CN104912892A - Self-drilling screw with convenient replacement function after slipping - Google Patents
Self-drilling screw with convenient replacement function after slipping Download PDFInfo
- Publication number
- CN104912892A CN104912892A CN201510352605.1A CN201510352605A CN104912892A CN 104912892 A CN104912892 A CN 104912892A CN 201510352605 A CN201510352605 A CN 201510352605A CN 104912892 A CN104912892 A CN 104912892A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- screw
- self
- head
- spiral shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title abstract 6
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000010079 rubber tapping Methods 0.000 claims description 50
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 210000004233 talus Anatomy 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
- F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0094—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw the screw being assembled or manufactured from several components, e.g. a tip out of a first material welded to shaft of a second material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a self-drilling screw with a convenient replacement function after slipping. The self-drilling screw comprises a screw rod, the head end of the screw rod is connected with a screw head, the tail end of the screw rod is provided with a drilling tail, the peripheral surface of the screw rod is provided with threads, and the peripheral surface of the screw rod is also provided with a chip groove. The screw rod comprises a first screw rod, the first screw rod is connected with a second screw rod, the head end of the first screw rod is connected with the screw head, the tail end of the first screw rod is provided with a hexagonal groove, the head end of the second screw rod is provided with a connecting boss, the tail end of the second screw rod is provided with the drilling tail, the hexagonal groove is connected with the connecting boss; the screw head comprises a screw umbrella, the screw umbrella is provided with a hexagonal boss, the hexagonal boss is provided with a left-hand threaded hole, the left-hand threaded hole is connected with a left-hand screw, the screw umbrella is also provided with a fixation unit, the head end of the first screw rod is also provided with a sealing blade, and a sealing gasket is arranged between the sealing blade and the screw head. The self-drilling screw provided by the invention has the advantages of high replaceability, lower production cost, high reliability, good sealing performance and good chip removal effect.
Description
Technical field
The present invention relates to a kind of bolt structure, particularly a kind of there is sliding tooth after facilitate the self-tapping screw of replacement function.
Background technique
Self-tapping screw be the afterbody of screw in boring tail or fine stern shape, need not secondary process, can directly at a kind of screw arranging boring on material, basic material, tapping, locking.Its advantage has in use significantly saved the engineering time.Be usually used in building and house etc. field.At present, in production and application, self-tapping screw has following shortcoming: 1) in the application, need be holed and tapping by self-tapping screw, and torsion suffered by it is large, and this torsion easily makes the hexagonal boss of spiral shell head damage, thus after causing sliding tooth is difficult to this screw to take out replace; 2) self-tapping screw is higher to the hardness requirement boring stern construction, and it is relatively low to the hardness requirement of other structures, but current self-tapping screw is integral type structure, hardness can only be improved to self-tapping screw entirety, although make the hardness of boring stern construction reach requirement, but fail self-tapping screw structure is optimized, integrally-built for self-tapping screw hardness is improved, can cost of production be increased; 3) in vibration strongly and frequently structure, use self-tapping screw, self-tapping screw can be caused to occur loosening because of long-time judder, thus affect stability and the reliability of this structure; 4) current self-tapping screw, when boring and tapping, claps bits poor effect.
Summary of the invention
The object of the invention is to, provide a kind of there is sliding tooth after facilitate the self-tapping screw of replacement function.The present invention has, and replaceability is strong, and reduce cost of production, reliability is high, and effective feature is considered in good airproof performance and bat to be worth doing.
Technological scheme of the present invention: a kind of there is sliding tooth after facilitate the self-tapping screw of replacement function, comprise screw rod, the head end of screw rod is connected with spiral shell head, and the tail end of screw rod is provided with brill tail, and the circumferential surface of screw rod is provided with screw thread, and the circumferential surface of screw rod is also provided with groove; Described screw rod comprises the first screw rod, and the first screw rod is connected with the second screw rod; The first described screw rod head end is connected with spiral shell head, and the tail end of the first screw rod is provided with hexagonal groove; The second described screw rod head end is provided with connection boss, and the second screw rod tail end end is provided with brill tail; Described hexagonal groove be connected boss and connect; Described spiral shell head comprises spiral shell umbrella, and spiral shell umbrella is provided with hexagonal boss, and hexagonal boss is provided with anti-pitch thread hole, and anti-pitch thread hole is connected with anti-tooth screw; Described spiral shell umbrella is also provided with fixed unit; The first described screw rod head end is also provided with sealing blade, is provided with seal washer between sealing blade and spiral shell head; The width W of described sealing blade equals the outer diameter D of 0.8 ~ 1 times of seal washer.
Aforesaid there is sliding tooth after facilitate in the self-tapping screw of replacement function, described fixed unit comprises via hole, is provided with set screw in via hole.
Compared with prior art, spiral shell head of the present invention is provided with hexagonal boss and anti-pitch thread hole, in application, if hexagonal boss damages because torsion is excessive occur sliding tooth, anti-tooth screw is oppositely screwed in anti-pitch thread hole, and continue the anti-tooth screw of counterrotating, the self-tapping screw sliding tooth is oppositely screwed out, replaces new self-tapping screw afterwards again and use; The replaceability after damaging is stronger by this structure, self-tapping screw to be occurred.The present invention is split-type structural, screw rod is divided into the first screw rod and the second screw rod, and the hexagonal groove of the first screw rod and the connection boss of the second screw rod connect, and the head end of the first screw rod is connected with spiral shell head; By this structure, be connected with the first screw rod again after separately the brill tail hardness of the second screw rod can being strengthened, self-tapping screw structure be optimized, and only need carry out hardness strengthening to the second screw rod of self-tapping screw, and without the need to strengthening self-tapping screw integral hardness, effectively reduce cost of production.The present invention is also provided with fixed unit on spiral shell umbrella, when after self-tapping screw locking, then is locked by the set screw of fixed unit; By this structure, vibrate strongly and frequently structure uses self-tapping screw time, avoid self-tapping screw and cause loosening because long-time judder occurs reverse rotation, thus improve the reliability of self-tapping screw.The present invention arranges sealing blade at the first screw rod head end, arranges seal washer between sealing blade and spiral shell head; By this structure, when self-tapping screw drilling-tapping to sealing blade position time, sealing blade start boring, when spiral shell umbrella bottom surface and the fixed block surface contact of self-tapping screw, what complete self-tapping screw screws installation action; Because of W=0.8 ~ 1 D, the diameter sealing the hole that blade bores is made to be slightly less than the outer diameter D of seal washer, thus force seal washer to be compressed in the sealing blade hole of boring and the gap in this hole is filled up, so just make self-tapping screw after piercing fixed block, better tightness.The present invention is also provided with groove on the circumferential surface of screw rod; By this structure, by the chip that produces when self-tapping screw boring and tapping along outside groove tap hole, it is effective that it claps bits, avoids in hole, to cause boring because of talus accumulation and tapping efficiency is low and affect and hole and the situation of tapping effect simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of the first screw rod;
Fig. 3 is the structural representation of the second screw rod;
Fig. 4 is the structural representation that spiral shell head is connected with the first screw rod.
Being labeled as in accompanying drawing: 1-screw rod, 2-spiral shell head, 3-bores tail, 4-screw thread, 5-groove, 6-first screw rod, 7-second screw rod, 8-hexagonal groove, 9-connects boss, 10-spiral shell umbrella, 11-hexagonal boss, the anti-pitch thread hole of 12-, 13-fixed unit, 14-via hole, 15-set screw, the anti-tooth screw of 16-, 17-seals blade, 18-seal washer.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated, but not as the foundation limited the present invention.
Embodiment.Facilitate a self-tapping screw for replacement function after there is sliding tooth, form as Figure 1-4, comprise screw rod 1, the head end of screw rod 1 is connected with spiral shell head 2, the tail end of screw rod 1 is provided with and bores tail 3, and the circumferential surface of screw rod 1 is provided with screw thread 4, and the circumferential surface of screw rod 1 is also provided with groove 5; Described screw rod 1 comprises the first screw rod 6, first screw rod 6 and is connected with the second screw rod 7; The first described screw rod 6 head end is connected with spiral shell head 2, and the tail end of the first screw rod 6 is provided with hexagonal groove 8; The second described screw rod 7 head end is provided with connection boss 9, second screw rod 7 tail end end and is provided with brill tail 3; Described hexagonal groove 8 be connected boss 9 and connect; Described spiral shell head 2 comprises spiral shell umbrella 10, and spiral shell umbrella 10 is provided with hexagonal boss 11, and hexagonal boss 11 is provided with anti-pitch thread hole 12, and anti-pitch thread hole 12 is connected with anti-tooth screw 16; Described spiral shell umbrella 10 is also provided with fixed unit 13; The first described screw rod 6 head end is also provided with sealing blade 17, is provided with seal washer 18 between sealing blade 17 and spiral shell head 2; The width W of described sealing blade 17 equals the outer diameter D of 0.8 ~ 1 times of seal washer 18; The second described screw rod 7 can use high hardness material to increase its hardness.
Aforesaid fixed unit 13 comprises via hole 14, is provided with set screw 15 in via hole 14.
Working principle of the present invention is, the screw screwdriver bit of screw gun is enclosed within the hexagonal boss 11 of self-tapping screw, start screw gun self-tapping screw is screwed, in screwing operations, chip outside groove 5 tap hole, when self-tapping screw drilling-tapping to sealing blade 17 position time, sealing blade 17 start boring, when spiral shell umbrella 10 bottom surface and the fixed block surface contact of self-tapping screw, what complete self-tapping screw screws installation action; After screwing, then set screw 15 is screwed, avoid loosening.When screwing self-tapping screw, if hexagonal boss 11 because of torsion excessive damaged and occur sliding dental phenomenon, anti-tooth screw 16 is oppositely screwed in anti-pitch thread hole 12, after being screwed into, continue the anti-tooth screw 16 of counterrotating, the self-tapping screw now damaged oppositely screws out, and after screwing out, replaces new self-tapping screw and screws in.
Claims (2)
1. one kind there is sliding tooth after facilitate the self-tapping screw of replacement function, it is characterized in that: comprise screw rod (1), the head end of screw rod (1) is connected with spiral shell head (2), the tail end of screw rod (1) is provided with and bores tail (3), the circumferential surface of screw rod (1) is provided with screw thread (4), the circumferential surface of screw rod (1) is also provided with groove (5); Described screw rod (1) comprises the first screw rod (6), and the first screw rod (6) is connected with the second screw rod (7); Described the first screw rod (6) head end is connected with spiral shell head (2), and the tail end of the first screw rod (6) is provided with hexagonal groove (8); Described the second screw rod (7) head end is provided with and connects boss (9), and the second screw rod (7) tail end end is provided with and bores tail (3); Described hexagonal groove (8) be connected boss (9) and connect; Described spiral shell head (2) comprises spiral shell umbrella (10), and spiral shell umbrella (10) is provided with hexagonal boss (11), and hexagonal boss (11) is provided with anti-pitch thread hole (12), and anti-pitch thread hole (12) is connected with anti-tooth screw (16); Described spiral shell umbrella (10) is also provided with fixed unit (13); Described the first screw rod (6) head end is also provided with sealing blade (17), is provided with seal washer (18) between sealing blade (17) and spiral shell head (2); The width W of described sealing blade (17) equals the outer diameter D of 0.8 ~ 1 times of seal washer (18).
2. according to claim 1 there is sliding tooth after facilitate the self-tapping screw of replacement function, it is characterized in that: described fixed unit (13) comprises via hole (14), is provided with set screw (15) in via hole (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510352605.1A CN104912892A (en) | 2015-06-24 | 2015-06-24 | Self-drilling screw with convenient replacement function after slipping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510352605.1A CN104912892A (en) | 2015-06-24 | 2015-06-24 | Self-drilling screw with convenient replacement function after slipping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104912892A true CN104912892A (en) | 2015-09-16 |
Family
ID=54082249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510352605.1A Pending CN104912892A (en) | 2015-06-24 | 2015-06-24 | Self-drilling screw with convenient replacement function after slipping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104912892A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1509366A (en) * | 2001-05-30 | 2004-06-30 | �����ɷ� | Cutting screw |
| CN200946622Y (en) * | 2006-09-07 | 2007-09-12 | 庄淑云 | Adjusting screw for drilling and locking metal article |
| WO2007134361A1 (en) * | 2006-05-19 | 2007-11-29 | Itw Australia Pty Ltd | Clearance hole cutting screw |
| CN101198798A (en) * | 2005-06-16 | 2008-06-11 | 尤利·沃尔瑟 | Screw for use in concrete |
| CN201100293Y (en) * | 2007-11-01 | 2008-08-13 | 至盈实业股份有限公司 | Screw |
| CN201176994Y (en) * | 2008-02-19 | 2009-01-07 | 突河·雷 | Improved self-tapping bolt structure |
| CN201827207U (en) * | 2010-09-15 | 2011-05-11 | 侑城股份有限公司 | Wave board screw |
| CN203516393U (en) * | 2013-10-30 | 2014-04-02 | 威德车业部件有限公司 | Screw |
| CN204267495U (en) * | 2014-10-23 | 2015-04-15 | 富阳市万力金属型材有限公司 | A kind of antirust easy replacing rim bolt |
| CN204878214U (en) * | 2015-06-24 | 2015-12-16 | 贵州省华科实业有限公司 | Can convenient brill tail screw of replacing behind smooth tooth |
-
2015
- 2015-06-24 CN CN201510352605.1A patent/CN104912892A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1509366A (en) * | 2001-05-30 | 2004-06-30 | �����ɷ� | Cutting screw |
| CN101198798A (en) * | 2005-06-16 | 2008-06-11 | 尤利·沃尔瑟 | Screw for use in concrete |
| WO2007134361A1 (en) * | 2006-05-19 | 2007-11-29 | Itw Australia Pty Ltd | Clearance hole cutting screw |
| CN200946622Y (en) * | 2006-09-07 | 2007-09-12 | 庄淑云 | Adjusting screw for drilling and locking metal article |
| CN201100293Y (en) * | 2007-11-01 | 2008-08-13 | 至盈实业股份有限公司 | Screw |
| CN201176994Y (en) * | 2008-02-19 | 2009-01-07 | 突河·雷 | Improved self-tapping bolt structure |
| CN201827207U (en) * | 2010-09-15 | 2011-05-11 | 侑城股份有限公司 | Wave board screw |
| CN203516393U (en) * | 2013-10-30 | 2014-04-02 | 威德车业部件有限公司 | Screw |
| CN204267495U (en) * | 2014-10-23 | 2015-04-15 | 富阳市万力金属型材有限公司 | A kind of antirust easy replacing rim bolt |
| CN204878214U (en) * | 2015-06-24 | 2015-12-16 | 贵州省华科实业有限公司 | Can convenient brill tail screw of replacing behind smooth tooth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150916 |