JP2017179979A - Reinforcement fixing metal fitting of slope frame mold, and slope frame mold provided with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcement fixing metal fitting for a slope frame mold and a slope frame mold provided with the same that offer both excellent fitting and firm holding performance for a reinforcement.SOLUTION: A reinforcement fixing metal fitting for a slope frame mold is for fixing a reinforcement 6 to a spacer, the spacer having a vertical rod 5 and a horizontal rod 4 intersecting in a cruciform and the reinforcement intersecting with both vertical rod and horizontal rod. The reinforcement fixing metal fitting includes an annular insertion part 8 for inserting the vertical rod, a grip part 9 for gripping the horizontal rod, and a holder part 10 for holding the reinforcement, the annular insertion part, the grip part, and the holder part being provided continuously in a series and made by folding and bending a single elastic wire material. The holder part includes a bottom holder part 10a for receiving a bottom end side of the reinforcement, a standing holder part 10b for receiving and holding a side of the reinforcement, and a top holder part 10c for engaging with a top end side of the reinforcement. The grip part includes a top grip part 9a that may come in contact with a top edge side of the horizontal rod, and a bottom grip part 9b engaged with a bottom edge side of the horizontal rod.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a rebar fixing metal fitting for a frame for a frame that can achieve both good rebar mounting properties and reliable holding performance, and a frame for a frame having the same.

  Patent Literature 1 is known as a fixture for fixing a reinforcing bar to a grid-like spacer of a formwork frame. Patent Document 1 “Debris Prevention Metal Mesh Unit and Rebar Fixing Plate” is to provide a landslide prevention metal mesh unit and a rebar fixing plate that can perform the rebar fixing work easily and in a short time. The reinforcing bar fixing plate is for fixing and holding the reinforcing bar at the intersection between the horizontal bar and the vertical bar of the net connector, and includes a plate part, an elastic holding part, and a horizontal holding part. The plate portion has a through hole that is located on the horizontal bar and allows the vertical bar to pass up and down. The elastic holding part rises from one end part of the plate part and presses and holds the reinforcing bar toward the crossing part. The horizontal holding portion is connected to the plate portion so as to hold the horizontal bar from the side. Moreover, the bending engagement part is formed in the elastic holding part and the side holding part.

JP 2005-61015 A

  When fixing a reinforcing bar to a net connector, it is desired to achieve both good mounting properties and reliable holding performance. Regarding the holding performance, it is required that the reinforcing bars do not easily come out along the vertical bars and that the reinforcing bars do not easily shift along the length direction.

  In the background art, the reinforcing bars are pushed in with a wide space between the elastic holding part and the vertical bar, and the pushed-in reinforcing bars are pressed toward the intersection by the elastic holding part. Since the elastic holding portion of the reinforcing bar fixing plate has a plate shape connected in series from the plate portion, it is necessary to secure the mounting and holding of the reinforcing bar only by simple elastic bending deformation. That is, since it is difficult to deform in a multifaceted manner, such as twisting, it is necessary to set the flexural elasticity of the elastic holding portion hard in order to obtain a reliable holding performance. When the flexural elasticity was set to be hard, a large force was required for mounting the reinforcing bars, and the mounting properties were not good. On the other hand, if the flexural elasticity of the elastic holding part is set to be soft, the reinforcing bars easily come out along the vertical bars.

  In the background art, the reinforcing bar is pushed between the elastic holding part and the vertical bar and held so as to be held by the crossing part and the elastic holding part. Therefore, in order to prevent the reinforcing bar from coming out, the elastic holding part and the vertical bar It is necessary to make the interval of the narrower than the reinforcing bar diameter. When the interval is narrowed in this manner, coupled with increasing the bending elasticity of the elastic holding portion, a larger force is required for the pushing operation, and the mounting property is further deteriorated.

  Since the elastic holding portion is provided with the bending engagement portion, it is necessary to get over the bending engagement portion and push the reinforcing bar, and a larger force is required, so that the mounting property is not good.

  In order to hold the reinforcing bar in the elastic holding part, the bending engagement part is provided so as to be engaged with the reinforcing bar in a positional relationship where it directly hits the reinforcing bar. It is conceivable that the bending engagement portion is crushed when the reinforcing bar is attached, and the function of holding the reinforcing bar is lost. When the bending engagement portion is crushed, the reinforcing bar rattles at the intersection, and the reinforcing bar cannot be securely fixed to the net connector. Depending on the case, it is conceivable that the reinforcing bars are displaced from the elastic holding portion in the length direction.

  The reinforcing bar is surrounded by a smooth curved plate-shaped elastic holding part, and the bending engagement part is at most engaged with one place on the outer periphery of the reinforcing bar, so that the reinforcing bar is easily pulled out from the elastic holding part in the length direction. It was difficult to ensure the holding performance.

  The frame is constructed by spraying low slump concrete, for example, concrete with slump “0”. In the background art, since the reinforcing plate is plate-like as a whole, low slump concrete with poor fluidity cannot sufficiently circulate around the plate, and a gap is formed, which easily causes poor filling.

  The present invention was devised in view of the above-described conventional problems, and includes a rebar fixing metal fitting for a frame for a method frame that can achieve both good mounting performance and reliable holding performance of the rebar. The purpose is to provide a formwork frame.

