JP2003127991A - Water jet propulsion boat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve easiness to get alongside the quay by accurately stopping a body. SOLUTION: When spools 58, 59 are rotated by an electric motor 39 driven in linkage with the operation of an operation lever 32 and a clutch cable 66 is moved in one direction with the friction force of a clutch cable 66, when fastened, wound on the spool 58 with the operation of the operation lever 32 in one direction, a reverse bucket 36 is oscillated downward via a stroke enlarging member 60 and a reverse cable 37. When the clutch cable 67 is moved to the other direction with the friction force of a clutch cable 67, when fastened, wound on the spools 58, 59 with the operation of the operation lever 32 in the other direction, the reverse bucket 36 is oscillated upward via the stroke enlarging member 60 and the reverse cable 37.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a water jet propulsion watercraft.

[0002]

2. Description of the Related Art A water jet propulsion watercraft advances by injecting a jet flow generated by a jet propulsion machine having an impeller driven by an engine rearward from an injection nozzle, and straddles a straddle type seat. The operator operates the steering wheel to swing the deflector left and right to steer the vehicle (Japanese Patent Laid-Open No. 2000-27258).
(See Japanese Patent Publication No. 5).

[0003]

In the water jet propulsion watercraft described above, it is desired to stop the hull accurately so that the water jet propulsion watercraft can be smoothly landed on the quay. .

The present invention has been made to satisfy the above-mentioned demands, and an object of the present invention is to provide a water jet propulsion boat in which the hulling property is improved by stopping the hull accurately.

[0005]

In order to achieve the above-mentioned object, the first aspect of the present invention provides a water which advances by injecting a jet flow generated by a jet propulsion machine driven by an engine backward from an injection nozzle. In a jet propulsion boat, an electric motor driven in association with the operation of the operation lever, a spool rotated by the electric motor, and a clutch cable wound around the spool are provided, and the spool is operated by operating the operation lever. A water jet characterized in that when the clutch cable is moved by the frictional force when it is fastened to the end, the reverse bucket is oscillated upward or downward via the stroke expanding member and the reverse cable. It provides a propulsion boat.

According to the first aspect of the present invention, the friction is generated when the spool is rotated by the electric motor which is driven in conjunction with the operation of the operation lever and the clutch cable wound around the spool is tightened by the operation of the operation lever in one direction. When the clutch cable is moved in one direction by the force, the reverse bucket is swung downwards via the stroke expanding member and the reverse cable, and the clutch cable wound on the spool is tightened by operating the operating lever in the other direction. When the clutch cable is moved in the other direction by the frictional force at the time, the reverse bucket is swung upward through the stroke expanding member and the reverse cable, and the propulsive force of the hull can be adjusted by operating the operating lever. Since it is possible to control the hull accurately, the hull can be stopped accurately and it becomes possible to berth smoothly.

Also, since the clutch cable is moved by the frictional force when the clutch cable is tightened on the spool rotated by the electric motor to swing the reverse bucket up and down, the swinging force of the reverse bucket is assisted by the electric motor. , The operation lever can be operated lightly.

Further, since it has a mechanical structure such as an electric motor, a spool, a clutch cable, a stroke enlarging member, etc., an electronic control device as in the case of using a servo motor is not required, so that the operation is highly reliable and the manufacturing is possible. The cost will be low.

According to a second aspect of the present invention, in a water jet propulsion watercraft that moves forward by injecting a jet flow generated by a jet propulsion machine driven by an engine rearward from an injection nozzle, it is turned on when a steering lever of a steering handle is grasped. Then, a switch that turns off when released, an electric motor that is driven when this switch is on and that is stopped when this switch is off, and a forward rotation spool that is continuously rotated in the forward rotation direction and a continuous rotation in the reverse rotation direction by this electric motor. The reverse rotation spool, the forward rotation clutch cable wound around the forward rotation spool, the reverse rotation clutch cable wound around the reverse rotation spool, and one end of each clutch cable are connected to each other, and the forward rotation is performed by gripping the operation lever. Then tighten the forward rotation clutch cable to the forward rotation spool and at the same time reversely rotate the reverse rotation clutch cable. And loosen the forward rotation clutch cable from the forward rotation spool, and at the same time tighten the reverse rotation clutch cable to the reverse rotation spool. When the input arm and the other end of each of the clutch cables are connected and the clutch cable is moved by the frictional force when one of the clutch cables is fastened to the corresponding spool, the other end of the cable is moved. An output arm that rotates in the forward or reverse direction is provided, and the output arm is rotated in the forward direction together with the forward rotation clutch cable by the frictional force when the input arm is rotated in the forward direction by the operation of gripping the operation lever and is tightened to the forward rotation spool. When the reverse bucket is swung downward through the stroke expanding member and the reverse cable, When the output arm is reversely rotated together with the clutch cable for reverse rotation by the frictional force when it is tightened on the reverse rotation spool by the reverse rotation of the input arm due to the loosening operation of the operation lever, the reverse bucket is inserted through the stroke expanding member and the reverse cable. The present invention provides a water jet propulsion watercraft, characterized in that the water jet propulsion boat is characterized by being rocked upward.

