JPH0480663A - Watthour meter - Google Patents

Abstract

PURPOSE:To achieve the prevention of damages as caused by a dropping object from above along with a higher efficiency of inspecting work by arranging connection parts on front and rear surfaces of a terminal part connected to the outside while a front panel having a lower hinge part and an upper sealed part on an outer circumference of an outer box. CONSTITUTION:When carrying out a verification of performance by a weighing method, a probe of a verifying machine is put on a tiny screw 12a on the front side (the screw is screwed down on a h-shaped terminal metal 11 fixed inside a terminal block 13 mounted on a lower end of a case 15 of a watthour meter 1, where a through part 5c is formed longitudinally) in a direction of the arrow A to perform a performance test. There is no need for opening or closing a cover. When mounted on a wall surface 21, a watthour meter 1 is clamped at a lower part of a wall surface panel 3 by tightening a hinge part 4b at a lower end of a front panel 4 and then, it 1 is lifted to fix and seal a seal part 4a of the panel 4. When a wire 24a of the watthour meter 1 mounted is connected or removed, the watthour meter 1 is put upside down and a rear tiny screw 12a is brought to the front side thereby accomplishing the work easily askew from above on the front side as indicated by the arrow B.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a power meter that is attached to an outdoor wall.

(Prior Art) For example, in Fig. 5 showing a right side view of a conventional electricity meter used for measuring power consumption in a general household, and Fig. 6 showing a vertical cross-sectional view of its lower end, The electricity meter 23 attached to the outer surface of the facing wall 21 is attached to the front of the rectangular wooden board 22 fixed to the outer surface of the wall through wood screws (not shown) from the front of the wall 21 as indicated by the arrow A. The front cover of the terminal section 24 formed in the terminal section 24 is opened, and the electric wire 24a inserted from below the terminal section 24 is tightened to seal the terminal cover.

On the other hand, the first half of the outer box above the terminal section 24 is designed so that an internal measurement receiving section (not shown) can be seen through from the front.

The cover 23a is made of glass, and the latter half is a case 23b made of steel plate.

Furthermore, as shown in FIG. 6, a terminal block 13 molded with resin is provided at the inner lower end of the terminal portion 24 via a terminal block packing 14 which has a generally convex longitudinal section and whose upper end protrudes into the terminal cover 15. A plurality of terminal fittings 11 having an H-shaped longitudinal section are inserted into the terminal block 13.
The upper end of the terminal fitting 11 that protrudes upward from the terminal block gasket 14 is screwed with a machine screw to which the lower end of the lead wire 11b connected inside is fixed. A pair of machine screws 12a are screwed together.

Further, as shown in FIG. 5, the electric wire 24 is inserted from below into the rear of the machine screw Lea at the bottom of the terminal fitting 11, and is tightened and connected from the front with the machine screw 12a. In order to verify whether the equipment satisfies the performance stipulated by the Measurement Act, it is tested by the Japan Electric Meter Inspection Institute, and those that pass are affixed with a certification certificate and certification label, and are subject to electricity bill transactions. However, due to the large number of applications for this verification work, the time required for performance testing is required to be short.

(Problem to be Solved by the Invention) However, the basic structure of conventional electricity meters has hardly changed in Japan since the first product.

In other words, when performing verification work, remove the terminal case and
The measuring wire of the tester is inserted into the terminal fitting 11 from below the terminal part 24, and is tightened with the machine screw 12a.
After the measurement is completed, the machine screw 12a must be loosened again to remove the electric wire, so the verification work takes time.

On the other hand, in recent years houses have become less protruding due to the well-known rise in land prices. Therefore, in the conventional mounting structure of the electricity meter, which is installed protruding from the outside wall of the house, when snow or frozen ice falls on the roof in winter, it hits the glass cover 23a of the electricity meter. There is a risk of damage.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a power meter that is easy to verify and is not susceptible to being damaged by snow or ice falling from the roof.

[Structure of the invention]

(Means and effects for solving the 11 problems) The present invention has the following features:
In a watt-hour meter mounted on a wall facing outdoors, a front panel has a connecting part on the front and back sides of the terminal part connected to the outside, and a lower hinge part and an upper seal part on the outer periphery of the outer box. By providing a This is a power meter that can prevent damage.

(Example) Hereinafter, one example of the electricity meter of the present invention will be described with reference to the drawings. However, parts that overlap with those in FIGS. 5 and 6 are given the same reference numerals, and their explanation will be omitted.

FIG. 1 is a front view showing a state in which a power meter 1 according to the present invention is attached to the outside of a wall surface 21, and FIG. 2 is a sectional view taken along the line AA in FIG.

In FIGS. 1 and 2, a recess 2 with a concave cross section is provided on the outside of the wall surface 21, and a wall panel 3, which also has a concave cross section, is attached from the front to the inside of this recess 2 and the outer periphery of the front surface. .

The outer periphery of the front end of this wall panel 3 has a substantially frame-like shape when viewed from the front, and the upper end is provided with a sealing part 4a that is fixed and sealed to the wall panel 3, and the lower end is fixed to the front lower end of the wall panel 3. A front panel 4 is attached to which a hinge portion 4b is provided, and a power meter 1 having the same external shape as the conventional one is fixed in advance to the rear surface of the front panel 4.

On the other hand, in the lower part of the recess 2, an electric conduit 5b whose upper end protrudes from the lower part of the recess 2 and the wall panel 3 is buried in the rear part of the hinge part 4b, and an electric conduit 1124a inserted into the electric conduit 5b is buried.
After providing a slack portion, the upper end of the terminal portion is tightened with a machine screw of the terminal portion, which will be described later.

FIG. 3 is a detailed vertical cross-sectional view of the terminal portion 5 of the watt-hour meter 1 shown in FIGS. 1 and 2. FIG.

In the same figure, the terminal block 13 attached to the lower end of the case 15 of the electricity meter via the terminal block gasket 14 is formed with a penetrating portion 5c that penetrates in the front-rear direction.
A pair of machine screws 12a are screwed into the H-shaped terminal fitting 11 fixed inside the terminal block 13 on the rear side as well.

Now, when verifying the performance stipulated by the Measurement Act of the electricity meter configured as described above, it is necessary to contact the verification device from the front as indicated by arrow A to the machine screw 12a on the front side shown in Fig. 3. Performance tests can be performed by applying a probe to the power meter, and there is no need to open or close the cover, resulting in a power meter that can shorten the time required for verification work.

On the other hand, when installing the power meter 1 on the surface 21, as shown in FIG. 1 and fix and seal the sealing part 4a of the front panel 3.

When connecting or disconnecting the electric wire 24a of the installed watt-hour meter 1, turn the watt-hour meter 1 upside down as shown in FIG. By positioning it on the front side in FIG. 4, it can be easily performed from diagonally above the front side as indicated by arrow B.

In addition, in FIG. 2, by inserting a spacer between the rear surface of the front panel 3 and the mounting surface of the electricity meter, the wall surface 21
Since the amount of protrusion can be adjusted in accordance with the external shape of the electricity meter 1 and the amount of protrusion of the eaves of the building to which it is attached, the amount of protrusion can be adjusted arbitrarily, so that falling snow and ice can be adjusted. It also prevents damage to the glass cover caused by damage, and the wattmeter can be installed in a secure manner.

Furthermore, manufacturing is easy because the conventional parts can be used as they are by simply changing some of the conventional terminal blocks 13 and terminal fittings 11 and adding the wall panel 3 and front panel 4.

〔Effect of the invention〕

As described above, according to the present invention, in a power meter installed on the outside of a wall facing outdoors, a connecting part is provided on the front and rear surfaces of a terminal part connected to the outside, and a lower hinge part is provided on the outer periphery of the outer box. By providing a front panel with a seal at the top,
It can be installed in a recess in the wall where it is mounted, making it easy to connect the contactor of the tester to the terminal during testing, making testing easier and reducing damage caused by snow and ice falling from above. You can get the meter.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the watt-hour meter of the present invention, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, and FIG. 3 is a partially detailed longitudinal sectional view of the watt-hour meter of the present invention. FIG. 4 is a diagram showing the operation of the watt-hour meter of the present invention, FIG. 5 is a side view of a conventional watt-hour meter, and FIG. 6 is a partial longitudinal section of the conventional watt-hour meter. 1... Electric energy meter 3... Wall panel 4.
...Front panel 4a...Sealing section 4b...Hinge section 5...Terminal section

Claims (1)

[Claims] In a watt-hour meter mounted on a wall facing outdoors, a front panel has a connecting part on the front and back sides of the terminal part connected to the outside, and a lower hinge part and an upper seal part on the outer periphery of the outer box. A power meter characterized by being provided with.