JP2017002510A - Connector for rod-like member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector for a rod-like member for use as means for tightly coupling a reinforcing bar and a separator for concrete form assembly to each other.SOLUTION: A pair of longitudinally long holding members 1 and 2 in a cross-sectionally inward channel shape which have longitudinally long back parts 5a and 6a and both-side plate parts 5b and 6b are each freely opened and closed on a fulcrum part 3 at one end, and when both the longitudinally long holding members 1 and 2 are closed, one end-side regions including at least the fulcrum part 3 are fitted to each other, the fulcrum part 3 consists of a V-shaped cut recessed part 7 formed at an inner side nearby a lower end of the both-side plate part 6b of the longitudinal long holding member 2 on an outer side, and a projection piece 8 projected laterally outward from a lower end of the both-side plate part 5b of the longitudinally long holding member 1 on an inner side to be fitted in the cut recessed part 7 to abut, and a bolt 4 closing both the longitudinally long holding members 1 and 2 is provided at a position between bent inner sides 12a-13b, holding a reinforcing bar, of both the longitudinally long holding members 1 and 2 and the fulcrum part 3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a connecting member for rod-shaped members, which can be used as a means for connecting a reinforcing bar and a separator for assembling concrete formwork thinner than the reinforcing bar in a parallel state adjacent to each other or in an orthogonal state orthogonal to each other. It is.

  When building a reinforced concrete structure, it may be necessary to fix the inner end of the separator for positioning the concrete form plate to the reinforcing bar. As a connector that can be used in such a case, the inner end of the separator is welded to the surface of the connector that is fastened to the reinforcing bar, or the connector itself that is fastened to the reinforcing bar is connected to the reinforcing bar. A product having a function for fastening and fixing the inner end portion to the reinforcing bar has been put into practical use. For example, the one described in Patent Document 1 includes a pair of vertically long holding members that are connected to each other via a hinge plate portion so as to be openable and closable and can be fitted to each other when closed. The two are fastened so that they are brought close to each other by bolts on the side opposite to one end of the hinge plate (the free end).

Japanese Patent No. 5,178,943

  In the configuration of the conventional connector described in Patent Document 1, since the pair of vertically sandwiching members are integrally formed by the plate portion that forms the hinge portion, a separate shaft is used. Compared to a configuration in which a pair of vertically long holding members are pivotally coupled so as to be openable and closable, the number of parts is reduced, but there is a restriction that it must be molded with a relatively thin plate material that can be a hinge portion, Manufactured with sufficient plate material, the strength cannot be significantly increased. In addition, since the bolt is configured to close between the free ends of the pair of vertically long holding members, the bolt must be completely detached from one of the vertically long holding members to open between the free ends of the pair of vertically long holding members. In this case, the reinforcing bars cannot be sandwiched between the pair of vertically long holding members. Therefore, it takes time and effort to attach the coupler to the reinforcing bar.

The present invention proposes a connecting member for a rod-shaped member that can solve the conventional problems as described above, and the connecting member for a rod-shaped member according to the present invention has a relationship with embodiments described later. For ease of understanding, the reference numerals used in the description of the embodiment are shown in parentheses, and a pair of vertically sandwiching members (1, 2) and two vertically sandwiching members (1, 2) that are parallel to each other are shown. ) And an open / close fulcrum (3) provided on one end side of the two) and a bolt (4) for closing and fastening the two vertically long holding members (1, 2) to each other. In the connecting member of the rod-shaped member provided with the bent inner sides (12a to 13b) for pinching and fixing the rod-shaped member (rebar (T)) located between the two vertically long sandwiching members (1, 2) during the closing movement ,
The two vertically sandwiching members (1, 2) are composed of a vertically long back plate portion (5a, 6a) and both side plate portions (5b, 6b) connected inward from both sides of the back plate portion (5a, 6a). ) And an inner vertically long sandwiching member (1) having a narrow width between the two side plate portions (5b) in at least one end side region having the fulcrum portion (3), At least one outer side of the one end side region having the fulcrum portion (3) is wide, and the one end side region is fitted to the one end side region of the inner longitudinal holding member (1). The fulcrum part (3) is divided into a holding member (2), and the fulcrum part (3) is a V-shaped notch recess (7) formed on the inner side near the lower end of both side plate parts (6b) of the outer vertically long holding member (2). ) And a projecting piece (8) that protrudes laterally outward from the lower end of both side plate portions (5b) of the inner vertically long clamping member (1) and fits into and comes into contact with the notch recess (7). The bolt (4) is configured in front of both the inner and outer vertically sandwiching members (1, 2). Have become arranged structure at a position between the bent inner sides and (12A～13b) and the fulcrum (3).

  According to the configuration of the present invention described above, the inner vertically elongated holding member and the outer vertically elongated holding member are not integrally connected via the hinge plate portion that constitutes the fulcrum portion as in the conventional product, but a metal Since it can be manufactured individually by pressing the plate, not only can the die for pressing be small, but also a plate with a plate thickness that can be used for hinge action is unnecessary. The thickness of the metal plate can be increased to increase the strength. Further, the fulcrum portion can be reduced in cost by reducing the number of parts and the number of assembling steps as compared with the configuration in which the end portions of both vertically long holding members are pivotally supported. In addition, when the rod-like member is fitted between the inner and outer vertically sandwiching members, it is not necessary to remove the bolt from one of the vertically sandwiching members as in the conventional product, and the bolt is loosened and only the inside and outside vertically sandwiching members are opened. Since it is good, workability is also greatly improved.

  Basically, the inner end of the separator can be fixed by welding to the surface of either of the inner and outer vertically sandwiching members of the coupler fastened to the reinforcing bar, but both the inside and outside vertically sandwiching members (1, 2 ) On the back plate part (5a, 6a) on the side where the fulcrum part (3) is located with respect to the first rod-shaped member (rebar (T)) sandwiched between the bent inner sides (12a-13b) Provided with through holes (16, 17) for penetrating the second rod-shaped member (separator (S)) in an orthogonal direction in the adjacent state, the inner and outer vertical sandwiching members (1, 2) are connected to the bolt (4) Thus, the first rod-shaped member (rebar (T)) and the second rod-shaped member (separator (S)) can be configured to be pressure-bonded and fixed in an orthogonal direction.

  In addition, on the bent inner side of both the inner and outer vertically sandwiching members (1, 2), the free end portion on the opposite side to the one end portion having the fulcrum portion (3) of these inner and outer vertically sandwiching members (1, 2) is provided. The holding main hypotenuses (12a, 13a) that incline so as to approach each other as they approach each other, and continue to the holding main hypotenuses (12a, 13a) and come closer to one end with the fulcrum (3). The auxiliary hypotenuses (12b, 13b) that incline so as to approach each other are provided, and adjacent to each other at two places between the main hypotenuses (12a, 13a) for holding and the sub hypotenuses (12b, 13b) for holding The two rod-shaped members (rebar (T) between the main slant sides (12a, 13a) for clamping) and the separator (S) between the sub slant sides (12b, 13b) for clamping can be fixed to each other. You can also Of course, in combination with the configuration described in the previous paragraph, it is desirable to configure so that the direction of the separator to be fastened to the reinforcing bar can be selected.

  When the configuration described in the previous paragraph is adopted, it is formed on both side plates (5b) of the inner vertically long clamping member (1) on the bent inner sides (12a, 12b) of the both side plates (5b). A linear recess (14) is formed for displacing the holding sub oblique side portion (12b) inwardly toward each other, and both side plates (6b) of the outer vertical holding member (2) are provided on both sides thereof. Forming a linear projecting portion (15) for displacing the holding sub oblique side portion (13b) formed on the bent inner side (13a, 13b) of the plate portion (6b) outwardly away from each other; I can do it. According to this configuration, the holding sub oblique side portion of the inner vertically long holding member that holds the separator and the holding sub oblique side portion of the outer vertically holding member that holds the separator are greatly separated in the length direction of the separator. become. Therefore, when the separator is sandwiched between the inner and outer vertically sandwiching members, a bending force can be applied without applying a shearing force to the separator at two sandwiching locations separated in the length direction of the separator. Therefore, the separator tends to be bent partially, and the anti-slip effect is increased.

1A is a front view of the entire connector, FIG. 1B is a longitudinal front view of the entire connector, and FIG. 1C is a sectional view taken along line XX of FIG. 1A. 2A is a plan view of the inner vertically elongated holding member, FIG. 2B is a front view of the inner vertically elongated holding member, FIG. 2C is a right side view of the inner vertically elongated holding member, and FIG. 2D is a sectional view taken along line YY in FIG. It is. 3A is a plan view of the outer vertical holding member, FIG. 3B is a front view of the outer vertical holding member, FIG. 3C is a left side view of the outer vertical holding member, and FIG. 3D is a sectional view taken along the line ZZ in FIG. 3B. It is. 4A to 4D are partially longitudinal front views showing different usage states of the couplers.

  1 to 3, reference numeral 1 denotes an inner vertical holding member, 2 denotes an outer vertical holding member, 3 denotes a fulcrum formed between one end portions of both the inner and outer vertical holding members, and 4 denotes an inner and outer vertical holding member 1, This is a bolt for closing and fastening 2. The inner and outer vertically sandwiching members 1 and 2 are each composed of a vertically long back plate portion 5a, 6a and both side plate portions 5b, 6b connected inward from both sides of the back plate portions 5a, 6a. Inwardly U-shaped, and at the free end opposite to the side where the fulcrum 3 is located, the back plate portions 5a, 6a are bent inwardly, between the side plate portions 5b and between the side plate portions 6b. Is closed. Further, the inner vertically long holding member 1 has a narrow width between both side plate portions 5b, and the outer vertically long holding member 2 has a wide width between both side plate portions 6b so that the inner vertically long holding member 1 can be fitted inside. It has become.

  The inner and outer vertically sandwiching members 1 and 2 are provided with bent portions 1a and 2a that are bent symmetrically so that the intermediate portions are separated from each other, and columnar portions 1b and 2b from the bent portions 1a and 2a to the lower end. Compared with the upper half of the bent portions 1a and 2a, the thickness of the columnar portions 1b and 2b (height of the side plate portions 5b and 6b with respect to the back plate portions 5a and 6a) is increased, The lower half portions of the bent portions 1a and 2a are gradually increased in thickness to the thickness of the columnar portions 1b and 2b.

  The fulcrum part 3 includes a pair of outwardly extending V-shaped notch recesses 7 formed in the inner side near the lower ends of the both side plate parts 6b of the outer vertical holding member 2, and both side plate parts 5b of the inner vertical holding member 1. And a pair of projecting pieces 8 that are bent laterally outward from the lower end of the pair, and the pair of projecting pieces 8 includes a front edge portion 8a that fits and contacts the deepest portion of the pair of cutout recesses 7; A protruding portion 8b that protrudes forward on the outer side and sandwiches both side plate portions 6b of the outer vertically long holding member 2 from the outside is formed. With the above configuration, the length of the columnar portion 2b of the outer vertically sandwiching member 2 is longer than the length of the columnar portion 1b of the inner vertically sandwiching member 1. Further, when the pair of projecting pieces 8 are fitted and brought into contact with the pair of notch recesses 7 of the fulcrum part 3, the columnar part 1b of the inner vertically long clamping member 1 and a part of the bent part 1a connected to the upper side thereof are The columnar part 2b of the outer vertically long clamping member 2 and the bent part 2a connected to the upper side are fitted inside.

  In the outer vertically sandwiching member 2, a bent portion 9 is formed on the back plate portion 6a of the columnar portion 2b so as to project outward in an arc shape with respect to the length direction of the outer vertically sandwiching member 2. The portion 9 is provided with a vertically long through-hole 10 for inserting a bolt, which is long in the length direction of the outer vertically long pinching member 2. The inner vertically long holding member 1 has a through screw hole 11 for threading through a bolt, in which a back screw portion 5a of the columnar portion 1b is subjected to female screw processing on a through hole formed by burring projecting outward. Is provided. Thus, the bolt 4 is inserted from the vertically long through hole 10 toward the through screw hole 11 and screwed into the through screw hole 11, and the head 4 a is connected to the back of the outer vertically long holding member 2. It is made to adjoin to the outer side surface of the plate part 6a, specifically, the outer side surface of the said bending part 9. FIG.

  With the above configuration, when the bolt 4 is rotated in the screwing direction, the outer vertical holding member 2 is pushed toward the inner vertical holding member 1 by the head 4 a of the bolt 4. Both the vertically long holding members 1 and 2 are in contact with each other at the fulcrum portion 3 (the deepest portions of the pair of cutout recesses 7 are in contact with the front edge portions 8a of the pair of protruding pieces 8 of the inner vertically long holding member 1). Therefore, the inner vertically sandwiching member 1 and the outer vertically sandwiching member 2 move close to each other around the contact point at the fulcrum portion 3 to force between the bent portions 1a and 2a of the inner and outer vertically sandwiching members 1 and 2a. Will be closed. On the contrary, the bolt 4 is operated to rotate backward in the screw unwinding direction, and the bolt 4 is moved out of the through screw hole 11 so that the outer surface of the projecting portion 9 abuts against the head 4 a of the bolt 4. To the position, the inner vertical holding member 1 and the outer vertical holding member 2 are manually moved around the contact point at the fulcrum 3 to open between the bent portions 1a, 2a of the inner and outer vertical holding members 1, 2. I can do it.

  The bent portions 1a and 2a of the inner and outer vertically sandwiching members 1 and 2 have inner sides (inner sides of the side plate portions 5b and 6b) inclined in directions closer to the free end side of the upper half of each of the bent portions 1a and 2a. As shown in D, a pair of holding main oblique sides 12a and 13a for holding and fastening the reinforcing bars T are provided, and the lower half of the bent portions 1a and 2a are closer to each other toward the fulcrum portion 3 side. As shown in FIGS. 4A and 4B, the inner side inclined in the direction to be held (the inner side of both side plate portions 5b and 6b) sandwiches and fastens the separator S adjacent in parallel to the reinforcing bar T inside the reinforcing bar T. These are a pair of holding sub oblique sides 12b and 13b. Then, as shown in FIG. 1C, the pair of sandwiching sub oblique sides 12 b are brought close to each other on the inner sides of the both side plate portions 5 b forming the pair of sandwiching subsidiary oblique sides 12 b of the inner vertically long holding member 1. In order to be displaced inwardly, a linear recess 14 is formed, and on each of the inner sides of the side plate portions 6b forming the pair of sandwiching sub oblique sides 13b of the outer vertically long sandwiching member 2, the pair of sandwiching subs In order to displace the oblique side portion 13b outwardly away from each other, a linear protruding portion 15 is formed. Therefore, when the separator S is sandwiched between the pair of sandwiching sub oblique sides 12b and 13b of the bent portions 1a and 2a of the both inner and outer vertically sandwiching members 1 and 2, the separator S and the inside vertically sandwiching member 1 A pair of pressing sub oblique sides 12b (inner sides of the linear recessed portion 14) and a pair of holding sub oblique sides 13b (inside the linear protrusions 15) of the separator S and the outer vertically long holding member 2 The portions that are in pressure contact with the side are separated from each other in the length direction of the separator S.

  Further, the back plate portions 5a and 6a in the lower half of the bent portions 1a and 2a of the inner and outer vertically sandwiching members 1 and 2 are arranged in a direction perpendicular to the reinforcing bars T as shown in FIGS. Through holes 16 and 17 through which the separator S is inserted are formed so as to be adjacent to the side where the fulcrum part 3 is located with respect to the reinforcing bar T. As shown in FIG. 1B, the through-hole 17 on the outer vertical pinching member 2 side is arranged so as to approach the free end side of the bent portions 1a and 2a with respect to the through-hole 16 on the inner vertical pinching member 1 side. As shown in FIGS. 4C and D, the separator S that is inserted through both the through holes 16 and 17 is not parallel to the bolt 4 but is inclined obliquely. Each of the through holes 16 and 17 has a diameter sufficiently larger than the diameter of the separator S, and each of the through holes 16 and 17 has a dent that is smaller than the diameter of the separator S at the lower side. The parts 16a and 17a are formed, and the peripheral surface of the separator S pressed by the reinforcing bar T to the side where the fulcrum part 3 is present is configured to bite into both shoulder angles of the recessed parts 16a and 17a to prevent slippage.

