JPS6012798Y2 - Reverse lock mechanism in outboard motors - Google Patents

Description

[Detailed description of the invention] This invention has a stern bracket attached to the hull.
Reverse for outboard motors in which a swivel bracket with a propulsion blade and the engine that drives it is pivoted, and the swivel bracket is tilted up to the rear as necessary when the ship is stationed or cruising in shallow water. This relates to a locking mechanism.

The above-mentioned outboard motor locks the swivel bracket to prevent it from tilting up while the boat is moving backwards, and
The boat is equipped with a reverse lock mechanism that tilts up the swivel bracket using a constant impact force when the drive unit attached to the swivel bracket collides with an obstacle while the ship is moving forward.

The prior art related to this is US Patent No. 3.
．． 785.32 specification, Japanese Utility Model Publication No. 1986-8606, Japanese Utility Model Application Publication No. 48-106087, and Japanese Utility Model Application Publication No. 1987-106087-
There are some methods described in Japanese Patent No. 42996, etc., but in these methods, the detachment of the lock hook that locks the swivel bracket to the stern bracket from the tilting lever provided on the stern bracket due to the above-mentioned impact force, The elastic member attached to the hook may stretch and its force increases, or the lock hook may be pivoted to a fixed position on the swivel bracket via a pin, making it difficult to rotate the hook. There was a risk that the process would not be carried out smoothly.

However, among the above prior art examples, Utility Model Application Publication No. 48-1060
In the one of Publication No. 87, the lock hook is movably attached to the swivel bracket by inserting a pin provided on the swivel bracket into a long hole provided in the lock hook, but the long hole goes backward. When the hook is detached from the tilting lever due to the impact force, the pin moves toward the higher side of the elongated hole, causing the hook to tilt downward. Further stretching of the elastic member attached thereto resulted in the problem of increased resistance of the member.

The object of the present invention is to provide the above-mentioned reverse lock mechanism, which eliminates the above-mentioned fears and problems as much as possible.

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a swivel bracket, and this swivel bracket 1 is attached to a drive unit 3 having a propulsion blade 2 below, and above the drive unit 3 is an engine that drives the propulsion blade 2. A section 4 is provided.

The protruding part 5 protruding forward from the upper part of the swivel bracket 1 is pivotally attached to the stern bracket 7 by a pivot 6, and with the bracket 7 attached to the hull, the swivel bracket 1, the driving part 3, etc. are tilted rearward. It is now possible to upload.

Further, reference numeral 8 denotes a reverse lock mechanism, which is constructed as described below.

That is, as shown in FIG. 2, the reverse lock mechanism 8 includes a vertically elongated first engagement slit 10 at the base of the lock hook 9, and a horizontally elongated arc-shaped engagement slit located above the slit 10 in the front-rear direction. 2 engagement slits 11 are formed, and the first engagement slit 10 is engaged with a pivot pin 12 provided on the swivel bracket 1, and the lock hook 9 is
It is attached to be movable up and down along the slit 10 and rotatable up and down around the pin 12.

A lower spring hook pin 13 is attached to the second engagement slit 11 of the lock hook 9 and is slidably fitted into the slit 11. A lock spring 15 is hung on the upper spring hook pin 14, and the tension of this spring 15 causes
The lock hook 9 is biased to rotate clockwise about the pivot pin 12.

Further, a locking portion 16 that projects downward is formed at the tip extending forward and downward from the base of the lock hook 9, and this engaging portion 16 is positioned at the front and lower side of the pivot pin 12 when locked. A tilting lever 17 provided on the stern bracket 7 is removably engaged from the front upper side, and a thrust receiving portion 18 formed on the swivel bracket 1 is opposed to the rear of the lever 17. ing.

Further, a link plate 19 is pivotally attached to the protrusion 5 of the swivel bracket 1 through a link pin 20, and a reverse lock lever 21 and a lock link 22 are rotatably connected to the link plate 19. There is.

The lock lever 21 has a ring-shaped finger hook 23 formed at the tip that projects forward from the protrusion 5, and the lock ring 22 is connected to a connecting pin 24 provided at the tip of the lock hook 9. There is.

In the reverse lock mechanism configured as described above, under normal conditions, the lock hook 9 is urged clockwise around the pivot pin 12 by the spring tension of the lock spring 15, as shown by the solid line in FIG. The joining part 16 is the tilting lever 17
Since rotational force is applied in the engaging direction to the thrust receiving part 18 and the tilting lever 17 when the ship is traveling forward.
The swivel bracket 1 is locked from rotating rearward by the engagement with the tilting lever 17 and the engagement part 16 when traveling in reverse. They are located so that there are gaps between the upper part of the first engagement slit 10 and the pivot pin 12 and between the right part of the second engagement slit 11 and the lower spring hook pin 13, respectively.

In this locked state, if the drive unit 3 collides with an obstacle while the ship is traveling forward and an impact force of more than a certain level is applied to it, the engagement unit 16 of the lock hook 9 is activated via the tilting lever 17.
A force F, indicated by an arrow in FIG. 2, acts as a reaction force.

Then, this force causes the lock hook 9 to move as shown in FIG.
As shown by the dashed dotted line, the first engagement slit 10 at the base slides forward and downward with respect to the pivot pin 12 against the spring force of the lock spring 15, forming an arcuate longitudinally elongated The second coupling slit 11 slides rearwardly and laterally relative to the lower spring-loading pin 13.

Furthermore, when an impact force greater than the above-mentioned impact force is applied, the retaining portion 16 comes off from the tilting lever 17 without moving the position of the spring pin 13 much, and the swivel bracket 1 is rotated rearward. In this case, it is unlikely that the lock spring 15 will be further expanded to further increase its spring force, and therefore the lock hook 9 will be rotated in the counterclockwise direction as described above, and the swivel bracket 1 will be tilted rearward. Uploading is done smoothly.

Also, when the lock hook 9 is running backwards, a reaction force F acts on the locking part 16 of the lock hook 9 via the tilting lever 17. When an impact force of a certain level or more is applied to the collision force, the reaction force F acting on the retaining portion 16 is extremely smaller than the reaction force F, so when traveling backward, the engagement of the retaining portion 16 with the tilting lever 17 is extremely small. There is no such thing as being canceled.

In addition, in the locked state described above, the reverse lock lever 2
1, the link plate 19 rotates clockwise around the link pin 20 as shown by the two-dot chain line in FIG. By pulling it upward, this lock hook 9 rotates, and its retaining part 16 comes off from the tilting lever 17, and the swivel bracket 1
tilt-up is possible.

In this case, in the embodiment, the upper part of the lock link 22 is bent, and this link 22 is connected to the link pin 20.
The line of action connecting the connection point of the lock link 22 to the link plate 19 and the connection point with the lock hook 9 moves from the rear of the link pin 20 to the front, and the lock lever 21
, link plate 19. The lock link 22 will not return due to the toggle action.

To change from this state to the locked state, the lock lever 21 can be pushed in.

However, in the present invention, the lock lever is pivotally attached to the protrusion of the swivel bracket 1, instead of using a lock release mechanism as in the embodiment, and only when this lever is pressed, the lock link is pulled up and the lock is released. , conventionally known ones may be used.

As explained above, in the present invention, the pivot pin 12 provided on the swivel bracket 1 is engaged with the vertically long first engagement slit 10 provided at the base of the lock hook 9, and the vertically long first engagement slit 10 provided above is The lower spring hanging pin 13 is slidably fitted into the second retaining slit 11 which is horizontally elongated in the arc shape. The tilting lever 17 is provided with a lock spring 15 that urges it to rotate clockwise about the lock hook 9, and an engaging portion 16 formed so as to protrude downward at the front end portion of the lock hook 9 that extends downward from the front. The swivel bracket 1 is removably engaged with the swivel bracket 1 so that the engagement is not released when traveling in reverse, and in this locked state, when the moving part collides with an obstacle while traveling forward, the swivel bracket 1 is The impact force causes the lock hook 9 to release the lock spring 15.
The first and second engaging slits 10.11 are connected to the respective pivot pins 12. The lock spring 15 is configured to slide and rotate counterclockwise relative to the spring hook pin 13, and then release the engagement when an impact force greater than the impact force is applied. Since the spring force of the lock spring 15 does not increase further due to extension, there is no need to set the spring force of the lock spring 15 to be larger than necessary, and the durability of the lock spring 15 is high, so that the spring force setting of the lock spring 15 is not increased beyond a certain level at the time of the collision. When an impact force of This has the effect that uploading is performed smoothly.

[Brief explanation of drawings]

Fig. 1 is a schematic side view showing an embodiment of an outboard motor equipped with a reverse lock mechanism of the present invention, and Fig. 2 is a partially cutaway side view showing the reverse lock mechanism of an embodiment of the present invention. be. DESCRIPTION OF SYMBOLS 1... Swivel bracket, 2... Propulsion blade, 3... Drive part, 4... Engine part, 5... Protrusion part, 6...Axis, 7.
...Stern bracket lock hook mechanism, 9.
...Tatsukook, 10...First engagement slit, 11...Second locking slit, 12.
...Pivot pin, 13...Lower spring hook pin, 14...Dobe spring hook pin, 15...
Lock spring, 16... Engaging portion, 17...
・Tilt lever, 16... Thrust receiver, 19... Link plate, 20...
Link pin, 21...Reverse lock lever-1
22...Tatsukuri link, 23...Finger rest, 24...Connection pin.

Claims (1)

[Scope of utility model registration request] A swivel bracket 1 equipped with a propeller blade and a driving part for an engine 4 that drives the blade is pivoted on a stern bracket 7 attached to the hull by a pin shaft 6, and the swivel bracket 1 is moved rearward about the shaft 6. In an outboard motor that is designed to be tilted up, a lock hook 9 having a vertically long first engagement slit 10 at the base and a horizontally long arc-shaped second engagement slit 11 in the front-rear direction above the lock hook 9 is attached to a swivel bracket. The first engagement slit 10 is engaged with the pivot pin 12 provided in the first part, so that the first engagement slit 10 can be raised and lowered relative to the pin 12, and the second A lower spring hook pin 13 is slidably fitted into the locking slit 11 of the swivel bracket 1, and a lock hook 9 is inserted between the pin 13 and the swivel bracket 1 so that the lock hook 9 can rotate clockwise around the pivot pin 12. A tilting lever is provided on a stern bracket 7, and a locking spring 15 is provided to urge the locking hook 9 to rotate in a direction. 1
7, and a connecting pin 24 provided on a lock hook 9 is connected to a reverse lock lever 21 via a link 22 and a link plate 19. mechanism.