JPS5816992A - Kick-up device of boat thrust unit - Google Patents

Abstract

PURPOSE:To reduce the size and provide ready assembly by placing a tilt cylinder inside a storage cavity which is integrally molded with a cramp bracket and by making the axis of the tilt cylinder substantially perpendicular to a swivel bracket. CONSTITUTION:A swivel bracket 14 is held by a cramp bracket 13 which is fixed to a stern board 12 of a hull 11 so that the bracket 14 can be rotated on the substantially horizontal axis. A thrust unit 15 is supported so that the unit can be rotated on the substantially vertical axis. A closing member 21 is closely fit at the interior side to a storage cavity 20 which is integrally molded with a cramp bracket 13. A tilt cylinder 26 is secured inside the storage cavity 20 with a pin and connected to the swivel bracket 14. A pump unit 30 is disposed inside the hull and connected to the tilt cylinder 26 by a fluid pipe 31.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flip-up device for a marine vessel propulsion device such as an inboard/outboard motor or an outboard motor.

Generally, a marine vessel propulsion device is equipped with a flip-up device that allows the propulsion unit to rotate in a downward direction relative to the hull so that the propulsion unit can be tilted up or tilted down.

FIG. 1 is an explanatory diagram showing an inboard/outboard motor equipped with a flip-up device according to a conventional example, in which a clamp bracket 3 is fixed to a stern plate 2 of a hull 1.
A swivel bracket 4 is supported rotatably around a substantially horizontal axis.

A propulsion unit 5 is supported on the swivel bracket 4 so as to be rotatable around a substantially vertical axis, and a tilt sill 6 that can be extended by pressure oil is interposed between the swivel bracket 4 and the clamp bracket 3. . The propulsion unit 5 transmits the output of an engine disposed inside the hull to a propeller 8 via a transmission shaft 7, a drive shaft (not shown), a forward/reverse switching device, and a propeller shaft.
The NFL is capable of moving backwards.

In an inboard/outboard motor equipped with such a conventional flip-up device, by maintaining the tilt sill 6 in a contracted state, the IfL advance unit 5 can be held in a normal position against propulsion resistance. By extending the tilt cylinder 6, the propulsion unit 5 can be rotated about the tilt center 4A and flipped upward.

However, in such a conventional flip-up device, the pump unit is placed inside the hull, the tilt cylinder 6 is attached to the clamp bracket 3, and the pump unit and the tilt cylinder 6 are connected by hydraulic piping. After the connection, it is necessary to inject pressure oil into the hydraulic piping system and to bleed air, making assembly to the hull 1 difficult. Also, clamp bracket 3
The tilt cylinder 6 with a predetermined stroke must be disposed in a narrow gap between the swivel bracket 4 and the swivel bracket 4, and the axis of the tilt cylinder 6 becomes inclined with respect to the swivel bracket 4, resulting in a flipping force of the tilt cylinder 6. There is a problem in that it is difficult to increase the length Ll of the arm relative to the tilt center 4A, and therefore it is necessary to increase the capacity of the tilt cylinder 6.

SUMMARY OF THE INVENTION An object of the present invention is to provide a flip-up device for a marine vessel propulsion device that can reduce the weight of a tilt cylinder and improve workability when assembling it to a ship's hull.

In order to achieve the above object, the flip-up device for a marine propulsion device according to the present invention is rotatably supported by a clamp bracket fixed to the stern plate of the ship body θ) approximately horizontally itMt+t. In addition, a swivel bracket that rotatably supports the propulsion unit around a substantially vertical axis, four housing parts integrally formed with the clamp bracket, a closing IK member that is in close contact with the inside of the housing recess, and a pin connection to the closing member. a tilt cylinder which is housed in the recess and is connected to the swivel bracket; a pump unit disposed inside the ship; and a fluid pipe which passes through the closing member and connects the bomb unit 1 and the tilt cylinder. .

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a sectional view showing an embodiment in which the bouncing device for a marine propulsion device according to the present invention is applied to a general inboard/outboard engine, and FIG. 3 is a sectional view taken along the line lll-1 in FIG. FIG. 4 is a cross-sectional view showing an enlarged main part of FIG. 2. FIG.

A notch 12A is formed in the stern plate 12 of the hull 11, and a gasket (12A) is formed around the periphery of the notch 12A on the outer surface of the stern plate 12.
The clamp bracket 13 is attached to the bolt 12C via 2B.
clamp bracket 1.
3, a swivel bracket 14 is connected with a pin so as to be rotatable around a tilt center 13A forming a substantially horizontal axis. A propulsion unit 15 is supported by the swivel bracket 14 so as to be rotatable around a substantially vertical axis. The propulsion unit 15 incorporates a transmission shaft 16, a clutch, a drive shaft, a forward/reverse switching device, a propeller shaft, etc., and transmits the output of an engine disposed inside the hull to a propeller 17, allowing the hull 11 to move forward and backward. . Note that a clutch housing 13B is attached to a bolt 13 above a portion of the clamp bracket 13 that is attached to the notch 12A formed in the stern plate 12.
It is fixed by C. Further, a tilt lock device 14A is interposed between the clamp bracket 13 and the swivel bracket 14 to hold the propulsion unit 15 in a tilted down state.

The clamp bracket 13 is attached to the notch 12A formed in the stern plate 12 on the lower side of the ship.
The cylindrical member 18 is integrally fixed with a bolt 19 via a spigot joint while holding the O-ring 18A, and the inside of the cylindrical member 18 forms a housing recess 20. A closing member 21 is tightly fixed to the inboard end of the cylindrical member 18 forming the accommodation recess 20 with a bolt 23 via a spigot joint while holding an O-ring 22 therebetween. There is. A support portion 24 is formed on the side of the closing member 21 facing the accommodation recess 20, and a double-acting tilt cylinder 26 is swingably supported by a trunnion on the support portion 24 via a pin 25. The tilt cylinder 26 has a cross-sectional dimension that allows it to be inserted into the accommodation recess 20 from the inboard opening of the cylindrical member 18, and substantially the entire cylinder body is accommodated in the accommodation recess 20, with the tip of the piston rod 27 is connected to the swivel bracket 14 via an elastic collar 28 and a pin 29.

Further, an electric pump unit 30 is arranged inside the hull 11, and the electric pump unit 30 and the tilt cylinder 26
and are connected to each other by hydraulic pipes 31 and 32 via an oil passage formed in the closing member 21. here,
The hydraulic pipes 31 and 32 arranged in the housing section 20 are made of flexible material capable of absorbing the swinging of the tilt cylinder 26 relative to the closing member 21.

Next, the procedure for assembling the flip-up device will be explained. First, at the pump factory, the tilt cylinder 26 is connected to the closing member 21 via the pin 25, and
The tilt cylinder 26 and the electric pump unit 30 are connected by hydraulic piping 31, 32 through an oil passage formed in the closing member 21, and pressure oil is injected into the hydraulic piping system thus formed. At the same time, air is removed and the sub-assembled state is formed. The closing member 21 and the tilt cylinder 2 are thus brought into a sub-assembled state.
6 and the pump unit 30, the chill cylinder 26 is inserted into the accommodation recess 20 from the inside of the ship, and then closed at the sacrificial factory. While holding the O-ring 22, the member 21 is fixed to the cylindrical part 4418 with the bolt 23 through the spigot joint, and the tip of the piston rod 27 of the tilt cylinder 26 is connected with the elastic collar 28 and the pin 29. The pump unit 30 is connected to the swivel bracket 14, and the pump unit 30 is further fixed within the hull 11.

According to the flip-up device that is attached to the hull 11 as described above, it is brought into a sub-assembled state at the pump factory;
It becomes possible to inject pressure oil into the hydraulic piping system, bleed air, etc., and therefore the assembly becomes easy and quick. Also, tilt cylinder tag 2
6 is a collection recess p formed integrally with the clamp bracket 13.
+tX20 and 1qI of the tilt cylinder 26
+fldd can be arranged 6 substantially perpendicularly to the swivel bracket 14, and therefore, the arm length L2 relative to the tilt center 13A of the flipping force by the tilt cylinder 26 can be made larger than in the past, and the tilt The capacity of the cylinder 26 can be made smaller than before. Further, the tilt cylinder 26 is pin-coupled to the closing member 21 which is fixed to the cylindrical member 18 in a ferro-coupled state via a cylindrical member 18 which is integrated with the clamp bracket 13 in a ferro-coupled state. , the tip of the piston rod 27 of the tilt cylinder 26 is
Since the clamp bracket 13 is pin-coupled to the swivel bracket 14, the clamp bracket 13, swivel bracket 14, and tilt cylinder 26 can be easily assembled with high precision.
It becomes possible to ensure smooth operability of the tilt cylinder 26.

FIG. 5 is an explanatory diagram showing a modification of the above embodiment, and the difference from the above embodiment is that the electric pump unit 3
0 is manual pump unit 3OA, tilt cylinder 2
6 is a single-acting tilt cylinder 26A, and hydraulic piping 31
．． 32 is a single hydraulic piping 31A, and according to this modification, the high pressure oil used from the manual pump unit 1-30A is chilled through the pressure piping 31A only when the propulsion unit is raised. When returning from t to the normal position, the tilt cylinder 26A is contracted by gravity acting on the propulsion unit, and the pressure oil is sent through the hydraulic piping 31A. It can be returned to the pump unit 30A. 1. Other effects in this modification are the same as those in the embodiment described in -.

In the above embodiments, the case where the present invention is applied to an outboard motor has been described, but it is obvious that the present invention can also be applied to an outboard motor.

As described above, the flip-up device of the boat 1 (uniform machine) according to the present invention is fixed to the stern plate of the hull, supported by a clamp bracket that rotates around a substantially horizontal axis, and , propulsion unit I.1117'14 (11'
The opening 1i11, the swivel sill that rotatably supports the f), the collection recess formed integrally with the clamp bracket, the closing member that is tightly attached to the inside of the four housing parts, and the pin connection to the closing member. A tilt cylinder which is housed in the four storage parts and is connected to the swivel bracket I, a pump unit disposed inside the ship, and fluid piping that passes through the blocking member and connects the pump unit and the tilt cylinder. Since it has these features, the capacity of the tilt sill can be reduced, and the workability of assembling it to the hull can be improved.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a flip-up device for a marine propulsion device according to a conventional example, FIG. 2 is a sectional view showing an embodiment of the flip-up device for a boat propulsion device according to the present invention, and FIG. Figure I-1 [
4 is a sectional view showing an enlarged main part of FIG. 2, and FIG. 5 is a sectional view showing a modification of FIG. 2. 11 hull, 12 stern board. 13 Clamp bracket. 14 Swivel bracket. 15 - Propulsion unit, 20 Accommodation recess. 30.3OA pump unit. 31.31A, 32 Hydraulic piping, 1 Agent Patent attorney Osamu Shiokawa Jiichigo 58 Carus healing L 1 Thick thread of the incident, -II, new heat of 11 days ago, 7 j" -14. 3 Baku'J - vo 1 ro saki - kotororoaki 1pi/) A1) knowledge I JA - Ichigi γ
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Claims (1)

[Claims] (1) A clamp bracket fixed to the stern plate of the hull is rotatably supported on a substantially horizontal axis, and a swivel bracket that supports the propulsion unit rotatably on a substantially vertical axis is integrated into the clamp bracket. A housing recess formed, a closing member closely attached to the inside of the housing recess, a tilt cylinder which is pin-coupled to the closing member and accommodated in the housing recess and is connected to the swivel bracket, and a tilt cylinder disposed inside the ship. A flip-up device for a marine vessel propulsion device, comprising: a pump unit; and a fluid pipe that passes through a blocking member and connects the pump unit and a tilt sill.