A fixing device for a camera lens optical film

Abstract

The application discloses a fixing device for a camera lens optical film, and belongs to the technical field of optical films, which comprises an outer fixing sheet, an outer limiting ring fixed to the inner side of the outer fixing sheet, an outer limiting assembly in sealing cooperation with the outer fixing sheet, a center hole is formed in the middle of the outer fixing sheet, and the outer limiting ring is installed at the edge of the center hole of the outer fixing sheet; the fixing device further comprises an inner fixing sheet, an inner limiting ring fixed to the outer side of the inner fixing sheet, an inner limiting assembly in sealing cooperation with the inner fixing sheet, a center hole is formed in the middle of the inner fixing sheet, and the inner limiting ring is installed at the edge of the center hole of the inner fixing sheet; the outer limiting assembly and the inner limiting assembly are connected through fasteners, the outer limiting assembly and the inner limiting assembly are simultaneously fixed to the inner side of an electronic device body, and the optical film is compressed between the outer limiting ring and the inner limiting ring. The device can help the optical film to better resist external force interference and reduce the risk of damage caused by external force.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of optical films, and particularly relates to a fixing device for a camera lens optical film. BACKGROUND

[0002] With the increasing importance of personal privacy, electronic products as important storage and processing devices of personal information, the privacy protection problem of the camera lens of the electronic products has been increasingly concerned. The lens optical film can effectively prevent unauthorized shooting and peeping, meet the urgent needs of users in privacy protection, and promote the application and development of the lens optical film in the market. In the long-term use of the optical film, it may be affected by external environmental factors such as temperature change, wind pressure, vibration, etc. If the position of the optical film moves or loosens, the light adjustment area may be inaccurate and the light adjustment may be uneven. SUMMARY

[0003] Therefore, the purpose of the application is to provide a fixing device for a camera lens optical film, which can help the optical film better resist these external force disturbances and reduce the risk of damage caused by external forces.

[0004] To achieve the above purpose, the application provides the following technical scheme.

[0005] The fixing device for the camera lens optical film comprises an outer fixing sheet, an outer limiting ring fixed on the inner side of the outer fixing sheet, an outer limiting assembly in sealing cooperation with the outer fixing sheet, a center hole is formed in the middle of the outer fixing sheet, and the outer limiting ring is installed at the edge of the center hole of the outer fixing sheet; further comprising an inner fixing sheet, an inner limiting ring fixed on the outer side of the inner fixing sheet, an inner limiting assembly in sealing cooperation with the inner fixing sheet, a center hole is formed in the middle of the inner fixing sheet, and the inner limiting ring is installed at the edge of the center hole of the inner fixing sheet; the outer limiting assembly and the inner limiting assembly are connected through fasteners, the outer limiting assembly and the inner limiting assembly are fixed on the inner side of the electronic device body at the same time, the optical film is compressed between the outer limiting ring and the inner limiting ring, and the outer limiting ring and the inner limiting ring are made of elastic material.

[0006] Further, the outer limiting assembly comprises an outer limiting seat, a first middle limiting seat connected with the outer limiting seat, an outer stepped groove is formed on the inner side of the outer limiting seat, an outer ring groove is formed on the outer stepped groove, a sealing ring is installed in the outer ring groove, first stepped grooves are formed on the inner and outer sides of the first middle limiting seat, first ring grooves are formed on the first stepped grooves, and sealing rings are installed in the first ring grooves; the outer limiting groove for the outer fixing sheet is formed by cooperation between the outer stepped groove and the first stepped groove, and the sealing rings on the outer ring groove and the outer side of the first middle limiting seat are respectively connected and sealed with the two sides of the outer fixing sheet.

[0007] Furthermore, the outer limiting seat includes an outer ring seat and an inner ring seat that rotatably engages with the outer ring seat. A pressure shell is fixed on the inner ring seat, and an air inlet and an air outlet are installed on the pressure shell. A sealing membrane is installed on the outer side of the pressure shell.

