Gas sensor binding post welding clamp for coal mine underground explosion-proof device
By designing a welding fixture that includes an operating table, circuit board support columns, and a positioning structure, the problem of poor positional accuracy during the welding process of gas sensors for explosion-proof devices in coal mines was solved, thereby improving the product qualification rate and ease of operation.
Patent Information
- Application Number
- CN202520500882.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-21
AI Technical Summary
In the welding process of existing gas sensors used in underground explosion-proof devices for coal mines, the poor positional accuracy of the carrier catalyst element and the circuit board leads to poor functionality and low pass rate.
A welding fixture was designed, comprising an operating table, a circuit board support column, a positioning structure, and a carrier catalytic element placement groove. The circuit board is fixed by inserting the positioning structure into the placement groove, ensuring the positional accuracy of the carrier catalytic element and the circuit board, and enabling convenient welding.
It effectively improved the positional accuracy of the circuit board and the carrier catalytic element, increased the product qualification rate, and simplified the operation process.
Smart Images
Figure CN223889111U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of tooling and fixtures for the production of gas sensors for explosion-proof devices in coal mines. It provides a welding fixture for the terminals of gas sensors for explosion-proof devices in coal mines that is easy to operate, effectively ensures positional accuracy, and improves product qualification rate. Background Technology
[0002] See appendix Figure 1 The existing gas sensor for underground explosion-proof devices in coal mines includes a circuit board (8) and a terminal (9) soldered to the circuit board (8). The lower end of the terminal (9) is soldered to the carrier catalyst element (10) used to detect methane concentration and output electrical signals. The current production method is for the worker to hold the circuit board (8) with one hand and place the lower end of the terminal (9) directly at the solder joint of the carrier catalyst element (10) for soldering. The whole process relies entirely on the worker's experience, resulting in poor positional accuracy between the top surface of the carrier catalyst element (10) and the bottom surface of the circuit board (8), which leads to poor functionality and low pass rate of the gas sensor. Utility Model Content
[0003] In view of this, the purpose of this utility model is to provide a welding fixture for the terminal block of a gas sensor for an explosion-proof device in a coal mine that is easy to operate, improves alignment accuracy, improves alignment efficiency, and improves product qualification rate.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] This utility model provides a welding fixture for gas sensor terminals of explosion-proof devices in coal mines, which includes an operating table, at least two circuit board support columns located on the operating table, a set of opposite side walls of the circuit board support columns are provided with placement slots, and a positioning structure is provided in the two placement slots between two adjacent circuit board support columns. The positioning structure and the two placement slots are integrally formed to form a circuit board support groove.
[0006] The space enclosed by the support columns of the two adjacent circuit boards and the top surface of the operating table forms a carrier catalyst element placement groove.
[0007] To facilitate the insertion of the positioning structure into the placement slot for positioning and fixing the circuit board, the above solution further includes: the positioning structure comprising two pads, the tail ends of which are integrated with the handle plate.
[0008] The beneficial effects of this utility model are:
[0009] The placement of the carrier catalyst element and the circuit board support groove can effectively ensure the positional accuracy between the bottom surface of the circuit board and the top surface of the carrier catalyst element. During the soldering operation, their positions remain unchanged, which effectively ensures positional accuracy and improves the product qualification rate, and is also convenient to operate. Attached Figure Description
[0010] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:
[0011] Figure 1 This is a schematic diagram of the structure of the gas sensor described in this utility model;
[0012] Figure 2 This is a schematic diagram of the structure of this utility model in use;
[0013] Figure 3 This is a schematic diagram of the positioning structure of this utility model;
[0014] Reference numerals in the attached drawings: 1. Operating table; 2. Circuit board support column; 3. Placement channel; 4. Positioning structure; 5. Carrier catalytic element placement slot; 6. Pad; 7. Handle plate; 8. Circuit board; 9. Terminal block; 10. Carrier catalytic element; 11. Circuit board support slot. Detailed Implementation
[0015] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.
[0017] like Figure 2-3As shown, this utility model provides a welding fixture for the terminal block of a gas sensor for an explosion-proof device in a coal mine, including an operating table 1, at least two circuit board support columns 2 located on the operating table 1, a set of opposite side walls of the circuit board support columns 2 are provided with placement slots 3, and a positioning structure 4 is provided in the two placement slots 3 between two adjacent circuit board support columns 2. The positioning structure 4 and the two placement slots 3 are integrally formed to form a circuit board support groove 11.
[0018] The space enclosed by the two adjacent circuit board support columns 2 and the top surface of the operating table 1 forms a carrier catalyst element placement groove 5. In this embodiment, the cross-section of the circuit board support column 2 is rectangular.
[0019] To facilitate the insertion of the positioning structure 4 into the placement slot 3 for positioning and fixing the circuit board, in the above embodiment, preferably, the positioning structure 4 includes two pads 6, the tail ends of which are integrated with the handle plate 7.
[0020] The loading and unloading process in the above embodiment is as follows: First, the worker inserts the circuit board 8 into the placement slot 3 with one hand, and with the other hand, holds the handle plate 7. Then, two pads 6 are inserted into the two placement slots 3 respectively, so that the top surface of the pads 6 is tightly against the bottom surface of the circuit board 8, thus fixing the circuit board 8 in the circuit board support slot 11. Next, the carrier catalyst element 10 is pushed into the carrier catalyst element placement slot 5, and the solder joints of the carrier catalyst element 10 are aligned with the lower end of the terminal block 9. Finally, soldering is performed using a soldering gun to complete the welding of the carrier catalyst element 10 and the circuit board 8 to form a gas sensor. After welding, the positioning structure 4 is removed, and then the gas sensor is removed. The entire process effectively ensures that the position between the bottom surface of the circuit board and the top surface of the carrier catalyst element remains unchanged.
[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A welding fixture for the terminal block of a gas sensor used in an explosion-proof device in a coal mine, characterized in that: Includes an operating table (1), at least two circuit board support columns (2) located on the operating table (1), a set of opposite side walls of the circuit board support column (2) are provided with placement slots (3), and a positioning structure (4) is provided in the two placement slots (3) between two adjacent circuit board support columns (2), and the positioning structure (4) and the two placement slots (3) are integrally formed to form a circuit board support groove (11). The space enclosed by the two adjacent circuit board support columns (2) and the top surface of the operating table (1) forms a carrier catalyst element placement groove (5).
2. The welding fixture for the terminal block of a gas sensor for an explosion-proof device in a coal mine according to claim 1, characterized in that: The positioning structure (4) includes two pads (6), the tail ends of which are integrated with the handle plate (7).