To provide a drum brake structure that is so constituted as to have a parking lever for electric parking brake arranged inside a drum, and that is suitable to prevent trouble caused in assembling or in an operation of the electric parking brake.SOLUTION: A drum brake structure A1 is so constituted that a parking lever 17 for electric parking brake and boss parts 53 of a hub bearing 5 are arranged inside a drum 12, and the parking lever 17 rotates around a predetermined rotary shaft 171 through the operation of an electric actuator 3 to be displaced radially inside the drum 12. A recessed part 54 is formed between adjacent boss parts 53, and a projection part 172 which enters the recessed part 54 in vehicle width-directional view to face the recessed part 54 across a predetermined gap is formed on an inner peripheral side of the parking lever 17.SELECTED DRAWING: Figure 1

    【課題】電動パーキングブレーキ用のパーキングレバーをドラムの内側に配置した構成において、組み付け時や電動パーキングブレーキの作動時に生じる不都合を防止するのに適したドラムブレーキ構造を提供すること。【解決手段】電動パーキングブレーキ用のパーキングレバー17およびハブベアリング5のボス部53がドラム12の内側に配置され、電動アクチュエータ3の作動によりパーキングレバー17が所定の回動軸171周りに回動してドラム12の径方向内側に変位するように構成されたドラムブレーキ構造A1において、隣接するボス部53の間に凹状部54が形成されており、パーキングレバー17の内周側には、車幅方向視において凹状部54に入り込み、当該凹状部54と所定の隙間を挟んで対向する凸状部172が形成されている。【選択図】図1


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    Title :

    DRUM BRAKE STRUCTURE


    Additional title:

    ドラムブレーキ構造


    Contributors:

    Publication date :

    2020-04-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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