EP1626000A2 - Hydraulic steering system for marine motors - Google Patents
Hydraulic steering system for marine motors Download PDFInfo
- Publication number
- EP1626000A2 EP1626000A2 EP05015283A EP05015283A EP1626000A2 EP 1626000 A2 EP1626000 A2 EP 1626000A2 EP 05015283 A EP05015283 A EP 05015283A EP 05015283 A EP05015283 A EP 05015283A EP 1626000 A2 EP1626000 A2 EP 1626000A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- oil
- cylinder
- hydraulic cylinder
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005452 bending Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
- B63H20/08—Means enabling movement of the position of the propulsion element, e.g. for trim, tilt or steering; Control of trim or tilt
- B63H20/10—Means enabling trim or tilt, or lifting of the propulsion element when an obstruction is hit; Control of trim or tilt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
- B63H20/08—Means enabling movement of the position of the propulsion element, e.g. for trim, tilt or steering; Control of trim or tilt
- B63H20/12—Means enabling steering
Definitions
- the present invention refers to a hydraulic steering system for marine motors.
- small craft such as motor boats, rubber dinghies and small pleasure craft, generally use one or more outboard or inboard marine motors with power that can range from 40 to 300 horsepower depending upon the type of boat.
- This type of marine motor is generally mounted in the transom of the boat so as to be able to rotate around a horizontal axis to adjust the tilt of the stem of the motor and around a vertical axis to adjust steering of the boat.
- a steering system comprising a hydraulic cylinder mounted slidably on a shaft disposed in the transom transversally with respect to the longitudinal direction of the craft.
- a lever connected integrally to the front part of the motor casing is constrained to said hydraulic cylinder. Translation of the hydraulic cylinder thus causes a rotation of the motor.
- Two oil supply hoses connected to an oil tank in which an oil pump is provided are mounted at the two ends of the moveable cylinder.
- the oil pump is controlled by the steering of the boat. In this manner, according to the steering given, the oil is fed into one end or the other of the cylinder. As a result the cylinder translates in one direction or the other on the transverse shaft, causing the front lever of the motor and thus also the motor to rotate around its vertical axis of pivoting.
- the object of the present invention is to overcome the drawbacks of the prior art, providing a steering system for a marine motor that is reliable, practical, versatile, inexpensive and simple to produce.
- the hydraulic steering system for marine motors comprises:
- the main characteristic of the invention is represented by the fact that ducts that feed oil respectively into said two chambers of the hydraulic cylinder are formed inside said supporting shaft.
- the flexible oil supply hoses connected to the oil pump, can be put into communication with the ducts formed inside the shaft to feed the chambers of the hydraulic cylinder. Since the shaft of the hydraulic cylinder is fixed, the flexible hoses do not undergo any bending during translation of the hydraulic cylinder. As a result, a greater reliability of steering is achieved and deterioration of the flexible oil supply hoses is avoided.
- the steering system 1 comprises two side supporting brackets 2, shaped substantially as an upturned Z, which support the two ends of a rod 3 designed to be supported by a motor assembly 6 and the two ends of a shaft 4 supporting a hydraulic cylinder 5.
- the rod 3 and the shaft 4 are disposed parallel to each other so as to form with the side mounting brackets 2 a substantially trapezoid configuration which is mounted integrally in the transom of the boat.
- the rod 3 and the shaft 4 are disposed transversally with respect to the longitudinal direction of the boat, in which the rod 3 is shorter in length than the shaft 4 and is disposed forward with respect thereto.
- the rod 3 has on its side surface, near its ends, outer threads 30 engaged by nuts 31 for fixing of side mounting brackets 2.
- the shaft 4 on the other hand, has at its ends inner threads, disposed axially, engaged by bolts 41 for fixing to the side mounting brackets 2.
- the motor assembly 6 is fixed to the transom of the boat and comprises a supporting flange 60 in which a marine motor 61 is pivoted so as to be able to rotate around a substantially vertical axis.
