JP2004056606A - Turning mechanism for video device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that limitation on design occurs because the components of a turning mechanism of a turntable of a video device are large. <P>SOLUTION: This turning mechanism comprises a bracket (upper) for fixing a top plate of an optional shape; a spacer (upper) brought into contact with the bracket (upper) and for performing lubricating; a bracket (lower) brought into contact with the spacer (upper) and for fixing a bottom plate of an optional shape; a spacer (lower) brought into contact with the bracket (lower) and for performing lubricating; a washer brought into contact with the spacer (lower); a spring for pressing the washer against the spacer (lower); a cylinder disposed between the spring and the bracket (lower); and a screw for fixing the spring. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rotation mechanism of a turntable for viewing video equipment including a cathode ray tube (eg, a television receiver, a computer display, a plasma television, a liquid crystal television, etc.) at an optimal angle.
[0002]
[Prior art]
2. Description of the Related Art In recent years, the size of video equipment has increased, and a turntable having a rotation mechanism has been desired for a more comfortable viewing environment.
[0003]
Hereinafter, a conventional turntable will be described.
[0004]
2. Description of the Related Art Conventionally, a rotary table described in Japanese Patent Application No. 11-357999 is known. FIG. 12 shows the turntable. FIG. 12 shows a front view of a conventional turntable device. In FIG. 12, 1 is a storage rack body, 2 is a side plate, 3 is a bottom plate, 4 is a first caster, 5 is a second caster, 6 is a top plate, 7 is a glass door, and 8 is a caster guide.
[0005]
The operation of the conventional rotary table configured as described above will be described below.
[0006]
A plurality of first casters 4 are provided at equal intervals on the same circumference on the back surface of the bottom plate 3 of the storage rack body 1, and second casters 5 are also provided on the back surfaces on both sides in front of the bottom plate 3. With the AV equipment stored or placed in the storage rack body 1, it is moved to a predetermined position in the room using the first casters 4 and the second casters 5, and is moved under the first casters 4 at that position. The caster guide 8 is laid, and the first caster 4 is fitted into the ring-shaped groove of the caster guide 8.
[0007]
[Problems to be solved by the invention]
However, the conventional configuration has a problem in that the components of the rotation mechanism of the turntable are large, so that there is a limitation in design.
[0008]
In addition, since the rotation torque changes depending on the installation surface of the caster, there is a problem that the installation restriction is caused.
[0009]
Further, even if a rotation stopper is provided on the caster guide, the caster can easily get over, so that there is a problem that the rail is easily derailed when rotating.
[0010]
SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and aims to provide a rotation mechanism that minimizes design restrictions and installation restrictions with small components and that reliably stops rotational movement at a predetermined angle. Aim.
[0011]
[Means for Solving the Problems]
The present invention has the following configuration to achieve the above object.
[0012]
The rotating mechanism of the video apparatus according to the present invention includes a bracket (upper) for fixing a top plate of an arbitrary shape, a spacer (upper) for contacting the bracket (upper) for lubrication, and an arbitrary shape for contacting the spacer (upper). A bracket (lower) for fixing the bottom plate, a spacer (lower) for lubricating in contact with the bracket (lower), a washer for contacting the spacer (lower), and a spring for pressing the washer against the spacer (lower). , A cylinder provided between the spring and the bracket (lower), and a screw for fixing the spring. With this configuration, the rotation mechanism can be obtained with small components, thereby eliminating design restrictions. Further, since the rotational torque can be adjusted by changing the amount of pressing of the spring by changing the length of the cylinder, an arbitrary rotational torque can be set and the installation surface is not affected, so that there is no restriction on installation.
[0013]
The rotation mechanism of the video device according to the present invention has a configuration in which the lubrication surfaces of the spacer (upper), the bracket (upper) in contact with the spacer (upper), and the bracket (lower) are conical. With this configuration, the contact area of the lubricating surface can be increased, and the load per unit area applied to the spacer (upper) is reduced, so that the amount of wear of the spacer (upper) due to rotational motion is reduced, and the wear resistance of the rotating mechanism is reduced. Improve the performance.
