JPH0524798U - Concrete formwork assembly metal fittings - Google Patents

Abstract

(57) [Summary] [Structure] A washer 1 is integrally formed with a pair of left and right reinforcing protrusion ribs 6 and 7 for guiding the wedge plate 2 slidably only in the washer length direction. The upper end corners of the inner vertical wall portions 6d and 7d of the wedge plate 2 are projectingly deformed toward the space between the projecting ribs 6 and 7 to form the wedge plate slip-out preventing tongue portions 11a and 11b.
Concrete formed by fitting the tongue pieces 11a and 11b into a pair of left and right recessed grooves 12a and 12b which are formed in parallel with the wedge driving direction without penetrating in the plate thickness direction on the left and right side surfaces of the Formwork fittings. [Effect] The strength reduction of the wedge plate 2 can be suppressed. or,
Due to the high strength of the tongue pieces 11a, 11b themselves and the support of the tongue pieces by the curved ribs 6, 7 having no free ends, the concave grooves 12a, 12 on the wedge plate side are formed.
It is possible to reliably maintain the shallow fitting state between the b and the tongue pieces 11a and 11b.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention consists of a combination of a washer and a wedge plate that come into contact with butter material, and a rod-shaped main body for clamping a formwork, which is connected to the concrete formwork plate via a separator or the like for maintaining a space between the concrete formwork plates. The present invention relates to a metal fitting for assembling a concrete form frame by fastening a butter material applied to the outside of the concrete form frame plate to the form frame plate.

[0002]

[Prior Art]

 The conventional metal fittings for assembling concrete formwork of this type are configured so that the washer and the wedge plate are connected to each other by a chain or the like so that the washer and the wedge plate are not separated from each other. . However, when transporting or storing a large number of metal fittings collectively, the chains and the like are entangled with each other and it takes time to separate them, and when the wedge plate is driven, the chains and the like become an obstacle and work efficiency decreases. Was there.

In order to eliminate such inconvenience, for example, as disclosed in Japanese Utility Model Laid-Open No. 60-191634, a washer is formed in a U-shaped cross section and is fitted between both side wall portions thereof. Long holes in the wedge driving direction are formed in the wedge plate and the both side wall portions, and pins penetrating between the long holes allow the wedge plate and the washer to be slidable only back and forth within a necessary range. A metal mold for assembling concrete formwork, which is formed by joining together, has been considered.

[0004]

[Problems to be solved by the device]

 However, in the conventional chainless coupling type metal fittings as described above, not only the strength of the wedge plate is significantly reduced due to the long hole provided in the wedge plate, but also the width of the washer material contact surface of the washer becomes extremely small, which is unstable. However, the assembled concrete formwork had a very serious defect that the safety was lowered, and therefore it could not be put to practical use.

[0005]

Means for Solving the Problems In order to solve the above-mentioned conventional problems, the present invention comprises a combination of a washer and a wedge plate that abut against a flap material. On the side, the wedge plate is slidably guided only in the length direction of the washer, at least at an intermediate position between the through hole of the body for tightening the frame provided in the washer and one end of the washer length direction. A pair of left and right reinforcing protruding ribs are integrally formed, and the upper corners of the inner vertical walls of both protruding ribs are projected and deformed toward the space between the protruding ribs to form a pair of left and right tongue pieces. A concrete mold formed by fitting the tongue pieces into a pair of left and right concave grooves formed in parallel to the wedge driving direction without penetrating in the plate thickness direction on both left and right sides of the wedge plate and closing both ends. It proposes a frame assembly fitting.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 to 5, 1 is a washer and 2 is a wedge plate. As shown in FIG. 1 and FIG. 4, the washer 1 has bent member detachment preventing bent portions 3 and 4 formed at both ends in the lengthwise direction of the strip-shaped iron plate, and has a rod-like shape for clamping the mold at a substantially central position in the lengthwise direction. A through hole 5 is formed in the main body, and a pair of left and right reinforcing protruding ribs 6 and 7 which are bent toward the wedge plate contacting side over substantially the entire length direction are integrally formed.

