CN206072054U - A kind of outer urgent expansion bolt - Google Patents
A kind of outer urgent expansion bolt Download PDFInfo
- Publication number
- CN206072054U CN206072054U CN201621090830.9U CN201621090830U CN206072054U CN 206072054 U CN206072054 U CN 206072054U CN 201621090830 U CN201621090830 U CN 201621090830U CN 206072054 U CN206072054 U CN 206072054U
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- CN
- China
- Prior art keywords
- connecting portion
- outer urgent
- annular protrusion
- core
- expansion bolt
- 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
This utility model is related to bolt field, specifically, is related to a kind of outer urgent expansion bolt.This utility model includes outer urgent pipe and plays core, and one end of outer urgent pipe is expanding end；Playing core includes connecting portion and conical head, the inside of expanding end is provided with the shifting chute being engaged with connecting portion, the side of the connecting portion is provided with least one annular protrusion, and the cross section of annular protrusion is in reversed acanthoid, and the side of the shifting chute is provided with the cannelure being engaged with annular protrusion.This utility model passes through the annular protrusion for designing reversed acanthoid so that expanding end and the connecting portion clamping for playing core, is conducive to playing the insertion of core and can prevent bullet core from exiting.
Description
Technical field
This utility model is related to expansion bolt field, specifically, is related to a kind of outer urgent expansion bolt.
Background technology
Urgent expansion bolt is typically made up of outer urgent pipe and bullet core outward, is played the expanding end of the outer urgent pipe of head insertion of core, is made
With front, the head for playing core is connected with expanding end, and connection more relaxes, play core can relative expansion end short-distance movement, transporting
During defeated, it be collided or vibrate, frequently results in bullet core and separate with expanding end, when reusing or selling, need artificial company
Connect, increased cost of labor.
The content of the invention
The purpose of this utility model is to solve the deficiencies in the prior art, there is provided a kind of outer urgent expansion bolt, and this is outer urgent swollen
Swollen bolt arrangement is stable, plays core and is not readily separated with expanding end.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
A kind of outer urgent expansion bolt, including outer urgent pipe and bullet core, one end of outer urgent pipe is expanding end；Playing core includes connecting portion
And conical head, the inside of expanding end is provided with the shifting chute being engaged with connecting portion, and the side of the connecting portion is provided with least one
Annular protrusion, and the cross section of annular protrusion is in reversed acanthoid, the side of the shifting chute is provided with the ring being engaged with annular protrusion
Shape groove.
Preferably, the side of connecting portion is provided with multiple annular protrusions at equal intervals.
Further, the surface of expanding end is provided with the groove that multiple annulars are arranged.
Yet further, perforation is provided with groove, is provided with perforation and is grabbed wall nail.
Preferably, connecting portion is provided with and grabs the chute that wall nail coordinates, and the bottom surface of chute is inclined to set.
The beneficial effects of the utility model are：Annular protrusion of this utility model by design reversed acanthoid so that expanding end
With the connecting portion clamping for playing core, be conducive to playing the insertion of core and can prevent bullet core from exiting.
Description of the drawings
Fig. 1 is a kind of half-section diagram of the present utility model.
Fig. 2 is another kind of half-section diagram of the present utility model.
Reference：
1 --- compels outward pipe 2 --- playing core 3 --- gap
11 --- connection end 12 --- expanding end 13 --- female threads
14 --- groove 21 --- connecting portion 22 --- annular protrusions；
23 --- grab wall nail.
Specific embodiment
With reference to the accompanying drawings and detailed description this utility model is described further.
Embodiment：Referring to accompanying drawing 1 to Fig. 2.
A kind of outer urgent expansion bolt, including outer urgent pipe 1 and bullet core 2, one end of outer urgent pipe 1 is expanding end 12；Playing core 2 includes
Connecting portion 21 and conical head, the inside of expanding end 12 are provided with the shifting chute being engaged with connecting portion 21, the side of the connecting portion 21
Face is provided with least one annular protrusion 22, and the cross section of annular protrusion 22 is in reversed acanthoid, the side of the shifting chute be provided with
The cannelure that annular protrusion 22 is engaged.
The annular protrusion 22 of reversed acanthoid is set so that play core 2 and 12 clamping of expanding end；Bullet core 2 is conducive to insert swollen simultaneously
Swollen end 12, and play core 2 be difficult to exit expanding end 12.The other end of outer urgent pipe 1 is connection end 11, and connection end 11 is provided with female thread
13, for being connected with bolt etc..Expanding end 12 is provided with a plurality of gap 3, so that expanding end 12 is easy to expansion.Can certainly set
Put a plurality of geosutures.
Preferably, the side of connecting portion 21 is provided with multiple annular protrusions 22 at equal intervals.
Multiple annular protrusions 22 are set, when elasticity is exited, bigger resistance can be run into, and can be prevented because accidental
Vibration factor, plays 2 relative movement groove of core and is moved rearwards by and exits expanding end 12.
Further, the surface of expanding end 12 is provided with the groove 14 that multiple annulars are arranged.
Groove 14 is set, the frictional force and body of wall between can be increased.
Yet further, perforation is provided with groove 14, is provided with perforation and grabs wall nail 23.
The frictional force that wall nail 23 further can increase and body of wall between is grabbed in setting.
Preferably, connecting portion 21 is provided with and grabs the chute that wall nail 23 coordinates, and the bottom surface of chute is inclined to set.
The bottom surface of chute is inclined to set, the depth of chute from conical head more away from depth it is bigger.When conical head is stepped into
During expanding end 12, grab wall nail 23 and be progressively ejected.
The above is only the preferred embodiment of the application, equivalent technical solutions on this basis still fall within application protection model
Enclose.
Claims (4)
1. a kind of outer urgent expansion bolt, including outer urgent pipe and bullet core, one end of outer urgent pipe is expanding end；Play core include connecting portion and
Conical head, the inside of expanding end are provided with the shifting chute being engaged with connecting portion, it is characterised in that：The side of the connecting portion is provided with
At least one annular protrusion, and the cross section of annular protrusion is in reversed acanthoid, the side of the shifting chute is provided with and annular protrusion phase
The cannelure of cooperation.
2. a kind of outer urgent expansion bolt according to claim 1, is characterised by：The side of connecting portion is provided with many at equal intervals
Individual annular protrusion.
3. a kind of outer urgent expansion bolt according to claim 1, is characterised by：The surface of expanding end is provided with multiple annulars and sets
The groove put.
4. a kind of outer urgent expansion bolt according to claim 3, is characterised by：Perforation is provided with groove, is provided with perforation
Grab wall nail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621090830.9U CN206072054U (en) | 2016-09-29 | 2016-09-29 | A kind of outer urgent expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621090830.9U CN206072054U (en) | 2016-09-29 | 2016-09-29 | A kind of outer urgent expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206072054U true CN206072054U (en) | 2017-04-05 |
Family
ID=58439690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621090830.9U Active CN206072054U (en) | 2016-09-29 | 2016-09-29 | A kind of outer urgent expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206072054U (en) |
-
2016
- 2016-09-29 CN CN201621090830.9U patent/CN206072054U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |