CN201092997Y - Check bolt - Google Patents
Check bolt Download PDFInfo
- Publication number
- CN201092997Y CN201092997Y CNU2007200291727U CN200720029172U CN201092997Y CN 201092997 Y CN201092997 Y CN 201092997Y CN U2007200291727 U CNU2007200291727 U CN U2007200291727U CN 200720029172 U CN200720029172 U CN 200720029172U CN 201092997 Y CN201092997 Y CN 201092997Y
- Authority
- CN
- China
- Prior art keywords
- screw thread
- thread
- screw
- screw rod
- standard
- 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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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model relates to a check bolt, which belongs to a connecting component. The utility model comprises a screw cap and a screw rod, which is characterized in that screw thread on the front section of the screw rod is standard screw thread, external diameter of screw thread on the rear section of the screw rod is consist with the external diameter of standard screw thread on the front section, pitch diameter is larger than pitch diameter of the standard screw thread on the front section, and the deviation value between pitch diameter of screw thread on the rear section and pitch diameter of the standard screw thread on the front section is larger than the deviation value between pitch diameter of screw thread on the rear section and pitch diameter of internal screw thread which is matched with the screw rod. The interference fit between screw thread on the rear section of the screw rod and the internal screw thread is realized after the screw is screwed in, therefore, working pretightening force is generated, and anti-loose function is achieved. The check bolt has reliable anti-loose effect, convenient insertion, simple structure and convenient use.
Description
Technical field
The utility model relates to a kind of mechanical connection bolt, especially chek bolt.
Background technique
Bolted anti-loose method has many, commonly used have to add use packing ring, spring washer, also have a lot of methods in other prior art, it is locking mainly to be divided into friction, machinery is locking, destructive locking, also useful bonding fastening method, but have as the expense of binder etc. than higher, the complex structure that has, what have is designing, make and detect upward cumbersome, the meeting that has gives to use increases inconvenience, as the disclosed technological scheme of China Patent No. ZL96213577.1, this scheme is by changing the Bottom of Thread of bolt, thereby make at the bottom of the tooth of the crest of internal thread and bolt extruding mutually and increase frictional force and reach locking effect, but this structure can be very inconvenient when bolt screws in.
The model utility content
In order to overcome the shortcoming that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of chek bolt, and its anti-loosing effect is reliable and screw-in is convenient, simple in structure, easy to use.
In order to address the above problem, the utility model by the following technical solutions: a kind of chek bolt, form by nut and screw rod two-part, it is characterized in that: the screw thread of described screw rod leading portion part is a standard thread; The major diameter of thread of screw rod back segment part is consistent with the standard thread external diameter of leading portion part, and middle footpath is bigger than footpath in the standard thread of leading portion part; And directly deviation is greater than the middle footpath deviate of the internal thread that cooperates with screw rod in the standard thread of the effective diameter of thread of back segment part and leading portion part.
Make behind the screw-in, realize interference fit between the screw thread of screw rod back segment part and the internal thread, thereby the work of generation pretightening force reaches locking effect.
The beneficial effects of the utility model are: it is simple in structure, is convenient to make; Because screw rod leading portion screw thread is a standard thread, screw in during convenient the use, easy to use; And be interference fit between back segment screw thread and the internal thread, its pretightening force on supporting plane has played locking effect, and anti-loosing effect is reliable.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 is the utility model embodiment's a thread profile structure for amplifying schematic representation,
Fig. 3 is the structural representation after the internal thread of the utility model embodiment and standard thread screws pretension.
Among the figure: 1 nut, 2 screw rods, 21 standard threads, 22 add the screw thread in big-and-middle footpath, 3 standard female.
Embodiment
As shown in Figure 1 and Figure 2,
This chek bolt is made up of nut 1 and screw rod 2 two-part, and the screw thread of screw rod 2 leading portions part is a standard thread 21, and the thread profile of screw rod back segment part is the screw thread 22 that adds big-and-middle footpath.The major diameter of thread of back segment part is consistent with the standard thread external diameter of leading portion part.Directly deviation is greater than the middle footpath deviate of the standard female 3 that cooperates with screw rod in the standard thread of the effective diameter of thread of back segment part and leading portion part.
During work, the screw thread of screw rod 2 leading portions part is a standard thread 21, so screw in internal thread 3 easily.As guiding, continue firmly to screw in, under the effect of power, it is interference fit that the screw thread 22 that the screw thread of screw rod back segment part promptly adds big-and-middle footpath screws between back and the standard female 3, as shown in Figure 3, its pretightening force that produces on supporting plane has played locking effect.
Claims (1)
1. a chek bolt is made up of nut and screw rod two-part, it is characterized in that: the screw thread of described screw rod leading portion part is a standard thread; The major diameter of thread of screw rod back segment part is consistent with the standard thread external diameter of leading portion part, and middle footpath is bigger than footpath in the standard thread of leading portion part; And directly deviation is greater than the middle footpath deviate of the internal thread that cooperates with screw rod in the standard thread of the effective diameter of thread of back segment part and leading portion part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200291727U CN201092997Y (en) | 2007-10-22 | 2007-10-22 | Check bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200291727U CN201092997Y (en) | 2007-10-22 | 2007-10-22 | Check bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201092997Y true CN201092997Y (en) | 2008-07-30 |
Family
ID=39900963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200291727U Expired - Fee Related CN201092997Y (en) | 2007-10-22 | 2007-10-22 | Check bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201092997Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439557A (en) * | 2014-10-30 | 2015-03-25 | 上海电气集团上海电机厂有限公司 | Bearing bolt thread fit control method |
| CN105485139A (en) * | 2016-01-15 | 2016-04-13 | 瑞安市威孚标准件有限公司 | Bolt with self-locking function |
| CN105864261A (en) * | 2016-05-25 | 2016-08-17 | 上海奥达科股份有限公司 | Threaded connecting pair and bolt thereof |
| CN106050861A (en) * | 2015-04-07 | 2016-10-26 | 大光金属株式会社 | Anti-releasing thread structure and its forming tool |
| CN106438657A (en) * | 2016-12-07 | 2017-02-22 | 石文祥 | Thread pitch interference fit thread, threaded connector and corrected thread machining tool |
| CN106541250A (en) * | 2015-09-18 | 2017-03-29 | 洪国珍 | Anti-loose bolt manufacture method and its make bolt element |
-
2007
- 2007-10-22 CN CNU2007200291727U patent/CN201092997Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439557A (en) * | 2014-10-30 | 2015-03-25 | 上海电气集团上海电机厂有限公司 | Bearing bolt thread fit control method |
| CN106050861A (en) * | 2015-04-07 | 2016-10-26 | 大光金属株式会社 | Anti-releasing thread structure and its forming tool |
| CN106541250A (en) * | 2015-09-18 | 2017-03-29 | 洪国珍 | Anti-loose bolt manufacture method and its make bolt element |
| CN105485139A (en) * | 2016-01-15 | 2016-04-13 | 瑞安市威孚标准件有限公司 | Bolt with self-locking function |
| CN105864261A (en) * | 2016-05-25 | 2016-08-17 | 上海奥达科股份有限公司 | Threaded connecting pair and bolt thereof |
| CN106438657A (en) * | 2016-12-07 | 2017-02-22 | 石文祥 | Thread pitch interference fit thread, threaded connector and corrected thread machining tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |