JPH06144375A - Steering handle for outboard engine - Google Patents

Abstract

PURPOSE:To easily mount a steering handle to an outboard engine main unit without changing a constitution of an engine control system by providing a throttle operation restricting mechanism for restricting action of a throttle operating part at neutral time and reverse shift time. CONSTITUTION:By bringing a neutral opening restricting screw 44 and a reverse opening restricting screw 45 of a control drum 40 into contact with a stopper surface 41A of a stopper 41, rotation of a throttle valve 22 is restricted, and a delivery amount to a side of the control drum 40 can be fine adjusted by these neutral opening restricting screw 44 and reverse opening restricting screw 45. As a result, a steering handle 20 can be mounted on various engines of different restriction of a throttle valve opening at neutral or reverse shift time. Since the control drum 40 and the stopper 41 are housed in the inside of a handle housing 21, no part is delivered into the handle housing 21, to prevent interference with shift operation, and also appearance is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outboard motor steering wheel, and more particularly to an outboard motor steering wheel for controlling the opening of a throttle valve during neutral or reverse shift.

[0002]

2. Description of the Related Art The forward / reverse / neutral shift switching of an outboard motor is performed by sliding a clutch dog in a lower case of the outboard motor to normally rotate the drive shaft. It is implemented with or without transmission to the propeller shaft via a gear or a reverse gear.

If the throttle valve opening is excessively large when shifting from neutral to forward or reverse in such shift switching control, the hull may suddenly start or the clutch dog or gear may be damaged. There is. Further, if the throttle valve is fully opened during reverse shift, the hull may become unstable.

Therefore, in the conventional medium- and large-sized outboard motors with remote control specifications, inside the remote controller,
A throttle valve opening regulation device that regulates the opening of the throttle valve during neutral and reverse shift is incorporated to avoid the above inconvenience. Further, in a small outboard motor with a steering wheel specification, as in the invention of Japanese Patent Application No. 3-42473, the engine in the main body of the outboard motor is equipped with the above throttle valve opening regulating device.

[0005]

In recent years, there is a desire to steer a medium-sized or large-sized outboard motor with a steering wheel. However, as described above, most of the middle- and large-sized outboard motors are of remote control specifications, and most of them are not equipped with the throttle valve opening regulation device in the outboard motor body. Therefore, in order to mount a steering handle on such a medium-sized or large-sized outboard motor, the engine control system must be significantly changed in order to provide a throttle valve opening control device inside the outboard motor body.

The present invention has been made in view of the above circumstances, and the structure of the engine control system is changed even when the engine in the outboard motor body is not equipped with a throttle valve opening control device. It is an object of the present invention to provide a steering handle for an outboard motor that allows the steering handle to be easily attached to the outboard motor body without doing so.

[0007]

The present invention relates to a steering handle of an outboard motor, which is installed in an outboard motor body of an outboard motor and enables the outboard motor body to be steered. Installed in the outboard motor body to adjust the opening of the throttle valve, and to the handle body, and is connected to the shift operation part to operate the shift mechanism in the outboard motor body. And a throttle operation restricting mechanism for restricting the operation of the throttle operation section during neutral and reverse shift.

[0008]

If the engine of the outboard motor is not equipped with a throttle valve opening control device that controls the opening of the throttle valve at the time of neutral shift or reverse shift, the above-mentioned throttle valve is attached when the steering wheel is attached. The structure of the engine control system must be changed in order to install the opening control device.

However, according to the steering wheel of the present invention, since the throttle operation restricting mechanism for restricting the operation of the throttle operating portion is installed in the steering wheel, the throttle valve opening restricting device is provided in the engine of the outboard motor body. Even if the vehicle is not equipped with, the throttle operation restricting mechanism can restrict the opening of the throttle valve during the neutral shift or the reverse shift. As a result, even when the engine in the outboard motor body is not equipped with the throttle valve opening degree regulation device, the steering handle can be easily attached without changing the structure of the engine control system.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 (A) is a side view showing a part of a steering handle of an outboard motor according to the present invention with a part cut away. FIGS. 3 and 4 show the steering handle of FIG. 1 (A). It is the whole side view and top view showing the outboard motor applied, respectively.

As shown in FIGS. 3 and 4, the outboard motor 11
Includes a propulsion unit 13 including a propeller 12, an engine 14 installed on the propulsion unit 13, a swivel bracket 15 and a clamp bracket 16. The engine 14 is covered with a cowling 17, and the engine 14, the cowling 17 and the propulsion unit 13 constitute the outboard motor main body 11A.

