Guide cover for bypass tool for electricity meter

Abstract

To provide a guide cover of a bypass tool for an electricity meter that can reliably prevent misalignment when a new meter is inserted into a terminal block, and can prevent the occurrence of a short circuit between different phases caused by misalignment.SOLUTION: A guide cover 100 of the bypass tool for the electricity meter according to the present invention is attached to a bypass tool 30 for short-circuiting terminals of a terminal block 20 to / from which a meter 10 of the electricity meter is attached / detached, and includes: a mounting part mounted on the bypass tool 30; a pair of guide walls 120 extending above the bypass tool 30 to guide the sides of the meter; and a front guide 130 bridging the guide walls 120 and guiding the front of the meter 10.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a guide cover for a bypass tool for an electricity meter, which guides a meter of the electricity meter when attaching or detaching it to or from a terminal block. [Background technology]

[0002] In recent years, electronic watt-hour meters equipped with communication functions, so-called smart meters, have become widespread as watt-hour meters. Not only smart meters, but all watt-hour meters must be replaced before the certification expiration date (for example, 10 years) expires. However, with older watt-hour meters than smart meters, the watt-hour meter must be completely removed before replacement can be performed, which causes temporary power outages and places a burden on consumers.

[0003] In contrast, smart meters have detachable meters attached to the terminal blocks. This means that the meters can be removed from the terminal blocks and replaced alone. For example, by using a bypass tool for electricity meters as disclosed in Patent Document 1, it is possible to replace the meters of smart meters without power interruption.

[0004] As disclosed in Patent Document 1, the watt-hour meter bypass tool includes two bus bars that short-circuit two pairs of terminals provided on the terminal block of the watt-hour meter. This allows the meter to be replaced without power interruption by shorting the terminal block when replacing the meter. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2016-080687 A Summary of the Invention [Problem to be solved by the invention]

[0006] As described above, the meter of a smart meter can be replaced without power interruption by using the bypass tool for an electricity meter disclosed in Patent Document 1. However, if the new meter cannot be accurately positioned when being inserted into the terminal block, a short circuit between different phases may occur, which may lead to an accident.

[0007] In view of such problems, the present invention aims to provide a guide cover for a bypass tool for an electricity meter that can reliably prevent misalignment when inserting a new meter into a terminal block, and can prevent the occurrence of short circuits between different phases due to misalignment. [Means for solving the problem]

[0008] In order to solve the above problems, a representative configuration of a guide cover for a bypass tool for an electric power meter according to the present invention is a guide cover for a bypass tool for an electric power meter that is attached to the bypass tool for an electric power meter, which shorts the terminals of a terminal block to which a meter of the electric power meter is attached and detached, and is characterized in that it comprises an attachment portion that is attached to the bypass tool for an electric power meter, a pair of guide wall portions that extend upward from the bypass tool for an electric power meter and guide the sides of the meter, and a front guide that is spanned across the guide wall portions and guides the front surface of the meter.

[0009] According to the above-mentioned configuration, the pair of guide walls can regulate the widthwise position of the measuring device. Furthermore, the front guide can regulate the depthwise position of the measuring device. Therefore, the measuring device can be accurately positioned, and it is possible to reliably prevent a short circuit between different phases caused by misalignment.

[0010] The mounting portion may have a claw portion that engages with a side surface of the bypass tool for the watt-hour meter. With this configuration, the guide cover can be easily attached to the bypass tool, thereby simplifying the work process. Effect of the Invention

[0011] According to the present invention, it is possible to provide a guide cover for a bypass tool for an electricity meter that can reliably prevent misalignment when inserting a new meter into a terminal block, and can prevent the occurrence of short circuits between different phases due to misalignment. [Brief description of the drawings]

[0012] [Figure 1] FIG. 2 is an exploded perspective view illustrating a guide cover of the watt-hour meter bypass tool of the present embodiment. [Diagram 2] FIG. [Diagram 3] FIG. 13 is a diagram illustrating the attachment of a meter to a terminal block. [Figure 4] FIG. 13 is a diagram illustrating a short circuit between different phases in the width direction of the meter. [Diagram 5] FIG. 13 is a diagram illustrating a short circuit between different phases in the depth direction of the meter. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific values ​​shown in the embodiment are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same functions and configurations are given the same reference numerals to avoid repeated explanations, and elements not directly related to the present invention are not shown.

[0014] Fig. 1 is an exploded perspective view illustrating a guide cover 100 (hereinafter referred to as guide cover 100) of a bypass tool for an electricity meter (hereinafter referred to as bypass tool 30) according to this embodiment. Fig. 2 is an overall perspective view of the guide cover 100.

[0015] The meter 10 shown in Fig. 1 is attached to a terminal block 20 and energized during operation. Three electric wires drawn from a system and three indoor wiring (not shown) are connected to terminals 22 of the terminal block 20. When replacing the meter 10 shown in Fig. 1, first, a bypass tool 30 is attached to the terminal block 20, and the meter 10 to be replaced is removed from the terminal block 20. A guide cover of the bypass tool for watt-hour meters of this embodiment is attached to the bypass tool 30 in advance, and serves as a guide when mounting a new meter 10 on the terminal block 20.

