Dustproof three-phase watt-hour meter

Abstract

The utility model relates to a dustproof three-phase watt-hour meter, which comprises a watt-hour meter main body and a shielding cover, a plurality of connecting ports are arranged at the bottom of the watt-hour meter main body, the shielding cover is matched with the watt-hour meter main body in an inserting manner, the connecting ports are positioned in the shielding cover, and the dustproof three-phase watt-hour meter further comprises a dustproof plate, a receding groove is formed in the position, corresponding to each connecting port, of the bottom of the shielding cover, the number of the dustproof plates is consistent with that of the connecting ports, the dustproof plates are hinged to the shielding cover in the shielding cover, and hinge shafts of the dustproof plates are located on the sides, opposite to the mounting wall face, of the receding grooves. The size of the dustproof plate is larger than that of the receding groove. The dustproof three-phase watt-hour meter provided by the utility model can control the opening and closing of the notches of the shielding cover according to the actual wiring number.

Description

Technical Field

[0001] The utility model relates to the technical field of watt-hour meters, in particular to a dustproof three-phase watt-hour meter. Background Art

[0002] The three-phase electricity meter is suitable for measuring three-phase four-wire AC active electrical energy with a rated frequency of 50Hz or 60Hz. It is designed for fixed installation indoors and suitable for an environment with air that does not contain corrosive gases and avoids the influence of dust, mold, smoke, condensation, insects, etc. Choose a dry and ventilated place. The base plate of the electricity meter should be placed on a solid, fire-resistant wall that is not easily affected by moisture and vibration. The recommended installation height of the electricity meter is about 1.8m. After installation, the electricity meter should be vertical and not tilted.

[0003] There are several interfaces for wiring at the bottom of the three-phase electricity meter. At the same time, a shielding cover is set at the bottom of the three-phase electricity meter to cover the interface position. However, because the interface needs to be plugged in, a groove is still set at the bottom of the shielding cover to make room for the line. Therefore, the interface is not necessarily fully plugged in, so the space between the groove and the line will be very large, and dust or flying insects can easily enter from this position. Utility Model Content

[0004] In summary, in order to overcome the deficiencies of the prior art, the present invention provides a dustproof three-phase watt-hour meter capable of controlling the opening and closing of the notches of the shielding cover according to the actual number of connections.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dustproof three-phase electricity meter, comprising an electricity meter body and a shielding cover, wherein a plurality of connection ports are provided at the bottom of the electricity meter body, the shielding cover is plugged into the electricity meter body, the connection ports are located inside the shielding cover, and further comprising a dustproof plate, wherein a clearance groove is provided at the bottom of the shielding cover corresponding to the position of each connection port, the number of the dustproof plates is consistent with the number of the connection ports, the dustproof plate is hinged to the inside of the shielding cover, the hinge axis of the dustproof plate is located on the side of the clearance groove facing away from the installation wall, and the size of the dustproof plate is larger than the clearance groove.

[0006] With this arrangement, when no wiring is connected, each dustproof plate will fall down due to gravity and cover the giveway slot, thus preventing dust or flying insects from entering. After the line is inserted into the connector, the dustproof plate can be lifted up at the corresponding position, so that the line can be stored in the giveway slot. After installation, the dustproof plate will also cover the outer skin of the line and will not affect its installation and use. After the line is pulled out, the dustproof plate will fall down again to block the giveway slot, and the giveway slot will not be fully opened. The giveway slot can be opened at the position where wiring is required according to actual wiring, reducing the opening area of ​​the giveway slot, having a good dustproof effect, and the shielding cover can be connected with bolts.

[0007] Furthermore, inclined supporting plates are respectively provided at positions on both sides of the giving way groove in the shielding cover, and the inclined supporting plates are raised toward the direction of the installation wall.

[0008] With this arrangement, the inclined support plate can raise the angle of the dustproof plate, making it in an inclined state. In this way, when there is a line at the corresponding position after the connection port is wired, you only need to directly install the shielding cover, and the line will hit the inclined dustproof plate and lift it up along the inclined surface. No manual operation is required, and it is easy to use.

[0009] Furthermore, the angle between the inclined support plate and the hinge axis of the dustproof plate is an acute angle.

[0010] This arrangement ensures that the dustproof plate can fall onto the inclined support plate by gravity and will not fall to the other side.

[0011] Furthermore, one end of the dustproof plate facing the installation wall is in the shape of an arc that is bent away from the installation wall, and the position of the inclined support plate corresponding to the arc is in the shape of an arc that is adapted thereto.

[0012] With this arrangement, when the shielding cover is installed, the arc surface contacts the line, making it easier to lift the shielding cover without breaking the outer skin of the line.

[0013] Furthermore, a circular head is provided at one end of the dustproof plate facing the installation wall, and an outer wall of the circular head is arranged tangent to the arc surface of the dustproof plate on the side facing away from the safety wall.

[0014] With this arrangement, the round head can eliminate the sharp edge of the dustproof plate end, completely eliminating the possibility of the sharp edge scratching the circuit outer skin, and the round head being tangent to the arc surface will not affect its lifting during installation.

[0015] Furthermore, a gap is provided between the dustproof plate and the installation wall.

[0016] With this arrangement, the dustproof plate will not hit the installation wall. Although there is a gap between the two, it ensures that the clearance groove is pressed down to prevent dust from entering as much as possible.

[0017] Furthermore, a coaxial hinge joint is provided on both sides of one hinged end of the dustproof plate, and hinge blocks are provided on both sides of the clearance groove in the shielding cover, and the hinge joint is hinged to the hinge block.

[0018] With this arrangement, the dustproof plate can be hinged by inserting the hinge joint into the hinge block. Since the dustproof plate is not a load-bearing part, the strength of the hinge does not need to be too high, and the hinge joint is sufficient. The hinge joint is convenient for installation in places with small space, and adjacent hinge blocks can also be combined into one piece.

[0019] Furthermore, the hinge block is provided with a hinge groove adapted to the hinge head, the hinge groove is opened toward the installation wall, and the width of the opening is smaller than the diameter of the hinge groove.

[0020] With such arrangement, the hinge groove provided with the hinge block will be in a C-shaped shape. During installation, the hinge head can be simply aligned and inserted to complete the installation, which is convenient for installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the embodiment of the utility model is shown in FIG. Figure 1 .

[0022] Figure 2 The structure of the embodiment of the utility model is shown in FIG. Figure 2 .

[0023] Figure 3 It is a partial exploded view of an embodiment of the present utility model.

[0024] Figure 4 Based Figure 3 Magnified view of part A.

[0025] The meaning of the numbers in the figure are: 1. Electricity meter body, 101. Connection port, 2. Shielding cover, 201. Make way slot, 202. Inclined support plate, 203. Hinge block, 2031. Hinge slot, 3. Dustproof plate, 301. Round head, 302. Hinge head. DETAILED DESCRIPTION

[0026] This specific embodiment is merely an explanation of this embodiment and is not a limitation of this embodiment. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of this embodiment, they are protected by patent law.

[0027] Referring to the accompanying drawings, the present invention provides the following technical solutions: a dustproof three-phase electricity meter, comprising an electricity meter body 1 and a shielding cover 2, wherein a plurality of connection ports 101 are provided at the bottom of the electricity meter body 1, the shielding cover 2 is plugged into the electricity meter body 1, and the connection ports 101 are located inside the shielding cover 2, and further comprising a dustproof plate 3, a clearance groove 201 is provided at the bottom of the shielding cover 2 corresponding to the position of each connection port 101, the number of the dustproof plates 3 is consistent with the number of the connection ports 101, the dustproof plates 3 are hinged to the inside of the shielding cover 2, the hinge axis of the dustproof plate 3 is located on the side of the clearance groove 201 facing away from the installation wall, and the size of the dustproof plate 3 is larger than the clearance groove 201.

[0028] With such arrangement, when no wiring is being done, each dustproof plate 3 will fall down due to gravity and cover the giveway slot 201, thus preventing dust or flying insects from entering. After the line is inserted into the connector 101, the dustproof plate 3 can be lifted up at the corresponding position, so that the line can be stored in the giveway slot 201. After installation, the dustproof plate 3 will also cover the outer skin of the line and will not affect its installation and use. After the line is pulled out, the dustproof plate 3 will fall down again to block the giveway slot 201, and the giveway slot 201 will not be fully opened. The giveway slot 201 can be opened at the position where wiring is required according to actual wiring, thereby reducing the opening area of ​​the giveway slot 201, and having a good dustproof effect. The shielding cover 2 can be connected with bolts.

[0029] Preferably, in this embodiment, inclined supporting plates 202 are provided on both sides of the making way slot 201 in the shielding cover 2, and the inclined supporting plates 202 are raised toward the direction of the mounting wall.

[0030] With this arrangement, the inclined support plate 202 can raise the angle of the dustproof plate 3, making it in an inclined state. In this way, when there is a line at the corresponding position after the connection port 101 is connected, it is only necessary to directly install the shielding cover 2, and the line will push against the inclined dustproof plate 3 and lift it up along the inclined surface. No manual operation is required, and it is easy to use.

[0031] Preferably, in this embodiment, the angle between the inclined support plate 202 and the hinge axis of the dustproof plate 3 is an acute angle.

[0032] This arrangement ensures that the dustproof plate 3 can fall on the inclined support plate 202 by gravity and will not fall to the other side.

[0033] Preferably, in this embodiment, the end of the dustproof plate 3 facing the installation wall is in an arc shape that is bent away from the installation wall, and the position of the inclined support plate 202 corresponding to the arc shape is in an arc shape that matches it.

[0034] With this arrangement, when the shielding cover 2 is installed, the arc surface contacts the circuit, making it easier to lift the shielding cover 2 without breaking the outer skin of the circuit.

[0035] Preferably, in this embodiment, a circular head 301 is provided at one end of the dustproof plate 3 facing the installation wall, and the outer wall of the circular head 301 is tangent to the arc surface of the dustproof plate 3 on the side facing away from the safety wall.

[0036] With this arrangement, the round head 301 can eliminate the sharp edge at the end of the dustproof plate 3, completely eliminating the possibility of the sharp edge scratching the circuit outer skin, and the round head 301 being tangent to the arc surface will not affect its being lifted up during installation.

[0037] Preferably, in this embodiment, a gap is provided between the dustproof plate 3 and the installation wall.

[0038] With this arrangement, the dustproof plate 3 will not hit the installation wall. Although there is a gap between the two, it ensures that the clearance groove 201 is pressed down to avoid dust from entering as much as possible.

[0039] In this embodiment, preferably, a coaxial hinge joint 302 is provided on both sides of one hinged end of the dustproof plate 3, and a hinge block 203 is provided on both sides of the clearance groove 201 in the shielding cover 2, and the hinge joint 302 is hingedly arranged with the hinge block 203.

[0040] With such arrangement, the dustproof plate 3 can be hinged by inserting the hinge joint 302 on the hinge block 203. Since the dustproof plate 3 is not a load-bearing part, the hinge strength does not need to be too high, and the hinge joint 302 is sufficient. The hinge joint 302 is convenient for installation in places with small space, and adjacent hinge blocks 203 can also be combined into one piece.

[0041] Preferably, in this embodiment, the hinge block 203 is provided with a hinge slot 2031 adapted to the hinge head 302 , the hinge slot 2031 is opened toward the installation wall, and the width of the opening is smaller than the diameter of the hinge slot 2031 .

[0042] With such arrangement, the hinge groove 2031 of the hinge block 203 will be in a C-shape. During installation, the hinge head 302 can be simply aligned and inserted to complete the installation, which is convenient for installation.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, the scope of protection of the present invention is not limited thereto. Any equivalent replacement or change made by any technician familiar with the technical field within the technical scope disclosed by the present invention according to the technical solution and the utility model concept of the present invention should be covered by the scope of protection of the present invention.

Claims

1. A dustproof three-phase watt-hour meter, comprising a meter body and a shield, wherein the bottom of the meter body is provided with a plurality of connection ports, the shield being pluggable with the meter body, the connection ports being located within the shield, and characterized in that: It also includes a dustproof plate, and a clearance groove is provided at the bottom of the shielding cover corresponding to the position of each connecting port. The number of the dustproof plates is consistent with the number of the connecting ports. The dustproof plate is hinged to the shielding cover inside, and the hinge axis of the dustproof plate is located on the side of the clearance groove facing away from the installation wall. The size of the dustproof plate is larger than the clearance groove.

2. The dustproof three-phase watt-hour meter according to claim 1, characterized in that: Inclined supporting plates are respectively provided at positions on both sides of the giving way groove in the shielding cover, and the inclined supporting plates are raised toward the direction of the installation wall.

3. The dustproof three-phase watt-hour meter according to claim 2, characterized in that: The angle between the inclined support plate and the hinge axis of the dustproof plate is an acute angle.

4. The dustproof three-phase watt-hour meter according to claim 2, characterized in that: One end of the dustproof plate facing the installation wall is in an arc shape that is bent away from the installation wall.

5. The dustproof three-phase watt-hour meter according to claim 4, characterized in that: A circular head is provided on one end of the dustproof plate facing the installation wall, and an outer wall of the circular head is arranged tangent to the arc surface of the dustproof plate on a side facing away from the safety wall.

6. The dustproof three-phase watt-hour meter according to claim 1, characterized in that: A gap is provided between the dustproof plate and the installation wall.

7. The dustproof three-phase watt-hour meter according to claim 1, characterized in that: A coaxial hinged joint is provided on both sides of one hinged end of the dustproof plate, and hinge blocks are provided on both sides of the clearance groove in the shielding cover, and the hinged joint is hinged to the hinge blocks.

8. The dustproof three-phase watt-hour meter according to claim 7, characterized in that: The hinge block is provided with a hinge groove adapted to the hinge head, the hinge groove is opened toward the installation wall, and the width of the opening is smaller than the diameter of the hinge groove.

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