Buried-type gas cock

Abstract

To improve a workability of attachment of a buried-type gas cock 1 onto a wall W.SOLUTION: A casing 20 of a buried-type gas cock 1 includes: a body part 20B for holding a gas cock body 10; and a flange part 20F which is provided on one end of the body part and on which an insertion hole 28 is formed. The body part 20B is inserted into a through hole Wa of a wall W to bring the flange part 20F into contact with an inner face of the wall W. A bolt 30 is inserted into the through hole 28 of the flange part 20F and can swing to come closer to or moves away from the body part 20B. A pinching plate 40 has a panel surface screwed by a bolt 30 directed toward the flange part 20F. In a state where the bolt 30 is rotated in a fastening direction while a corotation of the pinching plate 40 is prevented, the pinching plate 40 and the flange part 20F pinch the wall W to fix the casing 20 on the wall W. A shaft part of the bolt 30 is longer than the casing 20. A relief hole 25 through which the shaft part of the bolt 30 can pass is formed in a peripheral wall 21 of the casing 20, and communicate with a depth-side opening part 23.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a buried gas valve that is attached to a through-hole in an interior material facing an indoor space. [Background technology]

[0002] Known examples of buried gas valves that are attached to through-holes formed in interior materials facing the indoor space, such as walls, floors, and sink tops, are described in the following Patent Documents 1 and 2. Buried gas valves 1A and 1B of Patent Documents 1 and 2, shown in Figures 14 and 15, respectively, both have a gas valve body 2, a casing 3, multiple bolts 4, and multiple clamping plates 5.

[0003] In buried gas valves 1A, 1B, casing 3 has a cylindrical body 3a that holds gas valve main body 2 inside and a flange 3b provided at one end of body 3a, with body 3a inserted into through-hole 6a in interior material 6 and flange 3b abutting against the indoor surface of interior material 6. Multiple bolts 4 can swing toward and away from body 3a with their shanks passing through flange 3b. A clamping plate 5 is screwed onto the shank of each bolt 4, with its plate surface facing flange 3b.

[0004] To attach the buried gas valve 1A of Patent Document 1 to the interior material 6, as shown by the phantom lines in Fig. 14(B), the bolt 4 is turned to orient the clamping plate 5 on the outside of the other end of the body 3a inward, and then the bolt 4 is tilted radially inward of the body 3a as shown in Fig. 14(C), and in this state the body 3a of the casing 3 is inserted into the through-hole 6a. After that, the tilt is returned to its original position, and as shown by the solid lines in Fig. 14(B), the bolt 4 is turned or a finger is inserted into the body 3a to orient the clamping plate 5 outward.

[0005] Next, when the bolt 4 is pulled slightly toward the interior of the room and turned in the tightening direction, the clamping plate 5 comes into contact with the body portion 3a and does not rotate together with the bolt 4. In this state, as shown in Figure 14(D), when the bolt 4 is tightened, the clamping plate 5 moves toward the flange portion 3b and comes into contact with the back surface of the interior material 6. As a result, the clamping plate 5 and the flange portion 3b clamp the interior material 6, the casing 3 is fixed to the interior material 6, and the buried gas valve 1A is installed.

[0006] In the buried gas valve 1B of Patent Document 2, as shown in FIG. 15(A), an inverted T-shaped escape hole 7 is formed in the peripheral wall of the body 3a of the casing 3, through which the shank of the bolt 4 and the clamping plate 5 pass. To attach the buried gas valve 1B to the interior material 6, as shown by the imaginary lines in Figure 15(B), the bolt 4 is tilted radially inward of the body 3a, the shank of the bolt 4 and the clamping plate 5 are passed through the relief hole 7, and the clamping plate 5 is housed inside the body 3a. In this state, the body 3a of the casing 3 is inserted into the through-hole 6a, and then the clamping plate 5 is pushed out from inside the body 3a to the outside.

[0007] Next, pull the bolt 4 slightly toward the interior and turn it in the tightening direction, bringing the clamping plate 5 into contact with the body 3a and preventing it from rotating together with the bolt 4. In this state, tighten the bolt 4, move the clamping plate 5 toward the flange 3b, and bring it into contact with the back surface of the interior material 6, as shown by the solid line in Figure 15(B). This completes the installation of the buried gas valve 1B in the interior material 6. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Publication number 2-40356 [Patent Document 2] Japanese Utility Model Application Publication No. 5-50265 Summary of the Invention [Problem to be solved by the invention]

[0009] In the buried gas valve 1A of Patent Document 1, when the body 3a of the casing 3 is inserted into the through-hole 6a of the interior material 6, the clamping plate 5 can be moved in and out radially of the body 3a in the large space outside the other end of the body 3a. However, the clamping plate 5 at the tip of the bolt 4 must be turned from facing inward to facing outward, which makes it difficult to grasp the position of the clamping plate 5 and requires inserting one's fingers deep into the body 3a, making the installation process difficult.

[0010] In the buried gas valve 1B of Patent Document 2, when the body 3a of the casing 3 is inserted into the through-hole 6a of the interior material 6, the bolt 4 and the clamping plate 5 are inserted and removed inside the body 3a. This insertion and removal must be done through the narrow inverted T-shaped escape hole 7, and the clamping plate 5 must be accommodated and pushed out within the narrow space of the body 3a that holds the gas valve main body 2, making the installation work not easy.

[0011] Furthermore, in the buried gas valves 1A and 1B of Patent Documents 1 and 2, the inside and outside of the casing 3 are connected by a gap between the rear opening of the body 3a of the casing 3 and the gas valve main body 2, and in the buried gas valve 1B, the inside and outside of the casing 3 are further connected by a relief hole 7. This allows outside air to enter the indoor space, reducing the efficiency of indoor air conditioning. [Means for solving the problem]

[0012] The present invention has been made to solve at least one of the above problems. A buried gas valve according to one aspect of the present invention is a buried gas valve that is attached to a through-hole in an interior material facing an indoor space, and The gas valve body, a casing having a cylindrical body that holds the gas valve body therein and a flange that is provided at one end of the body and has an insertion hole formed therein, the body being inserted into the through-hole of the interior material so that the flange comes into contact with the interior surface of the interior material; a bolt having a shaft portion inserted into an insertion hole of the flange portion and capable of swinging toward and away from the body portion; a clamping plate screwed to the shank of the bolt with its plate surface facing the flange portion, When the bolt is turned in the tightening direction while the clamping plate is prevented from rotating together with the bolt by the body portion, the clamping plate and the flange portion clamp the interior material, thereby fixing the casing to the interior material, The shank of the bolt is formed to be longer than the axial length of the casing, The casing has a peripheral wall of the body portion formed with an escape hole through which the shank of the bolt can pass, the escape hole being connected to an opening on the other end side of the body portion.

[0013] In the above configuration, to insert the casing body into the through-hole of the interior material, the bolt, whose shank is inserted through the insertion hole in the casing flange, and the clamping plate threaded onto the tip of the bolt shank are tilted radially inward of the body. The bolt shank is longer than the casing, and the relief hole in the peripheral wall of the body is connected to the opening on the other end of the body. Therefore, the shank can be inserted from the relief hole to the opening on the other end, and the clamping plate at the tip of the shank can be inserted to a position outside the other end of the body that corresponds to the radially inner side of the body. After the casing body is inserted into the through-hole in this state, the tilted bolt and clamping plate are returned to their original position, positioned radially outward of the body. Then, when the clamping plate abuts against the body so that it does not rotate together with the bolt and the bolt is tightened, the clamping plate moves toward the flange and abuts against the back surface of the interior material. This clamps the interior material between the clamping plate and the flange, securing the casing to the interior material and attaching the buried gas valve to the interior material.

[0014] According to the above configuration, when the bolt and clamping plate are tilted radially inward of the barrel, the bolt shank fits into the relief hole in the barrel and the opening at the other end, allowing the bolt and clamping plate to be tilted significantly, and the clamping plate can be placed further inward in the radial direction of the barrel. Therefore, the clamping plate can be inserted and removed in the large space outside the other end of the barrel without having to change the orientation of the clamping plate, as viewed from the axial direction of the bolt, between facing inward and outward by rotating the bolt, for example. This improves the ease of installing the buried gas valve in the interior material.

[0015] Preferably, the device further includes an auxiliary member attached to the inside of the body portion through an opening at one end side of the body portion of the casing, The auxiliary member has a co-rotation preventing portion that protrudes from an opening on the other end side of the body portion and is located close to the tip of the shank of the bolt.

[0016] According to the above configuration, after inserting the casing body into the through-hole of the interior material, the bolt and clamping plate are positioned radially outward of the body, and an auxiliary member is attached inside the body. The co-rotation preventing portion protrudes from the opening at the other end of the body and approaches the tip of the bolt shank. Therefore, when the bolt is turned, the side of the clamping plate, which is threaded onto the tip of the shank, abuts against the co-rotation preventing portion. When the bolt is turned in the tightening direction, the clamping plate, prevented from rotating with the bolt by abutting against the co-rotation preventing portion, moves toward the flange of the casing. As the bolt continues to turn, the clamping plate abuts against the back surface of the interior material through the body, clamping the interior material together with the flange on the interior side. Therefore, to prevent the bolt and clamping plate from rotating together, it is possible to prevent the clamping plate from rotating simply by turning the bolt, without having to pull the bolt slightly toward the interior and then turn it to abut the clamping plate against the barrel. This prevents the clamping plate from being unable to move toward the flange due to the bolt rotating together. This further improves the ease of installing the buried gas valve in the interior material.

[0017] Preferably, the auxiliary member attached to the body of the casing has a side plate portion at one end of the body and a bottom plate portion at the other end, and a through-hole is formed in the bottom plate portion to allow the gas valve body held in the body portion to pass through, and the co-rotation prevention portion is provided on the surface opposite to the side plate portion, The side plate portion has a shape that covers the relief hole of the body portion, and the bottom plate portion has a shape that covers the opening on the other end side of the body portion. According to the above configuration, it is possible to reduce the amount of outside air entering the room through the escape hole in the body of the casing and the opening on the other end side.

[0018] Preferably, the side plate portion of the auxiliary member has a locking portion that is locked to an end portion of the relief hole of the body portion on one end side of the body portion. According to the above configuration, the auxiliary member can be fixed to the casing and prevented from moving toward the interior of the room. As a result, for example, when attaching a decorative plate to the casing from the interior side, it is possible to avoid inconveniences such as interference with the attachment of the decorative plate or the opening and closing operation of the decorative plate due to the auxiliary member moving toward the interior side.

[0019] Preferably, the auxiliary member has a cylindrical shape with a bottom and is shaped to fit inside the peripheral wall of the body portion. According to the above configuration, the gap between the peripheral wall of the body and the auxiliary member can be reduced, which in turn reduces the amount of outside air entering the room.

[0020] A buried gas valve according to another aspect of the present invention is a buried gas valve that is installed in a through-hole of an interior material facing an indoor space, The gas valve body, a casing having a cylindrical body that holds the gas valve body therein and a flange that is provided at one end of the body and has an insertion hole formed therein, the body being inserted into the through-hole of the interior material so that the flange comes into contact with the interior surface of the interior material; a bolt having a shaft portion inserted into an insertion hole of the flange portion and capable of swinging toward and away from the body portion; a clamping plate that is screwed onto the shank of the bolt with its plate surface facing the flange portion and clamps the interior material together with the flange portion, thereby fixing the casing to the interior material, A relief hole through which at least the shank of the bolt can pass is formed in the peripheral wall of the body of the casing, and an auxiliary member is attached to the inside of the body from an opening on one end side of the body, The auxiliary member is a cylindrical member with a bottom that fits inside the peripheral wall of the body portion, and has a side plate portion at one end of the body portion and a bottom plate portion at the other end, and a through hole is formed in the bottom plate portion to allow the gas valve body held in the body portion to pass through. the side plate portion has a shape that covers the relief hole of the body portion, The bottom plate portion is characterized by having a shape that covers the opening at the other end of the body portion. According to the above configuration, by reducing the gap between the peripheral wall of the body and the auxiliary member and blocking the escape holes and openings in the body of the casing, it is possible to reduce the amount of outside air entering the room. [Effects of the Invention]

[0021] According to the present invention, it is possible to achieve at least one of improving the workability of installing a buried gas valve in an interior material and reducing the amount of outside air entering the room. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a right side view showing a state in which a buried gas valve according to one embodiment of the present invention is attached to a wall (interior material), and shows the wall in cross section. FIG. [Figure 2] FIG. 2 is an exploded perspective view of the buried gas valve. [Figure 3] FIG. 2 is a perspective view of the buried gas valve, showing the gas valve body, casing, bolt, and clamping plate assembled together. [Figure 4] FIG. 4 is a front view of the buried gas valve in the state shown in FIG. 3. [Figure 5] FIG. 4 is a right side view of the buried gas valve in the state shown in FIG. 3. [Figure 6] 6A is a perspective view of the buried gas valve, showing the state in which the gas valve body, casing, bolt, clamping plate, and auxiliary member are assembled. (B) is an enlarged view of the circle (B) in FIG. 6A. (C) is a cross-sectional view taken along line CC in FIG. 6B. [Figure 7] FIG. 7 is a front view of the buried gas valve in the state of FIG. 6(A). [Figure 8] FIG. 7 is a right side view of the buried gas valve in the state of FIG. 6(A). [Figure 9] 9A is a front view of the casing, (B) is a view taken along the arrow B in FIG. 9A, and (C) is a view taken along the arrow C in FIG. 9A. [Figure 10] 10(A) is a front view of the auxiliary member, (B) is a view taken along the arrow B in FIG. 10(A), and (C) is a view taken along the arrow C in FIG. [Figure 11] These are plan views showing the process of installing the same buried gas valve to a wall, where (A) shows the state in which the body of the casing is facing the through-hole in the wall without the auxiliary member, and (B) shows the state in which the bolt and clamping plate are tilted and the casing is inserted into the through-hole. [Figure 12] These are plan views showing the same installation process, where (A) shows the state in which the inclination of the bolt and clamping plate is returned to its original position after the casing is inserted into the through hole, and (B) shows the state in which the co-rotation prevention portion protruding from the back side of the casing to which the auxiliary member is attached prevents the bolt and clamping plate from rotating together. [Figure 13] This is a plan view showing the same installation process, corresponding to the plan view of Figure 1, and shows the state in which the bolts are tightened to clamp the wall between the clamping plate and flange portion, and the buried gas valve is installed on the wall. [Figure 14] These are diagrams showing a conventional buried gas valve, where (A) is a perspective view of the casing, (B) is a plan view of the casing, (C) is a front view of the casing in the process of being attached to the interior material, and (D) is a front view of the casing after installation is complete. [Figure 15]10A and 10B are diagrams showing another conventional buried gas valve, in which (A) is a front view and (B) is a side view showing the casing inserted into the through-hole of the interior material, with a portion shown in cross section. DETAILED DESCRIPTION OF THE INVENTION

[0023] An embodiment of the present invention will be described below with reference to Figures 1 to 13. In this embodiment, the present invention is applied to a buried gas valve that is attached to a wall as an interior material facing an indoor space.

[0024] The buried gas valve 1 shown attached to a wall W in Figures 1 and 13 may have a gas valve body 10, a casing 20, bolts 30, a clamping plate 40, and an auxiliary member 50 as shown in Figure 2. A decorative plate 60 may be attached to the casing 20 of the buried gas valve 1. As shown in Figure 11(A) , a through hole Wa is formed in the wall W, and in this embodiment, the through hole Wa is circular when viewed from the axial direction. The through hole Wa may also be formed in a rectangular or other shape.

[0025] As shown in FIG. 2, the gas valve body 10 is a quick-connect type gas valve and has, from upstream to downstream, a gas pipe connection portion 11, a main body portion 12, and a plug portion 13. The gas pipe connection portion 11 is connected to the flexible pipe F of the primary gas pipe shown in FIG. 1. A socket (not shown) connected to the secondary gas pipe is connected to the plug portion 13. When the socket is connected to the plug portion 13, a valve built into the gas valve body 10 opens, and when the socket is removed, it closes. In this embodiment, the main body portion 12 is L-shaped, so that the gas pipe connection portion 11 and the plug portion 13 are arranged so that their axes are perpendicular to each other.

[0026] The main body 12 has a pair of arms 12a, 12a that protrude radially outward from the plug portion 13, and each arm 12a has a threaded hole that penetrates in the axial direction of the plug portion 13. The distal end portion of the main body 12 from the arms 12a, 12a has a smaller diameter, thereby forming a stepped surface 12b.

[0027] The casing 20 is made of metal and has a body 20B and a flange 20F disposed at one end of the body 20B, as shown in FIGS. 2 and 9. The body 20B has a cylindrical peripheral wall 21, with the flange 20F provided on the outside of one end of the peripheral wall 21, and the insides of the one end and the other end of the peripheral wall 21 forming a front opening 22 and a rear opening 23, respectively. The outer diameter of the peripheral wall 21 is smaller than the inner diameter of the through hole Wa in the wall W. The peripheral wall 21 may have an octagonal shape when viewed from its axial direction, as shown in FIG. 9(A), and in this embodiment, long side portions 21L and short side portions 21S are alternately arranged.

[0028] As shown in FIG. 9(A), the body 20B has at least one pair of protruding pieces 24, 24 at the rear end of the peripheral wall 21, with the plate surface facing the axial direction of the peripheral wall 21 and protruding convexly toward the opening 23. The protruding pieces 24, 24 are arranged to face each other in the radial direction of the peripheral wall 21, and two pairs are provided in this embodiment. The four protruding pieces 24 in this embodiment are each arranged on a short side portion 21S of the peripheral wall 21. At least one pair of protruding pieces 24, 24 is formed with a through hole 24a, 24a, respectively. All of the protruding pieces 24 may have a through hole 24a formed therein.

[0029] With the through holes 24a, 24a facing the threaded holes of the arms 12a, 12a of the gas tap body 10 shown in Fig. 2 and the plug portion 13 inserted into the rear opening 23 of the body 20B, fixing screws 70 are screwed into the threaded holes of each arm 12a, as shown in Fig. 4 and Fig. 5. This fixes the gas tap body 10 to the casing 20, and with the plug portion 13 housed inside the body 20B, the gas tap body 10 is held in the casing 20.

[0030] As shown in Figures 2 and 9(C), the peripheral wall 21 has a relief hole 25 formed therein, extending in a direction from one end where the flange portion 20F is located toward the other end, which is the rear side. The relief hole 25 has a width that allows the shank of the bolt 30 to pass through, and a length that connects to the rear opening 23. In this embodiment, a pair of relief holes 25, 25 is formed and faces radially of the peripheral wall 21, and is disposed on a pair of long side portions 21L, 21L of the peripheral wall 21. Each relief hole 25 extends parallel to the axis of the peripheral wall 21, and the edge on one end of the peripheral wall 21 is located closer to the flange portion 20F than the midpoint of the peripheral wall 21 in the axial direction.

[0031] As shown in Figures 2 and 9(B), a pair of long sides 21L, 21L of the peripheral wall 21 other than the pair of long sides 21L, 21L having the relief holes 25, 25 thereon are formed with relief recesses 26, 26 that are rectangularly cut out from the rear opening 23. As shown in Figures 5 and 8, the relief recesses 26 allow the upstream portion of the main body 12 of the gas tap body 10 held in the casing 20 to escape, thereby making it possible to avoid interference between the casing 20 and the gas tap body 10.

[0032] 9(B) and 9(C), a plurality of locking holes 27 for locking the locking claws (not shown) of the decorative plate 60 attached to the casing 20 are formed in the peripheral wall 21 on the flange portion 20F side (one end side) in the circumferential direction. In this embodiment, the locking holes 27 are arranged in the long side portion 21L of the peripheral wall 21.

[0033] The flange portion 20F is formed so that the length across its outer periphery is greater than the inner diameter of the through hole Wa in the wall W, and in this embodiment, has a rounded rectangular shape as shown in Fig. 9(A). An insertion hole 28 is formed in the flange portion 20F. The insertion hole 28 is an elongated hole extending in the radial direction of the peripheral wall 21.

[0034] In this embodiment, a pair of insertion holes 28, 28 are arranged at positions point-symmetrical with respect to the axis of the peripheral wall 21, and when viewed from the axial direction of the peripheral wall 21 as shown in Figures 3 and 9(A), the escape holes 25, 25 shown in Figure 9(C) are located on an imaginary line connecting the pair of insertion holes 28, 28.

[0035] 5, the bolt 30 has a shaft that is longer than the axial length of the casing 20, and two bolts 30 are provided in this embodiment. The bolts 30, 30 have their shafts inserted into the insertion holes 28, 28, respectively, and are capable of swinging toward and away from the body portion 20B. When swung, the shaft of each bolt 30 can pass through the relief hole 25 of the casing 20.

[0036] The clamping plate 40 is a rectangular, flat metal plate, and has a screw hole 41 formed at a position eccentric to the center of gravity when viewed from the front, as shown in Fig. 2, and in this embodiment, two clamping plates 40 are provided. As shown in Figs. 3 to 5, the clamping plates 40, 40 are attached to bolts 30, 30 whose shanks are inserted into the insertion holes 28, 28 of the flange portion 20F, and the tip of the shank of each bolt 30 is screwed into the screw hole 41 of each clamping plate 40.

[0037] The plate surface of each clamping plate 40 faces the flange portion 20F, and when viewed from the axial direction of each bolt 30, each clamping plate 40 protrudes radially outward from the body portion 20B of the casing 20. As shown by the imaginary lines in Figure 4, when the bolt 30 is tilted radially inward from the body portion 20B and the shank of the bolt 30 passes through the relief hole 25 of the casing 20, the clamping plate 40 can enter up to a position outside the innermost end of the body portion 20B that corresponds to the radially inner side of the body portion 20B.

[0038] The auxiliary member 50 is made of synthetic resin and has a cylindrical shape with a bottom, and has a bottom plate portion 51 and side plate portions 52 as shown in FIGS. The bottom plate portion 51 has a shape similar to the inner shape of the peripheral wall 21 of the casing 20 when viewed from the axial direction, and has a size equal to or slightly smaller than the inner shape of the peripheral wall 21. The shape of the bottom plate portion 51 is such that it shields the rear opening 23 of the casing 20.

[0039] 10(A), the bottom plate portion 51 has an octagonal shape with its long sides and short sides arranged alternately. A through-hole 51a is formed in the center of the bottom plate portion 51, through which the plug portion 13 of the gas valve body 10 is inserted, and a pair of head portion through-holes 51b, 51b are formed around the through-hole 51a to allow the heads of the fixing screws 70, 70 to escape.

[0040] The side plate portions 52 have a shape that shields the relief hole 25 of the casing 20. The side plate portions 52 stand vertically along the outer edge of the bottom plate portion 51, and the outer surfaces of the side plate portions 52 and the side surfaces of the bottom plate portion 51 are flush with each other. As shown in FIG. 10(C), the portions of the side plate portions 52 that stand from a pair of opposing long sides of the bottom plate portion 51 are convex, and the protruding portions of each convex shape form extension portions 52a. A wedge-shaped locking portion 53 is provided on the outer side of each extension portion 52a. The locking portion 53 has a vertical locking surface 53a on the tip side of the extension portion 52a and an inclined guide surface 53b on the base end side.

[0041] 10(B) and (C), the bottom plate 51 may be provided with a co-rotation preventing portion 54 that protrudes in the opposite direction to the protruding direction of the extending portion 52a. In this embodiment, plate-shaped co-rotation preventing portions 54, 54 are provided on a pair of long sides of the bottom plate 51 from which the side plate 52 having the extending portion 52a stands. Each co-rotation preventing portion 54 is flush with the side surface of the bottom plate 51, and therefore flush with the side plate 52.

[0042] Auxiliary member 50 is attached to the inside of body portion 20B of casing 20 through front opening 22, with co-rotation prevention portion 54 facing the back side of body portion 20B. At this time, bottom plate portion 51 and side plate portion 52 fit inside peripheral wall 21, plug portion 13 of gas valve body 10 is inserted into through-hole 51a of bottom plate portion 51, and when bottom plate portion 51 abuts against stepped surface 12b of gas valve body 10, the heads of each fixing screw 70 enter each head-side through-hole 51b.

[0043] When the auxiliary member 50 is attached to the body portion 20B of the casing 20, as shown in Figure 8, each co-rotation preventing portion 54 protrudes from the rear opening 23 of the body portion 20B. The tip of each co-rotation preventing portion 54 is set to protrude at the same level as the tip of the shank of the bolt 30, or to be located further back than the tip. The co-rotation preventing portion 54 is close to the tip of the shank of the bolt 30 and the clamping plate 40 that is screwed onto this tip.

[0044] Furthermore, when the auxiliary member 50 is attached, as shown in FIG. 7, the bottom plate portion 51 shields the rear opening 23 of the body portion 20B (FIGS. 4 and 9(A)), and as shown in FIGS. 6 and 8, the extension portion 52a of the side plate portion 52 and the portion connected to the base end of the extension portion 52a shield the escape hole 25 of the body portion 20B (FIGS. 5 and 9(C)).

[0045] 6(C), when auxiliary member 50 is attached to body portion 20B, locking portion 53 of extension portion 52a is guided by guide surface 53b and fits into relief hole 25. Locking portion 53 is locked to one end of relief hole 25 by abutting locking surface 53a against a portion of peripheral wall 21 that forms one end edge of relief hole 25.

[0046] The process of attaching the buried gas valve 1 having the above-described configuration to the wall W will be described with reference to FIGS. First, as shown in FIG. 11(A), with the auxiliary member 50 not attached to the buried gas valve 1, the body portion 20B of the casing 20 is aligned with the through-hole Wa of the wall W. Next, as shown in FIG. 11(B), the bolts 30, 30 and the clamping plates 40, 40 are tilted radially inward of the body portion 20B.

[0047] The shank of each bolt 30 is longer than the casing 20, and the relief hole 25 in the peripheral wall 21 of the body 20B is connected to the rear opening 23 of the body 20B, so the shank extends from the relief hole 25 to the rear opening 23. This allows each bolt 30 to be tilted significantly, and the clamping plate 40 at the tip of the shank extends to a position outside the rear end of the body 20B, corresponding to the radially inner side of the body 20B. Therefore, the clamping plate 40 can be positioned further inward than in the prior art. In this state, the body 20B of the casing 20 is inserted into the through-hole Wa.

[0048] Next, as shown in FIG. 12(A), the flange portion 20F of the casing 20 is abutted against the interior surface of the wall W, and the inclined bolts 30, 30 and clamping plates 40, 40 are returned to their original positions radially outward of the body portion 20B. Next, as shown in Figure 12(B), when the auxiliary member 50 is attached inside the body portion 20B, the co-rotation preventing portions 54, 54 protrude from the rear opening 23 of the body portion 20B, and come close to the tip of the shank of the bolt 30, 30, and ultimately come close to the clamping plates 40, 40.

[0049] In this state, when each bolt 30 is turned in the tightening direction, the side of the clamping plate 40 screwed to the tip of each shaft portion abuts against each co-rotation prevention portion 54, and the clamping plate 40, which is prevented from rotating together with the bolt 30 by this abutment, moves toward the flange portion 20F of the casing 20.

[0050] As each bolt 30 continues to be turned, as shown in Figure 13, each clamping plate 40 contacts the back surface of the wall W via the body portion 20B and clamps the wall W together with the indoor flange portion 20F. This fixes the casing 20 to the wall W, and the buried gas valve 1 is attached to the wall W.

[0051] 2 is attached to the casing 20. The decorative plate 60 has a central cover 61 that can be opened or closed to expose or shield the plug portion 13 inside the casing 20 to the indoor space.

[0052] According to the above embodiment, when inserting the casing 20 into the through hole Wa to attach the buried gas valve 1 to the wall W, the clamping plates 40, 40 can be inserted and removed in the wide space outside the far end of the body 20B without having to switch the orientation of the clamping plates 40, 40, as viewed from the axial direction of each bolt 30, between facing inward and facing outward, for example, by rotating the bolts 30. This improves the workability of attaching the buried gas valve 1 to the wall W. Furthermore, when moving the clamping plate 40 toward the flange portion 20F of the casing 20, the clamping plate 40 can be prevented from rotating together with the bolt 30 by the co-rotation prevention portion 54 of the auxiliary member 50, without having to pull the bolt 30 slightly toward the interior and rotate it to abut the clamping plate 40 against the body portion 20B in order to prevent the bolt 30 and clamping plate 40 from rotating together. This prevents the clamping plate 40 from being unable to move toward the flange portion 20F due to co-rotation. This further improves the ease of installation of the buried gas valve 1 in the wall W. Furthermore, the bottom plate portion 51 and the side plate portion 52 of the auxiliary member 50 have shapes that block the rear opening 23 and the relief hole 25 of the body portion 20B, respectively, thereby reducing the amount of outside air that enters the room. This in turn prevents a decrease in the efficiency of air conditioning in the room. Furthermore, because the auxiliary member 50 is cylindrical with a bottom and has a shape that fits into the peripheral wall 21 of the body portion 20B, the gap between the auxiliary member 50 and the peripheral wall 21 can be reduced, thereby enhancing the effect of reducing the amount of outside air that enters the room. Furthermore, the auxiliary member 50 is engaged with one end of the escape hole 25 of the casing 20 by the engaging portion 53 of the side plate portion 52 and fixed to the casing 20, thereby avoiding inconveniences such as, for example, the auxiliary member moving toward the inside of the room, interfering with the installation of the decorative plate 60 or the opening and closing operation of the lid portion 61 of the decorative plate 60.

[0053] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. In the above embodiment, the gas valve body 10 used is a type of gas valve in which the socket is connected to the plug portion to open the built-in valve and the socket is removed to close the valve, but it may also be a gas valve in which the gas flow path is opened and closed by turning a knob. In the above embodiment, the wall W is used as the interior material facing the indoor space to which the buried gas valve 1 is attached, but it may also be a floor, a top plate of a sink, or the like. [Industrial Applicability]

[0054] The present invention can be applied to a buried gas valve that is attached to a through-hole in an interior material that faces an indoor space. [Explanation of symbols]

[0055] 1 buried type gas valve, 10 gas valve body, 11 gas pipe connection part, 12 main body part, 12a arm part, 12b step surface, 13 plug part, 20 casing, 20B body part, 21 peripheral wall, 21L long side part of peripheral wall, 21S short side part of peripheral wall, 22 front side opening (opening on one end side), 23 back side opening (opening on the other end side), 24 protruding piece, 24a through hole, 25 relief hole, 26 relief recess, 27 locking hole, 28 insertion hole, 30 bolt, 40 clamping plate, 41 screw hole, 50 auxiliary member, 51 bottom plate part, 51a through hole, 51b head through hole, 52 side plate part, 52a extension part, 53 locking part, 53a locking surface, 53b guide surface, 54 Co-rotation prevention part, 60 decorative plate, 61 lid part, 70 fixing screw, F flexible pipe, W wall (interior material), Wa through hole

Claims

1. A buried gas valve that is attached to a through-hole in an interior material facing an indoor space, The gas valve body, a casing having a cylindrical body that holds the gas valve body therein and a flange that is provided at one end of the body and has an insertion hole formed therein, the body being inserted into the through-hole of the interior material so that the flange comes into contact with the interior surface of the interior material; a bolt having a shaft portion inserted into an insertion hole of the flange portion and capable of swinging toward and away from the body portion; a clamping plate screwed to the shank of the bolt with its plate surface facing the flange portion, When the bolt is turned in the tightening direction while the clamping plate is prevented from rotating together with the bolt by the body portion, the clamping plate and the flange portion clamp the interior material, thereby fixing the casing to the interior material, The shank of the bolt is formed to be longer than the axial length of the casing, A buried gas valve characterized in that a relief hole is formed in the peripheral wall of the body of the casing, through which the shank of the bolt can pass, and this relief hole is connected to an opening on the other end side of the body.

2. The buried gas valve according to claim 1, The casing further includes an auxiliary member attached to the inside of the body portion through an opening at one end side of the body portion, The auxiliary member has a co-rotation preventing portion that protrudes from the opening on the other end side of the body portion and is adjacent to the tip of the shank of the bolt.

3. The buried gas valve according to claim 2, the auxiliary member attached to the body of the casing has a side plate portion at one end of the body and a bottom plate portion at the other end, The bottom plate portion is formed with a through-hole for passing the gas valve body held in the body portion, and the co-rotation prevention portion is provided on the surface opposite to the side plate portion, the side plate portion has a shape that covers the relief hole of the body portion, The buried gas valve is characterized in that the bottom plate portion has a shape that blocks the opening on the other end side of the body portion.

4. The buried gas valve according to claim 3, A buried gas valve characterized in that the side plate portion of the auxiliary member has a locking portion that is locked to an end portion on one end side of the body portion at the escape hole of the body portion.

5. The buried gas valve according to any one of claims 2 to 4, A buried gas valve characterized in that the auxiliary member is cylindrical with a bottom and has a shape that fits inside the peripheral wall of the body portion.

6. A buried gas valve installed in a through-hole in an interior material facing an indoor space, The gas valve body, a casing having a cylindrical body that holds the gas valve body therein and a flange that is provided at one end of the body and has an insertion hole formed therein, the body being inserted into the through-hole of the interior material so that the flange comes into contact with the interior surface of the interior material; a bolt having a shaft portion inserted into an insertion hole of the flange portion and capable of swinging toward and away from the body portion; a clamping plate that is screwed onto the shank of the bolt with its plate surface facing the flange portion and clamps the interior material together with the flange portion, thereby fixing the casing to the interior material, A relief hole through which at least the shank of the bolt can pass is formed in the peripheral wall of the body of the casing, and an auxiliary member is attached to the inside of the body from an opening on one end side of the body, The auxiliary member is a cylindrical member with a bottom that fits inside the peripheral wall of the body portion, and has a side plate portion at one end of the body portion and a bottom plate portion at the other end, and a through hole is formed in the bottom plate portion to allow the gas valve body held in the body portion to pass through. the side plate portion has a shape that covers the relief hole of the body portion, The buried gas valve is characterized in that the bottom plate portion has a shape that blocks the opening on the other end side of the body portion.

Images