JPH0461576A - Display turning base - Google Patents

Abstract

PURPOSE:To constitute the base as one powered unit and to simplify the constitution by rotating a semispherical rotor in a horizontal direction moved integrally with a drive unit while being slid along a semispherical recessed face of a base and rotating a semispherical rotor integral with a circular-arc rack in a vertical direction. CONSTITUTION:In the case of driving the turning base in the horizontal direction, a torque of a motor 50 is delivered to a horizontal turning drive gear 42 via a gear group 59A or the like and the gear is moved along a tooth face of a sector gear 32, a drive unit 4 is driven around a support 31 and a semispherical rotor 2 is driven in the horizontal direction. When the turning reaches in the vicinity of a limit of the horizontal turning and a horizontal turning limit switch 44 touches with the sector gear 32, the horizontal turning operation is stopped. When the base is turned in the vertical direction, a torque is delivered to a vertical drive gear 41 and a circular-arc rack 21 meshing therewith is driven in the vertical direction (direction of arrow (a)), and the semispherical rotor 2 is driven in the vertical direction. When the base comes in the vicinity of the limit of the vertical turning, a dog 24 touches with a vertical turning limit switch 45 and the vertical turning is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a display rotating stand that rotatably supports a display main body in the horizontal and vertical directions and can be driven to rotate in the same directions by power.

[Prior Art] Conventionally, as shown in FIG. 12, a table 200 on which a display main body 100 is mounted and a table 200 integrated with the display main body of a display device such as a TV or a monitor have been used as a stand integrated with or separate from the display main body. A vertical rotation unit 300 is provided to perform vertical rotation (rotation that shakes the screen up and down), and a vertical rotation unit 300 that supports this vertical rotation unit 300 and performs horizontal rotation (rotation that shakes the screen left and right). There is a display rotary table which is made up of a horizontal rotary disk 400 and a base 500 which supports the horizontal rotary disk 400, and is rotatable in both the horizontal and vertical directions.

The details of the above-mentioned display rotating table will be explained with reference to FIG. 13, which shows a central cross section of the rotating section shown in FIG. . The vertical rotation section 300 includes a sled section 301 that is integrated with the table 200 and has a convex cylindrical shape, a vertical rotation support base 302 that has a convex cylindrical shape that is approximately equal to the curvature of the cylinder, and a sled section 301 that is integral with the table 200 and has a convex cylindrical shape.
A plurality of support rollers 304 are provided on the vertical rotation support table 302 to rotate the table 200 smoothly, and a vertical roller is provided to prevent the sled portion 301 from separating from the support rollers 304 when an external force is applied to the table 200. A stud 303 is implanted in the rotation support base 302, fits into the through hole 301A of the sled part 301, and is latched to the sled part 301.
It is composed of. The vertical rotation support 302 is fixed to the upper surface of the horizontal rotation plate 400. Horizontal rotary plate 4
00 has a built-in vertical rotation drive mechanism for tilting the vertical rotation section 300 to an arbitrary tilt angle.

The vertical rotation drive mechanism includes a worm wheel part 305 provided on the outer surface of the sled part 301, a worm 404 that engages with the worm wheel part 305, a shaft 403 that transmits rotational force to the worm 404, and a shaft 403 that transmits rotational force to the worm wheel part 305 from the outside of the horizontal direction rotation pA400. 403 and a dial portion 402 provided for transmitting rotational force. Although not shown, the worm 404 is supported so as not to move in its axial direction.

In the above disc rotary table, the dial portion 402
When rotated by hand, the engagement position of the worm 404 and the worm wheel part 305 moves relative to each other, so that the vertical rotation part 300 rotates in the vertical rotation direction (in the direction of arrow (A)), and the table 200 is rotated in the horizontal direction. It becomes possible to adjust the angle with respect to the rotary disk 400.

The horizontal rotary disk 400 is circular, and is supported in the vertical and radial directions by a plurality of support rollers 503 and 504 provided on the base 500 side, which contact the outer circumferential surface and the bottom surface of the peripheral edge thereof, and is also supported in the horizontal direction. A T-shaped groove 401A extending in the circumferential direction opposite to the center of rotation of the rotary disk 400
The upward movement is restricted by a plurality of studs 505 planted in the base 500 and hooked to the T-shaped groove 401A.

An arcuate rack 405 is provided on the bottom surface of the horizontal rotary plate 400 and corresponds to the center of rotation.
A gear 502 that meshes with 5 and a motor unit 501 that rotationally drives this gear 502 are provided on the base 500. The gear 502 reduces the rotational force of the motor and transmits it to the arcuate rack 4.05, whereby the horizontal rotary disk 400 rotates in the horizontal direction relative to the base 500.

[Problems to be Solved by the Invention] In the conventional display rotating table described above, the vertical rotating section and the horizontal rotating section are separated, and the vertical rotating section is provided on the horizontal rotating section. Therefore, there is a limit to miniaturization of the horizontal rotation and vertical rotation operating mechanisms, and it is difficult to reduce the overall height of the rotary table.

In addition, in the illustrated example, vertical rotation is performed manually, but
If this vertical rotation is also to be electrically driven, wiring to the vertical rotation motor section that will be provided within the horizontal rotation table 400 and wiring to the horizontal rotation motor section 50 provided on the base 500 are required. Therefore, it is assumed that the workability of wiring during assembly is very poor.

Furthermore, if a configuration is desired in which vertical rotation and horizontal rotation are driven by one common motor, the distance between the horizontal rotation section and the vertical rotation section is large, and the horizontal rotation or vertical rotation is If this is done, the relative positions of the vertically rotating section and the vertically rotating section will constantly change, which will complicate the power transmission mechanism and increase costs. For this reason, it is actually difficult to design a structure that is simplified by using one common motor as a power source.

[Means for Solving the Problems] The invention of claim 1 which solves the above problems is a base having a hemispherical concave surface, and a base having a hemispherical concave surface provided integrally with the back surface of a table on which a display body is placed. a hollow hemispherical rotating part that is fitted so as to be rotatable in any horizontal or vertical direction; an arcuate rack fixed to the inner surface of the hemispherical rotating part so as to be oriented in the vertical rotational direction; and a hemisphere of the base. The output gear includes a column vertically fixed to the center of the concave surface, a sector gear fixed to the column, a vertical rotation drive gear that meshes with the arc-shaped rack, and a horizontal rotation drive gear that meshes with the sector gear. A display comprising: a drive unit 1- which incorporates a rotational drive mechanism, is attached to the pillar so as to be rotatable only, and allows rotation only in a direction perpendicular to the hemispherical rotating part; It is a rotating table.

In the fourth aspect of the invention, the upper surface has a semi-cylindrical concave surface and is mounted on the base so as to be rotatable in the horizontal direction! a horizontal turntable,
A hollow semi-cylindrical rotating part that is integrally provided on the back surface of the table on which the display body is placed and that fits rotatably in the vertical direction into the semi-cylindrical concave surface of the horizontal rotating table; an arcuate rack fixed to an inner surface in a vertical rotational direction; a column fixed perpendicularly to the inside of the semi-cylindrical rotating part from the base; a sector gear fixed to the column; and the arcuate rack. It has a built-in rotary drive mechanism having a vertical rotation drive gear that meshes with the sector gear and a horizontal rotation drive gear that meshes with the sector gear as output gears, and is attached to the support column so as to be rotatable only, and the semi-cylindrical rotating portion. It is possible to move relative to the rotation direction perpendicular to the
The present invention is a display rotating stand characterized by being equipped with a drive unit that moves integrally in the horizontal rotation direction.

[Function] In the display rotary table of claim 1, when the display main body is rotated in the horizontal direction, when the horizontal rotation drive gear is rotationally driven by the rotation drive mechanism built in the drive unit, the horizontal rotation drive gear rotates like this. The drive unit moves along the tooth surface of the stationary sector gear, so the drive unit rotates around the column, and the hemispherical rotating part that moves together with the drive unit slides along the hemispherical concave surface of the base and horizontally rotates. Rotate in the direction. In this way, the display body on the table rotates in the horizontal direction.

When rotating the display body in the vertical direction, when the vertical drive gear is driven by the rotary drive mechanism, the arcuate rack that meshes with the gear is driven in the vertical rotation direction, and the hemispherical rotating part integrated with the arcuate rack rotates in the vertical rotation direction. Rotate to . In this way, the display rotating table rotates in the vertical direction.

In the display rotating table according to claim 4, horizontal rotation of the display main body is performed by horizontally rotating the semi-cylindrical rotating part and the horizontal rotating table together with a drive unit that rotates around the pillar.

The vertical rotation of the display main body is almost the same as in claim 1, in which the arc-shaped rack is driven in the vertical rotation direction, and the semi-cylindrical rotating part integrated with the arc-shaped rack rotates in the semi-cylindrical shape of the horizontal rotating table. This is done by rotating along a concave surface in a vertical rotational direction.

〔Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 8 is an overall external view of a display device employing the display rotating table 10 according to an embodiment of the invention of claim 1.
The figure is a sectional view of the display rotary table 10 taken along the line I-I in FIG. 8, and FIG. 2 is a view taken in the direction of arrow A in FIG.
3 is a view in the direction of arrow B in FIG. 1, and FIG. 4 is a view in the direction of arrow C in FIG. 2.

As shown in these figures, the display rotating table 10 on which the display main body 100 is loaded has a base 3 having a hemispherical concave surface 3a, a hemispherical convex surface 2a having the same curvature as the four hemispherical surfaces 3a, and an escapement in the center. A hollow hole having a hole 2A, which is integrally provided on the back surface of the table 1 on which the disk main body 100 is loaded, and which fits into the four hemispherical surfaces 3a of the base 3 so as to be rotatable in any direction horizontally and vertically. A hemispherical rotating part 2, an arcuate rack 21 fixed to the inner surface 2b of the hemispherical rotating part 2 in a vertical rotational direction (direction of vertically shaking the screen (in the direction of the arrow in FIG. 1)), and the base. A column 31 fixed perpendicularly to the center of the hemispherical concave surface of 3;
A sector gear 32 fixed to the upper end of this support 31 and a vertical rotation drive gear 41 that meshes with the arcuate rack 21
A rotary drive mechanism (indicated by reference numeral 70 in FIG. 5) having a horizontal rotation drive gear 42 that meshes with the sector gear 32 as an output gear is built in, and the support 31 can only rotate around the support 31. The drive unit 4 is attached to the hemispherical rotating part 2 and is movable relative to the hemispherical rotating part 2 in the vertical rotational direction, and moves integrally with the hemispherical rotating part 2 in the horizontal rotational direction. Further, a light receiving section 11 for supplying a signal from the remote controller 7 to the drive unit 4 is built into the table 1, and a board 12 for supplying power to the drive unit 4 is connected.

The drive unit 4 is sandwiched between the side surface of the arcuate rack 21 and the side surface of the guide 22 provided parallel to the arcuate rack 21 (see FIG. 2, 9), thereby forming a hemispherical shape as described above. The rotating part 2 and the drive unit 4 are movable relative to each other in the vertical rotational direction, and can move together in the horizontal rotational direction. Further, the drive unit 4 is restrained from moving upward by the sector gear 32, and therefore the hemispherical rotating portion 2 is restrained from moving vertically by the base 3 and the drive unit 4.

Further, a horizontal rotation stopper 43 and a horizontal rotation rim inch 44 are provided on the upper surface of the drive unit 4 at predetermined angle positions. Further, at both ends of the guide 22, a vertical rotation stopper 23 that can be contacted with the drive unit 4 and a dog 24 that can be contacted with a vertical rotation limit switch 45 provided on the outside of the drive unit 4 are provided. In addition, in order to ensure smooth sliding between the drive unit 4 and the hemispherical rotating portion 2, projections 46 are provided at the four corners of the bottom surface of the drive unit 4 so that the drive unit 4 slides at 1.4 points.

Rotary drive 8 built into Drive Unimet 4! A specific example of the structure 70 is shown in FIG. This rotation drive 8! The ellipse 70 is the pillar 31
A drive unit frame (hereinafter referred to as frame) 48 supported movably only in the horizontal rotational direction, a motor 50 fixed to this frame 48 and generating driving force, and a small pulley that decelerates and transmits the rotational force of the motor 50. A transmission section consisting of a belt 51, a belt 52, and a large pulley 53, a large pulley 53
A worm 54 integrally formed with the worm 54, and two worm wheels 5.5.57. that engage with the worm 54. Each worm wheel 55, 57 is integrally molded as a flange input part, and electromagnetic clutches 60, 6 transmit rotational force using electromagnetic force.
1. Amture 56 on the output side of electromagnetic clutch 60.61
．． 58, gears 59A, 59E that rotate together with this amture 56.58, shaft 47A supported by frame 48
, 47B and decelerates and transmits rotation from the gear 59A to the horizontal rotation drive gear 42.
C, 59D (Gear 59 from the worm wheel 57
The transmission system up to D constitutes a horizontal rotation transmission system), rotates on shafts 47C and 47D supported by the frame 48,
The gear group 59F, 59G, 59H (the transmission system from the worm wheel 55 to the gear 591 (the transmission system constitutes a vertical rotation transmission system), etc.) decelerates and transmits rotation from the gear 59E to the vertical rotation drive gear 41. There is.

A specific example of the electromagnetic clutch 60, 61 is shown in FIG.

The electromagnetic clutch 60.61 includes a clutch frame 601 fixed to the frame 48, fixed to this clutch frame 601,
It also has a built-in power coil 605 and a shaft 60 in the center.
2, a rotor center tube 606 that rotates on the shaft 602 and contacts the stator 603 via the thrust bearing 604, and the stator 603.
The rotor outer tube 608 is supported by a non-magnetic material support plate 607 so as to rotate with a certain clearance around the outer circumference of the rotor outer tube 608, and the worm wheel 55, 57. The amtua 56.58 is attracted to the rotor center tube 606 and the rotor outer tube 608 by the generation of magnetic force and transmits rotation.
The gear 59 rotates on the shaft 602 together with the gear 58.
It is composed of A59E, etc.

FIG. 7 shows a block diagram of a control circuit for the display rotary table. It includes a CPU 81, a drive circuit 82, a clutch control circuit 83, a DC power supply circuit 84, and the like.

Next, the operation will be explained.

When rotating the display main body 100 in the horizontal direction,
When a predetermined operation is performed on the remote control 7, one electromagnetic clutch 61 is connected and the other electromagnetic clutch 60 is disconnected, the motor 50 is activated, and the rotational force of the motor 50 is transmitted to the worm 54, the worm wheel 57, and the gear group. 59A etc., and attempts to rotate the sector gear 32 that meshes with it, but since the sector gear 32 is fixed, the horizontal rotation drive gear 42 side is transmitted along the tooth surface of the sector gear 32. The driving unit 4 rotates around the pillar 31, and the hemispherical rotating part 2, which moves together with the driving unit throat 4, rotates in the horizontal direction. In this way, the table 1 and the display main body 100 are rotated in the horizontal direction, and the orientation of the screen is changed from side to side.

When the horizontal rotation limit switch 44 on the drive unit 4 hits the sector gear 32 when the horizontal rotation reaches its limit, the signal is sent to the control circuit CF'U81 to disconnect the electromagnetic clutch 61 and turn off the motor 50. Turn off and
Horizontal rotation movement stops.

When rotating the display body 100 in the vertical direction,
One electromagnetic clutch 61 is disconnected, the other electromagnetic clutch 60
is connected and the motor 50 is activated.
The rotational force is transmitted to the vertical drive gear 41 through the worm 54, worm wheel 55, gear group 59E, etc., and the arc-shaped rack 21 that meshes with the gear is rotated in the vertical rotation direction (arrow a).
direction), and the hemispherical rotating portion 2 integrated with the arcuate rack 21 rotates in the vertical rotation direction. In this case, when the limit of vertical rotation is reached, the dog 24 fixed to the end of the guide 22 hits the vertical rotation limit switch 45, and the signal is sent to the control circuit CP Ll 81 to disconnect the electromagnetic clutch 60 and The motor 50 is turned off and the vertical rotation operation is stopped.

