Book type mobile phone film pasting box
By concealing the strip handle and using a three-dimensional positioning structure, the design solves the pollution and appearance problems caused by exposed handles, achieving efficient membrane protection and precise adhesion.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN PUFEI INNOVATION TECH CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-04-21
AI Technical Summary
In existing book-style mobile phone screen protector cases, the exposed strip handle can easily lead to accidental detachment or oil stains, affecting the cleanliness of the screen protector and compromising the overall appearance of the case.
Design a book-style mobile phone screen protector box. The strip handle of the release film is folded in half and inserted into the card slot for concealment. When in use, it is exposed through the second through slot, making it easy to tear off the release film by hand. The three-dimensional positioning structure of the film receiving slot, positioning hole and card slot ensures that the protective film is aligned with the mobile phone screen.
It effectively prevents the handle from being contaminated or damaged during transportation or carrying, improves protective performance, and ensures accurate alignment and high-quality application during the film application process.
Smart Images

Figure CN224146311U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of mobile phone screen protectors, and more specifically, to a book-style mobile phone screen protector box. Background Technology
[0002] A screen protector box is a device specifically designed to assist users in accurately applying screen protectors. Its core function is to secure the phone and screen protector components through structural design, simplifying the alignment, dust removal, and air venting processes required in traditional manual screen protector application. This device typically employs a pre-packaged design, integrating the screen protector, positioning frame, and cleaning tools into the box, aiming to lower the barrier to entry for screen protector application and improve yield rates.
[0003] Most mainstream mobile phone screen protector cases currently use a book-style folding structure, which includes a case body and a film component positioning system. The case body consists of a rigid upper cover and a lower cover connected by hinges. When unfolded, it forms a flat working area, and when closed, it can store the protective film component and accessories. The lower cover has a positioning groove that matches the size of the mobile phone for positioning the phone; the upper cover has a corresponding position for the protective film component with a release film. The film is pre-aligned with the application position through an adhesive layer. The protective film component includes a release film, and the edge of the release film extends into a strip-shaped handle. The strip-shaped handle and the release film are usually made of PET film. When the user peels off the release film, they need to pull the handle to separate the film from the base film.
[0004] Although book-style screen protector boxes have significantly improved the screen protector application experience, in order to remove the release film, the strip handle is usually set to protrude at least 5-15mm from the edge of the box, which leads to the following technical problems: During transportation or carrying, the exposed handle is prone to friction with other items in the bag, which can easily cause the handle to detach accidentally or get oily, affecting the cleanliness of the film; the external handle disrupts the overall appearance of the box. Utility Model Content
[0005] In order to solve the problem that in related technologies, strip handles are usually set to protrude from the edge of the box, which can easily cause the handle to detach accidentally or get dirty with oil, affecting the cleanliness of the film and damaging the overall appearance of the box, this application provides a book-style mobile phone screen protector box.
[0006] A book-style mobile phone screen protector box includes a top page, a bottom page, a spine, and a film assembly. The top page and the bottom page are connected by the spine and can be flipped around the spine towards each other. A top cover is fixed to the inner side of the top page, and a bottom cover is fixed to the inner side of the bottom page. The top surface of the bottom cover has a positioning groove that matches the outer contour and size of the mobile phone, and the bottom surface of the top cover has a fitting groove that matches the outer contour and size of the bottom cover. The film assembly includes a positioning film, a protective film, and a release film. The protective film is attached to one side of the positioning film, and the release film is attached to the side of the protective film away from the positioning film. The positioning film includes an attachment part that matches the size and shape of the protective film, and positioning parts and support parts respectively disposed at both ends of the attachment part. The bottom surface of the top cover also has a film receiving groove recessed in the fitting groove, and the contour and size of the film receiving groove match the positioning film. The upper cover has a first through groove at one end of the attaching portion of the positioning film. The first through groove is connected to the film receiving groove for accommodating the positioning portion of the positioning film. The upper cover has a film positioning structure on the bottom surface of the first through groove for positioning the positioning portion of the positioning film. The upper cover has a slot on the end wall of the film receiving groove away from the first through groove. The support portion of the positioning film passes through the slot. The release film has a strip handle at one end near the positioning portion of the positioning film. The strip handle is folded towards the side of the release film away from the protective film and extends to the opposite end of the release film. The end of the strip handle has a grip portion. The grip portion of the strip handle is folded in half and inserted into the slot. The upper cover has a second through groove at the end of the film receiving groove away from the first through groove for the strip handle to pass through.
