JPH0138248Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to an improvement of a rocker cover for an internal combustion engine, particularly to its fuel filler port.

(Technical Field) Examples of conventional rocker covers include those shown in Figures 1 and 2.
127310). In the figure, reference numeral 1 denotes a rocker cover that is mounted and fixed on the cylinder head 2 and covers the rocker arm and the like. This rocker cover 1 has a recess 3 formed at one corner of its upper surface, and this recess 3 is gently inclined downward toward the side wall of the rocker cover 1. The recess 3 is provided with an oil filler port 4, which is formed by protruding a portion of the recess 3 into a cylindrical shape from the bottom surface to form a cap screwing portion 5. Also,
A fuel supply cap 6 is screwed onto this cap screwing portion 5.

However, in the case of such a conventional rocker cover 1, engine lubricating oil (hereinafter referred to as
When refueling (referred to as oil), the cap threaded portion 5 was protruded from the bottom surface of the recess 3.
The fallen oil flows along the slope,
This has the problem of staining the side walls of the cover 1, as well as the side walls of the block, head, etc., and is uneconomical. On the other hand, when mounted on an engine vehicle, there was a problem in that the hood located above the engine and the fuel cap screwed onto the rocker cover came into contact with each other.

(Purpose of the invention) Therefore, the present invention is designed so that the bottom surface of the recess of the rocker cover and the upper end surface of the oil filler port are on the same plane, thereby allowing the oil spilled during injection to flow into the oil filler port. Its purpose is to prevent contamination of various parts with oil and waste of oil, as well as to prevent contact between the hood above the engine and the oil supply cap screwed onto the rocker cover.

(Structure of the invention) The present invention provides a rocker cover for an internal combustion engine that is installed on the upper part of the engine mounted below the hood of a vehicle and is equipped with a fuel supply cap. The recess has a substantially horizontal bottom surface when mounted on the vehicle, and has a side wall facing upward around the entire circumference, and has an engine lubricating oil filler port on the bottom surface, and a bank portion having a predetermined height higher than the bottom surface around the filler port. A cylindrical oil supply cap threaded portion protruding toward the inside of the rocker cover is integrally formed in the fuel supply port.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIGS. 3 and 4 are diagrams showing an embodiment of the present invention.

First, the configuration will be explained. FIG. 3 is an overall view of the rocker cover 11, and FIG. 4 is a cross-sectional view of its oil filler port. In the figure, reference numeral 11 indicates a rocker cover, and this rocker cover 11 is placed and fixed on a cylinder head (not shown) and is formed in a box shape to cover a rocker arm and the like. This lotuka cover 1
A recess 12 is formed in the upper wall and front part of the cover 1, and the bottom surface 13 of the recess 12 is formed into a substantially circular shape so as not to interfere with the rocker arm or the like inside the cover. The top surface of the cover and the bottom surface 13 of the recess 12
are connected to each other by an inclined surface 14, and a fuel filler port 15 is provided on the bottom surface 13. This fuel filler port 15 has a cylindrical cap screwing portion 1 approximately in the center of the circular bottom surface 13.
6 protrudes downward, and a fuel supply cap (not shown) is screwed into this cap screwing portion 16. Here, as shown in FIG.
A bank portion 17 is formed which is slightly higher than the upper surface of the 3. Note that since the engine body is normally mounted on a vehicle with a slight inclination, the bottom surface 13 is formed to form a substantially horizontal surface when mounted on the vehicle.

Next, the action will be explained.

When oil is supplied from the oil filler port 15, the oil may spill around the oil filler port 15, that is, into the recess 12. This oil travels along the inclined surface 14, flows into the oil filler port 15, and falls into the rocker cover 11. In other words, oil is completely prevented from leaking to the cover side wall or the like.

Furthermore, when refueling oil from the oil filler port 15, remove the oil filler cap and use the recess 12 before refueling.
When wiping off the dust accumulated in the rocker cover 11, the bank part 17 prevents the dust from falling into the rocker cover 11.

FIG. 6 shows a state in which an internal combustion engine using this rocker cover 11 is installed vertically in a vehicle. In this invention, the upper part of the engine is covered by a hood tilted forward as shown by the solid line B, and the recess 12
Since the cylindrical refueling cap screwing part 16 protruding toward the inside of the rocker cover from the bottom surface 13 of the rocker cover is provided integrally with the rocker cover, when screwed on, the refueling cap 17 fits in the recess 12 and the rocker cover 1
1, the height of the hood (indicated by solid line B) can be made lower than that of a conventional hood (indicated by broken line A).

(Effects of the invention) As described above, according to the invention, in the rocker cover of an internal combustion engine that is provided above the engine mounted below the hood of a vehicle and is equipped with a fuel supply cap, the upper wall portion of the rocker cover A recess is provided at the recess, and the recess has a substantially horizontal bottom surface when mounted on the vehicle, and a side wall facing upward around the entire circumference, and the refueling port has a cylindrical refueling cap threaded portion that protrudes toward the inside of the rocker cover. Since it is integrally formed with the fuel filler cap, it is possible to prevent the hood and the fuel filler cap from coming into contact with each other, and the height of the hood can be lowered. At the same time, oil spilled around the fuel filler port during refueling is prevented from flowing out through the side wall. Since the oil flows into the oil filler port, it is possible to prevent oil from staining the engine wall and from wasting oil. In addition, since a bank with a predetermined height higher than the bottom surface is provided around the fuel filler port on the bottom of the recess, when wiping off the oil and dust that has accumulated in the recess before screwing the fuel cap, the dust will be removed from the bank. It is also possible to prevent the fuel from falling into the engine through the fuel filler port.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part of a conventional internal combustion engine showing a state in which a rocker cover is attached, and FIG. 2 is a sectional view of a main part thereof. FIG. 3 is a perspective view showing one embodiment of the rocker cover for an internal combustion engine according to the present invention, FIG. 4 is a cross-sectional view thereof, and FIG. 5 is a diagram of the internal combustion engine mounted on a vehicle with the rocker cover according to the present invention attached. . 11...Rotsuka cover, 12...Recess, 13...
...Bottom of the recess, 15... Fuel filler port.

Claims (1)

[Scope of utility model registration request] In a rocker cover for an internal combustion engine that is installed on the upper part of the engine mounted under the hood of a vehicle and includes a refueling cap, a recess is provided in the upper wall of the rocker cover, and the bottom surface of the recess is substantially horizontal when mounted on the vehicle. and has a side wall facing upward around the entire circumference of the bottom surface, and has a filler port for engine lubricating oil on the bottom surface, and a bank portion with a predetermined height higher than the bottom surface around the filler port. A rock cover for an internal combustion engine characterized by having a cylindrical refueling cap threaded part that projects toward the inside of the rock cover integrally provided in the opening.