A film pasting device and a film pasting assembly

Abstract

The utility model discloses a kind of film applicator and film pasting assembly, comprising: pedestal, the pedestal surface recessed has accommodating groove, the pedestal is further provided with slide rail, the slide rail has start point end and end point end, the accommodating groove is between the start point end and end point end;Sliding member, the sliding member with the slide rail sliding cooperation, the sliding member is located the side surface where the accommodating groove is, the side of the sliding member towards the accommodating groove is equipped with film pressing piece, the film pressing piece has the crimping surface close to accommodating groove, the crimping surface has the first arc-shaped side close to the side of end point end, the first arc-shaped side is in the arc shape of the side of end point end convex. By setting curved film pressing piece, first by point contact and then transition to face contact when pasting film, prevent the generation of bubble by progressive fitting mode, help to discharge the bubble of protective film and electronic equipment piece.

Description

Technical Field

[0001] This utility model relates to the field of film application technology, and in particular to a film applicator and film application assembly. Background Technology

[0002] With the diversification of electronic products, more and more existing smart electronic devices are using curved screens for aesthetic purposes, which makes it easier for users to operate them more flexibly and conveniently. As a result, the risk of screen scratches is increased, and screen protectors are usually required for protection.

[0003] To accommodate curved screens, most screen protectors are flexible films. As a result, it is not easy to apply screen protectors to curved screens, especially since it is difficult to remove air bubbles during the application process of flexible films, which makes it very easy for air bubbles to form and leads to a high failure rate. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a film applicator and film application assembly. By setting a curved pressing member, the film application process first transitions from point contact to surface contact. The gradual application method prevents the formation of air bubbles and helps to remove air bubbles from the protective film and electronic components.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A film applicator includes: a base with a recessed receiving groove on its surface; a slide rail having a starting end and an ending end, the receiving groove being located between the starting end and the ending end; and a sliding member that slidably engages with the slide rail, the sliding member being located on the surface of the receiving groove, and a film-pressing member being provided on the side of the sliding member facing the receiving groove, the film-pressing member having a pressing surface near the receiving groove, the pressing surface having a first arc-shaped edge near the ending end, the first arc-shaped edge being an arc protruding towards the ending end.

[0007] As a further improvement to this solution, the edge of the pressing surface near the starting end forms a second arc-shaped edge, which bends toward the ending end. The second arc-shaped edge has the same curvature as the first arc-shaped edge, and the second arc-shaped edge extends parallel to the first arc-shaped edge while maintaining a distance.

[0008] As a further improvement to this solution, the pressing member has a first side surface near the end point, the first side surface protruding towards the end point side along the trajectory of the first arc-shaped edge, and the first side surface is perpendicular to the pressing surface.

[0009] As a further improvement to this solution, the pressing component also includes a second side surface near the starting end, the second side surface protruding towards the ending end side along the trajectory of the second arc-shaped edge, and the second side surface being perpendicular to the pressing surface.

[0010] As a further improvement to this solution, the pressing component also includes two connecting surfaces that connect the first side and the second side, the connecting surfaces being perpendicular to the pressing surface, and the pressing component forming a columnar structure extending in the thickness direction of the base.

[0011] As a further improvement to this solution, the slider includes a length direction perpendicular to the sliding direction of the slider; the first arc-shaped edge includes a first end and a second end, and the straight-line distance from the first end to the second end along the length direction is the chord length L; along the sliding direction of the slider, the first arc-shaped edge has an arc apex that is furthest from the chord length L; along the length direction, the straight-line distance from the arc apex to the first end is greater than or equal to 1 / 3L and less than or equal to 2 / 3L.

[0012] As a further improvement to this solution, along the sliding direction of the slider, the vertical distance from the arc apex to the chord length is the chord height H, and the chord height H is less than or equal to one-third of the chord length L.

[0013] As a further improvement to this solution, the sliding member also includes a mounting base, which slides in conjunction with the slide rail. The mounting base has a fixing groove on the side near the receiving groove, and the pressing member is disposed in the fixing groove. Along the thickness direction of the base, the fixing groove includes a depth dimension, and the pressing member includes a thickness dimension. The depth dimension of the fixing groove is greater than or equal to one-half of the thickness dimension of the pressing member, and less than or equal to four-fifths of the thickness dimension of the pressing member.

[0014] As a further improvement to this solution, the base has a width direction perpendicular to the sliding direction of the slider. The base is provided with a fixing member for engaging the protective film assembly. The fixing member is disposed outside the receiving groove and is disposed on both sides near the starting end and the ending end, with two fixing members on each side. The two fixing members are disposed opposite each other along the width direction of the base. Along the width direction of the base, the distance between the two fixing members at the starting end is greater than the width of the receiving groove, and the straight length of the two ends of the first arc-shaped edge is less than the distance between the two fixing members at the starting end.

[0015] This utility model also provides a film application assembly, including the film applicator described above. The film application assembly further includes a protective film assembly, which includes a protective film and a positioning film. The protective film is disposed above the receiving groove through the positioning film.

[0016] The beneficial effects of this invention are as follows: By setting a curved pressing component, the contact between the film and the screen transitions from point contact to surface contact during film application, ensuring a smoother transition and helping to expel air bubbles from the protective film and electronic components. Furthermore, by setting the curvature and vertical angle of the pressing component, the force applied to the protective film is ensured to be uniform, reducing the common problem of excessive or insufficient force in certain areas during traditional film application; it also avoids air bubble accumulation or film deformation caused by uneven contact in localized areas. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is an assembly diagram of the film applicator of this utility model;

[0019] Figure 2 This is a schematic diagram of the sliding component of this utility model;

[0020] Figure 3 This is a bottom view of the sliding component of this utility model. Figure 1 ;

[0021] Figure 4 This is a bottom view of the sliding component of this utility model. Figure 2 ;

[0022] Figure 5 yes Figure 3 A cross-sectional schematic diagram of AA in the middle;

[0023] Figure 6 This is a top view of the base of this utility model;

[0024] Figure 7 yes Figure 6 Cross-sectional schematic diagram of BB;

[0025] Figure 8 This is an assembly diagram of the film-applying component of this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. Base; 11. Receiving groove; 12. Slide rail; 121. Starting end; 122. Ending end; 13. Fixing component; 2. Sliding component; 21. Mounting seat; 211. Fixing groove; 22. Pressing component; 221. Pressing surface; 222. First arc-shaped edge; 223. Second arc-shaped edge; 224. First end; 225. Second end; 226. Arc apex; 3. Protective film assembly. Detailed Implementation

[0027] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0028] Reference Figures 1 to 8 This utility model provides a screen protector applicator to assist in applying screen protectors to electronic devices, ensuring that the protective film is accurately aligned with the screen of the electronic device while avoiding air bubbles during application. The applicator includes a base 1 and a slider 2. The base 1 is used to position the electronic device and the protective film assembly 3, ensuring that the screen of the electronic device is aligned with the protective film. The slider 2 is slidably disposed on the base 1, pressing the protective film during sliding to adhere it to the screen.

[0029] A receiving groove 11 adapted to an electronic device is recessed on the surface of the base 1. The electronic device is placed in the receiving groove 11, thereby serving a positioning function. A slide rail 12 is also provided on the base 1. The slider 2 slides within the slide rail 12, allowing the slider 2 to slide within the range of the slide rail 12. Furthermore, the slide rail 12 includes a starting end 121 and an ending end 122, with the receiving groove 11 located between the starting end 121 and the ending end 122. The slider 2 is located on the side of the base 1 where the receiving groove 11 is provided. When the slider 2 slides on the slide rail 12, it can completely pass through the receiving groove 11, thereby completely pressing down on the electronic device.

[0030] Protective films can be soft or hard. The extensibility of soft films makes adhesion more difficult. To achieve better pressure-pressing and air-release effects, preferably, the sliding member 2 is provided with a pressure-pressing member 22. The pressure-pressing member 22 is located on the side of the sliding member 2 facing the receiving groove 11, and has a pressing surface 221 for contacting the protective film assembly 3. The pressing surface 221 is located on the side near the receiving groove 11. In this embodiment of the invention, the pressure-pressing member 22 can be made of flexible materials such as foam, rubber, or silicone, which can be soft and not damage the film, while applying pressure to achieve the pressure-pressing effect.

[0031] Specifically, the pressing surface 221 has a first arc-shaped edge 222 on the side near the end point 122, and the first arc-shaped edge 222 is configured to protrude in the direction of the end point 122. When the pressing member 22 first contacts the device screen, it initially forms a point contact with the screen by the tangent of the protruding edge; this avoids excessive pressure in the initial stage, which could cause large pieces of film to adhere directly and generate air bubbles. Furthermore, as the slider 2 is pushed, the pressing member 22 gradually applies uniform pressure to the device screen, causing the pressing surface 221 to gradually change from point contact to surface contact. This gradual bonding method prevents the generation of air bubbles and ensures a smoother transition between the film and the screen.

[0032] Furthermore, the edge of the pressing surface 221 near the starting end 121 of the slide rail 12 forms a second arc-shaped edge 223. The second arc-shaped edge 223 also bends towards the ending end 122 of the slide rail 12, forming a consistent arc structure with the first arc-shaped edge 222. The bending angle and shape of the two are the same, thus ensuring the uniformity and stability of the film-pressing component 22 during the film application process. While the first arc-shaped edge 222 and the second arc-shaped edge 223 extend in parallel, they maintain a fixed distance, ensuring the consistency of the thickness of the film-pressing component 22 throughout the sliding process. This ensures that the area of ​​the pressing surface 221 received by each region of the film is consistent in the direction perpendicular to the sliding direction, that is, in the length direction of the film-pressing component 22, or in the width direction of the base 1, thereby ensuring uniform pressure.

[0033] Furthermore, the pressure-pressing component 22 has a first side surface near the end point 122. This first side surface is perpendicular to the pressing surface 221 and is connected to a first arc-shaped edge 222, which is one edge of the first side surface. To ensure that the pressure on the film is consistent, the first side surface protrudes along the trajectory of the first arc-shaped edge 222. The first side surface extends linearly in the thickness direction of the base 1, avoiding localized protrusions. This design further enhances the stability of the pressure-pressing component 22. It also ensures that the pressure-pressing component 22 applies a uniform force to the protective film in the vertical direction, reducing the common problem of excessive or insufficient localized force during traditional film application and avoiding uneven localized force distribution.

[0034] Meanwhile, the pressure film component 22 includes a second side surface near the starting end 121. The second side surface is opposite to the first side surface and is perpendicular to the pressure surface 221. The second side surface is connected to a second arc-shaped edge 223, which is one edge of the second side surface. The second side surface protrudes along the trajectory of the second arc-shaped edge 223. The design of the second side surface also presents a straight-line extending surface in the thickness direction of the base 1, avoiding the formation of local protrusions and preventing the accumulation of air bubbles or deformation of the film due to uneven contact in local areas.

[0035] As the pressure-pressing component 22 slides along the screen surface, the protruding shape of the second side makes the pressure application smoother. The design of the second side echoes that of the first side, ensuring that the pressure-pressing component 22 maintains a consistent thickness throughout the entire pressing process, thus keeping the pressure distribution even during sliding. By adjusting the pressure-pressing component 22 to maintain a consistent bending angle and thickness, the pressure balance is precisely controlled, improving the uniformity and stability of the pressure-pressing component 22 throughout the entire film application process.

[0036] Furthermore, the pressure-fitting component 22 includes not only the first and second sides, but also connecting surfaces that link these two sides. To ensure precise pressure control, these connecting surfaces extend linearly in the thickness direction and are always perpendicular to the pressing surface 221, forming a columnar structure in the vertical direction, thus ensuring the strength and stability of the entire pressure-fitting component 22. The connecting surfaces, acting as a bridge between the first and second sides, ensure that the structure of the pressure-fitting component 22 does not deform or become uneven under stress. This effectively enhances the overall stability of the pressure-fitting component 22, allowing the diaphragm to maintain uniform stress throughout the bonding process.

[0037] Please refer to the following carefully. Figure 4 To improve the bubble removal effect and the uniformity of force on the membrane, the arc-shaped edge of the pressing member 22 was optimized. Specifically, the slider 2 has a rectangular structure, with its length direction being the width direction of the base 1 and its sliding direction being the length direction of the base 1. Therefore, the length direction of the slider 2 is perpendicular to its sliding direction. Along the length direction of the slider 2, the first arc-shaped edge 222 includes a first end 224 and a second end 225, and the straight-line distance from the first end 224 to the second end 225 is defined as the chord length L. The first arc-shaped edge 222 also includes an arc apex 226, which is the vertex furthest from the chord length along the direction of movement of the base 1. The arc apex 226 is more prominent than the first end 224 and the second end 225 of the first arc-shaped edge 222. During the pressing movement of the slider 2, the arc apex 226 is the first part to contact the protective film. As the slider 2 moves, the point contact of the arc apex 226 gradually changes to the surface contact of the pressing surface 221. This results in a gradual pressure distribution during the lamination process, so the design position of the arc apex 226 is closely related to the air bubble discharge during the diaphragm bonding process. Specifically, along the length of the slider 2, the distance between the arc apex 226 and the first end 224 is greater than or equal to 1 / 3 of the chord length L and less than or equal to 2 / 3 of L, so that the arc apex 226 is set in the middle part of the first arc-shaped edge 222. Thus, during the lamination process, the air venting direction of the diaphragm is from the middle to both sides, and the two sides of the diaphragm gradually spread evenly towards both ends, enhancing the uniformity of the stress on the diaphragm.

[0038] Furthermore, the curvature of the first arc-shaped edge 222 is optimized. Specifically, along the sliding direction of the slider 2, the vertical distance from the arc apex 226 to the chord length L is defined as the chord height H, and the chord height H is limited to less than or equal to one-third of the chord length L. This effectively avoids excessive bending of the pressure film component 22 and ensures that the pressure film components 22 on both sides of the arc apex 226 can quickly catch up. If the vertical distance from the arc apex 226 to the chord length is too large, the bending degree of the pressure film component 22 may be too severe. As a result, during the pressing process, the two sides of the film cannot be synchronously bonded to the screen surface, causing the middle part of the film to be subjected to greater force, while the pressure distribution on the sides is insufficient. When the film is too soft, it may cause the sides and the middle of the film to twist and wrinkle, thereby affecting the overall bonding effect of the film.

[0039] Furthermore, since the pressure-pressing component 22 is mounted on the sliding component 2, if the pressure-pressing component 22 is too curved, it will cause the width of the sliding component 2 to increase, requiring the base 1 to be enlarged so that the sliding component 2 can completely press over the protective film. However, the ratio of chord length L to chord height H in this invention ensures that the pressure-pressing component 22 has sufficient curvature, while also ensuring that both sides of the pressure-pressing component 22 can slide through the film, without needing to increase the length of the slide rail 12, thus saving space occupied by the base 1.

[0040] To mount the film-forming component 22 onto the sliding component 2, the sliding component 2 includes a mounting base 21, which is mounted on the base 1 and slidably engages with the slide rail 12. The mounting base 21 has a fixing groove 211 on the side near the receiving groove 11 of the base 1. The film-forming component 22 is fixed within the fixing groove 211, thus sliding along with the mounting base 21. The fixing groove 211 effectively secures the film-forming component 22, preventing unnecessary swaying during use. Along the thickness direction of the base 1, the fixing groove 211 has a depth dimension, and the film-forming component 22 also has a thickness dimension in this direction. The depth dimension of the fixing groove 211 is greater than or equal to half the thickness dimension of the film-forming component 22, and less than or equal to four-fifths of the thickness dimension of the film-forming component 22, ensuring that a portion of the film-forming component 22 protrudes outside the fixing groove 211, facilitating the film-forming process. This design not only ensures the stability of the pressure film component 22 fixed on the mounting base 21 and prevents the pressure film component 22 from being exposed too much, which would cause excessive swaying due to friction with the diaphragm during movement, but also provides a certain margin to ensure that the sliding component 2 can smoothly perform the sliding pressure film operation, thereby effectively ensuring the stability of the pressure film venting effect.

[0041] In this embodiment of the utility model, the protective film needs to be fixed on the base 1 by the positioning film. Therefore, the base 1 is provided with a fixing member 13 for snapping and fixing the positioning film. The fixing member 13 is located outside the receiving groove 11 and is located on both sides near the starting end 121 and the ending end 122. Two fixing members 13 are provided on each side. The two fixing members 13 are arranged opposite to each other along the width direction of the base 1, thereby forming a four-corner fixation for the positioning film and ensuring that the protective film assembly 3 can remain stable throughout the film pressing process.

[0042] Furthermore, two opposing fasteners 13 are provided on one side near the starting end 121. Along the width direction of the base 1, the distance between these two fasteners 13 is greater than the width of the receiving groove 11, ensuring that the fixing and positioning film can cover the receiving groove 11. Moreover, the straight length of the two ends of the first arc-shaped edge 222 of the pressing member 22 is less than the distance between these two fasteners 13. In other words, the maximum dimension of the pressing member 22 along the width direction of the base 1 is less than the distance between the two fasteners 13, ensuring that there is no interference between the fasteners 13 and the pressing member 22. Therefore, it can be avoided that the pressing member 22 presses over the fasteners 13 during operation, and the fasteners 13 are not damaged due to the pressure of the pressing member 22.

[0043] This utility model embodiment also provides a film-applying assembly, which includes the film applicator and its beneficial effects described above, and therefore will not be repeated. The film applicator also includes a protective film assembly 3, which includes a protective film and a positioning film. The protective film is positioned above the receiving groove 11 through the positioning film. The positioning film is bonded to the side of the protective film away from the receiving groove 11. The protective film is provided with adhesive on the side near the receiving groove 11, and the adhesive is used to bond to the electronic device inside the receiving groove 11. In order to ensure that the pressing member 22 can completely press over the protective film, along the width direction of the base 1, that is, perpendicular to the sliding direction of the sliding member 2, the straight-line dimension of both ends of the first arc-shaped edge 222 is greater than the maximum dimension of the protective film. That is, by designing the length of the pressing member 22 to be greater than that of the protective film, it can be ensured that the pressing member 22 completely covers the film and smoothly completes the venting process.

[0044] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A film applicator, characterized in that, include: A base, the surface of which is recessed with a receiving groove, and the base is also provided with a slide rail, the slide rail having a starting end and an ending end, and the receiving groove being located between the starting end and the ending end; A sliding member is provided, which slides in conjunction with the slide rail. The sliding member is located on the surface of the receiving groove. A pressing member is provided on the side of the sliding member facing the receiving groove. The pressing member has a pressing surface close to the receiving groove. The pressing surface has a first arc-shaped edge close to the end point. The first arc-shaped edge is an arc shape that bulges towards the end point.

2. The film applicator according to claim 1, characterized in that, The edge of the pressing surface near the starting end forms a second arc-shaped edge, which bends toward the ending end. The second arc-shaped edge has the same curvature as the first arc-shaped edge, and the second arc-shaped edge extends parallel to the first arc-shaped edge while maintaining a distance.

3. The film applicator according to claim 1, characterized in that, The pressing component has a first side surface near the end point, the first side surface protruding towards the end point along the trajectory of the first arc-shaped edge, and the first side surface is perpendicular to the pressing surface.

4. The film applicator according to claim 3, characterized in that, The pressing component also includes a second side surface near the starting end, the second side surface protruding towards the ending end side along the trajectory of the second arc-shaped edge, and the second side surface being perpendicular to the pressing surface.

5. The film applicator according to claim 4, characterized in that, The pressing component further includes two connecting surfaces that connect the first side and the second side, the connecting surfaces being perpendicular to the pressing surface, and the pressing component forming a columnar structure extending in the thickness direction of the base.

6. The film applicator according to claim 1, characterized in that, The slider includes a length direction perpendicular to the sliding direction of the slider; the first arc-shaped side includes a first end and a second end, and the straight-line distance from the first end to the second end along the length direction is the chord length L; along the sliding direction of the slider, the first arc-shaped side has an arc apex that is furthest from the chord length L; along the length direction, the straight-line distance from the arc apex to the first end is greater than or equal to 1 / 3L and less than or equal to 2 / 3L.

7. The film applicator according to claim 6, characterized in that, Along the sliding direction of the slider, the vertical distance from the arc apex to the chord length is the chord height H, and the chord height H is less than or equal to one-third of the chord length L.

8. The film applicator according to any one of claims 1-7, characterized in that, The sliding member further includes a mounting base, which slides in conjunction with the slide rail. The mounting base has a fixing groove on the side near the receiving groove, and the pressing member is disposed in the fixing groove. Along the thickness direction of the base, the fixing groove includes a depth dimension, and the pressing member includes a thickness dimension. The depth dimension of the fixing groove is greater than or equal to one-half of the thickness dimension of the pressing member, and less than or equal to four-fifths of the thickness dimension of the pressing member.

9. The film applicator according to any one of claims 1-7, characterized in that, The base has a width direction perpendicular to the sliding direction of the slider. The base is provided with a fixing member for engaging the protective film assembly. The fixing member is disposed outside the receiving groove and is disposed on both sides near the starting end and the ending end. Two fixing members are disposed on each side. The two fixing members are disposed opposite each other along the width direction of the base. Along the width direction of the base, the distance between the two fixing members at the starting end is greater than the width of the receiving groove, and the straight length of the two ends of the first arc-shaped edge is less than the distance between the two fixing members at the starting end.

10. A film-applied assembly, characterized in that, The film applicator according to any one of claims 1-9 is further comprising a protective film assembly, the protective film assembly comprising a protective film and a positioning film, the protective film being disposed above the receiving groove via the positioning film.

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