JPH0676079B2 - Tilt device for ship propulsion - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tilting device for a ship propulsion device.

[Prior Art] Conventionally, a tilt device for a boat propulsion device described in Japanese Utility Model Publication No. 45-33775 has been proposed. This tilting device includes a clamp bracket fixed to the hull, a swivel bracket that is rotatably attached to the clamp bracket in a tilt-up or tilt-down direction via a tilt shaft, and supports a propulsion unit, and a front inner surface of the clamp bracket. A plurality of engaging step portions provided at appropriate intervals, an engaging arm rotatably supported by the swivel bracket, and a distal end engaging portion thereof engageable with the engaging step portion; And an elastic member that presses against the front inner surface of the clamp bracket.

That is, according to the above-described tilting device, when the propulsion unit is tilted from the tilt-down position to the up side, the engagement arms elastically ejected by the elastic member are sequentially moved from the lower engagement step portion to the upper engagement step. Will engage the part. Therefore, when you want to make the effective depth of the propulsion propeller shallow when traveling in shallow water, lock the propulsion unit in the shallow running position by engaging the engagement arm with the lower engagement step (hereinafter, You can lock in shallow water). Further, during high-speed cruising, storage on the sea, etc., the propulsion unit can be locked in the tilt-up position (hereinafter, tilt-up lock) by engaging the engagement arm with the upper engagement step. .

[Problems to be Solved by the Invention] However, in the above-described conventional tilting device, when the shallow lock and the tilt-up lock are released, the operator leans out from the inside of the boat and touches the front inner surface of the clamp bracket. Must be extended to disengage the engagement arm and the engagement step. This engagement pin release operation is complicated and lacks speed.

The present invention makes it possible to easily operate the engagement arm for locking the propulsion unit in the shallow water and the tilt-up lock from the inside of the hull, and to secure the strength of the engagement arm to stably lock the propulsion unit. To aim.

[Means for Solving the Problems] The present invention relates to a clamp bracket fixed to a hull, and a swivel rotatably attached to the clamp bracket in a tilt-up or tilt-down direction via a tilt shaft to support a propulsion unit. The bracket, a plurality of engaging step portions provided at appropriate intervals on the front inner surface of the clamp bracket, and rotatably supported by the swivel bracket,
A tilt device for a marine propulsion device, comprising: an engagement arm that is engageable with an engagement step portion; and a manipulator that is disposed on an upper front surface of a swivel bracket and that is connected to the engagement arm. The engaging arm is a substantially flat plate that extends left and right, and has engaging pins that project to the left and right at lower portions on both sides of the substantially flat plate so that the engaging pin can be engaged with the engaging step portion. It was done.

[Operation] According to the present invention, since the operator connected to the engaging arm for the shallow lock and the tilt-up lock is arranged on the upper front surface of the swivel bracket, the operator can easily operate the operator from the inside of the hull. As a result, the engagement arm can be easily operated from the inside of the hull.

However, the side thrust due to running acts on the propulsion unit during shallow water cruising. At this time, since the engaging arm "forms a substantially flat plate extending left and right, is supported by the swivel bracket and is engaged with the engaging step portion of the clamp bracket", the cross-section coefficient for the side slit increases. , It doesn't seem to bend. That is, it is possible to secure the strength of the engagement arm and stably lock the propulsion unit.

Further, if an elastic member for pressing the engaging arm to the engaging step portion is provided, the engaging arm elastically ejected by the elastic member as the propulsion unit is tilted from the tilt down position to the up side. It is possible to obtain the engagement mode in which the lower engagement step is automatically engaged sequentially with the upper engagement step.

In addition, a swing arm swingable by an operator is provided, one end of the elastic member is connected to the swing arm, the other end of the elastic member is connected to the engagement arm, and both ends of the elastic member are connected. If the connection line can be set to be switched between the engagement step portion side and the anti-engagement step portion side with respect to the rotation center of the engagement arm, the engagement mode in which the engagement arm is pressed by the engagement step portion In addition, a non-engagement mode in which the engagement arm separates from the engagement step can be obtained.

Further, if the clamp bracket is provided with an elastic body that abuts the engaging arm in the tilted-up state, the clamp bracket can receive the impact force such as the jumping load of the propulsion unit at the time of collision of the driftwood. ,
The over-tilt stop can be performed by the engaging arm without making the engaging arm water-type.

[Embodiment] FIG. 1 is a schematic view of a main part showing a tilt-down lock state in an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and FIG.
The drawing is a view taken along the line III-III in FIG. 1, and FIG. 4 is a schematic view of a main part showing a tilt-up lock state.

The outboard motor 10 includes a clamp bracket 12 fixed to the hull 11.
And a swivel bracket 15 for supporting the propulsion unit 14, which is rotatably attached to the clamp bracket 12 through a tilt shaft 13 in a tilt-up or tilt-down direction. The propulsion unit 14 is equipped with an engine (not shown), and the output of the engine is transmitted to the propeller 19 via the drive shaft 16, the forward / reverse switching device 17, and the propeller shaft 18.

On the upper side of the propulsion unit 14, a shift lever 20 is swingable between three positions of a forward drive position, a neutral position and a reverse drive position. An upper end portion of a shift rod 22 is pin-connected to the shift lever 20 via a shift arm 21. A shift cam 23 is fixed to the lower end of the shift rod 22. The shift cam 23 includes a forward cam surface, a neutral cam surface, and a reverse cam surface corresponding to the swing position of the shift lever 20, and is integrated with the propeller shaft 18 in the rotational direction to constitute a dog clutch 24 that constitutes the forward / reverse switching device 17. Can be moved to three positions of a forward drive position, a neutral position and a reverse drive position. In the forward drive position, the dog clutch 24 selectively engages with the forward drive gear 26 that always engages with the drive gear 25 to rotate the propeller 19 forward, and in the reverse drive position,
The propeller 19 can be rotated in reverse by selectively meshing with a reverse gear 27 that is always meshed with the drive gear 25.

A lock pin 28 is provided at the bottom of the clamp bracket 12.

The swivel bracket 15 has a first tilt lock arm 2
9. The intermediate arm 30 is rotatably supported via the support shaft 31. The first tilt lock arm 29 includes a claw portion 32 that engages with the lock pin 28. First tilt lock arm
As shown in FIG. 3, each of 29 and the intermediate arm 30 has a substantially U shape, and a part of the lower surface of the first tilt lock arm 29 abuts a part of the upper surface of the intermediate arm 30. Between the first tilt lock arm 29 and the swivel bracket 15, a spring 33 for biasing the claw portion 32 of the first tilt lock arm 29 toward the lock pin 28 is interposed, and between the intermediate arm 30 and the swivel bracket 15. A spring 34 for interposing the intermediate arm 30 against the first tilt lock arm 29 and imparting a turning force to the first tilt lock arm 29 is interposed in this. The spring force of the spring 34 is set to be larger than the spring force of the spring 33. On the other hand, an interlocking rod 35 is coupled to a portion of the shift rod 22 located below the swivel bracket 15, and a tip hook portion 36 of the interlocking rod 35 is engaged with the intermediate arm 30.

That is, during the forward shift, the shift rod 22 and the interlocking rod 35 are located above the position shown in FIG.
Since 30 is rotated in the clockwise direction from the position shown in FIG. 1 by the spring force of the spring 34, the claw portion 32 of the first tilt lock arm 29 with which the intermediate arm 30 abuts is in the non-engaging position with the lock pin 28. Is set to. During the reverse shift, the shift rod 22 and the interlocking rod 35 are in the positions shown in FIG.
Is set to the position shown in FIG. 1, the claw portion 32 of the first tilt lock arm 29 is set to the engagement position with the lock pin 28 by the spring force of the spring 33, and the propulsion unit 14 is set to a constant tilt down position. Hold on.

A second tilt lock arm 37 is also rotatably supported on the support shaft 31 of the swivel bracket 15. The second tilt lock arm 37 includes a claw portion 38 that engages with the lock pin 28,
A spring 39 for urging the claw portion 38 toward the lock pin 28 is interposed between the swivel bracket 15 and the swivel bracket 15. That is, the second
The tilt lock arm 37 is provided independently of the first tilt lock arm 29, and the claw portion 38 is engaged with the lock pin 28 by the spring force of the spring 39 to hold the propulsion unit 14 at a certain tilt down position. Here, the second tilt lock arm
37, the engagement release load with the lock pin 28 is set smaller than that in the first tilt lock arm 29.

Therefore, in this embodiment, when the vehicle is moving backward, the first
Since the tilt lock arm 29 engages with the lock pin 28,
It is possible to reliably lock the propulsion unit 14 in reverse with respect to reverse thrust. On the other hand, at the time of forward movement, the engagement between the first tilt lock arm 29 and the lock pin 28 is released,
Since the second tilt lock arm 37 engages with the lock pin 28, the propulsion unit 14 can be locked against the coasting foot and its lifting can be prevented. Here, the second tilt lock arm 37 is set to have a smaller disengagement load than that of the first tilt lock arm 29, so that the second tilt lock arm 37 acts on the lock pin 28 against the driftwood collision. The engagement can be easily disengaged without causing significant wear in the meantime, and the propulsion unit 14 can also be flipped up.

An intermediate lever 42 rotatably provided on the swivel bracket 15 is connected to the connecting portion 40 of the second tilt lock arm 37 via a connecting rod 41. An operation lever 44, which is rotatably supported by the tilt shaft 13, is connected to the intermediate lever 42 via a connecting rod 43. That is, in order to set the second tilt lock arm 37 to the non-engagement position with the lock pin 28 for manual tilt-up, the second tilt lock arm 37 can be rotated by the operation lever 44. it can.

Then, the clamp bracket 12 has a curved guide portion.
45 is recessed, and on the front inner surface of the clamp bracket 12,
A shallow water engaging step portion 46, an intermediate engaging step portion 46A, and a tilt-up engaging step portion 47 are provided at appropriate intervals along the guide portion 45. An engagement arm 49 is rotatably supported on the swivel bracket 15 via a support shaft 48. The engaging arm 49 is a substantially flat plate extending left and right, and has engaging pins 50 protruding left and right at lower portions on both sides of the substantially flat plate. 46A and 47 can be engaged.

The upper front surface of the swivel bracket 15, that is, the tilt shaft 13
An operating lever 51 connected to the engaging arm 49 is provided in the. That is, the operation lever 51 is coupled to the swing arm 52, which is swingably supported by the support shaft 48, via the connecting rod 53, and the connecting portion 52A of the swing arm 52 and the connecting portion 49A of the engaging arm 49 are connected. Each end of the spring 54 is connected to each of the above.

Here, under the condition that the engagement arm 49 is set in the non-engagement mode with the engagement step portions 46, 46A, 47, the connecting line connecting both ends of the spring 54 is the support shaft 48 (the engagement arm rotation center). ), The engagement pin 50 of the engagement arm 49 is separated by a spring force into a non-engagement position with the engagement steps 46, 46A, 47.

On the other hand, under the condition that the engagement arm 49 is set in the engagement mode with the engagement step portions 46, 46A, 47, the connecting line connecting both ends of the spring 54 is set on the engagement step portion side of the support shaft 48. It Therefore, in this state, when the propulsion unit 14 is tilted from the tilt-down position to the up side, the engagement pin 50 of the engagement arm 49 moves upward along the front inner surface of the guide portion 45 while being pressed by the spring force. And the engaging step portion 46 for shallow water in the movement process,
The intermediate engagement step portion 46A and the tilt-up engagement step portion 47 are engaged. When the engaging pin 50 of the engaging arm 49 engages with the shallow engaging step 46, the shallow lock occurs, and when the engaging pin 50 engages the tilt up engaging step 47, the tilt up lock occurs. (Fig. 4).

Further, the guide portion provided on the clamp bracket 12
At the uppermost portion of 45, an elastic body 55 such as rubber is provided that abuts the engagement pin 50 of the engagement arm 49 in the most tilted state.

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

According to the above-described embodiment, since the operation lever 51 connected to the engaging arm 49 for the shallow lock and the tilt-up lock is arranged on the upper front surface of the swivel bracket 15, the operation lever 51 can be easily moved from the inside of the hull. Can be operated.

However, in shallow water traveling and the like, the side thrust due to traveling acts on the propulsion unit 14. At this time, the engaging arm 49 is “a substantially flat plate extending leftward and rightward, and is supported by the swivel bracket 15 as well as the clamp bracket.
Since it is engaged with the twelve engaging step portions 46 and 47, "the section modulus with respect to the side thrust increases and there is no possibility of bending.
That is, the strength of the engaging arm 49 is ensured and the propulsion unit is secured.
14 can be locked stably.

In addition, the spring 54 that presses the engagement arm 49 against the engagement steps 46 and 47.
Since the propulsion unit 14 is tilted from the tilt-down position to the up side, the engaging arms 49 elastically springed by the spring 54 are sequentially arranged from the lower engaging step portion 46 to the upper engaging step portion 47. It is possible to obtain an engagement mode for automatically engaging with.

Further, a swing arm 52 swingable by the operation lever 51 is provided, one end of the spring 54 is connected to the swing arm 52, the other end of the spring 54 is connected to the engagement arm 49, and both ends of the spring 54 are connected. Since the connecting line to be connected can be set to be switched between the engagement step portion side and the anti-engagement step portion side with respect to the support shaft 48 (engagement arm rotation center), the engagement arm 49 has the engagement step portion 46. In addition to the engagement mode in which the engagement arms 49 are pressed by the engagement step portions 46, 47
A disengagement mode away from can also be obtained.

Further, since the clamp bracket 12 is provided with the elastic body 55 which the engaging arm 49 abuts in the tilted-up state, the clamp bracket 12 absorbs an impact force such as a jumping load of the propulsion unit 14 at the time of a collision of driftwood. The engaging arm 49 can be formed without increasing the size of the engaging arm 49.
The overtilt stop can be performed by.

[Effects of the Invention] As described above, according to the present invention, the engagement arm for locking the propulsion unit in shallow water and tilting up can be easily operated from the inside of the hull, and the strength of the engagement arm is secured. The propulsion unit can be locked stably.

[Brief description of drawings]

FIG. 1 is a schematic view of an essential part showing a tilt-down lock state in one embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and a third view.
The drawing is a view taken along the line III-III in FIG. 1, and FIG. 4 is a schematic view of a main part showing a tilt-up lock state. 10 …… Outboard motor, 11 …… Hull, 12 …… Clamp bracket, 13 …… Tilt shaft, 14 …… Propulsion unit, 15 …… Swivel bracket, 46 …… Shallow engaging step, 47 …… Tilt Engaging stepped portion, 48 ... Support shaft (center of rotation of engaging arm), 49 ... Engaging arm, 50 ... Engaging pin, 51 ... Operating lever (operator), 52 ... Swing Arm, 54 ... Spring (elastic member), 55 ... Elastic body.

Claims (4)

[Claims] 1. A clamp bracket fixed to a hull,
A swivel bracket that is rotatably attached to a clamp bracket in a tilt-up or tilt-down direction via a tilt shaft and that supports a propulsion unit, and a plurality of engagement step portions that are provided on the front inner surface of the clamp bracket at appropriate intervals. An engaging arm that is rotatably supported by the swivel bracket and is engageable with the engaging step portion, and an operator that is disposed on the upper front surface of the swivel bracket and that is connected to the engaging arm. In the tilting device for a ship propulsion device, the engaging arm is a substantially flat plate extending left and right, and the engaging pin has left and right protruding pins at both lower sides of the substantially flat plate. A tilting device for a marine propulsion device, wherein the tilting device is engageable with a connecting portion. 2. A tilting device for a marine propulsion device according to claim 1, further comprising an elastic member for pressing the engagement arm against the engagement step. 3. A swing arm oscillated by an operator is supported by a swivel bracket according to claim 2, and one end of the elastic member is connected to a connecting portion of the swing arm to generate elastic force. The other end of the member is connected to the connecting portion of the engaging arm,
In a state in which the engagement arm is set in the non-engagement mode with the engagement step, the connecting line connecting both ends of the elastic member is set on the side opposite to the engagement arm rotation center, which is the engagement step. The engagement pin of the coupling arm can be separated to the non-engagement position with the engagement step portion by the spring force of the elastic member, and when the engagement arm is set to the engagement step engagement mode, The connecting line connecting both ends of the emitting member is set on the engagement step side of the center of rotation of the engagement arm, and the engagement pin of the engagement arm is engaged with the engagement step by the spring force of the elastic member. Tilt device for ship propulsion equipment that can be pushed to the side. 4. The tilting device for a marine vessel propulsion device according to claim 1, wherein an elastic body, with which the engaging arm abuts in a tilted up state, is disposed on the clamp bracket.