Rebar holder

Abstract

To provide a reinforcement holding tool which can enhance workability of a welding work in crossing reinforcements.SOLUTION: A reinforcement holding part 100 maintains a reinforcement A in a state of being pressed against a reinforcement B downward from above and being intersected with each other. The reinforcement holding part 100 includes: a body part 200 having a connection part 220, a pair of leg parts 230 which extend in a lower direction while securing a space wider than a diameter of the reinforcement A by being divided into two from the connection part 220, and a support part 235 which is provided on the lower ends of each of the leg parts 230 and supports the reinforcement B from below; pressing means 340; and a movable part 330 having a rod part 310 which is installed in the connection part 220 in a state in which pressing force is added to the lower direction by the pressing means 340, and is moved upward by resisting pressing force.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a reinforcing bar holder, and more particularly to a reinforcing bar holder for maintaining a crossed state of a pair of intersecting reinforcing bars. [Background technology]

[0002] Conventionally, a method has been used to increase the strength of rebars that are connected in a grid pattern by crossing multiple rebars and welding them. When welding rebars, the crossed rebars must be in close contact with each other. For this reason, the rebars are either manually brought into close contact with each other before welding, or they are previously tied together with bundling wire before welding.

[0003] Recently, rebar holders for maintaining close contact between intersecting rebars have been proposed (see, for example, Patent Documents 1 and 2). By using such rebar holders, it is possible to maintain close contact between intersecting rebars. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-163933 [Patent Document 2] Japanese Patent Application Publication No. 2022-163934 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the reinforcing bar holders described in Patent Documents 1 and 2 do not have sufficient holding strength to bring the reinforcing bars into close contact with each other, and there is a risk that the close, intersecting state may become unstable.

[0006] The present invention has been made in view of the above problems, and an object of the present invention is to provide a reinforcing bar holder that can reliably maintain the crossed state of reinforcing bars. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the reinforcing bar holder of the present invention is a reinforcing bar holder that presses one reinforcing bar against another reinforcing bar from above and below to maintain them in a crossed state, and is equipped with a main body having a connecting part, a pair of legs that branch out from the connecting part and extend downward, and support parts that are provided at the lower ends of the legs and support the other reinforcing bar from below, a pressing means that generates a pressing force, and a movable part that has a rod part that is installed on the connecting part so that it can move up and down, the distance between the pair of legs is wider than the diameter of the one reinforcing bar, and a downward pressing force is applied to the rod part by the pressing means, and the other reinforcing bars are arranged so as to span each support part, and the one reinforcing bar is arranged so as to pass between the pair of legs above the other reinforcing bars, so that when the one reinforcing bar crosses the other reinforcing bars, the rod part presses the one reinforcing bar downward by the pressing force of the pressing means, and the one reinforcing bar pressed by the rod part is pressed against the other reinforcing bars that are supported by being spanned across each support part. The reaction force of the other reinforcing bars against the pressing force causes the one reinforcing bar to cross the other reinforcing bars. Maintain this state. [Effects of the Invention]

[0008] According to the reinforcing bar holder of the present invention, the crossing state of the reinforcing bars can be reliably maintained. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing a reinforcing bar holder according to an embodiment. [Figure 2] 2A is a cross-sectional view showing the IIa-IIa cross section in FIG. 1, and FIG. 2B is a cross-sectional view showing the IIb-IIb cross section in FIG. [Figure 3] FIG. 1(a) is a schematic diagram illustrating how a steel upper reinforcing bar holding portion is attached to a plate according to an embodiment, and FIG. 1(b) is a perspective view showing a copper upper reinforcing bar holding portion. [Figure 4] 1A and 1B are front and side views of a reinforcing bar holder according to an embodiment showing the state before the reinforcing bar is held by the reinforcing bar holder; [Figure 5] 1A and 1B are front and side views of a reinforcing bar holder according to an embodiment showing the state in which the reinforcing bar holder holds a reinforcing bar; [Figure 6] 10A and 10B are views of a reinforcing bar holder according to an embodiment showing another state in which the reinforcing bar holder holds a reinforcing bar, in which (a) is a front view of the reinforcing bar holder and (b) is a side view. DETAILED DESCRIPTION OF THE INVENTION

[0010] An example of a reinforcing bar holder according to the present invention will be described in detail below with reference to the drawings.

