CN113357251A - Anti-loosening screw assembly - Google Patents
Anti-loosening screw assembly Download PDFInfo
- Publication number
- CN113357251A CN113357251A CN202110597934.8A CN202110597934A CN113357251A CN 113357251 A CN113357251 A CN 113357251A CN 202110597934 A CN202110597934 A CN 202110597934A CN 113357251 A CN113357251 A CN 113357251A
- Authority
- CN
- China
- Prior art keywords
- driving rod
- positioning pin
- mounting hole
- screw assembly
- locking screw
- 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
- 238000009434 installation Methods 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing 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
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/04—Locking of screws, bolts or nuts in which the locking takes place after screwing down with a member penetrating the screw-threaded surface of at least one part, e.g. a pin, a wedge, cotter-pin, screw
-
- 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
Abstract
The invention discloses a check screw assembly, which comprises a screw and a nut and is characterized in that: the device also comprises a positioning pin and a driving rod; the screw is internally provided with a first mounting hole extending along the axial direction and a second mounting hole extending along the radial direction, and the first mounting hole is communicated with the second mounting hole 12; the driving rod can be circumferentially and rotatably installed in the first installation hole, a guide groove extending along the circumferential direction of the driving shaft is formed in the side wall of the driving rod, the positioning pin can be axially and movably matched in the second installation hole, the lower end of the positioning pin is matched in the guide groove, and the driving rod can drive the upper end of the positioning pin to enter and exit the second installation hole after rotating; and the hole wall of the nut is provided with a positioning groove for inserting the upper end of the positioning pin after moving upwards. The invention has the anti-loosening effect so as to achieve the stable anti-loosening effect.
Description
Technical Field
The invention relates to the technical field of fasteners, in particular to a check screw assembly.
Background
Screws are used extensively in the mechanical sector as fasteners. The screw can be in the environment of rocking or vibration under the in-process of fixed connection spare, and the easy screw that leads to under this condition produces not hard up problem, and then probably drops, influences the effect of fastening. Therefore, there is a need for a screw with loosening function.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the anti-loosening screw assembly which has an anti-loosening effect in the fastening process so as to achieve a stable anti-loosening effect.
In order to achieve the purpose, the invention provides the following technical scheme:
a locking screw assembly, includes screw and nut, characterized by: the device also comprises a positioning pin and a driving rod;
the screw is internally provided with a first mounting hole extending along the axial direction and a second mounting hole extending along the radial direction, and the first mounting hole is communicated with the second mounting hole 12;
the driving rod can be circumferentially and rotatably installed in the first installation hole, a guide groove extending along the circumferential direction of the driving shaft is formed in the side wall of the driving rod, the positioning pin can be axially and movably matched in the second installation hole, the lower end of the positioning pin is matched in the guide groove, and the driving rod can drive the upper end of the positioning pin to enter and exit the second installation hole after rotating;
and the hole wall of the nut is provided with a positioning groove for inserting the upper end of the positioning pin after moving upwards.
Preferably, the cross section of the guide groove is of a T-shaped structure, and the lower end of the positioning pin is also of a T-shaped structure.
Preferably, the distance from one end of the guide groove to the center of the driving rod to the distance from the other end of the guide groove to the center of the driving rod gradually increases.
Preferably, the end wall of the outer end of the driving rod is provided with an inner hexagonal groove.
Preferably, a circumferential limiting plug is arranged on an opening of the first mounting hole, and an outer hexagonal boss matched with the inner hexagonal groove is arranged at one end, facing the driving rod, of the circumferential limiting plug.
Preferably, the cross section of the corresponding opening of the first mounting hole is of a square structure, and the shape of the circumferential limiting plug corresponds to the position of the opening of the first mounting hole.
Preferably, the cross section of the upper end of the positioning pin is of a triangular structure.
The invention has the advantages that: under the screwing state, the upper end of the positioning pin is positioned in the positioning groove of the nut under the pushing of the guide groove of the driving rod, so that the rotation of the nut relative to the screw is limited, the effective anti-loosening effect is achieved, and the stability between the parts fastened through the anti-loosening mechanism is obviously improved.
Drawings
FIG. 1 is a cross-sectional view of a locking screw assembly according to an embodiment of the present invention;
fig. 2 is a schematic view of the embodiment providing the engagement between the positioning pin and the guide groove in the axial direction of the driving rod;
fig. 3 is a schematic diagram of the engagement between the positioning pin and the guide groove in the radial direction of the driving rod according to the present embodiment.
Detailed Description
The locking screw assembly of the present invention will be further described with reference to fig. 1 to 3.
The utility model provides a locking screw subassembly, includes screw 1 and nut 2, characterized by: also comprises a positioning pin 4 and a driving rod 5. The screw 1 is internally provided with a first mounting hole 11 extending along the axial direction and a second mounting hole 12 extending along the radial direction, and the first mounting hole 11 is communicated with the second mounting hole 12. The driving rod 5 is rotatably installed in the first installation hole 11 in the circumferential direction, and a guide groove 51 extending in the circumferential direction of the driving rod is formed in the side wall of the driving rod 5, wherein the distance from one end 512 of the guide groove 51 to the center of the driving rod 5 to the other end 513 is gradually increased. The positioning pin 4 can be axially movably matched in the second mounting hole 12, the lower end of the positioning pin 4 is matched in the guide groove 51, and the driving rod 5 can drive the upper end of the positioning pin 4 to enter and exit the second mounting hole 12 after rotating. The hole wall of the nut 2 is provided with a positioning groove 21 for inserting the upper end of the positioning pin 4 after moving upwards.
Based on the structure, when the fastening device is used for fastening, the driving rod 5 drives the positioning pin 4 to be completely retracted into the second mounting hole 12; inserting the screw 1 into a connecting piece 3 to be fastened, and screwing the nut 2 from the rod body part of the screw 1; after the nut 2 is screwed in place, the driving rod 5 is rotated to expose the upper end of the positioning pin 4 out of the second mounting hole 12 and enter the positioning groove 21 of the nut 2, so that the relative rotation of the nut 2 and the screw 1 is limited, and the anti-loosening effect is achieved.
In the present embodiment, in order to enable the positioning groove 21 to be accurately abutted to the second mounting hole 12 after the nut 2 is tightened, the sizes of the nut 2 and the screw 1 are customized to fit the size of the corresponding connecting piece 3 by referring to the thickness of the connecting piece; if the requirement of the connecting piece 3 on the tightening degree is not high, the invention can be directly used without customization.
Specifically, the cross section of the guide groove 51 is a T-shaped structure, and the lower end of the positioning pin 4 is also a T-shaped structure, that is, two guide edges 41 are arranged on the lower end of the positioning pin 4. In operation, the bottom wall 511 of the guide groove 51 pushes the positioning pin 4 to move upward, and the inner top surface of the guide groove 51 fits on the upper surface of the guide edge 41 to pull the positioning pin 4 downward.
The end wall of the outer end of the driving rod 5 is provided with an inner hexagonal groove. The hexagonal socket can facilitate the rotation of the driving rod 5.
A circumferential limiting plug 6 is arranged at the opening of the first mounting hole 11, and an outer hexagonal boss matched with the inner hexagonal groove is arranged at one end, facing the driving rod 5, of the circumferential limiting plug 6; the cross-section that first mounting hole 11 corresponds opening part 111 is the square structure, the shape of circumference stopper 6 is corresponding with the opening part of first mounting hole 11 to this circumferencial direction of injecing circumference stopper 6 and actuating lever 5 avoids the unexpected pivoted problem of actuating lever 5. It should be noted that, the positioning pin 4 moves from one end 512 to the other end 513 of the guide groove 51, and the driving rod 5 needs to rotate 90 °, so that when the driving rod 5 rotates back and forth at 90 °, the circumferential limiting plug 6 also rotates 90 ° with it and then is plugged into the first mounting hole 11, so that the outer hexagonal boss is embedded into the inner hexagonal groove.
On the back of the circumferential direction stopper 6, there is a pulling ring 61 for facilitating the pulling out of the circumferential direction stopper 6.
In order to achieve a dust-proof effect, a sealing plug is provided at the opening of the first mounting hole 11.
The cross section of the upper end of the positioning pin 4 and the cross section of the positioning groove 21 are both triangular structures, so that the upper end of the positioning pin 4 enters the positioning groove 21 conveniently.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. A locking screw assembly, includes screw and nut, characterized by: the device also comprises a positioning pin and a driving rod;
the screw is internally provided with a first mounting hole extending along the axial direction and a second mounting hole extending along the radial direction, and the first mounting hole is communicated with the second mounting hole 12;
the driving rod can be circumferentially and rotatably installed in the first installation hole, a guide groove extending along the circumferential direction of the driving shaft is formed in the side wall of the driving rod, the positioning pin can be axially and movably matched in the second installation hole, the lower end of the positioning pin is matched in the guide groove, and the driving rod can drive the upper end of the positioning pin to enter and exit the second installation hole after rotating;
and the hole wall of the nut is provided with a positioning groove for inserting the upper end of the positioning pin after moving upwards.
2. The locking screw assembly according to claim 1, wherein: the cross-section of guide way is T type structure, the lower extreme of locating pin also is T type structure.
3. The locking screw assembly according to claim 1, wherein: the distance from one end of the guide groove to the center of the driving rod to the distance from the other end of the guide groove to the center of the driving rod is gradually increased.
4. The locking screw assembly according to claim 1, wherein: and the end wall of the outer end of the driving rod is provided with an inner hexagonal groove.
5. The locking screw assembly according to claim 1, wherein: be provided with the spacing stopper of circumference on the opening of first mounting hole, the spacing stopper of circumference has on one of orientation actuating lever and outer hexagonal boss with interior hexagonal recess complex.
6. The locking screw assembly according to claim 5, wherein: the cross section of the first mounting hole corresponding to the opening is of a square structure, and the shape of the circumferential limiting plug corresponds to the position of the opening of the first mounting hole.
7. The locking screw assembly according to claim 1, wherein: the cross section of the upper end of the positioning pin is of a triangular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110597934.8A CN113357251A (en) | 2021-05-31 | 2021-05-31 | Anti-loosening screw assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110597934.8A CN113357251A (en) | 2021-05-31 | 2021-05-31 | Anti-loosening screw assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113357251A true CN113357251A (en) | 2021-09-07 |
Family
ID=77528316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110597934.8A Pending CN113357251A (en) | 2021-05-31 | 2021-05-31 | Anti-loosening screw assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113357251A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001012999A1 (en) * | 1999-08-11 | 2001-02-22 | Framatome Anp Gmbh | Screw device and method for locking a pipe nut of a drive housing pertaining to a control rod of a nuclear power plant |
| CN104801690A (en) * | 2015-03-12 | 2015-07-29 | 宁波市北仑华盛模具厂 | Die-casting die capable of secondarily laterally pulling core |
| CN204851949U (en) * | 2015-07-14 | 2015-12-09 | 江苏永昊高强度螺栓有限公司 | Check fixing bolt |
| CN108488198A (en) * | 2018-06-26 | 2018-09-04 | 周焱春 | A kind of self-locking screw |
| CN110285130A (en) * | 2019-07-08 | 2019-09-27 | 温州远协电子科技有限公司 | A kind of quick anti-loose fastening device and its assembly and application method |
| CN110374980A (en) * | 2019-07-22 | 2019-10-25 | 新昌县远轴工业设计有限公司 | A kind of fast self-locking formula nut structure and its assembly and application method |
| CN111561508A (en) * | 2020-05-05 | 2020-08-21 | 浦江县颐硕科技开发有限公司 | Efficient locking nut and assembling and disassembling method thereof |
| CN212389635U (en) * | 2020-05-07 | 2021-01-22 | 东莞市固拓五金科技有限公司 | Detachable anti-loosening screw |
-
2021
- 2021-05-31 CN CN202110597934.8A patent/CN113357251A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001012999A1 (en) * | 1999-08-11 | 2001-02-22 | Framatome Anp Gmbh | Screw device and method for locking a pipe nut of a drive housing pertaining to a control rod of a nuclear power plant |
| CN104801690A (en) * | 2015-03-12 | 2015-07-29 | 宁波市北仑华盛模具厂 | Die-casting die capable of secondarily laterally pulling core |
| CN204851949U (en) * | 2015-07-14 | 2015-12-09 | 江苏永昊高强度螺栓有限公司 | Check fixing bolt |
| CN108488198A (en) * | 2018-06-26 | 2018-09-04 | 周焱春 | A kind of self-locking screw |
| CN110285130A (en) * | 2019-07-08 | 2019-09-27 | 温州远协电子科技有限公司 | A kind of quick anti-loose fastening device and its assembly and application method |
| CN110374980A (en) * | 2019-07-22 | 2019-10-25 | 新昌县远轴工业设计有限公司 | A kind of fast self-locking formula nut structure and its assembly and application method |
| CN111561508A (en) * | 2020-05-05 | 2020-08-21 | 浦江县颐硕科技开发有限公司 | Efficient locking nut and assembling and disassembling method thereof |
| CN212389635U (en) * | 2020-05-07 | 2021-01-22 | 东莞市固拓五金科技有限公司 | Detachable anti-loosening screw |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210907 |
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| RJ01 | Rejection of invention patent application after publication |