CN109356923A - Flange face bolt - Google Patents
Flange face bolt Download PDFInfo
- Publication number
- CN109356923A CN109356923A CN201811496906.1A CN201811496906A CN109356923A CN 109356923 A CN109356923 A CN 109356923A CN 201811496906 A CN201811496906 A CN 201811496906A CN 109356923 A CN109356923 A CN 109356923A
- Authority
- CN
- China
- Prior art keywords
- bolt
- curved section
- straightway
- flange portion
- flange
- 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
- 230000007704 transition Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/06—Specially-shaped heads
-
- 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
- F16B39/284—Locking by means of elastic deformation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The utility model provides a flange face bolt, includes bolt head (1), bolt pole portion (3) and connects screw head (1) with flange portion (2) between bolt pole portion (3), bolt pole portion (3) and flange portion (2) junction adopt bolt fillet (31) transition, flange portion (2) are flange portion bottom surface (21) towards the one side of bolt pole portion (3), and the line segment that flange portion bottom surface (21) axial cross-section become comprises straightway (211) and curve section (213), straightway (211) one end link to each other with bolt fillet (31) end, and the other end links to each other with curve section (213), curve section (213) are outer convex type curve. The pressing force is stronger and the connecting piece is not easy to fall off.
Description
Technical field
The present invention relates to the bolt parts of fastener areas, and in particular to a kind of flange face bolt.
Background technique
Flange face bolt is as a kind of the most commonly used fastener, using very extensive in industrial circle.GB/
A kind of hexagon flange bolt is described in T16674.1-2016, referring to Fig. 3, flange face 4 is the inclined-plane of certain angle, inclination
Angle [alpha] is usually reversed 0.25 ° -1.025 °.Bolt is in rundown process, when flange face 4 and basal plane start to contact, contact site
For bolt flange face outer rim.With being gradually increased for screw-down torque, flange face 4 is gradually varied to face by the line contact of outer rim and connects
Touching, flange face 4 also start flexible deformation, and final realization flange face 4 is bonded with basal plane, and flange face angle becomes 0 °.While by
Bounce is produced in the flexible deformation of flange face 4, certain anti-loose effect can be played.Start flexible deformation in flange face 4
When, flange face 4 and connected piece generate relative motion, and 4 outer of flange face can scrape outward connector surface, will lead to connection
Situations such as there is being scratched even conquassation in part surface, rubbing surface is uneven.
Summary of the invention
The purpose of the present invention is overcoming the problems, such as that existing flange face bolt easily scrapes, is crushed connector surface, one kind is provided
Flange face bolt will not be crushed, and scrape connector surface, clamping force is stronger, is not easy to loosen.
In order to achieve the above object, technical scheme is as follows:
A kind of flange face bolt, including bolt head, bolt shank and it is connected to the screw head and the bolt shank
Between flange portion, the bolt shank and flange portion junction use bolt round corner transition, and the flange portion is towards shank of bolt
The one side in portion is flange portion bottom surface, and line segment formed by the axial cross section of the flange portion bottom surface is made of straightway and curved section, institute
The straightway one end stated is connected with bolt round corner end, and the other end is connected with curved section, and the curved section is male type curve.
The straightway is parallel to the horizontal plane or angle with horizontal plane is in 0.25 ° -1 °.
The straightway is parallel to the horizontal plane.
The radical length of the straightway: radical length=1:2-1:3 of curved section.
The axial height of the curved section: bolt diameter=3:200-3:100.
Further include changeover portion between the straightway and curved section, the changeover portion respectively with straightway and curved section phase
Connection is cut, the two-end-point of the changeover portion is point of contact.
The radical length of straightway: radical length=5:1-10:3 of changeover portion.
The curved section is male type minor arc curve or male type major arc curve or waveform type curve, the wave
Shape type curve protrusions portion is close to flange portion edge section.
The curved section is male type minor arc curve, and the curved section is located at flange portion edge section and horizontal plane phase
It cuts, endpoint of the curved section on flange portion edge is point of contact.
Compared with prior art, the invention has the benefit that
1, line segment formed by the axial cross section of flange portion bottom surface is made of straightway and curved section in the present invention, and curved section is male type
Circular curve, it is line face contact, when tightening that in rundown process, when beginning, flange portion bottom and connector surface contact surface are few
Frictional force it is small, it is less to connector surface bring scratch, after becoming larger with screw-down torque, flange portion bottom surface and connector table
Face is gradually varied to plane-plane contact by line face contact, and transient mode is more smooth and uniform, effectively reduces connected piece surface and is scraped
The case where wiping or being crushed；Straightway prevents final flange portion by pressure to provide enough joint surfaces when final compress
It is excessive to cause to be crushed；After tightening, curved section deformation produces bounce, and amount of elastic deformation is more common, and flange face bolt is bigger,
Clamping force is bigger.
2, straightway is parallel to the horizontal plane in the present invention, and such straightway is easier to be bonded with connector surface, guarantees method
The blue final contact condition in portion bottom surface is plane contact.
3, further include changeover portion between heretofore described straightway and curved section, the changeover portion respectively with straightway
With the tangent connection of curved section, the two-end-point of the changeover portion is point of contact.Stress caused by curve rapid lapse of time deformation can make song
Line segment and straightway junction generate metal fracture, and changeover portion can make in stress to connector surface, be accordingly changed into card
Clamp force.It is that the transition of arc section toward straightway is more smooth uniform simultaneously in rundown process.
4, in the present invention curved section axial height: bolt diameter=3:200-3:100, it is bent if ratio is too low
Line segment is lower, and clamping force reduces, and anti-loose effect weakens, if ratio is excessively high, curved section is got higher, and deformation quantity can increase, and is caused
Power caused by flange face compressing connector surface is bigger, easily damages connector surface by pressure.
5, the radical length of heretofore described straightway: radical length=1:2-1:3 of curved section, curved section with connect
The contact surface on part surface is greater than the contact surface of straightway and connector surface, because of bounce acting surface caused by curved section deformation
Product is big, conducive to the clamping of bolt, while avoiding clamping force excessive and generating scratch to joint face.
6, heretofore described curved section is located at flange portion edge section and horizontal plane is tangent, and the curved section is in flange portion
Endpoint on edge is point of contact.So that flange portion edge is easier to be bonded with connector surface, avoids generating in edge and sharply scrape
Trace.
Detailed description of the invention
Fig. 1 is main view of the invention；
Fig. 2 is partial axial section schematic diagram of the present invention；
Fig. 3 is a kind of partial axial section schematic diagram for hexagon flange bolt that GB/T16674.1-2016 is introduced；
In figure: bolt head 1, flange portion 2, bolt shank 3, flange face 4, flange portion bottom surface 21, bolt round corner 31, straightway
211, changeover portion 212, curved section 213.
Specific embodiment
The present invention is described in further detail with specific embodiment for explanation with reference to the accompanying drawing.
Referring to Fig. 1 and Fig. 2, a kind of flange face bolt, including bolt head 1, bolt shank 3 and it is connected to the screw rod
Flange portion 2 between head 1 and the bolt shank 3, the bolt shank 3 use bolt round corner 31 with 2 junction of flange portion
The one side of transition, the flange portion 2 towards bolt shank 3 is flange portion bottom surface 21, formed by 21 axial cross section of flange portion bottom surface
Line segment is made of straightway 211, changeover portion 212 and curved section 213；
The straightway 211 is parallel to the horizontal plane, and guarantees to provide enough joint surfaces when straightway 211 is final compression,
The guarantee final contact condition of bolt is plane contact, prevents final pressure is excessive from causing to be crushed.
The curved section 213 is male type minor arc curve, and less than 180 °, the curved section 213 is located at central angle
2 edge section of flange portion and horizontal plane are tangent, and endpoint of the curved section 213 on 2 edge of flange portion is point of contact, rundown process
In, flange portion bottom surface is gradually varied to plane-plane contact by line face contact with connector surface, and transient mode is more smooth and uniform, makes
It obtains flange portion edge to be easier to be bonded with connector surface, avoids generating sharp scratch in edge.
Described 211 one end of straightway is connected with 31 end of bolt round corner, the changeover portion 212 and straightway 211 and song
The tangent connection of line segment 213, the two-end-point of the changeover portion 212 are point of contact.Avoid the connection of straightway 211 and curved section 213
Place generates metal fracture.
The radical length of the straightway 211: the radical length of changeover portion 212: radical length=1 of curved section 213:
0.2-0.3:2-3；It ensure that the contact surface on curved section 213 and connector surface is greater than connecing for straightway 211 and connector surface
Contacting surface, because bounce active area caused by 213 deformation of curved section is big, conducive to the clamping of bolt.
The axial height of the curved section 213: bolt diameter=3:200-3:100；The axial height of curved section 213
For from curved section 213 flange portion edge endpoint to another endpoint oblique line height of curved section 213, guaranteeing there are enough clamping forces
In the case where, scratch will not be generated.
Claims (7)
1. a kind of flange face bolt, including bolt head (1), bolt shank (3) and it is connected to the screw head (1) and institute
The flange portion (2) between bolt shank (3) is stated, the bolt shank (3) and flange portion (2) junction use bolt round corner (31)
Transition, the one side of the flange portion (2) towards bolt shank (3) are flange portion bottom surface (21), it is characterised in that: the flange portion
Line segment formed by bottom surface (21) axial cross section is made of straightway (211) and curved section (213), the straightway (211) one
End is connected with bolt round corner (31) end, and the other end is connected with curved section (213), and the curved section (213) is male type curve.
2. a kind of flange face bolt according to claim 1, it is characterised in that: the straightway (211) and horizontal plane
In parallel.
3. a kind of flange face bolt according to claim 1, it is characterised in that: the radical length of the straightway (211):
Radical length=1:2-1:3 of curved section (213).
4. a kind of flange face bolt according to claim 1, it is characterised in that: the axial height of the curved section (213):
Bolt diameter=3:200-3:100.
