BOAT WITH STERN HATCH WITH INTEGRATED MOVEMENT

Abstract

A boat includes a hull provided with a rear stern hatch located in correspondence with an internal stern compartment of the hull and suitable for opening and closing in correspondence with an aperture of the compartment, the hatch having a body with opposed side located in correspondence with side walls of the compartment and a upper edge and a lower edge. The hatch includes an actuator to open and close the compartment arranged inside its own body. The actuator rotatably constraining at least one of the sides of the hatch to the hull. The body being not provided with any further connections of the sides to the hull.

Claims

1. A boat comprising a hull provided with a rear stern hatch located in correspondence with an internal stern compartment of said hull and suitable for opening and closing in correspondence with an aperture of said compartment, actuating means being provided for opening and closing said hatch onto said aperture, said hatch having a body with opposed sides located in correspondence with side walls of said compartment and a upper edge and a lower edge, the body of the hatch comprising a cavity, wherein all the actuating means used to open and close said hatch are completely and totally located into said cavity of the hatch, said compartment being completely free from said actuating means, said actuating means rotatably constraining at least one of said sides of the hatch to said hull, no other connection of said sides to said hull being provided.

2. A boat according to claim 1, wherein said actuating means comprise a first gearing or gear wheel on which a second gearing or gear wheel, moves, the first gearing being fixed with respect to the hull and functionally integral therewith, the second gear wheel being integral with the hatch.

3. A boat according to claim 2, wherein the second gearing is subjected to an actuating member also located in the hatch.

4. A boat according to claim 3, wherein the second gearing is constrained to a body eccentrically connected to said actuating member.

5. A boat according to claim 4, wherein said actuating member is located in the cavity of the hatch.

6. A boat according to claim 5, wherein said actuating member is a telescopic actuating member and comprises a sleeve fixed to the body of the hatch with respect to which a stem moves having a head eccentrically connected to the body integral with the second gearing.

7. A boat according to claim 6, wherein said head of the stem supports a pin eccentrically connected to the body integral with the second gearing.

8. A boat according to claim 6, wherein said telescopic actuating member is alternatively of a hydraulic, pneumatic, hydropneumatic or electric type.

9. A boat according to claim 8, wherein said telescopic actuating member, when alternatively of the hydraulic, pneumatic or hydropneumatic type, is powered by a control unit installed outside the hatch, and from which control unit the ducts of the pressurized fluid originate and reach said telescopic actuating member via the first gearing.

10. A boat according to claim 2, wherein the second gearing is put, rotating, on a shaft projecting from and integral with a support put on a shaft fixedly supporting the first gearing, said support being rotating around said shaft of the first gearing and being integral with the adjacent side of the hatch.

11. A boat according to claim 10, wherein said shaft of the first gearing is fixed to the hull via a supporting member.

12. A boat according to claim 10, wherein said shaft of the first gearing presents an extremal flange constrained to a support integral with the hull, said support being alternatively integral with a stern part of the hull or to a stern platform thereof.

13. A boat according to claim 10, wherein the support from which projects the shaft on which rotates the second gearing, is inserted in a shape coupling arrangement in a hollow provided in said side of the hatch.

14. A boat according to claim 1, wherein said actuating means are pre-assembled in the hatch before the hatch is constrained to the hull.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0018] For a better understanding of the present invention the following drawings are attached for purely explanatory, not exhaustive, purposes, of which:

[0019] FIG. 1 shows the stern of a boat according to the invention, its stern hatch being closed;

[0020] FIG. 2 shows the stern of the boat depicted in FIG. 1, its hatch being open downwards;

[0021] FIG. 3 shows the stern of the boat depicted in FIG. 1, the hatch being further opened downwards;

[0022] FIG. 4 shows the stern of the boat, the hatch being in the closed position and partially cross-sectioned showing the hatch opening and closing actuating means;

[0023] FIG. 5 shows an enlarged, transparent view of the hatch highlighting the detail identified by A in FIG. 4;

[0024] FIG. 6 shows a cross-sectional view according to the line 6-6 of FIG. 5;

[0025] FIG. 7 shows a side view of the hatch actuating means;

[0026] FIG. 8 shows an enlarged, transparent perspective view of the hatch in its open configuration according to FIG. 2; and

[0027] FIG. 9 shows a cross-sectional view according to the line 9-9 of FIG. 2.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] With reference to the mentioned figures, a boat 1 is (partially, in its stern portion only) shown as comprising a hull 2 having a stern hatch 3 suitable for enclosing a stern compartment 4, for instance suitable for housing a small boat like a dinghy or a tender (not shown in the figures). Such compartment 4 comprises an aperture 5, opposed side walls 6, an upper part 7, and a lower part 8.

[0029] The stern hatch 3 comprises an outer wall 10, an inner wall 11 (generally made of fiberglass, for instance like the hull 2) spaced from each other by sides 12 and 13, upper and lower edges 14 and 15; such walls 10 and 11, said sides 12 and 13, and the upper and lower edges 14 and 15 determine a body 20 of the hatch.

[0030] In the embodiment depicted in the figures, the hatch 3 is capable of opening toward a stern platform 21 of the hull 2, i.e. it is capable of opening downwards with respect to the compartment 4. Should such platform 21 feature a central portion 21A lowered toward the water (on which the boat floats) with respect to the side portions 21B and 21C, the hatch 3 might reach, when open, a position in which its inner wall 11 is coplanar with the lower wall 8 of the compartment 4, as shown in FIG. 3. Obviously, the same coplanarity can be obtained, the wall 8 being realized in such a way as to fit in with the wall 11, even in the case of a hatch according to FIG. 1.

[0031] The outer wall 10 of the hatch is suitable for arranging itself in correspondence with a stern wall 26 of the boat 1 when the hatch is closed, said wall 26 delimiting the aperture 5 of the compartment 4.

[0032] According to the invention, the stern hatch 3 is associated with actuating means 30 completely and totally located inside its body 20 only, in a cavity 31 present between the inner wall 11 and the outer one 10; such actuating means 30 make it possible the movement of the hatch with respect to the aperture 5 of the compartment 4 during the opening and closing operations and at the same time constrain said hatch to the latter, so as not to limit the amplitude of said compartment. In this way, the hatch is not provided with any hinge members or further connections to the hull 2. It follows that mainly the side walls 6, but also the walls 7 and 8 of the compartment 4 do not support any hatch actuating member and the hatch is perfectly smooth on all of its side. All of this to the advantage of safety for the people on board the boat 1, who can freely move inside the compartment 4 without any risks of hitting against parts projecting from its walls and also to the advantage of an ease operation in loading means or goods inside such compartment.

[0033] For this purpose, in correspondence with at least one side 12, 13 and preferably both of them, should the dimensions and the weight of the hatch be non negligible, within the cavity 31 there is a pair of gearings 40 and 41 whose toothed surfaces 40A and 41A are suitable for cooperating with each other so as to allow a relative movement between said gearings. More specifically, the gearing or gear wheel 40 is fixed to a beveled shaft 43 which is constrained, via an extremal flange 44 arranged in correspondence with a hole 45 present in said side 12, 13, to a support constrained to the craft 2. In particular, such support is a panel 47 which can be connected to the stern wall 26 or its corresponding side wall 6 of the compartment 4; alternatively it can be fixed to the stern platform 21. The shaft 43 is connected to the hatch 3 via other constraint elements, like flanges 430.

[0034] The gear wheel 40 is fixed whereas the gear wheel or gearing 41 can move along its toothed surface. Such a movement is generated by a pneumatically, hydraulically, or hydropneumatically movable telescopic member 50 comprising a stem 51 movable in a sleeve 52; the sleeve 52 is fixed, via a support or bracket 59 to a wall, for instance the outer one 10 (from the inside of the cavity 31), of the hatch, whereas the stem 51 features a head 53 supporting a pin 54 (via an eyelet 55) eccentrically fixed to a body or connecting rod 56 integral with the gearing or gear wheel 41. Activating the telescopic member results in lowering or lifting the hatch.

[0035] Such telescopic member 50 is controlled by a control unit (not shown in the figures) outside the hatch, indicatively installed in the engine room and which the oil (or air) ducts originate from to subsequently reach the sleeve 52, for instance via the shaft 43 of the first gearing 40.

[0036] Such member can be electrically operated indeed.

[0037] More specifically, starting from the position depicted in FIGS. 1 and 7, if the stem 51 is retracted into the sleeve 52, then the connecting rod 56 rotates (clockwise in FIG. 7, see arrow F) the gearing 41 onto the gearing 40, which results in lowering the hatch down. Vice versa, taking the stem 51 out of the sleeve 52 results in a rotation of the gearing 41 onto the gearing 40 that is reversed (with respect to the previous one, i.e. counterclockwise), which results in lifting the hatch 3 up to its closing positioning on the aperture 5 of the compartment 4.

[0038] The gearing 41 is rotatable via a bearing or an equivalent member 58 and is put on a shaft 60 projecting from a support 46 and integral therewith. Such support is put on the shaft 43 and can rotate around it thanks to appropriate mechanical decoupling members or bearings.

[0039] In particular, such support 46 is located in a hollow 66 created outside the adjacent side 12, 13 of the hatch 3 and is blocked therein by a shape coupling with the hollow itself. In this way, the movement of the gearing 41 on the gearing 40 forces the shaft 60, hence its support 46 and the complete hatch 3, to rotate around such gearing 40, which subsequently operates as a hinge for the hatch.

[0040] Thanks to the invention, the possibility is achieved of constraining the hatch to the hull of the boat without using any specially conceived hinge members and at the same time a hatch movement mode is offered which is fully encased therein, which leads to the advantages indicated above. Also, the complete actuating mechanisms defined by the actuating means 30 can be pre-assembled in the hatch and constrained to the panel 47 upon its final mounting on the boat 1. This reduces the mounting time as referred to that necessary with the known solutions. Therefore, the hatch according to the invention is not rigidly connected to the boat.

[0041] A specific embodiment of the invention has been described. However, others can be obtained (for instance one that comprises an electric motor, for instance a stepping motor, instead of the telescopic member 50) in the light of the previous description and shall be deemed to fall within the scope of the following claims.