JPS61108097A - Support device for outboard motor - Google Patents

Abstract

PURPOSE:To prevent engine vibration from being transmitted to the hull side by joining the first swivel bracket, supported by a clamp bracket, with the second swivel bracket, supporting a casing, through a vibration-proof member. CONSTITUTION:A swivel bracket 14 is divided into the first swivel bracket 21, supported by a clamp bracket 12 through a tilt shaft 13, and the second swivel bracket 22, supporting a casing 17. The first swivel bracket 21 and the second swivel bracket 22 are joined by a vibration-proof rubber 23 as a vibration-proof member. For an outboard motor 10, a bush 16 is interposed between the second swivel bracket 22 and the casing 17, and even in case an engine vibration on the casing 17 side is transmitted to the second swivel bracket 22 through the bush 16, the vibration is absorbed by vibration-proof members 23, 25 and not transmitted to the tilt shaft 13.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a support device for an outboard motor.

[Background technology]

Conventionally, as a support device for an outboard motor, a swivel bracket is tiltably supported via a tilt shaft on a clamp bracket fixed to the stern plate, and the swivel bracket is abutted against a retaining member attached to the clamp bracket to swivel the motor. The bracket can be held at a predetermined position in the tilting direction,
Attach the casing to the swivel bracket via the vibration isolating member.
One that is supported by 60 degrees of rotation has been proposed.

According to the above support device, by making the casing itself function as a steering shaft for the swivel bracket, it is possible to steer the casing 380 degrees with a simple structure.

[Problems to be Solved by the Invention] However, in the above-described support device for an outboard motor, the vibration isolating member between the swivel bracket and the casing reliably supports the casing and allows the casing to rotate. Therefore, it is necessary to increase the hardness of the vibration isolating member, and as a result, the vibration isolating member cannot be given sufficient vibration absorption capacity. There is a problem in that the vibrations transmitted to the swivel bracket are transmitted to the clamp bracket via the tilt shaft and the stop member, and are further transmitted to the hull side.

In addition, in the above-mentioned outboard motor support device, when the casing is steered at a large angle, a large twist occurs in the vibration isolating member, causing the swivel bracket to swing from side to side, causing interference between the swivel bracket and the clamp bracket. There is a risk that this may occur. Therefore, in this case, a disadvantage arises in that the vibration transmitted to the swivel bracket via the hard vibration isolating member is transmitted to the clamp bracket via the interference point between the swivel bracket and the clamp bracket, and is further transmitted to the hull side.

SUMMARY OF THE INVENTION An object of the present invention is to provide a support device that prevents engine vibrations from being transmitted to the clamp bracket even if they are transmitted to the swivel bracket.

[Means for Solving the Problems] The present invention includes a clamp bracket fixed to a stern plate that tiltably supports a swivel bracket via a tilt axis, and a stop member attached to the clamp bracket that impinges the swivel bracket. In an outboard motor support device, the swivel bracket can be held at a predetermined position in the tilting direction, and the casing is rotatably supported by the swivel bracket through 380 degrees. and a second swivel bracket that supports the casing are coupled via a vibration isolating member to form the swivel bracket, and between the abutment portion of the second swivel bracket that abuts against the stop member and the stop member. A vibration isolating member is disposed on the clamp bracket, and the clamp bracket is extended to a region sandwiching both sides of the second swivel bracket, and the vibration isolating member is disposed between the inner surface of the clamp bracket and the outer surface of the second swivel bracket, which face each other. It is designed so that .

[Function] According to the present invention, the coupling portion between the second swivel bracket supporting the casing and the first swivel bracket supported by the clamp bracket, and the collision between the second swivel bracket and the retaining member attached to the clamp bracket are reduced. By interposing a vibration isolating member at each of the parts where there is a risk of interference between the second swivel bracket and the clamp bracket, even if the engine motion is transmitted to the swivel bracket, it will not affect the swivel bracket. The transmitted engine vibrations are absorbed by the vibration isolating members and are not transmitted to the clamp bracket.

[Embodiment] Fig. 1 shows an outboard motor lO to which an embodiment of the present invention is applied.
FIG. 2 is a side view showing the main part of FIG. 1, FIG. 3 is a sectional view taken along the line ■-■ in FIG. 2, and FIG. It is a cross-sectional view along the ff-ff line.

In this outboard motor 10, as shown in FIG. The swivel bracket 14 can be held in a predetermined position in the tilting direction by abutting the swivel bracket 14 against a retaining pin 15 as a retaining member.
The casing 17 is rotatably supported through 380 degrees. Here, the retaining pin 15 is a clamp bracket) 1
The swivel bracket 14 can be inserted into any one of a plurality of insertion holes 18 provided in the swivel bracket 14, and the inclination position of the swivel bracket 14 can be adjusted by abutment between the swivel bracket 14 and the stop pin 15. An engine 19 is mounted on the upper part of the casing 17, and the output of the engine 19 can drive a propeller 20 via a drive shaft vertically installed inside the casing 17.

Here, as shown in FIGS. 2 and 3, the swivel bracket 14 includes an if swivel bracket 21 supported by the clamp bracket 12 via the tilt shaft 13, and a wS2 swivel bracket 22 that supports the casing 17. It is divided. The first swivel bracket 21 and the second swivel bracket 22 are coupled via a vibration isolating rubber 23 as a vibration isolating member. That is, as shown in FIG. 2, the first swivel bracket) 21 is divided into two, an upper bracket) 21A and a lower bracket) 21B, and a bolt 24 is inserted between the two brackets) 21A and 21B as a core material. The vibration isolating rubber 23 can be held under pressure. 23A
, 23B are an inner cylinder and an outer cylinder attached to the inside and outside of the vibration isolating rubber 23, respectively. A vibration isolating rubber 25 is interposed between the head 24A of the bolt 24 and the first swivel bracket 21. As a result, 1. the bolt 24 does not come into direct contact with the first swivel bracket 21, and the vibration isolating rubber 2
3.25, it can be integrated into the first swivel bracket 21. The tip of the bolt 24 has a threaded portion 24B, and the upper portion of the second swivel bracket 22 is fixed to the threaded portion 24B of the bolt 24 with a nut 26.

Here, a constant gap g as shown in FIG. 2 is formed between the first swivel bracket 21 and the second swivel bracket 22 due to the presence of the inner cylinder 23B.

In addition, in this outboard 41110, as shown in FIG. 2, a vibration isolating rubber 27 is attached as a vibration isolating member to the abutting portion of the second swivel bracket 22 that abuts against the retaining pin 15 by gluing or the like. Fixed.

Furthermore, in this outboard motor IO, as shown in FIG. 4, the clamp bracket 12 is extended to a region sandwiching both sides of the second swivel bracket 22. A vibration isolating rubber 28 as a vibration isolating member is fixed between the inner surface and the outer surface of the second swivel bracket 22 by adhesive or the like. In addition, in Fig. 4,
Reference numeral 29 denotes guide portions that are provided on both sides of the second swivel bracket 22 and come into sliding contact with the vibration isolating rubber 28 of the clamp bracket 12 when the second swivel bracket 22 is tilted.

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

In this outboard motor lO, the second swivel bracket 2
A bushing 16 made of relatively hard vibration-proof rubber or the like is interposed between the casing 17 and the casing 17.
Even if side engine vibration is transmitted to the second swivel bracket 22 via the bushing 16, the vibration transmitted to the second swivel bracket 22 is transmitted to the vibration isolating rubber 23.25.
without being absorbed by the vibration isolating rubber 27 and transmitted to the tilt shaft 13, and without being absorbed by the vibration isolating rubber 27 and transmitted to the stop bottle 15.
As a result, it is not transmitted to the clamp bracket 12 or the hull side.

Furthermore, even if the second swivel bracket 22 swings left and right by steering the casing 17 at a large angle, the second swivel bracket 22 will not contact the vibration isolating rubber 28 and interfere with the clamp bracket 12. There is no such second swivel bracket 22.
Even when rocking.

the second swivel bracket 22 via the bushing 16;
The vibration transmitted to the vibration is absorbed by the vibration isolating rubber 28 and is not transmitted to the clamp bracket 12 or the hull side.

[Effects of the Invention] As described above, the present invention tiltably supports a swivel bracket via a tilt fd on a clamp bracket fixed to a stern plate, and impinges the swivel bracket on a stop member attached to the clamp bracket. In an outboard motor support device, the swivel bracket can be held at a predetermined position in the tilting direction, and a casing is rotatably supported on the swivel bracket by 360 degrees. The swivel bracket is formed by coupling a second swivel bracket that supports two casings via a vibration isolating member, and between the abutting portion of the second swivel bracket that abuts the stopper member and the stopper member. A vibration isolating member is provided, the clamp bracket is extended to an area sandwiching both sides of the second swivel bracket, and the vibration isolating member is provided between the inner surface of the clamp bracket and the outer surface of the second swivel bracket that face each other. It is designed so that . Therefore, the joint between the second swivel bracket supporting the casing and the first swivel bracket supported by the clamp bracket,
By interposing a vibration isolating member in each of the abutting parts of the second swivel bracket and the stop member attached to the clamp bracket, and the parts where there is a possibility of interference between the second swivel bracket and the clamp bracket, engine vibrations can be prevented. Even if the vibration is transmitted to the swivel bracket, it is possible to reliably eliminate the possibility that the vibration is transmitted to the clamp bracket and eventually to the hull side.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of an outboard motor to which an embodiment of the present invention is applied; FIG. 2 is a side view of the main part of FIG. 1;
Figure 3 is a cross-sectional view taken along the line m-■ in Figure 2, and Figure 4 is a cross-sectional view along line m-■ in Figure 2.
It is a sectional view taken along line 17-IV in the figure. 10... Outboard motor, 11... Stern plate, 12... Clamp bracket, 13... Tilt shaft, 14... Swivel bracket), 15... Retaining pin. 17...Casing, 19...Engine, 21...
・First switch racket. 22...Second switch racket, 23.27.28...Vibration isolating rubber.

Claims (1)

[Claims] (1) A swivel bracket is tiltably supported via a tilt axis on a clamp bracket fixed to the stern plate, and the swivel bracket is brought into contact with a stop member attached to the clamp bracket to set the swivel bracket in the predetermined direction of tilting. In an outboard motor support device in which a casing is rotatably supported by a swivel bracket and can be held in position, the outboard motor includes a first swivel bracket supported by the clamp bracket and a second swivel bracket supporting the casing. The swivel bracket is formed by coupling via a vibration isolating member, and the vibration isolating member is disposed between the abutting portion of the second swivel bracket that abuts the retaining member and the retaining member, and the clamp bracket is fixed to the clamp bracket. An outboard motor characterized in that a vibration isolating member is provided between the inner surface of the clamp bracket and the outer surface of the second swivel bracket, which extend to a region sandwiching both sides of the second swivel bracket and are opposed to each other. support device.