A trailer break-away switch comprises an electromechanical means to energize a towed trailer brake in the event of unintended decoupling of the trailer from the towing vehicle. When in normal operation, the trailer break-away switch operates as a normally open switch between the stored energy source (the battery) on the trailer and the trailer brake system. In the event of unintended decoupling of the trailer from the towing vehicle, a pin is pulled from the trailer break-away switch, which activates the switch. Activating the switch allows electrical power to be connected to the trailer brake system. In some cases, the switch directly connects a trailer battery to the electromagnetic coils of the electric brakes.

An electric device includes an electric component and a housing having a lower housing part and an upper housing part. The electric component is supported on the lower housing part. The lower housing part and the upper housing part surround a housing volume in which the electric component is sealingly encased. A weld is formed between the upper housing part and the lower housing part. One of the lower housing part and the upper housing part has a protrusion welded to the other one of the lower housing part and the upper housing part. A gap is disposed between the lower housing part and the upper housing part, the gap extending radially from the protrusion to an outside of the housing. A solidified molten material from the weld is at least partially received in the gap.

An electric device includes an electric component and a housing having a lower housing part and an upper housing part. The electric component is supported on the lower housing part. The lower housing part and the upper housing part surround a housing volume in which the electric component is sealingly encased. A weld is formed between the upper housing part and the lower housing part. One of the lower housing part and the upper housing part has a protrusion welded to the other one of the lower housing part and the upper housing part. A gap is disposed between the lower housing part and the upper housing part, the gap extending radially from the protrusion to an outside of the housing. A solidified molten material from the weld is at least partially received in the gap.

A relay device includes an electronic block configured to selectively generate an electromagnetic force by means of a coil; two fixed contact point terminals at which fixed contact points are respectively installed; a movable contact point assembly having a movable contact point installed at a front end thereof, the movable contact point being fluctuated by the electromagnetic force to be contacted with or separated from the fixed contact points; and a base block configured to hold the electronic block, the fixed contact point terminals and the movable contact point assembly, which are accommodated in a cover. An entire space inside the cover is divided into two regions based on a contact surface between the fixed contact point and the fixed contact point terminal.

A relay device includes an electronic block configured to selectively generate an electromagnetic force by means of a coil; two fixed contact point terminals at which fixed contact points are respectively installed; a movable contact point assembly having a movable contact point installed at a front end thereof, the movable contact point being fluctuated by the electromagnetic force to be contacted with or separated from the fixed contact points; and a base block configured to hold the electronic block, the fixed contact point terminals and the movable contact point assembly, which are accommodated in a cover. An entire space inside the cover is divided into two regions based on a contact surface between the fixed contact point and the fixed contact point terminal.

The disclosure relates to a relay, a battery distribution box and a battery pack. The relay includes a relay body and a buffer assembly. The relay body includes a housing and a stationary contact, a movable contact and a coil assembly located inside the housing. The coil assembly is abler to drive the movable contact to move toward or away from the stationary contact to make the movable contact to contact or disconnect from the stationary contact. The housing is fixed through the base, the buffer assembly is mounted on the base, and/or is mounted on the outside of the housing, and configured to buffer the force generated by the action of the movable contact.

A micro-electromechanical system (MEMS) device includes a moveable element within a cavity. The MEMS device also includes a first layer over the cavity, the first layer having a first hole and a second hole. The first hole has a first diameter. The second hole has a second diameter. The second diameter is larger than the first diameter, and the second hole is farther from the moveable element than the first hole. The first hole is sealed with a first dielectric material. The second hole is sealed with a second dielectric material. The cavity filled with a gas at a pressure of at least approximately 10 torr.

A micro-electromechanical system (MEMS) device includes a moveable element within a cavity. The MEMS device also includes a first layer over the cavity, the first layer having a first hole and a second hole. The first hole has a first diameter. The second hole has a second diameter. The second diameter is larger than the first diameter, and the second hole is farther from the moveable element than the first hole. The first hole is sealed with a first dielectric material. The second hole is sealed with a second dielectric material. The cavity filled with a gas at a pressure of at least approximately 10 torr.

The present invention relates to an electrically operated switch, and particularly to an electrically operated switch for long-term use comprising a first electrically conductive heat-dissipating fin, a second electrically conductive heat-dissipating fin, and a plurality of relays. All the input terminals on the plurality of relays are interconnected through the first electrically conductive heat-dissipating fin, and all the output terminals on the plurality of relays are interconnected through the second electrically conductive heat-dissipating fin. In the present invention, the plurality of relays is interconnected through a first electrically conductive heat-dissipating fin and a second electrically conductive heat-dissipating fin. The first electrically conductive heat-dissipating fin and the second electrically conductive heat-dissipating fin may not only perform electrical conduction but may also speedily dissipate heat from the contacts on the plurality of relays to allow the plurality of relays to operate under long-term high current flow without getting burned.

The present invention relates to an electrically operated switch, and particularly to an electrically operated switch for long-term use comprising a first electrically conductive heat-dissipating fin, a second electrically conductive heat-dissipating fin, and a plurality of relays. All the input terminals on the plurality of relays are interconnected through the first electrically conductive heat-dissipating fin, and all the output terminals on the plurality of relays are interconnected through the second electrically conductive heat-dissipating fin. In the present invention, the plurality of relays is interconnected through a first electrically conductive heat-dissipating fin and a second electrically conductive heat-dissipating fin. The first electrically conductive heat-dissipating fin and the second electrically conductive heat-dissipating fin may not only perform electrical conduction but may also speedily dissipate heat from the contacts on the plurality of relays to allow the plurality of relays to operate under long-term high current flow without getting burned.