JP3046894U - Explosion-proof gas automatic shut-off device with timer - Google Patents

Abstract

(57) [Summary] [Purpose] The apparatus itself does not have a risk of obstructing the gas flow, the internal structure is simplified, the number of parts is reduced, and the manufacturing or assembling work is facilitated. To provide an explosion-proof automatic gas shut-off device with a timer. The gas flow chamber 23 includes an inlet passage 51.
The gas is configured to flow linearly from the outlet to the outlet passage 52, and the on-off valve 60 is configured to advance and retreat in the gas flow direction.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an explosion-proof automatic gas shut-off device with a timer, and more particularly, to an explosion-proof gas automatic shut-off device capable of smoothly flowing an ultra-low pressure gas.

[0002]

[Prior art]

 For example, city gas is controlled to be opened and closed by an on-off valve usually called a gas cock, but this gas cock cannot shut off the flow of gas even if gas leaks. Therefore, an on-off valve called a fuse cock C as shown in FIGS. 6A and 6B is used. When a large amount of gas flows out when the rubber tube comes off, the fuse cock C shuts off the outlet of the flow path a with the fuse ball b and automatically stops the gas. It is a safety cock with built-in.

However, in the area where the underground piping is not used and the centralized piping is used, the cock C has an insufficient gas blocking effect due to a large gas pressure difference, and the cock C has a complete leak prevention. May be lacking.

In particular, when the gas reaches the end of the gas passage, the gas pressure is reduced, and the flow rate is significantly reduced. For example, when many households use the gas at the same time, such as during dinner, the gas pressure and gas flow rate at the end of the gas system becomes very small.

[0005] Therefore, recently, an explosion-proof gas automatic shut-off device with a timer is installed at the end of the gas passage so that the gas supply is stopped when the gas pressure falls below a predetermined pressure.

[0006] This explosion-proof automatic gas shut-off device G with a timer, for example, in the case of city gas, is mounted near a gas meter M as shown in Fig. 7A so that the gas supply is shut off when the gas pressure drops. It is provided near a gas appliance K such as a stove or the like, and is used to stop supplying gas when gas is used for a predetermined time.

The same applies to the case of propane gas, as shown in FIG. 7B, which is attached near the discharge part of the gas cylinder B or provided near the gas appliance K such as a stove.

The explosion-proof gas automatic shut-off device G with a timer itself has, for example, a ball valve 2 that shuts off when a high-pressure gas flows through a passage 1 through which the gas flows, as shown in FIG. A low-pressure shut-off valve 3 that shuts off the gas passage 1 when the gas pressure decreases, and an on-off valve 4 that opens and closes by a timer T. When the valve is opened by the timer T, the ball valve 2 The gas of a predetermined pressure is always supplied by the action of the low pressure cutoff valve 3 (see US Pat. No. 4,836,247, US Pat. No. 4,579,142).

[0009] The valve opening state by the timer T may be a valve opening state only for a predetermined time or a full day valve opening state.

[0010]

[Problems to be solved by the invention]

 However, in the conventional explosion-proof gas automatic shut-off device G configured as described above, the gas passage 1 does not extend linearly because the low-pressure shut-off valve 3 and the on-off valve 4 are provided in the gas passage 1. Due to the meandering structure, the gas pressure decreases in the device G and the flow rate also decreases. In particular, when an extremely low-pressure gas state occurs, such as when a large number of households use the apparatus at the same time, such as during dinner, the apparatus itself may obstruct the gas flow.

The internal structure of the device G is complicated due to the installation of the low-pressure shutoff valve 3 and the on-off valve 4 and the meandering gas passage 1, and the number of parts is large, and the manufacturing or assembling work is also required. This is bothersome and costly.

The present invention has been made in view of such a situation, and the device itself does not obstruct the gas flow, performs a smooth valve operation, has a simple internal structure, and has a small number of parts. An object of the present invention is to provide an explosion-proof automatic gas shut-off device with a timer which is advantageous in cost and easy to manufacture or assemble.

[0013]

[Means for Solving the Problems]

 In order to achieve the above object, the explosion-proof automatic gas shut-off device with a timer according to the present invention has two chambers partitioned by an elastic gasket inside a case body, and a timer section and a timer section in one chamber. A driving member for swelling the gasket toward the other chamber by the operation of the section, forming an inlet passage and an outlet passage for the gas in the other chamber; In the automatic explosion-proof gas shut-off device with timer provided with an on-off valve for shutting off and opening the gas, the other chamber is configured so that gas flows linearly from an inlet passage to an outlet passage, and the on-off valve Are configured to be advanced and retracted by a conversion mechanism that converts the expansion of the gasket into the gas flow direction.

The conversion mechanism has a support plate fixed to the ends of a pair of columns protruding from a partition wall that holds the periphery of a gasket that partitions the inside of the case body into two chambers. A valve rod is inserted into the mouth, and a lower end of an L-shaped cross section of the working plate is inserted into a through-hole formed at one end of the valve rod. An on-off valve made of an elastic material provided in contact with the valve body, and a coil spring for repelling the on-off valve toward an outlet port between the valve body and the support plate. A projecting rod provided at the other end of the valve rod is inserted through a center hole of a valve holder constituting an outlet port provided on the outlet passage side.

The driving member includes a cam attached to a lower end of a main shaft of the timer unit, a first driving plate moved in a lateral direction by the cam, and a rectangle into which a part of the first driving plate is inserted. An operating plate having a hole, and a second drive plate which is cut and raised when the rectangular hole is formed in the operation plate, and is vertically moved by a lateral movement of the first drive plate. The second drive plate is configured to abut on the gasket and swell.

[0016] The two chambers may be in a vertical positional relationship within the case body.

The operating plate has a horizontal plate portion provided in contact with the gasket, and a vertical plate portion vertically suspended from the horizontal plate portion, and a lower end portion of the vertical plate portion is thinned. The valve rod is inserted through the opening of the valve rod and rotatably mounted on the partition wall.

[0018] The inlet passage is provided with a ball valve that closes when high-pressure gas flows, and a manual valve opening mechanism that opens the closed ball valve is provided in an upper region of the ball valve. In the lower area, a height adjustment mechanism is provided to ensure that the ball valve closes the inlet port.

[0019]

[Action]

 According to the invention of claim 1, the inside of the case main body is partitioned into two chambers by an elastic gasket, the gasket is pressed toward the other chamber by the operating member on the timer side, and the other mechanism is pressed by the conversion mechanism. The on-off valve on the chamber side is operated to flow and shut off the gas, and the gas flows linearly from the inlet passage to the outlet passage. The on-off valve can be operated without obstructing the gas flow, and an on-off valve for shutting off and opening the gas flow is provided on the outlet passage side, where the on-off valve is opened and closed along the gas flow direction. By operating the valve, gas pressure can be used to shut off the gas flow, improving safety, simplifying the internal structure, and being independent in the two chambers. Production to be assembled, and the workability is improved, that Do is advantageous in terms of cost.

In the invention according to claim 2, the conversion mechanism has a pair of columns protruding from a partitioning edge of the case body, a support plate is fixed to the column, and a center through hole of the support plate is provided. A valve rod is inserted through the valve rod, an operating plate is inserted into one end of the valve rod, a valve body and an opening / closing valve are provided at the other end, and a coil spring is provided between the valve body and the support plate. With this configuration, the on-off valve can be reliably and smoothly moved back and forth in the gas flow direction.

In the invention according to claim 3, the driving member includes a cam attached to a lower end of the main shaft of the timer portion, a first driving plate moved laterally by the cam, and a first driving plate. (1) an operation plate having a rectangular hole into which a part of one drive plate is inserted; and a cut-and-raised portion formed when the rectangular hole is formed in the operation plate, and the first drive plate is moved vertically by a lateral movement thereof. And the vertical drive plate is configured to contact the gasket, so that the rotation of the timer main shaft can be reliably transmitted to the operation of the valve.

In the invention according to claim 4, the two chambers are arranged in a vertical positional relationship within the case body, so that the production or assembly in the two chambers becomes smoother.

In the invention according to claim 5, an operating plate having an L-shaped cross section as a whole comprising a horizontal plate portion abutting on the gasket and a vertical plate portion vertically suspended from the horizontal plate portion. Since the operating plate is rotatably caulked to the partitioning edge, the mounting of the operating plate is further improved.

According to the present invention, a ball valve that closes when high-pressure gas flows into the inlet passage is provided, and the closed ball valve is opened by a manual valve opening mechanism. Is adjusted by the height adjusting mechanism, so that the valve operation is performed smoothly.

[0025]

[Embodiment of the invention]

 Hereinafter, the present invention will be described based on an embodiment shown in the drawings.

FIG. 1 is a schematic cross-sectional view showing an apparatus according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the apparatus viewed from below, partially omitted, and FIGS. And FIG. 5 is a schematic sectional view showing a valve-open state of the device.

As shown in FIGS. 1 and 2, a device 20 according to the present embodiment includes a timer unit 30 provided in an upper chamber 22 of a case main body 21 and a gas unit provided in a lower chamber 23. And a gasket S having elasticity. The driving member D operated by the timer unit 30 controls the open / close valve 60 of the gas circulation unit 40 via the gasket S and the conversion mechanism 50. It opens and closes.

The timer unit 30 has a dial 31 at the upper end, and by rotating the dial 31 by a predetermined angle, a spring (not shown) stores resilient force. The main shaft 33 is rotated for a predetermined time, but the description is omitted because it is known.

The main shaft 33 extends as shown in FIGS. 2 and 3 through a substantially semicircular lower end plate 34, and opens and closes an opening / closing valve 60 of a gas flow portion 40 via a gasket S. It is connected to D.

The driving member D includes a cam 35 having a C-shaped cam surface attached to the lower end of the main shaft 33, a horizontal driving plate 36, a vertical driving plate 39, and the like. As shown in FIG. 3, a horizontal drive plate 36 provided on the lower end plate 34 is always in elastic contact with the cam 35, and the rotation of the cam 35 causes the horizontal drive plate 36 to move laterally as shown by a broken line. So that it is displaced toward The horizontal drive plate 36 is provided with a hook 36a. The hook 36a is projected into a rectangular hole 38 of an operation plate 37 provided close to the upper portion of the gasket S. And is in contact with the vertical drive plate 39 which is cut and raised when forming the plate. Therefore, when the cam 35 rotates, the horizontal drive plate 36 moves sideways, and the hook 36a of the horizontal drive plate 36 displaces the vertical drive plate 39 downward, and the gasket S moves through a section L, which will be described later. The operating plate 58 is displaced.

The gas flow section 40 has an inlet passage 41 and an outlet passage 42 that are communicated with the lower chamber 23 of the case body 21, and the gas flows straight from the inlet passage 41 to the outlet passage 42. The gas flow is prevented to prevent the gas pressure from dropping.

A ball valve 43 that closes when high-pressure gas flows is provided on the inlet passage 41 side. Above the ball valve 43, the closed ball valve 43 is opened. A valve opening mechanism 44 is provided, and a height adjustment mechanism 45 is provided at a lower portion so that the ball valve 43 reliably closes the inlet port I made of an elastic member. A valve holder 46 for forming an outlet port O and for smoothly operating an on-off valve 60 to be described later is fixed to the outlet passage 42 side.

In FIG. 2, reference numeral “47” denotes a filter, and “48” denotes a seat.

