CN111649055A - Fastener capable of preventing loosening - Google Patents
Fastener capable of preventing loosening Download PDFInfo
- Publication number
- CN111649055A CN111649055A CN202010283426.8A CN202010283426A CN111649055A CN 111649055 A CN111649055 A CN 111649055A CN 202010283426 A CN202010283426 A CN 202010283426A CN 111649055 A CN111649055 A CN 111649055A
- Authority
- CN
- China
- Prior art keywords
- bolt
- nut
- fastener
- pawl
- loosening
- 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
- 238000001125 extrusion Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/32—Locking by means of a pawl or pawl-like tongue
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- 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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The invention relates to a fastener, in particular to a loosening-preventing fastener. Set up stopping groove (5) on bolt (1), set up on nut (4) and have elastic pawl (6), during the use, pawl (6) are out of shape and are outwards expanded under the extrusion of bolt (1) afterbody, and after the dynamics that reaches the pretension stopped rotating, pawl (6) are because elasticity makes its card go into stopping groove (5) on bolt (1), deadlocks the not hard up direction of bolt (1) and nut (4), thereby reaches the purpose that prevents to become flexible. The invention has the main characteristics of simple structure, high safety and low cost, can be conveniently assembled and disassembled by matching with the designed tool, realizes recycling and greatly reduces the maintenance cost. Can be widely applied to high-speed rail, engineering machinery, industrial production, automobiles, agricultural machinery and the like.
Description
Technical Field
The invention relates to a fastener, in particular to a loosening-preventing fastener.
Technical Field
At present, the fastener has been applied to each corner, the general application scene does not have high requirements for the fastener, ordinary fastener can be competent at all, and to some scenes such as vibration, ordinary fastener just very easily comes loose, cause the loss, so there has been the research of locking fastener, the most successful present belongs to and must firmly locknut, utilize the wedge structure in the nut thread to increase the frictional force in a large number, reach the purpose of locking, the shortcoming of this kind of structure is that the requirement for the hardness of bolt nut is fairly high, and the processing degree of difficulty and machining precision and cost are all higher, once the tooth form of bolt nut takes place the deformation and has lost locking effect. While the spring washer used in the conventional fastener is pressed flat during use, the nut surface is also flat and does not substantially serve the purpose of preventing loosening.
Disclosure of Invention
In order to solve the defects of the prior anti-loosening technology, the invention provides a fastening piece for preventing loosening.
The technical scheme adopted by the invention is as follows: the bolt is provided with the retaining groove, the nut is provided with the pawl, the root of the pawl is fixed on the nut, the middle of the pawl has certain elasticity, when the nut is matched with the bolt for use, the head of the pawl is extruded by the bolt to expand outwards, when the nut is pre-tightened to be finished, the head of the pawl is clamped into the retaining groove under the action of the elasticity, so that the nut cannot rotate in the loosening direction, and the purpose of preventing loosening is achieved.
The invention has the main characteristics of simple structure, high safety and low cost, can realize recycling by matching with the designed tool, and greatly reduces the maintenance cost.
Drawings
FIG. 1 is a front view of a nut
FIG. 2 is a left side view of the nut
FIG. 3 is a front view of the bolt
FIG. 4 is a left side view of the bolt
FIG. 5 is a front view of a bolt used in conjunction with a nut
FIG. 6 is a left side view of a bolt in use with a nut
In fig. 6: 1. bolt, 2, work pieces 1, 3, work pieces 2, 4, nut, 5, backstop groove on the bolt, 6, pawl on the nut.
Detailed Description
The following further description is made with reference to the accompanying drawings
In fig. 6, the bolt (1) is provided with a retaining groove (5) which is equivalent to a ratchet, the bolt (1) is inserted into a preset fixing hole of a workpiece (1), (2) and a workpiece (2), (3), the nut (4) is twisted, in the pre-tightening process, the pawl (6) expands outwards under the extrusion of the tail part of the bolt (1), after the pre-tightening is finished, the pawl (6) is clamped into the retaining groove (5) under the elastic action, the loosening direction of the nut (4) and the bolt (1) is locked, and the workpiece (1), (2) and the workpiece (2), (3) are firmly fixed together.
General fastener usage is primarily in the following three use scenarios: 1. two or more workpieces are fastened together by bolts (1) and nuts (4), in the most common scenario, one bolt (1) and one nut (4) of the present invention are used to fasten the workpieces together. 2. The present invention is not suitable for this scenario when two or more workpieces are fastened together with an outermost workpiece being internally threaded. 3. Two or more workpieces are fastened together, wherein one outermost workpiece is provided with a fixed bolt, and in this case, the workpieces can be well fastened together only by arranging a backstop groove on the bolt and using one nut (4) of the invention.
Claims (3)
1. A fastener for preventing the loosening of nut and bolt is composed of bolt and nut, and features that the ratchet is used to lock the nut and bolt in the loosening direction without influencing the pre-tightening rotation of nut and bolt.
2. The fastener of claim 1 wherein the nut is provided with a detent.
3. The fastener of claim 1 wherein the bolt is provided with a retaining groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010283426.8A CN111649055A (en) | 2020-04-08 | 2020-04-08 | Fastener capable of preventing loosening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010283426.8A CN111649055A (en) | 2020-04-08 | 2020-04-08 | Fastener capable of preventing loosening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111649055A true CN111649055A (en) | 2020-09-11 |
Family
ID=72352399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010283426.8A Pending CN111649055A (en) | 2020-04-08 | 2020-04-08 | Fastener capable of preventing loosening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111649055A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992214A (en) * | 2022-06-21 | 2022-09-02 | 冰轮环境技术股份有限公司 | Check bolt structure |
-
2020
- 2020-04-08 CN CN202010283426.8A patent/CN111649055A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992214A (en) * | 2022-06-21 | 2022-09-02 | 冰轮环境技术股份有限公司 | Check bolt structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |