JP2010281336A - Gas valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas valve preventing pressure in a valve holding part from largely changing with change of outside temperature, and preventing rain water from entering an inside of the valve holding part. <P>SOLUTION: An annular surrounding wall part 22 surrounding an opening part of a valve holding part 21 is formed at an upper surface of a valve body 2. The surrounding wall part 22 is rotatably inserted in an insertion hole 41 formed at a lower surface of a handle 4. A ventilation passage 8 is provided on the handle 4. An end part inside of the ventilation passage 8 is communicated to the valve holding part 21. An end part outside of the ventilation passage 8 is opened to face the surrounding wall part 22. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a sealed gas stopper in which a gap between a stopper main body and a handle is sealed by a sealing member.

  Generally, a gas stopper has a stopper body, a valve body, and a handle. Inside the plug body, a valve housing part having one end opened on the outer surface of the plug body is provided. The valve housing is provided with a valve body that is rotatable between a closed position and an open position. The handle is disposed outside the valve main body so as to face the opening of the valve accommodating portion, and is connected to the valve body so as not to rotate. Therefore, the valve body can be opened and closed by the handle.

  An annular wall portion surrounding the opening of the valve housing portion is provided on the outer surface of the stopper body so that its axis coincides with the rotational axis of the valve body. On the other hand, an insertion hole is formed at the end of the handle on the plug body side. An annular wall portion is rotatably inserted into the insertion hole. A space between the inner peripheral surface of the insertion hole and the outer peripheral surface of the annular wall is sealed with a seal member. This prevents rainwater from entering the valve housing portion between the plug body and the handle.

  However, in the above structure, since the valve housing part is sealed from the outside, the pressure in the valve housing part greatly fluctuates in accordance with the external temperature change. As a result, various inconveniences may occur. For example, when the valve body and the valve housing part are formed in a tapered shape, the valve body is pressed against the inner peripheral surface of the valve housing part by urging the valve body toward the small diameter side of the valve housing part with a spring. However, if the inside of the valve housing part located on the larger diameter side from the valve body becomes negative pressure, the valve body is sucked and moved to the larger diameter side against the biasing force of the spring. And the sealing performance between the inner peripheral surface of the valve housing hole will be reduced. Further, in the case of the push-type gas stopper, the handle is pushed down by the negative pressure in the valve accommodating portion, so that the handle becomes rotatable.

  In order to prevent such inconvenience, in the thing of the following patent document 1, the ventilation path which connects the valve accommodating part and the exterior is formed in the handle | steering-wheel. Thereby, it is prevented that the pressure inside a valve accommodating part is fluctuate | varied largely with the change of external temperature. On the other hand, in order to prevent external rainwater from entering the valve housing through the air passage, the outer end of the air passage is opened at the lower surface of the handle, thereby allowing rainwater to enter the air passage. First, it is prevented. Moreover, even if rainwater enters the ventilation path, a ventilation member is provided in the ventilation path in order to prevent the rainwater from entering the valve accommodating portion. The ventilation member allows air to flow but prevents the rainwater from flowing. Therefore, it is possible to prevent rainwater from entering the valve housing portion.

JP 2005-195055 A

  However, the ventilation member loses air permeability within a relatively short time due to dust contained in rainwater. Then, the ventilation path is blocked by the ventilation member, so that it does not function at all. For this reason, in the gas stopper described in the above-mentioned Patent Document 1, there is a problem that the internal pressure of the valve housing portion greatly fluctuates with a change in the outside air temperature in a short period of time. Of course, if the ventilation member is removed, such a problem can be solved, but it becomes difficult to prevent rainwater from entering the valve housing portion through the ventilation path.

In order to solve the above-mentioned problem, the present invention enables a plug body in which a valve housing portion whose one end opens to the outer surface is formed inside, and the valve housing portion can be rotated between a closed position and an open position. A valve body that is housed, and a handle that is disposed outside the plug body so as to face the opening of the valve housing section and is non-rotatably connected to the valve body, and is provided on the outer surface of the plug body. The annular surrounding wall portion surrounding the opening of the valve accommodating portion is formed with its axis line coincident with the rotational axis of the valve body, and the surrounding wall portion is provided at one end of the handle on the plug body side. An insertion hole is formed in which the insertion hole is rotatably inserted, and a seal member seals between the inner peripheral surface of the insertion hole and the outer peripheral surface of the surrounding wall portion. A gas plug with a vent passage that communicates with the valve housing and is open to the outside. There, the outer end of the air passage which is open to the outside, is characterized in that it is arranged so as to partially opposed located outside than the sealing member of the surrounding wall portion.
In this case, one end of the vent path communicates with the valve housing portion, the other end communicates with the end face on the plug body side in the rotation axis direction of the handle, and one end communicates with the communication hole. The other end has an open passage portion facing the surrounding wall portion, and the other end opening portion of the communication hole is formed at one end portion of the handle, except for a portion facing the annular wall portion with respect to the outside. It is desirable that a shielding member for shielding is provided, and the open passage is formed between the guiding member and one end of the handle.

  According to the present invention, since the outer end of the vent path that is open to the outside is disposed so as to face the annular wall portion, rainwater can enter the vent path from the outer end. This can be prevented by the annular wall. Therefore, there is no need to provide a ventilation member in the ventilation path. Therefore, it is possible to prevent rainwater from entering the valve accommodating portion. In addition, since the ventilation member is not provided, the ventilation path is not blocked by the ventilation member. Therefore, it is possible to prevent a situation in which the pressure inside the valve housing portion varies greatly according to the change in the outside air temperature.

FIG. 1 is a sectional view showing a first embodiment of the present invention. FIG. 2 is an enlarged sectional view showing a main part of the embodiment. FIG. 3 is a bottom view of the handle used in the embodiment. 4A and 4B are diagrams showing a shielding member used in the embodiment. FIG. 4A is a plan view thereof, FIG. 4B is a front view thereof, and FIG. 4C is FIG. It is sectional drawing which follows the CC line of A). FIG. 5 is an enlarged sectional view showing a main part of the second embodiment of the present invention. FIG. 6 is a bottom view of the handle used in the embodiment. FIG. 7 is a cross-sectional view of the handle along the line XX in FIG. 5. FIG. 8 is an enlarged sectional view showing the main part of the third embodiment of the present invention.

The best mode for carrying out the present invention will be described below with reference to the drawings.
1 to 4 show a first embodiment of the present invention. The gas plug 1 of this embodiment has a plug body 2, a valve body 3, and a handle 4 as main components.

  A valve accommodating portion 21 is formed inside the plug body 2. The valve accommodating portion 21 is disposed at an intermediate portion of the plug body 2 in the left-right direction of FIG. 1 (hereinafter, “left and right and up and down” mean left and right and up and down in FIG. 1). The valve accommodating portion 21 has a lower main portion 21a and an upper communication hole portion 21b. The communication hole portion 21 b opens on the upper surface of the plug body 2. An annular surrounding wall portion 22 is formed on the top surface of the plug body 2 where the communication hole portion 21b opens, and surrounds the opening portion of the communication hole portion 21b. This surrounding wall part 22 is arrange | positioned so that the axis line may correspond with the rotating shaft line of the valve body 3 mentioned later.

An inflow hole 23 and an outflow hole 24 are formed inside the plug body 2. The inflow hole 23 is disposed at the left end portion of the plug body 2, and one end portion is opened on the left end surface of the plug body 21, and the other end portion is opened on the inner surface of the main portion 21 a. The outflow hole 24 is disposed at the right end portion of the plug body 2, and one end portion opens on the right end surface of the plug body 21 and the other end portion opens on the inner surface of the main portion 21 a. The inflow hole 23 and the outflow hole 24 are arranged on a straight line, but may be arranged so that the angle between them is a right angle.

  A pair of valve seat members 5, 5 made of resin or metal are provided at both left and right ends of the main portion 21 a of the valve accommodating portion 21. The pair of valve seat members 5 and 5 support the spherical valve element 3 so as to be rotatable between an open position and a closed position about a rotation axis that faces in the vertical direction. The rotation axis of the valve body 3 is matched with the axis of the surrounding wall portion 22. A gas hole 31 penetrating in the left-right direction is formed in the valve body 3. When the valve body 3 is positioned at the open position shown in FIG. 1, the inflow hole 23 and the outflow hole 24 communicate with each other through the gas hole 31, and the gas stopper 1 is opened. When the valve body 3 is rotated by approximately 90 ° from the open position and positioned at the closed position, the gap between the inflow hole 23 and the outflow hole 24 is blocked by the valve body 3, and the gas plug 1 is closed. The gas hole 31 is bent at a right angle when the inflow hole 23 and the outflow hole 24 are arranged so as to be orthogonal to each other.

  The connecting member 7 is inserted into the communication hole 21 b so as to be rotatable about the rotation axis of the valve body 3. The space between the outer peripheral surface of the connecting member 7 and the inner peripheral surface of the communication hole portion 21b is sealed with seal members C2 and C2 such as O-rings. The lower end of the connecting member 7 is connected to the valve body 3 so as not to rotate. Therefore, the connecting member 7 rotates integrally with the valve body 3.

  A handle 4 is arranged on the upper side of the plug body 2. An insertion hole 41 is formed on the lower surface of the handle 4 facing the plug body 2. The inner diameter of the insertion hole 41 is set to be slightly larger than the outer diameter of the surrounding wall portion 22. The surrounding wall portion 22 is inserted into the insertion hole 41 so as to be rotatable about its axis (rotation axis of the valve body 3) and movable in the axial direction. A space between the inner peripheral surface of the insertion hole 41 and the outer peripheral surface of the surrounding wall portion 22 is sealed with a seal member C1 such as an O-ring. Thus, external rainwater is prevented from entering the communication hole 21 b of the valve accommodating portion 21 through the space between the inner peripheral surface of the insertion hole 41 and the outer peripheral surface of the surrounding wall portion 22.

  The handle 4 is connected to the upper end of the connecting member 7 so as not to rotate. Therefore, the handle 4 is non-rotatably connected to the valve body 3 via the connecting member 7 and rotates integrally with the valve body 3. Therefore, the position of the handle 4 when the valve body 3 is in the open position is also referred to as the open position, and the position of the handle 4 when the valve body 3 is in the closed position is also referred to as the closed position.

  The handle 4 is of a well-known push type, and is connected to the upper end portion of the connecting member 7 so as to be movable in the vertical direction (the rotational axis direction of the valve body 3). The handle 4 is movable between a release position shown in FIG. 1 and an engagement position spaced apart from the release position by a predetermined distance, and is urged upward by an urging means 6 such as a coil spring. Yes.

Now, it is assumed that the handle 4 is located at the open position shown in FIG. At this time, the handle 4 is located at the release position, and the locking pin P prevents movement from the release position to the upper side (locking position side). However, the handle 4 is rotatable from the open position to the closed position when it is in the release position. When the handle 4 is rotated from the open position to the closed position, the handle 4 is moved from the release position to the locking position by the biasing means 6. Then, the locking pin P fits into the locking recess 44 of the handle 4. As a result, the handle 4 cannot rotate with respect to the plug body 2, and the handle 4 and the valve body 3 are maintained in the closed position. When the handle 4 located at the closed position is moved from the locking position to the release position against the biasing force of the biasing means 6, the locking pin P escapes from the locking recess 44. Therefore, the handle 4 can be rotated from the closed position toward the open position. When the handle 4 is rotated to the open position while maintaining the release position, the state shown in FIG. 1 is restored.

