JPH0227211Y2 - - 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. 6, 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, as shown by phantom lines in FIGS. 4 and 5, may be used. In this specification, the term "rudder" is a concept that also includes such an outboard motor. In the marine steering system shown in FIG. 6, 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.
The end thereof is connected to the steering rod 5 within a guide pipe 8 provided in the steering gear 3.

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 based on the straight-ahead position of the steering wheel 1 (for example, the position where the spokes 1a are straight), it will be difficult to do so. arise.

In small ships with limited space on board,
The rack and pinion mechanism 7 may be 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 manner is not preferable because it increases costs.

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" is slightly different for each ship, but such "habit"
Since conventional steering devices cannot correct the reference position of the rudder to eliminate this problem, there is a problem in that the only way to compensate for this is through the steering skills of the driver.

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 includes an inner cable that is pushed and pulled by rotation of a steering wheel, a cable end rod that is fixed to the tip of the inner cable, and a cable that slides the inner cable. The marine steering system has a push-pull control cable consisting of a conduit for movably guiding the inner cable, and the cable end rod is connected to a steering link of a steering gear to move the rudder, and a guide pipe, which has a male thread on its outer periphery and an inner circumferential surface that slides in contact with the outer circumferential surface of the cable end rod, which is provided on the steering gear in order to insert the cable end rod and guide its sliding motion. , a cable cap fixed to the conduit for screwing the conduit to the base of the guide pipe, and a female thread fitted around the cable cap so as to be movable in the axial direction and screwed into the male thread of the guide pipe. The cable cap has a cap nut having a cap nut, and a male screw portion is carved on the outer periphery of the tip of the cable cap, into which the female screw of the cap nut is screwed and which can be inserted into the guide pipe. A coil spring that can be screwed in the axial direction and inserted over the rod is screwed into the cap nut, and a cavity in which the coil spring is accommodated is formed inside the cap nut. A structure is adopted in which both end surfaces of the coil spring are brought into contact with the bottom end of the coil spring and the end surface of the cap, respectively, and the cap nut is screwed into the male thread of the cap.

[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 coil spring is deeply screwed into the male thread 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 coil spring on the male thread of the cable cap in this way, 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 coil spring.

Also, since the coil spring can expand radially outward, when screwing the coil spring onto the outer periphery of the cable cap, it is easy to insert the coil spring from the free end of the rod connected to the tip of the inner cable. Can be done.

[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.
FIG. 3 is an explanatory diagram of the coil spring installation work of the present invention, and FIG. 4 is a plan view showing an embodiment of the steering device of the present invention. , Figure 5 is the fourth
FIG. 6 is an explanatory diagram showing the basic configuration of the marine steering device of the present invention, and FIG. 7 is a plan view showing the state of the steering device shown in the figure before assembly. FIG. 7 shows another embodiment of the marine steering device of the present invention. It is a sectional view of the main part.

The marine vessel steering system of this embodiment basically has the configuration shown in FIG. That is, when the steering wheel 1 is rotated, the rotational movement is converted into a linear movement 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 lock nuts 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 therethrough, 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 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 fitted 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. The steering rod 5 and the rod 24 together constitute a cable end rod as defined in the claims of the utility model registration. 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. Since the steering rod 5 is in sliding contact with the guide pipe 8 and the fixed guide pipe 22 from both the outer circumference and the inner circumference, it is guided so that buckling does not occur during the sliding operation, and the above-mentioned The rod 24 for moving the steering rod 5 and the inner cable 23 coming out of the conduit 20 also have their outer peripheries slid into contact with the fixed guide pipe 22, and are guided so that buckling does not occur during the sliding operation. The guidance function of the steering rod 5
is now operating 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 thread is cut on the outer periphery of the tip of the cable cap 21 to form a male threaded portion 26, and a coil spring 27 is screwed into the male threaded portion 26. are combined. The width of the coil spring 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 coil spring 27 becomes able to spiral on the male thread 26 in the axial direction (in the direction of arrows c and d). ing. The male threaded portion 26 has an outer diameter slightly smaller than the inner diameter of the cap 16 and is adapted to be inserted into the interior of the cap 16. Further, the coil spring 27 has a shape such that one end thereof is brought into contact with the end surface of the base 16. The cap nut 9 has a female thread 28 on the inner periphery of the front part.
A cavity 29 for accommodating the coil spring 27 is formed on the inner periphery of the central portion, and a bottom end is formed on the rear portion so as to come into contact with the other end of the coil spring 27. has been done.
The male 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 coil spring 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, when the coil spring 27 is shallowly screwed into the tip of the male threaded portion 26, the cable cap 21 is attached as shown in FIG. 1a. It can be fixed in a state where it is inserted shallowly into the base 16. In addition, when the coil spring 27 is deeply screwed into the rear end of the male threaded portion 26, the cable cap 2
1 can be fixed in a state deeply inserted into the base 16.

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 groove 31 is formed in a circumferential manner at the front end of the connector 1, that is, the end where the male thread is not cut, and 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, this O-ring 32
As shown in Figure b, 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, moisture is prevented from entering the control cable 2 and the steering rod 5, and the smooth operation of the steering gear 3 is maintained over a long period of time. maintained.

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 for attaching the coil spring 27 will be explained with reference to FIG. First, bag nut 9
The eye end 17, the steering rod 5, and the fixed guide pipe 22 are inserted from the opening on the side opposite to the female threaded part 28.
and the male threaded portion 26 of the cable cap 21 in that order and brought onto the cable cap 21. Next, the coil spring 27 is inserted from the eye end 17 in the same manner, and the fixed guide pipe 2 is inserted.
2 and the male threaded part 26 of the cable cap 21
It also comes to the area adjacent to . Then, one end of the coil spring 27 is screwed into one end of the male threaded portion 26 of the cable cap 21, and then the coil spring 27 is screwed onto the male threaded portion 26 to a desired position. From this state, move the cap nut 9 so that the coil spring 27 is accommodated in its cavity 29, and screw the male thread formed on the inner peripheral surface of the end of the cap nut 9 into the base 16 of the guide pipe 8. Bye. At this time, if the vicinity of the bottom end of the cavity 29 facing the male thread 26 is formed into a tapered shape, the coil spring 27 will be pressed against the male thread part 26 of the cable cap 21, so the coil spring 27 will be firmly fixed. be able to.

Further, in order to thread the coil spring 27 into the male threaded portion 26 of the cable cap 21 without any force, the coil spring 27 has the same pitch as the male threaded portion 26.

The cross-sectional shape of the wire of the coil spring 27 is not limited to a circle, but may substantially correspond to the shape of the thread groove of the male thread 26 at least on the inner surface facing the male threaded portion 26 of the cable cap 21. In that case, it is not necessary that they match perfectly; for example, the wire cross section may be circular, elliptical, or diamond-shaped.

When the coil spring 27 is used as a component for adjusting the rudder angle in this way, the outer diameter of the eye end 17, the steering rod 5, etc. is larger than the root diameter of the male threaded portion 26 of the cable end 21, so that the coil spring 27 Even if the coil spring is larger than the inner diameter of the eye end 17, it can be inserted from the eye end 17 by extending the coil spring radially outward. Therefore, even after the steering device is assembled by, for example, caulking and connecting the inner cable 23 and the rod 24, and caulking and connecting the rod 24 and the steering rod 5, the coil spring 27 will be removed as described later. Since the cap nut 9 can be removed from the end of the steering rod 5, there is an advantage that disassembling the steering device is easy.

Further, in order to disassemble the coil spring 27 and cap nut 9 assembled as described above, the procedure is reversed to that described above.

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. When the center-to-center distances of the steering links 6 are different in this way, the coil springs ₂₇ are placed in shallow engagement positions as shown in FIG. cap 2
The depth of insertion into the base 16 of 1 is shallower, and the distance between centers is reduced.
For steering gear 3 with a long length L ₂ , set the coil spring 27 to a deep screw position and attach the cable cap 2.
1 into the base 16 is deepened. By doing so, the distance between the connecting point 18 of the steering rod 5 and steering link 6 and the tip of the cable cap 24 will be the same, so you can use the control cable 2 and rod 24 of the same standard to connect different types of ships. A steering device can be configured.

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 absorbed by moving the coil spring 27 within the range of the spiral distance l. As a result, with the rudder 4 in the straight-ahead position, the steering wheel 1 is placed in a straight-ahead position (for example, the spoke 1
The centering adjustment is easily performed so that the position a is directed directly downward.

Furthermore, the steering gear groove of the present invention can also be applied to ships in which two or more steering gears are operated by a single control cable. FIG. 4 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, the steering gear 4
0 and 41 have guide pipes 48 and 49, respectively, as shown in FIG.

In this device, the control cable 2 for steering first passes through a guide pipe 48, then passes through a guide pipe 49, and connects to an eye 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 one end of a bar 47 of a link mechanism is connected to the end 17. 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 a mechanism similar to that described above for adjusting the fixing position of the control cable at that location, as shown in FIG. A cap nut 9 and a coil spring 27 are interposed in advance, and the control cable 2 is connected to the guide pipe 48, the cap nut 9, the coil spring 27, and the guide pipe 4.
9 and tighten the male threaded portion 26 of the cable cap 21 and the base 16 of the guide pipe 48 with the coil spring 27 interposed therebetween.

In that case, it would be conceivable to simply use an adjusting ring nut instead of the coil spring 27 in the dual steering system. However, when assembling, for example, the inner cable 23 and rod 24
The adjusting ring nut can be passed through the control cable in advance before caulking or before caulking the rod 24 and the steering rod 5, but once it has been caulked, the adjusting ring nut cannot be removed. Therefore, 2
The control cable 2 cannot be extracted from the linked steering gear, making disassembly work extremely difficult.

However, since the steering device of the present invention uses a coil spring instead of the adjusting ring nut, the steering device can be easily disassembled once assembled even in the case of a two-barrel type as shown in Fig. 4. It has the advantage of being able to

Next, another embodiment will be described based on FIG.
In this embodiment, the coil spring 37 is made longer than the coil spring 27 of the previous embodiment, and the cap nut 39 is also longer to match the length of the coil spring 37. The male threaded portion 26 of the cable cap 21 is connected to a coil spring 37.
It may be long or short depending on the length of. When the female thread formed on the inner periphery of the coil spring 37 is screwed into the male thread 26 of the cable cap 21, the front part of the coil spring 37 may protrude beyond the tip of the cable cap 21. If the long coil spring 37 of this embodiment is used as an optional component for the coil spring 27 of the previous embodiment, centering adjustment etc. can be performed in a range exceeding the adjustment stroke of the previous 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 the drawing]

FIGS. 1a and 1b are a cross-sectional view of main parts of a marine steering system according to an embodiment of the present invention, showing an assembled state at an easy connection position, and FIG.
Figure c is a cross-sectional view of the main parts of the marine steering system in Figure 1a before assembly, Figure 2a and Figure 2.
Figure b shows different distances between the centers of the steering links2.
3 is an explanatory diagram of the installation work of the coil spring 27 of the present invention, and FIG. 4 is an explanatory diagram of the case where the embodiment shown in FIGS. 5 is a plan view showing the state of the steering device shown in FIG. 4 before assembly; FIG. 6 is an explanatory diagram showing the basic configuration of the marine steering device of the present invention; FIG. FIG. 7 is a sectional view of main parts showing another embodiment of the marine vessel steering system 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: Coil spring,
9: Fukuro Natsuto.

Claims (1)

[Claims for Utility Model Registration] 1. An inner cable that is pushed and pulled by the rotation of a steering wheel, a cable end rod that is fixed to the tip of the inner cable, and a conduit that slidably guides the inner cable. A marine steering system having a push-pull control cable consisting of a cable end rod connected to a steering link of a steering gear to move the rudder, wherein the inner cable and the cable end rod are inserted and A guide pipe provided on the steering device to guide the sliding motion of the cable end rod, the guide pipe having a male thread on the outer periphery and an inner circumferential surface slidingly contacting the outer circumferential surface of the cable end rod, and the base of the guide pipe. A cable cap is fixed to the conduit for screwing the conduit to the guide pipe, and a cap nut is fitted around the cable cap so as to be movable in the axial direction, and has a female thread that engages with the male thread of the guide pipe. A male threaded portion is carved on the outer periphery of the tip of the cable cap, into which the female thread of the cap nut is screwed and which can be inserted into the guide pipe, and the male threaded portion is axially screwed onto the female threaded portion. A coil spring that can be advanced and inserted over the cable end rod is screwed into the cap nut, and a cavity in which the coil spring is accommodated is formed inside the cap nut, and a bottom end of the cavity is formed. and a marine steering device, wherein both end surfaces of the coil spring are brought into contact with the end surfaces of the mouthpiece, and the cap nut is screwed into the male thread of the mouthpiece. 2. Utility model registration claim 1, wherein the cavity is cylindrical, and at least near its bottom end is formed in a tapered shape that becomes narrower toward the bottom end.
Apparatus described in section.