KR100939051B1 - Electronic lecture table - Google Patents

Abstract

PURPOSE: An electronic lecture table is provided, which can maximize convenience of a user and intensify robbery prevention function. CONSTITUTION: An electronic lecture table comprises a box type table body; an upper plate(34) connected to the table upper body surface; an upper plate cover(50) which is connected to the upper plate cover groove to be slid; a screw thread(303) which is formed in the lower surface of the upper plate cover; a motor cogwheel groove formed in the upper plate depression; a motor cogwheel(305) formed in the lower part of the upper plate depression; an upper plate motor connected to the motor cogwheel; an electric cylinder elevating a monitor; an upper plate cover position detecting sensor(54) sensing the location of the upper plate cover; and a controller.

Description

Electronic lecture table {Electronic lecture table}

The present invention relates to a teaching table, and more particularly to an electronic lecture table.

In the current Internet environment, the teaching methods are also different, and the lectures are being held while showing the Internet connection screen on the large screen by the projector. Also, when the instructor writes on the large screen with the electronic pen, the writing is written. Devices were released so that the content was printed on the computer screen of the student.

In addition, an electronic lecture table has been developed in which various multimedia devices such as video and DVD are embedded in a table in a conference room or a lecture room. However, several inconveniences have been found in the conventional electronic lecture table during use. In addition, there is a high risk of theft and damage of various expensive multimedia devices embedded in the electronic lecture table.

Accordingly, the present invention has been made in view of the above-described prior art, and the technical problem of the present invention is to provide an electronic lecture table capable of maximizing user convenience and enhancing an anti-theft function.

Electronic lecture table according to the present invention for solving the above problems, the table body of the housing; A monitor seating groove coupled to the table body upper surface and accommodating a top plate recess formed from a central portion of the upper surface to a side surface, an upper plate cover groove formed on upper and lower sides of the recessed portion, and a monitor formed on the recessed portion of the central portion of the upper surface; Including a top plate; An upper plate cover coupled to the upper plate cover groove to open and close the monitor seating groove; Upper cover gear threads formed at a position adjacent to the upper cover cover groove on a lower surface of the upper cover; A motor gear groove formed at a position overlapping with the top cover gear screw thread at the top recess; A top gear motor positioned below the top recess and having a screw thread engaged with the top cover gear screw thread through the motor gear groove; a top motor connected to the motor gear wheel; A monitor seated in the monitor seating groove, the monitor being coupled by a hinge that provides a pivot reference point at a predetermined portion of an inner surface of the monitor seating groove of the upper plate; An electric cylinder coupled to a bracket fixed to an upper end of the lower surface of the monitor and lifting and lowering the monitor; A top cover position detection sensor positioned at a predetermined portion of the top plate and sensing a position of the top cover; And a controller configured to determine whether the top cover is opened and to generate a control signal for automatically raising the monitor upward by a predetermined angle when the top cover is opened.

The electronic lecture table may further include a monitor position detecting sensor positioned at a predetermined region of an inner surface of the monitor seating groove and detecting a position of the monitor. The monitor position sensing sensor may be a micro switch, in which case the monitor is turned on the monitor seating groove to turn on the micro switch.

The electronic lecture table may further include a metal plate positioned on a lower surface predetermined portion of the upper plate cover corresponding to the upper plate cover position sensor, and in this case, the upper plate cover position sensor may have a voltage value by the metal plate. The sensor may be variable.

The upper plate includes a rising operation button for further raising the monitor in accordance with a user's key, a lowering operation button for lowering the monitor, a stop button for stopping the movement of the monitor, the electric cylinder, and the upper plate motor. It may further include a key panel having a power button for switching the power supply of the.

The electronic lecture table may include at least two fixing frames positioned at both sides of the table body to accommodate and fix the electronic equipment; And a main driving part fixed between the fixed frames by a coupling screw to the fixed frame and including a main power switch for generating an operation signal for switching power control. In this case, the electronic lecture table is located at a predetermined portion of the upper surface of the monitor seating groove, and detects the turn-off of the main power switch and always corrects the door lock of the top plate cover.常 時) may further include a closed locking solenoid.

