Positioning optimized box dust-free bin and film pasting assembly

Abstract

This utility model relates to a positioning-optimized box-type cleanroom and a film-applying assembly. The cleanroom includes a film applicator and a box body. The film applicator forms a receiving space for placing the device to be applied. A positioning plate is provided at the front end of the receiving space, and the positioning plate is provided with a charging port positioning pin. Positioning inserts are provided on both sides of the receiving space. The positioning plate and positioning inserts are provided with guide posts to fix the protective film above the receiving space. The film applicator is disposed inside the box body, which can be opened to expose the film applicator. The box body has a front movable piece with a flexible component. The front movable piece can be folded inward to support the protective film downward. The box-type cleanroom improves the film-applying accuracy and adaptability through multi-dimensional structural design, comprehensively solving the problems of unstable positioning, adhesion deviation, and low adaptability in traditional film application, while balancing ease of operation and film application effect.

Description

Technical Field

[0001] This utility model relates to the field of screen protector technology for electronic devices. Background Technology

[0002] Currently, cleanroom storage products used for screen protector application to mobile phones and other electronic devices generally suffer from insufficient positioning stability. Existing technologies primarily rely on the device's charging port for positioning, but this single-point positioning method based solely on the charging port has significant drawbacks:

[0003] Insufficient positioning accuracy: The charging port is small and has a single location. During the application of the screen protector, the device is prone to shifting due to external force or operational errors, resulting in misalignment between the screen protector and the screen.

[0004] Large deformation: Single-point positioning cannot effectively constrain the entire equipment. The equipment is prone to twisting or warping during film application, resulting in local stress concentration during the protective film application process.

[0005] Poor venting performance: Device misalignment and deformation can disrupt the uniform contact between the protective film and the screen, preventing gas from venting along the preset path and resulting in random venting, which seriously affects the quality of the film application.

[0006] Therefore, there is room for improvement in the existing screen protector technology for electronic devices. Utility Model Content

[0007] The technical problem solved by this disclosure is to provide a cleanroom with optimized positioning that improves the bonding effect, and a film application assembly having the cleanroom.

[0008] The technical solution adopted by this utility model to solve its technical problem is: a box-type cleanroom with optimized positioning, the cleanroom including a film applicator and a box body; the film applicator forms a accommodating space for placing the device to be applied, a positioning plate is provided at the front end of the accommodating space, the positioning plate is provided with a charging port positioning pin, positioning inserts are provided on both sides of the accommodating space, and the positioning plate and positioning inserts are provided with guide posts for fixing the protective film above the accommodating space; the film applicator is disposed inside the box body, the box body can be opened to expose the film applicator, and the box body has a front movable piece, the front movable piece is provided with a flexible member, the front movable piece can be folded inward to support the protective film downward.

[0009] As described above, in the optimized positioning box-type cleanroom, the tops of the positioning plate and the positioning insert both protrude upwards to form the guide post.

[0010] As described above, in the optimized positioning box-type cleanroom, each of the guide pillars has a raised limiting barb formed on its outer side wall.

[0011] As described above, in the optimized positioning box-type cleanroom, the film applicator has a base plate, the front end of which extends upward to form the positioning plate, and the top of the positioning plate extends horizontally forward to form a support portion, on which the guide post is formed; two positioning inserts are detachably assembled on both sides of the rear end of the base plate, and the accommodating space is formed between the base plate, the positioning plate and the positioning inserts, with the rear end of the accommodating space being open.

[0012] As described above, in the optimized positioning box-type cleanroom, the front end of the base plate extends upward to form the positioning plate, and the top of the positioning plate extends horizontally forward to form a support portion, on which the guide post is formed.

[0013] As described above, in the optimized positioning box-type cleanroom, the inner walls of the positioning plate and the positioning insert are provided with inwardly protruding machine positioning posts.

[0014] As described above, in the optimized positioning box-type cleanroom, each of the film applicators is equipped with multiple sets of different positioning inserts to switch installations and adjust the size of the accommodating space.

[0015] As described above, in the optimized positioning box-type cleanroom, the positioning insert and the base plate are connected in a detachable manner using a combination structure of inlaid posts and inlaid holes.

