Film pasting auxiliary shell and film pasting set

By using an inclined spring structure in the screen protector auxiliary shell to apply positive pressure to the screen, the problem of uncomfortable air venting in existing screen protector devices is solved, resulting in faster air venting and better screen protector application, thus improving the user experience.

CN223972909UActive Publication Date: 2026-03-06郑少英
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-31
Publication Date
2026-03-06

AI Technical Summary

Technical Problem

Existing screen protector application devices have an improperly positioned air venting and pressing mechanism, which can easily cause dust to get between the tempered glass screen protector and the screen, forming air bubbles and affecting the application effect.

Method used

A screen protector auxiliary shell was designed, comprising a positioning frame and a support plate. The support plate is provided with inclined first and second springs for applying positive pressure to the screen during the screen protector application process to ensure air venting. The screen is pressed evenly by the cooperation of the first and second suspended ends.

Benefits of technology

It improves the air venting speed and effectiveness of screen protector application, reduces dust entry, and enhances the quality of screen protector application and user experience.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223972909U_ABST
    Figure CN223972909U_ABST
Patent Text Reader

Abstract

The utility model relates to a film pasting auxiliary shell and a film pasting set. The film pasting set comprises the film pasting auxiliary shell and a tempered film. The film pasting auxiliary shell comprises a positioning frame and a bearing plate which are connected, the positioning frame is provided with an installation cavity for containing and positioning the electronic product, and the positioning frame is provided with a first end and a second end which are oppositely arranged in the length direction of the positioning frame. The bearing plate is integrally connected to the edge of the positioning frame and comprises a body, a first elastic piece and a second elastic piece, the first elastic piece and the second elastic piece are arranged at intervals, the body serves as the cavity bottom wall of the mounting cavity, the first elastic piece inclines to the cavity bottom wall of the mounting cavity and extends towards the first end, and the second elastic piece extends towards the second end. In the process that a user pulls the film, the second elastic piece is pressed, and the end parts of the first elastic piece and the second elastic piece apply positive pressure to the electronic product at the same time to exhaust, so that the exhaust speed is increased, the dust removal effect is enhanced, and a better film pasting effect is obtained.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of film application device technology, and in particular to a film application auxiliary shell and film application kit. Background Technology

[0002] As we all know, screen protectors for common electronic products such as mobile phones, tablets, and educational devices are a way to protect the screens. However, the screen protectors currently available to consumers are usually sold separately. To apply a screen protector properly, it is often necessary to use an additional tool or purchase a screen protector application tool, which greatly increases the difficulty and cost for customers. Existing screen protector application aids are mainly conventional screen protector application tools and dust-free application boxes. Although screen protector application tools can reduce the difficulty of application, conventional tools require external force to press and release air after the screen protector is pulled out. However, if the air release is not applied correctly, dust can easily get between the tempered glass screen protector and the screen, forming air bubbles and resulting in a poor application effect. Utility Model Content

[0003] The present invention provides a screen protector auxiliary shell and screen protector kit to solve the technical problem that dust can easily enter between the tempered glass screen protector and the screen due to improper pressure on the air vent, resulting in air bubbles and poor screen protector application.

[0004] First aspect

[0005] This utility model discloses a film-applying auxiliary shell, comprising:

[0006] The positioning frame has an installation cavity for accommodating positioning electronic products, and the positioning frame has a first end and a second end that are disposed opposite to each other along its length.

[0007] A support plate is integrally connected to the edge of the positioning frame. The support plate extends radially inward along the mounting cavity, and a portion of the support plate forms the bottom wall of the mounting cavity. The support plate includes a body and a first spring and a second spring spaced apart. The first spring is inclined to the bottom wall of the mounting cavity and extends toward the first end. The first spring has a first connecting end and a first suspended end. The first connecting end is connected to the body, and the first suspended end is tilted toward the first end. The second spring extends toward the second end and includes a second connecting end and a second suspended end. The second connecting end is integrally connected to the body. When the tempered glass film is placed in the mounting cavity, the first suspended end is pressed and it adheres to the screen of the electronic product. When the second suspended end is pressed, the first suspended end and the second suspended end simultaneously apply positive pressure to the screen of the electronic product to release air.

[0008] In one embodiment, the bottom wall of the mounting cavity is provided with a first clearance notch that communicates with the mounting cavity. The first clearance notch allows a portion of the support plate to form the first spring piece, and the first clearance notch allows the first suspended end to tilt up and enter the mounting cavity to abut against the screen of the electronic product.

[0009] In one embodiment, the first spring and the body are integrally injection molded structures, the bottom wall of the mounting cavity is provided with a first groove and a second groove that extend longitudinally and are connected laterally, and the bearing plate forms the first spring between the first groove and the second groove.

[0010] In one embodiment, the bottom wall of the mounting cavity is provided with a second clearance notch that communicates with the mounting cavity. The second clearance notch allows a portion of the support plate to form the second spring piece, and the second clearance notch allows the second suspended end to be pressed into the mounting cavity to abut against the screen of the electronic product.

[0011] In one embodiment, the second spring and the body are integrally injection molded structures, and the bottom wall of the mounting cavity is provided with a third groove and a fourth groove that extend longitudinally and are connected laterally. The bearing plate forms the second spring between the third groove and the fourth groove.

[0012] In one embodiment, the orthographic projections of the first spring and the second spring on the bottom wall of the mounting cavity are on the same straight line; the first spring and the second spring are each symmetrical about the left and right sides of the positioning frame.

[0013] In one embodiment, the second spring is inclined to the bottom wall of the mounting cavity and the second suspended end is tilted toward the second end.

[0014] In one embodiment, the first suspended end is attached with a double-sided adhesive layer on one side of the mounting cavity, the double-sided adhesive layer being used to bond and fix the tempered glass film inside the mounting cavity.

[0015] In one embodiment, the film application assist device further includes multiple locking blocks, which protrude from the inner sidewall of the mounting cavity and are close to the bottom wall of the mounting cavity. The number of locking blocks is multiple and they are arranged at intervals around the side periphery of the mounting cavity to position and engage the tempered glass film in the mounting cavity.

[0016] Secondly, the utility model discloses a screen protector set, comprising:

[0017] As described in any of the preceding embodiments, the film-applying auxiliary shell; and

[0018] A tempered glass screen protector is placed inside the mounting cavity. The tempered glass screen protector includes a protective film, a dust removal film, and a pull-out film. The dust removal film is attached to one side of the protective film. The pull-out film is connected to one end of the dust removal film and is placed between the dust removal film and the electronic product. The pull-out film extends out of one end of the film-applying auxiliary shell and, under the action of external force, can cause the dust removal film to flip up and separate from the protective film. At the same time, the dust removal film moves away from the mounting cavity. The protective film can automatically adhere to the screen of the electronic product under the pressure of the first suspended end and the second suspended end.

[0019] As can be seen from the above technical solution, the embodiments of this utility model have at least the following advantages and positive effects:

[0020] This utility model provides a screen protector auxiliary shell and a screen protector application kit. The kit includes the auxiliary shell and a tempered glass screen protector, with the tempered glass screen protector placed inside the mounting cavity of the auxiliary shell. On one hand, because the first spring is inclined to the bottom wall of the mounting cavity, the first suspended end consistently applies positive pressure to the screen of the electronic product during the user's application process, eliminating the need for the user to press other parts of the auxiliary shell to achieve the air venting process. On the other hand, because the first and second suspended ends simultaneously apply positive pressure to the screen of the electronic product, both the top and bottom edges of the screen are pressed, significantly accelerating the air venting speed, enhancing the venting effect, and improving the screen protector application effect. The auxiliary shell also features a first and second spring arranged at intervals. Therefore, this auxiliary shell has a better dust removal and air venting effect, providing users with a better screen protector application experience and effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of a film-applying kit according to an embodiment of this application;

[0023] Figure 2 for Figure 1 An exploded view of the film application kit shown.

[0024] Figure 3 for Figure 1 A schematic diagram of the structure of the film application auxiliary shell in the film application kit shown;

[0025] Figure 4 for Figure 3 Another view of the film-applying auxiliary shell shown;

[0026] Figure 5 for Figure 4 The rear view and axisymmetric schematic diagram of the film-applying auxiliary shell are shown.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1. Film application kit; 10. Film application auxiliary shell; 100. Positioning frame; 110. Mounting cavity; 120. First end; 130. Second end; 140. First clearance notch; 141. First groove; 142. Second groove; 150. Second clearance notch; 151. Third groove; 152. Fourth groove; 200. Support plate; 210. Body; 220. First spring; 221. First connecting end; 222. First suspended end; 230. Second spring; 231. Second connecting end; 232. Second suspended end; 300. Double-sided adhesive layer; 400. Locking block;

[0029] 20. Tempered glass film; 21. Release film; 22. Protective film; 23. Dust removal film; 24. Pull-out film. Detailed Implementation

[0030] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0031] Furthermore, 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 indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "setup," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] Reference Figure 1 and Figure 2This application provides a novel screen protector kit 1, comprising a screen protector auxiliary shell 10 and a tempered glass screen protector 20. The tempered glass screen protector 20 is positioned and installed inside the screen protector auxiliary shell 10. Users can use this screen protector kit 1 to apply a screen protector to their electronic products to protect the original screen of the electronic products. It should be noted that the electronic products mentioned here include, but are not limited to, mobile phones, tablets, educational machines, game consoles, and other products with displays.

[0034] Reference Figure 3 and Figure 4 The film-applying auxiliary housing 10 includes a connected positioning frame 100 and a carrier plate 200, which are combined with... Figure 1 The positioning frame 100 has an installation cavity 110 for accommodating the positioning electronic product and the tempered glass screen protector 20. The positioning frame 100 has a first end 120 and a second end 130 that are arranged opposite each other along its length. When the electronic product is installed and positioned in the installation cavity 110, the first end 120 and the second end 130 correspond to the upper and lower ends of the electronic product, respectively. A support plate 200 is integrally connected to one side of the edge of the positioning frame 100. The support plate 200 extends radially inward along the installation cavity 110, and a portion of the support plate 200 forms the bottom wall of the installation cavity 110. The support plate 200 provides support for the tempered glass screen protector 20 and the electronic product to prevent them from detaching from the positioning frame 100 along the depth direction of the installation cavity 110. The positioning frame 100 and the support plate 200 together form the installation cavity 110, with the positioning frame 100 serving as the side periphery of the installation cavity 110 and a portion of the support plate 200 serving as the bottom plate of the installation cavity 110.

[0035] Continue to refer to Figure 3 and Figure 4 The support plate 200 includes a body 210, a first spring piece 220, and a second spring piece 230. The body 210 serves as the base plate of the mounting cavity 110, and one side of the body 210 forms the bottom wall of the mounting cavity 110. The first spring piece 220 and the second spring piece 230 are both connected to the body 210 and are spaced apart. Specifically, the first spring piece 220 is inclined to the bottom wall of the mounting cavity 110 and extends toward the first end 120. The first spring piece 220 has a first connecting end 221 and a first suspended end 222. The first connecting end 221 is integrally connected to the body 210, and the first suspended end 222 is raised toward the first end 120 and located inside the mounting cavity 110. The second spring piece 230 extends toward the second end 130 and includes a second connecting end 231 and a second suspended end 232. The second connecting end 231 is integrally connected to the body 210. When the tempered glass film 20 is placed in the mounting cavity 110, pressing the first suspended end 222 and adhering to the screen of the electronic product, the second suspended end 232 is pressed. The first suspended end 222 and the second suspended end 232 simultaneously apply positive pressure to the screen of the electronic product to release air. The first suspended end 222 and the second suspended end 232 are arranged at intervals along the length of the positioning frame 100, respectively close to the first end 120 and the second end 130.

[0036] The screen protector attachment and attachment kit provided in this application, on the one hand, because the first spring tab 220 is inclined to the bottom wall of the mounting cavity 110, the first suspended end 222 always applies positive pressure to the screen of the electronic product during the user's application process, achieving the air venting process without requiring the user to press other parts of the screen protector attachment 10. On the other hand, because the first suspended end 222 and the second suspended end 232 simultaneously apply positive pressure to the screen of the electronic product, both the top and bottom edges of the screen are pressed, thereby greatly accelerating the air venting speed, enhancing the air venting effect, and improving the screen protector application effect. Furthermore, the first spring tab 220 and the second spring tab 230 are spaced apart. Therefore, the screen protector attachment 10 of this application has a better dust removal and air venting effect, allowing users to obtain a better screen protector application experience and effect.

