JPH02279492A - Tilt device for vessel propeller - Google Patents

Abstract

PURPOSE:To rationalize a layout by arranging the cylinder unit of a tilt device at the center within the plane sphere of a swivel case, and at the same time, distributing a pressure fluid supply portion such as a pump and a reserve tank or the like at the right and left of the cylinder unit. CONSTITUTION:At the stern plate of a vessel, a swivel case 4 is pivotingly and up-swingably/down-swingably supported through a tilt shaft 3 provided between the upper parts of a pair of right and left stern brackets 2 fixed at this stern plate. Also, a tilt device 10 is provided at a space surrounded with respective stern brackets 3. In this instance, the tilt device 10 is constituted with a cylinder unit 11 and a portion 12 which supplies a pressure fluid to the unit 11. And the center of the cylinder unit 11 is arranged at the center within the plane sphere of a swivel case 4. Also, the pressure fluid supply portion 12 has its motor 13 and a pump 14 on one side of the right or the left and also, a reserve tank 15 on the other side of the right or the left, respectively arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tilt device for tilting a swivel case equipped with a propulsion device with respect to a stern bracket fixed to a ship hull.

(Prior art) In general, for small vessels, etc., a stern bracket is fixed to the stern plate, a swivel case is pivoted to the stern bracket so as to be able to swing up and down, and a propulsion device is attached to a swivel shaft provided on the swivel case. It is attached so as to be rotatable left and right, and a tilt device is interposed between the stern bracket and the swivel case, and the tilt device tilts the propulsion device so that the most efficient propulsion force can be obtained. It also makes it easier to pull up the outboard motor when going ashore.

Incidentally, since the tilt device is disposed between the stern bracket and the swivel case, it is required to be compact.

Therefore, in JP-A No. 60-1097, a cylinder unit and a pressure fluid supply section are arranged side by side within a plane area of a swivel case, and the center line of the cylinder unit is aligned with the center line of the swivel case. An eccentric structure has been proposed.

(Problems to be Solved by the Invention) As described above, if the cylinder unit and the pressure fluid supply section are housed within the swivel case, the piping and the like can be shortened. However, for this purpose, the axis of the cylinder unit must be eccentric with respect to the center of the swivel case, and if eccentric, the strength of the swivel case must be increased, leading to an increase in weight.

(Means for Solving the Problems) In order to solve the above problems, the present invention arranges a cylinder unit approximately in the center within a plane area of a swivel case, and has pressure fluid supply such as a pump or a reservoir tank on the left and right sides of this cylinder unit. The section was divided and arranged.

(Function) By dividing the pressure fluid supply section into left and right parts, the members constituting the tilt device can be efficiently accommodated within the plane area of the swivel case.

(Example) Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view showing the installed state of the tilt device according to the present invention, FIG. 2 is a view taken along arrow A-A in FIG. 1, and FIG.
It is a BB direction arrow view of a figure.

A pair of left and right stern brackets 2.2 are fixed rearward to the stern plate 1 of the Ia9 vessel, and a swivel case 4 is swung downward on a tilt shaft 3 installed between the upper parts of these stern brackets 2, 2. It supports freely. To be more specific, this swivel case 4 has a vibe part 5 in the center, wing parts 4a, 4a extending left and right, contact parts 4b, 4b provided at the tips of the wing parts 4a, 4a, which come into contact with the pin 8, Consists of.

A swivel shaft 6 is rotatably inserted into a vibrator 5 provided at the center of the swivel case 4.4, and a propulsion device 7 is attached to the swivel shaft 6. The thrust generated by the propulsion m7 is transmitted to the hull via the vibrator 5 and a bottle 8 provided on the stern bracket 2 with which the vibrator 5 comes into contact. Here, the attachment position of the bin 8 can be adjusted.

Further, a tilt device 10 is disposed in a space surrounded by the stern brackets 2, 2.

The tilt device 10 includes a cylinder unit 11 and a pressure fluid supply section 12 that supplies hydraulic oil as pressure fluid to the cylinder unit 11. The pressure fluid supply section 12 further includes a motor 13 and a pump driven by the motor 13. 14 and a reservoir tank 15 communicating with the oil chamber of the cylinder 16. The motor 13 and the pump 14 are disposed on one left and right sides of the cylinder unit 11, and the reservoir tank 15 is disposed on the other left and right sides.

The stiffness keeps the height of the pressure fluid supply section 12 low. Specifically, the motor 13 and the pump 14 maintain a lower height than the pivot portion 17a of the piston rod 17 of the cylinder unit 11 relative to the pin 18, and
Similarly, 5 is the piston rod 17 of the cylinder unit 11.
The pin 1 of the cylinder 16 of the cylinder unit 11 is maintained at a lower height than the pivot portion 17a of the pin 18 of the cylinder unit 11.
The pin 18 and the pin 19 are located above the pivot portion 16a for the pin 9, thereby avoiding interference of the pressurized fluid supply section 12 with the pin 18 and the pin 19.

The center 01 of the cylinder unit 1 is arranged approximately at the center of the planar area of the swivel cases 4, 4, and a piston rod 17 is inserted into the cylinder 16 of the cylinder unit from above. The lower end of the cylinder 16 is connected to the left and right stern brackets 2.
．． It is pivotally connected to a pin 19 installed between the lower ends of 2. In order to allow a portion of the pressure fluid supply section 12 to protrude outward, the swivel case 4 extends from the receiving sections 4c, 4c of the pin 18 to the contact sections 4b, 4b, and the side surfaces of the wing sections 4a, 4a are arranged in an arcuate shape. Open to (4d, 4d)L,.

ing.

Furthermore, a recess 20 into which a part of the pump 14 fits is formed inside the lower part of one of the stern brackets 2, and a hole 21 for manual valve operation is formed in the side surface of the bracket forming this recess 20. By doing this, the space between the stern brackets 2.2 does not need to be increased, and the overall structure can be made compact. A wall 20a continuous to the recess 20 of the stern bracket 2 maintains a clearance at the upper part of the stern bracket 2 with respect to the mounting bolt hole 20+) formed in the stern bracket 2, which is necessary for mounting during work. Further, the stern bracket 2 is provided with a notch 22 in the lower half of the stern bracket 2 to avoid interference with the pressure fluid supply section.

Moreover, as shown in FIG. 3, the center 0 of the cylinder unit 11
．． In contrast, the center 02 of the large-diameter pump 14 is offset in the front-rear direction. By doing so, interference between the pump 14 and the vibrator 5 through which the swivel shaft 6 is inserted can be avoided.

In the above, when the pump 14 is driven by the rotation of the motor 13, hydraulic oil is supplied to one chamber in the cylinder unit 11, and the cylinder unit 11 performs an expansion or compression operation,
As the motor 13 rotates in the opposite direction, hydraulic oil is supplied to the other chamber by the pump 14, and the operation is opposite to that described above. The reservoir tank 15 compensates for the volume of the piston rod going in and out due to the expansion and compression movements.

(Effects of the Invention) As explained above, according to the present invention, since the pressure supply part of the tilt device is distributed to the left and right sides of the cylinder unit, the center of the cylinder unit can be placed approximately at the center of the plane area of the swivel case. A swivel case that is compact and has the same rigidity as the conventional one is sufficient.

Furthermore, since at least a portion of the side surface of the swivel case is open, interference between the swivel case and the pressure fluid supply source is avoided. At this time, by arranging at least a part of the pressure fluid supply source between the substantially U-shaped planar cross sections of the stern bracket, further compactness can be achieved. By offset in the front-rear direction with respect to the center of the unit, interference between members can be effectively prevented.

In addition, a recess is formed in the stern bracket so that a part of the pressure fluid supply section can be accommodated, so the stern bracket can be installed around the bolt hole, and the mounting can be done between the left and right stern brackets while ensuring the clearance required during work. can be made narrower and more compact, while avoiding interference with the pressure fluid supply section.

Furthermore, the stern bracket has a notch formed at its lower part, so when installing near the tilt axis, it is necessary to secure a sufficient surface area around the bolt hole and avoid interference with the pressure fluid supply section. I can do it.

[Brief explanation of drawings]

Fig. 1 is a side view of the tilt device according to the present invention installed, Fig. 2 is a view from A-A and A'-A' in Fig. It is a BB direction arrow view, and is a partially cross-sectional view. In the drawing, 2 is a stern bracket, 4 is a swivel case, 7 is a propulsion device, 10 is a tilt device, 11 is a cylinder unit, 12 is a pressure fluid supply section, 13 is a motor, 14 is a pump, and 15 is a reservoir tank. . Patent applicant: Honda Motor Co., Ltd. Agent
Person Patent Attorney Part 2 1) Yong-Immediate Question Patent Attorney
Kuni Ohashi Production volume Patent attorney Yu Koyama Figure 3

Claims (7)

[Claims] (1) A tilt device for a marine propulsion device in which a swivel case with a propulsion device attached to a stern bracket fixed to the hull is pivotably pivoted, and a tilt device is provided between the swivel case and the stern bracket. consists of a pressure fluid supply section and a cylinder unit operated by pressure fluid from the pressure fluid supply section, the cylinder unit is defined by a swivel case and is arranged approximately at the center in a plane parallel to the tilt axis, A tilting device for a marine propulsion device, characterized in that the supply section is divided into left and right parts with the cylinder unit at the center. (2) The tilt device for a marine vessel propulsion device according to claim 1, wherein the pressure fluid supply source includes a pump on one side of the cylinder and a reservoir tank on the other side of the motor. (3) The tilt device for a marine vessel propulsion device according to claim 1, wherein the pressure fluid supply source is offset in the longitudinal direction. (4) The tilt device for a marine vessel propulsion device according to claim 1 or 3, wherein the pressure fluid supply source has a reservoir integrally connected to the upper half of the cylinder and a pump motor integrally connected to the lower half. (5) The swivel case is characterized in that at least a part of the side surface thereof is open so that a part of the pressure fluid supply part protrudes outward beyond the swivel case. Tilt device for ship propulsion equipment. (6) The stern bracket has a mounting bolt hole and a recessed portion for avoiding interference with a part of the pressure fluid supply section. Machine tilt device. (7) The stern bracket has a mounting bolt hole, and a notch is formed below the mounting bolt hole to avoid interference with a part of the pressure fluid supply section. The tilt device for a marine vessel propulsion device according to claim 2.