CN204572727U - The locking EXPANSION ANCHOR BOLTS of a kind of tube-expanding type - Google Patents
The locking EXPANSION ANCHOR BOLTS of a kind of tube-expanding type Download PDFInfo
- Publication number
- CN204572727U CN204572727U CN201520245322.2U CN201520245322U CN204572727U CN 204572727 U CN204572727 U CN 204572727U CN 201520245322 U CN201520245322 U CN 201520245322U CN 204572727 U CN204572727 U CN 204572727U
- Authority
- CN
- China
- Prior art keywords
- main body
- body bolt
- threaded hole
- interior threaded
- dogbolt
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses the locking EXPANSION ANCHOR BOLTS of a kind of tube-expanding type, it is characterized in that comprising: the outer peripheral surface of main body bolt has the external thread structure with workpiece interior threaded hole screw-thread fit, there is axially through interior threaded hole, being set at the leading portion of main body bolt can the expansion arc of radially bulging, and expansion arc has the axially through swollen hole of hollow; Dogbolt forms screw-thread fit with the interior threaded hole of its outside thread and main body bolt, and the rotation direction of dogbolt in main body bolt and the rotation direction of main body bolt in workpiece interior threaded hole are opposite direction; The bolt front end of dogbolt can be embedded in the swollen hole of hollow of expansion arc, makes expansion arc in radial bulging and is butted on the surface of workpiece interior threaded hole.The utility model can effectively prevent from loosening, be easy to dismounting, avoid wearing and tearing.
Description
Technical field
The utility model relates to a kind of fastening piece, is more particularly a kind of fastening threaded connector.
Background technique
Plain bolt connection has certain self-locking performance, but in the process of vibration, and use in the environment that temperature variation is larger, easily cause bolt looseness even to come off, cause unnecessary loss.No matter be take metal as material or employing working of plastics, unavoidably there are wearing and tearing in disassembly process, due to the matching gap added between component of wearing and tearing, frequent easy disassembling causes because excessive wear causes connected piece to be scrapped.
Locking thread of the prior art is generally arrange elastic washer, also have and the bottom end face of bolt is set to dentation, to increase the frictional force between bolt end face and assembly parts, but these modes fundamentally can not solve the loosening problem of the threaded connector produced due to the increase of the matching gap of screw thread.
Application number is 201120276074.X, Authorization Notice No. is: it is application nylon rope on its screw thread that the utility model patent of CN202301389U discloses " a kind of novel screw ", between internal thread and outside thread, establish one deck elastomer contact, make its embed completely at the bottom of tip of thread and tooth between gap, certain locking effect can be played.But nylon material also should not for a long time and be reused, and can not bear larger working pulling force.
Model utility content
The utility model is the deficiency for avoiding existing for above-mentioned prior art, provides a kind of tube-expanding type locking EXPANSION ANCHOR BOLTS, loosening, being easy to dismounting to effectively preventing, and avoids wearing and tearing.
The utility model is that technical solution problem adopts following technological scheme:
The structural feature of the locking EXPANSION ANCHOR BOLTS of the utility model tube-expanding type comprises:
One main body bolt, its outer peripheral surface has the external thread structure with workpiece interior threaded hole screw-thread fit, described main body bolt has axially through interior threaded hole, and being set at the leading portion of described main body bolt can the expansion arc of radially bulging, and described expansion arc has the axially through swollen hole of hollow; The vibrational power flow of the expansion arc of described main body bolt is: be set to circumferentially be uniformly distributed and having the expand tube of at least three axial notch at leading portion by described main body bolt, described hollow is swollen hole is in described expand tube cone shape hole, is embedded in described cone shape hole with the bolt front end of described dogbolt and axially different position makes described expand tube form bulging diametrically.
One dogbolt, described dogbolt forms screw-thread fit with the interior threaded hole of its outside thread and described main body bolt, and the rotation direction of described dogbolt in main body bolt and the rotation direction of described main body bolt in workpiece interior threaded hole are opposite direction; The bolt front end of described dogbolt can be embedded in the swollen hole of hollow of described expansion arc, makes described expansion arc in radial bulging and is butted on the surface of workpiece interior threaded hole.
The structural feature of the locking EXPANSION ANCHOR BOLTS of the utility model tube-expanding type is also: described axial notch (4a) is four of the distribution in " ten " word.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model is the internal and external threads structure forming intussusception with main body bolt and dogbolt, and Hand of spiral is contrary, stop anti-loosing effect highly significant;
2, the utility model is equipped with expansion arc, further add anti-loosing effect with the form of radial bulging;
3, the utility model adopts the structural type of expand tube at expansion arc, simply effectively, easy to implement, reliably fastening;
Accompanying drawing explanation
Fig. 1 a is the utility model structural representation;
Fig. 1 b is main body bolt appearance schematic diagram in the utility model;
Fig. 1 c is main body bolt internal structure schematic diagram in the utility model;
Fig. 1 d is dogbolt schematic diagram in the utility model;
Number in the figure: 1 main body bolt, 2 interior threaded holes, 3 dogbolts, 4 expansion arcs, 4a axial notch, 4b expand tube.
Embodiment
See Fig. 1 a, Fig. 1 b, Fig. 1 c and Fig. 1 d, the present embodiment is the locking EXPANSION ANCHOR BOLTS of tube-expanding type, and it comprises:
Main body bolt 1, its outer peripheral surface has the external thread structure with workpiece interior threaded hole screw-thread fit, main body bolt 1 has axially through interior threaded hole 2, and being set at the leading portion of main body bolt 1 can the expansion arc 4 of radially bulging, and expansion arc 4 has the axially through swollen hole 5 of hollow.
Dogbolt 3, dogbolt 3 forms screw-thread fit with the interior threaded hole 2 of its outside thread and main body bolt 1, and the rotation direction of dogbolt 3 in main body bolt 1 and the rotation direction of main body bolt 1 in workpiece interior threaded hole are opposite direction; The bolt front end of dogbolt 3 can be embedded in the swollen hole 5 of hollow of expansion arc 4, makes expansion arc 5 in radial bulging and is butted on the surface of workpiece interior threaded hole.
In concrete enforcement, the vibrational power flow of the expansion arc 4 of main body bolt 1 is: be set to circumferentially be uniformly distributed and having the expand tube 4b of at least three axial notch 4a at leading portion by main body bolt 1, arrange " ten " word is provided with four axial notch 4a in the present embodiment; Hollow is swollen hole 5 is in expand tube 4b cone shape hole, is embedded in cone shape hole with the bolt front end of dogbolt 3 and axially different position makes expand tube 4b form bulging diametrically.
When implementing fastening, first main body bolt is placed in workpiece interior threaded hole with screw-thread fit, again by dogbolt with screw-thread fit in the interior threaded hole of main body bolt, until the bolt front end of dogbolt is embedded in the swollen hole of hollow of expansion arc, make the radially bulging be butted on the surface of workpiece interior threaded hole of the expand tube in expansion arc, realize locking.
Claims (2)
1. the locking EXPANSION ANCHOR BOLTS of tube-expanding type, is characterized in that comprising:
One main body bolt (1), its outer peripheral surface has the external thread structure with workpiece interior threaded hole screw-thread fit, described main body bolt (1) has axially through interior threaded hole (2), being set at the leading portion of described main body bolt (1) can the expansion arc (4) of radially bulging, and described expansion arc (4) has the axially through swollen hole of hollow (5); The vibrational power flow of the expansion arc (4) of described main body bolt (1) is: described main body bolt (1) be set to circumferentially be uniformly distributed and having the expand tube (4b) of at least three axial notch (4a) at leading portion, described hollow is swollen hole (5) is in described expand tube (4b) cone shape hole, is embedded in described cone shape hole with the bolt front end of dogbolt (3) and axially different position makes described expand tube (4b) form bulging diametrically; Described dogbolt (3) forms screw-thread fit with the interior threaded hole (2) of its outside thread and described main body bolt (1), and the rotation direction of described dogbolt (3) in main body bolt (1) and the rotation direction of described main body bolt (1) in workpiece interior threaded hole are opposite direction; The bolt front end of described dogbolt (3) can be embedded in the swollen hole of hollow (5) of described expansion arc (4), makes described expansion arc (5) in radial bulging and is butted on the surface of workpiece interior threaded hole.
2. the locking EXPANSION ANCHOR BOLTS of tube-expanding type according to claim 1, is characterized in that: described axial notch (4a) is four of the distribution in " ten " word.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520245322.2U CN204572727U (en) | 2015-04-21 | 2015-04-21 | The locking EXPANSION ANCHOR BOLTS of a kind of tube-expanding type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520245322.2U CN204572727U (en) | 2015-04-21 | 2015-04-21 | The locking EXPANSION ANCHOR BOLTS of a kind of tube-expanding type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204572727U true CN204572727U (en) | 2015-08-19 |
Family
ID=53865370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520245322.2U Expired - Fee Related CN204572727U (en) | 2015-04-21 | 2015-04-21 | The locking EXPANSION ANCHOR BOLTS of a kind of tube-expanding type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204572727U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879361A (en) * | 2015-04-21 | 2015-09-02 | 合肥工业大学 | Expansion lock bolt |
| CN106286543A (en) * | 2016-10-27 | 2017-01-04 | 苏州市淞舜五金有限公司 | A kind of check bolt |
-
2015
- 2015-04-21 CN CN201520245322.2U patent/CN204572727U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879361A (en) * | 2015-04-21 | 2015-09-02 | 合肥工业大学 | Expansion lock bolt |
| CN106286543A (en) * | 2016-10-27 | 2017-01-04 | 苏州市淞舜五金有限公司 | A kind of check bolt |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20160421 |