Dynamic information storage or retrieval – Dynamic mechanism subsystem – Having power driven transducer assembly
Patent
1981-02-03
1983-08-02
Stephan, Steven L.
Dynamic information storage or retrieval
Dynamic mechanism subsystem
Having power driven transducer assembly
369216, 369230, G11B 1706, G11B 1906
Patent
active
043970150
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
1. Technical Field
This invention relates to an apparatus for moving a tone arm in a record player.
2. Background Art
From the viewpoint of their drive systems, apparatus for moving a tone arm can be broadly classified into the turntable drive system which utilizes the driving force of a turntable and the exclusive motor drive system which employs the driving force of a driving motor for exclusive use in addition to the driving force of a turntable. The former requires driving-force transmission means for transmitting the drive force of the turntable to a tone arm shaft as desired, and becomes very complicated structurally. As regards the latter, granted that the driving force of the exclusive motor is similarly transmitted to a tone arm shaft, the exclusive motor can be disposed in proximity to the tone arm shaft, which brings forth the advantage that a structure simpler than the structure of the turntable drive system is permitted. Since, however, the driving motor is expensive, the latter has the disadvantage that the fabrication cost as the whole system is high.
On the other hand, in recent years, the apparatus for moving the tone arm is usually constructed so that the lead-in operation of the tone arm can be made also manually in order to select an arbitrary piece of music midway on a disk and play it.
OBJECTS OF THE INVENTION
The principal object of this invention is to provide an apparatus for moving a tone arm in a record player that employs the exclusive motor drive system as its drive system for the tone arm, the apparatus having its structure simplified to the utmost and reducing to the utmost the increase of its cost due to the cost of a driving motor.
Another object of this invention is to provide an apparatus for moving a tone arm in a record player to make it possible to play a record through either an automatic or a manual operation for the tone arm.
Still another object of this invention is to provide an apparatus for moving a tone arm in a record player which can stabilize the auto-lead-in operation and auto-return operation of the tone arm.
Further objects, features and advantages of this invention will become apparent from the following detailed description and the accompanying drawings in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a plan view of a record player to which this invention is applied.
FIG. 2 is a bottom view of an apparatus for moving a tone arm according to this invention.
FIG. 3 is a partial side view of the apparatus.
FIG. 4 is a perspective view of a rotary member seen obliquely from above.
FIG. 5 is a perspective view of the rotary member seen obliquely from below.
FIG. 6 is a partial bottom view of the apparatus immediately before the end of an auto-lead-in operation.
FIG. 7 is a partial bottom view of the apparatus at the end of play.
FIG. 8 is a partial bottom view showing a case where the tone arm has been led in by a manual operation.
FIG. 9 is a bottom view showing another aspect of performance of a select plate.
FIG. 10 is a side view of the select plate.
FIG. 11 is a side view of the select plate showing an operating relationship thereof.
FIG. 12 is a partial plan view showing still another aspect of performance of the select plate.
DETAILED DESCRIPTION
Referring to FIGS. 1 to 5, numeral 1 designates a cabinet of a record player, numeral 2 a turntable which is driven by a known direct drive system or indirect drive system, numeral 3 a tone arm which is mounted on the cabinet 1 in a manner to freely move about in the vertical direction and the horizontal direction, numeral 4 an arm rest for the tone arm 3, numeral 5 an arm lifter which moves the tone arm 3 in the vertical direction, numeral 6 a select lever for a record size, numeral 7 a start switch of an automatic performance apparatus for the tone arm according to this invention, numeral 8 a cut switch of the apparatus, and numeral 9 a first repeat switch of the apparatus.
A chassis A is mounted on the inner bottom part of the cabinet 1. The essential portions of the automatic pe
REFERENCES:
patent: 3533632 (1970-10-01), Hammond et al.
patent: 3550986 (1970-12-01), Takahashi
patent: 3697087 (1972-12-01), Takahashi
patent: 4183538 (1980-01-01), Saito
Katoh Electrical Machinery Co. Ltd.
Oujevolk George B.
Stephan Steven L.
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