JPS585045Y2 - Ventilator with oil filler - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a ventilator with an oil filler, in which an oil filler cap is provided on the upper part of the ventilator to prevent pressure rise in the crankcase of an engine, and engine oil can be injected from the ventilator.

Generally, an engine is provided with an oil filler port for injecting engine oil and a ventilator for preventing pressure increase within the crankcase.

Conventionally, the oil filler port and the ventilator mounting hole were generally provided completely separately.

However, this has the trouble of having to provide two mounting holes for the oil filler port and the ventilator on the engine body side, so it has been proposed to mount the oil filler port and ventilator in one place. has been done.

By gathering the oil filler port and the ventilator in one place in this way, the installation on the engine body side only needs to be done in one place, and steps such as assembly can be omitted accordingly.

By the way, the ventilator has a hose connection port for connecting a ventilator hose, and releases the pressure inside the crankcase through this connection port.

At this time, in order to prevent oil from escaping together with the oil, a filter made of, for example, a wire mesh must be interposed between the connection port and the crankcase.

Therefore, when the oil filler port and the ventilator are assembled in one place, a filter for separating the oil must be installed and buttoned at a location that does not interfere with the injection of engine oil.

For this reason, this type of oil-filled ventilator is
Although the attachments are assembled in one place, there is a drawback that the structure for the assembly becomes significantly complicated.

In addition, the above filter needs to be checked for clogging from time to time, but due to the complicated structure of the ventilator with an integrated oil filler port, it is generally troublesome to easily remove the filter, and the filter There was a problem in that the assembly work of attaching the ventilator to a predetermined location on the ventilator was troublesome.

This idea was made in view of the above-mentioned conventional problems, and its purpose is to improve the structure of a ventilator with an oil filler, in which an oil filler port and a ventilator are assembled, to a greater extent than before. It is an object of the present invention to provide a ventilator with an oil filler which is simplified and allows easy assembly and removal of a filter for separating oil.

An embodiment of this invention will be described below based on the drawings.

FIG. 1 shows an embodiment of a ventilator according to this invention.

The ventilator shown in the figure has a main body 3, which has a hose connection port 4 on the outer periphery for connecting a ventilator hose, and is configured to penetrate in the vertical direction. 3, and a cylindrical filter 5 disposed on the ventilator body 1 so as to be aligned with the axis of the cap 7. It is designed to be installed in the mounting hole formed in 3.

Next, the specific configuration of each part will be described.

The ventilator body 1 is attached to the engine body 3 with bolts 2.
A flange portion 11 to be attached to the flange portion 11 and a cylindrical portion 12 erected above the flange portion 11 are integrally formed.

A female threaded portion 13 is provided on the inner periphery of the upper opening of the cylindrical portion 12.
The inner circumferential end of the flange portion 11 extends inside the cylindrical portion 12, and a locking protrusion 14 is integrally erected upward from the inner circumferential end.

Further, a male threaded portion 61 formed around the outer periphery of the annular holder 6 is screwed into the female threaded portion 13 .

The annular holder 6 has a female screw portion 62 formed on its inner periphery for screwing the oil filler cap 7, and an annular protrusion 63 integrally formed at a position corresponding to the locking protrusion 14 at the lower part of the annular holder 6. It is formed.

The upper and lower ends of the cylindrical filter 5 are positioned by the annular projection 63 and the locking projection 14 so as to coincide with the axis of the cap 7.

The cylindrical filter 5 is for preventing engine oil from scattering to the outside through the connection port 4.

FIG. 2 shows a perspective view of the ventilator attached to the engine body 3, and reference numeral 8 indicates a ventilator hose connected to the connection port 4.

Now, the main components of the ventilator with oil filler configured as above are the ventilator body 1,
It is composed of only three members: an annular holder 6 button and an oil filler cap 7.

Moreover, the structure of each individual member is relatively simple, and the ventilator main body 1, which is the most complex among them, has complicated partition walls, etc., and is much simpler than before. It has a similar structure.

Therefore, the overall structure is greatly simplified, and the assembly can be easily performed by simply screwing together the three members described above.

Further, the oil filler cap 7 can be attached and detached completely independently from the ventilator main body 1, and by removing the cap 7 and injecting engine oil from its opening (oil filler port), Oil is fed directly into the engine body 3 through the inside of the filter 5.

Furthermore, what should be noted here is that the cylindrical filter 5
This means that the ventilator can be easily removed by simply removing the annular holder 6 without removing the ventilator main body 1.

Moreover, the annular holder 6 can be removed by an extremely simple operation of releasing the screwed state with the ventilator main body 1 side.

Therefore, it is possible to easily inspect whether the cylindrical filter 5 is clogged or not.

Additionally, the filter 5 can be assembled easily as well.

As mentioned above, although the ventilator with oil filler according to this invention combines the two functions of an oil filler and a ventilator, its configuration is very simple as described above, and the cylindrical filter can be removed and It has the advantage that it can be easily assembled without removing the ventilator main body.

[Brief explanation of drawings]

FIG. 1 is a sectional front view showing an embodiment of a ventilator with an oil filler according to this invention, and FIG. 2 is a perspective view showing a state in which the ventilator according to this invention is attached to an engine body. 1... Ventilator body, 11... Flange part, 12... Cylindrical part, 13...
Female thread part, 14... Locking protrusion, 2...
Bolt, 3...Engine body, 4...
Connection port, 5...Cylindrical filter, 6...
...Annular holder 61...Male thread part, 62
...Female screw part, 63 ... Annular projection, 7
...Oil filler cap, 8...Ventilator hose.

Claims (2)

[Scope of utility model registration request] (1) A ventilator body that has a hose connection port for connecting a ventilator hose on the outer periphery and is configured to penetrate in the vertical direction, and an oil filler that is removably attached to the upper opening of this body. A ventilator with an oil filler is equipped with a cap and a cylindrical filter disposed within the ventilator body so as to coincide with the axis of the cap, and is mounted in a mounting hole formed in the engine body. b) The ventilator main body is integrally formed with a flange portion for being attached to the engine main body with bolts and a cylindrical portion standing above the flange portion. O) A female thread is formed around the inner periphery of the upper opening of the cylindrical part, and the inner end of the flange enters inside the cylindrical part, and the inner end of the flange extends upward from the inner end. A locking protrusion is integrally provided upright thereon, and a male threaded portion formed around the outer periphery of the annular holder is screwed into the female threaded portion. (c) The annular holder has a female screw portion formed on its inner periphery for screwing the oil filler cap, and an annular projection is integrally formed at a position corresponding to the locking projection at the bottom of the annular holder. There is, (2) A ventilator with an oil filler, characterized in that the upper and lower ends of the cylindrical filter are positioned by the annular projection and the locking projection so as to coincide with the axis of the cap.