[0008] Furthermore, an additional ring is detachably installed on the outer end of the pressure shell, and a protective glass is installed on the additional ring, which is located outside the sealing membrane.

[0009] Furthermore, the inner ring seat is integrally connected to the outer cylinder, the inner cylinder is threadedly connected to the inner side of the outer cylinder, the inner end face of the inner cylinder is rotatably engaged with the outer fixing plate, and an elastic tensioning device is installed between the outer fixing plate and the inner ring seat.

[0010] Furthermore, a ball bearing is provided between the inner end face of the inner cylinder and the outer fixing plate, a guide rail is fixed on the inner side of the outer ring seat, and a sliding groove is provided on the outer side of the inner cylinder. The guide rail and the sliding groove of the inner cylinder slide together vertically.

[0011] Furthermore, the inner limiting assembly includes an inner limiting seat and a second middle limiting seat connected to the inner limiting seat. The outer side of the inner limiting seat has an inner stepped groove, and an inner annular groove is formed on the inner stepped groove. A sealing ring is installed in the inner annular groove. The inner and outer sides of the second middle limiting seat both have second stepped grooves, and second annular grooves are formed on the second stepped grooves. A sealing ring is installed in the second annular groove. The inner stepped groove and the second stepped groove cooperate to form an inner limiting groove for inserting an inner fixing piece. The inner annular groove and the sealing ring on the inner side of the second middle limiting seat are respectively connected and sealed to both sides of the inner fixing piece. The first middle limiting seat and the second middle limiting seat are connected, and the sealing ring on the inner side of the first middle limiting seat and the sealing ring on the outer side of the second middle limiting seat are respectively connected and sealed to both sides of the optical film.

[0012] Furthermore, a clamp is detachably connected to the inner side of the inner fixing plate, and a rotating cylinder is connected to the inner side of the clamp. A rotating disk is integrally formed and installed at the lower end of the rotating cylinder, and the rotating disk rotates in conjunction with the electronic device body.

[0013] The beneficial effects of this invention are as follows:

[0014] Traditional optical films are fixed with adhesive, which is prone to failure after long-term use. When the optical film is affected by temperature changes, wind pressure, vibration, etc., its position may shift or loosen, potentially leading to inaccurate dimming areas and uneven dimming. This invention discloses a fixing device for an optical film in a camera lens. The optical film is pressed between an outer limiting ring and an inner limiting ring, and is fixed by the elastic limiting rings. Even if the optical film loosens under external conditions, it can be quickly fixed by the elastic limiting action, thus avoiding the occurrence of technical problems.

[0015] In the device disclosed in this invention, the outer fixing plate is rotated and engaged by the outer limiting component, and the inner fixing plate is rotated and engaged by the inner limiting component. When the optical film is slightly twisted, the rotation limiting effect of the fixing plate and the limiting component can also solve problems such as connection failure caused by the fixed connection with the electronic device body.

[0016] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized through the following description. Attached Figure Description

[0017] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0018] Figure 1 This is a schematic diagram of the structure of the device of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the device of the present invention;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a cross-sectional view of the device of the present invention;

[0022] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0023] Figure 6 This is a schematic diagram of the clamp structure.

[0024] The following are the markings in the attached diagram: outer fixing plate 1, outer limiting ring 2, outer limiting assembly 3, inner fixing plate 4, inner limiting ring 5, inner limiting assembly 6, optical film 7, outer limiting seat 8, first middle limiting seat 9, outer stepped groove 10, outer ring groove 11, sealing ring 12, first stepped groove 13, first ring groove 14, outer ring seat 15, inner ring seat 16, pressure shell 17, air inlet 18, air outlet 19, sealing film 20, additional ring 21, protective glass 22, outer cylinder 23, inner cylinder 24, elastic tensioning device 25, ball bearing 26, guide rail 27, slide groove 28, inner limiting seat 29, second middle limiting seat 30, inner stepped groove 31, inner ring groove 32, second stepped groove 33, second ring groove 34, clamp 35, rotating cylinder 36, rotating disk 37. Detailed Implementation

[0025] like Figures 1-6 As shown, the present invention discloses a fixing device for a camera lens optical film, including an outer fixing piece 1, an outer limiting ring 2 fixed inside the outer fixing piece 1, and an outer limiting component 3 connected and sealed with the outer fixing piece 1. The outer fixing piece 1 is annular, with a central hole formed in the middle of the outer fixing piece 1. The outer limiting component 3 is located at the outer edge of the outer fixing piece 1, and the outer limiting ring 2 is installed at the edge of the central hole of the outer fixing piece 1. The outer fixing piece 1 contacts the camera lens optical film 7 of the electronic device through the outer limiting ring 2, that is, the outer fixing piece 1 is located on the outside of the electronic device body relative to the optical film 7.

[0026] Symmetrical to the outer fixing plate 1 relative to the optical film 7, the fixing plate of the present invention also includes an inner fixing plate 4, an inner limiting ring 5 fixed to the outside of the inner fixing plate 4, and an inner limiting assembly 6 connected and sealed with the inner fixing plate 4. A central hole is formed in the middle of the inner fixing plate 4, and the inner limiting ring 5 is installed at the edge of the central hole of the inner fixing plate 4; the inner limiting ring 5 is located on the side of the optical film 7 away from the outer limiting ring 2. The outer fixing plate 1 and the inner fixing plate 4 are symmetrically arranged on both sides of the optical film 7 relative to the optical film 7, and the outer limiting ring 2 and the inner limiting ring 5 are symmetrically arranged on both sides of the optical film 7 relative to the optical film 7.

[0027] The outer limiting component 3 and the inner limiting component 6 are connected by fasteners, specifically bolts. It is certain that when the outer limiting component 3 and the inner limiting component 6 are connected and engaged, the engagement of the outer limiting ring 2 and the inner limiting ring 5 can at least compress the optical film 7. This compression method also avoids damage to the conductive layer of the optical film 7. The outer limiting component 3 and the inner limiting component 6 are simultaneously fixed to the inner side of the electronic device body. The optical film 7 is compressed between the outer limiting ring 2 and the inner limiting ring 5, which are made of elastic material, preferably silicone. Because the optical film 7 is compressed between the outer limiting ring 2 and the inner limiting ring 5, and is fixed by the elastic limiting rings, even if the optical film 7 becomes loose under external conditions, it can be quickly fixed again through the elastic limiting action, thus avoiding technical problems.

[0028] This invention effectively improves the axial positioning of the optical film 7 by using an elastic pressure setting. It also prevents edge wear of the optical film 7, protecting its internal conductive lines and liquid crystal molecules from damage.

[0029] In this embodiment, the outer limiting component 3 includes an outer limiting seat 8 and a first middle limiting seat 9 connected to the outer limiting seat 8. Both the outer limiting seat 8 and the first middle limiting seat 9 are annular. An outer stepped groove 10 is formed on the inner side of the outer limiting seat 8, i.e., the side facing the optical film 7. An outer ring groove 11 is formed on the outer stepped groove 10. There are two sets of outer ring grooves 11. A sealing ring 12 is installed in each set of outer ring grooves 11. A first stepped groove 13 is formed on both the inner and outer sides of the first middle limiting seat 9. A first ring groove 14 is formed on the first stepped groove 13. A sealing ring 12 is installed in the first ring groove 14. The outer stepped groove 10 and the first stepped groove 13 cooperate to form an outer limiting groove for the outer fixing piece 1 to be inserted. The sealing ring 12 on the outer side of the outer ring groove 11 and the first middle limiting seat 9 are respectively connected and sealed to both sides of the outer fixing piece 1.

[0030] In this invention, the sealing ring 12 and the outer fixing piece 1 are frictionally engaged. In some other embodiments, the sealing ring 12 and the outer fixing piece 1 can be fixedly connected, so that the sealing ring 12 can rotate within the outer ring groove 11 and the first ring groove 14, thereby realizing the rotational frictional engagement between the outer fixing piece 1 and the outer limiting component 3.

