JP2011256643A - Sleeve holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sleeve holder for use in a plurality of sleeves having different sizes, capable of stably fixing a sleeve to a steel bar when concrete is placed.SOLUTION: A sleeve holder 10 made of a synthetic resin comprises a fixing component 20 to be fixed to a steel bar 2, a holding plate 30 to be wound with a binding band 61 together with a sleeve 1, and a connection member 40 that lies between the fixing component 20 and the holding plate 30. The holding plate 30 comprises a central piece 31 and tongue pieces 32 located at both sides of the central piece 31. A groove 33 is arranged between the central piece 31 and the tongue piece 32. The tongue pieces 32 are flexurally deformed more easily than the central piece 31.

Description

  The present invention relates to a sleeve holder for fixing a sleeve, which penetrates a reinforced concrete frame and into which piping is inserted, to the rebar when placing concrete.

  A reinforced concrete frame in which reinforcing steel is embedded in concrete is often used as the foundation of a building. In a reinforced concrete frame that forms the foundation of a building, it is necessary to arrange pipes such as a water supply pipe and a drain pipe so as to penetrate inside and outside. It is also possible to embed such piping directly in the concrete when placing the concrete. However, in that case, if the pipe is repaired after the construction, the concrete must be broken each time. Therefore, in order to be able to repair the pipe without breaking the concrete, a sleeve that penetrates the reinforced concrete frame is provided in advance, and the pipe is installed by inserting the pipe into the sleeve. ing.

  The sleeve that penetrates the reinforced concrete frame is constructed as follows. That is, first, a reinforcing bar is assembled. Next, the sleeve is fixed to the reinforcing bar. After that, a mold is placed around the reinforcing bars, and concrete is placed in the mold. Then, after confirming that the concrete has hardened sufficiently, remove the formwork. As a result, a reinforced concrete frame having a sleeve penetrated is formed.

  By the way, if the sleeve is not firmly fixed to the reinforcing bar, the sleeve is pushed by the flow of the ready-mixed concrete when placing concrete, and the position or posture of the sleeve may be shifted. Accordingly, it has been proposed to use a dedicated sleeve holder in order to fix the sleeve to the reinforcing bar (see, for example, Patent Documents 1 and 2).

  The sleeve fixing tool disclosed in Patent Document 1 includes a tubular object having a substantially C-shaped cross section that is fitted into a reinforcing bar, and a wire that fixes the sleeve to the tubular object. The tubular material is made of a synthetic resin. The sleeve is placed on the tubular object in such a posture as to intersect the tubular object. The wire is passed through the through hole of the tubular object and wound around the outer peripheral surface of the sleeve.

  The sleeve holder disclosed in Patent Document 2 includes a holding member that holds the sleeve, a fixing member that is fixed to the reinforcing bar, and a connecting member that is interposed between the holding member and the fixing member. The holding member, the fixing member, and the connecting member are all made of synthetic resin. The holding member has a holding contact portion formed in an arc shape so as to contact the outer peripheral surface of the sleeve. When the binding band is wound around the holding contact portion and the sleeve, the holding contact portion and the sleeve are fixed.

JP 2005-256579 A JP 2008-144823 A

  In the sleeve fixture disclosed in Patent Document 1, the sleeve is supported by the tubular object in a substantially point contact state. Therefore, it is difficult to hold the sleeve sufficiently stably, and the sleeve is liable to be displaced. In order to prevent the sleeve from being displaced, it is necessary to carefully wind the wire. For this reason, the work burden on the field worker is large.

  According to the sleeve holder disclosed in Patent Document 2, the holding contact portion is formed in an arc shape so as to contact the outer peripheral surface of the sleeve. Therefore, since the sleeve is brought into contact with the holding contact portion in a surface contact state, the sleeve can be stably held. However, the dimensions of sleeves used in the field vary. That is, a sleeve having a small outer diameter or a sleeve having a large outer diameter is used depending on the installation location of the sleeve, the type of building, and the like. In the sleeve holder disclosed in Patent Document 2, the curvature of the holding contact portion is uniquely determined. Therefore, the sleeve holder is not usable for a plurality of sleeves having different dimensions. Therefore, there is a problem that a sleeve holder must be prepared for each dimension of the sleeve.

  The present invention has been made in view of the above points, and the object of the present invention is to be used for a plurality of sleeves having different dimensions, and to stably fix the sleeve to the reinforcing bar when placing concrete. An object of the present invention is to provide a sleeve holder that can be used.

  The sleeve holder according to the present invention is a sleeve holder for fixing a sleeve, which penetrates a reinforced concrete frame and into which pipe is inserted, to the reinforcing bar when placing concrete, and is fixed to the reinforcing bar. The member extends in a substantially arc shape, and is in contact with the sleeve so that at least a part of the back surface thereof contacts the outer peripheral surface of the sleeve, and the long member is wound around the surface and the outer peripheral surface of the sleeve. And a connecting member interposed between the fixing member and the holding plate, at least the holding plate is formed of resin, and the holding plate is continuous with the connecting member. And a tongue piece located on both sides of the center piece in a direction along the circumferential direction of the sleeve, the tongue piece being deflected more than the center piece and deformable. Are those formed.

  Note that the fixing member, the holding plate, and the connecting member may be integrated or separate.

  According to the above-mentioned sleeve holder, when the curvature of the holding plate and the curvature of the sleeve match, the holding plate and the sleeve are in surface contact, and the sleeve is stably held by the holding plate. Even when the curvature of the holding plate and the curvature of the sleeve are different, if the sleeve is brought into contact with the back surface of the holding plate, the tongue piece bends so that the holding plate follows the outer peripheral surface of the sleeve. Transforms into Therefore, a relatively large contact area between the holding plate and the sleeve is ensured. Therefore, the sleeve holder can be used for a plurality of sleeves having different dimensions, and the sleeves can be stably fixed to the reinforcing bar.

  In the sleeve holder, a groove may be formed between the central piece and the tongue piece of the holding plate.

  As a result, the tongue piece is easily bent and deformed.

  The holding plate may extend on both sides in the axial direction of the sleeve rather than the connecting member.

  Thereby, the area of the back surface of the holding plate becomes larger than the cross-sectional area of the connecting member, and a large contact area between the holding plate and the sleeve can be ensured. Therefore, the sleeve can be fixed more stably.

  The sleeve holder may include a reinforcing rib provided between a side surface of the connecting member and a surface of the central piece of the holding plate.

  Thereby, the rigidity of the connecting member can be maintained high even though the connecting member is smaller in width (in other words, the length in the axial direction of the sleeve) than the holding plate. Therefore, the sleeve can be fixed more stably.

  The connecting member may be formed with a through hole that extends in a direction along the circumferential direction of the sleeve and through which the elongated member is inserted.

  Accordingly, the movement of the long member wound around the holding plate and the sleeve in the direction along the axial direction of the sleeve is restricted by the side wall of the through hole of the connecting member. Therefore, it is possible to suppress the long member from being detached from the holding plate, and it is possible to suppress the sleeve from being detached from the reinforcing bar.

  As described above, according to the present invention, it is possible to provide a sleeve holder that can be used for a plurality of sleeves having different dimensions and can stably fix the sleeve to a reinforcing bar when placing concrete. .

It is a perspective view of the sleeve fixed to the reinforcing bar using the sleeve holder. It is sectional drawing of the reinforced concrete frame provided with the sleeve. It is a perspective view of a sleeve and a holder for a sleeve. It is a perspective view of the holder for sleeves. It is sectional drawing of a sleeve and the holder for sleeves. It is a figure explaining the attachment method of the holder for sleeves. It is a figure explaining the attachment method of the holder for sleeves. It is a figure explaining the attachment method of the holder for sleeves. (A) is a front view of a sleeve holder to which a small diameter sleeve is attached, and (b) is a front view of the sleeve holder to which a large diameter sleeve is attached. It is the sectional view on the AA line of FIG. It is a perspective view of the holder for sleeves concerning 2nd Embodiment. It is a perspective view of the holder for sleeves concerning 3rd Embodiment. It is a perspective view of the holder for sleeves concerning 4th Embodiment. It is sectional drawing of the reinforced concrete frame provided with the sleeve which concerns on other embodiment.

<First Embodiment>
As shown in FIG. 1, a sleeve holder 10 according to the present embodiment fixes a sleeve 1 to a reinforcing bar 2 when placing concrete. FIG. 2 is a cross-sectional view of the reinforced concrete frame 4 in which the sleeve 1 is disposed. The reinforced concrete frame 4 according to the present embodiment constitutes the foundation of a house. The reinforced concrete frame 4 includes a concrete 3 and a reinforcing bar 2 embedded in the concrete 3. The sleeve 1 passes through the reinforced concrete frame 4. A pipe (not shown) such as a water supply pipe or a drain pipe is inserted into the sleeve 1. In the present embodiment, the sleeve 1 is a curved pipe. One end 1a of the sleeve 1 extends in the horizontal direction, and the other end 1b extends obliquely upward. However, the shape of the sleeve 1 is not limited at all, and may be a straight pipe or the like. The sleeve 1 is made of a synthetic resin such as vinyl chloride or polyethylene. However, the material of the sleeve 1 is not particularly limited.

  As shown in FIG. 3, the sleeve holder 10 includes a fixing member 20 fixed to the reinforcing bar 2, a holding plate 30 to which the sleeve 1 is attached, and a connecting member 40 interposed between the fixing member 20 and the holding plate 30. And. The fixing member 20, the holding plate 30, and the connecting member 40 are integrally formed of a synthetic resin such as polypropylene or ABS. However, the fixing member 20, the holding plate 30, and the connecting member 40 may be formed separately and assembled to each other. In the following description, for the sake of convenience, the axial direction of the sleeve 1 is referred to as the front-rear direction, and the axial direction of the reinforcing bar 2 is referred to as the left-right direction.

  As shown in FIG. 4, the fixing member 20 includes a sandwiching portion 21 having a substantially C-shaped cross section and a reinforcing bar introduction portion 22 that spreads from both ends of the sandwiching portion 21 in the circumferential direction. The reinforcing bar introduction part 22 has a shape that is folded back from the holding part 21. The holding part 21 and the reinforcing bar introduction part 22 extend in the left-right direction, and the holding part 21 is formed in a substantially cylindrical shape with the upper side opened. A hole 23 is formed on the lower side of the holding portion 21. As shown in FIG. 5, the holes 23 are respectively formed on the left side and the right side of the connecting member 40. The reinforcing bar 2 is provided with a bulging portion 2a extending outward in the radial direction. The bulging portion 2a is formed in an annular shape. The bulging portion 2 a is provided at predetermined intervals B in the axial direction of the reinforcing bar 2. The width A in the left-right direction of the hole 23 is smaller than the interval B between the bulging portions 2a.

  The holding plate 30 is formed in a substantially arc shape in cross section. As shown in FIG. 4, the holding plate 30 has a central piece 31 and a tongue piece 32. The central piece 31 is continuous with the connecting member 40. The tongue pieces 32 are provided on both sides of the central piece 31 in the direction along the circumferential direction of the sleeve 1. A groove 33 is formed between the central piece 31 and the tongue piece 32. In the present embodiment, the groove 33 is formed in a straight line extending in the front-rear direction. The thickness of the groove 33 is smaller than the thickness of the central piece 31 and the tongue piece 32. The groove 33 is a portion having a smaller sectional second moment than the central piece 31. Therefore, the tongue piece 32 is more easily bent and deformed than the center piece 31. The holding plate 30 is easily bent and deformed with the groove 33 as a boundary. The groove 33 constitutes a deformation promoting portion that promotes bending deformation of the tongue piece 32 with respect to the central piece 31.

  The connecting member 40 connects the fixing member 20 and the holding plate 30. The connecting member 40 extends in the vertical direction and extends in a direction orthogonal to the fixing member 20 and the holding plate 30. The connecting member 40 is provided with vertical ribs 41 and horizontal ribs 42. A through hole 43 extending in the longitudinal direction of the holding plate 30 is formed in the lower portion of the connecting member 40. As will be described later, the binding band 61 (see FIG. 3) is inserted into the through hole 43. Between the lower part of the connecting member 40 and the central piece 31 of the holding plate 30, substantially triangular reinforcing ribs 44 and 45 are provided. The reinforcing rib 44 extends in the left-right direction, and the reinforcing rib 45 extends in the front-rear direction. In other words, the reinforcing rib 44 extends in a direction parallel to the longitudinal direction of the holding plate 30, and the reinforcing rib 45 extends in a direction orthogonal to the reinforcing rib 44. The reinforcing ribs 44 and 45 are provided on the left and right sides of the front side and the rear side of the connecting member 40, respectively.

  Reinforcing ribs 46 are bridged between the lower sides of the left and right ends of the fixing member 20 and the middle portion of the connecting member 40. The reinforcing rib 46 extends in an oblique direction with respect to the horizontal direction and the vertical direction. As shown in FIG. 5, the fixing member 20, the connecting member 40, and the reinforcing rib 46 form a hole 47 having a substantially right triangle shape when viewed from the front.

  As shown in FIGS. 3 and 5, the fixing member 20 is fixed to the reinforcing bar 2 by a wire 51. The wire 51 is wound around the fixing member 20 through the hole 47. Further, the wire 51 is wound so that a part thereof is positioned in the hole 23 of the fixing member 20 (see FIG. 5). Thereby, a part of the wire 51 directly contacts the rebar 2 through the hole 23. That is, a part of the wire 51 is directly wound around the reinforcing bar 2. The other part of the wire 51 is wound around the holding part 21 and the reinforcing bar introduction part 22 of the fixing member 20, and tightens the holding part 21 so that the holding part 21 holds the reinforcing bar 2. As shown in FIG. 5, the hole 23 is located between the adjacent bulged portions 2 a of the reinforcing bars 2. Therefore, the wire 51 is also located between the bulging portions 2 a of the reinforcing bar 2.

  As shown in FIG. 3, the sleeve 1 is fixed to the holding plate 30 by a binding band 61 made of synthetic resin. The binding band 61 includes a band-shaped band main body 62 and a locking portion 63. The locking portion 63 is formed of a cylindrical body having a substantially rectangular cross section, and a locking claw (not shown) is provided inside the locking portion 63. Although illustration is omitted, locking claws are provided on the inner peripheral surface of the band main body 62 at predetermined intervals in the longitudinal direction. The locking claw of the band main body 62 is not locked by the locking claw of the locking portion 63 when moving in the direction of tightening the band main body 62 (the direction of the solid line arrow in FIG. 5), but the direction of loosening the band main body 62 (see FIG. When moving in the direction of the broken line arrow 5, it is locked by the locking claw of the locking portion 63. The binding band 61 is inserted through the through hole 43 of the connecting member 40. The binding band 61 fixes the sleeve 1 to the holding plate 30 by being wound around the surface of the holding plate 30 and the outer peripheral surface of the sleeve 1.

  Next, a method for fixing the sleeve 1 to the reinforcing bar 2 using the sleeve holder 10 will be described. First, as shown in FIG. 6, the sleeve holder 10 is turned upside down and the fixing member 20 is pushed into the reinforcing bar 2. That is, the sleeve holder 10 is positioned so that both the reinforcing bar introduction portions 22 of the fixing member 20 are located above the reinforcing bar 2 and pushed down as it is. Then, the reinforcing bar 2 comes into contact with the surface of the reinforcing bar introduction part 22. When the sleeve holder 10 is further pushed down, the reinforcing bar introduction part 22 is pushed out by the reinforcing bar 2, and the holding part 21 is pushed up accordingly. As a result, the reinforcing bar 2 enters the inside of the holding part 21. Since the sleeve holder 10 is made of a synthetic resin, when the reinforcing bar 2 enters the inside of the holding part 21, the fixing member 20 is restored so that both reinforcing bar introduction parts 22 approach each other. Then, the reinforcing bar 2 is held by the holding part 21 by the elastic force of the fixing member 20. In this manner, the sleeve holder 10 can be fitted into the reinforcing bar 2 simply by pressing the sleeve holder 10 toward the reinforcing bar 2 from above. In general, it is easier for an operator to apply a force from above. Therefore, the operator can easily fit the sleeve holder 10 into the rebar 2.

  Next, as shown in FIG. 7, the sleeve holder 10 is slid on the reinforcing bar 2 and rotated so that the holding plate 30 is positioned on the lower side. Since the fixing member 20 only holds the reinforcing bar 2 by its own elastic force, the work of rotating the sleeve holder 10 is easy. On the other hand, since the holding portion 21 of the fixing member 20 is formed in a substantially C-shaped cross section, the sleeve holder 10 does not naturally fall from the reinforcing bar 2 even when the sleeve holder 10 is rotated.

  Next, as shown in FIG. 8, the sleeve 1 is fixed to the holding plate 30 using a binding band 61. As described above, since the holding portion 21 of the fixing member 20 holds the rebar 2, the operation of fixing the sleeve 1 can be performed without supporting the sleeve holder 10 from below. Specifically, first, the sleeve 1 is lifted and the outer peripheral surface of the sleeve 1 is brought into contact with the back surface of the holding plate 30. Since the holding plate 30 has the tongue piece 32 that can be easily bent and deformed, when the outer peripheral surface of the sleeve 1 is brought into contact with the holding plate 30, the holding plate 30 is deformed so as to follow the outer peripheral surface of the sleeve 1. As a result, the contact area between the sleeve 1 and the holding plate 30 increases. In this state, the band main body 62 of the binding band 61 is passed through the through hole 43 of the connecting member 40, wound along the outer peripheral surface of the sleeve 1, and then inserted into the locking portion 63. Then, the band main body 62 is tightened. As a result, the binding band 61 is wound around the surface of the holding plate 30 and the outer peripheral surface of the sleeve 1, and the sleeve 1 is held by the holding plate 30.

  Next, the wire 51 is passed through the hole 47 of the sleeve holder 10 from the front or rear, positioned at the same position as the hole 23 of the fixing member 20, and then wound around the fixing member 20 and the reinforcing bar 2 (see FIGS. 3 and 5). ). At this time, if the hole 23 and the bulging portion 2a of the reinforcing bar 2 are in a position where they overlap, it is preferable that the sleeve holder 10 is shifted to the left or right to a position where they do not overlap. Thereby, the wire 51 is positioned between the bulging portions 2a.

  As described above, the sleeve 1 is fixed to the reinforcing bar 2 (see FIG. 1). Thereafter, a mold frame (not shown) is arranged around the reinforcing bar 2 and concrete is placed in the mold frame. That is, ready-mixed concrete is poured into the formwork. At this time, the sleeve 1 receives a force from the flow of the ready-mixed concrete. However, since the sleeve 1 is firmly fixed to the reinforcing bar 2 via the sleeve holder 10, the displacement of the position and posture of the sleeve 1 is suppressed. As shown in FIG. 2, the sleeve holder 10 is embedded in the concrete 3 together with the reinforcing bars 2.

  As described above, the groove 33 is provided in the holding plate 30 of the sleeve holder 10 according to the present embodiment, and the tongue piece 32 is easily bent and deformed. Therefore, when the sleeve 1 is brought into contact with the holding plate 30, the holding plate 30 is deformed so as to follow the outer peripheral surface of the sleeve 1. As shown in FIG. 9A, when the curvature of the sleeve 1 is equal to the curvature of the holding plate 30, the entire back surface of the holding plate 30 contacts the outer peripheral surface of the sleeve 1. As shown in FIG. 9B, when the curvature of the sleeve 1 is smaller than the curvature of the holding plate 30, the tongue piece 32 of the holding plate 30 is expanded by the sleeve 1 and is bent and deformed to the front side. As a result, the contact area between the back surface of the holding plate 30 and the outer peripheral surface of the sleeve 1 is larger than when the holding plate 30 is not deformed. Therefore, the sleeve 1 can be stably fixed to the reinforcing bar 2.

  Thus, the sleeve holder 10 according to this embodiment can be used for a plurality of sleeves 1 having different dimensions. According to the sleeve holder 10, even the sleeve 1 having different dimensions can be stably fixed to the reinforcing bar 2. Accordingly, it is not necessary to prepare sleeve holders having different dimensions for each sleeve 1.

  10 is a cross-sectional view taken along line AA in FIG. As shown in FIG. 10, the holding plate 30 extends to both sides of the sleeve 1 in the axial direction (vertical direction in FIG. 10) rather than the connecting member 40. In other words, the width W2 of the holding plate 30 in the front-rear direction is larger than the width (maximum width) W1 of the connecting member 40 in the front-rear direction. Therefore, a large contact area between the holding plate 30 and the sleeve 1 can be ensured, and the sleeve 1 can be held more stably.

  As shown in FIG. 4, the reinforcing ribs 44 and 45 are provided between the side surfaces of the connecting member 40 (specifically, the front side, rear side, left side, and right side surfaces) and the surface of the central piece 31 of the holding plate 30. Is provided. Therefore, although the width W1 of the connecting member 40 is smaller than the width W2 of the holding plate 30, the rigidity of the connecting member 40 can be maintained high. Therefore, deformation of the sleeve holder 10 (particularly, deformation of the sleeve 1 in the axial direction) can be suppressed, and the positioning accuracy of the sleeve 1 can be increased.

  As shown in FIG. 3, the connecting member 40 is formed with a through hole 43 through which the binding band 61 passes. As shown in FIGS. 4 and 10, side walls 48 are formed on both sides of the through hole 43 in the front-rear direction. Therefore, the positional deviation in the front-rear direction of the binding band 61 is prevented by the side wall 48. Even if an axial force is applied to the sleeve 1 when placing concrete, the position of the binding band 61 does not deviate from the position on the holding plate 30. Therefore, the sleeve 1 can be stably fixed.

Second Embodiment
The holding plate 30 of the sleeve holder 10 according to the first embodiment is a groove 33 recessed in the thickness direction located between the central piece 31 and the tongue piece 32 as a deformation promoting portion that promotes the bending deformation of the tongue piece 32. Had. However, the configuration for facilitating the bending deformation of the tongue piece 32 is not particularly limited.

  As shown in FIG. 11, in the sleeve holder 10 according to the second embodiment, between the center piece 31 and the tongue piece 32 of the holding plate 30, the width direction (in other words, orthogonal to the longitudinal direction of the holding plate 30). A groove 34 recessed in the direction) is formed. The grooves 34 are formed one by one on the left and right sides of the holding plate 30 in the front-rear direction. Therefore, a total of four grooves 34 are formed in the holding plate 30 according to the present embodiment.

  The cross-sectional area of the groove 34 is smaller than the cross-sectional area of the central piece 31, and the cross-sectional secondary moment of the groove 34 is smaller than the cross-sectional secondary moment of the central piece 31. Therefore, the tongue piece 32 is easily bent and deformed. Also in the sleeve holder 10 according to the present embodiment, when the sleeve 1 is brought into contact with the holding plate 30, the holding plate 30 is deformed so as to follow the outer peripheral surface of the sleeve 1. Therefore, the sleeve holder 10 according to the present embodiment can also be used for a plurality of sleeves 1 having different dimensions.

