Backlight module capable of preventing mistaken use of screws

Abstract

The backlight module comprises a middle frame, a rear frame and a backlight assembly, the backlight assembly is wrapped between the middle frame and the rear frame, a stud hole is formed in the frame face of the rear frame, a connecting stud is installed in the stud hole, an inner threaded hole is formed in the middle of the stud and used for being connected with the screw, and the inner threaded hole is a blind hole. The non-penetrating part of the blind hole faces the backlight assembly. Compared with the prior art, the internal thread hole in the stud installed in the stud hole of the back frame face of the backlight module is changed into the blind hole, so that the tapping depth of the internal thread of the stud is changed, the screw cannot be continuously tapped in when the screw is hit into the non-penetrating part of the internal thread of the stud, an employee can find a problem and stop for further checking, and the work efficiency is improved. Therefore, the problem that the reflector plate and the light guide plate are locked and damaged in the tapping process due to the fact that a wrong long screw is used is solved, and the device does not need to be additionally pasted by personnel.

Description

Technical Field

[0001] The utility model relates to the field of backlight module assembly, in particular to a backlight module capable of preventing wrong screws from being used. Background Art

[0002] Conventional backlight display module with studs on the back (see Figure 1 ), the middle of the stud 211 is usually designed to be a through internal threaded hole 212, and a protective paper 10 is added at the bottom of the hole, which can play a role in dust prevention.

[0003] However, because the protective paper 10, the reflective sheet 34 and the light guide plate 33 are made of relatively soft materials, when the client's production line is locking the screws, the length of the screws selected is too long, and the reflective sheet and the light guide plate will be locked by the screws, resulting in serious damage and white spots. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide a backlight module that prevents the use of screws of the wrong length during assembly, thereby preventing locking damage to the reflector and light guide plate during the tapping process, by modifying the tapping depth of the internal thread of the stud.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A backlight module that prevents the use of incorrect screws includes a middle frame, a rear frame, and a backlight assembly. The backlight assembly is wrapped between the middle frame and the rear frame. A stud hole is provided on the surface of the rear frame. The stud hole is installed with a connecting stud. An internal threaded hole is provided in the middle of the stud for connecting the screw. The internal threaded hole is a blind hole, and the non-penetrating portion of the blind hole faces the backlight assembly.

[0007] Preferably, the stud holes are arranged at the four corners of the rear frame surface.

[0008] Preferably, the thickness of the non-penetrating portion of the internal threaded hole is 0.8 mm.

[0009] Furthermore, the backlight assembly includes a backlight source and an optical film material, a light guide plate, and a reflective sheet distributed layer by layer from the middle frame to the rear frame near the backlight source.

[0010] Furthermore, the optical film material is any one of a reflective film, a diffusion film, and a brightness enhancement film, or a combination thereof.

[0011] Furthermore, an outward expansion portion facing away from the reflective sheet is provided around a portion of the rear frame surface close to the stud hole of the backlight source.

[0012] Preferably, the screws are installed using an automatic torque tool.

[0013] Preferably, the stud hole is welded to the stud.

[0014] Preferably, an elastic washer is used between the stud and the screw to help keep the screw tightened and fastened after tightening.

[0015] Preferably, the rear frame is an iron frame or an iron-rubber integrated frame.

[0016] In the present utility model, by changing the internal threaded hole inside the stud installed in the stud hole on the rear frame surface of the backlight module into a blind hole, thereby modifying the tapping depth of the internal thread of the stud. In this way, during the assembly process, if the client misuses a longer screw, since the stud is made of a harder metal material, when the screw hits the non-penetrating part of the internal thread of the stud, it cannot penetrate further, and the employee can then discover the problem and stop for further verification, thereby preventing damage to the reflective sheet and the light guide plate during the process of using the wrong long screw. At the same time, this utility model does not require additional protective paper to be pasted by personnel, which can improve the production efficiency of the product and save material costs. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0018] Figure 1 Schematic diagram of the backlight module in the prior art;

[0019] Figure 2 Schematic diagram of the backlight module of the present utility model. Detailed Embodiments

[0020] To facilitate the understanding of the present utility model, the following will describe the present utility model more comprehensively with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0021] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be intermediate elements present at the same time. The terms "towards", "away from", "back surface" and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiments.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are for the purpose of describing specific embodiments only and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] Refer to Figure 2 , compared with the prior art, in this embodiment, a backlight module is provided, which prevents the problem of locking damage to the reflective sheet and the light guide plate caused by using the wrong long screw during the assembly process by modifying the tapping depth of the internal thread of the stud. The module includes a middle frame 1, a rear frame 2, and a backlight assembly 3. The backlight assembly 3 is wrapped between the middle frame 1 and the rear frame 2. A stud hole 21 is provided on the surface of the rear frame 2, and a stud 211 is installed in the stud hole 21. An internal thread hole 212 is provided in the middle of the stud 211 for connecting a screw. The internal thread hole 212 is a blind hole, and the non-penetrating part 214 of the blind hole faces the backlight assembly 3.

[0024] In this embodiment, the middle frame 1 and the rear frame 2 are buckled to form a firm space, so that the backlight assembly 3 is stably assembled in the two frames 1 and 2 to form a backlight module. The rear frame uses the stud 211 to assemble and fix the backlight module to the client's casing, that is, the entire backlight module is fixed on the whole machine through the stud 211. The internal thread hole 212 of the stud 211 is set as a blind hole, and the tapping depth of the internal thread of the stud 211 is changed. In this way, during the assembly process, if a longer screw is misused at the client side, because the stud 211 is made of a harder metal material, when the screw hits the non-penetrating part 214 of the stud 211, it cannot continue to penetrate, and the employee can find the problem and stop for further verification, ensuring that while the stud 211 plays a fixing role, it will not cause locking damage to the backlight assembly 3 of the module, resulting in a negative impact on the optical performance of the module. Moreover, the design of the blind hole 212 does not require additional protective paper to be pasted, which can improve the production efficiency of the product and save material costs.

[0025] In this embodiment, the stud holes 21 are arranged at the four corners of the surface of the rear frame 2. In a specific implementation, a stud hole 21 can also be added in the center of the surface of the rear frame 2, and a stud 211 and a screw are installed.

[0026] In this embodiment, the thickness of the non-penetrating part 214 of the stud hole 21 is set to 0.8 mm, ensuring that there is enough thickness and strength to resist the force of locking the screw, and at the same time avoiding too large a reserved thickness from occupying the depth of the internal thread.

[0027] In this embodiment, the backlight assembly 3 includes a backlight source 31 and optical film materials 32, a light guide plate 33, and a reflective sheet 34 that are distributed layer by layer from the middle frame 1 to the rear frame 2 near the backlight source 31.

[0028] In a specific implementation, the optical film 32 can be any one or a combination of a reflective film, a diffusion film, and a brightness enhancement film.

[0029] In this embodiment, an outward expansion portion 22 facing away from the reflective sheet is provided around the stud hole 21 portion of the frame surface of the rear frame 2 close to the backlight 31. On the one hand, it avoids the blind hole penetrating the reflective sheet 34 and the light guide plate 33 due to too much tightening force and causes locking damage. On the other hand, the design of the outward expansion portion 22 can reflect light more effectively, reduce light loss, and help improve the overall brightness and light uniformity of the backlight module.

[0030] In the assembly of this embodiment, the screws are installed using an automatic torque tool to control the force during the installation process and avoid unnecessary damage to the module. The stud hole 21 and the stud 211 are welded together, and an elastic washer is used between the stud 211 and the screw to keep the screw tightened after tightening.

[0031] In this embodiment, the rear frame 2 can be an iron frame or an iron-rubber integrated frame.

[0032] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A backlight module for preventing misusage of screws, comprising a middle frame, a rear frame, and a backlight assembly. The backlight assembly is wrapped between the middle frame and the rear frame. A stud hole is formed on the surface of the rear frame, and a stud is installed and connected in the stud hole. It is characterized in that, An internal threaded hole is formed in the middle of the stud for connecting a screw. The internal threaded hole is a blind hole, and the non-penetrating part of the blind hole faces the backlight assembly.

2. The backlight module for preventing incorrect use of screws according to claim 1, characterized in that The stud holes are arranged at the four corners of the frame surface of the rear frame.

3. The backlight module for preventing misusing screws according to claim 1, characterized in that, The thickness of the non-penetrating part of the internal threaded hole is 0.8 mm.

4. The backlight module for preventing misusing screws according to claim 1, characterized in that The backlight assembly includes a backlight source and optical film materials, a light guide plate, and a reflector that are distributed layer by layer from the middle frame to the rear frame close to the backlight source.

5. The backlight module for preventing the wrong use of screws according to claim 4, wherein The optical film material is any one or a combination of a reflective film, a diffusion film, and a brightness enhancement film.

6. The backlight module for preventing misusing screws according to claim 5, wherein An outward expansion part facing away from the reflector is provided around the stud hole part of the frame surface of the rear frame close to the backlight source.

7. The backlight module for preventing misusing screws according to claim 1, wherein The screw is installed using an automatic torque tool.

8. The backlight module for preventing misusing screws according to claim 1, characterized in that, The stud hole is connected to the stud by welding.

9. The backlight module for preventing incorrect use of screws according to claim 1, characterized in that, An elastic washer is used between the stud and the screw to help keep the screw tightened and fastened after tightening.

10. The backlight module for preventing misusing screws according to claim 1, wherein The rear frame is an iron frame or an iron-plastic integrated frame.

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