A water meter electronic digital display component, water meter head and water meter

Abstract

The present application discloses an electronic digital display component of a water meter, a water meter head and a water meter, and relates to the technical field of water meter manufacturing, including a PCB board, including a pin surface and a welding surface; a cover plate, abuttingly arranged on one side of the pin surface of the PCB board; a fixing frame, abuttingly arranged on one side of the welding surface of the PCB board, and a glue injection cavity is formed between the fixing frame and the welding surface; a battery compartment is formed on the side of the fixing frame away from the PCB board, and the fixing frame forms a connecting port connecting the battery compartment and the glue injection cavity; a battery component is arranged in the battery compartment; a fixing member, through which the cover plate, the PCB board and the fixing frame are fixedly connected; a sealing member, arranged on the fixing frame, the sealing member abuts and surrounds the welding surface; a fastening assembly, through which the cover plate, the PCB board and the fixing frame are fastened and connected. The present application can solve the problem of moisture by glue injection while reducing the phenomenon of flowery screen or black screen.

Description

Technical Field

[0001] The present application relates to the technical field of water meter manufacturing, and in particular to an electronic digital display component of a water meter, a water meter head and a water meter. Background Art

[0002] The ultrasonic water meter includes a digital display component with power supply and a meter head formed by the top shell, the middle PCB board, and the battery fixing frame at the bottom. During production, the digital display component is placed in the meter head cavity of the water meter, and the internal wires are passed through the meter head; then the interior is vacuumed and sealed, and then the wires are connected to the sensor. During installation, the sensor is placed inside the measured pipe to contact the fluid.

[0003] After a certain period of use, the existing ultrasonic water meter will gradually spread the measured liquid along the wire skin to the connection end of the wire and the PCB board, causing the corresponding joint of the PCB board to be damp and short-circuited, further causing damage to related electronic components and causing the display screen to go black. Therefore, when producing water meters, the inside of the meter head is filled with glue to isolate the circuit board to solve the problem of moisture.

[0004] However, after the entire meter head is filled with glue, the display screen may also have a color screen or a black screen. After investigation and analysis, after the entire meter head is filled with glue, the glue covers the PCB board and the display screen at the same time; when the glue solidifies, it will pull the pins connected to the PCB board, causing the pins to loosen, causing the display screen to have a color screen or a black screen. Therefore, how to solve the moisture problem by filling the glue while reducing the color screen or the black screen phenomenon has become a technical problem that needs to be solved urgently. Utility Model Content

[0005] In order to solve the moisture problem by glue filling and reduce the phenomenon of screen distortion or black screen, the present application provides a water meter electronic digital display component, a water meter head and a water meter.

[0006] In a first aspect, the present application provides a water meter electronic digital display component and a water meter thereof, which adopts the following technical solution:

[0007] A water meter electronic digital display component, comprising

[0008] PCB board, including pin side and soldering side;

[0009] A cover plate, disposed against one side of the pin surface of the PCB board;

[0010] A fixing frame is disposed abutting against one side of the welding surface of the PCB board, and a glue filling cavity is formed between the fixing frame and the welding surface;

[0011] A battery compartment is formed on one side of the fixing frame away from the PCB board, and a connecting port connecting the battery compartment and the glue filling cavity is formed on the fixing frame;

[0012] A battery component is disposed in the battery compartment;

[0013] A fixing member, through which the cover plate, the PCB board and the fixing frame are fixedly connected;

[0014] A sealing member is arranged on the fixing frame, and the sealing member abuts against and surrounds the welding surface.

[0015] By adopting the above technical solution, the PCB board, the cover plate and the fixing frame are fastened together by the fixing parts, and a glue filling cavity is formed between the fixing frame and the PCB board. At the same time, a sealing member is provided between the fixing frame and the PCB board to reduce the possibility of glue overflow in the glue filling cavity and reduce the glue filling amount. When filling the glue, the glue is poured into the glue filling cavity, and the glue is in contact with the welding surface of the PCB board. On the one hand, the moisture problem can be solved by filling the glue, and on the other hand, the phenomenon of pulling the display screen on the PCB board when the glue solidifies, resulting in a flowery screen or a black screen, is greatly reduced.

[0016] Optionally, the fixing member includes a fixing screw;

[0017] The fixing screw is passed through the cover plate and the PCB board, and the fixing screw is threadedly connected to the fixing frame.

[0018] By adopting the above technical solution, fixing screws are used as fixing parts, which can also achieve a stable connection between the cover plate, PCB board and the fixing frame, providing good fixing support for the electronic digital display components of the water meter.

[0019] Optionally, a limiting groove is formed on the outer peripheral side of the PCB board, the cover plate is provided with a bearing block that is inserted into the limiting groove, and the fixing screw is passed through the bearing block.

[0020] By adopting the above technical solution, the limiting groove on the outer peripheral side of the PCB board cooperates with the bearing block of the cover plate, so that the fixing screws can be accurately and firmly penetrated and connected, thereby improving the accuracy and stability of installation.

[0021] Optionally, a side of the bearing block facing away from the cover plate is flush with a side of the PCB board facing away from the cover plate.

[0022] By adopting the above technical solution, the thickness design of the bearing block ensures a close fit between the PCB board and the cover plate, further enhancing the waterproof performance.

[0023] Optionally, the sealing member includes a sealing ring, and a sealing groove is formed circumferentially on one side of the fixing frame close to the PCB board, the sealing ring is inserted into the sealing groove, and the sealing ring abuts against the welding surface and the supporting block.

[0024] By adopting the above technical solution, the sealing ring is used as a sealing member, which can effectively reduce the possibility of glue overflowing from the glue filling cavity.

[0025] Optionally, the fixing frame is provided with a supporting frame located in the battery compartment and used for supporting the battery component.

[0026] By adopting the above technical solution, the design of the support frame provides support for the battery components, facilitating the stable placement and replacement of the battery components. At the same time, the design also optimizes the internal structure layout of the electronic digital display components of the water meter.

[0027] Optionally, the fixing frame is formed with a locking cavity for the battery component to be locked in, and the locking cavity is located on the peripheral cavity wall of the battery compartment and is connected.

[0028] By adopting the above technical solution, the arrangement of the clamping cavity enables the battery component to be conveniently clamped and fixed in the battery compartment, thereby improving the convenience and stability of the battery component installation. At the same time, the design also helps to reduce the possibility of the battery component falling off or shifting under vibration or impact.

[0029] Optionally, it further includes a fastening screw and a fastening nut, wherein the fastening screw is passed through the cover plate, the PCB board and the fixing frame;

[0030] The fastening nut is threadedly connected with the fastening screw.

[0031] By adopting the above technical solution, the fastening screws and the fastening nuts cooperate with each other, which can improve the tightness of the connection between the cover plate, the PCB board and the fixing frame, and reduce the possibility of leakage during glue filling.

[0032] In a second aspect, the present application provides a water meter head, which adopts the following technical solution:

[0033] A water meter head, comprising

[0034] The shell is formed with an installation cavity, the water meter electronic digital display component is installed in the installation cavity, the water meter electronic digital display component also includes connecting screws, and the water meter electronic digital display component is connected and fixed to the shell through the connecting screws.

[0035] By adopting the above technical solution, the water meter head using the above water meter electronic digital display component has a compact structure, stable performance and good moisture resistance. At the same time, the glue is poured into the glue filling cavity, which greatly reduces the phenomenon of pulling the electronic components on the PCB board when the glue solidifies, resulting in a flowery screen or a black screen.

[0036] In a third aspect, the present application provides a water meter, which adopts the following technical solution:

[0037] A water meter, comprising:

[0038] The water meter case is installed at the middle position of the top of the water meter case, and the cover plate is located on the side facing away from the water meter case.

[0039] By adopting the above technical solution, the water meter using the above water meter head has good moisture-proof performance, which greatly improves the service life of the water meter.

[0040] In summary, the present application includes at least one of the following beneficial effects:

[0041] 1. A glue filling cavity is formed between the fixing frame and the PCB board, and a sealant is provided between the fixing frame and the PCB board to reduce the possibility of glue overflow in the glue filling cavity and the amount of glue filling. When filling glue, the glue contacts the welding surface of the PCB board. On the one hand, the moisture problem can be solved by filling glue, and on the other hand, the phenomenon of pulling the electronic components on the PCB board when the glue solidifies, resulting in a flowery screen or a black screen, is greatly reduced;

[0042] 2. The setting of the clamping cavity allows the battery to be easily inserted and fixed in the battery compartment, which improves the convenience and stability of battery installation. At the same time, this design also helps to reduce the possibility of battery falling off or shifting under vibration or impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the overall structure of the electronic digital display component of the water meter in the embodiment of the present application;

[0044] Figure 2 is an exploded schematic diagram of an embodiment of the present application;

[0045] Figure 3 is a schematic diagram of the state of the battery component when it is installed in the embodiment of the present application;

[0046] Figure 4 is a schematic diagram of the connection structure between the sealing ring and the fixing frame in an embodiment of the present application;

[0047] Figure 5 It is an exploded schematic diagram of a water meter head in an embodiment of the present application;

[0048] Figure 6 It is a schematic diagram of the overall structure of the water meter in the embodiment of the present application.

[0049] Figure numerals: 1. PCB board; 11. Pin surface; 12. Welding surface; 13. Limiting groove; 2. Cover plate; 21. Carrying block; 3. Fixing frame; 31. Glue filling cavity; 32. Battery compartment; 33. Connecting port; 34. Sealing groove; 35. Sealing ring; 36. Support frame; 37. Positioning cavity; 4. Battery component; 5. Water meter case; 6. Fastening screw; 61. Fastening nut; 7. Fixing screw; 8. Housing; 81. Installation cavity; 9. Connecting screw. DETAILED DESCRIPTION

[0050] The following is combined with Figure 1-6 This application is described in further detail.

[0051] The embodiments of the present application disclose a water meter electronic digital display component, a water meter head and a water meter.

[0052] See also Figure 1 and Figure 2 The electronic digital display component of the water meter includes a PCB board 1, a cover plate 2, a fixing frame 3 and a battery component 4. The PCB board 1 includes a pin surface 11 and a welding surface 12. Electronic components such as capacitors, resistors, and display screens are installed on the pin surface 11 of the PCB board 1, and the ends of the pins are located on the welding surface 12. At this time, the pins of the electronic components are soldered on the welding surface 12 to form solder joints; and according to design requirements, some electronic components can be located on the welding surface 12, and the ends of their pins are located on the pin surface, and are soldered on the pin surface 11 to form solder joints.

[0053] The cover plate 2 is installed on one side of the pin surface 11 of the PCB board 1 and abuts against each other, and the cover plate 2 forms a cavity adapted to accommodate and contain electronic components on the side facing the PCB board 1. When the cover plate 2 is installed and abuts against the pin surface 11 of the PCB board 1, electronic components such as the display screen are contained in the cavity. In the drawings of the specification of this application, the specific installation layout of the electronic components on the PCB board 1 is not shown, and the window on the cover plate 2 that displays the electronic components of the display screen of the PCB board 1 is fixed with a glass sheet, a transparent plastic sheet, etc., so that a sealing structure is formed between the cover plate 2 and the PCB board 1.

[0054] See also Figure 3 and Figure 4 The fixing frame 3 is installed on one side of the welding surface 12 of the PCB board 1, and a glue filling cavity 31 is formed between the fixing frame 3 and the PCB board 1. The electronic components and solder joints on the welding surface 12 are respectively located in the glue filling cavity 31. The electronic digital display component of the water meter also includes a fixing member, which includes a fixing screw 7. The fixing screw 7 is penetrated through the cover plate 2 and the PCB board 1, and the fixing screw 7 is threadedly connected to the fixing frame 3. When in use, the fixing screw 7 is threadedly connected to the fixing frame 3, so that the PCB board 1, the cover plate 2 and the fixing frame 3 are tightly connected.

[0055] In order to facilitate the installation of the PCB board 1, a plurality of limiting grooves 13 are formed along the circumferential direction on the outer peripheral side of the PCB board 1. When the PCB board 1 is installed, the limiting installation is achieved through the limiting grooves 13. Therefore, in order to make full use of the space on the PCB board 1, a bearing block 21 is fixedly connected to the cover plate 2, and the bearing block 21 is inserted into the limiting groove 13. When the fixing frame 3, the PCB board 1 and the cover plate 2 are installed, the side of the bearing block 21 facing away from the cover plate 2 is flush with the side of the PCB board 1 facing away from the cover plate 2. The fixing screw 7 is passed through the bearing block 21 and then threadedly connected to the fixing frame 3. The bearing block 21 provides a carrier for the fixing screw 7, so that the PCB board 1 is fully utilized.

[0056] The electronic digital display component of the water meter also includes a seal, which includes a sealing ring 35. A sealing groove 34 is formed along the circumference of the fixing frame 3 near the side of the PCB board 1, and the sealing groove 34 corresponds to the edge position of the PCB board 1, and the sealing groove 34 surrounds the glue filling cavity 31. The sealing ring 35 is inserted into the sealing groove 34. When the fixing frame 3 abuts against the welding surface 12 of the PCB board 1, the sealing ring 35 abuts against the welding surface 12 and the groove wall of the sealing groove 34 respectively, and the sealing ring 35 passing through the limiting groove 13 abuts against the side of the bearing block 21 facing away from the cover plate 2, so as to achieve the sealing between the fixing frame 3 and the PCB board 1, and reduce the possibility of the glue in the glue filling cavity 31 overflowing from the gap between the fixing frame 3 and the PCB board 1.

