A retention-extraction device is provided for a removable card in a chassis. The device includes an actuation rod having a cam slot, the actuation rod configured to provide linear movement along the length of the actuation rod, and an extraction lever operatively connected to a proximal end of the actuation rod and pivotally secured to the chassis. The device also includes a bell crank with a cam follower that is configured to ride in the cam slot and a latch hook that pivots between an open and closed position based on the motion of the bell crank. The linear movement of the actuation rod causes the extraction lever to apply a force to a portion of the card and causes the latch hook to pivot to an open position to allow removal of the card.

A quick release mechanism for at least partially muscle-powered two-wheeled vehicles such as bicycles having a through axle extending in the axial direction, a clamping device at a first end of the through axle and a fastener at the second end of the through axle and with a clamping mechanism for clamping the clamping device. The clamping device includes an engaging section for applying a clamping force from the clamping mechanism to the clamping device and a clamping section with an annular pressure area for clamping. The clamping device has a tubular mounting section extending from the clamping section in the direction of the second end of the through axle and to which the through axle is attached.

A cooking appliance including a body provided with a heating part, a control panel detachably provided at the body, and a coupling unit configured to allow the control panel to come into close contact with the body. The coupling unit includes a first lever rotatably provided at an inner side of the control panel and is configured to receive an external force outside the control panel. The coupling unit also includes a second lever provided in between the control panel and the body to allow the control panel to come into close contact with the body while interlocked with an operation of the first lever.

A first pinhole is formed in a first member in a section facing a second member. A second pinhole is formed in the second member in a section facing the first member. A connecting pin is inserted into the first pinhole and the second pinhole from the side of the machine center. A coming-off prevention mechanism includes a coming-off prevention lever. The coming-off prevention lever can abut the inner end surface of the connecting pin. The coming-off prevention lever is supported by the second member to be able to move between an abutting position of abutting the inner end surface of the coupling pin and a non-abutting position of not abutting the inner end surface.

A sprinkler side frame coupling device including: a side frame coupled to support frames each having a locking step formed on top thereof and having a body, first bending portions formed on both sides of the body, a horizontal portion formed from each first bending portion, a second bending portion, a space portion formed on each first bending portion, pin support portions, long holes formed on the pin support portions, shaft support portions, and inclined projection portions; a locking pin having a shape of U fitted to the long holes; and coupling members each having a plurality of inclined teeth.

The invention provides a connecting structure and a Light-Emitting Diode (LED) display device having the same. The connecting structure comprises: a first pressing plate, which including a plate body and a lock sheet provided on the plate body slidably, a first mounting hole is provided on the plate body; a second mounting hole is provided on a second pressing plate; a connecting column, penetrating through the first mounting hole and the second mounting hole respectively, a lock groove matched with the lock sheet is provided on a first end of the connecting column, a force application part located below the second pressing plate is provided on a second end of the connecting column; a lifting mechanism, connected to the second pressing plate, the second pressing plate may move towards or away from the first pressing plate under an action of the lifting mechanism by operating the force application part.

The lock catch structure comprises a first lock catch main body and a second lock catch main body. The first lock catch main body comprises a first base and a first main body rotationally connected to the first base; The second lock catch structure comprises a second base, a second main body rotationally connected to the second base, a handle hinged at the base and a draw-off locking member pivoted with the handle through a pivot shaft; one end of the draw-off locking member is limited in the groove, and the handle rotates around the pivot shaft as the support point, so that the draw-off locking member drives the first lock catch main body to move towards the second lock catch main body until the first inclined surface is pressed against the second inclined main surface.

An axially-switchable quick release device, including: a rod extending in an axial direction; a clutch shaft disposed at an end of the rod and having a meshing teeth portion and an idling ring portion; and a quick release lever having a fitting portion and a turning portion connected to the fitting portion The fitting portion has a fitting teeth portion sleeved onto the clutch shaft and movable along the axial direction and between a meshing position and an idling position. When the quick release lever is at the meshing position, the fitting teeth portion engages with the meshing teeth portion so that the quick release lever and the clutch shaft can rotate synchronously. When the quick release lever is at the idling position, the fitting teeth portion moves to the idling ring portion so that the quick release lever can rotate freely relative to the clutch shaft.

A locking device includes an operating lever, a base and a repulsion generating member, wherein the operating lever has a releasing position and a locking position relative to the base, and the repulsion generating member is arranged between the base and the operating lever and generates a repulsion force for application to the operating lever during movement from the releasing position to the locking position. When the operating lever does not completely reach the locking position due to abnormal operation, the repulsion generating member will cause the operating lever to return to the releasing position thereby provide an indication. The locking device can thus provide an indication when the locking operation does not reach the correct position, thereby avoiding user confusion and abnormal operation.

A latch mechanism is provided for latching a field-replaceable unit within an enclosure. The latch mechanism includes a pivotable latch coupled to the field-replaceable unit via a pivot, at a first side of the unit, and a spring member associated with the enclosure. The spring member is engaged by the latch and deflects with rotating of the latch from an open position to a latched position. The pivotable latch includes the first end and a second end, with the pivot being disposed closer to the first end than the second. The deflecting spring member facilitates provision of positive pressure on the unit directed towards a second side of the unit opposite to the first side to facilitate, for example, fixedly coupling a first connector at the second side to a second connector associated with the enclosure when the unit is latched within the enclosure.