JP2993296B2 - Outboard motor generator mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for mounting a generator on an outboard motor, and more particularly to a device for mounting a charge coil on a generator mounted on an engine of an outboard motor, in a simple and accurate manner. The present invention relates to an outboard motor generator mounting device capable of achieving a large capacity and improving a power generation capacity.

[0002]

2. Description of the Related Art Some outboard motors have a generator mounted above a center line of a crankshaft of an engine to be mounted. Such outboard motor generators are shown in FIGS.
As shown in FIG. In the figure, reference numeral 202 denotes an engine of an outboard motor (not shown), and reference numeral 204 denotes a generator.
The generator 204 includes a charge coil 2 constituting a stator.
06 and a flywheel 208 constituting a rotor. The charge coil 206 includes a core section 210 and a coil section 212 wound around the core section 210. The flywheel 208 has a built-in rotor (not shown).

As shown in FIG. 10, the engine 202 includes a crankshaft 214 above the crankshaft center line A.
A mounting boss 218 is provided around the crank pulley 216 mounted on the boss. The charge coil 206 constituting the stator is formed by attaching the core portion 210 to the mounting boss portion 218.
Is attached by a mounting bolt 220.

Also, a flywheel 2 constituting a rotor
08 is a charge coil 206 as shown in FIG.
Are mounted on the upper end of the crankshaft 214 by mounting bolts (not shown) so that the rotor (not shown) is positioned around the periphery of the crankshaft. Reference numeral 222 denotes an exciter coil.

[0005]

In the above-described apparatus for mounting the generator 204 of the outboard motor, the charge coil 206 is mounted on the mounting boss 214. However,
When the charge coil 206 is mounted on the mounting boss 214, there is a disadvantage that the accuracy of the mounting position and the mounting rigidity are low. In order to solve such inconvenience, a positioning operation using a knock pin or the like is required, and an increase in the number of mounting locations by the mounting boss portion 214 is required, so that the charging coil 206 cannot be easily and accurately mounted. was there.

In order to increase the capacity of the charge coil 206 in order to improve the power generation capability of the generator 204, it is necessary to attach a multi-pole type charge coil 206. However, in order to mount the multi-pole type charge coil 206, it is necessary to increase the number of mounting locations by the mounting bosses 214, so that the multi-pole type charge coil 206 cannot be easily mounted, and the power generation capacity is improved. There was an inconvenience that could not be fulfilled.

[0007]

SUMMARY OF THE INVENTION In view of the above, the present invention provides an outboard motor in which a generator is mounted above the engine in the direction of the crankshaft center line. A substantially cylindrical mounting body attached to the engine is provided so as to enclose the crank pulley mounted on the crankshaft in the upper direction, and a timing belt wound around the crank pulley is inserted into a cylindrical portion of the mounting body. An insertion hole is provided to be opened, and a mounting body-side first hood portion to be engaged with an engine-side hood portion of the engine is formed and provided at an axial lower end side of the cylindrical portion of the mounting body. At the upper end of the cylindrical portion of the body in the axial direction, a second body-fitting portion is formed and provided to be engaged with the coil-side portion of the charge coil of the generator.

[0008]

According to the structure of the present invention, a substantially cylindrical mounting body which is mounted on the engine by enclosing the crank pulley mounted on the crankshaft above the centerline of the engine is provided. At the lower end in the axial direction of the cylindrical portion of the body, a mounting body-side first anchor portion to be engaged with the engine-side anchor portion of the engine is formed and provided. By forming and providing the mounting body-side second hood section to be engaged with the coil side hood section of the charge coil of the machine, a multi-pole type charge coil is provided to the engine through the mounting body by the hood structure. It can be accurately and firmly mounted.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 to 9 show an embodiment of the present invention. 8 and 9, reference numeral 2 denotes an outboard motor. The outboard motor 2 is covered with an engine cover 4, an under cover 6, a drive shaft housing 8, and a gear case 10 and a hull (not shown) by a mounting unit 12.
Attached to

The outboard motor 2 is equipped with a four-cycle engine 14 as shown in FIGS. The outboard motor 2 drives the drive shaft 16 by the engine 14 and changes the rotation direction by a gear (not shown) to drive the propeller 18.

The engine 14 includes a cylinder block 2
The crankshaft 22 is supported by the crankcase 24 so that the crankshaft 22 is oriented substantially vertically to zero. Cylinder block 20
In this embodiment, a plurality of, in this embodiment, four cylinders 26 whose cylinder axis center lines are directed substantially in the horizontal direction are arranged in a substantially vertical direction, and each has a built-in piston 28. The pistons 28 are connected to the crankshaft 22 through connecting rods 30, respectively.

A cylinder head 32 is mounted on the cylinder block 20, and a head cover 34 is attached to the cylinder head 32. The cylinder head 32 supports a camshaft 36 for driving an intake valve and an exhaust valve for opening and closing an intake port and an exhaust port (not shown).

The engine 14 has an intake manifold 38 located on one side. Intake manifold 38
Is a surge tank 40 which is a gathering part and the surge tank 40
And a plurality of branch pipes 42 branched from the branch pipe. The downstream side of each branch pipe 42 is attached to the cylinder head 32. A throttle body 46 is mounted on a surge tank 40 upstream of the intake manifold 38 via a spacer 44, and a throttle guide 48 is mounted upstream of the throttle body 46. The throttle body 46 has a built-in throttle valve (not shown).

Each branch pipe 4 is connected to the intake manifold 38.
0 has a fuel injection valve 50. The fuel injection valve 50 is
It is attached to a portion close to the cylinder head 32 and injects fuel into an intake port (not shown). Note that reference numeral 52
Is a fuel distribution pipe.

As shown in FIGS. 4 to 6, the engine 14 is provided with a crank pulley mounting portion 54 on the crankshaft 22 protruding from the cylinder block 20 and the crankcase 24 above the direction of the centerline A of the crankshaft. ing. A crank pulley 56 is mounted on the crank pulley mounting portion 54 by a crank pulley nut 58. The crank pulley 56 is held between the guide plates 60.

As shown in FIG. 7, the engine 14 includes a cylinder head 32 above the camshaft center line B.
A cam pulley mounting portion 62 is provided on the cam shaft 36 protruding from the head cover 34. Cam pulley mounting part 6
2, a cam pulley 64 is attached by a cam pulley nut 66.

The crank pulley 56 and the cam pulley 64
, The timing belt 68 is wound. The timing belt 68 is urged by a belt tensioner 70.

The outboard motor 2 has a generator 72 mounted above the engine 14 in the direction of the center line A of the crankshaft.
As shown in FIGS. 1 to 6, the generator 72 includes a charge coil 74 forming a stator and a flywheel 76 forming a rotor. The charge coil 74 has an inner diameter D1
And an annular core portion 78 having an outer diameter D7, and a plurality of coil portions 80 having an inner diameter D5 wound around a plurality of projections which project in the radial direction on the circumference of the core portion 78, respectively. , Formed in a multi-pole type.

The flywheel 76 incorporates a rotor 82 having an inner diameter D6. Flywheel 76
Consists of a mounting portion 84 and a covered cylindrical wheel portion 86 fixed to the mounting portion 84. Flywheel 76
The mounting portion 84 is mounted to a wheel mounting portion 88 provided above the crank pulley mounting portion 54 of the crankshaft 22 by a wheel nut 90 and a wheel portion 86
The rotor 82 is provided on the inner periphery.

As described above, in the outboard motor 2 in which the generator 72 is mounted above the direction of the crankshaft center line A of the engine 14, as shown in FIGS. A substantially cylindrical mounting body 92 is provided to cover the crank pulley 56 mounted on the upper crankshaft 22 and to be mounted on the engine 14.

The mounting body 92 has a cylindrical portion 9 having an inner diameter D3.
4, a first extending portion 96 extending in the form of a flange outside the lower end of the cylindrical portion 94 in the axial direction, and an inner diameter D2 extending in the form of a flange inside the upper end of the cylindrical portion 94 in the axial direction. The second extension 98 has a hat-shaped cross section.

A cylindrical belt 94 of the mounting body 92 has a timing belt 68 wound around the crank pulley 56.
Is inserted and provided.

Inside the first extending portion 96 at the lower end in the axial direction of the cylindrical portion 94 of the mounting member 92, a mounting member-side first anchor portion 102 having an inner diameter D4 is formed and provided. Further, a second portion on the axially upper end side of the cylindrical portion 94 of the mounting body 92 is formed.
The extension portion 98 is provided with a mounting body side second brazing portion 104 having an outer diameter D1. The mounting body-side second brazing portion 104 is formed outside the cylindrical protruding edge portion 105 inside the second extending portion 98.

The engine 14 has an outer diameter D which extends over the cylinder block 20 and the crankcase 24, over the cylinder block 20 and the crankcase 24 from which the crankshaft 22 projects above the direction of the centerline A of the crankshaft.
4 is formed and provided. In FIG. 1, the cylinder block 20
1 illustrates only the engine-side hood 106 provided in the vehicle. The core portion 78 of the charge coil 74 of the generator 72 has a coil side soldering portion 10 having an inner diameter D1.
8 are formed and provided.

An attachment-side first anchor portion 102 at the lower end in the axial direction of the cylindrical portion 94 of the attachment 92 is engaged with an engine-side anchor portion 106 of the engine 14. Also, a second mounting body side of the cylindrical portion 94 of the mounting body 92 in the axial upper end side.
The influx section 104 includes a charge coil 74 of the generator 72.
Is engaged with the coil-side heating part 108. Reference numeral 110 denotes a generator cover.

Next, the operation will be described.

When the engine 14 of the outboard motor 2 is operating, the flywheel 76 constituting a rotor is rotated by the crankshaft 22 with respect to the charge coil 74 of the generator 72 to generate electric power.

A mounting body 92 for mounting the charge coil 74 of the generator 72 to the engine 14 includes the mounting body-side first soldering portion 102 at the lower end in the axial direction of the cylindrical portion 94 and the cylinder block 20 and the crankcase 24 of the engine 14. The first extension portion 96 is fixed to the cylinder block 20 and the crankcase 24 by bolts. As a result, the mounting body 92 includes the mounting body-side first heating part 102 and the engine-side heating part 10 having the diameter D4.
6 and is mounted on the engine 14 by centering.

The mounting member 92 includes a second mounting member 104 at the upper end in the axial direction of the cylindrical portion 94 and a coil-side fixing member 10 of the charge coil 74 of the generator 72.
8 and the core 78 is bolted to the second extension 9
8 fixed. As a result, the multi-pole type charge coil 74 is centered by the engagement of the second body-fitting portion 104 and the coil-side portion 108 on the mounting body, and is attached to the mounting body 92.

As described above, the charge coil 74 is mounted in a centered manner by means of a ring structure, and can be mounted more easily and more accurately than the conventional positioning using a knock pin or the like. Can be. In other words, the multi-pole type charge coil 74 can be accurately and firmly attached to the engine 14 through the mounting body 92 by the enamel structure.

Therefore, the charge coil 74 can be easily and accurately attached, and the capacity of the charge coil 74 can be increased by increasing the number of poles, so that the power generation capacity can be improved. Further, since the cylindrical portion 94 of the mounting body 92 is provided with an opening 100 through which the timing belt 68 wound around the crank pulley 56 is inserted, the driving of the cam shaft 34 is not affected at all. Absent.

The generator 72 has a multipolar charge coil 74 mounted in a limited space,
The number of coil units 80 can be increased as compared with the conventional single-pole type charge coil 206 shown in FIGS. 10 and 11, and the power generation capacity can be increased.

In FIG. 1, the inner diameter D3 of the cylindrical portion 94 of the mounting body 92 is determined in consideration of the outer diameter of the crank pulley 52 and the thickness and margin of the timing belt 68. The mounting body 92 has a second extending portion 98 extending in the center direction at the upper end side in the axial direction of the cylindrical portion 94, so that the core portion of the charge coil 74 that engages with the mounting body side second soldering portion 104. 7
The inner diameter D1 of the coil-side soldering portion 108 of FIG.
4 can be smaller than the inner diameter D3. Therefore, the effective diameter D6-D1 can be set to be large, and the power generation capacity of the charge coil 74 can be designed to be large.

[0035]

As described above in detail, according to the present invention, a multi-pole type charge coil can be accurately and firmly attached to an engine through a mounting structure by means of a ring structure.

Therefore, the accuracy of the mounting position of the charge coil of the generator mounted on the engine of the outboard motor and the mounting rigidity to the engine can be improved, and the multi-pole type charge coil can be easily mounted. . Accordingly, the charge coil can be easily and accurately attached, and the capacity of the charge coil can be increased by increasing the number of poles, so that the power generation capacity can be improved. Further, since the cylindrical portion of the mounting body is provided with an opening through which the timing belt wound around the crank pulley is inserted, the driving of the camshaft is not affected at all.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a main part of an outboard motor generator mounting apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view of a mounting body.

FIG. 3 is a plan view of a charge coil.

FIG. 4 is an enlarged sectional view taken along line 〓-〓 of FIG. 8;

FIG. 5 is a plan view showing a state in which a charge coil indicated by an arrow V in FIG. 4 is removed.

FIG. 6 is a plan view showing a state in which the charge coil is partially broken by an arrow V in FIG. 4;

FIG. 7 is a sectional view taken along the line VII-VII of FIG. 9;

FIG. 8 is a side view of the outboard motor.

FIG. 9 is a rear view of the outboard motor.

FIG. 10 is a perspective view showing a conventional example in which a charge coil of a generator is mounted.

FIG. 11 is a perspective view showing a conventional example in which a flywheel of a generator is mounted.

[Explanation of symbols]

 2 Outboard motor 14 Engine 18 Propeller 20 Cylinder block 24 Crankcase 32 Cylinder head 34 Head cover 36 Camshaft 38 Intake manifold 50 Fuel injection valve 56 Crank pulley 64 Cam pulley 68 Timing belt 72 Generator 74 Charge coil 76 Flywheel 78 Core section 80 Coil part 82 Rotor 84 Attachment part 86 Wheel part 92 Mounted body 94 Cylindrical part 96 First extended part 98 Second extended part 100 Insertion hole 102 Mounted body-side first wax part 104 Mounted body-side second wax part 106 Engine side Inro 108 Incoro 110 coil side generator cover

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Nobuyuki Shomura 300 Takatsukacho, Hamamatsu-shi, Shizuoka Suzuki Co., Ltd. (72) Inventor Hidehiko Yoshioka 300 Takatsukacho, Hamamatsu-shi, Shizuoka Suzuki Co., Ltd. (72 ) Inventor Jiro Saiga 300-takatsuka-cho, Hamamatsu-shi, Shizuoka Suzuki Co., Ltd. (56) References JP-A-62-13735 (JP, A) JP-A-2-70927 (JP, A) 53955 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F02B 67/00 B63H 20/00 F02B 63/04 H02K 5/00

Claims (1)

(57) [Claims] 1. An outboard motor having a generator mounted above an engine crankshaft centerline direction, wherein the outboard motor encloses a crank pulley attached to a crankshaft above the engine crankshaft centerline direction. A substantially cylindrical mounting body attached to the engine is provided, and a cylindrical portion of the mounting body is provided with an opening through which a timing belt wound around the crank pulley is inserted, and an axial direction of the cylindrical portion of the mounting body is provided. At the lower end side, a mounting body side first hood section to be engaged with the engine side hood section of the engine is formed and provided, and at the upper end side in the axial direction of the cylindrical portion of the mounting body, a charge coil of the generator is provided. A mounting device for a generator of an outboard motor, wherein a mounting body-side second wax portion to be engaged with the coil-side wax portion is formed and provided.