According to the second aspect of the present invention, the forward rotation spool and the reverse rotation spool are continuously rotated by the electric motor driven by the switch which is turned on when the operation lever is gripped, and the input arm is normally swung by the operation lever gripped. By tightening the forward rotation clutch cable to the forward rotation spool, at the same time loosening the reverse rotation clutch cable from the reverse rotation spool, the output arm was rotated forward together with the forward rotation clutch cable due to the frictional force when the forward rotation clutch cable was tightened. At this time, the reverse bucket is oscillated downward via the stroke expanding member and the bucket cable.

Further, when the input arm is reversely rotated by loosening the operation lever, the reverse rotation clutch cable is fastened to the reverse rotation spool, and at the same time, the forward rotation clutch cable is loosened from the forward rotation spool and the reverse rotation clutch cable is tightened. When the output arm is reversely rotated together with the reverse clutch cable by the frictional force, the reverse bucket is swung upward via the stroke expanding member and the bucket cable.

Therefore, as in the first aspect of the invention, the propulsive force of the hull can be arbitrarily controlled by operating the operation lever, so that the hull can be stopped accurately and the berth can be smoothly landed. .

Further, the forward rotation spool and the reverse rotation spool, which are continuously rotated by the electric motor, move the corresponding clutch cables by frictional force when the forward rotation clutch cable and the reverse rotation clutch cable are relatively fastened. Since the reverse bucket is rocked up and down by the electric motor, the rocking force of the reverse bucket is assisted by the electric motor, and the operation lever can be operated with a light force.

Further, an electric motor, a forward / reverse rotation spool,
Since it is a mechanical structure such as forward / reverse clutch cable, input / output arm, stroke expanding member, etc., an electronic control device such as when using a servo motor is not required.
Highly reliable operation and low manufacturing cost.

Furthermore, since the electric motor can be continuously rotated, the responsiveness is improved as compared with the case where the electric motor is once stopped and then forward / reverse rotation is performed.

In claim 1 or 2, as in claim 3, when the clutch cable is a wire,
A slipping material is provided between the clutch cable and the spool, or when the clutch cable is a metal ribbon as in claim 4, when the slipping material is baked on the spool side surface of the clutch cable. The wear of the wire or the metal ribbon can be prevented and the durability can be improved.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, a water jet propulsion boat 1
The hull member 2 and the deck member 3 are joined together at their peripheral portions to form a hull 4, and an engine 6 is provided in an engine room 5 formed in the hull 4 at a substantially central position in the front-rear direction. A fuel tank 7 is installed in front of the engine 6, and a jet propulsion machine 10 is installed in a pump room 9 that is partitioned by a bulkhead 8 behind the engine room 5.

A steering handle 12 is provided on the front upper portion of the deck member 3, a seat base 13 is provided on the rear upper portion of the deck member 3, and a seating seat 13 in the front-rear direction is provided on the seat base 13. 14 is detachably attached. Note that 15a and 15b are ventilation ducts that connect the engine room 5 to the atmosphere.

An impeller shaft 18 is connected to a crank shaft 16 of the engine 6 via a coupling 17, and an impeller (not shown) housed in an impeller housing 10a of the jet propulsion machine 10 is connected to the impeller shaft 18. The injection nozzle 19a is provided at the rear end of the impeller housing 10a, and the deflector 19b is attached to the injection nozzle 19a.

Then, the jet flow generated by the impeller of the jet propulsion machine 10 driven by the engine 6 is injected into the injection nozzle 19
By injecting backward from a, the hull 4 is propelled, and the operator straddling the straddle-type seat 14 operates the steering handle 12 to swing the deflector 19b of the injection nozzle 19a left and right. It will be turned.

The engine 6 is installed on the hull member 2 so that the crankshaft 16 extends in the front-rear direction of the hull 4,
An intake pipe 21 for each cylinder connected to an intake port of a cylinder head and an intake chamber 22 connected to an upstream end of the intake pipe 21 are provided on the port side of the engine 6, and the front of the engine 6 is provided. An intake silencer 23 is provided in the intake air silencer 23, and the intake silencer 23 and the intake chamber 22 are connected via an intake duct 24.

An exhaust pipe 25 connected to the exhaust port of the cylinder head is provided on the starboard side of the engine 6, and the exhaust pipe 25 penetrates the bulkhead 8 while extending to the rear of the engine 6. Connected to the water lock 26 in the pump room 9,
The discharge pipe 26a of 6 is connected to the outside of the boat.

A control box 28 is installed above the bulkhead 8 on the engine room 5 side.

As shown in FIGS. 2 and 3, an operating lever 32 is attached to a bracket 31 near the handgrip 30 on the left side of the steering handle 12 by a rotating pin 32a. , Operating lever 32
A switch 33 (see FIG. 5) is provided which is turned on when grasped and turned off when released. Further, the operation lever 32 includes a front end portion 35 of the inner cable 35a of the operation cable 35.
b is connected. Although not specifically shown, a throttle lever is attached near the right hand grip of the steering handle 12.

A reverse bucket 36 capable of covering the rear of the deflector 19b is mounted on the rear portion of the impeller housing 10a so as to be vertically swingable by a pivot pin 36a at the left and right positions, and a reverse cable 37 is attached to the reverse bucket 36. Inner cable 37a rear end 3
7c is connected.

The cable clutch mechanism 38A of the first embodiment is installed between the rear end portion 35c of the inner cable 35a of the operation cable 35 and the front end portion 37b of the inner cable 37a of the reverse cable 37.

An electric motor 39 is provided in the cable clutch mechanism 38A, and a battery 41 is connected to the electric motor 39 through the switch 33 and the relay 40 (see FIG. 5) to turn on the switch 33. Then, the relay 40 is excited and the electric motor 39 is driven, and when the switch 33 is turned off, the relay 40 is demagnetized and the electric motor 39 is stopped.

A worm 43 is attached to the output shaft of the electric motor 39, and the worm 43 is meshed with a worm wheel 47 of a rotary shaft 46 supported by a bearing 45 of a gearbox 44 shown in FIG. . The first gear 48 is attached to the rotary shaft 46 inside the gearbox 44.
And a second gear 49 having a diameter slightly larger than that of the first gear 48 is fixed. Then, in FIG. 2, the electric motor 3
When the worm 43 rotates to the right a by 9, the worm wheel 47 rotates to the left b, and the rotation shaft 46 causes the first gear 4 to rotate.
8 and the second gear 49 rotate left b.

A hollow rotary shaft 51 is supported by a bearing 50 of a gear box 44 at a fixed distance from the rotary shaft 46. The hollow rotary shaft 51 is provided with a third gear 52 having the same diameter as the second gear 49. The first gear 48 is fixed so as not to directly mesh with the first gear 48, and an idle gear 53 is meshed with the first gear 48 and the third gear 52. Then, in FIG. 2, when the first gear 48 rotates counterclockwise b, the idle gear 5
3 rotates right a and the third gear 52 rotates left b.

A fourth gear 54 having the same diameter as the second gear 49 and directly meshing with the hollow rotary shaft 51 is supported via a bearing 55. Then, in FIG. 2, when the second gear 49 rotates left b, the fourth gear 54 rotates right a.

The fourth gear 54 is integrally provided with a forward rotation spool 58 which is rotated to the right by the fourth gear 54, and the hollow rotation shaft 46 is rotated to the left by the third gear 52 and is rotated to the left by a reverse rotation spool 59. Is fixed.

A hollow shaft portion 60a of the output arm 60 penetrates through the inside of the hollow rotary shaft 46, and the hollow shaft portion 60a.
Is supported by the hollow rotating shaft 51 via a bearing 61, and the shaft portion 62a of the input arm 62 penetrates inside the hollow shaft portion 60a. The shaft portion 62a is connected via the bearing 63 to the hollow shaft portion 60a. It is supported by 60a.

Lever portions 60b are attached to both ends of the hollow shaft portion 60a of the output arm 60, and upper end portions of the lever portions 60b are connected by a shaft portion 60c. Further, lever portions 62b are attached to both ends of the shaft portion 62a of the input arm 62, and upper end portions of the lever portions 62b are connected by a shaft portion 62c.

The rear end portion 35c of the inner cable 35a of the operation cable 35 is connected to the lower end portion of the lever portion 62b on one side (the left side in FIG. 2) of the input arm 62, and when the operation lever 32 is gripped and operated. , The inner cable 35a moves in the direction of arrow c and the input arm 62 turns to the right (correct), and when the operation lever 32 is loosened, the input arm 62 is turned to the left (reverse) by the urging force of the return spring 64. Then, the inner cable 35a moves in the direction of arrow d.

The upper end portion of the other lever portion 60b (left side in FIG. 2) of the output arm 60 is extended upward,
The front end portion 37b of the inner cable 37a of the reverse cable 37 is connected to the extension portion 60d, and when the output arm 60 turns to the right (normal) a, the inner cable 37a moves in the direction of the arrow e to move the reverse bucket 36.
When the output arm 60 swings to the left (reverse) b while the lower arm swings g, the inner cable 37a moves in the direction of the arrow f, and the reverse bucket 36 swings upward h.

