JPS597955Y2 - Formwork - Google Patents

Description

[Detailed description of the invention] The present invention is applied to formwork used, for example, in concrete formation, and aims to easily connect panels to each other using fixing rails and fixing devices. The details are as follows.

1 is a panel, 2 is a fixed rail, and 3 is a fixing device.

The front surface 11 of the panel 1 is a regulating surface, and the back surface 12 is provided with a dovetail groove 14 extending along a corner edge along a connection end surface 13 and a dovetail groove 15 parallel to this on the inner side.

The dovetail groove 14 acts in a direction forming an angle with the surface 11, that is, when used as in the vertical panel of FIG.
It acts in one direction.

The grooves 14 and/or the grooves 15 can be provided on a suitable end surface of the connection end surface 13 depending on the shape of the panel 1.

For example, in the case of a square, it can be placed on the left and right and/or the top and bottom,
In the case of pentagons, hexagons, etc., all end faces or appropriate end faces are used.

The fixing rail 2 has a machined cross section and has a dovetail 22 on the lower edge of one side of the base plate 21 that can be engaged with the dovetail groove 14 or 15 of the panel 1, and a notch 23 for preventing the fixing device 3 from slipping on the other side edge. ing.

If the panel 1 is large and the rail 2 is also long, cutouts 23 are provided at appropriate intervals.

Further, a through hole 25 is bored in the belly plate 24 at a position related to the notch 23.

The fixing device 3 is attached to the dovetail groove 14' of the panel 1' to be connected.
Alternatively, it has a dovetail 31 that engages with the dovetail 15' and a hook plate 32 disposed on the dovetail. A cam 34 that moves forward and backward on the hook plate 32 is pivotally mounted on a shaft 35.

This hook plate 32 can pass through the through hole 25 of the belly plate 24 of the rail 2.

Further, the length of the dovetail portion 36 of the dovetail 31 approximately matches the length of the notch 23 of the rail board 21, and this dovetail 31 has ears 37, 37 protruding outward from both ends of the dovetail portion 36. ing.

In the drawings, 41 is a guide for the plate 32, and 42 is a handle for the cam 34.

The formwork is assembled as follows.

If the panels are on the same plane, panel 1 to be installed consecutively,
1' connection end surfaces 13, 13' are butted together, and the rail 2
Fit the dovetail 22 into the dovetail groove 15 of the panel 1, and attach the fixing device 3.
Insert the hook plate 32 into the through hole 25 of the rail belly plate 24, hang the hook piece 33 on the edge of the board 21, and place the dovetail part 36 facing the notch 23 of the board 21 into the dovetail groove 15' of the panel 1'. Once fitted, the cam 34 is rotated by the handle 42.

As the cam rotates, the hook piece 33 and the dovetail portion 36 approach each other, so that the panels 1, 1' can be assembled in close contact with each other by the dovetail grooves 15, 15'.

Further, the dovetail portion 36 engages with the notch 23 to prevent displacement in the vertical direction.

When disassembling, the cam 34 may be reversed.

In addition, when the panels are located on a plane that intersects with each other, the end surface 13' of the front surface 2' of the panel 1' is placed on the end surface 13' of the panel 1'.
Place the dovetail 22 of rail 2 on panel 1.
and the dovetail portion 36 of the fixing device 3 is fitted into the dovetail groove 14' of the panel 1'.

The rest is the same as all the times. Panel 1 is moved by the rotation of the cam 34.
, 1' closeness and separation can be made.

According to the present invention, the panel is provided with a dovetail groove, the fixed rail and the fixing device are provided with dovetails that engage with the dovetail groove, and the dovetails of the fixed rail and the fixing device are separated by a cam provided on the fixing device. As a result, the formwork can be assembled and disassembled with extremely simple work.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view of a specific example of the formwork according to the present invention, with parts of the panels and fixed rails taken out, and Figure 2 is a cross-sectional view of the connected parts in the assembled state. FIG. 3 is a cross-sectional view of the connecting portion in another assembled state, and FIG. 4 is a schematic view showing an example of the unfolded state of the panel surface. 1...Panel, 2...Fixed rail, 3
...Fixing device, 12... Back side, 13.
...Connection end surface, 14.15...Dovetail groove, 21...Board, 22...Dovetail, 23
...Notch, 24... Belly plate, 25...
...Through hole, 31...Ant, 32...
Hook plate, 33... Hook piece, 34... Cam,
35...shaft, 36...dovetail part, 37.
...Ear piece.

Claims (4)

[Scope of utility model registration request] (1) Consisting of a panel, a fixed rail, and a fixing device, the panel has a dovetail groove along the connection end surface on one side, and the fixed rail has a dovetail on the lower edge of one side that can engage with the dovetail groove of the panel. The fixing device has a dovetail that engages with the dovetail groove of the panel to be connected, and a hook plate disposed on the dovetail. The formwork that works together to support the cam that advances and retreats from this hook plate. (2) There are two dovetail grooves on the panel, one located on the corner edge and one parallel to it on the inside, the former acting in a direction that forms an angle with the panel surface and the latter acting in the direction of the surface. The formwork according to claim (1) of the utility model registration claim. (3) The fixing rail has a cross section of approximately ■ shape, has a dovetail as described above on the lower edge of one side of the board, a notch for preventing the fixing device from slipping on the other side edge, and a hook of the fixing device on the belly plate. The formwork according to claim (1) of the utility model registration, which has a through hole through which the board passes. (4) The dovetail of the fixing device has a dovetail portion that fits into the notch of the rail and a lug portion that extends over the notch and extends over the board.Claim (3) of the Utility Model Registration Claim Formwork as described.