JP3911497B2 - Reinforcing bar joints - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a cross-section binding metal fitting for reinforcing bars that reinforce building columns and beams, cast-in-place concrete piles (underground piles), concrete walls (retaining walls), bridge piers of elevated roads, and other various concrete structures.

  As an example, the reinforcing steel bar for reinforcement of cast-in-place concrete piles, which will serve as the earthquake-resistant foundation of a hierarchical building, is a vertical bar (main bar) and a horizontal bar (hoop bar) in a posture laid down at the construction site. Although the assembly work is performed in a crossed state, the welding work for fixing the crossed part is very heavy labor, and the accuracy of welding is likely to vary. In addition, the base material (rebar) is originally provided by the high heat of welding. There is a problem in that the strength that is present is lowered after a while.

Accordingly, products as shown in FIGS. 22 to 24 are provided as bundling fittings used in place of welding the crossing portions of the reinforcing bars, and this is considered to be the publicly known technique that most closely approximates the present invention.

  This rebar cross-section binding metal fitting was bent from a single stainless steel plate having a length (L) of about 20 mm and a thickness (T) of about 0.4 mm into a relatively simple, substantially U-shape. A pair of elastic clips (C) and (C) that are the same as each other are spot-welded in the central part that are back-to-back, and are assembled and integrated in a mutually orthogonal state.

22 to 24 , (P) is the arc back surface (1) of the spot welds of each other, and (2a) and (2b) are a pair of opposing faces that continue from the arc back surface (1) in a smooth, substantially U-shape. Side surfaces (3a) and (3b) show a pair of reinforcing bar insertion guide pieces bent into a trumpet shape that outwardly spreads from the bent leading ends of both side surfaces (2a) and (2b).
Design Registration No. 1181510

However, in such a configuration of the binding metal, is therefore, its use above figure 24 to each other the resilient clip of the same size and shape (C) (C), a fixed product obtained by integrally welded to the pair of orthogonal states Such rebars (Y) (X) having the same diameter (d) as described above are limited to binding at a crossed portion as a cross shape. For example, the rebars (Y) (X) are X-shaped. It cannot be used for bundling non-orthogonal parts as a mold, and is inferior in convenience and versatility.

  Moreover, each of the elastic clips (C) and (C) has a simple substantially U-shape consisting of a pair of side surfaces (2a) and (2b) facing the arc back surface (1). For example, the opening width (W1) of the innermost part is about 12.5 mm at the maximum part, the opening width (W2) of the inlet part is about 12 mm, and the thickness (T) of the stainless steel plate is large even if the difference is large. There is only a level corresponding to (about 0.4 mm), and there is no step portion that functions as a check claw for the reinforcing bars (Y) and (X).

  Therefore, while it is easy to insert into the reinforcing bars (Y) and (X), for example, a pile that is rolled and moved along the pier to change the place where the assembled reinforcing bar is placed, or the reinforcing bar is excavated on the ground A pair of elastic clips (C) and (C) when a strong strain force is applied to the reinforcing bars (Y) and (X) when they are lifted and raised by a crane or the like to be inserted into the hole. In combination with the fixed product integrated with welding, the binding metal fittings will easily fall out from the crossing part of the reinforcing bars (Y) (X), and if there is a welding defect, It can even happen that the spot weld (P) breaks down or breaks.

Note that the disclosure of the bar holder design registration No. 1181510 is a synthetic resin product, which is also a back to back are the same pair of clips together, because they are integrally molded perpendicular to each of the other, 22-24 The same problem as that of the above-described binding metal fittings shown in Fig. 1 is more easily generated, and when used for binding between reinforcing bars, it is not possible to guarantee the binding strength and stability that can withstand external forces from the reinforcing bars.

  The present invention aims to improve such problems, and in order to achieve the object, in claim 1, a flat back surface is formed from a single stainless steel plate, a hardened steel plate, or other metal plate that can exhibit springiness. And is bent into an outwardly expanded state from now on, so that it is shaped into a substantially dovetail shape consisting of a pair of symmetrically facing circular arc side surfaces that divide the inner back part of the opening width wider than the opening width of the inlet part. A pair of first and second elastic clips,

  The first elastic clip is a small dovetail shape substantially corresponding to the diameter of the horizontal stripe, the second elastic clip is a large dovetail shape substantially corresponding to the diameter of the vertical stripe, and the size of the dovetail shape is made different.

  Both elastic clips are pivotally attached to each other in the center of the flat back surface by a single rivet that is crimped to the cross-shaped tightening state that maintains the rigidity that does not rotate relative to each other unless force is applied. As well as

  One non-slip protrusion from the both ends of the back surface, which is scattered on the longitudinal center line of the flat back surface of each elastic clip and can be locked to the corresponding nodes and ribs of the reinforcing bars. While protruding one by one toward the inner part of the dovetail mold,

  Similarly, by bending the opposing pair of reinforcing bar insertion guide pieces into an outwardly expanding trumpet shape, following the bending start of both arc side surfaces in each elastic clip,

  As a check claw for a reinforcing bar in which the bending ridge lines of both insertion guide pieces are relatively inward, the dovetail-shaped inlet portion is approximately 5.5 times the constant thickness of the metal plate material than the opening width of the inner back portion. A narrow opening width with a large difference corresponding to is maintained.

  Further, according to the second aspect of the present invention, a single stainless steel plate, a hardened steel plate, or another metal plate material that can exhibit spring properties is bent and raised from the flat back surface to the outward expansion state. Comprising a pair of first and second elastic clips shaped in a substantially dovetail shape comprising a pair of symmetrically facing circular arc side surfaces that define an inner depth of an opening width wider than the width;

  The first elastic clip is a small dovetail shape substantially corresponding to the diameter of the horizontal stripe, the second elastic clip is a large dovetail shape substantially corresponding to the diameter of the vertical stripe, and the size of the dovetail shape is made different.

  The two elastic clips are pivoted into an L-shaped tightening state in which one rivet that is crimped to one end of the flat back surface maintains a hardness that does not rotate relative to each other unless a forcible rotational force is applied. While wearing

  A plurality of non-slip protrusions that are scattered on the longitudinal center line of the flat back surface of each elastic clip and can be locked to the corresponding nodes and ribs of the reinforcing bar are connected to the other end of the back surface. While projecting from the part toward the inner part of the dovetail mold,

  Similarly, by bending the opposing pair of reinforcing bar insertion guide pieces into an outwardly expanding trumpet shape, following the bending start of both arc side surfaces in each elastic clip,

  As a check claw for a reinforcing bar in which the bending ridge lines of both insertion guide pieces are relatively inward, the dovetail-shaped inlet portion is approximately 5.5 times the constant thickness of the metal plate material than the opening width of the inner back portion. A narrow opening width with a large difference corresponding to is maintained.

  Furthermore, in claim 3, the opening of the entrance portion is formed by bending a flat back surface from a single stainless steel plate, a hardened steel plate, or other metal plate material that can exhibit spring properties, and an outwardly expanded state. Comprising a pair of first and second elastic clips shaped in a substantially dovetail shape comprising a pair of symmetrically facing circular arc side surfaces that define an inner depth of an opening width wider than the width;

  The first elastic clip is a small dovetail shape substantially corresponding to the diameter of the horizontal stripe, the second elastic clip is a large dovetail shape substantially corresponding to the diameter of the vertical stripe, and the size of the dovetail shape is made different.

  One of the elastic clips, one of which is the center of the flat back surface and one end of the flat back surface of the other, is riveted to prevent any rotational forcing. While being pivotally attached to a T-shaped tightening state that keeps the hardness that does not rotate as much as possible,

  The non-slip protrusions that are scattered on the longitudinal center line of the flat back surface of each elastic clip and can be locked to the corresponding nodes and ribs of the reinforcing bars are arranged on the back surface of one elastic clip. One each from both ends, as a plurality from the other end of the back surface of the other elastic clip, one of which protrudes toward the inner back of the dovetail mold,

  Similarly, by bending the opposing pair of reinforcing bar insertion guide pieces into an outwardly expanding trumpet shape, following the bending start of both arc side surfaces in each elastic clip,

  As a check claw for a reinforcing bar in which the bending ridge lines of both insertion guide pieces are relatively inward, the dovetail-shaped inlet portion is approximately 5.5 times the constant thickness of the metal plate material than the opening width of the inner back portion. A narrow opening width with a large difference corresponding to is maintained.

  In claim 4, which is dependent on claim 1, 2 or 3, one or more reinforcing bars each projecting and extending a part of the insertion guide piece for reinforcing bars facing each other inward from the bent ridge line. It is characterized by being cut and raised as a check claw.

  A fifth aspect dependent on the first, second, or third aspect is characterized in that the first and second elastic clips have different lengths.

  According to the configuration of claim 1, one set of the first and second elastic clips that are bent and shaped in a substantially dovetail shape that differs in size from the spring-like metal plate material is formed in the center part of the flat back surface. Since it is pivotally attached to the cross-shaped tightened state by the rivets of the book, the operator forcibly makes the relative rotation, so that the horizontal and vertical bars are perpendicular to each other as a cross shape and also as an X-shape Non-orthogonal parts can be conveniently bundled and is highly versatile.

  Further, according to the configuration of claim 2, since one pair of the first and second elastic clips is pivotally attached to the L-shaped tightened state by one rivet at the ends of the flat back surface. When the operator forcibly makes the relative rotation, the portion where the horizontal and vertical stripes intersect at right angles and the non-right angle V shape can be conveniently bundled, and the versatility is excellent.

  Furthermore, if the configuration of claim 3 is adopted, a pair of the first and second elastic clips is also formed between the center portion of one flat back surface and one end portion of the other flat back surface, Since it is pivotally attached to a T-shaped tightening state by one rivet, the operator forcibly makes a relative rotation so that the transverse and vertical stripes have a right-angled T-shape or a non-right-angle pseudo. The T-shaped crossing portion can be conveniently bundled and is excellent in versatility.

  In that case, even if it exists in any of Claims 1-3, from a bending raising tip part of both circular arc side surfaces in each elastic clip, a pair of facing insertion guide pieces for reinforcing bars are bent into an outwardly spreading trumpet type. The pair of reinforcing bar check claws that are inward relative to this has a fixed thickness of about 5 mm in the metal plate material as compared to the opening width of the inner groove at the dovetail-shaped inlet portion. Since the opening width is narrow with a large difference equivalent to 5 times, the corresponding reinforcing bar can be accurately guided from the insertion guide piece expanding into the trumpet type to the inner part of the dovetail type, and the reinforcing bar A strong and resilient elastic force generated when the dovetail-shaped narrow inlet is expanded, combined with the check action of both check claws, prevents each elastic clip from falling out of the reinforcing bar. There is an effect that can be obtained.

  Further, in any one of claims 1 to 3, a plurality of anti-slip protrusions that can be engaged with the corresponding reinforcing bar nodes and ribs from the flat back surface of each elastic clip have a dovetail shape. Both elastic clips do not have the possibility that each elastic clip slides along the axial direction of the reinforcing bar or swings along the circumferential direction of the reinforcing bar. The crossing part of the reinforcing bars can be kept in a stable and strong bundling state, coupled with the fact that it is in a tightening state that does not rotate relative to each other unless it receives a rotation forcing force.

  In particular, if the construction of claim 4 is adopted, the inlet portion of the dovetail type will be secured further narrower than the opening width of the inner back portion, so that the above-mentioned restoring pressure can be further strengthened. effective.

Hereinafter, the specific configuration of the present invention will be described in detail with reference to the drawings. In FIGS. 1 to 13 showing the first embodiment of the binding metal fitting, (C1) and (C2) are fixed lengths (L) (for example, Opening width (W1) (W1) at the inner back from one stainless steel plate or hardened steel plate having a thickness (T) of about 30 mm) and a thickness (T) (for example, about 0.8 mm) or other metal plate that can exhibit springiness. ) Is a set of first and second elastic clips that are bent into a substantially dovetail shape with a narrower opening width (W2) (W2) than the inlet portion. For example, as a combination of a name: D13 and a name: D19, This is applied to the crossing unity of reinforcing bars (X) and (Y) whose diameters (D1) and (D2) are different in size.

  Therefore, of the two elastic clips (C1) and (C2), one of the first elastic clips (C1) has a small dovetail shape substantially corresponding to the diameter (D1) of the transverse stripe (X), and the second elastic clip of the other. As the clip (C2) is a large dovetail shape substantially corresponding to the diameter (D2) of the vertical stripe (Y), a difference is given to the size of the dovetail shape.

  That is, as apparent from FIGS. 1 to 4, each of the first and second elastic clips (C1) and (C2) has a substantially dovetail shape, and the flat back surface (11a) (11b) and A pair of symmetrical opposing arc side surfaces (12a) (12a) (12b) (12b) which can be elastically pressed to the outer peripheral surface of the corresponding reinforcing bar (X) (Y) by being bent in an outwardly expanded state. And. (Α) and (α) are the bending crossing angles from the back surfaces (11a) and (11b) in the two arc side surfaces (12a), (12a), (12b), and (12b), and an obtuse angle of about 100 degrees. Presents. (F1) and (F1) indicate the ridge lines that are bent from the back surfaces (11a) and (11b).

  Moreover, the corresponding reinforcing bar insertion guide pieces (13a), (13a), (13b), and (13b) face each other continuously from the bent leading ends of both arc side surfaces (12a), (12a), (12b), and (12b). Reinforcing bar check claws in which the bent ridgelines (F2) and (F2) of both insertion guide pieces (13a), (13a), (13b), and (13b) are relatively inward by being bent into a trumpet type that outwardly spreads. (14a) (14a) (14b) (14b) is designed to function.

  By the way, for the first embodiment of the present invention, if the numerical value of the product-bundling bracket is exemplified, both arc side surfaces (12a) of the first elastic clip (C1) applied to the transverse line (X) of the nominal name: D13 ( The opening width (W1) of the inner back section partitioned by 12a) is about 12 mm at the maximum portion, and the bending start height from the flat back surface (11a) on both arc side surfaces (12a) (12a) (H1) is also about 12 mm, the bending height (H2) from both arc side surfaces (12a) (12a) of the reinforcing bar insertion guide pieces (13a) (13a) is about 4 mm, and the reinforcing bar check pawl ( 14a) The opening width (W2) of the inlet portion secured between the facing surfaces of (14a) is dimensioned to about 7.5 mm, which is narrower than the opening width (W1) of the inner back portion. Dimensional difference of width (W1) (W2) As about 4.5 mm, corresponding to about 5.5 times the fixed thickness of the metal sheet (T) (about 0.8 mm).

  On the other hand, as the above-mentioned dimension of the second elastic clip (C2) applied to the vertical line (Y) of the name D19, the diameter (D2) of the vertical line (Y) is larger than the diameter (D1) of the horizontal line (X). Because of the large relationship, each is set as a proportionally large numerical value. However, the length (L) of both elastic clips (C1) and (C2) is preferably sized to at least about 25 mm. This is because it is useful for preventing the falling from the reinforcing bars (X) and (Y) to be applied.

  In any case, the opening width (W1) (W1) of the inner back portion defined by both arc side surfaces (12a) (12a) (12b) (12b) of each elastic clip (C1) (C2) is The diameters (D1) and (D2) of the reinforcing bars (X) and (Y) to which the binding metal fittings are applied have been commercialized as narrow dimensions in advance so that they can be confirmed from the above numerical values. X) It bites on the outer peripheral surface of (Y) in an elastic manner. Combined with the inward reinforcing bar check claws (14a), (14a), (14b), and (14b) having a function of preventing the reinforcing bars from being released from the reinforcing bars (X) and (Y), it has a high strength and stability. You can get the state.

  One set of the first and second elastic clips (C1) and (C2) is a flat back surface (11a) (11b) in a back-to-back state where the two members are in contact with each other, and the back surfaces (11a) (11b). It is pivotally attached by one rivet (15) that is caulked so as to penetrate through the center of each other.

  However, in the pivotally attached state, the elastic clips (C1) and (C2) do not rotate freely around the rivet (15), and the operator applies a direct rotational forcing force by the operator's own operator. Only when a rotational forcing force is indirectly applied through the reinforcing bars (X) and (Y), the tightening state is maintained so as to be able to finally rotate relatively.

  As described above, the two elastic clips (C1) and (C2) are pivotally attached to each other by a single rivet (15) on the flat back surfaces (11a) and (11b). Of the flat back surfaces (11a) and (11b) of the elastic clips (C1) and (C2), one from each of the remaining ends excluding the pivoting portion of the rivet (15). The anti-slip protrusions (16a), (16a), (16b), and (16b) are projected and processed toward the inner deep part of the dovetail mold. (H3) (H3) indicates the inward protruding height of the protrusions (16a) (16a) (16b) (16b), and the nodes (17) and ribs ( This is a dimension that substantially corresponds to the protruding height of 18).

  Each of the anti-slip protrusions (16a), (16a), (16b), and (16b) facing inward from both ends of the back surfaces (11a) and (11b) is provided on each elastic clip (C1) (C2). Each elastic clip along the axial direction of the reinforcing bar (X) (Y) is to be locked to the node (17) or the rib (18) of the reinforcing bar (X) (Y) received in the inner back. Sliding movement of C1) and C2 and swinging of the elastic clips C1 and C2 along the circumferential direction of the reinforcing bars X and Y can be prevented. Therefore, the anti-slip protrusions (16a), (16a), (16b), and (16b) have the same elastic clips (C1) as the rivets (15) pivotally attached to both elastic clips (C1) and (C2). ) (C2), it can be said that they are scattered on the longitudinal center line (OO) of the flat back surface (11a) (11b).

FIG. 5 schematically shows an example of reinforcing bar arrangement and a use state of a binding metal fitting, and FIG. 6 shows a cross shape of vertical bars (main bars) (Y) and horizontal bars (hoop bars) (X) from FIG. Is an enlarged view of a part orthogonal to the above, but when binding the crossing portions of the reinforcing bars (X) (Y) by using the binding metal fitting having the above-described configuration, the following work is performed. .

That is, the first and second elastic clips (C1) and (C2) of the bundling metal are forcibly and relatively rotated by the operator's operator, and are maintained in a cross shape that is orthogonal to each other in advance. Then, the operator moves the second elastic clip (C2) corresponding to the vertical line (Y) to the planned crossover position that maintains the required interval pitch of the vertical line (Y) that is arranged in advance. 7 and 9 is inserted and fixed by a tapping tool such as a hand or a hammer, and a large number of the binding metal fittings are attached in a state of being distributed to the vertical bars (Y).

Then, still to the first elastic clip of the other remaining in the open state (C1), which and in the same manner as the corresponding lateral stripes (X) above, insertion and fixed as 10 to 12, then the line is lateral stripes (X ) and if Haisuji perpendicular to each of the longitudinal muscle (Y) that precedes good results obtained rebar (X) (Y) cohesion states comrades as shown in FIG. 6, 12 that way.

However, one set of the first and second elastic clips (C1) and (C2) is kept in a pre-aligned parallel state, and the longitudinal reinforcement (Y) arranged in advance is moved to the planned crossover position. After inserting and fixing one corresponding second elastic clip (C2), the corresponding horizontal streak (X) is once inserted into the remaining first elastic clip (C1) and fixed in an almost parallel arrangement. Then, the transverse stripes (X) that follow thereafter may be forced to rotate all at once, thereby turning them into a state orthogonal to the preceding vertical stripes (Y). It is adopted such a method, since result obtained by bundling condition of the same cross section as FIG. 6, 12.

  Regardless of which of the above working methods is adopted, the elastic clips (C1) and (C2) are formed one by one from both ends of the flat back surfaces (11a) and (11b) that are shaped like dovetails. Since the non-slip protrusions (16a), (16a), (16b), and (16b) are projected toward the inner deep part of the dovetail mold, one of the first inserted and fixed to the preceding vertical line (Y) 2 There is no fear that the elastic clip (C2) slides along the axial direction of the vertical line (Y) or swings along the circumferential direction of the vertical line (Y). The other first elastic clip (C1) that receives (X) is positioned and fixed in a stable state that always indicates the normal direction.

In addition, when one set of the first and second elastic clips (C1) and (C2) receives an artificially forcible turning operation force, the pair of the first and second elastic clips (C1) and (C2) is finally fixed with the one rivet (15) as a pivot. Since it is maintained in a moderate cross-type tightening state, both elastic clips (C1) and (C2) of the bundling bracket are forcibly rotated so as to be used as a so-called X-shape that is not orthogonal to each other. Accordingly, the non-orthogonal portions of the reinforcing bars (X) and (Y) as shown in FIG. 13 can be bound, and the reinforcing bars (X) and (Y) can correspond to various crossing portions maintaining arbitrary crossing angles. Convenience and versatility.

5 to 13 , each elastic clip (C1) (C2) of the binding metal fitting has a substantially dovetail shape and has an opening width (W1) (W1) at the inner back thereof. ) Is narrower than the diameters (D1) and (D2) of the reinforcing bars (X) and (Y) to be applied in advance, and the opening widths (W2) and (W2) of the further inlet portion are the numerical values exemplified above. As is clear from FIG. 2, the dimension is narrowed with a large difference corresponding to about 5.5 times the constant thickness (T) of the metal plate material as compared with the opening width (W1) (W1) of the inner back. For this reason, the strong restoring elastic force accompanying the expansion from the inlet portion firmly and stably holds the outer peripheral surface of the corresponding reinforcing bar (X) (Y), from the reinforcing bar (X) (Y). Although there is no risk of falling off even when receiving external force, an inward reversing check nail (14a) ) (14a) (14b) (14b) also works effectively.

  Moreover, the pair of the first and second elastic clips (C1) and (C2) shaped in this way does not rotate freely in nature, but only when relative force is applied for the first time when a rotation force is applied. Because it is pivotally attached to the tightly tightened state that can move, even if a strong strain force is applied to the reinforcing bars (X) and (Y) from an oblique direction during use of the binding bracket, the strain force is reduced. It can be absorbed effectively with the necessary minimum amount, and there is no possibility that both elastic clips (C1) and (C2) will be illegally deformed or even decomposed or damaged.

Next, FIG. 14 shows a second embodiment of the present invention corresponding to FIG. 12 of the first embodiment, in which the arc side surfaces (12a) (12a) of the elastic clips (C1) (C2) are shown. (12b) While bending a pair of opposing reinforcing bar insertion guide pieces (13a), (13a), (13b), and (13b) from the leading ends of the bent portions of (12b) and (12b) to an outwardly spreading trumpet, a part of them is bent The insertion guide pieces (13a), (13a), (13b), and (13b) are used as check bars for reinforcing bars (14a), (14a), (14b), and (14b) one by one or two by two (two in the illustrated example). ) And the bent ridgelines (F2) and (F2) are extended inwardly and extended. Reference numerals (19a), (19a), (19b), and (19b) are punched windows that are preliminarily processed on both arc side surfaces (12a), (12a), (12b), and (12b).

