JPS61149137U

JPS61149137U -

Info

Publication number: JPS61149137U
Application number: JP2925185U
Authority: JP
Priority date: 1985-03-01
Filing date: 1985-03-01
Publication date: 1986-09-13

Description

[Brief explanation of the drawing]

第１図は本考案のテープレコーダのヘツドベー
ス移動装置の実施例を示す正面図、第２図は第１
図の―線に沿う断面図、第３図は従来のヘツ
ドベース移動装置の例を示す第１図と同様の正面
図、第４図は第３図の―線に沿う断面図、第
５図は第３図の矢視図である。１……シヤーシ、２……ヘツドベース、３……
引張ばね（第一のばね手段）、５……モータブラ
ケツト、６……モータ、７……ウオーム、８……
ウオームホイル、１２……パワアシストギヤ、１
５……折曲片、１６……支点孔（揺動支点）、１
７……押圧操作部、１９……ばね軸、２１……ば
ね座、３０……円錐圧縮トーシヨンばね（第二、
第三のばね手段）、３０ａ……圧縮コイル部、３
０ｂ，３０ｃ……脚部。 FIG. 1 is a front view showing an embodiment of the head base moving device for a tape recorder according to the present invention, and FIG.
FIG. 3 is a front view similar to FIG. 1 showing an example of a conventional head base moving device, FIG. 4 is a sectional view taken along line - in FIG. 3, and FIG. FIG. 4 is a view taken along the arrows in FIG. 3; 1... Chassis, 2... Head base, 3...
Tension spring (first spring means), 5...Motor bracket, 6...Motor, 7...Worm, 8...
Worm wheel, 12...Power assist gear, 1
5... Bending piece, 16... Fulcrum hole (swinging fulcrum), 1
7... Press operation part, 19... Spring shaft, 21... Spring seat, 30... Conical compression torsion spring (second,
third spring means), 30a...compression coil section, 3
0b, 30c...legs.

Claims

[Claims for Utility Model Registration] (1) A head plate having a magnetic head and movable between a play position and a stop position, a first spring means for urging the head plate to move toward the stop position, resisting this first spring means;
a power assist gear that moves the head plate toward the play position, a motor having a worm, an intermediate gear that includes a worm wheel that meshes with the worm and transmits rotation of the worm to the power assist gear, and supports the motor; A tape in which a chassis supports a motor bracket that can be oscillated to disengage the worm and the worm wheel, and a second spring means that biases the motor bracket in a direction in which the worm and the worm wheel engage. The head base moving device for a recorder is characterized in that third spring means is provided between the chassis and the motor bracket for urging the motor bracket to move in a direction in which the worm of the motor approaches or moves away from the worm wheel. head base moving device for tape recorders. (2) In paragraph 1 of the claims for utility model registration,
The third spring means is comprised of a single compression torsion spring that also serves as the second spring means, and the compression coil portion of the compression torsion spring swings the motor bracket in the direction in which its worm engages with the worm wheel. A head base moving device for a tape recorder in which a pair of legs, one of which is hung on a chassis and the other on a motor bracket, urges the motor bracket to move in a direction in which a worm approaches or moves away from a worm wheel. (3) In paragraph 2 of the claims for utility model registration,
A compression torsion spring is a tape recorder head base moving device made of a compression conical torsion spring.