US 5,669,568 A · Brake device for a magnetic recording and reproducing apparatus

Abstract

A brake device for magnetic recording and reproducing apparatus, such as a slide loading type camera recorder. The supply reel brake unit includes a supply reel brake having an operating pin, and a mode switch gear having an operating protrusion pushing the operating pin in a tape running mode, thereby releasing the tape supply reel table. In addition, the supply reel brake unit may comprise a drive cam gear, a supply reel brake cooperating with the drive cam gear to selectively brake the tape supply reel table. The take-up reel brake unit includes a clutch gear engaging with the reel gear of the tape take-up reel table, a take-up reel brake having a rotation limit lever limiting the rotation of the brake in cooperation with the guide pin of the stationary base plate, a latch of the brake selectively engaging with the reel gear of the tape take-up reel table to brake the take-up reel table, and a stop pin of the take-up reel brake received by the slit of the slide base to separate the latch of the brake from the reel gear of the tape take-up reel table in a tape loading operation, thereby releasing the tape take-up reel table.

Claims15

Dependent claims

A brake device for a magnetic recording and reproducing apparatus, comprising:

a clutch gear rotatably mounted on a shaft of a slide base of a deck mechanism of said apparatus to engage with a reel gear of a tape take-up reel table;
a reel brake rotatably mounted on a shaft of said clutch gear, said reel brake being provided at a first end thereof with a rotation limiting lever for limiting a rotation of said reel brake in cooperation with the deck mechanism;
a latch provided at a second end of said reel brake to selectively engage with said reel gear so as to brake the take-up reel table;
and
a stop pin mounted on a lower surface of the second end of said reel brake, said stop pin cooperating with a slit of said slide base so as to separate said latch from said reel gear,
wherein said reel gear and said reel brake are constructed under a design condition represented by the following relation:
.theta..sub.1 :.theta..sub.2 =R.sub.2 :R.sub.1
wherein .theta..sub.1 is a rotating angle of said reel gear, .theta..sub.2, is a corresponding rotating angle of said take-up reel brake cooperating with said reel gear, R.sub.1 is a radius of a pitch circle of said reel gear, and R.sub.2 is a radius of a pitch circle of said take-up reel brake.

5 more elements

Dependencies are inferred from the claim text.

Brake device for a magnetic recording and reproducing apparatus

Life of this patent

Brake device for a magnetic recording and reproducing apparatus

Life of this patent

Abstract

Claims15