CN109026936A - A kind of expansion bolt - Google Patents
A kind of expansion bolt Download PDFInfo
- Publication number
- CN109026936A CN109026936A CN201811156631.7A CN201811156631A CN109026936A CN 109026936 A CN109026936 A CN 109026936A CN 201811156631 A CN201811156631 A CN 201811156631A CN 109026936 A CN109026936 A CN 109026936A
- Authority
- CN
- China
- Prior art keywords
- nut
- bolt
- folder
- expansion bolt
- centrum
- 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.)
- Granted
Links
- 230000008961 swelling Effects 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
Abstract
The present invention provides a kind of expansion bolt, the expansion bolt includes: bolt body, and one end of bolt body is formed with centrum；Casing, the casing are sheathed on the bolt body and wrap up on centrum, and casing includes multiple symmetrically arranged folders, and folder clamps centrum；Nut fixed piece, the nut fixed piece is arranged on bolt body, wherein, after expansion bolt is inserted into mounting hole, tightening nut fixing piece, so that bolt body direction into hole is protruded into, centrum opens the folder, so that folder expands outwardly at centrum and between bolt body and deep hole, folder is by expansion bolt swelling, installation is completed to fix, it has simplified structure, it is easily achieved, it is possible to prevente effectively from occurring being broken or loosening when being used for a long time or being frequent vibration by the fixed fixing piece of expansion bolt, it ensures using safe, and realize that disassembly & recycling utilizes expansion bolt repeatedly, to reduce construction and maintenance cost.
Description
Technical field
The present invention relates to building implement and connection equipment technical fields, specifically, being related to a kind of expansion bolt.
Background technique
Expansion bolt be pipeline support, hanger, bracket and equipment is fixed on the wall, on floor, used one on column
Kind special thread connector mainly includes dormant bolt, tube expansion, plain washer, spring pad and hex nut composition.The prior art
Under expansion bolt be to first pass through electric drill and reserve fixed position in object to drill out deep hole, bolt and tube expansion are then inserted into deep hole
Afterwards, the nut that is tightened can make bolt, tube expansion, swelling between object to be fixed, and then fixed object is locked.
The end of expansion bolt under the prior art, screw rod is in a circular table shape, in this kind of expansion bolt in use, by hole
Outer nut screws, then the part that screw rod is stretched out is tightened, and nut stretches screw rod to hole outside direction, and vertebra platform is by direction at this time
The power in direction in hole and be tightened up, then iron sheet cylinder is by spreading, finally that object to be fixed is fixed on the wall or on beam slab,
As described above, the round table-like end of expansion tube and screw rod is connected, make its interaction that can also achieve the purpose that expansion fastening.
However construction personnel has found this expanding screw under the prior art as described above in long-term construction and practice
Bolt is difficult to ensure the fixed effect of object, especially when object load is there are when amplitude or the biggish vibration of frequency, fixes
Effect is poor, phenomena such as loosening, being broken easily occurs, and there are biggish security risks.For example, when using in the prior art above-mentioned
When expansion bolt installing the work such as ceiling fan, windmill with the object shaken, longtime running is easy to appear fixed position and connects
The problems such as fitting falls off.On the other hand, under the prior art, when needing to remove by the fixed object of expansion bolt, after dismounting
The screw rod of expansion bolt still remains in the deep hole of fixed position, and there is also biggish for the screw rod that can not thoroughly remove, and retain
Security risk.Also, the expansion bolt and screw rod after removing can only be discarded, and considerably increase construction cost, cause working sources
Waste.
In view of this, should be improved to the prior art, to solve the above-mentioned technical problems in the prior art.
Summary of the invention
In order to solve the above-mentioned technical problem the present invention makes, the purpose is to provide one kind and can be avoided to pass through expansion
The fixing piece of bolt fixation occurs being broken or loosening when being used for a long time or being frequent vibration, ensures that use is safe, and
Realize that disassembly & recycling utilizes expansion bolt repeatedly, to reduce the expansion bolt of construction and maintenance cost.
To achieve the goals above, the present invention provides a kind of expansion bolt, the expansion bolt includes: bolt body,
The bolt body is long straight shape, and one end of the bolt body is formed with centrum, and the caliber size of the centrum bottom is greater than described
The diameter of bolt body；Casing, the casing are sheathed on the bolt body and wrap up on the centrum, and described sleeve pipe includes
The folder of multiple uniform equal part settings, the folder clamp the centrum；Nut fixed piece, the nut fixed piece are arranged in institute
It states on bolt body, wherein after the expansion bolt is inserted into mounting hole, the nut fixed piece is screwed, so that the bolt
Ontology direction into hole is protruded into, and the centrum opens the folder, so that the folder expands outwardly simultaneously at the centrum
Between the bolt body and deep hole, the expansion bolt swelling is completed installation and fixed by the folder.