The upper chamber 22 and the lower chamber 23 are partitioned by a partition wall 51, and a central opening 52 of the partition wall 51 is hermetically sealed with a gasket S, so that the upper chamber 22 and the lower chamber 23 are separated. Although the gasket S is completely partitioned, the periphery of the gasket S is held by the partition wall 51. A conversion mechanism 50 is provided in the lower chamber 23 partitioned as described above. The conversion mechanism 50 has a support plate 54 whose ends are fixed by screws 53 to the tips of a pair of columns 52 suspended from the partition wall 51. The support plate 54 has an opening 55 at the center, and a valve rod 56 is inserted into the opening 55.

An opening 57 is formed at the left end of the valve rod 56, and a lower end 58a of an operating plate 58 having an L-shaped cross section is inserted therethrough. On the right end side of the valve rod 56, a valve body 59 and an on-off valve 60 made of an elastic material provided in contact with the valve body 59 are provided, and between the valve body 59 and the support plate 54. Is provided with a coil spring 61 for repelling the on-off valve 60 toward the outlet port O. A protruding rod 56a is provided at the right end of the valve rod 56. By inserting the protruding rod 56a into the center hole 46a of the valve holder 46, the on-off valve 60 can smoothly move substantially horizontally. I have.

In particular, the operating plate 58 having an L-shaped cross section is provided rotatably about a hinge 62 as shown in FIG. 4, and the operating plate 58 contacts the gasket S. It has a horizontal plate portion 58h provided in contact with it, and a vertical plate portion 58v suspended vertically from the horizontal plate portion 58h, and a lower end portion 58a of the vertical plate portion 58v is thinned, and as described above, a valve is provided. The rod 56 is inserted into the through hole 57.

The hinge 62 is formed by fixing a plate in which a U-shaped groove is initially formed to the partition wall 51 and inserting the pin 63 into the opening 64 a of the bracket 64 of the operating plate 58. The U-shaped plate is bent and fixed by caulking. In addition, the code | symbol "64" in FIG. 1 is packing, and "65" is a lower cover.

Next, the operation of the above embodiment will be described. For example, when the gas supply is to be stopped after the gas appliance K has been used for a predetermined time, the dial 31 of the timer unit 30 is rotated by a predetermined angle to set the timer. As a result, the main shaft 33 is rotated, and the spring 35 is capable of accumulating elasticity and the cam 35 at the lower end is rotated.

The rotation of the cam 35 moves the horizontal drive plate 36 horizontally as shown by a broken line, and the hook 36 a provided on the horizontal drive plate 36 contacts the vertical drive plate 39 and moves downward. The horizontal plate portion 58h of the operation plate 58 is pressurized via the gasket S. Due to this pressurization, the operation plate 58 rotates around the hinge 62, and tilts the vertical plate portion 58v clockwise in FIG. 1 to a state shown in FIG. Since the lower end 58a of the vertical plate portion 58v is inserted through the opening 57 of the valve rod 56, the tilting moves the valve rod 56 to the left. Open the outlet port O against the force.

As a result, the gas flows from the inlet passage 41 toward the outlet passage 42. In this case, even when the gas pressure is low and the gas flow amount is small, the gas circulation unit 40 allows the gas flow to flow linearly from the inlet passage 41 to the outlet passage 42. Therefore, there is no danger that the gas pressure in the gas flow section 40 decreases. Therefore, the gas flow is not hindered in the gas distribution unit 40, and the gas pressure and gas at the end of the gas system are not different from those in the case where many households use gas at the same time, such as during dinner. Even if the flow rate is extremely low and the gas is in a very low pressure state, the gas can be used effectively and rice can be cooked in a normal state.

Then, when the set time of the timer section 30 has elapsed, the pressing of the horizontal driving plate 36 by the cam 35 is released, and the horizontal driving plate 36 returns to the original position. Further, the vertical drive plate 39 is also returned to the original position, the pressurization of the gasket S is released, and the operating plate 58 moves the valve rod 56 toward the outlet port O by the resilience of the coil spring 61, and opens and closes the valve. 60 closes the outlet port O. This closing applies not only the resilience of the coil spring 61 but also the gas pressure, and reliably shuts off the gas flow.

