A trim control system

Abstract

A trim control system for a vessel (11), comprising, an electronic controller configured to control at least one trim control device of the trim control system, a distribution unit configured to supply a first electric actuator and the electronic controller with electricity, at least one trim control device, configured to be arranged at a transom of a hull of a vessel, the trim control device comprising the first electric actuators configured to actuate a trim member, wherein the distribution unit comprising a step-up device configured to increase an input voltage from a fixed voltage of the vessel to a higher voltage, and the distribution unit is configured to distribute the input voltage to the electronic controller and the higher voltage to the first electric actuator.

Description

[0001] REBO6995

[0002] A trim control system

[0003] Technical Field

[0004] The technology pertains to the field of marine engineering, specifically focusing on the systems used for controlling the trim of marine vessels.

[0005] Background

[0006] In marine applications, the performance and comfort of a vessel are significantly influenced by the responsiveness of its trim control systems. The rougher the sea, the more the active trim members benefit from a fast reacting trim system. Additionally, sudden shifting weights or maneuvering controls also benefit from a fast reacting trim system. A fast reacting trim system requires the ability to move the active members at a high enough speed to compensate for sudden movements, such as waves, shifting weights, and ma¬ neuvering controls.

[0007] Additionally, the smaller, lighter and faster the boat, the more it will benefit from a fast deployment speed of the active member. Smaller, lighter, faster boats react to fluctuating conditions more quickly and more noticeably, so the quicker the trim system reacts the better.

[0008] Currently, achieving high-speed trim response is addressed through high current solutions, planetary gears, and other mechanical amplification systems. However, these con¬ ventional approaches present significant drawbacks.

[0009] Furthermore, in the maritime industry, the electronic systems onboard leisure vessels such as boats, ships, or other watercraft are typically limited to a maximum voltage, often 12 or 24 volts. This limitation poses a significant challenge for devices that require high output effects, such as those used for trim, pitch, and roll control of the vessel. These devices, which include interceptor systems, trim tabs, stabilising systems, and other vessel posi¬ tion control systems, utilise electronic actuators to move active members that control the vessel’s position.

[0010] The actuators in these devices require high output effects to deliver sufficient torque to overcome the device's friction resistance and move the active members at a high enough REBO6995

[0011] speed to compensate for sudden movements, such as waves, shifting weights, and ma¬ noeuvring controls. As a result, these devices are dependent on high currents. The need for high currents leads to the requirement for large cabling to supply these currents and larger actuators to receive them.

[0012] The increased size of the devices and cabling presents several problems. Firstly, it increases the cost of the end product as more material is needed. Secondly, it adds to the weight of the end product. Thirdly, the devices and cabling become more bulky, taking up more space in the already confined spaces at a transom of a boat.

[0013] Moreover, bulky trim control device arranged at the transom of a boat stick out further from the transom. This creates a longer lever to the boat for the lift force on the device itself, resulting in higher breaking forces on the device and the hull, where it is attached to the transom. To withstand these forces, the devices and potentially the transom need to be reinforced with high-strength materials. This is problematic both from a cost perspective and due to the space at the transom can already be limited, and bulky devices can interfere with fishing gear and lines.

[0014] Summary

[0015] According to a first aspect of the disclosure, a trim control system for a vessel, comprising, an electronic controller configured to control at least one trim control device of the trim control system, a distribution unit configured to supply a first electric actuator and the electronic controller with electricity is suggested. The at least one trim control device is configured to be arranged at a transom of a hull of a vessel, the trim control device com¬ prising the first electric actuator, which is configured to actuate a trim member, and the distribution unit comprising an integrated step-up device configured to increase an input voltage from a fixed voltage of the vessel to a higher voltage, and to distribute the input voltage to the electronic controller and the higher voltage to the first electric actuator. The advantage of the increased input voltage is that it facilitates an increased power and displacement speed of the trim member, without the need for high current and the thereby associated large cabling and large actuators, i.e. without the need of a bulky system. Additionally, by integrating the step-up device in the distribution unit, the electronic controller can still be fed with the low input voltage of vessel, which keeps the electronics of the electronic controller small.

[0016] The step-up device may be integrated in the same housing as the rest of the distribution REBO6995

[0017] unit, to facilitate a compact installation.

[0018] In one exemplary embodiment the trim control device is configured to actuate the trim member via a transmission mechanism, and the transmission mechanism comprising a dual material component, in which a first core material has a high strength, and a second surface material has a low coefficient of friction against an interacting transmission mem¬ ber. The advantage of the combination of increased input voltage through step-up device and the dual material component combination of high strength and low friction is that it facilitates a trim control system that is compact and still can operate with high speeds of the trim member, enhancing the performance and reliability of the trim adjustments, es-pecially at fast changing conditions such as wave sea and shifting weights on board the vessel.

