KR19980014222A - Monitor automatic screen angle adjuster - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a monitor automatic screen angle adjusting apparatus for a table-type personal computer in which a table and a PC are integrally formed.

Such a table-type PC has a main body, a monitor, a keyboard, and the like inside the table, and the monitor again receives the monitor inside the monitor case having the hinge shaft; An operation shaft 23 installed at a rear lower end of the monitor case; A drive cam (14) fixed on the operation shaft (23); A serration serration 24 mounted on a part of the outer circumferential surface of the drive cam 14; A stopper (25) engaged with the serration (24) during forward movement; A solenoid (18) connected to the stopper (25); A servo motor 15 connected to the operation shaft 23; A pinion gear 16 and a driven gear 17 provided between the servo motor 15 and the operation shaft 23; An encoder 20 installed between the servo motor 15 and the pinion gear 16; And a light emitting diode (21) and a light receiving diode (22) provided at predetermined intervals from both sides of the encoder (20).

Accordingly, the present invention has an effect of meeting the future PC use environment and enhancing the convenience of the PC by adjusting the screen angle of the monitor according to the user's physical condition in the wall-mounted type or desk-stored type PC.

Description

Monitor automatic screen angle adjuster

The present invention relates to a table-type personal computer, and more particularly, to a table-type personal computer which uses a control function of an external device of a table-type personal computer in which a table and a PC are integrally formed and drives a predetermined monitor rotating device to adjust the monitor to a convenient angle To a monitor screen inclination angle adjusting apparatus of a table type PC.

Generally, a PC is composed of a main body having various function boards using a microprocessor, a keyboard and a mouse connected to the main input port, and a monitor connected to the main output port.

Such a PC requires a relatively large space because it is installed on a work desk or a separate desk, and as the PC is developed into an environment in which the PC becomes a necessity of life in the future, an installation method that maximizes space utilization is required.

In recent years, as the wall-mounted TV has appeared, the monitor of the PC can be installed using the wall surface or housed inside the desk, and the use environment of the PC maximizing the space utilization can become popular.

Such a wall-mountable or desk-restored PC has the advantage of narrowing the space as described above, but has a disadvantage in that it is difficult to change the monitor to an appropriate position according to the viewing angle by the narrow and airtight structure.

The object of the present invention is to provide a table-type PC monitor angle adjusting device for adjusting a screen angle of a monitor in accordance with a physical condition of a user in a wall-mounted or desk- do.

At this time, the screen position is adjusted to an arbitrary angle range by operating a predetermined key, and the main body of the PC and the keyboard serving as the input device are used as the control means.

The drawings show one embodiment of the present invention,

Fig. 1 is a perspective view showing a table-type PC partially cut and disassembled,

Fig. 2 is a perspective view showing the driving means applied to Fig. 1,

Fig. 3 is a block diagram showing input / output wiring for control of Fig. 2,

4 is a flowchart showing an operation procedure.

Description of the Related Art [0002]

1: Table 2: Drawer 3: Clear glass plate

10: main body 11: monitor 12: keyboard

13: Monitor case 14: Driving cam 15: Servo motor

16: pinion gear 17: driven gear 18: solenoid

19: Hinge shaft 21: Light emitting diode 22: Light receiving diode

23: operating shaft 24: serration 25: stopper

31: first key 31: second key ST1 to ST11: operating state

A monitor 11 and a keyboard 12 are provided in the table of the present invention and the monitor 11 is mounted inside a monitor case 13 having a hinge shaft 19 A table PC for receiving again; An operation shaft 23 installed inside the table 1 in parallel with the hinge shaft 19 to the rear lower end of the monitor case 13; A drive cam (14) fixed on the operation shaft (23) and having an outer circumferential surface of a predetermined shape; A serration (24) mounted on a part of an outer circumferential surface of the drive cam (14) and formed in a serrated shape; A stopper (25) linearly reciprocating and engaged with the serration (24) during forward movement; A solenoid (18) connected to the stopper (25) and providing operating force; A servomotor (15) connected to the operating shaft (23) and rotated in normal and reverse directions to provide a rotating force; A pinion gear 16 and a driven gear 17 for transmitting power between the servo motor 15 and the operation shaft 23; An encoder 20 installed between the servo motor 15 and the pinion gear 16; And a light-receiving diode (21) and a light-receiving diode (22) installed at a predetermined distance from both sides of the encoder (20) and detecting the rotation state thereof. do.

