EP4390078B1 - Schiffsantriebsvorrichtung und aussenbordmotor - Google Patents

Schiffsantriebsvorrichtung und aussenbordmotor

Info

Publication number
EP4390078B1
EP4390078B1 EP23202931.4A EP23202931A EP4390078B1 EP 4390078 B1 EP4390078 B1 EP 4390078B1 EP 23202931 A EP23202931 A EP 23202931A EP 4390078 B1 EP4390078 B1 EP 4390078B1
Authority
EP
European Patent Office
Prior art keywords
pump
cooling water
shaft
propulsion device
boat propulsion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP23202931.4A
Other languages
English (en)
French (fr)
Other versions
EP4390078A2 (de
EP4390078A3 (de
Inventor
Yoshihiko Okabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Publication of EP4390078A2 publication Critical patent/EP4390078A2/de
Publication of EP4390078A3 publication Critical patent/EP4390078A3/de
Application granted granted Critical
Publication of EP4390078B1 publication Critical patent/EP4390078B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • F01P3/202—Cooling circuits not specific to a single part of engine or machine for outboard marine engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/28—Arrangements, apparatus and methods for handling cooling-water in outboard drives, e.g. cooling-water intakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/28—Arrangements, apparatus and methods for handling cooling-water in outboard drives, e.g. cooling-water intakes
    • B63H20/285—Cooling-water intakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/06—Cleaning; Combating corrosion
    • F01P2011/061—Cleaning or combating corrosion using filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2050/00—Applications
    • F01P2050/02—Marine engines
    • F01P2050/04—Marine engines using direct cooling

Definitions

  • the present invention relates to a boat propulsion device according to the preamble of the independent claim 1 and an outboard motor with a boat propulsion device.
  • a boat propulsion device can be taken from the prior art document US 2010/112877 A1 .
  • US2020/309015A1 discloses a known boat propulsion device comprising a cooling water inlet filter.
  • outboard motors are equipped with a water pump for pumping cooling water to cool the engine.
  • the water pump consists of an impeller or the like attached to a drive shaft. When the engine is driven, the impeller rotates together with the rotation of the drive shaft, and cooling water is pumped into the engine (see JP 2015-145137 A ).
  • An outboard motor is an outboard motor to be mounted on a hull, the outboard motor including: a cooling water flow path having an intake port for taking in cooling water from the outside and through which cooling water flows; and a water pump including an impeller and a pump shaft rotating together with the impeller to pump the cooling water into the cooling water flow path, wherein an inlet channel of the cooling water flow path from the intake port to the water pump extends along the rotation axis of the pump shaft in front of the water pump, and a filter member that allows the passage of the cooling water and inhibits entry of foreign objects is placed inside the inlet channel.
  • the cooling water taken from outside flows from the front to the impeller attached to the pump shaft so that the cooling water can be pumped efficiently.
  • This configuration also suppresses damage to the water pump caused by foreign objects colliding with the water pump.
  • the outboard motor may further include a drive unit and a drive shaft rotationally driven by the drive unit.
  • the drive shaft may be rotatable in both a forward direction (first rotation direction) and a reverse direction (second rotation direction), which is opposite to the forward direction, and the water pump may be a non-volumetric pump.
  • the drive shaft which can rotate in both forward and reverse directions, eliminates the need for a clutch mechanism such as a dog clutch, thereby providing a relatively large space around the propeller shaft.
  • This space can be used to accommodate the water pump, eliminating the need for a larger outboard motor and optimizing the arrangement of the components necessary to transport cooling water.
  • the non-volumetric pump since the non-volumetric pump has no restriction on the direction of rotation, it is suitable as a pump connected to a drive shaft that can rotate in both the forward and reverse directions.
  • the drive unit may be an electric motor driven by electricity supplied from a power source.
  • the water pump may be located on the rotation axis of the propeller shaft.
  • This configuration allows the water pump to be positioned without protruding sideways from the rotation axis of the propeller shaft, thereby avoiding a reduction in the propulsive force of the hull.
  • the filter member may be made of resin.
  • the filter member may be made of glass fiber reinforced plastic.
  • the filter member compared to the case where the filter member is made of resin that does not contain glass fibers, the filter member can be made stronger, and thus the filter member can be suppressed from being damaged by collisions with foreign objects while cruising, collisions with a shore while anchoring, and the like.
  • the holding member of the filter member that is in contact with the member constituting the inlet channel is made of resin, it is possible to suppress the filter member from corroding and adhering to the member constituting the inlet channel.
  • the filter body is made of metal, the filter portion can be made stronger compared to the case where the whole of the filter member is made of resin, and thus the filter portion can be suppressed from being damaged by collisions with foreign objects while cruising, collisions with a shore while anchoring, and the like.
  • the outboard motor 100 is attached to the transom 14 located at the rear (stern) of the hull 10.
  • the outboard motor 100 has an outboard motor main body 110 and a suspension device 150.
  • the outboard motor main body 110 includes a cowl 114, a casing 116, an electric motor 120, a drive shaft 130, a propeller 141, a propeller shaft 140, a cooling water flow path 200, a water pump 210, a first gear mechanism 180, a second gear mechanism 190, and an inlet 310 (an example of the filter member).
  • the cowl 114 is a housing located on top of the outboard motor main body 110.
  • the casing 116 includes an upper case 116a and a lower case 116b, as shown in FIG. 2 .
  • the upper case 116a is a housing located below the cowl 114.
  • the lower case 116b is a housing located below the upper case 116a.
  • the electric motor 120 is driven by electric power supplied from a battery (power source).
  • the electric motor 120 includes a rotor including a permanent magnet, a stator including a coil to which the battery power is supplied, and a motor housing that houses the rotor and stator.
  • the electric motor 120 is located inside the cowl 114.
  • the battery may be located inside the cowl 114 or inside the hull 10.
  • the drive shaft 130 is a rod-shaped member extending downward from the electric motor 120 and housed within the casing 116, as shown in FIG. 2 .
  • the drive shaft 130 is arranged in an attitude in which its rotation axis Ad extends in the upper-lower direction.
  • the propeller 141 is a rotating body having a plurality of blades.
  • the propeller 141 generates thrust by rotation.
  • the propeller shaft 140 is a rod-shaped member and extends in the front-rear direction inside the lower case 116b, as shown in FIGS. 2 , 3 , and 4 .
  • the propeller shaft 140 is rotatably supported by the lower case 116b via a bearing 142.
  • the rear end of the propeller shaft 140 protrudes rearwardly from the lower case 116b, and the propeller 141 is attached to this rear end. As the propeller shaft 140 rotates around the rotation axis Apr, the propeller 141 also rotates.
  • the cooling water flow path 200 is located inside the outboard motor main body 110.
  • the cooling water flow path 200 is a channel through which cooling water (seawater, lake water, and river water, among others) taken from outside the outboard motor 100 flows.
  • the cooling water flow path 200 has an intake port 201 that opens on the outer surface of the lower case 116b for taking cooling water into the interior and a drain port 202 that also opens on the outer surface of the lower case 116b for discharging cooling water to the exterior; the cooling water flow path 200 extends from the intake port 201 through the periphery of the electric motor 120 to the drain port 202.
  • the intake port 201 is located below the waterline when the boat 1 is cruising, i.e., when the outboard motor 100 is in the reference attitude.
  • the intake port 201 is open at the front end of the lower case 116b.
  • a portion of the cooling water flow path 200 is a pump chamber 203.
  • the pump chamber 203 is located in front of the gear chamber 118 in the lower case 116b and is separated from the gear chamber 118 by a partition member 220.
  • the partition member 220 has a shaft hole 221 that is connected to the pump chamber 203 and the gear chamber 118.
  • the water pump 210 is a non-volumetric pump having an impeller 211 and a pump shaft 212 that rotates together with the impeller 211, as shown in FIG. 4 .
  • a centrifugal pump is exemplified as the water pump 210.
  • the impeller 211 is a rotating body having a plurality of blades and is located inside the pump chamber 203.
  • the pump shaft 212 is a rod-shaped member and extends in a front-rear direction.
  • the pump shaft 212 is inserted into the shaft hole 221 and is supported by the partition member 220 in a rotatable manner via a bearing 213.
  • the rotation axis Apn of the pump shaft 212 coincides with the rotation axis Apr of the propeller shaft 140.
  • the front end of the pump shaft 212 is located inside the pump chamber 203, where the impeller 211 is mounted.
  • the water pump 210 (specifically, the pump shaft 212 and impeller 211) is located on the rotation axis Apr of the propeller shaft 140.
  • the impeller 211 also rotates.
  • the rear end of the pump shaft 212 is located inside the gear chamber 118.
  • a plurality of seal members 230 are arranged on the outer surface of the pump shaft 212 to fill the gap between the inner surface of the shaft hole 221 and the pump shaft 212.
  • Each seal member 230 is circular in shape, is composed of a material such as rubber having rubber elasticity, and encircles the pump shaft 212 all the way around.
  • the plurality of seal members 230 are arranged in line along the rotation axis Apn of the pump shaft 212. These seal members 230 prevent cooling water flowing into the pump chamber 203 from entering the gear chamber 118 through the gap between the inner circumferential surface of the shaft hole 221 and the pump shaft 212.
  • the portion of the cooling water flow path 200 from the intake port 201 to the water pump 210 i.e., the portion located between the intake port 201 and the pump chamber 203 (inlet channel 204), is located in front of the water pump 210 and extends along the rotation axis Apn of the pump shaft 212, as shown in FIG. 4 .
  • one portion of the inlet channel 204 adjacent to the intake port 201 has a larger inner diameter than the remaining portion adjacent to the pump chamber 203 (constant-diameter channel 206).
  • a member e.g., a pipe
  • a first stepped surface 207 is provided, which connects the inner surface of the enlarged-diameter channel 205 to the inner surface of the constant-diameter channel 206.
  • the first stepped surface 207 is arranged to face toward the intake port 201 and is perpendicular to the rotation axis Apn of the pump shaft 212.
  • a threaded groove for fixing the inlet 310 is formed on the inner surface of the constant-diameter channel 206.
  • the first gear mechanism 180 is a mechanism for transmitting the rotation of the drive shaft 130 to the propeller shaft 140
  • the second gear mechanism 190 is a mechanism for transmitting the rotation of the drive shaft 130 to the pump shaft 212.
  • the first gear mechanism 180 and the second gear mechanism 190 have different gear ratios.
  • the first gear mechanism 180 has a first gear 181 and a second gear 182, as shown in FIG. 4 .
  • the first gear 181 is coaxially mounted to the main shaft 131 of the drive shaft 130 (more specifically, the reduced-diameter shaft 131B) and rotates together with the drive shaft 130.
  • the second gear 182 is coaxially mounted to the propeller shaft 140 and rotates together with the propeller shaft 140.
  • the second gear 182 meshes with the first gear 181.
  • the first gear 181 and the second gear 182 are, e.g., bevel gears.
  • the second gear mechanism 190 has a third gear 191 and a fourth gear 192, as shown in FIG. 4 .
  • the third gear 191 is a gear that is coaxially mounted to the extension shaft 132 of the drive shaft 130 and rotates together with the drive shaft 130.
  • the third gear 191 has a smaller outer diameter than the first gear 181 and is located farther from the electric motor 120 than the first gear 181.
  • the fourth gear 192 is coaxially mounted to the pump shaft 212 and rotates together with the pump shaft 212.
  • the fourth gear 192 meshes with the third gear 191.
  • the third gear 191 and the fourth gear 192 are, e.g., bevel gears.
  • the first gear mechanism 180 and the second gear mechanism 190 are located inside the gear chamber 118.
  • the four gears 181, 182, 191, and 192 are lubricated by oil provided inside the gear chamber 118.
  • the inlet 310 is a member that is located inside the inlet channel 204 and prevents foreign objects contained in the cooling water taken from the intake port 201 from entering the cooling water flow path 200 and has a filter plate 311 and a mounting cylinder 315, as shown in FIGS. 5 and 6 .
  • the filter plate 311 is disc-shaped and has a number of passage holes 312.
  • the passage holes 312 are holes that penetrate from one side to the other and allow the passage of cooling water.
  • the size of each passage hole 312 is sufficient to allow the cooling water to pass smoothly but to prevent the entering of foreign objects of a size that could clog the cooling water flow path 200, such as algae or pebbles, e.g., a hole having an inner diameter of 2.5 mm.
  • the mounting cylinder 315 is a cylindrical portion extending from one side of the filter plate 311 (right side of FIG. 5 ) and has an outer diameter smaller than the outer diameter of the filter plate 311.
  • the outer surface of the mounting cylinder 315 has threads corresponding to the grooves threaded on the inner surface of the constant-diameter channel 206.
  • the recess defined by the attachment/detachment ring 313 and filter plate 311 has a hexagonal inner circumferential edge and is an attachment/detachment recess 314 that fits a hexagonal wrench.
  • the filter plate 311 When the inlet 310 is located within the inlet channel 204, the filter plate 311 is disposed near the intake port 201 and perpendicular to the rotation axis Apn of the pump shaft 212 to separate the interior space of the inlet channel 204 from the exterior space. The outer circumferential edge of the filter plate 311 abuts the first stepped surface 207 to position the inlet 310.
  • the mounting cylinder 315 is located on the rotation axis Apn of the pump shaft 212. Cooling water flows into the pump chamber 203 through the passage hole 312 and the interior of the mounting cylinder 315.
  • the inlet 310 of this embodiment is made of resin, adhesion of the inlet 310 to the pipe constituting the inlet channel 204 due to corrosion can be suppressed compared to the case where the inlet 310 is made of metal.
  • the material for the inlet 310 may include nylon and polyacetal.
  • the suspension device 150 is a device for suspending the outboard motor main body 110 on the hull 10.
  • the suspension device 150 includes a pair of left and right clamp brackets 152, a tilt shaft 160, and a connection bracket 156, as shown in FIG. 2 .
  • the pair of left and right clamp brackets 152 are disposed behind the hull 10 in a state separated from each other in the left-right direction and are fixed to the transom 14 of the hull 10 by using, e.g., bolts.
  • Each clamp bracket 152 has a cylindrical supporting portion 152a provided with a through-hole extending in the left-right directions.
  • the tilt shaft 160 is a rod-shaped member.
  • the tilt shaft 160 is rotatably supported in the through-hole of the supporting portion 152a of the clamp bracket 152.
  • the tilt axis At which is the center line of the tilt shaft 160, constitutes an axis in the horizontal direction (left-right direction) in the tilting action of the outboard motor 100.
  • connection bracket 156 is disposed so as to be sandwiched between the pair of clamp brackets 152 and is supported by the supporting portion 152a of the clamp bracket 152 via the tilt shaft 160 in such a manner that the connection bracket 156 can rotate around the tilt axis At.
  • the connection bracket 156 is fixed to the outboard motor main body 110.
  • the connection bracket 156 is rotationally driven around the tilt axis At with respect to the clamp bracket 152 by a tilt device (not shown) including an actuator such as, e.g., a hydraulic cylinder.
  • the outboard motor main body 110 fixed to the connection bracket 156 also rotates about the tilt axis At. This achieves the tilting action of rotating the outboard motor main body 110 in the upper-lower direction with respect to the hull 10.
  • the outboard motor 100 can change the angle around the tilt axis At of the outboard motor main body 110 in the range from the tilt-down state in which the propeller 141 is located under the waterline (the state in which the outboard motor 100 is in the reference attitude: the state shown in FIG. 1 ) to the tilt-up state in which the propeller 141 is above the waterline.
  • Trimming action to adjust the attitude of the boat 1 during cruising can also be performed by adjusting the angle around the tilt axis At of the outboard motor main body 110.
  • the outboard motor 100 When the boat 1 is cruising, the outboard motor 100 is placed in the tilt-down state, and the lower case 116b and the propeller 141 are positioned below the waterline.
  • the intake port 201, inlet channel 204, pump chamber 203, and water pump 210 located inside the lower case 116b are also below the waterline, and cooling water flows into the pump chamber 203 from outside through the intake port 201 and inlet channel 204.
  • the inlet 310 which is located in the inlet channel 204, prevents the entering of foreign objects of a size that could clog the cooling water flow path 200, such as algae and pebbles.
  • the drive shaft 130 rotates around the rotation axis Ad by the rotational driving force of the electric motor 120.
  • the rotation of the drive shaft 130 is transmitted to the propeller shaft 140 via the first gear mechanism 180.
  • the first gear mechanism 180 transmits the forward rotation of the drive shaft 130 to the propeller shaft 140
  • the propeller 141 rotating together with the propeller shaft 140 generates thrust in the forward direction.
  • the first gear mechanism 180 transmits the reverse rotation of the drive shaft 130 to the propeller shaft 140
  • the propeller 141 rotating together with the propeller shaft 140 generates thrust in the rearward direction.
