CN205001334U - Anti -skidding bolt is used to car - Google Patents
Anti -skidding bolt is used to car Download PDFInfo
- Publication number
- CN205001334U CN205001334U CN201520621688.5U CN201520621688U CN205001334U CN 205001334 U CN205001334 U CN 205001334U CN 201520621688 U CN201520621688 U CN 201520621688U CN 205001334 U CN205001334 U CN 205001334U
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- CN
- China
- Prior art keywords
- square neck
- neck post
- bolt
- diameter
- hemisphere
- 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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- Body Structure For Vehicles (AREA)
Abstract
The utility model discloses an anti -skidding bolt is used to car belongs to auto -parts technical field, and it is including aluminum -plastic laminated tube, bolt cylinder and connecting bolt cylinder and aluminum -plastic laminated tube's square neck post, aluminum -plastic laminated tube holds including the hemisphere button head, the shaping has the cylindricality body that diameter and terminal surface size equal on the hemisphere button head end terminal surface, the thickness B of hemisphere button head end is 3 with cylindricality body diameter D's proportion: 10-7: 20, the width H of square neck post is 1 with cylindricality body diameter D's proportion: 2-3: 5, just the four corners of square neck post is the arcwall face. The utility model discloses cold extrusion one shot forming can be realized to the anti -skidding bolt of structure, and not only the metal internal flow is even when precision height but also cold extrusion, improves product quality greatly, reduces the disqualification rate.
Description
technical field:
The utility model relates to technical field of automobile, particularly relates to a kind of automobile Antisliding bolt.
background technique:
Square neck in use, embeds in the groove of connected piece by round head square neck bolt, reduces the height of protuberate, then from the negative by screw-driving, the link of this structure has anti-skidding firm effect, also not easily loosens, be widely used in auto parts machinery field during vibrations.
The special construction of round end and square neck is contained in this structure of round head square neck bolt; this structure when cold extrusion shaped, interior metal usually can be caused to flow uneven because aspect ratio is inappropriate or mobility is excessive; thus make the problems such as cracking appears in bolt surface or intensity detection is not up to standard; defect rate is high; and mould is stressed also evenly enough, die life shortens.
model utility content:
The purpose of this utility model is exactly to solve existing issue, and carry a kind of automobile Antisliding bolt, realize cold hobbing once-through, not only precision is high and cold hobbing time metal inside flowing evenly, mould is stressed also even, greatly improve the quality of products, reduce disqualification rate, improve die life simultaneously.
Technology solution of the present utility model is as follows:
Automobile Antisliding bolt, it includes nuts, the square neck post of bolt cylinder and connecting bolt cylinder and nuts, described nuts includes hemisphere blunt end, described hemisphere blunt end end face forms diameter and the equal-sized cylindrical body of end face, the thickness B of described hemisphere blunt end and the ratio of cylindrical body diameter D are 3:10 ~ 7:20, and the width H of described square neck post and the ratio of cylindrical body diameter D are 1:2 ~ 3:5, and the corner of described square neck post is arc shaped surface.
As preferably, the rounded face that the arc shaped surface of described square neck post corner is is the center of circle with square neck post central point, the ratio between the diameter d of described arc shaped surface and the width H of square neck post is 13:10 ~ 7:5.
As preferably, the joint between described nuts and square neck post and between square neck post and bolt cylinder all adopts round-corner transition, and described fillet radius is not less than 1mm.
As preferably, the ratio between the width H of described bolt column diameter A and square neck post is 3:4 ~ 17:20.
The beneficial effects of the utility model are:
The Antisliding bolt of the utility model structure can realize cold hobbing once-through, not only precision is high but also nuts comprises hemisphere blunt end and cylindrical body, the thickness proportion of hemisphere blunt end is moderate, ratio between square neck post and bolt cylinder is also moderate, when cold hobbing, metal inside flowing evenly, mould stressed also even, greatly improves the quality of products, reduce disqualification rate, improve the mold use life-span.
accompanying drawing illustrates:
Fig. 1 is the utility model structure front schematic view;
Fig. 2 is the worm's eye view of Fig. 1.
In accompanying drawing: 1, nuts; 2, bolt cylinder; 3, square neck post; 11, hemisphere blunt end; 12, cylindrical body.
embodiment:
As shown in Figure 1-2, automobile Antisliding bolt, it includes nuts 1, the square neck post 3 of bolt cylinder 2 and connecting bolt cylinder 2 and nuts 1, described nuts 1 includes hemisphere blunt end 11, described hemisphere blunt end 11 end face forms diameter and the equal-sized cylindrical body 12 of end face, the thickness B of described hemisphere blunt end 11 and the ratio of cylindrical body 12 diameter D are 3:10 ~ 7:20, the width H of described square neck post 3 and the ratio of cylindrical body 12 diameter D are 1:2 ~ 3:5, and the corner of described square neck post 3 is arc shaped surface, need when cold hobbing to have been come by patrix and counterdie matched moulds, hemisphere blunt end 11 is arranged in patrix, by arranging cylindrical body 12, to ensure to realize hemisphere blunt end 11 shaping smoothly.
Particularly, the rounded face that the arc shaped surface of described 3 four jiaos, square neck post is is the center of circle with square neck post 3 central point, ratio between the diameter d of described arc shaped surface and the width H of square neck post 3 is 13:10 ~ 7:5, ratio is too small, and the deformation quantity of metal is excessive easily occurs reject, and ratio is excessive, and the pressure that mould can be made to be subject to is excessive.
Particularly, the joint between described nuts 1 and square neck post 3 and between square neck post 3 and bolt cylinder 2 all adopts round-corner transition, and described fillet radius is not less than 1mm, makes mould uniform force when cold hobbing, increases the service life.
Particularly, the ratio between described bolt cylinder 2 diameter A and the width H of square neck post 3 is 3:4 ~ 17:20, and ratio excessive then direction neck post 3 is close with bolt cylinder 2 size, affect anti-skidding firm effect, if ratio is too small, then easily cause deformation quantity gap large when cold hobbing, disqualification rate raises.
The foregoing is only preferred embodiment of the present utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
Claims (4)
1. automobile Antisliding bolt, it includes nuts (1), the square neck post (3) of bolt cylinder (2) and connecting bolt cylinder (2) and nuts (1), it is characterized in that: described nuts (1) includes hemisphere blunt end (11), described hemisphere blunt end (11) end face forms diameter and the equal-sized cylindrical body of end face (12), the thickness B of described hemisphere blunt end (11) and the ratio of cylindrical body (12) diameter D are 3:10 ~ 7:20, the described width H of square neck post (3) and the ratio of cylindrical body (12) diameter D are 1:2 ~ 3:5, and the corner of described square neck post (3) is arc shaped surface.
2. automobile Antisliding bolt according to claim 1, it is characterized in that: the arc shaped surface of described square neck post (3) corner is be the rounded face in the center of circle with square neck post (3) central point, and the ratio between the diameter d of described arc shaped surface and the width H of square neck post (3) is 13:10 ~ 7:5.
3. automobile Antisliding bolt according to claim 1, it is characterized in that: the joint between described nuts (1) and square neck post (3) and between square neck post (3) and bolt cylinder (2) all adopts round-corner transition, and described fillet radius is not less than 1mm.
4. automobile Antisliding bolt according to claim 1, is characterized in that: the ratio between described bolt cylinder (2) diameter A and the width H of square neck post (3) is 3:4 ~ 17:20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520621688.5U CN205001334U (en) | 2015-08-18 | 2015-08-18 | Anti -skidding bolt is used to car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520621688.5U CN205001334U (en) | 2015-08-18 | 2015-08-18 | Anti -skidding bolt is used to car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205001334U true CN205001334U (en) | 2016-01-27 |
Family
ID=55158223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520621688.5U Expired - Fee Related CN205001334U (en) | 2015-08-18 | 2015-08-18 | Anti -skidding bolt is used to car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205001334U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931514A (en) * | 2017-12-26 | 2018-04-20 | 重庆爵狼摩托车配件有限公司 | A kind of chain riveting machine and its vehicle |
-
2015
- 2015-08-18 CN CN201520621688.5U patent/CN205001334U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931514A (en) * | 2017-12-26 | 2018-04-20 | 重庆爵狼摩托车配件有限公司 | A kind of chain riveting machine and its vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160127 Termination date: 20180818 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |