JPS6246058Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a gas main valve opening/closing device.

Generally, the gas main valve is installed outdoors and supplies gas to indoor gas ranges, gas stoves, and other gas appliances through piping. It was a hassle to go outside and open and close the main valve lever. However, neglecting to open and close the main valve often causes gas to leak from gas appliances, resulting in gas poisoning, gas explosions, and the like.

In view of the troublesome operation of opening and closing an outdoor gas main valve, the present invention provides a device that allows the main valve lever to be opened and closed by operating a switch indoors.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In FIGS. 1 to 3, reference numeral 1 denotes a robust case 1, and inside this case 1 there are installed gas main valves A to which gas supply pipes C are connected on both sides,
The entire device including the main valve opening/closing lever B and a rotating mechanism for the lever B, which will be described later, is incorporated.

The case 1 can be divided into upper and lower parts, connected from the upper and lower sides via a supply pipe C, and fixed with screws and attached to the supply pipe C. Then, the main stopper A is housed inside the case 1, and the supply pipe C is extended outside the case 1.

A drive gear 4 is fixed to the upper end of a drive shaft 3 of a reversely rotatable geared motor 2 installed and fixed in a case 1, and this gear 4 meshes with a gear 5.

The gear 5 rotatably supported by the upper plate 1a of the case 1 has an upper and lower two-layer structure with different diameters, with the lower gear 5a having a large diameter and the upper gear 5b having a small diameter.

The gear 4 meshes with a lower gear 5a, and a lever rotation gear 6 meshes with the upper gear 5b. This gear 6 for rotating the lever is fan-shaped, and its base, which coincides with the center of rotation of the lever B, is rotatably supported on the upper plate 1a, and a clamping body 7 is protruded from the lower surface of the gear 6. There is. This clamping body 7 is provided on one side of the peripheral portion of the gear 6 along the circumferential surface of the gear so as to engage with a lever B for opening/closing a gas main valve A provided in the middle of the supply pipe C. .

The present invention has the above-mentioned configuration, and the state of use will be explained next.

In FIG. 2, it is perpendicular to the supply pipe C.
The position of the lever B indicated by the solid line is a state in which the main valve A is closed and the gas supply is stopped. When the geared motor 2 is driven to rotate by operating a switch indoors in this lever A position, the rotational torque increased approximately 10 times is transmitted to the rotating gear 6 via the drive gear 4 and the double-layer gear 5. , gear 6 is A
Forcibly rotate the lever B in the direction of the arrow to fully open the main valve A at the chain line position parallel to the supply pipe C, allowing gas to be supplied.

Next, when closing the main valve A, the geared motor 2 is rotated in the opposite direction to the above by operating the indoor switch, and the lever B is rotated to the solid line position by the rotation of the drive gear 4, the double-layer gear 5, and the rotation gear 6. Just let it happen.

The lever 6 is rotated using the geared motor 2 as a drive source, and stopped by turning off the indoor switch depending on the elapsed time.In order to ensure that the lever B is stopped in the open or closed position, a limit switch, It is also possible to install a photodetector or the like inside the case 1 to detect the lever B position and stop the geared motor 2.

According to the present invention described above, the outdoor main valve can be automatically opened and closed by operating the indoor switch.
Eliminates the hassle of opening and closing the main valve. Further, since the lever rotation is performed by a gear mechanism, the structure is simple and the rotation operation can be performed reliably.

In particular, in the present invention, as mentioned above, case 1
Since it can be separated, it can be easily installed to surround the existing gas main valve.

In addition, since the entire device is built into case 1, it is possible for example to manually operate lever B.
This prevents rotation.

Furthermore, since the gear 9 has a fan shape, the rotation angle can be minimized, which has the advantage of making the whole device smaller.

The device of the present invention can be electrically connected to conventional gas leak alarms, earthquake sensing devices, etc., and can automatically close the main valve when a gas leak, earthquake, etc. occurs while the main valve is open.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a front view, FIG. 2 is a plan view, and FIG. 3 is a side view. 1 is a case, 2 is a geared motor, 3 is a drive shaft, 4 is a drive gear, 5 is a two-layer structure gear, 6 is a rotating gear, and 7 is a clamping body.

Claims (1)

[Scope of utility model registration request] A drive gear 4 fixed to a drive shaft 3 of a geared motor 2 that can rotate in reverse and is installed in a robust case 1 that can be divided into upper and lower parts into which the entire device is incorporated.
and a two-layer structure gear 5 formed of a large-diameter lower gear 5a and a small-diameter upper gear 5b rotatably supported on the upper plate 1a of the case 1, and a fan-shaped base rotated to the upper plate 1a. It consists of a lever rotation gear 6 that is movably supported on a shaft, and a gear 4 and a lower gear 5.
a and upper gear 5b are engaged with gear 6, and a downward U-shaped clamping body 7 protruding from the lower surface of one side of the peripheral portion of gear 6 is connected to lever B for opening/closing gas main valve A surrounded in case 1. A gas main valve opening/closing device characterized in that the gas main valve is engaged with the main valve.