A dust-free screen protector applicator, screen protector kit, and screen protector application method.

Abstract

This application relates to the technical field of screen protector application methods, and discloses a dust-free screen protector applicator, a screen protector kit, and a screen protector application method for connecting a screen protector to a mobile terminal. The screen protector has a dust-absorbing release film layer, a protective film layer, and a positioning film layer stacked sequentially. The dust-free screen protector applicator includes: a housing with multiple terminal limiting members disposed thereon, which limit the mobile terminal and form a screen protector cavity; a film limiting connecting part disposed on the housing and located outside the screen protector cavity, which connects to the positioning film layer so that the protective film layer faces the screen of the mobile terminal; and an elastic member disposed on the housing and located on the side of the screen protector away from the mobile terminal. The elastic member is compressed by force when the dust-absorbing release film layer is pulled out of the screen protector cavity, and the protective film layer is adhered to the screen of the mobile terminal by the rebound force of the elastic member. This solves the problem in the prior art where the protective film is easily accidentally pressed during operation.

Description

Technical Field

[0001] This application relates to the field of film application methods, and more particularly to a dust-free film applicator, film application kit, and film application method. Background Technology

[0002] Existing screen protector applicators typically include a housing. The screen protector is placed inside the housing and positioned accordingly. The phone is then placed into the applicator and positioned so that the phone screen is directly facing the screen protector. A release film is pulled out from one end of the housing, covering the screen protector. Then, the pressing window on the back of the housing is pressed, allowing the screen protector to be applied to the phone screen with a finger, ensuring accurate adhesion.

[0003] Existing screen protector applicators all require users to press the protective film through a window (pressing window) with their fingers, which involves multiple steps. Especially during the application process, users need to follow the guidance of the pressing window to press or slide at fixed positions (along the pressing window) to achieve the desired adhesion. However, different users' understanding and perception may not align with the designers and manufacturers, leading users to press wherever there is a hole. As a result, users may accidentally press directly into the pressing window, causing air bubbles and affecting the application of the protective film.

[0004] Therefore, the current situation and technology still need to be improved and developed. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a dust-free film applicator, film application kit and film application method to solve the problem that the protective film is accidentally pressed directly into the pressing window during operation, resulting in the formation of air bubbles.

[0006] The technical solution of this application is as follows:

[0007] On the one hand, this application proposes a dust-free screen protector for connecting a screen protector to a mobile terminal. The screen protector has a dust-absorbing release film layer, a protective film layer and a positioning film layer stacked in sequence. The dust-free screen protector includes: a housing on which multiple terminal limiting members are provided. The multiple terminal limiting members are used to limit the mobile terminal and the multiple terminal limiting members form a screen protector cavity.

[0008] A diaphragm limiting connection part is disposed on the housing and located outside the film application cavity. The diaphragm limiting connection part is used to connect with the positioning film layer so that the protective film layer faces the screen of the mobile terminal.

[0009] An elastic element is disposed on the housing and located on the side of the screen film facing away from the mobile terminal;

[0010] The elastic element is compressed when the dust-collecting release film is pulled out of the film-applying cavity, and the protective film is adhered to the screen of the mobile terminal by the rebound force of the elastic element.

[0011] Optionally, the diaphragm limiting connection includes a first limiting member and a second limiting member spaced apart along the width direction, the first limiting member and the second limiting member having different sizes and / or shapes.

[0012] Optionally, the first limiting member and the second limiting member are of different sizes, and both the first limiting member and the second limiting member include:

[0013] Connecting post, the connecting post is connected to the shell along the thickness direction;

[0014] The column head is located at the end of the connecting column that is away from the housing, and the column head protrudes from the outer circular surface of the connecting column.

[0015] The connecting post is used to connect to the positioning hole of the positioning film to limit the positioning film; the post head is used to limit the positioning film from coming off the connecting post.

[0016] Optionally, the connecting column forms a movable section between the column head and the shell surface, and the positioning membrane layer moves along the movable section through the limiting hole;

[0017] The distance between the active segments is 0.3mm-0.8mm;

[0018] The column capital is a hemispherical capital, and the top of the hemispherical capital is aligned with the top of the connecting column to form an arc-shaped surface.

[0019] Optionally, the housing has a diaphragm inlet and outlet, and the diaphragm inlet and outlet and the diaphragm limiting connection part are respectively located at both ends of the length direction of the housing. The diaphragm inlet and outlet are connected to the film application cavity, and the screen film enters the film application cavity through the diaphragm inlet and outlet.

[0020] The two inner walls of the membrane inlet and outlet in the width direction respectively abut against and limit the two sides of the membrane layer in the width direction;

[0021] The elastic element is located inside the film-applying cavity and on the side near the film inlet and outlet. When the release film is pulled out from the film inlet and outlet by the dust-collecting release film layer, the elastic element is compressed by force.

[0022] Optionally, the housing includes: a back plate, and a diaphragm limiting connection portion disposed on the front side of the back plate;

[0023] Side plate, the side plate surrounds the front of the back plate, and the side plate facing the end of the diaphragm limiting connection part is spaced apart and forms a side opening. The positioning membrane layer has a protruding section, the protruding section protrudes from the side opening and fits into the diaphragm limiting connection part.

[0024] A diaphragm inlet and outlet is provided on the side plate opposite to the side opening. Under the elastic force of the elastic element, the dust suction release film layer abuts against the top inner wall of the diaphragm inlet and outlet.

[0025] The elastic element extends along the width direction and is disposed on the front side of the back plate;

[0026] The elastic element is a sponge strip, EVA elastic strip, silicone strip, or elastic plastic strip.

[0027] Optionally, the back panel is a solid panel with no perforated areas on the surface.

[0028] Optionally, the terminal limiting member is disposed on the housing along the length and width directions;

[0029] The terminal limiting component includes: a support boss, which is disposed on the front surface of the housing;

[0030] Side support columns are set on the support boss along the thickness direction. A limiting step is formed between the inner side of the side support column and the front surface of the support boss. The edge of the mobile terminal's screen abuts against the limiting step.

[0031] Secondly, the present invention also provides a screen protector kit, including the dust-free screen protector applicator as described above, and a screen protector.

[0032] The screen protector comprises a dust-collecting release film layer, a protective film layer, and a positioning film layer stacked sequentially;

[0033] The dust collection release film layer includes: a tear-off piece and a release liner;

[0034] The screen protector is placed in a dust-free screen protector applicator and is used to apply the screen protector to mobile terminals.

[0035] Thirdly, the present invention also proposes a film application method for the dust-free film applicator described above, the film application method comprising the following steps:

[0036] The assembled screen protector is placed into the film application cavity, and the positioning film layer of the screen protector is connected to the film limiting connection part;

[0037] The mobile terminal is placed on the terminal limiting component so that the screen of the mobile terminal is facing the protective film layer of the screen film.

[0038] Pull the dust-collecting release film layer of the screen film outward along the length direction. When the dust-collecting release film layer separates from the protective film layer, it comes into contact with the screen of the mobile terminal to collect dust, while the elastic element is compressed by force.

[0039] Once the dust-collecting release film is completely removed, the elastic element rebounds and pushes the positioning film and protective film, causing the protective film to automatically adhere to the screen of the mobile terminal.

[0040] The beneficial effects of the dust-free screen protector applicator, applicator kit, and applicator method provided by this invention are at least as follows: When the dust-collecting release film layer detaches from the protective film layer, the dust-collecting release film layer contacts the screen of the mobile terminal to collect dust, while simultaneously compressing the elastic element. When the dust-collecting release film layer is completely removed, the elastic element rebounds and pushes the positioning film layer and the protective film layer, causing the protective film layer to automatically adhere to the screen of the mobile terminal. Using this dust-free screen protector applicator to achieve automatic adhesion between the protective film layer and the screen simplifies the application process. The application is completed with a simple one-click application, eliminating the need to press the screen protector, reducing user steps, lowering the chance of misoperation, and preventing accidental pressing of the screen protector, thus avoiding the formation of air bubbles caused by users accidentally pressing directly onto the protective film. This significantly improves the screen protector application effect. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of a dust-free film applicator according to an embodiment of this application;

[0042] Figure 2 This is a diagram illustrating the usage state of a dust-free film applicator during film application, according to an embodiment of this application.

[0043] Figure 3 This is an exploded view of a dust-free film applicator during film application, according to an embodiment of this application.

[0044] Figure 4 for Figure 3 Enlarged view of point A;

[0045] Figure 5 This is an exploded view of a screen protector of a screen protector kit according to an embodiment of this application;

[0046] Figure 6 This is a diagram illustrating the usage state of a film application kit according to an embodiment of this application during film application;

[0047] Figure 7 for Figure 6 Enlarged view of point B;

[0048] Figure 8 for Figure 6 Enlarged view of point C.

