An arc path forming unit and a direct current relay including same are illustrated. The arc path forming unit according to an embodiment of the present invention comprises multiple magnets. Each of the magnets is configured to form a magnetic field at a point where each stationary contact is located. Each of the magnets located adjacent to each stationary contact is configured such that the opposite surfaces thereof have different polarities. A current flowing through a stationary contact and a movable contact and a magnetic field formed by each of the magnets generate an electromagnetic force. The electromagnetic force travels in a direction away from the center of the direct current relay. Therefore, a generated arc travels in the direction of the electromagnetic force and is thus moved in a direction away from the center of the direct current relay. Accordingly, the direct current relay can be prevented from being damaged.

A magnetically activated switch comprises an arm member, an actuating member, and a switch. The arm member has a first magnet and the actuating member has a second magnet. The actuating member is configured and arranged to move relative to the arm member thereby moving the second magnet relative to the first magnet. The second magnet has a repulsion force to the first magnet. The switch has a contact. Movement of the second magnet in a first direction past the first magnet positions the contact in an open position and movement of the second magnet in a second direction past the first magnet positions the contact in a closed position.

The invention relates to a remote-control system (1) comprising: a pushbutton (8) that can be pressed by a user for inputting information in that the user applies a pressure in a direction (18); a sensor magnet (23) arranged on the underside of the pushbutton (8), when viewed in the pressure application direction (18); and an armature magnet (27) arranged below the pushbutton (8), when viewed in the pressure application direction (18), and fixed relative to the pushbutton (8), wherein the magnetic poles (39, 41) of the sensor magnet (23) and of the armature magnet (27) are arranged in such a way that the pushbutton (8) is pressed by the sensor magnet (23) away from the armature magnet (27), against the pressure application direction (18).

A key with balance rods and a keyboard are provided. The key includes a base plate. A sensing component is disposed on the base plate. An intermediate plate is disposed on the sensing component. The intermediate plate has a key hole and a receiving chamber which penetrate upper and lower surfaces of the intermediate plate. A keying portion is disposed on the base plate. Balance rods are disposed between a lower surface of the keying portion and a lower surface of the intermediate plate or base plate. Two balance rods run in the direction of X-axis or the direction of Y-axis, whereas one balance rod runs in the other direction and between the two balance rods. The three balance rods neither cross nor overlap. The key with balance rods and the keyboard have a comfortable feel and are applicable to laptops with thin keyboards, tablets, and smartphone keyboards.

A power-assisted reset magnetic proximity switch that has a shell that has an inner chamber provided with a magnet, a first terminal and a second terminal; the first terminal and the second terminal are disposed in parallel at intervals, each vertically inserted into the lower end plate of the shell; the upper end of the second terminal is transversely provided with an elastic contact piece; the free end of the elastic contact piece is disposed above the first terminal; a power-assisted rod is disposed in the shell, outer end of which is hinged with the shell; an elastic tongue piece is disposed on the elastic contact piece; the free end of the elastic tongue piece abuts against the inner end of the power-assisted rod; the outer end of the power-assisted rod is provided with a limiting insertion plate that forms an L-shaped structure with the power-assisted rod.

Proximity switches include a hermetically sealed unit that can be used in harsh environments and under significant pressures, such as underwater and in nuclear power facilities, without having any parts that would require replacement or periodic maintenance. The proximity switches are preferably switches actuated by physical movement of a contact in response to changing magnetic forces. The switches are preferably disposed in a body tube optionally including a hermetic seal assembly to seal an open end of the body tube and/or a ferrule that prevents electrical wires attached to the switch inside the body tube from being pulled away from the switch. Further, the switches preferably maintain a contact pressure between electrical contacts sufficient to withstand acceleration seismic testing of 10 g with no contact discontinuity.

An improved magnetic switch assembly (16) has a housing (24), a first electrode (40) positioned within the housing (24), a second electrode (42), and a magnetically movable component (48) located within the housing (24) and shiftable between a first position in simultaneous contact with electrodes (40, 42), and a second position out of such simultaneous contact. The electrode (40) has a radially enlarged contact section (44, 58) adjacent the free end thereof which prevents hangup or sticking of component (48) in the first position.

A power-assisted magnetic proximity switch comprises a shell; the inner chamber of the shell is provided with a magnet, a first terminal and a second terminal; the first terminal and the second terminal are disposed in parallel at intervals, and each terminal vertically penetrates into the lower end plate of the shell; the upper end of the second terminal is transversely provided with an elastic contact piece; the free end of the elastic contact piece is disposed above the first terminal; a power-assisted rod is disposed in the shell, and the outer end of the power-assisted rod is hinged with the shell; an elastic tongue piece is disposed on the elastic contact piece.

The timepiece includes a chronograph mechanism with a coupling device including an operating member and a switching member which can be switched alternately between two stable positions coupled state and uncoupled state. This timepiece includes a magnetic system formed of a first bipolar magnet fixed to the switching member, a second bipolar magnet fixed to the support of the switching device in order to continually offer a magnetic interaction with the first bipolar magnet, and at least one highly magnetically permeable element forming the operating member and able to undergo a reciprocating motion between two operating positions. The switching device is arranged so that, when the highly magnetically permeable element is in its first operating position, the two magnets generate between them a force of magnetic repulsion and so that, when the highly magnetically permeable element is in its second operating position, the two magnets generate between them a force of magnetic attraction.

A keyswitch includes a base plate, a cap having a longitudinal axis, a returning device, a support mechanism, and a lifting mechanism including first and second support plates. The first support plate has first and second edges parallel to the longitudinal axis for respectively abutting against the base plate and the cap. The second support plate has third and fourth edges parallel to the longitudinal axis for respectively abutting against the base plate and the cap. The base plate is disposed through openings of the first and second support plates to make the first and second support plates movably connected to the base plate. The returning device drives the cap to a non-pressed position with rotation of the first and second support plates. The support mechanism has first and second support members pivoted to each other to be movably connected to the cap and the base plate.