JP7612189B2 - Fire hydrant facilities - Google Patents

Description

The present invention relates to a fire hydrant system that is installed on the interior walls of buildings such as office buildings, apartment buildings, and department stores, and is configured to discharge fire water from a water supply pipe through a fire hose by opening a fire hydrant valve in the event of a fire.

As described in Patent Documents 1 and 2, fire hydrant storage boxes that store fire hoses, nozzles, fire hydrant valves, and the like used in firefighting activities in preparation for a fire are known. Such fire hydrant storage boxes are installed in a storage box installation space provided in an inner wall such as a passage wall in a building, and the tip of a branch pipe branching off from a water supply pipe that is vertically piped on the rear side of the inner wall is inserted into the fire hydrant storage box through a branch pipe insertion hole provided in the back plate of the fire hydrant storage box, and the inlet of the fire hydrant valve is connected to the tip, while the base end of the fire hose is connected to the outlet of the fire hydrant valve to form a fire hydrant system.

A water supply pipe is also installed behind the fire hydrant storage box, and a rigid horizontal branch pipe branches off from this water supply pipe, the tip of which is pulled into the fire hydrant storage box, and a fire hydrant valve is attached to the tip of the branch pipe.

When installing a fire hydrant storage box on the interior wall of a building using the fire extinguishing equipment configured as above, a rectangular space of the same shape as the fire hydrant storage box is first created in the interior wall, and the fire hydrant storage box is then embedded and fixed in this space. However, there may be some relative misalignment between the position of the rectangular space for installing the fire hydrant storage box and the branch pipe that branches off from the water supply pipe and is arranged horizontally.

For this reason, the storage box installation space in which the fire hydrant storage box is to be installed is formed larger than usual, and the position of the fire hydrant storage box is adjusted within the storage box installation space to correct the misalignment between the branch pipe insertion hole of the fire hydrant storage box and the branch pipe (supply pipe). However, adjusting the position of the fire hydrant storage box within the storage box installation space has the problem of taking time and effort.

Patent Document 3 proposes a fire extinguishing system that includes a flexible tube, a fire hydrant valve provided at one end of the flexible tube, a flange-shaped mounting plate fixed near the fire hydrant valve, a joint provided at the other end of the flexible tube, and a fire hydrant storage box in which a fire hydrant valve insertion hole through which the fire hydrant valve can be inserted and which has an opening area smaller than that of the mounting plate is formed in the rear box, in which the fire hydrant valve is inserted into the fire hydrant valve insertion hole and the mounting plate is fixed to the rear box, and the joint is connected to a branch joint provided in a water supply pipe that is piped inside the building wall. According to this fire extinguishing system, the use of a flexible tube makes it unnecessary to adjust the positional misalignment between the fire hydrant storage box and the branch pipe (water supply pipe).

Japanese Utility Model Application Publication No. 3-78566 JP 2005-270494 A JP 2019-10255 A

However, in the fire extinguishing equipment of Patent Document 3, after the fire hydrant valve attached to the end of the flexible pipe is closed, water is filled into the vertical piping and the flexible pipe and a predetermined pressure is applied to perform a water pressure test. Because the flexible pipe is filled with water, the flexibility of the flexible pipe is reduced, which poses the problem of reduced workability.

Furthermore, the mounting plate attached to the tip of the flexible tube is fixed to the back plate of the fire hydrant storage box with bolts and nuts at the four corners of the mounting plate. However, as mentioned above, the flexibility of the flexible tube is reduced when filled with water, and this poses the problem that it takes time and effort to fully abut the mounting plate against the back surface of the back plate of the fire hydrant storage box. If the mounting plate is not fully abutted against the back surface of the back plate of the fire hydrant storage box, excessive stress will be continuously applied to certain bolts, causing deterioration, or the mounting plate will be displaced relative to the wall plate of the fire hydrant storage box, causing the fire hydrant valve to shift from its correct position inside the fire hydrant storage box.

The present invention was made in consideration of these problems, and its purpose is to provide a fire hydrant system that can easily and reliably connect a fire hydrant valve arranged in a fire hydrant storage box to a water supply pipe via a flexible branch pipe and a joint member branched from the water supply pipe, without considering the relative positional misalignment between the fire hydrant storage box and the water supply pipe, and can easily and accurately install the fire hydrant storage box on the inner wall of a building.

The fire hydrant equipment of the present invention comprises:
A fire hydrant storage box that is installed on an inner wall of a building and stores a fire hose therein, and has a non-circular joint insertion hole formed in a wall panel;
a joint member that is inserted into the joint insertion hole and disposed so as not to be rotatable relative to the wall plate;
The fire hydrant storage box is characterized by having a flexible branch pipe connecting a water supply pipe installed outside the fire hydrant storage box to the inlet of the joint member, and a fire hydrant valve connected to the outlet of the joint member.

According to the fire hydrant equipment of the present invention, the joint member is inserted into the joint insertion hole of the fire hydrant storage box and arranged and fixed so that it cannot rotate relative to the wall panel, the inlet of this joint member is connected to the water supply pipe via a flexible branch pipe, and a fire hydrant valve is connected to the outlet of the joint member. This allows the fire hydrant equipment to be easily installed in a desired location without having to consider the relative positional deviation between the fire hydrant storage box and the suction pipe.

The fire hydrant equipment is connected to a flexible branch pipe via a joint member that is inserted into a joint insertion hole provided in the wall panel of the fire hydrant storage box and arranged so as not to be rotatable relative to the wall panel, so that the fire hydrant valve can be arranged and maintained in the correct position within the fire hydrant storage box even after the branch pipe is filled with water.

FIG. 1 is a cross-sectional view showing a fire hydrant installation of the present invention. FIG. 1A is an exploded perspective view showing a structure for mounting a joint member to a wall panel of a fire hydrant storage box; FIG. 1B is a perspective view showing a structure for mounting a joint member to a wall panel of a fire hydrant storage box; 4(a) is a side view showing the mounting structure of the joint member to the wall panel of the fire hydrant storage box, and (b) is a cross-sectional view taken along line AA in FIG. 1A is an exploded perspective view showing another example of a structure for mounting a joint member to a wall panel of a fire hydrant storage box, and FIG. 1B is a perspective view showing another example of a structure for mounting a joint member to a wall panel of a fire hydrant storage box. 1A is an exploded perspective view showing another example of a structure for mounting a joint member to a wall panel of a fire hydrant storage box; FIG. 1B is an exploded perspective view showing another example of a structure for mounting a joint member to a wall panel of a fire hydrant storage box; 7(a) is a side view showing another example of a mounting structure for a joint member to a wall panel of a fire hydrant storage box, and (b) is a cross-sectional view taken along line BB in FIG.

A specific embodiment of the present invention will be described with reference to the drawings. As shown in Figs. 1 and 2, the fire hydrant system includes a fire hydrant storage box 1 installed on the inner wall W of a building, a fire hose 2 stored in the fire hydrant storage box 1, a nozzle 3 connected to the end of the fire hose 2, a joint member 4 inserted into a joint insertion hole 11a formed in the wall panel of the fire hydrant storage box 1, a water supply pipe 5 piped in the rear space of the inner wall W, a flexible branch pipe 6 branching from the water supply pipe 5 toward the fire hydrant storage box 1 and connected to the inlet of the joint member 4, and a fire hydrant valve 7 disposed at the outlet of the joint member 4. The base end of the fire hose 2 is connected to the outlet of the fire hydrant valve 7 via a connection part 71 as necessary.

A rectangular storage box installation space W1 capable of storing a fire hydrant storage box 1 is formed in the interior wall W of the building, and the fire hydrant storage box 1 is stored and installed in this storage box installation space W1 from the front side. Furthermore, the water supply pipe 5 is piped vertically in the rear space of the interior wall W in which the storage box installation space W1 is provided, and the base end of a flexible branch pipe 6 is connected to the water supply pipe 5 so as to communicate with the water supply pipe 5, with the branch pipe 6 protruding from the water supply pipe 5 toward the storage box installation space W1.

As shown in FIG. 3, a non-circular joint insertion hole 11a is formed in the wall panel 11 of the fire hydrant storage box 1, penetrating from the inner to the outer surface. The non-circular shape includes shapes other than a perfect circle. The joint insertion hole 11a may have any shape that allows the locking portion 41 of the joint member 4, which will be described later, to be locked so that the joint member 4 can be inserted into the joint insertion hole 11a and cannot rotate relative to the wall panel 11. For example, as shown in FIG. 3, the joint insertion hole 11a can be formed in a polygonal shape (hexagonal shape in FIG. 3, but not limited to this). Although FIG. 1 shows a case in which the joint insertion hole 11a of the fire hydrant storage box 1 is formed in the back panel, it may be formed in either the left or right side panel.

The joint member 4 is inserted into the joint insertion hole 11a of the fire hydrant storage box 1 and is arranged so as not to be rotatable relative to the wall panel 11 of the fire hydrant storage box 1. The joint member 4 is formed from a tubular joint member body 40 with both ends open, with one end opening formed as the inlet 42a and the other end opening formed as the outlet 42b. Note that although Figure 3 shows the case where the joint member 4 is formed in an L-shape, it may also be straight.

A ring-shaped locking portion 41 is formed on the outer peripheral surface of the outlet 42b side (outlet end) of the joint member 4, and has a certain thickness to lock onto the inner peripheral surface of the joint insertion hole 11a of the fire hydrant storage box 1 so that the joint member 4 is inserted into the joint insertion hole 11a and cannot rotate relative to the wall panel 11. The locking portion 41 does not need to be formed in a ring shape, and may be provided intermittently in the circumferential direction on the outer peripheral surface of the joint member 4.

The outer peripheral surface of the locking portion 41 is formed as an abutment surface 41a that abuts against the inner peripheral surface of the joint insertion hole 11a of the fire hydrant storage box 1. The locking portion 41 is formed to have an outer shape that is the same as and the same size as the joint insertion hole 11a of the fire hydrant storage box 1 so that it can be fitted into the joint insertion hole 11a of the fire hydrant storage box 1. When the joint member 4 is inserted into the joint insertion hole 11a of the fire hydrant storage box 1, the abutment surface 41a of the locking portion 41 abuts and engages with the inner peripheral surface of the joint insertion hole 11a over almost the entire surface, and the joint member 4 is disposed in a state where it cannot rotate relative to the wall panel 11 of the fire hydrant storage box 1. The locking portion 41 is formed to a thickness that is the same as or slightly thinner than the thickness of the wall panel in which the joint insertion hole 11a of the fire hydrant storage box 1 is formed.

In the joint member 4, a wall plate abutment portion 44 that abuts against the wall plate 11 of the fire hydrant storage box 1 is formed around the entire outer periphery of the locking portion 41 on the inlet 42a side, protruding in the radial direction of the inlet 42a. The wall plate abutment portion 44 may be formed intermittently on the outer periphery of the locking portion 41.

Furthermore, on the outer peripheral surface of the joint member body 40 of the joint member 4, a wedge member support portion 45 is formed at a predetermined distance from the wall plate abutment portion 44 across the locking portion 41, and a wedge member driving groove portion 46 into which the wedge member 8 described later is driven is formed around the entire circumference of the joint member body 40 between the opposing surfaces of the wedge member support portion 45 and the locking portion 41.

The wedge member 8 has a flat wedge body 81 with a certain thickness, and a notch 82 that opens at the edge of the wedge body 81 by cutting a part of the wedge body into a U-shape. The upper periphery (arc-shaped portion) of the notch 82 of the wedge member 8 is formed in a shape that approximately matches the shape of the bottom 46a of the wedge member driving groove 46. The wedge member 8 is driven into the wedge member driving groove 46 until the upper periphery of the wedge member 8 abuts against the bottom 46a of the wedge member driving groove 46, and the wall plate 11 of the fire hydrant storage box 1 is stably held by the opposing surfaces of the wedge member 8 and the wall plate abutment portion 44, and the joint member 4 is inserted into the wall plate 11 of the fire hydrant storage box 1 and stably fixed so as not to rotate relative to the wall plate 11 (see FIG. 4).

In this way, the wall plate abutment portion 44 of the joint member 4 and the wedge member 8 abut on the wall plate 11 of the fire hydrant storage box 1 from both sides in surface contact, and the wall plate 11 of the fire hydrant storage box 1 is firmly clamped between the wedge member 8 and the wall plate abutment portion 44 of the joint member 4, so that the joint member 4 is stably arranged and fixed in an accurate position to the wall plate 11 of the fire hydrant storage box 1.

A fire hydrant valve thread 47 is formed on the outer peripheral surface of the outlet end of the coupling member 4, while a female thread is also formed on the inner peripheral surface of the inlet portion of the fire hydrant valve 7. By screwing the female thread of the fire hydrant valve 7 into the fire hydrant valve thread 47 of the coupling member 4, the fire hydrant valve 7 is screwed together with the outlet port 42b of the coupling member 4 in a watertight manner.

The tip of a flexible branch pipe 6 is watertightly connected to the inlet end of the joint member 4 via a general-purpose connecting member. Even if the water supply pipe 5 and the joint insertion hole 11a of the fire hydrant storage box 1 are misaligned relative to the previously assumed position, the branch pipe 6 is flexible and can bend as necessary to absorb the misalignment, allowing the joint member 4 and the water supply pipe 5 to be easily connected via the branch pipe 6.

The coupling member 4 is attached to the wall plate 11 of the fire hydrant storage box 1 so that it cannot rotate, with the abutment surface 41a of its engaging portion 41 abutting the inner peripheral surface of the coupling insertion hole 11a of the fire hydrant storage box 1. Therefore, even if the branch pipe 6 moves due to an increase in the internal pressure of the branch pipe 6 caused by the branch pipe 6 filling with water, the coupling member 4 will not be displaced relative to the wall plate 11 of the fire hydrant storage box 1, and the fire hydrant valve 7 can be reliably maintained in the correct mounting position within the fire hydrant storage box 1.

In the above, the case where the joint insertion hole 11a of the fire hydrant storage box 1 is formed in a polygonal shape when viewed from the front has been described, but the joint insertion hole 11a of the fire hydrant storage box 1 may be formed so that the locking portion 41 of the joint member 4 is locked to its inner circumferential surface, and the joint member 4 is inserted into the joint insertion hole 11a so that it can be arranged so as not to rotate relative to the wall panel 11. The joint insertion hole 11a of the fire hydrant storage box 1 is not limited to a polygonal shape, and may be an elliptical shape, a shape in which one or more sides of the polygon are formed in an arc shape, or a shape in which all sides of the polygon are formed in an arc shape (a shape formed by combining arc-shaped sides). The joint insertion hole 11a of the fire hydrant storage box 1 may be formed in a non-circular shape by forming one or more recesses 11b that open to the inner circumferential surface in part of a perfect circular through hole, as shown in Figures 5 and 6. In this case, the locking portion 41 of the joint member 4 is formed of a circular base 41b having a certain thickness formed on the outer peripheral surface of the joint member body 40 of the joint member 4 and one or more locking protrusions 41c protruding from the outer peripheral surface of the base 41b, and the outer peripheral surface of the locking protrusion 41c abuts against the inner peripheral surface of the recess 11b of the joint insertion hole 11a. The outer shape of the locking portion 41 of the joint member 4 is formed to be the same shape and the same size so that it can be fitted into the joint insertion hole 11a of the fire hydrant storage box 1. Also, the locking protrusion 41c that locks into the recess of the joint insertion hole 11a may be formed as the locking portion without forming the circular base 41b on the outer peripheral surface of the joint member body 40 of the joint member 4. Note that the same structural parts as those shown in Figures 3 and 4 are given the same symbols and will not be described.

In the above, the wedge member 8 is used to fix the joint member 4 to the wall panel 11 of the fire hydrant storage box 1, but this is not limited thereto. For example, as shown in FIG. 7, a nut body 9 may be used. Note that the same components as those of the joint member 4 shown in FIG. 3 and FIG. 4 are given the same reference numerals and will not be described. In this case, instead of the wedge member support portion 45, a wall panel fixing screw portion 48 for screwing the nut body 9 is formed on the outer circumferential surface of the joint member body 40 of the joint member 4. Note that the wall panel fixing screw portion 48 for screwing the nut body 9 may be formed to have the same diameter as the outer diameter of the joint member body 40 of the joint member 4 or a diameter one size larger.

Then, the joint member 4 is inserted into the joint insertion hole 11a of the fire hydrant storage box 1, and the locking portion 41 of the joint member 4 is fitted into the joint insertion hole 11a. The nut body 9 is screwed into the wall plate fixing screw portion 48 of the joint member 4, and the wall plate 11 of the fire hydrant storage box 1 is stably clamped by the opposing surfaces of the nut body 9 and the wall plate abutment portion 44, so that the joint member 4 is inserted into the joint insertion hole 11a of the wall plate 11 of the fire hydrant storage box 1 and is stably fixed so as not to rotate relative to the wall plate 11.

In the above, the fixing means for disposing and fixing the joint member 4 to the wall panel 11 of the fire hydrant storage box 1 (the locking portion 41 of the joint member 4, the wall panel abutment portion 44, the wedge member support portion 45, and the wall panel fixing screw portion 48, etc.) are formed on the outflow side end of the joint member 4, but they may also be formed on the inflow side end.

Next, a method for constructing a fire hydrant system will be described. In the following description, a case where a wedge member 8 is used will be described as an example. A rectangular storage box installation space W1 that can store a fire hydrant storage box 1 is formed in the inner wall W of a building facing the passageway, while a water supply pipe 5 is vertically piped behind the inner wall W in which the storage box installation space W1 is provided, as shown in FIG. 1, and a flexible branch pipe 6 that branches toward the storage box installation space W1 is connected to the water supply pipe 5 so that its base end communicates with the water supply pipe 5. The length of the branch pipe 6 is such that its tip end can be connected to the inlet 42a of the joint member 4 that is arranged and fixed in a state of being inserted into the joint insertion hole 11a provided in the wall panel 11 (e.g., the back panel, the left and right side panels) of the fire hydrant storage box 1 that is stored and installed in the storage box installation space W1.

Before storing and installing the fire hydrant storage box 1 in the storage box installation space W1, the joint member 4 is disposed and fixed to the wall panel 11 of the fire hydrant storage box 1. To dispose and fix the joint member 4 to the wall panel 11 of the fire hydrant storage box 1, first, the joint member 4 is inserted into the joint insertion hole 11a of the fire hydrant storage box 1, and the locking portion 41 of the joint member 4 is fitted into the joint insertion hole 11a. In this state, the joint member 4 cannot rotate relative to the wall panel 11 of the fire hydrant storage box 1.

Then, the wedge member 8 is driven into the wedge member driving groove 46, and the wall panel 11 of the fire hydrant storage box 1 is clamped between the opposing surfaces of the wedge member 8 and the wall panel abutment portion 44, thereby inserting the joint member 4 into the joint insertion hole 11a of the fire hydrant storage box 1 and fixing it in a stable and accurate position so that it cannot rotate relative to the wall panel 11.

Next, the fire hydrant storage box 1, which contains fire hoses and the like stored inside, is stored and installed from the front side in the storage box installation space W1 provided on the inner wall W, and the tip of the flexible branch pipe 6 is then connected in communication with the inlet 42a of the joint member 4. The fire hydrant storage box 1 is installed in the storage box installation space W1 so that the door 1a, which is freely openable and closable at its front end opening, faces forward from the front end opening of the storage box installation space W1, and joint treatment is performed in the gap between the outer periphery of the fire hydrant storage box 1 and the storage box installation space W1.

Even if there is a relative misalignment between the inlet 42a of the joint member 4 fixed to the joint insertion hole 11a of the fire hydrant storage box 1 and the water supply pipe 5, the branch pipe 6 is flexible, so the branch pipe 6 can be bent as necessary to absorb the misalignment and easily connect the tip of the branch pipe 6 to the inlet 42a of the joint member 4. Furthermore, because the branch pipe 6 is not filled with water, the flexibility of the branch pipe 6 is maintained, and the branch pipe 6 can be easily bent as necessary to connect the branch pipe 6 to the joint member 4.

Then, the female thread portion formed on the inner peripheral surface of the inlet portion of the fire hydrant valve 7 is screwed into the fire hydrant valve thread portion 47 formed on the outer peripheral surface of the outlet end of the coupling member 4, thereby integrating the fire hydrant valve 7 in a watertight communication state with the outlet port 42b of the coupling member 4. If necessary, the base end of the fire hose 2 can be connected in a watertight communication state to the outlet port of the fire hydrant valve 7 via the connection portion 71 to install the fire hydrant equipment.

The above describes a method of installing a fire hydrant system using the wedge member 8. When using the nut body 9, the joint member 4 is inserted into the joint insertion hole 11a of the fire hydrant storage box 1 in the same manner as described above, and the locking portion 41 of the joint member 4 is fitted into the joint insertion hole 11a. Then, the nut body 9 is screwed into the wall plate fixing screw portion 48 of the joint member 4, and the wall plate 11 of the fire hydrant storage box 1 is clamped by the opposing surfaces of the nut body 9 and the wall plate abutment portion 44, so that the joint member 4 is inserted into the joint insertion hole 11a of the wall plate 11 of the fire hydrant storage box 1 and stably fixed so that it cannot rotate relative to the wall plate 11. The subsequent installation procedure is the same as when the wedge member 8 is used, so a description thereof will be omitted.

1. Fire hydrant storage box
11 Wall Panel
11a Joint insertion hole 2 Fire hose 3 Nozzle 4 Joint member
40 Joint component body
41 Locking part
41a Contact surface
41b Base
41c Locking protrusion
42a Inlet
42b Outlet
44 Wall panel abutment
45 Wedge member support
46 Wedge member insertion groove
48 Wall panel fixing screw portion 5 Water supply pipe 6 Branch pipe 7 Fire hydrant valve 8 Wedge member 9 Nut body
W1 Storage box installation space

Claims (6)

a step of inserting a coupling member having an engagement portion into a non-circular coupling insertion hole of a fire hydrant storage box formed in a wall panel, engaging the engagement portion of the coupling member with an inner peripheral surface of the coupling insertion hole, and fixing the coupling member inserted into the coupling insertion hole so as not to rotate relative to the wall panel;
a step of connecting a branch pipe that branches off from a water supply pipe that is installed outside the fire hydrant storage box and is not filled with water to an inlet of the joint member that is arranged and fixed to a wall plate of the fire hydrant storage box;
A method for installing a fire hydrant system, comprising the steps of connecting an inlet portion of a fire hydrant valve to the outlet side end of the coupling member and connecting a base end of a fire hose to the outlet of the fire hydrant valve. The method for constructing a fire hydrant system according to claim 1, characterized in that the joint insertion hole of the fire hydrant storage box is formed in a polygonal shape, and the locking portion of the joint member is formed so as to be able to fit into the joint insertion hole and to match the joint insertion hole. The method for constructing a fire hydrant system according to claim 1, characterized in that a recess is formed in the joint insertion hole of the fire hydrant storage box, and the locking portion of the joint member is formed so as to be able to lock into the recess of the joint insertion hole. The method for constructing a fire hydrant system according to any one of claims 1 to 3, characterized in that the joint member has a wall plate abutment portion extending from the outer periphery of the locking portion, and the joint member is arranged and fixed in a state in which the wall plate abutment portion is abutted against the wall plate of the fire hydrant storage box so as not to be able to rotate relative to the wall plate. The construction method for fire hydrant equipment according to claim 4, characterized in that a wedge member support part is formed at a predetermined distance from the wall plate abutment part of the joint member, sandwiching the locking part, a groove part for driving a wedge member is formed between the opposing surfaces of the wedge member support part and the locking part, a wedge member is driven into the groove part for driving a wedge member, the wall plate of the fire hydrant storage box is sandwiched between the wedge member and the wall plate abutment part, and the joint member is arranged and fixed so as not to rotate relative to the wall plate. The method for constructing a fire hydrant system according to claim 4, characterized in that a wall panel fixing screw portion into which a nut body is screwed is formed on the outer peripheral surface of the joint member, closer to the end side than the locking portion, and the wall panel of the fire hydrant storage box is clamped between the nut body screwed onto the wall panel fixing screw and the wall panel abutment portion.

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