JPH0132637Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a steering device for a small watercraft propelled by an inboard/outboard motor such as a water jet or a screw.

(Prior Art and Problems Therewith) Examples of small boats include motor boats, small water jet propulsion sports boats developed by the applicant, and small recreational boats of the pedal type used in amusement parks. be. This small sports boat propelled by an inland water jet is operated by a passenger 1 who stands on a boarding section 3 at the rear of the hull 2 and operates a handle 5 at the upper end of a handle pole 4, as shown in FIG. ing.

The structure of the steering device will be explained with reference to FIGS. 2 and 3. A pipe 5a bent in a dogleg shape is fixed to the lower surface of the rear end of a plate-shaped handle holder 6 via a clamp member 7. and pipe 5
Rubber grips 5b are fitted and fixed to the grips at both ends of the plate-shaped handle holder 6.
is rotatably supported by a pin 10 which is arranged in a cutout step 4a on the lower surface of a plate-shaped handle pole 4 covered by a cover 8 (Fig. 1) and has screws 9 and 9' formed on both the upper and lower sides. are doing. That is, with the bush 11 having an L-shaped cross section fitted into the pin hole 6a bored at the front end of the handle holder 6, the upper pin 10 is aligned with the threaded hole 4b at the upper end of the handle pole 4.
are inserted and screwed together, and nuts 12, 12' are tightened on the upper and lower screws 9, 9' of the pin 10 to rotatably support the pin 10.

By the way, in such a conventional steering device, the plate-shaped handle holder 6 is simply disposed in the cutout step 4a on the lower surface of the plate-shaped handle pole 4 and rotatably supported by the pin 10. , Bushiyu 11
Impact on the hull due to waves during operation, engine drive and nozzle 13 (see Figure 1)
In some cases, the rotating support portion of the handle holder 6 rattled due to vibrations of the hull 2 caused by the water jet ejected from the handle holder 6. This steering device also includes a handle pole 4, its cover 8 (first
(see figure), handle holder 6, handle pipe 5a, rubber grip 5b, and their supporting and mounting parts.
Assembling requires a large number of man-hours and costs are extremely high.

(Purpose of the invention) The present invention has been made to solve such inconveniences, and is designed to rotatably support the handle, which is an integrated handle holder and handle, on the upper end of the handle pole to prevent rattling. west,
Another object of the present invention is to provide a steering device for a small watercraft with a reduced number of component parts.

(Construction of the invention) a. The handle pole of a small watercraft is constructed in the shape of a rectangular tube.

b. A circular hole is formed in the center of the upper end of the square cylindrical handle pole so that it can pass through the upper and lower surfaces.

c Upper and lower 2 with a handle formed on the outer circumferential side with a bush interposed on the inner circumferential surface of the circular hole and the surrounding upper and lower surfaces.
A pair of ring-shaped hollow handles are fitted and rotatably supported.

(Embodiment) An embodiment of the steering device for a small watercraft according to the present invention will be described with reference to FIGS. 4 and 5. In the figure, reference numeral 15 denotes a handle pole that is rotatably installed in the front and rear directions at the bow of the hull 2 shown in FIG. 1, and is configured in a rectangular tube shape. The handle pole 15 is curved toward the stern, its upper end is substantially horizontal, and a stepped portion 16 is formed on its upper and lower surfaces as shown in FIG. 5 to form a flat cylindrical shape. At the center of the upper end of this flat cylindrical handle pole 15, a circular hole 17 is formed which can pass through the upper and lower surfaces. A bush 18 is interposed on the inner peripheral surface and upper and lower surfaces of the hole 17, and as shown in FIG. 4, an annular hollow handle 20 having a grip portion 19 formed on the outer peripheral side is fitted and rotatably supported. ing.
As shown in FIG. 5, the bushing 18 is horizontally divided into upper and lower halves, and each is fitted into the hole 17 from both the upper and lower sides, and the annular hollow handle 20 is also horizontally divided into upper and lower halves. The bottoms of the circular recesses 21 fitted into the holes 17 from above and below are brought into contact with each other and fastened with bolts 22 and nuts 23. The grip portion 19 on the outer circumferential side of the handle 20 is also horizontally divided into two parts, with a spacer 24
It is fastened with a bolt 22 and a nut 23 with . 25 is a rubber grip fitted and fixed to the grip portion 19.

(Function) As shown in FIG. 1, the steering system for a small watercraft of this embodiment configured as described above is designed so that during operation, the passenger 1 stands on the boarding section 3 at the rear of the hull 2, 5
The operator grasps the rubber grip 25 of the grip portion 19 of the annular hollow handle 20 at the upper end of the rectangular cylindrical handle pole 15 shown in the figure, and rotates the handle 20 as appropriate to operate.

When the handle 5 is rotated, the handle 20 is fitted via the bush 18 into the inner circumferential surface and upper and lower surfaces of the circular hole 17 bored in the center of the flat square cylindrical upper end of the handle pole 15. The handle 20 is rotatably supported so as to sandwich the upper end of the flat rectangular cylindrical shape, and the rotating sliding portion of the handle 20 touches the inner peripheral surface of the hole 17 and the periphery of the hole 17. It has three sides, top and bottom. Therefore, even if the hull 2 (see Figure 1) receives a shock from waves during operation, or vibrations are generated in the hull 2 due to the engine drive and water jet spouting from the nozzle 13 (see Figure 1), the steering wheel will not move. There is almost no rattling in the rotation support part 20.

(Effects) As can be seen from the above explanation, in the steering device for a small watercraft of the present invention, the rotating sliding portion of the annular hollow handle is attached to the inner peripheral surface of the circular hole at the upper end of the square cylindrical handle pole. Moreover, the handle is rotatably supported on the upper end of the handle pole so as to sandwich the upper end of the handle pole from the inside of the hole, so the hull is protected from shocks caused by waves etc. during operation. However, even if vibrations occur in the hull due to engine drive or water jet spraying, there is almost no rattling in the rotating support portion of the handle.

The steering device for a small boat of the present invention includes a square cylindrical handle pole, an annular hollow handle made of two upper and lower handles, a grip that fits into a grip portion integrally formed with the handle, and a handle pole. It consists of an annular bushing interposed in the rotating sliding part of the
Unlike conventional steering devices, there is no need for a cover for the plate-shaped handle pole, a handle holder, a clamp member for mounting the handle, a handle holder rotation support member, etc., and the number of component parts is significantly reduced, making it easier to manufacture.
Assembly is simple with fewer man-hours, and costs are significantly reduced.

Furthermore, since the handle pole is square and cylindrical, and the handle is annular and hollow, the strength is improved compared to conventional steering devices.In addition, there are various operating and control devices and their wiring inside them. It is possible to incorporate cables and the like, and has the effect of protecting them from seawater and the like.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing a small watercraft, Fig. 2 is a bottom view showing the main parts of a steering device in a conventional small watercraft, Fig. 3 is a sectional view taken along the line A-A in Fig. 2, Fourth
The figure is a plan view showing the main parts of the steering device in the small watercraft of the present invention, and FIG. 5 is an enlarged sectional view taken along the line B--B in FIG. 4. 15...handle pole, 17...hole, 18...
...Button, 19...Grip part, 20...Annular hollow handle.

Claims (1)

[Scope of utility model registration request] The handle pole of a small boat is configured in a rectangular tube shape,
A circular hole is formed in the center of the upper end of the handle pole to pass through the upper and lower surfaces, and a grip is formed on the outer periphery by interposing a bush on the circumferential surface of the circular hole and on the surrounding upper and lower surfaces. A steering device for a small watercraft comprising a hollow annular handle fitted and rotatably supported.