Film drawing structure for dust-free mobile phone explosion-proof film pasting box
By designing a film-pulling structure, the problems of cumbersome operation and dust ingress in the dust-free mobile phone explosion-proof film application box were solved, enabling simultaneous peeling and rolling with one hand, thus improving the efficiency and quality of film application.
Patent Information
- Application Number
- CN202520583846.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-31
AI Technical Summary
Existing dust-free explosion-proof screen protector application kits are cumbersome to operate, requiring both hands, and the separation of the protective layer peeling and rolling action can easily allow dust to enter, affecting the quality of the application.
A film-stretching structure is designed to simultaneously peel off the release liner and roll the assembly liner through the cooperation of hook-shaped positioning blocks and pull straps, simplifying the operation process and preventing dust from entering.
It enables convenient one-handed operation, simultaneously peeling and rolling the protective film, improving the efficiency and quality of film application, and ensuring a dust-free environment.
Smart Images

Figure CN223891295U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic device accessories technology, specifically to a film-pulling structure for a dust-free mobile phone explosion-proof film application box, which is particularly suitable for the rapid peeling and synchronous pressing of the protective film in an improved dust-free film application box. Background Technology
[0002] With the widespread use of smartphones, screen protectors, as an important accessory for protecting phone screens, are receiving increasing attention from users regarding the ease of application and the effectiveness of the film. Existing dust-free screen protector boxes have made significant efforts to achieve dust-free application. For example, patent CN221970231U describes a packaging box with a dust-free screen protector application function, which achieves this function through the cooperation of an outer box, a movable inner box, and an assembly film.
[0003] However, existing technologies still have some obvious drawbacks. On the one hand, the application process is rather cumbersome, requiring the user to hold the box with one hand while peeling off the protective layer with the other, followed by separate rolling. The entire process relies on both hands, which is extremely inconvenient for some users, especially in one-handed scenarios. On the other hand, in traditional designs, the peeling and rolling actions are separate, which makes it easy for dust to get in during the process, affecting the dust-free application and potentially causing the screen protector to not adhere tightly to the phone screen, thus reducing the quality and user experience.
[0004] To address the problems existing in the prior art, this utility model, based on in-depth research and improvement of patent CN221970231U regarding a packaging box with a dust-free mobile phone explosion-proof film application function, proposes a film-pulling structure for a dust-free mobile phone explosion-proof film application box. This structure, through its integrated film-pulling design, allows users to simultaneously peel off the release liner and roll the application film simply by horizontally pulling the film box, significantly improving operational convenience. It also effectively avoids problems such as dust ingress and loose adhesion, greatly enhancing the film application effect. Utility Model Content
[0005] (I) Technical Issues
[0006] The purpose of this invention is to provide a film-pulling structure for a dust-free mobile phone explosion-proof film application box, solving the problem of cumbersome operation and the need for two-handed operation in the prior art.
[0007] (II) Technical Content
[0008] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a film-pulling structure for a dust-free mobile phone explosion-proof film application box, including an assembly film, a release protective film at the bottom of the assembly film, a pull strap fixedly provided on the bottom surface of the release protective film, and a hook-shaped positioning block for snapping and fixing the assembly film fixedly provided at the middle of one end of the application box; one end of the pull strap is fixed to the bottom of the release protective film of the assembly film, and the other end is provided with a positioning hole adapted to the hook-shaped positioning block; when the application box is pulled horizontally, the pull strap, through the cooperation of the hook-shaped positioning block and the positioning hole, drives the release protective film to peel off from the assembly film, while the rollers on the top of the application box simultaneously roll the assembly film.
[0009] Furthermore, the pull strip is made of a flexible material, and its width is smaller than the width of the release liner.
[0010] Furthermore, the hook-shaped positioning block is a protruding buckle, the shape of which is adapted to the diameter of the positioning hole.
[0011] Furthermore, the pull strap and the release liner are bonded together by a peelable adhesive layer.
[0012] (III) Technical Effects
[0013] The advantages of this utility model compared with the prior art are as follows:
[0014] 1. Easy to operate: Abandoning the cumbersome process of traditional two-handed operation, users only need to pull the inner film box horizontally to simultaneously peel off the release protective film and roll the assembly film. Whether operating with one hand or with both hands, it is easier and smoother, greatly improving operating efficiency and reducing operating time.
[0015] 2. Prevent dust from entering: Since the protective layer peeling and rolling actions are carried out simultaneously, the time the assembly film is exposed to the air is reduced, which lowers the risk of dust falling between the film and the screen, better ensuring the environmental requirements for dust-free film application and improving the quality of film application. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of a film-pulling structure for a dust-free mobile phone explosion-proof film application box according to this utility model. Figure 1 .
[0017] Figure 2 This is a three-dimensional structural diagram of a film-pulling structure for a dust-free mobile phone explosion-proof film application box according to this utility model. Figure 2 .
[0018] Figure 3 This is a front view schematic diagram of a film-pulling structure for a dust-free explosion-proof mobile phone film application box according to the present invention.
[0019] Figure 4This is a top view schematic diagram of the film-pulling structure of a dust-free mobile phone explosion-proof film application box according to the present invention.