Preferably, the nut fixed piece may include top nut and lower nut, and the top nut and the lower nut connect
It connects, wherein the end face center position of the lower nut can form recess wedge mouth, and the center of circle of the wedge mouth can be with the lower spiral shell
The projection of female center of circle in the horizontal direction is overlapped；The bottom surface of the top nut is formed with the corresponding wedge shape of the recess wedge mouth
Rib, the wedge ribs can extend towards the top nut bottom, when the top nut is connect with lower nut, the wedge ribs
It can be inserted in the wedge mouth, so that the top nut and lower nut stable connection.
It is further preferred that the center of circle of the wedge ribs can be with the projection of the center of circle of the top nut in the horizontal direction
It is not overlapped, so that the wedge ribs and the top nut are in eccentric structure.
Further preferably, plain washer has can be set in the bottom of the lower nut.
Preferably, the top of each folder could be formed with segment convex body, wherein when the expansion bolt is in non-
When under use state, the folder, which can be wrapped up in, to be set the centrum and clamps the centrum, is used when the expansion bolt is in
When state, the folder can be opened and the folder is expanded outwardly by the centrum, and the segment convex body of the folder can
With by the expansion bolt and deep hole swelling.
Preferably, the bolt body surface could be formed with threaded portion, and the top nut can be formed in lower nut
There is internal screw thread corresponding with threaded portion, could be formed with screw thread corresponding with the threaded portion in described sleeve pipe.
As described above with practice it is found that a kind of expansion bolt of the present invention, passes through the spiral shell in expansion bolt
Bolt ontology front end is arranged casing, also, casing includes multiple folders, in this way, expansion bolt in the non-use state when, folder will
The centrum of bolt body front end, which is wrapped up in, to be set in the inner, when under use state, by expansion bolt and casing insertion in advance in installation position
It sets in the deep hole being drilled with, the centrum that screwing bolts can make bolt body front end be formed opens the folder, shape on folder
At there is segment convex body, folder is opened rear segment convex body and is expanded outwardly to be filled between bolt body and deep hole, by bolt
Ontology swelling is completed to fix；It on the other hand, further include top nut and lower nut, lower nut end face center position is formed with recess
Wedge mouth, top nut bottom center position are formed with wedge ribs, are inserted into recess wedge mouth by wedge ribs and make top nut and lower nut
Stable connection, meanwhile, recess wedge mouth is overlapped with the center of circle of lower nut, and wedge ribs and top nut are in eccentric structure, further to make
Obtain the stable connection of top nut and lower nut；When needing to remove object, it is only necessary to unclamp top nut and lower nut, and by bolt
Ontology extraction, so that it may realize and remove work, and the expansion bolt after dismounting still can recycle.In conclusion this
The invention expansion bolt has simplified structure, it is easy to accomplish, it is possible to prevente effectively from the fixation fixed by expansion bolt
Part occurs being broken or loosening when being used for a long time or being frequent vibration, ensures that use is safe, and realize that expansion bolt is anti-
Multiple disassembly & recycling utilizes, to reduce construction and maintenance cost.
Detailed description of the invention
Fig. 1 is cross-sectional view, shows cuing open under expansion bolt non-working condition described in one embodiment of the present of invention
Depending on structure；
Fig. 2 is cross-sectional view, shows the sectional structure of expansion bolt shown in FIG. 1 in a state of use.
Specific embodiment
The embodiment of expansion bolt of the present invention described below with reference to the accompanying drawings.Those skilled in the art
It will recognize, it without departing from the spirit and scope of the present invention, can be with a variety of different modes to described
Embodiment is modified.Therefore, attached drawing and description are regarded as illustrative in nature, rather than the protection for limiting claim
Range.In addition, in the present specification, attached drawing is drawn not in scale, and identical appended drawing reference indicates identical part.
Fig. 1 is cross-sectional view, shows cuing open under expansion bolt non-working condition described in one embodiment of the present of invention
Depending on structure.As shown in Figure 1, the expansion bolt as described in the examples of the invention includes bolt body 1, it is arranged and bolt body
Casing 2 and nut fixed piece on 1.
Specifically, checking Fig. 1, bolt body 1 is long straight shape, and one end forms a centrum 11, the bottom surface of the centrum 11
Caliber size is greater than the diameter of bolt body 1.1 surface of bolt body is formed with threaded portion 12, equally, be formed on casing 2 with
The consistent screw thread in threaded portion 12 is also formed with the internal screw thread matched with threaded portion 12 on nut fixed piece, passes through tightening nut
Bolt body 1 and casing 2 can be fixed by fixing piece.
Casing 2 is sheathed on bolt body 1, and, casing 2 is wrapped up on the centrum 11, and casing 2 includes multiple symmetrical
Folder 21, in this embodiment of the invention, including four symmetrical folders 21,21 end of folder are formed with segment convex body 22,
When expansion bolt is under non-working condition, which, which wraps up in, sets centrum 11 and clamps centrum 11, makes when expansion bolt is in
When with state, folder is opened and folder 21 is expanded outwardly by centrum 11, the segment convex body 22 of folder 21 by expansion bolt with
Deep hole swelling.As described above, the bottom diameter size of centrum 11 is greater than the diameter of bolt body 1, in this way, making when 21 quilt of folder
It opens after expanding outwardly, can be set by 11 bottom surface card of centrum, to realize fixed function.
Nut fixed piece includes top nut 3, lower nut 4 and the plain washer 5 for being set to 4 bottom of lower nut, as shown,
The end face center position of lower nut 4 is formed with the wedge mouth 41 of recess, and the center of circle of the wedge mouth 41 and the center of circle of lower nut 4 are in level side
Upward projection is overlapped, i.e. the center of circle of wedge mouth 41 and lower nut 4 is concentric, meanwhile, the bottom surface of top nut 3 is formed with the wedge of recess
41 corresponding wedge ribs 31 of mouth, wedge ribs 31 extend towards 3 bottom of top nut, and the wedge mouth of the recess of lower nut 4 can be inserted
In 41, in this way, when top nut 3 and lower nut 4 are connected and fixed, wedge ribs 31 are inserted into wedge mouth 41, to realize top nut 3 under
4 stable connection of nut.In addition, in this embodiment of the invention, the center of circle of wedge ribs 31 and the center of circle of top nut 3 are in level side
Upward projection can not be overlapped, i.e., so that wedge ribs 31 and top nut 3 are in eccentric structure, with further enhance top nut 3 with
Stabilized structure when lower nut 4 connects.
Fig. 2 is cross-sectional view, shows the sectional structure of expansion bolt shown in FIG. 1 in a state of use.As shown in Fig. 2,
When expansion bolt described in one embodiment of the present of invention is used to install fixed ceiling fan, the diameter of ceiling fan is 2 meters, and selection length is
33 centimetres of M28 bolt, bottom centrum length are 2.5 centimetres, and 11 basal diameter of centrum is 25 millimeters.3 milli of wall thickness of casing
Rice, length are 26 centimetres.Including four folders 21, each folder 21 is formed with segment convex body 22.When installation, in advance using brill
Hole equipment bores 26 centimetres of deep holes of society in installation site, then carries out reaming to mounting hole using broaching equipment, so that aperture is 5 lis
Meter, expansion bolt is inserted into deep hole after borehole cleaning, bolt body 1 is rotated and simultaneously makes the centrum 11 of its bottom by the folder on casing 2
Part 21 opens, and the segment convex body 22 on folder 21 is expanded outwardly and limited by 11 bottom surface of centrum, in this way, making folder that vestibule is swollen
Tightly.Then plain washer 5, lower nut 4 and top nut 3 are successively installed, under rotating nuts are inserted into the wedge ribs 31 of top nut 3
In the wedge mouth 41 of nut 4, so that top nut 3 and lower nut 4 fit closely, installment work is completed after fix stably.
As described above with practice it is found that a kind of expansion bolt of the present invention, passes through the spiral shell in expansion bolt
Bolt ontology front end is arranged casing, also, casing includes multiple folders, in this way, expansion bolt in the non-use state when, folder will
The centrum of bolt body front end, which is wrapped up in, to be set in the inner, when under use state, by expansion bolt and casing insertion in advance in installation position
It sets in the deep hole being drilled with, the centrum that screwing bolts can make bolt body front end be formed opens the folder, shape on folder
At there is segment convex body, folder is opened rear segment convex body and is expanded outwardly to be filled between bolt body and deep hole, by bolt
Ontology swelling is completed to fix；It on the other hand, further include top nut and lower nut, lower nut end face center position is formed with recess
Wedge mouth, top nut bottom center position are formed with wedge ribs, are inserted into recess wedge mouth by wedge ribs and make top nut and lower nut
Stable connection, meanwhile, recess wedge mouth is overlapped with the center of circle of lower nut, and wedge ribs and top nut are in eccentric structure, further to make
Obtain the stable connection of top nut and lower nut；When needing to remove object, it is only necessary to unclamp top nut and lower nut, and by bolt
Ontology extraction, so that it may realize and remove work, and the expansion bolt after dismounting still can recycle.In conclusion this
The invention expansion bolt has simplified structure, it is easy to accomplish, it is possible to prevente effectively from the fixation fixed by expansion bolt
Part occurs being broken or loosening when being used for a long time or being frequent vibration, ensures that use is safe, and realize that expansion bolt is anti-
Multiple disassembly & recycling utilizes, to reduce construction and maintenance cost.
Describe expansion bolt according to the present invention in an illustrative manner above with reference to attached drawing.But this field skill
Art personnel should be appreciated that the expansion bolt proposed for aforementioned present invention, can also be on the basis for not departing from the content of present invention
On make various improvement.Therefore, protection scope of the present invention should be determined by the content of appended claims.
Claims (6)
1. a kind of expansion bolt, which is characterized in that the expansion bolt includes:
Bolt body, the bolt body are long straight shape, and one end of the bolt body is formed with centrum, the bore of the centrum bottom
Size is greater than the diameter of the bolt body；
Casing, the casing are sheathed on the bolt body and wrap up on the centrum, and described sleeve pipe includes multiple symmetrically setting
The folder set, the folder clamp the centrum；
Nut fixed piece, the nut fixed piece are arranged on the bolt body, wherein
After the expansion bolt is inserted into mounting hole, the nut fixed piece is screwed, so that bolt body direction into hole
It protrudes into, the centrum opens the folder, so that the folder expands outwardly at the centrum and is located at the bolt sheet
Between body and deep hole, the expansion bolt swelling is completed installation and fixed by the folder.
2. expansion bolt as described in claim 1, which is characterized in that the nut fixed piece includes top nut and lower nut,
The top nut is connect with the lower nut, wherein
The end face center position of the lower nut forms recess wedge mouth, and the center of circle of the wedge mouth and the center of circle of the lower nut are in water
Square upward projection is overlapped；
The bottom surface of the top nut is formed with the corresponding wedge ribs of the recess wedge mouth, and the wedge ribs are towards the top nut bottom
Portion extends, and when the top nut is connect with lower nut, the wedge ribs are inserted into the wedge mouth, so that the top nut is under
Nut stable connection.
3. expansion bolt as claimed in claim 2, which is characterized in that the center of circle in the center of circle of the wedge ribs and the top nut
Projection in the horizontal direction is not overlapped, so that the wedge ribs and the top nut are in eccentric structure.
4. expansion bolt as claimed in claim 2, which is characterized in that the bottom of the lower nut is provided with plain washer.
5. expansion bolt as described in claim 1, which is characterized in that the top of each folder is formed with segment convex body,
Wherein,
When the expansion bolt is under non-working condition, the folder, which is wrapped up in, to be set the centrum and clamps the centrum, when
When the expansion bolt is in use state, the folder is opened and the folder is expanded outwardly by the centrum, described
The segment convex body of folder is by the expansion bolt and deep hole swelling.
6. expansion bolt as described in claim 1, which is characterized in that the bolt body surface is formed with threaded portion, it is described on
It is formed with internal screw thread corresponding with threaded portion in nut and lower nut, silk corresponding with the threaded portion is formed in described sleeve pipe
Button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811156631.7A CN109026936B (en) | 2018-09-30 | 2018-09-30 | Expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811156631.7A CN109026936B (en) | 2018-09-30 | 2018-09-30 | Expansion bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109026936A true CN109026936A (en) | 2018-12-18 |
| CN109026936B CN109026936B (en) | 2020-09-22 |
Family
ID=64615792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811156631.7A Active CN109026936B (en) | 2018-09-30 | 2018-09-30 | Expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109026936B (en) |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE833254A (en) * | 1975-09-10 | 1975-12-31 | PRE-EXPANDED PLASTIC ANCHOR, INTENDED FOR FIXING ON THIN WALLS, PLASTER PANELS, COMPRESSED MATERIALS | |
| GB2147384A (en) * | 1983-09-30 | 1985-05-09 | Hilti Ag | Expansible anchor plug |
| CN2395077Y (en) * | 1998-04-24 | 2000-09-06 | 沈天仁 | Anti-loose nut |
| CN2440968Y (en) * | 2000-09-27 | 2001-08-01 | 戚进 | Adjustable screw rod style expansion screw |
| CN2537850Y (en) * | 2002-04-25 | 2003-02-26 | 石建峰 | High strength fixing expansion connection fastener |
| CN2572108Y (en) * | 2002-09-26 | 2003-09-10 | 天津理工学院 | Double locknut utilizing taper surface |
| CN2596094Y (en) * | 2003-01-13 | 2003-12-31 | 宋家君 | Repeatedlly used expansion bolt |
| CN1587725A (en) * | 2004-08-02 | 2005-03-02 | 马庆友 | Plastic clamp with expansion end |
| CN1587724A (en) * | 2004-08-02 | 2005-03-02 | 马庆友 | Hardware piece with expansion end and its matching spanners |
| CN2854170Y (en) * | 2005-11-08 | 2007-01-03 | 刘宇 | Limit expansion anchor bolt |
| CN200985940Y (en) * | 2006-12-14 | 2007-12-05 | 江苏江成冶金设备制造有限公司 | Screwed connection anti-loose fastener |
| CN201925291U (en) * | 2010-12-14 | 2011-08-10 | 黄献钲 | Improved wall nail structure |
| CN201953769U (en) * | 2011-03-11 | 2011-08-31 | 惠州智科实业有限公司 | Fixing screw structure for heat radiator |
| CN202152783U (en) * | 2011-07-30 | 2012-02-29 | 王英 | Combined expansion screw |
| CN102829052A (en) * | 2012-09-20 | 2012-12-19 | 力帆实业(集团)股份有限公司 | Fastening connecting component of vehicle plastic part |
| CN103322003A (en) * | 2013-07-09 | 2013-09-25 | 吴玲媛 | Fastening connector |
| CN204061439U (en) * | 2014-09-05 | 2014-12-31 | 卢明 | Without screw fixing device |
| CN106763049A (en) * | 2016-12-31 | 2017-05-31 | 中国工程物理研究院激光聚变研究中心 | Push away swollen drawing type flexible fastening connector |
| CN107304780A (en) * | 2016-04-25 | 2017-10-31 | 李奇 | Expansion fastening device |
-
2018
- 2018-09-30 CN CN201811156631.7A patent/CN109026936B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE833254A (en) * | 1975-09-10 | 1975-12-31 | PRE-EXPANDED PLASTIC ANCHOR, INTENDED FOR FIXING ON THIN WALLS, PLASTER PANELS, COMPRESSED MATERIALS | |
| GB2147384A (en) * | 1983-09-30 | 1985-05-09 | Hilti Ag | Expansible anchor plug |
| CN2395077Y (en) * | 1998-04-24 | 2000-09-06 | 沈天仁 | Anti-loose nut |
| CN2440968Y (en) * | 2000-09-27 | 2001-08-01 | 戚进 | Adjustable screw rod style expansion screw |
| CN2537850Y (en) * | 2002-04-25 | 2003-02-26 | 石建峰 | High strength fixing expansion connection fastener |
| CN2572108Y (en) * | 2002-09-26 | 2003-09-10 | 天津理工学院 | Double locknut utilizing taper surface |
| CN2596094Y (en) * | 2003-01-13 | 2003-12-31 | 宋家君 | Repeatedlly used expansion bolt |
| CN1587724A (en) * | 2004-08-02 | 2005-03-02 | 马庆友 | Hardware piece with expansion end and its matching spanners |
| CN1587725A (en) * | 2004-08-02 | 2005-03-02 | 马庆友 | Plastic clamp with expansion end |
| CN2854170Y (en) * | 2005-11-08 | 2007-01-03 | 刘宇 | Limit expansion anchor bolt |
| CN200985940Y (en) * | 2006-12-14 | 2007-12-05 | 江苏江成冶金设备制造有限公司 | Screwed connection anti-loose fastener |
| CN201925291U (en) * | 2010-12-14 | 2011-08-10 | 黄献钲 | Improved wall nail structure |
| CN201953769U (en) * | 2011-03-11 | 2011-08-31 | 惠州智科实业有限公司 | Fixing screw structure for heat radiator |
| CN202152783U (en) * | 2011-07-30 | 2012-02-29 | 王英 | Combined expansion screw |
| CN102829052A (en) * | 2012-09-20 | 2012-12-19 | 力帆实业(集团)股份有限公司 | Fastening connecting component of vehicle plastic part |
| CN103322003A (en) * | 2013-07-09 | 2013-09-25 | 吴玲媛 | Fastening connector |
| CN204061439U (en) * | 2014-09-05 | 2014-12-31 | 卢明 | Without screw fixing device |
| CN107304780A (en) * | 2016-04-25 | 2017-10-31 | 李奇 | Expansion fastening device |
| CN106763049A (en) * | 2016-12-31 | 2017-05-31 | 中国工程物理研究院激光聚变研究中心 | Push away swollen drawing type flexible fastening connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109026936B (en) | 2020-09-22 |
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