[0011] Fig. 1 is a perspective view showing the rebar holder 100, Fig. 2(a) is a front view, and Fig. 2(b) is a side view. In the following explanation, "upper," "lower," "right," "left," "front," and "rear" follow the definitions in Fig. 1.

[0012] The reinforcing bar holder 100 is a jig used to maintain (hold) the reinforcing bars in a crossed state to prevent them from shifting when welding two crossed reinforcing bars together or arranging multiple reinforcing bars in a lattice pattern. The reinforcing bar holder 100 is mainly composed of a main body 200 and a movable part 300 attached (installed) to the main body 200 so as to be movable up and down.

[0013] The main body 200 is integrally formed with a plate-like portion 210 formed in an inverted U shape when viewed from the front, and a ceiling-equipped cylindrical portion 260 having a hollow space inside. The plate-like portion 210 has a pair of legs 230, 230 and a connecting portion 220 connecting the upper portions of the legs 230, 230.

[0014] The legs 230, 230 extend downward from the connecting portion 220 so as to split into two, and a space S1 is secured between the legs 230, 230. The width of the space S1 in the left-right direction is set to be wider than the diameter of the reinforcing bar A (upper reinforcing bar, one reinforcing bar) that is arranged to penetrate the space S1 in the front-rear direction, as shown in Fig. 1 and Fig. 2(a).

[0015] A lower reinforcing bar holding portion (support portion) 235, 235 for holding (supporting from below) the reinforcing bar B (lower reinforcing bar, other reinforcing bar) arranged in the left-right direction is formed at the lower end of each leg portion 230, 230. As shown in FIG. 2(b), the lower reinforcing bar holding portion 235, 235 is formed by bending the tip of the leg portion 230, 230 so as to form a V shape in a side view. By arranging the reinforcing bar B so as to span the lower reinforcing bar holding portion 235, 235 formed on each leg portion 230, 230, it is possible to hold the reinforcing bar B horizontally.

[0016] The cylindrical portion 260 has a rearwardly positioned peripheral surface that is notched flat, and is connected to the plate-like portion 210 with this flatly notched portion (flat portion) in contact with the flat portion (front sidewall) of the connecting portion 220 of the plate-like portion 210. The hollow space of the cylindrical portion 260 is cylindrical and moves the rod portion 310 of the movable portion 300 up and down. As shown in FIG. 2(b), the cylindrical portion 260 has an internal space with an inner diameter large enough to accommodate the rod portion 310 and the coil spring 340 installed in the rod portion 310. Meanwhile, the diameter of the opening 265 formed in the ceiling surface 261 of the cylindrical portion 260 is large enough to allow only the rod portion 310 to pass through and to allow the rod portion 310 to rotate about the rod axis (inner diameter). Therefore, the coil spring 340 is placed in the rod portion 310 with its upper end abutting against the ceiling surface 261 of the cylindrical portion 260.

[0017] The movable part 300 has a rod part 310 having an approximately cylindrical shape with a spring bearing surface 315 formed at its lower end, a rectangular flat plate 320 attached to the spring bearing surface 315, and an eyebolt 330 attached to the upper end of the rod part 310.

[0018] Eyebolt 330 is integrally formed of gripping portion 332, which is a circular ring-shaped portion, pedestal portion 334, which is the base of the circular ring-shaped portion, and threaded portion 336, which extends downward from pedestal portion 334. In eyebolt 330, gripping portion 332, pedestal portion 334, and threaded portion 336 are arranged one above the other so that their central axes are coaxial, and by rotating gripping portion 332, threaded portion 336 rotates smoothly.

[0019] The upper end (upper end surface) of the rod portion 310 is formed with a screw hole 317 into which the threaded portion 336 of the eyebolt 330 is attached.

[0020] The plate 320 is attached horizontally to the underside of the spring bearing surface 315, with its longitudinal direction aligned with the front-to-rear direction of the space S1 (the front-to-back direction of the plate-shaped portion 210). The plate 320 has two holes 322, 322 that penetrate in the up-and-down direction on its upper surface (see FIG. 3(a)). Bolts 325, 325 are passed through the holes 322, 322, and these bolts 325, 325 detachably attach an upper reinforcing bar holding portion (pressing portion) 350 (described later) to the plate 320.

[0021] A coil spring (pressing means) 340 is disposed on the upper surface side of the spring bearing surface 315 of the rod portion 310. The coil spring 340 is configured by connecting an upper coil spring 342 and a lower coil spring 344, which have different spring constants. In a typical coil spring, the wire diameter and compressed length change depending on the spring constant. In the reinforcing bar holder 100 of this embodiment, the wire diameter and spring constant of the coil spring 340 are adjusted to be optimal overall by connecting two types of coil springs 340 (the upper coil spring 342 and the lower coil spring 344) in consideration of the length from the connecting portion 220 to the leg portions 230, 230, the distance of vertical movement of the rod portion 310, the wire diameter of the reinforcing bar, etc.

[0022] When the movable part 300 is attached to the main body part 200 so as to be movable up and down, a coil spring 340 is disposed on the rod part 310 to which the plate 320 is attached, and the upper end of the rod part 310 to which the coil spring 340 is disposed is guided from below to above the cylindrical part 260 through an opening 265 formed in a ceiling surface 261 of the cylindrical part 260. Then, the threaded part 336 of the eyebolt 330 is screwed into a threaded hole (a threaded hole formed in the upper end) 317 of the rod part 310 guided above the ceiling surface 261 of the cylindrical part 260, thereby connecting the upper end of the rod part 310 to the eyebolt 330. The movable part 300 obtains a pressing force due to the elastic force of the coil spring 340 attached to the rod part 310, and the plate 320 is maintained in a state of being pressed downward against the cylindrical part 260 of the main body part 200. Furthermore, when the rod portion 310 is pulled upward against the pressing force of the coil spring 340, the movable portion 300 moves upward.

[0023] As described above, the upper reinforcing bar holding part 350 can be attached to the underside of the plate 320. Fig. 3(a) is a schematic diagram illustrating how the steel upper reinforcing bar holding part 351 is attached to the plate 320, and Fig. 3(b) is a perspective view showing the copper upper reinforcing bar holding part 356.

[0024] 3(a), the steel upper reinforcing bar holding portion 351 has two flat plate portions 352 that are approximately the same size as the plate 320, and an inverted V-shaped plate 353. The inverted V-shaped plate 353 is formed by bending the central portion in the short direction into an inverted V shape, and its upper end portion (ridge portion) is connected to the central portion of the flat plate portion 352 located above it. The upper reinforcing bar holding portion 351 brings the peripheral surface (upper peripheral surface) of the upper portion of the reinforcing bar A located below the upper reinforcing bar holding portion 351 into contact (line contact) with the underside of the inverted V-shaped plate 353 at two points, and guides the reinforcing bar A into a recess in the inverted V, thereby holding the reinforcing bar A with the upper reinforcing bar holding portion 351.

[0025] 3(a), the upper reinforcing bar holding portion 351 (the flat plate portion 352 and the inverted V-shaped plate 353) has screw holes 354 formed therein so as to correspond to the positions of the holes 322 of the plate 320. As shown in FIG. 3(a), the upper reinforcing bar holding portion 351 (the upper surface of the flat plate portion 352) is brought into contact with the lower surface of the plate 320, and bolts 325 are screwed into the screw holes 354 of the upper reinforcing bar holding portion 351 through the holes 322 of the plate 320, thereby making it possible to detachably attach the upper reinforcing bar holding portion 351 to the plate 320.

[0026] Furthermore, the upper reinforcing bar holding portion 350 used in the reinforcing bar holder 100 is not limited to the steel upper reinforcing bar holding portion 351 shown in Figure 3(a), but a copper upper reinforcing bar holding portion 356 as shown in Figure 3(b) can also be used.

