A housing assembly for a component includes a base portion having a holding element, a cover portion having an actuation element, and a carrier element carrying the component. The holding element holds the carrier element by engaging with the actuation element. The actuation element applies a contact force on the holding element and is adjustable with respect to the holding element in at least one direction when the holding element is engaged with the actuation element.

An Internet of Things (IoT) apparatus including a plurality of boards and one or more connectors to couple IoT modules to one or more of the plurality of boards and to couple the plurality of boards to each other. The connectors include stacking connectors on both sides of at least some of the boards and at least some of the IoT modules to be coupled to the boards.

An example printed circuit board includes: a fixed portion disposed on the printed circuit board, the fixed portion defining a first end of a card slot to receive a card on the printed circuit board; a support bracket to be installed on the printed circuit board, the support bracket including a retaining portion to retain the card in the card slot, the retaining portion defining a second end of the card slot; and wherein the support bracket is orientable in one of: (i) a first orientation to define a first length of the card slot between the fixed portion and the retaining portion and (ii) a second orientation to define a second length of the card slot between the fixed portion and the retaining portion.

A soldering component and a method of fitting it to boards are introduced. The soldering component includes a body and a fitting portion. The fitting portion is fitted to an object. The body has an engaging portion with an elastic retraction space conducive to elastic retraction of two or more engagement portions, allowing the engagement portions to engage with another object. The soldering component has a weldable surface to be soldered to a weldable surface of the object. The weldable surface of the object has a built-in solder layer adapted to be heated for soldering the soldering component and the weldable surface of the object together. The soldering component is disposed in a carrier, taken out with a tool, compared with the object by a comparison device to determine a fitting position on the object, positioned at the fitting position with the tool, thereby being fitted to the object.

A soldering component and a method of fitting it to boards are introduced. The soldering component includes a body and a fitting portion. The fitting portion is fitted to an object. The body has an engaging portion with an elastic retraction space conducive to elastic retraction of two or more engagement portions, allowing the engagement portions to engage with another object. The soldering component has a weldable surface to be soldered to a weldable surface of the object. The weldable surface of the object has a built-in solder layer adapted to be heated for soldering the soldering component and the weldable surface of the object together. The soldering component is disposed in a carrier, taken out with a tool, compared with the object by a comparison device to determine a fitting position on the object, positioned at the fitting position with the tool, thereby being fitted to the object.

Embodiments are directed toward a mounting device for circuit boards. The mounting device preferably includes a first standoff and a first track. The first standoff is preferably configured to receive a circuit board. The first track is preferably be configured to receive the first standoff. The first standoff is preferably configured to move relative to the first track in two dimensions to facilitate receiving different circuit boards having different sizes or dimensions.

A substrate connecting structure includes a substrate that includes a flat base material having a first surface and a second surface at a side opposite to the first surface, a first wiring layer arranged on the first surface, and a second wiring layer arranged on the second surface, a through hole extending through the base material, a connection metal body that includes a connecting portion connected to the second wiring layer and a projection inserted into the through hole, and a mounted component mounted on the substrate. The connection metal body is connected to the mounted component only at a distal end surface of the projection.

A fastening device includes at least one base portion and at least one fastener portion. The base portion is connected to a first object and the fastener portion is slidably assembled to the base portion. The fastener portion cooperates with the base portion to provide a locking and an unlocking function for connecting or disconnecting a second object to or from the base portion. With these arrangements, two objects can be repeatedly and quickly connected to or disconnected from each other.

A multi-functional spacer element for spacing at least one printed circuit board from an opposite spacing surface. The spacer element can not only accomplish the spacing of one or more printed circuit boards, but can also support a fastening function to a carrier element and an electrical ground connection. A passageway extends through the main body. The spacer element includes a press-in element. The spacer element 1 includes an electrically conductive material for electrically conducting from at least a first contact surface to the press-in element.

A circuit board heat dissipation system includes circuit board unit that includes a motherboard and a daughterboard, a base seat, and a fastening unit that includes a plurality of first and second fastening components. Each first fastening component extends through the daughterboard and is engaged with the base seat. Each second fastening component includes a long fastener that extends through the base seat and the daughterboard and that is engaged with the motherboard, and a flat washer and a resilient member that are sleeved on the long fastener. The resilient member is disposed between a head portion of the long fastener and the flat washer for biasing the base seat and the daughterboard against the motherboard.