WO2015170842A1 - Dispositif de fixation et rondelle élastique de dispositif de fixation - Google Patents

Dispositif de fixation et rondelle élastique de dispositif de fixation Download PDF

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Publication number
WO2015170842A1
WO2015170842A1 PCT/KR2015/003966 KR2015003966W WO2015170842A1 WO 2015170842 A1 WO2015170842 A1 WO 2015170842A1 KR 2015003966 W KR2015003966 W KR 2015003966W WO 2015170842 A1 WO2015170842 A1 WO 2015170842A1
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WO
WIPO (PCT)
Prior art keywords
spring washer
fastening device
contact
resistance
nut
Prior art date
Application number
PCT/KR2015/003966
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English (en)
Korean (ko)
Inventor
최성모
Original Assignee
서울시립대학교 산학협력단
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Publication date
Application filed by 서울시립대학교 산학협력단 filed Critical 서울시립대학교 산학협력단
Publication of WO2015170842A1 publication Critical patent/WO2015170842A1/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
    • F16B37/00—Nuts or like thread-engaging members
    • 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
    • F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/12—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring axial thrust in a rotary shaft, e.g. of propulsion plants

Definitions

  • the present invention relates to a fastening device and a spring washer of the fastening device, and more particularly, a fastening device capable of adjusting and monitoring the fastening force by measuring the axial force (fastening force) and effectively performing the nut loosening function and the locking function.
  • a spring washer of a fastening device is a fastening device capable of adjusting and monitoring the fastening force by measuring the axial force (fastening force) and effectively performing the nut loosening function and the locking function.
  • a spring washer that cuts a part of the washer to give elasticity, a toothed washer which is embossed on the fastening surface, and is fitted into a threaded portion of the bolt and a through hole formed in the radial direction of the nut.
  • the fastening nut is fastened to the outside by overlapping a pin member such as a split pin and further, a fastening nut, and a double nut using a fastening action between the two nuts and a frictional surface is widely used.
  • the spring washer 1 is sandwiched between the nuts 3 which are screwed into the male threaded portions 2a such as bolts 2 and the like, and deformed as the nuts 3 are tightened. It is a mechanical component that increases the strength of the assembly 4, 5 and the rigidity of the coupling by the elastic force, prevents loosening of the nut 3, and improves the locking function.
  • an object of the present invention is to enable the adjustment and monitoring of the tightening force by enabling the axial force (fastening force) to be measured by the electrical resistance changes according to the deformation of the spring washer and loosening of the nut It is to provide a fastening device and a spring washer of the fastening device that can effectively perform the prevention function and the locking function.
  • the fastening device for achieving the above object is a spring washer that is fitted to the threaded portion of the bolt and in close contact with the object to be separated and separated into one end and the other end, the one end and the other end is in contact with the electrode;
  • a nut having a seating groove into which a spring washer is fitted; It includes a resistance meter for connecting the electrode to measure the resistance according to the contact and separation of one end and the other end.
  • the side surface of one end part and the other end part can contact with an electrode, and the electrical resistance changes according to the area which the side part of one side part and the other end part contacts and isolates.
  • One end and the other end of the spring washer are provided with a plurality of electrode terminals, the electrical resistance may be changed in accordance with the contact and separation of the plurality of electrode terminals.
  • a band washer is formed in the spring washer along the longitudinal direction, and the band groove may be provided with a strain gauge.
  • a plurality of locking jaws may be formed at the end of the spring washer along the circumferential direction.
  • the bottom surface of the seating groove may be formed with a plurality of locking jaws that the end of the spring washer while forming a plurality of inclined surface deep in the circumferential direction.
  • the bottom surface of the seating groove is deepened along the circumferential direction, and may be deepened in multiple steps along the circumferential direction.
  • the resistance measuring device includes a calculation unit that converts the measured resistance into axial force.
  • the resistance meter includes a display unit displaying the measured resistance or the converted axial force.
  • Spring washer of the fastening device is a spring washer of the fastening device for measuring the axial force (fastening force) by the electrical resistance that changes according to the deformation of the spring washer, the spring washer is separated into one end and the other end and contact with each other electrode It is possible, and the radius increases from one end to the other end to open each other, and the height increases from one end to the other end to open each other.
  • an insulating layer is formed on the outer surface except for the contact surface where one end and the other end contact.
  • the contact surface is preferably the side of one end and the other end. The side may be formed as a vertical plane or an inclined plane.
  • the axial force (fastening force) can be measured by the electrical resistance that changes according to the deformation of the spring washer, and the tightening force can be adjusted and monitored, and the nut is prevented from loosening and locking function. There is an effect that can be performed effectively.
  • FIG. 1 is a block diagram showing a fastening device using a general spring washer.
  • FIG. 2 is a perspective view showing the fastening device according to the first embodiment of the present invention.
  • FIG. 3 is a perspective view illustrating the spring washer of FIG.
  • FIG. 4 is a cross-sectional view of one end and the other end of FIG.
  • FIG. 5 is a cross-sectional view showing another embodiment of the spring washer of FIG.
  • FIG. 6 is a perspective view showing still another embodiment of the spring washer of FIG.
  • (A)-(c) is explanatory drawing which shows the state which deforms as the spring washer of FIG. 2 is tightened with a nut.
  • FIG. 8 is a graph illustrating a state in which an electrical resistance changes according to a deformation of the spring washer of FIG. 2.
  • FIG. 9 is a perspective view showing another embodiment of the nut of FIG.
  • FIG. 10 is a perspective view showing another embodiment of the nut of FIG. 2.
  • FIG. 11 is a cross-sectional view of a portion of the seating groove of FIG. 10 along a circumferential direction;
  • 12 (a) and 12 (b) are working state diagrams of the fastening device of FIG.
  • FIG. 13 is a perspective view showing the fastening device according to the second embodiment of the present invention.
  • FIG. 14 is an elevational view of a portion of the spring washer of FIG.
  • 15A to 15C are explanatory views showing a state in which the spring washer of FIG. 13 is deformed as the spring washer is tightened by a nut to contact the electrodes.
  • FIG. 16 are operation state diagrams of the fastening device of FIG.
  • the fastening device 100 includes a spring washer 110, a nut 120, and a resistance meter 130.
  • the spring washer 110 is fitted to the threaded portion of the bolt (shown in FIG. 12) to be in close contact with the object to be fastened (shown in FIG. 12), and the washer body 111 has one end ( 112) and the other end 113, and is made of a high elastic material such as spring or stainless steel.
  • Spring washer 110 may be made of a conductive FRPC (Fiber Reinforced Plastic Compound, fiber reinforced plastic composite).
  • One end 112 and the other end 113 of the spring washer 110 is in contact with the electrode, the radius increases from one end 112 to the other end 113 is opened to each other, one end 112 In the other end 113 is increased in height to be separated from each other.
  • an insulating layer 111a is formed on the outer surface of the washer body 111 except for the contact surfaces 112a and 113a where the one end 112 and the other end 113 contact each other.
  • Contact surfaces 112a and 113a are side surfaces of one end 112 and the other end 113.
  • the contact surfaces 112a and 113a are perpendicular along the radial direction.
  • the spring washer 210 may contact one end 212 and the other end 213 with electrodes, and the one end 212 and the other end (
  • An insulating layer 211a is formed on the outer surface of the body 211 except for the contact surfaces 212a and 213a to which the 213 contacts, and the contact surfaces 212a and 213a are inclined surfaces inclined with respect to the radial direction.
  • the contact surfaces 212a and 213a of the inclined surface may be formed obliquely in three dimensions.
  • the contact surfaces 212a and 213a of the inclined surface are initially in contact with each other to facilitate slippage, and have an effect of preventing contact failure during contact of the contact surfaces 212a and 213a.
  • the contact surfaces 212a and 213a add frictional force in addition to the elastic deformation. There is an effect to increase.
  • a spring washer 310 has a band groove 315 formed on an outer surface thereof in the longitudinal direction (circumferential direction) of the body 311, and a strain gauge (not shown) in the band groove 315. ), It is also possible to measure the resistance to deformation of the spring washer by tightening the nut. The addition of a strain gauge allows for more accurate measurement of changes in clamping force (axial force).
  • Spring washer 110 is fitted to the threaded portion of the bolt (T), as shown in Figure 7 (a) to (c) as the nut is tightened, the radius of the other end 113 is reduced, the spring washer 110 While the inner surface of the () approaches the bolt (T), the height difference between one end 112 and the other end 113 is reduced.
  • the resistance is changed as shown in FIG.
  • FIG. 7A when the contact surfaces 112a and 113a of the one end 112 and the other end 113 are separated from each other, the resistance value is kept constant with high resistance (part A of FIG. 8).
  • the resistance starts to decrease from the point of contact of the contact surfaces 112a and 113a, and the resistance decreases more rapidly as the contact area increases (part b of FIG. 8),
  • FIG. 7C when the contact surfaces 112a and 113a come into full contact, the resistance value is kept constant with low resistance (part C of FIG. 8).
  • the resistance changes the axial force (fastening force) and the nut loosened state can be known.
  • the nut 120 has a seating groove 121 into which the spring washer 110 is fitted.
  • the side (121a) of the seating groove 121 is to increase the radius along the circumferential direction so that the outer circumferential surface of the spring washer 110 is in close contact.
  • the bottom surface 121b of the seating groove 121 is deepened in multiple stages along the circumferential direction, and a plurality of locking jaws 121c are formed at the ends of the spring washers.
  • the catching jaw 121c is more preferably formed in a sawtooth shape.
  • the nut 220 of the other embodiment has a side surface 221a of the seating groove 221 in which a radius increases along the circumferential direction so that the outer circumferential surface of the spring washer comes into close contact with the seating groove.
  • the bottom surface 221b of 221 forms an inclined surface that deepens along the circumferential direction, and has a configuration in which one locking jaw 221c is formed at an end of the bottom surface 221b.
  • the side surfaces 121a and 221a of the seating grooves 121 and 221 increase in radius along the circumferential direction so that the outer circumferential surface of the spring washer closes and hangs, so that the large radius side of the spring washer gradually decreases when the nut is tightened.
  • the nut is forced outward. Therefore, as the asymmetric friction increases, the tightening becomes greater, and the locking ability becomes larger.
  • the locking projections 121c and 221c of the seating grooves 121 and 221 increase the function of self locking. That is, when the nut is loosened, the nut is stretched by the elastic force of the spring washer and is caught by the locking jaws 121c and 221c, so that the nut is no longer loosened.
  • the nut 320 has a radius 321a increasing in the circumferential direction so that the outer circumferential surface of the spring washer closes to the seating groove 321.
  • the bottom surface 321b of the groove 321 has a configuration in which a plurality of locking jaws 321c are formed at the end portions of the spring washers while forming a plurality of inclined surfaces that deepen along the circumferential direction.
  • 11 is a cross-sectional view of a portion of the seating groove 321 of FIG. 10 along the circumferential direction.
  • the resistance meter 130 connects the wires with one end 112 and the other end 113 of the spring washer 110 as an electrode to provide resistance due to contact and separation between the one end 112 and the other end 113.
  • Measure The resistance meter 130 may include a calculator 131 for converting the measured resistance according to the deformation of the spring washer 110 into axial force (or tightening force), a display unit 132 for displaying the measured resistance or the converted axial force, and a resistance. And an operation unit 133 such as a switch for operating the measuring device 130.
  • the resistance measurer 130 may be connected to a computer by wire or wirelessly, and the calculator 131 may calculate the axial force according to a program according to the relationship between the deformation of the spring washer 110 and the axial force and resistance.
  • the display unit 133 may include an alarm device for notifying tightening and loosening according to the change in the axial force.
  • the fastening device 100 has a spring washer at the threaded portion of the bolt T passing through the object A and B as shown in FIG. While inserting the (110) while inserting the nut 120, the spring washer 110 is seated in the seating groove 121 of the nut 120 and the radius of the other end 113 side of the spring washer 110 as tightened As a result, the inner surface of the spring washer 110 approaches the bolt T, while the height difference between the one end 112 and the other end 113 is reduced, as shown in FIG. , B) is completed.
  • the change in the axial force due to tightening and loosening of the nut 120 is calculated by the calculation unit 131 according to the conversion of the resistance measured by the resistance meter 130 according to the operation of the operation unit 133, the display unit 132 Is displayed.
  • the fastening device enables the adjustment and monitoring of the fastening force by enabling the axial force measurement with the electric resistance which changes according to the deformation of the spring washer.
  • FIG. 13 is a perspective view showing a fastening device according to a second embodiment of the present invention
  • FIG. 14 is an elevation view showing a part of the spring washer of FIG. 13
  • FIGS. 15A to 15C show the spring of FIG. 13. It is explanatory drawing which shows the state which an electrode contacts with a deformation
  • the fastening device 500 according to the second embodiment of the present invention includes a spring washer 510, a nut 520, and a resistance meter 530, and one end of the spring washer 510. A plurality of electrode terminals 512 and 513 are provided at the other end.
  • the spring washer 510 is fitted to the threaded portion of the bolt (shown in FIG. 16) to be in close contact with the object to be fastened (shown in FIG. 16), and the washer body 511 is separated into one end and the other end, and is made of a non-conductive material. Can be done.
  • One end of the spring washer 510 is formed with an electrode terminal 512 on one side, and the other end of the spring washer 510 contacts the electrode terminal 512 on one side according to the deformation of the spring washer 510.
  • the electrode terminal 513 is formed to protrude.
  • One end and the other end of the spring washer 510 has the same radius as each other, and the height (thickness direction) increases from one end to the other end to be separated from each other.
  • the electrode terminals 512 and 513 are formed of a plurality of strings, and as shown in FIGS. 15A to 15C, height differences of one end and the other end decrease as the nuts are tightened, and the electrode terminals 512 are in contact with each other.
  • the number of contacts of 513 increases and the electrical resistance changes. In the present embodiment, only five electrode terminals are shown as an example for explanation.
  • the nut 520 has a seating groove 521 to which the spring washer 510 is fitted.
  • the depth of the mounting groove 121 is the same.
  • the resistance meter 530 measures the resistance according to contact and separation of the electrodes 512 and 513 by connecting the electrode terminals 512 and 513 of the spring washer 510 with wires.
  • the resistance measuring unit 530 may include an operation unit 531 for converting the resistance measured according to the deformation of the spring washer 510 into axial force (or tightening force), a display unit 532 for displaying the measured resistance or converted axial force, and a resistance. And an operation unit 533 such as a switch for operating the measuring instrument 530.
  • the fastening device 500 according to the second embodiment of the present invention configured as described above has a spring washer at the threaded portion of the bolt T passing through the object A and B as shown in FIG. 510 is fitted while the nut 520 is inserted so that the spring washer 510 is seated in the seating groove 521 of the nut 520 and, as tightened, the height between the other end and one end of the spring washer 510.
  • the fastening of the objects A and B is completed as shown in Fig. 16B.
  • the change in the axial force due to tightening and loosening of the nut 520 is calculated by the calculation unit 531 in accordance with the conversion of the resistance measured by the resistance meter 530 in accordance with the operation of the operation unit 533, the display unit 532 Is displayed.
  • the spring washer of the fastening device and the fastening device of the present invention enables the adjustment and monitoring of the fastening force by enabling the axial force (fastening force) to be measured by the electric resistance that changes according to the deformation of the spring washer, and effectively performs the anti-loosening function and the locking function of the nut. It is a very useful invention.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

La présente invention concerne un dispositif de fixation comprenant une rondelle élastique, un écrou et un résistivimètre. La rondelle élastique entre en contact étroit avec un objet fixé en étant accouplée par vissage avec une partie filetage d'un boulon et est divisée en une première partie extrémité et une autre partie extrémité, la première partie extrémité et l'autre partie extrémité entrant en contact l'une avec l'autre par l'intermédiaire d'une électrode et étant séparées l'une de l'autre à cause de la hauteur de la rondelle élastique qui augmente au fur et à mesure de la transition de la rondelle élastique de la première partie extrémité à l'autre partie extrémité. L'écrou comprend une rainure de montage dans laquelle la rondelle élastique est ajustée et montée. Le résistivimètre mesure la résistance en fonction du contact et de la séparation de la première partie extrémité et de l'autre partie extrémité en y connectant l'électrode. Cette configuration permet la mesure de force axiale par résistivité électrique qui varie en fonction de la déformation de la rondelle élastique, et ainsi une force de fixation peut être ajustée et surveillée et une fonction de prévention de libération et une fonction de verrouillage de l'écrou peuvent être réalisées efficacement.
PCT/KR2015/003966 2014-05-07 2015-04-21 Dispositif de fixation et rondelle élastique de dispositif de fixation WO2015170842A1 (fr)

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KR1020140053904A KR101532622B1 (ko) 2014-05-07 2014-05-07 체결장치와 체결장치의 스프링 와셔
KR10-2014-0053904 2014-05-07

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WO2015170842A1 true WO2015170842A1 (fr) 2015-11-12

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018024449A1 (fr) * 2016-08-01 2018-02-08 Fischerwerke Gmbh & Co. Kg Organe de fixation et procédé pour détecter un déplacement d'un organe de fixation
CN111043142A (zh) * 2018-10-11 2020-04-21 通用汽车环球科技运作有限责任公司 紧固组件
CN113311026A (zh) * 2021-05-27 2021-08-27 宁夏海豚智能科技有限公司 螺栓松动检测系统及方法
WO2022082269A1 (fr) * 2020-10-21 2022-04-28 Nord-Lock Switzerland Gmbh Dispositif et procédé pour déterminer la quantité d'application de force dans des composants de fixation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019045156A1 (fr) * 2017-08-31 2019-03-07 주식회사 코어볼트 Double écrou comprenant un élément de prévention de desserrage
CN113049168B (zh) * 2021-03-12 2022-12-09 北京英华达电力电子工程科技有限公司 一种风机网状螺栓预紧力监测装置
CN114526855A (zh) * 2022-02-21 2022-05-24 安徽农业大学 一种可便捷式调节的力学计量测试台
KR20240054756A (ko) 2022-10-19 2024-04-26 에스티에스 주식회사 풀림방지 기능을 가지는 4륜 구동용 트랜스퍼 케이스의 체결장치

Citations (4)

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Publication number Priority date Publication date Assignee Title
KR20000008654U (ko) * 1998-10-24 2000-05-15 김영환 체결 부재 풀림 감지구조
JP2006349011A (ja) * 2005-06-14 2006-12-28 Chugoku Electric Power Co Inc:The 締め忘れ防止締結具、これを備えた電気接続具および電気接続具の接続状態確認装置
JP2009064111A (ja) * 2007-09-04 2009-03-26 Mitsubishi Heavy Ind Ltd 部品管理具、部品状態管理方法及びシステム、並びに、ネジの締結状態管理方法及びシステム
KR101381869B1 (ko) * 2013-02-28 2014-04-07 한국철도기술연구원 수갑형 와셔를 이용한 볼트 및 너트의 풀림 상태 검지 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000008654U (ko) * 1998-10-24 2000-05-15 김영환 체결 부재 풀림 감지구조
JP2006349011A (ja) * 2005-06-14 2006-12-28 Chugoku Electric Power Co Inc:The 締め忘れ防止締結具、これを備えた電気接続具および電気接続具の接続状態確認装置
JP2009064111A (ja) * 2007-09-04 2009-03-26 Mitsubishi Heavy Ind Ltd 部品管理具、部品状態管理方法及びシステム、並びに、ネジの締結状態管理方法及びシステム
KR101381869B1 (ko) * 2013-02-28 2014-04-07 한국철도기술연구원 수갑형 와셔를 이용한 볼트 및 너트의 풀림 상태 검지 장치

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018024449A1 (fr) * 2016-08-01 2018-02-08 Fischerwerke Gmbh & Co. Kg Organe de fixation et procédé pour détecter un déplacement d'un organe de fixation
CN111043142A (zh) * 2018-10-11 2020-04-21 通用汽车环球科技运作有限责任公司 紧固组件
WO2022082269A1 (fr) * 2020-10-21 2022-04-28 Nord-Lock Switzerland Gmbh Dispositif et procédé pour déterminer la quantité d'application de force dans des composants de fixation
CN113311026A (zh) * 2021-05-27 2021-08-27 宁夏海豚智能科技有限公司 螺栓松动检测系统及方法

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