Film pasting device

Abstract

The film pasting device comprises a base and a film scraping device; a first convex column and a second convex column are arranged on the base, and are staggered front and back; the two first protruding columns are configured to be arranged below the rear ends of the two limiting protruding ribs from bottom to top and can rotate relative to the base so that the film scraping device can rotate between a first position located on the rear portion of the base and a second position located on the upper portion of the base. The two second protruding columns swing to the positions below the two limiting protruding ribs through the receding notches in the two limiting protruding ribs respectively, so that the first protruding columns, the second protruding columns and the limiting protruding ribs are matched to form a limiting mechanism for preventing the film scraping device from being separated from the base upwards. According to the utility model, the protective film can be conveniently mounted on the base, and the overall length of the base is shortened.

Description

Technical Field

[0001] This utility model relates to the field of terminal film application technology, specifically to a film application device. Background Technology

[0002] Most current mobile phones, tablets, and other terminal devices use touchscreens. To protect these touchscreens, protective films are usually applied to prevent scratches or breakage during use. Currently, film application devices are generally used as an auxiliary tool to address the alignment issues that arise when applying films manually. Existing film application devices typically use a base to position the terminal device and the protective film. A sliding film applicator mounted on the base presses the protective film onto the touchscreen. During operation, the terminal device is placed in the receiving slot of the base for positioning. The front and back ends of the protective film are then hooked onto the positioning components on the base. The protective layer at the bottom of the film is peeled off, and the film applicator is moved from one end of the touchscreen to the other. While existing screen protector application devices can accurately apply the protective film to the touchscreen, the squeegee is positioned above the base. This requires leaving some space at the rear of the base for the squeegee, so that when the squeegee is initially in the correct position, it is offset from the positioning component on the base that mates with the protective film by a certain distance along the length of the base. This is to prevent interference between the protective film and the squeegee during installation. As a result, the overall length of the screen protector base is relatively large, leading to material waste. Utility Model Content

[0003] The main purpose of this invention is to provide a film-applying device that avoids interference between the protective film and the scraper when installing the protective film, and ensures that the base of the film-applying device has a relatively small size to reduce material waste.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Film application device, including base and film scraper;

[0006] The base is provided with a receiving groove for accommodating and positioning the terminal device, a first positioning part and a second positioning part. The first positioning part and the second positioning part are located at the front end and the rear end of the base, respectively, and cooperate with the front end and the rear end of the protective film to position the protective film. The base is provided with front and rear extending limiting ribs on both sides, and the limiting ribs are provided with clearance notches extending from their top surface to their bottom surface.

[0007] A slide block is provided on each side of the film scraper. The two slide blocks are slidably mounted on the base so that the film scraper can slide relative to the base in the front-back direction. Each slide block is provided with a first protrusion and a second protrusion extending inward. The first protrusion and the second protrusion are staggered front to back. The two first protrusions are configured to be positioned below the rear ends of the two limiting ribs from bottom to top and can rotate relative to the base so that the film scraper can rotate between a first position located at the rear of the base and a second position located above the base. When the film scraper rotates from the first position to the second position, the two second protrusions swing to the bottom of the two limiting ribs through the avoidance notches on the two limiting ribs, so that the first protrusion, the second protrusion and the limiting ribs cooperate to form a limiting mechanism to prevent the film scraper from detaching from the base upward.

[0008] Preferably, the limiting rib is provided on the side of the base, and the outer side of the limiting rib protrudes from the side of the base so that the bottom surface of the limiting rib forms a limiting surface extending outward from the side of the base. When the scraper is in the second position, the first protrusion and the second protrusion are placed below the limiting surface.

[0009] Preferably, the slide includes a wall plate located outside the limiting rib, and the first protrusion and the second protrusion both extend inward from the inner side of the wall plate, the length of the second protrusion being less than the length of the first protrusion; the clearance notch is formed by the outer side of the limiting rib recessed towards the side of the base, and the depth of the clearance notch is less than the width of the limiting rib.

[0010] Preferably, a limiting stop rib is provided below the rear end of one of the limiting ribs, or limiting stop ribs are provided below the rear ends of both limiting ribs; the limiting stop rib and the limiting rib together form a groove with an opening facing forward for the first protrusion to be inserted, and the part inside the groove opposite to the opening forms a support surface, which is used to provide support for the first protrusion when it rotates in the groove to prevent the first protrusion from moving backward and downward relative to the limiting stop rib.

[0011] Preferably, a locking post protruding outward is provided on the base at a position below the rear end of the limiting rib. The inner end of the first protrusion is provided with a locking groove, which allows the locking post to be inserted into the locking groove so that the first protrusion and the locking post can pivotally engage, and can also be disengaged from the locking groove.

[0012] Preferably, the slide includes an outer wall and an inner wall located inside the outer wall, and a downward-facing groove is formed between the outer wall and the inner wall, with the limiting rib slidably embedded in the groove.

[0013] Preferably, a flexible extrusion roller is installed on the film scraper between two slides, with both ends of the flexible extrusion roller pivotally connected to the two slides respectively.

[0014] Preferably, the first positioning part includes a first support surface and two positioning posts extending upward from the first support surface. The two positioning posts are staggered along the width direction of the base and have different cross-sectional shapes.

[0015] Preferably, the bottom of the first positioning part forms a first support surface for supporting the front end of the lower surface of the protective film, and the bottom of the second positioning part forms a second support surface for supporting the rear end of the lower surface of the protective film, with the first support surface being higher than the second support surface.

[0016] Preferably, a crossbeam is provided at the rear of the base, and the second positioning part is a hook provided on the crossbeam.

[0017] Preferably, the upper surface of the crossbeam is provided with a downwardly recessed positioning groove that matches the shape of the rear end of the protective film to accommodate and position the rear end of the protective film. The bottom surface of the positioning groove forms a support plane for supporting the rear end of the protective film. The hook is connected to the support plane, and a hollow part is formed on the part of the crossbeam located below the hook.

[0018] Preferably, the base includes a frame around its perimeter, and each side of the frame has a positioning rib extending vertically inward, the inner edges of the multiple positioning ribs together defining a receiving groove on the base.

[0019] In this invention, by setting limiting ribs on the base and setting a first protrusion and a second protrusion on the film scraper, the film scraper can be assembled onto the base from the rear by flipping it forward. The film scraper will not obstruct the upper rear of the base, making it easy to install the protective film onto the base. There is no need to reserve a space at the rear of the base to avoid the second positioning part located at the rear of the base, which can shorten the overall length of the base and reduce material waste. When the film scraper is flipped to the second position, the film scraper can get closer to the rear edge of the protective film. During the process of the film scraper moving forward to press the protective film, the distance the film scraper moves is shorter, which improves the efficiency of film application. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 for Figure 1 Schematic diagram of the middle scraper;

[0023] Figure 3 for Figure 1 AA section view;

[0024] Figure 4 for Figure 1 Enlarged view at point B;

[0025] Figure 5 This is a schematic diagram of the flipping process of the scraper of this utility model;

[0026] Figure 6 A schematic diagram of the usage state of this utility model;

[0027] Figure 7 This is a schematic diagram of another usage state of the present invention;

[0028] Figure 8 This is a schematic diagram illustrating the interaction between the film application device of this utility model and a mobile phone and a protective film;

[0029] Figure 9 for Figure 8 CC section view.

[0030] 10. Base; 101. Side; 102. First support surface; 103. Second support surface; 11. Receiving groove; 120. First positioning part; 12. Positioning post; 13. Positioning post; 14. Second positioning part; 15. Limiting rib; 151. Avoidance notch; 152. Limiting surface; 16. Limiting stop rib; 160. Groove; 161. Opening; 162. Supporting surface; 163. Locking post; 17. Crossbeam; 171. Positioning groove; 172. Hollowed-out part; 18. Positioning rib; 20. Film scraper; 21. Slide; 211. Wall panel; 212. Inner side wall; 213. Slide groove; 22. First protruding post; 221. Locking groove; 23. Second protruding post; 24. Flexible extrusion roller; 30. Mobile phone; 40. Protective film.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] like Figure 1-9The image shows a screen protector application device according to this utility model, specifically a screen protector application device suitable for mobile phones. It includes a base 10 and a screen protector applicator 20. The base 10 can be made of plastic and is rectangular in shape. The base 10 has a receiving groove 11, a first positioning part 120, and a second positioning part 14. The receiving groove 11 is used to accommodate the mobile phone, fixing it to the base 10 for positioning after placement. The first positioning part 120 is located at the front end of the base 10, and the second positioning part 14 is located at the rear end of the base 10. After the protective film is applied to the base 10, the front end of the protective film engages with the first positioning part 120, and the rear end engages with the second positioning part 14. 4. The protective film is fixed to the base 10 to position it. The base 10 has front-to-back extending limiting ribs 15 on both sides. The limiting ribs 15 have clearance notches 151 extending from their top surface to their bottom surface near their rear end. The scraper 20 has a slide block 21 on both sides. The two slide blocks 21 are slidably mounted on the base 10 so that the scraper 20 slides with the base 10. Then, the scraper 20 can slide relative to the base 10 in the front-to-back direction under the push of external force. When the scraper 20 slides back and forth, it can press the protective film positioned on the base 10 onto the touch screen of the mobile phone positioned on the base 10.Each slide block 21 is provided with a first protrusion 22 and a second protrusion 23 extending inward. The first protrusion 22 and the second protrusion 23 are staggered by a certain distance in the front-back direction. The first protrusion 22 on the two slide blocks 21 can be positioned below the rear ends of the two limiting ribs 15 from both sides of the base 10 in the upward direction, and is configured to rotate relative to the base 10, so that the scraper 20 can rotate relative to the base 10. This allows the scraper 20 to rotate between a first position located at the rear of the base 10 and a second position located above the base 10. When the scraper 20 is in the first position, it is in a flipped state, that is, the bottom of the scraper 20 is facing upward. When the scraper 20 rotates from the first position to the second position, it rotates 180° and is positioned above the base 10, so that the bottom of the scraper 20 is facing downward. Thus, when the scraper 20 is in the second position... When the scraper 20 is moved forward, the squeezing or rolling component at the bottom of the scraper 20 can be used to press the upper surface of the protective film. Using the first protrusion 22 as a pivot, the scraper 20 can be rotated from the first position to the second position. The second protrusion 23, which is set at a certain distance from the first protrusion 22, has a certain range of swing amplitude. The second protrusion 23 with a certain swing amplitude can pass through the clearance notch 151 on the limiting rib 15. When the scraper 20 swings forward to the second position, the second protrusion 23 is exactly below the limiting rib 15. Thus, the first protrusion 22 and the second protrusion 23 located below the limiting rib 15 cooperate with the limiting rib 15 to form a limiting mechanism. This limiting mechanism is used to prevent the scraper 20 from detaching from the base 10 upward. In this way, the scraper 20 can be stably slidably engaged with the base 10 when it presses the upper surface of the protective film from back to front.

[0036] In one specific embodiment, the limiting rib 15 extends in a straight line onto the side surface 101 of the base 10, and the rear end of the limiting rib 15 extends directly in a straight line to the rear end of the base 10, protruding outward from the side surface 101 of the base 10. That is, the outer side surface of the limiting rib 15 protrudes outward from the side surface 101 of the base 10. Thus, the bottom surface of the limiting rib 15 forms a limiting surface 152 extending outward from the side surface 101 of the base 10. The limiting surface 152 and the side surface 101 of the base 10 form a stepped structure that is narrow at the bottom and wide at the top. When the scraper 20 is in the second position, the first... Both the first protrusion 22 and the second protrusion 23 are located below the limiting surface 152. The limiting surface 152 can prevent the first protrusion 22 and the second protrusion 23 from moving upward. Then, the limiting surface 152 at the bottom of the limiting rib 15 cooperates with the first protrusion 22 and the second protrusion 23 to form the above-mentioned limiting mechanism. The limiting rib 15 extends in the front-back direction, so that the first protrusion 22 and the second protrusion 23 can slide back and forth below the limiting rib 15. When the scraper 20 moves from back to front, the cooperation between the limiting rib 15 and the first protrusion 22 and the second protrusion 23 guides the scraper 20. In this embodiment, the rear end of the limiting rib 15 extends to the rear end of the base 10, so that the portion of the side 101 of the base 10 located below the limiting rib 15 forms an open structure. The scraper 20 in the flipped state can be placed behind the base 10, and the first protrusion 22 can be placed outside the side 101 from the bottom of the base 10 and below the rear end of the limiting rib 15. The open structure allows the first protrusion 22 to rotate freely relative to the base 10.

