JPH06129257A - Attaching device of generator of outboard engine - Google Patents

Abstract

PURPOSE:To realize an attaching device for the generator of an outboard engine, wherein a charge coil can be easily and accurately attached, and the volume of the charge coil is increased so as to improve its heat-generating capability. CONSTITUTION:In an outboard engine wherein a generator 72 is attached above in the direction of the crank shaft center line of an engine, an approximately cylindrical attaching body 92 to be attached to the engine while covering a crank pulley 56 attached on the crank shaft above in the direction of the crank shaft center line of the engine is provided, an insertion hole for inserting a timing belt 68 to be laid around a crank pulley 56 is opened and provided on the cylinder portion 94 of the attaching body. An attaching body side first faucet part 102 to be engaged with the engine side faucet part 106 of the engine is formed below in the axial direction of the cylinder portion of the attaching body, while the attaching body side second faucet part 108 to be engaged with the coil side faucet part 108 of the charge coil 74 of the generator is formed above in the axial direction of the cylinder portion of the attaching body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a generator mounting apparatus for an outboard motor, and more particularly, it allows a charge coil of a generator mounted on an engine of an outboard motor to be easily and accurately mounted and to be mounted on the charge coil. The present invention relates to a generator mounting device for an outboard motor that can achieve a large capacity and improve a power generation capacity.

[0002]

2. Description of the Related Art In some outboard motors, a generator is mounted above a crankshaft center line of an engine to be mounted. Such an outboard motor generator is shown in FIGS.
As shown in 1, it is attached. In the figure, 202 is an engine of an outboard motor (not shown), and 204 is a generator.
The generator 204 is a charge coil 2 that constitutes a stator.
06 and a flywheel 208 that constitutes a rotor. The charge coil 206 includes a core portion 210 and a coil portion 212 wound around the core portion 210. Further, the flywheel 208 has a rotor (not shown) built therein.

As shown in FIG. 10, the engine 202 has an upper crankshaft 214 in the direction of the centerline A of the crankshaft.
A mounting boss portion 218 is provided around the crank pulley 216 mounted on the. The charge coil 206 constituting the stator has the core portion 210 and the mounting boss portion 218 attached thereto.
It is attached by a mounting bolt 220.

The flywheel 2 which constitutes the rotor
08 is a charge coil 206 as shown in FIG.
Is mounted on the upper end of the crankshaft 214 by a mounting bolt (not shown) so that a rotor (not shown) is located around the rotor. Reference numeral 222 is an exciter coil.

[0005]

By the way, in the mounting device for the generator 204 of the outboard motor, the charge coil 206 is mounted on the mounting boss portion 214. However,
When the charge coil 206 is mounted on the mounting boss portion 214, there is a disadvantage that the mounting position accuracy and mounting rigidity are low. In order to eliminate such an inconvenience, it is necessary to perform a positioning operation using a knock pin or the like and to increase the number of mounting locations by the mounting boss portion 214, which makes it impossible to mount the charge coil 206 easily and accurately. was there.

Further, in order to increase the capacity of the charge coil 206 in order to improve the power generation capacity of the generator 204, it is necessary to mount the multi-pole type charge coil 206. However, in order to attach the multi-pole type charge coil 206, it is necessary to increase the number of attachment points by the attachment boss portion 214, so that the multi-pole type charge coil 206 cannot be easily attached and the power generation capacity is improved. There was an inconvenience.

[0007]

Therefore, in order to eliminate the above-mentioned inconvenience, the present invention provides an outboard motor having a generator mounted above the crankshaft centerline of the engine. Direction, the crank pulley mounted on the crank shaft is covered with a substantially cylindrical mounting body to be mounted on the engine, and the timing belt wound around the crank pulley is inserted into the cylindrical portion of the mounting body. And a mounting body-side first mounting portion to be engaged with the engine-side mounting portion of the engine is formed on the lower end side in the axial direction of the cylindrical portion of the mounting body. It is characterized in that a mounting body side second anchor portion to be engaged with the coil side anchor portion of the charge coil of the generator is formed and provided on the axially upper end side of the cylindrical portion of the body.

[0008]

According to the structure of the present invention, there is provided a substantially cylindrical mounting body which covers the crank pulley mounted on the upper crankshaft of the engine in the direction of the centerline of the crankshaft and which is mounted on the engine. A mounting body side first brazing portion engaged with an engine side brazing portion of the engine is formed and provided on the axially lower end side of the cylindrical portion of the body, and power generation is provided on the axially upper end side of the mounting body cylindrical portion. By providing the mounting body-side second mounting portion to be engaged with the coil side mounting portion of the charge coil of the machine, the multi-pole type charge coil is attached to the engine by the mounting structure through the mounting body. It can be mounted accurately and firmly.

[0009]

Embodiments of the present invention will be described in detail below with reference to the drawings.

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

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 converts 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 oriented in a substantially vertical direction at 0 and is supported by a crankcase 24. Cylinder block 20
In this embodiment, a plurality of, in this embodiment, four cylinders 26, in which the cylinder axis center line is oriented in a substantially 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 by 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. A cam shaft 36 for driving an intake valve and an exhaust valve (not shown) for opening and closing an intake port and an exhaust port is pivotally supported by the cylinder head 32.

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

Each of the branch pipes 4 is attached to the intake manifold 38.
0 is equipped with 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 projecting from the cylinder block 20 and the crankcase 24 above the crankshaft center line A direction. ing. A crank pulley 56 is attached to the crank pulley attachment portion 54 with a crank pulley nut 58. The crank pulley 56 is sandwiched by the guide plates 60.

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

The crank pulley 56 and the cam pulley 64
A timing belt 68 is wound around and. The timing belt 68 is biased by a belt tensioner 70.

In the outboard motor 2, a generator 72 is mounted above the engine 14 in the direction of the crankshaft centerline A.
As shown in FIGS. 1 to 6, the generator 72 includes a charge coil 74 that constitutes a stator and a flywheel 76 that constitutes 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 radially projecting protrusions on the circumference of the core portion 78. The multi-pole type is formed.

The flywheel 76 also contains a rotor 82 having an inner diameter D6. Flywheel 76
Is composed of a mounting portion 84 and a covered cylindrical wheel portion 86 fixedly mounted on the mounting portion 84. The flywheel 76 is
The mounting portion 84 is mounted on the wheel mounting portion 88 provided above the crank pulley mounting portion 54 of the crank shaft 22 by the wheel nut 90, and the wheel portion 86 is mounted.
The rotor 82 is provided on the inner circumference.

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

The mounting body 92 has a cylindrical portion 9 having an inner diameter D3.
4, a first extending portion 96 extending outward in the axially lower end side of the cylindrical portion 94 in a flange shape, and an inner diameter D2 extending inward in the axially upper end side of the cylindrical portion 94 in a flange shape. The second extending portion 98 that is formed has a hat-shaped cross section.

A timing belt 68 wound around the crank pulley 56 is mounted on the cylindrical portion 94 of the mounting body 92.
An insertion hole 100 through which the is inserted is opened.

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

In the engine 14, the cylinder block 20 and the crank case 24 from which the crank shaft 22 projects upward in the direction of the center line A of the crank shaft, and the outer diameter D straddling the crank cylinder block 20 and the crank case 24.
The engine side anchoring portion 106 having the number 4 is formed and provided. In FIG. 1, the cylinder block 20
Only the engine-side anchoring portion 106 provided in FIG. Further, the core portion 78 of the charge coil 74 of the generator 72 has a coil side anchoring portion 10 having an inner diameter D1.
8 is formed and provided.

The first mounting part 102 on the mounting body side at the lower end of the cylindrical part 94 of the mounting body 92 in the axial direction is engaged with the engine side mounting part 106 of the engine 14. In addition, the second side of the mounting body on the upper end side in the axial direction of the cylindrical portion 94 of the mounting body 92.
The inlay portion 104 is a charge coil 74 of the generator 72.
Is engaged with the coil side anchor part 108. Reference numeral 110 is a generator cover.

Next, the operation will be described.

When the engine 14 of the outboard motor 2 is in operation, the crankshaft 22 rotates the flywheel 76, which constitutes a rotor, with respect to the charge coil 74 of the generator 72 to generate electricity.

The mounting body 92 for mounting the charge coil 74 of the generator 72 on the engine 14 includes the mounting body side first brazing portion 102 on the lower end side in the axial direction of the cylindrical portion 94, the cylinder block 20 and the crankcase 24 of the engine 14. Straddling the crank pulley 56 and enclosing the crank pulley 56, and engaging with the engine side anchoring portion 106, and the first extending portion 96 is fixed to the cylinder block 20 and the crank case 24 by bolts. As a result, the mounting body 92 is mounted on the mounting body side first mounting part 102 and the engine side mounting part 10 having the diameter D4.
It is attached to the engine 14 while being centered by the engagement of 6.

Further, in the mounting body 92, in the mounting body side second mounting part 104 on the upper end side in the axial direction of the cylindrical part 94, on the coil side mounting part 10 of the charge coil 74 of the generator 72.
8 is engaged, and the core portion 78 is bolted to the second extending portion 9
It is fixed to 8. As a result, the multipolar charge coil 74 is attached to the mounting body 92 while being centered by the engagement between the mounting body side second brazing portion 104 and the coil side brazing portion 108.

As described above, the charge coil 74 is mounted centeringly by the anchoring structure and can be mounted more easily and accurately than the conventional positioning by a knock pin or the like, and the mounting rigidity is enhanced. You can That is, the multi-pole type charge coil 74 can be accurately and firmly attached to the engine 14 by the mounting structure via the mounting body 92.

Therefore, the charge coil 74 can be mounted easily and accurately, and the capacity of the charge coil 74 can be increased due to the multi-pole, so that the power generation capacity can be improved. Further, the cylindrical portion 94 of the mounting body 92 is provided with the insertion hole 100 through which the timing belt 68 wound around the crank pulley 56 is opened, so that the driving of the cam shaft 34 may be affected. Absent.

Further, since the generator 72 is equipped with the multi-pole type charge coil 74 in the limited space,
The number of coil portions 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 enhanced.

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 the second extending portion 98 extending in the center direction on 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 anchor portion 104. 7
The inner diameter D1 of the coil side anchoring portion 108 of
It can be smaller than the inner diameter D3 of 4. Therefore, the effective diameter D6-D1 can be set large, and the power generation capacity of the charge coil 74 can be designed large.

[0035]

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

Therefore, the accuracy and the mounting rigidity of the mounting position of the charge coil of the generator mounted on the engine of the outboard motor to the engine can be improved, and the multi-pole type charge coil can be mounted easily. . As a result, the charge coil can be attached easily and accurately, and the capacity of the charge coil can be increased by increasing the number of poles to improve the power generation capacity. Further, since the insertion hole through which the timing belt wound around the crank pulley is inserted is opened in the cylindrical portion of the mounting body, there is no influence on the driving of the cam shaft.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of a main part of a mounting device for a generator of an outboard motor showing 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.

4 is an enlarged cross-sectional view taken along the line 〓-〓 of 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 of a state in which a charge coil is partially broken as indicated by arrow V in FIG.

7 is a cross-sectional view taken along the line 〓-〓 of FIG.

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 of a state in which a charge coil of a generator showing a conventional example is attached.

FIG. 11 is a perspective view of a mounted state of a flywheel of a conventional generator.

[Explanation of symbols]

 2 Outboard Motor 14 Engine 18 Propeller 20 Cylinder Block 24 Crank Case 32 Cylinder Head 34 Head Cover 36 Cam Shaft 38 Intake Manifold 50 Fuel Injection Valve 56 Crank Pulley 64 Cam Pulley 68 Timing Belt 72 Generator 74 Charge Coil 76 Fly Wheel 78 Core Part 80 Coil portion 82 Rotor 84 Mounting portion 86 Wheel portion 92 Mounting body 94 Cylindrical portion 96 First extension portion 98 Second extension portion 100 Insertion hole 102 Mounting body side first mounting portion 104 Mounting body side Second mounting portion 106 Engine side Anvil part 108 Coil side anchor part 110 Generator cover

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Nobuyuki Shomura, 300 Takatsuka-cho, Hamamatsu-shi, Shizuoka, Suzuki Stock Company (72) Hidehiko Yoshioka, 300, Takatsuka-cho, Hamamatsu-shi, Shizuoka (72) Invention Jiro Saika 300, Takatsuka-cho, Hamamatsu-shi, Shizuoka Suzuki Stock Company

Claims (1)

[Claims] 1. An outboard motor having a generator mounted above a crankshaft centerline of an engine, wherein an outboard motor encloses a crank pulley attached to a crankshaft above the engine crankshaft centerline. A substantially cylindrical mounting body to be mounted on the engine is provided, and an insertion hole through which a timing belt wound around the crank pulley is inserted is opened in the cylindrical portion of the mounting body, and an axial direction of the cylindrical portion of the mounting body is provided. A mounting body side first brazing portion engaged with the engine side brazing portion of the engine is formed and provided on the lower end side, and the charge coil of the generator is provided on the axially upper end side of the cylindrical portion of the mounting body. A mounting device for a generator of an outboard motor, characterized in that a mounting body side second bracing part engaged with the coil side brazing part is formed and provided.