That is, in the binding metal fitting of the second embodiment, the reinforcing bar check pawls (14a) (14a) (14b) (14b) are bent ridge lines (F2) of the insertion guide pieces (13a) (13a) (13b) (13b). ) Since it protrudes further inward than (F2), the opening width (W2) (W2) of the inlet portion secured between the two facing each other is narrower than that of the first embodiment. Compared to the opening width (W1) (W1) of the inner back portion, it is a narrow dimension with a large difference corresponding to about 5.5 times or more of the constant thickness (T) in the metal plate material. Since the other configurations in the second embodiment are substantially the same as those in the first embodiment, only the corresponding reference numerals to those in FIG. 12 are written in FIG. 14 , and the detailed description thereof is omitted.

  In the case of such a second embodiment, a stainless steel plate having a large thickness (T) or the like due to the difference in diameter (D2) (D1) between the vertical bars (Y) and the horizontal bars (X) to be applied. While using the metal plate material, the extraction windows (19a) (19a) (19b) processed into the circular arc side surfaces (12a) (12a) (12b) (12b) of the respective elastic clips (C1) (C2) (19b) has an advantage that the elastic pressure of the elastic clips (C1) and (C2) against the reinforcing bars (X) and (Y) can be adjusted appropriately.

In the binding bracket of the first embodiment described based on FIGS. 1 to 13 , one set of the first and second elastic clips (C1) and (C2) is connected to the central part of the flat back surface (11a) (11b). Although pivotally attached to the tightened state of the cross-type by a single rivet (15), as it is apparent from the third embodiment of the present invention shown in FIG. 15 and 16, the first and second elastic clips (C1 ) (at one end comrades set flat back surface of C2) (11a) (11b), also by one rivet (15) as well as pivotally connected to the clamping state of the L-shaped, its rivets (15 ) From the other end of the remaining portion other than the pivotally attached portion, a plurality (two in the illustrated example) of anti-slip protrusions (16a) (16a) (16b) (16b) You may project towards the part.

  Then, using such a binding metal fitting of the third embodiment, it is possible to bind the portions where the reinforcing bars (X) and (Y) cross into a right-angled L-shape or a non-right-angled V-shape. .

Also, as is apparent from the fourth embodiment of the present invention shown in FIGS. 17 to 19 , one set of the first and second elastic clips (C1) and (C2) is used in either one (first elastic clip). In the center part of the flat back surface (11a) and one end part of the flat back surface (11b) in the other side (second elastic clip), a single rivet (15) is used to form a T-shaped tightening state. It is also possible to pivot.

  In that case, the anti-slip protrusions (16a), (16a), (16b), and (16b), and the first elastic clip (C1), as in the first embodiment, the flat back surface ( 11a) from the remaining both ends excluding the pivot part, and the other second elastic clip (C2) is pivoted on the flat back surface (11b) as in the third embodiment. A plurality (two in the illustrated example) of the remaining other end portions excluding the portion may be projected toward the inner back of the dovetail mold.

  If it does so, the part which the said reinforcing bars (X) (Y) cross | intersect a right-angle T-shape or a non-right-angle pseudo-T-shape can be bundled using the binding metal fitting of 4th Embodiment.

In any of the first to fourth embodiments, as suggested from FIGS. 20 and 21 , the length of the metal plate material used as the first and second elastic clips (C1) and (C2) of the binding metal fitting ( L) can be made different in length, or the thickness (T) of the metal plate can be changed. Since other configurations in the third to fifth embodiment is substantially the same as the first embodiment, and kept to fill in the corresponding code in the FIG. 1 to 13 that figure 15-21, the details The detailed explanation is omitted.

