JPS63103794A - Tilt device for ship propeller - Google Patents

Abstract

PURPOSE:To easily operate an engaging arm from the inside of a hull by providing an operating member which is connected to said engaging arm for shoal locking and tilt-up locking, on the upper front face of a swivel bracket. CONSTITUTION:An operating lever 51 which is connected to an engaging arm 49 is provided on a tilt shaft 13 which is the upper front face of a swivel bracket 15. And, by operating this operating lever 51 from the inside of a hull, the engaging arm 49 is operated via a swinging arm 52 and, accompanying the tilting of a propelling unit 14 from its tilt-down position to tilt-up side, the engaging part 50 on the end of the engaging arm 49 is automatically engaged with a downside engaging stage part 46 for a shoal, a middle engaging stage part 46A, and an upside engaging stage part 47 for tilt-up, in order.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a tilt device for a marine vessel propulsion device.

[Prior Art] Conventionally, a tilt device for a marine vessel propulsion device has been proposed as described in Japanese Utility Model Publication No. 45-33775. This tilt device consists of a clamp bracket that is fixed to the hull, a swivel bracket that is rotatably attached to the clamp bracket via a tilt axis in the tilt-up or tilt-down direction and supports the propulsion unit, and a front inner surface of the clamp bracket. a plurality of engagement steps provided at appropriate intervals, an engagement arm rotatably supported by a swivel bracket and whose distal end engagement portion can be engaged with the engagement steps; and a resilient member that presses the clamp bracket against the front inner surface of the clamp bracket.

That is, according to the above-mentioned tilt device, when the propulsion unit is tilted upward from the tilt-down position, the engagement arm that is resiliently pushed by the resilient member sequentially moves from the lower engagement stage to the upper engagement stage. It will engage with the section. Therefore, when it is desired to reduce the effective depth of the propulsion propeller during shallow water cruising, etc., the propulsion unit is locked in the shallow water cruising position (hereinafter referred to as In addition, during high-speed sailing, storage at sea, etc., by engaging the engagement arm with the upper engagement step.

The propulsion unit can be locked in a tilt-up position (hereinafter referred to as tilt-up lock).

[Problems to be Solved by the Invention] However, with the above-mentioned conventional tilt device, when releasing the shallow water lock or tilt-up lock, the operator leans out from inside the vessel and touches the front inner surface of the clamp bracket. A hand must be reached to disengage the engagement arm and the engagement step.

This disengagement operation is complicated and lacks speed.

SUMMARY OF THE INVENTION An object of the present invention is to enable an engagement arm for a shallow water lock and a tilt-up lock to be easily operated from within the hull.

[Means for Solving the Problems] A tilt device for a marine propulsion device according to the present invention includes a clamp bracket fixed to the hull, and a clamp bracket that is rotatable in a tilt-up or tilt-down direction via a tilt shaft. A swivel bracket is attached and supports the propulsion unit, a plurality of engagement steps are provided at appropriate intervals on the front inner surface of the clamp bracket, and the tip engagement part is rotatably supported by the swivel bracket and engaged. The device includes an engagement arm that can engage with the stepped portion, and an operator that is disposed on the upper front surface of the swivel bracket and connected to the engagement arm.

[Function] According to the present invention, shallow water lock and tilt up row,
Since the operator connected to the engagement arm for the swivel bracket is disposed on the upper front surface of the swivel bracket, the operator can be easily operated from within the hull. can.

Furthermore, if a resilient member is provided that presses the engaging arm against the engaging stepped portion, as the propulsion unit is tilted from the tilt-down position to the up side, the engaging arm is resiliently pushed by the resilient member. It is possible to obtain an engagement mode in which the lower engagement step portion is automatically engaged with the upper engagement step portion in sequence.

The device also includes a swinging arm that is swung by an operator, one end of the springing member is connected to the swinging arm, the other end of the springing member is connected to an engagement arm, and both ends of the springing member are tied together. If the connecting line can be switched and set to either the engagement step side or the opposite engagement step side with respect to the center of rotation of the engagement arm, the engagement mode in which the engagement arm is pressed against the engagement step portion In addition, a disengagement mode in which the engagement arm separates from the engagement step can also be obtained.

In addition, if the clamp bracket is provided with an elastic body that collides with the engagement arm when it is tilted up, the clamp bracket can absorb the impact force, such as the springing load of the propulsion unit when it collides with driftwood. ,
An over-first stop can be performed by the engaging arm without increasing the size of the engaging arm.

[Example] Fig. 1 is a schematic diagram of main parts showing a tilt down lock state in an embodiment of the present invention, Fig. 2 is a front view of Fig. 1, and Fig. 3 is a front view of Fig. 1.
The figure is a view taken along the line m--■ in FIG. 1, and FIG. 4 is a schematic diagram of the main parts showing the tilt-up lock state.

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

A shift lever 20 is provided on the upper side of the propulsion unit 14 and is swingable between three positions: a forward position, a neutral position, and a reverse position. The upper end of a shift rod 22 is pin-coupled 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 has a forward cam surface, a neutral cam surface, and a reverse cam surface corresponding to the swinging position of the shift lever 20, and is integrated with the propeller shaft 18 in the rotational direction, and includes a dog clutch 24 that constitutes the forward/reverse switching device 17. can be moved to three positions: a forward position, a neutral position, and a reverse position. In its forward position, the dog clutch 24 selectively engages with the forward gear 26, which is always engaged with the drive gear 25, to rotate the propeller 19 forward, and in its backward position, it is always engaged with the drive gear 25. The propeller 1 selectively meshes with the reverse gear 27.
9 can be rotated backwards.

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

A first tilt lock arm 29 and an intermediate arm 30 are rotatably supported on the swivel bracket 15 via a support shaft 31. The first tilt lock arm 29 includes a claw portion 32 that engages with the lock pin 28. The first tilt lock arm 29 and the intermediate arm 30 each have a substantially U-shape as shown in FIG.
A portion of the upper surface of the intermediate arm 30 abuts a portion of the lower surface of the intermediate arm 30 . A spring 33 is interposed between the first tilt lock arm 29 and the swivel bracket 15 and urges the claw portion 32 of the first tilt lock arm 29 toward the lock pin 28 . A spring 34 is interposed to cause the intermediate arm 30 to abut against the first tilt lock arm 29 and to apply rotational force to the first tilt lock arm 29. The spring force of the spring 34 is set 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 2z located below the swivel bracket 15.
The distal end hook portion 36 of is engaged with the intermediate arm 30.

That is, during forward shifting, the shift rod 22 and the interlocking rod 35 are above the position shown in FIG. 1, and the intermediate arm 30 is rotated clockwise from the position shown in FIG. The claw portion 32 of the first tilt lock arm 29 with which the arm 30 abuts is set to a non-engaging position with the lock pin 28. When shifting backwards,
Since the shift rod 22 and the interlocking rod 35 are in the position shown in FIG. 1, and the intermediate arm 30 is set in the position shown in FIG.
The spring force of the locking pin 28 sets the propulsion unit 14 in a fixed tilt-down position.

A second tilt lock arm 37 is also supported by a rotating portion on the support shaft 31 of the swivel bracket 15. The second tilt lock arm 37 is provided with a claw portion 38 that engages with the lock bin 28 , and has a claw portion 38 between the second tilt lock arm 37 and the swivel bracket 15 .
A spring 39 is interposed to bias the lock pin 28 toward the lock pin 28. That is, the second tilt lock arm 37 is provided independently of the first tilt lock arm 29, and the spring 3
The spring force of 9 engages the pawl 38 with the lock pin 28 to hold the propulsion unit 14 in a constant tilt-down position. Here, the second tilt lock arm 37 transfers the disengagement load with the lock bin 28 to the first tilt lock arm 29.
is set smaller than that in .

Therefore, in this embodiment, when moving backward, the first
Since the tilt lock arm 29 engages with the lock bin 28, the propulsion unit 14 can be reliably locked in reverse against reverse thrust. On the other hand, when moving forward, the engagement between the first tilt lock arm 29 and the lock bin 28 is released, but the second tilt lock arm 37 engages with the lock bin 28.
8, the propulsion unit 14 is engaged with the coasting leg.
can be locked and prevented from rising. Here, the second
The tilt lock arm 37 is the first tilt lock arm 29
Since the disengagement load is set to be smaller than that of the second tilt row and the farm 37, the second tilt row and the farm 37 can easily disengage from the lock bin 2B without causing severe wear against the driftwood collision, and the propulsion unit , ) 14 can 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. The intermediate lever 42 is connected to an operating lever 44 rotatably supported by the tilt shaft 13 via a connecting rod 43. That is, when attempting to set the second tilt lock arm 37 to a non-engaging position with the lock bin 28 for manual tilt-up, the second tilt lock arm 37 can be rotated by the operation lever 44. .

Therefore, 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. A portion 46A and an engaging step portion 47 for the chill door and puller are provided. Further, an engagement arm 49 is rotatably supported by the swivel bracket 15 via a support shaft 48 . The engagement arm 49 has its distal end engagement portion 5
0 can be engaged with each of the engagement step portions 46, 46A, 47.

An operating lever 51 connected to the engagement arm 49 is disposed on the upper front surface of the swivel bracket 15, that is, on the tilt shaft 13. That is, the operating lever 51 is connected via a connecting rod 53 to a swinging arm 52 that is swingably supported by the support shaft 48, and is connected to the connecting portion 5 of the swinging arm 52.
Each end of the spring 54 is connected to each of the connecting portions 2A and 49A of the engagement arm 49.

Here, the engagement arm 49 is attached to the engagement steps 46, 46A, 47.
In the state where the disengagement mode is set with The tip engaging portion 50 is separated from the engaging step portions 46, 46A, 47 by spring force to a non-engaging position.

On the other hand, when the engagement arm 49 is set in the engagement mode with the engagement steps 46, 46A, 47, the connecting line connecting both ends of the spring 54 is set on the engagement step side of the support shaft 48. Ru. Therefore, under this condition, when the propulsion unit 14 is tilted upward from the tilt-down position, the engagement arm 49
The tip engaging portion 50 moves upward along the front inner surface of the guide portion 45 while being pressed by a spring force, and in the process of movement, the shallow water engaging step portion 46, the intermediate engaging step portion 46A, and the tilt It engages with the engagement step portion 47 for up. When the distal end engagement portion 50 of the engagement arm 49 engages with the shallow water engagement step portion 46, a shallow water lock is established, and when the distal end engagement portion 50 engages with the tilt up engagement step portion 47, the chill door and block are locked. (Figure 4).

Further, at the top of the guide section 45 provided on the clamp bracket 12, a distal end engagement section 50 of the engagement arm 49 is provided.
An elastic body 55 made of rubber or the like is disposed to abut against each other in the most tilted up state.

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

According to the above embodiment, the operating lever 5 is connected to the engagement arm 49 for shallow water locking and tilt-up locking.
1 is disposed on the front surface of the L-man of the swivel bracket 15, the operating lever 51 can be easily operated from within the hull.

Moreover, since the spring 54 is provided to press the engagement arm 49 against the engagement step 46.47, as the propulsion unit 14 is tilted from the tilt-down position to the up side, the spring 54
An engagement mode can be obtained in which the engagement arm 49, which is being pushed forward, is automatically engaged sequentially from the lower engagement step 46 to the upper engagement step 47.

Also, a swing arm 5 that swings by an operating lever 51
2, one end of the spring 54 is connected to the swinging arm 52,
The other end of the spring 54 is connected to the engagement arm 49, and the connection line connecting both ends of the spring 54 is connected to the support shaft 48 (center of rotation of the engagement arm).
In addition to the engagement mode in which the engagement arm 49 is pressed against the engagement step 46, 47, A disengaged mode in which the engagement arm 49 moves away from the engagement step 46.47 can also be obtained.

In addition, since the clamp bracket 12 is provided with the elastic body 55 that collides with the engagement arm 49 in the tilted-up state, the impact force such as the springing load of the propulsion unit 14 at the time of hot water collision can be alleviated and received by the clamp bracket 12. Therefore, the overtilt stop can be performed by the engaging arm 49 without increasing the size of the engaging arm 49.

[Effects of the Invention] As described above, according to the present invention, the operator connected to the engagement arm for the shallow water lock and the tilt-up lock is disposed on the upper front surface of the swivel bracket. Easily operated from within the hull, thereby allowing the engagement arm to be easily operated from within the hull.

[Brief explanation of the drawing]

FIG. 1 shows a tilt down row 2 in an embodiment of the present invention.
Fig. 2 is a front view of Fig. 1, Fig. 3 is a view taken along the line ■-■ in Fig. 1, and Fig. 4 is a schematic diagram of main parts showing the tilt-up lock state. It is a schematic diagram. 10゛... Outboard motor, 11... Hull, 12... Clamp bracket, 13 River tilt shaft, 14... Propulsion unit, 15... Swivel bracket, 46... Engagement stage for shallow water Part, 47... Engagement step part for tilt up, 48
... Support shaft (center of rotation of engagement arm), 49... Engagement arm, 51... Operation lever (operator), 52... Swinging arm, 54... Spring (resilient member) ), 55...elastic body. Agent Patent Attorney Osamu Shiokawa 2 Figure 3

Claims (4)

[Claims] (1) A clamp bracket that is fixed to the hull, a swivel bracket that is rotatably attached to the clamp bracket via a tilt axis in the tilt-up or tilt-down direction and supports the propulsion unit, and a swivel bracket that is attached to the front inner surface of the clamp bracket as appropriate. a plurality of engagement steps provided at intervals, an engagement arm rotatably supported by the swivel bracket and whose tip engagement portion can be engaged with the engagement steps, and an upper front surface of the swivel bracket. 1. A tilting device for a marine propulsion device, comprising an operator disposed in the holder and connected to an engagement arm. (2) A tilting device for a marine vessel propulsion device according to claim 1, which is provided with a resilient member that presses the engagement arm against the engagement step. (3) In claim 2, a swinging arm is provided that is swung by an operator, one end of the springing member is connected to a connecting portion of the swinging arm, and the other end of the springing member is engaged. When the elastic member is connected to the connecting portion of the arm and the engaging arm is set to the non-engaging mode with the engaging stepped portion, the connecting line connecting both ends of the resilient member is connected to the center of rotation of the engaging arm. [2] When the engagement arm is set to the engagement mode with the engagement step, the connecting line connecting both ends of the resilient member is the center of rotation of the engagement arm. A tilt device for a marine propulsion device that is installed on the side of the engagement step. (4) A tilting device for a marine vessel propulsion device according to claim 1, wherein the clamp bracket is provided with an elastic body that abuts against the engaging arm in a tilted-up state.