JPH0420707A - Safety device for gas equipment - Google Patents

Abstract

PURPOSE:To provide a safety device for gas equipment for which the gas vessel can be installed only when the shaft to operate a valve on the side of the gas equipment is in the position in which the valve is closed by providing a stopper which is supported on a bearing so as to be able to move between the open position of a valve which projects at the rear end of a suppression member to stop its movement and the valve position which lets the member pass said rear end. CONSTITUTION:When a vessel B is set, it is confirmed that the knob 13 of the equipment plug is in the position of 'close'. Since at this time a stopper 25 is in the valve closing position away from the shaft on which a suppression member 15 moves, the flange of a receiving hole 8 pushes the suppression member 15 when the posture of a gas vessel B is matched and made to approach the receiving hole 8, and the vessel B goes back without the obstruction from the stopper 25. As the vessel B goes back, it rotates round its shaft by a guide means 20 and the projection 16 goes round the outside of a yoke so that the vessel flange (f) is attracted to the yoke 6 by magnetic force without the obstruction from the suppression member 15 and its installation to a governor 5 is completed. Then the knob 13 is rotated and the gas flows to an actuation section 3 from the valve 11 that is open, and the gas is ignited and the gas equipment is in the state of operation. As a result it is possible to raise safety very much.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a safety device for a gas appliance using a removable gas container.

(Prior art) This type of gas appliance has a structure in which the gas container is fixed in the state where the nozzle at the tip of the container is inserted into the socket of the governor and the valve is opened. There are structures such as a structure in which the container is pressed in a direction, and a structure in which the annular portion at the tip of the container is held by magnetic force or the like.

In such gas appliances, if a gas container is attached without the user knowing that the appliance valve knob has been operated to open the valve, gas leakage will occur. There are also known gas appliances that have a structure in which the gas container is removed by activation of a safety mechanism while the gas appliance is in use; however, when the container is removed, it is under abnormal pressure or temperature, and Since the stopper is also in an open state, there would be an additional safety problem if the gas container could be attached again.

(Technical Problem) The purpose of the present invention is to solve the above-mentioned problem. When the shaft that operates the valve on the gas appliance side is in the valve open position, a gas container cannot be attached, and when it is in the valve closed position, the gas container cannot be attached. To provide a safety device for gas appliances which allows a gas container to be attached only to the user.

(Technical means) The object is to have a gas passage leading to a gas outlet that regulates the pressure of a gas flow introduced from a socket to which a removable gas container is attached and discharges it to an operating part, and a valve that opens and closes the passage. a governor integrally incorporated with a shaft for operating the gas container; a restraining member having a protrusion at its tip and biased by a spring so as to be movable and rotatable in a container mounting direction in order to interpose the protrusion between the contact parts; and a governor on which the restraining member and the restraining member are pivotally supported. a guide means that is provided between the side and guides the movement of the restraining member so that the axial movement of the restraining member causes the protruding part to rotate in a direction in which the protruding part escapes from between the contact parts, and a shaft that operates the valve. A stopper that is pivotally supported so as to be movable between a valve open position that protrudes from the rear end of the restraining member and stops the movement of the restraining member by rotation, and a valve closed position that allows the rear end to pass through. achieved.

(Example) The present invention will be explained below with reference to the drawings.

The gas appliance shown in FIG. 1 is a so-called cassette stove, and has a housing part 2 for a gas container B on one side of a main body 1, and a burner 3 as an operating part on the other side. The gas container B is connected to a governor 5 disposed at the front of the accommodating portion by a fixing means 4 to which a tip nozzle portion n is removably attached. Exemplary fixing means 4
is equipped with a yoke 6 and a magnet 7 forming a magnetic circuit that magnetically attracts an annular flange f at the tip of the gas container.

Reference numeral 8 denotes a socket into which the container nozzle part n is inserted, and the governor 5 has a gas passage 9 including a configuration for regulating the pressure of gas and allowing it to flow out from the socket 8 to the operating part 3, and near the outlet 10 thereof. A valve 11 is provided, and an operating shaft 1 integrated with the valve 11
2 is rotated around its axis from the outside by means of an instrument plug knob 13 to open and close the passage 9.

Since the operating shaft 12 is rotated by operating the device stopper knob 13, a stopper 25 is provided on the operating shaft 12 so that the operating shaft 12 can be rotated between the valve open position and the valve closed position.
configured to control the operation of.

The restraining member 15 has a protruding portion 16 at the tip that can be interposed between the contact portion between the fixing means 4 and the container flange f, and a rear end portion 17 that can come into contact with the stopper 25, and extends in the container mounting direction. The yoke 6 is a shaft-like member that is fixed to a bearing 18 provided on the governor side so that the shaft 15a can move in the axial direction so as to substantially contact the edge of the yoke 6. This protruding portion 16 is provided so as to protrude laterally between the contact portion between the flange f and the yoke 6 as the restraining member 15 rotates around the axis. It is pivotally fixed to the bearing portion 18 via a guide means 20 so as to rotate in the circumferential direction as well. The guide means 20 consists of a guide long groove 19 provided in the axial direction of the restraining member 15 and a guide pin 21 protruding into the hole of the bearing part 18 so as to engage with the long groove 19. A front straight portion 19a that moves straight while being pushed by the flange f, an inclined portion 19b that rotates to avoid the yoke 6 or escape from between the flange and the yoke contact portion, and a terminal end that maintains the avoidance state. It has a portion 19c. The restraining member 15 is always urged in the projecting direction by the pushing spring 22. 2
3 indicates a stop for the restraining member 15 from being pulled out.

The aforementioned stopper 25 allows the restraining member 15 to retreat only when the instrument stopper knob 13 and hence the valve 11 is in the closed position, and is in the way of the restraining member 15 when the valve 11 is in the open position. It is pivoted to and is biased by a spring 26 in a direction that interferes with the restraining member 15. Reference numeral 27 indicates a plate-like engagement portion at the tip of the operating shaft 12, 28 indicates an engagement hole of the stopper 25 that engages with the engagement portion 27, and 29 indicates a stop piece of the stopper 25 itself, which also serves as a spring receiver and positions the stopper 25. Because of this, it hits the governor side. Note that 31 is a stopper guide surface provided on the governor side, and 32 is a positioning portion protruding from the upper end of the yoke toward the container side, which engages with a notch in the flange f.
This is for setting container B in a predetermined position. m
indicates the mounting cup of container B.

(Function) In the above configuration, when setting the container B, make sure that the device stopper knob 13 is in the "closed" position. At this time, the stopper 25 is in the valve closed position away from the movement axis of the restraining member 15, so when the gas container B is aligned and brought close to the socket 8, the restraining member 15 is pushed by its flange f, and the stopper Retreat without being disturbed by 25. During this time, the protrusion 16 rotates about the axis by the guide means 20 while retreating, and the protrusion 16 bypasses the outside of the yoke.
magnetically adsorbs to the governor 5, and installation to the governor 5 is completed.

At this time, the built-in valve is also opened, and the discharged gas reaches the valve 11 of the governor 5. Then, when the knob 13 is rotated, gas flows from the opened valve 11 to the operating section 3, ignites, and the gas appliance enters the operating state. A safety mechanism works during operation,
When the gas container B is automatically removed from the socket 8, the gas supply is cut off and combustion and other operations are also stopped. At this time, the restraining member 15 is pushed out by the pushing spring 22 at the same time as the container is separated, and since the valve 11 remains open unless the instrument stopper knob 13 is returned, the stopper 25 is returned to the open position by the spring 26, and the restraining member Located immediately after 15.

Therefore, since the restraining member 15 cannot retreat,
Even if an attempt is made to attach the gas container B, the protruding portion 16 will get in the way and the attachment will not be possible. Even if an attempt is made to magnetically attract the flange f to the yoke 6 while avoiding the protrusion 16, the flange f will hit the restraining member shaft 15a or the protrusion 1
6 hits the mounting cup m, the valve nozzle n cannot be inserted into the socket 8, and erroneous installation does not occur.

(Effect) Therefore, according to the present invention, a gas container cannot be attached as long as the shaft for opening and closing the valve on the gas appliance side is in the valve open position, and only when the operating shaft is returned to the valve closing position. Since the stopper allows passage of the restraining member and allows the gas container to be attached while pushing the member, there is no possibility of failure such as spouting raw gas at the same time as the container is attached, and the safety mechanism is not activated. Since it is possible to eliminate the risk of the gas container being installed again in a state where safety has not been confirmed and the appliance stopper knob is not returned to the closed position, safety can be significantly increased.

[Brief explanation of the drawing]

The drawings show an embodiment of the safety device according to the present invention.
The figure is an explanatory plan view of the state in which it is assembled into a gas appliance, the second figure is an enlarged plan view, the third figure is a front explanatory view as seen from the container side, and the fourth figure is an explanatory plan view of the gas appliance.
The figure is a cross-sectional side view of the main part. B...Gas container, 5...Governor, 8...Socket,
9...Gas passage, 10...Gas outlet, 11...Valve, 12...Operation shaft, 13...Instrument stopper knob, 15...
- Suppressing member, 16... Protruding part, 18... Bearing part, 20... Guide means, 22... Extrusion spring, 25... Stopper. Patent applicant Sun Frontier Technology Co., Ltd.

Claims (2)

[Claims] (1) It has a gas passage leading to a gas outlet that regulates the pressure of the gas flow introduced from the socket to which the removable gas container is attached and discharges it to the operating part, and has an integrated shaft that operates the valve that opens and closes the passage. The gas container has a protrusion at its tip that is pivotally supported by the governor near the governor incorporated in the gas container and the fixing means for fixing the gas container to the receptacle, and interposed between the contact portion between the fixing means and the fixing part of the gas container. and a restraining member that is spring-biased so as to be movable and rotatable in the container mounting direction in order to interpose the protruding part between the contact parts, and a restraining member provided between the restraining member and the governor side on which the restraining member is pivotally supported. a guiding means for guiding the movement of the restraining member so that the protruding portion rotates in a direction in which the protruding portion escapes from between the contact portions due to the axial movement of the restraining member; A safety device for a gas container, comprising a stopper pivotally supported so as to be movable between a valve open position that protrudes from a rear end and stops movement of the member, and a valve closed position that allows the rear end to pass. (2) The guide means consists of a long guide groove formed in the axial direction of the side surface of the restraining member, and a guide pin that engages with the long groove. The safety device for a gas container according to claim 1, further comprising an inclined portion for rotating the member.