JP2583647B2 - Operating rod device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an operating rod device, particularly an operating rod for controlling a variable resistor, while changing the operating force in both X and Y directions or in one direction.
Means to perform accurate and precise control and automatic return, and to control the resistor in a constant state if necessary, so that even if the operating rod is left untouched, the rod can be maintained at that position without automatic return The present invention relates to the operating rod device having the above.

[Conventional technology]

Conventionally, there is a known example of a stick lever disclosed in Japanese Utility Model Publication No. Sho 62-35519, for example, which is capable of automatically returning an operating rod of this kind to a neutral position. The present applicant has invented an operating rod device disclosed in Japanese Patent Application Laid-Open No. 1-172923 in order to compensate for the disadvantages of the known device. According to the present invention, the operating rod device can be simplified as compared with the known example, and the operating angle of the operating rod can be made larger than that of the known example. In addition, operating the operating rod in the XY directions can also be controlled by leaving the operating rod at a predetermined resistance value.

[Problems to be solved by the invention]

In the invention of the prior application, one or both of the X and Y directions of the operating rod can be extremely accurately and precisely performed, and the rod can be automatically returned to the neutral position. In this device, the operating rod is automatically returned by angular movement, and at its essential part, one complementary cam surface is pressed against one surface cam by spring pressure. Due to the angular movement of the operating rod, the other cam rotates while pressing against the other cam, and moves away in the axial direction against the spring pressure. When the operation of the operating rod is stopped, the other cam approaches the one cam by spring pressure, rotates in the opposite direction along the cam surface, and returns to the neutral position. In this case, the shape of the cams is trapezoidal, so that the slopes of both cams are complementary and coincide with each other. Therefore, when both cams face each other on the upper bottom surface beyond the inclined area of the inclined surfaces of the cams during operation, even if the operation of the operating rod is stopped, the spring pressure acts only on the upper bottom surface and moves the cams along the inclined surface. Do not let them return. Therefore, in this position, even if the operating rod is angularly moved and the hand is released from the rod at that position, both cams can maintain their mutual positions and continue control with a desired resistance value. However, in this case, even if the two cams are pressed against each other on the upper bottom surface, the contact is not always stable because the lengths of the upper bottom surfaces of both cams are short and there is mutual sliding of the upper bottom surfaces.

[Means for solving the problem]

The operating rod device of the present invention is supported by a fixed frame, an intermediate frame housed in the fixed frame and supported by the fixed frame, and an axis housed in the intermediate frame and orthogonal to a pivot axis of the intermediate frame. An inner frame, and an operating rod which is erected on the inner frame and freely penetrates the two frames to pivot with the inner frame with respect to the intermediate frame. Each of the pivotally supported intermediate frame and the inner frame is a frame body. Each pair of pivot shafts has a pair of pivot shafts protruding more in the axial direction, and each pivot shaft is supported by a bearing fixed to an outer frame that directly accommodates the frame, and is a pair of pivot shafts. At least one pair of bearings is fixed to a disk integrated with the inner frame to be pivoted and is loosely fitted to a shaft projecting perpendicularly from the disk in an axially movable manner. And the disk A cylinder containing an adjusting piece having a corresponding surface to be brought into sliding contact with the surface while pressing the same, an elastic material for pressing the adjusting piece toward the disk, and supporting the cylinder so that its rotation can be disengaged. And a bearing device comprising a bearing body fixed to the outer frame that directly accommodates the inner frame,
A trapezoidal cam convex surface is formed on one surface corresponding to each of the disc and the adjusting piece, and a complementary trapezoidal cam concave surface is formed on the other surface so as to be axisymmetrical to the convex surface. Is provided with means for preventing mutual sliding of both upper bottom surfaces when the corresponding upper bottom surfaces of the opposing cams slide against each other due to the rotation of the cylinder.

Further, in the case of the operating rod device for moving the operating rod only in any one of the X direction and the Y direction instead of the operating rod device, a fixed frame and a fixed frame accommodated in the fixed frame are provided. It consists of a pivotally supported inner frame, and an operating rod that stands upright on the inner frame, loosely penetrates the fixed frame, and moves angularly with respect to the fixed frame. The inner frame projects from the frame body in the axial direction to be pivoted A pair of pivot shafts, the pivot shafts are supported outside the fixed frame, and one of the bearings is fixed to a disk integrated with the fixed frame and is axially attached to a shaft protruding vertically from the disk. A cylinder accommodating loosely movably and having a corresponding surface to be brought into sliding contact with the surface of the disk while being pressed against the surface of the disk, an elastic material for pressing the adjustment member toward the disk, and the cylinder; Is fixed to the fixed frame by supporting its rotation in a detachable manner. In the bearing device comprising a bearing body, a trapezoidal cam convex surface is provided on one surface corresponding to the disk and the adjusting piece, and a trapezoidal cam concave surface complementary to the cam convex surface is provided on the other surface. The above-mentioned object is attained by providing a means which is formed axially symmetrically and wherein the bearing device is provided with means for preventing mutual sliding of both upper bottom surfaces when the corresponding upper bottom surfaces of the opposing cams are brought into sliding contact by the rotation of the cylinder. Can be achieved.

The means for preventing the upper and lower surfaces from sliding with each other is provided in a region outside the support facing the circular disk and having projections opposite to the circular plate at both ends of the arc so as to be elastically circular. The cylinder is angularly moved by a fan-shaped disk having a surface that bends toward the plate and a brake pad provided on the disk so as to be pressed against the disk in the movement area of the disk on the outer periphery of the disk. When the upper and lower bottoms are pressed against each other, the disc also rotates together with the cylinder, and the projection comes into contact with the support body, and the disc is pressed against the brake pad to prevent the upper and lower bottoms from sliding by rotating the cylinder against the disk. It is.

〔Example〕

Next, embodiments of the present invention will be described in detail with reference to the drawings. 1 is an elevational view showing the device of the present invention in partial cross section, FIG. 2 is a right side view of FIG. 1, FIG. 3 is a bottom view of FIG. 1, FIG. 5 is an exploded perspective view of the present invention with a part omitted, FIG. 6 is a front view of a disk, FIG. 7 is a side view of the disk, FIG. 8 is a longitudinal sectional view of a bearing device according to the present invention, and FIG. Figure 8
FIG. 10 is a left side view of FIG. 9, and FIG.
FIG. 12 is a development view showing the mutual movement of the disc and the adjusting piece.

1 is a tower-shaped fixed frame of a kotatsu, which has a rectangular opening 2 in a flat upper part in the axial direction, and an arched gate 3 on one side of which a bearing device described later is mounted. Reference numeral 4 denotes a dome-shaped intermediate frame, and an oval hole 5 is formed in the spherical section in the axial direction. The dome outer wall on the long axis side of the oval is a plane cut in the direction of the center axis of the dome, and a disk 6 is provided on one of the cross sections. On one outer wall of the dome perpendicular to the axis of the disk, an arched gate 7 of the same kind as the gate 3 is protruded, and on the opposite side, a notch into which a pivot shaft described later can be inserted is provided. Reference numeral 10 denotes a hollow semi-cylindrical semi-cylindrical inner frame, and a top hole 11 is for inserting and fixing a coil spring-shaped operating rod body 12a. On one bottom surface of the half cylinder 10, a disk 13 substantially the same as the disk of the intermediate frame 4 is provided.
The part corresponding to the turret opposite the gate 3 of the fixed frame, the corresponding outer wall part of the dome opposite the disk 6 of the intermediate frame, and the cylindrical bottom part of the inner frame opposite to the disk 13 of the inner frame, respectively, are respectively described. A pivot shaft notch is provided below.

The three frames are assembled as follows.
First, the operation rod main body 12a is inserted into the hole 11 from the inside of the inner frame 10, and is fixed with the screw 14. The rod body 12a is inserted into the hole 5 from the inside of the intermediate frame, and the disk 13 is positioned at the gate 7. The disc 6 is positioned at the gate 3 while the rod body 12a is projected from the opening 2 by integrating the inner frame and the intermediate frame. The operating rod 12 is formed by covering the operating rod 12b with the operating rod 12b. The gate 3 is provided between the intermediate frame and the outer frame that directly accommodates the intermediate frame, that is, the fixed frame, and between the internal frame and the intermediate frame that directly accommodates the intermediate frame and is fixed to the internal frame. At 7, a bearing device is provided at a corresponding position on the opposite side of the gates 3, 7, respectively. Gates 3 and 7
Is a main bearing device of this operating rod device, and the bearing device at the corresponding position on the opposite side is a normal one supported by a mounting notch, and the fixed portion, that is, the outer frame, has a variable resistance.
27, a sliding piece 28 is provided on the rotating portion, that is, the inner frame, and is supported like the shaft of the main bearing device.

The main bearing device mounted on the gates 3 and 7 is an important part of the present invention, and since both bearings have some common parts, the case of the gate 7 will be described first. The disk 13 has a shaft 15 vertically projecting outwardly. The shaft has a vertical cross section, a cylindrical adjusting piece 16 with a circular groove having a central shaft hole, and a coil spring 17 having a circular shape. It is inserted so as to fit in the groove. Also, a bearing device in which a cylindrical member 18 pivotally supported at the end of the groove 15 at the bottom of the cylinder is screwed to the gate 7 and fixed is completed. The adjustment piece 16 has a ridge on its cylindrical surface.
A ridge 19 is formed, the ridge 19 fits into a corresponding groove in the inner wall of the cylinder, and the adjusting piece inserted in the cylinder moves in the cylinder in the axial direction but does not rotate. This bearing device will be referred to as a first bearing device.

Next, in the case of the gate 3 as well, the adjusting piece 16 and the coil spring 17 are inserted into the shaft 15 provided on the disk 6 vertically outward as in the first receiving device. However, instead of the cylindrical member 18, the end of the shaft 15 is
It is pivoted to 36. The inner wall of the cylinder 35 is formed to conform to the ridge of the adjusting piece 16 like the inner wall of the cylindrical member 18, and the adjusting piece operates in the same manner as the first bearing device. The cylinder 35 does not move in the axial direction, but is rotatably supported by a support 37 including a lower receiving base 38. On the outer bottom of the cylinder, a switching lever 39 is provided with a cutout in the support 38 of the support.
It can fit in 40 and 41. The cylinder is rotated only when the lever is switched. Thus, the bearing 37 is fixed to the gate 7 to complete the second bearing device.

A pair of trapezoidal convex cams 21 protrude from the surfaces 22 of the adjusting pieces 16 facing the disks 6 and 13 at the center of the axis, and the inclined surfaces of the convex cams are inclined to the opposite side via the upper bottom surface 21a (see FIG. 12). A trapezoidal concave cam 24 corresponding to the cam 21 is provided on the corresponding surface 23 of the disc.
A flat portion, that is, an upper bottom surface 25 is formed at a position corresponding to the convex cam in the middle of the concave cam. The operating lever device thus constructed is fixed to the lower frame 30 and attached to a frame (not shown) by the upper frame 31.

The operation of the operating lever device of the present invention will be described. In FIG.
12 is moved to the position 12A, in the direction in which the rod is raised in the drawing in FIG. 2 and only the disc 13 of the inner frame 10 is mounted on the bearing against the first bearing device fixed to the intermediate frame. It slides and rotates with respect to the adjusting piece 16 of the device. Thus, the sliding contact surface between the disc and the adjusting piece changes from the state shown in FIG. 12A to the state shown in FIG. Since the adjusting piece is housed in the cylindrical member 18 fixed to the intermediate frame, the adjusting piece does not rotate with the disk, and the convex cam 21 of the adjusting piece 16 is pushed out from the concave cam 24 of the disk with the rotation of the inner frame 10. Is done. As a result, the adjusting piece 16 is pushed into the tubular body 18 against the spring pressure 17. When the rod 12 is released, the disc first stops rotating. However, the adjusting piece 16 immediately tries to return to the old position by the spring pressure 17, and the convex cam enters the concave cam, whereby the disc rotates in the opposite direction. To automatically restore the operating lever to its previous position. In this case, the resistance value information is extracted from the corresponding variable resistance 27 and the sliding piece 28 of the first bearing device via the electric wire 29. Also, when the operating rod is moved to the position 12B, the mutual positional relationship between the disc and the adjustment piece takes a relation as shown in FIG. 12C, and when the operating rod is released, the rod is automatically returned to the old position as before. Return.

The operation of the second bearing device is exactly the same as that of the first bearing device if the switching lever 39 is inserted into the notch 40 to prevent rotation of the cylinder. That is, remove the lever 39 from the notch 40,
If the cylinder is moved about 60 ° to the position where the upper bottom surfaces 21a and 25 of the cam face each other and the lever is inserted into the notch 41 that fits it, the adjustment piece moves to a position where it does not receive spring pressure, so both Does not change its position while being in contact with the upper bottom surfaces 21a and 25 (FIG. 12d). In this state, even if the operating rod is left in the control position, the position is maintained, so that constant information can be continuously taken out from the variable resistor.

However, in this case, there are drawbacks such as that the surface in contact with the upper bottom surfaces 21a and 25 is narrow, and that the upper bottom surfaces are flat and slippery, so that their positions are easily shifted. In order to solve this problem, a means is provided on the cylinder side in contact with the disk to make the two cams more reliably face-to-face.

On the side of the second bearing device facing the disk 6 of the cylinder 35, a sector-shaped disk 43 is mounted below, that is, beyond the bearing. The disk is elastically bent, and projections 44 are formed at both ends of the arc toward the support 37. On the other hand, an area facing the disk is extended on the disk 6, and a brake pad 45 is attached to the area. When the cylinder 35 is rotated with respect to the support body 37 as described above, the projection 44 comes into contact with the support body and
When the disk 43 reaches the position 44 ', the rotated disk 43 presses against the brake pad 45, thereby fixing the cylinder 35 so as not to move with respect to the disk 6. Thus the top surface of the cam 21
a and 25 can more reliably maintain their interview position.

The next means is an example shown in FIGS. 13 and 14, in which a part of the outer edge of the cylinder 35 facing the disk 6 is extended radially, and a brake shoe 48 is provided near the end of the extension 47, Brake retainer 49 so that they move in opposite directions across the brake shoe,
50 will be dealt. The two holding members are engaged with each other by urea screws 51 outside the support body 37. The cylinder 35 is angularly moved to a position where the upper bottom surfaces 21a and 25 are in contact with each other, and at that position the screw 51 is operated by the knob 52, and the brake shoe 48 is
To prevent rotation of the cylinder.

As a third means, complementary grooves are formed in the upper bottom surfaces 21a and 25 so as to radially mesh with each other, such as radial grooves on a facing surface of a mill. In this way, when the cylinder 35 is rotated and the upper and lower surfaces come into contact with each other, the upper and lower surfaces engage with each other for each groove so that the upper and lower surfaces do not shift from each other, and the operating rod can be kept at a predetermined position.

In the above example, the operating rod is operated in the X-Y direction, and when the operating rod is released, the rod is automatically restored to the old position. In the above description, the control lever device that continues the control at the same position is described. However, the present invention can be applied to a device that can perform only one direction operation, not only the X and Y directions. In this case, instead of the three frames of the fixed frame, the intermediate frame, and the inner frame, only the fixed frame and the inner frame are used. While being pivotally mounted within the fixed frame. One of the pivots of the inner frame is pivotally supported by the second bearing device fixed to the gate of the fixed frame, so that the operation rod can be automatically returned or the operation rod can be left alone at the same position. it can.

〔The invention's effect〕

As described above, the operating rod device of the present invention controls by operating the operating rod in both the X and Y directions in the first mode, and controlling by operating the operating rod in only one direction in the second mode. In either case, when the operating rod is left unattended, it can be automatically restored to the old position, and even when the operating rod is left, control can be continued at that position. . When the control is performed while the operating rod is left angularly moved, the positions of the cams whose upper bottoms are in sliding contact with each other can be reliably maintained so that they do not shift from each other, and are free from sliding between the upper bottoms. Has an effect.

[Brief description of the drawings]

FIG. 1 is an elevational view showing the device of the present invention in a partial cross section, FIG.
1 is a right side view of FIG. 1, FIG. 3 is a bottom view of the same, FIG. 4 is a plan view of the same, FIG. 5 is an exploded perspective view of the device of the present invention with a part omitted, and FIG. Fig. 7, Fig. 7 is a side view of the disk, Fig. 8 is a longitudinal sectional view of the second bearing device of the present invention, Fig. 9 is a bottom view of Fig. 8, and Fig. 10 is a left side view of Fig. 9. 11, FIG. 11 is a view taken along the line AA of FIG. 9, FIG. 12 is a developed view showing the mutual movement of the disc and the adjusting piece, and FIGS. 13 and 14 are devices for preventing rotation of the cylinder. FIG. 13 is a sectional view showing only the upper part of the central shaft, and FIG.
The figure is a plan view of FIG. 1: Fixed frame, 2: Opening 3, 7: Arched gate, 4: Intermediate frame 5: Oval hole, 6, 13: Disc 10: Internal frame, 12: Operating rod 15: Shaft, 16: Adjusting piece 17: spring, 18: cylinder member 19: ridge, 21: convex cam 24: concave cam, 21a, 25: upper bottom 35: cylinder, 36: cylinder bottom 37: support body, 38: lower cradle 39: switching lever, 40, 41: Notch 43: Fan disk, 44: Projection 45: Brake pad, 48: Brake shoe 49, 50: Presser

