JPH0240682Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a formwork connection fitting for interconnecting formworks in concrete frame construction work.

[Technical background of the invention and its problems] When constructing concrete frames for buildings, factories, and other buildings, formwork is constructed in accordance with the shape of the frame.
Recently, in order to reduce the cost of frame construction, standard and standardized formwork is used, and adjacent formworks are connected with so-called U-clip fittings.
It is fixed with so-called horizontal bata materials arranged horizontally. However, since the connection using the U-clip metal fittings simply clamps the reinforcing edge around the formwork, the connection force is not sufficient and there are cases where the U-clip fittings come off.

In order to eliminate such drawbacks, the present applicant proposed an improved formwork and its connecting fittings in Japanese Utility Model Application Publications No. 60-121060 and No. 60-121061. As shown in FIG. 4, a hollow reinforcing frame 12 is provided around a panel-shaped form body 11, and the inner and outer walls of this reinforcing frame 12 are recessed into a substantially V-shape to form a connecting groove 13. and formwork 10. On the other hand, the connecting fittings 15 are connected by sandwiching the reinforcing frames 12 that contact each other when the formworks 10 are arranged adjacent to each other. That is, the main clamping body 17 and the sub-clamping body 18 are formed in a substantially L-shape when viewed from the plane with the engagement protrusions 16 that fit into the connecting grooves 13 protruding from the inside of their tips. Then, the bases of the main clamping body 17 and the sub clamping body 18 are overlapped with each other, and a wedge-shaped fastening body 19 is passed through the overlapping part along the vertical direction.
The engaging protrusions 16 are strongly drawn together and the reinforcing frames 12 are sandwiched between each other. In addition, 20 is a removal prevention pin.

According to such a connecting fitting 15, a strong connection between the formworks 10 can be obtained due to its clamping action, and work efficiency can be improved. However, the fastening bodies 19 are arranged in the vertical direction, and the connecting fittings 1
5 itself protrudes vertically, so when installing the horizontal thick material 21, it must be spaced a certain distance from the connecting fitting 15, making it difficult to assemble it properly to maintain strength. Something happened.

[Purpose of the invention] This invention was devised to eliminate the conventional drawbacks mentioned above, and its purpose was to eliminate the parts that protrude in the vertical direction when the formwork is connected to each other,
The object of the present invention is to enable the assembly of a formwork in which a predetermined strength can be maintained by making it possible to arrange horizontal thick members close to each other.

[Summary of the invention] Therefore, this invention aims at fastening by wedge action, but the fastening body is press-fitted and arranged horizontally, and the part of the metal fitting itself that protrudes in the vertical direction is eliminated. .

That is, specifically, a formwork connecting fitting that connects and fixes formworks by arranging formworks, each of which has a reinforcing frame around which a connecting groove is formed, adjacent to each other and fastening the reinforcing frames to each other. The main clamping body and the sub clamping body are substantially L-shaped when viewed from above, have an engaging protrusion projecting from the inner side of the tip to fit into the connecting groove, and are pivotally connected to each other in an opening/closing manner at the base. and a fastening that is forcibly press-fitted into the press-fitting part provided on either the main clamping body or the sub clamping body along the horizontal direction in the opening/closing direction of the main clamping body or the sub clamping body, and causing the main clamping body and the secondary clamping body to close and oscillate each other. It is characterized by having a body.

[Embodiment of the invention] An embodiment of the invention will be described below with reference to FIGS. 1 to 3.

Reference numeral 1 shown in the figure is a main clamping body, and 2 is a sub clamping body, both of which are approximately L when viewed from the plane.
exhibits a glyph shape. On the inside of the tip, there is a connection groove 13 of the reinforcing frame 12 provided around the formwork 10 described above.
Engagement protrusions 3 and 4 are provided in a protruding manner, and are pivotally supported at the base by a shaft pin 5 such as a rivet, so that they are pivotally connected to each other in an opening and closing manner.

The main holding body 1 has a side plate that connects the upper plate and the lower plate, which are approximately L-shaped when viewed from the top, at their backs, and the cross section is formed into an approximately U-shape, and is engaged with the inside of the upper plate and the lower plate. A protrusion 3 is provided in a protruding manner. On the other hand, the sub clamping body 2 is thicker than the upper plate and lower plate of the main clamping body 1 and is formed into a substantially L-shaped plate shape when viewed from above, and its base is connected to the upper plate and the lower plate of the main clamping body 1. It is inserted between the bases of the lower plates. Then, both the main clamping body 1 and the sub clamping body 2 are pivoted and opened and closed by the shaft pins 5 inserted into their respective bases, and as they are opened and closed, the respective engaging protrusions 3 and 4 are separated from each other. approach.

A fastening body 6 that attempts to close the main clamping body 1 and the secondary clamping body 2 is pressed against the base surface of the main clamping body 1 and the secondary clamping body 2, respectively, and is attached to either the main clamping body 1 or the secondary clamping body 2. It is forcibly press-fitted into the formed press-fitting part 7. That is, as shown in the figure, the press-fitting part 7 is formed in a protruding shape at the base of the main clamping body 1, and includes an L-shaped piece with a substantially L-shaped cross section that protrudes from the lower plate, and an L-shaped piece that protrudes from the upper plate. It is preferably formed by integrating the L-shaped piece and the flat piece by welding or the like at the joining portion of the L-shaped piece and the flat piece. When the press-fitting part 7 itself is combined with the sub-holding body 2, the width is wide at the side of the sub-holding body 2, and gradually becomes narrower as it reaches the side plate of the main holding body 1. The illustrated fastening body 6 has a press-fitting part 7
When the press-fitting part 7 is press-fitted, the fastening surface that contacts the inner surface of the press-fitting part 7 is inclined with respect to the contact surface that contacts the base surfaces of the main clamping body 1 and the sub-clamping body 2, respectively. The overall plane basically has a substantially triangular wedge shape. At that time, the inclined surface of the fastening body 6 itself is
The fastening body 6 is arranged so as to substantially correspond to the inclined surface on the inner surface of the press-fitting part 7, so that the fastening body 6 can be press-fitted into the press-fitting part 7 smoothly.

In the figure, reference numeral 8 denotes a slip-out prevention end protruding from the press-fitting end of the fastening body 6. Further, reference numeral 9 denotes an actuated tip protruding from the base of the sub-holding body 2, which facilitates the swinging motion of the sub-holding body 2 obtained by the contact surface of the fastening body 6 press-fitted into the press-fitting portion 7.

The engaging protrusion 3 of the main clamping body 1 and the engaging protrusion 4 of the sub clamping body 2 almost fit into the concave shape of the connecting groove 13 formed in the reinforcing frame 12 of the formwork 10, as described above. However, if there is a change in the shape of the connecting groove 13, it will have a convex shape corresponding to this change. Furthermore, although the main clamping body 1 is formed in a groove shape and the sub clamping body 2 is formed in a flat plate shape, the main clamping body 1 may be formed in a flat plate shape and the sub clamping body 2 may be in a groove shape. Further, the press-fitting portion 7 may not be formed on the main holding body 1 but may be formed on the sub-holding body 2.

Next, when this is used, the formwork 10 is assembled and arranged according to the predetermined design, and the formwork 10 arranged adjacently is
The main clamping body 1 and the sub clamping body 2 are arranged so as to sandwich the reinforcing frame 12 which is in contact with each other (see FIG. 3). Then, the fastening body 6 is forcibly press-fitted into the press-fitting part 7, and the main clamping body 1 and the sub-clamping body 2 are swung so as to close each other by the wedge action obtained by the inclined surface of the fastening body 6. Accordingly, the engaging protrusion 3 of the main clamping body 1 and the engaging protrusion 4 of the sub-clamping body 2 fit into the connecting groove 13 of the reinforcing frame 12, and the reinforcing frames 12 are fastened together so that they are adjacent to each other. The formwork 10 is assembled and connected (see FIG. 2). Next, the horizontal thick timbers 21 are arranged,
At that time, even if it is located close to this devised metal fitting,
1 can be installed, the horizontal frame of the formwork 10 with a predetermined strength is completed, and concrete material is poured.

