TWM515600U - Screw structure with fast bit - Google Patents

Description

Screw structure with fast drill bit

This creation is about a screw structure, especially a screw structure with a fast drill bit.

Press, the screw is a fairly basic and commonly used hardware product in life, widely used in the purpose of fixing or combining articles. One of the drill screws can be used as a fast attack in the case where the screw hole cannot be preset. Into the workpiece and screw lock. As shown in the tenth figure, it is a conventional self-drilling screw. The self-drilling screw A2 comprises: a screw head 3 and a rod body 4, the screw head 3 is used for contacting the tool, and the rod body 4 is composed of The screw head 3 is extended, and the rod body 4 is disposed at a distal end of the screw head 3, and a drill portion 41 is disposed. The end of the drill bit 41 is provided with a tapered portion 411, and two symmetric chip flutes 412 are disposed on the circumference to extend to the tapered portion 411. The two symmetrical flutes 412 are respectively formed with the tapered portion 411 and the periphery of the drill bit 41 to form two drill cutting edges 413 and two cutting edges 414 respectively. The two cutting cutting edges 413 intersect at the center to form a drill tip 415. The fourth peripheral edge is provided with a screw 42 spirally wound by the drill bit 41 in the direction of the screw head 3. When the screwing operation is performed, the workpiece is drilled by the drilling cutting edge 413 and the cutting edge 414, and the guiding screw 42 is gradually locked in, while the chips generated during the drilling process are traversed by the chip discharging groove 412 along the tail end of the drill. 41 Move up and discharge, so that the screw A2 can successfully complete the screw lock.

However, the drill tail screw A2 is grounded on the surface of the workpiece by the drill tip 415 at the center before the two drill cutting edges 413 formally drill the workpiece, and the screw A2 is rotated by the tool. In the rotating state, the drill tip 415 is worn or inserted into the workpiece, and the cutting edge 413 and the cutting edge 414 can be used for subsequent drilling operations, so that the cutting effect at the beginning of drilling is poor, resulting in a slow and laborious screw locking speed. And since there is only one drill point 415, it is impossible to fix the position, and it is easy to cause a positional error when the screw is locked.

The creator has the shortcomings of slow screw thread, laborious force and screw lock position, which is easy to produce errors. It is the idea of creation and trial, and the design and test sample test, and multiple corrections. After the improvement, I finally designed this creation.

The present invention provides a screw structure with a quick drill, wherein the screw rotates in a direction of rotation, and the rotation direction of the screw is reversed. The screw includes: a screw head and a rod body, the screw The head system is connected to the tool, the rod system is extended by the screw head, the rod body is provided with a drill bit away from one end of the screw head, a taper portion is arranged at the end of the drill bit, and the end of the taper portion is provided at the center of the taper portion. The at least two drill tips are provided with a blade portion in the forward rotation direction, and a reinforcing portion is disposed in the reverse direction, and the drill edge is provided with at least two chip flutes extending to at least two drill tips of the taper portion. Forming at least two cutting edges and at least two cutting edges respectively, the at least two chip flutes intersecting the tapered portion and the periphery of the drill bit, and the cutting edge of the cutting edge and the cutting cutting edge may be at the same angle or different angles Then, the periphery of the rod body is provided with a screw thread spirally wound by the drill bit in the direction of the screw head.

The main purpose of the creation is that when the screw is screwed, at least two drill tips which are staggered at the end of the taper of the drill bit are in contact with the surface of the workpiece, and the tool is driven to rotate the screw, so that the at least two drill tips are The blade is quickly drilled into the surface of the workpiece so that the cutting edge and the cutting edge are followed by subsequent drilling operations, and the screw locking speed is fast and labor-saving.

The second purpose of the present invention is to provide at least two drill tips at the end of the taper of the drill bit. When the screw is screwed, the at least two drill tips can be used to locate on the surface of the workpiece, and the blade portion is drilled into the surface of the workpiece. To achieve stable positioning, the advantage of position error is not easy to generate when the screw is locked.

[study]

A2‧‧‧Drilling screws

3‧‧‧ screw head

4‧‧‧ rod body

41‧‧‧ drill bit

411‧‧‧ Cone

412‧‧‧ chip flute

413‧‧‧Drilling cutting edge

414‧‧‧ cutting edge

415‧‧‧ drill tip

42‧‧‧ threaded teeth

[this creation]

A1‧‧‧ screws

A3‧‧‧Workpiece

1‧‧‧ screw head

2‧‧‧ rod body

21‧‧‧ drill bit

211‧‧‧ Cone

212‧‧‧ drill tip

2121‧‧‧blade

2122‧‧‧Reinforcement Department

213‧‧‧ chip flutes

214‧‧‧Drilling cutting edge

215‧‧‧ cutting edge

22‧‧‧ threaded teeth

The first picture is a perspective view of the creation.

The second figure is an enlarged view of the portion A of the first figure.

The third picture is the plan of the creation.

The fourth figure is an enlarged view of part B of the third figure.

The fifth picture is an end view of the creation.

The sixth figure is a schematic plan view of the positioning of the present invention when the screw is locked.

The seventh figure is an enlarged view of part C of the sixth figure.

The eighth drawing is a plan view of another embodiment of the present creation.

The ninth figure is an enlarged view of the portion D of the eighth drawing.

The tenth figure is a perspective view of a conventional drill-tail screw.

Please refer to the first figure, the second figure, the third figure, the fourth figure and the fifth figure. The creation has a screw structure of a fast drill bit, and the rotation direction of the screw A1 is a forward rotation direction, and the screw A1 is loosened. The revolving direction is a reverse direction, and the screw A1 includes: a screw head 1 and a rod body 2, wherein the screw head 1 is connected to the tool, and the rod body 2 is integrally formed by the screw head 1 The rod body 2 is disposed away from one end of the screw head 1 and is provided with a drill bit 21, and a tip portion 211 is disposed at the end of the drill bit 21, The two ends of the taper portion 211 are provided with a staggered two drill tips 212. The two drill tips 212 are disposed at equal heights. The two drill tips 212 are provided with a blade portion 2121 in the forward direction and a reinforcing portion 2122 in the reverse direction. The two ends of the drill bit 21 are provided with two fluted slots 213 extending to the two drill tips 212 of the tapered portion 211. The two flutes 213 are formed at the periphery of the tapered portion 211 to form two drill cutting edges 214. The cutting edge 213 is formed at the periphery of the periphery of the drill bit 21 to form two cutting edges 215. The blade portion 2121 of the drill tip 212 and the cutting edge 214 are at the same angle, and the periphery of the rod body 2 is provided by the drill bit 21 The screw head 1 spirally surrounds the thread 22.

When in use, as shown in the sixth and seventh figures, the two drill tips 212, which are staggered at the ends of the taper portions 211 of the drill A1, are in contact with the surface of the workpiece A3, and the tool and the screw A1 head 1 are fitted or clamped. When the tool is driven, the screw A1 is rotated in the forward rotation direction, so that the blade portion 2121 of the two drill tips 212 is instantaneously cut into the surface of the workpiece A3, so that the drill cutting edge 214 and the cutting edge 215 of the drill bit 21 are subsequently followed. Drilling action, fast and labor-saving screw lock operation of screw A1.

Furthermore, the present invention has a screw structure of a quick drill bit, and the blade portion 2121 of the drill tip 212 and the drill cutting edge 214 are connected at the same angle as described above, and can also be drilled as shown in the eighth and ninth drawings. The blade portion 2112 of the tip 212 and the cutting edge 214 are disposed to meet at different angles.

Moreover, the present invention has a screw structure of a quick drill bit, and the taper portion 211 of the drill bit 21 can be provided with two drill tips 212 or more, in addition to the two drill tips 212 disposed above, and the chip flutes 213 and the cutting edges 214 and The cutting edges 215 are set to a corresponding number.

From the structure of the above specific embodiment, the following benefits can be obtained:

1. The present invention has a screw structure with a fast drill bit. When the screw A1 is screwed, at least two drill tips 212 staggered at the end of the taper portion 211 of the drill bit 21 are in contact with the surface of the workpiece A3. Positioning, in a state in which the tool drives the screw A1 to rotate, the at least two drill tips 212 are instantaneously cut into the surface of the workpiece A3 by the blade portion 2121, and the two drill points 212 are prevented from collapsing by the reinforcing action of the reinforcing portion 2122, so that The cutting edge 214 and the cutting edge 215 are then subjected to subsequent drilling operations, and the screw locking speed is fast and labor-saving.

2. The present invention has a screw structure with a quick drill bit, and the end of the taper portion 211 of the drill bit 2 is provided with at least two drill tips 212 which are staggered. When the screw A1 is screwed, the at least the drill tip 212 can be used to resist the positioning on the surface of the workpiece A3. The blade portion 2121 is smoothly cut and drilled into the surface of the workpiece A3, and the positioning is stabilized when the screw is locked, and the screw A1 is not easy to produce a position error.

In summary, this creation has indeed reached a breakthrough structure, and has improved content of creation, while at the same time achieving industrial use and progress. When complying with the provisions of the Patent Law, it proposes a new type of patent application according to law. The census review committee granted legal patent rights and was praying.

A1‧‧‧ screws

21‧‧‧ drill bit

211‧‧‧ Cone

212‧‧‧ drill tip

2121‧‧‧blade

2122‧‧‧Reinforcement Department

213‧‧‧ chip flutes

214‧‧‧Drilling cutting edge

215‧‧‧ cutting edge

Claims (5)

The utility model relates to a screw structure with a fast drill bit, wherein the rotation direction of the screw lock is a forward rotation direction, and the rotation direction of the screw is reversed, and the screw comprises: a screw head for connecting with the tool; The rod body is extended by the screw head, the rod body is provided with a drill bit away from one end of the screw head, the drill bit is provided with a taper end, and the end of the taper portion is provided with at least two drill tips which are staggered, the at least two drill points a blade portion is disposed in the forward direction, and a reinforcing portion is disposed in the reverse direction, and the periphery of the drill bit is provided with at least two chip flutes extending to at least two drill tips of the taper portion, and the at least two chip flutes are opposite to the taper portion and the periphery of the drill bit The joints respectively form at least two cutting edges and at least two cutting edges, and the cutting edge of the cutting point is in contact with the cutting cutting edge, and the periphery of the rod body is provided with a screw thread spirally wound by the drill bit toward the screw head. A screw structure having a quick drill bit according to claim 1, wherein the at least two drill tips are disposed at an off-center of the taper of the drill bit. A screw structure having a quick drill bit as described in claim 1, wherein the at least two drill tips are of equal height setting. A screw structure having a quick drill bit according to claim 1, wherein the blade edge of the drill tip is in contact with the cutting edge at the same angle. A screw structure having a quick drill bit according to claim 1, wherein the blade edge of the drill tip and the cutting edge are joined at different angles.