A quick insertion type film pasting device and a protective film suitable for the film pasting device

Abstract

The utility model discloses a kind of quick plug-in type film applicators, including substrate, the substrate is equipped with limit frame, limit frame and substrate cooperation form a housing chamber, the rear frame is equipped with the off-type groove for pulling condition extension, the inner bottom surface of housing chamber is equipped with the housing groove for accommodating protective film, the inner bottom surface front end of housing groove is equipped with through groove, the utility model quick plug-in type film applicator is realized the stable installation of the film equipment to be pasted by the housing chamber formed by substrate and limit frame, cooperate through groove to make protective film can be obliquely inserted and realize accurate limit by the aid of housing groove, while off-type film is separated when pulling condition is pulled and completed, main body protective layer can be accurately pasted on screen once, effectively avoid the problem, such as tedious operation, paste face exposure time long easy to stick dust etc.

Description

Technical Field

[0001] This utility model relates to the field of screen protector technology, specifically a quick-insertion screen protector and a protective film suitable for the screen protector. Background Technology As described in the published patent CN223187754U, with the advent of the internet age, electronic devices have become increasingly indispensable tools in our lives. However, the screens of electronic devices are sometimes too fragile and are often accidentally scratched or even broken, affecting the display effect and aesthetics of the electronic devices. Replacing the screen requires a lot of money and time. Therefore, people usually apply a protective film to the screen of electronic devices to protect the screen. Existing screen protector application devices first peel off the inner release film of the protective film, then position the protective film, and finally attach the protective film to the screen of the mobile device. Because a positioning operation is required after removing the inner release film, and then applying the film immediately after positioning, the film application process is discontinuous. Furthermore, the positioning process takes time, causing the adhesive surface of the protective film to be exposed to air for an extended period, making it prone to dust accumulation and resulting in poor adhesion. In addition, existing film application aids and films do not have a screen cleaning function, requiring additional dust removal tools such as paper towels to clean the screen before the film application can proceed. This discontinuous application process easily introduces excessive external impurities.

[0002] As described in the published patent CN218199028U, mobile phones have become one of the most important communication tools for people. However, during use, mobile phone screens are easily scratched, affecting the display effect and aesthetics. Therefore, people usually apply a translucent film to the screen to protect it from scratches. This includes hard screen protectors.

[0003] However, when applying rigid screen protectors, precise alignment between the protector and the phone screen is crucial before application. This prevents misalignment after the protector is placed on the screen, which would compromise the application result. Furthermore, the screen often accumulates dust due to electrostatic attraction, necessitating cleaning for a better application. Existing screen protectors with cleaning functions typically include a dust-removing layer, the protector itself, and a positioning layer with positioning holes at both ends. Current screen protector applicators are overly cumbersome, and their positioning and cleaning effects are not ideal. Therefore, improvements are needed to address these shortcomings of existing screen protector application tools.

[0004] like Figure 1 As shown, in the prior art, the protective film 112 includes a main protective layer 130, an upper release layer 129 attached to the upper side of the main protective layer 130, and a lower release layer 126 attached to the lower side of the main protective layer 130. The lower release layer 126 is provided with a pull condition 109 on its lower side, and the front end of the pull condition 109 is connected to the front end of the lower release layer 126.

[0005] In summary, the existing film applicator requires additional positioning of the protective film 112 with the positioning post on the applicator before applying the film to the film-applying device 116, which is too cumbersome. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A quick-insertion film applicator includes a substrate, on which a limiting frame is provided. The limiting frame and the substrate cooperate to form an accommodating cavity. The limiting frame includes a left side frame and a right side frame symmetrically arranged on the left and right sides of the substrate, and a front side frame and a rear side frame symmetrically arranged on the front and rear sides of the substrate. A release groove is provided on the rear frame to allow for the extension of the molded part. The inner bottom surface of the accommodating chamber has an accommodating groove for accommodating the protective film, and the front end of the inner bottom surface of the accommodating groove has a through groove.

[0008] As a further embodiment of this utility model: the rear end of the substrate is provided with a first pull groove that communicates with the receiving groove.

[0009] As a further embodiment of this utility model: a stop block is provided on the substrate in the release groove, the stop block extends out of the substrate plane, and a second pull groove is provided on the stop block that communicates with the first pull groove, the second pull groove being used to accommodate the pull condition.

[0010] As a further embodiment of this utility model: the inner sides of the left and right frames are provided with a first protrusion that abuts against the device to be applied with film, and the inner side of the front frame is provided with a second protrusion that abuts against the device to be applied with film, and the first and second protrusions extend out of the substrate plane.

[0011] As a further embodiment of this utility model, the rear side wall of the through groove is provided with a chamfered portion.

[0012] As a further embodiment of this utility model: the inner side of the front frame is provided with a first snap-fit ​​block that engages with the front end of the device to be applied with film, and the inner side of the rear frame is provided with a second snap-fit ​​block that engages with the rear end of the device to be applied with film.

[0013] As a further embodiment of this utility model: a positioning groove is provided on the back side of the substrate opposite to the front frame, and a limiting post is installed in the positioning groove.

[0014] As a further embodiment of this utility model, an observation window is provided on the inner bottom surface of the receiving groove.

[0015] As a further embodiment of this utility model: the side walls of the front, rear, left and right frames are fixedly provided with limiting protrusions that abut against and cooperate with the side walls of the device to be applied with film.

[0016] A protective film includes a main protective layer, an upper release layer adhered to the upper side of the main protective layer, and a lower release layer adhered to the lower side of the main protective layer. The lower release layer has a pull condition on its lower side. The protective film is suitable for the above-mentioned applicator. The front end of the lower release layer has a first extension. The front end of the pull condition is connected to the first extension and extends out of the front end of the first extension.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model's quick-insertion film applicator achieves stable installation of the device to be applied through a receiving chamber formed by the substrate and the limiting frame. With the help of the through groove, the protective film can be inserted at an angle and accurately limited with the help of the receiving groove. When the pull condition is completed and the release film is detached, the protective layer of the main body can be accurately applied to the screen in one go. It effectively avoids the problems of cumbersome operation and long exposure time of the adhesive surface due to step positioning and film tearing in the traditional film application process, which are easy to get dusty. It realizes a smooth, efficient and high success rate of film application. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the structure of a protective film in the prior art; Figure 2 This is a three-dimensional structural view of the present invention; Figure 3 This is another three-dimensional view of the structure of this utility model; Figure 4 This is a schematic diagram of the film application process of this utility model; Figure 5 This is a schematic diagram of another film application process according to this utility model; Figure 6 This is a schematic diagram of another film application process according to this utility model; Figure 7 This is another three-dimensional view of the structure of this utility model; Figure 8 This is another three-dimensional structural view of the present utility model; Figure 9 This is a top view of the present invention; Figure 10 yes Figure 9 A cross-sectional view along the AA direction; Figure 11 This is a schematic diagram of the structure of the protective film in this utility model; Figure 12 This is a schematic diagram of the process of peeling the release film under tensile conditions in this utility model; The reference numerals and names in the figure are as follows: Substrate-101, limiting frame-102, accommodating chamber-103, left frame-104, right frame-105, front frame-106, rear frame-107, release groove-108, pulling condition-109, accommodating groove-110, through groove-111, protective film-112, first pull strip groove-113, stop block-114, second pull strip groove-115, film-to-be-applied device-116, first protrusion-117, second protrusion-118, chamfered portion-119, first snap-fit ​​block-120, second snap-fit ​​block-121, positioning groove-122, limiting post-123, observation window-124, limiting protrusion-125, lower release layer-126, first extension portion-127, upper release layer-129, body protective layer-130. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-12 A quick-insertion film applicator includes a substrate 101. A limiting frame 102 is provided on the substrate 101. The limiting frame 102 cooperates with the substrate 101 to form an accommodating chamber 103. The limiting frame 102 includes a left frame 104 and a right frame 105 symmetrically arranged on the left and right sides of the substrate 101, and a front frame 106 and a rear frame 107 symmetrically arranged on the front and rear sides of the substrate 101. A release groove 108 is provided on the rear frame 107 for extending the pull condition 109; The inner bottom surface of the accommodating chamber 103 is provided with an accommodating groove 110 for accommodating the protective film 112, and the front end of the inner bottom surface of the accommodating groove 110 is provided with a through groove 111. like Figure 2 , 3 As shown in Figure 4, during the film application process, the screen of the device 116 to be applied faces the receiving chamber 103. The device 116 to be applied is stably snapped into place in the receiving chamber 103. The protective film 112 is inserted obliquely from the through groove 111 on the back of the substrate 101. During the process of inserting the protective film 112 into the through groove 111, the side of the protective film 112 with the pull condition 109 (lower release layer 126) is close to the screen of the device 116 to be applied. Due to the presence of the receiving groove 110, the main protective layer 130 is stopped and limited. Then, the pull condition 109 is pulled to peel off the lower release layer 126, and then the main protective layer 130 is attached to the screen of the device 116 to be applied. It should be noted that after the screen protector 116 is inserted into the receiving chamber 103, the screen of the screen protector 116 will not fit perfectly with the inner bottom surface of the receiving chamber 103 (due to limitations in the manufacturing process or the tolerance of the screen protector itself), but will have a certain gap. At the same time, the pull condition 109 is a sheet with a relatively small thickness, so the pull condition 109 can easily pass through the release groove 108. The advantages of this utility model quick-insertion film applicator are mainly reflected in its innovative operation process of "positioning the device first, then inserting and applying the film simultaneously". No additional positioning operation is required for the protective film 112. The film application operation can be achieved simply by inserting the protective film 112. The receiving chamber 103 formed by the substrate 101 and the limiting frame 102 can quickly and stably fix the device 116 to be applied in the correct position, fundamentally eliminating the displacement of the device itself and laying the foundation for subsequent precise application of the film. Subsequently, the protective film 112 is inserted obliquely through the through groove 111 on the back of the substrate 101. This insertion action itself, under the guidance and limitation of the receiving groove 110, completes the precise positioning of the protective film 112 in the horizontal direction (X / Y axis) in one go, without the need for additional positioning pins or complex adjustments, greatly simplifying the operation steps. More importantly, the entire screen protector application process is seamless: as the protective film 112 is inserted into place, the pull condition 109 extends from the release groove 108, and the surface of the protective layer 130 to be applied (the surface that adheres to the lower release layer 126) is pressed tightly against the screen; the user then directly pulls the pull condition 109 extending from the release groove 108, which allows the lower release film to be peeled off evenly and smoothly in the vertical direction (Z-axis), so that the protective layer 130 of the protective film 112 is attached to the screen of the device 116 to be applied; this continuous "insert and pull" action integrates the multiple discontinuous steps of the traditional "first peel the film - then position - then apply the film" into a continuous and smooth process, which significantly improves the efficiency and success rate of screen protector application. It not only solves the core pain point of cumbersome operation, but also ensures that the surface to be applied is almost not exposed to the air because it is pressed tightly against the screen, effectively avoiding dust contamination. By minimizing the exposure time of the surface to be applied, a high-quality effect of dust-free and bubble-free screen protector application is ensured. This utility model's quick-insertion film applicator achieves stable installation of the device 116 to be applied through the accommodating chamber 103 formed by the substrate 101 and the limiting frame 102. With the help of the through groove 111, the protective film 112 can be inserted at an angle and accurately positioned with the help of the accommodating groove 110. When the pull condition 109 is pulled to complete the release film detachment, the main protective layer 130 can be accurately applied to the screen in one go. This effectively avoids the problems of cumbersome operation and long exposure time of the adhesive surface due to step positioning and film tearing in the traditional film application process, which are prone to dust accumulation. It realizes a continuous, efficient and high success rate of film application.