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Atsushi Nakayama 443-10 Jomon, Kamakura City, Kanagawa Prefecture (56) References JP-A-1-266615 (JP, A)

Claims (5)

(57) [Claims] A fixed frame, an intermediate frame accommodated in the fixed frame and pivotally supported with respect to the fixed frame, and an internal frame accommodated in the intermediate frame and pivoted on an axis orthogonal to a pivot axis of the intermediate frame. An operating rod which is erected on the inner frame, and which penetrates the two frames loosely and penetrates the intermediate frame together with the inner frame. Each of the pivotally supported intermediate frame and the inner frame is axially moved from the frame body. Each of the projecting shafts has a pair of pivot shafts, and each pivot shaft is supported by a bearing fixed to an outer frame that directly accommodates the frame, and each pair of pivot shafts is supported by a pair of pivot shafts. One of the paired bearings is fixed to a disk integral with the inner frame to be pivotally supported, and is loosely fitted to a shaft projecting perpendicularly from the disk so as to be axially movable so as to be movable. While pressing against the surface A cylinder accommodating an adjustment piece having a corresponding surface to be pressed and an elastic material for pressing the adjustment piece toward the disk, and directly accommodating the inner frame by supporting the cylinder so that its rotation can be disengaged. A bearing device comprising a bearing body fixed to an outer frame, wherein a convex surface of a trapezoidal cam is provided on one surface corresponding to each of the disc and the adjusting piece, and a platform complementary to the convex surface is provided on the other surface. The concave surfaces of the cams are formed axially symmetrically, and the bearing device is provided with means for preventing mutual sliding of both upper bottom surfaces when the corresponding upper bottom surfaces of the opposing cams are slid by the rotation of the cylinder. Operating rod device characterized in that: 2. A fixed frame, an inner frame accommodated in the fixed frame and pivotally supported with respect to the fixed frame, and an upright mounted on the inner frame, which is loosely fitted through the fixed frame and angularly moves with respect to the fixed frame. The inner frame has a pair of pivot shafts projecting in the axial direction to be pivoted from the frame main body, and the pivot shaft is supported outside the fixed frame, and one bearing is integrated with the fixed frame. An adjusting piece having a corresponding surface that is loosely fitted movably in an axial direction to a shaft protruding perpendicularly from the disk and fixed to the surface of the disk to be slid while being pressed against the surface of the disk; A bearing device comprising a cylinder containing an elastic material for pressing a piece toward the disc, and a bearing body fixed to a fixed frame by supporting the cylinder so that its rotation can be disengaged, Trapezoidal cam convex on one side corresponding to each adjustment piece On the other surface, a complementary trapezoidal cam concave surface is formed on the cam convex surface so as to be axially symmetrical, respectively, and when the corresponding upper bottom surface of the opposed cam slides on the bearing device by rotating the cylinder, An operating rod device provided with means for preventing mutual sliding of the upper bottom surface of the operating rod. 3. The means for preventing mutual sliding of the upper and lower bottom surfaces includes a projection facing the disk at both ends of the arc in the area outside the bearing facing the cylindrical disk. A disk having a surface which is elastically bent toward the disk and a brake pad provided on the outer periphery of the disk facing the disk so as to be pressed against the disk in a movement area of the disk. 3. The operating rod device according to claim 1 or 2. 4. The means for preventing mutual sliding of the upper and lower surfaces includes an extension having a cylindrical outer edge extending integrally with the cylinder facing the disk, and a brake attached to an end of the extension. A shoe, a holding member provided on the support body to move in opposite directions with the brake shoe interposed therebetween, and a screw screwed on the holding member and simultaneously moving the holding member in the opposite direction. The operating rod device according to claim 1 or 2, further comprising: 5. A device according to claim 1, wherein said means for preventing said upper and lower surfaces from sliding relative to each other is provided with radial grooves formed on said upper and lower surfaces of said two cams so as to mesh with each other. Item 8. The operating rod device according to Item.