JP2004285645A - Connector of form and separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To heighten the safety of a connector fitted to a concrete form to be used in order to connect the concrete form and a separator. <P>SOLUTION: This connector of the form and the separator is composed of a square tube body 1 and a form fastening bolt 2 fitted to a bolt mounting part 7 of a body rear wall part 6. A body front wall part 4 is provided with a separator connecting part 5. The separator connecting part 5 is composed of a separator fitting recessed part 14 formed to be cut out downward from the upper side of the front wall part 4 and a locking part 15 acting on the separator 27. The bolt mounting part 7 includes: a bolt fitting hole 19 formed to be cut out sideways extending from the body side wall part 8a to the rear wall part 6; and a bolt locking means 20. The bolt locking means 20 locks the form fastening bolt 2 with the head part 9 positioned in a position adjacent to the body rear wall part 6, and stops the bolt 2 from coming off the bolt fitting hole 19. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
[Industrial applications]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting tool that is attached to a concrete form and a separator to connect the concrete form and the separator.
[0002]
[Prior art]
This type of connector is mainly used when a separator must be erected after arranging reinforcing bars in a concrete casting space formed by a formwork. A connector main body is attached at a position, and after arranging a bar, the end (head) of the separator is engaged with the connector main body. Forming fastening bolts are protruded from the connector main body. You need to keep it. Thus, as described in Patent Document 1, in a configuration in which a mold fastening bolt is protruded by screwing the mold fastening bolt into a screw hole provided in a rear wall portion of the connector body. In addition, screw holes need to be formed in the main body, which not only leads to an increase in cost, but also requires time and labor for assembly. Therefore, as described in Patent Literature 2, a bolt mounting portion including a bolt fitting recess and a retaining portion for a bolt fitted is provided on a rear wall portion of the main body, and the bolt is inserted into the bolt fitting recess. There has been proposed a device that can be assembled to the main body by simply pushing it in. However, in the configuration described in Patent Literature 2, both the bolt fitting concave portion and the separator fitting concave portion provided in the main body are opened upward. It was.
[0003]
[0004]
[Patent Document 1]
Japanese Patent No. 3083129 [Patent Document 2]
Japanese Utility Model Publication No. 6-37165
[Problems to be solved by the invention]
In the conventional configuration as described above, if the retaining action of the retaining action part of the upwardly acting bolt for the formwork fastening to the main body is not strong, the side of the formwork when pushing the separator from above into the separator fitting recess is required. There is a risk that the main body may fall off the bolts fastened to the bolts. On the other hand, if the retaining effect of the retaining portion of the form-locking bolt upwardly with respect to the main body is made stronger, the assembling work of the bolt becomes difficult.
[0006]
[Means for Solving the Problems]
An object of the present invention is to provide a connecting tool between a mold and a separator that can solve the conventional problems as described above, and the means are denoted by reference numerals in the embodiments described later. As shown, the main body 1 comprises a rectangular tubular main body 1 penetrating in the vertical direction, and a form-fastening bolt 2 mounted on a bolt mounting portion 7 provided on a rear wall 6 of the main body 1. The wall portion 4 is a connector for connecting a mold and a separator provided with a separator connecting portion 5, wherein the separator connecting portion 5 is formed by cutting a notch downward from an upper side of the front wall portion 4. A mating recess 14 and a retaining portion 15 whose head 28 fits into the main body 1 and whose shaft 27b acts on the separator 27 fitted into the separator fitting recess 14; Part 7 is the book 1 is provided with a bolt fitting hole 19 and a bolt locking means 20 which are cut out laterally from one of the left and right side walls 8a, 8b to the rear wall 6, and the bolt locking means 20 is provided with the bolt fitting. The head 9 fits into the main body 1 through the hole 19 so that it cannot rotate, and the shaft portion 11 projects the form-locking bolt 2 protruding from the rear wall portion 6 of the main body. It is configured to be locked at a position adjacent to the wall portion 6 and to prevent the bolt 2 from coming out of the bolt fitting hole 19.
[0007]
In practicing the present invention having the above-described configuration, the bolt fitting hole 19 of the bolt mounting portion 7 has a bolt head fitting portion 21 provided at a position away from the main body rear wall portion 6 of the main body side wall portion 8a. An L-shaped bolt shaft portion fitting portion 22 provided in an L-shape from the bolt head fitting portion 21 to the center position of the main body rear wall portion 6, and the bolt locking means 20 is provided with the bolt head fitting portion. A tongue piece 23 in a U-shaped notch 23a formed on a side wall portion 8b opposite to the main body side wall portion 8a provided with 21 is fitted into the main body 1 to be adjacent to the main body rear wall portion 6. The head 9 of the form-fastening bolt 2 can be configured to be sandwiched between the tongue 23 and the rear wall 6 of the main body by bending the tongue 23 into the main body 1.
[0008]
The head 9 of the form-fastening bolt 2 may be substantially square, with one side slightly smaller than the interval between the left and right side walls 8a, 8b of the main body 1.
[0009]
Further, the main body 1 is formed by bending a single band-like body so that the front wall portion 4 is formed by both end portions 13a and 13b overlapping each other, and the separator fitting concave portion 14 of the separator connecting portion 5 is formed. Is composed of two notch recesses 16a, 16b formed at both ends 13a, 13b of the band-shaped body overlapping each other on the front wall portion 4. The retaining action portion 15 of the separator connecting portion 5 is It can be constituted by a projecting portion 17 formed on the inner side of at least one of the notch concave portions 16a and 16b.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 to 4, reference numeral 1 denotes a rectangular cylindrical main body that penetrates in a vertical direction, 2 denotes a bolt for fastening a form, and 3 denotes a fastening for the form. It is a plastic cone assembled to the bolt 2 for use. The main body 1 is provided with a separator connecting portion 5 on a front wall portion 4 and a bolt mounting portion 7 on which the formwork fastening bolt 2 is mounted on a rear wall portion 6.
[0011]
The formwork fastening bolt 2 includes a substantially square head 9 having a side slightly smaller than the interval between the left and right side walls 8a and 8b of the rectangular tubular main body 1, a tip screw shaft part 10, a head 9 and a tip. The cone 3 includes a groove 12 for cutting formed at a position close to the head 9 at the shaft 11 between the screw shaft 10 and the cone 3 with the temporary deformation of the shaft hole 3a. Pressure is applied at an intermediate position between the tip screw shaft portion 10 of the formwork fastening bolt 2 and the annular protrusion 12 a formed on the side of the breaking groove 12 so that the small diameter side is located on the head 9 side. Inserted and assembled. Therefore, the cone 3 is held by the shaft portion 11 so as to be freely movable between the tip screw shaft portion 10 of the mold fastening bolt 2 and the concave groove 12.
[0012]
The rectangular tubular main body 1 is formed by bending a single band-like body (iron plate or the like) so that the front wall portion 4 is formed at both end portions 13a and 13b overlapping each other. Thus, the separator connecting portion 5 provided on the front wall portion 4 is composed of a separator fitting concave portion 14 formed by notching downward from the upper side of the front wall portion 4 and a separator retaining action portion 15. I have. The separator fitting recess 14 is composed of two notch recesses 16a and 16b formed so as to overlap each other at both ends 13a and 13b of the band-like body forming the front wall 4, as shown in FIG. On the inner side of one notch recess 16a, a projection 17 constituting the retaining action portion 15 is formed at an intermediate height position, and the inner side above the projection 17 and the other side facing the other side. And the inner side of the notch recessed portion 16b forms upwardly inclined inclined guide surfaces 18a, 18b for pushing the ends 13a, 13b against elasticity by pushing the separator.
[0013]
The bolt mounting portion 7 has a bolt fitting hole 19 and a bolt locking means 20 which are formed by cutting out one of the left and right side walls 8 a and 8 b of the main body 1, that is, from the side wall 8 a to the rear wall 6. And The bolt fitting hole 19 is provided with a bolt head fitting portion 21 provided at a position away from the main body rear wall portion 6 of the main body side wall portion 8a, and a central position of the main body rear wall portion 6 from the bolt head fitting portion 21. A bolt shaft fitting portion 22 having a small width provided in an L-shape, and the bolt locking means 20 is provided with a side wall portion opposite to the main body side wall portion 8a provided with the bolt head fitting portion 21. 8b is formed by a tongue piece 23 in an inverted U-shaped (gate-shaped) cutout 23a.
[0014]
When assembling the form-fastening bolt 2 to the main body 1, the head 9 of the bolt 2 is fitted into the bolt head fitting portion 21 of the main body side wall portion 8 a, and at the same time, the shaft portion 11 is connected to the bolt shaft fitting portion 22. The head 9 is rotated between the side wall portions 8a and 8b in the main body 1 so that the shaft portion 11 is pulled out in the axial direction in a state where the head portion 9 is completely accommodated in the main body 1. Fit impossible. In this state, as shown in FIGS. 2 and 3, the tongue piece 23 in the cut 23 a of the main body side wall 8 b is bent inward at a substantially right angle, and the bent tongue piece 23 is attached to the end face of the bolt head 9. Be adjacent. As a result, the bolt head 9 is sandwiched between the bent tongue piece 23 and the rear wall portion 6 of the main body, and is held by the main body 1 in a state where it cannot move in the axial direction. Therefore, naturally, the bolt head 9 cannot be moved in the axial direction into the bolt head fitting portion 21 of the main body side wall 8a, and the form-fastening bolt 2 is prevented from falling off with respect to the main body 1.
[0015]
A description will be given of a method of using the connecting tool having the above configuration by taking as an example the connection of one end of a separator to a formwork arranged on one side of a concrete casting space. As shown in FIG. A through hole 25 having a diameter that allows the mold fastening bolt 2 to be inserted therethrough is provided, and the mold fastening bolt 2 is inserted into the through hole 25 from inside the mold 24, and the bolt is inserted outside the mold 24. An appropriate mold fastening hardware 26 is screwed and fastened to the outer end screw shaft portion 2 of the second embodiment. At this time, the cone 3 is pressed against the mold frame 24 by the fastening force of the mold fastening hardware 26, and the annular protrusion 12a on the side of the groove 12 for cutting off the bolt 2 with the deformation of the shaft hole 3a. (See FIG. 2) and moves to the main body 1 side, and finally the main body 1 is fixed at a predetermined position inside the formwork 24 with the cone 3 sandwiched between the rear wall 6 of the main body 1 and the formwork 24. Fixed to. It should be noted that when attaching the main body 1, the orientation of the main body 1 is determined so that the inclined guide surfaces 18 a and 18 b of the separator fitting concave portion 14 in the separator connecting portion 5 of the main body 1 spread upward.
[0016]
When the work of arranging the bars in the concrete placing space inside the formwork 24 is completed, as shown by phantom lines in FIGS. 4 and 5, each of the separators 27 is composed of a nut screwed into the one end screw shaft portion 27a. The separator shaft portion 27b adjacent to the head portion 28 is fitted to the separator connecting portion 5 of the main body 1 so that the head portion 28 (the head portion may be formed integrally with the separator) is fitted into the main body 1. It is pushed into the recess 14 downward from above. Thus, the separator shaft portion 27b pushes the both end portions 13a, 13b of the main body-constituting band body outward through the inclined guide surfaces 18a, 18b of the separator fitting concave portion 14 while resisting the elasticity, and is prevented from falling off. 15 (projecting portion 17), and is stored and supported at the bottom of the lower end of the separator fitting concave portion 14 (see FIG. 4). At this time, both end portions 13a and 13b of the main body-constituting band member elastically return to the original position, the retaining action portion 15 (projection portion 17) covers the upper side of the separator shaft portion 27b, and the withdrawal movement of the separator 27 upward. To block.
[0017]
The separator fitting recess 14 of the separator connecting portion 5 may be formed by notching downward from the upper side of the front wall 4 of the main body, and has a specific structure and a retaining action portion acting on the separator. The specific structure of No. 15 is not limited to the above embodiment. Further, the bolt fitting hole 19 of the bolt attaching portion 7 may be formed by notching laterally from one of the left and right side walls 8a, 8b of the main body 1 to the rear wall 6, and its concrete structure and The bolt fastening means 20 provided together is a form-fastening bolt in which the head part 9 is fitted into the main body 1 through the bolt fitting hole 19 so that it cannot rotate, and the shaft part 11 projects from the rear wall part 6 of the main body. 2 as long as the head 9 can be locked at a position adjacent to the main body rear wall portion 6 and the bolt 2 can be prevented from coming out of the bolt fitting hole 19. The target structure and the like are not limited to those of the above embodiment. Further, the mold fastening bolt 2 may not include the cone 3.
[0018]
【The invention's effect】
The present invention can be carried out and used as described above. According to the connecting tool between the formwork and the separator of the present invention, the main body is formed by bending a strip-shaped iron plate as described in the embodiment. It has a feature that it can be easily manufactured and can be completely filled with concrete, since it is a rectangular tube-shaped member that can be easily formed. Moreover, the form-fastening bolt can be securely attached to the main body by the bolt fastening means provided only by inserting the bolt laterally into the bolt fitting hole provided laterally in the main body. In addition, since the floating in the axial direction can be prevented by the bolt locking means, the work of attaching to the formwork can be easily performed, and since the screw hole processing is not required in the main body, the entire coupling tool can be manufactured at low cost. be able to.
[0019]
Then, when attaching the main body to this formwork, the orientation of the main body should be determined so that the separator fitting concave portion of the separator connecting portion of the main body front wall portion is in a direction in which the separator can be fitted downward from above. For example, the separator can be easily and reliably connected to the main body simply by pushing the separator end downward into the separator connection portion (separator fitting recess) of the main body attached to the formwork. Since the bolt fitting hole of the form fitting bolt mounting portion of the main body is in a horizontal direction substantially orthogonal to the separator fitting concave portion of the separator connecting portion, the strong downward pressing operation of the separator removes the form fitting bolt. There is no danger that the main body will fall down, and if the locking force of the bolt locking means of the bolt fastening part for formwork fastening is relatively weak. , It can be coupled to secure the mold the separator through the body.
[0020]
According to the configuration of the second aspect, as the bolt locking means, the bolt head fitted into the main body using the bolt fitting hole is moved in a direction away from the rear wall of the main body. As long as it has a function of preventing the formation, the bolt for fastening the form can be securely and strongly attached to the predetermined position of the main body despite the simple structure. Further, according to the configuration of the third aspect, the bolt can be more securely stopped from rotating than when a normal hexagonal head is used.
[0021]
According to the configuration of the fourth aspect, the main body can be configured at a low cost, and the separator can be easily and easily pushed into the separator fitting concave portion of the separator connecting portion, but the strong and secure retaining is ensured. The effect is also obtained.
[Brief description of the drawings]
1A is a cross-sectional plan view, and FIG. 1B is a perspective view of a main body.
FIG. 2 is a vertical sectional side view.
FIG. 3 is a longitudinal sectional front view in which a cone of a mold fastening bolt is omitted.
FIG. 4 is a front view of the main body.
FIG. 5 is a vertical sectional side view for explaining a method of use.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Square cylindrical main body 2 Forming bolt 3 Plastic cone 4 Main body front wall part 5 Separator connection part 6 Main body rear wall part 7 Bolt mounting parts 8a, 8b Main body side wall parts 9 Bolt head 10 Bolt tip screw shaft Portion 11 Bolt Shaft 12 Bolt Breaking Groove 13 Both Ends 14 of Main Body Constituent Body Separator Fitting Recess 15 Separator Retaining Retaining Portions 16a, 16b Two Notch Recessed Portions 17 Projection (Separator Retaining Retaining Portion)
18a, 18b Inclined guide surface 19 spreading upward 19 Bolt fitting hole 20 Bolt locking means 21 Bolt head fitting portion 22 Bolt shaft fitting portion 23a U-shaped cutout 23 Tongue piece 24 Formwork 25 Through hole 26 Formwork fastening hardware 27 Separator 27b Separator shaft 28 Separator head

Claims (4)

It consists of a rectangular tubular main body penetrating in the vertical direction, and a form-fastening bolt attached to a bolt attaching portion provided on a rear wall portion of the main body, and a separator connecting portion is provided on a front wall portion of the main body. A coupling tool between the provided formwork and the separator, wherein the separator coupling portion is a separator fitting concave portion formed by notching downward from an upper side of the front wall portion, and a head fits into the main body. A shaft portion comprising a retaining action portion acting on the separator fitted in the separator fitting recess, and the bolt mounting portion is notched laterally from one of the left and right side walls of the main body to the rear wall. A bolt fitting hole and a bolt locking means are formed, and the bolt locking means has a head fitted into the main body in a non-rotatable state through the bolt fitting hole, and a shaft part formed on the rear wall of the main body. The formwork fastening bolt projecting from the formwork, the head is locked at a position adjacent to the main body rear wall portion, and the formwork and the separator are used to prevent the bolt from coming off from the bolt fitting hole. Connector. The bolt fitting hole of the bolt attaching portion has a bolt head fitting portion provided at a position distant from the main body rear wall portion of the main body side wall portion, and a bolt fitting hole extending from the bolt head fitting portion to the center position of the main body rear wall portion. A bolt shaft fitting portion of a small width provided in a U-shape, and the bolt locking means is formed in a U-shape formed on a side wall portion opposite to the side wall portion of the main body provided with the bolt head fitting portion. The head of the form-fastening bolt, which is formed of a tongue in the notch and is fitted into the main body and adjacent to the rear wall of the main body, is bent by bending the tongue into the main body. The connecting tool between the mold and the separator according to claim 1, wherein the connecting tool is sandwiched between the main body rear wall and the main body. 3. The connector according to claim 1, wherein a head of the bolt for fastening the form is substantially a square having one side slightly smaller than an interval between left and right side walls of the main body. 4. The main body is formed by bending a single strip so that the front wall portion is formed at both ends overlapping each other, and the separator fitting concave portions of the separator connecting portion overlap with each other at the front wall portion. It is constituted by two notch concave portions formed at both ends of the band-shaped body, and the retaining action portion of the separator connecting portion is an inner side of at least one of the two notch concave portions. The connecting tool between the mold and the separator according to any one of claims 1 to 3, wherein the connecting tool is configured by a protruding portion formed on the separator.

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