Water meter cover dismounting and mounting structure

Abstract

The utility model provides a water meter cover dismounting structure, and belongs to the technical field of water meters. The problem of how to prevent the water stealing phenomenon is solved. According to the water meter cover disassembling and assembling structure, a water meter comprises a shell rotationally connected with a machine core, the disassembling and assembling structure comprises a locking ring and a connecting base which is fixed in the shell in a threaded connection mode and located below the machine core, an annular groove is formed between the connecting base and the shell, and the locking ring is rotationally connected in the annular groove. A plurality of locking assemblies are arranged on the inner side wall of the meter cover in the circumferential direction, a plurality of clamping jaws are arranged on the locking ring in the circumferential direction, and the meter cover is locked on the locking ring through clamping connection of the clamping jaws and the locking assemblies. The water meter cover dismounting and mounting structure can prevent water from being stolen.

Description

Technical Field

[0001] This utility model belongs to the field of water meter technology and relates to a water meter cover disassembly and assembly structure. Background Technology

[0002] Water meters are common measuring instruments in daily life. They are mainly installed in conjunction with tap water pipelines to accurately measure the water consumption of each household and provide managers with a scientific and reasonable basis for charging.

[0003] In the prior art, water meters generally include a housing, an impeller rotatably connected in the housing, and a mechanism connected to the housing (which is generally composed of a counter and a gear set). When water is supplied, the water in the pipe drives the impeller to rotate as it passes through the housing. The impeller and the mechanism drive the gear set in the mechanism through magnetic induction. The actual water consumption is then calculated by the gear set and the counter.

[0004] Based on the above, water meters in the prior art generally also include a cover that is detachably connected to the housing and houses the movement. Specifically, it can be screwed to the housing through a threaded connection, or it can be directly covered on the movement and screwed to the housing for positioning using fasteners.

[0005] Because the mainstream water meter technology on the market is generally magnetic induction, and these meters are usually installed in secluded corners, water theft has become increasingly common in recent years. Simply put, criminals often remove the meter cover and use tools with strong magnetic fields to affect the magnetic induction within the meter, thus stopping the water flow from entering the pipes. It's important to emphasize that this method of water theft is often very covert. Although staff periodically check the meters, the location of the tools used is often difficult to detect without careful observation, making it difficult to effectively control water theft and hindering the normal operation of billing. Summary of the Invention

[0006] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing a water meter cover disassembly and assembly structure. The technical problem this utility model aims to solve is: how to prevent water theft.

[0007] The objective of this utility model can be achieved through the following technical solution: a water meter cover disassembly and assembly structure, wherein the water meter includes a housing rotatably connected to a core, characterized in that the disassembly and assembly structure includes a locking ring and a connecting seat screwed into the housing and located below the core, wherein an annular groove is formed between the connecting seat and the housing, the locking ring is rotatably connected in the annular groove, the inner sidewall of the cover has a plurality of sets of locking components along the circumferential direction, the locking ring has a plurality of claws along the circumferential direction, and the cover is locked onto the locking ring by the plurality of claws engaging with the plurality of locking components.

[0008] The water meter cover's disassembly and assembly structure utilizes a detachable connection to the housing, creating a circumferentially oriented annular groove between the two. Before installing the connecting seat, the locking ring can be placed on the housing, thus confining the locking ring within the annular groove. During installation, the user, ensuring the locking ring is positioned, places the cover over the movement and manually screws it on. This engages the locking ring and the cover through the latches and locking components, securing the cover firmly to the locking ring and effectively protecting the movement. While protecting the meter cover, the locking mechanism, with the cooperation of claws and locking components, prevents the meter cover from being disassembled by hand, thus effectively preventing water theft. It is important to emphasize that water theft is a long-term, continuous illegal activity, not a short-term, one-off event. Although criminals may use violence to forcibly damage the meter cover, water bill collection requires staff to periodically visit the site to read and count water usage. Therefore, any instance of the meter cover being forcibly damaged serves as a reminder to staff, enabling them to take further preventative measures to avoid this phenomenon.

[0009] In the aforementioned water meter cover assembly and disassembly structure, each locking assembly includes a positioning block and a limiting block formed circumferentially on the inner wall of the cover and disposed opposite to each other. A limiting gap is formed between the positioning block and the limiting block, and the claw is positioned within the limiting gap. Specifically, each locking assembly uses the positioning block and the limiting block formed on the inner wall of the cover to cooperate and form a limiting gap between them. When installing the cover, the claw is engaged in the limiting gap, and the positioning block and the limiting block cooperate to circumferentially limit the claw, thereby achieving the purpose of locking the cover in the circumferential direction.

