JP4884193B2 - Ship - Google Patents

Description

  The present invention relates to a ship provided with a turning device for turning a ship propulsion device around a swivel shaft.

  Conventionally, an outboard motor mounted on the stern is rotatably supported around a swivel shaft disposed in a vertical direction via a trim device, and is driven in response to a steering operation of a boat operator. It is comprised so that it may be steered by the steering apparatus. As a steering device for such an outboard motor, a moving member is provided in the vicinity of the outboard motor so as to be movable in the width direction of the hull, a steering bracket is fixed to the outboard motor, and the steering bracket is fixed to the outboard motor by the moving member. It is known that it is steered by rotating it around a swivel shaft.

  For example, in Patent Document 1 below, a rack case driven by a motor and movable in the hull width direction is provided, and a steering bracket fixed to the outboard motor is connected to a guide plate fixed to the rack case. A steering device is configured.

In such a steering device, when the operator turns the steering wheel and steers, the rack case is moved to the left and right in the hull width direction by the drive motor in response to the steering operation, and the steering is driven by the steering load of the drive motor. The bracket is rotated around the swivel shaft, and the outboard motor is steered by the steering torque.
Japanese Patent No. 2959044

  However, the outboard motor receives a load due to water pressure or the like at the time of turning, and this load changes depending on the turning state or the like. For example, the larger the turning angle or the turning speed, the larger the load. In particular, when turning to a large turning angle at a high turning speed, turning when accelerating / decelerating, etc., the load is likely to be larger.

  Therefore, when driving using a drive member such as a drive motor, in order to enable steering even when a large load is applied to the outboard motor at the time of steering, a drive member capable of obtaining a sufficiently large steering load is provided. It is necessary to use it. Here, when a drive motor is used, the obtained drive load has an upper limit depending on the performance of the motor, and the performance is lowered depending on the motor state such as temperature. Therefore, in order to obtain a sufficient turning weight while ensuring a desired driving speed, a larger motor is used, and there is a problem that the turning device is easily increased in size.

  Then, this invention makes it a subject to provide the ship which is easy to suppress the steering load required for steering when making a steering angle large, and to make a steering device small.

The invention according to claim 1, which solves the above problem, includes a ship propulsion device mounted so as to be steerable around a swivel shaft disposed in the vertical direction, and a steering device that steers the ship propulsion device. The steering device includes: a moving member movable in a hull width direction; and a steering bracket fixed to the vessel propulsion device and rotatable about the swivel shaft, the steering bracket and the moving member And the moving member is driven in the hull width direction, the steering bracket is rotated by receiving a steering load in the hull width direction with the connecting portion as a power point, in vessel boat propulsion unit is steered, the connecting portion includes a slide engaging portion provided on the steering bracket, the slide fitting portion provided on said moving member And a engaged a fitting member, fitting coalescence is configured to be movable in a radial direction with respect to the swivel axis, the distance from the connecting portion to the swivel axis, rotation of the steering bracket It is characterized in that it can be changed according to.

The invention according to claim 2 includes a marine vessel propulsion device that is mounted so as to be steerable around a swivel shaft that is disposed in the vertical direction, and a steering device that steers the marine vessel propulsion device. The apparatus includes a moving member movable in a width direction of the hull and a steering bracket fixed to the ship propulsion device and rotatable around the swivel shaft, and the steering bracket and the moving member are connected to each other at a connecting portion. By being connected and driving the moving member in the hull width direction, the steering bracket is rotated by receiving a steering load in the hull width direction with the connecting portion as a power point, and the ship propulsion device is turned. in a ship to be steered, the steering bracket comprises a first bracket arm fixed to the boat propulsion unit, said first bra is pivotally connected to the moving member And a second bracket arm which is telescopically connected to the Ttoamu, that distance from the connecting portion to the swivel axis, are capable of changing configuration according to the rotation of the steering bracket Features.

The invention according to claim 3, in addition to the configuration according to claim 2, One of the first and second bracket arms, has a cylindrical bore which opens toward the other side, the first and The other of the second bracket arms includes a sliding portion slidably accommodated in the cylindrical hole.

According to the first or second aspect of the invention, the steering bracket and the moving member are connected to each other at the connecting portion, and the separation distance from the connecting portion to the swivel shaft can be changed according to the rotation of the steering bracket. Since it is configured, when changing the turning angle, the position of the power point is changed according to the turning angle of the steering bracket, and the turning load required to turn the steering bracket by the moving member can be changed. Is possible. Therefore, even when a larger turning torque is required, the turning load can be reduced, and the turning device can be easily downsized by reducing the load on the driving device of the moving member.

According to the first aspect of the present invention, the connecting portion includes the slide fitting portion provided on the steering bracket and the fitting body provided on the moving member and fitted to the slide fitting portion. Since the combined body is configured to be movable in the radial direction with respect to the swivel shaft, the distance between the connecting portion and the swivel shaft can be changed by sliding the fitting body within the slide fitting portion. It is possible to suppress the steering load required to rotate the steering bracket by the moving member within a large angle range.

According to the second or third aspect of the invention, the steering bracket is fixed to the marine vessel propulsion device, the first bracket arm is pivotally connected to the moving member, and the first bracket arm is extendably connected. Since the first bracket arm and the second bracket arm expand and contract, the separation distance to the swivel shaft of the connecting portion can be changed. It is possible to suppress the steering load required to turn the steering bracket by the moving member within a large angle range.

Embodiments of the present invention will be described below.
Embodiment 1 of the Invention

  1 to 4 show the first embodiment.

  In FIG. 1, reference numeral 10 denotes a ship, which has a ship maneuvering unit 13 having a steering device 12 on the front side of a hull 11 and an outboard motor 15 as a ship propulsion device at the stern. The outboard motor 15 is attached to a clamp bracket 17 fixed to the stern plate 16 via a trim / tilt device 19, and a swivel shaft is vertically movable in a state in which the trim / tilt device can be tilted in the longitudinal direction of the hull. 18 is disposed, and is configured to be steerable by rotating around the swivel shaft 18.

  A steering device 20 for turning the outboard motor 15 is provided at a front position in the vicinity of the outboard motor 15. When the steering angle of the steering wheel 12a of the steering device 12 is detected by the steering angle detection sensor 21 and transmitted via the cable 22, the steering device 20 steers the outboard motor 15 in accordance with the steering angle. It is configured to let you.

  As shown in FIGS. 2 and 3, the steering device 20 is fixed to the outboard motor 15, a steering bracket 28 that can rotate about the swivel shaft 18 integrally with the outboard motor 15, A driving unit 27 for rotating the steering bracket 28 is provided, and these are connected by a connecting unit 30.

  The drive unit 27 includes a moving shaft 25 formed of a ball screw disposed in parallel with the tilt shaft 23 by a pair of support members 24 fixed to both ends of the tilt shaft 23 of the trim tilt device 19, and the moving shaft 25. And a moving unit 26 mounted so as to be movable in the width direction of the hull.

  The moving unit 26 has a housing 31 that is mounted so as to surround the moving shaft 25, and in this housing 31, a rotating moving member that is screwed into a ball screw of the moving shaft 25 and is rotatably supported by the housing 31. 32 is provided, and the housing 31 can be moved by rotating the rotary mover 32 by a DD motor (not shown). A fulcrum pin 35 is provided outside the housing 31 between the pair of protrusions 34 in parallel with the tilt shaft 23, and a connection bracket 36 as a moving member is fixed to the fulcrum pin 35 with respect to the housing 31. It is connected and supported in a state in which it cannot move in the left-right direction.

  As shown in FIG. 3, the connecting bracket 36 has an upper piece 36 a and a lower piece 36 b on the outboard motor 15 side, and a gap 36 c that can accommodate the distal end side of the steering bracket 28 is formed therebetween. In this gap 36c, a fitting column 37 as a fitting body slidably fitted to a slide fitting portion 39 of a steering bracket 28, which will be described later, is arranged to be laid over an upper piece 36a and a lower piece 36b. Yes. The fitting column 37 cannot move with respect to the connecting bracket 36.

