JPS6040397Y2 - Outboard motor with built-in oil tank - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an outboard motor with a built-in oil tank.

BACKGROUND ART Conventionally, in outboard motors in which an oil tank is housed within an engine cover, an oil tank 2 is attached directly to an engine body 1, as shown in FIG.

That is, support arms 31 and 32 having threaded grooves 3a are provided in a protruding manner on the engine body 1, and correspondingly, mounting flanges 4□ and 4□ are formed on the oil tank 2. A mounting hole 4a is formed in the mounting flange 41, 4° at a position corresponding to the screw groove 3a, a rubber bushing 5 is interposed in the mounting hole 4a, and the mounting flange 4 is fixed with a screw 6.
1 and 4 degrees are respectively screwed to the support arms 31.3 degrees.

Therefore, there is a risk that the screws 6 may become loose at the oil tank 2 mounting part due to vibrations when the outboard motor is driven, and the weight of the oil tank 2 will be directly applied to the engine body 1, resulting in damage to the mounting part. Ta.

Further, when installing or removing the oil tank 2, it is necessary to remove the screws 6, which makes maintenance work difficult.

Furthermore, since the oil tank 2 is provided with the mounting flanges 41, 4□, the mold structure for molding becomes complicated.

The present invention was developed in view of the above circumstances, and provides an outboard motor with a built-in oil tank that eliminates the risk of engine vibrations being directly transmitted to the oil tank and that allows for easy installation and removal of the oil tank. The purpose is to provide.

Hereinafter, the present invention will be described in detail with reference to illustrated embodiments.

2 and 3 show the present invention applied to an outboard motor using a horizontal in-line four-cylinder engine, where 10 is an engine body and 11 is an engine cover that protects the engine body 10. FIG.

The engine body 10 is integrally fastened to a drive shaft housing 13 via screws 14 with an engine holder 12 in between.

On the other hand, the engine cover 11 is composed of a lower cover 15 and an engine cover set 16, and these lower cover 15 and engine cover set 16 fit together with a rubber 17 interposed therebetween. A cover 18 is provided vertically.

A bottom portion 15a projecting inward is provided at the lower end of the lower cover 15, and a flange 112a overlapping the bottom surface of the bottom portion 15a is provided on the engine holder 12.

An annular rib 19 is provided on the upper surface of the bottom 15a of the lower cover 15, and an elastic body 22 such as rubber is attached to the rib 19.
0 is installed, and an oil tank 21 is placed above it.

This oil tank 21 is elastically supported by the lower cover 15 via a support device 22, and the support device 22 includes a rod 23 as a support rod, which is erected inside the bottom 15a of the lower cover 15, and a rod 23 as a support rod. The supporter 24 has one end supported by the tip of the oil tank 23, a hook 24a at the other end, and a hole 24b formed in the plate surface to loosely fit into the mouth 21a of the oil tank 21;
while engaging one end with the hook 24a of the lower cover.
15 and a tensioning means 25 whose other end is held on the inner surface.

The rod 23 has thread grooves carved on both ends.
The bottom part 15 of the lower cover 15 is attached via the lower end threaded part 23a.
a, and one end of the support 24 is held between two nuts 26 via the upper threaded portion 23b.

On the other hand, the tensioning means 25 includes rings 28 provided at both ends of a rubber band 27, with one ring 28
is engaged with the hook 24a of the support 24, and the other ring 28 is engaged with the hook 29 screwed onto the inner surface of the lower cover 15, thereby attaching the oil tank 21 to the lower cover 1.
It is sandwiched between 5 and support 24.

30 is an elastic body such as rubber placed between the upper surface of the oil tank 21 and the support 24.

The bottom part 15a of the lower cover 15 and the engine holder 1
The second flange 12a is fastened together with a bolt 32 and a nut 32a via a rubber bush 31.

33 is a spacer arranged inside the rubber bush 31.

According to the outboard motor with a built-in oil tank according to the present invention, when installing the oil tank 21, the engine cover set 16 is removed and the oil tank 21 is placed on the elastic body 20 of the rib 19.

Then, the elastic body 30 is fitted into the mouth 21a of the oil tank 21, the support 24 is placed on top of the elastic body 30, and one end of the support 24 is fixed to the tip of the rod 23 with a nut 26.

In addition, when arranging the elastic body 30 and the support 24, the cap of the oil tank 21 is removed or the cap is fitted into the mouth portion 21a of the oil tank 21 in advance.

Next, one end of the rubber band 27 is hooked on the hook 24a of the support 24 via the ring 28, and the other end is hooked on the hook 29 attached to the lower cover 15 via the ring 28.

As a result, the oil tank 21 is held between the lower cover 15 and the support 24 by the elastic bodies 20 and 30, respectively.

Then, the engine cover set 16 is attached to the lower cover 15, and the installation of the oil tank 21 is completed.

Note that the height of the oil tank 21 is higher than the height of the rod 23.
If it is desired to increase the rigidity, a structure as shown in FIG. 4 or 5 may be used.

That is, the one in FIG. 4 has thread grooves 34a on the inner surface of both ends.
The pipe 34 engraved with
The support 24 is fixed with a screw 35□, one end of the support 24 is placed at the tip of the pipe 34, and the support 24 is tightened and fixed with a screw 35°.

In addition, FIGS. 5 and 5 show a stud 36 with a threaded groove carved into the tip of the pipe 34. ．． 36□ is provided in a protruding manner by screwing or brazing, and the support 24 is fitted into this and fixed with a nut 37.

As described above, according to the outboard motor with a built-in oil tank of the present invention, the lower end of the lower cover is provided with a bottom that projects inward, and the engine holder is provided with a flange that overlaps this bottom. The overlapping part of the bottom and the flange of the engine holder is connected via an elastic body, and the elastic body for arranging the oil tank is attached to the upper surface of the bottom of the lower cover, and a support rod is erected, and the upper end of the support rod is attached. One end of a plate-like support that engages with the mouth of the oil tank and supports the oil tank is fastened to the part, and an elastic body is interposed between the oil tank and the elastic body disposed on the elastic body on the inner surface of the bottom part of the lower cover. Since the support is mounted on the support and the other end of the support and the lower end of the lower cover are connected by an elastic and removable tensioning means, the oil tank is supported by a double elastic structure, and the oil tank is supported by a double elastic structure. It can easily absorb vibrations when the external machine is driven.

Further, since the oil tank can be attached and removed by attaching and detaching the support and tension means, workability during maintenance etc. is good.

Furthermore, since the oil tank is fixed using a flexible structure using an elastic body and elastic tensioning means, the effect of absorbing shocks and the like is good.

[Brief explanation of the drawing]

Fig. 1 is a partial sectional view showing a conventional outboard motor with a built-in oil tank, Figs. 2 and 3 show an embodiment of the outboard motor with a built-in oil tank of the present invention, and Fig. 2 shows an engine cover. A plan view of the set removed, and FIG. 3 is a sectional view taken along the line A--A in FIG. 2. Figures 4 and 5 I and ■ show other embodiments of the support rod, Figure 4 is a partially omitted conceptual cross-sectional view, and Figures I and II are conceptual cross-sections showing only the tip. It is a diagram. 10...◆◆・Engine body, 11... Engine cover, 15... Lower cover, 16...
...Engine cover set, 20,30...
Elastic body, 21...Oil tank, 22...
...Support device, 23...Rod, 24...
...Support, 25...Tension means.

Claims (1)

[Scope of utility model registration request] In an outboard motor with a built-in oil tank, in which an oil tank is housed in the engine cover together with the engine body attached to the engine holder, a bottom part protruding inward from the lower end of the lower cover is used. a flange that overlaps the bottom of the lower cover is provided on the engine holder, the overlapping portion of the bottom of the lower cover and the flange of the engine holder is connected via an elastic body, and on the upper surface of the bottom of the lower cover,
At the same time as installing an elastic body for arranging the oil tank, a support rod is erected, and one end of a plate-shaped support that engages with the mouth of the oil tank and supports the oil tank is attached to the upper end of the support rod. The support is attached to an oil tank disposed on the elastic body on the inner surface of the bottom of the lower cover with an elastic body interposed therebetween, and the other end of the support and the lower end of the lower cover are connected by an elastic detachable tensioner. An outboard motor with a built-in oil tank characterized by being connected by means.