  The space between the inner peripheral surface of the insertion hole 41 and the outer peripheral surface of the surrounding wall portion 22 is sealed by a sealing member C1 such as an O-ring, and the inner peripheral surface of the communication hole portion 21b and the outer peripheral surface of the connecting member 7 are sealed. By sealing the space with the sealing member C2, the upper portion of the communication hole portion 21b is a sealed space sealed from the outside. In order to open this sealed space to the outside, a ventilation path 8 is formed in the handle 4. The ventilation path 8 is configured as follows.

  That is, a recess 42 is formed on the upper end surface of the handle 4. The opening of the recess 42 is sealed by the lid 9, so that a pool portion 8 a is formed inside the recess 42. The pool portion 8a is divided into an inner portion 8c on the inner side and an outer portion 8d on the outer side by a step-like bottleneck portion 8b. The inflow of water from the outer portion 8d to the inner portion 8c is prevented as much as possible by the bottleneck portion 8b.

  On the bottom surface of the recess 42 facing the inner portion 8c, a hole 8e is formed extending from the central portion to the bottom surface of the handle 4 facing the communication hole portion 21b. The reservoir 8a is communicated with the communication hole 21b (valve accommodating part 21) by the hole 8e.

  The handle 4 is formed with a communication hole 8 f that forms a part of the ventilation path 8. The communication hole 8f extends in parallel with the rotation axis, and its upper end is opened at the bottom surface of the recess 42 facing the outer portion 8d. A lower end portion of the communication hole 8 f opens at the lower end surface of the handle 4. The lower end opening of the communication hole 8f is disposed so as to face the upper surface of the plug body 2 when the handle 4 is in the open position. The lower end opening of the communication hole 8f may be disposed so as to face the upper surface of the plug body 2 when the handle 4 is located at the closed position.

  A passage constituting member 10 is fixed to the lower end portion of the handle 4. As shown in FIG. 4, the passage component member 10 has a substantially rectangular parallelepiped shape, and a recess 10 a is formed on the upper surface of the passage component member 10. One side portion of the recess 10 a is opened to the outside from one side surface of the passage constituting member 10.

  The passage constituting member 10 configured as described above has the concave portion 10a opposed to the lower surface of the handle 4, and the open portion of the concave portion 10a opposed to the portion of the surrounding wall portion 22 below the seal member C1. Thus, it is fixed to the lower end portion of the handle 4. The inside of the recess 10 a is shielded from the outside by the passage component 10 and the handle 4 except for the portion facing the surrounding wall portion 22. In addition, the outer end of the recess 10a faces the lower end opening of the communication hole 8f and communicates with the communication hole 8f. Therefore, the ventilation path 8 uses the inside of the recess 10a as a part thereof. That is, the inside of the recess 10 a is an open passage portion 8 g that is the outermost portion of the ventilation passage 8. Of course, the open passage 8g is shielded from the outside by the passage component 10 and the handle 4 except for the portion facing the surrounding wall 22.

  Thus, the ventilation path 8 is comprised by the hole 8e, the pool part 8a, the communicating hole 8f, and the open channel | path part 8g. And the hole 8e which is an inner side edge part of the ventilation path 8 is connected to the communication hole part 21b of the valve accommodating part 21, and the opening part of the open channel | path part 8g which is an outer side edge part is made to oppose the surrounding wall part 22. FIG. . Moreover, the opening of the open passage portion 8g is opened to the outside through a gap between the surrounding wall portion 22 and the inner peripheral surface of the insertion hole 41 and the inner surface of the passage constituting member 10. Therefore, the sealed space S is opened to the outside through the ventilation path 8.

  In the gas stopper 1 having the above-described configuration, the communication hole 21b of the valve accommodating portion 21 is opened to the outside via the ventilation path 8, so that the pressure inside the valve accommodating portion 21 increases as the outside air temperature changes. Fluctuation can be prevented. Further, the opening portion of the open passage portion 8 g which is an opening portion on the outside of the ventilation path 8 faces the surrounding wall portion 22. In other words, the opening of the open passage 8g is covered with the surrounding wall 22. Therefore, it is possible to prevent rainwater from entering the open passage portion 8g as much as possible. In particular, it is possible to prevent rainwater bounced off from the upper surface of the plug body 2 facing the lower end surface of the handle 4 from entering the open passage 8g. Even if rainwater enters the open passage 8g, the bottom surface of the open passage 8g and the lower end opening of the communication hole 8f are separated from each other in the vertical direction, so that rainwater that has entered the open passage 8g Furthermore, it can prevent entering into the communicating hole 8f. Therefore, it is possible to almost certainly prevent external rainwater from entering the valve accommodating portion 21 through the ventilation path 8.

  Next, another embodiment of the present invention will be described. In the following embodiment, only the configuration different from the above embodiment will be described, and the same components are denoted by the same reference numerals and the description thereof will be omitted.

  5 to 7 show a second embodiment of the present invention. In this embodiment, a portion corresponding to the passage constituting member 10 is integrally formed as a passage constituting portion 43 at the lower end portion of the handle 4. An open passage portion 8g is formed between the passage constituting portion 43 and the lower end surface of the handle 4.

  FIG. 8 shows a third embodiment of the present invention. In this embodiment, a horizontal hole 8h is employed instead of the open passage 8g. Therefore, the passage component member 10 is not used. That is, the lower end portion of the communication hole 8f is not opened at the lower end surface of the handle 4, and is disposed above the lower end surface. A horizontal hole 8 h extending in the radial direction is formed at the lower end of the handle 4. The outer end of the horizontal hole 8h intersects and communicates with the lower end of the communication hole 8f. The inner end of the horizontal hole 8 h is open to the inner peripheral surface of the insertion hole 41. Of course, the opening of the horizontal hole 8h communicates with the outside through a gap between the inner peripheral surface of the insertion hole 41 and the outer peripheral surface of the surrounding wall portion 22.

The present invention is not limited to the above-described embodiment, and the above-described embodiment can be modified without departing from the scope of the invention.
For example, in the above embodiment, a spherical valve element is used as the valve element 3, but a tapered valve element may be used instead of the valve element 3. In that case, the main part 21a of the valve accommodating part 21 is also formed in a taper shape.

  The gas stopper according to the present invention can be installed and used at a location where rainwater falls, such as outdoors.

C1 Seal member 1 Gas plug 2 Plug body 3 Valve body 4 Handle 8 Ventilation passage 10 Passage component member 8f Communication hole 8g Open passage portion 21 Valve housing portion 22 Enclosing wall portion

Claims (2)

A plug body in which a valve housing part having one end opened on the outer surface is formed, a valve body housed in the valve housing part so as to be rotatable between a closed position and an open position, and outside the plug body A handle that is disposed so as to face the opening of the valve housing portion and is non-rotatably connected to the valve body, and an outer surface of the plug body has an annular shape surrounding the opening of the valve housing portion The surrounding wall portion is formed with its axis line coincident with the rotation axis of the valve body, and an insertion hole into which the surrounding wall portion is rotatably inserted is formed at one end portion of the handle on the plug body side, A seal member seals a space between the inner peripheral surface of the insertion hole and the outer peripheral surface of the surrounding wall portion. The inner end portion of the handle communicates with the valve housing portion, and the outer end portion is external. In the gas stopper in which a vent passage opened to the
A gas stopper, characterized in that an outer end portion of the vent path opened to the outside is disposed so as to face a portion of the surrounding wall portion located outside the sealing member.   The vent path has one end communicating with the valve housing portion, the other end communicating with the end surface on the plug body side in the rotational axis direction of the handle, one end communicating with the communication hole, and the other end A passage that has an open passage portion facing the surrounding wall portion and shields the other end opening portion of the communication hole at one end portion of the handle from the outside except a portion facing the annular wall portion. The gas stopper according to claim 1, wherein a constituent member is provided, and the open passage portion is formed between the passage constituent member and one end of the handle.