Electric energy meter with safety protection function

Abstract

The invention belongs to an electric energy meter, and particularly relates to an electric energy meter with a safety protection function. An electric energy meter with a safety protection function can still guarantee stable connection of electric wires when screws are loosened and is convenient to install and maintain, the electric energy meter is installed on the front side of a carrier in a hanging mode, and the outer surface of the electric energy meter is composed of a rear protection structure, a front shell, a protection structure and a clamping structure. The rear protection structure and the front shell are fixed in a clamping and bolt mode, a protection structure is connected to the lower portion of the front shell in a rotating mode, a clamping structure is arranged on the portion, on the rear side of the protection structure, of the rear protection structure, and the clamping structure and the protection structure are matched to fix the electric wire. According to the invention, through the cooperation of the wiring protection structure and the clamping structure, when the bolt of the wiring port is loosened, the electric wire does not fall off, the electric energy meter is safer, and the flexible gasket can prevent the wave-shaped pressing rod and the upper arc-shaped pressing sheet from crushing the electric wire.

Description

Technical Field

[0001] The present invention belongs to an electricity meter, and particularly relates to an electricity meter with a safety protection function. Background Art

[0002] In the field of power metering, as the core device for realizing power measurement, recording, and transmission, the safe and stable operation of an electricity meter is of great significance for the accurate metering and reliable power supply of the power system.

[0003] At present, most of the electricity meters widely used on the market adopt a design of tightening wires with bolts at the inlet connection. This traditional connection method has obvious drawbacks in practical applications. Since the wires are usually installed from below the electricity meter, the screws for tightening the wires need to bear the weight of the wires themselves for a long time. During long-term use, even if the screws are tightened during installation, they may become loose due to factors such as vibration, thermal expansion, and contraction. Once the screws become loose, the wires are extremely likely to slip. Once the wires slip, it will not only cause a circuit interruption and affect normal power supply, but may also trigger serious safety accidents such as short circuits and electric leaks, posing a great threat to the life and property safety of users and the stable operation of the power system.

[0004] Therefore, there is an urgent need for an electricity meter with a safety protection function that can ensure the stable connection of wires even when the screws are loose and is convenient for installation and maintenance. Summary of the Invention

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides an electricity meter with a safety protection function that can ensure the stable connection of wires even when the screws are loose and is convenient for installation and maintenance.

[0006] Technical Solution: An electricity meter with a safety protection function, the electricity meter is installed on the front side of the carrier in a hanging manner. The outer surface of the electricity meter consists of a rear protection structure, a front shell, a protection structure, and a clamping structure. The wiring protection structure includes a protective cover, an internal hexagonal bolt, and an upper arc-shaped pressing piece. A protective cover is rotatably arranged at the lower part of the front side of the front shell, and the protective cover can be fixed on the front shell through the internal hexagonal bolt. A concave wire passing groove is opened at the lower part of the protective cover, and upper arc-shaped pressing pieces are arranged on the front walls of the wire passing groove. An arc-shaped clamping groove is opened at the position of the upper arc-shaped pressing piece close to the electricity meter interface; the clamping structure includes a guide post, a slider, a first spring, a wavy pressing rod, and a flexible gasket. Guide posts extending forward are arranged on both the left and right sides of the bottom of the rear cover, a slider is slidably connected between the guide posts, a first spring is connected between the slider and the rear end of the guide post, a wavy pressing rod is connected between the sliders, and the wavy pressing rod is behind the arc-shaped clamping groove.

[0007] As a preferred technical solution of the present invention, the clamping structure further includes a flexible gasket, and a flexible gasket is arranged on the front side of the wavy pressing rod.

[0008] As a preferred technical solution of the present invention, the installation carrier includes an installation plate, hollow threaded columns and hanging columns. The hollow threaded columns are connected by threads at the four corner positions of the installation plate, and a hanging column is arranged at the upper part of the front side of the installation plate. The electric energy meter is suspended on the hanging column.

[0009] As a preferred technical solution of the present invention, the rear protection structure includes a rear cover and a protection gasket. Protection gaskets are arranged at the four corner positions of the contact surface between the rear cover and the installation plate.

[0010] As a preferred technical solution of the present invention, an automatic clamping component is further included. An automatic clamping component is connected between the lower part of the protective cover and the rear cover. The automatic clamping component includes a straight pressure rod, a rotating bar and a clamping shaft. Straight pressure rods extending backward are fixedly connected to the left and right sides of the protective cover. A rotating bar is rotatably arranged on the rear cover at the rear side of the straight pressure rod. A strip-shaped hole is formed in the front part of the rotating bar. Clamping shafts are arranged on the outer sides of the sliders, and the clamping shafts pass through the adjacent strip-shaped holes.

[0011] As a preferred technical solution of the present invention, a heat prevention structure is further included. The heat prevention structure is arranged at the upper part of the rear cover. The heat prevention structure includes heat dissipation fins, a shielding cover, an air inlet cover, a filter plate and a heat dissipation fan. Heat dissipation fins are arranged inside the rear cover. A row of ventilation holes are formed in the upper wall of the rear cover. A shielding cover is arranged on the rear cover above the ventilation holes. Heat dissipation fans are fixedly connected to the lower part inside the shielding cover. An air inlet cover is arranged at the top of the shielding cover. The outlet of the air inlet cover faces forward. A filter plate is arranged at the outlet of the air inlet cover. By controlling the operation of the heat dissipation fan.

[0012] As a preferred technical solution of the present invention, an anti-misoperation opening mechanism is further included. The anti-misoperation opening mechanism is arranged at the front side of the rotating connection of the protective cover. The anti-misoperation opening mechanism includes a hollow column, a second spring and a limiting column. Hollow columns are arranged at the front side of the rotating connection of the protective cover. Limiting columns are slidably connected inside the hollow columns. A second spring is connected between the limiting column and the hollow column. The outer end of the limiting column is at the front side of the rotating connection of the protective cover.

[0013] As a preferred technical solution of the present invention, a separator is further included. The separator is detachably arranged at the lower part of the rear cover, and the separator is located at the front side of the wiring port of the electric energy meter.

[0014] Compared with the prior art, the present invention has the following advantages: Through the cooperation of the wiring protection structure and the clamping structure, when the bolts at the wiring port are loose, the wires will not fall off, making the electricity meter safer. The flexible gasket can prevent the wavy pressure rod and the upper arc-shaped pressing piece from damaging the wires; the protective cover is fixed by the hidden limit posts, preventing non-staff from easily opening the protective cover and thus avoiding safety accidents; during the operation of the electricity meter, if the heat is too high, the cooling fan can be controlled to operate, and the heat inside the electricity meter is conducted to the heat dissipation fins and then taken away by the cooling fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0016] Figure 2 It is a three-dimensional structure schematic diagram of the present invention after the protective cover is opened.

[0017] Figure 3 For the present invention Figure 2 A three-dimensional structure schematic diagram from another perspective.

[0018] Figure 4 It is a three-dimensional structure schematic diagram of the electricity meter of the present invention.

[0019] Figure 5 It is a three-dimensional structure schematic diagram of the clamping structure and the automatic clamping component of the present invention.

[0020] Figure 6 It is an enlarged view of the clamping structure and the automatic clamping component of the present invention.

[0021] Figure 7 It is a three-dimensional structure schematic diagram of the heat prevention structure of the present invention.

[0022] Figure 8 For the present invention Figure 7 Explosion diagram.

[0023] Figure 9 For the present invention Figure 7 A three-dimensional structure schematic diagram from another perspective.

[0024] Figure 10 It is a three-dimensional structure schematic diagram of the anti-misoperation opening mechanism of the present invention.

[0025] Figure 11 For the present invention Figure 10 An enlarged view of part A in the present invention.

[0026] Attached reference numerals: 1 - mounting carrier, 11 - mounting plate, 12 - hollow threaded column, 13 - hanging column, 2 - rear protection structure, 21 - rear cover, 22 - protective washer, 3 - front shell, 4 - wiring protection structure, 41 - protective cover, 42 - hexagon socket head bolt, 43 - upper arc-shaped pressing piece, 44 - arc-shaped clamping groove, 5 - clamping structure, 51 - guiding column, 52 - slider, 53 - first spring, 54 - wavy pressing rod, 55 - flexible gasket, 6 - automatic clamping component, 61 - straight pressing rod, 62 - rotating bar, 63 - strip-shaped hole, 64 - clamping shaft, 7 - heat prevention structure, 71 - heat dissipation fin, 72 - shielding cover, 73 - air intake cover, 74 - filter plate, 75 - heat dissipation fan, 8 - anti-misoperation opening mechanism, 81 - hollow column, 82 - second spring, 83 - limiting column, 9 - isolation sheet. Detailed implementation manners

[0027] The following describes the implementation manners of the present invention with reference to the accompanying drawings.

[0028] Embodiment: An electric energy meter with a safety protection function, as Figures 1 - 6 shown, the electric energy meter is installed on the front side of the mounting carrier 1 in a hanging manner. The outer surface of the electric energy meter is composed of a rear protection structure 2, a front shell 3, a protection structure, and a clamping structure 5. The rear protection structure 2 and the front shell 3 are fixed by means of clamping and bolts. The protection structure is connected to the lower part of the front shell 3 in a rotating manner. A clamping structure 5 is arranged on the rear protection structure 2 at the rear side of the protection structure. The clamping structure 5 cooperates with the protection structure to fix the wire.

[0029] As Figure 8 and Figure 9 shown, the mounting carrier 1 includes a mounting plate 11, a hollow threaded column 12, and a hanging column 13. The mounting plate 11 is installed on the wall where the electric energy meter is installed. The hollow threaded columns 12 are threadedly connected to the four corner positions of the mounting plate 11. Nails are passed through the hollow threaded columns 12 to fix the mounting plate 11 on the wall. By screwing the hollow threaded columns 12, the distance between the mounting plate 11 and the wall can be adjusted. At the same time, when the wall is uneven, by changing the positions of the hollow threaded columns 12, the mounting plate 11 can be vertically installed with respect to the ground, so as to ensure that the electric energy meter is vertically installed with respect to the ground. When vertically installed, the electrical components inside the electric energy meter maintain their normal working positions and states, reducing potential safety hazards caused by component displacement or poor contact. The wiring terminals and connecting wires inside the electric energy meter can maintain good contact, avoiding loosening and falling off of the wires due to inclination, thereby preventing safety accidents such as short circuits and electric leakage. In addition, vertical installation also facilitates the heat dissipation of the electric energy meter, avoiding damage to internal components due to heat accumulation, and further ensuring the use safety. A hanging column 13 is arranged on the upper part of the front side of the mounting plate 11, and the electric energy meter is hung on the hanging column 13.

[0030] As Figure 9As shown in the figure, the rear protection structure 2 includes a rear cover 21 and a protective washer 22. Protective washers 22 are provided at the four corner positions of the contact surface between the rear cover 21 and the mounting plate 11. The rear cover 21 is separated from the mounting plate 11 by the protective washers 22, enabling the entire electricity meter to dissipate heat more conveniently and protecting the electricity meter at the same time.

