Thread structure of optical lens

Abstract

The invention discloses a thread structure of an optical lens, which comprises a rear seat and a lens barrel, and is characterized in that the rear seat is provided with a rectangular internal thread; the lens barrel is provided with trapezoidal external threads matched with the rectangular internal threads; the two corners of the tooth crest of the rectangular internal thread abut against the side edges of the trapezoidal external thread. The rectangular internal threads are matched with the trapezoidal external threads, and the addendum angle parts of the rectangular internal threads are designed to abut against the side edges of the trapezoidal external threads, so that tight matching and uniform stress of the threads are realized. The structure not only enhances the stability of threaded connection, but also enables the wear to be mainly concentrated on the addendum angle part of the rectangular internal thread, facilitates the control and prediction of the wear part, and reduces the risk of the reduction of the imaging quality of the optical lens caused by the loosening of the thread. Besides, stable friction force can be formed in the assembling process through the matching mode, more accurate torsion control can be achieved, and the assembling accuracy and reliability of the optical lens are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical lenses, and particularly to a threaded structure of an optical lens. Background Art

[0002] In the manufacturing of optical lenses, the connection between the lens barrel and the rear seat is usually achieved by means of ordinary threads. However, there are many problems with this traditional threaded fitting method. First, when two sets of the same threads are paired with each other, it is difficult to precisely control the gap between the threads, resulting in loosening of the fit during mass production, which in turn affects the imaging quality and stability of the lens. Second, since the torque is difficult to effectively adjust, it is usually necessary to apply glue manually to improve the torque, which not only increases the production cost but also may lead to an increase in the rejection rate of the finished products. In addition, the locking effect of the traditional threaded fitting is not ideal, and shaking is likely to occur, thus affecting the imaging quality of the optical lens. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to provide a threaded structure of an optical lens to solve the problems of thread loosening, difficult torque control, and poor locking effect existing in the prior art.

[0004] To solve the above technical problem, the technical solution adopted by the present invention is: a threaded structure of an optical lens, comprising a rear seat provided with a rectangular internal thread; a lens barrel provided with a trapezoidal external thread that mates with the rectangular internal thread; two corner portions of the tooth top of the rectangular internal thread abut against the side edges of the trapezoidal external thread.

[0005] The beneficial effects of the present invention are as follows: The threaded structure of the optical lens provided by the present invention realizes the tight fit and uniform stress of the threads by adopting the combination of a rectangular internal thread and a trapezoidal external thread, and designing that the tooth top corners of the rectangular internal thread abut against the side edges of the trapezoidal external thread. This structure not only enhances the stability of the threaded connection, effectively prevents relative shaking between the lens barrel and the rear seat, thereby improving the imaging quality of the optical lens; but also makes the wear mainly concentrated on the tooth top corners of the rectangular internal thread, facilitating the control and prediction of the wear position, and reducing the risk of deterioration of the imaging quality of the optical lens caused by thread loosening. In addition, this fitting method can form a stable frictional force during the assembly process, which helps to achieve more precise torque control and further improves the accuracy and reliability of the assembly of the optical lens. Brief Description of the Drawings

[0006] Figure 1 It is a cross-sectional structure schematic diagram of the threaded structure of the optical lens according to Embodiment 1 of the present invention.

[0007] Label Description: 1. Back seat; 11. Internal thread kit; 111. Rectangular internal thread; 12. First fastener; 13. First mounting hole; 14. First sliding groove; 15. First shielding member; 2. Lens barrel; 21. External thread kit; 211. Trapezoidal external thread; 22. Second fastener; 23. Second mounting hole; 24. Second sliding groove; 25. Second shielding member. DETAILED DESCRIPTION

[0008] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0009] Please refer to Figure 1 , a thread structure of an optical lens, comprising The rear seat 1 is provided with a rectangular internal thread 111; The lens barrel 2 is provided with a trapezoidal external thread 211 matching with the rectangular internal thread 111; Two corners of the tooth top of the rectangular internal thread 111 abut against the side edges of the trapezoidal external thread 211 .