The electronic lecture table operates the electric cylinder according to whether the main power switch is turned on and whether the top cover is opened, and whether the top cover is closed and the turn off of the main power switch. The memory may further include a memory storing a program for controlling the operation of the electric cylinder and the operation of the locking solenoid.

The controller controls the monitor to rise by operating the electric cylinder after opening the top plate by automatically operating the top plate motor according to whether the main power switch is turned on. A manual key operation signal of the key panel is applied to perform additional drive control of the electric cylinder, and the monitor is lowered by operating the electric cylinder according to whether the main power switch is turned off. Check the lowering of the monitor, operate the top plate motor to close the top plate, release the operation of the electric cylinder and the locking solenoid, and control the top plate cover to be corrected by the locking solenoid. have.

The electronic lecture table may further include at least one heat dissipation hole formed in at least one of a wall surface and a bottom of the table body.

The electronic lecture table has a rectangular frame shape, overlaps the fixed frame and covers the coupling screw coupled to the fixed frame, but opens the front part of the main drive unit, and is an anti-theft frame fixed to the table body by a locking device. It may further include. The anti-theft frame having a rectangular frame shape has at least one opening formed on one surface of the top, bottom, left and right surfaces of the anti-theft frame, and at least one protrusion formed on a surface facing the one surface. It may further include. The locking device has a locking rod movable up and down by an internal coil spring, and the locking device is coupled to the table body such that the locking rod is inserted into the opening of the anti-theft frame, and the protrusion is connected to the table body. The anti-theft frame may be fixed by being inserted into a hole formed in a predetermined portion.

In one embodiment of the present invention, the table body has a top, one top and the other facing the top, the top has a '┛' or '┃' shaped cross section, the other top is It has a cross section of the '┓' shape bent inwardly to have a surface in contact with the top plate, the end of the top cover adjacent to the top may have a '┏' shaped cross section. At this time, the electronic lecture table is coupled to a predetermined portion of the upper plate adjacent to the other top, the locking device having a lock rod for fixing the end of the other top of the '┓' shape; An upper plate connecting rod coupled to a predetermined portion of the upper plate; And a top plate-table body coupling screw coupling the daily end to the top plate connecting rod, wherein the screw head is covered by the end of the top plate cover.

The electronic lecture table may further include a keyboard accommodating drawer that is located at the upper front portion of the table body and accommodates the keyboard.

The electronic lecture table according to the present invention, when the main power switch is turned on, the top cover is automatically opened, and when the opening of the top cover is completed, the monitor is automatically raised so that the user's key is very high. Additional manual lifting and lowering is possible for the convenience. In addition, when the power is cut off, the monitor automatically lowers to its original state, and it is safely checked whether the monitor automatically lowers to its original state, and the top cover closes automatically. Since the door lock is set on the top cover, it is possible to prevent the loss of the monitor and various devices.

In addition, when the power is cut off, the top plate cannot be separated from the table body by the locking device coupled to the top plate and the top plate-table body coupling screw whose screw head is covered by the end of the top cover. Can be prevented. In addition, it is possible to prevent theft of electronic equipment, etc. by the anti-theft frame in the form of a rectangular picture frame covering the coupling screws of the fixed frame for fixing the electronic equipment.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed subject matter is thorough and complete, and that the scope of the invention to those skilled in the art will fully convey. In the drawings, the thicknesses and sizes of components are exaggerated for clarity. Like numbers refer to like elements throughout.

1 is a perspective view showing an electronic lecture table according to an embodiment of the present invention. FIG. 2 is an exploded perspective view illustrating a mounting state of the anti-theft frame when the top cover and the door are opened in the electromagnetic steel table of FIG. 1. Figure 3 is an exploded perspective view of the main portion showing the mounting state of the top plate cover and the top plate position detection sensor of the electronic lecture table according to an embodiment of the present invention.

1 to 3, the electronic steel table 30 according to an embodiment of the present invention includes a table body 32 of a housing and an upper plate 34 coupled to an upper surface of the table body 32. . An upper plate depression 33 is formed from a central portion of the upper surface of the upper plate 34 to one side thereof. Upper and lower cover grooves 35 are formed on upper and lower inner surfaces of the upper plate recess 33. A monitor seating groove 38 for receiving a monitor is formed in the upper plate recess 33 at the center of the upper surface. The top plate cover 50 is slidably coupled to the top plate cover groove 35 and opens and closes the monitor seating groove 36. Guide rails 52 are formed on the side surfaces of the upper cover 5. The top cover 50 is automatically opened and closed. This is described in detail below with reference to FIGS. 3, 4A and 4B.

