Glue filling water meter assembly

Abstract

The utility model discloses a glue filling meter assembly, relates to the technical field of water meters, and aims to solve the problems that a remote water meter antenna is poor in waterproofness, low in glue filling speed and complex in structure, the glue filling meter assembly comprises a glue filling cavity formed between a circuit board bin and a transparent cover, and a plurality of exhaust holes are formed in the transparent cover; an antenna is arranged above a circuit board in the circuit board bin, and the antenna and the circuit board are arranged in a glue pouring cavity filled with glue; the transparent cover comprises a transparent cover plane part and a transparent cover protruding part, a glue pouring opening is formed in the transparent cover plane part, and an antenna cavity containing an antenna is correspondingly arranged in the transparent cover protruding part. The glue pouring water meter assembly can well protect the antenna, can improve the glue pouring speed so as to improve the production efficiency, and is simple in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of water meters, and mainly relates to a glue-filled water meter component. Background Art

[0002] The installation environment of water meters is harsh. Not only is the humidity high, but it is also likely to be directly exposed to rain or even flooded. In order to prevent water from penetrating into the electronic components of the smart water meter and causing damage to the water meter, extremely high requirements are placed on the seal of the water meter. At present, most water meters are sealed by glue filling or adding sealing rings. The function of water meter glue filling is to effectively prevent water and other impurities from contacting the circuit board, keep the circuit board dry, and prevent short circuits and open circuits after the circuit board is damp; the mechanical structure sealing method with sealing rings has high requirements on space dimensions and complex structures, and the sealing rings are prone to aging, and the deformation of plastic parts is large, so the sealing effect of the sealing rings is greatly reduced.

[0003] The antenna is one of the most critical components of wireless remote water meters. In order to ensure signal strength, the antenna is not allowed to be coated with glue. However, if the antenna is exposed to a humid environment, it will rust over time, resulting in reduced sensitivity of the received signal. In addition, in order to improve production efficiency, the glue filling speed needs to be increased. When the glue discharge speed is increased, the air in the plastic part will not be discharged in time, and the rated glue filling amount will overflow at the glue filling port, eventually causing glue residue on the outer surface of the product and failure of the waterproof and moisture-proof seal.

[0004] For example, there is a Chinese patent with publication number CN117705217A, which relates to a water meter with glue sealing. A transparent window is provided to cover the circuit board, and glue is poured into the lower shell through the transparent window. The glue seals the circuit board to prevent moisture or water from entering the lower shell and corroding the components in the lower shell; by arranging a metal-to-metal sealed contact between a sealing copper part and the actuator end of the actuator, water seepage through gaps caused by thermal expansion and contraction is prevented, thereby improving the service life of the water meter. However, the Chinese patent with publication number CN117705217A requires glue filling through a glue filling tube, which has a slow filling speed, low production efficiency, and a complex structure and high production cost. Utility Model Content

[0005] In order to solve the problems of poor waterproofness, slow glue filling speed and complex structure of remote water meter antenna, the utility model proposes a glue filling water meter component, which can well protect the antenna, increase the glue filling speed to improve production efficiency, and has a simple structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a glue-filled water meter component,

[0007] It includes a glue-filling cavity formed between the circuit board bin and the transparent cover, and a plurality of exhaust holes are arranged on the transparent cover; an antenna is installed above the circuit board in the circuit board bin, and both are arranged in the glue-filling cavity filled with glue; the transparent cover includes a transparent cover plane part and a transparent cover protruding part, and a glue-filling port is arranged on the transparent cover plane part, and an antenna cavity containing an antenna is correspondingly contained in the transparent cover protruding part.

[0008] In this technical solution, the circuit board bin is a plastic part for placing circuit boards. The transparent cover is fixed to the circuit board bin by a snap-on structure. The transparent cover is made of transparent material to ensure that the glue condition can be observed during the glue pouring process, thereby facilitating the glue pouring operation.

[0009] The transparent cover at the corresponding position of the antenna protrudes outward to form a transparent cover protrusion. After the glue solidifies, a closed antenna cavity is formed between the transparent cover protrusion. The antenna is just in the antenna cavity, thereby ensuring that the antenna is isolated from the outside world.

[0010] The existence of the antenna cavity ensures that the antenna is neither in contact with water nor with glue, thereby avoiding the problem of reduced sensitivity of the receiving signal caused by rusting of the antenna due to long-term exposure to a humid environment, and ensuring the antenna signal strength.

[0011] A plurality of exhaust holes are provided in the gap between the circuit board bin and the transparent cover or inside the transparent cover. When glue is poured, the glue enters the glue filling cavity from the glue filling port through the glue filling machine. The air in the glue filling cavity is squeezed and overflows from the exhaust holes. The glue fills the glue filling cavity from bottom to top and completely covers the circuit board. When the glue covering height reaches the upper surface of the plane part of the transparent cover, the glue covers and fills the glue filling port and the exhaust port, and the antenna cavity in the protruding part of the transparent cover is separated by glue to form a closed structure, and the glue pouring is completed.

[0012] The utility model is further configured as follows: the edge of the transparent cover is lower than the plane portion of the transparent cover, a plurality of first buckles are provided on the inner wall of the circuit board bin, and the transparent cover is fixed on the circuit board bin by the plurality of first buckles.

[0013] In the present technical solution, the transparent cover is connected and fixed to the circuit board bin by a snap-fit ​​structure. The snap-fit ​​structure is a detachable structure and can be disassembled or assembled at any time before glue pouring. Moreover, the snap-fit ​​structure is easy to install and convenient to use. The snap-fit ​​structure can also keep the transparent cover stable and not move during glue pouring, so that the glue pouring effect is good and bubbles are not easy to appear.

[0014] The utility model is further configured as follows: a chamfer is provided at a corner of the transparent cover, and a gap is provided between a corresponding corner of the circuit board bin and a corner of the transparent cover to form an exhaust hole.

[0015] In this technical solution, the transparent cover matches the opening shape of the circuit board bin, but the corners are set to be rounded, so that there are gaps at the corners of the circuit board bin that are not covered by the transparent cover, forming exhaust holes. The existence of the exhaust holes allows the air in the glue filling cavity to be discharged more smoothly after the glue is filled into the glue filling cavity, thereby increasing the glue filling speed.

[0016] The utility model is further configured as follows: a plurality of positioning posts are provided on the circuit board magazine, a plurality of positioning post grooves corresponding to the positioning posts are provided on the circuit board, and the positioning posts are fixed in the positioning post grooves.

[0017] In the present technical solution, the positioning column plays a positioning and supporting role. On the one hand, it ensures that the circuit board is in a fixed position in the glue filling chamber and does not move. On the other hand, it supports the circuit board so that there is a gap between the bottom of the circuit board and the circuit board bin for glue filling, which effectively prevents water and other impurities from contacting the circuit board, keeps the circuit board dry, and prevents short circuits and open circuits after the circuit board becomes damp.

[0018] The utility model is further configured as follows: a plurality of second buckles are provided in the circuit board compartment, and the circuit board is fixed in the circuit board compartment through the second buckles.

[0019] In the present technical solution, the circuit board is also connected and fixed to the circuit board bin by a snap-on structure. The snap-on structure is a detachable structure and can be disassembled or assembled at any time before glue pouring. Moreover, the snap-on structure is easy to install and convenient to use. The snap-on structure can also keep the circuit board stable and not move during glue pouring, so that the glue pouring effect is good and bubbles are not easy to appear.

[0020] The utility model is further configured that: the glue injection opening is a circular hole, and the diameter of the glue injection opening on the upper surface of the transparent cover plane portion is greater than the diameter of the glue injection opening on the lower surface of the transparent cover plane portion.

[0021] In the technical solution, the glue filling port is a circular hole, and glue can be filled from the glue filling port through a glue filling machine. The diameter of the glue filling port is large outside and small inside, so that glue can flow into the glue filling cavity more easily.

[0022] The utility model is further configured as follows: the transparent cover at the position corresponding to the antenna protrudes outward to form a transparent cover protrusion, and a closed antenna cavity is formed between the glue and the transparent cover protrusion.

[0023] In this technical solution, the glue and the protruding portion of the transparent cover form a closed antenna cavity, and the antenna is just in the antenna cavity, thereby ensuring that the antenna is isolated from the outside world.

[0024] The utility model is further configured as follows: glue is arranged in a glue filling cavity which is not higher than the height of the upper surface of the transparent cover plane portion, and a closed antenna cavity is formed between the glue and the protruding portion of the transparent cover.

[0025] In this technical solution, when the glue reaches the upper surface of the flat surface of the transparent cover, the glue completely fills all the openings of the transparent cover, and the antenna cavity forms a closed space.

[0026] The utility model is further configured such that: the transparent cover at the position corresponding to the antenna protrudes outwards to form a transparent cover protrusion.

[0027] In the technical solution, the transparent cover at the position corresponding to the antenna protrudes outward to form a transparent cover protrusion, and the transparent cover protrusion accommodates the antenna.

[0028] The utility model is further configured as follows: the circuit board is fixedly connected to the circuit board bin as a whole by glue, and the transparent cover is fixedly connected to the circuit board bin as a whole by glue.

[0029] In this technical solution, the glue not only connects the circuit board 4, the transparent cover 1 and the circuit board compartment 2 into one, but also protects the circuit board and the antenna from being damaged by water.

[0030] The utility model is further configured that: the antenna is electrically connected to the circuit board.

[0031] In this technical solution, the antenna is electrically connected to the circuit board and is sealed with glue to isolate it from the outside world, ensuring that the circuit is not damaged by external water or other impurities.

[0032] The beneficial effects of the utility model are:

[0033] 1. Use glue to fill the circuit board. Use hard glue to fill the circuit board bin, circuit board and transparent cover together, which effectively ensures the waterproofness of the circuit board;

[0034] 2. A closed empty cavity is formed between the transparent cover and the glue. The antenna is located in this cavity, which effectively ensures the waterproofness of the antenna.

[0035] 3. Set multiple exhaust holes on the transparent cover to increase the glue filling speed and improve production efficiency;

[0036] 4. Since the circuit board bin, circuit board and transparent cover are all glued together, the glue filling height can be effectively guaranteed and the waterproof effect will be better. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The utility model discloses an axonometric drawing of a glue-filling water meter component.

[0038] Figure 2 The utility model discloses an axonometric diagram of a glue-filled water meter component with a transparent cover and glue removed.

[0039] Figure 3 It is a front view of a glue-filled water meter component of the utility model.

[0040] Figure 4The utility model is a cross-sectional view of a glue-filled water meter component.

[0041] Figure 5 The utility model is a side view of a glue-filled water meter component.

[0042] Explanation of the reference numerals: transparent cover 1; transparent cover plane portion 1-1; transparent cover protrusion 1-2; glue filling port 1-3; circuit board compartment 2; first clip 2-1; second clip 2-2; positioning column 2-3; exhaust hole 3; circuit board 4; antenna 4-1; glue 5; antenna cavity 6. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific implementation method described here is only an optimal embodiment of the utility model, which is only used to explain the utility model and does not limit the protection scope of the utility model. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0044] Generally speaking, the installation environment of water meters is harsh, not only with high humidity, but also with the possibility of being exposed to direct rain or even being submerged in water.

[0045] Current smart water meters all have electronic parts. If the electronic components, such as circuit boards, accidentally come into contact with water, short circuits or open circuits may occur, which will not only cause the water meter to fail to work properly, but may also pose a safety hazard. Therefore, extremely high requirements are placed on its sealing.

[0046] The wireless remote transmission smart water meter also has an antenna. If the antenna is exposed to a humid environment, it will rust over time, thereby reducing the sensitivity of the antenna to receive signals. In order to ensure signal strength, glue cannot be used to cover it. Therefore, water meters with antennas have higher requirements for sealing.

[0047] Currently, there are two main solutions for sealing the infinite remote water meter in the prior art, one is to add a sealing ring, and the other is to inject glue.

[0048] The mechanical structure sealing method with sealing ring has high requirements on space size and complex structure. The sealing ring is easy to age and the deformation of plastic parts is large, so the sealing effect of the sealing ring is greatly reduced.

[0049] Glue filling can effectively prevent water and other impurities from contacting the circuit board, keep the circuit board dry, and prevent short circuits and open circuits after the circuit board becomes damp.

[0050] The utility model performs glue filling and sealing on the circuit board, and the antenna is sealed in the air with glue by utilizing a special structure, thereby ensuring that the circuit board and the antenna are completely isolated from the outside world.

[0051] In addition, in order to improve production efficiency, the glue filling speed needs to be increased. When the glue discharge speed is increased, the air in the plastic parts will not have time to be discharged, and the rated glue filling amount will overflow at the glue filling port, eventually causing glue residue on the outer surface of the product and failure of the waterproof and moisture-proof seal.

[0052] The utility model is provided with a plurality of exhaust holes to ensure that after the glue discharge speed is increased, the air in the plastic part can be discharged in time to prevent glue overflow, thereby effectively improving the production efficiency.

[0053] Example 1

[0054] This embodiment provides a glue-filled water meter assembly, referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 , mainly includes a transparent cover 1, a circuit board compartment 2, a circuit board 4 and glue 5.

[0055] The glue-filled water meter component is used in remote water meters, which can not only protect the antenna well but also increase the glue-filling speed.

[0056] In this embodiment, the antenna transmits the water meter data to the data platform, and the circuit board calculates the water meter flow and transmits the data, and both need to be completely isolated from the outside world to prevent them from being damaged by contact with water or other impurities.

[0057] The circuit board bin 2 is a plastic part, and the circuit board bin 2 has a circuit board 4 and an antenna 4 - 1 built in. The circuit board 4 and the antenna 4 - 1 are both fixed in the circuit board bin 2 , and the antenna 4 - 1 is electrically connected to the circuit board 4 .

[0058] The transparent cover 1 includes a transparent cover plane portion 1-1 and a transparent cover protruding portion 1-2. The transparent cover 1 is buckled on the circuit board bin 2 and fixed by a snap-on structure. The transparent cover is made of transparent material throughout, which can be used as a sealing cover of the circuit board bin 2 without affecting the observation of the glue filling process in the circuit board bin 2 and the situation after the glue is cured.

[0059] The circuit board 4 is located below the transparent cover plane portion 1 - 1 in the circuit board compartment 2 , and the antenna 4 - 1 is located in the antenna cavity 6 in the circuit board compartment 2 surrounded by the transparent cover protrusion 1 - 2 .

[0060] The circuit board bin 2 is a hollow container with an upper opening. After the transparent cover is buckled onto the circuit board bin 2, a glue filling cavity is formed between the circuit board bin 2 and the transparent cover 1, and the circuit board 4 and the antenna 4-1 are both located in the glue filling cavity.

[0061] The transparent cover 1 is also provided with a glue filling port 1-3, and the glue 5 enters the glue filling cavity from the glue filling port 1-3. The glue filling port 1-3 is set as a circular hole, and a glue filling machine can be used for glue filling. The diameter of the glue filling port 1-3 on the upper surface of the transparent cover plane part 1-1 is larger than the diameter of the glue filling port 1-3 on the lower surface of the transparent cover plane part 1-1. The glue 5 is easier to enter the glue filling cavity, and the glue 5 is not easy to flow onto the transparent cover 1.

[0062] A plurality of exhaust holes 3 are provided in the gap between the circuit board bin 2 and the transparent cover 1 or inside the transparent cover to ensure that the air in the plastic part can be discharged in time after the glue discharge speed is increased to prevent glue overflow at the glue filling port. The provision of the exhaust holes 3 can effectively improve production efficiency.

[0063] When pouring glue, the glue enters the glue cavity from the glue filling port through the glue filling machine. The air in the glue cavity is squeezed and overflows from the exhaust hole. The glue fills the glue cavity from bottom to top and completely covers the circuit board.

[0064] When the glue coverage height reaches the upper surface of the flat part of the transparent cover, the glue covers and fills the glue filling port and the exhaust port, the antenna cavity in the protruding part of the transparent cover is separated by the glue to form a closed structure, and the glue filling is completed.

[0065] The corners of the transparent cover 1 are all rounded, and there is a gap between the corresponding corners of the circuit board compartment 2 and the corners of the transparent cover 1 to form an exhaust hole 3.

[0066] In this embodiment, the transparent cover matches the opening shape of the circuit board bin, but the corners are set to be rounded, so that there are gaps at the corners of the circuit board bin that are not covered by the transparent cover, forming exhaust holes. The existence of the exhaust holes allows the air in the glue filling cavity to be discharged more smoothly after the glue is filled into the glue filling cavity, thereby increasing the glue filling speed.

