CN109780027A - Wing drilling tail self-tapping screw - Google Patents

Abstract

The invention discloses a kind of wing drilling tail self-tapping screw, it includes there is a screw head, one by the outwardly extending body of rod of the screw head, the more threads being set on the body of rod, and one is set to the brill lock section of the body of rod end, and at least one is set to reaming part on the brill lock section；Wherein, an at least reinforced ribs are provided on the reaming part, to promote the intensity of the reaming part, so that the reaming part Yu Suoshe process is born biggish lock and sets stress, outside preferable rotary-cut ability, the rotary-cut situation that generation is worn or is broken in the process is avoided, it is separately elastic in can also make the reaming part that there is bigger thickness to manufacture in production, more increase the preferable cutting speed performance that can reach carried out by the reaming part preferred thickness in use, while not influencing the brill lock ability of the wing drilling tail self-tapping screw.

Description

Wing drilling tail self-tapping screw

Technical field

The present invention relates to screw technical fields, particularly relate to a kind of wing drilling tail self-tapping screw.

Background technique

Refering to fig. 1, known wing drilling tail self-tapping screw 1 has a screw head 11, and one by the outwardly extending body of rod of screw head 11 12, more helical rings are set to the thread 13 on the body of rod 12, and one symmetrically sets set on the brill lock section 14 of 12 end of the body of rod and two Reaming part 15 on the brill lock section 14.

Known wing drilling tail self-tapping screw 1 in use, it is used to be used the sealed secure bond of timber A on iron plate B, That is, the wing drilling tail self-tapping screw 1 first presses on the brill lock section 14 on the surface timber A, and bestows a rotation in the screw head 11 Turn power, drive the brill lock section 14 cutting timber A formed a locking holes 21, while the reaming part 15 will along the brill lock section 14 into Enter in the locking holes 21 and carry out reaming, enters in the locking holes 21 under so that the thread 13 is not hindered by timber A, at this time The brill lock section 14 also can be successfully sealed for iron plate B progress, until when the reaming part 15 is locked to iron plate B, the reaming part 15 It can will be broken off after touching iron plate B, the thread 13 is enable to continue into iron plate B, and smoothly by timber A It is fixed on iron plate B.

Just because of aforementioned sealed relationship, thus the thickness of the reaming part 15 when being controlled in manufacture with regard to extremely important, when the reaming When 15 forming process of part leads to thickness deficiency, which is be easy to cause during timber A lock is set, because endurance is insufficient And produce fracture (ginseng Fig. 2 shown in), cause the reaming part 15 can not be successfully ream operation is carried out on timber A, cause to cut Bits lodge in outer between the thread 13, and the thread 13 or generate sealed phenomenon with timber A, can so slow down the wing drilling tail Revolving speed is locked in the rotation of self-tapping screw 1；In addition, when thickness is blocked up, although reaming can be carried out on timber A, when lock is set to this When iron plate B, because 15 intensity of reaming part is excessive, so that the reaming part 15 can not be broken, and state shown in Fig. 3 is formed, so It will make the wing drilling tail self-tapping screw 1 that can not be revolved by the reaming part 15 influence to be locked into influencing the wing drilling tail self-tapping screw 1 It is sealed.

However, the manufacture of the current reaming part 15, mainly by two molds (not shown) together with the brill lock section 14, reaming part 15 is stamped to form together, to be extended outward using 12 part in compression of the body of rod, and shape the drilling tail 14 with it is described Reaming part 15, and whether the reaming part 15 can smoothly shape, and mainly depend on the gap adjustment between the mold, it is suitable to shape When thickness and have the reaming part 15 of certain use intensity for using, but is to influence subsequent lock in view of 15 intensity of reaming part The key of conjunction, therefore the molding thickness precision prescribed of the reaming part 15 is very high, and the reaming part 15 will be caused when thickness deficiency Intensity not foot phenomenon is reviewed and increases by 15 intensity of reaming part, and tends to cause 15 thickness of reaming part blocked up, leads to the expansion The situation not easy to break of orifice 15, and influence subsequent sealed；Furthermore the reaming part 15 and the brill lock section 14 are all outside by the body of rod 12 Elongation moulding represents the 15 materials relative increase of reaming part, so that 14 materials of brill lock section when 15 thickness of reaming part increases It reduces, and the intensity for reducing the brill lock section 14 needs to improve in fact.

