| 摘要 |
PURPOSE: A hydraulic coupler is provided to enable the connection of a short hydraulic hose without oil leakage by extending the hydraulic hose using a hydraulic hose extension unit. CONSTITUTION: A hydraulic coupler comprises a male coupler and a large-diameter coupling member(70). The male coupler is coupled to a connection member(11) installed on an end of a hydraulic hose(10), and the male coupler comprises a leakage prevention unit which prevent the leakage of hydraulic pressure using the elasticity of a spring and a housing(50). The large-diameter coupling member is inserted to the outer periphery of the housing and fixed through thread coupling.
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