Abstract: In a fastening structure and an accelerator pedal device using the fastening structure, a screw is inserted into a screw insertion hole of a cover from a side of the cover facing away from a housing, and the screw is screwed into a screwing hole of a fastening portion of the housing. An annular space is provided between an edge of the screw insertion hole and the fastening portion.

Abstract: An accelerator device includes a first cover that provides an internal space for housing a return spring and a failure region where the first cover engages a second cover. The failure region has a thickness configured to be thinner than a thickness of a body of the first cover. When a pedal rotates to open an accelerator, a second cover side friction member creates a force that pushes the second cover toward an outside of the device. The force is relayed to a contact portion of the first cover via a contact portion of the second cover and causes a failure of the failure region. As a result, the return spring is prevented from falling out of the internal space when the body breaks.

Abstract: An accelerator device includes a first cover that provides an internal space for housing a return spring and a failure region where the first cover engages a second cover. The failure region has a thickness configured to be thinner than a thickness of a body of the first cover. When a pedal rotates to open an accelerator, a second cover side friction member creates a force that pushes the second cover toward an outside of the device. The force is relayed to a contact portion of the first cover via a contact portion of the second cover and causes a failure of the failure region. As a result, the return spring is prevented from falling out of the internal space when the body breaks.

Abstract: A limiting portion of a support member, which rotatably supports an accelerator pedal, forms a gap between a contacting portion of the accelerator pedal and the limiting portion in a state where the accelerator pedal is rotated in a depressing direction. A cover member is provided to one of the support member and the accelerator pedal and covers the gap at any rotational position of the accelerator pedal within a rotatable range of the accelerator pedal.

Abstract: An accelerator pedal rotates a pedal rotor when depressed. Rotors located on both sides of the pedal rotor are relatively rotatable to the pedal rotor. Second helical teeth of the rotors project toward the pedal rotor and engage with first helical teeth of the pedal rotor to bias the rotors when the pedal rotor rotates in the accelerator opening direction. The pedal rotor is rotatable to an accelerator full-close position without interfering with the first helical teeth when the pedal rotor rotates in an accelerator closing direction. A first biasing unit biases the rotors in the accelerator closing direction. A second biasing unit biases the accelerator pedal or the pedal rotor in the accelerator closing direction.

Abstract: An accelerator pedal is engaged with the rotor so that the accelerator pedal is pivotable about a rotation axis. A coil spring is arranged on a biasing axis that is generally tangential to an arc path, along which a protrusion of the rotor passes when the rotor rotates about the rotation axis. A holder is interposed between the protrusion of the rotor and the coil spring. A concave surface of the holder contacts a convex surface of the protrusion. A receiving portion of the holder receives the coil spring. The contact point is located between a second end and a first end of the coil spring. The concave surface of the holder and the convex surface of the protrusion are curved to satisfy a predetermined relationship.

Abstract: A rotational angle sensor and a connector are provided at a first-side portion and a second-side portion, respectively, of a sensor holder. The first-side portion is engaged with a base through a primary engaging arrangement, and the second-side portion is engaged with the base through a secondary engaging arrangement. The secondary engaging arrangement includes secondary engaging portions of the sensor holder, which are provided in the second-side portion of the sensor holder and are engaged with the base. A distance from an engaging point between the secondary engaging portion of the sensor holder and the base to the sensor is longer than a distance from the engaging point between the secondary engaging portion of the sensor holder and the base to the connector.

Abstract: An accelerator pedal rotates a pedal rotor when depressed. Rotors located on both sides of the pedal rotor are relatively rotatable to the pedal rotor. Second helical teeth of the rotors project toward the pedal rotor and engage with first helical teeth of the pedal rotor to bias the rotors when the pedal rotor rotates in the accelerator opening direction. The pedal rotor is rotatable to an accelerator full-close position without interfering with the first helical teeth when the pedal rotor rotates in an accelerator closing direction. A first biasing unit biases the rotors in the accelerator closing direction. A second biasing unit biases the accelerator pedal or the pedal rotor in the accelerator closing direction.

Abstract: Separators (5A, 5B, 6) and membrane-electrode assemblies (2) of a fuel cell stack (1) are alternately stacked in a guide box (40). The separators (5A, 5B, 6) each have groove-like gas paths (10A, 10B). Powder of an adhesive agent (7) is adhered in advance to the surfaces of the separators (5A, 5B, 6), except the gas paths (10A, 10B), through photosensitive drums (31A, 31B) to which the powder is adsorbed in a given pattern. The separators (5A, 5B, 6) and the membrane-electrode assemblies (2), stacked in the guide box (40), are heated and compressed by a press (43) and heaters (40C) to obtain a unitized fuel cell stack (1).

Abstract: A limiting portion of a support member, which rotatably supports an accelerator pedal, forms a gap between a contacting portion of the accelerator pedal and the limiting portion in a state where the accelerator pedal is rotated in a depressing direction. A cover member is provided to one of the support member and the accelerator pedal and covers the gap at any rotational position of the accelerator pedal within a rotatable range of the accelerator pedal.

Abstract: A friction washer (70, 80, 90) is placed between a housing (10) and a pedal member (20) and exerts a frictional force against rotational movement of the pedal member (20). The friction washer (70, 80, 90) includes at least one displaceable portion (72, 75, 82, 85, 92, 95), which is adapted to be displaced relative to the rest of the friction washer (70, 80, 90) by a predetermined amount in a circumferential direction about a rotational axis (O) of the pedal member (20) upon rotation of the pedal member (20).

Abstract: Separators (5A, 5B, 6) and membrane-electrode assemblies (2) of a fuel cell stack (1) are alternately stacked in a guide box (40). The separators (5A, 5B, 6) each have groove-like gas paths (10A, 10B). Powder of an adhesive agent (7) is adhered in advance to the surfaces of the separators (5A, 5B, 6), except the gas paths (10A, 10B), through photosensitive drums (31A, 31B) to which the powder is adsorbed in a given pattern. The separators (5A, 5B, 6) and the membrane-electrode assemblies (2), stacked in the guide box (40), are heated and compressed by a press (43) and heaters (40C) to obtain a unitized fuel cell stack (1).

Abstract: An accelerator capable of detecting a turning angle of an accelerator pedal with high accuracy includes a bearing part, an urging part, an accelerator pedal, a stopper, and a turning angle sensor. The accelerator pedal has a turning shaft supported by the bearing part and is turned forward when a depressing force is applied thereto and is turned reversely when the urging force of the urging part is applied thereto. The stopper abuts against the accelerator pedal to limit the reverse turn of the accelerator pedal and substantially simultaneously guides the accelerator pedal in a direction equivalent to that which the urging force is applied. The turning angle sensor detects the turning angle of the accelerator pedal.

Abstract: Separators (5A, 5B, 6) and membrane-electrode assemblies (2) of a fuel cell stack (1) are alternately stacked in a guide box (40). The separators (5A, 5B, 6) each have groove-like gas paths (10A, 10B). Powder of an adhesive agent (7) is adhered in advance to the surfaces of the separators (5A, 5B, 6), except the gas paths (10A, 10B), through photosensitive drums (31A, 31B) to which the powder is adsorbed in a given pattern. The separators (5A, 5B, 6) and the membrane-electrode assemblies (2), stacked in the guide box (40), are heated and compressed by a press (43) and heaters (40C) to obtain a unitized fuel cell stack (1).

Abstract: A rotational angle sensor and a connector are provided at a first-side portion and a second-side portion, respectively, of a sensor holder. The first-side portion is engaged with a base through a primary engaging arrangement, and the second-side portion is engaged with the base through a secondary engaging arrangement. The secondary engaging arrangement includes secondary engaging portions of the sensor holder, which are provided in the second-side portion of the sensor holder and are engaged with the base. A distance from an engaging point between the secondary engaging portion of the sensor holder and the base to the sensor is longer than a distance from the engaging point between the secondary engaging portion of the sensor holder and the base to the connector.

Abstract: An accelerator pedal is engaged with the rotor so that the accelerator pedal is pivotable about a rotation axis. A coil spring is arranged on a biasing axis that is generally tangential to an arc path, along which a protrusion of the rotor passes when the rotor rotates about the rotation axis. A holder is interposed between the protrusion of the rotor and the coil spring. A concave surface of the holder contacts a convex surface of the protrusion. A receiving portion of the holder receives the coil spring. The contact point is located between a second end and a first end of the coil spring. The concave surface of the holder and the convex surface of the protrusion are curved to satisfy a predetermined relationship.

Abstract: A spring apparatus includes a double coil spring and an elastically deformable damper made of resin. The double coil spring includes an outer coil spring and an inner coil spring. The damper has at least one ring portion. The damper is arranged such that at least a part of the damper is in contact with the outer coil spring and the inner coil spring. A spring line of one of the outer coil spring and the inner coil spring passes through the ring portion, so that the ring portion is caught in the one of the outer coil spring and the inner coil spring and the damper is held between the outer coil spring and the inner coil spring.

Abstract: Separators (5A, 5B, 6) and membrane-electrode assemblies (2) of a fuel cell stack (1) are alternately stacked in a guide box (40). The separators (5A, 5B, 6) each have groove-like gas paths (10A, 10B). Powder of an adhesive agent (7) is adhered in advance to the surfaces of the separators (5A, 5B, 6), except the gas paths (10A, 10B), through photosensitive drums (31A, 31B) to which the powder is adsorbed in a given pattern. The separators (5A, 5B, 6) and the membrane-electrode assemblies (2), stacked in the guide box (40), are heated and compressed by a press (43) and heaters (40C) to obtain a unitized fuel cell stack (1).

Abstract: This invention relates to a manufacturing method for a polymer electrolyte fuel cell which is formed by laminating a first gas diffusion layer (6A) and a first separator (7A) on one surface of a membrane electrode assembly (9), and laminating a second gas diffusion layer (6B) and a second separator (7B) on the other surface of the membrane electrode assembly (9). An adhesive is applied to a surface of the first separator (7A) which contacts the first gas diffusion layer (6A), the adhesive is applied to a surface of the second separator (7B) which contacts the second gas diffusion layer (6B), and the first separator (7A), first gas diffusion layer (6A), membrane electrode assembly (9), second gas diffusion layer (6B), and second separator (7B) are disposed between a pair of pressing jigs (113, 123) so as to be laminated in the described sequence. An integrated fuel cell is obtained by applying heat and compression to the first separator (7A) and second separator (7B) using the pressing jigs (113, 123).

Abstract: The present invention has an object of providing a sewage treatment method and a sewage treatment system in a combined sewer system which can safely treat sewage, and in a combined sewer system where wastewater and rainwater collected flow together as the sewage in a single pipe, the sewage is electrochemically treated, i.e., electrolytically treated by use of electrodes for electrolysis to produce hypohalogenous acid, ozone or activated oxygen in the sewage. The thus produced hypohalogenous acid, ozone or activated oxygen can treat contaminants such as organic substances and coliforms present in the sewage.