PCB welding jig of water meter
By designing a welding fixture for water meter PCB boards, and using limit and locking pins to achieve precise alignment and fixation of the transmitter and receiver boards, the problem of inaccurate installation of the transmitter and receiver boards was solved, and the welding quality and device reliability were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-03-31
AI Technical Summary
The installation and positioning of the transmitter and receiver boards and the light-emitting circuit board in existing water meters are inaccurate and unstable, affecting the accuracy of light transmission counting.
Design a PCB board welding fixture for a water meter, including a fixture body, a limiting pin, and a locking pin. By setting multiple slots and holes in the positioning groove, ensure the precise alignment of the transmitter board and receiver board with the light-emitting circuit board, and fix their positions by the limiting and locking pins.
It improves the assembly accuracy and welding stability of the transmitter and receiver boards and the light-emitting circuit board, prevents loosening caused by vibration or external force, and enhances the reliability and counting accuracy of the optical encoding device.
Smart Images
Figure CN224068876U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water meter manufacturing technology, and in particular to a PCB board welding fixture for water meters. Background Technology
[0002] As water meters become increasingly intelligent, optical encoding devices are widely used for collecting and converting readings from mechanical counters. Existing water meters with optical encoding devices typically include a counting wheel, a transmitter, a receiver, and a light-emitting circuit board. The transmitter and receiver are vertically soldered to the light-emitting circuit board and are positioned on opposite sides of the counting wheel. When the counting wheel rotates, the photoelectric receiver receives several sets of binary coded information.
[0003] However, in existing technologies, the mounting and positioning of the transmitter and receiver boards with the light-emitting circuit board are not accurate or stable enough. After prolonged use, uncontrollable factors (such as vibration, temperature changes, etc.) may cause deviations in the positions of the transmitter and receiver boards, thus affecting the accuracy of light transmission counting. Therefore, it is necessary to design a welding fixture that can improve the mounting accuracy and stability of the transmitter and receiver boards with the light-emitting circuit board. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a PCB board welding fixture for water meters, so as to solve the problem of inaccurate and unstable installation and positioning of the transmitter board and receiver board with the light-emitting circuit board in the prior art.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a PCB board welding fixture for water meters, comprising...
[0006] The fixture body has a reference platform and a positioning groove. The positioning groove has multiple slots. The extension direction of the slots is perpendicular to the plane where the reference platform is located. The reference platform is used for laying the light-emitting circuit board flat. The slots are used for inserting the emitting board or the receiving board. Both the emitting board and the receiving board are provided with locking holes and limiting holes.
[0007] A limiting pin is provided in the positioning groove and abuts against the limiting holes of the transmitting plate and the receiving plate;
[0008] A locking pin is provided in the positioning groove and is used to pass through the locking hole of the transmitter plate and the receiver plate.
[0009] Furthermore, the number of light-emitting circuit boards is multiple, and the number of positioning slots is equal to the number of light-emitting circuit boards.
[0010] Furthermore, a partition groove is provided between two adjacent positioning grooves.
[0011] Furthermore, two adjacent light-emitting circuit boards are connected by a cut-off protrusion, and the partition groove is located directly below the cut-off protrusion.
[0012] Furthermore, the limiting pin passes through at least two of the positioning slots.
[0013] Furthermore, the locking pin passes through at least two of the positioning slots.
[0014] Furthermore, the outer side wall of the fixture body is provided with a first insertion hole that communicates with the positioning groove, and the limiting pin is inserted into the first insertion hole.
[0015] Furthermore, the outer wall of the fixture body is provided with a second insertion hole that communicates with the positioning groove, and the locking pin is inserted into the second insertion hole.
[0016] Furthermore, the reference platform is provided with a positioning marker, which is arranged around the positioning groove and is consistent with the opening contour of the positioning groove.
[0017] Furthermore, the positioning marker is made of a reflective material.
[0018] The beneficial effects of this utility model are as follows: This utility model provides an innovative water meter PCB board welding fixture. By setting multiple slots in the positioning groove, it provides precise insertion positions for the transmitter and receiver boards, ensuring accurate relative positions between them and the light-emitting circuit board, thereby improving the assembly accuracy of the entire optical encoding device. The limiting pin cooperates with the limiting holes on the transmitter and receiver boards, effectively preventing displacement of the transmitter and receiver boards during welding, ensuring the stability of the welding process, and improving the welding quality. The locking pin passes through the locking holes of the transmitter and receiver boards, further fixing the position of the transmitter and receiver boards, preventing loosening due to vibration or other external forces, and enhancing the reliability of the entire device. Attached Figure Description
[0019] Figure 1 This is an exploded view of the PCB board welding fixture for the water meter according to Embodiment 1 of this utility model;
[0020] Figure 2 This is an exploded view of the PCB board welding fixture for the water meter according to Embodiment 2 of this utility model;
[0021] Label Explanation:
[0022] 1. Fixture body; 11. Reference platform; 12. Positioning groove; 121. Slot; 13. Partition groove; 14. First insertion hole; 15. Second insertion hole; 2. Limiting pin; 3. Locking pin; 4. Light-emitting circuit board; 5. Emitter board; 51. Limiting hole; 52. Locking hole; 6. Receiving board. Detailed Implementation
[0023] 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.
[0024] Please refer to Figure 1 as well as Figure 2 A PCB board soldering fixture for water meters, comprising:
[0025] The fixture body 1 has a reference platform 11 and a positioning groove 12. The positioning groove 12 is provided with a plurality of slots 121. The extending direction of the slots 121 is perpendicular to the plane on which the reference platform 11 is located. The reference platform 11 is used for laying the light-emitting circuit board 4 flat. The slots 121 are used for inserting the emitting board 5 or the receiving board 6. The emitting board 5 and the receiving board 6 are both provided with locking holes 52 and limiting holes 51.
[0026] The limiting pin 2 is located in the positioning groove 12 and abuts against the limiting hole 51 of the transmitting plate 5 and the receiving plate 6;
[0027] A locking pin 3 is provided in the positioning groove 12 and is used to pass through the locking hole 52 of the transmitting plate 5 and the receiving plate 6.
[0028] As can be seen from the above description, the beneficial effects of this utility model are as follows: by setting multiple slots 121 in the positioning groove 12, a precise insertion position is provided for the transmitter plate 5 and the receiver plate 6, ensuring that their relative positions with the light-emitting circuit board 4 are accurate, thereby improving the assembly accuracy of the entire optical encoding device; the limiting pin 2 cooperates with the limiting hole 51 on the transmitter plate 5 and the receiver plate 6, which can effectively prevent the transmitter plate 5 and the receiver plate 6 from shifting during the welding process, ensuring the stability of the welding process and improving the welding quality; the locking pin 3 passes through the locking hole 52 of the transmitter plate 5 and the receiver plate 6, further fixing the position of the transmitter plate 5 and the receiver plate 6, preventing loosening caused by vibration or other external forces, and enhancing the reliability of the entire device.
[0029] Furthermore, there are multiple light-emitting circuit boards 4, and the number of positioning slots 12 is equal to the number of light-emitting circuit boards 4.
[0030] As can be seen from the above description, by setting multiple positioning slots 12 corresponding one-to-one with multiple light-emitting circuit boards 4, multiple light-emitting circuit boards 4 and their corresponding emitting boards 5 and receiving boards 6 can be positioned and fixed simultaneously; this improves production efficiency, is suitable for batch processing, and ensures the installation accuracy and consistency of each light-emitting circuit board 4 and its related components.
[0031] Furthermore, a partition groove 13 is provided between two adjacent positioning grooves 12.
[0032] As described above, setting a partition groove 13 between two adjacent positioning grooves 12 can effectively isolate the heat transfer between adjacent positioning grooves 12, reduce deformation or positional displacement caused by heat during welding, improve welding quality, and ensure that the transmitter plate 5 and receiver plate 6 in each positioning groove 12 remain stable during welding.
[0033] Furthermore, two adjacent light-emitting circuit boards 4 are connected by a cutting protrusion, and the partition groove 13 is located directly below the cutting protrusion.
[0034] As described above, by placing the partition groove 13 directly below the cutting protrusion, the structural design of the fixture is optimized, enabling the partition groove 13 to better adapt to the cutting requirements of the light-emitting circuit board 4; ensuring that during the cutting process, the partition groove 13 can effectively isolate the interference between adjacent light-emitting circuit boards 4, further improving the positioning accuracy and welding quality.
[0035] Furthermore, the limiting pin 2 passes through at least two of the positioning slots 12.
[0036] As described above, the limiting pin 2 passes through at least two positioning slots 12, which can simultaneously limit multiple emitting boards 5 and receiving boards 6, preventing them from shifting laterally during the welding process; it improves the efficiency and stability of batch processing and ensures the installation accuracy of multiple light-emitting circuit boards 4 and their related components.
[0037] Furthermore, the locking pin 3 passes through at least two of the positioning slots 12.
[0038] As described above, the locking pin 3 penetrates at least two positioning slots 12, enabling simultaneous locking of multiple transmitter plates 5 and receiver plates 6, ensuring their stability during welding; improving the efficiency and reliability of batch processing, and avoiding welding quality problems caused by positional deviation.
[0039] Furthermore, the outer side wall of the fixture body is provided with a first insertion hole that communicates with the positioning groove, and the limiting pin is inserted into the first insertion hole.
[0040] As can be seen from the above description, by setting a first insertion hole with a connecting positioning groove on the outer wall of the fixture body, the installation and removal of the limiting pin is more convenient and quick, improving the ease of operation.
[0041] Furthermore, the outer wall of the fixture body is provided with a second insertion hole that communicates with the positioning groove, and the locking pin is inserted into the second insertion hole.
[0042] As can be seen from the above description, by providing a second insertion hole with a connecting positioning groove on the outer wall of the fixture body, the locking pin can more firmly penetrate the locking holes of the transmitter plate and the receiver plate, further enhancing the fixing effect of the transmitter plate and the receiver plate and preventing them from loosening during the welding process.
[0043] Furthermore, the reference platform 11 is provided with a positioning marker, which is arranged around the positioning groove 12 and is consistent with the opening contour of the positioning groove 12.
[0044] As described above, the positioning markers on the reference platform 11 help operators to quickly and accurately place the light-emitting circuit board 4 in the correct position, improving operational efficiency and positioning accuracy. The positioning markers surround the positioning groove 12 and are consistent with the opening contour of the positioning groove 12, further optimizing the positioning process and ensuring that the installation position of the light-emitting circuit board 4 is accurate.
[0045] Furthermore, the positioning marker is made of a reflective material.
[0046] As described above, the positioning marker uses reflective material, which can improve the visibility of the marker in low-light environments and further optimize the user experience; it ensures that operators can quickly identify the position of the positioning slot 12, thereby improving positioning efficiency and accuracy.
[0047] Please refer to Figure 1The first embodiment of this utility model is as follows: a PCB board welding fixture for a water meter, comprising a fixture body 1, a limiting pin 2, and a locking pin 3. The fixture body 1 has a reference platform 11 and a positioning groove 12. The positioning groove 12 is provided with a plurality of slots 121. The extending direction of the slots 121 is perpendicular to the plane where the reference platform 11 is located. The reference platform 11 is used for laying the light-emitting circuit board 4 flat. The slots 121 are used for inserting the emitting board 5 or the receiving board 6. The emitting board 5 and the receiving board 6 are both provided with locking holes 52 and limiting holes 51. The limiting pin 2 is disposed in the positioning groove 12 and abuts against the limiting holes 51 of the emitting board 5 and the receiving board 6. The locking pin 3 is disposed in the positioning groove 12 and is used to pass through the locking holes 52 of the emitting board 5 and the receiving board 6. Specifically, the light-emitting circuit board 4 is laid flat on the reference platform 11. The contact between the reference platform 11 and the light-emitting circuit board 4 ensures that the soldering surface of the light-emitting circuit board 4 is perpendicular to the emitting plate 5 and the receiving plate 6. Understandably, the vertical layout of the reference platform 11 and the positioning groove 12 of the fixture body 1 ensures the precise alignment of the light-emitting circuit board 4, the emitting plate 5 and the receiving plate 6, avoiding the problem of inaccurate light transmission counting caused by position deviation, thereby significantly improving the long-term reliability and counting accuracy of the optical encoding device. The emitting plate 5 and the receiving plate 6 are limited and locked by the limiting pin 2 and the locking pin 3, which not only enhances the stability of the emitting plate 5 and the receiving plate 6 during the soldering process, but also simplifies the operation process, improves production efficiency and reduces the soldering defect rate caused by position deviation.
[0048] Preferably, the extension direction of the limiting pin 2 is parallel to the plane where the reference platform 11 is located. Setting the extension direction of the limiting pin 2 to be parallel to the reference platform 11 ensures the stability and consistency of the limiting operation and avoids installation errors caused by directional deviation. It also improves the positioning accuracy of the transmitting plate 5 and the receiving plate 6, ensuring their vertical installation requirements with the light-emitting circuit board 4. Furthermore, the extension direction of the locking pin 3 is parallel to the plane where the reference platform 11 is located. Setting the extension direction of the locking pin 3 to be parallel to the reference platform 11 ensures the stability and consistency of the locking operation and avoids problems of insecure fixing caused by directional deviation. It also improves the fixing effect of the transmitting plate 5 and the receiving plate 6, ensuring their stability during the welding process.
[0049] Specifically, in this embodiment, both the limiting pin 2 and the locking pin 3 are pins. When the transmitting plate 5 and the receiving plate 6 are inserted into the positioning groove 12, the limiting pin 2 abuts against the bottom of the receiving plate 6 and the bottom of the transmitting plate 5, thereby achieving limitation; and the locking pin 3 passes through the positioning groove 12, the transmitting plate 5, and the receiving plate 6 to achieve locking. Of course, in some other embodiments, the limiting pin 2 and the locking pin 3 may not be parallel to the plane where the reference platform 11 is located, and the limiting pin 2 and the locking pin 3 may also be bolts, screws, etc., which will not be described in detail here.
[0050] Preferably, the outer wall of the fixture body 1 is provided with a first insertion hole 14 communicating with the positioning groove 12, and the limiting pin 2 is inserted into the first insertion hole 14. By providing a first insertion hole communicating with the positioning groove on the outer wall of the fixture body 1, the installation and removal of the limiting pin is more convenient and quick, improving the ease of operation. Specifically, the outer wall of the fixture body is provided with a second insertion hole 15 communicating with the positioning groove 12, and the locking pin is inserted into the second insertion hole. By providing a second insertion hole communicating with the positioning groove on the outer wall of the fixture body, the locking pin can more firmly penetrate the locking holes of the transmitter plate and the receiver plate, further enhancing the fixing effect of the transmitter plate and the receiver plate and preventing them from loosening during the welding process.
[0051] Optionally, the reference platform 11 may also be equipped with a positioning marker (not shown). The positioning marker is positioned around the positioning groove 12 and conforms to the opening contour of the positioning groove 12. The positioning marker helps the operator to quickly and accurately place the light-emitting circuit board 4 in the correct position, improving operating efficiency and positioning accuracy. The positioning marker surrounding the positioning groove 12 and conforming to the opening contour of the positioning groove 12 further optimizes the positioning process and ensures that the installation position of the light-emitting circuit board 4 is accurate. Furthermore, the positioning marker can be made of a reflective material. Using a reflective material can improve the visibility of the marker in low-light environments, further optimizing the operating experience. This ensures that the operator can quickly identify the position of the positioning groove 12, improving positioning efficiency and accuracy. In addition, the positioning marker can also be made of a material with warning colors such as yellow or red.
[0052] Please refer to Figure 2This second embodiment is a further improvement on the reference platform 11 based on the first embodiment. In this embodiment, there are multiple light-emitting circuit boards 4, and the number of positioning slots 12 is equal to the number of light-emitting circuit boards 4. By setting multiple positioning slots 12 to correspond one-to-one with multiple light-emitting circuit boards 4, multiple light-emitting circuit boards 4 and their corresponding emitting plates 5 and receiving plates 6 can be positioned and fixed simultaneously. This improves production efficiency, is suitable for batch processing, and ensures the installation accuracy and consistency of each light-emitting circuit board 4 and its related components. Specifically, a partition slot 13 is provided between two adjacent positioning slots 12. The partition slot 13 can effectively isolate the heat transfer between adjacent positioning slots 12, reducing deformation or positional displacement caused by heat during welding. This improves welding quality and ensures that the emitting plates 5 and receiving plates 6 in each positioning slot 12 remain stable during welding.
[0053] In detail, two adjacent light-emitting circuit boards 4 are connected by a cutting protrusion, and the partition groove 13 is located directly below the cutting protrusion. By placing the partition groove 13 directly below the cutting protrusion, the structural design of the fixture is optimized, allowing the partition groove 13 to better adapt to the cutting requirements of the light-emitting circuit board 4. This ensures that during the cutting process, the partition groove 13 can effectively isolate interference between adjacent light-emitting circuit boards 4, further improving positioning accuracy and welding quality. More specifically, the limiting pin 2 passes through at least two positioning grooves 12, which can simultaneously limit multiple emitting boards 5 and receiving boards 6, preventing lateral displacement during welding. This improves the efficiency and stability of batch processing and ensures the installation accuracy of multiple light-emitting circuit boards 4 and their related components. The locking pin 3 passes through at least two positioning grooves 12, thus simultaneously locking multiple emitting boards 5 and receiving boards 6, ensuring their stability during welding. This improves the efficiency and reliability of batch processing and avoids welding quality problems caused by positional deviation.
[0054] In summary, the water meter PCB board welding fixture provided by this utility model provides precise insertion positions for the transmitter and receiver boards by setting multiple slots in the positioning groove, ensuring accurate relative positions between them and the light-emitting circuit board, thereby improving the assembly accuracy of the entire optical encoding device. The limiting pin cooperates with the limiting holes on the transmitter and receiver boards to effectively prevent displacement of the transmitter and receiver boards during welding, ensuring the stability of the welding process and improving welding quality. The locking pin passes through the locking holes of the transmitter and receiver boards, further fixing the positions of the transmitter and receiver boards, preventing loosening due to vibration or other external forces, and enhancing the reliability of the entire device.
[0055] 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 PCB board welding jig of a water meter, characterized by, The utility model relates to a fixture body, comprising a reference platform and a positioning slot, a plurality of insertion slots are arranged in the positioning slot, the extension direction of the insertion slot is perpendicular to the plane where the reference platform is located, the reference platform is used for laying the light-emitting circuit board, the insertion slot is used for inserting the transmitting plate or the receiving plate, the transmitting plate and the receiving plate are provided with locking holes and limiting holes. A limiting bolt is arranged in the positioning slot and is in contact with the limiting hole of the transmitting plate and the receiving plate. A locking bolt is arranged in the positioning slot and is used for penetrating the locking hole of the transmitting plate and the receiving plate. The number of the light-emitting circuit boards is multiple, and the number of the positioning slots is equal to the number of the light-emitting circuit boards.
2. The PCB welding jig for a water meter according to claim 1, wherein A partition slot is arranged between two adjacent positioning slots.
3. The PCB welding jig for a water meter according to claim 2, wherein Two adjacent light-emitting circuit boards are connected through a cutting protrusion, and the partition slot is located directly below the cutting protrusion.
4. The PCB welding jig for a water meter according to claim 3, wherein The limiting bolt penetrates at least two positioning slots.
5. The PCB welding jig for water meter according to any one of claims 2-4, wherein, The locking bolt penetrates at least two positioning slots.
6. The PCB welding jig for water meter according to any one of claims 2-4, wherein The outer side wall of the fixture body is provided with a first insertion hole communicating with the positioning slot, and the limiting bolt is inserted into the first insertion hole.
7. The PCB board welding jig of the water meter according to claim 1, wherein, The outer side wall of the fixture body is provided with a second insertion hole communicating with the positioning slot, and the locking bolt is inserted into the second insertion hole.
8. The PCB board welding jig of the water meter according to claim 1, wherein, A positioning marker is arranged on the reference platform, the positioning marker is arranged around the positioning slot and is consistent with the opening profile of the positioning slot.
9. The PCB board welding jig of the water meter according to claim 1, wherein, The material of the positioning marker is a reflective material.
10. The PCB board welding jig of the water meter according to claim 9, wherein,