JP5027724B2 - Gas stopper - Google Patents

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, there are formed a valve accommodating portion whose one end is opened and a gas inlet hole and a gas outlet hole which are opened on the inner surface of the valve accommodating portion, respectively. The valve body is provided in the valve housing portion so as to be rotatable between a closed position and an open position about a rotation axis passing through a central portion of the opening. The handle is disposed outside the plug body on the opening side 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, and when the valve body is turned to the closed position, the gas inflow hole and the gas outflow hole are blocked by the valve body, and the gas stopper is closed. Conversely, when the valve body is rotated to the open position by the handle, the gas inflow hole and the gas outflow hole are communicated with each other through a through hole provided in the valve body, and the gas stopper is opened.

  Since the handle is rotatable with respect to the plug body, there is a gap between them, and rainwater may enter the valve housing hole from the gap. Therefore, in a conventional gas stopper, a sealing member such as an O-ring is provided between the stopper body and the handle. This prevents rainwater from entering the valve housing portion from between the plug body and the handle.

  However, when the gap between the stopper main body and the handle is sealed, the pressure in the valve housing part greatly fluctuates in accordance with a change in the external temperature. As a result, various inconveniences may occur. For example, when the valve body is tapered, the valve body is pressed against the tapered hole of the valve housing portion by a spring, but when the inside of the valve housing portion becomes negative pressure, the valve body is in a direction opposite to the biasing direction of the spring. As a result, the sealing performance between the valve body and the valve accommodating hole is lowered. Further, in the case of a push-turn gas stopper, the handle is sucked and pushed down, so that the handle can be turned without being pushed down.

  In order to prevent such inconvenience, in the thing of the following patent document 1, while the air passage which connects a valve accommodating part and the exterior is formed in a handle | steering_wheel, a ventilation member is provided in this air passage. Yes. The ventilation member allows air to flow but prevents the rainwater from flowing. Therefore, it is possible to prevent the inside of the valve housing portion from being fluctuated with a change in the outside air temperature.

JP 2005-195055 A

  However, the ventilation member loses its air permeability relatively easily due to dust contained in rainwater. Then, the air passage will 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 inside of the valve housing portion greatly fluctuates with a change in the outside air temperature in a short period of time.

In order to solve the above-described problem, the present invention includes a valve main body having a valve housing portion having one end opened to the outer surface, a gas inflow hole and a gas outflow hole opened to the inner surface of the valve housing portion, and A valve body provided in the valve housing portion so as to be rotatable between a closed position and an open position about a rotation axis passing through a central portion of the opening portion, and one end portion of the valve housing portion is opened. A handle that is disposed outside the plug body and is non-rotatably connected to the valve body so as to rotate integrally with the valve body with respect to the plug body, and the valve body includes the valve An annular surrounding wall that surrounds the opening at one end of the housing is formed with its axis aligned with the axis of rotation of the valve body, and at one end located on the plug body side of the handle, An insertion hole into which the surrounding wall portion is inserted is formed, and the inner peripheral surface of the insertion hole and the outside of the surrounding wall portion are formed. An air passage having one end opened on an inner surface facing one end portion of the valve housing portion and the other end opened on one end surface of the handle. A first passage hole formed in the handle, having one end opened on an inner surface of the handle facing the valve housing portion , and the other end extending toward the other end of the handle. A second passage hole formed at one end of the handle and having one end opened on the one end surface of the handle and the other end extending toward the other end of the handle, and the other end of the handle. , a housing space and the other end portion of the first passage hole is opened, is formed annularly on the outside of the inside of the first passage hole of the handle, a first annular space communicating with the accommodating space, of the handle the inside of the first annular space Formed annularly on the side, said second annular space communicating with the other end portion of the second passage hole, the first and annularly extending the first annular space and the second annular along a second annular space An annular gap that communicates with the entire circumference of the space, and the width of the annular gap in the rotational axis direction of the valve body is in the rotational axis direction of the first and annular spaces and in a direction perpendicular thereto. It is characterized by being set narrower than each dimension.
In this case, the two second passage holes are formed, and when the rotation axis is oriented in the horizontal direction, one of the two second passage holes is the first passage hole. It is desirable that the second passage hole is located on the upper side and the other second passage hole is located below the first passage hole.
It is desirable that the annular gap is disposed so as to be located on one end side of the handle from the other end opening of the first passage hole in the rotation axis direction.
The first annular space is formed in an annular shape outside the accommodation space, and extends annularly along the first annular space between the first annular space and the accommodation space. A second annular gap is formed to communicate with the accommodation space over the entire circumference, and the width of the second annular gap in the rotation axis direction is orthogonal to the first annular space and the rotation axis direction of the accommodation space. It is desirable to set it to be narrower than each dimension in the direction to be.
The second annular gap is disposed so as to be located on the other end side of the handle with respect to the annular gap in the rotational axis direction, and on the one end side of the handle with respect to the other end opening of the second passage hole. It is desirable that
A protrusion that protrudes from one end side to the other end side of the handle is formed on a portion of the wall surface that divides the housing space on the one end side of the handle, and the first passage is formed on a front end surface of the protrusion. It is desirable that the other end of the hole is opened.

