CN104948556A - Drill tail screw with good sealing performance and strong replaceability - Google Patents
Drill tail screw with good sealing performance and strong replaceability Download PDFInfo
- Publication number
- CN104948556A CN104948556A CN201510352666.8A CN201510352666A CN104948556A CN 104948556 A CN104948556 A CN 104948556A CN 201510352666 A CN201510352666 A CN 201510352666A CN 104948556 A CN104948556 A CN 104948556A
- Authority
- CN
- China
- Prior art keywords
- screw
- screw rod
- spiral shell
- self
- umbrella
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 28
- 238000010079 rubber tapping Methods 0.000 claims description 43
- 230000000694 effects Effects 0.000 abstract description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004519 manufacturing process 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
-
- 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
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a drill tail screw with good sealing performance and strong replaceability. The drill tail screw with the good sealing performance and the strong replaceability 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 drill tail, and the circumferential surface of the screw rod is provided with a thread and a chip removal slot; the screw head comprises a screw umbrella which is provided with a hexagonal boss, and the hexagonal boss is provided with a left-hand threaded hole which is connected with a left-hand thread screw; the screw umbrella is further provided with a fixing unit, the head end of the screw head is further provided with a sealing blade, a sealing washer is arranged between the sealing blade and the screw umbrella, and the width W of the sealing blade is equal to 0.8-1 time of the outer diameter D of the sealing washer. The drill tail screw with the good sealing performance and the strong replaceability has the advantages of being good in sealing performance, strong in replaceability, high in reliability and good in chip removal effect.
Description
Technical field
The present invention relates to a kind of bolt structure, particularly a kind of good airproof performance and replace strong self-tapping screw.
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) self-tapping screw by spiral shell umbrella directly and fixed block surface contact seal, its sealing effect is not good; 2) in the application, need be holed and tapping by self-tapping screw, 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; 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, a kind of good airproof performance is provided and replaces strong self-tapping screw.The present invention has, good airproof performance, and replaceability is strong, and reliability is high and clap the effective feature of bits.
Technological scheme of the present invention: a kind of good airproof performance and replace strong self-tapping screw, 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 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; Described screw rod head end is also provided with sealing blade, is provided with seal washer between sealing blade and spiral shell umbrella; The width W of described sealing blade equals the outer diameter D of 0.8 ~ 1 times of seal washer.
Aforesaid good airproof performance and replace in strong self-tapping screw, described fixed unit comprises via hole, is provided with set screw in via hole.
Compared with prior art, the present invention arranges sealing blade at screw rod head end, arranges seal washer between sealing blade and spiral shell umbrella; 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.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 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 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 that spiral shell head is connected with 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, 6-spiral shell umbrella, 7-hexagonal boss, the anti-pitch thread hole of 8-, the anti-tooth screw of 9-, 10-fixed unit, 11-seals blade, 12-seal washer, 13-via hole, 14-set screw.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated, but not as the foundation limited the present invention.
Embodiment.Good airproof performance and replace a strong self-tapping screw, form as shown in Figure 1-2, comprise screw rod 1, the head end of screw rod 1 is connected with spiral shell head 2, and the tail end of screw rod 1 is provided with brill 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 spiral shell head 2 comprises spiral shell umbrella 6, and spiral shell umbrella 6 is provided with hexagonal boss 7, and hexagonal boss 7 is provided with anti-pitch thread hole 8, and anti-pitch thread hole 8 is connected with anti-tooth screw 9; Described spiral shell umbrella 6 is also provided with fixed unit 10; Described screw rod 1 head end is also provided with sealing blade 11, is provided with seal washer 12 between sealing blade 11 and spiral shell umbrella 6; The width W of described sealing blade 11 equals the outer diameter D of 0.8 ~ 1 times of seal washer 12.
Aforesaid fixed unit 10 comprises via hole 13, is provided with set screw 14 in via hole 13.
Working principle of the present invention is, the screw screwdriver bit of screw gun is enclosed within the hexagonal boss 7 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 11 position time, sealing blade 11 start boring, when spiral shell umbrella 6 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 14 is screwed, avoid loosening.When screwing self-tapping screw, if hexagonal boss 7 because of torsion excessive damaged and occur sliding dental phenomenon, anti-tooth screw 9 is oppositely screwed in anti-pitch thread hole 8, after being screwed into, continue the anti-tooth screw 9 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. a good airproof performance and replace strong self-tapping screw, 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 spiral shell head (2) comprises spiral shell umbrella (6), and spiral shell umbrella (6) is provided with hexagonal boss (7), and hexagonal boss (7) is provided with anti-pitch thread hole (8), and anti-pitch thread hole (8) is connected with anti-tooth screw (9); Described spiral shell umbrella (6) is also provided with fixed unit (10); Described screw rod (1) head end is also provided with sealing blade (11), is provided with seal washer (12) between sealing blade (11) and spiral shell umbrella (6); The width W of described sealing blade (11) equals the outer diameter D of 0.8 ~ 1 times of seal washer (12).
2. good airproof performance according to claim 1 and replace strong self-tapping screw, is characterized in that: described fixed unit (10) comprises via hole (13), is provided with set screw (14) in via hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510352666.8A CN104948556A (en) | 2015-06-24 | 2015-06-24 | Drill tail screw with good sealing performance and strong replaceability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510352666.8A CN104948556A (en) | 2015-06-24 | 2015-06-24 | Drill tail screw with good sealing performance and strong replaceability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104948556A true CN104948556A (en) | 2015-09-30 |
Family
ID=54163495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510352666.8A Pending CN104948556A (en) | 2015-06-24 | 2015-06-24 | Drill tail screw with good sealing performance and strong replaceability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104948556A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224344A (en) * | 2016-09-26 | 2016-12-14 | 利欧集团浙江泵业有限公司 | Many ribs tooth tapping screw |
| CN106870540A (en) * | 2017-03-24 | 2017-06-20 | 长葛市航天密封科技有限公司 | A kind of new high leakproofness antirust screw |
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 |
| CN204878216U (en) * | 2015-06-24 | 2015-12-16 | 贵州省华科实业有限公司 | What leakproofness was good can convenient brill tail screw of replacing |
-
2015
- 2015-06-24 CN CN201510352666.8A patent/CN104948556A/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 |
| CN204878216U (en) * | 2015-06-24 | 2015-12-16 | 贵州省华科实业有限公司 | What leakproofness was good can convenient brill tail screw of replacing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224344A (en) * | 2016-09-26 | 2016-12-14 | 利欧集团浙江泵业有限公司 | Many ribs tooth tapping screw |
| CN106870540A (en) * | 2017-03-24 | 2017-06-20 | 长葛市航天密封科技有限公司 | A kind of new high leakproofness antirust screw |
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| 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: 20150930 |