JPS6220592Y2 - - 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 been developed to provide a recess on the base side edge and a tapered edge on the tip side corner of the upper and lower opposite sides of the upper and lower presser feet with a U-shaped cross section. A protruding piece is provided in the middle part, and the protruding pieces of the upper and lower presser feet are respectively fitted and pivoted to the upper and lower protruding pieces of the middle part of the tightening rod, and a tapered washer is provided on the tip screw of the tightening rod. By screwing together the upper and lower nuts, and then fitting the horizontal strips into the recesses of several presser feet at the top and bottom, and moving them in the direction of the tightening rod, several presser feet can be operated at the same time. The upper and lower horizontal beams can be set, and the upper and lower presser feet can be pressed and fixed with a slight tightening of the nuts to assemble the formwork, making assembly and dismantling of the formwork simple and quick. This invention relates to a concrete formwork fastening fitting that can be formed accurately and improves work efficiency.

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 collar 2 is provided at the base end. A screw hole 3 is installed in the center of the proximal end surface, flat vertically projecting pieces 4 and 5 are formed by crushing in the middle part, and a screw 6 is installed on the distal side of the projecting pieces 4 and 5. Set up Reference numerals 7 and 8 denote a pair of presser feet that are arranged vertically opposite each other, and have a U-shaped cross section with the base side and the upper and lower opposing sides open, and the presser feet 7 and 8 have arcuate recesses 9 and 10 at the base side edges. , tapered edges 11 and 12 are provided at the corners of the tip side of the upper and lower opposite sides, respectively, and both side projecting pieces 13 are installed at the middle part of the upper and lower opposite sides.
and 14, respectively, by means of pins 15, 16 which fit into the upper and lower protruding pieces 4, 5 of the tightening rod 1 and are inserted through their through holes. Reference numeral 17 denotes a nut provided with a tapered washer 18, and the nut 17 is screwed onto the screw 6 of the tightening rod 1 to constitute the tightening fitting a.

A separator 19 has screws 20 installed at both ends thereof and a stopper 21 at its base end, and a terminal 22 is screwed into the screw 20 up to the stopper 21. A is a weir plate that constitutes the concrete formwork, and through holes 23 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 beam of a pipe with a cross section in which the corners of a regular triangle are formed into an arc shape, and C and D are 3 to be assembled in a pair on the outside. The horizontal beams above and below the square 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 20 at both ends of the separator 19 with terminals 22 into the through holes 23, screw the screw holes 3 of the tightening rod 1 into the protruding parts of the screws 20, and tighten the terminals 22. The weir plate A is held between the collar 2 of the rod 1, and the presser feet 7 and 8 of the clamping fitting a are
Orient it vertically.

Therefore, after arranging the vertical flap members B on the outer surface of the weir plate A, first tighten the nuts 1 on the fastening metal fittings a, which are arranged in an appropriate number in the left and right direction, as shown by the solid line in Fig. 4.
After separating the presser feet 7 outward from the presser feet 7 and 8, the presser foot 7 is rotated clockwise in FIG.
If one corner of the horizontal flap material C is fitted into the recess 9 of the frame, and then the horizontal flap material C is moved inwardly and downwardly, the horizontal flap material C and several presser feet will fit together. 7 rotates integrally in the direction of the arrow in Fig. 4 using the pin 15 as a fulcrum, and the other flat part of the horizontal beam C comes into contact with the vertical beam B, as shown by the chain line, and the two are in contact with each other. Retained.

Next, as shown by the solid line in FIG. 4, one corner of the horizontal flap material D is pressed between the vertical flap material B and the presser foot 8 and lifted while rotating in the direction of the arrow.
The presser foot 8 of several clamping fittings a automatically locks the pin 16.
One corner of the horizontal flap D fits into the recess 10 of the presser foot 8, and the other flat part abuts against the vertical flap B, as shown by the chain line. Therefore, while holding the horizontal bar D in the above-mentioned lifted state,
7, the tapered surface of the washer 18 of the nut 17 and the tapered edges 11, 12 of the presser feet 7, 8
By sliding, presser feet 7 and 8 are attached to pin 1, respectively.
5 and 16 are used as fulcrums to rotate inward to vertically opposing sides, thereby pressing the horizontal beams C and D against the vertical beam B, and using the terminals 22 and pressers 7 and 8 to press the weir plates A and 8. The vertical and horizontal flap materials B, C, and D are sandwiched and tightened and fixed together, and the spacing between the weir plates A on both sides is maintained at a predetermined distance to form a formwork.

Therefore, after pouring concrete in the space surrounded by the weir plate A to construct the concrete wall E, when dismantling the formwork, the nuts 17 should be spaced outward from the unscrewing pressers 7 and 8. Unfasten the presser feet 7 and 8, remove the horizontal flaps D, C, and the vertical flaps B in sequence by operating in the opposite direction to the above, then unscrew the clamping metal a and remove the weir plate A. , the formwork can be dismantled.

Note that the nut 17 and washer 18 may be separated, or the nut 18 may be a butterfly nut.

On the other hand, instead of the separator 19 with the terminal 22,
The same effect is obtained when using a separator with a conical terminal in which a screw hole in the center of the inner surface of a conical terminal with a central bolt protruding outward is screwed onto a screw 20 of a separator 19 up to a stopper 21.

The second embodiment of the present invention shown in FIG. C' and D' are used, and instead of the presser feet 7 and 8 in the above embodiment, the arcuate recesses 9 and 1 are used.
The fastening fitting a' is constructed using presser feet 7' and 8' which are formed in concave portions to engage with the round pipe.

This structure also functions in the same manner as described above, and the formwork can be constructed by tightening the vertical and horizontal flap members B', C', and D'.

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 collar 2 and screw hole 3, a downward hook-shaped hook 3'' is provided at the base.

19'' is a band-shaped separator, with through holes 24 bored in both ends. A'' is a metal weir plate, and a large number of through holes 23'' are arranged in parallel at appropriate intervals on its edge frame.

In this structure, the upper and lower weir plates on both sides
Sandwich the end of the separator 19'' between the edge frames of A'', insert the hooks 3'' of the tightening rod 1'' into the through holes 23'' and 24, and attach the tightening rod 1'' to the weir plate A. When hooked onto the edge frame of ``, the hook 3'' of the tightening rod 1'' connects the upper and lower weir plates A'' and the separator 19'' together, and the tightening fitting a'' connects the weir plate with the separator 19''. Since it is attached to A'', the formwork can then be assembled by operating in the same manner as above.

In addition, after sandwiching the ends of the separator 19″ between the edge frames of the upper and lower weir plates A″ on both sides,
3" and 24, and use the U clips to connect the upper and lower weir plates A" and the separator 19'' together to stand up the weir plate A''. Even if the hook piece 3'' of the clamping rod 1'' is inserted into the through hole 23'' and the clamping rod 1'' is hooked on the edge frame of the weir plate A'', the clamping fitting a'' will not be attached to the weir plate with the separator 19''.
Since it is attached to A'', the formwork can then be assembled by operating in the same manner as above.

In the fourth embodiment of the present invention shown in FIG. 7, the base end screw 26 of the hook-shaped bent hanging rod 25 is screwed into the screw hole 3 of the tightening rod 1 of the fastening fitting a in the first embodiment. be.

This structure can also be used for the metal weir plate A'' to assemble a formwork in the same manner as the fastening fitting a'' in the third embodiment.

To explain the structure of the fifth embodiment of the present invention shown in FIG.
is the tightening rod, and instead of the collar 2 and screw hole 3 at the base end of the tightening rod 1 in the first embodiment, the base end is bifurcated into two.
An inverted U-shaped guide metal 3 shaped like a nail puller's head is fitted and fixed into the tip of the two forks 2. A separator 19 has heads 27 at both ends, and a terminal 22, which is secured by a stopper 21, is fitted at a slightly inner position.

In this structure, the through hole 23 of the weir plate A
After inserting the end of the separator 9 into the
When the separator 19 is fitted into the part between the separator 19 and the terminal 22 and lowered, the separator 19 is pulled out by the guide metal 3 guiding the head 27, and the separator 19 is inserted between the head 27 of the separator 19 and the terminal 22. Since the guide metal 3 is clamped and the clamping metal fitting a is attached to the weir plate A with the separator 19, 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. By simply inserting the horizontal beams from below between the vertical beams and the lower presser foot of the clamping fitting, you can install a pair of vertical horizontal beams that are parallel to each other, instead of using a pair of horizontal beams as in the past. There is no need to connect the two pieces of wood together with several fasteners or to disassemble them, which saves 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. After that, all you have to do is screw in the nuts of each tightening bracket and place the tapered washers against the tapered edges of the upper and lower presser feet to tighten them. In addition to being efficient as the presser feet of several clamping fittings operate together with the nut, the length of screwing in and unscrewing the nut is short, and there is little rotational operation, making it easy to assemble and dismantle the formwork. It can be done quickly and there is no over-tightening or uneven tightening of the nuts, so even non-skilled craftsmen can always tighten them evenly and form concrete surfaces with high accuracy by applying the horizontal beams over the entire area. This improves work efficiency.

Moreover, since the upper and lower presser feet have a U-shaped cross section,
Not only can it be made sturdily using thin iron plates, but the upper and lower presser feet are individually fitted to the upper and lower protruding pieces of the tightening rod and are pivoted, so the same presser foot can be used for the upper and lower pressers. It is convenient to work with, has a simple structure, can be manufactured easily and inexpensively, operates light and smoothly, and is firmly fixed.

[Brief explanation of the drawing]

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 slope view. , Fig. 4 is an explanatory side sectional view showing the state of the concrete formwork assembly, and Fig. 5 is the second embodiment of the present invention.
A side sectional view of the concrete formwork assembled using the fastening fittings according to the embodiment, and FIG. 6 is a side sectional view of the concrete formwork assembled using the fastening fittings according to the third embodiment of the present invention. 7 is a side sectional view of a concrete form assembled using the fastening fittings according to the fourth embodiment of the present invention, and FIG. 8 is a side sectional view of the concrete form according to the fifth embodiment of the present invention. FIG. 2 is a side sectional view of the concrete formwork assembled using fastening fittings. 1... Tightening rod, 4, 5... Projecting piece, 6... Screw, 7, 8... Presser foot, 9, 10... Recess, 1
1, 12...Tapered edge, 13, 14...Protrusion piece,
15, 16...Pin, 17...Natsuto, 18...
Taper washer, 19... Separator, 20...
Screws, A...dam 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, protruding pieces are formed on the top and bottom of the middle part, screws are provided at the tip, and the base side and the upper and lower opposing sides are open, with no U-shaped cross section. In addition, between the protrusions at the intermediate portions of the upper and lower opposing sides of the upper and lower presser feet, the edges on the base side are provided with recesses into which the horizontal flaps fit, and the corners on the tip sides of the upper and lower opposing sides are formed into tapered edges. are respectively fitted onto the upper and lower protruding pieces of the clamping rod and pivotally connected by pins, and the screws of the clamping rod are screwed with nuts provided with tapered washers that connect to the tapered edges of the upper and lower presser feet. Concrete formwork fastening fittings.