CN204127075U - A kind of U bolt - Google Patents
A kind of U bolt Download PDFInfo
- Publication number
- CN204127075U CN204127075U CN201420481900.8U CN201420481900U CN204127075U CN 204127075 U CN204127075 U CN 204127075U CN 201420481900 U CN201420481900 U CN 201420481900U CN 204127075 U CN204127075 U CN 204127075U
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- Prior art keywords
- section
- thread
- curved segment
- bolt
- thread section
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- Expired - Fee Related
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- 238000005452 bending Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000007787 solid Substances 0.000 abstract description 7
- 238000002360 preparation method Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 239000000758 substrate Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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Abstract
The utility model discloses a kind of U bolt, comprise both sides right cylinder section parallel to each other and the curved segment being connected two right cylinder sections, right cylinder section is divided into linkage section and thread section, and thread section is connected with curved segment by linkage section, and the outer wall of thread section is laid with outside thread; The working surface of linkage section is plane, and the working surface of curved segment is the plane of bending, and both working surfaces seamlessly transit.In use, be that face contacts completely between its working surface with fastened thing, area of contact reaches 100% to such U bolt, has good fastening effect.U bolt of the present utility model in the preparation, only need carry out cold moudling to the solid round steel of whole piece strip, one or pair of planar is extruded in length direction, double thread section corresponding part carries out rolling tooth again, curved portion on thread section corresponding part outer wall forms outside thread, finally again curved segment corresponding part is converted into bending, processing technology is extremely simple.In order to make thread section work more reliable, can by thread section again cold moudling be cylindric.
Description
Technical field
The utility model relates to fastening connection piece technical field, specifically a kind of U bolt.
Background technique
U bolt is generally used for Motor Vehicle fastening connection piece, and it adopts round steel material usually, and be provided with externally threaded screw section at the two end part of bolt, screw section coordinates with specialized nut, thus realizes being fastenedly connected of different parts.The screw section of traditional U bolt and the cross section in non-threaded portion are circle, and the way of contact of this kind of U bolt and link is linear contact lay, and area of contact is little, and normal appearance connects unstable situation.
Chinese invention patent application 201310083313.3 discloses a kind of U bolt and pre-shaping, curving apparatus and hardening and tempering method, as shown in Figure 1 and Figure 2, U bolt comprises both sides right cylinder section 31 parallel to each other, connects the curved segment of two right cylinder sections, described right cylinder section 31 is provided with screw section 33, the outer wall of screw section 33 is provided with outside thread, and described curved segment comprises the plat part 32 being positioned at middle part, the transition arcs portion connecting plat part 32 and both sides right cylinder section 31.It is by flattening process to curved segment local, and the curved segment local of U bolt changes into plane-plane contact with the contact of connected element from linear contact lay, and the area of contact of its partial circle segmental arc and fastened thing reaches more than 95%.Add U bolt and the area of contact being connected thing, effectively prevent from connecting unstable situation.
Due to U bolt use time, be fastenedly connected by the outside thread of screw section and the incompatible realization of nut lock, whether the part near screw section on such U bolt can have great impact with fastened thing Contact fastening effect.Above-mentioned its screw section of this U bolt only accounts for a part for right cylinder section, and the non-threaded portion of right cylinder section is cylindric, is still linear contact lay with the contact of fastened thing, and the fastening effect of U bolt is made a discount greatly; And curved segment is transition arcs portion near the part of right cylinder section, the working surface in this transition arcs portion has certain radian, and cannot reach face completely between fastened thing and contacts, and fastening effect also can be caused to decline.
In view of this, claimant furthers investigate U bolt, overcomes the problem that existing U bolt fastening effect is undesirable, then has this case to produce.
Model utility content
The purpose of this utility model is to provide a kind of U bolt with good fastening effect.