[0010] As can be seen from the above description, the beneficial effects of the present invention are: by adopting the cooperation of the rectangular internal thread 111 and the trapezoidal external thread 211, and designing the tooth top angle of the rectangular internal thread 111 to contact the side of the trapezoidal external thread 211, the tight cooperation and uniform force of the thread are achieved. This structure not only enhances the stability of the threaded connection, effectively prevents the relative shaking between the lens barrel 2 and the rear seat 1, thereby improving the imaging quality of the optical lens; it also makes the wear mainly concentrated on the tooth top angle of the rectangular internal thread 111, which is convenient for controlling and predicting the wear parts, and reduces the risk of optical lens imaging quality degradation caused by loose threads. In addition, this cooperation method can form a stable friction force during the assembly process, which helps to achieve more accurate torque control and further improves the accuracy and reliability of optical lens assembly.

[0011] Furthermore, the rectangular internal thread 111 and the trapezoidal external thread 211 are both multi-thread threads.

[0012] From the above description, it can be seen that designing the rectangular internal thread 111 and the trapezoidal external thread 211 as multi-thread threads can improve the load-bearing capacity and transmission efficiency of the threads, make the threads fit more tightly, further enhance the stability and reliability of the connection, and meet the requirements of optical lenses for high precision and stability.

[0013] Furthermore, the rear seat 1 is provided with an internal thread set 11 , and the rectangular internal thread 111 is provided on the internal thread set 11 .

[0014] As described above, the design of adding the internal thread kit 11 facilitates the processing, installation, and replacement of the rectangular internal thread 111. Meanwhile, the internal thread kit 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, improving the flexibility of production.

[0015] Furthermore, the internal thread kit 11 is detachably installed on the rear seat 1.

[0016] As described above, the detachable installation method of the internal thread kit 11 brings great convenience to the maintenance and repair of the optical lens. When the thread is damaged or worn, there is no need to replace the entire rear seat 1, and only the internal thread kit 11 needs to be replaced, reducing the repair cost.

[0017] Furthermore, it further includes a first fastener 12. A first mounting hole 13 is provided on the outer side wall of the rear seat 1, and the first fastener 12 passes through the first mounting hole 13 and is connected to the internal thread sleeve.

[0018] As described above, 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.

[0019] Furthermore, a first sliding groove 14 is further provided on the outer side wall of the rear seat 1. The first mounting hole 13 is arranged in the first sliding groove 14, and a slidable first shielding member 15 is provided in the first sliding groove 14. The first shielding member 15 is used to shield the first mounting hole 13.

[0020] As described above, the first shielding member 15 can shield the first mounting hole 13, preventing dust, foreign objects, etc. from entering the mounting hole, avoiding affecting the connection between the first fastener 12 and the internal thread kit 11, and at the same time improving the neatness and aesthetics of the appearance of the rear seat 1.

[0021] Furthermore, the lens barrel 2 is provided with an external thread sleeve, and the trapezoidal external thread 211 is arranged on the external thread kit 21.

[0022] As described above, the design of adding the external thread kit 21 facilitates the processing, installation, and replacement of the trapezoidal external thread 211, improving the flexibility and efficiency of production. The external thread kit 21 can be optimized to meet different usage requirements.

[0023] Furthermore, the external thread kit 21 is detachably installed on the lens barrel 2.

[0024] As can be seen from the above description, the detachable installation mode of the external thread set 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 thread set 21 needs to be replaced, without replacing the entire lens barrel 2, which reduces the maintenance cost.

[0025] Furthermore, it also includes a second fastener 22 . The outer side wall of the external threaded sleeve 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 .

[0026] As can be seen from the above description, the provision of the second fastener 22 ensures the firmness and reliability of the connection between the external threaded sleeve 21 and the lens barrel 2, prevents the external threaded sleeve 21 from loosening or falling off due to vibration or external force, and ensures the normal use of the optical lens.

[0027] Furthermore, the outer side wall of the external threaded sleeve 21 is also provided with a second sliding groove 24, the second mounting hole 23 is arranged in the second sliding groove 24, and a slidable second shielding member 25 is provided in the second sliding groove 24, and the second shielding member 25 is used to shield the second mounting hole 23.

[0028] From the above description, it can be seen that the second shielding member 25 can shield the second mounting hole 23 to prevent dust, foreign matter, 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 appearance of the lens barrel 2.

[0029] Please refer to Figure 1 The first embodiment of the present invention is: a thread structure of an optical lens, comprising a rear seat 1 and a lens barrel 2, wherein the rear seat 1 is provided with a rectangular internal thread 111, and the lens barrel 2 is provided with a trapezoidal external thread 211 matched with the rectangular internal thread 111; the two corners of the tooth top of the rectangular internal thread 111 abut against the side of the trapezoidal external thread 211; specifically, by adopting the matching of the rectangular internal thread 111 and the trapezoidal external thread 211, and designing the tooth top corner of the rectangular internal thread 111 to abut against the side of the trapezoidal external thread 211, the tight matching and uniform force of the thread are achieved. This structure not only enhances the stability of the threaded connection, effectively prevents the relative shaking between the lens barrel 2 and the rear seat 1, thereby improving the imaging quality of the optical lens; it also makes the wear mainly concentrated on the tooth top corner of the rectangular internal thread 111, which is convenient for controlling and predicting the wear position, and reduces the risk of optical lens imaging quality degradation caused by thread loosening. In addition, this matching method can form a stable friction force during the assembly process, which helps to achieve more precise torque control and further improve the accuracy and reliability of optical lens assembly.

[0030] In this embodiment, the rectangular internal thread 111 and the trapezoidal external thread 211 are both single-threaded. 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 should be less than the heights of the rectangular internal thread 111 and the trapezoidal external thread 211. The pitches of the rectangular internal thread 111 and the trapezoidal external thread 211 are the same, and the pitch range is P0.2 to P1.0. The nominal diameters of the rectangular internal thread and the trapezoidal external thread range from M3 to M20. In this way, the cooperation between the rectangular internal thread 111 and the trapezoidal external thread 211 can be ensured.

[0031] In some other embodiments, the rectangular internal thread 111 and the trapezoidal external thread 211 are both multi-threaded. Designing the rectangular internal thread 111 and the trapezoidal external thread 211 as multi-threaded can improve the load-bearing capacity and transmission efficiency of the thread, make the thread fit more tightly, further enhance the stability and reliability of the connection, and meet the requirements of the optical lens for high precision and stability.

[0032] Preferably, the rear seat 1 is provided with an internal thread kit 11, and the rectangular internal thread 111 is arranged in the internal thread kit 11. Adding the design of the internal thread kit 11 facilitates the processing, installation, and replacement of the rectangular internal thread 111. At the same time, 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 rear seat 1, improving the flexibility of production. Specifically, the internal thread kit 11 is detachably installed on the rear seat 1. It can be understood that the detachable installation method of the internal thread kit 11 brings great convenience to the maintenance and repair of the optical lens. When the thread is damaged or worn, there is no need to replace the entire rear seat 1, and only the internal thread kit 11 needs to be replaced, reducing the maintenance cost. More specifically, the thread structure of the optical lens further includes a first fastener 12. A first mounting hole 13 is provided on the outer side wall of the rear seat 1. The first fastener 12 passes through the first mounting hole 13 and is connected to the internal thread sleeve. 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. The first fastener 12 is a bolt or a screw, which can be specifically set according to actual application requirements. A first sliding groove 14 is also provided on the outer side wall of the rear seat 1. The first mounting hole 13 is arranged in the first sliding groove 14. A slidable first shielding member 15 is provided in the first sliding groove 14. The first shielding member 15 is used to shield the first mounting hole 13. The first shielding member 15 can shield the first mounting hole 13 to prevent dust, foreign objects, etc. from entering the mounting hole, avoiding affecting the connection between the first fastener 12 and the internal thread kit 11, and at the same time improving the cleanliness and aesthetics of the appearance of the rear seat 1.

[0033] Preferably, the lens barrel 2 is provided with an external thread sleeve, and the trapezoidal external thread 211 is provided on the external thread kit 21. The design of the external thread kit 21 is increased, which is convenient for the processing, installation and replacement of the trapezoidal external thread 211, and improves the flexibility and efficiency of production. The external thread kit 21 can be optimized to meet different usage requirements; specifically, the external thread kit 21 can be detachably installed on the lens barrel 2, and the detachable installation method of the external thread kit 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 thread kit 21 needs to be replaced, and the entire lens barrel 2 does not need to be replaced, which reduces the maintenance cost; more specifically, the thread structure of the optical lens also includes a second fastener 22, and the outer side wall of the external thread kit 21 is provided with a second mounting hole 23, and the second fastener 22 passes through the second mounting hole 23 and is connected to the lens barrel 2. The provision of the second fastener 22 ensures the firmness and reliability of the connection between the external thread kit 21 and the lens barrel 2, prevents the external thread kit 21 from loosening or falling off due to vibration or external force, and ensures the normal use of the optical lens. Use; the second fastener 22 is a bolt or a 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 arranged in the second sliding groove 24, and a slidable second shielding member 25 is provided in the second sliding groove 24, and the second shielding member 25 is used to shield the second mounting hole 23; it can be understood that the second shielding member 25 can shield the second mounting hole 23 to prevent dust, foreign matter, 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 appearance of the lens barrel 2.

[0034] In summary, the thread structure of the optical lens provided by the present invention achieves tight fit and uniform force of the thread by adopting the cooperation of the rectangular internal thread and the trapezoidal external thread, and designs the tooth top angle of the rectangular internal thread to contact the side of the trapezoidal external thread. This structure not only enhances the stability of the threaded connection, effectively prevents the relative shaking between the lens barrel and the back seat, thereby improving the imaging quality of the optical lens; it also makes the wear mainly concentrated on the tooth top angle of the rectangular internal thread, which is convenient for controlling and predicting the wear parts, and reduces the risk of reduced imaging quality of the optical lens due to loose threads. In addition, this matching method can form a stable friction force during the assembly process, which helps to achieve more accurate torque control and further improves the accuracy and reliability of optical lens assembly.

[0035] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A threaded structure of an optical lens, characterized in that, Comprising A rear seat, provided with a rectangular internal thread; A lens barrel, provided with a trapezoidal external thread that mates with the rectangular internal thread; Two corner portions of the tooth crest of the rectangular internal thread abut against the side edges 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 thread structure of the optical lens according to claim 1, characterized in that, The rear seat is provided with an internal thread kit, and the rectangular internal thread is provided on the internal thread kit.

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

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

6. The thread structure of the optical lens according to claim 5, characterized in that, A first sliding groove is further provided on the outer side wall of the rear seat. The first mounting hole is provided in the first sliding groove, and a slidable first shielding member is provided in the first sliding groove. The first shielding member is used to shield the first mounting hole.

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

8. The threaded structure of the optical lens according to claim 7, wherein, The external thread kit is detachably mounted on the lens barrel.

9. The threaded structure of the optical lens according to claim 8, characterized in that, It further includes a second fastener. A second mounting hole is provided on the outer side wall of the external thread kit, and 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, wherein, A second sliding groove is further provided on the outer side wall of the external thread kit. The second mounting hole is provided in the second sliding groove, and a slidable second shielding member is provided in the second sliding groove. The second shielding member is used to shield the second mounting hole.

Images