JP3534856B2 - Propulsion nozzle drive for small boat equipment - Google Patents

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 controlling 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 is as shown in FIG. 8, and generally comprises a hull 1,
It comprises a propulsion device 2 provided at the rear of the hull 1, a seat 3 (seat) provided on the hull 1, and a control section 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 has a body 8 that is rotatably provided, and a right grip lever section 9 and a left grip lever section 10 attached to the body. Of these, the right grip lever part 9
It serves as a throttle lever for adjusting the output of the engine.

Namely, the operator is the sheet - rode on preparative 3, the right grip lever - Komu grips the grip parts 9 (rotating) that is, the personal watercraft while adjusting the above output SL engine Can be promoted.

[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. 8, and the grip is turned. As a result, the cable 11 is pushed and pulled, whereby the nozzle 5 is rotated.

FIG. 6 is an enlarged view of the conventional left grip lever portion 10. This left clip lever part 10
Is a rod-shaped lever 1 fixed to the steering body 8 side.
2, a guide tube 13 that is rotatably inserted in the lever 12, and a pulley 14 that is integrally projectingly provided 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.

At a predetermined portion in the circumferential direction of the pulley 14, the wire cable 11 connected to the nozzle side is provided.
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.
As shown in, the nozzle is in the neutral (NEUTRAL) state, the nozzle is in the UP state, and the nozzle is in the DOWN state.

Further, during traveling, a restoring force (reaction force) acts on the propulsion nozzle 5 by the thrust force at the time of jetting water, so that the NE
In order to hold each of the UTRAL, UP and DOWN positions, a means for restricting the movement of the wire cable 11 is required. Therefore, the left grip lever portion 10
6 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. 7 is an enlarged view of the lock mechanism 18.

As shown in FIG. 7A, the engaging groove 19 is formed.
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 becomes the groove 19b. The engaged groove 19b is
The above three positions (UP, NEUTRAL, D
OW) are provided in the circumferential direction at predetermined intervals.

On the other hand, the engagement body 20 is rotatably attached to a rotation shaft indicated by 21 in FIG. 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, ribs between the engaged grooves 19b (indicated by 23 in FIG. 7).
It is necessary to increase the wall thickness of the to some extent.

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 riding type small boat having a propulsion nozzle angle switching mechanism which provides a moderation feeling when switching the propulsion nozzle angle and enables finer position setting. The purpose is to provide a device.

[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 behind the hull, In a propulsion nozzle drive device for a small boat device, comprising: a wire cable connected to the propulsion nozzle; and a grip lever part for driving the propulsion nozzle to swing by driving the wire cable. A pulley which is freely provided and around which the wire cable is wound, a housing which is fixed to the hull side and covers the pulley, and the wire cable which is provided integrally with the pulley and is rotationally driven so that the wire cable is passed through the pulley. A grip for driving the grip, locking means for locking the grip with respect to the housing at a predetermined rotation angle position, and the grip Possess a detent means for imparting a resistance to the rotation of the grip as it passes through the predetermined rotational angle position, said locking means, said housings
Locking base fixed to the surface facing the grip of the ring
And the predetermined rotation angle position on this lock base
A plurality of engaging holes provided at intervals corresponding to
The lock base so that it can move freely toward and away from the lock base.
It is held and each grip hole is driven by rotation.
And the engaging body that sequentially faces the
The engagement body is pressed against the lock base,
The detent hand, which has a pressing mechanism for engaging with the dowel,
The step, when the pressing by the pressing means is released,
Elastically biasing the engagement body against the lock base
It is characterized by having a biasing mechanism .

[0028]

A second means is the propelling nozzle driving device of the first means, characterized in that at least a portion of the engaging body engaging with the engaging hole is formed into a spherical shape. is there.

A third means is the propulsion nozzle drive device of the first means, in which the pressing mechanism is drivably held by the grip and the operator holding the grip drives it with his / her finger to perform the operation. It is characterized by having a pressing body that can release the pressing of the combined body.

A fourth means is the propelling nozzle driving device according to the third means, wherein the biasing mechanism is formed on the pressing body. A fifth means is the propulsion nozzle drive device according to the third means, wherein the biasing mechanism is formed in the grip.

A sixth means is the propulsion nozzle drive device according to the fourth or fifth means, wherein the urging means is a leaf spring member whose one end side is fixed to the pressing body or the grip. It is a thing.

