CN204003875U - A kind of expansion fastened bolt - Google Patents
A kind of expansion fastened bolt Download PDFInfo
- Publication number
- CN204003875U CN204003875U CN201420512909.0U CN201420512909U CN204003875U CN 204003875 U CN204003875 U CN 204003875U CN 201420512909 U CN201420512909 U CN 201420512909U CN 204003875 U CN204003875 U CN 204003875U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- expansion
- bolt
- rod cylinder
- expansion sleeve
- 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 discloses a kind of expansion fastened bolt, comprise bolt head, also comprise the expansion sleeve of connecting bolt head, the screw rod cylinder of screw-thread fit in expansion sleeve; Described expansion sleeve comprises that this cylinder section is provided with internal thread near the cylinder section of bolt head one end, and the insertion end of screw rod cylinder is provided with the outside thread with screw-internal thread fit; Described expansion sleeve also comprises the bulge away from bolt head, and this bulge is with outside thread, and the end of screw rod cylinder is provided with the wide diameter portion that drives bulge distending.The utility model is simple in structure, easy to use, comprise expansion sleeve and the screw-thread fit screw rod cylinder in expansion sleeve, utilize screw rod cylinder to insert and make expansion sleeve distending, be close to the through hole in part, and realize the fixing of part by screw thread, screw rod cylinder end face or lower than part surface.
Description
Technical field
The utility model belongs to technical field of fastening, relates in particular to a kind of expansion fastened bolt.
Background technique
Bolt, by head and screw rod (with an externally threaded cylindrical body) class fastening piece dimerous, need coordinate with nut, for being fastenedly connected two parts with through hole.Connecting format claims bolt to connect, and as nut is screwed off from bolt, can make again these two parts separately, is to belong to removably connect therefore bolt connects.
Bolt is manufactured field in daily life and industrial production, the fastening piece that is absolutely necessary, and bolt is also referred to as the rice of industry, and the utilization of visible bolt is extensively.The utilization scope of bolt has: electronic product, engineering goods, digital product, power equipment, dynamo-electric engineering goods.Boats and ships, vehicle, hydraulic engineering, even also uses bolt in chemical experiment.Bolt uses very extensive, the special precision bolt of using above as digital product; The Micro-bolt that DVD, photographic camera, glasses, clock and watch, electronics etc. use; Bolt as one of TV, electric product, musical instrument, furniture etc.; Use large-sized bolt and nut as for engineering, building, bridge; Traffic tool, aircraft, electric car, automobile etc. are large stove bolt and use.
EXPANSION ANCHOR BOLTS is generally made up of component such as screw rod cylinder, expansion-head, expansion sleeve, nut, packing ring and pads, and existing expansion-head is generally a Rotary-table, and one end of expansion sleeve cartridge type has the straight sleeve of several vertical bar seams.Turn nut or screw rod cylinder, thereby expansion-head makes expansion sleeve distending make that EXPANSION ANCHOR BOLTS is swollen gets into the cave really.The patent documentation that is CN101463854A as patent publication No. discloses a kind of EXPANSION ANCHOR BOLTS, comprise screw rod cylinder, expansion-head, expansion sleeve, packing ring and pad, expansion sleeve, pad, packing ring are sleeved on successively by front and back on the outer wall of screw rod cylinder, and the rear end of screw rod cylinder is provided with tightening nut, expansion-head is provided with groove, one end of expansion sleeve is provided with inside reducing, and this reducing can be moved at the end that maybe can detain or hook groove on groove.
In use, bolt is through after part for existing bolt, and head and nut lay respectively at the two ends of part, for making the flush of nut and part, nut need to be embedded at inside parts, therefore will, at the through hole internal recessing of part, promote difficulty of processing.
Model utility content
For solving the problem existing in prior art, the utility model provides a kind of expansion fastened bolt simple in structure and easy to use, comprise expansion sleeve and the screw-thread fit screw rod cylinder in expansion sleeve, utilize screw rod cylinder to insert and make expansion sleeve distending, be close to the through hole in part, and realize the fixing of part by screw thread, screw rod cylinder end face or lower than part surface.
A kind of expansion fastened bolt, comprises bolt head, also comprises the expansion sleeve of connecting bolt head, the screw rod cylinder of screw-thread fit in expansion sleeve;
Described expansion sleeve comprises that this cylinder section is provided with internal thread near the cylinder section of bolt head one end, and the insertion end of screw rod cylinder is provided with the outside thread with screw-internal thread fit;
Described expansion sleeve also comprises the bulge away from bolt head, and this bulge is with outside thread, and the end of screw rod cylinder is provided with the wide diameter portion that drives bulge distending.
