WO2009024093A1 - Dispositif de fixation sous forme de boulon verrouillable et antirouille - Google Patents

Dispositif de fixation sous forme de boulon verrouillable et antirouille Download PDF

Info

Publication number
WO2009024093A1
WO2009024093A1 PCT/CN2008/072084 CN2008072084W WO2009024093A1 WO 2009024093 A1 WO2009024093 A1 WO 2009024093A1 CN 2008072084 W CN2008072084 W CN 2008072084W WO 2009024093 A1 WO2009024093 A1 WO 2009024093A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw
inner nut
thread
nut
diameter
Prior art date
Application number
PCT/CN2008/072084
Other languages
English (en)
Chinese (zh)
Inventor
Jilin Zhang
Yi Zhang
Original Assignee
Beijing 3-D Spinal Orthopedics S & T Co. Ltd
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
Priority claimed from CNA2007101205102A external-priority patent/CN101105195A/zh
Priority claimed from CNU200820108336XU external-priority patent/CN201221545Y/zh
Application filed by Beijing 3-D Spinal Orthopedics S & T Co. Ltd filed Critical Beijing 3-D Spinal Orthopedics S & T Co. Ltd
Publication of WO2009024093A1 publication Critical patent/WO2009024093A1/fr

Links

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
    • F16B33/008—Corrosion preventing means
    • 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
    • F16B33/004—Sealing; Insulation
    • 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
    • F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
    • F16B39/16—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts in which the screw-thread of the locknut differs from that of the nut

Definitions

  • the present invention relates to a bolt fastener, and more particularly to a locking rust preventive bolt fastener. Background technique
  • Bolts are industrial base parts and bolts are used on almost all machines.
  • the existing bolts generally consist of a screw and a nut.
  • the diameter of the screw is the same as that of the screw thread.
  • the object fastened by the bolt is easy to loose under the action of vibration or other external force, and even the nut is detached. It is not uncommon for those who cause accidents. Since the anti-looseness of the existing bolt is achieved by the thread friction between the nut and the screw, the friction area is increased in order to prevent loosening.
  • the present invention provides a locking rust-proof bolt fastener.
  • a locking rustproof bolt fastener including a screw and an inner nut, which are special in that: an external screw head is also included.
  • the threaded end of the screw is provided with two threads of opposite rotation directions, the inner nut is in close contact with the outer screw head, the contact surface is a smooth surface, and the inner nut and the outer screw head are respectively matched with the two threads.
  • the shape of the end surface of the inner nut contacting the outer screw head is a slope having a certain degree of twist.
  • the angle of inclination of the contact surface between the inner nut and the outer screw head is 30° to 50°.
  • the contact surface of the inner nut and the outer screw head is coated with organic oil to increase the sealing property of the screw thread, avoid contact with air and water and rust, and is easy to disassemble.
  • the threaded end of the screw is provided with a screw hole, the two threads on the screw are respectively an external thread and an internal thread, the internal thread is disposed in the screw hole of the thread end, and the external screw is a screw; the inner nut and the external thread are Cooperating, the screw cooperates with the internal thread; the depth of the screw hole is smaller than the thickness of the inner nut.
  • the two threads on the screw are externally threaded, the connection is stepped, and the diameter of one of the external threads near the end of the screw is smaller than the diameter of the other external thread; the inner nut is matched with the external thread with a large diameter, the external screw
  • the head is a nut that cooperates with an external thread having a small diameter; the inner diameter of the inner nut is larger than the outer diameter of the outer diameter of the small diameter.
  • the shape design of the contact surface of the inner nut and the outer screw head increases the contact area, enhances the anti-loose ability, reduces the original material under the condition of achieving the same stress, and reduces the production cost.
  • the inner nut and the outer screw head are closely matched, and the smooth contact surface is added with organic oil, thereby increasing the sealing protection of the thread, so that the thread is not in contact with air or water, preventing the growth.
  • Rust is also easy to disassemble; at the same time, the smooth surface is easy to process and easy to use.
  • the inner nut of the present invention is a stressed body, and its thickness and cross-sectional area can be calculated by using appropriate specifications to reduce unsafe factors and save raw materials.
  • the external screw head of the invention has the functions of sealing the thread with the inner nut, preventing the thread from rusting and preventing the inner nut from loosening, and also has the auxiliary force acting.
  • the depth of the screw hole is smaller than the thickness of the inner nut to prevent the shear stress of the fastened object from being lowered due to the excessively large screw hole.
  • Figure 1 is a schematic view of the overall structure of the present invention.
  • FIG. 2 is a schematic structural view of another embodiment of the present invention.
  • a locking rust-proof bolt fastener includes a screw 1 and an inner nut 2 , and further includes a nut 3 .
  • the threaded end of the screw is provided with two external threads with opposite rotation directions, and the joint is
  • the stepped shape has a diameter of a portion of the external thread near the end of the screw smaller than the diameter of the other portion of the external thread; the inner nut 2 cooperates with the external thread having a large diameter, and the nut 3 cooperates with the external thread having a small diameter.
  • the inner nut 2 is in close contact with the nut 3, and the end face of the contact is shaped
  • the bevel of a certain degree of inclination, the inclination angle of the inclined surface is 30° ⁇ 50°, the purpose is to save material and reduce weight without reducing the contact area between the inner nut 2 and the nut 3 and the screw thread.
  • the contact surface of the inner nut 2 and the nut 3 is a smooth surface, and is coated with organic oil to increase the sealing property of the screw thread, avoid contact with air and water, and rust, and is easy to disassemble.
  • the screw 1 is inserted into the hole of the object to be fastened, the fastened object is fastened with the inner nut 2, and the oppositely screwed nut 3 is screwed to be tightly coupled with the inner nut 2. If the screw 1 is slightly longer and the nut 3 and the inner nut 2 are not tightly coupled, a washer may be added to the unthreaded end of the screw; if the screw 1 is slightly shorter, the inner nut 2 and the nut 3 may be inserted into a few wires.
  • the inner nut 2 must be reversed. Since the nut 3 and the inner nut 2 are oppositely rotated, the rotation of the inner nut 2 is prevented, and self-locking is achieved, so that it is firm and reliable, and can prevent looseness.
  • FIG. 2 is another embodiment of the present invention, including a screw 1, an inner nut 2, and a screw 4.
  • the screw end of the screw 1 is provided with a screw hole 5, and the threaded end of the screw 1 is provided with two segments.
  • the threads of opposite rotation directions are respectively an external thread and an internal thread, and the internal thread is disposed in the screw hole 5 of the thread end; the inner nut 2 is matched with the external thread, and the screw 4 is matched with the internal thread.
  • the inner nut 2 is in close contact with the screw 4, and the end face of the contact is shaped as a bevel having a certain degree of inclination, and the inclination angle of the inclined surface is 30° to 50°.
  • the contact surface of the inner nut 2 and the screw 4 is a smooth surface and coated with organic oil.
  • the depth of the screw hole 5 described above is smaller than the thickness of the inner nut 2.
  • the screw 1 is inserted into the hole of the fastened object, the fastened object is fastened with the inner nut 2, and the oppositely screwed 4 is screwed to be tightly coupled with the inner nut 2.
  • the inner nut 2 must be reversed due to the screw of the screw 4 and the inner nut 2. The rotation of the thread is reversed, which prevents the rotation of the inner nut 2 and realizes self-locking, so it is firm and reliable, and can prevent looseness.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

L'invention concerne un dispositif de fixation sous forme de boulon verrouillable et antirouille comprenant un boulon (1), un écrou interne (2) et une tête de vis externe (3). Deux segments de filetage qui sont inversés dans une direction en spirale sont prévus au niveau de l'extrémité filetée du boulon. L'écrou interne est en contact étroit avec la tête de vis externe, et chacun d'entre eux vient respectivement en prise avec un des deux segments de filetage. Le filetage sur l'écrou couplé à l'écrou interne est un filetage interne ou externe. Une technique de verrouillage d'un écrou interne est utilisée dans l'invention, de sorte que le mouvement du dispositif de fixation soit restreint mais que celui-ci soit facile à désassembler. En outre, la protection de l'étanchéité pour le filetage est améliorée de manière à éviter que le filetage ne rouille.
PCT/CN2008/072084 2007-08-21 2008-08-21 Dispositif de fixation sous forme de boulon verrouillable et antirouille WO2009024093A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CNA2007101205102A CN101105195A (zh) 2007-08-21 2007-08-21 锁定式紧固螺栓
CN200710120510.2 2007-08-21
CNU200820108336XU CN201221545Y (zh) 2008-05-29 2008-05-29 一种双帽防松螺栓
CN200820108336.X 2008-05-29

Publications (1)

Publication Number Publication Date
WO2009024093A1 true WO2009024093A1 (fr) 2009-02-26

Family

ID=40377874

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/072084 WO2009024093A1 (fr) 2007-08-21 2008-08-21 Dispositif de fixation sous forme de boulon verrouillable et antirouille

Country Status (1)

Country Link
WO (1) WO2009024093A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106151205A (zh) * 2015-03-12 2016-11-23 盐城工业职业技术学院 组合止动螺钉
CN108908207A (zh) * 2018-08-30 2018-11-30 莱芜钢铁集团有限公司 一种锥面预应力杆拆卸工装及操作方法
CN110671414A (zh) * 2019-10-22 2020-01-10 张华� 一种自闭锁螺栓机构及其使用方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2057485U (zh) * 1989-09-07 1990-05-23 林建真 可靠防脱转螺杆螺母
CN2177120Y (zh) * 1993-07-17 1994-09-14 张吉林 防松防盗紧固螺栓
CN1197896A (zh) * 1997-04-30 1998-11-04 张德成 防螺帽倒退系统
CN2583424Y (zh) * 2002-11-13 2003-10-29 涂启莲 防松防滑螺栓
JP2006242351A (ja) * 2005-03-07 2006-09-14 Chiaki Nishihara ダブルナット、ボルトの緩み止め構造。
EP1534963B1 (fr) * 2002-06-06 2007-08-01 McConkey, James Ecrou et boulon de securite
CN101105195A (zh) * 2007-08-21 2008-01-16 北京三维正基科技有限公司 锁定式紧固螺栓

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2057485U (zh) * 1989-09-07 1990-05-23 林建真 可靠防脱转螺杆螺母
CN2177120Y (zh) * 1993-07-17 1994-09-14 张吉林 防松防盗紧固螺栓
CN1197896A (zh) * 1997-04-30 1998-11-04 张德成 防螺帽倒退系统
EP1534963B1 (fr) * 2002-06-06 2007-08-01 McConkey, James Ecrou et boulon de securite
CN2583424Y (zh) * 2002-11-13 2003-10-29 涂启莲 防松防滑螺栓
JP2006242351A (ja) * 2005-03-07 2006-09-14 Chiaki Nishihara ダブルナット、ボルトの緩み止め構造。
CN101105195A (zh) * 2007-08-21 2008-01-16 北京三维正基科技有限公司 锁定式紧固螺栓

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106151205A (zh) * 2015-03-12 2016-11-23 盐城工业职业技术学院 组合止动螺钉
CN108908207A (zh) * 2018-08-30 2018-11-30 莱芜钢铁集团有限公司 一种锥面预应力杆拆卸工装及操作方法
CN108908207B (zh) * 2018-08-30 2024-01-19 莱芜钢铁集团有限公司 一种锥面预应力杆拆卸工装及操作方法
CN110671414A (zh) * 2019-10-22 2020-01-10 张华� 一种自闭锁螺栓机构及其使用方法

Similar Documents

Publication Publication Date Title
WO2018098837A1 (fr) Écrou autobloquant biseauté
CN202065313U (zh) 螺纹紧固装置
CN201568427U (zh) 防松六角法兰螺钉
WO2015000318A1 (fr) Organe hélicoïdal mobile inviolable
NZ611853A (en) A nut assembly
WO2009024093A1 (fr) Dispositif de fixation sous forme de boulon verrouillable et antirouille
CN113669351A (zh) 一种防松螺纹副
CN205744807U (zh) 一种改良型防松动螺栓
CN201575036U (zh) 组合式防拆卸圆螺母
CN208089739U (zh) 一种螺栓组件及变速箱
CN109404397A (zh) 防松动螺母
CN214247952U (zh) 一种防松螺母
CN108194484A (zh) 一种便于锁紧且能防松的螺栓
CN2434471Y (zh) 整体式防松防盗螺帽
CN112727868A (zh) 偏心双自锁螺母
CN219975103U (zh) 一种可防松脱的螺栓、螺母组件
CN219975108U (zh) 一种防松脱的螺栓、螺母紧固组件
KR20130139050A (ko) 체결력을 높인 볼트너트 결합체
CN112780657A (zh) 双螺纹防松螺栓
CN111473035A (zh) 一种止动槽螺母防松装置
CN214146211U (zh) 一种对顶螺母防松螺丝
CN219101836U (zh) 一种螺纹防松装置
CN221299779U (zh) 一种螺母锁紧结构
CN213839220U (zh) 一种逆向双牙防松螺栓结构
CN207975108U (zh) 一种高效防松的螺母

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08784075

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08784075

Country of ref document: EP

Kind code of ref document: A1