JP2010248883A - Sleeve holder and construction method for through hole by use of the sleeve holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To mount a sleeve in a mold by tilting it by the angle set for reinforcing bar simply. <P>SOLUTION: This sleeve holder for fixing the sleeve for forming a through hole inclined in the direction of thickness of beam and wall in a building formed by reinforced concrete includes a clip part 2 being mountable on the reinforcing bar R, an arm part 3 being provided continuously with a side of the clip part 2, and a sleeve holding part 4 provided continuously with the arm part 3 to hold the sleeve S, and this sleeve holder is formed by flexible synthetic resin. A shaft axis of the sleeve holding part 4 is inclined for a shaft axis of the grip part 2 by the set angle exceeding 0&deg; and being less than 180&deg; when viewed on a grip part 2 side. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  TECHNICAL FIELD The present invention relates to a sleeve holder for fixing a sleeve for piping or wiring in a formwork of a beam or a wall when placing concrete in a construction work or the like, and a method for constructing a through hole using the sleeve holder. .

  Generally, a through-hole for passing piping such as water supply, gas, air, or electric wiring is formed in a beam (including a foundation beam) or a wall of a building made of reinforced concrete. This through-hole is usually formed by attaching a sleeve made of a plastic tube such as a paper tube or a vinyl chloride tube in advance to a predetermined position in a beam or wall formwork, and placing concrete there. At this time, the sleeve needs to be securely fixed in the mold so as not to move due to the weight or buoyancy of the concrete when the concrete is placed.

  For this reason, as shown in Patent Documents 1 and 2, a clip portion having a C-shaped cross section that can be attached to the reinforcing bar in the mold, and a substantially horizontal direction in which the sleeve is held substantially perpendicular to the reinforcing bar and the clip portion. There has been proposed a resin sleeve holder including a C-shaped sleeve holding portion and an arm portion that connects the clip portion and the sleeve holding portion with a predetermined interval. Thereby, while attaching the clip part of a sleeve holder to the reinforcing bar in a formwork, by attaching a sleeve to a sleeve holding part, a sleeve can be fixed in a formwork using a sleeve holder. After that, by placing concrete in the mold and burying the sleeve and the sleeve holder, a horizontal through hole can be formed in the thickness direction of the concrete.

  On the other hand, there are cases where a sleeve must be disposed on a beam or wall of a building made of reinforced concrete with its axis inclined with respect to a horizontal plane. For example, as shown in FIG. 17, when the foundation is constructed, a solid foundation K1 whose floor is covered with concrete has been adopted. As a result, the floor rises by the thickness of the solid foundation K1, and the drainage pipe In order to guide the pipe to the drainage basin buried underground on the outdoor side, it is necessary to form a through hole in the thickness direction of the foundation beam K by the sleeve S inclined forward and downward from the indoor side toward the outdoor side.

  At this time, the above-mentioned sleeve holder that holds the sleeve in a horizontal direction perpendicular to the reinforcing bar cannot be used, and the sleeve is connected to the reinforcing bar of the foundation beam with the axis inclined at a set angle with respect to the horizontal plane. It is trying to fix using.

Japanese Patent No. 3692019 Japanese Patent No. 4041866

  By the way, the through-hole formed in a foundation beam etc. is set on the basis of the height of the axial center in the thickness direction center of a reinforced concrete. Here, when the sleeve is attached to the reinforcing bar by using a wire, it is extremely difficult to accurately grasp the height of the axial center of the sleeve at the center in the thickness direction of the concrete. For this reason, it cannot be confirmed whether the sleeve is arranged as designed, and there is a possibility that a sufficient cover thickness of the concrete cannot be ensured between the sleeve and the reinforcing bar.

  In addition, since the inclination angle of the sleeve depends on the inclination angle of the opening end face that has been cut in advance, accuracy is required. However, there is a high possibility that an error will occur in the positioning accuracy of the mold, and the other end is placed on-site. It is necessary to cut with. For this reason, the positioning accuracy of the sleeve is lowered, and not only the field work becomes complicated due to the attachment of the sleeve to the reinforcing bar using the wire, but also a new reinforcing bar is required to fix the wire. There were problems such as becoming.

  The present invention has been made in view of the above problems, and provides a sleeve holder that can be easily mounted in a mold by tilting an angle set with respect to a reinforcing bar. It is an object of the present invention to provide a method for constructing a through hole using a sleeve holder that can efficiently form an inclined through hole by simply attaching a sleeve.

  The sleeve holder of the present invention is a sleeve holder for fixing a sleeve for forming a through-hole inclined in the thickness direction of a beam or wall of a building made of reinforced concrete, which is made of a synthetic resin having flexibility and attached to the reinforcing bar A clip portion, an arm portion provided continuously to the side of the clip portion, and a sleeve holding portion provided continuously to the arm portion and holding the sleeve, wherein the axis of the sleeve holding portion is on the clip portion side. When viewed from above, it is inclined at a set angle exceeding 0 ° and less than 180 ° with respect to the axial center of the clip portion.

  According to the present invention, the clip portion can be attached to an arbitrary position of the reinforcing bar and the sleeve can be easily attached to the sleeve holding portion by being formed of a flexible synthetic resin. At this time, the sleeve can be attached to the reinforcing bar at a set angle by tilting the set center of the sleeve holding part with respect to the axis of the clip part. In addition, since the clip portion and the sleeve holding portion are continuously provided via the arm portion, it is possible to ensure the cover thickness of the concrete with respect to the reinforcing bars by the length of the arm portion.

  As a result, the sleeve can be easily mounted in the mold with an angle inclined with respect to the reinforcing bar.

  Here, the cross-sectional shape of the clip portion is not particularly limited, and may be a substantially C shape, a square shape, a rhombus shape, or the like.

  Further, the cross-sectional shape of the arm portion is not particularly limited, and is a cross shape, a U shape, a semicircular shape, a T shape, a V shape, an L shape, an O shape, a Y shape, an I shape, H The shape may be a letter shape, an M shape, a Z shape, a U shape, an S shape, or the like, and an arbitrary shape can be selected.

  Further, the shape of the sleeve holding portion is not particularly limited, and may be a C shape, a square shape, a rhombus shape, a semicircular shape, or the like.

  In the present invention, it is preferable that one of the upper and lower end surfaces of the clip portion is set as a reference surface, and the axis of the clip portion and the axis of the sleeve holding portion intersect with each other when viewed from the clip portion side. As a result, the axial center of the sleeve holding portion is located at the intersection of the reference surface of the clip portion and the axial center of the clip portion, so the clip portion is mounted by measuring the height to the reference surface of the clip portion. Therefore, the height of the axial center of the sleeve attached to the sleeve holding portion on the axial center of the reinforcing steel can be grasped, and the set positioning accuracy of the sleeve can be ensured.

  In the present invention, it is preferable that the sleeve holding portion is formed of a main body portion having an opening for fitting and holding the sleeve, and the distal end of the arm portion is connected to the outer peripheral surface of the main body portion. Thereby, the sleeve holding part can be connected to the arm part irrespective of the sectional shape of the arm part and the inclination angle of the sleeve holding part with respect to the clip part.

  Here, as a cross-sectional surface shape of the main body portion of the sleeve holding portion, a U shape, an O shape, a square shape, a triangular shape, an M shape, and the like can be adopted in addition to a plate shape. In this case, if necessary, a flat portion may be formed at the corresponding position of the main body portion where the arm portion is continuously provided, and the tip of the arm portion may be provided continuously.

  In the present invention, the sleeve holding portion is formed of a plate-like main body portion having an opening for fitting and holding the sleeve, and vertical reinforcing ribs formed on the outer peripheral surface of the main body portion, and directly on the outer peripheral surface of the main body portion. Or it is preferable that the front-end | tip of an arm part is connected with the boss | hub formed in the outer peripheral surface. Thereby, the sleeve holding part can be connected to the arm part irrespective of the sectional shape of the arm part and the inclination angle of the sleeve holding part with respect to the clip part.

  Here, the cross-sectional shape of the longitudinal reinforcing rib is not particularly limited, and may be I-shaped, cross-shaped, T-shaped, Y-shaped, Z-shaped, S-shaped, semicircular, etc. The shape can be selected.

  In the main body portion, the sleeve holding portion has a plate-like main body portion having an opening to which the sleeve is fitted and held, a longitudinal reinforcing rib formed on the outer peripheral surface of the main body portion, and the opening of the main body portion substantially opposite to the diameter direction. The outer peripheral surface is formed of horizontal reinforcing ribs that are formed orthogonal to the vertical reinforcing ribs, and connecting portions provided at the distal ends of the arm portions are connected to the base ends of the vertical reinforcing ribs and the horizontal reinforcing ribs. It is preferable. Thereby, the reinforcing rib of the sleeve holding portion can be easily connected to the connecting portion of the arm portion regardless of the sectional shape of the arm portion and the inclination angle of the sleeve holding portion with respect to the clip portion.

  Here, the cross-sectional shape of the longitudinal reinforcing rib is not particularly limited, and may be I-shaped, cross-shaped, T-shaped, Y-shaped, Z-shaped, S-shaped, semicircular, etc. The shape can be selected.

  In the present invention, it is preferable that the clip member and the sleeve holding portion, or the clip member or the sleeve holding portion, are each provided with a binding material for the binding member and a fixing portion for the binding material with an opening interposed therebetween. Thereby, when the clip part is attached to the reinforcing bar, the binding material can be inserted into the fixing part and the clip part can be tightened so that the opening interval is narrowed, and the holding force of the clip part with respect to the reinforcing bar can be increased. Further, when the sleeve is attached to the sleeve holding portion, the binding material can be inserted into the fixing portion to tighten the sleeve holding portion so that the opening interval is narrowed, and the holding force of the sleeve holding portion with respect to the sleeve can be increased. .

  Here, the binding member is not limited as long as the clip portion and the sleeve holding portion can be tightened, and the number thereof is not limited to one and may be plural.

  In the present invention, it is preferable that the sleeve holding portion is detachably connected to the arm portion while changing a rotational angle position around a horizontal axis. As a result, the sleeve holding portion can be connected to the arm portion by tilting the axis of the sleeve holding portion with respect to the axis of the clip portion at any angle around the horizontal axis. Can be installed with an angle inclination.

  Here, as a means for connecting the arm portion and the sleeve holding portion by changing the rotation angle around the horizontal axis, for example, a shaft portion formed with a convex portion such as a spline shaft or serration and a boss portion formed with a concave portion, or And screw connection using male and female screws.

  The method for constructing a through-hole using a sleeve holder according to the present invention is the use of a sleeve holder according to any one of claims 1 to 7 in a reinforcing bar arranged in a beam or wall form of a building made of reinforced concrete. Attach the clip part, attach the sleeve with both ends cut in advance to the sleeve holding part of this sleeve holder corresponding to the angle of inclination of the sleeve, and then fix the formwork by bringing the inner surface into contact with each open end face of the sleeve Then, concrete is placed in a mold, and a sleeve and a sleeve holder are embedded in the concrete to form a through hole inclined in the thickness direction of the concrete.

  According to the present invention, when forming a through-hole inclined in the thickness direction of a beam or wall of a building made of reinforced concrete, the through-hole can be formed efficiently by simply attaching the sleeve to a set inclination angle.

  According to the sleeve holder of the present invention, the sleeve inclined at an angle set with respect to the reinforcing bar can be easily attached in the mold.

  Moreover, according to the construction method of the through-hole using the sleeve holder of the present invention, the inclined through-hole can be efficiently formed by simply attaching the sleeve in the mold.

It is a perspective view which shows one Embodiment of the sleeve holder of this invention with a sleeve and a reinforcing bar. It is a front view of the sleeve holder of FIG. It is a side view of the sleeve holder of FIG. It is a top view of the sleeve holder of FIG. It is a perspective view which shows the modification of the sleeve holder of this invention. It is a perspective view which decomposes | disassembles and shows the other modification of the sleeve holder of this invention. It is the front view which shows another modification of the sleeve holder of this invention, and A section expanded sectional view. It is a perspective view which shows the modification of the clip part of the sleeve holder of this invention. It is a perspective view which shows the other modification of the clip part of the sleeve holder of this invention. It is a perspective view which abbreviate | omits and shows some modifications of the arm part of the sleeve holder of this invention. It is a front view which shows the modification of the sleeve holding part of the sleeve holder of this invention. It is a front view which shows the other modification of the sleeve holding part of the sleeve holder of this invention. It is a front view which shows another modification of the sleeve holding part of the sleeve holder of this invention. It is a perspective view which abbreviate | omits and shows the aspect which connects the sleeve holding | maintenance part and arm part of the sleeve holder of this invention partially. It is a perspective view which abbreviate | omits and shows some modifications of the main-body part in the sleeve holding part of the sleeve holder of this invention. It is a perspective view which omits and shows a part of modification of the longitudinal reinforcement rib in the sleeve holding part of the sleeve holder of the present invention. It is sectional drawing of the foundation which formed the through-hole by the inclined sleeve in the foundation beam.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 4 show an embodiment of the sleeve holder 1 of the present invention.

  The sleeve holder 1 includes a clip portion 2, an arm portion 3 provided continuously to the side of the clip portion 2, and a sleeve holding portion 4 provided continuously to the tip of the arm portion 3, and is made of a suitable material such as polypropylene. It is formed by injection molding a thermoplastic resin having the following flexibility.

  The clip portion 2 is formed in a substantially C-shaped cross section with a part of the circular tube opened, and is set to be slightly smaller than the outer diameter of the reinforcing bar R into which the inner diameter is fitted. And the clip part 2 has the guide part 2a folded back toward each other so that it can be easily fitted into the reinforcing bar R at the opening edge of the clip.

  The arm portion 3 includes a horizontal portion 31 and a vertical portion 32 having a cross-shaped cross section, and a disk-shaped connection portion 33 integrally connected to the distal ends thereof, and the base ends of the horizontal portion 31 and the vertical portion 32 are clipped. It is continuously provided integrally with the outer peripheral surface facing the opening of the portion 2 substantially in the diameter direction. And the notch part 32a for inserting binding tools, such as a wire, is formed in the upper and lower ends of the base part side of the vertical part 32 in the arm part 3, The clip part 2 inserts a binding tool in the notch part 32a. The holding force of the clip part 2 with respect to the reinforcing bar R can be increased.

  The sleeve holding portion 4 is formed in a substantially C shape with a part of a short circular tube opened, and a base end thereof is integrally connected to the connection portion 33 of the arm portion 3. That is, the sleeve holding portion 4 is formed in a substantially C-shaped cross section, and a guide portion 41a folded back outward from each other so that the sleeve R can be easily fitted into the opposite opening edge. The formed main body portion 41, the longitudinal reinforcing rib 42 formed integrally with the outer peripheral surface of the main body portion 41 except for the guide portion 41a, and the outer peripheral surface facing the opening of the main body portion 41 in a substantially diametrical direction are integrally connected. Each of the base ends of the vertical reinforcing rib 42 and the horizontal reinforcing rib 43 is integrally connected to the connecting portion 33 of the arm portion 3. And the internal diameter of the main-body part 41 of the sleeve holding | maintenance part 4 is set a little smaller than the outer diameter of the sleeve S hold | maintained, and it expands with a moderate softness | flexibility.

  Here, the axis C4 of the sleeve holding portion 4 is set to be inclined with respect to the axis C2 of the clip portion 2 by a set angle (in the embodiment, 45 °). Specifically, one end surface (the upper end surface in FIGS. 1 to 3) of the clip portion 2 is set as a reference surface, the horizontal plane P2 including the upper end surface of the clip portion 2, and the main body portion 41 of the sleeve holding portion 4. The plane P4 including one of the end faces is inclined by 45 °, and the axis C2 of the clip portion 2 and the axis C4 of the sleeve holding portion 4 are on the side where the planes P2 and P4 intersect. It is set to be located. That is, the axis C2 of the clip portion 2 and the axis C4 of the sleeve holding portion 4 intersect with each other at an angle of 45 ° when viewed from the clip portion 2, that is, in the side view shown in FIG. Is positioned on the side where the horizontal plane P2 including the upper end surface which is the reference plane of the clip portion 2 and the plane P4 including one end surface of the main body portion 41 of the sleeve holding portion 4 intersect.

  As the reference surface of the sleeve holder 1, a marking 2x (see FIG. 2) such as an arrow is attached to the outer peripheral surface of the clip portion 2 by embossing or the like, and the side indicated by the marking 2x is the reference surface. I can understand that.

  Therefore, it can be grasped that the axis C4 of the sleeve holding portion 4 is located on the intersection of the reference surface of the clip portion 2 and its axis C2, and when the sleeve holder 1 is attached to the reinforcing bar R, the clip portion By measuring the height up to the reference plane No. 2, it is possible to grasp that the axis C4 of the sleeve holding portion 4, that is, the axis of the sleeve S is positioned on the height. As a result, it is possible to grasp whether or not the sleeve S is installed at a set position in a mold (not shown), and adjust the set position to the set position. Can do.

  Further, since the base ends of the longitudinal reinforcing rib 42 and the lateral reinforcing rib 43 of the sleeve holding portion 4 are connected to the connecting portion 33 of the arm portion 3, it is independent of the horizontal portion 31 and the vertical portion 32 of the arm portion 3. The reinforcing ribs 42 and 43 can be integrally connected to the arm portion 3 by being inclined at an arbitrary angle.

  Next, a procedure for attaching the sleeve S to the mold using the sleeve holder 1 configured as described above will be described.

  First, the clip part of the sleeve holder 1 is mounted on one reinforcing bar R in a state where the reinforcement of the beams and walls is assembled and the formwork panel is not yet built or only one side of the opposite formwork panel is built. 2 is mounted, and the sleeve S is fitted into the sleeve holding portion 4 to position the sleeve S.

  That is, since the axial center of the sleeve S held by the sleeve holding part 4 is positioned on the axial center C2 of the clip part 2 on the reference surface of the sleeve holder 1, the upper part of the clip part 2 that is the reference surface of the sleeve holder 1 is located. The height to the end face is measured, and it is grasped whether the axis of the sleeve S in the middle of the concrete thickness direction is positioned as designed. If necessary, the mounting position of the sleeve holder 1 is moved in the vertical direction along the reinforcing bar, and the height of the reference surface is adjusted to be positioned at the design position.

  Note that both ends of the sleeve S are inclined at a set angle (45 ° in this embodiment) with respect to the axial center and cut in advance in a factory or the like, and the interval between the inclined both end surfaces is the thickness of the concrete. It is set to (space between opposing formwork panels). Thereby, the accuracy of the sleeve S is ensured.

  Next, the formwork panels facing the opposite open ends of the held sleeve S are brought into contact with each other, and the formwork is fastened and fixed by a support material such as a foam tie. Then, concrete is placed in the formwork, and the sleeve S and the sleeve holder 1 are buried and fixed in the concrete. If the mold is removed after waiting for the concrete to harden, an inclined through hole is formed by the sleeve S.

  As described above, by using the sleeve holder 1 of the present invention, it is possible to form the through-hole by attaching the sleeve S at a set inclination angle very easily without using a tool. .

  Incidentally, FIG. 5 shows a modification of the embodiment of the sleeve holder 1 of the present invention.

  In the sleeve holder 1, the binding body 51 of the binding member 5 and the fixing portion 52 thereof are integrally provided on the clip portion 2 with the guide portions 3 a facing each other of the clip portion 2, and the main body portion 41 in the sleeve holding portion 4. The bundling body 51 of the bundling member 5 and its fixing portion 52 are integrally provided on the sleeve holding portion 4 with the opposite guide portions 41a interposed therebetween. Thereby, for example, when the clip part 2 is attached to the reinforcing bar R having a diameter slightly larger than the corresponding diameter, the binding body 51 is inserted into the fixing part 52 and fastened to be fixed. You can increase your power. Similarly, when the sleeve S having a diameter slightly larger than the corresponding diameter is attached to the sleeve holding portion 4, the binding force 51 is inserted into the fixing portion 52 and fastened to be fixed. Can be increased.

  The type of the binding member 5 is not limited. For example, a binding band in which a large number of teeth are formed at intervals in the longitudinal direction and a locking claw that can be engaged with the teeth of the binding band are provided rotatably. From a bundling member consisting of a fixing part, a bundling string provided with a number of humps spaced in the longitudinal direction, and a fixing part provided with a claw that elastically deforms the hump of the bundling string to allow passage and prevent return And a binding member.

  Further, the number of binding members 5 provided in the clip portion 2 or the sleeve holding portion 4 is not limited to one, and a plurality of binding members 5 may be provided.

  FIG. 6 shows another modification of the sleeve holder 1 of the present invention.

  The sleeve holder 1 is configured such that the arm portion 3 and the sleeve holding portion 4 can be detachably connected at a position rotated by an arbitrary angle around a horizontal axis.

  Specifically, the boss portion 34 is provided at the distal end portion of the arm portion 3, while the shaft portion 44 is provided at the proximal end portion of the sleeve holding portion 4. The boss portion 34 is formed with a plurality of tooth-like or mountain-shaped grooves (concave portions) 341 at intervals in the circumferential direction on the inner circumferential surface, and the shaft portion 44 is circumferentially arranged on the outer circumferential surface. A plurality of tooth-shaped or mountain-shaped grooves (convex portions) 441 that can be fitted into the tooth-shaped or mountain-shaped grooves (recessed portions) 341 of the boss portion 34 are formed at intervals, and these boss portions are formed. The groove 34 341 and the groove 441 of the shaft portion 44 can be fitted at an arbitrary rotation angle around the horizontal axis. Thereby, the rotation angle of the axial part 44 with respect to the boss | hub part 34 can be changed by the angle which the adjacent groove part 341 (441) formed in the circumferential direction makes | forms. For example, by forming 24 groove portions 341 and 441 in the circumferential direction, an angle formed by the shaft portion 44, that is, the sleeve holding portion 4 with respect to the clip portion 2 via the boss portion 34, that is, the arm portion 3. Can be changed in steps of 15 °.

  The boss portion 34 of the arm portion 3 is provided with a pair of locking claws 35, and the sleeve holding portion 4 is provided with a pair of locking claws 35 and a flange 45 that is detachable from the shaft portion 44. When the boss portion 34 is fitted, the locking claw 35 of the arm portion 3 can be locked to the flange 45 of the sleeve holding portion 4 to prevent the sleeve holding portion 4 from coming out of the arm portion 3.

  Further, the rotation angle from the reference position is marked on the outer peripheral surface of the boss part 34, and the clip part can be obtained by adjusting the reference point 45x marked on the flange part 45 of the sleeve holding part 4 to an arbitrary angle position. 2, the sleeve holding portion 4 can be inclined by an angle at which the reference point 45 x is located.

  In this case, the boss part may be provided on the sleeve holding part 4 and the shaft part may be provided on the arm part 3, and the boss part 34 and the shaft part 44 are not shown in detail but are arranged on the outer peripheral surface in the circumferential direction. Rotate by changing the engagement position of the nail with respect to the tooth by joining a disk with a large number of teeth and a disk with a plurality of claws that can be fitted to the teeth of the disk and rotating it around the horizontal axis The angle may be changed.

  Further, instead of the boss portion 34 and the shaft portion 44, the sleeve holding portion 4 can be formed at a set inclination angle with respect to the arm portion 3 by screw coupling of a male screw and a female screw. For example, as shown in FIG. 7, the arm portion 3 is provided with the female thread portion 36, while the sleeve holding portion 4 is provided with the male screw portion 46, the nut 47 is screwed into the male screw portion 46, and the male screw portion 46 of the sleeve holding portion 4 is The sleeve holding portion 4 may be fixed to the screwed position by the action of the double nut by screwing into the female screw portion 36 of the arm portion 3 and tightening the nut 47 toward the female screw portion 36 at an arbitrary screwing position. .

  When such a screw connection using a male screw and a female screw is used, there is an advantage that the angle can be adjusted steplessly.

  In the embodiment shown in FIGS. 1 and 5, the sleeve holder 1 in which the sleeve holding portion 4 is inclined by 45 ° with respect to the clip portion 2 is illustrated, but is not limited to 45 ° and exceeds 0 °. If it is less than 180 °, it can be set to an arbitrary angle. For example, in the range of 5 ° to 175 °, the sleeve holding portion 4 inclined at an angle of 5 ° or 10 ° with respect to the clip portion 2 can be prepared.

  By the way, in the above-described embodiment, the clip portion 2 is formed in a substantially C-shaped cross section corresponding to the reinforcing bar R having a circular cross section, while the arm portion 3 is formed in a cross-shaped cross section to form a sleeve S having a circular cross section. Correspondingly, the case where the sleeve holding portion 4 is formed in a substantially C shape has been illustrated, but the present invention is not limited to such a shape, and can be formed in an arbitrary shape.

  For example, the clip part 2 may be formed in a cross-sectional square shape (see FIG. 8) or a cross-sectional rhombus shape (see FIG. 9), and the cross-sectional shape of the arm part 3 is shown in FIGS. U-shaped, semi-circular, T-shaped, V-shaped, L-shaped, O-shaped, Y-shaped, I-shaped, H-shaped, M-shaped, Z-shaped, U-shaped , S-shaped, I-shaped combination, T-shaped combination, etc. In this case, the cross-sectional shape of the arm portion 3 may be one obtained by rotating or reversing these cross-sectional shapes, or a combination of these cross-sectional shapes.

  Further, the sleeve holding portion 4 may be formed in a square shape (see FIG. 11), a diamond shape (see FIG. 12), or a semicircular shape (see FIG. 13).

  Further, as the arm portion 3, it is not always necessary to provide the connection portion 33, and the arm portion 3 may be directly connected to the sleeve holding portion 4. For example, a circular or square boss 44 is formed at a position corresponding to the arm holding portion 4 of the sleeve holding portion 4 (see FIGS. 14A and 14B), or the arm portion 3 is continuously provided. A thick portion 411 may be formed in the main body portion 41 at the corresponding position (see FIG. 14C), and the tip of the arm portion 3 may be provided continuously. Further, as shown in FIG. 14 (d), the longitudinal reinforcing ribs 42 and the lateral reinforcing ribs 43 at corresponding positions where the arm portions 3 are connected are removed, and the tip of the arm portion 3 is connected directly to the outer peripheral surface of the main body portion 41. You may set up.

  In addition to the plate shape, the cross-sectional shape of the main body 41 of the sleeve holding portion 4 is also semicircular, M-shaped, triangular, circular, square as shown in FIGS. In addition to being formed in a U-shape and the like, the reinforcing rib can be omitted, and the vertical reinforcing rib 42 can be formed in a T-shape as shown in FIGS. 16A to 16C in addition to the I-shaped cross section. , Y-shape, Z-shape, semicircular shape, etc. can also be adopted.

DESCRIPTION OF SYMBOLS 1 Sleeve holder 2 Clip part 3 Arm part 33 Connection part 4 Sleeve holding part 41 Main body part 42,43 Reinforcement rib 44 Boss Cr Rebar axis Cs Sleeve axis R Reinforcement S Sleeve

Claims (8)

  A sleeve holder for fixing a sleeve for forming a through-hole inclined in the thickness direction of a building beam or wall made of reinforced concrete, made of flexible synthetic resin, and a clip portion that can be attached to a reinforcing bar, and a clip An arm portion that is provided continuously to the side of the portion, and a sleeve holding portion that is provided continuously to the arm portion and that holds the sleeve, and the axis of the sleeve holding portion when viewed from the clip portion side. A sleeve holder characterized by being inclined at a set angle of more than 0 ° and less than 180 ° with respect to the heart.   2. The sleeve holder according to claim 1, wherein one end surface of the clip portion is set as a reference surface, and the axis of the clip portion and the axis of the sleeve holding portion intersect with each other when viewed from the clip portion side. Sleeve holder characterized by   3. The sleeve holder according to claim 1, wherein the sleeve holding portion is formed of a main body portion having an opening for fitting and holding the sleeve, and a tip end of the arm portion is continuously provided on the outer peripheral surface of the main body portion. Characteristic sleeve holder.   The sleeve holder according to claim 1 or 2, wherein the sleeve holding portion is formed of a plate-like main body portion having an opening for fitting and holding the sleeve, and vertical reinforcing ribs formed on the outer peripheral surface of the main body portion, A sleeve holder characterized in that the tip of an arm portion is connected to a boss formed directly on the outer peripheral surface of the main body portion or on the outer peripheral surface.   The sleeve holder according to claim 1 or 2, wherein the sleeve holding part has a plate-like main body part having an opening for fitting and holding the sleeve, a longitudinal reinforcing rib formed on the outer peripheral surface of the main body part, It is formed of lateral reinforcing ribs formed perpendicular to the longitudinal reinforcing ribs on the outer peripheral surface substantially opposite to the opening in the diametrical direction, and provided at the distal ends of the arm portions at the base ends of these vertical reinforcing ribs and lateral reinforcing ribs. A sleeve holder characterized in that the connecting portion is continuously provided.   The sleeve holder according to any one of claims 1 to 5, wherein the clip member and the sleeve holding unit, or the clip member or the sleeve holding unit sandwich the opening of the binding member and the binding member fixing member. Sleeve holders characterized by being provided respectively.   7. The sleeve holder according to claim 1, wherein a sleeve holding portion is detachably connected to the arm portion while changing a rotational angle position around a horizontal axis. .   The clip portion of the sleeve holder according to any one of claims 1 to 7 is attached to a reinforcing bar arranged in a form of a beam or wall of a building made of reinforced concrete, and the sleeve holding portion of the sleeve holder is previously attached to the sleeve holding portion of the sleeve holder. After attaching a sleeve whose both ends are cut according to the angle of inclination of the sleeve, the inner surface is brought into contact with each open end face of the sleeve to fix the formwork, and concrete is placed in the formwork to place the sleeve and the sleeve. A method of constructing a through hole using a sleeve holder, wherein the holder is embedded in concrete to form a through hole inclined in the thickness direction of the concrete.

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