Abstract: A liquid discharge head includes: a first substrate having a joint region; a sheet member having a first face joined to the first substrate with a joining agent applied to the joint region of the first substrate; and a second substrate joined to a second face opposite to the first face of the sheet member and the first substrate, the sheet member interposed between the first substrate and the second substrate, wherein the second substrate has a gap facing the second face of the sheet member opposite to a portion of the first face of the sheet member joined to the joint region of the first substrate across the sheet member.

Abstract: An ammonia manufacturing apparatus includes: an ammonia synthesis unit synthesizing ammonia under a chemical reaction using hydrogen and nitrogen as a raw material gas in a reactor; and a heat storage unit including a heating medium. The heat storage unit can supply heat from the heating medium to the ammonia synthesis unit when an amount of the raw material gas supplied to the ammonia synthesis unit increases.

Abstract: A DC circuit switching apparatus is connected between an automobile battery and a motor-side circuit and cuts off current that flows in two directions. The DC circuit switching apparatus includes a breaker that cuts off current, a first voltage holding circuit, which is constituted by a first diode and a first capacitor that are connected in series, that is provided in parallel to the breaker and is configured to allow power supply from the automobile battery to the motor-side circuit, and a second voltage holding circuit, which is constituted by a second diode and a second capacitor that are connected in series, that is provided in parallel to the breaker and is configured to allow power supply from the motor-side circuit to the automobile battery.

Abstract: A liquid discharge head includes: a nozzle plate including a nozzle; a liquid chamber substrate having an individual chamber; a diaphragm; a piezoelectric actuator including a piezoelectric body, a wiring portion covering a first region of the piezoelectric actuator; and a protective film covering a second region of the piezoelectric actuator other than the first region. A first outer periphery of the piezoelectric body in the second region is interior of a second outer periphery of the individual chamber in the second region. A gap region between the first outer periphery and the second outer periphery has: a first gap region having a first width in the longitudinal direction; and a second gap region having a second width in a transverse direction orthogonal to the longitudinal direction, the second width larger than the first width. The protective film covers a part of the first gap region in the second region.

Abstract: A first busbar includes a first electrical connection portion that is electrically connected to a main relay, a first heat transfer connection portion that is thermally connected to the insulating plate, and a first detour portion that connects the first electrical connection portion and the first heat transfer connection portion to each other. A second busbar includes a second electrical connection portion that is electrically connected to the main relay, a second heat transfer connection portion that is thermally connected to the insulating plate, and a lateral detour portion and a lower detour portion that connect the second electrical connection portion and the second heat transfer connection portion to each other.

Abstract: A circuit structure with a novel structure is disclosed in which a measure against arcs can be implemented with a simple structure and a reduction in size and cost can be realized. A circuit structure including: a power supply line configured to connect a battery and a load; a main relay connected to the power supply line; a pre-charge circuit including a pre-charge resistor and a pre-charge relay connected in series, and connected in parallel to the main relay; and a sub relay connected in parallel to the pre-charge resistor.

Abstract: A power distribution module including: a power line connecting between a battery and a load; a main relay connected to the power line; an active fuse connected to the power line on the battery side relative to the main relay; a first voltage converter connected to the power line on the load side relative to the main relay; an abnormality detection unit configured to detect an abnormality of the power line; and a first driving/control wiring extending from the first voltage converter and connected to the active fuse, wherein a first control unit mounted on the first voltage converter transmits a control signal for disconnecting the active fuse when the abnormality detection unit detects an abnormality of the power line, and the active fuse is disconnected.

Abstract: Provided is a relay connector including a relay terminal including a first connection portion configured to connect to a first device side terminal and a second connection portion configured to connect to a second device side terminal; a clamping member including a first clamping portion configured to clamp the first device side terminal together with the first connection portion and a second clamping portion configured to clamp the second device side terminal together with the second connection portion; a lower case configured to hold the relay terminal; and an upper case configured to hold the clamping member, wherein a connector case includes a first insertion opening and a second insertion opening; and guide portions are formed on the clamping member, the guide portions guiding the first device side terminal inserted from the first insertion opening and the second device side terminal inserted from the second insertion opening.

Abstract: A liquid discharge head includes: a first member; and a second member bonded to the first member, wherein the first member has: a first protrusion protruding to the second member, a second protrusion protruding to the second member, the second protrusion having a height different from the first protrusion, the second member includes: a first portion bonded to the first protrusion with a first adhesive; and a second portion bonded to the second protrusion with a second adhesive, the second portion having a height different from the first portion, and a type of the second adhesive is different from a type of the first adhesive.

Abstract: Provided is a circuit structure with a new structure that can improve a heat dissipation efficiency of a heat generating component while having resistance to a reaction force of a thermally conductive member. Provided is a circuit structure including: a heat generating component; bus bars that are connected to connection portions of the heat-generating component; cases that accommodate the heat-generating component and the bus bars; an elastic thermally conductive member that comes into thermal contact with the bus bars; a pressing portion that is provided on the cases and brings the bus bars into contact with the thermally conductive member; and a reinforcing wall portion that protrudes outside of the cases and reinforces the pressing portion.

Abstract: Disclosed is a circuit assembly having a novel structure capable of more reliably promoting heat dissipation from a heat generating component, using a short heat transfer path. A circuit assembly includes: a heat generating component that generates heat when energized; a conductive member configured to be connected to a connection portion of the heat generating component; and a cooling component configured to allow a coolant to flow therethrough and is in thermal contact with the conductive member.

Abstract: An electrical connection box 10 of the present disclosure includes a case; a power supply circuit; and a branch circuit, wherein the branch circuit is a circuit that includes a detachable overcurrent protection element and branches from the power supply circuit; the case includes a case body, a cover 23 detachably attached to the case body, and a cover sealing member 24 having elasticity; the case body includes a first working hole 44 and houses the power supply circuit and the branch circuit; the first working hole 44 is formed at a position that allows the overcurrent protection element to face outward and is formed with external shape dimensions smaller than external shape dimensions of a ceiling plate 41; the cover 23 is installed on the case body in a manner such that the first working hole 44 is closed; and the cover sealing member 24 is brought into close contact with a peripheral edge portion of the first working hole 44 of the case body and the cover 23.

Abstract: A circuit structure of the present disclosure includes: a heat-generating member; at least one connection conductor; at least one insulative heat transfer member; and an insulative base member. The heat-generating member generates heat as a result of being energized, the connection conductor is connected to the heat-generating member in a heat-transferable state, the heat transfer member is formed in the shape of a heat-transferable sheet, the base member includes a base main body and a positioning portion, the base main body, together with the connection conductor, sandwiches the heat transfer member, and the positioning portion is formed so as to protrude from the base main body, and positions the connection conductor relative to the base main body as a result of coming into contact with the connection conductor.

Abstract: A relay unit includes: bus bars serving as conductive paths; relays including contact portions for turning on and off energization of the bus bars, and a plurality of terminals connected to the contact portions, the bus bars being fixed to the terminals; and heat dissipation members that are fixed to the terminals of the relays, receive heat of the terminals, and dissipate the heat.

Abstract: A conduction path includes: a wire that has a circular cross section and includes a conductive body having an outer periphery covered by an insulating cover; a routing member that includes a routing groove in which the wire is routed; and a cover that is configured to be attached to the routing member and to cover the routing groove, wherein a curved surface having a curvature radius that is larger than the radius of the wire is formed in an inner surface of the routing groove, and in a state in which the cover is attached to the routing member, a distance between the cover and the inner surface of the routing groove in a direction that is perpendicular to an inward surface of the cover is the same length as the diameter of the wire.

Abstract: A first busbar includes a first electrical connection portion that is electrically connected to a main relay, a first heat transfer connection portion that is thermally connected to the insulating plate, and a first detour portion that connects the first electrical connection portion and the first heat transfer connection portion to each other. A second busbar includes a second electrical connection portion that is electrically connected to the main relay , a second heat transfer connection portion that is thermally connected to the insulating plate, and a lateral detour portion and a lower detour portion that connect the second electrical connection portion and the second heat transfer connection portion to each other.

Abstract: The invention provides: an exhaust-gas-purifying metal substrate capable of achieving both low pressure loss and high purification performance; and an exhaust gas purification device using the metal substrate. The invention relates to an exhaust-gas-purifying perforated metal substrate in which a corrugated foil and a flat foil are layered and made into a cylindrical shape, wherein: the perforated metal substrate includes from 50/in2 to 800/in2 of cells; the corrugated foil includes a plurality of first holes having an area that is from 2.0 to 50 times the average opening area of the cells; the flat foil includes a plurality of second holes having an area that is from 3.0 to 100 times the average opening area of the cells; and the average value of the area of the first holes in the corrugated foil is smaller than the average value of the area of the second holes in the flat foil.

Abstract: A conduction path includes: a wire that has a circular cross section and includes a conductive body having an outer periphery covered by an insulating cover; a routing member that includes a routing groove in which the wire is routed; and a cover that is configured to be attached to the routing member and to cover the routing groove, wherein a curved surface having a curvature radius that is larger than the radius of the wire is formed in an inner surface of the routing groove, and in a state in which the cover is attached to the routing member, a distance between the cover and the inner surface of the routing groove in a direction that is perpendicular to an inward surface of the cover is the same length as the diameter of the wire.

Abstract: The heat dissipation of a circuit assembly is improved. A circuit assembly includes: a relay that includes a terminal and generates heat when energized/as a result of energization/due to being energized; a base member to which the relay is attached and in which a through hole is formed; a heat dissipation member that is provided on a side of the base member opposite to a side on which the relay is attached; a first busbar that is connected to the terminal of the relay at a position spaced apart from the base member; and a heat transfer member that is inserted into the through hole so as to be movable in a direction along the axial direction of the through hole, and that comes into contact with the first busbar and the heat dissipation member.

Abstract: Provided is a technique that improves the heat dissipation properties of a wire that is arranged in a conduction path. A conduction path has a wire, a routing member that is made of a metal and has a routing groove in which the wire is routed, a bracket that is made of a metal and has a first mounting portion that is mounted to the routing member and has a second mounting portion that is mounted to an electrical connection box, and a heat transfer member that is made of a synthetic resin having a higher heat conductivity than air and is arranged in the routing groove and interposed between the wire and the routing member, in a region that corresponds to a portion of the routing member to which the first mounting portion is mounted.