CN115111253A - Locking anticreep fastener - Google Patents
Locking anticreep fastener Download PDFInfo
- Publication number
- CN115111253A CN115111253A CN202210686887.9A CN202210686887A CN115111253A CN 115111253 A CN115111253 A CN 115111253A CN 202210686887 A CN202210686887 A CN 202210686887A CN 115111253 A CN115111253 A CN 115111253A
- Authority
- CN
- China
- Prior art keywords
- fastener
- limiting
- drop
- loosening
- hole
- 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.)
- Pending
Links
- 239000011148 porous material Substances 0.000 claims description 24
- 238000005553 drilling Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 208000013201 Stress fracture Diseases 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- 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
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
Abstract
The invention relates to a fastener, and provides an anti-loose and anti-drop fastener, which comprises: the fastener comprises a fastener body (1), wherein a limiting element capable of stretching out of a contact surface is arranged on the contact surface of the fastener body (1) and a to-be-connected piece. The anti-loose and anti-drop fastener has the characteristics of self-locking, labor saving and convenience in disassembly and assembly, and can prevent loose and drop.
Description
Technical Field
The invention relates to the technical field of fasteners, in particular to an anti-loose and anti-falling fastener.
Background
The anti-loosening method of the fastener comprises a detachable anti-loosening method and a non-detachable anti-loosening method. The detachable anti-loosening comprises friction anti-loosening and mechanical anti-loosening. The disadvantage of friction locking is that the parts are easily released under impact forces. The disadvantage of mechanical anti-loosening is that the parts cannot be lost and damaged. The disadvantage of non-detachable locking is that the bolt is mostly destroyed when the bolt is detached, and the bolt can not be used repeatedly.
For the screws and bolts which are widely used, the screws and bolts mainly have the function of connecting two workpieces together for fastening. The screw and bolt are tools for fastening machine parts of the objects step by utilizing the physics and mathematical principles of the inclined plane circular rotation and the friction force of the objects, and the application is very wide, but in the process of long-term engineering application, a plurality of problems such as connection looseness, insufficient clamping force, fatigue fracture and the like can be brought. According to different application fields, the failure modes of the fasteners are different, however, the most failure modes are loosening and releasing, the vibration loosening risk of a screw and bolt connecting structure is higher than the structural strength damage, and the larger the pretightening force of the screw and the bolt is, the better the structural performance is. The loose connection of the screw and the bolt can affect the quality and the efficiency of the product and even cause accidents. Therefore, how to enable the bolt to work for a longer time more effectively and improve the reliability of related workpieces is a problem to be solved urgently in the prior art.
Disclosure of Invention
Aiming at the problems in the background art, the mechanical anti-loosening method is reliable, and the mechanical anti-loosening method is used for important connection. The invention provides an anti-loose and anti-drop fastener which comprises a fastener body, wherein a limiting element capable of stretching out of a contact surface is arranged on the contact surface of the fastener body and a to-be-connected piece.
Optionally, the anti-loose and anti-drop fastener further includes: a drill locating aperture for drilling an external device extends through the fastener body.
Optionally, the fastener body is provided with an opening communicating the bore hole and the exterior.
Optionally, a portion of the opening is provided in the fastener body side wall and another portion is provided in the contact face of the fastener body.
Optionally, the anti-loose and anti-drop fastener further includes: the limiting pore passage is internally provided with a limiting element; and the exhaust hole is positioned in the fastener body and communicated with the limiting pore channel.
Optionally, the anti-loose and anti-drop fastener further comprises: the limiting shell is positioned in the limiting pore passage, the limiting shell and the limiting pore passage are in clearance or interference fit, and the limiting element and the limiting shell are in interference fit; and the elastic element is positioned in the limiting shell and can extend out of and retract into the limiting pore passage under the elastic force of the elastic element.
Optionally, the elastic element is a spring and the limiting element is a ball.
Optionally, the anti-loose and anti-drop fastener further includes: and the connecting cylinder is connected to the fastener main body and used for connecting the to-be-connected piece.
Optionally, a wrench connecting hole is provided on the top surface of the fastener body for connecting an external wrench.
Optionally, when the number of the limiting hole passages and the number of the drilling positioning hole passages are multiple, the limiting hole passages and the drilling positioning hole passages are uniformly arranged at intervals.
The anti-loose and anti-drop fastener solves the problems that the connection of a screw and a bolt is self-loosened and drops under the action of external cyclic shear load under random vibration of the conventional fastener. Moreover, because the axes of the nut and the bolt are concentric, unlike the eccentric design of a wedge-shaped nut, stress concentration cannot be generated, and the risk of fatigue fracture of the bolt and the bolt due to the stress concentration is reduced. Meanwhile, when the fastener is required to be unscrewed, the locking part can automatically rebound and contract into the head of the fastener under the action of friction force, so that the fastener is convenient to disassemble, time and labor are saved, and the fastener can be repeatedly used.
Drawings
In order that the invention may be more readily understood, it will be described in more detail with reference to specific embodiments thereof that are illustrated in the accompanying drawings. These drawings depict only typical embodiments of the invention and are not therefore to be considered to limit the scope of the invention.
FIG. 1 is a front view of the anti-loose and anti-fall fastener of the present invention.
FIG. 2 is a left side view of the anti-loosening and anti-drop fastener of the present invention.
Fig. 3 is a perspective view of the anti-loose and anti-drop fastener of the invention.
FIG. 4 is a top view of the anti-loosening and anti-drop fastener of the present invention.
FIG. 5 is a bottom view of the anti-loosening and anti-drop fastener of the present invention.
FIG. 6 is an exploded view of the anti-loosening and anti-slip fastener of the present invention.
FIG. 7 is a cross-sectional view of the anti-loosening and anti-drop fastener of the present invention.
FIG. 8 is a cut-away perspective view of the anti-loose and anti-drop fastener of the present invention.
Fig. 9 is a schematic view of a fastening connection of the present invention.
FIG. 10 is a schematic diagram of a first use step of the present invention.
FIG. 11 is a schematic diagram of the second step of the present invention.
FIG. 12 is a schematic diagram of the third step of the present invention.
FIG. 13 is a schematic diagram of the fourth step of the present invention.
FIG. 14 is a schematic diagram of the fifth step of the present invention.
FIG. 15 is a top view of another embodiment of the present invention.
Fig. 16 is a bottom view of another embodiment of the present invention.
Fig. 17 is a perspective view of another embodiment of the present invention.
Reference numerals
1-a fastener body; 2-a limit shell; 3-an elastic element; 4-a stop element; 5-limiting pore canals; 6, drilling and positioning the pore channel; 7-air vent; 8-connecting the column; 9-opening; 10-wrench attachment holes; 11-a first marker; 12-a second marker; 13-a connector; 14-a connected piece; 15-manually marking points; 16-nut mounting hole.
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings so that those skilled in the art can better understand the present invention and can carry out the present invention, but the illustrated embodiments are not intended to limit the present invention, and technical features in the following embodiments and embodiments can be combined with each other without conflict, wherein like parts are denoted by like reference numerals.
First embodiment
In this embodiment, the present invention is described by taking a screw as an example, but the inventive concept of the present invention is not limited thereto. Fig. 1 shows a front view of the anti-loose and anti-drop fastener of the present invention, and fig. 2 shows a left view of the anti-loose and anti-drop fastener of the present invention. FIG. 3 shows a perspective view of the anti-loose and anti-fall fastener of the present invention. As shown in fig. 1-3, the anti-loose and anti-drop fastener of the present invention comprises a fastener body 1 and a connecting body 8. The connecting body 8 is fixedly connected below the fastener body 1, and the connecting body and the fastener body can be integrally formed. In one embodiment, the fastener body 1 and connecting body 8 are both cylindrical, the fastener body 1 having a larger diameter than the connecting body 8, the fastener body 1 being flat in shape and the connecting body 8 being elongated in shape. The connecting body 8 is intended to be driven or inserted into the piece to be connected.
FIG. 4 shows a top view of the anti-loose and anti-drop fastener of the present invention. FIG. 5 is a bottom view of the anti-loose and anti-fall fastener of the present invention. As shown in fig. 4 and 5, the fastener body 1 includes one or more bore-locating holes 6 (4 in the embodiment shown in the figures), one or more retaining holes 5, and one or more vent holes 7 (2 in the figures), one or more first indicia 11 (e.g., rectangular recesses or protrusions or colors, shown as 1 in the figures), and one or more second indicia 12 (e.g., triangular recesses or protrusions or colors, shown as 1 in the figures). Preferably, the drill hole positioning hole 6 and the exhaust hole 7 are concentrically and uniformly distributed. A bore locating bore 6 extends through the fastener body 1. The exhaust hole 7 is located at the upper portion of the fastener body 1. The limiting hole 5 is positioned at the lower part of the fastener body 1. The vent hole 7 and the limiting pore passage 5 are coaxially communicated up and down, the vent hole 7 is small in diameter, and the limiting pore passage 5 is large in diameter. The exhaust hole 7 can be a through hole or a blind hole. As shown in fig. 1-3, the bottom end of the drill locating hole 6 has an opening 9 for discharging drill debris. The opening 9 comprises a portion of the opening in the side wall and a portion of the opening in the bottom surface of the fastener body 1 to facilitate easier evacuation of drilling debris.
FIG. 6 is an exploded view of the anti-loosening and anti-slip fastener of the present invention. Be provided with stop device in the spacing pore 5, stop device includes: a spacing housing 2, a resilient element 3 and a spacing element 4. The limiting shell 2, the elastic element 3 (such as a spring) and the limiting element 4 are arranged from top to bottom in sequence (the elastic element 3 and the limiting element 4 can be separated or connected together). The limiting shell 2 and the limiting pore passage 5 are in clearance or interference fit. The limiting element 4 and the limiting shell 2 are in interference fit. The limiting shell 2, the elastic element 3 and the limiting element 4 are fixed in the limiting hole 5 when leaving the factory. The stop element 4 may extend beyond the contact surface of the fastener body with the part to be connected.
FIG. 7 is a cross-sectional view of the anti-loosening and anti-drop fastener of the present invention. FIG. 8 is a cut-away perspective view of the anti-loose and anti-drop fastener of the present invention. Fig. 9 is a schematic view of a fastening connection of the present invention. Preferably, the anti-loose and anti-drop fastener is provided with a wrench connecting hole 10 for connecting a wrench for installation.
The steps of using the fastener of the present invention are described below with reference to fig. 9-14. Before the bolt is used, the limiting element 4 and the elastic element 3 are in the maximum stroke state, and the ball of the limiting element 4 protrudes from the lower surface (the contact surface with the connecting piece) of the anti-loosening bolt body 1.
When the anti-loose and anti-drop fastener is used, a wrench is firstly inserted into a wrench connecting pore passage 10 in the center of the fastener body 1, the wrench is rotated to screw the anti-loose and anti-drop fastener into an internal threaded pore passage of a to-be-connected piece (a connecting piece and a connected piece) clockwise, and when the wrench is not screwed (pre-tightened to a limit position), a straight line is drawn on a connecting piece 13 along the direction indicated by a first mark 11 to be used as a manual mark 15, and the direction is shown in figure 10.
Then the spanner is rotated anticlockwise to loosen the anti-loose and anti-drop fastener, the second mark 12 is aligned to the position of the line drawing on the connecting piece, and the spanner is taken out, as shown in fig. 11. At this time, the restricting member 4 is pushed into the restricting housing 2 (i.e., the restricting orifice 5), and the elastic member 3 is in a compressed state. The hole 6 is drilled along the drill hole positioning hole in a diagonal state (a diagonal is a preferred scheme, and other modes can be adopted) by using a drill with a limiting device. The chips are then expelled from the exhaust port 9 by blowing gas along the bore-locating aperture 6 with high pressure gas or a needle, see fig. 12. Then the spanner is rotated again to pre-tighten the anti-loose and anti-drop fastener clockwise to the limit position, and the limiting element 4 is ejected and clamped into a spherical hole (also can be a groove, a through hole, a blind hole and other shapes processed in advance) drilled on the surface of the connecting piece, as shown in fig. 13-14. At the moment, the limiting device is restored to the initial state, namely the limiting element 4 protrudes out of the limiting shell 2 and is attached to the drilled spherical hole to complete clamping and limiting, so that the purpose of mechanical looseness prevention of the looseness-prevention fastener is achieved. At this time, the elastic member 3 is in a relaxed state. When the anti-loosening and anti-dropping fastener needs to be disassembled, a wrench is used for increasing certain force (overcoming the friction force of the limiting element 4) to rotate in the opposite direction of pre-tightening, and the anti-loosening and anti-dropping fastener can be easily screwed out. At this point, the stop element 4 retracts inside the stop housing 2.
Second embodiment
In the present embodiment, the present invention is described taking a nut as an example, but the inventive concept of the present invention is not limited thereto. Fig. 10 is a top view of another embodiment (nut) of the present invention. Fig. 11 is a bottom view of another embodiment of the present invention (nut). Fig. 12 is a perspective view of another embodiment (nut) of the present invention.
The fastener body 1 of the anti-loose and anti-drop fastener comprises one or more drilling positioning holes 6 (4 in the embodiment shown in the figure), one or more limiting holes 5 and one or more exhaust holes 7 (2 in the figure). Preferably, the drill hole positioning hole 6 and the exhaust hole 7 are concentrically and uniformly distributed. A bore-locating aperture 6 extends through the fastener body 1. The exhaust hole 7 is located at the upper portion of the fastener body 1. The limiting hole 5 is positioned at the lower part of the fastener body 1. The vent hole 7 and the limiting pore passage 5 are coaxially communicated up and down, the vent hole 7 is small in diameter, and the limiting pore passage 5 is large in diameter.
A limiting element 4 is arranged in the limiting pore passage 5. The limiting element 4 and the limiting pore passage 5 are in clearance or interference fit. The limiting element 4 is fixed in the limiting hole 5 when being shipped.
The second embodiment is used in a similar manner to the first embodiment.
The embodiments described above are merely preferred specific embodiments of the present invention, and the present specification uses the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the present disclosure. General changes and substitutions by those skilled in the art within the technical scope of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An anti-loose and anti-drop fastener, which is characterized by comprising:
the fastener comprises a fastener body (1), wherein a limiting element capable of stretching out of a contact surface is arranged on the contact surface of the fastener body (1) and a to-be-connected piece.
2. The anti-loosening and anti-drop fastener according to claim 1, further comprising:
a drill locating aperture (6) for drilling an external device, which extends through the fastener body (1).
3. The anti-loosening and anti-drop fastener according to claim 2,
an opening (9) is formed in the fastener body (1), and the opening (9) is communicated with the drilling positioning hole channel (6) and the outside.
4. The anti-loosening and anti-drop fastener according to claim 3,
a part of the opening (9) is provided on the side wall of the fastener body (1), and the other part is provided on the contact surface of the fastener body (1).
5. The anti-loosening and anti-drop fastener according to claim 1, further comprising:
the limiting pore channel (5), and the limiting element (4) is positioned in the limiting pore channel (5);
the exhaust hole (7), exhaust hole (7) are located in fastener main part (1), and exhaust hole (7) and spacing pore (5) intercommunication.
6. The anti-loosening and anti-drop fastener according to claim 5, further comprising:
the limiting shell (2), the limiting shell (2) is positioned in the limiting pore passage (5), a gap or interference fit is adopted between the limiting shell (2) and the limiting pore passage (5), and an interference fit is adopted between the limiting element (4) and the limiting shell (2);
the elastic element (3) is positioned in the limiting shell (2), and the elastic element (4) can extend out of and retract into the limiting hole channel (5) under the elastic force of the elastic element (3).
7. The anti-loosening and anti-drop fastener according to claim 6,
the elastic element (3) is a spring, and the limiting element (4) is a sphere.
8. The anti-loosening and anti-drop fastener according to claim 1, further comprising:
the connecting column body (8) is connected to the fastener main body (1) and used for connecting the to-be-connected piece.
9. The anti-loosening and anti-drop fastener according to claim 1,
the fastener main body (1) is provided with a wrench connecting hole (10) for connecting an external wrench;
the fastener body (1) is provided with a first mark (11) and a second mark (12).
10. The fastener of claim 5,
when a plurality of limiting pore canals (5) and a plurality of drilling positioning pore canals (6) are arranged at even intervals.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210686887.9A CN115111253A (en) | 2022-06-17 | 2022-06-17 | Locking anticreep fastener |
| PCT/CN2023/100185 WO2023241623A1 (en) | 2022-06-17 | 2023-06-14 | Anti-loosening and anti-disengaging fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210686887.9A CN115111253A (en) | 2022-06-17 | 2022-06-17 | Locking anticreep fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115111253A true CN115111253A (en) | 2022-09-27 |
Family
ID=83328166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210686887.9A Pending CN115111253A (en) | 2022-06-17 | 2022-06-17 | Locking anticreep fastener |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115111253A (en) |
| WO (1) | WO2023241623A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023241623A1 (en) * | 2022-06-17 | 2023-12-21 | 航星利华(北京)科技有限公司 | Anti-loosening and anti-disengaging fastener |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2180028B (en) * | 1985-09-09 | 1989-09-06 | United Technologies Corp | Fastener |
| JP5934593B2 (en) * | 2012-07-23 | 2016-06-15 | Ｋｙｂ株式会社 | Screw locking structure |
| SE536667C2 (en) * | 2013-01-10 | 2014-05-13 | Glenn Granqvist | Fastening system including threaded fasteners and a latching member |
| CN104863952B (en) * | 2015-05-28 | 2017-10-24 | 国网山东省电力公司经济技术研究院 | A kind of self-locking fastening kit |
| CN206708170U (en) * | 2017-04-17 | 2017-12-05 | 浙江亦宸五金有限公司 | One kind ejects limit-type check bolt |
| CN207278663U (en) * | 2017-06-24 | 2018-04-27 | 海盐三鑫机械有限公司 | A kind of bolt |
| CN213575084U (en) * | 2020-07-08 | 2021-06-29 | 佛山市盛唐电器有限公司 | Screw with good fastening effect |
| CN112922655A (en) * | 2021-03-31 | 2021-06-08 | 淮南矿业(集团)有限责任公司 | Anti-drop connecting piece, machining method and using method |
| CN215444714U (en) * | 2021-08-23 | 2022-01-07 | 山东启合标准件有限公司 | Bolt with shockproof locking function |
| CN115111253A (en) * | 2022-06-17 | 2022-09-27 | 航星利华(北京)科技有限公司 | Locking anticreep fastener |
-
2022
- 2022-06-17 CN CN202210686887.9A patent/CN115111253A/en active Pending
-
2023
- 2023-06-14 WO PCT/CN2023/100185 patent/WO2023241623A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023241623A1 (en) * | 2022-06-17 | 2023-12-21 | 航星利华(北京)科技有限公司 | Anti-loosening and anti-disengaging fastener |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023241623A1 (en) | 2023-12-21 |
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