JP2009185452A - Sleeve fixing implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sleeve fixing implement which enables a sleeve for securing a space for piping and wiring to be firmly fixed to reinforcements in a form with the arranged reinforcements in such a manner as not to come off, and which can suppress the corrosion of the reinforcements. <P>SOLUTION: In this sleeve fixing implement 10, a reinforcement mounting portion 11 and a sleeve mounting portion 21 are arranged in such a manner that axis lines are orthogonal to each other, and connected together by means of a connecting portion 18. The reinforcement mounting portion 11 is fitted into the reinforcement by stretching first and second mounting pieces 12 and 16; and a third locking protrusion 17, which is provided on the leading end side inner peripheral surface of the second mounting piece 16, is locked to a first locking protrusion 13 which is provided on the leading end side of the first mounting piece 12. In the sleeve mounting portion 21, the sleeve 28 is inserted and fitted by stretching the leading end sides of upper and lower mounting pieces 22 and 23; and the lower mounting piece 23 covers a leading end of the upper mounting piece 22, so that a third protrusion 26 can be locked and fastened to a first protrusion 24 at the leading end of the upper mounting piece 22. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is used to fix a sleeve that secures a space for piping or electric wiring of water supply or gas or the like in a formwork provided with reinforcing bars when forming beams or walls made of reinforced concrete. The present invention relates to a sleeve fixture.

A through-hole is formed in a reinforced concrete beam or wall for housing or the like so as to allow piping such as water or gas or electric wiring to pass therethrough. Conventionally, as to the formation of this through hole, as shown in Patent Document 1, for example, a clip portion having a substantially C-shaped cross section that can be attached to a reinforcing bar, an arm portion projecting to the side of this clip portion, and this arm portion A sleeve fixture having a substantially C-shaped sleeve holding portion that holds a sleeve continuously provided in the direction perpendicular to the reinforcing bar is used. The clip part of the sleeve fixing tool is fitted and fixed to the vertical reinforcing bar, the both ends of the sleeve held horizontally by the sleeve holding part are fixed with the mold frame, and concrete is placed between the mold frames in this state. As a result, a reinforced concrete beam or the like is formed.
JP 2005-256579 A

  However, in the case of this sleeve fixing tool, since the clip part is only attached to the reinforcing bar by the clip part having a substantially C-shaped cross section, a large force is applied by the concrete to the entire sleeve fixing tool when placing concrete, so the clip part is in the reinforcing bar. There is a problem that it is easy to come off. Therefore, it is necessary to increase the fixing strength of the clip part to the reinforcing bar by binding the clip part to the reinforcing bar with a wire or the like. However, by tying the sleeve fixing tool to the reinforcing bar one by one with a wire or the like, there is a problem that field work becomes complicated and requires a long time. In addition, there is a problem that the reinforcing bars are easily corroded due to the contact between different kinds of metals of the wire and the reinforcing bars. Further, since the sleeve is also held by the substantially C-shaped sleeve holding portion, the sleeve is likely to fall off from the sleeve holding portion, similarly to the relationship between the clip portion and the reinforcing bar, and for this reason, the opposite open end of the sleeve holding portion. It was necessary to tie the hook portions provided at the edge portions folded back in the widening direction with a wire or the like.

  Further, the sleeve fixing tool is also made of a hard resin material that is difficult to be deformed in order to prevent the sleeve from falling off the reinforcing bar or the sleeve. However, stiffening the sleeve fixture in this way makes it difficult to expand the clip part and sleeve holding part, making it difficult to attach the reinforcing bar and sleeve to the clip part and sleeve holding part, especially in winter. If the resin becomes hard, the clip portion and the sleeve fixing portion are liable to be damaged when the reinforcing bars and the sleeve are attached to the clip portion and the sleeve fixing portion. Even if the resin is hard, it is possible to make it difficult to break the fixture even if the resin is hard, but this increases the cost of the resin material and increases the price of the sleeve fixture. There is a problem. Furthermore, since the clip portion and the sleeve fixing portion have a single inner diameter, it is necessary to use members having different diameters when the thickness of the reinforcing bar and the outer diameter of the sleeve are different. For this reason, it is necessary to prepare a plurality of types of sleeve fixtures having different diameters, which increases the manufacturing cost and the complexity of component management.

  The present invention is intended to solve such a problem, and in a formwork in which reinforcing bars are disposed, a sleeve for securing a space for piping and wiring can be firmly fixed so as not to fall off the reinforcing bars. An object of the present invention is to provide an inexpensive sleeve fixture that can suppress corrosion of reinforcing bars. Another object of the present invention is to provide a sleeve fixture that can cope with reinforcing bars and sleeves having different diameters in one type.

  In order to achieve the above object, the structural feature of the present invention is that it is cylindrical and separated at one place in the circumferential direction, and the cross section perpendicular to the axis is substantially C-shaped, and is fitted and fixed to the reinforcing bar. An elastically deformable rebar attachment part, which is cylindrical and is separated at one location in the circumferential direction, is substantially C-shaped, and is arranged so that the rebar attachment part and the axis are orthogonal to each other, and the cylindrical sleeve A sleeve fixing device provided with an elastically deformable sleeve mounting portion that is attached by fitting, and a connecting portion that connects between the reinforcing bar mounting portion and the sleeve mounting portion. A first locking means that overlaps the parts and releasably locks each other is provided, and the sleeve mounting portion has second locking means that the both side parts overlap each other and are releasably locked to each other. It is in providing.

  In the present invention configured as described above, the sleeves are formed by pushing both ends of the elastically deformable reinforcing bar mounting portion so as to be engaged with the reinforcing bar and locking the both side portions with each other by the first locking means. The fixing tool is firmly fixed to the reinforcing bar by the reinforcing bar mounting portion. Furthermore, the sleeve is firmly clamped and fixed to the sleeve mounting portion by expanding both ends of the elastically deformable sleeve mounting portion so that the sleeve is fitted and the both side portions are locked to each other by the second locking means. . As a result, in the present invention, since the sleeve fixing tool is firmly fastened and fixed to the reinforcing bar by the reinforcing bar mounting portion, even if a large force is applied to the entire sleeve fixing tool during concrete placing, the reinforcing bar of the sleeve fixing tool is used. It is possible to surely prevent the drop-off from. Further, since the sleeve is also firmly tightened and fixed to the sleeve mounting portion, the sleeve is reliably prevented from falling off from the sleeve mounting portion.

  Furthermore, according to the present invention, the reinforcing bar mounting portion is fixed to the reinforcing bar easily and in a short time by the first locking means, and the fixing of the sleeve by the sleeve mounting portion is easily and shortly performed by the second locking means. Since it is performed in time, and it is not necessary to bind with a wire or the like, the installation work of the sleeve fixing tool at the site is simplified, and the work time is greatly shortened. Further, according to the present invention, since it is not necessary to bind the sleeve fixing tool with a wire or the like, the problem of easy corrosion of the rebar due to the contact between different types of metal of the wire and the rebar is also solved. Furthermore, according to the present invention, the reinforcing bar attaching portion is fixed to the reinforcing bar by the first locking means, and the sleeve fixing portion is fixed by the second locking means. Since the strength of the part itself is not a problem, a miscellaneous material such as a recycled material can be used as the resin material, and as a result, the manufacturing cost of the sleeve fixture can be reduced.

  Further, in the present invention, the reinforcing bar mounting portion has a substantially cylindrical shape extending from the connecting portion to both sides, and the first locking means is provided on the inner peripheral surface on the distal end side of the semi-cylindrical portion extending to one side. A projecting first projecting part, and a second projecting part that releasably engages with the first projecting part projecting at least in the circumferential direction of the outer peripheral surface of the semi-cylindrical portion extending to the other side Is preferably provided. As a result, the cylindrical portion is expanded and fitted to the reinforcing bar, and the attachment position is determined while adjusting the attachment position of the reinforcing bar attachment part to the reinforcing bar, and the first protrusion and the second protrusion are engaged with each other. By stopping, the reinforcing bar mounting portion can be firmly and easily attached to the specified mounting position of the reinforcing bar. In addition, by providing the second protrusions at a plurality of locations apart in the circumferential direction, the diameter of the reinforcing bar attachment portion can be changed depending on the position of the second protrusions that the first protrusions engage. Therefore, it is possible to cope with a plurality of types of reinforcing bars having different diameters with a single type of sleeve fixing tool. As a result, in the present invention, the sleeve fixing tool is provided at low cost, and the labor of managing the sleeve fixing tool is greatly reduced.

  In the present invention, the sleeve mounting portion has a substantially cylindrical shape extending on both sides from the coupling portion, and the second locking means is on the inner peripheral surface on the tip side of the semi-cylindrical portion extending to one side. Providing a first protrusion that protrudes and a second protrusion that releasably engages with the first protrusion that protrudes in at least one circumferential direction of the outer peripheral surface of the semi-cylindrical portion that extends to the other side. Is preferred. As a result, the cylindrical portion of the sleeve mounting portion is expanded and fitted into the sleeve, and the first protrusion and the second protrusion are locked together while the mounting position is determined while adjusting the mounting position of the sleeve mounting portion. As a result, the sleeve mounting portion can be firmly and easily attached to the specified mounting position of the sleeve. In addition, by providing the second protrusions at a plurality of locations apart in the circumferential direction, the diameter of the sleeve mounting portion can be changed depending on the position of the second protrusions that the first protrusions lock. Therefore, a plurality of types of sleeves having different diameters can be handled with a single type of sleeve fixing tool. As a result, in the present invention, the sleeve fixing tool is provided at low cost, and the labor of managing the sleeve fixing tool is greatly reduced.

  Further, in the present invention, the reinforcing bar mounting portion has a substantially semi-cylindrical shape extending to both sides from the connecting portion, and the first locking projection protruding outward at the outer peripheral surface on the distal end side of the portion extending to one side. A first mounting piece provided with a second locking projection that protrudes outward at a position near the connecting portion and a distal end of a portion extending to the other side of the first mounting piece can be bent and deformed A first semi-cylindrical shape that is attached to the inner peripheral surface on the distal end side and releasably engages with the first latching convex part and the second latching convex part, respectively. A second mounting piece provided with a third locking projection that constitutes the first locking means together with the two locking projections may be provided.

  In the present invention, for a reinforcing bar having a large diameter, the first mounting piece having a substantially semi-cylindrical shape extending on both sides from the connecting portion is expanded and fitted to the reinforcing bar, and is bent and deformed to the other end of the first mounting piece. A third locking projection provided on the inner peripheral surface of the second mounting piece on the tip side of the second mounting piece is provided by covering the tip side of the second mounting piece having a substantially semi-cylindrical shape so that it can be attached. Then, the front end of the first mounting piece is locked to a first locking projection that protrudes outward and extends in the axial direction. Thereby, a reinforcing bar attachment part is attached in the state fastened firmly to a reinforcing bar with a large diameter. For a reinforcing bar with a small diameter, the first mounting piece having a substantially semi-cylindrical shape is expanded and fitted to the reinforcing bar, the second mounting piece is covered with the first mounting piece, and the third locking convex portion is set to the first locking piece. It is made to latch on the 2nd latching convex part which protruded outward in the vicinity of the connection part of an attachment piece. Thereby, a reinforcing bar attachment part is attached in the state fastened tightly to a reinforcing bar with a small diameter.