[0049] The following are the labels in the diagram: 10, Mobile phone; 100, Housing; 110, Film application cavity; 120, Back panel; 130, Edge guard plate; 131, Side opening; 132, Film inlet / outlet; 200, Film limiting connection part; 210, First limiting component; 211, Connecting post; 212, Post head; 213, Movable section; 220, Second limiting component; 300, Terminal limiting component; 310, Support boss; 320, Side support post; 330, Limiting step; 400, Elastic component; 500, Screen film; 510, Dust collection release film layer; 511, Tear-off component; 512, Release component; 520, Protective film layer; 521, Adhesive layer; 530, Positioning film layer; 531, Positioning body piece; 532, Protruding section; 533, Limiting hole. Detailed Implementation

[0050] This application provides a dust-free film applicator, a film application kit, and a film application method. To make the objectives, technical solutions, and effects of this application clearer and more explicit, the following describes optional aspects of this application in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0051] Existing screen protector applicators require pressing or swiping in specific positions and directions within a pressing window to achieve the desired adhesion. However, different users' understanding and perception may differ from the designer's and manufacturer's. Users may press anywhere with holes, often failing to adhere to the designed pressure and direction, resulting in poor adhesion. This is a major headache for sales, especially online sales, when receiving negative reviews and returns. This application addresses this problem through the following embodiments.

[0052] Example 1

[0053] like Figure 1 , Figure 2 , Figure 3 As shown, this embodiment proposes a dust-free screen protector applicator for connecting the screen protector 500 to a mobile terminal, such as... Figure 5As shown, the screen protector 500 used with this dust-free screen protector applicator has a dust-absorbing release film layer 510, a protective film layer 520, and a positioning film layer 530 stacked sequentially. When the dust-free screen protector applicator is placed horizontally and the screen protector 500 is placed inside the applicator, with the mobile terminal above it. The dust-absorbing release film layer 510, the protective film layer 520, and the positioning film layer 530 in the screen protector 500 are arranged sequentially from top to bottom. During the application process, the positioning film layer 530 at the bottom is used to connect with and limit the position of the applicator. By peeling the dust-absorbing release film layer 510 off the surface of the protective film layer 520, the middle protective film layer 520 is positioned facing the screen of the mobile terminal. Once the protective film layer 520 is adhered to the screen, the application is complete. Then, the positioning film layer 530 is separated from the protective film layer 520, allowing the positioning film layer 530 to stably cover the surface of the screen and protect it. In this embodiment, the mobile terminal can be an electronic terminal product such as a tablet computer, a mobile phone 10, or an e-reader. For ease of structural description, a mobile phone 10 will be used as an example for structural explanation.

[0054] The dust-free screen protector applicator includes a housing 100, a film limiting connection part 200, and an elastic element 400. The outer contour of the housing 100 can match the outer contour of the mobile phone 10, therefore the housing 100 has a square structure, with the direction of the long side of the housing 100 as the length direction, the direction of the short side as the width direction, and the vertical direction as the thickness direction. The upper surface of the housing 100 is the front, and the lower surface is the back. Multiple terminal limiting members 300 are provided on the housing 100. The multiple terminal limiting members 300 can be arranged along the length and width directions. When the mobile phone 10 is placed between the multiple terminal limiting members 300, the position of the mobile phone 10 on the horizontal plane is defined. The multiple terminal limiting members 300 surround a screen protector cavity 110. Therefore, the screen protector cavity 110 is a square area formed by the multiple terminal limiting members 300. The mobile phone 10 and the protective film layer 520 of the screen protector 500 are both located in this area, so that the two are aligned. A film limiting connection part 200 is disposed on the housing 100 and located outside the film application cavity 110. The film limiting connection part 200 is used to connect with the positioning film layer 530 so that the protective film layer 520 faces the screen of the mobile phone 10. In the specific structure, the positioning film layer 530 has a positioning body piece 531 and a protruding section 532. The positioning body piece 531 is located inside the film application cavity 110 and the protruding section 532 extends outside the film application cavity 110. A limiting hole 533 is provided on the protruding section 532. The positioning film layer 530 is connected to the film limiting connection part 200 through the limiting hole 533. By connecting the positioning film layer 530 with the film limiting connection part 200, the length direction of the screen film 500 can be limited, making it difficult for the screen film 500 to move in the length direction. The elastic element 400 is disposed on the front of the housing 100 and located on the side of the screen film 500 opposite to the mobile phone 10. Thus, from top to bottom, the mobile phone 10, the screen film 500, and the elastic element 400 are arranged in that order. The elastic element 400 is elastic and is compressed when the dust-collecting release film layer 510 is pulled out from the film application cavity 110. The protective film layer 520 is adhered to the screen of the mobile phone 10 by the rebound force of the elastic element 400. In the specific process, the elastic element 400 initially causes the screen film 500 to fully abut against the screen of the mobile phone 10. When the dust-collecting release film layer 510 separates from the protective film layer 520, the dust-collecting release film layer 510 needs to be pulled out from one side along the length direction. The dust-collecting release film layer 510 flips from the end opposite to the pulling end and begins to separate from the protective film layer 520. The pulling end of the dust-collecting release film layer 510 is subjected to downward force, thereby compressing the elastic element 400. The elastic element 400 has elasticity. When the dust-collecting release film layer 510 is completely pulled out, the elastic element 400 rebounds and pushes the positioning film layer 530 and the protective film layer 520, so that the protective film layer 520 automatically adheres to the screen of the mobile phone 10.

[0055] like Figure 2 , Figure 3 , Figure 6As shown, the working principle and effect of this dust-free screen protector in this embodiment are as follows: The assembled screen protector 500 is placed in the screen protector cavity 110, and the positioning film layer 530 of the screen protector 500 is connected to the film limiting connection part 200. The mobile phone 10 is then placed on the terminal limiting member 300 so that the screen of the mobile phone 10 is directly facing the protective film layer 520 of the screen protector 500. Then, the dust-absorbing release film layer 510 of the screen protector 500 is pulled outwards along its length. When the dust-absorbing release film layer 510 separates from the protective film layer 520, it contacts the screen of the mobile phone 10 to absorb dust, while simultaneously compressing the elastic member 400. When the dust-absorbing release film layer 510 is completely removed, the elastic member 400 rebounds and pushes the positioning film layer 530 and the protective film layer 520, causing the protective film layer 520 to automatically adhere to the screen of the mobile phone 10. This dust-free screen protector applicator automatically adheres the protective film layer 520 to the screen, making screen protector application simpler. The application process is as simple as opening and closing the applicator, eliminating the need to press the screen protector itself. This reduces user steps and the chance of errors, preventing accidental pressing of the screen protector 500 and avoiding air bubbles caused by users accidentally pressing directly onto the protective film. This significantly improves the screen protector application result.

[0056] like Figure 1 , Figure 3As shown, the housing 100 in this embodiment further includes a back plate 120 and a side plate 130. The back plate 120 can be a flat plate, generally square in shape. The side plate 130 surrounds the front surface of the back plate 120. Multiple side plates 130 can be provided, or there can be a single side plate 130, which surrounds the front surface of the back plate 120 and forms an inner cavity. The film-applying cavity 110 is located in the area surrounded by the side plate 130. The film-limiting connection portion 200 is located outside the area surrounded by the side plate 130 and is provided on the front surface of the back plate 120. In the length direction, the side plate 130 facing the end of the film-limiting connection portion 200 is spaced apart to form a side opening 131. When the screen film 500 is placed on the housing 100, the protruding section 532 of the positioning film layer 530 protrudes from the side opening 131 and sleeves the film-limiting connection portion 200. Along the length direction, a film inlet / outlet 132 is provided on the side plate 130 opposite to the side opening 131. The film inlet / outlet 132 is connected to the film application cavity 110. The film inlet / outlet 132 has a hole structure, and its upper, lower, left, and right sides all have inner walls. The film inlet / outlet 132 and the film limiting connection part 200 are respectively located at both ends of the housing 100 along the length direction. The screen film 500 is inserted into the inner cavity of the housing 100 through the film inlet / outlet 132, so that the positioning film layer 530 is connected to the film limiting connection part 200 at the other end for limiting and fixing, and the dust suction release film layer 510 is partially located outside the film inlet / outlet 132, so that the user can easily pull out the dust suction release film layer 510 along the length direction. The elastic element 400 is located inside the film application cavity 110 and near the film inlet / outlet 132. When the dust-collecting release film layer 510 is pulled out from the film inlet / outlet 132, the elastic element 400 is compressed. The elastic element 400 squeezes the screen film 500 at one end in the length direction, so that the edge of the protective film layer 520 in the length direction contacts the screen of the mobile phone 10 first. The surface of the protective film layer 520 has a layer of adhesive layer 521 (AB glue) for bonding with the screen. After the end in the length direction is bonded, under the adhesive force of the AB glue, the protective film layer 520 will automatically and regularly adhere along the length direction, thereby completing the bonding of the entire protective film layer 520 to the screen.

