JPH0771585B2 - Operating rod device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is an automatic and accurate control system that changes the operating force in the X-Y direction of an operating rod device, particularly an operating rod for controlling a variable resistor, while performing accurate and precise control. The present invention relates to an operating rod device that can also return.

[Conventional technology]

Conventionally, there are various kinds of operation lever devices of this type, particularly devices capable of automatically returning to a neutral position, and an example thereof is an automatic returning device (known example) of a stack lever of Japanese Utility Model Publication No. 62-35519. In this device, an operating rod is connected to a movable member which is in sliding contact with a variable resistor to control resistance, and a return arm whose one end is pivotally supported at a starting point is attached to a rotating shaft of the rotating member. The return arm has a structure in which it is pulled in the return direction by a spring force attached to the other end of the arm.

[Problems to be Solved by the Invention]

Since the arm of this prior art is only for returning the operating rod, the arm is connected directly to the operating rod for resistance control, and the main member for performing the XY movement is connected to the operating rod.
That is, it must be mounted in a position outside the motion area of the inner frame of the X motion and the intermediate frame of the Y motion pivotally supported by the inner frame and further supported by the outer frame. Therefore, the spring for returning the arm must also be mounted outside the movement area of each frame and parallel to the operating rod in the neutral state. Therefore, the size of the device is large only for the mounting portion of the arm and spring, and the thickness of the control box must be increased by the length of the spring. Therefore, it is not suitable for miniaturization.

Further, in the conventional device, when the operating rod is released from the operating rod, the operating rod returns to the neutral position. Therefore, in order to operate the operating rod to stop it at the inclined position, the spring must be removed and the spring force must be removed. Therefore, it is not easy to remove the spring from the outside or to insert the removed spring again if necessary.

In addition, in FIG. 11 showing a front view of an embodiment of the above-mentioned known example of the automatic operation lever restoring device, a stick lever (operation lever) 135 is shown.
There is no problem when moving the A in the direction A against the spring 125,
On the contrary, when the stick lever 135 is moved in the B direction, the operation pin (point of action) 132b integrated with the main lever 131
Pushes (rotates) the arm 126 with 126a of the return arm 126 as a fulcrum, but as the stick lever 135 is moved in the B direction, 132b approaches the recess for the shaft escape, and 132b eventually moves. It becomes impossible to operate because it fits in the escape recess. Therefore, the operation angle is limited.

[Means for Solving the Problems]

The operating rod device of the present invention is pivotally supported by a fixed frame, an intermediate frame housed in the fixed frame and pivotally supported by the fixed frame, and an axis housed in the intermediate frame and orthogonal to a pivot shaft of the intermediate frame. The inner frame and the operating rod that passes through the intermediate frame erected on the inner frame and angularly moves with the inner frame with respect to the intermediate frame. It has a pair of pivot shafts protruding in the axial direction, and each pivot shaft is supported by a bearing device fixed to an outer frame, that is, a fixed frame and an intermediate frame, which directly accommodates each frame. One bearing device for supporting the pair of pivot shafts is fixed to a disc integrated with an inner frame to be pivotally supported, and is loosely fitted to a shaft projecting from the disc and press-contacted to the surface of the disc. An adjustment piece having a corresponding surface to be slidably contacted and an elastic member for pressing the adjustment piece toward the disc are housed, and further, the protruding shaft end is pivotally supported to directly house the inner frame. The cylindrical member is fixed to the outer frame, and the inclined cam convex surface is provided on one of the corresponding surfaces of the disc and the adjusting piece, and the complementary cam concave surface is complementary to the cam convex surface on the other surface. Is formed in.

The cylindrical member of the bearing device accommodates the adjusting piece and the elastic member, and the inner cylinder pivotally supported at the end of the protruding shaft so as to be axially movable, and the inner cylinder so as to be axially movable and axially angularly movable. When the inner cylinder is in the outer cylinder, the outer cylinder is fixed to the outer frame that directly accommodates the inner frame. It also has a corresponding locking step that locks each other when protruding.