- the flange 60 has at the front two protrusions 62 provided with coaxial through holes 63 able to receive the rod 3. In this manner the flange 60 can rotate around a horizontal transverse axis defined by the rod 3 and the motor 61 can rotate around a vertical axis defined by the vertical pivot of the motor 61 with respect to the flange 60.
- the motor 61 has at the front a bar 64 constrained to the casing of the motor.
- a through hole 65 is formed at the end of the front bar of the motor.
- an articulated system 7 which provides a flange 70 that is constrained to the front bar 64 of the motor by means of a bolt 71 which engages in the hole 65 of the front bar 64. In this manner, translation of the hydraulic cylinder 5 on the shaft 4 leads to application of a force on the front bar 64 of the motor and thus a rotation of the motor 61.
- the hydraulic cylinder 5 is hollow on the inside and has a cylindrical axial chamber 50 open on both ends. Near the ends, in the axial chamber 50 of the cylinder 5, inner threads 51 designed to engage tightly with outer threads 53 formed in respective side closing bushes 54 of the hydraulic cylinder 5 are formed.
- Each bush 54 has an axial through hole 55 in which is provided a cylindrical gasket 56 which allows slidable tight coupling with the outside lateral surface of the shaft 4.
- the shaft 4 has, in a central position, a piston 40 with a larger diameter that provides in its side surface gaskets 40' which allow a sliding watertight coupling with the inner side surface of the cylinder 5.
- a first axial duct 42 which extends to the left with respect to the piston 40 and a second axial duct 44 with extends to the right with respect to the to the piston 40 are formed in the shaft 4.
- the first and second ducts 42 and 44 of the shaft 4 extend to the ends of the shaft 4 and are tightly closed by end bolts 41.
- the first and second ducts 42 and 44 of the shaft 4 end with respective radial ducts 43, 45 opening respectively into the first chamber 57 and into the second chamber 58, near the piston 40.
- first L-shaped (to the left) connector 46 communicating with the first axial duct 42 of the shaft 4 and a second L-shaped (to the right) connector 49 communicating with the second axial duct 44 of the shaft 4 are provided.
- the first L-shaped connector 46 is connected, by means of another L-shaped connector 47 to a first flexible oil supply hose 48 which extends to the left (with reference to Figure 2) to connect to the oil pump.
- the second L-shaped connector 49 is connected, by means of a double L-shaped connector 32, to an axial duct 34 formed in the transverse rod 3.
- the axial duct 34 extends for the whole length of the transverse rod 3 so as to communicate with a second flexible oil supply hose 33 which extends to the left (with reference to Figure 2) to connect with the oil pump.
- a duct 147 communicating with the first duct 42 of the shaft 4 is formed in the left-hand bracket 2 and a duct 132 which puts the second duct 44 of the shaft 4 into communication with the duct 34 of the rod 3 is formed in the right-hand bracket 2.
- a first connector 148 communicating with the duct 147 of the bracket to receive the oil supply hose 48 and a second connector 133 communicating with the duct 34 of the rod 3 to receive the oil supply hose 33 are provided in the outer side of the left-hand bracket 2.
- a duct 232 communicating only with the second duct 44 of the shaft 4 is formed in the right-hand bracket 2.
- a connector 233 communicating with the duct 232 and designed to receive the oil supply hose 33 is provided in the outer side wall of the right-hand bracket 2.
- a front supply can be provided, in which the oil supply hoses 48, 33 supply the steering system 1 frontally from one side and from the other.
- two ducts 147 and 232 communicating respectively with the ducts 42 and 44 of the shaft 4 can be provided in the brackets 2.
- connectors 348 and 333 communicating with the ducts 147 and 232 to receive frontally the oil supply hoses 48 and 33 are provided in the front part of the brackets 2.
- Two upward protruding blocks 72 are formed on the lateral surface of the cylinder 5 near the ends.
- the blocks 72 have respective coaxial holes 73 disposed along the horizontal axis parallel to the axis of the cylinder 5.
- Respective flanges 75 are fixed integrally to the blocks 72 by means of pins 74 placed in the holes 73.
- An arm 77 is pivoted to the other end of each side flange by means of a pin 76 with a vertical axis.
- the other ends of the two arms 77 are pivoted, by means of respective pins with a vertical axis 78, to the central flange 70.
- the arms 77 behave as connecting rods and can rotate around the vertical pins 76 and 78 disposed at their ends.
- the central flange 70 is pivoted, by means of the central pin 71 with a vertical axis, to the front bar 64 of the motor.
- the pin 71 of the front bar of the motor is disposed in a central position and the two pins 78 of the two arms 77 are disposed in diametrically opposite directions with respect to the axis of the central pin 71.
- the central flange 70 can perform a movement in an arc of a circle on a horizontal plane thanks to the constraints of the vertical pins 76 and 78, without requiring any rotation of the cylinder 5. Consequently, this configuration of the articulated system 7 allows a rotation of the motor 61 following translation of the cylinder 5 on the shaft 4, avoiding any rotation of the cylinder 5 around the shaft 4.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Actuator (AREA)
- Power Steering Mechanism (AREA)
- Fluid-Pressure Circuits (AREA)
- Servomotors (AREA)
- Farming Of Fish And Shellfish (AREA)
- Guiding Agricultural Machines (AREA)
Abstract
Description
- The present invention refers to a hydraulic steering system for marine motors. As is known, small craft, such as motor boats, rubber dinghies and small pleasure craft, generally use one or more outboard or inboard marine motors with power that can range from 40 to 300 horsepower depending upon the type of boat.
- This type of marine motor is generally mounted in the transom of the boat so as to be able to rotate around a horizontal axis to adjust the tilt of the stem of the motor and around a vertical axis to adjust steering of the boat. For this purpose a steering system is provided comprising a hydraulic cylinder mounted slidably on a shaft disposed in the transom transversally with respect to the longitudinal direction of the craft. A lever connected integrally to the front part of the motor casing is constrained to said hydraulic cylinder. Translation of the hydraulic cylinder thus causes a rotation of the motor.
- Two oil supply hoses connected to an oil tank in which an oil pump is provided are mounted at the two ends of the moveable cylinder. The oil pump is controlled by the steering of the boat. In this manner, according to the steering given, the oil is fed into one end or the other of the cylinder. As a result the cylinder translates in one direction or the other on the transverse shaft, causing the front lever of the motor and thus also the motor to rotate around its vertical axis of pivoting.
- Said steering system according to the prior art presents some drawbacks. In fact the movement of the cylinder on the transverse shaft also causes movement of the oil supply hoses which are connected to the ends of the cylinder. As a result, these oil supply hoses can bend excessively and create blockages which obstruct the passage of the oil, with the result of failure of the steering manoeuvre. Furthermore, the continuous bending of the oil hoses leads to a rapid deterioration and wear thereof.
- Another drawback of steering systems of the prior art is represented by the type of constraint between the front lever of the motor and the hydraulic cylinder. In fact, when the hydraulic cylinder comes into proximity with the lateral end of stroke positions, because of the connection which constrains it to the front lever of the motor, it makes a partial rotation around the axis of the transverse shaft, together with the translation. Clearly said rototranslation of the hydraulic cylinder leads to further bending of the oil supply hoses with the above mentioned drawbacks.
- The object of the present invention is to overcome the drawbacks of the prior art, providing a steering system for a marine motor that is reliable, practical, versatile, inexpensive and simple to produce.
- This object is achieved according to the invention with the characteristics listed in appended independent claim 1.
- Advantageous embodiments of the invention are apparent from the dependent claims.
- The hydraulic steering system for marine motors according to the invention comprises:
- a supporting rod designed to be disposed at the stem of the boat, in a transverse direction with respect to the longitudinal direction of the boat and designed to be supported by a flange in which a marine motor is pivoted.
- a hydraulic cylinder mounted slidably on a fixed shaft disposed parallel to said supporting rod and defining two chambers supplied with oil to allow translation of the cylinder on said fixed shaft, and
- an articulated connecting system that connects said hydraulic cylinder to a bar that protrudes forward from said marine engine.
- The main characteristic of the invention is represented by the fact that ducts that feed oil respectively into said two chambers of the hydraulic cylinder are formed inside said supporting shaft.
- In this manner the flexible oil supply hoses, connected to the oil pump, can be put into communication with the ducts formed inside the shaft to feed the chambers of the hydraulic cylinder. Since the shaft of the hydraulic cylinder is fixed, the flexible hoses do not undergo any bending during translation of the hydraulic cylinder. As a result, a greater reliability of steering is achieved and deterioration of the flexible oil supply hoses is avoided.
- Further characteristics of the invention will be made clearer by the detailed description that follows, referring to a purely exemplifying and therefore non-limiting embodiments thereof, illustrated in the appended drawings, in which:
- Figure 1 is a top plan view illustrating a steering system according to the invention and, diagrammatically exploded, a marine motor supported by a supporting flange illustrated partially in section;
- Figure 2 is an axial sectional view of the steering system of Figure 1, in which, for greater clarity, some supporting elements have been omitted and the connecting ducts are illustrated on view;
- Figure 2A is a sectional view, like Figure 2, illustrating a first variant in which the connecting ducts are formed in the supporting side brackets;
- Figure 2B is a sectional view, like Figure 2, illustrating a second variant in which the oil is supplied laterally into the two side brackets;
- Figure 2C is a sectional view, like Figure 2, illustrating a third variant in which the oil is supplied from the front into the two side brackets;
- Figure 3 is a sectional view of the hydraulic cylinder of Figure 2 with two side closing inlets, one of which is shown in section and the other on view;
- Figure 4 is a sectional view, partially broken off, illustrating a detail of the articulated system of the steering system of Figure 1; and
- Figure 5 is a sectional view taken along the plane of section V-V of Figure 4.
- The steering system according to the invention, denoted as a whole with reference numeral 1, is described with the aid of the figures.
- With reference for now to Figure 1, the steering system 1 comprises two
side supporting brackets 2, shaped substantially as an upturned Z, which support the two ends of arod 3 designed to be supported by amotor assembly 6 and the two ends of a shaft 4 supporting ahydraulic cylinder 5. - The
rod 3 and the shaft 4 are disposed parallel to each other so as to form with the side mounting brackets 2 a substantially trapezoid configuration which is mounted integrally in the transom of the boat. Therod 3 and the shaft 4 are disposed transversally with respect to the longitudinal direction of the boat, in which therod 3 is shorter in length than the shaft 4 and is disposed forward with respect thereto. - The
rod 3 has on its side surface, near its ends,outer threads 30 engaged bynuts 31 for fixing ofside mounting brackets 2. The shaft 4, on the other hand, has at its ends inner threads, disposed axially, engaged bybolts 41 for fixing to theside mounting brackets 2. - The
motor assembly 6 is fixed to the transom of the boat and comprises a supportingflange 60 in which amarine motor 61 is pivoted so as to be able to rotate around a substantially vertical axis. Theflange 60 has at the front twoprotrusions 62 provided with coaxial throughholes 63 able to receive therod 3. In this manner theflange 60 can rotate around a horizontal transverse axis defined by therod 3 and themotor 61 can rotate around a vertical axis defined by the vertical pivot of themotor 61 with respect to theflange 60. - The
motor 61 has at the front abar 64 constrained to the casing of the motor. A throughhole 65 is formed at the end of the front bar of the motor. - Mounted on the
hydraulic cylinder 5 is an articulated system 7 which provides aflange 70 that is constrained to thefront bar 64 of the motor by means of abolt 71 which engages in thehole 65 of thefront bar 64. In this manner, translation of thehydraulic cylinder 5 on the shaft 4 leads to application of a force on thefront bar 64 of the motor and thus a rotation of themotor 61. - As shown in Figure 3, the
hydraulic cylinder 5 is hollow on the inside and has a cylindricalaxial chamber 50 open on both ends. Near the ends, in theaxial chamber 50 of thecylinder 5,inner threads 51 designed to engage tightly withouter threads 53 formed in respectiveside closing bushes 54 of thehydraulic cylinder 5 are formed. - Each
bush 54 has an axial throughhole 55 in which is provided acylindrical gasket 56 which allows slidable tight coupling with the outside lateral surface of the shaft 4. - With reference to Figure 2, the shaft 4 has, in a central position, a
piston 40 with a larger diameter that provides in its side surface gaskets 40' which allow a sliding watertight coupling with the inner side surface of thecylinder 5. - In this manner, when the
hydraulic cylinder 5 is mounted on the shaft 4 and theside bushes 54 are closed, thefixed piston 40 of the shaft 4 divides thechamber 50 of the cylinder into twolateral chambers first chamber 57 and asecond chamber 58, disposed respectively on the left and on the right with respect to thepiston 40, with reference to Figure 2. - A first
axial duct 42 which extends to the left with respect to thepiston 40 and a secondaxial duct 44 with extends to the right with respect to the to thepiston 40 are formed in the shaft 4. The first andsecond ducts end bolts 41. The first andsecond ducts radial ducts 43, 45 opening respectively into thefirst chamber 57 and into thesecond chamber 58, near thepiston 40. - Near the ends of the shaft 4 a first L-shaped (to the left)
connector 46 communicating with the firstaxial duct 42 of the shaft 4 and a second L-shaped (to the right)connector 49 communicating with the secondaxial duct 44 of the shaft 4 are provided. The first L-shaped connector 46 is connected, by means of another L-shaped connector 47 to a first flexibleoil supply hose 48 which extends to the left (with reference to Figure 2) to connect to the oil pump. - The second L-
shaped connector 49 is connected, by means of a double L-shaped connector 32, to anaxial duct 34 formed in thetransverse rod 3. Theaxial duct 34 extends for the whole length of thetransverse rod 3 so as to communicate with a second flexible oil supply hose 33 which extends to the left (with reference to Figure 2) to connect with the oil pump. - In Figures 1 and 2,
external connectors brackets 2. - As shown in Figure 2A, a
duct 147 communicating with thefirst duct 42 of the shaft 4 is formed in the left-hand bracket 2 and aduct 132 which puts thesecond duct 44 of the shaft 4 into communication with theduct 34 of therod 3 is formed in the right-hand bracket 2. Afirst connector 148 communicating with theduct 147 of the bracket to receive theoil supply hose 48 and asecond connector 133 communicating with theduct 34 of therod 3 to receive the oil supply hose 33 are provided in the outer side of the left-hand bracket 2. - Even if a lateral supply in which the
oil supply hoses 48 and 33 are both disposed on one side (the left-hand side) of the steering system 1 has been illustrated in Figures 1 and 2, it must be considered that a lateral supply on both sides of the steering system 1 can also be provided. In this case passage of the oil inside therod 3 is not necessary. - As shown in Figure 2B, in this case a
duct 232 communicating only with thesecond duct 44 of the shaft 4 is formed in the right-hand bracket 2. Thus aconnector 233 communicating with theduct 232 and designed to receive the oil supply hose 33 is provided in the outer side wall of the right-hand bracket 2. - Furthermore, according to a variant of the present invention, a front supply can be provided, in which the
oil supply hoses 48, 33 supply the steering system 1 frontally from one side and from the other. - As shown in Figure 3C, in this case two
ducts ducts brackets 2. Thusconnectors ducts oil supply hoses 48 and 33 are provided in the front part of thebrackets 2. - With references to Figure 2, when the pump supplies oil into the
first hose 48, the oil flows through the left-hand connectors first duct 42 of the shaft and fills thefirst chamber 57 of the cylinder, causing a translation of thecylinder 5 towards the left in the direction of the arrow S. On the other hand, when the pump supplies oil into the second hose 33, the oil flows into theaxial duct 34 of thetransverse rod 3 and flows through the right-hand connectors second duct 44 of the shaft and fills thesecond chamber 58 of the cylinder, causing a translation toward the right of thecylinder 5 in the direction of the arrow D. - It should be noted that during the translational movement of the
