TW202210839A - Single-phase and two-wire smart meter - Google Patents

Abstract

The present invention relates to a single-phase and two-wire smart meter. A receiver is raised from a casing to receive a wireless communication module therein. The receiver has a cover to cover an opening thereof. A waterproof tape is between the opening and the cover and a sealing assembly is used for a sealing task. The lead sealing assembly has a screw, a positioning element and a lead sealing element. The cover is screwed to the receiver by the screw. The positioning element is on a screwing path of the screw and a channel is formed through the screw. When a thickness of the waterproof tape achieves a sealing thickness, the channel aligns a positioning slot formed on the cover so the lead sealing element passes through the positioning slot and the channel and then securely locked. Therefore, the lead sealing assembly of the present invention has locking function, waterproof confirmation, and lead sealing function.

Description

Single-phase two-wire smart meter

The invention relates to a single-phase two-wire smart meter, in particular to a single-phase two-wire smart meter with a multifunctional lead-sealing structure.

In order to achieve the purpose of energy saving, the smart metering infrastructure (Advanced Metering Infrastructure; AMI) is an important task. Through smart meter settings, combined with time price and other measures, the demand-side management can be strengthened, so that the energy can achieve the optimal use efficiency, In order to achieve the goal of suppressing peak power consumption and saving energy.

As shown in Figure 6, it is a mechanical single-phase two-wire electricity meter 80 currently used to calculate public electricity consumption in China. It is usually installed on the outdoor wall or column of a building, so that the meter copying personnel can conveniently copy the public electricity of the building. energy used. Therefore, in order to replace the mechanical single-phase two-wire meter 80 with a single-phase two-wire smart meter to complete the infrastructure construction of the smart meter, the service life and lead sealing operation must be considered first.

There are many problems in the actual promotion of traditional smart electricity meters. For example, according to my country's Weights and Measures Law, electricity meters that charge bills must pass the weights and measures inspection and then be sealed to prevent them from being opened and modified at will. For safety reasons, smart electricity meters on the market are also It is further designed so that it cannot be connected to any external terminal to avoid the risk of information being modified; however, because the communication function of the smart meter is limited, it cannot immediately meet the management needs of optimal electricity consumption.

Therefore, in order to truly implement the infrastructure of smart meters, mechanical single-phase two-wire meters must be replaced with smart meters, but at the same time, it is necessary to take into account the needs of outdoor waterproofing, convenient lead sealing operations, and safe data communication.

In view of the above requirements of the single-phase two-wire smart meter, the main purpose of the present invention is to provide a new single-phase two-wire smart meter.

The main technical means used to achieve the above purpose are to make the single-phase two-wire smart meter include: a casing, a front side plate of which protrudes forward to a box body, and a first through hole is formed on the opening periphery of the box body and close to the first side of the box body; a wireless communication module, which is arranged in the box body; a cover plate, one side of which is pivotally connected to the second side of the box body to cover the opening of the box body, the cover plate extends forwardly with a hollow cylinder corresponding to the first through hole, and a bottom surface of the hollow cylinder is formed with a A second through hole is aligned with the first through hole, and two opposite positioning grooves are formed on the side wall of the hollow cylinder; A waterproof rubber strip is sandwiched between the box body and the cover plate; and A lead seal assembly, including: a screw, which penetrates through the hollow cylinder of the cover plate, passes through the first through hole and the second through hole, and is screwed to the box body; a positioning member is disposed on the screw threading path and forms a limiting channel, when the thickness of the waterproof rubber strip reaches a sealing thickness, the limiting channel is aligned with the positioning grooves; and A first lead sealing element passes through the positioning groove of the hollow cylinder and the limiting channel of the positioning member for lead sealing; wherein the height of the positioning groove and the limiting channel is the same as the height of the first lead sealing element Buckle thickness to match.

It can be seen from the above description that the single-phase two-wire smart meter of the present invention uses a wireless communication module, and it is not necessary to reserve a signal connection port for an external terminal, so that the meter's billing information can be transmitted smoothly, and considering the importance of waterproofing, the present invention The single-phase two-wire smart meter is performing the lead-sealing operation of the wireless communication module inspection. When the operator finally uses the lead-sealing component, as long as the screw is tightened, the limiting channel of the positioning member is the same as the positioning groove of the hollow cylinder. Alignment, at this time, the waterproof rubber strip has been pressed to the sealing thickness to achieve sufficient waterproof effect, and the mutually aligned limit channels and positioning grooves are more suitable for the lead sealing components to be buckled; on the contrary, if the operator does not tighten This screw not only fails to fasten the lead sealing element, but also means that the waterproof rubber strip has not reached the sealing thickness; therefore, the lead sealing assembly of the present invention can be used by the operator to lock the cover plate on the box body at the same time, ensuring that the cover plate and the box are locked together. The waterproof function between the bodies, and the final lead sealing operation.

The present invention is mainly aimed at improving the single-phase two-wire electric meter. The following describes the technical content of the present invention in detail with reference to several embodiments and drawings.

First, please refer to FIG. 1 , which is a three-dimensional appearance view of a first embodiment of a single-phase two-wire smart electric meter according to the present invention. In conjunction with FIG. 2 , the single-phase two-wire smart electric meter 1 includes a housing 10 , a power metering unit 20, a wireless communication module 33, a cover plate 40, a waterproof rubber strip 50, a lead seal assembly 60, a power line connection terminal block 70, a first trim cover 71 and a second trim Plate cover 72.

A front side plate 101 of the above-mentioned casing 10 protrudes forward from a box body 11, and a first through hole 112 is formed on the periphery of the opening 110 of the box body 11 and close to the first side 111 of the box body 11; in this embodiment, the first hole 112 is formed. The through hole 112 is a screw hole.

The above-mentioned power measuring unit 20 is provided in the casing 10 .

The above-mentioned wireless communication module 30 is disposed in the box body 11 of the casing 10 and is electrically connected with the power metering unit 20; in this embodiment, the wireless communication module 30 is a pluggable wireless communication module The housing 31 of the wireless communication module 30 extends toward the surface of the cover plate 40 with a protruding portion 32 for hand-held extraction of the wireless communication module 30 for easy replacement The wireless communication module 30; preferably, the casing 31 has an arc-shaped side 33 facing the first side 111 of the box body 11, so as to be compatible with the single-phase three-wire smart meter, the three-phase four-wire smart meter ( It is shared by the wireless communication module of the round meter).

One side of the cover plate 40 is pivotally connected to the second side 113 of the box body 11 to cover the opening 110 of the box body 11 , and the cover plate 40 extends forwardly corresponding to the first through hole 112 with a hollow cylinder 41 , the bottom surface of the hollow cylinder 41 is formed with a second through hole 411 aligned with the first through hole 112 , and two opposite positioning grooves 413 are formed on the side wall 412 of the hollow cylinder 41 ; the cover plate 40 faces the opening of the box body 11 A protruding rib 42 extends from the periphery of 110 . In this embodiment, the cover plate 40 is a transparent cover plate.

The waterproof rubber strip 50 is sandwiched between the box body 11 and the cover plate 40 ; in this embodiment, the waterproof rubber strip 50 is embedded in the periphery of the opening 110 of the box body 11 , and the first through hole 112 is It is located on the outside of the waterproof rubber strip 50; preferably, two parallel protruding rings 114 are formed on the periphery of the opening 110 of the box body 11, for the waterproof rubber strip 50 to be embedded therein, and the ribs 42 of the cover plate 40 are aligned. Between the two parallel protruding rings 114 , when the cover plate 40 covers the box body 11 , the protruding rib 42 presses the waterproof rubber strip 50 to a sealing thickness.

The above-mentioned lead sealing component 60 includes a screw 61, a positioning member 62, and a first lead sealing element 63; wherein the screw 61 penetrates through the hollow cylinder 41 of the cover plate 40 and passes through the second through holes 411 and The first through hole 112 is finally screwed onto the box body 11 . The positioning member 62 is disposed on the screwing path of the screw 61, and forms a limiting channel 621. When the thickness of the waterproof rubber strip 50 reaches a sealing thickness, the limiting channel 621 is aligned with the positioning grooves 413 to keep the The communication space between the limiting channel 621 and the positioning grooves 413 is in a clear state; in this embodiment, the positioning member 62 is integrally formed with the screw 61 , that is, the nut 611 of the screw 61 is formed with the positioning member 62 limit channel 621. The first lead sealing element 63 passes through the positioning groove 413 of the hollow cylinder 41 and the limiting channel 621 of the positioning member 62 for lead sealing; wherein the height of the positioning groove 413 and the limiting channel 621 is related to the The thickness of the ring 631 of the first lead sealing element 63 is matched.

Since the single-phase two-wire smart meter 1 may be installed outdoors or in the basement, the wireless communication module 30 with better communication quality will be selected according to the geographical location. As shown in FIG. After the communication module 30 is inserted into the box body 11, the operator performs the lead sealing operation again; at this time, the cover plate 40 is covered with the opening 110 of the box body 11, and the screw 61 of the lead seal assembly 60 is aligned with the hollow column The second through hole 411 of the body 41 is screwed into the first through hole 112 of the box body 11 to lock the cover plate 40 on the box body 11; as shown in FIG. 3A, in order to ensure that the operator tightens the screw 61. The operator can confirm whether the limiting channel 621 of the nut 611 of the screw 61 is aligned with the positioning groove 413 of the hollow cylinder 41. When the limiting channel 621 of the nut 611 is aligned with the positioning of the hollow cylinder 41 The groove 413 , as shown in FIG. 3B , because the height of the limiting channel 521 matches the thickness of the loop 631 of the first lead sealing element 63 , the operator can smoothly insert the loop 631 through the positioning groove 413 The limiting channel 621 is then buckled to complete the lead sealing operation; at this time, the convex rib 42 of the cover plate 40 will also press the waterproof rubber strip 50 to compress its thickness to the sealing thickness, so as to ensure that the cover plate 40 is tightly sealed Furthermore, since the first through hole 112 is located outside the waterproof rubber strip 50 , there is no need to worry that water droplets outside the box 11 penetrate into the opening 110 of the box 11 through the screw 61 .

As shown in FIG. 1 and FIG. 2 , the above-mentioned power line connection terminal block 70 is arranged on the bottom surface of the casing 10 to connect the power line (not shown in the figure) of the building for electricity consumption measurement; and the power line connection terminal block 70 A screw hole 701 is formed on the front side; in order to ensure that the connection between the power line connection terminal block 70 and the power line is not exposed, the first decorative plate cover 71 or the second decorative plate 72 is then covered, and the lead sealing screw 73 is used to pass through it. Screw on the screw hole 701 to lock the first or second decorative plate 71, 72 on the power line connection terminal block 70, because the nut of the lead screw 73 has a through hole 731, which can be used for a second The lead sealing element 74 is snapped thereon. The first decorative plate 71 is shorter than the second decorative plate 72 and is suitable when the smart electric meter 1 is installed in a sheltered place. If the smart electric meter 1 is installed in a sheltered place outdoors, in order to prevent rainwater from flowing into the power line connection terminal block 70 along the power line pipe , a longer second trim panel 72 can be used.

Referring to FIG. 2 again, the box body 11 is further provided with an optical communication port 12 , and the cover plate 40 is embedded with a magnetic chuck 43 corresponding to the optical communication port 12 ; since the magnetic chuck 43 is embedded in the cover plate 40 inside, to avoid the magnetic chuck 43 being set outside the cover plate 40 and getting wet and rusting.

Please refer to FIG. 4 , which is an exploded perspective view of the second embodiment of the single-phase two-wire smart electric meter 1a of the present invention. The structure of the single-phase two-wire smart electric meter 1a is mostly the same as that of the first embodiment. The positioning member 62 of the lead seal assembly 60a is a sleeve, the sleeve is formed with the limiting channel 621, as shown in FIG. To cover the nut 611 of the screw 61 exposed on the hollow cylinder; as shown in FIG. 5B , when the screw 61 is screwed firmly, the nut 611 of the screw 61 will not interfere with the limiting channel 621 and the The communication space after the alignment of the positioning grooves 413 is maintained, and the communication space is kept clear, so that the operator can smoothly pass the ring buckle 631 through the positioning groove 413 into the limit channel 621 and then buckle it to complete the lead sealing operation; at this time, the The protruding ribs 42 of the cover plate 40 also press the waterproof rubber strip 50 to compress its thickness to a sealing thickness, so as to ensure that the cover plate has the opening 110 in close contact with the box body 11 .

To sum up, the single-phase two-wire smart meter of the present invention uses a wireless communication module, and it is not necessary to reserve a signal connection port for an external terminal, so that the billing information of the meter can be transmitted smoothly, and considering the importance of waterproofing, the present invention The single-phase two-wire smart meter is performing the lead-sealing operation of the wireless communication module inspection. When the operator finally uses the lead-sealing component, as long as the screw is tightened, the limiting channel of the positioning member is the same as the positioning groove of the hollow cylinder. Alignment, at this time, the waterproof rubber strip has been pressed to the sealing thickness to achieve sufficient waterproof effect, and the mutually aligned limit channels and positioning grooves are more suitable for the lead sealing components to be buckled; on the contrary, if the operator does not tighten This screw not only fails to fasten the lead sealing element, but also means that the waterproof rubber strip has not reached the sealing thickness; therefore, the lead sealing assembly of the present invention can be used by the operator to lock the cover plate on the box body at the same time, ensuring that the cover plate and the box are locked together. The waterproof function between the bodies, and the final lead sealing operation.

The above descriptions are only the embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed as above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field, Within the scope of not departing from the technical solution of the present invention, when the technical content disclosed above can be used to make some changes or modifications to equivalent embodiments with equivalent changes, but any content that does not depart from the technical solution of the present invention, according to the technical essence of the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solutions of the present invention.

1. 1a: Smart meter 10: Shell 101: Front side panel 11: Box body 110: Opening 111: First side 112: First piercing 113: Second side 20: Electricity metering unit 30: Wireless communication module 31: Shell 32: Projection 33: Curved sides 40: cover plate 41: Hollow cylinder 411: Second Perforation 412: Sidewall 413: Positioning slot 42: Ribs 43: Magnetic chuck 50: Waterproof strip 60, 60a: Lead seal components 61: Screws 611: Nut 62: Positioning pieces 621: Limit channel 63: The first lead seal component 631: Ring buckle 70: Power line connection terminal block 701: screw hole 71: First trim 72: Second trim 73: Lead seal screw 731: Perforation 80: Electric meter

FIG. 1 is a three-dimensional appearance view of the first embodiment of the single-phase two-wire smart meter of the present invention. Figure 2: Partial isometric exploded view of Figure 1 . FIG. 3A: A partial cross-sectional view of the screw in FIG. 1 when it is not tightened. Figure 3B: A partial cross-sectional view of the screw in Figure 1 when it is tightened. FIG. 4 is a three-dimensional appearance view of the second embodiment of the single-phase two-wire smart electric meter of the present invention. FIG. 5A is a partial cross-sectional view of the screw shown in FIG. 4 when it is not tightened. Fig. 5B: A partial cross-sectional view of the screw in Fig. 4 when tightened. Figure 6: Appearance diagram of a traditional mechanical single-phase two-wire meter.

1: Smart meter

10: Shell

11: Box body

40: cover plate

41: Hollow cylinder

43: Magnetic chuck

60: Lead seal components

61: Screws

63: The first lead seal component

631: Ring buckle

72: Second trim

73: Lead seal screw

Claims (10)

A single-phase two-wire smart meter, comprising: a casing, a front side plate of which protrudes forward to a box body, and a first through hole is formed on the opening periphery of the box body and close to the first side of the box body; a power metering unit, which is arranged in the casing; a wireless communication module, disposed in the box body, and electrically connected with the power metering unit; a cover plate, one side of which is pivotally connected to the second side of the box body to cover the opening of the box body, the cover plate extends forwardly with a hollow cylinder corresponding to the first through hole, and a bottom surface of the hollow cylinder is formed with a A second through hole is aligned with the first through hole, and two opposite positioning grooves are formed on the side wall of the hollow cylinder; A waterproof rubber strip is sandwiched between the box body and the cover plate; and A lead seal assembly, including: a screw, which penetrates through the hollow cylinder of the cover plate, passes through the first through hole and the second through hole, and is screwed to the box body; a positioning member is disposed on the screw threading path and forms a limiting channel, when the thickness of the waterproof rubber strip reaches a sealing thickness, the limiting channel is aligned with the positioning grooves; and A first lead sealing element passes through the positioning groove of the hollow cylinder and the limiting channel of the positioning member for lead sealing; wherein the height of the positioning groove and the limiting channel is the same as the height of the first lead sealing element Buckle thickness to match. The single-phase two-wire smart meter as claimed in claim 1, wherein the positioning member is integrally formed with the screw, and the nut of the screw forms the limiting channel. The single-phase two-wire smart meter as claimed in claim 1, wherein the positioning member is a sleeve, the sleeve is formed with the limiting channel, and after the hollow cylinder is inserted, the screw is covered and exposed to the outside. The nut of the hollow cylinder; wherein when the thickness of the waterproof rubber strip reaches the sealing thickness, the screw does not interfere with the communication space after the limiting channel is aligned with the positioning grooves. The single-phase two-wire smart meter according to any one of claims 1 to 3, wherein the wireless communication module is a pluggable wireless communication module, which is inserted into the box body, and the wireless communication module is a pluggable wireless communication module. The casing of the communication module extends toward the surface of the cover plate with a protruding part. The single-phase two-wire smart meter as claimed in claim 4, wherein the casing of the wireless communication module has an arc-shaped side toward the first side of the box body. The single-phase two-wire smart meter according to any one of claims 1 to 3, wherein a power line connection terminal seat is provided on the bottom surface of the housing, a screw hole is formed on the front side of the power line connection terminal seat, and the housing The department further includes: a first trim cover to cover the power line connection terminal block; a lead-sealing screw for screwing the first trim panel cover to the screw hole of the power line connection terminal block, the lead-sealing screw is formed with a through hole; and A second lead sealing element is fastened to the through hole of the lead sealing screw. The single-phase two-wire smart meter as claimed in claim 6, wherein the housing further includes a second trim cover, the length of which is longer than the first trim cover, and can cover the first trim cover, the Lead sealing screws are used to screw the first and second trim cover to the screw holes of the power line connection terminal block. The single-phase two-wire smart meter according to any one of claims 1 to 3, wherein: The waterproof rubber strip is embedded in the opening periphery of the box body; and The cover plate is formed with a protruding rib corresponding to the waterproof rubber strip, so as to press the waterproof rubber strip. The single-phase two-wire smart meter as claimed in claim 8, wherein the first perforation is located on the outer side of the waterproof rubber strip. The single-phase two-wire smart meter as claimed in claim 8, wherein the first through hole is a The box body is further provided with an optical communication port; and A magnetic chuck is embedded in the cover plate corresponding to the optical communication port.

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