CN209879205U - Optical film fixing device - Google Patents

Abstract

The utility model discloses an optical diaphragm fixing device, which comprises a back plate, a middle frame arranged at the inner side of the back plate and used for fixing a liquid crystal display screen, and a U-shaped elastic sheet clamped with the middle frame and used for fixing an optical diaphragm; the middle frame is bonded and connected with the back plate through a connecting agent; the U-shaped elastic sheet penetrates through the middle frame and extends to the inside of the optical diaphragm. The utility model discloses with the fixed optics diaphragm of form of U type shell fragment buckle, simple structure makes things convenient for the on-the-spot assembly, has reduced the required material cost of assembly, has improved assembly efficiency.

Description

Optical film fixing device

Technical Field

The utility model relates to a backlight unit uses technical field, and more specifically says that it relates to an optics diaphragm fixing device.

Background

In the current LED lcd tv, the optical film in the backlight module is usually fixed on the back of the tv horizontally, and then a middle frame structure is fixed on the optical film, and the optical film is pressed by the middle frame structure, so as to assemble and fix the optical film.

However, the fixing method of the optical film uses a back and top structure, which results in high material and assembly cost, and is not easy to assemble, thereby resulting in low production efficiency.

Therefore, the prior art still needs to be improved and developed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an optics diaphragm fixing device aims at solving the technical problem that the fixed assembly of optics diaphragm is complicated and the material is with high costs among the prior art.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides an optical diaphragm fixing device, which comprises a back plate, a middle frame arranged at the inner side of the back plate and used for fixing a liquid crystal display screen, and a U-shaped elastic sheet clamped with the middle frame and used for fixing an optical diaphragm; the middle frame is bonded and connected with the back plate through a connecting agent; the U-shaped elastic sheet penetrates through the middle frame and the optical diaphragm.

Further, the center is L type structure, and the surface of center is provided with and is used for accepting the ladder face of backplate, the width adaptation of ladder face the width of backplate.

Furthermore, the surface of the middle frame is also provided with a waist-shaped hole for mounting the U-shaped elastic sheet.

Furthermore, the waist-shaped hole penetrates through the surface of the middle frame, the width of the waist-shaped hole is matched with the width of the middle part of the U-shaped elastic sheet, and the length of the waist-shaped hole is matched with the length of the U-shaped elastic sheet.

Furthermore, buckles used for being connected with the middle frame in a clamped mode are arranged on two side faces of the U-shaped elastic sheet, the buckles and the U-shaped elastic sheet are integrally formed, and the buckles are located at edge positions of the two side faces of the U-shaped elastic sheet.

Furthermore, a clamping block for limiting is arranged at the top of the U-shaped elastic sheet, the clamping block and the U-shaped elastic sheet are integrally formed, and the clamping block extends towards two sides of the U-shaped elastic sheet.

Further, the bottom of center is provided with the semi-circular hole that is used for with the buckle joint, the position of semi-circular hole corresponds the position of buckle, just the diameter size of the diameter size adaptation buckle of semi-circular hole.

Furthermore, the surface of the middle frame is also provided with a square groove for installing the fixture block, and the depth of the square groove is matched with the height of the fixture block.

Furthermore, a U-shaped groove used for detaching the U-shaped elastic sheet is formed in the surface of the clamping block, the U-shaped groove is located in the edge position of the surface of the clamping block, and the U-shaped groove penetrates through the surface of the clamping block.

Furthermore, the U-shaped elastic sheet is a metal U-shaped elastic sheet.

To sum up, the utility model discloses the technical scheme who adopts has following beneficial effect:

the utility model arranges the waist-shaped hole on the surface of the middle frame and the semi-circular hole on the bottom of the middle frame, so that the U-shaped elastic piece can be clamped with the middle frame; the U-shaped elastic sheet can penetrate through the optical diaphragm while being clamped with the middle frame, and the position of the optical diaphragm is fixed; moreover, the clamping block is arranged at the top of the U-shaped elastic sheet, and the square groove is arranged on the surface of the middle frame, so that the position of the U-shaped elastic sheet can be fixed, and the optical diaphragm is prevented from shifting along with the U-shaped elastic sheet; the utility model discloses with the fixed optics diaphragm of form of U type shell fragment buckle, simple structure makes things convenient for the on-the-spot assembly, has reduced the required material cost of assembly, has improved assembly efficiency.

Drawings

Fig. 1 is a schematic structural diagram of an optical film fixing device according to the present invention.

Fig. 2 is a schematic structural view of the U-shaped elastic piece of the present invention.

Fig. 3 is a schematic structural diagram of the middle frame of the present invention.

In the figure: 100. a back plate; 200. a middle frame; 300. a U-shaped elastic sheet; 400. an optical film; 210. a step surface; 220. a kidney-shaped hole; 230. a square groove; 310. buckling; 320. a clamping block; 330. a U-shaped groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Example (b):

as shown in fig. 1, the present embodiment provides an optical film fixing device, which includes a back plate 100, a middle frame 200, and a U-shaped elastic sheet 300; the back plate 100 is made of metal material or plastic material and is used for supporting the liquid crystal television; the middle frame 200 is a plastic middle frame and is used for fixing the liquid crystal display screen; the U-shaped elastic piece 300 is a metal elastic piece for fixing the optical film 400.

The middle frame 200 is arranged on the inner side of the backboard 100 and is adhered to the backboard 100 through a connecting agent; when the optical membrane is fixed by the U-shaped elastic sheet 300, the top of the U-shaped elastic sheet 300 is clamped with the middle frame 200, and the middle of the U-shaped elastic sheet 300 penetrates through the optical membrane 400 to fix the optical membrane 400.

In this embodiment, the middle frame 200 and the optical film 400 are provided with waist-shaped holes 220 (as shown in fig. 3) with corresponding sizes and corresponding positions; when the optical film 400 is assembled, the optical film 400 can be fixed only by passing the U-shaped elastic sheet 300 through the middle frame 200 and then through the optical film 400; after the lcd tv is erected (the state shown in fig. 1 is horizontal), the optical film 400 may be suspended on the U-shaped elastic sheet 300, so as to achieve the purpose of assembling and fixing the optical film 400.

Further, as shown in fig. 3, the middle frame 200 is an L-shaped structure, a stepped surface 210 is disposed on a surface of the middle frame 200, and the stepped surface 210 can be used for receiving the backboard 100; when the middle frame 200 is adhered to the backboard 100 (as shown in fig. 1), the bent portion of the top of the backboard 100 just contacts with the step surface 210, so that the middle frame 200 can be clamped inside the backboard 100, and meanwhile, the bent portion of the top of the backboard 100 can provide a certain pressure for the middle frame 200, so that the middle frame 200 can press the liquid crystal display screen; preferably, the width of the stepped surface 210 is adapted to the width of the back plate 100.

Further, as shown in fig. 3, a waist-shaped hole 220 is further disposed on the surface of the middle frame 200, and the waist-shaped hole 220 may be used to mount the U-shaped elastic piece 300 and fix the U-shaped elastic piece 300; when the optical film 400 is assembled, the U-shaped elastic sheet 300 passes through the waist-shaped hole 220; preferably, the waist-shaped hole 220 is disposed in the middle of the middle frame 200, the width of the waist-shaped hole 220 is adapted to the width of the U-shaped elastic piece 300, and the length of the waist-shaped hole 220 is adapted to the length of the U-shaped elastic piece 300.

Further, as shown in fig. 2, two side surfaces of the U-shaped elastic piece 300 are both provided with a buckle 310, and the buckle 310 is used for being clamped with the middle frame 200; after the U-shaped elastic sheet 300 passes through the middle frame 200, the buckle 310 is clamped in a semicircular hole (not labeled) at the bottom of the middle frame 200, so as to realize clamping with the middle frame 200; preferably, the buckle 310 is integrally formed with the U-shaped resilient piece 300, and the buckle 310 is located at the edge of two sides of the U-shaped resilient piece 300.

Further, as shown in fig. 2, a fixture block 320 is disposed at the top of the U-shaped resilient piece 300, and the fixture block 320 may be used for limiting the U-shaped resilient piece 300; since the U-shaped elastic piece 300 is clamped with the semicircular hole at the bottom of the middle frame 200 through the buckle 310, when the U-shaped elastic piece 300 is pressed, the U-shaped elastic piece 300 can shift to one side of the optical membrane 400; therefore, the arrangement of the fixture block 320 can prevent the U-shaped resilient piece 300 from deviating, and limit the U-shaped resilient piece 300.

The fixture block 320 is arranged at the top of the U-shaped elastic sheet 300, and has the function of facilitating the subsequent disassembly of the U-shaped elastic sheet 300; preferably, the latch 320 is integrally formed with the U-shaped resilient piece 300, and the latch 320 extends towards two sides of the U-shaped resilient piece 300.

Correspondingly, in order to realize the joint between the U-shaped spring 300 and the middle frame 200, a semicircular hole (not labeled) is formed in the bottom of the middle frame 200, the position of the semicircular hole corresponds to the position of the buckle 310, and the diameter of the semicircular hole is matched with the diameter of the buckle 310.

Correspondingly, as shown in fig. 3, in order to install the latch 320, the latch 320 is hidden on the surface of the middle frame 200; a square groove 230 is also arranged on the surface of the middle frame 200; preferably, the depth of the square groove 230 is adapted to the height of the latch 320; the U-shaped elastic piece 300 can be further limited by the square groove 230, so that the U-shaped elastic piece 300 can be prevented from deviating in the vertical direction after the lcd tv is erected.

Further, as shown in fig. 2, in order to facilitate the subsequent detachment of the U-shaped resilient piece 300, a U-shaped groove 330 is formed on the surface of the fixture block 320; when the U-shaped elastic sheet 300 needs to be disassembled, the U-shaped elastic sheet 300 can be contracted by pressing the U-shaped groove 330, so that the U-shaped elastic sheet is disassembled; preferably, the U-shaped groove 330 is located at an edge of the cartridge 320, and the U-shaped groove 330 penetrates through a surface of the cartridge 320.

In this embodiment, the middle frame 200 is first used to cooperate with the back plate 100 to fix the optical film 400 in the horizontal direction (X direction) and the longitudinal direction (Y direction), and then the U-shaped elastic piece 300 is used to cooperate with the middle frame 200 to fix the optical film 400 in the vertical direction (Z direction), so as to complete the assembly and fixation of the optical film 400.

In summary, the utility model arranges the waist-shaped hole on the surface of the middle frame and the semi-circular hole on the bottom of the middle frame, so that the U-shaped elastic piece can be clamped with the middle frame; the U-shaped elastic sheet can penetrate through the optical diaphragm while being clamped with the middle frame, and the position of the optical diaphragm is fixed; moreover, the clamping block is arranged at the top of the U-shaped elastic sheet, and the square groove is arranged on the surface of the middle frame, so that the position of the U-shaped elastic sheet can be fixed, and the optical diaphragm is prevented from shifting along with the U-shaped elastic sheet; the utility model discloses with the fixed optics diaphragm of form of U type shell fragment buckle, simple structure makes things convenient for the on-the-spot assembly, has reduced the required material cost of assembly, has improved assembly efficiency.

It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims (10)

1. An optical film fixing device, characterized in that: the liquid crystal display panel comprises a back plate, a middle frame arranged on the inner side of the back plate and used for fixing a liquid crystal display screen, and a U-shaped elastic sheet clamped with the middle frame and used for fixing an optical diaphragm; the middle frame is bonded and connected with the back plate through a connecting agent; the U-shaped elastic sheet penetrates through the middle frame and the optical diaphragm.

2. The optical film fixing device according to claim 1, wherein: the center is L type structure, just the surface of center is provided with and is used for accepting the ladder face of backplate, the width adaptation of ladder face the width of backplate.

3. The optical film fixing device according to claim 1, wherein: the surface of the middle frame is also provided with a waist-shaped hole for installing the U-shaped elastic sheet.

4. The optical film fixing device according to claim 3, wherein: the waist-shaped hole penetrates through the surface of the middle frame, the width of the waist-shaped hole is matched with the width of the middle part of the U-shaped elastic sheet, and the length of the waist-shaped hole is matched with the length of the U-shaped elastic sheet.

5. The optical film fixing device according to claim 1, wherein: the U-shaped elastic piece is characterized in that buckles used for being connected with the middle frame in a clamped mode are arranged on two side faces of the U-shaped elastic piece, the buckles are integrally formed with the U-shaped elastic piece, and the buckles are located at edge positions of the two side faces of the U-shaped elastic piece.

6. The optical film fixing device according to claim 1, wherein: the top of U type shell fragment is provided with and is used for spacing fixture block, the fixture block with U type shell fragment integrated into one piece, just the fixture block extends to the both sides of U type shell fragment.

7. The optical film fixing device according to claim 5, wherein: the bottom of center is provided with the semicircular hole that is used for with the buckle joint, the position of semicircular hole corresponds the position of buckle, just the diameter size of the diameter size adaptation buckle of semicircular hole.

8. The optical film fixing device according to claim 1, wherein: the surface of the middle frame is also provided with a square groove for mounting the fixture block, and the depth of the square groove is matched with the height of the fixture block.

9. The optical film fixing device according to claim 6, wherein: the surface of the fixture block is provided with a U-shaped groove used for detaching the U-shaped elastic sheet, the U-shaped groove is located at the edge position of the surface of the fixture block, and the U-shaped groove penetrates through the surface of the fixture block.

10. The optical film fixing device according to claim 1, wherein: the U-shaped elastic sheet is a metal U-shaped elastic sheet.