JPH0212194Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an oil tank inlet device for an outboard motor.

Conventional outboard motor oil tanks have an oil inlet opening at the top, but when oil is injected through this inlet, the oil is allowed to spill out from the opening, which causes damage to the boat. It had the disadvantage of contaminating the area around the outer motor with oil. On the other hand, funnels and similar tools are sometimes used to prevent spills in tanks other than outboard motors, but when such tools are used, they are unstable because they are only inserted into the fill port and do not have a holding mechanism. Moreover, it was not sufficient because it easily spilled from the gap between the injection port and the funnel.

This invention was made with the aim of eliminating the drawbacks of the above-mentioned prior art.By fitting the gutter into the injection port, the gutter can be held stably fixed and prevented from leaking at the same time. To provide an oil tank inlet for an outboard motor which can greatly improve workability and prevent oil from leaking.

This invention will be explained below with reference to embodiments shown in the drawings.

FIG. 1 shows a longitudinal cross-section of an example of an oil tank inlet device to which this invention is applied, and FIG. 2 shows an enlarged cross-section of the same essential parts. A circumferential groove 3 is formed on the outer surface of the base, and an O-ring 4 made of an elastic material such as rubber or soft synthetic resin is loosely fitted in the circumferential groove 3 with some play in the vertical direction.

On the other hand, the funnel-shaped gutter 5 that is externally fitted into the injection port 2 has inclined surfaces 7 and 8 having angles θ formed at the upper and lower parts of the circumferential edge 6a of the lower fitting hole 6, respectively. This circumferential edge 6
When the lower end surface 6b of a comes into contact with the upper part of the oil tank 1, the O-ring 4 contacts the upper inclined surface 7 and the circumferential groove 3.
It is designed to be crimped between the upper circumferential surface of the

In the figure, 9 is a cap that is screwed into the inlet 2 of the oil tank 1 to seal it, 10 is a discharge port for collecting leaked oil, and 11 is a discharge hose connected to the discharge port 10.

Next, the effect will be explained.

As shown in FIG. 2, an O-ring 4 is fitted into the circumferential groove 3 of the injection port 2, and when injecting oil, the outer cap 9 is removed and the fitting hole 3 of the gutter 5 is removed.
When fitted into the inlet 2, the lower inclined surface 8 hits the O-ring 4 as shown in the third figure, and when the gutter 5 is further pushed down, the inner peripheral edge 6a of the fitting hole 6 pushes the O-ring 4 into the circumferential groove. The inner peripheral edge 6 passes through the O-ring 4 by being compressed and deformed so as to extend into the space 3. Then, the O-ring 4 recovers elastically and is interposed between the upper inclined surface 7 of the inner circumferential edge 6 and the inner upper surface of the circumferential groove 3 as shown in the second figure, and the elasticity of the O-ring 4 Thus, the gutter 5 is fixed to the injection port 2 in a liquid-tight manner.

In this way, oil is injected from the inlet 2, and the oil spilled at this time is captured in the gutter 5 and collected from the outlet 10 through the hose 11. At this time, it is desirable to form the discharge port 10 at the lowest position of the gutter 5.

When removing the gutter 5, hold the gutter 5 and pull it up to remove the upper slope 7 of the inner peripheral edge 6.
compresses the O-ring 4, and the deformed portion extends into the space of the circumferential groove 3, allowing passage of the inner circumferential edge 6, and the gutter 5 can be removed.

As described above, this invention forms a circumferential groove on the circumferential surface of the base of the oil tank inlet, loosely fits an O-ring made of an elastic material such as rubber into this circumferential groove, and fits the O-ring externally into the inlet. Inclined surfaces are formed at the upper and lower parts of the inner peripheral edge of the fitting hole of the gutter, and when the lower surface of the inner peripheral edge comes into contact with the upper surface of the oil tank, an O-ring is pressed between the upper sloped surface and the circumferential groove. This makes it possible to improve the ease of assembling the gutter.
When the gutter is attached to the oil tank inlet,
The O-ring is stably held in contact with the circumferential groove and the upper slope of the gutter fitting hole at three points, so the O-ring
The sealing performance of the ring can be improved,
By simply fitting the gutter into the injection port, both fixation and liquid-tightness are achieved at once, allowing for simple and reliable injection without leakage. In addition, when the gutter is attached to the oil tank inlet, the O-ring is pressed against the upper slope of the gutter fitting hole, so the gutter is stably pressed against the upper surface of the oil tank by the elastic force of the O-ring. The structure is simple because it is fixedly held and there is no need to use special fixtures.
It also has the advantage of being inexpensive.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of this invention, FIG. 2 is an enlarged sectional view of the main part of FIG. 1, and FIG. 3 is a sectional view showing the process of fitting gutters. 1... Oil tank, 2... Inlet, 3... Peripheral groove, 4... O-ring, 5... Gutter, 6... Inner peripheral edge, 7, 8... Inclined surface, 9... Outer cap,
10...Discharge hole, 11...Hose.

Claims (1)

[Scope of utility model registration request] A circumferential groove is formed on the circumferential surface of the base of the inlet of the oil tank, and an O-ring made of an elastic material such as rubber is loosely fitted into this circumferential groove, and the inner circumferential edge of the fitting hole of the gutter externally fitted to the inlet. An inclined surface is formed at the upper and lower parts of the oil tank, and when the lower surface of the inner circumferential edge comes into contact with the upper surface of the oil tank, an O-ring is pressed between the upper inclined surface and the circumferential groove. Outboard motor oil tank filler device.