The propulsion unit 13 is supported by a swivel bracket 15 so as to be horizontally steerable. The swivel bracket 15 has a clamp bracket 16 and a tilt shaft 1.
It is pivotally supported via 8 so as to be tiltable in the vertical direction. Outboard motor 1
1 is configured to be attachable to the hull 19 by the clamp bracket 16, transmits the output of the engine 14 to the propeller 12, and allows the hull 19 to travel.

A steering handle 20 is attached to the propulsion unit 13.
Is mounted and the propulsion unit 13 is steered in the horizontal direction. The steering handle 20 includes a fixed handle portion 20A fixed to the propulsion unit 13 and a movable handle portion 20B pivotally supported by the fixed handle portion 20A so as to be vertically foldable with respect to the fixed handle portion 20A.

In the movable handle portion 20B, as shown in FIGS. 1A and 2, a throttle grip 22 is arranged at the tip of a handle housing 21 as a handle body, and the throttle shaft 2 is provided in the handle housing 21.
3 are accommodated. The throttle grip 22 and the throttle shaft 23 form a throttle operation unit. The throttle shaft 23 is used for the steering wheel 2.
The handle housing 2 along the handle shaft center 20a of 0
1, and a throttle grip 22 is connected to the tip of the throttle grip 22. The drive pinion 24 is fixed to the base end of the throttle shaft 23.

In the handle housing 21, a driven shaft 25 is arranged with its driven axis 25a being orthogonal to the handle axis 20a within a horizontal plane including the handle axis 20a. The driven gear 2 that meshes with the drive pinion 24 is attached to one end of the driven shaft 25.
6 is fixed using pins 27. The drive pinion 24 and the driven gear 26 are bevel gears, and the rotational movement of the drive pinion 24 around the handle shaft center 20a is converted into the rotational movement around the driven shaft center 25a.

A swing lever 28 is fixed to the other end of the driven shaft 25. This swing lever 28 is shown in FIG.
As shown in (A), it has an axial length larger than the outer diameter of the driven gear 26, and the throttle cable 29 is connected to the tip portion. As described above, since the shaft length of the swing lever 28 is set to be large, the throttle cable 29 is rotated by the rotation of the swing lever 28 based on the rotation of the driven gear 26.
The stroke of can be set large.

The drive pinion 24, the driven shaft 25, the driven gear 26, and the swing lever 28 together with the throttle shaft 23 are arranged in the handle housing 2.
1 and a part of the throttle cable 29 is also housed in the handle housing 21. Further, the grip shaft center 22a of the throttle grip 22 is the steering wheel 2
It is set coaxially with the handle shaft center 20a of 0 and is set toward the cable outlet 30 in the outboard motor body 11A.

Therefore, the rotational movement of the throttle valve 22 around the handle shaft center 20a is changed by the throttle shaft 23.
Direction is changed by the drive pinion 24 and the driven gear 26 via the, and the stroke is increased by the swing lever 28 to be converted into the push-pull movement of the throttle cable 29. Adjusted.

The handle housing 21 is shown in FIG.
The shift lever 31 is pivotally supported as shown in FIG. As shown in FIGS. 1B and 2, the shift lever 31 is configured to be swingable about a lever shaft center 31a orthogonal to the handle shaft center 20a in a horizontal plane including the handle shaft center 20a. . An inner lever 32 is fixed to the shift lever 31.
Is the shift lever 3 in the handle housing 21.
1 extends in the extending direction of the shift cable 33
Is pivotally supported. The shift cable 33, together with the throttle cable 29, extends in the handle housing 21 toward the outboard motor body 11A, is connected to the shift rod 34 (FIG. 3) of the shift mechanism, and operates the shift rod 34. Therefore, the shift lever 31, the inner lever 32, and the shift cable 33 function as a shift operation unit.

As shown in FIG. 3, the shift mechanism includes the shift rod 34, a shift shaft 35 connected to the shift rod 34, a slide shaft connected to the shift shaft 35 and slidable on a propeller shaft 36. The clutch dog 37, the forward rotation gear 39A and the captain gear 39B, which are rotatably fitted to the propeller shaft 36 and are constantly meshed with the drive shaft 38 driven by the engine 14, are configured. By setting the shift lever 31 of the shift operating portion to the F (forward) position, the R (reverse) position or the N (neutral) position of FIG. 1A, the clutch dog 37 of the shift mechanism can rotate the forward rotation gear 39A or the forward rotation gear 39A. The reverse rotation gear 39B meshes with or disengages from each other, which causes the propeller 12 to rotate normally, reversely, or stop rotating, and the hull 19 advances, reverses, or stops.

