JP6715022B2 - Gas inlet pipe closure structure - Google Patents

Description

The present invention relates to a closure structure for closing a gas introduction pipe provided in a gas appliance such as a built-in stove with a gas plug.

In a gas appliance such as a built-in stove, the gas introduction pipe is closed at the time of shipment after manufacturing so that foreign matter does not enter the gas introduction pipe connecting the gas pipe. As this capping structure, for example, as disclosed in Patent Document 1, there is a structure in which a valve body is provided in the gas introduction pipe to be closed with a spring, or a gas plug is inserted into the gas introduction pipe to be closed. Are known.

JP 2004-116653 A

In the above conventional plugging structure, in the structure of Patent Document 1, in addition to the valve body in the gas introduction pipe, it is necessary to provide a valve push rod for pushing the valve body to open the valve body on the side of the gas pipe connected to the gas introduction pipe. Will increase the cost. Therefore, a closure structure is often used in which the gas plug is simply closed and the gas plug is removed at the time of use, but when removing the gas plug, it is necessary to pull it out using a dedicated tool, and the workability was poor. ..

Therefore, an object of the present invention is to provide a capping structure for a gas introduction pipe that can easily remove the gas plug without using a dedicated tool.

In order to achieve the above object, the invention according to claim 1 is a gas introduction pipe in which a gas passage to which a gas pipe is connected is installed, and a gas to be inserted into the gas passage before the gas pipe is connected. A capping structure of a gas introduction pipe including a stopper,
The insertion position of the gas plug into the gas passage is defined such that the end surface of the gas stopper main body is deeper than the opening of the gas passage, and the stopper main body projects toward the opening of the gas passage. A strip-shaped pressing plate is formed on the gas introducing pipe, and the strip-shaped pressing plate is provided in the gas introduction pipe. The portion to be penetrated protrudes into the gas passage in the screwed state of the pressing plate and abuts or comes close to the main body of the gas stopper,
When the screw that fixes the pressing plate is removed, the penetrated part can move axially along the extraction rod, and the presser plate has both sides of the penetrated part separated from the gas introduction pipe and between the gas introduction pipe. It is characterized in that it can be pulled out to a position where a space is formed.
According to a second aspect of the present invention, in the structure of the first aspect, the pressing plate is attachable to and detachable from the pull-out rod.

According to the first aspect of the present invention, the gas stopper can be easily pulled out by using the holding plate without using a dedicated tool, only by removing the screw for fixing the holding plate.
According to the invention described in claim 2, in addition to the effect of claim 1, since the pressing plate can be attached and detached from the drawing rod, the specifications can be individually changed according to the form of the gas introduction pipe. , Versatility is increased. Further, even if one of the gas stopper and the pressing plate is damaged, the other one can be replaced.

It is explanatory drawing of a gas introduction part (closed state). It is an exploded perspective view of a gas introduction part. It is explanatory drawing of a gas introduction part which shows the withdrawal state of a gas plug.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an explanatory view showing an example of a gas introduction section provided at the bottom of the built-in stove. In the gas introduction part 1, 2 is a pipe body having branch pipes 3 and 4 which are branched in two directions, and one branch pipe 3 is connected to a gas pipe 5 which is connected to a stove or a grill side. A gas passage 6 communicating with the branch pipe 3 is formed in the other branch pipe 4 that becomes A flange 7 is formed on the projecting end of the branch pipe 4, and a bulging portion 8 centering on the gas passage 6 is formed on the outer surface of the flange 7, and the flange 7 is fitted to the bulging portion 8. The branch pipe 4 is fixed to an unillustrated body of the built-in stove by a mounting plate 9 which is screwed to.

At the opening of the gas passage 6, a large-diameter female screw portion 10 for screwing the gas pipe is formed, and the gas passage 11 is inserted from the female screw portion 10 into the gas passage 6 by the gas plug 11. Is blocked. The gas plug 11 has a brass plug body 12 which is inserted into the gas passage 6 by covering two O-rings 13 and 13 on the outer circumference, and an end portion of the plug body 12 toward the opening 6 a of the gas passage 6. A pull-out rod 14 that projects coaxially is provided, and a flange 15 that engages with the bottom portion of the female screw portion 10 and defines the insertion position is provided around the outer periphery of the plug body 12. The protruding end of the pull-out rod 14 is a head 16 having a larger diameter than the root side.

Reference numeral 17 denotes a pressing plate for the gas plug 11. The pressing plate 17 is a strip-shaped metal plate formed by bending a penetrating portion 18 having a convex shape at the center in the longitudinal direction. As shown, an L-shaped slit 19 is formed from the center of the bottom of the penetrated portion 18 to one side surface. The slit 19 has a width smaller than the diameter of the head 16 of the withdrawal rod 14 of the gas plug 11 and is formed so that the withdrawal rod 14 can penetrate therethrough. A wide portion 20 is formed to allow the head 16 to pass therethrough. That is, by aligning the position of the head portion 16 with the wide portion 20 in the axial direction of the pulling rod 14, the pulling rod 14 can be put in and taken out from the slit 19, and the pulling rod 14 can be inserted into the slit 19 on the bottom side of the penetrated portion 18. In the state of being located at the end, the pressing plate 17 is coupled to the pull-out rod 14 so as to be movable in the axial direction while being retained by the head 16. Through holes 21 and 21 for screwing are formed at both ends of the pressing plate 17 in the longitudinal direction.

In the closure structure of the branch pipe 4 configured as described above, at the time of factory shipment, as shown in FIG. 1, the gas stopper 11 in which the pressing plate 17 is passed through the extraction rod 14 and the flange 15 is the female screw portion 10. It is pushed into the gas passage 6 until it comes into contact with the bottom portion, and in this state, both ends of the pressing plate 17 are screwed to the bulging portion 8 with the screws 22 and 22 through the through holes 21 and 21. Then, the penetrated portion 18 of the pressing plate 17 fixed to the bulging portion 8 projects into the female screw portion 10 and approaches or abuts on the end surface of the stopper body 12 of the gas stopper 11. Therefore, the gas plug 11 is prevented from coming off by the pressing plate 17, and the branch pipe 4 is closed. In this state, the pull-out rod 14 penetrates the penetrated portion 18 and projects to the outside of the pressing plate 17, but does not project to the outside of the screws 22 and 22 and therefore does not interfere.

When the built-in stove is installed on the kitchen counter, the screws 22, 22 are removed so that the pressing plate 17 can move in the axial direction with respect to the pull-out rod 14. Therefore, if the pressing plate 17 is pulled out to the outside, it can be separated from the branch pipe 4 until the head portion 16 of the extraction rod 14 comes into contact with the bottom of the penetrated portion 18, as shown in FIG. By pulling both ends of the pressing plate 17 in the direction of the arrow as it is, the stopper body 12 can be pulled out from the gas passage 6 via the pulling rod 14.

As described above, according to the plugging structure of the branch pipe 4 of the above-described embodiment, the insertion position of the gas plug 11 into the gas passage 6 is such that the end surface of the plug body 12 is deeper than the opening 6 a of the gas passage 6. The pull-out rod 14 protruding toward the opening 6a is formed in the plug body 12, and the pull-out rod 14 penetrates the branch pipe 4 in the axial direction so that the pull-out rod 14 can move relatively and in a retaining state. The pressing plate 17 having the to-be-penetrated portion 18 is screwed, and the to-be-penetrated portion 18 projects into the gas passage 6 and abuts or comes close to the plug body 12 when the pressing plate 17 is screwed.
Therefore, the gas stopper 12 can be easily pulled out by using the pressing plate 17 without using a dedicated tool only by removing the screw 22 that fixes the pressing plate 17 with a screw.

In particular, here, since the pressing plate 17 can be attached to and detached from the pull-out rod 14, the specifications can be individually changed according to the form of the branch pipe 4, and versatility is enhanced. Further, even if one of the gas stopper 12 and the pressing plate 17 is damaged, the other one can be replaced.

In addition, in the above-described embodiment, the penetrating portion of the pressing plate has a convex shape, but it may have a trapezoidal shape or an arc shape. The shape of the pressing plate is not limited to the band plate shape, and it is possible to increase the screwing positions instead of the square shape or the disk shape.
Further, the slit provided in the pressing plate may be provided so as to be opened only at the bottom portion so that the pulling-out rod can be easily attached and detached, or conversely, the pressing plate may be connected to the pulling-out rod so as not to come off.
The gas introduction pipe is not limited to the branch pipe of the above-described embodiment, and can be changed as appropriate.The gas appliance is not limited to the built-in stove, the cooking appliance such as the table stove and the rice cooker, the water heater such as the water heater, and the gas stove. The present invention is also applicable to heating appliances such as a fan heater and the like.

1... Gas introduction part, 2... Tube body, 3, 4... Branch pipe, 6... Gas passage, 6a... Opening, 10... Female screw part, 11... Gas plug, 12... Plug body , 13・・O-ring, 14・・Extraction bar, 15・・Flange, 16・・Head, 17・・Holding plate, 18・・Penetrated part, 19・・Slit, 20・・Wide part, 21・・Through hole, 22・・Screw.

Claims (2)

A capping structure for a gas introduction pipe, comprising a gas introduction pipe having a gas passage internally connected to the gas pipe and a gas stopper inserted into the gas passage before the gas pipe is connected. ,
The insertion position of the gas plug into the gas passage is defined such that the end surface of the plug main body of the gas plug is on the back side of the opening of the gas passage. A pull-out bar that protrudes toward the opening of
A band-shaped pressing plate having a penetrated portion at the center in the longitudinal direction, through which the extraction rod is relatively movable in the axial direction and penetrates in a retaining state, is screwed to the gas introduction pipe, and the penetrated portion is provided. Is projecting into the gas passage in a screwed state of the pressing plate and abutting or close to the plug body of the gas plug,
When the screw for fixing the pressing plate is removed, the penetrated portion becomes movable along the extraction rod in the axial direction, and the pressing plate has both sides of the penetrated portion separated from the gas introduction pipe. A capping structure for a gas introduction pipe, which can be pulled out to a position where a space is formed between the gas introduction pipe and the gas introduction pipe. The capping structure for the gas introduction pipe according to claim 1, wherein the pressing plate is detachable from the extraction rod.

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