When assembling the explosion-proof gas automatic shut-off device with a timer, the upper chamber 22 and the lower chamber 23 are not mechanically connected to each other. The part 30 and the like and the gas flow part 50 on the lower chamber 23 side can be assembled independently. Therefore, the work at the time of assembling or manufacturing can be performed in another place, so that the workability is extremely improved and the work itself becomes easy. In particular, since the internal structure of the gas circulation unit 50 is extremely simple as compared with the conventional structure, the number of parts is reduced, which is advantageous in cost.

The present invention is not limited to the above-described embodiment, but can be variously modified within the scope of the present invention. For example, in the explosion-proof gas automatic shut-off device with a timer according to the above-described embodiment, the timer portion may be either electrical or mechanical, and any type that can press the gasket G after a predetermined time has elapsed. A structure can also be adopted.

[0044]

[Effect of the invention]

 As described above, according to the present invention, two chambers are formed in the case main body by using an elastic gasket, and the gasket is pressed toward the other chamber by the operation member on the timer side. Then, the on-off valve on the other chamber side is operated by the conversion mechanism so that the gas flows and shuts off, and the gas flows linearly from the inlet passage to the outlet passage. The on-off valve itself can be operated without obstructing the gas flow, and does not obstruct the gas flow.In addition, an on-off valve that shuts off and opens the gas flow is provided on the outlet passage side. Since the on-off valve is operated in the gas flow direction, the gas flow can be shut off by using the gas pressure, safety is improved, and the internal structure is simplified, and two channels are used. Independently manufactured to be assembled to, improved workability, it is advantageous in terms of cost in.

According to a second aspect of the present invention, in the conversion mechanism, a pair of columns are provided so as to protrude from a partition wall of a case body, a support plate is fixed to the columns, and a valve rod is provided in a central opening of the support plate. And an operating plate is inserted into one end of the valve rod, a valve body and an open / close valve are provided at the other end, and a coil spring is provided between the valve body and the support plate. Can be reliably and smoothly moved back and forth in the gas flow direction.

According to a third aspect of the present invention, the driving member includes a cam mounted on a main shaft of a timer unit, a first driving plate movable in a lateral direction, and a part of the first driving plate. An operating plate having a rectangular hole, and a second driving plate cut and raised when the rectangular hole is formed in the operating plate and moved vertically by the lateral movement of the first driving plate. Since the vertical drive plate presses the gasket, the rotation of the main shaft of the timer can be reliably transmitted to the operation of the valve.

According to the invention of claim 4, the two chambers are arranged in a vertical positional relationship within the case body, so that the production or assembly in the two chambers becomes smoother.

According to a fifth aspect of the present invention, there is provided an actuation plate having an overall L-shaped cross section including a horizontal plate portion abutting on a gasket and a vertical plate portion vertically suspended from the horizontal plate portion. Since the operating plate is rotatably caulked to the partitioning edge, the mounting of the operating plate is further improved.

In the invention according to claim 6, a ball valve that closes when high-pressure gas flows on the inlet passage side is provided, and the closed ball valve is opened by a manual valve opening mechanism, and the ball valve is opened. Since the position of the valve is adjusted by the height adjustment mechanism, the valve can be operated smoothly.

[Submission date] November 5, 1997

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0002

[Correction method] Change

[Correction contents]

[0002]

2. Description of the Related Art For example, city gas is controlled to be opened and closed by an on-off valve usually called a gas cock. However, this gas cock cannot shut off gas flow even if gas leaks. Therefore, an on-off valve called a fuse cock C as shown in FIGS. 6A and 6B is used. The fuse cock C, the rubber tube outside which, when the multi-volume gas flows out, the fuse ball b blocks the outlet of the flow path a by the pressure of the gas the outflow, automatically stops the gas over outflow It is a safety cock with a built-in prevention mechanism.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0003

[Correction method] Change

[Correction contents]

