JPS63205838A - Detector for erroneous erasing prevention - Google Patents
Detector for erroneous erasing preventionInfo
- Publication number
- JPS63205838A JPS63205838A JP62038429A JP3842987A JPS63205838A JP S63205838 A JPS63205838 A JP S63205838A JP 62038429 A JP62038429 A JP 62038429A JP 3842987 A JP3842987 A JP 3842987A JP S63205838 A JPS63205838 A JP S63205838A
- Authority
- JP
- Japan
- Prior art keywords
- detection
- piece
- cassette tape
- detection piece
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002265 prevention Effects 0.000 title claims abstract description 38
- 238000001514 detection method Methods 0.000 claims abstract description 83
- 230000007246 mechanism Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はカセットテープレコーダの誤消去防止検出装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an accidental erasure prevention detection device for a cassette tape recorder.
従来の技術 近年のカセットテープレコーダを第2図に示す。Conventional technology A recent cassette tape recorder is shown in FIG.
第2図に示すようにセットサイズを決定するものは、厚
みTについてはカセットテープ1とモーター7とで決定
され、高さHについてはカセットテープ1の巾で決定さ
れ、巾りについてはカセットテープ1と磁気ヘッド8と
で決定されていた。特に一般的な録音機能を有するカセ
ットテープレコーダについては第3図のように誤消去防
止検出片3が構成されており、巾りはカセットテープ1
と磁気ヘッド8と誤消去検出片3とで決定されていた。As shown in Fig. 2, the set size is determined by the thickness T by the cassette tape 1 and the motor 7, the height H by the width of the cassette tape 1, and the width by the cassette tape 1. 1 and the magnetic head 8. In particular, for cassette tape recorders with a general recording function, an accidental erasure prevention detection piece 3 is constructed as shown in Figure 3, and the width is the same as that of a cassette tape.
was determined by the magnetic head 8 and the erroneous erasure detection piece 3.
第3図において、検出片3はメカニズム基板2に設けた
回動支点3Cを中心に回動可能であり、その一端部に設
けた孔検出部3aがカセソトテープ装着部に装填されだ
カセットテープ1の後端の誤消去防止検出孔1aに対向
し、他端に設けた係止部3bが録音レバー4に対向する
ようにばね9によって回動附勢されている。In FIG. 3, the detection piece 3 is rotatable around a rotation fulcrum 3C provided on the mechanism board 2, and a hole detection part 3a provided at one end of the detection piece 3 is inserted into the cassette tape mounting part. A locking portion 3b provided at the other end, facing the erroneous erasure prevention detection hole 1a at the rear end, is biased by a spring 9 to rotate so as to face the recording lever 4.
このような構成の誤消去防止検出装置では、カセットテ
ープ1の後端に設けた誤消去防止検出孔1aに防止片1
bがある場合、検出片3の一端の検出部3aが防止片1
bに当接して他端の係止部3bが録音レバー4の移動軌
跡内に位置することはなく、録音機能を発揮する。一方
、検出孔1aに防止片1bがない場合には検出片3の一
端の検出部3aが検出孔1a内に入り込んで他端の係止
部3bが録音レバー4の移動軌跡に位置し、録音レバー
4の押し込みを禁止して録音機能を阻止する。In the accidental erasure prevention detection device having such a configuration, a prevention piece 1 is inserted into the accidental erasure prevention detection hole 1a provided at the rear end of the cassette tape 1.
b, the detection part 3a at one end of the detection piece 3 is connected to the prevention piece 1.
b, the locking portion 3b at the other end is not located within the movement locus of the recording lever 4, and performs the recording function. On the other hand, when the detection hole 1a does not have the prevention piece 1b, the detection part 3a at one end of the detection piece 3 enters into the detection hole 1a, and the locking part 3b at the other end is located in the movement locus of the recording lever 4, and the recording lever 4 is moved. The recording function is blocked by prohibiting the lever 4 from being pressed.
発明が解決しようとする問題点
しかしながら、以上のように録音機能付セットを小型化
するのに誤消去防止検出機構が構成していた寸法Xがネ
ックとなり、コンパクト化がむずかしいという欠点を有
していた。すなわち、従来装置では、検出片3はカセッ
トテープ1の後方にあってセットの厚み方向の回動支点
3Cを中心にして回動するため、検出片3の一端の検出
部3aは折曲して構成する必要があシ、カセットテープ
1の後方寸法が大きくなる欠点を有していた。Problems to be Solved by the Invention However, as described above, the size X of the accidental erasure prevention detection mechanism becomes a bottleneck in downsizing a set with a recording function, making it difficult to downsize. Ta. That is, in the conventional device, the detection piece 3 is located at the rear of the cassette tape 1 and rotates around the rotation fulcrum 3C in the thickness direction of the set, so the detection part 3a at one end of the detection piece 3 is bent. However, the rear dimension of the cassette tape 1 becomes large.
問題点を解決するための手段
本発明の誤消去防止検出装置は、カセットテープ装着部
に装填されるカセットテープの後方でその厚み内に高さ
方向に回動中心を有し、一端はカセットテープの誤消去
防止検出孔に出し入れ可能に構成された検出片と、この
検出片の他端に対向するように配置され、この検出片の
他端と係合し常に前記検出片の一端が誤消去防止検出孔
に入るように附勢する録音の可否を決定するリーフスイ
ッチと、上記カセットテープを磁気ヘッド側に押えるば
ねとを備え、上記カセットテープの非装填時に前記検出
片の一端は誤消去防止検出孔より出る方向に附勢され、
カセットテープの装填時は前記バネによる附勢が解除さ
れ前記リーフスイッチの附勢により上記検出片の一端が
誤消去防止検出孔に入る方向に附勢されるように上記リ
ーフスイッチの附勢力は前記バネの附勢力よりも゛小さ
く設定されていることを特徴とするものである。Means for Solving the Problems The accidental erasure prevention detection device of the present invention has a rotation center in the height direction within the thickness of the cassette tape at the rear of the cassette tape loaded in the cassette tape loading section, and one end is connected to the cassette tape. A detection piece configured to be able to be put in and taken out of the detection hole for preventing accidental erasure, and a detection piece arranged to face the other end of the detection piece, and engaged with the other end of the detection piece to prevent one end of the detection piece from being erased accidentally. It is equipped with a leaf switch that is energized to enter the prevention detection hole to determine whether or not recording is possible, and a spring that presses the cassette tape toward the magnetic head, and one end of the detection piece prevents accidental erasure when the cassette tape is not loaded. It is energized in the direction coming out from the detection hole,
When loading a cassette tape, the biasing force of the leaf switch is changed so that the biasing force of the spring is released and the biasing force of the leaf switch biases one end of the detection piece in the direction of entering the erroneous erasure prevention detection hole. It is characterized by being set smaller than the applied force of the spring.
作 用
本発明は、上記した構成によりカセットテープの後方部
に設けられる誤消去防止検出機構の配置スペースを最小
限にすることが出来る。もって、検出孔内の防止片の有
無により誤消去防止検出片が回動し、無の場合は、テー
プ押えばねの附勢力が解除され、リークスイッチをON
にし録音可能状態となり、有の場合はリーフスイッチの
附勢力で検出片が回動しリーフスイッチがOFF とな
り録音不可能状態となる。Function: With the above-described configuration, the present invention can minimize the space required for erroneous erasure prevention detection mechanism provided at the rear of the cassette tape. Accordingly, the accidental erasure prevention detection piece rotates depending on the presence or absence of the prevention piece in the detection hole, and if there is no prevention piece, the biasing force of the tape pressing spring is released and the leak switch is turned on.
If it is present, the detection piece rotates due to the force of the leaf switch and the leaf switch is turned OFF, making it impossible to record.
実施例
本発明の実施例を第1図により説明する。第1図は本発
明の一実施例の誤消去防止検出装置の斜視図であり、1
aはカセットテープ1の誤消去防止検出孔であり、1b
はその孔内の防止片である。EXAMPLE An example of the present invention will be explained with reference to FIG. FIG. 1 is a perspective view of an accidental erasure prevention detection device according to an embodiment of the present invention.
a is the detection hole for preventing accidental erasure of the cassette tape 1, and 1b
is the prevention piece inside the hole.
2は駆動用メカニズムの基板で、2aの支点受部におい
て誤消去防止検出片3の回動支点部3Cを回動自在に保
持している。3aは誤消去防止検出片3の孔検出部であ
り、カセットテープ1の誤消去防止孔片1aの有無によ
り回動し、3bはその回動に対しリーフスイッチ5の可
動片5aと係合しリーフスイッチ5を0N10FFする
保合部である。4はカセットテープ1をカセットテープ
当て部4aにより磁気ヘッド側に押えるテープ押えばね
であシ、カセットテープ非装着時は図の2点鎖線のよう
に保合部4bにより検出片3の係合部3dを検出片3が
矢印方向とは逆に附勢し、カセットテープ装着時は実線
位置になり検出片3に対する附勢力は解除される。また
リーフスイッチ6の検出片3に対する附勢力はテープ押
えばね4の検出片3に対する附勢力よりも小さく設定さ
れている。Reference numeral 2 denotes a driving mechanism substrate, which rotatably holds the rotational fulcrum portion 3C of the erroneous erasure prevention detection piece 3 at the fulcrum receiving portion of 2a. Reference numeral 3a designates a hole detecting portion of the detection piece 3 for preventing accidental erasure, which rotates depending on the presence or absence of the hole piece 1a for preventing accidental erasure on the cassette tape 1, and 3b engages with the movable piece 5a of the leaf switch 5 in response to the rotation. This is a retaining part that keeps the leaf switch 5 0N10FF. 4 is a tape pressing spring that presses the cassette tape 1 toward the magnetic head side by means of a cassette tape holding part 4a, and when the cassette tape is not installed, an engaging part of the detection piece 3 is held by a retaining part 4b as shown by the two-dot chain line in the figure. The detection piece 3 urges the detection piece 3d in the opposite direction to the direction of the arrow, and when the cassette tape is loaded, the detection piece 3 reaches the solid line position and the urging force on the detection piece 3 is released. Further, the biasing force of the leaf switch 6 against the detection piece 3 is set smaller than the biasing force of the tape pressing spring 4 against the detection piece 3.
6はプリント配線基板でありこの上にリーフスイッチ5
.電気部品7等が実装されている。6 is a printed wiring board, and a leaf switch 5 is mounted on this board.
.. Electrical components 7 and the like are mounted.
次に動作を説明する。力走ットテーブ非装着の場合、テ
ープ押えはね4(2点鎖線)の附勢力により検出片3は
実線位置となり、リーフスイッチ5はONとなり録音可
状態となる。Next, the operation will be explained. When the power running tape is not attached, the detection piece 3 is moved to the solid line position by the force of the tape presser spring 4 (double-dashed line), and the leaf switch 5 is turned on, making it possible to record.
カセットテープ装着するとテープ押えばね4は実線位置
となり検出片3に対する附勢力が解除される。そこでカ
セットテープ1の誤消去防止片1bがおられていなけれ
ば誤消去防止孔検出部3aが誤消去防止片1bに当り実
線位置となりリーフスイッチ5をONとし録音可能状態
となり、また一方誤消去防止片1bがおられている場合
は誤消去防止検出片3がリーフスイッチ5により矢印方
向に回動し、図の2点鎖線の位置となり、リーフスイッ
チ5がOFF になり録音不可能状態となる。When the cassette tape is loaded, the tape pressing spring 4 moves to the solid line position and the biasing force against the detection piece 3 is released. If the cassette tape 1 does not have the erasure prevention piece 1b, the accidental erasure prevention hole detection part 3a will hit the accidental erasure prevention piece 1b and will be at the solid line position, turning on the leaf switch 5 and becoming ready for recording. When the piece 1b is down, the accidental erasure prevention detection piece 3 is rotated in the direction of the arrow by the leaf switch 5 to the position indicated by the two-dot chain line in the figure, and the leaf switch 5 is turned OFF, making recording impossible.
このように誤消去防止検出片3の回動支点部3Cのスペ
ース分I寸法だけで誤消去防止検出機構の構成をとるこ
とができる。In this way, the erroneous erasure prevention detection mechanism can be configured only by the space I dimension of the rotation fulcrum portion 3C of the erroneous erasure prevention detection piece 3.
発明の効果
以上のように本発明は、カセットテープの後方に、厚み
内で高さ方向に回動中心を有し、一端をカセットテープ
の誤消去防止検出孔に出し入れ可能にした検出片を有し
、この検出片の他端を録音の可否を行なうリーフスイッ
チを係合させ常に前記検出片の一端が誤消去防止孔に入
るように附勢し、またカセットテープを磁気ヘッド側に
押えるばねによりカセットテープ非装着時に前記検出片
の一端は誤消去防止検出孔よシ出る方向に附勢し、カセ
ットテープ装着時は前記バネによる附勢は解除されるも
前記リーフスイッチの附勢力は前記バネの附勢力よりも
小さく設定したので、検出片の回動支点部のスペースX
寸法だけで誤消去防止検出機構を構成することができ、
カセットの小型。Effects of the Invention As described above, the present invention has a detection piece located at the rear of the cassette tape, which has a center of rotation in the height direction within the thickness, and whose one end can be inserted into and taken out from the detection hole for preventing accidental erasure of the cassette tape. The other end of this detection piece is engaged with a leaf switch that enables or disables recording, and is energized so that one end of the detection piece always enters the accidental erasure prevention hole, and a spring that presses the cassette tape toward the magnetic head side. When the cassette tape is not installed, one end of the detection piece is biased in the direction of coming out of the accidental erasure prevention detection hole, and when the cassette tape is loaded, the biasing force by the spring is released, but the biasing force of the leaf switch is the same as that of the spring. Since it is set smaller than the auxiliary force, the space X of the rotation fulcrum of the detection piece
A detection mechanism for preventing accidental erasure can be constructed using only the dimensions.
Small cassette.
薄型化における効果は大きい。The effect on thinning is significant.
第1図は本発明の誤消去防止検出装置の一実施例を示す
斜視図、第2図は従来のカセットテープレコーダを示し
た斜視図、第3図a、bは従来の誤消去防止検出機構を
示しだ正面図及びその断面図である。
1b・・・・・・誤消去防止片、3・・・・・・誤消去
防止検出片、3a・・・・・・孔検出部、3b・・・・
・・係止部、3d・・・・・・係合部、4・・・・・・
テープ押えばね、4b・・・・・・係合部、5・・・・
・・リーフスイッチ。
代理人の氏名 弁理士 中 尾 敏 男 ほか1名1−
刀でフトテーブ 3J−係合部
Iら一訣涌):F7止カ 4−テープ押入ばね?−
メiニズム基板 #−F1!ットテーブ当て部?。−
文邊、受脅 4−係合部
2III−“保持郊 5−リーフスイッチ3
−−誤ンt5五メ2「止&;トシ)7 5α−iヲ゛
動 ンう「3α−−L 撞 」う )ぴ
5ム−[定 7γ3ム一係主部 6−ブソ
ント基植3C−回動夫力、荀 7・−・電気部品第1
図
第2図FIG. 1 is a perspective view showing an embodiment of the accidental erasure prevention detection device of the present invention, FIG. 2 is a perspective view of a conventional cassette tape recorder, and FIGS. 3a and 3b are conventional accidental erasure prevention detection mechanisms. FIG. 2 is a front view and a sectional view thereof. 1b... Erroneous erasure prevention piece, 3... Erroneous erasure prevention detection piece, 3a... Hole detection section, 3b...
...Locking part, 3d...Engagement part, 4...
Tape presser, 4b... Engagement part, 5...
...Leaf switch. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
3J-Engagement part I and others):F7 stopper 4-Tape push-in spring? −
Mainism board #-F1! Cuttable part? . −
Bunbe, receiving threat 4-Engagement part 2III-“holding part 5-leaf switch 3
--Error
5 Mu - [Constant 7γ3 Mu 1 main part 6 - Busonto base 3C - Rotating force, Xun 7... Electrical parts 1st
Figure 2
Claims (1)
方でその厚み内でかつ高さ方向に回動中心を有し、一端
はカセットテープの誤消去防止検出孔に出し入れ可能に
構成された検出片と、この検出片の他端に対向するよう
に配置され、上記検出片の他端と係合し常に前記検出片
の一端が誤消去防止検出孔に入るように附勢するための
録音の可否を決定するリーフスイッチと、上記カセット
テープを磁気ヘッド側に押えるバネとを備え、カセット
テープの非装填時に前記検出片の一端は誤消去防止検出
孔より出る方向に附勢され、カセットテープの装填時は
前記バネによる附勢が解除され、前記リーフスイッチの
附勢力により上記検出片の一端が誤消去防止検出孔に入
る方向に附勢されるよう、上記リーフスイッチの附勢力
は前記バネの附勢力よりも小さく設定されていることを
特徴とする誤消去防止検出装置。a detection piece having a rotation center within the thickness and in the height direction behind the cassette tape loaded in the cassette tape loading section, and having one end configured to be inserted into and taken out from an accidental erasure prevention detection hole of the cassette tape; It is arranged to face the other end of the detection piece, and determines whether or not recording is possible by engaging the other end of the detection piece and always energizing one end of the detection piece to enter the detection hole to prevent accidental erasure. and a spring that presses the cassette tape toward the magnetic head. When the cassette tape is not loaded, one end of the detection piece is energized in the direction of exiting from the accidental erasure prevention detection hole, and when the cassette tape is loaded. The biasing force of the leaf switch is greater than the biasing force of the spring so that the biasing force of the leaf switch is released and the biasing force of the leaf switch biases one end of the detection piece in the direction of entering the mistaken erasure prevention detection hole. A detection device for preventing accidental erasure, characterized in that the detection device is also set small.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62038429A JPH0814901B2 (en) | 1987-02-20 | 1987-02-20 | Accidental erasure prevention detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62038429A JPH0814901B2 (en) | 1987-02-20 | 1987-02-20 | Accidental erasure prevention detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63205838A true JPS63205838A (en) | 1988-08-25 |
JPH0814901B2 JPH0814901B2 (en) | 1996-02-14 |
Family
ID=12525065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62038429A Expired - Fee Related JPH0814901B2 (en) | 1987-02-20 | 1987-02-20 | Accidental erasure prevention detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0814901B2 (en) |
-
1987
- 1987-02-20 JP JP62038429A patent/JPH0814901B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0814901B2 (en) | 1996-02-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |