SCREW STRUCTURE

Abstract

A screw structure is disclosed herein. The screw for assembly in a screw cartridge of a screw gun comprises a rod body, a head part having a guide flange radially disposed on a top thereof, and a thread part.

Claims

1. A screw structure, comprising: a rod body having a first end and a second end; a head part integrally formed at the first end of the rod body and having a guide flange radially disposed on a top thereof; and a thread part longitudinally extended along the rod body.

2. The screw structure as claimed in claim 1, wherein the head part further has a linking part in a curved shape and extended from the first end of the rod body to the guide flange.

3. The screw structure as claimed in claim 2, wherein the head part is further provided with a contacting part between the guide flange and the linking part and having a diameter less than a diameter of the guide flange.

4. The screw structure as claimed in claim 1, wherein the second end of the rod body is formed with a sharp tip.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG. 1 is a stereogram showing a first embodiment for a screw structure according to the present invention;

[0013] FIG. 2 is a schematic diagram showing a screw structure in use according to the present invention;

[0014] FIG. 3 is a cross-sectional view showing a screw structure in use according to the present invention;

[0015] FIG. 4 is an enlarged cross-sectional view showing a screw structure in use according to the present invention;

[0016] FIG. 5 is a stereogram showing a second embodiment for a screw structure according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0017] Hereinafter, an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0018] As showed in FIG. 1, a stereogram showing a first embodiment for a screw structure according to the present invention is disclosed herein. The screw (1) comprises a rod body (11) having a first end and a second end; a head part (12) integrally formed at the first end of the rod body (11); a sharp tip (13) formed at the second end of the rod body (11); and a thread part (14) longitudinally extended along the rod body (11). The characteristic is that the head part (12) has a guide flange (121) radially disposed on its top and a linking part (122) in a curved shape and extended from the first end of the rod body (11) to the guide flange (121). Furthermore, a top surface of the guide flange (121) of the head part (12) is formed with a bonding groove.

[0019] Referring to FIG. 2, FIG. 3 and FIG. 4, in use of the present invention, plural screws (1) are directly filled in an accommodating slot (21) of a screw cartridge (2) of a screw gun. An upper side and a lower side of each of two lateral walls of the accommodating slot (21) are respectively provided with a guide sheet (22) which is arranged along the accommodating slot (21). Furthermore, a guide groove (23) is formed at an interval between the upper and the lower guide sheets (22) of each of the two lateral walls. In such a case, the guide flanges (121) on the tops of the head parts (12) of the plural screws (1) are slidably connected to the two guide grooves (23) on the two lateral walls of the accommodating slot (21). After the plural screws (1) are filled, they can be used to lock an object.

[0020] In locking the object, a screw die head disposed at a front end of the screw cartridge (2) of the screw gun is in contact with a surface of the object. Then, an end part of a drill rod of the screw gun formed with a single-line () shape or a cross (+) shape is positioned in the bonding groove disposed on the top surface of the guide flange (121) of the head part (12) of the screw (1) and formed with a single-line () shape or a cross (+) shape. In such a case, the plural screws (1) can be driven to rotate by the rotation of the drill rod, continuously pushed by the drill rod, and finally separated from the screw die head at the front end of the screw cartridge (2) to screw into the object.

[0021] After the screw (1) clamped by the screw die head at the front end of the screw cartridge (2) is detached from the screw die head, the next screw (1) in the accommodating slot (21) is pushed forwards by a feeding assembly at a rear end of the screw cartridge (2). By a slidable connection of the guide flange (121) on the top of the head part (12) of the screw (1) to the guide grooves (23) on the two lateral walls of the accommodating slot (21), the screw (1) is smoothly pushed forwards along the guide grooves (23) on the two lateral walls of the accommodating slot (21) to the front end of the screw cartridge (2) for feeding so that the screw (1) fall into the screw die head to be further pushed by the drill rod to screw into the object.

[0022] Accordingly, the design of the guide flange (121) on the tops of their head parts (12) allows the screw (1) of the present invention to be directly filled in the screw cartridge (2) of the screw gun without the use of a screw belt and without the need for inserting plural screws (1) into the screw belt and to be smoothly pushed forwards along the guide grooves (23) on the two lateral walls of the accommodating slot (21) to the front end of the screw cartridge (2) for feeding, which save time and cost, prevent inconvenience in the subsequent screwing operation of the screw gun due to few screws mixing or tilting insertion, and prevent generation of wastes, e.g. a main part of the screw belt.

[0023] Referring to FIG. 5, a stereogram showing a second embodiment for a screw structure according to the present invention is disclosed. The head part (12) of the screw (1) is further provided with a contacting part (123) between the guide flange (121) and the linking part (122). The contacting part (123) has a diameter less than a diameter of the guide flange (121). Additionally, when the plural screws (1) are filled in the accommodating slot (21) of the screw cartridge (2) of the screw gun, the guide flanges (121) on the tops of the head parts (12) of the plural screws (1) are slidably connected to the two guide grooves (23) on the two lateral walls of the accommodating slot (21), and the contacting parts (123) of the head parts (12) are in contact with the guide sheets (22) on the two lateral walls of the accommodating slot (21) so as to further improve the stability of feeding the screws (1).