ELECTRIC BRAKE DEVICE

• Main Authors: OGATA KIMITOSHI, TANIE HISAFUMI, ONO MASAHIKO, ONO KOSAKU
• Format: Patent
• Language: English; Japanese
• Published: 04.02.2021
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; BRAKES; CLUTCHES; COUPLINGS FOR TRANSMITTING ROTATION; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

To provide an electric brake device which can suppress bending deformation generated at a constituent member while maintaining a contact state of a lock nut and a piston while permitting axial displacement with the piston.SOLUTION: An electric brake device comprises a piston 7 abutting on a brake pad 8, a screw shaft 5 for transmitting the rotation of an electric motor 4, and a lock nut 6 arranged inside the piston 7, moved by the rotation of the screw shaft 5, and pressing the piston 7. The lock nut 6 has a pressing part 6a for pressing the piston 7, a screwing cylinder part 6b screwed with the screw shaft 5, and an intermediate part 6c located between the pressing part 6a and the screwing cylinder part 6b. An elastic deformation part 23 which is lower than the other portion of the lock nut 6 in stiffness is formed at the intermediate part 6c.SELECTED DRAWING: Figure 2 【課題】ピストンとの軸ずれを許容しつつ、ロックナットとピストンの接触状態を維持しながら、構成部品に発生する曲げ変形を抑制することのできる電動ブレーキ装置を提供する【解決手段】ブレーキパッド８と当接するピストン７と、電動モータ４の回転を伝達するスクリューシャフト５と、ピストン７の内側に備えられ、スクリューシャフト５の回転により移動してピストン７を押圧するロックナット６とを備える。ロックナット６は、ピストン７を押圧する押圧部６ａと、スクリューシャフト５と螺合する螺合筒部６ｂと、押圧部６ａと螺合筒部６ｂとの間に位置する中間部６ｃとを有する。中間部６ｃには、ロックナット６の他の部分よりも剛性が小さい弾性変形部２３を形成した。【選択図】 図２