JP3996614B2 - spacer - Google Patents

Description

  The present invention relates to a spacer.

Conventionally, as the spacer 47, as shown in FIG. 10, a spacer body having an appropriate height with a female thread portion 48 penetrating through a central portion is known. Is to be installed. As another spacer, there is an invention of 2002-61334.
JP 2002-613349 A

  However, the spacer 47 shown in FIG. 10 has a problem that the female screw portion 48 is blocked by the lower slab reinforcement 49 installed on the upper surface of the spacer body.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a spacer in which the female screw portion is not blocked by the lower slab muscle.

A spacer for solving the above-described problems is provided with a female screw portion vertically passing through a central portion of a spacer main body having an appropriate thickness, on the upper surface of the spacer main body sandwiching the female screw portion, and a female screw On the X-axis and Y-axis passing through the center of the part, protrusions having a diameter larger than that of the female thread part are provided opposite to each other, and high-position mounting parts are formed on both sides of the protrusion on the X-axis to form the female thread part. It is characterized in that a low-position mounting portion is formed on both sides of the projection on the Y-axis and is opposed to the female screw portion .

  When the slab lower bar is placed on the reinforcing bar placement part, the movement of the reinforcing bar is regulated by the protrusion, so that the female screw part is not blocked. Moreover, it can respond to different covering thickness by mounting the slab lower reinforcement in the high place mounting part or the low place mounting part of the reinforcing bar mounting part.

The following describes embodiments of the spacer over the present invention. First, a board anchor and a spacer to which the board anchor is attached will be described, and then a hollow slab binding tool using the board anchor and the spacer will be described. In each embodiment, the same configuration will be described using the same reference numerals, and different configurations will be described using different reference numerals.

  FIG. 1 shows a board anchor 1 according to a first embodiment. This board anchor 1 is made of synthetic resin, and is provided at two free-end portions of the hook pieces 3 and two hook pieces 3 opened outward from the lower end portion of the shaft body 2 toward the upper end side. It comprises a positioning piece 4 for positioning the shaft body 2 at the center of the mounting hole.

  The shaft body 2 is composed of a cylindrical tip portion 5, a rectangular parallelepiped intermediate portion 6 formed integrally therewith, and a cylindrical male screw portion 7 formed thereon. Then, two hooking pieces 3 opened outward toward the upper end side are integrally formed at the tip portion 5, and a positioning piece 4 is integrally formed at a free end portion of the hooking piece 3.

  The positioning piece 4 is attached to the free end portion of the latching piece 3 with a connecting piece 8 at an angle α of 120 to 150 degrees in the inner direction, and a surface extending from the connecting piece 8 to the positioning piece 4 is an intermediate portion. It becomes the parallel surface 9 with a side surface, and becomes the inclined surface 10 in which a tip extends outside from the parallel surface 9. In addition, the attachment angle of the positioning piece 4 is not limited to the above, and can be attached at an arbitrary angle.

  Further, as shown in FIG. 2 (3), when the positioning piece 4 is fitted into the mounting hole 12 of the concrete slab mold 11, the upper part protrudes upward from the mounting hole 12. Is attached to the free end of the latch piece 3. The positioning piece 4 can also be attached to the free end portion of the latching piece 3 so that the upper portion does not protrude upward from the attachment opening 12.

  FIG. 2 shows a method of attaching the board anchor 1 to the mounting hole 12 of the concrete slab formwork 11. First, as shown in (1) of the same figure, the front-end | tip part 5 is inserted in the opening hole 12 for attachment.

  Next, as shown in (2), when the board anchor 1 is pushed into the mounting hole 12, the latching piece 3 opened to the outside is closed, and the parallel surface 9 of the positioning piece 4 is moved to the side surface of the intermediate portion 6. Pressed.

  Next, as shown in (3), when the latching piece 3 is pushed out from the attachment opening 12 and opened to the outside, the inclined surface 10 of the positioning piece 4 is pressed against the side surface of the intermediate portion 6 for attachment. The shaft body 2 is positioned at the center of the mounting opening 12 by fitting into the opening 12 and this fitting. Then, when the upper portion of the positioning piece 4 slightly protruding from the mounting hole 12 is pushed downward by the nut 13 of the female screw portion 7, the latching piece 3 is evenly pushed open, and the mounting hole 12. It is hung around the periphery of the.

  FIG. 3 shows a board anchor 14 according to the second embodiment. The board anchor 14 is fitted into the mounting hole 12 at the upper part of the shaft body 2 without providing the positioning piece 4 on the hooking piece 3 of the board anchor 1 of the first embodiment. The united body 15 is integrally formed, and the other configuration is the same as that of the board anchor 1 of the first embodiment. This does not have a holding function of the latch piece 3, but secures the anchor holding function.

  The shaft body 2 between the retaining pieces 3 in the board anchor 1 has a thickness A of (0.8 to 1.0) × φ and a width B of (0) when the diameter of the mounting hole 21 is φ. 0.2-0.3) × φ. The latch piece 3 has a thickness C of (0.2 to 0.3) × φ, a maximum opening dimension D of (1.25 to 1.5) × φ, and an angle of inclination of the latch piece of 1 : 1.5 to 2.5. With such dimensions, the pulling strength can be increased.

  FIG. 4 shows a method of attaching the board anchor 14 in the same manner as described above. First, as shown in (1) of the same figure, the front-end | tip part 5 is inserted in the opening hole 12 for attachment. Next, as shown in (2), when the board anchor 14 is pushed into the mounting hole 12, the latching piece 3 opened outward is closed.

  Next, as shown in (3), the fitting body 15 is fitted into the mounting opening 12 to position the shaft body 2 at the center thereof, and the latching piece 3 is pushed out from the mounting opening 12. At the same time, it is evenly opened and latched around the periphery of the mounting hole 12.

  FIG. 5 shows a board anchor 16 according to the third embodiment. This board anchor 16 is provided with a cylindrical body 18 screwed into the head side of the bolt 17 and provided with two latching pieces 19 opened outward toward the other end. A positioning piece 20 is connected to the end portion by a ring-shaped fitting body 20a.

  The positioning piece 20 slides the bolt 17, and when the bolt 17 is fitted in the mounting hole 12, the bolt 17 is positioned at the center of the mounting hole and the latching piece 19 is moved outward. It is something to open.

  As shown in FIG. 5 (6), the positioning piece 20 is also latched so that the upper portion protrudes upward from the mounting hole 12 when fitted into the mounting hole 12 of the mold 11. It is attached to the free end of the piece 19. The positioning piece 20 can also be attached to the free end portion of the latch piece 19 so that the upper portion does not protrude upward from the attachment opening 12.

  Therefore, as shown in (5) of the figure, when the board anchor 16 is pushed into the mounting hole 12, the latching piece 19 closes inward and the positioning piece 20 moves to the upper side of the bolt 17. When the board anchor 16 is further pushed in, as shown in (6) of the figure, the positioning piece 20 is also inserted into the mounting hole 12, and the bolt 17 is positioned at the center thereof, and the latching piece 19 is opened evenly and latched around the periphery of the mounting opening 12. And if the upper part of the positioning piece 20 protruded slightly from the mounting hole 12 is pushed downward by the nut 13, the latching piece 19 can be further pushed open.

  FIG. 6 shows a board anchor 21 according to the fourth embodiment. The board anchor 21 is the same as the board anchor 1 of the first embodiment except that a high nut 22 is screwed into the male thread portion 7 of the board anchor 1 of the first form.

  As shown in FIG. 6, the board anchor 21 is used when a heat insulating material 23 is installed on the mold 11 and the male screw portion 7 cannot be screwed into the spacer 24. The spacer 24 can be attached by screwing the connecting bolt 25 from the spacer 24 side into the high nut 22.

  The high nut 22 is screwed into the male screw portion 7 of the board anchor 1 of the first embodiment, but is not limited thereto, and is not limited to the male screw portion 7 of the board anchors 14 and 16 of the second and third embodiments. It can also be screwed in. The board anchor 21 is attached in the same manner as described above.

FIG. 7 shows an embodiment of the spacer 26. The spacer 26 is made of a synthetic resin, and a female screw portion 27 is provided vertically through a central portion of the spacer main body having an appropriate height. The spacer 26 is opposed to the X axis direction and the Y axis direction with the female screw portion 27 interposed therebetween. Protrusions 28 are provided at the respective locations, and a reinforcing bar placement portion 29 is formed between these protrusions 28.

The protrusion 28, as shown in FIG. 7, provided on the X on the axis and Y-axis passing through the center of the female threaded portion 27, a female screw portion in the slab under muscle 30 placed on the reinforcing bar placement portion 29 The diameter is larger than that of the female threaded portion 27 so that the 27 is not blocked . That is, since the movement of the lower slab rebar 30 arranged in the X-axis direction and the Y-axis direction is restricted by the protrusion 28, the female screw portion 27 is not blocked.

Further, as shown in FIG. 7 , the reinforcing bar placement part 29 is formed with a step between a high place placement part 31 on both sides of the projection on the X axis and a low place placement part 32 on both sides of the projection on the Y axis. And the low place mounting part 32 is divided into two by the convex part 33, and the lower slab reinforcement 30 can be arranged in parallel. The high place placement section 31 and the low place placement section 32 are for securing different covering thicknesses. For example, when constructing a slab indoors, the lower place placement section 32 has a lower slab muscle 30. When constructing the slab outdoors, the lower slab muscle 30 is laid out at the high place placement portion 31.

  FIG. 8 shows an embodiment of a hollow slab binding tool (hereinafter referred to as a binding tool) 34 using the spacer 26 and the board anchor 1. The binding tool 34 includes a spacer 26, a board anchor 1 provided on the lower side of the female screw portion 27 of the spacer 26, and a connecting column 35 provided on the upper side of the female screw portion 27. Yes.

  The spacer reinforcing bar placement portion 29 is provided with a horizontal bar 30a and a vertical bar 30b of the slab lower bar 30, which are arranged so as not to block the female screw part 27 by the projection 28. The connecting column 35 can be securely screwed into the portion 27.

  This connection support | pillar 35 prevents the float of the hollow material installed in the formwork, and the reinforcing bar restraint tool 37 which pinches | interposes the upper slab reinforcement 36 to the male screw part 7 of the upper part is provided. The reinforcing bar restraint 37 is composed of an upper clamping plate 38 and a lower clamping plate 39, and a horizontal bar 36a of the upper slab bar is placed on the lower clamping plate 39, and a vertical bar 36b arranged on the horizontal bar 36a. An upper sandwiching plate 38 is placed on the base plate and is fastened with a nut 40. Therefore, it is possible to prevent the hollow material sandwiched between the upper slab reinforcement 36 and the lower slab reinforcement 30 from being lifted.

BRIEF DESCRIPTION OF THE DRAWINGS It is a board anchor of 1st Embodiment, (1) is a front view, (2) is a side view, (3) is a top view. 1A and 1B show a method for attaching a board anchor according to a first embodiment, wherein FIG. 1A is a sectional view in which the tip of the board anchor is inserted into an attachment hole, and FIG. Sectional drawing inserted in the opening for use, (3) is a sectional view in which the anchor for board is attached to the opening for attachment. It is the board anchor of 2nd Embodiment, (1) is a front view, (2) is a side view, (3) is a top view. It shows the mounting method of the board anchor of the second embodiment, (1) is a sectional view in which the tip of the board anchor is inserted into the mounting hole, (2) is a mounting piece Sectional drawing inserted in the opening for use, (3) is a sectional view in which the anchor for board is attached to the opening for attachment. It is the board anchor of 3rd Embodiment, (1) is sectional drawing, (2) is a top view, (3) is AA sectional drawing of (1), (4) is a perspective view, (5 ) And (6) are cross-sectional views of attaching the board anchor to the attachment opening. It is sectional drawing of the anchor for boards of 4th Embodiment. It is a spacer, (1) is a sectional view, (2) is a plan view, and (3) is a perspective view. It is sectional drawing of a binding tool. It is sectional drawing of the conventional board anchor. It is a conventional spacer, (1) is a sectional view, (2) is a plan view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 14, 16, 21, 41 Board anchor 2 Shaft body 3, 19, 43 Hanging piece 4, 20 Positioning piece 5 Tip part 6 Middle part 7 Male thread part 8 Connection piece 9 Parallel surface 10 Inclined surface 11, 46 Form 12, 45 Mounting opening 13, 40 Nut 15 Fitting body 17, 44 Bolt 18, 42 Cylinder 20 a Fitting body 22 High nut 23 Heat insulating material 24, 26, 47 Spacer 25 Connecting bolt 27, 48 Female thread part 28 Protrusions 29 Reinforcing bar placement part 30, 49 Slab lower muscles 30a, 36a Lateral muscles 30b, 36b Longitudinal reinforcement 31 High place placement part 32 Low place placement part 33 Convex part 34 Tightening tool 35 Connecting strut 36 Slab upper muscle 37 Holding plate 38 Upper clamping plate 39 Lower clamping plate

Claims (1)

On the X-axis and the Y-axis passing through the center of the female screw portion on the upper surface of the spacer main body , the female screw portion being provided vertically through the center portion of the spacer main body having an appropriate thickness. Protrusions with a diameter larger than that of the female screw part are provided on the upper side, and a high place mounting part is formed on both sides of the protrusion on the X-axis so as to face each other with the female screw part interposed therebetween. A spacer is characterized in that low-side mounting portions are formed on both sides of the spacer and are opposed to each other with a female screw portion interposed therebetween .

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