The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 24, 1995
Filed:
Jan. 21, 1994
Akio Hoshi, Chichibu, JP;
Canon Denshi Kabushiki Kaisha, Saitama, JP;
Abstract
A disc unit includes a control circuit board engaged with a base body of the disc unit, and a shield cover for noise shielding. The shield cover is also used for preventing the separation of mounting tabs extending from the circuit board and the base body by pressing them to hold the circuit board on the base body. Furthermore the shield cover is used as reinforcement for preventing the base body from distorting. With such a structure, the control circuit board is held on the base body by pressure of the shield cover so that multiple fixing members such as screws for fixing the control circuit board can be omitted. Further, since the base body is reinforced by the shield cover, the prevention of distortion of the base body is performed without increasing the thickness of the unit. The disc unit also includes a direct drive motor having a rotor yoke which receives the disc, which rotates a spindle shaft that engages the central opening of the disc. The rotor yoke is integrally provided with a chucking mechanism for the disc.