As shown in FIGS. 1A and 1B and FIG. 2, a control drum 40 is fixed to the throttle shaft 23, and a stopper 41 is integrally formed on the inner lever 32. These control drum 40 and stopper 41
Functions as a throttle operation unit. The stopper 41
1 extends from the inner lever 32 to the upper side of the throttle shaft 23 in FIG. 1B, further extends to the upper side of the control drum 40, and a stopper surface 41A is formed facing the control drum 40. On the other hand, the control drum 40 is
A tongue piece 42 and a tongue piece 43 are provided at positions at different angles from the drum center, and a neutral opening degree regulating screw 44 and a reverse opening degree regulating screw 45 are screwed to the tongue pieces 42 and 43, respectively.

Next, the operation will be described. When the shift lever 31 is shifted and set to the N (neutral) position in FIG. 1A, the stopper 41 is also in the n (neutral) position, and when the throttle grip 22 is rotated at this time,
The control drum 40 also rotates via the throttle shaft 23, but the neutral opening regulating screw 44 is attached to the stopper 4
The rotation of the throttle grip 22 is restricted by coming into contact with the first stopper surface 41A. As a result, the opening of the throttle valve at the time of neutral shift can be set to a small value, and the idling of the engine 14 can be prevented.

In addition, the shift lever 31 is the R of FIG.
When the shift setting is set to the (reverse) position, the stopper 41 is also in the r (reverse) position, and when the throttle grip 22 is rotated at this time, the control drum 40 is also rotated via the throttle shaft 23. When the screw 45 comes into contact with the stopper surface 41A, further rotation is restricted. As a result, the throttle valve opening at the time of reverse shift can be regulated to a certain value or less.

Further, the shift lever 31 is the F of FIG.
When in the (forward) position, the stopper 41 also f
It is in the (forward) position. When the stopper 41 is in this position, the control drum 40 can rotate without being restricted by the stopper 41, so that the rotation of the throttle grip 22 is not restricted and the throttle valve can be set to a desired opening degree.

As described above, the control drum 40 and the stopper 41 housed in the handle housing 21 of the steering handle 20 can restrict the rotation of the throttle grip 22 during the neutral shift or during the shift, so that the outboard motor body 11A can be controlled. Even if the engine 14 is not equipped with a throttle valve opening degree control device that controls the opening degree of the throttle valve during neutral shift or reverse shift, the opening degree of the throttle valve can be regulated by the control drum 40 and the stopper 41. . As a result, even in the outboard motor body 11A in which the engine 14 is not equipped with the throttle valve opening degree regulation device, the steering handle 20 can be easily attached without changing the control system of the engine.

Further, when the throttle valve is opened during the forward shift or the reverse shift, even if the shift lever 31 is returned to the neutral position,
Since the stopper 41 hits the side surface 46 or 47 of the control drum 40, the shift to neutral cannot be performed. In order to shift to the neutral position, the rotation angle of the throttle grip 22 must be below the regulation value at the neutral position. Therefore, the throttle valve is not shifted to the neutral state with the throttle valve opened to the predetermined value or more, and thus the engine 14 can be prevented from idling.

Furthermore, the rotation of the throttle valve 22 is restricted by the neutral opening restricting screw 44 and the reverse opening restricting screw 45 of the control drum 40 coming into contact with the stopper surface 41A of the stopper 41. Screw 44 and reverse opening regulation screw 45
However, since the discharge amount to the control drum 40 side can be finely adjusted, the steering handle 20 can be attached to various engines having different throttle valve opening regulation at the time of neutral or reverse shift.

Further, since the control drum 40 and the stopper 41 are housed inside the handle housing 21, there are no parts to be discharged into the handle housing 21, so that the shift operation is not hindered and the appearance is good. Further, since the shift drum 40 and the stopper 41 have a simple structure and the number of parts is small, the cost can be reduced.

FIG. 5 (A) is a partially cutaway plan view showing another embodiment of the steering handle of the outboard motor according to the present invention. In the other embodiments, the same parts as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the other embodiment, a shift lever 50 as a shift operating portion is swingably supported by a fixed handle portion 20A of a steering handle, and a shift rod 34 of a shift mechanism is connected to the shift lever 50. It Further, the pulley 51 is fixed to the base end portion of the throttle shaft 23 housed in the movable handle portion 20B of the steering handle,
The throttle cable 29 is locked to the pulley 51. A drive-side control pulley 52 is rotatably provided on the fixed handle portion 20A in synchronization with the swing of the shift lever 50. On the other hand, a driven side control pulley 53 is rotatably supported by the movable handle portion 20B. The drive side control pulley 52 and the driven side control pulley 53 are operatively connected by a control cable 54.
Therefore, the driven side control pulley 53 is
It is provided so as to rotate via the drive side control pulley 52 in synchronization with the swing of 0.

The driven-side control pulley 53 is shown in FIG.
As shown in (B), the stopper member 55 is fixed,
The stopper member 55 is provided with a reverse opening restriction stopper surface 57 and a neutral opening restriction stopper surface 56. The neutral opening regulating stopper surface 56 is configured as a tip surface of the adjusting screw 58 screwed on the stopper member 55. A control drum 59 is installed on the throttle shaft 23 at a position facing the stopper member 55.

This control drum 59 has a shift lever 50.
5A is shifted to the N (neutral) position in FIG. 5A, it contacts the neutral opening regulating stopper surface 56 as shown in FIG. 5B to regulate the rotation of the throttle grip 22. Further, the control drum 59 is the shift lever 5
When 0 is shifted to the R (reverse) position in FIG. 5A, the reverse opening restriction stopper surface 5 in FIG. 5B is set.
The throttle grip 22 is allowed to rotate until it comes into contact with 7, and the rotation is restricted after the contact.

Note that the shift lever 50 is F in FIG.
When the shift setting is set to the (forward) position, the control drum 59 does not come into contact with the stopper member 55 and the rotation of the throttle grip 22 is not restricted, so the opening of the throttle valve is not restricted and can be set to a desired value. .

As described above, also in the other embodiments described above,
The stopper member 25 and the control drum 59 installed in the handle housing 21 of the steering wheel regulate the rotation of the throttle grip 22 during the neutral shift or the reverse shift, and thus the throttle valve 2
Since the opening degree of 2 is regulated, even in the outboard motor body containing the engine which is not equipped with the throttle valve opening degree regulation device, the steering handle can be easily attached without changing the control system of the engine. it can. Other,
The same effect as that of the above-described embodiment is obtained.

[0035]

As described above, according to the steering wheel of the outboard motor of the present invention, even if the throttle valve opening regulating device is not installed in the engine inside the outboard motor body, the engine control can be performed. The steering handle can be easily attached to the outboard motor body without changing the system configuration.

[Brief description of drawings]

FIG. 1 (A) is a side view showing an embodiment of a steering handle of an outboard motor according to the present invention with a part cut away.
1B is a sectional view taken along the line IB-IB in FIG.

FIG. 2 is a view on arrow II in FIG.

FIG. 3 is an overall side view showing an outboard motor to which the steering handle of FIG. 1 (A) is applied.

FIG. 4 is a plan view of the outboard motor of FIG.

FIG. 5A is a plan view showing another embodiment of a steering handle of an outboard motor according to the present invention with a part thereof broken away;
5B is a sectional view taken along the line VB-VB in FIG.

[Explanation of symbols]

 11 Outboard Motor 11A Outboard Motor Main Body 20 Steering Handle 21 Handle Housing 22 Throttle Grip 23 Throttle Shaft 29 Throttle Cable 31 Shift Lever 33 Shift Cable 34 Shift Rod 40 Control Drum 41 Stopper 44 Neutral Opening Restriction Screw 45 Reverse Opening Restriction Screw

Claims (1)

[Claims] 1. A steering handle of an outboard motor, which is installed in an outboard motor body of an outboard motor and enables the outboard motor body to be steered, the steering handle being installed in the steering wheel handle body,
The throttle operation part for adjusting the opening degree of the throttle valve in the outboard motor body and the shift operation part installed in the handle body and operating the shift mechanism in the outboard motor body are connected during neutral and reverse shift. A steering handle for an outboard motor, comprising: a throttle operation restricting mechanism that restricts the operation of the throttle operation section.