JP6986741B2 - Gas plug cover - Google Patents

Description

The present invention relates to a gas plug cover, particularly a gas plug cover that is attached to the gas plug to protect the gas plug from heat.

As shown in FIG. 5, a general gas plug has a pipe accommodating portion (31a) (31b) communicating with both sides and a cylindrical portion (33) extending to an upper open end. The gas plug main body (31) made of 30), the pipe (3) through which the gas insertion hole (3a) penetrates and is rotatably housed in the pipe accommodating portion (30), and the cylindrical portion (33). It is equipped with an operation knob (4) that is rotatably attached and rotates the thread (3). ), A gas flow path leading to the pipe connection cylinder portion (31b) on the downstream side is formed through the gas insertion hole (3a).
The cone accommodating portion (30) has a tapered inner peripheral surface (35) that expands in diameter upward, and the cone (3) has a tapered outer peripheral surface (36) along the tapered inner peripheral surface (35). It is formed in the shape of an inverted truncated cone, and when the operation knob (4) is rotated, the thread (3) has a tapered outer peripheral surface (36) and a tapered inner peripheral surface (30) of the thread accommodating portion (30). Rotate in the cone accommodating portion (30) while sliding contact with 35).

Also, between the back surface of the operation knob (4) and the top surface of the thread (3), a presser spring (5) for holding the thread (3) in the state of being pushed into the thread accommodating portion (30). Is intervened in a compressed state, and the shear spring (3) is accommodated in a state of being pushed toward the bottom side of the shear accommodating portion (30) by the urging force of the presser spring (5).

Since the gas plug is entirely made of cast iron, it has the property of being thermally deformed. When the gas plug is placed in an environment where the temperature changes slowly, there is no problem because the gas plug body (31) and the wire (3) are thermally deformed with the same degree of expansion and contraction, but for example, a commercial kitchen. If the gas plug is strongly affected by the radiant heat from the combustion equipment, or if it is exposed to hot water or hot oil like the gas plug used in, the gas plug body (31) located on the outside will not be located inside. The temperature may rise before 3), and only the gas plug body (31) may thermally expand.
When the inner diameter of the tapered inner peripheral surface (35) of the spiral housing portion (30) expands due to the thermal expansion of the gas plug main body (31), the flange (3) housed inside the taped inner peripheral surface (35) becomes a presser spring. Due to the urging force of (5), it is pushed deeper into the bottom side of the expanded spring housing (30). In this state, when the gas plug body (31) is cooled naturally or by being exposed to cold water, the inner diameter of the tapered inner peripheral surface (35) is contracted, and the tapered outer peripheral surface (36) of the taper (3) is contracted. ) Is pressurized by the tapered inner peripheral surface (35) of the spiral housing (30).

If sufficient grease is interposed between the tapered inner peripheral surface (35) of the strand housing (30) and the tapered outer peripheral surface (36) of the strand (3), the coefficient of friction between them will be. As it becomes smaller, as the inner diameter of the tapered inner peripheral surface (35) of the grease accommodating portion (30) shrinks, an ascending force is applied to the grease (3) that has sunk to the bottom side of the grease accommodating portion (30). It works and can push the grease (3) up along the taper to return it to its original position. However, if the grease becomes thin or the base oil component is depleted due to the repeated opening and closing of the gas plug over a long period of time, the coefficient of friction between the sliding surfaces increases, and in this case, the storage unit ( The grease (3) that has sunk to the bottom side of 30) does not rise, but contracts. Tightened. As a result, it becomes difficult to rotate the screw (3) with the operation knob (4), which has the inconvenience of hindering the opening / closing operation of the gas plug.

In order to solve the above problem, as in Patent Document 1, in order to prevent the gas plug body (31) from suddenly rising in temperature or cooling, the entire gas plug is covered with a cover, and the gas plug is covered with hot water or high temperature. It is conceivable to prevent the oil or cold water from splashing.

Jitsukaihei 2-25798 Gazette

However, since the conventional cover has a configuration in which the main body cover and the knob cover are integrally provided, for example, if the main body cover is attached to the gas plug main body (31) and the knob cover is attached to the operation knob (4) at the same time. With the cover attached, the operation knob (4) cannot be rotated, and the knob cover must be removed each time the gas plug is opened or closed. Further, since the main body cover is configured to be attached so as to wrap the entire gas plug main body (31), for example, the bottom of the gas plug main body (31) is close to the wall surface of the kitchen, the top plate of the system kitchen, or the like. It is difficult to retrofit to an existing gas tap installed in a contact manner. Further, when the knob cover is attached to the operation knob (4), the open / closed state of the gas plug cannot be confirmed. For these reasons, the above-mentioned conventional cover is not easy to use.

The present invention relates to "a gas plug main body in which a gas flow path is formed from an upstream pipe connection cylinder portion to a downstream pipe connection cylinder portion via a pipe accommodating portion.
When the gas flow path is opened and closed by being rotatably accommodated in the storage unit,
A cylindrical portion connected to the open end side of the spiral housing portion in a state where the operation convex portion protruding from the center of the top surface of the spiral is fitted into the concave portion in the center of the back surface in a relative rotation blocking state. An operation knob that is mounted so as to prevent it from coming off and that can rotate the cylinder in the cylinder housing.
In the gas plug cover that is interposed between the operation knob and the pipe and is provided with a urging means for urging the pipe to the bottom side of the pipe accommodating portion, it is easy to attach to the existing gas plug. It is an object of the present invention to provide a gas plug cover that can be attached to the vehicle, the open / closed state of the gas stopper can be confirmed even when the gas stopper is attached, and the operation knob can be operated.

The solution of the present invention taken to solve the above problems is "a main body cover provided with a knob insertion hole through which the operation knob can be inserted and which covers the outer surface of the gas plug main body from the operation knob side.
It is provided separately from the main body cover, has an outer surface shape that follows the top surface shape of the operation knob, and has an inner surface shape that can accommodate the operation knob in the same direction as the outer surface shape in a substantially close contact state, while being open. It consists of a knob cover and
Both the main body cover and the knob cover are made of heat-resistant resin.
The knob cover is provided with an engaging portion that can be engaged with the operation knob so as not to come off.
With the main body of the gas plug covered with the main body cover and the knob cover attached to the operation knob to engage the engaging portion, the open end of the knob cover hits the peripheral edge of the knob insertion hole of the main body cover. It is set to touch. "

The above technical means operate as follows.
Insert the operation knob into the knob insertion hole, and attach the main body cover so as to cover the outer surface of the gas plug main body.
In addition, since the inner surface shape of the knob cover allows the operation knob to be accommodated in a substantially close contact state, the knob cover is attached to the operation knob in a non-rotating state and can be removed by engaging the engaging portion with the operation knob. It can be installed in the stopped state.
When the main body cover is covered with the gas plug main body and the knob cover is attached to the operation knob in the above manner, the open end of the knob cover comes into contact with the peripheral edge of the knob insertion hole of the main body cover. The open end of the knob cover attached to the operation knob by the engaging part to prevent it from coming off, the main body cover covered with the gas plug main body is pressed, and the main body cover is inadvertently attached to the gas plug main body. The gas plug body can be reliably protected without floating or shifting.
In addition, since the knob cover and the main body cover are provided separately, even when the main body cover is attached to the gas plug main body and the knob cover is attached to the operation knob, the operation knob can be rotated to open and close the gas flow path. Can be done. Furthermore, since the outer surface shape of the knob cover is formed to follow the shape of the top surface of the operating knob housed in the knob cover, check the open / closed state of the gas flow path with the knob cover attached. Can be done.

In the gas plug cover, preferably, "an annular flange portion having a predetermined width is projected outward from the peripheral edge of the knob insertion hole of the main body cover and the open end of the knob cover, respectively.
With the main body cover attached to the gas plug main body and the knob cover attached to the operation knob, the facing surfaces of the annular flanges are set to abut each other. "
The main body cover and the knob cover that are attached to the gas plug are in contact with each other's annular flanges, so that the main body cover is pressed securely and evenly by the knob cover, and the main body cover is the gas plug main body. It can be installed more reliably in a fall-prevention state.

In the gas plug cover, it is preferable that "the main body cover is formed in a shape that continuously opens in the pipe connecting direction of the gas plug main body and at least in one other direction".
Since the main body cover is configured to open in the pipe connection direction and at least in one other direction so as to be continuous with the main body cover, the main body cover is operated from the predetermined direction of the gas plug into the knob insertion hole. It can be attached by covering the gas plug body while inserting the. Therefore, it is easy to attach / detach to / from the existing gas plug.

In the gas plug cover, preferably, "with the operation knob housed in the knob cover, a hole is provided at a predetermined position of the knob cover corresponding to the sealing hole provided in the operation knob.
The knob cover is configured to be connected to the operation knob via a connecting member that can communicate with the hole portion and the sealing hole. "
Generally, in order to seal the gas plug in the closed state, the operation knob is provided with a sealing hole for inserting a sealing wire material connected to the gas plug main body. When the operation knob is housed in the knob cover, the knob cover can be attached to the operation knob by providing a hole at a predetermined position of the knob cover corresponding to the sealing hole and communicating and fixing the connecting member to both. On the other hand, it is securely connected to the retaining state and does not come off carelessly.

The main body cover can be easily attached to and removed from the gas plug main body by simply inserting the operation knob into the knob insertion hole and covering it from the top surface side of the gas plug main body. Can also be installed.
The knob cover is attached to the operation knob in a retaining state by engaging the engaging portion with the operation knob, and in this state, the open end of the knob cover is the knob of the main body cover covered with the gas plug body. Since it is configured to contact the peripheral edge of the insertion hole, the main body cover covered with the gas plug main body is held down by the knob cover attached to the operation knob in a retaining state, and it is inadvertently lifted or displaced from the gas plug main body. There is no such thing. Therefore, the main body of the gas plug is surely protected from radiant heat from the combustion device, scattered hot water, and high-temperature oil by the main body cover, and thermal expansion and contraction can be prevented. In other words, since the diameter of the storage unit does not repeatedly expand and contract due to temperature changes, it is difficult for the storage unit to rotate while being pushed to the bottom side of the storage unit by the urging force of the urging means. Is prevented, and the smooth opening and closing operation of the diameter by the operation knob can be maintained for a long period of time.

In addition, since the knob cover and the main body cover are provided separately, even when the main body cover is attached to the gas plug main body and the knob cover is attached to the operation knob, the operation knob can be rotated together with the knob cover to allow gas flow. You can open and close the road.
In addition, since the inner surface shape of the knob cover is such that the operation knob can be accommodated in a substantially close contact state, the knob cover is attached to the operation knob in a non-rotating state and is formed one size larger than the operation knob. Therefore, it is easy to support by hand. Therefore, even when the operation force applied to the operation knob is slightly large when opening and closing the gas flow path, the rotation operation can be easily performed by grasping and rotating the knob cover.
Furthermore, since the outer surface shape of the knob cover is shaped to follow the shape of the top surface of the operation knob housed in the inner surface, if a protrusion or the like indicating the direction of the gas flow path is provided on the top surface of the operation knob. You can check the opening and closing of the gas flow path by using the protrusion that appears on the knob cover as a mark.

It is an exploded perspective view which shows the gas plug cover and the gas plug of embodiment of this invention. It is a perspective view which shows the state which only the main body cover of the gas plug cover of embodiment of this invention is attached to a gas plug. It is explanatory drawing which shows the state which attached the gas plug cover of embodiment of this invention to a gas plug. It is sectional drawing of the use state which shows the state which attached the gas plug cover of embodiment of this invention to a gas plug. It is explanatory drawing of the general gas plug.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the accompanying drawings.
FIG. 1 is an exploded perspective view of a gas plug cover (100) according to an embodiment of the present invention and a gas plug to which the gas plug cover (100) is mounted. FIG. 2 shows a main body cover (1) mounted on the gas plug of FIG. It is a perspective view which shows the state which made it put, and FIG. 3 shows the state which also attached the knob cover (2).
As a gas plug to which the gas plug cover (100) is attached, a gas plug similar to the conventional cast iron gas plug shown in FIG. 5 can be adopted, and in FIG. 1, a cylindrical portion (33) is provided at the upper open end. Piping connection cylinders that are connected to each other on both sides of the fuselage accommodating part (30) that is connected and accommodates the inverted truncated cone-shaped spiral (3) and the body of the spiral accommodating portion (30). The gas plug main body (31) is composed of (31a) and (31b). When both open ends of the gas passage hole (3a) penetrated through the pipe (3) are directed toward the pipe connection cylinder (31a) (31b), the gas plug is opened and the upstream pipe connection cylinder is opened. A gas flow path is formed from (31a) to the gas outflow cylinder portion (31b) on the downstream side through the gas passage hole (3a) of the pipe (3). When the tube (3) is rotated 90 degrees from this opened state, the gas flow path is blocked and the gas plug is closed.

A pair of operating convex portions (32) (32) projecting from the center of the top surface (34) of the cylinder (3) are prevented from rotating relative to each other in the concave portion (not shown) in the center of the back surface of the operating knob (4). With the operation knob (4) fitted in the state, the operation knob (4) is attached to the cylindrical portion (33) in a retaining state and relatively rotatable. As a result, by rotating the operation knob (4), the thread (3) can also be rotated in the same direction, and the gas flow path can be opened and closed.
A presser spring (5) is interposed between the top surface (34) of the thread (3) and the back surface of the operation knob (4), and the presser spring (3) is formed by the presser spring (5). While being pressed toward the bottom side of the spring accommodating portion (30), it is rotated in the spring accommodating portion (30) by the rotation operation of the operation knob (4).

On the top surface of the operation knob (4), an operation protrusion (41) is projected along a gas passage hole (3a) of the thread (3) along one diameter. That is, as shown in FIG. 1, the gas plug is opened when both ends (41a) (41b) of the operation protrusion (41) are located on the pipe connection cylinder portions (31a) (31b), respectively. The gas plug is in the closed state when it is in the plug state, rotated 90 degrees from that state, and the operating protrusion (41) is in a posture orthogonal to the pipe connection cylinders (31a) and (31b). You can see that.
Further, both end portions (41a) (41b) of the operation protrusion (41) are formed to have a length protruding outward from the outer peripheral surface of the circular body portion of the operation knob (4), and one end portion thereof. (41a) is penetrated by a sealing hole (40) for inserting a sealing wire (not shown) when the gas plug is sealed in the closed state. The end portion (41a) on the side where the sealing hole (40) is formed is attached so as to be on the upstream side of the gas flow path in the opened state.

Next, the gas plug cover (100) will be described.
The gas plug cover (100) consists of a main body cover (1) that covers the gas plug body (31) in a substantially close contact state and a knob cover (2) that covers the operation knob (4) in a substantially close contact state. Both are made of heat-resistant resin.

The main body cover (1) is continuously opened downward in the drawing in the direction of pipe connection to the pipe connection cylinders (31a) (31b) of the gas plug main body (31), and the operation knob is on the top surface. A knob insertion hole (10) having a size that allows insertion of (4) is open. That is, the main body cover (1) has both side surfaces of the gas plug main body (31) including the pipe accommodating portion (30) and the pipe connection cylinder portion (31a) (31b) on both opposite sides of the knob insertion hole (10). A pair of protective plates (12) and (12) that protect each are in a hanging shape.
In addition, the shape of the upper side of both open portions (13a) (13b) in the pipe connection direction in the protective plate (12) (12) is on the two sides of the top of the hexagonal tubular pipe connection cylinder part (31a) (31b). It is formed in a mountain shape along it.

The shape of the knob insertion hole (10) is such that both ends (41a) of the operation protrusion (41) are located at opposite positions in the pipe connection direction in the circular hole through which the shallow circular body of the operation knob (4) can be inserted. The relief portions (10a) and (10b) for inserting (41b) are formed in a continuous shape.
Further, the annular flange portion (11) is projected over the entire outer peripheral edge of the knob insertion hole (10) including the relief portion (10a) (10b).

The knob cover (2) that covers the operation knob (4) from above has an outer surface shape that follows the top surface shape of the operation knob (4), and is located at the position corresponding to the operation protrusion (41). , The protrusion cover portion (21) is projected. This protrusion cover portion (21) is hollow, and the entire top surface of the operation knob (4) is omitted in the knob cover (2) while the operation protrusion (41) is inserted into the protrusion cover portion (21). It can be housed in close contact. As a result, the knob cover (2) is covered with the operation knob (4) in a non-rotating state.
An annular flange (22) is projected outward from the open end of the knob cover (2).

In addition, in FIG. 4, the open end of one end (21b) of the protrusion cover portion (21) corresponding to the downstream end (41b) of the operation protrusion (41) of the operation knob (4) is shown in FIG. As shown, an engaging portion (23) that engages the back surface of one end (41b) of the operating protrusion (41) is provided.
Further, when the operation knob (4) is housed in the knob cover (2), the hole portion (20) is penetrated through the side surface of the protrusion cover portion (21) corresponding to the sealing hole (40).

To attach the gas plug cover (100) consisting of the main body cover (1) and knob cover (2) to the gas plug with the operation knob (4) attached to the gas plug main body (31), first. Both ends (41a) (41b) of the operation protrusion (41) are positioned on the pipe connection cylinders (31a) (31b) side, and the gas plug is opened.
In this state, the relief portions (10a) (10b) of the knob insertion holes (10) formed in the main body cover (1) are replaced with the both ends (41a) of the operation protrusions (41) of the operation knob (4). ) (41b), the operation knob (4) is inserted into the knob insertion hole (10). As a result, as shown in FIG. 2, the main body cover (1) has a pair of open portions (13a) (13b) that open in the pipe connection direction covering the upper part of the pipe connection cylinder portions (31a) (31b). The protective plate (12) is covered with the gas plug body (31) so as to cover substantially the entire area of both side surfaces of the gas plug body (31). At this time, the annular flange portion (11) of the main body cover (1) projects outward from the peripheral edge of the knob insertion hole (10) located at the position corresponding to the lower end of the circular body portion of the operation knob (4). It has become.
In this state, the main body cover (1) is merely covered with the gas plug main body (31) and is not fixed.

Next, the knob cover (2) is attached to the operation knob (4) of the gas plug in the state shown in FIG. For this purpose, as described above, the protrusion cover portion (21) of the knob cover (2) is aligned with the operation protrusion (41) of the operation knob (4), and the protrusion cover portion (21) is used for operation. At the same time as fitting the protrusion (41), the engaging portion (23) is engaged with the back surface of one end (41b) of the operating knob (4), and the operating knob (2) is inside the knob cover (2). 4) Store the whole in a nearly close contact state and in a retaining state.
Then, a bolt (50) is continuously inserted into the hole (20) of the protrusion cover (21) and the sealing hole (40) of the operation protrusion (41), and fixed with a nut (not shown). , The knob cover (2) is securely fixed to the operation knob (4) in a retaining state.

At this time, since the lower surface of the annular flange portion (22) of the knob cover (2) is set to abut on the upper surface of the annular flange portion (11) of the main body cover (1), the operation knob (4) is used. The annular flange portion (22) of the knob cover (2) fixed in the retaining state presses the annular flange portion (11) of the main body cover (1), and the gas plug main body (31) is covered. The main body cover (1) is securely attached to the gas plug main body (31) without being inadvertently lifted or displaced from the gas plug main body (31), and the gas plug is attached to the protective plate (12). Both sides of the main body (31) can be protected.

As shown in FIG. 4, the gas plug may be connected to a pipe between the upstream pipe (51) and the downstream pipe (52) arranged above and below, and in this case, the upstream pipe. The gas plug main body (31) is arranged in a posture in which the connection cylinder portion (31a) is located below and the pipe connection cylinder portion (31b) on the downstream side is located above. The operating protrusion (41) of the operation knob (4) attached to the gas plug main body (31) in this state has the upstream end (41a) at the bottom and the downstream end (41). 41b) is in the upper position. Therefore, at the same time as making one end (21b) of the protrusion cover portion (21) correspond to the end portion (41b) located on the upper side, the engaging portion (23) is attached to the end portion (41b) from above. By accommodating the operation protrusion (41) in the protrusion cover (21) while engaging the knob cover (2), the knob cover (2) can be temporarily fixed to the operation knob (4) in a fall-prevention state.
After that, by inserting a bolt (50) into the sealing hole (40) and the hole (20) and fixing it in a retaining state, the knob cover (2) is securely fixed to the operation knob (4). Can be attached.

Since the main body cover (1) and the knob cover (2) are configured separately, the main body cover (1) is attached to the gas plug main body (31) and the knob cover (2) is attached to the operation knob (4). The operation knob (4) can be rotated together with the knob cover (2) even in the moved state. Therefore, even when the gas plug cover (100) is attached to the gas plug, the gas plug can be opened and closed, and it is not necessary to remove the gas plug cover (100) every time the gas plug is operated. Since the knob cover (2) is one size larger than the operation knob (4), it can be rotated with less force than when the operation knob (4) is directly operated, which makes it easier to operate.
Further, the operation protrusion (41) of the operation knob (4) is set to be located along the gas passage hole (3a), and the protrusion cover portion (41) is set along the operation protrusion (41). Since the knob cover (2) is attached to the operation knob (4) so that 21) is located, the open / closed state of the gas plug can be checked even when the knob cover (2) is attached.

The main body cover (1) has a shape that opens in the pipe connection direction and one side following it, and the gas plug main body (31) is simply fitted by inserting the gas plug operation knob (4) into the knob insertion hole (10). Since it can be attached to the existing gas plug, it can be attached to the existing gas plug without any problem.
The main body cover (1) is not fixed to the gas plug main body (31), but is fixed to the operation knob (4) in a retaining state. By pressing the annular flange (11) of the main body cover (1), it can be attached to the gas plug main body (31) without accidentally shifting or coming off. The main body cover (1) can be easily attached to and removed from (31).

