An electrically driven dual pump, comprising: a housing comprising suction ports (16, 21) and discharge ports (17, 22) at respective end sections of the housing, the housing having a cylindrical inner circumferential surface and comprising a plurality of coils disposed in a circumferential direction of the housing; a cylindrical outer rotor rotatably disposed with respect to the inner circumferential surface side of the housing and having a plurality of permanent magnets on an outer circumferential surface of the outer rotor to constitute a motor section in cooperation with the coils of the housing; a partitioning plate disposed to partition an inner circumferential side (3b, 3c) of the outer rotor into a first pump chamber of a first pump section and a second pump chamber of a second pump section; a common shaft supported on the housing at a position eccentric to the center of the outer rotor; first inner rotor and second inner rotor, each of the first and second inner rotors (7,8) being rotatably disposed within the first and second pump chambers (4,5) with a rotation center of each of the first and second inner rotors (7,8) eccentric to the center of the outer rotor, constituting a space against the outer rotor which is communicated with a corresponding one of the suction ports (16, 21) and the corresponding one of the discharge ports, and a plurality of slots radially formed on an outer circumferential surface of each of the first and second inner rotors (7,8); and a plurality of linkage plates disposed to transmit a rotational force from the outer rotor to each of the first and second inner rotors (7,8), the respective linkage plates having an outer radial end section swingably supported on an inner circumferential section of the outer rotor and an inner radial end section slidably received in the respective slots of the first and second inner rotors (7,8), the linkage plates dividing the space formed between the outer rotor and each of the first and second inner rotors (7,8) into a plurality of chambers, wherein the outer rotor, the first inner rotor, and the respective linkage plates constitute the first pump section and said outer rotor, the second inner rotor, and the respective linkage plates constitute the second pump section, the partitioning plate is fixed to the outer rotor, the partitioning plate being integrally rotated with the outer rotor, having a circular opening section through which the common shaft is penetrated, and having a diameter with an eccentricity of the shaft to the center of the outer rotor taken into consideration, and the opening section of the partitioning plate is not overlapped on the slots at side surfaces of the first and second inner rotors (7, 8). a housing comprising suction ports (16, 21) and discharge ports (17, 22) at respective end sections of the housing, the housing having a cylindrical inner circumferential surface and comprising a plurality of coils disposed in a circumferential direction of the housing; a cylindrical outer rotor rotatably disposed with respect to the inner circumferential surface side of the housing and having a plurality of permanent magnets on an outer circumferential surface of the outer rotor to constitute a motor section in cooperation with the coils of the housing; a partitioning plate disposed to partition an inner circumferential side (3b, 3c) of the outer rotor into a first pump chamber of a first pump section and a second pump chamber of a second pump section; a common shaft supported on the housing at a position eccentric to the center of the outer rotor; first inner rotor and second inner rotor, each of the first and second inner rotors (7,8) being rotatably disposed within the first and second pump chambers (4,5) with a rotation center of each of the first and second inner rotors (7,8) eccentric to the center of the outer rotor, constituting a space against the outer rotor which is communicated with a corresponding one of the suction ports (16, 21) and the corresponding one of the discharge ports, and a plurality of slots radially formed on an outer circumferential surface of each of the first and second inner rotors (7,8); and a plurality of linkage plates disposed to transmit a rotational force from the outer rotor to each of the first and second inner rotors (7,8), the respective linkage plates having an outer radial end section swingably supported on an inner circumferential section of the outer rotor and an inner radial end section slidably received in the respective slots of the first and second inner rotors (7,8), the linkage plates dividing the space formed between the outer rotor and each of the first and second inner rotors (7,8) into a plurality of chambers, wherein the outer rotor, the first inner rotor, and the respective linkage plates constitute the first pump section and said outer rotor, the second inner rotor, and the respective linkage plates constitute the second pump section, the partitioning plate is fixed to the outer rotor, the partitioning plate being integrally rotated with the outer rotor, having a circular opening section through which the common shaft is penetrated, and having a diameter with an eccentricity of the shaft to the center of the outer rotor taken into consideration, and the opening section of the partitioning plate is not overlapped on the slots at side surfaces of the first and second inner rotors (7, 8).