[0067] The edge of the transparent cover 1 is lower than the transparent cover plane portion 1 - 1 . The transparent cover 1 is fixed on the circuit board bin 2 via a plurality of buckles 2 - 2 . The buckles 2 - 2 are arranged at corresponding positions between the circuit board bin 2 and the transparent cover 1 .

[0068] In this embodiment, the transparent cover is connected and fixed to the circuit board compartment by a snap-fit ​​structure. The snap-fit ​​structure is a detachable structure and can be disassembled or assembled at any time before glue filling.

[0069] Moreover, the snap-on structure is not only easy to install and use, but also enables the transparent cover to remain stable and not move during glue pouring, thereby ensuring the glue pouring effect and preventing bubbles from appearing after glue pouring.

[0070] The snap-fit ​​structure allows the transparent cover to be firmly fixed on the circuit board compartment, and will not be deformed or shifted due to stress during the glue curing stage.

[0071] One or more positioning posts 2-3 are arranged on the circuit board compartment, and one or more positioning post grooves corresponding to the positioning posts 2-3 are arranged on the circuit board 4, and the positioning posts are all fixed in the positioning post grooves.

[0072] In this embodiment, the positioning column plays a positioning and supporting role.

[0073] On the one hand, it ensures that the circuit board is in a fixed position in the glue filling chamber and does not move. On the other hand, the circuit board is supported so that there is a gap between the bottom of the circuit board and the circuit board compartment for glue filling, which effectively prevents water and other impurities from contacting the circuit board, keeps the circuit board dry, and prevents short circuits and open circuits after the circuit board becomes damp.

[0074] A plurality of buckles 2 - 2 are provided at positions corresponding to the circuit board bin 2 and the circuit board 4 , and the circuit board 4 is fixed in the circuit board bin 2 by the buckles 2 - 2 .

[0075] In this embodiment, the circuit board is also connected and fixed to the circuit board bin by a snap-fit ​​structure. The snap-fit ​​structure is a detachable structure and can be disassembled or assembled at any time before glue filling.

[0076] Moreover, the snap-on structure is not only easy to install and use, but also can keep the circuit board stable and not move during glue pouring, thus ensuring the glue pouring effect and preventing bubbles from appearing after glue pouring.

[0077] The glue injection port 1-3 is a circular hole, and the diameter of the glue injection port 1-3 on the upper surface of the transparent cover plane portion 1-1 is larger than the diameter of the glue injection port 1-3 on the lower surface of the transparent cover plane portion 1-1.

[0078] In this embodiment, the glue filling port is a circular hole, and glue can be filled from the glue filling port by a glue filling machine. The diameter of the glue filling port is large outside and small inside, so that glue can flow into the glue filling cavity more easily.

[0079] Glue 5 is filled in the glue cavity which is not higher than the upper surface of the transparent cover plane. After the glue 5 is cured, a closed antenna cavity 6 is formed between the glue 5 and the protruding part of the transparent cover. The antenna is just in the antenna cavity 6, thereby ensuring that the antenna 4-1 is isolated from the outside world.

[0080] It ensures that the antenna 4-1 is still in the antenna cavity 6 filled with air after being filled with glue, and will not be exposed to water and other impurities from the outside, nor will it be covered by the glue 5, thus avoiding the problem of reduced sensitivity of the receiving signal caused by rusting of the antenna 4-1 due to being in a humid environment for a long time, and ensuring the antenna signal strength.

[0081] When the glue reaches the upper surface of the transparent cover plane portion 1 - 1 , the glue completely fills all the openings of the transparent cover 1 , and the antenna cavity 6 forms a closed space.

[0082] The transparent cover 1 at the position corresponding to the antenna 4 - 1 protrudes outward to form a transparent cover protruding portion 1 - 2 , and the transparent cover protruding portion 1 - 2 accommodates the antenna.

[0083] The circuit board 4 is fixedly connected to the circuit board bin 2 as a whole through the glue 5 , and the transparent cover 1 is fixedly connected to the circuit board bin 2 as a whole through the glue 5 .

[0084] The glue not only connects the circuit board 4, the transparent cover 1 and the circuit board compartment 2 as a whole, but also protects the circuit board 4 and the antenna 4-1 from being damaged by water.

[0085] The antenna 4 - 1 is electrically connected to the circuit board 2 and is sealed and isolated from the outside by glue 5 to ensure that the circuit is not damaged by external water or other impurities.

[0086] The assembly process and glue filling process are described in detail below.

[0087] During assembly, the antenna 4 - 1 is welded on the circuit board 4 , the welded antenna and circuit board are positioned by the positioning column 2 - 3 , and the buckle 2 - 2 is fixed on the circuit board compartment 2 .

[0088] A gap is left between the circuit board 4 and the circuit board compartment 2 for glue pouring. The transparent cover 1 is buckled on the circuit board compartment 2. A gap is left between the transparent cover 1 and the circuit board 4 for glue pouring. At the position of the antenna, the gap between the transparent cover 1 and the circuit board 4 is enlarged.

[0089] The glue is poured at the glue pouring port 1 - 3 by a glue pouring machine and stops when the glue reaches the height of the upper surface of the transparent cover plane portion 1 - 1 , and the air in the plastic cavity is discharged through the exhaust hole 3 .

[0090] A sealed cavity 6 is formed between the transparent cover 1-2 and the glue 5, and the antenna 4-1 is just in the sealed cavity 6, thereby ensuring that the antenna is isolated from the outside. The glue 5 connects the circuit board compartment 2, the circuit board 4, and the transparent cover 1 together.

[0091] This embodiment has the following beneficial effects.

[0092] Use hard glue to seal the circuit board compartment, circuit board, and transparent cover together, effectively ensuring the circuit board is waterproof.

[0093] A closed empty cavity is formed between the transparent cover and the glue. The antenna is located in this cavity, which effectively ensures the waterproofness of the antenna.

[0094] Multiple exhaust holes are set on the transparent cover to increase the glue filling speed and improve production efficiency.

[0095] Since the circuit board bin, circuit board and transparent cover are all glued together, the glue filling height can be effectively guaranteed and the waterproof effect is better.

[0096] Example 2

[0097] This embodiment provides a glue filling meter assembly, which mainly includes a transparent cover, a circuit board compartment, a circuit board and glue.

[0098] The glue-filled water meter component is used in remote water meters, which can not only protect the antenna well but also increase the glue-filling speed.

[0099] In this embodiment, the antenna transmits the water meter data to the data platform, and the circuit board calculates the water meter flow and transmits the data, and both need to be completely isolated from the outside world to prevent them from being damaged by contact with water or other impurities.

[0100] Among them, the circuit board bin is a plastic part, and the circuit board bin contains a circuit board and an antenna. The circuit board and the antenna are both fixed in the circuit board bin, and the antenna is electrically connected to the circuit board.

[0101] The transparent cover includes a transparent cover plane portion and a transparent cover protruding portion. The transparent cover is buckled on the circuit board bin and fixed by a snap-on structure. The transparent cover is made of transparent material throughout and can be used as a sealing cover for the circuit board bin without affecting the observation of the glue filling process in the circuit board bin and the situation after the glue is cured.

[0102] The circuit board is located below the plane portion of the transparent cover in the circuit board compartment, and the antenna is located in an antenna cavity surrounded by the protruding portion of the transparent cover in the circuit board compartment.

[0103] The circuit board bin is a hollow container with an upper opening. After the transparent cover is buckled onto the circuit board bin, a glue filling cavity is formed between the circuit board bin and the transparent cover, and the circuit board and the antenna are both located in the glue filling cavity.

[0104] The transparent cover is also provided with a glue filling port, and the glue enters the glue filling cavity from the glue filling port. The glue filling port is set as a circular hole, and a glue filling machine can be used for glue filling. The diameter of the glue filling port on the upper surface of the flat surface of the transparent cover is larger than the diameter of the glue filling port on the lower surface of the flat surface of the transparent cover. The glue can enter the glue filling cavity more easily, and the glue is not easy to flow onto the transparent cover.

[0105] The transparent cover is also provided with a plurality of exhaust holes, which are small circular holes with a diameter smaller than the glue filling port and are evenly distributed on the flat surface of the transparent cover to ensure that the air in the plastic parts can be discharged in time after the glue discharge speed is increased to prevent glue overflow at the glue filling port. The setting of the exhaust holes can effectively improve production efficiency.

