JPH0419076B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an improvement of a steering handle device for a jet propulsion type small watercraft.

<Conventional technology and its problems> In general, in jet propulsion type small boats that glide freely on the water surface, one operator stands on the floor deck of the boat and uses a handlebar gripped with both hands. By turning the bar, you can control the steering cable that is routed from the handle post through the inside of the boat to the stern, and swing the steering nozzle of the jet propulsion device installed at the stern in the left and right directions. However, as is clear from Figures 8 and 9, in conventional boats, the handle post (a)
A pair of left and right handlebars extending from the top of the rear end
In particular, the grip portions (c) in (b) are arranged horizontally in an overall V-shape when viewed from above.

Therefore, when the boat body (d) turns, the operator's body is swung around as if the operator's hand holding the grip part (c) is held laterally, which is a significant disadvantage. Being forced to maintain a stable control posture makes it impossible to operate smoothly and stably.
Also, since the grip position opens both sides of the body,
Ergonomically, it is not possible to apply treading force due to body weight to the boat body (d) effectively and as desired, and there is a problem that the so-called quick steering performance is also inferior.

<Means for Solving the Problems> The present invention is intended to solve these various problems, and for this purpose, a base plate for attaching the handle is fixed to the upper rear end of the handle post that stands up from the hull. In a jet propulsion type small watercraft, the handlebar mounting plate, which has a wide-rear V-shape when viewed from above, is rotatably supported on the base plate by a vertical axis. A pair of handle grips are fitted to both the left and right ends of the bar in an upright position along a plane orthogonal to the installation plane of the bar, and the torsional deformation of the elastic cylinder inserted and fixed at the fitted position Accordingly, the grip is set so as to be able to forcibly raise and lower at a certain angle in the front and back direction around the longitudinal axis of the handlebar.

<Example> Hereinafter, the specific structure of the present invention will be described in detail based on the illustrated example. In FIG. 1, which shows the overall outline of the jet propulsion type small watercraft, 10 is made of fiber reinforced plastic (FRP), etc. The boat body is made of the same material and has a completely hollow and closed float structure, and almost the rear half of the boat body is defined as a floor deck 11 on which the operator stands. 12 is an engine room divided into the remaining front half, 13 is also connected to the bow of the hull 10 by a horizontal shaft 14,
It is a handle post that is pivoted so that it can be raised and lowered around it, and at the upper part of the rear end facing the floor deck 11, there is a base plate 15 for attaching the handle.
It is, so to speak, fixed and integrated with the backing from below.

A control handle device as described below is assembled to the base board 15. That is, in FIGS. 2 to 6, which are extracted and enlarged, 16 is a mounting plate for the handlebar 17, which is composed of an assembly of a front plate 16a and a rear plate 16b. Handlebar 17, which is shaped like a wide rectangle in plan view
is fixedly installed by welding etc.

Further, the front plate 16a is joined to the base board 15 from below and is pivoted around a vertical shaft 18 so as to be able to be steered therearound. Of course, the vertical axis 18 faces the center line (Y-Y) of the boat 10, but in the middle of the front plate 16a, which is eccentrically positioned laterally,
A starting end of the steering cable 19 is attached. Needless to say, the terminal end of the cable 19 is connected to a steering nozzle (not shown) at the stern of the boat via the handle post 13 and the interior of the boat body 10.

Reference numeral 20 designates adjustment screw holes arranged in a plurality of pairs on the left and right sides at the rear end of the front plate 16a.
is formed corresponding to the front end of the rear plate 16b. Therefore, from the blank hole 21 to the screw hole 2
By replacing and screwing the fixing bolts 22 into 0, the connecting position of the rear plate 16b to the front plate 16a can be adjusted in a so-called telescopic manner. In other words, the handlebar 17 attached to the rear plate 16b is adjusted to be long or short according to the length (mounting position) L of the handlebar 17 extending rearward from the vertical shaft 18.

However, the mounting plate 16 of the handlebar 17
is a pair of front and rear plates 16a, 16 like this.
It is not limited to an assembly consisting of b, but it is also possible to create it as a continuous integral piece thereof in advance. In addition, 23
is a notch that defines the rotation angle of the mounting plate 16 with respect to the vertical axis 18, and the front plate 16
It is attached to the front edge of a. Fixing bolt 22
It is also possible that there are multiple pairs of left and right pairs.
This is as suggested by the example.

The handlebar 17 is made of a round metal pipe material, and has a rectangular tube portion 24 with a small diameter and a male thread 25 formed at both left and right ends thereof. On the other hand, reference numeral 26 designates a pair of left and right handle grips 26 made of metal round pipe material, and an outer cylinder 27 is integrally welded to the intermediate portion along the longitudinal direction of each handle grip 26 so as to pass orthogonally therethrough. Reference numeral 28 denotes a rectangular inner cylinder that corresponds and matches the square cylinder part 24 of the handlebar 17, and a rubber material having appropriate rigidity and elasticity is provided in the mutual gap between the inner cylinder 28 and the outer cylinder 27. A resilient tube 29 made of synthetic resin or the like is press-fitted into one piece.

The grip 26 is attached to the handlebar 17 so as to be unrotatable and detachable through the engagement between the inner tube 28 and the square tube portion 24 of the handlebar 17. It is fixedly locked by a fixing nut 30 that is screwed into the male thread 25 of the handlebar 17 from the outside. 31 is a washer, and 32 is an end cap integrally attached to both ends of the grip 26.

The grip 26 stands on a plane perpendicular to the installation plane XX of the handlebar 17, but the undulation angle θ with respect to the installation plane XX can be adjusted in advance by replacing the grip 26 with respect to the handlebar 17. It can be installed and fixed while adjusting the humidity. Moreover, even when the inner cylinder 28 and the outer cylinder 27 are installed and fixed under any initial undulation angle θ, since the elastic cylinder 29 is press-fitted between the inner cylinder 28 and the outer cylinder 27, When a forcible rotational force is applied to the grip 26 in the front-rear direction from the attached state, the elastic cylinder 29 twists and deforms due to its own elasticity, causing the grip 26 to move along the longitudinal axis of the handlebar 17 as shown in FIG. This results in an undulating action of a certain constant angle γ in the front-rear direction around the axis.

In other words, when the operator of the boat 10 strongly rotates the grip 26 in the front-back direction, the grip 26 rises and falls by a certain predetermined angle γ due to the torsional deformation of the elastic cylinder 29. This is how it has become. Therefore, if this purpose can be achieved, the elastic tube 29 can be used, for example, as the outer tube 27 of the grip 26 or its outer tube 2.
7 and the inner cylinder 28 may be baked in advance to integrate them.

Further, in order to fix the grip 26 so that it does not come off, a fixing nut 30 is screwed onto the male thread 25 of the handlebar 17 in FIG. 5, but as is clear from FIG. Screw holes 33 may be formed at both left and right ends of the screw 17, and fixing bolts 34 may be screwed into the screw holes 33.

Furthermore, in the illustrated example, the grip 26 is long and horizontally T-shaped and intersects with the handlebar 17 when viewed from the front and back direction of the boat body 10. By installing the tube 29 as an accessory, the handlebar 17 can also be
It is also possible to install it in an L-shape that intersects with the Note that the grip 26 may be provided with an elastic coating (not shown).

<Effects of the Invention> As described above, in the present invention, the base plate 15 for attaching the handle is fixedly installed at the upper rear end of the handle post 13 that stands up from the boat body 10, and the handlebar is not widened at the rear as a whole in plan view. In a jet propulsion type small watercraft, in which a mounting plate 16 of a handlebar 17 having a shape of a letter is rotatably supported on the base board 15 by a vertical shaft 18, a pair of mounting plates are attached to both left and right ends of the handlebar 17. The handle grip 26 is fitted in a non-rotatable manner and in an upright position along a plane perpendicular to the installation plane XX of the bar 17, and the torsional deformation of the elastic tube 29 inserted and fixed in the fitted position allows Since the grip 26 is configured to be forcibly raised and lowered by a certain angle γ in the longitudinal direction of the handlebar 17, all of the problems of the prior art described at the beginning are solved. be able to.

That is, the pair of left and right handle grips 26 stand on a plane perpendicular to the installation plane X-X of the handlebar 17, and are rotated in the front-rear direction about the longitudinal axis of the handlebar 17, so that the grips 26 stand on a plane perpendicular to the installation plane X-X of the handlebar 17. Since the grip 26 can be attached to the handlebar 17 while adjusting the elevation angle θ with respect to It is possible to effectively add weight to the body 10 or to transfer the weight smoothly, and in this maneuvering position, both sides of the body are automatically kept in a tight state, so the boat body There is no fear of the body shaking during the 10 turns, and the effect is that the maneuvering is extremely stable and nimble. This effect can be brought out more markedly by adjusting the initial undulation angle θ of the grip 26 according to the driver's preference and posture.

In particular, when the handle grip 26 is forcibly rotated from its pre-installed state, the grip 26 twists around the longitudinal axis of the handlebar 17 at a certain angle γ in the front-rear direction. For example, with your right hand, you can push the grip 26 forward, and with your left hand, you can press the grip 26 forward.
When turning the boat 10, as in the case of flipping the boat 6 backwards, the ergonomically controlled posture can be maintained in a reasonably stable state, and the weight can be added and moved in an extremely rational and efficient manner. It can be done.
In this sense, it is extremely useful for use in jet-propelled planing boats that can be operated while standing.

[Brief explanation of drawings]

Fig. 1 is an overall schematic side view of a jet propulsion type small watercraft according to the present invention, Figs. 2 and 3 are a plan view and a side view showing the operating handle device in an enlarged manner, and Fig. 4
The figure is a sectional view taken along the line 4-4 of Fig. 2, Fig. 5 is an enlarged sectional view taken along the line 5-5 of Fig. 2, and Fig. 6 is an enlarged sectional view taken along the line 5-5 of Fig. 2.
FIG. 7 is a partial sectional view showing a modification corresponding to FIG. 5, and FIGS. 8 and 9 are a plan view and a side view showing a conventional control handle device. 10...Hull, 11...Floor deck, 13
...Handle post, 14...Horizontal axis, 15...
Base board, 16...Mounting plate, 16a...Front plate, 16b...Rear plate, 17...
Handlebar, 18...Vertical axis, 22...Fixing bolt, 26...Handle grip, 27...Outer cylinder, 28...Inner cylinder, 29...Elastic cylinder, 30...Fixing nut, X-X...Installation Plane, θ... undulation angle, γ... constant angle.

Claims (1)

[Scope of Claims] 1. A handlebar having a handlebar mounting base plate 15 fixedly installed at the upper rear end of a handlebar post 13 that stands up from the boat body 10, and exhibiting a wide-rear V-shape as a whole in plan view. In a jet-propelled small watercraft, in which mounting plates 17 (17) are rotatably supported on the base plate (15) by a vertical shaft (18), a pair of handle grips (26) are attached to both left and right ends of the handlebar (17) in a non-rotatable manner. At the same time, the grip 26 is fitted to the handlebar bar 17 in an upright position along a plane orthogonal to the installation plane A control handle device for a jet propulsion type small boat, characterized in that it is configured to forcibly raise and lower the boat by a certain angle γ in the longitudinal direction around the longitudinal axis of the boat. 2. By fitting each of the handle grips 26 to the handle bar 17 in a freely replaceable manner, the grips 26 can be attached to the installation plane X-X of the bar 17.
A control handle device for a jet propulsion type small watercraft according to claim 1, characterized in that the initial elevation angle θ of the jet propulsion type watercraft is set so as to be adjustable. 3 When looking at each handle grip 26 from the front and back direction of the boat body 10, the L that intersects with the handle bar 17
A control handle device for a jet propulsion type small watercraft according to claim 1, characterized in that it is formed into a letter shape or a sideways T-shape.