The invention relates to an operating device for a motor vehicle, comprising an operating element, which can be lowered by application of force; a snap dome arranged below the operating element for applying haptic feedback to the operating element when the snap dome is deformed by means of the operating element lowering; a blocking body made of an electroactive polymer arranged below the operating element and next to the snap dome, the shape of which blocking body can be altered depending on an electrical voltage applied thereto such that lowering of the operating element is blocked or lowering of the operating element for deforming the snap dome is enabled; a detection apparatus for detecting a contact position of a finger on the operating element; a control apparatus which is set up to adjust a voltage at the blocking body depending on the detected contact position of the finger. The invention further relates to a method for operating an operating device and to a motor vehicle comprising an operating device of this kind.

A keyboard device includes a base plate, a key structure and a membrane switch circuit member. The membrane switch circuit member includes a first board and a second board. The first board includes a first circuit pattern, a conductive paste mark and a first insulation layer. The conductive paste mark is dispensed or sprayed on the first board or the first circuit pattern to define an equivalent resistance. Consequently, a ghosting problem is avoided. The second board includes a second circuit pattern and a second insulation layer. Since the first contact and the second contact are separated from each other through the first insulation layer and the second insulation layer, it is not necessary to install the separation layer in the membrane switch circuit member.

A method of mitigating self-actuation of a switch may comprise generating a tracking signal, based on an input signal that the switch is configured to convey, and combining the tracking signal with an actuating signal to generate a modified actuating signal. The actuating signal may be configured to change a state of the switch from a first state (e.g., ON) to a second state (e.g., OFF). The method further comprises selectively applying the modified actuating signal to a gate of the switch. A switch self-actuation mitigation system may comprise a first coupling device for electrically couple an AC component of a first signal to a node, where the first signal is applied a switch input. The system may further comprise a second coupling device configured to electrically couple an actuating signal to the node, and a driving device configured to selectively couple the node to a gate of the switch.

The invention provides an electric drill including a bracket with a handle, a drill rod, a motor assembly, and a switch assembly. The switch assembly includes a first micro switch configured to activate or deactivate the motor assembly, a switch pivotably mounted on the handle through a pivot and cooperating with the first micro switch, and a self-locking button engaged with the switch and configured as: when the self-locking button is in a first state, the self-locking button abuts against the switch to prevent the switch from rotating around the pivot; when the self-locking button is in a second state, the self-locking button is disengaged with the switch, and the switch can rotate around the pivot.

A four-way switch including a knob configured to be tilted in four directions to perform a switching operation in the four directions; a housing to which the knob is attached in a tiltable manner; a stopper formed on a surface of the housing so as to protrude by a predetermined height, the stopper being configured to limit a downward motion of the knob by contacting a portion of a lower surface of the knob while the knob is tilted; a guide protrusion formed on the lower surface of the knob so as to protrude by a predetermined length; and a guide groove portion formed on the surface of the housing so as to protrude by a predetermined height so as to face the guide protrusion, the guide groove portion including a recess portion having a structure that engages with the guide protrusion.

A keyboard device includes a supporting plate, a keycap, a stopping structure and a switching module. The stopping structure is arranged between the supporting plate and the keycap, and located near an outer edge of the keycap. The switching module is located under the keycap and connected with the stopping structure. While the switching module is moved relative to the supporting plate in a second axial direction, the stopping structure is correspondingly moved. When the switching module is in a first status, the stopping structure is located near the outer edge of the keycap. When the switching module is in a second status, the stopping structure is moved to a position under the first outer edge of the keycap to stop the movement of the keycap.

Embodiments of negative pressure wound therapy systems and methods are disclosed. In one embodiment, an apparatus includes a housing, a negative pressure source, a canister, an antenna, and one or more controllers. The negative pressure source can provide negative pressure via a fluid flow path to a wound dressing. The canister can be positioned in the fluid flow path and collect fluid removed from the wound dressing. The antenna can be supported by the housing and wirelessly communicate with an electronic device. The antenna can be oriented in the housing to face downward toward the ground when the negative pressure source is providing negative pressure. The one or more controllers can activate and deactivate the negative pressure source and transmit first data to the electronic device using the antenna or receive second data from the electronic device using the antenna.

An electrical control mechanism having a support. A central body that is movable in rotation about a central axis of rotation (AXROTC) carries a button that is movable in rotation relative to the central body about an offset axis of rotation (AXROTD) parallel to the central axis of rotation (AXROTC). First return means are interposed between the central body and the button, with second return means being interposed between the central body and the support. Two primary electric switches are interposed between the button and the central body on either side of a plane containing the central axis of rotation (AXROTC) and the offset axis of rotation (AXROTD). Two secondary electric switches are interposed between the support and the central body on either side of the plane.

A dial apparatus includes an operation member to be rotatably operated, a contact member including a plurality of contact portions and configured to rotate as the operation member rotates, and a substrate having a signal pattern provided on a plurality of concentric circles with a center at a rotation center of the operation member. The dial apparatus outputs a binary code when the plurality of contact portions contact the signal pattern as the operation member rotates. The signal pattern includes a reference signal area connected to a reference potential, a first signal area configured to output a first signal, and a second signal area configured to output a second signal. Two of the plurality of contact portions are provided on a predetermined concentric circle in the signal pattern and contact a signal pattern that includes the reference signal area and the first signal area.

According to various embodiments, a device may be provided. The device may include: a switch; a memory configured to store information indicating a debounce time; a switch closed determination circuit configured to determine whether the switch is depressed based on the debounce time; and an age compensation circuit configured to update the debounce time based on an age of the device.