WO2023029019A1 - Contre-écrou du type à boucle - Google Patents

Contre-écrou du type à boucle Download PDF

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Publication number
WO2023029019A1
WO2023029019A1 PCT/CN2021/116571 CN2021116571W WO2023029019A1 WO 2023029019 A1 WO2023029019 A1 WO 2023029019A1 CN 2021116571 W CN2021116571 W CN 2021116571W WO 2023029019 A1 WO2023029019 A1 WO 2023029019A1
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WO
WIPO (PCT)
Prior art keywords
nut
loosening
thread
ring
effect
Prior art date
Application number
PCT/CN2021/116571
Other languages
English (en)
Chinese (zh)
Inventor
叶春林
Original Assignee
叶春林
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 叶春林 filed Critical 叶春林
Priority to PCT/CN2021/116571 priority Critical patent/WO2023029019A1/fr
Priority to US18/178,939 priority patent/US20230204066A1/en
Publication of WO2023029019A1 publication Critical patent/WO2023029019A1/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
    • 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
    • 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
    • F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts

Definitions

  • the invention relates to the field where looseness needs to be prevented in commonly used bolts and nuts, in particular to a collar-type locknut.
  • HardLock is a double-nut anti-loosening structure. In reality, it is often limited by the use of space, and a single nut also has anti-loosening requirements.
  • the purpose of the present invention is to solve the problem of preventing nuts from loosening in the prior art, and provide a ring-type anti-loosening nut that is reasonable, reliable, easy to operate, strong in versatility and suitable for single, double and multi-nut use.
  • a ring type locknut which includes a nut with a truncated cone-shaped internal thread cavity and an outer truncated cone-shaped annular member arranged in it.
  • an eccentric value is set to eliminate the thread fit gap, and the formed eccentric structure interacts with the taper thread of the nut cavity, so that the ring-shaped member rotates together with the nut.
  • the taper of the frustum-shaped internal thread cavity and the conical ring member of the frustum-shaped internal and external thread are selected to meet the progressive locking structural conditions of the tapered thread;
  • the tapered thread structure can be selected according to the size of the nut. Different from the application occasion, it is set as a progressive cam structure with continuous or intermittent annular uniform distribution; the thread clearance and nominal size mentioned refer to the standard size of the nut or non-standard design according to needs.
  • the locking surface of the single-structure nut or the matching double nut can be set in a one-way anti-loosening structure shape, so as to enhance the anti-loosening effect of the nut.
  • a ring-shaped anti-loosening elastic washer that matches the one-way anti-loosening and anti-loosening structure under the nut provided with a one-way anti-retreat and anti-loosening structure, so as to facilitate the anti-loosening of the enhanced nut more reliably effect.
  • the nut can be designed in a form of enlarging the overall structural size to a special specification, so as to enhance the anti-loosening effect of the nut more reliably.
  • the ring-shaped component of the single ring-type anti-loosening nut can be arranged on another nut to form an effective anti-loosening structure of a double-nut combination.
  • the present invention grasps the key point of solving the problem, and with a reasonable, simple, reliable and easy-to-operate structure, it makes good use of the feature that the nut plays its role mainly on the first and second teeth of its locking surface during use, and has a single
  • the structural nut is equivalent to adding a combined locking setting of a tapered thread and an eccentric structure on the premise of retaining its original locking effect, and makes the ring member and the outer nut synchronously locked , that is, it can be carried and stored in an integrated combination without additional processes, ensuring convenient and reliable anti-loosening effect. Since the functional effect structure is all on the same nut, the characteristics of the tapered thread and the torque of the ultra-small part, It will not cause substantial damage to the bolts.
  • the present invention can not only achieve practical effects on the basis of standard parts specifications, but also provide a better choice for applications and limited use of space. Its practical effect can be improved by enlarging the design size of the overall structure; if the present invention adopts a double nut structure, no matter whether it is to choose a superimposed form or a slightly mutated form, it is equal to having four sections and can stagger the force positions or three
  • the effectiveness of the segmented multiple combination locking structure fully embodies the structural characteristics of the present invention and the active flexibility in solving technical problems. It is a reasonable and compact structural setting to achieve the expected anti-loosening effect.
  • the present invention has the following beneficial effects: by identifying the effective method for solving the problem and grasping the essential point of solving the problem, with the structural features that are reasonable, simple and easy to implement, by combining the tapered thread and the eccentric structure from various aspects to complement each other Lock the bolts to achieve the practical and reliable effect that the nuts will not loosen when they are locked.
  • Fig. 1 is a schematic diagram of a single structure of a collar-type locknut according to the present invention.
  • Fig. 2 is a schematic diagram of a slightly modified structure of a collar-type locknut according to the present invention.
  • a ring-type locknut which will be further described in conjunction with the schematic diagram below.
  • Embodiment 1 As shown in Figure 1, it is a single structure of a ring-type locknut, which is provided with a truncated cone-shaped internal thread cavity on the nut, making it a cavity nut 1 as a whole.
  • the cavity of the cavity nut 1 is provided with a ring member 2 of a truncated cone-shaped internal and external thread, where the taper of the tapered thread is set to 3 degrees, and the internal thread of the ring member 2 and the Between the external threads, set an eccentric value based on eliminating the gap between the standard threads, that is, this value is the specification size of the nut—the gap between the internal thread and the bolt 3, and also takes into account the frustum-shaped internal thread and the ring member 2
  • the matching clearance of the tapered external thread enables the annular member 2 to be screwed into the bolt together with the nut for locking, with the function of the original nut structure formed and preserved, the eccentricity of the annular member 2 and the multiple characteristic structure of the tapered
  • the structural features of the present invention can obviously be designed as non-standard products according to actual needs by increasing the size, and the present invention can be used in a superimposed double-nut structure to strengthen the nut lock
  • the eccentric value of the gap", the 3 degrees and the eccentric value mentioned here can adjust this selected value according to the specific application occasions, such as the unilateral interference type selection where the eccentric value can tend to be large; due to the truncated cone thread structure of the present invention characteristics, in addition, the overall structural function effect is realized in the same nut, and the eccentric value of the annular member 2 due to the comprehensive stress relationship will not cause substantial damage to the bolt 3, and if the present invention uses a double nut structure for Anti-loosening, the actual formation of a four-stage locking structure with staggered force positions, compared with the usual double-nut anti-loosening structure, has more prominent structural and functional advantages.
  • Embodiment 2 As shown in Figure 2, a slightly changed structure of the ring type lock nut is actually designed with the standard size of the standard nut, and the concave cavity nut 1 in this embodiment is the same as that in the embodiment The structural features of 1 have not changed in any way, but the ring-shaped member part in embodiment 1 is added to another nut, thereby forming the boss nut 2.
  • the structural and functional effects of the double nuts are the same as those of the embodiment 1 are slightly different but each has its own strengths, the overall structure and efficacy are also worthy of recognition, and can be selected for different needs; in order to meet the needs of different occasions, the boss part thread on the boss nut 2 can be set to be the same as the main body nut
  • the screw threads form a structure that staggers a synchronous difference.
  • there are also several samples of this structure. The selected deviation is about 90 degrees, and the locking effect is good, and this asynchronous difference can be adjusted according to different applications. If the present embodiment is to enhance the substantive effect, obviously it can also be designed as a non-standard product according to actual needs to increase the size.

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

Abstract

La présente invention concerne un contre-écrou du type à boucle. Le contre-écrou du type à boucle comprend un écrou comportant une cavité concave à filetage interne de forme tronconique, et un élément annulaire de forme tronconique externe agencé dans l'écrou, une valeur excentrique pour éliminer un jeu d'ajustement de filetage étant établie entre un filetage interne et un filetage externe conique de l'élément annulaire, de telle sorte que, sous les fonctions d'une structure excentrique formée et d'un filetage conique de la cavité concave de l'écrou, lorsque l'élément annulaire est vissé dans un boulon conjointement avec l'écrou pour le verrouillage, les performances de verrouillage d'un écrou unique sont conservées, et un effet global est également obtenu au moyen d'une structure à caractéristiques multiples. Selon la présente invention, en identifiant un procédé efficace pour résoudre un problème et en saisissant les points essentiels pour résoudre le problème, en utilisant des caractéristiques structurales rationnelles et simples qui sont facilement mises en œuvre, et en combinant le filetage conique et la structure excentrique pour verrouiller le boulon à la façon d'une boucle et d'une manière complémentaire de multiples façons, l'effet pratique et fiable grâce auquel l'écrou ne peut pas être desserré lorsqu'il est verrouillé est obtenu.
PCT/CN2021/116571 2020-09-06 2021-09-04 Contre-écrou du type à boucle WO2023029019A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2021/116571 WO2023029019A1 (fr) 2021-09-04 2021-09-04 Contre-écrou du type à boucle
US18/178,939 US20230204066A1 (en) 2020-09-06 2023-03-06 Single ring type locknut assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/116571 WO2023029019A1 (fr) 2021-09-04 2021-09-04 Contre-écrou du type à boucle

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/178,939 Continuation-In-Part US20230204066A1 (en) 2020-09-06 2023-03-06 Single ring type locknut assembly

Publications (1)

Publication Number Publication Date
WO2023029019A1 true WO2023029019A1 (fr) 2023-03-09

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PCT/CN2021/116571 WO2023029019A1 (fr) 2020-09-06 2021-09-04 Contre-écrou du type à boucle

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WO (1) WO2023029019A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6000875A (en) * 1996-01-22 1999-12-14 Shap, Inc. Mounting device
CN105626660A (zh) * 2016-03-25 2016-06-01 罗灿 独立可控松紧套防松螺母
CN105937538A (zh) * 2016-05-20 2016-09-14 李武彬 一种防松螺母的结构及其防松调节方法
CN110425213A (zh) * 2019-08-23 2019-11-08 汪军 一种新型防松螺栓
CN111365352A (zh) * 2020-03-31 2020-07-03 叶春林 简便型防松螺母
CN111963551A (zh) * 2020-09-06 2020-11-20 叶春林 环套式防松螺母
CN112032177A (zh) * 2020-09-20 2020-12-04 叶春林 环扣错开式防松螺母

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6000875A (en) * 1996-01-22 1999-12-14 Shap, Inc. Mounting device
CN105626660A (zh) * 2016-03-25 2016-06-01 罗灿 独立可控松紧套防松螺母
CN105937538A (zh) * 2016-05-20 2016-09-14 李武彬 一种防松螺母的结构及其防松调节方法
CN110425213A (zh) * 2019-08-23 2019-11-08 汪军 一种新型防松螺栓
CN111365352A (zh) * 2020-03-31 2020-07-03 叶春林 简便型防松螺母
CN111963551A (zh) * 2020-09-06 2020-11-20 叶春林 环套式防松螺母
CN112032177A (zh) * 2020-09-20 2020-12-04 叶春林 环扣错开式防松螺母

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