CN2459476Y - Self-locking screw bolt and nut - Google Patents
Self-locking screw bolt and nut Download PDFInfo
- Publication number
- CN2459476Y CN2459476Y CN 00263212 CN00263212U CN2459476Y CN 2459476 Y CN2459476 Y CN 2459476Y CN 00263212 CN00263212 CN 00263212 CN 00263212 U CN00263212 U CN 00263212U CN 2459476 Y CN2459476 Y CN 2459476Y
- Authority
- CN
- China
- Prior art keywords
- eccentric
- nut
- eccentric circle
- groove
- screw rod
- 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
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- Bolts, Nuts, And Washers (AREA)
Abstract
The utility model relates to an automatic-locking screw bolt and nut. One section of a screw rod is provided with an axial eccentric shaft roller and an eccentric opening. One end of the other section is provided with a corresponding eccentric concave groove. The section is also provided with one pinhole. The front face of a screw nut is provided with two partly-matched eccentric-circle type screw nuts whose inner diameters are concentric and outer diameters are eccentric. The utility model can prevent screw nuts and screw bolts from mutually rotating without elastic stop washers, split pins, etc., and can be locked automatically and firmly.
Description
The utility model relates to a kind of fastening piece, especially a kind of auto lock bolt and nut that is used for fastening or fixed component, machine parts etc.
Be widely used in bolt fasteners fastening or objects such as fixed component, machine parts at present, adopt the bolt of band spiral shell button to be equipped with nut, pad, spring washer etc., this bolt fastener is under the tight part counter-force effect of vibrations, high load operating mode or quilt, problems such as nut rotates, screw rod is loosening can occur, thereby lose effect fastening, that connect.More there is not the anti-loose anti-theft function.
The purpose of this utility model provide a kind of nut match with screw rod can auto lock loosing and theft preventing bolt, it adopts eccentric manner, makes nut and screw rod or nut and nut reach the locking that can not become flexible.
The purpose of this utility model can realize in the following manner.
Screw rod is to buckle partly two sections by separable band spiral shell, wherein one section head is provided with axial eccentric beaming roller, eccentric mouthful, one end of another section is provided with the eccentric groove that position, shape and eccentric beaming roller adapt, and also has that axially connect, a position and eccentric mouth 6 corresponding pin-and-holes in this section, when two sections screw rods match, eccentric beaming roller just in time is positioned at eccentric groove, then screw rod two-part are connected as one, and pin-and-hole is corresponding with eccentric mouthful, and locating stud can be arranged in pin-and-hole and eccentric mouth; But the front of nut is provided with two nuts of the eccentric circle formula mating part of the concentric external diameter decentraction of internal diameter.
The utility model is compared with the plain bolt fastening piece, just can play without elasticity lock washer, cotter pin etc. and prevent that nut and bolt rotate mutually, and self-locking is firm.Extract the location pin out, nut, bolt unloading motionless (remove and twist into two parts screw, twist bad nut), as safe as a house, reliable, antitheft unloading.To the fastening piece at positions such as the railway locomotive that shakes easy pine, vehicle, track switch, rail joint, high-strength insulation joint, bolt, nut place all can once tighten and put in place, need not tighten up for a long time, have also saved spring nut-lock washer, opening pin, plain washer etc.
Description of drawings is as follows:
Fig. 1 is an an embodiment's of the present utility model sectional view;
Fig. 2 is the described embodiment's of Fig. 1 a side view:
Fig. 3 is another an embodiment's of the present utility model front view;
Fig. 4 is the described embodiment's of Fig. 3 an A-A sectional view;
Fig. 5 is an an embodiment's of the present utility model partial sectional view;
Fig. 6 is the described embodiment's of Fig. 5 a side view:
Fig. 7 is the schematic representation of embodiment's used compression spring among Fig. 5;
Fig. 8 is the side view of Fig. 7;
Fig. 9 is another an embodiment's of the present utility model schematic representation;
Figure 10 is the described embodiment's of Fig. 9 a side view.
Below in conjunction with drawings and Examples the utility model is further described.
By Fig. 1 to 2 as seen, screw rod is that two sections band spiral shell buttons are partly formed, eccentric beaming roller 4 and eccentric mouth 6 are arranged on one section 2, the pin-and-hole 7 that eccentric groove 5 is arranged on another section 3 and connect, when two sections are closed up, eccentric shaft rod 4 just in time inserts eccentric groove 5, pin-and-hole 7 also coincide with eccentric mouthful 6, locating stud 9 is inserted pin-and-holes 7 and support into eccentric mouthful 6, then screw rod is connected in aggregatesly, and plain nut 8 is screwed in, and this moment is owing to be synchronously with one heart, then there is not any difference by nut 8, screw rod 2,3 rotations and plain bolt fastening piece.But when not having locating stud 9 to locate in hole 6,7, the cylindrical body 2,3 of two sections band spiral shell buttons encloses eccentric circle beaming roller 4 mutual reverse turns, the one-tenth ellipticity movement locus nut that rises mutually outward, and its torque force and tension are directly proportional, and then nut can not be dismantled.
Referring to Fig. 3 and 4, screw rod is the screw rod of common screw or embodiment's 1 same structure, but the eccentric circle formula mating part on nut 8 fronts is an eccentric circle boss 10, the external diameter of this eccentric circle boss 10 and pad internal diameter match, two such nuts are screwed in screw rod simultaneously, the two sides of its eccentric circle boss 10 is relative, the centre installs pad additional, when two nuts screw, two eccentric circle boss just in time snap in the interior circular hole of pad, because eccentric circle boss movement locus when rotated is oval, will be by pad inner round wall tensioner when then turning.But nut 8 is positive go up mating parts can also be a nut be the eccentric circle groove with the nut of another eccentric circle boss mutually movingly.
Shown in Fig. 5 to 8, but the eccentric circle formula mating part that nut 11 fronts are provided with is the eccentric circle groove 12 of a band umbrella rib, two such nuts are screwed in screw rod simultaneously, the two sides of its eccentric circle groove 12 is relative, the centre installs compression spring 13 additional, and when two nuts screwed, two eccentric circle grooves 12 just in time snapped in pad 13, because movement locus when rotated is oval, nut can be locked.
As shown in Figures 9 and 10, but the eccentric circle formula mating part that nut 14 fronts are provided be an eccentric circle groove 16 ', but the eccentric circle formula mating part that another relative nut 15 fronts are provided with is an eccentric circle boss 16, two such nuts are screwed in screw rod simultaneously, the two sides of its eccentric circle formula is relative, eccentric circle boss 16 embedding eccentric circle grooves 16 ' and, when two nuts screw, because movement locus when rotated is oval, nut can be locked.
Eccentric circle on eccentric shaft rod on the above-mentioned screw rod, eccentric groove and the nut, its offset are the 1/10-1/2 of semidiameter.
Claims (5)
1, a kind of auto lock bolt and nut, comprise screw rod, fastening piece such as nut and pad, it is characterized in that: screw rod band spiral shell is buckled part and is formed by separable two sections, wherein one section head is provided with axial eccentric shaft rod, eccentric mouthful, another section one end is provided with the position, the eccentric groove that shape and eccentric shaft rod adapt, also have one axially to connect in this section, position and eccentric mouthful corresponding pin-and-hole, when two sections screw rods match, the eccentric shaft rod just in time is positioned at eccentric groove, then screw rod two-part are connected as one, and pin-and-hole is corresponding with eccentric mouthful, and locating stud can be arranged in pin-and-hole and eccentric mouth; But nut is provided with two nuts of the eccentric circle formula mating part of the concentric external diameter decentraction of internal diameter on the front.
