Back plate combined structure of liquid crystal module

Abstract

The invention provides a backboard composite structure of a liquid crystal module, solves the technical problems that an existing plastic rubber frame is generally separated by a boundary frame, a liquid crystal panel is mounted on the front side, a metal backboard is mounted on the rear side, but the joint of the boundary frame and the plastic rubber frame is easy to damage due to high pressure bearing and low structural strength, and can be widely applied to the field of liquid crystal modules. The periphery of the back plate is provided with a turnup which is perpendicular to the back plate and is turned outwards towards the front side of the back plate; a middle frame is installed outside the turned-over edge, a dividing frame dividing the middle frame into a front side and a rear side is arranged on the inner side of the middle frame, and a thickened convex edge is arranged on the dividing frame and used for improving the structural strength of the connecting portion of the dividing frame and the middle frame. The middle frame and the back plate are provided with matched installation assemblies, and each installation assembly is composed of a son buckle arranged on the corresponding turned-over edge and a mother buckle located on the middle frame.

Description

Technical Field

[0001] The invention belongs to the technical field of liquid crystal modules, and in particular relates to a backplane assembly structure of a liquid crystal module. Background Art

[0002] Backlight is an optical component in a liquid crystal display (LCD) device that can provide light for the liquid crystal display device. Currently, the main components of a backlight include a metal backplane (backcover), a light source, a light guide plate, an optical film, and a plastic mold frame (Mold Frame). The liquid crystal module includes a backlight, a liquid crystal panel (Panel), and a metal front frame (bezel).

[0003] Among them, the metal back plate, plastic frame and metal front frame in the liquid crystal module are respectively provided with connecting structures such as hooks, so that the metal back plate, plastic frame and metal front frame as the skeleton structure of the liquid crystal module are connected and fixed to each other to support other components of the liquid crystal module, such as light guide plate, optical film, light source, liquid crystal panel, etc.

[0004] The metal front frame and the metal back plate mainly support other components of the LCD module to ensure mechanical strength, and combine the components of the LCD module by connecting and fixing them to cooperate with the backlight function to ensure mechanical stability.

[0005] The existing plastic frame is generally separated by a boundary frame, with a liquid crystal panel installed on the front side and a metal back plate installed on the rear side. However, the connection between the boundary frame and the plastic frame is under great pressure and is easily damaged when the structural strength is not high. Summary of the invention

[0006] The purpose of the present invention is to solve the deficiencies of the above-mentioned technology and provide a backplane assembly structure of a liquid crystal module.

[0007] To this end, the present invention provides a back panel assembly structure of a liquid crystal module, including a back panel, wherein the back panel is provided with flanges perpendicular to the back panel and turned outward toward the front side of the back panel; a middle frame is installed outside the flanges, and a dividing frame is provided inside the middle frame to divide the middle frame into front and rear sides, and a thickened convex edge is provided on the dividing frame to increase the structural strength of the connection between the dividing frame and the middle frame.

[0008] Furthermore, matching installation components are provided on the middle frame and the back plate, and the installation components are composed of a sub-buckle provided on the flange and a female buckle located on the middle frame.

[0009] Furthermore, a plurality of first snap-fit ​​buckles and plug-in buckles are fixed on the flange, the first snap-fit ​​buckle is composed of an outward protrusion, the side of the protrusion close to the rear side of the back plate is a flat surface, and the side close to the front side of the back plate is a guiding inclined surface; the plug-in buckle is an external convex frame formed by directly extending the flange outward.

[0010] Furthermore, a plurality of first snap-fit ​​female buckles are fixed on the convex edge, and the first snap-fit ​​female buckles are composed of a closed hollow frame, the inner vertical surface of the hollow frame coincides with the outer boundary of the convex edge, and the shape of the hollow frame is adapted to the protrusion; the inner top wall of the hollow frame is a plane, and when the protrusion is snapped into the inside of the hollow frame, the plane of the protrusion and the plane of the inner top wall of the hollow frame can cooperate with each other to form a limit in the front and rear direction of the back plate; a plurality of plug-in female buckles are fixed on the rear side of the dividing frame, and the plug-in female buckles are vertical plates.

[0011] Furthermore, a pre-allowance groove is provided on the convex edge at the position of the plug-in female buckle, so that after the plug-in sub-buckle is inserted into the plug-in female buckle, the height of the convex edge and the height of the plug-in female buckle can be matched with the plug-in sub-buckle to form a limit in the left and right directions of the back plate.

[0012] The present invention provides a backplane assembly structure of a liquid crystal module, which has the following beneficial effects:

[0013] By adding a thickened convex edge, the structural strength of the connection between the dividing frame and the middle frame can be improved and not easily damaged; the protrusion is formed by bending or convex hull so that the plane boundary shape of the protrusion has a transition treatment similar to a chamfer, which can prevent the problem of vertical locking and chipping during assembly or disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the overall front side of the present invention;

[0015] Figure 2 This is a structural diagram of the front right side of the back plate and the middle frame of the present invention;

[0016] Figure 3 It is a structural diagram of the rear left side of the back plate and the middle frame of the present invention;

[0017] Figure 4 It is a structural diagram of the frame installation assembly of the present invention;

[0018] Figure 5 It is a structural diagram of the front bottom side of the back plate and the middle frame of the present invention;

[0019] Figure 6 This is the first embodiment of the matching of the mounting components of the back plate and the middle frame of the present invention;

[0020] Figure 7 This is the second embodiment of the matching of the mounting components of the back plate and the middle frame of the present invention;

[0021] Figure 8 This is the third implementation mode of the back plate and the middle frame mounting assembly matching the present invention;

[0022] Fig. 9 It is a structural diagram of the retracting rod of the present invention;

[0023] Markings in the figure: 1. back plate; 2. middle frame; 3. flange; 4. dividing frame; 5. front cover; 6. convex edge; 7. first snap-fit ​​buckle; 8. plug-in buckle; 9. push rod; 10. limit piece; 11. pre-allowed groove; 12. first snap-fit ​​mother buckle; 13. plug-in mother buckle; 14. second snap-fit ​​sub-buckle; 15. second snap-fit ​​mother buckle; 16. roller; 17. mounting hole; 18. protrusion; 19. extension plate; 20. first slot; 21. second slot; 22. folding piece; 23. slide groove; 24. retracting rod. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present invention. The methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercial products unless otherwise specified.

[0025] like Figure 1 , 3, the present invention provides a backplane assembly structure of a liquid crystal module, including a backplane 1, and the backplane 1 is provided with flanges 3 perpendicular to the backplane 1 and turned outward to the front side of the backplane 1. A middle frame 2 parallel to the flange 3 is installed outside the flange 3, and a dividing frame 4 is provided inside the middle frame 2 to divide the middle frame 2 into front and rear sides. Matching mounting components are provided on the middle frame 2 and the backplane 1, and the mounting components are composed of sub-buckles provided on the outside of the flange 3 and female buckles located on the rear and inner sides of the middle frame 2. A thickened convex edge 6 is provided on the rear side of the dividing frame 4 to increase the structural strength of the connection between the dividing frame 4 and the middle frame 2.

[0026] like Figure 2 , 3, 6, and 7, in one embodiment, a plurality of first snap-fit ​​buckles 7 and plug-fit buckles 8 are fixed to the left and right sides and the top side of the flange 3. The first snap-fit ​​buckle 7 is composed of an outward protrusion 18, and the side of the protrusion 18 close to the rear side of the back plate 1 is a flat surface, and the side close to the front side of the back plate 1 is a guiding inclined surface. The plug-fit buckle 8 is an outer convex frame formed by directly extending the flange 3 outward.

[0027] like Figure 3, 4, 6, and 7, a plurality of first engaging female buckles 12 are fixed on the flange 6, and the first engaging female buckles 12 are composed of a closed hollow frame, the inner side elevation of the hollow frame coincides with the outer boundary of the flange 6, and the shape of the hollow frame is adapted to the protrusion 18. The inner top wall of the hollow frame is a plane, and when the protrusion 18 is engaged with the inside of the hollow frame, the plane of the protrusion 18 and the plane of the inner top wall of the hollow frame can cooperate with each other to form a limit in the front and rear direction of the back plate 1. A plurality of plug-in female buckles 13 are fixed on the rear side of the dividing frame 4, and the plug-in female buckle 13 is a vertical plate, and the position is not on the flange 6. The flange 6 is also provided with a pre-allowed groove 11 at the position of the plug-in female buckle 13, so that after the plug-in sub-buckle 8 is inserted into the plug-in female buckle 13, the height of the flange 6 and the height of the plug-in female buckle 13 can cooperate with the plug-in sub-buckle 8 to form a limit in the left and right direction of the back plate 1.

[0028] like Figure 6 As shown, in one embodiment, the longitudinal height of the protrusion 18 of the first snap buckle 7 is greater than the height of the hollow frame of the first snap buckle 12, so that when the protrusion 18 of the first snap buckle 7 is snapped, only part of the structure enters the hollow frame of the first snap buckle 12, and the plane edge cooperates with the hollow frame to limit the position. Figure 7 As shown, in one embodiment, the longitudinal height of the protrusion 18 of the first snap-fit ​​sub-button 7 is smaller than the height of the hollow frame of the first snap-fit ​​female buckle 12, so that when the protrusion 18 of the first snap-fit ​​sub-button 7 is snapped, the entire structure enters the hollow frame of the first snap-fit ​​female buckle 12, and the plane edge cooperates with the hollow frame to limit the position.

[0029] like Figure 5 As shown, a plurality of second snap-fit ​​sub-buttons 14 are fixed to the bottom edge of the flange 3, and the second snap-fit ​​sub-buttons 14 are composed of an extension plate 19 protruding from the edge of the flange 3 and a convex block 18 arranged on the extension plate 19 and having the same shape as the first snap-fit ​​sub-button 7, and the guiding slope of the convex block 18 of the second snap-fit ​​sub-button 14 is close to the front side of the back plate 1. A plurality of second snap-fit ​​female buckles 15 are also arranged on the middle frame 2, and the second snap-fit ​​female buckles 15 are composed of a first slot 20 opened at the bottom edge of the middle frame 2 and a second slot 21 opened at the boundary frame 4. The shape of the first slot 20 matches the convex block 18, and the shape of the second slot 21 matches the protruding part of the extension plate 19.

[0030] When the back plate 1 and the middle frame 2 are combined, the middle frame 2 is installed from the front side to the rear side of the back plate 1, and three types of engagement are performed during the installation. First, the protrusion 18 of the first engagement buckle 7 enters the hollow frame of the first engagement buckle 12 through the guide slope, and the plane of the protrusion 18 fits with the plane of the hollow frame to form a limit in the front and rear direction of the back plate 1; second, the insertion buckle 8 is inserted into the pre-allowed groove 11, and the vertical plate and the outer convex frame fit together to form a limit in the left and right direction of the back plate 1; third, the protrusion 18 of the second engagement buckle 15 enters the first card slot 20 through the guide slope, and the extension plate 19 enters the second card slot 21 to form a limit in the up and down direction of the back plate 1.

[0031] like Figure 8 As shown, in one embodiment, a plurality of first snap-fit ​​buckles 7 are fixed inside the left and right sides and the top side of the back plate 1, and the length of the first snap-fit ​​buckle 7 from the flange 3 is 2 cm. The first snap-fit ​​buckle 7 is composed of two folding pieces 22 with two ends arranged opposite to each other, and the two folding pieces 22 are arranged in a mirror image and the ends gradually approach each other. A plurality of first snap-fit ​​female buckles 12 are fixed to the rear side of the dividing frame 4, and the first snap-fit ​​female buckle 12 is a T-shaped piece, and the length of its transverse portion is greater than the distance between the ends of the two folding pieces 22. The contact surface between the transverse portion of the T-shaped piece and the transverse portion of the two folding pieces 22 is provided with a guide slope.

[0032] When the back panel 1 and the middle frame 2 are combined, the middle frame 2 is installed from the front side to the rear side of the back panel 1. Under the action of the guiding inclined surface, the first locking female buckle 12 causes the folding piece 22 to deform to expand outward, and then enters into the interior of the lateral parts of the two folding pieces 22. The lateral part of the T-shaped piece cannot be directly separated from the lateral parts of the two folding pieces 22, forming a limit in the front and rear direction of the back panel 1.

[0033] like Figure 8 , as shown in FIG9 , the inner sides of the oblique parts of the two folding pieces 22 are provided with slide grooves 23, and the two slide grooves 23 are matched with the retracting rods 24 for sliding, and rollers 16 are arranged at both ends of the retracting rods 24. The retracting rods 24 are fixed with push rods 9 in the front-back direction of the back plate 1, and the push rods 9 are arranged through the back plate 1. A pressing piece is fixed on the end of the push rods 9 located outside the back plate 1 to increase the pressing area and facilitate the retracting rods 24 to move along the slide grooves 23. The exposed part of the push rods 9 located outside the back plate 1 can be provided with some decorative structures to assist in covering and improve the aesthetics of the product.

[0034] When the back plate 1 and the middle frame 2 are disassembled, the pressing piece is pressed inwardly, so that the push rod 9 drives the retracting rod 24 to move along the slide groove 23 toward the front side of the back plate 1, so that the two folding pieces 22 expand outward, and the lateral part of the T-shaped piece is separated from the lateral part of the two folding pieces 22.

[0035] like Figure 6As shown in FIG. 7 , in one embodiment, the protrusion 18 is formed by bending or convex hulling so that the plane boundary shape of the protrusion 18 is a transition treatment similar to a chamfer, which can prevent the problem of vertical engagement and chipping during assembly or disassembly.

