JPS644205B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a locking structure for a rotary lever for remotely controlling a marine engine.

More specifically, the present invention relates to a locking structure for a rotary lever (hereinafter simply referred to as lever) for remote control of a marine engine using a push/pull control cable as a means of transmitting operating force.

``Prior art'' Conventionally, lock tightening structures for levers for remote control of marine engines have been proposed in Japanese Patent Application Laid-Open No. 55-132389 and
There are structures that can be seen in inventions and ideas such as No. 56-118419. That is, there is a structure in which the lever boss is moved in the axial direction by rotating the lever knob around the axis of the lever, creating friction between the lever boss and the casing and locking the rotation of the lever at a desired position. Also, unlike such structures, only the neutral lock is of the trigger type, such as in Utility Model Publication No. 57-9846, since the lock tightening mechanism cannot be incorporated into the lever, so a separate operation mechanism is required. Some devices are equipped with a device that provides frictional resistance.

``Problems to be Solved by the Invention'' A driven device on the marine engine side that is remotely controlled by a lever, such as a carburetor, is always urged in the return direction by a return spring. For this reason, even if the engine is remotely controlled by the lever, the biasing force of the return spring is always applied to the lever, so it is natural that the lever must be locked in order to sail at a constant and stable speed. It is necessary to lock the lever because it will return to normal and make stable navigation impossible. Especially in the case of a diesel engine, the return spring is mechanically much stronger than in a gasoline engine, and locking the lever is essential.

In the former locking structure devised for such a purpose as described above, the lever is rotated around its axis to lock the rotation of the lever. When locking or unlocking the lock, the lever must be rotated each time, and although the lever can be rotated easily, the operation is extremely troublesome, and at the same time, with these mechanisms, the lever must always be locked. There are design constraints that cannot be met. In addition, in the case of the lever mentioned above, where only the neutral lock is released by a trigger method, a lock tightening structure for locking rotation cannot be built into the lever, so a separate operation device is required to prevent friction. Therefore, some devices have a mechanism that applies operating resistance to prevent the lever from returning easily due to the biasing force of the return spring of the driven device, but since frictional resistance is always applied, the lever operation becomes difficult. It cannot be avoided.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a lock tightening structure that can easily, quickly and reliably lock the rotation of a lever in any position with a single touch.

"Means for Solving the Problems" The lever locking structure of the present invention has one end fitted into the driven member, a male screw carved in a region of the other end, and a male screw connected to the male screw. A shaft having a spline portion (the spline portion in this application is a wide definition that includes not only a general tooth shape but also a polygon or an ellipse), a lever boss fitted into the spline portion, and the lever boss. A lock nut is screwed into the male screw to press the lock nut, and one end engages with a lock member engaging portion provided on the lock nut to rotationally bias the lock nut in the tightening direction by the biasing force of a coil spring. It is characterized by comprising a mated lock member and an inner cable whose one end is engaged with a lock nut and whose other end is connected to a trigger provided on a lever knob.

"Operation" The lever lock tightening structure of the present invention is such that the lever is in a locked state under normal conditions, and when the lever is rotated in any direction, it is connected to the trigger by operating the trigger provided on the knob. As the inner cable is pulled, the lock nut with which the inner cable is engaged is rotated in the direction of loosening the screw, and the lever boss and casing, which were pressed by the lock nut, are unlocked, and the lever is freed. It is possible to rotate it.

``Example'' Next, the lever lock tightening structure of the present invention will be explained with reference to the drawings.

FIG. 1 is a partially cutaway side view of the main part showing the first embodiment of the lever lock tightening structure of the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 2
FIG. 2 is a partially cutaway side view of a main part showing an embodiment.

1 and 2, 1 is a casing, 2 is a driven member, and one end of a shaft 3 is fixed to the driven member 2 by a spline 4 so that the mounting angle can be selectively assembled. A male thread 5 is engraved in one area of the other end, and at the same time, the male thread 5 is
A spline portion 6 is provided in series with the spline portion 6 . A lever boss 8 is fitted into the spline portion 6 so as to be slidable in parallel to the axial direction, and the male threaded portion 5
A lock nut 11 is screwed into the. The lock nut 11 has a lock member engaging portion 11 provided near the outer periphery on the left side toward the shaft 3 in FIG.
One end of the lock member 12 is engaged with b, and a spring 13 is fitted to the other end, so that the spring 13 causes the lock member 12 to rotate the lock nut 11 in the tightening direction (direction C). It is energizing. Furthermore, one end 15 of the inner cable 14 is engaged near the lower end of the lock nut 11, and the other end 16 is connected to a trigger 10 provided on the knob 9. Furthermore, axis 3
An elastic member 17 (in this embodiment, a coil spring) is attached to a portion of the driven member 2 to which is fixedly fixed, and a lever boss 8 that is slidably fitted to the shaft and faces each other.
It is preferable that the two parts be inserted into each other and urged in mutually opposite directions.