〔Example〕

 Next, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an elevational view showing the device of the present invention in a partial cross section, and FIG.
1 is a right side view of FIG. 1, FIG. 3 is a bottom view of FIG. 1, FIG. 4 is a plan view of the same, FIG. 5 is an exploded perspective view of the device of the present invention, and FIG. Fig. 7 is a front view of the piece, Fig. 7 is a side view of the adjusting piece, Fig. 8 is a development view showing mutual movement of the disc and the adjusting piece, and Fig. 9 is a perspective view of another embodiment in which the tubular body is an inner cylinder. FIG. 10 and FIG. 10 are vertical cross-sectional views showing the mutual movement of both tube ends of an outer tube accommodating an inner tube. 1 is a fixed frame in the shape of a turret, which has a square opening 2 in the upper part in the axial direction and an arch-shaped gate 3 on one side for mounting a bearing device described later. 4 is a dome-shaped intermediate frame, and a spherical top has an oval hole 5 in the axial direction.
Are formed. The outer wall of the dome on the major axis side of the ellipse is a plane cut in the direction of the central axis of the dome, and a disc 6 is provided on one cross section. Further, an arch-shaped gate 7 of the same type as the gate 3 of the fixed frame 1 is projected on one outer wall of the dome orthogonal to the axis of the disc, and a notch into which a pivot shaft described later can be inserted is provided on the opposite side. . Reference numeral 10 is a semi-cylindrical inner frame having a hollow kamaboko shape, and a hole 11 at the top is for inserting and fixing an operating rod body 12a 'having a coil spring shape, and the circular plate 6 of the intermediate frame 4 is substantially attached to one bottom surface of the cylinder. A disc 13 of the same kind is provided. The corresponding parts of the turret opposite to the gate 3 of the fixed frame, the corresponding outer wall parts of the dome opposite the disk 6 of the intermediate frame, and the cylindrical bottom part of the inner frame opposite the disk 13 are for mounting the pivot shafts, respectively, which will be described later. Notches are provided.

The above three frames are assembled as follows. First, the operating rod body 12a 'is inserted into the hole 11 from the inside of the inner frame 10 and fixed with the screw 14. The rod body 12a 'is inserted into the hole 5 from the inside of the intermediate frame 4 to position the disc 13 on the gate 7. Rod main body 12 with the inner frame and intermediate frame integrated
The disc 6 is positioned on the gate 3 while the a'is projected from the opening 2. The rod body 12a 'is provided with a tube 12b' of the operating rod to form the operating rod 12. At the gate 3 and the gate 7 between the intermediate frame and the fixed frame that is the outer frame that directly accommodates the intermediate frame, and between the inner frame and the intermediate frame that directly accommodates the intermediate frame and is in a fixed relationship with the inner frame, Further, bearing devices are provided at corresponding positions on the opposite sides of the gates 3 and 7, respectively. However, since the gates 3 and 7 are substantially the same, the case of the gate 3 will be described.

This bearing device is an important part of the present invention. The shaft 15 fixedly projecting outwardly from the disc 6 has a cylindrical adjustment piece 16 having a vertical groove and a circular groove having a central shaft hole. And coil spring 17
And a cylinder member 18 in which the end of the shaft 15 is pivotally supported at the bottom of the cylinder.
Is fixed to the gate 3 to complete the bearing device. The ridges 19 formed on the cylindrical surface of the adjusting piece 16 fit into the corresponding grooves on the inner wall of the cylinder of the cylindrical member, and the adjusting piece inserted in the cylinder moves axially in the cylinder but does not rotate. The tubular member is fixed to the fixed frame on the gate 3 with screws. Since the bearing device fixed to the intermediate frame by the adjusting piece 16a facing the disc 13 facing the gate 7, the spring 17a, and the tubular member 18a can be made in the same manner, the description thereof will be omitted. A surface 22 of the adjusting piece 16 facing the disc 6 is provided with a pair of convex cams 21 projecting from the shaft center, and four corresponding concave cams 24 corresponding to the cams 21 are formed on the corresponding surface 23 of the disc. It is installed in. The number of concave cams is not limited to the above number, but it is necessary that a flat portion 25 be left between the concave cams.
On the other hand, the bearing device at the symmetrical position to the above bearing device may be an ordinary one, but in this case, a variable resistor 27 is provided in the fixed portion, that is, the outer frame, and a sliding piece 28 is provided in the rotating portion, that is, the inner frame. And is pivotally supported similarly to the shaft 15.

The operating rod device configured in this manner is fixed to the lower frame 30 and attached to the frame of the control device (not shown) via the upper frame 31.

The operation of the operating rod device of the present invention will be described. First, moving the rod 12 to the position 12a as shown in FIG. 2 is a direction in which the rod is lifted in the drawing in FIG. In this case, the disc 6 of the intermediate frame 4 is not
Rotates in sliding contact with the adjustment piece 16. As a result, the sliding contact surface between the disc and the adjusting piece changes from the state of FIG. 8a to the state of b. Since the adjusting piece is housed in the fixed cylindrical member, it does not rotate together with the disc. Then, as the intermediate frame 4 rotates, the convex cam 21 of the adjusting piece 16 is pushed out from the concave cam 24 of the disc. Accordingly, the adjusting piece 16 is pushed into the cylindrical body 18 against the pressure of the spring 17. In this state, when the rod 12 is released, the disc first stops rotating, but the pressure of the spring 17 immediately causes the adjusting piece 16 to try to receive the spring force, so that the convex cam enters the concave cam, thereby causing the disc to move. Rotates in the opposite direction to the previous one and automatically restores the operating rod. In this case, it is preferable that a stopper is installed between the two frames so that the convex cam does not extend beyond the concave cam, that is, the intermediate frame stops rotating within a predetermined angle (for example, 20 °) with respect to the fixed frame. Thus, by operating the operating rod, resistance value information is taken out from the variable resistor 27 and the sliding piece 28 on the corresponding side of the fixed bearing device through the electric wire 29. Also, when the operating rod is moved to the position 12b, the mutual positional relationship between the disc 6 and the adjusting piece 16 is as shown in FIG. 8c,
Similarly to the previous time, by releasing the operating rod, the disc 6 is rotated and restored to the old position by the pressing of the adjusting piece 16, and the operating rod is automatically returned accordingly. Further, when the operating rod 12 is moved to the positions 12c and 12d in FIG. 1, the disk 13 and the adjusting piece 16a move relative to each other, but in that case as well, relative movement between the disk 6 and the adjusting piece 16 is caused. The description is omitted because they are the same. As a result, the operating rod 12 can be simultaneously moved in the XY directions in addition to the movements only in the X and Y directions.

In the above-mentioned embodiment, the cylindrical body which receives the adjusting piece of the bearing device is fixedly attached to the outer frame. However, it is also possible to use the bearing device by setting the tubular body that receives the adjustment piece as the inner barrel 35, and fixing the inner barrel 35 at two angular displacement positions to the outer barrel 36 fixed to the outer frame. As an example of this, the inner cylinder 35
For example, a hexagonal projecting plate 37 is integrally formed on the bottom outer surface 40 of the shaft 15 and
Is pivoted through the bottom of the inner cylinder. In addition, two locking steps 38, 39 are formed on the inner surface of the bottom of the outer cylinder so as to rise from the inside to the outside.
Is provided. When the inner cylinder is housed in the outer cylinder and the hexagonal apex of the hexagonal projecting plate 37 faces vertically or vertically, the low locking step 38 hits the corner of the hexagon and the inner cylinder moves to the right in FIG. However, when the inner cylinder is rotated by 60 ° and the hexagonal apex is directed horizontally or horizontally, it stops past the low locking step 38 and stops at the high locking step 39. In this case, the inner cylinder bottom 40 is 40
The shaft moves to the position of a and stops. With this arrangement, when the inner cylinder 35 is rotated 60 ° with respect to the outer cylinder, the adjusting piece also rotates together with the inner cylinder, and the convex cam 21 is discharged from the concave cam 24 and lifted to the flat portion 25 of the disc. The hexagonal projecting plate 37 of the inner cylinder 35 and the inner cylinder bottom 40 move along the shaft 15 to the positions of 37a and 40a, respectively, and stop (Fig. 8d). In this state, the angular displacement of the disc is transmitted to the adjusting piece as it is, the adjusting piece is angularly displaced, and the restoring force due to the spring pressure is not transmitted from the adjusting piece to the disc. Therefore, even if the operating rod is operated and the hand is released, the rod 12 maintains the same position, which is suitable for continuously extracting a certain resistance information from the variable resistor. The means for moving the inner cylinder relative to the outer cylinder can rotate the inner cylinder bottom exposed from the outer cylinder bottom with a screwdriver or the like.