[0010] In the aforementioned water meter cover assembly / disassembly structure, each of the claws is strip-shaped, with a slot at one end. When the claw is located in the limiting gap, one end of the claw engages with the positioning block through the slot, while the other end abuts against the limiting block. The positioning block is inserted into the slot on the claw by snapping, and through the abutting cooperation between the two, coupled with the locking ring being confined in the annular groove, the meter cover is locked vertically.

[0011] In the aforementioned water meter cover assembly / disassembly structure, each of the limiting blocks is elongated and inclined inwards along the radial direction of the cover, with a deformation gap between the end of the limiting block facing the claw and the inner wall of the cover. During actual installation, the operator tightens the locking ring while it remains in position. At this time, the claw continuously compresses the limiting block when it contacts the side wall, causing the limiting block to deform outwards due to the deformation gap. This allows the claw to enter the limiting gap and the positioning block to engage in the claw's groove.

[0012] In the above-described water meter cover assembly / disassembly structure, the upper surface of the locking ring has a circumferentially shaped insertion groove, into which the meter cover is inserted. The inner wall of the locking ring has a circumferentially shaped limiting edge, which is embedded in the annular groove. The lower side of the limiting edge abuts against the housing, and the upper side abuts against the outer wall of the connecting seat. The meter cover is inserted into the insertion groove on the locking ring, thereby limiting the meter cover's circumferential rotation. The limiting edge of the locking ring ensures that, after installation, the limiting edge is confined within the annular groove.

[0013] In the above-described water meter cover assembly and disassembly structure, the lower surface of the locking ring is provided with several tooling slots along the circumference, and these tooling slots are spaced apart along the circumference of the locking ring. During meter cover assembly, the operator can engage the tooling with each tooling slot, thereby ensuring that the locking ring remains in position during meter cover installation.

[0014] In the aforementioned water meter cover disassembly and assembly structure, the structure further includes a protective ring fitted around the locking ring, and the protective ring is connected and fixed to the housing by a lead seal. This serves to conceal the locking ring, and the lead seal further prevents the protective ring from being removed.

[0015] In the aforementioned water meter cover assembly / disassembly structure, the outer edge of the locking ring has an outwardly protruding guide portion along the circumferential direction, and the inner wall of the protective ring has several spaced-apart protrusions along the circumferential direction. The protective ring is fastened to the outside of the guide portion, and the guide portion engages with each of the protrusions. This further improves the installation firmness of the protective ring and prevents it from being manually removed, thus exposing the locking ring.

[0016] In the above-described water meter cover assembly and disassembly structure, the outer circumferential wall of the guide portion has an arc-shaped cross-section edge along the radial section of the locking ring, and the surface of each protrusion facing the outer wall of the guide portion is inclined outward from top to bottom. This ensures that the assembly of the protective ring is easier through the cooperation of the arc surface and the inclined surface between the guide portion and each protrusion.

[0017] Compared with existing technologies, the disassembly and assembly structure of this water meter cover has the following advantages:

[0018] The meter cover rotates relative to the locking ring, causing each claw to engage and lock with each set of locking components, thus firmly positioning the meter cover and providing protection against wind, rain, and sun. In this state, the meter cover cannot be removed without force. If criminals forcibly damage the meter cover, staff can promptly detect the damage during meter reading and take appropriate measures, thereby effectively preventing water theft. Attached Figure Description

[0019] Figure 1 This is a side view of the disassembly and assembly structure of this water meter cover.

[0020] Figure 2 yes Figure 1 A sectional view taken along the AA direction and a magnified view of a portion thereof.

[0021] Figure 3 yes Figure 1 A sectional view taken along the BB direction and a magnified view of a portion thereof.

[0022] Figure 4 This is an exploded view of the disassembly and assembly structure of the water meter cover.

[0023] Figure 5 This is a schematic diagram of a structure with a connecting seat installed on the housing.

[0024] Figure 6 This is a schematic diagram of the watch cover and a magnified view of a portion thereof.

[0025] Figure 7 This is a schematic diagram of the locking ring.

[0026] Figure 8 This is a structural schematic diagram of the locking ring from another perspective.

[0027] Figure 9 This is a schematic diagram of the protective ring and a magnified view of its parts.

[0028] In the diagram, 1 is the housing; 11 is the movement; 12 is the connecting seat; 2 is the locking ring; 21 is the pawl; 211 is the pawl; 22 is the insertion slot; 23 is the limiting edge; 24 is the tooling slot; 25 is the guide part; 3 is the annular groove; 4 is the watch cover; 41 is the locking assembly; 411 is the positioning block; 412 is the limiting block; 413 is the limiting gap; 5 is the deformation joint; 6 is the protective ring; and 61 is the protrusion. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] like Figure 1-8 As shown, in this water meter cover assembly and disassembly structure, the water meter includes a housing 1, on which an organic core 11 (in this embodiment) is installed. Figure 2 , Figure 3 The internal structure of the movement 11 is not related to the counting problem to be solved in this case, therefore some transmission gear components in the movement 11 are not shown. The disassembly and assembly structure includes a connecting seat 12 and a locking ring 2. The connecting seat 12 is installed in the mounting opening at the top of the housing 1 by means of a threaded connection, so that an annular groove 3 is formed circumferentially between the connecting seat 12 and the outer wall of the top of the housing 1. The inner wall of the locking ring 2 has a protruding annular edge along the circumferential direction. Before installing the connecting seat 12, the operator can first place the locking ring 2 on the top of the housing 1 through the annular edge, and then assemble the connecting seat 12, thereby locking the ring. Ring 2 is limited in the annular groove 3 by the limiting edge 23. The bottom of the locking ring 2 has four tooling slots 24 circumferentially opened. During the assembly of the watch cover 4, the operator can insert special tooling into each tooling slot 24, so that the locking ring 2 is temporarily positioned on the housing 1. The movement 11 is rotatably connected to the top of the housing 1 and located above the connecting seat 12. It is magnetically inductively coupled with the impeller installed in the housing 1 (the impeller also has a magnet installed) by the magnet installed at the bottom. Under the action of water flow, the movement 11 is counted by the change of magnetic field.

[0031] like Figure 7 and Figure 8 As shown, a ring-shaped insertion groove 22 is provided on the top of the locking ring 2 along the circumference. The bottom of the watch cover 4 is inserted into the insertion groove 22 by means of insertion. The top of the watch cover 4 has an opening. The watch cover 4 can be engaged with the glass panel on the top of the movement 11 through the opening, so that the watch cover 4 and the movement 11 can be positioned together. In subsequent meter reading work, in order to facilitate the staff to read the meter smoothly and accurately, the watch cover 4 can be rotated by hand, so that the watch cover 4 drives the locking ring 2 and the movement 11 to rotate a certain range on the housing 1, ensuring that the numerals on the movement 11 are facing the staff.

[0032] like Figure 6-8 As shown, a plurality of elongated and spaced-apart claws 21 are integrally formed circumferentially on the top of the locking ring 2 and on the inner side of the insertion groove 22. Each claw 21 has a groove 211 at one end. A plurality of sets of spaced-apart locking components 41 are formed circumferentially on the inner wall of the watch cover 4. Specifically, each set of locking components 41 includes a positioning block 411 and a limiting block 412 disposed opposite to each other on the inner wall of the watch cover 4. A limiting gap 413 is formed between the positioning block 411 and the limiting block 412 in the same set of locking components 41. The limiting blocks 412 in each set of locking components 41 are all elongated. Each limiting block 412 is inclined inward along the radial direction of the watch cover 4. In each set of locking components 41, the end of the limiting block 412 facing the positioning block 411 and the watch cover A deformation gap is formed between the inner walls of the watch cover 4. During the assembly of the watch cover 4, the operator can manually twist the watch cover 4 that has been inserted into the insertion slot 22, so that each claw 21 presses against the limiting block 412 in each locking assembly 41. Due to the existence of the deformation gap 5, each limiting block 412 continuously deforms towards the inner wall of the watch cover 4, ensuring that each claw 21 can pass over the limiting block 412 and enter the limiting gap 413. At this time, the positioning block 411 is engaged in the slot 211 located at one end of the claw 21, and the other end of the claw 21 abuts against the reset limiting block 412. Thus, through the cooperation of each claw 21 and each locking assembly 41, the watch cover 4 is fully positioned, ensuring that the watch cover 4 cannot be disassembled without violent operation.