[0036] like Figure 1 As shown, a front cover plate 5 is also provided at the bottom of the middle frame 2. The front cover plate 5 is a right-angle plate, one side of which is located at the front side of the middle frame 2 and the other side is located at the bottom of the middle frame 2. Figure 5 As shown, a plurality of mounting holes 17 are provided on the bottom edge of the front cover plate 5 and the bottom edge of the middle frame 2 for combining the middle frame 2 and the front cover plate 5 .

[0037] like Figure 3 As shown in Figure 4, a plurality of limit members 10 are fixed on the boundary frame 4, and the vertical surface of the limit member 10 coincides with the vertical surface of the convex edge 6, which is used to perform secondary limiting on the part of the flange 3 of the back plate 1 where no mounting components are set, balance the pressure on various parts of the flange 3, and solve the problem of insufficient fit between the middle frame 2 and the back plate 1 due to errors in the production process.

[0038] In the description of the present invention, it is necessary to understand that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] However, what is described above is only a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the present invention should still fall within the scope covered by the claims of the present invention.

Claims

1. A backplane assembly structure of a liquid crystal module, comprising a backplane, wherein the backplane is provided with flanges perpendicular to the backplane and turned outward toward the front side of the backplane; a middle frame is installed outside the flanges, and a dividing frame is provided inside the middle frame to divide the middle frame into front and rear sides, wherein: A thickened convex edge is provided on the boundary frame to increase the structural strength of the connection between the boundary frame and the middle frame.

2. The back panel assembly structure of a liquid crystal module according to claim 1, characterized in that: Matching installation components are arranged on the middle frame and the back plate, and the installation components are composed of sub-buckles arranged on the flange and female buckles located on the middle frame.

3. The back panel assembly structure of the liquid crystal module according to claim 2, characterized in that: A plurality of first snap-fit ​​buckles and plug-in buckles are fixed on the flange. The first snap-fit ​​buckle is composed of an outward protrusion, the side of the protrusion close to the rear side of the back plate is a flat surface, and the side close to the front side of the back plate is a guiding inclined surface; the plug-in buckle is an outer convex frame formed by directly extending the flange outward.

4. The back panel assembly structure of the liquid crystal module according to claim 3, characterized in that: A plurality of first snap-fit ​​female buckles are fixed on the convex edge, and the first snap-fit ​​female buckles are composed of a closed hollow frame. The inner vertical surface of the hollow frame coincides with the outer boundary of the convex edge, and the shape of the hollow frame is adapted to the protrusion; the inner top wall of the hollow frame is a plane, and when the protrusion is snapped into the inside of the hollow frame, the plane of the protrusion and the plane of the inner top wall of the hollow frame can cooperate with each other to form a limit in the front and rear direction of the back plate; a plurality of plug-in female buckles are fixed on the rear side of the dividing frame, and the plug-in female buckles are vertical plates.

5. The back panel assembly structure of the liquid crystal module according to claim 4, characterized in that: At the position of the female plug-in buckle, a pre-allowance groove is also provided on the convex edge, so that after the plug-in buckle is inserted into the female plug-in buckle, the height of the convex edge and the height of the female plug-in buckle can be matched with the plug-in buckle to form a limit in the left and right directions of the back panel.

6. The back panel assembly structure of the liquid crystal module according to claim 2, characterized in that: A plurality of first snap-fit ​​buckles are fixed inside the flange of the back plate. The first snap-fit ​​buckles are composed of two folding pieces with two ends arranged opposite to each other. The two folding pieces are arranged in a mirror image and the ends are gradually approached.

7. The back panel assembly structure of the liquid crystal module according to claim 6, characterized in that: A plurality of first locking female buckles are fixed on the boundary frame. The first locking female buckles are T-shaped pieces, and the length of the transverse portion thereof is greater than the distance between the ends of the two folding pieces.

8. The back panel assembly structure of the liquid crystal module according to claim 7, characterized in that: Slide grooves are provided on the inner sides of the oblique parts of the two folding parts. Retracting rods slide in the two slide grooves. Rollers are arranged at both ends of the retracting rods. Push rods are fixed to the retracting rods in the front and rear directions of the back plate, and the push rods penetrate the back plate.

9. The back panel assembly structure of the liquid crystal module according to claim 4, characterized in that: The longitudinal height of the protrusion of the first snap-fit ​​sub-button is greater than the height of the hollow frame of the first snap-fit ​​female buckle, so that when the protrusion of the first snap-fit ​​sub-button is snapped, only a part of the structure enters the hollow frame of the first snap-fit ​​female buckle, and the plane edge cooperates with the hollow frame to limit the position.

10. The back panel assembly structure of the liquid crystal module according to claim 2, characterized in that: A plurality of limiting members are also fixed on the boundary frame, and the vertical surfaces of the limiting members coincide with the vertical surfaces of the convex edges, so as to perform secondary limiting on the parts of the back panel flange where no mounting components are arranged.

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