4A is a partial cross-sectional view taken along the line A-A of FIG. 2 to show the driving principle of the upper plate. 4B is a partial cross-sectional view taken along the line B-B in FIG. 2 to illustrate the driving principle of the upper plate. 4A and 4B, the intersection of the A-A line and the B-B line overlaps the motor gear 305 vertically.

2, 3, 4A and 4B, the top cover gear threads 303 are formed along the bottom surface of the upper side of the top cover 50. The upper cover gear thread 303 may be formed along the lower surface of the lower side of the upper cover 50. The motor gear groove 306 is formed at a position overlapping with the upper cover gear screw thread 303 in the upper plate depression 33. A motor cog wheel 305 is positioned below the upper plate depression 33. The thread of the motor gearwheel 305 is engaged with the upper cover gear thread 303 by exposing a portion of the motor gearwheel groove 306 to the outside of the upper part. The motor gearwheel 305 is connected to the upper plate motor 309 coupled to the central rotation shaft 307. The upper plate motor 309 may be, for example, a direct current deceleration motor. The motor gearwheel 305 may rotate about the rotation shaft 307 by the upper plate motor, and the upper plate cover gear screw thread 303 is engaged with the upper plate cover as the motor gear 305 rotates. 50 moves left and right to open and close. When the upper cover gear threads 303 are formed along the lower surface of the lower side of the upper cover 50, the motor gear groove 306, the motor gear 305, and the upper motor 309. ) May also be disposed to be adjacent to the lower surface of the lower side of the top cover 50. The electrical signal for driving the upper plate motor 309 is given by a controller to be described later. The upper plate cover 50 is opened and closed automatically, but may be opened manually in case of failure of the upper plate motor 309.

On the other hand, when the top cover 50 is automatically opened on the same principle as above, the top cover position detection sensor 54 detects and confirms this. Specifically, referring to FIG. 3, a metal plate 56 is attached to an upper surface predetermined portion of the upper plate depression 33, and a position corresponding to the metal plate 56 is defined at a lower surface predetermined portion of the upper plate cover 50. An upper wave cover position detection sensor 54 is attached. The top cover position detecting sensor 54 is a sensor for determining whether the top cover 50 is open, for example, a sensor for determining an open state of the top cover 50 with a voltage value changed by magnetization. to be. The upper cover position detecting sensor 54 may be a sensor in which an output voltage value is changed by the adhesion of the metal plate 56 to an upper portion thereof. The top cover position detecting sensor 54 may be various types of sensors such as a contact sensor and an infrared sensor, in addition to a sensor for detecting a position state of the metal plate 56.

Referring again to FIGS. 1 and 2, a mouse seating groove 46 for seating the mouse is formed in a predetermined portion of the upper plate 34. The upper plate 34 of the upper portion of the mouse seating groove 46 has a power button 42a for generating a power on / off operation signal and a rising operation button 42b for performing manual key input for raising and lowering the monitor, and descending. A key panel 42 composed of an operation button 42c and a stop button 42d is provided. In addition, the microphone 40 is inserted into the upper surface predetermined portion of the upper plate 34. A predetermined groove at the bottom of the upper plate 34 is formed with a receiving groove 53 for accommodating chalk, writing implements, a laser pointer, an indicator rod, and the like at a lower portion of the upper plate cover 50. Protruding hook portion 51 that can be supported so as not to slide is formed.

Subsequently, the upper front portion of the table body 32 below the upper plate 34 is provided with a keyboard accommodating drawer 58 for accommodating the keyboard 200 and a drawer 60 for accommodating other items. . The drawer key hole 61 is installed in the drawer 60. One or more heat dissipation holes 45 are formed on the side and / or bottom surface of the table body 32 for dissipating heat emitted from various electronic devices stored in the table body 32.