[0019] In an exemplary embodiment of the disclosure, a trim control system for a vessel com¬ prises an electronic controller configured to control trim control device of the trim control system, a distribution unit configured to supply a first electric actuator with electricity, a step-up device configured to increase a voltage from a fixed input voltage of the vessel to a higher voltage and a trim control device configured to be arranged at a transom of a hull of the vessel. The trim control device comprises the first electric actuators configured receive the increased voltage and actuate a trim member via a transmission mechanism, the transmission mechanism comprising a dual material component, in which a first core material has a high strength, and a second surface material has a low coefficient of friction against an interacting transmission member. The advantage of the combination of increased input voltage through step-up device and the dual material component combination of high strength and low friction is that it facilitates a trim control system that is compact and still can operate with high speeds of the trim member, enhancing the perfor-mance and reliability of the trim adjustments, especially at fast changing conditions such as wave sea and shifting weights on board the vessel.

[0020] Optionally in some examples, the second surface material covers at least part of the first core material. This configuration ensures that the high-strength core material is protected and that the low coefficient of friction surface material reduces wear and friction towards the interacting transmission member during operation.

[0021] Optionally in some examples, the second surface material is at least partially chemically bonded, mechanically fastened, co-molded, over-molded, or shrink-fitted onto the first core material. This provides various methods of securing the second surface material to the first core material, ensuring a strong and reliable bond. The various bonding methods can be used alone or in any suitable combination. REBO6995

[0022] Optionally in some examples, the step-up device is configured to increase the voltage from 12 - 24 V up to at least 30 V or 36 V or higher. This in combination with the dual material component allows the trim control system to operate the trim member at higher speeds, which can improve performance of the trim control system, simultaneously as the trim control device and cabling thereto can be kept compact and lightweight.

[0023] Optionally in some examples, the transmission mechanism further comprises a rotatable threaded shaft and a nut. This configuration allows for precise linear movement of the trim member in response to the rotation of the threaded shaft.

[0024] Optionally in some examples, the rotatable threaded shaft is the dual material component and the nut is the interacting transmission member. This creates conditions for steeping the inclination angle of the rotatable threaded shaft, and thereby increasing the transmission ratio of the transmission mechanism, which leads to a higher displacement speed of the trim member.

[0025] Optionally in some examples, the nut is arranged to move linearly when the rotatable threaded shaft rotates. This linear movement allows for precise adjustment of the trim member's position.

[0026] Optionally in some examples, the nut includes a third material. This third material can be selected to further enhance the performance and durability of the nut, such as by reducing friction or increasing wear resistance.

[0027] Optionally in some examples, the third material comprises polyoxymethylene or polyoxymethylene and polytetrafluoroethylene. The advantage of this is that it provides a highly durable and low-friction nut, which enhances the overall performance and longevity of the transmission mechanism.

[0028] Optionally in some examples, the first core material is a glass fibre and polyamide com-posite. This composite material offers high strength and stiffness, making it suitable for the core of the dual material component.

[0029] Optionally in some examples, the second surface material comprises a polyamide material. This combination of materials provides a low coefficient of friction against most interacting materials and good wear resistance.

[0030] Optionally in some examples, the second surface material of the dual material component has a coefficient of friction between 0.05 and 0.1, towards an interacting transmission member. This low coefficient of friction ensures minimal resistance and wear during op¬ eration. REBO6995

[0031] Optionally in some examples, the trim control device comprises a second electric actuator, wherein the first electric actuator(s) and second electric actuator(s) are arranged to actuate the same trim member via separate transmission mechanism. This configuration allows for redundancy and increased control precision.

[0032] According to a second aspect of the disclosure, a vessel is provided with a trim control system as described in any of the preceding claims, wherein the trim control device is arranged at the transom of the hull. This placement ensures optimal positioning for effective trim adjustments.

[0033] Brief Description of the Figures

[0034] Examples are described in more detail below with reference to the appended drawings. Figure 1 is a schematic view of a trim control system installed in a vessel according to some examples;

[0035] Figure 2 is front view of a trim control device with a trim member according to some ex¬ amples;

[0036] Figure 3 is a partial side view of a vessel with a hull and transom, showing the trim control device according to some examples;

[0037] Figure 4 is a schematic view of a trim control device according to some examples;

[0038] Figure 5 is another schematic view of a trim control device according to some examples; Figure 6 is a yet another schematic view of trim control device according to some exam-pies; and

[0039] Figure 7 is a perspective cross-sectional view of an exemplary dual material component for a trim control device.

[0040] Features Description Text

[0041] The detailed description set forth below provides information and examples of the dis- closed technology with sufficient detail to enable those skilled in the art to practice the disclosure. REBO6995

[0042] Figure 1 provides a schematic overview of the trim control system 10 and its integration within the vessel 11. The trim control system 10 is designed to dynamically adjust the trim of the vessel 11, optimizing its performance and handling characteristics of the vessel 11 in various operating conditions. The trim control system 10 comprises an electronic controller 1, a distribution unit 2, and a trim control device 14 which work together to achieve precise and responsive trim adjustments as discussed below

[0043] The electronic controller 1 serves as a processing unit, receiving input from the user and sensors 3, and generating control signals for the first electric actuator 6 and / or the second electric actuator 7. The electronic controller 1 can be an integrated input device for an operator or a separate unit e.g. integrated in the distribution unit 2 or located elsewhere. The step-up device 8 and distribution unit 2 are electrically connected and the step-up device 8 can be integrated in the distribution unit 2. A step-up device 8 integrated in the distribution unit 2 may be configured to provide the electronic controller 1 with a first voltage and the first electric actuator 6 with a second voltage. In one exemplary embodiment the first voltage is lower than the second voltage. The first voltage may be the input voltage provided from the vessel 11 electrical system 22 and the second voltage may be the increased voltage from the step-up device 8.

[0044] The distribution unit 2 together with the step-up device 8 provides electrical power to drive the first electric actuator 6 and, where there is one provided the second electric actuator 7. The trim control device 14 is positioned at the transom 13 of the hull 12 of the vessel 11. The trim control device 14 mounted on the transom 13 is best shown in Figure 3, which is discussed in more detail below. The trim control device 14 may house the first electric actuator 6 and, where there is one the second electric actuator 7 and transmission mechanism 16. In an exemplary embodiment the electric actuators are arranged inside the hull 12. The first electric actuator 6 and / the second electric actuator 7 are operatively coupled to a trim member(s) 15 via the transmission mechanism 16. In some examples, the trim member 15 is an interceptor member. This coordinated action enables the system to effectively control the trim of the vessel 11, enhancing stability, fuel efficiency, and overall performance.

[0045] A trim control system 10 can comprise one or a plurality of trim control devices 14, each provided with ate least one electric actuator 6 / 7, all connected to at least one distribution unit 2.

[0046] The electronic controller 1 is typically located near the helm, providing convenient access for user input and system monitoring. The vessel 11 can be equiped with a plurality of REBO6995

[0047] electronic controllers 1.

[0048] The modular design of the trim control system 10 allows for flexibility in component place¬ ment and integration, accommodating various vessel 11 configurations and operational requirements. For example, the trim control system 10 can be retrofitted to a vessel 11. The trim control system 10 offers advantages over traditional manual trim systems, pro¬ viding automated, precise, and responsive trim adjustments. This results in improved fuel efficiency, reduced drag, enhanced stability, and optimized handling characteristics across a range of speeds and operating conditions. The system's ability to dynamically adapt to changing conditions ensures optimal vessel 11 performance, enhancing both comfort and safety for passengers and crew.

[0049] The trim control system 10 includes an electronic controller 1, a distribution unit 2, and a trim control device 14.

[0050] The electronic controller 1 is a component of the trim control system 10. It sends control signals to the trim control device 14 and controls the electronics of the trim control system 10. In some instances, the electronic controller 1 may be mounted inside the vessel 11, typically near the helm or other user controls 4. The electronic controller 1 may include user controls 4, a processor 5, and sensors 3.

[0051] The electronic controller 1 may incorporate sensors 3. The sensors 3 gather data about the motion and orientation of the vessel 11. They provide feedback to the electronic controller 1, allowing for closed-loop control of the trim control system 10. The sensors 3 measure parameters such as boat speed, acceleration, angle of attack, and vessel 11 position,, which are used by the processor 5 to determine the adjustments to the trim member 15. The sensors 3 may be fully or partially embeded into the electronic controller 1 and / or be distributed and sending sensor signals to electronic controller 1.

[0052] The electronic controller 1 may include user controls 4. The user controls 4 allow the user to input desired trim adjustments. They communicate with the processor 5 to relay user input.

[0053] The electronic controller 1 may include a processor 5. The processor 5 receives data from sensors 3 and generates control signals for the trim control device 14. The processor 5 may be embeded or distributed.

[0054] The trim control device 14 includes a first electric actuator 6. Some embodiments of the trim control device 14 may include a second electric actuator 7.

