JP6270405B2 - Swivel adapter with gas stopper - Google Patents

Description

  The present invention relates to a universal adapter with a gas stopper having a rotatable universal joint and a gas stopper connected to a gas device. In particular, the present invention relates to a flexible adapter with a gas stopper in which the length of the rotatable universal joint is shortened as much as possible and the height of the adapter protruding from the gas device is lowered.

  In a gas stove or the like incorporated in a home system kitchen, it is preferable that the stove is incorporated in as small a space as possible. For that purpose, it is required that the stove itself is miniaturized and that the gas pipe connected to the stove does not protrude much from the stove. For that purpose, the height of the adapter with the gas stopper attached to the stove should be as low as possible.

Prior art documents concerning gas stoppers and adapters with gas stoppers are presented below.
JP 2005-195055 A JP 2008-291908 A JP 2009-103315 A JP 2011-117383 A

In order to reduce the height of the adapter with a gas stopper, the present inventors have developed the following universal adapter with a gas stopper.
A) Provide a female thread connection port on the equipment side and a male thread joint on the adapter side.
B) To make it easy to screw the male screw joint, the joint is a rotatable universal joint.
C) Provide a spanner hook on the outer periphery of the universal joint, and make the length as short as possible.
D) Make the diameter of the gas stopper as small as possible. Therefore, the resin handle for turning the gas stopper is made thin.

  However, when trying to reduce the height of the universal adapter with a gas stopper, it was found that the spanner hook and the gas stopper handle would be close to each other, and the spanner might touch the handle. An object of the present invention is to provide a small adapter with a gas stopper that does not cause a problem even in such a situation.

  The universal adapter with a gas plug of the present invention includes a gas inlet joint connecting portion, a gas outlet joint connecting portion, a gas passage connecting both portions, and a main body having a gas stopper containing portion for opening and closing the passage, and the gas stopper A gas plug comprising: a plug housed in the housing section; a gas plug having a handle for driving the plug body; and a pivotable joint pivotally attached to the gas outlet joint connection section. A swivel adapter, wherein the swivel joint is pivotally fitted to the outside of the gas outlet joint joint, and has a swirl hanger formed on the outer surface. A male screw part connected to the moving part is provided, and a brim part protruding outward is formed in a part of the spanner hanging part near the handle.

  When screwing the male threaded part of the swivel joint into the gas inlet (female thread) of a gas appliance, hang a spanner (including similar ones such as adjustable wrench) on the spanner part of the joint and turn the male thread part together with the swivel part. . At this time, in order to avoid the spanner from hitting the handle of the gas stopper, in the present invention, a flange portion protruding outward is formed at a portion of the spanner hook portion near the handle. Thereby, the contact between the spanner and the handle when the adapter is attached can be avoided, and the handle can be prevented from being damaged.

  In the universal adapter with a gas stopper of the present invention, various types of joints of the gas inlet side joint connecting portion can be used. A simple screw or a corrugated fitting may be used. The shape of the gas passage in the adapter body is not limited, and a 90-degree bend, a straight, or the like can be used. However, a 90 degree bend is suitable for connecting gas pipes in a narrow space. The type of the gas stopper, the presence or absence of pushing, or the angle of the passage opening / closing operation is not questioned. However, in order to reduce the diameter of the gas stopper, it is better not to push it.

  In the universal adapter with a gas stopper of the present invention, it is preferable that the brim portion has a substantially triangular cross section having a tapered surface rising from the spanner hanging portion side. In this case, it is also preferable that the tapered surface is a flat surface, a cylindrical surface is present on the top of the flange portion, and an inclination angle of the tapered surface is 30 to 60 degrees. Such a brim shape has the advantage that the spanner can be prevented from slipping, the width of the brim portion is narrow, and the machining is easy (eg, the occurrence of burrs during machining is small).

  According to the present invention, it is possible to avoid contact between the spanner and the handle when the adapter is attached, and to prevent the handle from being damaged. As a result, the installation space can be reduced, and a highly durable adapter with a gas stopper can be provided.

  Hereinafter, embodiments of the universal adapter with a gas stopper of the present invention will be described with reference to the drawings.

It is a front view of the universal adapter with a gas stopper of the embodiment of the present invention (a figure showing a 90-degree pipe bend). FIG. 3 is a plan view of the universal adapter with a gas stopper of FIG. 1 (a view along the rotation surface of the gas stopper handle). It is front sectional drawing which shows the internal structure of the universal adapter with a gas stopper of FIG. It is a figure which expands and shows the rotatable joint in embodiment of FIG. (A) is a perspective view, (B) is a side view, and (C) is an enlarged side cross-sectional view showing a brim portion. It is a perspective view which shows the use condition of the universal adapter with a gas stopper of FIG.

