A quick-change roller type universal mobile phone film applicator
By designing a quick-change roller-type universal screen protector device, the problems of cumbersome roller replacement and high difficulty in applying screen protectors to mobile phones have been solved. It enables quick roller replacement and diversified adaptation, improving the quality and efficiency of screen protector application.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN BITU TECHNOLOGY CO LTD
- Filing Date
- 2025-04-22
- Publication Date
- 2026-06-05
Smart Images

Figure CN224324203U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of screen protector technology, and in particular relates to a quick-change roller-type universal mobile phone screen protector. Background Technology
[0002] In modern industrial production, electronic product manufacturing, and daily life, screen protector application is a common and important process. For example, in scenarios such as screen protectors for mobile phones, tablets, and other electronic products, automotive window tinting, and surface protective films for various industrial products, the quality and efficiency of screen protector application directly affect the product's appearance, performance, and lifespan.
[0003] Currently, various film application devices exist on the market, which achieve automated or semi-automated film application operations to a certain extent, improving the accuracy and consistency of film application. However, existing film application devices still have several shortcomings in the design and use of rollers.
[0004] In existing film application devices, the rollers are typically fixedly connected to the pushing components using fasteners such as bolts and nuts. While this connection method ensures the stability of the rollers during operation, the replacement process becomes extremely cumbersome when the rollers wear out, become damaged, or need to be replaced with different types to suit different film application requirements. Operators need to use specialized tools and go through a series of complex steps, including disassembling multiple parts and loosening fasteners, to complete the roller replacement. This not only consumes a lot of time and effort but also increases the difficulty and labor intensity of operation. Furthermore, most of these film application devices can only be equipped with rollers of fixed specifications, making it difficult to meet the diverse needs of different film application tasks.
[0005] The problem is particularly pronounced in the niche market of mobile phone screen protectors. For the average consumer, applying a screen protector is not an easy task. An ideal application process requires skill and patience: precisely aligning the protector with the phone screen, then slowly lowering it while carefully removing any air bubbles between the protector and the screen. However, for most ordinary consumers, especially those lacking experience, this process is fraught with challenges. Bubbles, wrinkles, and edge lifting are common problems during application, severely impacting the quality and effectiveness of the protector. This not only frustrates consumers but also limits the further promotion and application of screen protector application devices in the mobile phone screen protector market.
[0006] Therefore, the inventors dedicated themselves to designing a mobile phone screen protector applicator to solve the above problems. Utility Model Content
[0007] The purpose of this invention is to provide a quick-change roller-type universal film applicator, which can quickly change the rollers and facilitate the rapid application of film to various products.
[0008] Another objective of this invention is to provide a quick-change roller-type universal screen protector applicator that allows for rapid roller replacement, enabling quick application of screen protectors to different mobile phones, reducing the difficulty of screen protector application, and improving the quality of screen protector application.
[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0010] A quick-change roller-type universal film applicator includes a pusher. The bottom of the pusher has a through groove forming a U-shape. A roller is placed in the through groove. Rotation grooves are respectively provided on the two inner side walls of the through groove. The two ends of the roller are respectively located in the two rotation grooves so that the roller rolls as the pusher pushes. Both rotation grooves are open relative to the bottom of the pusher to facilitate quick replacement of the roller.
[0011] As an improvement of the quick-change roller universal film applicator of this utility model, the upper end of the pusher is provided with grooves on two corresponding push sides to form a handle. The handle is located on the top of the pusher and is integrally formed from the same material as the pusher.
[0012] As an improvement of the quick-change roller-type universal film applicator of this utility model, the groove is recessed into the interior of the pusher and is in the shape of an elongated arc, and the thickness of the handle gradually increases from top to bottom.
[0013] As an improvement of the quick-change roller-type universal film applicator of this utility model, the pushing member is provided with a plurality of anti-slip grooves on the two outer end faces along the axial direction of the roller, the anti-slip grooves are inclined, and the pushing member is elongated along the axial direction of the roller.
[0014] As an improvement of the quick-change roller-type universal film applicator of this utility model, the roller includes a wheel body and a fixed shaft. The wheel body is fixedly sleeved on the fixed shaft, and the two ends of the fixed shaft extend out of the wheel body in its axial direction and are respectively located in the two rotating grooves.
[0015] As an improvement of the quick-change roller-type universal film applicator of this utility model, the inner top wall of the rotating groove is semi-circular and matches the fixed shaft.
[0016] To achieve the other objective mentioned above, the technical solution adopted by this utility model is as follows:
[0017] A mobile phone screen protector applicator includes the aforementioned quick-change roller-type universal screen protector applicator.
[0018] As an improvement of the mobile phone screen protector of this utility model, the mobile phone screen protector also includes a limiting box, the top of which is provided with a placement slot for placing a mobile phone, and the pushing member is located above the limiting box and its two ends are slidably connected to the limiting box.
[0019] As an improvement of the mobile phone screen protector of this utility model, the top of the limiting box is provided with two sliding platforms spaced apart, the placement groove is located between the two sliding platforms, the bottom of the pushing member is provided with at least one pair of sliding grooves, the through groove and the roller are located together between the same pair of sliding grooves, and the two sliding platforms slide in cooperation with any pair of sliding grooves.
[0020] As an improvement of the mobile phone screen protector of this utility model, the two slides are connected by two connecting platforms to form a frame-shaped annular protrusion, and the annular protrusion is arranged in a circle around the placement groove.
[0021] Compared with existing technologies, this utility model's quick-change roller-type universal film applicator features a through groove at the bottom of the pushing component, with the roller placed within it. Rotating slots, open relative to the bottom of the pushing component, are located on the two inner sidewalls of the through groove, ensuring that both ends of the roller are positioned within these slots. This design not only allows the roller to roll as the pushing component moves, but more importantly, because the rotating slots are open relative to the bottom of the pushing component, operators can easily and quickly change the roller from the bottom without the need for special tools, greatly simplifying the roller replacement operation and improving efficiency. Furthermore, this device can accommodate various roller sizes, meeting the diverse needs of different film application tasks and facilitating rapid film application to various products.
[0022] Compared with the existing technology, the mobile phone screen protector applicator of this utility model uses a quick-change roller-type universal screen protector device for mobile phone screen protector application. It can not only quickly change the roller to apply screen protectors to different mobile phones, but also reduce the difficulty of screen protector application and improve the speed and quality of screen protector application. Attached Figure Description
[0023] Figure 1 This is a three-dimensional enlarged view of the quick-change roller-type universal film applicator of this utility model;
[0024] Figure 2 This is another three-dimensional enlarged view of the quick-change roller-type universal film applicator of this utility model;
[0025] Figure 3 yes Figure 2 Enlarged view of point A in the middle;
[0026] Figure 4 This is a three-dimensional exploded and enlarged view of the quick-change roller-type universal film applicator of this utility model;
[0027] Figure 5This is a cross-sectional enlarged view of the quick-change roller-type universal film applicator of this utility model;
[0028] Figure 6 This is another enlarged cross-sectional view of the quick-change roller-type universal film applicator of this utility model;
[0029] Figure 7 This is a three-dimensional enlarged view of the mobile phone screen protector applicator of this utility model;
[0030] Figure 8 This is a three-dimensional enlarged view of the limiting box body of this utility model;
[0031] Figure 9 This is a cross-sectional enlarged view of the mobile phone screen protector applicator of this utility model.
[0032] Illustration:
[0033] 1. Pushing component; 11. Groove; 12. Handle; 13. Anti-slip groove; 14. First sliding groove; 15. Second sliding groove; 151. Rotating groove; 16. Through groove; 2. Roller; 21. Fixed shaft; 22. Wheel body; 3. Limiting box; 31. Placement groove; 32. Slide table; 33. Connecting table; 4. Mobile phone; 5. Protective film. Detailed Implementation
[0034] The embodiments of this utility model are described in detail below with reference to the accompanying drawings. The drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of this utility model.
[0035] Reference Figures 1 to 6 A quick-change roller-type universal film applicator includes a pusher 1 and a roller 2. The bottom of the pusher 1 is provided with a through groove 16 to form a U-shape. The roller 2 is placed in the through groove 16. The two inner side walls of the through groove 16 are respectively provided with a rotating groove 151. The two ends of the roller 2 are respectively located in the two rotating grooves 151 so that the roller 2 rolls as the pusher 1 pushes. The two rotating grooves 151 are open relative to the bottom of the pusher 1 to facilitate quick-change of the roller 2.
[0036] Reference Figures 1 to 6 The upper end of the pusher 1 has two corresponding push sides with grooves 11 to form a handle 12. The grooves 11 are recessed into the interior of the pusher 1 and are long arc-shaped. The thickness of the handle 12 gradually increases from top to bottom. The handle 12 is located at the top of the pusher 1 and is integrally formed from the same material as the pusher 1. The two outer end faces of the pusher 1 along the axis of the roller 2 are provided with multiple anti-slip grooves 13. Each anti-slip groove 13 is long and inclined. The pusher 1 is long and inclined along the axis of the roller 2.
[0037] Reference Figure 4 , Figure 5 and Figure 6The roller 2 includes a wheel body 22 and a fixed shaft 21. The wheel body 22 is fixedly sleeved on the fixed shaft 21. The two ends of the fixed shaft 21 extend out of the wheel body 22 in its axial direction and are respectively located in two rotating grooves 151. The inner top wall of the rotating groove 151 is semi-circular and matches the fixed shaft 21.
[0038] Reference Figures 1 to 6 The method of using the quick-change roller-type universal film applicator of this utility model is as follows:
[0039] First, clean the surface of the electronic product (such as a mobile phone, tablet computer, etc.) to be covered with the film. Then, place the film to be covered on the surface of the electronic product. Next, place the roller 2 and the pusher 1 in sequence, so that the two ends of the roller 2 are respectively located in the two rotating grooves 151 at the bottom of the pusher 1. Push the pusher 1 back and forth to make the roller 2 roll back and forth on the film to complete the bonding.
[0040] This utility model discloses a quick-change roller-type universal film applicator. A through groove 16 is provided at the bottom of the pushing component 1, and the roller 2 is placed within the through groove 16. Rotating grooves 151, open relative to the bottom of the pushing component 1, are provided on the two inner sidewalls of the through groove 16, so that both ends of the roller 2 are respectively located within the two rotating grooves 151. This design not only allows the roller 2 to roll as the pushing component 1 pushes, but more importantly, because the rotating grooves 151 are open relative to the bottom of the pushing component 1, operators can easily and quickly change the roller 2 from the bottom without the need for special tools, greatly simplifying the roller 2 replacement operation and improving replacement efficiency. At the same time, this device can adapt to various specifications of rollers 2, meeting the diverse needs of different film application tasks and facilitating rapid film application to various products.
[0041] Reference Figures 1 to 9 A mobile phone screen protector applicator, comprising the aforementioned quick-change roller-type universal screen protector device, is used to apply screen protectors to mobile phones.
[0042] Reference Figures 7 to 9 In order to facilitate the positioning of mobile phone 4, the mobile phone screen protector of this utility model also includes a limiting box 3. The top of the limiting box 3 is provided with a placement groove 31 for placing mobile phone 4. The pushing member 1 is located above the limiting box 3 and its two ends are slidably connected to the limiting box 3.
[0043] Reference Figure 1 , Figure 2 , Figure 3 and Figure 9The top of the limiting box 3 is provided with two sliding platforms 32 spaced apart, and the placement groove 31 is located between the two sliding platforms 32. The bottom of the pusher 1 is provided with at least one pair of sliding grooves. In this utility model, two pairs of sliding grooves are preferred. The through groove 16 and the roller 2 are located together between the same pair of sliding grooves. Specifically, the two pairs of sliding grooves are a pair of first sliding grooves 14 and a pair of second sliding grooves 15. The pair of second sliding grooves 15 are located between the pair of first sliding grooves 14, and the through groove 16 is located between the pair of second sliding grooves 15. The two rotating grooves 151 are respectively located on the side wall between the second sliding groove 15 and the through groove 16. The two sliding platforms 32 slide in cooperation with the pair of first sliding grooves 14 or the pair of second sliding grooves 15. In order to prevent the pusher 1 from sliding out of the limiting box 3, the two sliding platforms 32 are connected by two connecting platforms 33 to form a frame-shaped annular boss. The entire annular boss is arranged in a circle around the placement groove 31.
[0044] Reference Figures 1 to 9 The method of using the mobile phone screen protector applicator of this utility model is as follows:
[0045] First, clean the screen of phone 4;
[0046] Place the phone 4 in the placement slot 31 of the limiting box 3 (with the screen of the phone 4 facing up).
[0047] Place the screen protector 5 to be applied onto the screen of phone 4;
[0048] Roller 2 and pusher 1 are placed in sequence, so that the two ends of roller 2 are respectively located in the two rotating grooves 151 at the bottom of pusher 1, and the pair of first sliding grooves 14 at the bottom of pusher 1 are slidably engaged with the two slides 32.
[0049] Push the pusher 1 back and forth to make the roller 2 roll back and forth on the protective film 5 to complete the bonding.
[0050] This utility model of a mobile phone screen protector applicator uses a quick-change roller-type universal screen protector device for applying screen protectors to mobile phones. It can not only quickly change the roller 2 to quickly apply screen protectors to different mobile phones, but also reduce the difficulty of applying screen protectors to mobile phones and improve the quality of screen protector application.
[0051] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of protection of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the patent application of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A quick-change roller-type universal mobile phone screen protector applicator, characterized in that, The device includes a pusher and a limiting box. The bottom of the pusher has a through groove forming a U-shape, and a roller is placed in the through groove. Rotating grooves are provided on the two inner sidewalls of the through groove. The two ends of the roller are located in the two rotating grooves respectively, so that the roller rolls as the pusher pushes it. Both rotating grooves are open relative to the bottom of the pusher for easy roller replacement. The top of the limiting box has a placement slot for placing a mobile phone. The pusher is located above the limiting box, and its two ends are slidably connected to the limiting box. The top of the limiting box has two sliding platforms spaced apart, and the placement slot is located between the two sliding platforms. The bottom of the pusher has at least one pair of sliding grooves. The through groove and the roller are located between the same pair of sliding grooves, and the two sliding platforms slide in cooperation with any pair of sliding grooves.
2. The quick-change roller-type universal mobile phone screen protector applicator according to claim 1, characterized in that, The upper end of the pusher has two corresponding push sides with grooves to form a handle. The handle is located on the top of the pusher and is integrally formed from the same material as the pusher.
3. The quick-change roller-type universal mobile phone screen protector applicator according to claim 2, characterized in that, The groove is recessed into the interior of the pusher and is in the shape of an elongated arc, and the thickness of the handle gradually increases from top to bottom.
4. The quick-change roller-type universal mobile phone screen protector applicator according to claim 1, characterized in that, The pusher is provided with multiple anti-slip grooves on its two outer end faces along the axial direction of the roller. The anti-slip grooves are inclined, and the pusher is elongated along the axial direction of the roller.
5. The quick-change roller-type universal mobile phone screen protector applicator according to claim 1, characterized in that, The roller includes a wheel body and a fixed shaft. The wheel body is fixedly sleeved on the fixed shaft, and the two ends of the fixed shaft extend out of the wheel body in the axial direction and are respectively located in the two rotating grooves.
6. The quick-change roller-type universal mobile phone screen protector applicator according to claim 5, characterized in that, The inner top wall of the rotating groove is semi-circular and matches the fixed shaft.
7. The quick-change roller-type universal mobile phone screen protector applicator according to claim 1, characterized in that, The two slides are connected by two connecting platforms to form a frame-shaped annular boss, which is arranged in a circle around the placement groove.