Abstract: A connector includes a body and a contact that is inserted into the body. The contact includes a protruding part that is protruded in a direction orthogonal to an insertion direction of the contact, a protrusion that is provided on an outer periphery of the contact, and an overhanging part that overhangs in the direction orthogonal to the insertion direction. The body includes, on an inner surface thereof, a guide groove that is fitted with the protruding part and is extended in the insertion direction, a housing part that has an internal dimension for press-fitting the contact, which includes the protrusion, thereto, and a press-fitting part that has an internal dimension for press-fitting the contact, which includes the overhanging part, thereto. An insertion distance A of the protruding part, an insertion distance B of the protrusion, and an insertion distance C of the overhanging part satisfy a relation A>B>C.

Abstract: A connector including a shield case, a body housed in the shield case, at least one terminal held by the body, and a shield cover. The shield case includes a tube extending in a first direction and a pair of walls. The walls are located on one side in the first direction relative to the tube, face each other in a second direction orthogonal to the first direction, and extend to one side in a third direction. The third direction crosses the first and second directions. The body includes a first portion in the tube, and a second portion. The first portion includes a basal portion, which includes an exposed portion exposed to one side in the third direction between the walls. The second portion extends between the walls from the basal portion. The shield cover includes a cover portion disposed between the walls to cover at least part of the exposed portion.

Abstract: A connector includes a body and a contact that is inserted into the body. The contact includes a protruding part that is protruded in a direction orthogonal to an insertion direction of the contact, a protrusion that is provided on an outer periphery of the contact, and an overhanging part that overhangs in the direction orthogonal to the insertion direction. The body includes, on an inner surface thereof, a guide groove that is fitted with the protruding part and is extended in the insertion direction, a housing part that has an internal dimension for press-fitting the contact, which includes the protrusion, thereto, and a press-fitting part that has an internal dimension for press-fitting the contact, which includes the overhanging part, thereto. An insertion distance A of the protruding part, an insertion distance B of the protrusion, and an insertion distance C of the overhanging part satisfy a relation A>B>C.

Abstract: A connector including a shield case, a body housed in the shield case, at least one terminal held by the body, and a shield cover. The shield case includes a tube extending in a first direction and a pair of walls. The walls are located on one side in the first direction relative to the tube, face each other in a second direction orthogonal to the first direction, and extend to one side in a third direction. The third direction crosses the first and second directions. The body includes a first portion in the tube, and a second portion. The first portion includes a basal portion, which includes an exposed portion exposed to one side in the third direction between the walls. The second portion extends between the walls from the basal portion. The shield cover includes a cover portion disposed between the walls to cover at least part of the exposed portion.

Abstract: A waterproof connector has a cable in which metal terminals are connected to the tip end, a housing that houses the metal terminals and a part of the cable, a packing in which a cable through hole that is passed to the front and rear sides is disposed, which is incorporated in the housing in a state where the packing is passed over the cable, and which ensures a watertightness between the cable and the housing, and a stopper in which a cable through hole that is passed to the front and rear sides is disposed, which is incorporated in the housing on a side of the packing opposite to the side of the metal terminals, in a state where the stopper is passed over the cable, and which holds the packing to the housing in a slipping-off preventing state.

Abstract: A downstream-side passage of an expansion valve includes a small-diameter part to which a valve hole and an insertion hole are open, and a large-diameter part to which a pipe leading to an evaporator is connected. A plate has a shield part partially covering a downstream end of the small-diameter part. The shield part has a height of 2 mm or larger in a radial direction of the small-diameter part from a projected position of an opening of the insertion hole at the downstream end of the small-diameter part, and a width equal to or larger than a radius of the shaft within a range of the height. The plate is provided so that the shield part does not cover at least a range of projection of an opening of the valve hole at the downstream end of the small-diameter part.

Abstract: A female connector includes a main body, a base, and a lock arm. The main body includes a connection hole for receiving a male connector, and a slot communicating with the hole. The base is located on the removing direction side relative to the slot. The lock arm includes a first arm with a free end, extending in the receiving direction from the base inside the slot, a middle portion extending from the free end away from the hole, a second arm spaced from the first arm, extending from the middle portion in the removing direction, and a lock projection extending from the free end into the hole for fitting in a lock hole of the male connector or abutting a protrusion of the male connector from the removing direction side. At least the first and second arms and the middle portion can be compressed between the base, and an edge of the lock hole or the protrusion as applying load on the projection.

Abstract: A female connector includes a main body, a base, and a lock arm. The main body includes a connection hole for receiving a male connector, and a slot communicating with the hole. The base is located on the removing direction side relative to the slot. The lock arm includes a first arm with a free end, extending in the receiving direction from the base inside the slot, a middle portion extending from the free end away from the hole, a second arm spaced from the first arm, extending from the middle portion in the removing direction, and a lock projection extending from the free end into the hole for fitting in a lock hole of the male connector or abutting a protrusion of the male connector from the removing direction side. At least the first and second arms and the middle portion can be compressed between the base, and an edge of the lock hole or the protrusion as applying load on the projection.

Abstract: Provided is a laser beam welding apparatus capable of correctly detecting the beginning and the end of one welding point even in remote laser beam welding. The laser beam welding apparatus includes a head which irradiates a workpiece with a laser beam, an optical receiver which receives a reflected light of the laser beam from the workpiece, and a controller. The optical receiver receives only a laser beam and a plasma of the reflected light. The controller determines that one welding point begins when a time during which intensity of the reflected light is larger than or equal to a second set-intensity is longer than or equal to a first set-time, and determines that the one welding point ends when a time during which the intensity of the reflected light is smaller than or equal to a first set-intensity is longer than or equal to a second set-time.

Abstract: A welded portion inspection method accurately identifies emitted light from a molten portion during inspection laser light irradiation, enabling reliable inspection. When transitioning from welding laser light irradiation to inspection laser light irradiation, the welding laser light irradiation is interrupted and then the welding laser light is switched to the inspection laser light. In inspecting a welded portion, two points in time at which the emitted light intensity is equal to or less than a certain threshold value are extracted from an intensity waveform of the emitted light as an inspection start point in time and an inspection end point in time. The interval between the inspection start and end points is estimated as being a irradiation period of the inspection laser light. The welded state is inspected based on the intensity waveform of the emitted light in the irradiation period.

Abstract: A waterproof connector has a cable in which metal terminals are connected to the tip end, a housing that houses the metal terminals and a part of the cable, a packing in which a cable through hole that is passed to the front and rear sides is disposed, which is incorporated in the housing in a state where the packing is passed over the cable, and which ensures a watertightness between the cable and the housing, and a stopper in which a cable through hole that is passed to the front and rear sides is disposed, which is incorporated in the housing on a side of the packing opposite to the side of the metal terminals, in a state where the stopper is passed over the cable, and which holds the packing to the housing in a slipping-off preventing state.

Abstract: A downstream-side passage of an expansion valve includes a small-diameter part to which a valve hole and an insertion hole are open, and a large-diameter part to which a pipe leading to an evaporator is connected. A plate has a shield part partially covering a downstream end of the small-diameter part. The shield part has a height of 2 mm or larger in a radial direction of the small-diameter part from a projected position of an opening of the insertion hole at the downstream end of the small-diameter part, and a width equal to or larger than a radius of the shaft within a range of the height. The plate is provided so that the shield part does not cover at least a range of projection of an opening of the valve hole at the downstream end of the small-diameter part.

Abstract: Provided is a laser welding inspection apparatus capable of improving the accuracy for determining the welding defect. The laser welding inspection apparatus includes a head which irradiates a welded portion of a workpiece with a laser beam for inspection, an optical receiver which receives a return light of the laser beam for inspection from the welded portion, an optical system which adjusts at least a focal diameter of the laser beam for inspection applied to the welded portion and a region where the return light from the welded portion is recognized, and a controller which controls the optical system and determines, based on intensity of the return light, whether a welding defect exists in the welded portion. The controller controls the optical system so that a diameter of the region is not more than 1.5 times as large as the focal diameter.

Abstract: A connector has a shielding structure configured by: a shield shell, which has in the front end a tubular shielding portion that surrounds, accommodates, and fixes a resin housing, in the rear end, a barrel portion that crimps and fixes a sheath of a cable, and, between the shielding portion and the barrel portion, an opening portion that is upwardly opened; and a shield cover, which is attached from the upper side to the opening portion of the shield shell. Stoppers that limit rearward movement of the resin housing by causing a plate surface to be butted against a rear end surface of the resin housing that is fixed at the normal position in the shielding portion are disposed in the shield cover.

Abstract: A welding laser beam (L1) is radiated along welding loci (C11, C12) set in workpieces (W1, W2), or an inspection laser beam (L5) is radiated along scanning loci (C51, C52) set in a molten pool (Y1) of the workpieces that are molten by radiation of the welding laser beam, a returned light beam (L2) including reflection light from the molten pool, vapor light caused due to melting and evaporation of the workpieces, and thermal radiation light emitted from the molten pool is received, and a welding state of a welded portion of the workpieces is inspected based on an intensity of a returned light beam received in a first region inside the molten pool which is relatively close to a given point and an intensity of a returned light beam received in a second region inside the molten pool which is relatively spaced from the given point.

Abstract: A welding laser beam (L1) is radiated along welding loci (C11, C12) set in workpieces (W1, W2), or an inspection laser beam (L5) is radiated along scanning loci (C51, C52) set in a molten pool (Y1) of the workpieces (W1, W2) that are molten by radiation of the welding laser beam (L1), a returned light beam (L2) including reflection light from the molten pool (Y1) of the workpieces, vapor light caused due to melting and evaporation of the workpieces, and thermal radiation light emitted from the molten pool (Y1) of the workpieces is received, and a welding state of a welded portion of the workpieces is inspected based on an intensity change of the returned light beam (L2) thus received.

Abstract: A connector has a shielding structure configured by: a shield shell, which has in the front end a tubular shielding portion that surrounds, accommodates, and fixes a resin housing, in the rear end, a barrel portion that crimps and fixes a sheath of a cable, and, between the shielding portion and the barrel portion, an opening portion that is upwardly opened; and a shield cover, which is attached from the upper side to the opening portion of the shield shell. Stoppers that limit rearward movement of the resin housing by causing a plate surface to be butted against a rear end surface of the resin housing that is fixed at the normal position in the shielding portion are disposed in the shield cover.

Abstract: A welding laser beam (L1) is radiated along welding loci (C11, C12) set in workpieces (W1, W2), or an inspection laser beam (L5) is radiated along scanning loci (C51, C52) set in a molten pool (Y1) of the workpieces (W1, W2) that are molten by radiation of the welding laser beam (L1), a returned light beam (L2) including reflection light from the molten pool (Y1) of the workpieces, vapor light caused due to melting and evaporation of the workpieces, and thermal radiation light emitted from the molten pool (Y1) of the workpieces is received, and a welding state of a welded portion of the workpieces is inspected based on an intensity change of the returned light beam (L2) thus received.

Abstract: A welding laser beam (L1) is radiated along welding loci (C11, C12) set in workpieces (W1, W2), or an inspection laser beam (L5) is radiated along scanning loci (C51, C52) set in a molten pool (Y1) of the workpieces that are molten by radiation of the welding laser beam, a returned light beam (L2) including reflection light from the molten pool, vapor light caused due to melting and evaporation of the workpieces, and thermal radiation light emitted from the molten pool is received, and a welding state of a welded portion of the workpieces is inspected based on an intensity of a returned light beam received in a first region inside the molten pool which is relatively close to a given point and an intensity of a returned light beam received in a second region inside the molten pool which is relatively spaced from the given point.