Fixing device for optical film of camera lens

Abstract

The invention discloses a fixing device for an optical film of a camera lens, which belongs to the technical field of optical films and comprises an outer fixing sheet, an outer limiting ring fixed on the inner side of the outer fixing sheet and an outer limiting assembly connected and matched with the outer fixing sheet in a sealing manner, the outer limiting ring is mounted at the edge of the center hole of the outer fixing sheet; the inner limiting ring is fixed to the outer side of the inner fixing piece, the inner limiting assembly is connected and matched with the inner fixing piece in a sealing mode, a center hole is formed in the middle of the inner fixing piece, and the inner limiting ring is installed at the edge of the center hole of the inner fixing piece; the outer limiting assembly and the inner limiting assembly are connected through a fastener, the outer limiting assembly and the inner limiting assembly are fixed to the inner side of the electronic equipment body at the same time, and the optical film is pressed between the outer limiting ring and the inner limiting ring. The device can help the optical film to better resist external force interference, and the risk of damage caused by external force is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of optical films, and in particular relates to a fixing device for an optical film of a camera lens. Background Art

[0002] As people pay more and more attention to personal privacy, the privacy protection of cameras in electronic products, as important storage and processing devices for personal information, has received increasing attention. Lens optical film can effectively prevent unauthorized shooting and peeping, meet the urgent needs of users in terms of privacy protection, and promote its application and development in the market. During the long-term use of optical film, it may be affected by external environmental factors such as temperature changes, wind pressure, vibration, etc. If the position of the optical film moves or becomes loose, inaccurate dimming areas and uneven dimming may occur. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a fixing device for an optical film of a camera lens, which can help the optical film better resist these external forces and reduce the risk of damage due to external forces.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention discloses a fixing device for an optical film of a camera lens, comprising an external fixing plate, an external limiting ring fixed on the inner side of the external fixing plate, and an external limiting assembly connected and sealed with the external fixing plate, wherein a center hole is formed in the middle of the external fixing plate, and the external limiting ring is installed at the edge of the center hole of the external fixing plate; the device also comprises an internal fixing plate, an internal limiting ring fixed on the outer side of the internal fixing plate, and an internal limiting assembly connected and sealed with the internal fixing plate, wherein a center hole is formed in the middle of the internal fixing plate, and the internal limiting ring is installed at the edge of the center hole of the internal fixing plate; the external limiting assembly and the internal limiting assembly are connected by fasteners, and the external limiting assembly and the internal limiting assembly are fixed to the inner side of the electronic device body at the same time, and the optical film is pressed between the external limiting ring and the internal limiting ring, and the external limiting ring and the internal limiting ring are made of elastic material.

[0006] Further, the outer limit assembly includes an outer limit seat and a first middle limit seat connected to the outer limit seat, the inner side of the outer limit seat is provided with an outer step groove, the outer step groove is provided with an outer ring groove, a sealing ring is installed in the outer ring groove, the first middle limit seat is provided with a first step groove on both inner and outer sides, the first step groove is provided with a first ring groove, a sealing ring is installed in the first ring groove, the outer step groove and the first step groove cooperate to form an outer limit groove for inserting an outer fixing plate, the outer ring groove and the sealing ring on the outer side of the first middle limit seat are respectively connected and sealed to the two sides of the outer fixing plate.

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

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

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

[0010] Furthermore, a ball bearing is arranged between the inner end surface of the inner cylinder and the outer fixing plate, a guide rail is fixed on the inner side of the outer ring seat, a slide groove is provided on the outer side of the inner cylinder, and the guide rail and the slide groove of the inner cylinder are matched along the vertical sliding direction.

