JPS636367Y2 - - Google Patents

Description

[Detailed description of the invention] A conventional tightening metal fitting with a structure in which the center hole of a presser washer, which has recesses that fit into the upper and lower side beams on the upper and lower edges of the weir plate side, is fitted into a tightening rod. In this case, the horizontal beams used in pairs (upper and lower) are connected together with several fastening fittings so that a small gap is formed, and
In order to assemble the horizontal beams on the outside of the vertical beams by fitting several tightening rods into the small gaps between the integrally connected horizontal beams and assembling the horizontal beams on the outside of the vertical beams. In addition to requiring a lot of effort and time to connect and disassemble the materials,
Difficult to handle.

On the other hand, because the transition length of the presser washer is long, in the case of a screw-tightening method, the nut feed is slow and requires many rotation operations, and it takes a lot of time to assemble and dismantle the formwork, reducing work efficiency. bad.

In addition, in the case of the wedge-based tightening method, the force transmitted by driving the wedge is not smooth, and the wedge floats due to vibration, causing the tightening to loosen.

Further, both of the above-mentioned types had drawbacks such as excessive tightening or uneven tightening at the tightening portion, and unevenness on the concrete surface, making it impossible to form the concrete surface accurately.

Therefore, in order to eliminate the above-mentioned defects, the present invention has developed an intermediate part of the upper and lower presser feet, which is equipped with a concave part on the base edge and a contact surface on the distal end of the upper and lower opposing edges. The clamping rod is pivotally mounted on the upper and lower protrusions of the mounting bracket, and a latch that engages and disengages between the upper and lower presser feet is fitted to the tip of the clamping rod so as to be movable from side to side. By fitting several presser feet into the recesses and moving them toward the tightening rod, several presser feet can be operated simultaneously to set the upper and lower crosspieces, and the latch can be moved. This allows the formwork to be assembled by fixing the upper and lower presser feet, making it possible to assemble and dismantle the formwork quickly and easily.The concrete mold also allows for accurate formation of the concrete surface, improving work efficiency. This relates to frame tightening fittings.

To explain the structure of the first embodiment of the present invention shown in FIGS. 1 to 4, a indicates a concrete formwork clamping fixture, 1 is a clamping rod thereof, and a screw hole 2 is provided in the center of the base end surface. is installed, and both side mounting brackets 3 are made to protrude vertically from the middle part and are fixed with pins 4.
Reference numerals 5 and 6 designate a pair of presser feet arranged vertically symmetrically, with arc-shaped recesses 7 and 8 provided on the base side edges and abutment surfaces 9 and 10 provided on the distal ends of the upper and lower opposing edges, respectively. The intermediate portions of pins 5 and 6 are fitted between the upper and lower protrusions of the mounting brackets 3 on both sides, respectively, and the pins 11,
Pivotally connected by 12. 13 is a U-shaped latch that engages and disengages from the contact surfaces 9 and 10 of the presser feet 5 and 6;
A central shaft rod 15 with 4 is slidably fitted into a horizontal hole at the tip of the tightening rod 1 to constitute a tightening fitting a.

Reference numeral 16 designates a separator, which has screws 17 at both ends and a stopper 18 at its base end, and a terminal 19 is screwed into the screw 17 up to the stopper 18. A is a weir plate that constitutes the concrete formwork, and through holes 20 are bored at appropriate locations. B is a triangular pipe to be placed on the outer surface of weir plate A, that is, a vertical flap member of a pipe whose cross section has an arcuate corner of a regular triangle, and C and D are triangular pipes that are combined in a pair on the outside. The horizontal beams above and below the pipe, E indicates the concrete wall.

Next, how to use the fastener will be explained. Stand up the weir plates A on both sides, insert the screws 17 at both ends of the separator 16 with terminals 19 into the through holes 20, and screw the screw holes 2 of the clamping rod 1 into the protruding parts of the screws 17 to connect the terminals 19 and the clamping rod. The weir plate A is held between the two clamps 1 and 1, and the presser feet 5 and 6 of the clamping fitting a are directed in the vertical direction.