It is a perspective view which shows 1st Embodiment of the binding metal fitting which concerns on this invention. It is a front view of FIG. FIG. 3 is a plan view of FIG. 2. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. It is a rear view which shows roughly the example of a reinforcing bar arrangement and the use condition of a binding metal fitting. FIG. 6 is an enlarged rear view in which a portion orthogonal to a reinforcing bar cross shape is extracted from FIG. 5. It is sectional drawing which shows the insertion process of the binding metal fitting with respect to a vertical bar. It is sectional drawing which shows the insertion fixing state of the binding metal fitting following FIG. FIG. 9 is a sectional view taken along line 9-9 in FIG. 8. It is sectional drawing corresponding to FIG. 7 which shows the insertion process of the horizontal stripe with respect to a binding metal fitting. It is the 11-11 line sectional view of FIG. It is sectional drawing which shows the state united in the cross shape of reinforcing bars. It is a rear view corresponding to FIG. 6 which shows the state bundled in the X shape of the reinforcing bars. It is sectional drawing corresponding to FIG. 12 which shows 2nd Embodiment of the binding metal fitting which concerns on this invention. It is a top view corresponding to FIG. 2 which shows 3rd Embodiment of the binding metal fitting which concerns on this invention. FIG. 16 is a cross-sectional view taken along line 16-16 in FIG. 15. It is a top view corresponding to FIG. 2 which shows 4th Embodiment of the binding metal fitting which concerns on this invention. FIG. 18 is a sectional view taken along line 18-18 in FIG. 17. It is sectional drawing which shows the use condition of 4th Embodiment. It is a side view which shows the deformation | transformation embodiment of the binding metal fittings which differ in length. It is a 21-21 line sectional view of Drawing 20. It is a front view corresponding to FIG. 2 which shows the conventional binding metal fitting. FIG. 23 is a plan view of FIG. 22. It is sectional drawing which shows the use condition of FIG.

Explanation of symbols

(11a) (11b) · Back surface (12a) (12a) (12b) (12b) · Arc side surface (13a) (13a) (13b) (13b) · Insertion guide piece (14a) (14a) (14b) (14b) · Check claw (15) · Rivet (16a) (16a) (16b) (16b) · Anti-slip convex (17) · Node (18) · Rib (19a) (19a) (19b) ( 19b) · Drain window (C1) (C2) · 1st and 2nd elastic clip (D1) (D2) · Diameter (L) · Length (T) · Thickness (X) · Transverse (Y) · Longitudinal (W1) ) (W2) ・ Opening width

Claims (5)