To achieve these goals, the utility model adopts following technological scheme:
A kind of U bolt, comprise both sides right cylinder section parallel to each other and the curved segment being connected two right cylinder sections, described right cylinder section is divided into linkage section and thread section, and described thread section is connected with described curved segment by described linkage section, and the outer wall of described thread section is laid with outside thread; The working surface of described linkage section is plane, and the working surface of described curved segment is the plane of bending, and both working surfaces seamlessly transit.
All arcuately, this is arc has the arc-shaped side of a straight flange and straight flange tandem array therewith, and this straight flange corresponds to above-mentioned working surface in the cross section of described linkage section and described curved segment.
The cross section of described linkage section and described curved segment is all in cydariform, and this cydariform is formed by a pair straight flange and a pair arc-shaped side tandem array, and this pair straight flange corresponds to above-mentioned working surface and the back side thereof.
Described thread section is cylindric, and described outside thread is laid on its columned outer wall.
Arcuately, this is arc has the arc-shaped side of a straight flange and straight flange tandem array therewith in the cross section of described thread section, described outside thread be laid in described thread section corresponds to this arc-shaped side outer wall on.
The cross section of described thread section is all in cydariform, and this cydariform is formed by a pair straight flange and a pair arc-shaped side tandem array, and described outside thread is laid on described thread section corresponding on the outer wall of this pair arc-shaped side.
After adopting technique scheme, U bolt of the present utility model, the working surface of its linkage section is plane, and the working surface of curved segment is the plane of bending, and both working surfaces seamlessly transit.In use, be that face contacts completely between its working surface with fastened thing, area of contact reaches 100% to such U bolt, has good fastening effect.
In the utility model, the cross section of linkage section and curved segment all can arcuately or cydariform, that is, inner side be plane or inside and outside both sides all in plane, in order to simplified processing process, thread section can be pressed into cross section arcuately or cydariform with linkage section together with curved segment.Also thread section can be reprocessed into cylindrical, make thread section work more reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of U bolt in prior art;
Fig. 2 is the stereogram of Fig. 1;
Fig. 3 is the structural representation of the utility model U bolt embodiment one;
Fig. 3-1 is the schematic cross-section of right cylinder section and curved segment in Fig. 3;
Fig. 4 is the structural representation of the utility model U bolt embodiment two;
Fig. 4-1 is the schematic cross-section of Fig. 4 middle connecting segment and curved segment;
Fig. 5 is the structural representation of the utility model U bolt embodiment three;
Fig. 5-1 is the schematic cross-section of right cylinder section and curved segment in Fig. 5;
Fig. 6 is the structural representation of the utility model U bolt embodiment four;
Fig. 6-1 is the schematic cross-section of Fig. 6 middle connecting segment and curved segment.
Embodiment
Embodiment one:
U bolt of the present utility model, embodiment one as shown in Figure 3, comprise both sides right cylinder section 1 parallel to each other and the curved segment 2 being connected two right cylinder sections, described right cylinder section 1 is divided into linkage section 11 and thread section 12, described thread section 12 is connected with described curved segment 2 by described linkage section 11, and the outer wall of described thread section 12 is laid with outside thread.
Right cylinder section 1 and curved segment 2 are structure as a whole, the cross section of right cylinder section 1 and the cross section of curved segment 2 are identical arc, as shown in figure 3-1, this is arc has the arc-shaped side 4 of a straight flange 3 and straight flange tandem array therewith, straight flange 3 correspondence be the inner side surface of right cylinder section 1 and curved segment 2, this inner side surface is also the working surface of linkage section 11 and curved segment 2, and the working surface of linkage section 11 is plane, the working surface of curved segment 2 is the plane of bending, and the working surface of the working surface of linkage section 11 and curved segment 2 seamlessly transits one-body molded.The outside thread of thread section 12 is laid on thread section 12 corresponding on the outer wall of this arc-shaped side 4.
The preparation method of the present embodiment U bolt, realizes as follows:
One, cold-press process is adopted to carry out cold moudling to the solid round steel of strip, extrude a plane along its length, obtain the solid steel billet of cross section strip arcuately, this is arc has the arc-shaped side of a straight flange and straight flange tandem array therewith, and this straight flange corresponds to the linkage section of U bolt and the working surface of curved segment;
Two, according to U bolt Len req, the solid steel billet of strip through step one cold moudling is cut, obtain the base substrate of U bolt, the base substrate of this U bolt has the right cylinder section corresponding part at two ends and middle curved segment corresponding part according to the structure of U bolt, right cylinder section corresponding part has thread section corresponding part and linkage section corresponding part, and linkage section corresponding part is between corresponding thread section corresponding part and curved segment corresponding part;
Three, roll tooth to above-mentioned thread section corresponding part, the part corresponding to above-mentioned arc-shaped side on the outer wall of above-mentioned thread section corresponding part forms outside thread;
Four, using the appropriate section of the plane of step one gained as the inner side surface of described linkage section corresponding part and described curved segment corresponding part, above-mentioned curved segment corresponding part is converted into bending according to the designing requirement of U bolt, namely obtain U bolt, namely the inner side surface of described linkage section corresponding part and described curved segment corresponding part corresponds to the working surface of described linkage section and described curved segment.
Embodiment two:
As shown in Fig. 4 and Fig. 4-1, the difference of the present embodiment and embodiment one is only: thread section 12 is in cylindric, and the outside thread of thread section 12 is laid on its columned outer wall.
The preparation method of the present embodiment and the difference of embodiment one are only: between step 2 and step 3, also have second time cold moudling operation, namely adopt cold-press process double thread section corresponding part to carry out cold moudling, make thread section corresponding part be cylindric.And step 3 changes into: roll tooth to this columned thread section corresponding part, on the outer wall of columned thread section corresponding part, form outside thread.
Embodiment three:
U bolt of the present utility model, embodiment three as shown in Figure 5, comprise both sides right cylinder section 1 parallel to each other and the curved segment 2 being connected two right cylinder sections, described right cylinder section 1 is divided into linkage section 11 and thread section 12, described thread section 12 is connected with described curved segment 2 by described linkage section 11, and the outer wall of described thread section 12 is laid with outside thread.
Right cylinder section 1 and curved segment 2 are structure as a whole, the cross section of right cylinder section 1 and the cross section of curved segment 2 are identical cydariform, as shown in fig. 5-1, this cydariform is formed by a pair straight flange 5 and a pair arc-shaped side 6 tandem array, a pair straight flange 5 correspondence be the inner side surface of right cylinder section 1 and curved segment 2, and the outer side surface of right cylinder section 1 and curved segment 2, this inner side surface is also the working surface of linkage section 11 and curved segment 2, the working surface of linkage section 11 is plane, the working surface of curved segment 2 is the plane of bending, and the working surface of the working surface of linkage section 11 and curved segment 2 seamlessly transits one-body molded.The outside thread of thread section 12 is laid on thread section 12 corresponding on the outer wall of this pair arc-shaped side 6.
The preparation method of the present embodiment U bolt, realizes as follows:
One, cold-press process is adopted to carry out cold moudling to the solid round steel of strip, extrude pair of planar along its length, obtain the solid steel billet of strip that cross section is cydariform, this cydariform is formed by a pair straight flange and a pair arc-shaped side tandem array, this a pair straight flange, wherein while correspond to the linkage section of U bolt and the working surface of curved segment, another side corresponds to the back side of the linkage section of U bolt and the working surface of curved segment;
Two, according to U bolt Len req, the solid steel billet of strip through step one cold moudling is cut, obtain the base substrate of U bolt, the base substrate of this U bolt has the right cylinder section corresponding part at two ends and middle curved segment corresponding part according to the structure of U bolt, right cylinder section corresponding part has thread section corresponding part and linkage section corresponding part, and linkage section corresponding part is between corresponding thread section corresponding part and curved segment corresponding part;
Three, roll tooth to above-mentioned thread section corresponding part, the part corresponding to above-mentioned a pair arc-shaped side on the outer wall of above-mentioned thread section corresponding part forms outside thread;
Four, using the appropriate section of one of them plane of step one gained as the inner side surface of described linkage section corresponding part and described curved segment corresponding part, above-mentioned curved segment corresponding part is converted into bending according to the designing requirement of U bolt, namely obtain U bolt, namely the inner side surface of described linkage section corresponding part and described curved segment corresponding part corresponds to the working surface of described linkage section and described curved segment.
Embodiment four:
As shown in Fig. 6 and Fig. 6-1, the difference of the present embodiment and embodiment three is only: thread section 12 is in cylindric, and thread section 12 outside thread is laid on its columned outer wall.
The preparation method of the present embodiment and the difference of embodiment three are only: between step 2 and step 3, also have second time cold moudling operation, namely adopt cold-press process double thread section corresponding part to carry out cold moudling, make thread section corresponding part be cylindric.And step 3 changes into: roll tooth to this columned thread section corresponding part, on the outer wall of columned thread section corresponding part, form outside thread.
Claims (6)
1. a U bolt, comprise both sides right cylinder section parallel to each other and the curved segment being connected two right cylinder sections, described right cylinder section is divided into linkage section and thread section, and described thread section is connected with described curved segment by described linkage section, and the outer wall of described thread section is laid with outside thread; It is characterized in that: the working surface of described linkage section is plane, the working surface of described curved segment is the plane of bending, and both working surfaces seamlessly transit.
2. a kind of U bolt according to claim 1, is characterized in that: all arcuately, this is arc has the arc-shaped side of a straight flange and straight flange tandem array therewith, and this straight flange corresponds to above-mentioned working surface in the cross section of described linkage section and described curved segment.
3. a kind of U bolt according to claim 1, is characterized in that: the cross section of described linkage section and described curved segment is all in cydariform, and this cydariform is formed by a pair straight flange and a pair arc-shaped side tandem array, and this pair straight flange corresponds to above-mentioned working surface and the back side thereof.
4. a kind of U bolt according to any one of claim 1-3, is characterized in that: described thread section is cylindric, and described outside thread is laid on its columned outer wall.
5. a kind of U bolt according to any one of claim 1-3, it is characterized in that: the cross section of described thread section arcuately, this is arc has the arc-shaped side of a straight flange and straight flange tandem array therewith, described outside thread be laid in described thread section corresponds to this arc-shaped side outer wall on.
6. a kind of U bolt according to any one of claim 1-3, it is characterized in that: the cross section of described thread section is all in cydariform, this cydariform is formed by a pair straight flange and a pair arc-shaped side tandem array, and described outside thread is laid on described thread section corresponding on the outer wall of this pair arc-shaped side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420481900.8U CN204127075U (en) | 2014-08-25 | 2014-08-25 | A kind of U bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420481900.8U CN204127075U (en) | 2014-08-25 | 2014-08-25 | A kind of U bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204127075U true CN204127075U (en) | 2015-01-28 |
Family
ID=52383434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420481900.8U Expired - Fee Related CN204127075U (en) | 2014-08-25 | 2014-08-25 | A kind of U bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204127075U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295586A (en) * | 2014-08-25 | 2015-01-21 | 蒋福泽 | U-shaped bolt and manufacturing method thereof |
| CN107131197A (en) * | 2017-05-03 | 2017-09-05 | 杨聪辉 | A kind of U-bolt and its manufacture craft |
| CN109185310A (en) * | 2018-11-29 | 2019-01-11 | 海盐万瑞标准件有限公司 | A kind of compact type U-bolt |
-
2014
- 2014-08-25 CN CN201420481900.8U patent/CN204127075U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295586A (en) * | 2014-08-25 | 2015-01-21 | 蒋福泽 | U-shaped bolt and manufacturing method thereof |
| CN107131197A (en) * | 2017-05-03 | 2017-09-05 | 杨聪辉 | A kind of U-bolt and its manufacture craft |
| CN109185310A (en) * | 2018-11-29 | 2019-01-11 | 海盐万瑞标准件有限公司 | A kind of compact type U-bolt |
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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: 20150128 |