A gear mounting structure includes a worm shaft, a gear, and an elastic member. The worm shaft includes a shaft body, on the outer surface of which is formed intersecting spiral grooves, and a gear locking portion with a non-circular cross section, on at least a portion of the outer surface of which is formed a curved surface portion and a planar portion. The gear includes a gear body, on the outer surface of which are formed teeth, and to which the handle rotation is transmitted, and a boss portion protruding from the gear body and having an engagement portion engaging the gear locking portion. The elastic member is mounted so as to abut the outer surface of the boss portion of the gear, and at least a portion of the curved surface portion of the gear locking portion.

A gear mounting structure includes a worm shaft, a gear, and an elastic member. The worm shaft includes a shaft body, on the outer surface of which is formed intersecting spiral grooves, and a gear locking portion with a non-circular cross section, on at least a portion of the outer surface of which is formed a curved surface portion and a planar portion. The gear includes a gear body, on the outer surface of which are formed teeth, and to which the handle rotation is transmitted, and a boss portion protruding from the gear body and having an engagement portion engaging the gear locking portion. The elastic member is mounted so as to abut the outer surface of the boss portion of the gear, and at least a portion of the curved surface portion of the gear locking portion.

A solar tracking system is provided and includes a solar array, a plurality of support beams configured to support the solar array, a torque tube coupled to the plurality of support beams, a base configured to rotatably support the torque tube, and an articulation system configured to rotate the torque tube relative to the base. The articulation system includes a first helical tube coupled to the torque tube, a first helical tube support disposed on the base and configured to slidably support the first helical tube, and a gearbox in mechanical communication with the first helical tube. Actuation of the gearbox causes the first helical tube to translate within the first helical tube support and the first helical tube support is configured to rotate the first helical tube as the first helical tube is translated therein to cause a corresponding rotation of the solar array.

A mechanism for moving a sensor within a volume constrained sensor compartment, which includes a cam path defined within the compartment, a cam follower mounted for movement throughout the cam path, a support assembly connected to the cam follower for carrying the sensor within the compartment as the cam follower moves throughout the cam path, and a flipper cam mounted for movement relative to the cam path between a first position permitting the cam follower to move within a left side portion of the cam path so as to translate and rotate the sensor within a left side of the compartment and a second position permitting the cam follower to move within a right side portion of the cam path so as to translate and rotate the sensor within a right side of the compartment.

A mechanism for moving a sensor within a volume constrained sensor compartment, which includes a cam path defined within the compartment, a cam follower mounted for movement throughout the cam path, a support assembly connected to the cam follower for carrying the sensor within the compartment as the cam follower moves throughout the cam path, and a flipper cam mounted for movement relative to the cam path between a first position permitting the cam follower to move within a left side portion of the cam path so as to translate and rotate the sensor within a left side of the compartment and a second position permitting the cam follower to move within a right side portion of the cam path so as to translate and rotate the sensor within a right side of the compartment.

A mechanism for moving a sensor within a volume constrained sensor compartment, which includes a cam path defined within the compartment, a cam follower mounted for movement throughout the cam path, a support assembly connected to the cam follower for carrying the sensor within the compartment as the cam follower moves throughout the cam path, and a flipper cam mounted for movement relative to the cam path between a first position permitting the cam follower to move within a left side portion of the cam path so as to translate and rotate the sensor within a left side of the compartment and a second position permitting the cam follower to move within a right side portion of the cam path so as to translate and rotate the sensor within a right side of the compartment.

A mechanism for moving a sensor within a volume constrained sensor compartment, which includes a cam path defined within the compartment, a cam follower mounted for movement throughout the cam path, a support assembly connected to the cam follower for carrying the sensor within the compartment as the cam follower moves throughout the cam path, and a flipper cam mounted for movement relative to the cam path between a first position permitting the cam follower to move within a left side portion of the cam path so as to translate and rotate the sensor within a left side of the compartment and a second position permitting the cam follower to move within a right side portion of the cam path so as to translate and rotate the sensor within a right side of the compartment.

A level wind mechanism for a dual-bearing reel including a first reel body and a second reel body includes a worm shaft, a guide member, and a first seal member. The worm shaft including a first end, a second end, a shaft body and a helical groove. The first end is on the same side as the first reel body. The second end is on the same side as the second reel body. The shaft body extends between the first end and the second end. The helical groove is on the shaft body. The guide member includes a tubular shape, is outside the worm shaft in a radial direction from a rotational axis of the worm shaft, and extends between the first reel body and the second reel body. The first seal member seals between the first end of the worm shaft and the guide member.

A level wind mechanism for a dual-bearing reel including a first reel body and a second reel body includes a worm shaft, a guide member, and a first seal member. The worm shaft including a first end, a second end, a shaft body and a helical groove. The first end is on the same side as the first reel body. The second end is on the same side as the second reel body. The shaft body extends between the first end and the second end. The helical groove is on the shaft body. The guide member includes a tubular shape, is outside the worm shaft in a radial direction from a rotational axis of the worm shaft, and extends between the first reel body and the second reel body. The first seal member seals between the first end of the worm shaft and the guide member.

A gear mounting structure includes a worm shaft, a gear, and an elastic member. The worm shaft includes a shaft body, on the outer surface of which is formed intersecting spiral grooves, and a gear locking portion with a non-circular cross section, on at least a portion of the outer surface of which is formed a curved surface portion and a planar portion. The gear includes a gear body, on the outer surface of which are formed teeth, and to which the handle rotation is transmitted, and a boss portion protruding from the gear body and having an engagement portion engaging the gear locking portion. The elastic member is mounted so as to abut the outer surface of the boss portion of the gear, and at least a portion of the curved surface portion of the gear locking portion.