JPS5970296A - Tilt locking device in ship propelling apparatus - Google Patents

Abstract

PURPOSE:To allow a tilt locking device to be readily jumped up upon collision with an obstacle in water, by providing a subspring for biasing a subarm toward such a direction as to engage with a lock pin. CONSTITUTION:During inertial running, a subpawl portion 56 of a subarm 55 is engaged with a lock pin 20 by a biasing force of a subspring 57 sufficient to cope with resistance of inertial running, so as to surely prevent a propelling unit 16 from being jumped up. Upon collision with an obstacle in water, after the subpawl portion 56 of the subarm 55 is engaged with the lock pin 20, a main pawl portion 43 of a main arm 42 is engaged with the lock pin 20, and a main spring 45 is expanded to disengage the lock pin 20 from both the main pawl portion 43 of the main arm 42 and the subpawl portion 56 of the subarm 55, and thereby to rotate the main arm 42 and the subarm 55 in an integral manner about a support pin 41 in an unlocked direction, so as to jump up the propelling unit 16.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tilt lock device suitable for use in a marine vessel propulsion device such as an outboard motor or an inboard/outboard motor. -Figure 1 is a side view showing a general inboard/outboard motor.

A swivel bracket 1 is connected to a cranky bracket 12 fixed to a stern plate 11 of the hull via a tilt shaft 13.
4 is supported rotatably around a substantially horizontal axis. A propulsion unit 16 is supported on the cylindrical portion 15 of the swivel bracket 14 through a rotation shaft (not shown) so as to be rotatable about an axis perpendicular to the tilt shaft 13. That is, the propulsion unit 16 can be steered around the cylindrical portion 15 of the swivel bracket 14, and can be tilted up or tilted down around the tilt axis 13 of the clamp bracket 12.

Here, a conventional inboard/outboard motor is equipped with a tilt lock device as shown in an enlarged view in FIG.

That is, an arm 18 is swingably supported on the cylindrical portion 15 of the swivel bracket 14 via a support pin 17 . A claw portion 19 provided at the front end of the arm 18
can be secured to a lock bin 213 held by the clange bracket 12. The head of the frame 1B is an upright part 21 that stands up along the rear surface of the cylindrical part 15, and a spring 22 is interposed between the lower end of this upright part 21 and the upper end of the cylindrical part 15. That is, the arm 1B is biased counterclockwise in FIG. 1 by the springs 2, 2, and the claw portion 19 of the arm 18 is engaged with the lock bin 20, thereby making it possible to maintain the propulsion unit 16 in its tilt-down position. It is said that

Further, as shown in FIG. 2, a tilt lever 23 is rotatably supported on the upper part of the swivel bracket 14 by manual operation, and the tilt lever 23 is connected to Arm 18
is connected to the front end of the That is, tilt lever 2
3, the arm 1B can be rotated about the support bin 1T to a position where it cannot be engaged with the lock bin 20.

Furthermore, on the front side of the propulsion unit 16 facing the upright part 21,
A shaft 2T is rotatably supported, and a locking member 2 is attached to the shaft 27.
B and shift lever 29 are fixed. A remote control cable 300 inner 31 is locked to the shift lever 29 . That is, with respect to the neutral position shown in Fig. 81, when moving forward, the inner 31 of the remote control cable 30 is in the first position.
The shift lever 29 protrudes from the state shown in the figure and rotates clockwise, and when the vehicle moves backward into a trench, the inner 31 is retracted and the shift F lever 29 rotates counterclockwise. During this backward movement, the locking member 28 fixed to the shaft 2T also rotates in the counterclockwise direction together with the shift lever 29, and the tip of the locking member 28 is located behind the upright portion 21 of the arm 18, Rotation of the arm 180 is regulated to prevent the tilt lock from being released during astern travel, thereby making it possible to transmit the astern thrust of the propulsion unit 16 to the hull.

That is, in the conventional tilt lock device described above, when the lock member 28 and the upright portion 21 of the arm 18 are in contact with each other, the claw portion 19 of the arm 18 and the lock pin 2 are in contact with each other.
0 and prevents the propulsion unit 16 from jumping up, and when coasting due to deceleration in a forward state, the
The spring force of the sill 22 maintains the engagement between the claw portion 19 of the arm 18 and the lock pin 20 to prevent the propulsion unit 16 from jumping up. When there is a collision with an underwater obstacle during forward movement, the spring 22 is expanded to release the engagement between the claw portion 19 of the arm 18 and the lock bin 20, allowing the propulsion unit 16 to jump up.

Therefore, the holding force of the tilt lock in the above conventional tilt lock device depends on the shape of the claw portion 19 provided on the rear arm 18 and the spring force of the spring 22.
Prevents bouncing up when coasting.

It is necessary to set the optimum state by taking into consideration two points: bounce up when colliding with an underwater obstacle.

However, the spring force of the spring 22 cannot be selected to a sufficient value due to constraints on the installation space of the spring 22 and the need to reduce the manual tilt-up operation force applied to the tilt lever 23. Therefore, the shape of the claw portion 19 is important, but it is difficult to set and maintain the shape of the claw portion 19 in a delicate shape due to constraints on machining accuracy, wear during use, etc. Therefore, the shape of the claw portion 19 tends to make it difficult to release the tilt lock and to increase the holding force of the tilt lock.

In other words, when using a conventional tilt lock device,
Even if it is possible to reliably prevent bouncing up during coasting,
It is difficult to allow the propulsion unit 16 to easily jump up when it collides with an underwater obstacle, and a large impact force is applied to the propulsion unit 16 when it collides with an underwater obstacle, which may cause damage.

SUMMARY OF THE INVENTION An object of the present invention is to provide a tilt lock device for a marine vessel propulsion device that reliably prevents the vessel from bouncing up during coasting and can easily bounce up when colliding with an underwater obstacle.

In order to achieve the above object, a tilt lock device for a marine propulsion device according to the present invention includes a main arm rotatably supported on a swivel bracket and having a main claw portion that can be held in a lock bin provided on a clamp bracket. , a main spring that is interposed between the swivel bracket and the main arm and biases the main arm in the direction of engagement with the lock bin, and a main spring that is rotatably supported by the main arm and is biased toward the lock bin. It has a secondary arm having a secondary claw part that can be combined with the secondary arm, and a secondary spring that is interposed between the main arm and the secondary arm and biases the secondary arm in the direction of engagement with the lock bin. After the engagement process, the main arm and the lock bin are brought into a locked state.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 is a side view showing the locked state of the tilt lock □ device according to an embodiment of the present invention when moving forward.

Fig. 4 is a view along the line IV-IV in Fig. 3, Fig. 5 is a side view showing the tilt lock device in the locked state during coasting, and Fig. 6 is the unlocked state of the tilt lock device. FIG.

The inboard/outboard motor to which the tilt lock device according to this embodiment is applied is constructed in the same manner as shown in FIG. A swivel bracket 14 is rotatably supported via a tilt shaft 13.

A propulsion unit 16 is rotatably supported on the cylindrical portion 15 of the swivel bracket 14 through a rotation shaft 15A shown in FIG. 4 about an axis perpendicular to the tilt shaft 13. That is, the propulsion unit 16 is.

Centering around the rotation axis 15A of the swivel bracket 14,
It can be steered, and can also be tilted up or down about the tilt axis 13 of the clange bracket 12.

Also, a lock bin 2 is provided at the bottom of the clamp bracket 12.
0 is disposed, and when moving forward, the engaging portion 15B of the cylindrical portion 15 comes into contact with the lock bin 20 as shown in FIGS. 3 and 4, making it possible to transmit the forward thrust of the propulsion unit 16 to the hull side. .

Further, the support bin 41 is fixed to the m section 15 of the swivel bracket 14 with a set screw 41A.

A main arm 42 is swingably supported via this support bin 41. A free claw portion 43 formed at the front end of the main arm 42 is capable of engaging with the lock pin 20. The rear part of the main arm 42 is an upright part 44 along the rear surface of the cylindrical part 15, and a main spring 45 is interposed between the lower end of the upright part 44 and the upper end of the cylindrical part 15. That is, the main arm 42 is given a biasing force in the −1 direction by the main spring 45 so that its free claw portion 43 engages with the lock bin 20 . Note that the main claw portion 43 of the main arm 42
are the sub-claw portion 56 of the sub-arm 55 and the lock bin 2, which will be described later.
After passing through the locking process with 0, it is possible to engage with the lock bin 20.

Further, a tilt lever 46 is supported on the upper part of the swivel bracket 14 so as to be rotatable by manual operation about a bin 47. One end of a connecting rod 48 is connected to the tilt lever 46, and the other end of the connecting rod 48 is connected via a pin 49 to an intermediate lever 50 supported at the intermediate portion of the swivel bracket 14. For the intermediate lever 50.

One end of the connecting rod r51 is connected, and the other end of the connecting rod 51 is connected to the front end of the main arm 42 via a pin 52. That is, when the tilt lever 46 is manually rotated from the state shown in FIG. 3 to the state shown in FIG. 6 against the spring force of the main spring 45, the connection rod 51 is connected to the intermediate lever 50. The points are bin 49 and bin 5
It stops on the right side in the figure from the line connecting 2, and the main arm 42
is held in a position where it cannot engage with the lock bin 20, and the propulsion unit 16 can be tilted up.

Further, the front pressure of the propulsion unit 16 facing the upright portion 44 is as follows:
A shaft 53 is rotatably supported, and a locking member 5 is attached to the shaft 53.
4 and the shift lever are fixed. That is, in the same way as shown in FIG. 1, the shaft 53 is rotated when moving forward or backward, and when moving backward, the locking member 54 is positioned in contact with the upright portion 44 as shown by 54R in FIG. By preventing rotation of the main arm 42 when traveling backwards.

This forcibly prevents the propulsion unit 16 from jumping up when moving backward, and allows the backward thrust of the propulsion unit 16 to be transmitted to the hull side.

In the above embodiment, on both sides K of the main arm 42, via the bottle 52 provided on the main arm 42,
A pair of left and right sub-arms 55 are rotatably supported. The front end of the sub arm 55 is provided with a sub claw portion 56 that can engage with the lock pin 20. In addition, the sub arm 55
A sub spring 57 is interposed between the rear end portion of the main arm 42 and the upright portion 44 of the main arm 42 to bias the sub claw portion 56 in the direction of engagement with the lock bin 20 . Further, a stopper 5 is provided at the rear end of the sub arm 55 and is engaged with the rear end of the raw arm 42.
8 is provided, and the stopper 58
The locking pin 2011 restricts rotation in the counterclockwise direction with respect to 2, and locks the secondary claw portion 56 against the main claw portion 43 during forward movement.
The amount of protrusion toward 1 can be regulated. That is, main arm 42. When the sub arm 55 moves forward without engaging the lock bin 2o, the sub claw part 56 protrudes from the main claw part 43 to the lock bin 201111 by a predetermined amount, and when the sub arm 55 is inertia decelerated from the forward state or when moving backward. The sub-claw portion 56 of the sub-arm 55 engages with the locking pin 20, making it possible to maintain the retained state under the action of the spring force of the sub-spring 51. In addition, in the event of a collision with an underwater obstacle under the above-mentioned forward movement state, the raw claw portion 43 of the main arm 42 undergoes an engagement process between the sub claw portion 56 of the sub arm 55 and the lock bin 2o.
engages with the lock pin 20, and the springing force accompanying the collision exceeds the resistance based on the spring force of the main spring 45 and the sub spring 57.
3 is released from the lock bin 2o, and the main arm 42
The auxiliary arm 55° integrally rotates the support pin 41 in the unlocking direction, making it possible to flip up the propulsion unit 16.

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

First, when moving forward, the retaining part 15B formed in the cylindrical part 15 of the trap swivel bracket 14 comes into contact with the lock bin 2o, as shown in FIG. 3, and transmits the forward thrust of the propulsion unit 16 to the hull side. When traveling backwards, after the sub claw part 56 of the sub arm 55 engages with the lock bin 20, the fifth
As shown in the figure, the free claw portion 43 of the main arm 42 engages with the lock pin 2°, and the upright portion 44 of the main arm 42 engages with the lock pin 2°.
The locking member 54 is pressed to the rear of the propulsion unit 1 as shown at 54F in FIG.
The backward thrust of 6 is transmitted to the hull side through engagement between the main claw portion 43 of the main arm 42 and the lock bin 20.

During the next phase of coasting, the secondary claw portion 56 of the secondary arm 55 engages with the lock bin 20 as shown in FIG. 5 under the biasing force of the secondary spring 57 sufficient to counter the coasting resistance, and Reliably prevents from jumping up. In addition, since the spring force of the sub spring 57 is transmitted to the sub pawl portion 56 through the large ratio of the sub arm 55 when the pin 52 is rotated, the set spring force of the sub spring 57 is greatly expanded. .

The sub claw portion 56 can be firmly engaged with the lock bin 20.

Next, in the event of a collision with an underwater obstacle, first, the secondary claw portion 56 of the secondary arm 55 engages with the lock bin 20, as in the case of coasting shown in FIG. The claw portion 43 engages with the lock pin 20, and the main spring 45 further expands, so that the main claw portion 43. of the main arm 42 as shown in FIG. Then, the engagement between the secondary claw portion 56 of the secondary arm 55 and the lock bin 20 is released, the main arm 42 and the secondary arm 55 integrally rotate around the support pin 41 in the unlocking direction, and the propulsion unit 16 springs up.

That is, according to the above implementation, it is possible to reliably prevent springing up during coasting, mainly by setting the spring force of the secondary spring 57, regardless of the delicate setting of the nail shape of the raw claw part 43 or the secondary claw part 56. . Therefore, the main claw portion 43
and the shape of the sub-claw part 56 is made into a shape that allows it to easily spring up;
The propulsion unit 16 can be easily flipped up upon collision with an underwater obstacle. Note that the manual tilt lock release operation force applied to the tilt lever 46 only needs to resist the biasing force of the main spring 45, and even if the spring force of the sub spring 57 is increased, the above operation force will not become large. .

As described above, the chill lock device for a marine propulsion device according to the present invention includes a main arm that is rotatably supported by a swivel bracket and has a free claw portion that can be engaged with a lock bin provided on a clange bracket.

It is interposed between the swivel bracket and the main arm.

A main spring biases the main arm in the direction of engagement with the lock bin, and is rotatably supported by the main arm.

a sub-arm having a sub-claw portion that can be engaged with the lock bin, which is provided on the clamp bracket; and a sub-spring that is interposed between the main arm and the sub-arm and biases the sub-arm in the direction of engagement with the lock bin. After the secondary arm and the lock bin go through a process of engagement, the main arm and the lock bin are brought into a locked state. Therefore, during coasting, the auxiliary arm engages with the lock bin under the biasing force of the auxiliary spring sufficient to counter the coasting resistance, thereby preventing the propulsion unit from jumping up. When the tow collides with an underwater obstacle, the secondary spring first extends, and after going through the process of locking both the main arm and the secondary arm with the lockbin, the main spring extends and locks both the main arm and the secondary arm with the lockbin. Release the engagement and flip up the propulsion unit. In other words, the propulsion unit bounces up 9 during coasting, regardless of the delicate setting of the claw shape of the main claw portion or the secondary claw portion.

This can be reliably prevented mainly by setting the spring force of the auxiliary spring. Therefore, the shapes of the natural claw portion and the sub-claw portion are such that the propulsion unit can be easily flipped up, and the propulsion unit can be easily flipped up upon collision with an obstacle.

[Brief explanation of drawings]

Fig. 1 is a side view showing a general inboard/outboard motor, Fig. 2 is a side view showing a conventional tilt lock device, and Fig. 3 is a lock when the tilt lock device according to an embodiment of the present invention moves forward. Fig. 4 is a side view showing the state, Fig. 4 is a view along the line IV-IV in Fig. 3, Fig. 5 is a side view showing the locked state of the tilt lock device during coasting, Fig. 6 is the tilt FIG. 3 is a side view showing the locking device in an unlocked state. 11... Stern plate, 12... Clamp bracket, 1
3...Tilt axis, 14...Swivel bracket, 1
6=°propulsion unit, 20-°°lock pin, 42...
- Main arm, 43...Main claw part, 45...Main spring, 55...Sub-arm, 56...Sub-claw part. Agent Patent Attorney Shuji Tsumukawa -52'/ Figure 2 Figure 3 Figure 6 Figure 4 Figure 5 Procedural Amendment (Voluntary) January 7-7, 1981 Commissioner of the Japan Patent Office Kazuo Wakasugi L. Display of the case 1981 Patent FA No. 18 (15811 No. 2, Title of invention: Tilt-lock device for marine propulsion system 3 Relationship with the case of the person making the amendments) Name of patent applicant Title: Yamaha Motor Co., Ltd. 4 Agent address: 105 Address: Port of Tokyo 8F, Mori Building, No. 23-7, Ward Toramon-Chome, Detailed description of the invention in the specification and Drawing 6 Contents of the amendment "Fifth
Figure 421 ++) J Specification No. 1 (After "It is closed" on page 1, line 20.
It is placed in the forward position shown by tt. ” is added. (8) 1-Inertia time J on page 11, line 19 of the specification is “
"When coasting". (4) r 54FJar54R on line 13aiZ of the specification
Change JK. (5) Figure 3 of the drawings has been revised as shown in the attached sheet. Figure 3 above

Claims (1)

[Claims] (1) In a tilt lock device for a marine propulsion device, the swivel bracket is rotatably supported by a swivel bracket via a tilt axis on a cranky bracket fixed to the stern plate of the ship, and the propulsion unit is supported on the swivel bracket. A main arm that is rotatably supported and has a natural claw that can be engaged with a lock pin provided on the clange bracket, and is interposed between the swivel bracket and the main arm, and is arranged in a direction in which the main arm is engaged with the lock pin. a main spring that biases the main spring; a sub-arm that is rotatably supported by the main arm and has a sub-shaped part that is engageable with the lock pin provided on the clamp bracket; and a valve between the main arm and the sub-arm. and a secondary spring that biases the secondary arm in the direction of engagement with the lock pin. A tilt lock device for a marine propulsion device, characterized in that the main arm and the lock pin reach a locked state after the sub arm and the lock pin go through a locking process.