Film pasting device

Abstract

The utility model is suitable for the field of electronic product accessories, and provides a film pasting device which is used for pasting a protective film on an electronic product and comprises a base, a sliding piece connected with the base in a sliding mode and a scraper arranged on the sliding piece, and the base is provided with a lifting area and a containing groove. When the sliding piece slides and sequentially passes through the lifting area and the containing groove, the protective film is pressed and attached to the electronic product through the scraping plate. The base is further provided with a buffer area between the lifting area and the containing groove, and the upper surface of the base in the buffer area is not higher than the lifting area and is not higher than the upper surface of the electronic product placed in the containing groove. According to the film pasting device, the film pasting quality can be effectively improved and guaranteed.

Description

Technical Field

[0001] The present application relates to the field of mobile phone accessories, and in particular to a film applicator. Background Art

[0002] To improve the quality and efficiency of film application for electronic products like mobile phones and watches, film applicators have emerged. Taking a mobile phone film applicator as an example, the protective film is coated with positioning film and release film on both sides. The applicator generally consists of a base, a slider that slidably engages the base, and a pressing member attached to the slider. The phone is placed on the base, and the protective film is positioned on the base above the phone using the positioning film. After the release film is removed, the protective film is exposed and faces the electronic product. The slider is then slid, and the pressing member presses the protective film onto the phone screen.

[0003] Existing pressure elements are typically rollers or scrapers. These scrapers and rollers elastically deform during film application, ensuring sufficient force is applied to the protective film without damaging it. Generally speaking, rollers offer less friction than scrapers and are easier to operate. Scrapers, on the other hand, have a simpler structure and require no rotating shaft or corresponding rotating connection, effectively eliminating the impact of assembly margins on film application quality. However, simply replacing the roller with a scraper has been found to produce unsatisfactory film application results, with bubbles easily forming at the leading edge of the protective film. Utility Model Content

[0004] The purpose of the present application is to overcome the deficiencies of the above-mentioned prior art and to provide a film applicator, which aims to improve the film applicator quality of the scraper film applicator.

[0005] A film applicator is used to attach a protective film to an electronic product. The film applicator includes a base, a sliding member that slides with the base, and a scraper provided on the sliding member. The base has a lifting area and a receiving groove. When the sliding member slides and passes through the lifting area and the receiving groove in sequence, the scraper presses the protective film onto the electronic product. The base is also provided with a buffer zone between the lifting area and the receiving groove. The upper surface of the base in the buffer zone is not higher than the lifting area, and is not higher than the upper surface of the electronic product when placed in the receiving groove.

[0006] Optionally, the upper surface of the base in the buffer zone is lower than the lifting area.

[0007] Optionally, the middle section of the scraper protrudes toward the moving direction of the scraper.

[0008] Optionally, both ends of the scraper are bent in a direction away from the movement of the sliding member.

[0009] Optionally, the scraper includes a straight segment and arc segments located at both ends of the straight segment, and the arc center of the arc segment is located on the side of the arc segment facing the middle segment.

[0010] Optionally, the scraper is made of EVA, foam or silicone.

[0011] Optionally, the film applicator is provided with an elastic member elastically connected to the base in the lifting area, and when the scraper is in the lifting area, the elastic member is elastically deformed by the pressure of the scraper;

[0012] The elastic member has a guide surface extending toward the accommodating groove and tilted downward, and the bottom edge of the guide surface facing the accommodating groove is not lower than the upper surface of the base in the buffer zone.

[0013] Optionally, the film applicator further includes a positioning structure, wherein the positioning structure is provided with a first positioning member and a second positioning member on the front and rear sides of the accommodating groove, and a positioning film is provided on the side of the protective film facing away from the electronic product, and the two ends of the positioning film are respectively cooperated with the first positioning member and the second positioning member; the first positioning member is provided in the lifting area.

[0014] Optionally, the base is provided with an avoidance hole in the lifting area, and the avoidance hole allows the protective film to pass through and be inserted into the first positioning member upward or in the sliding direction of the sliding member.

[0015] Optionally, the film applicator is used for applying films to mobile phones or watches.

[0016] The film applicator provided by the present application sets a buffer zone between the lifting area and the receiving groove. The upper surface of the base in the buffer zone is not higher than the lifting area, and is not higher than the upper surface of the electronic product when it is placed in the receiving groove. The setting of the buffer zone, first, has a certain distance range, which provides time for the deformation and reset of the scraper; second, when the buffer zone is not higher than the lifting area, it provides space for the deformation and reset of the scraper; finally, when the buffer zone is lower than the mobile phone screen, the scraper moves from the low point of the buffer zone to the slightly higher mobile phone screen, which is conducive to ensuring the front end of the protective film is stressed, thereby further ensuring the quality of the film. From the above, the film applicator provided by the present application can effectively improve and ensure the quality of the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a schematic diagram of the film applicator provided by this application;

[0019] Figure 2 yes Figure 1 Schematic diagram of the disassembly of the structure;

[0020] Figure 3 yes Figure 1 A schematic cross-section of the structure, where the dotted line represents the electronic products;

[0021] Figure 4 yes Figure 3 Schematic diagram of the structure from another angle;

[0022] Figure 5 yes Figure 3 A magnified view of a part of structure A;

[0023] Figure 6 It is a schematic diagram of the structure of the scraper in the embodiment of the present application, which is a top view.

[0024] Description of Figure Numbers:

[0025] 100. Film applicator; 10. Base; 101. Lifting area; 102. Accommodating groove; 103. Buffer zone; 20. Sliding member; 21. Scraper; 211. Straight segment; 212. Arc segment; 31. First positioning member; 32. Second positioning member; 40. Elastic member; 401. Guide surface; 200. Electronic product. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0027] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0028] It should also be noted that the directional terms such as left, right, up and down in the embodiments of the present application are merely relative concepts or are based on the normal use status of the product, and should not be considered as restrictive.

[0029] Please refer to Figures 1 to 6 , the film applicator 100 provided in this application is now exemplarily described.

[0030] The film applicator 100 is used to attach a protective film to an electronic product 200. The electronic product 200 may be a mobile phone, a tablet, a watch, etc. This embodiment is described by taking a mobile phone as an example.

[0031] The film applicator 100 is used in conjunction with a film assembly. The film assembly consists of a protective film and positioning films and release films covering opposite sides of the protective film. The release film is primarily used for dust protection. The positioning film not only provides dust protection but also provides positioning. The positioning film extends over the protective film and has positioning holes on its ends. During film application, the positioning holes are inserted into the positioning structure provided with the film applicator 100 to achieve positioning of the protective film. The membrane assembly can use existing membrane assembly structures and is not limited here.

[0032] The film applicator 100 includes a base 10, a sliding member 20 and a scraper 21. The base 10 has a lifting area 101 and a receiving groove 102. The sliding member 20 slides and passes through the lifting area 101 and the receiving groove 102 in sequence. The scraper 21 slides with the sliding member 20 to press the protective film onto the electronic product 200.

[0033] The slider 20 is slidably connected to the base 10. The slider 20 moves linearly. For ease of description, the slider 20 moves from front to back. The receiving groove 102 is formed on the upper surface of the base 10. The upper surface of the base 10 is upwardly protruding at the position of the raised area 101.

[0034] Slider 20 and scraper 21 are initially positioned in raised area 101 to prevent the phone from being placed into slot 102. After the phone is placed into slot 102 and the positioning film is positioned within the positioning structure, the release film is removed, exposing the protective film and placing it against the phone screen. Slider 20 then moves backward, crossing raised area 101 to reach slot 102. As slider 20 moves backward, the protective film adheres to the phone.

[0035] The upper surface of the base 10 is raised in the lifting area 101, so that the lower surface of the scraper 21 (that is, the pressing surface of the scraper 21 used to press the protective film when applying the film) is higher than the position of the mobile phone screen when the scraper 21 is in the lifting area 101. When it continues to move backward, it can naturally fall onto the protective film from a position higher than the mobile phone screen.

[0036] In actual R&D and production, it was found that due to the height difference between the lifting area 101 and the mobile phone screen, if the existing film applicator is used, the scraper 21 will apply the film from the lifting area 101 to the receiving groove 102, and bubbles are likely to appear at the front edge of the protective film. After theoretical research and practical verification, the reason is that the material used by the scraper 21 is different from that of the roller, and the scraper 21 is slow to reset after deformation. The scraper 21 undergoes elastic deformation in the lifting area 101 and then quickly reaches the front end of the receiving groove 102. At this time, the pressure surface of the scraper 21 does not have time to return to a state of complete contact with the protective film. The front end of the protective film is not subjected to force, so bubbles are likely to form in this area.

[0037] To address this issue, the film applicator 100 provided in this application further includes a buffer zone 103 between the raised area 101 and the receiving groove 102 of the base 10. The upper surface of the base 10 in the buffer zone 103 is no higher than the raised area 101, and no higher than the upper surface of the electronic product 200 when placed in the receiving groove 102. Preferably, the upper surface of the base 10 in the buffer zone 103 is lower than the raised area 101, and lower than the upper surface of the electronic product 200 when placed in the receiving groove 102.

[0038] When the scraper 21 moves from front to back with the sliding member 20, the scraper 21 undergoes elastic deformation at the lifting area 101, and its pressing surface is lifted upward. When it is at the buffer area 103, the pressing surface is reset downward under the action of the elastic restoring force of the scraper 21. When it is at the accommodating groove 102, the scraper 21 is squeezed again, causing the pressing surface to lift upward to compress the protective film.

[0039] The setting of the buffer zone 103, first, the buffer zone 103 has a certain distance range, which provides time for the deformation and restoration of the scraper 21; secondly, when the buffer zone 103 is not higher than the lifting area 101, it provides space for the deformation and restoration of the scraper 21; finally, when the buffer zone 103 is lower than the mobile phone screen, the scraper 21 moves from the low point of the buffer zone 103 to the slightly higher mobile phone screen, which is conducive to ensuring that the front end of the protective film is subjected to force, so as to further ensure the quality of the film.

[0040] In summary, the film applicator 100 provided in this application can effectively improve and ensure the quality of film applicator.

[0041] In this embodiment, the scraper 21 is made of EVA (ethylene vinyl acetate) material. EVA has great strength, which makes the scraper 21 have strong bending resistance. In other embodiments, the scraper 21 can also be made of silicone, foam or other soft materials, or spliced ​​with composite materials, which is not limited here.

[0042] In another embodiment of the present application, the middle section of the scraper 21 protrudes in the moving direction of the scraper 21. Combined with the above-mentioned direction definition, the middle section of the scraper 21 protrudes backward. Compared with the general flat plate design, the protruding setting of the middle section of the scraper 21 can improve the bending strength of the scraper 21. In addition, in combination with the film pasting operation, the middle of the scraper 21 is pressed against the film before the two sides. The air in the middle is squeezed and can be discharged to both sides, and the stress generated by the pressure in the middle can also be released to both sides. The two sides of the protective film are pressed after the air is discharged and the stress is released. This setting can effectively improve the quality of the film pasting and reduce the probability of bubbles.

[0043] In another embodiment of the present application, both ends of the scraper 21 are curved in a direction away from the movement of the slider 20. As the scraper 21 moves from front to back, both ends of the scraper 21 bend forward. Combined with the aforementioned, the curved sides enhance the bending strength of the scraper 21, effectively improving the quality of film application and reducing the likelihood of bubbles. This effect is particularly pronounced when applying soft films (as opposed to tempered films) or curved screens.

[0044] It should be noted that for film application on curved screens, the contact surface of the scraper 21 adapts to the shape of the curved screen. This primarily refers to the fact that, viewed in cross-section, the curved screen's two sides form downwardly curved arcs, and the scraper 21 also bulges downward along these arcs. In this embodiment, the backward curvature of the scraper 21 refers to the fact that, in horizontal projection, the two sides of the scraper 21 curve backward.

[0045] In another embodiment of the present application, the center of the scraper 21 is a straight segment 211. For film application on curved screens, the center of the scraper 21 is designed as a straight segment 211, corresponding to the flat surface of the curved screen. The sides of the scraper 21 are curved backwards, corresponding to the curved surfaces on both sides of the curved screen. This configuration effectively improves film application quality.

[0046] In another embodiment of the present application, please refer to Figure 6 The scraper 21 includes a straight segment 211 and arc segments 212 located at both ends of the straight segment 211 and extending forward. The arc center of the arc segment 212 is located on the side of the arc segment 212 facing the middle segment.

[0047] The arc-shaped design on both sides makes the pressure surface of the scraper 21 transition smoothly, effectively avoiding stress concentration. The arc center of the arc segment 212 is located on one side close to the middle section, that is, the arc segment 212 protrudes to both sides instead of being recessed towards the middle section.

[0048] In another embodiment of the present application, the two arc segments 212 are symmetrically arranged. This design allows the scraper 21 to receive a balanced force on both sides, thereby effectively avoiding deflection of the scraper 21 due to uneven force.

[0049] In another embodiment of the present application, please refer to Figure 2 The film applicator 100 is provided with an elastic member 40 elastically connected to the base 10 in the lifting area 101 . When the scraper 21 is in the lifting area 101 , the elastic member 40 is elastically deformed by the pressure of the scraper 21 .

[0050] In combination with the above, the base 10 has a protrusion in the lifting area 101, which is designed to be elastic, that is, the elastic member 40. The provision of the elastic member 40 allows the scraper 21 to elastically transition between the lifting area 101 and the buffer area 103.

[0051] In another embodiment of the present application, please refer to Figure 5The elastic member 40 has a guide surface 401 extending toward the accommodating groove 102 and tilted downward, and the bottom edge of the guide surface 401 facing the buffer zone 103 is not lower than the upper surface of the base 10 in the buffer zone 103 .

[0052] In the illustrated structure, the front surface of the elastic member 40 is tilted forward to form a climbing surface that climbs backward. The area between the climbing surface and the guide surface 401 is the highest point of the elastic member 40, and the highest point is preferably a plane or a curved surface.

[0053] As the scraper 21 moves from front to back, the elastic member 40 undergoes elastic deformation when passing through the climbing surface, which is manifested as the climbing surface moving downward until the scraper 21 reaches the highest point of the elastic member 40. Then, the elastic member 40 gradually returns to its original position until the scraper 21 leaves the elastic member 40, which is manifested as the guide surface 401 gradually moving upward until it returns to its original position.

[0054] Please refer to Figure 5 The bottom edge (rear edge) of the guiding surface 401 toward the buffer zone 103 is not lower than the upper surface of the base 10 in the buffer zone 103, which means that when the scraper 21 transitions from the rear edge of the elastic member 40 to the front edge of the buffer zone 103 of the base 10, the rear edge of the elastic member 40 is not lower than the front edge of the buffer zone 103, thereby ensuring that the scraper 21 falls from a high place to a low place when it moves from the lifting area 101 to the buffer zone 103.

[0055] The elastic member 40 and the lifting surface and the guiding surface 401 thereon enable the scraper 21 to move to the top of the protective film smoothly and gently.

[0056] In another embodiment of the present application, please refer to Figure 2 The film applicator 100 also includes a positioning structure, which includes a first positioning member 31 provided in the lifting area 101, and a second positioning member 32 provided on the side of the accommodating groove 102 away from the lifting area 101. A positioning film is provided on the side of the protective film away from the electronic product 200, and the two ends of the positioning film are respectively used to cooperate and fix with the first positioning member 31 and the second positioning member 32.

[0057] The first positioning member 31 is disposed in the lifting area 101. More specifically, the first positioning member 31 is disposed on the elastic member 40. The scraper 21 moves along with the slider 20 to the elastic member 40, crosses the first positioning member 31, and reaches above the positioning film. It then slides backward to attach the protective film to the phone screen. In other embodiments, the base 10 may have a clearance hole at a corresponding position on the elastic member 40 to allow the slider 20 to directly snap into place. After the positioning film is secured, the slider 20 snaps into place, placed above the positioning film, and then slides backward to attach the protective film to the phone screen.

[0058] In another embodiment of the present application, the elastic member 40 is provided with an avoidance hole, and the avoidance hole allows the protective film to pass through the avoidance hole and be inserted upward or backward into the first positioning member 31. The positioning film needs to pass through the avoidance hole and then be inserted into the first positioning member 31. The middle part of the positioning film is located above the base 10, and the front part where the positioning hole is located needs to pass through the avoidance hole and be located below the position where the first positioning member 31 is connected to the base 10. After being sleeved, during the process of film application, the middle of the positioning film is compressed, and its front end has a tendency to move upward. The connection between the first positioning member 31 and the base 10 will limit the upward movement of the positioning film, thereby preventing the positioning film from detaching from the first positioning member 31 during the film application process.

[0059] Figure 2 In the structure shown, the first positioning member 31 is connected to the base 10 and extends forward. The avoidance hole is opened on the front side of the first positioning column and extends to the left and right sides of the first positioning member 31. Figure 2 In the structure shown, the cross-sectional area of ​​the first positioning member 31 decreases from the back to the front, and this arrangement facilitates the insertion of the positioning film.

[0060] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A film applicator for attaching a protective film to an electronic product, comprising a base, a sliding member slidably connected to the base, and a scraper provided on the sliding member. The base has a lifting area and a receiving groove. When the sliding member slides and passes through the lifting area and the receiving groove in sequence, the scraper presses the protective film onto the electronic product. The base is further provided with a buffer zone between the lifting area and the accommodating groove. The upper surface of the base in the buffer zone is not higher than the lifting area and is not higher than the upper surface of the electronic product when placed in the accommodating groove.

2. The film applicator according to claim 1, characterized in that: The upper surface of the base in the buffer zone is lower than the lifting area.

3. The film applicator according to claim 1, characterized in that: The middle section of the scraper protrudes toward the moving direction of the scraper.

4. The film applicator according to claim 1, wherein: Both ends of the scraper are bent in a direction away from the movement of the sliding member.

5. The film applicator according to claim 1, wherein: The scraper includes a straight segment and arc segments located at both ends of the straight segment, and the arc center of the arc segment is located on the side of the arc segment facing the middle segment.

6. The film applicator according to claim 1, wherein: The scraper is made of EVA, foam or silica gel.

7. The film applicator according to any one of claims 1 to 6, characterized in that: The film applicator is provided with an elastic member elastically connected to the base in the lifting area, and when the scraper is in the lifting area, the elastic member is elastically deformed by the pressure of the scraper; The elastic member has a guide surface extending toward the accommodating groove and tilted downward, and the bottom edge of the guide surface facing the accommodating groove is not lower than the upper surface of the base in the buffer zone.

8. The film applicator according to any one of claims 1 to 6, characterized in that: The film applicator also includes a positioning structure, which is provided with a first positioning member and a second positioning member on the front and rear sides of the accommodating groove. A positioning film is provided on the side of the protective film facing away from the electronic product, and the two ends of the positioning film are respectively coordinated with the first positioning member and the second positioning member; the first positioning member is provided in the lifting area.

9. The film applicator according to claim 8, characterized in that: The base is provided with an avoidance hole in the lifting area, and the protective film is allowed to pass through the avoidance hole and be inserted into the first positioning member upward or in a sliding direction of the sliding member.

10. The film applicator according to any one of claims 1 to 6, characterized in that: The film applicator is used for applying films to mobile phones or watches.

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