Summary of the invention

The purpose of the present invention is to provide a kind of wing drilling tail self-tapping screws with quick lock.

Based on this, the present invention mainly uses utilising techniques, Lai Shixian above-mentioned purpose.

A kind of wing drilling tail self-tapping screw includes: a screw head, and one is set by the outwardly extending body of rod of the screw head, more rings Thread on the body of rod, one is set to the brill lock section of the body of rod end, and at least one is set to reaming part on the brill lock section； Wherein, which has a drill body to connect with the body of rod, and one forms in the drill lip of the drill body end, and two are opened in this respectively It is divided into the chip removal flute of two opposite side on drill body and by the drill lip, and is respectively formed in the cutting of the chip removal flute Yu the drill body joint Sword；The reaming part is extended outwardly by the drill body, and the reinforced ribs of at least reinforcement reaming part intensity are provided on the reaming part.

Further, which is extended outward by the direction of the drill body.

After above-mentioned technological means, wing drilling tail self-tapping screw of the present invention is designed by the structure of reaming part, the reaming Part is extended outwardly by the drill body, and an at least reinforced ribs are provided on the reaming part, can be effective by the design of the reinforced ribs The intensity of the reaming part is promoted, the preferable cutting speed performance carried out by the reaming part preferred thickness can be reached, so that the reaming part It avoids generating during drilling timber and the situations such as wears or be broken, while it is subsequent to iron plate not influence the wing drilling tail self-tapping screw Brill lock ability.

Detailed description of the invention

Fig. 1 is the schematic diagram of known wing drilling tail self-tapping screw.

Fig. 2, Fig. 3 are the brill lock status schematic diagram of known wing drilling tail self-tapping screw

Fig. 4 is a preferred embodiment of the present invention schematic diagram.

Fig. 5 to Fig. 7 is a preferred embodiment of the present invention action schematic diagram.

[symbol description]

(known)

1 wing drilling tail self-tapping screw

11 screw head, 12 body of rod

13 threads 14 bore lock section

15 reaming part A timber

21 locking holes of B iron plate

(present invention)

3 wing drilling tail self-tapping screws

31 screw head, 32 body of rod

33 threads 34 bore lock section

35 reaming part, 36 reinforced ribs

341 drill body, 342 drill lip

343 chip removal flute, 344 cutting edge

4 timber, 5 iron plate

41 locking holes.

Specific embodiment

For the present invention aforementioned and other technology contents, feature and effect refer to the preferable reality of schema in following cooperation It applies in the detailed description of example, can clearly understand.

Refering to Fig. 4, it includes there is a screw head 31, one is extended outwardly wing drilling tail self-tapping screw 3 of the present invention by the screw head 31 The body of rod 32, the more threads 33 being set on the body of rod 32, one is set to the brill lock section 34 of 32 end of the body of rod, and at least one set The reaming part 35 being placed on the brill lock section 34；Wherein, the brill lock section 34 have a drill body 341 to connect with the body of rod 32, one one-tenth For shape in the drill lip 342 of 341 end of drill body, two are opened on the drill body 341 respectively and are divided into the drill lip 342 row of two opposite side It considers ditch 343 to be worth doing, and is respectively formed in the cutting edge 344 of the chip removal flute 343 Yu 341 joint of drill body；In addition, the reaming part 35 by The drill body 341 extends outwardly, and a reinforced ribs 36 are at least convexly equipped on the reaming part 35, which is mainly set to the expansion On the surface of orifice 35, and the reinforced ribs 36 are extended outward by the direction of the drill body 341, and the reinforced ribs 36 in the present embodiment figure The reaming part 35 is extended to by the bits ditch 343 by the drill body 341, and in the present embodiment, it is to be provided with two reaming parts 35 Example indicates.

