APPAREIL DE SÉCURITÉ CAPABLE DE VERROUILLER AUTOMATIQUEMENT UN LEVIER D'ACTIONNEMENT ET DE RÉALISER UN DÉVERROUILLAGE PAR UN BOUTON À UTILISER DANS UNE TONDEUSE
NINGBO DAYE GARDEN EQUIPMENT STOCK COMPANY LTD.;宁波大叶园林设备股份有限公司
发明人:
SU, Ke,苏克
申请号：
CNCN2016/000415
公开号：
WO2017/214755A1
申请日:
2016.09.26
申请国别(地区):
CN
年份:
2017
代理人:
摘要：
Disclosed is a safety apparatus capable of automatically locking an operating lever and realizing unlocking by a button for use in a mowing machine. An oblique plane with an upper plane included angle of 25-35 degrees is provided on an oblique hook (98t) of a lock hook； a penetration surface (99t) is provided below the rear end part of the oblique hook (98t), wherein an external contour of the rear end part is in a function curve shape, a tangent plane is provided below the external contour of the rear end part, a right-view included angle of the tangent plane is 27 - 42 degrees, a bottom-view included angle is 17.5 - 23.5 degrees, and the function curve shape and the tangent plane jointly constitute the penetration surface (99t) so as to facilitate automatic locking of the operating lever； and oblique teeth I (97t) are provided on the lock hook (85t), wherein oblique teeth II (87t) of a wedged push block (88t) of a safety button (82t) are engaged with the oblique teeth I (97t) of the lock hook so as to enable the lock hook (85t) to rotate. The function curve shape is a logarithmic spiral or a cubic curve. The engagement of the oblique teeth II (87t) of the wedged push block (88t) is performed according to a hypoid gear. The oblique teeth I (97t) of the lock hook (85t) are a conical surface secondary-enveloped worm pair or a section of an oblique tooth primary-enveloped worm gear. The safety apparatus capable of automatically locking an operating lever and realizing unlocking by a button for use in a mowing machine is safe and reliable, and complies with the rule that an operator uses the button with the right hand while using the operating lever with the left hand so as to solve the problem of occasional failure.L'invention concerne un appareil de sécurité capable de verrouiller automatiquement un levier d'actionnement et de réaliser un déverrouillage par un bouton, destiné à être utilisé dans une tondeuse. Un plan oblique avec un angle inclus de plan supérieur de