[0014]
The rotation mechanism of the video device of the present invention has a configuration in which the spacer (upper) and the spacer (lower) are made of a lubricating resin material. This configuration eliminates the need for expensive steel ball bearings and metal lubrication washers, and eliminates the need for a replenishing device that prevents exhaustion or deterioration such as lubricating oil or grease. provide.
[0015]
The rotation mechanism of the video device of the present invention has a configuration in which a part of the spacer (upper) is cut. With this configuration, even if the finish of the contact lubrication surface of the bracket (upper) and the bracket (lower) varies due to processing, the gap between the cut surfaces of the spacer (upper) is arbitrarily widened or twisted, so that the bracket is By following the lubricated surfaces of the (upper) and the bracket (lower), variations in the processing of the bracket (upper) and the bracket (lower) are absorbed, and rattling caused by processing tolerance is suppressed.
[0016]
The rotation mechanism of the video device according to the present invention includes a stopper member erected from the bracket (upper) and a contact member provided on the bracket (lower) and abutting on the stopper member. With this configuration, the rotation mechanism is regulated at an arbitrary angle in order to suppress over-rotation of the bracket (upper), which is the upper rotation member, with the contact member.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings.
[0018]
(Embodiment 1)
FIG. 1 is an external perspective view of a rotating television set equipped with a rotating mechanism for a video apparatus according to the present invention, in which a plasma television is installed. In FIG.
[0019]
FIG. 2 is an external perspective view of a turntable provided with the rotation mechanism of the video device of the present invention. In FIG. 2, reference numeral 10 denotes a turntable, and 11 denotes a top plate.
[0020]
3 and 4 are an exploded perspective view and an assembled cross-sectional view of a turntable provided with a rotation mechanism of the video device of the present invention. In FIGS. 3 and 4, reference numeral 13 denotes a rotating body for fixing a top plate of an arbitrary shape. A certain bracket (upper) is preferably made of a resin molded product or an aluminum die-cast or metal casting or sheet metal member. The fixing of the top plate and the bracket (upper) 13 is preferably performed by screw fastening, claw fitting, caulking or bonding. 14 is a spacer (upper) which is in contact with the bracket (upper) 13 and is a lubricating medium, and 15 is a bracket (lower) which is in contact with the spacer (upper) 14 and fixes the bottom plate 21 having an arbitrary shape, preferably a resin molded product. Or, it is composed of aluminum die cast, metal casting or sheet metal member. Reference numeral 16 denotes a spacer (lower) that is in contact with the bracket (lower) 15 and is a lubricating medium, and 17 is a washer that is in contact with the spacer (lower) 16, and is preferably formed of a resin molded product, aluminum die cast, metal casting, or sheet metal member. Is done. Reference numeral 18 denotes a spring that presses the washer 17 against the spacer (lower) 16. A leaf spring, a coil spring, rubber that is an elastic body, or the like can be used as the spring. A leaf spring is particularly preferable in terms of ease of processing. Reference numeral 19 denotes a cylinder disposed between the spring 18 and the bracket (lower) 15, and is preferably formed of a resin molded product, an aluminum die cast, a metal casting, or a sheet metal member. Reference numeral 20 denotes a screw for fixing the spring 18. Reference numeral 21 denotes a bottom plate fixed to the bracket (lower) 15. The fixing between the bracket (lower) 15 and the bottom plate 21 is preferably formed by screw fastening, claw fitting, caulking or bonding. Reference numeral 12 denotes a cover fixed to the bottom plate 21. The fixing between the bottom plate 21 and the cover 12 is preferably performed by screw fastening, claw fitting, caulking or bonding.
[0021]
The operation of the rotating mechanism of the video device configured as described above will be described with reference to FIGS.
[0022]
When a force for rotating the plasma television 9 is applied, the rotation force is transmitted to the bracket (upper) 13 via the top plate 11 fixed to the plasma television 9. On the other hand, since the bottom plate 21 is fixed to the floor surface and the bottom plate 21 and the bracket (lower) 15 are also fixed, the bottom plate 21 is fixed between the bracket (upper) 13 and the bracket (lower) 15. Friction occurs. Due to these frictions, abnormal sounds, wear of the contact portions, and non-uniform rotational motion (fluctuations in torque) occur, which significantly lowers the merchantability. These are prevented by the spacer (upper) 14, which is a lubricating medium.
[0023]
Further, since the rotation torque is proportional to the pressure applied from the bracket (upper) 13 and the bracket (lower) 15 to the spacer (upper) 14, the spacer (lower) 16, the washer 17, A uniform pressure can be applied to the spacer (upper) 14 via the screw 20 to obtain a stable rotation torque.
[0024]
Furthermore, since the amount of pressing of the spring 18 can be changed by arbitrarily changing the length of the cylinder 19, the rotation torque of the rotation mechanism can be set arbitrarily.
[0025]
As described above, according to the present embodiment, since the rotating mechanism can be obtained with small components, there is no restriction on design. Further, since the rotational torque can be adjusted by changing the amount of pressing of the spring by changing the length of the cylinder, an arbitrary rotational torque can be set and the installation surface is not affected, so that there is no restriction on installation.
[0026]
(Embodiment 2)
5 and 6 are an exploded perspective view and an assembled cross-sectional view of a turntable provided with the rotation mechanism of the video device of the present invention. In FIG. 6, the left half shows FIG. Reference numeral 13a denotes a bracket (upper) which is a rotating body for fixing the top plate 11 having an arbitrary shape, and is preferably formed of a resin molded product, an aluminum die cast, a metal casting, or a sheet metal member. 14a is a spacer (upper) that is in contact with the bracket (upper) 13a and is a lubricating medium, and 15a is a bracket (lower) that is in contact with the spacer (upper) 14a and fixes the bottom plate 21 having an arbitrary shape, preferably a resin molded product. Or, it is composed of aluminum die cast, metal casting or sheet metal member. Reference numeral 16 denotes a spacer (lower) that is in contact with the bracket (lower) 15a and is a lubricating medium, and 17 is a washer that is in contact with the spacer (lower) 16, and is preferably formed of a resin molded product, an aluminum die cast, a metal casting, or a sheet metal member. Is done. Reference numeral 18 denotes a spring that presses the washer 17 against the spacer (lower) 16. A leaf spring, a coil spring, rubber that is an elastic body, or the like can be used as the spring. A leaf spring is particularly preferable in terms of ease of processing. Reference numeral 19 denotes a cylinder disposed between the spring 18 and the bracket (lower) 15a, and is preferably formed of a resin molded product, an aluminum die cast, a metal casting, or a sheet metal member. Reference numeral 20 denotes a screw for fixing the spring 18, which has the same configuration as that shown in FIG.
[0027]
4 in that the lubrication surfaces of the spacer (upper) 14a and the brackets (upper) 13a and the bracket (lower) 15a in contact therewith are conical.
[0028]
The operation of the rotating mechanism of the video apparatus configured as described above will be described with reference to FIG.
[0029]
When a rotational force is transmitted to the bracket (upper) 13a, friction occurs between the bracket (upper) 13a and the bracket (lower) 15a. Due to these frictions, abnormal sounds, wear of the contact portions, and non-uniform rotational motion (fluctuations in torque) occur, which significantly lowers the merchantability. These are prevented by the spacer (upper) 14a which is a lubricating medium.
[0030]
Further, since the wear amount of the spacer (upper) 14a is proportional to the pressure applied to the spacer (upper) 14a from the bracket (upper) 13a and the bracket (lower) 15a, the spacer (upper) 14a and the aforementioned By increasing the contact area by making the shape of the lubrication surfaces of the bracket (upper) 13a and the bracket (lower) 15a conical, the load per unit area is reduced, and the wear amount of the spacer (upper) 14a is reduced. Improve the life of the rotating mechanism.
[0031]
As described above, according to the present embodiment, the wear amount of the spacer (upper) 14a due to the rotational movement is reduced, and the wear resistance of the rotating mechanism is improved.
[0032]
In the above description, the spacer (upper) 14a and the spacer (lower) 16 are lubricating media, and generally a bearing using a steel ball, a lubricating washer made of metal, lubricating oil or grease is used. The material of the spacer (upper) 14a and the spacer (lower) 16 is a lubricating resin material.