[0007] Preferably, the upper cover has a raised strip at one end of the bottom surface of the membrane receiving groove near the slot, and the length of the raised strip extends along the width direction of the membrane receiving groove.
[0008] Preferably, the positioning film and the release film are both PET films, and the protective film is a tempered glass film.
[0009] Preferably, the membrane positioning structure includes a first positioning protrusion, a second positioning protrusion, and a third positioning protrusion. The second positioning protrusion and the third positioning protrusion are located on the side of the first positioning protrusion away from the membrane receiving groove, and the second positioning protrusion and the third positioning protrusion are arranged at intervals along the width direction of the membrane receiving groove. The positioning part of the positioning membrane is provided with a first positioning hole, a second positioning hole, and a third positioning hole. The first positioning hole is used for the first positioning protrusion to pass through, the second positioning hole is used for the second positioning protrusion to pass through, and the third positioning hole is used for the third positioning protrusion to pass through. The dimensions of the first positioning hole, the second positioning hole, and the third positioning hole are respectively matched with the dimensions of the first positioning protrusion, the second positioning protrusion, and the third positioning protrusion.
[0010] Preferably, both the upper cover and the lower cover are made of plastic, and the upper cover has a locking block protruding from the inner peripheral wall of the fitting groove, while the lower cover has a buckle groove on the outer peripheral wall that matches the shape and size of the locking block.
[0011] Preferably, the outer periphery of the lower cover has slots on both opposite side walls, and both slots are connected to the positioning slot and penetrate the top surface of the lower cover, with the two slots being aligned.
[0012] Preferably, the upper page and the upper cover together have a bubble-pressing groove that penetrates both of them and communicates with the membrane receiving groove.
[0013] The beneficial technical effects of this application are as follows: By folding the strip-shaped handle of the release film in half and inserting it into the slot, the strip-shaped handle can be hidden when not in use, preventing contamination or damage to the handle due to friction or squeezing during transportation or carrying, thus significantly improving protective performance. The second through-slot allows the strip-shaped handle to extend through the top cover when in use, making it easy for a person to grip and pull the strip-shaped handle to tear the release film. Furthermore, the film receiving slot precisely matches and positions the film attachment part. Combined with the film positioning structure in the first through-slot fixing the positioning part, and the snap-fit between the support part and the slot, full constraint positioning of the film assembly in three dimensions is achieved, ensuring alignment between the protective film and the mobile phone screen. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of a book-style mobile phone screen protector box according to this embodiment.
[0015] Figure 2 This is a schematic diagram of the membrane module in this embodiment.
[0016] Figure 3 This is a schematic diagram of the lower cover structure in this embodiment.
[0017] Figure 4 This is a schematic diagram of the upper cover structure in this embodiment.
[0018] Reference numerals: 1. Previous page; 2. Next page; 3. Ridge; 4. Membrane assembly; 41. Positioning film; 411. Attachment part; 412. Positioning part; 4121. First positioning hole; 4122. Second positioning hole; 4123. Third positioning hole; 413. Support part; 42. Protective film; 43. Release film; 431. Strip handle; 4311. Grip part; 5. Top cover; 51. Fitting groove; 52. Membrane receiving groove; 53. First through groove; 54. Slot; 55. Second through groove; 56. Membrane positioning structure; 561. First positioning protrusion; 562. Second positioning protrusion; 563. Third positioning protrusion; 57. Locking block; 58. Protrusion strip; 6. Bottom cover; 61. Positioning groove; 62. Fastening groove; 63. Slot; 7. Bubble pressing groove. Detailed Implementation
[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0020] Reference Figure 1 A book-style mobile phone screen protector box includes an upper page 1, a lower page 2, a spine 3, and a film assembly 4. The upper page 1, lower page 2, and spine 3 are formed by rigid cardboard. Specifically, two parallel and spaced V-shaped grooves are cut along the width of the rectangular rigid cardboard. The spine 3 is located between the two V-shaped grooves. The upper page 1 is on one side of the spine 3, and the lower page 2 is on the other side. The upper page 1 and lower page 2 can be flipped around the spine 3 by reducing the thickness of the rigid cardboard through the V-shaped grooves.
