JPH026258Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a marine vessel steering system. For more information, please refer to the Push-Pull Control Cable (hereinafter referred to as
A steering device for small ships, etc., which enables remote control of the steering gear by transmitting operating force through a control cable (simply referred to as a control cable), and which allows for easy centering adjustment, installation and disassembly work, etc. Regarding.

[Prior Art] Conventionally, steering devices for ships have been used that use a control cable as a means of transmitting operating force because they have excellent remote operability and are effective in saving space inside a ship.

The basic configuration of such a marine vessel steering system will be explained with reference to FIG.

In FIG. 7, 1 is a steering wheel attached to the cockpit of the ship, 2 is a control cable, 3 is a steering gear, and 4 is a rudder. Note that instead of the rudder, an outboard motor rotatably mounted on the hull may be used, as shown by the imaginary line in FIG. In this specification, the term "rudder" is a concept that also includes such an outboard motor. In the marine steering system shown in FIG. 7, when the steering wheel 1 is rotated, the inner cable of the control cable 2 is pushed and pulled, and the steering rod 5 of the steering gear 3 is moved in the directions of arrows a and b. The rudder 4 is operated via a steering link 6 connected to the steering link 6. Although not shown in FIG. 7, the starting end of the inner cable of the control cable 2 is connected to a rack and pinion mechanism 7 that is moved by the steering wheel 1, and the end thereof is connected to a guide pipe 8 provided in the steering gear 3. It is connected to the steering rod 5 inside.

In the conventional marine steering system, the end of the conduit of the control cable 2 is connected to the steering gear 3 by simply screwing into the end of the guide pipe 8 with a cap nut 9.

[Problems to be solved by the invention] However, the conventional marine vessel steering system described above has the following problems.

The control cable 2 and steering rod 5 are made in advance to a certain length and are assembled to the hull together with the steering wheel 1 and steering gear 3 during rigging. There is a problem that due to manufacturing errors, installation errors, etc., when the steering wheel 1 is placed in the straight-ahead position after assembly is completed, the rudder 4 is not always in the straight-ahead position and may shift to some extent.

Furthermore, if this problem is not resolved, even if you try to steer the boat in a straight line using the straight-ahead position of the steering wheel 1 (for example, the position where the spokes 1a are straight) as a guide, it will be difficult to do so, which will be inconvenient in terms of boat operation. arise.

For small vessels with limited space on board,
The rack and pinion mechanism 7 is sometimes installed at a slight angle to the ship's centerline.
This mounting angle will vary slightly depending on the size of the ship, but in that case, for example, if it is applied to a series of different types of ships, it is necessary to prepare many types of control cables 2 with different lengths. It is necessary to keep it. . However, preparing a large number of control cables 2 and the like in this way increases costs and is not desirable.

When a ship is sailing, it tends to turn slightly to the right or left due to the influence of the rotational torque of the screw. . This kind of "habit" differs slightly from ship to ship, but it is not possible to correct the reference position of the rudder to eliminate such "habits" with conventional steering devices, so the operator's steering There is a problem that can only be covered by technology.

In view of the above-mentioned circumstances, this invention allows for easy centering adjustment to bring the steering wheel and rudder to the straight-ahead position, is easy to apply to ships of different types, and improves the straight-ahead performance of the ship. “Habit” for
It is an object of the present invention to provide a marine vessel steering device which allows correction of the above and which is easy to assemble and disassemble.

Another object of the present invention is to provide a marine steering device that can be applied as is to a steering device with a conventional structure, has a simple structure, and can easily ensure waterproofness.

[Means for Solving the Problems] The marine steering system of the present invention has a push-pull system consisting of an inner cable that is pushed and pulled by the rotation of a steering wheel, and a conduit that slidably guides the inner cable. A marine vessel steering device having a control cable, and configured to move the rudder by connecting the inner cable to a steering link of a steering gear, wherein the inner cable is inserted and the sliding movement of the inner cable is guided. a guide pipe provided in the steering gear for the purpose of connecting the cable, a cable cap fixed to the conduit for screwing the conduit to the base of the guide pipe, and a cap nut fitted to the cable cap; A male threaded portion is carved on the outer periphery of the tip of the cap, and an adjustment nut having a C-shaped cross section that can be screwed in the axial direction on the male threaded portion is screwed into the male threaded portion. A cavity is formed in which the adjustment nut is accommodated, and the adjustment nut is brought into contact with the bottom end of the cavity so that the cap nut is screwed into the base.

