CN215344874U

CN215344874U - Liquid crystal monitor adopting combined frame

Info

Publication number: CN215344874U
Application number: CN202121990459.2U
Authority: CN
Inventors: 马健
Original assignee: Luoyang Ruiguang Movie TV Optic Electronic Technoloty Co Ltd
Current assignee: Luoyang Ruiguang Movie TV Optic Electronic Technoloty Co Ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2021-12-28
Anticipated expiration: 2031-08-20

Abstract

A liquid crystal monitor adopting a combined type frame comprises a liquid crystal screen, an upper frame, a lower frame and two side frames, wherein the upper frame, the lower frame and the two side frames are sequentially detachably connected along the circumferential direction to form a cavity; the upper frame is provided with a lamp panel assembly, and the lower frame is provided with a loudspeaker assembly and a key board which are positioned in the cavity; install the PCB board on PCB mounting panel respectively with LCD screen, loudspeaker subassembly, keypad, lamp plate subassembly electric connection. According to the utility model, during assembly, the liquid crystal screen is pushed into the clamping groove, and screws do not need to be screwed from the side after the liquid crystal screen is erected; the upper frame, the lower frame and the side frames are all made of aluminum profiles, the aluminum profiles are convenient to machine, manual machining procedures are not needed, and the consistency of each frame and the qualified rate of appearance are guaranteed.

Description

Liquid crystal monitor adopting combined frame

Technical Field

The utility model belongs to the technical field of monitors, and particularly relates to a liquid crystal monitor adopting a combined type frame.

Background

The monitor is an important component of a closed-circuit monitoring system, and the shell of the liquid crystal screen is fixedly connected with a support plate by screws in the assembly process at present. The problems with this approach are: (1) during assembly, the liquid crystal display and the support plate need to be erected firstly, and then screws are screwed from the side face, so that the assembly difficulty is high; (2) the shell and the support plate are mostly processed by sheet metal due to cost, and the sheet metal processing technology has the defect of large error, so that the appearance of the monitor cannot meet the product requirements.

Disclosure of Invention

In view of the above problems, the present invention is directed to a liquid crystal monitor using a combined frame.

The purpose of the utility model is realized by adopting the following technical scheme. The liquid crystal monitor adopting the combined type frame comprises a liquid crystal screen 10, a back plate, a PCB, a lamp panel assembly, a loudspeaker assembly and a key board, and further comprises an upper frame 20, a lower frame 30 and two side frames 40 which are made of aluminum profiles and sequentially detachably connected along the circumferential direction to form a cavity, wherein clamping grooves distributed along the circumferential direction and mounting platforms located on the back sides of the clamping grooves and distributed along the circumferential direction are arranged in the cavity, the liquid crystal screen is limited in the clamping grooves, the back plate is assembled on the mounting platforms and covers the cavity, and a PCB support plate is respectively connected with the upper frame and the lower frame and located between the liquid crystal screen and the back plate; the upper frame is provided with a lamp panel assembly, the lower frame is provided with a loudspeaker assembly and a key board which are positioned in the cavity, and a key cap matched with the key board protrudes out of the lower frame; install the PCB board on PCB mounting panel respectively with LCD screen, loudspeaker subassembly, keypad, lamp plate subassembly electric connection.

Further, the upper frame 10 is provided with a first clamping groove 207, the lower frame 30 is provided with a second clamping groove 313, and the side frame 40 is provided with a third clamping groove 4017; the first clamping groove, the second clamping groove and the two third clamping grooves are connected in the circumferential direction to form clamping grooves used for limiting the liquid crystal screen.

Further, the upper frame has a first upper frame edge 201 and a second upper frame edge 202 which are perpendicular to each other, a first limiting table 205 which is parallel to the second upper frame edge is arranged on the inner wall surface of the first upper frame edge close to the second upper frame edge, the first limiting table and the second upper frame edge form a first clamping groove 207 which is used for accommodating the upper edge of the liquid crystal screen shell, and a first limiting rib 2071 which is used for abutting against the upper edge of the liquid crystal screen shell is arranged in the first clamping groove.

Further, the lower frame is provided with a third upper frame edge 303 and a fourth upper frame edge 304 which are perpendicular to each other, a second limiting table 3123 which is parallel to the fourth upper frame edge is arranged on the inner wall surface of the third upper frame edge, the second limiting table and the fourth upper frame edge form a second clamping groove 313 which is used for accommodating the lower edge of the liquid crystal screen shell, and a second limiting rib 3131 which is used for abutting against the lower edge of the liquid crystal screen shell is arranged in the second clamping groove.

Further, the side frame has mutually perpendicular's first side frame 4011, second side frame 4012, is equipped with the spacing platform 4015 that is on a parallel with the second side frame on the internal face that first side frame is close to second side frame, and the spacing platform of third and second side frame constitute the third draw-in groove 4017 that is used for holding the side reason of LCD screen shell and this third draw-in groove is equipped with the spacing muscle 4018 of third that is used for the side reason of butt LCD screen shell.

Furthermore, the upper frame is provided with a first upper frame edge and a second upper frame edge which are perpendicular to each other, the lower frame is provided with a first lower frame edge and a second lower frame edge which are perpendicular to each other, the side frame is provided with a first side frame edge and a second side frame edge which are perpendicular to each other, a first mounting table 203 which is parallel to the second upper frame edge is arranged on the inner wall surface of the first upper frame edge far away from the second upper frame edge, a second mounting table 305 which is parallel to the second lower frame edge is arranged on the inner wall surface of the first lower frame edge far away from the second lower frame edge, and a third mounting table 4013 which is parallel to the second side frame edge is arranged on the inner wall surface of the first side frame edge far away from the second side frame edge; the backboard is detachably connected with the first installation platform, the second installation platform and the two third installation platforms which are distributed along the circumferential direction.

Furthermore, the upper frame is provided with a first upper frame edge and a second upper frame edge which are perpendicular to each other, the side frames are provided with a first side frame edge and a second side frame edge which are perpendicular to each other, a first connecting table 204 which is parallel to the second upper frame edge is arranged on the inner wall surface of the first upper frame edge, a third connecting table 4014 which is parallel to the second side frame edge is arranged on the inner wall surface of the first side frame edge, and the upper frame and the two side frames can be detachably connected through the matching of a screw hole formed in the end part of the first connecting table and the end part of the third connecting table and a screw.

Further, the lower frame is provided with a first lower frame edge and a second lower frame edge which are perpendicular to each other, a second connecting platform 306 which is parallel to the second lower frame edge is arranged on the inner wall surface of the first lower frame edge, a fourth connecting platform 312 which is parallel to the first lower frame edge is arranged on the inner wall surface of the second lower frame edge, and a first boss 3121 which is flush with the outer wall surface of the second connecting platform is arranged at the end part of the fourth connecting platform; the side frame has mutually perpendicular's first side frame limit, second side frame limit, is equipped with the third on the internal face on first side frame limit and connects the platform 4014 that is on a parallel with second side frame limit, connects the cooperation of the screw and the screw that set up on platform tip, third connection platform tip, the first boss with the lower frame can dismantle with two side frames and be connected through the second.

Further, the upper frame has a second upper frame edge, the lower frame has a fourth lower frame edge, the side frame has a second side frame edge, the outer wall surface of the second upper frame edge is provided with a first positioning table 209 extending along the length direction of the second upper frame edge, the outer wall surface of the fourth lower frame edge is provided with a second positioning table 314 extending along the length direction of the fourth lower frame edge, and the side part of the second positioning table is provided with a stop part 3141; the protection plate 90 is limited between the first positioning table and the second positioning table and is detachably connected with the side frame through matching of screw holes and screws on the second side frame edge.

Further, the liquid crystal monitor panel further includes a base 70 mounted on the lower frame.

The liquid crystal monitor adopting the combined frame has the following advantages that:

(1) the upper frame, the lower frame and the two side frames are all made of aluminum profiles, the aluminum profiles are convenient to machine, manual machining procedures are not needed, and the consistency of each frame and the qualified rate of the appearance are guaranteed;

(2) the upper frame, the lower frame and the two side frames are sequentially detachably connected along the circumferential direction to form a cavity, clamping grooves distributed along the circumferential direction are formed in the cavity, the liquid crystal screen is pushed into the clamping grooves during assembly, and screws do not need to be screwed from the side after the liquid crystal screen is erected;

(3) the upper frame, the lower frame and the two side frames are detachably connected, when any one of the frames is damaged, only the corresponding frame needs to be replaced, integral replacement is not needed, and maintenance cost is reduced.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are specifically described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a perspective view of a liquid crystal monitor using a built-up frame according to the present invention.

Fig. 2 is a perspective view of the monitor shown in fig. 1 with a shielding plate removed.

Fig. 3A is a perspective view of an upper frame in the monitor shown in fig. 1.

Fig. 3B is a left side view of fig. 3A.

Fig. 4A is a perspective view of a lower frame in the monitor shown in fig. 1.

Fig. 4B is a left side view of fig. 4A.

Fig. 5A is a left side view of the left frame in the monitor shown in fig. 1.

Fig. 5B is a perspective view of the left frame of the monitor shown in fig. 1.

Fig. 6 is a schematic view of the monitor of fig. 1 without a back plate installed.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1 and 2, the liquid crystal monitor using the combined frame of the present invention includes an upper frame 20, a lower frame 30 and two side frames 40 which are sequentially detachably connected along a circumferential direction to form a cavity, wherein the cavity is provided with a plurality of clamping grooves distributed along the circumferential direction, and a mounting platform located at a back side of the clamping grooves and distributed along the circumferential direction, a liquid crystal screen 10 is limited in the clamping grooves, a back plate is assembled on the mounting platform and covers the cavity, a PCB support plate is respectively connected with the upper frame and the lower frame and located between the liquid crystal screen and the back plate, a speaker assembly and a key plate are assembled on the lower frame, and a key cap matched with the key plate protrudes from the lower frame, and the PCB plate mounted on the PCB support plate is respectively electrically connected with the liquid crystal screen, the speaker assembly and the key plate.

The upper frame, the lower frame and the two side frames are made of the aluminum profiles, the aluminum profiles are convenient to machine, manual machining procedures are not needed, and the consistency of each frame and the qualified rate of the appearance are guaranteed.

Referring to fig. 3A and 3B, the upper frame has a first upper frame edge 201 and a second upper frame edge 202 that are perpendicular to each other, a first mounting platform 203, a first connecting platform 204, and a first limiting platform 205 that are parallel to the second upper frame edge are arranged in parallel on an inner wall surface of the first upper frame edge along a direction close to the second upper frame edge, a first mounting hole 206 and two first screw holes located at two sides of the first mounting hole are arranged on the second upper frame edge in a penetrating manner, and the first limiting platform and the second upper frame edge form a first slot 207 for accommodating an upper edge of the liquid crystal display housing. Furthermore, still be equipped with the first spacing muscle 2071 that is on a parallel with first upper ledge and is located first draw-in groove on the internal face of second upper ledge, first spacing muscle is used for the top surface of butt LCD screen shell during the assembly, guarantees that the display area of LCD screen shows completely, and the lamp shade mounting hole sets up between first spacing muscle and first upper ledge this moment. Furthermore, in this embodiment, the first mounting table, the first connecting table, the first limiting table, and the first limiting rib are all continuous integrated structures extending along the length direction of the upper frame, and at this time, in order to facilitate assembling of components such as lamp panels, screws, and the like, the first mounting table, the first connecting table, and the first limiting table are all provided with the first avoiding groove 208, but in other embodiments of the present invention, on the premise of ensuring the strength, the first mounting table, the first connecting table, the first limiting table, and the first limiting rib may also be discontinuous structures, for example: as for the first mounting table, the first connecting table and the first limiting table, only the part provided with the screw hole is allowed to be reserved according to the assembly requirement. In addition, the first mounting table is lower than the end face of the first upper frame edge, so that the back plate is convenient to assemble on the upper frame and is in a flush state. Meanwhile, the outer wall surface of the second upper frame edge is provided with a first positioning table 209 extending along the length direction thereof, and the lampshade mounting hole penetrates through the first positioning table.

Referring to fig. 4A and 4B, the lower frame has a first lower frame edge 301, a second lower frame edge 302, a third lower frame edge 303, and a fourth lower frame edge 304, which are connected in sequence, and the first lower frame edge is perpendicular to the second lower frame edge, and the third lower frame edge is perpendicular to the fourth lower frame edge. The second mounting platform 305 and the second connecting platform 306 which are parallel to the second lower frame edge are arranged on the inner wall surface of the first lower frame edge in parallel along the direction close to the second lower frame edge, and the second mounting platform and the second connecting platform are both of a discontinuous structure by arranging a second avoiding groove 307 for facilitating the assembly of the loudspeaker assembly and the base. The two sides of the second lower frame edge are respectively provided with a second screw hole 308 for mounting the panel protection rod, the middle part of the second lower frame edge is provided with a plurality of mounting holes 309 for mounting a key cap, and a horn hole 310 for matching with a horn component is arranged between the screw hole and the mounting hole; a third connecting platform 311 and a fourth connecting platform 312 which are parallel to the first lower frame edge are arranged on the inner wall surface of the second lower frame edge in parallel, the third connecting platform and the fourth connecting platform are both of a discontinuous structure due to the existence of the horn hole, and the horn component is installed through the third connecting platform and the fourth connecting platform which are positioned around the horn hole; the two ends of the fourth connecting table are provided with first bosses 3121 which are parallel to the first lower frame edge and are flush with the outer wall surface of the second connecting table, and the detachable connection of the lower frame and the side frame is realized through the first bosses and the end parts of the second connecting table; the middle part of the fourth connecting platform is provided with a second boss 3122 parallel to the first lower frame edge and in a parallel and level state with the outer wall of the second connecting platform, and a second limit platform 3123 parallel to the fourth lower frame edge (in other embodiments, the second limit platform can also be directly arranged on the third lower frame edge), the installation of the keypad is realized through the middle part of the second boss and the second connecting platform, the second limit platform and the fourth lower frame edge form a second clamping groove 313 for accommodating the lower edge of the liquid crystal screen shell, furthermore, a second limit rib 3131 parallel to the fourth lower frame edge and positioned in the second clamping groove is arranged on the inner wall surface of the third lower frame edge, and the second limit rib is used for abutting against the bottom surface of the liquid crystal screen shell during the assembly. Furthermore, the second mounting platform is lower than the first lower frame edge, so that the back plate is convenient to assemble on the lower frame and is in a flush state. Meanwhile, the outer wall surface of the fourth lower frame edge is provided with the second positioning table 314 extending along the length direction thereof, and the side portion of the second positioning table is tilted upward to form the stop portion 3141.

A side frame positioned on the left side of the liquid crystal screen is defined as a left frame 401, a side frame positioned on the right side of the liquid crystal screen is defined as a right frame 402, and the left frame and the right frame adopt the same structure, so the left frame is taken as an example for detailed description.

The left frame is provided with a first side frame border 4011 and a second side frame border 4012 which are mutually perpendicular, a third installation table 4013, a third connection table 4014 and a third limit table 4015 which are all parallel to the second side frame border are arranged on the inner wall surface of the first side frame border in parallel along the direction close to the second side frame border, and the third installation table is lower than the first side frame border, so that the back plate is assembled on the left frame and then is in a parallel and level state; in order to realize the detachable connection of the left frame with the upper frame and the lower frame, third avoiding grooves 4016 are arranged on two sides of the third installation platform; the third limiting table and the second side frame edge form a third clamping groove 4017 used for accommodating the left edge of the liquid crystal display shell. Furthermore, a third limiting rib 4018 which is located in the third clamping groove and parallel to the second side frame edge is further arranged on the inner wall surface of the first side frame edge, and the third limiting rib is used for being abutted to the left edge of the liquid crystal display shell during assembly. Furthermore, two ends of the first side frame edge protrude out of the second side frame edge, and an L-shaped opening is formed in the lower end of the first side frame edge, so that a first pair of interfaces 4019 is formed in the upper end of the left frame, and a second pair of interfaces 4020 is formed in the lower end of the left frame. Furthermore, the two ends of the side wall surface of the second upper frame edge are respectively provided with a first step 2021, the two ends of the side wall surface of the fourth lower frame edge are respectively provided with a second step 3041, and the two ends of the second side frame edge are respectively provided with a third step matched with the first step or the second step.

