CN203516382U - Guiding and positioning bolt - Google Patents
Guiding and positioning bolt Download PDFInfo
- Publication number
- CN203516382U CN203516382U CN201320607209.5U CN201320607209U CN203516382U CN 203516382 U CN203516382 U CN 203516382U CN 201320607209 U CN201320607209 U CN 201320607209U CN 203516382 U CN203516382 U CN 203516382U
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- CN
- China
- Prior art keywords
- screw rod
- bolt
- guide rod
- rod
- 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 - Lifetime
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Abstract
The utility model relates to a bolt, in particular to a guiding and positioning bolt. The guiding and positioning bolt comprises a nut and a screw rod, a guiding rod is arranged between the nut and the screw rod, the guiding rod and the screw rod are coaxially arranged, and the diameter of the fracture face of the guiding rod gradually decreases from the end close to the nut to the end close to the screw rod. The guiding and positioning bolt has the advantages that a via hole can be guided effectively, thread damage in the assembly process is avoided, assembly reliability is guaranteed, the service life of parts is prolonged, abnormal noise is prevented from occurring at the via hole, and fracture caused by stress concentration is avoided.
Description
Technical field
The utility model relates to a kind of bolt, especially relates to a kind of bolt of guide-localization.
Background technique
In auto parts and components, part has longer installation via hole, if select screw rod to assemble with respect to the thinner general bolt of assembling via size for this part, often there will be looseness phenomenon after assembling; If the general bolt of selecting screw size to approach assembling via size assembles, in assembly process, often can because of crossing orientation problem, cause occurring that the difficult screw thread of assembling is impaired.If by the whole overstriking of bolt shank or by the local overstriking of bolt shank, the yardstick of bolt shank overstriking is difficult for holding, cross and slightly easily cause assembling difficulty, meticulously do not have a reliable fixed effect, bolt shank and threaded connection place are prone to that stress is concentrated and the phenomenon that causes rupturing simultaneously.
As Chinese patent notification number is: CN202560755U, in a kind of bolt of bulletin on November 28th, 2012, comprise bolt head and screw rod, it is characterized in that: on the end face of bolt head away from screw rod, be provided with polygonal groove, in described groove, be provided with the filling matching with groove fast.The screw rod of the bolt in this patent is cylindrical body, cannot lead to via hole, cannot guarantee that screw rod coaxially, easily causes thread abrasion with tapped hole and via hole all the time.
Model utility content
The utility model is mainly for the problems referred to above, provides a kind of and can be effectively via hole is led, avoided that screw thread in assembly process is impaired, the reliability that guaranteed assembling, improves part working life, avoids via hole place to produce abnormal sound, avoids occurring that stress concentrates the bolt of the guide-localization that causes fracture.
The purpose of this utility model is mainly achieved by following proposal: a kind of bolt of guide-localization, comprise nut and screw rod, between described nut and screw rod, be provided with guide rod, described guide rod and screw coaxial setting, the cross section diameter of described guide rod is successively decreased towards the one end near screw rod by the one end near nut.In the time of in screw rod penetrates via hole screw-in tapped hole, the cross section diameter of guide rod is successively decreased towards the one end near screw rod by the one end near nut, be that guide rod is taper, conventionally the diameter of via hole is greater than the diameter of tapped hole, the guide rod of taper can lead to via hole, guarantee that threaded stem and tapped hole coaxially screw in, avoid screw rod to tilt to cause the wearing and tearing of screw thread, tapped hole and via hole, raising part working life.The guide rod of taper can avoid stress to concentrate effectively, prevents bolt fracture.When bolt screws in tapped hole completely, guide rod can be fitted with via edges, avoids bolt to rock in via hole, avoids producing abnormal sound, reduces noise.
As preferably, between described guide rod and screw rod, be provided with circular groove, described circular groove is V-shaped.Between guide rod and screw rod, be provided with circular groove, circular groove is V-shaped, avoids guide rod and screw rod joint to occur that stress is concentrated, strengthens the structural strength of guide rod and screw rod joint.
As preferably, described guide rod near the maximum diameter of nut one end than the large 2mm-3mm of the diameter of screw rod.Conventionally the diameter of via hole is than the large 2mm of tapped hole diameter, arrange guide rod near the maximum diameter of nut one end than the large 2mm-3mm of the diameter of screw rod, guarantee that guide rod can lead to via hole.
As preferably, the outer surface of described guide rod is provided with several axial oil grooves, and oil groove is evenly around the axis setting of guide rod.The outer surface of guide rod is provided with several axial oil grooves, and oil groove evenly, around the axis setting of guide rod, avoids bolt to get rusty, can inject lubricant oil by oil groove, lubricant oil can flow in screw rod along oil groove, without Bolt dismantling is got off, is convenient to bolt to safeguard.
As preferably, described oil groove is 2-4.Avoid reducing the structural strength of guide rod, oil groove is set to 2-4.
Therefore, the bolt of guide-localization of the present utility model possesses following advantage: 1, in the time of in screw rod penetrates via hole screw-in tapped hole, the cross section diameter of guide rod is successively decreased towards the one end near screw rod by the one end near nut, be that guide rod is taper, conventionally the diameter of via hole is greater than the diameter of tapped hole, the guide rod of taper can lead to via hole, guarantee that threaded stem and tapped hole coaxially screw in, avoid screw rod to tilt to cause screw thread, the wearing and tearing of tapped hole and via hole, improve part working life, the guide rod of taper can avoid stress to concentrate effectively, prevent bolt fracture, when bolt screws in tapped hole completely, guide rod can be fitted with via edges, avoid bolt to rock in via hole, avoid producing abnormal sound, reduce noise, 2, between guide rod and screw rod, be provided with circular groove, circular groove is V-shaped, avoids guide rod and screw rod joint to occur that stress is concentrated, strengthens the structural strength of guide rod and screw rod joint, 3, the outer surface of guide rod is provided with several axial oil grooves, and oil groove evenly, around the axis setting of guide rod, avoids bolt to get rusty, can inject lubricant oil by oil groove, lubricant oil can flow in screw rod along oil groove, without Bolt dismantling is got off, is convenient to bolt to safeguard.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of structural representation of the utility model in embodiment 1;
Accompanying drawing 2 is a kind of erection drawings of the present utility model;
Accompanying drawing 3 is the utility model a kind of structural representations in embodiment 2.
Illustrate: 1-nut, 2-screw rod, 3-guide rod, 4-circular groove, 5-oil groove.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: as shown in Figure 1, 2, a kind of bolt of guide-localization, comprises nut 1 and screw rod 2, between nut 1 and screw rod 2, has guide rod 3, and nut 1, guide rod 3 and screw rod 2 are one-body molded.Guide rod 3 coaxially arranges with screw rod 2, and the cross section diameter of guide rod 3 is successively decreased towards the one end near screw rod by the one end near nut.Between guide rod 3 and screw rod 2, have circular groove 4, circular groove 4 is V-shaped.Guide rod near the maximum diameter of nut one end than the large 2mm of the diameter of screw rod.
In the time of in screw rod penetrates via hole screw-in tapped hole, the cross section diameter of guide rod is successively decreased towards the one end near screw rod by the one end near nut, be that guide rod is taper, conventionally the diameter of via hole is greater than the diameter of tapped hole, the guide rod of taper can lead to via hole, guarantee that threaded stem and tapped hole coaxially screw in, avoid screw rod to tilt to cause the wearing and tearing of screw thread, tapped hole and via hole, raising part working life.The guide rod of taper can avoid stress to concentrate effectively, prevents bolt fracture.When bolt screws in tapped hole completely, guide rod can be fitted with via edges, avoids bolt to rock in via hole, avoids producing abnormal sound, reduces noise.Between guide rod and screw rod, be provided with circular groove, circular groove is V-shaped, avoids guide rod and screw rod joint to occur that stress is concentrated, strengthens the structural strength of guide rod and screw rod joint.Conventionally the diameter of via hole is than the large 2mm of tapped hole diameter, arrange guide rod near the maximum diameter of nut one end than the large 2mm of the diameter of screw rod, guarantee that guide rod can lead to via hole.
Embodiment 2: the present embodiment and embodiment's 1 structure is basic identical, and difference is, as shown in Figure 3, the outer surface of guide rod 3 is provided with 4 axial oil grooves 5, and oil groove 5 is evenly around the axis setting of guide rod 3.Avoid bolt to get rusty, can inject lubricant oil by oil groove, lubricant oil can flow in screw rod along oil groove, without Bolt dismantling is got off, is convenient to bolt to safeguard.Avoid reducing the structural strength of guide rod, oil groove is set to 4.
Should be understood that this embodiment is only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (5)
1. the bolt of a guide-localization, comprise nut and screw rod, it is characterized in that, between described nut and screw rod, be provided with guide rod, described guide rod and screw coaxial setting, the cross section diameter of described guide rod is successively decreased towards the one end near screw rod by the one end near nut.
2. the bolt of guide-localization according to claim 1, is characterized in that, between described guide rod and screw rod, is provided with circular groove, and described circular groove is V-shaped.
3. the bolt of guide-localization according to claim 1 and 2, is characterized in that, described guide rod near the maximum diameter of nut one end than the large 2mm-3mm of the diameter of screw rod.
4. the bolt of guide-localization according to claim 1 and 2, is characterized in that, the outer surface of described guide rod is provided with several axial oil grooves, and oil groove is evenly around the axis setting of guide rod.
5. the bolt of guide-localization according to claim 4, is characterized in that, described oil groove is 2-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607209.5U CN203516382U (en) | 2013-09-27 | 2013-09-27 | Guiding and positioning bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607209.5U CN203516382U (en) | 2013-09-27 | 2013-09-27 | Guiding and positioning bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516382U true CN203516382U (en) | 2014-04-02 |
Family
ID=50375318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320607209.5U Expired - Lifetime CN203516382U (en) | 2013-09-27 | 2013-09-27 | Guiding and positioning bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516382U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640903A (en) * | 2016-12-23 | 2017-05-10 | 北京金风科创风电设备有限公司 | Centering fastener, manufacturing method and using method thereof and wind generating set |
| CN108953351A (en) * | 2018-09-15 | 2018-12-07 | 杨富云 | A kind of checknut fastener |
-
2013
- 2013-09-27 CN CN201320607209.5U patent/CN203516382U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640903A (en) * | 2016-12-23 | 2017-05-10 | 北京金风科创风电设备有限公司 | Centering fastener, manufacturing method and using method thereof and wind generating set |
| CN106640903B (en) * | 2016-12-23 | 2019-06-21 | 北京金风科创风电设备有限公司 | Centering fastener, manufacturing method and using method thereof and wind generating set |
| US11143230B2 (en) | 2016-12-23 | 2021-10-12 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Centering fastener, manufacturing method and using method thereof and wind turbine |
| CN108953351A (en) * | 2018-09-15 | 2018-12-07 | 杨富云 | A kind of checknut fastener |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200617 Address after: 310051 Jiangling Road, Hangzhou, Zhejiang, No. 1760, No. Co-patentee after: Chengdu Geely Automobile Manufacturing Co.,Ltd. Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Address before: 310051 Jiangling Road, Hangzhou, Zhejiang, No. 1760, No. Co-patentee before: CHENGDU GAOYUAN AUTOMOBILE INDUSTRY Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |