CN112780655B - Positioning buckle push-and-turn type unilateral bolt fastener - Google Patents
Positioning buckle push-and-turn type unilateral bolt fastener Download PDFInfo
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- CN112780655B CN112780655B CN202110069402.7A CN202110069402A CN112780655B CN 112780655 B CN112780655 B CN 112780655B CN 202110069402 A CN202110069402 A CN 202110069402A CN 112780655 B CN112780655 B CN 112780655B
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- 230000006978 adaptation Effects 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 11
- 230000007306 turnover Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000011900 installation process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
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- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/005—Set screws; Locking means therefor
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- 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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
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- 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
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a positioning buckle push-turn type unilateral bolt fastener which comprises a round-head bolt, a positioning buckle push-turn type gasket assembly, a sleeve assembly, a washer and a nut, wherein the positioning buckle push-turn type gasket assembly, the sleeve assembly, the washer and the nut are sequentially sleeved on the round-head bolt along the axial direction, the positioning buckle push-turn type gasket assembly comprises a gasket matching body and a plurality of positioning buckle push-turn type gaskets uniformly distributed along the circumferential direction of the gasket matching body, an arc-shaped bulge is arranged on each positioning buckle push-turn type gasket, each sleeve assembly comprises a sleeve main body and a plurality of sleeve gaskets uniformly distributed along the circumferential direction of the sleeve main body, an arc-shaped groove matched with the arc-shaped bulge is arranged on each sleeve gasket, and when the fastening is carried out, the arc-shaped bulge and the arc-shaped groove are clamped and synchronously turned outwards. The fastener can realize quick and accurate unilateral fixed connection through the overturning motion of the plurality of positioning buckles pushing and rotating type gaskets and the sleeve gasket, and the mounting process is simple and reliable, convenient to detach, reusable, better in mechanical property and capable of bearing larger bearing capacity.
Description
Technical Field
The invention relates to the technical field of unilateral bolts, in particular to a positioning buckle push-and-turn type unilateral bolt fastener.
Background
Currently, in the fields of civil engineering and construction engineering and mechanical installation, the installation demand for connecting and fastening structural members is increasing. However, in the case of bolts which are generally used at present, when a fastening operation is performed on a member, a worker needs to perform the operation on both sides of the member at the same time, that is, insert a bolt with a nut on one side and then tighten the nut with a tool on the other side. The connecting and fastening method has simple structure, convenient operation and good bearing capacity, but is only suitable for open-section members, and the common bolt and nut connecting and fastening method cannot be used in special occasions, such as connecting and fastening closed-section members or members which are inconvenient to operate on the other side. Such as: in steel pipe structures and steel pipe concrete structures, beam column connection nodes cannot be fastened and installed by the common bolt-nut connection fastening method because steel pipe columns are closed sections and cannot be operated on two sides and can only be connected and installed on one side. And at present, no corresponding single-side bolt product exists in the domestic market, and the published related patents often weaken the bolt rod too much to make the mechanical performance not ideal, or the installation is inconvenient: similar products are already available in foreign markets. However, the price is high, the products are difficult to be widely adopted in China, the products are difficult to apply large pretension force to the bolts in the installation stage to form a friction type bolt connecting joint, the comprehensive mechanical property of the load is not ideal, and the application of the products in the building structure earthquake-resistant design is greatly limited.
Disclosure of Invention
The invention aims to provide a positioning buckle push-and-turn type unilateral bolt fastener which is convenient to install and high in bearing capacity.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a positioning buckle push-turn type unilateral bolt fastener comprises a round-head bolt, a positioning buckle push-turn type gasket assembly, a sleeve assembly, a washer and a nut which are sequentially sleeved on the round-head bolt along the axial direction,
the utility model discloses a sleeve gasket, including the sleeve gasket, the sleeve gasket is connected with the rotation of sleeve main part, the location buckle pushes away commentaries on classics gasket subassembly including being the annular gasket cooperation body of circle and a plurality of location buckle along the even laying of gasket cooperation body circumference and pushes away commentaries on classics gasket, the location buckle pushes away commentaries on classics gasket and is connected with the rotation of gasket cooperation body, the location buckle pushes away and is equipped with the arc arch on the commentaries on classics gasket, the sleeve subassembly includes sleeve main part and a plurality of sleeve gaskets along the even laying of sleeve main part circumference, the sleeve gasket rotates with sleeve main part to be connected, be equipped with the arc recess with the protruding looks adaptation of arc on the sleeve gasket, during the fastening, the location buckle pushes away the unsmooth card of arc recess on the commentaries on classics gasket and the upset of arc recess on classics and closes synchronous outside upset.
