发明名称 Handheld power tool
摘要 A handheld power tool is disclosed. The handheld power tool has a drive oscillating along a working axis and a vibration damper. The vibration damper has a mass element suspended in a spring mechanism. The spring mechanism acts with a first spring stiffness and acts with a second spring stiffness. The first spring stiffness is different from the second spring stiffness.
申请公布号 US8985236(B2) 申请公布日期 2015.03.24
申请号 US201113222724 申请日期 2011.08.31
申请人 Hilti Aktiengesellschaft 发明人 Wierer Michael;Scherrer Adrian;Martin Fabian;Althaus Josef
分类号 B25D17/24;B25D17/04 主分类号 B25D17/24
代理机构 Crowell & Moring LLP 代理人 Crowell & Moring LLP
主权项 1. A handheld power tool, comprising: a drive, wherein the drive is oscillatable along a working axis of the handheld power tool; and a vibration damper, wherein the vibration damper includes: a housing;a spring mechanism; anda mass element suspended in the spring mechanism;wherein the spring mechanism and the suspended mass element are mounted in the housing;wherein the spring mechanism is actable with a first spring stiffness on the mass element in response to a deflection of the mass element out of a basic position and in a first direction parallel to the working axis;wherein the spring mechanism is actable with a second spring stiffness on the mass element in response to a deflection out of the basic position and in a second direction, wherein the second direction is opposite from the first direction;wherein the first spring stiffness is different from the second spring stiffness;and wherein the spring mechanism and the suspended mass element is coordinated with a natural frequency which is greater by less than 10% to a rate of repetition of a striking mechanism of the handheld power tool.
地址 Schaan LI