[0057] See also Figure 2 A battery compartment 32 is formed on the side of the fixing frame 3 facing away from the PCB board 1. The battery component 4 is a battery. In the embodiment of the present application, the battery component 4 is a lithium battery and there are two of them. The battery component 4 is installed in the battery compartment 32. The fixing frame 3 is fixedly connected with a support frame 36. The support frame 36 is located on the side of the battery compartment 32 facing away from the PCB board 1. A receiving groove is formed on the support frame 36. When the battery component 4 is installed, the battery component 4 is received in the receiving groove to limit the position of the battery component 4, and the battery component 4 is supported by the support frame 36 to facilitate the installation of the battery component 4.

[0058] See also Figure 3 The fixing frame 3 is provided with a clamping cavity 37, which forms the side wall of the battery compartment 32. There are two clamping cavities 37 and they are symmetrically arranged. The clamping cavity 37 is connected to the battery compartment 32. When two battery components 4 are installed in the battery compartment 32, the opposite parts of the two battery components 4 are clamped into the clamping cavity 37, and the two ends of the battery component 4 are respectively abutted against the cavity wall of the clamping cavity 37, which is used to limit the shaking of the battery component 4 and improve the installation stability of the battery component 4.

[0059] See also Figure 3 and Figure 4The fixing frame 3 is formed with a connecting port 33, which is symmetrically arranged and connected to the battery compartment 32 and the glue injection cavity 31. The connecting port 33 is directly opposite to the two ends of the battery component 4. The PCB board 1 is electrically connected with a transmission wire, which corresponds to the positive and negative electrodes of the battery component 4. The transmission wire passes through the connecting port 33 and extends into the battery compartment 32, and is correspondingly connected to the positive and negative electrodes of the battery component 4. The specific setting of the transmission wire in the implementation of this application is the prior art and is not shown in the drawings of the specification.

[0060] The electronic digital display component of the water meter also includes a fastening assembly, which includes a fastening screw 6 and a fastening nut 61. The fastening screw 6 is inserted through the cover plate 2, the fixing frame 3 and the PCB board 1. The fastening nut 61 is threadedly connected to the fastening screw 6, further improving the connection and fastening degree between the cover plate 2, the PCB board 1 and the fixing frame 3, and reducing the possibility of glue overflow. In other implementations, the fastening assembly can also adopt other structural forms, such as buckles.

[0061] When the battery component 4 is installed, glue is poured into the battery compartment 32, and then the glue flows into and fills the glue filling cavity 31 through the connecting port 33. The glue in the battery compartment 32 covers part of the battery component 4 in the battery compartment 32, and the covered part is less than or equal to one third. When the glue solidifies, it can not only fix the battery component 4, but also reduce the fixing parts of the additional battery component 4. At the same time, the battery component 4 can squeeze the space where glue needs to be poured, further reducing the amount of glue poured.

[0062] The implementation principle of the electronic digital display component of a water meter in the embodiment of the present application is:

[0063] When assembling the electronic digital display components of the water meter, first connect the cover plate 2 and the fixing frame 3 connected with the sealing ring 35 to the PCB board 1, and then fix them with the fixing screws 7; then use the fastening screws 6 and the fastening nuts 61 to further improve the fastening degree between the cover plate 2, the fixing frame 3 and the PCB board 1; then install the battery component 4 and inject glue, and complete the assembly after the glue solidifies. At this time, the PCB board 1 reduces the possibility of moisture through the solidified glue; at the same time, the glue is on the side of the welding surface 12 of the PCB board 1, which greatly reduces the possibility of the pins of the display screen on the pin surface 11 being pulled during the glue solidification process, resulting in a black screen or a flowery screen.

[0064] See also Figure 5 In the second aspect, the present application discloses a water meter head, which includes a housing 8, and the housing 8 is arranged on a side of the fixing frame 3 away from the PCB board 1. An installation cavity 81 is formed in the housing 8, and the electronic digital display component of the water meter is installed in the installation cavity 81.

[0065] The electronic digital display component of the water meter also includes a connecting screw 9, which is used to fasten the screw 6 (fastening screw 6 is in the Figure 3) and the fastening nut 61 (the fastening nut 61 is Figure 3 After the cover plate 2, the PCB board 1 and the fixing frame 3 are removed, the connecting screws 9 are installed in the positions where the fastening screws 6 are installed. The housing 8 is formed with thread grooves, and the thread grooves correspond to the connecting screws 9 one by one. After the glue is poured and solidified, the connecting screws 9 are threadedly connected to the wall of the thread groove to achieve the connection and fixation between the housing 8 and the cover plate 2, the PCB board 1 and the fixing frame 3.

[0066] See also Figure 5 and Figure 6 In a third aspect, the present application discloses a water meter, which further comprises a water meter case 5, a housing 8 is mounted at the middle position of the top of the water meter case 5, and a cover plate 2 is located on the side facing away from the water meter case 5. A transducer is mounted and fixed on the water meter case 5, and the transducer is electrically connected to the PCB board 1. When the transducer is in operation, the water flow is measured and counted, and the result is displayed through the display screen electronic components on the PCB board 1.

[0067] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A water meter electronic digital display component, characterized in that: include A PCB board (1), comprising a pin surface (11) and a welding surface (12); A cover plate (2) disposed in contact with one side of the pin surface (11) of the PCB board (1); A fixing frame (3) is disposed in contact with one side of the welding surface (12) of the PCB board (1), and a glue injection cavity (31) is formed between the fixing frame (3) and the welding surface (12); A battery compartment (32) is formed on a side of the fixing frame (3) away from the PCB board (1), and a connecting port (33) connecting the battery compartment (32) and the glue filling cavity (31) is formed on the fixing frame (3); A battery component (4) is arranged in the battery compartment (32); A fixing member, wherein the cover plate (2), the PCB board (1) and the fixing frame (3) are fixedly connected with each other via the fixing member; A sealing member is arranged on the fixing frame (3), and the sealing member abuts against and surrounds the welding surface (12).

2. The electronic digital display component of a water meter according to claim 1, characterized in that: The fixing member comprises a fixing screw (7); The fixing screw (7) is passed through the cover plate (2) and the PCB board (1), and the fixing screw (7) is threadedly connected to the fixing frame (3).

3. The electronic digital display component of a water meter according to claim 2, characterized in that: A limiting groove (13) is formed on the outer peripheral side of the PCB board (1); the cover plate (2) is provided with a bearing block (21) that is inserted into the limiting groove (13); and the fixing screw (7) is passed through the bearing block (21).

4. The electronic digital display component of a water meter according to claim 3, characterized in that: The side of the bearing block (21) facing away from the cover plate (2) is flush with the side of the PCB board (1) facing away from the cover plate (2).

5. The electronic digital display component of a water meter according to claim 1, characterized in that: The sealing member comprises a sealing ring (35); a sealing groove (34) is formed along the circumferential direction on one side of the fixing frame (3) close to the PCB board (1); the sealing ring (35) is inserted into the sealing groove (34); and the sealing ring (35) abuts against the welding surface (12).

6. The electronic digital display component of a water meter according to claim 1, characterized in that: The fixing frame (3) is provided with a supporting frame (36) located in the battery compartment (32) and used for supporting the battery component (4).

7. The electronic digital display component of a water meter according to claim 1, characterized in that: The fixing frame (3) is formed with a locking cavity (37) for the battery component (4) to be locked in, and the locking cavity (37) is located on the peripheral cavity wall of the battery compartment (32) and is in communication with each other.

8. A water meter electronic digital display component according to any one of claims 1 to 7, characterized in that: It also includes a fastening screw (6) and a fastening nut (61), wherein the fastening screw (6) is inserted through the cover plate (2), the PCB board (1) and the fixing frame (3); The fastening nut (61) is threadedly connected to the fastening screw (6).

9. A water meter head, using a water meter electronic digital display component as claimed in any one of claims 1 to 7, characterized in that: include A housing (8), wherein the housing (8) is formed with a mounting cavity (81), wherein the water meter electronic digital display component is mounted in the mounting cavity (81), and wherein the water meter electronic digital display component further comprises a connecting screw (9), wherein the water meter electronic digital display component is connected and fixed to the housing (8) via the connecting screw (9).

10. A water meter, using a water meter head as claimed in claim 9, characterized in that: include A water meter case (5), wherein the water meter head is installed at the middle position of the top of the water meter case (5), and the cover plate (2) is located on the side facing away from the water meter case (5).

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