JP2009224952A - Rotating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display apparatus of which the image display apparatus body can be stably and smoothly rotated in spite of a large displacement between a centroid of the image display apparatus body and the center of rotation of a turntable having the image display apparatus body placed thereon and the flexibility of design can be improved. <P>SOLUTION: A turntable 7 is rotatably provided on a fixed base 6, and the image display apparatus body is placed on the turntable 7. Rotation of the turntable 7 is controlled by controlling the drive of a motor 12. The turntable 7 is disposed at the back of the image display apparatus body, so that the center of rotation of the turntable 7 is located back off the centroid of the image display apparatus body. A bottom plate 5 to which the fixed base 6 is fixed includes rise control holding plates 25, 26, and 27 incorporating rollers 24 which are brought into contact with an upper face of an outer peripheral part of the turntable 7 and are freely rotated in accordance with rotation of the turntable 7. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rotating device having a rotating table, and more particularly to a rotating device provided in an image display device such as a television receiver or a monitor.

  The rotation device provided in the conventional image display device is, for example, a plurality of rotatable rollers arranged circumferentially on a fixed base, and the lower surface of the outer peripheral portion of the disc in the rotating piece is supported by these rollers and rotated. A gap was provided between the rib arranged in a circle on the stand cover covering the fixed base and the upper surface of the disk.

  On the disk, a support base is attached via a pedestal or the like, and the image display device main body is attached to the support base, and the image display device main body can be smoothly rotated under the support of each roller. (For example, refer to Patent Document 1).

  At this time, the center of rotation of the disk is made to coincide with the center of gravity of the image display device main body as much as possible, the rotation radius of the roller is increased as long as there is no problem in the design, and the gap between the circular ribs of the stand cover is connected to the disk. By minimizing it within the range where it does not slip, the image display device body can be stably rotated without wobbling.

JP 2007-251717 A

  However, according to the rotating device disclosed in Patent Document 1, the center of rotation of the disc is moved rearward with respect to the center of gravity of the image display device body, and the disc is completely disposed behind the image display device body. When it is intended to give a degree of freedom to the shape of the support portion in front of the disc, there arises a problem that the image display device main body tilts due to floating behind the disc due to the load of the image display device main body.

  As an improvement measure, the gap between the circularly arranged ribs on the stand cover and the circular plate can be eliminated to prevent the floating of the circular plate. However, when the circular plate rotates, an image is displayed on the rib. While the disc tilting force due to the load of the apparatus main body is applied, the disc rotates by rubbing against the rib, so that there is a problem that smooth rotation cannot be obtained. Also, because of such friction, a larger rotational driving force is required than the current situation, and it is necessary to increase the motor voltage of the reducer and increase the reduction ratio, adding unstable factors to the design quality and increasing costs. It becomes the factor of.

  Therefore, in view of the above problems, the present invention can stably and smoothly rotate the rotating body even if the center of gravity of the rotating body and the rotation center of the turntable on which the rotation is placed are greatly deviated. An object of the present invention is to provide a rotating device capable of improving the degree of freedom of design.

  The present invention provides a rotating table on which a rotating body is placed on a fixed table so that the rotating table can be rotated to the left and right, and the rotation of the rotating table is controlled by driving a motor that drives the rotating table. In the apparatus, the turntable is disposed behind the rotated body, the rotation center of the turntable is positioned behind the center of gravity of the rotated body, is in contact with the upper surface of the outer peripheral portion of the turntable, and the turntable A floating regulation holding plate incorporating a rolling element that can roll with rotation of the base is provided on either the base to which the fixed base is fixed or the base cover that covers the base. It is in.