  As shown in FIGS. 4A and 4B, when the separator S is fastened and fixed to the reinforcing bar T so as to be parallel to the reinforcing bar T, the bolt 4 is loosened and the inner and outer vertically sandwiching members 1 and 2 are bent. The bent portions 1a and 2a of the inner and outer vertically sandwiching members 1 and 2 are fitted onto the reinforcing bar T in a state where the portions 1a and 2a are opened. Thereafter, the bolt 4 is tightened so that the rebar T does not relatively disengage from between the inner and outer vertically sandwiching members 1 and 2, and between the free ends of the bent portions 1 a and 2 a of the inner and outer vertically sandwiching members 1 and 2. Narrow. In this state, when the separator S is fastened along the rebar T in parallel, the separator S is inserted into the triangular space on the side where the fulcrum part 3 of the rebar T is present, as shown in FIGS. In the state, tighten the bolt 4. As a result, the holding main oblique sides 12a and 13a in the bent portions 1a and 2a of the both inner and outer vertically sandwiching members 1 and 2 move the sandwiched reinforcing bar T to the side where the fulcrum part 3 is located. When the separator S on the moving direction side is pushed in the same direction and is pushed between the auxiliary hypotenuse sides 12b and 13b, and when the reinforcing bar T and the separator S cannot move to the side where the fulcrum part 3 is located, Fastening and fixing of the separator S to the reinforcing bar T is completed. There are various thicknesses of the reinforcing bar T. As shown in FIGS. 4A and 4B, the thickness of the reinforcing bar T is different only in the closing amount of the inner and outer vertically sandwiching members 1 and 2, and the reinforcing bar T and the separator S There is no change in the action of fastening and fixing the two in parallel with each other.

  In the above method of use, as described above, the pressing contact portion between the holding sub oblique sides 12b and 13b and the separator S in the bent portions 1a and 2a of the inner and outer vertically long holding members 1 and 2 is the linear recessed portion 14. Because of the presence of the linear protrusions 15, the separators S are separated from each other in the length direction of the separator S. Therefore, a bending force is applied to the separators S rather than a shearing force, and the anti-slip effect is enhanced. ing.

  4C and 4D, when the separator S is fastened and fixed to the reinforcing bar T in a direction orthogonal to the reinforcing bar T, the bent portions 1a of the inner and outer vertically sandwiching members 1 and 2 as described above. , 2a, in a temporarily fixed state in which the reinforcing bar T is fitted, the separator S is inserted from one of the through holes 16 and 17 of the inner and outer vertically sandwiching members 1 and 2 into the other, and then the bolt 4 is tightened. The inner and outer vertically sandwiching members 1 and 2 are closed. Also in this case, the rebar T is pushed and moved to the side where the fulcrum part 3 is located by the action of the holding main oblique sides 12a and 13a in the bent parts 1a and 2a of the both inner and outer vertically holding members 1 and 2 in the same manner as described above. As a result, the reinforcing bar T presses the separator S toward the side where the fulcrum part 3 is present at the two intermediate portions supported by the through holes 16 and 17. As a result, when the separator S is pressed and fixed to the lower sides of the through-holes 16 and 17, specifically, the shoulder angles of the recesses 16a and 17a, the fastening and fixing of the separator S to the reinforcing bar T is completed. Also in this method of use, as shown in FIGS. 4C and 4D, even if the thickness of the reinforcing bar T is different, only the closing amount of the inner and outer vertically sandwiching members 1 and 2 is different depending on the thickness of the reinforcing bar T. The separator S can be fastened and fixed to the reinforcing bar T in an orthogonal state without any problem.

  Of course, in both of the above two methods of use, both the inner and outer longitudinally sandwiching members 1 and 2 are provided so that the reinforcing bar T and the separator S can be fastened and fixed to each other as expected even if the thickness of the reinforcing bar T is different. The reinforcing bars T that are clamped and fastened between the clamping main oblique sides 12a and 13a in the bent portions 1a and 2a are always in contact with a total of three places of the clamping main oblique sides 12a and 13a and the separator S. As described above, the end regions on the side of the holding main oblique sides 12a and 13a of the holding auxiliary oblique sides 12b and 13b in the bent portions 1a and 2a are configured to spread outward so as not to contact the reinforcing bar T. I can leave.

  It should be noted that the lower end portions of the inner and outer vertically sandwiching members 1 and 2, that is, the lower end portions of the columnar portions 1 b and 2 b, are continuously bulged outwardly from the back plate portions 5 a and 6 a to both side plate portions 5 b and 6 b. Ribs 18 and 19 are formed, and the lower end portions of the columnar portions 1b and 2b are bent and deformed outward by the reaction force acting on the fulcrum portion 3 when the inner and outer vertically sandwiching members 1 and 2 are closed and fastened together by the bolts 4. Is prevented from receiving.

  The rod-shaped member connector according to the present invention can be used as a means for firmly bonding a reinforcing bar and a concrete formwork assembling separator to each other at a construction site where a reinforced concrete building is constructed.

DESCRIPTION OF SYMBOLS 1 Inner vertical clamping member 1a, 2a Bending part 1b, 2b Column-shaped part 2 Outer vertical clamping member 3 Supporting point part 4 Bolt 5a, 6a Back board part 5b, 6b Both side board part 7 A pair of notch recessed part 8 A pair of protrusion piece 8a Front Edge portion 8b Protruding portion 9 Bending portion 10 Longitudinal through hole 11 Through screw hole 12a, 13a Holding main oblique side portion 12b, 13b Holding auxiliary oblique side portion 14 Linear recessed portion 15 Linear protruding portion 16, 17 For inserting the separator Through hole 16a, 17a Recessed part T Rebar S Separator

Claims (4)

It consists of a pair of vertically sandwiched members that are parallel to each other, an opening / closing fulcrum provided on one end of both vertically sandwiched members, and a bolt that fastens and closes both vertically sandwiched members. In the connecting member of the rod-shaped member provided with a bent inner side that clamps and fixes the rod-shaped member positioned between the two vertically long clamping members when moving,
The both vertically long holding members are formed in an inward U-shaped cross section having a vertically long back plate portion and both side plate portions connected inward from both sides of the back plate portion, and at least the fulcrum portion. An inner vertically long holding member having a narrow width between the both side plate portions in one end side region having a wide width between the two side plate portions in at least one end side region having the fulcrum portion, and the one end side region is the inner vertically long member Divided into an outer vertical holding member that fits into one end region of the holding member, and the fulcrum portion is a V-shaped cutout recess formed on the inner side near the lower ends of both side plate portions of the outer vertical holding member; A projecting piece projecting laterally outward from the lower end of the both side plate portions of the inner vertically sandwiching member and fitted into and abutting in the notch recess, and the bolt is bent of the both inside and outside vertically sandwiching members. A bar arranged at a position between the inner side and the fulcrum part Connector member.   The back plate portion of both the inner and outer vertically sandwiching members penetrates the second rod member in a perpendicular direction in a state adjacent to the side where the fulcrum portion is located with respect to the first rod member sandwiched between the bent inner sides. A through-hole for insertion is provided, and when the both vertically sandwiching members are closed and fastened to each other by the bolt, the first rod-shaped member and the second rod-shaped member are configured to be press-fixed to each other. The rod-shaped member connector according to claim 1.   The main slant side portion for clamping which is inclined so as to approach each other toward the free end portion on the opposite side to the one end portion having the fulcrum portion of the inner and outer vertically sandwiched members on the bent inner sides of the inner and outer vertically sandwiched members, Further, there is provided a holding sub oblique side portion that is continuous with the holding main oblique side portion and is inclined so as to approach each other as it approaches the one end portion with the fulcrum portion, and between the holding main oblique side portion and the holding auxiliary oblique side portion 3. The bar-shaped member coupling device according to claim 1, wherein the two bar-shaped members adjacent to each other are fastened and fixed at the two locations. Both side plate portions of the inner vertically long clamping member are formed with linear recessed portions for displacing the holding sub oblique sides formed on the bent inner sides of the both side plate portions inwardly approaching each other. On both side plates of the vertically long holding member, linear protrusions are formed for displacing the holding sub oblique sides formed on the bent inner sides of the both side plates to the outer sides apart from each other. The rod-shaped member connector according to claim 3.

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