The assembling process of the liquid crystal monitor adopting the combined frame comprises the following steps:

(1) the two panel protection rods 50 are arranged on two sides of the lower frame 30 through the matching of screws and second screw holes, the two horn assemblies 801 are arranged on two sides of the lower frame 30 through the matching of third screw holes 601 on a third connecting platform and a fourth connecting platform and the screws, key caps with different functions are arranged in corresponding mounting holes 309, and the key board 802 is arranged on the lower frame 30 through the matching of second bosses, fourth screw holes 602 in the middle of the second connecting platform and the screws; the lamp panel assembly 803 is assembled at the first mounting hole through the cooperation of the fifth screw holes 603 on the two sides of the first mounting hole and the screws;

(2) splicing the right frame 402 and the lower frame 30 to be in a flush state through a second butt joint, and fixedly connecting the right frame and the lower frame through the matching of a sixth screw hole 604 on the first boss, the second connecting table and the third connecting table and screws;

(3) pushing the liquid crystal screen 10 into the second clamping groove from the side surface until the right edge of the shell of the liquid crystal screen abuts against a third limiting rib in the third clamping groove; then, the left frame 401 and the lower frame 30 are spliced to be in a flush state through a second butt joint, and the left frame and the lower frame are fixedly connected through the matching of a first boss, a second connecting table, a sixth screw hole 604 in a third connecting table and screws; then, the upper frame and the two side frames are spliced to be in a parallel and level state through the first butt joint, the upper frame and the side frames are fixedly connected through the cooperation of seventh screw holes 605 and screws on the first connecting platform and the third connecting platform, and finally the liquid crystal screen is limited in a clamping groove formed by connecting the first clamping groove, the second clamping groove, the third clamping groove and the fourth clamping groove in the circumferential direction;

(4) the support plate 8041 and the PCB 804 are installed in a cavity formed by enclosing an upper frame, a lower frame and two side frames by the aid of eighth screw holes 606 on the first limiting table and the second limiting table and screws, the PCB 804 is electrically connected with the horn assembly 801, the key board 802, the liquid crystal screen 10 and the lamp panel assembly 803 respectively (cables for electrical connection are omitted in fig. 6 for clearly displaying installation positions of the components), the PCB, the horn assembly, the key board and the lamp panel assembly are basic components of an existing liquid crystal monitor, and structures of the components are not detailed herein;

(5) mounting the backboard through the cooperation of the ninth screw holes 607 on the first mounting table, the second mounting table and the two third mounting tables and the screws, and covering the cavity by the backboard after the mounting is finished (because the backboard is provided with through holes for leaking the signal interfaces and the power supply interfaces on the PCB, the backboard does not completely cover the cavity);

(6) the base 70 is mounted on the lower frame 30 through the second mounting holes 3011 on the first lower frame side.

In order to avoid the phenomenon that the monitoring effect is affected due to the fact that the display panel of the liquid crystal display is scratched or is adhered with dust, dirt and the like, the protection plate 90 is installed through the tenth screw hole 608 in the second side frame edge and the matching of the screws, the two positioning tables play a role in coarse limiting in the installation process, the stop portion allows an operator to tighten the screws without holding the protection plate by hands, and the assembly efficiency is improved.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the design and scope of the technical solutions of the present invention.

Claims

1. The utility model provides an adopt LCD monitor of combination formula frame, includes LCD screen (10), backplate, PCB board, lamp plate subassembly, loudspeaker subassembly, keypad, characterized by: the liquid crystal display panel is characterized by further comprising an upper frame (20), a lower frame (30) and two side frames (40), wherein the upper frame, the lower frame and the two side frames are made of aluminum profiles and are sequentially detachably connected along the circumferential direction to form a cavity; the upper frame is provided with a lamp panel assembly, the lower frame is provided with a loudspeaker assembly and a key board which are positioned in the cavity, and a key cap matched with the key board protrudes out of the lower frame; install the PCB board on PCB mounting panel respectively with LCD screen, loudspeaker subassembly, keypad, lamp plate subassembly electric connection.

2. The liquid crystal monitor using the built-up frame as set forth in claim 1, wherein: the upper frame (20) is provided with a first clamping groove (207), the lower frame (30) is provided with a second clamping groove (313), and the side frame (40) is provided with a third clamping groove (4017); the first clamping groove, the second clamping groove and the two third clamping grooves are connected in the circumferential direction to form clamping grooves used for limiting the liquid crystal screen.

3. The liquid crystal monitor using the built-up frame as set forth in claim 2, wherein: the upper frame is provided with a first upper frame edge (201) and a second upper frame edge (202) which are perpendicular to each other, a first limiting table (205) which is parallel to the second upper frame edge is arranged on the inner wall surface of the first upper frame edge, which is close to the second upper frame edge, the first limiting table and the second upper frame edge form a first clamping groove (207) which is used for containing the upper edge of the liquid crystal screen shell, and a first limiting rib (2071) which is used for abutting against the upper edge of the liquid crystal screen shell is arranged in the first clamping groove.

4. The liquid crystal monitor using the built-up frame as set forth in claim 2, wherein: the lower frame is provided with a third upper frame edge (303) and a fourth upper frame edge (304) which are perpendicular to each other, a second limiting table (3123) which is parallel to the fourth upper frame edge is arranged on the inner wall surface of the third upper frame edge, the second limiting table and the fourth upper frame edge form a second clamping groove (313) which is used for containing the lower edge of the liquid crystal screen shell, and a second limiting rib (3131) which is used for abutting against the lower edge of the liquid crystal screen shell is arranged in the second clamping groove.

5. The liquid crystal monitor using the built-up frame as set forth in claim 2, wherein: the side frame has mutually perpendicular's first side frame limit (4011), second side frame limit (4012), is equipped with the third spacing platform (4015) that is on a parallel with second side frame limit on the internal face that first side frame limit is close to second side frame limit, and the third spacing platform constitutes third draw-in groove (4017) and this third draw-in groove that are used for holding the side reason of LCD screen shell and is equipped with the third spacing muscle (4018) that is used for the side reason of butt LCD screen shell with second side frame limit.

6. The liquid crystal monitor using the built-up frame as set forth in claim 1, wherein: the upper frame is provided with a first upper frame edge and a second upper frame edge which are mutually vertical, the lower frame is provided with a first lower frame edge and a second lower frame edge which are mutually vertical, the side frame is provided with a first side frame edge and a second side frame edge which are mutually vertical, a first mounting table (203) which is parallel to the second upper frame edge is arranged on the inner wall surface of the first upper frame edge far away from the second upper frame edge, a second mounting table (305) which is parallel to the second lower frame edge is arranged on the inner wall surface of the first lower frame edge far away from the second lower frame edge, and a third mounting table (4013) which is parallel to the second side frame edge is arranged on the inner wall surface of the first side frame edge far away from the second side frame edge; the backboard is detachably connected with the first installation platform, the second installation platform and the two third installation platforms which are distributed along the circumferential direction.

7. The liquid crystal monitor using the built-up frame as set forth in claim 1, wherein: the upper frame is provided with a first upper frame edge and a second upper frame edge which are perpendicular to each other, the side frames are provided with a first side frame edge and a second side frame edge which are perpendicular to each other, a first connecting table (204) which is parallel to the second upper frame edge is arranged on the inner wall surface of the first upper frame edge, a third connecting table (4014) which is parallel to the second side frame edge is arranged on the inner wall surface of the first side frame edge, and the upper frame and the two side frames can be detachably connected through the matching of a screw hole formed in the end part of the first connecting table and the end part of the third connecting table and a screw.

8. The liquid crystal monitor using the built-up frame as set forth in claim 1, wherein: the lower frame is provided with a first lower frame edge and a second lower frame edge which are perpendicular to each other, a second connecting platform (306) which is parallel to the second lower frame edge is arranged on the inner wall surface of the first lower frame edge, a fourth connecting platform (312) which is parallel to the first lower frame edge is arranged on the inner wall surface of the second lower frame edge, and a first boss (3121) which is flush with the outer wall surface of the second connecting platform is arranged at the end part of the fourth connecting platform; the side frame has mutually perpendicular's first side frame limit, second side frame limit, is equipped with the third that is on a parallel with second side frame limit on the internal face of first side frame limit and connects platform (4014), connects the cooperation of the screw and the screw that set up on platform tip, third connection platform tip, the first boss through the second and can dismantle the lower frame with two side frames and be connected.

9. The liquid crystal monitor using the built-up frame as set forth in claim 1, wherein: the upper frame is provided with a second upper frame edge, the lower frame is provided with a fourth lower frame edge, the side frame is provided with a second side frame edge, the outer wall surface of the second upper frame edge is provided with a first positioning table (209) extending along the length direction of the second upper frame edge, the outer wall surface of the fourth lower frame edge is provided with a second positioning table (314) extending along the length direction of the fourth lower frame edge, and the side part of the second positioning table is provided with a stop part (3141); the protection plate (90) is limited between the first positioning table and the second positioning table and is detachably connected with the side frame through matching of screw holes and screws on the second side frame edge.

10. The liquid crystal monitor using the built-up frame as set forth in claim 1, wherein: the liquid crystal monitor panel further includes a base (70) mounted on the lower frame.