JPH09308196A - Generator structure for propelling apparatus of ship - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a generator and an AC machine free from the possibility of a fire or an explosion in a propelling apparatus for a ship. SOLUTION: This generator structure has a first assembly 33 having a plurality of pole shoes 51 fixed at intervals in the direction of stretching into the shape of an arc and stationary field windings 61 provided at their radial- direction insides, on one side of an engine block and a crank shaft, and a second assembly 35 fixed on the other side. The assembly 35 has magnetic flux receiving sections 91, 101 stretching so as to be able to receive the magnetic fluxes of the field windings, a plurality of internal magnetic flux surface sections 93 provided stretching from the magnetic flux receiving parts movably near to the internal parts of the magnetic pole shoes adjoining the engine block, and a plurality of external magnetic flux surface sections 103 provided at intervals in the direction of stretching into the shape of an arc stretching from the magnetic flux receiving parts 101 movably being separated from the engine block near to the external parts of the nagnetic pole shoes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to propulsion devices for ships such as outboard motors, and is an alternator (alternator or alternator) or generator particularly adapted for use in such propulsion devices for ships. Regarding the structure.

[0002]

2. Description of the Prior Art It is not desirable to use a generator or alternator (alternator or alternator) with a commutator or brush in a ship propulsion device. This is because the arcing of the brush can result in fire or explosion.

See the following US patents:

US Pat. No. 2,802,959 (1957)
Issued August 13, 2012) US Patent 3,134,039 (issued May 19, 1964) US Patent 3,215,877 (issued November 2, 1965) US Patent 3,283,191 ( Issued Nov. 1, 1966) US Pat. No. 4,307,309 (Dec. 22, 1981)
US Patent No. 4,588,911 (issued May 13, 1986) US Patent No. 4,611,139 (issued September 9, 1986) US Patent No. 5,021,696 (June 1991) Issued 4th) US Patent No. 5,160,864 (issued November 3, 1992)

[0005]

SUMMARY OF THE INVENTION The present invention is an internal combustion engine, the internal combustion engine being an engine block and a crankshaft mounted by the engine block so as to be rotatable about the axis of the engine block. And a first assembly fixed to one of the engine block and the crankshaft, the first assembly including a plurality of magnetic pole pieces fixed at intervals in an arc extending direction. The magnetic pole pieces each have an inner portion provided adjacent to the engine block, an outer portion provided away from the engine block, and between the inner portion and the outer portion. Pole piece windings fixed to the pole pieces, respectively, and the first assembly has fixed field windings. The field winding is provided radially inward of the magnetic pole piece, and the internal combustion engine further includes a second assembly fixed to the other of the engine block and the crankshaft. And wherein the second assembly has a magnetic flux receiving portion, the magnetic flux receiving portion extending to receive magnetic flux with respect to the field winding, and The assembly of 2 has a plurality of inner magnetic flux surface portions provided at intervals in a direction extending in an arc shape, the inner magnetic flux surface portion extending from the magnetic flux receiving portion, and the inner magnetic flux surface portion, Further, it is provided adjacent to the engine block so as to be able to move close to the inner portions of the plurality of magnetic pole pieces, and the second assembly is spaced apart in an arc extending direction. Open A plurality of outer magnetic flux surface portions, the outer magnetic flux surface portions extending from the magnetic flux receiving portion, the outer magnetic flux surface portions also being proximate to the outer portion of the plurality of pole pieces. It provides an internal combustion engine that is provided separately from the engine block so that the internal combustion engine can be moved.

The present invention is an internal combustion engine, the internal combustion engine comprising: an engine block; a crankshaft attached to the engine block so that the engine block can rotate about an axis; and the engine block. A first assembly fixed to one side of the crankshaft, the first assembly having a plurality of magnetic pole pieces fixed at intervals in an arc extending direction, The pole pieces are composed of an electrically conductive material, and the first assembly is
It has a fixed field winding, the field winding is provided radially inward with respect to the pole piece, and the internal combustion engine further includes the engine block and the crankshaft. A second assembly fixed to the other of the two, the second assembly having a magnetic flux receiving portion, the magnetic flux receiving portion being capable of receiving a magnetic flux with respect to the field winding. And a second assembly having a plurality of magnetic flux surface portions spaced apart in an arcuate direction, the magnetic flux surface portions extending from the magnetic flux receiving portion. , An internal combustion engine provided so as to be able to move close to the plurality of magnetic pole pieces.

The present invention is also an internal combustion engine, which comprises an engine block, a crankshaft attached to the engine block by the engine block so as to rotate about the axis, and the engine. A block and a first assembly secured to one of the crankshafts, the first assembly comprising:
Assembly has a plurality of pole pieces fixed at intervals in an arcuate direction, each pole piece having an inner portion adjacent to the engine block and the engine block. An outer portion provided apart from the magnetic pole piece winding fixed to the magnetic pole piece between the inner portion and the outer portion,
The first assembly has a fixed field winding, the field winding is provided radially inward of the pole piece, and the internal combustion engine further comprises A second assembly fixed to the other of the engine block and the crankshaft, the second assembly having a magnetic flux receiver, the magnetic flux receiver being the field winding. Extending to receive magnetic flux with respect to the line, and the second assembly has a plurality of inner magnetic flux surface portions spaced in an arc extending direction. An inner magnetic flux surface portion extends from the magnetic flux receiving portion, and the inner magnetic flux surface portion is also provided adjacent to the engine block so that the inner magnetic flux surface portion can move closer to the inner portion of the plurality of magnetic pole pieces. And, in addition, The second assembly has a plurality of outer magnetic flux surface portions provided at intervals in a direction extending in an arc shape, the outer magnetic flux surface portion extending from the magnetic flux receiving portion, the outer magnetic flux surface portion is Also, the present invention provides an internal combustion engine that is provided away from the engine block so that the magnetic pole pieces can move closer to the outer portions.

The present invention is also an internal combustion engine, wherein the internal combustion engine is fixed to the crankcase, a crankshaft mounted by the engine block so as to be rotatable about an axis, and the engine block. The fixing assembly includes a frame fixed to the engine block, and a plurality of magnetic pole pieces provided at intervals in an arc extending direction. Are arranged in a circular shape and are fixed to the frame, and extend substantially parallel to the axis of the crankshaft, and the magnetic pole pieces each have an inner end portion provided adjacent to the engine block, An outer end provided apart from the engine block and axially spaced from the inner end; A magnetic pole piece winding fixed to the magnetic pole piece between the magnetic pole piece and the outer end portion, and the fixing assembly includes a field winding provided radially inward of the magnetic pole piece. And a field winding, the field winding being provided away from the engine block and an inner end provided adjacent to the engine block, and being provided axially spaced from the inner end. An outer end, and an opening extending between the inner end and the outer end,
The internal combustion engine also includes a rotation assembly fixed to the crankshaft, the rotation assembly includes an inner rotor plate provided adjacent to the engine block, the inner rotor plate, The magnetic flux receiving portion provided in the opening of the field winding, and a plurality of first magnetic flux surface portions provided at intervals in a direction extending in an arc shape, the first magnetic flux surface portion, An outer side of the plurality of pole pieces proximate to the inner ends of the pole pieces, the rotating assembly also being spaced apart from the engine block and axially spaced from the inner rotor plate. A rotor plate is provided, and the outer rotor plate is spaced apart from a magnetic flux receiving portion provided in the opening of the field winding in an arc extending direction. And a plurality of second magnetic flux surface portions that are provided so as to provide an internal combustion engine that is provided in proximity to the outer end portions of the plurality of magnetic pole pieces. Is.

The present invention is also an internal combustion engine, wherein the internal combustion engine is fixed to the crankcase, a crankshaft mounted by an engine block so as to be rotatable about an axis, and the engine block. A fixed assembly, the fixed assembly being arranged in a circle and fixed to the engine block, spaced apart in an arc extending direction.
Five supports, which extend substantially parallel to the crankshaft axis, a mounting ring provided apart from the engine block and fixed to the plurality of supports, and an arc extending direction. 9 pole pieces provided at equal intervals to each other, the pole pieces being fixed in a circular arrangement between the mounting ring and the engine block, ,
The magnetic pole pieces extend substantially parallel to the crankshaft axis, and each of the magnetic pole pieces has an inner end portion provided adjacent to the engine block and an axial distance from the inner end portion. Open, provided with an outer end provided away from the engine block, and a plurality of pole piece windings respectively fixed to the pole pieces between the inner end and the outer end, The fixing assembly further includes a field winding fixed to at least one of the plurality of supports, the field winding being provided radially inward of the plurality of supports. The field winding also has an inner end provided adjacent to the engine block, and an outer end provided at a distance from the inner end in the axial direction and away from the engine block. , With the inner edge An opening extending between the outer end and the internal combustion engine, the internal combustion engine also includes a rotating assembly fixed to the crankshaft, the rotating assembly provided adjacent to the engine block. An inner magnetic flux plate, the inner magnetic flux plate including six first magnetic flux plates that are evenly spaced in the arc extending direction from the first portion provided in the opening of the field winding. Magnetic flux surface portions, and six magnetic flux surface portions provided in proximity to the inner end portions of the plurality of magnetic pole pieces, wherein the rotating assembly also extends axially from the inner magnetic flux plates. An outer magnetic flux plate is provided at a distance from the engine block, the outer magnetic flux plate being a first portion provided in the opening of the field winding. A first portion engaging with the first portion of the inner magnetic flux plate and six magnetic flux surface portions provided at equal intervals in a direction extending in an arc shape, And six rotating flux assemblies disposed proximate the outer end, wherein the rotating assembly also includes a first flux flow disposed between the inner and outer flux plates and the crankshaft. Provided is an internal combustion engine including a restriction member, a second magnetic flux flow restriction member provided between the inner magnetic flux plate and the engine block, and a ring gear fixed to the second rotor plate. It is a thing.

The present invention is also a combined flywheel and generator, the combined flywheel and generator comprising a first assembly that is fixable to one of an engine block and a crankshaft. The first assembly includes a support frame and a plurality of magnetic pole pieces provided at intervals in an arc extending direction, and the magnetic pole pieces are fixedly supported by the support frame. And the pole piece also has a first portion adjacent to the engine block and a second portion spaced from the engine block, the first assembly And a plurality of pole piece windings fixed to the pole pieces between the first portion and the second portion, and fixedly supported by the support frame. The field winding is provided radially inward with respect to the support frame, and the field winding also extends along the crankshaft axis. A second flywheel provided with an extending opening is also securable to the engine block and the other of the crankshaft.
And the second assembly comprises:
A core portion extending through the opening of the field winding, and a plurality of first magnetic flux surface portions provided at intervals in an arc extending direction, the magnetic flux extending from the core portion, and the plurality of magnetic poles. The plurality of first magnetic flux surface portions provided in the vicinity of the first portion of the piece and the plurality of second magnetic flux surface portions provided at intervals in the arc extending direction; And a plurality of second magnetic flux surface portions extending proximate to the second portions of the plurality of pole pieces, and a combined flywheel and generator. .

The present invention is a flywheel including a magnetic flux core assembly that can be fixed to a crankshaft, wherein the magnetic flux core assembly has a core portion extending through an opening of a fixed field winding and an arc shape. A plurality of first magnetic flux surface portions provided at intervals in the direction of extension to,
A plurality of first magnetic flux surface portions that extend from the core portion and can move in a state of being close to a plurality of magnetic pole pieces; and a plurality of second magnetic flux surface portions that are provided at intervals in the arc extending direction. And a flywheel including the plurality of second magnetic flux surface portions that extend from the core portion and can move in a state of being close to the plurality of magnetic pole pieces.

Other features and advantages of the invention will be apparent to those of ordinary skill in the art by reference to the description and drawings set forth in detail below, and the claims.

Before describing one embodiment of the present invention in detail, the present invention is limited to the detailed arrangement of components described in the following description and application to the detailed structure. It should be understood that not. The invention is capable of other embodiments and of being practiced and carried out in various ways. It is also to be understood that the terms and terms used herein are for explanation and should not be construed as limiting.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An outboard motor 11 is shown fragmentarily in the drawings. The outboard motor 11 includes an internal combustion engine 13. Internal combustion engine 13 includes an engine block or engine block assembly 15. Engine block or engine block assembly 15
Can include a cylinder block and a crankcase cover (not shown in detail), forming a crankcase 21 and supporting a crankshaft 23.
The crankshaft 23 is rotatably supported by the engine block assembly 15. A part of the crankshaft 23 extends inside the crankcase 21. The crankshaft 23 also has a portion or end 2
5 is provided. This portion or end 25 extends outside the engine block assembly 15.

Combined flywheel and generator 3
1 is provided in the internal combustion engine 13 (see especially FIGS. 2 and 3). Combined flywheel and generator 3
1 comprises a first assembly or fixing assembly 33. The first assembly or stationary assembly 33 is stationary fixed to the stationary engine block assembly 15 and forms an alternator, alternator or part of an alternator. The combined flywheel and generator 31 also comprises a second assembly or rotating assembly 35. The second assembly or rotating assembly 35 includes the crankshaft 2
It is fixed to the crankshaft 23 so that it can rotate together with 3, and forms an alternator, an alternator or part of an alternator and constitutes a flywheel.

The first or stationary assembly 33 comprises a support frame 41. Although other configurations can be adopted, in the disclosed configuration, the support frame 41 includes a plurality of members, that is, a plurality of rods, that is, a plurality of support bodies 43, which are provided at intervals in the arc extending direction. I have it. The plurality of supports 43 are arranged in a circle and are fixed to the engine block assembly 15. The plurality of support bodies 43 is the crankshaft 2
It extends substantially parallel to 3. Further, the support frame 41 also includes a mounting member 45. The mounting member 45, in the disclosed configuration, is ring-shaped and spaced apart from the engine block assembly 15 and suitably secured to the axially outer end of the support 43. More specifically, in the disclosed configuration, the five rods, that is, the five supports 43 are non-uniformly spaced in the arc extending direction. Five rods, or five supports 43, at their inner ends,
It preferably extends into a suitable receptacle (in other words, socket) or receptacle (in other words, pocket) 47 formed in the engine block assembly 15.

The first or stationary assembly 33 also includes a plurality of pole pieces 51 spaced apart in the arcuate direction. The pole piece 51 is made of a magnetic flux (flux) conductive material and is fixedly supported by the support frame 41. Pole piece 51
Extend parallel to the crankshaft 23.
The pole pieces 51 each include a first or inner portion 5 adjacent the engine block assembly 15.
3 and a second or outer portion 55 spaced apart from the engine block assembly 15. In the disclosed configuration, the pole pieces 51 extend between the engine block assembly 15 and the ring-shaped mounting member 45, although other configurations may be employed. The pole piece 51 has nine rods or tubes.
And the rod or tube is preferably composed of a flux conducting material. The pole pieces 51 are provided at equal intervals in the arc extending direction. Furthermore, the inner end of the pole piece 51 is
It extends into a suitable receiving part (in other words, socket) or receiving port (in other words, pocket) 54 formed in the engine block assembly 15. The outer ends of the pole pieces 51 extend into suitable receiving portions (in other words, sockets) or receiving ports (in other words, pockets) 56 formed in the ring-shaped mounting member 45. The pole piece 51 preferably comprises a concavely formed inwardly facing surface 58.

The first or stationary assembly 33 also includes a plurality of pole piece or armature windings 57. A plurality of pole piece windings, ie, armature windings 57, are each fixed in the center of the pole piece 51 between the inner portion 53 of the pole piece and the outer portion 55 of the pole piece. Further, each of the plurality of pole piece windings, that is, the armature windings 57 includes a plurality of coils. The pole piece winding 57 can be suitably connected to a suitable circuit using electrical energy, such as an ignition circuit or a lighting circuit (not shown).

The first or stationary assembly 33 also includes a field winding 61. Field winding 6
1 is fixedly supported by a support frame 41. The field winding 61 is also provided radially inside the support frame 41. Although other configurations may be employed, in the disclosed configuration the field winding 61
Comprises any suitable number of coils extending substantially perpendicular to the axis of the crankshaft. Field winding 6
1 further comprises a first end or inner end 63, a second end or outer end 65, and a central opening 67. The first or inner end 63 is provided adjacent to the engine block assembly 15. The second or outer end 65 is the engine block assembly 15
Remote from the first end or inner end 6
It is provided at a distance from 3 in the axial direction. The central opening 67 is provided in the field winding 61 and extends between a first end or inner end 63 and a second end or outer end 65. The field winding 61 can be suitably connected to a suitable source of electrical energy, such as a battery (not shown).

The field winding 61 is separated from the support frame 41.
Any suitable means or configuration for supporting can be employed. In the disclosed configuration, multiple support brackets 71 extend from the center of multiple members, or rods, or supports 43, respectively. In addition, each of the plurality of support brackets 71 includes an inner arm 73 and an outer arm 75 that are provided at intervals in the axial direction. Inner arm 73 and outer arm 75
Are respectively the inner end 63 and the outer end 65 of the field winding 61.
The field winding 61 is thereby held in a fixed position within the support frame 41.

Any suitable configuration for assembling the mounting member 45, rod or support 43, and support bracket 71 together can be employed. In the disclosed arrangement, a plurality of bolts 79 are provided, each having a ring-shaped attachment member 45, a rod or support 43,
And extends axially through the support bracket 71 and into the engine block assembly 15.

The second assembly or rotating assembly 35 is fixed to the crankshaft 23. Second
Of the first rotor (or rotor) plate, in other words, the inner rotor plate or inner flux plate 83, and the second rotor (rotor) plate, in other words, the outer rotor plate. , That is, the outer magnetic flux plate 85. The inner rotor plate 83 and the outer rotor plate 85 are made of a magnetic flux conducting material such as iron. In the disclosed configuration, the first rotor plate or inner rotor plate 83 includes the engine block assembly 15 although other configurations may be employed.
Are provided adjacent to each other. The first rotor plate or inner rotor plate 83 is a first annular core portion for receiving magnetic flux, that is, a central annular core portion 91, which is provided at least partially in the central opening 67 of the field winding 61.
It has. The first rotor plate or inner rotor plate 83 also includes a plurality of radially extending arms 93 that are spaced apart in the arc-extending direction. Each of the plurality of arms 93 has a core portion 91.
And has a radially outer magnetic flux surface portion, that is, a magnetic pole 95. The radially outer magnetic flux surface portion, that is, the magnetic pole 95 is provided in proximity to the inner end portions 53 of the plurality of magnetic pole pieces 51.

The outer rotor plate 85 is provided separately from the engine block assembly 15. The outer rotor plate 85 includes the central opening 6 of the field winding 61.
First for receiving a magnetic flux, at least partially provided in FIG.
The annular core portion, that is, the central annular core portion 101 is provided. The outer rotor plate 85 also includes a plurality of arms 103 that are provided at intervals in the arc-shaped extending direction and extend in the radial direction. Each of the plurality of arms 103 includes a magnetic flux surface portion 105 on the radially outer side. The magnetic flux surface portion 105 is provided close to the second end portion, that is, the outer end portion 55, of the plurality of magnetic pole pieces 51.

The central annular core portion 91 of the inner rotor plate 83 and the central annular core portion 101 of the outer rotor plate 85 are preferably engaged with each other. The magnetic flux surface portion 95 of the inner rotor plate 83 and the magnetic flux surface portion 105 of the outer rotor plate 85 are axially aligned, whereby the magnetic pole piece 51 and the magnetic pole piece winding 57 provided on the magnetic pole piece 51 are connected. It is easy to complete the magnetic flux path passing through. The magnetic flux passage includes the magnetic flux surface portion 95 and the magnetic flux surface portion 10.
5 occurs by passing through the inner portion 53 and the outer portion 55 of the pole piece 51.

The second or rotating assembly 35 also preferably includes a ring gear 111. The ring gear 111 can be engaged with a starter (starter) pinion (not shown) when the engine is started. Any suitable means for securing the ring gear 111 to the outer rotor plate 85 can be employed. In the disclosed configuration, the plurality of bolts 113 are
It extends axially through the ring gear 111 and into the outer rotor plate 85.

The second or rotating assembly 35 also preferably includes a first flux limiting member, or outer flux limiting member 121. The first magnetic flux limiting member, namely the outer magnetic flux limiting member 121, is preferably made of a high magnetic resistance material such as aluminum. The first flux limiting member, or outer flux limiting member 121, is suitably secured to the crankshaft 23 so that it can rotate with the crankshaft 23.
The first magnetic flux limiting member, that is, the outer magnetic flux limiting member 121.
Has a generally inverted cup shape and surrounds the outer end or outer portion 25 of the crankshaft 23. The first magnetic flux limiting member, that is, the outer magnetic flux limiting member 121 also includes the crankshaft 23 and the inner rotor plate 8.
3 center annular core portion 91 and outer rotor plate 85
Is provided between the central annular core portion 101 and the central annular core portion 101 to reduce the movement of stray magnetic flux into the crankshaft 23.

The second assembly or rotating assembly 35 also preferably includes a second flux limiting member or inner flux limiting member 125. The second magnetic flux limiting member, i.e., the inner magnetic flux limiting member 125, is preferably made of a high magnetoresistive material such as aluminum. A second flux limiting member, the inner flux limiting member 125, is provided so that it can rotate with the crankshaft 23 and cannot move axially with respect to the crankshaft 23.
It is properly fixed to 3. The second magnetic flux limiting member, namely the inner magnetic flux limiting member 125, is provided between the inner rotor plate 83 and the portion 127 of the crankshaft 23. As a result, the crankshaft 2 is
It is possible to reduce the migration of stray magnetic fluxes into 3.

The central annular core portion 91 of the inner rotor plate 83 and the central annular core portion 1 of the outer rotor plate 85
Any suitable configuration for securing the inner rotor plate 83 and the outer rotor plate 85 to the crankshaft 23 with 01 engaged with each other can be employed. In the disclosed configuration, the bolt 131
Extends axially through the outer rotor plate 85 and through the first flux limiting member 121 and into the outer end 25 of the crankshaft 23. Thereby, the central annular core portion 91 and the central annular core portion 101 are engaged with each other, and the inner rotor plate 83 can be seated on the second magnetic flux limiting member, that is, the inner magnetic flux limiting member 125.

Shown in FIG. 4 is an alternative embodiment configuration including a pole piece 161. The pole pieces 161 are constructed and arranged in the same manner as shown in FIGS. 2 and 3, except for the following points. That is, the pole piece 161 is
It is made of a conductive material such as copper and is hollow.
In other words, the pole piece 161 comprises an inner bore 163 for flowing a coolant or coolant, but does not comprise the pole piece winding or armature winding 57. Inner bore 163
Any suitable means (not shown in detail) for supplying cooling fluid to and draining cooling fluid from inner bore 163 may be employed. Both ends of the tubular pole piece 161 made of copper can be connected to an electrical lead-in wire (not shown) leading to a circuit (not shown) using energy.

In operation, when the crankshaft 23 is rotated by the internal combustion engine 13, the magnetic flux surface portion 95 and the magnetic flux surface portion 10 are rotated.
5 rotates, so that the inner end 53 and the outer end 5 of the pole piece 51
Pass 5 Such movement causes the magnetic flux to periodically pass through the pole piece winding 57. An electric potential is thereby generated and used, for example, to activate an ignition circuit (not shown) or the like. The disclosed arrangement efficiently develops an electrical potential without abrading brushes and slip rings, and without causing arcing which creates electrical noise and dangerous sparks in the ship's environment. Further, it is possible to eliminate the non-existent explosion-proof area around the brush.

By not providing the brush, a smaller and higher output alternator (alternator or alternator) can be constructed.

Furthermore, since the disclosed generator or alternator uses individual pole pieces 51, it is a very expensive "slot winder".
Instead of der), the pole piece or armature winding 57 can be assembled to the pole piece 51 with an inexpensive winding machine.

Furthermore, in the disclosed structure:
Since the pole piece 51 is positioned at the outer diameter position of the generator or alternator, the pole piece winding 57 is aired at all four corners. Thus, cooling requirements can be significantly reduced compared to a typical "slot" wound alternator (a typical type of alternator having slots and windings provided around the slot).

Further, air is blown through the pole piece winding 57 by the fan action of the upper magnetic flux plate 83 and the lower magnetic flux plate 85, and by the fan action, air is blown.
Furthermore, the need for external cooling fans is reduced.

Furthermore, since each pole piece winding 57 is a separate winding, instead of the wire of the pole piece winding 57, a copper wire that is insulated and capable of pumping cooling liquid is used. A tube can be used. Each of the nine pole pieces is
It can have a separate source of coolant. As a result, it is possible to provide a tube having a small cross-sectional area with good cooling performance. With such a configuration, it is not necessary to provide a fan outside.

The magnetic flux limiting members 121 and 125 made of aluminum having the disclosed structure can reduce the amount of magnetic flux acting on the steel crankshaft from the rotor plates or the magnetic flux plates 83 and 85. Thereby, the efficiency of the generator or alternator can be further improved.

Various features of the invention are set forth in the following claims.

[Brief description of drawings]

FIG. 1 is a side view of a ship propulsion system embodying various features of the present invention.

FIG. 2 is an enlarged side view of a generator or alternator provided in the propulsion device of the ship shown in FIG.

FIG. 3 is a partially broken plan view of the generator or alternator described herein taken along line 3--3 in FIG.

FIG. 4 is a partial fragmentary view according to another embodiment.

5 is a partial cross-sectional view taken along line 5--5 of FIG.

[Explanation of symbols]

11 Outboard Motor 13 Internal Combustion Engine 15 Engine Block or Engine Block Assembly 21 Crankcase 23 Crankshaft 25 Part or End 31 Combined Flywheel and Generator 33 First Assembly or Fixed Assembly 35 Second Assembly or Rotation Assembly 41 Support frame 43 Plural support bodies, that is, rods, that is, members 45 that are provided at intervals in a direction that extends in an arc shape. A plurality of magnetic pole pieces 53 provided at intervals in the extending direction 53 First portion or inner portion 54 Receiving portion (in other words, socket) or receiving opening (in other words, pocket) 55 Second portion or outer portion 56 Receiver (replacement Socket 57 or a plurality of magnetic pole piece windings or armature windings 61 field winding 63 first end or inner end 65 second end or outer end 67 center Opening 71 Support bracket 73 Inner arm 75 Outer arm 79 Bolt 83 First rotor (rotor) plate, in other words, inner rotor plate, that is, inner magnetic flux plate 85 Second rotor (rotor) plate, in other words , The outer rotor plate, that is, the outer magnetic flux plate 91 The first annular core portion that receives the magnetic flux, that is, the central annular core portion 93 The plurality of arms that are provided at intervals in the arc extending direction and extend in the radial direction 95 Magnetic flux surface portion, that is, magnetic pole 101 First annular core portion that receives magnetic flux, that is, central annular core portion 03 A plurality of arms 105 provided at intervals in the arc extending direction and extending in the radial direction 105 Radial outside magnetic flux surface portion 111 Ring gear 113 Bolt 121 First magnetic flux limiting member, that is, outside magnetic flux limiting member 125 Second magnetic flux limiting Member, ie, inner magnetic flux limiting member 127 part 131 bolt 161 pole piece 163 inner bore

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Claims (19)

