JP2005200963A - Sleeve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a repetitively usable sleeve superior in mechanical strength, by facilitating removing work from a hole for a pipe arranged in a foundation structure of a building. <P>SOLUTION: This sleeve 1 has a predetermined diameter of the hole for the pipe, and has an outer diameter larger than an inner diameter of a sleeve body 2 on the inside of the sleeve body 2 formed by arranging a cut 2a in the axial direction of a resilient cylindrical pipe. The sleeve detachably fits a first adjusting pipe 3 formed by arranging a cut 3a in the axial direction of the resilient cylindrical pipe so that positions of both cuts 2a and 3a do not coincide. The sleeve detachably fits a second adjusting pipe 4 formed by arranging a cut 4a in the axial direction of the resilient cylindrical pipe so that positions of both cuts 3a and 4a do not coincide. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a sleeve used for forming a hole for piping in a building foundation structure or a concrete wall.

  Piping holes are provided in the building foundations and concrete walls. In order to form a foundation structure having such a hole for piping, as shown in FIG. 11, a paper material is used as a material on the lower main reinforcement 8 of the reinforcement 7 arranged on the foundation 10 such as crushed stone. The void structure 17 is formed in a cylindrical shape, and its periphery is covered with a formwork such as a calfoam 12 or a metal foam 13, and the concrete is poured into the formwork to have a pipe hole 6 An object 5 is formed. In this case, the void pipe 17 is forcibly removed from the piping hole 6 formed by removing various molds by a predetermined means.

  Since the above-described void tube 17 is formed of a paper material, it is easily damaged or deformed due to the compressive force associated with concrete placement. Further, since the removal work of the void pipe 17 is performed so as to be twisted with a tool such as a bar, the operator is not only forced to work, but also when the void pipe 17 is deformed by the compressive force accompanying the concrete placement, the piping is There is a drawback that it is necessary to correct the working hole 6 and there is a problem that much labor is required for the work. Further, since the void tube 17 is cut and attached and removed each time, the void tube 17 is finally disposed of as waste, and the void tube 17 cannot be repeatedly used, resulting in high costs and loss of beautification of the site due to the waste. There are also problems. In view of this, there has been proposed a sleeve that is not damaged or deformed when placing concrete, is easy to be removed from concrete, and can be used repeatedly. (For example, refer to Patent Document 1.)

As shown in FIG. 12, the sleeve 18 is a sleeve provided with a pair of sleeve clamping pieces 20 that are bent inward and have elastic force on both edges located at substantially the center in the axial direction of the semi-tube 19. A main body 21 is formed, and a sleeve packing 22 is detachably fitted between a pair of sleeve clamping pieces 20. Similarly to the above, when the base structure 5 having the piping hole 6 is formed and the sleeve 18 is removed from the piping hole 6, when the sleeve packing 22 is removed with a tool or the like, the sleeve holding piece 20 is inwardly moved by the contraction force. And the outer peripheral length and the outer diameter are both reduced, creating a gap between the outer peripheral surface of the pair of sleeve clamping pieces 20 and the piping hole 6, and the sleeve body 21 is removed from the compressive force of the ready-mixed concrete. It can be opened and removed from the piping hole 6.
JP-A-7-260050

  However, in the sleeve 18, there is a problem that the ready concrete enters and hardens from between the sleeve packing 22 and the sleeve holding piece 20, and labor is required to remove the sleeve packing 22 from the sleeve holding piece 20.

  The present invention has been made in view of the above circumstances and problems, and an object thereof is to provide a sleeve that can be easily detached, has excellent mechanical strength, and can be used repeatedly. And

The invention of claim 1 for achieving the above object relates to a sleeve used for providing a hole for piping in a foundation structure or a concrete wall of a building,
A pipe body having a predetermined diameter and having an outer diameter larger than the inner diameter of the sleeve body on the inner side of the sleeve body formed by providing an incision in the axial direction of the cylindrical tube having elasticity; and The first adjustment tube formed by providing a cut in the axial direction of the cylindrical tube having elastic force is detachably fitted so that the positions of both the cuts do not match,
A second adjustment tube having an outer diameter larger than the inner diameter of the first adjustment tube and having a cut in the axial direction of the cylindrical tube having elasticity is formed inside the first adjustment tube. The reason is that the notch positions are detachably fitted so as not to coincide with each other.

  The invention of claim 2 is that, in the invention of claim 1, the sleeve body, the first adjustment pipe and the second adjustment pipe are formed of a synthetic resin.

Invention of Claim 3 is the sleeve used in order to provide the hole for piping in the foundation structure of a building, or a concrete wall,
A circular shape having a predetermined diameter of the hole for piping and an outer diameter larger than the inner diameter of the sleeve body on the inner side of both ends of the sleeve body formed by providing an incision in the axial direction of the cylindrical tube having elasticity The lid body is detachably fitted, and the sleeve body is cut with a tape.

  The invention of claim 4 is that, in the invention of claim 3, the sleeve body is formed of a synthetic resin.

  According to the first aspect of the present invention, when the piping hole is formed in the foundation structure of the building or the concrete wall and the sleeve embedded in the concrete is removed from the piping hole, the second adjustment pipe and the first adjustment pipe If it removes from the inner adjustment tube in order, the first outer adjustment tube and the sleeve body on the outer side can be easily removed by reducing their diameters by their own elastic force. Moreover, since the cutting positions of the sleeve main body, the first adjustment pipe, and the second adjustment pipe do not coincide with each other, they are not fixed by hardening of the placed concrete, and the work efficiency is improved.

  According to invention of Claim 2, while being able to make the sleeve excellent in mechanical strength, an elastic force can be given to a sleeve. In addition, the sleeve can be used repeatedly.

  According to the invention of claim 3, simply removing the lids at both ends of the sleeve body reduces the diameter of the sleeve body by its own elastic force and peels it from the concrete. Therefore, the work is easy, and the hardened concrete is damaged. It can be removed securely without any problems.

  According to the invention of claim 4, it is possible to make a sleeve having excellent mechanical strength and to give the sleeve an elastic force. In addition, the sleeve can be used repeatedly.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the sleeve 1 according to the first embodiment has a predetermined diameter of a piping hole and is formed by providing a cut 2a in the axial direction of a cylindrical tube having elasticity. The first adjustment tube 3 formed by providing a cutout 3a in the axial direction of the cylindrical tube having an outer diameter larger than the inner diameter of the sleeve body 2 and having an elastic force inside the sleeve body 2 is cut into the sleeve body 2. A cylindrical tube having an outer diameter larger than the inner diameter of the first control tube 3 and having an elastic force, which is detachably fitted so that the positions of the notches 3a of the first control tube 3 do not coincide with each other. The second control pipe 4 formed by providing a cut 4a in the axial direction of the first control pipe 3 is detachably fitted so that the positions of the cut 3a of the first control pipe 3 and the cut 4a of the second control pipe 4 do not coincide with each other. Configured.

  The sleeve body 2, the first adjustment pipe 3 and the second adjustment pipe 4 are made of a material having excellent mechanical strength and water resistance and elastic force. Rubber or synthetic resin is preferred. In particular, since the ready-made drain pipe is made of hard vinyl chloride, which is a synthetic resin, it is possible to use a drain pipe that has been disposed of at a construction site or the like. Inexpensive.

A procedure for creating the sleeve 1 will be described.
For example, one drainage pipe that has been disposed of is cut to produce three cylindrical pipes having substantially the same outer diameter and axial length. And the notch | incision is provided with a tool etc. in the axial direction of each cylindrical tube, and the sleeve main body 2, the 1st adjustment pipe 3, and the 2nd adjustment pipe 4 are created.

  Next, as shown in FIG. 2 (a), with the notch 3a of the first adjusting tube 3 opened with a screwdriver or the like to ensure a predetermined gap, the expansion material A is removably fitted into the notch 3a. Match. The expansion material A is a long member formed of synthetic resin or wood, and when fitted to the first adjustment pipe 3, the inner diameter of the first adjustment pipe 3 is made larger than the outer diameter of the second adjustment pipe 4. It has a role. Further, instead of the expansion material A, a wedge or the like may be detachably fitted into the notch 3a to increase the inner diameter of the first adjustment pipe 3. Next, as shown in FIG. 2 (b), the second adjustment pipe 4 is inserted inside the first adjustment pipe 3 so that the positions of the cuts 3 a and 4 a do not coincide with each other, and the second adjustment pipe 4 is expanded from the first adjustment pipe 3. Remove the interstitial material A. The diameter of the first adjustment pipe 3 is reduced by its own elastic force, and the notch 3a is narrowed and the second adjustment pipe 4 is fitted inside the first adjustment pipe 3 as shown in FIG. It becomes a state.

