公开(公告)号：US20030132581A1

公开(公告)日：2003-07-17

申请号：US10338674

申请日：2003-01-09

申请人： HITACHI KOKI CO., LTD.

发明人： Kazunobu Yoshimura ,  Yuuichi Satou ,  Toshihiko Tachibana

IPC分类号： B23D051/10

CPC分类号： B23D51/10 ,  Y10S279/906 ,  Y10T83/9461 ,  Y10T279/17188 ,  Y10T279/17761 ,  Y10T279/17803

摘要： A blade attachment/detachment mechanism for detachably attaching a blade to a saber saw. An end portion of the blade is formed with a blade hole. A reciprocally movable plunger has a blade attachment end portion where a slit and a stepped hole are formed. The slit extends in a longitudinal direction of the blade, and the stepped hole extends in a direction perpendicular to the slit and intersects the slit. An engagement pin is provided in the stepped hole. The engagement pin is engageable with the blade hole to fix the blade to the plunger when the blade end is inserted into the slit. For moving the engagement pin, a knob is pivotally supported to the blade attachment end portion, and a torsion spring is provided to bias the knob in a blade attaching direction. The knob has a slanted surface in engagement with the engagement pin. When the knob is pivotally moved to the blade attaching direction by the biasing force of the torsion spring, the slanted surfaces pushes the engagement pin to maintain engagement with the blade hole. When the knob is manually moved in an opposite direction, the urging force of the slanted surface toward the engagement pin is reduced. The engagement pin is also biased by a compression spring, so that the engagement pin is disengaged from the blade hole by the biasing force of the compression spring.

摘要翻译： 一种用于将刀片可拆卸地附接到刀锯的刀片附接/拆卸机构。 叶片的端部形成有叶片孔。 可往复运动的柱塞具有形成狭缝和台阶孔的叶片安装端部。 狭缝沿叶片的纵向方向延伸，并且阶梯孔沿垂直于狭缝的方向延伸并与狭缝相交。 一个接合销设置在阶梯孔中。 当刀片端部插入狭缝中时，接合销可与刀片孔接合，以将刀片固定到柱塞上。 为了移动接合销，将旋钮枢转地支撑到刀片附接端部，并且提供扭簧以沿刀片附接方向偏置旋钮。 旋钮具有与接合销接合的倾斜表面。 当旋钮通过扭簧的偏置力枢转地移动到叶片附接方向时，倾斜表面推动接合销以保持与叶片孔的接合。 当手柄以相反的方向手动移动时，斜面朝向接合销的推动力减小。 接合销也被压缩弹簧偏压，使得接合销通过压缩弹簧的偏置力与叶片孔脱离。