[0031] In this embodiment, the outer limiting seat 8 includes an outer ring seat 15 and an inner ring seat 16 that rotatably engages with the outer ring seat 15. A pressure shell 17 is fixed on the inner ring seat 16. An air inlet 18 and an air outlet 19 are installed on the pressure shell 17. Valves are installed on the inner sides of both the air inlet 18 and the air outlet 19. A sealing membrane 20 is installed on the outer side of the pressure shell 17. By setting the annular pressure shell 17, a high-pressure sealing area can be locally formed on the inner side of the pressure shell 17 to achieve a sealing effect. At the same time, the sealing structure of the multi-layer sealing ring 12 is designed to increase the sealing effect, prevent impurities from intruding and interfering, and avoid damage to the optical film 7.

[0032] In this embodiment, an additional ring 21 is detachably installed on the outer end of the pressure shell 17. A protective glass 22 is installed on the additional ring 21. The protective glass 22 is located outside the sealing membrane 20. By setting the protective glass 22, the sealing membrane 20 and the internal structure can be protected, increasing the lifespan of the device. The sealing membrane 20 can expand under pressure, which also reduces the stress on the optical membrane 7, ensuring high-pressure sealing while reducing damage to the optical membrane 7.

[0033] In this embodiment, an outer cylinder 23 is integrally connected to the inner side of the inner ring seat 16, and an inner cylinder 24 is threadedly connected to the inner side of the outer cylinder 23. The inner end face of the inner cylinder 24 is rotatably engaged with the outer fixing plate 1, and an elastic tensioning device 25 is installed between the outer fixing plate 1 and the inner ring seat 16. When the outer cylinder 23 is rotated, the inner cylinder 24, which is threadedly engaged with it, can be driven to move axially to press the outer fixing plate 1, thereby fine-tuning the pressure to adapt to actual needs. The elastic tensioning device 25 provides elastic tension to the outer fixing plate 1, and can release the pressure on the optical film 7 in time after the inner cylinder 24 loosens.

[0034] In this embodiment, a ball bearing 26 is provided between the inner end face of the inner cylinder 24 and the outer fixing plate 1, which can reduce frictional resistance and make the rotational engagement smoother. A guide rail 27 is fixed on the inner side of the outer ring seat 15, and a sliding groove 28 is provided on the outer side of the inner cylinder 24. The guide rail 27 and the sliding groove 28 of the inner cylinder 24 slide together vertically.

[0035] In this embodiment, similar to the structure of the outer limiting component 3, the inner limiting component 6 disclosed in this invention includes an inner limiting seat 29 and a second middle limiting seat 30 connected to the inner limiting seat 29. An inner stepped groove 31 is formed on the outer side of the inner limiting seat 29, and an inner annular groove 32 is formed on the inner stepped groove 31. A sealing ring 12 is installed in the inner annular groove 32. Second stepped grooves 33 are formed on both the inner and outer sides of the second middle limiting seat 30, and second annular grooves 34 are formed on the second stepped grooves 33. A sealing ring 12 is installed in the groove 34. The inner stepped groove 31 and the second stepped groove 33 cooperate to form an inner limiting groove for the inner fixing piece 4 to be inserted. The sealing ring 12 on the inner side of the inner ring groove 32 and the second middle limiting seat 30 are respectively connected and sealed to both sides of the inner fixing piece 4. The first middle limiting seat 9 and the second middle limiting seat 30 are connected. The sealing ring 12 on the inner side of the first middle limiting seat 9 and the sealing ring 12 on the outer side of the second middle limiting seat 30 are respectively connected and sealed to both sides of the optical film 7.

[0036] In this embodiment, a clamp 35 is detachably connected to the inner side of the inner fixing plate 4, and a rotating cylinder 36 is connected to the inner side of the clamp 35. A rotating disk 37 is integrally formed and installed at the lower end of the rotating cylinder 36. The rotating disk 37 rotates and cooperates with the electronic device body, which can improve the stability of the rotational cooperation.

[0037] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A fixing device for an optical film on a camera lens, characterized in that: The device includes an outer fixing plate, an outer limiting ring fixed inside the outer fixing plate, and an outer limiting assembly that is connected and sealed with the outer fixing plate. The outer fixing plate has a central hole, and the outer limiting ring is installed at the edge of the central hole. It also includes an inner fixing plate, an inner limiting ring fixed outside the inner fixing plate, and an inner limiting assembly that is connected and sealed with the inner fixing plate. The inner fixing plate has a central hole, and the inner limiting ring is installed at the edge of the central hole. The outer limiting assembly and the inner limiting assembly are connected and sealed together. Fastener connection, the outer limiting component and the inner limiting component are simultaneously fixed to the inner side of the electronic device body, the optical film is pressed between the outer limiting ring and the inner limiting ring, the outer limiting ring and the inner limiting ring are made of elastic material; the outer limiting component includes an outer limiting seat and a first middle limiting seat connected to the outer limiting seat, the inner side of the outer limiting seat has an outer stepped groove, the outer stepped groove has an outer ring groove, a sealing ring is installed in the outer ring groove, and the inner and outer sides of the first middle limiting seat have first stepped grooves. The first stepped groove has a first annular groove, and a sealing ring is installed in the first annular groove. The outer stepped groove and the first stepped groove cooperate to form an outer limiting groove for the insertion of the outer fixing piece. The sealing rings on the outer annular groove and the outer side of the first middle limiting seat are respectively connected and sealed to both sides of the outer fixing piece. The inner limiting assembly includes an inner limiting seat and a second middle limiting seat connected to the inner limiting seat. The outer side of the inner limiting seat has an inner stepped groove, and an inner annular groove is formed on the inner stepped groove. A sealing ring is installed in the inner annular groove. The inner and outer sides of the second central limiting seat are provided with second stepped grooves, and second annular grooves are provided on the second stepped grooves. A sealing ring is installed in the second annular groove. The inner stepped groove and the second stepped groove cooperate to form an inner limiting groove for the inner fixing piece to be inserted. The inner annular groove and the sealing ring on the inner side of the second central limiting seat are respectively connected and sealed to both sides of the inner fixing piece. The first central limiting seat and the second central limiting seat are connected. The sealing ring on the inner side of the first central limiting seat and the sealing ring on the outer side of the second central limiting seat are respectively connected and sealed to both sides of the optical film.

2. The fixing device for an optical film of a camera lens according to claim 1, characterized in that: The outer limiting seat includes an outer ring seat and an inner ring seat that rotatably engages with the outer ring seat. A pressure shell is fixed on the inner ring seat, and an air inlet and an air outlet are installed on the pressure shell. A sealing membrane is installed on the outer side of the pressure shell.

3. The fixing device for an optical film of a camera lens according to claim 2, characterized in that: An additional ring is detachably installed on the outer end of the pressure shell, and a protective glass is installed on the additional ring. The protective glass is located outside the sealing membrane.

4. The fixing device for an optical film of a camera lens according to claim 3, characterized in that: The inner ring seat is integrally connected to the outer cylinder, and the inner cylinder is threadedly connected to the inner side of the outer cylinder. The inner end face of the inner cylinder is rotatably engaged with the outer fixing plate, and an elastic tensioning device is installed between the outer fixing plate and the inner ring seat.

5. The fixing device for an optical film of a camera lens according to claim 4, characterized in that: A ball bearing is provided between the inner end face of the inner cylinder and the outer fixing plate. A guide rail is fixed on the inner side of the outer ring seat. A sliding groove is provided on the outer side of the inner cylinder. The guide rail and the sliding groove of the inner cylinder slide together vertically.

6. A fixing device for an optical film of a camera lens according to any one of claims 1-5, characterized in that: The inner side of the inner fixing plate is detachably connected to a clamp, and the inner side of the clamp is fitted with a rotating cylinder. The lower end of the rotating cylinder is integrally formed with a rotating disk, and the rotating disk rotates in conjunction with the electronic device body.

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