JPH01181137U

JPH01181137U -

Info

Publication number: JPH01181137U
Application number: JP7750888U
Authority: JP
Priority date: 1988-06-10
Filing date: 1988-06-10
Publication date: 1989-12-27

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による磁気記録再
生装置を示す展開斜視図、第２図はこの考案のシ
ヤツターが開いているところを示す正面図、第３
図はシヤツターが閉じた状態を示す正面図、第４
図はこの考案の他の実施例のシヤツター部が開い
ているところを示す平面図、第５図はシヤツター
が閉じた状態を示す平面図、第６図は従来の磁気
記録再生装置を示す展開斜視図、第７図は従来の
シリンダユニツトを示す斜視図、第８図は記録再
生時のシリンダユニツトとテープとの接触状態を
示す側断面図である。図において、１はシリンダ
ユニツト、２はテープ、８は放熱孔、２１は回転
シリンダ近傍の空気温度を検出する温度検出部、
２２は装置の外気温を検出する温度検出部、２３
はスライド式のシヤツター、２４はシヤツター駆
動源であるプランジヤ、２５は連結棒、２６はば
ね、２７は回動式のシヤツター、２８はシヤツタ
ー駆動源であるモータ、２９はラツクを示す。な
お、図中、同一符号は同一、又は相当部分を示す
。 FIG. 1 is an exploded perspective view showing a magnetic recording/reproducing device according to an embodiment of this invention, FIG. 2 is a front view showing the shutter of this invention being opened, and FIG.
The figure is a front view showing the shutter in the closed state.
The figure is a plan view showing the shutter section of another embodiment of this invention in an open state, FIG. 5 is a plan view showing the shutter in a closed state, and FIG. 6 is an exploded perspective view showing a conventional magnetic recording/reproducing device. 7 is a perspective view showing a conventional cylinder unit, and FIG. 8 is a side sectional view showing the state of contact between the cylinder unit and the tape during recording and reproduction. In the figure, 1 is a cylinder unit, 2 is a tape, 8 is a heat radiation hole, 21 is a temperature detection unit that detects the air temperature near the rotating cylinder,
22 is a temperature detection unit that detects the outside temperature of the device; 23
24 is a sliding shutter, 24 is a plunger which is a shutter driving source, 25 is a connecting rod, 26 is a spring, 27 is a rotating shutter, 28 is a motor which is a shutter driving source, and 29 is a rack. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

It has a detection means for detecting the outside temperature of a rotating head type magnetic recording and reproducing apparatus using a tape-shaped recording medium and a detecting means for detecting the air temperature in the vicinity of the rotating cylinder, and is openable and closable to the heat radiation hole of the magnetic recording and reproducing apparatus. 1. A heat radiation hole opening/closing device characterized by comprising a member and a drive section for driving the member.