Removable housing for adapting a non-magnetic water meter

Abstract

This utility model discloses a detachable casing adapted for non-magnetic water meters. The circuit board casing includes an upper shell, a lower shell, and a battery compartment. The upper shell is detachably mounted over the lower shell, and the lower shell is detachably snapped onto the top of the water meter casing. A power connection hole is provided on the side wall of the circuit board casing, and a power cable hole is provided in the battery compartment. When the circuit board installed inside the circuit board casing is connected to mains power, the mains power line is connected through the power connection hole. When the circuit board is powered by a battery, the battery compartment is detachably and fixedly installed on the outer side wall of the circuit board casing, with the power connection hole facing the power cable hole. This utility model's circuit board casing allows for flexible disassembly for circuit board maintenance. The entire circuit board casing can also be removed from the water meter casing and replaced without affecting the normal operation of the water meter. Furthermore, depending on actual needs, the battery compartment can be installed for power supply, or the power can be directly connected to mains power through the power connection hole, reducing the operating cost of the non-magnetic water meter.

Description

Technical Field

[0001] This utility model relates to the field of water meter components, and more specifically, to a detachable housing adapted for non-magnetic water meters. Background Technology

[0002] With the popularization of smart water management, non-magnetic water meters are widely used due to their high accuracy and anti-interference characteristics. Existing non-magnetic water meter casings mostly adopt an integrated or semi-enclosed design, which mainly presents the following technical problems: 1. Insufficient maintenance convenience: Traditional casings are fixed with bolts or glue, requiring special tools for disassembly. This means that repairing or replacing components such as circuit boards and batteries requires complete disassembly of the water meter, which is time-consuming, labor-intensive, and costly. For example, replacing the battery in a battery-powered NB-IoT water meter requires complete disassembly of the casing, damaging the sealing structure and increasing the risk of leakage. 2. Limited power supply: Existing casings only support a single power supply mode (such as battery power or wired power), which cannot adapt to diverse scenario requirements. Industrial scenarios require stable wired power (such as the M-BUS interface), while remote areas or mobile scenarios rely on battery power. A single power supply structure necessitates a customized design for the water meter, increasing production and inventory costs. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a detachable shell adapted to non-magnetic water meters. The basic concept of the technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows:

[0004] A detachable housing for non-magnetic water meters includes a water meter housing and a circuit board housing. The circuit board housing includes an upper shell, a lower shell, and a battery compartment. The upper shell is detachably covered by the lower shell, forming a circuit board mounting cavity between the upper and lower shells. The lower shell is detachably fixed to the top of the water meter housing. A power connection hole is provided on the side wall of the circuit board housing, and a power cable hole is provided in the battery compartment. When the circuit board installed inside the circuit board housing is connected to AC power, the AC power line is connected through the power connection hole. When the circuit board installed inside the circuit board housing is powered by a battery, the battery compartment is detachably fixed to the outer side wall of the circuit board housing, with the power connection hole facing the power cable hole.

[0005] Preferably, the bottom of the battery compartment has a battery mounting hole, and a battery cover is detachably provided on the battery mounting hole.

[0006] Preferably, the top wall of the water meter casing is provided with a first positioning boss protruding upwards, and the bottom of the lower casing is recessed upwards to form a first positioning groove that matches the shape and size of the positioning boss, and the first positioning boss is inserted into the first positioning groove.

[0007] Preferably, the top wall of the water meter casing is provided with a second positioning boss in addition to the first positioning boss, and the bottom of the lower casing is recessed upwards at the position opposite to the second positioning boss to form a second positioning groove that matches the shape and size of the second positioning boss, and the second positioning boss is inserted into the second positioning groove.

[0008] Preferably, the top of the water meter casing has a locking protrusion, one side wall of the locking protrusion is recessed inward to form a locking notch, and the bottom of the lower casing is recessed upward to form a locking groove opposite the locking protrusion. The locking protrusion is inserted into the locking groove, and the inner side wall of the locking groove opposite the locking notch has a first hook protruding towards the locking notch. The first hook deforms beyond the top wall of the locking protrusion and is locked inside the top wall of the locking notch.

