JPH0594453U - Concrete formwork crosspiece - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] When connecting the crosspieces of adjacent frame plates with a fastener, tighten them when the crosspieces of the formwork are fixed vertically to the back side edge of the frame plate. Make sure that the tightening force of the attachment acts more strongly on the frame plate. [Structure] A substantially horizontal frame plate fixing portion 11 fixed to the back surface of the frame plate 2 and having a predetermined width, and a state in which the frame plate fixing portion 11 rises substantially vertically from one side portion in the width direction along the longitudinal direction. Metal crosspiece 1 that is integrally formed with a connecting part 10 that is connected to the form crosspiece 1 at the side end of the adjacent formwork material 3.
In, the outer surface 12 of the top of the connecting portion is the connecting portion 10
It is characterized in that it slightly protrudes to the opposite side of the frame plate fixing portion 11 from the projected corner portion 13 formed by the frame plate fixing portion 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention generally relates to a formwork crosspiece used on the backside of a concrete formwork, and more specifically, a vertical direction is applied to both ends of the backside of a frame plate having a predetermined width. It relates to the form rails that are fixed to.

[0002]

[Prior Art]

 FIG. 2 is a partial cross-sectional view of a formwork material using this type of conventional formwork bar. The formwork material 3 is fixed to the frame plate 2 of a predetermined width and the back surface of the formwork material 2 in the vertical direction. It is composed of the formed frame crosspiece 4 and a crosspiece of another shape not shown. The frame crosspiece 4 fixed to the rear end of the frame plate 2 is an extruded material obtained by extrusion-molding an aluminum alloy, and has a predetermined length of the connecting portion 40 that rises substantially vertically from the frame plate 2, and the connecting portion 40. It is composed of a frame plate fixing portion 41 that is integrally formed in a state of being projected substantially horizontally from the lower end of the frame to a side, and a projecting corner portion 43 formed by the connecting portion 40 and the form frame fixing portion 41. However, the crosspiece 4 is vertically aligned with the back surface of the frame plate 2 so as to coincide with the side end portion of the frame plate 2, and in this state, the frame plate fixing portion 41 is fixed to the frame plate 2 with a bolt nut (not shown). There is. When constructing the formwork, the adjacent formwork materials 3 and 3 are butted so that the outer side surfaces 42 and 42 of the connecting portions 40 and 40 of the crosspieces 4 and 4 match, and the connecting portions 40 and 40 are spaced at predetermined intervals. Construction is carried out in such a manner that adjacent formwork materials 3, 3 are sequentially connected to each other by a clip or a bolt nut (not shown) passed through the hole 44 formed in the. The outer surface of the connecting portion 40 is formed in a groove shape in order to more effectively apply the tightening force of the clip, the bolt, the nut, or other tightening tool.

[0003]

[Problems to be solved by the device]

 In the conventional frame 4 used in FIG. 2, the outer surface 42 of the top of the connecting portion 40 and the projecting corner 43 are on the same vertical plane, and they are connected to the adjacent rails 4 as shown in FIG. At this time, the outer side surface 42 and the projecting corner 43 of the tops of the connecting portions 40, 40 are butted against each other, and as a result, the tightening force of the fasteners reaching the end portions of the frame plates 2, 2 is restricted. An object of the present invention is to provide a formwork crosspiece that solves the above-mentioned problems.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the formwork crosspiece according to the present invention is fixed to the frame plate, and the outer surface of the top of the connecting portion that rises vertically from the base located on the frame plate side is It is slightly projected to the opposite side of the frame plate fixing part from the projected corner part.

[0005]

[Action]

 The formwork rail according to the present invention is fixed to the back surface of the frame plate so that the projected corner portion formed by the connecting portion and the frame plate fixing portion is located slightly in the center of the side end portion of the back surface of the frame plate. When connecting the adjacent crosspieces of the formwork, the projected corners of the connected crosspieces do not abut each other and a gap is created between them. Due to this gap, the tightening force of the tightening tool is not restricted by the projecting corners of the adjacent frame members, and the tightening force is more effective for the joint surface between the adjacent frame plates. Act on.

[0006]

【Example】

 A preferred embodiment of the form rail according to the present invention will be described in detail with reference to FIG. FIG. 1 is a partial cross-sectional view showing a state in which mold members using mold bars according to an embodiment of the present invention are connected to each other. In the following description of the embodiments, the same members as those in the above-mentioned conventional technique are designated by the same reference numerals and the description thereof will be omitted.

The mold frame 1 of this embodiment is made by extruding an aluminum alloy into a constant cross-sectional shape, and is a frame of a substantially horizontal and predetermined width fixed to the back surface of a frame plate 2 made of plywood. The plate fixing portion 11 and the frame of the side end portions of the adjacent frame members 3 are integrally formed along the longitudinal direction so as to rise substantially vertically from one side portion in the width direction of the frame fixing portion 11. It is configured by a connecting portion 10 that is connected to the beam 1.

The outer surface 12 (the outer surface of the L shape) of the top of the connecting portion 10 is fixed to the frame plate more than the projecting corner portion 13 formed by the connecting portion 10 and the frame plate fixing portion 11. It is formed on the opposite side of the portion 11, that is, slightly protruding toward the crosspiece 1 at the side end portion of the adjacent formwork material 3 at the time of construction.

The crosspiece 1 of this embodiment is arranged along the lengthwise direction of the frame plate 2 so that the projected corner portion 13 is slightly closer to the center than the side end portion of the back surface of the frame plate 2, and in this state, the bolt 5 and the nut It is fixed to the frame plate 2 with 6. Further, between the opposite ends of the back surface of the frame plate 2, a proper number of other cross-sections (not shown) are fixed in the vertical direction, and a horizontal cross-piece (not shown) is fixed at the upper end to fix the formwork material 3. Constitute. Since the frame plate 2 is a veneered plywood as described above, a rotation preventing protrusion is formed in advance on the outer periphery of the bolt 5.

In the formwork material 3 configured as described above, the side edges of the adjacent formwork materials 3, 3 are abutted against each other during construction of the formwork as shown in FIG. The outer side surfaces of the connecting portions 10 and 10 are overlapped with each other, the base end portions of the clips 7 are inserted into the holes 14 formed at predetermined intervals in the connecting portions 10 and 10, and the tip ends of the clips 7 are opposite to the insertion side surface. Forcibly cross over to connect. The clip 7 can be replaced with a bolt nut or other fastener not shown.

In the state of construction as described above, a gap is formed between the projecting corners 13, 13 of the adjacent crosspieces 1, 1 as shown in the drawing, and the projecting corners 13 do not abut each other. The tightening force of each is not restricted by the projecting corners 13 of each other, and its action effectively extends to the abutting portion of the frame plates 2 and 2. Therefore, the form members 3 and 3 are connected to each other in a more tightly clamped state, and the form can be more firmly constructed.

In the formwork crosspiece according to the present invention, if the outer surface (the surface facing the frame plate) of the frame plate fixing portion is substantially horizontal, it is confirmed that the entire wall thickness is horizontal. It does not need to be formed, and it may be formed in another sectional shape. Further, the projecting corner portion 13 can be implemented even if it has an arc shape.

[0013]

[Effect of the device]

 According to the form rail according to the present invention, since the tightening action of the fastener with respect to the adjacent frame plates in the installed state is more effectively exerted, the form can be installed more firmly.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a state in which mold members using mold bars according to an embodiment of the present invention are connected to each other.

FIG. 2 is a partial cross-sectional view showing a state in which formwork materials using conventional formwork bars are connected to each other.

[Explanation of symbols]

 1,4 Formwork crosspiece 10,40 Connection part 11,41 Frame plate fixing part 12,42 Outer side surface of connection part 13,43 Outer corner part 14,44 Connection part hole 2 Frame plate 3 Form material 5 Bolt 6 Nut 7 clip

Claims (1)

[Scope of utility model registration request] 1. A substantially horizontal frame plate fixing portion fixed to the back surface of the frame plate and having a predetermined width, and a state in which the frame plate fixing portion rises substantially vertically from one side portion in the width direction of the frame plate fixing portion along the longitudinal direction. A metal rail having a connecting portion connected to a mold rail at a side end of an adjacent mold member, the outer surface of the top of the connecting portion is the connecting portion and the frame plate fixing portion. A concrete form frame crosspiece characterized by slightly projecting to the opposite side of the frame plate fixing part from the projected corner part formed by.