JP3449191B2 - Outboard oil level gauge - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil level gauge for an outboard motor. 2. Description of the Related Art A four-stroke engine mounted on an outboard motor or the like is provided with an oil level gauge for checking the level of liquid lubricating oil stored in an oil pan and dirt. As a general arrangement example of an oil level gauge, for example, as shown in Japanese Patent Application Laid-Open No. 8-334010, an oil level gauge is arranged behind a cylinder head 15. There was a problem that it would be extended. [0004] Further, as disclosed in Japanese Patent Application Laid-Open No. Hei 8-100623, for example, an oil level gauge passage is formed in a cylinder head to enable inspection of lubricating oil from above the engine. There was a problem that the structure became complicated and the oil level gauge became long and it was difficult to use. [0005] As described above, if the oil level gauge is arranged at the rear or upper part of the engine, various inconveniences occur. Therefore, it is considered that the oil level gauge is arranged at the side of the engine. Can be However, since an intake system, a fuel supply system, an electric system and the like are arranged intricately on the side of the engine, if the oil level gauge is arranged on the side of the engine, the width of the engine is inevitably reduced. It is undesired to increase. Also, the work of fixing the oil level gauge to the engine side is inferior in assemblability because other devices hinder the work. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide an outboard motor oil level gauge capable of downsizing the engine even if the oil level gauge is arranged on the side of the engine. Aim. Another object of the present invention is to provide an oil level gauge for an outboard motor with improved assemblability. [0010] An engine covered by an engine cover which can be divided into upper and lower parts, an oil pan below a cylinder block constituting the engine, and an intake branch are provided in a vertical direction. In an outboard motor in which the intake manifold is disposed on one side of the cylinder block, an oil level gauge in which a gauge body having a handle is inserted in a gauge guide is disposed on a side of the cylinder block on which the intake manifold is disposed. ,
Place the base end of the gauge guide on the side of the cylinder block
As well as mounting to plug from above part, the other end of the gauge guide, extends through between the bottom of the intake branch and the cylinder block to the vicinity of the divided surface of the engine cover, the downstream end of the intake branch Connect
Fixed to the flange . Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a left side view of an outboard motor to which the present invention is applied. The outboard motor 1 includes an engine holder 2 and is mounted on a transom 4a of a hull 4 via a bracket 3 attached to the engine holder 2. An engine 5 is installed on the upper part of the engine holder 2, and its periphery is covered with an engine cover 6. The engine cover 6 is configured to be vertically splittable into an upper cover 6a and a lower cover 6b. The periphery of the engine holder 2 and the lower part of the engine 5 are covered by a lower cover 6b, and the upper part of the engine 5 is covered by an upper cover 6a. In the engine 5, a crankshaft 7 is provided vertically so as to be directed substantially vertically. A drive shaft housing 9 is provided below the engine holder 2 with an oil pan 8 interposed therebetween. A drive shaft 10 connected to a lower end of the crankshaft 7 extends downward in the oil pan 8 and the drive shaft housing 9, and a bevel gear 12 and a propeller in a gear case 11 provided at a lower portion of the drive shaft housing 9. It is configured to drive a propeller 14 via a shaft 13. FIG. 2 is an enlarged left side view of the engine 5 of FIG. As shown in FIG.
Is, for example, a water-cooled four-cycle four-cylinder engine, which is configured by combining a cylinder head 15, a cylinder block 16, a crankcase 17, and the like. Electric components (not shown) around the engine 5
And an intake device 18 and a fuel supply device 19. The intake device 18 mainly includes an intake manifold 2 including a throttle body 20, a surge tank 21, and a plurality of intake branches 22 extending from the surge tank 21 for each cylinder.
And the engine 5 together with the fuel supply device 19.
, On the left side in the traveling direction in this embodiment. Note that the electrical components are collectively arranged on the opposite side of the intake device 18. The throttle body 20 is arranged, for example, in front of the crankcase 17 of the engine 5, and a surge tank 21 is juxtaposed beside the throttle body 20.
In addition, each intake branch 22 of the intake manifold 23 is arranged in the vertical direction on the side of the cylinder block 16, in this embodiment, on the left side in the traveling direction. The downstream ends of the intake branches 22 are connected to form a flange 24, which is connected to the cylinder head 15.
Linked to FIG. 3 is a sectional view taken along the line III-III in FIG. As shown in FIGS. 2 and 3, an oil level gauge 25 is provided on the left side surface of the cylinder block 16, that is, on the side where the intake branches 22 of the intake manifold 23 are arranged. This oil level gauge 25
Is for inspecting the liquid level and dirt of the lubricating oil stored in the oil pan 8, and mainly has a stick-shaped gauge body 26 and a pipe-shaped gauge guide 27. The base end of the gauge guide 27 is inserted into a gauge port 28 formed in the cylinder block 16 so as to be inserted from above, and the other end of the gauge guide 27 is connected, for example, to the lowermost intake branch 22 and the cylinder. It extends between the block 16 and the vicinity of the division surface 29 of the engine cover 6, and is fixed to, for example, a flange 24 of the intake manifold 23 with a bolt 30 or the like. Then, the gauge body 26 having the handle 31 is inserted into the gauge guide 27. Next, the operation of this embodiment will be described. The gauge guide 27 constituting the oil level gauge 25 is connected to the intake branch 2 of the intake manifold 23.
By arranging between the cylinder block 2 and the cylinder block 16, the width of the engine 5 is not increased, and the engine 5 is made compact. If the gauge guide 27 is fixed to, for example, the flange 24 of the intake manifold 23, the gauge guide 2 can be mounted after the intake manifold 23 is assembled.
7 can be easily fixed, and the assembling property is improved. As described above, according to the oil level gauge of the outboard motor according to the present invention, the intake manifold having the oil pan below the cylinder block constituting the engine and the intake branch is provided. An oil level gauge having a gauge body and a gauge guide is arranged on the side of the cylinder block where the intake manifold is arranged, and the outboard motor is arranged on one side of the cylinder block. And the cylinder block, the oil level gauge can be arranged without increasing the width of the engine,
The engine can be made compact. Further, since the gauge guide is fixed to the intake manifold, the oil level gauge can be easily fixed and the assemblability can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a left side view of an outboard motor showing one embodiment of an outboard motor oil level gauge according to the present invention. FIG. 2 is an enlarged left side view of an engine part of FIG. 1; FIG. 3 is a sectional view taken along the line III-III in FIG. 2; [Description of Signs] 1 Outboard motor 5 Engine 8 Oil pan 16 Cylinder block 22 Intake branch 23 Intake manifold 24 Flange 25 Oil level gauge 26 Gauge body 27 Gauge guide

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F01M 11/12 B63H 20/00 F02B 67/00 F02M 35/16

Claims (1)

(57) [Claim 1] An engine covered by an engine cover that can be divided vertically and an oil pan below a cylinder block that constitutes the engine, and an intake branch is vertically moved. In the outboard motor in which the intake manifold provided for the cylinder block is arranged on one side of the cylinder block, the intake manifold 23 of the cylinder block 16 is provided.
3 having a handle on the gauge guide 27 on the side where
Oil level gauge 25 with 1 gauge body 26 inserted
Is mounted so that the base end of the gauge guide 27 is inserted into the side of the cylinder block 16 from above, and the other end of the gauge guide 27 is connected to the lowermost intake branch 22. And a flange extending to the vicinity of the dividing surface 29 of the engine cover 6 through the space between the cylinder block 16 and the downstream end of the intake branch 22.
An oil level gauge for an outboard motor fixed to 24 .