[0037] Preferably, in conjunction with reference Figure 3 and Figure 4 In one embodiment, the second spring 230 is inclined to the bottom wall of the mounting cavity 110, and the second suspended end 232 is tilted towards the second end 130, with the second suspended end 232 located inside the mounting cavity 110. During the process of applying the screen protector, the first suspended end 222 and the second suspended end 232 simultaneously apply positive pressure to the screen of the electronic product to release air, eliminating the need for external force pressing and making operation more convenient. On the other hand, pressing at two points can also stably position the tempered glass screen protector 100. It should be understood that in this embodiment, whether the second spring 230 is inclined to the bottom wall of the mounting cavity 110 is not limited, as long as the second suspended end 232 can automatically or with the aid of external force apply positive pressure to the electronic product.

[0038] Preferably, refer to Figure 4 In one embodiment, the bottom wall of the mounting cavity 110 has a first clearance notch 140 communicating with the mounting cavity 110. The first clearance notch 140 allows a portion of the support plate 200 to form a first spring piece 220, and the first clearance notch 140 allows the first suspended end 222 to tilt upwards and enter the mounting cavity 110 to abut against the screen of the electronic product. Here, the first clearance notch 140 provides deformation space for the first spring piece 220 to accumulate or release elastic force. In this embodiment, the first clearance notch 140 can be… Figure 4The channel connecting the outside world and the mounting cavity 110 shown can be transformed into a recessed groove on the bottom wall of the mounting cavity 110 in other embodiments, as long as it provides deformation space for the first spring 220. The first connecting end 221 is connected to the inner sidewall of the first clearance notch 140 away from the first end 120. The first clearance notch 140 provides mounting space for the first spring 220, thereby increasing the overall structural compactness of the film-applying auxiliary shell 10. It should be noted that in other embodiments, the first clearance notch 140 is not required. It is only necessary to ensure that the length extension direction of the first spring 220 is inclined to the bottom wall of the mounting cavity 110, so that the first suspended end 222 tilts towards the first end 120 to abut against the screen of the electronic product. Therefore, in this application, without considering the structural compactness of the film-applying auxiliary shell 10, the presence or absence of the first clearance notch 140 is not limited, and the implementation form of the first clearance notch 140 is not limited.

[0039] Preferably, continue to refer to Figure 4 In one embodiment, the first spring piece 220 and the body 210 are integrally injection molded to enhance the connection stability between the first spring piece 220 and the body 210; the bottom wall of the mounting cavity 110 is provided with a longitudinally extending and laterally connected first groove 141 and second groove 142, and the bearing plate 200 forms the first spring piece 220 between the first groove 141 and the second groove 142. Figure 4 As shown, the first connecting end 221 is connected to the inner wall of the first clearance notch 140 away from the first end 120, and divides a portion of the first clearance notch 140 into a first groove 141 and a second groove 142. The portion of the first spring piece 220, except for the first connecting end 221, is spaced apart from the inner wall of the first clearance notch 140, facilitating flexible movement of the first spring piece 220 within the first clearance notch 140 to accumulate or release elastic force, reducing contact wear between the first spring piece 220 and the inner wall of the first clearance notch 140 during movement. It should be noted that, firstly, without considering the connection stability of the first spring piece 220, the connection method between the first spring piece 220 and the body 210 is not limited; they can be integrally connected by injection molding, bonding, or interference fit. Secondly, without considering the contact wear of the first spring piece 220, the presence or absence of the first groove 141 or the second groove 142 is not limited in this application.

[0040] Preferably, continue to refer to Figure 4In one embodiment, the bottom wall of the mounting cavity 110 has a second clearance notch 150 communicating with the mounting cavity 110. The second clearance notch 150 allows a portion of the support plate 200 to form a second spring piece 230, and allows the second suspended end 232 to be compressed and enter the mounting cavity 110 to abut against the screen of the electronic product. Here, the second clearance notch 150 provides deformation space for the second spring piece 230 to accumulate or release elastic force. The second connecting end 231 is connected to the inner sidewall of the second clearance notch 150 away from the first end 120. The second clearance notch 150 provides mounting space for the second spring piece 230, increasing the overall structural compactness of the film-applying auxiliary shell 10. It should be noted that in other embodiments, the second clearance notch 150 is not required; it is sufficient that the second suspended end 232 can be compressed and enter the mounting cavity 110 to abut against the screen of the electronic product. Therefore, in this application, without considering the structural compactness of the film-applying auxiliary shell 10, the setting of the second clearance notch 150 is not limited.

[0041] Preferably, continue to refer to Figure 4 In one embodiment, the second spring piece 230 and the body 210 are integrally injection molded to enhance the connection stability between the second spring piece 230 and the body 210; the bottom wall of the mounting cavity 110 is provided with a longitudinally extending and laterally connected third groove 151 and a fourth groove 152, and the bearing plate 200 forms the second spring piece 230 between the third groove 151 and the fourth groove 152. Figure 4 As shown, the second connecting end 231 is connected to the inner wall of the second clearance notch 150 away from the second end 130, and divides a portion of the second clearance notch 150 into a third groove 151 and a fourth groove 152. The portion of the second spring piece 230, except for the second connecting end 231, is spaced apart from the inner wall of the second clearance notch 150, facilitating flexible movement of the second spring piece 230 within the second clearance notch 150 to accumulate or release elastic force, reducing contact wear between the second spring piece 230 and the inner wall of the second clearance notch 150 during movement. It should be noted that, firstly, without considering the connection stability of the second spring piece 230, the connection method between the second spring piece 230 and the body 210 is not limited; they can be integrally connected by injection molding, bonding, or interference fit. Secondly, without considering the contact wear of the second spring piece 230, the presence or absence of the third groove 151 or the fourth groove 152 is not limited in this application.

[0042] Preferably, refer to Figure 5In one embodiment, the orthographic projections of the first spring piece 220 and the second spring piece 230 on the bottom wall of the mounting cavity 110 are on the same straight line. Here, orthographic projection refers to the orthographic projections of their axial symmetry lines on the bottom wall of the mounting cavity 110 being on the same straight line. The first spring piece 220 and the second spring piece 230 extend in opposite directions, and the first connecting end 221 and the second connecting end 231 are integrally formed and connected. The connecting line between the first suspended end 222 and the second suspended end 232 is parallel to the length extension direction of the positioning frame 100. This ensures that the connecting line of the two exhaust force application points is parallel to the length extension direction of the positioning frame 100, allowing for uniform exhaust from both ends of the electronic product's screen towards the center, further accelerating the exhaust speed and improving the exhaust effect. It should be noted that in other embodiments, the first spring piece 220 and the second spring piece 230 also extend in opposite directions and are staggered.

[0043] Further reference Figure 5 In one embodiment, both the first spring 220 and the second spring 230 are symmetrical about the left and right relative to the positioning frame 100, that is, both are axially symmetrical about the longitudinal center line of the positioning frame 100. This not only improves the axial symmetry aesthetics of the entire film-applying auxiliary shell 10, but also enhances the uniformity of exhaust diffusion on the screen of the electronic product, thereby further accelerating the exhaust rate and improving the exhaust effect. It should be noted that, without considering the structural aesthetics of the entire film-applying auxiliary shell 10 and further accelerating the exhaust rate, whether the first spring 220 or the second spring 230 is symmetrical about the left and right relative to the positioning frame 100 is not limited.

[0044] Preferably, in conjunction with reference Figure 2 and Figure 4 The first suspended end 222 has a double-sided adhesive layer 300 attached to one side of the mounting cavity 110. Since the first suspended end 222 will be raised to abut against the tempered glass film 20, the double-sided adhesive layer 300 is used to adhere and fix the tempered glass film inside the mounting cavity 110. It should be noted that the double-sided adhesive layer 300 is only one specific way to fix the tempered glass film 20 inside the mounting cavity 110. Therefore, in this application, the presence or absence of the double-sided adhesive layer 300 is not limited. Any means or methods that can fix the tempered glass film 20 inside the mounting cavity 110 should be protected.

[0045] Preferably, in conjunction with reference Figure 1 and Figure 2In one embodiment, the film-applying auxiliary housing 10 includes locking blocks 400. The locking blocks 400 protrude from the inner wall of the mounting cavity 110 and are close to the bottom wall of the mounting cavity 110. Multiple locking blocks 400 are arranged at intervals around the periphery of the mounting cavity 110 to engage and position the tempered glass film 20 within the mounting cavity 110. It should be noted that in this application, the positioning of the electronic product within the mounting cavity 110 is not considered, and the presence or absence of locking blocks 400 is not limited. Furthermore, any other methods or means that can effectively position and engage the tempered glass film 20 within the mounting cavity 110 should be included.

[0046] Preferably, in conjunction with reference to Figure 1 and Figure 2 In one embodiment, the tempered glass film 20 includes a release film 21, a protective film 22, a dust removal film 23, and a pull-out film 24 that are attached sequentially. The tempered glass film 20 is bonded and fixed in the mounting cavity 110 by a double-sided adhesive layer 300 to form a film application kit 1, wherein the pull-out film 24 extends out to the second end 130, and the double-sided adhesive layer 300 here bonds the release film 21 to the bottom wall of the mounting cavity 110. The user aligns and covers the screen protector kit 1 onto one side of the screen of the electronic product. A pull-out film 24, connected to one end of the dust removal film 23, is placed between the dust removal film 23 and the electronic product. The pull-out film 24 extends beyond one end (second end 130) of the screen protector auxiliary shell 10 and, under external force, can cause the dust removal film 23 to flip outwards and separate from the protective film 22. This external force is generally pulled by the user. Simultaneously, the dust removal film 23 moves away from the mounting cavity 110. Under the pressure of the first suspended end 222 and the second suspended end 232, the protective film 22 automatically adheres to the screen of the electronic product. The screen protector auxiliary shell 10 is removed, and the release film 21 is peeled off and the protective film 22 is cleaned to complete the screen protector application. It should be understood that in other embodiments, the double-sided adhesive layer 300 can be directly bonded to the protective film 22. After removing the screen protector auxiliary shell 10, cleaning the protective film 22 completes the screen protector application. Therefore, in this application, the presence or absence of the release film 21 is not limited.

[0047] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A sticker assisting case, characterized by, The application relates to a film pasting auxiliary device. The positioning frame is provided with a mounting cavity for accommodating an electronic product, and the positioning frame has a first end and a second end oppositely arranged along the length direction of the positioning frame. The mounting cavity is provided with a first avoiding gap for the first elastic sheet, and the first avoiding gap is used for the first overhanging end to be buckled into the mounting cavity to abut against the screen of the electronic product. 2.The film pasting auxiliary case according to claim 1, characterized in that, The first elastic sheet and the main body are integrally formed by injection molding, the cavity bottom wall of the mounting cavity is provided with a first wire slot and a second wire slot which longitudinally extend and laterally connect, and the first elastic sheet is formed between the first wire slot and the second wire slot. 3.The film pasting auxiliary case according to claim 2, characterized in that, The mounting cavity is provided with a second avoiding gap for the second elastic sheet, and the second avoiding gap is used for the second overhanging end to be pressed into the mounting cavity to abut against the screen of the electronic product. 4.The film pasting auxiliary case according to claim 1, characterized in that, The second elastic sheet and the main body are integrally formed by injection molding, the cavity bottom wall of the mounting cavity is provided with a third wire slot and a fourth wire slot which longitudinally extend and laterally connect, and the second elastic sheet is formed between the third wire slot and the fourth wire slot. 5.The film pasting auxiliary shell according to claim 4, characterized in that, The first elastic sheet and the second elastic sheet are projected on the same straight line on the cavity bottom wall of the mounting cavity; and the first elastic sheet and the second elastic sheet are each left-right symmetrical relative to the positioning frame. 6.The film pasting auxiliary case according to claim 1, characterized in that, The second elastic sheet is inclined to the cavity bottom wall of the mounting cavity, and the second overhanging end is buckled towards the second end. 7.The film pasting auxiliary case according to claim 1, characterized in that, The first overhanging end is attached with a double-sided adhesive layer on one side of the mounting cavity, and the double-sided adhesive layer is used for bonding and fixing the tempered film in the mounting cavity. 8.The film pasting auxiliary case according to any one of claims 1-7, wherein, The film pasting auxiliary device further comprises a plurality of clamping blocks which are arranged on the inner side wall of the mounting cavity and close to the cavity bottom wall of the mounting cavity.

9. The film-assisted case of any one of claims 1-7, wherein, The application relates to a film pasting auxiliary device. 10.A sticker set, characterized in that, The film pasting auxiliary device is used for the film pasting auxiliary shell as claimed in any one of claims 1 to 9. and ​ The tempered film is arranged in the mounting cavity, and the tempered film comprises a protective film, a dust removal film and a pulling film. The dust removal film is attached to one side of the protective film. The pulling film is connected to one end of the dust removal film and arranged between the dust removal film and the electronic product. The pulling film extends out of one end of the film pasting auxiliary shell and can drive the dust removal film to turn over and rise up under the action of external force, so that the dust removal film is separated from the protective film. The dust removal film is simultaneously moved to separate from the mounting cavity. The protective film can be automatically attached to the screen of the electronic product under the pressing action of the first overhanging end and the second overhanging end.