A film pasting device for an electronic device screen and a film pasting kit

Abstract

The application provides a film pasting device and a film pasting kit for an electronic device screen, comprising: a shell, in which a film limiting cavity and a device positioning cavity are arranged; a spring pressing part arranged at a first end of the length direction of the film limiting cavity and exerting a spring force; a film inserting port arranged on the outer wall of the first end of the shell and communicating with the film limiting cavity, and limited by the first upper limiting inner wall and the spring pressing part respectively abutting against two surfaces of the protective film; a positioning port arranged on the outer wall of the second end of the shell and communicating with the film limiting cavity, and limited by the second upper limiting inner wall and the bottom surface of the film limiting cavity respectively abutting against two surfaces of the protective film; and the second end of the shell is provided with a clamping part for matching with the clamping port on the tension strip to limit the protective film in the length direction. The problem that the film pasting device in the prior art cannot limit the protective film preinstalled therein, resulting in the problem that the protective film is prone to dislocation before pasting the film is solved.

Description

Technical Field

[0001] This application relates to the field of screen protector application technology, and more specifically, to a screen protector applicator and application kit for electronic devices. Background Technology

[0002] To protect the screens of mobile devices such as phones and tablets, users typically apply a screen protector to the flat surface of the device (the one to be covered) to prevent scratches. During the application process, to achieve smooth lines and avoid air bubbles, thus maintaining the aesthetic appearance of the electronic device, a screen protector applicator is usually used to assist the user in precise positioning and application, thereby improving the application effect.

[0003] Currently available screen protector applicators typically require the protective film to be installed into the applicator for positioning before application, resulting in a cumbersome and costly process. While pre-installed protective film allows for immediate use after opening the packaging, the lack of a pre-positioning mechanism on the applicator makes it prone to detaching during transport (before application).

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] The purpose of this application is to provide a screen protector applicator and screen protector kit for electronic devices, which solves the problem in the prior art that the screen protector applicator cannot limit the position of the pre-installed protective film, causing it to easily fall off before application.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: On one hand, this application provides a screen protector applicator for electronic devices, used to apply protective films to the screens of electronic devices, wherein the applicator includes: The housing has a diaphragm limiting cavity and an equipment positioning cavity inside. The equipment positioning cavity is located above the diaphragm limiting cavity. The diaphragm limiting cavity is used to accommodate the protective diaphragm, and the equipment positioning cavity is used to accommodate the electronic equipment. The spring-loaded part is disposed at the first end of the diaphragm limiting cavity along its length and applies elastic force toward the device positioning cavity; The insertion port is located on the outer wall of the first end of the housing and communicates with the diaphragm limiting cavity. The insertion port has a first upper limit inner wall. The insertion port is used to insert the protective film and is limited by the first upper limit inner wall and the elastic part respectively abutting against the two surfaces of the protective film. The positioning port is located on the outer wall of the second end of the housing and communicates with the diaphragm limiting cavity. The positioning port has a second upper limit inner wall. The positioning port is used to insert the pull strip of the protective film and is limited by the second upper limit inner wall and the bottom surface of the diaphragm limiting cavity against the two surfaces of the protective film respectively. The second end of the housing is provided with a locking part, which is used to mate with the locking slot on the pull strip to limit the protective film in the length direction.

[0007] Optionally, the locking part includes side locking blocks, which protrude from both sides of the positioning opening in the width direction. The locking part is used to mate with the locking slots on both sides of the pull strip to limit the protective film in the length direction.

[0008] Optionally, the side block has a first inclined surface and a second inclined surface, with a tapered angle formed between the first inclined surface and the second inclined surface; The latches on both sides of the pull bar are V-shaped openings, and the pull bar is inserted into the positioning opening so that the V-shaped openings are locked onto the conical corner.

[0009] Optionally, the locking part includes a bottom hook, and the latch of the pull bar is a perforation opened on the surface; The bottom hook protrudes from the bottom surface of the housing and is used to mate with the perforation on the pull strip to limit the protective film in the length direction.

[0010] Optionally, a film-pulling opening is provided on the outer wall of the second end of the shell. The film-pulling opening is located above the positioning opening and is connected to the positioning opening. The film-pulling opening is used to pass through when the protective film's release layer is peeled off. The left and right sides of the connection between the positioning port and the film pulling port protrude to form a locking block, and the side of the locking block facing the positioning port forms a second upper limit inner wall.

[0011] Optionally, the pull strip has a first pull-out section and a second pull-out section, the connecting end of the second pull-out section is connected to the first end of the tear-off release layer, the first pull-out section is connected to the end of the second pull-out section away from the connecting end, and the width of the first pull-out section is greater than the width of the second pull-out section; During the pulling process, the first pull-out section is inserted into the positioning hole to limit the protective film, and the second pull-out section comes out from the positioning hole into the film pulling hole to pull the release layer out from the film pulling hole.

[0012] Optionally, the housing includes a bottom plate and an outer baffle plate arranged circumferentially, the outer baffle plate being located above the bottom plate, and a membrane insertion port being provided on the outer baffle plate at the first end of the housing; A pull bar connection end stop is provided on the inner upper wall of the insertion port, and the first upper limit inner wall is located on the pull bar connection end stop.

[0013] Optionally, the spring-loaded part includes: a support ramp, which is disposed on the bottom surface of the diaphragm limiting cavity; The pressure strip is located at the end of the support inclined plate facing the equipment positioning cavity.

[0014] On the other hand, this application also proposes a screen protector kit, including a screen protector applicator for electronic devices as described above and a protective film; The protective film includes: an adhesive layer and a peel-off release layer, wherein a pull strip is provided on the side of the peel-off release layer opposite to the adhesive layer; The protective film is housed in the film limiting cavity of the screen protector of the electronic device screen. The release layer is peeled off by pulling the strip to detach the protective film and expose the film layer.

[0015] The beneficial effects of the screen protector and screen protector kit provided in this application are at least as follows: The protective film can be inserted into the film limiting cavity through the insertion port at the first end of the housing. At the first end along the length direction, a clamping position is formed by the spring-loaded part cooperating with the first upper limit inner wall, so that the first upper limit inner wall and the spring-loaded part abut against the upper and lower surfaces of the protective film respectively for clamping and limiting. At the second end along the length direction, a clamping position is formed by the second upper limit inner wall on the positioning port cooperating with the bottom surface of the film limiting cavity, so that the second upper limit inner wall abuts against the protective film's pull strip, and the bottom surface of the film limiting cavity abuts against the lower surface of the protective film's film layer for clamping and limiting. The clamping positions at the first and second ends cooperate to limit the protective film in the vertical direction. Then, the locking part on the second end matches the locking slot on the pull strip to limit the protective film in the length direction, thereby fixing the protective film. In this way, the protective film is directly pre-loaded onto the applicator for packaging. During transportation and before use, the protective film is kept in a fixed state in the applicator. After the user unpacks the applicator, they can directly apply the film without having to install the protective film into the applicator. Therefore, the application steps are reduced, making it more convenient for users and enhancing the user experience. At the same time, it can reduce the packaging of protective film in production, saving costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 An exploded view of a film application kit provided in an embodiment of this application during film application; Figure 2 for Figure 1 Enlarged view of point A; Figure 3 This is a schematic diagram of the structure of a screen protector for an electronic device provided in an embodiment of this application; Figure 4 A cross-sectional view of a screen protector for an electronic device provided in an embodiment of this application; Figure 5 A cross-sectional view of a screen protector applicator for an electronic device provided in this application embodiment when a protective film is preset; Figure 6 This is a cross-sectional view from another perspective when a screen protector is preset with a screen protector provided in an embodiment of this application.

[0018] Figure 7 This is a schematic diagram illustrating the structural principle of the side clip and pull strip of a screen protector for an electronic device provided in this application embodiment.

[0019] The following are the labeling elements in the figure: 10. Mobile phone; 100. Housing; 110. Base plate; 120. Outer edge; 121. Outer baffle; 122. Pull strip connection end stop; 123. First upper limit inner wall; 130. Diaphragm limiting cavity; 131. Diaphragm positioning block; 132. Equipment bearing surface; 133. Membrane insertion guide slope; 140. Equipment positioning cavity; 150. Edge portion; 160. Membrane pulling opening; 161. Positioning opening; 162. Second upper limit inner wall; 163. Card 164. Position stop block; 170. Communicating gap; 171. Side locking block; 172. First inclined surface; 173. Second inclined surface; 180. Insertion port; 200. Spring-loaded part; 210. Supporting inclined plate; 220. Pressure strip; 20. Protective film; 21. Tear-off release layer; 22. Pull strip; 22a. V-shaped opening; 22b. Protruding area; 22c. Guide inclined surface; 23. Connecting protrusion; 24. Film layer; 25. First pull-out section; 26. Second pull-out section. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0021] It should be noted that in annotations, leader lines with arrows represent non-solid areas such as holes and slots, or non-specific solid features such as higher-level features, or specific directions. Leader lines without arrows represent solid features or specific lower-level features.

[0022] When a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings and are for ease of description only, and should not be construed as limiting the scope of the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0023] like Figure 1 , Figure 5 As shown, this embodiment proposes a screen protector kit, including a screen protector applicator for electronic devices and a protective film 20. The screen protector applicator is used to place the protective film 20, limiting its position within the applicator. The electronic device to be protected is then positioned on the applicator to apply the protective film 20. The electronic device in this embodiment can be various electronic products, such as a mobile phone 10, a tablet computer, an e-reader, a car screen, a smartwatch, etc. For ease of structural description, a mobile phone 10 is used as an example. The long side of the mobile phone 10 is the length direction (front-to-back direction), the short side is the width direction (left-to-right direction), and the thickness direction is the vertical direction. The length direction, width direction, and vertical direction mentioned below are all based on this. The two ends of the length direction are the first end and the second end, respectively. In this embodiment, the first end is taken as the front end and the second end as the rear end for structural description.

[0024] like Figure 1As shown, the protective film 20 of this embodiment includes an adhesive layer 24 and a peel-off release layer 21. A pull strip 22 is provided on the side of the peel-off release layer 21 opposite to the adhesive layer 24. One end (connecting end) of the pull strip 22 in its longitudinal direction is connected to the first end (front end) of the peel-off release layer, forming a connecting protrusion 23 at that end. The other end of the pull strip in its longitudinal direction extends toward the second end (rear end) of the peel-off release layer 21 and protrudes beyond the second end of the peel-off release layer 21. The rear end of the outwardly extending pull strip facilitates the user's grip for tearing. The peel-off release layer 21 is attached to one side of the adhesive layer (AB glue) of the adhesive layer 24, thereby protecting the adhesive layer 24. In use, the peel-off release layer 21 and the adhesive layer 24 are pre-positioned on the film applicator, with the peel-off release layer 21 facing upwards. The mobile phone 10 to be applied is then placed on top, with the screen of the mobile phone 10 facing downwards towards the peel-off release layer 21. Then, by pulling the pull strip 22, the release layer 21 is gradually pulled away from the film layer 24 from the front end, so that the protective film 20 is exposed after being separated from the release layer 21, thus exposing the film layer 24. In this way, the film layer 24 is located below the screen of the phone 10 and aligned with the screen. The elasticity of the applicator adheres the film layer 24 to the screen of the phone 10, thus protecting the screen. During use, the release layer 21 needs to be pulled away from the film layer 24, only adhering the film layer 24 to the screen surface of the phone 10.

[0025] In some embodiments, such as Figure 1 , Figure 5 As shown, this embodiment proposes a screen protector applicator for electronic devices, used to apply a protective film 20 to the screen of a mobile phone 10. The screen protector applicator mainly includes: a housing 100, a spring-loaded part 200, an insertion slot 180, and a positioning slot 161. For example... Figure 1 , Figure 3 , Figure 5 As shown, the housing 100 includes a bottom plate 110 at the lower part and an outer flange 120 surrounding the bottom plate 110 in the circumferential direction. The space enclosed by the outer flange 120 and the bottom plate 110 has an upward opening. A diaphragm limiting cavity 130 and a device positioning cavity 140 are formed within the space enclosed by the housing 100. The device positioning cavity 140 is located above the diaphragm limiting cavity 130. The diaphragm limiting cavity 130 is used to accommodate the protective film 20, and the device positioning cavity 140 is used to accommodate the mobile phone 10. The protective film 20 is placed in the diaphragm limiting cavity 130 for limiting, and the mobile phone 10 is placed in the device positioning cavity 140 for positioning, so that the mobile phone 10 is aligned with the protective film 20 below, ensuring the accuracy of the film application position. The spring-loaded part 200 is fixed to the base plate 110 and located at the front end of the diaphragm limiting cavity 130. The spring-loaded part 200 is elastic. Under the elastic force of the spring-loaded part 200, the front end of the protective film 20 in the diaphragm limiting cavity 130 is pressed upward and pressed against the front end of the screen of the mobile phone 10 above. Figure 3 , Figure 4 , Figure 5 As shown, a diaphragm insertion port 180 is provided on the outer wall of the front end of the housing 100, and the diaphragm insertion port 180 is connected to the diaphragm limiting cavity 130. The diaphragm insertion port 180 is located at the lower part of the outer edge 120 at the front end. Through the diaphragm insertion port 180, the protective film 20 can be inserted into the diaphragm limiting cavity 130 of the housing 100 from the front side. And because the outer edge 120 at the front end blocks the upper side of the diaphragm insertion port 180, the inner wall surface of the diaphragm insertion port 180 forms a first upper limit inner wall 123. The protective film 20 inserted into the diaphragm limiting cavity 130 is limited by the first upper limit inner wall 123 and the spring pressing part 200 abutting against the upper and lower surfaces of the protective film 20, respectively, which is equivalent to clamping the protective film 20 in the vertical direction at the front end of the protective film 20.

[0026] like Figure 3 , Figure 5 As shown, a retaining edge 150 is also provided at the second end (rear end) of the housing 100. The housing 100, the spring-loaded part 200, and the retaining edge 150 are all integrally injection molded. Figure 4 , Figure 5 , Figure 6 As shown, the baffle portion 150 can be an outer baffle 120 structure located at the rear end of the housing 100. The baffle portion 150 is disposed at the rear end of the diaphragm limiting cavity 130 to block and limit the protective film 20 located in the diaphragm limiting cavity 130. Figure 4 , Figure 5 As shown, a positioning port 161 is provided on the outer edge 120 at the rear end of the housing 100. The positioning port 161 is located at and communicates with the rear end of the diaphragm limiting cavity 130. The lower inner wall of the positioning port 161 is the lower inner wall of the diaphragm limiting cavity 130, and the upper part of the positioning port 161 has a second upper limit inner wall 162. When the protective film 20 is pre-installed in the diaphragm limiting cavity 130, the rear end of the protective film 20 is blocked and limited by the edge portion 150, and at the same time, the pull strip 22 can pass through the positioning port 161. The vertical width of the positioning port 161 is approximately equal to or slightly larger than the thickness of the protective film 20 covering the position of the pull strip 22. In this way, the second upper limit inner wall 162 abuts against the pull strip 22 of the protective film 20, and the bottom surface of the diaphragm limiting cavity 130 abuts against the lower surface of the film layer 24 of the protective film 20, which is equivalent to clamping the rear end of the protective film 20. In this way, the protective film 20 is clamped and limited at both the front and rear ends, making it difficult to move in the vertical direction. Figure 4 , Figure 5 As shown, a locking part (such as a side locking block 170 or a hook) is provided at the second end of the housing 100. When the pull bar 22 passes through the positioning port 161, as... Figure 1 , Figure 5 , Figure 6As shown, the locking part is used to mate with the locking slot (e.g., V-shaped opening 22a) on the pull strip 22 to limit the protective film 20 in the length direction so that the protective film 20 cannot move in the left and right directions.

[0027] The protective film 20 can be inserted into the diaphragm limiting cavity 130 through the insertion port 180 at the first end of the housing 100. At the first end along the length direction, a clamping position is formed by the spring-loaded part 200 engaging with the first upper limit inner wall 123, causing the first upper limit inner wall 123 and the spring-loaded part 200 to abut against the upper and lower surfaces of the protective film 20, respectively, for clamping and limiting. At the second end along the length direction, a clamping position is formed by the second upper limit inner wall 162 on the positioning port 161 engaging with the bottom surface of the diaphragm limiting cavity 130, causing the second upper limit inner wall 162 to abut against the pull strip 22 of the protective film 20, and the bottom surface of the diaphragm limiting cavity 130 to abut against the lower surface of the film layer 24 of the protective film 20, for clamping and limiting. The clamping positions at the first and second ends cooperate to limit the protective film 20 in the vertical direction. Then, the locking part on the second end matches the locking slot on the pull strip 22 to limit the protective film 20 in the length direction, thereby fixing the protective film 20. In this way, the protective film 20 is directly pre-installed on the applicator for packaging. During transportation and before use, the protective film 20 is in a fixed state in the applicator. After the user opens the applicator packaging, they can directly apply the film without having to install the protective film 20 into the applicator. Therefore, the application steps are reduced, making it more convenient for users and enhancing the user experience. At the same time, the packaging of the protective film 20 can be reduced in production, saving costs.

[0028] The locking part can adopt various structures, as detailed below: like Figure 2 , Figure 4 , Figure 6 , Figure 7 As shown, in the first structure, the locking part specifically includes side locking blocks 170. The side locking blocks 170 protrude from both sides of the positioning opening 161 in the width direction, with the left and right side locking blocks 170 protruding towards the center of the positioning opening 161. Correspondingly, locking slots are respectively opened on the left and right sides of the pull strip 22. The locking part is used to mate with the locking slots on both sides of the pull strip 22. The inner walls of the locking slots on the front and rear sides abut against the outer walls of the front and rear sides of the locking part to limit the protective film 20 in the length direction.

[0029] like Figure 2 , Figure 4 , Figure 6 , Figure 7As shown, the side latch 170 further comprises a first inclined surface 171 and a second inclined surface 172, forming a conical angle between the first inclined surface 171 and the second inclined surface 172, with the tip of the conical angle facing inward in the left-right direction. The latches on both sides of the pull bar 22 are V-shaped openings 22a, located on the outer side in the left-right direction. The pull bar 22 passes through the positioning opening 161 so that the V-shaped opening 22a is latched onto the conical angle. For example, the conical angle can be approximately 90°, then the angle A1 between the first inclined surface 171 and the perpendicular bisector of the housing 100 in the front-rear direction is approximately 45°, and the angle A2 between the second inclined surface 172 and the perpendicular bisector of the housing 100 is also approximately 45°. Correspondingly, the angle between the two side walls of the V-shaped opening 22a is approximately 90°. Thus, when the latch is latched onto the side latch 170, the first inclined surface 171 and the second inclined surface 172 provide limiting on the front and rear sides, respectively.

