Zoom demand device

Abstract

Abstract PURPOSE:To improve operability, by constituting a device so that a moving plate which is displaced selectively to the right and left by a seesaw switch energized to a neutral position by a neutral position holding spring is linked with a driving motor and a zoom ring gear only at the time of displacement from the neutral position of the moving plate. CONSTITUTION:An auto/manual switching moving plate 4 having a rack 3 engaged with a pinion 16 is provided so as to be opposed to a seesaw switch 1, a bearing 5 is mounted to an installed shaft 9 so as to be displaceable to the right and left, and on both its sides, springs 8, 8 are installed against the moving plate 4, and also 2 intermediate gears 6, 7 which are selectively meshed with the zoom ring gear 16 are borne. When the moving plate 4 is in a netural position, the gears 6, 7 are detached from the zoom ring gear 16, and when the gears 6, 7 are engaged with the zoom ring gear 16 in accordance with the moving direction of the moving plate 4, driving force is transmitted to the zoom ring gear 16 by the intermediate gears 6, 7 which are always engaged with a gear 10 of a motor 11.

Inventors

• 👤 Takashi Ito
• 👤 孝 伊藤
• 👤 Tsuneaki Kadosawa
• 👤 角沢　常明

Bibliographic Details