[Function] In the marine steering system of the present invention, when screwing the control cable conduit to the base of the guide pipe with a cap nut, if the adjustment nut is deeply screwed into the external threaded part on the outer periphery of the tip of the cable cap, the conduit can be tightened. The tip of the cable cap is deeply inserted into the guide pipe, and the distance between the tip of the cable cap and the steering link connection point is shortened. Conversely, if you screw the adjustment nut into the external thread of the cable cap shallowly, the tip of the cable cap will be inserted shallowly into the guide pipe, and the distance between the tip of the cable cap and the steering link connection point will become longer. .

By changing the screwing position of the adjusting nut on the male thread of the cable cap in this manner, the distance between the tip of the cable cap and the steering link connection point can be adjusted within the range of the moving distance of the adjusting nut.

In addition, since the cross-sectional shape of the adjustment nut is C-shaped, when screwing the adjustment nut onto the outer periphery of the cable cap, it is necessary to insert the adjustment nut from the other part of the rod connected to the tip of the inner cable. It can be inserted from the side.

[Example] Next, an example of the present invention will be described with reference to the drawings.

Figures 1a and 1b are sectional views of essential parts of a marine steering system according to an embodiment of the present invention, showing the assembled state at different coupling positions, and Figure 1c shows the state before assembly in Figure 1a. The main part sectional views, Figures 2a and 2b, respectively show two steering machines with different center-to-center distances of the steering links.
3 is an explanatory diagram of the case where the embodiment shown in FIGS. , FIG. 5 is a plan view showing an embodiment of the steering device of the present invention, FIG. 6 is a plan view showing the state of the steering device shown in FIG. 5 before assembly, and FIG. 7 is a plan view of the steering device of the present invention. FIG. 8 is a sectional view of a main part showing another embodiment of the marine vessel steering system of the present invention.

The marine vessel steering system of this embodiment basically has the configuration shown in FIG. 7. That is, when the steering wheel 1 is rotated, the rotational motion is converted into linear motion by the rack and pinion mechanism 7, and the inner cable of the control cable 2 is pushed or pulled. A steering rod 5 is connected to the inner cable, so when the inner cable is pushed or pulled, the steering rod 5 is also moved in the directions of arrows a and b, and this movement is transmitted to the rudder 4 by the steering link 6. The rudder 4 is swung left and right in the figure. In this manner, in the marine vessel steering system of this embodiment, when the operator rotates the steering wheel 1, the rudder 4 is moved and the ship can be steered.

In the marine vessel steering system of this embodiment, the portion where the conduit of the control cable 2 is connected to the end of the guide pipe 8 has a unique configuration. Its structure will be explained based on FIG. 2a and FIG. 1c.

In FIG. 2a, 11 and 12 are the steering gear 3
A hollow cylindrical guide pipe 8 is inserted through the brackets 11 and 12, and the guide pipe 8 is fixed by being tightened from both ends with lockites 13 and 14. One end of the guide pipe 8 (the end on the left side in the figure) is formed longer than the dimension for screwing the lock nut 13 into it, and has a male thread 15 cut therein, thereby forming a base 16. A steering rod 5 is inserted through the other end of the guide pipe 8 (the end on the right side in the figure), and the steering rod 5 is guided by the guide pipe 8 and slides in the axial direction. The steering rod 5 is an elongated hollow cylindrical member, and the end inserted into the guide pipe 8 is open, and the end protruding from the guide pipe 8 has an eye end. 1
7 is connected. The steering rod 5 is connected by its eye end 17 to the steering link 6 with a nut 18.

The conduit 20 of the control cable 2 is connected to the base 16 of the guide pipe 8 by a cap nut 9, the details of which will be described later with reference to FIG. 1c. Cable cap 21 of the control cable 2
A fixed guide pipe 22 extends from the steering rod 5, and the fixed guide pipe 22 is slidably fitted in contact with the inner periphery of the steering rod 5. Further, its length is made somewhat shorter than the right end of the guide pipe 8 in the figure, so as to ensure the sliding stroke of the steering rod 5. The inner cable 23 of the control cable 2 is passed through the inside of the fixed guide pipe 22, and extends from the tip of the cable cap 21 by a length somewhat longer than the sliding stroke of the steering rod 5. The tip of this inner cable 23 is connected to a rod 24 by caulking or the like. The rod 24 and the inner cable 23 connected to the rod are slidably inserted into the fixed guide pipe 22, and the tip of the rod 24 is fixed to the end 25 of the steering rod 5 by caulking or other methods. ing. With the above configuration, when the inner cable 23 is pushed or pulled, the rod 24 is guided by the fixed guide pipe 22, slides the steering rod 5 in the axial direction, and the steering link 6 is moved. In addition, steering rod 5
is in sliding contact with the guide pipe 8 and the fixed guide pipe 22 from both the outer periphery and the inner periphery, so that it is guided so that buckling does not occur during the sliding operation, and the steering rod 5 is The moving rod 24 and the inner cable 23 coming out of the conduit 20 are also slid on the outer periphery of the fixed guide pipe 22, and are guided so that buckling does not occur during the sliding operation.
These guiding functions allow the steering rod 5 to operate smoothly.

Next, the cable cap 21 is connected based on Fig. 1c.
The surroundings will be explained in detail. As shown in the partially exploded figure, a male threaded portion 26 is formed on the outer periphery of the distal end of the cable cap 21, and an adjustment nut 27 is screwed into the male threaded portion 26. are combined. The width of the adjustment nut 27 is shorter than the length of the threaded part of the male threaded part 26, and when it is screwed in or unscrewed, the adjustment nut 27 can be screwed on the male thread 26 in the axial direction (directions of arrows c and d). ing. The external diameter of the male threaded portion 26 is slightly smaller than the inner diameter of the cap 16, and
It is designed to be inserted inside 6. Further, the adjusting nut 27 is shaped such that one end thereof comes into contact with the end surface of the base 16. The cap nut 9 has a female thread 28 cut on the inner periphery of the front part, a cavity 29 for accommodating the adjustment nut 27 on the inner periphery of the central part, and a cavity 29 for accommodating the adjustment nut 27 on the rear part. A bottom end is formed to abut against the end. The female thread 28 is fitted into the male thread 15 of the cap 16, and the cap nut 9 can be screwed into the cap 16.

When the cap nut 9 is screwed onto the cap 16 in this manner, one end of the adjusting nut 27 contacts the end surface of the cap 16, and the other end surface contacts the bottom end of the cap nut 9 and is tightened. When attaching the cable cap 21 of the control cable 2 to the guide pipe 8 in this way, if the adjusting nut 27 is shallowly screwed into the tip of the male threaded portion 26, the first
As shown in Figure a, the cable cap 21 can be fixed in a state where it is shallowly inserted into the base 16. . Furthermore, when the adjusting nut 27 is screwed deeply into the rear end of the male threaded portion 26, the cable cap 21 can be fixed in a state deeply inserted into the base 16, as shown in FIG. 1b.

Since the marine vessel steering system of this embodiment is used in an environment where seawater or the like is splashed, the following waterproofing measures are taken. Said cable cap 2
A concave groove 31 is formed circumferentially at the front end of 1, that is, the end where the male thread is not cut.
A sealing member such as an O-ring 32 is fitted into the groove 31. When the cable cap 21 is inserted into the base 16, the O-ring 32
As shown in FIG. 1b, it is in close contact with the inner circumferential surface of the base 16. As a result of sealing between the cable cap 21 and the base 16 with the O-ring 32 in this way, moisture is prevented from entering the control cable 2 and the steering rod 5.
Smooth operation of the steering gear 3 is maintained over a long period of time.

As shown in FIG. 1c, the fixed guide pipe 22 is joined to the inner periphery of the thin end portion of the cable cap 21 and is fixedly connected to the conduit 20. And the inner cable 23 connects to the cable cap 2.
1 and the fixed guide pipe 22.

Next, a method of attaching the adjusting nut 27 having a C-shaped cross section will be explained with reference to FIG. First, insert the cap nut 9 through the opening on the side opposite to the male threaded portion 28, and then attach the eye end 17, the steering rod 5, the fixed guide pipe 22, and the male threaded portion 26 of the cable cap 21.
and in that order, and also onto the cable cap 21. Next, make sure that the concave groove 31 of the cable cap 21 is not damaged by the screw of the adjustment nut 27.
Place the inner O-ring 32 on the fixed guide pipe 22,
Let it escape to a certain distance or more from the male threaded portion 26. A certain distance or more means a distance from at least one end of the fixed guide pipe 22 to the adjusting nut 2.
This means a distance greater than the width of 7.
Fit the adjustment nut 27 onto such a fixed guide pipe 22 from the side, and then tighten the adjustment nut 27.
is moved in the axial direction and screwed into the male threaded portion 26 of the cable cap 21. The adjusting nut 27 is set at the desired position, and the O-ring that was moved onto the fixed guide pipe 22 is then refitted into its original groove 31 on the cable cap 21. From this state, move the cap nut 9 so that the adjustment nut 27 fits into the cavity 29, and then tighten the cap nut 9.
The female screw portion formed on the inner peripheral surface of the end portion of the guide pipe 8 may be screwed onto the base 16 of the guide pipe 8. Here, the width P of the notch 27a of the adjusting nut 27 is set larger than the diameter of the fixed guide pipe. Incidentally, in order to further reduce the width of the notch of the adjustment nut 27, the upper and lower surfaces of the fixed guide pipe 22 may be made flat. The notch 27a is usually parallel to the axis of the adjustment nut 27 and preferably has two parallel surfaces, but it may be cut out in a V-shape, for example.

In addition, the adjustment nut 2 assembled as described above
7 and the cap nut 9 are to be disassembled by following the above procedure in reverse.

Next, the procedure for centering adjustment, etc. in the marine vessel steering system of the above embodiment will be explained.

First, we will explain the case where the control cable 3 of the same standard is used for the steering gear 3 of different standards.
To explain based on figures a to 2b, as shown in the figures, figure 2a shows a steering machine 3 in which the length L ₁ of the steering link 6 is short, and figure 2b shows a steering machine 3 in which the length L ₂ of the steering link 6 is long. 3 are both shown with their center lines concentric. If the center-to-center distances of the steering links 6 are different in this way, for the steering gear 3 with a short center-to-center distance _L1 , set the adjustment nut 27 to a shallow threaded position as shown in FIG. The depth of insertion of the cable cap 21 into the base 16 is made shallow, and for steering gears 3 with a long center-to-center distance _L2 , the adjustment nut 27 is set to a deep screwing position to reduce the insertion depth of the cable cap 21 into the base 16. deepen. Then the steering rod 5
Since the distance between the connection point 18 of the steering link 6 and the tip of the cable cap 21 is the same, the control cable 2 of the same standard and the rod 24 can be used to configure different types of marine steering systems. Can be done.

Furthermore, even in marine steering systems of the same model, the center-to-center distance when the rudder 4 is in the straight-ahead position will vary slightly due to manufacturing errors, installation errors, etc.; This can be accommodated by moving the adjusting nut 27 within the range of the threading distance l. As a result, rudder 4
With the steering wheel 1 in the straight-ahead position, centering adjustment can be easily performed to place the steering wheel 1 in a straight-ahead position (for example, with the spokes 1a facing directly below).

Further, the steering system of the present invention can also be applied to a ship in which two or more steering gears are operated by a single control cable. FIG. 5 shows two steering gears. Reference numerals 40 and 41 denote a left steering gear and a right steering gear, respectively, which are parallel to each other. The imaginary line shows the case where an outboard engine rotatably mounted to the hull is used.
A left rudder 42 and a right rudder 43 or an outboard engine are attached to the steering gears 40 and 41, respectively, so that they can be interlocked with each other by a link mechanism consisting of a left arm 44, a right arm 45, a connecting rod 46, and a bar 47. It is being done. On the other hand, steering gear 4
0 and 41 are provided with guide pipes 48 and 49, respectively, as shown in FIG.

In this device, the control cable 2 for steering is first passed through a guide pipe 48, then passed through a guide pipe 49, and is provided at the tip of the rod 24 connected to the inner cable 23 of the control cable 2. A configuration is adopted in which the eye end 17 is connected to one end of the bar 47 of the link mechanism. Therefore, the conduit 20 of the cable 2 is fixed to the left end side 50 of the guide pipe 49 of the right steering gear 41. To install the same mechanism as described above for adjusting the fixing position of the control cable at that location, as shown in FIG. A cap nut 9 is interposed in advance, and the control cable 2 is connected to the guide pipe 48, the cap nut 9, and the guide pipe 4.
9, then insert the adjustment nut 27 from the side as described above, and then tighten with the adjustment nut 27 interposed between the male threaded portion 26 of the cable cap 21 and the base 16 of the guide pipe 48. Bye.

In that case, it is conceivable to simply use an adjusting ring nut instead of the adjusting nut 27 having a C-shaped cross section in the dual steering system. However, when assembling, for example, the inner cable 23 and the rod 2
The adjusting ring nut can be passed through the control cable before caulking the rod 24 or the steering rod 5, but once it has been caulked, the adjusting ring nut cannot be removed. Therefore, the control cable 2
cannot be extracted, making disassembly work extremely difficult.

However, in the steering device of the present invention, an adjustment nut with a C-shaped cross section is used instead of the adjustment ring nut, so even in the case of a two-barrel type as shown in Fig. 5, the steering device can be easily assembled once it is assembled. It has the advantage of being able to be decomposed into

Next, another embodiment will be explained based on FIG.
In this embodiment, the adjustment nut 37 is made longer than the adjustment nut 27 of the previous embodiment, and the cap nut 39 is also longer to match the length of the adjustment nut 37. The male threaded portion 26 of the cable cap 21 may be lengthened or shortened to match the length of the adjustment nut 37. The male thread formed on the inner periphery of the adjustment nut 37 may be provided over the entire length of the adjustment nut 37, or may be provided partially at the rear end. By the male screw 38 provided at the rear end,
When screwed into the male threaded portion 26 of the cable cap 21, the front portion of the adjustment nut 37 may protrude beyond the tip of the cable cap 21. A long adjustment nut 37 like the one in this embodiment
If used as an optional part of the adjustment nut 27 of the above embodiment, centering adjustment etc. can be performed in a range exceeding the adjustment stroke of the above embodiment.

[Effects of the invention] The marine steering system of the present invention can be applied to different types of ships, allows easy centering adjustment of the control system from the steering wheel to the rudder, and improves the straightness of the ship. It is also possible to easily correct the ``habit'' caused by this. Furthermore, waterproofness can be ensured with the simple construction of attaching an O-ring to the tip of the cable cap, and it also has the advantage of being easy to assemble and disassemble the steering system, especially a two-barrel type steering system. .

[Brief explanation of drawings]

Figures 1a and 1b are sectional views of main parts of a marine steering system according to an embodiment of the present invention, showing assembled states at different coupling positions, and Figure 1c.
The figures are a cross-sectional view of the main parts of the marine steering system in Figure 1a before assembly, Figures 2a and 2b.
The figure is an explanatory diagram of the case where the embodiment shown in Figures 1a and 1b is applied to two steering machines with different center-to-center distances of steering links, and Figure 3 is an explanation of the adjustment nut installation work in the present invention. 4 is a perspective view showing one embodiment of the adjustment nut of the present invention, FIG. 5 is a plan view showing one embodiment of the steering device of the present invention, and FIG. 6 is a perspective view of the steering device shown in FIG. FIG. 7 is an explanatory diagram showing the basic configuration of the marine steering device of the present invention, and FIG. 8 is a sectional view of main parts showing another embodiment of the marine steering device of the present invention. . (Main symbols in the drawing), 1... Steering wheel, 2... Control cable, 3... Steering gear, 4... Rudder, 5... Steering rod, 8... Guide pipe, 21... Cable cap, 27... ...adjustment nut, 9...bag nut.

Claims (1)

[Claims for Utility Model Registration] A push-pull control cable consisting of an inner cable that is pushed and pulled by the rotation of a steering wheel and a conduit for slidingly guiding the inner cable; A marine steering device connected to a steering link of a steering gear to move a rudder, the guide pipe being provided on the steering gear for inserting the inner cable and guiding the sliding movement of the inner cable. , a cable cap fixed to the conduit and a cap nut fitted to the cable cap for screwing the conduit to the mouthpiece of the guide pipe, and a male threaded portion is carved on the outer periphery of the tip of the cable cap. An adjusting nut having a C-shaped cross section that can be screwed in the axial direction on the male threaded portion is screwed into the male threaded portion, and a cavity in which the adjusting nut is accommodated is formed inside the cap nut. A marine steering device comprising: an end face of the adjusting nut abutting the bottom end of the cavity, and the cap nut being screwed onto the mouthpiece.