At this time, when the first key 31 of the keyboard 12 is pressed, the main body 10 counts the number of pulses by the encoder 20 and drives the servo motor 15 until a predetermined reference value is reached. 2 key 32 is depressed, the number of pulses by the encoder 20 is counted and the servo motor 15 is driven until a predetermined reference value is reached.

[Example]

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a perspective view showing a partly cut-away and disassembled table-type PC.

The monitor type angle adjusting device of the present invention includes a main body 10, a monitor 11, a keyboard 12, and the like. Etc., a table (1), a monitor case (13), a driving means, and the like.

A table (1) is provided with a drawer (2) and a transparent glass plate (3) on the front and top surfaces, respectively. The main body 10 and the monitor 11 of the table 1 are installed and the keyboard 12 is installed in the drawer 2. [

The monitor (11) is installed inside a monitor case (13) capable of rotating and reciprocating about a hinge shaft (19). The monitor case 13 is of a box type that accommodates the monitor 11 in a removable manner and has a lower end fixed to the table 1 by a hinge shaft 19. [

The monitor case 13 has a groove having the same shape as that of the outline curve of the drive cam 14 so as to be in sliding contact with the drive cam 14 provided on the operation shaft 23. At least one groove is formed on both sides of the monitor case 13.

At this time, the hinge shaft 19 is formed at a position where the center of gravity of the whole of the monitor 11 and the monitor case 13 is not spaced apart on a line vertically downward, It is desirable to minimize the torque.

Fig. 2 is a perspective view showing the driving means applied to Fig. 1. Fig.

The present invention fixes the drive cam 14 and the driven gear 17 to the operation shaft 23 while the drive means is connected to the driven gear 17 and the stop means is connected to the drive cam 14. [ The driving means includes a driven gear 17, a pinion gear 16, a servo motor 15 and the like, and the stop means includes a solenoid 18, a serration 24, a stopper 25, and the like.

The drive cam 14 is formed with a sufficient width to move the rear end of the monitor case 13 (Fig. 1) up and down with the hinge shaft 19 as a rotation center. It may have a single cylinder structure as shown in the drawing, or it may be divided into two parts.

This is because the servomotor 15 controlled by forward / reverse rotation is used as a power source because it is easy to configure the output port on the main body 10 (Fig. 1) of the PC and is excellent in low speed high load performance.

The serrations 24 mounted on a part of the outer circumferential surface of the drive cam 14 are formed in a saw tooth shape and can be engaged with the stopper 25 which is linearly reciprocated by the solenoid 18. That is, when the solenoid 18 is off, the stopper 25 can be engaged with the serration 24. That is, when the solenoid 18 is turned off, the stopper 25 is engaged with the serration 24 to stop the drive cam 14, and when the solenoid 18 is turned on, the stopper 25 comes into contact with the serration 24, So that the rotation of the drive cam 14 is not restrained.

Since the stop means using the serration 24 and the stopper 25 has a function of preventing the backward flow of the drive cam 14, it is possible to prevent the monitor 11 from falling down to its own weight when the servo motor 15 does not operate .

An encoder 20 provided between the servo motor 15 and the pinion gear 16 is provided. The encoder 20 is formed by forming a plurality of slats at uniform intervals on a disk of a thin thickness, and it is also possible to provide the actuating shaft 23 instead of the above position.

A light emitting diode 21 and a light receiving diode 22 are provided with a predetermined distance from both sides of the encoder 20 to detect the rotation state of the rotary shaft of the servo motor 15. [

Fig. 3 is a block diagram showing the input / output wiring for the control of Fig.

The light receiving diode 22 is input through the encoder 20 to the first key 31 and the second key 32 of the keyboard 12 in the main body 10 (see FIG. 1) To be input by the user.

The servo motor 15 and the solenoid 18 are connected to the drive section of the microcomputer and the light emitting diode 21 is directly connected to the output port (not shown) and controlled by the microcomputer.

The first key and the second key are programmed so that the microcomputer recognizes the inclination angle of the screen of the monitor 11 (FIG. 1) as an instruction to increase or decrease, respectively. These input keys may be recognized by a hardware method in which a specific key for implementing the operation of the present invention is installed on the keyboard 12, or may be recognized by a combination of conventional keys (for example, a direction key, a control key, It can also be recognized.

