JPH0547760Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a reverse lock mechanism that is linked to clutch lever operation of an outboard motor.

(Prior Art and Problems) In conventional reverse lock mechanisms for outboard motors that are linked to clutch lever operation, the reverse lock fitting and the clutch lever are rigidly connected.

FIG. 2 shows this conventional example.

1, 1 is a pair of left and right stern brackets for fixing the outboard body to the rear of the hull, and 2 is a swivel bracket that is vertically movably held on the stern bracket 1 via bolts 3 and supports the propulsion unit 4. . Reference numeral 5 denotes a hollow bracket shaft through which the propulsion unit 4 is held so as to be rotatable left and right relative to the swivel bracket 2.
Reference numeral 6 denotes a thrust pin held by the stern brackets 1, 1, with which the swivel bracket 2 abuts.

Reference numeral 7 denotes a reverse lock fitting, which is rotatably held by the swivel bracket 2 via a pin 8, and whose hook-shaped tip can engage with the thrust pin 6. A spring 9 is provided between the reverse lock fitting 7 and the swivel bracket 2, and is used to connect the reverse lock fitting 7 to the thrust pin 6.
is biased in the direction of engagement.

Further, a link 10 is connected to the reverse lock fitting 7, and the lower end of the link 10 is fixed to a joint 12 held by the clutch lever rod 11 so as to be slidable up and down. The clutch lever rod 11 passes through the bracket shaft 5, and its upper end is rotatably held by an arm 14 that is coaxial with the clutch lever 13, which is rotatably held by the motor cover, and its lower end is not shown. It is connected to the clutch cam inside the gear case. A collar 15 is fixed in the middle of the clutch lever rod 11, and the joint 12 is urged downward by a spring 9 and rests on this collar 15.

The clutch lever 13 can be rotated to three positions with moderation. This switching causes the clutch lever rod 11 and the clutch cam to move up and down, occupying three positions from the bottom: reverse, neutral, and forward. Figure 2 now shows the state of backward movement. At this time, the tip of the reverse lock fitting 7 is engaged with the thrust pin 6 by the force of the spring 9, and the outboard body including the swivel bracket 2 is rotated around the bolt 3 by the force in the backward direction (arrow) from the propeller. This prevents the camera from tilting up to the upper right of the screen. (state of reverse lock). As shown in FIG. 2, when the clutch lever 13 is switched to neutral or forward, the clutch lever rod 11, collar 15, joint 12, link 10, and reverse lock fitting 7 are lifted up against the force of the spring 9, and the reverse lock is activated. The engagement between the metal fitting 7 and the thrust pin 6 is released, and the reverse lock is released.

Problems tend to occur here when the clutch lever is switched from neutral to forward while moving in reverse. The thrust force by the propeller during backward movement is in the direction of the arrow in Figure 2. The reverse lock fitting 7 and the thrust pin 6 are engaged and meshed. The meshing surfaces are in a crimped state, and this meshing transmits the backward force of the propeller to the hull. Naturally, when switching the clutch, the accelerator is released to slow down the boat, but basically the reverse lock fitting 7 and the slat pin 6 are in a crimped state, and this is the upper part of the clutch lever rod. There was a risk that the movement of the vehicle would be blocked and the clutch lever could not be operated to switch from reverse to neutral. The present invention attempts to solve this problem.

(Means for solving the problem) The present invention attempts to solve the problem by inserting a spring 16 between the joint 12 and the collar 15.
In other words, the reverse lock fitting 7 and the thrust pin 6
Even if the clutch does not disengage, the clutch lever rod 11 can move upward, making it possible to switch the clutch.

(Example) An example of the present invention is shown in FIG. In the middle of the clutch lever rod 11, the collar 1 in FIG.
5, a washer 17 is held by a pin 18. Another difference from FIG. 2 is that a spring 16 is interposed between a joint 12 which is vertically slidably held on the clutch lever rod 11 and a washer 17. The lock fitting 7 is made to be a stronger spring than the spring 9 which urges it in the direction of engagement with the thrust pin 6.

These two springs are approximately balanced at the position where the reverse lock fitting 7 engages with the slat pin 6.
The other component configurations are the same as in FIG. 2. Now,
In this structure, when the clutch lever 13 is in the reverse position, the clutch lever rod 11 is at the lowest position, and the reverse lock fitting 7 and the thrust pin 6 are connected to each other.
is engaged and in a reverse lock state.
Further, when the clutch lever 13 is in the neutral position or in the forward position, the reverse lock fitting 7 and the thrust pin 6 are disengaged from each other, and the reverse lock is released, as in the conventional example shown in FIG.

Now, if you try to switch the clutch lever 13 to neutral while the boat is moving astern with the clutch lever in the astern position, the propeller thrust in the astern direction will engage the reverse lock fitting 7 and the thrust pin 6, causing them to be crimped. Even if the clutch becomes difficult to disengage, the spring 16 deforms and the clutch lever rod 11 and clutch lever 13 can move, allowing the clutch to be switched to neutral. You can also switch to forward movement in the same way. When the clutch is in the neutral or forward state, the rearward thrust becomes 0, or the reverse direction of forward movement occurs, and the force that presses the reverse lock fitting 7 into the thrust pin 6 while still being engaged disappears, or conversely, there is no force that forces it to release. Because it will be,
The reverse lock fitting 7 will come off easily, and the spring 1
The reverse lock will be released with the force of 6. In this case, there is a time delay between switching the clutch lever from reverse to neutral forward and releasing the reverse lock, but this poses no problem in practice.

(Effect of the invention) By interposing the spring 16, it is now possible to reliably switch the clutch between reverse, neutral, and forward. It is necessary to frequently operate the clutch lever and throttle when berthing a ship, but these operations can now be performed reliably, making it easier to maneuver in tight spaces even in rough weather.

[Brief explanation of drawings]

FIG. 1 is a side view of a reverse lock mechanism according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a conventional example. 1... Stern bracket, 2... Swivel bracket, 7... Reverse lock fitting, 10...
Link, 11...Clutch lever rod, 12...
...Joint, 13...Clutch lever, 16...
...Spring, 17...Watsya.

Claims (1)

[Scope of utility model registration request] A stern bracket for fixing the outboard body, a swivel bracket held by the stern bracket so as to be able to move up and down, a thrust pin held by the stern bracket, and a stern bracket held by the stern bracket to be able to rotate freely and reverse lock. The clutch lever has a reverse lock metal fitting that can be engaged with a thrust pin, a clutch lever, and a clutch lever rod that connects to the clutch lever, and a link is interposed between the clutch lever rod and the reverse lock metal fitting to lock the clutch lever. A washer that is held in the middle of the clutch lever rod, a joint that is held on top of the washer so that it can slide up and down on the clutch lever rod via a spring, and a joint that is connected to the reverse lock fitting. A reverse lock mechanism for an outboard motor characterized by a link connected between a reverse lock fitting and a reverse lock fitting.