As shown in FIG. 3, the swivel center C of the input arm 62 and the inner cable 35 of the operation cable 35.
The distance L1 between the rear end portion 35a and the connecting portion of the rear end portion 35c and the distance L2 between the turning center C of the output arm 60 and the connecting portion of the tip portion 37b of the inner cable 37a of the reverse cable 37 are L1. The relationship of <L2 is set, and the inner cable 37 of the reverse cable 37 corresponds to the movement stroke of the inner cable 35a of the operation cable 35.
The moving stroke of a is increased. That is, the output arm 60 also functions as a stroke expanding member.

As shown in detail in FIGS. 4 and 6, a forward rotation clutch cable 66 is wound around the forward rotation spool 58, and one end portion 66a and the other end portion 66b of the forward rotation clutch cable 66 are X-shaped. One end 66a of the shaft portion 62c of the input arm 62 in the state of being crossed in a letter shape.
Is fixed to the shaft with a metal fitting 68a and a screw 68b, and the other end 66b is provided with a shaft portion 60c of the output arm 60.
It is fixed by a metal fitting 68a and a screw 68b.

A reverse rotation clutch cable 67 is wound around the reverse rotation spool 59. One end portion 67a and the other end portion 67b of the reverse rotation clutch cable 67 are opened in a V shape, and one end portion 67a is opened. The shaft portion 62c of the input arm 62 is fixed to the shaft portion 60c of the output arm 60 by the pressing metal member 68a and the screw 68b, and the other end portion 67b is fixed to the shaft portion 60c of the output arm 60 by the pressing metal member 68a and the screw 68b.

Since the forward rotation spool 58 is rotated to the right (forward) and the reverse rotation spool 59 is rotated to the left (reverse), when the input arm 62 is rotated rightward, the forward rotation spool 58 is rotated relative to the forward rotation spool 58. At the same time as the forward rotation clutch cable 66 is tightened, the reverse rotation clutch cable 67 is loosened with respect to the reverse rotation spool 59.
The forward rotation clutch cable 66 is moved in the right direction a by the right rotation force of the forward rotation spool 58 by the frictional force when it is fastened to 8, and is pulled by the other end 66b of the forward rotation clutch cable 66 to output the output arm 60. Will be turned to the right a.

Similarly, when the input arm 62 turns to the left b, the forward rotation clutch cable 66 is loosened with respect to the forward rotation spool 58, and at the same time, the reverse rotation clutch cable 67 is tightened with respect to the reverse rotation spool 59. The reverse rotation clutch cable 67 is moved in the left direction b by the left rotation force of the reverse rotation spool 59 by the frictional force when it is fastened to the reverse rotation spool 59, and is pulled by the other end 67b of the reverse rotation clutch cable 67 to output. The arm 60 turns left b.

Water jet propulsion boat 1 constructed as described above
The operation of the cable clutch mechanism 38A of the first embodiment will be described.

When the operator grips and operates the operation lever 32 while the water jet propulsion watercraft 1 is running, the switch 33 is turned on and the electric motor 39 is driven to drive the gears 43, 47, 4 and the like.
The forward rotation spool 59 is rotated to the right while the reverse rotation spool 59 is rotated to the left through 8, 49, 52 to 54.

When the gripping operation of the operating lever 32 is strengthened, the inner cable 35a of the operating cable 35 moves in the direction of arrow c, the input arm 62 turns right a, and the forward spool 58 rotates relative to the forward spool 58. At the same time as the cable 66 is tightened, the reverse rotation clutch cable 67 is loosened relative to the reverse rotation spool 59, so that the forward rotation clutch cable 66 is rotated by the frictional force.
Is moved in the right direction a by the right rotating force of, and the output arm 60 is turned right by being pulled by the other end 66b of the forward rotation clutch cable 66, and the inner cable 37a of the reverse cable 37 is moved in the direction of arrow e. As a result, the reverse bucket 36 is swung downward.

On the contrary, when the operation lever 32 is loosened,
The inner cable 35a of the operation cable 35 moves in the direction of arrow d, the input arm 62 turns left b, and the reverse rotation clutch cable 67 is fastened to the reverse rotation spool 59, and at the same time, the forward rotation clutch is rotated against the forward rotation spool 58. Since the cable 66 comes to be loosened, the reverse rotation clutch cable 67 is moved in the left direction b by the left rotation force of the reverse rotation spool 59 due to the frictional force, and is pulled by the other end 67b of the reverse rotation clutch cable 67 to output the output arm. 60
Is turned left b, the inner cable 37a of the reverse cable 37 moves in the direction of arrow f, and the reverse bucket 3
6 is swung upwards.

When the operation lever 32 is released at the end of the loosening operation, the switch 33 turns off and the electric motor 3
9 is stopped.

As described above, while the water jet propulsion boat 1 is in motion, by operating the operation lever 38, the reverse bucket 36 is swung downward or upward h, so that the propulsive force of the hull 4 is arbitrarily set. Since it can be controlled, the hull 4 can be stopped accurately and the berth can be smoothly landed.

The forward rotation spool 58 and the reverse rotation spool 59, which are continuously rotated by the electric motor 39, correspond to the frictional force when the forward rotation clutch cable 66 and the reverse rotation clutch cable 67 are relatively fastened. Since the reverse bucket 36 is swung up or down g by moving the clutch cable 66 or 67, the reverse bucket 3
The swinging force of 6 is assisted by the electric motor 39, so that the operation lever 35 can be operated with a light force. The electric motor 39, the spools 58 and 59, and the clutch cables 66 and 67 form a booster mechanism.

Further, the electric motor 39, the forward / reverse rotation spools 58, 59, the forward / reverse rotation clutch cables 66, 6
7. The mechanical structure of the input arm 62, the output arm 60 that also serves as the stroke enlarging member, and the like eliminates the need for an electronic control device as in the case of using a servomotor, so the operation reliability is high and the manufacturing cost is high. It will be cheaper. Further, since the driving / stopping of the electric motor 39 can be controlled by each one switch 33 and relay 40, the manufacturing cost becomes low in this respect as well.

Furthermore, since the electric motor 39 can be continuously rotated, the responsiveness to the operation of the operation lever 32 becomes good.

Further, since the operation stroke of the operating lever 32 is enlarged by the output arm 60 to swing the reverse bucket 36 up and down, the reverse bucket 36 is swung up and down largely by a small gripping and loosening operation of the operating lever 32. be able to.

Further, by the output arm 60, the inner cable 37 of the reverse cable 37 of the reverse bucket 36 against the movement of the inner cable 35a of the operation cable 35 in the c direction by the grip operation of the operation lever 32.
Movement of a in e direction (downward swing of reverse bucket 36)
Conversely, the inner cable 37a of the reverse cable 37 of the reverse bucket 36 moves in the f direction (upward swing of the reverse bucket 36) with respect to the movement of the inner cable 35a of the operation cable 35 in the d direction by loosening the operation lever 32. The output arm 60 functions as a direction-changing member together with the stroke-increasing member.

Further, the operation lever 32 is moved to the steering handle 12
Since it is mounted in the vicinity of the left hand grip 30 on the left side, the operability is improved in combination with the throttle lever mounted in the vicinity of the right hand grip of the steering handle 12.

Since the clutch cables 66 and 67 are constantly rubbed against the continuously rotating spools 58 and 59, it is preferable to take measures to prevent wear and improve durability.

Therefore, as shown in FIG. 7, when each clutch cable 66, 67 is a wire, it is made of a flexible synthetic resin (for example, nylon or polyacetal) having a groove 70a into which each clutch cable 66, 67 to be wound is fitted. ) The spiral sliding member 70 of (1) is fitted to the spools 58 and 59. Alternatively, as shown in FIG. 8, each clutch cable 66, 67 obtained by outsert-molding the sliding member 70 is used.
Is wound around each spool 58, 59. Alternatively, FIG.
As shown in FIG. 5, when the clutch cables 66 and 67 are metal ribbons, the sliding member 70 made of the same material as a drum brake shoe of an automobile or the like is baked on the spool-side surface of each clutch cable 66 and 67.

10 to 12 show a cable clutch mechanism 38B according to the second embodiment. The parts having the same configurations and functions as those of the cable clutch mechanism 38A according to the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. To do.

As shown in FIG. 10, the steering wheel 1 is
For the second operation lever 32, a switch 73 having a normally open contact 73a that is turned on only in the gripping direction of the operation lever 32 and a normally closed contact 73b that is turned on only in the loosening direction of the operation lever 32 is provided. .

The cable clutch mechanism 38B of the second embodiment is installed between the rear end portion 35c of the inner cable 35a of the operation cable 35 and the front end portion 37b of the inner cable 37a of the reverse cable 37.

The cable clutch mechanism 38B is provided with an electric motor 39, and the electric motor 39 has a structure shown in FIG.
As shown in FIG. 1, the switch 73 and the relays 74 and 75 are
The battery 41 is connected via the switch 73
When the normally open contact 73a of
(B)), the relay 74 is excited to drive the electric motor 39 in the forward rotation direction a, and when the normally closed contact 73b of the switch 73 is turned on, the relay 75 is excited to drive the electric motor 39 in the reverse rotation direction b. Will be done.

A stroke enlargement lever 79, which will be described later, is also provided.
In contrast, the limit switch 76a that is turned off at the turning end of the left turn b (see FIG. 12A) and the limit switch 76 that is turned off at the turning end of the right turn a (see FIG. 11A).
b is provided, and the limit switches 76a and 76b are provided.
When is turned off, the electric motor 39 is stopped.

A worm 43 is attached to the output shaft of the electric motor 39, and the worm 43 is meshed with a worm wheel 47 of a rotary shaft 46 supported by a gearbox 44. The rotary shaft 46 has an electric motor 39
Rotate forward and backward to the left with the worm wheel 47 (normal)
The spool 77 that rotates b and rotates right (reverse) a is fixed,
An intermediate portion 35d of the inner cable 35a of the operation cable 35 is wound around the spool 77. The intermediate portion 35d of the inner cable 35a is
Functions as a clutch cable.

When the operating lever 32 is operated while the spool 77 is rotating counterclockwise b, the spool 7
Since the intermediate portion 35d of the inner cable 35a is tightened with respect to 7, the inner cable 35a is moved in the left direction c by the left rotational force of the spool 77 due to the frictional force when tightened on the spool 77. The stroke expanding lever 79 is pulled leftward by the rear end portion 35c of the cable 35a so as to turn leftward.

Similarly, when the operating lever 32 is loosened while the spool 77 is rotating clockwise a, the spool 7
Since the intermediate portion 35d of the inner cable 35a is tightened with respect to 7, the inner cable 35a is moved in the right direction d by the right rotating force of the spool 77 due to the frictional force when tightened on the spool 77. The stroke expanding lever 79 is pushed rightward by the rear end portion 35c of the cable 35a so as to be turned to the right.

Support bracket 7 fixed to the hull 4
A stroke enlarging lever 79 is pivotally attached to the shaft 8 by a pin 80, and a rear end portion 35c of the inner cable 35a of the operation cable 35 is connected to a lower end portion 79a of the stroke enlarging lever 79 for operation. When the lever 32 is gripped and operated, the inner cable 35a moves in the direction of arrow c and the stroke enlargement lever 79 moves to the left (normal).
When the operation lever 32 is loosened while turning, the stroke expanding lever 79 turns right (reverse) by the biasing force of the return spring 64, and the inner cable 35 is rotated.
a moves in the direction of arrow d.

The upper end portion 7 of the stroke expanding lever 79
The front end portion 37b of the inner cable 37a of the reverse cable 37 is connected to 9b, and when the stroke expanding lever 79 turns to the left (normal) b, the inner cable 37a moves in the direction of arrow e and the reverse bucket 36 moves downward. When the stroke expanding lever 79 turns right (reverse) a while swinging g, the inner cable 37a moves in the direction of arrow f.
And the reverse bucket 36 swings upward h.

The distance L1 between the turning center C (pin 80) of the stroke expanding lever 79 and the connecting portion of the rear end portion 35c of the inner cable 35a of the operation cable 35, and the front end portion of the inner cable 37a of the reverse cable 37. The distance L2 between the connecting portion of 37b and the connecting portion of the operation cable 35 is set to L1 <L2.
For the moving stroke of 5a, the reverse cable 37
The inner cable 37a is designed to have a large movement stroke.

Water jet propulsion boat 1 constructed as described above
The operation of the cable clutch mechanism 38B of the second embodiment will be described.

When the operator grips and operates the operation lever 32 while the water jet propulsion boat 1 is running, the normally open contact 73a of the switch 73 is turned on and the electric motor 39 is normally rotated as shown in FIG. 11 (b). Driven in the direction b, the spool 77 is rotated left b through the worm 43 and the worm wheel 47.

Then, when the operation lever 32 is continuously gripped, the intermediate portion 35d of the inner cable 35a is tightened against the spool 77, so that the inner cable 35a is rubbed by the frictional force when the spool 77 is tightened. It is moved in the left direction c by the left rotational force of the spool 77, is pulled by the rear end portion 35c of the inner cable 35a, and the stroke expanding lever 79 is turned left b, and the inner cable 37a of the reverse cable 37 is moved in the direction of arrow e. Then, the reverse bucket 36 swings downward.
Will be done.

Leftward turn b of the stroke expanding lever 79
Swivel end (see FIG. 12A), that is, the operation lever 32
When the limit switch 76a is turned off at the maximum grip position, the electric motor 39 is stopped.

On the other hand, when the operation lever 32 is loosened,
As shown in FIG. 12B, the normally closed contact 73b of the switch 73 is turned on, the electric motor 39 is driven in the reverse rotation direction a, and the spool 77 is rotated clockwise a via the worm 43 and the worm wheel 47. become.

Then, when the operation of loosening the operation lever 32 is continued, the intermediate portion 35d of the inner cable 35a is tightened with respect to the spool 77, so that the inner cable 35a is rubbed by the frictional force when tightened on the spool 77. The spool 77 is moved in the right direction a by the right rotating force, is pushed by the rear end portion 35c of the inner cable 35a, and the stroke enlargement lever 79 is swung right, and the inner cable 37a of the reverse cable 37 is indicated by the arrow f.
And the reverse bucket 36 is swung up h.

Turning the stroke expanding lever 79 to the right a
When the limit switch 76b is turned off at the turning end, that is, at the maximum loosening position (release position) of the operating lever 32, the electric motor 39 is stopped.

As described above, while the water jet propulsion watercraft 1 is running, by operating the operation lever 38, the reverse bucket 36 is swung downward or upward h, so that the propulsive force of the hull 4 can be arbitrarily adjusted. Since it can be controlled, the hull 4 can be stopped accurately and the berth can be smoothly landed.

Further, the inner cable 35a (clutch cable) is moved and reversed by the frictional force when the inner cable 35a (clutch cable) is relatively tightened to the spool 77 which is normally and reversely rotated by the electric motor 39. Since the bucket 36 is swung up or down g,
The swinging force of the reverse bucket 36 is assisted by the electric motor 39, so that the operation lever 35 can be operated with a light force. The electric motor 39, the spool 77, and the inner cable (clutch cable) 35a constitute a booster mechanism.

Further, the electric motor 39, the spool 77,
Since it is a mechanical structure such as the stroke enlargement lever 79,
Since an electronic control device as in the case of using a servo motor is not required, the operation reliability is high and the manufacturing cost is low.

Further, since the operation stroke of the operation lever 32 is enlarged by the stroke enlargement lever 79 to swing the reverse bucket 36 up and down, the reverse bucket 36 is swung up and down largely by a small gripping and loosening operation of the operation lever 32. Can be made.

Further, by the stroke expanding lever 79, the operation cable 35 by gripping the operation lever 32 is operated.
Of the inner cable 35a of the reverse bucket 36, the inner cable 37a of the reverse cable 37 of the reverse bucket 36 moves in the direction of e (the reverse bucket 36
In contrast to the movement of the inner cable 35a of the operation cable 35 in the d direction by loosening the operation lever 32, the inner cable 37a of the reverse cable 37 of the reverse bucket 36 moves in the f direction (reverse). The stroke enlargement lever 79 functions as a direction changing member together with the stroke enlargement because the stroke enlargement lever 79 can change its direction.

Further, the operation lever 32 is moved to the steering handle 12
Since it is mounted in the vicinity of the left hand grip 30 on the left side, the operability is improved in combination with the throttle lever mounted in the vicinity of the right hand grip of the steering handle 12.

The inner cable (clutch cable) 35a of the operation cable 35 is the rotating spool 7
Since it is constantly rubbed against No. 7, it is preferable to provide a sliding member 70 similar to that of FIGS. 7 to 9 of the first embodiment to take measures to prevent abrasion and improve durability.

In each of the above embodiments, the steering handle 12 is provided with the operation lever 32 for gripping and loosening, but it may be a foot pedal type for stepping with a foot or a hand lever type for raising and lowering with a hand.

[0082]

As is apparent from the above description, according to claim 1 of the present invention, the propulsive force of the hull can be arbitrarily controlled by operating the operation lever, so that the hull can be stopped accurately. It becomes possible to berth smoothly.

Further, since the clutch cable is moved by the frictional force when the clutch cable is tightened on the spool rotated by the electric motor to swing the reverse bucket up and down, the swinging force of the reverse bucket is assisted by the electric motor. , The operation lever can be operated lightly.

Further, the mechanical structure of the electric motor, spool, clutch cable, stroke enlarging member, etc., eliminates the need for an electronic control unit as in the case of using a servo motor, thus ensuring high reliability in operation and manufacturing. The cost will be low.

According to the second aspect of the present invention, as in the first aspect of the invention, the propulsive force of the hull can be arbitrarily controlled by operating the operation lever, so that the hull can be stopped accurately and smoothly. You will be able to land on the shore.

Further, the corresponding clutch cable is moved by the frictional force when the forward rotation clutch cable and the reverse rotation clutch cable are relatively fastened to the forward rotation spool and the reverse rotation spool which are continuously rotated by the electric motor. Since the reverse bucket is rocked up and down by the electric motor, the rocking force of the reverse bucket is assisted by the electric motor, and the operation lever can be operated with a light force.

Further, an electric motor, a forward / reverse rotation spool,
Since it is a mechanical structure such as forward / reverse clutch cable, input / output arm, stroke expanding member, etc., an electronic control device such as when using a servo motor is not required.
Highly reliable operation and low manufacturing cost.

Furthermore, since the electric motor can be continuously rotated, the responsiveness is improved as compared with the case where the electric motor is once stopped and is rotated forward or backward.

When the clutch cable is a wire (claim 3), a slip member is provided between the clutch cable and the spool, and when the clutch cable is a metal ribbon (claim 4), By baking a sliding material on the spool-side surface of this clutch cable, it is possible to prevent wear of the wire or the metal ribbon and improve the durability.

[Brief description of drawings]

FIG. 1 is a fragmentary side view of a water jet propulsion boat.

FIG. 2 is a perspective view of the cable clutch mechanism of the first embodiment.

3A is a plan sectional view of the cable clutch mechanism, and FIG. 3B is a simplified side view.

FIG. 4 is a schematic plan view of a spool portion of the cable clutch mechanism.

FIG. 5 is a circuit diagram of an electric motor.

FIG. 6A is a perspective view of a spool portion, and FIG.
(C) is a side view explaining the winding procedure of the spool and the cable.

FIG. 7 is a spiral sliding member, (a) is a perspective view,
(B) is a sectional view.

[FIG. 8] Outsert-molded sliding material,
(A) is a perspective view and (b) is a sectional view.

FIG. 9 is a brake shoe-shaped sliding member, (a)
Is a perspective view, and (b) is a sectional view.

FIG. 10 is a perspective view of the cable clutch mechanism of the second embodiment.

11A and 11B are circuit diagrams of the electric motor, in which FIG. 11A is a diagram showing a state in which the operating lever is released, and FIG. 11B is a diagram showing a state in which the operating lever is gripped.

FIG. 12 is a circuit diagram of the electric motor, in which (a) is a diagram of a maximum grip position of the operating lever, and (b) is a diagram of the operating lever in a loosened state.

[Explanation of symbols]

1 water jet propulsion boat 6 engine 10 Jet propulsion machine 12 steering wheel 19a injection nozzle 30 hand grip 32 Control lever 33 switch 35 Operation cable 35a inner cable 36 reverse bucket 37 Reverse cable 38A, 38B Cable clutch mechanism 39 Electric motor 58 Forward spool 59 Reverse spool 60 output arm 62 input arm 66 Forward rotation clutch cable 67 Reverse rotation clutch cable 70 sliding material 73 switch 77 spool 79 Stroke expansion lever

Claims (4)

[Claims] 1. A water jet propulsion watercraft that moves forward by injecting a jet flow generated by an engine-driven jet propulsion device rearward from an injection nozzle, and an electric motor that is driven in conjunction with operation of an operation lever, A spool rotated by this electric motor and a clutch cable wound around this spool are provided. When the clutch cable is moved by the frictional force when it is tightened on the spool by operating the operating lever, the stroke is expanded. A water jet propulsion boat characterized in that a reverse bucket is swung up or down via a member and a reverse cable. 2. A water jet propulsion boat that advances by injecting a jet flow generated by a jet propulsion machine driven by an engine rearward from an injection nozzle to turn on when a steering lever of a steering handle is held, and turn off when released. A switch, an electric motor driven when the switch is turned on and stopped when the switch is turned off, a forward rotation spool continuously rotated in the forward rotation direction and a reverse rotation spool continuously rotated in the reverse rotation direction by the electric motor, and the forward rotation spool. The forward rotation clutch cable wound around the rotation spool and the reverse rotation clutch cable wound around the reverse rotation spool, and one end of each of these clutch cables are connected, and the forward rotation is performed by the operation lever grip operation, and the forward rotation clutch cable is connected. Tighten the cable to the forward spool and at the same time loosen the reverse clutch cable from the reverse spool. Both of them are an input arm that moves one end of each clutch cable so as to reversely rotate by loosening the operation lever, loosen the forward rotation clutch cable from the forward rotation spool, and at the same time tighten the reverse rotation clutch cable to the reverse rotation spool. When the other end of each clutch cable is connected and the clutch cable is moved by the frictional force when one of the clutch cables is tightened to the corresponding spool, the other end is rotated normally or reversely. An output arm that is swung is provided, and when the output arm is normally swung together with the forward rotation clutch cable due to the frictional force when the input arm is normally swung by the grip operation of the operating lever and the forward rotation spool is tightened, The reverse bucket is swung downward through the stroke expanding member and the reverse cable,
When the output arm is reversely rotated together with the reverse rotation clutch cable due to the frictional force when it is fastened to the reverse rotation spool by the reverse rotation of the input arm by loosening the operation lever,
A water jet propulsion watercraft characterized in that a reverse bucket is swung upward through a stroke expanding member and a reverse cable. 3. The water jet propulsion watercraft according to claim 1, wherein the clutch cable is a wire, and a sliding member is provided between the clutch cable and the spool. 4. The water jet propulsion boat according to claim 1, wherein the clutch cable is a metal ribbon, and a sliding material is baked on the spool-side surface of the clutch cable.