Preferably, the section of the tail end of the positioning buckle pushing and rotating type gasket is semicircular, the upper part of the front end of the positioning buckle pushing and rotating type gasket is curved downwards, the arc-shaped bulge is positioned at the edge of the front end of the positioning buckle pushing and rotating type gasket, and the arc-shaped curvature is the same as that of the front end of the positioning buckle pushing and rotating type gasket.
Preferably, a plurality of gasket slots matched with the tail ends of the positioning buckle push-and-turn type gaskets are uniformly formed in the gasket matching body along the circumferential direction of the edge, and the positioning buckle push-and-turn type gaskets can turn outwards in the gasket slots.
Preferably, the section of the tail end of the sleeve gasket is semicircular, the upper part of the front end of the sleeve is curved downwards in an arc shape, the arc-shaped groove is positioned at the front end of the sleeve gasket, and the arc curvature is the same as that of the front end of the sleeve gasket.
Preferably, a plurality of sleeve slots matched with the tail ends of the sleeve gaskets are uniformly formed in the sleeve main body along the circumferential direction of the edge, and the sleeve gaskets can turn outwards in the sleeve slots.
Preferably, the positioning buckle is provided with a first gasket hole in a symmetrical mode on two sides of the tail end of the push-and-turn type gasket, a second gasket hole in a symmetrical mode on two sides of the tail end of the sleeve gasket, and spring rotating devices used for rotating and connecting the first gasket hole and the second gasket hole are respectively arranged in the first gasket hole and the second gasket hole.
Preferably, the gasket fitting body and the sleeve main body have the same inner diameter and outer diameter, and the positioning buckle push-turn type gasket and the sleeve gasket have the same thickness.
Compared with the prior art, the invention has the following beneficial effects:
1. the concave-convex clamping structure, the positioning buckle push-and-turn type gasket, the gasket matching body, the sleeve gasket and the sleeve main body which are in special shapes are designed. The sleeve is also provided with a sleeve gasket, so that the defect that the thickness of the positioning buckle push-and-turn type gasket is insufficient is overcome, and the stress is more reliable. And the concave-convex clamping structure can ensure that the positioning buckle push-and-turn type gasket can be smoothly unfolded and does not generate relative displacement when being installed. The spring device between the positioning buckle push-and-turn type gasket and the gasket matching body ensures that the positioning buckle push-and-turn type gasket can be correctly turned over in work, so that the mounting failure is avoided; the positioning buckle pushes the rotating type gasket and the gasket matching body to be connected into a whole through the arc-shaped head and the clamping groove, the sleeve gasket and the sleeve main body are also connected through a similar device, the structure is compact, the problem of bolt installation failure under certain working conditions is solved, the installation process is simple and reliable, the disassembly is convenient, and the repeated use is realized.
2. The locating buckle push-and-turn type gasket is connected with the gasket matching body before installation, compared with the common gasket, the installation process of the common gasket is omitted, and after installation is completed, the inner end face of the round head bolt head is simultaneously in contact with the locating buckle push-and-turn type gaskets which are flat pads, and multiple points are stressed. The bearing is even, and mechanical properties is better, can bear great bearing capacity.
3. The whole structure is composed of assembly type components, the structure is simple and compact, and the assembly efficiency can be improved.
Drawings
FIG. 1 is a schematic view of the overall structure of a positioning buckle push-turn type unilateral bolt fastener of the present invention;
FIG. 2 is a schematic view of a positioning buckle push-turn gasket assembly according to the present invention;
FIG. 3 is a schematic view of the sleeve assembly of the present invention;
FIG. 4 is a schematic view of a configuration of the positioning buckle push-turn gasket assembly and the sleeve assembly of the present invention, wherein the positioning buckle push-turn gasket and the sleeve gasket are turned over in the same direction during operation;
FIG. 5 is a schematic view of a positioning buckle push-turn gasket according to the present invention;
FIG. 6 is a schematic structural view of a sleeve gasket according to the present invention;
FIG. 7 is a schematic view of a positioning buckle push-turn type single-sided bolt fastener installation process of the present invention;
FIG. 8 is a schematic view of the positioning buckle push-turn type single-sided bolt fastener of the present invention after installation;
in the figure: the bolt comprises a 1-round head bolt, a 2-positioning buckle push-and-turn type gasket assembly, a 2 a-positioning buckle push-and-turn type gasket, a 2 b-gasket matching body, a 2 c-gasket groove, a 2 d-positioning buckle push-and-turn type gasket tail end, a 2 e-arc-shaped bulge, a 2 f-gasket hole I, a 3-sleeve assembly, a 3 a-sleeve gasket, a 3 b-sleeve main body, a 3 c-sleeve groove, a 3 d-sleeve gasket tail end, a 3 e-arc-shaped groove, a 3 f-gasket hole II, a 4-gasket, a 5-nut, a 6-connecting piece and a 7-bolt rod.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in fig. 1 to 8, the present invention provides a positioning buckle push-turn type unilateral bolt fastener, which includes a round-head bolt 1, and a positioning buckle push-turn type washer assembly 2, a sleeve assembly 3, a washer 4 and a nut 5 that are sequentially sleeved on the round-head bolt 1 along an axial direction.
As shown in fig. 2, fig. 4 and fig. 5, the positioning buckle push-and-turn type gasket assembly 2 includes a gasket fitting body 2b in a circular ring shape and a plurality of positioning buckles push-and-turn type gaskets 2a evenly arranged along the circumferential direction of the gasket fitting body 2b, an arc-shaped protrusion 2e is arranged on the positioning buckle push-and-turn type gasket 2a, and the arc-shaped protrusion 2e faces one side of the circle center of the gasket fitting body 2 b.
The cross-section that the location buckle pushed away commentaries on classics formula gasket tail end 2d is semi-circular, the location buckle pushes away the front end upper portion of commentaries on classics formula gasket 2a and is the arc downwarping, the protruding 2e of arc is located the location buckle and pushes away the front end edge of commentaries on classics formula gasket 2a, and the arc camber of the protruding 2e of arc is the same with the arc camber that the location buckle pushed away commentaries on classics formula gasket 2a front end.
The gasket matching body 2b is uniformly provided with a plurality of gasket slots 2c matched with the positioning buckle push-and-turn type gasket tail end 2d along the circumferential direction, the slotted gasket matching body 2b is in a ring gear shape, and the positioning buckle push-and-turn type gasket 2a can turn over outwards in the gasket slots 2c to turn over 90 degrees at most. When the positioning buckle push-and-turn type gasket 2a and the gasket matching body 2b are turned outwards by 90 degrees, the positioning buckle push-and-turn type gasket and the gasket matching body are positioned in the same plane, as shown in fig. 2.
The two sides of the positioning buckle push-and-turn type gasket tail end 2d are symmetrically provided with a gasket hole I2 f, and a spring rotating device used for realizing the rotation connection of the positioning buckle push-and-turn type gasket 2a and the gasket matching body 2b is arranged in the gasket hole I2 f.
As shown in fig. 2, 4 and 6, the sleeve assembly 3 includes a sleeve main body 3b and a plurality of sleeve spacers 3a uniformly arranged along the circumference of the sleeve main body 3b, an arc-shaped groove 3e adapted to the arc-shaped protrusion 2e is formed in the sleeve spacer 3a, and the arc-shaped groove 3e faces one side of the center of the sleeve main body 3 b. The sleeve component can increase the static friction force of the whole fastener, and the installation firmness is improved.
The section of sleeve gasket tail end 3d is semicircular, sleeve gasket 3 a's front end upper portion is the arc downwarping, arc recess 3f is located sleeve gasket 3 a's front end, and the arc camber of arc recess 3f is the same with the arc camber of sleeve gasket 3a front end.
A plurality of sleeve slots 3c matched with the tail ends 3d of the sleeve gaskets are uniformly formed in the sleeve main body 3b along the circumferential direction of the edge, and the sleeve gaskets 3a can turn outwards in the sleeve slots 3c to turn 90 degrees at most.
Two gasket holes 3f are symmetrically formed in two sides of the tail end 3d of the sleeve gasket, and spring rotating devices used for achieving the purpose that the sleeve gasket 3a is rotatably connected with the sleeve main body 3b are arranged in the two gasket holes 3 f.