[0027] The copper upper reinforcing bar holding portion 356 is a horizontally laid square pillar with a surface roughly the same as the underside of the plate 320, with the underside scraped away in the front-to-back direction so that it has an inverted M-shaped cross section when viewed from the front. For this reason, the underside of the upper reinforcing bar holding portion 356 is scraped into an inverted V shape, and like the steel upper reinforcing bar holding portion 351, the circumferential surface (upper circumferential surface) of the upper part of the reinforcing bar A comes into contact (line contact) at two points on the underside of the upper reinforcing bar holding portion 356 and is guided into the recess of the inverted V, whereby the reinforcing bar A is held by the upper reinforcing bar holding portion 356.

[0028] Screw holes 357, 357 are also formed in the upper reinforcing bar holding portion 356 so as to correspond to the positions of the holes 322, 322 of the plate 320. As with the upper reinforcing bar holding portion 351, the upper surface of the upper reinforcing bar holding portion 356 is brought into contact with the lower surface of the plate 320, and bolts 325, 325 are fastened to the screw holes 357, 357 of the upper reinforcing bar holding portion 356 via the holes 322, 322 of the plate 320, thereby enabling the upper reinforcing bar holding portion 356 to be detachably attached to the plate 320.

[0029] Next, the operation of the reinforcing bar holder 100 will be described. As already explained, the rebar holder 100 is used to maintain the crossed state of the rebars so that they do not shift when welding two crossed rebars together. The rebar holder 100 is also used to properly maintain the posture of multiple rebars when arranging them in a lattice pattern with multiple intersections. The rebar holder 100 can be attached to rebars arranged in various ways, such as on a horizontal plane, a vertical plane, or other surfaces.

[0030] When attaching the reinforcing bar holder 100 to intersecting reinforcing bars A and B, as shown in Figures 4(a) and (b), the worker pulls the movable part 300 upward relative to the main body part 200 via the eyebolt 330, and positions the reinforcing bar holder 100 relative to the intersecting reinforcing bars A and B so that the lower reinforcing bar holding parts 235, 235 (hereinafter simply referred to as the lower reinforcing bar holding part 235) are positioned directly below the lower reinforcing bar B, and the upper reinforcing bar holding parts 351, 356 (hereinafter simply referred to as the upper reinforcing bar holding part 350) attached to the plate 320 are positioned directly above the upper reinforcing bar A.

[0031] In this state, the worker gradually lowers the movable part 300, so that the lower surface of the upper reinforcing bar holding part 350 (the lower surface bent into an inverted V shape) comes into contact with the upper surface of the reinforcing bar A, as shown in Figures 5(a) and 5(b). Also, the upper surface of the lower reinforcing bar holding part 235 (the upper surface bent into a V shape) comes into contact with the lower surface of the reinforcing bar B. Thereafter, the elastic force (pressing force) of the coil spring 340 causes the upper reinforcing bar holding part 350 to press the reinforcing bar A, and the reinforcing bar A further presses the reinforcing bar B supported by the lower reinforcing bar holding part 235 from below, thereby maintaining a tight intersecting state at the intersection between the reinforcing bars A and B.

[0032] In another installation procedure for the reinforcing bar holder 100, a worker holds the reinforcing bar holder 100 with the eyebolt 330 and presses the lower surface of the upper reinforcing bar holding portion 350 against reinforcing bar A. At this time, to prevent the lower reinforcing bar holding portion 235 from interfering with reinforcing bar B, the worker may press the upper reinforcing bar holding portion 350 while tilting the reinforcing bar holder 100 so that the rod axis is not perpendicular to reinforcing bars A and B, or may press the upper reinforcing bar holding portion 350 in a position shifted behind reinforcing bar B, as shown in FIGS. 6( a) and 6(b). The force with which the worker presses reinforcing bar A downward via the upper reinforcing bar holding portion 350 compresses the coil spring 340, causing the main body 200 to move downward relative to the movable portion 300, and the lower reinforcing bar holding portion 235 to be positioned below reinforcing bar B. By tilting or sliding the reinforcing bar holder 100 in this state, the upper surface of the lower reinforcing bar holding portion 235 is moved directly below reinforcing bar B. When the worker gradually releases the force pressing the upper reinforcing bar holding part 350 against the reinforcing bar A, the elastic force of the coil spring 340 causes the main body part 200 to move upward relative to the movable part 300, and the lower reinforcing bar holding part 235 comes into contact with the underside of the reinforcing bar B. As a result, as shown in Figures 5(a) and 5(b), at the intersection of the reinforcing bar A and the reinforcing bar B, the reinforcing bars A and B held in the vertical direction by the upper reinforcing bar holding part 350 and the lower reinforcing bar holding part 235 are maintained in a tightly intersecting state.

[0033] In this alternative installation procedure, compared to the previously described method, the worker does not lift the movable part 300 relative to the main body part 200, but rather presses the upper reinforcing bar holding part 350 against the reinforcing bar A, and the worker can lift the movable part 300 relative to the main body part 200 by using the reaction force of this action. This makes it easier to install the reinforcing bar holder 100. Furthermore, since the entire installation process can be completed while holding the eyebolt 330 of the reinforcing bar holder 100 with one hand, this method is also excellent in that it allows the other hand to be used for other tasks, such as holding one of the reinforcing bars.

[0034] As another installation procedure, while lifting the movable part 300 relative to the main body part 200 via the eyebolt 330, only one of the lower reinforcing bar holding parts 235 is hooked onto the reinforcing bar B. In this state, while rotating the reinforcing bar holder 100 around one of the lower reinforcing bar holding parts 235 as an axis, the other lower reinforcing bar holding part 235 is hooked onto the reinforcing bar B. After that, when the worker releases his / her hand from the eyebolt 330, the reinforcing bars A and B, which are held in the vertical direction by the upper reinforcing bar holding part 350 and the lower reinforcing bar holding part 235 due to the elastic force of the coil spring 340, remain in a tightly intersecting state.

[0035] The three installation procedures described as examples can be selected as appropriate depending on the spacing between the rebars and the space available for workers to work in.

[0036] The reinforcing bars to which the reinforcing bar holder 100 is attached using this installation procedure can reliably maintain a tight contact state at the intersection of the reinforcing bars A and B. At this time, a space S1 is provided around the intersection, ensuring sufficient left-right spacing (spatial distance). Furthermore, with regard to the vertical dimension of the space S1, a sufficient height dimension (spatial distance) is ensured, taking into account the vertical movement of the rod portion 310. In other words, the presence of the space S1 ensures sufficient space around the intersection of the reinforcing bars A and B.

[0037] Specifically, a sufficient distance is ensured between the intersection of reinforcing bars A and B and leg portion 230 (lower reinforcing bar holding portion 235) and tubular portion 260. Therefore, when the intersection of reinforcing bars A and B is held with reinforcing bar holder 100 and reinforcing bars A and B are welded, it becomes easier to ensure sufficient space around the welding area to insert welding equipment, thereby improving the efficiency of the welding work. In particular, even when welding work is performed by a robot or the like, sufficient space can be ensured around the welding area, allowing the robot or the like to smoothly perform the welding work, making it easier to ensure speed and accuracy in the welding work.

[0038] In addition, when a large number of reinforcing bars are arranged in a lattice pattern or in a three-dimensional (curved) shape, the lattice-shaped reinforcing bars can be maintained in an appropriate posture by holding only the required intersections with reinforcing bar holders 100, rather than fixing all intersections with reinforcing bar holders 100.

[0039] Specifically, when reinforcing bar holder 100 is attached to the intersection of reinforcing bar A and reinforcing bar B and the intersecting state of reinforcing bar A and reinforcing bar B is maintained, reinforcing bars A and B maintain their positions in the longitudinal direction. This is because reinforcing bar holder 100 supports reinforcing bar B from below at two points with lower reinforcing bar holding portion 235, and also supports reinforcing bar A from above with upper reinforcing bar holding portion 350, so reinforcing bars A and B are stably fixed in an appropriate position with support at three points. For this reason, for example, as shown in Figure 1, reinforcing bar C placed on reinforcing bar B can also be tightly attached to reinforcing bar B by its own weight on top of the stably placed reinforcing bar B.

