A camera lens cover

Abstract

This application relates to the field of camera technology, and in particular to a camera lens cap, comprising: a main body, one side of which has an annular protrusion for conforming to the outer periphery of the lens end face, the annular protrusion having a circular recessed groove inside; a moisture-proof block, detachably connected to the circular recessed groove; an annular sealing ring, one side of which is embedded in the annular protrusion and the other side of which protrudes from the surface of the annular protrusion; and a magnetic block, embedded in the annular protrusion and used to attract the lens. The purpose of this invention is to overcome the shortcomings of existing lens caps that lack moisture-proof function. This invention integrates the moisture-proof function into the lens cap, combining the advantages of high frequency of use and ease of use of lens caps. It protects the camera lens while simultaneously providing moisture absorption and protection, with a simple structure and convenient use.

Description

Technical Field

[0001] This application relates to the field of camera technology, and in particular to a camera lens cap. Background Technology

[0002] The camera lens is the core optical component of a camera. The most important principles for storing and maintaining a camera lens are "moisture protection, dust protection, avoiding extreme temperatures, and protection from impacts." Among these, the humidity level needs to be maintained at 45%-55% for optimal performance. Excessive humidity can cause mold growth on the lens and rust on electronic components, while insufficient humidity may cause rubber parts (such as sealing rings) to crack. Therefore, the damage to the lens caused by a humid environment is multi-dimensional and irreversible, and can severely damage everything from optical performance to mechanical and electronic systems.

[0003] Currently, the common method of moisture protection is to store camera lenses in a moisture-proof and airtight box when not in use, such as an electronic desiccant box. However, using a desiccant box requires specialized moisture-proof equipment for lens storage, which is costly and inconvenient to carry. Lens caps, as the most commonly used protective part for cameras, can prevent scratches on the lens glass, dust, water droplets, or minor bumps. However, existing lens caps do not have integrated moisture-proof functions and cannot maintain the relative humidity of the lens during camera transport. Therefore, how to integrate moisture-proof functions into lens caps and ensure their effectiveness has become a major challenge in the market. Utility Model Content

[0004] Therefore, the purpose of this utility model is to overcome the shortcomings of existing lens caps that lack moisture-proof function and to provide a camera lens cap. This utility model integrates the moisture-proof function into the lens cap, combining the advantages of high frequency of use and ease of use. While protecting the camera lens, the lens cap also provides moisture absorption and protection, with a simple structure and convenient use.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A camera lens cap, comprising: The main body has an annular protrusion on one side for fitting the outer periphery of the end face of the lens, and a circular clearance groove is formed inside the annular protrusion. A moisture-proof block is detachably connected to the circular recessed groove; An annular sealing ring, with one side surface embedded in the annular boss and the other side surface protruding from the surface of the annular boss; A magnetic block is embedded in the annular protrusion and is used to attract the lens.

[0006] This application forms a circular recessed groove by setting an annular boss in the main body. On one hand, the circular recessed groove provides space for the moisture-proof block; on the other hand, the raised annular surface of the annular boss allows for adhesion to the outer periphery of the camera lens. To ensure that the internal space of the circular recessed groove remains relatively sealed after the lens cap is attached to the camera lens, this application specifically designs an annular sealing ring with one side embedded in the annular boss and the other side protruding from the surface of the annular boss. The annular sealing ring protruding from the surface of the annular boss maintains a sealing effect at the connection point during adsorption and compression, thereby allowing the moisture-proof block to better absorb moisture in the sealed internal space. To maintain relative humidity, the attached location has no seams, preventing it from connecting to the external space and affecting the moisture absorption effect. The lens cap of this application uses a magnetic adsorption method to connect with the camera lens. The magnetic force of the magnetic block enables quick connection and disconnection with the camera lens. At the same time, the magnetic block is embedded inside the annular protrusion, which can provide sufficient compressive force to the annular sealing ring after adsorbing the camera lens. Under the compressive force, the annular sealing ring further ensures a better sealing effect for the lens cap and the camera lens. Secondly, the moisture-proof block of this application has a detachable structure, and its moisture-proof function can be renewed by replacing the moisture-proof block after it has absorbed moisture to saturation.

[0007] This application integrates the moisture-proof function into the lens cap, combining the advantages of high frequency of use and ease of use. While protecting the camera lens, the lens cap also provides moisture-proof protection. The structure is simple and easy to use. The annular boss provides space for the moisture-proof block by forming a circular recess, and its raised annular surface allows it to adhere to the outer circumference of the camera lens. One side of the annular sealing ring protrudes from the surface of the annular boss, ensuring a seal at the connection point during adsorption and compression, maintaining the airtightness inside the recess, and ensuring that the moisture-proof block efficiently absorbs moisture without being affected by external space. The magnetic connection combines convenience and sealing. The magnetic block embedded in the annular boss provides sufficient compression force to the annular sealing ring after adsorption, further improving the sealing effect.

[0008] Furthermore, an annular groove is provided on the annular boss, the magnetic block is located in the annular groove, one side surface of the annular sealing ring is embedded in the annular groove and covers the magnetic block, and the other side surface of the annular sealing ring protrudes from the surface of the annular boss.

[0009] This application aligns a magnetic block and an annular sealing ring within an annular groove. This facilitates the installation of the magnetic block and limits their positioning within the annular groove, ensuring precise alignment in the axial direction. When the camera lens is being attracted, the magnetic force of the magnetic block acts positively on the annular sealing ring, generating greater compressive force and improving the sealing effect.

[0010] Furthermore, the annular sealing ring is a silicone strip. The silicone strip has excellent deformability, allowing it to conform well to the contact surface during compression, achieving a better sealing effect.

[0011] Furthermore, the other side surface of the annular sealing ring protrudes 0.5mm to 0.6mm beyond the surface of the annular boss. The distance by which the other side surface of the annular sealing ring protrudes beyond the surface of the annular boss cannot be too large; otherwise, it will affect the magnetic attraction effect. If the protrusion distance is too small, the deformation space of the annular sealing ring will be too small, resulting in poor adhesion to the contact surface. After continuous testing, a protrusion height of 0.5mm to 0.6mm can effectively balance the deformation and adhesion effect of the annular sealing ring under the adsorption pressure with the magnetic attraction force of the magnetic block.

[0012] Furthermore, the moisture-proof block includes a dustproof cloth and a moisture-absorbing sheet arranged sequentially from the inside to the outside in the circular recessed groove, with the dustproof cloth facing the camera lens side.

[0013] Furthermore, the dustproof cloth is a breathable fleece cloth for use facing the camera lens.

[0014] It should be noted that the dustproof cloth and the moisture-absorbing sheet can be fixed to each other by adhesive to form a replaceable whole module. The dustproof cloth and the moisture-absorbing sheet can also be designed as a detachable and connectable separate structure, which can be formed into a whole by interlocking or by the dustproof cloth covering the moisture-absorbing sheet. The whole module can be replaced separately or the moisture-absorbing sheet can be replaced separately.

[0015] It should also be noted that the detachable connection between the moisture-proof block and the circular cavity can be achieved in the following ways: the moisture-proof block is designed as a circular block that is interference-fitted with the circular cavity, and the moisture-proof block is fixed by interference snap-fit. In this way, when replacing, it is only necessary to remove and insert a new moisture-proof block; a snap-fit ​​groove or a protruding limiting block can be provided in the circular cavity to limit and snap the moisture-proof block; the moisture-proof block can also be glued to the bottom of the circular cavity using adhesive or other methods. The specific detachable method used does not affect the achievement of the purpose of this application.

[0016] Furthermore, the moisture-absorbing sheet is one of silica gel moisture-absorbing sheet, fiber moisture-absorbing sheet, and montmorillonite moisture-absorbing sheet.

[0017] Furthermore, a one-way breathable membrane is provided between the dustproof cloth and the moisture-absorbing sheet to separate the two and allow water vapor to enter the moisture-absorbing sheet in only one direction.

[0018] It should be noted that one-way breathable membranes are commercially available one-way breathable membranes. Their core characteristic is that they allow water vapor to permeate from one side to the other, but completely block it in the opposite direction. They are made of materials such as expanded polytetrafluoroethylene (ePTFE) or polyethylene (PE). This one-way breathable function ensures that the moisture-absorbing sheet can absorb water vapor from the sealed space, but it cannot reverse the absorption of moisture or the water droplets formed to the sealed space, thus further ensuring its moisture absorption effect and preventing moisture from returning.

[0019] Furthermore, the one-way breathable membrane covers the outside of the moisture-absorbing sheet. Specifically, this can be achieved by covering the moisture-absorbing sheet with a one-way breathable membrane, and then fixing the moisture-absorbing sheet and the dustproof cloth together to form an integrated moisture-proof block.

