PROBLEM TO BE SOLVED: To provide a vehicle weight measuring device capable of managing pressure inside a hydraulic chamber at a constant value even when a pressure sensor is fixed with screws.SOLUTION: A vehicle weight measuring device comprises: a hydraulic discharge port section 240 which has a bottom plate 200 brought into contact with an arm of a suspension device, a piston 300 capable of pressing a diaphragm 230 forming a hydraulic chamber 201 at an upper surface side of the bottom plate, and a pressure sensor 400 detecting pressure of measurement object fluid (hydraulic oil) R in the hydraulic chamber at a lower surface side of the bottom plate, and communicates an inner side of the hydraulic chamber with an atmospheric side and can discharge excessive hydraulic oil inside the hydraulic chamber; and a sealing section 242 which seals the hydraulic discharge port section after balancing inner pressure with atmospheric pressure.SELECTED DRAWING: Figure 2
【課題】圧力センサをネジによって固定する場合であっても、油室内の圧力を一定に管理可能な重量測定装置を提供する。【解決手段】懸架装置のアームに接するボトムプレート200と、ボトムプレートの上面側で油室201を形成するダイアフラム230を押圧可能なピストン300と、ボトムプレートの下面側で油室の測定流体(作動油)Rの圧力を検出する圧力センサ400とを含み、油室内側と大気側とを連通し、油室内部の過剰な作動油を排出可能な油排出孔部240と、油排出孔部に備えられ、過剰な測定流体(作動油)を排出し、荷重の掛かっていない状態で、内部圧力を大気圧に平衡させた後、前記油排出孔部を封鎖する封鎖部242とを備えた。【選択図】図2
VEHICLE WEIGHT MEASURING DEVICE
車両の重量測定装置
2018-02-01
Patent
Electronic Resource
Japanese