Expansion fastened bolt in the utility model comprises expansion sleeve and the screw-thread fit screw rod cylinder in expansion sleeve, expansion sleeve comprises the cylinder section of close bolt head one end and the bulge away from bolt head, bulge is with coordinating outside thread with part screw, being used for turning expansion sleeve enters in screw, again screw rod cylinder is inserted in expansion sleeve, wide diameter portion extrusion expansion portion distending, bolt and part interfix, realize the fastening of part, and screw rod cylinder end face or lower than part surface, is convenient to install miscellaneous part on part.
As preferably, described bulge has smooth inwall.
Bulge is the wide diameter portion extrusion-deformation by screw rod cylinder, and smooth inwall is set, and is beneficial to screw rod cylinder and is screwed in expansion sleeve.
As preferably, described cylinder section is also provided with outside thread.
For expansion sleeve is coordinated closely with the screw on part, outside thread can also be set in cylinder section, there is better part fixed effect.
As preferably, described bulge has spaced apart 2～6 intumescent sheets.
Bulge is actually the intumescent sheet that can outwards open, after intumescent sheet is squeezed, coordinate with part through hole tightr, make bolt connect more firm.
As preferably, the quantity of described intumescent sheet is 3 or 4.
Generally, the quantity of intumescent sheet is 3 or 4, also can be according to concrete service condition increase and decrease, to keep better connecting effect.
As preferably, the diameter of described wide diameter portion is increased gradually by the middle part terminad of screw rod cylinder.
As preferably, the maximum diameter of described wide diameter portion should be less than 1.1 times of screw rod column diameter.
Screw rod cylinder is screwed in process, the wide diameter portion that diameter increases gradually, and slowly extrusion expansion portion opens, and is beneficial to entering of screw rod cylinder, and the distending amplitude that should control bulge is less than 10%, avoids intumescent sheet cracking.
As preferably, the end section of described screw rod cylinder is provided with cross recess, straight groove or interior hex slot.
Due to the end section of screw rod cylinder should lower than or flush part surface, it is plane that distal end faces should be set as far as possible, cross recess, straight groove or interior hex slot are opened on end face, for turning screw rod cylinder, drive screw cylinder enters expansion sleeve inside.
The utility model is simple in structure, easy to use, comprise expansion sleeve and the screw-thread fit screw rod cylinder in expansion sleeve, utilize screw rod cylinder to insert and make expansion sleeve distending, be close to the through hole in part, and realize the fixing of part by screw thread, screw rod cylinder end face or lower than part surface.
Brief description of the drawings
Fig. 1 is the structural representation of expansion fastened bolt.
Embodiment
Below in conjunction with accompanying drawing, expansion fastened bolt of the present utility model is described in further detail.
As shown in Figure 1, a kind of expansion fastened bolt, comprises bolt head 1, also comprises the expansion sleeve 2 of connecting bolt head 1, the screw rod cylinder 3 of screw-thread fit in expansion sleeve 2.Expansion sleeve 2 comprises that this cylinder section 4 is provided with internal thread near the cylinder section 4 of bolt head 1 one end, and the insertion end of screw rod cylinder 3 is provided with the outside thread 7 with screw-internal thread fit; Expansion sleeve 2 also comprises the bulge 5 away from bolt head 1, and this bulge is with outside thread, and the end of screw rod cylinder 3 is provided with the wide diameter portion 8 that drives bulge 5 distendings.The end section of screw rod cylinder 3 is provided with cross recess, straight groove or interior hex slot, and for turning screw rod cylinder 3, drive screw cylinder 3 enters in expansion sleeve 2.
The outside thread of bulge 5 coordinates with part screw, being used for turning expansion sleeve 2 enters in screw, screw rod cylinder 3 inserts in expansion sleeve 2, wide diameter portion 8 extrusion expansion portion 5 distendings, bolt and part interfix, realize the fastening of part, and screw rod cylinder 3 end face or lower than part surface, be convenient to install miscellaneous part on part.
Bulge 5 has smooth inwall, is beneficial to screw rod cylinder 3 and is screwed in expansion sleeve 2.Cylinder section 4 is also provided with outside thread, coordinates with the screw of part, has better fixed effect.
In the present embodiment, bulge 5 has spaced apart 2～6 intumescent sheets 6, after the intumescent sheet 6 that can outwards open is squeezed, coordinate with part screw tightr, make bolt connect more firm, under normal circumstances, the quantity of intumescent sheet 6 is 3 or 4.
The diameter of wide diameter portion 8 is increased gradually by the middle part terminad of screw rod cylinder 3, and the maximum diameter of wide diameter portion 8 should be less than 1.1 times of screw rod cylinder 3 diameters, the wide diameter portion 8 that diameter increases gradually, slowly extrusion expansion portion 5 distendings, be beneficial to entering of screw rod cylinder 3, the distending amplitude of controlling bulge 5 is less than 10%, avoids intumescent sheet 6 to ftracture.
The foregoing is only better implementation example of the present utility model, be not limited to the utility model, all within the utility model spirit and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. an expansion fastened bolt, comprises bolt head, it is characterized in that, also comprises the expansion sleeve of connecting bolt head, the screw rod cylinder of screw-thread fit in expansion sleeve;
Described expansion sleeve comprises that this cylinder section is provided with internal thread near the cylinder section of bolt head one end, and the insertion end of screw rod cylinder is provided with the outside thread with screw-internal thread fit;
Described expansion sleeve also comprises the bulge away from bolt head, and this bulge is with outside thread, and the end of screw rod cylinder is provided with the wide diameter portion that drives bulge distending.
2. expansion fastened bolt as claimed in claim 1, is characterized in that, described bulge has smooth inwall.
3. expansion fastened bolt as claimed in claim 1, is characterized in that, described cylinder section is also provided with outside thread.
4. expansion fastened bolt as claimed in claim 1, is characterized in that, described bulge has spaced apart 2～6 intumescent sheets.
5. expansion fastened bolt as claimed in claim 4, is characterized in that, the quantity of described intumescent sheet is 3 or 4.
6. expansion fastened bolt as claimed in claim 1, is characterized in that, the diameter of described wide diameter portion is increased gradually by the middle part terminad of screw rod cylinder.
7. expansion fastened bolt as claimed in claim 6, is characterized in that, the maximum diameter of described wide diameter portion should be less than 1.1 times of screw rod column diameter.
8. expansion fastened bolt as claimed in claim 1, is characterized in that, the end section of described screw rod cylinder is provided with cross recess, straight groove or interior hex slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420512909.0U CN204003875U (en) | 2014-09-05 | 2014-09-05 | A kind of expansion fastened bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420512909.0U CN204003875U (en) | 2014-09-05 | 2014-09-05 | A kind of expansion fastened bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003875U true CN204003875U (en) | 2014-12-10 |
Family
ID=52043882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420512909.0U Expired - Fee Related CN204003875U (en) | 2014-09-05 | 2014-09-05 | A kind of expansion fastened bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204003875U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105926877A (en) * | 2016-06-12 | 2016-09-07 | 中冶天工集团有限公司 | Method for reinforcing plastering steel wire meshes for interior walls |
| CN106299591A (en) * | 2016-10-17 | 2017-01-04 | 南京迈途迈智能科技有限公司 | Based on intelligent transportation communication antenna fixed mechanism |
| CN107014443A (en) * | 2017-05-25 | 2017-08-04 | 深圳中研塑力科技有限公司 | Suitable for the inner insert stress strain gauge of structural member |
| CN109015039A (en) * | 2018-10-20 | 2018-12-18 | 贵州航铄工业股份有限公司 | A kind of thin-walled parts processing bit combination fixture with threaded hole |
-
2014
- 2014-09-05 CN CN201420512909.0U patent/CN204003875U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105926877A (en) * | 2016-06-12 | 2016-09-07 | 中冶天工集团有限公司 | Method for reinforcing plastering steel wire meshes for interior walls |
| CN105926877B (en) * | 2016-06-12 | 2017-12-29 | 中冶天工集团有限公司 | The reinforcement means of plastering on inner walls steel fabric sheet |
| CN106299591A (en) * | 2016-10-17 | 2017-01-04 | 南京迈途迈智能科技有限公司 | Based on intelligent transportation communication antenna fixed mechanism |
| CN107014443A (en) * | 2017-05-25 | 2017-08-04 | 深圳中研塑力科技有限公司 | Suitable for the inner insert stress strain gauge of structural member |
| CN109015039A (en) * | 2018-10-20 | 2018-12-18 | 贵州航铄工业股份有限公司 | A kind of thin-walled parts processing bit combination fixture with threaded hole |
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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: 20141210 Termination date: 20170905 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |