CN107575451B - A kind of easy-to-dismount expansion bolt - Google Patents
A kind of easy-to-dismount expansion bolt Download PDFInfo
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- CN107575451B CN107575451B CN201710952438.3A CN201710952438A CN107575451B CN 107575451 B CN107575451 B CN 107575451B CN 201710952438 A CN201710952438 A CN 201710952438A CN 107575451 B CN107575451 B CN 107575451B
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- expansion bolt
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Abstract
A kind of easy-to-dismount expansion bolt, including bolt, casing and nut, described sleeve pipe include sleeve sections and expansion arc, and the outer end of described sleeve pipe is equipped with along the outwardly extending extended segment of casing generatrix direction.When installation, expansion bolt is inserted into mounting hole until after required depth, by hand or by tool by 90 degree of extended segment outward bending of casing, be bonded the second bending segment with wall or ground is installed, it is subsequent when tightening nut can depth to casing and rotation play control and restriction effect.It when disassembly, first backs out nut and taps bolt, then broken or levered up the second bending segment, can very convenient by vice or nipper plier, firmly clamp the bite of extended segment end, casing is extracted into mounting hole outward.Meanwhile the present invention does not change existing expansion bolt production technology, also without increasing production procedure, only need to change the cutting size of existing production process middle sleeve or stamping die be can be realized, therefore will not additionally increase cost relative to existing product.
Description
Technical field
The invention belongs to mechanical engineering technical fields, are related to a kind of device for anchoring or fixing, more particularly to one
The easy-to-dismount expansion bolt of kind.
Background technique
Expansion bolt is made of components such as casing and bolts, suitable for making anchor on concrete or brick wall, ground
Solid has the characteristics that easy to use, connection is firm, cheap.As shown in Figure 1, be a kind of most widely used, price most
For cheap expansible anchor of metal, including bolt 1, casing 2, plain cushion 3, spring pad 4 and nut 5, described sleeve pipe 2 is integral type circle
Barrel structure, the inner end for going deep into wall are equipped with 2 or more dilatation joints 24, casing 2 are divided for sleeve sections 23 and expansion arc 25.Such
After the expansion bolt of type is installed, due to the casing abundant distending inside wall, it is generally difficult to be removed.Especially
When casing integrally gos deep into inside mounting hole, it is difficult to clamp casing by tools such as vice or nipper pliers, only be pulled with outside
Bolt at all can not take out setscrew from mounting hole.
To solve the problems, such as that expansion bolt is not easy to disassemble, Chinese patent CN2011201908858 discloses a kind of expanding screw
Casing can be pulled out mounting hole by bolt, the pull rod by the way that inside screw is arranged in, and which greatly improves the system of expansion bolt
Cause this, it is difficult to dominate the market on a large scale.Chinese patent CN982218613, CN2016205322862, CN2017200556204
Etc. disclosing the dismountable expansion bolt of several structure proximates, by the way that the structures such as step or outer overlap, limit is arranged in casing outer end
The outer end of casing processed enters mounting hole, to can clamp step or outer with vice or nipper plier when dismantling expansion bolt
Casing is pulled out mounting hole by overlap.The technical solution suffer from the drawback that first is that step or outer overlap it is relatively thin and be close to wall
Body is not easy to vice or nipper plier clamping；Second is that being limited by step or outer overlap, casing is difficult to whole into mounting hole
In, the wall thicker for insulating layer or decorative layer or ground, the expansion arc of casing are possible to be difficult to be deep into concrete or brick
The inside of the blank walls such as body, there are install failure risks；Third is that the production technology that will lead to setscrew complicates, and then cause to produce
Increased production cost for product.
The reason of causing production technology to complicate, is specific as follows: the casing of setscrew generally use two kinds of production technologies into
Row large-scale production, the first is to select the steel (iron) of suitable diameter and thickness pipe, directly cuts molding, and second is to select to close
Then steel (iron) plate of suitable thickness is rolled into tubular first according to mold cutting or punch forming again, that is, complete processing.For upper
Technical solution is stated, if step or outer overlap is arranged in casing outer end, molding base must be produced in the existing technological process of production
On plinth, the process for being further added by step welding or punching press, i.e., in casing outer end formation step or outside by way of welding or punching press
Flash structure.Production process increases, and necessarily makes that increased production cost.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of simple production process, low in cost, installation are provided
Reliable performance, easy-to-dismount expansion bolt afterwards.
To achieve the above object, present invention employs following technical solutions:
A kind of easy-to-dismount expansion bolt, including bolt 1, casing 2 and nut 5, described sleeve pipe 2 include 23 He of sleeve sections
Expansion arc 25；The outer end of described sleeve pipe 2 is equipped with along the outwardly extending extended segment 21 of 2 generatrix direction of casing, the extended segment 21
Development length is greater than the wall thickness of casing 2, and the width of the extended segment 21 is the 1/20 to 1/6 of 2 circumferential length of casing.
Further, the extended segment 21 and the sleeve sections 23 and 25 integrated punching of expansion arc of casing 2 form, or one cutting
Molding.
Further, the outwardly extending end in the extended segment 21 is equipped with bite 22, and the width of the bite 22 is greater than
The width of extended segment 21.
Further, the shape of the bite is one of rectangle, circle, ellipse, triangle, trapezoidal or diamond shape.
Further, the extended segment 21 of the bite 22 and casing 2,25 one of sleeve sections 23, dilatation joint 24 and expansion arc
Punch forming, or integrated cutting forming.
Further, the extended segment 21 of described sleeve pipe 2 can keep not broken with 90 degree of outward bending and after restoring to the original state.
Further, the quantity of the extended segment 21 is one or more.
The invention also includes following technical solutions:
A kind of easy-to-dismount expansion bolt, including bolt 1, casing 2 and nut 5, described sleeve pipe 2 include 23 He of sleeve sections
Expansion arc 25；The outer end of described sleeve pipe 2 is equipped with along the outwardly extending extended segment 21 of 2 generatrix direction of casing, the extended segment 21
Development length is greater than the wall thickness of casing 2, and the width of the extended segment 21 is 1/20,1/15,1/12, the 1/ of 2 circumferential length of casing
10,1/8 or 1/6；The outwardly extending end in the extended segment 21 is equipped with bite 22, and the width of the bite 22, which is greater than, to be extended
The width of section 21, the shape of the bite 22 are one of rectangle, circle, ellipse, triangle, trapezoidal or diamond shape.
Further, the sleeve sections 23, expansion arc 25 of described sleeve pipe 2, extended segment 21 and the molding of 22 integrated punching of bite, or
Integrated cutting forming.
Further, the extended segment 21 of described sleeve pipe 2 can keep not broken with 90 degree of outward bending and after restoring to the original state.
Further, the quantity of the extended segment 21 is one or more.
The present invention additionally uses following technical solution:
A kind of easy-to-dismount expansion bolt, including bolt 1, casing 2, spring pad 4 and nut 5, described sleeve pipe 2 include set
Cylinder section 23 and expansion arc 25；The outer end of described sleeve pipe 2 is equipped with along the outwardly extending extended segment 21 of 2 generatrix direction of casing, described to prolong
The development length for stretching section 21 is 1 times, 1.5 times, 2 times, 2.5 times or 3 times of 2 radius of casing；The width of the extended segment 21 is set
1/20,1/15,1/12,1/10,1/8 or the 1/6 of 2 circumferential length of pipe；The outwardly extending end in the extended segment 21 is equipped with clamping
Point 22, the width of the bite 22 are greater than the width of extended segment 21, and the shape of the bite 22 is rectangle, circle, ellipse
One of shape, triangle, trapezoidal or diamond shape.
Further, the sleeve sections 23, expansion arc 25 of described sleeve pipe 2, extended segment 21 and the molding of 22 integrated punching of bite, or
Integrated cutting forming.
Further, the extended segment 21 of described sleeve pipe 2 can keep not broken with 90 degree of outward bending and after restoring to the original state.
Further, the quantity of the extended segment 21 is one or more.
Expansion bolt is inserted into mounting hole until institute by a kind of easy-to-dismount expansion bolt of the present invention when being installed
After needing depth, by hand or by tool by 90 degree of extended segment outward bending of casing, make the second bending segment and installation wall or ground
Face paste is closed, and during subsequent tightening nut, the second bending segment can play control and restriction effect to the depth of casing, and limit
Casing processed improves the installation quality and performance of expansion bolt in mounting hole inner rotation, improves reliable in use process
Property.When dismantling expansion bolt, nut is backed out first and taps bolt, bolt inner end is separated with casing expandable section, has then broken
Or the second bending segment is levered up, the bite of extended segment end can very convenient by vice or nipper plier, be firmly clamped,
Casing is extracted into mounting hole outward.The present invention does not change existing expansion bolt production technology, also without increasing production procedure,
Only need to change the cutting size of existing production process middle sleeve or stamping die can be realized, therefore not relative to existing product
Manufacturing cost can additionally be increased.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of expansion bolt using the prior art；
Fig. 2 is a kind of overall structure diagram of easy-to-dismount expansion bolt of the present invention；
Fig. 3 is a kind of overall structure diagram of the casing of easy-to-dismount expansion bolt of the present invention；
Fig. 4 is a kind of overall structure diagram of easy-to-dismount expansion bolt of the present invention during the installation process；
Fig. 5 is the structural schematic diagram after a kind of easy-to-dismount expansion bolt of the present invention is installed；
Fig. 6 is a kind of schematic shapes of the extended segment bite of easy-to-dismount expansion bolt of the present invention.
Specific embodiment
Below in conjunction with attached drawing 2 to 6, a kind of specific embodiment party of easy-to-dismount expansion bolt of the present invention is further illustrated
Formula.A kind of easy-to-dismount expansion bolt of the present invention is not limited to the following description.
As shown in Figures 2 and 3, a kind of easy-to-dismount expansion bolt, including bolt 1, casing 2, plain cushion 3 and nut 5, it is described
Casing 2 includes sleeve sections 23 and expansion arc 25.The outer end of described sleeve pipe 2 is equipped with along the outwardly extending extension of 2 generatrix direction of casing
Section 21, the outwardly extending end in the extended segment 21 are equipped with bite 22.The bite and 22 with the extended segment 21 of casing 2,
Sleeve sections 23 and the molding of 25 integrated punching of expansion arc, or integrated cutting forming.
As shown in Figures 4 and 5, the extended segment 21 of described sleeve pipe 2 has 90 degree of outward bending and keeps after restoring to the original state continuous
The characteristic split.This is because casing 2, in expansion bolt installation process, expansion arc 25 will cooperate with the coniform bottom of bolt 1
It generates deformation and expands outward, this requires casings 2 when producing selection, it is necessary to which selection has sufficiently ductile raw material.
Therefore, with the integrally formed extended segment 21 of casing 2 also inevitable toughness having the same, it may be implemented to bend and restore, and keep
Enough intensity is not broken.In actual use, extended segment 21 should be along 2 axis direction outward bending of vertical pipes, shape after bending
At bent angle 212, the first bending segment 211 of 212 rear end of bent angle is inserted into mounting hole, plays limit and control to the fitting depth of casing 2
Production is used；Second bending segment 213 of 212 front end of bent angle is bonded with installation wall or ground, the function rotated with limiting boot 2
Can, improve the installation quality and performance of expansion bolt.The bent angle 212 can go deep into according to the installation of casing 2, and setting is being prolonged
Stretch the junction of the intermediate any position of section 21 and extended segment 21 and sleeve sections 23.The design is without changing existing expanding screw
Bolt production technology, also without increasing production procedure, it is only necessary to change the cutting size or stamping die of existing production process middle sleeve
It can be realized, therefore will not additionally increase manufacturing cost relative to existing product.
As an alternative embodiment, the development length of the extended segment 21 should be greater than the wall thickness of casing 2, in order to
Form bent angle 212.The settable a variety of development lengths in extended segment 21, can be applied to expansion bolt with different-thickness guarantor
The wall or ground of warm layer or decorative layer are located in suitable depth in mounting hole to guarantee that casing 2 can according to need, thus
Ensure the front end expansion arc 25 of casing 2 in conjunction with the blank walls such as concrete or brick body.Preferably, the development length of the extended segment 21
It is 1 times, 1.5 times, 2 times, 2.5 times or 3 times of 2 radius of casing.
As an alternative embodiment, the width of the extended segment 21 may be configured as the 1/20 of 2 circumferential length of casing
To 1/6.The width size of 2 extended segment 21 of casing will affect the convenience of installation or removal expansion bolt.Specifically, working as width
When being arranged bigger than normal, the radian of extended segment 21 is larger, intensity is higher, and when installation is not easy to be bent into the dog-ear 212 to form 90 degree；
When width setting is less than normal, extended segment 21 is difficult to provide enough intensity, and when disassembly is possible to fracture it from dog-ear 212,
Or broken when pulling outward, so as to cause disassembly failure.Meanwhile extended segment 21 optimum width setting also with expanding screw
The specification of bolt is related, and when expansion bolt is relatively large in diameter, the thickness of casing 2 is also larger, can suitably reduce the width of extended segment 21
Degree；Conversely, then needing the width for suitably increasing extended segment 21.It, will be described referring to JB/ZQ4763-2006 expansion bolt national standard
21 width of extended segment is set as the standard values such as 1/20,1/15,1/12,1/10,1/8 or 1/6 of 2 circumferential length of casing, with difference
The expansion bolt of specification carries out Optimum Matching, is detailed in following table:
As an alternative embodiment, the bite 22 can be set to different shapes, but to ensure its width
Greater than the width of extended segment 21, in order to the clamping of the tools such as vice or nipper plier.As shown in a to f in Fig. 6, the bite
Shape can be one of rectangle, circle, ellipse, triangle, trapezoidal or diamond shape.Bite 22 of various shapes has
Different advantages: a is rectangle, consistent with the shape of plier, can get preferable clamping effect；B is round, in installation process not
Easily mounting surface is caused to wear or be damaged；C is ellipse, can be before not increasing extended segment total length relative to round b
It puts, bigger holding area is provided；D is triangle, and two base angles of triangle can be recessed with jaw in disassembly process
Slot combines, its apex angle is conducive to be tilted by tools such as flat mouth screwdrivers when obtaining preferably clamping effect, while dismantling
And it is separated with metope；E is isosceles trapezoid, and underlying two acute angles can also preferably be pressed from both sides in conjunction with the groove of jaw
Holding effect fruit, while its total length is less than the technical solution using triangle；F is diamond shape, and the apex angle of two sides can be in disassembly process
In in conjunction with the groove of jaw, its apex angle is conducive to utilize flat mouth screwdriver etc. when obtaining preferably clamping effect, while dismantling
Tool is tilted and is separated with mounting surface.
As an alternative embodiment, the extended segment 21 can be set to one or symmetrical multiple.Its purpose
It is, by the way that multiple extended segments 21 are arranged, control and restriction effect of the extended segment 21 to casing 2 in installation process can be enhanced.
Application method of the invention is as follows:
When installation, expansion bolt is inserted into first in the mounting hole of wall 6 until required depth；Then by hand or by work
Tool forms dog-ear (as shown in Figure 4) for 90 degree of extended segment outward bending of casing, is bonded the second bending segment with mounting surface；Finally
Tightening nut is fixed, and the effect after fixing is as shown in Figure 5.During tightening nut, the second bending segment can be to the depth of casing
Degree plays control and restriction effect, and limiting boot improves the installation quality and property of expansion bolt in mounting hole inner rotation
Energy.
When disassembly, nut is backed out first and taps bolt, separates bolt inner end with casing expandable section, then broken by hand
Or lever up the second bending segment by tools such as flat mouth screwdrivers, can it is very convenient by vice or nipper plier, firmly press from both sides
The bite of tight extended segment end, extracts mounting hole for casing outward.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, In
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (7)
1. a kind of easy-to-dismount expansion bolt, including bolt, casing and nut, described sleeve pipe includes sleeve sections and expansion arc,
It is characterized by: the outer end of described sleeve pipe is equipped with along the outwardly extending bent extended segment of casing generatrix direction, the extension
The development length of section is greater than the wall thickness of casing, and the width of the extended segment is the 1/20 to 1/6 of casing circumferential length；The extension
After section bending, the first bending segment for limiting casing fitting depth is formed and for limiting boot rotation and easy-to-dismount the
Two bending segments.
2. easy-to-dismount expansion bolt according to claim 1, it is characterised in that: the sleeve of the extended segment and casing
Section and the molding of expansion arc integrated punching, or integrated cutting forming.
3. easy-to-dismount expansion bolt according to claim 1, it is characterised in that: the outwardly extending end in extended segment
End is equipped with bite, and the width of the bite is greater than the width of extended segment.
4. easy-to-dismount expansion bolt according to claim 3, it is characterised in that: the shape of the bite is square
One of shape, circle, ellipse, triangle, trapezoidal or diamond shape.
5. easy-to-dismount expansion bolt according to claim 3, it is characterised in that: the extension of the bite and casing
Section, sleeve sections and the molding of expansion arc integrated punching, or integrated cutting forming.
6. according to claim 1 to easy-to-dismount expansion bolt described in any claim in 5, it is characterised in that: described
The extended segment of casing can keep not broken with 90 degree of outward bending and after restoring to the original state.
7. easy-to-dismount expansion bolt according to claim 6, it is characterised in that: the quantity of the extended segment is one
Or it is multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710952438.3A CN107575451B (en) | 2017-10-13 | 2017-10-13 | A kind of easy-to-dismount expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710952438.3A CN107575451B (en) | 2017-10-13 | 2017-10-13 | A kind of easy-to-dismount expansion bolt |
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| Publication Number | Publication Date |
|---|---|
| CN107575451A CN107575451A (en) | 2018-01-12 |
| CN107575451B true CN107575451B (en) | 2019-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710952438.3A Active CN107575451B (en) | 2017-10-13 | 2017-10-13 | A kind of easy-to-dismount expansion bolt |
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| CN (1) | CN107575451B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963426B (en) * | 2021-02-01 | 2022-06-17 | 中建三局集团有限公司 | Recyclable quick-release bolt for fixing template and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203926273U (en) * | 2014-04-03 | 2014-11-05 | 上海电机学院 | A kind of setscrew |
| CN104235141A (en) * | 2014-10-08 | 2014-12-24 | 张永兰 | Expansion bolt |
| CN206429502U (en) * | 2017-01-16 | 2017-08-22 | 朱彬鹏 | A kind of dismountable expansion bolt |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009155577A2 (en) * | 2008-06-19 | 2009-12-23 | Synthes Usa, Llc | Bone screw purchase augmentation implants, systems and techniques |
| US9309906B2 (en) * | 2013-11-19 | 2016-04-12 | Fu-Chuan Hsu | Self-drilling expansion fastener and method of forming same |
-
2017
- 2017-10-13 CN CN201710952438.3A patent/CN107575451B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203926273U (en) * | 2014-04-03 | 2014-11-05 | 上海电机学院 | A kind of setscrew |
| CN104235141A (en) * | 2014-10-08 | 2014-12-24 | 张永兰 | Expansion bolt |
| CN206429502U (en) * | 2017-01-16 | 2017-08-22 | 朱彬鹏 | A kind of dismountable expansion bolt |
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| Publication number | Publication date |
|---|---|
| CN107575451A (en) | 2018-01-12 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20191011 Address after: No.1, No.7 Middle School, ximailiantang village, Nan'an City, Quanzhou City, Fujian Province Applicant after: Chen Shaojun Address before: Room 303, No. 1, amber County, No. 20, Xiguan Road, North Street of Changping District City, Beijing City, Beijing Applicant before: Deng Weina |
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Effective date of registration: 20221206 Address after: 214261 Scientific Innovation Park on the West Bank of Taihu Lake, Zhoutie Town, Yixing City, Wuxi City, Jiangsu Province 23-101 Patentee after: Yixing Mingying Standard Parts Co.,Ltd. Address before: No. 1, No. 7 Middle School, Ximeiliantang Village, Nan'an City, Quanzhou City, Fujian Province, 362399 Patentee before: Chen Shaojun |
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