[0011] Furthermore, the inner limit assembly includes an inner limit seat and a second middle limit seat connected to the inner limit seat, the outer side of the inner limit seat is provided with an inner step groove, the inner step groove is provided with an inner ring groove, a sealing ring is installed in the inner ring groove, the inner and outer sides of the second middle limit seat are provided with second step grooves, the second step groove is provided with a second ring groove, a sealing ring is installed in the second ring groove, the inner step groove and the second step groove cooperate to form an inner limit groove for inserting the inner fixing plate, the inner ring groove and the sealing ring on the inner side of the second middle limit seat are respectively connected and sealed to the two sides of the inner fixing plate; the first middle limit seat and the second middle limit seat are connected, and the sealing ring on the inner side of the first middle limit seat and the sealing ring on the outer side of the second middle limit seat are respectively connected and sealed to the two sides of the optical film.

[0012] Furthermore, a clamp is detachably connected to the inner side of the inner fixing plate, a rotating drum is cooperatively connected to the inner side of the clamp, a rotating disk is integrally mounted on the lower end of the rotating drum, and the rotating disk is rotatably matched with the electronic equipment body.

[0013] The beneficial effects of the present invention are:

[0014] Traditional optical films are fixed by glue, which is easy to fail after long-term use. When the optical film is affected by temperature changes, wind pressure, vibration, etc., the position of the optical film moves or becomes loose, which may cause inaccurate dimming areas and uneven dimming. The present invention discloses a fixing device for an optical film of a camera lens, in which the optical film is pressed between an outer limiting ring and an inner limiting ring, and the optical film is fixed by an elastic limiting ring. Even if the optical film becomes loose under external conditions, it can be quickly fixed by the elastic limiting effect, thereby avoiding the occurrence of technical problems.

[0015] In the device disclosed in the present invention, the outer fixing plate is rotationally engaged through the outer limiting assembly, and the inner fixing plate is rotationally engaged through the inner limiting assembly. When the optical film is slightly twisted, the rotation limiting action of the fixing plate and the limiting assembly can also solve the problem of connection failure caused by the fixed connection with the electronic device body.

[0016] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be achieved through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0018] Figure 1 It is a structural schematic diagram of the device of the present invention;

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

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

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

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

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

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

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

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

[0027] The outer limit assembly 3 and the inner limit assembly 6 are connected by fasteners, and the fasteners are bolts. It can be determined that when the outer limit assembly 3 and the inner limit assembly 6 are connected and matched, the outer limit ring 2 and the inner limit ring 5 can at least compress the optical film 7. The compression method also avoids damage to the conductive layer of the optical film 7. The outer limit assembly 3 and the inner limit assembly 6 are fixed to the inner side of the electronic device body at the same time, and the optical film 7 is compressed between the outer limit ring 2 and the inner limit ring 5. The outer limit ring 2 and the inner limit ring 5 are made of elastic material. Preferably, the silicone material is used. Since the optical film 7 is compressed between the outer limit ring 2 and the inner limit ring 5, the optical film 7 is fixed by the elastic limit ring. Even if the optical film 7 is loose under external conditions, it can be quickly fixed by the elastic limiting effect, thereby avoiding the occurrence of technical problems.

[0028] The present invention effectively improves the positioning of the axial position of the optical film 7 by setting the elastic pressure, and can also prevent the edge of the optical film 7 from being worn, protecting the key structures such as the conductive circuit and liquid crystal molecules inside the optical film 7 from being damaged.

[0029] In this embodiment, the outer limit assembly 3 includes an outer limit seat 8 and a first middle limit seat 9 connected to the outer limit seat 8. The outer limit seat 8 and the first middle limit seat 9 are both in a circular shape. An outer step groove 10 is provided on the inner side of the outer limit seat 8, i.e., the side facing the optical film 7. The outer step groove 10 is provided with an outer ring groove 11. There are two groups of outer ring grooves 11, and a sealing ring 12 is installed in each group of outer ring grooves 11. First step grooves 13 are provided on both inner and outer sides of the first middle limit seat 9. A first ring groove 14 is provided on the first step groove 13. A sealing ring 12 is installed in the first ring groove 14. The outer step groove 10 cooperates with the first step groove 13 to form an outer limit groove for inserting the outer fixing plate 1. The outer ring groove 11 and the sealing ring 12 on the outer side of the first middle limit seat 9 are respectively connected and sealed with the two sides of the outer fixing plate 1.