cylinder 5, theoil hoses 48 and 33 are immobile because they are constrained at the left-hand ends of the shaft 4 and of thetransverse rod 3. - With reference to Figures 1, 4 and 5 an articulated system 7 is described which constrains the front bar of the
motor 64 to thehydraulic cylinder 5. - Two upward protruding blocks 72 are formed on the lateral surface of the
cylinder 5 near the ends. Theblocks 72 have respectivecoaxial holes 73 disposed along the horizontal axis parallel to the axis of thecylinder 5.Respective flanges 75 are fixed integrally to theblocks 72 by means ofpins 74 placed in theholes 73. - An
arm 77 is pivoted to the other end of each side flange by means of apin 76 with a vertical axis. The other ends of the twoarms 77 are pivoted, by means of respective pins with avertical axis 78, to thecentral flange 70. Thus thearms 77 behave as connecting rods and can rotate around thevertical pins - The
central flange 70 is pivoted, by means of thecentral pin 71 with a vertical axis, to thefront bar 64 of the motor. In thecentral flange 70 thepin 71 of the front bar of the motor is disposed in a central position and the twopins 78 of the twoarms 77 are disposed in diametrically opposite directions with respect to the axis of thecentral pin 71. - As a result, the
central flange 70 can perform a movement in an arc of a circle on a horizontal plane thanks to the constraints of thevertical pins cylinder 5. Consequently, this configuration of the articulated system 7 allows a rotation of themotor 61 following translation of thecylinder 5 on the shaft 4, avoiding any rotation of thecylinder 5 around the shaft 4. - Numerous changes and modifications of detail within the reach of a person skilled in the art can be made to the present embodiments of the invention without thereby departing from the scope of the invention as set forth in the appended claims.
Claims (7)
- A hydraulic steering system (1) for marine motors comprising:- a supporting rod (3) designed to be disposed at the stem of the boat, in a transverse direction with respect to the longitudinal direction of the boat and designed to be supported by a flange (60) in which a marine motor (61) is pivoted,- a hydraulic cylinder (5) mounted slidably on a fixed shaft (4) disposed parallel to said supporting rod (3) and defining two chambers (57, 58) supplied by oil to allow translation of the cylinder on said fixed shaft, and- an articulated connecting system (7) which connects said hydraulic cylinder (5) to a bar (64) that protrudes forward from said marine motor (61),
characterised in that
ducts (42, 43, 44, 45) which supply oil respectively in to said two chambers (57, 58) of the hydraulic cylinder (5) are formed inside said supporting shaft (4) of the cylinder (5) and said transverse supporting rod (3) has a duct (34) for passage of the oil connected to a duct (44) of said shaft (4), to allow supply on one side only. - A hydraulic system according to claim 1, characterised in that said ducts (42, 44) formed inside said shaft (4) are supplied with oil by means of flexible hoses (48, 33) connected to an oil pump.
- A hydraulic system according to claim 1 or 2, characterised in that said shaft (4) of the cylinder is connected to said supporting rod (3) by means of brackets (2) and said brackets have inner ducts (147, 132; 232) communicating with said ducts (42, 44) of said shaft.
- A hydraulic system according to claim 1 or 2, characterised in that said shaft (4) comprises:- a first axial duct (42) connected by means of connectors (46, 47) to a first flexible oil supply hose (48) and- a second axial duct (44) connected by means of connectors (49, 32) to said duct (34) formed in the supporting through rod (3) which in turn is connected to a second flexible oil supply hose (33).
- A hydraulic system according to any one of the preceding claims, characterised in that said shaft (4) comprises a fixed piston (40) disposed in a central position so as to divide said two oil chambers (57, 58) and said ducts (42, 44) formed in said shaft (4) open respectively into said two chambers (57, 58) by means of respective radial ducts (43, 45) disposed near said piston (40).
- A hydraulic system according to any one of the preceding claims, characterised in that said articulated connecting system (7) comprises:- two side flanges (75) fixed integrally to two protrusions (72) of said hydraulic cylinder (5),- two arms (77) pivoted with first vertical pivoting axes (76) to said side flanges (75) and with second vertical pivoting axes (78) to a central flange (70),
wherein said central flange (70) is pivoted with a vertical axis of pivoting (71) to said front bar (64) of the motor. - A hydraulic steering system (1) for marine motors comprising:- a supporting rod (3) designed to be disposed at the stem of the boat, in a transverse direction with respect to the lengthwise direction of the boat and designed to be supported by a flange (60) in which a marine motor (61) is pivoted,- a hydraulic cylinder (5) mounted slidably on a fixed shaft (4) disposed parallel to said supporting rod (3) and defining two chambers (57, 58) supplied with oil to allow translation of the cylinder on said fixed shaft, and- an articulated connecting system (7) which connects said hydraulic cylinder (5) to a bar (64) which protrudes forwards from said marine motor (61),
characterised in that said articulated connecting system (7) comprises:- two side flanges (75) fixed integrally to two protrusions (72) of said hydraulic cylinder (5),- two arms (77) pivoted with the first vertical axes of pivoting (76) to said side flanges (75) and with second vertical axes of pivoting (78) to a central flange (70),
wherein said central flange (70) is pivoted with a vertical axis of pivoting (71) to said front bar (64) of the motor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL05015283T PL1626000T3 (en) | 2004-08-09 | 2005-07-14 | Hydraulic steering system for marine motors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT001639A ITMI20041639A1 (en) | 2004-08-09 | 2004-08-09 | HYDRAULIC STEERING SYSTEM FOR MARINE ENGINES |
Publications (4)
Publication Number | Publication Date |
---|---|
EP1626000A2 true EP1626000A2 (en) | 2006-02-15 |
EP1626000A3 EP1626000A3 (en) | 2007-05-23 |
EP1626000B1 EP1626000B1 (en) | 2008-06-18 |
EP1626000B9 EP1626000B9 (en) | 2009-03-18 |
Family
ID=35335728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05015283A Active EP1626000B9 (en) | 2004-08-09 | 2005-07-14 | Hydraulic steering system for marine motors |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1626000B9 (en) |
AT (1) | ATE398569T1 (en) |
DE (1) | DE602005007543D1 (en) |
ES (1) | ES2308346T3 (en) |
IT (1) | ITMI20041639A1 (en) |
PL (1) | PL1626000T3 (en) |
PT (1) | PT1626000E (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4086161A1 (en) * | 2021-04-20 | 2022-11-09 | Yamaha Hatsudoki Kabushiki Kaisha | Outboard motor |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5997370A (en) * | 1998-01-23 | 1999-12-07 | Teleflex (Canada) Limited | Outboard hydraulic steering assembly with reduced support bracket rotation |
US6174211B1 (en) * | 1998-05-29 | 2001-01-16 | Sanshin Kogyo Kabushiki Kaisha | Tiller lock for outboard motor |
-
2004
- 2004-08-09 IT IT001639A patent/ITMI20041639A1/en unknown
-
2005
- 2005-07-14 PT PT05015283T patent/PT1626000E/en unknown
- 2005-07-14 DE DE602005007543T patent/DE602005007543D1/en active Active
- 2005-07-14 PL PL05015283T patent/PL1626000T3/en unknown
- 2005-07-14 AT AT05015283T patent/ATE398569T1/en not_active IP Right Cessation
- 2005-07-14 ES ES05015283T patent/ES2308346T3/en active Active
- 2005-07-14 EP EP05015283A patent/EP1626000B9/en active Active
Non-Patent Citations (1)
Title |
---|
None |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4086161A1 (en) * | 2021-04-20 | 2022-11-09 | Yamaha Hatsudoki Kabushiki Kaisha | Outboard motor |
Also Published As
Publication number | Publication date |
---|---|
ITMI20041639A1 (en) | 2004-11-09 |
EP1626000B9 (en) | 2009-03-18 |
EP1626000A3 (en) | 2007-05-23 |
EP1626000B1 (en) | 2008-06-18 |
PT1626000E (en) | 2008-09-16 |
PL1626000T3 (en) | 2008-11-28 |
ATE398569T1 (en) | 2008-07-15 |
DE602005007543D1 (en) | 2008-07-31 |
ES2308346T3 (en) | 2008-12-01 |
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