[0021] Reference Figure 1 and Figure 3 The inner side of the upper page 1 is fixed with an upper cover 5, and the inner side of the lower page 2 is fixed with a lower cover 6. Both the upper cover 5 and the lower cover 6 are made of plastic. The upper cover 5 is fixed to the upper page 1 by adhesive, and the lower cover 6 is fixed to the lower page 2 by adhesive. The lower cover 6 is rectangular, and the four corners of the upper cover 5 are rounded. The bottom surface of the lower cover 6 is recessed with a positioning groove 61 that matches the outer contour and size of the mobile phone. By placing the mobile phone in the positioning groove 61, the mobile phone is positioned and its movement is limited. The bottom surface of the upper cover 5 is recessed with a fitting groove 51 that matches the outer contour and size of the lower cover 6. By flipping the upper page 1 and the lower page 2 towards each other, the lower cover 6 is fitted onto the upper cover 5 through the fitting groove 51. The upper cover 5 and the lower cover 6 are closed, forming a dustproof cavity between the upper cover 5 and the lower cover 6. This reduces dust adhesion to the mobile phone screen during the screen protector application process and avoids affecting the quality of the screen protector application.
[0022] Reference Figure 1 , Figure 2 and Figure 4The membrane assembly 4 includes a positioning film 41, a protective film 42, and a release film 43. The positioning film 41 and release film 43 are both PET films, and the protective film 42 is a tempered glass film. The protective film 42 is attached to one side of the positioning film 41 via an adhesive layer, and the release film 43 is attached to the side of the protective film 42 away from the positioning film 41 via an adhesive layer. The positioning film 41 includes an attachment portion 411 that matches the size and shape of the protective film 42, and positioning portions 412 and support portions 413 respectively disposed at both ends of the attachment portion 411. The upper cover 5... The bottom surface of the fitting groove 51 is also recessed with a membrane receiving groove 52. One end of the upper cover 5 is also provided with a first through groove 53, which connects to the membrane receiving groove 52 and extends downwards through the bottom surface of the upper cover 5. The upper cover 5 has a retaining groove 54 and a second through groove 55 on the end wall of the membrane receiving groove 52 away from the first through groove 53. The second through groove 55 is located below the retaining groove 54 and penetrates the end wall of the upper cover 5, extending downwards through the bottom surface of the upper cover 5. The outline and size of the membrane receiving groove 52 match the positioning membrane 41. The attaching part 411 of the positioning film 41 is positioned within the film receiving groove 52. The positioning part 412 of the positioning film 41 is received within the first through groove 53. A film positioning structure 56 is provided on the bottom surface of the first through groove 53 of the upper cover 5. The positioning part 412 of the positioning film 41 is positioned by the film positioning structure 56. The supporting part 413 of the positioning film 41 is inserted into the slot 54. The film receiving groove 52 precisely matches the attaching part 411 of the positioning film 41, and the film positioning structure 56 in the first through groove 53 is used to position the positioning part 412 of the positioning film 41. The fixing of the positioning part 412 and the engagement of the support part 413 with the slot 54 achieve full constraint positioning of the film assembly 4 in three dimensions, so that the lower cover 6 and the upper cover 5 are closed. When the lower cover 6 is inserted into the fitting groove 51 of the upper cover 5, the protective film 42 is aligned with the mobile phone screen, which facilitates accurate film application. When the mobile phone is placed in the positioning groove 61, the mobile phone screen is designed to be higher than the lower cover 6. When the lower cover 6 and the upper cover 5 are closed, the mobile phone screen is inserted into the film receiving groove 52 and contacts the film assembly 4 for film application.
