JP2002154479A - Remote control system and transmitter of motored-surf board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote control system of a motored-surf board usable in the hand free state and a transmitter used therein. SOLUTION: A signal from the transmitter 34 fitted to one hand of a crewman of the motored-surf board 1 formed by accommodating an engine and a jet propeller driven by it in a hull is received by a receiver provided on the hull 2 side to thereby control the engine. According to the invention, the crewman operates the transmitter 34 fitted to one hand to control the engine, so that the crewman can ride in the standing posture with both hands free (hands free state) to use the power surf board 1 in its natural form.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control system for a surfboard with an engine in which an engine and a jet propulsion device driven by the engine are housed in a hull, and a transmitter used for the system.

[0002]

2. Description of the Related Art A surfboard with an engine, in which an engine and a jet propulsion device driven by the engine are housed in a hull, slides on water by thrust generated in the jet propulsion device. The throttle of the engine is operated by operating the accelerator lever provided on the handlebar standing upright or the accelerator lever provided on the operation grip provided on the other end of the operation wire having one end fixed to the front of the hull. The speed and the like were controlled by adjustment (see, for example, Japanese Patent No. 2870639, Japanese Patent Publication No. 6-96398, and Japanese Patent Publication No. 63-66716).

[0003]

However, surfboards that are not equipped with an engine are generally used in such a manner that an occupant stands on the vehicle with both hands free (a so-called hands-free state). It was impossible to use such an original form with a surfboard with an engine.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a purpose thereof is to provide a remote control system for a surfboard with an engine that enables the surfboard with an engine to be used in a hands-free state. To provide a transmitter.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, according to the present invention, an engine and a jet propulsion machine driven by the engine are housed in a boat body with one hand of a passenger of a surfboard with an engine. The engine is controlled by receiving a signal from a grasped or attached transmitter by a receiver provided on the hull side.

According to a second aspect of the present invention, a transmitter mounted on one hand of an occupant of an surfboard with an engine, which houses an engine and a jet propulsion device driven by the engine in a hull, is operated by the occupant's finger. It is characterized by comprising a lever, a detecting means for detecting a displacement amount of the lever and outputting a signal corresponding to the magnitude thereof, and a power supply.

According to a third aspect of the present invention, there is provided a surfboard with an engine, which includes an engine and a jet propulsion device driven by the engine in a hull, and a transmitter held by one hand of an occupant. It is characterized by comprising a detecting means for detecting pressure and outputting a signal corresponding to the magnitude, and a power supply.

Therefore, according to the present invention, since the occupant can control the engine by operating the transmitter gripped or attached to one hand, the occupant can stand with both hands free (in a hands-free state). The rider can use the surfboard with engine in the original form of the surfboard.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view of a surfboard with an engine.
FIG. 2 is a plan view of the surfboard with the engine.

A surfboard with an engine (hereinafter simply referred to as a surfboard) 1 shown in FIGS. 1 and 2 has a power unit 3 arranged in a rear space inside a streamlined flat hull 2. Here, the power unit 3 is configured by integrating the horizontally opposed engine 4 and the jet unit 5, and the details of the configuration will be described later.

A floor deck 2a which forms a horizontal plane is formed on the upper surface of the hull 2 in front of the power unit 3, and an air intake section 6 is fixed on the front end of the hull 2. I have. Here, front and rear of the air intake section 6 are open, and an intake pipe 7 is erected inside the opening.

On the other hand, a fuel tank 8 is disposed substantially at the center in the front-rear direction in the hull 2, and a starter motor 9 and a battery 10 are disposed on the left and right behind the fuel tank 8, respectively.

A rectangular box-shaped air separator 11 is arranged at the center in the width direction in the space in front of the fuel tank 8 in the hull 2, and the front end of the air separator 11 communicates with the intake pipe 7. A first intake duct 13 extending rearward from the left and right of the intake chamber 12 is connected. A second intake duct 14 extends from the front lower surface of the air separator 11, and a drain pipe 15 extending laterally from both rear side surfaces of the air separator 11 opens to both sides of the hull 2. are doing. The second intake duct 14 is open to a space in the hull 2.

Next, the configuration of the power unit 3 will be described in detail with reference to FIGS. 3 is a side sectional view of a power unit portion of the surfboard, and FIG. 4 is a plan sectional view of the power unit portion.

The power unit 3 is constructed by integrating the horizontally opposed engine 4 and the jet unit 5 as described above. The horizontally opposed engine 4 is a two-cycle two-cylinder engine, as shown in FIG. A cylinder 17 is horizontally arranged on the left and right sides of a crankshaft 16 arranged in the front-rear direction at the center in the width direction of the hull 2. Here, a piston 18 is slidably inserted in each cylinder 17 in a horizontal direction, and each piston 18 is connected to the crankshaft 1 via a connecting rod 19.
6, the reciprocating linear motion of each piston 18 in the cylinder 17 is converted by a connecting rod 19 into a rotational motion of a crankshaft 16.

A spark plug 20 is screwed to the outer end surface of each cylinder 17, and the upper part of a crankcase 21 disposed between the two cylinders 17, as shown in FIG. And a carburetor 23 is provided at a front end of the intake pipe 22. The intake pipe 22
A reed valve (not shown) is provided in a portion of the crankcase 21 which opens to the crank chamber. A flywheel magneto 24 is attached to the front end of the crankshaft 16 projecting forward from the crankcase 21, and a ring gear 25 is attached to the front end surface of the flywheel magneto 24. Gear 9a can be meshed.

On the other hand, the exhaust system of the horizontally opposed engine 4 is connected to an exhaust pipe 27 protruding from the lower rear of the hull 2, and the exhaust pipe 27 is connected to exhaust mufflers 28 provided on the left and right sides of the jet unit 5. It is connected. Exhaust gas discharged from the horizontally opposed engine 4 passes through an exhaust pipe 27 and is introduced into an exhaust muffler 28, and then the exhaust port 28a
Is discharged into the water.

A carburetor 23 is provided with a throttle valve (not shown) in the carburetor 23.
A receiver 26 is installed near 3. The receiver 26 includes a transmitter 34 (FIGS. 6 to 10) according to the present invention described later.
The engine 4 is started by driving the starter motor 9 in response to the signal from the controller 4 to start the engine 4 and controlling the drive of an actuator (not shown) such as a stepping motor to adjust the opening of the throttle valve. Or
The power supply to the ignition system is interrupted to stop the engine 4.

Next, the structure of the jet unit 5 will be described.

The jet unit 5 is constructed by mounting an impeller 31 on an impeller shaft 30 disposed in the pump housing 29 in the front-rear direction, and mounted on the inner peripheral surface of the pump housing 29 behind the impeller 31. A plurality of straightening plates 32 are arranged. The nozzle 33 attached to the rear end of the pump housing 29 is
It opens from the back to the water.

Incidentally, the impeller shaft 30 is coaxially and directly connected to the crankshaft 16 of the horizontally opposed engine 4 by a coupling 70, and the two are centered when the engine 4 and the jet unit 5 are mounted on the base plate 71. You.

FIG. 5 shows how the power unit 3 is attached to the hull 2. An opening 2 b is formed at the rear of the hull 2 as shown in FIG. The power unit 3 is assembled to the hull 2 by installing the base unit 3 from below and bolting the periphery of the base plate 71 to the lower surface of the hull 2. At the time of assembly, the left and right spark plugs 20 of the horizontally opposed engine 4 are removed.

By the way, in the surfboard 1 according to the present embodiment, the occupant gets on and off from the rear part of the hull 2, but in the present embodiment, the horizontally opposed engine 4 is used as a drive source of the power unit 3, so that the The height of the rear part is kept low, so that getting on and off the surfboard 1 from the rear part of the hull 2 is facilitated and the getting on and off property is enhanced.
The engine vibration is kept low and the occupant's discomfort is eliminated.

In the surfboard 1 according to the present embodiment, since the power unit 3, which is a heavy object, is disposed at the rear of the hull 2, the turning radius of the surfboard 1 is reduced, and the turning performance is improved. .

Here, a remote control system according to the present invention will be described with reference to FIG.

FIG. 6 is a perspective view showing a use form of the surfboard 1. As shown in FIG. 6, the occupant stands on the floor deck 2a of the hull 2 of the surfboard 1, and the transmitter 34 attached to one hand. By controlling the driving of the engine 4 by operating the finger with a finger, it is possible to glide on the water while adjusting the glide speed and the like.

When the occupant operates the transmitter 34 to drive the starter motor 9, the horizontally opposed engine 4 is started, and is pulled down by the negative pressure generated during the intake stroke of each cylinder 17 of the horizontally opposed engine 4. Thus, air is introduced from the air intake section 6 to the intake pipe 7. In the air intake section 6, the moisture contained in the air is temporarily removed, and only the air from which the moisture has been primarily removed is introduced into the intake pipe 7.

Then, the air introduced into the intake pipe 7 branches right and left from the intake chamber 12, passes through the first left and right intake ducts 13 and is introduced into the air separator 11, and the air introduced into the air separator 11 is After the water is removed, the water is discharged from the second intake duct 14 into the space in the hull 2 and is sucked by the carburetor 23. The water separated from the air in the air separator 11 is discharged from the air separator 11 to the outside of the hull 2 through the drain pipes 15 on the left and right sides.

In the carburetor 23, an air-fuel mixture is formed by mixing the air and the fuel. The air-fuel mixture is introduced into the crankcase 21 of the horizontally opposed engine 4 through a reed valve (not shown) in the intake pipe 22. Then, after being primarily compressed in the crank chamber of the crankcase 21, it is supplied to each cylinder 17 for combustion.

The exhaust gas generated by the combustion of the air-fuel mixture is discharged from the exhaust pipe 27 through the exhaust muffler 28 into the water through the exhaust port 28a at the rear of the hull 2 as described above.

The horizontal opposing engine 4 is continuously operated by repeating the above operation. The rotation of the crankshaft 16 of the engine 4 causes the impeller shaft 30 of the jet unit 5 and the impeller attached thereto to rotate. The rotation of the impeller 31 causes the water sucked by the rotation of the impeller 31 to be jetted rearward from the nozzle 33, and the surfboard 1 is driven by the thrust generated by the jet of water rearward. Glide over the water. It should be noted that the surfboard 1 is turned to the left and right by the hull 2 of the occupant.
This is done by changing the attitude above.

Next, the configuration of the transmitter 34 according to the present invention will be described with reference to FIGS. 7 is a side view of the transmitter, FIG. 8 is a partially cutaway plan view of the transmitter with a cover removed, FIG. 9 is a rear view of the transmitter, and FIG. 10 is an exploded perspective view of the transmitter. It is.

In the drawing, reference numeral 35 denotes a case integrally formed of resin. In this case 35, a shaft 37 for supporting an operation lever 36 and a space S for accommodating a potentiometer 38 are provided.
1 and a space S2 for accommodating two dry batteries 39 and a space S3 for accommodating the substrate 40. These spaces S1, S2, and S3 have detachable covers 41 and 42 made of resin. , 43 (see FIG. 10) are respectively applied. As shown in FIG. 9, the bottom surface of the case 35 is formed in a concave curved shape according to the shape of the back of the occupant's hand, and a band 44 is attached to the case 35 as shown in FIG.

The space S1 of the case 35 is partitioned into chambers S11 and S12 by a partition 35a.
A potentiometer 38 is housed in one chamber S11. The input shaft of the potentiometer 38 is rotatably inserted into and supported by a circular hole 35b (see FIG. 10) formed in the partition wall 35a, and is connected to one end of a shaft 37 housed in the other chamber S12. And is fixed to the shaft 37 by a nut 45. As shown in FIG. 10, a screw 46 for preventing rotation is screwed to one end of the shaft 37.

The shaft 37 has a bearing 47 at the other end.
A return spring 48 is wound around an inner portion of the bearing 47 of the shaft 37, and a seal ring 49 is wound around an outer portion of the bearing 47.
Is installed. A base of the operation lever 36 is screwed to an end of the shaft 37 extending out of the case 35. The base of the operation lever 36 has a screw 50 for preventing rotation as shown in FIG. Is screwed. In addition, shaft 3
The operation lever 3 is operated by the return spring 48.
6 is urged in the direction of turning upward (throttle closing direction).

As shown in FIG. 7, the operation lever 36 is bent in a side view shape, and an intermediate portion of a columnar operation portion 36a disposed in the lateral direction is connected to an end of the operation lever 36. Have been. At the base of the operation lever 36, a stopper 36b is provided so as to be in contact with the case 35 and to restrict the upward rotation of the operation lever 36 (see FIG. 10).

In the space S2 of the case 35, the partition 3
5c is divided into two chambers S21 and S22, and metal springs 51 and metal plates 52, which are terminals, are alternately attached to the longitudinal ends of the chambers S21 and S22. When the dry batteries 39 are respectively housed in S22, the positive and negative poles of the dry batteries 39 abut on the metal plate 52 and the metal spring 51, respectively, and become conductive, and the cover 42 is covered and provided on the cover 42. Screw 53
And the screw is screwed into a screw hole 54 (see FIGS. 8 and 10) formed in the boss of the partition wall 35c, whereby the cover 42 is attached to the case 35 in a liquid-tight manner. The replacement of the dry battery 39 is easily performed by loosening the screw 53 and removing the cover 42.

Further, the board 40 is accommodated in the space S3 of the case 35. The board 40 has a main switch 55 and an engine stop switch 56 arranged side by side, and an electric circuit incorporated therein. . Then, with the substrate 40 housed in the space S3, the cover 43
Is mounted on the case 35 in a liquid-tight manner, and the substrate 40 is covered by the cover 43.
0 to operate the main switch 55 and the engine stop switch 56.
An antenna lead wire 59 is incorporated on the back surface of the cover 43 (see FIG. 10).

Thus, the transmitter 3 configured as described above
4 has a waterproof structure, and also incorporates a floating body (not shown) so as to float on water assuming that it comes off the hand,
Alternatively, the weight and volume are set.
As shown in (1), the occupant is used by being attached to one hand of the occupant, so that the occupant does not sink in the water even if the occupant comes off his hand due to the momentum of falling water. The transmitter 34 is fixed on the back of one hand (usually the right hand) of the occupant by a band 44, and the occupant sandwiches the operation lever 36 extending forward between the middle finger and the index finger as shown in FIG. The operation lever 36 can be pivotally operated by being pushed downward. The band 44 is fixed to the hand by using a magic tape (registered trademark), a buckle or the like, or by using a rubber band.

When the engine 4 is idling, the surfboard 1 is stopped. However, as described above, when the occupant turns the operation lever 36 downward with the middle finger and the index finger, the rotation of the operation lever 36 is not shown. 8 is transmitted to a potentiometer 38 via a shaft 37, and the potentiometer 38 sends a signal proportional to the amount of rotation of the shaft 37 to the substrate 40. The substrate 40 transmits the signal from an antenna lead wire 59 (see FIG. 10) to a surfboard. The signal is transmitted to the receiver 26 on the first side (see FIG. 3). Then, the receiver 26 receives the signal and drives and controls an actuator (not shown), whereby the opening of a throttle valve (not shown) provided in the carburetor 23 is adjusted, and the engine speed is controlled.
The sliding speed of the surfboard 1 is adjusted.

The start and stop of the engine 4 are controlled by the transmitter 3
The remote control can be performed by operating the main switch 55 and the engine stop switch 56 on the board 40 via the flexible members 57 and 58 provided on the cover 43 of FIG.

As described above, in the remote control system according to the present invention, as shown in FIG.
While standing on the floor deck 2a of the hull 2, the driver of the engine 4 can be controlled by operating the transmitter 34 attached to one hand with a finger, so that the occupant can hold both hands free ( The surfboard can be used in its original form while standing in a hands-free state).

By the way, when the occupant surfboard 1
When getting on the surfboard 1 or carrying the surfboard 1 on the ground, release the finger from the operation lever 36 with the transmitter 34 fixed to one hand as shown in FIG. 12, and use the surfboard 1 with all five fingers. You can grab one.

For example, when the occupant rides on the surfboard 1 with the stomach prone and slides on the surfboard 1, the operation lever 36 of the transmitter 34 is operated with the middle finger and the index finger as shown in FIG. The surfboard 1 can be held by another finger.

Next, another embodiment of the transmitter is shown in FIG.
The illustrated transmitter 34 ′ has a grip shape to be gripped by an occupant, and is connected to a band 60 fixed near a wrist of one hand of the occupant by a string 61.
Thus, even if the occupant releases his hand from the transmitter 34 ', the transmitter 34' will not be submerged.

A stroke-type accelerator lever 62 is provided on the side of the transmitter 34 ', and the engine speed is controlled by the occupant pressing the accelerator lever 62 with the index finger as shown in the figure. The sliding speed of the surfboard 1 is adjusted. That is, although not shown, a dry battery as a power supply, a circuit board having a transmission function, a detecting means for detecting the amount of displacement of an accelerator lever, and the like are incorporated in the transmitter 34 ', and the accelerator detected by the detecting means is included. A signal corresponding to the amount of displacement of the lever 62 is transmitted from the transmitter 34 'to the receiver 26 (see FIG. 3) on the surfboard 1, whereby the opening of the throttle valve is adjusted as described above, and the engine speed is increased. Is controlled.

Although only a typical example of a transmitter has been described above, the remote control system according to the present invention may have any other form using a piezoelectric element or the like for detecting an occupant's operation force as a detecting means. A transmitter can be employed.

[0049]

As is apparent from the above description, according to the present invention, the engine and the jet propulsion device driven by the engine are gripped or attached to one hand of the occupant of the surfboard with the engine, which is accommodated in the hull. The engine is controlled by receiving a signal from the transmitter on the receiver provided on the hull side, so that the occupant can operate the transmitter gripped or attached to one hand to control the engine. This has the effect that the occupant can stand up with both hands free (in a hands-free state) and can use the surfboard with engine in that form.

[Brief description of the drawings]

FIG. 1 is a side view of a surfboard with an engine.

FIG. 2 is a plan view of a surfboard with an engine.

FIG. 3 is a side sectional view of a power unit portion of a surfboard with an engine.

FIG. 4 is a plan sectional view of a power unit portion of the surfboard with an engine.

FIG. 5 is a perspective view showing how to attach a power unit to a hull in a surfboard with an engine.

FIG. 6 is a perspective view showing a use form of a surfboard with an engine for explaining a remote control system according to the present invention.

FIG. 7 is a side view of a transmitter according to the present invention.

FIG. 8 is a cutaway plan view of the transmitter according to the present invention with the cover removed.

FIG. 9 is a rear view of the transmitter according to the present invention.

FIG. 10 is an exploded perspective view of a transmitter according to the present invention.

FIG. 11 is a perspective view showing a use form of the transmitter according to the present invention.

FIG. 12 is a perspective view showing a use form of the transmitter according to the present invention.

FIG. 13 is a perspective view showing a use form of the transmitter according to the present invention.

FIG. 14 is a perspective view showing a use form of a transmitter according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Surfboard with engine 2 Hull 3 Power unit 4 Horizontally opposed engine (engine) 5 Jet unit (jet propulsion) 26 Receiver 34 Transmitter 34 'Transmitter 36 Control lever 38 Potentiometer (detection means) 39 Dry battery (power supply) 62 Accelerator lever

Claims (3)

[Claims] 1. A receiver provided on a hull side with a signal from a transmitter held or attached to one hand of an occupant of an surfboard equipped with an engine in which an engine and a jet propulsion device driven by the engine are housed in a hull. A remote control system for a surfboard with an engine, characterized in that the engine is controlled by receiving the signal from the surfboard. 2. A transmitter mounted on one hand of an occupant of an engine-equipped surfboard containing an engine and a jet propulsion device driven by the engine in a hull, wherein the lever is operated by an occupant's finger. A transmitter for a surfboard with an engine, comprising: a detecting means for detecting a displacement amount of a lever and outputting a signal corresponding to the magnitude thereof; and a power supply. 3. A transmitter which is held in one hand of an occupant of an surfboard with an engine, wherein the engine and a jet propulsion device driven by the engine are housed in a hull, and detects an operation amount or a pressing force of the occupant. A transmitter for a surfboard with an engine, comprising: a detection means for outputting a signal corresponding to the magnitude of the signal; and a power supply.