JPS583198Y2 - Counter with transmission mechanism - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a counter equipped with a transmitting mechanism that is applied to flowmeters such as gas meters and water meters.

Recently, in flowmeters for gas or water, etc., a transmitter is built into the counter mechanism installed in the meter body.
Remote measuring meters that provide instructions to an indicating mechanism installed at a remote location are becoming popular.

This has a built-in magnet in the number wheel that makes up the counter mechanism.
A reed switch provided close to the number wheel is turned on and off by the magnetic force of the magnet, and a current is momentarily passed through the indicating mechanism to operate the indicating mechanism.

However, in the past, this type of transmission mechanism required a reed switch to be installed close to the number wheel, partly because the magnetic force of the magnet built into the number wheel was weak, and the transmission mechanism was housed inside the counter case. .

Therefore, in the event of maintenance or inspection of the transmitting mechanism or failure, the counter case must be removed and the counter must be disassembled.

Furthermore, incorporating the transmission mechanism in the counter case increases the size and complexity of the counter case, making assembly work troublesome and increasing costs.

This idea was developed based on the above circumstances, and its purpose is to attach the transmitting mechanism to the counter case in a removable manner so that the transmitting mechanism can be easily maintained, inspected, or repaired. This invention is intended to provide a counter equipped with a transmitting mechanism that can facilitate assembly work. This invention will be described below based on an embodiment shown in the drawings.

In the figure, reference numeral 1 denotes a counter case provided on the side wall of the gas meter main body, which is composed of a mounting base 2 and a cover 4 attached to this opening via a gasket 3.

A number wheel 6 rotatably supported by the main shaft 5 is installed inside the counter case 1, and the number wheel 6 located on the rightmost side is connected to the gas meter main body via a transmission gear group 7. The rotary drive unit (not shown) is interlocked with the rotary drive unit (not shown).

Then, measure the gas flow rate inside the gas meter body using the number wheel 6.
Even if the totalization is instructed to..., the numerical values instructed to these number wheels 6... can be read directly through the transparent glass plate 8 provided on the cover 4. .

Further, the number wheel 6 located at the rightmost end is integrally molded from a synthetic resin material, and an annular recess 9 is provided on the negative side thereof.

In the concave portion 9 of , there is a straight line passing through the center of
An annular magnet 10 that is divided into S and N poles is housed, and is designed to rotate together with the number wheel 6.

Further, a mounting plate 11 bent in a U-shape is removably fitted to the front side of the counter case 1, and the upper and lower bent pieces 11a and 11b are attached to the upper and lower surfaces of the counter case 1. It is in pressure contact with the

Further, a nut 12 is welded to the lower contact piece 11b, and a tightening screw 13 for fixing the mounting plate 11 to the counter case 1 is screwed into this nut 12.

A transmitting mechanism 1, which will be described later, is provided on the front side of this mounting plate 11.
4 is installed.

That is, 15 is a switch case that houses the transmission mechanism 14, and the opening edge has mounting pieces 16, 16 projecting on both sides.
is installed protrudingly.

The mounting pieces 16, 16 are attached to the front surface of the mounting plate 11 by mounting screws 17, 17.

Furthermore, a support plate 18 is provided in the opening in the switch case 15, that is, in a portion adjacent to the mounting plate 11, and a magnetically responsive body, such as a reed switch 19, is attached to one side of the support plate 18 in the vertical direction. There is.

This reed switch 19 faces the number wheel 6 having the magnet 10 inside the counter case 1.

The reed switch 190 has both terminals 20° 20 connected to a cabtyre cord 22 via a lead wire 2L21, and the other end of this cabtyre cord 22 is electrically connected to an indicating mechanism (not shown) installed at a remote location. It is connected to the.

Further, a biasing magnet 23 is attached to the support plate 18 facing the contact portion 19a of the reed switch 19.

Therefore, the relationship between the magnet 10 embedded in the number wheel 6, the reed switch 19, and the biasing magnet 23 is as shown in FIG. 4, and the contact portion 19a of the reed switch 19 is held open. , as the number wheel 6 rotates as shown by the two-dot chain line, the boundary point a between the S pole and the N pole of the magnet 10,
When the point a faces the reed switch 19, the contact portion 19a is in a closed state.

Therefore, the number wheel 6 is turned on twice in one rotation.

In addition, when performing maintenance inspection or repair of the transmitting mechanism 14, loosen the tightening screw 13 and remove the switch case 1.
By pulling 5 forward, it can be separated from the counter case 1 together with the mounting plate 11.

Therefore, there is no need to remove the counter case 1,
Maintenance, inspection, repair, and replacement can be easily performed.

As explained above, this idea has a magnet embedded inside the number wheel built into the counter case, and is turned on by the magnetic force of the magnet outside the counter case.

Since the transmitting mechanism having a magnetically responsive body that turns off is detachably provided, the transmitting mechanism is structurally simpler and easier to assemble, and can be provided at a lower price than when the transmitting mechanism is built into the counter case.

Moreover, the counter part and the oscillation mechanism, which are integrated into the meter body, are manufactured in separate processes, and the transmitter mechanism can be attached after the meter body is installed, which improves installation workability and makes maintenance, inspection, and repair easier. This has the effect of being extremely convenient when

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, and Fig. 1 is a front view, Fig. 2 is a cross-sectional plan view, Fig. 3 is a vertical cross-sectional side view, and Fig. 4 is a schematic explanatory diagram for explaining the operation. It is. 1...Counter case, 6...Number wheel, 10...
Magnet, 14... Transmission mechanism, 19... Magnetic response body (reed switch).

Claims (1)

[Scope of utility model registration request] A magnet is embedded inside the number wheel built into the counter case,
A counter equipped with a transmitting mechanism, characterized in that a transmitting mechanism having a magnetic responsive body that is turned on and off by the magnetic force of the magnet is removably provided on the outside of the counter case facing the number wheel.