2, automatic locking bolt according to claim 1 and nut is characterized in that: but the eccentric circle formula mating part on the nut front is an eccentric circle boss, and the external diameter of this eccentric circle boss and pad internal diameter match; But the eccentric circle formula mating part on the nut front can also be one and be that for eccentric circle groove and another eccentric circle boss nut mutually movingly.
3, automatic locking bolt according to claim 1 and nut is characterized in that: but the eccentric circle formula mating part that the nut front is provided with is the eccentric circle groove of a band umbrella rib, and two such nut two sides are relative, and the centre installs compression spring additional.
4, auto lock bolt according to claim 1 and nut, it is characterized in that: but the eccentric circle formula mating part that the nut front is provided with is an eccentric circle groove, but the eccentric circle formula mating part that another relative nut front is provided with is an eccentric circle boss, two such nuts are screwed in screw rod simultaneously, the two sides of its eccentric circle formula is relative, and the eccentric circle boss embeds the eccentric circle groove.
5, auto lock bolt according to claim 1 and nut is characterized in that: the eccentric circle on the eccentric shaft rod on the screw rod, eccentric groove and the nut, its offset are the 1/10-1/2 of semidiameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00263212 CN2459476Y (en) | 2000-12-08 | 2000-12-08 | Self-locking screw bolt and nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00263212 CN2459476Y (en) | 2000-12-08 | 2000-12-08 | Self-locking screw bolt and nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2459476Y true CN2459476Y (en) | 2001-11-14 |
Family
ID=33618255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00263212 Expired - Fee Related CN2459476Y (en) | 2000-12-08 | 2000-12-08 | Self-locking screw bolt and nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2459476Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089912A (en) * | 2016-08-24 | 2016-11-09 | 闫冰倩 | A kind of shockproof self-locking screw |
| CN106122236A (en) * | 2016-08-24 | 2016-11-16 | 闫冰倩 | A kind of anti-derotation comes off the manufacture method of bolt |
| CN106246700A (en) * | 2016-08-24 | 2016-12-21 | 闫冰倩 | A kind of manufacture method of shockproof self-locking screw |
| CN106286554A (en) * | 2016-08-24 | 2017-01-04 | 闫冰倩 | The bolt that a kind of anti-derotation comes off |
| CN113530368A (en) * | 2021-08-30 | 2021-10-22 | 泉州博超实业有限公司 | Rotary lock for manhole cover |
-
2000
- 2000-12-08 CN CN 00263212 patent/CN2459476Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089912A (en) * | 2016-08-24 | 2016-11-09 | 闫冰倩 | A kind of shockproof self-locking screw |
| CN106122236A (en) * | 2016-08-24 | 2016-11-16 | 闫冰倩 | A kind of anti-derotation comes off the manufacture method of bolt |
| CN106246700A (en) * | 2016-08-24 | 2016-12-21 | 闫冰倩 | A kind of manufacture method of shockproof self-locking screw |
| CN106286554A (en) * | 2016-08-24 | 2017-01-04 | 闫冰倩 | The bolt that a kind of anti-derotation comes off |
| CN106246700B (en) * | 2016-08-24 | 2018-06-05 | 泰州市万达轮业制造有限公司 | A kind of production method of shockproof self-locking screw |
| CN106286554B (en) * | 2016-08-24 | 2018-06-05 | 江苏中成紧固技术发展股份有限公司 | The bolt that a kind of anti-derotation comes off |
| CN106122236B (en) * | 2016-08-24 | 2018-06-05 | 泰州市万达轮业制造有限公司 | A kind of anti-derotation comes off the production method of bolt |
| CN106089912B (en) * | 2016-08-24 | 2018-06-19 | 杭州通纳五金制造有限公司 | A kind of shockproof self-locking screw |
| CN113530368A (en) * | 2021-08-30 | 2021-10-22 | 泉州博超实业有限公司 | Rotary lock for manhole cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |