WO2015000316A1 - 防松动圆柱螺纹件 - Google Patents
防松动圆柱螺纹件 Download PDFInfo
- Publication number
- WO2015000316A1 WO2015000316A1 PCT/CN2014/075344 CN2014075344W WO2015000316A1 WO 2015000316 A1 WO2015000316 A1 WO 2015000316A1 CN 2014075344 W CN2014075344 W CN 2014075344W WO 2015000316 A1 WO2015000316 A1 WO 2015000316A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cylindrical
- thread
- external
- threaded part
- external thread
- Prior art date
Links
- 239000000463 material Substances 0.000 claims abstract description 5
- 230000002265 prevention Effects 0.000 abstract 2
- 230000008878 coupling Effects 0.000 description 21
- 238000010168 coupling process Methods 0.000 description 21
- 238000005859 coupling reaction Methods 0.000 description 21
- 238000002474 experimental method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000007 visual effect Effects 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
- 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
- F16B39/30—Locking exclusively by special shape of the screw-thread
Definitions
- the present invention relates to an anti-loose cylindrical screw.
- the coefficient of friction between the flank and the angle of the thread reaches a certain value, so that the longitudinal self-locking of the coupling pair of the threaded member can be achieved.
- One end of the nut is in contact with the bolt head and has a certain
- the pre-tightening screw coupling pair is taken as an example: the bolt head is oriented upwards perpendicular to the horizontal plane, and the screw coupling pair makes the movement of the hard fixture at a certain speed in the forward horizontal straight direction (only the bolt head and the impact moment) Fixation contact).
- the bolt and the nut are divided into left and right sides by a plane containing the longitudinal central axis of the mutually overlapping internal threads and the longitudinal central axis of the external thread and the direction of movement of the coupling member of the threaded member, the left external thread of the bolt
- the upper flank is a downward curved bevel
- the upper flank of the right external thread of the bolt is an upward curved bevel.
- the friction between the lower flank of the thread and the upper flank of the left external thread of the bolt is greater, so When the coupling of the screw member hits the fixture, the nut will produce the contact surface of the upper flank of the right internal thread and the upper flank of the right external thread as a fulcrum (in theory, one circle inside and outside of the ordinary cylindrical thread)
- the upper and lower flank of the thread are arranged by a plurality of straight lines which are not parallel to each other along the spiral of the thread, so that the lower flank of one thread of the ordinary cylindrical thread which is in contact with each other and the outer thread of one turn
- this contact point is the theoretical fulcrum
- the tendency to rotate to the left so when the joint of the screw member hits the fixed object, the force of the nut exceeds a certain value, the nut will perform the movement without the fixed axial left rotation, that is, the
- the lateral clearance between the inner and outer threads provides just the space for the nut to make no fixed axial left-rotation motion.
- a small experiment below Put a circle on a horizontally suspended cylindrical pencil with an inner diameter that is more than twice the outer diameter of the pencil (so that it is easy to experiment and also magnify the visual effect of the experiment).
- the circle will make a longitudinal rotation without a fixed axis, and as long as the thrust direction is constant, the direction of rotation of the circle does not change. As long as the direction of the thrust changes, the direction of rotation of the circle also changes.
- the common cylindrical screw coupling pair is in the environment of lateral vibration or impact, because the spiral structure of the thread, one side inside and outside The friction between the flank of the thread is greater than the friction between the flank of the inner and outer threads of the other side, so the internally threaded or externally threaded member will produce a larger frictional inner and outer thread.
- the contact surface of the flank is a tendency for the fulcrum to perform a lateral rotation motion.
- the internally threaded member or the externally threaded member will perform a lateral rotation without a fixed axis.
- the direction of lateral rotation is the direction in which the inner and outer threaded members are relatively retracted, and the lateral gap between the inner and outer threads provides space for the lateral rotation of the inner and outer threaded members without a fixed axis, and
- the dynamic friction factor between the flank of the external thread and the inclination of the flank cannot satisfy the condition of the lateral self-locking of the coupling pair of the screw.
- the dynamic friction factor is less than tan30° (0.577), so the surface of the internal or external thread cannot be laterally locked with the wedge bevel. Therefore, the recommended large preload should be used to make the surface of the internal or external thread.
- the structure is deformed to form a lateral locking relationship with the wedge-shaped inclined surface, thereby effectively preventing the lateral rotation of the fixed shaft between the inner and outer threaded members, so that the effective locking of the cylindrical threaded coupling pair can be achieved.
- the object is stationary on the inclined surface.
- the inclined angle of the inclined surface is called the friction angle.
- the dynamic friction factor between the inner and outer threads should not be greater than 0.15.
- the anti-looseness of the existing cylindrical threaded screw thread must be dependent on the longitudinal expansion force of the screw and the workpiece to obtain the pre-tightening force, so it is only suitable for the anti-loose of the rigid fastening joint, the existing cylindrical thread of the wedge thread
- some or all of the pre-tightening force may be lost due to the longitudinal deformation of the screw member and the workpiece, thereby causing the loosening failure.
- the present invention provides an anti-loose cylindrical screw member, which can effectively prevent looseness between the cylindrical inner screw member and the cylindrical outer screw member without the longitudinal stretching force of the screw member and the workpiece, and is suitable for rigid tightness.
- Various cylindrical screw members such as solid coupling and elastic coupling, are loosened, and the stability against loosening is stronger.
- the technical solution adopted by the present invention is: a cylindrical internal thread is arranged in the inner hole of the internal threaded member, and a cylindrical external thread is arranged on the screw of the externally threaded member, and the external thread of the externally threaded member has a longitudinal direction with the external thread.
- the cylindrical surface parallel to the central axis, the outer diameter of the cylindrical surface is smaller than the outer diameter of the external thread, the surface of the internal thread and the external thread and the surface of the cylinder are not covered with the anti-loose material, and the internal thread and the external thread are screwed together
- the structure between the cylindrical surface and the crest of the internal thread is in close contact with each other, that is, the structure of the lateral locking, so as to effectively prevent the lateral rotation of the fixed shaft between the inner and outer threaded members, that is, the cylinder can be realized. Effective anti-loose between the internally threaded member and the cylindrical externally threaded member.
- the utility model has the beneficial effects that: the above-mentioned anti-loose cylindrical screw member can realize the cylindrical inner screw member and the longitudinal expansion and contraction force of the screw member and the workpiece, compared with the conventional wedge-shaped cylindrical screw member.
- the effective anti-loose between the cylindrical external thread parts is suitable for the anti-loose connection of various cylindrical screw parts such as rigid fastening connection and elastic connection, and the stability against loosening is stronger; the above-mentioned anti-loose cylindrical screw piece, its structure It is simple, easy to use, and can be scaled up using existing processes and equipment.
- FIG. 1 is a schematic side elevational view, partly in section, of a screw coupling pair between a female thread and an external thread of a first embodiment of the present invention
- Figure 2 is a central longitudinal sectional side elevational view of the screw coupling pair of the internal thread and the external thread of the second embodiment of the present invention
- the anti-loose cylindrical screw member includes an internally threaded member 1 and an externally threaded member 2, wherein: the internal threaded member 1 is provided with a cylindrical internal thread 3 in the inner hole thereof, and the externally threaded member 2 is provided with a cylindrical portion on the screw
- the external thread 4 the root of the external thread 4 has a cylindrical surface 6 parallel to the longitudinal central axis 5 of the external thread 4, the outer diameter of the cylindrical surface 6 is smaller than the maximum outer diameter of the external thread 4; the internal thread 3 and the external thread 4
- the surface is not covered with the anti-loose material; as shown in Fig. 1, after the internal thread 3 and the external thread 4 are screwed together, the cylindrical surface 6 and the crest of the internal thread 3 are in close contact with each other.
- the anti-loose cylindrical screw member includes an internally threaded member 1 and an externally threaded member 2, wherein: the internal threaded member 1 is provided with a cylindrical internal thread 3 in the inner hole thereof, and the externally threaded member 2 is provided with a cylindrical portion on the screw
- the external thread 4 the screw of the externally threaded member 2 has a cylindrical surface 6 parallel to the longitudinal central axis 5 of the external thread 4, the outer diameter of the cylindrical surface 6 is smaller than the maximum outer diameter of the external thread 4; the internal thread 3 and the external thread 4
- the surface and the cylindrical surface 6 are not covered with the anti-loose material; as shown in Fig. 2, after the internal thread 3 and the external thread 4 are screwed together, the cylindrical surface 6 and the crest of the internal thread 3 are in close contact with each other. Structure.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/898,854 US20160131176A1 (en) | 2013-07-03 | 2014-04-15 | Anti-loosening cylindrical threaded part |
EP14819641.3A EP3020985A4 (en) | 2013-07-03 | 2014-04-15 | Anti-loosening cylindrical threaded part |
JP2016520248A JP2016522374A (ja) | 2013-07-03 | 2014-04-15 | 緩み止め円柱状ねじ部材 |
CA2915886A CA2915886A1 (en) | 2013-07-03 | 2014-04-15 | Anti-loosening cylindrical threaded part |
KR1020157035807A KR20160003313A (ko) | 2013-07-03 | 2014-04-15 | 풀림 방지 원기둥 나사산 부재 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201320391528.7U CN203374616U (zh) | 2013-07-03 | 2013-07-03 | 防松动圆柱螺纹件 |
CN201320391528.7 | 2013-07-03 | ||
CN2013102757276A CN103291727A (zh) | 2013-07-03 | 2013-07-03 | 防松动圆柱螺纹件 |
CN201310275727.6 | 2013-07-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2015000316A1 true WO2015000316A1 (zh) | 2015-01-08 |
WO2015000316A9 WO2015000316A9 (zh) | 2016-03-31 |
Family
ID=52143072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2014/075344 WO2015000316A1 (zh) | 2013-07-03 | 2014-04-15 | 防松动圆柱螺纹件 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20160131176A1 (zh) |
EP (1) | EP3020985A4 (zh) |
JP (1) | JP2016522374A (zh) |
KR (1) | KR20160003313A (zh) |
CA (1) | CA2915886A1 (zh) |
WO (1) | WO2015000316A1 (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11553933B2 (en) | 2020-01-07 | 2023-01-17 | DePuy Synthes Products, Inc. | System and method for inserting an intramedullary nail |
US11679443B1 (en) * | 2022-01-25 | 2023-06-20 | Lemco Products LLC | Apparatus for a quick release cutting device blade assembly |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB242299A (en) * | 1924-10-30 | 1927-01-31 | Fr De Filetage Indesserrable D | Improvements in or relating to screws, bolts and nuts |
US3952785A (en) * | 1974-05-30 | 1976-04-27 | The Lamson & Sessions Co. | Locknut |
EP1391618A1 (de) * | 2002-08-23 | 2004-02-25 | HYDAC Electronic GmbH | Schraubensicherung |
CN102261365A (zh) * | 2010-04-22 | 2011-11-30 | (株)亚细亚Bolt | 有耐冲、耐振及紧固力加强结构的螺丝及螺丝式机械构件 |
CN103291727A (zh) * | 2013-07-03 | 2013-09-11 | 许松林 | 防松动圆柱螺纹件 |
CN103291730A (zh) * | 2013-07-03 | 2013-09-11 | 许松林 | 一种防松动圆柱螺纹件 |
CN203335598U (zh) * | 2013-07-03 | 2013-12-11 | 许松林 | 一种防松动圆柱螺纹件 |
CN203374616U (zh) * | 2013-07-03 | 2014-01-01 | 许松林 | 防松动圆柱螺纹件 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US156722A (en) * | 1874-11-10 | Improvement in nut-locks | ||
US769717A (en) * | 1903-11-20 | 1904-09-13 | Catharine Ryan | Nut-lock. |
US1210507A (en) * | 1916-05-25 | 1917-01-02 | William A Rosenbaum | Nut and bolt lock. |
US1447056A (en) * | 1921-12-06 | 1923-02-27 | Finis L Bates | Nut lock |
US1657244A (en) * | 1924-09-05 | 1928-01-24 | Fr De Filetage Indesserrable D | Tight-holding bolt and nut |
US1798604A (en) * | 1927-11-01 | 1931-03-31 | Dardelet Threadlock Corp | Self-locking coupled screw element |
US1697118A (en) * | 1927-11-01 | 1929-01-01 | Dardelet Threadlock Corp | Self-locking coupled screw element |
US1807494A (en) * | 1930-03-07 | 1931-05-26 | George P Proctor | Locking thread connection |
USRE20542E (en) * | 1935-07-05 | 1937-10-26 | Locking device | |
US2437638A (en) * | 1942-10-23 | 1948-03-09 | Dardelet Threadlock Corp | Stud and installation thereof |
US2742073A (en) * | 1952-06-20 | 1956-04-17 | Ernest D Iannetti | Quick attachable nut and bolt assembly |
US3133578A (en) * | 1962-10-26 | 1964-05-19 | Milton A Moskovitz | Self-locking bolt |
US3238987A (en) * | 1963-10-21 | 1966-03-08 | Standard Locknut & Lockwasher | Locknut |
US3196918A (en) * | 1964-07-16 | 1965-07-27 | Columbus Bolt & Forging Compan | Self-locking threaded fastener |
US3464473A (en) * | 1968-03-25 | 1969-09-02 | Omark Winslow Co | Screw thread lock |
US3664400A (en) * | 1970-03-02 | 1972-05-23 | George W Moore Inc | Locking set screw |
US4351626A (en) * | 1980-04-18 | 1982-09-28 | Holmes Horace D | Self-locking threaded fastener |
US5139380A (en) * | 1990-11-28 | 1992-08-18 | Pac Fasteners | Scalloped nut and method of construction |
JP2002349536A (ja) * | 2001-05-31 | 2002-12-04 | Nitto Seiko Co Ltd | 緩み止めねじ |
JP3149555U (ja) * | 2009-01-20 | 2009-04-02 | 一心エンジニアリング有限会社 | 緩止締結部材 |
-
2014
- 2014-04-15 US US14/898,854 patent/US20160131176A1/en not_active Abandoned
- 2014-04-15 CA CA2915886A patent/CA2915886A1/en not_active Abandoned
- 2014-04-15 JP JP2016520248A patent/JP2016522374A/ja active Pending
- 2014-04-15 WO PCT/CN2014/075344 patent/WO2015000316A1/zh active Application Filing
- 2014-04-15 EP EP14819641.3A patent/EP3020985A4/en not_active Withdrawn
- 2014-04-15 KR KR1020157035807A patent/KR20160003313A/ko not_active Application Discontinuation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB242299A (en) * | 1924-10-30 | 1927-01-31 | Fr De Filetage Indesserrable D | Improvements in or relating to screws, bolts and nuts |
US3952785A (en) * | 1974-05-30 | 1976-04-27 | The Lamson & Sessions Co. | Locknut |
EP1391618A1 (de) * | 2002-08-23 | 2004-02-25 | HYDAC Electronic GmbH | Schraubensicherung |
CN102261365A (zh) * | 2010-04-22 | 2011-11-30 | (株)亚细亚Bolt | 有耐冲、耐振及紧固力加强结构的螺丝及螺丝式机械构件 |
CN103291727A (zh) * | 2013-07-03 | 2013-09-11 | 许松林 | 防松动圆柱螺纹件 |
CN103291730A (zh) * | 2013-07-03 | 2013-09-11 | 许松林 | 一种防松动圆柱螺纹件 |
CN203335598U (zh) * | 2013-07-03 | 2013-12-11 | 许松林 | 一种防松动圆柱螺纹件 |
CN203374616U (zh) * | 2013-07-03 | 2014-01-01 | 许松林 | 防松动圆柱螺纹件 |
Also Published As
Publication number | Publication date |
---|---|
KR20160003313A (ko) | 2016-01-08 |
EP3020985A4 (en) | 2017-02-22 |
JP2016522374A (ja) | 2016-07-28 |
US20160131176A1 (en) | 2016-05-12 |
CA2915886A1 (en) | 2015-01-08 |
WO2015000316A9 (zh) | 2016-03-31 |
EP3020985A1 (en) | 2016-05-18 |
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