JP2017156987A - Smoke detector cover removal jig and working method using the jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a smoke detector cover removal jig which can easily remove a smoke detector cover while keeping a simple and light structure of the smoke detector cover.SOLUTION: A jig 10 has a rod-shaped portion 16 provided with a grip portion 22 at one end 16; a jig body 18 which is connected to the other end 16b of the rod-shaped portion 16, and covers at least a part of a cover; and a holding portion 20 which is provided in the inside of the jig body 18, and holds the cover. At least one of the jig body 18 and the holding portion 20 is made from an elastic member. When the jig body 18 covers the cover, the elastic member deforms outward of the cover to apply elastic force on the elastic member, and the holding portion 20 is closely contacted with an outer periphery of a side wall portion of the cover to hold the cover.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a jig for removing a cover for protecting a smoke detector and a working method using the jig.

  Conventionally, when renovation work is carried out in a building, the existing smoke detector is covered with a cover to prevent erroneous detection of the smoke detector based on dust generated during construction.

  Patent Document 1 below discloses a cover that is detachably attached so as to cover the smoke detector so that the smoke detector does not operate due to dust scattered during construction of a building. An inner surface of the cover has a close contact portion that is in close contact with the smoke detector and stably generates a supporting action. In addition, an iron plate is arranged on the lower surface of the cover, and the cover can be removed from the smoke detector by attracting a magnet provided at the tip of the removal jig to the iron plate and pulling the cover out of the smoke detector. .

Japanese Utility Model Publication No. 62-158593

  In the prior art, an iron plate is provided on the smoke detector cover, and the cover is removed from the smoke detector by adsorbing the iron plate and a magnet attached to the tip of the removal jig. Certainly, if the adsorption force acting between the removal jig and the cover is larger than the holding force acting between the cover and the smoke detector, the removal jig can remove the cover from the smoke detector. .

  However, in order to generate the attractive force, the cover must be provided with an iron plate or a magnet, which increases the weight of the cover and may cause the cover to be removed from the smoke detector during construction of the building. is there. Also, if the cover that has increased in weight falls and comes into contact with a worker under construction, the damage will also increase. Furthermore, since it is necessary to securely attach an iron plate or a magnet to the cover, the number of parts increases and the number of man-hours also increases, resulting in an increase in manufacturing cost.

  The present invention provides a smoke detector cover removing jig that can easily remove the smoke detector cover while maintaining a simple and lightweight structure of the smoke detector cover, and a working method using the jig. It is in.

  The present invention provides a smoke detector cover removal jig for removing a cover that covers a smoke detector, a rod-like portion provided with a grip portion at one end thereof, connected to the other end of the rod-like portion, and at least a part of the cover being A jig main body for covering, and a gripping portion provided inside the jig main body for gripping the cover, wherein at least one of the jig main body and the gripping portion is made of an elastic member, and the jig main body When the cover covers the cover, the elastic member is deformed to the outside of the cover, so that an elastic force is applied to the elastic member, and the gripping portion comes into close contact with the outer periphery of the side wall portion of the cover. It is characterized by holding.

  Moreover, when the said holding part is not in contact with the said side wall part, it is suitable for the inner periphery of the said holding part to be located inside the outer periphery in the contact | adherence area | region of the said side wall part.

  In addition, it is preferable that the amount of deformation of the elastic member toward the outside of the cover increases as the jig body houses the cover therein.

  Further, it is preferable that the grip portion is made of an elastic member, and the jig main body is not an elastic member but is compressed outward of the cover when contacting the side wall portion.

  Further, the jig body is made of an elastic member, and the jig body is not an elastic member, and can be bent outward from the cover when contacting the side wall portion.

  Moreover, it is preferable that the jig body is formed so as to surround the outer periphery of the side wall portion over the entire circumference, and the grip portion is provided on an inner peripheral surface of the jig body.

  Further, it is preferable that the grip portion is made of an elastic member made of porous sponge, rubber, or urethane foam, and is formed so as to surround the outer periphery of the side wall portion over the entire periphery.

  In addition, as the jig body is raised toward the ceiling surface on which the smoke detector is installed, the inner peripheral diameter of the grip portion is relatively larger than the outer diameter of the side wall portion in the close contact region. It is preferable that it is formed so as to become gradually smaller.

  Further, it is preferable that the jig body and the cover have the same shape.

  Further, it is preferable that the jig main body includes an attachment member that is integrally connected to the smoke detector and attaches a cover to the smoke detector, and the jig main body and the attachment member are detachably fixed to the rod-like portion.

  Another invention is a work method using the smoke detector cover removal jig according to claim 1 during the construction of a building, and the step of attaching the cover so as to cover the smoke detector, and the step of attaching the cover The method includes the steps of performing a construction for generating dust, and the step of removing the cover from the smoke detector using the jig after the step of the dust generation construction.

  The jig further includes an attachment member that is integrally connected to the jig body and attaches the cover to the smoke detector, and the jig body and the attachment member can be attached to and detached from the rod-shaped portion. The cover can be attached to the smoke detector using the jig during the cover attaching process.

  Further, the jig body and the mounting member are integrally connected and fixed to the rod-shaped portion so as to be detachable, and the integral member composed of the jig body and the mounting member is oriented with respect to the rod-shaped portion. By changing and attaching, it can be changed into a form that can be used as the jig body and a form that can be used as the attachment member, and the attachment member can be used between the cover attaching step and the cover removing step. The process can be changed from a form usable as a form usable as the jig body.

  According to the smoke detector cover removing jig and the working method using the jig of the present invention, the smoke detector cover can be easily removed while maintaining a simple and lightweight structure of the smoke detector cover.

It is a figure which shows the structure of the smoke detector cover removal jig | tool which concerns on this embodiment. It is a figure which shows the structure of the smoke detector and cover which concern on this embodiment. It is a figure which shows the state attached so that a cover might cover a smoke detector. It is a figure which shows a mode that a cover is removed from a smoke detector using a smoke detector cover removal jig | tool. It is a figure which shows an example of the smoke detector cover removal jig | tool of another form. It is a flowchart which shows the operation | work process using the smoke detector cover removal jig | tool of this embodiment.

  Hereinafter, embodiments of a smoke detector cover removing jig according to the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a configuration of a smoke detector cover removal jig (hereinafter simply referred to as a jig) 10 according to the present embodiment, and FIG. 2 is a diagram showing a configuration of a smoke detector 12 and a cover 14. FIG. 3 is a view showing a state where the cover 14 is attached so as to cover the smoke detector 12. The smoke sensor 12 shown in FIGS. 2 and 3 is a general exposure type sensor. However, the present invention is not limited to this configuration, and the smoke sensor 12 is an embedded type sensor. Also good.

  The jig 10 is a tool for removing the cover 14 attached to the smoke detector 12 during a new construction or renovation of a building, and is used by an operator. The jig 10 includes a rod-shaped portion 16 held by an operator, a jig main body 18 connected to the rod-shaped portion 16, and a gripping portion 20 provided on the jig main body 18 and gripping the cover 14.

  The rod-shaped portion 16 is provided with a grip portion 22 at one end 16 a thereof, and an operator operates the jig 10 by gripping the grip portion 22. A jig body 18 is connected to the other end 16 b of the rod-like portion 16. Specifically, the shaft of the rod-like portion 16 and the axis of the jig body 18 are connected so as to be on the same line. The rod-shaped portion 16 has a length that allows the jig main body 18 to reach the ceiling surface 24 (shown in FIG. 2) when an operator operates the jig 10 while grasping the grip portion 22, for example, 2 〜 3m. However, this embodiment is not limited to this, and the rod-like portion 16 may be less than 2 m or more than 3 m as long as the jig body 18 reaches the ceiling surface 24. Moreover, the rod-shaped part 16 may have a telescopic or lattice mechanism such as a telescopic or lattice structure. Furthermore, the rod-shaped part 16 can also have a universal joint in which the angle of the jig body 18 can be changed.

  The jig main body 18 has a U-shaped cup shape and is formed so that at least a part of the cover 14 can be accommodated therein. A grip portion 20 is provided inside the jig body 18, and the grip portion 20 is in close contact with the outer periphery of the cover 14 to grip the cover 14. The detailed configuration of the grip 20 will be described later.

  In the present embodiment, a portion formed by mutually opposing sides of the U-shaped section of the jig body 18 is simply referred to as a side wall portion 18a. In addition, a surface formed by connecting those sides and closing one end of the side wall portion 18a, in other words, a surface orthogonal to the side wall portion 18a is simply referred to as a closing surface 18b. The other end 16b of the rod-like portion 16 is connected to the closing surface 18b. The surface that is the other end of the side wall portion 18a and is formed at the tip of the jig body 18 is simply referred to as a tip surface 18c.

  The configuration of the cover 14 will be described with reference to FIGS. The cover 14 is formed so as to cover the smoke detector 12 installed on the ceiling surface 24 of the building. Specifically, the cover 14 has a U-shaped cup shape, and is formed so that the smoke detector 12 can be accommodated inside the cup shape. The cover 14 is made of a lightweight resin, such as PET resin, and has a thickness of 0.5 mm, for example. Further, the cover 14 is formed to be transparent so that the smoke detector 12 can be visually recognized when attached to the smoke detector 12. A colored sticker is attached to the closing surface 14b of the cover 14 to prevent forgetting to remove it.

  In the present embodiment, a portion formed by mutually opposing sides of the U-shaped section of the cover 14 is simply referred to as a side wall portion 14a. Further, a surface formed by connecting these sides and closing one end of the side wall portion 14a, in other words, a surface orthogonal to the side wall portion 14a is simply referred to as a closing surface 14b. And the surface formed in the other end of the side wall part 14a, ie, the open | released end, is only described as the front end surface 14c. The tip surface 14 c can contact the ceiling surface 24 when the cover 14 is attached to the smoke detector 12. In this case, in order to prevent the cover 14 from falling, it is preferable to provide a seal or an adhesive on the distal end surface 14c.

  A grip portion 26 is provided inside the cover 14, and the grip portion 26 is in close contact with the outer periphery of the smoke detector 12 so that the cover 14 is attached to the smoke detector 12. The grip part 26 is provided on the inner peripheral surface of the side wall part 14 a so as to surround the outer periphery of the body part 12 a of the smoke detector 12. Moreover, the holding part 26 consists of an elastic member, for example, is a porous sponge, rubber | gum, or urethane foam. In this embodiment, EPDM sponge is used. As shown in FIG. 2, the outer diameter R1 of the body 12a of the smoke detector 12 is larger than the inner diameter R2 of the gripping part 26 (for example, R1 is 105 mm and R2 is 98 mm). With this configuration, when the cover 14 is attached to the smoke detector 12, the cover 14 is accommodated so as to press fit the outer peripheral surface of the body 12 a of the smoke detector 12. At this time, the gripping portion 26 is compressed and deformed outward of the cover 14, whereby an elastic force is applied to the gripping portion 26. Thereby, as shown in FIG. 3, the gripping portion 26 is in close contact with the outer periphery of the trunk portion 12 a of the smoke detector 12 while being compressed, so that the cover 14 can be securely attached to the smoke detector 12. . In the present embodiment, the outside of the cover 14 means the outside in the radial direction of the side wall portion 14a of the cover 14.

 In the jig 10 according to the present invention, the grip portion 20 is in close contact with the outer periphery of the side wall portion 14 a of the cover 14 to grip the cover 14. Specifically, the gripping part 20 is made of an elastic member, and when the jig body 18 covers the cover 14, the gripping part 20 is deformed outward of the cover 14, whereby an elastic force is applied to the elastic member, The grip portion 20 is in close contact with the outer periphery of the side wall portion 14 a of the cover 14 and grips the cover 14. The elastic member of the grip part 20 is, for example, a porous sponge, rubber, or urethane foam. In the present embodiment, the inner peripheral diameter L1 of the grip portion 20 is smaller than the outer diameter L2 of the side wall portion 14a of the cover 14 (shown in FIG. 4). With this configuration, when the cover 14 is removed from the smoke detector 12, the jig main body 18 is accommodated so as to press-fit the cover 14. At this time, the gripping part 20 is compressed and deformed outward of the cover 14, whereby an elastic force is applied to the gripping part 20. Thereby, the gripping part 20 is in close contact with the outer periphery of the side wall part 14a of the cover 14 while being compressed, and the cover 14 is gripped. If the jig 10 is lowered as it is with the cover 14 gripped, the jig 10 can remove the gripped cover 14 from the smoke detector 12.

  In the jig 10 of the present invention, as the jig body 18 is raised toward the ceiling surface 24, the inner peripheral diameter L1 of the gripping portion 20 is increased from the side wall portion 14a in the close contact region between the gripping portion 20 and the side wall portion 14a. It is formed so as to be smaller than the diameter L2. With this configuration, as the jig body 18 is raised toward the ceiling surface 24, more elastic force is applied to the grip portion 20, and the cover 14 can be securely gripped.

  In the present embodiment, this is realized by forming the side wall portion 14a of the cover 14 into a tapered shape that gradually spreads from the closing surface 14b toward the distal end surface 14c. In this configuration, the inner diameter L1 of the grip 20 is constant from the upper end to the lower end, but the outer diameter L2 of the side wall 14a increases toward the tip surface 14c. Therefore, as the jig body 18 is raised, the inner diameter L1 of the gripping portion 20 is gradually smaller than the outer diameter L2 of the side wall 14a in the close contact region between the gripping portion 20 and the side wall portion 14a. Therefore, the gripping portion 20 has a stronger compressive force toward the radially inner side of the side wall portion 14a of the cover 14. As a result, the pulling force for pulling out the jig main body 18 from the cover 14 becomes larger than the pulling force for pulling out the cover 14 from the smoke detector 12, so that the jig 10 smokes the cover 14 by lowering the jig 10 as it is. It can be reliably removed from the sensor 12.

  In the present embodiment, the side wall portion 14a of the cover 14 has been described as having a tapered shape that gradually widens from the closing surface 14b toward the front end surface 14c, but the present invention is not limited to this configuration. The more the jig 10 tries to accommodate the cover 14 in the jig body 18, the greater the amount of deformation of the gripping portion 20 outward of the cover 14 in the close contact region between the gripping portion 20 and the side wall portion 14 a. Any configuration is acceptable. With this configuration, as the jig body 18 is raised toward the ceiling surface 24, more elastic force is applied to the grip portion 20. As a specific configuration, a taper shape in which the diameter decreases as the inner periphery of the gripping portion 20 approaches the closing surface 18b can be used. In this case, the shape of the side wall portion 14a of the cover 14 is not limited to the tapered shape of the present embodiment, and may be a cylindrical shape. The shape of the side wall 18a of the jig body 18 may be the same tapered shape as the cover 14 or a cylindrical shape.

  Next, a procedure for removing the cover 14 from the smoke detector 12 using the jig 10 of the present embodiment will be described with reference to FIG. This procedure is performed by an operator (not shown) holding the grip portion 22 of the jig 10 and moving the jig 10 in a direction perpendicular to the ceiling surface 24. In addition, about the member shown by this figure, in order to demonstrate a procedure easily, the member demonstrated in FIGS. 1-3 is typically represented. Further, before the removal work, there are a process of attaching the cover 14 to the smoke detector 12 and a process of performing dust generation after that in the construction of the building.

  (A) First, the jig 10 is brought close to the ceiling surface 24 so as to cover the cover 14 with the jig body 18. (B) Then, by lifting the grip portion 22 and pushing the jig main body 18 further toward the ceiling surface 24, the grip portion 20 is compressed and tightly grips the cover 14. Thereby, the jig | tool main body 18 and the cover 14 are connected reliably. (C) Thereafter, the cover 14 can be removed from the smoke alarm 12 by lowering the grip portion 22 and pulling the jig body 18 downward in the vertical direction.

  In the present embodiment, the jig body 18 has the same shape as the cover 14. However, the present invention is not limited to this configuration, and if the jig body 18 has a structure that supports the grip portion 20, the jig body 18 has a shape that covers at least a part of the outer periphery of the cover 14. Can do. For example, the grip part 20 may be formed so as to surround the outer periphery of the side wall part 14a of the cover 14 over the entire circumference, and the jig body 18 may be configured to support the grip part 20 with an interval in the circumferential direction. .

  In the present embodiment, the case where the grip 20 is formed so as to surround the outer periphery of the side wall 14a of the cover 14 has been described, but the present invention is not limited to this configuration. It can also be configured such that the grip portion 20 is in close contact with the side wall portion 14a at at least two locations. In this case, it is a condition that each grip part 20 is located inside the outer periphery in the contact area of the side wall part 14a. For example, like the jig 10 schematically shown in FIG. 4, the jig body 10 is simply U-shaped, and two gripping portions 20 are provided so as to face the inside thereof. According to this structure, before the holding part 20 contacts the side wall part 14a, the two holding parts 20 are located inside the outer periphery in the close contact region of the side wall part 14a. Therefore, when the grip portion 20 and the side wall portion 14a are in close contact with each other, the grip portion 20 is compressed and the cover 14 can be securely gripped. In addition, it is not always necessary to provide the grip portion 20 at two positions facing each other at 180 degrees, and the three grip portions 20 may be arranged at positions 120 degrees apart from each other. Also in this configuration, if the three gripping portions 20 are positioned on the inner side of the outer periphery in the close contact region of the side wall portion 14a, the gripping portion 20 is compressed when the gripping portion 20 and the side wall portion 14a are in close contact with each other. It can be securely gripped.

  In the present embodiment, the case where the grip 20 is an elastic member has been described. However, the present invention is not limited to this configuration. The jig body 18 may be elastically deformed, and the grip portion 20 and the jig body 18 may be elastically deformed. When the jig body 18 is an elastic member, when the grip portion 20 comes into contact with the side wall portion 14a, the elastic member bends outward to give an inward elastic force. The cover 14 can be gripped through the gripping portion 20, in other words, the surface in contact with the cover 14. For example, elastic deformation can be caused by forming at least a part of the jig body 18 as a spring structure (plate spring).

  Furthermore, although the jig | tool 10 of this embodiment demonstrated the case where it uses when removing the cover 14 from the smoke detector 12, this invention is not limited to this structure, When attaching the cover 14 to the smoke detector 12 Can also be used. When mounting, it is preferable to use another member instead of the jig body 18. The jig 30 having this configuration will be described with reference to FIG. In addition, the same code | symbol is attached | subjected about the member demonstrated in the said embodiment, and detailed description is abbreviate | omitted.

  The jig 30 includes a rod-shaped portion 32 held by an operator, and a jig body 18 and an attachment member 34 connected to the rod-shaped portion 32. A flange portion 36 is provided at the end 32 a of the rod-like portion 32, and a male screw is formed from the flange portion 36 toward the tip.

  The jig body 18 and the mounting member 34 have the same shape, and are integrally connected with their open ends in opposite directions. By inserting the male screw at the end 32a of the rod-like portion 32 through the hole 38 formed in these connection regions and screwing the nut 40 into the male screw, the rod-like portion 32, the jig body 18 and the mounting member 34 can be attached and detached. Fixed to.

  The attachment member 34 has the same shape as the cover 14 and the jig body 18 as described above. However, the attachment member 34 has no member corresponding to the gripping portion 26 of the cover 14 and the gripping portion 20 of the jig body 18. Therefore, even if the cover 14 is accommodated inside the attachment member 34, the attachment member 34 is in close contact with the cover 14 and is not securely gripped. With this configuration, the attachment member 34 can attach the cover 14 to the smoke detector 12 by covering the smoke detector 12 while accommodating at least a part of the cover 14 therein.

  In the jig 30 of this embodiment, the jig main body 18 and the mounting member 34 are removed from the rod-shaped portion 32, and the jig main body 18 and the mounting member 34 are oriented as shown in FIGS. 5 (a) and 5 (b). By alternately changing, the attachment and removal of the cover 14 can be used properly. Specifically, the nut 40 is removed from the male screw, the jig body 18 and the mounting member 34 are removed from the rod-shaped portion 32, and the nut 40 is screwed by passing the male screw of the rod-shaped portion 32 through the hole 38 in the upside down direction. That is, in the state of (a), the jig 30 is a form used when removing the cover 14, and in the state of (b), the jig 30 is a form used when attaching the cover 14. Thus, the cost can be reduced by integrating the members for attachment and removal.

  Next, a method of attaching and removing the cover 14 from the smoke detector 12 using the jig 30 of this embodiment will be described with reference to FIG. This working method is performed by the operator holding the grip portion 22 of the jig 10 and moving the jig 10 in a direction perpendicular to the ceiling surface 24. In addition, at the time of start, it is set as the form used when attaching the cover 14, ie, the form in which the open end of the attachment member 34 is set upward.

  First, in step S <b> 01, the cover 14 is accommodated inside the attachment member 34. Specifically, the attachment member 34 is mounted on the jig 30 so that the open end thereof faces the ceiling surface 24, and the cover 14 is placed inside the attachment member 34 from the open end. In step S02, the cover 14 is attached so as to cover the smoke detector 12. Specifically, the jig 30 is brought close to the ceiling surface 24 so as to cover the smoke detector 12 with the cover 14, the grip portion 22 is raised, and the attachment member 34 is further pushed into the ceiling surface 24. As a result, the grip portion 26 of the cover 14 is compressed against the outer periphery of the smoke detector 12 and is in close contact with the trunk portion 12 a of the smoke detector 12, so that the cover 14 can be attached to the smoke detector 12.

  In step S03, a construction for generating dust is performed.

  After the construction for generating dust is completed, in step S04, the open end of the jig body 18 is set upward. Specifically, the jig body 18 is mounted on the jig 30 so that the open end of the jig body 18 faces the ceiling surface 24, and the form usable as the attachment member 34 in step S02 is changed to the form usable as the jig body 18. And change. Note that the order of step S03 and step S04 may be reversed.

  Finally, in step S05, the cover 14 is removed from the smoke detector 12. Specifically, the jig 30 is brought close to the ceiling surface 24 so as to cover the cover 14 with the jig body 18. Then, by lifting the grip portion 22 and pushing the jig body 18 further toward the ceiling surface 24, the grip portion 20 is compressed and tightly grips the cover 14. Thereby, the jig body 18 and the cover 14 are securely connected, and then the cover 14 can be removed from the smoke alarm 12 by lowering the grip 22 and pulling the jig body 18 downward in the vertical direction. it can.

  In this embodiment, the case where the jig body 18 and the attachment member 34 are integrally connected and detachably fixed to the rod-shaped portion 32 has been described, but the present invention is not limited to this configuration. As long as the cover 14 can be attached to and detached from the smoke detector 12 with the jig 30, the jig body 18 and the attachment member 34 may be separately fixed to the rod-shaped portion 32. Alternatively, each of the jig body 18 and the attachment member 34 may be detachable from the rod-shaped portion 32.

  10, 30 Smoke detector cover removal jig, 12 Smoke detector, 14 cover, 16, 32 Bar-shaped part, 18 Jig body, 20, 26 Gripping part, 22 Gripping part, 24 Ceiling surface, 34 Mounting member, 36 Flange Part, 38 holes, 40 nuts.

Claims (13)

In the smoke detector cover removal jig to remove the cover covering the smoke detector,
A rod-shaped part provided with a grip part at one end;
A jig body connected to the other end of the rod-shaped portion and covering at least a part of the cover;
A grip portion provided inside the jig body and gripping the cover;
Have
At least one of the jig body and the grip portion is made of an elastic member,
When the jig body covers the cover, the elastic member is deformed outwardly of the cover, whereby an elastic force is applied to the elastic member, and the gripping portion is in close contact with the outer periphery of the side wall portion of the cover. And grip the cover,
A smoke detector cover removal jig. The smoke detector cover removing jig according to claim 1,
When the grip portion is not in contact with the side wall portion, the inner periphery of the grip portion is located on the inner side of the outer periphery in the adhesion region of the side wall portion.
A smoke detector cover removal jig. The smoke detector cover removing jig according to claim 1 or 2,
As the jig body accommodates the cover therein, the amount of deformation of the elastic member toward the outside of the cover is increased.
A smoke detector cover removal jig. In the smoke detector cover removal jig according to any one of claims 1 to 3,
The grip portion is made of an elastic member, and the jig body is not an elastic member, and is compressed outward of the cover when contacting the side wall portion.
A smoke detector cover removal jig. The smoke detector cover removing jig according to any one of claims 1 to 4,
The jig body is made of an elastic member, and the gripping part is not an elastic member, and bends outward when contacting the side wall part.
A smoke detector cover removal jig. The smoke detector cover removing jig according to any one of claims 1 to 4,
The jig body is formed so as to surround the outer periphery of the side wall portion over the entire circumference,
The grip portion is provided on the inner peripheral surface of the jig body.
A smoke detector cover removal jig. The smoke detector cover removing jig according to claim 6,
The grip portion is made of an elastic member made of porous sponge, rubber, or urethane foam, and is formed so as to surround the outer periphery of the side wall portion over the entire circumference.
A smoke detector cover removal jig. The smoke detector cover removing jig according to claim 6 or 7,
As the jig main body is raised toward the ceiling surface where the smoke detector is installed, the inner diameter of the grip portion gradually increases relative to the outer diameter of the side wall portion in the contact area. Formed to be smaller,
A smoke detector cover removal jig. The smoke detector cover removing jig according to claim 8,
The jig body and the cover have the same shape,
A smoke detector cover removal jig. In the smoke detector cover removal jig according to any one of claims 1 to 9,
An attachment member that is integrally connected to the jig body and attaches a cover to the smoke detector;
The jig body and the mounting member are detachably fixed to the rod-shaped portion.
A smoke detector cover removal jig. In the work method using the smoke detector cover removal jig according to claim 1 during construction of the building,
Attaching the cover so as to cover the smoke detector;
After the cover installation process, a process of carrying out construction that generates dust,
A step of removing the cover from the smoke detector using the jig after the dust generation work step;
A working method characterized by comprising: The working method according to claim 11,
The jig further includes:
An attachment member that is connected to the jig body and attaches the cover to the smoke detector;
The jig body and the mounting member are fixed to the rod-shaped portion,
At the time of attaching the cover, the cover is attached to the smoke detector using the jig.
A working method characterized by that. The working method according to claim 12,
The jig main body and the attachment member are integrally connected and fixed to the rod-shaped portion in a removable manner.
By changing the orientation of the integrated member composed of the jig body and the mounting member to the rod-like portion, the shape can be changed to a form usable as the jig body and a form usable as the mounting member. Is possible,
An operation method comprising a step of changing from a form usable as the attachment member to a form usable as the jig body between the cover attaching step and the cover removing step.

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