Subsequently, a door 63 is installed in the table body 32 under the drawer 60. When the door 63 is opened, the equipment body 150 and 160 is accommodated in the table body 32 to accommodate various electronic devices 160 necessary for lectures such as the main driving unit 150, an audio device, an imaging device, and a computer. Fixing frame 140 for engaging and fixing them by a coupling screw is installed in at least four positions at least on both sides, preferably in the front and rear and both sides. The main drive unit 150 is provided with a main power switch 64 for key operation and power drive for various electronic equipment. The main power switch 64 may have a form that is operated when the user inserts the key into the key groove and turns it. In addition, various terminals such as a LAN line connecting terminal, an external power input terminal, an acoustic wire input terminal, and the like may be installed in the main driver 150.

Since the main driving unit 150 and the electronic device 160 are fixed to the fixing frame 140 by a coupling screw, the main driving unit 150 and the electronic device 160 may be easily stolen by loosening only the coupling screw. Can be. In order to prevent this, the electronic lecture table 30 according to the present invention further includes an anti-theft frame 100. The anti-theft frame 100 has a rectangular frame shape, overlapped with the coupling screw coupled to the fixed frame 140, but opens the front portion of the main drive unit 150 and the electronic device 160. An opening 102 is formed on an upper surface of the anti-theft frame 100, and a protrusion 104 is formed on a lower surface of the anti-theft frame 100. The protrusion 104 is fitted into the lower plate hole 120 formed in the lower portion of the table body 32. The locking rod of the first locking device 130 coupled to the table body 32 under the drawer 60 is inserted into the opening 102. Thus, the anti-theft frame 100 is fixed to the table body (32). The anti-theft frame 100 may be separated after releasing the first locking device 130 after opening the drawer 60. Therefore, the anti-theft frame 100 cannot be removed without the key of the drawer 60, thereby preventing the electronic device 160 or the like from being stolen.

On the other hand, when the top cover 50 is opened, the top cover position detection sensor 54 detects this, the monitor 38 is automatically raised by the electric cylinder 70 by a predetermined angle. This will be described with reference to FIGS. 5 and 6. 5 is a schematic cross-sectional view taken along line I-I of FIG. 1. 6 is a schematic cross-sectional view of the electric cylinder included in the electronic lecture table according to an embodiment of the present invention.

5 and 6, both lower ends of the monitor 38 are coupled by the monitor seating groove 36 and the hinge shaft 66. The bracket 68 is coupled to the lower end of the monitor 38 through a coupling ring 86 and a rotation pin 72 provided at the upper end of the electric cylinder 70. The electric cylinder 70 is a lifting means of the monitor 38, and includes a cylindrical body 76 having a hollow portion formed therein. Upper and lower ends of the body 76 are provided with limit switches 78 respectively detecting the position of the rod nut 84 which is leaked / inflowed from the inside of the body 76 to the outside and has a screw tab (not shown) formed on an inner circumference thereof. And a bushing 80 for driving stroke adjustment coupled to an outer circumferential predetermined portion of the rod nut 84 to be in contact with the limit switch 78 and axially coupled to the stationary motor 74. Screw bolts 82 fastened to the inner circumferential thread tap (not shown) of the 84 is provided with a screw bolt 82 is arranged on the outer circumference, the upper end of the rod nut 84 is provided with a coupling ring 86 It is done.

In this case, the driving stroke adjusting bushing 80 and the limit switch 78 are factors that determine the degree of withdrawal of the rod nut 84, and the rod nut 84 is spaced apart by the interval between the driving stroke adjusting bushing 80. ) Is withdrawn from the body 76.

The hydraulic cylinder and rack / pinion may be used in the present invention instead of the electric cylinder 70, but the hydraulic cylinder and the rack / pinion, etc. increase the volume of the device, so that the entire device becomes large, thus increasing the table monitor of the present invention. It is not preferable for use.

Thus, when a control signal is applied, the stationary motor 74 of the electric cylinder 70 is rotated in a predetermined direction, the screw bolt 82 is transmitted to rotate the rotational force, the screw bolt 82 ) And the rod nut 84 coupled to and lifted from the body 76 to lift and lower the monitor 38. Since the lower end of the monitor 38 is coupled to the upper plate 34 by the hinge shaft 66, only the upper end of the monitor 38 is lifted.

The position of the monitor 38 is detected by the monitor position sensor 320. This will be described with reference to FIGS. 5, 7A and 7B. 7A and 7B are cross-sectional views illustrating an operating principle of the monitor position sensor of FIG. 5.

