Provided are a set and a display apparatus. The set includes a display module, a bezel, a back housing and a system board. The bezel is sleeved over a periphery of the display module. The back housing includes a first shell on a side opposite to a back plate of the display module, and a second shell adjacent to an inner peripheral surface of the bezel. One end of the second shell is connected to an edge of the first shell, and the other end of the second shell is provided with a support portion for supporting an edge of the display module so that a reserved space for accommodating the system board is formed between the display module and the first shell, and the second shell is fixedly connected to the bezel to implement configuration and assembly of the system board, thereby improving the user experience.

A sheet metal part for use in housing for accommodating devices such as electrical, electronic and optical devices is described. The sheet metal part comprises a penetrable opening through which the shank of a screw may be provided to bring the penetrable opening from an unpenetrated state to a penetrated state. The penetrable opening in the unpenetrated state is covered by an airtight coating layer, has a central area configured to accommodate a threaded shank of the screw and a lug extending radially outward from the central area over some distance, and the lug of the penetrable opening is configured to be bent back with the central area without coming loose from the sheet metal part when the penetrable opening is brought in the penetrated state by the shank of the screw.

A sheet metal part for use in housing for accommodating devices such as electrical, electronic and optical devices is described. The sheet metal part comprises a penetrable opening through which the shank of a screw may be provided to bring the penetrable opening from an unpenetrated state to a penetrated state. The penetrable opening in the unpenetrated state is covered by an airtight coating layer, has a central area configured to accommodate a threaded shank of the screw and a lug extending radially outward from the central area over some distance, and the lug of the penetrable opening is configured to be bent back with the central area without coming loose from the sheet metal part when the penetrable opening is brought in the penetrated state by the shank of the screw.

A communication device includes a case, a cover, a signal processing module and a signal switching module. The cover whereon the signal processing module is disposed is detachably assembled with the case. The signal switching module is disposed on the case and includes a connection component and a conductive component. The connection element includes a switching element, a chamber, a device port and a module port. The device port is connected to external devices. The switching element is movably disposed inside the chamber. The conductive component is located inside the case, and is spaced from the device port by the switching element when a signal transmission terminal of the signal processing module is inserted into the module port, and further contacts against the device port when the signal transmission terminal is removed from the module port, so as to maintain signal transmission between external devices.

A communication device includes a case, a cover, a signal processing module and a signal switching module. The cover whereon the signal processing module is disposed is detachably assembled with the case. The signal switching module is disposed on the case and includes a connection component and a conductive component. The connection element includes a switching element, a chamber, a device port and a module port. The device port is connected to external devices. The switching element is movably disposed inside the chamber. The conductive component is located inside the case, and is spaced from the device port by the switching element when a signal transmission terminal of the signal processing module is inserted into the module port, and further contacts against the device port when the signal transmission terminal is removed from the module port, so as to maintain signal transmission between external devices.

A case includes a case body, a case cover and a connecting mechanism, the case body is provided with a cavity and an opening in communication with the cavity; the case cover covers the opening; and the connecting mechanism is connected between the case body and the case cover, at least one connecting mechanism comprises a reinforcing member, the reinforcing member is connected to the case body, and the material and/or thickness and/or contact area of the reinforcing member of the at least one connecting mechanism is different from that of reinforcing members of the other connecting mechanisms. The technical scheme of the utility model can prevent the case cover from flying out to cause a potential safety hazard, when a machine in the case explodes.

A case includes a case body, a case cover and a connecting mechanism, the case body is provided with a cavity and an opening in communication with the cavity; the case cover covers the opening; and the connecting mechanism is connected between the case body and the case cover, at least one connecting mechanism comprises a reinforcing member, the reinforcing member is connected to the case body, and the material and/or thickness and/or contact area of the reinforcing member of the at least one connecting mechanism is different from that of reinforcing members of the other connecting mechanisms. The technical scheme of the utility model can prevent the case cover from flying out to cause a potential safety hazard, when a machine in the case explodes.

The present disclosure relates to an explosion-proof housing with a non-metal first housing part and a non-metal second housing part which are bonded together at a connection point in order to close off an inner volume of the explosion-proof housing in an explosion-proof or ignition-proof manner from an explosive atmosphere. Each housing part has at least one reinforcement assembly which is arranged in the region of the connection point between the two housing parts. Each reinforcement assembly has a reinforcement protrusion and a metal reinforcement element. Upon establishment of the connection between the housing parts, preferably one respective reinforcement assembly of the first housing part and one respective reinforcement assembly of the second housing part lie opposite each other. The reinforcement assemblies lying opposite each other can additionally optionally be connected to each other by means of at least one coupling element, preferably a metal coupling element.

The present disclosure relates to an explosion-proof housing with a non-metal first housing part and a non-metal second housing part which are bonded together at a connection point in order to close off an inner volume of the explosion-proof housing in an explosion-proof or ignition-proof manner from an explosive atmosphere. Each housing part has at least one reinforcement assembly which is arranged in the region of the connection point between the two housing parts. Each reinforcement assembly has a reinforcement protrusion and a metal reinforcement element. Upon establishment of the connection between the housing parts, preferably one respective reinforcement assembly of the first housing part and one respective reinforcement assembly of the second housing part lie opposite each other. The reinforcement assemblies lying opposite each other can additionally optionally be connected to each other by means of at least one coupling element, preferably a metal coupling element.

Devices and methods for detecting and reporting a battery tamper event with regard to an intrinsically-safe or explosion-proof device while the device is located in a hazardous environment. The device may include a location sensor for determining that the device is in a hazardous location. While in the hazardous location, the device may detect an open enclosure event using a sensor and, if so, it may monitor for detection of a battery tampering event. The battery tampering event may include battery replacement or battery charging. The battery tamper event may be reported to a remote server over a wireless channel when it occurs.