  According to the present invention, there is provided a metal frame for fixing a reinforcing bar of a form frame. The form frame for a form frame includes a spacer having a cross joint portion obtained by joining a vertical bar and a horizontal bar crossed in a cross shape. A reinforcing bar fixing bracket of a frame for fixing a frame for fixing a reinforcing bar arranged to intersect with both the vertical bar and the horizontal bar to the spacer at a corner position of the cross-joining part; An annular insertion part for inserting the vertical bar, a grip part for holding the horizontal bar, and a holder part for holding the reinforcing bar by bending or bending from a single wire having elasticity The annular insertion portion is formed at the center portion in the longitudinal direction of the wire by the bending to form an insertion hole through which the vertical bar passes; the holder portion is It is formed in a series in the annular insertion part, and in a direction away from the annular insertion part, It extends so as to intersect the length direction of the rebar, and the lower part of the holder for receiving the lower end side of the rebar, and the end of the lower part of the holder, in the height direction of the rebar through the bent part It is formed in a series by rising upward, receiving the side of the reinforcing bar and holding the reinforcing bar on the lower part of the holder, toward the upper end of the reinforcing bar at the end of the holder rising part The annular insertion is so formed that the end thereof is located in the longitudinal direction of the reinforcing bar from directly above the bent portion and is positioned above the insertion hole at a distance smaller than the diameter of the reinforcing bar above the insertion hole. A holder upper portion that extends in a direction approaching the portion to intersect the length direction of the reinforcing bar and that locks the upper end side of the reinforcing bar through the terminal end; Opposite of the holder part with the insertion part in between And a grip upper portion formed in a series on the annular insertion portion, extending in a direction away from the annular insertion portion so as to exist on the upper end side of the horizontal bar, and capable of contacting the upper end side of the horizontal rod; The upper end of the grip is formed in series toward the horizontal bar through a U-shaped portion, and is swung toward the lower end side of the horizontal bar around the annular insertion portion. And a grip lower part which is brought into contact with the upper end side of the bar and is engaged with the lower end side of the horizontal bar.

  The insertion hole of the annular insertion part is formed inwardly surrounded by the wire by winding the wire one or more times, and the lower part of the holder is in series at the winding start of the annular insertion part. The upper part of the grip is formed in series at the end of winding of the annular insertion part.

  The end of the holder upper part of the holder part is provided with a bending part for engagement that is bent toward the upper end side of a reinforcing bar and engages with a groove between the reinforcing bar nodes. And

  The grip upper portion of the grip portion is formed with a bent portion on the upper end side of the horizontal bar so as to abut on the grip upper portion in a manner intersecting with the upper end side of the horizontal bar.

  A method frame mold provided with a reinforcing bar fixing metal fitting for a method frame according to the present invention is provided between a pair of metal meshes arranged face to face, using the reinforcing bar fixing metal fitting for the above method frame. With respect to a spacer having a cross joint joined to the crossed bar at a crossing point where the vertical bar crosses in a cross shape, the spacer and the horizontal bar are brought close to the corner of the cross joint of the spacer. Reinforcing bars arranged along the wire mesh so as to intersect with both bars include the annular insertion part through which the vertical bar is inserted, the grip part for holding the horizontal bar, and the holder part for holding the reinforcing bar. And fixed to the spacer.

  In the rebar fixing metal fitting for a method frame according to the present invention and the method frame mold provided with the same, it is possible to achieve both good mounting performance and reliable holding performance of the rebar.

BRIEF DESCRIPTION OF THE DRAWINGS It is the perspective view which looked at the general form-frame formwork to which the reinforcing-bar fixing metal fitting of the form-frame form concerning this invention is applied from the front. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view for explaining a preferred embodiment of a reinforcing bar fixing metal fitting for a form frame for a frame according to the present invention. It is a principal part enlarged view which shows the latching relationship of the reinforcing bar fixing metal fitting and reinforcing bar of the form frame for a frame shown in FIG. FIG. 2 is a front view of a state in which the reinforcing frame fixing metal fitting for the frame forming frame of FIG. 2 is applied, showing a preferred embodiment of the frame forming frame for reinforcing frame fixing metal fittings for the frame forming method according to the present invention. FIG. It is explanatory drawing explaining the modification of the metal fitting for reinforcing bar fixing of the formwork frame for the present invention. It is explanatory drawing explaining the other modification of the reinforcing-bar fixing metal fitting of the form frame for a frame which concerns on this invention.

  BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a method frame fixing bar reinforcing metal fitting and a method frame forming mold having the same according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a front perspective view of a general formwork frame to which a reinforcing bar fixing bracket of a formwork frame according to the present invention is applied, and FIG. 2 is a view for a formwork according to the present embodiment. FIG. 3 is an explanatory view for explaining a preferred embodiment of a reinforcing bar fixing metal fitting for a formwork, and FIG. 3 is an enlarged view of a main part showing a locking relationship between the reinforcing metal fixing metal fitting and the reinforcing bar of the frame for a frame shown in FIG. 4 and 4 show a preferred embodiment of a method frame mold provided with a reinforcing bar fixing metal fitting for a method frame according to the present embodiment. It is a front view of a mode that applied metal fittings.

  As shown in FIG. 1, a frame 1 for a normal frame is usually a pair of left and right planar metal meshes 2 that are arranged facing each other on a slope and spaced apart from each other. A plurality of spacers 3 are arranged at intervals in the length direction, and the spacers 3 set and hold the intervals between the wire meshes 2.

  Each spacer 3 is engaged with the metal mesh 2 at both ends in the length direction, and a pair of upper and lower horizontal bars 4 provided between the metal meshes 2 in the horizontal direction, and between the metal meshes 2 in the height direction of the metal mesh 2. It comprises a pair of left and right vertical bars 5 provided upright.

  A vertical bar 5 is crossed in a cross shape on the horizontal bar 4, and the vertical bar 5 and the horizontal bar 4 are joined to each other at an intersection where they intersect to form a cross junction X. ing. By joining the pair of upper and lower horizontal bars 4 and the pair of left and right vertical bars 5 at the cross joint X, each spacer 3 is formed in a cross-beam shape as a whole. The spacer 3 has a form in which one vertical bar 5 is joined to the center of the pair of upper and lower horizontal bars 4 and a form in which the vertical bar 5 is joined to each of the left and right and center positions. .

  Before the concrete is cast in the space between the metal meshes 2 which are inside of the frame 1 for the legal frame, the metal meshes are continuously wound around a plurality of spacers 3 arranged in the length direction of the metal mesh 2. Reinforcing bars 6 are arranged as reinforcing materials in the front-rear direction along the length direction 2.

  The reinforcing bars 6 are arranged at any one of the four corner angles appearing around the cross joint X when the horizontal bar 4 and the vertical bar 5 intersect with each spacer 3. . In other words, the reinforcing bars 6 in the front-rear direction that are stretched over the plurality of spacers 3 pass through the corners at the same position of the spacers 3 and intersect with both the vertical bars 5 and the horizontal bars 4 of each spacer 3. Is done.

  The reinforcing bar fixing bracket 7 of the frame for a frame according to the present embodiment has a reinforcing bar 6 that intersects with both the vertical bar 5 and the horizontal bar 4 at the cross joint X of the spacer 3. Used to fix.

  FIG. 2 is a partial view for showing the reinforcing bar fixing bracket 7 alone of the frame for the frame of the frame. In each of the divided drawings, for the sake of convenience of explanation, the horizontal bar 4 and vertical bar 5 of the spacer 3, the reinforcing bar 6 is indicated by a one-dot chain line, and the rebar fixing bracket 7 is rotated (turned) around the annular insertion portion 8 described later before being attached and fixed to the spacer 3 (before holding the rebar 6). The state before being) is shown.

  2A is a front view of the cross joint X viewed from the length direction of the wire mesh 2 (rebar 6), FIG. 2B is a plan view of the cross joint X viewed from above, and FIG. C) is a bottom view of the cross-junction X viewed from below, FIG. 2D is a left side view of the cross-junction X viewed from the left, and FIG. It is the right view seen from the direction. In the figure, the same parts shown in each partial diagram and shown in other partial drawings are shown connected by a two-dot chain line.

  The rebar fixing metal fitting (hereinafter referred to as a fixing metal fitting) 7 of the frame for a frame according to the present embodiment is formed from a single wire having elasticity using a metal material as a raw material. An annular for inserting the vertical bar 5 of the spacer 3 into the fixing bracket 7 by performing "folding" or "bending" on the wire material at appropriate multiple locations in the length direction. An insertion portion 8, a grip portion 9 for holding the horizontal bar 4 of the spacer 3, and a holder portion 10 for holding the reinforcing bar 6 are provided in series.

  The annular insertion portion 8 is formed with an insertion hole 8a inwardly surrounded by the wire by bending the central portion of the wire in the length direction at least once in a substantially circular shape. The insertion hole 8 a is formed with an inner diameter slightly larger than the outer diameter of the vertical bar 5. The vertical bar 5 is inserted into the insertion hole 8 a of the annular insertion portion 8. Therefore, when the vertical bar 5 is inserted into the annular insertion part 8 and attached to the vicinity of the cross-joining part X of the spacer 3, the fixing bracket 7 is rotatably provided around the vertical bar 5.

  As for the annular insertion portion 8, when the horizontal bar 4 is gripped by the grip portion 9 or the rebar 6 is inserted into the holder portion 10 by bending the wire rod one or more times as in this embodiment. In this case, even if the annular insertion portion 8 is deformed, it is preferable because the fixing bracket 7 can be surely prevented from coming off from the vertical bar 5, but the wire rod is not particularly bent one or more times. Alternatively, the annular insertion portion 8 may be formed, for example, bent into an Ω shape.

  The holder part 10 for holding the reinforcing bar 6 that intersects both the vertical bar 5 and the horizontal bar 4 at the cross-joint part X includes a holder lower part 10a for receiving the lower end side of the reinforcing bar 6 thereon, and a side of the reinforcing bar 6 It comprises a holder rising portion 10b for receiving the side and a holder upper portion 10c disposed on the upper end side of the reinforcing bar 6.

  The holder lower portion 10 a is formed in series at the starting end of the annular insertion portion 8. The holder lower portion 10 a extends substantially horizontally from the annular insertion portion 8 so as to pass the lower end side of the reinforcing bar 6 in a direction away from the annular insertion portion 8.

