CN206190700U - Brazier head screw - Google Patents
Brazier head screw Download PDFInfo
- Publication number
- CN206190700U CN206190700U CN201621180569.1U CN201621180569U CN206190700U CN 206190700 U CN206190700 U CN 206190700U CN 201621180569 U CN201621180569 U CN 201621180569U CN 206190700 U CN206190700 U CN 206190700U
- Authority
- CN
- China
- Prior art keywords
- head screw
- brazier
- flat head
- arc groove
- utility
- 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 relates to a brazier head screw, including flat head and threaded rod portion, the outer terminal surface of flat head is the sphere, and it has the plum blossom groove to open on the sphere, the interior terminal surface of flat head lies in threaded rod portion junction periphery is recessed arc groove face, be equipped with annular air discharge duct and the round permanent magnet of a plurality of insert -molded in the arc groove face on the arc groove face. The utility model discloses a brazier head screw can not only effectively prevent to become flexible in transportation or use, has increased the fastening performance moreover, has increased the fail safe nature of transportation to can avoid causing the incident, simple structure, reasonable.
Description
Technical field
The utility model is related to a kind of screw, and in particular to a kind of brazier head screw, belongs to technical field of fastening.
Background technology
Low temperature vacuum thermal insulation container is made up of inner and outer tank, and the mezzanine space between inner and outer tank is evacuated,
So inner canister has just reached good insulation effect.Explosion-protection equipment is mounted in the dump device of outer tank, is true in interlayer
Safe discharge equipment after sky destruction.Explosion-protection equipment is made up of base, Explosion-proof cap, protective cover etc..Explosion-proof cap inner side and interlayer
Space communicates, and outside communicates with atmospheric environment, is pressed on base entirely through inside and outside differential pressure.Protective cover is to prevent Explosion-proof cap to be subjected to
Tank body vacuum interlayer is destroyed after accidental impact, causes thermally insulated container to fail.Protective cover is fixed on base by four screws, is protected
Shield drops can produce two kinds of consequences：First, drop the valve member and table part smashed in valve box；2nd, Explosion-proof cap loses guarantor after dropping
Shield may suffer accidental impact, destroy vacuum interlayer.Therefore screw is fixed and requires necessary reliability, vibrated in transportation
Screw must not have loosening afterwards, so as to prevent protective cover from dropping.But, the dress of screw loosening is not prevented on the current explosion-protection equipment
Put, so be badly in need of providing a kind of structure dropping ensureing that screw will not loosen after vibrated.
Utility model content
The purpose of this utility model is to overcome the shortcomings of that prior art is present, there is provided a kind of brazier head screw, simple structure
And the anti-loose effect of antivibration is good, it is to avoid trigger security incident.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：A kind of brazier head screw, including flat head and
Thread rod part, the outer face of the flat head is sphere, and plum blossom groove is provided with sphere, and the inner face of the flat head is located at
Thread rod part junction periphery is recessed arc groove face；The arc groove face is provided with annular vent groove and multiple inserts
Take shape in the circular permanent magnet in arc groove face.
Preferably, the annular vent groove have two groups, interval setting and be interconnected.
Preferably, the circular permanent magnet has multiple, and angularly array in a ring.
Preferably, the diameter of the flat head and height ratio are 10:1.
Due to the utilization of above-mentioned technical proposal, the utility model has following advantages compared with prior art：
A kind of brazier head screw of the present utility model, can not only effectively prevent from loosening, Er Qiezeng during transport or use
Add fastening performance, increased the security reliability of transport, it is simple and reasonable for structure such that it is able to avoid triggering security incident.
Brief description of the drawings
Technical solutions of the utility model are described further below in conjunction with the accompanying drawings：
Accompanying drawing 1 is a kind of structural representation of brazier head screw of the present utility model；
Accompanying drawing 2 is a kind of structural representation of brazier head screw inner face of the present utility model；
Wherein：1- flat heads；2- thread rod parts；3- plum blossom grooves；4- inner faces；5- arc groove faces；6- annular vent grooves；
7- circular permanent magnets.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail.
As shown in accompanying drawing 1,2, a kind of brazier head screw described in the utility model, including flat head 1 and thread rod part 2,
The outer face of the flat head 1 is sphere, and plum blossom groove 3 is provided with sphere, and the inner face 4 of the flat head 1 is positioned at described
The junction periphery of thread rod part 2 is recessed arc groove face 5；The arc groove face 5 is provided with two groups of interval settings and mutually interconnects
Logical annular vent groove 6 and multiple insert-moldings are in the circular permanent magnet 7 in arc groove face 5.To further provide for fastening performance, circle
The angularly array in a ring of shape permanent magnet 7.
A kind of brazier head screw of the present utility model, using big flat head, the characteristics of relatively wide thin, occurrence be diameter with
Highly than being 10:1, there is elastic deformation space under certain effect power, in strength installs position fixing process, by arc groove face
5 and annular vent groove 6 design, the air between its contact surface is discharged as far as possible, and then after forming negative pressure, then circular permanent magnet
In the presence of 7, can be even closer be fixed on explosion-protection equipment can not only be prevented effectively during transport or use
Loosen, and increased fastening performance, increased the security reliability of transport, such that it is able to avoid triggering security incident.
The above is only concrete application example of the present utility model, any limit is not constituted to protection domain of the present utility model
System.All use equivalents or equivalence replacement and the technical scheme that is formed, all fall within the utility model rights protection scope it
It is interior.
Claims (4)
1. a kind of brazier head screw, including flat head and thread rod part, the outer face of the flat head is sphere, is opened on sphere
There is plum blossom groove, it is characterised in that：The inner face of the flat head is recessed arc positioned at thread rod part junction periphery
Shape groove face；The arc groove face is provided with annular vent groove and multiple insert-moldings in the circular permanent magnet in arc groove face.
2. a kind of brazier head screw according to claim 1, it is characterised in that：The annular vent groove has two groups, interval
Set and be interconnected.
3. a kind of brazier head screw according to claim 2, it is characterised in that：The circular permanent magnet has multiple, and is in
Annular angularly array.
4. a kind of brazier head screw according to claim 2, it is characterised in that：The diameter of the flat head with height ratio be
10:1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621180569.1U CN206190700U (en) | 2016-10-27 | 2016-10-27 | Brazier head screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621180569.1U CN206190700U (en) | 2016-10-27 | 2016-10-27 | Brazier head screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206190700U true CN206190700U (en) | 2017-05-24 |
Family
ID=58732420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621180569.1U Expired - Fee Related CN206190700U (en) | 2016-10-27 | 2016-10-27 | Brazier head screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206190700U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869505A (en) * | 2018-09-13 | 2018-11-23 | 甘建国 | A kind of bolt with nut |
| CN108869506A (en) * | 2018-09-13 | 2018-11-23 | 甘建国 | A kind of bolt that length is adjustable |
-
2016
- 2016-10-27 CN CN201621180569.1U patent/CN206190700U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869505A (en) * | 2018-09-13 | 2018-11-23 | 甘建国 | A kind of bolt with nut |
| CN108869506A (en) * | 2018-09-13 | 2018-11-23 | 甘建国 | A kind of bolt that length is adjustable |
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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 |
Granted publication date: 20170524 Termination date: 20171027 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |