Ōsaka, Japan
Ōsaka, Japan

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The present invention is directed to a magnetic seal device comprising a magnetic sleeve (7) having a cylindrical body (71) and fitting on an outer peripheral surface of a rotatable shaft (3), a ring shaped magnet (8) being arranged radially outwardly from an outer peripheral surface of the magnetic sleeve (7) with a gap, and forming a magnetic circuit between the outer peripheral surface of the magnetic sleeve (7) and the ring shaped magnet (8), and a magnetic fluid (10) being maintained at the gap. The magnetic sleeve (7) includes a groove (72) arranged circumferentially around the outer peripheral surface of the magnetic sleeve (7), and a flange (73) extending radially outwardly from and circumferentially around the outer peripheral surface of the magnetic sleeve (7), wherein the flange has a diameter that is larger than a diameter of the outer peripheral surface of the magnetic sleeve (7). The invention is further directed to a fishing reel comprising such a magnetic sleeve.


Patent
Shimano Inc. | Date: 2017-03-15

A spool (4) for preventing backlash includes a bobbin trunk (7a), a rear flange portion (18e), and a front flange portion (8). The front flange portion (8) includes a first protruding portion (117a) and a first oblique portion (117b) that protrudes upward and forward from a tip of the first protruding portion (117a). The rear flange portion (18e) includes a second protruding portion (18a) and a second oblique portion (18b) that protrudes upward and rearward from a tip of the second protruding portion (18a). A length (B) in the radial direction of the second protruding portion (18b) is approximately the same as a length (A) of the first protruding portion (117a).


Patent
Shimano Inc. | Date: 2016-06-29

A bicycle derailleur motor gear unit configured to reduce motor speed of a motor and transmit motor torque of the motor to a derailleur is proposed. The bicycle derailleur motor gear unit comprises an output shaft, a fixed sun gear, an output sun gear rotatable relative to the fixed sun gear, the output sun gear being fixedly coupled to the output shaft, a plurality of planet gears, and a carrier rotatably and revolvably supporting the planet gears. Each of the planet gears has a first gear that engages with the fixed sun gear and a second gear that engages with the output sun gear, the first gear and the second gear being coaxially coupled to each other. The fixed sun gear, the output sun gear, the first gear, and the second gear have tooth counts, respectively, such that the fixed sun gear, the output sun gear, the first gear, and the second gear lock while an external force is exerted to the output sun gear.


Patent
Shimano Inc. | Date: 2016-08-17

A bicycle frame includes a first frame member and a second frame member configured to be pivotally connected to the first frame member about a pivot axis. The first frame member includes a threaded hole, through which a fixing bolt for fixing a mounting member of a bicycle front derailleur to the first frame member passes, and an abutting portion configured to restrict rotation of a mounting member of a bicycle front derailleur around the fixing bolt by abutting the mounting member. The threaded hole is located on a front side of the pivot axis.


Patent
Shimano Inc. | Date: 2016-06-02

A bicycle transmission device is basically configured to improve the detection accuracy of the tilt angle of the road surface. The bicycle transmission device has a transmission for changing the gear ratio of the bicycle, and a tilt sensor disposed on the transmission and that outputs a signal that reflects the inclination of the transmission.


Patent
Shimano Inc. | Date: 2016-06-15

A bicycle transmission control apparatus is provided that can perform a shift control according to the traveling environment of the bicycle. The bicycle transmission control apparatus includes a controller that operates a transmission according to a parameter that represents a traveling state of a bicycle and predetermined shifting conditions. The controller sets the predetermined shifting condition based on the parameter representing a running state of the bicycle and on a tilt angle of the bicycle.


A bicycle control apparatus is provided that permits a determination of a rotating body to be detected of a sensor that outputs a signal that reflects the rotational speed of a rotating body, and a bicycle assist device equipped with this control apparatus. The bicycle control apparatus includes a controller that, based on an output of a first sensor for outputting a signal that reflects a rotational speed of a rotating body provided to a bicycle, and an output of a second sensor for outputting a signal that reflects a rotational speed of a rotating body provided to the bicycle, determines whether or not the detection target of the first sensor and the detection target of the second sensor are the same rotating body.


Patent
Shimano Inc. | Date: 2016-02-23

A bicycle transmission device basically includes an input rotational shaft, an output part, a transmission mechanism that accelerates a rotational input that is input from the input rotational shaft and outputted to the output part, and a switching mechanism that selectively engages and disengages the transmission mechanism between the input rotational shaft and the output part. The transmission mechanism has first, second, third and fourth rotating bodies. The first rotating body is rotatable with the input rotational shaft. The second rotating body rotates around a stationary center axis with respect to the input rotational shaft and to which the torque of the first rotating body is transmitted. The third rotating body rotates with the second rotating body. The fourth rotating body receives torque from the third rotating body and rotates with the output part.


Patent
Shimano Inc. | Date: 2016-02-26

A bicycle drive unit is basically provided with an input rotational shaft, an output part, a transmission mechanism, an assist motor and a switching mechanism. The transmission mechanism has at least two shift stages, and is configured to change a speed of a rotational input that is input from the input rotational shaft and output this rotational input to the output part. The assist motor is coupled to a power transmission path from the input rotational shaft to the output part, and is driven according to a manual drive force. The switching mechanism is configured to switch a gear changing state of the transmission mechanism by using a rotational force of the assist motor.


Patent
Shimano Inc. | Date: 2016-03-01

A dual-bearing reel includes a reel body, a spool, a drag mechanism, a drag lever, and an engagement member. The drag mechanism is configured to brake the rotation of the spool. The drag lever is pivotably attached to the first reel body portion so as to be operable between a first region and a second region. The engagement member protrudes from the drag lever when the drag lever is in the first region. Further, the engagement member is retracted into the drag lever when the drag lever is in the second region.

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