JPS6311200B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a small sailboat with excellent portability.

Conventionally, it was considered essential for ships with spinnakers to have stays on their masts, and they were always provided with stays. For this reason, the stay was a hindrance when deploying and operating the spinnaker. Also, articulated masts are used to increase the portability of sailboats, but in this case, it is necessary to avoid bending stress concentrated at the mast joint due to the tensile force of the stay. For this reason, a spretsuda is installed near the joint.
As a result, operability deteriorates, additional stays and spreaders are required as parts, and portability is not improved much.

The present invention has been made to solve these conventional drawbacks, and provides a mast that allows the spinnaker to be easily expanded and operated and is highly portable. That is, in the present invention, the lower mast is erected so that the lower end is held at the bottom of the hull, and the outer periphery is held at a position above this by a member whose ends are fixed on both ship sides. An extension mast is fitted to the upper end so that the extension mast is erected and held only by the lower mast, and a block with a rope passed through the extension mast or the leading edge of the corresponding sail. A support part that supports the upper end of the spinnaker is formed through the spinnaker, and a spin pole held by a rope is interposed between the lower mast and the lower part of the spinnaker, and the lower part of the spinnaker is stretched by the rope.

Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, 1 is a board body, 2 is a mast, 3 is a sail, 4 is a spinnaker, 18 is a center boat, and 19 is a rudder. Above mast 2
It is constituted by a so-called connected mast consisting of a lower mast 21, an extension mast 22 connected to its upper end by a connecting portion 5, and an extension mast 23 further connected to its upper end.

The lower mast 21, as shown in FIGS. 3 and 4,
The lower end is supported by a mast step 6, and the outer periphery is held above by a deck 11. The deck 11 is connected to the hull 1 at its peripheral edge, and the mast holding part 14 is bent downward to form a flange, thereby reinforcing the holding part 14 and increasing the contact area with the lower mast 21. This relieves large concentrated stress from being applied to the lower mast 21. 17 is a floating body attached to the deck 11.

A boom 31 and a spin pole attachment part are formed above the lower mast 21, and a spin pole 41 is attached to this. The mast step 6 has a protrusion formed on the bottom of the ship, and a recess 23' in the center thereof into which the lower mast 21 is fitted, and a rod-like member 24 is attached to cross the recess 23'. Further, a notch 22' is formed at the lower end of the lower mast 21, and positioning in the circumferential direction is achieved by fitting the lower end of the lower mast 21 into the recess 23' and fitting the rod-shaped member 24 into the notch 22'. I try to do that.

FIG. 5 shows the structure of the mast connecting part 5, in which the upper end of the lower mast 21 is formed thin and has a protrusion 52 on the side, while the lower end of the extension mast 22 has a notch 5.
3, and by fitting the narrow diameter portion 51 into the extension mast 22 and fitting the protrusion 52 into the notch 53, positioning in the circumferential direction is performed. This embodiment is a three-stage connecting mast, and the connecting portions are the same at both the upper and lower locations.

As shown in FIG. 6, a plurality of annular members 34 are attached to the leading edge of the sail 3 at appropriate intervals.
The mast 2 is inserted into this annular member 34, and the rope 30 attached to the upper end of the sail 3 is attached to the mast 2.
The sail 3 is moved up and down the mast 2 by pulling downward through the upper end of the sail. Further, a block 43 through which a rope 42 for the spinnaker 4 is passed through and a rope 44 for the spin pole are attached to the annular member 34 located on the extension mast.
This tensions the spinnaker 4. That is, the annular member 34 serves as an attachment member for the sail 3 as well as an attachment member for the spinnaker 4. When this annular member is made of nylon woven fabric, it has low abrasion resistance with the mast 2, is convenient for raising and lowering the mast 2, can be easily sewn to the sail 3, and can be stored compactly.

As shown in FIG. 7, the upper end of the mast 2 is formed with a groove 20 in the longitudinal direction of the sail boat, and a through hole is formed downward at the front and rear ends of the mast 2, and a sail rope 30 is inserted along the hole and groove. is being passed.

The hull 1 has a wide upper part at the bow and is formed in a so-called square shape, but as shown in FIG. 8, the waterline surface 13 is formed in a tapered shape. In this way, by making the water contact area streamlined and the upper part of the hull squared, the propulsion resistance of the hull is small during normal sailing, and moreover, it is easier for people to move to the bow to operate the spin pole. 4 trims forward significantly in response to the wind, the displacement volume at the bow increases, giving the ship greater stability, making it easier to carry out work, and preventing capsizing.

9 and 10 show other embodiments of this invention,
The deck member is formed by integrally forming a front deck 11, a cockpit 7, and a cylindrical recess 11a, and a lower mast 21 is fitted and held in the cylindrical recess 11a. The lower end of the cylindrical recess 11a is supported by a support portion 61 formed inside the bottom of the ship,
The support portion 61 is constructed by filling an adhesive such as paste into a conical outer skin made of fiber reinforced plastic.

Conventionally, the mast was installed forward as shown by the imaginary line in Figure 9 compared to the one in this embodiment, and the cockpit was formed at the rear, away from the mast, as shown by 71 or 72, so it was difficult to see from inside the cockpit. It was not possible to attach or detach the spin pole from the mast. On the other hand, as shown in this embodiment, moving the installation position of the mast to the rear and forming a cockpit close to the mast (within 50 cm, for example) has the advantage that the mast can be operated from inside the cockpit. be.

If the lower mast is firmly held by the bottom of the hull and the deck above it as described above, the extension mast can be connected to the upper part of the mast to form a connected mast without using a stay. In addition, the structure without a stay allows the spinnaker to be deployed and operated easily, and the number of parts is reduced because the stay and the parts necessary for its connection are not required, further increasing the portability of the articulated mast. Can be done.

As explained above, in this invention, the lower end of the lower mast is held only by the bottom of the ship and the deck above it, omitting the stay, and the extension mast is connected to the lower mast and the upper end of the spin pole is attached thereto. Since the spinnaker does not use a stay, it is easy to deploy and operate the spinnaker, and since the stay and its attached parts can be omitted, the spinnaker has excellent portability.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway overall side view of a ship showing an embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is an enlarged vertical sectional view of the bow section, and Fig. 4 is an enlarged perspective view of the lower part of the mast. , Fig. 5 is an enlarged perspective view of the mast connection part, Fig. 6 is a side view of the spinnaker attachment part, Fig. 7 is an enlarged perspective view of the mast top, Fig. 8 is an explanatory diagram of the waterline shape, Fig. 9 1 is a plan view showing another embodiment of the present invention, and FIG. 10 is a sectional view thereof taken along the line -2. 1...Hull, 2...Mast, 3...Sail, 4
... spinnaker, 5 ... connection part, 6 ... mast step, 11 ... deck, 11a ... cylindrical recess, 14 ... mast holding part, 21 ... lower mast, 22, 23 ... extension mast.

Claims (1)

[Claims] 1 A lower mast is erected so that the lower end is held at the bottom of the hull and the outer circumference is held by a member whose ends are fixed on both sides of the ship at a position above this, and an extension is attached to the upper end of this lower mast. The extension mast is erected and held only by the lower mast, and the upper end of the spinnaker is connected to the upper end of the spinnaker through a block through which a rope is passed through the extension mast or the leading edge of the corresponding sail. What is claimed is: 1. A small sailboat characterized by forming a support part for supporting a spinnaker, interposing a spin pole held by a rope between a lower mast and a lower part of a spinnaker, and having the lower part of the spinnaker stretched by a rope.