JPS6139159Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention relates to a plug that is attached to a supply pipe for combustion gas, etc. Specifically, when the hose fitted to the discharge part of this plug is detached, the stopper of the plug is automatically closed. This invention relates to a safety device for a cockpit that disables the opening operation of the plug when the hose is activated and the hose is detached.

Conventionally, in addition to the main stopper that normally opens and closes, an auxiliary stopper is provided at the outlet of the kettle, and this auxiliary stopper is operated to close when the hose fitted to the outlet of the kettle is detached. Kotsuku's safety device was activated.

During operation, only the auxiliary stopper is responsible for blocking the flow path of the kettle when the hose is detached, which is unsafe, and furthermore, in this case, the main stopper remains open. Therefore, if the hose that was unnecessarily detached is fitted back into the original pot, gas will flow towards the hose due to the opening of the auxiliary valve, and unburned gas will flow out from the burner section attached to the end of the hose. , it could be dangerous.

This design automatically closes the main valve when the hose is detached from the cockpit, and disables the subsequent opening operation, which is highly safe and prevents erroneous operation when the hose is detached. Our goal is to provide a safety device designed to ensure safety.

Below, based on an example illustrating this invention,
Explain in detail.

In Fig. 1, which shows a Kotoku to which the safety device of this invention is applied, the casing 1 has a flow passage 2 for circulating combustion gas on the lower side, and a storage chamber 3 for storing small parts etc. on the upper side. each formed. The flow path 2 is formed in an L-shape with an upstream side 2a extending horizontally and a downstream side 2b extending downward, and horizontal partitions are provided in the accommodation chamber 3 at intervals in the vertical direction. Wall 31 and stay 32
The storage chamber 3 is provided with a partition wall 31 to form an upper chamber 3a and a lower chamber 3b which are substantially sealed. 33 is a lid that closes the upper surface of the storage chamber 3.

A plug mechanism 4 is provided from the upstream side 2a of the flow path 2 toward the accommodation chamber 3 side, and this plug mechanism 4
These include a stopper 41 that opens and closes the intermediate portion of the upstream side 2a, an operating body 42 that rotates the stopper 41 via a rod 41a of the stopper 41, a stopper pressing spring 43 that elastically biases the stopper 41 downward, and a stopper. The plug body 41, whose main components include a torsion spring 44 that always rotationally biases the body 41 in the closing direction and an operating body pressing spring 45 that elastically biases the operating body 42 upward, is located in the middle of the upstream side 2a of the flow path 2. It has a communication hole 41b that passes through the body and communicates with the upstream side 2a in the radial direction of the body. The rod 41a is fixed upwardly on the upper surface of the stopper 41, and is arranged between the partition wall 31 and the stay 3 in the accommodation chamber 3.
It passes through 2. The operating body 42 is vertically movable and rotatably supported by the lid body 33, and has a spring receiver 42a formed on the lower storage chamber side 3 side, and a handle 42b formed on the outside of the upper part thereof. The plug pressing spring 43 and the torsion spring 44 are connected to the lower chamber 3.
The torsion spring 44 is interposed between the stopper 41 and the partition wall 31 in the interior of the stopper 41, and the lower end of the torsion spring 44 is fixed to the upper surface of the stopper 41, and the upper end thereof is fixed to the lower surface of the partition wall 31. Further, the operating body pressing spring 45 is interposed between the stay 32 and the spring receiver 42a.

The operating body 42 is engaged with the upper part of the rod 41a through a square hole so as to be able to move up and down and not be able to rotate relatively. 2), which can be engaged with an engagement groove (not shown) formed in the lid 33 when the stopper 41 is rotated to close.

Further, the operating body 42 has an engagement arm b fixed to the lower part of the handle 42b that projects in the radial direction.
An engagement hole c is formed at the end of the engagement arm b.

The downstream side 2b of the aforementioned flow path 2 extends downward, and the connecting pipe 1a into which the hose 6 is fitted is fixed to the lower part thereof. A movable member 5 is provided from the connecting pipe 1a toward the accommodation chamber 3 side.

This movable member 5 has an annular hose seat 51 fitted on the outer periphery of the connecting pipe 1a so as to be movable up and down, and a pair of arms 51a are connected to the casing 1 from the hose seat 51.
The discharge part 1b extends upward along the outside, and its upper end is fixed to a movable base 52, and the movable base 52 is equipped with first and second engaging members 53 and 54.

The movable base 52 is located in the upper chamber 3a of the storage chamber 3.
It is fitted and supported by the rod 41a of the stopper 41 so as to be movable up and down, and is constantly biased downward by a base pressing spring 55. A first engagement member 53 is attached to a portion of the base 52 that faces the spring receiver 42a of the operating body 42.
This first engagement tool 53 is made up of a plate-shaped engagement piece 53a whose proximal end is supported by a pin on the movable base 52, and whose distal end is rotated in the direction of the spring receiver 42a by a spring 53b. An engaging piece 53a is provided on the lower surface of the receiver 42a when the stopper 41 and therefore the operating body 42 are opened.
A V-shaped engagement groove d (Fig. 2) is formed which engages with the tip of this in an inclined state.

Further, one end of the base 52 is protruded to the outside of the casing 1, and a second arm 51b is fixedly raised upwardly from this part, and its upper end is bent and positioned above the handle 42b. A second engaging member 54 made of a pin member is fixedly suspended. This second engagement tool 54 fits into an engagement hole c formed at the tip of the engagement arm b of the handle 42b,
The plug body 41 and therefore the engagement arm b are arranged at a position where they face the engagement hole c when the engagement arm b is closed.

Note that 1c in the figure is a long hole formed in the casing 1, which allows the movable base 52 to move up and down.

Since this device has the above-mentioned configuration, when the hose 6 is fitted into the connecting pipe 1a which is the outlet part, the movable member 5 is moved through the hose seat 51 against the elastic force of the base pressing spring 55. It will be moved upwards. As a result, the second engagement tool 54 can be attached to the handle 42b.
This means that it is largely separated upward from the side engagement hole c.

When the plug mechanism 4 is opened in this state, the handle 42b is first pressed down against the elastic force of the operating body pressing spring 45 to urge the protrusion a on the spring bearing 42a side to the lid body 33.
The engaging groove (not shown) on the side is released.

Next, when the handle 42b is rotated 90 degrees in the opening direction against the elastic force of the torsion spring 44, the engagement groove d formed on the lower surface of the spring receiver 42a will face the first engagement member 53, and the engagement groove d will face the first engagement tool 53. (the state shown in Fig. 1). As a result, the plug body 41 is maintained in an open state,
Gas is supplied from the flow path 2 toward the hose.

Next, when closing the stopper 41, first use the handle 4.
By pushing down 2b further than above, the first
The locking piece 53a of the locking tool 53 is tilted at an acute angle and is disengaged from the locking groove d (second
condition). Next, when the handle 42b is rotated 90 degrees in the closing direction, the stopper 41 is also rotated in the same direction, and the flow path 2 is closed. If the handle 42b is released after this closing operation, the operating body presses. spring 45
The operating body 42 is moved upward by the elastic force, and the projection a of the spring receiver 42a engages with the engagement groove of the lid 33, locking the plug 41 in the closed state ( Note that even if the handle 42b is released after the engagement piece 53a is removed from the engagement groove d, the stopper 4
1 is rotated in the closing direction by the elastic force of the torsion spring 44, and the flow path 2 is also closed.

Next, when the hose 6 separates from the analysis connection pipe 1a during use, the movable member 5 is pressed downward by the elastic force of the base pressing spring 55, and the first engagement tool 53 is thereby moved by the spring receiver. 42a, the second engaging member 54 descends toward the engaging arm b on the handle 42b side. At the same time, the stopper 41
is rotated in the closing direction by the elastic force of the torsion spring 44, and in conjunction with this, the engaging arm b is also rotated in the same direction, and when the plug body 41 is operated to close,
The engagement hole c of the engagement arm b is connected to the second locking tool 54.
The second locking tool 54 is fitted into the engagement hole c, thereby preventing the operating body 42 from opening the plug 41 (the state shown in FIG. 4).

As explained above, this design automatically closes the main stopper when the hose separates from the pot, and disables the subsequent opening operation, so that the gas flow when the hose separates is prevented. It has a high shutoff function, prevents erroneous operation, and has the effect of extremely high safety.

[Brief explanation of drawings]

Figures 1 to 4 show vertical cross-sectional views of the main parts of a cockpit to which this invention is applied, and Figures 1 to 3 show how the hose is attached to the cockpit and the valve body is operated from opening to closing. FIG. 4 is a vertical sectional view of the main part showing the operating state, and FIG. 4 is a vertical sectional view of the main part showing the operating state when the hose is detached from the pot. 1...Casing, 1a...Connecting pipe, 1b...
Discharge part, 2...channel, 2a...upstream side, 2b...
Downstream side, 3...Accommodation chamber, 3a...Upper chamber, 3b...
... lower chamber, 31 ... partition wall, 32 ... stay, 3
3... Lid body, 4... Plug mechanism, 41... Plug body, 41
a...Rod, 41b...Communication hole, 42...Operation body, 42a...Spring holder, 42b...Handle, 43...
... Stopper pressing spring, 44 ... Torsion spring, 45 ... Operation body pressing spring, a ... Projection, b ... Engagement arm,
c...Engagement hole, d...Engagement groove, 5...Movable member,
51...Hose catch, 51a...Arm, 51b
...Second arm, 52...Movable base, 53...
First engagement tool, 53a...Locking piece, 53b...Spring, 54...Second engagement tool, 55...Base pressure spring, 6...Hose.

Claims (1)

[Scope of utility model claims] A plug mechanism 4 that is capable of opening and closing a flow path 2 formed in the casing 1 and is always elastically biased in the closing direction; The movable member 5 has a plug mechanism 4 which is locked and opened when the movable member 5 is operated in the other direction. A first engagement tool 53 for blocking the closing operation and a second engagement tool 54 for locking and blocking the opening operation of the plug mechanism 4 when the movable member 5 operates in one direction are provided. The plug mechanism 4 is a short safety device that is provided with an operating body 42 that can manually release the locking operation of the first engagement member 53 when the movable member 5 operates in the other direction.