A propulsion unit for lifebuoy

Abstract

According to the present inventive concept, a propulsion unit for a lifebuoy, includes: a buoyancy body provided to float on water surface; at least one or more auxiliary fastening parts coupled to the buoyancy body; at least one or more repositioning parts coupled to the auxiliary fastening parts; and at least one or more propulsion parts fastened to the repositioning parts so as to move the buoyancy body.

1 . A propulsion unit for a lifebuoy, comprising:
 a buoyancy body ( 100 ) provided to float on water surface;   at least one or more auxiliary fastening parts ( 200 ) coupled to the buoyancy body;   at least one or more repositioning parts ( 300 ) coupled to the auxiliary fastening parts; and   at least one or more propulsion parts ( 400 ) fastened to the repositioning parts so as to move the buoyancy body.   
     
     
         2 . The propulsion unit for a lifebuoy according to  claim 1 , wherein the repositioning parts ( 300 ) are provided to change positions of the propulsion parts on the basis of the water surface so as to allow the propulsion parts to be positioned underwater when the buoyancy body is floating, and the repositioning parts ( 300 ) are provided so as to rotate at a predetermined angle. 
     
     
         3 . The propulsion unit for a lifebuoy according to  claim 2 , wherein
 each of the repositioning parts ( 300 ) includes:   a housing ( 310 ) provided to form a predetermined space therein;   a driving module ( 320 ), which is provided so as to be separated from the housing, has a part accommodated inside the housing, and includes a driving means for driving the repositioning part;   a coupling means ( 330 ), which is provided to be coupled to the propulsion part while being rotated by being fastened to the driving means, and has a rotating shaft parallel to propulsion direction of the propulsion part.   
     
     
         4 . The propulsion unit for a lifebuoy according to  claim 3 , wherein
 each of the auxiliary fastening parts ( 200 ) further includes a guide member ( 210 ) extending from the buoyancy body in propulsion direction of the propulsion unit, and   each of the repositioning parts ( 300 ) further includes a sliding coupling part ( 340 ) coupled by sliding in extension direction of the guide member.   
     
     
         5 . The propulsion unit for a lifebuoy according to  claim 3 , wherein
 the driving module ( 320 ) slidingly moves from one end of the housing ( 310 ) toward the other end thereof so as to be detachably coupled to the housing ( 310 ), and   the driving module ( 320 ) includes:   a module body ( 321 ) provided to be accommodated inside the housing and slidingly coupled to the housing;   a control unit ( 322 ), which is coupled to the module body and performs driving control of the driving module; and   a power supply unit ( 323 ), which is provided to be coupled to the module body so as to supply power to the driving module.   
     
     
         6 . The propulsion unit for a lifebuoy according to  claim 2 , further comprising a detachable fastening part ( 500 ) detachably coupled to at least one or more selected from the buoyancy body having various shapes and the auxiliary fastening parts. 
     
     
         7 . The propulsion unit for a lifebuoy according to  claim 6 , wherein
 the detachable fastening part ( 500 ) includes:   a fastening member ( 510 ) detachably fastened to the buoyancy body; and   a plurality of detachable bodies ( 520 ), which are coupled to the auxiliary fastening parts and hinge-coupled at at least one or more points so as to be foldable.   
     
     
         8 . The propulsion unit for a lifebuoy according to  claim 7 , wherein
 a plurality of auxiliary fastening parts is provided, and   the detachable bodies ( 520 ) include:   a first detachable body ( 521 ) provided to be hinge-coupled to any one auxiliary fastening part selected from the plurality of auxiliary fastening parts;   a second detachable body ( 522 ), which is provided to be hinge-coupled to the first detachable body and hinge-coupled to the other one auxiliary fastening part selected from the plurality of auxiliary fastening parts; and   an angle fixing member ( 530 ), which is provided to restrain at least one or more of the detachable bodies selected from the first detachable body and the second detachable body, and both end portions of which are coupled to the auxiliary fastening parts adjacent to the both end portions, respectively.   
     
     
         9 . The propulsion unit for a lifebuoy according to  claim 2 , further comprising:
 a control unit ( 322 ) provided to generate a control signal for controlling one or more selected from the propulsion parts and the repositioning parts; and   a sensing unit ( 600 ) provided to detect at least any one or more selected from driving loads and arrangement positions of the propulsion parts.   
     
     
         10 . The propulsion unit for a lifebuoy according to  claim 9 , wherein
 the sensing unit ( 600 ) includes a load sensing means ( 610 ) for sensing driving loads of the propulsion parts, and   the control unit ( 322 ) obtains at least one or more load values through the load sensing means, and drives the repositioning parts by generating control signals for driving the repositioning parts when the load values obtained through the load sensing means are less than a preset load value.   
     
     
         11 . The propulsion unit for a lifebuoy according to  claim 9 , wherein
 the sensing unit ( 600 ) includes a position sensing means ( 620 ) for sensing positions of the propulsion parts, and   the control unit ( 322 ) obtains at least one or more position values of the propulsion parts through the position sensing means, and drives the repositioning parts by generating control signals for driving the repositioning parts when the position values obtained through the position sensing means are out of a preset position value range.