A tolerance ring having a first axial end, a second axial end, and a central axis, the tolerance ring including an annular band; a plurality of protrusions, all of the plurality of protrusions extending from the annular band; and a guide portion extending from the annular band towards the first axial end of the tolerance ring, where the guide portion includes a guide surface that is curved in an axial section.

An electronic device which can be installed and removed in an apparatus using only one hand includes a base and a positioning member. A positioning opening is formed on a first side surface of the base, and a channel is formed in the base with one end connected to the positioning opening. The positioning member is located in the channel and has a holding groove exposed from a front surface of the base. The positioning member is movable along the channel between a released position and a compressed (mounted) position. In the released position, a locking portion of the positioning member extends out of the channel via the positioning opening, in the compressed position the locking portion is retracted into the channel.

An electronic device with a detachable structure is provided. The electronic device includes a bracket, a connector, a module frame and a carried unit. The bracket includes a bracket wedging portion, wherein the bracket has a receiving recess, the receiving recess has a first side and a second side, the first side is opposite to the second side, and the bracket wedging portion is located on the first side. The connector is disposed on the second side of the bracket. The module frame is detachably connected to the bracket. The module frame can be easily attached to or detached from the bracket, reducing the time and effort required for assembly.

A tolerance ring has a hollow band with outwardly extending corrugated protrusions forming waves that engage an inner surface of a bore of a housing. At one end of the tolerance ring is an inwardly flared guide surface extending axially and radially from the band. The guide surface acts as a tapered entrance to assist the insertion of a shaft into the hollow band during assembly of the ring into the bore of the housing.

A slot module and an electronic device using the same are provided. The slot module includes a base, a slot member, a heat sink and a position limiting member. One end of the slot member is pivotally connected to the base, such that the slot member is adapted to rotate relative to the base, and a functional element is adapted to be inserted into the slot member. The heat sink and the position limiting member are all disposed on the base, wherein the position limiting member is adapted to be rotated from a first position to a second position to buckle the slot member, such that the functional component inserted into the slot member contacts the heat sink.

A tool-less quick assembly and disassembly device for a hard disk module, including a mounting rack, a hard disk accommodation cavity being provided on the mounting rack, a multilayer hard disk support structure being provided on the mounting rack inside the hard disk accommodation cavity, and a baffle being provided on the mounting rack at a position corresponding to each layer of the hard disk support structure, the baffle being provided at the end part of one end of the mounting rack, and the other end of the mounting rack being an opening end; elastic positioning mechanisms are provided on both sides of the mounting rack; elastic clamping mechanisms are provided at the bottom of the mounting rack. The invention can enable multiple hard disks to be completely assembled and disassembled without tools, has a simple structure, is easy to assemble and disassemble.

A hard disk drive (HDD) carrier bracket for use in mounting a hard disk drive (HDD) in a chassis via a HDD tray includes a first frame member and a second frame member. The second frame member is coupled to the first frame member such that the first and second frame members are moveable relative to one another, between an extended position and a collapsed position. The HDD carrier bracket is installable in the HDD tray without tools. The HDD tray is installable in the chassis without tools.

A hard disk drive (HDD) carrier bracket for use in mounting a hard disk drive (HDD) in a chassis via a HDD tray includes a first frame member and a second frame member. The second frame member is coupled to the first frame member such that the first and second frame members are moveable relative to one another, between an extended position and a collapsed position. The HDD carrier bracket is installable in the HDD tray without tools. The HDD tray is installable in the chassis without tools.

An electronic device which can be installed and removed in an apparatus using only one hand includes a base and a positioning member. A positioning opening is formed on a first side surface of the base, and a channel is formed in the base with one end connected to the positioning opening. The positioning member is located in the channel and has a holding groove exposed from a front surface of the base. The positioning member is movable along the channel between a released position and a compressed (mounted) position. In the released position, a locking portion of the positioning member extends out of the channel via the positioning opening, in the compressed position the locking portion is retracted into the channel.

A data storage device includes a tray, a circuit board module and two storage units. The tray has a carrying space. The circuit board module includes a circuit board, a pair of adapter slots and a connection slot. The pair of adapter slots are disposed with an interval at one side of the tray, and the storage units are arranged side by side in the carrying space. Each storage unit includes a carrying box and a storage component. The carrying box is pivoted with a handle, and two sides of the handle are pivoted at opposite sides of the carrying box so that the handle is capable of rotating above the carrying box. The storage component is inserted in the adapter slot to electrically connect with the circuit board.