WO2002057639A1 - Structure de vis composite dont le diametre interieur presente une section transversale elliptique - Google Patents

Structure de vis composite dont le diametre interieur presente une section transversale elliptique Download PDF

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Publication number
WO2002057639A1
WO2002057639A1 PCT/IB2001/000552 IB0100552W WO02057639A1 WO 2002057639 A1 WO2002057639 A1 WO 2002057639A1 IB 0100552 W IB0100552 W IB 0100552W WO 02057639 A1 WO02057639 A1 WO 02057639A1
Authority
WO
WIPO (PCT)
Prior art keywords
thread
effective torque
minor diameter
screw structure
section
Prior art date
Application number
PCT/IB2001/000552
Other languages
English (en)
Chinese (zh)
Inventor
Zong Cai Tang
Wo Ho To
Yicheng Zhou
Chi Ki Cheung
Original Assignee
Zong Cai Tang
Wo Ho To
Yicheng Zhou
Chi Ki Cheung
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zong Cai Tang, Wo Ho To, Yicheng Zhou, Chi Ki Cheung filed Critical Zong Cai Tang
Publication of WO2002057639A1 publication Critical patent/WO2002057639A1/fr

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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
    • F16B33/00—Features common to bolt and nut
    • F16B33/02—Shape of thread; Special thread-forms

Definitions

  • the invention relates to a composite thread structure. Background technique
  • Threaded joints are widely used in fastener joints, but they have the problem of loosening.
  • a composite thread structure is adopted.
  • a composite thread is a discontinuous and variable cross-section thread. This thread is composed of two left- and right-handed helixes with different rotation directions. The bottoms of the thread teeth cross each other.
  • Compound threads can be used with both ordinary left-handed threads and ordinary right-handed threads. Compound threads are widely used, especially for anti-loosening applications of fasteners.
  • Use two turn nuts with different rotation directions that is, the fastening nut on the support surface of the workpiece and the lock nut on the non-support surface to prevent loosening.
  • the pre-tightening force of the lock nut is too small. In this case, the lock nut will be loosened first, resulting in loosening of the composite thread. Disclosure of invention
  • An object of the present invention is to provide an effective torque-type composite screw structure capable of forming friction force between the screw pairs in the lateral direction.
  • the present invention is realized by providing an effective moment type composite thread structure with a small diameter of an ellipse.
  • FIG. 1 is a top view of an effective torque type composite thread structure of the present invention
  • FIG. 2 is a front view of an effective moment type composite thread structure of the present invention
  • FIG. 3 is a side view of an effective torque type composite thread structure of the present invention. The best way to implement the invention
  • FIG. 1 is a plan view of an effective torque type composite thread structure of the present invention, that is, a radial view.
  • the small-diameter short axis L1 and the small-diameter long axis L2 of the effective moment type composite thread structure are not equal, and the small diameter of the effective moment type composite thread structure is oval.
  • 1 is the outer contour of the effective torque type compound thread.
  • the difference between the effective torque-type composite thread structure and the composite thread structure of the present invention is that the turning track of the composite torque thread is round, while the turning track of the effective torque-type composite thread is oval, that is, the small diameter of the elliptical thread can It is processed by known techniques such as a well-known CNC lathe, a CNC contour lathe, and the like.
  • the lengths of the small-diameter short axis L1 and the small-diameter long axis L2 of the effective torque type composite thread are not equal.
  • the difference between the length of the long axis and the short axis is not greater than the tooth height of the thread.
  • the invention has novel structure, clean tube, wide application, and very good anti-loose effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Dowels (AREA)

Abstract

L"invention concerne une structure de vis composite comportant un filetage à gauche et un filetage à droite. Ces deux filetages sont disposés de manière uniforme et leur fond se croisent. La section transversale du diamètre intérieur de ladite structure de vis composite est elliptique.
PCT/IB2001/000552 2001-01-19 2001-04-03 Structure de vis composite dont le diametre interieur presente une section transversale elliptique WO2002057639A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN01108054.X 2001-01-19
CN 01108054 CN1317651A (zh) 2001-01-19 2001-01-19 有效力矩型复合螺纹

Publications (1)

Publication Number Publication Date
WO2002057639A1 true WO2002057639A1 (fr) 2002-07-25

Family

ID=4656943

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2001/000552 WO2002057639A1 (fr) 2001-01-19 2001-04-03 Structure de vis composite dont le diametre interieur presente une section transversale elliptique

Country Status (2)

Country Link
CN (1) CN1317651A (fr)
WO (1) WO2002057639A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103334999B (zh) * 2013-06-28 2015-08-19 中国五冶集团有限公司 设置于螺母内部的交叉螺纹及其生产工艺

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1675689B1 (de) * 1963-09-26 1969-12-18 Siemens Ag Schraubverbindung fuer zwei zylindrische Teile,insbesondere Rohre
GB2120345A (en) * 1982-05-11 1983-11-30 Mochizuki Kurakichi Anti-loosening bolt
CN2240632Y (zh) * 1995-09-11 1996-11-20 唐宗才 复合式自锁螺杆
CN2380736Y (zh) * 1999-07-27 2000-05-31 唐宗才 复合螺纹

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1675689B1 (de) * 1963-09-26 1969-12-18 Siemens Ag Schraubverbindung fuer zwei zylindrische Teile,insbesondere Rohre
GB2120345A (en) * 1982-05-11 1983-11-30 Mochizuki Kurakichi Anti-loosening bolt
CN2240632Y (zh) * 1995-09-11 1996-11-20 唐宗才 复合式自锁螺杆
CN2380736Y (zh) * 1999-07-27 2000-05-31 唐宗才 复合螺纹

Also Published As

Publication number Publication date
CN1317651A (zh) 2001-10-17

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