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    • 12. 发明授权
    • Pneumatic static guide for a tape
    • 气动静音导轨
    • US5570831A
    • 1996-11-05
    • US167069
    • 1993-12-16
    • Hidekazu TakedaKenmei MasudaNobuyuki KakuTomoki ShojiToshihiro KoyamaKazuo SakaiFumio Takeda
    • Hidekazu TakedaKenmei MasudaNobuyuki KakuTomoki ShojiToshihiro KoyamaKazuo SakaiFumio Takeda
    • G11B15/60B65H23/24G11B15/61G11B15/665
    • B65H23/24B65H2406/111
    • A tape guide device having apertures formed in two tape-winding surfaces of non-rotatable curvature portions. A tape restriction is provided at a connecting portion of the tape guide device interconnecting the curvature portions. A flange is provided on one of the curvature portions for movement along an axis thereof to adjust the height thereof. The flange has an outer diameter greater than that of the one curvature portion. The curvature portions are integrated with each other. According this, an air film is generated between the tape and the tape-winding surfaces by discharging air from the apertures, thereby reducing the friction coefficient between the tape and the tape-winding surfaces to suppress the increase of tape tension. The tape is restricted to fluctuate in the direction of width. Further, the attitude and relative positioning between the curvature portions can be secured with high precision. As a result, the tape load during the tape running is reduced, thereby stabilizing the tape running and prolonging the lifetime of the tape.
    • 一种带导向装置,其具有形成在不可旋转曲率部分的两个带卷绕表面中的孔。 在连接弯曲部分的带导向装置的连接部分处设置带限制。 一个弯曲部分上设有凸缘,用于沿其轴线移动以调节其高度。 凸缘的外径大于一个曲率部分的外径。 曲率部分彼此一体化。 据此,通过从孔排出空气,在带和带卷绕表面之间产生空气膜,从而降低带和带缠绕表面之间的摩擦系数,以抑制带张力的增加。 磁带被限制在宽度方向上波动。 此外,可以高精度地确保曲率部分之间的姿态和相对定位。 结果,带运行期间的带载减少,从而稳定带的运行并延长带的使用寿命。
    • 14. 发明授权
    • Tape guide structure of rotary head drum in recording/reproduction
apparatus and method of machining the same
    • 记录/再现装置中旋转磁头鼓的磁带引导结构及其加工方法
    • US5734537A
    • 1998-03-31
    • US652271
    • 1996-05-23
    • Seiji OnoKenmei MasudaHidekazu TakedaAtsushi InoueNobuo MasuokaNoboru KatohnoMakoto IbeKuniaki HirayamaKiyokazu Watanabe
    • Seiji OnoKenmei MasudaHidekazu TakedaAtsushi InoueNobuo MasuokaNoboru KatohnoMakoto IbeKuniaki HirayamaKiyokazu Watanabe
    • G11B15/61
    • G11B15/61
    • In a rotary head drum of a recording/reproduction apparatus, for smoothly holding a magnetic tape over a guide step provided on a lower drum to guide the magnetic tape, part of a chamfer formed in the guide step is formed as a large chamfer in which a chamfered amount is larger than that of the remaining part of the chamfer. With the provision of the large chamfer, even if the lower edge of the magnetic tape deviates from the guide step when the tape is wound over or unwound from the drum, damages of the magnetic tape can be prevented. Therefore, the position and attitude control of tape withdrawing members can be greatly simplified and the magnetic tape can always run stably while being restricted in its position by the guide step. In the process of machining a tape running surface on the drum, by increasing the feed distance of a blade in the part of the chamfer where the large chamfer is to be formed by chamfering the guide step with a large chamfered amount, in comparison with the feed distance set in the remaining part of the chamfer, the large chamfer and the small chamfer can be both machined at the same time, resulting in simplified machining steps.
    • 在记录/再现装置的旋转磁头鼓中,为了平滑地将磁带保持在设置在下磁鼓上的引导台上以引导磁带,形成在引导步骤中的倒角的一部分形成为大倒角,其中 倒角量大于倒角剩余部分的倒角量。 通过设置大倒角,即使当磁带从磁鼓卷绕或退绕时磁带的下边缘偏离引导步骤,也可以防止磁带的损坏。 因此,能够极大地简化卷取装置的位置和姿势控制,并且通过引导步骤限制在其位置,磁带总是可以稳定地运行。 在加工滚筒上的带子运行表面的过程中,通过在倒角部分中增加叶片的进给距离,通过以较大的倒角量倒角引导台阶,形成大倒角的部分,与 在倒角的剩余部分设置的进给距离,大倒角和小倒角可以同时加工,从而简化了加工步骤。