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CN1140873A - Head drum for use in video cassette recorder - Google Patents

Head drum for use in video cassette recorder Download PDF

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Publication number
CN1140873A
CN1140873A CN 96102582 CN96102582A CN1140873A CN 1140873 A CN1140873 A CN 1140873A CN 96102582 CN96102582 CN 96102582 CN 96102582 A CN96102582 A CN 96102582A CN 1140873 A CN1140873 A CN 1140873A
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CN
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Prior art keywords
head
drum
use
video
cassette
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Application number
CN 96102582
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Chinese (zh)
Inventor
李昶昊
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大宇电子株式会社
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Abstract

一种包含有一个磁鼓组件的盒式录象机。 Comprising a drum assembly of a video cassette recorder. 磁鼓组件的功能之一是引导磁带沿其运行路径,其中,该磁鼓组件包括一个在其底部表面具有一个或多个磁头的旋转磁鼓,和一个在其周边表面设置有导轨的静止磁鼓。 One function of the guide tape head drum assembly is in its running path, wherein the drum assembly includes a rotary drum having a plurality of magnetic head or a bottom surface thereof, and a rail provided with a stationary magnet at its peripheral surface drum. 该导轨在磁头运行方向距磁带和磁鼓间第一个接触点在13至17度弧度范围的点处开始引导磁带。 The guide rails from a first point of contact between the head drum and the tape running direction at a point within the arc of 13 to 17 degrees start the tape guide.

Description

盒式录象机用磁鼓 Video cassette recorder with a drum

本发明涉及盒式录象机(“VCR”),特别涉及在其重查模式期间能防止磁带偏离磁鼓导轨的磁鼓。 The present invention relates to a video cassette recorder ( "VCR"), particularly to the retry mode during which the magnetic tape can be prevented from departing from the drum drum rail.

众所周知,盒式录象机一般包含有一个柱板组件,它可运动地安装在台板上用于将磁带由磁带盒中引出,并使其与盒式录象机的磁鼓相接触。 Is well known, typically comprises a video cassette recorder pillar panel assembly, which is movably mounted on a platen by a lead tape for a tape cassette, and brought into contact with the drum of the video cassette recorder. 该柱板组件包括一个导向滚轴用于引导磁带通过磁带路径运行,和一个倾斜柱用于帮助磁带维持一相对磁鼓的适当垂直位置。 The column assembly includes a roller plate for guiding the tape through a tape running path, and a suitable vertical position of a column inclined relative to a drum to help maintain the tape guide.

图1表示了现有技术的柱板组件,此时,已从磁带盒(未表示)中抽出的磁带T已被加载在磁鼓组件10上。 FIG 1 shows a prior art plate assembly of the column, this time, from the cassette (not shown) in the withdrawn magnetic tape T has been loaded on the head drum assembly 10. 柱板组件设置有一柱板1,一导向滚轴2和一倾斜柱3,其中导向滚轴2还进一步包括一轴盖2a,一垫片2b和一可转动滚轴2c。 Column plate assembly 1 is provided with a plate column, a guide roller 2 and an inclined post 3, wherein the guide rollers 2 further comprising a shaft cover 2a, 2b and a spacer a rotatable roller 2c. 导向滚轴2与倾斜柱3一起在磁带运行期间引导磁带T沿磁带路径运行,并帮助磁带T维持一相对磁鼓组件10的适当和垂直位置。 Guide rollers 2 and 3 with the inclined guide posts during tape transport the magnetic tape T running along the tape path, the tape T and help to maintain a proper and vertical position relative to the drum assembly 10.

请参看图2,这里表示了图1中磁鼓组件10的横截面,它包括一根旋转轴11,一个划分成两部分的即旋转磁鼓13和静止磁鼓12,一个法兰15,一个上滚珠轴承16和一个下滚珠轴承16′,一个转子变压器17,一个定子变压器18和一对磁头19。 Referring to Figure 2, there is shown a cross-section of the drum assembly 1 of FIG. 10, which comprises a rotary shaft 11, i.e. a rotary drum is divided into two parts 13 and the stationary drum 12, a flange 15, a the ball bearing 16 and a lower ball bearing 16 ', a rotor transformer 17, a stator transformer 18 and a pair of heads 19.

此外,该静止磁鼓14在其周边表面设置有导轨14a用于引导磁带T。 In addition, the stationary drum 14 is provided on its peripheral surface with a guide rail 14a for guiding the tape T. 该导轨14a设计成在点“L”(见图9)开始引导磁带,该点位于磁头运行方向距磁带首次与磁鼓12相接触点约10度孤度处。 The guide rails 14a designed to point "L" (see FIG. 9) starts guiding the tape, the head running direction of the point is first isolated from the magnetic tape with the drum 12 degrees to about 10 degrees relative to the contact point.

当信息记录/复制在/取出自磁带T时,磁带T在图3所示的箭头A方向运行,沿着导轨14a运动,并和导向滚轴2的盖2a进行接触。 When information recording / reproducing, the magnetic tape T running in the direction of an arrow A shown in FIG. 3 at / from the magnetic tape T is withdrawn, moving along the guide rail 14a, and the guide rollers 2 and 2a of the lid contact. 这时,磁头19在图3箭头“B”所示的方向扫描磁带T。 At this time, the magnetic head scanning the magnetic tape 19 in the direction indicated by arrow in FIG. 3 "B" T.

另一方面,当磁带T在相反方向运动,即如当盒式录象机处于重查模式情况,磁带在图4箭头“C”所示方向运动时,它趋于向下运动(见图5),从而与导向滚轴2的垫片2b相接触。 On the other hand, when the magnetic tape T in the opposite direction, i.e., such as when the retry mode is a video cassette recorder, the tape moves in the direction shown in "C" arrow in FIG. 4, it tends to downward movement (see Fig. 5 ), whereby the guide rollers in contact with the pad 2b 2. 在这种情况,磁头19的相应磁迹由图4箭头“D”表示。 In this case, the magnetic head 19 corresponding track is represented by an arrow in FIG. 4 "D".

但是,当磁带T与垫片2b相接触时,磁带T可能变得不正,如图6A所示的那样偏离导轨14a,或如图6B所示的那样,其底边变得皱折,从而阻止记录在磁带上的信息不能全部被磁头19读出,而这就进而引起如图7所示的在电视监视器上出现一个空白的无图象部分“E”。 However, when the magnetic tape T in contact with the spacer 2B, the magnetic tape T may become incorrect, as shown in FIG. 6A as departing rails 14a, or 6B, the bottom side thereof becomes wrinkled, thereby preventing information is recorded on the magnetic tape the magnetic head 19 can not all be read out, and this in turn causes a blank of FIG non-image portion "E" in FIG. 7 on the television monitor.

因此,本发明的主要目的是提出一种盒式录象机用磁鼓,它在盒式录象机重审模式期间能防止磁带偏离其导轨。 Therefore, a primary object of the present invention is to provide a drum with a video cassette recorder, a video cassette recorder that during the review mode can be prevented from departing from the tape guide.

因此,本发明的一个方面提出一种盒式录象机,它在其中包含一个用于引导磁带沿其运动路径的磁鼓组件,该磁鼓组件包括一个在其底部表面具有一个或多个磁头的旋转磁鼓,和一个在其周边表面设置有导轨的静止磁鼓,其中该导轨在磁头运行方向距磁带首次与磁鼓相接触点在13至17度孤度范围的点处开始引导磁带。 Accordingly, one aspect of the present invention proposes a video cassette recorder, in which it comprises one or more magnetic heads for guiding a magnetic tape along its path of movement of the head drum assembly, the drum assembly comprises a surface having at its bottom a rotary drum, and a guide rail provided with a stationary drum on its peripheral surface, wherein the tape guide from the first point of contact with the drum at a solitary point range of 13 to 17 degrees in the head begins to guide the tape running direction.

本发明上述及其它目的和特性将结合附图,由下述最佳实施例的说明中变得更为清晰,其中:图1是柱板组件和通常的磁鼓组件;图2是图1通常磁鼓组件的横截面图;图3为放象模式时磁带上的磁迹; The above and other objects and features of the present invention in conjunction with the accompanying drawings, become apparent from the following description of preferred embodiments, in which: FIG 1 is a conventional pillar panel assembly and the head drum assembly; FIG. 2 is a view typically 1 cross-sectional view of the drum assembly; FIG. 3 is a track on the magnetic tape during the playback mode;

图4为重查模式时磁带上的磁迹;图5描述了重查模式期间磁带在导向滚轴上的运行;图6A和6B相应地显示重查模式期间磁带偏离导轨及其底边变得皱折的情况;图7提供了当磁带偏离导轨时,监视器上放象的情况;图8为柱板组件和在其中包含所发明导轨的磁鼓组件;图9显示了现有导轨和所发明导轨叠加在一起时的比较情况;而图10说明重查模式期间磁带在所发明导轨的情况。 4 is the retry mode when the tracks on the magnetic tape; tape during running on the guide rollers 5 depicts the retry mode; FIGS. 6A and 6B respectively show the tape during the retry mode departing from its bottom side rails becomes where wrinkles; 7 provides a guide when the tape is deviated from the case of the playback on the monitor; FIG. 8 is a column in which the plate assembly and the inventive head drum assembly comprising the guide rail; Figure 9 shows the existing rail and comparing the case where the invention is superimposed rails together; and FIG. 10 illustrates a case where the tape during re-search mode of the invention, the guide rail.

请参考图8,这里表示了一个柱板组件和将磁带从磁带盒(未表示)拉出加载后的磁鼓100。 Referring to FIG. 8, there is shown a post and plate assembly from the tape cassette (not shown) after the loading of the drum 100 is pulled out.

如图所示,该柱板组件设置有一柱板51,一导向滚轴52和一倾斜柱53。 As shown, the column plate assembly 51 is provided with a plate column, a guide roller 52 and an inclined post 53. 该导向滚轴52与该倾斜柱53一起引导磁带T,并帮助磁带T维持一相对磁鼓组件100的适当的垂直位置。 The guide rollers 52 guide the magnetic tape T together with the inclined post 53, the tape T and help to maintain a proper vertical position relative to the drum assembly 100. 该磁鼓100分成旋转磁鼓101和静止磁鼓102。 The drum 100 into rotary drum 101 and the stationary drum 102. 在该旋转磁鼓101的底部表面安装有一个或多个磁头(未表示);在静止磁鼓102的周边表面设置有一个所发明的导轨103。 At the bottom surface of the rotary drum 101 is mounted or a plurality of heads (not shown); the invention is provided with a guide rail 103 on the outside surface of the stationary drum 102.

该所发明的导轨103和现有导轨14a的不同在于,如图9所示,所发明导轨在点“M”开始引导磁带,而现有导轨14a在点“L”开始引导。 The guide 103 is different from the prior invention in that the guide rail 14a, as shown in FIG. 9, the inventive guide rail at a point "M" start guiding the tape, and the existing rail 14a at point "L" starts to boot. 点“M”位于磁头运行方向距磁带首次在磁鼓100左侧与磁鼓相接触点的13至17度孤度处。 Point "M" is located in the running direction of the magnetic head from the magnetic tape 100 on the left side in the first contact with the drum drum radians at point 13 to 17 degrees. 点“M”最好位于磁头运行方向距上述第一个接触点的15度处。 Point "M" is preferably located at the head running direction 15 degrees away from said first contact point.

通过将导轨开始引导磁带的点“M”放置于磁头运行方向距磁带和磁鼓间,第一个接触点的13至17度弧度处,就可能如图10所示的,在重查模式期间消除磁带偏离其导轨或其底边被皱折的可能。 The start point by the guide rails tape "M" is placed in the running direction of the tape between the head and from the drum, 13 to 17-degree arc at a first contact point, it is possible as shown in FIG. 10, during the retry mode elimination of the tape which may deviate from the guide rail or bottom crease.

虽然本发明相对最佳实施例来进行表示和说明,但该技术的行家们对此应理解为,只要不离开下述权利要求所确定的本发明的范围,各种变化和修正都是可以的。 While the preferred embodiment of the present invention relative to shown and described, but this technology is to be understood as connoisseurs of this, the scope without departing from the present invention as defined by the following claims, that various changes and modifications are possible .

Claims (2)

1.一种盒式录象机,它包含有一个用于引导磁带沿其运行路径的磁鼓组件,其中磁鼓组件包括:一个在其底部表面具有一个或多个磁头的旋转磁鼓;和一个在其周边表面设置有一导轨的静止磁鼓,其中,该导轨在磁头运行方向距磁带首次与磁鼓相接触点在13至17度弧度范围的点处开始引导磁带。 A video cassette recorder, comprising a drum assembly for guiding a magnetic tape along its travel path, wherein the drum assembly includes: a rotary drum having a plurality of heads or in a bottom surface thereof; and a peripheral surface thereof is provided with a stationary drum guide rail, wherein the rail head in the tape running direction away from the first point of contact with the drum at a point within the arc of 13 to 17 degrees start the tape guide.
2.权利要求1所述的盒式录象机,其中,导轨在磁头运行方向距磁带和磁鼓间第一个接触点约15弧度的点处开始引导磁带。 2. The video cassette recorder according to claim 1, wherein the rail head running direction from a first point of contact between the tape and the drum at the start point of about 15 radian tape guide.
CN 96102582 1995-05-30 1996-02-28 Head drum for use in video cassette recorder CN1140873A (en)

Priority Applications (1)

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KR19950013830A KR0153986B1 (en) 1995-05-30 1995-05-30 Head drum of a tape recorder

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CN1140873A true true CN1140873A (en) 1997-01-22

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CN 96102582 CN1140873A (en) 1995-05-30 1996-02-28 Head drum for use in video cassette recorder

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JP (1) JPH08329571A (en)
KR (1) KR0153986B1 (en)
CN (1) CN1140873A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102667929A (en) * 2009-12-21 2012-09-12 国际商业机器公司 Method and apparatus for operating a storage device
CN104321816A (en) * 2012-07-10 2015-01-28 国际商业机器公司 Determining a skew error signal (SES) offset used to determine an SES to adjust heads in a drive unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102667929A (en) * 2009-12-21 2012-09-12 国际商业机器公司 Method and apparatus for operating a storage device
CN102667929B (en) * 2009-12-21 2015-06-17 国际商业机器公司 Method and apparatus for operating a storage device
CN104321816A (en) * 2012-07-10 2015-01-28 国际商业机器公司 Determining a skew error signal (SES) offset used to determine an SES to adjust heads in a drive unit
CN104321816B (en) * 2012-07-10 2016-08-17 国际商业机器公司 Method and system for controlling the drive head can access the data recording medium

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KR0153986B1 (en) 1998-12-15 grant
JPH08329571A (en) 1996-12-13 application

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