[0020] Furthermore, the magnetic block includes several arc-shaped magnetic blocks, which are evenly distributed circumferentially in the annular groove. The arc-shaped magnetic blocks can be assembled into a complete circular shape, or they can be a circular shape with discontinuities, reducing the assembly difficulty of the arc-shaped magnetic blocks and the annular groove.

[0021] Furthermore, the other side surface of the main body is also provided with a handle protruding from the surface of the main body, and the outer periphery of the other side surface of the main body is also provided with annular anti-slip texture, with the handle located in the center of the annular anti-slip texture. The handle and annular anti-slip texture not only improve aesthetics but also provide leverage when removing the object, making it easier to remove and grasp.

[0022] Compared with the prior art, the beneficial effects of this utility model are: (1) The lens cap of this application is connected to the camera lens by magnetic adsorption. The magnetic adsorption force of the magnetic block enables quick connection and disassembly with the camera lens. At the same time, the magnetic block is embedded in the annular protrusion, which can provide sufficient extrusion force to the annular sealing ring after adsorbing the camera lens. Under the extrusion force, the annular sealing ring can further ensure a better sealing effect on the lens cap and the camera lens. Secondly, the moisture-proof block of this application is a detachable structure. After the moisture-proof block reaches saturation, its moisture-proof function can be updated by replacing the moisture-proof block.

[0023] (2) This application integrates the moisture-proof function into the lens cap, combining the high frequency of use and ease of use of the lens cap. While protecting the camera lens, the lens cap also provides moisture-proof protection for the camera lens. The structure is simple and easy to use. The annular boss provides a space for the moisture-proof block by forming a circular cavity, and its raised annular surface allows it to adhere to the outer periphery of the camera lens. One side of the annular sealing ring protrudes from the surface of the annular boss. When adsorbed and squeezed, it can ensure the seal at the connection and maintain the airtightness inside the cavity, ensuring that the moisture-proof block absorbs moisture efficiently and is not affected by the external space. The magnetic connection combines convenience and sealing. After the magnetic block embedded in the annular boss is adsorbed, it can provide sufficient squeezing force to the annular sealing ring, further improving the sealing effect. Attached Figure Description

[0024] Figure 1 A cross-sectional view of a camera lens cap in one embodiment; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 An exploded view of a camera lens cap in one embodiment; Figure 4 A top perspective view of the camera lens cap in one embodiment; Figure 5 This is a schematic diagram of the moisture-proof block in another embodiment.

[0025] 1-Main body, 11-Annular boss, 12-Circular clearance groove, 13-Annular groove, 14-Annular anti-slip texture, 2-Moisture-proof block, 21-Dustproof cloth, 22-Moisture-absorbing sheet, 23-One-way breathable membrane, 3-Annular sealing ring, 4-Magnetic block, 5-Handle. Detailed Implementation

[0026] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this application. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0028] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] Example 1 like Figure 1 and Figure 2 As shown, this embodiment provides a camera lens cap, including: The main body 1 has an annular protrusion 11 on one side for fitting the outer periphery of the end face of the lens, and a circular clearance groove 12 is formed inside the annular protrusion 11. Moisture-proof block 2 is detachably connected to the circular air-proof groove 12; The annular sealing ring 3 has one side surface embedded in the annular boss 11 and the other side surface protruding from the surface of the annular boss 11. The magnetic block 4 is embedded in the annular protrusion 11 and is used to attract the lens.

[0030] The principle of this application is as follows: a circular recess 12 is formed by setting an annular boss 11 in the main body 1. On the one hand, the circular recess 12 provides a space for the moisture-proof block 2 to be placed. On the other hand, the raised annular surface of the annular boss 11 allows it to adhere to the outer periphery of the camera lens. At the same time, in order to ensure that the internal space of the circular recess 12 remains relatively sealed after the lens cap is adsorbed with the camera lens, this application specially designs an annular sealing ring 3 with one side embedded in the annular boss 11 and the other side protruding from the surface of the annular boss 11. The annular sealing ring 3 protruding from the surface of the annular boss 11 can maintain the sealing effect at the connection point during adsorption and compression, thereby allowing the moisture-proof block 2 to remain in the sealed internal space. To better absorb moisture and maintain relative humidity, the attachment location has no seams, preventing external space from affecting the moisture absorption effect. The lens cap of this application uses a magnetic adsorption method to connect with the camera lens. The magnetic block 4 enables quick connection and disconnection with the camera lens. At the same time, the magnetic block 4 is embedded inside the annular protrusion 11, which can provide sufficient compressive force to the annular sealing ring 3 after adsorbing the camera lens. Under the compressive force, the annular sealing ring 3 further ensures a better sealing effect between the lens cap and the camera lens. Secondly, the moisture-proof block 2 of this application has a detachable structure, and its moisture-proof function can be updated by replacing the moisture-proof block 2 after it has absorbed moisture to saturation.

[0031] like Figure 2 As shown, an annular groove 13 is also provided on the annular boss 11. The magnetic block 4 is located in the annular groove 13. One side surface of the annular sealing ring 3 is embedded in the annular groove 13 and covers the magnetic block 4. The other side surface of the annular sealing ring 3 protrudes from the surface of the annular boss 11.

[0032] like Figure 3 As shown, the magnetic block 4 includes several arc-shaped magnetic blocks, which are evenly distributed circumferentially in the annular groove 13. The several arc-shaped magnetic blocks can be spliced ​​together to form a discontinuous circular shape, reducing the assembly difficulty of the arc-shaped magnetic blocks and the annular groove 13.

[0033] like Figure 2 As shown, this application aligns the magnetic block 4 and the annular sealing ring 3 within the annular groove 13. This facilitates the installation of the magnetic block 4 and limits their positioning within the annular groove 13, ensuring precise alignment in the axial direction. When adsorbing a camera lens, the magnetic force of the magnetic block 4 acts positively on the annular sealing ring 3, generating greater compressive force and improving the sealing effect.

[0034] In this embodiment, the annular sealing ring 3 is a silicone strip. The silicone strip has excellent deformability, allowing it to conform well to the contact surface during compression, achieving a better sealing effect.

[0035] In this embodiment, the other side surface of the annular sealing ring 3 protrudes 0.5mm to 0.6mm from the surface of the annular boss 11. The distance between the other side surface of the annular sealing ring 3 and the surface of the annular boss 11 cannot be too large, otherwise it will affect the magnetic attraction effect. If the protrusion distance is too small, the deformation space of the annular sealing ring 3 will be too small, which will result in it not being able to adhere well to the contact surface. After continuous testing, a protrusion height of 0.5mm to 0.6mm can well balance the deformation and adhesion effect of the annular sealing ring 3 under the adsorption pressure and the magnetic attraction force of the magnetic block 4.

[0036] The advantages of this application are as follows: This application integrates the moisture-proof function into the lens cap, combining the high frequency of use and ease of use of the lens cap. While protecting the camera lens, the lens cap also provides moisture-proof protection for the camera lens. The structure is simple and easy to use. The annular boss 11 provides a space for the moisture-proof block 2 by forming a circular cavity 12, and its raised annular surface allows it to adhere to the outer periphery of the camera lens. One side of the annular sealing ring 3 protrudes from the surface of the annular boss 11. When adsorbed and squeezed, it can ensure the seal at the connection and maintain the airtightness inside the cavity, ensuring that the moisture-proof block 2 absorbs moisture efficiently and is not affected by the external space. The magnetic connection combines convenience and sealing. After the magnetic block 4 embedded in the annular boss 11 is adsorbed, it can provide sufficient squeezing force to the annular sealing ring 3, further improving the sealing effect.

[0037] Example 2 This embodiment is similar to Embodiment 1, except that in this embodiment: like Figure 2 and Figure 3 As shown, the moisture-proof block 2 includes a dustproof cloth 21 and a moisture-absorbing sheet 22 arranged sequentially from the inside to the outside in the circular air-proof groove 12, with the dustproof cloth 21 facing the side of the camera lens.

[0038] In this embodiment, the dustproof cloth 21 is a breathable fleece cloth for facing the camera lens.

[0039] In this embodiment, the dustproof cloth 21 and the moisture-absorbing sheet 22 can be fixed to each other by adhesive to form a replaceable integral module.

[0040] In this embodiment, the detachable connection between the moisture-proof block 2 and the circular cavity 12 can be as follows: the moisture-proof block 2 is designed as a circular block shape that is interference-fitted with the circular cavity 12, and the moisture-proof block 2 is fixed by interference snap-fit. In this way, when replacing, it is only necessary to take it out and insert a new moisture-proof block 2.

[0041] In this embodiment, the moisture-absorbing sheet 22 is one of the following: silicone moisture-absorbing sheet 22, fiber moisture-absorbing sheet 22, and montmorillonite moisture-absorbing sheet 22.

[0042] The other structures and principles of this embodiment are the same as those of Embodiment 1.

[0043] Example 3 This embodiment is similar to Embodiment 1, except that in this embodiment: like Figure 5 As shown, a one-way breathable membrane 23 is provided between the dustproof cloth 21 and the moisture-absorbing sheet 22 to separate the two and allow water vapor to enter the moisture-absorbing sheet 22 in only one direction.

[0044] It should be noted that the one-way breathable membrane 23 is a commercially available one-way breathable membrane 23. Specifically, in this embodiment, a commercially available ePTFE membrane from the brand GORE-TEX is used. This membrane has 1.4 billion micropores per square centimeter, which can completely block rainwater with a diameter greater than 20 micrometers, while allowing vapor molecules to escape. This one-way breathability ensures that the moisture-absorbing sheet 22 absorbs water vapor from the sealed space, but it cannot reverse the flow of absorbed moisture or water droplets back into the sealed space, further ensuring its moisture absorption effect and preventing moisture from returning.

[0045] like Figure 5 As shown, a one-way breathable membrane 23 covers the outside of the moisture-absorbing sheet 22. Specifically, this can be achieved by covering the moisture-absorbing sheet 22 with a one-way breathable membrane 23, and then fixing the moisture-absorbing sheet 22 and the dustproof cloth 21 together to form an integral moisture-proof block 2.

[0046] The other structures and principles of this embodiment are the same as those of Embodiment 1.

[0047] Example 4 This embodiment is similar to Embodiment 1, except that in this embodiment: like Figure 3 and Figure 4 As shown, a handle 5 protruding from the surface of the main body 1 is also provided on the other side surface of the main body 1, and an annular anti-slip texture 14 is also provided on the outer periphery of the other side surface of the main body 1, with the handle 5 located in the middle of the annular anti-slip texture 14. The handle 5 and the annular anti-slip texture 14 not only improve the aesthetics but also provide leverage when removing the object, making it easier to remove and grasp.

[0048] The other structures and principles of this embodiment are the same as those of Embodiment 1.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A camera lens cover characterized by, include: The main body (1) has an annular protrusion (11) on one side for fitting the outer periphery of the end face of the lens, and a circular clearance groove (12) is formed inside the annular protrusion (11). Moisture-proof block (2) is detachably connected to the circular air-proof groove (12); The annular sealing ring (3) has one side surface embedded in the annular boss (11) and the other side surface protruding from the surface of the annular boss (11); The magnetic block (4) is embedded in the annular boss (11) and is used to attract the lens.

2. A camera lens cap according to claim 1, wherein, The annular boss (11) is also provided with an annular groove (13), the magnetic block (4) is located in the annular groove (13), one side surface of the annular sealing ring (3) is embedded in the annular groove (13) and covers the magnetic block (4), and the other side surface of the annular sealing ring (3) protrudes from the surface of the annular boss (11).

3. A camera lens cap according to claim 2, wherein, The annular sealing ring (3) is a silicone strip, and the other side surface of the annular sealing ring (3) protrudes 0.5mm~0.6mm from the surface of the annular boss (11).

4. The camera lens cap of claim 1, wherein, The moisture-proof block (2) includes a dustproof cloth (21) and a moisture-absorbing sheet (22) arranged sequentially from the inside to the outside in the circular vent groove (12), with the dustproof cloth (21) facing the side of the camera lens.

5. A camera lens cap according to claim 4, wherein, The dustproof cloth (21) is a breathable fleece cloth for use facing the camera lens.

6. A camera lens cap according to claim 4, wherein, The moisture-absorbing sheet (22) is one of silica gel moisture-absorbing sheet (22), fiber moisture-absorbing sheet (22) and montmorillonite moisture-absorbing sheet (22).

7. The camera lens cover of claim 4, wherein, A one-way breathable membrane (23) is provided between the dustproof cloth (21) and the moisture-absorbing sheet (22) to separate the two and allow water vapor to enter the moisture-absorbing sheet (22) in only one direction.

8. A camera lens cap according to claim 7, wherein, The one-way breathable membrane (23) covers the outside of the moisture-absorbing sheet (22).

9. The camera lens cap of claim 2, wherein, The magnetic block (4) includes several arc-shaped magnetic blocks, which are evenly distributed circumferentially in the annular groove (13).

10. The camera lens cover of claim 1, wherein, The other side surface of the main body (1) is also provided with a handle (5) protruding from the surface of the main body (1), and the outer periphery of the other side surface of the main body (1) is also provided with annular anti-slip texture (14), and the handle (5) is located in the middle of the annular anti-slip texture (14).

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