Defond Components Limited

Defond Electech Co., Ltd

Chi Ming Lai

Cheng Chen Nieh

A control knob for controlling operation of a machine, the control knob including: an attachment surface configured for attaching the control knob to a surface of the machine; a display member comprising an electronic display module disposed thereon; a motion sensor configured for sensing motion of the user's hand, said sensor being operably-connected to the display member such that, responsive to the motion sensor sensing motion of the user's hand, the display member is configured to switch operation from a sleep mode into an active mode; an operational mode display controller for controlling display of operational modes of the machine upon the electronic display module, said operational mode display controller being configured for rotational movement around the electronic display module amongst a plurality of rotational positions, said operational mode display controller being operably connected with the electronic display module such that, responsive to the rotational movement of the operational mode display controller amongst the plurality of rotational positions, the electronic display module is configured to display a plurality of operational modes of the machine corresponding to the plurality of rotational positions; and an operational mode selector for controlling selection of one of the plurality of operational modes of the machine when said one of the plurality of operational modes is displayed on the electronic display module, the operational mode selector being configured for depressible movement to actuate selection of the operational mode displayed on the electronic display module.

Control knob with motion sensing for controlling operation of a machine

A speed control switch includes a base. An upper end of the base is provided with a switch assembly. A side of the base is provided with a PCB board and a slide terminal. The PCB board is provided with a first contact plate. The slide terminal is slidably connected with the first contact plate. The base is provided with a trigger assembly for driving the slide terminal to slide along the first contact plate and to close the switch assembly. The speed control switch can regulate the speed of a motor precisely. The structure is compact to reduce the size of the switch, so that it is convenient for operation.

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Dongguan, China

Chi Ming Lai