Since both the main body cover (1) and the knob cover (2) are made of heat-resistant resin, the entire gas plug can be removed from the radiant heat from the combustion equipment, hot water or high-temperature oil in the kitchen. The operation knob (4) can be reliably protected and the temperature rise of the gas plug main body (31) can be reliably prevented. Therefore, only the gas plug main body (31) does not repeatedly expand and contract due to heat, and the thread (3) is placed on the bottom side of the thread accommodating portion (30) whose diameter has been expanded by heat. It will not be stuck in the pushed state by the urging force of 5). Therefore, a smooth opening / closing operation of the gas plug is ensured by the operation knob (4), and the gas plug can be used for a long period of time even in a kitchen where the temperature changes drastically.

Further, in the above embodiment, a bolt (50) is adopted as a connecting member for continuously inserting the hole (20) of the knob cover (2) and the sealing hole (40) of the operation knob (4). However, instead of the bolt (50), it is also possible to use a pin, a binding band, a wire, or the like.

(100) ・ ・ ・ ・ ・ ・ Gas plug cover
(1) ・ ・ ・ ・ ・ ・ ・ ・ ・ Main body cover
(10) ・ ・ ・ ・ ・ ・ ・ ・ Knob insertion hole
(2) ・ ・ ・ ・ ・ ・ ・ ・ ・ Knob cover
(23) ・ ・ ・ ・ ・ ・ ・ ・ Engagement part
(3) ・ ・ ・ ・ ・ ・ ・ ・ ・
(30) ・ ・ ・ ・ ・ ・ ・ ・
(31) ・ ・ ・ ・ ・ ・ ・ ・ Gas plug body
(31a) (31b) ・ ・ ・ ・ Piping connection cylinder
(4) ・ ・ ・ ・ ・ ・ ・ ・ ・ Operation knob
(5) ・ ・ ・ ・ ・ ・ ・ ・ ・ Presser spring (energizing means)

Claims (4)

A gas plug body in which a gas flow path is formed from the pipe connection cylinder on the upstream side to the pipe connection cylinder on the downstream side via the pipe accommodating portion.
When the gas flow path is opened and closed by being rotatably accommodated in the storage unit,
A cylindrical portion connected to the open end side of the spiral housing portion in a state where the operation convex portion protruding from the center of the top surface of the spiral is fitted into the concave portion in the center of the back surface in a relative rotation blocking state. An operation knob that is mounted so as to prevent it from coming off and that can rotate the cylinder in the cylinder housing.
In a gas plug cover that is interposed between the operation knob and the screw and is attached to a gas stopper provided with an urging means that urges the screw to the bottom side of the screw accommodating portion.
A main body cover provided with a knob insertion hole through which the operation knob can be inserted and covering the outer surface of the gas plug main body from the operation knob side.
It is provided separately from the main body cover, has an outer surface shape that follows the top surface shape of the operation knob, and has an inner surface shape that can accommodate the operation knob in the same direction as the outer surface shape in a substantially close contact state, while being open. It consists of a knob cover and
Both the main body cover and the knob cover are made of heat-resistant resin.
The knob cover is provided with an engaging portion that can be engaged with the operation knob so as not to come off.
With the main body of the gas plug covered with the main body cover and the knob cover attached to the operation knob to engage the engaging portion, the open end of the knob cover hits the peripheral edge of the knob insertion hole of the main body cover. A gas tap cover that is set to touch. In the gas plug cover according to claim 1, an annular flange portion having a predetermined width is projected outward from the peripheral edge of the knob insertion hole of the main body cover and the open end of the knob cover, respectively.
A gas plug cover that is set so that the facing surfaces of each annular flange are in contact with each other with the main body cover attached to the gas plug main body and the knob cover attached to the operation knob. In the gas plug cover according to claim 1 or 2, the main body cover is a gas plug cover formed in a shape that continuously opens in the pipe connection direction of the gas plug main body and at least in another direction. In the gas plug cover according to any one of claims 1 to 3, a predetermined position of the knob cover corresponding to the sealing hole provided in the operation knob with the operation knob housed in the knob cover. Is provided with a hole in
The knob cover is a gas plug cover configured to be connected to an operation knob via a connecting member that can communicate with the hole portion and the sealing hole.

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