JPH0516151U - Drilling screw tightening tool - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention does not break the screw of the drilling screw or skip the screw head when fixing the roof material, the outer wall material, etc. to the fixing material in the construction field with the drilling screw. It's about tightening. [Structure] The drilling screw tightening tool 2 is provided with a drilling screw tightening portion 7 for opening and screwing a fixed material 6 in a socket portion 9 on a rotation driving side thereof. And
A tightening depth protrusion 21 is provided on the outer periphery of the drilling screw tightening portion 7 so that the tip of the tightening depth protrusion 21 hits the fixed material 6 at the end of tapping to prevent drilling from the rotation preventing portion 9 of the socket 4. The locking portion 16 of the screw tightening portion 7 is disengaged so that the clutch is off.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drilling screw tightening tool for fixing a roof material, an outer wall material and the like to a fixing material with a drilling screw in the field of construction.

[0002]

[Prior Art]

 So-called self drilling screws, which can be self-drilled and screwed, are used to fix roofing materials to fixing materials. Self-drilling screws are convenient and widely used because they are attached by punching them in a predetermined position such as a deck plate.

[0003]

[Problems to be solved by the device]

 In fixing the above drilling screw, sufficient torque is required to make the pilot hole for the drilling screw, but in the subsequent tapping, if the torque is not less than that, it may break the screw, and also the drilling. Overtightening can also cause the head of the screw to skip.

However, in the conventional drilling screw tightening tool, the drilling screw tightening portion is clutch-engaged with the socket so that tapping can be performed with a required torque. I had to stop. As a result, the work efficiency was difficult to increase, and the yield rate for fastening the drilling screw was high.

[0005]

[Means for Solving the Problems]

 The present invention has been made in view of the above points, and in order to solve the above problems, a prepared hole or tap for a drilling screw is bored in a fixed material such as a roofing material, and the drilling screw is tightened. In the drilling screw tightening tool to be worn, a drilling screw tightening part that opens and screws the material to be fixed is provided in the socket part on the rotation drive side, and the tightening depth detecting part is provided on the outer periphery of the drilling screw tightening part. The tapping ball insertion hole is opened, and the drilling screw tightening part on the socket part can be moved forward and backward in the axial direction of the drilling screw so that the tapping ball insertion hole can be inserted into the tapping ball insertion hole. Of the drilling screw tightening part on the socket part so that it can be engaged with the locking part of the drilling screw tightening part. Then, the elastic material for the clutch is contracted so that the locking portion engages with the anti-rotation portion, and when tapping, the elastic material for the clutch expands according to the screw tightening amount of the drilling screw tightening portion to the anti-rotation portion. Make the half-clutch slidable in the locking part, and when tapping ends, the tip of the tightening depth detection part will hit the fixed material and the locking part will be disengaged from the rotation stop part. It is to provide a drilling screw tightening tool characterized by that.

[0006]

[Action]

 In the present invention, when the fixed material is drilled by the drilling screw tightening tool and tapping is finished, the fixed material hits the tip of the tightening depth detection part of the drilling screw tightening part, The socket part moves rearward against the elastic material for the clutch, the locking part disengages from the rotation stop part, and the rotation force is no longer transmitted from the socket part to the drilling screw tightening part. As a result, the drilling screw does not rotate, preventing damage to the screw and preventing the screw head from jumping, thus improving work efficiency.

[0007]

【Example】

 Hereinafter, the present invention will be described based on embodiments. FIG. 1 and the following figures show one embodiment of the present invention. The drilling screw tightening tool 2 for the drilling screw 1 is such that the head part 5 of the drilling screw 1 is inserted in the front part of the socket part 4 having the shank 3 protruding from the rear part as shown in FIG. It is formed by connecting the drilling screw tightening portions 7 to be worn.

In the shank 3, as shown in FIGS. 1 and 2, a detent portion 9 is axially symmetrically projected on the outer periphery of the center of a shank body 8 in the shape of a rod. As shown in the figure, a tightening depth adjusting nut 10 having a predetermined diameter is screwed in the rear part thereof, and a locking groove 12 of a predetermined width around which a tapping ball 11 can be loosely fitted is provided on the front outer peripheral part. is doing. Further, as shown in the figure, the front end face of the shank 3 is provided with a recessed hole 13 having a predetermined depth for accommodating the elastic member 14 for the coil spring clutch, so that the drilling screw tightening portion 7 is always elastic. It is designed to push forward.

The drilling screw tightening portion 7 has a paragraph-like tubular shape as shown in FIGS. 1 and 2, and the rear tubular body 15 on the rear side thereof is fitted to the front portion of the clutch portion 4 described above. In addition, two or four locking portions 16 that are cut out in a semicircular shape are provided in the rear end portion in an axially symmetrical manner so that the locking portions 9 can be locked. Then, a circular tapping ball hole 17 is formed on the outer peripheral surface of the drilling screw tightening portion 7 as shown in the drawing, and the tapping ball 11 is mounted in the locking groove 12 for drilling. The screw tightening portion 7 is made to be able to move forward and backward by a certain amount against the clutch elastic member 14.

