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    • 3. 发明授权
    • Power-driven hammer drill having an improved operating mode switch-over mechanism
    • 电动锤钻具有改进的操作模式切换机构
    • US06176321B1
    • 2001-01-23
    • US09395478
    • 1999-09-14
    • Takuo ArakawaToshiro HirayamaShin Nakamura
    • Takuo ArakawaToshiro HirayamaShin Nakamura
    • E02D702
    • B25D16/006B25D2211/003B25D2216/0023B25D2216/0038
    • A power-driven hammer drill 1 includes a rotary lever 8 for transmitting and disabling the transmission of the rotation of a motor 5 to a tool bit 4 and a slide lever 9 for transmitting and disabling the transmission of hammer blows to the tool bit 4. The rotary lever 8 is formed with a chamfer 52, whereas the slide lever 9 is formed with a straight portion 54 and a cut-out 53 which conforms to the circular edge of the rotary lever 8. When the slide lever 9 is in the lowermost position with the rotary lever 8 fitted in the cut-out 53, the rotary lever 8 is in the position to disconnect the rotation of the motor 5 to the tool bit 4, and while in this position, the slide lever 9 cannot be slid to its uppermost position, in which hammer blows cannot be transmitted to the tool bit 4. When the slide lever 9 is located in the uppermost position and the chamfer 52 of the rotary lever 8 is in the rearmost position, in which hammer blows cannot be transmitted to the tool bit 4 but rotation can be transmitted to the tool bit 4, the straight portion 54 opposes the chamfer 52 across a narrow gap so that the rotary lever 8 cannot be rotated to the rotation disabling position.
    • 电动锤钻1包括用于传送和禁止马达5的旋转传递到工具钻头4的旋转杆8和用于传递和禁止锤击锤击向工具钻头4的滑动杆9。 旋转杆8形成有倒角52,而滑动杆9形成有与旋转杆8的圆形边缘一致的直线部分54和切口53.当滑动杆9处于最下方时 旋转杆8安装在切口53中的位置,旋转杆8处于将马达5的旋转与工具4断开的位置,而在该位置,滑动杆9不能滑动到 其最高位置,其中锤击不能传递到工具钻头4.当滑动杆9位于最高位置并且旋转杆8的倒角52处于不能传递锤击的最后位置时 到工具位4但旋转可以 传递到工具位4,直线部分54跨过窄间隙与倒角52相对,使得旋转杆8不能旋转到旋转禁止位置。
    • 5. 发明授权
    • Disc grinders
    • 圆盘磨床
    • US09102032B2
    • 2015-08-11
    • US13285463
    • 2011-10-31
    • Shin NakamuraKenji Mukoyama
    • Shin NakamuraKenji Mukoyama
    • B24B55/05B24B23/02
    • B24B23/028B24B55/05
    • A disc grinder includes a grinding wheel cover rotatably mounted to a gear housing about an axis of a spindle. A stopper device can restrict a position adjustable range of the grinding wheel cover of the spindle and includes a first stopper on the side of the grinding wheel cover and a second stopper on the side of the gear housing. The first stopper and the second stopper have stopper surfaces for contacting with each other. An impact absorbing device can absorb an impact produced when the stopper surfaces contact with each other.
    • 盘式研磨机包括可围绕主轴的轴线可旋转地安装到齿轮壳体的砂轮盖。 止动装置可以限制主轴的砂轮盖的位置可调整范围,并且包括在砂轮盖侧面的第一止动件和在齿轮壳体一侧的第二止动件。 第一止动件和第二止动件具有用于彼此接触的止动表面。 冲击吸收装置可以吸收当止动器表面彼此接触时产生的冲击。
    • 10. 发明申请
    • Optical System
    • 光学系统
    • US20100238568A1
    • 2010-09-23
    • US12308489
    • 2007-05-15
    • Takayoshi ToginoShin Nakamura
    • Takayoshi ToginoShin Nakamura
    • G02B17/08
    • G03B37/00G02B13/06G02B17/0804G03B15/00
    • The invention relates to an optical system which is adapted to form an image having a full 360° (panoramic)-direction angle of view on an image plane or project an image located on an image plane in a full 360° (panoramic)-direction angle of view, and which is of small-format size and has reduced light flare and high resolving power. The optical system comprises a front unit (10) having at least two reflecting surfaces (11, 12), each rotationally symmetric about a center axis (1), and a rear unit (20) that is rotationally symmetric about the center axis and has positive power. The first reflecting surface (11) is located opposite to an entrance pupil (6Y), and the second reflecting surface (12) is located on the same side as the first reflecting surface (11). The entrance pupil (6Y) in a section including the center axis is located between the outer periphery of the first reflecting surface (11) and the outer periphery of the second reflecting surface (12). A light beam coming from afar passes through the front unit (10) and the rear unit (20) in order, forming an image at a position of an image plane (30) off the center axis. The entrance pupil (6Y) is positioned off the center axis in the section including the center axis, and an entrance pupil (6X) is positioned on the center axis in a section that is orthogonal to the section including the center axis. The rear unit (20) is constructed of at least two groups.
    • 本发明涉及一种光学系统,其适于在图像平面上形成具有全360度(全景)方向视角的图像,或者以完全360°(全景)方向投影位于图像平面上的图像 视角,并且是小格式尺寸,并且减少了光耀斑和高分辨能力。 光学系统包括具有至少两个反射表面(11,12)的前部单元(10),每个反射表面围绕中心轴线(1)旋转对称,并且后部单元(20)围绕中心轴线旋转对称并具有 积极的力量 第一反射面(11)与入射光瞳(6Y)相对配置,第二反射面(12)与第一反射面(11)位于同一侧。 包括中心轴的部分中的入射光瞳位于第一反射面(11)的外周和第二反射面(12)的外周之间。 来自远方的光束依次穿过前单元(10)和后单元(20),在图像平面(30)离中心轴的位置形成图像。 入射光瞳(6Y)位于包括中心轴线的部分中的中心轴线上,并且入射光瞳(6X)位于与包括中心轴线的部分正交的部分中的中心轴上。 后部单元(20)由至少两组构成。