JPS626767Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rotatable support stand on which a television receiver, etc. is placed, and in particular, a rotating device for rotating a top plate that supports the television receiver, etc. on which it is placed. The present invention proposes a rotary support base in which a top plate is rotated by a built-in rotary device that is controlled by a remote control signal.

The best image is obtained when the screen of a television receiver is viewed from the front, and it is therefore desirable that the screen of the television receiver always be oriented so that it faces directly toward the viewer. Further, there are cases where it is necessary to temporarily change the direction of the screen of a television receiver, depending on the condition of the light rays on the screen, the presence of multiple viewers, etc. For this reason,
A rotatable support is used, the television receiver is placed on the support, and the screen of the television receiver is turned in the required direction by rotating the support. There is.

The present invention provides that, in a rotary support stand on which such a television receiver, etc. is placed, the top plate that supports the placed object can not only be manually rotated directly, but also separated by a remote control signal. Provide a device that can be rotated from any position, so that when a television receiver is mounted, the viewer, etc. can change the orientation of the screen of the television receiver by remote control. It is intended to provide convenience. Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example in which the rotary support base according to the present invention is applied as a base for a television receiver. 1 is an example of a rotating support base according to the present invention, and a fixed part 2
and a rotatably arranged top plate part 3. Legs 4 are attached to the fixed part 2 as required, and a television receiver 5 is placed on the top plate part 3. The rotation support base 1 has a built-in rotation mechanism for rotating the top plate 3, a motor for rotating this rotation mechanism, and a motor drive circuit for driving this motor, and the motor drive circuit is connected remotely. The motor is driven by the control signal.
Reference numeral 6 designates a window section from which the remote control signal receiving section of the motor drive circuit section faces. Receive remote control signals from. As a result, the viewer of the television receiver 5 can watch the remote control signal transmitter 7 from a remote location.
By operating and sending a remote control signal, the top plate section 3 can be rotated in either the left or right direction, and the screen of the television receiver 5 can be directed in a desired direction.

FIG. 2 shows an example of the above-mentioned motor drive circuit section and remote control signal transmitter. The remote control signal transmitter 7 consists of a control signal generation circuit 8 and a transmission section 9, and the control signal generation circuit 8 selectively generates two types of control signals for rotating the above-mentioned motors in mutually opposite directions, for example. The transmitter 9 includes, for example, an infrared light emitting diode, modulates its light emission with one of these control signals, and sends out the modulated infrared rays 10 as a remote control signal. The motor drive circuit section 11 includes a remote control signal receiving section 12 , an amplifier circuit 13 , a decoder 14 , and a motor control circuit 1 facing the window section 6 formed in the top plate section 3 .
5 are connected in series, and two outputs of the motor control circuit 15 are connected to the motor 18 via limit switches 16 and 17, respectively. The remote control signal receiving unit 12, for example,
It includes a phototransistor and receives modulated infrared rays 10 from the transmitter 9 to demodulate a control signal. The demodulated control signal is amplified by an amplifier circuit 13 and supplied to a decoder 14. The decoder 14 has two control outputs Sr and Sl depending on the type of control signal.
output to each output terminal. Motor control circuit 15 receives these control outputs from decoder 14.
In response to Sr or Sl, a control current Ir for rotating the motor 18 in one direction or a control current Il for rotating the motor 18 in the opposite direction is generated and supplied to the motor 18 via the limit switch 16 or 17. Then, it is rotated in the direction according to the control current Ir or Il. Limit switches 16 and 17 are motor 1
This is to limit the rotation of the top plate part 3 which is rotated in the left or right direction by the rotation mechanism part rotated by the rotation mechanism part 8, and the top plate part 3 is rotated by a predetermined maximum angle. is turned off and motor 1
The control current Ir or Il to the motor 18 is cut off.
The rotation of the rotation mechanism is stopped and the rotation of the rotation mechanism is restricted. In this case, for example, a limit switch 1 is connected to the motor 18.
Even if the control current Ir is supplied through the limit switch 6 and the top plate 3 is rotated to the right by the maximum angle, and the limit switch 16 is turned off and stopped, the limit switch 1
7 is in the on state, so the control current is applied to the motor.
If Il is supplied, the top plate portion 3 can be rotated to the left. Even when the top plate portion 3 is rotated to the left by the maximum angle and then stopped, it can be similarly rotated to the right.

In this example, the remote control signal receiving section 12 is provided on the top plate section 3, but it may be provided on other parts of the rotary support base 1. A remote control signal receiving section provided in the receiver for controlling power on/off operations, channel selection operations, volume adjustment operations, etc., using remote control signals may also be used.

FIGS. 3 and 4 show the structure of an example of a rotary support table according to the present invention. The fixing portion 2 includes a bottom plate 19 formed in the shape of a circular dish and having a hole in the center, and bushings 20 fixed to the bottom plate 19 in correspondence with the center hole. The bottom plate 19 is attached to a reinforcing plate 4' that supports the legs 4, if necessary. The bushing 20 has a bearing 2 at one end of the connecting shaft 21.
A worm shaft 21 is rotatably inserted through the connecting shaft 21, and a worm shaft 21 is rotatably inserted through the connecting shaft 21.
A wheel 23 is fixed. The bottom plate 19 has a worm 2 that engages with this worm wheel 23.
4 is rotatable by a bearing 25,
installed. The worm wheel 23 and the worm 24 constitute the main part of the rotation mechanism for rotating the top plate 3, and the reduction ratio by the worm 24 and the worm wheel 23 is, for example, 1/100. It is said that The shaft of the worm 24 is also connected to the bottom plate 1 via a coupling device 26.
It is coupled to a motor 18 attached to 9. Furthermore, the bottom plate 19 includes a motor drive circuit section 1.
1 is attached.

On the other hand, the top plate portion 3 includes a top plate 27 formed in a polygonal shape and having a central hole, a bushing 28 that is fixed to the center hole of the top plate 27 and forms a cylindrical part that protrudes from the bottom side of the top plate 27; and a decorative plate 29 fixed to the lower peripheral edge of the top plate 27. Eight roller legs 30 extend from the bottom surface of the top plate 27 toward the bottom plate 19 of the fixed part 2, and each roller 31
The top plate 27 is in contact with the top surface of the bottom plate 19 in a direction that allows it to rotate along the circumference of the bottom plate 19.
supporting. Further, the other end of the connecting shaft 21 is rotatably inserted through the bushing 28 via a bearing 32. Thereby, the top plate part 3 can be rotated with respect to the fixed part 2, and the top plate part 3 can be rotated relative to the fixed part 2.
The load applied to 7 is transmitted to the bottom plate 19 of the fixed part 2 in a distributed manner by the eight roller legs 30, and is not transmitted to the connecting shaft 21 portion.

Furthermore, the inner peripheral surface of the annular protrusion that protrudes toward the top plate 3 side along the connection shaft 21 provided on the worm wheel 23 fixed to the connection shaft 21 and the top plate 3
A rubber ring 33 serving as an engaging member is interposed between the bushing 28 and the outer circumferential surface of the bushing 28 . The rubber ring 33 transmits the rotation of the worm wheel 23 to the bushing 28, causing the top plate 3 to rotate. That is, the motor drive circuit section 11
is controlled by a remote control signal to motor 18
When the motor 18 is rotated, the worm 24 rotates, and the worm 24 that engages with it rotates.
The wheel 23 is rotated with a predetermined reduction ratio, and the rotation is transmitted to the bushing 28 of the top plate 3 by the rubber ring 33, so that the top plate 3 is rotated. In this case, when the top plate 3 is in an overloaded state, such as when an excessive load is applied, the rubber ring 33 may "slip" against the bushing 28 or the worm wheel 23, causing the worm wheel 23 to rotate. This prevents the motion from being transmitted to the bushing 28, and serves as a protection device against overload of the rotating mechanism, the main components of which are the worm wheel 23 and the worm 24. Further, the top plate part 3 can be manually rotated directly with respect to the fixed part 2, but even when the top plate part 3 is manually rotated, the rubber ring 33 is between the rubber ring 33 and the bushing 28. "slip" occurs, allowing the top plate portion 3 to rotate independently. In the worm gear mechanism, rotation is transmitted from the worm to the worm wheel, but not from the worm wheel to the worm. Therefore, when the top plate part 3 is manually rotated, the worm wheel 23 cannot transmit the rotation to the worm 24 and rotate, so that an overload condition occurs, and the rubber ring 33 is rotated. This causes "slippage" between the bushing 28 and the bushing 28. in this way,
The rubber ring 33, which serves as an engagement member, transmits the rotation of the rotating mechanism section to the top plate section 3, causing the top plate section 3 to rotate, and also causes "slip" in an overload state, causing the rotation mechanism section to rotate. It serves the important function of providing protection and allowing the top plate section 3 to be rotated manually or the like independently, independently of the rotation mechanism section.

Next, 34 and 35 are stoppers, and the fixed part 2
When the top plate 3 rotates, it engages with a locking part 36 protruding from the lower surface of the top plate 27 to stop the top plate 3 from rotating in the left-right direction. The distance between these stoppers 34 and 35 is selected so that the top plate 3 can rotate left and right within an angle range of 60 degrees, for example, with the connection shaft 21 as the center of rotation. Also,
Limit switches 16 and 17, which constitute a part of the motor drive circuit section 11, are arranged at the positions of the stoppers 34 and 35, respectively, and when the locking section 36 of the top plate section 3 engages with the stopper 34 or 35, At this time, the limit switch 16 or 17 is turned off, stopping the drive current to the motor 18 that rotates the rotating mechanism section, and cutting off the supply of rotational force to the top plate section 3. As a result, when the top plate part 3 is continuously rotated, it is automatically stopped when it is rotated by a predetermined angle, for example, a maximum angle of 60 degrees, either to the left or to the right. Become.

As explained above, in the rotating support base according to the present invention, the top plate part that supports the placed object can be rotated directly by hand or by remote control in both left and right directions. It is suitable as a rotating table for a television receiver. When placing a television receiver on the rotating support base according to the present invention, in addition to controlling various functions of the television receiver, the viewer can also control various functions of the television receiver.
The orientation of the screen can also be controlled remotely, which is extremely convenient. In addition, when the rotation mechanism that rotates the top plate is overloaded during remote control, the rotation mechanism is protected by allowing it to essentially idle, and the top plate can be rotated manually. When the top plate is rotated, the top plate can be rotated independently independently of the rotation mechanism, so it is extremely rare for any parts to malfunction or be damaged due to the rotation of the top plate.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of the rotary support base according to the present invention applied as a stand for a television receiver, and FIG. 2 is a motor drive circuit built into the rotary support base according to the present invention. A block connection diagram showing one example, FIG. 3 is a partially exploded plan view showing an example of the rotating support base according to the present invention, and FIG.
FIG. In the figure, 1 is a rotating support base, 2 is a fixed part, 3 is a top plate part, 7 is a remote control signal transmitter, 11 is a motor drive circuit part, 16 and 17 are limit switches, 18 is a motor, 19 is a bottom plate, 21 is a connecting shaft, 23 is a worm wheel, 24 is a worm, 27 is a top plate, 30 is a roller leg, 31 is a roller, 33 is a rubber ring (engaging member), and 34 and 35 are stoppers.

Claims (1)

[Scope of utility model registration request] a fixed part, a connecting shaft rotatably planted in the center of the fixed part, rotatably engaged with the connecting shaft,
a top plate portion including a cylindrical portion protruding in a direction along the connection axis; and a top plate portion extending downwardly from a plurality of locations on the lower surface side toward the fixed portion;
a plurality of roller legs each having a roller that contacts the fixed part; a rotation mechanism part including a worm wheel fixed to the connecting shaft and a worm meshing with the worm wheel;
a motor that rotates the worm; a motor drive circuit that drives the motor under the control of a remote control signal; and an annular protrusion provided on the worm wheel that protrudes in a direction along the connection shaft. The worm wheel is interposed between mutually opposing parts in the radial direction of the connecting shaft with the cylindrical part of the top plate, and transmits the rotation of the worm wheel to the top plate, and also allows the worm wheel to rotate independently of the top plate. A rotary support base comprising: an elastic engagement member that also allows rotation of the member;