At the grooving position, the positioning buckle pushes the rotary type gasket 2a to be connected with the gasket matching body 2b through a spring rotating device, and the sleeve gasket 3a is connected with the sleeve main body 3b through the spring rotating device. Due to the blocking effect of the space position, the positioning buckle push-and-turn type gasket 2a and the sleeve gasket 3a can freely rotate within the range of 90 degrees under the action of the spring rotating device.
The gasket matching body 2b and the sleeve main body 3b are identical in inner diameter and outer diameter, the positioning buckle pushing and rotating type gasket 2a and the sleeve gasket 3a are identical in thickness, and it can be guaranteed that when the positioning buckle pushing and rotating type gasket 2a and the sleeve gasket 3a are clamped, the lower portion of the positioning buckle pushing and rotating type gasket 2a and the lower portion of the sleeve gasket 3a are on the same plane, as shown in fig. 4.
When fastening, the positioning buckle pushes the arc-shaped bulge 2e on the rotary gasket 2a to be buckled with the arc-shaped groove 3e on the sleeve gasket 3a in a concave-convex mode and turn over outwards synchronously. Arc-shaped protrusion 2e and arc-shaped groove 3e can be well laminated in the overturning process, so that positioning buckle push-and-turn type gasket 2a and sleeve gasket 3a cannot generate position deviation in the rotating process. The positioning buckle pushes the rotating type gasket 2a and the sleeve gasket 3a to turn over outwards under the action of respective springs, so that the positioning buckle pushes the rotating type gasket 2a and the gasket matching body 2b to rotate relatively and the sleeve gasket 3a and the sleeve main body 3b to rotate relatively, and the outer diameter of the whole positioning buckle pushes the rotating type gasket assembly to be increased.
The fastener is used for fastening and mounting the connecting piece 6, the connecting piece mounting hole is formed in the connecting piece 6, and the outer diameters of the round-head bolt head, the gasket matching body 2b and the sleeve main body 3b are smaller than or equal to the inner diameter of the connecting piece mounting hole.
The fastener is used for carrying out the unilateral installation of the connecting piece in the following specific process:
1) sequentially sleeving the positioning buckle push-and-turn type gasket assembly 2, the sleeve assembly 3, the washer 4 and the nut 5 on the bolt rod 7;
2) the round-head bolt 1 is inserted into the mounting hole of the connecting piece 6 until the whole sleeve gasket 3a passes through the mounting hole of the connecting piece 6;
3) the bolt rod 7 is pulled back, the sleeve component 3 is propped against the bolt rod, and the positioning buckle pushes the rotating gasket 2a and the sleeve gasket 3a to synchronously turn outwards through the concave-convex clamping guiding function of the arc-shaped protrusion 2e and the arc-shaped groove 3 e;
4) after the positioning buckle push-and-turn type gasket 2a and the sleeve gasket 3a are turned over, the outer diameter of the positioning buckle push-and-turn type gasket is larger than the inner diameter of the mounting hole of the connecting piece 6, the bolt rod 7 is continuously pulled back, so that the positioning buckle push-and-turn type gasket 2a and the sleeve gasket 3a continuously rotate under the clamping interaction of the positioning buckle push-and-turn type gasket and the sleeve gasket until the positioning buckle push-and-turn type gasket and the sleeve gasket are completely flat, namely all the positioning buckle push-and-turn type gaskets 2a and the gasket matching body 2b are positioned on the same horizontal plane and tightly attached to the surface of the connecting piece 6;
5) and finally, screwing the nut 5 to achieve a certain pretightening force, namely completing the installation work of the whole unilateral bolt fastener.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (7)
1. The utility model provides a location buckle pushes away commentaries on classics unilateral bolt fastener, its characterized in that, this fastener includes button head bolt (1) and fixes a position buckle along the axial on button head bolt (1) in proper order and pushes away commentaries on classics gasket subassembly (2), sleeve subassembly (3), packing ring (4) and nut (5), location buckle pushes away commentaries on classics gasket subassembly (2) including being the annular gasket cooperation body (2b) of circle and a plurality of location buckle along evenly laying of gasket cooperation body (2b) circumference and pushes away commentaries on classics gasket (2a), location buckle pushes away commentaries on classics gasket (2a) and is connected with gasket cooperation body (2b) rotation, be equipped with arc arch (2e) on location buckle push away commentaries on classics gasket (2a), sleeve subassembly (3) include sleeve main part (3b) and a plurality of sleeve gasket (3a) that evenly lay along sleeve main part (3b) circumference, sleeve gasket (3a) are connected with sleeve main part (3b) rotation, be equipped with arc recess (3e) with arc arch (2e) looks adaptation on sleeve gasket (3a), during the fastening, the location buckle pushes away arc arch (2e) on commentaries on classics formula gasket (2a) and arc recess (3e) unsmooth joint on sleeve gasket (3a) and is outwards overturned in step.
2. The fastener according to claim 1, wherein the section of the tail end (2d) of the washer is semicircular, the upper part of the front end of the washer (2a) is curved downward, the arc-shaped protrusion (2e) is located at the edge of the front end of the washer (2a), and the arc-shaped curvature of the arc-shaped protrusion (2e) is the same as the arc-shaped curvature of the front end of the washer (2 a).
3. The single-sided bolt fastener of claim 2, characterized in that the gasket fitting body (2b) is provided with a plurality of gasket slots (2c) along the edge circumference direction and adapted to the tail end (2d) of the positioning buckle push-turn gasket, and the positioning buckle push-turn gasket (2a) can be turned outwards in the gasket slots (2 c).
4. The single-sided bolt fastener of claim 1, wherein the section of the tail end (3d) of the sleeve gasket is semicircular, the upper part of the front end of the sleeve gasket (3a) is curved downward, the arc-shaped groove (3e) is located at the front end of the sleeve gasket (3a), and the arc-shaped curvature of the arc-shaped groove (3e) is the same as that of the front end of the sleeve gasket (3 a).
5. The single-sided bolt fastener of claim 4, characterized in that the sleeve body (3b) is provided with a plurality of sleeve slots (3c) along the edge circumference to match the tail end (3d) of the sleeve gasket, and the sleeve gasket (3a) can be turned outwards in the sleeve slots (3 c).
6. The fastener according to claim 1, wherein the two sides of the tail end (2d) of the positioning buckle push-turn type gasket are symmetrically provided with a first gasket hole (2f), the two sides of the tail end (3d) of the sleeve gasket are symmetrically provided with a second gasket hole (3f), and the first gasket hole (2f) and the second gasket hole (3f) are respectively provided with a spring rotating device for rotary connection.
7. The single-sided bolt fastener of claim 1, wherein the gasket fitting body (2b) and the sleeve body (3b) have the same inner and outer diameters, and the positioning snap push-turn gasket (2a) and the sleeve gasket (3a) have the same thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110069402.7A CN112780655B (en) | 2021-01-19 | 2021-01-19 | Positioning buckle push-and-turn type unilateral bolt fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110069402.7A CN112780655B (en) | 2021-01-19 | 2021-01-19 | Positioning buckle push-and-turn type unilateral bolt fastener |
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| CN112780655A CN112780655A (en) | 2021-05-11 |
| CN112780655B true CN112780655B (en) | 2022-02-01 |
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| CN202110069402.7A Active CN112780655B (en) | 2021-01-19 | 2021-01-19 | Positioning buckle push-and-turn type unilateral bolt fastener |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3490035B2 (en) * | 1999-12-07 | 2004-01-26 | 三協工業株式会社 | Siding panel mounting device |
| US20080075557A1 (en) * | 2006-09-22 | 2008-03-27 | Johnson A David | Constant load bolt |
| TWI449259B (en) * | 2011-02-22 | 2014-08-11 | Wistron Neweb Corp | Screw mechanism for adjusting an angle of an antenna module and related antenna system |
| CN105422582B (en) * | 2015-12-16 | 2017-05-24 | 同济大学 | Whole overturning single-edge bolt fastening piece |
| CN205858923U (en) * | 2016-06-22 | 2017-01-04 | 新昌县七星街道鑫瑞机械厂 | The simple unilateral bolt fastener of a kind of use |
| CN205895831U (en) * | 2016-06-22 | 2017-01-18 | 浙江绿健胶囊有限公司 | Novel unilateral bolt fastener |
| CN108571510B (en) * | 2018-06-28 | 2020-08-18 | 同济大学 | Turnover type unilateral bolt fastener |
| CN210739081U (en) * | 2019-10-24 | 2020-06-12 | 中国矿业大学 | Folding gasket type unilateral bolt fastener |
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