5 and 7A, the monitor position sensor 320 is formed at a predetermined portion of the inner surface of the monitor seating groove 36 formed in the upper plate depression 33. Preferably, the monitor position detection sensor 320 is located in a predetermined portion of the inner upper side or the inner left and right sides of the monitor seating groove 36. The monitor position sensor 320 is a micro switch, for example, and includes a body 321, a fixed contact 323, and a movable contact 325. When the upper end of the monitor 38 is raised, the movable contact 325 is detached from the fixed contact 323 and the micro switch is turned off.

On the contrary, as shown in FIG. 7B, when the monitor 38 enters the monitor seating groove 36, the side wall of the monitor 38 pushes the movable contact 325, and the movable contact 325 is fixed to the fixed contact 323. ). This turns the micro switch on. In this way, the micro switch is turned on / off according to the position of the monitor 38, and the on / off signal of the switch enters the controller to be described later.

Meanwhile, referring again to FIG. 3, the electronic lecture table 30 according to the present invention automatically detects a turn off of the main power switch 64 after the top cover 50 is closed. It is provided with a door lock means for correcting the door lock of the top plate cover (50). The door lock means is composed of a constant drawing-type locking solenoid (solenoid 88 in which the solenoid rod is drawn out when the power is cut off), and coupling holes 90a and 90b through which the rod of the locking solenoid 88 is withdrawn. The locking solenoid 88 is formed at one end of the monitor seating groove 36, and the coupling holes 90a and 90b of the upper cover 50 are positioned at positions corresponding to the locking solenoid 88. It is formed in a predetermined portion. The coupling holes 90a and 90b are the first coupling hole 90a into which the locking solenoid 88 is inserted when the upper plate cover 50 is completely opened and the locking solenoid when the upper plate cover 50 is completely closed. It includes a second engaging hole (90b) is inserted (88).

The electronic lecture table 30 includes an additional anti-theft configuration. This will be described with reference to FIG. 8. 8 is a sectional view showing the principal parts taken along the line II-II of FIG. 1.

Referring to FIG. 8, a cross section of one upper end of the table body 32 positioned below the upper cover 50 may have a '┛' or '┃' shape. It has a cross-section of the '┓' shape bent inward to have a surface in contact with the upper plate of the upper end of the opposite side facing the one end. An end portion of the upper cover 50 adjacent to the upper end has a cross section in the shape of a '┏'. The second locking device 132 is installed below the upper plate 34 at a position adjacent to the upper end of the opposite side having a cross-section of the '┓'. The end of the upper end of the opposite side having the '┓' shape by the lock rod of the second locking device 132 is fixed. In addition, the upper plate-table body coupling screw 152 coupled to the upper plate connecting rod 162 coupled to the predetermined portion of the upper plate 34 through the upper end having a '┛' or '┃' shape cross section The top plate 34 is fixed by this. The screw head of the upper plate-table body coupling screw 152 is covered by an end of the upper plate cover 50 having a '┏' shape.

When the main power switch 64 is turned on to apply power to the electronic lecture table 30, the locking solenoid 88 is released and the top cover 50 is opened. The top plate 34 may be separated from the table body 32 after the top plate cover 50 is opened, after the top plate-table body coupling screw 152 is released and the second locking device 132 is released. Can be. Therefore, the top plate 34 cannot be removed without the key for turning on the main power switch 64. As a result, theft of the monitor 38 or the like located below the upper plate 34 can be prevented.

9 is a schematic cross-sectional view of a locking device according to an embodiment of the present invention. The locking devices 130 and 132 disclosed in FIGS. 2, 5 and 8 include a locking device frame 110. The lock rod 112 having the locking groove 112a is inserted into the lock frame 110, but the lock rod 112 is longer than the lock frame 110 so that the lock rod 112 is formed. Both ends of are exposed to the outside. One end of the lock rod 112 is inserted into the first coil spring 15 which is elastically actuated so that the lock rod 12 returns to its original position. An outer upper surface of the locking device frame 110 has a pressing part 114 for releasing the lock when the locking rod 112 is locked, and is caught by the locking groove 112a under the pressing part 114. There is a locking portion 113 which provides a space. In addition, the second coil spring 16 is fastened so that the vertical flow of the locking part 113 is freely performed.

10 is a block diagram illustrating a circuit configuration of an electronic lecture table according to an embodiment of the present invention.

10 is a view showing the overall circuit configuration of the electronic lecture table 30 according to an embodiment of the present invention, referring to the electronic lecture table 30 according to an embodiment of the present invention as described above A key panel comprising a power button 42a for generating a power on / off operation signal and a rising operation button 42b for performing manual key input for raising and lowering the monitor, a lowering operation button 42c, and a stop button 42d ( 42 is provided, the power button 42a is a button for switching the power supply to the reverse motor 74 of the electric cylinder 70, the rising operation button 42b, the lower operation button 42c and 42d are buttons for raising and lowering the monitor and generating a drive stop signal for the electric cylinder 70.

In the electronic lecture table 30 according to an embodiment of the present invention, when the top cover 50 is opened, the monitor 38 is automatically raised by a predetermined length, but the rising operation button ( 42b), the lower operation button 42c, the stop button 42d can be manually raised and lowered by the monitor 38 additionally.

In addition, the electronic lecture table 30 according to an embodiment of the present invention to drive the motor driving unit 92 and the upper plate motor 309 for driving the stationary motor 74 provided in the electric cylinder (70). An upper plate motor driving unit 93 is provided, and a solenoid driving unit 94 for driving the locking solenoid 88 is provided. The top plate motor 309 is automatically opened according to whether the main power switch 64 is turned on, and the top plate cover 50 is opened, and the top plate cover 50 is automatically opened. The electric cylinder 70 is operated, and the operation of the electric cylinder 70 and the locking solenoid 88 depend on whether the top plate cover 50 is closed and whether the main power switch 64 is turned off. There is provided a memory 96 in which control routines are stored in advance for the operation of the "

On the other hand, the electronic lecture table 30 according to an embodiment of the present invention automatically according to whether the main power switch 64 is turned on (Turn On) and whether the top plate cover 50 is opened the electric cylinder ( 70 is operated to control the monitor 38 to be raised, receives the manual key operation signal of the key panel 42 to perform additional driving control of the electric cylinder 70, and the upper plate cover 50 The top cover is opened by the locking solenoid 88 by releasing the operation of the electric cylinder 70 and the operation of the locking solenoid 88 depending on whether the main power switch 64 is turned off or not. A control unit 98 is provided to control 50 to be corrected.

With reference to the accompanying drawings, the function and operation of the electronic lecture table according to an embodiment of the present invention of the above configuration will be described in detail.

11 is a flowchart illustrating a signal flow of an electronic lecture table according to an embodiment of the present invention.

Referring to FIG. 11, first, an electronic lecture table 30 according to an embodiment of the present invention is provided with an operation signal for power input from the main power switch 64 by a control unit 98 provided therein. (ST-1).

If the operation signal for power supply is applied from the main power switch 64, the controller 98 supplies power to the electronic lecture table 30 according to an embodiment of the present invention (ST-2). By driving the locking solenoid 88, the solenoid rod is controlled to release the coupling from the second coupling hole 90b of the upper cover 50 (ST-3).

Then, a control signal for driving the upper plate motor 309 is transmitted so that the upper plate motor 309 is driven forward rotation (ST-4), and the upper plate cover 50 is automatically opened (ST-5). When the top cover 50 is completely opened, the top cover position sensor 54 detects the opening of the top cover 50 (ST-6) and transmits an open signal to the controller 98.

Then, the control unit 98 drives the locking solenoid 88 to control the solenoid rod is inserted into the first coupling hole 90a of the top cover 50 to be coupled. Thereafter, the controller 98 drives the forward / reverse motor 74 of the electric cylinder 70 by forward rotation so that the monitor 38 can be raised by a predetermined angle (ST-7). To increase.

In this state, the control unit 98 determines whether the additional position operation signal is applied from the key panel 42 (ST-8), and when the additional position operation signal is applied, the electric cylinder 70 in response to the operation signal. ) Is driven (ST-9).

After the lecture is completed, the lecture panel 98 receives the power off signal when the power button 42a provided in the key panel 42 is turned off after finishing the lecture (ST-10). ) Drives the electric cylinder 70 to be lowered (ST-11). At this time, the electric cylinder 70 has a limit of elevating, the limit switch 78 senses the position of the drive stroke adjusting bushing 80 provided in the electric cylinder 70 to give the elevating limit do. Thus, even if the forward and reverse motor 74 provided in the electric cylinder 70 rotates in reverse, the forward and reverse motor 74 is driven until the monitor 38 is completely horizontally seated in the monitor seating groove 36. Will be.

When the monitor 38 is seated in the monitor seating groove 36, the monitor position detection sensor 320 detects this (ST-12) and transmits a signal to the control unit 98. Then, the control unit 98 drives the locking solenoid 88 to control the solenoid rod to be drawn out of the first coupling hole 90a of the upper plate cover 50, and drives the upper plate motor 309 to cover the upper plate cover. (50) is closed (ST-13). In this state, when the main power switch 64 is operated (ST-14), all the power supplied to the electromagnetic lecture table 30 is cut off while the rod of the locking solenoid 88 is the top plate cover 50. It is automatically coupled to the second coupling hole (90b) formed in the top plate cover 50 is to lock the door lock (ST-15). As a result, the top plate cover 50 is closed.

1 is a perspective view showing an electronic lecture table according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view illustrating a mounting state of the anti-theft frame when the top cover and the door are opened in the electromagnetic steel table of FIG. 1.

Figure 3 is an exploded perspective view of the main portion showing the mounting state of the top plate cover and the top plate position detection sensor of the electronic lecture table according to an embodiment of the present invention.

4A and 4B are cross-sectional views illustrating a driving principle of the upper plate of FIG. 3.

5 is a schematic cross-sectional view taken along the line I-I of FIG. 1.

6 is a schematic cross-sectional view of the electric cylinder included in the electronic lecture table according to an embodiment of the present invention.

7A and 7B are cross-sectional views illustrating an operating principle of the monitor position sensor of FIG. 5.

8 is a schematic cross-sectional view of the main part taken along line II-II of FIG. 1.

9 is a cross-sectional view of the locking device according to an embodiment of the present invention.

10 is a block diagram illustrating a circuit configuration of an electronic lecture table according to an embodiment of the present invention.

11 is a flowchart illustrating a signal flow of an electronic lecture table according to an embodiment of the present invention.

* Description of Symbols for Parts of Drawings *

30: Electronic lecture table 32: Table body

34: Top 36: Monitor mounting groove

38: monitor 40: microphone

42: key panel 45: heat dissipation hole

46: mouse seating groove 50: top cover

51: protrusion hanger 52: guide rail

53: receiving groove 54: position detection sensor

56: metal plate 58: keyboard drawer

60: drawer 61: drawer keyhole

63: door 64: power switch

66: white axis 68: bracket

70: electric cylinder 72: rotating pin

74: stationary motor 76: electric cylinder body

78: limit switch 80: bushing for adjusting drive stroke

82: screw bolt 84: rod nut

86: coupling ring 88: locking solenoid

90: coupling hole 100: anti-theft frame

102: opening 104: engaging projection

110: lock frame 112: lock rod

112a: locking groove 113: locking part

114: press portion 115, 116: coil spring

120: lower hole 130, 132: locking device

140: fixed frame 150: main drive unit

152: top plate-table body coupling screw 160: electronic equipment

162: top connector 200: keyboard

Claims (14)