  According to the rotating device of the present invention, the turntable is disposed behind the rotated body, the rotation center of the turntable is positioned behind the center of gravity of the rotated body, and is in contact with the upper surface of the outer peripheral portion of the turntable. In addition, a floating regulation holding plate in which rolling elements that can roll as the turntable rotates is provided on either the base to which the fixed base is fixed or the base cover that covers the base. Even if there is a positional relationship in which the center of rotation of the rotating base and the center of gravity of the rotated body are greatly displaced and the rotating base is tilted by the load of the rotated body, the tilt of the rotating base is reduced. It has a structure that is restrained by a rolling element incorporated in the floating regulation holding plate, and when the turntable rotates, the rolling element rolls along with the rotation, so only rotation loss due to rolling friction occurs as in the conventional case. Smooth rotation is obtained, and here the rotated object Stable and can be rotated smoothly.

  Since the arrangement relationship between the rotating body and the rotating table can be adopted, the degree of freedom in designing the front of the rotating table is expanded, and the H type, X type, boomerang type, etc., which have been difficult so far, have been developed. Realization of a design with a simple shape becomes possible.

<Embodiment 1>
Hereinafter, Embodiment 1 of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, an image display device 1 including a television receiver, a monitor, and the like as a rotating device is a rotated body. Image display device main body 2 composed of an FPD panel display or the like, and a stand body 3 that rotatably supports the image display device main body 2 from side to side within a desired angle range.

  As shown in FIGS. 3 to 5, the stand body 3 includes a metal base plate 5 as a base formed in a desired shape, and a fixing base 6 fixed on the bottom plate 5 with screws or the like, A rotating base 7 is attached to the fixed base 6 so as to be rotatable left and right, and a stand cover 8 is formed in an appropriate shape for covering the inside.

  The turntable 7 includes a metal disk 10, and an aluminum column 11 is attached to the upper side of the disk 10. A gear box (reduction gear) 13 including a motor 12 and a gear train is attached to the lower side of the disk 10.

  The support 11 comprises a metal support 14 to which the image display device main body 2 is attached, and an outlet of the lead terminal 15 connected to the motor 12 and the like so that the support 14 is not visible from the bottom. Therefore, the neck cover 16 is attached. Then, the rotary table 7 is constituted by the disk 10, the support 11, the gear box 13, the support base 14, and the neck cover 16.

  The turntable 7, that is, the central portion of the disk 10 is inserted and attached to a boss portion 6 a protruding from the central portion of the fixed base 6. At this time, the outermost gear 17 of the gear box 13 and the rack 6b integrally formed with the fixed base 6 are in mesh with each other, and the motor 12 is driven to rotate the outermost gear 17, thereby The turntable 7 is structured to be rotated left and right around the axis of the boss 6a.

  Further, as shown in FIG. 3 and FIG. 4, the column 11 in the turntable 7 is attached at a position eccentric from the center of the disk 10, and the neck cover 16 and the support table 14 are attached to the column 11. The structure is made. Therefore, the support base 14 has a structure arranged at the front portion of the turntable 7. As shown in FIG. 1 and FIG. 2, the mounting table (not shown) provided on the back of the image display device main body 2 is inserted into and placed on the support base 14 of the turntable 7, thereby mounting the turntable. The image display device main body 2 is attached to 7, and the image display device main body 2 is rotatably supported by the stand body 3.

  At this time, the support base 14 is eccentrically arranged at the front part of the turntable 7, and the mounting portion of the back part of the image display apparatus main body 2 is attached to the support base 14. 7 is arranged.

  Further, the lead terminal 19 connected to the control circuit in the image display apparatus main body 2 is connected to the lead terminal 15 from the motor 12 in the turntable 7, so that the motor 12 responds to a control signal from the control circuit. The structure is driven and controlled. Then, the rotation of the turntable 7 is controlled by the drive control of the motor 12, and the rotation of the image display device body 2 placed on the turntable 7 is controlled here.

  As shown in FIG. 3, a plurality of rollers 21 that are rotatably supported are provided on the outer peripheral portion of the front half of the fixed base 6 at appropriate intervals along the circumferential direction. On the other hand, the disc 10 has a structure in which the rear portion of the outer peripheral portion thereof is partially cut out along the circumferential direction so that the rear side of the turntable 7 does not become large. Therefore, the roller 21 cannot be similarly installed on the outer peripheral portion in the latter half portion of the fixed base 6, and instead, a plurality of spacers 22 are press-fitted into the peripheral edge portion of the fixed base 6 with appropriate intervals along the circumferential direction. It is structured. Note that grease is applied to the surface of each spacer 22.

  The turntable 7 attached to the fixed table 6 is supported by a plurality of rollers 21 and a plurality of spacers 22 on the outer periphery of the disk 10 so that the turntable 7 can be smoothly mounted on the fixed table 6. Supported for rotation. A protrusion 10a is provided on the outer peripheral portion of the disc 10, and a pair of outer peripheral portions of the fixed base 6 are provided at appropriate positions in the circumferential direction at positions corresponding to the protrusion 10a of the disc 10. The stopper protrusion 6c is provided so as to protrude upward. A protrusion 10a is disposed between the stopper protrusions 6c, and the protrusion 10a abuts against each stopper protrusion 6c to restrict the rotation of the turntable 7. Here, the protrusion 10a contacts the stopper protrusions 6c. It is allowed to rotate left and right at a certain rotation angle in the contact area.

  As shown in FIG. 3 to FIG. 5, a roller 24 is installed as a rolling element that is rotatable around the rotating table 7 in a state where the rotating table 7 is rotatably attached to the fixed table 6. The metal floating regulation holding plates 25, 26 and 27 are fixed to the bottom plate 5 so as to be detachable with screws. In the present embodiment, the float regulation holding plates 25, 26, and 27 are respectively arranged corresponding to three positions that are separated from each other in the circumferential direction of the rear portion and both side portions of the disc 10 in the turntable 7.

  As shown in FIG. 5, each roller 24 is rotatably supported by a floating restriction holding plate 25, 26, 27 via a shaft 28, and the floating restriction holding plates 25, 26, 27 are attached to the bottom plate 5. In the fixed state, each roller 24 is brought into contact with the upper surface of the outer peripheral portion of the disk 10 in the turntable 7 and each roller 24 can roll on the disk 10 as the turntable 7 rotates. Has been. Here, the disk 10 is rotated around the boss 6 a at the rear and left and right sides thereof, with the peripheral edge lifted by the rollers 24.

  Further, a stand cover 8 for covering the inside is attached to the bottom plate 5, and the neck cover 16 and the support base 14 are attached to a column 11 protruding from the insertion hole 8 a of the stand cover 8. The lead terminal 15 connected to the motor 12 or the like in the gear box 13 is guided to the neck cover 16 through the insertion hole 10b of the disc 10 and the insertion hole 8a of the stand cover 8, and fixed to a predetermined position of the neck cover 16. Is done.

  Finally, the lead terminal 19 on the image display device main body 2 side attached to the support base 14 is connected to the lead terminal 15 so that the drive control of the motor 12 can be performed by a control signal from the control circuit. It is a simple structure.

  Further, in the present embodiment, a boomerang-shaped plated ornament 29 is fitted on the upper surface of the stand cover 8 positioned in front of the image display device main body 2.

  The present embodiment is configured as described above. When a predetermined operation signal is input from a remote controller (not shown), a corresponding control signal is output from the control circuit, and the motor 12 is activated according to the control signal. Driven. By driving the motor 12, the outermost gear 17 is rotated through the gear train in the gear box 13, and the image display device main body 2 is rotated together with the turntable 7.