[0016] As described above, the optimized positioning box-type cleanroom includes a back panel, and the film applicator is disposed on the back panel. The front movable piece is connected to the front end of the back panel, and the rear end of the back panel is connected to the rear movable piece. Both the front and rear movable pieces can be folded in the inward and outward directions to control the opening and closing of the box body. Flexible baffles are provided on both sides of the back panel.

[0017] As described above, in the optimized positioning box-type cleanroom, the bottom of the film applicator is provided with a spring that generates an upward elastic force.

[0018] A film application assembly includes a protective film, and the film application assembly further includes a cleanroom as described in any of the preceding claims, the protective film being assembled in the cleanroom, the protective film having a guide hole that engages with the guide post.

[0019] The beneficial effects of this disclosure are as follows: The improved cleanroom film applicator is protected by a housing. In addition to retaining the charging port positioning structure, the cleanroom housing adds a positioning structure that matches the film applicator. Multi-point contact constrains the translational and rotational degrees of freedom of the device, while guide posts are set to relatively fix the protective film, effectively ensuring the stability of the relative position between the device to be applicated and the protective film, significantly improving the positional accuracy during the applicator process. During applicator application, the front movable piece of the housing folds down, applying pressure to the front end of the protective film through flexible components, which helps ensure the orderly adhesion of the protective film to the device to be applicated, guides air exhaust, and avoids air entrapment. Attached Figure Description

[0020] Some specific embodiments of the present invention will now be described in detail by way of example and not limitation, with reference to the accompanying drawings, in which the same reference numerals designate the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0021] In the attached image:

[0022] Figure 1 This is a schematic diagram of an embodiment of the dust-free chamber of this utility model;

[0023] Figure 2 This is a schematic diagram of the film applicator in the cleanroom of this utility model;

[0024] Figure 3 This is a schematic diagram of the positioning insert in the cleanroom of this utility model;

[0025] Figure 4 This is an exploded view of the film-applying assembly in use.

[0026] The markings in the image are explained as follows:

[0027] 1. Cleanroom; 2. Film applicator; 20. Positioning plate; 200. Supporting part; 21. Base plate; 22. Positioning insert; 23. Charging port positioning pin; 24. Machine positioning post; 25. Guide post; 250. Limiting hook; 26. Spring; 27. Inlay post; 28. Inlay hole; 3. Box body; 30. Back plate; 31. Front movable piece; 310. Flexible part; 32. Rear movable piece; 33. Flexible baffle; 4. Equipment; 5. Traction strip; 6. AB glue protective film; 7. AB glue; 8. Tempered glass; 9. Top protective piece; 90. Guide hole. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0029] Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by those skilled in the art to which this utility model pertains.

[0030] The terms “first,” “second,” and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a,” “one,” or “the” do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including” or “contains” mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. The terms “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0031] See appendix Figure 1-3 The image shows a positioning-optimized box-type cleanroom. The cleanroom 1 includes a film applicator 2 and a box body 3. The film applicator 2 forms a receiving space for placing a device 4 to be applied. A positioning plate 20 is provided at the front end of the receiving space. The positioning plate 20 is provided with a charging port positioning pin 23. Positioning inserts 22 are provided on both sides of the receiving space. The positioning plate 20 and the positioning inserts 22 are provided with guide posts 25 to fix the protective film above the receiving space. The film applicator 2 is disposed inside the box body 3. The box body 3 can be opened to expose the film applicator 2. The box body 3 has a front movable piece 31. A flexible member 310 is provided on the front movable piece 31. The front movable piece 31 can be folded inward to support the protective film downward.

[0032] The box-type cleanroom 1 in this embodiment mainly consists of two parts: a screen protector applicator 2 and a box body 3. The overall structure is roughly square. When the box body 3 is closed, it effectively protects the screen protector applicator 2 installed inside, reducing the entry of dust and other impurities. When open, the screen protector applicator 2 is exposed, allowing for screen protector application. The central space of the screen protector applicator 2 is used to place the device 4 to be screen protected, and it is compatible with the screens of mainstream electronic devices 4, ensuring that the device 4 does not wobble after being placed inside.

[0033] See appendix Figure 4The operation process of this embodiment is summarized in the structure of the protective film. The protective film consists of an upper protective sheet 9, tempered glass 8, AB glue 7, and AB glue protective film 6 from top to bottom. The front end of the AB glue protective film 6 is connected to a traction strip 5.

[0034] Open the box 3 and place the device 4 (such as a tablet or mobile phone) to be applied with the screen facing up into the receiving space of the screen protector 2. The charging port of the device 4 engages with the charging port positioning pin on the positioning plate 20. At the same time, the front end of the device 4 abuts against the positioning plate 20, and the two sides of the device 4 abut against and fit against the positioning inserts 22 respectively, thus completing the positioning of the device 4. At this time, the device 4 has basically no freedom of translation or rotation within the receiving space.

[0035] Place the appropriate protective film above the screen. The upper protective film 9 has multiple guide holes 90. Each guide hole 90 is inserted into the corresponding guide post 25. At this time, the protective film is fixed by the guide post 25, and its tempered glass 8 edge is aligned with the edge of the device 4 screen.

[0036] Holding the pull strip 5 at the front end of the protective film (located at the exposed end of the AB adhesive protective film 6), slowly pull it backward in a horizontal direction to peel the AB adhesive protective film 6 from the surface of the AB adhesive 7. While peeling off the AB adhesive protective film 6, it can also attract and remove dust from the screen. Simultaneously, pull the pull strip 5 and fold the front movable piece 31 of the box body 3 inward toward the film applicator 2, so that the flexible part 310 presses downward against the front end area of ​​the protective film. Applying appropriate force, the front end of the tempered glass 8, under the pressure of the flexible part 310, adheres to the front end of the device 4 screen through the AB adhesive 7. The flexible part 310 is elongated and can be made of sponge.

[0037] As the traction strip 5 continues to pull, the AB adhesive protective film 6 is gradually peeled off from front to back. Under the adhesive effect of the AB adhesive 7 and the auxiliary pressure of the flexible part 310, the tempered glass 8 is sequentially bonded to the screen of the device 4 from front to back. During this process, the user can slide their finger across the protective film from front to back to guide air out, allowing air bubbles to naturally dissipate along the bonding direction. After bonding is complete, flip open the front movable piece 31 and remove the upper protective piece 9 to complete the film application operation.

[0038] This embodiment ensures the relative position stability between the device 4 and the protective film through multi-dimensional positioning of the positioning plate 20 and positioning insert 22 and precise constraint of the guide post 25; in conjunction with the pressure applied by the flexible part 310 of the front movable piece 31, the tempered glass 8 is orderly bonded from front to back, effectively avoiding the problems of offset, air bubbles and random air release during the bonding process, and significantly improving the efficiency and quality of film application.

[0039] In some embodiments, the tops of the positioning plate 20 and the positioning insert 22 are partially raised upwards to form the guide post 25. The guide post 25 is formed by the tops of the positioning plate 20 and the positioning insert 22 being raised integrally, which reduces the assembly error of the parts.

[0040] In some embodiments, the outer side wall of each guide post 25 is formed with a protruding limiting barb 250. In this embodiment, the top of the positioning plate 20 of the film applicator 2 and each positioning insert 22 protrudes upward to form a guide post 25, and the outer side wall of each guide post 25 is integrally formed with a limiting barb 250; the edge of the upper protective film 9 has a positioning hole pre-set to match the guide post 25.

[0041] When the protective film is placed on the applicator 2, after the positioning hole is aligned with the top of the guide post 25, the protective film is gently pressed. Due to its own toughness, the edge of the positioning hole is slightly opened and slides along the inclined surface (or arc surface) of the limiting barb 250 on the outer wall of the guide post 25, smoothly passing over the limiting barb 250, thus achieving the insertion and engagement of the positioning hole and the positioning post. When the positioning hole is fully inserted into the guide post 25, its edge is located below the limiting barb 250. The limiting barb 250 and the edge of the positioning hole form an axial barrier, preventing the protective film from detaching axially upward along the guide post 25.

