JP2012159156A - Closing tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a load on a worker engaged in closing work of a through opening formed in a wall of a building or the like, and surely close the through opening in a stable state for a long period.SOLUTION: A closing tool includes: a tubular member 101 opened at both ends and allowing flowing of a gas between the opening 101a on one end side and the opening 101b on the other end side; a fall-off prevention member 102 provided at the one end of the tubular member 101 and having a bag shape expandable and contractible with entrance and exit of the gas through the tubular member 101; and a sealing member 103 installable to the other end of the tubular member 101, blocking off entrance and exit of the gas through the tubular member 101 in a state of being installed to the tubular member 101, and larger in the dimension in the diameter direction of the tubular member 101 than the opening diameter of an opening targeted for closing.

Description

  The present invention relates to an obturator that closes a through-type opening that penetrates a wall surface.

  An opening (hereinafter referred to as “through-type opening”) provided to penetrate the wall of the building in order to cope with future wiring expansion, etc. prevents foreign matter from entering the building from the through-type opening. Need to be blocked. If left without such a through-type opening, rainwater flows into the building from the through-type opening, small animals or insects enter the building from the through-type opening, In some cases, a bee nesting in a through-type opening.

  In order to prevent the inflow of rainwater into the building, penetration of small animals and insects, and bee nesting in the through-type openings, wiring of the through-type openings has been expanded. It was necessary to close the through-type opening until it was used. Specifically, for example, using a technique for closing the through-type opening by filling the through-type opening with clay or a rubber plug having a shape in which the side peripheral surface expands in the axial direction. There was a technique for closing the through-type opening.

  Further, specifically, for example, a pipe insertion hole obturator in which an outer bent flange portion is formed at one end of the pipe inscribed insertion pipe, on the outer peripheral surface of the insertion pipe of the obturator main body of the pipe insertion hole obturator. The multiple rows of non-slip projection pieces formed by projecting a large number of tongue-like projection pieces inclined toward the outer curved flange portion side in a row along the longitudinal direction of the insertion tube are the outer circumference of the insertion tube. There has been a technique in which each is divided in an appropriate division width (see, for example, Patent Document 1 below).

Japanese Utility Model Publication No. 58-15085

  However, among the conventional techniques described above, for example, the conventional method of closing the through-type opening by filling the through-type opening with clay or the like takes time to complete the closing operation and is inferior in workability. There was a problem. When the penetrating opening to be closed is provided at a high place, the operator who performs the closing work performs the closing work on a scaffold with a limited area, so it takes time to complete the closing work. As a result, there is a problem that the fatigue of the operator increases.

  Of the above-described conventional techniques, for example, the conventional method of closing the through-type opening by filling the through-type opening with clay or the like must work from the outside and inside of the wall surface in the building. Therefore, a special method, such as using an aerial work vehicle, must be taken when the through-type opening at a high place such as a high floor is closed from the outside of the building. For this reason, workers must pay much attention to preventing the fall of clay and tools used for blockage work, and the worker's mental and physical fatigue is significant compared to work performed on the ground. There was a problem. Furthermore, since the aerial work vehicle is driven, there is a problem that the cost for the work of closing the through opening is large.

  Of the conventional techniques described above, for example, the method of closing the through-type opening using a rubber plug must use a rubber plug suitable for various sizes of through-type openings, There has been a problem that the work for creating a rubber plug in accordance with the size of the through-type opening is complicated. Furthermore, among the conventional techniques described above, the method of closing the through-type opening using a rubber plug is such that the rubber plug used to close the through-type opening is dropped from the through-type opening due to vibration of the building or the like. There was a problem that there might be.

  In addition, any of the conventional techniques including the above-described Patent Document 1 has a tongue-like shape provided on the outer peripheral surface of the pipe inscribed insertion tube to prevent the penetration of the pipe inscribed insertion tube from passing through the opening. Because it depends on the friction between the projecting piece and the inner peripheral surface of the through-type opening, and the tongue-shaped projecting piece is provided only on a part of the outer peripheral surface of the pipe inscribed insertion tube, the through-type opening There is a risk that the pipe inscribed insertion pipe may fall out of the through-type opening due to the material of the part or the vibration of the building, and there is a problem that the reliability of the closing and the safety after the closing work are inferior.

  In order to eliminate the above-mentioned problems caused by the prior art, the present invention aims to reduce the burden on the operator for closing the through-type opening provided on the wall of the building and to stabilize the through-type opening over a long period of time. It is an object of the present invention to provide an obturator that can be reliably occluded in a state where it has been removed.

  In order to solve the above-described problems and achieve the object, the obturator according to the present invention is tubular in which both ends are open and gas can flow between the opening on one end and the opening on the other end. A member, an outlet preventing member that is provided at one end of the tubular member and that can be expanded and contracted by gas entering and exiting through the tubular member, and the other end of the tubular member, the tubular member being attachable to the tubular member A sealing member that blocks gas from entering and exiting through the tubular member in a state of being attached to the member, and has a dimension in the diameter direction of the tubular member that is larger than the opening diameter of the opening to be closed. It is characterized by.

  In the obturator according to the present invention, in the above invention, the tubular member includes a first screw thread provided on the other end side, and the sealing member is screwed to the first screw thread. A second thread capable of being mounted on the other end of the tubular member by screwing the second thread into the first thread;

  According to the obturator according to the present invention, it is possible to reduce the burden on the operator involved in the work of closing the through-type opening provided in the wall of the building and to reliably close the through-type opening in a stable state over a long period of time. There is an effect that can be done.

It is explanatory drawing which shows the structure of the obturator of embodiment concerning this invention. It is explanatory drawing (the 1) which shows the usage example of the obturator of embodiment concerning this invention. It is explanatory drawing (the 2) which shows the usage example of the obturator of embodiment concerning this invention. It is explanatory drawing (the 3) which shows the usage example of the obturator of embodiment concerning this invention.

  Hereinafter, preferred embodiments of an obturator according to the present invention will be described in detail with reference to the accompanying drawings.

(Configuration of obturator)
First, the configuration of the obturator according to the embodiment of the present invention will be described. FIG. 1 is an explanatory view showing a configuration of an obturator according to an embodiment of the present invention. FIG. 1 shows an obturator according to an embodiment of the present invention when not in use.

  In FIG. 1, an obturator 100 according to an embodiment of the present invention includes a tubular member 101, a removal prevention member 102, and a sealing member 103. The tubular member 101 has a tubular shape with both ends opened. The tubular member 101 allows gas (air) to flow between the opening 101a on one end side and the opening 101b on the other end side. The air that flows in from the opening 101 a on one end side of the tubular member 101 flows out of the tubular member 101 from the opening 101 b on the other end side via the tubular member 101. The air flowing in from the opening 101 b on the other end side of the tubular member 101 flows out of the tubular member 101 from the opening 101 a on the one end side via the tubular member 101.

  On the outer peripheral surface of the tubular member 101, a screw thread (first screw thread) is provided at least at a part on the other end side (the opening 101b side on the other end side). The thread may be provided over the entire outer peripheral surface of the tubular member 101. A piston 104 is provided inside the tubular member 101. The piston 104 has an outer diameter that is substantially the same as the inner diameter of the tubular member 101, and is movable along the axial direction of the tubular member 101 inside the tubular member 101. One end of a piston rod 105 is connected to the piston 104. A gripping member 106 is provided at the other end of the piston rod 105.

  The gripping member 106 has a substantially cylindrical shape with an outer diameter larger than the inner diameter of the tubular member 101. By making the outer diameter of the gripping member 106 larger than the inner diameter of the tubular member 101, the gripping member 106 does not enter the inside of the tubular member 101, so that the piston rod 105 completely enters the inside of the tubular member 101. Can be prevented.

  In this embodiment, the outer diameter of the gripping member 106 is substantially the same as the outer diameter of the tubular member 101. On the outer peripheral surface of the gripping member 106, a screw thread having the same pitch as that of the screw thread (first screw thread) provided on the outer peripheral surface of the tubular member 101 is provided. Thereby, the holding member 106 and the tubular member 101 can be screwed together to fix the tubular member 101 to the holding member 106.

  The length of the piston rod 105 is the piston that is pushed in in a state where the piston 104 is pushed into the tubular member 101 until the gripping member 106 contacts the other end (opening portion 101b on the other end side) of the tubular member 101. 104 is positioned so as to be positioned closer to the gripping member 106 than one end of the tubular member 101 (opening portion 101a on one end side). As a result, the piston 104 moves away from the tubular member 101 even when the piston 104 is pushed into the tubular member 101 until the gripping member 106 contacts the other end (opening portion 101b on the other end side) of the tubular member 101. Don't jump out.

  In the gripping member 106, the outer diameter of the end portion on the tubular member 101 side may be thinned according to the inner diameter of the tubular member 101. In this case, a thread having the same pitch may be further provided on the outer peripheral surface of the end of the gripping member 106 on the tubular member 101 side and the inner peripheral surface of the end of the tubular member 101 on the gripping member 106 side. As a result, the gripping member 106 can be screwed into the tubular member 101, and the gripping member 106 can be directly fixed to the tubular member 101.

  The disconnection preventing member 102 is provided at one end of the tubular member 101. The joint portion between the removal preventing member 102 and the tubular member 101 is sealed. The removal preventing member 102 has a bag shape formed using a stretchable material. Specifically, the removal preventing member 102 is formed using a material such as rubber, for example. The escape prevention member 102 expands and contracts due to the entry and exit of gas through the tubular member 101. The slip-off preventing member 102 has, for example, a thick rubber balloon shape.

  In this embodiment, the piston 104 uses the tubular member 101 as a cylinder, and moves the gas to the escape preventing member 102 side when reciprocating inside the tubular member 101. Specifically, for example, when the piston 104 moves in a direction in which the piston 104 approaches the slip-off preventing member 102 inside the tubular member 101, the piston 104 is interposed between the piston 104 and the slip-off preventing member 102 inside the tubular member 101. The existing gas (air) is moved so as to be pushed into the escape prevention member 102. As a result, the removal preventing member 102 can be expanded by moving the piston 104 so that the piston 104 approaches the removal preventing member 102.

  Alternatively, specifically, for example, when the piston 104 moves in a direction approaching the removal preventing member 102 inside the tubular member 101, the piston 104 and the removal preventing member 102 inside the tubular member 101 are moved. When the gas (air) existing between them is moved so as to be pushed into the escape prevention member 102 and moved in a direction away from the escape prevention member 102 inside the tubular member 101, the piston inside the tubular member 101 is moved. The gas (air) existing on the other end side from 104 may be moved to the escape prevention member 102 side from the piston 104. Accordingly, the member 102 for preventing slipping can be inflated to an arbitrary size without depending on the amount of gas (air) that can exist inside the tubular member 101 such as the inner diameter of the tubular member 101.

  The sealing member 103 can be attached to the other end of the tubular member 101. For example, the sealing member 103 is attached to the tubular member 101 when the obturator 100 is used. The sealing member 103 includes a cylindrical portion 103a and a flange portion 103b. The cylindrical portion 103 a has a cylindrical shape having an inner diameter that is substantially the same as the outer diameter of the tubular member 101. A thread (second thread) is provided on the inner peripheral surface of the cylindrical portion 103a.

  The pitch of the screw thread (second screw thread) provided on the inner peripheral surface of the cylindrical portion 103a is equal to the pitch of the screw thread (first screw thread) provided on the outer peripheral surface of the tubular member 101. ing. Further, the pitch of the threads provided on the inner peripheral surface of the cylindrical portion 103 a is equivalent to the pitch of the threads provided on the outer peripheral surface of the gripping member 106.

  In this embodiment, the screw thread provided on the inner peripheral surface of the cylindrical portion 103a is screwed with the screw thread provided on the outer peripheral surface of the tubular member 101 and the screw thread provided on the outer peripheral surface of the gripping member 106. The sealing member 103 can be attached to the tubular member 101 by fixing the positional relationship between the tubular member 101 and the sealing member 103. As described above, the sealing member 103 can be easily and surely attached to the tubular member 101 by screwing the threads together and attaching the sealing member 103 to the tubular member 101.

  In the state where the sealing member 103 is mounted on the tubular member 101, the outer peripheral surfaces of the tubular member 101 and the gripping member 106 and the inner peripheral surface of the sealing member 103 are screwed together. The position of the gripping member 106, that is, the piston 104 is fixed. As a result, in a state where the sealing member 103 is mounted on the tubular member 101, the gas (air) coming and going through the tubular member 101 is blocked.

  The flange portion 103b in the sealing member 103 is provided at one end of the cylindrical portion 103a. The flange portion 103b has a substantially disk shape with a diameter larger than the opening diameter of the opening portion to be closed (see reference numeral 201a in FIG. 2). The obturator 100 according to this embodiment has an opening (hereinafter referred to as a “penetrating opening”) provided so as to penetrate a wall of a building in order to cope with, for example, future wiring addition, as a closing object.

  In the flange portion 103b, an elastic material such as rubber or silicon may be provided on the surface on the side of the removal preventing member 102, for example. As a result, when the sealing member 103 is mounted on the tubular member 101 inserted into the through-type opening, the elastic material acts like a packing so that the sealing member 103 is sealed against the opposing wall surface. It is possible to prevent a gap from being formed between the member 103 (the flange portion 103b thereof) and to bring the sealing member 103 into close contact with the wall surface.

  The piston 104 may be provided with a deaeration opening that moves the gas toward the sealing member 103 relative to the piston 104. The deaeration opening is provided with a closing plug for closing the deaeration opening so that the gas can be moved to the sealing member 103 side from the piston 104 at an arbitrary timing. The gas (air) in the inside may be extracted. The degassing opening and the blocking plug that closes the degassing opening can be easily realized by using a known technique, and thus illustration and description thereof are omitted.

  The obstruction plug may be a check valve, for example. The check valve opens when the gas (air) flows in the forward direction (the direction from the sealing member 103 side toward the escape prevention member 102 side), and the gas (air) flows in the reverse direction (the escape prevention member 102 side). It is a valve that closes when it flows in the direction from the direction toward the sealing member 103, and can be easily realized using various known techniques.

(Usage example of obturator 100)
Below, the usage example of the obturator 100 of embodiment concerning this invention is demonstrated. 2, 3 and 4 are explanatory views showing an example of use of the obturator 100 according to the embodiment of the present invention. 2, 3, and 4, when using the obturator 100 according to the embodiment of the present invention, the operator penetrates the one side of the wall 201 provided with the through-type opening 201 a to be closed. A closing operation for closing the mold opening 201a is performed.

  In the closing operation, the operator first inserts the tubular member 101 into the through-type opening 201a from one side of the through-type opening 201a to be closed. When the tubular member 101 is inserted, the through-type opening is arranged so that the removal preventing member 102 is located on the opposite side of the worker (the other side of the wall 201 when viewed from the worker) with the wall 201 in between. The tubular member 101 is inserted into the portion 201a.

  The length of the tubular member 101 can be appropriately selected according to the thickness of the wall 201 in which the through-type opening 201a to be closed is formed. Specifically, when the penetrating opening 201a is closed, the tubular member 101 having a length longer than the thickness of the wall 201 in which the penetrating opening 201a to be closed is formed is used. The thickness of the wall 201 on which the through-type opening 201a to be closed is formed can be grasped in advance.

  Similarly, the thickness of the tubular member 101 can be appropriately selected according to the opening diameter of the through-opening 201a to be closed and the minimum inner diameter of the through-opening 201a. The thickness of the tubular member 101 should just be smaller than the opening diameter of the penetration type opening part 201a.

  Next, the piston 104 is reciprocated inside the tubular member 101 in a state where the tubular member 101 is inserted into the through opening 201a. Specifically, the operator presses the tubular member 101 with one hand (for example, the left hand) and grips the gripping member 106 with the other hand (for example, the right hand). The piston 104 can be reciprocated by moving the gripping member 106 in the direction in which the valve contacts and separates. The slip-off prevention member 102 is expanded by the gas (air) that flows in as the piston 104 reciprocates.

  The operator reciprocates the piston 104 until the outer diameter of the removal preventing member 102 becomes larger than the opening diameter of the through-type opening 201a. The outer diameter of the removal preventing member 102 is set such that, for example, an operator wearing the obturator 100 and another worker attach the obturator 100 with the wall 201 having the through-type opening 201a interposed therebetween. It can be confirmed by visually recognizing from the opposite side to the worker who is doing.

  Alternatively, the outer diameter of the removal preventing member 102 is, for example, whether the worker wearing the obturator 100 appropriately pulls the tubular member 101 toward the front side of the worker and the removal preventing member 102 is caught. You may confirm by examining. Thereby, one worker can perform the work of inflating the removal preventing member 102 and the work of confirming the outer diameter of the removal preventing member 102.

  Next, the gripping member 106 is fixed to the tubular member 101 in a state in which the removal preventing member 102 is inflated until the outer diameter of the removal preventing member 102 becomes larger than the opening diameter of the through-type opening 201a. Specifically, the operator presses the tubular member 101 with one hand (for example, the left hand), rotates the gripping member 106 against the tubular member 101 with the other hand (for example, the right hand), and rotates the gripping member 106 with the tubular member. The gripping member 106 is fixed to the tubular member 101 by being screwed to the 101.

  Then, the sealing member 103 is fixed to the tubular member 101 with the gripping member 106 fixed to the tubular member 101. Specifically, the operator presses the tubular member 101 with one hand (for example, the left hand), fits the cylindrical portion 103a of the sealing member 103 into the tubular member 101 with the other hand (for example, the right hand), and seals the sealing member. The sealing member 103 is fixed to the tubular member 101 by screwing the 103 into the tubular member 101.

  In a state where the sealing member 103 and the tubular member 101 are partially screwed, the tubular member 101 and the removal preventing member 102 are not separated from the sealing member 103 and moved to the opposite side of the wall 201. . For this reason, the operator can release one hand (for example, the left hand) from the tubular member 101 when the sealing member 103 and the tubular member 101 are partially screwed together.

  Specifically, a part of the gripping member 106 protrudes from the cylindrical portion 103a of the sealing member 103, and the gripping member 106 or the tubular member 101 can be pressed from the other end side of the sealing member 103. It is preferable to release one hand (for example, the left hand) from the tubular member 101 at the point of time. Thereby, it is possible to prevent the tubular member 101 from falling to the other side of the wall 201 due to the elastic force of the disengagement preventing member 102 in the inflated state.

  When the sealing member 103 is screwed into the tubular member 101, the sealing member 103 is pulled back to the worker performing the closing operation so that the inflated removal preventing member 102 contacts the wall 201. Thereafter, the sealing member 103 is further screwed into the tubular member 101. The distance from the sealing member 103 to the removal preventing member 102 becomes shorter as the sealing member 104 is screwed into the tubular member 101. The sealing member 103 is screwed into the tubular member 101 to the extent that the sealing member 103 does not rattle against the wall 201.

  Since the tubular member 101 has a swelling prevention member 102 in an expanded state on the opposite side of the sealing member 103, when the sealing member 103 is screwed into the tubular member 101, the sealing member 103 is The tubular member 101 is gradually and strongly pulled by the removal preventing member 102. This pulling force can prevent the sealing member 103 from rattling against the wall 201.

  In this manner, the sealing member 103 can be attached to the tubular member 101 in a state where the removal preventing member 102 is inflated. The through-type opening 201 a is closed on one side by a bulging prevention member 102 in an inflated state and on the other side by a sealing member 103. That is, the through-type opening 201a is closed from both sides of the wall 201 where the through-type opening 201a is formed.

  In the obturator 100 in the state in which the through-type opening 201a is closed, the tubular member 101 in the state of being inserted into the through-type opening 201a is moved to the sealing member 103 side by the inflated state removal preventing member 102. Be regulated. In the obturator 100 with the through-type opening 201a closed, the sealing member 103 restricts the movement of the tubular member 101 inserted into the through-type opening 201a toward the removal preventing member 102. The

  Thereby, the position shift of the obturator 100 with respect to the penetration type opening part 201a can be prevented from both the inside and the outside of the building. Then, by preventing the displacement of the obturator 100 from the inside and outside of the building with respect to the through-type opening 201a, the through-type opening 201a provided in the wall 201 of the building can be reliably closed. it can.

  The obturator 100 with the through-type opening 201a closed closes the through-type opening by exhausting (degassing) the gas from the inflated state preventing member 102 to deflate the preventing member 102. It can be pulled out from the part 201a. The obturator 100 pulled out from the through-type opening 201a can be reused when the same through-type opening 201a is closed again or when another through-type opening 201a is closed.

  As described above, the obturator 100 according to the embodiment of the present invention has a tubular shape that is open at both ends and allows gas to flow between the opening 101a at one end and the opening 101b at the other end. The member 101, the tubular member 101, provided at one end of the tubular member 101, can be attached to the other end of the tubular member 101. A sealing member that blocks gas from entering and exiting through the tubular member 101 in a state where it is attached to the tubular member 101, and has a dimension in the diameter direction of the tubular member 101 that is larger than the opening diameter of the opening to be closed. 103.

  According to the obturator 100 of the embodiment of the present invention, the removal preventing member 102 is positioned on the opposite side of the operator with the wall 201 provided with the through-type opening 201a to be obstructed in between. In addition, in the state where the tubular member 101 is inserted into the through-type opening 201a from one end side of the tubular member 101, the drop-preventing member 102 is expanded until it becomes larger than the opening diameter of the through-type opening 201a. The through-type opening 201a can be closed from both sides of the wall 201 or the like simply by performing work from one surface side such as 201. As a result, the through-type opening 201a can be easily closed.

  Further, according to the obturator 100 of the embodiment according to the present invention, by attaching the sealing member 103 to the other end of the tubular member 101 in a state where the removal preventing member 102 is inflated, The obturator 100 can be fixed to the wall 201 or the like by sandwiching the wall 201 or the like with the sealing member 103. Thus, the obturator 100 can be prevented from falling off the through-type opening 201a without being affected by the material such as the wall 201 provided with the through-type opening 201a.

  That is, as compared with the conventional technique in which the through-type opening 201a is closed by friction with the wall 201, the obturator 100 according to the embodiment of the present invention sandwiches the wall 201 regardless of the friction with the wall 201. In this way, the through opening 201a can be closed. Accordingly, the through-type opening 201a can be stably blocked over a long period of time without being influenced by the material such as the wall 201 provided with the through-type opening 201a.

  And in the obturator 100 of the state which obstruct | occluded the penetration type opening part 201a provided in the wall 201 of a building, etc., the tubular member of the state inserted in the penetration type opening part 201a by the member 102 for prevention of swelling of the inflated state The movement of 101 toward the sealing member 103 is restricted. Further, in the obturator 100 in a state in which the through-type opening 201a provided in the building wall 201 or the like is closed, the tubular member 101 in a state of being inserted into the through-type opening 201a by the sealing member 103 is used to prevent the occlusion. Movement toward the member 102 is restricted.

  Thereby, according to obturator 100 of an embodiment concerning this invention, position shift of obturator 100 with respect to penetration type opening part 201a can be prevented from both the inside and outside of a building. And thereby, the penetration type opening part 201a provided in the wall 201 etc. of a building can be reliably obstruct | occluded.

  As described above, according to the obturator 100 according to the embodiment of the present invention, it is possible to easily close the through-type opening 201a provided in the building wall 201 and the like, thereby reducing the burden on the operator involved in the closing operation. In addition, the through-type opening 201a can be reliably closed in a stable state over a long period of time.

  Further, according to the obturator 100 of the embodiment of the present invention, the gas is exhausted (degassed) from the inflated escape prevention member 102 to deflate the escape prevention member 102, thereby penetrating. The obturator 100 used to close the mold opening 201a can be pulled out from the through-type opening 201a, and the obturator 100 pulled out from the through-type opening 201a is closed again with the same through-opening 201a. Or when another through-type opening 201a is closed. Thereby, the obturator 100 can be repeatedly used, and the obturator 100 in consideration of environmental problems can be provided as compared with the case of disposable.

  And by closing the penetration type opening part 201a provided in the wall 201 of a building etc. using the obturator 100 of embodiment concerning this invention, rainwater flows in into a building from the penetration type opening part 201a. Can be prevented. Thereby, according to the obturator 100 of embodiment concerning this invention, deterioration of the building by erosion of rain water can be prevented.

  Further, by closing the through opening 201a provided in the building wall 201 or the like using the obturator 100 according to the present invention, small animals and insects can enter the building from the through opening 201a. Can be prevented. Thereby, according to the obturator 100 of this embodiment concerning this invention, it can prevent that a small animal, an insect, etc. damage the inside of a building.

  Moreover, it is possible to prevent bees from nesting in the through-opening 201a by closing the through-opening 201a provided in the wall 201 of the building using the closing tool 100 according to the present invention. Thus, according to the obturator 100 of the embodiment of the present invention, it is possible to ensure the safety of the operator when using the through-type opening 201a.

  Further, the obturator 100 according to the embodiment of the present invention includes a tubular member 101 provided with a first thread provided on the other end side of the tubular member 101, and can be screwed into the first thread. The sealing member 103 is provided with the second screw thread, and the sealing member 103 is attached to the other end of the tubular member 101 by screwing the second screw thread into the first screw thread. It is characterized by.

  According to the obturator 100 according to the embodiment of the present invention, the thread provided on the outer peripheral surface of the tubular member 101 (first screw thread) and the thread provided on the inner peripheral surface of the cylindrical portion 103a ( By connecting the tubular member 101 and the sealing member 103 by screwing the second thread), the tubular member 101 is separated before the closing operation and is connected by the operator's hand during the closing operation. And the sealing member 103 can be easily and reliably connected. As a result, it is possible to reduce the burden on the operator involved in the closing operation and to reliably close the through-type opening 201a in a stable state over a long period of time.

  The obturator 100 according to the embodiment of the present invention has an outer diameter substantially the same as the inner diameter of the tubular member 101, and can move along the axial direction of the tubular member 101 inside the tubular member 101. A piston 104 that moves gas toward the slip-off preventing member 102 when reciprocating inside the tubular member 101, and a rod-shaped member having an outer diameter smaller than the inner diameter of the tubular member 101, one end of the piston 104 A piston rod 105 having the other end connected to the sealing member 103, and the member 102 for preventing disengagement is a member for preventing disengagement from the piston 104 by the reciprocation of the piston 104 inside the tubular member 101. It is characterized by extending by the gas moved to the 102 side.

  According to the obturator 100 according to the embodiment of the present invention, the removal preventing member 102 can be easily and reliably inflated. As a result, it is possible to reduce the burden on the operator involved in the closing operation and to reliably close the through-type opening 201a in a stable state over a long period of time.

  In addition, the obturator 100 according to the embodiment of the present invention is provided in the piston 104 so that the deaeration opening for moving the gas to the sealing member 103 side from the piston 104 and the deaeration opening can be opened. And an occluding plug for closing. According to the obturator 100 having such a configuration, the escape preventing member 102 in the inflated state can be easily degassed, so that the obturator 100 that closes the through-type opening 201a is attached to the through-type opening. It can be easily removed from 201a.

  As a result, according to the obturator 100 of the embodiment of the present invention, the burden on the worker when using the closed through-type opening 201a is reduced, and the through-type opening 201a is provided over a long period of time. It can be reliably closed in a stable state.

  As described above, the obturator according to the present invention is useful for an obturator that occludes a through-type opening that penetrates a wall surface provided for future wiring work, and is particularly provided at a high place. It is suitable for an obturator that closes a through-type opening.

DESCRIPTION OF SYMBOLS 100 Obturator 101 Tubular member 102 Prevention member 103 Sealing member 104 Piston 105 Piston rod 106 Gripping member 201 Wall 201a Through-type opening

Claims (2)

Both ends are open, a tubular member that allows gas flow between the opening on one end and the opening on the other end,
A slip-off preventing member that is provided at one end of the tubular member and has a bag shape that can be expanded and contracted by gas entering and exiting through the tubular member;
An opening that can be attached to the other end of the tubular member, blocks gas in and out through the tubular member in a state of being attached to the tubular member, and has a dimension in the diameter direction of the tubular member that is to be closed. A sealing member larger than the opening diameter of
An obturator characterized by comprising: The tubular member includes a first thread provided on the other end side,
The sealing member includes a second thread that can be screwed into the first thread, and the other end of the tubular member is formed by screwing the second thread into the first thread. The obturator according to claim 1, wherein the obturator is attached to the obturator.

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