Abstract: A toy vehicle includes a chassis, at least one light guide plate, at least one sensor unit and a driving unit. The at least one light guide plate includes a first portion and a second portion and is embedded into the chassis by the first portion. The at least one sensor unit is attached on the second portion of the at least one light guide plate and includes an emitter for emitting light, and a detector for receiving the reflected light and sending a signal according to a propagation delay of a light emitted from the emitter and received by the detector. The driving unit is configured for controlling the motion of the toy vehicle according to the signal outputted from the at least one sensor unit.

Abstract: A moveable electronic toy includes a base, a base cover, two wheels and two wheel covers. The base cover is fixedly mounted on the base. The two wheels are rotatably connected to the base and exposed from the base cover. The two wheel covers is detachably coupled to the base cover and is configured for covering the wheels.

Abstract: An exemplary faceplate comprises a panel, a guiding ring and two hooks. The panel includes an inner surface and an opposite outer surface, on which a number of passageways are defined running through the inner and outer surface. The guiding ring is mounted on the inner surface of the panel around a corresponding passageway of the panel. The guiding ring defines a housing room therein that is aligned with and communicates with the corresponding passageway of the panel. Two hooks are separately mounted on the inner surface of the panel and being respectively adjacent to the guiding ring, and each hook includes a clasp formed on an end thereof and the clasp protrudes beyond the guiding ring. The height of the each hook with respect to the inner surface of the panel is higher than that of the adjacent guiding ring with respect to the inner surface.

Abstract: A fastener is for fastening wires in an electrical device. The fastener includes a base board and a catch. The base board is connected to the electrical device. The catch extends upwards from the base board. The catch includes a supporting portion extending upwards from the base board, a main portion extending from the supporting portion and above the base board, and a restricting portion extending downwards from the main portion. A vertical distance between the restricting portion and the base board is smaller than a vertical distance between the main portion and the base board. A side-wall of an electrical device using the fastener is also provided.