Limiting clamp for TVS circuit board welding
By designing a limiting fixture to hold the semiconductor laser pins, the short circuit problem caused by contact with the TVS circuit board during the soldering process was solved, achieving improvements in stability and aesthetics. It is suitable for semiconductor lasers of different sizes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-03-13
AI Technical Summary
In existing technologies, semiconductor lasers are prone to direct contact with TVS circuit boards during the welding process, increasing the risk of short circuits and resulting in poor welding quality, which affects the reliability and service life of the equipment.
Design a limiting fixture for TVS circuit board soldering, including first and second limiting mechanisms, which clamp the pins of a semiconductor laser through clamping arms to maintain an appropriate distance from the TVS circuit board, and use adjustment mechanisms and surface mounts to adjust the spacing to ensure soldering stability and aesthetics.
It effectively avoids short circuits between the semiconductor laser and the TVS circuit board, ensures welding quality, improves equipment stability and appearance consistency, and is suitable for semiconductor lasers of different sizes.
Smart Images
Figure CN223989140U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of semiconductor laser fixtures, and specifically relates to a limiting fixture for TVS circuit board welding. Background Technology
[0002] Semiconductor lasers, as key optoelectronic devices, are widely used in communications, medical applications, industrial processing, and many other fields. Their high performance and stability are crucial for ensuring the normal operation of the entire system. However, semiconductor lasers are highly susceptible to powerful pulses generated at the moment of power-on or surge interference from the power supply and other parts of the circuit. These surge phenomena, due to their instantaneous high energy and voltage instability, can cause serious damage to semiconductor lasers, even instantaneous burnout, thus affecting the reliability and lifespan of the equipment.
[0003] To effectively address this issue, the industry has introduced Transient Voltage Suppressor (TVS) technology. A TVS diode is a high-performance electronic component developed from traditional Zener diode technology, specifically designed to protect circuits from transient overvoltage surges. When a TVS diode is subjected to a reverse transient high-energy surge, it can quickly (typically within 10 seconds) dissipate the voltage. -12 With a response time on the order of seconds, the laser transforms its high impedance state into a low impedance state, rapidly absorbing surge power of up to several kilowatts and clamping the voltage between the two electrodes to a preset safe level. This process effectively suppresses the impact of surge voltage on the semiconductor laser, thereby greatly improving the device's surge resistance and operational stability.
[0004] Currently, the common method for connecting TVS circuit boards and semiconductor lasers is to directly insert the two pins of the semiconductor laser into slots on both sides of the TVS circuit board, followed by soldering. While this method simplifies the assembly process to some extent, it reveals significant problems in practice: the semiconductor laser housing can easily come into direct contact with the TVS circuit board during soldering. This not only increases the risk of short circuits but may also lead to heat transfer during soldering due to the close proximity of the semiconductor laser to the TVS circuit board, resulting in performance degradation of the semiconductor laser or poor soldering quality. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a limiting fixture for TVS circuit board welding, which can ensure that the semiconductor laser and the TVS circuit board maintain an appropriate distance during the welding process to prevent short circuits, while providing sufficient stability to ensure the quality of welding.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A limiting fixture for soldering TVS circuit boards, comprising:
[0008] A base is mounted on a workbench. A column is provided on one side of the base, a connecting block is provided on one side of the column, and a mounting seat is provided on one side of the connecting block.
[0009] A first limiting mechanism is provided on the upper part of the mounting base. The first limiting mechanism includes a first arm, one end of which is connected to a first connecting rod, and a first clamping arm is provided at the lower part of the first connecting rod.
[0010] The second limiting mechanism is located at the lower part of the mounting base. The second limiting mechanism includes a second arm, one end of which is connected to a second connecting rod. The lower part of the second connecting rod is provided with a second clamping arm. The first clamping arm and the second clamping arm are used to clamp the two pins of the semiconductor laser.
[0011] Furthermore, the first clamping arm and the second clamping arm have the same thickness, and the surfaces of the first clamping arm and the second clamping arm near the semiconductor laser are flush.
[0012] Furthermore, the mounting base is provided with a base at both the upper and lower parts. An adjusting screw is rotatably connected to the upper base, and a connecting plate is slidably connected to one side of the base. One end of the upper connecting plate is threadedly connected to the adjusting screw, and the other end of the upper connecting plate is fixedly connected to the first support arm. The other end of the lower connecting plate is fixedly connected to the second support arm. Both the first and second support arms are provided with gear teeth on one side. A gear frame is provided at one end of the mounting base, and a third gear is rotatably connected to the gear frame. The third gear meshes with the gear teeth of both the first and second support arms.
[0013] Furthermore, both the lower ends of the first and second clamping arms are provided with slots, and the pins are secured in the slots.
[0014] Furthermore, a first guide rail is provided on one side of the column, a first rack is provided on one side of the first guide rail, a slide block is slidably connected to the first guide rail, and a connecting block is installed on one side of the slide block; a coarse adjustment knob is rotatably connected to one side of the slide block, and a first gear that meshes with the first rack is provided at one end of the coarse adjustment knob.
[0015] Furthermore, a second guide rail is provided on one side of the slide block, and the connecting block is slidably mounted on the second guide rail. A second rack is provided on one side of the second guide rail, and a fine-tuning knob is rotatably connected to one side of the connecting block. One end of the fine-tuning knob is provided with a second gear that meshes with the second rack, and the transmission ratio between the second gear and the second rack is less than the transmission ratio between the first gear and the first rack.
[0016] Furthermore, the first connecting rod and the first clamping arm, as well as the second connecting rod and the second clamping arm, are provided with a plurality of patches on one side. The first connecting rod and the first clamping arm, the second connecting rod and the second clamping arm, and the patches are all provided with a plurality of grooves on one side. The other side of the patches is provided with a plurality of protrusions that engage with the grooves.
[0017] The beneficial effects of this utility model are:
[0018] 1) This utility model uses the first clamping arm and the second clamping arm to clamp the two pins of the semiconductor laser, ensuring the stability of the semiconductor laser when soldering to the TVS circuit board. The first clamping arm and the second clamping arm act as partitions to avoid short circuits caused by contact between the TVS circuit board and the semiconductor laser. In addition, the TVS circuit board is easy to place and can be attached to the fixture, saving time and costs.
[0019] 2) The first clamping arm and the second clamping arm have the same thickness, and the surfaces of the first clamping arm and the second clamping arm that are close to the semiconductor laser are flush, so that the distance between the semiconductor laser and the TVS circuit board after welding is consistent. This avoids short circuits when the semiconductor laser and the TVS circuit board come into contact, and the consistent thickness of the two ensures the aesthetics and consistency of the product appearance.
[0020] 3) By setting an adjustment mechanism, the distance between the first arm and the second arm can be adjusted, which is suitable for clamping and fixing pins of different widths.
[0021] 4) Slots are provided at the lower ends of the first and second clamping arms to hold the pins of the semiconductor laser, ensuring the stability of the semiconductor laser clamping.
[0022] 5) By setting coarse and fine adjustment knobs, the height of the fixture can be adjusted, which is suitable for use when soldering semiconductor laser pins of different heights, thus enhancing the flexibility of the fixture.
[0023] 6) By setting up patches, the spacing between the TVS circuit board and the semiconductor laser can be easily adjusted according to the actual situation. Attached Figure Description
[0024] Appendix Figure 1 This is a diagram showing the usage state of a limiting fixture for TVS circuit board soldering according to this utility model.
[0025] Appendix Figure 2 This is a top view of a limiting fixture for welding TVS circuit boards according to this utility model.
[0026] Appendix Figure 3 This is an exploded view of the first clamping arm and patch.
[0027] Appendix Figure 4 This is a schematic diagram of the patch structure.
[0028] In the diagram, 1. Base; 2. Column; 3. Coarse adjustment knob; 4. Slide; 5. Connecting block; 6. Mounting base; 7. Gear frame; 8. Third gear; 9. Adjusting screw; 10. Base; 11. Connecting plate; 12. First support arm; 13. First connecting rod; 14. First clamping arm; 15. Second support arm; 16. Second connecting rod; 17. Second clamping arm; 18. Semiconductor laser; 19. Fine adjustment knob; 20. Slot; 21. Patch; 22. Groove; 23. Protrusion. Detailed Implementation
[0029] The following will be combined with the appendix Figures 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0030] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0031] like Figure 1 As shown, a limiting fixture for TVS circuit board soldering includes a base 1, a first limiting mechanism and a second limiting mechanism. The base 1 is mounted on a workbench. A column 2 is provided on one side of the base 1, a connecting block 5 is provided on one side of the column 2, and a mounting seat 6 is provided on one side of the connecting block 5.
[0032] The first limiting mechanism is disposed on the upper part of the mounting base 6. The first limiting mechanism includes a first support arm 12, one end of the first support arm 12 is connected to a first connecting rod 13, and the lower part of the first connecting rod 13 is provided with a first clamping arm 14.
[0033] The second limiting mechanism is located at the lower part of the mounting base 6. The second limiting mechanism includes a second support arm 15, one end of which is connected to a second connecting rod 16. The lower part of the second connecting rod 16 is provided with a second clamping arm 17. The first clamping arm 14 and the second clamping arm 17 are used to clamp the two pins of the semiconductor laser 18 to ensure the stability of the TVS circuit board when it is soldered to the semiconductor laser 18.
[0034] When the TVS circuit board is soldered to the semiconductor laser 18, the two pins of the semiconductor laser 18 are clamped by the first clamping arm 14 and the second clamping arm 17 to prevent the semiconductor laser 18 from shaking during soldering. The TVS circuit board is attached to one side of the first clamping arm 14 and the second clamping arm 17. The first clamping arm 14 and the second clamping arm 17 isolate the TVS circuit board from the semiconductor laser 18 to prevent them from contacting and causing a short circuit, thus ensuring the quality of the soldering between the TVS circuit board and the semiconductor laser 18.
[0035] The first clamping arm 14 and the second clamping arm 17 have the same thickness, and the surfaces of the first clamping arm 14 and the second clamping arm 17 near the semiconductor laser 18 are flush. It can be inferred that the surfaces of the first clamping arm 14 and the second clamping arm 17 near the TVS circuit board are also flush, which facilitates positioning during TVS circuit board soldering and ensures that the distance between the semiconductor laser 18 and the TVS circuit board after soldering is consistent. This avoids short circuits when the semiconductor laser 18 contacts the TVS circuit board, and the consistent thickness of both ensures the aesthetics and consistency of the product appearance.
[0036] like Figure 1 As shown, the mounting base 6 has bases 10 at both the upper and lower parts. An adjusting screw 9 is rotatably connected to the upper base 10. A connecting plate 11 is slidably connected to one side of the base 10. One end of the upper connecting plate 11 is threadedly connected to the adjusting screw 9, and the other end of the upper connecting plate 11 is fixedly connected to the first support arm 12. The other end of the lower connecting plate 11 is fixedly connected to the second support arm 15. Both the first support arm 12 and the second support arm 15 have gear teeth on one side. A gear frame 7 is provided at one end of the mounting base 6. The upper part is rotatably connected to a third gear 8, which meshes with the teeth of the first arm 12 and the second arm 15. Rotating the adjusting screw 9 adjusts the position of the connecting plate 11 on the base 10. The upper connecting plate 11 drives the first arm 12 to extend and retract left and right. Under the action of gear transmission, the second arm 15 performs synchronous extension and retraction. The first arm 12 and the second arm 15 move closer or further away from each other at the same time. This is used to adjust the distance between the first arm 12 and the second arm 15 and is suitable for clamping and fixing pins of different widths.
[0037] like Figure 3 As shown, the lower ends of the first clamping arm 14 and the second clamping arm 17 are both provided with slots 20, and the pins are clamped in the slots 20 to ensure the stability of the pin clamping.
[0038] like Figure 1As shown, a first guide rail is provided on one side of the column 2, and a first rack (not shown in the figure) is provided on one side of the first guide rail. A slide block 4 is slidably connected to the first guide rail, and a connecting block 5 is installed on one side of the slide block 4. A coarse adjustment knob 3 is rotatably connected to one side of the slide block 4. A first gear (not shown in the figure) meshes with the first rack at one end of the coarse adjustment knob 3. By rotating the coarse adjustment knob 3, the slide block 4, the first limiting mechanism and the second limiting mechanism are moved on the column 2, thereby realizing the height adjustment of the first limiting mechanism and the second limiting mechanism, so as to adapt to the semiconductor laser 18 pins of different heights.
[0039] like Figure 1 As shown, a second guide rail is provided on one side of the slide block 4, and the connecting block 5 is slidably mounted on the second guide rail. A second rack is provided on one side of the second guide rail, and a fine-tuning knob 19 is rotatably connected to one side of the connecting block 5. A second gear (not shown in the figure) meshes with the second rack at one end of the fine-tuning knob 19, and the transmission ratio between the second gear and the second rack is less than the transmission ratio between the first gear and the first rack. By rotating the fine-tuning knob 19, the height of the first limiting mechanism and the second limiting mechanism on the slide block 4 can be finely adjusted, ensuring the accuracy of the first clamping arm 14 and the second clamping arm 17 in clamping the pins.
[0040] like Figure 3 , Figure 4 As shown, the first connecting rod 13, the first clamping arm 14, the second connecting rod 16, and the second clamping arm 17 are provided with a plurality of patches 21 on one side. The first connecting rod 13, the first clamping arm 14, the second connecting rod 16, the second clamping arm 17, and the patches 21 are all provided with a plurality of grooves 22 on one side. The other side of the patches 21 is provided with a plurality of protrusions 23 that engage with the grooves 22. By installing different numbers of patches 21, the welding time interval between the TVS circuit board and the semiconductor laser 18 can be adjusted.
[0041] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.
Claims
1. A limiting fixture for TVS circuit board soldering, characterized in that, The utility model relates to a semiconductor laser device fixing device Base is installed on the workbench, one side of base is equipped with stand, one side of stand is equipped with connecting block, one side of connecting block is equipped with mounting seat; First limiting mechanism is arranged on the upper portion of mounting seat, first limiting mechanism includes first support arm, one end of first support arm is connected with first connecting rod, and the lower portion of first connecting rod is equipped with first clamping arm; Second limiting mechanism is arranged on the lower portion of mounting seat, second limiting mechanism includes second support arm, one end of second support arm is connected with second connecting rod, and the lower portion of second connecting rod is equipped with second clamping arm, and first clamping arm and second clamping arm are used to clamp the two pins of semiconductor laser device.
2. The limiting fixture for TVS circuit board welding according to claim 1, wherein, The thickness of first clamping arm and second clamping arm is equal, and the surface of first clamping arm and second clamping arm near semiconductor laser device is flush.
3. The limiting fixture for TVS circuit board welding according to claim 1, wherein, The upper portion and lower portion of mounting seat are equipped with base, the upper portion of base is rotatably connected with adjusting screw, one side of base is slidably connected with connecting plate, one end of connecting plate of upper portion is threadedly connected with adjusting screw, the other end of connecting plate of upper portion is fixedly connected with first support arm, the other end of connecting plate of lower portion is fixedly connected with second support arm, one side of first support arm and second support arm is equipped with gear tooth, one end of mounting seat is equipped with gear rack, third gear is rotatably connected on gear rack, and third gear is engaged with the gear tooth of first support arm and second support arm.
4. The limiting fixture for TVS circuit board welding according to claim 1, wherein, The lower end of first clamping arm and second clamping arm is equipped with clamping groove, and the pin is clamped in clamping groove.
5. The limiting fixture for TVS circuit board soldering of claim 1, wherein, One side of stand is equipped with first guide rail, one side of first guide rail is equipped with first rack, sliding seat is slidably connected on first guide rail, and connecting block is installed on one side of sliding seat, one side of sliding seat is rotatably connected with coarse adjustment knob, and one end of coarse adjustment knob is equipped with first gear that is engaged with first rack.
6. A limiting fixture for TVS circuit board soldering according to claim 5, wherein, One side of sliding seat is equipped with second guide rail, connecting block is slidably installed on second guide rail, one side of second guide rail is equipped with second rack, one side of connecting block is rotatably connected with fine adjustment knob, one end of fine adjustment knob is equipped with second gear that is engaged with second rack, and the transmission ratio of second gear and second rack is less than the transmission ratio of first gear and first rack.
7. A limiting fixture for TVS circuit board welding according to any one of claims 1-6, characterized in that, One side of first connecting rod, first clamping arm, second connecting rod and second clamping arm is equipped with a plurality of patches, one side of first connecting rod, first clamping arm, second connecting rod, second clamping arm and patch is equipped with a plurality of recesses, and the other side of patch is equipped with a plurality of convex parts that are engaged with recesses.