KR100904493B1 - Monitor tilting device for table - Google Patents

Monitor tilting device for table Download PDF

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Publication number
KR100904493B1
KR100904493B1 KR1020080096384A KR20080096384A KR100904493B1 KR 100904493 B1 KR100904493 B1 KR 100904493B1 KR 1020080096384 A KR1020080096384 A KR 1020080096384A KR 20080096384 A KR20080096384 A KR 20080096384A KR 100904493 B1 KR100904493 B1 KR 100904493B1
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KR
South Korea
Prior art keywords
tilting
monitor
main body
electric motor
driving
Prior art date
Application number
KR1020080096384A
Other languages
Korean (ko)
Inventor
최명수
Original Assignee
탐투스 주식회사
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Publication date
Application filed by 탐투스 주식회사 filed Critical 탐투스 주식회사
Priority to KR1020080096384A priority Critical patent/KR100904493B1/en
Application granted granted Critical
Publication of KR100904493B1 publication Critical patent/KR100904493B1/en

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B21/00—Tables or desks for office equipment, e.g. typewriters, keyboards
    • A47B21/007—Tables or desks for office equipment, e.g. typewriters, keyboards with under-desk displays, e.g. displays being viewable through a transparent working surface of the table or desk
    • A47B21/0073—Tables or desks for office equipment, e.g. typewriters, keyboards with under-desk displays, e.g. displays being viewable through a transparent working surface of the table or desk liftable above the desk top
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B19/00—Reading-desks; Lecterns; Pulpits, i.e. free-standing
    • A47B19/06—Reading-desks; Lecterns; Pulpits, i.e. free-standing with adjustable top leaf
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
    • A47B2097/005—Monitor mounted supports or stands
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00—General construction of tables or desks
    • A47B2200/0066—Workstations
    • A47B2200/0078—Control consoles or desks
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00—General construction of tables or desks
    • A47B2200/008—Tables or desks having means for applying electronic or electric devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand

Abstract

The disclosed contents refer to a tilting angle of an LCD monitor (hereinafter referred to as a "monitor") that is housed in an electronic lecture table on which multimedia media such as lecture textbooks and notebook computers are placed. By adjusting the driving of the electronic device, it is possible to monitor the user's elongation condition without regard to the electronic teaching table.

Monitor tilting device for a table according to an embodiment of the present invention,

In the monitor tilting device installed in the storage box formed on the upper plate such as a table,

A main body fixed to the storage box and formed to have an upper portion opened;

An electric tilting module fixed to the bottom surface of the main body,

A tilting plate on which the lower end is pivotally fixed to the front side wall of the main body, and the hinge part is rotated in the main body on a central axis when the electric tilting module is driven;

Bracket mounted to the electric tilting module,

A pair of tilting levers, each of which has an upper end rotatably fixed to both sides of the tilting plate, and a lower end rotatably fixed to both sides of the bracket;

Including an operation unit for driving the electric tilting module during operation by the user,

The tilting plate is tilted around the hinge part by the bracket that is moved when the electric tilting module is driven by the operation unit, and the tilting angle of the monitor mounted on the tilting plate and stored in the main body can be adjusted.

Description

Monitor tilting device for table

According to the present invention, the tilting angle of an LCD monitor (hereinafter referred to as a "monitor") that is stored in a tiltable manner on an upper plate of a table such as an electronic teaching desk is referred to as a user's physical condition (e.g., instructor). A monitor tilting device for a table for simple adjustment.

More specifically, by adjusting the tilting angle of the monitor accommodated in the electronic teaching desk on which multimedia media such as lecture textbooks and laptops are seated by driving the electric tilting module (hereinafter referred to as "module") by a switch operation, The present invention relates to a monitor tilting device for a table, which can be monitored without considering a user's stretching condition for the electronic teaching table.

Conventionally, an electronic teaching table installed in a classroom, a classroom, etc. has been used for the purpose of a simple table used by professors and instructors for teaching materials for seminars and learning. On the other hand, due to the development of multimedia technology, various electronic devices such as computers, physical picture projectors, LCD projectors, etc. are mounted in the classroom, and the lecture materials are output to display devices such as screens using computers, LCD projectors, etc. The teaching table is being used.

As shown in Figure 1, the electronic table is equipped with a conventional monitor for the table,

An amplifier (3) to which the microphone (1) and the wireless antenna (2) are connected, a top panel (5) on which a touch monitor (4) is used;

A mounting table 8 on which the keyboard 6 and the mouse 7 are seated, a first storage unit 10 formed below the mounting table 8 to accommodate the computer main body 9, and a first storage unit ( 10) a third storage part 12 formed at the lower side to receive the audio 11 and a third housing part formed at the lower side of the second storage part 12 to accommodate the speaker housing 13 in which the speaker is built-in; And a body 15 composed of 14).

Therefore, when a user writes with a finger or an electronic pen on the screen of the touchmonitor 4 during lectures, the writing contents are transmitted to an LCD projector (not shown) connected to the PC main body 9 to display a large screen. Projection can be efficiently conducted while focusing the eyes of the trainees.

In addition, the keyboard 6 and the mouse 7 may be used to input contents related to the lecture contents, and the microphone 1 and the audio 11 may be used when music, voice, etc. are required during the lecture.

The electronic teaching table according to the prior art, the electronic teaching table composed of the above-described body 15 and the top plate 5 to have a predetermined height (H) so that a large number of people can use in common without considering the individual physical conditions of the user. Is produced. Also, the touchmonitor 4 is fixed to the top plate 5 so as to maintain the same inclination angle as that of the top plate 5 (that is, the tilting angle of the touch monitor 4 cannot be adjusted).

For this reason, when the user monitors the touch monitor 4 while the user lectures at the institute or repeats the same lecture contents to the trainee, such as a seminar, the touch monitor when the user's extension condition is incompatible with the size of the electronic teaching desk. (4) monitoring is not easy, and the educational effect is poor.

In addition, when the user monitors the touchmonitor 4 for a long time in an unstable posture due to inadequate user's elongation condition and electronic table size condition, the user's body balance is disturbed, which increases the user's fatigue and the degree of lecture concentration. There is a problem falling.

According to the embodiment of the present invention, the tilting angle of the monitor, which is housed in a tiltable manner on the upper plate such as an electronic teaching desk, is adjusted by driving the module by a switch operation, so that the user can be monitored without considering the stretching condition of the user. It is associated with a monitor tilting device for a table to provide reliability and reliability.

According to an embodiment of the present invention, when tilting a monitor that is stored in a tiltable manner on an upper plate such as an electronic teaching desk, a table monitor that ensures safety by preventing a user's finger or the like from being caught in the gap between the main body and the monitor. It relates to a tilting device.

Monitor tilting device for a table according to an embodiment of the present invention,

In the monitor tilting device installed in the storage box formed on the upper plate such as a table,

A main body fixed to the storage box and formed to have an upper portion opened;

An electric tilting module fixed to the bottom surface of the main body,

A tilting plate on which the lower end is pivotally fixed to the front side wall of the main body, and the hinge part is rotated in the main body on a central axis when the electric tilting module is driven;

Bracket mounted to the electric tilting module,

A pair of tilting levers, each of which has an upper end rotatably fixed to both sides of the tilting plate, and a lower end rotatably fixed to both sides of the bracket;

Including an operation unit for driving the electric tilting module during operation by the user,

The tilting plate is tilted around the hinge part by the bracket that is moved when the electric tilting module is driven by the operation unit, and the tilting angle of the monitor mounted on the tilting plate and stored in the main body can be adjusted.

According to a preferred embodiment, it is further fixed to the left and right sides of the above-mentioned tilting plate, and further comprises a pinch preventing plate to prevent the user's fingers pinched in the gap between the main body and the monitor when the monitor is tilted.

The above-described electric tilting module,

An electric motor driven in the forward and reverse directions,

Worm gear formed on the output shaft of the electric motor,

The worm wheel meshes with the worm gear,

A rotating shaft coupled to the worm wheel and rotated,

A moving piece coupled to the rotating shaft and converting the rotating movement of the rotating shaft into a linear movement;

It is disposed on the left and right sides of the rotating shaft, and provided with a guide rod for supporting the moving piece moved along the rotating shaft rotated when the electric motor is driven.

The operation unit mentioned above,

A first switch for stopping the driving of the electric motor so that the tilting plate, which is tilted in the upward direction of the main body due to the driving of the electric motor, stops at a preset maximum angle when operated by a user;

A second switch for stopping the driving of the electric motor such that the tilting plate tilted downward in the main body due to the driving of the electric motor stops at a predetermined minimum angle when operated by a user;

A third switch for stopping the driving of the electric motor so that the tilting plate, which is tilted in the upward direction of the main body due to the driving of the electric motor, stops at a predetermined tilting angle when operated by a user;

When operated by the user, the tilting plate tilted downward in the main body due to the driving of the electric motor is provided with a fourth switch for stopping the driving of the electric motor so as to stop at a predetermined tilting angle.

The monitor tilting device for a table according to an embodiment of the present invention has the following advantages.

The tilt angle of the monitor, which is stored in a tiltable manner on the upper plate of the electronic desk used in the classrooms of the school, etc., is adjusted by driving the module by the switch operation, so that it can be monitored without considering the stretching condition of the user. It provides the last name, and the user can focus on the lecture.

In addition, when tilting a monitor that can be tilted to an upper plate such as an electronic lecture table, the user can stably use a part of the user's body (finger) or an article (such as a writing instrument) in a gap between the main body and the monitor. .

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to describe in detail enough to enable those skilled in the art to easily practice the present invention. It is not intended that the technical spirit and scope of the invention be limited.

As shown in Figure 2 to 7, the monitor tilting device for a table according to an embodiment of the present invention,

In the monitor tilting device installed in the storage box formed on the upper plate such as a table,

A main body 50 fixed to the storage box and formed to open at an upper portion thereof;

An electric tilting module 51 fixed to the bottom surface of the main body 50,

The lower end portion is pivotally fixed to the front side wall of the main body 50, and the main body 50 is centered around the hinge portion 52 (for example, a hinge pin) when the electric tilting module 51 is driven. A tilting plate 54 which is rotated within and is equipped with a monitor 53 (LCD monitor),

A tilting bracket 55 mounted on the module 51,

A pair of tilting levers 56 and 58 having upper ends rotatably fixed to the middle sides of both sides of the tilting plate 54 and lower ends rotatably fixed to both side surfaces of the tilting bracket 55;

Including an operation unit 57 for driving the electric tilting module 51 during operation by the user,

The tilting plate 54 is tilted around the hinge portion 52 by the tilting bracket 55 which is moved when the module 51 is driven by the operation of the operation unit 57, and is mounted on the tilting plate 54. The tilting angle of the monitor 53 accommodated in the main body 50 can be adjusted.

In this case, each of the above-described tilting plate 54 is fixed to the left and right, and the pinch to prevent the user's fingers or writing instruments, such as the user's fingers or writing instruments in the gap between the body 50 and the monitor 53 when the monitor 53 is tilted. It further comprises a prevention plate (59).

The above-described electric tilting module 51,

Electric motor 60 driven in the forward and reverse directions, the worm gear (not shown) formed on the output shaft of the electric motor 60, and the rotary shaft 61 is coupled to the worm wheel (not shown) to be engaged with it And a moving piece 62 coupled to the rotary shaft 61 and moved along the rotary shaft 61 by a nut (not shown) for converting the rotary motion of the rotary shaft 61 into a linear motion. The guide rods 63 are disposed on the left and right sides and support the moving pieces 62 which are moved along the rotating shaft 61 which is rotated when the electric motor 60 is driven.

The operation unit 57 described above,

When operated by the user, the first to stop the driving of the electric motor 60 so that the tilting plate 54, which is tilted in the upward direction of the main body 50 due to the drive of the electric motor 60 to stop at a predetermined maximum angle Switch 64,

When operated by the user, the tilting plate 54, which is tilted downward of the main body 50 due to the driving of the electric motor 60, stops at the preset minimum angle (referring to the initial position) of the electric motor 60. A second switch 65 which stops driving;

When operated by the user, the driving of the electric motor 60 is stopped so that the tilting plate 54, which is tilted upwards of the main body 50 due to the driving of the electric motor 60, stops at a predetermined tilting angle. The third switch 66,

When operated by a user, the driving of the electric motor 60 is stopped so that the tilting plate 54 which is tilted downward of the main body 50 due to the driving of the electric motor 60 stops at a predetermined tilting angle. A fourth switch 67 is provided.

In the drawings, reference numeral 68 is a fixing piece formed on the front side wall of the main body 50 to which the hinge portion 52 is fixed, and 69 is coupled to the outer surface of the guide rod 63 to be worn when the moving piece 62 is moved. Bushing to minimize the thing.

Hereinafter, an example of use of the monitor tilting device for a table according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figure 5, the main body 50 is fixed to a storage box formed on the upper plate 70, such as an electronic teaching table, a table mainly used in the school. At this time, the upper surface of the body 501 is fixed to maintain the same inclination angle as the inclination angle of the upper plate (70).

