JPS5839627B2 - Corrugated board construction equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a corrugated plate construction device used for tightening fasteners when attaching corrugated plates used for roofs or fences of various structures to purlins or crosspieces. The object of the present invention is to provide a corrugated board construction device which is attached to a tightening tool and can extremely easily and quickly fasten fasteners such as drill screws, tapping screws, or driving screws.

Traditionally, hook bolts were used to install corrugated plates and the nuts were tightened by hand, but this corrugated plate construction work
Excessive tightening can crush the corrugated plate, while insufficient tightening can cause leaks, so a skilled worker is required to properly tighten the corrugated plate, resulting in low work efficiency.

In recent years, corrugated plates have been installed using drill screws instead of hook bolts due to a shortage of skilled workers and the need to shorten construction time due to rising labor costs.

However, general-purpose electric rotary tools used for tightening drill screws are equipped with only a simple rotational drive mechanism, and electric rotary tools developed specifically for drill screws are also equipped with clutch mechanisms.

But - it does not have an adjustable torque control mechanism.

Therefore, when performing corrugated plate construction work with drill screws using these general-purpose or dedicated electric rotating tools,
Excessive tightening could crush the ridges of the corrugated plate and, in extreme cases, destroy the corrugated plate.

In order to prevent such excessive tightening, a special drill screw with a stopper installed at an appropriate position on the screw shaft in accordance with the peak height of the corrugated plate has been developed. If the thread diameter is small, the threaded part may break due to excessive torque, or if the support member of the corrugated plate is thin, the female thread may be tapped into the support member due to the impact when the stopper contacts the support member and suddenly stops. In addition, when the screw diameter is large and the breaking strength is high, tightening with the stopper described above is inconvenient as it may cause damage to the bit of the tool, the cooling latch of the electric rotating tool, and other transmission mechanisms. was there.

The present invention has been developed in view of the current situation, and the present invention automatically tightens drill screws and other fasteners to predetermined positions according to the peak height of the corrugated plate by simply attaching the fasteners to electric rotating tools and other tools. In addition, it is possible to tighten the flat washers and gaskets assembled to the drill screws and other fasteners while bending them to follow the convex stripes of the corrugated plate, and the construction of the corrugated plate requires no skill or manual labor. The object of the present invention is to provide a corrugated board construction device that can perform the construction extremely easily and quickly without having to do so.

In order to achieve the above object, the corrugated plate construction apparatus according to the present invention includes an outer cylinder having legs at the lower end that span the convex stripes of the corrugated plate and abut against the grooved strips on both sides, an inner cylinder having a curved surface, fitted into the outer cylinder so as to be slidable in the axial direction within a predetermined range, and constantly biased upward by a spring interposed between the inner cylinder and the outer cylinder; A bit holder fitted on the upper part of the inner cylinder, a tightening tool bit held in the bit holder so that only rotation is possible, and a magnet provided at the tip of the bit is a stopper. The head of the stopper is configured to suction and hold the head of the bit on the tip of the bit. The present invention is characterized in that the tightening height is regulated by the lowest position of the inner cylinder, and the flat washer and packing are formed into a curved shape from the curved surface of the inner cylinder.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

Reference numeral 1 denotes an outer cylinder constituting the main body of the device, which has a leg portion 2 at its lower end with a chevron-shaped notch 3 so as to span over the convex portion l of the corrugated plate 35 and come into contact with the concave portions on both sides; A lid body 4 is screwed onto the opening.

Reference numeral 5 denotes an inner cylinder that is slidably fitted into the outer cylinder 1, and has an arc-shaped curved surface 6 at the lower end, and the flange 1 and the outer cylinder 1 are connected to each other at the upper end.
The annular step part 8 of the outer cylinder 1 is always biased upward by interposing a spring 9 between the annular step part 8 and the annular step part 8 protruding from the middle of the inner surface of the outer cylinder 1. Pin 1 penetrated into
1 is engaged, and the sliding range with respect to the outer cylinder 1 is regulated by the length of the long groove 10.

Reference numeral 12 denotes a bit holder, which has a through hole 13 in the center thereof through which a bit 19 is inserted, and a receiving portion 14 for a locking ring 22 is provided at the upper end opening of the through hole 13.

The bit holder 12 has a male screw 15 provided on the outer periphery connected to the inner cylinder 5.
It is attached by screw-fitting into a female thread 16 provided on the upper inner surface of the inner cylinder, and by adjusting the screwing depth, the position of attachment to the inner cylinder 5 can be adjusted up and down. The mounting position is fixed by pressing a set screw 18.

The bit 19 has an annular groove 20 in the middle part, and the annular groove 20
The lid body 21 is loosely fitted in advance to the upper part of the bit holder 12, and the locking ring 22 engaged with the annular groove 20 is inserted into the receiving part 14 of the bit holder 12.
At the same time, the lid body 21 is screwed onto the bit holder 12, and is held by the bit holder 12 so that only rotation is possible.

Reference numeral 23 denotes a retaining cylinder for a stopper that is detachably connected to the lower end of the bit 19, into which a rod-shaped magnet 24 is fitted via a bushing 25 made of a non-magnetic material such as a copper alloy. A box-shaped wrench portion 26 is provided,
The stopper with the head 31 fitted to the wrench portion 26 is attached to the magnet 2.
4, it is designed to be held by suction.

In the above embodiment, the fastener is a drilled screw 30 having a hexagonal head 31 at the upper end and a drilled part 32 at the lower end, and the screw shaft is fitted with a thin flat washer 33 and made of rubber, plastic or other elastic material. An elastic packing 34 consisting of is assembled.

In the figure, 35 is a corrugated plate, and 36 is a steel frame channel material to which the corrugated plate 35 is attached.

Next, a construction method using the corrugated plate construction apparatus having the above configuration will be explained.

First, the upper end of the bit 19 is connected to the rotating shaft 3γ of an electric rotary tool (not shown), the head 31 of the drill screw 30 is fitted into the wrench part 26 of the holding cylinder 23, and the magnet 24 attracts and holds the bit 19. .

At this time, the flat washer 33 and packing 34 assembled to the drill screw 30 are brought into contact with the lower end of the inner cylinder 5.

Next, the outer cylinder 1 is positioned at right angles to the upper surface of the corrugated plate 35 by positioning the outer cylinder 1 so that the leg part 2 straddles the convex part of the corrugated plate 35 and comes into contact with the concave part on both sides thereof, and the drill screw 30 Adjust the stopper to the correct position.

By this positioning, the drill screw 30 held in the holding cylinder 23 is automatically positioned substantially vertically above the predetermined stop position.

Next, when the electric rotating tool is turned on and the bit 19 is rotated and pushed down, the bit 19 (including the holding cylinder 23 connected to the tip), the bit holder 12, and the inner cylinder 5 are removed.
The spring 9 is compressed by the flange 7 of the inner cylinder 5 and moves downward, and the drill part 32 of the drill screw 30 abuts the corrugated plate 35 and drills the hole, and the washer 33 and the gasket 34
is gradually curved along the curved surface 6 of the inner cylinder 5.

Then, as shown in FIG. 2, the bit 19, bit holder 12, and When the inner cylinder 5 is pushed down, the drill screw 30 is drilled and screwed into the upper wall of the channel material 36, and at the same time, the washer 33 and packing 34, which are curved on the curved surface 6 of the inner cylinder 5, are inserted into the convex part of the corrugated plate 35. It adheres closely to the curved surface of the strip.

At this point, the holding cylinder 2 is still connected to the lower end of the bit 19.
Since the wrench portion 26 of No. 3 and the head 31 of the drill screw 30 are engaged, a rotational tightening force is applied to the drill screw 30, and the self-propelling action of the screw due to this rotational tightening force causes the drill to tighten. The screw 30 advances further and separates from the wrench portion 26 while compressing the gasket 34 appropriately, as shown in FIG. 3, and the tightening operation is completed.

In addition, when it is desired to change the tightening height of the drill screw 30, the setting screw 18 can be loosened, and the attachment position of the bit holder 12 to the inner cylinder 5 can be adjusted up or down.

In addition, as illustrated in FIG.
When using the drill screw 30a with a cross groove 1a, the bit holder 12 holds the pin N9a having the cross screwdriver portion 38 at the tip, and the cylindrical magnet 24a and the A magnetic bushing 25a is fitted to magnetize the pin H9a.

As explained above, according to the corrugated board construction apparatus of the present invention, the stopper held by suction at the tip of the bit can be automatically tightened to a desired position according to the peak height of the corrugated board, and the Since the flat washers and gaskets assembled on the metal fittings can be fastened while being curved according to the convex stripes of the corrugated plate, tightening is extremely easy and quick without the need for skilled workers or manual tightening work. Doing this will have the effect of greatly improving work efficiency.

In particular, since the height of the fastener can be kept constant when tightening, there is no possibility of crushing the corrugated plate due to excessive tightening.

This is extremely advantageous for construction work on soft vinyl chloride corrugated boards and fragile slate corrugated boards.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, and FIGS. 1 to 3 are longitudinal sectional front views showing the usage state of the corrugated board construction apparatus of the present invention, FIG. 4 is a longitudinal sectional view of the outer cylinder, and FIG. A front view of the inner cylinder, and FIG. 6 is a longitudinal sectional front view of another embodiment. 1... Outer cylinder, 2... Legs, 5...
...Inner cylinder, 6...Curved surface, 9...Spring, 10...Long groove, 11...Pin, 12
...Bit holding body, 23... Holding cylinder,
24... Magnet, 25... Non-magnetic bushing, 26... Wrench part, 30... Drill screw, 31... Head, 33...Flat washer, 34...Packing, 35...Corrugated plate, 36...Channel material.

Claims (1)

[Scope of Claims] 1. An outer cylinder having legs at its lower end that span the convex stripes of the corrugated plate and abut against the concave stripes on both sides, and an arcuate curved surface at its lower end; an inner cylinder fitted so as to be slidable in the axial direction within a predetermined range and always urged upward by a spring interposed between the inner cylinder and the outer cylinder; The bit holder, the bit of the tool held rotatably by the bit holder, and a magnet installed at the tip of the bit, the magnet attracts the head of the stopper to the tip of the bit. The fastener has a flat washer and a packing attached to its shaft, and the bit is sometimes tightened by the lowermost position of the inner cylinder. The corrugated board construction device is configured such that the flat washer and the packing are curved by the curved surface of the inner cylinder. 2. The corrugated board construction apparatus according to claim 1, wherein the bit holding cylinder is fitted into the inner cylinder so as to be displaceable in the axial direction.