Compression roller type film sticking device

Abstract

The utility model discloses a compression roller type film pasting device, a positioning seat of the film pasting device is provided with a positioning cavity, a compression roller assembly comprises a sliding seat and a compression roller, and a first positioning part and a first protruding part are arranged at the position, close to a starting end A, of the positioning seat; a second positioning part and a second protruding part are arranged at the position, close to the tail end B, of the positioning base, and the second protruding part is located between the positioning cavity and the second positioning part. During film pasting, the mobile phone is placed in the positioning cavity, the two ends of the protective film are installed above the positioning cavity in a suspended mode through the first positioning part and the second positioning part respectively, and the highest point of the first protruding part and the highest point of the second protruding part are higher than the plane where a mobile phone screen is located. The tail end area of the mobile phone protective film is supported through the second protruding part, it is guaranteed that a certain interval is kept between the protective film and a mobile phone screen all the time before the protective film is pressed by the pressing roller, and attaching bubbles caused when the protective film is attached in advance are avoided.

Description

Technical fields:

[0001] This utility model relates to the field of mobile phone screen protector technology, and specifically to a roller-type screen protector applicator. Background technology:

[0002] See Figure 1 , Figure 2 The diagram shown is a schematic of a common roller-type film applicator. It includes a positioning seat 91 and a roller seat 92. The positioning seat 91 has a positioning cavity 910 for accommodating and positioning the mobile phone 5. The roller seat 92 is slidably mounted on the positioning seat 91 via a slide rail mechanism, and a roller for rolling the protective film is installed inside the roller seat 92.

[0003] Combination Figure 3 As shown, a first positioning part 911 and a second positioning part 912 are respectively provided at the starting end A and the ending end B of the positioning seat 91, and on the outside of the positioning cavity 910. The working principle of this roller-type film applicator is as follows:

[0004] The screen protector 90 for mobile phones includes an upper positioning film 901 and a lower protective film body 902. The lower surface of the protective film body 902 has an adhesive. When the lower surface of the protective film body 902 is bonded to the surface of the mobile phone screen, the adhesive is used to form an adhesion. After the entire adhesion is complete, the positioning film 901 can be peeled off from the upper surface of the protective film body 902.

[0005] The positioning film 901 positions the protective film 90, with both ends extending outwards. A first positioning hole and a second positioning hole, corresponding to the first positioning part 911 and the second positioning part 912, are respectively provided in the extended areas. In use, the first positioning part 911 is snapped into the first positioning hole, and the second positioning part 912 is snapped into the second positioning hole, allowing the protective film 90 to be suspended above the screen of the mobile phone 5 located in the positioning cavity 910.

[0006] During operation, when the pressure roller seat 92 slides along the direction of the starting end A and the ending end B of the positioning cavity 910, the pressure roller 93 moves from the mobile phone 5 in the positioning cavity 910 and above the protective film 90 suspended above the mobile phone 5. The pressure roller 93 rolls the protective film 90 covering the mobile phone 5 to complete the application of the protective film.

[0007] To achieve a perfect fit between the protective film 90 and the mobile phone screen using a roller-type screen protector applicator, ensuring no air bubbles are generated in the bonding area, the following conditions must be met: During the bonding process, the protective film body 902 must gradually bond from the starting end A to the ending end B as the roller 93 moves, creating an effect of "removing bubbles" using the roller 93. If the side of the protective film body 902 closest to the starting end A or the side closest to the ending end B bonds with the mobile phone screen prematurely, unbonded air bubbles will form between the protective film body 902 and the mobile phone screen. To address this, existing screen protector applicator products employ the following structure:

[0008] First, a protrusion 911 is provided on the outer side of the positioning cavity 910 near the starting end A. The highest point of the protrusion 911 is higher than the screen surface of the mobile phone 5. Conventionally, the protrusion 911 is an inclined surface, and the first positioning part 911 is set on the inclined surface of the protrusion 911. This ensures that the protective film 90 will not come into premature contact with the mobile phone screen before the pressure roller 93 is pressed against it.

[0009] Secondly, the positioning film 901 used for positioning on the second positioning part 912 on the outer side of the positioning cavity 910 near the end B is also higher than the screen surface of the mobile phone 5. This ensures that the end of the protective film 90 near the end B will not come into premature contact with the mobile phone screen before it is pressed to the screen by the pressure roller 93.

[0010] However, as mobile phones become larger, the above structure has encountered the following problems:

[0011] First, regarding the protrusion 911 on the outer side of the starting end A, the highest point of protrusion 911 is higher than the screen surface of the mobile phone 5, and also higher than the lowest pressing surface of the pressure roller 93, thus obstructing the operation of the pressure roller 93. Although setting the protrusion 911 like a shoe upper allows the pressure roller 93 to pass over the protrusion 911 and press onto the mobile phone screen under external force, it still presents a certain degree of difficulty for users, especially for female users with less strength.

[0012] Secondly, while the second positioning part 912, located on the outer side of the end B, can suspend the protective film 90 above the phone screen without contacting it, the size of the protective film 90 gradually increases as phone sizes grow, leading to more pronounced bending and deformation of the larger positioning film 901. To overcome the problems caused by the larger size, the current approach is to increase the height of the second positioning part 912, which results in an increase in the overall thickness of the product.

[0013] In response to the above problems, and through continuous improvement, the inventors have proposed the following improvement scheme. Utility model content:

[0014] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a pressure roller type film applicator.

[0015] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a pressure roller type film applicator, which includes: a positioning seat and a pressure roller assembly mounted on the positioning seat. The positioning seat is provided with a positioning cavity for accommodating and positioning a mobile phone. The pressure roller assembly includes: a sliding seat slidably connected to the positioning seat and a pressure roller pivotally connected to the sliding seat. When the pressure roller moves relative to the starting end A of the positioning cavity towards the ending end B, the pressure roller presses the protective film suspended above the positioning cavity. The positioning seat is provided with a first positioning part and a first protrusion near the starting end A; the positioning seat is provided with a second positioning part and a second protrusion near the ending end B, and the second protrusion is located between the positioning cavity and the second positioning part. When applying the film, the mobile phone is placed in the positioning cavity, and the two ends of the protective film are suspended above the positioning cavity through the first positioning part and the second positioning part, respectively. The highest point of the first protrusion and the second protrusion is higher than the plane of the mobile phone screen.

[0016] Furthermore, in the above technical solution, the first positioning part is formed on the first protrusion.

[0017] Furthermore, in the above technical solution, the first protrusion adopts an elastic structure integrally formed with the positioning seat. One end of the first protrusion is connected to the positioning seat, and extends along the connection position with the positioning seat towards the positioning cavity to form an inclined surface with gradually increasing height. The first positioning part is disposed on the inclined surface.

[0018] Furthermore, in the above technical solution, a hollow portion is formed in the inclined surface, and the first positioning portion is a locking block formed in the hollow portion.

[0019] Furthermore, in the above technical solution, the second protrusion is a ridge formed on the positioning seat, and the ridge constituting the second protrusion extends to both sides along the width direction from the longitudinal center line of the positioning cavity.

[0020] Furthermore, in the above technical solution, the second protrusion is at least two protrusions formed on the positioning seat. The protrusions constituting the second protrusion are arranged along the width direction of the positioning cavity and have one of the following two characteristics: Characteristic 1: The longitudinal center line of the positioning cavity passes through one of the protrusions; Characteristic 2: The longitudinal center line of the positioning cavity passes through the gap between two adjacent protrusions, and the gap width is less than one-quarter of the width of the positioning cavity.

[0021] Furthermore, in the above technical solution, the distance between the second protrusion and the bottom edge of the mobile phone placed in the positioning cavity is greater than 0.4mm and less than 48mm.

[0022] Furthermore, in the above technical solution, the second positioning part has a limiting surface that restricts the positioning film in the protective film, and the limiting surface is not higher than the highest point of the second protrusion.

[0023] Furthermore, in the above technical solution, the end section of the positioning seat near the end B is stepped, and the second protrusion is located between the positioning cavity and the end section of the positioning seat; the second positioning part is disposed on the end section of the positioning seat, and the highest point of the second positioning part is lower than the highest point of the second protrusion.

[0024] Furthermore, in the above technical solution, the end section of the positioning seat near the end B of the positioning seat forms an inclined surface with a gradually decreasing height towards the outside of the positioning seat, and the highest position of the end section of the positioning seat constitutes the second protrusion; the second positioning part is located at the lowest position of the inclined surface of the end section of the positioning seat, and the highest point of the second positioning part is lower than the highest point of the second protrusion.

[0025] After adopting the above technical solution, this utility model has the following advantages over existing roller-type film applicators:

[0026] First, this invention provides support to the end area of ​​the screen protector 6 via the second protrusion, ensuring that the protector maintains a certain distance from the phone screen before being pressed by the pressure roller, thus preventing premature adhesion and resulting air bubbles. Simultaneously, due to the independent second protrusion, the original second positioning part in the applicator does not need to be increased, ensuring that the overall thickness of the applicator does not increase.

[0027] Secondly, the first protrusion of this utility model adopts an elastic structure, which not only ensures that the mobile phone screen protector always maintains a certain distance from the mobile phone screen before the pressure roller presses it, but also allows the pressure roller to easily pass over the first protrusion when the user starts to apply the screen protector, improving the convenience of the product and making it more user-friendly for female users with insufficient strength. Attached image description:

[0028] Figure 1 This is a three-dimensional view of the first existing pressure roller film applicator;

[0029] Figure 2 This is a 3D view of the existing second type of pressure roller film applicator;

[0030] Figure 3 This is a schematic diagram of the film application principle of an existing pressure roller film applicator;

[0031] Figure 4 This is a perspective view of Embodiment 1 of this utility model;

[0032] Figure 5 This is an exploded perspective view of Embodiment 1 of this utility model;

[0033] Figure 6 This is a front view of Embodiment 1 of this utility model;

[0034] Figure 7 This is a schematic diagram of the film application principle in Embodiment 1 of this utility model;

[0035] Figures 8A-8D This is a front view of another embodiment of the present utility model;

[0036] Figure 9 This is a perspective view of Embodiment 2 of this utility model;

[0037] Figure 10 This is an exploded perspective view of an embodiment of this utility model. Detailed implementation method:

[0038] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0039] This utility model is a roller-type film applicator, combined with Figures 4 to 7 As shown, this is a first embodiment of the present invention, which includes: a positioning seat 1 and a pressure roller assembly 2 mounted on the positioning seat 1.

[0040] The positioning base 1 is provided with a positioning cavity 10 for accommodating and positioning the mobile phone 5. The shape of the positioning cavity 10 matches the outer contour of the mobile phone 5 to which the screen protector needs to be applied. In use, the mobile phone 5 is placed in the positioning cavity 10, and the positioning cavity 10 positions the mobile phone.

[0041] The pressure roller assembly 2 includes a sliding seat 21 slidably connected to the positioning seat 1 and a pressure roller 22 pivotally connected to the sliding seat 21. The sliding seat 21 and the positioning seat 1 can adopt a slide rail structure. For example, rails 13 are provided on both sides of the positioning seat 1, and a groove or sleeve that cooperates with the rails 13 is provided on the sliding seat 21. When the sliding seat 21 drives the pressure roller 22 to move relative to each other from the starting end A to the ending end B of the positioning cavity 10, the pressure roller 22 presses the protective film 6 suspended above the positioning cavity 10.