[0030] like Figure 7 As shown, in some other embodiments, the inclination of the first inclined surface 171 can be set to be smaller, while the inclination of the second inclined surface 172 can be set to be larger. Therefore, the corresponding included angle A1 is smaller than the included angle A2, for example, A1 is about 20° and A2 is about 70°. The smaller inclination of the first inclined surface 171 results in a smoother slope. When the pull bar 22 is inserted, the rear end of the pull bar 22 first contacts the first inclined surface 171 and gradually slides to the side locking block 170 along the guide of the first inclined surface 171. The smooth sliding process is more conducive to the deformation of the rear end of the pull bar 22. The second inclined surface 172 has a large inclination, even perpendicular to the vertical line of the front-rear direction of the housing 100. When the latch is engaged with the side latch 170, the second inclined surface 172 abuts against the rear inner wall of the latch, preventing the pull strip 22 from moving forward. Combined with the film layer 24 below the protective film 20 being blocked from the rear by the edge 150, both the forward and backward movement of the protective film 20 are stably limited, making the protective film 20 more stable in the applicator. During the application process, pulling out the pull strip 22 is a backward pulling process. At this time, the relatively smooth first inclined surface 171 has less obstructive effect on the front inner wall of the latch, allowing the front inner wall of the latch to be pulled backward along with the pull strip 22. This makes the process of the pull strip 22 disengaging from the side latch 170 smoother, making the application process more convenient.

[0031] like Figure 2 , Figure 5 , Figure 6As shown, in some embodiments, to facilitate the pull bar 22 passing through the positioning opening 161 with side latches 170, protruding areas 22b are provided on the left and right sides of the pull bar 22. The outermost width of the protruding areas 22b at both ends is slightly larger than the distance between the side latches 170 on the left and right sides. The latch is formed on the protruding areas 22b. The width of the area of ​​the pull bar 22 outside the protruding areas 22b is less than or equal to the distance between the side latches 170 on the left and right sides. In this way, when the pull bar 22 passes through the positioning opening 161, it first enters the positioning opening 161 without deformation, and then is deformed by the pressure of the first inclined surface 171 on the edge of the protruding area 22b, so that the latch can be smoothly engaged with the side latches 170. To facilitate the fit between the edge of the protruding area 22b and the first inclined surface 171, guide inclined surfaces 22c are provided on both the front and rear sides of the protruding area 22b. In this way, the fit between the guide inclined surfaces 22c and the first inclined surface 171 makes it easier for the protruding area 22b to be deformed under pressure and smoothly guides the bayonet to move and lock onto the side block 170.

[0032] In the second structure (not shown in the diagram), the locking part includes a bottom hook that protrudes from the bottom surface of the housing 100. The locking opening of the pull bar 22 is a through hole formed on the surface of the pull bar 22. The bottom hook is used to mate with the through hole on the pull bar 22 to limit the protective film 20 in the length direction. In a specific structure, a hook can be provided on the bottom surface of the diaphragm limiting cavity 130, with the hook facing upwards to hook onto the through hole on the pull bar 22. This also achieves the limiting function.

[0033] like Figure 3 , Figure 4 , Figure 5 As shown, in some embodiments, a film-pulling opening 160 is provided on the outer wall of the second end of the housing 100. The film-pulling opening 160 is located above the positioning opening 161 and communicates with the positioning opening 161. The film-pulling opening 160 is used to pass through when the release layer 21 of the protective film 20 is peeled off. The left and right sides of the connection between the positioning port 161 and the film pulling port 160 protrude to form a locking block 163. The locking blocks 163 on the left and right sides form a connecting gap 164. The film pulling port 160 and the positioning port 161 on the upper and lower sides are connected through the connecting gap 164. The left and right width of the positioning port 161 matches the width of the pull strip 22. The maximum width of the film pulling port 160 matches the width of the tear-off release layer 21. The width of the connecting gap 164 is less than the width of the positioning port 161, so that the side of the locking block 163 facing the positioning port 161 forms a second upper limit inner wall 162 to clamp the pull strip 22 that passes through the positioning port 161 below.

[0034] like Figure 1 , Figure 4 , Figure 5As shown, the pull strip 22 has a first pull-out section 25 and a second pull-out section 26. The connecting end of the second pull-out section 26 is connected to the first end of the tear-off release layer 21, and the first pull-out section 25 is connected to the end of the second pull-out section 26 away from the connecting end. The width of the first pull-out section 25 is greater than the width of the second pull-out section 26. During the pulling process of the pull strip 22, the first pull-out section 25 passes through the positioning hole 161 to limit the protective film 20, and the second pull-out section 26 exits from the positioning hole 161 into the film-pulling hole 160 to pull the tear-off release layer 21 out from the film-pulling hole 160. The pull strip 22 has different widths in the front and rear directions. The width of the first pull-out section 25 at the rear end of the pull strip 22 is set to be larger. This allows the second upper limit inner wall 162 to press down on the pull strip 22 when the first pull-out section 25 enters the positioning port 161. Furthermore, the side locking blocks 170 on both sides can lock onto the locking slots of the first pull-out section 25, thus securing the protective film 20. During pull-out, the first pull-out section 25 is pulled out of the positioning port 161 first. When the second pull-out section 26 reaches the positioning port 161, the narrower second pull-out section 26 disengages from the connecting gap 164 above the positioning port 161 and moves upward into the film-pulling port 160. Continuing to pull the pull strip 22 allows the first end of the pull strip 22 to smoothly pull the detached release layer 21 out of the film-pulling port 160. Therefore, during the pulling process of the pull strip 22, the use of a changing track method can not only achieve stable positioning of the pre-installed protective film 20, but also achieve stable pulling out of the release layer 21.

[0035] like Figure 1 , Figure 4 , Figure 5As shown, during the process of the pull strip 22 driving the release layer 21 to pass through the film-pulling opening 160, the front end of the pull strip 22 pulls the front end of the release layer 21, which allows the release layer 21 to detach from the film layer 24 starting from the front end. The detached release layer 21 is gradually pulled out from the film-pulling opening 160. Since the release layer 21 of the protective film 20 is gradually peeled off from the film layer 24 in a front-to-back direction, when the rear end of the release layer 21 is pulled, the film layer 24 is still located in the film limiting cavity 130 and is blocked by the rear end guarding portion 150, so that the release layer 21 can be easily detached and the film layer 24 is still limited in the film limiting cavity 130. By blocking the protective film 20 located in the diaphragm limiting cavity 130 by the edge portion 150, the peelable release layer 21, after being pulled, gradually detaches from the film layer 24 of the protective film 20 in the direction from the first end to the second end. Since the elastic part 200 always squeezes the protective film 20 towards the mobile phone 10, the peelable release layer 21 is pulled back by the pull strip 22 and detaches from the film layer 24. The peelable release layer 21 detaches from the film layer and flips upward. Due to the pressure applied by the elastic part 200, the film layer 24 is pushed upward, so that the flipped peelable release layer 21 is pressed against the screen surface of the mobile phone 10. Therefore, the peelable release layer 21 after flipping upward is in an attached pulling state with the screen surface during the pulling process. Under the upward pressure, it sticks to the screen more tightly, which makes it easier to stick the dust off the screen of the mobile phone 10 and achieve a better screen dust removal effect. As the release layer 21 is peeled off from the release film layer, the elastic part 200 presses the first end of the film layer 24 toward the mobile phone 10, so that the film layer 24 is gradually attached to the mobile phone 10 in the direction from the first end to the second end.

[0036] Furthermore, the release layer 21 gradually detaches from the film layer 24 of the protective film 20 along the direction from the first end (front end) to the second end (rear end). Simultaneously, the exposed film layer 24, under the elastic action of the spring-loaded part 200, is squeezed towards the mobile phone 10, causing the first end of the film layer 24 to be exposed and first adhered to the screen of the mobile phone 10. During the process of detaching the release layer 21, the film layer 24 gradually protrudes along the direction from the first end to the second end. Under the adhesion of the adhesive layer (AB glue), the film layer 24 automatically releases air and gradually adheres to the screen of the mobile phone 10 along the direction from the first end to the second end. Therefore, the corresponding film layer 24 is stably positioned during the film application process under the action of the film limiting cavity 130 and the edge blocking part 150, eliminating the need for a positioning release layer for hooking and fixing. This reduces the protective film 20 from three layers to two layers, thereby saving on the production cost of the protective film 20. Furthermore, no hooking or positioning is required during operation, and the elasticity enables automatic air release and film application, eliminating the need for secondary manual pressing of the applied film layer 24. This simplifies the application process, reduces the risk of poor application due to misoperation, makes it more convenient for users, and increases the success rate of film application.

[0037] like Figure 3 , Figure 4 As shown, the spring-loaded part 200 of this embodiment further includes a supporting inclined plate 210 and a pressure strip 220. The supporting inclined plate 210 and the pressure strip 220 are integrally formed. The lower end of the supporting inclined plate 210 is fixed to the front end of the bottom surface of the diaphragm limiting cavity 130. The bottom surface of the diaphragm limiting cavity 130 can also be the surface of the base plate 110. The supporting inclined plate 210 extends gradually at an incline towards the rear end in a direction from bottom to top. The pressure strip 220 is fixed at the upper end of the supporting inclined plate 210 and extends a predetermined width in a left-right direction. By setting the inclined supporting inclined plate 210, the pressure strip 220 is suspended in the air, thereby generating elasticity. By applying pressure to the protective film 20 through the pressure strip 220 extending in the left-right direction, the front end of the protective film 20 is pressed against the screen of the mobile phone 10. In this embodiment, the pressure strip 220 has an arc-shaped extrusion surface. When extruding through the arc-shaped extrusion surface, the extrusion range becomes a line (extending in the left and right direction), thereby reducing the contact area. During extrusion, since the release layer 21 needs to be pulled out, a smaller extrusion surface is used, which makes it easier for the release layer 21 to push the pressure strip 220 apart when pulled out. This makes it easier for the flipped-up release layer 21 to pass through the area between the pressure strip 220 and the screen of the mobile phone 10, making it convenient for the user to pull the release layer 21 away from the film layer 24.

[0038] like Figure 3 , Figure 4 , Figure 5 As shown, in this embodiment, diaphragm positioning blocks 131 are provided on the inner walls of the left and right sides of the outer edge 120, protruding towards the center. The diaphragm positioning blocks 131 and the edge portion 150 form a diaphragm limiting cavity 130. The diaphragm positioning blocks 131 are located on the lower inner side of the outer edge 120. The inner sides of the diaphragm positioning blocks 131 on the left and right sides limit the left and right sides of the protective film 20, and the edge portion 150 at the rear stops the rear end of the protective film 20, thereby limiting the protective film 20. The surface of the diaphragm positioning blocks 131 facing away from the bottom plate 110 is the device bearing surface 132. The device bearing surface 132 and the inner wall of the outer edge 120 form a device positioning cavity 140. The upper inner wall of the outer edge 120 can limit the mobile phone 10. The edge of the screen of the mobile phone 10 abuts against the lower device bearing surface 132 for vertical positioning, so that the mobile phone 10 is placed in the device positioning cavity 140 for positioning.

[0039] like Figure 3 , Figure 4As shown, membrane guide ramps 133 are provided on the membrane positioning blocks 131 (the left and right sides of the membrane positioning blocks 131 at the front end of the membrane limiting cavity 130) facing the membrane insertion port 180. The left and right membrane guide ramps 133 form conical openings. The side of the conical opening facing backward is narrow and the side facing forward is wide. The left and right distance of the narrow opening is smaller than the left and right distance of the wide opening. Therefore, by facing the wide end of the conical opening toward the membrane insertion port 180, the protective membrane 20 inserted into the membrane insertion port 180 can be guided, making the installation and positioning of the protective membrane 20 more convenient.

[0040] like Figure 3 , Figure 4 As shown, in this embodiment, an outer baffle 121 is formed around the outer side of the first end of the device positioning cavity 140. The outer baffle 121 is located at the front end of the outer edge 120 and extends for a certain length. The outer baffle 121 is located above the bottom plate 110, and a membrane insertion port 180 is formed between the outer baffle 121 and the bottom plate 110. The forward-extending outer baffle 121 protrudes forward from the bottom plate 110. The outer baffle 121 can be used to reinforce the outer edge 120 after the membrane insertion port 180 is opened, increasing the structural strength of the front end of the entire housing 100 and preventing the short vertical distance of the outer edge 120 at the front end from causing easy breakage.

[0041] like Figure 3 , Figure 4 , Figure 5 As shown, a pull bar connecting end stop 122 is provided on the surface of the outer baffle 121 facing the bottom plate 110. The pull bar connecting end stop 122 is concave upwards, thereby creating a clearance on the upper side of the insertion port 180. The pull bar 22 is bonded to the front end of the tear-off release layer 21 to form a connecting protrusion 23. When the protective film 20 is inserted into the film limiting cavity 130, the connecting protrusion 23 is located below the outer baffle 121. The pull bar connecting end stop 122 allows the outer baffle 121 to avoid the connecting protrusion 23 of the pull bar 22, so that the connecting protrusion 23 will not be excessively squeezed when it is located in the pull bar connecting end stop 122. For example, if the pull bar connecting end stop 122 is not provided, the outer baffle 121 will exert too much downward pressure on the front end (connecting protrusion 23) of the protective film 20 inserted into the film limiting cavity 130, and the protective film 20 will be easily broken and damaged, increasing the risk of it detaching from the film limiting cavity 130.

[0042] In some embodiments, this embodiment also provides a film application method, wherein the film applicator is applied to the screen of the electronic device as described above, and the film application method includes the following steps: Step S100: Position the mobile device in the device positioning cavity of the screen protector applicator for positioning, so that the protective film is pressed onto the screen of the mobile terminal by the spring-loaded part, wherein the protective film is pre-positioned in the film limiting cavity of the screen protector applicator.

[0043] In practice, the protective film can be directly installed into the applicator at the factory. At the first end along the length, a spring-loaded part engages with the inner wall of the first upper limit stop to form a clamping position, allowing the inner wall of the first upper limit stop and the spring-loaded part to abut against the upper and lower surfaces of the protective film, respectively, for clamping and limiting. At the second end along the length, a second upper limit stop inner wall on the positioning port engages with the bottom surface of the film limiting cavity to form a clamping position, allowing the second upper limit stop inner wall to abut against the protective film's pull strip, and the bottom surface of the film limiting cavity to abut against the lower surface of the protective film's adhesive layer, for clamping and limiting. A locking part on the second end engages with a locking slot on the pull strip to limit the protective film along its length, thereby fixing the protective film in place.

[0044] Step S200: Pull the release liner of the protective film to gradually detach the release liner from the protective film layer in the direction from the first end to the second end. At the same time, the spring-loaded part presses the first end of the film layer towards the electronic device so that the film layer is gradually attached to the screen of the electronic device in the direction from the first end to the second end under the adhesion of the adhesive layer.

[0045] In the specific process, the pull strip of the protective film's release layer is pulled, and the edge part blocks the protective film located in the film limiting cavity, so that the release layer gradually separates from the protective film's film layer in the direction from the first end to the second end. At the same time, the spring part presses the first end of the film layer towards the mobile phone, so that the film layer is gradually attached to the mobile phone screen in the direction from the first end to the second end under the adhesion of the adhesive layer.

