Portable film pasting device with hollow structure and mobile phone protective film thereof

Abstract

The utility model discloses a portable film sticking device with a hollow structure and a mobile phone protective film thereof, and relates to the technical field of film sticking devices, the portable film sticking device comprises a base plate, a limiting frame is arranged on the base plate, the limiting frame and the base plate are matched to form a containing groove, and the limiting frame comprises a first long frame and a second long frame which are symmetrically arranged left and right in the length direction of the base plate; according to the portable film pasting device of the hollow-out structure, in the using process, through pressing of the first hollow-out groove and the second hollow-out groove, the tempered glass layer has the tendency of being attached from one end to the other end, the film pasting effect is improved, and the light and convenient film pasting device of the hollow-out structure is convenient to use. According to the protective film, the air between the protective film body and the equipment to be subjected to film pasting is rapidly squeezed out, the film pasting effect of the protective film body on the equipment to be subjected to film pasting is better, through the hollowed-out structural design, the overall structure is lighter, use is more convenient and rapid while accurate film pasting positioning is guaranteed, and batch production is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of film applicators, in particular to a lightweight film applicator with a hollow structure and a mobile phone protective film thereof. Background Art

[0002] As described in the published patent "Portable and Simple Mobile Phone Screen Protector" (publication number CN207404003U), mobile phone screen protectors come in a wide variety of types and functions, including privacy screen protectors, mirror screen protectors, and high-definition screen protectors. Applying screen protectors to mobile phones is no longer limited to simply protecting the screen. Users often need to regularly or irregularly apply and replace screen protectors based on their needs and preferences.

[0003] However, applying screen protectors to mobile phones typically requires specialized tools. Currently, there are two common types of specialized screen protector tools: commercial screen protector equipment and consumer screen protector machines. Commercial screen protector equipment, typically used by mobile phone manufacturers, is bulky, complex, and expensive, making it practically impossible for the average phone user to apply screen protectors. Consumer screen protector machines, typically used by professional screen protectors, are also complex and require specialized skills, making them difficult for the average phone user to master.

[0004] In summary, existing mobile phone film-sticking devices have technical problems of complex structure and huge size. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a lightweight film applicator with a hollow structure that can solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A lightweight film applicator with a hollow structure, comprising a base plate, a limiting frame provided on the base plate, the limiting frame and the base plate cooperating to form a receiving groove, the limiting frame comprising a first long frame and a second long frame symmetrically arranged left and right along the length direction of the base plate, and a first short frame and a second short frame symmetrically arranged front and back along the width direction of the base plate;

[0008] A first positioning groove and a second positioning groove are respectively provided on the first short frame and the second short frame, and a first positioning member and a second positioning member are provided on the substrate outside the limiting frame, and the first positioning member and the second positioning member cooperate with the first positioning groove and the second positioning groove respectively to position the mobile phone protective film;

[0009] The side wall of the second short frame is also provided with a pull groove for accommodating the mobile phone protective film to pass through, and the pull groove is connected to the second positioning groove;

[0010] A first hollow groove and a second hollow groove are symmetrically arranged along the length direction on the base plate inside the accommodating groove, and a connecting crossbeam is preset between the first hollow groove and the second hollow groove;

[0011] A first limiting assembly and a second limiting assembly are respectively provided on the inner sides of the first short frame and the second short frame, and a third limiting assembly and a fourth limiting assembly are respectively provided on the inner sides of the first long frame and the second long frame.

[0012] As a further solution of the present invention: the first limiting assembly includes a left limiting boss and a right limiting boss respectively fixed on both sides of the first positioning groove, and the left limiting boss and the right limiting boss are respectively provided with a left limiting step and a right limiting step with a flush height.

[0013] As a further solution of the present invention: the second limiting assembly includes two left limiting bosses and two right limiting bosses respectively fixed on both sides of the second positioning groove.

[0014] As a further solution of the present utility model: the third limiting assembly includes three front limiting bosses and three rear limiting bosses respectively fixed on the two ends of the first long frame, and three front limiting steps and three rear limiting steps are respectively provided on the front three limiting bosses and the rear three limiting bosses. The height of the front three limiting steps is greater than that of the rear three limiting steps, the height of the front three limiting steps is less than or equal to the left limiting step, and the height of the rear three limiting steps is less than the height of the pull groove.

[0015] As a further solution of the present utility model: the fourth limiting assembly includes four front limiting bosses and four rear limiting bosses respectively fixed on the two ends of the second long frame, and four front limiting steps and four rear limiting steps are respectively provided on the front four limiting bosses and the rear four limiting bosses. The height of the front four limiting steps is flush with the front three limiting bosses, and the height of the rear four limiting steps is flush with the rear three limiting bosses.

[0016] As a further solution of the present invention: the base plate inside the accommodating groove is arranged to be tilted downward from the back to the front.

[0017] As a further solution of the present invention: a first reinforcement portion is formed on the side wall of the first hollow groove, and the first reinforcement portion includes a first bending portion, a second bending portion and a third bending portion protruding into the first hollow groove. The first bending portion and the second bending portion are respectively arranged on the left and right sides of the first hollow groove, and the third bending portion is arranged on the connecting beam. The left and right sides of the third bending portion are respectively fixedly connected to the first bending portion and the second bending portion.

[0018] As a further solution of the present utility model: the middle parts of the first long side frame and the second long side frame are respectively provided with a fifth limiting boss and a sixth limiting boss, and the fifth limiting boss and the sixth limiting boss are respectively provided with a fifth limiting step and a sixth limiting step, the fifth limiting step is collinear with the first three limiting steps and the rear three limiting steps in the horizontal direction, and the sixth limiting step is collinear with the first four limiting steps and the rear four limiting steps in the horizontal direction.

[0019] As a further solution of the present invention: the upper end surface of the second short frame is provided with a preset notch extending to both sides.

[0020] A mobile phone protective film is suitable for the above-mentioned lightweight film applicator with a hollow structure, comprising a positioning PET film, a tempered glass layer, an AB adhesive layer, and a tension strip layer that are sequentially laminated to each other. The front and rear ends of the positioning PET film are respectively provided with a first positioning hole and a second positioning hole that are correspondingly engaged with a first positioning piece and a second positioning piece.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] During use, the lightweight film applicator with a hollow structure of the utility model has a tendency to stick from one end to the other end by pressing the first hollow groove and the second hollow groove, so that the gas between the protective film body and the device to be filmed is quickly expelled, thereby making the film-sticking effect of the protective film body on the device to be filmed better. The hollow structural design makes the overall structure lighter, and it is more convenient to use while ensuring accurate film positioning, which is conducive to mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural stereogram of the utility model;

[0024] Figure 2 It is a top view of the utility model;

[0025] Figure 3 yes Figure 2 Cross-section in the middle DD direction;

[0026] Figure 4 yes Figure 1 Partial view at point A in the middle;

[0027] Figure 5 This is a schematic structural diagram of the mobile phone protective film in the present utility model;

[0028] Figure 6 yes Figure 3 Partial view at point B in the middle;

[0029] The reference numerals and names in the figures are as follows:

[0030] Base plate -100, limit frame -200, accommodating groove -300, first short frame -500, second short frame -600, first long frame -700, second long frame -800, first positioning groove -510, second positioning groove -610, first positioning member -110, second positioning member -120, pull groove -690, first hollow groove -130, second hollow groove -140, connecting beam -150, first limit assembly -520, second limit assembly -620, third limit assembly -720, fourth limit assembly -820, left first limit boss -521, right first limit boss -522, left first limit step -523, right first limit step -525, left second limit boss -621, right second limit boss Platform-622, front three limiting bosses-721, rear three limiting bosses-722, front three limiting steps-723, rear three limiting steps-725, front four limiting bosses-821, rear four limiting bosses-822, front four limiting steps-823, rear four limiting steps-825, first reinforcing part-131, first bending part-132, second bending part-133, third bending part-134, fifth limiting boss-726, sixth limiting boss-826, fifth limiting step-727, sixth limiting step-827, preset notch-660, positioning PET film-001, tempered glass layer-002, AB adhesive layer-003, tension strip layer-004, first positioning hole-005, second positioning hole-006. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-6 A lightweight film applicator with a hollow structure includes a substrate 100, a limiting frame 200 is provided on the substrate 100, and the limiting frame 200 cooperates with the substrate 100 to form a receiving groove 300. The limiting frame 200 includes a first long frame 700 and a second long frame 800 symmetrically arranged along the length direction of the substrate 100, and a first short frame 500 and a second short frame 600 symmetrically arranged along the width direction of the substrate 100.

[0033] A first positioning groove 510 and a second positioning groove 610 are respectively formed on the first short frame 500 and the second short frame 600. A first positioning member 110 and a second positioning member 120 are respectively formed on the substrate 100 outside the limiting frame 200. The first positioning member 110 and the second positioning member 120 cooperate with the first positioning groove 510 and the second positioning groove 610 to position the mobile phone protective film.

[0034] The side wall of the second short frame 600 is further provided with a pull groove 690 for accommodating the mobile phone protective film to pass through, and the pull groove 690 is connected to the second positioning groove 610;

[0035] A first hollow groove 130 and a second hollow groove 140 are symmetrically arranged along the length direction on the substrate 100 inside the accommodating groove 300, and a connecting beam 150 is preset between the first hollow groove 130 and the second hollow groove 140;

[0036] A first limiting assembly 520 and a second limiting assembly 620 are respectively provided on the inner sides of the first short frame 500 and the second short frame 600, and a third limiting assembly 720 and a fourth limiting assembly 820 are respectively provided on the inner sides of the first long frame 700 and the second long frame 800;

[0037] During the film application process of the portable film applicator with a hollow structure of the present invention, the protective film is first placed in the receiving groove 300. The mobile phone protective film includes a positioning PET film 001, a tempered glass layer 002, an AB adhesive layer 003, and a tie layer 004 that are sequentially attached to each other. The positioning PET film 001 on the mobile phone protective film is fixedly matched with the first positioning member 110 and the second positioning member 120, so that the positioning PET film 001 is positioned on the film applicator, thereby positioning the mobile phone protective film on the film applicator;

[0038] The film applicator cover is then placed on the device to be film-applied, and the first limiting component 520, the second limiting component 620, the third limiting component 720, and the fourth limiting component 820 respectively abut against the outer edge contour of the device to be film-applied, so that the device to be film-applied is limited in the accommodating groove 300, thereby achieving the positioning of the device to be film-applied on the film applicator;

[0039] Thus, the mobile phone protective film and the device to be film-applied are respectively positioned relative to each other, and then the ab adhesive layer 003 is pulled by the tie layer 004, so that the tie layer 004 and the ab adhesive layer 003 are pulled out from the tie groove 690, thereby separating the ab adhesive layer 003 from between the device to be film-applied and the tempered glass layer 002, so that the tempered glass layer 002 and the device to be film-applied are attached to each other;

[0040] During the exhaust process of the portable film applicator with hollow structure of the utility model, Figure 3As shown, first, the mobile phone protective film is pressed in the first hollow groove 130 to fit one end of the tempered glass layer 002 with the device to be filmed, so that the end of the tempered glass layer 002 can be well fitted with the device to be filmed, thereby giving the tempered glass layer 002 a longitudinal pressure so that the tempered glass layer 002 has a tendency to fit from one end to the other end, and then the second hollow groove 140 is used to press the mobile phone protective film so that the tempered glass layer 002 and the device to be filmed follow the following Figure 2 Exhaust in the direction indicated by the arrow f in the middle, so that the exhaust effect between the tempered glass layer 002 and the equipment to be filmed is better;

[0041] In one embodiment, the exhaust direction can be from the second hollow groove 140 to the first hollow groove 130, with the same effect;

[0042] During use, the lightweight film applicator with a hollow structure of the utility model has a tendency to stick from one end to the other end by pressing the first hollow groove 130 and the second hollow groove 140, so that the gas between the protective film body and the device to be filmed is quickly expelled, so that the protective film body has a better film-sticking effect on the device to be filmed. Through the hollow structural design, the overall structure is lighter, which ensures that the film positioning is accurate and is more convenient to use, which is conducive to mass production.

[0043] In the embodiment of the present invention, the first limiting assembly 520 includes a left limiting boss 521 and a right limiting boss 522 fixed on both sides of the first positioning groove 510, respectively. The left limiting boss 521 and the right limiting boss 522 are respectively provided with a left limiting step 523 and a right limiting step 525 that are flush with each other.

[0044] like Figure 3 As shown, during the film laminating process, after the mobile phone protective film is positioned on the film laminating device, the mobile phone protective film is laminated to the substrate 100, and the height of the mobile phone protective film is between the interval bc;

[0045] In the process of pulling the dust removal layer out from between the mobile phone film body and the mobile phone screen, in order to avoid the two being too tightly attached, which makes it inconvenient to pull out the dust removal layer, a left limiting boss 521 and a right limiting boss 522 are respectively provided on both sides of the first positioning groove 510. The left limiting boss 521 and the right limiting boss 522 are used to limit the film-applying device in the horizontal direction, and the left limiting step 523 and the right limiting step 525 are used to limit the film-applying device in the vertical direction, so that the front end of the screen of the device to be film-applied is between the interval ab, so that a certain gap is reserved between the tempered glass layer 002 and the mobile phone screen during the bonding process, which is convenient for pulling the pull strip layer 004 and the ab adhesive layer 003.

[0046] In the embodiment of the present utility model, the second limiting assembly 620 includes two left limiting bosses 621 and two right limiting bosses 622 respectively fixed on both sides of the second positioning groove 610;

[0047] The second left limiting boss 621 and the second right limiting boss 622 are used to cooperate with the first left limiting boss 521 and the first right limiting boss 522 to limit the film-applying device in the horizontal direction, so as to achieve a better positioning effect of the film-applying device.

[0048] In the embodiment of the present utility model, the third limiting assembly 720 includes three front limiting bosses 721 and three rear limiting bosses 722 respectively fixed at both ends of the first long frame 700, and three front limiting steps 723 and three rear limiting steps 725 are respectively formed on the front three limiting bosses 721 and the rear three limiting bosses 722. The height of the front three limiting steps 723 is greater than that of the rear three limiting steps 725. The height of the front three limiting steps 723 is less than or equal to the left limiting step 523, and the height of the rear three limiting steps 725 is less than the height of the pull groove 690.

[0049] like Figure 3 As shown, the front three limiting bosses 721 and the rear three limiting bosses 722 are used to cooperate with the left limiting boss 521 and the right limiting boss 522 to limit the film laminating device in the horizontal direction;

[0050] The front three limiting steps 723 and the rear three limiting steps 725 are used to cooperate with the left limiting step 523 and the right limiting step 525 to limit the vertical position of the film laminating equipment, so that a certain gap is reserved between the tempered glass layer 002 and the mobile phone screen during the lamination process, which is convenient for pulling the tie layer 004 and the AB adhesive layer 003;

[0051] In the process of pulling the strip layer 004 and the ab adhesive layer 003 out of the strip groove 690, in order to make the pulling of the strip layer 004 smoother, the height of the front three limiting steps 723 is set to be greater than the rear three limiting steps 725, so that the device to be film-applied is tilted downward as a whole in the horizontal direction, and the height of the front three limiting steps 723 is less than or equal to the left limiting step 523, so that the front end of the device to be film-applied can be placed more stably, and the height of the rear three limiting steps 725 is less than the height of the strip groove 690, so that the rear end of the device to be film-applied can better cooperate with the strip groove 690, making the process of pulling the strip layer 004 and the ab adhesive layer 003 out of the strip groove 690 smoother.

[0052] In the embodiment of the present utility model, the fourth limiting assembly 820 includes four front limiting bosses 821 and four rear limiting bosses 822 respectively fixed to the two ends of the second long frame 800, and four front limiting steps 823 and four rear limiting steps 825 are respectively formed on the front four limiting bosses 821 and the rear four limiting bosses 822. The height of the front four limiting steps 823 is flush with the height of the front three limiting bosses 721, and the height of the rear four limiting steps 825 is flush with the height of the rear three limiting bosses 722.

[0053] The front four limiting bosses 821 and the rear four limiting bosses 822 are used to cooperate with the front three limiting bosses 721 and the rear three limiting bosses 722 to better limit the film laminating equipment in the horizontal direction;

[0054] The front four limiting steps 823 and the rear four limiting steps 825 are used to cooperate with the front three limiting steps 723 and the rear three limiting steps 725 to limit the film laminating equipment in the vertical direction, so that a certain gap is reserved between the tempered glass layer 002 and the mobile phone screen during the lamination process, which is convenient for pulling the tie layer 004 and the AB adhesive layer 003;

[0055] The height of the front four limiting steps 823 is flush with the front three limiting bosses 721 , and the height of the rear four limiting steps 825 is flush with the rear three limiting bosses 722 , so as to place the device to be film-laminated more stably in the film laminator.

[0056] In the embodiment of the present invention, the substrate 100 inside the receiving groove 300 is tilted downward from the back to the front;

[0057] like Figure 6 As shown, the dotted line j represents the horizontal reference line, and the dotted line k represents the inclination angle of the upper end surface of the substrate 100. The inclined design of the substrate 100 makes the space between the mobile phone protective film and the mobile phone screen larger, making it easier to pull out the pull strip layer 004 and the ab glue layer 003 without stucking.

[0058] In the embodiment of the present invention, a first reinforcement portion 131 is formed on the side wall of the first hollow groove 130. The first reinforcement portion 131 includes a first bent portion 132, a second bent portion 133, and a third bent portion 134 protruding into the first hollow groove 130. The first bent portion 132 and the second bent portion 133 are respectively provided on the left and right sides of the first hollow groove 130. The third bent portion 134 is provided on the connecting beam 150. The left and right sides of the third bent portion 134 are respectively fixedly connected to the first bent portion 132 and the second bent portion 133.

[0059] By providing the first bending portion 132 , the second bending portion 133 and the third bending portion 134 , the overall structural strength of the first hollow groove 130 is improved, while the appearance is enhanced;

[0060] In the embodiment of the present invention, a second reinforcement portion symmetrical to the first reinforcement portion 131 is formed on the side wall of the second hollow groove 140;

[0061] By providing the second reinforcement portion, the overall structural strength of the second hollow groove 140 is improved, while the aesthetic appearance is enhanced.

[0062] In the embodiment of the present utility model, the middle parts of the first long side frame 700 and the second long side frame 800 are further provided with a fifth limiting boss 726 and a sixth limiting boss 826, respectively. The fifth limiting boss 726 and the sixth limiting boss 826 are respectively provided with a fifth limiting step 727 and a sixth limiting step 827. The fifth limiting step 727 is collinear with the first three limiting steps 723 and the rear three limiting steps 725 in the horizontal direction, and the sixth limiting step 827 is collinear with the first four limiting steps 823 and the rear four limiting steps 825 in the horizontal direction.

[0063] The fifth limiting boss 726 and the sixth limiting boss 826 are used to cooperate with the third limiting assembly 720 and the fourth limiting assembly 820 to better limit the film laminating device in the horizontal direction;

[0064] The fifth limiting step 727 and the sixth limiting step 827 are used to cooperate with the third limiting component 720 and the fourth limiting component 820 to limit the film-applying device in the vertical direction, so that the middle part of the film-applying device can be better supported and the film-applying process can be more stable.

[0065] In the embodiment of the present invention, the upper end surface of the second short frame 600 is provided with a preset notch 660 extending toward both sides;

[0066] like Figure 1 As shown, since the middle of the second short frame 600 is cut off by the second positioning groove 610, and the lower part of the second short frame 600 is suspended by the pull groove 690, in order to ensure the structural strength of the second short frame 600, the second short frame 600 needs to be widened in the front and rear directions. However, the widened second short frame 600 is not elastic enough, which is not conducive to the insertion of the device to be film-applied. Therefore, a preset groove 660 extending to both sides is provided on the upper end face of the second short frame 600. On the one hand, the overall mass of the second short frame 600 is reduced, and on the other hand, the overall elasticity of the second short frame 600 is made better, which is more conducive to the insertion of the device to be film-applied.

[0067] A mobile phone protective film, suitable for the above-mentioned portable film applicator with a hollow structure, comprising a positioning PET film 001, a tempered glass layer 002, an AB adhesive layer 003, and a tie layer 004, which are sequentially attached to each other. The front and rear ends of the positioning PET film 001 are respectively provided with a first positioning hole 005 and a second positioning hole 006 corresponding to the first positioning member 110 and the second positioning member 120;

[0068] like Figure 5 As shown, the first positioning hole 005 and the second positioning hole 006 are respectively engaged with the first positioning member 110 and the second positioning member 120, so that the mobile phone protective film can be quickly positioned and the mobile phone protective film can be fixed on the film applicator at the same time;

[0069] In one embodiment, the first positioning member 110 and the second positioning member 120 are common technical means in this field, and the working principles of the first positioning member 110 and the second positioning member 120 can be known from the drawings, which will not be repeated here.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A light-weight film applicator with a hollow structure, comprising a substrate (100), a limiting frame (200) provided on the substrate (100), the limiting frame (200) cooperating with the substrate (100) to form a receiving groove (300), the limiting frame (200) comprising a first long frame (700) and a second long frame (800) symmetrically arranged left and right along the length direction of the substrate (100), and a first short frame (500) and a second short frame (600) symmetrically arranged front and back along the width direction of the substrate (100), characterized in that ； A first positioning groove (510) and a second positioning groove (610) are respectively provided on the first short frame (500) and the second short frame (600); a first positioning member (110) and a second positioning member (120) are provided on the base plate (100) outside the limiting frame (200); the first positioning member (110) and the second positioning member (120) cooperate with the first positioning groove (510) and the second positioning groove (610) to position the mobile phone protective film; A pull groove (690) for accommodating the mobile phone protective film is further provided on the side wall of the second short frame (600), and the pull groove (690) is connected to the second positioning groove (610); A first hollow groove (130) and a second hollow groove (140) are symmetrically arranged along the length direction on the base plate (100) inside the accommodating groove (300), and a connecting crossbeam (150) is preset between the first hollow groove (130) and the second hollow groove (140); A first limiting component (520) and a second limiting component (620) are provided on the inner sides of the first short frame (500) and the second short frame (600), respectively; a third limiting component (720) and a fourth limiting component (820) are provided on the inner sides of the first long frame (700) and the second long frame (800), respectively.

