JP3077423B2 - Mounting equipment for electrical components of outboard motors - 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 electric parts of an outboard motor, and more particularly to a four-stroke engine having a crankshaft vertically oriented in an engine case and an electric device mounted in the engine case. The present invention relates to a device for mounting an electrical component of an outboard motor provided with a component holder.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 3-29998 discloses an apparatus for mounting electrical components of an outboard motor. An outboard motor disclosed in this publication includes a casing attached to a hull via a bracket, an engine cover detachable on an upper surface of the casing, a crankshaft and a cam in an engine room formed by the casing and the engine cover. It consists of an engine with the shaft arranged up and down.A carburetor mounted on the intake manifold communicating with the combustion chamber is provided on one side of the engine, and connected to the oil filter and ignition plug on the other side of the engine Electrical components. The above-mentioned Japanese Patent Laid-Open Publication No. 3-32998
In the publication disclosed in Japanese Patent Laid-Open Publication No. H08-209, a dead space, which is a space, occurs on both left and right sides (upper and lower parts in FIG. 3) of the starter motor in plan view.

[0003]

By the way, in a conventional outboard motor mounting device, for example, an outboard motor provided with a four-cycle engine in which a carburetor is rarely arranged at the front of the engine, is known. There is a dead space in front of the engine that is unused space.

Also, in the outboard motor disclosed in the above-mentioned JP-A-3-32998, the left and right sides of the starter motor in plan view (upper and lower parts in FIG. 3).
Has a dead space which is an unused space.

However, in the dead space existing on the left and right sides of the starter motor of the outboard motor disclosed in Japanese Patent Application Laid-Open No. 3-32998, it is not possible to arrange a large number of sophisticated electrical components. is there.

Further, even if an attempt is made to utilize a dead space existing in front of the engine, there is a disadvantage that mounting is difficult because there is no holder for electrical components having sufficient strength.

That is, in general, electrical components are large and heavy, have poor vibration resistance, and require vibration proof. Therefore, there is no conventional electrical component holder having sufficient strength. Obviously, it is difficult to install them on outboard motors.

As a result, it has been desired to realize an outboard motor provided with a holder for electrical components having sufficient strength.

[0009]

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned disadvantages, the present invention arranges a crankshaft in an engine case so as to be vertically oriented, and arranges the crankshaft behind the crankshaft with respect to the traveling direction. A cylinder and a cylinder head of the cylinder block are provided, a starter motor is provided on the front side of the crankshaft, an intake manifold is provided on one side of the cylinder, and electrical components are stored inside the other side of the cylinder. In an outboard motor equipped with a four-stroke engine provided with an electrical component holder covered with a component cover, the other end of the intake manifold having one end connected to a cylinder head is extended forward along a side wall of the cylinder block. With at least a part of the other end of the intake manifold is located forward of the starter motor,
The other end of the intake manifold is disposed outside one side of the starter motor, and the front part of the electrical component holder is disposed outside the other side of the starter motor. A starter relay is disposed at a symmetrical position, and a starter relay is disposed at a front side position in the electrical component holder and at a front position near the starter motor, and a control unit is disposed at a position near the cylinder head behind the starter relay. It is characterized by having been established.

[0010]

According to the invention described above, when assembling the outboard motor, the crankshaft is disposed in the engine case so as to be vertically oriented, and the cylinder block is disposed rearward of the crankshaft with respect to the traveling direction. A cylinder and cylinder head are provided, a starter motor is provided on the front side of the crankshaft, an intake manifold is provided on one side of the cylinder, and electrical components are stored inside the other side of the cylinder and covered with an electrical component cover. Provided a holder for electrical components,
The other end of the intake manifold having one end connected to the cylinder head extends forward along the side wall of the cylinder block, and at least a part of the other end of the intake manifold is located forward of the starter motor, and The other end is disposed outside one side of the starter motor, and a front portion of the electrical component holder is disposed outside the other side of the starter motor at a position substantially symmetrical with the other end of the intake manifold. A starter relay is disposed at a forward position in the electrical component holder and in a forward position near the starter motor, and a control unit is disposed at a position near the cylinder head behind the starter relay. The dead space generated on the outside of the side and the outside of the other side is effectively used.

[0011]

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

1 to 6 show an embodiment of the present invention. In FIG. 2, 2 is an outboard motor, and 4 is a middle unit. The middle unit 4 of the outboard motor 2 is provided with an outboard motor holding portion 6 for attaching the outboard motor 2 to a hull (not shown). A chilled shaft 8 for tilting the outboard motor 2 is attached to the outboard motor holding section 6.

In the middle unit 4, FIG.
As shown in FIG. 1, the drive shaft 10 is supported vertically. An oil pan 12 is provided on the upper side near the drive shaft 10, and an exhaust tube 14 is provided on the lower side.

The drive shaft 10 transmits a driving force of a crankshaft 34 of an engine 36 described later to the gear case 16.
This is transmitted to the propeller 18 via an internal gear (not shown).

A gear case 16 is mounted below the middle unit 4. A gear (not shown) connected to the lower end of the drive shaft 10 is housed in the gear case 16. A propeller 18 connected to the gear (not shown) is rotatably attached to the gear case 16.

Further, on the upper part of the middle unit 4,
The engine case 20 is attached. The engine case 20 includes a lower case 22 and an upper case 24. The upper case 24 is recessed at the rear with respect to the upper traveling direction, and an air inlet 26 that opens upward (upward in FIG. 2) is formed in the recessed portion.

Further, the cross section of the recessed portion is substantially L
A letter-shaped cover 28 is attached. The cover 28 has an opening 30 that opens rearward (to the left in FIG. 2) with respect to the traveling direction when the cover 28 is attached to the recessed portion.

A four-cycle engine 36 is disposed in a space 32 formed in the engine case 20 with a crankshaft 34 directed vertically.

The cylinder block 38 of the engine 36
Is disposed substantially at the center of the space 32. A cylinder head 40 and a cylinder head cover 42 are sequentially attached to the rear (left side in FIG. 2) of the cylinder block 38.

In front of the cylinder block 38 (right side in FIG. 2), a crankshaft 34 is supported by a crankshaft holding portion 44. The front side (right side in FIG. 2) of the crankshaft holding portion 44 is closed, forming a crankcase 44a.

For example, four cylinders 46 are formed in the cylinder block 38, respectively. Each of the cylinders 46 is provided with a piston 48 so as to be able to reciprocate.

The piston 48 is connected to the crankshaft 34 via a connecting rod (not shown), and a combustion chamber (not shown) is formed by the cylinder head 40, the piston 48, and the cylinder 46.

The front side of the engine 36 (FIG. 1)
On the left side, and the lower side in FIG.
0, and an intake manifold 52 is provided on one side (left side in FIGS. 3 and 5) of the cylinder 46 of the engine 36.
On the other side of the cylinder 46 of the engine 36 (on the right side in FIGS. 3 and 5), there is provided an electric component which contains a starter relay 56 and a PTT relay 58 which are electric components and which is covered with an electric component cover 78 described later. A component holder 54 is provided.

A rear side (upper side in FIG. 5) which is one end of the intake manifold 52 is connected to the cylinder head 40, and a front side (lower side in FIG. 5) which is the other end of the intake manifold 52 is provided. , Extending forward along the side wall of the cylinder block 38, and at least part of the front side (the lower side in FIG. 5) which is the other end of the intake manifold 52 is connected to one side of the starter motor 50 (the left side in FIG. 5). ) Place outside.

Further, the front (lower side in FIG. 5) portion of the electrical component holder 54 is placed outside the other side (right side in FIG. 5) of the starter motor 50 so that the intake manifold 52
Is disposed at a position substantially symmetrical with a front side (lower side in FIG. 5) which is the other end of.

Further, a starter relay 56 is disposed at a front position in the electrical component holder 54 and at a front position near the starter motor 50, and a position near the cylinder head 40 located behind the starter relay 56. The control unit (ECU) 60 is disposed.

The starter motor 50 is provided in FIG.
As shown in FIG. 5, the starter motor bracket 62 is attached to the front of the engine 36.

Further, the electrical component holder 54 is provided as shown in FIG.
As shown in FIG. 5, the other side of the engine 36 (the right side in FIG. 5)
For example, a first boss 64-1 projecting from the cylinder block 38 and a second boss 64 projecting from the crankshaft holding portion 44 functioning as a crankcase.
-2 and a third boss 64-3 projecting from the starter motor bracket 62.

Here, the electrical component holder 54 is connected to a boss on the side of the engine 36, for example, the first to third bosses 64-.
1, 64-2, 64-3 is fixed via a cushion rubber member 68, and the cushion rubber member 68 prevents transmission of vibration from the engine 36 side to the electrical component holder 54.

That is, the first to third bosses 64-1
The state of attachment of the plate-shaped electrical component holder 54 to the electrical component 64-2, 64-3 will be described with reference to the second boss 64-2 in FIG. The fixing bolt 70 penetrating through the cushion rubber member 68 is attached via the flat washer 72 to the second
By engaging with the boss 64-2, the electric component holder 54 is fixed, and a vibration damping function for preventing vibration from the engine 36 side is added.

The starter relay 56 is a PTT relay 5
8 and is connected to the starter motor 50 via a starter cable 74.

The rear side of the mounting position of the starter relay 56 and the PTT relay 58 (right side in FIG. 1)
The control unit (ECU) 6
0 is arranged.

As shown in FIG. 1, a boost sensor 76 for detecting the intake pipe pressure is provided at an upper left portion of the electrical component holder 54. The boost sensor 76 and a control unit (ECU) 60 are provided with an electrical component cover. 78.

Reference numeral 80 denotes the intake manifold 52.
A throttle body connected to a rear side (upper side in FIG. 5) which is one end which is an upstream side of the throttle body, 82 is a throttle valve, 84 is a throttle opening sensor for detecting the opening of the throttle valve 82, and 86 is a throttle body 8
The intake air temperature sensor detects an intake air temperature near zero.

Next, the operation will be described.

First, a starter motor 50 used for driving the engine 36 is mounted via a starter motor bracket 62 on the front side of the engine 36 (left side in FIG. 1, lower side in FIG. 5).

An electrical component holder 54 is mounted on the first to third bosses 64-1, 64-2, and 64-3 on the side of the engine 36.

At this time, the hole 6 of the electrical component holder 54 is
6 is provided with a cushion rubber member 68, and a fixing bolt 70 penetrating the cushion rubber member 68 is attached to a flat washer 7.
2, the first to third bosses 64-1, 64-2, 6
4-3, the electrical component holder 54 is fixed.

The cushion rubber member 68 to be interposed is also provided.
Accordingly, an anti-vibration function for preventing transmission of vibration from the engine 36 to the electrical component holder 54 is added.

Further, when the starter relay 56 and the PTT relay 58 are disposed at the electrical component holder 54 near the starter motor 50, the starter relay 56
It is arranged below the T relay 58.

The rear side of the mounting position of the starter relay 56 and the PTT relay 58 (the right side in FIG. 1).
The control unit (ECU)
A control unit (ECU) 60 and a boost sensor 76 are covered with an electrical component cover 78.

As a result, both sides of the starter motor 20 which have conventionally been a dead space which is an empty space,
That is, the other end (the lower side in FIG. 5) of the intake manifold 52 can be disposed outside one side of the starter motor 20, and a starter, which is an electrical component, is internally provided outside the other side of the starter motor 20. Relay 56 and PTT relay 5
8 can be accommodated and the front part of the electrical component holder 54 covered with the electrical component cover 78 can be disposed, dead space can be effectively used, and the outboard motor can be downsized.

By mounting the electrical component holder 54 on the third boss 64-3 having a strength protruding from the starter motor bracket 62, the electrical component holder 5 is mounted.
4 can be made sufficiently rigid without increasing the rigidity, and the electrical component holder 54 can be formed of a relatively lightweight material such as resin, which can achieve weight reduction. is there.

Further, by disposing the electric component holder 54 in the outboard motor 2, a large control unit (not shown) for performing fuel injection control, ignition timing control, and fail-safe control when various sensors fail. ECU) 60, boost sensor 76, starter relay 56, PTT relay 58
The arrangement and wiring of various relays, large electrical components, and the like can be easily performed, and a vibration-proof structure can be obtained only by interposing the cushion rubber member 68, which is practically advantageous.

Further, a starter relay 56 and a PT
When arranging the T relay 58, the starter relay 56 is arranged below the PTT relay 58, and the engine 36 on the rear side (right side in FIG. 1) of the mounting position of the starter relay 56 and the PTT relay 58. The starter cable 74 is connected to the control unit (ECU) 60 when the starter motor 50 and the starter relay 56 are connected by the starter cable 74 through which a large current flows, by arranging the control unit (ECU) 60 in the section. Since the control unit (ECU) 60 is disposed at a distant place where no interference occurs, malfunction of the control unit (ECU) 60 due to the interference can be prevented, and the starter cable 74 can be shortened. A simple starter cable 74 can be easily wired in a short state.

Also, since large-sized electrical components such as the control unit (ECU) 60 can be unitized,
Excellent ease of assembly and maintenance and inspection.

Further, since a large number of large electrical components such as the control unit (ECU) 60 can be covered with one electrical component cover 78, the waterproofness is excellent and the service life of the electrical components can be extended. In addition, the manufacture of one cover is easy, the cost can be reduced, and it is economically advantageous.

Further, when the electrical component holder 54 is provided on the side of the engine 36, bosses, for example, first to third bosses 64-1, 64-2 and 64-3 are provided on the side of the engine 36, A cushion rubber member 68 is attached to the hole 66 of the component holder 54, and fixing bolts 70 penetrating the cushion rubber member 68 are connected to the first to third bosses 64-1, 64-2, 64-via flat washers 72. By fixing the electrical component holder 54 by engaging with the electronic component 3, a vibration damping function for preventing vibration from the engine 36 side can be added,
A vibration-proof structure can be realized, which is practically advantageous.

[0049]

As described in detail above, according to the present invention, the crankshaft is disposed in the engine case so as to be vertically oriented, and the cylinder of the cylinder block and the cylinder are located rearward of the crankshaft with respect to the traveling direction. Head and a starter motor in front of the crankshaft,
Further, an outboard motor equipped with a four-cycle engine provided with an intake manifold on one side of the cylinder and a holder for electrical parts housed therein and covered with electrical parts covers on the other side of the cylinder is provided with one end. The other end of the intake manifold connected to the cylinder head extends forward along the side wall of the cylinder block, and at least a part of the other end of the intake manifold is located forward of the starter motor, and the other end of the intake manifold Is disposed outside one side of the starter motor, and the front part of the electrical component holder is disposed outside the other side of the starter motor at a position substantially symmetrical with the other end of the intake manifold. A starter relay is provided at a front position in the component holder and at a front position near the starter motor, and the starter relay is located behind the starter relay. Since the control unit is located near the cylinder head, the other end of the intake manifold should be placed on both sides of the starter motor, which was previously a dead space that is an empty space, that is, outside one side of the starter motor. In addition to the above, the front part of the electrical component holder covered with the electrical component cover with the electrical components housed inside can be disposed outside the other side of the starter motor, so that dead space can be effectively used. It can contribute to downsizing of the outboard motor. Further, by disposing the electrical component holder in the outboard motor, a large control unit for performing fuel injection control and ignition timing control, and fail-safe control when various sensors fail, a boost sensor,
Various relays such as starter relays and PTT relays, and large-sized electrical components can be easily arranged and wired. Further, a starter relay is disposed at a front side position in the electric component holder and at a front position near the starter motor,
The control unit is located near the cylinder head behind the starter relay, so when the starter motor and the starter relay are connected by a starter cable through which a large current flows, the starter cable does not interfere with the control unit. To prevent malfunction of the control unit due to interference,
The starter cable can be shortened, has excellent noise resistance, and can be easily wired in a short state with a thick and difficult-to-manage starter cable. Furthermore, since large electrical components such as a control unit can be unitized, the assemblability and the maintenance and inspection are excellent.
In addition, since a large number of large electrical components such as a control unit can be covered with one electrical component cover, the waterproofness is excellent, the service life of the electrical components can be extended, and the production of one cover can be achieved. It is easy, the cost can be reduced, and it is economically advantageous.

[Brief description of the drawings]

FIG. 1 is a schematic enlarged view of an electrical component holder showing an embodiment of the present invention.

FIG. 2 is a schematic view of an outboard motor.

FIG. 3 is an enlarged front view of an engine portion of the outboard motor.

FIG. 4 is a sectional view taken along line IV-IV of FIG.

FIG. 5 is a plan view of the outboard motor with an upper case removed.

FIG. 6 is a schematic enlarged view of a portion VI in FIG. 5;

[Explanation of symbols]

 2 Outboard motor 4 Middle unit 6 Outboard motor holder 8 Chilled shaft 10 Drive shaft 12 Oil pan 16 Gear case 18 Propeller 20 Engine case 22 Lower case 24 Upper case 34 Crankshaft 36 Engine 38 Cylinder block 40 Cylinder head 42 Cylinder head cover 46 Cylinder Reference Signs List 50 Starter motor 52 Intake manifold 54 Holder for electrical component 56 Starter relay 60 Control unit (ECU) 62 Starter motor bracket 64-1 First boss 64-2 Second boss 64-3 Third boss 68 Cushion rubber member 78 Electrical component 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 Suzuki Corporation, Takatsukacho, Hamamatsu City, Shizuoka Prefecture (56) References JP-A-3-32998 (JP, A) JP-A-59-190086 (JP, A) 61456 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F02B 67/00 F02B 77/00 F02D 35/00 F02N 11/00 B63H 21/26

Claims (2)

(57) [Claims] 1. A crankshaft is disposed in an engine case so as to be vertically oriented, and the crankshaft is positioned with respect to the traveling direction.
Rear cylinder block cylinder and cylinder head
And a starter on the front side of the crankshaft.
A motor is provided, and an intake manifold is provided on one side of the cylinder.
Electrical components inside the cylinder on the other side.
The electrical component holder covered with the electrical component cover.
In the outboard motor equipped with the provided 4-cycle engine,
One end of the intake manifold connected to the cylinder head
The other end extends forward along the side wall of the cylinder block
And at least part of the other end of the intake manifold
Positioned in front of the starter motor and
Place the other end of the manifold outside one side of the starter motor
The front part of the electrical component holder is
Outside the other side of the motor, the other end of the intake manifold
And in a substantially symmetrical position, and further in the electrical component holder
Move to the front position and the front position near the starter motor.
A starter relay is provided and the starter relay is
A mounting device for an electrical component of an outboard motor, wherein a control unit is disposed at a position near a cylinder head behind the rim . 2. The electric component holder according to claim 1, further comprising:
The cushion is fixed to the boss via a cushion rubber member.
Rubber member to the electrical component holder on the engine side
2. The outboard motor according to claim 1, wherein transmission of the vibrations is prevented.
Equipment for mounting components.