CN1131510C - 磁带录像机用磁头鼓组件 - Google Patents

磁带录像机用磁头鼓组件 Download PDF

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Publication number
CN1131510C
CN1131510C CN98106054A CN98106054A CN1131510C CN 1131510 C CN1131510 C CN 1131510C CN 98106054 A CN98106054 A CN 98106054A CN 98106054 A CN98106054 A CN 98106054A CN 1131510 C CN1131510 C CN 1131510C
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China
Prior art keywords
tape
drum
absorbing element
head assembly
advancing
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Expired - Fee Related
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CN98106054A
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CN1195841A (zh
Inventor
洪显寿
李承雨
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/43—Control or regulation of mechanical tension of record carrier, e.g. tape tension
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/60—Guiding record carrier
    • G11B15/61—Guiding record carrier on drum, e.g. drum containing rotating heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
    • G11B33/08—Insulation or absorption of undesired vibrations or sounds
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers

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  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

提供一种磁带录像机用磁头鼓组件。该磁头鼓组件利用吸振元件可吸收振动，该吸振元件被弹簧弹性偏压，朝着定鼓的外圆周表面凸出，该弹簧安装在定鼓与磁带相接触部位的开口内。该吸振元件与行进中磁带相接触，根据磁带的行进状况对其产生适当的张力。

Description

磁带录像机用磁头鼓组件
本发明涉及磁带录像机用磁头鼓组件，更具体地说，涉及一种以高速旋转的磁头鼓组件，用于通过磁带录像机如盒式磁带录像机(VCR)中的磁头，向磁带记录信息和从磁带重放信息。
参照图1和2，传统的磁头鼓组件包括：转鼓120，由转轴110旋转支承；定鼓130，安装在转鼓120下部固定在底板(未示出)上；定子铁心140，安装在定鼓130下部且其上绕有线圈141；以及转子150，其内圆周表面装有面对定子铁心140的磁铁151。
磁头121安装在转鼓120中。并且，转轴110由轴承111旋转支承在定鼓130上。
借助一对导杆底座11将磁带10从带盒(未示出)中拉出，且以使磁带10与磁头鼓接触的方式走带。磁带10在行进时其底端受阶跃式导槽131引导，该导槽成形于定鼓130的外圆周表面。
并且当转鼓120以高速旋转时，将信息记录到行进的磁带10上和从其上重放出来。
当磁带录像机工作时会产生振动，这是由转鼓120的高速旋转和磁带10与磁头121的接触所造成的。这种振动会在磁带录像机中导致诸如屏幕闪烁、噪声、磁头磨损等等问题。
为解决上述问题，本发明的一个目的是提供一种旋转磁头鼓组件，该组件具有用于在扫描磁带过程中吸收磁带振动的装置。
为实现本发明的上述目的，现提供一种磁带录像机用磁头鼓组件，其包含：定鼓，固定在底板上；转鼓，与转轴合在一起旋转支承在定鼓上；磁头，安装在转鼓中，用于扫描行进中的磁带，其特征在于：该磁头鼓组件含有安装在定鼓中的吸振单元，用于通过与行进的磁带保持接触来吸振；在此，吸振单元包含有：弹性体，安装在成形于定鼓中的开口内；吸振元件，沿定鼓径向向外方向受到弹性体的弹性偏压，且与行进的磁带保持接触。
优选地，吸振元件与磁带的接触表面为弯圆的。
并且，吸振元件为橡胶或合成树脂。
通过对优选实施例的详细说明并参照附图，将使本发明的上述目的和优点变得更加清楚，附图中：
图1为传统磁带录像机用磁头鼓组件的透视简图；
图2为图1所示磁头鼓组件的横断面简图；
图3为根据本发明的磁带录像机用磁头鼓组件的透视简图；
图4为图3所示磁头鼓组件的横断面简图；
图5为沿图4中V-V线的局部剖视图。
下面将参照图3至5对本发明的优选实施例进行详细说明。在所有图中，相同的附图标记代表相同元件。磁头121安装在由转轴110旋转支承的转鼓120中。定鼓130被安装成在转鼓120的下部固定在底板(未示出)上。
根据本发明，定鼓130中安装有与磁带10保持接触的吸振单元200，用于吸收磁带的振动。
吸振单元200包括：弹性体，例如螺旋弹簧210，安装在成形于定鼓130中的开口132内；以及吸振元件220，沿定鼓130径向向外方向受到螺旋弹簧210的弹性偏压，与行进的磁带10保持接触。
优选地，吸振元件220由橡胶或合成树脂制成。并且，吸振元件220与磁带10的接触表面为弯圆的，以具有预定的曲率。该曲率可根据吸振元件220的特性而有所不同。
螺旋弹簧210的弹力小于磁带10的张力。于是，当磁带10与吸振元件220接触时，优选的是：吸振元件220从其初始位置被磁带10的张力轻微向内推压。
在根据本发明的具有上述构造的磁头鼓组件工作过程中，磁带10借助一对导杆底座11从带盒(未示出)中拉出，并以使磁带与转鼓120和定鼓130相接触的方式走带。磁带10的行进受到阶跃式导槽131的引导，该导槽成形于定鼓130的外圆周表面。
由于吸振元件220沿定鼓130径向向外方向受到螺旋弹簧210的弹性偏压，它对行进中的磁带10通过相互接触而产生适当的张力，从而吸收由于转鼓120高速旋转和磁带10与磁头121相接触所产生的振动。
因此提高了磁头的信号拾取精度，使得屏幕闪烁与噪声受到抑制，从而提高了磁带录像机的工作特性。

Claims (5)

1.一种磁带录像机用磁头鼓组件，其包含：定鼓，固定在底板上；转鼓，与转轴合在一起旋转支承在定鼓上；以及磁头，安装在转鼓中，用于扫描行进中的磁带，其特征在于：
该磁头鼓组件具有安装在定鼓中的吸振单元，用于通过与行进中的磁带保持接触来吸振；
上述吸振单元包含有：
弹性体，安装在成形于定鼓中的开口内；以及
吸振元件，沿定鼓径向向外方向受到弹性体的弹性偏压，且与行进中的磁带保持接触。
2.如权利要求1所述的磁头鼓组件，其特征在于：吸振元件与磁带的接触表面为弯圆的。
3.如权利要求1所述的磁头鼓组件，其特征在于：吸振元件为橡胶或合成树脂。
4.如权利要求1所述的磁头鼓组件，其特征在于：弹性体为螺旋弹簧。
5.如权利要求4所述的磁头鼓组件，其特征在于：螺旋弹簧的弹力小于磁带的张力。
CN98106054A 1997-03-08 1998-03-06 磁带录像机用磁头鼓组件 Expired - Fee Related CN1131510C (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR7827/97 1997-03-08
KR7827/1997 1997-03-08
KR1019970007827A KR19980072856A (ko) 1997-03-08 1997-03-08 테이프 레코더의 회전 헤드드럼 조립체

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CN1195841A CN1195841A (zh) 1998-10-14
CN1131510C true CN1131510C (zh) 2003-12-17

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JP (1) JP2930571B2 (zh)
KR (1) KR19980072856A (zh)
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2336935B (en) * 1998-04-30 2002-03-27 Daewoo Electronics Co Ltd Connecting device for use in a head drum assembly
KR100737798B1 (ko) * 2001-07-13 2007-07-10 주식회사 포스코 서지호퍼의 괴광 제거장치
US8089726B2 (en) * 2008-03-25 2012-01-03 Oracle America, Inc. Method for counteracting longitudinal oscillations of magnetic tape in a tape drive system
WO2022104517A1 (zh) * 2020-11-17 2022-05-27 杭州育锦科技有限公司 一种减速防止振动摩擦损坏节能环保的硬盘加固装置

Citations (1)

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Publication number Priority date Publication date Assignee Title
JPH0765333A (ja) * 1993-08-24 1995-03-10 Canon Inc 記録再生装置のドラム装置

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FR2281607A1 (fr) * 1974-08-05 1976-03-05 Staar Sa Dispositif de positionnement d'une bande magnetique dans un appareil d'enregistrement et/ou de reproduction a tete rotative
JPS586547A (ja) * 1981-07-03 1983-01-14 Sony Corp 回転磁気ヘツドドラム
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JP2930571B2 (ja) 1999-08-03
KR19980072856A (ko) 1998-11-05
JPH10320730A (ja) 1998-12-04
CN1195841A (zh) 1998-10-14
US5999381A (en) 1999-12-07

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