Anti-extrusion optical filter clamping structure

Abstract

The utility model discloses an anti-extrusion optical filter clamping structure, which relates to the technical field of optical filters, and comprises a shell, a transverse slot is arranged in the shell, the transverse slot is I-shaped, an insertion block is inserted in the transverse slot, two buckle bumps are arranged on one side of the insertion block in a mirroring manner, and a connecting assembly corresponding to the buckle bumps is arranged on the other side of the insertion block. A through hole is formed in the middle of the inserting block, a mounting ring table is arranged at one end of the through hole, and an optical filter assembly is mounted on the mounting ring table; according to the utility model, through the cooperation of the plug-in seat, the plug-in column and the damping spring in the optical filter assembly, buffer is provided for the filter lens when equipment vibrates, the protection effect on the filter lens is improved, and the filter lens can be prevented from being damaged due to vibration and extrusion; finally, the problems that according to an existing slot type optical filter clamping structure, the optical filter is prone to being damaged, and the insertion block is inconvenient to connect are solved, and the use stability of the optical filter, the connection convenience of the insertion block and the overall use effect are improved.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a filter snap-fit ​​structure that prevents crushing. Background Technology

[0002] In the field of optical equipment, filters are widely used, from photographic equipment to medical testing equipment, from security monitoring to scientific research instruments. Filters play a vital role because they can selectively transmit light of specific wavelengths, thereby meeting the light requirements of different optical systems.

[0003] Existing traditional filter snap-fit ​​structures are mostly slot-type designs, where the filter is directly inserted into a slot in the housing for fixation. This slot-type structure lacks an effective buffering and positioning mechanism, making the filter prone to movement within the slot. When the equipment is subjected to vibration, such as the shaking of photographic equipment during shooting or the vibration of security monitoring equipment caused by wind, the filter will frequently collide and be squeezed against the inner wall of the slot. Over time, the edges of the filter are easily damaged, and the internal optical coating may also peel off due to uneven stress, leading to a significant decrease in the filter's optical performance. This results in the inability to accurately filter light of specific wavelengths, affecting the imaging quality or detection accuracy of the equipment. Therefore, improvements are needed to address these issues. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pressure-resistant filter snap-fit ​​structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pressure-resistant filter snap-fit ​​structure, comprising a housing, wherein a horizontal slot is provided inside the housing, the horizontal slot is I-shaped, a plug-in block is inserted into the horizontal slot, two snap-fit ​​protrusions are mirror-image provided on one side of the plug-in block, a connecting component corresponding to the snap-fit ​​protrusions is provided on the other side of the plug-in block, a through hole is provided in the middle of the plug-in block, a mounting ring is provided at one end of the through hole, and a filter assembly is mounted on the mounting ring.

[0006] Preferably, the filter assembly includes a pressure ring, a filter element, and a washer. Multiple insertion seats are arranged in a ring between the mounting ring and the opposite surfaces of the washer. The washer has insertion posts corresponding to the insertion seats. Each insertion seat is fitted with a damping spring. The filter element is in contact with the washer. Multiple L-shaped slots are clockwise formed on the inner wall of the through hole. Multiple rectangular protrusions corresponding to the L-shaped slots are formed on the outer wall of the pressure ring. The pressure ring rotates through the L-shaped slots to abut against the filter element.

[0007] Preferably, the connecting component includes two mirror-shaped snap-fit ​​grooves, with an installation groove at the end of each snap-fit ​​groove, and a pressure plate inside the installation groove.

[0008] Preferably, a pressing block is fixedly connected to the middle of the pressure plate, one end of the pressing block penetrates the outer wall of the outer shell, and the other end of the pressing block abuts against the buckle protrusion inserted into the buckle groove.

[0009] Preferably, multiple lifting springs are symmetrically arranged at both ends of the bottom surface of the pressure plate, and a sleeve for fitting the lifting spring is provided at the mounting groove where the lifting spring is located.

[0010] Preferably, a threaded hole is coaxially provided between the top end of the outer shell and the plug-in block.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the cooperation of the plug-in seat, plug-in post, and damping shock-absorbing spring in the filter assembly, facilitates buffering of the filter lens during equipment vibration, improving the protection effect of the filter lens. This prevents the filter lens from being damaged by vibration and pressure, and the optical coating from peeling off. Furthermore, through the cooperation of the pressure plate, pressing block, and lifting spring in the connecting assembly, during installation, the snap-fit ​​protrusion is inserted into the snap-fit ​​groove, and the snap-fit ​​protrusion engages in the snap-fit ​​groove, achieving a stable connection between multiple plug-in blocks with filters installed. During disassembly, pressing the pressing block releases the connection, improving the convenience of connecting and separating the plug-in blocks. This enables flexible assembly and disassembly of multiple plug-in blocks with filters, ultimately solving the problems of easy filter damage and inconvenient plug-in block connection caused by existing slot-type filter snap-fit ​​structures. This improves the stability of filter use, the convenience of plug-in block connection, and the overall performance. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a first-view schematic diagram of the overall structure proposed in this utility model;

[0014] Figure 2 This is a first-view schematic diagram of the overall structure of the plug-in block proposed in this utility model;

[0015] Figure 3 This is a first-view schematic diagram of the overall cross-sectional structure of the plug-in block proposed in this utility model.

[0016] Figure 4 This is a second-view schematic diagram of the overall cross-sectional structure of the plug-in block proposed in this utility model;

[0017] Figure 5 This is a schematic cross-sectional view of the buckle groove proposed in this utility model.

[0018] The numbers in the diagram are: 1. Outer shell; 2. Insertion block; 3. Filter assembly; 4. Threaded hole; 5. Snap-on groove; 6. Snap-on protrusion; 7. Pressing block; 8. Pressure ring; 9. Filter lens; 10. Washer; 11. Damping shock absorber spring; 12. Mounting groove; 13. Pressure plate; 14. Lifting spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Example: See Figure 1-5This utility model discloses an anti-squeezing filter snap-fit ​​structure, comprising a housing 1, with a transverse slot inside the housing 1, the transverse slot being I-shaped, and a plug-in block 2 inserted into the transverse slot. Two snap-fit ​​protrusions 6 are mirror-imagely arranged on one side of the plug-in block 2, and a corresponding connecting component is provided on the other side of the plug-in block 2. A through hole is opened in the middle of the plug-in block 2, and a mounting ring is provided at one end of the through hole, on which a filter assembly 3 is mounted. Both the housing 1 and the plug-in block 2 are made of high-strength plastic material, such as polycarbonate (PC). Polycarbonate has good impact resistance, rigidity, and insulation, and is lightweight. The housing 1 can effectively resist external impacts, providing a better internal... The substructure provides reliable protection. The I-shaped horizontal slot fits tightly with the plastic plug-in block 2, ensuring stable positioning and preventing wobbling after insertion. The snap-fit ​​protrusion 6 and connecting components facilitate connection with other parts, providing a stable mounting foundation for the filter assembly 3 and significantly improving the stability and reliability of filter installation while reducing the overall structural weight. The filter assembly 3 includes a pressure ring 8, a filter element 9, and a washer 10. Multiple plug-in seats are arranged in a ring between the mounting ring and the opposite surfaces of the washer 10. The washer 10 has plug-in posts corresponding to the plug-in seats. Each plug-in seat is fitted with a damping spring 11. The filter element 9 and the washer 10... The pressure ring 8 and filter lens 9 are fitted together. Multiple L-shaped slots are clockwise formed on the inner wall of the through-hole, and multiple rectangular protrusions corresponding to the L-shaped slots are formed on the outer wall of the pressure ring 8. The pressure ring 8 rotates through the L-shaped slots to abut against the filter lens 9. The pressure ring 8 is made of stainless steel, which is high in hardness and corrosion-resistant. The filter lens 9 is made of optical glass, ensuring excellent optical performance. The gasket 10 is made of rubber, providing sealing and cushioning functions. The plug and plug post cooperate with each other, and the damping spring 11 is made of high-quality spring steel, which is elastic and durable. When the equipment vibrates, the damping spring 11 effectively cushions the vibration, preventing the filter lens 9 from being damaged by compression or the coating from peeling off. Simultaneously, the pressure ring 8 utilizes the L-shaped slots to abut against the filter lens 9. The shaped slot rotates and abuts against the filter lens 9, facilitating the installation and fixation of the filter lens 9 and improving the stability and optical performance of the filter lens 9. The connecting component includes two mirror-shaped snap-fit ​​slots 5, with an installation groove 12 at the end of each snap-fit ​​slot 5, and a pressure plate 13 inside the installation groove 12. The snap-fit ​​slots 5 are formed on the plastic plug block 2. The plastic material has good plasticity, which can ensure the processing accuracy of the snap-fit ​​slots 5 and has a low cost. The pressure plate 13 inside the installation groove 12 is made of carbon steel, which has high strength. The cooperation between the snap-fit ​​slots 5 and the pressure plate 13 lays the structural foundation for the subsequent connection with the snap-fit ​​protrusion 6, which facilitates the connection of multiple components and improves the convenience of component connection.