[0106] In some other embodiments, the exhaust hole may also be configured as an opening of other shapes.

[0107] The height of the upper surface of the transparent cover plane is the glue injection height, and the glue injection cavity below the glue injection height is filled with glue.

[0108] A closed antenna cavity is formed between the glue and the protruding part of the transparent cover. The lowest point of the antenna is higher than the glue filling height, ensuring that the antenna is still in the antenna cavity filled with air after glue filling. It will not be exposed to external water and other impurities, nor will it be covered by glue to affect signal strength.

[0109] In this embodiment, the transparent cover at the corresponding position of the antenna protrudes outward to form a transparent cover protrusion. After the glue solidifies, a closed antenna cavity is formed between the transparent cover protrusion. The antenna is just in the antenna cavity, thereby ensuring that the antenna is isolated from the outside world.

[0110] The existence of the antenna cavity ensures that the antenna is neither in contact with water nor with glue, thereby avoiding the problem of reduced sensitivity of the receiving signal caused by rusting of the antenna due to long-term exposure to a humid environment, and ensuring the antenna signal strength.

[0111] When pouring glue, the glue enters the glue cavity from the glue filling port through the glue filling machine. The air in the glue cavity is squeezed and overflows from the exhaust hole. The glue fills the glue cavity from bottom to top and completely covers the circuit board.

[0112] When the glue coverage height reaches the upper surface of the flat part of the transparent cover, the glue covers and fills the glue filling port and the exhaust port, the antenna cavity in the protruding part of the transparent cover is separated by the glue to form a closed structure, and the glue filling is completed.

[0113] The corners of the transparent cover are all rounded, and there is a gap between the corresponding corner of the circuit board compartment and the corner of the transparent cover to form an exhaust hole.

[0114] In this embodiment, the transparent cover matches the opening shape of the circuit board bin, but the corners are set to be rounded, so that there are gaps at the corners of the circuit board bin that are not covered by the transparent cover, forming exhaust holes. The existence of the exhaust holes allows the air in the glue filling cavity to be discharged more smoothly after the glue is filled into the glue filling cavity, thereby increasing the glue filling speed.

[0115] The edge of the transparent cover is lower than the plane part of the transparent cover. The transparent cover is fixed on the circuit board bin through a plurality of buckles. The buckles are arranged at corresponding positions between the circuit board bin and the transparent cover.

[0116] In this embodiment, the transparent cover is connected and fixed to the circuit board compartment by a snap-fit ​​structure. The snap-fit ​​structure is a detachable structure and can be disassembled or assembled at any time before glue filling.

[0117] Moreover, the snap-on structure is not only easy to install and use, but also enables the transparent cover to remain stable and not move during glue pouring, thereby ensuring the glue pouring effect and preventing bubbles from appearing after glue pouring.

[0118] The snap-fit ​​structure allows the transparent cover to be firmly fixed on the circuit board compartment, and will not be deformed or shifted due to stress during the glue curing stage.

[0119] One or more positioning posts are arranged on the circuit board compartment, and one or more positioning post grooves corresponding to the positioning posts are arranged on the circuit board, and the positioning posts are all fixed in the positioning post grooves.

[0120] In this embodiment, the positioning column plays a positioning and supporting role.

[0121] On the one hand, it ensures that the circuit board is in a fixed position in the glue filling chamber and does not move. On the other hand, the circuit board is supported so that there is a gap between the bottom of the circuit board and the circuit board compartment for glue filling, which effectively prevents water and other impurities from contacting the circuit board, keeps the circuit board dry, and prevents short circuits and open circuits after the circuit board becomes damp.

[0122] A plurality of buckles are provided at corresponding positions of the circuit board bin and the circuit board, and the circuit board is fixed in the circuit board bin by the buckles.

[0123] In this embodiment, the circuit board is also connected and fixed to the circuit board bin by a snap-fit ​​structure. The snap-fit ​​structure is a detachable structure and can be disassembled or assembled at any time before glue filling.

[0124] Moreover, the snap-on structure is not only easy to install and use, but also can keep the circuit board stable and not move during glue pouring, thus ensuring the glue pouring effect and preventing bubbles from appearing after glue pouring.

