JPH11334692A - Trim device for outboard engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trim device for an outboard engine that makes it possible to perform trimming operation using a small clamp bracket without extending the rear surface of the clamp bracket, which can be applied to a large propelling unit. SOLUTION: The trim device for outboard engine is provided with a first bracket 3 fixed to a ship body, a second bracket 5 pivotally supported by the first bracket 3 via a tilt axis 4 which can rotate in the vertical direction, and a propelling unit installed to the second bracket 5 to be movable in the horizontal direction. A rear surface 3a of the first bracket 3 is hung near the vertical line so as to form a lateral pressure reception surface 24 where the first bracket 3 abuts against the second bracket 5 in the lateral direction during maximum trim up.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention belongs to the technical field of an outboard motor trim device.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional outboard motor trim device, in which FIG. 4A is a side view showing a trim down state, FIG. 4B is a side view showing a trim up state, and FIG. )
Is a plan view. In the outboard motor, a pair of right and left clamp brackets 3 is attached to the rear part of the hull 2 and a swivel bracket 5 is pivotally supported between the clamp brackets 3 via a tilt 4 shaft so as to be vertically rotatable. The steering bracket 6 is rotatably supported in the horizontal direction via a steering shaft 6a so that the propulsion unit 9 is supported by the steering bracket. A hydraulic cylinder 17 is disposed between the clamp bracket 3 and the swivel bracket 5, and the hydraulic cylinder 17 is provided.
Are formed with a plurality of trim pin holes 22. Then, the hydraulic cylinder 17 is expanded and contracted by operating the manual lever, the swivel bracket 5 is rotated in the vertical direction, and the trim pin 23 is inserted into the trim pin hole 22 at a desired position. Trim-up and down to set the tilting posture are performed.

[0003]

By the way, in the outboard motor, when the rotational thrust of the propeller is applied to the propulsion unit,
A lateral load acts on the propulsion unit, and this load is transmitted from the swivel bracket 5 to the clamp bracket 3 on the lateral pressure receiving surface 24 where the swivel bracket 5 and the clamp bracket 3 abut, so that the hull can move forward or backward. ing. Therefore, in the above-described conventional trim device, as shown in FIG. (B), in order to transmit the lateral force by the lateral pressure receiving surface 24 at the maximum trim-up position,
The rear surface 3a of the clamp bracket 3 extends rearward. At this time, as shown in FIG. 9C, when the propulsion unit 9 is rotated during steering, it is necessary to secure a predetermined interval L so that the propulsion unit 9A does not contact the rear surface 3a of the clamp bracket 3. . as a result,
When a large-sized propulsion unit 9 such as a four-stroke engine having an oil pan formed therein is employed, there has been a problem that a predetermined interval L cannot be secured with the structure of the conventional trim device.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and enables trim operation with a small clamp bracket without extending the rear surface of the clamp bracket, so that it can be applied to a large propulsion unit. It is an object to provide a machine trim device.

[0005]

According to a first aspect of the present invention, a first bracket 3 fixed to a hull 2 and a first bracket 3 are attached to the first bracket via a tilt shaft 4. Second bracket 5 pivotally supported in a direction
And a propulsion unit 9 mounted on the second bracket so as to be rotatable in the horizontal direction.
The rear surface 3a is made to hang down close to the vertical line, and a horizontal pressure receiving surface 24 is formed on the first bracket 3 and the second bracket 5 so that they abut in the horizontal direction at the time of maximum trim up. According to a second aspect of the present invention, in the first aspect, the first bracket 3 has a plurality of trim pin holes 22a on a substantially circular arc centered on the tilt shaft 4.
And a plurality of trim pin holes 22b are similarly formed above the trim pin holes. The invention according to claim 3, wherein the second bracket 5 and the second Hydraulic cylinder 1 on bracket 3
7 are connected. Note that the numbers added to the above configuration are compared with the drawings for easy understanding of the present invention, and the present invention is not limited thereto.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an example of an outboard motor to which the present invention is applied. The outboard motor 1 includes a pair of left and right clamp brackets 3 that are detachably attached to a rear portion of the hull 2, and a swivel bracket 5 that is pivotally supported between the clamp brackets 3 via a tilt shaft 4 so as to be vertically rotatable. A bearing 7 provided at the lower end of the through hole of the swivel bracket 5, a steering bracket 6 pivotally supported in a horizontal direction via a steering shaft 6a supported by the bearing 7, and a steering bracket 6 Mount 8
And a propulsion unit 9 supported via the

The propulsion unit 9 has an upper case 10 supported by the steering bracket 6, an engine (not shown) is mounted on the upper case 10, and a lower cowling 11 covering the lower part of the engine is provided. An upper cowling 12 that covers the upper portion of the engine is detachably attached to the lower cowling 11. Further, a lower case 13 is connected to a lower portion of the upper case 10, and the upper case 10 and the lower case 13 constitute a casing of the propulsion unit 9. In addition, 1
Reference numeral 4 denotes a propeller mounted on the lower case 13.

2 and 3 show an embodiment of an outboard motor trim apparatus according to the present invention. FIG. 2 is an exploded perspective view of a main part of FIG. 1, and FIG. 3 (A) is a side view of a main part of FIG. FIG. 3B is a cross-sectional view taken along line BB in FIG. 3A at the time of maximum trim-up and viewed in the direction of the arrow, and FIG. 3C is C of FIG. 3A at the time of minimum trim-down. It is sectional drawing cut | disconnected by the -C line and seen in the arrow direction. In the following description, the same components are denoted by the same reference numerals in the drawings, and the description may be omitted.

FIG. 2 shows a pair of clamp bracket 3, tilt shaft 4, swivel bracket 5,
A steering bracket 6, a steering shaft 6a, a bearing 7, a mount 8, and an upper case 10 are shown. The swivel bracket 5 has a cylindrical through hole 5a, into which the steering shaft 6a of the steering bracket 6 is inserted and supported by a bearing 7. Upper case 10
Is fixed to a bearing 7 via a mount 8.
Furthermore, the lower end is supported by the clamp shaft 3 by the support shaft 15.
A hydraulic cylinder 17 pivotally supported by the hydraulic cylinder 17, a hydraulic pump 19 for supplying and discharging oil to and from the hydraulic cylinder 17, and a hydraulic pump 19
An electric motor 20 for driving the motor and wiring 21 of the electric motor 20 are shown. Then, a plurality of trim pin holes 22 are formed in the clamp bracket 3, and trim pins 23 are inserted into the trim pin holes 22. A lateral pressure receiving surface 24 is formed on the clamp bracket 3 and the swivel bracket 5.

In this embodiment, the hydraulic cylinder 17 controlled by the electric motor 20 is employed. In this case, it is not necessary to use a tilt pin, but the hydraulic cylinder 17 is expanded and contracted by operating a manual lever. The swivel bracket 5 is rotated up and down so that the trim pin 23 can be inserted into the trim pin hole 22 at a desired position.

In FIG. 3, three trim pin holes 22a are formed on the clamp bracket 3 on a substantially circular arc centered on the tilt shaft 4, and two trim pin holes 22b are similarly formed above the trim pin holes 22a. Is formed. As described above, by forming the trim pin holes 22a in two stages, the rear surface 3a of the clamp bracket 3 can be shifted to the left in the drawing. On the other hand, on the front surface 5b of the swivel bracket 5, first and second locking portions 25a and 25b are formed, and the first locking portion 25a is formed.
Locks the swivel bracket 5 when the trim pin 23 is inserted into the lower trim pin hole 22a, and the second locking portion 25b engages the swivel bracket 5 when the trim pin 23 is inserted into the upper trim pin hole 22b. Stop.

The trim pin 23 is not a pin that penetrates the clamp bracket 3 as in the prior art, but is a pin that supports only the front edge 5b of the swivel bracket 5 as shown in FIG. The hydraulic cylinder 17 can be disposed in the inside 3.

FIG. 3A shows that the swivel bracket 5 has a minimum trim down position 5A, an intermediate trim up position 5B,
The state of rotation with the maximum trim-up position 5C is indicated by a dashed line, and the rear surface 3a of the clamp bracket 3 is hung so as to be close to the vertical line, and at the maximum trim-up position 5C, as shown in FIG. The clamp bracket 3 and the swivel bracket 5 have a convex lateral pressure receiving surface 24 that abuts in the lateral direction. When the trim pin 23 is inserted into the lower trim pin hole 22a, the trim pin 23 is received by the lateral pressure receiving surface near the trim pin hole 22a.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made. For example, in the above-described embodiment, a hydraulic cylinder controlled by an electric motor or a model applicable to both methods of performing trim up and down with a trim pin hole and a trim pin has been described, but a hydraulic cylinder controlled by an electric motor without a trim pin is described. You may apply to the system which performs trim up and down with a cylinder.

[0015]

As is apparent from the above description, according to the first aspect of the present invention, the trim operation can be performed with the small clamp bracket without extending the rear surface of the clamp bracket, and the large propulsion unit can be used. According to the second aspect of the invention, the rear surface of the clamp bracket is not extended, and according to the third aspect of the invention, the invention is also applied to a trim device using a hydraulic cylinder. It becomes possible.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of an outboard motor to which the present invention is applied.

FIG. 2 is an exploded perspective view of a main part of FIG. 1 showing an embodiment of a trim device for an outboard motor according to the present invention.

3 (A) is a side view of a main part of FIG. 2, and FIG. 3 (B) is a cross-sectional view taken along the line BB of FIG. FIG. 3C is a cross-sectional view taken along the line CC of FIG. 3A at the time of the minimum trim down and viewed in the direction of the arrow.

FIG. 4 shows a conventional outboard motor trim device, and FIG.
4B is a side view showing a trimmed down state, FIG. 4B is a side view showing a trimmed up state, and FIG. 4C is a plan view.

[Explanation of symbols]

2 ... hull 3 ... clamp bracket (first bracket), 3a ...
Rear surface 4 ... Tilt axis 5 ... Swivel bracket (second bracket) 9 ... Propulsion unit 17 ... Hydraulic cylinder 24 ... Lateral pressure receiving surface

Claims (3)

[Claims] 1. A first bracket fixed to a hull, a second bracket pivotally supported by the first bracket via a tilt shaft so as to be vertically rotatable, and a second bracket attached to the first bracket. A propulsion unit rotatably mounted in the horizontal direction, wherein the rear surface of the first bracket is hung down close to a vertical line, and at the time of maximum trim up, the first bracket and the second bracket are A trim device for an outboard motor, characterized in that a lateral pressure receiving surface is formed in which both abut against each other in a lateral direction. 2. A plurality of trim pin holes are formed in the first bracket on a substantially circular arc centered on the tilt axis,
2. The trim device for an outboard motor according to claim 1, wherein a plurality of trim pin holes are similarly formed above the trim pin holes. 3. The outboard motor trim device according to claim 1, wherein a hydraulic cylinder is connected to the second bracket and the first bracket.