CN209705022U - A kind of Anti-extrusion expansion bolt - Google Patents
A kind of Anti-extrusion expansion bolt Download PDFInfo
- Publication number
- CN209705022U CN209705022U CN201822111367.7U CN201822111367U CN209705022U CN 209705022 U CN209705022 U CN 209705022U CN 201822111367 U CN201822111367 U CN 201822111367U CN 209705022 U CN209705022 U CN 209705022U
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- expansion
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- bolt
- hole
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Abstract
The utility model discloses a kind of Anti-extrusion expansion bolts, including bolt, casing, spring washer and expansion nut, the casing includes sleeve body and bottom plate and card positioned at sleeve body both ends, through equipped with through-hole in the bottom plate and sleeve body, described sleeve pipe ontology is equipped with the segmental arc outwardly protruded by proximal portion, annular protrusion is equipped with positioned at the bottom end of segmental arc on the inner wall of the through-hole, the outer wall of described sleeve pipe ontology is equipped with several the first grooves through tube wall for extending to bottom end, the expansion nut includes columned compressing section and round table-like expansion arc, through equipped with threaded hole in the compressing section and expansion arc, the card is inclined at the bottom of sleeve body and forms a flaring, the tilt angle and expansion arc of the card are adapted, inner wall of the card close to bottom end is equipped with second Groove, tightness is good, suitable for the larger deeper preset holes in aperture, can prevent from.
Description
[technical field]
The utility model relates to the technical field of expansion bolt, especially a kind of technical field of Anti-extrusion expansion bolt.
[background technique]
Expansion bolt is usually to be made of components such as screw rod cylinder, expansion-head, expansion sleeve, nut, washer and gaskets,
Nut external and the built-in expansion bolt of nut can be divided into according to the location of nut.Nut external expansion bolt refers to
Nut is exposed to the form of outside, and turning nut fastens expansion bolt；The built-in expansion bolt of nut refers to that nut (expands
Head) it is buried enter the connectors such as wall or concrete interior form of getting into the cave, the screw head for turning screw rod cylindrical end portions makes expansion bolt
Fastening.
Current expansion bolt is got into the cave to bore during the installation process and can not be bored deeply shallowly, once it bores deeply, in nut
The formula expansion bolt of setting is easy to fall nut (i.e. expansion-head) in getting into the cave, and especially holds when screw rod cylinder is screwed into Shi Huigeng again
Easily occur, to put to no little inconvenience, and when turning, bolt (screw rod cylinder) and nut are easy to rotate together generation not
The phenomenon that capable of fastening, influences the use of expansion bolt.In addition, when the aperture of preset holes is larger, it is swollen if expansion pipe size is less than normal
Swollen head only carries out spreading to casing in the bottom end of casing and fixes, be easy to make to be fixed on the part to be fixed of the other end of casing by
It is repeatedly loosened after vibration, built on the sand so as to cause device installation.
[utility model content]
The purpose of this utility model is exactly to solve the problems of the prior art, proposes a kind of Anti-extrusion expansion bolt, can
By being equipped with the bottom plate with spine in cannula tip, avoids casing from rotating in hole together with expansion nut with bolt, protect
The tightness for having demonstrate,proved expansion bolt bends card by the way that the second groove is arranged on card, avoids expansion nut from falling, pass through
The retraction of expansion nut is so that segmental arc bending deformation, clamping preset holes and bolt, enhance the locking property of expansion bolt respectively.
To achieve the above object, the utility model proposes a kind of Anti-extrusion expansion bolts, including bolt, casing, spring
Washer and expansion nut, the casing include sleeve body and bottom plate and card positioned at sleeve body both ends, the bottom plate
It is equipped with through-hole with running through in sleeve body, described sleeve pipe ontology is equipped with the segmental arc outwardly protruded, the through-hole by proximal portion
Inner wall on be located at the bottom end of segmental arc and be equipped with annular protrusion, the outer wall of described sleeve pipe ontology is equipped with several and extends to bottom
First groove through tube wall at end, the expansion nut includes columned compressing section and round table-like expansion arc, the pressure
To compel through threaded hole is equipped in section and expansion arc, the card is inclined at the bottom of sleeve body and forms a flaring,
The tilt angle of the card and expansion arc are adapted, and inner wall of the card close to bottom end is equipped with the second groove and can be along
Second groove bends inwards to form a cavity to which expansion arc is fixed on inside, and the bolt includes hexagonal screw head and has
Externally threaded screw rod, the screw rod sequentially pass through spring washer, casing and expansion nut from top to bottom.
Preferably, the card and the first groove are distributed along the axis misalignment of casing.
Preferably, the compressing section and expansion arc are structure as a whole, outer diameter and the compressing section on the expansion arc top
Outer diameter is identical, and when expansion arc sleeve pipe can make casing along the first groove spreading.
Preferably, be located at segmental arc under through-hole aperture and compressing section outer diameter be adapted, be located at segmental arc it
On the aperture of through-hole and the outer diameter of screw rod be adapted, the outer diameter of the internal diameter of the annular protrusion slightly larger than compressing section, the spiral shell
The aperture of pit and the outer diameter of screw rod are adapted, and the length of the through-hole under segmental arc is consistent with the compressing length of section.
Preferably, described sleeve pipe is located at the thickness that the pipe thickness at segmental arc is less than the tube wall being located under segmental arc
Degree.
Preferably, the segmental arc is equipped with recess by proximal portion, the internal diameter of the recess is greater than the outer diameter of screw rod.
Preferably, the bottom surface of the bottom plate is equipped with several spines.
The utility model has the beneficial effects that the utility model is avoided by being equipped with the bottom plate with spine in cannula tip
Casing rotates in hole together with expansion nut with bolt, ensure that the tightness of expansion bolt, by being arranged on card
Second groove bends card, and expansion nut is avoided to fall, by the retraction of expansion nut so that segmental arc bending deformation, difference
Clamping preset holes and bolt enhance the locking property of expansion bolt.
The feature and advantage of the utility model will be described in detail by embodiment combination attached drawing.
[Detailed description of the invention]
Fig. 1 is a kind of main view of Anti-extrusion expansion bolt of the utility model；
Fig. 2 is a kind of main view of the casing of Anti-extrusion expansion bolt of the utility model；
Fig. 3 is a kind of top view of the casing of Anti-extrusion expansion bolt of the utility model；
Fig. 4 is a kind of main view of the expansion nut of Anti-extrusion expansion bolt of the utility model；
Fig. 5 is a kind of main view of the bolt of Anti-extrusion expansion bolt of the utility model.
In figure: 1- bolt, 11- hexagonal screw head, 12- screw rod, 2- casing, 21- bottom plate, 211- spine, 22- sleeve body,
221- annular protrusion, the first groove of 222-, 23- segmental arc, 231- recess, 24- card, the second groove of 241-, 25- through-hole, 3-
Spring washer, 4- expansion nut, 41- compressing section, 42- expansion arc and 43- threaded hole.
[specific embodiment]
Refering to fig. 1 to Fig. 5, a kind of Anti-extrusion expansion bolt of the utility model, including bolt 1, casing 2,3 and of spring washer
Expansion nut 4, the casing 2 includes sleeve body 22 and bottom plate 21 and card 24 positioned at 22 both ends of sleeve body, described
Through through-hole 25 is equipped in bottom plate 21 and sleeve body 22, described sleeve pipe ontology 22 is equipped with the arc outwardly protruded by proximal portion
Section 23, the bottom end that segmental arc 23 is located on the inner wall of the through-hole 25 are equipped with annular protrusion 221, described sleeve pipe ontology 22 it is outer
Wall is equipped with several the first grooves 222 through tube wall for extending to bottom end, and the expansion nut 4 includes columned compressing
Through threaded hole 43 is equipped in section 41 and round table-like expansion arc 42, the compressing section 41 and expansion arc 42, the card 24 inclines
The bottom of sleeve body 22 is tiltedly set and forms a flaring, the tilt angle and expansion arc 42 of the card 24 are adapted,
Inner wall of the card 24 close to bottom end is equipped with the second groove 241 and can bend inwards to form one along the second groove 241
To which expansion arc 42 is fixed on inside, the bolt 1 includes hexagonal screw head 11 and has externally threaded screw rod 12 cavity, described
Screw rod 12 sequentially passes through spring washer 3, casing 2 and expansion nut 4 from top to bottom, the card 24 and the first groove 222 along
The axis misalignment of casing 2 is distributed, and the compressing section 41 and expansion arc 42 are structure as a whole, the outer diameter on 42 top of expansion arc and
The outer diameter for oppressing section 41 is identical, and when 42 sleeve pipe 2 of expansion arc can make casing 2 along 222 spreading of groove, is located at segmental arc
The aperture of through-hole 25 under 23 and the outer diameter of compressing section 41 are adapted, the aperture of the through-hole 25 on segmental arc 23 and spiral shell
The outer diameter of bar 12 is adapted, outer diameter of the internal diameter slightly larger than compressing section 41 of the annular protrusion 221, the hole of the threaded hole 43
The outer diameter of diameter and screw rod 12 is adapted, and the length of the through-hole 25 under segmental arc 23 is consistent with the compressing length of section 41, institute
State the thickness that the pipe thickness that casing 2 is located at segmental arc 23 is less than the tube wall being located under segmental arc 23, the segmental arc 23
It is equipped with recess 231 by proximal portion, the internal diameter of the recess 231 is greater than the outer diameter of screw rod 12, and the bottom surface of the bottom plate 21 is equipped with
Several spines 211.
Utility model works process:
A kind of Anti-extrusion expansion bolt of the utility model during the work time, firstly, by the compressing section 41 of expansion nut 4 from
In the bottom insertion through-hole 25 of casing 2 and it is placed in the expansion arc 42 of expansion nut 4 in the flaring in 2 bottom end card 24 of casing,
Sky is formed by after bending inwards card 24 so that expansion nut 4 is fixed on the bending of card 24 then along the second groove 241
It is intracavitary, by casing 2 in the direction directed downwardly of card 24 insertion preset holes.Then, by the through-hole alignment ground of part to be fixed or
Preset holes on wall are inserted into preset holes after bolt 1 is passed through spring washer 4.Bolt 1 is tightened, so that 4 edge of expansion nut
Bolt 1 screw rod 12 bounce back.With the retraction of expansion nut 4, oppresses section 41 and gradually oppress the relatively thin segmental arc of tube wall upwards
23 make the biggish bending part of 23 downside of segmental arc continue to bend along original bending direction, the biggish bending of segmental arc 23
Part outwardly protrudes and blocks the hole wall of preset holes, and preset holes can be even pierced into when the quality on ground or metope is more loose
Interior, then, compressing section 41 gradually passes through annular protrusion 221, makes in 42 sleeve pipe 2 of expansion arc to make casing 2 along first
222 spreading of groove, meanwhile, sleeve body 22 under segmental arc 23 is gradually close upwards due to the deformation of segmental arc 23
The lesser bending part of bottom plate 21,23 upside of segmental arc continues to bend along original overbending direction, makes recess 231 to axis
The heart is close to simultaneously clamping bolt 1.
The utility model by cannula tip be equipped with spine bottom plate, avoid casing together with expansion nut with
Bolt rotates in hole, ensure that the tightness of expansion bolt, bends card by the way that the second groove is arranged on card, avoids
Expansion nut falls, by the retraction of expansion nut so that segmental arc bending deformation, clamping preset holes and bolt, enhance respectively
The locking property of expansion bolt.
Above-described embodiment is the explanation to the utility model, is not the restriction to the utility model, and any pair of sheet is practical new
Scheme after type simple transformation belongs to the protection scope of the utility model.
Claims (7)
1. a kind of Anti-extrusion expansion bolt, it is characterised in that: including bolt (1), casing (2), spring washer (3) and expansion nut
(4), the casing (2) include sleeve body (22) and be located at sleeve body (22) both ends bottom plate (21) and card (24),
Through being equipped with through-hole (25) in the bottom plate (21) and sleeve body (22), described sleeve pipe ontology (22) by proximal portion be equipped with to
The segmental arc (23) of outer protrusion, the bottom end that segmental arc (23) are located on the inner wall of the through-hole (25) are equipped with annular protrusion
(221), the outer wall of described sleeve pipe ontology (22) is equipped with several the first grooves (222) through tube wall for extending to bottom end,
The expansion nut (4) includes columned compressing section (41) and round table-like expansion arc (42), the compressing section (41) and swollen
Through threaded hole (43) are equipped in swollen section (42), the card (24) is inclined at the bottom of sleeve body (22) and forms one
A flaring, the tilt angle of the card (24) and expansion arc (42) are adapted, and the card (24) is on the inner wall of bottom end
It can bend inwards equipped with the second groove (241) and along the second groove (241) to form a cavity to which expansion arc (42) are solid
Be scheduled on inside, the bolt (1) includes hexagonal screw head (11) and with externally threaded screw rod (12), the screw rod (12) from up to
Under sequentially pass through spring washer (3), casing (2) and expansion nut (4).
2. a kind of Anti-extrusion expansion bolt as described in claim 1, it is characterised in that: the card (24) and the first groove
(222) it is distributed along the axis misalignment of casing (2).
3. a kind of Anti-extrusion expansion bolt as described in claim 1, it is characterised in that: the compressing section (41) and expansion arc
(42) it is structure as a whole, the outer diameter on expansion arc (42) top is identical as the compressing outer diameter of section (41), the expansion arc (42)
Casing (2) can be made along the first groove (222) spreading when sleeve pipe (2).
4. a kind of Anti-extrusion expansion bolt as described in claim 1, it is characterised in that: the through-hole being located under segmental arc (23)
(25) outer diameter in aperture and compressing section (41) is adapted, and is located at aperture and the screw rod of the through-hole (25) on segmental arc (23)
(12) outer diameter is adapted, outer diameter of the internal diameter slightly larger than compressing section (41) of the annular protrusion (221), the threaded hole (43)
Aperture and screw rod (12) outer diameter be adapted, be located at segmental arc (23) under through-hole (25) length and compressing section (41)
Length it is consistent.
5. a kind of Anti-extrusion expansion bolt as described in claim 1, it is characterised in that: described sleeve pipe (2) is located at segmental arc
(23) pipe thickness at is less than the thickness for the tube wall being located under segmental arc (23).
6. a kind of Anti-extrusion expansion bolt as described in claim 1, it is characterised in that: the segmental arc (23) leans on proximal portion
Equipped with recess (231), the internal diameter of the recess (231) is greater than the outer diameter of screw rod (12).
7. a kind of Anti-extrusion expansion bolt as described in claim 1, it is characterised in that: the bottom plate (21) if bottom surface be equipped with
Dry spine (211).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822111367.7U CN209705022U (en) | 2018-12-17 | 2018-12-17 | A kind of Anti-extrusion expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822111367.7U CN209705022U (en) | 2018-12-17 | 2018-12-17 | A kind of Anti-extrusion expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209705022U true CN209705022U (en) | 2019-11-29 |
Family
ID=68636425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822111367.7U Active CN209705022U (en) | 2018-12-17 | 2018-12-17 | A kind of Anti-extrusion expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209705022U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322889A (en) * | 2018-12-17 | 2019-02-12 | 嘉兴钰丰汽车零部件有限公司 | A kind of Anti-extrusion expansion bolt |
| CN113915214A (en) * | 2020-07-07 | 2022-01-11 | 国山石材企业有限公司 | Anti-falling reverse hanging screw for stone and mounting method thereof |
-
2018
- 2018-12-17 CN CN201822111367.7U patent/CN209705022U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322889A (en) * | 2018-12-17 | 2019-02-12 | 嘉兴钰丰汽车零部件有限公司 | A kind of Anti-extrusion expansion bolt |
| CN109322889B (en) * | 2018-12-17 | 2023-08-25 | 嘉兴钰丰汽车零部件股份有限公司 | Anti-falling expansion bolt |
| CN113915214A (en) * | 2020-07-07 | 2022-01-11 | 国山石材企业有限公司 | Anti-falling reverse hanging screw for stone and mounting method thereof |
| CN113915214B (en) * | 2020-07-07 | 2023-03-24 | 国山石材企业有限公司 | Anti-falling reverse hanging screw for stone and mounting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 314300 Qinshan Street Industrial Park, Haiyan County, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Yufeng Auto Parts Co.,Ltd. Address before: 314300 Qinshan Street Industrial Park, Haiyan County, Jiaxing City, Zhejiang Province Patentee before: JIAXING YUFENG CAR PARTS Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |