JP2010261673A - Gas valve device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein when a liquid substance is brought into contact with a rod, the liquid substance is fixed between an O-ring and the rod, in particular, preventing the rod from returning from the valve open state of an on-off valve, and thus, even when extinguishing operation is performed by pushing an ignition/extinguishment button, the on-off valve is not closed. <P>SOLUTION: A projecting wall 22 surrounding the rod is protruded on a mounting face 23 of a valve body 2, and a blocking projection 24 positioned on the upper side of the projecting wall 22 and blocking a flow of a liquid substance to the projecting wall 22 is formed so as to come into close contact with a pressing mechanism 3 from the mounting face 23. A guide projection 33 positioned between the blocking projection 24 and the projecting wall 22, and having a longer dimension in right and left directions than that of the blocking projection 24, is protruded from the pressing mechanism 3 toward the mounting face 23 so as not to come into contact with the mounting face 23. A clearance is formed between the blocking projection 24 and the guiding projection 33 to perform here edge cutting of a flow of the liquid substance caused by capillarity. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a gas valve device that is built in a gas stove and controls the supply of gas to a gas burner.

  As a conventional gas valve device of this type, there is known a gas valve device that controls gas supply to a gas burner by pushing and operating a fire extinguishing button provided on the front surface of the gas stove. This gas valve device includes a valve main body having an on-off valve and a thermal power adjusting unit that controls the thermal power by increasing or decreasing the flow rate of the gas that has passed through the valve main body.

  The valve body is provided with a rod that protrudes forward while attached to the gas stove. When the rod is pushed into the valve body, the on-off valve is opened, and when the rod is returned forward, the on-off valve is closed. The forward / backward movement of the rod is performed by a push operation on the above-mentioned fire extinguisher button. In order to transmit the push operation on the fire extinguisher button to the rod, a push operation mechanism is attached to the front surface of the valve body.

  This push operation mechanism pushes the rod into the valve body when the fire extinguisher button is pushed, maintains the position of the rod with the open / close valve opened, and further pushes the fire extinguisher button against the rod. It has a function of releasing the holding and projecting the rod forward to close the on-off valve (for example, see Patent Document 1).

JP 2004-60898 A (FIGS. 2 and 4)

  An attachment surface to which a push operation mechanism is attached is provided on the front surface of the valve body, and an opening for moving the rod forward and backward is provided at the approximate center of the attachment surface. An O-ring is attached as a seal member in the opening so that gas does not leak from the gap between the rod and the opening.

  In the conventional gas valve device, the push operation mechanism is attached so as to be in close contact with the attachment surface. Therefore, when a liquid material such as spilled liquid flows out on the top plate which is the upper surface of the gas stove, the liquid material may flow into the gas stove and reach the gas valve device. Although the valve main body and the push operation mechanism are in close contact as described above, since the sealing property is not ensured, the liquid material enters the gap between the two due to capillary action. When the liquid comes into contact with the rod, it sticks between the O-ring and the rod. In particular, the rod does not return from the open state of the on-off valve, and the on-off valve is closed even if the fire extinguishing operation is performed by pressing the point fire extinguishing button. There is a risk of inconvenience of not speaking.

  In view of the above problems, an object of the present invention is to provide a gas valve device in which a liquid material such as boiled oil does not come into contact with the rod.

  In order to solve the above-mentioned problems, a gas valve device according to the present invention, in a state where it is attached to a gas stove, is a rod that can be advanced and retracted in the front-rear direction that protrudes forward from an attachment surface located on the front surface, and this rod is pushed backward. Pushing operation that is connected to the mounting surface of the valve body and pushes the rod rearward by pushing operation from the front to hold the opening and closing valve. In the gas valve device provided with a mechanism, a blocking projection that is located above the rod and blocks the flow of the liquid material to the rod is brought into close contact with either the mounting surface or the push operation mechanism. In addition, a guide protrusion that is located between the blocking protrusion and the rod and has a longer dimension in the left-right direction than the blocking protrusion is formed between the blocking protrusion and the blocking protrusion. A predetermined gap is formed, and is characterized in that projecting so as not to contact with one.

  When the liquid material flows between the mounting surface of the valve body and the push operation mechanism, a blocking protrusion is provided so that the liquid material does not flow directly to the rod. However, since the blocking protrusion is formed from one of the above and is in close contact with the other, there is a possibility that the liquid material may pass through this close contact portion by capillary action. However, since a space is provided between the blocking protrusion and the guiding protrusion, even if the liquid material enters below the blocking protrusion due to capillary action, the entry of the liquid material is once cut off there. Therefore, it does not arrive at the rod. Further, since the liquid material that has passed moves down along the other surface, a guiding protrusion is provided on the other side, and the liquid material that has passed is captured by the upper surface of the guiding protrusion. Then, the captured liquid material is guided to the left and right of the rod along the upper surface of the guide protrusion. In addition, since this guide protrusion is not in contact with one side, the liquid material flowing along the upper surface of the guide protrusion does not move to one side and flow down toward the rod.

  Next, the liquid material flowing left and right using the upper surface of the guide protrusion flows downward from the left and right ends of the guide protrusion, but it is desirable to further guide the liquid material to the left and right.

  Therefore, a guide surface that opposes the upper surface of the guide protrusion with a predetermined interval and guides the liquid material flowing left and right on the upper surface of the guide protrusion in the left-right direction of the guide protrusion from one side to the other. Form so as not to touch.

  If comprised in this way, it can prevent that the liquid substance which flowed along the upper surface of the induction | guidance | derivation protrusion wraps around the lower surface of an induction | guidance | derivation protrusion, and flows into the convex wall side.

  As is apparent from the above description, the present invention prevents the liquid material from coming into contact with the rod of the valve body even when the liquid material flows into the gas valve device. This does not cause a problem.

Perspective view showing the shape of the gas valve device A perspective view showing the shape of the mounting surface of the valve body The figure which shows the shape of the guidance protrusion formed in the push operation mechanism Sectional view showing the positional relationship between the blocking protrusion and the guiding protrusion Figure showing flow of liquid

  Referring to FIG. 1, reference numeral 1 denotes a gas valve device according to the present invention, which is built in a gas stove (not shown). The gas valve device 1 includes a valve main body 2 having a built-in on-off valve, which will be described later, in addition to the electromagnetic safety valve 20, and a thermal power adjusting unit 11 connected to the upper portion of the valve main body 2. A heating power adjusting lever 12 is attached to the heating power adjusting unit 11 so as to be swingable in the left-right direction. By operating the lever 11 left and right, the heating power of the gas burner is adjusted.

  A push operation mechanism 3 is attached to the front portion of the valve body 2 with a pair of left and right screws 13. The push operation mechanism 3 is provided with an operation portion 31 that protrudes forward, and is configured such that the tip of the operation portion 31 abuts on the rear surface of a fire extinguishing button (not shown). Accordingly, when the point fire extinguishing button is pushed, the pushing force acts on the operation unit 31 and the operation unit 31 is pushed backward. The push operation mechanism 3 has a built-in mechanism that holds the operation portion 31 when the operation portion 31 is pushed and releases the hold and returns the operation portion 31 to the front when the operation portion 31 is pushed again. . In addition, since the on-off valve, which will be described later, is opened at the position where the operation unit 31 is pushed backward, the on-off valve is kept open while the operation unit 31 is held at the pushed-in position. When the part 31 returns to the front, the on-off valve is closed. When the on-off valve is open, gas is supplied to the gas burner. When the on-off valve is closed, the supply of gas to the gas burner is stopped.

  Referring to FIG. 2, a mounting surface 23 is formed on the front surface of the valve body 2. The push operation mechanism 3 is attached to the attachment surface 23. An opening 21 is formed in the center of the mounting surface 23 so that a rod connected to the on-off valve protrudes forward. A convex wall 22 surrounding the opening 21 is formed so as to protrude forward from the mounting surface 23. Has been. A blocking protrusion 24 is formed above the convex wall 33. The dimension of the blocking protrusion 24 in the left-right direction is formed to be approximately the same as the dimension of the protruding wall 22 in the left-right direction, and thus the protruding wall 22 is covered by the blocking protrusion 24 from above. In addition, a guide surface 25 extending left and right from the lower surface of the blocking protrusion 24 was formed. The protruding amount of the guide surface 25 is set to be shorter than the protruding amount of the blocking protrusion 24 and is formed to be one step lower than the blocking protrusion 24.

  Screw holes 26 into which the screws 13 are screwed are formed on the left and right sides, and seats 27 surrounding the screw holes 26 are provided around the screw holes 26. The heights of the pair of seats 27 are formed to be the same as the height of the blocking protrusion 24, and when the push operation mechanism 3 is fixed with the screw 13, the blocking protrusion 24, the pair of seats 27, and the convex wall 22 The push operation mechanism 3 is in contact with a total of four locations with the end surface, and the mounting surface 23 and the guide surface 25 are configured not to contact the push operation mechanism 3.

