Combined filter structure

Abstract

The utility model discloses a combined filter structure which comprises a first filter and a second filter which are connected with each other, the first filter is rotatably connected with an adapter ring, the first filter is provided with a locking assembly used for locking the adapter ring, and the locking assembly can restrain relative rotation of the first filter and the adapter ring. During use, the adapter ring is connected with the front end of the lens, and the first filter can be rotationally adjusted relative to the adapter ring under the unlocking action of the locking assembly. When the adjustment is completed, the adapter ring and the first filter are locked under the action of the locking assembly, so that the situation that shooting is affected due to adjustment deviation caused by random rotation of the first filter is prevented.

Description

Technical Field

[0001] This utility model relates to the field of camera filter technology, and in particular to a combined filter structure. Background Technology

[0002] Existing technology, such as Chinese utility model patent document, publication number CN218158678U, discloses a multifunctional filter, which includes a main frame, a first filter assembly, and a second filter assembly. The main frame is annular; the first filter assembly is installed inside the main frame and rotatably connected to the main frame, and the first filter assembly includes a rotating part exposed outside the main frame, which allows the first filter assembly to rotate relative to the main frame. A notch is formed on the side of the first filter assembly away from the main frame; the second filter assembly is installed on the side of the first filter assembly away from the main frame and rotatably connected to the first filter assembly, and the second filter assembly includes a toggle member located within the notch and extending out of the first filter assembly; wherein, rotating one of the first and second filter assemblies can adjust the grayscale, and rotating the other of the first and second filter assemblies can adjust the polarization.

[0003] Based on the above, in the existing technology, the first filter assembly is connected to the main frame to achieve rotational adjustment, thereby adjusting grayscale or polarization. The existing technical problem is that its rotation cannot be locked, meaning that accidental touches after adjustment can easily affect the shooting effect, requiring further improvement. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a rotatable and lockable combined filter structure.

[0005] A modular filter structure designed for this purpose includes a first filter and a second filter that are interconnected. The first filter is rotatably connected to an adapter ring. The first filter is provided with a locking component for locking with the adapter ring. The locking component can constrain the first filter from rotating relative to the adapter ring.

[0006] Preferably, the rear end face of the second filter is fitted and connected to the front end face of the first filter;

[0007] The first filter is provided with a locking assembly that moves up and down relative to the first filter, and the locking assembly is used to constrain the second filter to move forward relative to the first filter.

[0008] Preferably, the first filter includes a first frame, and a first lens is fixedly disposed on the first frame;

[0009] A fixing seat is provided on the first frame, the fixing seat is provided with a locking channel, a communicating space is provided between the fixing seat and the first frame, the communicating space is connected to the locking channel, and the adapter ring is provided with a locking part, the locking part extends through the communicating space into the locking channel;

[0010] The locking component is vertically movable within the locking channel, and can engage with the locking part to lock the adapter ring relative to the first mirror frame.

[0011] Preferably, the locking assembly includes a bolt, which is threadedly connected to the locking channel, and one end of the bolt abuts against the locking part for locking.

[0012] Preferably, the locking component includes a movable member that is vertically movable within the locking channel, the lower end of the movable member having a first abutting part that abuts and locks against the locking part, and the upper end of the movable member having a pressing part.

[0013] The locking channel is provided with a first elastic element, which is used to apply a force to the moving part so that the first abutting part abuts and locks with the locking part.

[0014] Preferably, the first filter includes a first frame, and a first lens is fixedly disposed on the first frame;

[0015] The first frame is provided with a fixing seat, and the front surface of the fixing seat is provided with a longitudinal sliding groove. The locking assembly includes a locking block that is longitudinally slidably disposed in the longitudinal sliding groove.

[0016] The locking block is connected to the fixing base by a second elastic element. The second elastic element applies a force to the locking block so that the locking block fits and is limited to the front surface of the second filter.

[0017] The fixed base and the locking block are provided with a movement limiting structure, which can limit the longitudinal movement of the locking block.

[0018] Preferably, the movable limiting structure includes a limiting post disposed in the longitudinal slide groove, the locking block is provided with a limiting groove, and the limiting post is movably inserted into the limiting groove.

[0019] Preferably, guide grooves are provided on the left and right sides of the longitudinal slide groove, and sliders that are movably inserted into the guide grooves are provided on the left and right sides of the locking block.

[0020] Preferably, the rear wall of the locking block is provided with a T-shaped limiting groove, and a T-shaped limiting block is provided in the longitudinal sliding groove. The T-shaped limiting block is movably inserted into the T-shaped limiting groove, and the locking block is moved up and down relative to the T-shaped limiting block.

[0021] Preferably, the lower side of the first frame is provided with an anti-detachment protrusion that can fit and limit the front surface of the second filter.

[0022] A limiting track groove is formed between the anti-detachment protrusion and the fixing seat;

[0023] The second filter includes a second frame, a second lens is provided in the second frame, and a rotation limiting block is provided in the second frame, the rotation limiting block extending into the limiting trajectory groove;

[0024] When the second filter rotates relative to the first filter, the rotation limiting block moves within the limiting trajectory groove.

[0025] Compared with the prior art, this invention provides a locking component for locking the first filter with the adapter ring. This locking component restricts the relative rotation of the first filter and the adapter ring. In use, the adapter ring is connected to the front end of the lens. With the locking component unlocked, the first filter can rotate relative to the adapter ring for adjustment. Once adjustment is complete, the locking component locks the adapter ring and the first filter in place to prevent the first filter from rotating arbitrarily and causing adjustment deviations that could affect shooting. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of a combined filter.

[0027] Figure 2 This is one of the exploded structural diagrams of a composite filter;

[0028] Figure 3 A cross-sectional structural diagram of the first embodiment of the locking component;

[0029] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0030] Figure 5 A cross-sectional structural diagram of a second embodiment of the locking component;

[0031] Figure 6 for Figure 5 Enlarged structural diagram at point B;

[0032] Figure 7 This is the second exploded structural diagram of a composite filter;

[0033] Figure 8 This is a cross-sectional structural diagram of a composite filter.

[0034] Figure 9 This is a schematic diagram of the three-dimensional structure of the lock block;

[0035] Figure 10 A cross-sectional structural diagram of a third embodiment of the locking component;

[0036] Figure 11 for Figure 10 Enlarged structural diagram at point C. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0038] See Figures 1-11 A combined filter structure includes a first filter 10 and a second filter 20 connected to each other. The first filter 10 is rotatably connected to an adapter ring 50. The first filter 10 is provided with a locking component 40 for locking with the adapter ring 50. The locking component 40 can restrict the relative rotation of the first filter 10 and the adapter ring 50. In use, the adapter ring is connected to the front end of the lens. With the locking component unlocked, the first filter can rotate and adjust relative to the adapter ring. When the adjustment is completed, the locking component locks the adapter ring and the first filter to prevent the first filter from rotating arbitrarily and causing adjustment deviations that could affect shooting.

[0039] In this invention, the first filter 10 and the second filter are magnetically connected. During connection, the rear end face of the second filter 20 is in contact with the front end face of the first filter 10. The first filter 10 is provided with a locking assembly 30 that moves vertically relative to the first filter 10. The locking assembly 30 is used to restrain the second filter 20 from moving forward relative to the first filter 10. The locking assembly 30 further enhances the stability of the magnetic connection to prevent the first filter and the second filter from separating and falling off when the magnetic connection is unstable, thereby ensuring the connection stability of the second filter. During disassembly, the locking assembly 30 is moved upward to separate it from the second filter 20, thus removing the second filter. Installation is similar; the locking assembly 30 is moved upward to create installation space for the second filter to be assembled.

[0040] See Figure 4The first filter 10 includes a first frame 110, on which a first lens 120 is fixedly mounted. A fixing seat 150 is provided on the first frame 110, and the fixing seat 150 has a locking channel 160. A communicating space 170 is provided between the fixing seat 150 and the first frame 110, and the communicating space 170 communicates with the locking channel 160. A connecting ring 50 has a locking part 510, which extends through the communicating space 170 into the locking channel 160. A locking assembly 40 is vertically movable within the locking channel 160, and the locking assembly 40 can abut against the locking part 510 to lock the connecting ring 50 relative to the first frame 110. Under the vertical movement of the locking assembly 40, it can abut against the locking part 510 for constraint, while allowing the first filter 10 and the connecting ring 40 to rotate freely relative to each other when separated.

[0041] Furthermore, the locking part 510 has a ring structure. When in operation, even if the first filter 10 is rotated to any angle relative to the adapter ring 50, the locking component 40 can still abut against the locking part 510, making it easy to lock at any angle.

[0042] See Figure 4 In a first embodiment of the locking assembly 40, a bolt 410 is threadedly connected to the locking channel 160, and one end of the bolt 410 abuts against the locking part 510 for locking. Locking and unlocking can be achieved by tightening or loosening the bolt 410.

[0043] Further, see Figure 11 The lower end of the bolt 410 is provided with a second abutment 411 that abuts and locks against the locking part 510. The second abutment 411 is located below the locking part 510. When locking, rotating the bolt 410 causes it to move upwards, locking the second abutment 411 against the locking part 510. When unlocking, rotating the bolt 410 causes the second abutment 411 to move downwards and separate from the locking part 510, thus unlocking the bolt.

[0044] See Figure 6 In a second embodiment of the locking component 40, a movable member 420 is disposed vertically within the locking channel 160. The lower end of the movable member 420 is provided with a first abutting part 440 that abuts and locks against the locking part 510, and the upper end of the movable member 420 is provided with a pressing part 430. A first elastic element 60 is provided within the locking channel 160, and the first elastic element 60 is used to apply a force to the movable member 420 so that the first abutting part 440 abuts and locks against the locking part 510.

[0045] Under the action of the first elastic element 60, the first abutting part 440 abuts and locks with the locking part 510. When unlocking, pressing the pressing part 430 drives the moving part 420 to separate the first abutting part 440 from the locking part 510, thereby unlocking.

[0046] Furthermore, the first elastic element 60 is a spring, which is sleeved on the moving part 420, with one end connected to the inner wall of the locking channel 160 and the other end connected to the pressing part 430.

[0047] See Figures 6 to 9 The first filter 10 includes a first frame 110, on which a first lens 120 is fixedly mounted; a fixing seat 150 is provided on the first frame 110, and a longitudinal groove 151 is provided on the front surface of the fixing seat 150; the locking assembly 30 includes a locking block 610 that is longitudinally slidably disposed in the longitudinal groove 151; a second elastic element 70 is connected to the fixing seat 150, and the second elastic element 70 applies a force to the locking block 610 to make the locking block 610 fit and limit its position against the front surface of the second filter 20; a movement limiting structure is provided between the fixing seat 150 and the locking block 610, and the movement limiting structure can limit the longitudinal movement stroke of the locking block 610.

[0048] The locking block 610 of this invention prevents the second filter 20 from separating from the first filter 10 and further locks it in place. When locked, the locking block 610, under the force of the second elastic element 70, adheres and limits its position to the front surface of the second filter 20. When assembling or disassembling the second filter 20, the locking block 610 needs to be manually moved from the locked position to the unlocked position, allowing for assembly or disassembly. After assembly or disassembly, releasing the locking block 610 causes it to automatically return to the locked position under the action of the second elastic element 70, thus locking and constraining the second filter 20.

[0049] See Figures 7 to 9 The movable limiting structure includes a limiting post 650 disposed within the longitudinal slide groove 151, and a limiting groove 630 provided for the locking block 610. The limiting post 650 is movably inserted into the limiting groove 630. With the cooperation of the limiting groove 630 and the limiting post 650, the movement range of the locking block 610 can be effectively constrained, preventing the locking block 610 from disengaging from the longitudinal slide groove 151.

[0050] See Figure 8The longitudinal slide groove 151 has guide slide grooves 152 on its left and right sides, and the locking block 610 has sliders 620 on its left and right sides that are movably inserted into the guide slide grooves 152. The sliding engagement between the sliders 620 and the guide slide grooves 152 can effectively enhance sliding stability. At the same time, the engagement of the two can constrain the forward and backward movement and the left and right movement of the locking block 610, so that the locking block 610 can only move up and down relative to the fixed base 150.

[0051] The second elastic element 70 is a spring. One end of the second elastic element 70 is connected to the locking block 610, and the other end is connected to the fixing base 150.

[0052] See Figure 8 and Figure 9 The rear side wall of the locking block 610 is provided with a T-shaped limiting groove 640, and a T-shaped limiting block 153 is provided in the longitudinal sliding groove 151. The T-shaped limiting block 153 is movably inserted into the T-shaped limiting groove 640, and the locking block 610 is moved up and down relative to the T-shaped limiting block 153.

[0053] See Figure 2 and Figure 3 The first lens frame 110 has an anti-detachment protrusion 140 on its lower side, which can fit and limit the front surface of the second filter 20; a limiting track groove 100 is formed between the anti-detachment protrusion 140 and the fixing seat 150; the second filter 20 includes a second lens frame 210, the second lens frame 210 is provided with a second lens 220, the second lens frame 210 is provided with a rotation limiting block 230, the rotation limiting block 230 extends into the limiting track groove 100; when the second filter 20 rotates relative to the first filter 10, the rotation limiting block 230 moves within the limiting track groove 100.

[0054] The anti-detachment protrusion 140 and the locking block 610 can cooperate to restrain the second filter 20. When the locking block 610 is in the locked position, the two can cooperate to prevent the second filter 20 from moving forward, thus achieving locking. When the locking block 610 is in the unlocked position, to remove the second filter 20, you need to hold the second filter 20 and tilt it forward and upward.

[0055] Furthermore, a limiting track groove 100 is formed between the anti-detachment protrusion 140 and the fixed seat 150. The limiting track groove 100 and the rotation limiting block 230 can constrain the rotation angle of the second filter 20 relative to the first filter 10.

[0056] Furthermore, a circular mounting cavity 100 is provided in the first frame 110, and the second filter 20 is embedded in the circular mounting cavity 100, which can constrain the up-down and left-right movement of the second filter 20 and prevent it from shaking up-down or left-right during use.

[0057] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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 component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A combined filter structure, comprising a first filter (10) and a second filter (20) connected to each other, wherein the first filter (10) is rotatably connected to an adapter ring (50), characterized in that: The first filter (10) is provided with a locking component (40) for locking with the adapter ring (50), the locking component (40) constraining the first filter (10) to rotate relative to the adapter ring (50).

2. The combined filter structure according to claim 1, characterized in that: The rear end face of the second filter (20) is attached to the front end face of the first filter (10); The first filter (10) is provided with a locking assembly (30) that moves up and down relative to the first filter (10), and the locking assembly (30) is used to constrain the second filter (20) to move forward relative to the first filter (10).

3. The combined filter structure according to claim 1, characterized in that: The first filter (10) includes a first frame (110), and a first lens (120) is fixedly disposed on the first frame (110); A fixing seat (150) is provided on the first frame (110), the fixing seat (150) is provided with a locking channel (160), a communicating space (170) is provided between the fixing seat (150) and the first frame (110), the communicating space (170) and the locking channel (160) are interconnected, the adapter ring (50) is provided with a locking part (510), the locking part (510) extends through the communicating space (170) into the locking channel (160); the locking component (40) is moved up and down in the locking channel (160), the locking component (40) can abut and lock with the locking part (510) to constrain the adapter ring (50) to rotate relative to the first frame (110).

4. The combined filter structure according to claim 3, characterized in that: The locking assembly (40) includes a bolt (410) which is threadedly connected to the locking channel (160), and one end of the bolt (410) abuts against the locking part (510) for locking.

5. The combined filter structure according to claim 3, characterized in that: The locking assembly (40) includes a movable member (420) that is vertically movable within the locking channel (160). The lower end of the movable member (420) is provided with a first abutting part (440) that abuts against and locks the locking part (510). The upper end of the movable member (420) is provided with a pressing part (430). A first elastic element (60) is provided within the locking channel (160). The first elastic element (60) is used to apply force to the movable member (420) so that the first abutting part (440) abuts against and locks the locking part (510).

6. The combined filter structure according to claim 2, characterized in that: The first filter (10) includes a first frame (110), and a first lens (120) is fixedly disposed on the first frame (110); The first frame (110) is provided with a fixing seat (150), the front surface of the fixing seat (150) is provided with a longitudinal groove (151), and the locking assembly (30) includes a locking block (610) that is longitudinally slidably disposed in the longitudinal groove (151). The locking block (610) is connected to the fixing base (150) by a second elastic element (70), and the second elastic element (70) applies a force to the locking block (610) so that the locking block (610) fits and is limited to the front surface of the second filter (20); The fixed base (150) and the locking block (610) are provided with a movement limiting structure, which can limit the longitudinal movement of the locking block (610).

7. The combined filter structure according to claim 6, characterized in that: The movable limiting structure includes a limiting post (650) disposed in the longitudinal slide groove (151), and the locking block (610) is provided with a limiting groove (630). The limiting post (650) is movably inserted into the limiting groove (630).

8. A combined filter structure according to claim 6 or 7, characterized in that: The longitudinal slide groove (151) is provided with guide slide grooves (152) on the left and right sides respectively, and the locking block (610) is provided with sliders (620) that are movably inserted into the guide slide grooves (152) on the left and right sides respectively. The rear side wall of the locking block (610) is provided with a T-shaped limiting groove (640), and a T-shaped limiting block (153) is provided in the longitudinal sliding groove (151). The T-shaped limiting block (153) is movably inserted into the T-shaped limiting groove (640), and the locking block (610) is moved up and down relative to the T-shaped limiting block (153).

9. A combined filter structure according to claim 3, 6 or 7, characterized in that: The lower side of the first frame (110) is provided with an anti-detachment protrusion (140) that can fit and limit the front surface of the second filter (20); A limiting track groove (100) is formed between the anti-detachment protrusion (140) and the fixing seat (150); The second filter (20) includes a second frame (210), the second frame (210) is provided with a second lens (220), the second frame (210) is provided with a rotation limiting block (230), the rotation limiting block (230) extends into the limiting track groove (100); When the second filter (20) rotates relative to the first filter (10), the rotation limiting block (230) moves within the limiting trajectory groove (100).

10. A combined filter structure according to claim 4, characterized in that: The lower end of the bolt (410) is provided with a second abutment (411) that abuts and locks against the locking part (510).

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