[0033]
This configuration eliminates the need for expensive steel ball bearings and metal lubrication washers, and eliminates the need for a replenishing device that prevents exhaustion or deterioration such as lubricating oil or grease. provide.
[0034]
(Embodiment 3)
7 and 8 are an exploded perspective view and an assembled cross-sectional view of a turntable provided with the rotation mechanism of the video device of the present invention. In FIG. 8, reference numeral 13b denotes a rotating body for fixing the top plate 11 having an arbitrary shape. The bracket (upper) is preferably made of a resin molded product or an aluminum die-cast or metal casting or sheet metal member. 14a is a spacer (upper) which is in contact with the bracket (upper) 13b and is a lubricating medium, 14b is a cut surface of the bracket (upper), and 15b is in contact with the spacer (upper) 14a to fix the bottom plate 21 having an arbitrary shape. The bracket (lower) is preferably made of a resin molded product or an aluminum die-cast or metal casting or sheet metal member. Reference numeral 16 denotes a spacer (lower) that is in contact with the bracket (lower) 15b and is a lubricating medium, and 17 is a washer that is in contact with the spacer (lower) 16, and is preferably made of a resin molded product, aluminum die cast, metal casting, or sheet metal member. Is done. Reference numeral 18 denotes a spring that presses the washer 17 against the spacer (lower) 16. A leaf spring, a coil spring, rubber that is an elastic body, or the like can be used as the spring. A leaf spring is particularly preferable in terms of ease of processing. Reference numeral 19 denotes a cylinder disposed between the spring 18 and the bracket (lower) 15b, and is preferably formed of a resin molded product, an aluminum die cast, a metal casting, or a sheet metal member. Reference numeral 20 denotes a screw for fixing the spring 18, which has the same configuration as that of FIG.
[0035]
6 is different from the configuration of FIG. 6 in that a cut surface 14b is formed by cutting a part of the spacer (upper) 14a, and the bracket (upper) 13b and the bracket (lower) 15b have processing tolerances. It is a big finished point.
[0036]
The operation of the rotating mechanism of the video device configured as described above will be described with reference to FIG.
[0037]
When a rotational force is transmitted to the bracket (upper) 13b, friction occurs between the bracket (upper) 13b and the bracket (lower) 15b. Due to these frictions, abnormal sounds, wear of the contact portions, and non-uniform rotational movement (fluctuations of the torque) occur, which significantly lowers the merchantability. These are prevented by the spacer (upper) 14a which is a lubricating medium. Further, even when the finish of the contact lubrication surface between the bracket (upper) 13b and the bracket (lower) 15b varies, the gap between the cut surfaces 14b provided on the spacer (upper) 14a is arbitrarily widened or twisted. By following the lubricated surfaces of the bracket (upper) 13b and the bracket (lower) 15b, variations in the processing of the bracket (upper) 13b and the bracket (lower) 15b are absorbed, resulting in processing tolerances. Reduces rattling.
[0038]
The rotation mechanism of the video apparatus according to the present invention provides a stable rotation torque by suppressing rattling caused by processing tolerance of the rotation mechanism by this configuration.
[0039]
(Embodiment 4)
9 and 10 are component diagrams of a turntable provided with a rotation mechanism for a video device of the present invention, and FIG. 11 is an assembled cross-sectional view of a turntable provided with a rotation mechanism for a video device of the present invention. In FIG. 11, 13a is composed of a bracket (upper), 14a is composed of a spacer (upper), and 15a is composed of a bracket (lower). The above is the same as the configuration in FIG.
[0040]
6 in that a stopper member 22 provided on the bracket (upper) 13a and a contact member 23 provided on the bracket (lower) 15a and in contact with the stopper member 22 are provided. It is.
[0041]
The operation of the rotating mechanism of the video device configured as described above will be described with reference to FIG.
[0042]
When a rotational force is transmitted to the bracket (upper) 13a, a rotational motion due to friction occurs between the bracket (upper) 13a and the spacer (upper) 14a and between the spacer (upper) 14a and the bracket (lower) 15a. . The rotation mechanism is brought into contact with a stopper member 22 erected from the bracket (upper) 13a and a contact member 23 provided on the bracket (lower) 15a and in contact with the stopper member 22a. To control the rotational movement of
[0043]
With this configuration, the rotation mechanism of the video device of the present invention suppresses the excessive rotation of the bracket (upper) serving as the upper rotation member with the contact member of the bracket (lower) serving as the lower fixing member. The angle is regulated.
[0044]
【The invention's effect】
As described above, according to the present invention, since the rotating mechanism can be obtained with small components, there is no limitation in design. In addition, since the rotational torque can be adjusted by changing the amount of pressing of the spring by changing the length of the cylinder, an arbitrary rotational torque can be set and there is no influence on the installation surface, so that there is no restriction on installation. In addition, there is no need to use expensive steel ball bearings or metal lubricating washers, and there is no need for a replenishing device that prevents depletion or deterioration such as lubricating oil or grease. . In addition, by providing a cutout in the spacer (upper), which is a lubricating medium, it is possible to suppress rattling caused by processing tolerances of the rotating mechanism and provide a stable rotating torque. Further, by providing the stopper member on the bracket (upper) and the contact member on the bracket (lower), an excellent effect of regulating the rotation mechanism at an arbitrary angle can be obtained.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a rotary table provided with a rotary mechanism according to a first embodiment of the present invention; FIG. 2 is an external perspective view of a rotary table provided with a rotary mechanism according to the first embodiment of the present invention; FIG. 3 is an exploded perspective view of the rotation mechanism according to the first embodiment of the present invention. FIG. 4 is an assembly sectional view for explaining the operation of the rotation mechanism according to the first embodiment of the present invention. FIG. 6 is an exploded perspective view of the rotation mechanism according to the second embodiment. FIG. 6 is an assembled cross-sectional view for explaining the operation of the rotation mechanism according to the second embodiment of the invention. FIG. 7 is an exploded perspective view of the rotation mechanism according to the third embodiment of the invention. FIG. 8 is an assembled sectional view for explaining the operation of the rotating mechanism according to the third embodiment of the present invention. FIG. 9 is a component diagram of the rotating mechanism according to the fourth embodiment of the present invention. FIG. 11 is a component diagram of the rotation mechanism according to the fourth embodiment. Front view of the assembled cross-sectional view for explaining the operation of the rotating mechanism in Embodiment 4 Figure 12 conventional turntable device [Description of symbols]
DESCRIPTION OF SYMBOLS 1 Storage rack main body 2 Side plate 3 Bottom plate 4 First caster 5 Second caster 6 Top plate 7 Glass door 8 Caster guide 9 Plasma television 10 Turntable 11 Top plate 12 Cover 13 Bracket (top)
13a Bracket (upper) cone 13b Bracket (upper) large cone 14 Spacer (upper)
14a Spacer (upper) cone 14b Cutting surface 15 Bracket (lower)
15a Bracket (lower) cone 15b Bracket (lower) large cone 16 Spacer (lower)
17 Washer 18 Spring 19 Tube 19a Tube (long)
Reference Signs List 20 Screw 21 Bottom plate 22 Stopper member 23 Contact member

Claims (5)

A bracket (top) for fixing an arbitrary-shaped top plate, a spacer (top) for contacting the bracket (upper) and lubricating, and a bracket (lower) for contacting the spacer (upper) and fixing an arbitrary-shaped bottom plate A spacer (lower) that is in contact with the bracket (lower) for lubrication, a washer that is in contact with the spacer (lower), a spring that presses the washer against the spacer (lower), the spring and the bracket (lower). A rotation mechanism for a video device, comprising: a cylinder disposed between the cylinder and a screw for fixing the spring. The rotating mechanism according to claim 1, wherein the lubrication surfaces of the spacer (upper), the bracket (upper) in contact with the spacer (upper), and the bracket (lower) have a conical shape. 3. The rotating mechanism according to claim 1, wherein the spacer (upper) and the spacer (lower) are made of a lubricating resin material such as POM, PA, or ABS. The rotating mechanism according to claim 1, wherein a part of the spacer (upper) is cut. The rotation mechanism according to claim 1, further comprising: a stopper member provided upright from the bracket (top); and a contact member provided on the bracket (bottom) to contact the stopper member.

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