As shown in FIG. 1, the pair of left and right projecting ribs 6 and 7 includes front half portions 6 a and 7 a on the side of the obliquely bent portion 3 with respect to the through hole 5 and a side of the right bent portion 4 with respect to the through hole 5. The rear half portions 6b and 7b of the through hole 5 are continuously integrated by the arcuate portions 6c and 7c on both sides of the through hole 5, and the inner vertical wall portions 6d and 7d of the front half portions 6a and 7a are the washer lengths. The wedge plate 2, which is formed in a straight line parallel to the vertical direction and has a bottom portion fitted between the inner vertical wall portions 6d and 7d on both sides, can be slidably guided in the washer length direction. Further, the latter half portions 6b, 7b are provided with wedge plate guide portions 6e, 7e for guiding the wedge plate 2 at a position near the through hole 5, and these wedge plate guide portions 6e, 7e are shown in phantom lines in FIG. It is also possible to make a sliding contact with the left and right side surfaces of the bottom side of the wedge plate 2 as shown by. As shown in FIG. 2, outside the two curved ribs 6 and 7, flared material contact surfaces 9a and 9b which are flush with the butter material contact surface 8 between the two curved ribs 6 and 7 are formed. The horizontal projecting portions 10a and 10b are left.

As shown in FIGS. 1 and 2, the upper and lower corner portions of the inner vertical walls 6 d and 7 d of the pair of left and right curved ribs 6 and 7 project toward both curved ribs 6 and 7. A pair of left and right tongue pieces 11a and 11b configured by being deformed are provided. As shown in FIGS. 3 and 5, a concave groove (not penetrating in the plate thickness direction) on which the pair of left and right tongue pieces 11a and 11b are fitted is formed on both left and right side surfaces of the bottom portion of the wedge plate 2. ) 12a, 12b are formed over the entire length by a forging method or a cutting method, and before being combined with the washer 1, one side of the concave grooves 12a, 12b near the tip of the wedge plate (the side with a narrow vertical width) as shown in FIG. The closing portion 13 is formed at one end of each of the recessed grooves 12a and 12b by a method such as punching the portion. The closing portion 13 may be formed only in one of the concave grooves 12a and 12b.

The washer 1 and the wedge plate 2 are connected as follows. That is, as shown in FIG. 4, the rear end side (wider vertical width side) bottom part of the wedge plate 2 is fitted between the rear half portions 6b and 7b of both the protruding ribs 6 and 7, and the wedges 2 and 7b are engaged with each other. The plate 2 is slid in the direction opposite to the driving direction between the front half portions 6a, 7a of the protruding ribs 6, 7. As a result, as shown in FIG. 5, the tongue pieces 11a and 11b are fitted in the left and right concave grooves 12a and 12b of the wedge plate 2. Then, with the rear end of the wedge plate 2 protruding from the end of the washer 1 on the side of the obliquely bent portion 3, a punch is formed on one side of the recessed grooves 12a, 12b at a position near the rear end of the wedge plate 2. The closing portion 14 is also formed at the other ends of the concave grooves 12a and 12b by hitting or the like. Of course, the closing portion 14 may also be formed in only one of the concave grooves 12a and 12b.

By closing both ends of the recessed grooves 12a and 12b (or one of the recessed grooves) with the closing portions 13 and 14 as described above, the wedge plate 2 has the tongue pieces 11a and 11b. The washer 1 is slidably connected to the washer 1 in the wedge driving direction only within a range in which it can slide within 2a and 12b. At this time, as shown in FIG. 4, when the wedge plate 2 is moved backward to the retracted limit position where the wedge plate tip side closed portion 13 contacts the tongue piece 13, the wedge plate is placed on the through hole 5 of the washer 1. It is necessary to configure it so that 2 is not applied.

The concrete form clamp fittings assembled as described above can be used as shown in FIG. That is, the washer 1 is fitted into the rod-shaped main body 15 for clamping the formwork, which is connected to the concrete formwork plate via the separator for maintaining the space between the concrete formwork plates, using the through hole 5, and The washer 1 is brought into contact with the outside of the flaps 16 and 17 arranged adjacent to both sides of the rod-shaped body 15 between the obliquely bent portion 3 and the right-angled bent portion 4. Then, as shown in FIG. 4, the wedge plate 2 which has been retracted to the retracted limit position is driven in the length direction of the washer 1, and the wedge plate 2 is pressed into the wedge hole 18 of the rod-shaped main body 15 from the tip end portion. Thus, the washer 1 is pressed against the flap members 16 and 17 to assemble the concrete form. At this time, the bottom surface (thickness surface) of the wedge plate 2 can be pressed into contact with the surface between the curved ribs 6 and 7 of the washer 1 so that the width of the recessed grooves 12a and 12b and the tongue pieces 11a and 11b can be reduced. An appropriate margin is given to the thickness.

In the above embodiment, the washer 1 of the type in which the two parallel flap members 16, 17 are pressed and fastened is shown. However, in order to press and fasten one flap member, the washer is bent at a right angle. Instead of the portion 4, the present invention can be applied to a washer having a substantially L shape in which the legs whose free ends are in contact with the concrete form plate are connected. Also, the pair of left and right reinforcing ribs 6 and 7 is provided at least at the intermediate position between the mold clamping rod-shaped body through hole 5 provided in the washer 1 and one end of the washer length direction. It is sufficient to provide the front half portions 6a and 7a so as to slidably guide the washer only in the longitudinal direction, and the rear half portions 6b and 7b and the arcuate portions 6c and 7c can be omitted.

[0013]

[Operation and effect of the device]

 According to the concrete form clamping member of the present invention as in the above embodiment, since the wedge plate is connected to the washer only so as to be slidable back and forth in the driving direction, the wedge plate is connected to the washer by a chain or the like. Although the problems of the conventional metal fittings can be solved, in particular, according to the configuration of the present invention, the wedge plate is formed with the concave grooves not penetrating in the plate thickness direction on both the left and right side surfaces thereof. Therefore, the strength reduction of the wedge plate can be suppressed as compared with the case where the elongated hole penetrating in the plate thickness direction is provided in the wedge plate.

Further, the washer is integrally formed with a pair of left and right reinforcing bending ribs for guiding the wedge plate slidably only in the washer length direction. A contact surface for the flap material can be secured even on the outside, and the effective width of the washer can be widened so that the concrete formwork can be fastened stably. In this way, it is possible to enhance only the reinforcing effect without deteriorating the stability of the washer and thus projecting deformation from the upper end corners of the inner vertical wall of the pair of left and right protruding ribs to between the protruding ribs. Since the pair of left and right tongue portions configured as described above are used as retaining means for the wedge plate, the portion holding the tongue portion does not project in a cantilever manner from the washer main body portion, but the free end portion. The tongue portion is supported by the non-bending ribs. Moreover, both the tongue portions themselves are not formed by notching and raising the reinforcing ribs, but the plate thickness itself is partially projected and deformed. Since it is configured as described above, the strength of the tongue piece itself and the supporting strength thereof are extremely high. Therefore, the shallow fitting state between the concave groove on the wedge plate side and the tongue piece can be reliably maintained.

As described above, according to the present invention, in combination with fitting the tongue portions on the washer side on the left and right sides of the wedge plate, it is possible to use the chainless system very safely and stably. It is now possible to obtain a metal mold for tightening concrete formwork.

[Brief description of drawings]

FIG. 1 is a plan view of a washer.

FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 3 is a side view showing a wedge plate before being attached to a washer.

FIG. 4 is a vertical cross-sectional side view showing a state when a wedge plate is attached to a washer.

FIG. 5 is an enlarged vertical cross-sectional view showing a joint between a washer and a wedge plate.

FIG. 6 is a vertical sectional side view showing a use state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Washer, 2 ... Wedge plate, 5 ... Form-clamping rod-shaped main body through hole, 6, 7 ... Left / right paired reinforcing ribs, 6d, 7d ... Inner vertical wall portion, 8, 9a, 9b ... Butter Material contact surface, 11a, 11b ... Tongue piece portion for preventing wedge plate removal, 12a, 12b ... Recessed groove, 13, 14 ... Recessed groove closing portion, 15 ... Form body tightening rod-shaped body, 16, 17 ... Butter Material, 18 ... wedge hole.

Claims (1)

[Scope of utility model registration request] 1. A combination of a washer and a wedge plate that abut against a flap material, and at least a wedge-shaped main body through hole and a washer provided on the washer on the wedge plate abutting side of the washer. A pair of left and right reinforcing protrusion ribs for guiding the wedge plate slidably only in the length direction of the washer is integrally formed at an intermediate position with one end in the length direction. A pair of left and right tongues are formed by projecting and deforming the upper corners of the ribs toward both the bent ribs, and the left and right sides of the wedge plate are parallel to the wedge driving direction without penetrating in the plate thickness direction. A concrete formwork assembling fitting formed by fitting the tongue pieces into a pair of left and right recessed grooves formed in the left and right ends.