[0033] Combination Figure 2 The disassembly and assembly structure also includes a protective ring 6, which is sleeved on the outside of the cover 4 and fastened to the locking ring 2. The protective ring 6 is connected and fixed to the housing 1 by a lead seal. The outer edge of the top of the locking ring 2 has a guide portion 25 that protrudes outward in the circumferential direction. The cross-sectional profile of the guide portion 25 along the radial section of the protective ring 6 is arc-shaped. On the inner side wall of the protective ring 6, there are several protrusions 61 that are spaced apart in the circumferential direction. Each protrusion 61 is inclined outward from top to bottom on the side facing the locking ring 2. When installing the protective ring 6, the user can press it down forcefully. Under the guidance of the guide portion 25 and the side wall of the protrusion 61, the protective ring 6 can deform slightly in the radial direction, thereby limiting the position of the protective ring 6 by the snap-fit ​​cooperation of the guide portion 25 and each protrusion 61.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0035] Although this document frequently uses terms such as housing 1, movement 11, connecting seat 12, locking ring 2, pawl 21, pawl 211, insertion groove 22, limiting edge 23, tooling groove 24, guide part 25, annular groove 3, watch cover 4, locking assembly 41, positioning block 411, limiting block 412, limiting gap 413, deformation seam 5, protective ring 6, and protruding block 61, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. A water meter cover disassembly and assembly structure, wherein the water meter includes a housing (1) rotatably connected to an organic core (11), characterized in that, The disassembly and assembly structure includes a locking ring (2) and a connecting seat (12) screwed into the housing (1) and located below the movement (11). An annular groove (3) is formed between the connecting seat (12) and the housing (1). The locking ring (2) is rotatably connected in the annular groove (3). The inner sidewall of the watch cover (4) has several sets of locking components (41) along the circumferential direction. The locking ring (2) has several claws (21) along the circumferential direction. The watch cover (4) is locked onto the locking ring (2) by several claws (21) and several locking components (41).

2. The water meter cover disassembly and assembly structure according to claim 1, characterized in that, Each locking assembly (41) includes a positioning block (411) and a limiting block (412) formed circumferentially on the inner wall of the cover (4) and disposed opposite to each other. A limiting gap (413) is formed between the positioning block (411) and the limiting block (412), and the claw (21) is positioned in the limiting gap (413).

3. The water meter cover disassembly and assembly structure according to claim 2, characterized in that, Each of the claws (21) is in the shape of a strip plate. Each of the claws (21) has a slot (211) at one end. When the claw (21) is located in the limiting gap (413), one end of the claw (21) is engaged with the positioning block (411) through the slot (211), and the other end abuts against the limiting block (412).

4. The water meter cover disassembly and assembly structure according to claim 3, characterized in that, Each of the limiting blocks (412) is elongated and inclined inward along the radial direction of the watch cover (4), and there is a deformation gap (5) between the end of the limiting block (412) facing the claw (21) and the inner wall of the watch cover (4).

5. The water meter cover disassembly and assembly structure according to any one of claims 1-3, characterized in that, The upper surface of the locking ring (2) has an annular insertion groove (22) along the circumferential direction. The cover (4) is inserted into the insertion groove (22). The inner wall of the locking ring (2) has an annular limiting edge (23) along the circumferential direction. The limiting edge (23) is embedded in the annular groove (3). The lower side of the limiting edge (23) abuts against the housing (1) and the upper side abuts against the outer wall of the connecting seat (12).

6. The water meter cover disassembly and assembly structure according to claim 5, characterized in that, The lower surface of the locking ring (2) is provided with a plurality of tooling grooves (24) along the circumferential direction, and the plurality of tooling grooves (24) are spaced apart along the circumferential direction of the locking ring (2).

7. The water meter cover disassembly and assembly structure according to any one of claims 1-4, characterized in that, The disassembly and assembly structure also includes a protective ring (6) sleeved on the locking ring (2), and the protective ring (6) is connected and fixed to the housing (1) by a lead seal.

8. The water meter cover disassembly and assembly structure according to claim 7, characterized in that, The locking ring (2) has an outwardly protruding guide portion (25) on its outer edge along the circumferential direction, and the inner wall of the protective ring (6) has a number of spaced protrusions (61) along the circumferential direction. The protective ring (6) is fastened to the outside of the guide portion (25) and the guide portion (25) is engaged with each of the protrusions (61).

9. The water meter cover disassembly and assembly structure according to claim 8, characterized in that, The outer circumferential wall of the guide portion (25) is arc-shaped along the radial section edge of the locking ring (2), and the surface of each protrusion (61) facing the outer wall of the guide portion (25) is inclined outward from top to bottom.

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