[0016] Bus bars 32a and 32b are built into the bypass tool 30. Two pairs of terminals 34a and 34b, 36a and 36b connected to the bus bars 32a and 32b, respectively, are connected to the terminals 22 of the terminal block 20, thereby shorting the terminal block 20. This allows the measuring device 10 to be replaced in an uninterruptible state.

[0017] The guide cover 100 shown in Fig. 1 is attached to a bypass tool 30 that shorts the terminals of a terminal block 20 to which a meter 10 of an electricity meter is attached and detached. As shown in Figs. 1 and 2, the guide cover 100 of this embodiment has an attachment portion 110 that is attached to the bypass tool 30.

[0018] 2, in this embodiment, the mounting portion 110 has a claw portion 122 that engages with a side surface of the bypass tool 30. This allows the guide cover 100 to be easily integrated with the bypass tool 30, thereby simplifying the work process.

[0019] 3 is a diagram illustrating the mounting of the measuring device 10 to the terminal block 20. In the present embodiment 100, the mounting section 110 is provided with a pair of guide wall sections 120 extending upward. As a feature of the present invention, a front guide 130 is provided between the pair of guide wall sections 120 to guide the front surface 10b of the measuring device 10.

[0020] The guide wall portion 120 extends to above the bypass tool 30 and guides the side surface 10a of the measuring device 10. This makes it possible to regulate the position of the measuring device 10 in the width direction.

[0021] Fig. 4 is a diagram illustrating a phase-to-phase short circuit in the width direction of the meter. As shown in Fig. 4(a), if the guide cover 100 is not used, the meter 10 will be misaligned in the width direction. This will cause the terminal of the meter 10 to come into contact with the terminal adjacent to the corresponding terminal of the terminal block 20, resulting in a phase-to-phase short circuit as shown in Fig. 4(b). In response to this, the guide wall portion 120 is provided to restrict the misalignment in the width direction, and it is possible to suitably prevent a phase-to-phase short circuit caused by such misalignment.

[0022] However, the guide wall portion 120 alone cannot reliably prevent short circuits.

[0023] Fig. 5 is a diagram for explaining a short circuit between different phases in the depth direction of the meter 10. If the guide cover 50 only has the guide wall portion 120 as shown in Fig. 5(a), positioning in the width direction is possible. However, if the meter 10 rotates in the depth direction relative to the terminal block 20 as shown in Fig. 5(b), it can deviate from the guide wall portion 120 and shift in the width direction, which also causes a short circuit. In other words, with a configuration having only the guide wall portion 120, it is not possible to reliably regulate position shifts caused by rotation of the meter 10 in the depth direction.

[0024] 3, in this embodiment, the guide cover 100 is provided with a front guide 130 that is stretched between a pair of guide wall portions 120 and guides the front surface 10b of the measuring device 10. As a result, when the measuring device 10 is rotating, the front surface 10b of the measuring device 10 collides with the front guide 130, and the measuring device 10 cannot approach the terminal block 20. In other words, the rotation of the measuring device 10 in the depth direction relative to the terminal block 20 can be restricted. Therefore, the measuring device 10 can be accurately positioned, and it is possible to reliably prevent a short circuit between different phases caused by misalignment.

[0025] The height of the front guide 130 is preferably set at a position lower than the upper end of the guide wall portions 120. The terminal block 20 is usually attached to the wall of a building. Since the guide wall portions 120 are higher, the measuring device 10 can be inserted horizontally into the back between the pair of guide wall portions 120 from the front side of the terminal block 20, and then the measuring device 10 can be lowered and connected to the terminal block 20.

[0026] Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to the above-described embodiment. It is clear that a person skilled in the art can think of various modifications or alterations within the scope of the claims, and it is understood that these also naturally belong to the technical scope of the present invention. [Industrial Applicability]

[0027] INDUSTRIAL APPLICABILITY The present invention can be utilized as a guide cover of a bypass tool for an electricity meter, which guides a meter of the electricity meter when attaching or detaching it to or from a terminal block. [Explanation of symbols]

[0028] 10...meter, 10a...side, 10b...front, 20...terminal block, 22...terminal, 30...bypass tool, 32a, 32b...busbar, 50...guide cover, 100...guide cover, 110...mounting portion, 120...guide wall portion, 122...claw portion, 130...front guide

Claims

1. A guide cover for a bypass tool for an electric power meter that is attached to the bypass tool for an electric power meter for short-circuiting a terminal of a terminal block to which a meter of the electric power meter is attached and detached, A mounting portion that is mounted on the watthour meter bypass tool; A pair of guide walls extending upward from the bypass tool for the watt-hour meter and guiding a side surface of the meter; a front guide that is connected to the guide wall and guides a front surface of the measuring device; The front guide is disposed at a position higher than the terminal block when the bypass tool for an electricity meter to which the guide cover is attached is attached to the terminal block that is attached to a wall of a building, A guide cover for a bypass tool for an electricity meter, characterized in that when the meter is inserted into the terminal block, the front guide prevents the meter from being inserted in a rotated state in the depth direction relative to the terminal block.

2. 2. The guide cover for a bypass tool for an electricity meter according to claim 1, wherein the mounting portion has a claw portion that engages with a side surface of the bypass tool for an electricity meter.

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