  At this time, since the turntable 7 has a support structure arranged behind the image display device main body 2, the center of rotation of the turntable 7 and the center of gravity of the image display device main body 2 are greatly shifted. Therefore, the load is applied so that the rear of the turntable 7 is lifted by the load of the image display device main body 2, and the turntable 7 is tilted. However, the floating restriction holding plates 25, 26, 27 are in a positional relationship. Since each roller 24 incorporated in is in contact with the upper surface of the outer peripheral portion of the disk 10, the rear lifting of the disk 10 is effectively suppressed by the roller 24. When the turntable 7 rotates, each roller 24 rolls on the disk 10 with the rotation. Therefore, as in the conventional case, only rotation loss due to rolling friction occurs and smooth rotation is obtained. Here, the image display device body 2 can be rotated stably and smoothly.

  Since the arrangement relationship in which the turntable 7 is placed behind the image display device main body 2 can be adopted as described above, the degree of freedom in designing the stand body 3 in front of the turntable 7 is increased. There is an advantage that it is possible to realize not only a boomerang shape as in the embodiment but also a novel shape design such as an H shape or an X shape, which has been difficult until now.

  Moreover, in this Embodiment, in order to make the back of the turntable 7 as small as possible, the back of the disk 10 is cut | disconnected, Therefore The roller 21 cannot be arrange | positioned to the back of the fixed base 6. FIG. Therefore, as a measure for preventing the product from wobbling, the spacer 22 is arranged between the fixed base 6 and the disk 10 instead of the roller.

  And since grease is applied to the surface of each spacer 22, the frictional resistance at the contact surface between each spacer 27 and the disc 21 is reduced, and the friction loss when the turntable 7 rotates is reduced. .

<Other embodiments>
In the first embodiment, the roller 24 is used as the rolling element incorporated in the floating restriction holding plates 25, 26, and 27. However, instead of the roller 24, the bearing is used as the floating restriction holding plate. It is good also as a structure built in 25,26,27.

  Also in this case, as in the first embodiment, the rear floating of the disk 10 can be effectively suppressed by the bearing, and when the turntable 7 rotates, each bearing is moved to the disk 10 along with the rotation. Since it rolls above, only rotation loss due to rolling friction occurs, and smooth rotation is obtained. Here, the image display device body 2 can be rotated stably and smoothly, and the stand body 3 in front of the turntable 7 can be rotated. The degree of freedom of design is widened, and it is possible to realize a novel shape design.

  Moreover, in each embodiment, although it has shown as the structure which attached the float regulation holding | maintenance board 25,26,27 incorporating the roller 24 to the baseplate 5, if the stand cover 8 has required rigidity, this will be shown. It is good also as a structure which attaches to the stand cover 8 the float regulation holding | maintenance board 25,26,27 in which rolling elements, such as the roller 24 and a bearing which have such a function, were integrated.

  Furthermore, although the image display apparatus 1 which consists of a television receiver, a monitor, etc. is shown as a rotation apparatus, it is not limited to such an image display apparatus 1 at all.

1 is a perspective view showing an image display device according to a first embodiment of the present invention. It is the same exploded perspective view. It is a disassembled perspective view of a stand body. It is the IV-IV sectional view taken on the line in FIG. It is an enlarged view of the A section of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Image display apparatus, 2 Image display apparatus main body, 3 Stand body, 5 Bottom plate, 6 Fixed base, 7 Rotation base, 8 Stand cover, 24 roller, 25, 26, 27 Floating regulation holding plate.

Claims (3)

In the rotating device that controls the rotation of the rotating table by providing a rotating table on which the rotating body is placed on the fixed table so that the rotating table can be rotated left and right, and driving the motor that drives the rotating table.
The turntable is disposed behind the rotated body, the rotation center of the turntable is positioned behind the center of gravity of the rotated body, is in contact with the upper surface of the outer peripheral portion of the turntable, and rotates the turntable. A floating regulation holding plate incorporating a rolling element that can freely roll is provided on either the base to which the fixed base is fixed or the base cover that covers the base. Rotating device.   The rotating device according to claim 1, wherein the floating regulation holding plate is made of metal, and the rolling elements are rollers.   The rotating device according to claim 1, wherein the floating regulation holding plate is made of metal, and the rolling elements are bearings.

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