CN206555242U - Rotary-preventing expansion bolt - Google Patents
Rotary-preventing expansion bolt Download PDFInfo
- Publication number
- CN206555242U CN206555242U CN201720050257.7U CN201720050257U CN206555242U CN 206555242 U CN206555242 U CN 206555242U CN 201720050257 U CN201720050257 U CN 201720050257U CN 206555242 U CN206555242 U CN 206555242U
- Authority
- CN
- China
- Prior art keywords
- groove
- expansion tube
- bull stick
- bolt
- nose cone
- 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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Abstract
The utility model discloses a kind of rotary-preventing expansion bolt, including screw rod and the nose cone with screw rod one, there are the nut coordinated with screw flight and the expansion tube being socketed on screw rod, it is characterised in that：Nose cone one end is closed in the expansion tube upper outer surface and sets fluted, anti-bull stick is hinged with the bottom portion of groove, spring is provided between groove and anti-bull stick, raised line is provided with the nose cone, and the raised line height is identical with expansion tube thickness；By setting groove on expansion tube and anti-bull stick and spring being installed on groove, after wall is squeezed into bolt, due to the dilating effect of spring, anti- bull stick coordinates with wall hole prevents expansion tube from rotating, if bolt is with rotation, expansion tube open end is contacted with the raised line on nose cone, prevents bolt from rotating.Therefore, it is possible to effectively prevent bolt from following nut to be rotated when fastening.This is simple in construction, practical.
Description
Technical field
The utility model is related to a kind of fastener, and in particular to it is a kind of prevent install when screw rod with nut rotate it is swollen
Swollen bolt.
Background technology
Conventional expanded bolt is constituted by screw rod and with nose cone, expansion tube, the nut of bolt one, screw rod, expansion tube
Front portion be provided with some axially extending expansion otch.During installation, first drill, by expansion bolt insertion drilling, turn nut,
Outwards expand drawing expansion tube using conical termination, expansion tube and wall is produced frictional force, conical termination again with expansion
Pipe produces friction, and the final frictional force using transmission installs fixed expansion bolt.
Conventional expanded bolt arrangement is simple, but outwards drawing degree is not enough, and before frictional force is not big enough, screw rod can not be consolidated
It is fixed, nut can be followed to rotate in the same direction, cause nut quickly to fix the object of needs anchoring, cause work
Inefficiency.There is the number of patent application to be：201610262648.5, it is entitled：Self-positioning rotary-preventing expansion bolt.The structure can
Solve the problems, such as to prevent bolt with nut rotation, but sometimes expansion tube also can with rotation, while the structure due to at bolt
There is the characteristics of rotation stop effect is poor on coaxial, need further improved possibility.
Utility model content
In view of the presence of problem above, the utility model provides a kind of rotary-preventing expansion bolt, with simple in construction and energy
The characteristics of being rotated when effectively preventing bolt with clamp nut.
A kind of rotary-preventing expansion bolt, including screw rod and the nose cone with screw rod one, also have and coordinate with screw flight
Nut and the expansion tube that is socketed on screw rod, it is characterised in that：Nose cone one end is closed in the expansion tube upper outer surface
Set fluted, be hinged with anti-bull stick in the bottom portion of groove, spring is provided between groove and anti-bull stick, in the circular cone
Raised line is provided with head, the raised line height is identical with expansion tube thickness.
Further：The groove be symmetricly set on expansion tube outer surface on, the spring be fixedly installed on anti-bull stick with it is recessed
On groove.
Further：The groove is annular groove, and three anti-bull sticks are evenly arranged with the annular groove.
Further：It is provided with sawtooth on the movable end of the anti-bull stick, anti-bull stick is curved with fit depressions and anti-
Bull stick outer surface is flushed with expansion tube outer surface.
