JPS587604Y2 - positioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a positioner that converts the two-dimensional mechanical position of a stick that makes spherical motion into an electrical signal.

This type of positioner is used, for example, in a control room desk in a television broadcasting studio, where the adjuster adjusts the positional relationship between two composite screens while looking at the monitor screen, and is used as a device that protrudes from the panel. This is a device that generates two-dimensional analog electrical signals by manually manipulating a stick in any two-dimensional direction.

Such a positioner has a structure in which orthogonal components of the movement of the stick are mechanically detected and transmitted to the rotation axis of the potentiometer.

Therefore, some force is required to operate the stick, and in order to finely adjust this, the longer the operating part of the stick is, the easier it is to operate.

On the other hand, since the long stick becomes a hindrance when the positioner is not operated, it is known that the stick has a coaxial double structure and the stick is pulled out long only when the positioner is operated.

In a device having such a conventional structure, both of the two stick parts forming the coaxial structure are made of metal, and scratches are likely to occur due to their rubbing together.

In addition, it required parts with spring force to keep the stick stationary when it was pulled out for a long time, making it complicated and causing failures.

The present invention is an improvement on this, and aims to provide a positioner equipped with a stick that has a simple structure, is less likely to malfunction, and is not prone to scratches.

The present invention is characterized by a structure in which the outer tube portion of the coaxial structure stick is made of resin, and an axial slit is formed at the end of the tube to utilize the spring force.

In other words, the present invention includes a spherical bearing, a stick supported by the spherical bearing and configured to be movable in two dimensions by manual operation, and an elongated hole into which the stick is slidably inserted. a first arm rotatably held about a straight line included in a plane including the axis of rotation, and a long hole into which the stick is slidably inserted; a second arm rotatably about a straight line as an axis of rotation and held such that the major diameter direction of the long hole is perpendicular to the major diameter direction of the long hole of the first arm;
a first potentiometer connected to apply the rotational force of this arm to the rotational axis of the arm, and a second potentiometer connected to apply the rotational force of this arm to the rotational axis of the second arm. In the positioner equipped with a tensiometer, the stick has a spherical outer shape at an upper end, the spherical part is supported by the spherical bearing, and the tip has a thick wall structure, and a plurality of slits are formed in the tip. The core frame is inserted into the inside of the tube, has a thickness that is large enough to push open the slit, and is configured to be slidable with respect to the tube. .

FIG. 1 is a sectional view showing the structure of an embodiment of the present invention.

The stick is formed of a coaxial structure of a metal core frame 1 and a resin tube 2, and a knob 3 is fixed to the upper end of the core frame 1.

The upper end of the tube 2 has a spherical outer shape and is supported by spherical bearings 4 and 5.

The core frame 1 and the tube 2 are configured to be slidable, and by pulling up the knob 3, the stick can be extended to the position shown by the chain line in FIG.

The stick can move about the spherical bearings 4 and 5 through a solid angle indicated by α in FIG.

The base 6 is formed with four conical or pyramidal parts corresponding to this solid angle.

The tube 2 of the stick is inserted into an elongated hole drilled in the center of two arms 7 and 8 that are perpendicular to each other, and as the solid angle movement described above slides through the elongated hole, the arm 7 Or move 8.

The arms 7 and 8 are L-shaped metal fittings, and the other sides bent at right angles are fixed to the rotating shaft of the potentiometer 90.

Therefore, with the movement of the solid angle, each arm 7 and 8
detects its orthogonal component and applies rotational force to the rotation axes of potentiometer 9 and another potentiometer hidden behind the figure, respectively.

In a positioner having such a structure, the structure of the portion where the tube 2 and the core frame 1 are brought together, that is, the portion indicated by the dotted line P in FIG. 1, is shown in FIG.

FIG. 2A is a partially cutaway front view, and FIG. 2B is a bottom view of the tube 2.

The end of the resin tube 2 is formed thick, and four slits are formed in the axial direction.

Therefore, when the mandrel frame 1 is inserted, this thick portion is slightly lifted, the snot opens, and acts to lightly press the mandrel frame 1.

Due to this structure of the stick, the core frame 1 can be pulled out to an arbitrary length and kept stationary at that position.

The structure of the present invention is extremely simple as it does not require any special parts for the coaxial structure, and has fewer failures.
Since the tube is made of resin, there will be no scratches on the surface of the stick.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional structural diagram of an embodiment of the present invention. FIG. 2 is a structural diagram of the part indicated by the dotted line (■) in FIG. 1. 1...core frame, 2...tube, 3...
・Knob, 4, 5... Spherical bearing, 6...
・Base, 7, 8... Arm, 9...
potentiometer.

Claims (1)

[Claims for Utility Model Registration] A spherical bearing, a stick supported by the spherical bearing and configured to be movable in two dimensions by manual operation, and an elongated hole into which the stick is slidably inserted. a first arm rotatably held about a straight line included in a plane including the major axis; and a long hole into which the stick is slidably inserted; a second arm that is rotatable about a straight line contained therein as an axis of rotation and held such that the major axis direction of the elongated hole is perpendicular to the major axis direction of the elongated hole of the first arm; a first potentiometer connected to apply the rotational force of this arm to the rotational axis of the second arm, and a second potentiometer connected to apply the rotational force of this arm to the rotational axis of the second arm. In the positioner, the stick has a spherical outer shape at the upper end, the spherical part is supported by the spherical bearing, and the tip is made of resin with a thick wall structure and a plurality of slits formed in the tip. A positioner comprising: a tube 2 made of aluminum, and a core frame 1 inserted into the tube, having a thickness large enough to push open the slit, and configured to be slidable relative to the tube. .