Reference numeral 18 is a cylinder for detecting the tightening depth of the drilling screw 1 which covers the side peripheral surface of the drilling screw tightening portion 7. The tightening depth adjusting nut 10 is mounted via the bearing portion 19 The tightening depth of the drilling screw 1 can be adjusted by adjusting the position of the tightening depth adjusting nut 10.

A screw 20 is bored at the tip of the above-mentioned tightening depth detecting cylinder 18, and a cylindrical tightening depth detecting portion 21 made of nylon or the like is screwed so as to be replaceable. When the tightening depth detecting portion 21 abuts on the fixed material 6, it serves as a stopper.

Therefore, when the fastening depth detecting portion 21 hits the fixed material 6, the socket portion 4 can be retracted with respect to the drilling screw fastening portion 7 at the time of tapping, and the engagement of the drilling screw fastening portion 7 can be performed. The stopper portion 16 is separated from the rotation stopper portion 9 of the socket portion 4 and enters a so-called half-clutch state, so that the drilling screw 1 can be tightened in a predetermined manner, and when tightened, rotation is not transmitted to the drilling screw tightening portion 7. I have to.

FIG. 3 shows a state where the drilling screw 1 of the present invention is used to fasten the drilling screw 1 to the fixed material 6, and the locking portion 16 is locked to the rotation stopping portion 9, It is in the clutch-on state.

In FIG. 4, the tightening depth detection part 21 of the drilling screw tightening tool 2 hits the fixed material 6, the locking part 16 separates from the rotation stopping part 9 and becomes a half-clutch state, and the drilling screw 1 The drilling screw 1 can be tightened without damaging the screw or screw head of the drilling screw 1. As shown in Fig. 5 and Fig. 6, it can be efficiently fastened to the joint of the roof material and the outer wall material.

The tip position of the tightening depth detecting portion can be corrected by adjusting the screwing position of the tightening depth detecting cylinder, and the tightening depth detecting portion is used for detecting the tightening depth. It may be formed integrally with the cylinder. Further, the tightening depth detecting portion is not limited to the perfect cylindrical shape, but may be an appropriate shape such as a comb tooth shape or a tripod shape within the scope of the present invention described above. is there.

Further, in the embodiment, the manual type tool has been described, but an automatic type tool automatically supplied by a drilling screw is also applicable. Furthermore, the deck plate of the material to be fixed may have a corrugated shape, a flat shape, or the like, and can be widely used for the floor surface, the wall surface, and others.

[0017]

[Effect of the device]

 As described above, according to the present invention, when the fixed material is drilled with the drilling screw tightening tool and tapping is completed, the tip of the tightening depth detecting part of the drilling screw tightening part is attached to the fixed material. As a result, the socket part moves rearward against the elastic material for the clutch, the locking part disengages from the detent part, and the rotational force is no longer transmitted from the socket part to the drilling screw tightening part. As a result, the drilling screw does not rotate, preventing damage to the screw and preventing jumping of the screw head, thus improving work efficiency.

[Brief description of drawings]

FIG. 1 is a central longitudinal half sectional view of an embodiment of the present invention,

FIG. 2 is an exploded perspective view of the same as above with a part omitted.

FIG. 3 is a side sectional view, partly omitted, for explaining the drilling state of the above.

FIG. 4 is a side sectional view, partly omitted, for explaining the tapping state in the above.

FIG. 5 is a side sectional view of the same drilling screw tightened state,

FIG. 6 is another side cross-sectional view of the same drilling screw in the tightened state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Drilling screw 2 ... Drilling screw tightening tool 4 ... Shank part 6 ... Fixed material 7 ... Drilling screw tightening part 9 ... Rotation stop part 11 ... Tabbing ball 14 ... Clutch elastic material 16 ... Locking part 17 ... Ball insertion hole for tabbing 18 ... Tightening depth detection cylinder 21 ... Tightening depth detector

Claims (1)

[Scope of utility model registration request] 1. A drilling screw tightening tool in which a pilot hole for a drilling screw and a tap are bored in a fixed material such as a roofing material and is fastened with a drilling screw, in which the fixed material is opened in a socket portion on the rotary drive side. A drilling screw tightening part for drilling and screwing is provided, a tightening depth detecting part is provided on the outer periphery of the drilling screw tightening part, and a tapping ball insertion hole is opened, and a drilling screw is provided on the socket part. The tapping ball is inserted into the tapping ball insertion hole so that the tightening part can move forward and backward in the axial direction of the drilling screw, and the socket part is provided with a rotation stopping part for the drilling screw tightening part. It is arranged so that it can be engaged with the locking part of the screw tightening part, and at the time of drilling, the clutch elastic member is contracted against the drilling screw tightening part so that the locking part engages with the above locking part. At the time of tapping, the elastic material for the clutch stretches in accordance with the screw tightening amount of the drilling screw tightening part to make the locking part in the anti-rotation part the half-clutch slidable state, and when tapping ends, the above-mentioned A drilling screw tightening tool, characterized in that the tip of the tightening depth detection part hits the fixed material, and the locking part is disengaged from the rotation stopping part.