JP2009007892A - Bar material for frame panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bar material for a frame panel which makes use of a wooden bar which has become shorter because of repeated use, which can be easily fixed to an end plate, and the length of which can be easily adjusted in agreement with the dimension of the frame panel. <P>SOLUTION: In the interior of a metal bar 6 having a groove-shaped cross section, wooden bars 7a, 7b are buried in and fixed to a joint between the end plate having at least both ends. Then the wooden bar 7a is projected from one end of the metal bar 6. A flange 9 which is brought into contact with the outer surface of the end plate is formed along the edges on both sides of the metal bar 6. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a crosspiece for a formwork panel.

A general formwork panel has a vertical dimension corresponding to the height of a concrete placing part, and is constructed by attaching a frame around the end plate and attaching a crosspiece to the outer surface of the end plate.
As the crosspieces, square bars having a length of 3 to 4 m were used by cutting them according to the dimensions of the formwork panels. Since the formwork panel is a temporary member, the crosspiece, which is a part of the formwork panel, is often reused. However, since it gradually becomes shorter when it is used repeatedly, a new crosspiece had to be used for the large formwork panel.
In recent years, metal crosspieces that are highly durable and can be used over and over again have come to be used. However, metal crosspieces are difficult to cut according to the dimensions of the formwork panels and can be easily nailed to the end plate. Since it cannot be used, it can only be used for formwork panels of the same size, and it may be inconvenient when removing the frame.

Conventionally, a supporting edge is erected on the surface of the formwork panel, and a storage ditch is formed along the inner longitudinal direction of the support side, and a holding member that can be nailed with wood or the like in the storage ditch There is known a fixed frame for a pier of a concrete form panel in which is packed (see Patent Document 1).
Although this fixed frame can be easily nailed and removed from the plywood through a wooden holding material, it is made of aluminum over its entire length, so it can be easily lengthened according to the dimensions of the formwork panel. The disadvantage of not being able to adjust is not improved.
In addition, because the storage ditch has a special cross-sectional shape, it is not possible to pack a used pier as it is.

Japanese Patent Laid-Open No. 5-195621

  The problem to be solved by the present invention is to use a wooden bar that has been shortened by repeated use, it is easy to fix to the end plate, and the length can be easily adjusted according to the dimensions of the form panel Is to provide.

The present invention relates to a crosspiece for a formwork panel in which a crosspiece is attached to the outer surface of a wooden end plate, and the wooden crosspiece is embedded in a joint portion between the end plate including at least both ends in a cross-section grooved metal crosspiece. The wooden bar protrudes from one end of the metal bar.
A flange that contacts the outer surface of the end plate may be formed along both side edges of the metal bar.

According to the invention according to claim 1, the wooden crosspiece shortened by repeated use can be used again by combining with a metal crosspiece, and at both ends of the crosspiece material and the joint portion of the end plate having low strength, The crosspiece and the end plate can be easily and firmly nailed through the wooden crosspiece.
In addition, the length of the crosspiece can be easily adjusted according to the dimensions of the formwork panel by cutting the wooden crosspiece protruding from one end of the metal crosspiece without changing the length of the metal crosspiece that is difficult to cut. Is possible.
According to the second aspect of the invention, not only the strength of the metal beam itself is increased, but also the flange of the metal beam is in contact with the outer surface of the mirror plate and faces the swelling of the mirror plate due to the concrete pressure, so that the wooden beam is embedded. The strength is increased even in parts where there is not.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 and 2 show a formwork panel 1 according to the present invention. The formwork panel 1 has a vertical frame 3 attached along both end portions of the outer surface of the end plate 2, and a horizontal frame 4 attached along upper and lower end portions, and two bars extending in the vertical direction at the outer surface intermediate portion. The material 5 is attached.
The end plate 2 is made of a plywood having a thickness of 12 mm, and is cut into a size corresponding to the width and height of the concrete placement site. In this embodiment, since the height of the mold panel 1 is higher than 1800 mm which is the standard size of the plywood, a lower upper end plate 2b is added above the lower end plate 2a having a height of 1800 mm.
The vertical frame 3 and the horizontal frame 4 are made of square members having a cross section of depth 48.6 mm × width 24 mm, and are nailed to the end plate 2.

As shown in FIGS. 3 to 5, the crosspiece 5 includes a metal crosspiece 6 having a cross-sectional groove shape, and wooden crosspieces 7 a and 7 b that are respectively embedded and fixed at both ends of the metal crosspiece 6.
The metal bar 6 is made of aluminum, steel or the like having a thickness of about 2 mm, and has flanges 9 protruding outward along both side edges of the groove-shaped portion 8 as shown in FIG. A plurality of nail holes 11 each having a diameter of about 2 mm are formed on the side surfaces of both end portions of the groove-shaped portion 8.
In the present embodiment, the length of the metal bar 6 is 1800 mm, the outer depth is 48.6 mm, the inner width of the groove-shaped portion 8 is 25 mm, and the width of the flange 9 is 10 mm.
In addition, the depth outside dimension of the metal crosspiece 6 is a dimension according to the pipe dimension of a general temporary material. In general, the length of the metal bar 6 is selected from 1800 mm, 2300 mm, and 2800 mm, which is suitable for the size of the formwork panel 1.

The wooden cross 7a embedded in one end of the metal cross 6 is made of a square bar having a cross section of 46 mm × 24 mm and a length of 1000 mm. As shown in FIG. 7, a notch 10 having a depth corresponding to the thickness (2 mm) of the metal rail 6 is formed on the front surface of the lower half of the wooden rail 7a.
Then, as shown in FIG. 4, the lower half of the wooden crosspiece 7a is inserted into the metal crosspiece 6, and a nail 12 is driven through a nail hole 11 formed on one side of the metal crosspiece 6 to fix the wooden crosspiece 7a. .
Since the notch 10 is formed in the lower half surface of the wooden crosspiece 7a, the metal crosspiece 6 is fitted into the notch 10 and the surface of the wooden crosspiece 7a and the surface of the metal crosspiece 6 are flush with each other ( 5), the upper half of the wooden cross 7a protrudes from one end of the metal cross 6. FIG.

The wooden cross 7b embedded in the other end of the metal cross 6 is made of a square bar having a cross section of 46 mm × 24 mm and a length of 400 mm.
The wooden cross 7b is fitted into the other end of the metal cross 6 and a nail 12 is driven and fixed from a nail hole 11 formed on the side of the metal cross 6.

When using the crosspiece 5, the wooden crosspiece 7a is cut in advance and the length of the crosspiece 5 is adjusted to the height of the end plate 2.
Then, the crosspiece 5 having the adjusted dimensions is arranged so as to go straight to the joint between the upper end plate 2b and the lower end plate 2a, and the wooden crosspiece 7a is located on the upper end plate 2b side, and the flange 9 of the metal crosspiece 6 is provided. Is brought into contact with the surface of the end plate 2, and the end plate 2 and the wooden crosspieces 7a and 7b are fixed with nails, respectively.
Then, the wooden crosspiece 7a provided at one end of the metal crosspiece 6 is disposed across the joint of the end plate 2, and is fixed to the upper end plate 2b and the lower end plate 2a. Reinforced with 7a.
Further, the flange 9 of the metal bar 6 comes into contact with the part where the wooden bars 7a and 7b are not arranged to resist the deformation of the end plate 2.

Of course, the dimension of each member is not limited to the said Example, According to the height etc. of the structure to construct | assemble, it can change suitably. For example, the thickness of the metal crosspiece 6 varies depending on the material, and the cross-sectional dimensions of the wooden crosspieces 7 a and 7 b change according to the thickness of the metal crosspiece 6. Moreover, the length of the wooden crosspieces 7a and 7b can be changed according to the length of the metal crosspiece 6 and the length of the square bar to be reused.
Furthermore, when the length of the metal cross 6 is long, or when the joint of the end plate 2 is in the middle part of the cross piece 5, another wooden piece is placed at a position corresponding to the joint of the end plate 2 in the intermediate part of the metal cross 6. A crosspiece is embedded and fixed, and the crosspiece 5 is fixed to the end plate 2 through the wooden crosspiece.

The perspective view of a formwork panel. Sectional drawing of a formwork panel. The perspective view seen from the back side of a crosspiece. The rear view of a crosspiece. The perspective view seen from the front side of a crosspiece. The perspective view of a metal crosspiece. The perspective view of the wooden crosspiece embedded in the one end part of a metal crosspiece.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Formwork panel 2 End plate 2a Lower end plate 2b Upper end plate 3 Vertical frame 4 Horizontal frame 5 Crosspiece 6 Metal crosspiece 7a, 7b Wooden crosspiece 8 Groove part 9 Flange 10 Notch 11 Nail hole 12 Nail

Claims (2)

  A frame material for a formwork panel in which a crosspiece is attached to the outer surface of a wooden end plate, and a wooden crosspiece is embedded and fixed in a joint with the end plate including at least both ends inside a grooved metal cross section. And the crosspiece for formwork panels, wherein the wooden crosspiece protrudes from one end of the metal crosspiece.   The crosspiece for formwork panels of Claim 1 which formed the flange which contact | abuts the outer surface of the said end plate along the both-sides edge of the said metal crosspiece.

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