[0031] As Figure 5 and Figure 6 shown in the figure, the wiring protection structure 4 includes a protective cover 41, an internal hexagonal bolt 42, and an upper arc-shaped pressing piece 43. A protective cover 41 is rotatably provided at the lower part of the front side of the front shell 3. The protective cover 41 can be fixed to the front shell 3 through the internal hexagonal bolt 42 to cover the wiring port of the electricity meter. A concave wire passing groove is provided at the lower part of the protective cover 41. Wires are connected to the electricity meter by passing through the wire passing groove. Upper arc-shaped pressing pieces 43 are provided on the front walls of the wire passing groove. An arc-shaped clamping groove 44 is provided at the position of the upper arc-shaped pressing piece 43 close to the electricity meter interface.

[0032] As Figure 5 and Figure 6 shown in the figure, the clamping structure 5 includes a guide post 51, a slider 52, a first spring 53, a wavy pressing rod 54, and a flexible gasket 55. Guide posts 51 extending forward are provided on both the left and right sides of the bottom of the rear cover 21. A slider 52 is slidably connected between the guide posts 51. A first spring 53 is connected between the slider 52 and the rear end of the guide post 51. A wavy pressing rod 54 is connected between the sliders 52. The undulating parts of the wavy pressing rod 54 are symmetrically arranged with the arched parts of the upper arc-shaped pressing piece 43 in the front and rear directions. The wavy pressing rod 54 is located behind the arc-shaped clamping groove 44. A flexible gasket 55 is provided on the front side of the wavy pressing rod 54. The wires leaking outside the electricity meter can be clamped by the wavy pressing rod 54 and the upper arc-shaped pressing piece 43.

[0033] As Figure 5 and Figure 6 shown in the figure, an automatic clamping component 6 is further included. An automatic clamping component 6 is connected between the lower parts of the protective cover 41 and the rear cover 21. The automatic clamping component 6 includes a straight pressing rod 61, a rotating bar 62, and a clamping shaft 64. Straight pressing rods 61 extending backward are fixedly connected to both the left and right sides of the protective cover 41. A rotating bar 62 is rotatably provided on the rear cover 21 at the rear side of the straight pressing rod 61. The upper part of the rotating bar 62 contacts the rear end of the straight pressing rod 61. A strip-shaped hole 63 is provided at the front part of the rotating bar 62. The strip-shaped hole 63 is located outside the slider 52. Clamping shafts 64 are provided on the outer sides of the sliders 52. The clamping shafts 64 pass through the adjacent strip-shaped holes 63.

[0034] As Figures 7 - 9As shown in the figure, it further includes a heat protection structure 7. A heat protection structure 7 is provided on the upper part of the rear cover 21. The heat protection structure 7 includes heat dissipation fins 71, a shielding cover 72, an air intake cover 73, a filter plate 74, and a heat dissipation fan 75. Heat dissipation fins 71 are arranged inside the rear cover 21. The front side of the heat dissipation fins 71 is used to install electronic components in the electricity meter. A row of ventilation holes are opened on the upper wall of the rear cover 21. A shielding cover 72 is provided on the rear cover 21 above the ventilation holes. Heat dissipation fans 75 are fixedly connected to the lower part inside the shielding cover 72. An air intake cover 73 is provided on the top of the shielding cover 72. The outlet of the air intake cover 73 faces the front side to prevent dust from falling into the electricity meter from above the shielding cover 72. A filter plate 74 is provided at the outlet of the air intake cover 73 for filtering dust in the air. By controlling the operation of the heat dissipation fan 75, the heat generated during the operation of the electricity meter is transferred to the heat dissipation fins 71, and the fan blows away the heat on the heat dissipation fins 71, thereby dissipating heat from the electricity meter.

[0035] As Figure 10 and Figure 11 As shown in the figure, it further includes an anti-misoperation opening mechanism 8. An anti-misoperation opening mechanism 8 is provided on the front side of the rotation connection of the protective cover 41. The anti-misoperation opening mechanism 8 includes a hollow column 81, a second spring 82, and a limit column 83. Hollow columns 81 are provided on the front side of the rotation connection of the protective cover 41. Limit columns 83 are slidably connected inside the hollow columns 81. A second spring 82 is connected between the limit column 83 and the hollow column 81. The outer end of the limit column 83 is on the front side of the rotation connection of the protective cover 41.

