This application relates to a composite part that can include a non-metal layer having attachment features, and a metal part that is joined with the non-metal layer. The metal part can include a plurality of interlocking structures that are disposed at an external surface of the metal part, where each of the interlocking structures can include an opening characterized as having a first width, and an undercut region, where the opening leads into the undercut region, and the undercut region is characterized as having a second width that is greater than the first width such that the undercut region captures and retains one of the attachment features of the non-metal layer.

Provided is an electrical connection box that includes: a box main body having one surface on which a plurality of component mounting portions in which electrical components are to be mounted are provided; a cover member covering the one surface of the box main body; a lock mechanism including a locked portion provided on a peripheral wall portion of the box main body and an elastic lock portion provided in a cantilever shape on the cover member. The top wall portion of the cover member is made of a resin material with a greater thermal conductivity than the elastic lock portion provided on the peripheral wall portion of the cover member, whereas the elastic lock portion provided on the peripheral wall portion of the cover member is made of a resin material with a greater elasticity than the top wall portion of the cover member.

Provided are a casing for an electrical apparatus for housing an electrical apparatus includes: a casing body having an opening; a cover body that includes a flat plate-like cover portion having a rectangular shape for covering the opening, and outer side surface cover portions that are continuous to respective sides of the flat plate-like cover portion and cover outer side surfaces of the casing body; and first ribs that are provided on the outer side surfaces of the casing body covered by the outer side surface cover portions and extend along the respective sides, and a power control apparatus that includes the casing for an electrical apparatus and the electrical apparatus housed in the casing for an electrical apparatus.

A housing includes a body having an opening. The body includes a peripheral portion that abuts on the opening. A cover covers at least a part of the opening. A seal is sandwiched between the cover and the peripheral portion of the body. At least one of the cover and the peripheral portion of the body includes a corner portion and a linear portion. The corner portion has a first shape that defines one of a gap between the cover and the peripheral portion of the body and a width of the seal. The linear portion abuts on the corner portion. The linear portion has a second shape that defines the one of the gap between the cover and the peripheral portion of the body and the width of the seal. The second shape is different from the first shape of the corner portion.

An electronic device includes a body frame formed by mating first to third members. The first and second members each include first to third mating surfaces. The first and second mating surfaces face corresponding surfaces in a first direction and the third mating surfaces face each other in a second direction orthogonal to the first direction. The first to third members each include fourth to sixth mating surfaces. Between the first and second members and the third member, the fourth and fifth mating surfaces face corresponding surfaces in a third direction orthogonal to the first and second directions, and the sixth mating surfaces face each other in the second direction. Microstructures for a liquid repellency are provided on at least one of the first to third mating surfaces and at least one of the fourth to sixth mating surfaces.

A housing includes a body having an opening. The body includes a peripheral portion that abuts on the opening. A cover covers at least a part of the opening. A seal is sandwiched between the cover and the peripheral portion of the body. At least one of the cover and the peripheral portion of the body includes a corner portion and a linear portion. The corner portion has a first shape that defines one of a gap between the cover and the peripheral portion of the body and a width of the seal. The linear portion abuts on the corner portion. The linear portion has a second shape that defines the one of the gap between the cover and the peripheral portion of the body and the width of the seal. The second shape is different from the first shape of the corner portion.

A housing device includes a first housing body. The first housing body includes a first housing seat and a first combination structure. The first housing seat has a first bottom surface, a first wall and an extension wall. The first wall and the extension wall are respectively extended from the first bottom surface in a direction away from the first bottom surface, and the extension wall is located at an inner side of the first wall and higher than the first wall. The first combination structure includes a hook, a base and a first bump provided as an energy director. The hook is disposed at a side of the extension wall facing the first wall. The base is protruded from the first wall and located below the hook correspondingly, and the first bump is disposed on the base.

A data storage enclosure for storing data on digital storage media has a lid that secures to a base. The enclosure has an upper insulating block that is located adjacent the lid and a lower insulating block that is located in the base. Each insulating block has a corresponding cover that overlays and protects its respective block. A storage unit has outer thermal management layers and a center layer located therebetween. The thermal management layers each contain a corresponding heat absorber that absorbs energy and changes from solid to liquid as the temperature of the storage unit begins to rise to excessive temperatures. The center layer contains a digital storage drive that is connected to a flexible cable that is connected to a sacrificial connector. When assembled, the insulating blocks and covers constrain and hold the storage unit and flexible cable.

A waterproofing structure is disposed between a first assembling component and a second assembling component of an electronic device. The second assembling component is detachably installed on the first assembling component. The waterproofing structure includes a sealing component, an abutting component and a sliding component. The sealing component is located between the first assembling component and the second assembling component. The abutting component is fixed on the second assembling component. The sliding component is slidably installed on the first assembling component. When the sliding component slides along a first direction, the sliding component forces the abutting component to drive the second assembling component to move toward the first assembling component, so that the sealing component is pressed by the first assembling component and the second assembling component.

Provided is a sealing ring, including a ring body, wherein the ring body includes a ring groove, a first convex ring is provided on each of the upper and lower surfaces of the bottom wall of the ring groove, and the first convex ring is a closed ring with the same extension direction as the ring groove. The side wall of the ring groove reduces the impact force of water, pressure between the first convex ring and sealed body is increased, and the sealing performance of the first convex ring is improved. Further provided is An LED display screen, including a module, box, power box and a plurality of sealing rings, wherein a first sealing ring is disposed between the power box and box, a second sealing ring is disposed between the box and module; the two rings have good sealing performance, which improves sealing performance of the LED screen.