To reliably prevent a nut from loosening and falling under a condition where impact, vibration or the like continues intermittently.SOLUTION: A nut looseness prevention device 5 comprises a plurality of nuts 6 each of which is screwed onto a bolt 2 protruding from a rotary hub 1 to mount a rotor 3 on the rotary hub 1, and a binding band 11 wound around the plurality of nuts 6. An engagement groove 10 extending along a nut rotation direction is formed in a side peripheral surface of each nut 6. Under fastening, the binding band 11 is squeezed in a loop manner so that a band part 12 of the binding band 11 is fitted into the engagement groove 10 of each nut 6 arranged at equal intervals along a circumferential direction with respect to a rotation center of the rotor 3.SELECTED DRAWING: Figure 4
【課題】衝撃や振動等が断続的に継続する状況下でナットが緩み、ひいては脱落するのを確実に防止できるようにする。【解決手段】本発明のナット緩み止め具5は、回転ハブ1から突出するボルト2にねじ込んで回転体3を回転ハブ1に装着する複数のナット6と、複数のナット6に巻き付けられる結束バンド11とを備える。各ナット6の側周面には、ナット回転方向に沿って延びる係合溝10が形成される。締結下において、回転体3の回転中心に対して円周方向に沿って等間隔に並んだ各ナット6の係合溝10に、結束バンド11のバンド部12が嵌まるように、結束バンド11をループ状に絞める。【選択図】図4
NUT LOOSENESS PREVENTION TOOL AND NUT
ナット緩み止め具およびナット
2023-07-28
Patent
Electronic Resource
Japanese
IPC: | B60B VEHICLE WHEELS , Räder für Fahrzeuge / F16B DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES , Vorrichtungen zum Befestigen oder Sichern von Konstruktionselementen oder Maschinenteilen, z.B. Nägel, Bolzen, Schrauben, Sprengringe, Klemmen, Klammern oder Keile |
LOOSENESS DETECTION APPARATUS AND LOOSENESS DETECTION PROGRAM
European Patent Office | 2023
|Composite gasket for force indication and looseness prevention
European Patent Office | 2025
|High-looseness-prevention locking mechanism for luggage rack
European Patent Office | 2024
|