<Third Embodiment>
FIG. 12 shows a sleeve holder 10 according to the third embodiment. In the sleeve holder 10 according to the third embodiment, the thickness of the tongue piece 32 is smaller than the thickness of the center piece 31. Therefore, the tongue piece 32 is more easily bent and deformed than the center piece 31. Also in the sleeve holder 10 according to the present embodiment, when the sleeve 1 is brought into contact with the holding plate 30, the holding plate 30 is deformed so as to follow the outer peripheral surface of the sleeve 1. Therefore, the sleeve holder 10 according to the present embodiment can also be used for a plurality of sleeves 1 having different dimensions.

<Fourth embodiment>
As shown in FIG. 13, in the sleeve holder 10 according to the fourth embodiment, the width (specifically, the width in the front-rear direction) of the central piece 31 of the holding plate 30 is smaller than the width of the tongue piece 32. Also in the present embodiment, the reinforcing rib 44 is provided between the central piece 31 and the connecting member 40. Therefore, the central piece 31 is less likely to bend than the tongue piece 32. In other words, the tongue piece 32 is formed so as to bend and deform more easily than the central piece 31. Therefore, the sleeve holder 10 according to the present embodiment can also be used for a plurality of sleeves 1 having different dimensions.

<Other embodiments>
In the embodiment, the sleeve 1 is a resin tube. However, the type of the sleeve 1 is not limited at all. For example, as shown in FIG. 14, the sleeve may be a paper void tube 1A. The void pipe 1 </ b> A is embedded in the reinforced concrete housing 4 and penetrates the reinforced concrete housing 4. For example, a pipe 6 such as a water supply pipe or a drain pipe can be inserted into the void pipe 1A. The sleeve holder 10 according to each of the embodiments can be effectively used for a plurality of void tubes 1A having different dimensions.

  The tongue piece 32 of the holding plate 30 may be easily bent and deformed on both the front side and the back side, or may be easily bent and deformed only on the front side or only on the back side.

  In each of the embodiments described above, one tongue piece 32 of the holding plate 30 is provided on each of the left and right sides of the central piece 31. However, two or more tongue pieces 32 may be provided on both the left and right sides of the central piece 31. For example, in the first embodiment, another tongue piece 32 may be provided next to the tongue piece 32 via another groove 33.

  In each said embodiment, although the binding band 61 was resin, the material of the binding band 61 is not limited at all. Further, the binding band 61 does not necessarily have a belt shape, and may have a string shape or the like. As the long member wound around the holding plate 30 and the sleeve 1, various members such as a linear shape, a string shape, or a belt shape can be used.

DESCRIPTION OF SYMBOLS 1 Sleeve 2 Reinforcement 4 Reinforced concrete frame 10 Sleeve holder 20 Fixing member 30 Holding plate 31 Central piece 32 Tongue piece 33 Groove 40 Connection member 43 Through-hole 44 Reinforcement rib 45 Reinforcement rib 61 Binding band (long member)

Claims (5)

A sleeve holder for fixing a sleeve, which penetrates a reinforced concrete frame and into which pipe is inserted, to the rebar when placing concrete,
A fixing member fixed to the reinforcing bar;
The sleeve extends in a substantially arc shape, abuts on the sleeve so that at least a part of the back surface thereof contacts the outer peripheral surface of the sleeve, and a long member is wound around the surface and the outer peripheral surface of the sleeve. A holding plate for holding,
A connecting member interposed between the fixing member and the holding plate,
At least the holding plate is formed of resin,
The holding plate has a central piece continuous to the connecting member, and tongue pieces located on both sides of the central piece in a direction along the circumferential direction of the sleeve,
A holder for a sleeve, wherein the tongue piece is formed so as to bend and deform more easily than the central piece.   The sleeve holder according to claim 1, wherein a groove is formed between the central piece and the tongue piece of the holding plate.   The holder for a sleeve according to claim 1 or 2, wherein the holding plate is spread on both sides in the axial direction of the sleeve rather than the connecting member.   The sleeve holder according to claim 3, comprising a reinforcing rib provided between a side surface of the connecting member and a surface of the central piece of the holding plate.   The sleeve holder according to any one of claims 1 to 4, wherein the connecting member is formed with a through hole extending in a circumferential direction of the sleeve and through which the long member is inserted. .

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