  On the other hand, the steering bracket 28 extends from the swivel shaft 18 to the moving shaft 25 side, and a slide fitting portion 39 that can be fitted to the fitting column 37 of the connection bracket 36 is provided on the tip side. Here, the outboard motor 15 is fixed to the swivel shaft 18, and the steering bracket 28 is fixed to the outboard motor 15 by being fixed to the swivel shaft 18.

  The slide fitting portion 39 is a long hole formed along the radial direction of the swivel shaft 18, and the outer diameter of the fitting post 37 of the connection bracket 36 is between the positions where the distance to the swivel shaft 18 is different. It is continuously provided with a substantially equal constant width.

  In such a connecting portion 30 between the steering bracket 28 and the connecting bracket 36, the distal end side of the steering bracket 28 is accommodated in the gap 36 c of the connecting bracket 36, and the fitting column 37 penetrates the slide fitting portion 39. It is constituted by being arranged. Here, the front end side of the steering bracket 28 is in sliding contact with the upper piece 36 a and the lower piece 36 b of the coupling bracket 36, and the fitting support column 37 is in sliding contact with both sides of the slide fitting portion 39. Therefore, when the connection bracket 36 is held at an arbitrary position, the steering bracket 28 can be held at a fixed position without rattling.

  Next, operation | movement of the steering apparatus 20 of the ship 10 of such a structure is demonstrated.

  As shown in phantom lines in FIG. 4, when the steering device 12 steers from a state where the steering angle of the steering device 12 of the marine vessel maneuvering unit 13 is 0 degree and the turning angle of the outboard motor 15 is 0 degree, the steering angle is steered. It is detected by the angle detection sensor 21 and transmitted to the steering device 20 through the cable 22. Then, in the moving unit 26, the rotary mover 32 is driven to rotate by a predetermined amount corresponding to the steering angle by the DD type motor, and the moving unit 26 moves along the moving shaft 25 by a predetermined amount in the hull width direction as shown by a solid line in FIG. Moved to.

  As a result, the connecting bracket 36 of the moving unit 26 moves, and the fitting column 37 pushes the slide fitting portion 39 in the connecting portion 30, so that the steering bracket 28 moves in the hull width direction with the connecting portion 30 as a power point. In response to the steering load F, the swivel shaft 18 is rotated. As a result, steering torque is applied, and the outboard motor 15 together with the steering bracket 28 is steered to a steering angle θ corresponding to the steering angle of the steering device 12.

  At this time, as shown in FIG. 4, in the state in which the steering is started, the fitting column 37 of the connection bracket 36 has a minimum separation distance L1 closest to the swivel shaft 18 of the slide fitting portion 39 of the steering bracket 28. Placed in position. At this time, when the steering unit 28 is pressed in the hull width direction A with the steering load F by the moving unit 26, the obtained steering torque T is L1 · Fcos θ.

  During the turning, the fitting support column 37 is fixed to the connection bracket 36 and thus moves linearly in the direction of the arrow A along the moving shaft 25. On the other hand, the steering bracket 28 rotates about the swivel shaft 18 in the direction of arrow B, so that the fitting column 37 slides in a direction away from the swivel shaft 18 with respect to the slide fitting portion 39. For this reason, as the turning angle increases, the distance between the fitting post 37 and the swivel shaft 18 of the slide fitting portion 39 increases, and the steering bracket 28 is thickened at a position farther from the swivel shaft 18 to turn the fitting. A load will be applied.

  In the state where the steering wheel is turned to the maximum and reaches the turning angle θ, the fitting column 37 presses the position of the separation distance L2 farthest from the swivel shaft 18 of the slide fitting portion 39 to rotate the steering bracket 28. . When the steering bracket 28 is pressed in the hull width direction A with a constant turning load F by the moving unit, the turning torque T obtained at the turning angle θ at this time is L2 · Fcos θ.

  According to the ship 10 as described above, when the turning angle is increased, the steering bracket 28 can be rotated by applying the turning load F to a position further away from the swivel shaft 18 according to the turning angle. A larger steering torque T can be obtained. Therefore, even when a large turning torque is required for the outboard motor 15 by turning at a large turning angle, turning is performed while suppressing the turning load F required to turn the steering bracket 28 by the moving unit 26. The torque T can be secured, and the DD motor can be downsized to easily downsize the steering device 20.

  In the first embodiment, an example in which the turning angle is increased has been described. However, the same applies to a case in which the turning angle is decreased. When the absolute value of the turning angle increases, the turning angle from the swivel shaft 18 increases. The effect of this invention can be acquired when the separation distance of the connection part 30 increases.

  In the above description, since the moving shaft 25 is arranged in parallel with the tilt shaft 23, the distance between the fitting column 37 of the connection bracket 36 and the swivel shaft 18 is the longest when the turning angle θ is 0 degrees. Although it is configured to be arranged at a close position, the arrangement of the moving shaft 25 is not particularly limited and can be appropriately changed. For example, when there is a difference in the steering load between when turning to the right and when turning to the left, depending on the direction of rotation of the screw of the outboard motor 15, the steering wheel is turned to the side where the steering load is reduced. Thus, the moving shaft 25 can be disposed obliquely so that the distance between the fitting support 37 of the connecting bracket 36 and the swivel shaft 18 is the closest. In this way, on the side where the turning load becomes large, the distance between the fitting column 37 of the connection bracket 36 and the swivel shaft 18 can be increased, and the turning load can be further suppressed. .

  In the above description, the distance between the connecting portion 30 and the swivel shaft 18 is increased in accordance with the increase in the turning angle. However, the connecting portion is actively moved by various driving means. It is also possible to do.

Furthermore, in the above description, the connecting bracket 36, which is a moving member, is moved by a DD type motor. However, the connecting bracket 36 is not particularly limited, and any means that can move the moving member in the width direction of the hull can be selected as appropriate. Is possible.
[Embodiment 2 of the Invention]

  FIG. 5 shows a second embodiment of the present invention. The second embodiment of the present invention has the same configuration as that of the first embodiment of the present invention except that the steering bracket 45 is different.

  The steering bracket 45 according to the second embodiment is connected to a first bracket arm 46 fixed to the outboard motor 15 and a connection bracket 36 of the moving unit 26 by a connection pin 48 so as to be rotatable. And a second bracket arm 47 connected to the arm 46. In the steering bracket 45, a connecting portion 40 is configured by connecting a connecting pin 48 fixed to the connecting bracket 36 and a second bracket arm 47.

  The first bracket arm 46 is fixed to the outboard motor 15 at one end side, and has a cylindrical hole portion 49 that opens toward the second bracket arm 47 side at the other end side. The cylindrical hole 49 extends with a constant cross-sectional shape along the radial direction of the swivel shaft 18, and the opening 49 a at the end on the second bracket arm 47 side is reduced.

  On the other hand, the second bracket arm 47 is connected to the connecting pin 48 on one end side and is accommodated in the cylindrical hole portion 49 of the first bracket arm 46 on the other end side, and slides inside the cylindrical hole portion 49. The shaft portion 52 is slidably disposed through the opening 49 a of the cylindrical hole portion 49. A sliding member 53 for securing slidability within the cylindrical hole 49 is mounted on the side peripheral surface of the sliding portion 51.

  In the steering bracket 45 having such a configuration, the sliding portion 51 of the second bracket arm 47 slides in the cylindrical hole portion 49 of the first bracket arm 46, so that the second bracket arm 47 Since the protrusion amount from the first bracket arm 46 can be changed, the steering bracket 45 can be expanded and contracted, and the separation distance between the connecting portion 40 and the swivel shaft 18 can be changed.

