A filter frame assembly

Abstract

The application relates to the technical field of photographic accessories, in particular to a filter lens frame assembly which comprises a first lens frame and a second lens frame, the first lens frame is provided with a first lens mounting space for mounting an external lens, the second lens frame is provided with a second lens mounting space for mounting an external lens, the first lens frame is provided with a first clamping structure, the second lens frame is provided with a second clamping structure, the first lens frame and the second lens frame can be connected through the first clamping structure and the second clamping structure, reliable connection of two filters can be realized, and the dismounting operation between the two filters is very convenient.

Description

Technical Field

[0001] This application relates to the field of photographic accessory technology, specifically to a filter frame assembly. Background Technology

[0002] A filter is an additional lens that is installed in front of a camera lens to filter natural light. It includes a frame and a lens mounted on the frame. Filters have functions such as optical correction, protection, color adjustment, creative expression, light control, exposure control, and special shooting effects to meet various needs of photography.

[0003] Depending on their needs, photographers often require multiple filters to work together, and different filters need to be changed for different shooting occasions. Traditional filters use threads on the frame to connect different filters, but these threads make it inconvenient to install and remove the filters. Some filters also use magnetic structures to connect different filters. While traditional magnetic connections are easy to install and remove, they have technical issues with unreliable connections. Utility Model Content

[0004] This application provides a filter holder assembly that makes it easy to install and remove filters and enables reliable connection between filters.

[0005] This application provides a filter frame assembly, including:

[0006] The first eyeglass frame has a first lens mounting space, which is used to mount an external lens.

[0007] The first snap-fit ​​structure includes a hook and an operating part connected together. The hook is movably mounted on the first eyeglass frame and has a locking position and an unlocking position during the movement of the first eyeglass frame.

[0008] The second frame has a second lens mounting space for mounting an external lens.

[0009] A second snap-fit ​​structure is provided on the second frame;

[0010] In the locked position, the hook is hooked to the second snap-fit ​​structure, and the operating part can be driven by force to move the hook. In the unlocked position, the hook can disengage from the second snap-fit ​​structure to release the connection between the first frame and the second frame.

[0011] In one technical solution, the first eyeglass frame includes a first annular portion and a second annular portion. In the direction from the outer periphery to the center of the first eyeglass frame, the second annular portion is connected to the inner side of the first annular portion, and the second annular portion at least partially protrudes beyond the first annular portion along the thickness direction of the first eyeglass frame. The second eyeglass frame includes a third annular portion and a fourth annular portion. In the direction from the outer periphery to the center of the second eyeglass frame, the fourth annular portion is connected to the inner side of the third annular portion, and the fourth annular portion at least partially protrudes beyond the third annular portion along the thickness direction of the second eyeglass frame.

[0012] The third ring portion forms an installation space, the size of which is adapted to the size of the second ring portion, so that the second ring portion can be inserted into the installation space to achieve positioning of the first frame and the second frame in the direction from the outer periphery to the center of the first frame. The hook portion is provided on the second ring portion, and the second snap-fit ​​structure is a ring groove provided on the inner side of the third ring portion.

[0013] In one technical solution, a third snap-fit ​​structure is provided on the inner side of the first ring portion; the filter frame assembly further includes a fourth snap-fit ​​structure, the fourth snap-fit ​​structure including a hook and a body connected to each other, the hook being movably installed on the fourth ring portion, the hook being able to hook and connect with the third snap-fit ​​structure, so that the first frame and the second frame are connected; the body being able to be driven by force to move the hook, so that the hook can disengage from the third snap-fit ​​structure, thereby releasing the connection between the first frame and the second frame.

[0014] In one technical solution, the first snap-fit ​​structure is an integral structure, the first frame is provided with a hook mounting groove, the opening of the hook mounting groove is located on the outer side of the first frame, the hook mounting groove includes a first groove and a second groove, the first groove is disposed in the first ring body part, the second groove is disposed in the second ring body part, the operating part protrudes from the first groove, and the hook can extend and retract into the second groove to realize the switching of the hook position between the locked position and the unlocked position.

[0015] In one technical solution, a connecting part is provided between the operating part and the hook part. The connecting part includes a first part located in the first groove and a second part located in the second groove. A guide structure is provided between the second part and the second groove.

[0016] In one technical solution, the guiding structure includes a guide post and a guide hole that mates with the guide post. One of the guide post and the guide hole is located in the second part, and the other is located in the groove wall of the second groove.

[0017] In one technical solution, the first part is provided with a mounting hole, which penetrates the first part along the thickness direction of the first frame. A limiting structure is provided between the first part and the first frame. The limiting structure is installed in the mounting hole and fixed on the first frame to prevent the first snap-fit ​​structure from coming out of the snap-fit ​​mounting groove.

[0018] In one technical solution, the mounting hole is a countersunk hole, which is an elongated hole extending along the direction from the outer periphery to the center of the first frame. The limiting structure includes a screw, the head of which can be recessed into the countersunk hole, and the first locking structure can move relative to the screw.

[0019] In one technical solution, the filter frame assembly further includes an elastic reset member disposed between the first snap-fit ​​structure and the first frame, the elastic reset member being used to drive the hook portion to reset to the locking position.

[0020] In one technical solution, the filter frame assembly further includes an elastic washer disposed within the second frame, and the hook engages with the elastic washer at the locking position.

[0021] The beneficial effects of this application are as follows:

[0022] In the filter frame assembly described above, when connecting two filters using the first and second frames, the operator moves the hook on the first frame to the unlocked position, allowing the two filters to be stacked and installed. After installation, the hook moves from the unlocked position to the locked position and engages with the second snap-fit ​​structure. This connection is more reliable. When the two filters need to be separated, simply move the hook from the locked position to the unlocked position to release the connection between the two filters. Compared to screw-on installation, the filter frame assembly in the above solution is much easier to assemble and disassemble. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the filter frame assembly in some embodiments of this application;

[0024] Figure 2 This is a schematic diagram of the structure of the first frame of the filter frame assembly and the first external lens in some embodiments of this application;

[0025] Figure 3 for Figure 2 An exploded view of the assembly consisting of the first frame and the first external lens;

[0026] Figure 4 This is a cross-sectional view of the first frame and the first external lens in some embodiments of this application;

[0027] Figure 5 for Figure 4 A magnified view of part A;

[0028] Figure 6 This is a cross-sectional view of the filter frame assembly in some embodiments of this application with the first and second external lenses installed;

[0029] Figure 7 for Figure 6 A magnified view of section B;

[0030] Figure 8 This is a partial structural cross-sectional view of the second connecting ring of the filter frame assembly in some embodiments of this application;

[0031] Figure 9 This is a cross-sectional view of the filter frame assembly with the first and second external lenses mounted through the first snap-fit ​​structure in some embodiments of this application.

[0032] Figure 10 for Figure 9 A magnified view of a portion at point C;

[0033] Figure 11 A cross-sectional view of the filter frame assembly with the first and second external lenses mounted on the elastic reset member in some embodiments of this application;

[0034] Figure 12 This is a partial cross-sectional view of the first elastic gasket of the filter frame assembly in some embodiments of this application;

[0035] Figure 13 This is a schematic diagram of the first snap-fit ​​structure of the filter frame assembly in some embodiments of this application;

[0036] Figure 14 This is a partial structural diagram of the first frame of the filter frame assembly in some embodiments of this application;

[0037] Figure 15 This is a schematic diagram of the connector structure of the filter frame assembly in some embodiments of this application;

[0038] Figure 16 This is a structural schematic diagram of the connector of the filter frame assembly in some embodiments of this application from another perspective.

[0039] List of feature names corresponding to the labels in the figure:

[0040] 100. Filter frame assembly;

[0041] 101. First frame; 1011. First lens mounting space; 1012. First magnet; 1013. First connecting ring; 10131. First ring body portion; 10132. Second ring body portion; 10133. First mounting space; 10134. Support surface; 10135. First magnet mounting groove; 10136. First threaded ring; 1014. Second connecting ring; 10141. Second threaded ring; 10142. First positioning part; 10143. Second positioning part; 1015. First ring groove; 1016. Hook mounting groove; 10161. First groove portion; 10162. Second groove portion; 1017. Connecting hole;

[0042] 102. Second frame; 1021. Second lens mounting space; 1022. Second magnet; 1023. Third connecting ring; 10231. Third ring body portion; 10232. Fourth ring body portion; 10233. Second mounting space; 1024. Fourth connecting ring; 10241. Fourth threaded ring; 10242. Third positioning part; 10243. Fourth positioning part; 1025. Second ring groove;

[0043] 103. First snap-fit ​​structure; 1031. Operating part; 1032. Hook part; 1033. Connecting part; 10331. First part; 10332. Second part; 1034. Mounting hole;

[0044] 104. First elastic reset component;

[0045] 105. Second snap-fit ​​structure;

[0046] 106. Second elastic washer;

[0047] 107. Third snap-fit ​​structure;

[0048] 108. First elastic washer; 1081. Main ring body; 1082. Inner convex part;

[0049] 109. Screws;

[0050] 1010, Guide column;

[0051] 1020, Guide hole;

[0052] 1030, Connector; 10301, Threaded connection structure; 10302, Magnetic suction structure; 10303, Groove structure; 1040, First lens cover; 1050, Second lens cover;

[0053] 1060. Fourth snap-fit ​​structure; 1061. Hook; 1062. Body;

[0054] 1070. Second elastic reset component;

[0055] 201. First external lens; 202. Second external lens.

[0056] Explanation of reference numerals in parentheses in the accompanying drawings: The feature referred to by the reference numerals in parentheses in the accompanying drawings is the feature represented by both the number inside the parentheses and the number outside the parentheses. Detailed Implementation

[0057] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0058] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0059] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0060] Embodiment of the filter frame assembly 100 in this application:

[0061] In some embodiments, please refer to Figure 1 The filter frame assembly 100 includes two frames for mounting external lenses to form a filter. The two frames are a first frame 101 and a second frame 102, which are stacked together. In some other embodiments, the filter frame assembly 100 may also include more than two frames, such as three, four, or more. The filter frame assembly 100 is described below with the frames in conjunction with their corresponding external lenses.

[0062] In some embodiments, the first frame 101 and the second frame 102 have the same structure.

[0063] Please refer to all factors. Figure 2 , Figure 3 , Figure 4 and Figure 5 The first frame 101 has a first lens mounting space 1011, and a first outer lens 201 is mounted in the first lens mounting space 1011 of the first frame 101. In some embodiments, the first frame 101 is annular, and the first outer lens 201 is a corresponding circular lens. In other embodiments, depending on the shape of the lens of the photographic device to which the first frame 101 is applied, the first frame 101 can also be other shapes, such as a rectangular ring or a triangular ring, and the shape of the first outer lens 201 is adapted to the shape of the first frame 101.

[0064] Please refer to Figure 4 and Figure 5 The first frame 101 also includes a first magnet 1012, which is installed inside the first frame 101. Please refer to [reference needed]. Figure 6 and Figure 7 The second frame 102 has a second magnet 1022, which enables magnetic connection between the two filters.

[0065] Regarding the arrangement of the first magnet 1012, in some embodiments, in conjunction with the annular structure of the first frame 101, the first magnet 1012 is arranged circumferentially around the first frame 101. This ensures a reliable magnetic connection between the first frame 101 and the second frame 102 even when the first frame 101 is rotated for angle adjustment. In other embodiments, for non-circular first frames 101, since there is no need for rotational angle adjustment, a relatively small number of first magnets 1012 can be arranged circumferentially around the first frame 101 at intervals, while maintaining a reliable magnetic connection, to reduce the weight of the first frame 101.

[0066] Please refer to Figure 4 and Figure 5 In the direction from the outer periphery to the center of the first frame 101, the first outer lens 201 is located inside the first magnet 1012. The thickness direction of the first outer lens 201 is defined as the vertical direction. The upper surface of the first outer lens 201 is lower than the upper surface of the first magnet 1012, and the lower surface of the first outer lens 201 is higher than the lower surface of the first magnet 1012. Thus, when projected onto the first frame 101 in the direction from the outer periphery to the center, the projection of the first magnet 1012 and the projection of the first outer lens 201 can coincide.

[0067] Please refer to Figure 6 and Figure 7The space in the second frame 102 for mounting the second external lens 202 is called the second lens mounting space 1021. After the first frame 101 and the second frame 102 are stacked and connected, neither the first external lens 201 nor the second external lens 202 will be sandwiched between the first magnet 1012 and the second magnet 1022 of the two frames, ensuring that the distance between the first magnet 1012 and the second magnet 1022 of the two frames is as small as possible to generate the largest possible magnetic attraction force and improve the reliability of the magnetic connection of the filter using the two frames.

[0068] Please refer to Figure 2 , Figure 3 and Figure 5 The first frame 101 includes a first connecting ring 1013 and a second connecting ring 1014, wherein the first connecting ring 1013 further includes a first annular portion 10131 and a second annular portion 10132. In the direction from the outer periphery to the center of the first frame 101, the second annular portion 10132 is connected to the inner side of the first annular portion 10131, and at least a portion of the second annular portion 10132 protrudes downward (the vertical direction is the thickness direction of the first outer lens 201, which is also the thickness direction of the first frame 101) from the first annular portion 10131 to form a protruding portion, and the cavity enclosed by the first annular portion 10131 constitutes a first mounting space 10133.

[0069] Please refer to Figure 7 The second frame 102 includes a third connecting ring 1023 and a fourth connecting ring 1024, wherein the third connecting ring 1023 further includes a third annular portion 10231 and a fourth annular portion 10232. In the direction from the outer periphery to the center of the second frame 102, the fourth annular portion 10232 is connected to the inner side of the third annular portion 10231, and at least a portion of the fourth annular portion 10232 protrudes downward (the vertical direction is the thickness direction of the second outer lens 202, which is also the thickness direction of the second frame 102) from the third annular portion 10231 to form a protruding portion, and the cavity enclosed by the third annular portion 10231 constitutes the second mounting space 10233.

[0070] The inner diameter of the second mounting space 10233 is equivalent to the outer diameter of the protruding part of the second ring body 10132. When the first frame 101 and the second frame 102 are stacked and assembled, the second ring body 10132 can be inserted into the second mounting space 10233 to achieve the positioning of the first frame 101 and the second frame 102 in the direction from the outer periphery to the center of the filter.

[0071] The second annular portion 10132 has a support surface 10134 for supporting the first outer lens 201. The support surface 10134 is annular and faces upward. The second annular portion 10132 also has a first magnet mounting groove 10135 for mounting the first magnet 1012. The opening of the first magnet mounting groove 10135 faces upward. The second connecting ring 1014 is connected to the first connecting ring 1013. Please refer to... Figure 8 The second connecting ring 1014 has a second threaded ring 10141 located at the center along its radial direction, and also has a first positioning portion 10142 located inside the second threaded ring 10141 and a second positioning portion 10143 located outside the second threaded ring 10141. The first positioning portion 10142 is a flange protruding inward relative to the second threaded ring 10141, and the second positioning portion 10143 is a cover plate structure protruding outward relative to the second threaded ring 10141.

[0072] The fourth connecting ring 1024 has a fourth threaded ring 10241 located at the center along its radial direction, and also has a third positioning portion 10242 located inside the fourth threaded ring 10241 and a fourth positioning portion 10243 located outside the fourth threaded ring 10241. The third positioning portion 10242 is a flange protruding inward relative to the fourth threaded ring 10241 and a cover plate structure protruding outward relative to the fourth threaded ring 10241.

[0073] Please refer to Figure 5 The first magnet mounting groove 10135 has a threaded structure on its groove wall near the support surface 10134, forming a first threaded ring 10136. The first threaded ring 10136 has an internal thread, and the second threaded ring 10141 has an external thread. The second connecting ring 1014 is connected to the first connecting ring 1013 through the threaded connection of the first threaded ring 10136 and the second threaded ring 10141. After the connection is completed, the first positioning part 10142 presses the first external lens 201 onto the support surface 10134, and the second positioning part 10143 covers the opening of the first magnet mounting groove 10135 to prevent the first magnet 1012 from coming out of the first magnet mounting groove 10135. The first connecting ring 1013 and the second connecting ring 1014 can be made of aluminum alloy.

[0074] In other embodiments, the first threaded ring 10136 may have external threads, and the second threaded ring 10141 may have internal threads. The first threaded ring 10136 may not be the groove wall of the first magnet mounting groove 10135, but rather a specially designed ring structure. Regarding the connection method between the first connecting ring 1013 and the second connecting ring 1014, in some other embodiments, it may be a snap-fit ​​connection, or the second connecting ring 1014 may be fixed to the first connecting ring 1013 by threaded fasteners.

[0075] To ensure a reliable magnetic connection between the first frame 101 and the second frame 102, the second annular portion 10132 of the first frame 101 can fit against the fourth positioning portion 10243 of the cover plate structure of the second frame 102. In the connected state, the first magnet 1012 and the second magnet 1022 of both the first frame 101 and the second frame 102 are correspondingly positioned. Furthermore, the sum of the thickness of the bottom of the first magnet mounting groove 10135 and the thickness of the fourth positioning portion 10243 is no greater than 2mm. Thus, the distance between the first magnet 1012 of the first frame 101 and the second magnet 1022 of the second frame 102 is no greater than 2mm, ensuring a reliable magnetic connection between the first frame 101 and the second frame 102. In some other embodiments, the sum of the thickness of the bottom of the first magnet mounting groove 10135 and the thickness of the fourth positioning portion 10243 can be greater than 2mm but less than 3mm, or less than 2mm, such as 1.5mm.

[0076] In some embodiments, in addition to magnetic connection, the first frame 101 can also be connected to the second frame 102 via a hook connection structure. Please refer to... Figure 2 , Figure 3 , Figure 9 and Figure 10 The filter frame assembly 100 also includes a first snap-fit ​​structure 103, which is movably mounted on the first frame 101. The first snap-fit ​​structure 103 includes an operating part 1031 and a hook part 1032. The operating part 1031 is connected to the hook part 1032. Applying force to the operating part 1031 drives the hook part 1032 to move. The hook part 1032 has a locked position and an unlocked position along its travel. The operating part 1031 can move the hook part 1032 from the locked position to the unlocked position. Specifically, the hook part 1032 is located in the second ring portion 10132. In the locked position, the hook part 1032 extends out of the second ring portion 10132; in the unlocked position, the hook part 1032 retracts into the second ring portion 10132. The operating part 1031 is located in the first ring portion 10131.

[0077] Please refer to Figure 11 The filter frame assembly 100 also includes a first elastic reset member 104, which is disposed between the first snap-fit ​​structure 103 and the first frame 101. After the force applied to the operating part 1031 is removed, the first elastic reset member 104 can drive the hook part 1032 to reset from the unlocked position to the locked position.

[0078] In some embodiments, the first elastic reset member 104 is a compression spring press-fitted between the first snap-fit ​​structure 103 and the first frame 101. In other embodiments, the first elastic reset member 104 is a rubber block press-fitted between the first snap-fit ​​structure 103 and the first frame 101. The first elastic reset member 104 may also be a tension spring connected between the first snap-fit ​​structure 103 and the first frame 101. In the unlocked position, the tension spring is stretched and stores energy. Of course, the filter frame assembly 100 may also be without the first elastic reset member 104. The hook 1032 is moved from the unlocked position to the locked position by the pull-out operation part 1031. In order to keep the hook 1032 in the locked position, a positioning structure can be provided between the hook 1032 and the first frame 101, such as a locking groove provided on the first frame 101 and a locking protrusion provided on the hook 1032. The locking protrusion and the locking groove cooperate to keep the hook 1032 in the locked position.

[0079] Please refer to Figure 7 The second frame 102 has a second snap-fit ​​structure 105. In some embodiments, the second snap-fit ​​structure 105 is a second annular groove 1025 located inside the third annular portion 10231, with the opening of the second annular groove 1025 facing the inside of the third annular portion 10231. A second elastic washer 106 is provided inside the second annular groove 1025. In the locked position, the hook portion 1032 of the first frame 101 is inserted into the second annular groove 1025, and the hook portion 1032 engages with the groove wall of the second annular groove 1025 to achieve a hook-and-loop connection. Further, the hook portion 1032 abuts against the second elastic washer 106 radially along the first frame 101. By abutting against the second elastic washer 106, damping is generated between the first frame 101 and the second frame 102, which allows the first frame 101 to maintain its position relative to the second frame 102 after the angle of the first frame 101 has been adjusted. In the unlocked position, the hook 1032 disengages from the second snap-fit ​​structure 105, releasing the hook-and-loop connection, allowing the two connected filters to be separated.

[0080] The first frame 101 is provided with a third snap-fit ​​structure 107. In some embodiments, the third snap-fit ​​structure 107 is a first annular groove 1015 located inside the first annular body portion 10131. The opening of the first annular groove 1015 faces the inside of the first annular body portion 10131, and a first elastic washer 108 is provided inside the first annular groove 1015.

[0081] The filter frame assembly 100 also includes a fourth snap-fit ​​structure 1060 disposed on the second frame 102. The fourth snap-fit ​​structure 1060 includes a hook 1061 and a body 1062 connected together. As mentioned above, the first frame 101 and the second frame 102 have the same structure, and the fourth snap-fit ​​structure 1060 has the same structure as the first snap-fit ​​structure 103. The hook 1061 is equivalent to the hook portion 1032, and the body 1062 is equivalent to the operating portion 1031. By setting the third snap-fit ​​structure 107 and the fourth snap-fit ​​structure 1060, the first frame 101 and the second frame 102 can be connected in interchangeable positions. That is, the fourth ring portion 10232 is inserted into the first mounting space 10133, the hook 1061 is hooked and engaged with the third snap-fit ​​structure 107, and the body 1062 can be used by the operator to apply force to drive the hook 1061 to move from the locked position to the unlocked position. A second elastic reset member 1070 is provided between the fourth snap-fit ​​structure 1060 and the second frame 102. The structure, installation structure and working method of the second elastic reset member 1070 are the same as those of the first elastic reset member 104.

[0082] Taking the first frame 101 as an example, the edge of the second positioning part 10143 extends to the opening of the first annular groove 1015, so that the second positioning part 10143 can limit the first elastic washer 108 to prevent the first elastic washer 108 from coming out of the first annular groove 1015. The first elastic washer 108 and the second elastic washer 106 can be rubber rings.

[0083] Please refer to Figure 12 The first elastic washer 108 (the second elastic washer 106 is the same) has a main ring body 1081 and an inner convex portion 1082. The main ring body 1081 is placed in the first ring groove 1015, and the inner convex portion 1082 protrudes radially inward relative to the main ring body 1081 along the first frame 101, so that the inner convex portion 1082 is pressed against the first connecting ring 1013 by the second positioning part 10143. The second positioning part 10143 compresses the inner convex portion 1082 into elastic deformation, and the inner convex portion 1082 applies a reverse force to the second positioning part 10143, which can increase the friction of the threaded connection between the second connecting ring 1014 and the first connecting ring 1013, and play a role in preventing the second connecting ring 1014 from loosening. The same applies to the engagement between the fourth connecting ring 1024 of the second frame 102 and the second elastic washer 106.

[0084] For details regarding the specific structure of the first snap-fit ​​structure 103, please refer to some embodiments. Figure 13 The first snap-fit ​​structure 103 is an integral structure, with the hook portion 1032 and the operating portion 1031 connected by the connecting portion 1033. Please refer to... Figure 14The first connecting ring 1013 of the first frame 101 is provided with a hook mounting groove 1016. The opening of the hook mounting groove 1016 is located on the outer side of the first frame 101. The first groove portion 10161 of the hook mounting groove 1016 is located on the first ring portion 10131, and the second groove portion 10162 is located on the second ring portion 10132. The first snap-fit ​​structure 103 is inserted into the hook mounting groove 1016 along the direction from the outer periphery to the center of the first frame 101. The operating part 1031 protrudes from the first groove portion 10161 for the operator to operate. The hook portion 1032 can extend and retract into the second ring portion 10132. The first part 10331 of the connecting part 1033 is located in the first groove portion 10161, and the second part 10332 is located in the second groove portion 10162.

[0085] A connecting hole 1017 is provided on the first ring body portion 10131, and a mounting hole 1034 is provided on the first portion 10331 of the first snap-fit ​​structure 103. The mounting hole 1034 extends through the first portion 10331 along the thickness direction of the first outer lens 201. The first snap-fit ​​structure 103 is mounted on the first connecting ring 1013 by a screw 109 that passes through the mounting hole 1034 and is threadedly connected to the connecting hole 1017. The screw 109 acts as a limiting structure to prevent the first snap-fit ​​structure 103 from dislodging from the hook mounting groove 1016. Specifically, the mounting hole 1034 is an elongated hole extending from the outer periphery to the center of the first frame 101, allowing the first snap-fit ​​structure 103 to move relative to the screw 109. With this structure, after the first snap-fit ​​structure 103 is installed into the snap hook mounting groove 1016, the screw 109 can be installed in place to prevent the first snap-fit ​​structure 103 from coming out of the snap hook mounting groove 1016. When disassembling the first snap-fit ​​structure 103, the screw 109 can be removed directly and the first snap-fit ​​structure 103 can be pulled out of the snap hook mounting groove 1016.

[0086] To ensure the smooth movement of the first snap-fit ​​structure 103, a guide structure is also provided between the first snap-fit ​​structure 103 and the first frame 101. In some embodiments, a guide post 1010 is provided on the groove wall facing the groove opening of the second groove portion 10162 of the hook mounting groove 1016, and a guide hole 1020 is provided on the second part 10332 of the first snap-fit ​​structure 103. The guide post 1010 and the guide hole 1020 are inserted to guide the movement of the first snap-fit ​​structure 103.

[0087] In some other embodiments, the guide post 1010 may be disposed on the first snap-fit ​​structure 103, and the guide hole 1020 may be disposed on the first frame 101. In addition to the guide hole 1020, the second part 10332 is also provided with a receiving groove for accommodating the first elastic reset member 104. One end of the first elastic reset member 104 is accommodated in the receiving groove and abuts against the bottom of the groove, while the other end abuts against the first frame 101. By having one end disposed in the receiving groove, the first elastic reset member 104 is reliably held in its installation position.

[0088] To ensure reliable connection, two first snap-fit ​​structures 103 are provided circumferentially along the first frame 101. The two first snap-fit ​​structures 103 are positioned opposite each other along the diameter of the first frame 101. During installation, the two hooks 1032 can be moved to the unlocked position by pressing the two operating parts 1031 with two fingers, and then the first frame 101 and the second frame 102 can be stacked and assembled. In some other embodiments, the number of first snap-fit ​​structures 103 can be more than two, such as three or four. The operating parts 1031 and hooks 1032 can also be separate structures, and the operating parts 1031 and hooks 1032 are connected by a transmission mechanism so that the operating parts 1031 can drive the hooks 1032 to move. Given that the first frame 101 and the second frame 102 have the same structure, the above-described installation structure of the first snap-fit ​​structure 103 on the first frame 101 is the same as the installation structure of the fourth snap-fit ​​structure 1060 on the second frame 102.

[0089] In some other embodiments, when the first frame 101 and the second frame 102 are not annular, and since the filters do not rotate to adjust their angles during use, the third snap-fit ​​structure 107 and the second snap-fit ​​structure 105 on the first frame 101 can also be hole structures located inside the corresponding frames. The size of the hole structure only needs to be sufficient to hook and engage with the corresponding hook 1032 and latch 1061. Correspondingly, the third snap-fit ​​structure 107 does not need to be provided with the first elastic washer 108, and the second snap-fit ​​structure 105 does not need to be provided with the second elastic washer 106.

[0090] In some other embodiments, the structures of the first snap-fit ​​structure 103 and the fourth snap-fit ​​structure 1060 may be different. Correspondingly, the structures of the second snap-fit ​​structure 105 and the third snap-fit ​​structure 107 are also different. It is only necessary to ensure that the first snap-fit ​​structure 103 can be adapted to the second snap-fit ​​structure 105 and the third snap-fit ​​structure 107 can be adapted to the fourth snap-fit ​​structure 1060.

[0091] Please refer to Figure 1 The filter holder assembly 100 also includes a connector 1030. The connector 1030 has a lens connection structure and a filter connection structure; please refer to [reference needed]. Figure 15 and Figure 16 The connector 1030 has a ring structure, and its lens connection structure is a threaded connection structure 10301, allowing the connector 1030 to be threaded onto the lens of the photographic equipment. The filter connection structure includes a magnetic structure 10302, which can be a magnet or other material that can be magnetically attracted, allowing the second lens holder 102 to be magnetically attached to the connector 1030. In other embodiments, the filter connection structure may also include, or only include, a connector hook structure, which can engage with a hook 1061 on the second lens holder 102 to achieve a hook connection between the filter and the connector 1030. For example, the connector hook structure may be a groove structure 10303 that engages with the hook 1061.

[0092] The filter frame assembly 100 also includes a first lens cap 1040 and a second lens cap 1050. Both the first lens cap 1040 and the second lens cap 1050 have magnetic adsorption structures, which enable the first lens cap 1040 and the second lens cap 1050 to be magnetically attached to both sides of the assembly formed by stacking the first frame 101 and the second frame 102, thereby protecting the filter.

[0093] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A filter frame assembly, characterized in that, include: The first eyeglass frame has a first lens mounting space, which is used to mount an external lens. The first snap-fit ​​structure includes a hook and an operating part connected together. The hook is movably mounted on the first eyeglass frame and has a locking position and an unlocking position during the movement of the first eyeglass frame. The second frame has a second lens mounting space for mounting an external lens. A second snap-fit ​​structure is provided on the second frame; In the locked position, the hook is hooked to the second snap-fit ​​structure, and the operating part can be driven by force to move the hook. In the unlocked position, the hook can disengage from the second snap-fit ​​structure to release the connection between the first frame and the second frame.

2. The filter frame assembly as described in claim 1, characterized in that, The first frame includes a first ring portion and a second ring portion. In the direction from the outer periphery to the center of the first frame, the second ring portion is connected to the inner side of the first ring portion, and the second ring portion at least partially protrudes from the first ring portion along the thickness direction of the first frame. The second frame includes a third ring portion and a fourth ring portion. In the direction from the outer periphery to the center of the second frame, the fourth ring portion is connected to the inner side of the third ring portion, and the fourth ring portion at least partially protrudes from the third ring portion along the thickness direction of the second frame. The third ring portion forms an installation space, the size of which is adapted to the size of the second ring portion, so that the second ring portion can be inserted into the installation space to achieve positioning of the first frame and the second frame in the direction from the outer periphery to the center of the first frame. The hook portion is provided on the second ring portion, and the second snap-fit ​​structure is a ring groove provided on the inner side of the third ring portion.

3. The filter frame assembly as described in claim 2, characterized in that, The first ring body portion has a third snap-fit ​​structure on its inner side; the filter frame assembly also includes a fourth snap-fit ​​structure, the fourth snap-fit ​​structure includes a hook and a body connected to each other, the hook is movably installed on the fourth ring body portion, the hook can hook and connect with the third snap-fit ​​structure, so that the first frame and the second frame are connected; The main body can be driven by force to move the hook, so that the hook can disengage from the third locking structure, thereby releasing the connection between the first frame and the second frame.

4. The filter frame assembly as described in claim 2, characterized in that, The first snap-fit ​​structure is an integral structure. The first frame is provided with a hook mounting groove. The opening of the hook mounting groove is located on the outer side of the first frame. The hook mounting groove includes a first groove and a second groove. The first groove is located in the first ring body portion, and the second groove is located in the second ring body portion. The operating part protrudes from the first groove, and the hook can extend and retract into the second groove to realize the switching of the hook's position between the locked position and the unlocked position.

5. The filter frame assembly as described in claim 4, characterized in that, The operating part and the hook part have a connecting part, the connecting part includes a first part located in the first groove and a second part located in the second groove, and a guide structure is provided between the second part and the second groove.

6. The filter frame assembly as described in claim 5, characterized in that, The guide structure includes a guide post and a guide hole that mates with the guide post. One of the guide post and the guide hole is located in the second part, and the other is located in the groove wall of the second groove.

7. The filter frame assembly as described in claim 5, characterized in that, The first part is provided with a mounting hole that penetrates the first part along the thickness direction of the first frame. A limiting structure is provided between the first part and the first frame. The limiting structure is installed in the mounting hole and fixed on the first frame to prevent the first snap-fit ​​structure from coming out of the snap-fit ​​mounting groove.

8. The filter frame assembly as described in claim 7, characterized in that, The mounting hole is a countersunk hole, which is an elongated hole extending from the outer periphery to the center of the first frame. The limiting structure includes a screw, the head of which can be recessed into the countersunk hole. The first locking structure can move relative to the screw.

9. The filter frame assembly as described in any one of claims 1-8, characterized in that, The filter frame assembly further includes an elastic reset member disposed between the first snap-fit ​​structure and the first frame, the elastic reset member being used to drive the hook portion to reset to the locking position.

10. The filter frame assembly as described in any one of claims 1-8, characterized in that, The filter frame assembly also includes an elastic washer disposed within the second frame, and the hook engages with the elastic washer at the locking position.

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