However, this cock C is underground piping is long, in areas where centralized piping is used, for the pressure difference of the gas is large, as the case Ri there when inadequate blocking effect of gas leakage Prevention may also lack integrity.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005] For such gas lines having a reduced gas pressure or gas flow rate , recently, an explosion-proof type automatic gas shut-off device with a timer is installed at the end of the gas line so that the gas pressure is lower than a predetermined pressure. , The supply of gas is stopped.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

[0013]

[Means for Solving the Problems]

In order to achieve the above object, the explosion-proof automatic gas shut-off device with a timer according to the present invention has two chambers partitioned by an elastic gasket inside a case body, and a timer section and a timer section in one chamber. A driving member for swelling the gasket toward the other chamber by the operation of the section, forming an inlet passage and an outlet passage for the gas in the other chamber; An explosion-proof gas automatic shutoff device with a timer provided with an on-off valve for shutting off and opening the gas, wherein the other chamber is configured so that gas flows linearly from an inlet passage to an outlet passage, and the gasket is The swelling is converted by a conversion mechanism into an advancing and retreating operation in the gas flow direction of the on- off valve .

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0027

[Correction method] Change

[Correction contents]

As shown in FIGS. 1 and 2, a device 20 according to the present embodiment includes a timer unit 30 provided in an upper chamber 22 of a case main body 21 and a gas unit provided in a lower chamber 23. and a distribution unit 4 0, this between them outright specification by a gasket S having a resilient drive member D which is actuated by the timer unit 30 via a gasket S and the conversion mechanism 50 of the gas distribution part 40 on-off valve 60 Is opened and closed.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction contents]

[0034] and the upper chamber 22 and lower chamber 23 are partitioned by a partition wall 51, seals the central opening 5 1a of this partition wall 51 hermetically by a gasket S, an upper tea Nba 22 and the lower chamber 23 The periphery of the gasket S is held by the partition wall 51. The conversion mechanism 50 is provided in the lower chamber 23 thus partitioned. The conversion mechanism 50 has a support plate 54 whose ends are fixed to the ends of a pair of columns 52 suspended from the partition wall 51 by screws 53. The support plate 54 has an opening 55 in the center, and a valve rod 56 is inserted into the opening 55.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0042

[Correction method] Change

[Correction contents]

When assembling the explosion-proof gas automatic shut-off device with a timer, the upper chamber 22 and the lower chamber 23 are not mechanically connected to each other. Section 30 and the like, and the lower chamber 23 side is a gas flow section. 4 0 can be assembled independently of each other. Therefore, the work at the time of assembling or manufacturing can be performed in another place, so that the workability is extremely improved and the work itself becomes easy. In particular, the gas distribution department4The internal structure of “0” is extremely simple as compared with the conventional one, so that the number of parts is reduced, which is advantageous in terms of cost.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of an apparatus according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same device.

FIG. 3 is a plan view showing a main part of FIGS.

FIG. 4 is a perspective view showing a main part of FIGS.

FIG. 5 is a schematic sectional view showing a valve-open state of the same device.

FIG. 6 is a schematic sectional view showing a conventional fuse cock.

FIG. 7 is a schematic view showing a usage example of a general automatic gas shut-off device.

FIG. 8 is a sectional view showing an example of a recent explosion-proof gas automatic shutoff device with a timer.

[Explanation of symbols]

21: case body, 22, 23: chamber, 30: timer section, 33: spindle, 35
... Cam, 36 ... First drive plate,
37 ... working plate, 38 ... rectangular hole, 39
... second drive plate, 41 ... inlet passage, 42 ... outlet passage, 43 ... ball valve, 44 ... valve opening mechanism, 45 ... height adjustment mechanism, 46 ... valve holder, 46a ... center hole, 50 ... conversion mechanism,
51 ... partition wall, 52 ... prop,
54 ... support plate, 55 ... central entrance,
56: valve rod, 56a: projecting rod,
57 ... port, 58 ... operating plate,
58a: lower end, 58h: horizontal plate, 58
v: vertical plate, 59: valve body, 60:
On-off valve, 61 ... Coil spring, I ... Inlet port, D ... Drive member, O ... Outlet port,
S: Gasket.

