Thread structure of an optical lens

Abstract

The utility model discloses a kind of thread structures of optical lens, including back seat and lens barrel, back seat is equipped with rectangular internal thread;Lens barrel is equipped with trapezoidal external thread matched with rectangular internal thread;Two corner parts of the crest of rectangular internal thread are in contact with the side of trapezoidal external thread;By adopting the cooperation of rectangular internal thread and trapezoidal external thread, and design the crest corner part of rectangular internal thread is in contact with the side of trapezoidal external thread, the close cooperation of thread and uniform stress are realized.This structure not only enhances the stability of threaded connection, but also makes wear mainly concentrate in the crest corner part of rectangular internal thread, facilitate control and predict wear site, reduce the risk of optical lens imaging quality decline caused by thread loosening.In addition, the matching mode can form stable friction in the assembly process, which helps to realize more accurate torque control, further improves the precision and reliability of optical lens assembly.

Description

Technical Field

[0001] This utility model relates to the field of optical lens technology, and in particular to a threaded structure for an optical lens. Background Technology

[0002] In the manufacturing of optical lenses, the connection between the lens barrel and the mounting base typically uses a standard threaded connection. However, this traditional threaded connection method has several problems. First, when two sets of identical threads are paired, the gap between the threads is difficult to control precisely, leading to loosening during mass production and affecting the lens's image quality and stability. Second, because torque is difficult to adjust effectively, manual application of adhesive is usually required to improve torque, which not only increases production costs but may also lead to a higher rate of product returns. Furthermore, the locking effect of traditional threaded connections is not ideal, and wobbling is prone to occur, thus affecting the image quality of the optical lens. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a threaded structure for an optical lens to solve the problems of loose threads, difficulty in controlling torque, and poor locking effect in the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a threaded structure for an optical lens, comprising...

[0005] The rear seat is equipped with a rectangular internal thread;

[0006] The lens barrel is provided with a trapezoidal external thread that mates with the rectangular internal thread;

[0007] The two corners of the tooth tip of the rectangular internal thread abut against the side of the trapezoidal external thread.

[0008] Furthermore, both the rectangular internal thread and the trapezoidal external thread are multi-start threads.

[0009] Furthermore, the rear seat is provided with an internal thread assembly, and the rectangular internal thread is provided on the internal thread assembly.

[0010] Furthermore, the internal threaded assembly is detachably mounted on the rear seat.

[0011] Furthermore, it also includes a first fastener, wherein the outer side wall of the rear seat is provided with a first mounting hole, the first fastener passes through the first mounting hole and is connected to the internal threaded sleeve.

[0012] Furthermore, the outer side wall of the rear seat is also provided with a first sliding groove, the first mounting hole is provided in the first sliding groove, and a slidable first blocking member is provided in the first sliding groove, the first blocking member being used to block the first mounting hole.

[0013] Furthermore, the lens barrel is provided with an external threaded sleeve, and the trapezoidal external thread is provided on the external threaded sleeve.

[0014] Furthermore, the external threaded assembly is detachably mounted on the lens barrel.

[0015] Furthermore, it also includes a second fastener, wherein the outer side wall of the external threaded kit is provided with a second mounting hole, the second fastener passes through the second mounting hole and is connected to the lens barrel.

[0016] Furthermore, the outer side wall of the external threaded assembly is provided with a second sliding groove, the second mounting hole is provided in the second sliding groove, and a slidable second blocking member is provided in the second sliding groove, the second blocking member being used to block the second mounting hole.

[0017] The beneficial effects of this invention are as follows: The threaded structure of the optical lens provided by this invention achieves a tight fit and uniform force distribution by using a rectangular internal thread and a trapezoidal external thread, with the tooth tip of the rectangular internal thread abutting against the side of the trapezoidal external thread. This structure not only enhances the stability of the threaded connection and effectively prevents relative wobbling between the lens barrel and the backing, thereby improving the imaging quality of the optical lens, but also concentrates wear mainly at the tooth tip of the rectangular internal thread, making it easier to control and predict the wear location and reducing the risk of decreased imaging quality due to loose threads. Furthermore, this fit method can generate stable friction during assembly, which helps to achieve more precise torque control, further improving the accuracy and reliability of optical lens assembly. Attached Figure Description

[0018] Figure 1 This is a cross-sectional schematic diagram of the threaded structure of the optical lens according to Embodiment 1 of this utility model.