〔The invention's effect〕

As described above, the operating rod device according to the present invention has the operating rod X
-The elastic spring for angular return in the Y direction for automatic return is accommodated in the pivot shaft of the bearing device fixedly attached to the outer frame that pivotally supports the inner frame. On the other hand, by not having a lever for returning the inner frame, the structure of the operating rod device can be simplified and the size can be reduced three-dimensionally. Further, since the angular movement of the operating rod and the automatic return movement thereof can be interrupted in the bearing device, there is an effect that one device can selectively use the automatic drive and the automatic non-return. Further, since the structure is different from the structure having the return arm having the recess for shaft escape as in the above-mentioned known example, there is also an effect that the working angle of the operating rod can be made large.

[Brief description of drawings]

FIG. 1 is an elevational view showing the device of the present invention in a partial cross section, and FIG.
The figure is a side view of the same, a right side view of FIG. 1, and FIG.
FIG. 4 is a bottom view of the device, FIG. 4 is a plan view of the same, FIG. 5 is an exploded perspective view of an example of the device of the present invention, FIG. 6 is a front view of an adjusting piece, and FIG.
FIG. 8 is a side view of the adjusting piece, FIG. 8 is a development view showing mutual movement of the disc and the adjusting piece, FIG. 9 is a perspective view of another embodiment in which the tubular body is an inner cylinder, and FIG. FIG. 11 is a vertical cross-sectional view showing the mutual movement of both tube ends of an outer tube accommodating a tube, and FIG. 11 is a front view showing the mechanism of one example of the prior art. 1: Fixed frame 2: Opening 3, 7: Arched gate 4: Intermediate frame 5: Oval hole 6, 13: Disc 10: Inner frame 12: Operating rod 15: Shaft 16: Adjustment piece 17: Spring 18: Cylindrical member 21: Convex cam 24: Concave cam 27: Variable resistance 28: Sliding piece 35: Inner cylinder 36: Outer cylinder 37: Hexagonal projecting plate 38, 39: Locking step

Claims (4)

[Claims] 1. A fixed frame, an intermediate frame housed in the fixed frame and pivotally supported by the fixed frame, and an inner frame housed in the intermediate frame and pivotally supported on an axis orthogonal to a pivot axis of the intermediate frame. And an operating rod which is erected on the inner frame and penetrates through the intermediate frame to angularly move with the inner frame with respect to the intermediate frame. Each of the pivotally supported intermediate frame and the inner frame is axial from the frame body. Each of which has a pair of pivot shafts protruding from each other, and each pivot shaft is supported by each bearing device fixed to an outer frame which directly accommodates each frame, and one of which supports each pair of pivot shafts. The bearing device is fixed to a disk integrally formed with an inner frame to be pivotally supported, is loosely fitted to a shaft protruding from the disk, and has a corresponding surface to be slidably contacted while pressingly contacting the surface of the disk. Piece and the adjustment A cylindrical member fixed to an outer frame that directly accommodates the inner frame by pivotally supporting the protruding shaft end, and adjusts with the disc. An operating rod device characterized in that an inclined cam convex surface is formed on one surface corresponding to the one piece and a complementary cam concave surface is formed on the other surface in a complementary manner to the cam convex surface. 2. A cylindrical member of the bearing device, which accommodates the adjusting piece and an elastic member, is axially movably supported by an end of the projecting shaft, and the internal cylinder is axially moved and the central angle of the shaft is adjusted. The outer cylinder is movably accommodated and is fixed to the outer frame that directly accommodates the inner frame. The operating rod device according to claim 1, further comprising: corresponding locking steps that lock each other when protruding toward the bottom of the outer cylinder. 3. An inner cylinder of the bearing device is pivotally supported so that an axial end thereof is axially movable, and one cam convex surface of one of the sliding contact surfaces of the disc and the adjusting piece which face each other with respect to the outer cylinder is the other cam. 3. The operating rod device according to claim 2, wherein the operating rod device is housed so as to angularly move from the first position where the concave surface is engaged to the second position where the convex surface is disengaged from the concave surface. 4. The other bearing device for supporting each pair of pivot shafts comprises a variable resistor mounted on one frame and a sliding piece mounted in proximity to the pivot shaft of the other frame. The operating rod device according to any one of claims 1, 2 and 3, wherein the operating rod device is assembled so as to be slidably contacted with.