[0057] like Figure 1 , Figure 2As shown, further, the two inner walls of the membrane inlet / outlet 132 in the width direction respectively abut against and limit the two sides of the positioning film layer 530 in the width direction. In the specific structure, the length of the membrane inlet / outlet 132 in the width direction matches the width of the positioning film layer 530, so that the positioning film layer 530 is just inserted into the membrane inlet / outlet 132 and will not move in the left and right directions. The width direction is positioned by the inner walls on the left and right sides of the membrane inlet / outlet 132, so that the size of the protective film layer 520 is not limited. Thus, protective film layers 520 of different lengths and widths can be designed according to needs to form different types of protective films. For the same mobile phone screen, due to personalized needs, manufacturers will have different size solutions and processes. For example, the screen area covered by screen-printed edge tempered glass films and 3D protective films is different, resulting in different sizes of protective film layers 520.

[0058] In addition, by limiting the width of the screen film 500 by the width direction of the inlet and outlet 132 of the film, it is possible to avoid using the film limiting connection part 200 to limit both the length and width directions at the same time. Therefore, the film limiting connection part 200 only limits the length direction, so the connecting hole on the protruding section 532 that matches it can be slightly larger in the width direction. This makes it easier for the connecting hole to fit into the film limiting connection part 200 without causing the screen film 500 to move in the length direction, thus achieving a better limiting effect.

[0059] like Figure 1 , Figure 6 , Figure 8 As shown, further, under the elastic force of the elastic member 400, the dust-collecting release film layer 510 abuts against the top inner wall of the film inlet / outlet 132. In the specific structure, in the initial state, when the screen film 500 is inserted into the film application cavity 110, the elastic member 400 is already in a compressed state, so that after the dust-collecting release film layer 510 is pulled out, the elastic member 400 returns to its original position and abuts one end of the protective film layer 520 against the screen of the mobile phone 10. Furthermore, the dust-free screen protector applicator can be sold together with the screen protector 500. During the sales process, the screen protector 500 is directly connected to the dust-free screen protector applicator, making the entire dust-free screen protector applicator a protective shell for the screen protector 500. During transportation, the elastic element 400 squeezes the screen protector 500 against the top inner wall (upper inner wall) of the film inlet / outlet 132, thus preventing the screen protector 500 from shaking in the vertical direction. This eliminates the need for additional packaging such as foam pads, thereby saving production costs. It is also less prone to damage during transportation, ensuring a high yield rate during transportation.

[0060] like Figure 1 , Figure 6 , Figure 8As shown, in this embodiment, the elastic element 400 extends along the width direction and is disposed on the front side of the back plate 120. Specifically, a countersunk hole is provided in the inner cavity of the front side of the back plate 120, and the elastic element 400 is bonded in the countersunk hole, thereby facilitating the installation of the elastic element 400. Moreover, being disposed along the width direction allows the protective film layer 520 to be uniformly pushed at one end in the length direction during the rebound of the elastic element 400 to push the screen film 500, thereby ensuring that the left and right sides of the protective film layer 520 can be bonded simultaneously when bonded to the screen of the mobile phone 10, effectively preventing the generation of adhesive bubbles and resulting in a better film application effect.

[0061] Furthermore, in this embodiment, the elastic element 400 is a sponge strip. The sponge strip provides relatively soft elasticity and has a large compression thickness, resulting in better film application during the rebound process. The elastic element 400 can also be an EVA elastic strip (foam strip), a silicone strip (rubber strip), or an elastic plastic strip, which can also achieve the rebound effect; alternatively, it can be a combination of a spring and a push plate, etc.

[0062] Furthermore, in this embodiment, the back panel 120 is a solid plate with no perforated areas on its surface. Using a solid plate eliminates the need for a window design in the middle, thus preventing accidental pressing of the inner protective film layer 520 by the user. It is conceivable that decorative grooves or openings could also be made on the back panel 120; if the openings are small, they will not lead to accidental operation.

[0063] like Figure 1 , Figure 3 As shown, the terminal limiting member 300 in this embodiment further includes a support boss 310 and a side support post 320. The support boss 310 is disposed on the front surface of the housing 100, and the side support post 320 is disposed on the support boss 310 along the thickness direction. A limiting step 330 is formed between the inner side surface of the side support post 320 and the front surface of the support boss 310. The limiting steps 330 at different positions surround the inner cavity of the mobile phone 10, and the edge of the screen of the mobile phone 10 abuts against the limiting step 330. In the specific structure, the support boss 310 protrudes from the front of the back plate 120 at a certain height, so that the screen film 500 is located within the area surrounded by multiple support bosses 310. This area and the inner cavity surrounded by the limiting steps 330 together form the film-applying cavity 110. The side support column 320 extends a certain height along the thickness direction, and both the support boss 310 and the side support column 320 are set on the inner wall of the edge plate 130, thereby enhancing the structural strength of the terminal limiting member 300. The front edge of the screen of the mobile phone 10 abuts against the upper surface of the support boss 310, while the side of the mobile phone 10 abuts against the inner surface of the side support column 320, so that the mobile phone 10 can be stably limited in the film-applying cavity 110.