  As a result, according to the present invention, since it is possible to cope with two types of reinforcing bars having different diameters with one type of sleeve fixing tool, the manufacturing cost of the sleeve fixing tool is reduced, and the labor of component management is saved. . In the present invention, the sleeve mounting portion has a substantially cylindrical shape extending on both sides from the connecting portion, and the second locking means is provided on the inner peripheral surface on the distal end side of the semicylindrical portion extending on one side. And a second protrusion that is releasably locked to the first protrusion protruding at least at one place in the circumferential direction of the outer peripheral surface of the semi-cylindrical portion extending to the other side. It may be. As a result, the sleeve can be firmly and easily attached to the prescribed attachment position of the sleeve attachment portion.

  In the present invention, the sleeve mounting portion has a substantially semi-cylindrical shape extending from the connecting portion to both sides, and the first locking projection protruding outward at the outer peripheral surface on the distal end side of the portion extending to one side. And a third mounting piece provided with a second locking projection protruding outward at at least one other position in the circumferential direction, and bending deformation at the tip of the portion extending to the other side of the third mounting piece A first semi-cylindrical shape that is detachably attached to the inner peripheral surface on the distal end side, and the first engagement protrusion and the second engagement protrusion that are individually releasably engaged with the first engagement protrusion and the second engagement protrusion. It may be provided with a fourth mounting piece provided with a third locking projection constituting the second locking means together with the locking projection.

  In the present invention, for a sleeve having a large diameter, the third mounting piece extending on both sides from the connecting portion is expanded and the sleeve is fitted, and the tip end side of the substantially semi-cylindrical fourth mounting piece is connected to the third mounting piece. A third locking projection provided on the inner peripheral surface on the tip side of the fourth mounting piece is projected outwardly at the tip of the third mounting piece and extends in the axial direction. Lock to the protrusion. Thereby, a sleeve with a large diameter is attached to the sleeve attachment portion in a state where it is firmly tightened. Further, for a sleeve having a small diameter, the semi-cylindrical third mounting piece is expanded and the sleeve is fitted, the fourth mounting piece is covered with the third mounting piece, and the third locking projection is attached to the third mounting piece. It is made to latch on the 2nd latching protrusion which protruded outward in the circumferential direction 1 place. Thereby, a sleeve with a small diameter is attached to the sleeve attachment portion in a state where it is firmly tightened. As a result, according to the present invention, two types of sleeves having different diameters can be handled with one type of sleeve fixing tool, so that the manufacturing cost of the sleeve fixing tool is reduced and the labor of component management is saved. .

  Moreover, in this invention, it is preferable that a reinforcing bar attaching part, a connection part, and a sleeve attaching part are integrally formed with a flexible resin material. This facilitates mass production of the sleeve fixture and provides the sleeve fixture at a low cost.

  In the present invention, the sleeve fixing member is firmly fixed to the reinforcing bar by the reinforcing bar attaching part by fitting the reinforcing bar attaching part to the reinforcing bar and locking the both side parts to each other by the first locking means. Further, the sleeve is fitted into the sleeve mounting portion, and both ends are locked to each other by the second locking means, whereby the sleeve is firmly fastened and fixed to the sleeve mounting portion. As a result, according to the present invention, even when a large force is applied to the entire sleeve fixing tool when placing concrete, it is possible to reliably prevent the sleeve fixing tool from falling off the reinforcing bars and the sleeve from the sleeve mounting portion. . Further, according to the present invention, the fixing of the reinforcing bar mounting portion to the reinforcing bar and the fixing of the sleeve by the sleeve mounting portion are performed easily and in a short time by the first and second locking means, and there is no need for binding with a wire or the like. Therefore, the installation work of the sleeve fixing tool at the site is simplified and the working time is greatly shortened. Further, according to the present invention, since it is not necessary to bind the sleeve fixing tool with a wire or the like, the problem of easy corrosion of the rebar due to the contact between different types of metal such as the wire and the rebar is also solved. Furthermore, according to the present invention, since the strength of the reinforcing bar mounting portion and the sleeve mounting portion itself is not a problem, various materials such as recycled materials can be used as the resin material. The manufacturing cost can be further reduced.

  In the present invention, the reinforcing bar attaching portion is provided with first locking means including a first protruding portion and a second protruding portion, and the sleeve mounting portion is provided with a second locking consisting of the first protrusion and the second protrusion. By providing the means and locking them at a plurality of locations, it becomes possible to deal with reinforcing bars having different diameters or sleeves having different diameters with a single type of sleeve fixing tool. The cost is reduced and the part management effort is greatly reduced.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 and 2 show a sleeve fixing device according to the first embodiment from a front view and a plan view, and FIGS. 3, 4 and 5 show a usage mode 1 of the sleeve fixing device as a perspective view, a front view and a plan view. 6 and 7 show a usage mode 2 of the sleeve fixing tool in front and plan views, and FIGS. 8 and 9 show a usage mode 3 of the sleeve fixing tool in front and top views. The sleeve fixture 10 is a flexible resin member such as polyethylene, and is an elastically deformable rebar attachment portion 11 that is fastened and fixed to the rebars 1 and 2, and a direction perpendicular to the axis from the outer peripheral surface of the rebar attachment portion 11. And an elastically deformable sleeve mounting portion which is integrally attached to the end portion of the connecting portion 18 and arranged so that the axis thereof is orthogonal to the reinforcing bar mounting portion 11 to fasten and fix the sleeves 28 and 29. 21. The sleeve fixture 10 is integrally formed by resin injection molding and is provided at low cost. In addition, the resin material is not limited to a single homogeneous material, and may be an inexpensive material using a recycled material, for example.

  The reinforcing bar attachment portion 11 is a thin, substantially semi-cylindrical first attachment piece 12 and a substantially semi-cylindrical second attachment piece 16 that is integrally attached to the other end edge of the first attachment piece 12 so as to be able to bend and deform. And is integrated with a plate-like connecting portion 18 that is disposed between both ends in the axial direction and extends in the radial direction at the center in the circumferential direction of the first mounting piece 12. The first mounting piece 12 has a semi-cylindrical shape in which a substantially 1/4 circumferential portion of the cylindrical shape is removed. For example, the inner diameter is slightly larger than 10 mmφ in accordance with the reinforcing bar 2 having an outer diameter of 10 mmφ. It is formed as follows. On the outer peripheral surface of the portion 12a extending to one end edge side (front side in FIG. 1) sandwiching the connecting portion 18 of the first mounting piece 12, the first engagement extends outwardly at one end edge and extends between both axial ends. A stop convex portion 13 is provided, and a second locking convex portion 14 that protrudes outward at a position near the connecting portion 18 and extends between both ends in the axial direction is provided.

  Each of the first and second locking projections 13 and 14 has two protrusions extending in the circumferential direction continuous in the circumferential direction, and each protrusion is inclined toward the connecting portion 18 when viewed from the plane. The protruding end has a sawtooth shape with a sharp angle. Since each of the first and second locking projections 13 and 14 has two protrusions, a third locking projection 17 described later is locked to the first or second locking projections 13 and 14. Even when there is a variation in the diameter of the reinforcing bars to be fitted, by selecting and locking one of the projections according to the variation, the reinforcing bars can be attached tightly to the reinforcing bars. The number of protrusions is not limited to two, but may be one or three as necessary.

  A thin linear connecting portion 15 that extends in the axial direction is provided at the tip edge of the portion 12b that extends to the other end edge side (the rear side in FIG. 1) across the connecting portion 18 of the first mounting piece 12. The second attachment piece 16 having a substantially semi-cylindrical shape is attached to the first attachment piece 12 via the thin connecting portion 15 so as to be able to be bent and deformed. The second mounting piece 16 has a substantially semi-cylindrical shape excluding a substantially half circumferential portion of the cylindrical shape, and has an outer diameter that is substantially the same size as the first mounting piece 12, and is formed at the inner peripheral portion of the tip. A third locking projection 17 that slightly protrudes in the direction and extends between both axial ends is provided. The third locking projection 17 is a single projection, and the shape of the projection is inclined toward the thin connecting portion 15 as seen from the plane, like the first and second locking projections 13 and 14. Thus, the protruding end has a sawtooth shape with a sharp angle. The 3rd latching convex part 17 and the 1st and 2nd latching convex parts 13 and 14 can be mutually latched. Note that the number of protrusions is not limited to one.

  The connecting portion 18 is an irregular thin plate, and one end edge is integrally attached to both ends along the axial direction at the center in the circumferential direction of the first attachment piece 12, and is radially attached to the first attachment piece 12. The other end edge is integrally attached along a part of the outer peripheral surface of the sleeve attaching portion 21. The connecting portion 18 has a plate-like rib 19 that slightly protrudes horizontally from both sides at the position near the lower end of the first mounting piece 12 and extends in the longitudinal direction. The upper edge 18 a of the connecting portion 18 is curved and recessed in a substantially arc shape toward the rib 19, is closest to the rib 19 in the vicinity of the sleeve mounting portion 21, and is in contact with the outer peripheral surface of the sleeve mounting portion 21. So that they are connected. Similarly to the upper edge 18a, the lower edge 18b is slightly curved in a substantially arc shape toward the rib 19, and is connected so as to be in contact with the outer peripheral surface of the sleeve mounting portion 21.

  The sleeve mounting portion 21 has a substantially cylindrical shape with a thin wall and a very short axial length extending on both sides at the other end of the connecting portion 18 and a semi-cylindrical top extending on one side (upward in FIG. 1). A mounting piece 22 and a lower mounting piece 23 which is a semi-cylindrical shape extending to the other side (downward in FIG. 1) and slightly larger in diameter than the upper mounting piece 22 are provided. At the center in the width direction of the outer peripheral surfaces of the upper and lower mounting pieces 22 and 23, ribs 22a and 23a that protrude slightly are provided along the entire circumference. The upper and lower mounting pieces 22 and 23 are formed to have an inner diameter slightly larger than 75 mmφ in accordance with, for example, the sleeve 28 having an outer diameter of 75 mmφ. The upper mounting piece 22 has first and second protrusions 24 and 25 that protrude at two positions at a predetermined distance from the front end of the outer peripheral surface and extend between both ends in the axial direction.

  Each of the first and second protrusions 24 and 25 has two protrusions extending in the circumferential direction and extending in the circumferential direction, and each protrusion is inclined toward the connecting portion 18 when viewed from the front. The protruding end is serrated with a sharp angle. Since each of the first and second protrusions 24 and 25 has two protrusions, when the third protrusion 26 of the lower mounting piece 23 described later is locked to the first or second protrusions 24 and 25, Even if there is a variation in the diameter of the sleeve to be fitted, by selecting and locking one of the projections according to the variation, the sleeve can be attached tightly to the sleeve. The number of protrusions is not limited to two, but may be one or three as necessary.

  The lower mounting piece 23 has a third protrusion 26 that protrudes from the outer peripheral surface of the tip position and extends in the axial direction. The third protrusion 26 is one protrusion, and the shape of the protrusion is inclined toward the connecting portion 18 when viewed from the front, and the protruding end is sharpened at an acute angle, like the first and second protrusions 24 and 25. The third projection 26 and the first and second projections 24 and 25 are releasably locked with each other. The number of protrusions is not limited to one.

  The sleeve mounting portion 21 has a diameter capable of tightening and fixing a large-diameter sleeve when the third protrusion 26 and the first protrusion 24 are locked. On the other hand, when the third protrusion 26 and the second protrusion 25 are engaged with each other, the sleeve mounting portion 21 has a diameter that allows a small-diameter sleeve to be fastened and fixed. Since each of the first and second protrusions 24 and 25 has two protrusions, when the third protrusion 26 is locked to the first or second protrusions 24 and 25, the diameter of the sleeve to be fitted varies. Even if there is, the sleeve can be attached in a tightly tightened state by selecting and locking one of the protrusions according to variations. As the sleeve, there are an MB pipe and a void pipe made of vinyl chloride, and paper made of cardboard or the like is also used.

Next, a usage mode of the sleeve fixture 10 according to the first embodiment will be described.
(1) Use mode 1 of the sleeve fixing tool 10: When the diameter of the reinforcing bar 1 is large and the diameter of the sleeve 28 is large As shown in FIGS. 3 to 5, the reinforcing bar attaching part 11 extends from the connecting part 18 to both sides. The first mounting piece 12 is expanded and fitted to the rebar 1, the second mounting piece 16 is expanded and the first mounting piece 12 is covered with the second mounting piece 16, and provided on the inner peripheral surface on the distal end side of the second mounting piece 16. The third locking projection 17 is locked to the first locking projection 13 provided on the distal end side of the first mounting piece 12. Thereby, the reinforcing bar attaching part 11 becomes one cylindrical shape as a whole, and is attached to the reinforcing bar 1 having a large diameter in a firmly tightened state. Next, the sleeve 28 is inserted by expanding the upper end of the sleeve mounting portion 21 and the lower mounting pieces 22, 23, and the third mounting 26 is mounted on the lower mounting piece 23 by covering the distal end of the upper mounting piece 22. The sleeve 28 is firmly fastened and fixed to the sleeve mounting portion 21 by being locked to the first protrusion 24 at the tip of the piece 22 and tightening.

  As a result, in Example 1, the sleeve fixture 10 is firmly tightened and fixed to the reinforcing bar 1 by the reinforcing bar attachment portion 11, so that even when a large force is applied to the entire sleeve fixture 10 during concrete placement, The sleeve fixing tool 10 can be reliably prevented from falling off the reinforcing bar 1. Further, since the sleeve 28 is also firmly fastened and fixed to the sleeve mounting portion 21, the sleeve 28 can be reliably prevented from falling off from the sleeve mounting portion 21. Furthermore, the rebar mounting portion 11 is fixed to the rebar 1 simply by locking the third locking projection 17 of the first mounting piece 12 to the first locking projection 13. The fixing to the portion 21 is easily performed by locking the third protrusion 26 of the lower attachment piece 23 to the first protrusion 24 of the upper attachment piece 22. Therefore, in Example 1, it is not necessary to bind with a wire or the like. As a result, the work for attaching the sleeve fixing tool 10 on the site is simplified and the working time is greatly shortened.

  Further, according to the first embodiment, it is not necessary to bind the sleeve fixing tool 10 with a wire or the like, thereby eliminating the problem of the corrosion of the rebar due to the contact of different metals between the wire and the rebar. . Further, according to the first embodiment, the reinforcing bar mounting portion 11 is fixed to the reinforcing bar by locking the third locking convex portion 17 and the first locking convex portion 13 to the sleeve of the sleeve mounting portion 21. Is fixed by locking the third protrusion 26 to the first protrusion 24, so that the strength of the reinforcing bar mounting portion 11 and the sleeve mounting portion 21 itself is not a problem. Therefore, in Example 1, various materials such as recycled materials can be used as the resin material, and as a result, the manufacturing cost of the sleeve fixture 10 can be further reduced.

(2) Use mode 2 of the sleeve fixture 10: When the diameter of the reinforcing bar 2 is small and the diameter of the sleeve 28 is large As shown in FIGS. 6 and 7, the reinforcing bar attaching part 11 extends from the connecting part 18 to both sides. The first attachment piece 12 is spread and fitted to the reinforcing bar 2, and the third attachment protrusion 12 is provided on the inner peripheral surface on the distal end side by covering the second attachment piece 16 with the first attachment piece 12. It is made to latch on the 2nd latching convex part 14 provided in the connection part 18 vicinity. The mounting of the sleeve mounting portion 21 to the sleeve is the same as in the above usage mode 1. Thereby, the rebar attachment part 11 is attached in the state which tightened the rebar 2 with a small diameter firmly. As a result, in the present embodiment, since the single reinforcing bar mounting portion 11 can be fixed to two types of reinforcing bars having different thicknesses, the sleeve fixture 10 is provided at low cost for reinforcing bars having different diameters. At the same time, the trouble of managing the parts of the sleeve fixture 10 is saved.

(3) Use mode 3 of the sleeve fixing tool 10: When the diameter of the reinforcing bar 1 is large and the diameter of the sleeve 29 is small As shown in FIGS. 8 and 9, the upper and lower mounting pieces 22 and 23 of the sleeve mounting portion 21 are used. The distal end side is widened, a small diameter sleeve 29 is inserted, the lower mounting piece 23 is put on the distal end of the upper mounting piece 22, and the third projection 26 is disposed at a position away from the distal end of the upper mounting piece 22. The sleeve 29 is firmly fastened and fixed to the sleeve mounting portion 21 by being engaged with and tightening. The attachment of the reinforcing bar attachment portion 11 to the reinforcing bar 1 is the same as in the above-described usage mode 1. As a result, in this embodiment, since the two types of sleeves 28 and 29 having different thicknesses can be fixed by the single sleeve mounting portion 21, the sleeve fixing tool 10 can be inexpensively provided for sleeves having different diameters. In addition, the trouble of managing the parts of the sleeve fixture 10 can be saved.

Next, Example 2 will be described.
FIGS. 10 and 11 show a sleeve fixing device according to the second embodiment in front and plan views, FIG. 12 shows a usage mode 1 of the sleeve fixing device 30 in a front view, and FIG. 13 shows a usage mode of the sleeve fixing device 30. 2 is a front view. In the second embodiment, even when the sleeve diameters are greatly different, for example, 75 mmφ and 100 mmφ, one type of sleeve fixing tool 30 can be used. The sleeve fixing tool 30 is a flexible resin member such as polyethylene similar to the sleeve fixing tool 10, and is connected to the reinforcing bar mounting part 11 and the outer peripheral surface of the reinforcing bar mounting part 11 in a direction perpendicular to the axis. And a sleeve attachment portion 33 that is integrally attached to the end portion of the connecting portion 31 and is arranged so that the axis is orthogonal to the reinforcing bar attachment portion 11 to fasten and fix the sleeve.

  The connecting portion 31 is also an odd thin plate similar to the connecting portion 18, and one end edge is integrally attached across the both ends along the axial direction at the circumferential center of the first attaching piece 12. The other end edge is integrally attached along a part of the outer peripheral surface of the sleeve attaching portion 33. The upper edge 31a and the lower edge 31b of the connecting portion 31 are curved in a substantially arc shape and slightly recessed at the center in the longitudinal direction, and a rib 31c extending in a direction perpendicular to the plate is provided on the upper edge 31a. . Further, a rib 31d slightly extending in the width direction is provided at the center of the rib 31c. In addition, about the connection part 31, it is also possible to make it the shape like the said connection part 18. FIG.

  The sleeve mounting portion 33 is a third mounting piece via a thin and substantially semi-cylindrical third mounting piece 34 and a linear thin-walled connecting portion 41 extending in the axial direction at the other end of the third mounting piece 34. 34 is formed by a substantially semi-cylindrical fourth mounting piece 42 which is integrally attached to be bent and deformable, and is integrated with the connecting portion 31 at a position near one end side of the third mounting piece 34. Yes. The third attachment piece 34 has a semi-cylindrical shape in which a substantially 1/6 circumferential portion of the cylindrical shape is removed. A second piece 36 extending to the other side (downward with respect to the connecting portion 31) is provided, and is formed such that the inner diameter is slightly larger than a sleeve having an outer diameter of 75 mmφ, for example. A first locking protrusion 37 and a second locking protrusion 38 are provided on the outer peripheral surface at a substantially intermediate position in the circumferential direction with respect to the distal end side of the second piece 36. Further, a rib 36 a that protrudes between the vicinity of the second locking protrusion 38 from the connecting portion 31 is provided at the center in the width direction of the outer peripheral surface of the second piece 36.

  The first and second locking protrusions 37 and 38 each have three protrusions extending in the axial direction continuous in the circumferential direction, and each protrusion is inclined toward the connecting portion 31 as viewed from the plane. The protruding end has a sawtooth shape with a sharp angle. Since each of the first and second locking projections 37 and 38 has three projections, a third locking projection 43 described later is locked to the first or second locking projections 37 and 38. Even if the diameters of the sleeves to be fitted vary, it is possible to fit the sleeves in a tightly tightened state by selecting and locking one of the projections according to the variation. The number of protrusions is not limited to three.

  The fourth attachment piece 42 has a substantially semi-cylindrical shape having substantially the same diameter as the third attachment piece 34, and protrudes slightly inward at the inner peripheral portion of the tip and extends between both axial ends. A stop projection 43 is provided. The third locking projection 43 is a single projection and, like the first and second locking projections 37 and 38, is a saw-tooth that is inclined in the direction of the connecting portion 18 when viewed from the plane and has a sharp protruding end. The first and second locking projections 37 and 38 can be locked with each other. The number of protrusions is not limited to one. In addition, a rib 42 a protruding from the thin connecting portion 41 to the vicinity of the third locking protrusion 43 is provided at the center in the width direction of the outer peripheral surface of the fourth mounting piece 42.

Next, how to use the sleeve fixing tool 30 according to the second embodiment will be described.
(1) Usage Mode 1 of Sleeve Fixer 30: When the Diameter of the Sleeve 45 is Small As shown in FIG. 12, the sleeve mounting portion 33 is expanded by expanding the third mounting piece 34 extending from the connecting portion 31 to both sides. And the fourth mounting piece 42 is spread and covered with the third mounting piece 34, and the third locking projections 43 provided on the inner peripheral surface on the distal end side of the fourth mounting piece 42 are arranged in the circumferential direction of the third mounting piece 34. The second locking projections 38 provided at the intermediate positions are locked. Thereby, the sleeve attaching portion 33 is attached in a state of being firmly tightened to the sleeve 45 having a small diameter, for example, 75 mmφ. The attachment of the reinforcing bar attachment portion 11 to the reinforcing bar is as described in the first embodiment.

(2) Use Mode 2 of Sleeve Fixing Tool 30: When the Diameter of the Sleeve 46 is Large As shown in FIG. 13, the third mounting piece 34 of the sleeve mounting portion 33 is expanded and the sleeve 46 is fitted to the fourth mounting piece 42. The third locking projection 43 provided on the inner peripheral surface on the distal end side is engaged with the first locking projection 37 provided on the distal end of the third mounting piece 34. Thereby, the third attachment piece 34 and the fourth attachment piece 42 are formed into a single cylindrical shape, and the sleeve 46 having a large diameter is attached to the sleeve attachment portion 33 in a firmly tightened state. As a result, in the second embodiment, two types of sleeves having greatly different diameters can be fixed by the single sleeve mounting portion 33, so that the sleeve fixing tool 30 is provided at low cost for sleeves having different diameters. In addition, the labor of managing the parts of the sleeve fixture 30 is saved.

Next, modified examples of the above embodiments will be described.
The modified example is different from the first and second embodiments, and as shown in FIGS. 14 and 15, the sleeve fixing tool 10 </ b> A is applied to a reinforcing bar and a sleeve having a single diameter, and a reinforcing bar attaching portion. 51, the connecting portion 18 and the sleeve mounting portion 21A are integrally provided. The reinforcing bar mounting portion 51 is provided with a thin and substantially semi-cylindrical mounting piece 52, and is integrated with the plate-shaped connecting portion 18 arranged in the axial direction at the center in the circumferential direction of the mounting piece 52. The attachment piece 52 has a substantially cylindrical shape separated at one place in the circumferential direction, and is formed according to a reinforcing bar having a predetermined outer diameter. On the outer peripheral surface of the portion 52a extending to one end edge side (front side in FIG. 14) sandwiching the connecting portion 18 of the mounting piece 52, a first locking convex portion 53 protruding at one end edge and extending between both axial ends is provided. Is provided. The first locking convex portion 53 is a single protrusion, and the protrusion has a sawtooth shape with a protruding end inclined in the direction of the connecting portion 18 as viewed from above, with a sharp angle.

  On the inner peripheral surface of the portion 52b extending to the other end edge side (rear side in FIG. 14) sandwiching the connecting portion 18 of the mounting piece 52, a second latch projecting at the other end edge and extending between both axial ends. Protrusions 54 are provided so as to be releasably engaged with the first engaging protrusions 53. In the sleeve mounting portion 21A, the upper mounting piece 22 in the sleeve mounting portion 21 is provided with only a first protrusion 24 that protrudes from the outer peripheral surface of the tip and extends in the axial direction, and is changed to the lower mounting piece 23. There is no. Thus, the third protrusion 26 and the first protrusion 24 are releasably locked with each other.

  In a modification, for one type of reinforcing bar of a predetermined diameter, the reinforcing bar mounting portion 51 is provided on the inner peripheral surface on the front end side by spreading the fitting pieces 52 extending from the connecting portion 18 on both sides and fitting the reinforcing bars. By engaging the second locking projection 54 with the first locking projection 53, the reinforcing bar mounting portion 51 is attached in a state of being firmly tightened to the reinforcing bar. In addition, with respect to one type of sleeve of a predetermined diameter, the sleeve mounting portion 21A and the distal end side of the lower mounting pieces 22 and 23 are expanded and the sleeve is inserted, and the lower mounting piece 23 is inserted into the distal end of the upper mounting piece 22 The sleeve is firmly clamped and fixed to the sleeve mounting portion 21A by engaging the third projection 26 with the first projection 24 at the tip of the upper mounting piece 22 and tightening.

  As described above, in the modified example, similarly to the first and second embodiments, a single diameter reinforcing bar having a predetermined thickness and the sleeve are firmly attached to the reinforcing bar using the sleeve fixing tool 10A. Further, since the sleeve can be firmly fixed, it is possible to reliably prevent the sleeve fixing tool 10A from falling off the reinforcing bars and the sleeve from the sleeve mounting portion 21A, as in the above embodiments. In the modification, the reinforcing bar mounting portion 51 is easily fixed to the reinforcing bar by locking the second locking convex portion 54 of the first mounting piece 12 with the first locking convex portion 52. Is fixed to the sleeve mounting portion 21 simply and in a short time by engaging the third projection 26 of the lower mounting piece 23 with the first projection 24 of the upper mounting piece 22. For this reason, in the modified example, it is not necessary to bind with a wire or the like. As a result, the work of attaching the sleeve fixing tool 10A on site is simplified, and the working time is greatly shortened.

  In each of the above embodiments, either the reinforcing bar attaching portion or the sleeve attaching portion can be changed to the shape of the modified example. In addition, the sleeve fixtures shown in the above embodiments and modifications are merely examples, and various modifications can be made without departing from the spirit of the present invention.

  According to the present invention, the reinforcing bar mounting portion of the sleeve fixing tool is firmly fixed to the reinforcing bar by the first locking means, and the sleeve is firmly fixed to the sleeve mounting portion by the second locking means. Even if a large force is applied to the sleeve fixing tool at this time, it is possible to reliably prevent the sleeve fixing tool from coming off from the reinforcing bar, and to prevent the sleeve from coming off from the sleeve mounting part. This eliminates the need for this, so field work can be done easily and in a short time. Further, in the present invention, since it is possible to cope with reinforcing bars and sleeves having different diameters with a single type of sleeve fixing tool, the manufacturing cost of the sleeve fixing tool is reduced, and the labor of component management is greatly reduced. Therefore, the present invention is useful.

It is a front view which shows roughly the sleeve fixing tool which is Example 1 of this invention. It is a top view which shows the same sleeve fixing tool. It is a perspective view which shows the usage condition 1 of the same sleeve fixing tool. It is a front view which shows the usage condition 1 of the same sleeve fixing tool. It is a top view which shows the usage condition 1 of the same sleeve fixing tool. It is a front view which shows the usage condition 2 of the same sleeve fixing tool. It is a top view which shows the usage condition 2 of the same sleeve fixing tool. It is a front view which shows the usage condition 3 of the same sleeve fixing tool. It is a top view which shows the usage condition 3 of the same sleeve fixing tool. It is a front view which shows the sleeve fixing tool which is Example 2. FIG. It is a bottom view which shows the same sleeve fixing tool. It is a perspective view which shows the usage condition 1 of the same sleeve fixing tool. It is a front view which shows the usage condition 2 of the same sleeve fixing tool. It is a front view which shows the sleeve fixing tool which is a modification. It is a top view which shows the same sleeve fixing tool.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,2 ... Reinforcing bar, 10, 10A ... Sleeve fixing tool, 11, 51 ... Reinforcing bar attaching part, 12, 52 ... First attaching piece, 13, 53 ... First locking convex part, 14, 54 ... Second locking Convex part, 15 ... Thin connection part, 16 ... Second attachment piece, 17 ... Third locking convex part, 18 ... Connection part, 21, 21A ... Sleeve attachment part, 22 ... Upper attachment piece, 23 ... Lower attachment piece, 24 ... 1st protrusion, 25 ... 2nd protrusion, 26 ... 3rd protrusion, 28, 29 ... Sleeve, 30 ... Sleeve fixing tool, 31 ... Connection part, 33 ... Sleeve attachment part, 34 ... 3rd attachment piece, 37 ... 1st latching protrusion, 38 ... 2nd latching protrusion, 41 ... Connection thin wall part, 42 ... 4th attachment piece, 43 ... 3rd latching protrusion.

Claims (7)

A cylindrical shape that is separated at one place in the circumferential direction and has a substantially C-shaped cross section perpendicular to the axis. An elastically deformable sleeve mounting portion which is separated at a place and is substantially C-shaped, and is arranged such that the reinforcing bar mounting portion and the axis are orthogonal to each other, and a cylindrical sleeve is mounted by fitting, and the reinforcing bar A sleeve fixture provided with a connecting portion for connecting between the mounting portion and the sleeve mounting portion,
The reinforcing bar mounting portion is provided with a first locking means that overlaps the two side portions that are separated from each other so as to be releasably locked, and the sleeve mounting portion has the both side portions on the separated side portions. A sleeve fixing tool comprising a second locking means that overlaps and is releasably locked with each other. The reinforcing bar mounting portion has a substantially cylindrical shape extending from the connecting portion to both sides, and the first locking means protrudes at the inner peripheral surface on the distal end side of the semi-cylindrical portion extending to one side. A first protrusion, and a second protrusion that releasably engages with the first protrusion that protrudes in at least one position in the circumferential direction of the outer peripheral surface of the semicylindrical portion that extends to the other side; The sleeve fixture according to claim 1, wherein The sleeve mounting portion has a substantially cylindrical shape extending on both sides from the connecting portion, and the second locking means protrudes on the inner peripheral surface on the distal end side of the semi-cylindrical portion extending to one side. 1 protrusion, and the 1st protrusion which protruded in the circumferential direction of the outer peripheral surface of the semi-cylindrical part extended to the other side, and the 2nd protrusion which mutually engage | operates releasably are provided. The sleeve fixing tool according to claim 1 or 2, characterized by the above-mentioned. The reinforcing bar mounting portion has a substantially semi-cylindrical shape extending on both sides from the connecting portion, and provided with a first locking convex portion protruding outward at the outer peripheral surface on the distal end side of the portion extending to one side. A first mounting piece provided with a second locking projection protruding outward at a position in the vicinity of the connecting portion and a tip of the portion extending to the other side of the first mounting piece are attached so as to be capable of bending deformation. A first semi-cylindrical shape, the first latching convex part and the second latching convex part, which are individually releasably latched with the first latching convex part and the second latching convex part on the inner peripheral surface on the tip side. The sleeve fixing tool according to claim 1, further comprising a second mounting piece provided with a third locking projection that constitutes the first locking means together with a second locking projection. The sleeve mounting portion has a substantially cylindrical shape extending on both sides from the connecting portion, and the second locking means protrudes on the inner peripheral surface on the distal end side of the semi-cylindrical portion extending to one side. 1 projection, and the 1st projection which protruded in the circumferential direction of the outer peripheral surface of the semi-cylindrical part extended to the other side, and the 2nd projection which latches mutually and releasably latches The sleeve fixing tool according to claim 4. The sleeve mounting portion has a substantially semi-cylindrical shape extending to both sides from the connecting portion, and is provided with a first locking projection that protrudes outward on the outer peripheral surface on the distal end side of the portion extending to one side A third mounting piece provided with a second locking projection that protrudes outward at at least one place in the circumferential direction, and a bending deformable mounting at the tip of the portion extending to the other side of the third mounting piece A first semi-cylindrical shape and a first engagement protrusion and a second engagement that are individually releasably engaged with the first engagement protrusion and the second engagement protrusion on the inner peripheral surface on the distal end side. The sleeve fixing tool according to claim 4, further comprising a fourth mounting piece provided with a third locking protrusion that constitutes the second locking means together with a locking protrusion. The sleeve fixing tool according to any one of claims 1 to 6, wherein the reinforcing bar attaching portion, the connecting portion, and the sleeve attaching portion are integrally formed of a flexible resin material.

Images