A seventh means is the propulsion nozzle drive device according to the sixth means, wherein the engaging member is integrally provided at the other end of the spring member whose one end is fixed to the grip. It is what

[0034]

According to this structure, the wire cable can be driven and the propulsion nozzle can be rockably driven by turning the grip. Further, the rocking angle of the propulsion nozzle can be fixed by locking the grip at a predetermined rotation angle position with respect to the housing by the locking means. Further, when switching the rotation angle position, since the detent means can provide a sense of moderation, it is possible to accurately perform positioning with respect to an arbitrary rotation angle position.

Further, the detent means and the locking means have a lock base and an engaging body as common components, and the engaging body is firmly pressed against the lock base to perform locking, and the engaging body is elastically attached. Perform detent by energizing.

Furthermore, since the portion of the engaging body which engages with the engaging hole is formed in a spherical shape, the sliding of the engaging hole and the engaging body is made smooth when the engaging body is elastically held. As it can be done, the grip can be easily turned.

Further, the structure can be simplified by using a pressing body and a plate spring provided on the pressing body or the grip side as specific components of the pressing mechanism of the locking means and the urging mechanism of the detent means. You can

[0038]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 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 components as those described in the section of the related art are designated by the same reference numerals and the description thereof will be omitted.

First, the connection structure between the propulsion nozzle 5 and the left grip lever portion 10 in this embodiment will be described with reference to FIG. In this figure, reference numeral 10 denotes the left grip lever portion, and reference numeral 5 denotes the propulsion nozzle that is provided at the rear portion of the hull 1 and is rotatably (swingably) held by a rotation shaft 28. is there.

Two first wire cables 25 are led out from the left grip lever portion 10. The first wire cable 25 is wound around the pulley 14 provided in the left grip lever portion 10, and the grip 1
When 6 is turned, either one is on the pulling side.

The ends of the two first wire cables 25 are connected to a conversion mechanism indicated by 26 in the drawing. The conversion mechanism 26 is configured to convert a small driving force given from the left grip lever to the first wire cable 25 into a large driving force and transmit the large driving force to a second wire cable 27 shown in FIG. ing.

The second wire cable 27 is responsible for both the pushing force and the pulling force, and has a larger diameter than the first wire cable 25.
The end of the second wire cable 27 is connected to the swing end of the propulsion nozzle 5.

As described above, the two types of wire cables, that is, the first and second wire cables 25 and 27, are used because the first diameter is small near the steering section 6 (see FIG. 8). This is because the use of the wire cable 25 of FIG.

Since the converting mechanism 26 is provided, the left grip lever portion 10 is connected to the first wire cable 2
The driving force applied to 5 is small.
Next, regarding the configuration of the left grip lever portion 10, FIG.
The description will be made with reference to FIG.

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. 1 (a), the left grip lever unit 10 includes a lever 12 which is fixed to the steering main body 8 side, the guide tube 13 fitted rotatably to the lever 12, the A pulley 14 formed integrally with the 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 26, and the pulling force is transmitted via the second wire cable 27. there it'll carry out the angle switching operation Unina to the propulsion nozzle 5.

Next, the switching mechanism 24 (locking means, detent means) which is an essential part of the present invention will be described. The switching mechanism 24 can be operated by the index finger of the left hand, as shown in FIG.
It is provided on the front side of the boundary between 6 and the housing 15.

[0049] This mechanism, lock base comprising drilled at predetermined intervals through hole 28a as shown in is fixed to the surface on the side opposite to the grip 16 of the housing 1 5 Figure 1 (b) in the circumferential direction 28, a metal spherical body 29 (engaging body) that engages with the through hole 28a of the lock base 28 as shown in FIG. 1 (a), and the collar portion 16a of the grip 16 holds the spherical body 29. And a holding hole 30 and a holding portion 16b provided on the outer surface of the grip 16 to press the sphere 29 against the lock base 28 to lock the grip 16 (locking means, pressing mechanism). And a leaf spring 32 (detent means, biasing mechanism) that is attached to the pressing body 31 and elastically holds the spherical body 29 when the lock is released.
Have and.

Hereinafter, each part will be described in detail. As shown in FIG. 1B, the lock base 28 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 28a provided in the lock base 28 are formed on the same circumference centered on the rotation axis of the grip 16 at 15 ° intervals in the circumferential direction.

The through holes 28a are located at positions (UP1 and UP shown in FIG. 3) corresponding to the inclination angle of the propulsion nozzle 5.
2, NEUTRAL, DOWN1, DOWN2).

On the other hand, the holding hole 30 provided in the collar portion 16a of the grip 16 is provided at a position corresponding to each through hole 28a as shown in FIG. 1 (c). Therefore, by turning the grip 16, the holding hole 3
The spheres 29 held inside 0 are sequentially opposed to the through holes 28a of the lock base 28.

[0053] Further, the holding hole 30 closed slightly larger inner diameter than the diameter of the sphere 29 and the sphere 29 and held movable in direction toward and away from the said lock base 28.

The pressing body 31 is the same as the grip 16 described above.
It is rotatably held by a rotating shaft 33 that is provided between a pair of holding portions 16b (only one of which is shown in the drawing) provided so as to project on the outer surface of the.

The structure of the pressing body 31 is shown enlarged in FIG. The pressing body 31 has the rotating shaft 33.
It is biased in the direction shown by the arrow in this figure by the torsion spring 34 which is externally inserted. The operator holds the release button 35 provided on the pressing body 31 with, for example, the index finger to resist the biasing force of the torsion spring 34 as shown in FIGS. 2 (a) and 2 (b). 31 can be rotationally driven.

On the other hand, at a portion of the pressing body 31 facing the flange portion 16a of the grip 16, a convex portion 31a for pressing the spherical body 29 to the lock base 28 side in the locked state shown in FIG. 2C. And a recess 31b for releasing the pressing force of the spherical body 29 at the time of unlocking as shown in FIG. 2 (a).

The above-mentioned leaf spring 32 is fixed to the pressing body 31, is guided downward along the surface of the convex portion 31a, and the tip portion is positioned in the concave portion 31b.

In the leaf spring 32, in the released state shown in FIGS. 2 (a) and 2 (b), the spherical body 29 has the holding hole 3
The ball 29 is held so that it does not fall from 0, and
Has a function of elastically urging the lock base 28.

Next, the position switching operation using the mechanism 24 will be described. To switch the position, the operator holds the release button 35 and rotates the pressing body 31 upward as shown in FIG. 2 (a). This releases the pressing force (lock) of the spherical body 29.

Next, the operator turns the grip 16 to drive the first wire 25 via the guide tube 13 and the pulley 14. At this time, as shown in FIG.
Since it is elastically held by, the operator can rotate the grip 16 against the biasing force of the leaf spring 32.

That is, when the grip 16 is turned, the sphere 29 is moved to the lock base 2 as shown in FIG. 2 (b).
8, the plate spring 32 bends toward the recess 31b. And
The spherical body 29 is again formed in the through hole 28 of the lock base 28.
When facing a, the sphere 29 is the leaf spring 32.
Due to the urging force of the above, it is fitted into the through hole 28a.

When the sphere 29 is fitted into the through hole 28a, the impact at that time is transmitted to the release button 35 or the grip 16 itself held by the operator through the leaf spring 32. Therefore, the operator can feel the sphere 29 as it passes through the through hole 28 a of the lock base 28.

That is, when the angular position is switched, the through hole 28a of the lock base 28, the sphere 29 and the leaf spring 32 constitute the detent means (temporary detent mechanism) of the present invention.

With this detent means, the operator can obtain a feeling of moderation and reliably position the sphere 29 at an arbitrary position. Then, when the release button 35 is released when an impact is felt on the release button 35, the pressing body 31 is rotated by the restoring force of the torsion spring 34, and as shown in FIG. The sphere 29 is pressed against the lock base 28 at the portion 31a. As a result, the sphere 2
9 firmly engages (locks) with the through hole 28a of the lock base 28.

Therefore, the grip 16 is held in a non-rotatable manner, whereby the propulsion nozzle 5 is fixed at a desired position. That is, the through hole 28a of the lock base 28, the spherical body 29, and the convex portion 31a of the pressing body 31 constitute the locking means of the present invention.

According to this structure, the following effects can be obtained. First, since a “moderation 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. Therefore, it was necessary to check the display unit 7 (see FIG. 8) each time when switching.

In particular, in the case where there are five switching positions as in the first embodiment, unless the grip is turned while looking at the display section 7, there is a risk that the adjacent position may pass by without being known. It was For this reason, it takes a lot of time (time) to switch the angle of the propulsion nozzle 5 and the degree of concentration on driving may decrease.

However, according to the present invention, since the detent means is constructed, the spherical body 29 is provided with the through hole 28a (predetermined rotation angle position) of the lock base 28.
It is possible to obtain a feeling of moderation due to the impact when passing through. Therefore, even if the display unit 7 is not viewed, the grip 16
You can see exactly how many positions you have turned.

