A mobile electronic device includes a main framework, a back cover, a door cover, a functional module and a stop element. The back cover covers the main framework and has an expansion window. The door cover covers the expansion window. The functional module is disposed on an inner side of the door cover and electrically connected to a motherboard in the main framework. An operation interface corresponding in position to an outer side of the door cover is disposed on one side of the functional module. One side and the other side of the functional module oppose each other. The stop element is disposed on the inner side of the door cover, abuts against the other side of the functional module, and thus prevents the functional module from retracting under an external force. Therefore, the mobile electronic device is insusceptible to a collision and a fall.

Methods, apparatus, and systems provide wireless remote control of firearm accessories using ultrasonic communication through air. In some variations a transmitter and a receiver used in these methods, apparatus, and systems need not be in line-of-sight, so the location of the accessory on the firearm may be selected independently of the location of remote controls for the accessory. The firearm accessories may be or include, for example, laser pointers and illuminators.

A mobile phone case comprising a protective case element designed for coupling to a mobile phone with a first rechargeable battery, a wireless charging system embedded in the case element, a terminal conductively coupled with the wireless charging system, the terminal configured for conductively coupling with a power port in the mobile phone, an electronic cigarette element removably coupled to the case element, wherein when the terminal is conductively coupled with the power port in the mobile phone, and the case element is placed in proximity to a charging station, the wireless charging system charges the first rechargeable battery of the mobile phone and the second rechargeable battery of the electronic cigarette element.

This is directed to an electronic device enclosure. The enclosure includes an outer periphery member forming an outer surface of a device, and to which an internal platform is connected. Electronic device components can be assembled to one or both surfaces of the internal platform. The enclosure can include front and back cover assemblies assembled to the opposite surfaces of the outer periphery member to retain electronic device components. One or both of the cover assemblies can include a window through which display circuitry can provide content to a user of the device.

The present invention embodiment provides a terminal cover body and a terminal, said terminal cover body being used for covering the device body of the terminal and encapsulating electronic components on the device body. The terminal cover body comprises: a casing body, wherein a slide-groove is provided in the casing body and a slide-block is provided in the slide groove; a lock engagement component which comes into contact with the slide-block; pushing the slide-block causes the lock engagement component to move between a first state and a second state, wherein, in the first state the lock engagement component is engaged with the device body and the casing body is tightly connected to the device body; in the second state, the lock engagement component is detached from the device body and the casing body can be separated from the device body.

A portable electronic instrument that has a connection port for inserting a connector and includes a built-in spring having a protrusion portion protruding in a lateral direction inside the connection port, a connector 10 has an insertion portion 12 which is inserted in the connection port 16 and includes connection members 31, 32 which respectively have hooking portions 23, 24 able to be hooked at the protrusion portions of the built-in springs inside a main body.

Disclosed herein is a multifunction core for use with a wide variety of belt connectors, operating systems, mobile devices, and replaceable cases. The features of the multifunction core are controlled by a dedicated application program installed in the mobile device.

A combined cover and power cord includes a cover adapted to fit around the existing portable electronic device. The cover has a posterior face provided with a groove. A flexible and deformable power cord is removably attached to the groove in such a manner that a first portion of the power cord is selectively peeled away from the posterior face while a remaining second portion maintains direct contact with the posterior face. Advantageously, an entire longitudinal length of the power cord is positioned at the posterior face when each of the first portion and the second portion are coplanar with the posterior face.

The present disclosure provides a metal shell of communication equipment. The metal shell of communication equipment includes a metal substrate, a slit penetrating an inner and an outer surface of the metal substrate, a plastic-supporting layer formed on the inner surface of the metal substrate and a decorative layer formed on the outer surface of the metal substrate, wherein a width of the slit on the outer surface of the metal substrate is 15-500 μm, a width of the slit on the inner surface of the metal substrate is 20-600 μm, and a ratio of the width of the slit on the inner surface of the metal substrate to the width of the slit on the outer surface of the metal substrate is between 1.05:1 and 1.5:1.

An electronic device is provided. The electronic device includes a housing, a first printed circuit board seated inside the housing, and a second printed circuit board seated inside the housing such that a height of the second printed circuit board from the second surface is different from that of the first printed circuit board, wherein the first printed circuit board includes a mounting part on which at least one component is mounted, a first connector which extends from a first part of the mounting part. A portion of the first connector being substantially perpendicular to the mounting part and configured to be connected to the second printed circuit board, and a second connector which extends from a second part of the mounting part and configured to be connected to the second printed circuit board.