Wire harness-free temperature sensing terminal device for external wire of electric energy meter

Abstract

The utility model discloses a wireless harness temperature sensing terminal device for external wiring of an electric energy meter, comprising a mutual inductor which is provided with a first binding post, a sampling welding pin and a coil leading-out welding pin; the relay is provided with a second binding post and a control welding pin; the main terminal is provided with a positioning boss, a positioning column, a buckle and a round hole; the terminal strip is provided with a positioning boss limiting hole and a welding pin limiting hole; and a temperature sensing circuit board and an adaptive assembly. The optimized wire harness-free temperature sensing terminal structure can realize wave soldering with a circuit board, reduce manual soldering, adapt to automatic production, improve assembly efficiency and reliable connection, reduce electrical fault effects, improve copper column butt joint adaptability, meet butt joint use of copper columns of different specifications, and improve the product quality. And the installation flexibility is improved.

Description

Technical Field

[0001] This utility model relates to the field of terminal button technology, specifically a wireless beam temperature sensing terminal button device for external wiring of an electricity meter. Background Technology

[0002] An electricity meter is an instrument used to measure electrical energy, also known as a kilowatt-hour meter, fire meter, or kilowatt-hour meter. It refers to instruments that measure various electrical quantities. During the production of an electricity meter, various components are soldered together. In current technology, the main electrical components of the electricity meter, relays and current transformers, are connected to the terminal blocks using resistance welding. The connection to the control circuit board has also been achieved using wireless soldering. This wireless connection offers good consistency, is suitable for automated production, improves production efficiency, enhances the meter's voltage resistance and conductivity reliability, and ensures the meter's electrical performance. However, in current technology, the copper posts have low compatibility with different hole sizes during insertion, making them unsuitable for use with copper posts of varying diameters. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a wireless beam temperature sensing terminal device for external wiring of an electricity meter. The structure of the wireless beam temperature sensing terminal is optimized, which enables wave soldering with the circuit board, reduces manual soldering, adapts to automated production, improves assembly efficiency and connection reliability, and reduces electrical faults. At the same time, it can also improve the compatibility of copper post docking, meet the docking needs of copper post docking of different specifications, and improve installation flexibility.

[0004] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: a wireless beam temperature sensing terminal device for external wiring of an electricity meter, comprising:

[0005] A current transformer, wherein the current transformer is provided with a first terminal, a sampling welding pin and a coil lead-out welding pin;

[0006] A relay, wherein a second terminal and a control solder pin are provided on the relay;

[0007] The main terminal is provided with a positioning boss, a positioning post, a buckle and a round hole;

[0008] Terminal block, wherein the terminal block is provided with positioning boss limiting hole and welding pin limiting hole;

[0009] A temperature-sensing circuit board, wherein positioning holes, snap-fit ​​holes, thermal conductive adhesive for the temperature-sensing chip, and motherboard pins are provided on the temperature-sensing circuit board;

[0010] The adapter component includes a circular frame disposed at the circular hole position, an annular outer frame communicating with the circular frame, a cylinder fixed to the bottom surface of the annular outer frame, a threaded hole formed on the surface of the annular outer frame, and a circular opening formed on the surface of the main terminal.

[0011] In a preferred embodiment of the wireless beam temperature sensing terminal device for external wiring of an electricity meter according to this utility model, the relay is welded to the second terminal, and the current transformer is welded to the first terminal.

[0012] In a preferred embodiment of the wireless beam temperature sensing terminal device for external wiring of an electricity meter as described in this utility model, the current transformer and the relay are respectively pressed into the main terminal to obtain the main terminal assembly.

[0013] As a preferred embodiment of the wireless beam temperature sensing terminal device for external wiring of an electricity meter described in this utility model, the main terminal is assembled with the terminal block through a positioning boss, and the sampling welding needle and the two coil lead-out welding needles pass through the three welding needle limiting holes at corresponding positions.

[0014] As a preferred embodiment of the wireless beam temperature sensing terminal device for external wiring of an electricity meter according to the present invention, the main terminal assembly and the terminal block are assembled together to form a terminal assembly, and the terminal assembly is assembled with the temperature sensing circuit board.

[0015] In a preferred embodiment of the wireless beam temperature sensing terminal device for external wiring of an electricity meter as described in this utility model, the positioning hole on the temperature sensing circuit board is inserted into the positioning post on the main terminal, and the buckle on the main terminal is also locked into the buckle hole on the temperature sensing circuit board.

[0016] As a preferred embodiment of the wireless beam temperature sensing terminal device for external wiring of an electricity meter according to the present invention, the temperature sensing chip thermal adhesive includes two temperature sensing chips, thermal adhesive A, and thermal adhesive B.

[0017] The first terminal block is specifically copper terminal block No. 3 and copper terminal block No. 4, and the second terminal block is specifically copper terminal block No. 1 and copper terminal block No. 2.

[0018] As a preferred embodiment of the wireless beam temperature sensing terminal device for external wiring of an electricity meter according to the present invention, the adapter component further includes a circular groove formed in the circular opening.

[0019] As a preferred embodiment of the wireless beam temperature sensing terminal device for external wiring of an electricity meter according to the present invention, it further includes a main control circuit board, wherein positioning holes are provided on the main control circuit board.

[0020] The terminal block is provided with positioning posts.

[0021] Compared with the prior art, the advantages of this utility model are:

[0022] I. The structure of the wireless beam temperature sensing terminal is optimized, which enables wave soldering with circuit boards, reduces manual soldering, adapts to automated production, improves assembly efficiency and connection reliability, and reduces electrical faults. At the same time, it can also improve the compatibility of copper pillar docking, meet the needs of copper pillar docking of different specifications, and improve installation flexibility.

[0023] Second, the circular groove allows welding molten metal to drip into the cylinder, ensuring full contact and preventing unstable welding that could lead to detachment. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0025] Figure 1 This is a structural diagram of the current transformer in this utility model;

[0026] Figure 2 This is a structural diagram of the relay of this utility model;

[0027] Figure 3 This is a structural diagram of the main terminal of this utility model;

[0028] Figure 4 This is a structural diagram of the positioning column of this utility model;

[0029] Figure 5 This is a structural diagram of the terminal block of this utility model;

[0030] Figure 6 This is a structural diagram of the temperature-sensing circuit board of this utility model;

[0031] Figure 7 This is a structural diagram of the main control circuit board of this utility model;

[0032] Figure 8 This is a schematic diagram of the assembled main control circuit board of this utility model;

[0033] Figure 9 This is a schematic diagram of the structure of the adapter component of this utility model;

[0034] Figure 10 This is a structural diagram showing the location of the circular groove in this utility model.

[0035] In the diagram: 1. Current transformer; 11. First terminal; 12. Sampling pin; 13. Coil lead-out pin; 2. Relay; 21. Second terminal; 22. Control pin; 3. Main terminal; 31. Positioning boss; 32. Positioning post; 33. Snap-fit; 34. Round hole; 4. Terminal block; 41. Positioning boss limiting hole; 42. Pin limiting hole; 5. Temperature sensing circuit board; 51. Positioning hole; 52. Snap-fit ​​hole; 53. Thermal conductive adhesive for temperature sensing chip; 54. Main board pin; 61. Circular frame; 62. Annular outer frame; 63. Cylindrical; 64. Threaded hole; 65. Round opening; 66. Round groove. Detailed Implementation

[0036] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0037] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual proportions. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0040] This utility model provides a wireless beam temperature sensing terminal device for external wiring of an electricity meter. The structure of the wireless beam temperature sensing terminal is optimized, enabling wave soldering with the circuit board, reducing manual soldering, adapting to automated production, improving assembly efficiency and connection reliability, and reducing electrical faults. At the same time, it can also improve the compatibility of copper post connection, meet the needs of copper post connection of different specifications, and improve installation flexibility.

[0041] Figures 1-10 The diagram shown is an overall structural schematic of one embodiment of a wireless beam temperature sensing terminal device for external wiring of an electricity meter according to this utility model. Please refer to [link / reference]. Figures 1-10 The main structure of this embodiment includes: a current transformer 1, which is provided with a first terminal 11, a sampling welding pin 12 and a coil lead-out welding pin 13;

[0042] Relay 2, which is provided with a second terminal 21 and a control solder pin 22;

[0043] The main terminal 3 is provided with a positioning boss 31, a positioning post 32, a buckle 33 and a round hole 34;

[0044] Terminal block 4, which is provided with positioning boss limiting hole 41 and welding pin limiting hole 42;

[0045] Temperature sensing circuit board 5, which is provided with positioning hole 51, snap-fit ​​hole 52, thermal conductive adhesive for temperature sensing chip 53 and motherboard pin 54.

[0046] The adapter component includes a circular frame 61 located at the circular hole 34, an annular outer frame 62 communicating with the circular frame 61, a cylinder 63 fixed to the bottom surface of the annular outer frame 62, a threaded hole 64 opened on the surface of the annular outer frame 62, and a circular opening 65 opened on the surface of the main terminal 3.

[0047] In practical use, the first step is to weld relay 2 to copper pillars 1 and 2, and transformer 1 to copper pillars 3 and 4. Then, copper pillars 1 and 2 and copper pillars 3 and 4 are pressed into the corresponding round holes 34 on the main terminal 5. During the entire welding process, welding fixtures are used to maintain their relative positions.

[0048] In the second step, the main terminal 3 is assembled with the terminal block 4 through the positioning boss 31. At the same time, the sampling welding pin 12 and the two coil lead-out welding pins 13 of the current transformer 1 pass through the three welding pin limiting holes 42 at the corresponding positions. This ensures the relative position of the three welding pins on the current transformer 1, which is convenient for the subsequent installation of the temperature sensing circuit board 5.

[0049] The third step is to insert the positioning hole 51 on the temperature sensing circuit board 5 into the positioning post 32 on the main terminal 3. At the same time as insertion, the buckle 33 of the main terminal 3 also enters the buckle hole 52 of the temperature sensing circuit board 5. The buckle hole 52 causes the buckle to deform and press the temperature sensing circuit board 5. The temperature sensing circuit board 5 has two temperature sensing chips and thermally conductive rubber "A and B". At the same time as the circuit board is pressed, the thermally conductive rubber on "A and B" deforms and presses the terminal "2" on the relay 2 and the terminal "3" on the current transformer 1 respectively, realizing the one-time installation of the temperature sensing circuit board 5, thereby obtaining the wireless connection terminal device.

[0050] Furthermore, it also includes a main control circuit board 7, which has positioning holes 71.

[0051] The terminal block 4 is provided with a positioning post 43;

[0052] In practical use, the two positioning holes 71 of the main control circuit board 7 are aligned with the two positioning posts 43 of the terminal block 4 as guides, and all the soldering pins are inserted. Because each step of the above operation is precisely positioned, the insertion of the main control circuit board 7 is relatively smooth in actual production. Then, a special fixture is used to perform wave soldering, achieving one-time soldering of all the soldering pins, which greatly improves production efficiency and welding reliability, and saves manual soldering costs. It has broad application prospects for expanding production and realizing automation.

[0053] Furthermore, the adapter component includes a circular frame 61 disposed at the circular hole 34, an annular outer frame 62 communicating with the circular frame 61, a cylinder 63 fixed to the bottom surface of the annular outer frame 62, a threaded hole 64 opened on the surface of the annular outer frame 62, and a circular opening 65 opened on the surface of the main terminal 3.

[0054] In practical use, the circular frame 61 and the circular hole 34 are connected to each other, and the cylinder 63 is inserted into the corresponding circular opening 65. