CN101619739B - Self-locking thread insert - Google Patents
Self-locking thread insert Download PDFInfo
- Publication number
- CN101619739B CN101619739B CN2008100682077A CN200810068207A CN101619739B CN 101619739 B CN101619739 B CN 101619739B CN 2008100682077 A CN2008100682077 A CN 2008100682077A CN 200810068207 A CN200810068207 A CN 200810068207A CN 101619739 B CN101619739 B CN 101619739B
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- Prior art keywords
- self
- locking
- thread insert
- tail
- locking thread
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Abstract
The invention relates to a self-locking thread insert. For solving the problem that the prior wire thread insert is susceptible to trip, tooth disorder and the like, the invention provides a self-locking thread insert, which comprises a sleeve body, wherein the sleeve body is provided with sleeve body internal threads and sleeve body external threads; one end of the sleeve body is provided with locking thread tail which is integrated with the sleeve body and provided with thread tail inner hole axial with a sleeve body inner hole; one end of the thread tail inner hole is a circular end which is connected with the sleeve body inner hole and has the same diameter as the sleeve body inner hole, and the other end of the thread tail inner hole is an oblate end which is formed through gradual transition from the circular end; and the thread tail inner hole is provided with thread tail internal threads connected with the sleeve body internal threads. With the locking thread tail, the self-locking thread insert of the invention can prevent the separation of a bolt or screw from the self-locking thread insert due to looseness caused by vibration in use and improve the shock resistance of the screw joint of the self-locking thread insert and the bolt or screw.
Description
Technical field
The present invention relates to a kind of swivel nut, more particularly, relate to a kind of self-locking thread insert.
Background technique
In the middle of manufacturing, use the not high material of some hardness as making some component with aluminium, copper, plastics etc. through regular meeting.In the time of in the middle of the component that the low hardness material need be made are assembled into goods, being spirally connected is general, the most general a kind of Placement, this just need offer tapped hole on these component, utilize screw or bolt by tapped hole this part to be assembled in the middle of the goods.But because it is lower to make the material hardness of these component, tapped hole on it is through after repeatedly dismounting is spirally connected, cause silk mouthful stripped thread easily, connection once more can't be spirally connected, cause scrapping of component or goods, thereby increased the scrappage of component or goods, shortened the working life of component.
In order to solve low hardness material parts tapped hole silk mouth stripped thread problem, existing technical scheme generally is to be nested with a steel-wire screw-socket at tapped hole, by the higher swivel nut of nested metal material hardness, reaches and prevents tapped hole silk mouth stripped thread phenomenon.Yet problems such as tripping, random tooth appear in steel-wire screw-socket easily, cause and can't be screwed into and back-out, and perhaps occur self being taken out of in mounting hole by screw, cause and scrap phenomenon; But not self locking type full-metallic swivel nut can't satisfy the requirement of high resistance to shock, has limited application area.
Summary of the invention
The technical problem to be solved in the present invention is, occurs tripping, random tooth and the low problem of anti-seismic performance easily at existing steel-wire screw-socket, and problem and the high self-locking thread insert of anti-seismic performance such as a kind of difficult generation tripping, random tooth are provided.
The technical solution adopted for the present invention to solve the technical problems is: propose a kind of self-locking thread insert, comprise body, described body has body internal thread and cover extracorporeal thread, has locking screw tail with the body integrative-structure at an end of body, described locking screw tail has the spiral shell tail endoporus coaxial with the body endoporus, one end of described spiral shell tail endoporus is to join with the body endoporus and round nose that diameter is identical with the body diameter of bore, the other end is from the round nose oblateness end that forms of transition gradually, is provided with the spiral shell tail internal thread that is connected with the body internal thread at spiral shell tail endoporus.When using the self-locking thread insert among the present invention, on the parts of low hardness material, form a tapped hole, self-locking thread insert is screwed in the tapped hole in the parts, in the time of parts and miscellaneous part need being spirally connected by screw or bolt, bolt or screw are screwed in the endoporus of self-locking thread insert and the self-locking thread insert bolt, when the end of bolt or screw is screwed in the endoporus of locking screw tail, bolt or screw are expanded into circle with the oblate endoporus of locking screw tail, the oblate endoporus of locking screw tail is expanded into the active force that can improve after the circle between locking screw tail and bolt or the screw, thereby can prevent effectively that bolt or screw from coming off mutually with swivel nut when in vibration environment, using, improve the anti-seismic performance that is spirally connected.Wherein, the formation of oblate end is to exert pressure in the side of an end of locking screw tail and make it produce deformation, become the oblateness of sub-elliptical by the circle before exerting pressure, make an end of the endoporus of locking screw tail carry out the transition to oblate end gradually by circle to an other end.
In self-locking thread insert of the present invention, the maximum radial dimension of described locking screw tail is less than the diameter of described body.When this kind structure can make self-locking thread insert in the tapped hole that is screwed into low hardness material parts, the locking screw tail can not destroy the screw thread in the parts tapped hole.
In self-locking thread insert of the present invention, described body is provided with away from the termination of locking screw tail and is used for and the setting tool draw-in groove of clamping mutually.The setting of draw-in groove can make things convenient for self-locking thread insert to be screwed in the low hardness material parts, the type of draw-in groove can be " one " word groove or " ten " word groove, can use " one " word screwdriver set or " ten " word screwdriver set when mounted, the draw-in groove that also can be made into other types in the specific implementation is to cooperate corresponding screwdriver set.
In self-locking thread insert of the present invention, described self-locking thread insert also comprises latch, and the outer peripheral surface of described body is provided with at least one length direction and the axial identical slot for the latch insertion of body, and the height of described latch is greater than the degree of depth of described slot.After self-locking thread insert is rotated in the tapped hole that is installed to low hardness material parts, in slot, insert latch, because the height of latch is slightly larger than the degree of depth of slot, the top of latch and parts tapped hole produce interference fit, thereby can prevent that self-locking thread insert from rotating when screwing in screw or bolt in self-locking thread insert.
In self-locking thread insert of the present invention, described slot strip number is at least two, and described slot is circumferentially uniform in the body upper edge.
Implement self-locking thread insert of the present invention and compare, have following advantage with existing swivel nut:
1, self-locking thread insert has the locking screw tail, can prevent that in use bolt or screw and self-locking thread insert break away from because of vibrations, improves the anti-seismic performance that self-locking thread insert and bolt or screw are spirally connected.
2, the side of self-locking thread insert has latch, self rotates in the time of can preventing to screw in bolt or screw in the self-locking thread insert, has improved the installation steadiness of self-locking thread insert self.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the plan view of self-locking thread insert of the present invention;
Fig. 2 is the worm's eye view of self-locking thread insert of the present invention;
Fig. 3 is the partial sectional view of self-locking thread insert of the present invention;
Fig. 4 is a latch structure schematic representation of the present invention;
Fig. 5 has the self-locking thread insert structural representation of latch for intercalation of the present invention.
Embodiment
Fig. 1 to Fig. 5 shows a more excellent mode of execution of the present invention.
A kind of self-locking thread insert, as shown in Figure 1 to Figure 3, comprise body 10, body 10 has body internal thread 12 and cover extracorporeal thread 11, has locking screw tail 20 with body 10 integrative-structures at an end of body 10, locking screw tail 20 has the spiral shell tail endoporus 22 coaxial with body endoporus 15, one end of spiral shell tail endoporus 22 is to join with body endoporus 15 and round nose that diameter is identical with body endoporus 15 diameters, the other end is that spiral shell tail endoporus 22 is provided with the spiral shell tail internal thread 21 that is connected with body internal thread 12 from the round nose oblateness end that forms of transition gradually.When using the self-locking thread insert among the present invention, as shown in Figure 5, on the parts 40 of low hardness material, form tapped hole, self-locking thread insert is screwed in the tapped hole in the parts, in the time of parts 40 and miscellaneous part need being spirally connected by screw or bolt, bolt or screw are screwed in the body endoporus of self-locking thread insert and the self-locking thread insert bolt, when the end of bolt or screw is screwed in the endoporus 22 of locking screw tail, bolt or screw are expanded into circle with the oblate endoporus of locking screw tail, the oblate endoporus of locking screw tail is expanded into the active force that can improve after the circle between locking screw tail and bolt or the screw, form self-locking, thereby can prevent effectively that bolt or screw from coming off mutually with swivel nut when in vibration environment, using, improve the anti-seismic performance that is spirally connected.Wherein, the formation of oblate end is earlier the locking screw tail to be processed into measure-alike cylindric in two ends, and then exerting pressure away from the side of an end of body and making it produce deformation, become the oblateness of sub-elliptical by the circle before exerting pressure, making the endoporus of locking screw tail is to carry out the transition to oblateness gradually by circle by an end to an other end transition.
In the present embodiment, as Fig. 2, shown in Figure 3, the screw thread that locking screw tail 20 damages in the parts tapped holes when preventing that self-locking thread insert is in the tapped hole that is screwed into low hardness material parts, the maximum radial dimension of locking screw tail 20 is less than the diameter of body 10.
In the present embodiment, as shown in Figure 1, body 10 is provided with away from the termination of locking screw tail 20 and is used for " one " word draw-in groove 14 of matching with " one " word screwdriver set.When being screwed in the tapped hole of low hardness material parts, self-locking thread insert use " one " word screwdriver set that self-locking thread insert is screwed in parts, in the specific implementation, draw-in groove 14 can also be designed to " ten " word groove or other types draw-in groove to cooperate corresponding screwdriver set or instrument.
In the present embodiment, extremely shown in Figure 5 as Fig. 3, self-locking thread insert also comprises latch 30, be provided with two length directions and body 10 axial identical slots 13 in body 10 outsides, article two, slot 13 is symmetrical arranged about body 10 axis, wherein the height of latch 30 is slightly larger than the degree of depth of slot 13, after the self-locking thread insert screw-in is installed in the low hardness material parts tapped hole, in slot 13, insert latch 30, because the height of latch 30 is slightly larger than the degree of depth of slot, the top of latch 13 and parts tapped hole produce interference fit, thereby can prevent that self-locking thread insert from rotating when screwing in screw or bolt in self-locking thread insert, thereby increase the installation steadiness of self-locking thread insert self.