[0037] See Figure 1 , 4As shown, in another specific embodiment, the limiting rib 15 is also configured to extend in a straight line. A limiting stop rib 16 is provided below the rear end of the limiting rib 15. The limiting stop rib 16 consists of a vertical segment extending downward from the rear end of the limiting rib 15 and a horizontal segment extending forward from the vertical segment. Thus, the limiting stop rib 16 and the limiting rib 15 together form a groove 160 below the rear end of the limiting rib 15. The front end of the groove 160 forms an opening 161. The width of the groove 160 and the size of the opening 161 are set to allow the first protrusion 22 to be inserted into the groove 160 from the opening 161. The part of the interior of the groove 160 opposite to the opening 161 forms a support surface 162. The support surface 162 is used to provide support for the first protrusion 22 to limit its movement. The first protrusion 22 is constrained. When assembling the scraper 20 with the base 10, the first protrusion 22 is placed below the side of the base 10 and moved upward so that the first protrusion 22 contacts the limiting surface 152 at the bottom of the limiting rib 15. At this time, the first protrusion 22 is flush with the opening 161 of the groove 160. The first protrusion 22 is moved backward so that it is embedded into the groove 160 through the opening 161. During the process of flipping the scraper 20 from the first state to the second state, the first protrusion 22 is constrained in the groove 160. When flipping the scraper 20, a slight backward force is applied to support and constrain the first protrusion 22 through the supporting surface 162, preventing the first protrusion 22 from moving backward and downward, ensuring that the scraper 20 can be flipped stably. At the same time, the second protrusion 23 can accurately pass through the avoidance notch 151 and move to the bottom of the limiting rib 15. It should be noted that the aforementioned limiting rib 16 can be provided at the rear end of the limiting rib 15 on one side of the base 10, or a limiting rib 16 can be provided at the rear end of the two limiting ribs 15 on both sides of the base 10.

[0038] This invention can also be implemented by providing an outwardly protruding locking post 163 on the side 101 of the base 10, located below the rear end of the limiting rib 15. A slot 221 is provided on the inner end face of the first protrusion 22. Utilizing the deformable properties of the plastic material, the locking post 163 can be embedded in the slot 221 and disengaged from the slot 221. When assembling the scraper 20 with the base 10, the first protrusion 22 is positioned from the bottom of the side 101 of the base 10. At the locking post 163, the locking post 163 is inserted into the locking groove 221. At this time, the first protrusion 22 can rotate relative to the base 10 with the locking post 163 as the axis. Through the cooperation between the locking post 163 and the locking groove 221, the first protrusion 22 can be prevented from moving back and forth or up and down when the scraper 20 is flipped. When the scraper 20 is flipped to the second state, a forward thrust is applied to the scraper 20, and the locking post 163 can be disengaged from the locking groove 221 to ensure that the scraper 20 can move forward normally.

[0039] Figure 5 , 6 Figure 7 illustrates the assembly process of the film scraper 20 and the base 10 in this utility model, such as... Figure 6 As shown, the scraper 20 is in the first state, with its bottom facing upwards, and the first protrusion 22 is placed in the groove 160, as... Figure 5 As shown, when the scraper 20 is flipped forward, the first protrusion 22 rotates inside the groove 160, causing the second protrusion 23 to swing downward through the clearance notch 151. When the second protrusion 23 just passes through the clearance notch 151, the scraper 20 is in the position shown. Figure 7 In the second state shown, the film scraper 20 is positioned above the second positioning part 14, and the component at the bottom of the film scraper 20 used to squeeze the protective film is located near the rear of the protective film. By pushing the film scraper 20 forward, the protective film can be squeezed in the direction from back to front using the film scraper 20.

[0040] In this invention, by providing a limiting rib 15 on the base 10 and a first protrusion 22 and a second protrusion 23 on the film scraper 20, the film scraper 20 can be assembled onto the base 10 from the rear by flipping it forward. The film scraper 20 will not obstruct the upper rear of the base 10, and the protective film can be easily installed onto the base 10. There is no need to reserve a space at the rear of the base 10 to avoid the second positioning part 14 located at the rear of the base 10, which can shorten the overall length of the base 10 and reduce material waste. When the film scraper 20 is flipped to the second position, the film scraper 20 can get closer to the rear edge of the protective film. During the process of the film scraper 20 moving forward to press the protective film, the distance moved by the film scraper 20 is shorter, which improves the efficiency of film application.

[0041] See Figure 2 , 3 As shown, the slide 21 includes a wall plate 211 located outside the limiting rib 15. The first protrusion 22 and the second protrusion 23 both extend inward from the inner side of the wall plate 211. The length of the second protrusion 23 is less than the length of the first protrusion 22. The clearance notch 151 is formed by the recess of the outer side of the limiting rib 15 towards the side 101 of the base 10. The depth of the clearance notch 151 is less than the width of the limiting rib 15, meaning that the limiting surface 152 at the bottom of the limiting rib 15 is not broken at the clearance notch 151. Since the length of the second protrusion 23 is relatively small, it is... Figure 6 The state shown indicates that the scraper 20 is flipped to... Figure 7 In the state shown, the clearance notch 151 ensures that the second protrusion 23 swings from above the limiting protrusion 15 to below the limiting protrusion 15. When the scraper 20 is in the second state and is pushed forward, the portion of the limiting surface 152 located at the clearance notch 151 can still prevent the first protrusion 22 from sliding upward.

[0042] The slide 21 can be configured as an inverted U-shaped structure with an outer wall on its outer side and an inner wall 212 on its inner side. The aforementioned wall plate 211 can serve as the outer wall of the slide 21. A downward-facing groove 213 is formed between the inner wall 212 and the wall plate 211. The top of the limiting rib 15 is slidably embedded in the groove 213, so that the slide 21 slides with the base 10. The straight-extending limiting rib 15 guides the forward and backward movement of the slide 21.

[0043] A flexible extrusion roller 24 is installed on the film scraper 20. The two ends of the flexible extrusion roller 24 are pivotally connected to the two slides 21. Specifically, the two ends of the flexible extrusion roller 24 are pivotally connected to the inner sidewalls 212 of the two slides 21. When the film scraper 20 extrudes the protective film, the flexible extrusion roller 24 contacts the upper surface of the protective film and applies downward extrusion force to the protective film. The flexible extrusion roller 24, which can produce a certain deformation, can fully combine with the upper surface of the protective film, which is conducive to removing the air between the protective film and the mobile phone touch screen.

[0044] See Figure 8 , 9 The bottom of the first positioning part 120 forms a first support surface 102 for supporting the front end of the lower surface of the protective film, and the bottom of the second positioning part 14 forms a second support surface 103 for supporting the rear end of the lower surface of the protective film. The height of the first support surface 102 is higher than the height of the second support surface 103. After the front end of the protective film 40 is engaged with the first positioning part 120, it is placed on the first support surface 102. After the rear end of the protective film 40 is engaged with the second positioning part 14, it is placed on the second support surface 103, so that the protective film 40 is in an inclined state with the front higher than the rear. When the flexible extrusion roller 24 of the film scraper 20 extrudes the protective film 40 forward, the air between the protective film 40 and the touch screen of the mobile phone 30 can be discharged forward, and the part of the protective film 40 that is not extruded by the flexible extrusion roller 24 is in a raised state, thereby preventing air bubbles from forming between the protective film 40 and the touch screen of the mobile phone 30.

