JPH078396Y2 - Outboard motor steering device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a steering device for an outboard motor.

(Prior Art) As shown in the side view of FIG. 5, the outboard motor has an engine (not shown) mounted on an upper portion of a drive shaft housing 1 which is a main body of the outboard motor and is covered with an engine cover 2. ,
A gear case 3 is joined to the lower part of the same, and a propeller shaft 4 is supported by the gear case 3, and a propeller 5 mounted on the propeller shaft 4 receives a rotational force from an engine through a power transmission mechanism in the drive shaft housing 1 and the gear case 3. Is being transmitted.

The drive shaft housing 1 is provided with a swivel bracket 6 and a clamp bracket 7. The clamp bracket 7 is a transom of the hull (stern part)
The swivel shaft 8 is horizontally provided on the clamp bracket 7, and the swivel bracket 6 is rotatably supported on the swivel shaft 8. A pilot shaft 9 is vertically and rotatably supported by the swivel bracket 6, and the drive shaft housing 1 is provided on the pilot shaft 9 so as to rotate integrally.

Therefore, the outboard motor is rotatable about the swivel shaft 8 and at the same time rotatable about the pilot shaft 9, and the steering handle 14 fixed to the drive shaft housing 1 is extended to the hull side. The outboard motor is rotated (steered) to the left or right with respect to the hull by the operation of the operator, and the traveling direction of the hull is changed.

The steering device is configured to have the swivel bracket 6, the pilot shaft 9 and the like, and a steering adjuster 10 as shown in FIG. 6 is used to adjust the steering force (steering operation force) of the outboard motor. Equipped. In this steering adjuster 10, a rotating bush 11 is fixed to the outer periphery of a pilot shaft 9, and a pressing bush 12 attached to the swivel bracket 6 side applies a pressing force to the rotating bush 11 to adjust the steering force. . The magnitude of the pressing force applied to the rotating bush 11 by the pressing bush 12 is adjusted by the tightening force of the bolt 13.

(Problems to be solved by the invention) However, in the conventional steering device, although the steering force can be adjusted by the steering adjuster 10 as described above, in this steering adjuster 10, the steering angle is fixed while the ship is sailing or stopped. And the steering cannot be locked.

In addition, when adjusting the steering force, it is necessary to tighten the bolt 13 to adjust the pressing force of the pressing bush 12 and then actually rotate the steering handle 14 to check the strength of the steering force. Therefore, the adjustment work of the steering force is troublesome.

Further, even if the bolt 13 is strongly tightened to lock the steering of the outboard motor, the rotation bush 11 and the pressing bush 12 are restricted in rotation only by frictional engagement, so that the rotation bush 11 does not have a certain beat. There is a possibility that the steering lock position may change due to a deviation between the pressure bush 12 and the pressing bush 12 or loosening of the bolt 13 due to vibration during operation.

It is an object of the present invention to provide a steering device for an outboard motor that can adjust the steering force and lock the steering wheel with a simple structure and a simple operation, and that does not worry about the steering lock position changing.

[Constitution of device]

(Means for Solving the Problems) In order to achieve the above object, a steering device for an outboard motor according to the present invention includes a clamp bracket fixed to the hull side, a swivel shaft provided on the clamp bracket, and A swivel bracket rotatably supported around the swivel shaft, a pilot shaft rotatably supported by the swivel bracket, and an outboard motor body rotatably integrated with the pilot shaft,
A steering device for an outboard motor, comprising: a steering handle fixed to the outboard motor body to rotate the outboard motor body around the pilot shaft with respect to the swivel bracket. The locking member formed with is fixed to the pilot shaft so as to rotate integrally, and the swivel bracket is attached with a pin member provided so that the amount of advance / retreat can be adjusted toward the corrugated portion of the locking member. The engagement depth between the pin member and the corrugated portion of the locking member is changed by advancing and retracting the pin member, and the steering force for rotating the outboard motor main body is adjusted by the change in the engagement depth, and the outboard motor is also adjusted. The rotation of the machine body can be locked.

(Operation) Therefore, according to the steering device for an outboard motor of the present invention, if the pin member is engaged with the corrugated portion of the locking member shallowly (loosely), the steering can be locked gently and at the same time. The pilot shaft can be rotated with respect to the swivel bracket by an appropriate operating force, and the steering force can be adjusted appropriately.

Also, if the pin member is deeply engaged with the locking member,
The rotation of the pilot shaft is fixed, and the outboard motor main body can be rotated left and right, that is, the steering can be completely locked.

By adjusting the amount of advance / retreat of the pin member in this manner, the steering force can be adjusted quickly and easily, and the steering lock can be achieved. Moreover, when the steering wheel is completely locked, since the locking is performed by the concave-convex engagement instead of the frictional engagement as in the conventional case, there is no concern that the steering lock position changes due to driving vibration or the like.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 4 are views showing an embodiment of a steering device for an outboard motor according to the present invention. In this embodiment, the same parts as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 1, a steering bush 15 is interposed between the swivel bracket 6 and the pilot shaft 9, and the pilot shaft 9 is mounted on the swivel bracket 6 together with the drive shaft housing 1 which is the main body of the outboard motor. It can be rotated left and right.

A locking member 16 is fixed to the upper end of the pilot shaft 9. As shown in FIG. 2, the locking member 16 has a disk shape, and a gear 17 as a corrugated portion that undulates in the circumferential direction of the pilot shaft 9 is formed on the semicircular portion of the locking member 16. In the groove of the gear 17, the grooves 17b at both ends are formed deeper than the grooves 17a in other portions.

On the other hand, as shown in FIG. 1, the swivel bracket 6 is provided with a pin 18, a rod 19 and a lever 20. rod
The pin 18 and the lever 20 are integrally connected to both ends of 19 to form a pin member.

The rod 19 is fitted into the fixing bracket 21 and supported so as to be movable in the axial direction with respect to the swivel bracket 6. Further, the pin 18 is fitted into the bush 22 press-fitted into the swivel bracket 6 and is provided so as to be movable in the axial direction.
The pin 18 has a gear 17 as shown in FIGS.
The pin 18 is configured so that its tip can engage with the grooves 17a and 17b of the gear 17.

As shown in FIG. 4, the lever 20 has positioning grooves 23a, 23b,
23c is formed. The spring plate 24 fixed to the swivel bracket 6 is fitted into any of the positioning grooves 23a, 23b, 23c, and the pin 18 and the rod 19 are positioned. As a result, the amount of advance / retreat of the pin 18 with respect to the gear 17 is adjusted, and the engagement depth between the pin 18 and the grooves 17a, 17b of the gear 17 changes.

Further, the lever 20 is formed with a keyhole 25. This keyhole 25
Is formed so as to face the keyhole 27 provided in the rib 26 of the swivel bracket 6 shown in FIGS. 2 and 3 when the spring plate 24 is fitted in the positioning groove 23c. Reference numeral 28 in FIG. 2 is an insertion hole for the swivel shaft 8.

Next, the operation of the steering device thus configured will be described.

When the lever 20 of the steering device is pulled and the spring plate 24 is fitted into the positioning groove 23a shown in FIG. 4, the tip of the pin 18 does not come into contact with the gear 17, so that the rotation of the pilot shaft 9 with respect to the swivel bracket 6 is prevented. No load is applied, and the steering force of the outboard motor body due to the operation of the steering handle 14 becomes extremely light.

When the lever 20 is pushed in to fit the spring plate 24 into the positioning groove 23b, the tip of the pin 18 engages with the grooves 17a and 17b of the gear 17 to lock the steering, as shown in FIG. For example, a low speed turn is possible. At this time, since the amount of advance of the pin 18 with respect to the gear 17 is small, if the steering handle 14 is operated to rotate the dranibe shaft housing 1 with respect to the swivel bracket 6, the tip of the pin 18 will have a groove 17a, Remove from 17b. In this sense, the steering lock is a loose steering lock. As a result of this loose steering lock, it is possible to avoid an emergency during navigation and improve safe navigation.

Moreover, since the steering wheel can be loosely locked, the groove 23b is set to an appropriate position and the degree of engagement between the pin 18 and the grooves 17a and 17b of the gear 17 is adjusted, so that the amount of resistance during steering operation is increased. The steering operation force can be adjusted.

Next, when trying to turn with the steering wheel 14 fully turned to the left or right when navigating,
20 is further pushed in to fit the spring plate 24 into the positioning groove 23c. At this time, as shown in FIG. 3, since the tip of the pin 18 can be engaged only with the deep groove 17b of the gear 17, even if the steering handle 14 is operated, the drive shaft housing 1 is not swung by the swivel bracket 6.
It cannot rotate horizontally with respect to it and the outboard motor is completely locked in a fully rotated left or right position.

In this way, the steering force of the outboard motor can be quickly adjusted to a predetermined strength or the steering can be locked by a simple operation of pushing or pulling the lever 20, and the adjustment work is very easy. In the case of completely locking the steering, there is no concern that the steering lock position will change due to driving vibration or the like because the locking is performed by the concave and convex engagement instead of the frictional engagement as in the conventional case.
Also, a very simple structure can be realized.

Even when the boat is stopped, turn the steering handle 14 fully to the left or right and then set the spring plate 24 to the positioning groove.
The steering wheel is completely locked when fitted to 23c. At this time, if a commercially available key 29 is further inserted into the key hole 25 of the lever 20 and the key hole 27 of the rib 26, theft can be prevented.

[Effect of device]

As described above, in the steering apparatus for an outboard motor according to the present invention, the locking member having the corrugated portion undulating in the circumferential direction of the pilot shaft is fixed to the pilot shaft so as to rotate integrally with the swivel bracket. Attaching a pin member provided so that the amount of advancement and retraction can be adjusted toward the corrugated portion of the locking member, and changing the engagement depth of the pin member and the corrugated portion of the locking member by advancing and retracting the pin member Since the steering force for rotating the outboard motor body is adjusted by this change in the engagement depth, and the rotation of the outboard motor body can be locked, the steering force can be adjusted with a simple structure and operation. In addition to being able to lock the steering wheel, when locking the steering wheel completely, it is locked by uneven engagement instead of frictional engagement as in the past.
There is no concern that the steering lock position will change due to driving vibration.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of an outboard motor showing an embodiment of a steering device for an outboard motor according to the present invention, and FIG. 2 is II of FIG.
Fig. 3 is a view for explaining the operation corresponding to Fig. 2, Fig. 4 is an enlarged view of IV portion of Fig. 1, Fig. 5 is a side view showing a conventional outboard motor, and Fig. 6 is conventional. Showing the steering adjuster of
FIG. 6 is a sectional view taken along line VI-VI in FIG. 5. 1 ... Drive shaft housing as the outboard motor body, 6 ... Swivel bracket, 7 ... Clamp bracket, 8 ... Swivel shaft, 9 ... Pilot shaft, 14 ... Steering handle, 16 ... Locking member,
17 ... Gears as corrugations, 17a, 17b ... Grooves, 18 ... Pins forming pin members, 19 ... Rods forming pin members, 20 ... Lever forming pin members, 23a, 23b, 23c ...
… Positioning groove, 24 …… Spring plate.

Claims (1)

[Scope of utility model registration request] 1. A clamp bracket fixed to the hull side, a swivel shaft provided on the clamp bracket, a swivel bracket pivotally supported around the swivel shaft, and rotatably attached to the swivel bracket. An axially supported pilot shaft, and an outboard motor body that is provided integrally with the pilot shaft so as to rotate therewith,
A steering device for an outboard motor, comprising: a steering handle fixed to the outboard motor main body to rotate the outboard motor main body around the pilot shaft with respect to the swivel bracket; and a waveform undulating in the circumferential direction of the pilot shaft. The locking member having a portion formed thereon is fixed to the pilot shaft so as to rotate integrally with the swivel bracket, and a pin member provided so that the amount of advance / retreat can be adjusted toward the corrugated portion of the locking member is attached to the swivel bracket. The engaging / disengaging depth between the pin member and the corrugated portion of the locking member is changed by advancing / retreating the pin member, and the steering force for rotating the outboard motor main body is adjusted by the change in the engaging depth, and A steering device for an outboard motor, wherein the rotation of the outer motor body is lockable.