When the first key 31 or the second key 32 is pressed, the microcomputer turns on the light emitting diode 21 and rotates the servomotor 15 and transmits it to the light receiving diode 22 through the slit of the encoder 20 And the number of pulses is counted.

Fig. 4 is a flowchart showing the operation sequence.

Reference numerals quoted below refer to Figs. 1 to 3.

When the power switch (not shown) is turned on in the PC of the present invention at step ST1, the program is started.

In step ST2, it is determined whether the first key is pressed. If y (yes), the process goes to step ST3, and if n (i.e., no), the process goes to step ST6.

The solenoid 18 is turned on in step ST3 so that the stopper 25 is retracted and then the output for rotating the servomotor 15 in one direction (for example, normal rotation) is maintained to increase the inclination angle of the monitor 11 .

The number of pulses generated by the encoder 20 is counted while the servo motor 15 rotates in step ST4.

In step ST5, it is judged whether or not the counted number of pulses reaches the reference value. At this time, if YES, go to step ST10, and if n, go to step ST2 and continue to rotate the servomotor 15 to count the number of pulses.

On the other hand, if the first key 31 has not been pressed in step ST2, a route to step ST6 is selected.

If it is determined that the second key 32 is pressed in step ST6, the process goes to step ST7. If it is n, the process goes to step ST2 again to check the input status.

The solenoid 18 is turned on in step ST7 so that the stopper 25 is retracted and then the output for rotating the servo motor 15 in one direction (for example, reverse rotation) is maintained to reduce the inclination angle of the monitor 11 .

The number of pulses generated by the encoder 20 is counted while the servo motor 15 rotates in step ST8.

In step ST9, it is judged whether or not the counted number of pulses reaches the reference value. At this time, if YES, go to step ST10, and if n, go to step ST7 and continue to rotate the servomotor 15 to count the number of pulses.

In step ST10, the output to the motor is turned off to stop the motor, and the output to the solenoid 18 is turned off to advance the stirrer 25.

When such a series of operations is completed, the program ends in step ST11.

The inclination angle of the monitor 11 is increased while the first key 31 on the keyboard 12 is pressed and the number of pulses of the light receiving diode 22 by the encoder 20 reaches the reference value, When the second key 32 is depressed, the inclination angle of the monitor 11 decreases while the pulse number of the light receiving diode 22 reaches the reference value, thereby changing the screen angle.

This reference value is arbitrarily stored as the value of the screen angle to be taken by the user, and it can be stored in the ROM of the main body before shipment from the factory, or can be adjusted in advance by using the dip switch position.

In the meantime, although the case where the above-mentioned wall-mounted type or desk-restored type PC is applied to the latter case has been described through the above embodiments, the monitor angle adjusting device of the table type PC of the present invention can be easily applied to a wall- can do.

As described above, the table-type PC monitor angle adjusting device adjusts the screen angle of the monitor according to the user's body conditions in the wall-mounted type or desk-stored type PC to meet the future PC use environment, .

Although the present invention has been shown and described with respect to certain preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as set forth in the following claims Those skilled in the art will readily know what is known in the art.

Claims (2)

A table-type personal computer having a main body, a monitor, a keyboard, and the like inside the table, and the monitor being housed in a monitor case having a hinge shaft again; An operation shaft 23 installed inside the table 1 in parallel with the hinge shaft 19 to the rear lower end of the monitor case 13; A drive cam (14) fixed on the operation shaft (23) and having an outer circumferential surface of a predetermined shape; A serration (24) mounted on a part of an outer circumferential surface of the drive cam (14) and formed in a serrated shape; A stopper (25) linearly reciprocating and engaged with the serration (24) during forward movement; A solenoid (18) connected to the stopper (25) and providing operating force; A servomotor (15) connected to the operating shaft (23) and rotated in normal and reverse directions to provide a rotating force; A pinion gear 16 and a driven gear 17 for transmitting power between the servo motor 15 and the operation shaft 23; An encoder 20 installed between the servo motor 15 and the pinion gear 16; And And a light receiving diode (21) and a light receiving diode (22) which are installed at predetermined intervals from both sides of the encoder (20) and detect the rotation state of the encoder (20). The apparatus according to claim 1, wherein the main body (10) counts the number of pulses by the encoder (20) when the first key (31) of the keyboard (12) And counts the number of pulses by the encoder (20) when the second key (32) is pressed, and drives the servo motor (15) until a predetermined reference value is reached.