A plug-in switch fixing structure and a keyboard with the structure, and relates to the field of switch assembly technologies. The plug-in switch fixing structure includes a pin and a contact ring, where the pin is fixedly arranged on a corresponding structure, and the width of a middle portion of the pin is greater than the width of a lower end of the pin; when the pin is inserted into the contact ring, an inner side wall of the contact ring can squeeze the pin and abut against the pin; and the contact ring is fixedly arranged at a corresponding position. The keyboard includes a switch and a PCB, the switch is provided with a contact piece and a terminal, and the pin is fixedly arranged below the contact piece and/or the terminal; the PCB is provided with a hole, and the contact ring is located in the hole.

Example implementations relate to modular keyboards. In an example, a modular keyboard can include a keyboard module including keys, where the keyboard module includes a plurality of locking mechanisms, and a lattice removably coupled by the plurality of locking mechanisms to the keyboard module, where the lattice comprises a keyboard overlay.

Examples of molded buttons are described. In some examples, a button includes a transparent molded member. The button includes an opaque molded member attached to the transparent molded member. The opaque molded member includes a shield positioned along an edge of the transparent molded member. The shield is disposed to reduce backlight from exiting at the edge of the transparent molded member.

The invention disclosed is an arc protection system for an electrical switch mounted in an electrical cabinet. The system includes an arc suppression housing pivotally mounted in the electrical cabinet. The housing comprises an arc extinguishing chamber having an opening configured to face separable contacts of an electrical switch mounted in the cabinet when the housing has been rotated about the pivot into a closed position. The arc extinguishing chamber is configured to extinguish an electric arc produced by opening the separable contacts when the housing is in the closed position. The system further includes an interference mechanism mounted on the arc suppression housing. The interference mechanism is configured to prevent closure of an access door of the electrical cabinet, when the housing has been rotated about the pivot into an open position configured to enable operator access to the separable contacts of the electrical switch.

Example implementations relate to modular keyboards. In an example, a modular keyboard can include a keyboard module including keys, where the keyboard module includes a plurality of locking mechanisms, and a lattice removably coupled by the plurality of locking mechanisms to the keyboard module, where the lattice comprises a keyboard overlay.

According to various embodiments, an electronic device comprises a key button that can be assembled to keep the key button in place in the housing of the electronic device and functional without having to completely assemble the housing of the electronic device.

Embodiments of the present invention provide a circuit structure that allows the use of a single sided Printed Circuit Board (PCB) with a mechanical key structure that has a light emitting element in the middle of the key structure. An LED with pins for protruding through a printed circuit board allows a layout only on the bottom side of the PCB. In one embodiment, the PCB includes at least one low ohm resister forming a bridge for a switch matrix conductor over a perpendicular switch matrix conductor.

An object of the present invention is to provide an engine starting device which can prevent rattling of an ignition switch in a coupled state. Provided is an engine starting device including: a housing 2 accommodating a rotational operation shaft 1; and an ignition switch 3 coupled to the housing 2 and configured to be actuated upon application of rotational operation force to the rotational operation shaft 1. The ignition switch 3 is fitted and held in an attachment recess 4 formed in the housing 2, in such a way as to be prevented from falling from the attachment recess 4 by appropriate snap-locking portion 5. The peripheral wall surfaces of the ignition switch 3 and the attachment recess 4 on the fitting start end side and the peripheral wall surfaces thereof on the fitting finish end side come into pressure contact with each other substantially simultaneously with each other when the depth of the fitting of the ignition switch 3 to the attachment recess 4 reaches a predetermined depth, to thereby reduce rattling in the radial direction.

Disclosed are a rocker device and a controller. The rocker device includes a mounting base and a rocker assembly, the mounting base is provided with a first accommodating cavity with an opening, the mounting base is configured to connect with the controller, the rocker assembly is provided in the first accommodating cavity and snapped with the mounting base, the rocker assembly is configured to electrically connect with the controller to achieve multi-directional control.

Examples of molded buttons are described. In some examples, a button includes a transparent molded member. The button includes an opaque molded member attached to the transparent molded member. The opaque molded member includes a shield positioned along an edge of the transparent molded member. The shield is disposed to reduce backlight from exiting at the edge of the transparent molded member.