[0021] In this embodiment of the present invention, the rear end of the substrate 101 is provided with a first pull groove 113 that communicates with the receiving groove 110; like Figure 7 As shown, the first pull groove 113, located at the rear end of the substrate 101 and connected to the receiving groove 110, provides crucial movement space and path guidance for the extension of the pull condition 109 and subsequent operations. This structure ensures that after the protective film 112 is inserted, the pull condition 109 can smoothly extend from the release groove 108 and naturally be placed in the first pull groove 113. This effectively avoids the pull condition 109 being squeezed, folded, or stuck to the edge of the substrate 101 during the process of pulling the pull condition 109 to peel off the lower release film. It ensures that the pulling force can act directly and smoothly on the lower release film, making the peeling process smoother, less labor-intensive, and more controllable, further improving the continuity of the entire film application operation and the user experience.

[0022] In this embodiment of the present invention, a stop block 114 is provided on the substrate 101 in the release groove 108. The stop block 114 extends out of the plane of the substrate 101. A second pull groove 115 communicating with the first pull groove 113 is provided on the stop block 114. The second pull groove 115 is used to accommodate the pull condition 109. The stop block 114, located within the release groove 108, forms an additional limiting barrier for the inserted protective layer 130 through its physical protrusion structure. This effectively prevents the protective layer 130 from over-displacement due to inertia or excessive operating force during insertion, ensuring the accuracy and stability of the final position of the protective layer 130. Simultaneously, the dedicated second pull groove 115 on the stop block 114 provides a dedicated space for the pull condition 109, allowing it to remain flat and uncompressed within the first pull groove 113. This prevents resistance caused by bending or jamming of the pull condition 109 during subsequent pulling, ensuring smooth and efficient peeling and further enhancing the reliability and success rate of the film application process.

[0023] In this embodiment of the utility model, the inner sides of the left frame 104 and the right frame 105 are provided with a first protrusion 117 that abuts and cooperates with the film-applying device 116, and the inner side of the front frame 106 is provided with a second protrusion 118 that abuts and cooperates with the film-applying device 116. The first protrusion 117 and the second protrusion 118 extend out of the plane of the substrate 101. The first protrusion 117 located inside the left frame 104 and the right frame 105, and the second protrusion 118 located inside the front frame 106, have the advantage of forming a stable support system through these three precision protrusions protruding from the plane of the substrate 101. This system can accurately abut against and suspend the device 116 to be applied within the accommodating chamber 103, thereby creating a crucial and uniform peeling gap in the Z-axis direction between the screen of the device 116 to be applied and the lower release film of the protective film 112. This reserved space ensures that the lower release film can obtain sufficient and necessary peeling stroke when the user pulls the pull condition 109, allowing it to separate smoothly and with low resistance from the protective body layer. This completely avoids problems such as peeling difficulties, pull strip breakage, or film wrinkles caused by the screen being tightly attached to the lower release film, greatly improving the smoothness of the peeling action and the success rate of film application.

[0024] In this embodiment of the present invention, a chamfered portion 119 is provided on the rear side wall of the through groove 111; The chamfered portion 119 on the rear side wall of the through groove 111 forms a guide entrance through the inclined structure. This effectively guides and positions the edge of the protective film 112 at the initial stage of insertion, significantly reducing insertion resistance and preventing the edge of the protective film 112 from curling, being damaged, or misaligned due to rigid collision with the groove. This ensures that the protective film 112 can be smoothly, accurately, and without damage inserted obliquely into the predetermined position in the receiving groove 110, greatly improving the convenience of operation and the success rate of one-time insertion, and further ensuring the continuity and overall effect of the subsequent film application process.