[0046] Moreover, during the pulling process, the pull bar first moves within the positioning port, causing the pull bar's latch to disengage from the locking part. Then, the pull bar disengages from the positioning port and enters the film pulling port, allowing the tear-off release layer to smoothly detach from the film pulling port.

[0047] In summary, the screen protector applicator and applicator kit for electronic devices of this application simplify the structure of the protective film, eliminating the need for the original positioning release layer. The applicator process is optimized, making film application more convenient for users. After the release film is removed, the spring-loaded part applies pressure, and the self-venting function of the AB adhesive on the exposed film layer automatically completes the application, reducing the need for subsequent manual pressing by the user. This reduces the problem of poor application due to human error, simplifies the application process, increases the success rate, reduces materials, and lowers costs.

[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A screen protector applicator for electronic devices, used for applying protective films to the screens of electronic devices, characterized in that, The film applicator includes: The housing has a diaphragm limiting cavity and a device positioning cavity inside. The device positioning cavity is located above the diaphragm limiting cavity. The diaphragm limiting cavity is used to accommodate the protective film, and the device positioning cavity is used to accommodate the electronic device. A spring-loaded part is disposed at the first end of the diaphragm limiting cavity along its length and applies elastic force toward the device positioning cavity; An insertion port is provided on the outer wall of the first end of the housing and communicates with the diaphragm limiting cavity. The insertion port has a first upper limit inner wall. The insertion port is used to insert a protective film and is limited by the first upper limit inner wall and the elastic part respectively abutting against the two surfaces of the protective film. A positioning port is provided on the outer wall of the second end of the housing and communicates with the diaphragm limiting cavity. The positioning port has a second upper limit inner wall. The positioning port is used to insert the pull strip of the protective film and is limited by the second upper limit inner wall and the bottom surface of the diaphragm limiting cavity respectively abutting against the two surfaces of the protective film. The second end of the housing is provided with a locking part, which is used to mate with the buckle on the pull strip to limit the protective film in the length direction.

2. The screen protector for electronic devices as described in claim 1, characterized in that, The locking part includes side locking blocks, which protrude from both sides of the positioning opening in the width direction. The locking part is used to mate with the locking slots on both sides of the pull strip to limit the protective film in the length direction.

3. The screen protector for electronic devices as described in claim 2, characterized in that, The side block has a first inclined surface and a second inclined surface, and a tapered angle is formed between the first inclined surface and the second inclined surface; The tabs on both sides of the pull bar are V-shaped openings, and the pull bar passes through the positioning opening so that the V-shaped openings are locked on the conical corner.

4. The screen protector for electronic devices as described in claim 2, characterized in that, The locking part includes a bottom hook, and the locking opening of the pull bar is a perforation opened on the surface; The bottom hook protrudes from the bottom surface of the housing and is used to mate with the perforation on the pull strip to limit the protective film in the length direction.

5. The screen protector for electronic devices as described in any one of claims 3-4, characterized in that, A film-pulling opening is provided on the outer wall of the second end of the housing. The film-pulling opening is located above the positioning opening and is connected to the positioning opening. The film-pulling opening is used to pass through when the protective film's release layer is peeled off. The left and right sides of the connection between the positioning port and the film pulling port protrude to form a locking block, and the side of the locking block facing the positioning port forms the second upper limit inner wall.

6. The screen protector for electronic devices as described in claim 5, characterized in that, The pull strip has a first pull-out section and a second pull-out section. The connecting end of the second pull-out section is connected to the first end of the tear-off release layer. The first pull-out section is connected to the end of the second pull-out section away from the connecting end. The width of the first pull-out section is greater than the width of the second pull-out section. During the pulling process of the pull strip, the first pull-out section passes through the positioning hole to limit the protective film, and the second pull-out section comes out from the positioning hole into the film pulling hole to pull the tear-off release layer out from the film pulling hole.

7. The screen protector for electronic devices as described in claim 1, characterized in that, The housing includes a bottom plate and an outer baffle plate arranged circumferentially. The outer baffle plate is located above the bottom plate, and the insertion port is opened on the outer baffle plate at the first end of the housing. The inner upper wall of the insertion port is provided with a pull bar connection end stop, and the first upper limit inner wall is located on the pull bar connection end stop.

8. The screen protector for electronic devices as described in claim 1, characterized in that, The elastic compression part includes: a supporting inclined plate, which is disposed on the bottom surface of the diaphragm limiting cavity; A pressure strip is disposed at one end of the support inclined plate facing the positioning cavity of the device.

9. A screen protector kit, characterized in that, Includes a screen protector and a screen protector for electronic devices as described in any one of claims 1-8; The protective film includes an adhesive layer and a peel-off release layer, wherein a pull strip is provided on the side of the peel-off release layer opposite to the adhesive layer.

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