[0125] In this embodiment, the glue filling port is a circular hole, and glue can be filled from the glue filling port by a glue filling machine. The diameter of the glue filling port is large outside and small inside, so that glue can flow into the glue filling cavity more easily.

[0126] The glue is filled in the glue cavity which is not higher than the upper surface of the transparent cover plane. After the glue is cured, a closed antenna cavity is formed between the glue and the transparent cover protrusion. The antenna is just in the antenna cavity, thereby ensuring that the antenna is isolated from the outside world.

[0127] Ensure that the antenna is still in the antenna cavity filled with air after glue filling, and will not be exposed to external water and other impurities, nor will it be covered by glue, thus avoiding the problem of reduced receiving signal sensitivity caused by rusting of the antenna due to long-term exposure to a humid environment, and ensuring the antenna signal strength.

[0128] When the glue reaches the upper surface of the flat surface of the transparent cover, the glue completely fills all the openings of the transparent cover, and the antenna cavity forms a closed space.

[0129] The transparent cover at the position corresponding to the antenna protrudes outward to form a transparent cover protruding portion -, and the transparent cover protruding portion - accommodates the antenna.

[0130] The circuit board is fixedly connected to the circuit board bin by glue, and the transparent cover is fixedly connected to the circuit board bin by glue.

[0131] The glue not only connects the circuit board, transparent cover and circuit board compartment into one, but also protects the circuit board and antenna from being damaged by water.

[0132] Antenna - electrically connected to the circuit board and sealed with glue to isolate it from the outside world to ensure that the circuit is not damaged by external water or other impurities.

[0133] In addition to the above examples, the present invention may also have other implementations. Any technical solution formed by equivalent replacement or equivalent change is within the protection scope of the present invention.

Claims

1. A glue-filling water meter assembly, characterized in that: It includes a glue-filling cavity formed between a circuit board bin and a transparent cover, and the transparent cover is provided with a plurality of exhaust holes; an antenna is installed above the circuit board in the circuit board bin, and both are arranged in the glue-filling cavity filled with glue; the transparent cover includes a transparent cover plane part and a transparent cover protruding part, and the transparent cover plane part is provided with a glue-filling port, and the transparent cover protruding part corresponds to an antenna cavity containing an antenna.

2. A glue-filled water meter assembly according to claim 1, characterized in that: The edge of the transparent cover is lower than the plane part of the transparent cover, a plurality of first buckles are arranged on the inner wall of the circuit board bin, and the transparent cover is fixed on the circuit board bin through the plurality of first buckles.

3. A glue-filling water meter assembly according to claim 2, characterized in that: The corners of the transparent cover are chamfered, and there is a gap between the corresponding corners of the circuit board compartment and the corners of the transparent cover to form an exhaust hole.

4. The glue-filling water meter assembly according to claim 1, characterized in that: The circuit board bin is also provided with a plurality of positioning posts, and the circuit board is provided with a plurality of positioning post grooves corresponding to the positioning posts, and the positioning posts are fixed in the positioning post grooves.

5. The glue-filling water meter assembly according to claim 4, characterized in that: A plurality of second buckles are also provided in the circuit board bin, and the circuit board is fixed in the circuit board bin by the second buckles.

6. The glue-filling water meter assembly according to claim 1, characterized in that: The glue injection opening is a circular hole, and the diameter of the glue injection opening on the upper surface of the transparent cover plane part is larger than the diameter of the glue injection opening on the lower surface of the transparent cover plane part.

7. The glue-filled water meter assembly according to claim 1, characterized in that: The transparent cover at the position corresponding to the antenna protrudes outward to form a transparent cover protrusion, and a closed antenna cavity is formed between the glue and the transparent cover protrusion.

8. The glue-filling water meter assembly according to claim 7, characterized in that: The glue is arranged in a glue-filling cavity which is not higher than the height of the upper surface of the transparent cover plane portion.

9. A glue-filled water meter assembly according to any one of claims 1 to 5, characterized in that: The circuit board is fixedly connected to the circuit board bin by glue, and the transparent cover is fixedly connected to the circuit board bin by glue.

10. A glue-filling water meter assembly according to any one of claims 1 to 5, characterized in that: The antenna is electrically connected to the circuit board.

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