PROBLEM TO BE SOLVED: To provide a nonreturn valve for a negative pressure type booster that suppresses generation of vibration and abnormal sound (contact sound) of the nonreturn valve originating in negative pressure pulsation.SOLUTION: A nonreturn valve 10 for a negative pressure type booster includes: a main body 11 assembled to a negative pressure introduction port 3; a first passage 111c, an accommodation part 112a and a second passage 112b; a valve seat 12 formed in the first passage 111c; a valve body 13 accommodated in the accommodation part 112a; and a spring 15 energizing the valve body 13 toward the valve seat 12. Further, the nonreturn valve 10 includes a vibration absorption part 16 where a portion of the valve body 13 absorbs a larger amount of vibration applied to the valve body 13 compared to other portions of the valve body 13, in a seated state when the valve body 13 is seated on the valve seat 12.SELECTED DRAWING: Figure 2

    【課題】負圧脈動に起因する逆止弁の振動及び異音(当接音)の発生を抑制する負圧式倍力装置用逆止弁を提供すること。【解決手段】負圧式倍力装置用逆止弁10は、負圧導入口3に組み付けられた本体11と、第一通路111c、収容部112a及び第二通路112bと、第一通路111cに形成される弁座12と、収容部112a内に収容される弁体13と、弁体13を弁座12に向けて付勢するスプリング15とを備えている。そして、逆止弁10は、弁体13が弁座12に着座している着座状態時に、弁体13の一部分が弁体13の他部分に比して弁体13に加わる振動をより多く吸収する振動吸収部16を備えている。【選択図】図2


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    Title :

    NONRETURN VALVE FOR NEGATIVE PRESSURE TYPE BOOSTER


    Additional title:

    負圧式倍力装置用逆止弁


    Contributors:

    Publication date :

    2018-02-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F16K VALVES , Ventile



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