JPS5833063B2 - Equipment for corrugated sheet construction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a corrugated sheet construction apparatus used for tightening fastening fittings when installing corrugated sheets used for roofing or fencing of various structures to a main building or crosspiece. The object of the present invention is to provide a corrugated plate construction device that is attached to a tightening tool and can extremely easily and quickly fasten fasteners such as drill screws, self-tapping screws, and driving screws.

Conventionally, hook bolts were used to install corrugated plates and the nuts were manually tightened, but in this corrugated plate construction work, over-tightening can crush the corrugated plates, and under-tightening can cause leaks. Therefore, a skilled worker is required to perform proper tightening, resulting in low work efficiency.

In recent years, corrugated sheets have been installed using drill screws instead of hook bolts due to the lack 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 only have a simple rotation drive mechanism, and electric rotary tools developed specifically for drill screws have clutch mechanisms, but they are adjustable. It does not have a torque control mechanism.

Therefore, when performing corrugated plate construction work using drill screws using these general-purpose or dedicated electric rotary tools, excessive tightening may crush the ridges of the corrugated plate and, in extreme cases, destroy the corrugated plate. Ta.

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. In this case, 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 tapped into the support member may be broken by the impact when the stopper hits the support member and suddenly stops. Furthermore, when the screw diameter is large and the breaking strength is high, the impact caused by the stopper causes damage to the bit of the tool, the clutch of the electric rotary tool, and other transmission mechanisms.

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, the flat washers and gaskets assembled to the drill screws and other fasteners can be tightened while being curved to match the convex stripes of the corrugated sheet, and corrugated sheet construction does not require any skill or manual labor. The object of the present invention is to provide an apparatus for constructing corrugated sheets that can be carried out extremely easily and quickly.

In order to achieve the above object, a corrugated sheet 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 sheet and abut against the grooved stripes on both sides, and an arc-shaped outer tube at the lower end. an inner cylinder having a curved surface, the inner cylinder being fitted into the outer cylinder so as to be slidable in the axial direction within a predetermined range, and always biased upward by a spring interposed between the inner cylinder and the outer cylinder; , a retaining means for a stopper provided at the lower part of the inner cylinder, and a spring fitted to the upper part of the inner cylinder so as to be slidable in the axial direction within a predetermined range and interposed between the inner cylinder and the inner cylinder. It includes a bit holding cylinder that is always urged upward, and a bit of a fastening tool that is rotatably held in the bit holding cylinder and extends through the inner cylinder, and the holding means holds the head of the stopper. The flat washer and gasket assembled to the stopper are sometimes curved by the curved surface of the inner cylinder when tightening.

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 35a of the corrugated plate 35 and come into contact with the concave portions 35b on both sides; A lid body 4 is screwed onto the upper end opening.

Reference numeral 5 denotes an inner cylinder that is fitted into the outer cylinder 1 so as to be slidable in the axial direction within a predetermined range, and has a curved surface 6 curved in an arc shape at the lower end, and a flange 7 connected to the upper end and an outer cylinder. It is constantly urged upward by a spring 9 interposed between the tube 1 and an annular step 8 connected to the middle of the inner circumferential surface of the tube 1 .

The cylindrical hole of the inner cylinder 5 is formed in three stages, and an inclined stepped portion 10 is provided at the upper end of the lowermost cylindrical hole that opens into the curved surface 6.

As will be described later, a sphere 12 holding a stopper is constantly pressed and locked in sliding contact with the inclined step portion 10, so a block 11 made of die steel or other metal material with excellent wear resistance is used as shown in the figure. It is preferable that the inclined stepped portion 10 be formed by fitting.

Reference numeral 13 denotes a retaining sleeve for the stopper, which has a flange 14 in the middle, and a plurality of through holes 15 radially bored outwardly and downwardly with respect to the axis. .

The holding sleeve 13 is slidably fitted into the lower cylindrical hole of the inner cylinder 5, and is always urged downward by a spring 17 fitted into the inner cylinder 5, so that the lower end thereof is attached to the curved surface 6 of the inner cylinder 5. It protrudes further downward.

As shown in FIG. 4, the through hole 15 is provided obliquely downward toward the outside with respect to the axis at an inclination angle θ of about 60 degrees.
It has a curved wall surface portion 16 along the spherical surface of the sphere 12 that is loosely fitted into the through hole 15 at its inner upper part, and the sphere 12 is restrained and locked to the inclined step part 10 by a spring 17 that urges the holding sleeve 13 downward. When a portion of the sphere 12 is attached to the retaining sleeve 1
When the holding sleeve 13 is displaced upward against the pressing force of the spring 17, the spherical body 12
is adapted to be displaced outward so that it does not protrude from the inner surface of the holding sleeve 13 (see FIG. 3).

Reference numeral 18 denotes a bit guide body that guides a bit 22 of a tightening tool, and has a through hole 19 in the center through which the bit 22 is inserted, and a guide cylinder portion 20 connected to the lower part of the through hole 19 is connected to the holding sleeve 13. It is embedded in

The bit guide body 18 is fitted into the inner cylinder 5 by screw fitting,
The fitting position can be adjusted so that the tip of the guide cylinder part 20, which cooperates with the sphere 12 to hold the head of the stopper, is placed at a predetermined position near the flange part 14 of the holding sleeve 13. There is.

The bit guide 18 is fixed to the inner cylinder 5 by a set screw 21.

Reference numeral 23 denotes a bit holding cylinder, which has a receiving part 24 for a locking ring 25 at its upper end, and is fitted into the upper opening of the bit guide 18 so as to be slidable in the axial direction within a predetermined range. It is urged upward by a spring 26 interposed between.

Note that the spring pressure of the spring 26 is set to be slightly smaller than the spring pressure of the spring 9 that urges the inner cylinder 5 upward.

27 is a stop ring of the bit holding cylinder 23.

The bit 22 has an annular groove 28 in the middle part, and the annular groove 28 is
A lid 29 and a washer 30 are loosely fitted above 8, and the locking ring 25 engaged with the annular groove 28 is fitted into the receiving part 24 of the bit holding cylinder 23, and the lid 29 is fitted through the washer 30. By screwing the bit 22 into the bit holding cylinder 23, the bit 22 is rotatably supported by the bit holding cylinder 23.

In the illustrated embodiment, the stopper is a drill screw 30 having a cross-shaped recess 31 at the upper end and a drill portion 32 at the lower end.
A washer 33 made of a thin metal plate and a packing 34 made of synthetic rubber or plastic are installed in advance in the threaded portion.

The bit 22 is shown as a cross screwdriver bit suitable for the drill screw 30, but if the head of the stopper is a hexagonal head, a bit with a socket portion at the tip may be used.

Further, the corrugated plate 35 may be made of plastic, slate, or galvanized iron.

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

Next, the construction method will be explained.

The corrugated plate construction apparatus having the above structure is used by connecting the upper end of the bit 22 to the rotating shaft 37 of an electric screwdriver.

First, as shown in FIG.
Drill screw 3 while pushing inward with your fingers against 7.
The head 31 of No. 0 is inserted into the holding sleeve 13 until the flange portion 31a of the head 31 comes into contact with the guide cylinder portion 20, and then the holding sleeve 13 is released.

Then, the holding sleeve 13 protrudes downward again under the action of the spring 17, and as shown in FIG. The drill screw 30 is held within the holding sleeve 13 with the portion 31a being held between the drill screws 30 and 31a.

At this time, the washer 33 comes into contact with the lower end of the inner cylinder 5 and is locked.

Next, the leg part 2 of the outer cylinder 1 is positioned so as to straddle the convex part 35a of the corrugated plate 35 and come into contact with the concave part 35b on both sides thereof, and is placed at right angles to the upper surface of the corrugated plate 35. Adjust the stopper to the correct position.

By this positioning, the drill screw 30 held in the holding sleeve 13 is automatically positioned substantially perpendicularly above the predetermined stop position.

Next, when the bit 22 is pushed down slightly, the spring pressure of the spring 26 is slightly smaller than that of the spring 9, so the bit holding cylinder 23 first sinks a little, and the bit 22 engages with the head 31 of the drill screw 30.