  Referring to FIG. 3, the push operation mechanism 3 is formed with a convex portion 32 that fits into the opening 21, and a pair of left and right through holes 34 through which the screw 13 is inserted. In addition, a guide projection 33 is formed above the convex portion 32. The horizontal dimension of the guide protrusion 33 is set to be longer than the horizontal dimension of the blocking protrusion 24, and the left and right ends are slightly inclined downward.

  Referring to FIG. 4, when the push operation mechanism 3 is attached to the valve body 2, the blocking protrusion 24 and the convex wall 22 are in close contact with the push operation mechanism 3, and the guide protrusion 33 does not contact the attachment surface 23. In the present embodiment, a gap of about 0.5 mm is formed between the guide protrusion 33 and the mounting surface 23. In addition, a gap of about 1 mm is formed between the blocking protrusion 24 and the guide protrusion 33. Furthermore, the guide surface 25 faces the upper surface of the guide protrusion 33 with a predetermined interval. Reference numeral 4 denotes a rod, and an open / close valve 41 is attached to the rod 4. When the rod 4 is pushed rearward, the on-off valve 41 moves rearward and opens, and when the rod 4 returns forward, the valve element 41 is closed.

  Referring to FIG. 5, when a liquid material such as spilled oil flows into the connecting portion between valve body 2 and push operation mechanism 3 in such a configuration, most of the liquid material flows along the upper surface of blocking protrusion 24. It flows to the left and right and does not flow in the direction of the rod 4. However, a part of the liquid material penetrates the contact portion between the blocking protrusion 24 and the push operation mechanism 3 downward by capillary action and reaches the lower side of the blocking protrusion 24. However, since a gap of about 1 mm is secured between the blocking protrusion 24 and the guide protrusion 33 as described above, the entry of the liquid material due to the capillary phenomenon is cut off by this gap. In addition, since the liquid material that has entered flows along the surface on the push operation mechanism side, it is captured by the upper surface of the guide protrusion 33 provided on the push operation mechanism side. The liquid material captured on the upper surface of the guide protrusion 33 flows to the left and right along the upper surface of the guide protrusion 33.

  A part of the liquid material comes into contact with the guide surface 25 and moves from the upper surface of the guide projection 33 to the guide surface 25, and then is guided to the left and right away from the rod through the guide surface 25 and then flows downward.

  In this way, even if a liquid material such as spilled oil flows into the connecting portion between the valve body 2 and the push operation mechanism 3, the liquid material is all guided away from the convex wall 22 to the left and right. The liquid material is prevented from coming into contact with the enclosed rod 4.

  In addition, this invention is not limited to an above-described form, You may add a various change in the range which does not deviate from the summary of this invention. For example, in the above-described embodiment, the blocking protrusion and the guide surface are provided on the valve body 2 side, and the guide protrusion is provided on the push operation mechanism 3 side.

DESCRIPTION OF SYMBOLS 1 Gas valve apparatus 2 Valve main body 3 Push operation mechanism 4 Rod 22 Convex wall 23 Mounting surface 24 Blocking protrusion 25 Guide surface 33 Guide protrusion 41 Opening / closing valve

Claims (2)

  A valve provided with a rod that can be moved forward and backward in the state of being attached to the gas stove and projecting forward from an attachment surface located on the front surface, and an open / close valve that is opened when the rod is pushed backward. In a gas valve device having a main body and a push operation mechanism that is connected to a mounting surface of the valve main body and pushes the rod backward by a push operation from the front to hold the on-off valve in an open state. A blocking projection that is positioned to block the flow of liquid material to the rod is formed so as to be in close contact with either one of the mounting surface and the push operation mechanism, and is further positioned between the blocking projection and the rod. The guide projection, which is longer in the left-right direction than the blocking projection, is formed so that a predetermined gap is formed between the guiding projection and the blocking projection from the other side to the other side. Gas valve apparatus characterized by the set.   The guide surface that opposes the upper surface of the guide projection with a predetermined distance and guides the liquid material flowing left and right on the upper surface of the guide projection in the left-right direction of the guide projection does not contact the one to the other. The gas valve device according to claim 1, wherein the gas valve device is formed as described above.

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