Outboard motor

Abstract

An outboard motor for propelling a ship, includes: a propeller unit including a propeller shaft, a propeller fixed to the propeller shaft, and a case for rotatably supporting the propeller shaft; a support portion formed in a columnar shape extending in an upper-lower direction and having a lower end portion to which the propeller unit is supported; a bracket provided at an upper portion of the support portion and configured to attach the support portion to the ship; and a fine dust capturing device having a passage through which water around the outboard motor flows and configured to capture fine dust contained in the water flowing through the passage. The fine dust capturing device is provided between the lower end portion of the support portion and the case such that an extension direction of the passage is a front-rear direction of the outboard motor.

1 . An outboard motor for propelling a ship, the outboard motor comprising:
 a propeller unit including a propeller shaft, a propeller fixed to the propeller shaft, and a case for rotatably supporting the propeller shaft;   a support portion formed in a columnar shape extending in an upper-lower direction and having a lower end portion to which the propeller unit is supported;   a bracket provided at an upper portion of the support portion and configured to attach the support portion to the ship; and   a fine dust capturing device having a passage through which water around the outboard motor flows and configured to capture fine dust contained in the water flowing through the passage, wherein   the fine dust capturing device is provided between the lower end portion of the support portion and the case such that an extension direction of the passage is a front-rear direction of the outboard motor.   
     
     
         2 . The outboard motor according to  claim 1 , wherein
 the fine dust capturing device is disposed at a center in a left-right direction of the lower end portion of the support portion.   
     
     
         3 . The outboard motor according to  claim 1 , wherein
 two coupling portions are provided at the lower end portion of the support portion, one coupling portion of the two coupling portions couples between the lower end portion of the support portion and a left portion of the case, the other coupling portion thereof couples between the lower end portion of the support portion and a right portion of the case, a space is formed between the lower end portion of the support portion and a central portion of an upper portion of the case in a left-right direction, and the fine dust capturing device is provided in the space.   
     
     
         4 . The outboard motor according to  claim 3 , wherein
 the one coupling portion of the two coupling portions extends downward from the lower end portion of the support portion while inclining leftward to reach the left portion of the case, and the other coupling portion thereof extends downward from the lower end portion of the support portion while inclining rightward to reach the right portion of the case.   
     
     
         5 . The outboard motor according to  claim 3 , wherein
 the fine dust capturing device is in contact with an upper surface of the case.   
     
     
         6 . The outboard motor according to  claim 3 , wherein
 when the outboard motor is viewed from a front side, a shape of the space is a triangular shape, the fine dust capturing device is formed in a tubular shape having a triangular cross-sectional shape, and the fine dust capturing device is provided in the space such that the triangular cross-sectional shape of the fine dust capturing device matches the triangular shape of the space.   
     
     
         7 . The outboard motor according to  claim 3 , wherein
 the fine dust capturing device includes
 a main body portion that is formed in a tubular shape, 
 a water intake that is provided on one axial end side of the main body portion and allows water around the outboard motor to flow into the passage, 
 a filter that is provided in the middle of the passage in the main body portion and captures the fine dust contained in the water by allowing the water flowing through the passage to pass therethrough, and 
 a water outlet that is provided on the other axial end side of the main body portion and discharges the water after passing through the filter to a periphery of the outboard motor, and 
   the passage extends in the main body portion in an axial direction of the main body portion.   
     
     
         8 . The outboard motor according to  claim 7 , wherein
 at least a part of the main body portion is formed of a transparent material, at least one of the two coupling portions is formed with a through hole penetrating the coupling portion, and the through hole is disposed at a position corresponding to a portion formed of the transparent material in the main body portion in a state in which the fine dust capturing device is provided in the space.