Rolling dust-free film pasting device with improved upper positioning film fixing structure

Abstract

The utility model relates to the technical field of film sticking devices, in particular to a rolling dust-free film sticking device with an improved upper positioning film fixing structure, which comprises a film sticking device main body, a positioning film and a rolling component, a screen positioning groove is arranged on the film sticking device main body, a buckling groove is arranged on the film sticking device main body at a position in front of the screen positioning groove, and the positioning film is arranged in the buckling groove. A buckling portion is formed on the inner side of the buckling groove, at least one positioning column is arranged at the position, behind the screen positioning groove, of the film pasting device body, and the front end of the positioning film is provided with an extending portion extending into the buckling groove and a buckling opening formed in the extending portion and used for being buckled to the buckling portion. A positioning opening used for being arranged on the positioning column in a sleeving mode is formed in the rear end of the positioning film. The front portion of the positioning film is fixed through the buckling position groove and the buckling position part, an original positioning column fixing mode is changed, conflicts with the positioning column in the rolling process of a roller are effectively avoided, the smoothness of film pasting operation is guaranteed, and compact layout of the structure is achieved.

Description

Technical Field

[0001] This utility model relates to the field of film applicator technology, and in particular to a roller dust-free film applicator with an improved upper positioning film fixing structure. Background Technology

[0002] The dust-free screen protector applicator works by attaching a positioning film to the top surface of the protective film, then fixing the protective film to the applicator using positioning posts. Next, a tear-off pull tab on the release liner of the protective film positions both the screen and the protective film on the applicator. The release liner is then torn open in the reverse direction by pulling the pull tab again. Finally, rollers press the protective film onto the screen. This process ensures that the adhesive side of the protective film is positioned and gap-fitted with the screen after being torn open. While existing film applicators can achieve dust-free application, the use of positioning posts to fix the film in place causes friction between the rollers and the positioning posts. Furthermore, the existing rollers and applicators typically use a sliding rail and slider structure for sliding contact, but this structure affects the roller height, potentially preventing the rollers from fully contacting the protective film during rolling. This results in insufficient force in some areas, affecting the film application quality. Therefore, it is necessary to propose an improved technical solution to address these issues. Utility Model Content

[0003] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0004] An improved upper positioning film fixing structure roller dust-free film applicator includes an applicator body, a positioning film and a roller component. The applicator body has a screen positioning groove, a snap-fit ​​groove at the front of the screen positioning groove, a snap-fit ​​part formed inside the snap-fit ​​groove, and at least one positioning post at the rear of the applicator body. The front end of the positioning film has an extension that extends into the snap-fit ​​groove and a snap-fit ​​opening on the extension for snapping onto the snap-fit ​​part. The rear end of the positioning film has a positioning opening for fitting onto the positioning post.

[0005] The rolling component includes a handle and a roller. The handle has connecting parts at both ends, and dovetail grooves matching the ends of the roller are provided on the opposite surfaces of the two connecting parts. The ends of the roller are rotatably connected to the handle by engaging with the dovetail grooves. Limiting strips are formed on both sides of the film applicator body. The two connecting parts abut against the two limiting strips, and at least one limiting part corresponding to the lower limit strip is provided on the opposite surfaces of the two connecting parts. The limiting parts and the limiting strips are spaced together during the rolling operation.

[0006] Preferably, the locking groove extends through the back of the film applicator body.

[0007] Preferably, the front end of the applicator body is further extended to form a hook.

[0008] Preferably, a lifting strip is also formed at the rear position of the limiting strip, the handle part can abut against the lifting strip and be lifted upward, and after the handle part abuts against the lifting strip, the limiting part abuts against the lower end of the limiting strip, so that the handle part is locked on the body of the applicator.

[0009] Preferably, the upper end of the limiting part is a plane, and the limiting part abuts against the lower end of the limiting strip through the plane.

[0010] Preferably, at least one abutment strip is provided on each of the two opposite surfaces of the connecting parts, and the abutment strip is used to abut against the side of the limiting strip.

[0011] Preferably, the positioning post is provided with a stepped structure, and the positioning film is fitted onto the positioning post through the positioning port and then abuts against the stepped structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The front part of the positioning film is fixed by the locking groove and locking part, which changes the original positioning post fixing method and effectively avoids the conflict with the roller during rolling. This ensures the smoothness of the film application operation and achieves a compact layout. The spacing design between the limiting strip and the limiting part cleverly restricts the rolling component to the main body of the film applicator, ensuring operational stability while reducing unnecessary constraints on the handle. During the rolling operation, only the two ends of the handle abut against the limiting strips on both sides of the main body of the film applicator, which greatly ensures that the roller can fit tightly with the protective film, making the force on all parts of the protective film uniform and significantly improving the overall effect and quality of film application.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] 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 these drawings without creative effort.

[0016] Figure 1 This is a structural schematic diagram of the present invention in use;

[0017] Figure 2 This is a structural schematic diagram of the main body of the film applicator and the rolling component of this utility model;

[0018] Figure 3 This is a schematic diagram of another embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram showing the disassembled structure of the rolling component in this utility model.

[0020] The reference numerals and names in the figure are as follows:

[0021] The screen protector body 10, screen positioning groove 11, snap-fit ​​groove 12, snap-fit ​​part 13, positioning post 14, limiting strip 15, lifting strip 16, abutting strip 17, stepped structure 18, positioning film 20, extension part 21, snap-fit ​​opening 22, positioning opening 23, rolling part 30, handle part 31, roller 32, connecting part 33, dovetail groove 34, limiting part 35. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Please see Figure 1-4 In this embodiment of the present invention, an improved upper positioning film fixing structure roller dust-free film applicator includes an applicator body 10, a positioning film 20 and a roller component 30. The applicator body 10 has a screen positioning groove 11, a snap-fit ​​groove 12 is provided on the applicator body 10 at the front position of the screen positioning groove 11, a snap-fit ​​part 13 is formed on the inner side of the snap-fit ​​groove 12, and at least one positioning post 14 is provided on the applicator body 10 at the rear position of the screen positioning groove 11. The front end of the positioning film 20 has an extension 21 extending into the snap-fit ​​groove 12 and a snap-fit ​​opening 22 provided on the extension 21 for snapping onto the snap-fit ​​part 13. The rear end of the positioning film 20 has a positioning opening 23 for fitting onto the positioning post 14.

[0024] The rolling component 30 includes a handle portion 31 and a roller 32. The handle portion 31 has connecting portions 33 at both ends. The two connecting portions 33 have dovetail grooves 34 on their opposite surfaces that match the two ends of the roller 32. The two ends of the roller 32 are rotatably connected to the handle portion 31 by engaging with the dovetail grooves 34. The two sides of the film applicator body 10 are formed with limiting strips 15. The two connecting portions 33 abut against the two limiting strips 15. The two connecting portions 33 also have at least one limiting portion 35 on their opposite surfaces that corresponds to the lower part of the limiting strip 15. During the rolling operation, the limiting portion 35 and the limiting strip 15 are spaced together.

[0025] In the above technical solution, when using the roller dust-free film applicator, the screen to be filmed is placed in the screen positioning groove 11, and the protective film is pre-fixed on the positioning film 20. The adhesive side of the protective film is attached with a release film with a pull strap so that the pull strap can be pulled to tear the release film in the opposite direction. When positioning the protective film, the front extension 21 of the positioning film 20 is first inserted into the snap-fit ​​groove 12 of the film applicator body 10, and the snap-fit ​​opening 22 is used to snap it with the snap-fit ​​part 13. The rear end is fitted onto the positioning post 14 through the positioning opening 23, thus completing the fixation of the positioning film 20 on the film applicator body 10. After positioning, the release film is torn from the adhesive side of the protective film by pulling the pull strap from the front end of the release film to the rear. Then, the operator pushes the handle part 31, and under the guidance of the limiting strip 15 and the limiting part 35, the roller 32 rolls smoothly along the surface of the protective film, applying uniform pressure to the protective film so that the protective film is tightly attached to the screen, thus completing the dust-free film application operation.

[0026] This design, utilizing the structure of the locking groove 12 and the locking part 13, ensures that the front part of the positioning film 20 will not conflict with the roller 32 when it is fixed, thus guaranteeing the smoothness of the film application operation and the compactness of the structure. The spacing between the limiting strip 15 and the limiting part 35 allows the rolling component 30 to be confined on the film applicator body 10 without excessively restricting the handle part 31. During the rolling operation, the handle part 31 will not come into contact with the film applicator body 10 except for the connecting parts 33 at both ends, which will abut against the limiting strips 15 on both sides of the film applicator body 10. This ensures that the roller 32 fits tightly with the protective film, improving the film application effect.

[0027] Please see Figure 1-2 Based on the above technical solution, it is further proposed that the snap-fit ​​groove 12 extends through the back of the film applicator body 10, so that the snap-fit ​​groove 12 can act as a hook or other structure to hang and display or store the film applicator, making full use of the structure of the snap-fit ​​groove 12. For example... Figure 3 As shown, another embodiment of this technical solution is provided. When the snap-fit ​​groove 12 is not used as a hook or other structure, a hook structure can be further extended at the front end of the film applicator body 10, which is set according to actual needs.

[0028] Please see Figure 1 , Figure 2 and Figure 4 Based on the above technical solution, it is further proposed that a lifting strip 16 is formed at the rear of the limiting strip 15. The handle part 31 can abut against the lifting strip 16 and be lifted upward. After the handle part 31 abuts against the lifting strip 16, the limiting part 35 abuts against the lower end of the limiting strip 15, so that the handle part 31 is locked onto the film applicator body 10. The lifting strip 16 provided at the rear of the limiting strip 15 can lift the handle part 31 upward when it abuts, so that the limiting part 35 can accurately abut against the lower end of the limiting strip 15. The handle 31 is securely fastened to the screen protector body 10, allowing the operator to fix the roller component 30 after screen protector application. This prevents the roller component 30 from moving and interfering with screen removal. The upper end of the limiting part 35 is flat, and it abuts against the lower end of the limiting strip 15, ensuring full contact between the limiting strip 15 and the limiting part 35 when the handle 31 is secured to the lifting strip 16. This improves the stability of the handle 31 when it is secured to the rear end of the screen protector body 10. At least one abutting strip 17 is also provided on the opposing surfaces of the two connecting parts 33. The abutting strip 17 abuts against the side of the limiting strip 15, further restricting the lateral movement of the roller component 30. This improves the guiding accuracy of the roller 32 during rolling, ensuring that the roller 32 always rolls in a straight line along the protective film surface, effectively improving the flatness and adhesion of the screen protector and comprehensively guaranteeing the quality of the application.

[0029] Please see Figure 2 Based on the above technical solution, it is further proposed that a stepped structure 18 is provided on the positioning post 14. After the positioning film 20 is put on the positioning post 14 through the positioning port 23, it abuts against the stepped structure 18. After the protective film is positioned, its rear part will be raised due to the stepped structure 18, so that the protective film is in a certain tilted and raised setting. This prevents the protective film from being attached to the screen in advance before the roller 32 rolls, thus avoiding the occurrence of air bubbles after the roll is applied. This further improves the roll application effect.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A roller-type dust-free film applicator with an improved upper positioning film fixing structure, characterized in that, The device includes a screen applicator body (10), a positioning film (20), and a rolling component (30). The screen applicator body (10) has a screen positioning groove (11) and a snap-fit ​​groove (12) located in front of the screen positioning groove (11). A snap-fit ​​part (13) is formed inside the snap-fit ​​groove (12). At least one positioning post (14) is provided on the screen applicator body (10) located behind the screen positioning groove (11). The front end of the positioning film (20) has an extension (21) extending into the snap-fit ​​groove (12) and a snap-fit ​​opening (22) on the extension (21) for snapping onto the snap-fit ​​part (13). The rear end of the positioning film (20) has a positioning opening (23) for fitting onto the positioning post (14). The rolling component (30) includes a handle (31) and a roller (32). The handle (31) has connecting parts (33) at both ends. The two connecting parts (33) have dovetail grooves (34) matching the two ends of the roller (32) on their opposite surfaces. The two ends of the roller (32) are rotatably connected to the handle (31) by engaging with the dovetail grooves (34). The two sides of the film applicator body (10) are formed with limit strips (15). The two connecting parts (33) abut against the two limit strips (15). The two connecting parts (33) also have at least one limit part (35) corresponding to the limit strip (15) on their opposite surfaces. The roller (32) is spaced apart from the limit strip (15) during the rolling operation.

2. The improved upper positioning film fixing structure of the roller dust-free film applicator according to claim 1, characterized in that, The locking groove (12) runs through the back of the body (10) of the applicator.

3. A roller-type dust-free applicator with an improved upper positioning film fixing structure according to claim 1 or 2, characterized in that, The front end of the film applicator body (10) is also formed with a hook.

4. The improved upper positioning film fixing structure of the roller dust-free film applicator according to claim 1, characterized in that, A lifting strip (16) is also formed at the rear of the limiting strip (15). The handle (31) can abut against the lifting strip (16) and rise upward. After the handle (31) abuts against the lifting strip (16), the limiting part (35) abuts against the lower end of the limiting strip (15), so that the handle (31) is locked on the body (10) of the applicator.

5. A roller-type dust-free applicator with an improved upper positioning film fixing structure according to claim 4, characterized in that, The upper end of the limiting part (35) is a plane, and the limiting part (35) abuts against the lower end of the limiting strip (15) through the plane.

6. The improved upper positioning film fixing structure of the roller dust-free applicator according to claim 1, characterized in that, At least one abutment strip (17) is provided on the opposite surfaces of the two connecting parts (33), and the abutment strip (17) is used to abut against the side of the limiting strip (15).

7. A roller-type dust-free applicator with an improved upper positioning film fixing structure according to claim 1, characterized in that, The positioning post (14) is provided with a stepped structure (18). The positioning film (20) is fitted onto the positioning post (14) through the positioning port (23) and then abuts against the stepped structure (18).

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