Next, when the electric screwdriver is turned on to rotate the bit 22 and push down the bit 22, the inner cylinder 5 holding the drill screw 30 in a rotating state moves down while compressing the spring 9 with the collar 7.

As the inner cylinder 5 descends, the drill screw 30 also descends together with the inner cylinder 5, but when the drill part 32 at the tip abuts the corrugated plate 35 and enters the corrugated plate 35, the washer 33 and the seal 34 is gradually curved along the curved surface 6 of the inner cylinder 2.

When the inner cylinder 2 further descends, the retaining sleeve 13 is pushed inwards by the curved washer 33 against the spring 17, thereby releasing the ball 12 that was holding the drill screw 30.
is freely rotated to the outside of the holding sleeve 13 and the drill screw 30
is released from the holding sleeve 13.

Then, as shown in FIG. 2, when the inner cylinder 5 is lowered to a predetermined position and the bit 22 is pushed down to the lowest position where the lower end of the bit holding cylinder 23 contacts the bottom of the opening of the bit guide 18, 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 brought into close contact along the curved surface of the convex strip portion 35a of the corrugated plate 35. .

At this point, the tip of the bit 22 is still engaged with the head 31 of the drill screw 30, so a rotational tightening force is applied to the drill screw 30, but this rotational tightening force causes the screw to automatically tighten. Due to the advancing action, the drill screw 30 advances further, compresses the packing 34 to an appropriate degree, and at the same time separates from the bit 22, completing the tightening operation.

In the above embodiment, the holding sleeve 13 with the sphere 12 is used as a holding means for a drill screw, but the tightening of bits and other parts is performed using known technical means as a means for holding screws to tools, such as a bit. It is also possible to attach a magnet to the bit 22 and use the magnetic force to attract and hold the drill screw 30 at the tip of the bit 22.

In addition, when using self-tapping screws as fasteners,
It is assumed that pilot holes are previously formed in the corrugated plate 35 and the channel material 36.

In addition, when using a driven screw as a fastener,
The driver bit 22 may be replaced with a driving tool bit.

As explained above, according to the corrugated plate construction apparatus of the present invention, the stopper held at the lower part of the inner cylinder can be automatically tightened to a desired position according to the peak height of the corrugated plate, and Since the flat washer and gasket assembled on the fastener can be fastened while being bent to match the convex stripes of the corrugated plate, tightening is extremely easy and does not require a skilled worker or manual tightening work at all. It can be done quickly and has 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 by over-tightening.

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

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view of the corrugated board construction apparatus according to the present invention in a working state, Fig. 2 is a longitudinal sectional front view of the same tightening operation state, Fig. 3 is an enlarged sectional view of the same main part, and Fig. 4 The figure is an enlarged sectional view of the main part of the holding sleeve. 1... Outer cylinder, 2... Legs, 5...
... Inner cylinder, 6 ... Curved surface, 10 ... Inclined step, 12 ... Sphere, 13 ... Holding sleeve, 14 ... ...Flame, 15...Through hole, 18...Bit guide, 22...
Bit, 23... Bit holding cylinder, 35...
...Corrugated plate, 36...Channel material.

Claims (1)

[Claims] 1. An outer cylinder having legs at the lower end that straddles the convex stripes of the corrugated plate and abuts against the concave stripes on both sides, and a curved surface curved in an arc shape at the lower end, so that the outer tube has legs within a predetermined range. an inner cylinder that is slidably fitted in the axial direction and is constantly biased upward by a spring interposed between the inner cylinder and the outer cylinder; and a holding means for a stopper provided at a lower part of the inner cylinder; , a bit holding cylinder fitted in the upper part of the inner cylinder so as to be slidable in the axial direction within a predetermined range and always urged upward by a spring interposed between the bit holding cylinder and the bit holding cylinder; The clamping device, which is rotatably held in the cylinder and extends through the inner cylinder, is provided with a bit of a tool, the head of the stopper is held by the holding means, and a flat washer and a packing are assembled to the stopper. A device for constructing corrugated plate, wherein the tightening process is performed by forming a curved shape by the curved surface of the inner cylinder.