JPH06129258A - Attaching device of electrical parts of outboard engine - Google Patents

Abstract

PURPOSE:To facilitate the arrangement or wiring of respective parts and also to improve the effective use of a space and prevent interference among respective parts by arranging a starter motor in front of an engine and also an intake manifold and an electrical parts holder on both sides of the engine, respectively. CONSTITUTION:In an outboard engine 2, a four cycle engine 36 is arranged in an engine case 20 composed of a lower case 22 and an upper case 24 while its crank shaft is pointed in vertical direction. In this case, a stater motor 50 is arranged in front of the engine 36. And an inlet manifold is arranged on one side of the engine 36, while an electrical parts holder 54 is arranged on the other side. Moreover, a stater relay 56 is arranged in the position of the electrical parts holder 54 near the stater motor 50. And a control unit 60 is arranged in the position of the electrical parts holder 54 on the cylinder head side of the engine 36. Thereby, the arrangement and wiring of respective parts can be facilitated, and also the effective use of a space and the interference prevention can be achieved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting apparatus for electric components of outboard motors, and more particularly, a four-cycle engine is arranged in an engine case composed of a lower case and an upper case with a crankshaft oriented vertically. At the same time, the present invention relates to a mounting device for an electric component of an outboard motor, in which an electric component holder is arranged in an engine case.

[0002]

2. Description of the Related Art Propulsion devices for ships are roughly classified into three types, namely, an inboard engine (inboard engine), an inboard / outboard engine (inboard / outdrive engine), and an outboard motor (outboard engine), depending on the arrangement.

The inboard engine has an engine installed in the vicinity of the center of the ship and rotates a screw by a propeller shaft passing through the ship, and is often used for large ships having a total length of about 10 meters or more.

Further, in the inboard / outboard motor, the engine main body is installed inside the stern body, the drive unit is arranged outside the ship, and the screw is rotated.
It is often used on medium-sized ships of 0 meters or less.

Further, the outboard motor is often used in a small boat having a total length of about 6 meters or less, and is attached to the outside of the stern of the hull. This outboard motor has an engine at the top,
A drive mechanism is built in at the bottom of this engine,
The hull is turned by rotating the entire outboard motor in the left-right direction.

As a mounting device for the electrical components of the outboard motor, there is one disclosed in Japanese Patent Laid-Open No. 3-32998. The outboard motor disclosed in this publication has a casing attached to a hull via a bracket, an engine cover that is removable from the 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 shafts arranged vertically, and a carburetor attached to the intake manifold that communicates with the combustion chamber is provided on one side of the engine, and an oil filter and spark plug are connected to the other side of the engine. And electrical components are provided.

[0007]

By the way, in the conventional equipment for mounting the electrical components of the outboard motor, for example, in the outboard motor equipped with the four-cycle engine in which the carburetor is rarely arranged in the front part of the engine, There is unused space in the front of the engine.

Also, in the outboard motor disclosed in Japanese Patent Laid-Open No. 3-32998 mentioned above, there is an unused space on both sides of the starter motor.

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

Further, even if an attempt is made to utilize the space existing in the front part of the engine, it is difficult to mount it because there is no electric component holder having sufficient strength.

That is, in general, an electrical component has a large size and a large weight, is poor in vibration resistance, and needs to be vibration-proof. Therefore, a conventional electrical component holder does not have a holder for the electrical component. It is obvious that it is difficult to install on the outboard motor.

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

[0013]

Therefore, in order to eliminate the above-mentioned inconvenience, the present invention arranges a four-cycle engine in an engine case consisting of a lower case and an upper case with the crankshaft oriented vertically. In the outboard motor, a starter motor is provided at the front of the engine, an intake manifold is provided at one side of the engine, and an electrical component holder is provided at the other side of the engine. Further, in an outboard motor in which a four-cycle engine is arranged by vertically orienting a crankshaft in an engine case composed of a lower case and an upper case, a starter motor is provided in the front part of the engine and one side of the engine is provided. An intake manifold is provided, an electrical component holder is provided on the other side of the engine, at least a starter relay is provided in the electrical component holder portion near the starter motor, and an electrical component holder portion is provided on the cylinder head side of the engine. It is characterized in that a control unit is provided.

[0014]

According to the invention as described above, when assembling the outboard motor, the starter motor is provided at the front of the engine and the intake manifold is provided at one side of the engine.
An electric component holder is provided on the other side of the engine, and at least a starter relay is arranged in the electric component holder portion near the starter motor, and a control unit is arranged in the electric component holder portion on the cylinder head side of the engine. A holder for electric components having sufficient strength can be arranged.

[0015]

Embodiments of the present invention will be described in detail below 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 mounting the outboard motor 2 on a hull (not shown). A chilled shaft 8 for tilting the outboard motor 2 is attached to the outboard motor holding portion 6.

Further, in the middle unit 4, FIG.
As shown in, the drive shaft 10 is axially supported in the vertical direction. An oil pan 12 is arranged on the upper side near the drive shaft 10, and an exhaust tube 14 is arranged on the lower side.

The drive shaft 10 applies the driving force of a crankshaft 34 of an engine 36, which will be described later, to the gear case
It is transmitted to the propeller 18 via an internal gear (not shown).

A gear case 16 is attached to the lower portion of the middle unit 4. A gear (not shown) connected to the lower end of the drive shaft 10 is accommodated 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 is composed of a lower case 22 and an upper case 24. The upper case 24 has a recessed upper rear portion, and an air inlet 26 that opens upward (upper side in FIG. 2) is formed in the recessed portion.

Furthermore, the concave portion has a cross section of approximately L.
A letter-shaped cover portion 28 is attached. The cover portion 28 is formed with an opening 30 that opens to the rear (left side in FIG. 2) when it is attached to the recessed portion.

In the space 32 formed in the engine case 20, a four-cycle engine 36 is arranged with the crankshaft 34 oriented vertically.

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

A crankshaft 34 is pivotally supported by a crankshaft holding portion 44 on the front portion (right side in FIG. 2) of the cylinder block 38.

Within the cylinder block 38, for example, four cylinders 46 are formed, respectively. A piston 48 is reciprocally disposed in each of the cylinders 46.

The pistons 48 are respectively connected to the crankshaft 34 via connecting rods (not shown), and the cylinder head 40, the pistons 48, and the cylinders 46 form a combustion chamber (not shown).

A starter motor 50 is provided at the front part of the engine 36 (left side in FIG. 1), and
An intake manifold 52 is provided on one side (left side in FIG. 3) of the engine 36, and an electric component holder 54 is provided on the other side (right side in FIG. 3) of the engine 36. Further, at least the starter relay 56, for example, the starter relay 56 and the PTT relay 58 are provided in the holder 54 portion near the starter motor 50, and the control unit (ECU) is provided in the holder 54 portion of the engine 36 on the cylinder head 40 side.
60 is provided.

More specifically, as shown in FIG. 3, the starter motor 50 is mounted on the front portion of the engine 36 by a starter motor bracket 62.

The electrical component holder 54 is shown in FIG.
As shown in FIG. 3, a first boss 64-1 protruding from the cylinder block 38, a second boss 64-2 protruding from the crankshaft holding portion 44 functioning as a crankcase, and a third boss protruding from the starter motor bracket 62. Boss 6
It is attached to 4-3.

Here, the first to third bosses 64-1 and 64-
The attachment state of the plate-shaped holder 54 to the 2, 64-3 is shown in FIG.
Describing the second boss 64-2, the cushion rubber member 68 is mounted in the hole 66 of the holder 54, and the fixing bolt 70 penetrating the cushion rubber member 68 is inserted through the spacer 72 to the second boss 64-2. , The holder 54 is fixed, and a vibration damping function for preventing vibration from the engine 36 side is added.

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

Then, the control unit (E) is provided at the center portion of the other end of 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.
CU) 60 is provided.

Further, as shown in FIG. 1, the boost sensor 76 for detecting the intake pipe pressure is arranged in the upper left portion of the holder 54, and the boost sensor 76 and the control unit (EC
U) 60 is covered with an electrical component cover 78.

Reference numeral 80 indicates the intake manifold 52.
Is a throttle body connected to the upstream side of the valve, 82 is a throttle valve, 84 is a throttle opening sensor that detects the opening of the throttle valve 82, and 86 is an intake air temperature sensor that detects the intake air temperature near the throttle body 80.

Next, the operation will be described.

First, the starter motor 50 used for driving the engine 36 is mounted on the front portion of the engine 36 via a starter motor bracket 62.

Then, the first to third bosses 64-1 and 6
The electrical component holder 54 is attached to 4-2 and 64-3.

At this time, a cushion rubber member 68 is inserted in the hole 66 of the holder 54, and the cushion rubber member 6 is inserted.
A fixing bolt 70 penetrating 8 is engaged with each of the first to third bosses 64-1, 64-2, 64-3 via a spacer 72 to fix the holder 54.

Also, the cushion rubber member 68 to be interposed
Thus, a vibration damping function for preventing transmission of vibration from the engine 36 side to the holder 54 is added.

Further, when the starter relay 56 and the PTT relay 58 are arranged in the holder 54 portion near the starter motor 50, the starter relay 56 is replaced by the PTT relay 5.
8 Place it below.

The control unit (ECU) 60 is arranged at the center of the other end of the engine 36, which is on the rear side (right side in FIG. 1) of the mounting positions of the starter relay 56 and the PTT relay 58. Control unit (ECU)
The electrical component cover 78 covers the 60 and the boost sensor 76.

As a result, the holder 54 portion near the starter motor 20, which has conventionally been an empty space, can be effectively used as a space for disposing the starter relay 56 and the PTT relay 58, which contributes to downsizing of the outboard motor. Can contribute.

Further, by mounting the electric component holder 54 on the third boss 64-3 having a strength protruding from the starter motor bracket 62, the holder 54 can have a sufficiently strong structure without improving its rigidity. You can
The holder 54 can be made of a relatively lightweight material such as resin, and the weight can be reduced.

Further, by arranging the electric component holder 54 in the outboard motor 2, a large control unit for performing fuel injection control, ignition timing control, fail-safe control at the time of failure of various sensors, and the like ( ECU) 60, boost sensor 76, starter relay 56, PTT relay 58
Various relays, etc., large-sized electrical components, etc. can be easily arranged and wired, and a cushioning rubber member 68 can be provided to provide a vibration-proof structure, which is practically advantageous.

Further, by disposing the starter relay 56 in the holder 54 portion near the starter motor 50, when the starter motor 50 and the starter relay 56 are connected by the starter cable 74 through which a large current flows, the starter cable 56 can be connected. 74 is a control unit (ECU) 6
The control unit (ECU) 60 is arranged at a separated position that does not interfere with 0, and the malfunction of the control unit (ECU) 60 due to interference can be prevented, and the starter cable 74 can be shortened, which has excellent noise resistance and is thick and difficult to handle. The starter cable 74 can be easily wired in a short state.

In addition, since large electric components such as the control unit (ECU) 60 can be unitized,
Excellent in assembling, maintenance and inspection.

Furthermore, since a large amount of large electric components such as the control unit (ECU) 60 can be covered with the single electric component cover 78, the waterproof property is excellent and the service life of the electric components can be extended. At the same time, one cover can be easily manufactured, the cost can be reduced, and it is economically advantageous.

[0048]

As described above in detail, according to the present invention, the engine of an outboard motor having a four-cycle engine with a crankshaft oriented vertically is provided in an engine case consisting of a lower case and an upper case. Since the starter motor is installed in the front part, the intake manifold is installed on one side of the engine, and the electrical component holder is installed on the other side of the engine, if the holder is attached to the strong boss protruding from the engine side, the holder The structure can be made sufficiently solid without improving the rigidity of the holder, and the holder can be made of a relatively lightweight material such as a resin, and the weight can be reduced. Further, by arranging the electric component holder inside the outboard motor, a large control unit for performing fuel injection control, ignition timing control, and fail-safe control at the time of failure of various sensors, various relays such as starter relays, etc. The arrangement and wiring of large electric components can be easily performed, and if a cushion rubber member is provided at the time of arrangement, a vibration-proof structure can be obtained, which is practically advantageous.

A starter motor is provided at the front of the engine of an outboard motor in which a four-cycle engine is arranged with the crankshaft oriented vertically in the engine case consisting of the lower case and the upper case. An intake manifold is installed in the engine, an electrical component holder is installed on the other side of the engine, and at least a starter relay is installed in the electrical component holder area near the starter motor, and the electrical component holder area on the cylinder head side of the engine is controlled. Since the unit is installed, it is possible to effectively use at least the holder portion near the starter motor, which was an empty space, as the installation space for the starter relay.
This can contribute to downsizing of the outboard motor. Further, by arranging the starter relay in the holder portion near the starter motor, when connecting the starter motor and the starter relay by the starter cable through which a large current flows, the starter cable is provided in a separated portion that does not interfere with the control unit. It is possible to prevent malfunction of the control unit due to the interference, and it is possible to shorten the starter cable. The starter cable is excellent in noise resistance and is thick and difficult to handle. Furthermore, the large-sized electrical components such as the control unit can be unitized, which makes them excellent in assembling, maintenance and inspection. Furthermore, if a large amount of large electrical components such as a control unit is covered with a single electrical component cover, it is excellent in waterproofness, the service life of the electrical components can be extended, and one cover can be easily manufactured. The cost can be reduced and it is economically advantageous.

[Brief description of drawings]

FIG. 1 is a schematic enlarged view of a holder for electrical components 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.

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

FIG. 5 is a plan view showing a state in which an upper case of the outboard motor is removed.

FIG. 6 is a schematic enlarged view of a portion of FIG.

[Explanation of symbols]

 2 Outboard Motor 4 Middle Unit 6 Outboard Motor Holding Section 8 Chilled Shaft 10 Drive Shaft 12 Oil Pan 16 Gear Case 18 Propeller 20 Engine Case 22 Lower Case 24 Upper Case 34 Crank Shaft 36 Engine 38 Cylinder Block 40 Cylinder Head 42 Cylinder Head Cover 46 Cylinder 50 Starter Motor 52 Intake Manifold 54 Holder for Electrical Components 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 Parts Cover

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[Procedure amendment]

[Submission date] December 8, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 6]

[Figure 4]

[Figure 5]

 ─────────────────────────────────────────────────── ─── 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 (2)

[Claims] 1. A crankshaft is vertically oriented in an engine case composed of a lower case and an upper case.
In an outboard motor having a cycle engine, a starter motor is provided at a front portion of the engine, an intake manifold is provided at one side of the engine, and an electrical component holder is provided at the other side of the engine. Mounting equipment for electrical components of outboard motors. 2. A crankshaft is vertically oriented in an engine case including a lower case and an upper case.
In an outboard motor equipped with a cycle engine, a starter motor is provided at the front of the engine, an intake manifold is provided at one side of the engine, and an electrical component holder is provided at the other side of the engine. At least a starter relay is arranged in the parts holder part, and a control unit is arranged in the electric parts holder part on the cylinder head side of the engine.