JP5901067B2 - Protective cap for sprinkler head and tool for removing the protective cap - Google Patents

Description

The present invention relates to a fire extinguishing sprinkler head, and more particularly to a protective cap that protects the sprinkler head from external forces during transportation of the sprinkler head or during construction, and a tool for removing the protective cap.

The sprinkler head is installed on a ceiling surface or a wall surface in a building, has a nozzle that can be connected to a pipe connected to a water supply source at one end, and a heat-sensitive operation unit at the other end. During normal times, the heat-sensitive operating part supports a valve body that closes the nozzle.

As an example of the sprinkler head, there is a conshielded sprinkler head in which the sprinkler head described in Patent Document 1 is installed in a state of being embedded in a ceiling surface or a wall surface, and the sprinkler head is covered with a cover plate. The conshielded sprinkler head is used as a sprinkler head excellent in design.

The sprinkler head shown in FIG. 12 has a cylindrical member A provided outside the sprinkler head SH, and a cylindrical retainer B having a cover plate P joined thereto by a low melting point alloy can be connected to the lower portion of the cylindrical member A. It has become.

As a structure of the connecting portion between the tubular member A and the retainer B, a spiral groove A1 carved in the lower part of the tubular member A and a projection B1 projecting from the outer peripheral surface of the retainer B are configured to be screwable. .

When the retainer B is connected to the cylindrical member A, the sprinkler head SH, the cylindrical member A, and the retainer B are arranged on the back of the ceiling, and only the cover plate P is arranged close to the ceiling C. Since the cover plate P is connected to the retainer B by a low melting point alloy, the cover plate P falls due to heat at the time of fire. The sprinkler head SH is exposed when the cover plate P falls.

When the sprinkler head SH is exposed in the event of a fire, the thermal operation part G of the sprinkler head SH is subsequently activated / destructed, and water is sprayed from the sprinkler head SH by opening the valve body inside the sprinkler head SH. It will be erased.

International Publication No. 2010/038253

In the conshielded sprinkler head, as shown in FIG. 12, a cylindrical protective cap D is fitted on the inner peripheral surface of the cylindrical member in order to prevent deformation or damage due to external impact during transportation or construction. The protective cap D is tightly fitted in the cylindrical member A so as not to be easily removed by the external impact.

The sprinkler head SH has an engaging portion K between which the fastening tool is engaged between the frame F and the pipe connecting screw portion T. When the sprinkler head SH is attached to the pipe, the protective cap D is a cylindrical member. After removing from A, the engagement portion K of the sprinkler head SH in the cylinder member A is gripped by a fastening tool, and the screw portion T of the sprinkler head SH is screwed into the screw portion on the piping side.

When the connection with the pipe is completed, the protective cap D is fitted into the cylindrical member A again in order to protect the sprinkler head SH from external force during the construction of the ceiling board. When the construction of the ceiling board is completed, the protective cap D is removed and the retainer B on which the cover plate P is installed is attached to the cylindrical member A. Then, the sprinkler head SH in the cylindrical member A is constructed so as to be concealed by the cover plate P.

Therefore, in the conshield head described above, the protective cap D is removed twice, and the operator frequently attaches and removes the protective cap D. Further, when the protective cap D is removed, the tubular member A and the protective cap D are tightly fitted, so that the removal work of the protective cap D is not performed smoothly and takes time.

In addition, when the hole H through which the retainer B is inserted is drilled in the ceiling C as shown in FIG. 12, the hole H may be overfilled with the putty 100. At this time, if the putty 100 adheres to the outer peripheral surface of the protective cap D, the putty 100 and the protective cap D may be fixed. In this case, it is difficult to pull out the protective cap D from the tubular member A.

Therefore, in the present invention, in view of the above problems, even when the protective cap is tightly fitted to the cylindrical member of the sprinkler head or when the putty used for repairing the ceiling hole is attached to the outer surface of the protective cap. An object of the present invention is to provide a protective cap and a protective cap removing tool capable of easily removing the cap.

In order to achieve the above object, the present invention provides the following protective cap for a sprinkler head and the protective cap removing tool.
It is a tool for removing the protective cap fitted to the cylindrical member with a bottomed cylindrical shape installed outside the sprinkler head main body connected to the water supply pipe, and the main body of the tool is inside the cylindrical protective cap. It has a claw that can be engaged with the tool locking part formed inside the protective cap on one end side of the main body, and the outer peripheral part of the main body can move along the inner side of the protective cap The other end side of the main body is a protective cap removal tool which is a gripping portion.
According to this, compared with the case where the protective cap removal tool (hereinafter referred to as “tool”) is not used, the burden on the operator can be greatly reduced. Specifically, when a tool is not used, an operator reaches for the protective cap protruding from the hole drilled in the ceiling, grasps the protective cap, and removes the protective cap from the sprinkler head. However, by using the tool, the operator does not have to reach to the ceiling, and the protective cap is removed from the sprinkler head by operating the tool to engage the protective cap with the tool and pulling the tool downward. And the burden on the operator is greatly reduced. Therefore, even when the protective cap is tightly fitted to the cylindrical member of the sprinkler head, the protective cap can be easily removed from the sprinkler head by using a tool.
In addition, the tool engaging portion of the protective cap is formed inside the protective cap, and the claw formed on the main body of the tool can be engaged with the aforementioned tool engaging portion. Even when the putty is attached, the tool engaging portion of the protective cap and the claw of the tool can be engaged. The protective cap and the tool body are engaged so that they can be rotated. If the putty is attached to the outer surface of the protective cap, the protective cap will also rotate when the tool is rotated. The putty attached to the can be peeled off. When releasing the engagement, it is rotated in the direction opposite to the aforementioned rotation direction. Thereby, engagement / disengagement can be performed by a simple operation.
Furthermore, since the outer periphery of the tool body can be moved along the inner side of the protective cap, the tool can be fitted and locked in the protective cap in a coaxial state. The tool and the protective cap can be prevented from coming off when the tool is rotated with the claw of the tool engaged or when the tool is pulled downward.

As for the tool, a claw that engages the protective cap in the direction in which the protective cap is pulled out from the sprinkler head is formed as a first engaging portion on the main body, and the protective cap and the tool are provided separately from the first engaging portion. A second engaging portion that engages with each other is formed. According to this, it becomes possible to form a 2nd engaging part in a position different from the nail | claw which is a 1st engaging part on the main body of a tool.

About the said tool, a nail | claw can be installed in the outer peripheral part of a main body, and a tool engaging part can be installed in the inner peripheral part of a protective cap, and can be comprised. According to this, when rotating a tool and a protective cap, it can be rotated with a small torque, and an operator's burden can be reduced.

About the said tool, the guide part which guides a nail | claw to the tool engaging part of a protective cap can be installed in a main body, and can be comprised.
According to this, when the tool main body is fitted inside the protective cap, the claw is engaged with the tool by moving the guide portion of the tool along the contact portion with the guide portion formed inside the protective cap. It can be guided to the stop portion and engaged with the tool locking portion.

About the said tool, the stopper can be provided in the main body so that the protective cap and the tool can be fitted to a predetermined position.
According to this, it is possible to prevent the sprinkler head component housed in the protective cap from interfering with the tool.

The tool can be configured by providing a strip container in the main body or the grip.
According to this, when the protective cap and the tool are rotated with the protective cap and the tool engaged, there is a possibility that the putty attached to the outer surface of the protective cap will peel off and soil the floor surface. Therefore, it is possible to prevent the drop to the floor surface by storing the putty exfoliation in the exfoliation container.

The present invention also provides a protective cap that can be engaged with any of the tools according to the present invention. In other words, the protective cap has a cylindrical shape, and a tool engaging portion that can be engaged with the claw of the tool is installed on the inner side thereof, and a space for inserting the claw to the tool engaging portion can be formed and configured. .
According to this, since the tool claw can be engaged with the tool engaging portion installed inside the protective cap by forming the space, the cylindrical member of the protective cap and the sprinkler head is tightly fitted. Even so, the protective cap can be removed by using a tool. Therefore, by tightly fitting the protective cap and the cylindrical member of the sprinkler head, it is possible to prevent the protective cap from coming off due to the impact when the sprinkler head receives an external impact.

The protective cap can be configured by forming a spiral groove on the outer surface of the protective cap. According to this, even when the putty is fixed to the outer surface of the protective cap when the protective cap is removed from the sprinkler head, the putty can be peeled off from the outer surface of the protective cap by rotating the tool and the protective cap. . When the tool and the protective cap are rotated, the protective cap rotates along the spiral groove, and the protective cap rotates downward along the hardened putty side spiral groove to remove the protective cap from the sprinkler head. Can do.

As described above, according to the present invention, even when the protective cap is tightly fitted to the cylindrical member of the sprinkler head or when the putty used for repairing the ceiling hole is attached to the outer surface of the protective cap. It is possible to provide a protective cap and a protective cap removing tool capable of easily removing the protective cap.

Sectional drawing of the sprinkler head and protective cap of 1st Embodiment Sectional view of the cover plate unit attached to the sprinkler head of FIG. 1 is a cross-sectional view taken along the line YY in FIG. Exploded sectional view of sprinkler head, protective cap and cover plate unit Perspective view of protective cap (excluding part of outer cylinder) Bottom view of protective cap Perspective view of protective cap removal tool Sectional view of protective cap removal tool Explanatory drawing of the procedure for engaging the protective cap removal tool with the protective cap (A): Cross-sectional view of the protective cap of the second embodiment, (b): Bottom view of the protective cap of (a) Sectional drawing of the protective cap of 3rd Embodiment (sprinkler head installation state) Sectional view of conventional protective cap (with sprinkler head installed)

1st Embodiment (FIGS. 1-9)
The protective cap and protective cap removal tool of the first embodiment are applied to a sprinkler head having substantially the same configuration as the sprinkler head described in International Publication No. 2011/125169. Here, only the part related to the present invention will be described, and description of other parts will be omitted.

A sprinkler head SH shown in FIG. 1 includes a main body 1, a cylindrical member 2, a cover plate unit 3, and a protective cap 4. The protective cap 4 is inserted into the cylindrical member 2 of the sprinkler head SH. The protective cap 4 has a cylindrical shape, and includes an inner cylinder 41 that houses the main body 1 to protect it from external impacts, and an outer cylinder 42 that is fitted to the cylinder member 2.

The inner cylinder 41 accommodates the main body 1 and the deflector 6 inside. A drain hole 43 is formed in the bottom surface 41 </ b> A of the inner cylinder 41, and the drain hole 43 is formed in a three-dimensional manner by cutting out the side surface 41 </ b> B to the bottom surface 41 </ b> A of the inner cylinder 41. This suppresses the surface tension of the water and improves the water drainage. In order to further improve the water draining property, the shape of the bottom surface 41 </ b> A can be formed as an inclined surface having a downward slope toward the water draining hole 43 as indicated by a dotted line in FIG. 4.

A grip 44 that allows the protective cap 4 to be attached to and detached from the main body 1 is formed outside the bottom surface 41A. The grip portion 44 has a trifurcated shape, and its lower end protrudes from the lower end of the outer cylinder 42.

A tongue-like portion 45 is formed at the end opposite to the bottom surface 41 </ b> A so as to extend upward from the inner cylinder 41 in the figure. The tongue 45 is inserted into the opening 2 </ b> C formed in the upper end surface 21 of the cylindrical member 2, and protrudes outward from the end surface of the outer cylinder 42. In the present embodiment, a tongue-like portion 45 is inserted through every six openings 2C, and its shape is plate-like, its planar shape is substantially triangular, and has an inclined surface 45A. The tongue 45 has the function of a positioning engagement portion that positions the mounting position of the protective cap 4 with respect to the main body 1.

More specifically, a connecting portion 46 that connects the inner cylinder 41 and the outer cylinder 42 is formed between the tongue-like portions 45, 45, and the tongue-like portion 45 projects from the opening 2 </ b> C of the cylinder member 2. When inserted, the connecting portion 46, the beam portion 2F, and the support base 23 are arranged so as to overlap each other as shown in FIG. When the protective cap 4 is removed from the cylindrical member 2 in the state shown in FIG. 1, the inclined surface 45 </ b> A described above has an edge of the opening 2 </ b> C of the cylindrical member 2 when the protective tool 4 and the protective cap 4 described later are engaged and rotated. When the inclined surface 45A of the tongue 45 hits, the protective cap 4 can be moved downward along the inclined surface 45A.

The connecting portion 46 has a side surface 46A and a bottom surface 46B, and the inner cylinder 41 and the outer cylinder 42 are connected by the side surface 46A and the bottom surface 46B. 4 and 5, the side surface 46A is formed at one place with respect to one bottom surface 46B. The bottom surface 46B corresponds to the tool engaging portion in the present invention.

The side surface 46A and the bottom surface 46B of the connecting portion 46 have a function of guiding a protective cap removal tool 8 (hereinafter referred to as “removal tool 8 ”), which will be described later, to the bottom surface 46B that is a tool engagement portion. More specifically, the rear surface of the protective cap 4 (upper side in the figure) is brought into contact with the corner portion at the boundary between the side surface 46A and the bottom surface 46B with the inclined surface portion 82 which is a guide portion formed near the claw 81 of the removal tool 8 ), The claw 81 is guided and engaged with the bottom surface 46B of the connecting portion 46 adjacent to the connecting portion 46 with which the inclined surface portion 82 is in contact.

The connecting part 46 is formed to connect the inner cylinder 41 and the outer cylinder 42, and the connecting part 46 can be formed so as to fill all the space between the inner cylinder 41 and the outer cylinder 42. The outer cylinder 42 is less likely to be deformed with respect to the inner cylinder 41, and it is difficult to remove the protective cap 4 from the cylinder member 2. When the connecting portion 46 is partially formed so as to form a through space that can be penetrated from one end side to the other end side of the protective cap 4 between the inner cylinder 41 and the outer cylinder 42, the outer cylinder 42 is formed by the through space. It becomes easy to deform | transform to the inner cylinder 41 side, and it becomes easy to remove the protective cap 4 from the cylinder member 2 by this, and the outer cylinder 42 deform | transforms flexibly to the inner cylinder side.

The outer diameter of the outer cylinder 42 is formed to be substantially the same as or slightly smaller than the inner diameter of the cylindrical member 2, and can be fitted to the cylindrical member 2. By fitting the outer cylinder 42 with the cylinder member 2, it is possible to prevent the paint from adhering to the inner peripheral portion of the cylinder member 2 during the ceiling painting. The outer cylinder 42 is configured to cover the spiral groove 2 </ b> D of the cylinder member 2 when the protective cap 4 is engaged with the cylinder member 2.

In the lower part of the outer cylinder 42, an expansion part 47 having a diameter substantially the same as or larger than the outer diameter of the cylinder member 2 is formed near the bottom surface 41 </ b> A of the inner cylinder 41. The boundary between the extended portion 47 and the outer cylinder 42 is a step 47A, and the lower end of the cylindrical member 2 is in contact with the step 47A. Thereby, when filling the periphery of the hole H through which the sprinkler head SH drilled in the ceiling C is inserted with the putty, the space between the outer peripheral portion of the expansion portion 47 and the inner peripheral portion of the hole H is filled with the putty, It is possible to prevent the putty from entering and adhering to the inside of the cylindrical member 2.

The main body 80 of the removal tool 8 has a cylindrical shape as shown in FIG. 7 and can accommodate the inner cylinder 41 of the protective cap 4 therein. The outer diameter of the main body 80 is slightly smaller than the diameter of the inner peripheral portion of the outer cylinder 42 of the protective cap 4, and the removal tool 8 and the protective cap 4 are substantially in a state where the main body 80 is inserted into the protective cap 4. It becomes a coaxial state. The main body 80 is movable in the space between the inner cylinder 41 and the outer cylinder 42 of the protective cap 4.

A claw 81 that can be engaged with the bottom surface 46 </ b> B of the connecting portion 46 of the protective cap 4 is formed on one end side of the main body 80. The claw 81 is formed with a first engagement portion 81A that is in contact with the bottom surface 46B in parallel, and the second engagement portion 81B formed substantially vertically downward from the first engagement portion 81A is formed on the bottom surface 46B. It can come into contact with the end face. Thus, when the claw 81 is engaged with the bottom surface 46, the first engaging portion 81A is in contact with and engaged with the bottom surface 46B. Therefore, when the removal tool 8 is pulled downward in the figure, the protective cap 4 is removed from the cylindrical member. 2 can be pulled out. Further, since the second engaging portion 81B is in contact with the end surface of the bottom surface 46B, when the removal tool 80 is rotated leftward in the drawing, the second engaging portion 81B and the end surface of the bottom surface 46B are engaged and protected. The cap 4 and the removal tool 80 can be rotated.

In the vicinity of the claw 81, a slope portion 82 is formed as a guide portion. As described above, when the main body 80 is inserted from the lower end of the protective cap 4, the inclined surface portion 82 contacts the corner portion between the side surface 46 </ b> A and the bottom surface 46 </ b> B of the connecting portion 46 and goes to the back (upward in the drawing) of the protective cap 4. By moving, the claw 81 can be guided and engaged with the bottom surface 46B of the connecting portion 46 adjacent to the connecting portion 46 with which the slope portion 82 is in contact.

An opening 84 for connecting the grip portion 83 is formed at the end of the main body 80 opposite to the side where the claw 81 is formed. The grip portion 83 has a rod shape, and can be fixedly connected to the main body 80 by inserting a tapping screw 85 from the side surface of the main body 80 toward the grip portion 83 after being inserted into the opening 84. By installing the grip portion 83, the operator can remove the protective cap 4 installed on the sprinkler head SH from the floor without using a stepladder or a scaffold.

A partition wall 86 is formed inside the main body 80, and the end surface of the grip portion 83 can be stopped against the partition wall 86.

Next, a procedure for removing the protective cap 4 installed on the sprinkler head SH using the removal tool 8 will be described.

As shown in FIG. 1, the protective cap 4 is fitted inside the cylindrical member 2 of the sprinkler head SH. As shown by the dotted line in the figure, the space between the outer surface of the protective cap 4 and the hole H of the ceiling board C is filled with the putty 100, and the putty 100 is fixed to the outer surface of the protective cap 4.
First, the claw 81 of the removal tool 8 is inserted into the space between the inner cylinder 41 and the outer cylinder 42 from below the protective cap 4. Then, the inclined surface portion 82 formed in the vicinity of the claw 81 hits the connecting portion 46 of the protective cap 4, more specifically, the corner portion between the side surface 46A and the bottom surface 46B of the connecting portion 46, and the removal tool 8 is further attached to the protective cap 4 And the claw 81 formed in the vicinity of the slope portion 82 has a corner portion in contact with the slope portion 82 when the slope portion 82 moves along the aforementioned corner portion. It is engaged with the bottom surface 46 </ b> B of the connecting portion 46 next to the portion 46.

At this time, the first engagement surface 81A of the claw 81 is engaged in parallel with the bottom surface 46B of the connecting portion 46, and the second engagement surface 81B is in contact with the end surface of the bottom surface 46B. Here, when the removal tool 8 is rotated in the direction in which the second engagement surface 81B pushes the end surface of the bottom surface 46B, the removal tool 8 and the protective cap 4 are rotated together and fixed to the outer surface of the protective cap 4. The putty 100 is peeled off.

Next, the removal tool 8 is pulled downward, and the protective cap 4 is pulled out from the cylindrical member 2 and removed. Thereafter, the cover plate unit 3 is attached to the cylindrical member 2.

Modification 1 of the first embodiment (FIG. 8)
As a modified example of the removal tool 8 of the first embodiment described above, a strip accommodating portion 87 that can accommodate a strip when the putty 100 is peeled off from the protective cap 4 is installed in the main body 80 or the grip portion 83. It is. By installing the peeling piece accommodating portion 87, it is possible to prevent the peeling piece of the putty 100 from falling on the floor surface and soiling the floor surface. The exfoliation container 86 has a dish shape or a bowl shape, and is preferably formed from a transparent material. This makes it easier for the operator to grasp the positions of the protective cap 4 and the claw 81 when the claw 81 is engaged with the protective cap 4 while holding the grip portion 83.

Modification 2 of the first embodiment (FIG. 9)
Further, in the modification shown by the two-dot chain line in FIG. 9, a stopper 88 that engages with the lower end of the protective cap 4 is formed on the outer peripheral surface of the main body 80 of the removal tool 8. The stopper 88 is formed in a flange shape on the outer peripheral surface of the main body 80. Instead of this, it is possible to form the projections at several locations. In addition, it is possible to form a protrusion that acts in the same manner as the stopper 88 inside the protective cap 4.

Second Embodiment (FIG. 10)
Next, the second embodiment will be described. The difference between the second embodiment and the first embodiment is that the shape of the protective cap is different. In addition, the same code | symbol is attached | subjected to the location same as 1st Embodiment, and detailed description is abbreviate | omitted.

In the second embodiment, the tool engaging portion with the removal tool 8 in the protective cap 90 is formed at the lower end of the protective cap 90. The protective cap 90 shown in FIG. 10 has a cylindrical shape, and the outer peripheral portion of the protective cap 9 can be fitted into the cylindrical member 2 of the sprinkler head SH. The protective cap 90 has a partition wall 91 formed therein, and the main body 1 and the deflector 6 are accommodated in the interior above the partition wall 91. Two protrusions 92 and 92 which are tool engaging portions are formed on the inner side below the partition wall 91.

The protrusions 92 and 92 are formed at the lower end of the protective cap 90 and protrude in the central axis direction of the protective cap 90. The upper surface 92A of the protrusion 92 is engaged in parallel with the first engaging portion 81A of the claw 81 of the removal tool 8. The side surface 92B of the protrusion 92 is engageable with the second engaging portion 81B. The outer peripheral diameter of the main body 80 is slightly smaller than the inner peripheral diameter below the partition wall 91 of the protective cap 9, and when the claw 81 of the main body 80 is inserted into the inner peripheral portion below the partition wall 91 of the protective cap 9, The protective cap 9 and the removal tool 8 are substantially coaxial.

When the claw 81 of the removal tool 8 is engaged with the protrusion 92 of the protective cap 90, the protrusion 92 is formed at the lower end of the protective cap 9, so that the operator can easily recognize the protrusion 92, as in the first embodiment. The claw 81 can be easily engaged with the protrusion 92 without the slope portion 82. The partition wall 91 has a stopper function, and the partition wall 91 prevents the claw 81 from interfering with the main body 1 and the deflector 6 accommodated above the protective cap 90.

When the removal tool 8 is engaged with the protective cap 90, the claw 81 is inserted into the lower side of the protective cap 90. At that time, the claw 81 is inserted into the protective cap 90 while avoiding the protrusion 92. The claw 81 is stopped by the partition wall 91 and is prevented from moving upward. The removal tool 8 is rotated to engage the first engaging portion 81A of the claw 81 so as to be parallel to the upper surface 92A of the protrusion 92. The second engaging portion 81B is brought into contact with the side surface 92B of the protrusion 92. Here, when the second engagement surface 81B of the removal tool 8 is rotated in the direction in which the side surface 92B is pushed, the removal tool 8 and the protective cap 90 rotate together and are fixed to the outer surface of the protective cap 90. The putty 100 can be peeled off.

Thereafter, when the removal tool 8 is pulled downward, the first engaging portion 81A is engaged with the upper surface 92A of the projection 92, so that the protective cap 90 can be pulled out from the cylindrical member 2 and removed.

Third Embodiment (FIG. 11)
Next, a third embodiment will be described. The difference between the third embodiment and the first embodiment is that a spiral groove is formed in the outer peripheral portion of the extended portion 47 that is the outer surface of the protective cap. In addition, the same code | symbol is attached | subjected to the location same as 1st Embodiment, and detailed description is abbreviate | omitted.

In the third embodiment shown in FIG. 11, the spiral groove 97 is formed on the outer peripheral portion of the extended portion 96 of the protective cap 95. As a result, when the protective cap 95 is removed from the cylindrical portion 2 of the sprinkler head SH, even if the putty 100 is fixed to the spiral groove 97 of the extended portion 96 of the protective cap 95, the removal tool 8 and the protective cap 95 are rotated. Thus, the putty 100 can be peeled off from the surface of the spiral groove 97. Further, when the removal tool 8 and the protective cap 95 are rotated by the spiral groove 97, the protective cap 95 rotates downward along the spiral groove 101 on the putty 100 side that is solidified to the surface shape of the spiral groove 97 of the protective cap 95. The protective cap 95 can be moved and removed from the cylindrical portion 2 of the sprinkler head SH.

1 Body
2 Tube member
3 Cover plate unit
4, 90, 95 Protective cap
5 Thermal decomposition section
6 Deflector
8 Removal tool 11 Nozzle
41 inner cylinder
42 outer cylinder
43 Water drain hole
44 Holding part of protective cap
45 Tongue
46 connecting part
46B Bottom of connecting part (tool locking part)
47, 96 Extension
80 Body of removal tool
81 nails
81A 1st engaging part 81B 2nd engaging part 82 Slope part (guide part)
83 Gripping part of removal tool
86, 91 Bulkhead 87 Stripping container
88 stopper
97 Spiral Groove
SH Sprinkler head

Claims (9)

A sprinkler head protective cap installed detachably on a sprinkler head comprising a sprinkler head main body connected to a water supply pipe on the back of the ceiling, and a cylindrical member installed outside the sprinkler head main body,
An inner cylinder that houses the sprinkler head body;
An outer cylinder that is installed outside the inner cylinder and that fits into the cylindrical member;
A protective cap for a sprinkler head, comprising: a plurality of connecting portions that connect the inner cylinder and the outer cylinder and engage with a protective cap removal tool that removes the protective cap. The sprinkler head protective cap according to claim 1, wherein the connecting portion has a bottom surface that connects the inner cylinder and the outer cylinder in their radial direction. The protective cap for sprinkler heads according to claim 1 or 2, wherein there is a through space penetrating from one end side to the other end side of the protective cap between adjacent connecting portions. The protective cap for a sprinkler head according to any one of claims 1 to 3, wherein the outer cylinder has an extended portion having an outer diameter equal to or larger than an outer diameter of a cylindrical member of the sprinkler head. 5. The protective cap for a sprinkler head according to claim 4, wherein the extended portion has a spiral groove on an outer peripheral surface thereof. A protective cap removal tool for removing the protective cap according to claim 1,
A cylindrical main body that can be inserted between the inner cylinder and the outer cylinder of the protective cap;
A claw provided on one end of the main body and engaged with the connecting portion of the protective cap;
A slope portion provided between the nail and one end of the main body, inducing a movement of the nail between the adjacent connecting portions in contact with the connecting portion of the protective cap;
A protective cap removal tool having a grip portion provided on the other end side of the main body. The claw has a first engagement portion that engages with the bottom surface of the connection portion, and a second engagement portion that engages with an end of the bottom surface of the connection portion. The protective cap removal tool according to claim 6 or 7, wherein the main body has a stopper that allows the protective cap and the protective cap removal tool to be fitted to a predetermined position. The protective cap removal tool according to any one of claims 6 to 8, wherein the main body or the gripping portion has a dish-like or arm-like peeled portion accommodating portion.

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