[0064] In addition, depending on the different opening requirements, the terminal limiting member 300 on some sides may only include the side support column 320, and the mobile phone 10 is limited by the inner surface of the side support column 320 against the side of the mobile phone 10.

[0065] like Figure 3 , Figure 4 As shown, further, the film limiting connection portion 200 in this embodiment includes a first limiting member 210 and a second limiting member 220 spaced apart along the width direction. The first limiting member 210 and the second limiting member 220 are different in size and / or shape. By spaced apart and making the first limiting member 210 and the second limiting member 220 different, a foolproof function can be provided to effectively prevent the screen film 500 from being installed backwards.

[0066] like Figure 3 , Figure 4 , Figure 7 As shown, in this embodiment, the first limiting member 210 and the second limiting member 220 are of different sizes. Both the first limiting member 210 and the second limiting member 220 include a connecting post 211 and a post head 212. The connecting post 211 is connected to the housing 100 and extends a predetermined distance along the thickness direction. The post head 212 is disposed at the end of the connecting post 211 away from the housing 100 and protrudes from the outer circular surface of the connecting post 211. Thus, the radial dimension of the top of the first limiting member 210 is larger than the radial dimension of the bottom. The connecting post 211 is used to connect to the limiting hole 533 of the positioning film layer 530 to limit the positioning film layer 530; the post head 212 is used to limit the positioning film layer 530 from disengaging from the connecting post 211. The connecting post 211 and the post head 212 form a hook structure. When the positioning film layer 530 is fitted with the limiting hole 533, the limiting hole 533 can be deformed by the pressure of the post head 212, thus fitting onto the connecting post 211 through the post head 212. Moreover, the connection can be set slightly larger in the width direction (the width direction is not limited by the first limiting member 210 and the second limiting member 220), making it easier to fit the positioning film layer 530 onto the first limiting member 210 and the second limiting member 220 through the limiting hole 533. The formed hook structure also prevents the positioning film layer 530 from easily detaching from the first limiting member 210 and the second limiting member 220, ensuring the connection stability during the film application process.

[0067] like Figure 3 , Figure 4 , Figure 7As shown, in this embodiment, the connecting post 211 forms a movable section 213 between the post head 212 and the surface of the housing 100. The positioning film layer 530 moves along the movable section 213 through the limiting hole 533. In the specific structure, the connecting post 211 is provided with a movable section 213, which facilitates the up and down movement of the positioning film layer 530. When the elastic element 400 rebounds and pushes the positioning film layer 530 and the protective film layer 520, so that the protective film layer 520 automatically adheres to the screen of the mobile phone 10, the positioning film layer 530 can move up and down automatically because its other end can move up on the movable section 213. This makes the positioning film layer 530 and the protective film layer 520 more responsive under the elastic force of the elastic element 400, and makes the pushing process of the positioning film layer 530 and the protective film layer 520 smoother.

[0068] Furthermore, in this embodiment, the distance of the movable segment 213 is 0.3mm-0.8mm. In a specific structure, the length of the movable segment 213 is usually 3-8 times the thickness of the positioning film layer 530. For example, if the thickness of the positioning film layer 530 is 0.1mm, then the distance of the movable segment 213 is 0.3mm-0.8mm.

[0069] like Figure 3 , Figure 4 , Figure 7 As shown, in this embodiment, the column head 212 is a hemispherical column head 212, with its top end aligned with the top end of the connecting column 211 to form an arc-shaped surface. The hemispherical column head 212 is a complete spherical head with half removed in the length direction, while the top end is retained, thus forming an arc-shaped surface with the top aligned. The arc-shaped surface is relatively smooth and guided by the hemispherical column head 212, facilitating the fitting of the connecting hole onto the connecting column 211 after compression. In addition, the width dimension of the entire hemispherical column head 212 is larger than its length dimension, so that the diameter of the connecting hole is set slightly larger in the width direction, while the diameter in the length direction matches the diameter of the connecting column 211. This ensures that while smoothly fitting onto the connecting column 211, it does not create an excessive gap in the length direction, effectively guaranteeing the limiting effect of the positioning film layer 530 in the length direction.

[0070] Example 2

[0071] like Figure 2 , Figure 3 , Figure 6 As shown, this embodiment proposes a screen protector kit, including a dust-free screen protector applicator as described in Embodiment 1, and a screen protector 500. Figure 5 , Figure 6 , Figure 7 , Figure 8As shown, the screen protector 500 includes a dust-collecting release film layer 510, a protective film layer 520, and a positioning film layer 530 stacked sequentially. The dust-collecting release film layer 510 includes a tear-off piece 511 and a release piece 512. The tear-off piece 511 is on the top layer, and one end of the tear-off piece 511 in the length direction is connected to the release piece. The protective film layer 520 covers the lower part of the release piece 512. An adhesive layer (AB glue layer 521) is provided on the protective film layer 520. The positioning film layer 530 covers the lower surface of the protective film layer 520. The positioning film layer 530 has a positioning body piece 531 and a protruding section 532. The protective film layer 520 is disposed on the positioning body piece 531. The protruding section 532 protrudes from the positioning body piece 531 in the length direction and has two connecting holes. The screen protector 500 is installed in the dust-free screen protector applicator and is fitted onto the first limiting member 210 and the second limiting member 220 through two connecting holes. The tear-off piece extends from the inlet / outlet 132 of the film to the outside. When the user pulls the tear-off piece outward, it causes the release piece at the other end to fold upward and in the direction of pulling, and separate from the protective film layer 520. The folded release piece sweeps across the screen above, thereby cleaning the screen of dust.

[0072] Example 3

[0073] This embodiment proposes a film application method for a dust-free film applicator as described in Embodiment 1. The film application method includes the following steps:

[0074] Step S100: Place the assembled screen film into the film application cavity and connect the positioning film layer of the screen film to the film limiting connection part;

[0075] Step S200: Place the mobile phone on the terminal limiting member so that the screen of the mobile phone is facing the protective film layer of the screen film.

[0076] Step S300: Pull the dust-absorbing release film layer of the screen film outward along the length direction. When the dust-absorbing release film layer separates from the protective film layer, it comes into contact with the screen of the mobile phone to absorb dust, while the elastic element is compressed by force.

[0077] Step S400: After the dust removal release film is completely removed, the elastic element rebounds and pushes the positioning film and the protective film, so that the protective film automatically adheres to the screen of the mobile phone.

[0078] In summary, the dust-free screen protector applicator, applicator kit, and applicator method proposed in this application achieve automatic adhesion between the protective film layer and the screen through the incorporation of elastic elements during the applicator process. This simplifies the applicator application process, requiring only a simple flip-top and pull-out motion to complete the application. The need for pressing the screen protector with the applicator eliminates the need for manual pressing, reducing user steps and the likelihood of errors. Furthermore, the film limiting connection uses a structure of connecting pillars and pillar heads, enabling the positioning of the film layer while incorporating a small movable segment. This allows for automatic micro-adjustment of the screen protector as it is pushed by the elastic elements, improving sensitivity. By matching the width of the film inlet and outlet with the width of the positioning film layer, and using the inner walls on both sides of the inlet and outlet to define the width, the protective film layer does not require a fixed size. This allows for the design of protective film layers of different lengths and widths to meet various needs, resulting in different types of protective films.

[0079] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A dust-free screen protector applicator for connecting a screen protector to a mobile terminal, wherein the screen protector has a dust-absorbing release film layer, a protective film layer, and a positioning film layer stacked sequentially, characterized in that, The dust-free film applicator includes: a housing, on which a plurality of terminal limiting members are disposed, the plurality of terminal limiting members being used to limit the mobile terminal, and the plurality of terminal limiting members forming a film applicator cavity; A diaphragm limiting connection part is disposed on the housing and located outside the film application cavity. The diaphragm limiting connection part is used to connect with the positioning film layer so that the protective film layer faces the screen of the mobile terminal. An elastic element is disposed on the housing and located on the side of the screen film opposite to the mobile terminal; The elastic element is compressed when the dust-collecting release film is pulled out of the film-applying cavity, and the protective film is adhered to the screen of the mobile terminal by the rebound force of the elastic element. The diaphragm limiting connection includes a first limiting member and a second limiting member spaced apart along the width direction. The first limiting member and the second limiting member are of different sizes. Both the first limiting member and the second limiting member include a connecting post and a post head. The connecting post is connected to the housing along the thickness direction. The post head is disposed at the end of the connecting post away from the housing and protrudes from the outer circular surface of the connecting post. The connecting post is used to connect to the limiting hole of the positioning film layer to limit the positioning film layer. The post head is used to limit the positioning film layer from dislodging from the connecting post. When the column head is fitted with the limiting hole on the positioning membrane layer, the limiting hole is deformed by the compression of the column head and passes through the column head, thus fitting onto the connecting column. The connecting post forms a movable section between the post head and the surface of the housing, and the positioning film layer moves along the movable section through the limiting hole; The column head is a hemispherical column head, which is a complete spherical head with half removed in the length direction, while the top is retained, so that the top of the hemispherical column head is connected to the top of the connecting column to form an arc-shaped surface. Guided by a hemispherical head, the limiting hole is compressed and fitted onto the connecting post. Furthermore, the width of the entire hemispherical head is larger than its length, thus making the diameter of the limiting hole larger in the width direction and matching the diameter of the connecting post in the length direction. This ensures that the hole can be smoothly fitted onto the connecting post without creating an excessive gap in the length direction, effectively guaranteeing the limiting effect of the positioning film layer in the length direction.

2. The dust-free film applicator according to claim 1, characterized in that, The first limiting member and the second limiting member are different in size and / or shape.

3. The dust-free film applicator according to claim 2, characterized in that, The first limiting member and the second limiting member are different in size.

4. The dust-free film applicator according to claim 3, characterized in that, The distance between the active segments is 0.3mm-0.8mm.

5. The dust-free film applicator according to claim 1, characterized in that, The housing has a membrane inlet and outlet, and the membrane inlet and outlet and the membrane limiting connection part are respectively located at both ends of the length direction of the housing. The membrane inlet and outlet are connected to the film application cavity, and the screen film enters the film application cavity through the membrane inlet and outlet. The two inner walls of the inlet and outlet of the diaphragm in the width direction respectively abut against and limit the two sides of the positioning membrane layer in the width direction; The elastic element is located inside the film-applying cavity and on the side near the film inlet and outlet. When the dust-collecting release film layer pulls the elastic element out from the film inlet and outlet, the elastic element is compressed by force.

6. The dust-free film applicator according to claim 5, characterized in that, The housing includes: a back plate, and the diaphragm limiting connection portion is disposed on the front side of the back plate; A side plate is provided around the front of the back plate, and the side plate facing the end of the diaphragm limiting connection portion is spaced apart to form a side opening. The positioning membrane layer has a protruding section, which protrudes from the side opening and sleeves the diaphragm limiting connection portion. The diaphragm inlet and outlet are provided on the side plate opposite to the side opening. Under the elastic force of the elastic element, the dust-collecting release film layer abuts against the top inner wall of the diaphragm inlet and outlet. The elastic element extends along the width direction and is disposed on the front side of the back plate; The elastic element is a sponge strip, silicone strip, or elastic plastic strip.

7. The dust-free film applicator according to claim 6, characterized in that, The back panel is a solid plate with no perforated areas on its surface.

8. The dust-free film applicator according to any one of claims 1-7, characterized in that, The terminal limiting member is disposed on the housing along the length and width directions; The terminal limiting component includes a support boss, which is disposed on the front surface of the housing; A side support column is provided on the support boss along the thickness direction. A limiting step is formed between the inner side of the side support column and the front surface of the support boss. The screen edge of the mobile terminal abuts against the limiting step.

9. A screen protector kit, characterized in that, Includes the dust-free screen protector as described in any one of claims 1-8, and the screen protector; The screen film includes a dust-absorbing release film layer, a protective film layer, and a positioning film layer stacked in sequence; The dust-collecting release film layer includes: a tear-off piece and a release piece; The screen protector is placed in the dust-free screen protector applicator and is used to apply the screen protector to the mobile terminal.

10. A method for applying a film, characterized in that, For a dust-free film applicator as described in any one of claims 1-8, the film application method includes the steps of: The assembled screen protector is placed into the film application cavity, and the positioning film layer of the screen protector is connected to the film limiting connection part; The mobile terminal is placed on the terminal limiting member so that the screen of the mobile terminal is facing the protective film layer of the screen film. Pull the dust-absorbing release film layer of the screen film outward along the length direction. When the dust-absorbing release film layer separates from the protective film layer, it comes into contact with the screen of the mobile terminal to absorb dust, while the elastic element is compressed by force. Once the dust-collecting release film is completely removed, the elastic element rebounds and pushes the positioning film and the protective film, causing the protective film to automatically adhere to the screen of the mobile terminal.

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