[0042] In this invention, the pressure roller 22 is inclined, and the positioning cavity 10 is set in the same way as existing products. The pressure roller 22 is installed inclined on the sliding seat 21 relative to the positioning cavity 10, that is, the axis of the pressure roller 22 is not perpendicular to its sliding direction, and the included angle between the two is 5° to 20°. This design can completely expel air bubbles from the corners of the mobile phone screen during the application of the screen protector, ultimately achieving a perfect fit.

[0043] The positioning seat 1 is provided with a first positioning part 11 and a first protrusion 3 near the starting end A; the positioning seat 1 is provided with a second positioning part 12 and a second protrusion 4 near the ending end B, and the second protrusion 4 is located between the positioning cavity 10 and the second positioning part 12.

[0044] As described in the background section, the protective film 6 of this invention includes: an upper positioning film 61 and a lower protective film body 62. The protective film body 62 is bonded to the surface of the mobile phone screen. After complete bonding, the positioning film 61 is peeled off from the upper surface of the protective film body 62.

[0045] Similarly, the first positioning part 11 and the second positioning part 12 in this invention are used to position the positioning film 61 in the protective film 6. The protective film 6 for applying the film is suspended above the positioning cavity 10 by the first positioning part 11 and the second positioning part 12, waiting for the pressure roller 4 to press it. When applying the film, the mobile phone 5 is placed in the positioning cavity 10, and the two ends of the positioning film 61 in the protective film 6 are suspended above the positioning cavity 10 by the first positioning part 11 and the second positioning part 12 respectively. The highest point of the first protrusion 3 and the second protrusion 4 is higher than the plane of the screen of the mobile phone 5. The protective film 6 uses the first protrusion 3 and the second protrusion 4 to form a limiting barrier to ensure that the protective film 6 always maintains a certain distance from the mobile phone screen before the pressure roller 22 presses it.

[0046] In this first embodiment, the first positioning part 11 is formed on the first protrusion 3. Specifically, the first protrusion 3 adopts an elastic structure integrally formed with the positioning seat 1. One end of the first protrusion 3 is connected to the positioning seat 1, and extends along the connection position with the positioning seat 1 toward the positioning cavity 10 to form an inclined surface 30 with gradually increasing height. The first positioning part 11 is disposed on this inclined surface 30. Except for the connection position with the positioning seat 1, the other sides of the first protrusion 3 form a gap with the positioning seat 1, and the gap is used to make the first protrusion 3 form an elastic structure that can move up and down.

[0047] A hollow portion 300 is formed in the inclined surface 30 of the first protrusion 3, and the first positioning portion 11 is a locking block formed in the hollow portion 300. One or two first positioning portions 11 can be provided. In use, the locking holes on the positioning film 61 are fastened to the locking block.

[0048] The second protrusion 4 is a raised ridge formed on the positioning base 1, and the raised ridge constituting the second protrusion 4 extends along the width direction of the positioning cavity 10. The distance between the second protrusion 4 and the bottom edge of the mobile phone 5 placed in the positioning cavity 10 is typically greater than 0.4 mm and less than 48 mm. Figure 7As shown, the upper surface of the convex ridge constituting the second protrusion 4 is higher than the plane where the screen of the mobile phone 5 is located in the positioning cavity 10, and the height difference H between the two is generally 2-8mm.

[0049] The positioning seat 1 has a stepped end section 14 near its end B, and the second protrusion 4 is located between the positioning cavity 10 and the positioning seat end section 14. The second positioning part 12 is disposed on the positioning seat end section 14. The second positioning part 12 can be a pin-shaped part, and it has a limiting surface 120 that restricts the positioning film 61 in the protective film 6. Hole-shaft positioning is achieved through the locking holes on the positioning film 61 and the second positioning part 12. Of course, to ensure the stability of the positioning connection, a locking protrusion 121 can be provided on the second positioning part 12. The locking holes on the positioning film 61 are limited by the locking protrusion 121 to prevent detachment.

[0050] Because this invention adds a second protrusion 4, the second positioning part 12 does not need to be heightened, thus avoiding making the entire applicator too tall. In this embodiment, the limiting surface 120 of the second positioning part 12 is not higher than the highest point of the second protrusion 4. This creates a downward traction effect on the positioning film 61.

[0051] Combination Figure 7 As shown, in this embodiment, the mobile phone 5 is placed inside the positioning cavity 10 of the positioning seat 1, and the protective film 6 is suspended and positioned above the positioning cavity 10 by the first positioning part 11 and the second positioning part 12. When the user pushes the pressure roller assembly 2 to slide, the pressure roller 22 pivotally connected to the sliding seat 21 moves relative to the positioning seat 1. When the pressure roller 44 moves relative to the positioning cavity 10 from the starting end A to the ending end B, it rolls the protective film 6 covering the mobile phone 5 while moving relative to it. Finally, under the continuous squeezing action of the pressure roller 22, the protective film body 62 in the protective film 6 is gradually adhered to the surface of the mobile phone screen, achieving adhesion. Finally, the positioning film 61 can be peeled off from the surface of the protective film body 62.

[0052] like Figure 6 As shown, in this embodiment, the second protrusion 4 is a raised ridge formed on the positioning base 1. The length of this raised ridge is approximately the same as the width of the positioning cavity 10. This provides limiting support for the protective film 6 not only in the longitudinal direction (the length direction of the phone) but also in the transverse direction (the width direction of the phone). In actual production, it is not required that the length of the second protrusion 4 be the same as the width of the positioning cavity 10. Figure 8AAs shown, this is another embodiment of the present invention. The second protrusion 4 is located at the center line of the longitudinal direction of the positioning cavity 10, and the protruding ridge constituting the second protrusion 4 extends to both sides from the longitudinal center line of the positioning cavity 10 along the width direction. That is, the second protrusion 4 should be located in the transverse center region of the positioning cavity 10. This is to provide limiting support for the protective film 6 in the transverse direction, preventing bending deformation of the protective film 6 due to excessive width. In this embodiment, the length of the second protrusion 4 is less than the width of the positioning cavity 10.

[0053] In addition, such as Figure 8B As shown, the second protrusion 4 can also be configured as at least two protrusions formed on the positioning base 1, and the protrusions constituting the second protrusion 4 are arranged along the width direction of the positioning cavity 10. The longitudinal centerline of the positioning cavity 10 passes through the gap between two adjacent protrusions, and the gap width W is less than one-quarter of the width of the positioning cavity 10. This design is adopted because: for larger mobile phones, the width of the corresponding protective film 6 also increases, and the protective film 6 will also form a certain bending deformation in the width direction. If the gap width W is too large, the second protrusion 4 cannot provide support for the protective film 6 in the width direction, and the centerline area of ​​the end of the protective film 6 may still prematurely contact the mobile phone screen.

[0054] The second protrusion 4 in Embodiment 1 can also be implemented in a manner such as... Figure 8C , Figure 8D As shown.

[0055] See Figure 9 , Figure 10 As shown, this is Embodiment Two of the present invention. The difference between Embodiment Two and Embodiment One is that the positioning seat 1 in Embodiment Two has a gradually decreasing slope towards the outside of the positioning seat 1 near its end B. The highest point of this positioning seat end segment 14 constitutes the second protrusion 4. The second positioning part 12 is located at the lowest point of the slope of the positioning seat end segment 14, and the highest point of the second positioning part 12 is lower than the highest point of the second protrusion 4. The usage of Embodiment Two is the same as that of Embodiment One, and will not be repeated here.

[0056] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A roller-type film applicator, comprising: A positioning seat (1) and a pressure roller assembly (2) mounted on the positioning seat (1), wherein the positioning seat (1) is provided with a positioning cavity (10) for accommodating and positioning a mobile phone (5), and the pressure roller assembly (2) includes: a sliding seat (21) slidably connected to the positioning seat (1) and a pressure roller (22) pivotally connected to the sliding seat (21), wherein when the pressure roller (22) moves relative to the positioning cavity (10) from the starting end (A) to the ending end (B), the pressure roller (22) presses against the protective film (6) suspended above the positioning cavity (10), characterized in that: The positioning seat (1) is provided with a first positioning part (11) and a first protrusion (3) near the starting end (A); The positioning seat (1) is provided with a second positioning part (12) and a second protrusion (4) near the end (B), and the second protrusion (4) is located between the positioning cavity (10) and the second positioning part (12). When applying the screen protector, the mobile phone (5) is placed inside the positioning cavity (10). The two ends of the protective film (6) are suspended above the positioning cavity (10) through the first positioning part (11) and the second positioning part (12) respectively. The highest point of the first protrusion (3) and the second protrusion (4) is higher than the plane where the screen of the mobile phone (5) is located.

2. The pressure roller type film applicator according to claim 1, characterized in that: The first positioning part (11) is formed on the first protrusion (3).

3. The pressure roller type film applicator according to claim 2, characterized in that: The first protrusion (3) adopts an elastic structure integrally formed with the positioning seat (1). One end of the first protrusion (3) is connected to the positioning seat (1), and extends along the connection position with the positioning seat (1) toward the positioning cavity (10) to form an inclined surface (30) with gradually increasing height. The first positioning part (11) is disposed on the inclined surface (30).

4. The pressure roller type film applicator according to claim 3, characterized in that: The inclined surface (30) has a hollow portion (300) formed therein, and the first positioning portion (11) is a locking block formed at the hollow portion (300).

5. The pressure roller type film applicator according to claim 1, characterized in that: The second protrusion (4) is a ridge formed on the positioning seat (1). The ridge constituting the second protrusion (4) extends to both sides from the longitudinal center line of the positioning cavity (10) along the width direction.

6. The pressure roller type film applicator according to claim 1, characterized in that: The second protrusion (4) consists of at least two protrusions formed on the positioning seat (1). The protrusions constituting the second protrusion (4) are arranged along the width direction of the positioning cavity (10) and have one of the following two characteristics: Feature 1: The longitudinal centerline of the positioning cavity (10) passes through one of the protrusions; Feature 2: The longitudinal centerline of the positioning cavity (10) passes through the gap between two adjacent protrusions, and the gap width is less than one-quarter of the width of the positioning cavity (10).

7. The pressure roller type film applicator according to claim 1, characterized in that: The distance between the second protrusion (4) and the bottom edge of the mobile phone (5) placed in the positioning cavity (10) is greater than 0.4 mm and less than 48 mm.

8. The pressure roller type film applicator according to any one of claims 1-7, characterized in that: The second positioning part (12) has a limiting surface (120) for the positioning film (61) in the limiting protective film (6), which is not higher than the highest point of the second protrusion (4).

9. The pressure roller type film applicator according to claim 8, characterized in that: The positioning seat (1) near the end (B) of the positioning seat (1) has a stepped shape at the end section (14). The second protrusion (4) is located between the positioning cavity (10) and the end section (14) of the positioning seat. The second positioning part (12) is disposed on the end section (14) of the positioning seat, and the highest point of the second positioning part (12) is lower than the highest point of the second protrusion (4).

10. The pressure roller type film applicator according to claim 8, characterized in that: The positioning seat (1) near the end (B) has a gradually decreasing slope towards the outside of the positioning seat (1), and the highest position of the positioning seat (14) forms the second protrusion (4); the second positioning part (12) is located at the lowest position of the slope of the positioning seat (14), and the highest point of the second positioning part (12) is lower than the highest point of the second protrusion (4).

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