JPH10132620A - Nameplate supporting mechanism for watt-hour meter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a nameplate supporting mechanism which can simplify the attaching work of the nameplate of a watt-hour meter and can make an automatic assembling device, such as the robot, etc., easily attach the nameplate. SOLUTION: The nameplate supporting mechanism is constituted so that the mechanism can attach a nameplate 3 having a measuring window 3a to the attaching member of the main body of a watt-hour meter on the front face of a measured value displaying element so that the displaying value of the measured value displaying element can be read through the window 3a. A tapped hole 1b and a nameplate locking tongue piece 1c which is cut and raised obliquely upward are respectively provided on the left and right sides of the attaching member and, on the nameplate, a nameplate attaching hole 3c which is faced to the position of the tapped hole 1b and a nameplate attaching and locking hole 3d which is faced to the position of the tongue piece 1c and through which the tongue piece 1c can be passed are provided. The nameplate 3 is attached to the attaching member by engaging the hole 3d with the tongue piece 1c and screwing a nameplate locking machine screw 4 in the tapped hole 1b through the nameplate attaching hole 3c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nameplate supporting mechanism for attaching a nameplate having a measuring window for reading a measured value to a mounting member of a watthour meter main body.

[0002]

2. Description of the Related Art FIGS. 7 and 8 are schematic views of an inductive watt-hour meter showing a conventional nameplate supporting mechanism. FIG. 7 is a side view and FIG. 8 is a front view. FIG. 9 is an exploded perspective view for explaining the mounting of the nameplate. In the figure, reference numeral 1 denotes a measuring device, which is a rotating disk 2 which rotates at a rotation speed proportional to the electric power used.
The number of rotations is counted by a numeral wheel (not shown) and displayed as electric energy. Reference numeral 3 denotes a nameplate indicating the rating of the watt-hour meter, the name of the manufacturer, and the like. The nameplate 3 has a weighing window 3a for reading a count value displayed by a numeral wheel (not shown) of the weighing machine 1, and a rotating disk 2
There is provided a viewing window 3b for watching the rotation of the device and a nameplate mounting hole 3c for mounting on the measuring instrument 1 at two places. The frame 1a of the measuring instrument 1 has two female screw holes 1b corresponding to the nameplate mounting holes 3c. The nameplate 3 is tightened and fixed to the female screw holes 1b using the nameplate mounting small screws 4. ing.

[0003]

In the nameplate supporting mechanism of the conventional watt-hour meter as described above, the measuring window 3a is connected to the numeral wheel.
Must be tightened to fix the nameplate 3 in a correct position. This tightening and fixing is performed by the frame 1 of the measuring instrument 1.
a, two female screw holes 1b are provided at two places on the left and right sides of the a.
At this time, special attention must be paid to the relationship between the numeral wheel and the measuring window 3a. That is, when tightening the nameplate mounting machine screw 4, when one nameplate mounting machine screw 4 is completely closed, the nameplate 3 rotates with the rotational force in the screw tightening direction,
The lineup of the other nameplate mounting hole 3c and the female screw hole 1b may be out of line, and the relationship between the numeral wheel and the measuring window 3a may be shifted.
Therefore, one nameplate mounting machine screw 4 is temporarily tightened, the other nameplate mounting machine screw 4 is closed, and then the temporarily tightened nameplate mounting machine screw 4 is closed in the actual manner. Was.

Further, it is necessary to insert the nameplate fixing machine screw 4 after completely matching the relationship between the numeral wheel and the measuring window 3a and the positions of the female screw hole 1b and the nameplate mounting hole 3c.
In the case of automatic assembly by a robot or the like, high precision is required for the alignment, which has been an obstacle to automation. Furthermore, the watt hour meter is used after regular inspection and maintenance by disassembly and reassembly after use for a prescribed period.
When disassembling and reassembling the weighing device, the nameplate 3 must have a detachable structure. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and simplifies the work of tightening and fixing the nameplate 3 and makes it easy to automatically assemble using a machine such as a robot. The purpose is to provide a mechanism.

[0005]

According to the present invention, a nameplate supporting mechanism for a watt hour meter according to the present invention has a nameplate having a measuring window attached to a mounting member of a watt hour meter main body in front of a numeral wheel to display a display value of the numeral wheel. In the nameplate support mechanism of the watt hour meter which is read through the measuring window, a female screw hole is formed on one side of the mounting member, and a nameplate locking tongue having a slope on the other side is formed by cutting and raising the nameplate. A nameplate mounting hole facing the female screw hole, and a nameplate mounting locking hole through which the nameplate locking tongue can be inserted facing the position of the nameplate locking tongue. The nameplate is attached to the mounting member by engaging with the nameplate locking tongue and tightening the nameplate mounting screw through the nameplate mounting hole and into the female screw hole.

Further, the tip of the nameplate locking tongue is formed in a pointed shape, and the nameplate mounting locking hole is trapezoidal.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 and 2 show a first embodiment of the present invention.
1 shows a nameplate support mechanism of the induction type watt-hour meter. In the figure, reference numeral 1a denotes a frame of the measuring instrument 1, 1b denotes a female screw hole, 3 denotes a nameplate, and 3a denotes a measuring window for making it easy to see the numeral wheel from below, which is generally called an inclined type. 3b is a viewing window for watching the rotation of the rotating disk, 3c is a nameplate mounting hole, and 4 is a nameplate mounting machine screw. These are the same as those shown in the above-mentioned prior art, but for convenience of explanation, the numeral wheel and gears of the scale are not shown. Reference numeral 3d denotes a square nameplate attachment locking hole, which is provided on the right side of the nameplate attachment hole 3c. Reference numeral 1c denotes a nameplate locking tongue formed on the frame 1a of the weighing device, and has a dimension that can be inserted into the nameplate mounting locking hole 3d. As shown in FIG. It has been cut and raised.

[0008] The work of mounting the nameplate in the nameplate support mechanism of the watt hour meter having the above configuration is performed by inserting the nameplate locking tongue piece 1c and the nameplate mounting lock from obliquely above the measuring instrument 1 assembled to the watthour meter main body. The hole 3d is engaged, the nameplate mounting small screw 4 is inserted into the nameplate mounting hole 3c, and the female screw hole 1b is tightened. At this time, the nameplate 3 tends to rotate with the rotational force in the screw tightening direction due to the tightening of the nameplate mounting screw 4. However, this rotation is prevented by the upper side of the nameplate attachment locking hole 3d abutting the nameplate locking tongue 1c. As a result, the nameplate 3 is positioned and its lifting is prevented, so that the nameplate mounting machine screw 4 can be tightened at a stretch, thereby improving workability. When the watt-hour meter is subjected to some vibration or impact and the nameplate mounting small screw 4 is loosened in the use state of the watthour meter, the center of gravity of the nameplate 3 is positioned more than the nameplate mounting hole 3c. Since the nameplate 3 is present on the side of 3d, the nameplate 3 is supported by the nameplate locking tongue piece 1c, and the nameplate 3 is prevented from tilting.

In the above description, the nameplate locking tongue 1c is cut and raised so that the bending line is horizontal, but as shown in FIGS. 3 and 4, the bending line is vertical. It may be cut and raised as follows. 3 and 4 are enlarged views of only the nameplate locking tongue 1c, FIG. 3 is a cutout of the nameplate locking tongue 1c, and FIG. It was formed by: In each case, the nameplate locking tongue piece 1c is cut or raised so that the bending line 1f extends in the vertical direction, and is formed with an oblique side 1e facing obliquely upward. Even with such a nameplate locking tongue 1c, the nameplate locking tongue 1c shown in FIGS.
The same operation and effect as described above can be obtained.

Embodiment 2 In the first embodiment, the size relationship between the nameplate locking tongue piece 1c and the nameplate mounting locking hole 3d is not particularly set. However, when the mounting of the nameplate 3 is automatically performed by a robot or the like, this operation is performed. As in the second embodiment, an appropriate relationship between the size and the shape may be required. That is, in FIGS. 5 and 6, 1a is a frame of the measuring device 1, 1b is a female screw hole, 3 is a nameplate, 3a is an inclined measuring window, 3b is a viewing window for watching the rotation of the rotating disk, and 3c is a viewing window. Nameplate mounting holes 4 are nameplate mounting screws. These are the same as those described in the first embodiment. For convenience of explanation, the numeral wheel and gears of the scale are not shown.

Reference numeral 3e denotes a nameplate attachment locking hole, which is formed in a trapezoidal shape on the right side of the nameplate attachment hole 3c. In addition, this trapezoid has a width dimension of the upper side set to a name plate locking tongue piece 1 described later.
Although the width dimension of the lower side is increased to match the width dimension of c, the trapezoid may not be an exact trapezoid, but may be, for example, a rounded trapezoid. Reference numeral 1c denotes a nameplate locking tongue formed on the frame 1a of the measuring instrument, which is cut and raised in a shape similar to the trapezoid of the nameplate mounting locking hole 3e. In this case, the relationship between the size of the nameplate locking tongue 1c and the size of the nameplate mounting locking hole 3e is as follows.
For example, the nameplate attachment locking hole 3e of the nameplate 3 is set to easily fit into the nameplate locking tongue 1c in accordance with the operation accuracy of an automatic assembly device such as a robot. When fitting the nameplate mounting locking hole 3e to the nameplate locking tongue 1c, fit it in a position that is easy to fit.
After the fitting, the nameplate 3 is mounted in a correct position by engaging the nameplate locking tongue 1c with the upper side of the nameplate mounting locking hole 3e. For this reason, even if the operation accuracy of an automatic assembling apparatus such as a robot is low, it can be accurately mounted without causing any trouble. This makes it easy to introduce an automatic assembling apparatus such as a robot, and can improve the operation rate.

In the above description of the embodiment, the nameplate 3 is mounted on the measuring device in the induction type watt-hour meter. However, even when the mounting type is mounted on the mounting member of the wattmeter main body other than the measuring device. A similar nameplate support mechanism can be applied. Further, the same nameplate support mechanism can be applied to an electronic wattmeter in which a nameplate having a measurement window is mounted on the front surface of a measurement value display element.

[0013]

Since the nameplate supporting mechanism of the present invention is constructed as described above, the following effects can be obtained.

Even if the nameplate is rotated by the torque in the screw tightening direction due to the tightening of the nameplate mounting screw, the nameplate locking tongue prevents the nameplate from rotating at the correct position, so that the correct position can be obtained without any special attention. The nameplate is attached.

Further, the tip of the nameplate locking tongue is formed in a pointed shape, and the shape and size of the nameplate attachment locking hole are adjusted to a predetermined size corresponding to the pointed shape of the tip of the nameplate locking tongue. By adopting a trapezoid having a similar shape, even if the operation accuracy of the automatic assembling apparatus such as a robot is loose, the automatic assembling apparatus can be accurately mounted without causing any trouble, thereby facilitating the introduction of the automatic assembling apparatus such as a robot.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a nameplate supporting mechanism of a watt hour meter according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing the relationship between the nameplate and the nameplate locking tongue of FIG.

FIG. 3 is a perspective view showing another embodiment of a nameplate locking tongue.

FIG. 4 is a perspective view showing another embodiment of the nameplate locking tongue.

FIG. 5 is an exploded perspective view showing Embodiment 2 of the present invention.

FIG. 6 is a perspective view for explaining Embodiment 2;

FIG. 7 is a schematic side view of a conventional watt hour meter.

FIG. 8 is a schematic front view of a conventional watt hour meter.

FIG. 9 is an exploded perspective view of a nameplate support mechanism of a conventional watt hour meter.

[Explanation of symbols]

1 measuring instrument, 1a frame, 1b female screw hole, 1c
Nameplate locking tongue, 1e hypotenuse, 2 rotating disc, 3 nameplate,
3a Measuring window, 3c nameplate mounting hole, 3d, 3e nameplate mounting locking hole, 4 nameplate mounting screw.

Claims (2)

[Claims] 1. A nameplate having a measuring window is mounted on a mounting member of a watt hour meter body in front of a numerical value indicating wheel, and the displayed value of the numerical value indicating wheel is read through the measuring window. In the nameplate supporting mechanism of the watt hour meter, a female screw hole is formed on one side of the mounting member, and a nameplate locking tongue having a slope on the other side is formed by cutting and raising, and the position of the female screw hole is provided on the nameplate. A nameplate mounting hole is formed opposite to the nameplate mounting tongue, and a nameplate mounting locking hole is formed facing the position of the nameplate locking tongue so that the nameplate locking tongue can be inserted. A nameplate support mechanism for a watt hour meter, wherein the nameplate is mounted on the mounting member by engaging the nameplate mounting screw and tightening the nameplate mounting screw through the nameplate mounting hole into the female screw hole. 2. The nameplate supporting mechanism for an electric energy meter according to claim 1, wherein the tip of the nameplate locking tongue is formed in a pointed shape, and the nameplate mounting locking hole is trapezoidal.