[0019] Label Explanation:

[0020] 1. Rear seat; 11. Internal thread kit; 111. Rectangular internal thread; 12. First fastener; 13. First mounting hole; 14. First sliding groove; 15. First shield; 2. Lens barrel; 21. External thread kit; 211. Trapezoidal external thread; 22. Second fastener; 23. Second mounting hole; 24. Second sliding groove; 25. Second shield. Detailed Implementation

[0021] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] Please refer to Figure 1 A threaded structure for an optical lens, including

[0023] Rear seat 1 is provided with a rectangular internal thread 111;

[0024] The mirror tube 2 is provided with a trapezoidal external thread 211 that mates with the rectangular internal thread 111;

[0025] The two corners of the tooth tip of the rectangular internal thread 111 abut against the side of the trapezoidal external thread 211.

[0026] As described above, the beneficial effects of this invention are as follows: by employing a rectangular internal thread 111 and a trapezoidal external thread 211, and designing the tooth tip of the rectangular internal thread 111 to abut the side of the trapezoidal external thread 211, a tight fit and uniform force distribution of the threads are achieved. This structure not only enhances the stability of the threaded connection and effectively prevents relative wobbling between the lens barrel 2 and the rear seat 1, thereby improving the imaging quality of the optical lens, but also concentrates wear mainly at the tooth tip of the rectangular internal thread 111, making it easier to control and predict the wear location and reducing the risk of decreased optical lens imaging quality due to thread loosening. Furthermore, this fit method can generate stable friction during assembly, which helps to achieve more precise torque control, further improving the accuracy and reliability of optical lens assembly.

[0027] Furthermore, both the rectangular internal thread 111 and the trapezoidal external thread 211 are multi-start threads.

[0028] As can be seen from the above description, designing the rectangular internal thread 111 and the trapezoidal external thread 211 as multi-start threads can improve the load-bearing capacity and transmission efficiency of the threads, make the thread fit tighter, further enhance the stability and reliability of the connection, and meet the requirements of optical lenses for high precision and stability.

[0029] Furthermore, the rear seat 1 is provided with an internal thread kit 11, and the rectangular internal thread 111 is provided on the internal thread kit 11.

[0030] As described above, the addition of the internal thread kit 11 facilitates the machining, installation, and replacement of the rectangular internal thread 111. Simultaneously, the internal thread kit 11 can be specially treated or made of suitable materials to optimize its performance without affecting the overall structure of the back seat 1, thus improving production flexibility.

[0031] Furthermore, the internal threaded assembly 11 is detachably mounted on the rear seat 1.

[0032] As described above, the detachable installation of the internal threaded assembly 11 greatly facilitates the maintenance and repair of the optical lens. When the threads are damaged or worn, it is not necessary to replace the entire rear mount 1; only the internal threaded assembly 11 needs to be replaced, thus reducing maintenance costs.

[0033] Furthermore, it also includes a first fastener 12, and the outer side wall of the rear seat 1 is provided with a first mounting hole 13. The first fastener 12 passes through the first mounting hole 13 and is connected to the internal threaded sleeve.

[0034] As can be seen from the above description, the setting of the first fastener 12 ensures the firmness and reliability of the connection between the internal thread kit 11 and the rear seat 1, effectively preventing the internal thread kit 11 from loosening or falling off due to vibration or external force, and ensuring the normal use of the optical lens.

[0035] Furthermore, the outer side wall of the rear seat 1 is also provided with a first sliding groove 14, the first mounting hole 13 is provided in the first sliding groove 14, and the first sliding groove 14 is provided with a slidable first blocking member 15, which is used to block the first mounting hole 13.

[0036] As can be seen from the above description, the first shielding member 15 can shield the first mounting hole 13 to prevent dust, foreign objects and the like from entering the mounting hole, avoid affecting the connection between the first fastener 12 and the internal thread kit 11, and at the same time improve the neatness and aesthetics of the rear seat 1.

[0037] Furthermore, the lens barrel 2 is provided with an external thread sleeve, and the trapezoidal external thread 211 is provided on the external thread sleeve 21.

[0038] As described above, the addition of the external thread fitting 21 facilitates the machining, installation, and replacement of the trapezoidal external thread 211, improving production flexibility and efficiency. The external thread fitting 21 can be optimized to meet different application requirements.

[0039] Furthermore, the external threaded assembly 21 is detachably mounted on the lens barrel 2.

[0040] As described above, the detachable installation of the external threaded assembly 21 makes the maintenance and repair of the lens barrel 2 more convenient. When the trapezoidal external thread 211 is worn or damaged, only the external threaded assembly 21 needs to be replaced, without replacing the entire lens barrel 2, thus reducing maintenance costs.

[0041] Furthermore, it also includes a second fastener 22, and the outer side wall of the external threaded kit 21 is provided with a second mounting hole 23. The second fastener 22 passes through the second mounting hole 23 and is connected to the lens barrel 2.

[0042] As can be seen from the above description, the setting of the second fastener 22 ensures the firmness and reliability of the connection between the external threaded kit 21 and the lens barrel 2, prevents the external threaded kit 21 from loosening or falling off due to vibration or external force, and ensures the normal use of the optical lens.

[0043] Furthermore, the outer side wall of the external threaded fitting 21 is also provided with a second sliding groove 24, the second mounting hole 23 is provided in the second sliding groove 24, and a slidable second blocking member 25 is provided in the second sliding groove 24, the second blocking member 25 is used to block the second mounting hole 23.

[0044] As described above, the second shield 25 can shield the second mounting hole 23 to prevent dust, foreign objects, etc. from entering the mounting hole, avoid affecting the connection between the second fastener 22 and the external thread kit 21, and at the same time improve the neatness and aesthetics of the lens barrel 2.

[0045] Please refer to Figure 1 One embodiment of this utility model is a threaded structure for an optical lens, comprising a rear seat 1 and a lens barrel 2. The rear seat 1 has a rectangular internal thread 111, and the lens barrel 2 has a trapezoidal external thread 211 that mates with the rectangular internal thread 111. The two corners of the tooth tips of the rectangular internal thread 111 abut against the sides of the trapezoidal external thread 211. Specifically, by employing the mating of the rectangular internal thread 111 and the trapezoidal external thread 211, and designing the corners of the tooth tips of the rectangular internal thread 111 to abut against the sides of the trapezoidal external thread 211, a tight fit and uniform force distribution of the threads are achieved. This structure not only enhances the stability of the threaded connection and effectively prevents relative wobbling between the lens barrel 2 and the rear seat 1, thereby improving the imaging quality of the optical lens, but also concentrates wear mainly at the corners of the tooth tips of the rectangular internal thread 111, making it easier to control and predict the wear location and reducing the risk of decreased imaging quality of the optical lens due to loose threads. Furthermore, this fitting method can generate stable friction during the assembly process, which helps to achieve more precise torque control and further improves the accuracy and reliability of optical lens assembly.

[0046] In this embodiment, both the rectangular internal thread 111 and the trapezoidal external thread 211 are single-start threads. The minor diameter of the rectangular internal thread 111 does not directly contact the major diameter of the trapezoidal external thread 211. The height from the contact point of the thread structure to the major diameter is less than the height of the rectangular internal thread 111 and the trapezoidal external thread 211. The pitch of the rectangular internal thread 111 and the trapezoidal external thread 211 is the same, and the pitch range is P0.2~P1.0. The nominal diameter range of the rectangular internal thread and the trapezoidal external thread is M3~M20. Only in this way can the rectangular internal thread 111 and the trapezoidal external thread 211 be properly mated.

[0047] In some other embodiments, the rectangular internal thread 111 and the trapezoidal external thread 211 are both multi-start threads. Designing the rectangular internal thread 111 and the trapezoidal external thread 211 as multi-start threads can improve the load-bearing capacity and transmission efficiency of the threads, make the thread fit tighter, further enhance the stability and reliability of the connection, and meet the requirements of optical lenses for high precision and stability.

[0048] Preferably, the rear seat 1 is provided with an internal threaded assembly 11, and the rectangular internal thread 111 is provided on the internal threaded assembly 11. The design of the internal threaded assembly 11 facilitates the machining, installation, and replacement of the rectangular internal thread 111. At the same time, the internal threaded assembly 11 can be specially treated or suitable materials can be selected to optimize its performance without affecting the overall structure of the rear seat 1, thus improving production flexibility. Specifically, the internal threaded assembly 11 is detachably installed on the rear seat 1. It is understood that the detachable installation method of the internal threaded assembly 11 greatly facilitates the maintenance and repair of the optical lens. When the threads are damaged or worn, it is not necessary to replace the entire rear seat 1; only the internal threaded assembly 11 needs to be replaced, reducing maintenance costs. More specifically, the threaded structure of the optical lens also includes a first fastener 12. The outer side wall of the rear seat 1 is provided with a first mounting hole 13. The first fastener 12 passes through the first mounting hole 13 and connects to the internal threaded sleeve. The setting of the first fastener 12 ensures the firmness and reliability of the connection between the internal threaded assembly 11 and the rear seat 1, effectively preventing the internal threaded assembly 11 from loosening or falling off due to vibration or external force, thus ensuring the normal use of the optical lens. One fastener 12 is a bolt or screw, which can be set according to the actual application requirements; the outer side wall of the rear seat 1 is also provided with a first sliding groove 14, the first mounting hole 13 is provided in the first sliding groove 14, and a sliding first shield 15 is provided in the first sliding groove 14. The first shield 15 is used to shield the first mounting hole 13. The first shield 15 can shield the first mounting hole 13 to prevent dust, foreign objects, etc. from entering the mounting hole, avoid affecting the connection between the first fastener 12 and the internal thread kit 11, and at the same time improve the neatness and aesthetics of the rear seat 1.

[0049] Preferably, the lens barrel 2 is provided with an external threaded sleeve, and the trapezoidal external thread 211 is provided on the external threaded assembly 21. The design of the external threaded assembly 21 facilitates the processing, installation, and replacement of the trapezoidal external thread 211, improving production flexibility and efficiency. The external threaded assembly 21 can be optimized to meet different usage requirements. Specifically, the external threaded assembly 21 is detachably installed on the lens barrel 2. This detachable installation method makes the maintenance and repair of the lens barrel 2 more convenient. When the trapezoidal external thread 211 is worn or damaged, only the external threaded assembly 21 needs to be replaced, without replacing the entire lens barrel 2, reducing maintenance costs. More specifically, the threaded structure of the optical lens also includes a second fastener 22. The outer wall of the external threaded assembly 21 is provided with a second mounting hole 23. The second fastener 22 passes through the second mounting hole 23 and connects to the lens barrel 2. The second fastener 22 ensures the firmness and reliability of the connection between the external threaded assembly 21 and the lens barrel 2, preventing the external threaded assembly 21 from loosening or falling off due to vibration or external force, thus ensuring the normal operation of the optical lens. The second fastener 22 is a bolt or screw; in detail, the outer side wall of the external threaded kit 21 is also provided with a second sliding groove 24, the second mounting hole 23 is provided in the second sliding groove 24, and a slidable second shield 25 is provided in the second sliding groove 24. The second shield 25 is used to shield the second mounting hole 23. It can be understood that the second shield 25 can shield the second mounting hole 23 to prevent dust, foreign objects, etc. from entering the mounting hole, avoid affecting the connection between the second fastener 22 and the external threaded kit 21, and at the same time improve the neatness and aesthetics of the lens barrel 2.

[0050] In summary, the thread structure of the optical lens provided by this utility model achieves a tight fit and uniform force distribution by employing a rectangular internal thread and a trapezoidal external thread, with the tooth tip of the rectangular internal thread abutting against the side of the trapezoidal external thread. This structure not only enhances the stability of the threaded connection and effectively prevents relative wobbling between the lens barrel and the backing, thereby improving the imaging quality of the optical lens, but also concentrates wear primarily at the tooth tip of the rectangular internal thread, making it easier to control and predict wear locations and reducing the risk of decreased imaging quality due to loose threads. Furthermore, this fit method generates stable friction during assembly, which helps to achieve more precise torque control, further improving the accuracy and reliability of optical lens assembly.

[0051] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A threaded structure for an optical lens, characterized in that, include The rear seat is equipped with a rectangular internal thread; The lens barrel is provided with a trapezoidal external thread that mates with the rectangular internal thread; The two corners of the tooth tip of the rectangular internal thread abut against the side of the trapezoidal external thread.

2. The threaded structure of the optical lens according to claim 1, characterized in that, Both the rectangular internal thread and the trapezoidal external thread are multi-start threads.

3. The threaded structure of the optical lens according to claim 1, characterized in that, The rear seat is provided with an internal thread assembly, and the rectangular internal thread is provided on the internal thread assembly.

4. The threaded structure of the optical lens according to claim 3, characterized in that, The internal threaded assembly is detachably mounted on the rear seat.

5. The threaded structure of the optical lens according to claim 4, characterized in that, It also includes a first fastener, wherein the outer side wall of the rear seat is provided with a first mounting hole, the first fastener passes through the first mounting hole and is connected to the internal threaded sleeve.

6. The threaded structure of the optical lens according to claim 5, characterized in that, The outer side wall of the rear seat is also provided with a first sliding groove, the first mounting hole is provided in the first sliding groove, and a sliding first blocking member is provided in the first sliding groove. The first blocking member is used to block the first mounting hole.

7. The threaded structure of the optical lens according to claim 1, characterized in that, The lens barrel is provided with an external threaded assembly, and the trapezoidal external thread is provided on the external threaded assembly.

8. The threaded structure of the optical lens according to claim 7, characterized in that, The external threaded assembly is detachably installed on the lens barrel.

9. The threaded structure of the optical lens according to claim 8, characterized in that, It also includes a second fastener, wherein the outer side wall of the external threaded kit is provided with a second mounting hole, the second fastener passes through the second mounting hole and is connected to the lens barrel.

10. The threaded structure of the optical lens according to claim 9, characterized in that, The outer side wall of the external threaded assembly is also provided with a second sliding groove, the second mounting hole is provided in the second sliding groove, and a slidable second blocking member is provided in the second sliding groove, the second blocking member being used to block the second mounting hole.

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