Abstract: Key switch mechanisms are typically used for mediating user input to computing devices. A key switch mechanism provides immediate tactile feedback to a user upon user-actuation thereof. Unlike touchscreen interfaces, existing key switch mechanisms of conventional keyboards do not provide a user with a dynamically changeable interface. Described is a key switch mechanism that comprises a circuit module, a key cap and a linkage mechanism for guiding travel of the key cap substantially along a travel axis. The linkage mechanism comprises a positioning board and a main link pivotably inter-coupling the positioning board and the key cap. The main link substantially impedes tilt of the key cap away from the travel axis during travel of the key cap therealong from a released position, whereat the key cap is biased, to a depressed position whereat a control signal is generated.

Abstract: The invention relates to an actuating device (1) for an electrical switch device comprising a body (10) upon which is mounted a hand lever (2) that rotates about a main axis (A), cooperating with a transmission shaft (3) able to control the opening or the closing of electrical contacts of the electrical switch device and elastic linking means between the hand lever (2) and the transmission shaft (3). The device also comprises means (7) for locking the rotation of the hand lever (2) with respect to the body (10), used when an angular divergence between the hand lever (2) and the transmission shaft (3) exceeds a specified threshold. The purpose of the invention is to limit the damage to the hand lever and to the electrical device when an operator attempts to return the hand lever (2) to its “Off” position whilst the contacts are welded and to prevent the beginning of electrical arcing if the operator should succeed in unsticking the contacts when rotating the hand lever 2.

Abstract: An actuation device of an electric switching device includes a body onto which is mounted a rotary control handle and a device for locking the rotation of the control handle making it possible to lock the control handle when the latter is in the “Off” position. The locking device includes a locking member that can move in translation along a main axis, a sliding element mounted on the control handle, that can move in translation along the main axis, and that defines an opening that can receive one or more padlocks in a locked position. The locking device also includes an operating mechanism interacting, on the one hand, with a locking member and, on the other hand, with the sliding element to convert the translation movement of one in a predetermined direction into a translation movement of the other in an opposite direction.

Abstract: A position switch whose box houses a switch assembly that can be maneuvered by an activation head holding a push button and located in a recess on one surface of the box so that it can be angularly adjusted at regular intervals. The head has a tubular bearing surface facing the box and in which a plunger slides for actuating the switch assembly. The bearing surface has notches at regular intervals for alignment with corresponding notches in the box recess. A lockable fork retains the head in position.