JPH0260932U

JPH0260932U -

Info

Publication number: JPH0260932U
Application number: JP13745288U
Authority: JP
Priority date: 1988-10-20
Filing date: 1988-10-20
Publication date: 1990-05-07
Anticipated expiration: 2003-10-20
Also published as: JPH079214Y2

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示すものであり、第１
図は第１実施例によるテーププレーヤの全体構造
を示す斜視図、第２図〜第６図は第１実施例によ
るテーププレーヤの駆動機構部分を動作モード別
に示す平面図であり、第２図はストツプモード、
第３図はプレイモード、第４図はＦＦモード、第
５図はレビユーモード、第６図はＲＥＷモードで
ある。第７図は第２実施例によるテーププレーヤ
の駆動機構部分を示すものであり、リバースプレ
イモードを示す平面図である。第８図Ａ〜Ｄは検
知カムによるスイツチ検知動作を順に示す部分平
面図、第９図はモータ制御のための回路を示すブ
ロツク図、第１０図Ａはプレイモードからストツ
プモードへ移行するときのモータ制御を示す線図
、同図Ｂはそのときのスイツチ出力を示す線図、
第１１図ＡはＦＦモードからストツプモードへ移
行するときのモータ制御を示す線図、同図Ｂはそ
のときのスイツチ出力を示す線図である。１……シヤーシ、２，３……リール台、４，５
……リールギヤ、６……キヤプスタン、７……フ
ライホイール、８……ベルト、９……駆動ギヤ、
１２……遊星ギヤ、１５……モード切換ギヤ、１
５ａ……歯の欠損部、１５ｂ……歯、１６……第
１の切換カム、１７，２７……第２の切換カム、
１８……ストツパ、２０……ヘツドベース、２０
ａ……折曲げ片、２１……スプリング、２２……
ピンチローラ、３１……検知カム、３１ａ……第
１の凸部、３１ｂ……第２の凸部、３１ｃ……平
坦部、３２……検知レバー、３６……モータ駆動
回路、３７……制御回路、ＳＷ……検知スイツチ
、Ｈ……磁気ヘツド、Ｍ……モータ。 The drawings show an embodiment of the present invention.
FIG. 2 is a perspective view showing the overall structure of the tape player according to the first embodiment, FIGS. stop mode,
3 shows the play mode, FIG. 4 shows the FF mode, FIG. 5 shows the review mode, and FIG. 6 shows the REW mode. FIG. 7 shows the drive mechanism of the tape player according to the second embodiment, and is a plan view showing the reverse play mode. Figures 8A to 8D are partial plan views sequentially showing the switch detection operation by the detection cam, Figure 9 is a block diagram showing the circuit for motor control, and Figure 10A is the motor when transitioning from play mode to stop mode. A diagram showing the control, Figure B is a diagram showing the switch output at that time,
FIG. 11A is a diagram showing the motor control when shifting from the FF mode to the stop mode, and FIG. 11B is a diagram showing the switch output at that time. 1... Seat, 2, 3... Reel stand, 4, 5
... Reel gear, 6 ... Capstan, 7 ... Flywheel, 8 ... Belt, 9 ... Drive gear,
12... Planetary gear, 15... Mode switching gear, 1
5a... Tooth missing portion, 15b... Teeth, 16... First switching cam, 17, 27... Second switching cam,
18...stopper, 20...head base, 20
a...Bending piece, 21...Spring, 22...
Pinch roller, 31...Detection cam, 31a...First protrusion, 31b...Second protrusion, 31c...Flat portion, 32...Detection lever, 36...Motor drive circuit, 37...Control Circuit, SW...detection switch, H...magnetic head, M...motor.

Claims

[Scope of Claim for Utility Model Registration] A capstan that is rotationally driven by a motor, a drive gear that rotates integrally with the capstan, and a motor that rotates around the drive gear according to the direction of rotation of the drive gear while constantly meshing with the drive gear. A pair of orbiting planetary gears are arranged at a position where the orbiting planetary gear meshes with the orbiting planetary gear when the drive gear rotates in one direction, and a position where the orbiting planetary gear meshes when the drive gear rotates in the opposite direction. A reel gear, a reel stand rotated by the reel gear, and a planet gear arranged to mesh with the planet gear in the middle of a circular trajectory in which the planet gear moves from a position where it meshes with one reel gear to a position where it meshes with the other reel gear; A mode switching gear partially provided with teeth so that the reel can be rotated by a certain angle by the gear, and a head base provided with a magnetic head and movable in directions approaching and away from the reel stand. a first switching cam that is disposed coaxially with the mode switching gear and presses the head base to move the magnetic head in the direction of the magnetic tape while the mode switching gear is rotated in one direction by the planetary gear;
a second switching cam that presses the head base to move the magnetic head in the direction of the magnetic tape while the mode switching gear is rotated in the opposite direction by the planetary gear; and a second switching cam that rotates together with the mode switching gear. and the first
a first convex portion that operates the detection switch at a rotational position in which the switching cam presses the head base and the magnetic head is completely moved toward the magnetic tape;
When the second switching cam presses the head base, the detection switch is operated at a rotational position just before the movement of the magnetic head is completed, and detection is performed at a rotational position at which the magnetic head has finished moving completely in the direction of the magnetic tape. A tape player comprising: a detection cam formed with a second protrusion for returning the switch;