JP2005115301A - Remote control TV stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: In some types of flat panel display, if the viewing angle deviates from the front, the image becomes difficult to see clearly. On a stand where the angle can only be adjusted manually, go to the display to see the image in the best condition. I had to adjust the angle.
Moreover, in order to take advantage of being easy to carry, the stand itself had to be as light as possible.
The remote control type stand of the present invention is such that the vertical and horizontal rotating parts have a spherical shape and can be completed with one connecting structure.
In addition, for small screens, the motor shaft is set in the vertical direction, and the vertical drive can be performed by the worm wheel, and the horizontal drive can be performed by the vertical movement of the frame having the spiral shaft and the spiral groove. With the above structure, there is no vertical stand and the display is close to the line of sight.
For large screens, the motor shaft was set to the horizontal direction so that the vertical and horizontal drive could be done with worms and wheels, and the stand was low in height so that the center of the display was not raised above the line of sight.
[Selection] Figure 3

Description

  The present invention is a television or display stand that can adjust the horizontal rotation and the up / down tilt to adjust the display device etc. to the most easily viewable angle, and can be operated from the place where the person who sees it is located. A TV stand with a remote control function.

In conventional TV stands, the horizontal and vertical angle adjustments are possible, but there are no motorized ones, so it has to be done manually.
Japanese Patent Laid-Open No. 10-318489 JP 2003-185088 A

  It eliminates the hassle of getting up to manually adjust the angle or going to a TV or display, and allows you to adjust the angle by simply pressing the remote control button while sitting or sitting.

  The angle is adjusted by transmitting ON / OFF by pressing the operation button and turning the motor built in the display device support base.

Low-profile display devices such as liquid crystal that are often used in recent years have the disadvantage that they are difficult to see clearly when viewed from an angle. It becomes.
In addition, since the horizontal and vertical rotations are transmitted by one axis, the support base itself can be made small and light, and it is easy to carry for moving the place.

As a horizontal / vertical drive mechanism, the two motors can be arranged vertically in claim 2 and a thin shape can be achieved by using a worm wheel and a screw nut. In claim 3, both the two motors are arranged horizontally, and both of them use a worm wheel, so that the low height can be achieved.
The motor drive circuit has a system in which a start / stop with a transmission signal and a stop / subsequent reverse current due to a current rise at a collision at the moving region end flow for a short time.

FIG. 1 shows a display and a stand according to claim 2, FIG. 2 shows a stand, FIG. 3 shows an exploded state of the upper moving part, and FIG. 4 shows an exploded state of the lower driving mechanism part.
When a vertical drive ON signal is transmitted by remote control operation, the vertical motor 1 rotates, and the worm 2 fixed to the motor shaft rotates the wheel 3 and simultaneously moves the swing piece 4 engaged with the wheel 3.
The swinging piece 4 is provided with an arc-shaped groove 4a on the side surface, and the swinging piece 4 moves by being fitted to the arcuate protrusion 5a of the left divided piece 5 opposite thereto.
When the horizontal drive ON signal is transmitted, the horizontal motor 6 rotates, and the spiral shaft 7 fixed to the motor shaft moves the spiral piece 8 having the straight groove 8a up and down.
The spiral piece 8 is also provided with a spiral groove 8b, which is fitted into the opposing spiral projection 5b and rotates the left divided piece 5. The left divided piece 5 and the right divided piece 9 are fastened with the wheel 3 and the swing piece 4 built in, and the semicircular protrusions 5c and 9a become one circular protrusion, and the rear side of the spherical recess 10a of the lower stand 10 Is fitted into the circular recess. The left split piece 5 is also provided with a columnar protrusion 5 d on the lower surface, and is rotatably supported by a bearing 11.
Therefore, when the left divided frame 5 is turned, the built-in swing piece 4 is turned. Further, since the upper and lower motor support plates 17 are fixed to the right split piece 9, the upper and lower motor 1 rotates horizontally as a unit with the horizontal rotation of the swing piece 4.
A connecting rod 12 is fastened to the swing piece 4 and is connected to the upper stand 14 via the fastening plate 3. The upper stand 14 is provided with a spherical convex portion at a position facing the spherical concave portion 10a, and has a shape capable of horizontal rotation and swinging.

FIG. 5 shows a stand according to claim 3, FIG. 6 shows a state where the upper moving part is disassembled, and FIG. 7 shows a state where the lower driving mechanism part is disassembled.
In the same manner as described above, when a vertical drive ON signal is transmitted, the vertical motor 20 rotates, and the worm 21 fixed to the motor shaft moves the swing piece 22.
The swing piece 22 is provided with an arc-shaped groove 22a on the upper surface, and the swing piece 22 moves by being fitted to the arc-shaped protrusion of the rotary piece 23 opposed thereto.
In the case of horizontal driving, when an ON signal is transmitted, the horizontal motor 24 rotates, and the worm 21 fixed to the motor shaft rotates the rotary piece 23. Then, since the groove 22a is fitted in the rotary piece 23, the swing piece 22 rotates integrally. Further, since the upper and lower motor support plates 25 are fixed to the rotary piece 23, the upper and lower motor 20 rotates horizontally as a unit with the horizontal rotation of the swing piece 23.
As for the connection to the upper stand 26, as in the case of claim 2, a connecting rod 27 is fastened to the swing piece 22 and is connected to the upper stand 26 via a fastening plate 28. The upper stand 26 is provided with a spherical convex portion at a position facing the spherical concave portion 29a of the lower stand 29, and has a shape capable of horizontal rotation and swinging.

When the ON signal is continuously transmitted with the above configuration, the swing piece 4 or 22 or the spiral piece 8 passes through the movable region and collides with another member. However, in the motor drive electric circuit, it is larger than before when the collision occurs. The circuit was cut off when the current flowed, and immediately after that a reverse current larger than the cut-off current was passed for a short time to reverse the motor for a short time and then stop the moving operation.
This eliminates the need for a limit switch, saving space and reducing weight.

3. The stand of claim 2 comprising a display. The stand of claim 2 Upper exploded view of the above stand Exploded view of the stand drive mechanism The stand of claim 3 Upper exploded view of the stand of claim 3 The drive mechanism exploded view of the stand of Claim 3 Motor drive circuit flow diagram

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,20 Vertical motor 2, 21 Worm 3 Wheel 4, 22 Oscillation piece 4a, 22a Arc-shaped groove part 5 Left division | segmentation piece 5a Arc-shaped protrusion 5b Spiral protrusion 5c Semicircular protrusion 5d Columnar protrusion 6, 24 Horizontal motor 7 Spiral shaft 8 Spiral piece 8a Straight groove 8b Spiral groove 9 Right split piece 9a Semi-circular protrusion 10, 29 Lower stand 10a, 29a Spherical recess 11 Bearing 12, 27 Connecting rod 13, 28 Fastening plate 14, 26 Upper stand 15 Circuit board 16 Bottom cover 17 25 Vertical motor support plate 18 Horizontal motor support plate 19 Bearing support plate 23 Rotating piece

Claims (4)

  It is equipped with two motors for moving the display device, its movement is converted into vertical and horizontal movements with worm wheels, screws, nuts, etc., and the display device can be moved with one axis, A display device support base that can be started and stopped by operating the transmitter from a separated position.   In the above-mentioned display device support base, the motor is arranged so that its axis is vertical, the wheel is turned by the worm attached to the motor shaft in the vertical direction, and the nut is moved by the screw attached to the motor shaft in the horizontal direction. A display device support base in which the nut is provided with a spiral groove and the rotating body having the built-in up-and-down function is rotated.   2. The display device support base according to claim 1, wherein the motor is arranged so that the axis thereof is in a horizontal direction, the vertical direction is rotated by a worm attached to the motor shaft, and the horizontal direction is also set by the worm attached to the motor shaft. A display device support base that rotates a wheel with built-in functions.   In the above-mentioned display device support base, the moving mechanism collides at its end, senses that the motor current has risen, cuts off the current, and immediately after turning off, the motor reverses for a short time with a larger current until then, A display device support with a circuit.

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