CN207975114U - A kind of fastener with anti-drop function - Google Patents
A kind of fastener with anti-drop function Download PDFInfo
- Publication number
- CN207975114U CN207975114U CN201820417832.7U CN201820417832U CN207975114U CN 207975114 U CN207975114 U CN 207975114U CN 201820417832 U CN201820417832 U CN 201820417832U CN 207975114 U CN207975114 U CN 207975114U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- fastener
- drop function
- interconnecting piece
- nut
- 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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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model discloses a kind of fasteners with anti-drop function, including, nut, the nut interface is formed as hexagon；Screw rod, the screw rod are connected with the nut, and the outer surface of the screw rod is provided with screw thread；Interconnecting piece, the interconnecting piece are arranged in the bottom end of the screw rod；Changeover portion is provided between the screw rod and the nut, the bottom end of the changeover portion is connected with protrusion, blind hole is offered in the interconnecting piece, spring is provided in the blind hole；The utility model is by the setting of protrusion, the phenomenon that preventing bolt from being loosened when tightening, to ensure the normal operation of equipment；The outer surface of screw rod is coated with wear-resistant coating, can effectively prevent the case where fastener is using multiple surface abrasion later, increases the access times and service life of fastener；The utility model simple structure and reasonable design, and manufacturing cost is low.
Description
Technical field
The utility model is related to a kind of fasteners to belong to space flight more particularly to a kind of fastener with anti-drop function
Parts technical field.
Background technology
Bolt need to be matched by head and screw rod (carrying externally threaded cylinder) a kind of fastener dimerous with nut
It closes, for being fastenedly connected two parts for carrying through-hole, this type of attachment claims to be bolted, and such as nut is revolved from bolt
Under, having can be such that the two parts separate, therefore it is to belong to be detachably connected to be bolted.
Currently, bolt in the prior art is mostly outer-hexagonal or hexagon socket head cap screw or flat mouth slot type bolt, these bolts
Bolt could must be threaded by bolt tool (such as common wrench, Allen wrench or bottle opener tool) when in use
In connector, therefore the speed of bolt is screwed in compared with slow, working efficiency is relatively low；In addition these bolts at work, when connected
Connector is when being operated in the working environment that failure of oscillation is not dynamic, and bolt falls off it is easy to appear loose phenomenon, if by these
The bolt being easy to fall off uses the occasion important in aircraft instrument etc., it is easy to cause the generation of accident, therefore existing bolt
Functional reliability and installation effectiveness or not ideal enough.
Utility model content
The purpose of this utility model is in view of the deficienciess of the prior art, providing a kind of fastening with anti-drop function
Part.
To achieve the above object, the utility model provides a kind of fastener with anti-drop function, including, nut, institute
It states nut interface and is formed as hexagon；Screw rod, the screw rod are connected with the nut, and the outer surface of the screw rod is provided with spiral shell
Line；Interconnecting piece, the interconnecting piece are arranged in the bottom end of the screw rod；It is provided with changeover portion between the screw rod and the nut,
The bottom end of the changeover portion is connected with protrusion, and blind hole is offered in the interconnecting piece, spring is provided in the blind hole.
In a kind of fastener with anti-drop function as described above, wherein the screw shaped becomes cylinder, the spiral shell
The outer surface of bar is coated with wear-resistant coating.
In a kind of fastener with anti-drop function as described above, wherein the wear-resistant coating by metal powder or
Ceramic powders form, and the thickness of the wear-resistant coating is 0.1mm-0.3mm.
In a kind of fastener with anti-drop function as described above, wherein the welding manner that projects through is fixed in
On the changeover portion.
In a kind of fastener with anti-drop function as described above, wherein the diameter of the interconnecting piece is less than the spiral shell
The diameter of the diameter of bar, the interconnecting piece is gradually increased by bottom end along the screw rod direction.
In a kind of fastener with anti-drop function as described above, wherein the blind hole and the interconnecting piece are coaxially set
It sets.
In a kind of fastener with anti-drop function as described above, wherein the length of the spring is more than the connection
The length in portion.
In a kind of fastener with anti-drop function as described above, wherein the lower end of the protrusion tilts set upwardly
It sets, inclination angle is 5 ° -10 °, and the diameter of the protrusion is more than the diameter of the screw rod.
In a kind of fastener with anti-drop function as described above, wherein the upper surface of the protrusion is horizontally disposed, institute
The lower face for stating protrusion is provided with adsorption layer, and the adsorption layer is ferromagnetic powder.
The beneficial effects of the utility model are：This fastener with anti-drop function prevents spiral shell by the setting of protrusion
The phenomenon that bolt is loosened when tightening, to ensure the normal operation of equipment；The outer surface of screw rod is coated with wear-resistant coating, energy
It is effectively prevent the case where fastener is using multiple surface abrasion later, increases the access times and service life of fastener；This
Utility model simple structure and reasonable design, and manufacturing cost is low.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram for fastener with anti-drop function that the utility model embodiment provides.
The label of each component of attached drawing is as follows：
Nut 10；
Screw rod 20；Changeover portion 21；Protrusion 22；
Interconnecting piece 30；Blind hole 31；Spring 32.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
The technical solution of the utility model embodiment is clearly and completely described in the attached drawing of type embodiment.Obviously, described
Embodiment is a part of the embodiment of the utility model, instead of all the embodiments.Based on described the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained, shall fall within the protection scope of the present invention.
One embodiment of the utility model provides a kind of fastener with anti-drop function, is avoided in fastener cycle
Bolt looseness falls off.
Referring to Fig. 1, a kind of fastener with anti-drop function, including：Nut 10, screw rod 20 and interconnecting piece 30.
Specifically, 10 interface of the nut is formed as hexagon, and the screw rod 20 is connected with the nut 10, the screw rod
20 outer surface is provided with screw thread, and the interconnecting piece 30 is arranged in the bottom end of the screw rod 20, the screw rod 20 and the nut
Changeover portion 21 is provided between 10, the bottom of the changeover portion 21 is connected with protrusion 22, blind hole is offered in the interconnecting piece 30
31, the blind hole 31 extends to inside the screw rod 20, and spring 32 is provided in the blind hole 31, and described raised 22 pass through welding
Mode is fixed on the changeover portion 21, and in the present embodiment, fastener prevents bolt from tightening by raised 22 setting
When the phenomenon that loosening, to ensure the normal operation of equipment.
In the present embodiment, the screw rod 20 is formed as cylindrical, and the outer surface of the screw rod 20 is coated with wear-resistant coating, institute
Wear-resistant coating to be stated to be made of metal powder or ceramic powders, the thickness of the wear-resistant coating is 0.1mm-0.3mm, after tested,
The thickness of the wear-resistant coating is 0.2, mm, and at low cost, effect is good, can effectively prevent fastener and uses multiple surface abrasion later
The case where, increase the access times and service life of fastener.
In the present embodiment, the diameter of the interconnecting piece 30 is less than the diameter of the screw rod 20, the diameter of the interconnecting piece 30
Gradually increased along 20 direction of the screw rod by bottom end, the blind hole 31 and the interconnecting piece 30 are coaxially disposed, the spring 32
Length be more than the length of the interconnecting piece 30, the bottom face diameter of the interconnecting piece 30 is less than the diameter of the screw rod 20, just
In fastener is embedded into required workpiece.
In the present embodiment, raised 22 lower end upwardly be obliquely installed, inclination angle be 5 ° -10 °, preferably 8 °,
Raised 22 diameter is more than the diameter of the screw rod 20, and raised 22 upper surface is horizontally disposed, described raised 22
Lower face is provided with adsorption layer, and the adsorption layer is ferromagnetic powder, prevents fastener from being fallen from installation tool, provides installation
Convenience.
To sum up, according to a kind of fastener with anti-drop function described in the utility model by the setting of protrusion,
The phenomenon that preventing bolt from being loosened when tightening, to ensure the normal operation of equipment；The outer surface of screw rod is coated with wear-resisting
Coating can effectively prevent the case where fastener is using multiple surface abrasion later, increase access times and the use of fastener
Service life；The utility model simple structure and reasonable design, and manufacturing cost is low.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (9)
1. a kind of fastener with anti-drop function, including,
Nut (10), nut (10) interface are formed as hexagon；
Screw rod (20), the screw rod (20) are connected with the nut (10), and the outer surface of the screw rod (20) is provided with screw thread；
Interconnecting piece (30), bottom end of interconnecting piece (30) setting in the screw rod (20)；It is characterized in that：The screw rod (20)
Changeover portion (21) is provided between the nut (10), the bottom of the changeover portion (21) is connected with raised (22), the company
Blind hole (31) is offered in socket part (30), and spring (32) is provided in the blind hole (31).
2. a kind of fastener with anti-drop function according to claim 1, it is characterised in that：The screw rod (20) is formed
Outer surface for cylinder, the screw rod (20) is coated with wear-resistant coating.
3. a kind of fastener with anti-drop function according to claim 2, it is characterised in that：The wear-resistant coating is by gold
Belong to powder or ceramic powders composition, the thickness of the wear-resistant coating is 0.1mm-0.3mm.
4. a kind of fastener with anti-drop function according to claim 1, it is characterised in that：The protrusion (22) passes through
Welding manner is fixed on the changeover portion (21).
5. a kind of fastener with anti-drop function according to claim 1, it is characterised in that：The interconnecting piece (30)
Diameter is less than the diameter of the screw rod (20), and the diameter of the interconnecting piece (30) is gradual along the screw rod (20) direction by bottom end
Increase.
6. a kind of fastener with anti-drop function according to claim 1, it is characterised in that：The blind hole (31) and institute
State interconnecting piece (30) coaxial arrangement.
7. a kind of fastener with anti-drop function according to claim 1, it is characterised in that：The length of the spring (32)
Length of the degree more than the interconnecting piece (30).
8. a kind of fastener with anti-drop function according to claim 1, it is characterised in that：Under the protrusion (22)
End face is obliquely installed upwards, and inclination angle is 5 ° -10 °, and the diameter of the protrusion (22) is more than the diameter of the screw rod (20).
9. a kind of fastener with anti-drop function according to claim 8, it is characterised in that：It is described protrusion (22) it is upper
End face is horizontally disposed, and the lower face of the protrusion (22) is provided with adsorption layer, and the adsorption layer is ferromagnetic powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820417832.7U CN207975114U (en) | 2018-03-27 | 2018-03-27 | A kind of fastener with anti-drop function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820417832.7U CN207975114U (en) | 2018-03-27 | 2018-03-27 | A kind of fastener with anti-drop function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207975114U true CN207975114U (en) | 2018-10-16 |
Family
ID=63763342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820417832.7U Expired - Fee Related CN207975114U (en) | 2018-03-27 | 2018-03-27 | A kind of fastener with anti-drop function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207975114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135563A (en) * | 2021-11-26 | 2022-03-04 | 中国北方发动机研究所(天津) | Integral anti-drop bolt structure |
-
2018
- 2018-03-27 CN CN201820417832.7U patent/CN207975114U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135563A (en) * | 2021-11-26 | 2022-03-04 | 中国北方发动机研究所(天津) | Integral anti-drop bolt structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20181016 |