[0045] The first positioning part 120 includes a first support surface 102, a positioning post 12, and a positioning post 13. The positioning post 12 and the positioning post 13 extend upward from the first support surface 102. The positioning post 12 and the positioning post 13 are staggered by a certain distance along the width direction of the base 10, and the positioning post 12 and the positioning post 13 have different cross-sectional shapes. Specifically, the cross-section of the positioning post 12 is circular, and the cross-section of the positioning post 13 is elliptical. When the protective film 40 is installed on the base 10, the positioning post 12 and the positioning post 13, with their different shapes, correspond to the circular hole and the elliptical hole at the front end of the protective film, respectively, to prevent the protective film 40 from being mistakenly installed and to prevent it from being flipped onto the base 10. Of course, the cross-sectional shape of the positioning post 12 and the positioning post 13 can also adopt other structures, not limited to the circular and elliptical shapes mentioned above, as long as they can cooperate to prevent the protective film 40 from being mistakenly installed. The positioning post 12 and the positioning post 13 can be set on a boss extending upward from the front end of the base 10, and the top surface of the boss forms the first support surface 102 mentioned above. In other embodiments, the first positioning part 120 is not limited to being composed of the two positioning posts described above; it may also be composed of one positioning post or three or more positioning posts. In other embodiments, the first positioning part 120 may include a columnar structure that protrudes upward from the first support surface 102. The cross-section of the columnar structure is set to be an irregular structure, or in other words, the columnar structure is at least a non-symmetrical structure, which can also achieve the goal of preventing mistaken installation of the protective film 40.

[0046] A crossbeam 17 is provided at the rear of the base 10. The second positioning part 14 is a hook provided on the crossbeam 17. When installing the protective film 40, the rear end of the protective film 40 is hooked onto the hook, and the positioning pins 12 and 13 at the front end of the base 10 are inserted into the two holes reserved at the front end of the protective film 40. The protective film 40 is then installed on the base 10. The hook cooperates with the rear end of the protective film 40 to prevent the protective film 40 from falling off the base 10. A downwardly recessed positioning groove 171 is provided on the upper surface of the crossbeam 17. The shape of the positioning groove 171 matches the shape of the rear end of the protective film 40. Specifically, the shape of the positioning groove 171 matches the structural shape of the rear end of the protective film 40, which serves as a supporting structure. It should be noted that the supporting part of the protective film 40 is an auxiliary structure and not a part that adheres to the touch screen of the mobile phone 30. The aforementioned supporting part protrudes from the rear of the adhering part. The above-mentioned structure of the protective film 40 is a conventional structure and will not be described in detail here. After the protective film 40 is installed on the base 10, the rear end of the protective film 40, which serves as a supporting structure, is embedded in the positioning groove 171. The positioning groove 171 is used to position the rear end of the protective film 40. The bottom surface of the positioning groove 171 forms a support plane for supporting the rear end of the protective film 40. This support plane can serve as the second support surface 103 mentioned above. By using the positioning groove 171 to position the rear end of the protective film 40, the installation accuracy of the protective film 40 on the base 10 can be further improved. The hook, which serves as the second positioning part 14, is connected to the support plane, and a cutout 172 is formed on the crossbeam 17 below the hook. When installing the protective film 40, the rear end of the protective film 40 is hung on the hook from below. The cutout 172 below the hook can avoid the protective film 40, thereby facilitating the hanging of the protective film 40 on the hook.

[0047] The base 10 is surrounded by a frame, and each frame of the base 10 has a positioning rib 18 extending vertically inward. The multiple positioning ribs 18 together define a receiving groove 11 on the base 10. The positioning ribs 18 engage with the edge of the mobile phone 30 to position the mobile phone 30, preventing damage to the mobile phone 30 due to excessive contact area between the base 10 and the mobile phone 30. At the same time, by simply adjusting the length of the positioning ribs 18, the receiving groove 11 can be adapted to the positioning of terminal devices of different sizes. For example, when the base 10 is manufactured by injection molding, only the corresponding dimensions at the positioning ribs 18 in the injection mold need to be set to obtain the corresponding base 10, without making significant modifications to the injection mold.

[0048] The above example only uses mobile phone 30. It should be noted that the above screen protector device is not only applicable to mobile phones, but also to other terminal devices such as tablet computers.