[0030] In the present invention, friction fit is adopted between the sealing ring 12 and the outer fixing plate 1. In some other embodiments, a fixed connection method can be adopted between the sealing ring 12 and the outer fixing plate 1, so that the sealing ring 12 can rotate in the outer ring groove 11 and the first ring groove 14, thereby realizing a rotational friction fit between the outer fixing plate 1 and the outer limit assembly 3.

[0031] In this embodiment, the outer limit seat 8 includes an outer ring seat 15, an inner ring seat 16 rotatably matched 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 the air inlet 18 and the air outlet 19, and a sealing film 20 is installed on the outer side of the pressure shell 17. By providing the annular pressure shell 17, a high-pressure sealing area can be partially formed on the inner side of the pressure shell 17 to achieve a sealing effect. At the same time, a sealing structure of a multi-layer sealing ring 12 is designed to increase the sealing effect, avoid interference from impurities, and avoid damage to the optical film 7.

[0032] In this embodiment, an additional ring 21 is detachably mounted on the outer end of the pressure shell 17, and a protective glass 22 is mounted on the additional ring 21. The protective glass 22 is located on the outer side of the sealing film 20. By providing the protective glass 22, the sealing film 20 and the internal structure can be protected, thereby increasing the life of the device. The sealing film 20 can expand under the action of pressure, which also reduces the force applied to the optical film 7, thereby reducing damage to the optical film 7 while ensuring high-pressure sealing.

[0033] In this embodiment, the inner side of the inner ring seat 16 is integrally connected with the outer cylinder 23, the inner side of the outer cylinder 23 is threadedly connected with the inner cylinder 24, the inner end surface of the inner cylinder 24 is rotationally matched with the outer fixing plate 1, and an elastic stretching 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 threadedly engaged with it can be driven to move along the axial direction to compress the outer fixing plate 1, thereby fine-tuning the pressure to meet actual needs. The elastic stretching device 25 provides elastic tension for the outer fixing plate 1, and after the inner cylinder 24 is loosened, the pressing force on the optical film 7 can be released in time.

[0034] In this embodiment, a ball 26 is arranged between the inner end surface of the inner cylinder 24 and the outer fixing plate 1, which can reduce the effect of friction resistance and make the rotational cooperation more smooth. A guide rail 27 is fixed on the inner side of the outer ring seat 15, and a slide groove 28 is provided on the outer side of the inner cylinder 24. The guide rail 27 and the slide groove 28 of the inner cylinder 24 slide in cooperation with each other in the vertical direction.

[0035] In this embodiment, similar to the structure of the outer limit assembly 3, the inner limit assembly 6 disclosed in the present invention includes an inner limit seat 29, a second middle limit seat 30 connected to the inner limit seat 29, an inner step groove 31 is provided on the outer side of the inner limit seat 29, an inner ring groove 32 is provided on the inner step groove 31, a sealing ring 12 is installed in the inner ring groove 32, a second step groove 33 is provided on both the inner and outer sides of the second middle limit seat 30, a second ring groove 34 is provided on the second step groove 33, and a second ring groove 35 is provided on the second ring groove 36. A sealing ring 12 is installed in the groove 34, and the inner step groove 31 and the second step groove 33 cooperate to form an inner limit groove for inserting the inner fixing plate 4, and the inner ring groove 32 and the sealing ring 12 on the inner side of the second middle limit seat 30 are respectively connected and sealed with the two sides of the inner fixing plate 4; the first middle limit seat 9 and the second middle limit seat 30 are connected, and the sealing ring 12 on the inner side of the first middle limit seat 9 and the sealing ring 12 on the outer side of the second middle limit seat 30 are respectively connected and sealed with the two 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 cooperatively connected to the inner side of the clamp 35. A rotating disk 37 is integrally installed on the lower end of the rotating cylinder 36. The rotating disk 37 rotates with the electronic device body to 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 rather than 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 in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A fixing device for an optical film of a camera lens, characterized in that: It includes an outer fixing plate, an outer limiting ring fixed on the inner side of the outer fixing plate, and an outer limiting assembly connected and sealed with the outer fixing plate, a center hole is formed in the middle of the outer fixing plate, and the outer limiting ring is installed at the edge of the center hole of the outer fixing plate; it also includes an inner fixing plate, an inner limiting ring fixed on the outer side of the inner fixing plate, and an inner limiting assembly connected and sealed with the inner fixing plate, a center hole is formed in the middle of the inner fixing plate, and the inner limiting ring is installed at the edge of the center hole of the inner fixing plate; the outer limiting assembly and the inner limiting assembly are connected by fasteners, and the outer limiting assembly and the inner limiting assembly are fixed to the inner side of the electronic device body at the same time, the optical film is pressed 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.

2. The fixing device for an optical film of a camera lens according to claim 1, characterized in that: The outer limit assembly includes an outer limit seat and a first middle limit seat connected to the outer limit seat, an outer step groove is provided on the inner side of the outer limit seat, an outer ring groove is provided on the outer step groove, a sealing ring is installed in the outer ring groove, first step grooves are provided on both inner and outer sides of the first middle limit seat, a first ring groove is provided on the first step groove, a sealing ring is installed in the first ring groove, the outer step groove and the first step groove cooperate to form an outer limit groove for inserting an outer fixing plate, and the outer ring groove and the sealing ring on the outer side of the first middle limit seat are respectively connected and sealed to both sides of the outer fixing plate.

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

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

5. The fixing device for an optical film of a camera lens according to claim 4, characterized in that: The inner side of the inner ring seat is integrally connected with an outer cylinder, the inner side of the outer cylinder is threadedly connected with the inner cylinder, the inner end surface of the inner cylinder is rotationally matched with the outer fixing plate, and an elastic stretching device is installed between the outer fixing plate and the inner ring seat.

6. The fixing device for an optical film of a camera lens according to claim 5, characterized in that: A ball bearing is arranged between the inner end surface of the inner cylinder and the outer fixing plate, a guide rail is fixed on the inner side of the outer ring seat, a slide groove is provided on the outer side of the inner cylinder, and the guide rail and the slide groove of the inner cylinder are matched along the vertical sliding direction.

7. A fixing device for an optical film of a camera lens according to any one of claims 2 to 6, characterized in that: The inner limit assembly includes an inner limit seat and a second middle limit seat connected to the inner limit seat, an inner step groove is provided on the outer side of the inner limit seat, an inner ring groove is provided on the inner step groove, a sealing ring is installed in the inner ring groove, second step grooves are provided on both inner and outer sides of the second middle limit seat, a second ring groove is provided on the second step groove, a sealing ring is installed in the second ring groove, the inner step groove and the second step groove cooperate to form an inner limit groove for inserting the inner fixing plate, the inner ring groove and the sealing ring on the inner side of the second middle limit seat are respectively connected and sealed to the two sides of the inner fixing plate; the first middle limit seat and the second middle limit seat are connected, and the sealing ring on the inner side of the first middle limit seat and the sealing ring on the outer side of the second middle limit seat are respectively connected and sealed to the two sides of the optical film.

8. The fixing device for an optical film of a camera lens according to claim 7, characterized in that: A clamp is detachably connected to the inner side of the inner fixing plate, a rotating drum is cooperatively connected to the inner side of the clamp, a rotating disk is integrally mounted on the lower end of the rotating drum, and the rotating disk is rotatably matched with the electronic equipment body.

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