[0042] During the film application process, once the protective film is inserted into the guide post 25 through the positioning hole, the limiting hook 250 immediately engages to prevent the protective film from shifting or falling off due to slight contact, ensuring initial positioning accuracy. When the traction strip is pulled, the peeling force between the AB adhesive protective film 6 and AB adhesive 7 generates an upward pull on the overall protective film. At this time, the limiting action of the hook can counteract this pull, preventing the protective film from moving upward along the guide post 25 and ensuring the relative position stability between the tempered glass 8 and the screen of the device 4. When the flexible part 310 of the front movable piece 31 presses downward against the protective film, it generates local downward pressure, which may cause the edge of the protective film to curl upward. The tight fit between the limiting hook 250 and the positioning hole can restrain the curling tendency of the protective film edge, preventing it from detaching from the guide post 25. Therefore, the setting of the limiting hook 250 provides axial constraint for the positioning of the protective film, and works synergistically with the radial positioning of the guide post 25, greatly improving the reliability of the film application operation.

[0043] The base plate 21 can be injection molded, and the whole piece is attached. Figure 1-2 The X-shape shown is sized to fit the film applicator 4 and can form anti-slip textures to enhance friction and prevent the device 4 from slipping when placed. The base plate 21 serves as the basic support structure for the film applicator 2. It works with the positioning plate 20 and the positioning insert 22 to form an open-top receiving space, through which the device 4 is placed downwards.

[0044] The positioning plate 20 extends vertically upward from the front edge of the base plate 21 and is integrally injection molded with the base plate 21. Its inner sidewall is attached to the front end of the device 4 to be coated, serving a positioning function. A charging port positioning pin 23 adapted to the charging port of the device 4 is provided in the middle of the positioning plate 20, which is inserted and cooperates with the charging port of the device 4 to achieve precise positioning.

[0045] The top of the positioning plate 20 extends forward in the horizontal direction. The support part 200 is vertically connected to the positioning plate 20. The support part 200 protrudes upward to form a guide post 25 that is higher than its surface. The two guide posts 25 are located on both sides of the charging port positioning pin 23. The outer side wall of the guide post 25 is provided with a limiting barb 250 for positioning and constraining the front end position of the protective film.

[0046] After the film application device 4 is placed into the receiving space from top to bottom, its front end is fixed by the positioning plate 20 and the charging port, and its sides are defined by the positioning inserts 22. The rear edge of the screen of the device 4 corresponds to the rear end of the receiving space, and the protective film is positioned by the support part 200 and the guide post 25 on the positioning insert 22. The traction strip 5 of the protective film extends from the rear end of the screen of the device 4 to the outside of the opening. When the traction strip 5 is pulled, it can move backward along the opening. The pulling path is free of structural interference, ensuring smooth peeling of the AB glue protective film 6.

[0047] The integrated structure of the base plate 21 and the positioning plate 20 enhances the stability of the front-end positioning. The detachable design of the positioning insert 22 improves the compatibility of the equipment 4. The rear opening provides ample operating space for the pulling of the traction strip 5 and the peeling of the AB adhesive protective film 6. The three work together to further optimize the convenience and positioning accuracy of the film application operation.

[0048] In some embodiments, the inner sidewalls of the positioning plate 20 and the positioning insert 22 are provided with inwardly protruding machine positioning posts 24. In this embodiment, the inner sidewalls (i.e., the sidewalls facing the accommodating space) of the positioning plate 20 and the positioning insert 22 are provided with inwardly protruding machine positioning posts 24, which are used to directly abut against the outer sidewall of the device 4 to be coated (such as a tablet or mobile phone), and form a multi-dimensional positioning constraint in conjunction with the charging port positioning pin 23.

[0049] In some embodiments, a single applicator 2 is equipped with multiple sets of different positioning inserts 22 to switch installations to achieve adjustment of the accommodating space size.

[0050] In this embodiment, a single screen protector 2 is equipped with three sets of positioning inserts 22 of different specifications. Each set includes two symmetrical inserts on the left and right. The main structure of each set of inserts is the same, and its cross-section is generally L-shaped. The horizontal part is used to connect with the base plate 21, and the vertical part is used to restrict and fix the device 4. The key dimensions of each set of positioning inserts 22 are different to adapt to devices 4 with different widths to be screen protectors. For example, the three sets of positioning inserts 22 are adapted to devices 4 with screens of 5.5 inches, 6.1 inches and 6.7 inches respectively. When it is necessary to apply a screen protector to the corresponding device 4, the user can install the corresponding insert on the base plate 21.

