CN204878229U - Bipolar screw bores tail screw with anti - tooth readily removable structure - Google Patents
Bipolar screw bores tail screw with anti - tooth readily removable structure Download PDFInfo
- Publication number
- CN204878229U CN204878229U CN201520432280.3U CN201520432280U CN204878229U CN 204878229 U CN204878229 U CN 204878229U CN 201520432280 U CN201520432280 U CN 201520432280U CN 204878229 U CN204878229 U CN 204878229U
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- screw rod
- screw
- spiral shell
- tooth
- head
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Abstract
The utility model discloses a bipolar screw bores tail screw with anti - tooth readily removable structure. Including the screw rod, the head end and the spiral shell head of screw rod are connected, and the tail end of screw rod is equipped with the brill tail, is equipped with the screw thread on the periphery of screw rod, the screw rod include the one -level screw rod, the one -level screw rod is connected with the second grade screw rod, one -level screw rod head end be connected with the spiral shell head, the tail end of one -level screw rod is equipped with the hexagonal recess, second grade screw rod head end be equipped with the connection boss, second grade screw rod tail end end is equipped with the brill tail, the hexagonal recess with be connected the boss and connect, the spiral shell head include and be equipped with the hexagonal boss on the spiral shell umbrella by the spiral shell umbrella, be equipped with the reversed -tooth thread hole on the hexagonal boss, reversed -tooth thread hole and anti - tooth screw connection, one -level screw rod head end still be equipped with sealed cutting edge, sealed cutting edge and spiral shell head are equipped with seal ring, sealed cutting edge on still be equipped with and store up the bits groove. The utility model has the characteristics of, reduction in production cost, the replaceability is strong and the leakproofness is good.
Description
Technical field
The utility model relates to a kind of bolt structure, particularly a kind of bipolar screw type self-tapping screw with the readily removable structure of anti-tooth.
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 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, fail self-tapping screw structure is optimized, integrally-built for self-tapping screw hardness is improved, can cost of production be increased; 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 skidding is difficult to this screw to take out replace; 3) self-tapping screw by spiral shell umbrella directly and fixed block surface contact seal, its sealing effect is not good.
Summary of the invention
The purpose of this utility model is, provides a kind of bipolar screw type self-tapping screw with the readily removable structure of anti-tooth.The utility model has, and reduces cost of production, the feature of the strong and good airproof performance of replaceability.
The technical solution of the utility model: a kind of bipolar screw type self-tapping screw with the readily removable structure of anti-tooth, 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; Described screw rod comprises one-level screw rod, and one-level screw rod is connected with secondary screw rod; Described one-level screw rod head end is connected with spiral shell head, and the tail end of one-level screw rod is provided with hexagonal groove; Described secondary screw rod head end is provided with connection boss, and secondary 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 one-level 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; Described sealing blade is also provided with nail collection slot.
Aforesaid have in the bipolar screw type self-tapping screw of the readily removable structure of anti-tooth, and described seal washer is provided with guiding surface.
Compared with prior art, the utility model is bipolar split-type structural, screw rod is divided into one-level screw rod and secondary screw rod, and the hexagonal groove of one-level screw rod and the connection boss of secondary screw rod connect, and the head end of one-level screw rod is connected with spiral shell head; By this structure, be connected with one-level screw rod again after separately the brill tail hardness of secondary screw rod can being strengthened, self-tapping screw structure is optimized, when producing, and only need carry out hardness strengthening to the secondary screw rod of self-tapping screw, and without the need to strengthening self-tapping screw integral hardness, effectively reduce cost of production.
Spiral shell head of the present utility model 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 utility model arranges sealing blade at one-level 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; The chip produced during sealed knife cutting drill hole is stored in the nail collection slot of sealing blade, effectively prevent because seal washer stop causes chip removal not good and affects the problem of drilling effect; Moreover because of W=0.8 ~ 1D, 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, and by arranging guiding surface on seal washer, make the seal washer more easily squeezed hole of compressing into sealed knife sword and boring.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of one-level screw rod;
Fig. 3 is the structural representation of secondary screw rod;
Fig. 4 is the structural representation that spiral shell head is connected with one-level screw rod.
Being labeled as in accompanying drawing: 1-screw rod, 2-spiral shell head, 3-bores tail, 4-screw thread, 5-one-level screw rod, 6-secondary screw rod, 7-hexagonal groove, 8-connects boss, 9-spiral shell umbrella, 10-hexagonal boss, the anti-pitch thread hole of 11-, the anti-tooth screw of 12-, 13-seals blade, 14-seal washer, 15-nail collection slot, 16-guiding surface.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described, but not as the foundation limited the utility model.
Embodiment.Have a bipolar screw type self-tapping screw for the readily removable structure of anti-tooth, form as Figure 1-4, 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 and bores tail 3, and the circumferential surface of screw rod 1 is provided with screw thread 4; Described screw rod 1 comprises one-level screw rod 5, and one-level screw rod 5 is connected with secondary screw rod 6; Described one-level screw rod 5 head end is connected with spiral shell head 2, and the tail end of one-level screw rod 5 is provided with hexagonal groove 7; Described secondary screw rod 6 head end is provided with and connects boss 8, and secondary screw rod 6 tail end end is provided with and bores tail 3; Described hexagonal groove 7 be connected boss 8 and connect; Described spiral shell head 2 comprises spiral shell umbrella 9, and spiral shell umbrella 9 is provided with hexagonal boss 10, and hexagonal boss 10 is provided with anti-pitch thread hole 11, and anti-pitch thread hole 11 is connected with anti-tooth screw 12; Described one-level screw rod 5 head end is also provided with sealing blade 13, is provided with seal washer 14 between sealing blade 13 and spiral shell head 2; The width W of described sealing blade 13 equals the outer diameter D of 0.8 ~ 1 times of seal washer 14; Described sealing blade 13 is also provided with nail collection slot 15; Described secondary screw rod 6 can use high hardness material to increase its hardness.
Aforesaid seal washer 14 is provided with guiding surface 16.
Working principle of the present utility model is, the screw screwdriver bit of screw gun is enclosed within the hexagonal boss 10 of self-tapping screw, start screw gun self-tapping screw is screwed, when self-tapping screw drilling-tapping to sealing blade 13 position time, sealing blade 13 starts boring, when spiral shell umbrella 9 bottom surface and the fixed block surface contact of self-tapping screw, what complete self-tapping screw screws installation action, and the chip produced when sealing blade 13 is holed is stored in the nail collection slot 15 of sealing blade 13.When screwing self-tapping screw, if hexagonal boss 10 because of torsion excessive damaged and occur sliding dental phenomenon, anti-tooth screw 12 is oppositely screwed in anti-pitch thread hole 11, after being screwed into, continue the anti-tooth screw 12 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 has the bipolar screw type self-tapping screw of the readily removable structure of anti-tooth, it is characterized in that: 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 and bores tail (3), and the circumferential surface of screw rod (1) is provided with screw thread (4); Described screw rod (1) comprises one-level screw rod (5), and one-level screw rod (5) is connected with secondary screw rod (6); Described one-level screw rod (5) head end is connected with spiral shell head (2), and the tail end of one-level screw rod (5) is provided with hexagonal groove (7); Described secondary screw rod (6) head end is provided with and connects boss (8), and secondary screw rod (6) tail end end is provided with and bores tail (3); Described hexagonal groove (7) be connected boss (8) and connect; Described spiral shell head (2) comprises spiral shell umbrella (9), and spiral shell umbrella (9) is provided with hexagonal boss (10), and hexagonal boss (10) is provided with anti-pitch thread hole (11), and anti-pitch thread hole (11) is connected with anti-tooth screw (12); Described one-level screw rod (5) head end is also provided with sealing blade (13), is provided with seal washer (14) between sealing blade (13) and spiral shell umbrella (9); The width W of described sealing blade (13) equals the outer diameter D of 0.8 ~ 1 times of seal washer (14); Described sealing blade (13) is also provided with nail collection slot (15).
2. the bipolar screw type self-tapping screw with the readily removable structure of anti-tooth according to claim 1, is characterized in that: described seal washer (14) is provided with guiding surface (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520432280.3U CN204878229U (en) | 2015-06-23 | 2015-06-23 | Bipolar screw bores tail screw with anti - tooth readily removable structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520432280.3U CN204878229U (en) | 2015-06-23 | 2015-06-23 | Bipolar screw bores tail screw with anti - tooth readily removable structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204878229U true CN204878229U (en) | 2015-12-16 |
Family
ID=54822605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520432280.3U Expired - Fee Related CN204878229U (en) | 2015-06-23 | 2015-06-23 | Bipolar screw bores tail screw with anti - tooth readily removable structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204878229U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110226048A (en) * | 2016-11-18 | 2019-09-10 | 菲利普螺丝公司 | With the fastener for cleaning and smoothing alar part |
-
2015
- 2015-06-23 CN CN201520432280.3U patent/CN204878229U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110226048A (en) * | 2016-11-18 | 2019-09-10 | 菲利普螺丝公司 | With the fastener for cleaning and smoothing alar part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20170623 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |