JPS6313568Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fast-forwarding device for number wheels that displays the usage of electricity, gas, water, etc., and particularly to a fast-forwarding device for number wheels that has a function to prevent misreading.

FIG. 1 shows a conventional number wheel fast-forwarding device. In FIG. 1, a gear 1 is connected to a rotating disk shaft (not shown) of a power meter. The number wheel 2 at the lowest digit indicates the amount of power used in the first decimal place, and is rotatably attached to a rotating shaft 8, and has a gear 4 on one side that meshes with the gear 1. There is. Further, on the other side of the gear 4 of the number wheel 2, an engagement pin 5 protrudes near the outer periphery.
An engaging body 6 is also rotatably attached to the rotating shaft 3, and a recess 7 is formed on the outer peripheral surface of the engaging body 6.
is formed.

A weight 8 is attached to the side of the engaging body 6 opposite to the number wheel 2 of the lowest digit, and this weight 8 is arranged so as to be able to engage with the engaging pin 5. There is. When the engagement pin 5 is not engaged with the weight 8, the weight 8 causes the engagement body 6 to move to a position where the weight 8 is lowered to the lowest position, that is, directly below the rotating shaft 8. It will stand still.

A number wheel 9 for the lower second digit is rotatably attached to the rotating shaft 3, and this number wheel 9 is adapted to display the amount of power used for the first digit.
A gear 10 is attached to one side of this number wheel 9,
This gear 10 meshes with a feed wheel 12 rotatably attached to a rotating shaft 11. This feeder car 12
can engage with the recess 7 of the engaging body 6.

Next, the operation of this conventional number wheel fast forwarding device will be explained with reference to FIGS. 2 to 5.

When a power metering rotating disk (not shown) rotates in proportion to the power used, this rotation is transmitted to gear 4 via gear 1 . Therefore, the number wheel 2 of the lowest digit rotates in the direction of the arrow in the figure. The engagement pin 5 rotates in the direction of the arrow as the number wheel 2 rotates, and as shown in FIG. The pin 5 engages with the weight 8. Next, as shown in Figure 3,
When the engagement pin 5 engages with the weight 8 and pushes up the weight 8, the engagement body 6 rotates in the direction of the arrow in the figure synchronously with the number wheel 2 of the lowest digit. As shown in FIG. 4, the engaging body 6 rotates together with the number wheel 2 until the weight 8 reaches directly above the rotating shaft 3, but once the weight 8 passes directly above the rotating shaft 3, As shown in FIG. 5, the weight of the weight 8 causes the engaging body 6 to rapidly rotate until the weight 8 comes directly under the rotating shaft 3.
That is, the engaging body 6 rapidly rotates by half a rotation. In this way, while the engaging body 6 instantaneously makes a half rotation, the recessed portion 7 of the engaging body 6 always touches the feed wheel 1 only once.
Since it is configured to engage with the feed wheel 1
2 is rotated by a predetermined angle, and the number wheel 9 is rapidly rotated by one number via the meshing gear 10.
The number wheels 2 and 9 each have numbers 0 to 9 printed on their outer peripheral surfaces, and when the number 0 on the number wheel 2 is located in the center of the measuring window (not shown), the engaging body 6 The positions of the engagement pin 5 and the weight 8 are selected so that the attached weight 8 is located directly above the rotating shaft 3.

However, in such a conventional number wheel fast-forwarding device, when the weight 8 is located directly above the rotating shaft 9, the engaging body 6 is in an unstable state. Therefore, due to factors such as vibration or impact force being applied from the outside, the mounting angle of the watt-hour meter, or the mounting position of the weight 8, the number 0 on the number wheel 2 of the lowest digit may be (not shown), the weight 8 falls and the engaging body 6 rapidly rotates half a turn, causing the number wheel 9 of the last two digits to rotate by one digit. As a result, the number wheel 2 of the lowest digit
The number 9 is displayed, and the number wheel 9 in the lower second digit is displayed.
will be displayed incremented by one digit. Therefore, the integrated measurement value is 1KWh lower than the true value.
You will read a lot.

In addition, when the digit 0 of the lowest digit number wheel 2 is located in the center of the measurement window (not shown) due to factors such as the installation angle of the watt-hour meter or the installation position of the weight 8, or friction, etc. A state occurs in which the weight 8 does not fall even if it passes over the center of the window, and the engaging body 6 does not rotate the number wheel 9 of the lower two digits. As a result, the number 0 or 1 is displayed on the number wheel 2 of the lowest digit, and
The digit wheel 9 is displayed without being carried up by one digit. Therefore, the integrated metric value will read 1KWh less than the true value.

Therefore, for example, if the multiplication factor of the metering device is 1×1000, the metered value equivalent to 1000 KWh will be misread, which is not desirable as a calculation device that is the basis of fair electricity rate transactions.

The present invention has been made for the purpose of providing a fast-forwarding device for number wheels that eliminates the drawbacks of the conventional devices described above and prevents misreading of measured values by simple modification of the conventional device. The number wheel of the lowest digit is equipped with a second engagement pin that can engage with the engagement body, and the number 9 displayed when the weight of the engagement body is at the highest position and the weight of this engagement body The number 0, which is displayed when the engaging body rapidly rotates due to its own weight and comes into contact with the second engaging pin, is written on the outer peripheral surface of the engaging body.

The present invention will be explained below with reference to embodiments shown in the drawings. Note that the same components as those of the conventional device described above are denoted by the same reference numerals in the drawings, and the explanation thereof will be omitted.

FIG. 6 shows an embodiment of a fast-forwarding device for a number wheel according to this invention.The structure differs from the conventional device shown in FIG. 1 in that numbers 9 and 0 are printed on the outer peripheral surface of the engaging body 6. The only difference is that a second engagement pin 13 is provided protruding from the number wheel 2 of the lowest digit at a position diametrically apart from the engagement pin 5, and the other configurations are exactly the same as the conventional device. The display positions of the numbers 9 and 0 will be described later. Furthermore, since the operations are almost the same, a description of the same operations will be omitted. Therefore, since the operation up to the dropping of the weight 8 is the same as that of the conventional device, it will be omitted, and the dropping operation of the weight 8 will be explained.

When the weight 8 passes directly above the rotating shaft 3, the engaging body 6 rotates rapidly as in the conventional device, and the feed wheel 12
The number wheel 9 of the lower second digit is rapidly rotated via the numeral wheel 9, and the weight 8 engages with the second engagement pin 13, as shown in FIG. Thereafter, the weight 8 rotates together with the engagement pin 13 until it is positioned directly below the rotating shaft 3, as shown in FIG. That is, the engaging body 6 rotates together with the number wheel 2 of the lowest digit.

Now, before the digit 0 of the lowest digit number wheel 2 is located in the center of the weighing window (not shown), the weight 8 falls and the engaging body 6 rotates rapidly, and the second lowest digit Assuming that the number wheel 9 is rotated by one digit, the number 0 written on the engaging body 6 will appear in the measuring window (not shown) and the number wheel 9 for the second lower digit will appear, as shown in FIG. 1
Indicates that the number has been rotated by the number and prevents misreading.
The exact measured value in Figure 9 is 4.9KWh,
Even if it were to read 5.09KWh by mistake, the error would be less than 1/5 of the reading error of conventional equipment. Also, since the number 0 written on the engaging body 6 rotates together with the number wheel 2 of the lowest digit, it disappears from the measurement window along with the number 9 of the number wheel 2 of the lowest digit, and the number 0 of the engaging body 6 This prevents misreading due to continued display.

Next, if the weight 8 does not fall even if the number 0 on the number wheel 2 of the lowest digit passes over the center of the weighing window, as shown in Figures 10 and 11, It shows that the number wheel 9 has not rotated one digit yet to prevent misreading.

The exact measured values in Figures 10 and 11 are 5.0KWh and 5.1KWh, respectively.
Even in the unlikely event that 4.90KWh and 4.91KWh are read by mistake, the reading error is less than 1/5 of that of conventional equipment.

In the above-mentioned embodiment, the engagement pins 5 and 13 are engaged with the weight 8, but a protrusion is provided on the engagement body 6 in addition to the weight 8, and this protrusion and the engagement pin are engaged with each other. If 5 and 13 are engaged, the same effect can be achieved, and the shape of the weight 8 can be made freely, for example, thin.

In the above embodiment, the case of a power meter is shown, but the present invention can be applied to various devices using numeric wheels, such as a gas meter, a water meter, and an integrated hour meter.

As explained above, in the fast-forwarding device for the number wheel according to the present invention, the numbers 0 and 9 are attached to the engaging body, and the second engagement pin is provided protruding from the number wheel of the lowest digit. Values can be read accurately, and even if there is a misreading, the error is much smaller than with conventional methods, which is an excellent effect.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a conventional fast-forwarding device for number wheels, FIGS. 2 to 5 are explanatory diagrams of the device shown in FIG. 1, and FIG. 6 is an implementation row of the fast-forwarding device for number wheels according to the present invention. FIG. 7 and FIG. 8 are operation explanatory diagrams of the device shown in FIG. 6, and FIGS. 9 to 11 are
The figure is an explanatory diagram showing the relationship between the number display position of the number wheel of the lowest digit and the number display position of the engaging body. 2...Number wheel for the lowest digit, 3...Rotation axis, 5,
13... Engaging pin, 6... Engaging body, 7... Recessed portion,
8... Weight, 9... Lower second digit number wheel, 12...
...Feeding car.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The number wheel of the lowest digit rotates in accordance with the measured quantity, and the number wheel rotates as a result of the engagement of the engagement pin protruding from this number wheel, and the weight and outer periphery. An engaging body having a recess formed in a surface, a gear that engages with the recess and rotates when the engaging body rapidly rotates due to the weight of the weight, and is rotated by one number due to the rotation of this gear. , in a fast-forwarding device for a number wheel having a number wheel for the second lower digit located on the side of the engaging body, the number wheel for the lowest digit is displayed when the weight is positioned at the highest position on the engaging body; and the number 0, which is displayed when the engaging body rapidly rotates due to the dead weight of the engaging body and comes into contact with the second engaging pin, are written on the outer peripheral surface of the engaging body. A fast-forwarding device for numerical cars characterized by: (2) The fast-forwarding device for a number wheel according to claim 1, wherein the pair of engagement pins can engage with the weight. (3) The fast-forwarding device for a number wheel according to claim 1, wherein the pair of engaging pins can engage with protrusions provided on the engaging body.