JPH03246190A - Tilting device of outboard motor - Google Patents

Abstract

PURPOSE:To improve the machinability and assemblability in a manufacturing stage and maintenance ability in a usage stage by constituting the tilting device of outboard motor in such a way that the spindle of the intermediate arm of a tilt locking device and the spindle of the support arm of a tilt holding device may be coaxialized on a swivel bracket. CONSTITUTION:Support shafts 21A and 21B are arranged in nearly parallel and coaxially with a tilt shaft 13 to a swivel bracket 15, and to the support shaft 21A, a operation lever 22 is fixed, and an intermediate arm 23 for operating engaging arms 25 and 28 is fixed, and a swing arm 24 for operating a support arm 49 is fixed. The arm 49 is rotatably supported by a clamp bracket 12 through the support shafts 21A and 21B, and the head engaging section 50 of the arm 49 is engageably constituted to each of engaging step sections 46, 46A, and 47. That is, in equipping a tilt locking device and a tilt holding device, the intermediate arm 23 of the support shafts 21A and 21B of the tilt locking device and the support shafts 21A and 21B of the support arm 49 of the tilt holding device are coaxialized on the bracket 15 resulting in the simplification of the layout of the component of the bracket 15.

Description

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

[Prior Art] Conventionally, there is a tilt device for an outboard motor as described in Japanese Patent Laid-Open No. 103794/1983.

This tilt device consists of a clamp bracket that is fixed to the hull, a propulsion unit that is supported by a swivel bracket that is attached to the clamp bracket so that it can rotate up and down via a tilt axis, and a propulsion unit that rotates upward around the tilt axis. In a tilt device for an outboard motor, the tilt lock device includes a tilt lock device that prevents the propulsion unit from rotating and a tilt holding device that holds the propulsion unit in an upwardly rotated state around a tilt axis. An engagement arm that is rotatably supported by the swivel bracket and can be engaged with the locking member of the clamp bracket to lock the propulsion unit from rotating upward; and an engagement arm that is rotatably supported by the swivel bracket. and an intermediate arm that is connected to the engagement arm and rotates under the action of an operating force to drive the engagement arm, and the tilt holding device is rotatably supported on the swivel bracket. In addition, the support arm is configured to be engageable with the holding portion of the clamp bracket and to support the propulsion unit so that it does not fall from the upwardly rotated state.

According to the tilt device, the presence of the tilt lock device locks the propulsion unit during sudden deceleration and prevents the propulsion unit from floating.

Further, due to the presence of the tilt holding device, the propulsion unit can be held in a position rotated upward around the tilt axis, for example, a shallow water navigation position or a tilted up position.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional tilt device, the pivot of the intermediate arm of the tilt lock device is disposed in a limited narrow range of the swivel bracket, and the support of the tilt holding device is The layout of these components becomes complicated, such as arranging the pivot of the arm.

An object of the present invention is to simplify the layout of these components in a swivel bracket when equipped with a tilt lock device and a tilt holding device, and to improve ease of processing and assembly at the manufacturing stage and ease of maintenance at the stage of use. shall be.

[Means for Solving the Problems] The present invention includes a clamp bracket fixed to the hull, a propulsion unit supported by a swivel bracket attached to the clamp bracket so as to be vertically rotatable via a tilt axis, and a propulsion unit Tilt an outboard motor that has a tilt lock device that prevents the unit from rotating upward around the tilt axis and a tilt holding device that holds the propulsion unit in a state where it rotates upward around the tilt axis. In the device, the tilt lock device includes an engagement arm that is rotatably supported by the swivel bracket and is engageable with a locking member of the clamp bracket to lock the propulsion unit from rotating upward; The tilt holding device includes an intermediate arm that is rotatably supported by a swivel bracket, is connected to an engagement arm, and rotates under the action of an operating force to drive the engagement arm. It is rotatably supported by the swivel bracket and has a support arm that can be engaged with the holding part of the clamp bracket and supports the propulsion unit so that it does not fall from the upwardly rotated state. The pivot of the intermediate arm of the locking device and the pivot of the support arm of the tilt holding device are set on the same axis.