Refering to Fig. 4, Fig. 5, the wing drilling tail self-tapping screw 3 in use, by an object lock set a ferropexy object (such as reinforcing bar or Iron plate) on used, and this implementation is following is illustrated by taking timber 4 and iron plate 5 as an example, first passes through the drill body 341 and presses on On the timber 4, and after bestowing a rotary force, using the cutting edge 344 in cutting a locking holes 41 on the timber 4 and enter should In timber 4, while the locking holes 41 are carried out reaming by the reaming part 35, and because being provided with the reinforced ribs on the reaming part 35 36, even if therefore when the reaming part 35 is made thinner, other than the sharpness of the reaming part 35 can be promoted, increase to the timber 4 Cutting power, while the reinforced ribs 36 are also opposite supports the reaming part 35, therefore the intensity of the reaming part 35 can be made to increase, and make this The timber 4 smoothly can be cut and be carried out reaming by reaming part 35；Cooperation is refering to Fig. 6, Fig. 7, when the reaming part 35 When touching the iron plate 5, since 5 hardness of iron plate is much larger than the hardness of the timber 4, in addition the reaming part 35 design is upper relatively thin, And the reinforced ribs 36 are extended outward by the direction of the body of rod 32 and account for 35 area of reaming part, therefore are touching this It can be produced fracture when iron plate 5, with sealed on the sharp brill the lock section 34 persistently iron plate 5, and allow the subsequent thread 33 can be closely It is combined with the iron plate 5, reaches optimal locking effect.

Furthermore when reinforcing reaming 35 intensity of part by the reinforced ribs 36, the 35 Yu Xuansuo process of reaming part can be made to increase Locking sets stress, reduces that 35 thickness of the reaming part is insufficient and generated intensity deficiency problem, the reaming part 35 lock is avoided to set wood The situation that material 4 is just broken in the process, therefore the reaming part 35 is elastic in manufacturing in manufacture with bigger thickness, that is, the reaming part 35 thickness are able to do thinner, are increased outside cutting speed, but do not lose intensity needed for it cuts the timber 4, as this When the lock of reaming part 35 sets the iron plate 5, it is beneficial to the disengaging of the reaming part 35；Furthermore only increase this by the reinforced ribs 36 When reaming part intensity, also relatively known increased materials of 35 thickness of reaming part by monolith are less, therefore also ensure that the brill is locked 34 materials of portion are not greatly decreased because of reinforced ribs 36, also can ensure that the whole intensity in the brill lock section 34, effectively promote the wing Drilling tail self-tapping screw 3 bores lock ability and the quality of production.

Conclude aforementioned, wing drilling tail self-tapping screw of the present invention is by being provided with an at least reinforced ribs on the reaming part 35 36, and the reinforced ribs 36 are extended outward by the direction of the body of rod 32 can effectively promote the intensity of the reaming part 35, make the reaming 35 Yu Suoshe process of part can bear biggish lock and set stress, promote the reaming part 35 manufacture to do with bigger elasticity thinner, Intensity needed for still can reach drilling timber and avoid there may be abrasion or fracture etc. missing, it is ensured that the wing drilling tail self-tapping screw 3 sealed effect.

The above only illustrates presently preferred embodiments of the present invention, when cannot limit the model implemented of the present invention with this It encloses, i.e., it is all according to simple equivalent changes and modifications made by scope of the present invention patent and description of the invention content, it all should be still It remains within the scope of the patent.

Claims (2)

1. a kind of wing drilling tail self-tapping screw, includes: a screw head, one by the outwardly extending body of rod of the screw head, and more are located on Thread on the body of rod, one is set to the brill lock section of the body of rod end, and at least one is set to reaming part on the brill lock section；Its In, which has a drill body to connect with the body of rod, and one forms in the drill lip of the drill body end, and two are opened in the brill respectively It is divided into the chip removal flute of two opposite side on body and by the drill lip, and is respectively formed in the cutting of the chip removal flute Yu the drill body joint Sword；It is characterized by:

The reaming part is extended outwardly by the drill body, and the reinforcement of at least reinforcement reaming part intensity is provided on the reaming part Rib.

2. wing drilling tail self-tapping screw according to claim 1, it is characterised in that: the reinforced ribs from the direction of the drill body toward Outer extension.