2. The portable film applicator with a hollow structure according to claim 1, characterized in that: The first limiting assembly (520) comprises a left limiting boss (521) and a right limiting boss (522) respectively fixed on both sides of the first positioning groove (510), and a left limiting step (523) and a right limiting step (525) respectively provided on the left limiting boss (521) and the right limiting boss (522) with a height flush.

3. The portable film applicator with a hollow structure according to claim 2, characterized in that: The second limiting assembly (620) comprises two left limiting bosses (621) and two right limiting bosses (622) respectively fixed on both sides of the second positioning groove (610).

4. The portable film applicator with a hollow structure according to claim 2, characterized in that: The third limiting assembly (720) comprises three front limiting bosses (721) and three rear limiting bosses (722) respectively fixed on the two ends of the first long frame (700); three front limiting steps (723) and three rear limiting steps (725) are respectively provided on the front three limiting bosses (721) and the rear three limiting bosses (722); the height of the front three limiting steps (723) is greater than that of the rear three limiting steps (725); the height of the front three limiting steps (723) is less than or equal to the left limiting step (523); and the height of the rear three limiting steps (725) is less than the height of the pull groove (690).

5. The portable film applicator with a hollow structure according to claim 4, characterized in that: The fourth limiting assembly (820) comprises four front limiting bosses (821) and four rear limiting bosses (822) respectively fixed to the two ends of the second long frame (800), and four front limiting steps (823) and four rear limiting steps (825) are respectively provided on the four front limiting bosses (821) and the four rear limiting bosses (822). The height of the four front limiting steps (823) is flush with the height of the three front limiting bosses (721), and the height of the four rear limiting steps (825) is flush with the height of the three rear limiting bosses (722).

6. A lightweight film applicator with a hollow structure according to any one of claims 1 to 5, characterized in that: The base plate (100) inside the accommodating groove (300) is arranged to tilt downward from the back to the front.

7. The portable film applicator with a hollow structure according to claim 6, characterized in that: A first reinforcement portion (131) is formed on the side wall of the first hollow groove (130), and the first reinforcement portion (131) includes a first bending portion (132), a second bending portion (133), and a third bending portion (134) protruding into the first hollow groove (130). The first bending portion (132) and the second bending portion (133) are respectively arranged on the left and right sides of the first hollow groove (130), and the third bending portion (134) is arranged on the connecting beam (150). The left and right sides of the third bending portion (134) are respectively fixedly connected to the first bending portion (132) and the second bending portion (133).

8. The portable film applicator with a hollow structure according to claim 7, characterized in that: A fifth limiting boss (726) and a sixth limiting boss (826) are respectively provided at the middle portions of the first long frame (700) and the second long frame (800), and a fifth limiting step (727) and a sixth limiting step (827) are respectively provided on the fifth limiting boss (726) and the sixth limiting boss (826). The fifth limiting step (727) is collinear with the first three limiting steps (723) and the rear three limiting steps (725) in the horizontal direction, and the sixth limiting step (827) is collinear with the first four limiting steps (823) and the rear four limiting steps (825) in the horizontal direction.

9. The portable film applicator with a hollow structure according to claim 8, characterized in that: The upper end surface of the second short frame (600) is provided with a preset notch (660) extending towards both sides.

10. A mobile phone protective film, characterized in that: A lightweight film applicator with a hollow structure applicable to any one of claims 1 to 8, comprising a positioning PET film (001), a tempered glass layer (002), an AB adhesive layer (003), and a tension strip layer (004) which are sequentially adhered to each other, wherein the front and rear ends of the positioning PET film (001) are respectively provided with a first positioning hole (005) and a second positioning hole (006) which are correspondingly engaged with a first positioning member (110) and a second positioning member (120).

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