DESCRIPTION OF SYMBOLS 10 ... Main body, 11 ... Handle engaging part (annular engaging part), 12 ... Gas passage,
13: Gas outlet side joint connection part,
14 ... Gas stopper (plug body) accommodating part, 14b ... Conical inner surface (gas seal sliding surface)
15b ... gas passage,
17 ... Gas inlet side joint connection part 21 ... Rotary joint, 21c ... Male thread part, 21e ... Spanner hanging part (hexagonal surface),
21f ... rotating part, 21g ... collar part, 21m ... male screw part inner hole, 21r ... rotating part inner surface,
23 ... Airtight O-ring, 25 ... Stop ring, 27 ... Watertight O-ring,
30 ... Gas plug, 31 ... Plug drive handle, 31b ... Plug connection part,
31c ... Top plate portion, 31d ... Outer peripheral portion 33 ... Plug body pressing spring, 35 ... Plug body, 35b ... Through hole, 35d ... Outer peripheral surface of plug body,
50 ... Flexible pipe joint (gas inlet side joint), 51 ... Spring, 53 ... Packing,
55 ... Retainer, 55b ... Claw, 57 ... Retainer presser,
101 ... Tapered surface, 103 ... Cylindrical surface, 105 ... Back

As shown in FIGS. 1 and 3, the universal adapter 1 with a gas stopper according to the embodiment of the present invention includes the following main parts.
The main body 10 is a member made of a substantially L-shaped brass or the like. A gas inlet side joint connecting portion 17 is formed in the lower part of the figure, and a gas outlet side joint connecting part 13 is formed on the left side of the figure. In the upper part of the figure, an annular engagement portion 11 with which the gas plug handle 31 is engaged is formed. Inside the main body 10, gas passages 15 b and 12 that connect the joint connecting portions 17 and 13 are formed. At the junction of the L-shaped gas passages 15b and 12, a housing portion 14 for housing the plug body 35 of the gas plug 30 that opens and closes the passage is provided.

  As shown in the upper part of FIG. 3, the gas plug 30 includes a plug body 35, a plug body driving handle 31, a plug body pressing spring 33, and the like. An outer peripheral surface (conical surface) 35d of the plug body 35 forms a gas seal sliding surface with the conical inner surface 14b of the main body. The plug body 35 is formed with a through hole 35b that connects the gas passages 15b and 12 when the gas passage is opened. The handle 31 is a resin molded product, and includes a connection portion 31b to the plug body 35, a top plate portion 31c extending on the upper surface thereof, an outer peripheral portion 31d hanging from the outer periphery of the top plate portion, and the like. As this gas stopper, various types of gas stoppers such as those described in the patent documents listed in the description of the background art can be used. Incidentally, the thickness of the outer peripheral portion 31d of the gas plug handle 31 is as thin as 1 mm at a nominal diameter 15A (outer diameter 30 mm) and 1 mm at a nominal diameter 20A (outer diameter 35 mm).

  Flexible pipe joint 50; In this example, a flexible pipe (corrugated pipe) joint 50 is provided as a gas inlet side joint. The joint 50 includes a retainer presser 57, a retainer 55, a packing 53, a spring 51, and the like as seen from the bottom to the top of the figure. The claw 55b on the inner periphery of the retainer 55 is inserted into a corrugated trough on the outer surface of a flexible pipe (corrugated pipe, not shown) to be inserted, and the flexible pipe is fixed in the joint. For details of this flexible pipe joint, refer to JP 2011-52762 A and International Publication 2010/131609.

  A rotatable joint 21; the joint 21 is rotatably fitted to the outside of the gas outlet side joint connecting portion 13 of the main body 10 and has a wrench portion (hexagonal surface) 21e formed on the outer surface. 21f and a male screw portion 21c connected to the rotating portion. The male screw portion 21c has a pipe male screw cut on its outer surface, and is screwed into a gas receiving port (not shown) of a gas appliance (such as a stove). At that time, the inner hole 21m of the male screw portion 21c communicates with a gas passage in the gas appliance.

  The rotating part 21f is a cylindrical part having a larger diameter than the male screw part 21c. The outer surface 21e is a hexagonal cylinder and is a spanner hanging portion 21e. The inner surface 21r of the rotating portion 21f is cylindrical, and is rotatably fitted to the outer surface of the gas outlet side joint connecting portion 13 (also cylindrical) of the main body 10. Between the inner surface 21r of the rotating portion and the outer surface of the gas outlet side joint connecting portion 13 (also cylindrical), a watertight O-ring 27 and a stop ring 25 are sequentially arranged from the front side (right side in the figure) to the back side. The airtight O-ring 23 is engaged. The watertight O-ring 27 is for preventing moisture from entering the gas passage from the outside. The stop ring 25 is used for rotatably locking the rotatable joint 21 to the gas outlet side joint connecting portion 13. The airtight O-ring 23 is for preventing gas from leaking out of the adapter 1.

  A flange portion 21g projecting outward is formed at an end portion of the spanner hook portion 21e of the rotatable universal joint 21 near the gas plug 30 (also a portion near the gas plug handle 31).

  As easily shown in FIG. 4C, the brim portion 21g has a substantially triangular cross section having a tapered surface 101 rising from the side of the spanner hooking portion 21e. The taper angle θ is 45 degrees in this case, but a range of 30-60 degrees is considered preferable. The tapered surface 101 is a flat surface (not a conical surface), and is smoothly connected to the spanner hanging portion 21e (a flat surface). Since both the taper surface 101 and the spanner hanging portion 21e are flat surfaces, their intersecting line 106 is linear. Therefore, the spanner can be smoothly put in and out in parallel with the intersection line 106. The back surface 105 of the collar portion 21g is a plane perpendicular to the axial direction.

  A cylindrical surface 103 exists on the top of the flange portion 21g to avoid the presence of a sharp edge. The cylindrical surface 103 is the same surface as the circumferential surface 91 for chamfering between the hexagonal surfaces of the spanner hanging portion 21e. According to the shape of the flange portion shown in FIG. 4 and described with reference thereto, the spanner can be prevented from slipping, the width of the flange portion can be narrow, and processing is easy (variation during processing). There are advantages such as low occurrence). The height H of the flange portion 21g is, for example, 1.5 mm at a nominal diameter of 15A and 1.5 mm at a nominal diameter of 20A.

  As shown in FIG. 2, when the universal adapter 1 is viewed in the direction of the rotation axis of the gas plug handle 31, the back surface 105 of the flange portion 21g and the gas plug handle 31 are very close to each other. The distance X2 between the back surface 105 of the collar portion 21g and the gas plug handle 31 is desirably smaller than the height H (see FIG. 4) of the collar portion 21g.

  FIG. 5 is a view showing a state where the flexible adapter 1 with a gas stopper of FIG. 1 is screwed into a gas receiving port of a household stove K using a spanner S. FIG. As can be seen from the figure, the spanner S and the handle 31 of the gas stopper are in a very close positional relationship. However, since the flange portion 21g of the spanner hanger prevents the spanner S from slipping laterally, the spanner S can be prevented from coming into contact with the gas plug handle and damaging the handle. Further, as can be seen from FIG. 5, the universal adapter 1 with a gas stopper only protrudes from the stove K to a height that can be said to be a minimum. Therefore, the installation space for the stove K is minimized.

  With reference to FIG. 2 again, the height X at which the flexible adapter 1 with a gas stopper protrudes from the stove will be described. As described above, the male screw portion 21c is screwed into the gas receiving port (female screw) of the household stove. Accordingly, the height X is substantially equal to the axial length X1 of the rotating portion 21f, the distance X2 between the back surface 105 of the flange portion 21g and the gas stopper handle 31, and the diameter X3 of the gas stopper handle 31. Become sum. The present inventors have succeeded in reducing the distance X2 between the back surface 105 of the collar portion 21g and the gas stopper handle 31 and reducing the height X while shortening the axial length X1 of the rotating portion 21f. Has been realized.

Claims (5)

A main body having a gas inlet side joint connection part, a gas outlet side joint connection part, a gas passage connecting the two parts, and a gas stopper housing part that opens and closes the passage;
A plug accommodated in the gas stopper accommodating portion, and a gas stopper having a handle for driving the stopper;
A rotatable joint connected to the gas equipment, which is rotatably attached to the gas outlet side joint connection part,
A gas adapter with a gas stopper, comprising:
The rotatable joint is
A turning part having a spanner hanging part formed on the outer surface, and a fitting part rotatably on the outside of the gas outlet side joint connecting part, and
A male screw connected to the rotating part,
In the plan view along the rotation surface of the handle, the spanner hanging portion is disposed close to the handle in a state where the distance between the back surface on the main body side and the outer peripheral portion of the handle is small.
A flange portion that protrudes outward is formed in a portion of the spanner hanging portion that is closer to the handle , and the flange portion hangs the spanner hanging portion when the adapter is attached to the gas device and the handle. A flexible adapter with a gas stopper, characterized in that it avoids contact with the gas stopper. The universal adapter with a gas plug according to claim 1, wherein an outer peripheral portion of the handle of the gas plug is made of a thin resin. The universal adapter with a gas stopper according to claim 1 or 2 , wherein the collar portion has a substantially triangular cross section having a tapered surface rising from the spanner hanging portion side. The tapered surface is a plane;
There is a cylindrical surface on the top of the flange,
The universal adapter with a gas stopper according to claim 3 , wherein an inclination angle of the tapered surface is 30 to 60 degrees. The rotatable universal joint is rotated to the gas outlet joint connecting portion between the inner surface of the rotating portion having the spanner hanging portion formed on the outer surface and the outer surface of the gas outlet joint connecting portion of the main body. The free adapter with a gas stopper according to any one of claims 1 to 4, wherein a stop ring that is movably locked and an airtight O-ring that prevents external leakage of gas are engaged.

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