[0055] The first electric actuator 6 and the second electric actuator 7 actuates the trim member 15 REBO6995

[0056] via the transmission mechanism 16. The first electric actuator 6 and the second electric actuator 7 may have a specification of 6500 rpm in some examples. In other examples, the first electric actuator 6 may have an operational speed of between 4000 rpm to 9000rpm. The first electric actuator 6 and the second electric actuator 7 may comprise a servo motor, stepper motor, brushless DC motor, or solenoid actuator. It may also include a drive shaft and be operatively connected to the transmission mechanism 16.

[0057] The second electric actuator 7 may actuate the trim member 15 via a different transmis¬ sion mechanisms 16. In some examples, the second electric actuator 7 is optional. In this example, only the first electric actuator 6 is used to actuate the trim member 15 via the transmission mechanism 16. In other examples a plurality of electric actuators e.g. the first electric actuator(s) 6(s) 6 and the second electric actuator(s) 7(s) 7 actuate the trim member 15 via a separate transmission mechanisms 16. In other examples there can be any suitable number of electric actuators that actuate the trim member 15 via the transmission mechanisms 16 in a suitable number of trim control devices 14. In yet fur- ther examples, the vessel 11 can have a plurality of trim control device 14, in which and each trim member 15 is actuated by one or more electric actuators via a transmission mechanism 16.

[0058] The distribution unit 2 includes a step-up device 8. The step-up device 8 increases the voltage supplied to the first electric actuator 6 by a factor ranging from at least 1.5, 3 or 4 times the input voltage from the electric system 22 of the vessel 11. This input voltage may range from 12V, 18V, 24V, 36V, or 48V. The step-up device 8 increases the voltage supplied to the distribution unit 2 and thereby to the trim control device 14.. This increases the voltage from the boat's fixed voltage to a higher voltage, reducing the need for high current, allowing smaller cabling and electric actuators and thereby a part solution to keep the trim control system 10 compact. For instance, the voltage may be increased from 12 to 18 V, 12 to 24 V, 18 to 24 Volt, 12 to 36 V, 12 to 48 V, 24 to 36 V, 24 to 48 V, 18 to 36 V, 18 to 48 V, 24 to 60 V, or 12 to 60 V. The step-up device 8 allows the use of more efficient actuators at higher voltages and enhances the actuator speed without increasing actuator size. It may be a DC-DC boost converter, switching voltage regulator, transformer-based voltage doubler, or high-efficiency buck-boost converter. The step-up device 8 can be an integrated part of the distribution unit 2 or be physically separate part and supplying the increased voltage to the distribution unit 2.

[0059] The electric system 22 of the vessel 11 may include a power source 9. The power source 9 provides electrical power to the trim control system 10 and the vessel 11. It may be a battery bank (12V, 24V, 36V, 48V) or an alternator coupled to a combustion engine. The REBO6995

[0060] power source 9 may be electrically connected to the distribution unit 2 via the step-up device 8.

[0061] The trim control system 10 includes a trim control device 14. The trim control device 14 includes a first electric actuator 6, a transmission mechanism 16, and a trim member 15.

[0062] 5 It may also include a second electric actuator 7.

[0063] The trim control system 10 includes a distribution unit 2 and a step-up device 8 The dis¬ tribution unit 2 supplies the first electric actuator 6 and second electric actuator 7 with electricity. It may include or be preceded by a step-up device 8.

[0064] The vessel 11 has a hull 12. The vessel 11 may be any suitable boat, such as a planing boat, a semi-planing boat, a displacement hull 12 boat, a catamaran, a trimaran, a hydrofoil boat, a surface effect ship (SES), a personal watercraft (PWC), a sailboat, a fishing boat, a commercial vessel 11, a passenger ferry, or a cargo ship.

[0065] The vessel 11 has a hull 12. The hull 12 includes a transom 13.

[0066] The hull 12 includes a transom 13. The transom 13 provides a mounting point for the trim 15 control device 14 at the rear of the vessel 11.

[0067] Figure 2 presents a front view of the trim control device 14, illustrating its the movement of the trim member 15. The trim control device 14 is a component of the trim control system 10, responsible for directly adjusting the trim of the vessel 11.

[0068] The trim member 15, depicted in Figure 2, can take various forms, such as a trim tab, 20 interceptor, or other suitable control surfaces. The function of the trim member 15 is to generate hydrodynamic forces that influence the attitude, trim and motion of the vessel 11 in the water. The trim control device 14 actuates the trim member 15 through a transmission mechanism 16, enabling precise control over the trim of the vessel 11.

[0069] The trim member 15 is a component of the trim control device 14. The trim member 25 15 is arranged to be movable relative to the body of the trim control device 14 and the transom 13 when the first electric actuator 6 activates the transmission mechanism 16. This movement adjusts the angle or position of the vessel 11 with respect to the water's surface, due to the lifting force the trim member 15 creates.

[0070] Figure 3 provides a schematic and partial side view of the vessel 11, showing the integra¬ se tion of the trim control system 10 within the hull 12 structure, specifically at the transom 13.

[0071] This view illustrates the physical placement of the trim control system 10 and the relation¬ ship of the trim control system 10 to the overall vessel 11 design. The transom 13 serves REBO6995

[0072] as the mounting point for the trim control device 14, ensuring efficient force transfer and optimal control over the trim of the vessel 11. Figure 3 illustrates the movement of the trim member 15 with respect to the hull 12 and the transom 13 with the vertical arrow.

[0073] As mentioned above, the trim control device 14 includes a transmission mechanism 16. The transmission mechanism 16 may include a screw nut 20 connection which will be discussed in more detail below. However a screw nut 20 connection is an exemplary part of the dual material component 23 of the transmission mechanism 16 between the first electric actuator 6 and / or the second electric actuator 7. Accordingly the transmission mechanism 16 can comprise other or additional or other dual material component 23 to drive the movement of the trim member 15 from the first electric actuator 6 and / or the second electric actuator 7. Alternative dual material component 23 may include a ball screw, a worm gear, a cycloidal drive, a harmonic drive, or a gear connection, sliding parts, camshafts 24 and / or any other suitable mechanism. The gear connection may include a plurality of connecting gears between the first electric actuator 6 and the trim member 15 as shown in Figure 6. The transmission mechanism 16 includes a dual material component 23 which will be discussed in more detail below. Two none-limiting examples of different trim trim control device(s) 14(s) 14, which transmission mechanisms 16 may incorporate one or a plurality of dual material components 23 are disclosed in WO2013068515A1 and W02020071988A1.

[0074] Figure 4 provides a schematic view of the first electric actuator 6 and its integration within the trim control device 14. This figure details the mechanical connection between the actuator and the transmission mechanism 16, highlighting how the rotational motion of the first electric actuator 6 is converted into linear motion in a first direction that is converted to linear motion in a second direction, via cam shafts 24 to adjust the trim member 15. The first electric actuator 6 is arranged to generate the force required to move the trim member 15 via the transmission mechanism 16 and control the trim of the vessel 11. Whilst figure 4 shows only the first electric actuator 6, the arrangement as shown in figure 4 is also applicable to the second electric actuator 7.

[0075] The transmission mechanism 16 may have a dual material component 23. The dual ma-terial component 23 includes a first core material 18 and a second surface material 19. In some instances, the dual material component 23 may also include a rotatable threaded shaft 17.

[0076] A rotatable threaded shaft 17 is operatively connected to the first electric actuator 6. In some instances, the rotatable threaded shaft 17 may comprise a dual material component 23. An exemplary dual material component 23 will be discussed in more detail below. REBO6995

[0077] The operative connection between the rotatable threaded shaft 17 and the first electric ac¬ tuator 6 enables the actuator to control the rotation of the rotatable threaded shaft 17. This rotation can be used to adjust the position of other components or mechanisms connected to the rotatable threaded shaft 17.

[0078] A nut 20 may be a component of the transmission mechanism 16 and may be the inter¬ acting transmission member. The nut 20 is configured to move linearly when the rotatable threaded shaft 17 rotates. This linear movement is parallel to the longitudinal axis of the rotatable threaded shaft 17. The nut 20 is rotatably mounted to the rotatable threaded shaft 17 and connected to the trim member 15. The nut 20 may also include a third material 24. Figure 5 presents an exemplary alternative embodiment of the trim control device 14, further illustrating the system’s adaptability and versatility in various configurations. The exemplary embodiment in Figure 5 is provided with a similar transmission mechanism 16 as the exemplary embodiment of figure 4, except that the trim control device 14 comprises a first electric actuator 6 and a second electric actuator 7. A transmission mechanism 16 is connected from the first electric actuator 6 to the trim member 15. Another transmission mechanism 16 is connected between the second electric actuator 7 and the trim member 15.

[0079] The alternative embodiment of the trim control device 14 depicted in Figure 5 may incorporate modifications to the transmission mechanism 16, actuator arrangement, or other components. These modifications may be aimed at optimizing performance, improving efficiency, or simplifying integration within the vessel 11.

[0080] Figure 6 presents yet another embodiment of the trim control device 14, further illustrating the system’s adaptability and versatility in various configurations. Figure 6 comprises a plurality of connecting gears between the first electric actuator 6 and the trim member 15. Figure 7 provides a perspective cross-sectional view of an exemplary embodiemnt of a dual material component 23 and its interacting member 20.

[0081] This figure illustrates the dual material component 23 and its interacting transmission member (nut 20), within the transmission mechanism 16, highlighting the interplay be¬ tween the first core material 18 and the second surface material 19. The first core material 18, characterized by its high strength, forms the structural foundation of the transmission mechanism 16, ensuring its robustness and durability. The second surface material 19, with its low coefficient of friction, facilitates smooth and efficient movement between interacting parts, minimizing wear and enhancing performance. REBO6995

[0082] The cross-sectional view in Figure 7 reveals the internal configuration of the dual mate¬ rial component 23 and the interacting transmission member (nut 20), i.e. the rotatable threaded shaft 17, the nut 20, and their interaction. Figure 7 shows how the rotation of the rotatable threaded shaft 17, driven by the first electric actuator 6 translates into linear motion of the nut 20, which can be connected to the trim member 15 directly or via additional transmission member as disclosed in WO2013068515A1 and W02020071988A1, respectively.

[0083] The dual material component 23 includes a first core material 18. The first core material 18 may exhibit high strength. In some embodiments the high strength may also result in high stiffness. High strength and stiffness are relative and should be seen in the context of the working environment of the dual material component 23 and especially in relation to the second surface material 19.

[0084] Exemplary, none-limiting strength values may in some configurations be characterized by specific values for Flexural / Tensile Modulus (15 GPa - 25 GPa).

[0085] The first core material 18 may be composed of a reinforced polymer material, such as glass fiber and polyamide composite. Other examples of the first core material 18 may include Carbon fiber reinforced polymer, Kevlar reinforced composite, Aluminum alloy, or High tensile steel.

[0086] The dual material component 23 includes a second surface material 19. The second surface material 19 is fixed to the first core material 18. For example, the second surface materials 19 may be chemically bonded, mechanically fastened using screws, rivets, or clips, co-molded or over-molded, shrink-fitted, adhered using a high-strength adhesive, or interwoven or braided with the first core material 18, forming a composite structure.

[0087] It may in this context be noted that a two-part component may comprises two distinct materials that are structurally and functionally integrated into a single unit.

[0088] Each material contributes specific mechanical, chemical, or aesthetic properties that together define the overall performance of the component.

[0089] The materials are typically joined through processes such as co-molding, overmolding, bonding, sintering, or mechanical interlocking, ensuring that both remain substantive and load-bearing parts of the final structure rather than superficial additions.

[0090] In such a configuration, the interface between the materials forms a deliberate and engineered transition zone designed to manage stresses, adhesion, or property gradients. This integration allows for combinations such as rigidity with flexibility, thermal stability with REBO6995

[0091] tactile comfort, or high strength with low weight — properties that could not be achieved by a single material alone.

[0092] The second surface material 19 may have a low coefficient of friction towards an interacting transmission member. This low coefficient of friction can be characterized by a coefficient of friction less than 0.1, or between 0.05 and 0.1, with an optimal value around 0.06. The low coefficient of friction may be present between components in the transmission mechanism 16, i.e. between the dual component material 23 and its interacting member, which in some embodiments means between the rotatable threaded shaft 17 and the nut 20.

[0093] The second surface material 19 may specifically be selected or engineered such that its coefficient of friction with the interacting transmission member is lower than the corresponding coefficient of friction between the first core material 18 and the interacting transmission member. This differential ensures that, when the second surface material 19 is interposed between the first core material 18 and the interacting transmission mem-ber, operational friction and associated wear are substantially reduced compared to an arrangement in which the first core material 18 directly contacts the interacting transmission member. The lower coefficient of friction provided by the second surface material 19 thus enhances the transmission efficiency, prolongs component life, and allows for higher operational speeds or lower actuation forces.

[0094] The second surface material 19 may be made of polyamide. Other examples of the second surface material 19 may include Polytetrafluorethylene (PTFE), Ultra-high-molecular-weight polyethylene (UHMWPE), Polyether ether ketone (PEEK), Acetal homopolymer (Delrin), High-density polyethylene (HDPE), Polyoxymethylene (POM), or Polyethylene terephthalate (PET).

[0095] By providing a dual material component 23 with a second surface material 19 with a low friction, this means that the torque required from the first electric actuator 6 and e.g. a motor is less, simultaneously as the transmission ratio of the transmission is increased further increases the displacement speed of the trim member 15. The transmission ratio of the transmission can e.g. be increased by an increased winding angle of a threaded shaft 17. Accordingly, the first electric actuator 6 can be smaller and the current required to power the first electric actuator 6 is less and still the speed of the trim member 15 be increased. Since the first electric actuator 6 is smaller and needs smaller cabling, whereby whole the trim control system 10 can be smaller. This means that the trim control system 10 can be reduced in size, less material is needed, and cost therefore can be held low. REBO6995

[0096] The nut 20 may include a third material 24. The third material 24 is adapted to have a low coefficient of friction against second surface material 19. This low coefficient of friction is characterized by a coefficient of friction less than 0.1, or between 0.05 and 0.1, with an optimal value around 0.06. The third material 24 may be made of polyoxymethylene or polyoxymethylene filled with polytetrafluoroethylene. Examples of the third material 24 may include Polytetrafluorethylene (PTFE), Ultra-high-molecular-weight polyethylene (UHMWPE), Polyether ether ketone (PEEK), Acetal homopolymer (Delrin), High-density polyethylene (HDPE), Polyoxymethylene (POM), Nylon 6 / 6, Lubricated nylon, Fluoroelastomers (FKM), or Polyethylene terephthalate (PET).

[0097] Example 1. A trim control system 10 for a vessel 11, comprising:

[0098] an electronic controller 1 configured to control at least one trim control device 14 of the trim control system 10;

[0099] a distribution unit 2 configured to supply a first electric actuator 6 and the electronic con¬ troller 1 with electricity,

[0100] at least one trim control device 14, configured to be arranged at a transom 13 of a hull 12 of a vessel 11, the trim control device 14 comprising the first electric actuators 6 configured to actuate a trim member 15, wherein

[0101] the distribution unit 2 comprising a step-up device 8 configured to increase an input volt¬ age from a fixed voltage of the vessel 11 to a higher voltage, and the distribution unit 2 is configured to distribute the input voltage to the electronic controller 1 and the higher voltage to the first electric actuator 6.

[0102] Example 2. The trim control system 10 according to example 1, wherein the trim control device 14 is configured to actuate the trim member 15 via a transmission mechanism 16, and the transmission mechanism 16 comprising a dual material component 23, in which a first core material 18 has a high strength and a second surface material 19 has a low coefficient of friction against an interacting transmission member.

[0103] Example 3. A trim control system 10 for a vessel 11, comprising:

[0104] an electronic controller 1 configured to control the electronics of the trim control system 10;

[0105] a distribution unit 2 configured to supply a first electric actuator 6 with electricity, a step-up device 8 configured to increase a voltage from a fixed voltage of the vessel 11 to a higher voltage; REBO6995

[0106] at least one trim control device 14, configured to be arranged at a transom 13 of a hull 12 of a vessel 11, wherein the trim control device 14 comprising the first electric actua¬ tors 6 configured to receive the increased voltage and to actuate a trim member 15 via a transmission mechanism 16, the transmission mechanism 16 comprising a dual material component 23, in which a first core material 18 has a high strength and a second surface material 19 has a low coefficient of friction.

[0107] Example 4. The trim control system 10 according to one of the examples 2 to 3, wherein the second surface material 19 covers at least part of the first core material 18.

[0108] Example 5. The trim control system 10 according to any of examples 2 to 4, wherein the second surface material 19 is at least partially chemically bonded, mechanically fastened, co-molded, over-molded, or shrink-fitted on to the first core material 18.

[0109] Example 6. The trim control system 10 according to any of examples 1 to 5, wherein the step-up device 8 is configured to increase the voltage from 12 - 24 V up to at least 30 V, 36 V or 48 V.

[0110] Example 7. The trim control system 10 according to any of examples 2 to 6, wherein the transmission mechanism 16 further comprises a rotatable threaded shaft 17 and a nut 20. Example 8. The trim control system 10 according to example 7, wherein the rotatable threaded shaft 17 is the dual material component 23 and the nut 20 is the interacting transmission member.

[0111] Example 9. The trim control system 10 according to any of examples 7 to 8, wherein the nut 20 is arranged to move linearly when the rotatable threaded shaft 17 rotates.

[0112] Example 10. The trim control system 10 according to any of examples 7 to 9, wherein the nut 20 includes a third material 24.

[0113] Example 11. The trim control system 10 according to example 10, wherein the third ma- terial 24 comprises polyoxymethylene and polytetrafluoroethylene.

[0114] Example 12. The trim control system 10 according to any of examples 2 to 11, wherein the first core material 18 is a fiber reinforced polymer.

[0115] Example 13. The trim control system 10 according to any of examples 2 to 12 wherein the second surface material 19 comprises a polyamide material.

[0116] Example 14. The trim control system 10 according to any one of examples 2 to 13, wherein the second surface material 19 of the dual material component 23 has a coefficient of REBO6995

[0117] friction between 0.05 and 0.1 towards an interacting transmission member.

[0118] Example 15. The trim control system 10 according to any of examples 1 to 13, wherein the trim control device 14 comprises a second electric actuator 7, wherein the first electric actuator 6 and second electric actuator 7 is arranged to actuate the same trim member 15 via separate transmission mechanism 16.

[0119] Example 16. vessel 11 provided with a trim control system 10 according to any of the preceding examples, wherein the trim control device 14 is arranged at the transom 13 of the hull 12.

[0120] The terminology used herein is for the purpose of describing particular aspects only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. As used herein, the term "and / or” includes any and all combinations of one or more of the associated listed items. It will be further understood that the terms "comprises," "comprising," "includes," and / or "including" when used herein spec-ify the presence of stated features, integers, actions, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, actions, steps, operations, elements, components, and / or groups thereof.

[0121] It will be understood that, although the terms first, second, etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element without departing from the scope of the present disclosure.

[0122] Relative terms such as "below" or "above" or "upper" or "lower" or "horizontal" or "vertical" may be used herein to describe a relationship of one element to another element as illus-trated in the Figures. It will be understood that these terms and those discussed above are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. It will be understood that when an element is referred to as being "connected” or "coupled" to another element, it can be directly connected or coupled to the other element, or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.

[0123] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms used herein should REBO6995

[0124] be interpreted as having a meaning consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0125] It is to be understood that the present disclosure is not limited to the aspects described above and illustrated in the drawings; rather, the skilled person will recognize that many changes and modifications may be made within the scope of the present disclosure and appended claims. In the drawings and specification, there have been disclosed aspects for purposes of illustration only and not for purposes of limitation, the scope of the disclosure being set forth in the following claims.

Claims

REBO6995Claims1. A trim control system (10) for a vessel (11), comprising:an electronic controller (1) configured to control at least one trim control device (14) of the trim control system (10);a distribution unit (2) configured to supply a first electric actuator (6) and the electronic controller (1) with electricity,at least one trim control device (14), configured to be arranged at a transom (13) of a hull (12) of a vessel (11), the trim control device (14) comprising the first electric actuators (6) configured to actuate a trim member (15), whereinthe distribution unit (2) comprising a step-up device (8) configured to increase an input voltage from a fixed voltage of the vessel (11) to a higher voltage, and the distribution unit (2) is configured to distribute the input voltage to the electronic controller (1) and the higher voltage to the first electric actuator (6).

2. The trim control system (10) according to one of the claim 1, wherein the trim control device (14) is configured to actuate the trim member (15) via a transmission mech¬ anism (16), and the transmission mechanism (16) comprising a dual material com¬ ponent (23), in which a first core material (18) has a higher strength compared to a corresponding strength of a second surface material (19) and the second surface material (19) has a coefficient of friction against an interacting transmission member being lower than a corresponding coefficient between the first core material (18) and the interacting transmission member.

3. The trim control system (10) according to one of the claim 2, wherein the second surface material (19) covers at least part of the first core material (18).

4. The trim control system (10) according to any of claims 2 to 3, wherein the second surface material (19) is at least partially chemically bonded, mechanically fastened, co-molded, over-molded, or shrink-fitted on to the first core material (18).

5. The trim control system (10) according to any of claims 2 to 4, wherein the step-up device (8) is configured to increase the voltage from 12 - 24 V up to at least 30 V.

6. The trim control system (10) according to any of claims 2 to 5, wherein the trans¬ mission mechanism (16) further comprises a rotatable threaded shaft (17) and a nut (20).

7. The trim control system (10) according to claim 6, wherein the rotatable threaded shaft (17) is the dual material component (23), and the nut (20) is the interactingREBO6995transmission member,8. The trim control system (10) according to any of claims 6 to 7, wherein the nut (20) includes a third material (24).

9. The trim control system (10) according to claim 8, wherein the third material (24) comprises polyoxymethylene or polyoxymethylene and polytetrafluoroethylene.

10. The trim control system (10) according to any of claims 2 to 9, wherein the first core material (18) is a fiber reinforced polymer.

11. The trim control system (10) according to any of claims 2 to 10 wherein the second surface material (19) comprises a polyamide material.

12. The trim control system (10) according to any of claims 2 to 11, wherein the trim control device (14) comprises a second electric actuator (7), wherein the first electric actuator(s) (6) and second electric actuator(s) (7) are arranged to actuate the same trim member (15) via separate transmission mechanism (16).

13. vessel (11) provided with a trim control system (10) according to any of the preceding claims, wherein the trim control device (14) is arranged at the transom (13) of the hull

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