[0040] Therefore, by fixing the intersection of reinforcing bar A and reinforcing bar B with reinforcing bar holder 100, a suitable tight fit can also be achieved at the intersection of reinforcing bar B and reinforcing bar C, and in this state, welding can be carried out at the intersection of reinforcing bar B and reinforcing bar C. In other words, reinforcing bar holder 100 not only directly achieves a tight fit at the intersection to be welded, but can also be used to indirectly fix adjacent intersections in tight fit.

[0041] For example, in a location with a curved shape where it is difficult to attach the rebar holder 100 directly, the rebar holder 100 can be attached to an adjacent intersection where it is easier to attach, and can also function as a tool for temporary support during the process of assembling the rebar.

[0042] The reinforcing bar holder 100 of this embodiment can reliably maintain the intersecting state of the reinforcing bars with simple operations. That is, the reinforcing bar holder 100 can tightly hold the intersecting points of the reinforcing bars A and B in close contact at three points on the reinforcing bars by utilizing the elastic forces of the coil springs 340, simply by pulling up the movable part 300 against the elastic force of the coil springs 340, placing (hooking) the pair of lower reinforcing bar holding parts 235 on the reinforcing bar B, and placing (pressing) the upper reinforcing bar holding part 350 on the reinforcing bar A.

[0043] The reinforcing bar holder 100 of this embodiment also has the following other advantages.

[0044] Because the upper reinforcing bar holding part 350 is attached to the plate 320 provided at the lower end of the rod part 310, the crossing angle of the reinforcing bar A relative to the reinforcing bar B can be adjusted by rotating the rod part 310 during or after attachment to the reinforcing bar, while maintaining the horizontal state of the plate 320 and the upper reinforcing bar holding part 350. Conversely, even if the crossing angle of the reinforcing bar A relative to the reinforcing bar B is not 90 degrees, the rod part 310 can be rotated according to the crossing angle, so the upper reinforcing bar holding part 350 can reliably hold the reinforcing bar A.

[0045] Furthermore, the underside of the upper reinforcing bar holding portion 350 is bent to form an inverted V-shaped cross section, so that the recesses in the underside that form an inverted V-shaped cross section make line contact at two points on the upper peripheral surface of the reinforcing bar A, thereby enabling it to be securely held, and the upper reinforcing bar holding portion 350 will not easily slip off from the reinforcing bar A. Similarly, the upper side of the lower reinforcing bar holding portion 235 is bent to form a V-shaped cross section, so that the recesses in the upper side that form a V-shaped cross section make line contact at two points on the lower peripheral surface of the reinforcing bar B, thereby enabling it to be securely held, and the lower reinforcing bar holding portion 235 will not easily slip off from the reinforcing bar B.

[0046] Furthermore, because the upper reinforcing bar holding portion 350 has an inverted V-shaped cross section and the lower reinforcing bar holding portion 235 has a V-shaped cross section, the reinforcing bar holder 100 can be attached regardless of the size (diameter) of the reinforcing bar held therein, as long as the V-shaped portions can make line contact at two points. Regarding the space S1 between the lower reinforcing bar holding portions 235, the amount of lift of the movable portion 300 relative to the main body portion 200 can also be set as desired, for example, by setting the spring constant of the coil spring 340 as desired. Therefore, the reinforcing bar holder 100 can be applied to reinforcing bars of various sizes, eliminating the need to prepare a reinforcing bar holder 100 for each reinforcing bar size.

[0047] Furthermore, the elastic force of the coil spring 340 is used as a pressing force to maintain the intersection of the reinforcing bars A and B. This eliminates the need to firmly fasten and fix the reinforcing bars A and B using a clamping jig or other device that supports the intersection at two points. Furthermore, compared to using a clamping jig or other device to fasten the reinforcing bars, the space for guiding the reinforcing bars A and B (the space between the upper reinforcing bar holding portion 350 and the lower reinforcing bar holding portion 235) can be easily widened by simply pulling up the eyebolt 330. After guiding the reinforcing bars A and B into this space, the elastic force of the coil spring 340 can be used to lower the eyebolt 330 (rod portion 310). This allows the upper reinforcing bar holding portion 350 and the lower reinforcing bar holding portion 235 to hold the reinforcing bars A and B, and the elastic force of the coil spring 340 can maintain the state in which the reinforcing bar A is pressed against the reinforcing bar B. Therefore, the work of attaching and detaching the reinforcing bar holder 100 is easier than with conventional clamp jigs and the like, and the convenience of the work of attaching and detaching the reinforcing bar holder 100 can be improved.

[0048] Furthermore, when welding reinforcing bars A and B to which reinforcing bar holder 100 is attached, there is a risk that metal pieces (spatter) scattered by the welding operation will adhere to the surrounding area, resulting in the reinforcing bar A and the upper reinforcing bar holding portion 351 being welded together. In this case, a copper upper reinforcing bar holding portion 350, like upper reinforcing bar holding portion 356, is attached to plate 320 and welding is performed. Because copper is a metal with excellent thermal conductivity, even if the temperature of reinforcing bars A and B rises, the temperature of copper upper reinforcing bar holding portion 356 itself does not increase easily, making it difficult for upper reinforcing bar holding portion 356 to be welded to reinforcing bar A. In other words, the upper reinforcing bar holding portion 356 will not be welded to reinforcing bar A during the welding operation of reinforcing bars A and B, and as a result, it is possible to prevent the reinforcing bar holder 100 from being welded to reinforcing bar A.

[0049] Furthermore, the upper reinforcing bar holding portion 350 is detachably attached to the plate 320. Therefore, by using a steel upper reinforcing bar holding portion 351, even if the upper reinforcing bar holding portion 351 is welded to the reinforcing bar A, the upper reinforcing bar holding portion 351 can be removed from the plate 320. Therefore, welding the upper reinforcing bar holding portion 351 to the reinforcing bar A can be prevented from making it impossible to remove the reinforcing bar holder 100 from the reinforcing bar A (becoming fixed to the reinforcing bar A). Furthermore, because the steel upper reinforcing bar holding portion 351 is cheaper than the copper upper reinforcing bar holding portion 356, it is possible to reduce the cost of the upper reinforcing bar holding portion 350.

[0050] Furthermore, as already explained, the rod portion 310 is configured to rotate relative to the cylindrical portion 260, so that the angle of the upper reinforcing bar holding portion 350 can be flexibly adjusted depending on the arrangement of the reinforcing bar A. Meanwhile, the longitudinal ends of the plate 320 and the upper reinforcing bar holding portion 350 are positioned so as to be exposed to the front and rear of the main body portion 200, respectively. Therefore, even when the rod portion 310 is rotated, the edges of the plate 320 and the upper reinforcing bar holding portion 350 come into contact with the inner parts of the legs 230, 230 of the main body portion 200. Therefore, even when the rod portion 310 is rotated, it is possible to restrict the angle of the plate 320 and the upper reinforcing bar holding portion 350 to an appropriate range (a range narrower than 360 degrees).

[0051] Although the reinforcing bar holder according to the present invention has been described in detail above using the drawings, the reinforcing bar holder according to the present invention is not limited to the embodiment shown. For example, the reinforcing bar holder 100 shown in the embodiment has been described for a case in which reinforcing bars A and B are straight, as shown in Figures 1 and 4 to 6. However, with the reinforcing bar holder according to the present invention, reinforcing bars A and B are not necessarily limited to being straight, and even if they are bent, the intersection of reinforcing bars A and B can be properly held.

[0052] For example, even if the reinforcing bar B located below is bent in a U-shape or a V-shape when viewed from the front, the bent reinforcing bar B can be spanned over the lower reinforcing bar holding portion 235, and when the spanned reinforcing bar intersects with the reinforcing bar A at the midpoint between the two lower reinforcing bar holding portions 235, the rod portion 310 can be lowered to the intersection of the reinforcing bar A and the reinforcing bar B. In this case, the upper reinforcing bar holding portion 350 can press the reinforcing bar A downward against the reinforcing bar B, so that the intersection of the reinforcing bar A and the reinforcing bar B can be maintained.

[0053] Furthermore, in the reinforcing bar holder 100 of this embodiment, the upper reinforcing bar holding part 350 is detachably attached below the plate 320, and the upper reinforcing bar holding part 350 is configured to press the reinforcing bar A downward. However, if there is a low risk that the reinforcing bar A will be welded to the plate 320 during the welding operation between the reinforcing bar A and the reinforcing bar B, the upper reinforcing bar holding part 350 may not be attached to the plate 320, and the plate 320 may directly press down the reinforcing bar A.

[0054] Furthermore, in the above description of the rebar holder 100, a spring bearing surface 315 is formed at the lower end of the rod portion 310, and the coil spring 340 is installed above this spring bearing surface 315. However, the installation structure of the coil spring 340 is not limited to being installed above the spring bearing surface 315. For example, instead of providing the spring bearing surface 315 on the rod portion 310, a plate 320 may be attached to the lower end of the rod portion 310, and the plate 320 may serve as the spring bearing surface. Furthermore, if the plate 320 does not have a non-flat surface, a washer member or the like may be placed on the upper surface of the plate 320 as the spring bearing surface. [Explanation of symbols]

[0055] 100...Rebar holder 200...Main body 210 ... Plate-shaped part 220…Connection part 230...legs 235…Lower reinforcing bar holding part (support part) 260 ... Cylindrical part 261 ... Ceiling surface 265 …Aperture 300...Movable part 310 ... Rod section 315...Spring bearing surface 317...screw hole 320...plate 322…hole 325...volts 330...eyebolt 332...Gripping part 334 ... base 336 ...Threaded section 340... Coil spring (pressing means) 342 ...Upper coil spring 344...Lower coil spring 350, 351, 356 ... Upper rebar holding part (contact part) 352...Flat plate part 353...Inverted V-shaped board 354,357 ...Screw holes S1…Space

Claims

1. A reinforcing bar holder that holds one reinforcing bar in a crossed state by pressing it against another reinforcing bar from above and below, a main body having a connecting portion, a pair of legs extending downward from the connecting portion, and a support portion provided at the lower end of each leg to support the other reinforcing bar from below; a movable portion having a pressing means for generating a pressing force and a rod portion installed on the connecting portion so as to be movable up and down; Equipped with The distance between the pair of legs is wider than the diameter of the one reinforcing bar, The pressing force is applied to the rod portion in a downward direction by the pressing means, A reinforcing bar holder in which the other reinforcing bars are arranged so as to span each of the support parts, and the first reinforcing bar is arranged so as to pass between the pair of legs above the other reinforcing bar, so that when the first reinforcing bar crosses the other reinforcing bar, the rod part presses the first reinforcing bar downward by the pressing force of the pressing means, and the first reinforcing bar pressed by the rod part is pressed against the other reinforcing bars supported by being spanned across each of the support parts, and the reaction force of the other reinforcing bars against the pressing force maintains the first reinforcing bar crossed against the other reinforcing bars.

2. 2. The reinforcing bar holder according to claim 1, wherein a pressing part that is pressed against an upper peripheral surface of the one reinforcing bar is detachably provided at a lower end of the rod part.

3. 3. The reinforcing bar holder according to claim 2, wherein the pressing portion is formed with a recess for guiding the upper peripheral surface of the one reinforcing bar thereinto.

4. The reinforcing bar holder according to claim 2 , wherein the pressing portion is made of copper.

5. The reinforcing bar holder according to claim 1 , wherein the rod portion is provided on the connecting portion in a state where it can rotate about a rod axis of the rod portion.

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