A fixing structure device for liquid crystal display

Abstract

The utility model relates to the shielding case, back fixed plate and frame field of liquid crystal display, a kind of fixed structure device of liquid crystal display, including metal shielding case and metal plate of uniform rectangular shape, metal shielding case and metal plate longitudinal middle contact one end shielding case front wall is provided with several groups of first front wall buckle hole and shielding case first resistance hook;Metal plate longitudinal middle is provided with the first metal plate hook of inverted letter L type with the equal number and corresponding position of first front wall buckle hole;Metal shielding case and metal plate are inserted first front wall buckle hole by the first metal plate hook and are connected together with shielding case first resistance hook resistance hook;First metal plate hook, first front wall buckle hole and shielding case first resistance hook play the role of quick assembly. Apparent beneficial effect is time-saving and cost-saving, while it can improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the fields of shielding covers, rear fixing plates and frames for liquid crystal displays, and particularly to a fixing structure device for liquid crystal displays. Background Technology

[0002] like Figure 1 As shown, in the prior art, LCD displays are designed with a metal shielding cover 500 for electromagnetic interference shielding and component structural protection; typically, the metal shielding cover 500 is threadedly connected to the existing metal plate 600 in front of the backlight via a screw assembly 700. However, this method of assembly is slow, inefficient, and unsuitable for current market demands.

[0003] Therefore, it is necessary to provide a fixing structure device for a liquid crystal display screen to solve the above-mentioned technical problems. Utility Model Content

[0004] To overcome the problems of slow assembly speed, low work efficiency, and unsuitability for current market demands caused by the existing method of connecting the metal shield to the existing metal plate in front of the backlight via screw assemblies, this utility model provides a fixing structure device for a liquid crystal display screen.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solutions:

[0006] A fixing structure device for a liquid crystal display screen includes a rectangular metal shield and a metal plate. The front wall of the metal shield, at one end where it contacts the metal plate longitudinally, is provided with a plurality of first front wall snap holes and first shield abutment hooks. The metal plate has a first metal plate hook in the longitudinal middle, equal in number and corresponding in position to the first front wall snap holes. The metal shield and the metal plate are connected by the first metal plate hooks through the first front wall snap holes and abutted against the first shield abutment hooks. The first metal plate hooks, first front wall snap holes, and first shield abutment hooks serve to facilitate rapid assembly.

[0007] As a further embodiment of this utility model, it also includes an outer metal frame, wherein the three ends of the metal shield, excluding the front wall of the shield, are snapped together with three of the frame edges of the outer metal frame.

[0008] As a further embodiment of this utility model: the two end shielding sidewalls adjacent to the front wall of the metal shielding cover are provided with a plurality of shielding cover side hooks; the two metal frame sides of the outer metal frame that are in contact with the sidewall of the shielding cover are provided with a plurality of side-mounted buckle holes equal in number and corresponding in position to the shielding cover side hooks; the metal shielding cover and the outer metal frame are fastened together by the shielding cover side hooks and the side-mounted buckle holes.

[0009] As a further embodiment of this utility model: the rear wall of the metal shielding cover, which is separated from the front wall of the shielding cover, is provided with a plurality of rear wall snap-fit ​​holes; the rear side of the outer metal frame, which contacts the rear wall of the shielding cover, is provided with a plurality of upper rear hooks, which are equal in number and corresponding in position to the snap-fit ​​holes of the rear wall of the shielding cover; the metal shielding cover is provided with both the side hooks and the rear wall snap-fit ​​holes, and the holes and hooks are provided simultaneously with the hooks and holes of the outer metal frame, so as to make the snap-fit ​​more secure.

[0010] As a further embodiment of this utility model: the rear side of the metal frame includes a rear lower side disposed on the lower side of the outer layer and a rear upper side disposed on the upper side of the inner layer, the two forming a stepped rear step; the rear upper side is snapped to the rear wall of the shielding cover, and the rear lower side is snapped to the inner layer fixing frame.

[0011] As a further embodiment of this utility model: the hook surface of the upper rear hook and the lower edge of the buckle hole on the rear wall of the shielding cover have a buckle distance L1 of 0.05mm-0.10mm.

[0012] As a further embodiment of this utility model: a buckle protrusion is provided on the upper inner side of the buckle hole on the side, and the buckle protrusion serves to increase the buckle's firmness.

[0013] As a further embodiment of this utility model: the hook surface of the shielding cover side hook and the platform surface of the buckle protrusion have a buckling distance L2 of 0.05mm-0.10mm.

[0014] As a further embodiment of this utility model: a set of symmetrical second and third metal plate hooks are provided on the virtual straight line where the plurality of first metal plate hooks of the metal plate are located; second and third front wall buckle holes corresponding to the second and third metal plate hooks respectively are provided on the front wall of the shielding cover, respectively, with the second and third metal plate hooks intersecting non-centrally on the left and right sides; and second and third shielding cover abutting hooks are provided on the front wall of the shielding cover, respectively, abutting against the second and third metal plate hooks; The distance L4 between the second metal plate hook and the second front wall snap hole facing each other at the end closest to the front wall of the shielding cover is 0.10mm to 0.20mm; the distance L5 between the third metal plate hook and the third front wall snap hole facing each other at the end closest to the front wall of the shielding cover is 0.10mm to 0.20mm; the second metal plate hook and the third metal plate hook are respectively inserted into the corresponding second front wall snap hole and third front wall snap hole in the left and right directions, respectively, to prevent the metal shielding cover and the metal plate from being assembled incorrectly.

[0015] As a further embodiment of this utility model: the distance L3 between the two opposing surfaces of the second metal plate hook and the second abutting hook of the shielding cover is 0.05mm to 0.15mm.

[0016] The advantages of the fixing structure device for a liquid crystal display screen disclosed in this utility model are as follows:

[0017] By changing the existing screw-connected structure between the metal shield and the metal plate to a mating plug-in connection structure, assembly can be completed in one step, eliminating the tedious step of fixing each screw individually. This saves time and costs, and improves work efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the assembly of an existing metal shield and an existing metal plate;

[0019] Figure 2 This is a three-dimensional structural view of the fixing structure device for the liquid crystal display screen of this utility model;

[0020] Figure 3 This is a utility model Figure 2 Enlarged view of section A in the middle;

[0021] Figure 4 This is a rear view of the present invention;

[0022] Figure 5 This is a utility model Figure 4 Enlarged view of section B;

[0023] Figure 6 This is a utility model Figure 4 Enlarged view of section C;

[0024] Figure 7 This is the left view of this utility model;

[0025] Figure 8 This is a utility model Figure 7 Enlarged view of section D;

[0026] Figure 9 This is the front view of this utility model;

[0027] Figure 10 This is a utility model Figure 9 Enlarged view of section E in the middle;

[0028] Figure 11 This is a utility model Figure 9 Enlarged view of section F in the middle;

[0029] Figure 12 This is a first-view perspective structural perspective of the metal shielding cover of this utility model;

[0030] Figure 13 This is a utility model Figure 12 Enlarged view of section G in the middle;

[0031] Figure 14 This is a second-view perspective structural perspective view of the metal shielding cover of this utility model;

[0032] Figure 15 This is a three-dimensional view of the metal plate structure of this utility model;

[0033] Figure 16 This is a first-view perspective structural perspective of the outer metal frame of this utility model;

[0034] Figure 17 This is a utility model Figure 16 Enlarged view of the middle H section;

[0035] Figure 18 This is a second-view perspective structural perspective view of the outer metal frame of this utility model;

[0036] Figure 19 This is a schematic diagram of the use of this utility model;

[0037] Figure 20 This is a utility model Figure 19 Enlarged view of the middle section (I).

[0038] In the diagram: 100 - Metal shielding cover, 110 - Shielding cover body, 11a - Shielding cover positioning hole, 11b - Reinforcing rib, 120 - Front wall of shielding cover, 12a - First front wall snap hole, 12b - First shielding cover support hook, 12c - Second front wall snap hole, 12d - Third front wall snap hole, 12e - Second shielding cover support hook, 12f - Third shielding cover support hook, 130 - Side wall of shielding cover, 13a - Side hook of shielding cover, 140 - Rear wall of shielding cover, 14a - Rear wall snap hole of shielding cover, 200 - Metal plate, 210 - Metal plate body, 21a - Metal plate limiting post, 21b - First metal plate hook. 21c-Second metal plate hook, 21d-Third metal plate hook, 220-Metal plate end face, 22a-End face hook, 300-Outer metal frame, 310-Metal frame side, 31a-Side upper buckle hole, 31b-Side lower buckle hole, 31c-Buckling boss, 320-Front side of metal frame, 32a-Front buckle hole, 330-Rear side of metal frame, 331-Rear lower side, 331a-Rear lower side buckle hole, 332-Rear upper side, 332a-Rear upper side hook, 333-Rear step, 400-Inner fixing frame, 500-Existing metal shield, 600-Existing metal plate, 700-Screw assembly. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of a fixing structure device for a liquid crystal display screen, in conjunction with the accompanying drawings and embodiments, provides further insight. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit its scope.

[0040] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "center," "longitudinal," "lateral," "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] like Figure 2 , Figure 3 , Figure 15 As shown, a fixing structure device for a liquid crystal display screen includes a rectangular metal shield 100, a metal plate 200, and an outer metal frame 300. The front wall 120 of the shield 100, which is in longitudinal contact with the metal plate 200, is provided with several sets of first front wall snap holes 12a and first shield abutment hooks 12b. The metal plate 200 is provided with inverted L-shaped first metal plate hooks 21b, equal in number and corresponding in position to the first front wall snap holes 12a. The metal shield 100 and the metal plate 200 are connected by the first metal plate hooks 21b through the first front wall snap holes 12a and abut against the first shield abutment hooks 12b. The first metal plate hooks 21b, the first front wall snap holes 12a, and the shield abutment hooks 12b serve to facilitate rapid assembly.

[0043] Specifically, the metal shielding cover 100 includes a shielding cover body 110, a front shielding cover 120 and a rear shielding cover 140 at the front and back respectively, and shielding cover side walls 130 on both sides; the shielding cover body 110 is provided with shielding cover positioning holes 11a and reinforcing ribs 11b; the metal plate 200 includes a rectangular metal plate body 210 and a metal plate end face 220, and metal plate limiting posts 21a are provided at two corners of the metal plate body 210 opposite to the direction of the first metal plate hook 21b. In use, the shielding cover positioning holes 11a are used to position and assemble the metal plate limiting posts 21a. At the same time, a plurality of end face hooks 22a are provided around the metal plate end face 220, and the metal plate 200 is also connected to the outer metal frame 300 by means of the end face hooks 22a.

[0044] By changing the existing threaded connection structure between the metal shield 500 and the existing metal plate 600 via screw assembly 700 to a plug-in and snap-fit ​​connection structure between the metal shield 100, metal plate 200, and outer metal frame 300, assembly can be completed in one step, eliminating the tedious step of fixing each screw individually. This saves time and costs, greatly improves work efficiency, allows for rapid order response, and meets market demands.

[0045] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the three ends of the metal shield 100, excluding the front wall 120 of the shield, are snapped together with three of the frame edges of the outer metal frame 300.

[0046] like Figure 2 , Figure 3 , Figure 12 , Figure 13 , Figure 14 , Figure 16 , Figure 18 As shown, the metal shielding cover 100 has several shielding cover side hooks 13a on the two end shielding cover sidewalls 130 adjacent to the shielding cover front wall 120; the outer metal frame 300 has several side-mounted buckle holes 31a on the two metal frame sides 310 that are in contact with the shielding cover sidewalls 130, which are equal in number and corresponding in position to the shielding cover side hooks 13a; the metal shielding cover 100 and the outer metal frame 300 are fastened together by the shielding cover side hooks 13a and the side-mounted buckle holes 31a.

