JPH0948394A - Propulsion nozzle driving device and input/output conversion mechanism for small ship device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a propulsion nozzle driving device enabling an fluctuation angle of a propulsion nozzle to be changed provided in a small ship device by grip lever part quickly and surely. SOLUTION: A propulsion nozzle driving device is equipped with a propelling nozzle 5 provided in a rear of a hull in such a way to be fluctuant freely in the vertical direction and produced the propelling power by injecting water behind the hull, wire cables 25, 26 connected with the propulsion nozzle 5, and a grip lever part 10' fluctuating and driving the propulsion nozzle 5 by driving the wire cables 25, 26. Therefore, an input/output conversion mechanism 29 which is fixed to the hull is provided between the wire cables 25 and 26, and the conversion mechanism 29 outputs the input from the grip lever part 10 to the propelling nozzle 5 but does not output the input from the propulsion nozzle 5 to the grip lever 10'.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small boat device (watercraft) equipped with a jet propulsion device, and more particularly to a propulsion nozzle drive device for operating the vertical swinging angle of the propulsion nozzle.

[0002]

2. Description of the Related Art Among small boats, there is a horse-riding leisure boat called a watercraft. This watercraft has a structure as shown in FIG.
A propulsion device 2 provided at the rear of the hull 1, a seat 3 (seat) provided on the hull 1, and a control unit 4 provided in front of the seat 3.

The propulsion device 2 includes an engine (not shown) housed in the lower portion of the seat 3, a pump (not shown) that operates by the engine and sucks seawater, and water (seawater) compressed by the pump behind the hull 1. And a propulsion nozzle 5 for ejecting to.

The steering section 4 also has a steering section 6 for steering, and a display section 7 provided on the steering section 6 for displaying an operating state. The steering section 6 includes a main body 8 rotatably provided, and the main body 8
It has a right grip lever portion 9 and a left grip lever portion 10 attached to each other. Of these, the right grip lever 9
Is a throttle lever for adjusting the output of the engine.

That is, the operator rides on the seat 3 and operates a lever provided on the right grip lever portion 9 to adjust the output of the engine while propelling the watercraft. Is able to.

[0006] By the way, there is a model of the above-described watercraft which is constructed so that the vertical inclination of the propulsion nozzle 5 can be adjusted during operation. This is to obtain the hull attitude according to the traveling state.

For example, at the start of traveling, the propulsion nozzle 5 is directed downward (DOWN state), and when the speed increases, the propulsion nozzle 5 is directed upward (UP state). As a result, the nose of the hull 1 can be increased, the water contact area can be reduced, and the running resistance can be reduced.

When turning, on the contrary, the propulsion nozzle 5
By making the DOWN state, stable and safe turning can be performed. The angle of the propulsion nozzle 5 is generally adjusted by turning the grip of the left grip lever portion 10.

That is, in this model, the left grip lever portion 10 and the propulsion nozzle 5 are connected via the wire cable 11 routed as shown by the dotted line in FIG. 14, and the grip is turned. As a result, the cable 11 is pushed and pulled, whereby the nozzle 5 is rotated.

FIG. 12 shows a conventional left grip lever portion 10.
Is an enlarged view of. This left clip lever part 1
Reference numeral 0 denotes a rod-shaped lever 12 fixed to the steering body 8 side, a guide tube 13 rotatably inserted in the lever 12, and an end portion of the guide tube 13 on the steering body 8 side integrally. Pulley 14 protruding
And a housing 15 fixed to the lever 12 and covering the pulley 14, and a grip 16 integrally fixed to the outer surface of the guide tube 13.

At a predetermined portion in the circumferential direction of the pulley 14, the wire cable 1 connected to the nozzle 5 side.
One end of the wire cable 11 is fixed, and the wire cable 11 is wound around the pulley 14. The wire cable 11 extends from the housing 15 and is connected to the propulsion nozzle 5 side.

Therefore, by rotating the grip 16, the pulley 14 can be rotated through the guide tube 13, and thus the wire cable 11 is wound around the pulley 14. As a result, the wire cable 11 is pulled, and the propulsion nozzle 5 can be driven to swing.

By the way, the inclination of the propulsion nozzle 5 must be adjusted in at least three stages. That is, FIG.
Nozzle neutral (NEUTRAL)
State, the state of the nozzle UP, and the state of the nozzle DOWN.

Further, during traveling, a restoring force (reaction force) acts on the propulsion nozzle 5 due to the thrust when water is ejected. Therefore, in order to hold the propulsion nozzle 5 at each position of NEUTRAL, UP and DOWN, A means for restricting the movement of the wire cable 11 is required. For this reason, the left grip lever portion 10 is provided with a lock mechanism indicated by 18 in FIG.

The lock mechanism 18 is provided in the housing 1 described above.
5 and an engaging body 20 provided on the outer surface of the grip 16. FIG. 13 is an enlarged view of the lock mechanism 18.

As shown in FIG. 13 (a), the engaging groove 1 is formed.
Reference numeral 9 is provided on the surface of the housing 15 facing the grip 16, and is provided with a circumferential groove 19a provided along the circumferential direction and an engaged member extending inward from the circumferential groove 19a. It is composed of a groove 19b. This engaged groove 19b
Are the three positions described above (UP, NEUTRA
L, DOWN) are provided in the circumferential direction at predetermined intervals.

On the other hand, the engaging body 20 is rotatably attached to a rotary shaft 21 shown in the drawing. Further, the engagement body 20 is biased in the direction shown by the arrow in the drawing by the torsion spring 22 externally fitted to the rotary shaft 21, so that the tip portion 20a can be positioned in the engaged groove 19b. It has become.

As a result, the tip portion 20 of the engaging body 20 is
The a and the engaged grooves 19b engage with each other in the circumferential direction so that the predetermined position described above (UP position in the figure) can be maintained.

On the other hand, the engagement body 20 is provided with a release button 20b shown in the drawing, and the operator grasps the release button 20b with an index finger, for example.
The engaging body 20 can be driven as shown by a dotted arrow in FIG. 7 (b).

As a result, the tip portion 20a of the engaging body 20 can be retracted from the engaged groove 19b and the engaged state can be canceled. Therefore, in this state, the tilt angle of the propulsion nozzle 5 can be changed by turning the grip 16.

Further, when the tip 20a of the engaging body 20 is positioned at a desired position and then the release button 20b is released, the tip 20a can be repositioned in the engaged groove 19b. The wire 11 can be locked.

[0022]

By the way, the above-mentioned conventional lock mechanism 18 has the following problems to be solved. First, in the conventional lock mechanism 18, there is no "moderation" when switching (positioning) to each position, and the feeling is bad.

That is, in the lock mechanism 18, when the release button 20b is grasped and positioned, U
Positioning of P and DOWN to each position can be performed accurately by turning the grip 16 fully, but NEUTRL
There is a case where positioning to a position cannot be performed unless the user confirms by looking at the display section because a feeling of moderation (feeling) cannot be obtained.

Secondly, in the above mechanism, it is possible to set only 3 positions (UP, NEUTRAL, DOWN) at the maximum, and the degree of freedom of switching is small. That is, in the mechanism, when locked, the tip end portion 20a of the engaging body 20 and the engaged groove 19b are circumferentially engaged with each other to hold each position. However, the housing 15 is made of resin as described above, and in order to withstand the restoring force of the propulsion nozzle 5, the ribs (indicated by 23 in FIG. 13) between the engaged grooves 19b have a certain thickness. Need to thicken.

Therefore, due to space limitations, only three positions can be provided in the circumferential direction as described above even at the maximum. Further, as described above, with this mechanism, the feeling of moderation can be obtained only during UP and DOWN, and the feeling of moderation cannot be obtained during that time. It was the limit.

The present invention has been made in view of the above circumstances, and has a propulsion nozzle driving device that provides a moderation feeling when switching the propulsion nozzle angle and that enables a finer position setting. It is intended to provide.

[0027]

A first means of the present invention is a propulsion nozzle which is provided at a rear portion of a hull so as to be vertically swingable and which generates thrust by ejecting water to the rear of the hull. In a propulsion nozzle drive device of a small boat device having a grip lever portion connected to the propulsion nozzle and swingably driving the propulsion nozzle, an input / output fixed to the hull is provided between the propulsion nozzle and the grip lever portion. A conversion mechanism is provided, and this input / output conversion mechanism converts the input from the grip lever portion to the propulsion nozzle side and outputs it, but does not output the input from the propulsion nozzle side to the grip lever portion side. It is a characteristic propulsion nozzle drive device.

A second means is the propulsion nozzle drive device of the first means, wherein the grip lever portion is provided on a lever body and rotatably mounted on the lever body, and is rotationally driven to perform the input / output conversion. Propulsion characterized by having a grip capable of inputting to the mechanism and detent means for imparting a moderation to the rotation of the grip when the grip passes a predetermined position corresponding to the rotation angle position of the propulsion nozzle. It is a nozzle drive device.

A third means is the propulsion nozzle drive device of the second means, wherein the detent means is a base member fixed to a surface of the lever body facing the grip.
A plurality of holes provided in the base member at intervals corresponding to the predetermined rotation angle position, and movably held in the grip in a direction of coming into contact with and separating from the base member, and the grip being rotationally driven. In addition, the propulsion nozzle drive device is characterized in that it has a locking body that sequentially faces each of the holes, and a biasing means that elastically biases the locking body with respect to the base member.

A fourth means is the propulsion nozzle driving device of the first means, wherein the input / output conversion mechanism is provided on a base fixed to the hull side and rotatably provided on the base, and on the grip lever part side. Between the input side rotating body connected to the input side rotating body, the output side rotating body coaxially connected to the input side rotating body and connected to the propulsion nozzle side, and between the input side rotating body and the output side rotating body. When the input side rotary body receives an input, the input side rotary body pushes against the output side rotary body to transmit power to the output side rotary body and input from the output side rotary body. If there is, a propelling nozzle drive device characterized in that it has a power transmission body that is pressed against the base side by the output side rotating body and automatically stops between itself and the base side.

A fifth means is, in the propulsion nozzle driving device of the fourth means, the power transmission body is a roller that is in rolling contact with the base body side, and the output side rotation body is at an angle that automatically stops the roller. It is a propulsion nozzle drive device having an inclined surface which abuts.

A sixth means is the propulsion nozzle driving device according to the fourth means, wherein the input / output conversion mechanism has an urging means for urging the power transmission body toward the base body. It is a conversion mechanism.

A seventh means is an input / output conversion mechanism for converting and outputting an input force, a base body, an input side rotating body rotatably provided on the base body and connected to an input side, and an input side rotating body. The input side rotary body is provided between the input side rotary body and the output side rotary body, which is rotatably coaxial with the side rotary body and is connected to the output side, and the input side rotary body has an input. If the input side rotary body is pressed against the output side rotary body, the output side rotary body is rotated integrally with the input side rotary body, and if there is an input from the output side rotary body, An input / output conversion mechanism comprising: a power transmission body that is automatically stopped between itself and the base body side by being pressed against the base body side by an output side rotating body.

The eighth means is, in the input / output conversion mechanism of the seventh means, the power transmission body is a roller that is in rolling contact with the base body side, and the output side rotation body is at an angle that automatically stops with this roller. An input / output conversion mechanism having an abutting inclined surface.

The ninth means is the input / output conversion mechanism of the seventh means, characterized in that it has an urging means for urging the power transmission body toward the base body. According to the first means, the propulsion nozzle can be rockably driven by turning the grip. Further, when the grip drive is released, the input / output conversion mechanism can lock the propulsion nozzle at that angle.

According to the second and third means, when switching the rotation angle position, the detent means can provide a detent feeling, so that the positioning can be appropriately performed at any rotation angle position.

According to the fourth and fifth means, the propulsion nozzle can be locked automatically by the input / output conversion mechanism, so that there is an effect that the locking can be surely performed at an arbitrary angle.

According to the sixth means, the base body, the power transmission body,
If there is a gap between the input side rotating body and the input side rotating body, the power transmission body can be brought into contact with the base body, so that switching to the lock can be performed quickly.

According to the seventh and eighth means, it is possible to obtain a conversion mechanism capable of transmitting power from the input side to the output side but restricting (locking) the transmission of power in the opposite direction. Since the power transmission is regulated by automatic stop, the lock position can be adjusted steplessly and a strong lock can be achieved.

According to the ninth means, the base body, the power transmission body,
If there is a gap between the input side rotating body and the input side rotating body, the power transmission body can be brought into contact with the base body, so that switching to the lock can be performed quickly.

[0041]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. The present invention relates to the improvement of the driving device for the propulsion nozzle of the above-described watercraft (small boat device). Therefore, the same reference numerals are used for the other components of the watercraft described in the section of the related art, and the description thereof will be omitted.

First, a first embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. FIG. 3 shows a drive device for the propulsion nozzle in this embodiment. In this figure, 10 'is the left grip lever portion, and 5 is the rotary shaft 2 provided at the rear of the hull 1.
The propulsion nozzle rotatably (swingably) held by 6.

Two first wire cables 25 are led out from the left grip lever portion 10 '. This first
The wire cable 25 of the left grip lever portion 10 is
It is wound around a pulley provided inside ´ and grip 1
When 6 is turned, either one is on the pulling side.

On the other hand, a second wire cable 27 is connected to the propulsion nozzle 5. By pushing and pulling the second wire cable 27, the propulsion nozzle 5
The angle is adjusted.

The two first wire cables 25 and the second wire cables 27 are connected via a conversion mechanism (input / output conversion mechanism) 29 shown in the drawing. That is, the conversion mechanism 29 is the same as that of the left grip lever unit 10.
The pulling force applied to one of the two first wire cables 25 from ‘′ is converted into a push-pull force and transmitted to the second wire cable 27.

As will be described later, this conversion mechanism 29
Is configured to transmit force in the direction from the first wire cable 25 to the second wire cable 27, but not to transmit force in the direction from the second wire cable 27 to the first wire cable 25. There is. Therefore, the conversion mechanism 29 has a function of locking the posture of the propulsion nozzle 5.

Next, each component will be described in detail. First, the structure of the left grip lever portion 10 'will be described with reference to FIGS.

The basic structure of the left grip lever portion 10 'is substantially the same as the structure described in the section of the conventional example. That is, as shown in FIG. 2A, the left clip lever portion 10 ′ is a lever 1 fixed to the steering body 8 side.
2, a guide tube 13 rotatably inserted into the lever 12, and a pulley 14 integrally formed at an end of the guide tube 13 on the steering body 8 side.
And a housing 15 fixed to the lever 12 and covering the pulley 14, and a grip 16 integrally fixed to the outer surface of the guide tube 13.

The ends of the two first wire cables 25 are fixed to predetermined portions in the circumferential direction of the pulley 14, and each wire cable 25 is wound around the pulley 14. Therefore, the grip 16
The pulley 14 can be rotated via the guide tube 13 by rotating, and one of the two first wire cables 25 is wound around the pulley 14.

As a result, one of the two first wire cables 25 becomes the pulling side, the pulling force is transmitted to the converting mechanism 29, and the second wire cable 27 is used to transmit the pulling force. The propulsion nozzle 5 is adapted to perform an angle switching operation.

Unlike the conventional grip lever portion 10 shown in FIG. 12, the grip lever portion 10 'is not provided with a locking means. Instead, a detent mechanism is provided to give a sense of moderation in angle adjustment. Next, this detent mechanism will be described.

This detent mechanism is shown in FIG.
As shown by, it is provided at the boundary between the grip 16 and the housing 15. This mechanism is fixed to the surface of the housing 15 facing the grip 16, and as shown in FIG. 2B, a plurality of through holes 32a are formed at predetermined intervals in the circumferential direction. And Fig. 2
As shown in (a), the through hole 32 a of the base member 32.
A metal sphere 33 (engagement body) that engages with, a holding hole 34 that is provided in the collar portion 16a of the grip 16 and holds the sphere 33, and a holding hole 34 that is provided in the holding hole 34. A leaf spring 35 that urges the base member 32 side.
(Biasing means).

As shown in FIG. 2B, the base member 32 is a strip-shaped member formed of metal such as stainless steel, and is fixed to the resin housing 15 by adhesion, for example. . Further, five through holes 32a provided in the base member 32 are formed on the same circumference centering on the rotation axis of the grip 16 at, for example, 15 ° intervals in the circumferential direction.

The through holes 32a are provided at positions (UP1 and UP shown in FIG. 1) corresponding to the inclination angle of the propulsion nozzle 5.
2, NEUTRAL, DOWN1, DOWN2).

On the other hand, the holding hole 34 provided in the collar portion 16a of the grip 16 is provided at a position corresponding to each through hole 32a, as shown in FIG. 2 (c). Therefore, by turning the grip 16, the holding hole 3
The spherical body 33 held in the space 4 is arranged so as to sequentially face the through holes 32 a of the base member 32.

The holding hole 34 has an inner diameter slightly larger than the diameter of the spherical body 33, and holds the spherical body 33 movably in the direction of contacting with and separating from the base member 32. On the other hand, the urging force of the leaf spring 35 pushes the sphere 33 into the through hole 32a when the sphere 33 coincides with the through hole 32a of the base member 32, but the pilot applies a little force. When the grip 16 is turned, the sphere 33 is set to a size that allows the sphere 33 to escape from the through hole 32a.

In other words, when the grip 16 is turned, the spherical body 33 is formed in the through hole 32a adjacent to the upper side of the base member 32.
The leaf spring 35 bends in a direction away from the housing 15 by riding on a portion between them. When the spherical body 33 again faces the through hole 32a of the base member 32, the spherical body 33 is fitted into the through hole 32a by the biasing force of the leaf spring 35.

When the spherical body 33 is fitted in the through hole 32a, the impact at that time is transmitted to the grip 16 held by the operator through the leaf spring 35. There is also a clicking sound when it is fitted.

Therefore, with such a detent mechanism, the operator can obtain a feeling of moderation, and the grip 16 (propulsion nozzle 5) is moved to any position (UP).
2, UP1, NEUTRAL, DOWN1, DOWN
It is possible to reliably position in 2). The locking of the propulsion nozzle 5 at each position (UP2 to DOWN2) is performed by the conversion mechanism 29 (see FIG. 1) described next.

Next, the conversion mechanism 29 will be described by enlarging it in FIGS. Reference numeral 37 in FIG. 3A is a bracket which is fixed to the hull 1 side and holds the conversion mechanism 29. This conversion mechanism 29 is shown in FIG.
7 is a view seen from one surface side of FIG. 7, and FIG.
FIG. 9 is a view of 9 viewed from the other surface side of the bracket 37. Also,
FIG. 3B shows II in FIG. 3A or FIG.
FIG. 4 is a vertical sectional view taken along the line I-III in FIG.
FIG. 4 is a cross-sectional view taken along the line IV-IV.

As shown in FIG. 3B, a pan-shaped housing 38 having a peripheral wall 38a is fixed to one surface of the bracket 37 by means of rivets or the like. A central support shaft 39 is erected inside the housing 38, and an input side rotating body shown by 40 in the drawing is rotatably attached to the central support shaft 39 so as to close the housing 38.

In the bracket 37, as shown in FIG.
An output side rotating body indicated by 41 in FIG. 4B and FIG. 4 is also rotatably attached to the central support shaft 39. Further, a roller 42 (power transmission body) for transmitting the driving force input to the input side rotary body 40 to the output side rotary body 41 is provided on the outer side in the radial direction of the output side rotary body 41 in the circumferential direction. 90
Four are arranged at intervals. And this roller 42
4, is urged in a direction in which it is pressed against the peripheral wall 38a of the housing 38 by a ring-shaped spring 43 (power transmission body urging means) attached to the input side rotating body 40. .

Next, the central support shaft 39, which will be described in detail with respect to the configuration and operation of each component constituting the conversion mechanism 29, has the first supporting shaft 40 for supporting the input side rotating body 40, as shown in FIG. 3B. Of the bracket 37 and a second support portion 39b for supporting the output side rotating body 41.
It is integrally fixed to the bracket 37 and the housing 38 by a bolt 45 inserted from the other surface side. The first support portion 39a is formed to have a larger diameter than the second support portion 39b in order to regulate the position of the output side rotating body 41. Further, a plate 46 for restricting the position of the input side rotating body 40 is fixed to the projecting end portion of the bolt 45.

On the other hand, the input side rotating body 40 is shown in FIG.
As shown in (a) and (b), a disk-shaped base body 48 externally fitted to the first support surface 39a of the central support shaft 39,
The base 48 is provided with four driving pieces 49 for projecting on the outer edge of one surface facing the inside of the housing 38 and driving the roller 42.

As shown in the cross-sectional view of FIG. 4, the driving pieces 49 are circular when the rollers 42 are in contact with the peripheral wall 38a of the housing 38 between the driving pieces 49. They are provided at intervals of 90 ° via a space part that allows a slight movement in the circumferential direction (amount of play). The end surface of each drive piece 49 along the circumferential direction serves as a cam surface 49a for driving the roller 42. That is,
The end surface 49a of the driving piece 49 is an inclined surface as shown in FIG. 9, and when the input side rotating body 40 rotates a little, it comes into contact with the outer peripheral surface of the roller 42, and the cam surface 49a So that it goes under the roller 42,
The roller 42 is biased in a direction in which the roller 42 is separated from the peripheral wall 38a of the housing 38.

On the other hand, as shown in FIG. 3A, on the outer surface of the input side rotating body 40, there are two first wire cables 25 each having a guide tube held at one end of the bracket 37. It is connected. That is, the input side rotating body 40 is rotationally driven by turning the grip 16 of the left grip lever portion 10 'and pulling one of the two first wire cables 25. .

Next, the output side rotating body 41 will be described. The output side rotating body 41 is arranged inside the drive piece 49 as shown in FIG. 3B or 4. The output side rotating body 41 is rotatably fitted to the second holding portion 39b of the central support shaft 39 as shown in FIG. 3 (b), and the four rollers 42 are provided as shown in FIG. A v-shaped receiving surface 50 for holding the roller 42 is provided at a position opposed to.

Next, the shape of the v-shaped receiving surface 50 will be described. In FIG. 5, the roller 42 is in contact with the inner surface of the peripheral wall 38a of the housing 38, and the center line (a) passing through these contact points and the center o of the roller 42 is v
It shows a state (neutral state) that coincides with the apex of the character receiving surface 50. In this state, as shown in the figure, a slight gap is formed between the receiving surface 50 and the roller 42. It should be noted that, as will be described later, this mechanism functions even when there is no gap.

On the other hand, FIG. 6 shows a state in which the output side rotating body 41 is slightly rotated in the direction indicated by the arrow in the drawing, and a part of the receiving surface 50 is brought into contact with the outer peripheral surface of the roller 42. It is a thing. The inclination angle θ of the receiving surface 50 at this time is “automatic stop (mechanics, application) in relation to the friction coefficient μ between the output side rotating body 41 and the roller 42 and the friction coefficient μ ′ between the roller 42 and the housing 38. It is set to the size of "(Mechanical term)". This angle can be obtained by drawing.

That is, as shown in FIG. 7, when the force applied from the v-shaped receiving surface 50 to the roller 42 by the torque T input to the output side rotating body 41 is F, the force F causes the roller 42 to move. It suffices that the frictional force μ ′ · N (N is the vertical drag) generated between the housing 38 and the housing 38 is always larger than the force F (equation (1) shown in FIG. 7).

The normal force N is obtained from the drawing shown in FIG. 8 (equation (2) shown in FIG. 8). Therefore, the angle θ is obtained by substituting the equation (2) into the equation (1).
It suffices if the formula (3) shown in FIG. 8 is satisfied.

