Abstract: A combined weighing system 1 includes a first X-ray inspection device 20, a combined weighing device 40, a bag making and packaging device 50, a weight inspection device 60, a second X-ray inspection device 70, and a management device 90 that manages each device. The management device 90 revises a weight conversion table of the first X-ray inspection device 20 and a correction value of the combined weighing device 40 based on an average value of weights of products B, which is calculated from a result of inspection over a certain time period in the weight inspection device 60.

Abstract: A fishing rod includes a hollow rod extending along a central axis; and a shaft member with an outer peripheral surface inclined relative to the central axis inserted into the rod from the one end, and that is supported by an inner peripheral surface of the rod at a support position on another end side of the one end in an axial direction along the central axis, wherein the inner peripheral surface of the rod has at least one convex portion protruding toward the central axis from a virtual curve between the support position and the one end position axially when drawing a virtual curve that is convex toward the central axis through the support position and the one end position at the end of the end side of the inner peripheral surface in an area radially outward from the outer peripheral surface of the shaft member.

Abstract: The center axis of a rotational output member of an electric power assist device and the center axis of a crankshaft can be adjusted to be in parallel to each other without complicating the structure. The electric power assist device comprises a housing 52, an electric motor 58 supported by the housing, and an annular rotational output member 64 configured to be connected to a crankshaft 24 or a crankarm 26 attached to the crankshaft so as to be rotatively driven by the electric motor coaxially with respect to the crankshaft, wherein the housing is supported on the frame structure 18 via a support part 90 provided with an adjustment mechanism 120 to allow a position of the housing along an axial direction of the crankshaft to be varied.

Abstract: A bicycle electric power assist device includes: an electric motor connected in a torque transmitting relationship to a crank arm or a crankshaft driven by a pedal force; a battery; a control unit configured to control operation of the electric motor; a rotation angle sensor configured to detect a crank rotation angle position of the crankshaft; and a current sensor configured to detect a motor current, wherein the control unit includes: a pedal force estimation/calculation unit configured to estimate the pedal force of the pedals from a difference between the motor current in a first crank rotation angle position and the motor current in a second crank rotation angle position which is different from the first crank rotation angle position; and a motor drive control unit configured to control a drive current of the electric motor according to the pedal force estimated by the pedal force estimation/calculation unit.

Abstract: To allow a wide range of existing bicycles to be easily converted into electric power assisted bicycles, a retrofit electric machine for a bicycle includes: a housing (52) configured to be attached to a frame (18) of a bicycle (10), an electric motor (54) attached to the housing (52); an annular rotating plate (84) mounted on the housing (52) in a rotatable manner and connected to the electric motor (54) in a torque transmitting relationship; a pair of rotatable claw members (96) mounted on the rotating member (84) and having parts configured to abut against either rotational side of a crankarm (26) for a pedal of the bicycle (10); and a connecting member (40, 92) configured to connect the rotatable claw members (96) with a rotationally central part of the crankarm (26) such that the rotating plate (84) is concentric to a rotational center line of the crankarm (26).

Abstract: An electric power assist device (50) includes a first to a third pedal force estimating computation unit (152, 154, 156) that estimate the pedal force of the bicycle according to variances between values of a first to a third state quantity detected by the first to third pedal force estimating computation units at two mutually different crank angle positions, a motor drive control unit (164) configured to control a drive of an electric motor according to a selected one of the pedal forces estimated by the first, the second and the third state quantity detecting units, and a failure diagnosis unit (158) configured to diagnose failures of the first, the second and the third state quantity detecting units by evaluating the variances in the values of first, the second and the third state quantities.

Abstract: Provided is an electric power-assist device which can be used to retrofit and convert an existing bicycle to a power assisted bicycle with ease, and enables proper power assist control in response to the pedaling force, without major modifications to the bicycle. The device comprises an electric motor 58 connected to a crankshaft 24 or a crankarm 28 of a bicycle 10; a rotational angle sensor 130 for detecting a crank rotational angle of the crankshaft; an acceleration sensor 134 for detecting an acceleration level in a traveling direction of the bicycle; and a control unit 150 for controlling the electric motor 58, wherein the control unit comprises: a pedaling force estimator 152 for estimating a pedaling force based on an acceleration level measured at a predetermined crank rotational angle; and a motor drive controller 158 for controlling the electric motor 58 based on the estimated pedaling force.

Abstract: Provided is an electric power assist device for bicycles, which can achieve proper power assist control in response to the pedaling force without any complicated feature for detecting pedaling forces and any necessity of modification to a bicycle. The device comprises: a pedaling force estimator 154 configured to estimate a pedaling force put on each pedal of a bicycle based on a variation between average current levels I flowing in an electric motor 58 measured within a first crank rotational angle range A and a second crank rotational angle range B which is different from the first crank rotational angle range; and a crank rotational angle adjuster 152 configured to adjust the first crank rotational angle range A and the second crank rotational angle range B according to the gradient of a road on which the bicycle is traveling.

Abstract: Electric power can be generated by using an existing bicycle without impairing the durability of the tire of the bicycle. The bicycle generator device (50) comprises a housing (52) configured to be attached to a frame (18) of a bicycle (10), a generator (54) attached to the housing (52), an annular rotational input member (81) for rotationally driving the generator (54), the rotational input member being rotatably mounted on the housing and positioned around a crank axis line which is a rotational center line of a crankshaft (24) and a crank arm (26) for a pedal of the bicycle, and a connecting member (90, 130) connecting the rotational input member (81) to the crankshaft (24) or the crank arm (26) in a torque transmitting relationship.

Abstract: To allow a wide range of existing bicycles to be easily converted into electric power assisted bicycles, a retrofit electric machine for a bicycle includes: a housing (52) configured to be attached to a frame (18) of a bicycle (10), an electric motor (54) attached to the housing (52); an annular rotating plate (84) mounted on the housing (52) in a rotatable manner to be centered around a rotational center line of a crankshaft (24) for a pedal of the bicycle (10), and connected to the electric motor (54) in a torque transmitting relationship; and a connecting member (90) including a first connecting portion (92) connected to the crankshaft (24) with a shape fit so as to rotate integrally with the crankshaft (24), and a connecting pin (98) secured to the rotating plate (84).

Abstract: A wide range of existing bicycles can be converted into electric power assisted bicycles with ease. The bicycle electric power assist device comprises a housing (52) configured to be attached to a frame (18) of a bicycle (10), an electric motor (54) attached to the housing (52), a battery (102) configured to be mounted to the frame and serves as a power source for the electric motor, an annular rotational output member (81) rotationally driven by the electric motor (54), the rotational output member being rotatably mounted on the housing and positioned around a crank axis line which is a rotational center line A of a crankshaft (24) and a crank arm (26) for a pedal of the bicycle, and a connecting member (90) connecting the rotational output member (81) to the crankshaft (24) or the crank arm (26) in a torque transmitting relationship.

Abstract: The present invention relates to an electric power assist device for bicycles, which enables proper power assist control in response to a pedaling force without any complicated feature for detecting pedaling force and any necessary modification to the bicycle.

Abstract: The present invention relates to an electric power assist device which can achieve proper power assist control regardless of the angle at which the electric power assist device mounted on a bicycle.

Abstract: The center axis of a rotational output member of an electric power assist device and the center axis of a crankshaft can be adjusted to be in parallel to each other without complicating the structure. The electric power assist device comprises a housing 52, an electric motor 58 supported by the housing, and an annular rotational output member 64 configured to be connected to a crankshaft 24 or a crankarm 26 attached to the crankshaft so as to be rotatively driven by the electric motor coaxially with respect to the crankshaft, wherein the housing is supported on the frame structure 18 via a support part 90 provided with an adjustment mechanism 120 to allow a position of the housing along an axial direction of the crankshaft to be varied.

Abstract: To allow assist control according to the pedal force to be performed in a bicycle electric power assist device without complicating the structure for detecting the pedal force and/or requiring modification of the bicycle, a bicycle electric power assist device (50) includes: an electric motor (54) connected in a torque transmitting relationship to a crank arm (26) or a crankshaft (24) driven by a pedal force from pedals (30) via the crank arm (28); a battery (102) to be mounted on a bicycle to serve as a power supply for the electric motor (54); a control unit (100) configured to control operation of the electric motor (54); a rotation angle sensor (110) configured to detect a crank rotation angle position of the crankshaft (24); and a current sensor (116) configured to detect a motor current of the electric motor (54), wherein the control unit (100) includes: a pedal force estimation/calculation unit (120) configured to estimate the pedal force of the pedals (30) from a difference between the motor current i

Abstract: To allow a wide range of existing bicycles to be easily converted into electric power assisted bicycles, a retrofit electric machine for a bicycle includes: a housing (52) configured to be attached to a frame (18) of a bicycle (10), an electric motor (54) attached to the housing (52); an annular rotating plate (84) mounted on the housing (52) in a rotatable manner to be centered around a rotational center line of a crankshaft (24) for a pedal of the bicycle (10), and connected to the electric motor (54) in a torque transmitting relationship; and a connecting member (90) including a first connecting portion (92) connected to the crankshaft (24) with a shape fit so as to rotate integrally with the crankshaft (24), and a connecting pin (98) secured to the rotating plate (84).

Abstract: To allow a wide range of existing bicycles to be easily converted into electric power assisted bicycles, a retrofit electric machine for a bicycle includes: a housing (52) configured to be attached to a frame (18) of a bicycle (10), an electric motor (54) attached to the housing (52); an annular rotating plate (84) mounted on the housing (52) in a rotatable manner and connected to the electric motor (54) in a torque transmitting relationship; a pair of rotatable claw members (96) mounted on the rotating member (84) and having parts configured to abut against either rotational side of a crankarm (26) for a pedal of the bicycle (10); and a connecting member (40, 92) configured to connect the rotatable claw members (96) with a rotationally central part of the crankarm (26) such that the rotating plate (84) is concentric to a rotational center line of the crankarm (26).

Abstract: An exercise measurement device comprises a housing for attaching to a frame of a bicycle, a generator, an annular rotational input member for rotationally driving the generator, the rotational input member being rotatably mounted on the housing and positioned around a crank axis line, a connecting member connecting the rotational input member to the crankshaft or the crank arm in a torque transmitting relationship, a sensor for detecting at least one of electric current of the generator, a rotational speed of the generator or the crank arm, a torque of the crank arm, a position of the crank arm, a strain in the crank arm, and a pressure on the pedal, a measurement computing unit for computing at least one of power and a pedaling force from an output of the sensor, and a display unit for displaying a computed value of the measurement computing unit.

Abstract: Electric power can be generated by using an existing bicycle without impairing the durability of the tire of the bicycle. The bicycle generator device (50) comprises a housing (52) configured to be attached to a frame (18) of a bicycle (10), a generator (54) attached to the housing (52), an annular rotational input member (81) for rotationally driving the generator (54), the rotational input member being rotatably mounted on the housing and positioned around a crank axis line which is a rotational center line of a crankshaft (24) and a crank arm (26) for a pedal of the bicycle, and a connecting member (90, 130) connecting the rotational input member (81) to the crankshaft (24) or the crank arm (26) in a torque transmitting relationship.

Abstract: A wide range of existing bicycles can be converted into electric power assisted bicycles with ease. The bicycle electric power assist device comprises a housing (52) configured to be attached to a frame (18) of a bicycle (10), an electric motor (54) attached to the housing (52), a battery (102) configured to be mounted to the frame and serves as a power source for the electric motor, an annular rotational output member (81) rotationally driven by the electric motor (54), the rotational output member being rotatably mounted on the housing and positioned around a crank axis line which is a rotational center line A of a crankshaft (24) and a crank arm (26) for a pedal of the bicycle, and a connecting member (90) connecting the rotational output member (81) to the crankshaft (24) or the crank arm (26) in a torque transmitting relationship.