JPS641357B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a power tilt device for a propulsion device mounted outboard of an inboard/outboard motor.

Prior Art and its Problems In an inboard/outboard motor, a propulsion unit placed outside the boat is stored in an upwardly tilted state when not in use. On the other hand, when sailing, the propulsion machine stored in this way is lowered downward, but in this case, when the clutch is returned from forward to neutral during sailing, the propulsion machine is moved by the inertia of the hull. In manual type models, the astern lever on the propulsion unit is locked to the thrust rod on the hull side to provide a neutral lock to prevent such a jump. The thrust force in the backward direction is supported, and on the other hand, when the propulsion device collides with an obstacle, the astern lever and the thrust rod are disengaged, the propulsion device tilts up, and damage is prevented.
Therefore, the propulsion unit's tilt-up mechanism has two functions: tilt-up during storage and tilt-up during collision.Moreover, during navigation, it prevents jumping when switching to neutral and supports reverse thrust. It is necessary to have a neutral lock function.

FIG. 1 shows an example of a conventional power tilt device. In this conventional example, a propulsion device 1 is supported so as to be tiltable upward about a fulcrum 2, and a power cylinder 3 is The tip of the rod is connected to the propulsion machine 1, and when it is stored, the propulsion machine 1 is tilted upward by the power cylinder 3, while the neutral lock is performed by the power cylinder 3, and the propulsion machine When the propulsion unit 1 collides with an obstacle, the hydraulic pressure of the power cylinder 3 is released to allow the propulsion unit 1 to tilt up. It has the disadvantage that it cannot follow quickly and therefore the propulsion machine is not sufficiently protected.

On the other hand, FIG. 2 shows another conventional example, in which a longitudinal power cylinder 3, which is arranged to protrude slightly diagonally rearward from the hull 5, is connected to one location of a tilt plate 6, which is also pivoted on the hull 5 side. Then, the tilt plate 6 is pushed up from below, and the propulsion unit 1 is engaged with the thrust rod 7, which is also attached to the tilt plate 6.
This is done through the tilt plate 6 and the thrust rod 7, and on the other hand, in the event of a collision, the engagement with the thrust rod 7 is disengaged and only the propulsion device 1 is tilted up. However, even in this case, after the thrust rod 7 is disengaged, the tilt-up is performed regardless of the hydraulic pressure, but such disengagement is not carried out at the same time as the moment of collision, but there is always a time difference. Therefore, it is not possible to prevent the impact force from being transmitted to the power cylinder 3 via the thrust rod 7 and tilt plate 6 at the moment of collision, and when moving backward, the power cylinder 3 itself receives thrust via the thrust rod 7 and tilt plate 6. Therefore, the structure of the pivot point and the rod connection part of the power cylinder 3 must be made high in strength.
This has the drawback of increasing costs.

The present invention eliminates these conventional drawbacks, allows the use of the thrust rod mechanism of the conventional manual type as is, and prevents the thrust during reverse movement and the impact force during a collision from being transmitted to the power cylinder. It is an object of the present invention to provide a power tilt-up device that does not require the adoption of a high-strength structure for the pivot portion or rod connection portion of a power cylinder.

Means for Solving the Problems In order to achieve such an object, the present invention tilts and rotates upward with respect to the hull side, and
In an inboard-outboard propulsion engine that is engaged with a thrust rod on the hull side when it collides with an obstacle during forward cruising, it disengages and tilts up, but the thrust in the astern direction is still supported. A tilt bracket is pivotably mounted so as to be rotatable within several planes, the upper end of a power cylinder arranged vertically is pivoted to the hull side, and the lower end of the power cylinder is similarly pivoted to one end of the tilt bracket. At the same time, when the power cylinder rotates the push-up member provided at the other end of the tilt bracket, the push-up member pushes the propulsion device upward and tilts it up, but only the propulsion device tilts up. The device is characterized in that it is located on the front rear side of the propulsion device without being connected to the propulsion device so that it can be tilted up independently of the tilt bracket when moving.

Embodiment The structure of the present invention will be explained below based on an illustrated embodiment. Before that, it is necessary to explain the structure of a manual tilt-up device in which the present invention is used.
As it is considered useful for understanding this invention,
This will be explained based on FIG.

Therefore, in FIG. 3, reference numeral 11 denotes a transom plate fixed to the rear surface of the transom 12a of the hull 12, and a swivel plate is attached to the tip of a hanging bracket 13 protruding from the vertically intermediate portion of the transom plate 11 via a bearing pin 14. The upper end of the fork 15 is pivotally connected, and as is well known, the propulsion unit main body 16 is supported on the lower end of the swivel fork 15 so as to be able to swing left and right. In this specification, the propulsion device 10 refers to these swivel fork 1
5 and the propulsion unit body 16 are integrated. On the other hand, 17 is a thrust bracket that similarly projects rearward from the lower end of the transom plate 11, and an astern lever 19 that projects forward from the swivel fork 15 is attached to a left-right thrust rod 18 attached to the rear end of the thrust bracket 17. When engaged, the thrust rod 18 and the astern lever 19 are engaged to provide a neutral lock and to support thrust during reverse movement.Tilt-up during storage and during a collision is performed by disengaging the thrust rod 18 and the astern lever 19.

Now, in the present invention, the manual tilt-up device as described above is constructed as shown in FIGS. 4 and 5 to perform power tilt-up during storage. Note that the same reference numerals are used for the same parts as in FIG. 3.

That is, as shown in FIG. 5, a pair of suspension stands 20 are installed near the upper end of the transom 12a on both the left and right sides of the transom plate 11, so that the bolts 21
A pair of left and right hydraulic power cylinders 22 are fixed to the hanging table 20 and are arranged vertically.
is suspended and supported via a fulcrum pin 23 at its upper bottom end so as to be swingable back and forth. Note that FIG. 5 shows only the left half of the device, and the omitted right half has the same structure and is symmetrical to the left half.

Reference numeral 24 denotes a pair of left and right tilt brackets formed in an L-shape as shown in FIG.
4 so as to be rotatable in a vertical plane in the front and back direction,
One end 24a thereof protrudes forward and is pivotally connected to the tip of the rod 22a of the power cylinder 22. On the other hand, the other end 24b of the tilt bracket 24
protrudes toward the rear side of the swivel fork 15, and as shown in FIG. 25 is located at the swivel fork 15, that is, at the rear of the front part of the propulsion machine without being connected to the propulsion machine side. The tilt rod 25 may be formed integrally with the tilt bracket 24, or the other end 24b of the tilt bracket 24 may be similarly bent inward so that the tilt rod 25 is not used.

The astern lever 19 is pivoted to the protrusion 15a at the lower end of the swivel fork 15 via a support shaft 26 so as to be movable up and down, and a notch 27 formed at the lower end of the astern lever 19 is connected to the thrust bracket. The astern lever 19 and the thrust rod 18 are engaged by the spring 28 which is also provided between the astern lever 19 and the swivel fork 15.
is always biased to be engaged.

In the above configuration, when hydraulic pressure is supplied to the power cylinder 22 and the rod 22a is extended,
This rod 22a presses down and rotates one end 24a of the tilt bracket 24, and then the rod 25 at the other end 24b of the tilt bracket 24 contacts the back surface of the swivel fork 15 and rotates the swivel fork 15 backward. Because I'm trying to make you
This force causes the astern lever 19 to rotate in the direction against the spring 28, causing the thrust rod 1 to rotate.
8 is disengaged, and the propulsion device 16 is tilted upward via the swivel fork 15. In addition, in the state shown in FIG. 4, the propulsion device 1
0 In particular, when the main body 16 collides with an obstacle, the astern lever 19 and the thrust rod 18 are similarly disengaged, and the propulsion device 16 tilts and rotates independently of the power cylinder 22 and the tilt bracket 24. This will save you from damage.

That is, the push-up member 25 of the tilt bracket 24
and the propulsion device 10 means the power cylinder 22
When the tilt bracket 24 rotates, the push-up member 25 pushes the propulsion device 10 upward and tilts it up. However, when only the propulsion device 10 rotates, it can be tilted up independently of the tilt bracket 24. The propulsion device 10 can be tilted upwardly with respect to a tilt bracket 24.

Effects of the Invention As described above, according to the present invention, tilt-up during storage can be performed by hydraulic operation, so even if it is difficult to tilt-up due to the heavy propulsion unit or the shape of the hull, it can be done by remote control. Can be tilted up easily. especially,
In the present invention, locking during neutral switching and support of backward thrust can be performed by the thrust rods on the propulsion unit side and the hull side as before, and this thrust rod is attached to a tilt bracket that rotates independently of the thrust rod. There is no need for such a conventional neutral lock mechanism to be used as is. In addition, in the present invention, as described above, the thrust during astern movement is supported by the astern lever on the propulsion machine side and the thrust rod on the hull side, and when only the propulsion machine tilts and rotates, it is supported independently of the tilt bracket. Because it can tilt and rotate, neither the thrust force during reversing nor the impact force during a collision is applied to the power cylinder at all, so it is necessary to adopt a high-strength structure for the power cylinder's pivot joint and rod connection part. This has the advantage that it can be produced at a lower cost.

[Brief explanation of drawings]

1 and 2 are schematic side views showing a conventional example, FIG. 3 is a side view showing a conventional manual tilt-up structure, and FIG. 4 is a side view of main parts showing an embodiment of the present invention. FIG. 5 is a front view similarly seen from the rear. 10... Propulsion machine, 12... Hull, 15... Swivel fork, 16... Propulsion machine body, 18... Thrust rod, 22... Power cylinder, 24...
...Tilt bracket, 24a...One end of the tilt bracket, 24b...Other end of the tilt bracket,
25...Tilt rod (push-up member).

Claims (1)

[Claims] 1 Tilt and rotate upward with respect to the hull side, and
In an inboard-outboard propulsion engine that is engaged with a thrust rod on the hull side when it collides with an obstacle during forward cruising, it disengages and tilts up, but the thrust in the astern direction is still supported. A tilt bracket is pivotally attached so as to be rotatable in a vertical plane, the upper end of a power cylinder arranged vertically is pivoted to the hull side, and the lower end of the power cylinder is similarly pivoted to one end of the tilt bracket. At the same time, when the power cylinder rotates the push-up member provided at the other end of the tilt bracket, the push-up member pushes the propulsion device upward and tilts it up, but only the propulsion device tilts up. A power tilt device for a propulsion machine in an inboard/outboard motor, characterized in that the propulsion machine is located at the front rear side of the propulsion machine without being connected to the propulsion machine so that the tilt bracket can be tilted up independently of the tilt bracket when the motor is moving.