JP2002242914A - Screw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screw capable of being easily used and reducing labor. SOLUTION: The screw is provided with a nail head part 11 rotated by a rotation tool; a body part formed to a parallel or approximately parallel rod shape; and a terminal end part formed to a sharp shape. The body part has a helical part 13 having a screw structure at a former part and a rod-like nail body part 12 having no screw structure at a latter part. The terminal end part is formed on the nail body part 12 and is formed to a conical sharp shape or a polygonal sharp shape. The nail head part 11 extends from a front end part of the helical part 13 and is formed in hittable by a nail, in insetable by a screw or in returnable by a screw. After the screw is positioned by hitting the terminal end part into an object, it is rotated and tightened. Accordingly, the screw can be easily used and can reduce labor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a screw.

[0002]

2. Description of the Related Art Nails made of various materials are iron nails or steel nails. Usually, the nail is formed in a smooth rod shape, a nail cap is formed on the head, and the end portion is formed in a circular or polyhedral cone. The nail is driven into the target and fixed, and has the following advantages. (1) Since the target is driven into the target by a tool such as a hammer, nailing is easy.

(2) It is driven quickly. (3) Can be extracted by a tool. However, nails have the following disadvantages. (1) Since it has a smooth rod shape, the nailed force is small and it is relatively easy to fall off.

(2) If the nail is erroneously hit by a tool such as a hammer, the nail is bent. (3) When the nail head is completely driven into the target by a tool such as a hammer, the surface of the target is easily damaged. (4) Noise is generated when a long nail is driven into a target. (5) When the nail is pulled out of the target, the surface of the target may be scratched by a tool.

(6) It is impossible to reuse a nail hole. Thus, screws are used. The conventional screw is screwed and fixed to a target by a spiral method, and has the following advantages. (1) The fixing force is increased by the screw structure, and it is hard to fall off. (2) The screw holes can be used again.

(3) Noise is reduced. (4) The surface of the target is not damaged by screwing or screwing. However, conventional screws have the following disadvantages. (1) Since the screw is screwed into the target, the initial resistance is large and the screw may not be screwed accurately due to the inclination. Position determination is difficult and the surface of the target is easily damaged by the movement of the screw.

(2) The speed of being screwed into the target is low,
Construction time increases. (3) If the length of the screw is long, the labor for construction increases.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide a screw which can be used easily and requires less labor.

[0009]

SUMMARY OF THE INVENTION A screw according to the present invention has a nail head rotated by a rotary tool, a body formed in a parallel or almost parallel rod shape, and a pointed shape. End portion that is provided. The body has a spiral step having a screw structure at the front stage and a rod-shaped nail body having no screw structure at the rear stage. The end is formed in a nail body step,
It is formed in a conical or polygonal pointed shape. The nail head extends from the front end of the spiral step and is formed to allow nailing, screwing or unscrewing.

After the distal end is driven and positioned, the screw is rotated and tightened. Therefore, it can be easily used and labor can be reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a screw according to one embodiment of the present invention comprises a nail head 11 rotated by a nailing and rotating tool, a helical rod, and a parallel or substantially parallel extending from the helical rod. It has a rod-shaped nail bar and a distal end formed in a conical or polyhedral pointed shape.

Extending from the helical rod is a nail step 12 that does not have a parallel or nearly parallel rod-like thread structure. The nail step is formed in a pointed shape with a conical or polyhedral cone at the end, and when the nail head 11 is nailed, the end of the nail step is driven into the target. A spiral step 13 formed in a rod shape or a cone shape that is parallel or almost parallel extends to the nail body of the nail head 11. A screw structure is formed in the spiral step 13 in the radial direction, and a nail body step 12 having no screw structure extends from an end of the spiral step 13.

As shown in FIG. 2, a screw 1 is formed by a nail step 12 and a spiral step 13 having no screw structure. The nail 1 is driven into the target by the hammer 20 and the screw 1 is positioned and fixed. As shown in FIG. 3, when the nail step 12 is driven into a target, a general automatic or manual rotating tool 30 is connected to the nail head 11 and a rotating operation is performed. Since the spiral stage 13 is screwed into the target, it is firmly nailed, the noise is low, and the destruction of the surface of the target is prevented. When the spiral step 13 is rotated in the opposite direction, the screw 1 is pulled out, and the nail step 12 is pulled out of the hole formed by the spiral step 13. Therefore, no nailing tool is required, and destruction of the surface of the target is prevented. The screw hole can be used again for tightening the screw 1.