[Function] When equipped with a tilt lock device and a tilt holding device,
The pivot of the intermediate arm of the tilt locking device and the pivot of the support arm of the tilt holding device were made coaxial on the swivel bracket. Therefore, it is possible to simplify the layout of these components in the swivel bracket, and to improve ease of processing and assembly during manufacturing and maintenance during use.

[Example] Fig. 1 is a side view showing the outboard motor, Fig. 2 is a schematic diagram showing the tilt-down lock state in the first embodiment, and Fig. 3 is a sectional view taken along the line ■-■ in Fig. 2. , Fig. 4 is a schematic diagram showing the tilt-down lock released state, Fig. 5 is a schematic diagram showing the tilt-up holding state, Fig. 6 is a schematic diagram showing the second embodiment, and Fig. 7 is a schematic diagram showing the shallow water holding state. 8 is a schematic diagram showing the third embodiment, FIGS. 9(A) and (B) are schematic diagrams showing the fourth embodiment, and FIG. 10 is a schematic diagram showing the fifth embodiment. be.

First Embodiment (See FIGS. 1 to 5) As shown in FIG. It is provided with a swivel bracket 15 which is rotatably attached in the up and tilt down directions and supports the propulsion unit 14. The propulsion unit 14 is equipped with an engine (not shown), and the output of the engine is transmitted to the propeller 16 via a drive shaft, a forward/reverse switching device, and a propeller shaft. In addition, in FIG. 5, 17 is a shift rod constituting a forward/reverse switching device.

As shown in FIGS. 2 to 5, on the upper part of the swivel bracket 15, there are two
Two support shafts 21A and 21B are provided. Support shaft 21A
is rotatable on the swivel bracket 15.

An operating lever 22 is fixed to the end of the support shaft 21A, and the operating lever 22 is arranged on the upper side surface of the swivel bracket 15. Further, to the support shaft 21A, an intermediate arm 23 for operating an engagement arm, which will be described later, is fixed with a bolt 23A, and a swing arm 24, which will also be described later, for operating a support arm is fixed with a bolt 24A. .

On the other hand, a first engagement arm 25, a first rotation plate 8o, and a second rotation plate 81 are rotatably supported at the lower part of the swivel bracket 15 via a support shaft 26, and the first rotation plate 80 is connected to the second engagement arm 2 via the pin 27.
8 is rotatably supported.

The second rotation plate 81 is given a clockwise biasing force by the spring force of the spring 29 interposed between the second rotation plate 81 and the swivel bracket 15, and this force is applied to the second rotation plate 81 and the first engagement arm. It is transmitted to the first engagement arm 25 via the coil member 82 that connects the first engagement arm 25. That is, the first engagement arm 25 is given a biasing force in the clockwise direction away from the locking pin 30 of the clamp bracket 12 . On the other hand, the second rotation plate 81 is connected to a hook portion at the distal end of the interlocking rod 31 connected to the shift rod 17.

The second engagement arm 28 is connected to the clamp bracket 12 by the spring force of the spring 32 interposed between the second engagement arm 28 and the above-mentioned support shaft 21A.
A biasing force is applied in a counterclockwise direction to engage the locking pin 30 of the first rotating plate 8, and the first rotating plate 8 is
It engages with the stopper 80A of No. 0 and rotates together.

Further, the tip hook portion of the interlocking link 33 connected to the aforementioned intermediate arm 23 is connected to the pin 27 which is a connecting member between the first rotating plate 80 and the second engaging arm 28 .

That is, during forward shifting and neutral, the shift lot 17
and the interlocking rod 31 is located above the position shown in FIG.
The second engagement arm 28 is rotated clockwise from the position shown in the figure and set to the non-engagement position with the locking pin 30.
is set to the engagement position with the locking pin 30 by the spring force of the spring 32. During a reverse shift, the shift rod 17 and the interlocking rod 31 are in the position shown in FIG.
Due to the torsional force generated in the spring 3, the second engagement arm 28
2 are set in the engagement position with the locking pin 3o, and the propulsion unit 14 is held at a constant tilt-down position. Note that the disengagement load of the second engagement arm 28 with respect to the locking pin 30 is set to be smaller than that of the first engagement arm 25 with respect to the locking pin 30. This setting depends on the shape design of the engagement claw portion of the re-engagement arm 25,28.

Therefore, in this embodiment, the re-engaging arms 25, 28 engage with the locking pins 30 during the backward movement, so that the propulsion unit 14 can be reliably locked in the backward movement against the backward thrust. On the other hand, when moving forward, although the engagement between the first engagement arm 25 and the locking pin 30 is released, the second engagement arm 28 engages with the locking pin 30, so that the movement is not propelled relative to the coasting leg. The unit 14 can be locked and prevented from floating. Here, since the disengagement load of the second engagement arm 28 is set to be smaller than that of the first engagement arm 25, the second engagement arm 28 is able to prevent the locking pin 30 from colliding with the driftwood. The engagement can be easily released without severe wear during the process, and the propulsion unit 14 can be flipped up.

Also, in this embodiment, when attempting to set the re-engaging arm 25.28 to the disengaged position with the locking pin 30 for the manual chill door knob, first shift the shift rod 17 to the neutral or forward shift position. By setting the
After setting the engagement arm 25 to the non-engagement position, as will be described in detail later, the operating lever 22 is rotated counterclockwise as shown in FIG.
3 to the second engagement arm 28, the second engagement arm 28 is set and held at the non-engagement position with the locking pin 30.

A curved guide portion 45 is recessed in the clamp bracket 12, and a shallow water engagement step portion 46 and an intermediate engagement step portion are provided on the front inner surface of the clamp bracket 12 at appropriate intervals along the guide portion 45. 46A and a tilt-up engaging step portion 47 are provided. In addition, the swivel bracket 12
A support arm 49 is rotatably supported via the aforementioned support shafts 21A and 21B. The support arm 49 is capable of engaging its distal end engagement portion 50 with each of the engagement step portions 46, 46A, 47. A spring 52 interposed between the pin 51 provided at the intermediate portion of the support arm 49 and the swing arm 24 described above is connected to the pin 51 .

Here, the support arm 49 is attached to the engaging steps 46, 46A, 47.
In the state where the disengagement mode is set with the spring 52, the connecting line connecting both ends of the spring 52 is set on the opposite engagement step side of the support shafts 21A and 21B (support arm rotation center), which is the dead center, The distal end engaging portion 50 of the support arm 49 is connected to the engaging stepped portion 4 by spring force.
6. 46A and 47 are separated to the non-engaging position.

On the other hand, when the support arm 49 is set in the engagement mode with the engagement step portions 46.46A, 47, the engagement step of the support shafts 21A, 21B where the connecting line connecting both ends of the spring 52 is the dead center. It is set on the department side. Therefore, in this state, when the propulsion unit 14 is tilted upward from the tilt-down position, the tip engaging portion 50 of the support arm 49 moves upward along the front inner surface of the guide portion 45 while being pressed by the spring force. In the course of the movement, it sequentially engages with the shallow water engagement step portion 46, the intermediate engagement step portion 46A, and the tilt-up engagement step portion 47. When the distal end engaging portion 50 of the support arm 49 engages with the shallow water engagement step portion 46, it becomes a shallow water lock, and when the distal end engaging portion 50 engages with the tilt up engagement step portion 47, it becomes a tilt up lock. (See Figure 5).

According to the first embodiment, there are the following effects (1) to (2).

■When equipped with a tilt lock device and a tilt holding device, the support shafts 2LA and 2 of the intermediate arm 23 of the tilt lock device
1B and the support shaft 21A of the support arm 49 of the tilt holding device.
, 21B are coaxially arranged on the swivel bracket 15. Therefore, the layout of these components in the swivel bracket 15 can be simplified, and the ease of processing and assembly at the manufacturing stage and the ease of maintenance work at the stage of use can be improved.

- By operating the single operating lever 22, the spring 52 moves beyond the dead center of the support shafts 21A and 21B, so the engagement arm 25.
28 and the support arm 49 can be swung toward the guide portion 45 side. At this time, the end of the interlocking link 33 on the intermediate arm 23 side engages with the support shaft 21A by the toggle mechanism.

Then, if the propulsion unit 14 is tilted up in this state, the support arm 49 is sequentially moved to the engaging step portion 46.46A.
, 47 can be engaged and held.

■ After displacing the operating lever 22 to the opposite side (see Fig. 5) while holding the tilt up, the propulsion unit 14
, the support arm 49 swings away from the guide portion 45 and the second engagement arm 28 or the locking pin 3
0 to the engagement position side. When the propulsion unit 14 tilts down due to its own weight, the second engagement arm 28 engages the locking pin 3.
0, rotates upward, and then engages with the locking pin 30. At this time, from the tip hook part of the interlocking link 33 to the pin 2
7 does not come off and no force acts on the interlocking link 33 from the pin 27, so the support arm 49 maintains its rearward bias.

■In the event of a collision with driftwood, the second engagement arm 28
Even if it rotates to the unlocked position, the interlocking link 33 will not be driven from the bin 27 side. Support arm 49
remains biased by the spring 52 toward the opposite side of the guide portion 45, and does not engage with the engagement step portions 46, 46A, 47 during tilt down after flipping up and tilting up.

■The swing angle of the support arm 45 changes depending on the tilt-up angle, or the support arm 49 is made rotatable relative to the operating lever 22 or the fixed support shaft 21A, so that the operating rotation angle of the operating lever 22 is changed. , can be made constant depending on the operating range of the link system of the second engagement arm 28.

Second Embodiment (See FIGS. 6 and 7) The second embodiment is the same as the first embodiment except for the following points (1) to (2).

■At the front of the swivel bracket 15, tilt axis 1
3, the support arm operating lever 61 is rotatable around 3,
An engagement arm operating lever 62 is arranged.

(2) The intermediate arm 23 is not fixedly supported but rotatably supported on the support shaft 21A, and the engagement arm operating lever 62 and the intermediate arm 23 are connected by a link 63.

(2) The swing arm 24 and the support arm operating lever 61 are connected by a link 64.

■Support arm operating lever 61 and engagement arm operating lever 6
2 can be linked as shown in ■ and ■ below.

■When pushing down the engagement arm operation lever 62 to the disengagement side of the second engagement arm 28, the protrusion 62A of the engagement arm operation lever 62 also pushes down the protrusion 61A of the support arm operation lever 61, resulting in the support arm 49 being pushed down. At the same time, it is swung toward the guide portion 45.

■When the second engagement arm 28 is in the disengagement position in the tilt-up holding state, when the support arm operation lever 61 is pulled upward to swing the support arm 49 to the opposite side of the guide part 45, the support Protrusion 61 of arm operation lever 61
At A, the projection 82A of the engagement arm operation L/bar 62 is also pushed up, and as a result, the second engagement arm 28 is simultaneously set to the engageable position.

According to the second embodiment, the operation of the support arm 49 and the second engagement arm 28 can be performed both on the side of the swivel bracket 15 (by the operation lever 22) and on the front of the swivel bracket 15 (by the support arm operation lever 61). (by means of the engagement arm operating lever 62).

Third Embodiment (See FIG. 8) The third embodiment is the same as the second embodiment except for (1) below.

(1) The support arm operating lever 61 was abolished, resulting in a simplified configuration and cost reduction.

(2) first rotating plate 80, second rotating plate 81,
The coil member 82, the spring 29, and the interlocking rod 31 are eliminated, and the first engagement arm 25 and the second engagement arm 28 are made rotatable with respect to each other via the pin 27, and the second
When the engagement arm 28 rotates counterclockwise, the stopper 2
5A, and rotated together with the first engagement arm 25. As a result, regardless of the shift state, the re-engaging arm 25.28 can be operated by the engaging arm operating lever 62.
can be set to a non-engaging position with the engaging pin 30.

Fourth Embodiment (Refer to FIGS. 9(A) and (B)) The fourth embodiment includes (1) (2) below and (3) in the description of the third embodiment.
) The points other than those in the first embodiment are the same as in the first embodiment.

(1) The support shafts 21A and 21B were integrated to form the support shaft 21.

(2) The swinging arm 24 was fixed to the support shaft 21, and the swinging arm 24 and the spring 52 were connected by a rigid link 71. At this time, the shape of the link 71 is selected, and when the spring 52 connected to the link 71 exceeds the dead center, the link 71
It was made so that it would not interfere with the support shaft 21.

Fifth Embodiment (See FIG. 10) The fifth embodiment is the same as the third embodiment except for the following (11, (2)).

(1) The support shafts 21A and 21B were integrated to form the support glaze 21.

(2) The swinging arm 24 was fixed to the support shaft 21, and the swinging arm 24 and the spring 52 were connected by a rigid link 81. At this time, the shape of the link 81 is selected, and when the spring 52 connected to the link 81 exceeds the dead center, the link 81
The support shaft 21 was prevented from interfering with the supporting shaft 21.

[Effects of the Invention] As described above, according to the present invention, when equipped with a tilt lock device and a tilt holding device, the layout of these components in a swivel bracket is simplified, and processing and assembly at the manufacturing stage and use stage are improved. Improves maintenance workability.

[Brief explanation of drawings]

Fig. 1 is a side view showing the outboard motor, Fig. 2 is a schematic diagram showing the tilt-down lock state in the first embodiment, Fig. 3 is a sectional view taken along the line ■-■ in Fig. 2, and Fig. 4 is a schematic diagram showing the tilt-down lock release state, FIG. 5 is a schematic diagram showing the tilt-up holding state, FIG. 6 is a schematic diagram showing the second embodiment, and FIG. 7 is a schematic diagram showing the shallow water holding state. FIG. 8 is a schematic diagram showing the third embodiment, FIGS. 9(A) and (B) are schematic diagrams showing the fourth embodiment, and FIG. 10 is a schematic diagram showing the fifth embodiment. DESCRIPTION OF SYMBOLS 10... Outboard motor, 11... Hull, 12... Clamp bracket, 13... Tilt axis, 14... Propulsion unit, 15... Swivel bracket, 21A, 21B, 21-- - Support shaft, 22... Operation lever 23... Intermediate arm, 25.28... Engagement arm, 30... Locking pin, 46.46A, 47... Engagement stepped portion, 49. ...Support arm.

Claims (1)

[Claims] (1) A clamp bracket fixed to the hull, a propulsion unit supported by a swivel bracket attached to the clamp bracket so that it can rotate up and down via a tilt axis, and the propulsion unit rotates upward around the tilt axis. In an outboard motor tilt device, the tilt lock device includes a tilt lock device that prevents the propulsion unit from rotating upwardly around the tilt axis, and a tilt holding device that holds the propulsion unit in an upwardly rotated state around the tilt axis. and an engagement arm that locks the propulsion unit from rotating upward by being engageable with a locking member of the clamp bracket, and a swivel bracket that is rotatably supported. and an intermediate arm that is connected to the engagement arm and rotates under the action of an operating force to drive the engagement arm, and the tilt holding device is rotatably supported by the swivel bracket. In addition, the support arm is engageable with the holding part of the clamp bracket and supports the propulsion unit so that it does not fall from the upwardly rotated state. A tilt device for an outboard motor, characterized in that a pivot axis of a support arm of a holding device is set on the same axis.