JPS62184997A - Tilt device for ship propeller - Google Patents

Abstract

PURPOSE:To prevent a shoal engaging part from becoming a shoal navigating condition against the will of an operator under a navigating condition with a tilt lock being released by providing a resilient body in between a supporting part provided on a swivel bracket and a connecting part provided on a tilt arm. CONSTITUTION:In an outboard motor 10, a clamp bracket 12 is fixed to a stern board 11 and a swivel bracket 14 is supported inclinedly movably on the bracket 12 via a tilt shaft 13. A tilt arm 30 is rotatably supported in the opening 15A of a supporting part 15 of a swivel bracket 14 via a supporting shaft A, and the arm 30 has a lock claw part 33 with which a lock pin 31 is engaged to hold a propelling unit 17 in a tilt down position. The direction of a turning force which acts on the arm 30 when a resilient body 35 in between a supporting part B and a connecting part C is positioned on one dead point, is made opposite to the direction of a turning force which acts on the arm 30 when the resilient body 35 is positioned on the other dead point.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tilt device for a marine vessel thruster such as an outboard motor.

[Prior Art] An outboard motor has a clamp bracket that is fixed to the hull, and a swivel bracket that is rotatably attached to the clamp bracket via a tilt axis in the tilt-up and tilt-down directions and supports a propulsion unit. are doing.

By the way, the conventional outboard motor shown in USP 3.578, 173 includes a lock pin provided on the clamp bracket and a lock pin rotatably supported by the swivel bracket to hold the propulsion unit in the tilt-down position. a locking arm that engages, and a shoal arm that is rotatably supported on a swivel bracket and engages a lock pin to hold the propulsion unit in a shoal cruising position; Some are equipped with a tilt device that allows the shallow water arm to be operated in conjunction with the shallow water arm.

[Problems to be Solved by the Invention] However, the above-mentioned conventional tilt device has two steps:
A first projectile body for setting the shallow water arm in a disengaged position with the lock pin, and ■ an operating lever that disengages the lock arm from the lock pin by resisting the resilient force of the first projectile body. A second projectile body is provided for setting the shoal arm into engagement with the lock pin when set in position.

Therefore 1. Follow the notes/A i-;+ ;In the device ^
Now, let's look at the two arms, the rock arm and the shallow water arm, and the two arms.
The structure is complicated as it is equipped with several types of projectiles. In addition, in the above conventional tilt device, when the operating lever does not set the lock arm to the non-engaging position with the lock pin,
Since the first projectile overcomes the projectile force of the second projectile to form the setting state (■) above, the projectile properties of both projectiles are always set in a specific relative relationship. Therefore, it is difficult to consistently ensure high operational reliability.

In addition, when using the above conventional tilt device, the lock arm must be locked so that the propulsion unit can freely move up and down to avoid interference with ropes floating on the surface of the water at fishing grounds, etc. If it is set to the non-engaged position with the pin, the shallow water arm will be automatically set to the engaged position with the lock pin, which has the disadvantage that the propulsion unit will not return to the tilt-down state. .

An object of the present invention is to simplify the structure and ensure high operational reliability.

Another object of the present invention is to prevent the shallow water engaging portion from being set to the shallow water cruising state against the driver's will in the cruising state with the tilt lock released.

[Means for Solving the Problems] A tilting 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 the tilt-up-tilt-I and down-directions via a tilt axis. A swivel bracket is attached to the swivel bracket to support the propulsion unit, a lock pin is provided on the clamp bracket, and the swivel bracket is rotatably supported around a support shaft A provided on the swivel bracket, and is locked to hold the propulsion unit in the tilt-down position. a tilt arm having a lock claw portion that engages with the pin and a shallow water engaging portion that engages with the lock pin so as to hold the propulsion unit in the shallow water cruising position; a support portion B provided on the swivel bracket; It has an elastic body that is stretched between the connecting parts C provided on the arm, and when the lock claw part of the tilt arm is set to the lock pin operation mode, both ends of the elastic body are connected. The connection line connecting the supporting part B and the connecting part C is arranged on one side of the tilt arm with respect to the support shaft A, and the shallow water engaging part of the tilt arm is set to the lock pin operation mode. The connection line connecting the support part B and the connection part C, where both ends of the projectile body are connected, is the support shaft A of the tilt arm.
It is arranged on the other side of the

Further, in the present invention, the tilt arm is driven in conjunction with the shift operation of the shift device in a state in which the lock claw portion of the tilt arm is set to the lock pin operation mode, and when the shift device is shifted forward, the lock claw portion is set to the lock pin operation mode. The lock claw portion is set to a non-engaged position with the lock pin, and the lock claw portion is set to an engaged position with the lock pin when the shift device is shifted backward.

[Function] According to the present invention, by swinging the tilt arm around the support shaft A provided on the swivel bracket, a connection is established between the support part B, where both ends of the elastic body are joined, and the connection part C. It becomes possible to place the line on either side of the dead center where the connecting line passes through the support axis A. In other words, the direction of the rotational force exerted on the tilt arm when the projectile is placed at one of the dead centers marked 1 is opposite to the direction of the rotational force exerted on the tilt arm when placed at the other dead center marked E. direction. As a result, this tilt device has a simple structure using a single projectile body, and ensures high operational reliability. The shallow water engaging portion of the lock pin is a shoulder that selectively sets one of the operating modes for the lock pin.

Further, according to the present invention, by switching and setting the arrangement state of the projectile body by the swinging operation of the tilt arm, the lock claw of the tilt arm can be set in the operating mode with respect to the lock pin, and the shallow water engaging portion of the tilt arm can be set in the operating mode. Therefore, when the lock claw part is set to the non-engaging position with the lock pin in conjunction with the forward shift of the shift device, the tilt arm Unless the shallow water engaging part is set to the lock pin operation mode, the shallow water engaging part does not engage the lock pin contrary to the driver's instruction d, and the propulsion unit/total moves freely up and down. It becomes possible to sail on.

Embodiment 1 FIG. 1 is a schematic diagram showing an outboard motor to which the first embodiment of the present invention is applied, and FIG.
External view of the main parts viewed from the direction, Figure 2 (A) and (B) are the first
FIG. 3 is a schematic diagram showing the unlocked state (during forward shift) and reverse lock state (during reverse shift) in the lock claw operating mode of the embodiment, and FIG. 3 is a schematic diagram showing the shallow water engaging part operating mode of the first embodiment. It is.

The outboard motor IO has a clamp bracket 12 fixed to the stern plate 11 of the hull, and a tilt shaft 13 attached to the clamp bracket 12.
The swivel bracket 14 is tiltably supported via the bracket. A substantially circular support portion 15 of the swivel bracket 14 supports a cylindrical steering shaft 16 . Note that an opening 15A is provided in the support portion 15 and the portion of the steering shaft 16 facing the hull side.
, 16A are formed. A propulsion unit 17 is fixed to a portion of the steering shaft 16 that protrudes from the support portion 15. The propulsion unit 17 has an engine unit mounted on the upper part (not shown), and the output of the engine unit is transmitted to the drive shaft 1.
8. It can be transmitted to a propeller 21 fixed to a propeller shaft 20 via a forward/reverse switching mechanism 19 .

The propulsion unit 17 is rotatable with respect to the support portion 15 of the swivel bracket 14 via the steering shaft 16, so that it can be steered. Also, swivel bracket! 4 and the propulsion unit 17 are rotatable with respect to the crank bracket 12 via the tilt shaft 13, and are tiltable between a tilt-up position and a tilt-down position.

A shift lever 22 is provided on the upper side of the propulsion unit 17.
It is possible to swing between three positions: forward position 2t (F), neutral position ffl (N), and reverse position 21 (R). The upper end of a shift rod 24 is pin-coupled to the shift lever 22 via a shift arm 23. A shift cam 25 is fixed to the lower end of the shift rod 24. Note that the shift rod 24 is inserted through the support portion 15 and the steered shaft 16 . shift cam 25
is provided with a forward cam surface, a neutral cam surface, and a reverse cam surface corresponding to the swinging position of the shift lever 22, and the propeller shaft 20
A dog clutch 26, which is integrated in the rotational direction and constitutes the forward/reverse switching mechanism 19, can be moved to three positions: a forward position, a neutral position, and a reverse position. dog clutch 26
In its forward position, the propeller 2 selectively engages with the forward gear 28 that is always engaged with the drive gear 27.
1 is rotated forward, and in its backward position, the propeller 21 is selectively engaged with the drive gear 27 and the above-mentioned reverse gear 29, thereby preventing the propeller 21 from rotating backward.

A tilt arm 30 is rotatably supported via a support shaft A on the front surface of the support portion 15 of the swivel bracket L 14 with respect to the opening 15A. On the other hand, at the bottom of the crank bracket (12), a low screwdriver (31) is connected to the screw hole (31).
It is supported by 2. The front edge of the swivel bracket 14 can abut against the lock pin 31 under the action of forward thrust. The bottle holes 32 are arranged in multiple stages at predetermined intervals in the front-back direction of the crank bracket 12, and are arranged in multiple stages at predetermined intervals in the front-rear direction of the crank bracket 12.
1 can be attached to the bottle hole 32 at any position.

The tilt arm 30 has a lock claw portion 33 that is engaged with a lock pin 31 so as to hold the propulsion unit 17 in the tilt-down position, and a lock claw portion 33 that is engaged with the lock pin 31 so as to hold the propulsion unit 17 in the shallow water navigation position. 31 is provided. (The tilt arm 30 of this embodiment has the lock claw part 33 and the shallow water engaging part 34 integrally formed by sheet metal processing, but the lock claw part 33 and the shallow water engaging part 34 made of different plate pieces etc. are integrally provided. The tilt arm 30 may be formed by coupling to the swivel bracket 14. Furthermore, a resilient body (
The eight bullet projectile 35 to which the tension spring) 35 is tensioned is
■As shown in FIGS. 1, 2 (A), and (B), when the lock claw portion 33 of the tilt arm 30 is set to the operating mode with respect to the lock pin 31, both ends of the elastic body 35 A connecting line connecting the support part B and the connection part C to which the tilt arm 30 is connected is arranged on one side of the tilt arm 30 with respect to the support part A,
■As shown in FIG. 3, when the shallow water engaging part 34 of the tilt arm 30 is set to the operating mode in which it engages with the lock pin 31, the supporting part B to which both ends of the elastic body 35 are connected is set.
A connecting line connecting the connecting portion C and the connecting portion C is arranged on the other side of the tilt arm 30 with respect to the support shaft A.

Furthermore, in this first embodiment, the tilt arm 30
The tilt arm 30 is driven in conjunction with the shift operation of the shift lever 22 in a state in which the lock claw portion 33 is set to the operating mode for the lock pin 31. That is, a drive element 36 is fixed to the intermediate part of the shift rod 24 facing the opening 16A of the steered shaft 16, and a drive element 36 is fixed to the tilt arm 30, extending toward the shift rod 24 side and on the lower surface of the drive element 36. A fork-shaped actuator @37 serving as an abutting circuit is provided. That is, when the shift lever 22 is set to the forward position, i'i' k- is
As shown in FIG. 2(A), the driver 36 moves downward and pushes down the driven part 37 against the elastic force of the elastic body 35,
The lock claw portion 33 of the tilt arm 30 is set to a position where it is not engaged with the lock pin 31. On the other hand, when the shift lever 22 is set to the reverse position, as shown in FIG.
The tilt arm 30 is displaced upward by the elastic force of the tilt arm 30.
The lock claw portion 33 is set to the engagement position with the lock pin 31. FIG. 1 shows the positional relationship between the lock claw portion 33 and the lock pin 31 when the shift lever 22 is set to the neutral position.

Therefore, in this first embodiment, when the projecting body 35 is arranged so that the lock claw part 33 of the tilt arm 30 is set in the operating mode with respect to the lock pin 31, the position shown in FIG. As shown in the figure, the lock claw part 33
is automatically set to a disengaged position with the lock pin 31, making it possible for the propulsion unit 17 to flip up when it collides with an underwater obstacle, and also allows the propulsion unit to be lifted up without interfering with ropes, etc. floating on the water surface at fishing grounds, etc. It is also a DJ ability to sail the 17 in a state where it can freely move up and down. Also,
During a reverse shift, the lock pawl fi33 is automatically set to the engagement position with the lock pin 31, as shown in FIG. 2(B), making it possible to transmit the reverse thrust to the hull side. In addition,
The operating mode of the lock claw portion 33 relative to the lock pin 31 is a holding function in which the driven portion 37 is pressed against the driver 36 by the elastic force of the single projectile 35.

In addition, in this first embodiment, when it is desired to obtain a shallow water cruising state, as shown in FIG. By setting the propulsion unit 17 to a predetermined shallow water cruising position by setting the operation mode to engage the lock pin 31
In the operating mode in which the shallow water proportioning portion 38 provided on the tilt arm 30 is pressed against the stopper portion 39 provided on the swivel bracket 14 by the elastic force of the elastic body 35, it can be held. .

In this first embodiment, the lock claw part 33 engages with the lock pin 30 during forward shifting under conditions in which the shape of the lock claw part 33 and the elastic force of the resilient body 35 are selected to a specific state. The tilt lock state may be maintained during deceleration during forward cruising, and the tilt lock state may be released upon collision with an underwater obstacle.

In addition, as shown in Figure 1 (B), the projectiles may be attached not only on one side but also in symmetrical positions.
The same projectile as 5 is good, but it doesn't necessarily have to be the same one.

The operation of the first embodiment will be explained below.

1- According to the first embodiment, by swinging the tilt arm 30 around the support shaft A provided on the swivel bracket 14, the support part B to which both ends of the elastic body 35 are connected is formed.
It becomes possible to arrange the connecting line connecting the connecting portion C to either side of the dead center where the connecting line passes through the support shaft A. That is, the projectile body 35 has a direction of rotational force exerted on the tilt arm 30 when it is disposed at one of the dead centers, and a direction of a rotational force exerted on the tilt arm 30 when it is disposed at the other dead center. It will be in the opposite direction.

As a result, in this tilt device, the lock pawl 33 of the tilt arm 30 operates against the lock pin 31 with a simple structure using a single projectile body 35 and under conditions that ensure high operational reliability. mode and tilt arm 3
It is possible to selectively set any of the operating modes for shallow water engagement of 0, &34 for mouth, and cupin 31.

Further, according to the above embodiment, by switching and setting the arrangement state of the projectile body 35 by the swinging operation of the tilt arm 30, the lock claw portion 33 of the tilt arm 30 can be set to the operating mode with respect to the lock pin 31 and the tilt state. The shallow water engaging portion 34 of the arm 30 selectively sets the operating mode for the lock pin 31, and therefore, the lock claw portion 33 engages with the lock pin 31 in conjunction with the forward shift of the shift device. When the locking position is set, unless the shallow water engaging part 34 of the tilt arm 30 is set to an operation mode in which it engages with the lock pin 31, the shallow water engaging part 34 will engage the lock pin against the driver's will. 31, the propulsion unit 17 can freely move up and down.

FIG. 4 is a schematic diagram showing the locking claw section operating mode of the second embodiment of the present invention, and FIG. 5 is a schematic diagram showing the shallow water engaging section operating mode of FIG. 2.

In FIGS. 4 and 5, substantially the same members as in the first embodiment are given the same reference numerals.

In FIGS. 4 and 5, 40 is a tilt arm.

The tilt arm 40 is rotatably supported around a support shaft A provided on the swivel bracket 14, and includes a lock claw portion 41 that engages with the lock pin 31 to hold the propulsion unit in the tilt-down position. y) is provided with a shallow water engaging portion 42 that engages with the lock pin 31 so as to hold it in the shallow water navigation position. Reference numeral 43 denotes an elastic body, which is stretched between the support part B provided on the swivel bracket 14 and the connection part C provided on the tilt arm 40, and the lock claw part 41 of the tilt arm 40 acts on the lock pin 31. In state D, which is set to mode, the connection line connecting the support part B and the connection part C, to which both ends of the elastic body 43 are connected, is arranged on one side of the support shaft A of the tilt arm 40, and the tilt arm 40 is set to the operating mode in which the shallow water engaging portion 42 engages with the lock pin 31, the projectile body 43
Support where both ends of are joined? A connecting line connecting BB and connection portion C is arranged on the other side of tilt arm 40 with respect to support shaft A.

As shown in FIG. It is held in a pressed state. In addition, in the operation mode (2) above, as shown in FIG. It is held in a state where it is pressed against the stopper part 47.

Therefore, in this second embodiment, the tilt arm 4 is manually operated.
0, the propulsion unit is placed in the tilt-down position by setting the operating mode in which the lock claw portion 40 of the tilt arm 40 engages with the lock pin 31 during normal sailing as shown in FIG. When cruising in shallow water, the propulsion unit can be locked in a predetermined position by setting it to the f1 movement mode in which the shallow water engaging portion 42 of the tilt arm 40 engages with the lock pin 31, as shown in FIG. It may be set to a shallow water navigation position.

In addition, in this FIG. 2, the shape of the lock claw portion 41 and the elastic force of the elastic body 43 are shown in a specific manner. By selecting E, it is possible to release the engagement state between the locking claw portion 41 and the locking pin 31 by +1 in the event of a collision with an obstacle in the ice.

[Effects of the Invention] As described in 1 below, the 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 the tilt-up-tilt-down direction via a tilt shaft. A swivel bracket that is attached to the swivel bracket and supports the propulsion unit, a lock pin provided on the clamp bracket, and a support shaft A provided on the swivel bracket.
It is rotatably supported around the periphery and includes a lock pawl that engages with a lock pin to hold the propulsion unit in a tilt-down position, and also engages with a lock pin to hold the propulsion unit in a shallow water navigation position. The locking claw part of the tilt arm has When the lock pin is set to the operating mode, the connection line connecting the support part B, to which both ends of the projectile body are connected, and the connection part C is arranged on one side of the tilt arm with respect to the support shaft A; When the shallow water engaging portion of the tilt arm is set to the lock pin operation mode, the connecting line connecting the support portion B and the connecting portion C, to which both ends of the projectile body are connected, is connected to the support shaft A of the tilt arm. It is arranged on the other side of the

In addition, the present invention provides a state in which the lock claw portion of the tilt arm is set to an operating mode with respect to the lock pin, and the tilt arm is driven in conjunction with the shift operation of the shift device, and when the shift device is shifted forward. The lock pawl portion is set to a non-engaging position with the lock pin, and the lock pawl portion is set to an engaging position with the lock pin when the shift device is shifted backward.

Therefore, according to the present invention, by swinging the tilt arm around the support shaft A provided on the swivel bracket, the supporting part B and the connecting part C, to which both ends of the elastic body are connected, can be moved.
It becomes possible to arrange a connecting line connecting the two on either side of the dead center where the connecting line passes through the support shaft A. That is, the direction of the rotational force exerted on the tilt arm when the projectile is placed at one of the dead centers is opposite to the direction of the rotational force exerted on the tilt arm when the projectile is placed at the other dead center. I will do it. As a result, this tilt device has a simple structure using a single projectile body, and ensures high operational reliability. The shallow water engaging portion can selectively set one of the operating modes for the lock pin.

Further, according to the present invention, by switching and setting the arrangement state of the first projectile by the swinging operation of the tilt arm, the lock claw of the tilt arm can be set in the operating mode with respect to the lock pin, and the shallow water engaging portion of the tilt arm can be set. Therefore, when the lock claw part is set to the non-engaging position with the lock pin in conjunction with the forward shift of the shift device, the tilt arm Unless the shallow water engaging part is set to the lock pin operation mode, the shallow water engaging part will not engage the lock pin against the driver's will, and the propulsion unit will sail in a state in which it freely moves up and down. Doing so becomes a skill.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an outboard motor to which the first embodiment of the present invention is applied, and FIG.
External view of the main parts viewed from the direction, Figure 2 (A) and (B) are the first
A schematic diagram showing the unlocked state and reverse lock state in the lock claw operating mode of the embodiment, FIG. 3 is a schematic diagram showing the shallow water engaging part operating mode of the first embodiment, and FIG. 4 is a schematic diagram showing the second embodiment of the present invention. A schematic diagram showing the lock claw operation mode of the embodiment,
FIG. 5 is a schematic diagram showing the operating mode of the shallow water engaging portion of the second embodiment. DESCRIPTION OF SYMBOLS 10... Outboard motor, 11... Stern plate, 12... Crank bracket, 13... Tilt axis, 14... Swivel bracket, 17... Propulsion unit, 22...
Shift lever 130...Tilt arm, 31...Lock pin, 33...Lock claw portion, 34...Shallow water engaging portion, 35...Bullet body, 36...Driver, 37...・・・
Followed part, 40... Tilt arm, 41... Lock claw part, 42... Shallow water engaging part, 43... Bullet projector. Agent Patent Attorney Osamu Shiokawa Figure 2 (A) Figure 2 (B) Figure 3 Figure 4 Figure 5

Claims (2)

[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 and tilt-down directions and supports the propulsion unit, and a lock pin provided on the clamp bracket. , is rotatably supported around a support shaft A provided on the swivel bracket, and includes a lock claw portion that engages with a lock pin to hold the propulsion unit in the tilt-down position, and also to move the propulsion unit to the shallow water navigation position. It has a tilt arm having a shallow water engaging part that engages with the lock pin so as to hold it, and an elastic body that is stretched between a support part B provided on the swivel bracket and a connection part C provided on the tilt arm. , 1. Under the condition that the lock claw part of the tilt arm is set to the lock pin operation mode,
A connecting line connecting the supporting part B and the connecting part C, to which both ends of the projectile body are connected, is arranged on one side of the tilt arm with respect to the support shaft A, and [2] the shallow water engaging part of the tilt arm is connected to the lock pin. When the operating mode is set, the connection line connecting the support part B and the connection part C, where both ends of the projectile body are connected, is
A tilt device for a marine propulsion device placed on the other side of the tilt arm with respect to the spindle A. (2) With the lock claw portion of the tilt arm set to the lock pin operating mode, the tilt arm is driven in conjunction with the shift operation of the shift device, and the lock claw portion is locked when the shift device shifts forward. 2. The tilt device for a marine vessel propulsion device according to claim 1, wherein the lock claw portion is set to a non-engaging position with the pin, and when the shift device is shifted backward, the lock claw portion is set to an engaging position with the lock pin.