CN206206348U - Urgent expansion bolt in a kind of - Google Patents
Urgent expansion bolt in a kind of Download PDFInfo
- Publication number
- CN206206348U CN206206348U CN201621090972.5U CN201621090972U CN206206348U CN 206206348 U CN206206348 U CN 206206348U CN 201621090972 U CN201621090972 U CN 201621090972U CN 206206348 U CN206206348 U CN 206206348U
- Authority
- CN
- China
- Prior art keywords
- expanding end
- connecting portion
- expanding
- expansion bolt
- core
- 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.)
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Abstract
The utility model is related to bolt field, specifically, is related to compel expansion bolt in one kind.The utility model includes the housing of tubular, housing is included respectively positioned at the connection end at two ends and expanding end and positioned at middle connecting portion, the expanding end is provided with least two gaps, and the medial surface of expanding end is tapered, and the internal diameter of the cross section of expanding end to being gradually reduced from inside to outside；Bullet core is arranged with connecting portion, playing core includes the press section being engaged with expanding end and the move portion being engaged with connecting portion；The connection end is provided with internal thread.The structure that the utility model is gradually reduced using expanding end internal diameter, and a plurality of gap is set, when in use, expanding end can smoothly expand expansion bolt.
Description
Technical field
The utility model is related to bolt field, specifically, is related to compel expansion bolt in one kind.
Background technology
Currently used for the bolt for being fixed on wall, mostly using pull explosive screw；Because the pipe crimping of pull explosive screw externally expands
Finite volume, causes the frictional force between pull explosive screw and wall limited；Secondly pull explosive screw when in use, has safety hidden
Suffer from；If screw has the action of rollback in fixation procedure.Pipe crimping may be caused to bounce back, the tapered end of screw can not be again introduced into
Inside pipe crimping, so as to can not be formed be compressed to pipe crimping, screw and reel are together released from the mounting hole of wall, are in turn resulted in
Fixed failure.
The content of the invention
The purpose of this utility model is to solve the deficiencies in the prior art, there is provided urgent expansion bolt in a kind of, can be avoided
The problem that pipe crimping can not smoothly expand, and be fixed conveniently.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
Urgent expansion bolt in a kind of, including tubular housing, housing includes the connection end positioned at two ends and expanding end respectively
And positioned at middle connecting portion, the expanding end is provided with least two gaps, and the medial surface of expanding end is tapered, expanding end
The internal diameter of cross section to being gradually reduced from inside to outside；Bullet core is arranged with connecting portion, playing core includes the extruding being engaged with expanding end
Portion and the move portion being engaged with connecting portion；The connection end is provided with internal thread.
Further, the lateral surface of the expanding end is provided with antiskid groove.
Preferably, antiskid groove interval setting and formation ratchet teeth groove.
Further, also it is arranged with pad in connecting portion.
Further, the end of expanding end is provided with inclined-plane.
Used as equally, the end outer surface of expanding end is tapered.
Further, the length in gap is more than 30mm, and the width in gap is 2 ~ 4mm.
The beneficial effects of the utility model are：The structure that the utility model is gradually reduced using expanding end internal diameter, Yi Jishe
A plurality of gap is put, when in use, expanding end can smoothly expand expansion bolt.
Brief description of the drawings
Fig. 1 saves the schematic diagram of bolt for the utility model.
Fig. 2 is a kind of half-section diagram of Fig. 1.
Reference：
1 --- housing 2 --- playing core 11 --- expanding end
12 --- connecting portion 13 --- connection end 14 --- antiskid grooves
15 --- inner chamber 16 --- gap 111 --- inclined-planes
131 --- internal thread.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and detailed description.
Embodiment：Referring to accompanying drawing 1, Fig. 2.
Urgent expansion bolt in a kind of, including tubular housing 1, housing 1 includes respectively positioned at the connection end 13 at two ends and swollen
Swollen end 11 and the connecting portion 12 positioned at centre, the expanding end 11 are provided with least two gaps 16, the medial surface of expanding end 11
Tapered, the internal diameter of the cross section of expanding end 11 to being gradually reduced from inside to outside；Bullet core 2 is arranged with connecting portion 12, playing core 2 includes
The press section being engaged with expanding end 11 and the move portion being engaged with connecting portion 12；The connection end 13 is provided with internal thread 131.
The technical program when in use, is first inserted in the mounting hole of wall housing 1, followed by utilization rushes rod instrument to bullet
Core 2 carries out punching press, specially：The one end for rushing rod compresses bullet core 2, then has percussion thing to tap and rushes rod, play the move portion of core 2 along
The inside movement of connecting portion 12, the press section for playing core 2 is compressed to expanding end 11；With going deep into for the press section for playing core 2 so that swollen
Swollen end 11 is gradually bent outwardly；Expanding end 11 and wall extruding and clamping；Then, the screw rod of bolt is threadedly coupled with connection end 13
And cause that the end of screw rod offsets with core 2 is played, so as to prevent bullet core 2 from retreating, it is to avoid expanding end 11 bounces back.And then reach preferably
Firm effect.It is that the part that expanding end 11 is outwards expanded increasing with going deep into for core 2 is played, expanding end 11 is set here
To being gradually reduced from inside to outside, i.e., internal diameter is gradually reduced the internal diameter of cross section from the inside to the outside for the inner chamber 15 of expanding end 11.Preferably, bullet
The also tapered setting of the press section of core 2, so plays core 2 and increases with the contact area of expanding end 11, it is to avoid linear contact lay, causes expansion
End bending.
Preferably, the inwall of connecting portion 12 is provided with projection, and move portion is provided with the guide groove being engaged with projection.
Tap play core when, play core guide groove projection is stuck in always in so that play core movement orientation.Avoid internally revolving
Turn so that the unbalance stress of expanding end 11.
Further, the lateral surface of the expanding end 11 is provided with antiskid groove 14.
Preferably, the interval setting of antiskid groove 14 and formation ratchet teeth groove.
Setting antiskid groove 14 can further increase the frictional force of expanding end 11 and wall time；By antiskid groove 14
It is arranged to ratchet teeth groove, can further prevents the outer shifting of expanding end 11.
Further, also it is arranged with pad in connecting portion 12.
When in use, generally by rod instrument shock bullet core 2 is rushed, core 2 will be played and is extruded to expanding end 11；To prevent rushing rod
Partially, cause the bullet moving direction of core 2 off-center in the dynamics direction of shock；Here there is provided pad, is buffered by pad, make as far as possible
Obtain uniform force.
Further, the end of expanding end 11 is provided with inclined-plane 111.
During use, expanding end 11 will be deep into wall, and for convenience of inserting, the outer end diameter of expanding end 11 needs to set
Haggle over small；Also to facilitate the connecting portion 12 that centre is transitioned into from expanding end 11 simultaneously；Therefore it is provided with inclined-plane 111；Expanding end 11
End to inside contracting so that external diameter of the external diameter foremost less than middle part.
Used as equally, the end outer surface of expanding end 11 is tapered.
Further, the length in gap 16 is more than 30mm, and the width in gap 16 is 2 ~ 4mm.
In expansion, the length in gap 16, width are required to meet certain requirement expanding end 11.It is demonstrated experimentally that gap
16 length, width are respectively in more than 30mm, 2 ~ 4mm, and effect is preferable.Expanding end 11 quickly can smoothly expand.
The above is only the preferred embodiment of the application, equivalent technical solutions on this basis still fall within application protection model
Enclose.
Claims (5)
1. expansion bolt is compeled in one kind, it is characterised in that：Housing including tubular, housing includes connection end respectively positioned at two ends
With expanding end and positioned at middle connecting portion, the expanding end is provided with least two gaps, and the medial surface of expanding end is tapered,
The internal diameter of the cross section of expanding end to being gradually reduced from inside to outside；Bullet core is arranged with connecting portion, playing core includes matching with expanding end
The press section of conjunction and the move portion being engaged with connecting portion；The connection end is provided with internal thread.
2. expansion bolt is compeled in one kind according to claim 1, it is characterised in that：The lateral surface of the expanding end is provided with anti-
Sliding groove.
3. expansion bolt is compeled in one kind according to claim 1, it is characterised in that：Pad is also arranged with connecting portion.
4. expansion bolt is compeled in one kind according to claim 1, it is characterised in that：The end of expanding end is provided with inclined-plane.
5. according to urgent expansion bolt in any described one kind of Claims 1-4, it is characterised in that：The length in gap is more than
30mm, the width in gap is 2 ~ 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621090972.5U CN206206348U (en) | 2016-09-29 | 2016-09-29 | Urgent expansion bolt in a kind of |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621090972.5U CN206206348U (en) | 2016-09-29 | 2016-09-29 | Urgent expansion bolt in a kind of |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206206348U true CN206206348U (en) | 2017-05-31 |
Family
ID=58762588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621090972.5U Active CN206206348U (en) | 2016-09-29 | 2016-09-29 | Urgent expansion bolt in a kind of |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206206348U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111512054A (en) * | 2017-12-29 | 2020-08-07 | 喜利得股份公司 | Fastening piece |
-
2016
- 2016-09-29 CN CN201621090972.5U patent/CN206206348U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111512054A (en) * | 2017-12-29 | 2020-08-07 | 喜利得股份公司 | Fastening piece |
| US11859647B2 (en) | 2017-12-29 | 2024-01-02 | Hilti Aktiengesellschaft | Fastener |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |