Magnetic type filter device

Abstract

The utility model relates to a magnetic type filter device, comprising an adapter ring used for being assembled at the front end of a lens; the filter comprises a filter frame and a lens, and the lens is assembled on the filter frame; when the filter is used, more than one filter is sequentially stacked at the front end of the adapter ring, the adapter ring and the adjacent filter are mutually magnetically attracted, and the adjacent filters are mutually magnetically attracted; moreover, a first fastening part and a second fastening part are respectively arranged at the mutual magnetic attraction end of the adapter ring and the filter frame of the adjacent filter and the mutual magnetic attraction end of the filter frame of the adjacent filter, and the first fastening part and the second fastening part are mutually fastened through mutual rotation between the adapter ring and the filter and between the filters, so that locking is realized; the use safety and the carrying convenience of the magnetic type filter device are improved, and the locking and unlocking operations are simple, convenient, rapid and stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of photographic equipment, and particularly relates to a magnetic filter device. Background Art

[0002] At present, filters are one of the most commonly used photographic equipment. Among them, magnetic filters are popular among photography enthusiasts for their advantages of convenient use and installation. However, the applicant has found that magnetic filters on the existing market have the problem of being easily dropped when touching a certain point (certain specific positions) during use, and the use safety is relatively low. Content of the Utility Model

[0003] In order to solve the above problems existing in the prior art, the utility model provides a magnetic filter device.

[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A magnetic filter device described in the utility model includes:

[0006] An adapter ring for being assembled at the front end of a lens;

[0007] One or more filters, the filter includes a filter frame and a lens, and the lens is assembled on the filter frame; during use, one or more of the filters are stacked in sequence at the front end of the adapter ring, and the adapter ring and the adjacent filter are magnetically attracted to each other, and adjacent filters are magnetically attracted to each other;

[0008] Moreover, the magnetically attracted ends of the adapter ring and the filter frame of the adjacent filter, and the magnetically attracted ends of the filter frames of adjacent filters are respectively provided with a first fastening part and a second fastening part. By rotating the adapter ring and the filter relative to each other, and the filter and the filter relative to each other, the first fastening part and the second fastening part are buckled with each other to achieve locking.

[0009] Furthermore, first convex rings are provided on the front end faces of the adapter ring and the filter frame, a first fastening part is provided on the inner wall of the first convex ring, a second convex ring is provided on the rear end face of the filter frame, and a second fastening part is provided on the outer wall of the second convex ring; during assembly and use, the second convex ring and the second fastening part are both placed inside the inner ring of the first convex ring, and the second fastening part is buckled with or separated from the first fastening part along with the relative rotation of the second convex ring and the first convex ring; or,

[0010] Both the front end faces of the adapter ring and the filter frame are provided with second convex rings. The outer wall of the second convex ring is provided with second fastening parts. The rear end face of the filter frame is provided with a first convex ring, and the inner wall of the first convex ring is provided with first fastening parts. When assembled and used, the second convex ring and the second fastening parts are both placed inside the inner ring of the first convex ring, and the second fastening parts are engaged with or separated from the first fastening parts along with the relatively rotating second convex ring and first convex ring.

[0011] Furthermore, the number of the first fastening parts is more than two and they are annularly distributed on the inner wall of the first convex ring; the number of the second fastening parts is more than two and they are annularly distributed on the outer wall of the second convex ring.

[0012] Furthermore, the inner wall of the first convex ring is provided with two or three or four of the first fastening parts and they are distributed in an annular array; the outer wall of the second convex ring is provided with two or three or four of the second fastening parts and they are distributed in an annular array.

[0013] Furthermore, the first fastening parts protrude and extend towards the axis direction of the first convex ring and form fastening positions on the inner wall of the first convex ring; when locked, the second fastening parts rotate into the fastening positions and are engaged with the first fastening parts.

[0014] Furthermore, the peripheral surface of the filter frame is provided with lugs for disassembling and assembling the filter.

[0015] Furthermore, the outer end of the lug is provided with a recessed part, and the recessed surface of the recessed part is provided with anti-slip lines.

[0016] Furthermore, there are more than two lugs, which are annularly distributed on the peripheral surface of the filter frame.

[0017] Furthermore, the peripheral surface of the adapter ring is provided with a locking mark, and the locking mark is aligned with one of the first fastening parts of the adapter ring.

[0018] Furthermore, the magnetic filter device further includes a protective cover. When in use, the protective cover is stacked on the front end of the filter and magnetically attracted to the filter, and the magnetically attracted ends are respectively provided with first fastening parts and second fastening parts.

[0019] Advantages of the present utility model:

[0020] Through the above technical solutions, the present utility model can lock and unlock between the adapter ring and the adjacent filter, and between adjacent filters by rotating the filter, improving the use safety, solving the problem that the existing magnetic filters are prone to separation and dropping during use, and at the same time improving the convenience and safety of carrying. Moreover, the locking and unlocking operations are simple, convenient and fast. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the magnetic adsorption type filter device according to an embodiment of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the adapter ring in the magnetic adsorption type filter device according to an embodiment of the present invention;

[0023] Figure 3 It is a front view structural diagram of the filter in the magnetic adsorption type filter device according to an embodiment of the present invention;

[0024] Figure 4 It is a rear view structural diagram of the filter in the magnetic adsorption type filter device according to an embodiment of the present invention.

[0025] Explanation of reference numerals: 1. Adapter ring, 2. Filter, 3. Filter frame, 4. Lens, 5. First fastening part, 6. Second fastening part, 7. First convex ring, 8. Second convex ring, 9. Buckling position, 10. Lug, 11. Depressed part, 12. Anti-slip pattern, 13. Protective cover, 14. Threaded part. Detailed implementation manners

[0026] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] See Figure 1 As shown in the figure, a magnetic adsorption type filter device according to an embodiment of the present invention includes an adapter ring 1 and more than one filter 2.

[0028] Among them, the adapter ring 1 is used to be assembled at the front end of the lens; the specific structure can be: a threaded part 14 is provided at the rear end of the adapter ring 1, and the adapter ring 1 is detachably assembled at the front end of the lens through the threaded part 14.

[0029] The filter 2 includes a filter frame 3 and a lens 4. The lens 4 can be one of a star filter, a UV filter, a polarizing filter, a soft focus filter, and a neutral density graduated filter (ND filter), and is assembled on the filter frame 3. As shown in the figure, the filter frame 3 is a circular frame, and the lens 4 is installed in the ring in the middle of the circular frame.

[0030] When the magnetic filter device of the present utility model is in use, first install the adapter ring 1 at the front end of the lens, and then stack more than one filter 2 in sequence at the front end of the adapter ring 1 according to the shooting needs. At this time, the adapter ring 1 and the adjacent filter 2 are magnetically attracted to each other, and the adjacent filters 2 are magnetically attracted to each other. Specifically, the adapter ring 1 and the adjacent filter 2 and the adjacent filters 2 are magnetically attracted to each other through the magnetic blocks provided thereon (i.e., magnetic blocks are embedded in the filter frames 3 of the adapter ring 1 and the filter 2), which belongs to the prior art and will not be elaborated here.

[0031] As Figures 1-4 shown, at the magnetically attracted ends of the adapter ring 1 of the magnetic filter device of the present utility model and the filter frame 3 of the adjacent filter 2, and at the magnetically attracted ends of the filter frames 3 of the adjacent filters 2, a first fastening portion 5 and a second fastening portion 6 are respectively provided; the specific structure can be: first convex rings 7 are provided on the front end faces of the adapter ring 1 and the filter frame 3, the inner wall of the first convex ring 7 is provided with the first fastening portion 5, the rear end face of the filter frame 3 is provided with a second convex ring 8, and the outer wall of the second convex ring 8 is provided with the second fastening portion 6. Among them, the number of the first fastening portions 5 is two or more, and they are annularly distributed on the inner wall of the first convex ring 7. The first fastening portion 5 protrudes and extends towards the axis direction of the first convex ring 7, and a buckling position 9 is formed on the inner wall of the first convex ring 7 (specifically, the first fastening portion 5 and the inner wall of the first convex ring 7 and the front end face of the adapter ring 1 or the front end face of the filter frame 3 jointly form the buckling position 9, as Figure 2 ); the number of the second fastening portions 6 is two or more, and they are annularly distributed on the outer wall of the second convex ring 8; preferably, two (three or four can also be provided) first fastening portions 5 are provided on the inner wall of the first convex ring 7 and are distributed in an annular array; two (three or four can also be provided) second fastening portions 6 are provided on the outer wall of the second convex ring 8 and are distributed in an annular array. The first fastening portion 5 and the first convex ring 7 and its adapter ring 1 or the filter frame 3 of the filter 2 are of an integrated structure, and the second fastening portion 6 and the filter frame 3 of the filter 2 are of an integrated structure.

[0032] When the magnetic filter device is assembled and used, the second convex ring 8 and the second fastening part 6 are both placed inside the inner ring of the first convex ring 7. Then rotate the filter 2 to make the second convex ring 8 and the first convex ring 7 rotate relative to each other. The second fastening part 6 moves inside the inner ring of the first convex ring 7 along with the second convex ring 8 until it overlaps with the first fastening part 5 and they are fastened to each other (that is, the second fastening part 6 rotates into the fastening position 9 and is fastened to the first fastening part 5), thereby realizing the locking of the adapter ring 1 and the adjacent filter 2, realizing the locking of adjacent filters 2, improving the use safety, solving the problem that the existing magnetic filters are prone to separation and dropping during use, and at the same time improving the convenience and safety of carrying; for disassembly, continue to rotate or reverse-rotate the filter 2 to completely stagger and separate the second fastening part 6 from the first fastening part 5, realizing the unlocking of the adapter ring 1 and the adjacent filter 2, realizing the unlocking of adjacent filters 2, and then the filter 2 can be disassembled.

[0033] In addition, for the magnetic filters on the existing market, due to the directionality of magnetism, it is difficult to separate the mutually magnetized adapter ring and filter, and between filters. Usually, users squeeze their nails between the adapter ring and the filter, and between filters to break them apart. The disassembly is extremely inconvenient and often touches the lens of the filter, causing lens contamination and even nail breakage.

[0034] Therefore, as Figure 1 , 3 , as shown in Figure 4, the present utility model is provided with lugs 10 on the circumferential surface of the filter frame 3. Preferably, there are two lugs 10 (it can also be three, four or more), and they are distributed in a circumferential array on the circumferential surface of the filter frame 4. Specifically, the lugs 10 are installed on the circumferential surface of the filter frame 3 by screws. Of course, they can also be an integral structure with the filter frame 3. When disassembling the filter 2, the user can respectively hold the corresponding lugs 10 with more than two fingers, and then can easily and quickly complete the disassembly and assembly operation of the filter 2. Moreover, the entire operation process will not touch the lens 4 of the filter 2, ensuring the cleanliness of the lens 4 and avoiding scratching of the lens 4, thereby improving the shooting quality.

[0035] Preferably, the outer end of the lug 10 is provided with a recessed part 11 to conform to ergonomics, so that the fingers can hold the lug 10 more stably and comfortably. Moreover, the recessed surface of the recessed part 11 is provided with anti-slip lines 12. The anti-slip lines 12 can be multiple horizontally arranged parallel grooves, or intersecting mesh grooves, or more than one rib. By the anti-slip lines 12, the friction between the recessed part 11 and the fingers is increased, further improving the stability and safety of the disassembly and assembly operation.

[0036] In addition, a locking mark (not shown in the figure) is provided on the circumferential surface of the adapter ring 1 of the present utility model. The locking mark can be a color marking area or a marking point, etc. The locking mark is opposite to one of the first fastening parts 5 of the adapter ring 1. When the lug 10 of the filter 2 rotates to the locking mark, the second locking part 6 of the filter 2 and the first fastening part 5 of the adapter ring 1 are buckled with each other, which improves the operation accuracy and speed of the user when disassembling and assembling the filter 2 for rotating the filter 2.

[0037] As Figure 1 shown, the magnetic filter device further includes a protective cover 13. When in use, the protective cover 13 is stacked on the front end of the filter 2 and magnetically attracts with the filter 2, and the first fastening part 5 and the second fastening part 6 are respectively provided on the magnetically attracting ends. For the convenience of disassembling and assembling the protective cover 13, the circumferential surface of the protective cover 13 can also be provided with lugs 10 the same as those of the filter 2.

[0038] Certainly, the present utility model can also be provided with second convex rings 8 on the front end faces of the adapter ring 1 and the filter frame 3. The outer wall of the second convex ring 8 is provided with a second fastening part 6. Correspondingly, a first convex ring 7 is provided on the rear end face of the filter frame 3, and the inner wall of the first convex ring 7 is provided with a first fastening part 5. When assembled and used, the second convex ring 8 and the second fastening part 6 are both placed inside the inner ring of the first convex ring 7, and the second fastening part 6, along with the relatively rotating second convex ring 8 and first convex ring 7, is buckled with or separated from the first fastening part 5.

[0039] The above is the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A magnetic filter device, characterized in that: include: An adapter ring (1) is used for being assembled on the front end of the lens; More than one filter (2), the filter (2) comprising a filter frame (3) and a lens (4), the lens (4) being mounted on the filter frame (3); when in use, the more than one filter (2) is sequentially stacked on the front end of the adapter ring (1), and the adapter ring (1) and the adjacent filter (2) are magnetically attracted to each other, and the adjacent filters (2) are magnetically attracted to each other; Furthermore, the mutual magnetic ends of the adapter ring (1) and the filter frame (3) of the adjacent filter (2), as well as the mutual magnetic ends of the filter frames (3) of the adjacent filters (2), are respectively provided with a first fastening portion (5) and a second fastening portion (6); and through the mutual rotation between the adapter ring (1) and the filter (2), and between the filters (2), the first fastening portion (5) and the second fastening portion (6) are fastened to each other, thereby achieving locking.

2. The magnetic filter device according to claim 1, characterized in that: The front end faces of the adapter ring (1) and the filter frame (3) are both provided with a first convex ring (7), the inner wall of the first convex ring (7) is provided with a first fastening portion (5), and the rear end face of the filter frame (3) is provided with a second convex ring (8), the outer wall of the second convex ring (8) is provided with a second fastening portion (6); when assembled and used, the second convex ring (8) and the second fastening portion (6) are both placed inside the inner ring of the first convex ring (7), and the second fastening portion (6) is fastened or separated from the first fastening portion (5) as the second convex ring (8) and the first convex ring (7) rotate relative to each other; or, The front end faces of the adapter ring (1) and the filter frame (3) are both provided with a second convex ring (8), the outer wall of the second convex ring (8) is provided with a second fastening portion (6), and the rear end face of the filter frame (3) is provided with a first convex ring (7), the inner wall of the first convex ring (7) is provided with a first fastening portion (5); when assembled and used, the second convex ring (8) and the second fastening portion (6) are both placed inside the inner ring of the first convex ring (7), and the second fastening portion (6) is fastened or separated from the first fastening portion (5) as the second convex ring (8) and the first convex ring (7) rotate relative to each other.

3. The magnetic filter device according to claim 2, characterized in that: The number of the first fastening parts (5) is more than two, and they are distributed in an annular manner on the inner wall of the first convex ring (7); the number of the second fastening parts (6) is more than two, and they are distributed in an annular manner on the outer wall of the second convex ring (8).

4. The magnetic filter device according to claim 3, characterized in that: The inner wall of the first convex ring (7) is provided with two, three or four first fastening portions (5) distributed in an annular array; the outer wall of the second convex ring (8) is provided with two, three or four second fastening portions (6) distributed in an annular array.

5. The magnetic filter device according to claim 2, 3 or 4, characterized in that: The first fastening portion (5) protrudes and extends in the axial direction of the first convex ring (7) and forms a buckle position (9) on the inner wall of the first convex ring (7); when locked, the second fastening portion (6) rotates into the buckle position (9) and buckles with the first fastening portion (5).

6. The magnetic filter device according to claim 2, 3 or 4, characterized in that: The peripheral surface of the filter frame (3) is provided with a lug (10) to facilitate the disassembly and assembly of the filter (2).

7. The magnetic filter device according to claim 6, characterized in that: The outer end of the lug (10) is provided with a recessed portion (11), and the recessed surface of the recessed portion (11) is provided with anti-slip grooves (12).

8. The magnetic filter device according to claim 6, characterized in that: There are more than two lugs (10) distributed in a ring array on the peripheral surface of the filter frame (3).

9. The magnetic filter device according to claim 6, characterized in that: A locking mark is provided on the peripheral surface of the adapter ring (1), and the locking mark faces one of the first fastening portions (5) of the adapter ring (1).

10. The magnetic filter device according to claim 1 or 2 or 3 or 7 or 8 or 9, characterized in that: It also comprises a protective cover (13), which is stacked on the front end of the filter (2) when in use and is magnetically attracted to the filter (2), and the magnetically attracted ends are respectively provided with a first fastening portion (5) and a second fastening portion (6).

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