[0047] Specifically, the outer metal frame 300 includes two metal frame side edges 310, a front metal frame front edge 320, and a rear metal frame rear edge 330. The lower edge of the metal frame side edge 310 is provided with a plurality of side lower buckle holes 31b, and the front metal frame front edge 320 is provided with a front buckle hole 32a.

[0048] like Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 , Figure 18 As shown, the rear wall 140 of the metal shield 100, which is separated from the front wall 120 of the shield 100, is provided with a plurality of rear wall snap-fit ​​holes 14a; the rear side 330 of the outer metal frame 300, which contacts the rear wall 140 of the shield 100, is provided with a plurality of upper rear hooks 332a, which are equal in number and corresponding in position to the snap-fit ​​holes 14a of the shield 100; the metal shield 100 is provided with both the side hooks 13a and the rear wall snap-fit ​​holes 14a of the shield 100, and the holes and hooks are provided at the same time as the hooks and holes of the outer metal frame 300, so as to make the snap-fit ​​more secure.

[0049] Preferably, in the vertical direction, the two surfaces of the shield side hook 13a and the rear upper hook 332a are arranged facing each other, resulting in a more secure latching effect.

[0050] like Figure 16 , Figure 18 , Figure 19 , Figure 20 As shown, the rear side 330 of the metal frame includes a rear lower side 331 located on the lower side of the outer layer and a rear upper side 332 located on the upper side of the inner layer, which together form a stepped rear step 333; the rear upper side 332 is snapped to the rear wall 140 of the shielding cover, and the rear lower side 331 is snapped to the inner layer fixing frame 400.

[0051] Specifically, the lower rear edge 331 is provided with a plurality of lower rear snap-fit ​​holes 331a that match the hooks (not shown in the figure) on the outer circumferential surface of the inner fixing frame 400. In use, firstly, the metal plate 200 is snapped together with the inner fixing frame 400 using the end face hooks 22a and the snap-fit ​​holes (not shown in the figure) on the outer circumferential surface of the inner fixing frame 400; then, the inner fixing frame 400 is snapped together with the outer metal frame 300 using the hooks (not shown in the figure) on the outer circumferential surface of the inner fixing frame 400, the front snap-fit ​​hole 32a, the side lower snap-fit ​​hole 31b, and the lower rear snap-fit ​​hole 331a; finally, the shielding cover positioning hole 11a, the first front wall snap-fit ​​hole 12a, and the screen... The first abutment hook 12b and the first metal plate hook 21b of the shielding cover insert and hold the metal shielding cover 100 and the metal plate 200 together; finally, the metal shielding cover 100 and the outer metal frame 300 are fastened together by the shielding cover side hook 13a and the side upper hook hole 31a, and the shielding cover rear wall hook hole 14a and the rear upper hook 332a. Of course, the metal shielding cover 100 first inserts and holds the metal plate 200 together, and then fastens it together with the outer metal frame 300 in one go, which is simple to operate. The rear step 333 and the rear upper edge 332 are set to make the rear wall 140 and the rear lower edge 331 of the shielding cover flush in the vertical direction after fixing, so as to achieve an aesthetic effect.

[0052] like Figure 4 , Figure 5 As shown, the hook surface of the upper rear hook 332a and the lower edge of the buckle hole 14a on the rear wall of the shielding cover have buckle distances L1 of 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, and 0.10mm. Controlling the assembly dimensions helps to ensure easy assembly while also ensuring that the metal shielding cover 100 is firmly connected and snapped together with the metal plate 200 and the outer metal frame 300 without loosening.

[0053] like Figure 16 , Figure 17 , Figure 18 As shown, a snap-fit ​​boss 31c is provided on the upper inner side of the snap-fit ​​hole 31a on the side, which increases the snap-fit's firmness. The snap-fit ​​boss 31c can be formed by cutting the two upper corners of the snap-fit ​​hole 31a on the side from bottom to top and then bending them inward.

[0054] like Figure 7 , Figure 8 As shown, the hook surface of the shielding cover side hook 13a and the platform surface of the buckle protrusion 31c have buckling distances L2 of 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, and 0.10mm. Controlling the assembly dimensions helps to strengthen the buckling strength between the metal shielding cover 100 and the outer metal frame 300 and improve the ease of disassembly.

[0055] like Figure 9 , Figure 10 , Figure 11 As shown, a set of symmetrical second metal plate hooks 21c and third metal plate hooks 21d are arranged on a virtual straight line where several first metal plate hooks 21b of the metal plate 200 are located; second front wall latching holes 12c and third front wall latching holes 12d are respectively provided on the front wall 120 of the shielding cover, which are non-centered to the left and right; and second shielding cover abutting hook 12e and third shielding cover abutting hook 12f are provided on the front wall 120 of the shielding cover, which abut against the second metal plate hooks 21c and third metal plate hooks 21d respectively; the distance L4 between the two opposing surfaces of the second metal plate hooks 21c and the second front wall latching holes 12c toward their nearest ends to the front wall 120 of the shielding cover is 0.10mm, 0.11mm, and 0. The dimensions are 12mm, 0.13mm, 0.14mm, 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, and 0.20mm; the distance L5 between the two opposing surfaces of the third metal plate hook 21d and the third front wall buckle hole 12d towards the end closest to the front wall 120 of the shielding cover is 0.10mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, and 0.20mm; the second metal plate hook 21c and the third metal plate hook 21d are respectively inserted into the corresponding second front wall buckle hole 12c and third front wall buckle hole 12d in the left and right directions, which serves to prevent the metal shielding cover 100 from being assembled with the metal plate 200 by mistake.

[0056] The first front wall latching hole 12a, the second front wall latching hole 12c, and the third front wall latching hole 12d have the same structure; the first shielding cover abutment hook 12b, the second shielding cover abutment hook 12e, and the third shielding cover abutment hook 12f have the same structure; the first metal plate latch hook 21b, the second metal plate latch hook 21c, and the third metal plate latch hook 21d have the same structure; the only difference is that the second metal plate latch hook 21c and the second shielding cover abutment hook 12e are inserted into the second front wall latching hole 12c at different left and right positions than the first metal plate latch hook 21b and the first shielding cover abutment hook 12b are inserted into the first front wall latching hole 12a at different left and right positions than the first metal plate latch hook 21b and the first shielding cover abutment hook 12b are inserted into the first front wall latching hole 12a at different left and right positions.

[0057] like Figure 9 , Figure 10 , Figure 11 As shown, the abutment distance L3 between the two opposing surfaces of the second metal plate hook 21c and the shielding cover second abutment hook 12e is 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.10mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm and 0.15mm.

[0058] That is, the contact distance L3 between the first metal plate hook 21b and the first abutting hook 12b of the shielding cover is 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.10mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, and 0.15mm. The contact distance L3 between the third metal plate hook 21d and the third abutting hook 12f of the shielding cover is 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.10mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, and 0.15mm.

[0059] The above description of the utility model is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A fixing structure device for a liquid crystal display screen, comprising a rectangular metal shield (100) and a metal plate (200), characterized in that: The front wall (120) of the metal shield (100) is provided with a plurality of first front wall snap holes (12a) and shield first abutment hooks (12b) on one end of the metal shield (100) that contacts the metal plate (200) longitudinally at the middle; the metal plate (200) is provided with a first metal plate hook (21b) in the shape of an inverted letter L, which is equal in number and corresponding in position to the first front wall snap holes (12a); the metal shield (100) and the metal plate (200) are connected together by inserting the first metal plate hooks (21b) into the first front wall snap holes (12a) and abutting against the shield first abutment hooks (12b); the first metal plate hooks (21b), the first front wall snap holes (12a) and the shield first abutment hooks (12b) serve to facilitate quick assembly.

2. The fixing structure device for the liquid crystal display screen according to claim 1, characterized in that: It also includes an outer metal frame (300), and the three ends of the metal shield (100) other than the front wall (120) of the shield are snapped together with three of the frame edges of the outer metal frame (300).

