JPH0138718B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support device for a marine propulsion device, which is particularly suitable for use as a support mechanism for a propulsion unit in an inboard/outboard motor.

Generally, as shown in Fig. 1, an engine 1 serving as a driving source is provided inside a hull 2, and a propulsion unit 3 connected to the engine 1 via a universal joint or the like is rotated laterally to perform steering operations inside and outside the ship. machine is known. On the other hand, this propulsion unit 3 is configured so that it can also be rotated in the vertical direction for purposes such as lifting the hull onto land. Therefore, in this type of inboard/outboard motor, the engine is rotatably supported in the longitudinal direction between the hull 2 and the propulsion unit 3, and is rotatably supported in the longitudinal direction with respect to the hull 2. A support member 4 is interposed for rotatably supporting in the lateral direction. That is, this support member 4 has a support shaft 6 attached to a bracket 5 fixed to the transom 2a.
The propulsion unit 3 is rotatably supported by a pivot shaft 7 at its center in the width direction.

By the way, in the conventional support device, a structure is adopted in which both the upper and lower ends of the pivot shaft 7 are press-fitted into the upper arm 3a and the lower arm 3b of the propulsion unit 3, so that the pivot shaft 7 is pushed into the lower arm 3b due to the impact during cruising. There was a risk that the Atsupah arm would fall out and break or bend. In other words, when driftwood collides with the propulsion unit 3 while cruising, the impact load at this time is:
Since it also acts as a component force in the axial direction of the pivot shaft 7, the shaft end comes off from the lower arm 3b, and since all the load acts on the upper arm 3a, it is thought that this partial damage or bending occurs.

The present invention has been made in order to solve such problems, and the lower end of the pivot shaft is locked to the lower arm of the propulsion unit with a locking member, and a retaining member is fixed to the upper end of the pivot shaft. The present invention provides a support device for a marine vessel propulsion device that has an extremely simple configuration and prevents damage to the propulsion unit from obstacles such as driftwood. Hereinafter, its configuration and the like will be explained in detail with reference to embodiments shown in the drawings.

FIG. 2 is a side view of a marine propulsion device incorporating the support device of the present invention, FIG. 3 is a front view of a support member in this support device as seen from the transom side, and FIG. 4 is a sectional view of the main parts. In these figures, the same members or parts as in FIG. 1 are designated by the same reference numerals, and detailed explanations will be omitted. The support member 4 interposed between the hull 2 and the propulsion unit 3 is formed approximately in a Y-shape as shown in FIG. 3, and has left and right arms 4a,
Bearing part 5 of bracket 5 at the upper end of 4b
a, 5b, and the center portion 4c in the width direction
The propulsion unit 3 is supported on the shaft. That is, an upper arm 3a and a lower arm 3b integrally protrude from the casing in front of the propulsion unit 3.
The center portion 4c of this support member 4 is inserted between them,
Both members 3 and 4 are connected by a pivot shaft 7. As shown in FIG. 4, this pivot shaft 7 has its upper end inserted through the upper arm 3a, and its lower end fitted into the lower arm 3b, and this fitted part is fixed with a pin 11. This pin 11 is inserted into a pin hole drilled from a direction perpendicular to the axial direction of the pivot shaft 7, and its insertion side is closed with a screw cap 12. On the other hand, a washer 13a is attached to the upper end of the pivot shaft 7 with a bolt 13b. Therefore, the casing body, upper and lower arms 3 of the propulsion unit 3
a, 3b and the pivot shaft 7 constitute a rigid joint structure. In addition, in these figures, 1
Reference numeral 4 indicates a handle for removing snakes, 15 indicates a bellows boot covering the universal joint portion, 16 indicates a bearing, and 17 and 18 indicate spacers.

In addition, in the embodiment shown in the figures, as a locking member for fixing the lower end of the pivot shaft 7 to the lower arm 3b,
Although an example is shown in which the pin 11 is inserted, this may also be formed by a screw. In the case of pins, high-density materials can be used and are suitable since no processing is required. Also, the washer 1 attached to the upper end of the pivot shaft 7
It goes without saying that 3a may be a flange formed integrally with the pivot shaft 7. Furthermore, the locking member does not need to pass through the axis of the pivot shaft 7;
There is also no need to penetrate. In other words, 1 in Figure 4
1', 11'' may be used, but it is preferable to use the example.

As explained above, according to the present invention, a retaining member is fixed to the upper end of the pivot shaft that rotatably supports the propulsion unit in the lateral direction, and a member for locking the lower end of the pivot shaft to the lower arm. A rigid joint structure is formed by locking with. Therefore, even if driftwood or the like collides with the propulsion unit and a large impact force is applied in the axial direction of the pivot shaft, the pivot shaft will not be pulled out of the arm or the upper arm will not be damaged. That is, the existence of the locking member prevents the pivot shaft from coming off downward, and the upper arm is also held by the lower arm via the pivot shaft.

[Brief explanation of drawings]

Figure 1 is a side view showing the entire marine propulsion system, Figure 2
The figure is a side view of a marine propulsion device implementing the support device according to the present invention, FIG. 3 is a front view of the support member, and FIG. 4 is a sectional view of the main part. 2... Hull, 3... Propulsion unit, 3a... Upper arm, 3b... Lower arm, 4... Support member, 7... Pivot shaft, 11... Pin (locking member).

Claims (1)

[Claims] 1 The propulsion unit 3 can be freely rotated vertically and horizontally by a supporting member 4 that is rotatably supported vertically relative to the hull and a pivot shaft 7 that is inserted through the center of the supporting member 4. In a support device for a shaft-supported marine propulsion device, a retaining member 13a is fixed to the upper end of the pivot shaft 7, the upper arm 3a of the propulsion unit and the support member 4 are inserted through the pivot shaft 7, and the lower end is inserted. Lower arm 3
A supporting device for a marine vessel propulsion device, characterized in that it is fitted into a portion of the vessel propulsion device b and is locked by a locking member 11.