[0023] Reference Figure 1 , Figure 2 and Figure 4A strip handle 431 is provided at one end of the release film 43 near the positioning part 412 of the positioning film 41. The strip handle 431 is folded towards the side of the release film 43 away from the protective film 42 and extends towards the opposite end of the release film 43. A grip part 4311 is also provided at the end of the strip handle 431. After the grip part 4311 of the strip handle 431 is folded in half, it is inserted into the slot 54. The slot 54 hides the strip handle 431, so that when not in use, such as during the transportation and carrying of the film box, the hidden strip handle 431 is less likely to rub against other items in the packaging bag and accidentally detach, causing the release film 43 to tear prematurely. It is also less likely to be contaminated with oil, so that oil will not contaminate the entire film assembly 4 through the strip handle 431. At the same time, the hidden strip handle 431 makes the overall appearance of the film box highly integrated. When in use, by unfolding the gripping part 4311 of the strip handle 431 and passing through the second through slot 55 through the upper cover 5 to form a dustproof cavity between the upper cover 5 and the lower cover 6, the human hand can peel off the release film 43 by gripping the gripping part 4311 of the strip handle 431, so that the protective film 42 can contact the mobile phone screen and adhere to the mobile phone screen.
[0024] Reference Figure 1 , Figure 2 and Figure 4 Furthermore, the membrane positioning structure 56 includes a first positioning protrusion 561, a second positioning protrusion 562, and a third positioning protrusion 563. The second positioning protrusion 562 and the third positioning protrusion 563 are located on the side of the first positioning protrusion 561 away from the membrane receiving groove 52, and the second positioning protrusion 562 and the third positioning protrusion 563 are arranged at intervals along the width direction of the membrane receiving groove 52. The positioning part 412 of the positioning membrane 41 is provided with a first positioning hole 4121, a second positioning hole 4122, and a third positioning hole 4123. The first positioning hole 4121 is used for the first positioning protrusion 561 to pass through, the second positioning hole 4122 is used for the second positioning protrusion 562 to pass through, and the third positioning hole 4123 is used for the second positioning protrusion 562 to pass through. Hole 4123 is used for the third positioning protrusion 563 to pass through, and the dimensions of the first positioning hole 4121, the second positioning hole 4122, and the third positioning hole 4123 are respectively matched with the dimensions of the first positioning protrusion 561, the second positioning protrusion 562, and the third positioning protrusion 563, so as to further position the positioning film 41. The top peripheral walls of the first positioning protrusion 561, the second positioning protrusion 562, and the third positioning protrusion 563 are all provided with barbs, which support the positioning part 412 of the positioning film 41. The positioning part 41 of the positioning film 41 uses the flexible deformation property of PET to allow the positioning hole to pass into the positioning protrusion with barbs.
[0025] Reference Figure 4Furthermore, the top cover 5 has a protruding strip 58 on the bottom surface of the film receiving groove 52 near the card slot 54. The length of the protruding strip 58 extends along the width direction of the film receiving groove 52. The protruding strip 58 supports the film assembly 4, making the film assembly 4 tilted relative to the mobile phone screen. When the film is tilted and applied, one edge of the protective film 42 contacts the screen first. Through the adhesion of the adhesive layer, the protective film 42 is gradually attached to the mobile phone screen. Air will naturally be discharged from the contact point to the unattached area, reducing the probability of air being "sealed" in the film and ensuring the quality of the film application.
[0026] Reference Figure 3 and Figure 4 Furthermore, the upper cover 5 has a locking block 57 protruding from the inner peripheral wall of the fitting groove 51, and the lower cover 6 has a buckle groove 62 that matches the shape and size of the locking block 57 on the outer peripheral wall. The protrusion height of the locking block 57 is 1-3mm, and its surface is arc-shaped. Through the deformation ability of the plastic, when the upper cover 5 and the lower cover 6 are closed, the locking block 57 is inserted into the buckle groove 62, and the upper cover 5 and the lower cover 6 are fixed together. This makes it difficult for the upper cover 5 and the lower cover 6 to open and cause the film assembly 4 to fall off during transportation or carrying of the film box.
[0027] Reference Figure 3 Furthermore, slots 63 are provided on both sides of the outer periphery of the lower cover 6. Both slots 63 are connected to the positioning slots 61 and penetrate the top surface of the lower cover 6. The two slots 63 are aligned, and the two slots 63 facilitate the insertion of human fingers into the positioning slots 61 to hold the mobile phone and pull it out of the positioning slots 61.
[0028] Reference Figure 1 Furthermore, the upper page 1 and the upper cover 5 are both provided with a bubble-pressing groove 7 that runs through both of them and connects to the film receiving groove 52. The bubble-pressing groove 7 allows for observation of the film application status during the application process. When there are residual air bubbles in the film, the fingers can be inserted into the film receiving groove 52 through the bubble-pressing groove 7 to press the protective film 42, thereby expelling the air bubbles between the protective film 42 and the mobile phone screen and ensuring the film application effect.
[0029] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A book-shaped mobile phone screen protector box, characterized in that: The device includes a top page, a bottom page, a spine, and a membrane assembly. The top page and the bottom page are connected by the spine and can flip around the spine towards each other. A top cover is fixed to the inner side of the top page, and a bottom cover is fixed to the inner side of the bottom page. The top surface of the bottom cover has a positioning groove that matches the outer contour and size of the phone. The bottom surface of the top cover has a fitting groove that matches the outer contour and size of the bottom cover. The membrane assembly includes a positioning film, a protective film, and a release film. The protective film is attached to one side of the positioning film, and the release film is attached to the side of the protective film away from the positioning film. The positioning film includes an attachment part that matches the size and shape of the protective film, and positioning and support parts respectively disposed at both ends of the attachment part. The top cover also has a membrane receiving groove recessed on the bottom surface of the fitting groove, the contour and size of which match the attachment of the positioning film. The upper cover has a first through groove at one end, which connects to the film receiving groove for accommodating the positioning part of the positioning film. The upper cover has a film positioning structure on the bottom surface of the first through groove for positioning the positioning part of the positioning film. The upper cover has a slot on the end wall of the film receiving groove away from the first through groove, and the support part of the positioning film passes through the slot. The release film has a strip handle at one end near the positioning part of the positioning film. The strip handle is folded towards the side of the release film away from the protective film and extends to the opposite end of the release film. The end of the strip handle has a gripping part. The gripping part of the strip handle is folded in half and inserted into the slot. The upper cover has a second through groove at the end of the film receiving groove away from the first through groove for the strip handle to pass through.
2. The book-type mobile phone sticker case according to claim 1, characterized in that: The top cover has a raised strip on one end of the bottom surface of the membrane receiving groove near the slot, and the length of the raised strip extends along the width direction of the membrane receiving groove.
3. The book-type mobile phone sticker case according to claim 1, characterized in that: Both the positioning film and the release film are PET films, and the protective film is a tempered glass film.
4. The book-type mobile phone sticker case according to claim 3, characterized in that: The membrane positioning structure includes a first positioning protrusion, a second positioning protrusion, and a third positioning protrusion. The second positioning protrusion and the third positioning protrusion are located on the side of the first positioning protrusion away from the membrane receiving groove, and the second positioning protrusion and the third positioning protrusion are arranged at intervals along the width direction of the membrane receiving groove. The positioning part of the positioning membrane is provided with a first positioning hole, a second positioning hole, and a third positioning hole. The first positioning hole is used for the first positioning protrusion to pass through, the second positioning hole is used for the second positioning protrusion to pass through, and the third positioning hole is used for the third positioning protrusion to pass through. The dimensions of the first positioning hole, the second positioning hole, and the third positioning hole are respectively matched with the dimensions of the first positioning protrusion, the second positioning protrusion, and the third positioning protrusion.
5. The book-type mobile phone sticker case according to claim 1, characterized in that: Both the upper cover and the lower cover are made of plastic. The upper cover has a locking block protruding from the inner peripheral wall of the fitting groove, and the lower cover has a buckle groove matching the shape and size of the locking block on the outer peripheral wall.
6. The book-type mobile phone sticker case according to claim 1, characterized in that: The outer circumferential opposite two side walls of the lower cover are provided with grooves, and the two grooves are communicated with the positioning groove and penetrate the top surface of the lower cover.
7. The book-type mobile phone sticker case according to claim 1, characterized in that: The upper page and the upper cover are provided with a bubble pressing groove penetrating both of them and communicated with the film accommodating groove.