Water Meter

Abstract

The present invention discloses a water meter glass cover structure, including a watch case and a glass cover arranged in the watch case, a recessed portion sunken from the surface inward is formed on one of the glass cover and the watch case, the surface is close to the other of the glass cover and the watch case, a convex portion is formed on the other of the glass cover and the watch case at a position corresponding to the recessed portion, the shape and size of the recessed portion are adapted to the convex portion, so that the convex portion can be inserted into the recessed portion. A water meter having the above structure is also disclosed. Compared with the prior art, the advantages of the present invention are: by setting a concave-convex matching structure of the watch case and the glass cover, the watch case and the glass cover can be conveniently positioned during installation; the metering mechanism and the magnetic sensitive element are arranged at the corresponding position of the concave-convex matching structure, so that the thin iron sheet can be prevented from being inserted into the watch case and the glass cover, that is, the thin iron sheet can be prevented from being inserted to block the signal transmission between the magnetic sensitive element and the signal transmitting piece, thereby ensuring the normal operation of the water meter and preventing water theft.

Description

Technical Field

[0001] The invention relates to a water meter, in particular to a water meter glass cover plate structure and a water meter with the structure. Background Art

[0002] A water meter is an instrument that measures the flow of liquids, especially water. In order to reduce the workload during meter reading, wireless remote water meters have emerged, which can send flow signals remotely to a computer system for centralized counting and management.

[0003] Wireless remote water meters mainly use the induction of magnetic sensitive elements and magnetic steel (transmitting pieces) to generate signals, which are output by the pulse signal output circuit of the magnetic sensitive elements. For example, a three-pulse sampling remote water meter disclosed in the Chinese patent application number 201410349165.X includes a water meter body, a signal collection and transmission device and a pointer arranged on the upper part of the water meter body. A magnet is arranged at the root of the pointer, and three collection sensors are arranged on the signal collection and transmission device. When the pointer rotates, the magnet passes through the collection sensor in turn, so that the collection sensor detects the magnetic signal and conducts, and then the collection sensor sends a signal.

[0004] In the existing water meters, the glass between the sensor and the magnet (magnet, signal transmitting piece) is usually flat glass, which makes it difficult to position the meter case during installation and inconvenient to install; and when a thin iron sheet is inserted between the water meter body and the collection device, it is easy to block the signal transmission between the sensor and the magnet, resulting in water theft. Summary of the invention

[0005] The first technical problem to be solved by the present invention is to provide a water meter glass cover structure to facilitate the installation of the meter case and the glass cover in view of the deficiencies in the above-mentioned prior art.

[0006] The second technical problem to be solved by the present invention is to provide a water meter with the above structure.

[0007] The third technical problem to be solved by the present invention is to provide a water meter with the above structure, which can ensure the signal transmission between the magnetic sensitive element and the signal transmitting piece, thereby preventing water theft.

[0008] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a water meter glass cover structure, including a watch case and a glass cover arranged in the watch case, characterized in that: a recessed portion recessed inward from the surface is formed on one of the glass cover and the watch case, the surface is close to the other of the glass cover and the watch case, and a protruding portion is formed on the other of the glass cover and the watch case at a position corresponding to the recessed portion, and the shape and size of the recessed portion are adapted to the protruding portion, so that the protruding portion can be stuck in the recessed portion.

[0009] The technical solution adopted by the present invention to solve the above second technical problem is: a water meter, characterized by having the water meter glass cover structure as described above.

[0010] The technical solution adopted by the present invention to solve the above-mentioned third technical problem is: a accommodating cavity is formed in the watch case and is recessed from the surface away from the glass cover plate toward the direction of the glass cover plate, the protrusion is formed on the bottom wall of the accommodating cavity facing the glass cover plate, and the recessed portion is formed on the glass cover plate; the water meter includes a dial, and a metering mechanism is arranged on the dial, and the metering mechanism is arranged on the side of the glass cover plate away from the watch case, and the position of the metering mechanism corresponds to the recessed portion, the metering mechanism includes a signal transmitting piece, and a magnetic sensitive element capable of sensing the signal of the signal transmitting piece is arranged in the accommodating cavity.

[0011] Preferably, the water meter further comprises a water meter body, the glass cover plate is arranged on the top of the water meter body, and the glass cover plate and the top of the water meter body are detachably connected via a mounting structure.

[0012] In order to avoid shaking of the glass cover and enhance the stability of installation, the installation structure includes a cap, a first gasket and a second gasket. The cap is hollow in shape and open at the top and bottom. The cap is detachably connected to the top of the water meter body. The glass cover is pressed between the first gasket and the second gasket. The first gasket is pressed inside the top of the cap, and the second gasket is pressed on the top of the water meter body.

[0013] In order to strengthen the axial pressure, the top end of the cap has a flange protruding inward from the periphery, the first gasket includes an annular gasket body, and the flange of the cap is pressed against the top surface of the gasket body of the first gasket.

[0014] In order to prevent water leakage in the water meter body, the installation mechanism also includes a sealing ring pressed between the top of the water meter body and the second gasket.

[0015] In order to enhance the radial pressure, the first gasket further includes a support portion extending downward from the periphery of the gasket body.

[0016] Preferably, the detachable connection between the cap and the water meter body is that the cap is cylindrical, the inner circumference of the cap is provided with an internal thread, and the top outer circumference of the water meter body is provided with an external thread, so that the cap and the water meter body are threadedly connected.

[0017] In order to facilitate limiting the position where the cap is screwed on, the portion of the top of the water meter body corresponding to the outer periphery of the glass cover plate forms an annular supporting surface, and the supporting portion can be supported on the supporting surface.

[0018] Compared with the prior art, the advantages of the present invention are as follows: by setting a concave-convex matching structure between the watch case and the glass cover plate, the watch case and the glass cover plate can be conveniently positioned during installation; the metering mechanism and the magnetic sensitive element are set at corresponding positions of the concave-convex matching structure, which can prevent the thin iron sheet from being inserted into the watch case and the glass cover plate, that is, preventing the thin iron sheet from being inserted to block the signal transmission between the magnetic sensitive element and the signal transmitting piece, thereby ensuring the normal operation of the water meter and preventing water theft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a water meter according to an embodiment of the present invention;

[0020] Figure 2 is a cross-sectional view of a water meter according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 A schematic diagram of the partial enlargement of Ⅰ;

[0022] Figure 4 It is a schematic diagram of the exploded structure of a water meter according to an embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of a water meter case according to an embodiment of the present invention;

[0024] Figure 6 It is a schematic diagram of the exploded structure of the glass cover plate installation of the water meter according to an embodiment of the present invention;

[0025] Figure 7 This is a cross-sectional view of the glass cover installation structure of a water meter according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings.

[0027] See also Figure 1 to Figure 3 A water meter is a remote water meter, comprising a meter cover 1, an electronic control housing 2, a meter case 3, a glass cover plate 4, a mounting structure 5 of the glass cover plate 4, a dial 6 and a water meter body 7.

[0028] See also Figure 2 to Figure 7 , wherein the watch cover 1 and the electronic control housing 2 are arranged on the top of the watch case 3, the watch case 3 is a hollow structure, and is divided into an independent first cavity 31 and a second cavity 32, the position of the first cavity 31 corresponds to the watch cover 1, and the position of the second cavity 32 corresponds to the electronic control housing 2. A control circuit board can be arranged in the electronic control housing 2 and the second cavity 32, and the above-mentioned glass cover 4 is arranged in the first cavity 31. The top and bottom of the above-mentioned first cavity 31 are open, the top of the second cavity 32 is open and the bottom is closed, and the watch cover 1 is transparent.

[0029] The dial 6 is arranged on the top of the water meter body 7 and is located in the first cavity 31, and the glass cover plate 4 is arranged above the dial 6. The dial 6 is provided with an indicating mechanism 61 and a metering mechanism 62, and there may be a plurality of indicating mechanisms 61, each indicating mechanism 61 includes a dial 611 and a pointer 612, and the metering mechanism 62 is connected to the structure in the water meter body 7 so as to be able to rotate around its own axis. The structure of the dial 6 and the water meter body 7 mentioned above can adopt the existing technology, such as the metering mechanism 62 can be driven to rotate by the impeller shaft in the water meter body 7.

[0030] The metering mechanism 62 includes a tray 621 and a signaling piece 622 arranged on the tray 621. The tray 621 can be made of transparent plastic and is circular. The signaling piece 622 is semicircular and is arranged on the top of the tray 621. The watch case 3 has a receiving cavity 33 formed by a top surface being recessed downward. The receiving cavity 33 is located in the first cavity 31 and corresponds to the position of the metering mechanism 62. The bottom wall of the receiving cavity 33 facing the metering mechanism 62 has a protrusion 34 protruding toward the metering mechanism 62. The protrusion 34 is preferably circular. A recess 41 is formed on the glass cover plate 4 at a position corresponding to the protrusion 34. The shape and size of the recess 41 are adapted to the protrusion 34, so that the protrusion 34 can be inserted into the recess 41, so that the watch case 3 can be easily positioned with the glass cover plate 4 when installed.

[0031] The positions of the protrusion 34 and the depression 42 are interchangeable.

[0032] A magnetic sensitive element 21, such as a Hall sensor, is connected to the control circuit board in the electronic control housing 2. The magnetic sensitive element 21 is arranged in the accommodating cavity 33, and can sense the position of the signal transmitting piece 622, and send out different signals when the signal transmitting piece 622 approaches or moves away (leaves the sensing range of the magnetic sensitive element 21). Through the cooperation of the above-mentioned raised portion 34 and the recessed portion 41, the cooperation position is not in the same plane as other positions of the glass cover plate 4, so that the thin sheet cannot be inserted between the watch case 3 and the glass cover plate 4 to block the signal transmission between the magnetic sensitive element 21 in the accommodating cavity 33 and the signal transmitting piece 622 on the dial 6, thereby avoiding the occurrence of water theft.

[0033] Through the semicircular signaling piece 622, only one magnetic sensor 21 is needed to measure the travel (number of rotations) of the signaling piece 622. Of course, the cooperation between the signaling piece 622 and the magnetic sensor 21 can also adopt the existing technology.

[0034] The top portion of the water meter body 7 extends into the first cavity 31, and the dial 6 is fixedly arranged on the top of the water meter body 7. The glass cover plate 4 is connected to the top of the water meter body 7 through the mounting structure 5. The mounting structure 5 includes a cap 51, a first gasket 52, a second gasket 53 and a sealing ring 54. The cap 51 is in a hollow cylindrical shape, with an axial top and a bottom open, and its axial top has a flange 511 protruding radially inward from the periphery. The first gasket 52 includes a circular gasket body 521 and a support portion 522 extending downward from the periphery of the gasket body 521, and the support portion 522 can be a continuous structure or a discontinuously arranged structure in the circumferential direction. The second gasket 53 and the sealing ring 54 are both circular and arranged in sequence below the glass cover plate 4. The second gasket 53 and the sealing ring 54 do not exceed the outer periphery of the glass cover plate 4, and the support portion 522 extends on the outer periphery of the glass cover plate 4. The first gasket 52 and the second gasket 53 can be made of hard plastic. The glass cover plate 4 is clamped between the gasket body 521 of the first gasket 52 and the second gasket 53 , and the flange 511 of the cap 54 is pressed against the top surface of the gasket body 521 of the first gasket 52 .

[0035] The supporting portion 522 and the sealing ring 54 are supported and pressed on the supporting surface 51 , and the supporting portion 522 is located at the outer periphery of the sealing ring 54 . Meanwhile, the supporting portion 522 extends at the outer periphery of the glass cover plate 4 to define the radial position of the glass cover plate 4 .

[0036] Internal threads (not shown) may be provided on the inner periphery of the cap 51 and the peripheral wall below the sealing ring 54, and external threads may be provided on the top periphery of the water meter body 7, so that the cap 51 (mounting structure) can be connected and fixed to the water meter body 7, and as the cap 51 is screwed onto the water meter body 7, the sealing ring 54 can be gradually pressed onto the water meter body 7 to ensure good sealing and prevent water from entering the dial 6. The portion of the top of the water meter body 7 corresponding to the periphery of the glass cover plate 4 constitutes an annular support surface 71, and the support portion 522 can be supported on the support surface 714. The provision of the support portion 522 can limit the degree to which the cap 51 is screwed in, and prevent the glass cover plate 4 from being damaged.

[0037] The glass cover plate 4 and the water meter body 7 can be stably connected through the above-mentioned installation structure 5. The gasket body 521 of the first gasket 52 and the second gasket 53 enable the glass cover plate 4 to be stably installed in the axial direction. The supporting portion 522 of the first gasket 52 enables the glass cover plate 4 to be stably installed in the radial direction, thereby avoiding the shaking of the glass cover plate 4. At the same time, this stable connection also enhances the strength of the glass cover plate 4, eliminates the structural strength weakening caused by the provision of the recessed portion 41, and ensures the safety of the overall structure.

Claims

1. A water meter, comprising a water meter glass cover plate structure, wherein the water meter glass cover plate structure comprises a meter case (3) and a glass cover plate (4) arranged in the meter case (3); Features: A recessed portion (41) recessed inwardly from the surface is formed on one of the glass cover plate (4) and the watch case (3), the surface being close to the other of the glass cover plate (4) and the watch case (3), a raised portion (34) being formed on the other of the glass cover plate (4) and the watch case (3) at a position corresponding to the recessed portion (41), the shape and size of the recessed portion (41) being adapted to the raised portion (34), so that the raised portion (34) can be inserted into the recessed portion (41); The case (3) has a receiving cavity (33) formed therein, the cavity being recessed from a surface away from the glass cover plate (4) toward the glass cover plate (4); the protrusion (34) is formed on a bottom wall of the receiving cavity (33) facing the glass cover plate (4); and the recess (41) is formed on the glass cover plate (4); the water meter comprises a dial (6); a metering mechanism (62) is arranged on the dial (6); the metering mechanism (62) is arranged on a side of the glass cover plate (4) away from the case (3); the position of the metering mechanism (62) corresponds to the recess (41); the metering mechanism (62) comprises a signal transmitting chip (622); and a magnetic sensitive element (21) capable of sensing a signal from the signal transmitting chip (622) is arranged in the case (33).

2. The water meter according to claim 1, Features: The water meter also comprises a water meter body (7), the glass cover plate (4) is arranged on the top of the water meter body (7), and the glass cover plate (4) and the top of the water meter body (7) are detachably connected via a mounting structure (5).

3. The water meter according to claim 2, Features: The mounting structure (5) comprises a cap (51), a first gasket (52) and a second gasket (53); the cap (51) is hollow and has open top and bottom ends; the cap (51) is detachably connected to the top of the water meter body (7); the glass cover plate (4) is pressed between the first gasket (52) and the second gasket (53); the first gasket (52) is pressed inside the top of the cap (51), and the second gasket (53) is pressed on the top of the water meter body (7).

4. The water meter according to claim 3, Features: The top end of the cap (51) has a flange (511) protruding inward from the periphery, and the first gasket (52) includes an annular gasket body (521). The flange (511) of the cap (51) is pressed against the top surface of the gasket body (521) of the first gasket (52).

5. The water meter according to claim 3, Features: The mounting structure (5) also includes a sealing ring (54) pressed between the top of the water meter body (7) and the second gasket (53).

6. The water meter according to claim 4, Features: The first gasket (52) further includes a supporting portion (522) extending downward from the periphery of the gasket body (521).

7. The water meter according to claim 6, Features: The cap (51) is cylindrical, the inner circumference of the cap (51) is provided with an internal thread, and the top outer circumference of the water meter body (7) is provided with an external thread, so that the cap (51) and the water meter body (7) are threadedly connected.

8. The water meter according to claim 7, Features: The portion of the top of the water meter body (7) corresponding to the outer periphery of the glass cover plate (4) forms an annular supporting surface (71), and the supporting portion (522) can be supported on the supporting surface (71).

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