[0025] In this embodiment of the present invention, the inner side of the front frame 106 is provided with a first snap-fit ​​block 120 that engages with the front end of the device 116 to be applied with film, and the inner side of the rear frame 107 is provided with a second snap-fit ​​block 121 that engages with the rear end of the device 116 to be applied with film. The first snap-fit ​​block 120 located inside the front frame 106 and the second snap-fit ​​block 121 located inside the rear frame 107 have the advantage of forming a multi-point, opposite-directional snap-fit ​​fixation with the front and rear ends of the device 116 to be fitted (especially by using its standard charging port for insertion and cooperation). Together, they form a three-dimensional and stable constraint system, which can effectively limit the accidental movement or tilting of the device in any direction within the accommodating chamber 103. Thus, during the entire operation of inserting the protective film 112 and pulling the pull condition 109, it is ensured that the device 116 to be fitted always maintains a stable posture, which greatly improves the stability and accuracy of the film application process and completely avoids the problem of film application deviation or failure caused by device displacement. In one embodiment, the second card block 121 is plugged into the charging port of the device 116 to be coated.

[0026] In this embodiment of the present invention, a positioning groove 122 is provided on the back side of the substrate 101 opposite to the front frame 106, and a limiting post 123 is installed in the positioning groove 122. The positioning groove 122 provides a dedicated space for the structure extending from the front end of the protective film 112, effectively regulating the structure of the film layer and preventing the structure extending from the front end of the protective film 112 from lifting up. The limiting post 123 acts as a physical barrier, effectively pressing against and protecting the front end of the protective film 112 when the user pulls the pull condition 109 backward to peel off the release film. This reduces the reverse force and rebound tendency that may be generated during the peeling action, thereby ensuring that the main protective layer 130 remains as flat, stable and close to the screen as possible during the application process. This reduces problems such as incomplete adhesion, air bubbles or application failure caused by the front end of the film lifting up, improving the reliability of the operation and the final application quality.

[0027] In this embodiment of the present invention, an observation window 124 is provided on the inner bottom surface of the receiving groove 110; A visual operation channel is provided for users, allowing them to directly and clearly observe the relative position of the protective film 112 and the screen of the device 116 to be applied during the process of inserting the protective film 112 into the through slot 111 and the receiving slot 110. This ensures proper alignment and effectively avoids misalignment or incomplete insertion of the protective film 112 due to blind insertion. At the same time, this window also helps users to check in real time whether there is relative displacement or air bubbles between the main protective layer 130 and the screen when pulling the release film off the pull condition 109. This allows users to make timely adjustments and greatly improves the controllability, accuracy and success rate of the entire film application process.

[0028] In this embodiment of the utility model, the sidewalls of the front, rear, left and right side frames 105 are fixedly provided with limiting protrusions 125 that abut against and cooperate with the sidewalls of the film application device 116. By engaging in a tight, multi-point elastic contact with the side walls of the device 116 to be coated, a comprehensive three-dimensional constraint system is formed in the horizontal plane (X / Y axis) of the device. This effectively counteracts any minor shaking or horizontal displacement that may occur within the accommodating chamber 103. Consequently, during the entire dynamic operation of inserting the protective film 112 and pulling the pull condition 109, the device 116 to be coated is provided with extremely high lateral stability, ensuring that the device remains stable and fundamentally eliminating the problem of film misalignment caused by lateral movement of the device. This improves the accuracy, reliability, and success rate of the film coating operation.

[0029] A protective film 112 includes a main protective layer 130, an upper release layer 129 attached to the upper side of the main protective layer 130, and a lower release layer 126 attached to the lower side of the main protective layer 130. A pull condition 109 is provided on the lower side of the lower release layer 126. The protective film 112 is suitable for the above-mentioned applicator. A first extension 127 is provided at the front end of the lower release layer 126. The front end of the pull condition 109 is connected to the first extension 127 and extends out of the front end of the first extension 127. The lower release layer 126 has a first extension 127 at its front end, and the front end of the pull condition 109 is not only connected to this extension but also extends forward to provide a better force application effect for the pull condition 109, ensuring better peeling of the lower release film. By extending the lever arm, the action control of pulling the pull condition 109 is more precise, and at the same time, it is ensured that the peeling force can be better applied to the front end of the lower release layer 126, thereby achieving smooth peeling of the lower release layer 126. This avoids wrinkles and scratches on the screen caused by improper pulling angles in the first extension 127 at the front end of the lower release layer 126, improving the smoothness, reliability and final adhesion effect of the film application process.

[0030] In one embodiment, the tensile condition 109 is a plastic sheet with a Shore hardness of 80A or higher, possessing a certain degree of toughness and hardness, thereby facilitating the movement of the lower release layer 126.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A quick-insertion film applicator, characterized in that, The substrate (101) includes a limiting frame (102) on the substrate (101). The limiting frame (102) and the substrate (101) cooperate to form an accommodating chamber (103). The limiting frame (102) includes a left side frame (104) and a right side frame (105) symmetrically arranged on the left and right sides of the substrate (101), and a front side frame (106) and a rear side frame (107) symmetrically arranged on the front and rear sides of the substrate (101). A release groove (108) for extending out of the pull condition (109) is provided on the rear frame (107); The inner bottom surface of the accommodating chamber (103) is provided with an accommodating groove (110) for accommodating the protective film (112), and the front end of the inner bottom surface of the accommodating groove (110) is provided with a through groove (111).

2. The quick-insertion film applicator according to claim 1, characterized in that, The substrate (101) has a first pull groove (113) at its rear end that communicates with the receiving groove (110).

3. The quick-insertion film applicator according to claim 1, characterized in that, A stop block (114) is provided on the substrate (101) in the release groove (108). The stop block (114) extends out of the plane of the substrate (101). A second pull groove (115) communicating with the first pull groove (113) is provided on the stop block (114). The second pull groove (115) is used to accommodate the pull condition (109).

4. The quick-insertion film applicator according to claim 1, characterized in that, The inner sides of the left frame (104) and the right frame (105) are provided with a first protrusion (117) that abuts against the film-applying device (116), and the inner side of the front frame (106) is provided with a second protrusion (118) that abuts against the film-applying device (116). The first protrusion (117) and the second protrusion (118) extend out of the plane of the substrate (101).

5. A quick-insertion film applicator according to claim 4, characterized in that, The rear side wall of the through groove (111) is provided with a chamfered part (119).

6. A quick-insertion film applicator according to any one of claims 1-5, characterized in that, The inner side of the front frame (106) is provided with a first snap-fit ​​block (120) that engages with the front end of the device to be applied (116), and the inner side of the rear frame (107) is provided with a second snap-fit ​​block (121) that engages with the rear end of the device to be applied (116).

7. A quick-insertion film applicator according to claim 6, characterized in that, The back of the substrate (101) opposite to the front frame (106) is provided with a positioning groove (122), and a limiting post (123) is installed in the positioning groove (122).

8. A quick-insertion film applicator according to claim 7, characterized in that, An observation window (124) is provided on the inner bottom surface of the receiving groove (110).

9. A quick-insertion film applicator according to claim 8, characterized in that, The sidewalls of the front, rear, left and right frames (105) are fixed with limiting protrusions (125) that abut against the sidewalls of the film-applying device (116).

10. A protective film, comprising a main protective layer, an upper release layer adhered to the upper side of the main protective layer, and a lower release layer adhered to the lower side of the main protective layer, wherein the lower release layer has a pull condition on its lower side, characterized in that, The protective film (112) is applicable to the applicator according to any one of claims 1-8, the front end of the lower release layer (126) is provided with a first extension (127), the front end of the pull condition (109) is connected to the first extension (127), and the front end of the pull condition (109) extends out of the front end of the first extension (127).

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