To provide a bearing member for an electric parking brake which can achieve improvement of power transmission efficiency and improvement of strength or durability.SOLUTION: The invention relates to a bearing member used for an electric parking brake 9 including a speed reduction mechanism 3, a gear body 4 which houses the speed reduction mechanism 3, and a conversion mechanism 5 which converts rotational motion of a shaft 31 into linear motion of a piston 61. The bearing member includes: a resin bearing fixing part 11 provided at the gear body 4 and having a through hole 11a into which the shaft 31 is inserted; a metallic annular member 12 embedded in the bearing fixing part 11 so as to form a part of the through hole 11a; and a bearing 13 which is fixed to the annular member 12 while applying a pressure force to an inner peripheral surface of the annular member 12 and rotatably supports the shaft 31. A radial thickness W1 of the annular member 12 is larger than a radial thickness W2 of the bearing 13 located at the inner periphery side of the annular member 12.SELECTED DRAWING: Figure 3
【課題】動力伝達効率の向上と、強度又は耐久性の向上との両立が可能な電動パーキングブレーキ用軸受部材を提供する。【解決手段】本発明は、減速機構3と、減速機構3を収容するギヤボディ4と、シャフト31の回転運動をピストン61の直線運動に変換する変換機構5と、を備える電動パーキングブレーキ9に用いられる軸受部材であって、ギヤボディ4に設けられ、シャフト31が挿通される貫通孔11aを有する樹脂製の軸受固定部11と、貫通孔11aの一部を形成するように軸受固定部11に埋め込まれた金属製の環状部材12と、環状部材12の内周面に押圧力を加えた状態で環状部材12に固定され、シャフト31を回転可能に支持するベアリング13と、を備え、環状部材12の径方向の厚みW1は、環状部材12の内周側に位置するベアリング13の径方向の厚みW2よりも大きい。【選択図】図3
BEARING MEMBER FOR ELECTRIC PARKING BRAKE
電動パーキングブレーキ用軸受部材
2021-09-16
Patent
Electronic Resource
Japanese
ELECTRIC PARKING BRAKE DRIVING DEVICE AND ELECTRIC PARKING BRAKE DEVICE
European Patent Office | 2016
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