  Therefore, when the steering angle of the steering device 12 of the marine vessel maneuvering section 13 is 0 degree and the turning angle of the outboard motor 15 is 0 degree, as shown by a virtual line in FIG. In the state where the bracket arm 47 is most contracted, the connecting pin 48 is disposed at the position of the minimum separation distance L 1 closest to the swivel shaft 18. At the time of turning, if the connecting pin 48 moves in the direction of the arrow A along the moving shaft 25, the connecting pin 48 can be separated from the swivel shaft 18, and in the state of turning to the maximum, the connecting pin 48 is the most. The position reaches the position of the separation distance L2 that is the maximum distance from the swivel shaft 18.

  Therefore, even in the ship 10 of the second embodiment provided with such a steering bracket 45, as in the first embodiment, a large load is applied to the outboard motor 15 by turning at a large turning angle. In this case, the turning load required to rotate the steering bracket 28 by the moving unit 26 can be suppressed, and the DD type motor can be downsized to reduce the size of the steering device 20.

  In the steering bracket 45, the sliding portion 51 of the second bracket arm 47 contacts the inner surface of the cylindrical hole portion 49 of the first bracket arm 46 and the shaft portion 52 is an opening of the cylindrical hole portion 49. Since the second bracket arm 47 is supported by the first bracket arm at two locations by contacting the portion 49a, the second bracket arm 47 is unlikely to fall over the first bracket arm 46. The steering operation can be performed with high accuracy.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic plan view of a boat equipped with a steering device according to Embodiment 1 of the present invention. It is a schematic plan view of the steering apparatus of the first embodiment. It is a top view which shows the principal part of the steering apparatus of the same Embodiment 1. It is a side view of the principal part of FIG. 3 of the steering apparatus of the first embodiment. It is a top view which shows the steering bracket of the steering apparatus of Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Ship 11 Hull 12 Steering device 15 Outboard motor 18 Swivel shaft 20 Steering device 25 Moving shaft 26 Moving unit 28, 45 Steering bracket 30, 40 Connecting portion 36 Connecting bracket 37 Fitting post 39 Slide fitting portion 46 1st Bracket arm 47 Second bracket arm 48 Connecting pin 49 Cylindrical hole 51 Sliding part

Claims (3)

A marine vessel propulsion device mounted so as to be steerable around a swivel shaft arranged in the vertical direction and a steerage device that steers the marine vessel propulsion device are provided, and the steerage device is movable in the hull width direction. And a steering bracket fixed to the marine vessel propulsion device and rotatable about the swivel shaft. The steering bracket and the moving member are connected at a connecting portion, and the moving member is connected to the hull. By being driven in the width direction, the steering bracket is rotated by receiving the steering load in the hull width direction with the connecting portion as a power point, and the ship propulsion device is steered.
The connecting portion includes a slide fitting portion provided on the steering bracket and a fitting body provided on the moving member and fitted to the slide fitting portion, and the fitting body is attached to the swivel shaft. In contrast, it is configured to move in the radial direction,
A boat characterized in that a separation distance from the connecting portion to the swivel shaft can be changed according to the rotation of the steering bracket. A marine vessel propulsion device mounted so as to be steerable around a swivel shaft arranged in the vertical direction and a steerage device that steers the marine vessel propulsion device are provided, and the steerage device is movable in the hull width direction. And a steering bracket fixed to the marine vessel propulsion device and rotatable about the swivel shaft. The steering bracket and the moving member are connected at a connecting portion, and the moving member is connected to the hull. By being driven in the width direction, the steering bracket is rotated by receiving the steering load in the hull width direction with the connecting portion as a power point, and the ship propulsion device is steered.
The steering bracket includes a first bracket arm that is fixed to the marine vessel propulsion device, and a second bracket arm that is rotatably connected to the moving member and is connected to the first bracket arm so as to extend and contract. With
A boat characterized in that a separation distance from the connecting portion to the swivel shaft can be changed according to the rotation of the steering bracket. One of the first and second bracket arms has a cylindrical hole that opens toward the other side, and the other of the first and second bracket arms is slidably received in the cylindrical hole. The ship according to claim 2 , further comprising a sliding portion .

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