JP3909726B2 - Meter gas stopper - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a meter gas stopper that is used in a gas meter pipe or the like and that restricts a fully closed position and prevents a handle from rotating from this position. The present invention also relates to a meter gas plug having a waterproof function between the gas plug body and the handle.
[0002]
[Prior art]
Conventionally, as this type of meter gas stopper, for example, there are those shown in FIGS. In the figure, reference numeral 10 denotes a gas plug body, in which a gas inflow path 10a and an outflow path 10b are formed, and a plug insertion hole 10c having a tapered hole shape between the inflow path 10a and the outflow path 10b. Is formed. A plug body 20 having a gas passage 20a is rotatably inserted into the plug body insertion hole 10c. By rotating the plug body 20, the center line of the gas passage 20a is connected to the inflow path 10a and the outflow path 10b. It is possible to switch between a fully opened state (the state shown in the figure) matched and a fully closed state in which the center line of the gas passage 20a is orthogonal to the inflow path 10a and the outflow path 10b.
[0003]
An operation lever 50 is attached to the plug body 20 through a connecting member 30 and a key member 40 so as not to rotate. The operation lever 50 is provided with a lock pin 60 so as to be movable in the direction of the axis of rotation of the plug body 20. The lock pin 60 is for preventing the operating lever 50 from being rotated by an unexpected accident or mischief in the fully open position or the fully closed position. In the fully open position, the lock pin 60 is formed in a recess 10d formed in the gas plug body 10. In the fully closed position, it is inserted into the recess 10e or 10f. Then, the lock pin 60 is lifted against the coil spring 70 with the knob 60a, and the operation lever 50 is rotated in this state to be fitted into any of the recesses 10d, 10e, 10f, or the fully open position or It is possible to prevent the operation lever 50 from rotating from the fully closed position.
[0004]
[Problems to be solved by the invention]
The meter gas plug is superior in that it can simultaneously control the position of the fully open position and the fully closed position and prevent rotation. However, these mechanisms are provided between three members: the gas plug main body, the operation lever, and the connecting member. Therefore, there is a problem that the structure is complicated and the processing is troublesome and the manufacturing cost is high.
[0005]
In addition, since this type of meter gas plug is installed outdoors, rust may be generated in the plug body. That is, normally no sealing means is provided between the gas plug main body and the handle, and the plug is in contact with the outside air. In this case, since the outer peripheral surface of the plug body is in contact with the inner peripheral surface of the plug body insertion hole, there is almost no risk of rusting, but the end surface of the plug body located on the opening side is in contact with the outside air, and the end surface is rusted. Will occur. Since this rust gradually progresses from the end surface toward the inside of the plug body, this causes a problem that the coating film of the plug body is destroyed, the rust spreads, the plug body becomes unable to rotate, and the rotational torque becomes extremely high. is there. For this reason, there is a conventional resin sheet material interposed between the gas plug body and the handle, or a rubber O-ring attached. However, the former has a dustproof effect and is not sealed and has a waterproof effect. There wasn't. In the latter case, the manufacturing cost is high and the rotational torque is high.
[0006]
Accordingly, the present invention first provides a meter gas plug that can be manufactured at a low cost with a simple structure that restricts the fully closed position and prevents forward and reverse rotation from that position. Still another object of the present invention is to provide a meter gas stopper having a waterproof and sealing function that can be easily and inexpensively provided between a gas stopper body and a handle.
[0007]
[Means for Solving the Invention]
The present invention provides a gas plug body, a plug body that is rotatably provided in the gas plug body, and that is rotated approximately 90 ° from the fully open position in the forward or reverse direction to be in a fully closed state. In a meter gas plug having a handle that engages with the upper part of the body and rotates the plug body, a protrusion is formed on the upper opening edge of the gas plug body over the circumferential direction at approximately 180 °, and the handle can be moved up and down. A rotation-preventing bolt is provided at a position opposed to the fully-closed position restricting bolt at approximately 180 °, and the fully-closed position restricting bolt is moved down in advance so as to abut against one stop wall of the protruding portion. None, the fully closed position is regulated by turning the plug so that the bolt for restricting the fully closed position hits the stop wall. At this time, the bolt for preventing rotation is the other stop which is separated by approximately 180 °. Located on the wall to prevent this rotation A Metagasu plug when taken to prevent a positive reverse rotation of the stopper by moving the belt until the locking to the other 衝止 wall.
[0008]
Here, it is desirable that the fully closed position restricting bolt or the rotation preventing bolt can be moved up and down only by a special tool. In the above description, the bolt includes a pin-like lock member that can be moved up and down by a structure using a spring or the like in addition to a normal screw-in bolt.
[0009]
According to this meter gas plug, the normal rotation of the plug body is restricted by the fully closed position restricting bolt hitting the one stop wall of the projecting portion and stopping. At this time, the rotation-preventing bolt is also screwed in until it hits the other stop wall, thereby restricting the rotation in the opening direction. That is, forward and reverse rotation of the plug body can be restricted at a time by stopping both bolts on the stopping walls at both ends of the common protruding portion. Since this is achieved only by the protrusion formed by cutting out the upper opening edge of the gas stopper body and the bolt member provided on the operation handle side, the structure is extremely simple and can be manufactured at low cost.
[0010]
The present invention also provides a gas plug body, a plug body that is rotatably provided inside the gas plug body, and that is rotated approximately 90 ° in the forward or reverse direction from the fully open position to be in a fully closed state. A meter gas plug having a handle that engages with the upper portion of the plug body and rotates the plug body, and a flange portion is formed on an outer periphery of the upper opening edge of the gas plug body, while a flange portion of the gas plug body of the handle is formed. An annular sleeve portion is formed at the opposing position, an inverted dish-shaped waterproof collar is interposed between the collar portion and the sleeve portion, and the waterproof collar is formed by pressing the side surface of the waterproof collar with the sleeve portion of the handle. A meter gas stopper having a lower end portion elastically deformed and pressure-bonded to the flange portion to wait for a waterproof sealing function. Note that the waterproof gas sealing function can be provided to the meter gas plug of the above-mentioned fully closed position regulation.
[0011]
According to this meter gas plug, both are partitioned by the inverted dish-shaped waterproof collar interposed between the collar portion of the gas plug main body and the sleeve portion of the handle. Further, the sleeve portion of the handle presses the taper side surface of the waterproof collar in the shape of an inverted dish from the top, and the lower end surface is crimped to the heel portion, so that waterproof sealing performance is obtained.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings of FIGS. 1 is a longitudinal sectional view of the assembled state of the meter gas stopper, FIG. 2 is a top view of the meter gas stopper of FIG. 1, FIG. 3 is a top view of the gas stopper body, FIG. 4 is a front view of the gas stopper body, and FIG. FIG. 6 is an enlarged sectional view of a portion to which a waterproof collar is attached.
[0013]
Reference numeral 2 in the drawing denotes a gas plug body, and an inflow path 2a, an outflow path 2b, and a plug body insertion portion 2c are formed therein. The plug body insertion portion 2c is rotatably provided with a cylindrical plug body 3 whose rotation axis is perpendicular to the inflow path 2a and the outflow path 2b and has a slightly tapered outer surface. The plug body 3 is formed with a gas passage 3a perpendicular to the rotation axis thereof, and the gas passage 3a is in the fully open state (the state shown in the figure) in the same direction as the inflow passage 2a and the outflow passage 2b. The gas passage 3a is switched to a fully closed state in which the gas passage 3a faces in a direction orthogonal to the inflow passage 2a and the outflow passage 2b.
[0014]
An operation handle 4 is attached to the upper portion of the plug body 3 via a spring member 5 so as not to rotate. This is an engagement formed by a concave and convex notch in a fitting concave portion 41 and an engaging flange portion 42 provided at the lower portion of the handle 4 and a fitting convex portion 31 in the upper portion of the plug body 3 and the opening portion 23 of the gas plug main body 2. It is attached by a combination with the protrusion 21. That is, the concave-convex cutout on the gas plug main body side has a shape indicated by 22 in FIG. 3, while the flange 42 on the handle side has a similar shape to this shape. Therefore, when the handle collar 42 is pushed down and fitted against the force of the spring member 5 along the concave and convex notch 22, the handle fitting recess 41 and the plug fitting projection 31 are fitted, At the same time, by turning the handle 90 ° from this position, the flange 42 and the engaging protrusion 21 are caught with each other to prevent the handle 4 from coming off, and the handle 3 and the gas plug body 2 are assembled.
[0015]
A protrusion 25 is formed on the upper outer edge 24 of the opening 23 facing the handle 4 of the gas plug body 2 over approximately 180 ° (exactly, a range smaller by the radius of the bolts 6 and 7 described below). Yes. The protrusion 25 can be easily formed by scraping the upper outer edge 24 of the opening over approximately 180 °. At this time, a blocking wall 25R is formed at one end of the protrusion 25 and a blocking wall 25L is formed at the other end at the same time. Further, a flange portion 26 is formed on the outer side of the upper outer edge 24 so as to protrude over the entire circumference.
[0016]
On the other hand, an annular sleeve portion 46 is formed at a position facing the collar portion 26 of the gas plug main body on the outer peripheral side of the handle 4. Further, a straight grip part 45 is formed at the upper part of the handle, and the fully closed position restricting bolt 6 is formed at one end of the grip part 45 and on the concentric circle center line of the protrusion part 25 of the gas plug body 2. Is screwed up and down. Also, a rotation preventing bolt 7 which can be moved up and down on the concentric center line of the projecting portion 25 is screwed into an opposing position spaced apart from the fully closed position regulating bolt 6 by 180 °. These fully closed position restricting bolts 6 and / or rotation preventing bolts 7 are screwed into the screw holes 43 and 44, but have a special shape that cannot be rotated by a normal + -driver or hex key wrench. Therefore, unless you have a special tool that fits this, you can not operate. In other words, mischief is prevented.
[0017]
The above meter gas plug 1 is attached to a gas meter pipe and is normally used in a fully open position. And sometimes it is necessary to return to the fully closed position to prevent rotation regulation and malfunction. In such a case, when the handle 4 is rotated approximately 90 ° in one direction from the fully open state shown in FIG. 1, the fully closed position restricting bolt 6 is screwed in advance so as to abut against the stop wall of the projecting portion 25. Therefore, the fully closed position restricting bolt 6 abuts against one stop wall 25R (or 25L, the same applies hereinafter). Thereby, the excessive rotation of the handle 4 is prevented and the fully closed position is restricted. In this state, the rotation preventing bolt 7 is separated from the fully closed position restricting bolt 6 by 180 °, so the rotation preventing bolt 7 is positioned immediately before the other stop wall 25L (25R). Will be. Therefore, if the rotation prevention bolt 7 is screwed here so as to abut against the stop wall 25L (25R), further rotation is prevented. As described above, the handle 4 is prevented from rotating in both forward and reverse directions by the fully closed position restricting bolt 6 and the rotation preventing bolt 7, thereby preventing malfunction in the fully closed position.
[0018]
According to the meter gas plug described above, the protrusion 25 provided by cutting out the upper opening edge 24 of the gas plug main body 2 forms the stop walls 25R and 25L at the same time, and these are the walls for restricting the fully closed position. Since it works not only as a wall but also as a wall for preventing rotation, it does not require extra processing and parts compared to the conventional one, and the structure is simple. Further, since the notch protrusions 25 are formed on the same plane and concentrically, they can be formed only by a simple process of scraping off the outer edge of the upper opening of the gas plug main body, so that it is inexpensive and labor-saving. As a result, the entire structure of the meter gas plug can be simplified and made compact.
[0019]
Next, the waterproof sealing function provided in the meter gas stopper will be described. First, as shown in FIG. 5, the prevention collar has a substantially inverted dish shape, and is a thin film made of polypropylene resin having a thickness of about 0.2 mm. The central portion is a through hole, and a flat portion 81 is formed on the outside thereof, and the side surface is formed of a parallel portion 82, a tapered portion 83, and a lower end portion 84. The waterproof collar 8 is coated with grease, and a flat portion 81 is attached to the opening edge 24 portion of the gas plug body, and is interposed between the handle 4. An extremely small chamfer 47 is formed on the inner peripheral end surface of the sleeve 46 on the handle side, and when the handle 4 is attached to the gas stopper main body 2, the taper surface 83 of the waterproof collar 8 is formed by the chamfer 47 of the sleeve. It can be pressed. Therefore, the taper surface 83 of the waterproof collar 8 is elastically deformed by this pressing force, and the lower end portion 84 thereof is pressure-bonded to the upper surface of the flange portion 26 of the gas plug body, thereby achieving a waterproof sealing function.
As described above, the intrusion of water and dust from the outside is completely prevented, and the plug body and the like do not rust.
[0020]
【The invention's effect】
The meter gas plug according to the present invention is provided with a full-close position restricting mechanism and a rotation prevention mechanism between the upper opening of the gas plug main body and the handle, so that the structure is extremely simple and the number of parts is reduced. Less. As a result, a meter gas plug that has a simple structure and can be manufactured at low cost is obtained.
In addition, since a waterproof and sealing function can be provided between the gas plug main body and the handle, the plug body and the like are not rusted, and the meter gas plug has a stable rotational torque.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an assembled state of a meter gas stopper according to an embodiment of the present invention.
FIG. 2 is a top view of the meter gas stopper of FIG.
FIG. 3 is a top view of the meter gas stopper main body.
FIG. 4 is a front view of a meter gas stopper main body.
FIG. 5 is a front view of a waterproof collar.
FIG. 6 is an enlarged cross-sectional view of a waterproof collar mounting portion.
FIG. 7 is a longitudinal sectional view of an assembled state showing an example of a conventional meter gas stopper.
FIG. 8 is a top view showing a state in which the handle of FIG. 7 is removed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Meter gas plug 2 ... Gas plug main body 2a ... Inflow path 2b ... Outflow path 2c ... Plug body insertion part 3 ... Plug body 3a ... Gas path 4 ... Handle 5 ... Spring member 6 ... Bolt 7 for full closing position regulation ... Restriction bolt 8 ... Waterproof collar 21 ... Engagement protrusion 22 ... Concavity and convexity notch 23 ... Main body opening 24 ... Upper outer edge 25 ... Protrusion 26 ... Gutter 25R, 25L ... Stop wall 31 ... Convex protrusion 41 ... concave portion of handle 42 ... collar portion 43, 44 of screw handle screw hole 45 ... grip portion 46 ... sleeve portion 47 ... chamfered portion 83 ... taper surface of waterproof collar 84 ... lower end surface of waterproof collar

Claims (2)

  A gas plug main body, a plug body that is rotatably provided inside the gas plug main body, and that is rotated approximately 90 ° in the forward or reverse direction from the fully opened position to a fully closed state, and an upper portion of the plug body. A meter gas plug having a handle for rotating the combined plug body, a protruding portion is formed on the upper opening edge of the gas plug body over the circumferential direction in a circumferential direction of approximately 180 °, and the handle is fully closed position controllable up and down. A rotation-preventing bolt is provided at a position opposite to the bolt for rotation approximately 180 °, and the fully-closed position restricting bolt is moved down in advance so as to abut against one of the blocking walls of the projecting portion. And the fully-closed position restricting bolt abuts against the stop wall to restrict the fully closed position. At this time, the turn-preventing bolt is located on the other stop wall separated by approximately 180 °. , This rotation prevention bolt in front Metagasu plug, characterized in that to prevent the forward or reverse direction of rotation of the plug body by moving up to engage the other 衝止 wall. 2. The meter gas plug according to claim 1, wherein the fully closed position regulating bolt or the rotation preventing bolt can be moved up and down only by a special tool.

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