Therefore, after arranging the vertical beams B on the outer surface of the weir plate A, one corner of the horizontal beams C was placed in the recess 7 of the presser foot 5 of the clamping fittings a, which were arranged in a suitable number in the left-right direction. When they are fitted together and then the horizontal flap material C is moved inward and downward, the horizontal flap material C and several presser feet 5 move in the direction of the arrow in FIG. 4 in an integrated state with the pin 11 as a fulcrum As it rotates, the other flat part of the horizontal flap member C comes into contact with the vertical flap member B and is held in this abutting state as shown in FIG.

Next, as shown in Fig. 4, one corner of the horizontal flap material D is fitted into the recess 8 of the presser foot 6 of the clamp a, and then the horizontal flap material D is inserted inside. If you lift it upward, the horizontal piece D and several presser feet 6 will be removed.
rotates integrally in the direction of the arrow in FIG. 4 about the pin 12 as a fulcrum, and the other flat part of the horizontal flap member D comes into contact with the vertical flap member B as shown in FIG. Therefore, while holding the cross member D in the above-mentioned lifted state, the latch 13 is moved in the direction of the clamping rod 1 so that the contact surfaces 9 of the presser feet 5 and 6 are 10, the presser feet 5 and 6 are fixed by the locking metal 13, and the terminal 19 and the presser feet 5 and 6 sandwich the weir plate A and the vertical and horizontal flap materials B, C, and D. They are tightened and fixed together, and the spacing between the weir plates A on both sides is maintained at a predetermined value to form a formwork.

Therefore, when dismantling the formwork after constructing the concrete wall E by pouring concrete in the space surrounded by the weir plate A, the locking metal 13 is moved in the opposite direction to the above, and the second Presser feet 5 and 6 as shown by chain lines in the figure.
Release the presser feet 5 and 6 from between them, remove the horizontal pieces D and C, and the vertical pieces B by operating in the opposite direction to the above, and then screw out the clamping metal a. Weir plate A
Once removed, the formwork can be dismantled.

On the other hand, instead of the separator 16 with the terminal 19 described above, a separator with a conical terminal is obtained by screwing the screw hole at the center of the inner surface of the conical terminal with the center bolt protruding outward to the screw 17 of the separator 16 up to the stopper 18. When using , it works in the same way as above.

In the second embodiment of the present invention shown in FIG. 5, instead of the vertical and horizontal flaps B, C, and D of the triangular pipe in the above embodiment, the vertical and horizontal flaps B' and C of the round pipe are ', D', and instead of the presser feet 5, 6 in the above embodiment, the arcuate recesses 7, 8 are used.
a presser foot 5' formed in a recess that engages with a round pipe;
6' is used to construct the fastening fitting a'.

In this structure as well, it works in the same manner as above, and the formwork can be constructed by tightening the vertical and horizontal flaps B', C', and D' to the weir plate A.

To explain the structure of the third embodiment of the present invention shown in FIG. 6, a'' indicates a tightening fitting, 1' is its tightening rod, and the proximal end of the tightening rod 1 in the first embodiment. In place of the screw hole 2, a downward hook-shaped hook 21 is provided at the base.

Reference numeral 16' denotes a band-shaped separator, with through holes 22 bored at both ends. A' is a metal weir plate, and its edge frame has a large number of through holes 20' lined up at appropriate intervals.

In this structure, the upper and lower weir plates on both sides
Sandwich the end of the separator 16' between the edge frames of A', insert the hanging pieces 21 of the clamping rod 1' into the through holes 20' and 22, and attach the clamping rod 1' to the weir plate A'. When hooked onto the edge frame, the hook piece 21 of the tightening rod 1' connects the upper and lower weir plates A' and the separator 16' together, and the tightening fitting a'' connects to the weir plate A' with the separator 16'. Once installed, the formwork can then be assembled by operating in the same manner as described above.

In addition, after sandwiching the end of the separator 16' between the edge frames of the upper and lower weir plates A' on both sides,
0', 22, and connect the upper and lower weir plates A' and separator 16' together with the U clips to stand up the weir plate A'. Even if the hook piece 21 of the clamping rod 1' is inserted into the through hole 20' and the clamping rod 1' is hooked on the edge frame of the weir plate A', the clamping fitting a'' is attached to the weir plate with the separator 16'.
Since it is attached to A', the formwork can then be assembled by operating in the same manner as above.

A fourth embodiment of the present invention shown in FIG. 7 is one in which the base end screw 23 of a hook-shaped bent hanging rod 21' is screwed into the screw hole 2 of the tightening rod 1 of the fastening fitting a in the first embodiment. It is.

This structure can also be used for the metal dam plate A' to assemble a formwork, similar to the clamping fitting a'' in the third embodiment.

To explain the structure of the fifth embodiment of the present invention shown in FIG.
is a tightening rod, in place of the screw hole 2 at the base end of the tightening rod 1 in the first embodiment, the base is formed into a bifurcated 2'', and a nail puller's head is formed in the tip of the bifurcated 2''. Downfall U
A shape guide metal 24 is provided. 16'' is a separator, which has heads 25 at both ends, and a terminal 19'', which is secured by a stopper 18, is fitted at a slightly inner position.

In this structure, the through hole 20 of the weir plate A
After inserting the end of the separator 16'' into the
When the separator 16'' is fitted into the part between the separator 16'' and the terminal 19'' and lowered, the head 25 is guided by the guide metal 24, and the separator 16'' is pulled out. Since the weir plate A and the guide metal 24 are sandwiched and the clamping metal fitting a is attached to the weir plate A with the separator 16'', the formwork can then be assembled by operating in the same manner as described above.

In the present invention, the concrete formwork clamping fitting is configured as described above, so that the upper horizontal beam is fitted from above into the recess of the upper presser foot of the clamping bracket and is pushed inward and downward, and the lower horizontal beam is pushed inwards and downwards. The material is fitted from below into the recess of the lower presser foot of the clamping fitting, and lifted inward and upward.
After that, by simply inserting the latch from the side between the contact surfaces of the upper and lower presser feet, the upper and lower presser feet can be fixed and a pair of horizontal bars arranged vertically can be installed. There is no need to connect horizontal beams used in pairs with several fastening metal fittings or to disassemble them, thereby saving time and effort.

Furthermore, by fitting the crossbeams into the recesses of the presser feet of several clamping fittings and moving them in the direction of the clamping rod, the pressers of the several clamping metal fittings can be inserted into the crossbeams. The side beams can be installed by rotating integrally with the latches, and then all you have to do is move the latches, so you can attach and remove the latches, and use the latches to fix and release the upper and lower pressers. This makes it extremely easy to assemble and disassemble the formwork, and since the locking position of the horizontal beams is always constant without tightening the upper and lower pressers, the horizontal beams can be moved over the entire surface of the formwork. The material contacts the vertical beam members evenly, and there is no deformation of the weir board due to over-tightening or uneven tightening of the formwork, unlike in the past. Therefore, even an unskilled worker can always tighten and fix the formwork evenly and form the concrete surface with high precision, improving work efficiency.

In addition, it has a simple structure, can be manufactured easily and inexpensively, operates light and smoothly, and is securely and firmly fixed.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of a concrete form assembled using a fastening fitting according to the first embodiment of the present invention, Fig. 2 is a front view of the fastening fitting, and Fig. 3 is a sloped surface. Figure 4 is an explanatory side cross-sectional view showing the state of concrete formwork assembly, and Figure 5 is a side cross-sectional view of the concrete formwork assembled using the fastening fitting according to the second embodiment of the present invention. Figure 6 is a side cross-sectional view of a concrete form assembled using the tightening fittings according to the third embodiment of the present invention, and Figure 7 is the tightening according to the fourth embodiment of the present invention. Side sectional view of concrete formwork assembled using metal fittings, No. 8
The figure is a side cross-sectional view of a concrete form assembled using a fastener according to a fifth embodiment of the present invention. 1... Tightening rod, 3... Mounting metal, 5, 6... Presser foot, 7, 8... Recess, 9, 10... Touching surface, 1
1, 12...Pin, 13...Latching metal, 15...Center rod, 16...Separator, A...Weir plate,
C, D... Horizontal lumber.

Claims (1)

[Scope of utility model registration request] The base of the tightening rod is equipped with a mechanism for attaching it to the weir plate with a separator, the intermediate part is provided with a mounting bracket that protrudes up and down, and the edge of the base is formed with a recess into which the horizontal material fits. The intermediate parts of the upper and lower presser feet, each having a contact surface provided at the tip end of the upper and lower opposing edges, are pivotally attached to the upper and lower protrusions of the above-mentioned mounting bracket using pins, and the contact surfaces of the upper and lower presser feet are engaged and disengaged. A concrete formwork fastening fixture in which a central shaft rod of a locking rod is slidably fitted into a horizontal hole at the tip of the tightening rod.