[Effect of the invention] This invention is constructed as described above, and when the formwork 10 having the reinforcing frame 12 surrounding the reinforcing frame 12 in which the connecting groove 13 is formed is placed adjacently, the reinforcing frame 12 is fitted into the connecting groove 13. The reinforcing frames 12 can be mutually fastened by the fastening action of the main clamping body 1 and the sub-clamping body 2 having the engaging protrusions 3 and 4, and by fastening, the formwork 10 can be connected and fixed.

At that time, the main clamping body 1 and the sub clamping body 2 are fastened together by forcing the press-fit part 7 provided on either the main clamping body 1 or the sub clamping body 2 along the horizontal direction in the opening/closing direction thereof. Because the fastener 6 is press-fitted and closes and oscillates the main clamping body 1 and the sub-clamping body 2,
There is no portion of the main clamping body 1 and the sub clamping body 2 that protrudes in the vertical direction after they are fastened. Therefore, as shown in Fig. 2, there is no problem in placing the horizontal thick material 21 close to the fastening position using this devised fitting, and the placement position of the horizontal thick material 21 is adjusted to maintain strength. Even if there is a specific instruction, it is possible to respond to it and carry out appropriate assembly.

In addition, since the main clamping body 1 and the sub-clamping body 2 are pivotally connected to each other in an opening/closing manner, even if the main clamping body 1 and the secondary clamping body 2 are closed and oscillated by forcing the fastening body 6 into the Demonstrates strong fastening force without being separated or dismantled.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of this invention, with Figure 1 being an exploded perspective view, Figure 2 being a perspective view in use, Figure 3 being a plan view, and Figure 4 being an exploded perspective view. It is a perspective view of a conventional example. DESCRIPTION OF SYMBOLS 1... Main holding body, 2... Sub-holding body, 3... Engaging protrusion, 4... Engaging protrusion, 5... Shaft pin, 6... Fastening body, 7... Press-fitting part, 8... ...Ejection prevention end, 9...
Actuated tip, 10...Formwork, 11...Formwork body,
12... Reinforcement frame 12, 13... Connection groove, 15...
Connecting fitting, 16... Engaging protrusion, 17... Main clamping body, 18... Secondary clamping body, 19... Fastening body, 20...
... Pull-out prevention pin, 21... Thick horizontal material.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A formwork in which formworks each having a reinforcing frame around which a connecting groove is formed are placed adjacent to each other, and the formworks are connected and fixed by fastening the reinforcing frames to each other. When viewed from above, the connecting fittings have an almost letter-like shape,
A main clamping body and a sub-clamping body, each having an engaging protrusion that fits into the connecting groove protrudingly provided on the inner side of the tip, and which are pivotally connected to each other in an opening/closing manner at the base;
The fastening body is forcibly press-fitted into the press-fitting part provided on either one of the sub-japping bodies along the horizontal direction in the opening/closing direction thereof, and closes and oscillates the main clamping body and the auxiliary clamping body with respect to each other. Characteristic Formwork Connecting Fittings 2. The main clamping body is formed into a substantially U-shaped cross section by integrating the side plates that connect the upper plate and the lower plate at their backs, which are approximately L-shaped when viewed from the top. board,
An engaging protrusion is provided on the inside of the lower plate, and an approximately L-shaped piece from which the base of the lower plate protrudes is joined to a flat piece from which the base of the upper plate protrudes. A formwork connecting fitting according to claim 1, which is a press-fitting part. 3. The type according to claim 1 or 2 of the utility model registration claim, in which the fastening body basically has a substantially triangular wedge shape, and a slip-out prevention end is protruded at the tip of the press-fit side. Frame connection fittings.