FIG. 9 shows another embodiment of the rotational drive mechanism of the drive unit 4. The rotational drive F1a horizontal 70 of this embodiment has two electromagnetic clutches 60 and 61 and uses only one motor 50 as a power source, whereas the rotational drive mechanism 70 described above has two electromagnetic clutches 60 and 61 and uses only one motor 50 as a power source. Directional rotation is driven separately by two motors.

That is, the frame 48 is provided with a horizontal rotation motor 50A and a vertical rotation motor 50B. Horizontal rotation motor 5
Small pulley 51A and belt 52A transmitting 0A rotational force
A conductive section consisting of a large pulley 53A and a large pulley 53A is provided.
A worm 54A is provided integrally with 3A, and this worm 54
A worm wheel 57A meshing with the worm wheel 57A, a gear 59■ integrated with the worm wheel 57A, a gear 59J meshing with the gear 59T are provided, and a horizontal rotation driving gear 42 is provided integrally with the gear 59J. Similarly, a small pulley 51B and a belt 5 transmitting the rotational force of the vertical rotation motor 50B.
2B and a large pulley 53B, a worm 54B is provided integrally with the large pulley 53B, a worm wheel 55B meshes with the worm 54B, a gear 59 K integrated with the worm wheel 55B, and a gear 59.
A gear 59L that meshes with the gear 59L is provided, and a vertical rotation drive gear 41 is provided integrally with this gear 59L. The control circuit of this embodiment is shown in block diagram form in FIG.

In the rotation drive mechanism 70' described above, the horizontal rotation motor 50A or the vertical rotation motor 50B is operated by operating the remote control 7, and the hemispherical rotation part 2 is rotated in the horizontal direction or the vertical direction.

Further, the display main body may be integrated with the table or may be separate from the table.

FIG. 11 shows an embodiment of the display rotating table according to claim 4.

This display rotating table has a semi-cylindrical rotating part 91 in place of the hemispherical rotating part 2 in the display rotating table described in FIGS. A cylindrical rotating part 92 is placed on a base 93 so as to be rotatable in the horizontal direction.
The semi-cylindrical rotating portion 91 is fitted into the semi-cylindrical concave surface 92a of the semi-cylindrical concave surface 92a so as to be rotatable in the vertical rotation direction, and the drive unit 4 similar to that in claim 1 is attached to a support 94 fixed vertically to a base 93. be. The other parts are almost the same as those described in FIGS. 1 to 8.

In the above-mentioned display rotary table, horizontal rotation of the display main body 100 is achieved by horizontally rotating the semi-cylindrical rotary part 91 and the horizontal rotary table 92 together with the drive unit 4 which rotates around the support 94. It will be done.

Further, the vertical rotation of the display main body 100 is almost the same as that described in FIG.
is driven in the vertical rotation direction, and the semi-cylindrical rotating portion 91 integrated with the arcuate rack 21 rotates in the vertical rotation direction along the semi-cylindrical concave surface 92a of the horizontal rotating table 92.

[Invention, 7] Effects] Since the present invention is configured as described above, it has the following effects.

The display rotating table according to claim 1 includes one member having a spherical surface for horizontal rotation and vertical rotation (hemispherical rotating portion).
Since the display is configured to be rotated by the rotation operation, it is possible to easily reduce the size of the operating mechanism portion of the display rotary table. In particular, the height of the display rotating table can be reduced.

In addition, since the drive parts for horizontal rotation and vertical rotation are housed in one frame as a drive unit, one
It becomes possible to drive the horizontal rotation and the vertical rotation with one power, and the rotation drive mechanism is simplified.

In addition, two limit switches for regulating the permissible rotation range in the horizontal and vertical directions can be attached to one movable part (drive unit), which simplifies electrical wiring and reduces wiring work during assembly. becomes easier.

In the display rotating table according to claim 4, the horizontal rotation and the vertical rotation are performed by two members (the semi-cylindrical rotating part and the horizontal rotating part), but one power (drive unit) can drive both directions. is performed, the rotational drive mechanism is simplified as in the case of claim 1, and along with this, operation 8! The elliptical portion can be easily miniaturized, and the height of the display rotating table can be lowered.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a display rotating table according to an embodiment of the invention of claim 1, and is an enlarged sectional view taken along line I-1 in FIG.
The figure is a view in the direction of the A arrow in Fig. 1, Fig. 3 is a view in the direction of the B arrow in Fig. 1, Fig. 4 is a view in the direction of the C arrow in Fig. 2, and Fig. 5 is a view in the direction of the C arrow in Fig. 1. A front view of the rotary drive mechanism, FIG. 6 is an enlarged sectional view of the electromagnetic clutch shown in FIG. 5, FIG. 7 is a control circuit block diagram, and FIG. 8 is an external view of a display device employing the display rotating table shown in FIG. 1. , No. 9
The figure is a front view showing another embodiment of the rotary drive mechanism built into the drive unit, FIG. 10 is a block diagram of the same control circuit, and FIG.
12 is an external view of a display device equipped with a conventional display rotary table, and FIG. 13I2I is a cross-sectional view of the display rotary table according to an embodiment of the present invention. It is a sectional view taken along the xm-xm line in FIG. 100...Display main body, 10...Display rotation stand, 1...Table, 2. Hemispherical rotating part, 3. Base,
3a... Hemispherical concave surface, 4... Drive unit, 21...
・Circular rank, 31... Strut, 32... Sectoral gear, 41... Drive gear for vertical rotation, 42. Drive gear for horizontal rotation, 70.70"... Rotation drive fi ellipse, 50.・
・Drive motor, 60.61 ・Electromagnetic clutch, 44...
Horizontal rotation limit switch, 45... Vertical rotation limit switch, 91... Semi-cylindrical rotating part, 92... Horizontal rotating table, 92a... Semi-cylindrical concave surface, 93... Base, 94... Support column .

Claims (4)

[Claims] (1) A base with a hemispherical concave surface and a hollow hollow body that is integrally provided on the back side of the table on which the display body is placed and that fits rotatably in any horizontal or vertical direction on the hemispherical concave surface of the base. a hemispherical rotating part; an arcuate rack fixed to the inner surface of the hemispherical rotating part in a vertical rotational direction; a column fixed perpendicularly to the center of the hemispherical concave surface of the base; a rotary drive mechanism having as output gears a sector gear, a vertical rotation drive gear that meshes with the arcuate rack, and a horizontal rotation drive gear that meshes with the sector gear; and a drive unit that is movable relative to the hemispherical rotating part in a vertical rotational direction and that moves integrally with the horizontal rotational direction. (2) The rotational drive mechanism has one drive motor,
It has two transmission systems, a vertical rotation transmission system that transmits the rotation of the drive motor to the vertical rotation drive gear, and a horizontal rotation transmission system that transmits the rotation to the horizontal rotation drive gear, and a clutch is provided in each transmission system. The display rotating stand according to claim 1, characterized in that: (3) The display rotating table according to claim 1, wherein the drive unit is provided with a horizontal rotation limit switch for detecting a horizontal rotation limit and a vertical rotation limit switch for detecting a vertical rotation limit. (4) A horizontal rotating table having a semi-cylindrical concave surface on its upper surface and rotatably placed on the base in the horizontal direction; and a horizontal rotating table which is integrally provided on the back surface of the table on which the display body is placed. a hollow semi-cylindrical rotating part that fits into the semi-cylindrical concave surface so as to be rotatable in the vertical direction; an arcuate rack fixed to the inner surface of the semi-cylindrical rotating part in the vertical rotational direction; A post vertically fixed to the inside of the cylindrical rotating part, a sector gear fixed to the post, a vertical rotation drive gear that meshes with the arcuate rack, and a horizontal rotation drive gear that meshes with the sector gear. a drive unit that has a built-in rotational drive mechanism, is attached to the support column so as to be rotatable only, is movable relative to the semi-cylindrical rotating part in the vertical rotational direction, and moves integrally with the semicylindrical rotational part in the horizontal rotational direction; A display rotating stand characterized by comprising: