Filter device

Abstract

The utility model relates to a filter device, which comprises a plurality of filters, the plurality of filters are stacked, each filter comprises a frame, a filter piece and a locking rod, the frame is provided with a first end part and a second end part which are oppositely arranged along the axial direction of the frame, and a light hole penetrating through the first end part and the second end part, the filter lens is fixed on the lens frame and located on a light transmitting path of the light transmitting hole, a locking hole is formed in the side wall of the second end part in a penetrating mode, in every two adjacent filters, the first end part of one filter is connected with the second end part of the other filter, and at least part of the locking rod extends into the locking hole and limits rotation of the two adjacent filters; the first end part can be directly separated from the second end part only by moving the locking rod towards the inner side far away from the light transmitting hole to relieve or reduce the abutting degree of the locking rod to the first end part, so that the two adjacent glasses frames can be detached and separated; the two adjacent mirror frames can be detached and separated without overcoming the clamping force of the clamping blocks in the clamping grooves, so that time and labor are saved, and detachment is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of filter brackets, in particular to a filter device. Background Art

[0002] The lens of the shooting device can be used with filters to achieve a good shooting effect, and in order to achieve a better shooting effect, multiple filters can be used in combination, but the multiple filters used in combination are not easy to disassemble and difficult to use. For example, CN203414660U discloses a multifunctional CPL polarized, adjustable ND filter, which discloses that the CPL polarizer is arranged in the rear frame, and the ND filter is connected to the second card slot of the rear frame through a card block to achieve fixation, and when disassembling, the user needs to drive the ND filter to overcome the card relay between the card block and the second card slot to achieve disassembly, which is time-consuming and labor-intensive, and inconvenient to disassemble. Utility Model Content

[0003] The utility model provides a filter device to solve the problem that when a plurality of filters are combined for use, the plurality of combined filters are difficult to disassemble, resulting in difficulty in use.

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

[0005] A filter device, comprising a plurality of filters, the plurality of filters are stacked, each of the filters comprising a frame, a filter sheet and a locking rod, the frame having a first end and a second end oppositely arranged along its axial direction, the frame having a light-transmitting hole penetrating the first end and the second end, the filter sheet being fixed to the frame and located on the light-transmitting path of the light-transmitting hole;

[0006] A locking hole is provided through the side wall of the second end. Among the two adjacent filters, the first end of one filter is connected to the second end of the other filter. The locking rod at least partially extends into the locking hole and restricts the rotation of the two adjacent filters.

[0007] In one of the embodiments, the second end is provided with a mounting hole, the mounting hole is connected to the light-transmitting hole and the locking hole, the radial dimension of the mounting hole is larger than the radial dimension of the light-transmitting hole, and the first end is adapted to the mounting hole.

[0008] In one embodiment, the first end is provided with a clamping block, and the clamping block is received in the mounting hole.

[0009] In one embodiment, the first end and the second end are both arranged in a sleeve structure, the outer diameter of the first end is smaller than the inner diameter of the second end, and the inner diameter of the first end forms the light-transmitting hole.

[0010] In one embodiment, the sleeve structure is in the shape of a circumferentially continuous ring, the outer diameter of the sleeve structure is smaller than the inner diameter of the mounting hole, the sleeve structure is penetrated by the light-transmitting hole in the axial direction, and the locking rod moves relative to the lens frame and abuts against the sleeve structure to limit the sleeve structure from detaching from the mounting hole along the axial direction.

[0011] In one of the embodiments, a mounting block is protruded on the outer side wall of the second end portion, and the locking hole passes through the mounting block. When the locking rod reduces or releases the abutment against the first end portion, the mounting block is pushed, so that the mounting block drives the frame to move around the axial direction, and the first end portion rotates around the axial direction in the mounting hole.

[0012] In one embodiment, a threaded hole is provided at the second end, the length direction of the threaded hole is parallel to the radial direction of the light-transmitting hole and is connected to the light-transmitting hole, the locking rod is a screw, the screw is threadedly connected to the threaded hole, and the screw can move toward the inside of the light-transmitting hole to abut against the first end of the frame in the other filter.

[0013] In one embodiment, the filter further includes an elastic member, two ends of which are respectively connected to the second end and an end of the locking rod away from the locking hole, and the elastic member drives the locking rod to abut against the first end of the other frame.

[0014] In one embodiment, the filter includes a magnetic member, which is disposed at the first end. When the first end of one of two adjacent frames is snapped to the second end of the other, the magnetic member in one frame is magnetically attracted to the other frame to restrict the first end to the second end along the axial direction.

[0015] In one embodiment, the magnetic members are multiple in number and are circumferentially spaced and arranged at the first end.

[0016] It can be seen from the above technical solutions that the embodiments of the utility model have at least the following advantages and positive effects:

[0017] The utility model provides a filter device. Since two adjacent frames are fixed by abutting against a locking rod, when the two adjacent frames need to be disassembled, it is only necessary to move the locking rod toward the inner side away from the light transmission hole, and release or reduce the abutment degree of the locking rod against the first end portion, so that the first end portion of one of the two adjacent frames can be directly separated from the second end portion of the other, so as to realize the disassembly and separation of the two adjacent frames. Unlike a traditional filter device, it is not necessary to overcome the clamping force of a clamping block in a clamping groove to realize the disassembly and separation of the two adjacent frames, thereby saving time and effort and facilitating disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of a filter device in one embodiment of the utility model;

[0020] Figure 2 for Figure 1 An exploded structural schematic diagram of the filter device shown;

[0021] Figure 3 for Figure 2 Schematic diagram of the exploded structure of the filter shown;

[0022] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure of the mirror frame shown;

[0023] Figure 5 for Figure 3 Schematic diagram of the overall structure of the frame shown.

[0024] The following are the descriptions of the reference numerals:

[0025] 1. Filter device;

[0026] 10. Filters;

[0027] 101. Mirror frame; 102. Filter sheet; 103. Locking rod; 104. First end; 105. Second end; 106. Light-transmitting hole; 107. Locking hole; 108. Mounting hole; 109. Snap-fit ​​block; 110. Bushing structure; 111. Mounting block; 112. Threaded hole; 113. Screw; 114. Snap-fit ​​groove; 115. Elastic member; 116. Magnetic member. DETAILED DESCRIPTION

[0028] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] refer to Figure 1 The utility model provides a filter device 1, which can be installed on a lens module of a shooting device. The filter device 1 can be used to filter natural light so that the lens module has a better imaging effect, thereby achieving a better shooting effect. The shooting device can be, but is not limited to, a camera, a video camera, a smart phone, and other devices.

[0032] refer to Figure 1 and Figure 2 The filter device 1 includes at least two filters 10 connected end to end along the axial direction and detachably spliced. The two mutually spliced ​​filters 10 can also be installed on the lens module of the shooting device, and at least two filters 10 can achieve a better filtering effect to achieve a better shooting effect. It can be understood that in other embodiments, the number of filters 10 can also be multiple, and multiple filters 10 are stacked and detachably connected. In this case, the number of filters 10 is at least three, or the number of filters 10 can also be set according to the actual needs of the user.

[0033] It should be noted that in this embodiment, the structures of the multiple filters 10 are the same, which can reduce the processing steps, improve production efficiency, and easily replace the same parts after they are damaged, and have good interchangeability. It is understandable that in other embodiments, the structures of the multiple filters 10 may also be different.

[0034] refer to Figure 3The filter 10 includes a frame 101, a filter sheet 102 and a locking rod 103. The frame 101 has a first end 104 and a second end 105 that are arranged opposite to each other along its axial direction and a light-transmitting hole 106 that passes through the first end 104 and the second end 105. In two adjacent frames 101, the first end 104 of one is mounted on the second end 105 of the other to achieve splicing connection of two adjacent filters 10. At this time, the second end 105 of the other of the two adjacent frames 101 is clamped on the lens module to achieve installation and fixation of the filter 10 on the lens module. The filter sheet 102 is fixed to the frame 101 and is located on the light-transmitting path of the light-transmitting hole 106. When natural light passes through the light-transmitting hole 106 and projects onto the lens module, the filter sheet 102 can filter the natural light to achieve a better shooting effect. The locking rod 103 can move radially toward the light-transmitting hole 106 to abut against the first end 104 of the frame 101 in another filter 10, so as to limit the rotation of two adjacent frames 101 and limit the axial disassembly and separation of two adjacent frames 101 from each other, thereby limiting the rotation of two adjacent filters 10 and limiting the axial disassembly and separation of two adjacent filters 10 from each other.

[0035] refer to Figure 4 A locking hole 107 is provided on the side wall of the second end 105. Among two adjacent filters 10, the first end 104 of one filter 10 is connected to the second end 105 of the other filter 10. The locking rod 103 at least partially extends into the locking hole 107 and restricts the rotation of the two adjacent filters 10.

[0036] It should be noted that the arrangement and appearance structure of the frame 101, filter sheet 102 and locking rod 103 of two adjacent filters 10 are the same, which can reduce the processing steps, improve production efficiency, facilitate mass production, and make it easy to replace the same parts after they are damaged, so as to achieve good interchangeability. It is understandable that in other embodiments, the arrangement and appearance structure of the frame 101, filter sheet 102 and locking rod 103 of two adjacent filters 10 may be different.

[0037] It should be noted that in other embodiments, in the same filter 10, the number of locking rods 103 may also be multiple, and the multiple locking rods 103 are circumferentially arranged at the second end 105. When the adjacent first end 104 is installed on the adjacent second end 105, the multiple locking rods 103 are all in contact with the first end 104, and the first end 104 is more firmly restricted. It can be understood that the number of locking rods 103 can also be set accordingly according to actual use needs.

[0038] Figure 3 As shown, the frame 101 is cylindrical, which is convenient for users to hold and drive two adjacent frames 101 to rotate relative to each other around the axis. It can be understood that in other embodiments, the appearance structures of two adjacent frames 101 may be different.

[0039] To summarize, in the present application, since two adjacent frames 101 are fixed by abutting against each other via the locking rod 103, when the two adjacent frames 101 need to be disassembled, it is only necessary to move the locking rod 103 in a direction away from the inner side of the light-transmitting hole 106, and release or reduce the abutment degree of the locking rod 103 against the first end 104, so that the first end 104 of one of the two adjacent frames 101 can be directly separated from the second end 105 of the other, so as to realize the disassembly and separation of the two adjacent frames 101, without having to overcome the clamping force of the clamping block in the clamping slot to realize the disassembly and separation of the two adjacent frames 101 as in the traditional filter device 1, thereby saving time and effort and facilitating disassembly.

[0040] Continue to refer Figure 4 The second end 105 is provided with a mounting hole 108, which is connected to the light-transmitting hole 106 and the locking hole 107. The radial direction of the mounting hole 108 is parallel to the length direction of the locking hole 107. The radial dimension of the mounting hole 108 is larger than the radial dimension of the light-transmitting hole 106. The first end 104 is adapted to the mounting hole 108. At the same time, the first end 104 is provided with a clamping block 109, which protrudes from the first end 104 and is a circumferentially continuous annular body. The radial dimension of the clamping block 109 is smaller than the radial dimension of the frame 101, and the clamping block 109 is penetrated by the light-transmitting hole 106 in the axial direction. In two adjacent frames 101, the clamping block 109 of one accommodates the mounting hole 108 of the other. At this time, the locking rod 103 is tightened, and the locking rod 103 moves relative to the frame 101 and abuts against the clamping block 109 to limit the clamping block 109 from axially disengaging from the mounting hole 108, thereby achieving the splicing and fixation of the two adjacent frames 101.

[0041] It should be noted that, in other embodiments, there are multiple clamping blocks 109 , and the multiple clamping blocks 109 are arranged at intervals along the circumference of the frame 101 to form a ring.

[0042] At the same time, the locking rod 103 can be loosened, and the locking rod 103 moves in the opposite direction to reduce or release the abutment against the clamping block 109, so that the frame 101 can drive the clamping block 109 to rotate axially in the mounting hole 108, so as to drive the filter sheet 102 to rotate, and then adjust the reflectivity and transmittance of the filter sheet 102 for user convenience. At this time, the user can also use the frame 101 to drive the clamping block 109 to disengage from the mounting hole 108, so that two adjacent frames 101 can be disassembled and separated from each other.

[0043] It should be noted that when the second end portion 105 is installed on the lens module, the lens module is received in the mounting hole 108. At this time, the locking rod 103 is tightened, and the locking rod 103 moves relative to the lens frame 101 along the radial direction of the mounting hole 108 to abut against the lens module, thereby fixing the lens module to the second end portion 105. At the same time, the above steps can be reversed to remove the lens module.

[0044] refer to Figure 3 The first end 104 and the second end 105 are both arranged in a sleeve structure 110 , the outer diameter of the first end 104 is smaller than the inner diameter of the second end 105 , and the inner diameter of the first end 104 forms a light-transmitting hole 106 .

[0045] It should be noted that the sleeve structure 110 is in a circumferentially continuous ring shape, the outer diameter of the sleeve structure 110 is smaller than the inner diameter of the mounting hole 108, the sleeve structure 110 is axially penetrated by the light-transmitting hole 106, and the locking rod 103 moves relative to the lens frame 101 and abuts against the sleeve structure 110 to limit the sleeve structure 110 from axially separating from the mounting hole 108. The locking rod 103 can also move in the reverse direction to reduce or release the abutment degree with the clamping block 109, so that the lens frame 101 can drive the clamping block 109 to rotate in the mounting hole 108 around the axial direction, so as to drive the filter sheet 102 to rotate, thereby adjusting the reflectivity and transmittance of the filter sheet 102.

[0046] refer to Figure 5 A mounting block 111 is convexly provided on the outer side wall of the second end portion 105, and the locking hole 107 passes through the mounting block 111. When the locking rod 103 reduces or releases the abutment degree with the clamping block 109, the mounting block 111 is pushed, so that the mounting block 111 drives the frame 101 to rotate around the axis, and the clamping block 109 rotates around the axis in the mounting hole 108, so that two adjacent frames 101 rotate relative to each other. Since the mounting block 111 is provided, the user's hand has a force point to drive the frame 101 to rotate, which is convenient for the user to operate. It can be understood that in other embodiments, the mounting block 111 can be omitted, and the user can just hold the outer contour of the frame 101.

[0047] refer to Figure 4 and Figure 5 The second end portion 105 is provided with a threaded hole 112, the length direction of the threaded hole 112 is parallel to the radial direction of the light transmission hole 106 and is connected to the light transmission hole 106, the locking rod 103 is a screw 113, the screw 113 is threadedly connected to the threaded hole 112, the screw 113 can move toward the inner side of the light transmission hole 106 to abut against the first end portion 104 of the frame 101 in another filter 10, thereby limiting the first end portion 104 from axially separating from the second end portion 105 and limiting the first end portion 104 from axially rotating in the second end portion 105.

[0048] It should be noted that the moving direction of the screw rod 113 is perpendicular to the disassembly direction of the first end portion 104 . It is understandable that in other embodiments, the moving direction of the screw rod 113 may also be inclined to the disassembly direction of the first end portion 104 .

[0049] It should be noted that the threaded hole 112 here is a specific implementation of the locking hole 107 .

[0050] Continue to refer Figure 4 The hole wall of the light-transmitting hole 106 is provided with a snap-in groove 114, which is continuous in the circumferential direction around the center line of the light-transmitting hole 106 to form a closed ring. The edge of the filter sheet 102 is received in the snap-in groove 114 to limit the filter sheet 102 from being separated from the light-transmitting hole 106 along the center line direction of the light-transmitting hole 106, thereby achieving the position fixation of the filter sheet 102.

[0051] refer to Figure 4 and Figure 5 , the filter 10 includes an elastic member 115, the opposite ends of which are respectively connected to the second end 105 and the end of the locking rod 103 away from the locking hole 107, and the elastic member 115 drives the locking rod 103 to abut against the first end 104 of the other lens frame 101. The elastic member 115 is continuous in the circumferential direction around the center line of the light-transmitting hole 106 to form a closed annular body, and the elastic member 115 forms the aforementioned clamping groove 114 between the step surface between the mounting hole 108 and the light-transmitting hole 106 in the direction of the center line of the light-transmitting hole 106. When the edge of the filter sheet 102 is received in the clamping groove 114, the filter sheet 102 can squeeze the elastic member 115 under the action of external force to make the elastic member 115 elastically deformed, so that the filter sheet 102 can be separated from the clamping groove 114 toward the side where the mounting hole 108 is located. It can be understood that in other embodiments, the elastic member 115 may not be provided.

[0052] Continue to refer Figure 3 The filter 10 includes a magnetic member 116, which is disposed at the first end 104. When the first end 104 of one of the two adjacent frames 101 is clamped to the second end 105 of the other, the magnetic member 116 in one frame 101 is magnetically attracted to the other frame 101 to limit the first end 104 axially to the second end 105, so that the connection between the two adjacent frames 101 is more secure. The magnetic member 116 is disposed on the clamping block 109.

[0053] It should be noted that, in the present embodiment, the frame 101 is made of a magnetically absorbable material, and when the first end 104 of one of the two adjacent frames 101 is snapped onto the second end 105 of the other, the magnetic member 116 can be magnetically absorbed by the other frame 101. It is understandable that in other embodiments, the frame 101 is made of a non-magnetically absorbable material, and in this case, the second end 105 of the frame 101 is provided with a magnetic member 116, and when the adjacent first end 104 is snapped onto the second end 105, the two magnetic members 116 are magnetically fixed to each other to limit the first end 104 from being separated from the second end 105. Alternatively, in other embodiments, the magnetic member 116 can be omitted, and in this case, the first end 104 can be limited to the second end 105 by the locking rod 103.

[0054] It should be noted that there are multiple magnetic members 116 which are circumferentially spaced apart at the first end 104 . The multiple magnetic members 116 can more firmly fix the first end 104 to the second end 105 by magnetic attraction, thereby making the connection between two adjacent frames 101 more firmly.

[0055] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A filter device, comprising a plurality of filters, wherein the plurality of filters are stacked and arranged, characterized in that: Each of the filters comprises a frame, a filter sheet and a locking rod, the frame having a first end and a second end oppositely arranged along its axial direction, the frame being provided with a light-transmitting hole penetrating the first end and the second end, the filter sheet being fixed to the frame and located on the light-transmitting path of the light-transmitting hole; A locking hole is provided through the side wall of the second end. Among the two adjacent filters, the first end of one filter is connected to the second end of the other filter. The locking rod at least partially extends into the locking hole and restricts the rotation of the two adjacent filters.

2. The filter device according to claim 1, characterized in that: The second end is provided with a mounting hole, the mounting hole is connected to the light-transmitting hole and the locking hole, the radial dimension of the mounting hole is larger than the radial dimension of the light-transmitting hole, and the first end is adapted to the mounting hole.

3. The filter device according to claim 2, characterized in that: The first end portion is provided with a clamping block, and the clamping block is received in the mounting hole.

4. The filter device according to claim 2, characterized in that: The first end and the second end are both arranged in a shaft sleeve structure, the outer diameter of the first end is smaller than the inner diameter of the second end, and the inner diameter of the first end forms the light-transmitting hole.

5. The filter device according to claim 4, characterized in that: The sleeve structure is in the shape of a circumferentially continuous ring, the outer diameter of the sleeve structure is smaller than the inner diameter of the mounting hole, the sleeve structure is penetrated by the light-transmitting hole in the axial direction, and the locking rod moves relative to the lens frame and abuts against the sleeve structure to limit the sleeve structure from detaching from the mounting hole along the axial direction.

6. The filter device according to claim 2, characterized in that: A mounting block is protruded on the outer wall of the second end portion, and the locking hole passes through the mounting block. When the locking rod reduces or releases the abutment against the first end portion, the mounting block is pushed, so that the mounting block drives the frame to move around the axial direction, and the first end portion rotates around the axial direction in the mounting hole.

7. The filter device according to claim 1, characterized in that: The second end is provided with a threaded hole, the length direction of which is parallel to the radial direction of the light-transmitting hole and is connected to the light-transmitting hole. The locking rod is a screw, which is threadedly connected to the threaded hole. The screw can move toward the inner side of the light-transmitting hole to abut against the first end of the frame in the other filter.

8. The filter device according to claim 1, characterized in that: The filter also includes an elastic member, two ends of which are respectively connected to the second end and an end of the locking rod away from the locking hole, and the elastic member drives the locking rod to abut against the first end of the other frame.

9. The filter device according to any one of claims 1 to 8, characterized in that: The filter includes a magnetic component, which is arranged at the first end. When the first end of one of two adjacent frames is clamped to the second end of the other, the magnetic component in one frame is magnetically attracted to the other frame to restrict the first end to the second end along the axial direction.

10. The filter device according to claim 9, characterized in that: The number of the magnetic members is plural and they are circumferentially spaced and arranged at the first end.

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