A to-can component placement jig
By designing a TO-CAN component placement fixture, using a limiting ring and spring structure to stabilize the component, and combining it with a blue film with adhesive to prevent dust contamination, the problem of contamination of the ball lens during the transfer process was solved, achieving stability and protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN JIUZHOU OPTO-ELECTRONICS LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-24
AI Technical Summary
During the TO-CAN component transfer process, the ball lens is prone to dust accumulation and contamination.
A TO-CAN component placement fixture was designed, including structures such as concave strips, vertical rods, cylindrical shells, top round shells, and springs. The TO-CAN component is stably fixed by the cooperation of the limiting ring and the spring, and a blue film with glue is used to prevent dust from contaminating the spherical lens.
It improves the stability and safety of TO-CAN component placement, prevents the ball lens from being contaminated by dust during transfer, and facilitates component removal and placement.
Smart Images

Figure CN224546756U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of TO-CAN component processing technology, and in particular to a TO-CAN component placement fixture. Background Technology
[0002] The TO-CAN component is a device on the optical connector used for converting electrical signals to optical signals. Its structure is as follows: Figure 5 The TO-CAN assembly includes a socket 5, on which a housing 50 is welded. A ball lens 51 is located at the lower end of the housing 50. An optical signal and electrical signal conversion module is located inside the housing 50. Multiple pins 52 are connected to the socket 5. Currently, when transferring the TO-CAN assembly, it is mostly placed with the ball lens 51 facing upwards. During placement, the pins 52 are inserted into pre-set holes. This method makes it easy for dust to accumulate on the ball lens 51 during transfer, or for the ball lens 51 to become contaminated due to operator contact. Utility Model Content
[0003] This invention provides a TO-CAN component placement fixture to overcome the shortcomings of the prior art, solving the problem of dust easily getting on the ball lens and being easily contaminated during transfer, thus demonstrating strong practicality.
[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted: A TO-CAN component placement fixture includes a concave strip with multiple pairs of vertical rods connected by threads. A cylindrical shell is fixed to the upper end of each vertical rod. The cylindrical shell is open at the upper end and closed at the lower end. An upper convex edge is formed at the upper end of the cylindrical shell, and a limit ring is fixed on the upper convex edge. An upper top circular shell is movably disposed inside the cylindrical shell. A lower convex edge is formed at the upper end of the upper top circular shell. The outer periphery of the lower convex edge abuts against the inner periphery of the cylindrical shell. A spring is sleeved on the upper top circular shell. The upper end of the spring abuts against the lower wall of the lower convex edge, and the lower end of the spring abuts against the lower end of the cylindrical shell. The lower end of the cylindrical shell is movably provided with a movable tube, the upper end of which is fixed to the lower end of the upper cylindrical shell. A convex plate is symmetrically welded to the outer periphery of the lower end of the movable tube. An outer support rod is provided on the outer end of the convex plate. A concave top piece is fitted on the outer support rod. An oblique hole is opened on the concave top piece. The inner end of the oblique hole extends upward at an angle. The outer support rod passes through the oblique hole. A movable arm is installed on the outer end of the concave top piece by screws. A movable lower plate is formed at the lower end of the movable arm. The movable lower plate is located on the upper side of the concave strip. Multiple sets of constraint holes are opened on the concave strip. A pair of limit screws are threadedly connected to the movable lower plate. The limit screws pass through the constraint holes. An inner convex plate is provided at the upper end of the movable arm. A constraint screw is threadedly connected to the inner convex plate. A limit upper plate is fitted on the constraint screw. A pair of guide holes are opened on the limit upper plate. The constraint screw passes through the guide holes.
[0005] Furthermore, the lower end of the concave strip is bent with a pad.
[0006] Furthermore, a retaining ring is fixed to the lower convex edge by screws, and a constraint ring is formed on the inner circumference of the retaining ring.
[0007] Furthermore, a blue film with adhesive on both sides is pasted onto the inner circumference of the top round shell.
[0008] Furthermore, the lower wall of the limiting upper plate is formed with an inner top protrusion, and a V-shaped spring is fixed on the outer side of the inner top protrusion, with both ends of the V-shaped spring abutting against the inner end of the inner protrusion.
[0009] The advantages of the above technical solution are: Compared to existing technologies, this invention improves the stability and safety of the TO-CAN assembly after placement. When the TO-CAN assembly is placed, it presses down on the upper cylindrical shell, causing the spring to generate an upward force, which in turn drives the upper cylindrical shell to move upward. Furthermore, after placement, the lower wall of the limiting plate abuts against the upper wall of the tube seat, thus fixing the TO-CAN assembly to the fixture. This prevents the TO-CAN assembly from moving during transfer.
[0010] Compared with the prior art, this utility model protects the ball lens with an upper circular shell to prevent dust or mishandling from damaging the ball lens during the transfer process. At the same time, the blue film with adhesive on both sides can absorb and stick dust to prevent damage to the ball lens.
[0011] This invention facilitates the removal of the limit on the TO-CAN component. To remove the limit, simply move the upper limit plate outward to remove the limit on the upper end of the TO-CAN component. This allows the upper round shell to lift the TO-CAN component under the elastic force of the spring, making it easier to remove the TO-CAN component. Attached Figure Description
[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a further detailed description of this utility model in conjunction with the accompanying drawings.
[0013] Figure 1 The diagram shows an application of the TO-CAN component placement fixture.
[0014] Figure 2 This diagram illustrates an example structure of one of the units in the TO-CAN component placement fixture. Figure 1 .
[0015] Figure 3 This diagram illustrates an example structure of one of the units in the TO-CAN component placement fixture. Figure 2 .
[0016] Figure 4 This diagram illustrates an example structure of one of the units in the TO-CAN component placement fixture. Figure 3 .
[0017] Figure 5 A structural diagram of the TO-CAN component is shown. Detailed Implementation
[0018] like Figures 1-5 As shown, a TO-CAN component placement fixture includes a concave strip 1, with a pad 10 bent at the lower end of the concave strip 1. Multiple pairs of vertical rods 2 are threaded onto the concave strip 1. A cylindrical shell 20 is fixed to the upper end of each vertical rod 2. The cylindrical shell 20 is open at the upper end and closed at the lower end. An upper flange 21 is formed at the upper end of the cylindrical shell 20, and a limit ring 22 is fixed on the upper flange 21. An upper top circular shell 24 is movably disposed inside the cylindrical shell 20. The inner circumference is covered with a blue film 26 with adhesive on both sides. The upper end of the top round shell 24 is formed with a lower convex edge 23. A fixing ring 280 is fixed to the lower convex edge 23 by screws. A constraint ring 28 is formed on the inner circumference of the fixing ring 280. The outer circumference of the lower convex edge 23 abuts against the inner circumference of the cylindrical shell 20. A spring 25 is sleeved on the top round shell 24. The upper end of the spring 25 abuts against the lower wall of the lower convex edge 23, and the lower end of the spring 25 abuts against the lower end of the cylindrical shell 20.
[0019] A movable tube 29 is movably provided at the lower end of the cylindrical shell 20. The upper end of the movable tube 29 is fixed to the lower end of the upper cylindrical shell 24. A protruding plate 30 is symmetrically welded to the outer periphery of the lower end of the movable tube 29. An outer support rod 31 is provided at the outer end of the protruding plate 30. A concave top piece 32 is fitted on the outer support rod 31. An oblique hole 33 is opened on the concave top piece 32. The inner end of the oblique hole 33 extends upward at an angle. The outer support rod 31 passes through the oblique hole 33. A movable arm 34 is installed on the outer end of the concave top piece 32 by screws. A movable lower plate 35 is formed at the lower end of the movable arm 34. The movable lower plate 35 is located on the upper side of the concave strip 1. Multiple sets of constraint holes 11 are provided. A pair of limit screws 36 are threadedly connected to the lower movable plate 35. The limit screws 36 pass through the constraint holes 11. The upper end of the movable arm 34 is provided with an inner convex plate 37. A constraint screw 39 is threadedly connected to the inner convex plate 37. A limit upper plate 38 is sleeved on the constraint screw 39. A pair of guide holes 40 are provided on the limit upper plate 38. The constraint screw 39 passes through the guide holes 40. An inner top convex plate 42 is formed on the lower wall of the limit upper plate 38. A V-shaped spring piece 41 is fixed on the outer side of the inner top convex plate 42. The two ends of the V-shaped spring piece 41 abut against the inner end of the inner convex plate 37.
[0020] In this embodiment, when placing the TO-CAN assembly, the operator places the ball lens 51 inside the upper cylindrical shell 24, ensuring that the lower end of the tube shell 50 abuts against the upper wall of the lower convex edge 23. Simultaneously, the tube shell 50 passes through the constraint ring 28. Then, the lower convex edge 23 is pressed downwards, causing the upper cylindrical shell 24, the movable tube 29, and the outer support rod 31 to move downwards. During this process, the outer support rod 31 acts on the oblique hole 33, thereby causing the concave top piece 32 and the movable arm 34 to move downwards. Move inward until the tube seat 5 is located below the upper limiting plate 38, and then release the external pulling force on the upper limiting plate 38. Then, the upper limiting plate 38 moves inward under the action of the V-shaped spring piece 41 and is located directly above the tube seat 5. At this time, the TO-CAN assembly will be fixed between the upper round shell 24 and the upper limiting plate 38. After placement, the upper round shell protects the ball lens 51, thus avoiding the problem of the ball lens 51 being contaminated.
[0021] In this embodiment, when the TO-CAN component is removed, the operator moves the upper limit plate 38 outward and cancels the upper limit plate 38's restriction on the TO-CAN component. Then, the TO-CAN component will be lifted up by the action of the spring 25.
[0022] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A TO-CAN component placement fixture, characterized in that, Includes a concave strip (1), on which multiple pairs of vertical rods (2) are connected by threads. A cylindrical shell (20) is fixed at the upper end of the vertical rod (2). The upper end of the cylindrical shell (20) is open and the lower end is closed. An upper convex edge (21) is formed at the upper end of the cylindrical shell (20). A limit ring (22) is fixed on the upper convex edge (21). An upper top round shell (24) is movably provided inside the cylindrical shell (20). A lower convex edge (23) is formed at the upper end of the upper top round shell (24). The outer periphery of the lower convex edge (23) abuts against the inner periphery of the cylindrical shell (20). A spring (25) is sleeved on the upper top round shell (24). The upper end of the spring (25) abuts against the lower wall of the lower convex edge (23), and the lower end of the spring (25) abuts against the lower end of the cylindrical shell (20). A movable tube (29) is movably provided at the lower end of the cylindrical shell (20). The upper end of the movable tube (29) is fixed to the lower end of the upper cylindrical shell (24). A protruding plate (30) is symmetrically welded to the outer periphery of the lower end of the movable tube (29). An outer support rod (31) is provided at the outer end of the protruding plate (30). A concave top piece (32) is fitted on the outer support rod (31). An oblique hole (33) is opened on the concave top piece (32). The inner end of the oblique hole (33) extends upward at an angle. The outer support rod (31) passes through the oblique hole (33). A movable arm (34) is installed on the outer end of the concave top piece (32) by screws. The lower end of the movable arm (34) forms a... The movable lower plate (35) is located on the upper side of the concave strip (1). The concave strip (1) has multiple sets of constraint holes (11). A pair of limit screws (36) are threadedly connected to the movable lower plate (35). The limit screws (36) pass through the constraint holes (11). The upper end of the movable arm (34) is provided with an inner convex plate (37). A constraint screw (39) is threadedly connected to the inner convex plate (37). A limit upper plate (38) is sleeved on the constraint screw (39). A pair of guide holes (40) are provided on the limit upper plate (38). The constraint screws (39) pass through the guide holes (40).
2. The TO-CAN component placement fixture according to claim 1, characterized in that, The lower end of the concave strip (1) is bent with a pad strip (10).
3. The TO-CAN component placement fixture according to claim 1, characterized in that, A retaining ring (280) is fixed to the lower convex edge (23) by screws, and a constraint ring (28) is formed on the inner circumference of the retaining ring (280).
4. The TO-CAN component placement fixture according to claim 1, characterized in that, The inner circumference of the top round shell (24) is covered with a blue film (26) with glue on both sides.
5. The TO-CAN component placement fixture according to claim 1, characterized in that, The lower wall of the limiting plate (38) is formed with an inner top protrusion (42), and a V-shaped spring piece (41) is fixed on the outer side of the inner top protrusion (42). The two ends of the V-shaped spring piece (41) abut against the inner end of the inner protrusion (37).