A heat exchanger includes multiple aluminum heat transfer tubes through which a heat medium flows, and multiple aluminum connection pipes brazed to end portions of the heat transfer tubes. A heat equalizing member formed of a heat conductor is disposed to be in contact with at least two of the connection pipes and be capable of transferring heat therebetween. A method for producing the heat exchanger includes brazing the heat transfer tubes to the connection pipes in a state where the heat equalizing member is in contact with the at least two of the connection pipes.

A bonding structure of dissimilar metal members, including a first metal member, a second metal member, and a brazing filler metal, wherein the brazing filler metal bonds a bonding end surface of the first metal member and a bonding end surface of the second metal member, and any one or both of the following conditions (1) and (2) are satisfied: (1) at least a part of the bonding end surface of the first metal member in a thickness direction of the first metal member is an inclined surface inclined with respect to a plane perpendicular to the thickness direction of the first metal member, and (2) at least a part of the bonding end surface of the second metal member in a thickness direction of the second metal member is an inclined surface inclined with respect to a plane perpendicular to the thickness direction of the second metal member.

A bonding structure of dissimilar metal members, including a first metal member, a second metal member, and a brazing filler metal, wherein the brazing filler metal bonds a bonding end surface of the first metal member and a bonding end surface of the second metal member, and any one or both of the following conditions (1) and (2) are satisfied: (1) at least a part of the bonding end surface of the first metal member in a thickness direction of the first metal member is an inclined surface inclined with respect to a plane perpendicular to the thickness direction of the first metal member, and (2) at least a part of the bonding end surface of the second metal member in a thickness direction of the second metal member is an inclined surface inclined with respect to a plane perpendicular to the thickness direction of the second metal member.

It is an object of the present invention to provide a joined component in which the overflow of brazing filler metal from the outer peripheral line of a joint boundary surface between a first member and a second member is suppressed, and a method for manufacturing the joined component. A joined component is obtained by joining, with brazing filler metal, a first member and a second member to each other at a joint boundary surface where the first member and the second member are in contact with each other, the joined component having a non-contact area that is provided on an inner side with respect to an outer peripheral line of the joint boundary surface and in which the first member and the second member are not in contact with each other. In the joined component, the first member has a retaining recess where the brazing filler metal that is melted when the first member and the second member are joined to each other is retained, the retaining recess providing the non-contact area. The molten brazing filler metal including some solidified part forms a brazing-filler-metal pool in the retaining recess.

It is an object of the present invention to provide a joined component in which the overflow of brazing filler metal from the outer peripheral line of a joint boundary surface between a first member and a second member is suppressed, and a method for manufacturing the joined component. A joined component is obtained by joining, with brazing filler metal, a first member and a second member to each other at a joint boundary surface where the first member and the second member are in contact with each other, the joined component having a non-contact area that is provided on an inner side with respect to an outer peripheral line of the joint boundary surface and in which the first member and the second member are not in contact with each other. In the joined component, the first member has a retaining recess where the brazing filler metal that is melted when the first member and the second member are joined to each other is retained, the retaining recess providing the non-contact area. The molten brazing filler metal including some solidified part forms a brazing-filler-metal pool in the retaining recess.

A joining device for producing an exhaust gas system for an internal combustion engine comprises a device base, a frame, and at least two joining units that can be operated simultaneously are fastened to the frame. The frame extends essentially vertically starting from the device base. In a method for producing the exhaust gas system, at least one joining unit of a joining device is oriented to a geometry of the exhaust gas system that is to be produced, at least three components or assemblies of the exhaust gas system are positioned in the joining device, and the components or assemblies are simultaneously connected.

A ceramic-metal structure in which a metallic body (2) is inserted into or disposed above a through hole (4h) of a ceramic substrate (4) and which includes an annular pad layer (6) disposed around the through hole; an annular ring member (8) joined to the pad layer via a first brazing filler portion (10) and having a coefficient of thermal expansion smaller than that of the metallic body; a second brazing filler portion (12) intervening between the ring member and metallic body; and brazing filler flow prevention layers (7a, 7b) covering an outer surface of the pad layer so as to expose a central region (6c) of the outer surface of the pad layer facing the first brazing filler portion. The first brazing filler portion joins the central region and the ring member without projecting to a radially inner or outer side of the flow prevention layers.

A ceramic-metal structure in which a metallic body (2) is inserted into or disposed above a through hole (4h) of a ceramic substrate (4) and which includes an annular pad layer (6) disposed around the through hole; an annular ring member (8) joined to the pad layer via a first brazing filler portion (10) and having a coefficient of thermal expansion smaller than that of the metallic body; a second brazing filler portion (12) intervening between the ring member and metallic body; and brazing filler flow prevention layers (7a, 7b) covering an outer surface of the pad layer so as to expose a central region (6c) of the outer surface of the pad layer facing the first brazing filler portion. The first brazing filler portion joins the central region and the ring member without projecting to a radially inner or outer side of the flow prevention layers.

A motor includes a stationary structure, and a rotor rotatable about a central axis with respect to the stationary structure. The stationary structure includes a stator including a coil, a bracket that supports the stator, and a circuit board disposed between the stator and the bracket. The bracket includes a board support that holds the circuit board between the bracket and the stator in an axial direction. The board support includes a wiring through hole that penetrates the board support in the axial direction and through which a wire extending from the circuit board passes, a lid that partially covers the wiring through hole, and a guide bridge that is located inside the wiring through hole when viewed in the axial direction and holds the wire between the lid and the guide bridge.

A motor includes a stationary structure, and a rotor rotatable about a central axis with respect to the stationary structure. The stationary structure includes a stator including a coil, a bracket that supports the stator, and a circuit board disposed between the stator and the bracket. The bracket includes a board support that holds the circuit board between the bracket and the stator in an axial direction. The board support includes a wiring through hole that penetrates the board support in the axial direction and through which a wire extending from the circuit board passes, a lid that partially covers the wiring through hole, and a guide bridge that is located inside the wiring through hole when viewed in the axial direction and holds the wire between the lid and the guide bridge.