JP2888378B2 - Outboard tilt device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt device for an outboard motor.

[0002]

2. Description of the Related Art Conventionally, there is a tilt device for an outboard motor as disclosed in Japanese Utility Model Laid-Open No. 59-164805. In this prior art, a tilt cylinder device is interposed between a clamp bracket and a swivel bracket, and a pump unit is disposed outside a boat.

[0003] According to this prior art, there is no pump unit in the space between the clamp bracket and the swivel bracket, and only the tilt cylinder device is arranged. Therefore, the outboard bracket can be made compact.

[0004]

However, in the prior art, since the pump unit is disposed outside the boat, the following is required.
There is a problem.

[0005] The pump unit may be damaged or corrode.

The pump unit cannot be detached from the hull together with the outboard motor.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a tilt cylinder device while reducing the size of an outboard bracket, improve the protection and corrosion resistance of a pump unit, and make the pump unit detachable from a hull together with an outboard motor. And

[0008]

SUMMARY OF THE INVENTION The present invention is directed to a clamp bracket fixed to a stern plate, a swivel bracket supported by the clamp bracket to be tiltable and supporting a propulsion unit, and a swivel bracket between the clamp bracket and the swivel bracket. In a tilt device of an outboard motor having a tilt cylinder device interposed in the vehicle and a pump unit for driving the tilt cylinder device, the pump unit is moved to a position inside the stern plate from the stern plate of the clamp bracket. It is fixed.

[0009]

According to the present invention, the tilt cylinder device is interposed between the clamp bracket and the swivel bracket, and the pump unit is fixed at a position inside the ship from the stern plate of the clamp bracket. There is.

[0010] Since there is no pump unit in the space between the clamp bracket and the swivel bracket and only the tilt cylinder device is arranged, the tilt cylinder device can be provided while the outboard bracket is made compact.

[0011] The pump unit is placed on the left and right
Because it was positioned horizontally, seawater accumulated at the bottom of the hull
In addition, protection and corrosion resistance of the pump unit can be secured.
In addition, the pump unit has a reservoir located on top of it.
Therefore, the air bleeding property is also good.

Since the pump unit is fixed to the clamp bracket, the pump unit can be attached to and detached from the hull together with the outboard motor.

[0013]

FIG. 1 is a side view showing a first embodiment of the present invention, FIG. 2 is a front view of a main part of FIG. 1, FIG. 3 is a hydraulic circuit diagram, and FIG. 4 is a schematic diagram showing a second embodiment of the present invention. FIG. 5 and FIG. 5 are hydraulic circuit diagrams.

(First Embodiment) An outboard motor 10 includes a stern plate 11
And a swivel bracket 14 is tilted up via a tilt shaft 13 spanned between upper ends of both clamp brackets 12.
The propulsion unit 16 is supported so that it can be turned down, and the swivel bracket 14 can turn the propulsion unit 16 via the turning shaft 15. The propulsion unit 16 enables the propeller 18 to be driven by the output of the upper engine unit 17.

The outboard motor 10 has a tilt cylinder device 19 interposed between the clamp bracket 12 and the swivel bracket 14, and a pump unit 20 for driving the tilt cylinder device 19 and a stern plate 11 of the clamp bracket 12. It is fixed at a position inside the ship.

The tilt cylinder device 19 pivotally connects the cylinder 22 to a pin 21 which is bridged between the lower ends of the clamp brackets 12, and the piston 2 inserted into the cylinder 22
3 is connected to the pin 25 on the side of the swivel bracket 14.
It is connected to The cylinder 22 is partitioned into an upper chamber 26A and a lower chamber 26B by a piston 23, and a free piston 27 is disposed in the lower chamber 26B. And the piston 23
Is provided with a shock absorbing valve 28 and a check valve 29 in each of two passages connecting the upper chamber 26A and the lower chamber 26B.

The pump unit 20 is fixed to a mounting portion 12A of one of the clamp brackets 12 provided at a position inside the stern plate 11 from the stern plate 11 by bolts 30 from the side thereof. Is done. Pump unit 20, as shown in FIGS. 1 to 3, the left
The pump 31 and the motor 32 extending to the right and above
In addition to integrally having a reservoir 33 connected to the pump 31 and extending left and right , a main open / close valve 34, relief valves 35, 36, 3
7. Built-in check valves 38, 39 and manual valve 40.

The manual valve 40 is provided at a position facing the inside of the ship, and can be easily operated from inside the ship.

The tilt cylinder device 19 and the pump unit 20 are connected by an upper chamber side pipe 41 and a lower chamber side pipe 42.

Here, the tilt up / down operation by the tilt cylinder device 19 is as follows.

When the pump 31 is rotated forward by the motor 32, the oil discharged from the pump 31 is supplied to the check valve 3 of the main on-off valve 34.
4A, open the lower chamber side pipe 42 to the lower chamber 2 of the cylinder 22.
6B, the rod 24 is extended and the propulsion unit 1
6. Tilt up. At this time, the oil in the upper chamber 26A returns from the upper chamber side pipe line 41 to the pump 31 through the check valve 34C opened by the piston 34B of the main on-off valve 34.

On the other hand, when the pump 31 rotates in the reverse direction by the motor 32, the oil discharged from the pump 31 opens the check valve 34C of the main on-off valve 34 and is sent from the upper chamber side pipe 41 to the upper chamber 26A of the cylinder 22, The rod 24 is contracted to tilt down the propulsion unit 16. At this time, the oil in the lower chamber 26B returns from the lower chamber pipe 42 to the pump 31 through the check valve 34A opened by the piston 34B of the main on-off valve 34.

Next, the operation of the above embodiment will be described.

According to the above-described embodiment, the tilt cylinder device 19 is interposed between the clamp bracket 12 and the swivel bracket 14, and the pump unit 20 is fixed at a position inside the stern plate 11 of the clamp bracket 12 from the stern. Therefore, there are the following effects.

Since there is no pump unit 20 in the space between the clamp bracket 12 and the swivel bracket 14 and only the tilt cylinder device 19 is provided, the outboard brackets 12 and 14 are provided with the tilt cylinder device 19 while being compact. Can be.

The pump unit 20 is located at the upper
Since it was positioned horizontally to the right, seawater collected at the bottom of the hull
Harder to protect pump unit 20 and ensure corrosion resistance
it can. Further, the pump unit 20 has a reservoir
Since the bar 33 is located, the air bleeding property is also good.

Since the pump unit 20 is fixed to the clamp bracket 12, the pump unit 20 can be attached to and detached from the hull together with the outboard motor 10.

(Second Embodiment) The second embodiment is different from the first embodiment in that not only the tilt cylinder device 19 is interposed between the clamp bracket 12 and the swivel bracket 14, but also shown in FIG. As described above, the trim cylinder device 51 is also interposed. The trim cylinder device 51 is provided with a pin 5 bridged between lower end portions of both clamp brackets 12.
The swivel bracket 14 has a rod 55 of a piston 54 inserted in the cylinder 53 and pivotally connected to the swivel bracket 14. Cylinder 5
3 is partitioned by a piston 54 into an upper chamber 56A and a lower chamber 56B.

Further, similarly to the first embodiment, the pump unit 20 is provided with the stern plate 11 of one clamp bracket 12.
As the mounting portion 12A provided in the more becomes the inboard portion position
A pump 61 and a motor 62 , which are fixed from the side by bolts and extend left and right, as shown in FIG.
Reservoir 63 connected to pump 61 above and extending left and right
, The main opening / closing valve 64, the relief valves 65 and 6
6 built-in.

The tilt cylinder device 19 and the pump unit 20 are connected by the upper chamber side pipe 67, and the trim cylinder apparatus 51 and the pump unit 20 are connected by the upper chamber side pipe 68 and the lower chamber side pipe 69. The tilt cylinder device 19 and the trim cylinder device 51 are connected to the lower chamber side pipe 7.
It is contacted by 0.

Here, the tilt up / down operation by the tilt cylinder device 19 and the trim cylinder device 51 is as follows.

When the pump 61 rotates forward by the motor 62, the oil in the reservoir 63 is supplied to the pump 61 through the pipe 80, and the oil in the upper chamber 26A passes through the upper pipe 67 as described below. Is supplied to the pump 61. The discharge oil from the pump 61 opens the check valve 64A of the main opening / closing valve 64 and is sent from the lower chamber side pipes 69 and 70 to the lower chambers 26B and 56B of the cylinders 22 and 53 to extend the rods 24 and 55. The propulsion unit 16 is tilted up. At this time, the oil in the upper chamber 26A flows from the upper chamber side pipe line 67 to the main opening / closing valve 6.
Check valve 64C opened by the piston 64B of No. 4
And returns to the pump 61. The oil in the upper chamber 56A returns to the reservoir 63 through the upper chamber side pipe 68.

After the rod 55 of the trim cylinder device 51 reaches the maximum extension position, only the rod 24 of the tilt cylinder device 19 extends at a higher speed, and the propulsion unit 16 is tilted to a larger tilt angle position. Can be up.

On the other hand, when the pump 61 rotates in the reverse direction by the motor 62, the oil discharged from the pump 61 opens the check valve 64C of the main opening / closing valve 64 and is sent from the upper chamber side line 67 to the upper chamber 26A of the cylinder 22. The rod 24 is contracted to tilt down the propulsion unit 16. At this time, the lower chambers 26B, 56
The oil B returns to the pump 61 from the lower chamber side pipes 69 and 70 through the check valve 64A opened by the piston 64B of the main on-off valve 64. Part of the oil discharged by the pump 61 returns to the reservoir 63 through the pipe 80. In addition, rod 5
5 is pushed down after coming into contact with the swivel bracket 14.

Next, the operation of the above embodiment will be described.

According to the above-described embodiment, the tilt cylinder device 19 is interposed between the clamp bracket 12 and the swivel bracket 14 as in the first embodiment, and the stern plate 11 of the clamp bracket 12 is connected to the inside of the ship. Since the pump unit 20 is fixed at a certain position, it has substantially the same functions and effects as those described above in the first embodiment.

[0037]

As described above, according to the present invention, the tilting cylinder device is provided while the outboard bracket is made compact, the protection and corrosion resistance of the pump unit are improved, and the pump unit is mounted together with the outboard motor on the hull. Can be attached to and detached from.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of the present invention.

FIG. 2 is a front view of a main part of FIG. 1;

FIG. 3 is a hydraulic circuit diagram.

FIG. 4 is a schematic diagram showing a second embodiment of the present invention.

FIG. 5 is a hydraulic circuit diagram.

[Description of Signs ] 10 Outboard motor 11 Stern plate 12 Clamp bracket 12A Mounting part 14 Swivel bracket 16 Propulsion unit 19 Tilt cylinder device 20 Pump unit 30 Bolt (fastening member) 31, 61 Pump 32, 62 Motor 33, 63 Reservoir

──────────────────────────────────────────────────の Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B63H 20/08

Claims (1)

(57) [Claims] 1. A clamp bracket fixed to a stern plate, a swivel bracket supported by a clamp bracket to be tiltable and supporting a propulsion unit, and a tilt cylinder device interposed between the clamp bracket and the swivel bracket And a pump unit for driving the tilt cylinder device, wherein the pump unit is mounted on a mounting portion provided at a position which is located inside the stern plate from the stern plate of the clamp bracket. Tighten from the side
The pump unit comprises a motor and a pump extending left and right.
And a reservoir connected to the pump above and extending left and right
It is made of the tilt system for an outboard motor according to claim.