[0036] As Figure 3 As shown in the figure, it further includes an isolation piece 9. An isolation piece 9 is detachably provided at the lower part of the rear cover 21. The isolation piece 9 is located on the front side of the wiring port of the electricity meter for isolating the wiring ports on the front and rear sides to prevent interference.

[0037] When installing the electric energy meter, first adjust the position of the hollow threaded column 12 so that the mounting plate 11 can be vertically installed on the front surface of the ground. After the position of the hollow threaded column 12 is adjusted, fix the mounting plate 11 on the wall by driving a nail through the hollow threaded column 12. Then, hang the electric energy meter on the hanging column 13. Subsequently, wiring can be started. At this time, first unscrew the hexagon socket head bolt 42, and at the same time press the limit post 83 inward. The second spring 82 is compressed. When the limit post 83 leaves the front side of the protective cover 41, rotate the protective cover 41 to open it. The wiring port I and the wiring port III are used to connect the live wire and the neutral wire of the incoming line, and the wiring port II and the wiring port IV are used to connect the live wire and the neutral wire of the outgoing line. After the wires are connected, rotate the protective cover 41 downward to reset it, so that the straight pressure rod 61 rotates backward. When the straight pressure rod 61 rotates backward to contact the rotating bar 62, it pushes the upper part of the rotating bar 62 to move backward, and the rear part of the rotating bar 62 rotates forward. At this time, drive the slider 52 and the corrugated pressure rod 54 to move forward through the strip hole 63 and the clamping shaft 64. The first spring 53 is stretched. At this time, the corrugated pressure rod 54 and the upper arc-shaped pressing piece 43 are closed to clamp the exposed part of the wire. In this way, if the bolts at the wiring port are loose, the wire will not fall off, and the electric energy meter is safer. The flexible gasket 55 can prevent the corrugated pressure rod 54 and the upper arc-shaped pressing piece 43 from pressing and damaging the wire. Then, release the limit post 83, and the second spring 82 resets, driving the limit post 83 back to the front of the rotation point of the protective cover 41, so that the protective cover 41 cannot be rotated forward to open. Then, tighten the hexagon socket head bolt 42 to reinforce the protective cover 41. Fix the protective cover 41 through the hidden limit post 83, so that non-staff members cannot easily open the protective cover 41, thus preventing the occurrence of safety accidents. During the operation of the electric energy meter, if the heat is too high, the cooling fan 75 can be controlled to work. The heat inside the electric energy meter is conducted to the heat dissipation fins 71 and then taken away by the cooling fan 75.

[0038] Although the present disclosure has been described only with respect to a limited number of embodiments, those skilled in the art who benefit from the present disclosure will understand that various other embodiments can be designed without departing from the scope of the present invention. Therefore, the scope of the present invention should be limited only by the appended claims.

Claims

1. An electric energy meter with a safety protection function, the electric energy meter is installed on the front side of a carrier (1) by hanging, the outer surface of the electric energy meter is composed of a rear protection structure (2), a front shell (3), a protection structure and a clamping structure (5), and is characterized in that: The wiring protection structure (4) comprises a protection cover (41), a hexagon socket bolt (42) and an upper arc-shaped pressing piece (43). The protection cover (41) is rotatably arranged at the lower front side of the front shell (3). The protection cover (41) can be fixed to the front shell (3) by means of the hexagon socket bolt (42). A concave wire threading groove is provided at the lower part of the protection cover (41). The upper arc-shaped pressing piece (43) is provided at the front wall of the wire threading groove. The upper arc-shaped pressing piece (43) is provided with an arc-shaped clamping groove (44) at a position close to the interface of the electric energy meter. The clamping structure The structure (5) comprises a guide column (51), a slider (52), a first spring (53) and a wavy pressure rod (54). The left and right sides of the bottom of the rear cover (21) are both provided with guide columns (51) extending toward the front side. The sliders (52) are slidably connected between the guide columns (51). The first spring (53) is connected between the sliders (52) and the rear ends of the guide columns (51). The wavy pressure rod (54) is connected between the sliders (52). The wavy pressure rod (54) is located at the rear side of the arc-shaped slot (44).

2. The electric energy meter with safety protection function according to claim 1 is characterized in that: The clamping structure (5) further comprises a flexible gasket (55), and the flexible gasket (55) is arranged on the front side of the wave-shaped pressure rod (54).

3. The electric energy meter with safety protection function according to claim 1 is characterized in that: The mounting carrier (1) comprises a mounting plate (11), a hollow threaded column (12) and a hanging column (13); the four corners of the mounting plate (11) are connected with the hollow threaded column (12) via threads; the hanging column (13) is arranged on the upper front side of the mounting plate (11); and the electric energy meter is hung on the hanging column (13).

4. The electric energy meter with safety protection function according to claim 3 is characterized in that: The rear protective structure (2) comprises a rear cover (21) and a protective gasket (22), and the protective gaskets (22) are arranged at four corners of the contact surface between the rear cover (21) and the mounting plate (11).

5. The electric energy meter with safety protection function according to claim 4 is characterized in that: The invention also comprises an automatic clamping component (6), wherein the automatic clamping component (6) is connected between the protective cover (41) and the lower part of the rear cover (21), and the automatic clamping component (6) comprises a straight pressure rod (61), a rotating bar (62) and a clamping shaft (64). The left and right sides of the protective cover (41) are fixedly connected with straight pressure rods (61) extending toward the rear side, and a rotating bar (62) is rotatably provided on the rear cover (21) behind the straight pressure rod (61), and a strip hole (63) is opened at the front of the rotating bar (62). The outer side of the slider (52) is provided with a clamping shaft (64), and the clamping shaft (64) passes through its adjacent strip hole (63).

6. The electric energy meter with safety protection function according to claim 5 is characterized in that: The heat protection structure (7) is also included. The upper part of the rear cover (21) is provided with the heat protection structure (7). The heat protection structure (7) includes heat dissipation fins (71), a shielding cover (72), an air intake cover (73), a filter plate (74) and a heat dissipation fan (75). The heat dissipation fins (71) are provided in the rear cover (21). The upper wall of the rear cover (21) is provided with a row of ventilation holes. The rear cover (21) is provided with a shielding cover (72) above the ventilation holes. The lower part of the shielding cover (72) is fixedly connected with the heat dissipation fan (75). The top of the shielding cover (72) is provided with an air intake cover (73). The outlet of the air intake cover (73) faces the front side. The outlet of the air intake cover (73) is provided with a filter plate (74). The heat dissipation fan (75) works by controlling the heat dissipation fan (75).

7. The electric energy meter with safety protection function according to claim 6 is characterized in that: The invention also comprises an anti-accidental touch opening mechanism (8), wherein the anti-accidental touch opening mechanism (8) is arranged at the front side of the rotation connection of the protective cover (41), and the anti-accidental touch opening mechanism (8) comprises a hollow column (81), a second spring (82) and a limit column (83), wherein the hollow column (81) is arranged at the front side of the rotation connection of the protective cover (41), the limit column (83) is slidably connected inside the hollow column (81), the second spring (82) is connected between the limit column (83) and the hollow column (81), and the outer end of the limit column (83) is located at the front side of the rotation connection of the protective cover (41).

8. The electric energy meter with safety protection function according to claim 7 is characterized in that: It also includes an isolation sheet (9), the lower part of the rear cover (21) is detachably provided with the isolation sheet (9), and the isolation sheet (9) is located at the front side of the connection port of the electric energy meter.

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