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[Procedure amendment]

[Submission date] November 5, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 5

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] Claim 6

[Correction method] Change

[Correction contents]

6. A ball valve (43), which closes when high-pressure gas flows, is provided in the inlet passage ( 41), and a valve is closed in an upper region of the ball valve (43). A manual valve opening mechanism (44) that opens the ball valve (43), and a ball valve (43)
Height adjustment mechanism to ensure that the inlet port (I) is closed.
The device according to any one of claims 1 to 5, wherein (45) is provided.

[Procedure amendment]

[Submission date] November 5, 1997

[Procedure amendment 11]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 12]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

FIG. 2

[Procedure amendment 13]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Change

[Correction contents]

FIG. 4

Claims (6)

[Utility model registration claims] An interior of a case body (21) is divided into two chambers (22, 23) by an elastic gasket (S), and a timer section (30) is provided in one chamber (22). A driving member configured to expand the gasket (S) toward the other chamber (23) by the operation of the part (30).
(D), and a gas inlet passage (5
1) and an outlet passage (52), and an explosion-proof type gas automatic shut-off device with a timer provided with an on-off valve (60) for shutting off and opening the gas flow on the side of the outlet passage (52). The chamber (23) is configured so that the gas flows linearly from the inlet passage (51) to the outlet passage (52), and the on-off valve (60) controls the expansion of the gasket (S) so that the gas flows. An explosion-proof automatic gas shut-off device with a timer, which is configured to advance and retreat by a conversion mechanism (50) for changing the direction. 2. The conversion mechanism (50) includes a pair of projections (51) provided around a gasket (S) that partitions the inside of the case body (21) into two chambers (22, 23). Prop (52)
A support plate (54) fixed to the tip of the support plate (54), a valve rod (56) is inserted into a central opening (55) of the support plate (54), and is opened at one end of the valve rod (56). Entrance
(57), the lower end (5) of an operating plate (58) having an L-shaped cross section
8a), and the other end of the valve rod (56) is provided with a valve body (59) and the on-off valve (60) made of an elastic material provided in contact with the valve body (59). Provided, an on-off valve (60) between the valve body (59) and the support plate (54).
And a projecting rod (56a) provided at the other end of the valve rod (56) is provided on the side of the outlet passage (42). 2. The device according to claim 1, wherein the device is inserted through a center hole (46a) of a valve holder (46) constituting an outlet port (O). The driving member (D) is provided with the timer unit (3).
A cam (35) attached to the lower end of the main shaft (33) of (0),
A first drive plate (36) that is moved laterally by the cam (35), an operation plate (37) having a rectangular hole (38) into which a part of the first drive plate (36) is inserted; A second drive plate (39) which is cut and raised when forming the rectangular hole (38) in the operation plate (37) and is moved vertically by the lateral movement of the first drive plate (36); The device according to claim 1, characterized in that the second drive plate (39) is adapted to bulge against the gasket (S). 4. Apparatus according to claim 2, wherein the two chambers (22, 23) are in a vertical relationship within the case body (21). 5. The operating plate (58) includes a horizontal plate portion (58h) provided in contact with the gasket (S), and a vertical plate portion vertically suspended from the horizontal plate portion (58h). 58v), and the lower end (58a) of the vertical plate (58v) is thinned,
The apparatus according to any one of claims 2 to 4, wherein the valve rod (56) is rotatably caulked to the partition wall (51) by being inserted through the opening (57). 6. The inlet passage (51) is provided with a ball valve (43) that closes when high-pressure gas flows, and a closed ball valve is provided in an upper region of the ball valve (43). A manual valve opening mechanism (44) for opening the valve (43), and a ball valve (43) in the lower area
Height adjustment mechanism to ensure that the inlet port (I) is closed.
The device according to any one of claims 1 to 5, wherein (45) is provided.