CN204704231U - A kind of expandable nail for convenience detach - Google Patents
A kind of expandable nail for convenience detach Download PDFInfo
- Publication number
- CN204704231U CN204704231U CN201520298126.1U CN201520298126U CN204704231U CN 204704231 U CN204704231 U CN 204704231U CN 201520298126 U CN201520298126 U CN 201520298126U CN 204704231 U CN204704231 U CN 204704231U
- Authority
- CN
- China
- Prior art keywords
- screw
- arranges
- expanded core
- inflation port
- 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
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 13
- 239000000463 material Substances 0.000 description 7
- 241001149930 Protura <class> Species 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 241000587161 Gomphocarpus Species 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
Abstract
The utility model discloses a kind of expandable nail for convenience detach, comprise screw and expansion sleeve, described expansion sleeve is arranged on outside described screw, described screw head arranges block, described screw top arranges circular expander hole, described inflation port inwall arranges antiskid thread, described inflation port both sides correspondence arranges slotted eye, inserting longitudinal section in described inflation port is trapezoidal expanded core, described expanded core cross section is square, the both sides that described expanded core contacts with described inflation port are arc and corresponding described antiskid thread arranges and holds out against screw thread, and described expanded core top arranges boss.Described expansion sleeve arranges the barb type screw thread that size increases gradually from bottom to top.The utility model increases the frictional force between screw and hole wall by expansion sleeve, prevent expandable nail from skidding off in hole, expanded core plays further stretching effect to screw, increase the frictional force between screw and hole wall, and just expandable nail can be removed by rotary expansion core, simple to operation, practicability is fine.
Description
Technical field
The utility model relates to technical field of fastening, is specifically related to a kind of expandable nail for convenience detach.
Background technique
The expansion sleeve that the swell fixture of current use generally has several notches by nut, conehead screw rod and afterbody forms, during use, by tightening nut, conehead screw rod is exited in expansion sleeve gradually, in the process that conehead screw rod exits gradually, make its dilatancy by the conehead squeezing bushing afterbody of screw rod tail, reach object fastening in the reserved boring on body of wall.The shortcoming of this swell fixture is single use, can not reuse, once be fastened on after on body of wall, is difficult to be taken out, affects the attractive in appearance of body of wall when not needing.
Although also there are some demountable swell fixtures, but this swell fixture passes through tightening nut, the conehead squeezing bushing afterbody of conehead screw rod tail is made to make its dilatancy, and reach fastening object, not only the helical pitch of screw thread is short, and the process that screw rod exits from sleeve pipe is slow, and in the process of nut screw rod very easily along with rotation, cause swell fixture to be installed to lose efficacy, damage sleeve pipe, sheet material or wall.
Model utility content
Problem to be solved in the utility model is to provide a kind of expandable nail for convenience detach, the frictional force between screw and hole wall is increased by expansion sleeve, prevent expandable nail from skidding off in hole, expanded core plays further stretching effect to screw, increase the frictional force between screw and hole wall, and just expandable nail can be removed by rotary expansion core, simple to operation, practicability is fine, and Applicable scope is wider.
A kind of expandable nail for convenience detach, comprise screw and expansion sleeve, described expansion sleeve is arranged on outside described screw, described screw head arranges block, described screw top arranges circular expander hole, described inflation port inwall arranges antiskid thread, described inflation port both sides correspondence arranges slotted eye, inserting longitudinal section in described inflation port is trapezoidal expanded core, described expanded core cross section is square, the both sides that described expanded core contacts with described inflation port are arc and corresponding described antiskid thread arranges and holds out against screw thread, and described expanded core top arranges boss.
Further, described boss is rectangular cylinder.
Further, described expansion sleeve arranges the barb type screw thread that size increases gradually from bottom to top.
Further, described expanded core and the described screw thread that holds out against adopt Iron And Steel Casting.
When carrying out fastening to object, first get out hole with perforating device, screw is pounded into, because the action-screw of expansion sleeve has good fastening effect to object, barb type screw thread increases from bottom to top gradually, being pounded by screw, fashionable upper end is stressed to increase gradually, the compression better effects if of expansion sleeve, screw is made more to be not easy to skid off from hole, when expanded core is in the inflation port inserting screw, further stretching effect is played to screw, because screw upper end is divided in order to two-part, made the sidewall of the further insertion hole of barb type screw thread by expanded core reduction when deformation slightly, fastening effect is remarkably good, and barb type thread size increases from bottom to top gradually, this design can make screw be suitable for the hole of different inner diameters, the scope of application is wider.
Described expanded core can be taken out from described slotted eye through rotating, the slotted eye size of inflation port both sides will accomplish that expanded core can be taken out from slotted eye after rotating, when needs expandable nail, expanded core is pounded in inflation port, because expanded core is frustoconic shape, just inflation port can be propped up in the middle of the process progressively entered, and then screw upper part is outwards strutted, now sheet material or wall produce the power of inwardly extruding to screw, but owing to holding out against the staggered of screw thread and antiskid thread, frictional force between inflation port and expanded core is larger, expanded core can not skid off because of the dynamics of extruding, serve the dynamics to outer support to screw, when needs take off screw, rotary expansion core, when the arc shaped surface of expanded core rotates the slotted eye position to inflation port, cannot play a supporting role to inflation port in the other two sides of expanded core, now zerofriction force degree between expanded core and inflation port, expanded core just can be taken out easily, re-use the instruments such as pliers just the screw of undirected outer support dynamics to be taken out, Use Limitation fruit is good, take off also more for convenience, just with popularization.
The block of screw upper end is convenient to place spacer for bolt when expandable nail heads into sheet material or body of wall, is used for protecting the surface of sheet material or body of wall intact.Boss adopts rectangular cylinder, needs one corresponding with it specifically turn on device, corresponding boss profile design boss is inserted in mechanism, handle is added in this mechanism, just can rotate boss thus drive expanded core to rotate and take out in inflation port, simply easy to operate, can fast screw be taken out in hole, realize the detachable function of swell fixture, more common expandable nail speed improves one times nearly.Expanded core and hold out against screw thread and play a supporting role, therefore needs enough flintinesses, adopts Iron And Steel Casting can increase its working life and using effect.
The utility model increases the frictional force between screw and hole wall by expansion sleeve, prevent expandable nail from skidding off in hole, expanded core plays further stretching effect to screw, increase the frictional force between screw and hole wall, and just expandable nail can be removed by rotary expansion core, simple to operation, practicability is fine, and Applicable scope is wider.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described:
Fig. 1 is the sectional drawing of the utility model expandable nail for convenience detach;
Fig. 2 is the plan view that the utility model inserts expanded core;
Fig. 3 is the sectional drawing that the utility model takes out expanded core;
Fig. 4 is the plan view that the utility model takes out expanded core;
Fig. 5 is the sectional drawing of the utility model expanded core;
Fig. 6 is the side view of the utility model expanded core;
Fig. 7 is the side view of the utility model screw.
Embodiment
As shown in Figures 1 to 7: the utility model provides a kind of expandable nail for convenience detach, comprise screw 1 and expansion sleeve 2, described expansion sleeve 2 is arranged on outside described screw 1, described screw 1 top arranges block 3, described screw 1 top arranges circular expander hole 4, described inflation port 4 inwall arranges antiskid thread 5, described inflation port 4 both sides correspondence arranges slotted eye 6, inserting longitudinal section in described inflation port 4 is trapezoidal expanded core 7, described expanded core 7 cross section is square, the both sides that described expanded core 7 contacts with described inflation port 4 are arc and corresponding described antiskid thread 5 arranges and holds out against screw thread 8, described expanded core 7 top arranges boss 9.Described boss 9 is rectangular cylinder.Described expansion sleeve 2 arranges the barb type screw thread 10 that size increases gradually from bottom to top.Described expanded core 7 and the described screw thread 8 that holds out against adopt Iron And Steel Casting.
When carrying out fastening to object, first get out hole with perforating device, screw 1 is pounded into, because the action-screw of expansion sleeve 21 pair of object has good fastening effect, barb type screw thread 10 increases from bottom to top gradually, being pounded by screw 1, fashionable upper end is stressed to increase gradually, the compression better effects if of expansion sleeve 2, screw 1 is made more to be not easy to skid off from hole, when expanded core 7 is in the inflation port 4 inserting screw 1, further stretching effect is played to screw 1, because screw 1 upper end is divided in order to two-part, made the sidewall of the further insertion hole of barb type screw thread 10 by expanded core 7 reduction when deformation slightly, fastening effect is remarkably good, and barb type screw thread 10 size increases from bottom to top gradually, this design can make screw 1 be suitable for the hole of different inner diameters, the scope of application is wider.
Described expanded core 7 can be taken out from described slotted eye 6 through rotating, slotted eye 6 size of inflation port 4 both sides will accomplish that expanded core 7 can be taken out from slotted eye 6 after rotating, when needs expandable nail, expanded core 7 is pounded in inflation port 4, because expanded core 7 is trapezoidal, just inflation port 4 can be propped up in the middle of the process progressively entered, and then screw 1 upper part is outwards strutted, now sheet material or wall produce the power of inwardly extruding to screw 1, but owing to holding out against the staggered of screw thread 8 and antiskid thread 5, frictional force between inflation port 4 and expanded core 7 is larger, expanded core 7 can not skid off because of the dynamics of extruding, serve the dynamics to outer support to screw 1, when needs take off screw 1, rotary expansion core 7, when the arc shaped surface of expanded core 7 rotates slotted eye 6 position to inflation port 4, cannot play a supporting role to inflation port 4 in the other two sides of expanded core 7, now zerofriction force degree between expanded core 7 and inflation port 4, expanded core 7 just can be taken out easily, re-use the instruments such as pliers just the screw 1 of undirected outer support dynamics to be taken out, Use Limitation fruit is good, take off also more for convenience, just with popularization.
The block 3 of screw 1 upper end is convenient to place spacer for bolt when expandable nail heads into sheet material or body of wall, is used for protecting the surface of sheet material or body of wall intact.Boss 9 adopts rectangular cylinder, needs one corresponding with it specifically turn on device, corresponding boss 9 profile design boss 9 is inserted in mechanism, handle is added in this mechanism, just can rotate boss 9 thus drive expanded core 7 to rotate and take out in inflation port 4, simply easy to operate, can fast screw 1 be taken out in hole, realize the detachable function of swell fixture, more common expandable nail speed improves one times nearly.Expanded core 7 and hold out against screw thread 8 and play a supporting role, therefore needs enough flintinesses, adopts Iron And Steel Casting can increase its working life and using effect.
Claims (4)
1. an expandable nail for convenience detach, comprise screw and expansion sleeve, described expansion sleeve is arranged on outside described screw, described screw head arranges block, described screw top arranges circular expander hole, it is characterized in that: described inflation port inwall arranges antiskid thread, described inflation port both sides correspondence arranges slotted eye, inserting longitudinal section in described inflation port is trapezoidal expanded core, described expanded core cross section is square, the both sides that described expanded core contacts with described inflation port are arc and corresponding described antiskid thread arranges and holds out against screw thread, and described expanded core top arranges boss.
2. expandable nail for convenience detach as claimed in claim 1, is characterized in that: described boss is rectangular cylinder.
3. expandable nail for convenience detach as claimed in claim 1, is characterized in that: described expansion sleeve arranges the barb type screw thread that size increases gradually from bottom to top.
4. expandable nail for convenience detach as claimed in claim 1, is characterized in that: described expanded core and the described screw thread that holds out against adopt Iron And Steel Casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520298126.1U CN204704231U (en) | 2015-05-11 | 2015-05-11 | A kind of expandable nail for convenience detach |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520298126.1U CN204704231U (en) | 2015-05-11 | 2015-05-11 | A kind of expandable nail for convenience detach |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204704231U true CN204704231U (en) | 2015-10-14 |
Family
ID=54283852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520298126.1U Expired - Fee Related CN204704231U (en) | 2015-05-11 | 2015-05-11 | A kind of expandable nail for convenience detach |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204704231U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980173A (en) * | 2018-09-28 | 2018-12-11 | 无锡安欣达科技有限公司 | High-temp and high-strength rivet |
| CN110360203A (en) * | 2019-06-17 | 2019-10-22 | 浙江凯耀照明股份有限公司 | A kind of convenient lamp mounting screw |
-
2015
- 2015-05-11 CN CN201520298126.1U patent/CN204704231U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980173A (en) * | 2018-09-28 | 2018-12-11 | 无锡安欣达科技有限公司 | High-temp and high-strength rivet |
| CN110360203A (en) * | 2019-06-17 | 2019-10-22 | 浙江凯耀照明股份有限公司 | A kind of convenient lamp mounting screw |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151014 Termination date: 20170511 |