Thumb wheel device capable of preventing dialing wheel from dropping

Abstract

The invention discloses a thumb wheel device capable of preventing a dialing wheel from dropping, which comprises a potentiometer with a switch, a panel, a dialing wheel, locking screws, a locking plate, fastening screws and a chassis, wherein the potentiometer with a switch is arranged on the side wall of the chassis by the fastening screws, a rotating shaft of a semicircular section of the potentiometer with the switch is used for being inserted into an inner semicircular hole at the center of the dialing wheel, the shaft is tightly locked with the dialing wheel through the locking screws, the locking plate is fixed to the dialing plate by fastening screws, the panel is provided with a slot, and the locking plate is embedded in the slot so as to prevent the dialing wheel from dropping from the rotating shaft of the potentiometer with the switch. According to the invention, the dropping problem of the dialing wheel of the thumb wheel device can be favorably solved, and the safe and reliable application of the thumb wheel device can be ensured. The thumb wheel device is suitable for controller products with harsh requirements to the dimension of the panel.

Description

technical field [0001] The invention relates to the application of operating a switch potentiometer by replacing a knob with a thumb wheel (also known as a dial wheel), in particular to a continuously adjustable thumb wheel controller in an airborne electronic product. Background technique [0002] Due to the small size of the airborne controller and the small size of the panel, the thumbwheel device has gained more and more applications on the airborne controller due to its advantages of small space occupation, convenient operation, and beautiful appearance, especially on the side wall of the product. The end-fixed switch potentiometer adopts a thumbwheel device, which is not only convenient for installation and operation, but also has been used in many cockpit controllers because of its space saving and panel size. [0003] However, the existing airborne controller also has the following defects: in the long-term toggling and airborne vibration environment of the unilatera...

AI Technical Summary

Problems solved by technology

[0003] However, the existing airborne controller also has the following defects: the thumb wheel device controller product fixed on one side is used in a long-term toggling and airborne vibration environment, and the thumb wheel will fall off due to the loosening of the locking screw.

Although the problem of the thumb wheel falling off can be solved through the above designs, these designs will increase the space occupied by the thumbwheel device or affect the appearance, and even need to change the structure and size of the related switch potentiometer

How to solve the problem of the existing dial falling off without increasing the structural space is a technical problem that needs to be solved urgently

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