  Furthermore, the holder lower portion 10a passes through the lower end side of the reinforcing bar 6 so as to intersect the length direction of the reinforcing bar 6 and reaches the opposite side of the annular insertion portion 8 with the reinforcing bar 6 interposed therebetween. It is extended.

  And the holder lower part 10a is comprised so that the lower end side of the reinforcing bar 6 may be received on it by extending so that the lower end side of the said reinforcing bar 6 may be crossed with respect to the axial direction (length direction) of the reinforcing bar 6 Is done.

  The holder lower portion 10a of the fixing bracket 7 in the illustrated example extends obliquely with respect to the length direction of the reinforcing bar 6, but as illustrated above, before the fixing bracket 7 is attached to the spacer 3 and fixed. In FIG. 2 (B), when the fixing bracket 7 is rotated counterclockwise around the vertical bar 5 and the horizontal bar 4 is gripped by the grip portion 9 (the fixing bracket 7 is fixed to the spacer 3). The holder lower portion 10a is positioned in a direction substantially orthogonal to the reinforcing bar 6 (a direction substantially parallel to the horizontal bar 4).

  The holder rising portion 10b is formed in series at the end of the holder lower portion 10a. The holder raising portion 10b is formed so as to rise upward in the height direction of the reinforcing bar 6 through the bent portion Y at the terminal position of the holder lower portion 10a. When the fixing bracket 7 is attached and fixed to the spacer 3, the holder rising portion 10b receives the side of the reinforcing bar 6 received by the holder lower part 10a from the side next to the reinforcing bar 6, and thereby the reinforcing bar 6 is placed on the holder lower part 10a. It is supposed to hold on.

  The holder rising portion 10b is disposed at a position opposite to the annular insertion portion 8 so as to face the vertical bar 5 inserted through the annular insertion portion 8 together with the vertical bar 5 on the holder lower portion 10a. The rebar 6 is enclosed. The height position of the terminal end 10f of the holder rising portion 10b (the position of the chain double-dashed line a in the figure) is set to be lower than the diameter of the reinforcing bar 6 received by the holder lower portion 10a.

  In addition, the holder rising portion 10b is formed in a form along the outer periphery of the reinforcing bar 6 so as to enhance the holding performance, and in order to smooth the twisting deformation of the holder rising portion 10b, a bent portion 10g is provided in the middle thereof. (In the figure, a position of a two-dot chain line b) is formed. Further, the holder rising portion 10b can be elastically deformed in a form in which the holder rising portion 10b is tilted up and down in a direction in which the holder rising portion 10b is brought into contact with or separated from the cross joint portion X.

  The holder upper part 10c is formed in series at the terminal end 10f of the holder rising part 10b. The holder upper part 10 c is formed slightly upward from the terminal end 10 f of the holder rising part 10 b and straightly toward the upper end side of the reinforcing bar 6. Moreover, the holder upper part 10c is extended so that the axis line makes an angle with the axis line of the holder lower part 10a. Specifically, the holder upper portion 10c is provided on the condition that the terminal end (one end portion of the wire) 10d is separated from the position directly above the bent portion Y by a distance in the axial direction (length direction) of the reinforcing bar 6. The extension is as follows.

  First, the holder upper portion 10c has a terminal end 10d positioned above the insertion hole 8a and spaced from the insertion hole 8a by a distance narrower than the outer diameter of the reinforcing bar 6. Is extended in a direction approaching the annular insertion portion 8. When the fixing metal fitting 7 is attached and fixed to the spacer 3, the vertical bar 5 is inserted into the annular insertion part 8, whereby the reinforcing bar insertion port 11 is interposed between the vertical bar 5 and the terminal end 10 d of the holder upper part 10 c due to the interval. Is formed. The reinforcing bar 6 is pushed in between the vertical bar 5 and the holder upper part 10c through the reinforcing bar insertion slot 11. At that time, the reinforcing bar 6 comes into contact with the terminal end 10d of the holder upper part 10c and is then pushed in. The pushed-in rebar 6 is held on the holder lower portion 10a by the holder upper portion 10c, the holder rising portion 10b, and the vertical bar 5.

  Moreover, the holder upper part 10c is extended in the direction which cross | intersects with the length direction of the reinforcing bar 6, and the direction which becomes diagonal with respect to the length direction of a reinforcing bar in the example of illustration. In other words, the terminal end 10d of the holder upper portion 10c is extended so as to be located at a position spaced apart from the position directly above the bent portion Y in the length direction of the reinforcing bar 6. As a result, when the reinforcing bar 6 is pushed in via the reinforcing bar insertion port 11, the reinforcing bar 6 is pushed in with being in contact with the terminal end 10d of the holder upper part 10c. A turning action is generated at the terminal end 10d of the holder upper portion 10c in a direction away from the annular insertion portion 8.

  Furthermore, the holder upper part 10c is extended so that the terminal end 10d is hooked on the upper end side of the reinforcing bar 6 in order to lock the upper end side of the reinforcing bar 6 through the terminal end 10d. In the illustrated example, the holder upper part 10c extends obliquely upward toward a position higher than the terminal end 10f of the holder rising part 10b.

  FIG. 3 shows a state in which the rebar 6 is locked by the holder portion 10. With respect to the entire holder portion 10, the bent portion Y continuous with the holder lower portion 10 a and the terminal end 10 d of the holder upper portion 10 c are positioned so as to be separated from each other in the length direction of the reinforcing bar 6. A holder lower portion 10a including a bent portion Y located on the lower end side of the reinforcing bar 6 is engaged with any one of the grooves 6b between 6a, and a terminal end 10d of the holder upper portion 10c is spaced apart from the groove 6b, It is comprised so that it may engage with the other groove | channel 6b which appears in the upper end of the reinforcing bar 6.

  The grip portion 9 for gripping the horizontal bar 4 of the spacer 3 and attaching and fixing the fixing bracket 7 to the spacer 3 includes a grip upper part 9 a disposed on the upper end side of the horizontal bar 4 and a lower end side of the horizontal bar 4. And a grip lower part 9b.

  The grip upper part 9 a is formed in series at the end of the annular insertion part 8. The grip upper part 9 a is located on the opposite side of the holder part 10 with the annular insertion part 8 interposed therebetween. The grip upper portion 9 a extends in a direction away from the annular insertion portion 8 so as to exist on the upper end side of the horizontal bar 4.

  A part of the grip upper portion 9a intersects with the upper end side of the horizontal bar 4 in the state of crossing with the upper end side of the horizontal bar 4, and in the drawing, in a state of intersecting in the front-rear direction in the radial direction of the horizontal bar 4 on the upper end side of the horizontal bar 4. A bent portion 9d (indicated by a two-dot chain line c in the figure) for contacting the grip upper portion 9a is formed. By forming the bent portion 9d, as will be described later, when the fixing bracket 7 itself is turned to grip the horizontal bar 4 with the grip portion 9, the grip upper portion 9a crosses the horizontal bar 4 with the bent portion 9d. The grip portion 9 can firmly hold the horizontal bar 4 because it is in contact with the upper end side of the horizontal bar 4. The bent portion 9d may not be formed.

  The grip lower part 9b is formed in series at the end of the grip upper part 9a via a U-shaped portion Z bent in a U-shape in the vertical direction. The grip lower part 9 b is formed by the U-shaped portion Z so as to exist on the lower end side of the horizontal bar 4. The grip lower part 9b is extended toward a direction toward the horizontal bar 4 (a direction in which the fixing bracket 7 is turned) so as to be locked to the horizontal bar 4. Since the grip lower part 9b sandwiches the horizontal bar 4 together with the grip upper part 9a having the bent part 9d, the axis of the grip lower part 9b is formed so as to form an angle with the axis of the grip upper part 9a.

  An operation piece 9c for operating the grip lower part 9b by bending downward is formed at the terminal end (the other end part of the wire) of the grip lower part 9b. The grip lower part 9b can be swung around the annular insertion part 8 toward the lower end side of the horizontal bar 4, and is turned by the operation piece 9c to move the grip upper part 9a to the upper end side of the horizontal bar 4 and come into contact therewith. At the same time, it is moved and locked to the lower end side of the horizontal bar 4 so that the fixing bracket 7 is attached and fixed to the spacer 3.

  FIG. 4 shows a method frame mold 1 in which the reinforcing bars 6 are fixed to the spacers 3 using the fixing metal fitting 7 described above. The reinforcing bar 6 arranged in the frame 1 for the frame made of the metal mesh 2 and the spacer 3 holds the horizontal bar 4 with the grip part 9 turned around the annular insertion part 8 through which the vertical bar 5 of the spacer 3 is inserted. It is held by the holder portion 10 of the fixing metal fitting 7 and is arranged at the corner position of the cross joint portion X of the spacer 3.

  Next, the operation of the reinforcing frame fixing metal fitting 7 of the method frame mold according to the present embodiment and the method frame mold 1 having the same will be described. The fixing bracket 7 is formed from a single wire having elasticity by a process of “folding” or “bending”.

  When attaching the fixing bracket 7 to the spacer 3, first, the vertical bar 5 of the spacer 4 is inserted into the insertion hole 8 a of the annular insertion portion 8. Next, the entire fixing bracket 7 is rotated around the vertical bar 5, the grip upper part 9 a and the grip lower part 9 b of the grip part 9 are brought close to the upper end side and lower end side of the horizontal bar 4, and finally the operation piece 9 c is moved. By pressing around the annular insertion part 8, the grip upper part 9 a is brought into contact with the upper end side of the horizontal bar 4, and at the same time, the grip lower part 9 b is locked to the lower end side of the horizontal bar 4. 4 is gripped. When the horizontal bar 4 is gripped by the grip portion 9, the entire fixing bracket 7 is attached and fixed to the spacer 3.

  When the fixing bracket 7 is fixed to the spacer 3, the holder lower portion 10 a of the holder portion 10 is placed on the horizontal bar 4 so as to be substantially horizontal from the annular insertion portion 8 and substantially perpendicular to the length direction of the reinforcing bar 6. The holder rising portion 10b is positioned so as to rise almost upward from the bent portion Y at the end position of the holder lower portion 10a. Further, the holder upper portion 10c approaches the annular insertion portion 8 and the length of the rebar 6 The end 10d of the reinforcing bar 6 is located at a distance from the position directly above the bent portion Y in the longitudinal direction of the reinforcing bar 6 and between the longitudinal bar 5 and the diameter of the reinforcing bar 6. It is positioned so as to form a rebar insertion port 11 with a narrow interval.

  After the fixing bracket 7 is attached and fixed to the spacer 3, the reinforcing bar 6 is fixed to the spacer 3 through the fixing bracket 7. The reinforcing bar 6 is pushed toward the reinforcing bar insertion port 11 along the vertical bar 5 in a direction that intersects with both the vertical bar 5 and the horizontal bar 4 constituting the cross joint portion X of the spacer 3.

  When the reinforcing bar 6 is pushed into the reinforcing bar insertion slot 11, the reinforcing bar 6 is pushed in contact with the terminal end 10d of the holder upper part 10c. The holder riser 10b is elastically deformed so that it can be restored while avoiding the rebar 6 while being twisted and deformed so as to avoid elastic reinforcement. It is elastically deformed so that it can be restored in the pushing direction. With these elastic deformations of the holder part 10, the insertion of the rebar 6 is completed.

  When the insertion of the reinforcing bar 6 is completed, the elastic deformation of the holder part 10 is restored, and the outer periphery of the reinforcing bar 6 is fixed to the cross joint X of the spacer 3 by the holder part 10. At this time, the end 10 d of the holder upper part 10 a is locked to the upper end side of the reinforcing bar 6, and the outer periphery of the reinforcing bar 6 is firmly held by the holder part 10.

  Further, as the elastic deformation of the holder portion 10 is restored, the holder lower portion 10a including the terminal end 10d of the holder upper portion 10c and the bent portion Y is separated from each groove 6b between the nodes 6a that are spaced apart in the length direction of the reinforcing bar 6. , Thereby preventing the rebar 6 from moving in the longitudinal direction.

  In the reinforcing bar fixing bracket 7 of the frame for a frame according to the present embodiment described above, the spacer having the cross joint portion X in which the vertical bar 5 and the horizontal bar 4 crossed in a cross shape are joined at the intersection. 3 for fixing the reinforcing bars 6 arranged to intersect with both the vertical bars 5 and the horizontal bars 4 at the corner positions of the cross-joint portion X of the spacer 3 to the frame 1 for the frame 3 including the spacer 3. A rebar fixing metal fitting 7 for a frame for a frame, in order to hold an annular insertion part 8 for inserting a vertical bar 5 and a horizontal bar 4 by bending or bending from a single elastic wire. The grip portion 9 and the holder portion 10 for holding the rebar 6 are continuously provided in series, and the annular insertion portion 8 is formed by bending the longitudinal center portion of the wire rod in the longitudinal direction by bending the central portion in the longitudinal direction. Is inserted, and the holder portion 10 is formed in a series at one end of the annular insertion portion 8, A holder lower portion 10a that extends in a direction away from the annular insertion portion 8 so as to intersect the length direction of the reinforcing bar 6 and receives the lower end side of the reinforcing bar 6 thereon, and a terminal end of the holder lower portion 10a Next, the holder is raised to rise upward in the height direction of the reinforcing bar 6 through the bent portion Y, and is formed in a series, and receives the side of the reinforcing bar 6 to hold the reinforcing bar 6 on the holder lower part 10a. It is formed in series at the end of the part 10b and the holder rising part 10b toward the upper end side of the rebar 6 and the end 10d is separated from the position directly above the bent portion Y in the length direction of the rebar 6 and above the insertion hole 8a. In the direction approaching the annular insertion portion 8 so as to be located at a narrower distance than the diameter of the reinforcing bar 6 from the insertion hole 8a, it is extended so as to intersect the length direction of the reinforcing bar 6, and the end 10d is formed. Through the upper end of the rebar 6 A gripping portion 9 is formed on the other end of the annular insertion portion 8 in a series, with the annular insertion portion 8 interposed therebetween and positioned on the opposite side of the holder insertion portion 10. A grip upper portion 9a that extends in a direction away from the annular insertion portion 8 so as to exist on the upper end side of the rod 4 and can come into contact with the upper end side of the horizontal rod 4, and a U-shaped portion Z at the end of the grip upper portion 9a Are formed in series toward the horizontal bar 4, are swung around the annular insertion portion 8 toward the lower end side of the horizontal bar 4, and the grip upper part 9 a is brought into contact with the upper end side of the horizontal bar 4 and is Since the grip lower part 9b latched on the lower end side of the rod 4 is provided, the holder upper part 10c made of elastic wire material is elastic and includes the turning of the holder rising part 10b and twisting deformation. The elastic deformation of the falling form, and further, the holder lower part 1 Due to the elastic deformation of 0a in the pushing direction of the reinforcing bar, the force for pushing and installing the reinforcing bar 6 is appropriately distributed to the holder upper part 10c, the holder rising part 10b, and the holder lower part 10a. It is possible to secure a good mounting property to the body, and to ensure a reliable holding performance by elastic restoration, and to achieve both mounting properties and holding performance.

  In particular, due to the flexible deformation mode of the wire rod, the rebar 6 can be attached to the fixing bracket 7 with light operability even if the rebar insertion port 11 is set narrow.

  Since the holder upper part 10 c is elastically swiveled so as to avoid the inserted reinforcing bar 6, the terminal end 10 d of the holder upper part 10 c that locks the upper end side of the reinforcing bar 6 may hinder the insertion operation of the reinforcing bar 6. In addition, it is possible to ensure a good mounting property from this surface, and the terminal 10d is not crushed by the inserted reinforcing bar 6, and the holding performance of the reinforcing bar 6 by the terminal 10d of the holder upper part 10c can be appropriately ensured. Thus, it is possible to prevent problems such as the reinforcing bars 6 rattling at the cross joint X.

  Since the holder portion 10 includes a bent portion Y that becomes the end of the holder lower portion 10a, and a holder upper portion 10c that is extended so that the end 10d is separated from the portion directly above the bent portion Y in the length direction of the reinforcing bar 6. The rebar 6 can be locked along the length direction at two locations on the upper end side and the lower end side of the rebar 6 so that the rebar 6 can be reliably prevented from moving in the length direction, and the rebar 6 is fixed. It is possible to prevent the metal fitting 7 from slipping out in the length direction.

  Since the fixing fixture 7 is entirely formed of a wire rod, even if low slump, for example, “0” slump concrete is sprayed into the formwork frame 1, sufficient filling of the concrete around the fixing fixture 7 is ensured. It is possible to prevent filling failure.

  The grip portion 9 is configured to bring the horizontal bar 4 into contact with the upper end side of the horizontal bar 4 with the grip lower portion 9b that is turned and locked to the lower end side of the horizontal bar 4 with the grip upper portion 9a having the bent portion 9d. Since it can be firmly held by being sandwiched from above and below, the fixing bracket 7 can be securely fixed to the spacer 3 and attached.

  In the frame 1 for the legal frame according to the present embodiment, the vertical bar 5 is attached to the horizontal bar 4 spanned between a pair of wire meshes 2 arranged facing each other, using the fixing bracket 7 described above. For the spacer 3 having the cross joint portion X joined at the crossing points crossed in a cross shape, the wire mesh is brought close to the corner position of the cross joint portion X of the spacer 3 and crossed with both the vertical bar 5 and the horizontal bar 4. The reinforcing bars 6 arranged along the length direction of 2 are spacers formed by an annular insertion part 8 through which the vertical bar 5 is inserted, a grip part 9 that holds the horizontal bar 4, and a holder part 10 that holds the reinforcing bar 6. Since it is fixed to 3, when placing the reinforcing bar 6, it is possible to secure a good mounting property and a reliable holding performance of the reinforcing bar 6 to the spacer 3, and even if low slump concrete is sprayed, the reinforcing bar 6 is thereby easy. Can be prevented from moving or getting out , It is possible to appropriately secure the concrete filling of the fixing bracket 7 around.

  FIG. 5 shows a modification of the above embodiment. FIG. 5 is an explanatory view corresponding to FIG. 2 for explaining a reinforcing bar fixing bracket of a frame for a frame according to a modified example. Similarly to FIG. 2, the reinforcing bar fixing bracket 7 is attached to the spacer 3. A state before being rotated (turned) around the annular insertion portion 8 before being fixed (also before holding the reinforcing bar 6) is shown.

  FIG. 5 (A) is a front view of the cross-joint portion as viewed from the length direction of the wire mesh (rebar), FIG. 5 (B) is a plan view of the cross-junction portion as viewed from above, and FIG. FIG. 5D is a left side view of the cross-joined portion viewed from the left side, and FIG. 5E is a right side view of the cross-joined portion viewed from the right side. It is. In the figure, the same parts shown in each partial diagram and shown in other partial drawings are shown connected by a two-dot chain line.

  In this modification, the portion indicated by satin in the figure is added. This additional portion is an engaging bent portion 10e for engaging the groove 6b between the nodes 6a and 6a of the reinforcing bar 6 and smoothly guiding the reinforcing bar 6 to the holder portion 10. The engaging bent portion 10e is formed by bending the terminal end 10d of the holder upper portion 10c downward toward the upper end side of the reinforcing bar 6.

  In the above embodiment, the holder upper portion 10c is formed slightly upward and straight toward the upper end side of the reinforcing bar 6, and its end 10d faces upward. The terminal end 10d provided with 10e is bent downward so as to cover the upper end side of the reinforcing bar 6. Thereby, the holder upper part 10c can be firmly locked to the reinforcing bar 6, specifically the groove 6b of the reinforcing bar 6, and the movement of the reinforcing bar 6 in the length direction can be more reliably prevented.

  Moreover, in this modification, when the reinforcing bar 6 is pushed in through the reinforcing bar insertion port 11, the reinforcing bar 6 is guided into the holder part 10 in a state of being in contact with the engaging bent part 10e. Compared with the above-described embodiment, the engaging bent portion 10e is located at a position further away from the position just above the bent portion Y in the length direction of the reinforcing bar 6 by the amount corresponding to the engaging bent portion 10e. Therefore, the holder upper part 10c including the bending part 10e for engagement is more smoothly turned so that it can be elastically restored so as to avoid the reinforcing bar 6 with the bent portion Y as a base point.

  Other configurations are the same as those of the above-described embodiment, and it is a matter of course that the same effects as those of the above-described embodiment can be obtained even in such a modified example.

  FIG. 6 shows another modification of the above embodiment. FIG. 6 is an explanatory view corresponding to FIG. 2 for explaining a reinforcing bar fixing bracket of a frame for a frame according to another modified example. Similarly to FIG. A state before being rotated (turned) around the annular insertion portion 8 before being attached and fixed to (in addition to holding the reinforcing bar 6) is shown.

  6A is a front view of the cross-joint portion as viewed from the length direction of the wire mesh (rebar), FIG. 6B is a plan view of the cross-junction portion as viewed from above, and FIG. FIG. 6D is a left side view of the cross junction viewed from the left side, and FIG. 6E is a right side view of the cross junction viewed from the right side. It is. In the figure, the same parts shown in each partial diagram and shown in other partial drawings are shown connected by a two-dot chain line.

  In this modified example, the part shown in satin in the drawing is different from the above embodiment. In the above embodiment, the holder lower part 10a and the holder upper part 10c are formed at an angle. However, in this modified example, in order to ensure the elastic turning action of the holder upper part 10c, the bent portion Y and the holder upper part are formed. After securing a configuration in which the end 10c (in the example shown, the bending portion 10e for engagement is provided) 10d is spaced apart in the length direction of the reinforcing bar 6, the holder upper portion 10c is in the same direction as the holder lower portion 10a. It is formed to be folded. Even with such a configuration, it is needless to say that the same effects as those of the above-described embodiment and the above-described modification can be obtained.

DESCRIPTION OF SYMBOLS 1 Formwork frame 2 Wire mesh 3 Spacer 4 Horizontal bar 5 Vertical bar 6 Rebar 6a Reinforcing bar 6b Reinforcing bar groove 7 Reinforcing bar fixing metal fittings 8 Annular insertion part 8a Insertion hole 9 Grip part 9a Upper part of grip 9b Grip lower part 10 Holder part 10a Holder lower part 10b Holder rising part 10c Holder upper part 10d End of holder upper part 10e Bending part for engagement X Cross joint part Y Bending part Z U-shaped part

Claims (5)

In a frame for a frame containing a spacer having a cross-joined portion in which a vertical bar and a horizontal bar crossed in a cross shape are joined at an intersection, the vertical bar and the vertical bar at the corner position of the cross-joined portion of the spacer Reinforcing bar fixing metal fittings of the form frame for fixing the reinforcing bars arranged crossing both the horizontal bars to the spacer,
An annular insertion part for inserting the vertical bar, a grip part for holding the horizontal bar, and a holder part for holding the reinforcing bar by bending or bending from a single wire having elasticity Provided continuously in series,
The annular insertion part is formed with an insertion hole through which the vertical bar penetrates inward by bending at the central portion in the length direction of the wire,
The holder part is
A lower part of the holder that is formed in a series at the annular insertion portion and extends so as to intersect the length direction of the reinforcing bar in a direction away from the annular insertion portion, and receives the lower end side of the reinforcing bar on the reinforcing member. When,
At the end of the lower part of the holder, a holder standing for holding the reinforcing bar on the lower part of the holder by receiving the side of the reinforcing bar and holding the reinforcing bar on the lower part of the holder. Raising part,
The end of the holder rising portion is formed in a series toward the upper end side of the reinforcing bar, and the end of the holder is separated from the length of the reinforcing bar from directly above the bent portion and above the insertion hole, from the diameter of the reinforcing bar from the insertion hole. Is extended so as to cross the length direction of the reinforcing bar in a direction approaching the annular insertion portion so as to be positioned at a narrow interval, and the upper end side of the reinforcing bar is locked through the end. A holder upper part for,
The grip part
Positioned on the opposite side of the holder portion with the annular insertion portion interposed therebetween, a series of the annular insertion portion is formed, and extends in a direction away from the annular insertion portion so as to exist on the upper end side of the horizontal bar. The upper part of the grip that can contact the upper end of the horizontal bar,
A series of U-shaped portions are formed at the end of the upper part of the grip toward the horizontal bar. The upper part of the grip is swung around the annular insertion part toward the lower end of the horizontal bar. A rebar fixing metal fitting for a frame for a structural frame, comprising: a lower grip part which is brought into contact with an upper end side and is engaged with a lower end side of a horizontal bar.   The insertion hole of the annular insertion part is formed inwardly surrounded by the wire by winding the wire one or more times, and the lower part of the holder is in series at the winding start of the annular insertion part. 2. The reinforcing bar fixing bracket for a frame for a frame according to claim 1, wherein the upper part of the grip is formed in series at the end of winding of the annular insertion part.   The end of the holder upper part of the holder part is provided with a bending part for engagement that is bent toward the upper end side of a reinforcing bar and engages with a groove between the reinforcing bar nodes. The metal fitting for reinforcing bar fixing of the form frame for the frame according to claim 1 or 2.   The bent part for contacting the grip upper part is formed on the grip upper part of the grip part on the upper end side of the horizontal bar so as to intersect with the grip bar. Reinforcing bar fixing metal fittings for a frame for a legal frame according to any one of the items.   Using the reinforcing bar fixing bracket of the frame for a frame according to any one of claims 1 to 4, a vertical bar is formed in a cross shape on a horizontal bar that is spanned between a pair of metal meshes that are arranged facing each other. A spacer having a cross-joined portion joined at an intersecting crossing point is arranged along the wire mesh so as to cross both the vertical bar and the horizontal bar toward the corner of the cross-joined portion of the spacer. The reinforcing bar is fixed to the spacer by the annular insertion part through which the vertical bar is inserted, the grip part that holds the horizontal bar, and the holder part that holds the reinforcing bar. A formwork frame for a frame with a rebar fixing bracket for the formwork frame.

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