Abstract: A silica-based particle dispersion including a silica-based particle group and a high polishing rate and high surface precision is achieved to a silica-based substrate or a NiP-plated substrate to be polished or the like. A silica-based particle dispersion containing a group including irregularly-shaped and non-irregularly-shaped silica-based particles, wherein the irregularly-shaped silica-based particles each have a plurality of small holes thereinside and a covering silica layer which covers the core, and the silica-based particle group satisfies [1]-[3]. [1] Having an average particle size (D1) of 100-600 nm, and a particle size (D2) of 30-300 nm in terms of specific surface area. [2] An irregular-shape degree D (D=D1/D3) represented by the average particle size (D1) and a projected area-equivalent particle size (D3) being in the range of 1.1-5.0. [3] When waveform separation is performed on a volume-reference particle size distribution, a multi-peak distribution in which three or more peaks are detected.

Abstract: A silica-based particle dispersion including a silica-based particle group and a high polishing rate and high surface precision is achieved to a silica-based substrate or a NiP-plated substrate to be polished or the like. A silica-based particle dispersion containing a group including irregularly-shaped and non-irregularly-shaped silica-based particles, wherein the irregularly-shaped silica-based particles each have a plurality of small holes thereinside and a covering silica layer which covers the core, and the silica-based particle group satisfies [1]-[3]. [1] Having an average particle size (D1) of 100-600 nm, and a particle size (D2) of 30-300 nm in terms of specific surface area. [2] An irregular-shape degree D (D=D1/D3) represented by the average particle size (D1) and a projected area-equivalent particle size (D3) being in the range of 1.1-5.0. [3] When waveform separation is performed on a volume-reference particle size distribution, a multi-peak distribution in which three or more peaks are detected.

Abstract: The power supply control device in accordance with the present invention includes: a power reception terminal for receiving power; a power supply terminal for supplying power; a relay configured to make and break an electrical connection between the power reception terminal and the power supply terminal; a control circuit configured to control the relay; a power supply circuit configured to supply power to the control circuit by use of power received via the power reception terminal; and a printed wiring board. The control circuit and the power supply circuit are mounted on the printed wiring board.

Abstract: A power feeding control apparatus includes a housing for accommodating at least a relay unit which opens and closes power feeding lines, a control circuit for controlling the relay unit, a leakage current detection circuit for detecting leakage current in the electric vehicle and a power supply circuit for generating a control electric power. The apparatus further includes a power source side connector and a vehicle side connector. The leakage current detection circuit includes a zero current transformer through which the power feeding lines extend and is configured to detect leakage current based on unbalanced currents flowing through the power feeding lines. Lead plates constitute a part of the power feeding lines and pass through a central opening of the zero current transformer, and the zero current transformer includes a positioning member molded within the central opening to fix the positions of the lead plates.

Abstract: The power supply control device includes a body block having a power supply control unit for controlling power supply to an electric motor vehicle, a first cable, connected to the body block, for receiving electric power from a power source, and a second cable, connected to the body block, for feeding the electric power to the electric motor vehicle. One of the body block, and the first cable or the second cable includes an attaching lock part having a cylindrical tubular portion. The other of the body block, and the first cable or the second cable includes an attaching part having an portion to be inserted into the cylindrical tubular portion. The attaching lock part includes an elastic locking piece having a claw with a variable protruding. The claw is engaged with an engaging portion provided on an outer surface of the inserting portion to lock the attaching part.

Abstract: The power supply control device in accordance with the present invention includes: a power reception terminal for receiving power; a power supply terminal for supplying power; a relay configured to make and break an electrical connection between the power reception terminal and the power supply terminal; a control circuit configured to control the relay; a power supply circuit configured to supply power to the control circuit by use of power received via the power reception terminal; and a printed wiring board. The control circuit and the power supply circuit are mounted on the printed wiring board.

Abstract: An electric vehicle charging cord set includes a housing containing an interrupting device therein and a first cord provided at one end with a plug connectable to an outlet installed on a wall surface of a building and at the other end connected to one of the terminal units of the interrupting device. An electric vehicle charging cord set further includes a second cord provided at one end with a connector connectable to an inlet of an electric vehicle and at the other end connected to the other of the terminal units of the interrupting device. The housing includes a storage unit for extendibly storing the second cord, a stand for placing the housing on a ground surface and a transportation handle. The storage unit includes a drum rotatably attached to the housing. The second cord is wound on the outer circumferential surface of the drum.

Abstract: A charging cable for an electric vehicle includes a power plug adapted to be detachably connected to a power socket of a commercial power source; a temperature detecting unit for detecting a temperature of the power plug; a cable connector adapted to be detachably connected to an electric vehicle for supplying a charging current to a battery of the electric vehicle; and a switching unit for opening and closing a current path between the power plug and the cable connector. The charging cable further includes a leakage detecting unit for detecting an electric leakage based on a current flowing through the current path; and a power cutoff unit for opening the switching unit when the detected temperature of the temperature detection means exceeds a threshold value or when the leakage detection means detects the electric leakage.

Abstract: A feed control device includes a contact device, an output detector, a contact weld sensor, and an alarm device. The output detector is configured to detect the presence of power feeding into the side of an electrically-powered car from an external power supply. The contact weld sensor is configured to sense that the contact device is welded based on a detection result of the output detector if detecting the presence of power feeding from the external power supply to a feed line for the contact device when a state signal representing charge permission is not entered. The alarm device is configured, if the contact weld sensor senses that the contact device is welded, to indicate the occurrence of weld to the outside.

Abstract: A power feeding control apparatus includes a housing for accommodating at least a relay unit arranged on power feeding lines to open and close the power feeding lines, a control circuit for controlling the relay unit, a leakage current detection circuit for detecting leakage current in an electric vehicle and a power supply circuit for generating a control electric power. The apparatus further includes a power source side connector removably connected to a socket of an external power source, a vehicle side connector removably connected to a power receiving connector of the electric vehicle and a first and a second board that the power supply circuit and the control circuit are mounted, respectively. A power feeding line block provided separately from the first and the second board and having metal plates constituting the power feeding lines. The metal plates are insertion-molded in the power feeding line block.

Abstract: An electricity feeding control device is provided with an air hole (31c) which is formed by penetrating a part of a peripheral wall of a body (31) constituting a part of a housing case (3). The housing case (3) is provided in its inside with an inner pressure adjusting sheet (5), formed with a breathable and waterproof member, and arranged so as to cover the air hole (31c) from the inside of the housing case (3). The air hole (31c) comprises a long recess (31c2) formed in an outer surface of the body (31), a communicating hole (31c1) consecutively formed in one end of a longi-tudinal direction of the recess (31c2) and communicated with an inner surface of the body (31), and a shielding plate (33) attached in the outer surface of the body (31) so as to cover a region other than the other end of the longitudinal direction of the recess (31c2), in a region of an opening section (31c3) of the recess (31c2).

Abstract: A branch wire L5 from the voltage detection circuit 14 is inserted in the zero-phase-sequence current transformer ZCT in the direction from the load side to the external power supply side. For this configuration, the zero-phase-sequence current transformer ZCT is to detect unbalance of the sum of current flowing in the first and second conductive wires L1, L2 and the current flowing in the branch wire L5. Therefore, the present invention can accurately detect occurrence of electrical leakage.

Abstract: A charging cable for an electric vehicle includes a power plug adapted to be detachably connected to a power socket of a commercial power source; a temperature detecting unit for detecting a temperature of the power plug; a cable connector adapted to be detachably connected to an electric vehicle for supplying a charging current to a battery of the electric vehicle; and a switching unit for opening and closing a current path between the power plug and the cable connector. The charging cable further includes a leakage detecting unit for detecting an electric leakage based on a current flowing through the current path; and a power cutoff unit for opening the switching unit when the detected temperature of the temperature detection means exceeds a threshold value or when the leakage detection means detects the electric leakage.

Abstract: A power supply control device includes a body block having a power supply control circuit and a housing accommodating the power supply control circuit, a power side cable, and a vehicle side cable. At least one of the power side cable and the vehicle side cable has a holder holding contacts. The body block has terminals electrically connected to the power supply control device and held by the housing such that a portion of each of the terminals is exposed out of the housing. The housing is provided with at least one joint part to which the holder is detachably coupled. The contacts are brought into contact with the respective terminals in the state where the holder is coupled to the joint part, so that the respective wires are electrically connected to the power supply control circuit.

Abstract: A power feeding control apparatus includes a housing for accommodating at least a relay unit arranged on power feeding lines to open and close the power feeding lines, a control circuit for controlling the relay unit, a leakage current detection circuit for detecting leakage current in an electric vehicle and a power supply circuit for generating a control electric power. The apparatus further includes a power source side connector removably connected to a socket of an external power source, a vehicle side connector removably connected to a power receiving connector of the electric vehicle and a first and a second board that the power supply circuit and the control circuit are mounted, respectively. A power feeding line block provided separately from the first and the second board and having metal plates constituting the power feeding lines. The metal plates are insertion-molded in the power feeding line block.

Abstract: An electric vehicle charging cord set includes a housing containing an interrupting device therein and a first cord provided at one end with a plug connectable to an outlet installed on a wall surface of a building and at the other end connected to one of the terminal units of the interrupting device. An electric vehicle charging cord set further includes a second cord provided at one end with a connector connectable to an inlet of an electric vehicle and at the other end connected to the other of the terminal units of the interrupting device. The housing includes a storage unit for extendibly storing the second cord, a stand for placing the housing on a ground surface and a transportation handle. The storage unit includes a drum rotatably attached to the housing. The second cord is wound on the outer circumferential surface of the drum.

Abstract: A power feeding control apparatus includes a housing for accommodating at least a relay unit which opens and closes power feeding lines, a control circuit for controlling the relay unit, a leakage current detection circuit for detecting leakage current in the electric vehicle and a power supply circuit for generating a control electric power. The apparatus further includes a power source side connector and a vehicle side connector. The leakage current detection circuit includes a zero current transformer through which the power feeding lines extend and is configured to detect leakage current based on unbalanced currents flowing through the power feeding lines. Lead plates constitute a part of the power feeding lines and pass through a central opening of the zero current transformer, and the zero current transformer includes a positioning member molded within the central opening to fix the positions of the lead plates.

Abstract: A branch wire L5 from the voltage detection circuit 14 is inserted in the zero-phase-sequence current transformer ZCT in the direction from the load side to the external power supply side. For this configuration, the zero-phase-sequence current transformer ZCT is to detect unbalance of the sum of current flowing in the first and second conductive wires L1, L2 and the current flowing in the branch wire L5. Therefore, the present invention can accurately detect occurrence of electrical leakage.

Abstract: An electricity feeding control device is provided with an air hole (31c) which is formed by penetrating a part of a peripheral wall of a body (31) constituting a part of a housing case (3). The housing case (3) is provided in its inside with an inner pressure adjusting sheet (5), formed with a breathable and waterproof member, and arranged so as to cover the air hole (31c) from the inside of the housing case (3). The air hole (31c) comprises a long recess (31c2) formed in an outer surface of the body (31), a communicating hole (31c1) consecutively formed in one end of a longi-tudinal direction of the recess (31c2) and communicated with an inner surface of the body (31), and a shielding plate (33) attached in the outer surface of the body (31) so as to cover a region other than the other end of the longitudinal direction of the recess (31c2), in a region of an opening section (31c3) of the recess (31c2).