Since the detent means is constructed, the sphere 29 can be easily positioned with respect to the through hole 28a. Because of these, the angle of the propulsion nozzle 5 can be switched and the positioning can be surely performed without looking at the display unit 7 one by one, so that the angle of the propulsion nozzle 5 can be adjusted properly while concentrating on the operation. There is an effect that can be done quickly.

Secondly, there is an effect that the switching mechanism capable of obtaining the above-described moderation can be made compact. That is, in the present invention, the structure of the lock means and the structure of the detent means for obtaining the feeling of moderation are made to be the same part, that is, the lock base 28 and the spherical body 29.

Therefore, the locking means and the detent means can be provided integrally, and the number of parts can be reduced and the structure can be made compact as compared with the case where they are provided separately.

Thirdly, there is an effect that it is possible to realize multistage switching. That is, the conventional product (Fig. 7)
As described above, since the engaged groove 19b for supporting the reaction force from the propulsion nozzle 5 is formed integrally with the housing 15 and formed of resin, the engaged groove 19b between the engaged grooves 19b is secured to ensure strength. It was necessary to increase the wall thickness of the rib 23.
Therefore, due to space limitations, UP, DOWN, NE
There were times when I could only secure 3 positions of UTRAL.

However, in the present invention, since the structure provided on the housing 15 side can be as simple as the through hole 28a, the lock base 28 having the through hole 28a can be formed separately from the housing 15. You can

Further, since the lock base 28 is made of metal, the strength for locking can be secured, so that the interval between the through holes 28a can be narrowed. As a result, even if the grip 16 is rotated at the same angle, it is possible to secure a multi-stage position (five positions in this embodiment) as compared with the conventional case.

Further, since the detent means can provide a feeling of moderation, even if such multi-stage positions are provided, it is possible to surely perform the positioning for each position.

As a result, the degree of freedom in switching the angle of the propulsion nozzle 5 is increased, and there is an effect that a better and more leisurely operation can be realized. It should be noted that the present invention is not limited to the above-mentioned one embodiment, and can be variously modified without changing the gist of the invention. Next, this modification will be described.

The configuration shown in FIG. 4 (a) has a metal leaf spring 32 provided on the pressing body 31 side in the above embodiment.
The (biasing mechanism) is attached to the flange 16a side of the grip 16.

According to this structure, the sphere 29 can be pressed against the lock base 28 by the convex portion 31a of the pressing body 31 (locking means), and the release button 35 is driven to press the sphere. When released, the sphere 29 can be elastically held by the leaf spring 32 (detent means). Therefore, it is possible to obtain the same effect as that of the one embodiment.

In the structure shown in FIG. 4B, the leaf spring 32, which is provided separately from the pressing body 31 in the above embodiment, is formed integrally with the pressing body 31.
Is replaced with.

According to this structure, the spherical body 29 can be pressed against the lock base 28 by the convex portion 31a of the pressing body 31 (lock means), and the release button 35 is driven to move the spherical body 29. When the pressing is released, the leaf spring portion 32 'can elastically hold the spherical body 29 (detent means). Therefore, it is possible to obtain the same effect as that of the one embodiment.

The configuration shown in FIG. 4C is the same as that shown in FIG.
The leaf spring portion 32 ′, which is integrally formed with the pressing body 31 in the configuration shown in (b), is integrally formed with the collar portion 16 a of the grip 16.

According to this structure, the spherical body 29 can be pressed against the lock base 28 by the convex portion 31a of the pressing body 31 (lock means), and the release button 35 is driven to move the spherical body 29. When the pressing is released, the leaf spring portion 32 'can elastically hold the spherical body 29 (detent means). Therefore, it is possible to obtain the same effect as that of the one embodiment.

In the structure shown in FIG. 5A, the spherical body 29 of the above embodiment is replaced with a shell-shaped engaging body 29 '. Even with such a configuration, the engaging body 29 '
Has the same function as that of the sphere 29, and therefore, the same effect as that of the above-described embodiment can be obtained.

The configuration shown in FIG. 5B is the same as that shown in FIG.
The shell-shaped engagement body 29 ′ member shown in FIG.
It is integrated with the leaf spring 32 shown in (a). According to such a configuration, the convex portion 31 of the pressing body 31 is
The engaging body 29 can be pressed against the lock base 28 by a (lock means), and the release button 35 can be pressed.
When the pressing force of the engaging body 29 'is released by driving, the leaf spring 32 can elastically hold the engaging body 29' (detent means). Therefore, it is possible to obtain the same effect as that of the one embodiment.

In the mechanism described above, the torsion spring 34 serves as a means for urging the pressing body 31.
However, the present invention is not limited to this, and the same effect may be obtained by inserting other means, for example, a compression spring.

[0087]

According to the structure described above, firstly, since the detent means is provided, it is possible to obtain a feeling of moderation when turning the grip, and it is possible to quickly perform positioning at any rotation angle position.

Secondly, the detent means and the locking means have the lock base and the engaging body as common constituent elements, and the engaging body is firmly pressed against the lock base to lock the engaging body. Since the detent is performed by elastically urging, the configuration can be simplified and the space can be saved.

Thirdly, by narrowing the intervals of the engagement holes provided in the lock base, it is possible to carry out more stages of angle switching, and the degree of freedom in setting the angle of the propulsion nozzle is improved.

[Brief description of drawings]

1A is a longitudinal sectional view showing an embodiment of the present invention, FIG. 1B is a sectional view taken along line I-I of FIG. 1A, and FIG.
Is a cross-sectional view taken along line II-II of (a).

FIG. 2A to FIG. 2C are enlarged longitudinal sectional views showing a grip angle switching process.

FIG. 3 is an explanatory view showing a connection configuration between a grip lever portion and a propulsion nozzle, similarly.

4A to 4C are vertical cross-sectional views showing another embodiment.

5A and 5B are vertical cross-sectional views showing another embodiment.

FIG. 6 is a vertical sectional view showing a conventional example.

7A and 7B are process diagrams showing a grip angle switching process.

FIG. 8 is an external view showing a general watercraft.

[Explanation of symbols]

1 ... Hull, 5 ... Propulsion nozzle, 10 ... Grip lever part,
14 ... Pulley, 15 ... Housing, 25 ... First wire cable, 27 ... Second wire cable, 28 ... Lock base, 28a ... Through hole (engaging hole), 29 ... Sphere (engaging body), 31 ... Pressing Body (locking means, pressing mechanism), 3
2 ... Leaf spring (detent means, biasing mechanism).

Claims (7)

(57) [Claims] 1. A propulsion nozzle that is provided at the rear of a hull so as to be vertically swingable and that generates thrust by ejecting water behind the hull, a wire cable connected to the propulsion nozzle, and a wire. In a propulsion nozzle drive device for a small boat device, which has a grip lever part that swings and drives the propulsion nozzle by driving a cable, the grip lever part is rotatably provided and is a pulley around which the wire cable is wound. A housing fixed to the hull side and covering the pulley; a grip provided integrally with the pulley to drive the wire cable through the pulley to be driven to rotate; and the grip with respect to the housing. Locking means for locking at a predetermined rotation angle position and the grip passes through the predetermined rotation angle position. And a detent means for imparting a resistance to the rotation of the grip upon, the locking means is fixed on a surface facing the grip of the housing B
The lock base and the lock base at the specified rotation angle position.
A plurality of engaging holes provided at corresponding intervals, and moves in the direction in which the grip comes in contact with and separates from the lock base.
It is held freely and by rotating this grip
An engaging body that sequentially faces the engaging holes and the grip provided on the grip, and the engaging body is provided with the lock base.
Pressing mechanism that presses against the engagement hole and engages with the engaging hole
And the detent means is configured such that when the pressing by the pressing mechanism is released , the detent means
Bias for elastically biasing the united body against the lock base
A propulsion nozzle drive device having a mechanism . 2. The propulsion nozzle drive device according to claim 1 , wherein at least a portion of the engagement body that engages with the engagement hole is formed in a spherical shape. 3. The propulsion nozzle drive device according to claim 1, wherein the pressing mechanism is movably held by the grip, and an operator holding the grip drives the engaging body by pressing with a finger. A propulsion nozzle drive device having a pressing body that can be released. 4. The propulsion nozzle drive device according to claim 3 , wherein the urging means is formed on the pressing body. 5. The propulsion nozzle drive device according to claim 3, wherein the biasing mechanism is formed in the grip. 6. The propulsion nozzle drive device according to claim 4 or 5 , wherein the urging mechanism is a leaf spring member whose one end side is fixed to the pressing body or the grip. apparatus. 7. The propulsion nozzle drive device according to claim 6, wherein the engaging member is integrally provided at the other end of the spring member whose one end side is fixed to the grip. Drive.