Table body of the enclosure; A monitor seating groove coupled to the table body upper surface and accommodating a monitor formed on the upper and lower sides of the upper plate recess, upper and lower cover grooves formed on the inner side of the upper plate recess, and a monitor formed on the recessed portion of the center of the upper surface. Top plate comprising a; A top cover slidingly coupled to the top cover groove and opening and closing the monitor seating groove; Upper cover gear threads formed at a position adjacent to the upper cover cover groove on a lower surface of the upper cover; A motor gear groove formed at a position overlapping with the top cover gear screw thread at the top recess; A motor cog wheel positioned below the top plate recess and having a thread engaged with the top cover gear thread through the motor cog groove; An upper plate motor connected to the motor gear wheel; A monitor seated in the monitor seating groove, the monitor being coupled by a hinge that provides a pivot reference point at a predetermined portion of an inner surface of the monitor seating groove of the upper plate; An electric cylinder coupled to a bracket fixed to an upper end of the lower surface of the monitor and lifting and lowering the monitor; A top cover position detection sensor positioned at a predetermined portion of the top plate and sensing a position of the top cover; And And a controller configured to determine whether the top cover is open and to generate a control signal for automatically raising the monitor upward by a predetermined angle when the top cover is opened. The method of claim 1, An electronic lecture table characterized in that it is located in a predetermined region of the inner surface of the monitor seating groove, the monitor position sensor for detecting the position of the monitor. The method of claim 2, The monitor position sensor is a micro switch, the electronic lecture table, characterized in that the monitor is turned on (ON) while seated in the monitor seating groove. The method of claim 1, And a metal plate positioned on a lower surface of the upper plate cover corresponding to the upper plate cover position detecting sensor, wherein the upper plate cover position detecting sensor is a sensor whose voltage value is changed by the metal plate. . The method of claim 2, The upper plate includes a rising operation button for further raising the monitor in accordance with a user's key, a lowering operation button for lowering the monitor, a stop button for stopping the movement of the monitor, the electric cylinder, and the upper plate motor. The electronic lecture table further comprises a key panel provided with a power button for switching the power supply of. The method of claim 5, wherein At least two fixing frames positioned on both sides of the table body for storing and fixing electronic equipment; And Between the fixed frames, the electronic lecture table further comprises a main drive unit which is fixed by the coupling screw to the fixed frame, and including a main power switch for generating an operation signal for switching the power input. The method of claim 6, Located at a predetermined portion of the upper surface of the monitor seating groove, and further comprising a normally closed locking solenoid for detecting the turn off of the main power switch to automatically correct the door lock of the top cover. Electronic lecture table characterized in that. The method of claim 7, wherein The electric cylinder is operated according to whether the main power switch is turned on and whether the top plate cover is opened, and the electric cylinder depends on whether the top plate cover is closed and the main power switch is turned off. An electronic lecture table further comprising a memory storing a program for controlling the operation of the cylinder and the operation of the locking solenoid. The method of claim 8, The controller controls the monitor to rise by operating the electric cylinder after opening the top plate by automatically operating the top plate motor according to whether the main power switch is turned on. A manual key operation signal of the key panel is applied to perform additional drive control of the electric cylinder, and the monitor is lowered by operating the electric cylinder according to whether the main power switch is turned off. Confirming the lowering of the monitor, operating the upper plate motor to close the upper plate, releasing the operation of the electric cylinder and the locking solenoid to control the upper plate cover to be corrected by the locking solenoid. Featured electronic lecture table. The method of claim 1, The table body further comprises at least one heat dissipation hole formed in at least one of the wall surface and the bottom of the table body. The method of claim 6, It has a rectangular frame shape, overlapping the fixed frame and overlaps the coupling screw coupled to the fixed frame, the front opening of the main drive portion, characterized in that it further comprises an anti-theft frame fixed to the table body by a locking device Electronic lecture table made with. The method of claim 11, The anti-theft frame having a rectangular frame shape has at least one opening formed on one surface of the top, bottom, left and right surfaces of the anti-theft frame, and at least one protrusion formed on a surface facing the one surface. Electronic lecture table, characterized in that it further comprises. The method of claim 12, The locking device has a locking rod movable up and down by an internal coil spring, and the locking device is coupled to the table body such that the locking rod is inserted into the opening of the anti-theft frame, and the protrusion is connected to the table body. An electronic lecture table characterized in that the anti-theft frame is fixed by being inserted into a hole formed in a predetermined portion. The method of claim 1, The table body has one top and the other top facing the one top, The upper end has a cross section of the '┛' or '┃' shape, The other upper end has a '┓' shaped cross section curved inwardly to have a surface in contact with the upper plate, An end portion of the top cover adjacent to the upper end has a '┏' shaped cross section, The electronic lecture table is: A locking device coupled to a predetermined portion of the upper plate adjacent to the other upper end and having a locking rod for fixing an end of the other upper end of a '┓' shape; An upper plate connecting rod coupled to a predetermined portion of the upper plate; And The table for the electronic lecture, characterized in that it further comprises a top plate-table body coupling screw coupled to the upper end and the upper plate connecting rod, the screw head is covered by the end of the top cover.

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