[Claims] 1. An internal combustion engine, the internal combustion engine comprising: an engine block; a crankshaft rotatably attached to the engine block about an axis by the engine block; the engine block and the crank. A first assembly fixed to one of the shafts, the first assembly having a plurality of pole pieces fixed at intervals in a direction extending in an arc shape. Is made of an electrically conductive material, and the first assembly has a fixed field winding, the field winding being provided radially inward of the pole piece. The internal combustion engine further includes a second assembly fixed to the other of the engine block and the crankshaft. The assembly has a magnetic flux receiver, the magnetic flux receiver extends so as to receive magnetic flux with respect to the field winding, and the second assembly extends in an arc shape. Has a plurality of magnetic flux surface portions provided at intervals in the direction,
The internal combustion engine, wherein the magnetic flux surface portion extends from the magnetic flux receiving portion and is provided so as to be able to move close to the plurality of magnetic pole pieces. 2. The internal combustion engine according to claim 1, wherein the magnetic pole pieces are made of an electrically conductive material. 3. The internal combustion engine according to claim 1, wherein the magnetic pole pieces are made of a magnetic flux conductive material, and the magnetic pole pieces each include an inner portion provided adjacent to the engine block, An internal combustion engine comprising: an outer portion provided away from the engine block, and a pole piece winding fixed to the pole piece between the inner portion and the outer portion. 4. An internal combustion engine, the internal combustion engine comprising: an engine block; a crankshaft rotatably attached to the engine block about the axis by the engine block; the engine block and the crank. A first assembly fixed to the shaft and one side, the first assembly having a plurality of pole pieces fixed at intervals in a direction extending in an arc shape. Are respectively fixed to the magnetic pole pieces between an inner portion provided adjacent to the engine block, an outer portion provided apart from the engine block, and the inner portion and the outer portion. A pole piece winding, and the first assembly has a fixed field winding, the field winding comprising: The second internal assembly is provided radially inward of the magnetic pole piece, and the internal combustion engine further includes a second assembly fixed to the other of the engine block and the crankshaft. Has a magnetic flux receiving portion, the magnetic flux receiving portion extends so as to receive a magnetic flux with respect to the field winding, and the second assembly has an arc extending direction. Has a plurality of inner magnetic flux surface portions provided at intervals, the inner magnetic flux surface portion extends from the magnetic flux receiving portion, the inner magnetic flux surface portion, also the plurality of magnetic pole pieces of the A second assembly is provided adjacent to the engine block for movement closer to the inner portion, and further, the second assembly is provided with a plurality of outer portions spaced in an arcuate direction. A bundle surface portion, wherein the outer magnetic flux surface portion extends from the magnetic flux receiving portion, and the outer magnetic flux surface portion also moves close to the outer portion of the plurality of pole pieces. The internal combustion engine is provided separately from the engine block. 5. The internal combustion engine according to claim 4, wherein the first assembly is fixed to the engine block, and the second assembly is fixed to the crankshaft. Internal combustion engine. 6. An internal combustion engine, the internal combustion engine comprising: a crankcase, a crankshaft mounted by the engine block so as to be rotatable about an axis, and a fixing assembly fixed to the engine block. The fixing assembly includes a frame fixed to the engine block and a plurality of magnetic pole pieces provided at intervals in an arc extending direction, and the magnetic pole pieces have a circular shape. The pole pieces are arranged and fixed to the frame, and extend substantially parallel to the axis of the crankshaft, and the magnetic pole pieces respectively include inner end portions provided adjacent to the engine block and from the engine block. An outer end provided apart from the inner end in the axial direction, and the inner end and the outer end. A magnetic pole piece winding fixed to the magnetic pole piece between the magnetic pole piece and an outer end portion, and the fixed assembly has a field winding provided radially inside the magnetic pole piece. The field winding has an inner end provided adjacent to the engine block, and an outer end provided apart from the engine block and axially spaced from the inner end. And an opening extending between the inner end and the outer end, the internal combustion engine also includes a rotating assembly fixed to the crankshaft, the rotating assembly comprising: An inner rotor plate is provided adjacent to the engine block, and the inner rotor plate is provided with a magnetic flux receiving portion provided in the opening of the field winding, with a gap in a direction extending in an arc shape. A plurality of first magnetic flux surface portions, the first magnetic flux surface portions being provided in proximity to the inner end portions of the plurality of magnetic pole pieces; An outer rotor plate is provided apart from the engine block and is axially spaced from the inner rotor plate, and the outer rotor plate is a magnetic flux provided in the opening of the field winding. A plurality of second magnetic flux surface portions provided at intervals in a direction extending in an arc shape, wherein the second magnetic flux surface portions are close to the outer end portions of the plurality of magnetic pole pieces. Internal combustion engine characterized in that it is provided as. 7. The internal combustion engine according to claim 6, wherein the frame includes a plurality of supports provided at intervals in a direction extending in an arc, and the supports are arranged in a circle. The support is fixed to the engine block, the support also extends substantially parallel to the crankshaft axis, and the frame further comprises a mounting ring spaced from the engine block. The mounting ring is fixed to the plurality of supports, the pole piece is fixed between the mounting ring and the engine block, and the field winding is the plurality of supports. Internal combustion engine characterized by being fixed to. 8. The internal combustion engine of claim 6, wherein the rotating assembly also includes a ring gear. 9. The internal combustion engine according to claim 6, wherein the rotating assembly also includes a magnetic flux flow restricting member, the magnetic flux flow restricting member including the first and second magnetic flux plates and the crank. An internal combustion engine characterized by being provided between a shaft and the shaft. 10. The internal combustion engine according to claim 6, wherein the rotating assembly also includes a magnetic flux flow restricting member, the magnetic flux flow restricting member including the first magnetic flux plate and the engine block. An internal combustion engine characterized by being provided between them. 11. The internal combustion engine according to claim 6, wherein the plurality of support bodies provided at intervals in the arc extending direction include five support members. 12. The internal combustion engine according to claim 6, wherein the plurality of magnetic pole pieces include nine magnetic pole piece members. 13. The internal combustion engine according to claim 6, wherein the plurality of magnetic pole pieces are provided at equal intervals in the arc extending direction. 14. The internal combustion engine according to claim 6, wherein the plurality of magnetic flux surface portions include six magnetic flux surface surfaces. 15. The internal combustion engine according to claim 6, wherein the plurality of magnetic flux surface portions are provided at equal intervals in a direction extending in an arc shape. 16. An internal combustion engine, comprising: a crankcase, a crankshaft mounted by an engine block to be rotatable about an axis, and a fixing assembly fixed to the engine block. And the fixing assembly is arranged in a circle and fixed to the engine block,
Five supports provided at intervals in a direction extending in an arc shape, the five supports extending substantially parallel to the crankshaft axis, and the plurality of supports provided apart from the engine block. A mounting ring fixed to the body and nine magnetic pole pieces provided at equal intervals in an arc extending direction are provided. The magnetic pole piece is circular between the mounting ring and the engine block. The magnetic pole pieces extend substantially parallel to the crankshaft axis, and each of the magnetic pole pieces is an inner side provided adjacent to the engine block. An end portion, an outer end portion provided apart from the engine block at an axial distance from the inner end portion, and between the inner end portion and the outer end portion. A plurality of pole piece windings respectively fixed to the magnetic pole pieces, wherein the fixing assembly further comprises a field winding fixed to at least one of the plurality of supports, The field winding is provided radially inward with respect to the plurality of supports, and the field winding is further provided with an inner end adjacent to the engine block and from the inner end. The engine includes an outer end that is spaced apart from the engine block in the axial direction, and an opening that extends between the inner end and the outer end. A rotating assembly fixed to the shaft, the rotating assembly including an inner magnetic flux plate disposed adjacent to the engine block, the inner magnetic flux plate including the opening of the field winding. A first portion provided at the mouth portion and six magnetic flux surface portions provided at equal intervals in an arc extending direction, the magnetic flux surface portions being provided close to the inner end portions of the plurality of magnetic pole pieces. And six outer magnetic flux plates, the rotating assembly also includes an outer magnetic flux plate axially spaced from the inner magnetic flux plate and spaced from the engine block. The magnetic flux plate is a first portion provided in the opening of the field winding, and a first portion that engages with the first portion of the inner magnetic flux plate, and extends in an arc-shaped direction. Six magnetic flux surface portions equally spaced apart, the six magnetic flux surface portions being provided proximate to the outer ends of the plurality of pole pieces, the rotating assembly also comprising: Inside and outside A first magnetic flux flow restricting member provided between the magnetic flux plate and the crankshaft; a second magnetic flux flow restricting member provided between the inner magnetic flux plate and the engine block; An internal combustion engine, comprising: a ring gear fixed to a rotor plate. 17. A combined flywheel and generator, the combined flywheel and generator comprising a first assembly securable to one of an engine block and a crankshaft, the first assembly comprising: Assembly has a support frame and a plurality of magnetic pole pieces provided at intervals in a direction extending in an arc, the magnetic pole pieces being fixedly supported by the support frame, The piece also has a first portion provided adjacent the engine block and a second portion provided away from the engine block, the first assembly also comprising: A plurality of magnetic pole piece windings fixed to the magnetic pole pieces between the first portion and the second portion, and a field winding fixedly supported by the support frame. A wire, the field winding is provided radially inward of the support frame, and the field winding further includes an opening extending along the crankshaft axis. The combined flywheel and generator are also
A second assembly that can be fixed to the other of the engine block and the crankshaft is provided, and the second assembly includes a core portion that extends through the opening of the field winding and a gap in a direction that extends in an arc shape. A plurality of firsts provided with a space
Magnetic flux surface portions of the plurality of first magnetic flux surface portions that extend from the core portion and that are provided in proximity to the first portions of the plurality of magnetic pole pieces, and are spaced from each other in an arc extending direction. A plurality of second provided
Magnetic flux surface portions extending from the core portion, and the plurality of second magnetic flux surface portions provided in proximity to the second portions of the plurality of magnetic pole pieces. Combined flywheel and generator. 18. A flywheel having a flux core assembly fixable to a crankshaft, the flux core assembly extending in an arc shape with a core portion extending through an opening of a fixed field winding. A plurality of firsts provided at intervals in the direction
Magnetic flux surface portions of the first magnetic flux surface portion extending from the core portion and movable in a state of being close to a plurality of magnetic pole pieces, and a plurality of magnetic flux surface portions that are provided at intervals in the arc extending direction. Second
And a plurality of second magnetic flux surface portions extending from the core portion and movable in a state of being close to the plurality of magnetic pole pieces. 19. The flywheel according to claim 18, further comprising a ring gear fixed to one of the first magnetic flux surface portion and the second magnetic flux surface portion.