[0021] In this utility model, a pressing block 7 is fixedly connected to the middle of the pressure plate 13. One end of the pressing block 7 penetrates the outer wall of the outer shell 1, and the other end of the pressing block 7 abuts against the snap-fit ​​protrusion 6 inserted into the snap-fit ​​groove 5. The pressing block 7 is made of engineering plastic material, which has good wear resistance and self-lubricating properties. By pressing the pressing block 7, the contact and separation between the pressure plate 13 and the snap-fit ​​protrusion 6 can be easily controlled, realizing the connection and disassembly of the components. The operation is simple and greatly improves the efficiency of component connection and disassembly. Multiple lifting springs 14 are symmetrically arranged at both ends of the bottom surface of the pressure plate 13. The mounting groove 12 is provided with a sleeve for fitting the lifting spring 14 at the lifting spring 14. The lifting spring 14 is made of engineering plastic material. The high-elasticity alloy steel material provides stable elastic force, while the sleeve is made of plastic, matching the material of the overall outer shell 1 and the plug-in block 2. The plastic sleeve is lightweight and has a certain degree of toughness, which can prevent the lifting spring 14 from shifting. The lifting spring 14 allows the pressing block 7 to automatically rebound after being released, ensuring that the pressure plate 13 stably abuts against the snap-fit ​​protrusion 6 and enhancing the stability of the component connection. A threaded hole 4 is coaxially provided between the top of the outer shell 1 and the plug-in block 2. The threaded hole 4 facilitates the use of stainless steel bolts and other connecting parts to further fix the outer shell 1 and the plug-in block 2. The stainless steel bolt connection is firm and can improve the stability and integrity of the entire snap-fit ​​structure.

[0022] Working principle: When using this utility model, first, the filter lens 9 is attached to the washer 10, so that the plug on the washer 10 is connected to the plug seat on the mounting ring. The damping spring 11 sleeved on the plug seat then enters the pre-compression state to prepare for subsequent vibration buffering. Next, the rectangular protrusion of the pressure ring 8 is aligned with the specific slot, and the pressure ring 8 is rotated to make it abut against the filter lens 9, completing the installation of the filter assembly 3 on the plug block 2. During assembly, since the slot inside the outer shell 1 and the plug block 2 are both made of plastic, the plug block 2 is inserted into the slot. The two fit tightly and the friction is appropriate, ensuring the stable positioning of the plug block 2. If multiple plug blocks 2 need to be connected, the snap-fit ​​protrusion 6 of one plug block 2 is aligned with the snap-fit ​​groove 5 of another plug block 2 and then inserted. During the insertion process, the snap-fit ​​protrusion 6 squeezes the pressure plate 13 to move it. The lifting springs 14 at both ends of the bottom surface of the pressure plate 13 maintain the initial position of the pressure plate 13, helping it to approach the end of the snap-fit ​​groove 5 under normal conditions. After the snap-fit ​​protrusion 6 is fully inserted, the pressure plate 13, relying on its own structure and the limiting position of the mounting groove 12, holds the snap-fit ​​protrusion 6, achieving a stable connection of multiple plug-in blocks 2. If vibration occurs during equipment use, the filter assembly 3 receives the vibration, and the damping spring 11 plays a buffering role, preventing the filter lens 9 from colliding hard with other components, preventing the filter lens 9 from being damaged by squeezing or the coating from peeling off, and maintaining its good optical performance. When disassembling the filter, press the pressing block 7 to move the pressure plate 13, allowing the pressure plate 13 to separate from the snap-fit ​​protrusion 6, so that the plug-in block 2 can be easily removed, or multiple connected plug-in blocks 2 can be separated. Then, rotate the pressure ring 8 in the opposite direction to disengage its rectangular protrusion from the slot, and the filter assembly 3 can be removed. To further enhance the connection stability, stainless steel bolts can be screwed in through the threaded hole 4 between the outer shell 1 and the plug-in block 2 to ensure the stability and reliability of the snap-fit ​​structure throughout the installation, use, and disassembly process. At this point, the device is in use.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pressure-resistant filter snap-fit ​​structure, comprising a housing (1), characterized in that: The outer casing (1) has a horizontal slot, which is I-shaped. A plug-in block (2) is inserted into the horizontal slot. Two snap-fit ​​protrusions (6) are mirrored on one side of the plug-in block (2). A connecting component corresponding to the snap-fit ​​protrusions (6) is provided on the other side of the plug-in block (2). A through hole is opened in the middle of the plug-in block (2). A mounting ring is provided on one end of the through hole. A filter assembly (3) is installed on the mounting ring.

2. The anti-extrusion filter snap-fit ​​structure according to claim 1, characterized in that: The filter assembly (3) includes a pressure ring (8), a filter lens (9), and a washer (10). Multiple insertion seats are arranged in a ring between the mounting ring platform and the opposite face of the washer (10). The washer (10) is provided with insertion posts corresponding to the insertion seats. Each insertion seat is fitted with a damping spring (11). The filter lens (9) is in contact with the washer (10). Multiple L-shaped slots are provided clockwise on the inner wall of the through hole. Multiple rectangular protrusions corresponding to the L-shaped slots are provided on the outer wall of the pressure ring (8). The pressure ring (8) rotates through the L-shaped slots to abut against the filter lens (9).

3. The anti-extrusion filter snap-fit ​​structure according to claim 2, characterized in that: The connecting component includes two mirror-shaped snap-fit ​​slots (5), and an installation slot (12) is provided at the end of the snap-fit ​​slot (5). A pressure plate (13) is provided in the installation slot (12).

4. The anti-extrusion filter snap-fit ​​structure according to claim 3, characterized in that: A pressing block (7) is fixedly connected to the middle of the pressure plate (13). One end of the pressing block (7) penetrates the outer wall of the outer shell (1), and the other end of the pressing block (7) abuts against the buckle protrusion (6) inserted into the buckle groove (5).

5. The anti-extrusion filter snap-fit ​​structure according to claim 4, characterized in that: The bottom surface of the pressure plate (13) is symmetrically provided with multiple lifting springs (14) at both ends, and the mounting groove (12) is provided with a sleeve for connecting the lifting springs (14) at the lifting springs (14).

6. The anti-extrusion filter snap-fit ​​structure according to claim 5, characterized in that: A threaded hole (4) is coaxially provided between the top of the outer shell (1) and the plug block (2).

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