[0020] Figure 5 This is a schematic diagram of the hook-shaped positioning block of the film-pulling structure for a dust-free mobile phone explosion-proof film application box according to the present invention.
[0021] Figure 6 This is a schematic diagram of the usage state of a film-pulling structure for a dust-free mobile phone explosion-proof film application box according to this utility model.
[0022] Figure 7 This is a schematic diagram of the usage state of a film-pulling structure for a dust-free mobile phone explosion-proof film application box according to this utility model.
[0023] As shown in the figure: 1. Pull strap; 2. Positioning hole; 3. Hook-shaped positioning block; 6. Assembly film. Detailed Implementation
[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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 structure and operation. Therefore, they should not be construed as limitations on this utility model.
[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "installed," "connected," "linked," etc., 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 according to the specific circumstances.
[0026] The present invention will now be described in further detail with reference to the accompanying drawings.
[0027] Combined with appendix Figure 1 To be continued Figure 7A film-pulling structure for a dust-free mobile phone explosion-proof film applicator includes an assembly film 6, a release protective film at the bottom of the assembly film 6, a pull strap 1 fixedly attached to the bottom surface of the release protective film, and a hook-shaped positioning block 3 for engaging and fixing the assembly film 6 at the middle of one end of the applicator box. One end of the pull strap 1 is fixed to the bottom of the release protective film of the assembly film 6, and the other end has a positioning hole 2 that matches the hook-shaped positioning block 3. When the applicator box is pulled horizontally, the pull strap 1, through the cooperation of the hook-shaped positioning block 3 and the positioning hole 2, drives the release protective film to peel off from the assembly film 6, while the rollers on the top of the applicator box simultaneously roll the assembly film 6.
[0028] The pull strap 1 is made of flexible material and its width is smaller than that of the release liner.
[0029] The hook-shaped positioning block 3 is a protruding buckle, and its shape is adapted to the diameter of the positioning hole 2.
[0030] The pull strap 1 is bonded to the release protective film by a peelable adhesive layer.
[0031] This utility model discloses a film-pulling structure for a dust-free mobile phone explosion-proof film application box, which is an improvement on the packaging box with dust-free mobile phone explosion-proof film application function in patent CN221970231U. The main improvements are in the structure of the hook-shaped positioning block 3 and the assembly film 6. The placement of the outer box, inner box and other structures are all changed. When understanding this technical solution, the above-mentioned authorized patent should be used as a basis.
[0032] The working principle of this utility model is as follows: Figure 6 When preparing to apply the film, the assembly film 6 is snapped and fixed to the inner box (a hook-shaped positioning block 3 is fixed to the center of the left side of the inner box, and a positioning block is fixed to the right side). The pull strap 1 extends from the slot at the bottom of the inner box of the film application box. After the inner box of the film application box is inserted into the outer box, the pull strap 1 is pulled out from the top of the outer box, passes around the outer box, and is installed on the hook-shaped positioning block 3 through the positioning hole 2. At this time, the other end of the pull strap 1 is fixed to the release protective film at the bottom of the assembly film, and the pull strap and the release protective film are firmly bonded by the peelable adhesive layer.
[0033] During the screen protector application process, the user only needs to press down on the outer box with one hand for stability, while pulling the inner box horizontally with the other. During this pulling motion, the pull strap 1 is moved by the tight engagement between the hook-shaped positioning block 3 and the positioning hole 2. Because the pull strap 1 is connected to the release liner, the release liner is gradually peeled off from the assembly film 6. Simultaneously, the rollers mounted on the top of the outer box roll over the assembly film 6, which has just had its release liner peeled off, as the screen protector box moves. In this way, the peeling of the release liner and the rolling application of the assembly film 6 onto the phone screen are completed simultaneously during the horizontal pulling of the inner box, achieving a one-stop operation. This unique pull strap structure design creates a dust-free, sealed application space, greatly simplifying the application process and improving efficiency and quality.
[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A film-stretching structure for a dust-free mobile phone explosion-proof film applicator, comprising an assembly film (6), wherein a release protective film is provided at the bottom of the assembly film (6), characterized in that: The bottom surface of the release protective film is fixedly provided with a pull strap (1), and the middle of one end of the film box is fixedly provided with a hook-shaped positioning block (3) for snapping and fixing the assembly film (6); One end of the pull strap (1) is fixed to the bottom of the release protective film of the assembly film (6), and the other end is provided with a positioning hole (2) that is compatible with the hook-shaped positioning block (3); When the film box is pulled horizontally, the pull strap (1) engages with the positioning hole (2) through the hook-shaped positioning block (3) to peel the release protective film off the assembly film (6), while the rollers on the top of the film box simultaneously roll the assembly film (6).
2. The film-stretching structure for a dust-free mobile phone explosion-proof film application box according to claim 1, characterized in that: The pull strip (1) is made of flexible material and its width is smaller than that of the release liner.
3. The film-stretching structure for a dust-free mobile phone explosion-proof film application box according to claim 1, characterized in that: The hook-shaped positioning block (3) is a protruding buckle, and its shape is adapted to the diameter of the positioning hole (2).
4. The film-stretching structure for a dust-free mobile phone explosion-proof film application box according to claim 1, characterized in that: The pull strip (1) is bonded to the release liner through a peelable adhesive layer.