EP2917099B1 - Hull with opening in the floor for a boat drive - Google Patents

Description

The invention relates to a boat with a boat hull and with a boat drive according to the preamble of claim 1 and a method for manufacturing a boat according to claim 7.

Known inboard boat drives have a submerged control and propulsion unit, which is pivotable about a vertical axis. The propulsion is generated by one or two propellers whose axis of rotation is pivotable by means of a control unit. Due to the pivoting of the axis of rotation of the propeller, a control effect for the boat is achieved. The boat drive has, for example, a vertically arranged column, which receives the drive shaft for the propeller and is guided through a hull opening in the boat hull. The drive shaft can be driven by a drive motor arranged inside the boat hull. Such boat drives are also called pod drives.

In the area of the hull opening of such boat drives results in an annular gap extending around the column. This annular gap is sealed by a sealing device so that no water gets into the interior of the boat hull through the annular gap. For example, the shows DE 2748276 A1 a boat hull of a boat with a boat drive, which is passed through a hull opening in the bottom of the boat hull. In this case, the mentioned annular gap is sealed by an O-ring seal and the boat drive is attached via flexible mounting members and a motor bed arranged inside the bottom of the boat hull in the hull.

In the manufacture and assembly of the boat hull, the boat drive and the sealing device inevitably deviations and inaccuracies arise. These dimensional deviations and inaccuracies lead in the region of the sealing device to leaks or increased material stress and consequently to a shortening of the service life of the components. In addition, inaccurate transitions and gaps may arise on the outside of the boat hull, which lead to unfavorable flow behavior of the boat.

Furthermore, from the US 2005/0272321 A1 a boat with a boat hull and with a boat drive known, wherein the boat drive extends through a hull opening therethrough. The boat drive is fastened to a support frame in the hull opening by means of a screw connection. The support frame in the hull opening serves as a positioning element for the boat drive and its attachment means. In this case, two elastic rings are provided as parts for fixing the boat drive. The propeller thrust is transmitted to the boat hull via the elastic rings. The elastic rings also have the function of damping vibrations of the boat drive relative to the boat hull.

The problem underlying the invention is achieved by a boat with the features of claim 1. In addition, a method for producing a boat hull is claimed. Preferred embodiments are claimed in the respective dependent claims.

Accordingly, a boat with a boat hull and a boat drive, which is passed through a hull opening in the bottom of the boat hull, claimed, wherein the boat drive is connected by means of at least one fastening means to the boat hull. In this case, at least one positioning element is provided on the outside of the boat hull for positioning the fastening means with respect to the boat hull.

The arrangement of the positioning element on the outside of the boat hull has the advantage that all other elements of the boat, which are aligned with the positioning element have a direct relation to the outer shell of the boat hull. This reduces the manufacturing and assembly tolerances and the deviations and the individual components can be positioned exactly and reproducibly from the outside. This in turn means that all so aligned and fixed to the boat hull parts fit together exactly. As a result, for example, a sealing device in the initially mentioned annular gap between boat drive and boat hull can be accurately positioned and a reliable sealing effect can be achieved, with flexible sealing elements of a reproducible and exposed to predictable material stress. Thereby, the sealing effect and the life of such sealing devices can be increased. Likewise, if necessary, spare parts can also be easily and accurately positioned again at a later date. Parts arranged on the outside of the hull, such as a cover for covering and protecting the sealing device from mechanical damage, can be precisely positioned with the aid of the invention, thereby avoiding gaps and / or transitions between the cover and the boat hull, and a streamlined outer surface of the hull Boat hull is reached.

The positioning element on the outside of the boat hull facilitates the assembly of the boat hull, the boat drive and the sealing device and thus shortens the necessary working time during assembly.

The mentioned fastening means may be, for example, pins, bolts, holes, bores, tapped holes or threaded bolts. In a simple embodiment, the fastening means consist of tapped holes in the hull, for example in longitudinal or transverse girders of the hull, and the boat drive is secured by means of screws in the threaded holes of the boat hull. Flexible elements and damping elements between the boat drive and the boat hull, as known from the prior art, may also be part of the fastening means or additionally provided.

The positioning element may be formed positively. The positioning member includes at least one indentation, and the indentation or parts thereof are configured to be suitable for positioning the fastener with respect to the boat hull.

Furthermore, the positioning element comprises a contact surface, which is bounded by a reference border. The reference border is suitable as a stop for positioning the fastener. The contact surface may be part of the indentation mentioned, wherein the reference border limits the indentation. The reference border may take the form of a bead, a heel, a step, a shoulder or an inclined surface etc. Preferably, the reference border limits the contact surface in the plane of the contact surface in all directions, so that during assembly, the correct positioning of the components to be arranged on the fuselage is ensured.

According to a further preferred embodiment, the boat hull has a fastening frame for the boat drive, on which the fastening means is arranged. Such a mounting frame may consist wholly or partly of side rails, also called stringer, or other support structures of the boat hull, which are provided anyway, for example, to stabilize the boat hull. In this case, the mounting frame is preferably made in one piece with the boat hull. One-piece designs of boat hull and mounting frame can be achieved, for example, by the mounting frame being laminated to surface parts of the hull or being cast in one piece with the boat hull.

In the event that the mounting frame is first manufactured separately and then combined with the boat hull, the mounting frame is preferably also aligned by means of the positioning element on the outside of the hull against the hull. For this purpose, starting from the positioning element on the outside of the boat hull, a reference surface is created on the inside of the boat hull. The mounting frame is then applied to the reference surface in the boat interior, before it is attached to the boat hull or combined with the boat hull. The arranged on the inside of the boat hull reference surface for the mounting frame is preferably parallel to the above-mentioned contact surface on the outside of the boat hull.

In other words, first a first surface on the outside of the boat hull is defined as a positioning element and, starting therefrom, a second surface on the inside of the boat hull is defined and generated. On the second surface of the boat drive is then fixed exactly in an optimal position relative to the boat hull on this.

Furthermore, the present invention comprises a boat with a boat hull described above and with a sealing device for sealing the boat interior against incoming water in the region of the hull opening. The sealing device is positioned by the positioning member with respect to the boat hull. As a result, for example, a sealing device in the initially mentioned annular gap between boat drive and boat hull can be accurately positioned and achieve a reliable sealing effect, wherein flexible sealing elements of a reproducible and predictable material stress are exposed. Thereby, the sealing effect and the life of the sealing device can be increased.

A boat according to the invention comprises a cover that covers the described bulge of the boat hull to the outside. The lid is positioned by the positioning member with respect to the boat hull. Also on the boat hull outside arranged parts, such as a lid for covering and protecting the said sealing device can be accurately positioned by means of the invention, whereby flow unfavorable gaps and / or transitions are avoided by the edges of the lid to the hull and a streamlined outer surface of the Boat hull is reached. Preferably, such a cover covers the entire indentation mentioned above by abutting with its edges on the reference border and thus results in a closed continuous outer surface of the boat hull.

Finally, the present invention comprises a method for installing a boat drive in a boat hull, in particular for the production of a boat described above.

1. a) Das Bereitstellen eines Bootsrumpfes mit einer Rumpföffnung für einen Bootsantrieb und mit zumindest einem Positionierungselement auf der Außenseite des Bootsrumpfes,
2. b) Das Bereitstellen einer Dichtungseinrichtung,
3. c) Das Festlegen der Einbauposition der Dichtungseinrichtung in Bezug auf den Bootsrumpf mit Hilfe des Positionierungselementes,
4. d) Das Befestigen der Dichtungsvorrichtung an dem Bootsrumpf,
5. e) Das Bereitstellen eines Befestigungsmittels für den Bootsantrieb,
6. f) Das Festlegen der Einbauposition des Befestigungsmittels in Bezug auf den Bootsrumpf mit Hilfe des Positionierungselementes,
7. g) Das Befestigen des Befestigungsmittels an dem Bootsrumpf,
8. h) Das Einfügen des Bootsantriebes durch die Rumpföffnung und
9. i) Das Befestigen des Bootsantriebes an dem Bootsrumpf durch das Befestigungsmittel.

The method for producing a boat with a boat drive comprises the following method steps:

1. a) providing a boat hull having a hull opening for a boat drive and having at least one positioning element on the outside of the hull;
2. b) providing a sealing device,
3. c) determining the installation position of the sealing device with respect to the boat hull with the aid of the positioning element,
4. d) attaching the sealing device to the boat hull,
5. e) providing a fastening means for the boat drive,
6. f) determining the installation position of the fastener with respect to the hull by means of the positioning element,
7. g) attaching the fastener to the boat hull,
8. h) The insertion of the boat drive through the hull opening and
9. i) Attaching the boat drive to the boat hull through the attachment means.

Method step f), in addition to fixing the position and securing the fastener to the boat hull, may include simultaneously determining the position of a mounting frame relative to the boat hull when the fastener is placed on a mounting frame that is rigidly or integrally connected to the boat hull. This can be done by using a reference surface on the inside of the boat hull where the mounting frame is placed and positioned before it is attached to the boat hull. The reference surface is created during manufacture of the boat hull with respect to the positioning member located on the outside of the boat hull. The reference surface inside the boat hull is preferably arranged parallel to the arranged as a positioning element on the outside of the boat hull bearing surface.

But it is also possible that the fastening means is positioned and mounted directly on the boat hull, the hull may already have support structures such as side members and / or cross member.

Furthermore, to carry out the method steps c) and / or f), a template may preferably be used in order to further facilitate the exact positioning and thus to further shorten the required working time for assembling the parts.

According to the invention, the positioning element comprises a recess which is covered in the subsequent method steps in order to give the boat a streamlined outer contour. There is provided a lid for closing the indentation on the outside of the boat hull. Subsequently, the installation position of the lid is determined by means of the positioning element and then the lid is attached to the boat hull. With the help of the positioning element on the outside of the hull, the correct installation position of the lid can be set easily and reproducibly later in the context of maintenance.

Fig. 1

einen Ausschnitt aus einem erfindungsgemäßen Bootsrumpf mit einem Bootsantrieb in einer Schnittdarstellung und

Fig. 2

einen Ausschnitt aus dem Bereich der Rumpföffnung mit einer anderen Anordnung der Dichtungseinrichtung und des Deckels gegenüber Fig. 1.

The invention will be described in more detail with reference to the embodiment described below and shown in the figures. Show it

Fig. 1

a section of a boat hull according to the invention with a boat drive in a sectional view and

Fig. 2

a section of the region of the hull opening with another arrangement of the sealing device and the lid opposite Fig. 1 ,

In the FIGS. 1 and 2 are the same elements with the same reference numeral.

The hull 1 according to the invention has a hull opening 3 in its bottom area. Through this hull opening 3, a boat drive 2 is passed. The boat drive 2 is designed as a so-called POD drive. The boat drive 2 essentially comprises a drive motor, not shown, and an upper drive part 20, which are both arranged in the boat interior 13, and a lower drive part 21 with a nacelle 22, which are both arranged outside the hull 1. The upper drive part 20 is fastened in the boat hull 1 by fastening means 4. In the region of the hull opening 3, the upper drive part 20 is pivotally connected to the lower drive part 21. Outside the boat hull 2, the nacelle 22 is arranged at the lower end of the lower drive part 21. The lower drive part 21 is pivotable together with the nacelle 22 by a control unit, not shown, about a substantially vertically extending pivot axis 23. The nacelle 22 comprises at its rear end in the direction of travel 17 two propellers 25 and 26, which can be rotatably driven about a substantially horizontal, ie parallel to the water surface, arranged rotational axis 24.

Due to the pivotability of the gondola 22 with the propellers 25 and 26, a control effect for the boat is achieved. Through the interior of the upper and lower drive member 20 and 21, a non-subscribed drive line for the propeller 25 and 26. The drive train consists essentially of driven by the drive motor drive shafts and bevel gears for deflecting the rotational movements of a lying in the direction of travel 17 propeller shaft on which the Propellers 25 and 26 are attached.

The boat drive 2 is connected to the boat hull 1 by means of a plurality of fastening means 4. In this embodiment, the fastening means 4 are designed as threaded bolts 18 with hex nuts 19. Advantageously, the fastening means 4 comprise additional securing elements for the screw connection between hexagon nut 19 and threaded bolt 18, for example securing rings or locknuts. The fastening means 4 in this embodiment also comprise damping means 11 of flexible material, e.g. Rubber, with the help of the boat drive 2 is vibration-damped connected to the boat hull 1. In this way, vibrations and shocks that are caused for example by the drive motor, not undamped transferred from the boat drive 2 to the boat hull 1, whereby unwanted noise and vibration are avoided by the boat hull 1 or at least significantly reduced.

The hull 1 has on its outer side 6 a positioning element 5 for positioning the fastening means 4 with respect to the hull 1. The positioning element 5 is formed as a recess 7. The indentation 7 extends in the region of the hull opening 3 around the entire circumference of the hull opening 3 and, for example, according to the hull opening 3 is annular. The transition from the flat surface of the outer side 6 of the boat hull 1 to the indentation 7 in this case forms a step to form a perpendicular to the outer side 6 arranged reference border 10th

In the indentation 7, a sealing device 12 is at least partially arranged. The purpose of the sealing device 12 is to seal the annular gap which results between the hull opening 3 and the boat drive 2 guided therethrough. The sealing device 12 is intended to prevent water from entering the boat interior 13 from the outside of the hull 1. Various such sealing devices have already been described, for example in the documents DE 102009000994 A1 and DE 102012210727 A1 ,

The positioning element 5 in the form of the indentation 7 can be used both for positioning the fastening means 4 and for positioning a sealing device 12 arranged in the region of the hull opening 3 and a cover 14.

The positioning element 5 in the form of the recess 7 is formed in the embodiments shown by a contact surface 9 and a reference border 10. For exact positioning of the fastening means 4, the seal assembly 12 and the cover 14, the elements are applied either to the abutment surface 9 or to the reference border 10 or both, before they are attached to the hull 1.

The execution after Fig. 1 provides that the sealing device 12 bears against the abutment surface 9 and against an inner edge of the hull opening 3 and is thereby fixed in its position relative to the hull 1. The lid 14 rests in this embodiment both on the contact surface 9, as well as on the reference border 10 and is positioned relative to the boat hull 1.

The execution according to the Fig. 2 provides that the sealing device 12 abuts against the contact surface 9 and the reference border 10 and thereby in their Location opposite the hull 1 is set. The cover 14 rests in this embodiment on the sealing device 12 and is completely sunk in the recess 7, so that there is a smooth, streamlined transition from the outside 6 of the boat hull 1 to the outer surface of the lid 14.

In particular, for positioning the fastening means 4 in the boat interior 13, a template can be advantageously used, which is also applied to the contact surface 9 and / or on the reference border 10 before the fastening means 4 are attached to the boat hull 1 or attached.

The lower drive part 21 has at its upper end a projection 29 which defines the hull opening 3 and the components arranged therein, e.g. covers the lid 14 and the sealing device 12 and thus protects against mechanical damage. Between the projection 29 and the outer side 6 of the hull 1 and the cover 14, a gap 28 necessarily results, since the projection together with the lower drive part 21 relative to the hull 1 is pivotable. The gap 28 is advantageously as narrow as possible, because the boat is thus streamlined in this area and the risk that in the water floating elements get into the gap and damage components of the boat is less. The inventive construction of the boat hull 1 with the reference element 5 in the form of indentation 7 on the outside 6 of the boat hull 1 allows the production of the boat with a very narrow gap 28, because the gap forming components boat drive 2 and cover 14 directly and positively on the Reference element 5 created and can be fixed exactly in their intended position on the boat hull 1. Tolerance deviations in the production of the items and during assembly of the boat are minimized.

The achievable by the small tolerances narrow gap and the precise positioning of the boat drive 2 in the boat hull 1 allow a streamlined hydrodynamics and increased propeller performance when moving the boat in the water.

With the help of retaining arms 27, a housing of the boat drive 2 is attached to the inside of the boat hull 1 or to the mounting frame 8. The retaining arms 27 can be made by material selection and shaping so as to dampen vibrations and vibrations between the boat drive 2 and the boat hull 1, in addition to or as an alternative to the damping means 11. The holding arms 27 can be made in one piece with the housing of the boat drive 2 or in one piece with the housing of the upper drive part 20.

reference numeral

1

hull

2

boot drive

3

fuselage opening

4

fastener

5

positioner

6

outside

7

indentation

8th

mounting frame

9

contact surface

10

reference border

11

damping means

12

seal means

13

Boat interior

14

cover

15

reference surface

16

threaded hole

17

direction of travel

18

threaded bolt

19

Hex nut

20

Upper drive part

21

lower drive part

22

gondola

23

swivel axis

24

axis of rotation

25

propeller

26

propeller

27

holding arm

28

gap

29

head Start

Claims (8)

1. Boat having a hull (1) and having a boat drive (2) which is led through a hull opening (3) in the bottom of the hull (1), the boat drive (2) being connected to the hull (1) by means of at least one fastening means (4), at least one positioning element (5) for positioning the fastening means (4) in relation to the hull (1) being provided on the outside (6) of the hull, the positioning element (5) comprising at least one indentation (7), and the indentation (7) or parts of the indentation (7) being shaped in such a way that it is suitable for positioning the fastening means (4) in relation to the hull (1), the positioning element (5) comprising a contact surface (9), and the contact surface (9) being delimited by a reference border (10), which is suitable as a stop for positioning the fastening means (4), characterized in that the indentation (7) is covered towards the outside by a cover (14), in that the cover (14) is positioned in relation to the hull (1) by the positioning element (5), and in that the cover (14) rests both on the contact surface (9) and on the reference border (10) and is thus positioned with respect to the hull (1).
2. Boat according to Claim 1, characterized in that the reference border (10) delimits the contact surface (9) on all sides in the plane of the contact surface.
3. Boat according to one of the preceding claims, characterized in that the hull has a fastening frame (8) for the boat drive (2), and in that the fastening means (4) is arranged on the fastening frame (8).
4. Boat according to Claim 3, characterized in that the fastening frame (8) is formed in one piece with the hull (1).
5. Boat according to Claim 3, characterized in that the hull has a reference surface (15) on its inner side for positioning the fastening frame (8).
6. Boat according to one of the preceding claims, characterized in that the fastening means (4) comprises at least one threaded hole (16) and/or at least one threaded bolt.
7. Method for producing a boat having a boat drive, characterized by the following method steps,

   a) providing a hull (1) having a hull opening (3) for a boat drive (2) and having at least one positioning element (5), which comprises at least one indentation (7), on the outside of the hull (1),

   b) providing a sealing device (12),

   c) defining the installation position of the sealing device (12) in relation to the hull (1) with the aid of the positioning element (5),

   d) fastening the sealing device (12) to the hull (1),

   e) providing a fastening means (4) for the boat drive (2),

   f) defining the installation position of the fastening means (4) in relation to the hull (1) with the aid of the positioning element (5),

   g) fastening the fastening means (4) to the hull (1),

   h) inserting the boat drive (2) through the hull opening (3), and

   i) fastening the boat drive (2) to the hull (1) by the fastening means (4),

   j) providing a cover (14) for closing off the indentation (7) on the outside (6) of the hull (1),

   k) defining the installation position of the cover (14) with the aid of the positioning element (5), and

   l) fastening the cover (14) to the hull (1).
8. Method according to Claim 7, characterized in that a template is used for carrying out method steps c) and/or f).

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