3. The fixing structure device for the liquid crystal display screen according to claim 2, characterized in that: The metal shield (100) has several shield side hooks (13a) on the two end shield side walls (130) adjacent to the front wall (120) of the shield; the outer metal frame (300) has several side buckle holes (31a) on the two metal frame sides (310) that are in contact with the shield side walls (130), which are equal in number and corresponding in position to the shield side hooks (13a); the metal shield (100) and the outer metal frame (300) are fastened together by the shield side hooks (13a) and the side buckle holes (31a).

4. The fixing structure device for the liquid crystal display screen according to claim 3, characterized in that: The metal shield (100) has a plurality of shield rear wall snap holes (14a) on the end shield rear wall (140) that is separated from the shield front wall (120); the outer metal frame (300) has a plurality of rear upper edge hooks (332a) on the rear side (330) of the metal frame that contacts the shield rear wall (140), which are equal in number and corresponding in position to the shield rear wall snap holes (14a); the metal shield (100) has both shield side hooks (13a) and shield rear wall snap holes (14a), and the holes and hooks are provided at the same time as the hooks and holes of the outer metal frame (300), which makes the snapping more secure.

5. The fixing structure device for the liquid crystal display screen according to claim 4, characterized in that: The rear side (330) of the metal frame includes a rear lower side (331) located on the lower side of the outer layer and a rear upper side (332) located on the upper side of the inner layer, which together form a stepped rear step (333); the rear upper side (332) is snapped to the rear wall (140) of the shielding cover, and the rear lower side (331) is snapped to the inner layer fixing frame (400).

6. The fixing structure device for the liquid crystal display screen according to claim 5, characterized in that: The hook surface of the upper rear hook (332a) and the lower edge of the buckle hole (14a) on the rear wall of the shielding cover have a buckle distance L1 of 0.05mm-0.10mm.

7. The fixing structure device for the liquid crystal display screen according to any one of claims 3 to 6, characterized in that: A buckle protrusion (31c) is provided on the upper inner side of the buckle hole (31a) on the side, and the buckle protrusion (31c) serves to increase the buckle's firmness.

8. The fixing structure device for the liquid crystal display screen according to claim 7, characterized in that: The hook surface of the shield side hook (13a) and the platform surface of the buckle protrusion (31c) have a buckling distance L2 of 0.05mm-0.10mm.

9. The fixing structure device for a liquid crystal display screen according to claim 8, characterized in that: A set of symmetrical second metal plate hooks (21c) and third metal plate hooks (21d) are provided on a virtual straight line where a plurality of first metal plate hooks (21b) of the metal plate (200) are located; on the front wall (120) of the shield, the second metal plate hooks (21c) and third metal plate hooks (21d) are respectively provided with second front wall buckle holes (12c) and third front wall buckle holes (12d) that are respectively inserted into the left and right sides of the non-central part of the second front wall hooks (21c) and third front wall buckle holes (12d); and on the front wall (120) of the shield, the shield second abutment hook (12e) and shield third abutment hook (12f) are provided to abut against the second metal plate hooks (21c) and third metal plate hooks (21d) respectively; the first The distance L4 between the two opposing surfaces of the second metal plate hook (21c) and the second front wall snap hole (12c) facing the end closest to the front wall (120) of the shielding cover is 0.10mm to 0.20mm; the distance L5 between the two opposing surfaces of the third metal plate hook (21d) and the third front wall snap hole (12d) facing the end closest to the front wall (120) of the shielding cover is 0.10mm to 0.20mm; the second metal plate hook (21c) and the third metal plate hook (21d) are respectively inserted into the corresponding second front wall snap hole (12c) and third front wall snap hole (12d) in the left and right directions respectively, which serves to prevent the metal shielding cover (100) and the metal plate (200) from being assembled incorrectly.

10. The fixing structure device for the liquid crystal display screen according to claim 9, characterized in that: The distance L3 between the two opposing surfaces of the second metal plate hook (21c) and the shielding cover second abutment hook (12e) is 0.05mm to 0.15mm.

Images