JPH0582005U - Electric lever device - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] To reduce the dead zone and the mysterious output signal of the electric lever device. [Structure] First and second slits 12 and 13 are formed in a cross shape at a base end portion of an operating lever 3, and the first slit 12 is formed.
The first arm is attached to both ends of the first round bar 14 inserted into the first swing member, and the first arm of the first swing member is connected to the rotary shaft 10 of the rotary potentiometer 9. , The second round bar 15 fitted in the second slit 13 has a second
The arm 17 is attached to form the second swing member 19, and the second swing member 19
The second arm 17 of the swinging member 19 is connected to the rotary shaft 10 of the rotary potentiometer 9, and a collar 20 having a notch groove 21 is rotatably provided at the base end portion of the operating lever 3, and the notch groove 21 is provided. The first round bar 14 is fitted. [Effects] The gap between the notch groove 21 and the first round bar 14 and the gap between the second slit 13 and the second round bar 15 can be reduced to reduce the dead zone and histility of the potentiometer.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric lever device that swings an operation lever back and forth and left and right to rotate a rotary potentiometer and outputs an electric signal proportional to a swing stroke of the operation lever.

[0002]

[Prior Art]

 Since the electric lever device outputs multiple electrical signals with a single operating lever, the number of operating levers is less than the number of actuators when controlling the operation of construction machinery actuators equipped with multiple actuators such as power shovels. It is possible and advantageous. As such an electric lever device, for example, those shown in FIGS. 1 and 2 are known. That is, the longitudinal intermediate portion of the operating lever 3 is supported on the upper wall 2 of the box-shaped housing 1 so as to be swingable back and forth and left and right by the ball 4, etc., and the tip portion of the operating lever 3 is substantially U-shaped. Of the rotary potentiometer 9 having both ends of the first and second gimbals 5 and 6 attached to the front, rear, left and right of the housing 1 by inserting the first and second gimbals 5 and 6 into the long grooves 7 and 8. When the operating lever 3 is connected to the rotary shaft 10 and the support shaft 11, respectively, and the operating lever 3 is rocked back and forth and left and right, one of the first and second gimbals 5 and 6 rocks to rotate the rotary shaft 10 of the rotary potentiometer 9. An electric lever device that rotates to output an electric signal is known.

In such an electric lever device, when the swing center 3a of the operation lever 3 and the rotation center 9a of the rotary potentiometer 9 are displaced in the vertical direction, when the operation lever 3 is swung, the tip portion thereof is swung. Is strongly pressed against the gimbal's long groove and the gimbal does not oscillate smoothly. Therefore, in the past, the tip of the operating lever 3 was made smaller than the width of the gimbal's long groove, and a large gap was provided between the two, resulting in machining or assembly errors. The gimbal rotates smoothly even if the center of rotation is misaligned. For this reason, when the operation lever 3 is swung from the center position, the gimbal does not swing and the rotary potentiometer does not operate in the swing range corresponding to the gap, so that the dead band of the output signal of the electric lever device does not operate. Is large and hysteris is large.

Therefore, the present applicant previously applied for an electric lever device capable of solving the above-mentioned problems.

This electric lever device is constructed as shown in FIGS. 3 and 4. That is, the operating lever 3 is provided on the upper wall 2 of the housing 1 so as to be swingable back and forth and left and right, the rotary potentiometers 9 provided on the front and back and left and right of the housing 1, and the operating lever 3 are provided. Together with the first swinging member 18 that swings in the front-rear direction to rotate the rotary shaft 10 of the rotary potentiometer 9, and the rotation of the rotary potentiometer 9 that swings in the left-right direction together with the operation lever 3. The operating lever 3 includes a second swinging member 19 for rotating the shaft 10. A first slit 12 extending in the front-rear direction and a second slit 13 extending in the left-right direction are formed at right angles to each other. Both ends of the second round bar 15 fitted into the second slit 13 are provided with first arms 16 at both ends of the first round bar 14 fitted into the first slit 12 to form a first swing member 18. Second arm 17 is attached to the second swing The electric lever device is a member 19.

In such an electric lever device, when the first swinging member 18 swings, the second round bar 15 slides along the second slit 13 and relatively displaces, and the second swinging member 18 moves. When 19 rocks, the first round bar 14 slides along the first slit 12 and is relatively displaced, so that the rotation center 3a of the operating lever 3 and the rotation of the first and second rocking members 18, 19 are rotated. Even if the centers 18a, 19a, that is, the rotation center 9a of the rotary potentiometer 9 are vertically displaced, between the first round bar 14 and the first slit 12 and between the second round bar 15 and the second slit 13. An unreasonable force does not act, and the gap between the first round bar 14 and the first slit 12 and the gap between the second round bar 15 and the second slit 13 can be reduced, and the output signal of the electric lever device can be reduced. The dead zone and hysteris can be reduced.

[0007]

[Problems to be solved by the device]

 In such an electric lever device, when the operation lever 3 is independently operated in the X direction and the Y direction, it is as described above, but when the operation lever 3 is operated in combination in the X direction and the Y direction at the same time, the first circle is operated. Since the bar 14 and the first slit 12 interfere with each other, and the second round bar 15 and the second slit 13 interfere with each other, the gap between the first round bar 14 and the first slit and the second round bar 15 and the second slit 13 interfere with each other. The gap between and cannot be made very small, and the dead zone of the signal and the hysteris of the electric lever device cannot be made too small. That is, when the operation lever 3 is operated in combination, the first round bar 14 and the second round bar 15 are not orthogonal to each other but become oblique and the first round bar 14 and the first slit 12 or the second round bar 15 and the second slit. Since the 13 interferes and is twisted, the above-mentioned gap cannot be made too small.

Therefore, an object of the present invention is to provide an electric lever device which can solve the above-mentioned problems.

[0009]

[Means for Solving the Problems]

 An operating lever 3 provided on the upper part of the housing 1 so as to be able to swing back and forth and left and right, a rotary potentiometer 9 provided on the front and rear and left and right of the housing 1, and a swinging direction together with the operating lever 3 The first swinging member 18 for rotating the rotary shaft 10 of the rotary potentiometer 9 and the second swinging member 18 for rotating the rotary shaft 10 of the rotary potentiometer 9 by swinging in the left-right direction together with the operating lever 3. A first slit 12 extending in the front-rear direction and a second slit 13 extending in the left-right direction are formed on the operation lever 3 so as to intersect each other at a right angle, and are inserted into the first slit 12. The first arm 16 is provided at both ends of the first round bar 14 to form the first swing member 18, and the second arm 17 is provided at both ends of the second round bar 15 fitted into the second slit 13. As the rocking member 19 An electric lever device characterized in that a collar 20 having a notch groove 21 is rotatably fitted and supported on the operation lever 3, and the notch groove 21 is fitted to the first round bar 14.

[0010]

[Operation] When the first rocking member 18 rocks, the second round bar 15 relatively moves while rocking along the second slit 13, and when the second rocking member 19 rocks, the first round bar 15 moves first. Since the round bar 14 is relatively displaced while sliding along the first slit 12 and the notch groove 21 of the collar 20, the rotation center 3a of the operation lever 3 and the rotation center 18a of the first and second rocking members 18, 19 are rotated. , 19a, that is, between the first round bar 14 and the notch groove 21 of the collar 20 and between the second round bar 15 and the second slit 13 even if the rotation center 9a of the rotary potentiometer 9 is vertically displaced. The force between them does not act, and the gap between the first round bar 14 and the notch groove 21 of the collar 20 and the gap between the second round bar 15 and the second slit 13 can be made small, and the operating lever When 3 is operated in combination, the second round bar 14 and the color 2 Is rotationally displaced with respect to the operating lever 3, the gap between the first round bar 14 and the notch groove 21 of the collar 20 can be made smaller, and the rotary potentiometer 9 immediately outputs a signal by operating the operating lever. The dead band and hysteresis of the output signal of the electric lever can be reduced.

[0011]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. The same members as in the past have the same reference numerals. First and second slits 12 and 13 extending in the front-rear direction (arrow X direction) and in the left-right direction (arrow Y direction) are formed at the tip of the operating lever 3 in a cross shape intersecting at right angles to each other in the longitudinal direction. The first and second round rods 14 and 15 are fitted into the first and second slits 12 and 13, and a pair of first and second round rods 14 and 15 are provided at both ends in the longitudinal direction. The two arms 16 and 17 are fixed to each other to form the first and second swinging members 18 and 19, and one of the pair of first and second arms 16 and 17 is one of the rotary shaft 10 of the rotary potentiometer 9. The other end is connected to the support shaft 11. The width of the first slit 12 is larger than the diameter of the first round bar 14 and there is a gap between them, but the width of the second slit 13 is the same as the diameter of the second round bar 15 and there is no gap between them. .. A collar 20 is rotatably supported on the outer peripheral surface of the distal end portion of the operating lever 3, and a notch groove 21 having the same diameter as that of the first round bar 14 is formed in the collar 20, as shown in FIG. The first round bar 14 is fitted in the cutout groove 21.

Next, the operation will be described. When the operating lever 3 is swung in the left-right direction (the direction of the arrow Y) as shown by the phantom line in FIG. 5, the second round bar 15 is moved and the second moving member 19 is swung, and the rotary potentiometer is rotated. The rotating shaft 10 of the meter 9 rotates and outputs an electric signal. At this time, since the first round bar 14 is displaced relative to the notch groove 21 and the first slit 12 of the collar 20, the rotation center 18a of the first swing member 18 and the rotation center 3a of the operation lever 3 move vertically. Even if it shifts to, the unreasonable force does not act between the first round bar 14 and the first slit 12, and the gap between the first round bar 14 and the first slit 12 can be reduced. When the operation lever 3 is swung in the front-back direction (arrow X direction), the first round bar 14 is moved via the collar 20 and the first moving member 18 is swung, and the rotary shaft 10 of the rotary potentiometer 9 is rotated. Rotates and outputs an electric signal. At this time as well, the second round bar 15 is relatively displaced with respect to the second slit 13 as described above, so that the rotation center 18a of the first rocking member 18 and the rotation center 3a of the operating lever 3 are displaced upward and downward. Also, an unreasonable force does not act between the second round bar 15 and the second slit 13, and the gap between the second round bar 15 and the second slit 13 can be reduced.

When the operating lever 3 is operated in combination, the first round bar 14 and the second round bar 15 are not orthogonal to each other as shown in FIG. Since the gap between the slit 12 and the first round bar 14 does not interfere with the first slit 12, and the collar 20 rotates around the operating lever 3 by the first round bar 14, the first round bar 14 and the collar 12 The gap between the notch groove 21 and the groove 20 can be reduced.

[0014]

[Effect of the device]

 When the first swing member 18 swings, the second round bar 15 is relatively displaced while sliding along the second slit 13, and when the second swing member 19 swings, the first round bar 14 moves. Since the relative displacement is made while sliding along the first slit 12 and the notch groove 21 of the collar 20, the rotation center 3a of the operation lever 3 and the rotation centers 18a and 19a of the first and second swinging members 18 and 19, that is, Even if the rotation center 9a of the rotary potentiometer 9 is vertically displaced, an unreasonable force is generated between the first round bar 14 and the notch groove 21 of the collar 20 and between the second round bar 15 and the second slit 13. It does not work, and the gap between the first round bar 14 and the notch groove 21 of the collar 20 and the gap between the second round bar 15 and the second slit 13 can be reduced, and the operation lever 3 can be operated in combination. When doing so, the color 20 is operated together with the first round bar 14. Since it is rotationally displaced with respect to the -3, the gap between the first round bar 14 and the notch groove 21 of the collar 20 can be made small, and the rotary potentiometer 9 immediately outputs a signal by operating the operation lever, and the electric potentiometer is operated. The dead band and hysteresis of the lever output signal can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of a conventional example.

FIG. 2 is a bottom view of first and second gimbals.

FIG. 3 is a cross-sectional view showing an example previously filed.

FIG. 4 is a bottom view of a round bar and a slit portion.

FIG. 5 is a sectional view showing an embodiment of the present invention.

FIG. 6 is a cross-sectional view of a round bar, a collar, and a slit portion.

FIG. 7 is a perspective view of a collar.

FIG. 8 is an explanatory diagram when a composite operation of the operation lever is performed.

[Explanation of symbols]

1 ... Housing, 3 ... Operation lever, 9 ... Rotary potentiometer, 10 ... Rotation shaft, 12 ... First slit, 13
... second slit, 14 ... first round bar, 15 ... second round bar, 1
6 ... 1st arm, 17 ... 2nd arm, 18 ... 1st rocking member, 19 ... 2nd rocking member, 20 ... Collar, 21 ... Notch groove.

Claims (2)

[Scope of utility model registration request] 1. An operating lever 3 provided on the upper part of a housing 1 so as to be able to swing back and forth and left and right, a rotary potentiometer 9 provided on the front and rear and left and right of the housing 1, and a back and forth together with the operating lever The first swing member 18 that swings in the direction to rotate the rotary shaft 10 of the rotary potentiometer 9 and the rotary shaft 10 of the rotary potentiometer 9 that swings in the left-right direction together with the operation lever 3. The operating lever 3 is formed of a second swinging member 19 that rotates, and a first slit 12 extending in the front-rear direction and a second slit 13 extending in the left-right direction are formed in the operation lever 3 at right angles to each other. First round bar 1 inserted
The first arm 16 is provided at both ends of the first swing member 18
A second arm 17 is provided at both ends of the second round bar 15 fitted in the second slit 13 to form a second swinging member 19, and a collar 20 having a cutout groove 21 in the operating lever 3.
Is rotatably fitted and supported, and the notch groove 21 is fitted into the first round bar 14. An electric lever device. 2. The gap between the first slit 12 and the first round bar 14 is large, the gap between the second slit 13 and the second round bar 15 is small, and the first round bar 14 and the notch groove 21 are formed. The electric lever device according to claim 1, wherein a gap between the electric lever device and the electric lever device is reduced.