  According to the present invention having the above-described characteristic configuration, when the gas plug is used with the handle positioned above the plug body and the rotation axis of the valve body facing the vertical direction, the second passage hole opens. One end surface of the handle faces downward, and one end opening of the second passage hole faces downward. Therefore, rainwater that hits the floor surface or the ground and is reflected enters the second passage hole. Rainwater that has entered the second passage hole flows into the second annular space, and then tries to flow into the first annular space through the annular gap. However, since the width of the annular gap is narrower than the dimensions of the first and second annular spaces in the rotation axis direction and the direction orthogonal thereto, rainwater that has flowed into the second annular space enters the entire annular gap by capillary action. . Moreover, the rainwater that has entered the annular gap does not enter the first annular space due to the capillary phenomenon, so that the rainwater itself functions as a lid that blocks between the second annular space and the first annular space. Therefore, rainwater that has entered the second annular space from the second passage hole does not enter the first annular space through the annular gap. Therefore, it does not reach the first passage hole and does not enter the valve accommodating portion.

The best mode for carrying out the present invention will be described below with reference to the drawings.
1 to 19 show a first embodiment of the present invention. As shown in FIGS. 1 to 5, the gas stopper 1 of this embodiment has a stopper body 2, a ball valve (valve element) 3, and a handle 4.

  As shown in FIGS. 4 and 5, a valve accommodating portion 21, a gas inflow hole 22, and a gas outflow hole 23 are formed inside the plug body 2. One end portion (upper end portion in FIG. 4) of the valve accommodating portion 21 is open to the outer surface (upper surface in FIG. 4) of the plug body 2. On the outer surface of the plug body 2 where the valve housing portion 21 is opened, an annular surrounding wall portion 24 is formed that protrudes in the direction from the other end side to the one end side (upward in FIG. 4) of the valve housing portion 21. . In other words, one end portion of the valve accommodating portion 21 is opened at the distal end portion of the surrounding wall portion 24. The gas inflow hole 22 is disposed so as to be orthogonal to the axis of the surrounding wall portion 24. One end portion of the gas inflow hole 22 opens to one end surface (right end surface in FIG. 4) of the plug body 2, and the other end portion opens to one side portion of the inner surface of the valve housing portion 21. The gas outflow holes 23 are arranged in line with the gas inflow holes 22. One end portion of the gas outflow hole 23 opens to the other end surface (left end surface in FIG. 4) of the plug main body 2, and the other end portion opens to the other side portion of the inner surface of the valve housing portion 21.

  The ball valve 3 is accommodated inside the valve accommodating portion 21. The ball valve 3 is rotated around a rotation axis L by annular valve seat members 5 and 5 arranged on the side of the valve accommodating portion 21 on the gas inflow hole 22 side and on the side of the gas outflow hole 23, respectively. It is supported movably. The rotation axis L is disposed so as to pass through the centers of the valve accommodating portion 21 and the opening thereof and to be orthogonal to the center lines of the gas inflow hole 22 and the gas outflow hole 23. In other words, the rotation axis L is arranged so as to coincide with the axis of the surrounding wall portion 24.

  The ball valve 3 is rotatable between a closed position shown in FIG. 4 and an open position (see FIG. 17) spaced from the closed position by 90 ° in the circumferential direction around the rotation axis L. When the ball valve 3 rotates to the closed position, the gas inflow hole 22 and the gas outflow hole 23 are blocked by the ball valve 3. As a result, the gas stopper 1 is closed. When the ball valve 3 rotates to the open position, the gas inflow hole 22 and the gas outflow hole 23 communicate with each other through a through hole 31 formed in the ball valve 3. As a result, the gas stopper 1 is opened.

  The handle 4 is arranged on the upper side of FIG. 4 with respect to the plug body 2 and is rotatable about the rotation axis L with respect to the plug body 2. In addition, the handle 4 is non-rotatably connected to the ball valve 3 via the connecting member 6. Therefore, by rotating the handle 4, the ball valve 3 can be rotated between the closed position and the open position.

  The handle 4 is movable along the rotation axis L between the locking position shown in FIG. 4 and a release position spaced a predetermined distance from the locking position shown in FIG. . In addition, the handle 4 is urged in the direction from the release position to the locking position by the urging means 8 formed of a coil spring or other elastic member provided between the handle 4 and the connecting member 6, and is rotated. Except when doing so, it is positioned at the locking position. When the handle 4 is located at the locking position, the locking shaft 7 provided so as to cross the surrounding wall portion 24 relatively enters the locking recess 41. As a result, the handle 4 is non-rotatably locked to the surrounding wall portion 24 and thus to the plug body 2. When the handle 4 is moved from the locking position to the release position against the urging force of the urging means 8, the locking shaft 7 moves relative to the locking recess 41 upward in FIG. Escape from. As a result, the handle 4 can be turned and the ball valve 3 can be opened and closed. Note that the locking shaft 7 is inserted through a hole 4 a provided in the side portion of the handle 4 as shown in FIG. 8. The hole 4a is sealed by the plate material 4C and the seal plate 4D after the locking shaft 7 is inserted.

  An insertion hole 42 having a circular cross section is formed on the lower end surface of the handle 4, that is, the one end surface 4b on the plug body 2 side. The surrounding wall portion 24 is inserted into the insertion hole 42 so as to be rotatable relative to the rotation axis L. Between the inner peripheral surface of the insertion hole 42 and the outer peripheral surface of the surrounding wall portion 24, a seal member 9 made of an O-ring or the like is provided. The seal member 9 seals between the inner peripheral surface of the insertion hole 42 and the outer peripheral surface of the surrounding wall portion 24.

  When the space between the inner peripheral surface of the insertion hole 42 and the outer peripheral surface of the surrounding wall portion 24 is sealed by the seal member 9, it is possible to prevent rainwater from entering between them and entering the valve housing portion 21. it can. However, on the other hand, there is a possibility that the pressure inside the valve accommodating part 21 may fluctuate greatly as the outside air temperature changes. In order to prevent such inconvenience, in the gas plug 1, an air passage 10 is provided in the handle 4. One end of the air passage 10 opens on the inner surface of the handle 4 facing the valve accommodating portion 21, and the other end opens on the one end surface 4 b of the handle 4 where the insertion hole 42 opens.

  In order to explain the configuration of the air passage 10 in more detail, the configuration of the air passage 10 will be described while explaining the structure of the handle 4. The handle 4 includes a main body 4A that occupies most of the handle 4 and a lid 4B that is fixed to the upper end of the main body 4A in FIG. 4 (the other end of the handle 4). In the following, for convenience of explanation, the configuration of the air passage 10 will be described using the top, bottom, left, and right of FIG.

  As shown in FIGS. 8 and 10 to 15, a housing recess 43 having a rectangular shape in plan view is formed on the upper end surface of the main body 4 </ b> A in FIG. 4. The accommodation recess 43 is arranged so that the center thereof coincides with the rotation axis L. A space forming recess 44 is formed on the bottom surface of the housing recess 43. The shape of the space-constituting recess 44 in plan view is substantially similar to that of the housing recess 43, but is slightly smaller than that. Moreover, the space constituting recess 44 is arranged such that the center line thereof coincides with the center line (rotation axis L) of the housing recess 43. A protrusion 45 is formed at the center of the bottom surface of the space constituting recess 44. The shape of the protrusion 45 in plan view is substantially similar to the space constituting recess 44 but is smaller than the space constituting recess 44. Moreover, the projecting portion 45 is arranged such that the center line thereof coincides with the center line (rotation axis L) of the space constituting recess 44 and the longitudinal direction thereof coincides with the longitudinal direction of the space constituting recess 44. Therefore, an annular extending rectangular gap is formed between the outer peripheral surface of the protrusion 45 and the inner peripheral surface of the space constituting recess 44. A protrusion 46 having a circular shape in plan view is formed on the tip surface of the protrusion 45. The protrusion 46 has a diameter that is substantially the same as the width of the protrusion 45, and is arranged with its center line aligned with the center line (rotation axis L) of the protrusion 45.

  The lid 4B has a flat plate portion 47 as shown in FIGS. The flat plate portion 47 has a thickness substantially the same as the depth of the housing recess 43, is inserted into the housing recess 43, and is fixed by means such as adhesion. As a result, the space constituting recess 44 is sealed from the outside. A raised portion 48 is formed on the lower surface of the flat plate portion 47. The raised portion 48 has a substantially rectangular shape in plan view, and is arranged so that the center line thereof coincides with the rotation axis L. A large concave portion 49 is formed on the tip surface (lower surface) of the raised portion 48. The large recess 49 is arranged such that the center line thereof coincides with the rotation axis L. By forming the large concave portion 49, the raised portion 48 has a rectangular annular shape. A small recess 50 is formed on the bottom surface of the large recess 49. The small recess 50 is arranged such that the center line thereof coincides with the rotation axis L.

  The plan view shape of the large recess 49 is substantially similar to the plan view shape of the protrusion 45 and is larger than the protrusion 45. Therefore, a substantially rectangular space extending annularly around the rotation axis L is formed between the inner peripheral surface of the large recess 49 and the outer peripheral surface of the protrusion 45. This space is the first annular space 11 (see FIGS. 5 to 7).

  The shape of the raised portion 48 in plan view is substantially similar to the space constituting recess 44 and is smaller than the space constituting recess 44. Therefore, a substantially rectangular space extending in an annular shape with the rotation axis L as the center is formed between the outer peripheral surface of the raised portion 48 and the inner peripheral surface of the space constituting concave portion 44. This space is the second annular space 12 (see FIGS. 5 to 7).

  The height of the raised portion 48, that is, the amount of protrusion of the raised portion 48 from the lower surface of the flat plate portion 47 is set slightly smaller than the depth of the space constituting recessed portion 44. Therefore, a gap having a narrow vertical width is formed in an annular shape along the outer peripheral portion of the raised portion 48 between the front end surface (lower surface) of the raised portion 48 and the bottom surface of the space constituting recess 44. This gap is an annular gap 13. The width of the annular gap 13 (width in the direction of the rotation axis L) is such that when rainwater enters the second annular space 12, the rainwater does not immediately enter the first annular space 11 through the annular gap 13. Before that, the size is set so that rainwater first fills the entire annular gap 13 by capillary action. For this purpose, the width of the annular gap 13 is significantly narrower than the dimensions of the first and second annular spaces 11 and 12 in the direction of the rotation axis L and in each direction orthogonal thereto, for example, 1/3 or less. . The width of the annular gap 13 is experimentally determined based on the material constituting the main body portion 4A and the lid portion 4B, and is set to about 0.2 mm to 0.5 mm, for example.

  The length of the small recess 50 in the left-right direction in FIG. 5 is set shorter than the length of the protrusion 45 in the same direction, and the width in the direction orthogonal to the paper surface in FIG. It is set slightly narrower. Therefore, a space is defined by the inside of the small recess 50 and the tip surface (upper surface) of the protrusion 45. This space is the accommodation space 14.

  The inner surface located on the other end side of the handle 4, that is, the bottom surface of the small recess 50 is spaced upward from the tip surface of the protrusion 46. A hole that extends downward on the rotation axis L and opens to the inner surface (lower surface) of the handle 4 facing the other end portion (upper end portion) of the valve accommodating portion 21 is formed in the distal end surface of the protrusion 46. Yes. This hole is the first passage hole 15. Through the first passage hole 15, the valve accommodating portion 21 and the accommodating space 14 are communicated with each other. The tip surface of the protrusion 46 is located above the first and second annular spaces 11 and 12 and the annular gap 13. Therefore, the upper end opening of the first passage hole 15 is also located above the first and second annular spaces 11 and 12 and the annular gap 13.

  The bottom surface of the large concave portion 49, that is, the bottom surface of the large concave portion 49 excluding the portion where the small concave portion 50 is formed, is predetermined upward with respect to the tip surface of the protruding portion 45 (in the direction from one end side to the other end side of the handle 4) A substantially rectangular gap is formed between the bottom surface of the large concave portion 49 and the tip end surface of the protruding portion 45 so as to extend annularly along the peripheral edge portion. This gap is the second annular gap 16. The second annular gap 16 communicates the upper end portion of the first annular space 11 and the lower end portion of the accommodating space 14 over the entire circumference. The width of the second annular gap 16 in the rotation axis L direction is set to be substantially the same as the width of the annular gap 13 in the same direction. Therefore, even if rainwater accumulates in the first annular space 11, the rainwater does not immediately enter the accommodation space 14, and rainwater enters the entire second annular gap 16 by capillary action before that. . Since the second annular gap 16 is formed between the bottom surface of the large concave portion 49 and the tip surface of the protruding portion 45, the upper end portion of the first annular space 11 and the lower end portion of the accommodating space 14 in the vertical direction. It is located at the same position and is located below the upper end opening of the first passage hole 15.

  Two second passage holes 17 and 18 are formed in the main body portion 4A. The second passage holes 17 and 18 extend in parallel with the rotation axis L, and one end portions of each of the second passage holes 17 and 18 open on one end surface 4 b of the handle 4. The other end portion of one second passage 17 is open to the side surface of one end portion in the longitudinal direction of the second annular space 12. The other end portion of the other second passage 18 opens to the side surface of the other end portion in the longitudinal direction of the second annular space 12. As a result, the valve accommodating portion 21 is passed through the first passage hole 15, the accommodating space 14, the second annular gap 16, the first annular space 11, the annular gap 13, the second annular space 12, and the second passage holes 17 and 18. Open to the outside. That is, the air passage 10 is constituted by the first passage hole 15, the accommodation space 14, the second annular gap 16, the first annular space 11, the annular gap 13, the second annular space 12, and the second passage holes 17 and 18. .

  The two second passage holes 17 and 18 are arranged so as to satisfy the following conditions. However, this condition is not necessarily satisfied. As shown in FIGS. 6 and 7, the second passage holes 17 and 18 are separated from each other by 180 ° with the rotation axis L as the center. When the rotation axis L is directed horizontally and the handle 4 is rotated to the closed position, one of the second passages 17 is located above the first passage hole 15 and the other second passage hole 18. Is located below the first passage hole 15. Further, when the rotation axis is directed horizontally and the handle 4 is rotated to the open position, one second passage hole 17 is located above the first passage hole 15 as shown in FIGS. The other second passage hole 18 is located below the first passage hole 15.

  In the gas plug 1 having the above-described configuration, the space between the outer peripheral surface of the surrounding wall portion 24 of the plug main body 2 and the inner peripheral surface of the insertion hole 42 of the handle 4 is sealed by the seal member 9. Rainwater is prevented from entering the valve housing 21. Moreover, since the valve accommodating part 21 is open | released outside via the air path 10, it can prevent that the pressure in the valve accommodating part 21 fluctuate | varies greatly with the change of external temperature.

  1, 2, and 4, the gas plug 1 is used with the rotation axis L directed in the vertical direction and the handle 4 positioned on the upper side of the plug body 2 or is rotated. The axis L is used with the horizontal direction. Even if it is a case where it uses in any attitude | position, it can prevent that rainwater enters into the valve accommodating part 21 via the air path 10. FIG.

  First, when used in the former posture, as shown in FIG. 5, the opening in the one end face 4b of the second passage holes 17 and 18 faces downward, so that rainwater hits the floor or the ground. Then, it reflects and enters the second passages 17 and 18 from its lower end opening. Rainwater enters the second annular space 12 from the second passage holes 17 and 18. The rainwater that has entered the second annular space 12 has a narrow width in the direction of the rotation axis L of the annular gap 13, and therefore does not immediately enter the first annular space 11 through the annular gap 13, and the annular phenomenon is caused by capillary action. The entire gap 13 is filled. As a result, the space between the first annular space 11 and the second annular space 12 is covered with rainwater filling the annular gap 13. Therefore, rainwater hardly enters the first annular space 11. Therefore, rainwater can be prevented from entering the valve accommodating portion 21.

  Even if rainwater enters the first annular space 11, the second annular gap 16 is interposed between the first annular space 11 and the accommodating space 14, and the second annular gap 16 is annular. It functions in the same way as the gap 13. Therefore, it is possible to prevent rainwater that has entered the first annular space 11 from entering the accommodation space 14. Moreover, since the second annular gap 16 is disposed at the upper end of the first annular space 11, rainwater cannot enter the accommodation space 14 until it fills the first annular space 11. Thereby, it can prevent more reliably that rainwater enters in the accommodation space 14. FIG.

  Furthermore, even if rainwater enters the accommodation space 14, the opening in the accommodation space 14 of the first passage hole 15 is disposed at the upper end of the accommodation space 14, so that the accommodation space 14 is filled with rainwater. Until then, rainwater does not enter the first passage hole 15. Therefore, when the gas stopper 1 is used with the rotation axis L directed in the vertical direction, it is possible to almost certainly prevent rainwater from entering the valve accommodating portion 21 through the air passage 10. .

  Further, even when the gas stopper 1 is used with the rotation axis L directed in the horizontal direction, rainwater can be prevented from entering the valve housing portion 21 through the air passage 10. That is, as shown in FIG. 16, when the handle 4 is in the closed position in the state where the rotation axis L is directed horizontally, as shown in FIGS. 6 and 7, the second passage hole 17 is located above the second passage hole 18. Therefore, rainwater enters from the upper second passage hole 17 and flows out from the lower second passage hole 18. Rainwater entering from the upper second passage hole 17 first flows into the second annular space 12. Rainwater that has flowed into the second annular space 12 tends to enter the first annular space 11 through the annular gap 13. At this time, the capillarity of the annular gap 13 prevents rainwater from entering the first annular space 11 from the second annular space 12. As a result, rainwater that has entered the second annular space 12 accumulates in the lower part of the second annular space 12. Then, it flows out from the lower second passage hole 18. Therefore, rainwater can be prevented from entering the valve accommodating portion 21 through the air passage 10. Even if rainwater enters the first annular space 11, the rainwater enters the accommodation space 14 because the second annular gap 16 is interposed between the first annular space 11 and the accommodation space 14. There is no. Therefore, it can prevent more reliably that rainwater enters the valve accommodating part 21. FIG.

  As shown in FIG. 17, when the handle 4 is in the open position with the rotation axis L facing the horizontal direction, the second passage hole 17 is formed as shown in FIGS. 18 and 19. Located above the second passage hole 18. Accordingly, in this case as well, rainwater can be prevented from entering the valve accommodating portion 21 through the air passage 10 in the same manner as in the case where the handle 4 is located at the closed position.

  20 and 21 show a second embodiment of the present invention. In the gas plug 1 ′ of this embodiment, the handle 4 is fixed to the first connecting member 6A by the bolt B, the first connecting member 6A is non-rotatably connected to the second connecting member 6B, and further the second connecting member. The member 6B is connected to the ball valve 3 so as not to rotate. The bolt B is inserted into the first passage hole 15, but a gap that can form an air passage is formed between the inner peripheral surface of the first passage hole 15 and the bolt B. Therefore, the first passage hole 15 is not blocked by the bolt B, and the first passage hole 15 allows the upper end portion of the valve housing portion 21 and the housing space 14 to communicate with each other as in the above embodiment. In this gas plug 1 ′, since no locking shaft is used, the handle 4 is not formed with the hole 4 a, and the plate material 4 C and the seal plate 4 D are not used. Since other configurations are the same as those of the above embodiment, the description thereof is omitted.

In addition, this invention is not limited to the said embodiment, In the half which does not deviate from the summary, it can change suitably.
For example, in the above embodiment, the gas inflow hole 22 and the gas outflow hole 23 are arranged in a straight line, but may be arranged on lines orthogonal to each other.
In the above embodiment, the ball valve 3 is used as the valve body. However, a tapered valve body may be used instead of the ball valve 3. In that case, a tapered hole portion that rotatably accommodates the valve element is formed in the valve accommodating portion 21.
In the above-described embodiment, the two second passage holes 17 and 18 are formed, but the gas plugs 1 and 1 ′ have the longitudinal direction of the gas inlet hole 22 and the gas outlet hole 23 oriented in the horizontal direction. If it is used only in this state, only one of the second passage holes 17 and 18 may be formed.
Further, in the above embodiment, the first annular space 11, the second annular space 12, the annular gap 13, the accommodating space 14, and the second annular gap 16 are formed in a rectangular shape, but the shape is arbitrary. For example, it may be square or circular.

It is a perspective view which shows 1st Embodiment of this invention in the state which rotated the handle to the closed position. It is a perspective view which shows the embodiment in the state which orient | assigned the axis of rotation of the handle to the up-down direction, and rotated the handle to the open position. It is a top view which shows the same embodiment in the state which turned the handle | steering-wheel axis to the up-down direction, and rotated the handle to the closed position. It is sectional drawing which follows the XX line of FIG. It is sectional drawing which follows the YY line of FIG. It is an expanded sectional view which follows the XX line of FIG. It is an expanded sectional view which follows the YY line of FIG. It is a disassembled perspective view of the handle used in the embodiment. It is a perspective view which shows the cover part of the handle. It is a top view which shows the main-body part of the handle. It is sectional drawing which follows the XX line of FIG. It is sectional drawing which follows the XX line of FIG. It is sectional drawing which follows the YY line of FIG. It is sectional drawing which follows the YY line of FIG. It is a bottom view of the main-body part. It is sectional drawing which shows the embodiment in the state which orient | assigned the rotation axis of the handle to the horizontal direction, and rotated the handle to the closed position. It is sectional drawing which shows the embodiment in the state which orient | assigned the rotation axis of the handle to the horizontal direction, and rotated the handle to the open position. It is an expanded sectional view which follows the XX line of FIG. It is an expanded sectional view which follows the YY line of FIG. It is sectional drawing similar to FIG. 4 which shows 2nd Embodiment of this invention. It is sectional drawing similar to FIG. 5 which shows the same embodiment.

Explanation of symbols

L Rotating axis 1 Gas plug 1 'Gas plug 2 Plug body 3 Ball valve (valve)
4 Handle 4b One end face 10 Air passage 21 Valve housing portion 22 Gas inflow hole 23 Gas outflow hole 24 Surrounding wall portion 31 Through hole 11 First annular space 12 Second annular space 13 Annular gap 14 Housing space 15 First passage hole 16 First Two annular gaps 17 Second passage hole 18 Second passage hole

Claims (6)

Inside, a valve body having one end opened to the outer surface, a plug body formed with a gas inflow hole and a gas outflow hole opened to the inner surface of the valve housing, and a central portion of the opening in the valve housing A valve body rotatably provided between a closed position and an open position around a rotation axis passing therethrough, and one end portion of the valve housing portion is disposed outside the plug body, and the valve body A handle that rotates integrally with the valve body with respect to the plug body by being non-rotatably connected, and the plug body has an annular shape that surrounds the one end 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 inserted is formed at one end portion of the handle located on the plug body side, The space between the inner peripheral surface of the insertion hole and the outer peripheral surface of the surrounding wall portion is sealed by a sealing member. In the scan plug,
The handle is formed with an air passage having one end opened on an inner surface facing one end of the valve housing portion and the other end opened on one end surface of the handle.
The air passage is formed in the handle, one end is opened in the inner surface of the handle facing the valve accommodating portion , and the other end is formed in the handle and a first passage hole extending toward the other end side of the handle. A second passage hole having one end opened in the one end surface of the handle and the other end extending toward the other end of the handle; and the first passage hole formed inside the other end of the handle. a housing space and the other end portion is open, and is formed annularly on the outside of the inside of the first passage hole of the handle, a first annular space communicating with the accommodation space, the interior of the first annular said handle A second annular space that is annularly formed outside the space and communicates with the other end of the second passage hole ; and extends annularly along the first and second annular spaces, and the first annular space and the first annular space. Between the two rings to communicate with the entire circumference And the width of the annular gap in the rotational axis direction of the valve body is set to be narrower than the dimensions of the first and annular spaces in the rotational axis direction and in the direction perpendicular thereto. Characteristic gas stopper. Two second passage holes are formed, and when the rotation axis is oriented in the horizontal direction, one of the two second passage holes is located above the first passage hole. The gas stopper according to claim 1, wherein the gas stopper is disposed so that the other second passage hole is located below the first passage hole. 3. The gas according to claim 1, wherein the annular gap is disposed so as to be positioned closer to one end side of the handle than the other end opening of the first passage hole in the rotation axis direction. plug. The first annular space is formed in an annular shape outside the accommodation space, and extends annularly along the first annular space between the first annular space and the accommodation space. A second annular gap is formed to communicate with the accommodation space over the entire circumference, and the width of the second annular gap in the rotation axis direction is orthogonal to the first annular space and the rotation axis direction of the accommodation space. The gas stopper according to any one of claims 1 to 3, wherein the gas stopper is set to be narrower than each dimension in the direction in which the gas is to flow. The second annular gap is disposed so as to be located on the other end side of the handle with respect to the annular gap in the rotational axis direction, and on the one end side of the handle with respect to the other end opening of the second passage hole. The gas stopper according to claim 4, wherein the gas stopper is provided. A protrusion that protrudes from one end side to the other end side of the handle is formed on a portion of the wall surface that divides the housing space on the one end side of the handle, and the first passage is formed on a front end surface of the protrusion. The gas stopper according to any one of claims 1 to 5, wherein the other end of the hole is opened.

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