Claims (3)
1. self-locking thread insert, comprise body, described body has body internal thread and cover extracorporeal thread, it is characterized in that: have locking screw tail with the body integrative-structure at an end of body, described locking screw tail has the spiral shell tail endoporus coaxial with the body endoporus, one end of described spiral shell tail endoporus is to join with the body endoporus and round nose that diameter is identical with the body diameter of bore, the other end is from the round nose oblateness end that forms of transition gradually, is provided with the spiral shell tail internal thread that is connected with the body internal thread at spiral shell tail endoporus;
Described body is provided with away from the termination of locking screw tail and is used for and setting tool " one " word draw-in groove or " ten " word draw-in groove of clamping mutually;
Described self-locking thread insert also comprises latch, and the outer peripheral surface of described body is provided with at least one length direction and the axial identical slot for the latch insertion of body, and the height of described latch is greater than the degree of depth of described slot;
After self-locking thread insert is rotated in the tapped hole that is installed to low hardness material parts, in slot, insert latch, because the height of latch is slightly larger than the degree of depth of slot, the top of latch and parts tapped hole produce interference fit.
2. self-locking thread insert according to claim 1 is characterized in that the maximum radial dimension of described locking screw tail is less than the diameter of described body.
3. self-locking thread insert according to claim 1 is characterized in that, described slot strip number is at least two, and described slot is circumferentially uniform in the body upper edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100682077A CN101619739B (en) | 2008-06-30 | 2008-06-30 | Self-locking thread insert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100682077A CN101619739B (en) | 2008-06-30 | 2008-06-30 | Self-locking thread insert |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101619739A CN101619739A (en) | 2010-01-06 |
| CN101619739B true CN101619739B (en) | 2011-09-28 |
Family
ID=41513111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100682077A Expired - Fee Related CN101619739B (en) | 2008-06-30 | 2008-06-30 | Self-locking thread insert |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101619739B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619849A (en) * | 2012-04-16 | 2012-08-01 | 江苏银河电子股份有限公司 | Nut and fixing structure based on nut |
| CN108644264B (en) * | 2018-08-07 | 2023-07-25 | 中国重汽集团济南动力有限公司 | Manual adjusting device of air pressure disc brake |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4643606A (en) * | 1984-11-02 | 1987-02-17 | General Electric Company | Locking fastener |
| CN2195647Y (en) * | 1994-01-11 | 1995-04-26 | 方君伟 | Self-tapping screw |
| CN2220558Y (en) * | 1993-12-20 | 1996-02-21 | 吉万年 | Automatic locking anti-theft bolt, nut |
| CN2300755Y (en) * | 1995-04-19 | 1998-12-16 | 国营内蒙古第一机械制造厂技术处 | Steel screw sleeve for joining aluminium box |
| DE20001427U1 (en) * | 2000-01-28 | 2000-04-13 | Nat Aerospace Fasteners Corp | Locking insert with plastic jacket |
| CN2846857Y (en) * | 2005-11-18 | 2006-12-13 | 王兆利 | Integrated screw sleeve |
| CN2877951Y (en) * | 2006-04-26 | 2007-03-14 | 李昌勋 | Mending screw sheath |
| CN101016915A (en) * | 2007-02-06 | 2007-08-15 | 贵州航天精工制造有限公司 | Method for enhancing low-intensity material screwed hole and insert studs |
| CN200993148Y (en) * | 2006-12-13 | 2007-12-19 | 贵州航天精工制造有限公司 | Nut with self-locking performance |
-
2008
- 2008-06-30 CN CN2008100682077A patent/CN101619739B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4643606A (en) * | 1984-11-02 | 1987-02-17 | General Electric Company | Locking fastener |
| CN2220558Y (en) * | 1993-12-20 | 1996-02-21 | 吉万年 | Automatic locking anti-theft bolt, nut |
| CN2195647Y (en) * | 1994-01-11 | 1995-04-26 | 方君伟 | Self-tapping screw |
| CN2300755Y (en) * | 1995-04-19 | 1998-12-16 | 国营内蒙古第一机械制造厂技术处 | Steel screw sleeve for joining aluminium box |
| DE20001427U1 (en) * | 2000-01-28 | 2000-04-13 | Nat Aerospace Fasteners Corp | Locking insert with plastic jacket |
| CN2846857Y (en) * | 2005-11-18 | 2006-12-13 | 王兆利 | Integrated screw sleeve |
| CN2877951Y (en) * | 2006-04-26 | 2007-03-14 | 李昌勋 | Mending screw sheath |
| CN200993148Y (en) * | 2006-12-13 | 2007-12-19 | 贵州航天精工制造有限公司 | Nut with self-locking performance |
| CN101016915A (en) * | 2007-02-06 | 2007-08-15 | 贵州航天精工制造有限公司 | Method for enhancing low-intensity material screwed hole and insert studs |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101619739A (en) | 2010-01-06 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20110928 Termination date: 20190630 |