With the above configuration, the lock nut 11 is normally rotated by the lock member 12 in the tightening direction (direction C), so the lever boss 8 and the driven member 2 mutually clamp the casing 1 via the shaft 3. Since the lever 7 is held in the same position, rotation of the lever 7 is locked.

To release the lock, pull up the trigger 10 provided on the knob 9 in the E direction.
is slid in the E direction, so that one end 15 of the inner cable is engaged with the lock nut and the lock nut 11
The lock nut 11 is wrapped around the outer periphery of the lock member 12 for a certain area.
The lever 7 is rotated in the D direction against the biasing force of the spring 13 attached to the lever 7, and the screw is loosened, and the lock between the lever boss 8 and the casing 1 held by the driven member 2 is released, and the lever 7 can freely rotate. do.

Next, when the lever 7 is rotated and stopped at an arbitrary position and the trigger 10 is released, the locking member 12 is released from the spring 1.
Since the lock nut 11 is rotated in the C direction by the biasing force 3, the screw carved in the lock nut is tightened and the shaft 3 is pulled in the A direction, so that the casing 1 is again moved by the lever boss 8 and the driven member 2. It is clamped and the lever lock is completed.

In the second embodiment shown in FIG. 3, which is different from the first embodiment shown in FIG. It is a multi-plate type using many casings, and several first plates whose rotation is prevented by casing 1
A braking plate 20 and several second braking plates 21 rotated by the shaft 3 are alternately combined,
As explained in the first embodiment, these brake plates rotate the lock nut by operating the trigger, and tighten or loosen the brake plates using the lever boss 8 and the driven member 2, so that the lever can be freely operated. This is an embodiment in which locking or unlocking can be performed at the position.

Furthermore, in the embodiment as described above, the lock nut 1
The position of the female thread 11a carved in the lock nut is not carved in the center of the lock nut, but is carved in an eccentric position so that the lock member engaging part 11b is at the farthest position (not shown). By making the lock tightening stronger depending on the ratio, locking can be performed even more accurately and quickly.

``Effects of the Invention'' The lever locking structure of the present invention allows the lever to be quickly and reliably locked at any position easily by one-touch operation of the trigger, and can be easily unlocked compared to the conventional lever locking structure. Although it has an extremely simple structure, it is an extremely effective invention that can produce excellent effects, and can overcome the drawbacks of the conventional technology as described above.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of the main part showing one embodiment of the lever lock tightening structure of the present invention, and FIG.
FIG. 3 is a partially cutaway front view of the lever lock tightening structure shown in FIG. 1: Casing, 2: Driven member, 3: Shaft, 4:
Spline, 5: Male thread, 6: Spline part,
7: Lever, 8: Lever Boss, 9: Knob, 10:
trigger, 11: lock nut, 11a: female thread, 11b: lock member engaging portion, 12: lock member, 13: spring, 14: inner cable.

Claims (1)

[Scope of Claims] 1. An operating device for remotely controlling a driven device via a control cable locked to a driven member by rotating a lever pivotally connected to the casing, and which is provided in the casing. The lever is activated by pressing a lever boss having a shaft hole having a tapered surface, a shaft pivotally supported in the shaft hole, and a lever boss fixed to the shaft and having a tapered locking surface that directly faces the taper surface of the shaft hole. In a rotary lever having a locking device capable of locking rotation, one end is fixed to the driven member by a spline so that the assembly angle can be selectively attached, and the other end is connected to a male thread carved in one area. a shaft provided with a spline portion, an operating lever having a lever boss carved with a spline that can be fitted into the spline portion of the shaft, and a lock nut screwed into a male thread carved on the shaft;
a lock member having one end engaged with a lock member engaging portion provided on the lock nut and for rotationally biasing the lock nut in a tightening direction by a coil spring assembled to the other end; A locking mechanism for a rotary lever comprising an inner cable which is engaged and whose other end is adjustably connected to a trigger provided in a knob part of the lever along the outer periphery for a certain area. Attached structure. 2. The rotary lever locking structure according to claim 1, wherein the rotary lever locking device is a multi-plate locking device. 3. A lock tightening structure for a rotary lever according to claims 1 and 2, characterized in that the female thread cut into the lock nut is eccentric with respect to the outer periphery of the lock nut.