Rapid assembling device for backlight iron frame back shell and LED frame of liquid crystal display screen

Abstract

A rapid assembling device for an iron frame back shell and an LED frame of a liquid crystal display screen backlight comprises a device body and a pressing plate. The appearance of the periphery of the device body is of a quadrilateral or circular or triangular or oval plate-shaped structure, a main body structure in the device body is a rectangular trapezoidal structure cavity, and the thickness H of the device body is larger than that of an LED frame; the inner edges of the top of the trapezoid structure cavity are larger than the outer edges of the corresponding edges of the LED frame, the inner edges of the bottom of the trapezoid structure cavity are smaller than the outer edges of the corresponding edges of the LED frame, and positioning grooves are correspondingly formed in the inner sides of the four edges of the device body. The outer edge of the pressing plate is the same as a rectangle formed by the inner edges of the bottom of the trapezoidal structure cavity; the outer edge of the pressing plate is provided with positioning columns which can slide in cooperation with positioning grooves formed in the inner sides of the four edges of the device body. The technical progress is to overcome the defects that the efficiency is low and the quality cannot be guaranteed when the LED frame is manually mounted into the iron frame back shell.

Description

Technical Field

[0001] This technology relates to the production and assembly equipment and technology for liquid crystal displays, and particularly to the assembly technology and equipment for the backlight layer. Technical background:

[0002] Currently, most LCD displays mainly consist of a glass cover, a touch function layer, a display screen, and a backlight layer. The backlight layer assembly can be further subdivided into a reflective film, an LED frame, a metal frame back cover, and other components. The reflective film, LED frame, and metal frame back cover are interconnected as follows: the reflective film is mounted on the LED frame, and the LED frame is snapped into the metal frame back cover, tightly encasing the LED frame. The metal frame back cover has locking holes on its sidewalls, and the LED frame has locking lugs that mate with these holes, resulting in a seamless and tight fit between the metal frame back cover and the LED frame. Currently, the LED frame and metal frame back cover are mostly assembled manually. When manually installing the LED frame into the metal frame back cover, force is applied to the LED frame using bending, folding, and squeezing methods. Therefore, this process suffers from poor quality and low efficiency. Utility Model Content

[0003] The purpose of this technology is to address the shortcomings of the existing technologies mentioned above by designing a device that allows the LED frame to be installed into the iron frame back shell safely and quickly.

[0004] This technology is a quick assembly device for the iron frame back cover and LED frame of a liquid crystal display backlight. The device includes a device body 1 and a pressure plate 2. The device body 1 has a quadrilateral, circular, triangular or elliptical plate-like structure on all four sides. The main structure inside the device body 1 is a rectangular trapezoidal cavity 10. The thickness H of the device body 1 is greater than the thickness of the LED frame. The inner sides of the top of the trapezoidal cavity 10 are larger than the outer sides of the corresponding sides of the LED frame, and the inner sides of the bottom of the trapezoidal cavity are smaller than the outer sides of the corresponding sides of the LED frame. The inner sides of the four sides of the device body 1 are provided with positioning grooves 12. The outer edge of the pressure plate 2 and the inner sides of the bottom of the trapezoidal cavity form the same rectangle. The outer edge of the pressure plate 2 is provided with positioning posts 20 that can slide in conjunction with the positioning grooves 12 on the inner sides of the four sides of the device body 1.

[0005] Furthermore, the device includes a structural cavity 11 for positioning iron frame back shell below the trapezoidal structural cavity 10 inside the quadrilateral structure of the device body 1; the thickness H of the device body 1 is greater than the sum of the thickness of the iron frame back shell and the thickness of the LED frame.

[0006] Furthermore, the inner edge of the top of the trapezoidal cavity 10 is 0.01-1000 mm larger than the outer edge of the corresponding edge of the LED frame; the inner edge of the bottom of the trapezoidal cavity is 0.01-100 mm smaller than the outer edge of the corresponding edge of the LED frame.

[0007] Furthermore, the height F of the rectangular structural cavity 11 that can accommodate the iron frame back shell is greater than or equal to the thickness H3 of the LED frame.

[0008] Furthermore, it is optimal that the inner sides of the top of the trapezoidal cavity 10 are 2 mm larger than the outer sides of the corresponding sides of the LED frame; and it is optimal that the inner sides of the bottom of the trapezoidal cavity are 0.2 mm smaller than the outer sides of the corresponding sides of the LED frame.

[0009] The technological advancement of this technology addresses the shortcomings of manual installation of LED frames into the iron frame back cover, which is characterized by low efficiency and unreliable quality. Attached image description:

[0010] Figure 1 An exploded view of the three-dimensional structure of the existing backlight layer assembly, including the reflective film, LED frame, and iron frame back cover.

[0011] Figure 2 This is a three-dimensional structural diagram of the device body according to one embodiment of the present utility model;

[0012] Figure 3 This is a cross-sectional view of the device body A1-A1 according to one embodiment of the present utility model;

[0013] Figure 4 This is a three-dimensional structural diagram of the device body according to a second embodiment of the present utility model;

[0014] Figure 5 This is a cross-sectional view of the device body along line A-A, which is a second embodiment of this utility model.

[0015] Figure 6 This is a cross-sectional view of the device body along line B-B according to the second embodiment of this utility model;

[0016] Figure 7 This is a schematic diagram of the three-dimensional structure of the pressure plate of this utility model. Specific implementation examples:

[0018] like Figure 1 The diagram shows an exploded three-dimensional structure of a backlight layer assembly consisting of a reflective film, an LED frame, and a metal frame back shell; where 3 is the metal frame back shell, 4 is the reflective film, and 5 is the LED frame. The metal frame back shell 3 is a frame-shaped structure with a bottom surface and a side frame, and at least two corresponding sides 30 and 31 are provided with corresponding locking holes 34. One side of the metal frame back shell 3 is provided with a backlight LED lamp placement area 35. The LED frame 5 is a bottomless frame structure, where the inner surface of the bottom section of each side is provided with a protruding locking edge 56. The bottom surface of the locking edge 56 and the inner surface of each side form a cavity for accommodating the reflective film 4, in which the reflective film 4 is disposed; each side is provided with a locking protrusion 54 corresponding to the locking hole 34 on the side of the metal frame back shell 3.

[0019] like Figure 2 , Figure 3 The diagram shown is a three-dimensional structural schematic of a device according to one embodiment of the present invention. The device includes a quadrilateral body 1 with a trapezoidal cavity 10 inside. The thickness H of the device body 1 is greater than the thickness H5 of the LED frame. The inner sides of the top of the trapezoidal cavity are greater than the outer sides of the corresponding sides of the LED frame, i.e., the side length C is greater than the side length D5, to facilitate the placement of the LED frame 5 into the upper part of the quadrilateral structure of the device body 1, which is the top opening of the trapezoidal cavity 10. The inner sides of the bottom of the trapezoidal cavity are smaller than the outer sides of the corresponding sides of the LED frame, i.e., the side length D is less than the side length D5, to facilitate the LED frame 5 to undergo a shrinkage deformation when pressed into the iron frame back shell 3 by the pressure plate 2 after being placed into the trapezoidal cavity 10 of the quadrilateral structure of the device body 1.

[0020] like Figure 4 , Figure 5 , Figure 6 The diagram shows a three-dimensional structural representation of the device body according to a second embodiment of this utility model. The device includes a quadrilateral body 1 with a trapezoidal cavity 10 in the upper section and a rectangular cavity 11 in the bottom section that can accommodate an iron frame back shell. The thickness H of the device body 1 is greater than the sum of the thickness H3 of the iron frame back shell and the thickness H5 of the LED frame. The inner sides of the top of the trapezoidal cavity are greater than the outer sides of the corresponding sides of the LED frame, i.e., the side length C is greater than the side length D5, to facilitate the placement of the LED frame 5 into the top opening of the trapezoidal cavity 10 in the upper section of the quadrilateral structure of the device body 1. The height F of the rectangular cavity 11 that can accommodate the iron frame back shell is greater than or equal to the thickness H3 of the LED frame, i.e., the thickness H3 of the LED frame plus the thickness of the iron frame back shell. The E side of the rectangular cavity 11 of the iron frame back shell is 0.1 mm greater than the D3 side of the iron frame back shell; the K side of the rectangular cavity 11 of the iron frame back shell is 0.1 mm greater than the G3 side of the iron frame back shell.

[0021] The inner sides of the bottom of the trapezoidal cavity are smaller than the outer sides of the corresponding sides of the LED frame, and the two are dynamically fitted. It is preferable that the D5 side is larger than the D side and the G5 side is larger than the G side by 0.2 mm. The four inner sides of the device body 1 are provided with positioning grooves 12. The number and size of the positioning grooves 12 vary depending on the product being processed. Their function is to ensure that the pressure plate 2 is pressed smoothly into the trapezoidal cavity 10 without causing front-back, left-right displacement.