As shown in FIG. 1, the nail head 11 has a (-)-shaped groove 111 formed at the top end of the nail head 11 like a conventional screw so as to be connected to the rotary tool 30. Also, as shown in FIG. 4, the nail head 11A of the screw 1A is formed with a (+)-shaped groove 112A crossing the top end so as to be coupled to the rotary tool 30, and the groove 112A can be pneumatic, manual, or manual. In addition, it is rotated by being combined with an automatic power drive or a manual rotary tool. As shown in FIG. 5, the nail head 1 of the screw 1B
1B is formed with an intersecting groove 112B at the top end so as to be coupled with the rotary tool 30, and the intersecting grooves 112B extend to the side edges of the nail head 11B, respectively. It is combined with an automatic driving force or a manual rotating tool and rotated. Also, other geometrical coupling structures are formed.

One or more grooves are formed in the nail body of the screw in the axial direction. The screw is driven into the target by the method of being driven directly by the groove or after being driven in, by the method of being tightened. Also, the screw can be pulled out after being loosened. As shown in FIGS. 6 and 7, the screw 1C according to another embodiment of the present invention has a spiral step 13C in which the screw structure is formed intermittently in the radial direction. The spiral step 13C has a single parallel, spiral, regular or irregular spiral groove 14C. The screw is driven in by a direct driving method, then driven in by a tightening method, rotated, and extracted.
As shown in FIGS. 8 and 9, the screw 1D has a nail step 12D having no screw structure, and the screw step 13D has
Parallel, spiral, regular or irregular spiral groove 1 of a book
4D is formed. As shown in FIGS. 10 and 11, the screw 1E has a nail step 12E having no screw structure, and the spiral step 13E has three parallel, spiral,
In addition, a regular or irregular spiral groove 14E is formed. Further, more opening grooves are formed, and the construction effect is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a screw according to an embodiment of the present invention.

FIG. 2 is a schematic view illustrating a screw according to an embodiment of the present invention.

FIG. 3 is a schematic view illustrating a screw according to an embodiment of the present invention.

FIG. 4 is a perspective view showing a screw according to an embodiment of the present invention.

FIG. 5 is a perspective view showing a screw according to an embodiment of the present invention.

FIG. 6 is a perspective view showing a screw according to another embodiment of the present invention.

FIG. 7 is a sectional view showing a screw according to another embodiment of the present invention.

FIG. 8 is a perspective view showing a screw according to another embodiment of the present invention.

FIG. 9 is a sectional view showing a screw according to another embodiment of the present invention.

FIG. 10 is a perspective view showing a screw according to another embodiment of the present invention.

FIG. 11 is a sectional view showing a screw according to another embodiment of the present invention.

[Explanation of symbols]

 1 Screw 1A Screw 1B Screw 1C Screw 1D Screw 1E Screw 11 Nail Head 11A Nail Head 11B Nail Head 12 Nail Step 12C Nail Step 12D Nail Step 12E Nail Step 13 Spiral Step 13C Screw Step 13D Screw Step 13E Screw Step 13E Groove 14D Groove groove 14E Groove groove 111 (-)-shaped groove 112A Cross groove 112B Cross groove

Claims (4)

[Claims] 1. A head rotated by a rotary tool, a rod-shaped body formed in a parallel or substantially parallel rod shape, and a distal end formed in a sharp shape, wherein the rod-shaped body is It has a helical front end and a screw-free rod-shaped rear end, and a screw-free rod-shaped nail is formed into a conical or polyhedral pointed tip, and a threaded helical rod-shaped front end can be extended and nailed or A screw having a head which can be screwed or unscrewed, and which can be driven and then tightened or turned and then pulled out. 2. The body has a spiral step extending from the vicinity of the head and formed in a parallel or substantially parallel rod or cone shape, and the spiral step is formed in a radial direction. The screw according to claim 1, wherein the end of the screw is extended to form a rod-shaped nail step having no screw, and the end is formed in a pointed shape of a cone or a polygonal pyramid. Screw. 3. The head has a structure connected to a rotary tool and capable of rotating forward and backward, and has a (-)-shaped groove, an intersecting (+)-shaped groove, or an intersecting concave at a top end of the head. Having a groove, the crossed grooves each extend to a side edge of the head,
The screw according to claim 1, wherein a concave hole or a groove having another geometric shape is formed. 4. The end portion is formed such that spirals radially distributed in the spiral step are intermittently distributed, and the step has one or more parallel, spiral or other spirals. 2. The screw according to claim 1, wherein a regular or irregular spiral groove is formed.