公开(公告)号：US5871059A

公开(公告)日：1999-02-16

申请号：US607936

申请日：1996-02-28

Applicant: Mitsuyoshi Shibata ,  Masaki Sakuraghi ,  Yoshihiro Kasuya

Inventor： Mitsuyoshi Shibata ,  Masaki Sakuraghi ,  Yoshihiro Kasuya

IPC: B25D17/24 ,  B25D11/00 ,  B25D11/12 ,  B25D9/04

CPC classification number: B25D11/005 ,  B25D11/125 ,  B25D2211/003 ,  B25D2250/191

Abstract: The present invention realizes effective recoil reduction and idling strike prevention with a minimum constitution. In a tool holder (6), a thermal-resistant O-ring (22) is arranged between two steel washers (21,23) near the joint to the barrel (5). The O-ring (22) has a cross-sectional diameter of approximately 7 mm. The inner diameter of the O-ring (22) is made slightly greater than the diameter of a cylindrical portion (19b) formed at the rear of an intermediate element (19) and slightly smaller than the diameter of a flange (19a) formed at the rear of the cylindrical portion (19b). Likewise, the inner diameter is made slightly greater than the diameter of a recess (18b) of a striking member (18) formed in front thereof and slightly smaller than the diameter of a flange (18a) formed in front of the recess (18b). The cylindrical portion (19b) of the intermediate element (19) is extended backward for such a distance that, when the cylindrical portion (19b) is fitted in the O-ring (22), the flange (19a) is positioned behind, and out of contact with, the O-ring (22).

Abstract translation: 本发明以最小的结构实现有效的后坐力减少和空转防止。 在工具架（6）中，在靠近枪管（5）的接头附近的两个钢垫圈（21,23）之间布置有耐热O形圈（22）。 O形环（22）的截面直径约为7mm。 O形环（22）的内径略大于形成在中间元件（19）的后部的圆柱形部分（19b）的直径，并且略小于形成在中间元件（19）上的凸缘（19a）的直径 圆柱形部分（19b）的后部。 同样地，使内径略大于形成在其前方的击打构件（18）的凹部（18b）的直径，并稍微小于形成在凹部（18b）前面的凸缘（18a）的直径， 。 中间元件（19）的圆柱形部分（19b）向后延伸一段距离，使得当圆柱形部分（19b）装配在O形环（22）中时，凸缘（19a）位于后面，并且 与O形圈（22）不接触。