JPS6241075Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for connecting paper forms for forming legal frames.

When forming a frame for forming a legal frame, it is necessary to bend or connect paper forms such as corrugated paper. For this reason, various devices have been proposed for connecting paper forms that constitute forms. For example, in Japanese Utility Model Application Publication No. 55-111, paper forms made by folding in half are butted together at the stepped portions, and a connecting fitting that spans the butted stepped portions is inserted between both sides of the stepped portions on both sides.
A device has been proposed in which both side surfaces of both stepped portions are held between the two side surfaces by metal fittings. Also, Utsukai Showa 55-9367
In this issue, a paper form made by folding water-resistant corrugated board material in half is butted together at the stepped portions, and a connection piece spanning both the stepped portions is placed in the gap between the corrugations of the corrugated core located at the butted end surfaces of both stepped portions. A device in which wires are inserted and connected has been proposed. In these devices, the connection angle in the vertical plane of the paper form can be changed by the elasticity of the connecting metal fittings and connecting wires in order to adapt to unevenness on the slope.

However, with the above-mentioned connecting device, steps that fit each other must be formed at the connecting parts of the paper forms, which makes the work complicated and has the disadvantage that the connection strength of the paper forms is not sufficient. .

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a paper form connecting device that allows a pair of paper forms to be firmly connected with a simple operation.

According to the present invention, the presser metal fitting includes a U-shaped bent portion, a connecting plate having a cross-shaped through hole, and a wedge that engages with the bent portion of the presser metal fitting.

Therefore, the joined parts of the paper forms are butted together, the bent part of the presser fitting is inserted from one side through the notch groove or the through hole, and then the cross-shaped connecting plate attached to the opposite side of the paper form is inserted. A pair of paper forms can be held between the presser metal fitting and the connecting plate by inserting a wedge into the bent part of the holding metal fitting that protrudes from the cross-shaped through hole of the connecting plate and fixing it. It can be connected with a hook. In addition, since a cross-shaped through hole is bored in the connecting plate, the insertion angle of the bent part of the presser metal fitting can be rotated by 90 degrees, so the connecting plate can be attached vertically and horizontally as desired. be able to.

When carrying out the present invention, it is preferable that the wedge is connected to the connecting plate via a chain or the like, so that the connecting operation becomes easy and there is no risk of losing the wedge. Further, it is preferable that a plurality of cross-shaped through holes are formed in the connecting plate at predetermined intervals, and in this case, the paper form can be held at a plurality of locations.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the connecting device 1 according to this invention includes a presser metal fitting 3 having a U-shaped bent portion 2;
It includes a substantially rectangular connecting plate 4 and a wedge 5. In the connecting plate 4, opposing sides 6, 6 in the longitudinal direction are bent into a rib shape, and an intermediate portion 7 of the opposing sides 6, 6 is curved to have a dish-like cross section. Fixing portions 9, 9 are formed. Three cross-shaped through holes 10 are bored in the intermediate portion 7 at predetermined intervals along the longitudinal direction. It can be inserted in any direction. Further, the wedge 5 is connected to the connecting plate 4 via a chain 11. Cutout grooves 12, 12 are bored in the joint portion of the paper forms 8, 8 so as to match each other.

In the above configuration, the joint parts of the paper forms 8, 8 are butted against each other, and the longitudinal direction of the connecting plate 4 is turned sideways, and the paper forms 8, 8 are brought into contact with one side of the paper forms 8, 8. Insert the bent part 2 of the presser metal fitting 3 into the notch groove 12 from the opposite side of the connecting plate 4.
into the central cross-shaped through hole 10. and,
The wedge 5 is inserted into the bent part 2 of the presser metal fitting 3 protruding from the cross-shaped through hole 10 of the connecting plate 4 and fixed. As a result, as shown in FIG.
is held between the presser metal fitting 3 and the connecting plate 4, and is firmly connected. Note that the connecting plate 4 is provided on the outside of the paper forms 8, 8, that is, on the side where concrete, mortar, etc. are not poured.

Moreover, as shown in FIG. 3, the longitudinal direction of the connecting plates 4 can be oriented vertically to connect them. In this case, the bent portion 2 is inserted into a groove that intersects with the groove of the cross-shaped through hole 10 into which the bent portion 2 of the presser metal fitting 3 has been inserted in FIG.

Furthermore, as shown in FIG. 4, the connecting angle of the paper forms 8, 8 can be changed in the vertical plane to adapt to the uneven shape of the slope.

Although not shown, the presser metal fitting 3 and the wedge 5
It is also possible to prepare three of each and insert the bent portions 2 of the presser fittings 3 into the three cross-shaped through holes 10 of the connecting plate 4, respectively, so that the paper forms 8, 8 can be held in three places. can. In this case, the paper forms 8, 8 are connected more firmly.

FIG. 5 shows a formwork unit 18 to which the above-mentioned connecting device 1 is applied. This formwork unit 1
8 has a pair of paper forms 8, 8, each paper form 8, 8
The end edges 8a, 8a are bendable.
There are three reinforcing bars 19 between these paper forms 8, 8.
are arranged at predetermined intervals, and the reinforcing bars 19 are made up of two horizontal bars 20, 20, two vertical bars 21,
21 are assembled in a grid shape and welded at their intersections, and both ends of the horizontal reinforcements 20, 20 are bent vertically into an L-shape. Horizontal stripes 20, 2 of paper formwork 8
A clasp 22 is provided at the portion where the bent portions at both ends of 0 come into contact, and this clasp 22 has a spring-like hook in the center of the mounting plate 23, as shown in FIGS. 6 and 7. A notch 25 is formed at the base of the hook 24, and cylindrical ribs 26, 26 are formed at both ends of the mounting plate 23. Then, the hook 24 is inserted from the outside of the paper form 8 through the through hole 27, and the cylindrical ribs 26 are fitted into the round holes 28, 28 provided on both sides of the through hole 27. is attached to the paper formwork 8. Furthermore, horizontal stripes 20 of the reinforcing bars 19 are attached to the hooks 24 that protrude inside the paper form 8.
The bent portions at both ends of the paper formwork 8, 8 are inserted into the reinforcing bar 1.
9, which are pivotally connected. Therefore, the formwork unit 8 can be folded freely by pivoting the bent portions at both ends of the horizontal reinforcement 20 within the hook 24, and can be stacked in large numbers in a folded state and transported to the site. On the other hand, a connecting rod 29 is provided to connect the longitudinal reinforcements 21 of the adjacent reinforcing bars 19 that are located diagonally in the state shown in FIG. 5 when the formwork unit 18 is expanded. is an annular portion 30 formed by bending both ends,
30, and the annular portions 30, 30 are provided with vertical stripes 21,
21, the vertical bars 21, 21 are connected in a spiral shape, and the formwork unit 18 is fixed in an expanded state. By the way, in this formwork unit 18, a pair of paper formworks 8, 8
One place is cut at right angles to the longitudinal direction, and the above-mentioned coupling device 1 according to the present invention is provided at this cut part.

Then, as shown in FIG. 8, the formwork unit 18 is placed on a slope, and the edges 8a of the paper formwork 8 are successively connected by the connecting members 31 to form a formwork 32. be able to. In this case, the formwork unit 18 provided with the connecting device 1 according to the present invention is installed in areas where the slope is uneven, for example, points A and B.
, and the connected portion of the paper form 8 is deformed to fit the uneven shape of the slope. Thereby, it is possible to prevent a gap from forming below the paper form 8.

It should be noted that the connecting device 1 according to the present invention does not need to be installed in the formwork unit 18 in advance; when forming the formwork 32, the paper formwork 8 is cut as appropriate according to the uneven shape of the slope, and the connecting device 1 is attached to that part. Providing a coupling device 1,
The paper form 8 may be deformed to fit the uneven shape.

As explained above, according to the present invention, the bent part of the presser fitting is inserted into the cross-shaped through hole of the paper form and the connecting plate, and the wedge is inserted into the bent part that protrudes from the cross-shaped through hole of the connecting plate. I inserted it and fixed it, so
With a simple operation, the paper form can be clamped between the presser fitting and the connecting plate and firmly connected. Further, since the connecting plate has a cross-shaped through hole, the connecting plate can be attached vertically and horizontally as desired. Furthermore, the connection angle of the paper forms can be changed in the vertical plane to adapt to the uneven shape of the slope.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the coupling device according to the present invention;
3 and 3 are perspective views showing a state in which the paper forms are connected by the same connecting device, FIG. 4 is a front view showing a state in which the connection angle of the paper forms has been changed in a vertical plan view in FIG. 2, and FIG. Fig. 6 is a perspective view of a fastener used in the formwork unit, Fig. 7 is a perspective view of a hook of the fastener, and Fig. 8 is a perspective view of the formwork unit to which the inventive coupling device is applied. FIG. 3 is a perspective view of a formwork formed by a frame unit. DESCRIPTION OF SYMBOLS 1... Connecting device, 2... Bent part, 3... Holding metal fitting, 4... Connecting plate, 5... Wedge, 8... Paper formwork,
10...Cross-shaped through hole, 11...Chain.

Claims (1)

[Claims for Utility Model Registration] (1) A device for connecting paper forms for forming legal frames, comprising a presser metal fitting having a U-shaped bent part, a connecting plate having a cross-shaped through hole, and the presser plate having a cross-shaped through hole. A connecting device for paper forms, comprising a wedge that engages with a bent portion of a metal fitting. (2) Utility model registration The paper form connection device according to claim (1), characterized in that the wedge is connected to the connection plate via a chain or the like. (3) The device for connecting paper forms according to claim (1) or (2), characterized in that the connecting plate has a plurality of cross-shaped through holes spaced apart from each other by a predetermined interval.