[0051] In some embodiments, the positioning insert 22 and the base plate 21 are detachably connected by a mating structure of insert posts 27 and insert holes 28.

[0052] In this embodiment, the positioning insert 22 and the base plate 21 are detachably connected by fitting insert posts 27 and insert holes 28. The positioning insert 22 is L-shaped, with insert holes 28 provided in its horizontal portion. The base plate 21 has upwardly protruding insert posts 27. The insert holes 28 are fitted along the insert posts 27, thus assembling the positioning insert 22 and the base plate 21. Alternatively, the positioning insert 22 can have insert posts 27 in its horizontal portion, and the base plate 21 can have corresponding insert holes 28. The insert posts 27 can be cylindrical, elliptical, prismatic, or other shapes, which fit into the corresponding shaped insert holes 28. This allows for quick assembly and disassembly while ensuring connection strength, improving the replacement efficiency of the positioning insert 22, and further optimizing the device 4 compatibility of the applicator 2.

[0053] In some embodiments, the box body 3 includes a back plate 30, and the film applicator 2 is disposed on the back plate 30; the front movable piece 31 is connected to the front end of the back plate 30, and the rear end of the back plate 30 is connected to the rear movable piece 32. Both the front movable piece 31 and the rear movable piece 32 can be folded in the inward and outward directions to control the opening and closing of the box body 3, and flexible baffles 33 are provided on both sides of the back plate 30.

[0054] The back panel 30, serving as the basic load-bearing structure of the box body 3, is generally square in shape with a flat surface, allowing the applicator 2 to be adhered and fixed to its surface. The front movable piece 31 and the rear movable piece 32 are foldable and connected to the front and rear ends of the back panel 30, respectively. The front movable piece 31 folds outward to 180° (at a flat angle to the plane of the back panel 30) through its connection with the back panel 30, and the rear movable piece 32 folds outward to 180° through its connection with the back panel 30. At this point, both are fully extended, exposing the applicator 2 completely. The rear opening of the accommodating space does not interfere with the unfolding direction of the rear movable piece 32, allowing for smooth pulling of the traction strip 5. The front movable piece 31 and the rear movable piece 32 fold inward to 180°, covering the back panel 30. Supported by the connection, the front movable piece 31, the rear movable piece 32, and the back panel 30 form a cavity for accommodating the applicator 2.

[0055] When applying the screen protector, the case 3 can be opened first to insert the device 4 and the screen protector. During the application process, the front movable piece 31 is folded inward to abut against the screen protector, so that the flexible part 310 contacts the screen protector and applies downward pressure, which helps the tempered glass 8 adhere to the screen and guides the airflow to the rear. The flexible baffles 33 on both sides of the case 3 can be made of rigid sponge to enhance the sealing of the case 3 and prevent items (such as the screen protector) from falling out.

[0056] In some embodiments, the bottom of the applicator 2 is provided with a spring piece 26 that generates an upward elastic force.

[0057] Specifically, the springs 26 can be made of stainless steel. Two springs 26 are set on both sides of the front of the base plate 21. The springs 26 generate an upward elastic force on the bottom of the device 4 to be coated, which enhances the bonding pressure between the device 4 and the protective film above. This forms a synergistic force system with the positioning structure and the pressure of the flexible part 310, which not only ensures the stable positioning of the device 4, but also enhances the tightness of the bonding between the device 4 and the protective film. It also assists the AB glue 7 in efficiently venting air and evenly pasting, further improving the flatness and yield of the coated film.

[0058] See appendix Figure 4 A film-applying assembly is provided, including a protective film. The assembly further includes a cleanroom chamber 1 as described in any of the preceding claims. The protective film is fitted into the cleanroom chamber 1. The protective film has a guide hole 90, which engages with a guide post 25. The protective film and cleanroom chamber 1 can be sold as a set for user convenience. When applying the film, the user can first remove the protective film, place the device 4 to be applied into the cleanroom chamber 1, and then reassemble the protective film for application. Simultaneously, the surface of the box 3 can be optimized for an aesthetic design, achieving the effect of a packaging box.

[0059] In summary, the optimized box-type cleanroom 1 improves the accuracy and compatibility of film application through multi-dimensional structural design. The front of the film applicator 2's accommodating space features a positioning plate 20 with a charging port positioning pin 23, and detachable positioning inserts 22 on both sides. Combined with guide posts 25 (with limiting hooks 250), precise positioning of the device 4 and the protective film is achieved. The positioning inserts 22 and the base plate 21 are quickly replaced via insert posts 27 and insert holes 28, and multiple sets of inserts of different specifications are provided to adjust the accommodating space size to adapt to various devices 4. The box body 3 features foldable front / rear movable pieces 32 (the front movable piece 31 with a flexible part 310) and flexible baffles 33 on both sides, facilitating operation and enhancing sealing. The spring piece 26 at the bottom of the film applicator 2 provides upward elasticity, which, in conjunction with the downward pressure of the front movable piece 31, promotes orderly adhesion between the protective film and the device 4 screen. This comprehensively solves the problems of unstable positioning, adhesion deviation, and low compatibility in traditional film application, balancing ease of operation and film application effect.

[0060] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, this utility model can have various modifications, combinations, and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A positioning-optimized cassette-type cleanroom, characterized in that: The cleanroom includes a film applicator and a box body; The film applicator has a accommodating space for placing the device to be applied. A positioning plate is provided at the front end of the accommodating space. The positioning plate is provided with a charging port positioning pin. Positioning inserts are provided on both sides of the accommodating space. The positioning plate and positioning inserts are provided with guide posts to fix the protective film above the accommodating space. The film applicator is disposed inside the box body, which can be opened to expose the film applicator. The box body has a front movable piece with a flexible element. The front movable piece can be folded inward to support the protective film downward.

2. The positioning-optimized cassette-type cleanroom as described in claim 1, characterized in that: The top of both the positioning plate and the positioning insert protrudes upwards to form the guide post.

3. The positioning-optimized cassette-type cleanroom as described in claim 2, characterized in that: Each of the guide posts has a protruding limiting barb formed on its outer side wall.

4. The positioning-optimized cassette-type cleanroom as described in claim 2, characterized in that: The film applicator has a base plate, the front end of which extends upward to form the positioning plate, and the top of the positioning plate extends horizontally forward to form a support portion, on which the guide post is formed; The two positioning inserts are detachably assembled on both sides of the rear end of the base plate. The accommodating space is formed between the base plate, the positioning plate, and the positioning inserts. The rear end of the accommodating space is open.

5. The positioning-optimized cassette-type cleanroom as described in claim 4, characterized in that: The inner walls of both the positioning plate and the positioning insert are provided with inwardly protruding machine positioning posts.

6. The positioning-optimized cassette-type cleanroom as described in claim 4, characterized in that: Each of the film applicators is equipped with multiple sets of different positioning inserts to switch installations to achieve adjustment of the accommodating space size.

7. The positioning-optimized cassette-type cleanroom as described in claim 4, characterized in that: The positioning insert and the base plate are connected in a detachable manner by means of an inlay post and an inlay hole.

8. The positioning-optimized cassette-type cleanroom as described in claim 1, characterized in that: The box body includes a back panel, and the film applicator is disposed on the back panel; The front movable piece is connected to the front end of the back plate, and the rear end of the back plate is connected to the rear movable piece. Both the front and rear movable pieces can be folded in the inward and outward directions to control the opening and closing of the box body. Flexible baffles are provided on both sides of the back plate.

9. The positioning-optimized cassette-type cleanroom as described in claim 1, characterized in that: The bottom of the applicator is equipped with a spring that generates an upward elastic force.

10. A film-applying assembly, including a protective film, characterized in that: The film-applying assembly further includes a cleanroom as described in any one of claims 1-9, wherein the protective film is assembled in the cleanroom, the protective film has a guide hole, and the guide hole is connected to the guide post.

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