  • the rotation of the drive shaft 130 is transmitted to the pump shaft 212 via the second gear mechanism 190, and the impeller 211 rotates together with the pump shaft 212.
  • Cooling water taken in from the intake port 201 is pumped through the cooling water flow path 200 by centrifugal force generated by the rotation of the impeller 211, and is supplied around the electric motor 120 to cool the electric motor 120.
  • the cooling water may also cool the battery, inverter, and reduction gears, among others, located inside the outboard motor main body 110. After being used for cooling, the cooling water is discharged to the outside through the drain port 202.
  • the intake port 201 and the inlet channel 204 are located on the rotation axis Apn of the pump shaft 212 and in front (bow side) of the water pump 210, so that when the boat 1 moves forward, the cooling water flows through the intake port 201 and the inlet channel 204 from the front to the impeller 211.
  • This allows the cooling water to be pumped efficiently, especially when the boat 1 is moving forward.
  • the inlet 310 is arranged in the inlet channel 204 in this configuration. The inlet 310 prevents foreign objects from entering the cooling water flow path 200 and suppresses damage to the impeller 211.
  • the pump shaft 212 also rotates around the rotation axis Apn in both the direction of rotation associated with the forward direction of the drive shaft 130 and the direction of rotation associated with the reverse direction of the drive shaft 130; the water pump 210, which is a non-volumetric pump with no restriction on the direction of rotation, operates normally no matter which direction the drive shaft 130 rotates.
  • the outboard motor 100 of this embodiment is an outboard motor 100 to be mounted on the hull 10 and includes a cooling water flow path 200 having an intake port 201 for taking in cooling water from the outside and through which cooling water flows; and a water pump 210 including an impeller 211 and a pump shaft 212 rotating together with the impeller 211 to pump the cooling water into the cooling water flow path 200, wherein the inlet channel 204 of the cooling water flow path 200 from the intake port 201 to the water pump 210 is located in front of the water pump 210 and extends along the rotation axis Apn of the pump shaft 212, and the inlet 310 that allows the passage of the cooling water and inhibits entry of foreign objects is placed inside the inlet channel 204.
  • the cooling water taken from outside flows from the front to the impeller 211 attached to the pump shaft 212 so that the cooling water can be pumped efficiently.
  • This configuration also suppresses damage to the water pump 210 caused by foreign objects colliding with the water pump 210.
  • the outboard motor 100 further includes the electric motor 120, the drive shaft 130 rotationally driven by the electric motor 120, the propeller 141, and the propeller shaft 140 rotating together with the propeller 141.
  • the drive shaft 130 is capable of rotating in both the forward direction and the reverse direction, which is opposite to the forward direction, and the water pump 210 is a non-volumetric pump.
  • the drive shaft 130 which can rotate in both forward and reverse directions, eliminates the need for a clutch mechanism such as a dog clutch, thereby providing a relatively large space around the propeller shaft 140.
  • This space can be used to accommodate the water pump 210, avoiding increasing the size of the outboard motor 100 and optimizing the arrangement of the components necessary to transport cooling water.
  • the non-volumetric water pump 210 since the non-volumetric water pump 210 has no restrictions on the direction of rotation, it is suitable as a pump, the rotation of which is transmitted from the drive shaft 130 that can rotate in both forward and reverse directions.
  • the water pump 210 is located on the rotation axis Apr of the propeller shaft 140.
  • This configuration allows the water pump 210 to be positioned without protruding sideways from the rotation axis Apr of the propeller shaft 140, thereby avoiding a reduction in the propulsive force of the hull 10.
  • the inlet 310 is made of resin, compared to the case where the inlet 310 is made of metal, adhesion of the inlet 310 to the member constituting the inlet channel 204 due to corrosion can be suppressed.
  • Embodiment 2 will now be explained with reference to FIGS. 7 and 8 .
  • the material and shape of the inlet 320 are different from those of Embodiment 1.
  • the same configuration as in Embodiment 1 will be marked with the same symbol, and the explanation will be omitted.
  • the inlet 320 is a member that is located inside the inlet channel 204 and prevents foreign objects contained in the cooling water taken from intake port 201 from entering the cooling water flow path 200, as in Embodiment 1.
  • the inlet 320 has a filter plate 321 and a mounting cylinder 315.
  • the filter plate 321 is disc-shaped with an outer diameter larger than that of the mounting cylinder 315 and has a number of passage holes 322.
  • the passage holes 322 are holes that penetrate from one side of the filter plate 321 to the other side and allow the passage of cooling water.
  • the mounting cylinder 315 is a cylindrical portion extending from one side of the filter plate 311 (right side in FIG. 7 ) and having threads formed on the outer surface.
  • the filter plate 321 When the inlet 320 is attached to the inside of the inlet channel 204, as in Embodiment 1, the filter plate 321 is disposed near the intake port 201 and perpendicular to the rotation axis Apn of the pump shaft 212 to separate the interior space of the inlet channel 204 from the exterior space. The outer circumferential edge of the filter plate 321 abuts the first stepped surface 207 to position the inlet 320.
  • the cooling water can flow into the interior of the pump chamber 203 through the passage hole 322 and the mounting cylinder 315.
  • the mounting cylinder 315 is located on the rotation axis Apn of the pump shaft 212.
  • the inlet 320 of this embodiment is made of glass fiber reinforced plastic, adhesion of the inlet 320 to the pipe constituting the inlet channel 204 due to corrosion can be suppressed compared to the case where the inlet 320 is made of metal.
  • the glass fiber reinforced plastic is stronger than resin that does not contain glass fibers, the inlet 320 can be suppressed from being damaged by collisions with foreign objects while cruising, collisions with a shore while anchoring, and the like.
  • Embodiment 3 will be described with reference to FIGS. 9 and 10 .
  • This embodiment differs from Embodiment 1 in that inlet 330 (an example of the filter member) is composed of two members, a filter body 340 and a holding member 350.
  • inlet 330 an example of the filter member
  • inlet 330 is composed of two members, a filter body 340 and a holding member 350.
  • the same configuration as in Embodiment 1 will be marked with the same symbol, and the explanation will be omitted.
  • the inlet 330 is a member that is located inside the inlet channel 204 and prevents foreign objects contained in the cooling water taken from intake port 201 from entering the cooling water flow path 200, as in Embodiment 1.
  • the inlet 330 has a filter body 340 and a holding member 350 that holds the filter body 340 and is fixed to the interior of the inlet channel 204.
  • the filter body 340 is a metal plate having a hexagonal outline and a curved shape that matches the curved shape of the front end surface of the lower case 116b.
  • the filter body 340 has a number of passage holes 341.
  • the passage holes 341 are holes that penetrate the filter body 340 from one surface to the other surface and allow the passage of cooling water.
  • Two parallel sides of the six sides constituting the outer circumference of the filter body 340 respectively have a locking projection 343 projecting therefrom.
  • the two attachment/detachment grooves 342 are arranged to face each other.
  • the holding member 350 is made of resin, is cylindrical in shape as a whole, and has through holes 351 open at both ends. At one end of the holding member 350, an outwardly protruding flange 352 is provided.
  • the outer surface of the holding member 350 has threads corresponding to the grooves threaded on the inner surface of the constant-diameter channel 206, except for the portion where the flange 352 is provided.
  • a portion of the through hole 351 on the flange 352 side has a hexagonal inner circumferential edge and is a filter receiving hole 351A for receiving the filter body 340.
  • Two parallel sides of the six sides constituting the inner circumferential edge of the filter receiving hole 351A are respectively provided with a locking groove 353 which is recessed outwardly to receive the locking projection 343.
  • the holding member 350 is disposed on the rotation axis Apn of the pump shaft 212.
  • the filter body 340 is disposed near the intake port 201 and perpendicular to the rotation axis Apn of the pump shaft 212 to separate the interior space of the inlet channel 204 from the exterior space.
  • the flange 352 abuts the first stepped surface 207 to position the inlet 330.
  • the cooling water can flow into the interior of the pump chamber 203 through the passage holes 341 and the through hole 351.
  • the inlet 330 is attached to the interior of the inlet channel 204 by first inserting a hexagonal wrench into the filter receiving hole 351A to rotate the holding member 350 around the rotation axis Apn, thereby screwing the holding member 350 to the pipe constituting the inlet channel 204.
  • the filter body 340 is fitted into the interior of the filter receiving hole 351A.
  • the filter body 340 is secured to the interior of the filter receiving hole 351A by the locking projection 343 inserted into the locking groove 353.
  • the inlet 330 is detached from the inlet channel 204 by first inserting a removal jig into the interior of the attachment/detachment groove 342, hooking the jig onto the filter body 340 and then pulling the jig to pull the filter body 340 out of the filter receiving hole 351A.
  • the holding member 350 is removed from the pipe constituting the inlet channel 204 by inserting a hexagonal wrench inside the filter receiving hole 351A and rotating the holding member 350 around the rotation axis Apn.
  • the holding member 350 of the inlet 330 that contacts the pipe constituting the inlet channel 204 is made of resin, adhesion of the holding member 350 to the pipe due to corrosion can be suppressed compared to the case where the holding member 350 is made of metal.
  • the material for the holding member 350 may include nylon and polyacetal.
  • the filter body 340 is made of metal, the filter body 340 can be made stronger compared to the case where the whole of the inlet is made of resin, and thus the filter body 340 can be suppressed from being damaged by collisions with foreign objects while cruising, collisions with a shore while anchoring, and the like.
  • the material of the filter body 340 is preferably a metal that is resistant to corrosion, e.g., aluminum, which forms an oxide film on its surface, is suitable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Cooling System (AREA)

Claims (11)

  1. Eine Bootsantriebsvorrichtung, die zur Anbringung an einem Rumpf (10) konfiguriert ist, wobei die Bootsantriebsvorrichtung umfasst:
    einen Propeller (141); und
    eine Propellerwelle (140), die so konfiguriert ist, dass sie sich zusammen mit dem Propeller (141) dreht,
    einen Kühlwasserströmungsweg (200), der eine Einlassöffnung (201) hat zum Ansaugen von Kühlwasser von außen und so konfiguriert ist, dass Kühlwasser hindurchfließen kann; und
    eine Wasserpumpe (210), die ein Laufrad (211) und eine Pumpenwelle (212 enthält, die so konfiguriert ist, dass sie sich zusammen mit dem Laufrad (211) um eine Drehachse (Apn) dreht, um das Kühlwasser in den Kühlwasserströmungsweg (200) zu pumpen zu pumpen, wobei die Wasserpumpe (210) in Bezug auf die Drehachse (Apn) der Pumpenwelle (212) zwischen der Einlassöffnung (201) und dem Propeller (141) angeordnet ist, gekennzeichnet durch
    ein Filterelement (310, 320, 330), das den Durchgang des Kühlwassers ermöglicht und so konfiguriert ist, dass es das Eindringen von Fremdkörpern verhindert, an der Einlassöffnung (201) angeordnet ist, wobei
    das Filterelement (310, 320, 330) auf der Drehachse (Apn) der Pumpenwelle (212) angeordnet ist.
  2. Die Bootsantriebsvorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass sich ein Einlasskanal (204) des Kühlwasserströmungswegs (200) von der Einlassöffnung (201) zur Wasserpumpe (210) entlang der Drehachse (Apn) der Pumpenwelle (212) erstreckt und
    das Filterelement (310, 320, 330) innerhalb des Einlasskanals (204) angeordnet ist.
  3. Die Bootsantriebsvorrichtung gemäß Anspruch 1 oder 2, gekennzeichnet durch
    eine Antriebseinheit (120);
    eine Antriebswelle (130), die so konfiguriert ist, dass sie von der Antriebseinheit (120) drehangetrieben wird, wobei die Antriebswelle (130) sowohl in einer ersten Drehrichtung als auch in einer zweiten Drehrichtung, die der ersten Drehrichtung entgegengesetzt ist, drehbar ist, und
    die Wasserpumpe (210) eine nicht-volumetrische Pumpe ist.
  4. Die Bootsantriebsvorrichtung gemäß Anspruch 3, dadurch gekennzeichnet, dass die Antriebseinheit ein Elektromotor (120) ist, der so konfiguriert ist, dass er durch von einer Stromquelle zuzuführende elektrische Energie angetrieben wird.
  5. Die Bootsantriebsvorrichtung gemäß Anspruch 3 oder 4, dadurch gekennzeichnet, dass sich die Wasserpumpe (210) auf einer Drehachse (Apr) der Propellerwelle (140) befindet.
  6. Die Bootsantriebsvorrichtung gemäß irgendeinem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Wasserpumpe (210) eine Zentrifugalpumpe ist.
  7. Die Bootsantriebsvorrichtung gemäß irgendeinem Anspruch 1 bis 6, dadurch gekennzeichnet, dass das Filterelement (310) aus Kunststoff besteht.
  8. Die Bootsantriebsvorrichtung gemäß irgendeinem Anspruch 1 bis 6, dadurch gekennzeichnet, dass das Filterelement (320) aus glasfaserverstärktem Kunststoff besteht.
  9. Die Bootsantriebsvorrichtung gemäß irgendeinem Anspruch 1 bis 6, dadurch gekennzeichnet, dass das Filterelement (330) umfasst:
    ein Halteelement (350) , das eine Durchgangsbohrung (351) hat und innerhalb des Einlasskanals (204) befestigt ist; und
    einem Filterkörper (340), der in dem Durchgangsloch (351) gehalten wird, das den Durchfluss des Kühlwassers ermöglicht und so konfiguriert ist, dass es das Eindringen von Fremdkörpern verhindert, wobei
    das Halteelement (350) aus Kunststoff besteht und
    der Filterkörper (340) aus Metall besteht.
  10. Ein Außenbordmotor (100), der so konfiguriert ist, dass er an einem Heckspiegel (14) angebracht werden kann, der sich am hinteren Ende des Rumpfes (10) befindet, wobei der Außenbordmotor (100) eine Bootsantriebsvorrichtung gemäß irgendeinem Anspruch 1 bis 9 umfasst.
  11. Ein Boot (1) mit einem Rumpf (10) und einem Außenbordmotor (100) gemäß Anspruch 10, der an dem Heckspiegel (14) angebracht ist, der sich am hinteren Ende des Rumpfes (10) befindet.
EP23202931.4A 2022-12-23 2023-10-11 Schiffsantriebsvorrichtung und aussenbordmotor Active EP4390078B1 (de)

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JP2022206223A JP2024090362A (ja) 2022-12-23 2022-12-23 船外機、および船舶用推進機

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EP4390078A3 EP4390078A3 (de) 2024-08-28
EP4390078B1 true EP4390078B1 (de) 2026-02-11

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4442559A4 (de) * 2023-02-22 2025-06-25 Aiwin Co., Ltd. Antriebsvorrichtung für ein flügelrad für eine wärmepumpe eines aussenbordmotors
US20250333152A1 (en) * 2024-04-30 2025-10-30 Vision Marine Technologies Controlling a cooling system water intake pump of an electric marine vessel

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Publication number Priority date Publication date Assignee Title
US2153626A (en) * 1937-05-10 1939-04-11 B M Kissel Outboard motor
US3025824A (en) * 1959-10-28 1962-03-20 Mcculloch Corp Outboard motor water pump arrangement
US3367116A (en) * 1965-12-13 1968-02-06 Richard C. Stallman Intake grill for water jet pump
US4832635A (en) * 1988-02-26 1989-05-23 Brunswick Corporation Nose construction for the gear case of a marine drive
JP3537547B2 (ja) * 1995-06-23 2004-06-14 ヤマハマリン株式会社 船舶推進機の冷却水通路構造
US6146223A (en) * 1999-04-19 2000-11-14 Brunswick Corporation Marine propulsion unit with water inlets in all quadrants of the front portion of its torpedo-shape gearcase
US8333629B2 (en) * 2008-10-30 2012-12-18 Brp Us Inc. System and method for cooling a marine outboard engine
ITRM20120577A1 (it) * 2011-11-22 2013-05-23 Suzuki Motor Corp Struttura di passaggio di acqua di raffreddamento di un motore fuoribordo.
JP6282872B2 (ja) 2014-01-31 2018-02-21 本田技研工業株式会社 船外機
JP2017206184A (ja) * 2016-05-20 2017-11-24 スズキ株式会社 船外機
WO2020129133A1 (ja) * 2018-12-17 2020-06-25 本田技研工業株式会社 船外機
JP7293800B2 (ja) * 2019-03-28 2023-06-20 スズキ株式会社 船舶推進装置用動力源の冷却装置
JP2021030930A (ja) * 2019-08-27 2021-03-01 ヤマハ発動機株式会社 船外機および船舶
JP2022117651A (ja) * 2021-02-01 2022-08-12 本田技研工業株式会社 船外機

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JP2024090362A (ja) 2024-07-04
US20240208629A1 (en) 2024-06-27
EP4390078A2 (de) 2024-06-26
EP4390078A3 (de) 2024-08-28

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