 The tilting angle of the monitor 53 may be adjusted by operating the operation unit 57 so that the monitor 53 housed in the main body 50 so as to be easily tilted can be monitored. That is, as the user operates the corresponding switch of the operation unit 57 to drive the electric motor 60 of the module 51, the worm gear formed on the output shaft of the electric motor 60 and the worm wheel engaged with the worm gear. It is coupled to, and rotates the rotary shaft 61 due to the rotation of the worm wheel.

Due to the rotation of the rotating shaft 61, the moving piece 62 coupled to the rotating shaft 61 is moved along the rotating shaft 61. That is, due to the rotation of the rotary shaft 61, the moving piece 62 is supported and moved by the guide rods 63 disposed on the left and right sides of the rotary shaft 61.

At this time, when the moving piece 62 is moved along the rotating shaft 61, a pair of tilting levers 56 and 58, which lower ends are rotatably fixed to both sides of the bracket 55 mounted to the moving piece 62, respectively. Tilt the tilting plate 54 with the hinge 52 fixed at both ends to the fixing piece 68 formed on the front side wall of the main body 50 as a central axis. Thus, the monitor 53 mounted on the tilting plate 54 can be tilted within a set angle range.

When the first switch 64 of the operation unit 57 is operated by the user, the tilting plate 54, which is tilted in the upward direction of the main body 50 due to the driving of the electric motor 60, stops at a preset maximum angle. The driving of the electric motor 60 is stopped. That is, since the tilting plate 54 is tilted and stopped at the maximum angle with the hinge portion 52 as the central axis, the monitor 53 mounted on the tilting plate 54 has the maximum inclination angle from the upper plate 70 such as an electronic table. (Eg, 30 degrees).

Thus, in the case where the stretching condition is relatively small, the user can easily monitor the monitor 53 tilted with respect to the top plate 70 without considering the physical condition.

At this time, the tilting bracket 55, which is moved due to the rotation of the rotary shaft 61, is moved to the side farthest from the module 51 side.

When the second switch 65 of the operation unit 57 is operated by the user, the tilting plate 54 which is tilted downward of the main body 50 due to the driving of the electric motor 60 stops at a preset minimum angle. The driving of the electric motor 60 is stopped. That is, the tilting plate 54 is tilted at the minimum angle with the hinge 52 as the central axis and stopped. Therefore, the monitor 53 mounted on the tilting plate 54 maintains the initial state accommodated in the main body 50 so as to coincide with the surface of the upper plate 70 such as the electronic teaching table.

Thus, in the case where the stretching condition is relatively large, the user can easily monitor the monitor 53 which is tilted with respect to the top plate 70 without considering the physical condition.

At this time, the tilting bracket 55 which is moved due to the rotation of the rotary shaft 61 maintains the initial state moved to the side closest to the module 51 side.

When the third switch 66 of the operation unit 57 is operated by the user, the tilting plate 54 which is tilted upward in the main body 50 due to the driving of the electric motor 60 stops the electric motor 60. Stops at any preset tilting angle. That is, when the user operates the third switch 66, the tilting angle of the monitor 53 tilted upward is stopped by driving the electric motor 60.

When the fourth switch 67 of the operation unit 57 is operated by the user, the tilting plate 54 which tilts downward of the main body 50 due to the driving of the electric motor 60 stops the electric motor 60. Stops at any preset tilting angle. That is, the tilting angle of the monitor 53 tilted downward can be adjusted by stopping the driving of the electric motor 60 at the time when the user operates the fourth switch 67.

On the other hand, as shown in Figure 6 (a, b) and 7, respectively fixed to the left and right sides of the above-mentioned tilting plate 54, and at the same time in close contact with the inner surface of the main body 50 during the tilting of the monitor 53 By tilting the pinch prevention plate 59, it is possible to prevent the user's fingers or ball-point pens or the like from being caught in the gap between the main body 50 and the monitor 53 when the monitor 53 is tilted.

As described above, the table tilt monitor according to an embodiment of the present invention, the user adjusts the tilt angle of the LCD monitor accommodated in the upper plate of the electronic table, table, etc. by the user to drive the electric tilt module by the switch operation. Therefore, it can be monitored without considering the user's stretching conditions, and provides convenience to the user, and can be stably used by preventing the user's fingers from being caught in the gap between the main body and the monitor when the monitor is tilted.

1 is a use state diagram of a monitor for a table according to the prior art.

Figure 2 is an exploded perspective view of the monitor tilting device for a table according to an embodiment of the present invention,

3 is a combined perspective view of the monitor tilting device for a table according to the embodiment of the present invention;

4 is another perspective view of the monitor tilting device for a table according to an embodiment of the present invention,

5 is a view illustrating tilting a monitor in a monitor tilting device for a table according to an embodiment of the present invention;

Figure 6 (a, b) is a view showing the tilt of the monitor accommodated in the table in the monitor tilting device for the table according to an embodiment of the present invention,

7 is a state diagram used in the monitor tilt device for a table according to an embodiment of the present invention.

* Explanation of symbols used in the main part of the drawing

50; main body

51; Electric tilting module

52; Hinge

53; monitor

54; Tilting Plate

55; Bracket

56; Tilting lever

57; Control panel

58; Tilting lever

59; Jamming Plate

60; Electric motor

61; Axis of rotation

62; Moving

63; Guide rod

64; First switch

65; Second switch

66; 3rd switch

67; 4th switch

Claims (4)

delete delete A main body fixed to a storage box formed on the top plate and configured to open at an upper portion thereof; An electric motor driven in a forward and reverse direction, a worm gear formed on an output shaft of the electric motor, a worm wheel engaged with the worm gear, a rotation shaft coupled to the worm wheel and rotated, and coupled to the rotation shaft, And a moving rod for converting a rotational movement of the rotary shaft into a linear movement, and a guide rod disposed on the left and right sides of the rotary shaft, the guide rod supporting the movable shaft moved along the rotary shaft when the electric motor is driven. An electric tilting module fixed to the bottom surface of the body; A tilting plate having a lower end pivotably rotatably fixed to a front side wall of the main body, the hinge part being pivoted in the main body with a central axis when the electric tilting module is driven, and having a monitor mounted thereon; A bracket mounted to the electric tilting module; A pair of tilting levers of which upper ends are rotatably fixed to the middle sides of both sides of the tilting plate, and lower ends are rotatably fixed to both sides of the bracket; An operation unit for driving the electric tilting module when operated by a user; And It is fixed to the left and right sides of the tilting plate, respectively, and includes a pinch prevention plate to prevent the user's fingers caught in the gap between the main body and the monitor when the monitor tilts, The tilting plate is tilted about the hinge part by the bracket that is moved when the electric tilting module is driven by the manipulation unit, and the tilting angle of the monitor mounted on the tilting plate and stored in the main body can be adjusted. Monitor tilting device for table. The method according to claim 3, The operation unit, A first switch for stopping the driving of the electric motor so that the tilting plate, which is tilted upward in the main body due to the driving of the electric motor, stops at a preset maximum angle when operated by a user; A second switch for stopping the driving of the electric motor such that the tilting plate tilted downward in the main body due to the driving of the electric motor stops at a predetermined minimum angle when operated by a user; A third switch for stopping the driving of the electric motor so that the tilting plate, which is tilted in the upper direction of the main body due to the driving of the electric motor, stops at a predetermined tilting angle when operated by a user; And a fourth switch for stopping the driving of the electric motor so that the tilting plate, which is tilted downward in the main body due to the driving of the electric motor, stops at a predetermined tilting angle when operated by a user. Monitor tilting device for table.
KR1020080096384A 2008-10-01 2008-10-01 Monitor tilting device for table KR100904493B1 (en)

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Application Number Priority Date Filing Date Title
KR1020080096384A KR100904493B1 (en) 2008-10-01 2008-10-01 Monitor tilting device for table

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101384602B1 (en) 2013-02-20 2014-04-11 주식회사 알엔웨어 Electric multi touch table
KR20180002639U (en) 2017-02-27 2018-09-05 주식회사 퍼시스 A desk

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200409166Y1 (en) * 2005-11-16 2006-02-20 주식회사 리비젼프로젝트 Up and down apparatus of monitor electron table

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200409166Y1 (en) * 2005-11-16 2006-02-20 주식회사 리비젼프로젝트 Up and down apparatus of monitor electron table

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101384602B1 (en) 2013-02-20 2014-04-11 주식회사 알엔웨어 Electric multi touch table
KR20180002639U (en) 2017-02-27 2018-09-05 주식회사 퍼시스 A desk
KR200488179Y1 (en) * 2017-02-27 2018-12-24 주식회사 퍼시스 A desk

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