Abstract: A plate heat exchanger realizing improved heat exchange performance by increasing the fluidity of fluids and by promoting turbulence of the fluids, including: heat exchange elements stacked by being laid one on top of another and individually formed by assembling upper and lower plates, with an internal flow channel defined in each of the heat exchange elements and an external flow channel defined between the heat exchange elements, the internal and external flow channels allowing internal and external fluids to pass therethrough, respectively, wherein the upper and lower plates are provided with respective wave patterns having ridges and valleys, each of the heat exchange elements has an inlet port and an outlet port, the upper and lower plates respectively have an upper flange and a lower flange which are assembled with each other through fitting, and first and second flat parts are formed around the upper and lower flanges.

Abstract: A constant-velocity joint assembly includes: a first and a second shaft portions respectively provided with a protrusion; a double yoke portion in which a guide hole is formed along an axis direction, the first and the second shaft portions being respectively rotatably connected to both sides of the guide hole with an axis of an upper/lower direction; and a guide portion which is disposed to the guide hole to guide the protrusion and rotates along an inner circumference of the guide hole during rotation of the shaft portions, wherein the first and the second shaft portions respectively comprises: a spider body, a left and a right leg, and an upper and a lower legs; a shaft provided with the protrusion; and a yoke block comprising a block body, and a left and a right connecting member.

Abstract: A rack bar supporting device is a device for supporting a rack bar of a steering apparatus of a vehicle toward a pinion shaft and includes a rack bearing and a biasing assembly. The biasing assembly includes an adjustment plug, an adjustment assembly and a support plate assembly. The adjustment assembly includes an adjustment member and a first biasing member. The support plate assembly includes a first support plate, a second support plate, a second biasing member which provides a force for pushing the first support plate along the biasing axis against the second support plate, and a connection structure which connects the first and the second support plates together so as to restrict movement of the second plate in a direction away from the rack bearing.

Abstract: A rack bar support device supports a rack bar of a steering device of a vehicle toward a pinion shaft, and includes a rack bearing which is disposed opposite the pinion to contact the rack bar and a biasing assembly providing a force of pushing the rack bearing along a biasing axis toward the rack bar to urge the rack bearing to push the rack bar is engaged with the pinion shaft. The biasing assembly includes an adjustment plug, an adjustment assembly and a support plate assembly. The support plate assembly includes a support plate which is movably disposed between the adjustment member and the rack bearing in a state of being supported by the adjustment member, and a gap is formed between the support plate and the rack bearing.

Abstract: A constant-velocity joint assembly includes: a first and a second shaft portions respectively provided with a protrusion; a double yoke portion in which a guide hole is formed along an axis direction, the first and the second shaft portions being respectively rotatably connected to both sides of the guide hole with an axis of an upper/lower direction; and a guide portion which is disposed to the guide hole to guide the protrusion and rotates along an inner circumference of the guide hole during rotation of the shaft portions, wherein the first and the second shaft portions respectively comprises: a spider body, a left and a right leg, and an upper and a lower legs; a shaft provided with the protrusion; and a yoke block comprising a block body, and a left and a right connecting member.

Abstract: Disclosed herein is a master cylinder for a vehicle. The master cylinder includes a housing, a piston, inlet ports and a seal. The housing has therein a liquid pressure chamber to contain oil. The piston reciprocates in the liquid pressure chamber to control the pressure in the liquid pressure chamber. A front end of the piston has a stepped structure. The inlet ports are provided in the housing so that oil is supplied into the liquid pressure chamber through the inlet ports. The seal is seated into a seating depression which is formed in the inner surface of the housing. The seal opens or closes a flow path of the oil depending on whether the seal is brought into contact with the piston. The oil flows into the liquid pressure chamber along the stepped outer surface of the piston through a space defined between the piston and the seal.

Abstract: A plate heat exchanger realizing improved heat exchange performance by increasing the fluidity of fluids and by promoting turbulence of the fluids, including: heat exchange elements stacked by being laid one on top of another and individually formed by assembling upper and lower plates, with an internal flow channel defined in each of the heat exchange elements and an external flow channel defined between the heat exchange elements, the internal and external flow channels allowing internal and external fluids to pass therethrough, respectively, wherein the upper and lower plates are provided with respective wave patterns having ridges and valleys, each of the heat exchange elements has an inlet port and an outlet port, the upper and lower plates respectively have an upper flange and a lower flange which are assembled with each other through fitting, and first and second flat parts are formed around the upper and lower flanges.

Abstract: Disclosed herein is a blower motor assembly for a vehicle. The blower motor assembly comprises an armature assembly, a motor body, a magnet, an upper case, and a lower case. The armature assembly comprises a rotatable armature shaft with an armature. The motor body is an open cylinder that houses the armature assembly. The magnet is installed between the motor body and the armature assembly. The upper case has a through-hole which permits the armature shaft to projects outward through. The lower case is coupled to the upper case. The motor body is installed in an internal space defined by the coupled upper and lower cases. The motor body is fixed in a correspondingly-shaped hollow portion defined by a wall of a motor body fixing portion formed in the lower case. The magnet is fixed to a magnet fixing portion formed in the lower case.

Abstract: An internal cooling apparatus for automobiles includes a first expansion valve for spraying a coolant to a main evaporator through a high-pressure pipe, a compressor receiving the coolant evaporated in the main evaporator through a low-pressure pipe, a condenser receiving the coolant compressed in the compressor, and a plurality of sub-evaporators each being installed inside of a seat to contact an automobile passenger. One end of each of the sub-evaporators is communicated with the high-pressure pipe and the other end thereof is communicated with the low-pressure pipe such that part of the coolant sprayed through the first expansion valve is supplied to the compressor via each of the sub-evaporators.

Abstract: A connection structure and a connection method of connecting field coils and lead wires in a vehicle alternator. The connection structure includes a rotor assembly, a rear fan, and a rotor insulator. The rotor assembly includes a rotor shaft, a spool bobbin, and rotor segments. In the connection structure, a soldering or welding process is performed on twisted parts, which are formed by twisting field coils and lead wires around each other, the twisted parts are bent in the guide pockets of the rotor insulator, epoxy is applied to the outer surfaces of the twisted parts and the inner surfaces of guide pockets, and the rear fan is coupled to the front of the rotor insulator so that the inner surfaces of the protrusion hubs of the rear fan are in close contact with the guide pockets of the rotor insulator.

Abstract: Disclosed herein is a master cylinder for a vehicle. The master cylinder includes a housing, a piston, inlet ports and a seal. The housing has therein a liquid pressure chamber to contain oil. The piston reciprocates in the liquid pressure chamber to control the pressure in the liquid pressure chamber. A front end of the piston has a stepped structure. The inlet ports are provided in the housing so that oil is supplied into the liquid pressure chamber through the inlet ports. The seal is seated into a seating depression which is formed in the inner surface of the housing. The seal opens or closes a flow path of the oil depending on whether the seal is brought into contact with the piston. The oil flows into the liquid pressure chamber along the stepped outer surface of the piston through a space defined between the piston and the seal.

Abstract: There are provided an automobile heat exchanger having a header formed integrally with a tank and a method of manufacturing the same, and, more particularly, an automobile heat exchanger comprising a top header pipe unit formed of a pair of header pipes and a bottom header pipe unit formed of a pair of header pipes, the top header pipe unit to be connected to top ends of tubes and the bottom header pipe unit to be connected to bottom ends thereof, and the header pipe including a header formed integrally with a tank. In the heat exchanger, each header pipe is manufactured in a welded type or folded type so that the header is formed integrally with the tank. Accordingly, unlike a conventional heat exchanger, the present invention does not require any separate metal mold or assembling means for assembling the header and tank. Consequently, the manufacturing cost is reduced and the manufacturing time is shortened by simplifying the processes.

Abstract: A method of manufacturing a terminal assembly of an alternator for vehicles and the terminal assembly manufactured by the method. The terminal assembly manufacturing method of the present invention includes a first step of notching and piercing a blank plate, a second step of deep-drawing notched portions of the plate to form a plurality of assembly protrusions, each of which has a pierced cylindrical shape protruding from the plate, a third step of trimming and piercing the plate to give it a predetermined shape, and a fourth step of coining and bending the plate, thus forming the terminal assembly.

Abstract: An internal cooling apparatus for automobiles includes a first expansion valve for spraying a coolant to a main evaporator through a high-pressure pipe, a compressor receiving the coolant evaporated in the main evaporator through a low-pressure pipe, a condenser receiving the coolant compressed in the compressor, and a plurality of sub-evaporators each being installed inside of a seat to contact an automobile passenger. One end of each of the sub-evaporators is communicated with the high-pressure pipe and the other end thereof is communicated with the low-pressure pipe such that part of the coolant sprayed through the first expansion valve is supplied to the compressor via each of the sub-evaporators.

Abstract: Disclosed herein is a blower motor assembly for a vehicle. The blower motor assembly comprises an armature assembly, a motor body, a magnet, an upper case, and a lower case. The armature assembly comprises a rotatable armature shaft with an armature. The motor body is an open cylinder that houses the armature assembly. The magnet is installed between the motor body and the armature assembly. The upper case has a through-hole which permits the armature shaft to projects outward through. The lower case is coupled to the upper case. The motor body is installed in an internal space defined by the coupled upper and lower cases. The motor body is fixed in a correspondingly-shaped hollow portion defined by a wall of a motor body fixing portion formed in the lower case. The magnet is fixed to a magnet fixing portion formed in the lower case.

Abstract: A connection structure and a connection method of connecting field coils and lead wires in a vehicle alternator. The connection structure includes a rotor assembly, a rear fan, and a rotor insulator. The rotor assembly includes a rotor shaft, a spool bobbin, and rotor segments. In the connection structure, a soldering or welding process is performed on twisted parts, which are formed by twisting field coils and lead wires around each other, the twisted parts are bent in the guide pockets of the rotor insulator, epoxy is applied to the outer surfaces of the twisted parts and the inner surfaces of guide pockets, and the rear fan is coupled to the front of the rotor insulator so that the inner surfaces of the protrusion hubs of the rear fan are in close contact with the guide pockets of the rotor insulator.

Abstract: Disclosed is a brush assembly of an alternator for a vehicle including a brush holder including a hollow brush holder body, and wired brushes each received in the brush holder, and adapted to be urged against a slip ring fitted around a rotor shaft by a spring along an axis of the slip ring, thereby coming into elastic contact with the slip ring to obtain an electrical connection to an external electrical device, each of the wired brushes consisting of a brush, and a lead wire electrically connected to the brush. The brush holder body of the brush holder has brush channels each adapted to receive the brush of an associated one of the wired brushes, and wire channels each arranged at one side of an associated one of the brush channels while extending longitudinally in parallel to the associated brush channel and communicating with the associated brush channel.