Beneficial effect
The beneficial effects of the utility model are：By groove is set on expansion tube and install on groove anti-bull stick and
Spring, after wall is squeezed into bolt, due to the dilating effect of spring, anti-bull stick coordinates with wall hole prevents expansion tube from turning
Dynamic, if bolt is with rotation, expansion tube open end is contacted with the raised line on nose cone, prevents bolt from rotating.Therefore, it is possible to
Effectively prevent bolt from following nut to be rotated when fastening.This is simple in construction, practical.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model expansion bolt
Fig. 2 is the structural representation that anti-bull stick amplification is set on expansion tube
Embodiment
As a kind of embodiment of the present utility model, as shown in Figure 1, 2, a kind of rotary-preventing expansion bolt, including screw rod 1
And the nose cone 6 with screw rod one, there are the nut 2 coordinated with screw flight and the expansion tube 4 being socketed on screw rod, spiral shell
Packing ring 3 is additionally provided between female and expansion tube, is being characterized in that：The one end of nose cone 6 is closed in the expansion tube upper outer surface
Fluted 9 are set, anti-bull stick 7 is hinged with the bottom portion of groove, spring 8 is provided between groove and anti-bull stick, described
Raised line 5 is provided with nose cone, the raised line height is identical with expansion tube thickness.Expansion tube in this structure is than general expansion
Pipe wants more abundant, while the groove set is also smaller, anti-bull stick can be hinged on groove, anti-bull stick uses steel nail material
Matter, with certain intensity, can sustain revolving force when in use, while raised line is set on nose cone, raised line
Bar number is identical with the opening 10 on expansion tube.And anti-bull stick and raised line are arranged on the vertical direction of bolt axle by this structure
On, moment of torsion is effectively increased, it is significantly more efficient to add the resistance for preventing that it from rotating.By on expansion tube set groove and
Anti- bull stick and spring are installed, after wall is squeezed into bolt, due to the dilating effect of spring, anti-bull stick and wall on groove
Wall hole, which coordinates, prevents expansion tube from rotating, if bolt is with rotation, expansion tube open end is contacted with the raised line on nose cone, resistance
Only bolt is rotated, therefore, it is possible to effectively prevent bolt from following nut to be rotated when fastening.This is simple in construction, practical.
In the present embodiment：The groove is symmetricly set on expansion tube outer surface, and the spring is fixedly installed on anti-bull stick
With on groove.By setting symmetrical groove, it can prevent it from rotating the significantly more efficient fixation of expansion tube.
The embodiment of another setting groove in this structure：The groove is annular groove, on the annular groove
It is evenly arranged with three anti-bull sticks.It can prevent it from rotating the significantly more efficient fixation of expansion tube.
In the present embodiment：Sawtooth (not drawn in figure) is provided with the movable end of the anti-bull stick, anti-bull stick is in arc
Shape and fit depressions and anti-rotation rod outer surface is flushed with expansion tube outer surface.By setting sawtooth so that anti-bull stick more with
Contact between the walls, improve frictional force of the anti-bull stick to wall.
Claims (4)
1. a kind of rotary-preventing expansion bolt, including screw rod and the nose cone with screw rod one, also have what is coordinated with screw flight
Nut and the expansion tube being socketed on screw rod, it is characterised in that：Nose cone one end is closed in the expansion tube upper outer surface to set
Groove is equipped with, anti-bull stick is hinged with the bottom portion of groove, spring is provided between groove and anti-bull stick, in the nose cone
On be provided with raised line, the raised line height is identical with expansion tube thickness.
2. rotary-preventing expansion bolt according to claim 1, it is characterised in that：The groove is symmetricly set on outside expansion tube
On surface, the spring is fixedly installed on anti-bull stick and groove.
3. rotary-preventing expansion bolt according to claim 1, it is characterised in that：The groove is annular groove, described
Three anti-bull sticks are evenly arranged with annular groove.
4. according to any described rotary-preventing expansion bolts of claim 1-3, it is characterised in that：In the movable end of the anti-bull stick
On be provided with sawtooth, anti-bull stick is curved with fit depressions and anti-rotation rod outer surface is flushed with expansion tube outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720050257.7U CN206555242U (en) | 2017-01-07 | 2017-01-07 | Rotary-preventing expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720050257.7U CN206555242U (en) | 2017-01-07 | 2017-01-07 | Rotary-preventing expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206555242U true CN206555242U (en) | 2017-10-13 |
Family
ID=60359639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720050257.7U Expired - Fee Related CN206555242U (en) | 2017-01-07 | 2017-01-07 | Rotary-preventing expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206555242U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240334A (en) * | 2020-11-04 | 2021-01-19 | 杨磊 | Anti-loosening expansion bolt |
| CN112360857A (en) * | 2020-11-10 | 2021-02-12 | 黄飞妹 | Combined expansion bolt convenient to install |
| CN112727893A (en) * | 2020-12-25 | 2021-04-30 | 浦江武鑫科技有限公司 | Expansion nut with large opening degree |
| CN116255383A (en) * | 2022-12-29 | 2023-06-13 | 江苏施多德传感科技有限公司 | Separated connecting piece controlled by wireless sensing |
-
2017
- 2017-01-07 CN CN201720050257.7U patent/CN206555242U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240334A (en) * | 2020-11-04 | 2021-01-19 | 杨磊 | Anti-loosening expansion bolt |
| CN112360857A (en) * | 2020-11-10 | 2021-02-12 | 黄飞妹 | Combined expansion bolt convenient to install |
| CN112727893A (en) * | 2020-12-25 | 2021-04-30 | 浦江武鑫科技有限公司 | Expansion nut with large opening degree |
| CN116255383A (en) * | 2022-12-29 | 2023-06-13 | 江苏施多德传感科技有限公司 | Separated connecting piece controlled by wireless sensing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20171013 Termination date: 20180107 |