  Further, as shown in FIG. 3 (a), similarly to the above, the expansion material B is detachably fitted into the notch 2a of the sleeve body 2. The expansion material B is a long member formed of synthetic resin or wood, and when fitted to the sleeve body 2, the sleeve body comes from the outer diameter of the first adjustment pipe 3 fitted with the second adjustment pipe 4. It has the role of increasing the inner diameter of 2. Further, instead of the expanding material B, a wedge or the like may be detachably fitted into the notch 2a to increase the inner diameter of the sleeve body 2. Finally, as shown in FIG. 3B, the first adjustment tube 3 fitted with the second adjustment tube 4 is placed inside the sleeve body 2 so that the positions of the notches 2a and 3a do not coincide with each other. After the insertion, the expansion material B is removed with a tool or the like. Since the sleeve body 2 is reduced in diameter by its own elastic force, as shown in FIG. 1, the notch 2 a is narrowed, the first adjustment pipe 3 is fitted inside the sleeve body 2, and the inside of the first adjustment pipe 3 Thus, the second adjustment pipe 4 is fitted. Thus, the sleeve 1 is completed. It is more effective if the notch 2a of the sleeve body 2 on the outermost side of the sleeve 1 thus completed is closed with a tape not shown in the figure so that the concrete does not enter the gap between the notches 2a. .

  The construction procedure of the building foundation structure 5 having the piping holes 6 using the sleeve 1 according to the first embodiment will be described. First, as shown in FIG. 4, the sleeve 1 is placed on a predetermined main reinforcement lower end reinforcement 8 of the reinforcing bar 7, and is fastened so that the sleeve 1 placed on the wire 9 does not shift.

  Next, as shown in FIG. 5, a bar arrangement 7 having a sleeve 1 fixed thereon is placed on a base 10 such as crushed stone, and a set of two curved curls that form a base for forming a base concrete 11. The foam 12 is arranged at a predetermined position in such a manner that the reinforcing bar 7 on which the sleeve 1 is placed is interposed between the calfows 12 so that the curved inner surfaces face each other. Then, a set of two metal foams 13 as a mold is placed on the calfoam 12 so as to seal both ends of the sleeve 1. Next, ready-mixed concrete is poured from above between a pair of two metal foams 13 to make up the foundation structure 5.

  Since the sleeve 1 is formed of a hard member such as hard vinyl chloride as described above and has excellent mechanical strength, the sleeve 1 is not deformed by the compressive force of the concrete. Further, since the sleeve 1 is not damaged, it can be used repeatedly.

  When the ready-mixed concrete hardens to a predetermined hardness, the metal foam 12 located at the place where the sleeve 1 is incorporated is removed. Next, as shown in FIG. 6, the second adjustment pipe 4 constituting the sleeve 1 is pulled out with a tool or the like. Since the sleeve 1 is composed of three cylindrical pipes in a triple manner, the ready concrete does not enter the second adjustment pipe 4, and the second adjustment pipe 4 can be easily pulled out.

  When the second adjustment tube 4 is pulled out, the first adjustment tube 3 is reduced in diameter by its own elastic force and returns to the original cylindrical tube state. As a result, the sleeve body 2 is also reduced in diameter by its own elastic force, and the outer diameter is reduced, so that the outer peripheral surface of the sleeve body 2 is peeled off from the hardened concrete as shown in FIG. A gap t is formed between the formed piping hole 6 and the sleeve body 2. By creating the gap t, the sleeve main body 2 and the first adjustment pipe 3 fitted inside the sleeve main body 2 are detachable by being released from the compressive force from the hardened concrete. Then, if the ends of the sleeve body 2 and the first adjustment pipe 3 are hammered out with a hammer or the like, the removal operation of the sleeve 1 is completed, and the pipe hole 6 penetrates, and preparations for inserting a pipe not shown in the figure are completed.

  When it is difficult to hammer the sleeve main body 2 and the first adjustment pipe 3 with a hammer or the like, the first adjustment pipe 3 is further pulled out from the sleeve main body 2 and the sleeve main body as shown in FIG. When the diameter of 2 is reduced by its own elastic force and returned to the original cylindrical tube state, the gap t is further increased and then hammered out with a hammer or the like, it can be easily taken out.

  As shown in FIG. 8, the sleeve 14 according to the second embodiment includes a sleeve main body 2 made of the same material as that of the first embodiment, and a circular lid 15 having an outer diameter larger than the inner diameter of the sleeve main body 2. The lid body 15 is detachably fitted inside the both ends of the sleeve body 2, and the notch 2 a of the sleeve body 2 enlarged thereby is covered with a tape 16.

A procedure for creating the sleeve 14 will be described.
First, as shown in FIG. 9A, the lid body 15 is inserted inside the both ends of the sleeve body 2 whose diameter has been expanded by fitting the expanding material B into the notch 2 a. The lid 15 has an outer diameter larger than the inner diameter of the sleeve main body 2 in the state of the original cylindrical tube not fitted with the expansion material B. The lid 15 is formed in a circular shape with a steel material or the like, and a removal hole 15a is provided at the center thereof.

  Next, as shown in FIG. 9B, the expansion material B is removed with a tool or the like. As shown in FIG. 9 (c), the sleeve body 2 from which the expansion material B has been removed is reduced in diameter by its own elastic force, so that the cut 2 a is narrowed, and the lid body 15 is fitted to both ends of the sleeve body 2. It will be in the state. Finally, when the outside of the cut 2a is closed with the tape 16 so that the ready concrete does not enter from the cut 2a of the sleeve body 2, a sleeve 14 as shown in FIG. 8 is formed.

  The attachment work to the substructure 5 is the same as that of the first embodiment. However, the procedure for removing the sleeve 14 from the formed piping hole 6 is as shown in FIG. When the lid 15 is removed by hooking the tool or the like, the sleeve body 2 is reduced in diameter by its own elastic force and a gap t is formed between the outer periphery and the piping hole 6 as in the first embodiment. Is peeled from the piping hole 6. Thereafter, the sleeve 14 can be easily removed by striking the end of the sleeve body 2 with a hammer or the like. Since other operations and actions are the same as those in the first embodiment, description thereof is omitted.

  It is applicable to the formation of holes for piping in building foundations and concrete walls.

The perspective view which shows the sleeve which concerns on 1st Embodiment. (A) thru | or (c) is explanatory drawing which shows the assembly procedure of the 1st adjustment pipe and the 2nd adjustment pipe which comprise the said sleeve. (A) And (b) is explanatory drawing which shows the preparation procedure of the said sleeve. The perspective view when the said sleeve is fixed to reinforcement. Sectional drawing in the case of forming the foundation structure which has a hole for piping using the said sleeve. The perspective view which shows the removal procedure of the said sleeve from the hole for piping. (A) Operational diagram when removing the second adjustment pipe constituting the sleeve from the piping hole, (b) removing the first adjustment pipe and the second adjustment pipe constituting the sleeve from the pipe hole. Action diagram of time. The perspective view which shows the sleeve which concerns on 2nd Embodiment. (A) thru | or (c) is explanatory drawing which shows the preparation procedure of the said sleeve. The perspective view which shows the removal procedure from the hole for piping of the said sleeve. Sectional drawing in the case of forming the foundation structure which has a hole for piping using the void pipe of a prior art example. The perspective view which shows the sleeve of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 14 Sleeve 2 Sleeve main body 2a Cut of sleeve main body 3 1st adjustment pipe 3a Cut of 1st adjustment pipe 4 2nd adjustment pipe 15 Cover 16 Tape

Claims (4)

In sleeves used to provide piping holes in building foundations and concrete walls,
A pipe body having a predetermined diameter and having an outer diameter larger than the inner diameter of the sleeve body on the inner side of the sleeve body formed by providing an incision in the axial direction of the cylindrical tube having elasticity; and The first adjustment tube formed by providing a cut in the axial direction of the cylindrical tube having elastic force is detachably fitted so that the positions of both the cuts do not match,
Further, a second control tube formed by providing a cut in the axial direction of a cylindrical tube having an outer diameter larger than the inner diameter of the first control tube and having an elastic force inside the first control tube. A sleeve characterized by being detachably fitted so that the positions of both cuts do not coincide.   The sleeve according to claim 1, wherein the sleeve main body, the first adjustment pipe, and the second adjustment pipe are formed of a synthetic resin. In sleeves used to provide piping holes in building foundations and concrete walls,
A circular shape having a predetermined diameter of the hole for piping and an outer diameter larger than the inner diameter of the sleeve body on the inner side of both ends of the sleeve body formed by providing an incision in the axial direction of the cylindrical tube having elasticity A sleeve characterized in that the lid body of the sleeve is detachably fitted and the notch of the sleeve body is closed with tape.   The sleeve according to claim 3, wherein the sleeve body is made of a synthetic resin.

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