5. a kind of flange face bolt according to claim 1, it is characterised in that: the straightway (211) and curved section
(213) further include changeover portion (212) between, the changeover portion (212) respectively with straightway (211) and curved section (213) phase
Connection is cut, the two-end-point of the changeover portion (212) is point of contact.
6. a kind of flange face bolt according to claim 5, it is characterised in that: the radical length of straightway (211): transition
Radical length=5:1-10:3 of section (212).
7. a kind of flange face bolt according to claim 1, it is characterised in that: the curved section (213) is male type
Minor arc curve, the curved section (213) is tangent in flange portion (2) edge section and horizontal plane, the curved section (213) and level
The point of contact of face intersection is apart from flange portion bottom surface (21) edge 0.2mm-0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811496906.1A CN109356923A (en) | 2018-12-07 | 2018-12-07 | Flange face bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811496906.1A CN109356923A (en) | 2018-12-07 | 2018-12-07 | Flange face bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109356923A true CN109356923A (en) | 2019-02-19 |
Family
ID=65331812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811496906.1A Pending CN109356923A (en) | 2018-12-07 | 2018-12-07 | Flange face bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109356923A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439911A (en) * | 2019-07-15 | 2019-11-12 | 东风商用车有限公司 | A kind of anti-conquassation flange face bolt |
| CN110439912A (en) * | 2019-07-15 | 2019-11-12 | 东风商用车有限公司 | A kind of locking flange face bolt |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2168077C1 (en) * | 2000-05-16 | 2001-05-27 | Открытое акционерное общество "Автонормаль" | Flanged bolt with shaped head |
| RU2385200C1 (en) * | 2008-09-01 | 2010-03-27 | Открытое акционерное общество "Магнитогорский метизно-калибровочный завод "ММК-МЕТИЗ" | Method to produce bolts with flanges |
| CN201786891U (en) * | 2010-08-09 | 2011-04-06 | 宁波东港紧固件制造有限公司 | Round flat-bottom flange bolt |
| CN202031954U (en) * | 2011-03-25 | 2011-11-09 | 长城汽车股份有限公司 | Bolt and vehicle engine fly wheel structure with same |
| CN204284154U (en) * | 2014-11-03 | 2015-04-22 | 常州常发动力机械有限公司 | A kind of high-strength bolt |
| CN206802045U (en) * | 2017-03-30 | 2017-12-26 | 浙江中通汽车零部件有限公司 | A kind of bolt |
| CN206958057U (en) * | 2017-05-08 | 2018-02-02 | 上海奥达科股份有限公司 | A kind of flange bolt and engine for alloy material auxiliary connection |
| CN207762109U (en) * | 2018-01-26 | 2018-08-24 | 浙江格力威机械股份有限公司 | A kind of flange face bolt |
| CN209398715U (en) * | 2018-12-07 | 2019-09-17 | 东风商用车有限公司 | Flange face bolt |
-
2018
- 2018-12-07 CN CN201811496906.1A patent/CN109356923A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2168077C1 (en) * | 2000-05-16 | 2001-05-27 | Открытое акционерное общество "Автонормаль" | Flanged bolt with shaped head |
| RU2385200C1 (en) * | 2008-09-01 | 2010-03-27 | Открытое акционерное общество "Магнитогорский метизно-калибровочный завод "ММК-МЕТИЗ" | Method to produce bolts with flanges |
| CN201786891U (en) * | 2010-08-09 | 2011-04-06 | 宁波东港紧固件制造有限公司 | Round flat-bottom flange bolt |
| CN202031954U (en) * | 2011-03-25 | 2011-11-09 | 长城汽车股份有限公司 | Bolt and vehicle engine fly wheel structure with same |
| CN204284154U (en) * | 2014-11-03 | 2015-04-22 | 常州常发动力机械有限公司 | A kind of high-strength bolt |
| CN206802045U (en) * | 2017-03-30 | 2017-12-26 | 浙江中通汽车零部件有限公司 | A kind of bolt |
| CN206958057U (en) * | 2017-05-08 | 2018-02-02 | 上海奥达科股份有限公司 | A kind of flange bolt and engine for alloy material auxiliary connection |
| CN207762109U (en) * | 2018-01-26 | 2018-08-24 | 浙江格力威机械股份有限公司 | A kind of flange face bolt |
| CN209398715U (en) * | 2018-12-07 | 2019-09-17 | 东风商用车有限公司 | Flange face bolt |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439911A (en) * | 2019-07-15 | 2019-11-12 | 东风商用车有限公司 | A kind of anti-conquassation flange face bolt |
| CN110439912A (en) * | 2019-07-15 | 2019-11-12 | 东风商用车有限公司 | A kind of locking flange face bolt |
| CN110439912B (en) * | 2019-07-15 | 2024-07-19 | 东风商用车有限公司 | Locking flange face bolt |
| CN110439911B (en) * | 2019-07-15 | 2024-07-19 | 东风商用车有限公司 | Anti-crushing flange face bolt |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |