JPH0430669Y2 - - Google Patents
Info
- Publication number
- JPH0430669Y2 JPH0430669Y2 JP1909285U JP1909285U JPH0430669Y2 JP H0430669 Y2 JPH0430669 Y2 JP H0430669Y2 JP 1909285 U JP1909285 U JP 1909285U JP 1909285 U JP1909285 U JP 1909285U JP H0430669 Y2 JPH0430669 Y2 JP H0430669Y2
- Authority
- JP
- Japan
- Prior art keywords
- erasure prevention
- recording
- accidental erasure
- detection
- head switching
- 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.)
- Expired
Links
- 230000002265 prevention Effects 0.000 claims description 50
- 210000000078 claw Anatomy 0.000 claims description 42
- 238000001514 detection method Methods 0.000 claims description 28
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、リバース式回転磁気ヘツドを切り換
えるリバース式テープレコーダの誤消去防止爪機
構に関する。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an accidental erasure prevention pawl mechanism for a reverse type tape recorder that switches a reverse type rotating magnetic head.
本考案はテープカセツトのA面とB面の誤消去
防止片の有無を検出する誤消去防止爪の働きを回
転磁気ヘツドを反転するヘツド切換板の反転揺動
に関連させて自動的に切換え検出するようにした
リバース式テープレコーダの誤消去防止爪機構を
提案することである。
The present invention automatically switches and detects the function of the erase prevention claw, which detects the presence or absence of the erase prevention pieces on sides A and B of a tape cassette, in conjunction with the reversal swing of the head switching plate that reverses the rotating magnetic head. An object of the present invention is to propose a claw mechanism for preventing accidental erasure for a reverse type tape recorder.
本考案は、回転式磁気ヘツドをヘツド切換板2
で反転するレバース式テープレコーダにおいて、
A面とB面の誤消去防止爪3,4と、ヘツド切換
板2の揺動に連動して摺動し一側端に一方の誤消
去防止爪3の突部3bと当接して誤消去防止爪3
を逃がす逃がし部1cと録音レバー7の検知部7
a,7bと当接可能に臨み誤消去防止爪4の動き
に連動して上下動する第1当接部1dとを有する
連結杆1と、前記検知部7bに臨む前記一方の誤
消去防止爪3に設けられた第2当接部3cとを備
え、前記ヘツド切換板2の揺動で前記連結杆1を
摺動して前記第1当接部1dを前記検知部7a,
7bのスライド域に挿入離脱すると共に前記逃が
し部1cと誤消去防止爪3の突部3bとを当接さ
せて他方の誤消去防止爪4が作用するとき一方の
誤消去防止爪3を不作用状態とするよう構成した
ことにある。
The present invention connects the rotary magnetic head to the head switching plate 2.
In a lever type tape recorder that reverses at
The accidental erasure prevention claws 3 and 4 on sides A and B slide in conjunction with the swinging of the head switching plate 2, and contact the protrusion 3b of one of the accidental erasure prevention claws 3 at one end to prevent accidental erasure. Prevention claw 3
The relief part 1c that releases the sound and the detection part 7 of the recording lever 7
a, 7b, and a first contact portion 1d that moves up and down in conjunction with the movement of the accidental erasure prevention claw 4; and one of the accidental erasure prevention claws that faces the detection portion 7b. 3, and by the swinging of the head switching plate 2, the connecting rod 1 is slid and the first abutting portion 1d is connected to the detecting portion 7a,
7b is inserted into and removed from the sliding area, and when the relief portion 1c and the protrusion 3b of the accidental erasure prevention claw 3 are brought into contact with each other, and the other accidental erasure prevention claw 4 is activated, one of the accidental erasure prevention claws 3 is inactivated. The problem lies in the fact that it is configured to be a state.
以下、図示の一実施例で本考案を説明する。リ
バース式テープレコーダの誤消去防止爪機構は第
1図、第2図でシヤーシ10,11が支柱12で
間隔を置いて並行に保持されると共にシヤーシ1
1の下側に他のシヤーシ13が間隔を置いて並行
に保持されている。シヤーシ10の前方の縁には
2組のU字状軸部と鈎部を有するU字状軸部1
4,14が設けられて連結杆1の両側が前後方向
に回動自在にかつ左右に摺動自在に嵌められ、中
間に横向きの長い凹部1aが形成されて第10図
に示した如くヘツド切換板2の突出部2aが挿入
されている。
Hereinafter, the present invention will be explained with reference to an illustrated embodiment. The accidental erasure prevention claw mechanism of the reverse type tape recorder is shown in FIGS.
Another chassis 13 is held below the chassis 1 in parallel at intervals. The front edge of the chassis 10 has a U-shaped shaft portion 1 having two sets of U-shaped shaft portions and a hook portion.
4 and 14 are provided, and both sides of the connecting rod 1 are fitted so as to be rotatable in the front-rear direction and slidable in the left-right direction, and a long horizontal recess 1a is formed in the middle for head switching as shown in FIG. The protrusion 2a of the plate 2 is inserted.
連結杆1の一側端には小さな凹部1bとA面用
の一方の誤消去防止爪3を後方に回動する凸状逃
がし部1cと第1当接部1dが形成されている。
連結杆1の他側端には逆向きコ字部1eが形成さ
れてB面用の他方の誤消去防止爪4が嵌め込まれ
ている。 A small concave portion 1b, a convex release portion 1c for rotating one of the accidental erasure prevention claws 3 for the A side rearward, and a first contact portion 1d are formed at one end of the connecting rod 1.
An inverted U-shaped portion 1e is formed at the other end of the connecting rod 1, into which the other erroneous erasure prevention claw 4 for side B is fitted.
誤消去防止爪3,4はL字状に形成されて上側
の辺に爪3a,3aが形成され、一方の誤消去防
止爪3には連結杆1の小さな凹部1bと逃がし部
1cと選択係合される突部3bと第2当接部3c
が形成されている。 The accidental erasure prevention claws 3 and 4 are formed in an L-shape, with claws 3a and 3a formed on the upper side, and one of the accidental erasure prevention claws 3 has a small recess 1b of the connecting rod 1, a relief part 1c, and a selection engagement. The protruding portion 3b and the second contact portion 3c are mated together.
is formed.
シヤーシ10,11の前側には第2図の左右に
摺動自在に係止板15が設けられてバネ16で右
側方向に付勢されている。係止板15の内側には
シヤーシの面に対し垂直方向に上下動自在に録音
操作レバー5と停止操作レバー6が設けられてい
る。各操作レバーには係止板15の複数の折曲部
15aと係合する傾斜面5a,6aと抜け止め腕
部5b,6bが形成され、録音操作レバー5には
前記折曲部15aが係合される段部5cが形成さ
れている。シヤーシ11と係止板15の間には図
示しないメインスイツチを開閉するスライド板1
7がシヤーシ11に摺動自在に設けられて再生・
録音及び巻戻し・早送りの各操作レバーで摺動さ
れ、各操作レバーしバネ板18で上方に押し上げ
付勢されている。 A locking plate 15 is provided on the front side of the chassis 10, 11 so as to be slidable to the left and right in FIG. 2, and is urged rightward by a spring 16. A recording operation lever 5 and a stop operation lever 6 are provided inside the locking plate 15 so as to be movable up and down in a direction perpendicular to the surface of the chassis. Each operating lever is formed with inclined surfaces 5a, 6a that engage with the plurality of bent portions 15a of the locking plate 15, and retaining arms 5b, 6b. A step portion 5c to be fitted is formed. A slide plate 1 for opening and closing a main switch (not shown) is located between the chassis 11 and the locking plate 15.
7 is slidably provided on the chassis 11 for playback and
Each operating lever for recording, rewinding, and fast forwarding is slid, and each operating lever is pushed upward by a spring plate 18.
第1図でシヤーシ10の上面には録音レバー7
と録音スイツチレバー8が前後に摺動自在に設け
られ、録音レバー7はバネ19で、録音スイツチ
レバー8はバネ20で夫々手前側に付勢され、録
音スイツチレバー8の前端には図示しない録音ス
イツチが臨まされている。録音操作レバー5の突
部5dには録音レバー7の手前側の一端が押圧自
在に臨まされ、録音レバー7の前端は二叉に別れ
て検知部7a,7bが形成されて検知部7aは前
記第1当接部1dに、検知部7bは第2当接部3
cに臨まされている。録音レバー7の手前側の下
向き折曲部7cで図示しないアシストカム機構を
作動するアシストトリガーに臨まされている。録
音スイツチレバーの手前側には第1図,第4図の
録音スイツチ爪21が回動自在に支承されてバネ
22で時計方向に付勢され、録音レバー7に設け
られた突起7dが録音スイツチ爪21の折曲部2
1aを押し上げて回動するように臨まされてい
る。録音スイツチレバー8の前方には逆向きL字
形の腕部8aが延ばされ、腕部先端には逆向きコ
字形の凹部8bが形成されている。 In Figure 1, there is a recording lever 7 on the top of the chassis 10.
and a recording switch lever 8 are provided so as to be slidable back and forth, the recording lever 7 is biased toward the front by a spring 19, and the recording switch lever 8 is biased toward the near side by a spring 20, respectively. A switch is coming. One end of the recording lever 7 on the near side faces the projection 5d of the recording operation lever 5 so as to be freely pressed, and the front end of the recording lever 7 is divided into two parts to form detection parts 7a and 7b. The detection section 7b is connected to the first contact section 1d and the second contact section 3
c. A downwardly bent portion 7c on the front side of the recording lever 7 faces an assist trigger that operates an assist cam mechanism (not shown). On the front side of the recording switch lever, a recording switch pawl 21 shown in FIGS. 1 and 4 is rotatably supported and biased clockwise by a spring 22, and a protrusion 7d provided on the recording lever 7 is used to operate the recording switch. Bent part 2 of claw 21
1a is pushed up and rotated. An inverted L-shaped arm 8a extends in front of the recording switch lever 8, and an inverted U-shaped recess 8b is formed at the tip of the arm.
腕部8aの位置のシヤーシ10には軸23で録
音検知板9が回動自在に支承されて軸23の外周
に巻回された検知バネ24の一端がバネ掛け部9
aに掛けられ、検知バネ24の他端は他のバネ掛
け部9bに掛けられると共に前記録音スイツチレ
バー8の凹部8bに挿入されている。録音検知板
9には更に前記第1当接部1dに臨む検知部9c
と脚部9dが設けられている。脚部9dは切換ス
ライド板25のピン26に臨まされ、切換スライ
ド板25はシヤーシ10上に横向きに摺動自在に
設けられ、切換スライド板25の他端はヘツド切
換板2の逆L字形折曲部2bに挟み込まれると共
に長孔が穿設されて長孔にヘツド切換板2のピン
2cが挿入されている。シヤーシ10の裏側に突
出された前記ピン26には図示しない解除機構の
動作条件を選択する機構が取り付けられている。 A recording detection plate 9 is rotatably supported by a shaft 23 on the chassis 10 at the position of the arm 8a, and one end of a detection spring 24 wound around the outer periphery of the shaft 23 is connected to the spring hook 9.
The other end of the detection spring 24 is hung on another spring hook 9b and inserted into the recess 8b of the recording switch lever 8. The recording detection plate 9 further includes a detection portion 9c facing the first contact portion 1d.
and leg portions 9d are provided. The leg portion 9d faces the pin 26 of the switching slide plate 25, and the switching slide plate 25 is provided to be able to slide horizontally on the chassis 10, and the other end of the switching slide plate 25 faces the inverted L-shaped fold of the head switching plate 2. It is sandwiched between the curved portions 2b and has a long hole drilled therein, into which the pin 2c of the head switching plate 2 is inserted. A mechanism (not shown) for selecting operating conditions of a release mechanism is attached to the pin 26 protruding from the back side of the chassis 10.
即ち、第7図に示した状態でA面とB面の切換
機構に連動して揺動するヘツド切換板2のピン2
cで第8図に示したように切換スライド板25が
右側に移動されるとオートストツプの解除機構へ
連動する。 That is, in the state shown in FIG. 7, the pin 2 of the head switching plate 2 swings in conjunction with the A-side and B-side switching mechanism.
At c, when the switching slide plate 25 is moved to the right as shown in FIG. 8, it is linked to the auto-stop release mechanism.
シヤーシ13の下側には第2図のようにモータ
ー27が固定されてモーター27の回転はシヤー
シ10と13で軸承された第1図の2本のキヤプ
スタン軸28,29のフライホイール30,31
にベルト32を介して伝達される。キヤプスタン
軸28,29の前側にはシヤーシ11に固定され
た軸33,34に夫々供給リール台35と巻取リ
ール台36が嵌合配置されている。シヤーシ10
の上面には前記ヘツド切換板2とヘツド基板37
が設けられ、ヘツド切換板2はシヤーシ10に植
設された軸部38に揺動自在に嵌合され、ヘツド
切換カムギヤ39の長い第1ピン40が長孔2d
に挿入されて反転揺動され、ヘツド基板37は複
数の長孔と軸部38とシヤーシに植設された複数
の支持部で前後に摺動自在に保持されて軸部38
に螺合されたビス41とバネ板で抜き止めされて
いる。 A motor 27 is fixed to the lower side of the chassis 13 as shown in FIG.
is transmitted via the belt 32. On the front side of the capstan shafts 28 and 29, a supply reel stand 35 and a take-up reel stand 36 are fitted to shafts 33 and 34 fixed to the chassis 11, respectively. Chassis 10
The head switching plate 2 and the head board 37 are provided on the upper surface of the
The head switching plate 2 is swingably fitted to a shaft portion 38 implanted in the chassis 10, and the long first pin 40 of the head switching cam gear 39 is inserted into the elongated hole 2d.
The head board 37 is held slidably back and forth by a plurality of elongated holes, a shaft portion 38, and a plurality of support portions implanted in the chassis.
It is prevented from coming off by a screw 41 screwed into the and a spring plate.
前記誤消去防止爪機構の連結杆1と誤消去防止
爪3,4の動作を説明すると、第1図、第7図及
び第8図でヘツド基板37に反転自在に取り付け
られたリバース式回転磁気ヘツド42はヘツド切
換板2が第1図で実線位置の時(第8図の状態
で)図示しないテープカセツトのB面に対応し、
第1図で2点鎖線の時(第7図の状態で)A面に
対応するようになつている。 To explain the operation of the connecting rod 1 and the accidental erasure prevention claws 3 and 4 of the accidental erasure prevention claw mechanism, as shown in FIGS. The head 42 corresponds to the B side of a tape cassette (not shown) when the head switching plate 2 is in the solid line position in FIG. 1 (in the state shown in FIG. 8).
In FIG. 1, the two-dot chain line corresponds to surface A (in the state shown in FIG. 7).
次にヘツド切換板2が第1図の実線及び第8図
の如くB面側にある時連結杆1は右側に移動され
ており、逃がし部1cが左側のA面用誤消去防止
爪3の突部3bに当たつて誤消去防止爪3は後方
に回動されて第9図に示したように不作用状態と
なり、第1当接部1dは検知部7aに対応する位
置に移動されている。又ヘツド切換板2が第1図
の2点鎖線及び第7図の如くA面側に反転されて
いる時は逃がし部1cの右隣の小さな凹部1bと
A面用誤消去防止爪3の突部3bが当接されてテ
ープカセツトのA面の誤消去防止片の有無が検知
される作用状態となつており、かつ第1当接部1
dは検知部7a,7bの中間に位置されている。 Next, when the head switching plate 2 is on the B side as shown by the solid line in FIG. 1 and as shown in FIG. Upon contact with the protrusion 3b, the accidental erasure prevention claw 3 is rotated backward and becomes inactive as shown in FIG. 9, and the first contact portion 1d is moved to a position corresponding to the detection portion 7a. There is. Also, when the head switching plate 2 is turned over to side A as shown by the two-dot chain line in FIG. 1 and as shown in FIG. The first abutting portion 1 is in an operating state in which the presence or absence of the erroneous erasure prevention piece on side A of the tape cassette is detected when the first abutting portion 3b is brought into contact with the tape cassette.
d is located between the detection parts 7a and 7b.
また、誤消去防止爪4と連結杆1との関係は、
第1図、第7図及び第8図から解るように連結杆
1の右端の逆向きコ字部1eに誤消去防止爪4の
左端部が挿入連結されているので、B面側のカセ
ツトの誤消去防止片がある場合、第6図に示した
如く誤消去防止爪4の爪4aが押されて後方に回
動されると、連結している連結杆1も後方に回動
され第1当接部1dが上昇されて録音レバー7が
押し込み可能となる。 Furthermore, the relationship between the accidental erasure prevention claw 4 and the connecting rod 1 is as follows.
As can be seen from FIGS. 1, 7, and 8, the left end of the accidental erasure prevention claw 4 is inserted and connected to the inverted U-shaped portion 1e at the right end of the connecting rod 1, so that the cassette on side B side is When there is an accidental erasure prevention piece, when the claw 4a of the accidental erasure prevention claw 4 is pushed and rotated backwards as shown in FIG. 6, the connected connecting rod 1 is also rotated backwards and the first The contact portion 1d is raised and the recording lever 7 can be pushed in.
以下、1〜4で各誤消去防止爪の動作状態につ
いて説明をする。 Below, the operating states of each of the accidental erasure prevention claws will be explained in 1 to 4.
1 第6図に示した如く、テープカセツトのA
面、B面共に誤消去防止片がある時はカセツト
の装填で誤消去防止爪3,4は共に後方に回動
される。1 As shown in Figure 6, A of the tape cassette
When there is an erroneous erasure prevention piece on both the side and the B side, both the erroneous erasure prevention claws 3 and 4 are rotated rearward when the cassette is loaded.
この回動状態で録音操作レバー5が押し下げ
られると録音レバー7の検知部7a,7bのス
ライド域に第1当接部1dと第2当接部3cが
ないので録音レバー7は前進され、スライド板
17の移動でメインスイツチが閉成されてモー
ター27が回転され、図示しないアシストカム
機構でヘツド基板37が前進され、録音スイツ
チ爪21の脚部21bが図示しないアシストカ
ム機構のチエンジアームの突起43で押し上げ
られ、録音スイツチレバー8が前進されてテー
プのA面に録音される。この時録音スイツチレ
バー8の前進で録音検知板9は検知バネ24で
反時計方向に回動されようとするが第1当接部
1dが上昇されているので反時計方向に回動さ
れない。 When the recording operation lever 5 is pushed down in this rotating state, the recording lever 7 is moved forward and slid because the first contact portion 1d and the second contact portion 3c are not in the sliding area of the detection portions 7a and 7b of the recording lever 7. The main switch is closed by the movement of the plate 17, the motor 27 is rotated, the head board 37 is advanced by the assist cam mechanism (not shown), and the leg 21b of the recording switch pawl 21 is connected to the protrusion of the change arm of the assist cam mechanism (not shown). 43, the recording switch lever 8 is moved forward and recording is performed on side A of the tape. At this time, as the recording switch lever 8 moves forward, the recording detection plate 9 attempts to be rotated counterclockwise by the detection spring 24, but since the first contact portion 1d is raised, the recording detection plate 9 is not rotated counterclockwise.
A面のテープ終端では図示しないテープ終端
検知機構とヘツド切換カムギヤ39のヘツド切
換機構と解除機構の動作条件を選択する機構と
解除機構で停止又はヘツド切換板2が反転揺動
されて連結杆1が右側に摺動され、B面に磁気
ヘツド42が対応される。連結杆1が摺動され
ると第1当接部1dは先端が上昇されたまま検
知部7aの上に移動される。この時録音検知板
9の動作で図示しない解除機構は作動されずに
図示しないヘツド切換カムギヤ39の切換機構
でヘツド切換板2はB面に反転揺動される。B
面のテープ終端では図示しないテープ終端検知
機構と解除機構で動作が停止される。 At the end of the tape on side A, a tape end detection mechanism (not shown) and a mechanism for selecting the operating conditions of the head switching mechanism and release mechanism of the head switching cam gear 39 and a release mechanism stop or reversely swing the head switching plate 2 and connect the connecting rod 1. is slid to the right, and the magnetic head 42 corresponds to the B side. When the connecting rod 1 is slid, the first contact portion 1d is moved above the detection portion 7a with its tip raised. At this time, the release mechanism (not shown) is not activated by the operation of the recording detection plate 9, and the head switching plate 2 is reversely swung to the B side by the switching mechanism of the head switching cam gear 39 (not shown). B
At the end of the tape on the surface, the operation is stopped by a tape end detection mechanism and a release mechanism (not shown).
2 次に第5図に示した如く、テープカセツトの
誤消去防止片がA面、B面共にない時は、A面
への録音操作で録音操作レバー5は押し下げら
れない。即ち、検知部7bのスライド域に第2
当接部3cがあつて録音レバー7が前進出来
ず、録音状態にすることが出来ない。又図示し
ないヘツド切換カムギヤ39の切換機構でヘツ
ド切換板2を反転揺動してもB面への録音操作
も検知部7aのスライド域に第1当接部1dが
あつて録音状態にすることが出来ない。2. Next, as shown in FIG. 5, when the tape cassette has no accidental erasure prevention piece on both side A and B, the recording operation lever 5 cannot be pressed down when recording on side A. That is, the second
The recording lever 7 cannot move forward due to the abutting portion 3c, and the recording state cannot be set. Furthermore, even if the head switching plate 2 is reversely swung by the switching mechanism of the head switching cam gear 39 (not shown), the first contact portion 1d will be in the recording state in the sliding area of the detection portion 7a even if the recording operation to the B side is performed. I can't.
3 テープカセツトの誤消去防止片がA面にあ
り、B面にない時は、A面用誤消去防止爪3は
後方に回動されるのでA面への録音操作で録音
操作レバー5が押し下げられると前記1の前者
の場合と同様に検知部7bのスライド域に第2
当接部3cがないので録音状態にすることが出
来る。しかしB面には誤消去防止片がないので
B面用の誤消去防止爪4は後方に回動されず、
従つて第1当接部1d先端が上昇されないので
前記録音スイツチレバー8の前進で録音検知板
9が反時計方向に回動され、この状態でA面の
テープ終端になると録音検知板9と切換スライ
ド板25と図示しない解除機構の作動条件設定
機構でテープ終端検知機構と解除機構で停止さ
れてA面で解除してしまい、B面の録音状態に
はならない。3 When the tape cassette's accidental erasure prevention piece is on side A and not on side B, the accidental erasure prevention claw 3 for side A is rotated backwards, so recording operation lever 5 is pushed down when recording on side A. When the slide area of the detection part 7b is
Since there is no abutting part 3c, it is possible to put it into a recording state. However, since there is no erroneous erasure prevention piece on the B side, the erroneous erasure prevention claw 4 for the B side is not rotated backwards.
Therefore, since the tip of the first contact portion 1d is not raised, the recording detection plate 9 is rotated counterclockwise as the recording switch lever 8 moves forward, and in this state, when the end of the tape on side A is reached, the recording detection plate 9 is switched. The operation condition setting mechanism of the slide plate 25 and the release mechanism (not shown), the tape end detection mechanism, and the release mechanism stop the tape and release the tape on the A side, so that the B side is not recorded.
4 誤消去防止片がA面になく、B面にある時
は、A面への録音状態では録音操作レバー5が
押し下げられないので、ヘツド切換カムギヤ3
9の図示しないヘツド切換機構でヘツド切換板
2を反転揺動してB面への録音状態とするか、
テープカセツトを裏返して前記3の状態にして
もB面に録音がなされる。4 When the accidental erasure prevention piece is not on side A but on side B, the recording operation lever 5 cannot be pressed down when recording on side A, so the head switching cam gear 3
Either the head switching plate 2 is reversely swung using the head switching mechanism (not shown) at 9 to record on the B side, or
Even if the tape cassette is turned over and placed in state 3 above, recording will still be made on the B side.
前記説明では録音操作レバー5,録音レバー
7、録音スイツチレバー8及び連結杆1の小さ
な凹部1b、逃がし部1c、第1当接部1d等
を左側に設けたが、右側に設けてもよい。 In the above description, the recording operation lever 5, the recording lever 7, the recording switch lever 8, the small recess 1b of the connecting rod 1, the relief part 1c, the first contact part 1d, etc. are provided on the left side, but they may be provided on the right side.
本考案は前述のように構成されたから、簡単な
構成でヘツド切換板を反転揺動する動作に連動し
て誤消去防止爪機構がA面とB面に自動的に切換
え作動してテープカセツトの誤消去防止片の有無
を確実に検知し、その状況に対応してテープレコ
ーダが作動される実用上優れた効果を奏するリバ
ース式テープレコーダの誤消去防止爪機構を提供
することが出来る。
Since the present invention is constructed as described above, it has a simple construction, and the accidental erasure prevention claw mechanism automatically switches between the A side and the B side in conjunction with the operation of reversing and rocking the head switching plate, and the tape cassette is It is possible to provide an erroneous erasure prevention pawl mechanism for a reverse type tape recorder which has excellent practical effects in which the presence or absence of an erroneous erasure prevention piece is reliably detected and the tape recorder is operated in response to the situation.
図面は本考案の一実施例が示され、第1図はテ
ープレコーダの平面図、第2図は正面図、第3図
は第1図の−線断面正面図、第4図は録音ス
イツチ爪の平面図、第5図はカセツトの誤消去防
止片がない場合の誤消去防止爪状態説明図、第6
図はカセツトの誤消去防止片がある場合の誤消去
防止爪状態説明図、第7図はカセツトA面側動作
状態要部説明図、第8図はカセツトB面側動作状
態要部説明図、第9図は第8図の−線断面説
明図、第10図は第8図の−線断面説明図で
ある。
1……連結杆、1c……逃がし部、1d……第
1当接部、2……ヘツド切換板、3,4……誤消
去防止爪、3b……突部、3c……第2当接部、
7……録音レバー、7a,7b……検知部、42
……回転磁気ヘツド。
The drawings show an embodiment of the present invention, in which Fig. 1 is a plan view of a tape recorder, Fig. 2 is a front view, Fig. 3 is a front view taken along the line - - of Fig. 1, and Fig. 4 is a recording switch claw. Fig. 5 is an explanatory diagram of the state of the accidental erasure prevention claw when there is no accidental erasure prevention piece on the cassette;
The figure is an explanatory diagram of the state of the accidental erasure prevention claw when the cassette has an accidental erasure prevention piece, FIG. 7 is an explanatory diagram of the main part of the operating state on side A of the cassette, and FIG. 8 is an illustration of the main part of the operating state of the side B of the cassette. 9 is an explanatory cross-sectional view taken along the line -- in FIG. 8, and FIG. 10 is an explanatory cross-sectional view taken along the line -- in FIG. 1... Connecting rod, 1c... Relief part, 1d... First contact part, 2... Head switching plate, 3, 4... Erroneous erasure prevention claw, 3b... Projection, 3c... Second contact contact part,
7... Recording lever, 7a, 7b... Detection section, 42
...Rotating magnetic head.
Claims (1)
リバース式テープレコーダにおいて、A面とB面
の誤消去防止爪3,4と、ヘツド切換板2の揺動
に連動して摺動し一側端に一方の誤消去防止爪3
の突部3bと当接して誤消去防止爪3を逃がす逃
がし部1cと録音レバー7の検知部7a,7bと
当接可能に臨み誤消去防止爪4の動きに連動して
上下動する第1当接部1dとを有する連結杆1
と、前記検知部7bに臨む前記一方の誤消去防止
爪3に設けられた第2当接部3cとを備え、前記
ヘツド切換板2の揺動で前記連結杆1を摺動して
前記第1当接部1dを前記検知部7a,7bのス
ライド域に挿入離脱すると共に前記逃がし部1c
と誤消去防止爪3の突部3bとを当接させて他方
の誤消去防止爪4が作用するとき一方の誤消去防
止爪3を不作用状態とするよう構成したことを特
徴とするリバース式テープレコーダの誤消去防止
爪機構。 In a reverse type tape recorder in which a rotary magnetic head is reversed by a head switching plate 2, accidental erasure prevention claws 3 and 4 on sides A and B slide in conjunction with the swinging of the head switching plate 2, and one end On one side is the accidental erasure prevention claw 3.
A relief part 1c contacts the protrusion 3b to release the accidental erasure prevention claw 3, and a first part faces the detection parts 7a, 7b of the recording lever 7 so as to be able to come into contact with it and moves up and down in conjunction with the movement of the accidental erasure prevention claw 4. A connecting rod 1 having a contact portion 1d
and a second abutting part 3c provided on the one of the accidental erasure prevention claws 3 facing the detection part 7b, and the connecting rod 1 is slid by the swinging of the head switching plate 2, and 1, the contact portion 1d is inserted into and removed from the slide area of the detection portions 7a and 7b, and the relief portion 1c
and the protrusion 3b of the erroneous erasure prevention claw 3 are brought into contact with each other so that when the other erroneous erasure prevention claw 4 is activated, one of the erroneous erasure prevention claws 3 is rendered inactive. Tape recorder's accidental erasure prevention claw mechanism.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1909285U JPH0430669Y2 (en) | 1985-02-15 | 1985-02-15 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1909285U JPH0430669Y2 (en) | 1985-02-15 | 1985-02-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61136339U JPS61136339U (en) | 1986-08-25 |
JPH0430669Y2 true JPH0430669Y2 (en) | 1992-07-23 |
Family
ID=30508342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1909285U Expired JPH0430669Y2 (en) | 1985-02-15 | 1985-02-15 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0430669Y2 (en) |
-
1985
- 1985-02-15 JP JP1909285U patent/JPH0430669Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS61136339U (en) | 1986-08-25 |
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