, the main board is covered by the sealant and cannot be contacted with the shielded display element, the infrared communication element and the photosensitive element, and the main board is placed still for installation after the sealant is solidified.
However, the display element, the infrared communication element and the photosensitive element are required to be shielded before glue filling, the glue filling efficiency is low, and the elements are easy to be shielded and fail in the glue filling process, so that the sealant contacts the elements, and the elements are damaged and cannot work normally.
Disclosure of Invention
In view of the above problems, embodiments of the present invention provide an electronic water meter and a glue filling method for the electronic water meter, which avoid damage to a display element, an infrared communication element and a photosensitive element caused by sealant, and improve glue filling efficiency.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
in a first aspect, an embodiment of the present invention provides an electronic water meter, including a glue-pouring shell, wherein a glue-pouring cavity is provided in the glue-pouring shell, and a main board and a cover board are installed in the glue-pouring cavity; the first surface of the main board is provided with a display element, a photosensitive element and an infrared communication element; the cover plate comprises a protective cover, and the protective cover is buckled outside the display element, the photosensitive element and the infrared communication element; the sealing glue is filled between the cover plate and the glue filling cavity, between the cover plate and the main plate, and between the main plate and the glue filling cavity, and the display area of the display element, the photosensitive area of the photosensitive element and the communication area of the infrared communication element are exposed outside the sealing glue.
The electronic water meter provided by the embodiment of the invention has the following advantages:
in the electronic water meter provided by the embodiment of the invention, the cover plate and the main board are arranged in the glue filling cavity of the glue filling shell, the protective cover in the cover plate is buckled outside the display element, the photosensitive element and the infrared communication element on the first surface of the main board, and when glue is filled into the glue filling cavity, the protective cover is blocked by the sealing colloid, so that the display element, the photosensitive element and the infrared communication element are in a sealing state, and moisture and water proofing treatment is carried out on the display element, the photosensitive element and the infrared communication element; in addition, due to the existence of the protective cover, the sealing colloid only seals the nonfunctional area of the element, and the functional area is exposed in the protective cover and is not shielded by the sealing colloid, so that the functional area of the element can work normally, the element is not required to be shielded separately before glue filling, the preparation work before glue filling is reduced, and the glue filling efficiency is improved.
In the electronic water meter, the protection cover comprises a first protection cover buckled outside the display element, a second protection cover buckled outside the photosensitive element and a third protection cover buckled outside the infrared communication element.
In the electronic water meter, the first surface of the cover plate is further provided with a first glue overflow baffle, and the first glue overflow baffle is arranged around the second protective cover.
In the electronic water meter, the first surface of the cover plate is further provided with a second glue overflow baffle, and the second glue overflow baffle is arranged around the third protective cover.
In the electronic water meter, the electronic water meter further comprises an upper shell and a lower shell, wherein the upper shell and the lower shell are enclosed to form a mounting cavity for accommodating the glue pouring shell, and the glue pouring shell is connected with the lower shell; the upper shell is provided with a display hole corresponding to the first protective cover, a first light hole corresponding to the second protective cover and a second light hole corresponding to the third protective cover.
In the electronic water meter as described above, the upper housing is provided with a first light shielding plate located in the mounting cavity, the first light shielding plate is disposed around the first light hole, and the first light shielding plate is located between the second protective cover and the first glue overflow baffle; the upper shell is further provided with a second light shielding plate located in the mounting cavity, the second light shielding plate surrounds the second light holes, and the second light shielding plate is located between the third protective cover and the second glue overflow baffle.
In the electronic water meter, the photosensitive area of the photosensitive element and the communication area of the infrared communication element are protruded out of the glue filling cavity.
In the electronic water meter as described above, the first surface of the cover plate is further provided with a support plate, and the height of the support plate is higher than that of the first protective cover, the second protective cover and the third protective cover.
In the electronic water meter, one end of the main board is provided with the clearance groove, and the main board is also provided with the first through hole; a limiting column is arranged in the glue filling cavity in a region corresponding to the avoidance groove, the limiting column is a stepped column, the step surface of the stepped column faces the main board, a first fixing column is arranged in the glue filling cavity in a region corresponding to the first through hole, and a first internal thread is arranged on the first fixing column; the main board is placed on the step surface and the end face of the first fixing column, the limiting column is located in the avoidance groove of the main board, and the main board and the glue pouring shell are fixed by a first screw penetrating through the first through hole and being in threaded connection with the first internal thread.
In the electronic water meter, a second fixing column is further arranged in the glue filling cavity, and the second fixing column is provided with a second internal thread; the one end of apron is provided with the extension, the extension is provided with the second through-hole, the other end of apron is provided with the limiting plate, the limiting plate is provided with the counter bore, the counter bore lid is located on the spacing post, the apron with glue-pouring shell is fixed by passing through the second through-hole and threaded connection is in the second screw in the second internal thread.
In a second aspect, an embodiment of the present invention further provides a glue filling method of an electronic water meter, including:
installing a main board into a glue filling cavity of a glue filling shell from the top opening of the glue filling shell; installing a cover plate on the main board from the top opening, wherein a first protective cover on the cover plate is buckled outside a display element on the main board, a second protective cover on the cover plate is buckled outside a photosensitive element on the main board, and a third protective cover on the cover plate is buckled outside an infrared communication element on the main board; and filling liquid sealant into the sealant filling cavity from the top opening, wherein the liquid level of the sealant submerges part of the cover plate, and the display area of the display element, the photosensitive area of the photosensitive element and the communication area of the infrared communication element are positioned above the liquid level of the sealant.
The glue filling method of the electronic water meter provided by the embodiment of the invention has the following advantages:
in the glue filling method of the electronic water meter, a main board is installed in a glue filling cavity from the top opening of a glue filling shell; the cover plate is arranged on the main board from the top opening, and the first protective cover, the second protective cover and the third protective cover on the cover plate are respectively buckled outside the display element, the photosensitive element and the infrared communication element on the main board; and filling liquid sealant into the sealant filling cavity from the top opening, wherein the liquid level of the sealant submerges part of the cover plate and is arranged below the display area of the display element, the photosensitive area of the photosensitive element and the communication area of the infrared communication element. Through the liquid level of liquid sealant when the control is irritated glues for its cladding mainboard, shutoff above-mentioned cover body and not submerge the functional area of above-mentioned component, make above-mentioned component can not receive the sealant to destroy, guarantee that above-mentioned component can normally work, simultaneously, above-mentioned component need not to shelter from before the encapsulating, has improved the encapsulating efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the invention and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a side view of an electronic water meter in an embodiment of the invention;
fig. 2 is a schematic structural diagram of a glue-pouring shell according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a motherboard in an embodiment of the invention;
FIG. 4 is a schematic view of a cover plate according to an embodiment of the present invention;
FIG. 5 is a schematic view of a structure of an upper housing in one direction according to an embodiment of the present invention;
FIG. 6 is a schematic view of another direction of the upper housing in an embodiment of the present invention;
FIG. 7 is a schematic diagram showing the position of a sealant according to an embodiment of the present invention;
fig. 8 is a flowchart of a glue filling method according to an embodiment of the invention.
Reference numerals illustrate:
10. an upper housing; 11. A display hole; 12. A first light hole;
13. a second light hole; 14. A first light shielding plate; 15. A second light shielding plate;
20. a lower housing; 30. A mounting cavity; 40. Measuring a pipeline;
50. pouring a rubber shell; 51. A first opening; 52. A limit column;
53. a first fixing column; 54. A second fixing column; 60. A main board;
61. a first through hole; 62. A clearance groove; 63. A display element;
64. a photosensitive element; 65. An infrared communication element; 70. A cover plate;
71. a first protective cover; 72. A second protective cover; 73. A third protective cover;
74. a support plate; 75. A first glue overflow baffle; 76. A second glue overflow baffle;
77. an extension; 78. A second through hole; 79. A limiting plate;
80. and (5) sealing the colloid.
Detailed Description
In order to prevent the display element, the infrared communication element and the photosensitive element from being damaged by sealant, and improve the sealant filling efficiency, the protective cover on the cover plate in the embodiment of the invention is buckled outside the display element, the photosensitive element and the infrared communication element on the main board, the cover plate, the main board, the cover plate and the sealant filling cavity, and the sealing sealant formed integrally is filled between the main board and the sealant filling cavity, and the display area of the display element, the photosensitive area of the photosensitive element and the communication area of the infrared communication element are exposed outside the sealing sealant. The protective cover is blocked by the sealing colloid, and the functional area of the element is not covered by the sealing colloid, so that the functional area of the element is not contacted with the sealing colloid, the element is not required to be shielded independently, and the glue filling efficiency is improved.
In order to make the above objects, features and advantages of the embodiments of the present invention more comprehensible, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to meter the flow of water in the water pipe, an electronic water meter is typically provided on the water pipe to meter the flow of water in the water pipe. The electronic water meter generally comprises a shell and a measuring pipeline arranged in the shell, wherein the shell is provided with the measuring pipeline and an electronic component, the measuring pipeline is used for measuring the flow rate of water flowing through the measuring pipeline, and the electronic component is used for carrying out data processing on the measured flow rate of water.
Referring to fig. 1, the housing of the electronic water meter in this embodiment includes an upper housing 10 and a lower housing 20, the upper housing 10 is covered on the lower housing 20, the upper housing 10 and the lower housing 20 are connected to enclose a mounting cavity 30, and the mounting cavity 30 is shown by a dotted line in fig. 1. The upper shell 10 and the lower shell 20 are in a split structure, so that the assembly of the measuring pipeline 40 and each electronic component is conveniently carried out in the installation cavity 30.
With continued reference to fig. 1, the measuring tube 40 is detachably connected to the water pipe, for example, external threads are provided on the outer peripheral surfaces of two ends of the measuring tube 40 to match with internal threads of two ends of the water pipe, that is, the measuring tube 40 is connected to the water pipe through threads, and the measuring tube 40 is connected to the water pipe through a flange.
The mounting cavity 30 is further provided with a glue-pouring shell 50, and referring to fig. 2, the glue-pouring shell 50 is connected with the upper shell 10 or the lower shell 20, for example, by means of a snap connection, so that the glue-pouring shell 50 is fixed in the mounting cavity 30, and the glue-pouring shell 50 is prevented from shaking in the mounting cavity 30.
The glue filling cavity is arranged inside the glue filling shell 50 in the embodiment, one end of the glue filling shell 50 is provided with the first opening 51, as shown in fig. 2, the first opening 51 of the glue filling shell 50 is a top opening, the first opening 51 is communicated with the glue filling cavity, the first opening 51 can be used as an inlet for liquid sealant in glue filling, the glue filling shell 50 is not required to be inverted in glue filling, the glue filling shell 50 can also be moved when the sealant for standing and waiting for liquid is solidified, the electronic water meter is assembled, and the time required by the electronic water meter assembly is reduced.
The main board 60 and the cover board 70 are disposed in the glue filling cavity, and the main board 60 and the cover board 70 can enter or be taken out of the glue filling cavity through the first opening 51. The main board 60 and the cover board 70 in the glue-pouring shell 50 are fixed relative to the glue-pouring shell 50, so that the main board 60 and the cover board 70 are prevented from being pushed away from a preset position by liquid sealant during glue pouring, and the glue-pouring effect is further affected. The main board 60 and the cover board 70 may be both fixed with the glue-pouring shell 50, or the main board 60 is fixed in the glue-pouring shell 50, and the cover board 70 is fixed on the main board 60.
Still set up spacing post 52, first fixed column 53 and second fixed column 54 in the encapsulating chamber in this embodiment, spacing post 52, first fixed column 53 and second fixed column 54 can be provided with a plurality of, for example, spacing post 52, first fixed column 53 and second fixed column 54 all are provided with two.
The above-mentioned limiting post 52 is a stepped post, as shown in fig. 2, a post with a larger end face size in the stepped post is connected to the glue-pouring shell 50, and a post with a smaller end face size is close to the first opening 51, i.e. the step face of the stepped post faces the first opening 51, and the step face can be used as a supporting surface of the main board 60.
The first fixing column 53 is disposed between the limiting column 52 and the second fixing column 54, one end of the first fixing column 53 is connected with the glue-pouring shell 50, the end face of the other end is flush with the step face of the limiting column 52, as shown in fig. 2, the lower end of the first fixing column 53 is connected with the glue-pouring shell 50, and the upper end face is flush with the step face.
One end of the second fixing post 54 is connected to the glue-pouring shell 50, and the end face of the other end is above the end face of the other end of the first fixing post 53, that is, the second fixing post 54 is higher than the first fixing post 53, so that the cover plate 70 connected to the second fixing post 54 is located above the main plate 60 connected to the first fixing post 53. The second fixing post 54 is provided with a second through hole provided with a second internal thread.
The glue filling cavity in this embodiment is further provided with a main board 60, the main board 60 may be a printed circuit board (Printed Circuit Board, abbreviated as PCB), the first surface of the main board 60 is provided with a display element 63, a photosensitive element 64 and an infrared communication element 65, the display element 63, the photosensitive element 64 and the infrared communication element 65 are disposed on the same side of the main board 60, and the above elements can be covered by a cover board 70, as shown in fig. 3, the upper surface of the main board 60 is provided with the above elements.
Referring to fig. 3, a display element 63 is used to display information, and may be a liquid crystal display (Liquid Crystal Display, abbreviated as LCD); the photosensitive element 64 can be used as a light-operated switch in the main board 60 to control the on-off of a circuit of the main board 60, and can be a photosensitive resistor, a photosensitive diode and the like; the infrared communication element 65 is used for signal transmission, and comprises an infrared transmitting tube and an infrared receiving tube, which are respectively used for transmitting and receiving infrared rays. The display element 63 and the infrared communication element 65 may be soldered to the motherboard 60.
With continued reference to fig. 3, the end of the display element 63, the photosensitive element 64, and the infrared communication element 65 away from the main board 60 is a functional area, that is, the upper end of the display element 63 is a display area for displaying information; the upper end of the photosensitive element 64 is a photosensitive area for sensing light; the upper end of the infrared communication element 65 is a communication area for receiving or transmitting infrared rays. The main board 60 supports the above elements, and at the same time, the circuits in the main board 60 are electrically connected to the above elements.
It should be noted that the functional areas of the photosensitive element 64 and the infrared communication element 65 may protrude from the glue filling cavity, that is, the photosensitive area of the photosensitive element 64 and the communication area of the infrared communication element 65 protrude from the first opening 51 of the glue filling shell 50, and the upper end surface of the glue filling shell 50 is lower than the functional areas of the photosensitive element 64 and the infrared communication element 65. So set up, the liquid sealant fills up the glue filling shell 50 in the process, can not wrap up photosensitive element 64 and infrared communication element 65's functional area yet, guarantee photosensitive element 64 and infrared communication element 65 can normally work. The display area of the display element 63 may also protrude from the glue-pouring cavity to ensure that the display element 63 can work normally.
With continued reference to fig. 3, the main board 60 is provided with a first through hole 61, and one end of the main board 60 is further provided with a clearance groove 62, and the clearance groove 62 is used for positioning the main board 60 in the glue-pouring cavity. When the main board 60 is placed on the step surface of the limit post 52 and the end surface of the first fixing post 53, the limit post 52 is located in the avoidance groove 62 of the main board 60 and abuts against the avoidance groove 62. After the first through hole 61 of the main board 60 is aligned with the first threaded hole of the first fixing column 53, the first screw penetrates through the first through hole 61 to be connected into the first threaded hole in a threaded manner, so that the main board 60 is connected with the glue filling shell 50, at this time, a gap exists between the main board 60 and the bottom surface of the glue filling cavity, and when glue is filled, the whole bottom surface of the glue filling cavity can be filled with liquid sealant, so that the main board 60 is ensured to be coated in the sealant.
A cover plate 70 is further disposed in the glue filling cavity in this embodiment, and the cover plate 70 is disposed on a side close to the first opening 51 of the glue filling shell 50 relative to the main plate 60, i.e. the cover plate 70 is located above the main plate 60.
Referring to fig. 4, the cover plate 70 is provided with a protection cover, which may be integrally protruded toward the first opening 51, and may include a first protection cover 71, a second protection cover 72, and a third protection cover 73.
Hereinafter, the protection cover includes the first protection cover 71, the second protection cover 72, and the third protection cover 73 as examples, and will not be described again.
The first protective cover 71, the second protective cover 72 and the third protective cover 73 all protrude towards the first opening 51 of the glue pouring shell 50, i.e. the openings of the first protective cover 71, the second protective cover 72 and the third protective cover 73 all face the bottom surface of the glue pouring cavity. The first protective cover 71 is fastened outside the display element 63, the second protective cover 72 is fastened outside the photosensitive element 64, and the third protective cover 73 is fastened outside the infrared communication element 65, so as to play a certain role in protecting the display element 63, the photosensitive element 64 and the infrared communication element 65.
The first protective cover 71 is a transparent cover to observe the display area of the display element 63; the second protective cover 72 and the third protective cover 73 are light-transmitting covers, so that the photosensitive element 64 and the infrared communication element 65 can receive light and infrared rays.
The cover plate 70 may be a light-transmitting plate, and the cover plate 70 may be made of light-transmitting plastic by injection molding, so as to reduce the cost of the cover plate 70. The cover plate 70 may be made of Polycarbonate (PC) plastic, acrylonitrile butadiene styrene (Acrylonitrile Butadiene Styrene, ABS) plastic, polypropylene (PP) plastic, etc.
With continued reference to fig. 4, the cover plate 70 is further provided with a support plate 74, where the support plate 74 is located on the first surface of the main plate 70, and the support plate 74 is higher than the first protective cover 71, the second protective cover 72, and the third protective cover 73, that is, in the orientation shown in fig. 4, the upper end surfaces of the support plate 74 are located above the upper end surfaces of the first protective cover 71, the second protective cover 72, and the third protective cover 73. In this way, the support plate 74 abuts against the upper housing 10 to support the upper housing 10, so as to prevent the upper housing 10 from being recessed under the action of external force to damage the components located in the protective cover.
The support plates 74 may be provided in plural numbers to enhance the supporting effect, for example, in this embodiment, three support plates 74 are provided, three support plates 74 are disposed in parallel on the first surface of the cover plate 70, one end of each support plate 74 is connected to the first protection cover 71, the other end of the support plate 74 located in the middle is flush with the end edge of the cover plate 70, and the other ends of the remaining two support plates 74 are connected to the second protection cover 72 and the third protection cover 73, respectively.
With continued reference to fig. 4, the first end of the cover plate 70 is provided with an extension 77, the extension 77 is provided with a second through hole 78, the second end of the cover plate 70 is provided with a limiting plate 79, the limiting plate 79 is provided with a counter bore, and the opening of the counter bore faces the bottom surface of the glue-pouring cavity 50. The first end and the second end of the cover plate 70 may be disposed opposite to each other, as shown in fig. 4, the front end of the cover plate 70 is the first end, and the rear end of the cover plate 70 is the second end.
It should be noted that, the extension portion 77 corresponds to the second fixing post 54 in the glue filling cavity, the limiting plate 79 corresponds to the limiting post 52 in the glue filling cavity, the counter bore of the limiting plate 79 is sleeved on the limiting post 52, the limiting post 52 contacts the bottom of the counter bore, the second through hole 78 of the extension portion 77 is aligned with the second threaded hole of the second fixing post 54, and the second screw passes through the second through hole 78 and is screwed in the second threaded hole, so as to connect the cover plate 70 with the glue filling shell 50.
The above-mentioned spacing post 52 can support and limit both the mainboard 60, also can support and limit the apron 70, has reduced the required part of fixed mainboard 60 and apron 70 to practice thrift the space in encapsulating chamber. The connection mode between the main board 60, the cover board 70 and the glue-pouring shell 50 is not limited in this embodiment, and the main board 60, the cover board 70 and the glue-pouring shell 50 may be relatively fixed, for example, the main board 60, the cover board 70 and the glue-pouring shell 50 are all connected by a buckle.
With continued reference to fig. 4, the first surface of the cover plate 70 is further provided with a first glue overflow baffle 75 and a second glue overflow baffle 76, the first glue overflow baffle 75 is disposed around the second protective cover 72, a first annular groove is formed between the first glue overflow baffle 75 and the second protective cover 72, the second glue overflow baffle 76 is disposed around the third protective cover 73, a second annular groove is formed between the second glue overflow baffle 76 and the third protective cover 73, and the liquid sealant is blocked by the first glue overflow baffle 75 and the second glue overflow baffle 76, so that the sealant cannot enter the first annular groove and the second annular groove, and other components can be accommodated in the first annular groove and the second annular groove.
It should be noted that the heights of the first glue overflow barrier 75 and the second glue overflow barrier 76 are lower than the heights of the functional areas of the display element 63, the photosensitive element 64 and the infrared communication element 65. So set up, when the liquid level of sealant is less than the up end of first overflow baffle 75 and second overflow baffle 76 when the encapsulating, the sealant can not wrap up the functional area of above-mentioned component.
It should be noted that, as shown in fig. 4, the upper end surfaces of the first glue overflow baffle 75 and the second glue overflow baffle 76 may be flush with the upper end surface of the first opening 51 of the glue pouring shell 50, so that the liquid sealant cannot enter the area between the first glue overflow baffle 75 and the second protective cover 72 and the area between the second glue overflow baffle 76 and the third protective cover 73 in the glue pouring process.
In another possible example, the first glue overflow barrier 75 and the second glue overflow barrier 76 are integrally formed, that is, the second protective cover 72 and the third protective cover 73 are disposed in a space surrounded by the first glue overflow barrier 75 and the second glue overflow barrier 76; a first protective cover 71 may be further disposed in a space surrounded by the first glue overflow barrier 75 and the second glue overflow barrier 76, for example, the first glue overflow barrier 75 and the second glue overflow barrier 76 are disposed at an edge of the cover plate 70.
When the first glue overflow baffle 75 and the second glue overflow baffle 76 respectively encircle the second protective cover 72 and the third protective cover 73, the first annular groove is provided with the first light shielding plate 14, that is, the first light shielding plate 14 is arranged between the first glue overflow baffle 75 and the second protective cover 72 to shield the periphery of the photosensitive element 64; a second light shielding plate 15 is arranged in the second annular groove, namely a first light shielding plate 14 is arranged between the second glue overflow baffle 76 and the third protective cover 73, so as to shield the periphery of the infrared communication element 65.
In one possible example, the first light shielding plate 14 and the second light shielding plate 15 are both disposed on the upper housing 10, and referring to fig. 5, the first light shielding plate 14 and the second light shielding plate 15 are both disposed in the mounting cavity 30. In order to ensure that the photosensitive element 64 and the infrared communication element 65 can receive light and infrared rays, the upper housing 10 is further provided with a first light hole 12 and a second light hole 13, and referring to fig. 6, the first light hole 12 is circumferentially surrounded by the first light shielding plate 14, and the Zhou Xiangyou second light shielding plate 15 of the second light hole 13 is circumferentially surrounded. The upper housing 10 is also provided with a display aperture 11 for viewing information on the display element 63. The display hole 11, the first light hole 12 and the second light hole 13 are all through holes.
In order to prevent dust and the like from entering the installation cavity 30, the upper case 10 is also rotatably connected to an upper cover. When the electronic water meter is observed or operated, the upper cover is opened; after the observation or operation is completed, the upper cover is closed, so that the upper cover shields the display hole 11, the first light hole 12 and the second light hole 13, to prevent dust and the like from entering the installation cavity 30.
In order to prevent moisture from entering the first protective cover 71, the second protective cover 72 and the third protective cover 73, the display element 63, the photosensitive element 64 and the infrared communication element 65 are contacted, so that the above elements fail, and an integrally formed sealing colloid 80 is filled between the main board 60 and the glue filling shell 50, between the main board 60 and the cover board 70, and between the cover board 70 and the glue filling shell 50, that is, the sealing colloid 80 is filled between the display element 63 and the first protective cover 71, between the photosensitive element 64 and the second protective cover 72, and between the infrared communication element 65 and the third protective cover 73, and functional areas of the display element 63, the photosensitive element 64 and the infrared communication element 65 are exposed outside the sealing colloid 80.
Referring to fig. 7, the openings of the first protective cover 71, the second protective cover 72 and the third protective cover 73 are sealed by the sealing glue 80, so that the display element 63, the photosensitive element 64 and the infrared communication element 65 are respectively sealed in the first protective cover 71, the second protective cover 72 and the third protective cover 73, and play a role in moisture and water proofing. Meanwhile, the sealing compound 80 does not cover the functional areas of the above elements, as shown in fig. 7, the upper surface of the sealing compound 80 is lower than the functional areas of the display element 63, the photosensitive element 64 and the infrared communication element 65, so that the above elements can work normally.
In the electronic water meter of the embodiment of the invention, the cover plate 60 and the main plate 70 are arranged in the glue filling cavity of the glue filling shell 50, the protective cover in the cover plate 60 is buckled outside the display element 63, the photosensitive element 64 and the infrared communication element 65 on the first surface of the main plate 70, and when glue is filled into the glue filling cavity, the protective cover is blocked by the sealing colloid, so that the display element 63, the photosensitive element 64 and the infrared communication element 65 are in a sealing state, and moisture-proof and waterproof treatment is carried out on the elements; in addition, due to the existence of the protective cover, the sealing colloid only seals the nonfunctional area of the element, and the functional area is exposed in the protective cover and is not shielded by the sealing colloid, so that the functional area of the element can work normally, the element is not required to be shielded separately before glue filling, the preparation work before glue filling is reduced, and the glue filling efficiency is improved.
Referring to fig. 8, the embodiment of the invention further provides a glue filling method for an electronic water meter, which is used for filling the electronic water meter with the above structure, and comprises the following steps:
step S101, the main board 60 is installed into the glue-pouring cavity of the glue-pouring shell 50 through the top opening of the glue-pouring shell 50.
The electronic water meter in this embodiment includes an upper housing 10 and a lower housing 20, a glue-pouring shell 50 is disposed in a mounting cavity 30 formed by enclosing the upper and lower housings, the glue-pouring shell 50 is provided with a glue-pouring cavity, a top opening communicated with the glue-pouring cavity is disposed at an upper end of the glue-pouring shell 50, and the top opening is used as a mounting opening of the main board 60 and the cover board 70 on one hand, and is used as a glue-pouring opening of the glue-pouring shell on the other hand.
It should be noted that, the glue-pouring shell 50 may be connected with the lower shell 20, and the main board 60 is installed in the glue-pouring cavity after the glue-pouring shell 50 is installed on the lower shell 20, so that the lower shell 20 may support the glue-pouring shell 50, so as to facilitate the installation of the main board 60.
The main board 60 is installed in the glue filling cavity through the top opening, and the functional areas of the display element 63, the photosensitive element 64 and the infrared communication element 65 on the main board 60 face the top opening of the glue filling shell 50, so that the functional areas of the elements are the final submerged area on the main board 60, and the possibility of the functional areas contacting the sealant is reduced.
In step S102, the cover plate 70 is mounted on the motherboard 60 from the top opening, and the first protective cover 71 on the cover plate 70 is fastened outside the display device 63 on the motherboard, the second protective cover 72 on the cover plate 70 is fastened outside the photosensitive device 64 on the motherboard 60, and the third protective cover 73 on the cover plate 70 is fastened outside the infrared communication device 65 on the motherboard 60.
The cover plate 70 is located above the main plate 60, and the components on the main plate 60 are respectively located in the corresponding protection covers on the cover plate 70. Wherein the first protective cover 71 is a transparent cover, and can observe information of the display element 63; the second protective cover 72 and the third protective cover 73 are light-transmitting covers, so as to ensure that the photosensitive element 64 and the infrared communication element 65 can receive light and infrared rays and work normally.
In step S103, a liquid sealant is filled into the sealant filling cavity from the top opening, the liquid level of the sealant floods the partial cover plate 70, and the display area of the display element 63, the photosensitive area of the photosensitive element 64 and the communication area of the infrared communication element 65 are located above the liquid level of the sealant.
The sealant can be organic silicon gel sealant or polyurethane sealant, and has good chemical stability and moisture resistance.
The glue filling is forward, i.e. the glue filling opening is located above the main board 60 and the cover board 70. The sealant is filled from the top opening, is positioned at the bottom of the sealant filling cavity under the action of gravity, and is continuously filled, the liquid level of the sealant gradually rises, and after the main board 60 is submerged, the sealant contacts the lower end face of the cover plate 70.
At this time, the sealant is continuously filled, the liquid level of the sealant floods the partial cover plate 70, and the openings of the first protective cover 71, the second protective cover 72 and the third protective cover 73 on the cover plate 70 are all flooded by the sealant, so that the upper spaces of the first protective cover 71, the second protective cover 72 and the third protective cover 73 form a sealed space, thereby realizing the sealing of the display area of the display element 63, the photosensitive area of the photosensitive element 64 and the communication area of the infrared communication element 65. Meanwhile, the liquid level of the sealant is lower than the functional area of the element, and the element can work normally.
And standing for curing the sealant to form a sealant 80 filled between the main board 60 and the cover plate 70, between the main board 60 and the sealant filling shell 50, and between the cover plate 70 and the sealant filling shell 50, wherein the sealant 80 is an integrally formed sealant 80.
The glue filling method of the electronic water meter in the embodiment of the invention is that the main board 60 is arranged in the glue filling cavity from the top opening of the glue filling shell 50; the cover plate 70 is arranged on the main board 60 from the top opening, and a first protective cover 71, a second protective cover 72 and a third protective cover 73 on the cover plate 70 are respectively buckled outside the display element 63, the photosensitive element 64 and the infrared communication element 65 on the main board 60; a liquid sealant is filled into the sealant filling cavity from the top opening, and the liquid level of the sealant floods a part of the cover plate 70 and is below the display area of the display element 63, the photosensitive area of the photosensitive element 64 and the communication area of the infrared communication element 65. According to the glue filling method, the height of the liquid surface of the liquid sealant is controlled when glue is filled, so that the sealant coats the main board 60, the cover body is blocked, and the functional area of the element is not submerged, the element cannot be damaged by the sealant, normal operation of the element is guaranteed, meanwhile, the element does not need to be shielded before glue filling, and glue filling efficiency is improved.
In this specification, each embodiment or implementation is described in a progressive manner, and each embodiment focuses on a difference from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present invention.
In the description of the present specification, reference is made to "one embodiment," "some embodiments," "an exemplary embodiment," "an example," "a particular instance," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. The electronic water meter is characterized by comprising a glue pouring shell, wherein a glue pouring cavity is arranged in the glue pouring shell, and a main board and a cover plate are arranged in the glue pouring cavity;
the first surface of the main board is provided with a display element, a photosensitive element and an infrared communication element;
the cover plate comprises a protective cover, and the protective cover is buckled outside the display element, the photosensitive element and the infrared communication element;
the sealing glue is filled between the cover plate and the glue filling cavity, between the cover plate and the main board, and between the main board and the glue filling cavity, and the display area of the display element, the photosensitive area of the photosensitive element and the communication area of the infrared communication element are all exposed outside the sealing glue;
the protective cover comprises a first protective cover buckled outside the display element, a second protective cover buckled outside the photosensitive element and a third protective cover buckled outside the infrared communication element;
the first surface of the cover plate is also provided with a first glue overflow baffle, and the first glue overflow baffle is arranged around the second protective cover;
the first surface of the cover plate is also provided with a second glue overflow baffle, and the second glue overflow baffle is arranged around the third protective cover;
the photosensitive area of the photosensitive element and the communication area of the infrared communication element are protruded out of the glue filling cavity.
2. The electronic water meter of claim 1, further comprising an upper housing and a lower housing, the upper housing and the lower housing enclosing a mounting cavity that accommodates the glue-filled housing, the glue-filled housing being connected to the lower housing;
the upper shell is provided with a display hole corresponding to the first protective cover, a first light hole corresponding to the second protective cover and a second light hole corresponding to the third protective cover.
3. The electronic water meter of claim 2, wherein the upper housing is provided with a first light shield positioned in the mounting cavity, the first light shield positioned around the first light hole, and the first light shield positioned between the second protective cover and the first glue overflow barrier;
the upper shell is further provided with a second light shielding plate located in the mounting cavity, the second light shielding plate surrounds the second light holes, and the second light shielding plate is located between the third protective cover and the second glue overflow baffle.
4. The electronic water meter of any of claims 1-3, wherein the first surface of the cover plate is further provided with a support plate, the support plate having a height that is higher than the first protective cover, the second protective cover, and the third protective cover.
5. The electronic water meter of any of claims 1-3, wherein one end of the main board is provided with a clearance groove, and the main board is further provided with a first through hole;
a limiting column is arranged in the glue filling cavity in a region corresponding to the avoidance groove, the limiting column is a stepped column, the step surface of the stepped column faces the main board, a first fixing column is arranged in the glue filling cavity in a region corresponding to the first through hole, and a first internal thread is arranged on the first fixing column;
the main board is placed on the step surface and the end face of the first fixing column, the limiting column is located in the avoidance groove of the main board, and the main board and the glue pouring shell are fixed by a first screw penetrating through the first through hole and being in threaded connection with the first internal thread.
6. The electronic water meter of claim 5, wherein a second fixing post is further disposed in the glue-pouring cavity, and the second fixing post is provided with a second internal thread;
the one end of apron is provided with the extension, the extension is provided with the second through-hole, the other end of apron is provided with the limiting plate, the limiting plate is provided with the counter bore, the counter bore lid is located on the spacing post, the apron with glue-pouring shell is fixed by passing through the second through-hole and threaded connection is in the second screw in the second internal thread.
7. A glue filling method of an electronic water meter, comprising the steps of:
installing a main board into a glue filling cavity of a glue filling shell from the top opening of the glue filling shell;
installing a cover plate on the main board from the top opening, wherein a first protective cover on the cover plate is buckled outside a display element on the main board, a second protective cover on the cover plate is buckled outside a photosensitive element on the main board, and a third protective cover on the cover plate is buckled outside an infrared communication element on the main board;
filling liquid sealant into the sealant filling cavity from the top opening, wherein the liquid level of the sealant submerges part of the cover plate, and the display area of the display element, the photosensitive area of the photosensitive element and the communication area of the infrared communication element are positioned above the liquid level of the sealant;
the first surface of apron still is provided with first excessive glue baffle and second excessive glue baffle, first excessive glue baffle encircles the setting of second safety cover, the second excessive glue baffle encircles the setting of third safety cover.
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| CN202010830567.7A CN111822230B (en) | 2020-08-18 | 2020-08-18 | Electronic water meter and glue filling method thereof |
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| CN202010830567.7A CN111822230B (en) | 2020-08-18 | 2020-08-18 | Electronic water meter and glue filling method thereof |
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| CN111822230B true CN111822230B (en) | 2023-12-05 |
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| CN111822230A (en) | 2020-10-27 |
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