When such an angle θ is set, the frictional force F generated between the housing 38 and the roller 42 is always larger than the force F regardless of the magnitude of the force F applied from the output side rotating body 41 to the roller 42. Because it gets bigger, this roller 4
2 does not move (automatic stop). Therefore, when an external force is input from the output side rotator 41 side, the output side rotator 41 cannot be rotationally driven even if the force is smaller than the following. .

The opening angle of the v-shaped receiving surface 50 (θ'in FIG. 5) can be easily calculated from the gap amount between the roller 42 and the receiving surface 50 in FIG. 5 and the angle θ. You can

On the other hand, as shown in FIGS. 3B and 3C, the arm 53 is provided on the other surface side of the bracket 37.
Is provided. The arm 53 is connected to the output side rotating body 41 by three bolts indicated by 51 in the figure. These three bolts 51 are respectively arranged through three slits 54 penetrating the housing 38 and the bracket 37. Therefore, the rotation angle of the output side rotation body 41 is regulated by the length (angle range) of the slit 54. That is, the angular range of the slit 54 is the swing range of the propulsion nozzle 5 (about 30 ° in this embodiment).
Is set to correspond to.

The swing wire end of the arm 53 is connected to the second wire cable 27 in which a guide tube is held at the other end of the bracket 37. That is, when the output side rotator 41 is driven to rotate, the second wire cable 27 can be pushed and pulled via the arm 53. The lever ratio of the arm 53 is adjusted so that the angular position of the grip 16 (FIG. 2B) corresponds to the angular position of the propulsion nozzle 5 (FIG. 1).

Next, the operation of the converting mechanism 29 will be described together with the operation of adjusting the angle of the propulsion nozzle 5. In the initial state, the grip 16 is the NE shown in FIG.
In the UTRAL position, the propulsion nozzle 5 is adjusted to the neutral position shown in FIG. At this time, the spherical body 33 held in the collar portion 16a of the grip 16 is fitted in the through hole 32a provided in the central portion of the base member 32.

Next, the operation of adjusting the angle of the propulsion nozzle 5 to the state of UP2 from this state will be described. For this purpose, the grip 16 is rotated with a little force on the front side. As a result, the spherical body 33 is pushed up by the edge portion of the through hole 32a, and escapes from the through hole 32a against the biasing force of the leaf spring 35.

On the other hand, when the grip 16 is driven to rotate, the one first wire cable 25 is pulled, and accordingly, the input side rotating body 40 of the converting mechanism 29 starts to rotate. As a result, as shown in FIG. 9, the cam surface 49a formed on the end surface of the driving piece 49 of the input side rotating body 40 enters the outside of the roller 42 and the roller 4
2 is urged toward the output side rotating body 41 side. In this embodiment, the roller 42 and the output side rotating body 4 are
Since there is a slight gap between the roller 42 and the first receiving surface, the roller 42 moves in the direction of the output side rotating body 41 by the amount of this gap and fits on the v-shaped receiving surface 50 of the output side rotating body 41. It is pushed in tightly. As a result, the input side rotator 40 and the output side rotator 41 are integrated via the roller 42, and the output side rotator 41 rotates together with the input side rotator 40. Therefore, the force input to the input side rotating body 40 is output to the second wire cable 27 through the output side rotating body 41.

When the grip 16 is further rotated, the sphere 33 passes the position of Up1, so that the operator
The impact (detent feeling) when the spherical body 33 passes through the through hole 32a provided at this position can be sensed. Therefore, the operator can stop the grip 16 at the UP2 position by stopping the rotation of the grip 16 at the position where the driver feels the detent. As a result, the propulsion nozzle 5 is also located at the position of UP2.

Then, when the operator weakens the force applied to the grip 16, the propulsion nozzle 5 tries to return to the neutral state by the restoring force (reaction force) by the propulsion force. However, at this time, the automatic stop of the conversion mechanism 29 described above functions and the return is regulated.

That is, when the force applied to the input side rotating body 40 is weakened, the force pushing the roller 42 inward until then disappears, so that the urging force of the ring-shaped spring 43 shown in FIG. The inner wall surface 3 of the housing 38 is pushed out to the outside of the roller 42 as shown in FIG.
It is pressed against 8a.

On the other hand, when the propulsion nozzle 5 tries to return to the neutral position, the force is input to the output side rotating body 41, and the output side rotating body 41 tries to rotate. However, at this time, when the output side rotator 41 rotates a little, the automatic stop (see FIG. 6) is applied as described above. As a result, the output side rotating body 41 is locked. Therefore, the operation can be continued in the state of UP2.

On the other hand, when returning the propulsion nozzle 5 to the neutral position, the operator rotates the grip 16 to the depth side. As a result, the first wire cable 25 located on the side opposite to the UP direction is pulled, and the rotational force in that direction is input to the input side rotating body 40. With this,
The cam surface 49 of the drive piece 49 located on the opposite side of FIG.
The roller 42 is urged by a.
Fits into the v-shaped receiving surface 50. Therefore, the output side rotator 41 can rotate integrally with the input side rotator 40, and the lock is released.

Therefore, the operator can position and lock the angle of the propulsion nozzle 50 by rotating the grip 16 based on the detent feeling.
With such a configuration, the effects described below can be obtained.

First, since a "moderate feeling" can be obtained when the grip 16 is turned, the propulsion nozzle 5
The effect is that the angle can be adjusted accurately and quickly. That is, in the conventional product, it was not possible to obtain a moderation feeling at the time of switching, and therefore it was necessary to check the display unit 7 (see FIG. 8) each time when switching.

In particular, when there are five switching positions as in the first embodiment, there is a possibility that the adjacent position may pass without being recognized unless the grip is turned while looking at the display section 7. It was Therefore, it takes time (time) to switch the angle of the propulsion nozzle 5,
There was a case where the degree of concentration on driving decreased.

However, according to the present invention, the detent mechanism 31 is provided in the left grip lever portion 10 ',
A sense of detent can be obtained by the impact or sound when the sphere 33 passes through the through hole 32a (predetermined rotation angle position) of the base member 32. Therefore, even if the display unit 7 is not viewed, the grip 16
You can see exactly how many positions you have turned.

Due to the above, the angle of the propulsion nozzle 5 can be switched and the positioning can be surely performed without looking at the display unit 7, so that the angle of the propulsion nozzle 5 can be adjusted while concentrating on the operation. There is an effect that can be done properly and quickly.

Secondly, there is an effect that the grip lever portion 10 'of the driving device for the propulsion nozzle can be made compact. That is, in the conventional device, the grip lever portion 10 is provided with a locking mechanism, and the grip lever portion 10 receives the restoring force of the propulsion nozzle 5. Therefore, the grip lever portion 10 needs to have a structure for receiving the restoring force, and also needs strength, so that the grip lever portion 10 sometimes becomes large.

However, in the present invention, the means for locking is not provided in the grip lever portion 10 ', but
The conversion mechanism 29 is provided. Therefore, since it is not necessary to provide a mechanism for locking the grip lever portion 10 ', the number of parts of the grip portion 10' can be reduced correspondingly, and the grip lever portion 10 'can be compactly constructed. is there.

Thirdly, since the converting mechanism 29 is provided with the locking mechanism as described above, the grip lever portion 10
It is not necessary to receive the restoring force of the propulsion nozzle 5 at ‘. Therefore, there is an effect that the durability of the grip lever portion 10 'is increased.

That is, the conventional product (FIG. 13) has the engaging groove 19b integrally formed with the housing 15 in order to support the reaction force from the propulsion nozzle 5, as described above.
However, with such a configuration, the grip lever portion 1
Since the space of 0 is limited, a sufficient thickness cannot be obtained between the engaging grooves 19b, which may result in poor durability.

However, in the present invention, the above-mentioned propulsion nozzle 5
Since the converting mechanism 29 receives the restoring force of No. 2, there is no such problem, and the durability of the grip lever portion 10 'can be improved.

In the conventional structure, the propulsion nozzle 5 is
If the propulsion force of the above is very large, the restoring force of the propulsion nozzle 5 due to the propulsion reaction force is input to the left grip lever portion 10 at the moment when the throttle is opened and the steering wheel is taken off, which may affect the steerability. .

However, in the present invention, because of the above-mentioned configuration, there is no such problem, and there is an effect that stable steering can be performed. Fourthly, there is an effect that the angle of the propulsion nozzle 5 can be switched in multiple stages.

That is, in the conventional switching device, the engaged groove 19b is provided in order to secure the strength when the propulsion nozzle 5 is locked.
It was necessary to increase the thickness of the ribs 23 between them considerably. Therefore, due to space limitations, UP, DOWN, NEU
There were times when only three levels of TRAL could be secured.

However, according to the present invention, the conversion mechanism 29 is provided with the lock function, and the mechanism 29 can be locked at any position by the automatic stop function. Therefore, a large number of switching positions can be provided on the grip lever portion 10 'side. Therefore, the propulsion nozzle 5 can be switched to a multistage position (five positions in this embodiment) as compared with the conventional case.

Further, since the detent mechanism can provide a feeling of moderation, even if such multi-stage positions are provided, the positioning for each position can be surely performed.

As a result, the degree of freedom in changing the angle of the propulsion nozzle 5 is increased, and there is an effect that it is possible to realize better driving with a high degree of leisure. Fifth,
According to the conversion mechanism 29 of the present invention, it is possible to obtain a stepless position adjusting mechanism that exhibits a high locking force with a simple structure.

That is, in the conversion mechanism 29 of the present invention, the roller 42 is interposed between the input side rotating body 40 and the output side rotating body 41, and when the input side rotating body 40 receives an input, the roller 42 is inserted. Is urged in a direction away from the housing 38 and pressed against the output side rotating body 41 so that the output side rotating body can be rotationally driven integrally with the input side rotating body. On the other hand, when an input is made to the output side rotating body 41, the roller 42 is pressed against the housing 38 by the output side rotating body 41 so as to automatically stop.

Therefore, with only the above three components,
A conversion mechanism 2 capable of freely rotating and driving from the input side and restricting (locking) rotation against the input from the output side.
9 can be realized. Moreover, the means for this lock is
Since it uses an automatic stop, its locking force is very high and it can be locked at any position.

Further, since the converting mechanism 29 does not engage in locking like a claw or an engaging member, the parts are less worn and have durability. Therefore, there is an effect that a highly reliable device can be configured.

Furthermore, since this mechanism has a stepless position adjusting function, it is not necessary to redesign or adjust this converting mechanism 29 even if the number of angle adjusting positions of the propulsion nozzle 5 is changed.

Sixth, by providing the spring 43 for urging the roller 42, there is an effect that drive and lock can be switched quickly. That is, when there is a gap between the roller 42 and the receiving surface 50 as in this embodiment, the roller 42 and the housing 38 are driven during driving.
Since and are separated from each other, there is a possibility that the output side rotating body 41 may rotate by a considerable amount before being locked (automatically stopped).

However, according to this embodiment, when the driving force is released, the roller 42 is instantly pressed against the housing 38 by the biasing force of the spring 43, so that the lock is easily applied. Therefore, there is an effect that switching between driving and locking can be performed quickly.

Next, a second embodiment of the present invention will be described. The conversion mechanism 29 is not limited to the configuration of the first embodiment. Another embodiment of this conversion mechanism will be described below as a second embodiment of the present invention. The other constituent elements of this apparatus are the same as those in the first embodiment, and the description thereof will be omitted.

The conversion mechanism 2 described in the first embodiment.
9 urges the roller 42 in the radial direction of the rotating bodies 40, 41 on the input side and the output side, the direction orthogonal to the first example of this embodiment, that is, It urges each rotating body in the thickness direction. This will be described below.

Reference numeral 56 in FIG. 10 denotes a bracket fixed to the hull. The conversion mechanism 29 'of this embodiment is
It is equipped on one side of this bracket 56, and is shown in FIG.
It has an input side rotating body indicated by and an output side rotating body indicated by 58 in the figure. The rotating bodies 57 and 58 are rotatably provided around a central axis indicated by 59 in the figure, the first wire cable 25 is connected to the input side rotating body 57, and the output side rotating body 58 is connected to the output side rotating body 58. The second wire cable 27 is connected via the arm 60.

FIG. 11A is a plan view showing a state in which the output side rotating body is removed from the mechanism 29.
1 (b) shows this mechanism 29 'as V-V shown in FIG. 11 (a).
FIG. 11 is a vertical cross-sectional view showing a state of being cut along the line.
11C is a vertical sectional view taken along the line VI-VI shown in FIG.

Reference numeral 61 in FIGS. 11A to 11C is a roller. In the first embodiment, the roller 61 is provided so as to come into contact with the outer peripheral wall 38a of the housing 38 and roll, but the roller 61 of the second embodiment has a truncated cone shape as shown in the figure. Is directly contacted with one surface of the bracket 56 and can be rotated around the central axis 59. Next, each component will be described in more detail.

First, the input side rotating body 57 is shown in FIG.
As shown in (a) and (b), a central boss portion 63 externally inserted on the central shaft 59, a disc portion 64 fixed to the boss portion 63, and an upright position on the outer edge of the disc portion 64. The outer peripheral wall portion 65 is formed. Through holes 66, into which the rollers 61 are inserted, are provided in the disc portion 64 at 90 ° intervals in the circumferential direction.

The through hole 66 has a substantially fan shape with the central axis 59 as the apex. The roller 61 is formed to have a width slightly larger than that of the roller 61 so that the roller 61 rattles in the circumferential direction. Further, the disc portion 64 is
As shown in FIG. 11C, the roller 61 is located below the center of the roller 61. This is because when the input side rotating body 57 is driven in the rotation direction, the edge of the through hole 66 is brought into contact with the roller 61 and the roller 61 is moved by the cam effect to the output side rotating body 58 side (upward). This is because it is pressed against.

Further, as shown in FIG. 11A, a ring-shaped spring 67 for urging the roller 61 toward one surface of the bracket 56 is provided on the disc portion 64 of the input side rotating body 57. It is provided. This spring 67
The spring 43 has the same function as that of the spring 43 of the first embodiment, and is a component for quick locking when switching between driving and locking. This spring 67
Are held by the four claws 68 cut and raised in the disc portion 64 of the input side rotating body 57.

Next, the output side rotating body 58 will be described. As shown in FIGS. 11B and 11C, the outer diameter of the output side rotating body 58 is the outer peripheral wall 65 of the input side rotating body 57.
The inner diameter of the outer peripheral wall 65 is smaller than the inner diameter of the outer peripheral wall 65. Then, the output side rotating body 58
The position corresponding to each roller 61 on the lower surface side of FIG.
As shown in FIG. 1 (c), a v-shaped receiving surface 69 for holding the roller 61 is formed.

The inclination angle θ of the v-shaped receiving surface 69 is the same as that in the first embodiment, when the roller 61 is mounted on the bracket 5.
It is set so that one side of 6 is automatically stopped. That is, it suffices that the inclination angle θ satisfies the expression (3) in FIG.

An arm 60 is fixed to the output side rotating body 58 as described above.
The second wire cable 27 is connected to the swinging portion of the arm 60, and the lever ratio of the arm 60 is the same as in the first embodiment when the rotation angle of the grip 16 of the left grip portion 10 'is the above. It must be determined so as to correspond to the swing angle of the propulsion nozzle 5.

It should be noted that the tip end portion of the central shaft 59 has the shape shown in FIG.
As shown in FIGS. 1 (b) and 1 (c), a plate 70 for preventing the input side rotating body 57 and the output side rotating body 58 from coming off is fixed.

With such a configuration, it is possible to achieve almost the same operation as that of the conversion mechanism 29 of the first embodiment.
With such a configuration, it is possible to obtain substantially the same effect as that of the first embodiment.

Further, in the first embodiment, the angle of the v-shaped receiving surface 50 when contacting the roller 42 was changed by the gap between the roller 42 and the v-shaped receiving surface 50. The shape is constant regardless of the gap. Therefore, in this embodiment, the v-shaped receiving surface 69 can be designed very easily.

The present invention is not limited to the above-described embodiment, but can be variously modified without changing the gist of the invention. For example, in the above-described one embodiment, the propulsion nozzle 5 is switched in five stages, but the invention is not limited to this. Further, although the base member 32 is provided with the through holes 32a (hole portions) corresponding to the respective stages, it is not always necessary. For example, taking the first embodiment as an example, the through holes 32a are provided only at the neutral position and the UP2 and DOWN2 positions, and the UP1 and the DOWN1 are provided.
The through hole 32a may not be provided at the position. Alternatively, it may be provided only at the neutral position. That is, according to the present invention, the conversion mechanism 29, 29
Since ′ is a stepless position adjusting mechanism, the propulsion nozzle 5 can be locked at any position.

The conversion mechanisms 29, 29 'are not limited to the first and second embodiments.
In short, a power transmission body (roller) is provided between the input side rotation body and the output side rotation body, and the power is transmitted from the input side rotation body to the output side rotation body through this power transmission body, and the output side rotation body is also rotated. When the power is input from the body, the power transmission body is pressed against the base body so that the power transmission body is locked by automatic stop.

Further, in the above-mentioned one embodiment, the roller 4
Although there was a gap between the No. 2, 61 and the v-shaped receiving surfaces 50, 69, even if there is no gap, the conversion mechanism 29, 2
9'works well. However, in this case, since the rollers 42 and 61 are always in contact with the housing 38 or the bracket 56, the springs 43 and 67 that urge the rollers 42 and 61 against them are unnecessary. . The springs 43 and 67 are unnecessary even when the gap is very small.

Further, the detent mechanism 31 provided on the left grip lever portion 10 'is not limited to the one embodiment. That is, in the above-mentioned one embodiment, the sphere 33 is biased by using the leaf spring 35.
The present invention is not limited to this, and a coil spring may be used. In addition, the sphere 33 and the leaf spring 35
It may be a configuration in which and are integrated. It should be noted that other means may be used as long as the detent feeling can be obtained when the grip 16 is rotated.

[0124]

According to the structure described above, since the grip lever portion is provided with the detent means, a detent feeling can be obtained when the grip is rotated, and the positioning to any rotation angle position can be performed quickly.

Since the propulsion nozzle can be locked by the input / output conversion mechanism provided on the hull side instead of the grip lever portion, the structure of the grip lever portion can be simplified and finer angle switching can be performed. You can

Further, according to the input / output conversion mechanism described above, since the stepless angle adjustment and the automatic stop locking can be performed with a simpler structure, it is reliable and extremely durable. Therefore, there is an effect that a highly reliable operation can be performed.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a first embodiment of the present invention.

2A is a longitudinal sectional view showing the grip lever portion, FIG. 2B is a sectional view taken along line I-I of FIG.
(C) is sectional drawing which follows the II-II line of (a).

3A to 3C are a front view, a cross-sectional view, and a rear view showing the conversion mechanism.

FIG. 4 is a vertical sectional view taken along line IV-IV of FIG.

FIG. 5 is an operation diagram similarly showing an enlarged conversion mechanism.

FIG. 6 is an operation diagram similarly showing the operation of the conversion mechanism at the time of automatic stop.

FIG. 7 is an explanatory view showing conditions for automatic stop in the same manner.

FIG. 8 is an explanatory view showing the balance of forces during automatic stop.

FIG. 9 is an operation diagram showing an operation during power transmission.

FIG. 10 is a front view of a conversion mechanism showing a second embodiment.

FIG. 11 is a plan view and a vertical sectional view showing the conversion mechanism in an enlarged manner.

FIG. 12 is a vertical sectional view showing a conventional example.

FIG. 13A and FIG. 13B are process diagrams showing a grip angle switching process.

FIG. 14 is an external view showing a general watercraft.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hull, 5 ... Propulsion nozzle, 10 '... Grip lever part, 25 ... 1st wire cable, 26 ... 2nd wire cable, 29 ... Conversion mechanism (1st Embodiment), 31 ...
Detent mechanism, 32 ... Base member, 32a ... Through hole (hole), 33 ... Sphere, 35 ... Energizing means, 38 ... Housing (base), 40 ... Input side rotating body, 41 ... Output side rotating body, 42 ... Roller (Power transmission body), 43 ... Spring (biasing means), 29 '... Conversion mechanism (second embodiment),
56 ... Bracket (base), 57 ... Input side rotating body, 58
Output-side rotating body, 61 ... Roller, 67 ... Spring (biasing means).

Claims (9)

[Claims] 1. A propulsion nozzle which is provided at a rear portion of a hull so as to be vertically swingable to generate thrust by ejecting water to the rear of the hull, and is connected to the propulsion nozzle to rock the propulsion nozzle. In a propulsion nozzle drive device for a small boat device having a grip lever portion, an input / output conversion mechanism fixed to the hull is provided between the propulsion nozzle and the grip lever portion. A propulsion nozzle drive device, wherein an input from the grip lever portion is converted to the propulsion nozzle side and output, but an input from the propulsion nozzle side is not output to the grip lever portion side. 2. The propulsion nozzle drive device according to claim 1, wherein the grip lever portion is provided on a lever main body and rotatably provided on the lever main body, and is rotationally driven to input an input to the input / output conversion mechanism. A propulsion nozzle drive device comprising: a grip that can be performed and detent means that imparts a moderation feeling to the rotation of the grip when the grip passes a predetermined position corresponding to a rotation angle position of the propulsion nozzle. 3. The propulsion nozzle drive device according to claim 2, wherein the detent means is a base member fixed to a surface of the lever body facing the grip, and the base member corresponds to the predetermined rotation angle position. A plurality of holes provided at intervals, and a holding body that is movably held in the grip in a direction in which the grip is brought into contact with and separated from the base member, and the grip is rotationally driven to sequentially face the holes. And a propulsion nozzle drive device having an urging means for elastically urging the locking body against the base member. 4. The propulsion nozzle drive device according to claim 1, wherein the input / output conversion mechanism is provided on a base body fixed to a hull side, and is rotatably provided on the base body, and is connected to the grip lever portion side. An input side rotating body, an output side rotating body which is rotatably provided coaxially with the input side rotating body and is connected to the propulsion nozzle side, and is interposed between the input side rotating body and the output side rotating body, When there is an input to the input side rotating body, when the input side rotating body pushes against the output side rotating body to transmit power to the output side rotating body, and when there is an input from the output side rotating body. The propulsion nozzle drive device further comprises a power transmission body which is pressed against the base body side by the output side rotating body and automatically stops between the power transmission body and the base body side. 5. The propulsion nozzle drive device according to claim 4, wherein the power transmission body is a roller that is in rolling contact with the base body side, and the output side rotation body is in contact with the roller at an angle that automatically stops. A propulsion nozzle drive device having an inclined surface. 6. The input / output conversion mechanism according to claim 4, wherein the input / output conversion mechanism has an urging means for urging the power transmission body toward the base body. 7. An input / output conversion mechanism for converting and outputting an input force, a base body, an input side rotating body rotatably provided on the base body, and connected to an input side, and an input side rotating body. When there is an input to the input side rotating body, which is interposed between the output side rotating body which is coaxially rotatably provided and is connected to the output side, and the input side rotating body and the output side rotating body, , While being pressed against the output side rotating body by the input side rotating body to rotate the output side rotating body integrally with the input side rotating body,
When there is an input from the output side rotating body, the output side rotating body pushes against the base side to provide a power transmission body that automatically stops between the base side and the input / output conversion. mechanism. 8. The input / output conversion mechanism according to claim 7, wherein the power transmission body is a roller that is in rolling contact with the base body side, and the output side rotation body is in contact with the roller at an angle that automatically stops. An input / output conversion mechanism having an inclined surface. 9. The input / output conversion mechanism according to claim 7, further comprising urging means for urging the power transmission body toward the base body.