The opening width of the entrance part is bent from a single stainless steel plate, a hardened steel plate, or other metal plate material that can exhibit spring properties, and then bent into an outwardly expanded state from the flat back surface (11a) (11b). (W2) A substantially dovetail groove comprising a pair of symmetrically facing circular arc side surfaces (12a), (12a), (12b), and (12b) that divides the inner depth of an opening width (W1) (W1) wider than (W2). A set of first and second elastic clips (C1) and (C2) shaped into a mold,
The first elastic clip (C1) has a small dovetail shape substantially corresponding to the diameter (D1) of the transverse stripe (X), and the second elastic clip (C2) substantially corresponds to the diameter (D2) of the vertical stripe (Y). As a large dovetail mold, the size of the dovetail mold is different,
Both elastic clips (C1) and (C2) are relative to each other as long as no forcible rotational force is applied by a single rivet (15) caulked to the center of the flat back surfaces (11a) and (11b). While being pivotally attached to a cross-shaped tightening state that maintains the hardness that does not rotate,
The elastic clips (C1) and (C2) are scattered on the longitudinal center line (OO) of the flat back surface (11a) and (11b), and the corresponding reinforcing bars (X) and (Y) are distributed. The non-slip protrusions (16a) (16a) (16b) (16b) that can be locked to the nodes (17) and the ribs (18) one by one from both ends of the back surface (11a) (11b). While protruding toward the inner part of the groove type,
Similarly, the corresponding insertion guide pieces for reinforcing bars (13a) (13a), which continue from the bent leading ends of the circular arc side surfaces (12a) (12a) (12b) (12b) in each elastic clip (C1) (C2) ( 13a) (13b) (13b) by folding a pair of opposite sides into an outwardly spreading trumpet type,
Reinforcing bar check pawls (14a) (14a) (14b) (14b) in which the bent ridgelines (F2) (F2) of the insertion guide pieces (13a) (13a) (13b) (13b) are relatively inward. A narrow opening width (W2) with a large difference corresponding to about 5.5 times the constant thickness (T) of the metal plate material than the opening width (W1) (W1) of the dovetail-shaped inlet portion. ) (intersection binding metal rebar comrades, characterized in that kept W2). The opening width of the entrance part is bent from a single stainless steel plate, a hardened steel plate, or other metal plate material that can exhibit spring properties, and then bent into an outwardly expanded state from the flat back surface (11a) (11b). (W2) A substantially dovetail groove comprising a pair of symmetrically facing circular arc side surfaces (12a), (12a), (12b), and (12b) that divides the inner depth of an opening width (W1) (W1) wider than (W2). A set of first and second elastic clips (C1) and (C2) shaped into a mold,
The first elastic clip (C1) has a small dovetail shape substantially corresponding to the diameter (D1) of the transverse stripe (X), and the second elastic clip (C2) substantially corresponds to the diameter (D2) of the vertical stripe (Y). As a large dovetail mold, the size of the dovetail mold is different,
Both elastic clips (C1) and (C2) are relatively relative to each other as long as no forcible rotational force is applied by one rivet (15) caulked to one end of the flat back surface (11a) (11b). While being pivotally attached to the L-shaped tightening state that maintains the hardness that does not rotate,
The elastic clips (C1) and (C2) are scattered on the longitudinal center line (OO) of the flat back surface (11a) and (11b), and the corresponding reinforcing bars (X) and (Y) are distributed. A plurality of anti-slip protrusions (16a), (16a), (16b), and (16b) that can be locked to the nodes (17) and the ribs (18) are separated from the other end portions of the back surfaces (11a) and (11b). While protruding toward the inner part of the dovetail mold,
Similarly, the corresponding insertion guide pieces for reinforcing bars (13a) (13a), which continue from the bent leading ends of the circular arc side surfaces (12a) (12a) (12b) (12b) in each elastic clip (C1) (C2) ( 13a) (13b) (13b) by folding a pair of opposite sides into an outwardly spreading trumpet type,
Reinforcing bar check pawls (14a) (14a) (14b) (14b) in which the bent ridgelines (F2) (F2) of the insertion guide pieces (13a) (13a) (13b) (13b) are relatively inward. A narrow opening width (W2) with a large difference corresponding to about 5.5 times the constant thickness (T) of the metal plate material than the opening width (W1) (W1) of the dovetail-shaped inlet portion. ) (W2) to the intersection bundling fitting rebars comrades you characterized in that maintained. The opening width of the entrance part is bent from a single stainless steel plate, a hardened steel plate, or other metal plate material that can exhibit spring properties, and then bent into an outwardly expanded state from the flat back surface (11a) (11b). (W2) A substantially dovetail groove comprising a pair of symmetrically facing circular arc side surfaces (12a), (12a), (12b), and (12b) that divides the inner depth of an opening width (W1) (W1) wider than (W2). A set of first and second elastic clips (C1) and (C2) shaped into a mold,
The first elastic clip (C1) has a small dovetail shape substantially corresponding to the diameter (D1) of the transverse stripe (X), and the second elastic clip (C2) substantially corresponds to the diameter (D2) of the vertical stripe (Y). As a large dovetail mold, the size of the dovetail mold is different,
1 in which either one of the elastic clips (C1) and (C2) is crimped between the central portion of the flat back surface (11a) and one end portion of the flat back surface (11b) of the other. The rivet (15) of the book is pivotally attached to a T-shaped tightening state that maintains a hardness that does not rotate relative to each other unless a rotation forcing force is applied.
The elastic clips (C1) and (C2) are scattered on the longitudinal center line (OO) of the flat back surface (11a) and (11b), and the corresponding reinforcing bars (X) and (Y) are distributed. Non-slip protrusions (16a) (16a) (16b) (16b) that can be locked to the nodes (17) and the ribs (18) are connected to both end portions of the back surface (11a) in one elastic clip (C1). From the other end of the back surface (11b) of the other elastic clip (C2) as a plurality, each projecting toward the inner back of the dovetail mold,
Similarly, the corresponding insertion guide pieces for reinforcing bars (13a) (13a), which continue from the bent leading ends of the circular arc side surfaces (12a) (12a) (12b) (12b) in each elastic clip (C1) (C2) ( 13a) (13b) (13b) by folding a pair of opposite sides into an outwardly spreading trumpet type,
Reinforcing bar check pawls (14a) (14a) (14b) (14b) in which the bent ridgelines (F2) (F2) of the insertion guide pieces (13a) (13a) (13b) (13b) are relatively inward. A narrow opening width (W2) with a large difference corresponding to about 5.5 times the constant thickness (T) of the metal plate material than the opening width (W1) (W1) of the dovetail-shaped inlet portion. ) (W2) to the intersection bundling fitting rebars comrades you characterized in that maintained. A part of the opposing reinforcing bar insertion guide pieces (13a), (13a), (13b), and (13b) in each elastic clip (C1) and (C2) is extended and extended inward from the bent ridge lines (F2) and (F2). The cross-section binding metal fittings for reinforcing bars according to claim 1, 2 or 3, wherein the reinforcing bars are cut and raised as one or more reinforcing claws (14a) (14a) (14b) (14b). . 4. The cross section binding metal fittings for reinforcing bars according to claim 1 , wherein lengths (L) of the first and second elastic clips (C1) and (C2) are made different from each other .

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