[0022] like Figure 7 As shown, the outer edge of the pressure plate 2 is the same as the rectangle formed by the inner sides of the bottom of the trapezoidal structure cavity. It is preferable that the D2 side of the pressure plate 2 is 2 mm larger than the D3 side of the iron frame back shell; it is also preferable that the G2 side of the pressure plate 2 is 2 mm larger than the G3 side of the iron frame back shell. The outer edge of the pressure plate 2 is provided with a positioning post 20 that can slide in conjunction with the positioning groove 12 provided on the inner side of the four sides of the device body 1. The top of the pressure plate 2 is provided with an operating handle 22.

[0023] The working process of one embodiment of this device is as follows: First, the reflective film 4 is inserted into or glued into the LED frame 5, into the accommodating cavity formed by the bottom surfaces of the clip edge 56; then, the iron frame back shell 3 is placed on the operating table; next, the LED frame 5 is moved into the trapezoidal structure cavity 10 of the device body 1, and the bottom inner edges of the trapezoidal structure cavity of the device body 1 are aligned with the edges of the iron frame back shell 3. The pressure plate 2 is used to press the LED frame 5 into the iron frame back shell 3 until the clip protrusion 54 of the LED frame 5 is inserted into the corresponding clip hole 34 on the edge of the iron frame back shell 3. Then, the backlight layer assembly can be removed.

[0024] The second embodiment of this device operates as follows: First, the reflective film 4 is inserted into or glued into the LED frame 5, within the accommodating cavity formed by the bottom surfaces of the insert edges 56. Then, the iron frame back shell 3 is placed within the rectangular structural cavity 11 of the device body 1, which accommodates the iron frame back shell. To facilitate the handling and positioning of iron frame back shells of different sizes, the structural cavity 11 may have multiple sides or a single side. The device body 1 is placed on the operating table. Next, the LED frame 5 is moved into the trapezoidal structural cavity 10 of the device body 1, and the pressure plate 2 is used to press the LED frame 5 into the iron frame back shell 3 until the insert protrusions 54 on the LED frame 5 engage with the corresponding insert holes 34 on the side of the iron frame back shell 3. The backlight layer assembly can then be removed.

Claims

1. A quick assembly device for the iron frame back cover and LED frame of a liquid crystal display screen backlight, characterized in that, The device includes a device body (1) and a pressure plate (2); the device body (1) has a quadrilateral, circular, triangular or elliptical plate-like structure around its perimeter, and the main structure inside the device body (1) is a rectangular trapezoidal cavity (10). The thickness H of the device body (1) is greater than the thickness of the LED frame. The inner sides of the top of the trapezoidal cavity (10) are greater than the outer sides of the corresponding sides of the LED frame, and the inner sides of the bottom of the trapezoidal cavity are smaller than the outer sides of the corresponding sides of the LED frame. The four sides of the device body (1) are provided with positioning grooves (12), and the outer edge of the pressure plate (2) is the same as the rectangle formed by the inner sides of the bottom of the trapezoidal cavity. The outer edge of the pressure plate (2) is provided with a positioning post (20) that can slide in cooperation with the positioning grooves (12) provided on the four sides of the device body (1).

2. The quick assembly device for the iron frame back cover and LED frame of the liquid crystal display screen backlight according to claim 1, characterized in that, The device includes a trapezoidal cavity (10) under a quadrilateral structure of the device body (1), and a cavity (11) for positioning iron frame back shell; the thickness H of the device body (1) is greater than the sum of the thickness of the iron frame back shell and the thickness of the LED frame.

3. The quick assembly device for the iron frame back cover and LED frame of the liquid crystal display screen backlight according to claim 1 or 2, characterized in that... The top inner edge of the trapezoidal cavity (10) is 0.01-1000 mm larger than the outer edge of the corresponding edge of the LED frame; the bottom inner edge of the trapezoidal cavity is 0.01-100 mm smaller than the outer edge of the corresponding edge of the LED frame.

4. The quick assembly device for the iron frame back cover and LED frame of the liquid crystal display screen backlight according to claim 2, characterized in that... The height F of the structural cavity (11) of the positioning iron frame back shell is greater than or equal to the thickness H3 of the LED frame.

5. The quick assembly device for the iron frame back cover and LED frame of the liquid crystal display screen backlight according to claim 3, characterized in that... The top inner edge of the trapezoidal cavity (10) is 2 mm larger than the outer edge of the corresponding edge of the LED frame; the bottom inner edge of the trapezoidal cavity is 0.2 mm smaller than the outer edge of the corresponding edge of the LED frame.

Images