JPH066209Y2 - Operation lever locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improvement of a lock device for an operation lever for remotely controlling a marine engine or the like that is rotated and used. More specifically, it relates to improvement of a multi-plate locking device for an operating lever.

[Prior Art] Conventionally, an operation lever for remotely operating a marine engine or the like is naturally returned during navigation due to the vibration of the hull being added to the biasing force of a return spring such as a carburetor on the engine side. To prevent this, a lock device is adopted for the operation lever, and various inventions and inventions have been made on the lock device. For example, an invention such as Japanese Patent Publication No. 59-2445 has been made as this type of invention. That is, in the present invention, the operation lever is rotated to control the marine engine, stop the rotation at an arbitrary position where the desired rotation of the engine is obtained, and rotate the knob there to brake. It has a structure that locks the plate so that the operation lever does not rotate by tightening the plate.

Generally, it is desired that the operation of locking the operation lever as described above at an arbitrary rotational position is as simple as possible and surely performed.

[Problems to be Solved by the Invention] In the conventional locking device for the operation lever as described above, the operation lever is operated and rotated to operate the lock device by rotating the lever knob at an arbitrary rotation position. It is a structure that locks.

In the operation lever having the lock device having such a structure, when locking the operation lever at an arbitrary rotational position, the lock operation must be performed by rotating the knob and tightening the knob. Therefore, the operation is extremely troublesome. In addition, for example, when used for remote control of a marine engine, when an emergency occurs during constant speed navigation of a boat and it is necessary to operate the operating lever in a hurry, rotate the knob to unlock. Is relatively troublesome, and if the knob is tightened too much by mistake, the rotation operation to loosen and return the knob will be delayed for a moment, and in the worst case there is a risk of causing a collision accident. In some cases.

[Means for Solving the Problems] A locking device for an operating lever according to the present invention comprises a casing, a spline hole formed in the casing and having at least one spline engraved therein, and the cylindrical spline. A spline that can fit in the hole is engraved on the outer periphery, a braking collar is formed on one end, and a male screw is engraved on a region of the outer periphery on the other end, and the inner diameter is a shaft hole and is parallel to the shaft center. Direction slidable sleeve, a shaft pivotally supported in a shaft hole of the sleeve, a driven member connected to one end of the shaft and having a brake plate locking hole, and fixed to the other end of the shaft. Operating lever, a plurality of annular movable braking plates that rotate together with the driven member in the braking plate locking holes, and a plurality of annular members that are fitted to the outer peripheral surface of the sleeve while preventing rotation. Fixed brake plates are alternately stacked, and the side They are stored in contact with each other, an elastic member is mounted between the driven member and the braking plate, and a female screw into which the male screw of the sleeve is screwed is engraved, and the outer peripheral surface thereof is the operation lever. And a braking ring that is slidably and co-rotatably engaged with the male screw and the female screw. The screwing direction of the male screw and the female screw is such that when the operating lever is rotated in the forward direction, A structure is adopted that can approach the braking ring and press the elastic member, the movable braking plate, and the fixed braking plate against the casing.

[Operation] When the operating lever of the present invention is rotated in the forward direction from the neutral position, the braking ring fitted to the operating lever is also rotated, and the female screw engraved on the braking ring has one end The sleeves in which the male screws engraved in one area are screwed are moved to the operation lever side because the screws are in the tightening direction, so the braking collar provided at the other end is fixed via the elastic member. The braking plate and the movable braking plate are pressed against the side surface of the spline hole, and the resistance increases and the locking force gradually increases as the operation lever rotates in the forward direction.

When the operation lever is rotated in the backward direction from the neutral position, the respective screws are in the loosening direction, so that the sleeve moves in the direction opposite to the operation lever and smoothly rotates. That is, the reverse drive is a temporary operation and does not need to be locked at all.

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

FIG. 1 is a partially cutaway side view of an essential part showing an embodiment of the device of the present invention.

Reference numeral 1 denotes a casing, in which a spline hole 2 is engraved, the spline hole 2 is provided with a spline which can be fitted into the spline on the outer periphery thereof, and a braking collar 3 is provided at one end thereof. Male screw 4 on one area of the outer circumference of the end
A sleeve 6 having a shaft hole 5 formed therein is fitted in the shaft hole 5 so as to be prevented from rotating and slidable in the axial direction. A shaft 7 is pivotally supported in the shaft hole 5, and one end of the shaft 7 is supported. A driven member 9 having a brake plate locking hole 8 is continuously provided on the, and an operation lever 10 is fixed to the other end. In the brake plate locking hole 8,
An annular movable braking plate 11 that is engaged with the braking plate locking hole 8 and rotates together, and a fixed braking plate 12 that is fitted into the sleeve 6 and is prevented from rotating are alternately held in contact with their respective side surfaces. The elastic member 13 is interposed between the braking collar 3 and the braking plate 12. Further, the braking ring 14 in which the female screw 15 into which the male screw 4 engraved in the sleeve 6 has been engraved is fitted so that the outer peripheral portion thereof is slidable and co-rotatable with respect to the operating lever. .

In the above-mentioned configuration, the engraving directions of the male screw 4 and the female screw 15 must be such that the sleeve 6 moves in the direction of arrow A when the operation lever 10 is rotated in the forward direction. I have to.

Explaining the operation lever having such a structure as an example used for remote control of a marine engine, for example, by rotating the operation lever 10 in the forward direction from the neutral position, the male screw 4 is moved.
Since the sleeve 6 is moved in the direction of the arrow A by screwing with the female screw 15, the stationary guard plate 12 and the movable brake plate 11 are gradually splined by the braking collar 3 provided on the sleeve 6 via the elastic member 13. Since it is pressed against the side surface 2a of the hole 2, the friction between the braking plates increases in proportion to the increase in the turning angle of the operating lever, and the locking force increases.

That is, this structure is designed so that the return spring attached to the carburetor or the like is pulled as the opening degree of the carburetor of the engine is increased by operating the operation lever in the forward direction, and the urging force is gradually increased. It has a structure that increases the locking force of the operating lever.

Next, when the operation lever is rotated in the backward direction, the male screw 4
And the female screw 15 are screwed in the loosening direction, and the sleeve 6 is B
Since the brake collar 3 moves in the direction of the arrow finger, and the braking collar 3 also moves in the direction of the arrow B, the respective brake plates are not pressed and locked. That is, it is not necessary to lock the operation lever because the reverse movement is temporary as described above.

[Advantages of the Invention] In the lock device for the operating lever of the present invention, when the operating lever is operated in the forward direction, the pressing force of the braking plate by the braking brim provided on the sleeve gradually increases as the rotation of the operating lever increases. It is designed to increase in number, and even if you release your hand from the operation lever at any rotation position, you can keep the locked state at that position, and there is no need for extra operation to lock the operation lever. A locking device for an operating lever, which has an excellent effect that has not been available in the past, that can lock the operating lever extremely easily.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of an essential part showing an embodiment of the device of the present invention. 1: Casing, 2: Spline hole, 3: Bracket, 4: Male screw, 5: Shaft hole, 6: Sleeve, 7: Shaft, 8: Braking plate locking hole, 9: Braking member, 10: Operating lever, 11 : Movable braking plate, 12: Fixed braking plate, 13: Elastic member, 14: Braking ring, 15: Female screw.

Claims (1)

[Scope of utility model registration request] 1. A casing, a spline hole formed in the casing and having at least one spline formed therein, and a cylindrical spline that can be fitted into the spline hole is formed in the outer periphery of the casing. A sleeve having a braking collar at one end and an external thread engraved in a region of the outer circumference at the other end and having an inner diameter as a shaft hole and slidable in a direction parallel to the shaft center; A pivotally supported shaft, a driven member connected to one end of the shaft and having a braking plate locking hole, an operating lever fixed to the other end of the shaft, and the inside of the braking plate locking hole A plurality of annular movable braking plates that rotate together with the driven member and a plurality of annular fixed braking plates that are fitted to the outer peripheral surface of the sleeve to prevent rotation are alternately stacked.
In addition, the side surfaces are stored in contact with each other, an elastic member is mounted between the driven member and the braking plate, and a female screw into which the male screw of the sleeve is screwed is engraved, and the outer peripheral surface is A brake ring slidably and co-rotatably engaged with the operation lever,
The direction in which the male screw and the female screw are screwed is such that when the operation lever is turned in the forward direction, the braking collar approaches the braking ring, and the elastic member, the movable braking plate, and the fixed braking plate are connected to each other. A lock device for an operation lever, which is characterized by a structure capable of being pressed against a casing.