[0009] The detachable housing for the non-magnetic water meter also includes a wired cover. The wired cover includes a main body and two wired cover arms. A power cable hole is provided in the middle of the main body. The two wired cover arms extend inward from the inner sidewall of the main body on both sides of the power cable hole. The sidewall of the circuit board housing is recessed inward from the periphery of the power connection hole to form a mounting notch. Mounting holes penetrating the circuit board housing are provided in the mounting notch on both sides of the power connection hole. The outer sidewall of the battery compartment has protruding compartment arms on both sides of the compartment power cable hole. When the circuit board installed in the circuit board housing is connected to AC power, the two wired cover arms are inserted into the mounting holes and fixed to the sidewall of the circuit board housing. The main body is accommodated in the mounting notch, and the power connection hole is directly opposite the power cable hole. When the circuit board installed in the circuit board housing is powered by a battery, the compartment arms are inserted into the mounting holes and fixed to the sidewall of the circuit board housing.

[0010] Preferably, the inner sidewall of the circuit board housing has a card insertion boss protruding inward from the periphery of the mounting hole, and the free end of the wire cover insertion arm protrudes a second hook towards the power connection hole. When the circuit board installed inside the circuit board housing is connected to the mains power, the two wire cover insertion arms are respectively inserted into the mounting hole, and the second hook deforms beyond the mounting hole and is locked outside the card insertion boss.

[0011] Preferably, the detachable housing for the non-magnetic water meter further includes fixing screws. The top of the insert protrusion has a fixing hole that runs vertically and extends through to the mounting hole. The top of the tank arm has a fixing screw hole that extends vertically through itself. When the circuit board installed inside the circuit board housing is powered by a battery, the tank arms are respectively inserted into the mounting holes. The fixing holes are directly opposite the fixing screw holes. The fixing screws are inserted through the fixing holes and screwed into the fixing screw holes.

[0012] Preferably, the top of the free ends of the two compartment arms are respectively provided with sub-positioning slots that extend horizontally through the compartment arms. The two sub-positioning slots face each other to form positioning slots. The top of the upper shell is provided with a positioning block that protrudes downwards from the positioning slot. The positioning block is inserted into the positioning slot.

[0013] Compared with the prior art, the circuit board housing of this utility model can be flexibly disassembled for inspection and maintenance. The entire circuit board housing can also be removed from the water meter housing and replaced without affecting the normal use of the water meter. At the same time, a battery compartment can be installed as needed, and the battery in the battery compartment can then power the circuit board. Alternatively, the battery compartment can be removed and connected to the mains power line through the power terminal to power the circuit board, reducing the operating cost of the non-magnetic meter.

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0016] Figure 1 This is a structural diagram of the first angle of the battery-powered embodiment of this utility model;

[0017] Figure 2 for Figure 1 Exploded view;

[0018] Figure 3 A partial exploded view from a second angle of the battery-powered embodiment of this utility model;

[0019] Figure 4 An exploded view from a second angle of the battery-powered embodiment of this utility model;

[0020] Figure 5An exploded view from the third angle of the battery-powered embodiment of this utility model;

[0021] Figure 6 This is a structural diagram of the first angle of the mains power supply embodiment of this utility model;

[0022] Figure 7 for Figure 6 Exploded view;

[0023] Figure 8 This is a partial exploded view from the second angle of the mains power supply embodiment of this utility model;

[0024] Figure 9 This is an exploded view from the second angle of the mains power supply embodiment of this utility model.

[0025] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0027] refer to Figures 1 to 9 This utility model relates to a detachable housing for a non-magnetic water meter, comprising a water meter housing 1 and a circuit board housing 2. The circuit board housing 2 includes an upper shell 21, a lower shell 22, and a battery compartment 23. The upper shell 21 is detachably and sealingly covered by the lower shell 22, forming a circuit board mounting cavity between the upper shell 21 and the lower shell 22. The lower shell 22 is detachably and fixedly attached to the top of the water meter housing 1. A power connection hole 24 is provided on the side wall of the circuit board housing 2, and a power cable hole 231 is provided in the battery compartment 23. When the circuit board installed in the circuit board housing 2 is connected to mains power, the mains power line is connected through the power connection hole 24. When the circuit board installed in the circuit board housing 2 is powered by a battery, the battery compartment 23 is detachably and fixedly installed on the outer side wall of the circuit board housing 2, with the power connection hole 24 facing the power cable hole 231. A battery mounting hole 232 is provided at the bottom of the battery compartment 23, and a battery cover 233 is detachably provided over the battery mounting hole 232. In this embodiment, a ring 2331 protrudes upward from the top periphery of the battery cover 233. The outer side wall of the ring 2331 is tapped with a male thread, and the inner side wall of the battery mounting hole 232 is tapped with a female thread. The ring 2331 is screwed into the battery mounting hole 232, thereby covering the battery cover 233 on the battery mounting hole 232.

[0028] Specifically, the top wall of the water meter housing 1 has a first positioning boss 12 protruding upwards, and the bottom of the lower housing 22 is recessed upwards to form a first positioning groove 222 that matches the shape and size of the positioning boss 12. The first positioning boss 12 is inserted into the first positioning groove 222. The top wall of the water meter housing 1 also has a second positioning boss 13 protruding beyond the first positioning boss 12. The bottom of the lower housing 22 is recessed upwards opposite the second positioning boss 13 to form a second positioning groove 223 that matches the shape and size of the second positioning boss 13. The second positioning boss 13 is inserted into the second positioning groove 223. The top of the water meter casing 1 has a mounting protrusion 14 protruding upwards. One side wall of the mounting protrusion 14 is recessed inwards to form a mounting notch 141. The bottom of the lower casing 22 is recessed upwards opposite the mounting protrusion 14 to form a mounting groove 224. The mounting protrusion 14 is inserted into the mounting groove 224. The mounting groove 224 has a first hook 225 protruding from the inner side wall of the mounting notch 141 opposite to the mounting notch 141. The first hook 225 deforms beyond the top wall of the mounting protrusion 14 and is engaged with the inner side of the top wall of the mounting notch 141. In this embodiment, the first positioning protrusion 12 and the first positioning groove 222 are both hexagonal, and the second positioning protrusion 13 and the second positioning groove 223 are both circular.

[0029] Specifically, this utility model also includes a first fixing screw (not shown) and a second fixing screw (not shown). The lower edge of the upper shell 21 is sealed and fitted outside the upper edge of the lower shell 22. The bottom of the upper shell 21 has a first upper docking post 212 protruding downwards, and the top of the lower shell 22 has a first lower docking post 224 protruding upwards opposite the upper docking post 212. The upper shell 21 has a first upper fixing through hole 213 that passes through the first upper docking post 212 and the upper shell 21. The first lower docking post 224 has a first lower fixing screw hole 2241. The first fixing screw (not shown) passes through the first upper fixing through hole 213 and is screwed into the first lower fixing screw hole 2241. The bottom of the first upper docking post 212 is sealed and connected to the top of the first lower docking post 224. The top of the lower shell 22 has a second fixing screw protruding upwards corresponding to the first positioning groove 222. The lower connecting post 225 is provided. The lower shell 22 has a lower fixing through hole 226 that passes through the lower connecting post 225 vertically. The lower end of the lower fixing through hole 226 is connected to the first positioning groove 222. The first positioning boss 12 has a case fixing screw hole 121 opposite to the lower fixing through hole 226. The bottom of the upper shell 21 has a second upper connecting post 214 opposite to the lower connecting post 225. The upper shell 21 has a second upper fixing through hole 215 that passes through the second upper connecting post 214 vertically and the upper shell 21. A second fixing screw (not shown) passes through the second upper fixing through hole 215 and the lower fixing through hole 226 in sequence and is screwed into the case fixing screw hole 121. The bottom of the second upper connecting post 214 is sealed to the top of the second lower connecting post 225. The lower end of the housing fixing screw hole 121 does not penetrate the top of the water meter housing 1, and the lower end of the first lower fixing screw hole 2241 does not penetrate the bottom of the lower housing 22.

[0030] Preferably, the detachable housing for the non-magnetic water meter further includes a wired cover 3. The wired cover 3 includes a cover body 31 and two cover insert arms 32. A power cable hole 311 is formed in the center of the cover body 31. The two cover insert arms 32 extend inward from the inner sidewall of the cover body 31 on both sides of the power cable hole 311. The sidewall of the circuit board housing 2 is recessed inward from the periphery of the power connection hole 24 to form a mounting notch 25. Mounting holes 26 penetrating the circuit board housing 2 are formed on both sides of the power connection hole 24 within the mounting notch 25. The outer wall of the battery compartment 23 has compartment insert arms 234 protruding on both sides of the power cable hole 231. When the circuit board installed inside the circuit board housing 2 is connected to mains power, the two cable cover insert arms 32 are respectively inserted into the mounting holes 26 and fixed to the side wall of the circuit board housing 2. The cable cover body 31 is accommodated in the mounting notch 25. The power connection hole 24 is directly opposite the cable cover power cable hole 311. When the circuit board installed inside the circuit board housing 2 is powered by a battery, the compartment insert arms 234 are respectively inserted into the mounting holes 26 and fixed to the side wall of the circuit board housing 2. In this embodiment, the mounting holes 26 and the power connection holes 24 are both located on the side wall of the lower shell 22. The thickness of the cable cover body 31 is the same as the depth of the mounting notch 25. The shape and size of the cable cover body 31 are the same as the shape and size of the mounting notch 25.

[0031] Specifically, the inner sidewall of the circuit board housing 2 has a card insertion boss 27 protruding inward from the periphery of the mounting hole 26. The free end of the wire cover arm 32 protrudes towards the power connection hole 24 with a second hook 321. The distance between the inner sidewalls of the two mounting holes 26 near the power connection hole 24 is the same as the distance between the sidewalls of the two wire cover arms 32 near the power connection hole 24. When the circuit board installed inside the circuit board housing 2 is connected to mains power, the two wire cover arms 32 are respectively inserted into the mounting holes 26, and the second hook 321 deforms beyond the mounting holes 26 and is engaged outside the card insertion boss 27. In this embodiment, the card insertion boss 27 protrudes from the inner sidewall of the lower housing 22. The detachable housing for the non-magnetic water meter also includes fixing screws. The top of the insert protrusion 27 has a fixing hole (271) that runs vertically and extends through to the mounting hole 26. The top of the tank body insert arm 234 has a fixing screw hole 2341 that runs vertically through itself. When the circuit board installed in the circuit board housing 2 is powered by a battery, the tank body insert arms 234 are respectively inserted into the mounting hole 26. The fixing hole 271 is directly opposite the fixing screw hole 2341. The fixing screw is inserted through the fixing hole 271 and screwed into the fixing screw hole 2341.

[0032] Preferably, the top of the free ends of the two compartment arms 234 are respectively provided with sub-positioning through slots 2342 that extend horizontally through the compartment arms 234. The two sub-positioning through slots 2342 face each other to form positioning slots 235. The top of the upper shell 21 is provided with a positioning block 211 that protrudes downward from the positioning slot 235. The positioning block 211 is inserted into the positioning slot 235.

[0033] In use, the circuit board is installed inside the circuit board housing 2. When the circuit board is connected to mains power, the wire cover 3 is placed inside the mounting slot 25, allowing the mains power line to pass through the power cable hole 311 and power connector hole 24 of the wire cover and connect to the circuit board. When the circuit board installed inside the circuit board housing 2 is powered by a battery, the battery compartment 23 is installed on the side wall of the circuit board housing 2, the battery is installed, and the two battery terminals are passed through the power cable hole 231 and power connector hole 24 of the compartment and connect to the circuit board. When the circuit board needs to be repaired, the power cable is disconnected, the upper shell 21 of the circuit board housing 2 is opened, and the repair is performed. After the repair is completed, the power cable is reconnected and the upper shell 21 is closed. If the circuit board housing 2 is damaged and unusable, it can be removed and replaced with a new one; the water meter does not need to be disassembled. When the non-magnetic water meter of this utility model is in operation, when the synchronous sensing pointer inside the water meter casing 1 rotates, the inductance of the four coils of the non-magnetic sensor in the circuit board changes. The microcontroller detects the change in coil inductance, performs logic processing to generate a pulse counting signal, accumulates the water meter reading, and completes the data upload through the metering communication module.

[0034] The circuit board housing of this utility model can be flexibly disassembled for inspection and maintenance. The entire circuit board housing can also be removed from the water meter housing and replaced without affecting the normal use of the water meter. At the same time, a battery compartment can be installed as needed, and the battery in the battery compartment can then power the circuit board. Alternatively, the battery compartment can be removed and connected to the mains power line through the power terminal to power the circuit board, reducing the operating cost of the non-magnetic meter.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A detachable housing adapted for non-magnetic water meters, characterized in that: The device includes a water meter housing (1) and a circuit board housing (2). The circuit board housing (2) includes an upper shell (21), a lower shell (22), and a battery compartment (23). The upper shell (21) is detachably covered by the lower shell (22). A circuit board mounting cavity is formed between the upper shell (21) and the lower shell (22). The lower shell (22) is detachably fixed to the top of the water meter housing (1). A power connection hole (24) is provided on the side wall of the circuit board housing (2). A battery compartment (23) is provided with a compartment power line hole (231). When the circuit board installed in the circuit board housing (2) is connected to the mains power, the mains power line is connected through the power connection hole (24). When the circuit board installed in the circuit board housing (2) is powered by a battery, the battery compartment (23) is detachably fixed to the outer side wall of the circuit board housing (2). The power connection hole (24) is directly opposite the compartment power line hole (231).

2. The detachable housing for adapting to a non-magnetic water meter according to claim 1, characterized in that: The bottom of the battery compartment (23) is provided with a battery mounting hole (232), and a battery cover (233) is detachably provided on the battery mounting hole (232).

3. The detachable housing for adapting to a non-magnetic water meter according to claim 1, characterized in that: The top wall of the water meter casing (1) is provided with a first positioning boss (12) protruding upwards, and the bottom of the lower casing (22) is recessed upwards to form a first positioning groove (222) that matches the shape and size of the first positioning boss (12). The first positioning boss (12) is inserted into the first positioning groove (222).

4. The detachable housing for adapting to a non-magnetic water meter according to claim 3, characterized in that: The top wall of the water meter housing (1) is provided with a second positioning boss (13) in addition to the first positioning boss (12). The bottom of the lower housing (22) is recessed upwards at the position opposite to the second positioning boss (13) to form a second positioning groove (223) that matches the shape and size of the second positioning boss (13). The second positioning boss (13) is inserted into the second positioning groove (223).

5. The detachable housing for adapting to a non-magnetic water meter according to claim 1, characterized in that: The top of the water meter casing (1) is provided with a locking protrusion (14), and one side wall of the locking protrusion (14) is recessed inward to form a locking notch (141). The bottom of the lower casing (22) is recessed inward to form a locking groove (224) opposite to the locking protrusion (14). The locking protrusion (14) is inserted into the locking groove (224). The inner side wall of the locking groove (224) opposite to the locking notch (141) is provided with a first hook (225). The first hook (225) deforms beyond the top wall of the locking protrusion (14) and is locked inside the top wall of the locking notch (141).

6. The detachable housing for adapting to a non-magnetic water meter according to claim 1, characterized in that: It also includes a wired cover (3), which includes a wired cover body (31) and two wired cover insert arms (32). A wired cover power cable hole (311) is opened in the middle of the wired cover body (31). The two wired cover insert arms (32) extend inward from the inner sidewall of the wired cover body (31) on both sides of the wired cover power cable hole (311). The sidewall of the circuit board housing (2) is recessed inward from the periphery of the power connection hole (24) to form a mounting notch (25). Mounting holes (26) penetrating the circuit board housing (2) are opened in the mounting notch (25) on both sides of the power connection hole (24). The battery compartment (23) The outer side wall of the circuit board is provided with a housing insert arm (234) on both sides of the housing power cable hole (231). When the circuit board installed in the circuit board housing (2) is connected to the mains power, the two cable cover insert arms (32) are respectively inserted into the mounting hole (26) and fixed to the side wall of the circuit board housing (2). The cable cover body (31) is accommodated in the mounting notch (25). The power connection hole (24) is directly opposite the cable cover power cable hole (311). When the circuit board installed in the circuit board housing (2) is powered by the battery, the housing insert arms (234) are respectively inserted into the mounting hole (26) and fixed to the side wall of the circuit board housing (2).

7. The detachable housing for adapting to a non-magnetic water meter according to claim 6, characterized in that: The inner sidewall of the circuit board housing (2) is provided with a card insertion boss (27) protruding inward from the periphery of the mounting hole (26). The free end of the wire cover insertion arm (32) protrudes inward towards the power connection hole (24) with a second hook (321). When the circuit board installed in the circuit board housing (2) is connected to the mains power, the two wire cover insertion arms (32) are respectively inserted into the mounting hole (26), and the second hook (321) deforms beyond the mounting hole (26) and is locked outside the card insertion boss (27).

8. The detachable housing for adapting to a non-magnetic water meter according to claim 7, characterized in that: It also includes fixing screws. The top of the insert protrusion (27) has a fixing hole (271) that runs vertically and extends through to the mounting hole (26). The top of the compartment insert arm (234) has a fixing screw hole (2341) that runs vertically through itself. When the circuit board installed in the circuit board housing (2) is powered by a battery, the compartment insert arms (234) are respectively inserted into the mounting hole (26). The fixing hole (271) is directly opposite the fixing screw hole (2341). The fixing screw is inserted through the fixing hole (271) and screwed into the fixing screw hole (2341).

9. The detachable housing for adapting to a non-magnetic water meter according to claim 8, characterized in that: The top of the free ends of the two compartment arms (234) are respectively provided with sub-positioning through slots (2342) that run horizontally through the compartment arms (234). The two sub-positioning through slots (2342) face each other to form positioning slots (235). The top of the upper shell (21) is provided with a positioning block (211) that protrudes downward from the positioning slot (235). The positioning block (211) is inserted into the positioning slot (235).

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