[0049] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A film attaching apparatus characterized by comprising: The base and the film scraper are included. The base is provided with a containing groove for accommodating and positioning the terminal device, a first positioning part and a second positioning part. The first and second positioning parts are respectively located at the front end and the rear end of the base and are matched with the front end and the rear end of the protective film to position the protective film. The base is provided with a limiting protrusion extending forward and backward on each side. The limiting protrusion is provided with an avoiding notch extending from the top surface to the bottom surface. The film scraper is provided with a sliding seat on each side. The two sliding seats are slidably mounted on the base to enable the film scraper to slide relative to the base in the forward and backward directions. Each sliding seat is provided with a first protruding column and a second protruding column extending inward. The first protruding column and the second protruding column are arranged staggered in the forward and backward directions. The two first protruding columns are configured to be positioned below the rear end of the limiting protrusion and rotatable relative to the base to enable the film scraper to rotate between a first position located at the rear of the base and a second position located above the base. When the film scraper rotates from the first position to the second position, the two second protruding columns swing below the limiting protrusion through the avoiding notch on the limiting protrusion to form a limiting mechanism for preventing the film scraper from separating upward from the base by cooperating the first protruding column, the second protruding column and the limiting protrusion.

2. The device of claim 1, wherein the adhesive film is a double-sided adhesive film. The limiting protrusion is arranged on the side surface of the base. The outer side surface of the limiting protrusion protrudes from the side surface of the base to form a limiting surface extending outward from the side surface of the base. When the film scraper is in the second position, the first protruding column and the second protruding column are positioned below the limiting surface.

3. The film attaching apparatus according to claim 2, wherein The sliding seat includes a wall plate on the outer side of the limiting protrusion. The first protruding column and the second protruding column extend inward from the inner side surface of the wall plate. The length of the second protruding column is less than the length of the first protruding column. The avoiding notch is recessed from the outer side surface of the limiting protrusion toward the side surface of the base. The recess depth of the avoiding notch is less than the width of the limiting protrusion.

4. The film attaching device according to claim 1, wherein A limiting stop rib is arranged below the rear end of one limiting protrusion or below the rear end of both limiting protrusions. The limiting stop rib and the limiting protrusion jointly form a groove with an opening facing forward for the first protruding column to be embedded. The part inside the groove opposite to the opening forms a supporting surface for providing support to the first protruding column when the first protruding column rotates in the groove to prevent the first protruding column from moving backward and downward relative to the limiting stop rib.

5. The film attaching device according to claim 1, wherein A clamping column protruding outward is arranged on the base at a position below the rear end of the limiting protrusion. The inner side end of the first protruding column is provided with a clamping groove. The clamping column can be embedded in the clamping groove to enable the first protruding column to pivotally cooperate with the clamping column and to be separated from the clamping groove.

6. The device of claim 1, wherein the adhesive is a pressure sensitive adhesive. The sliding seat includes an outer side wall and an inner side wall on the inner side of the outer side wall. An open downward sliding groove is formed between the outer side wall and the inner side wall. The limiting protrusion is slidably embedded in the sliding groove.

7. The device of claim 1, wherein the adhesive film is a double-sided adhesive film. A flexible extrusion roller is mounted on the film scraper between the two sliding seats. The two ends of the flexible extrusion roller are pivotally connected to the two sliding seats respectively.

8. The device of claim 1, wherein the adhesive is a pressure sensitive adhesive. The first positioning part includes a first supporting surface and two positioning columns extending upward from the first supporting surface. The two positioning columns are staggered in the width direction of the base and have different cross-sectional shapes.

9. The film attaching device according to claim 1, wherein The bottom of the first positioning part forms a first supporting surface for supporting the front end of the lower surface of the protective film, and the bottom of the second positioning part forms a second supporting surface for supporting the rear end of the lower surface of the protective film, wherein the first supporting surface is higher than the second supporting surface.

10. The film attaching device according to claim 1, wherein The rear part of the base is provided with a crossbeam, and the second positioning part is a hook arranged on the crossbeam.

11. The film attaching apparatus according to claim 10, wherein The upper surface of the crossbeam is provided with a positioning groove which is concave downward and matches the shape of the rear end of the protective film, and is used for accommodating the rear end of the protective film to position the rear end of the protective film, the bottom surface of the positioning groove forms a supporting surface for supporting the rear end of the protective film, the hook is connected to the supporting surface, and the part below the hook on the crossbeam forms a hollow part.

12. The device of claim 1, wherein the adhesive is a pressure sensitive adhesive. The base comprises a frame around the periphery, and a positioning convex rib vertically extends inward on each side of the frame, and the inner edges of the plurality of positioning convex ribs jointly define a receiving groove on the base.

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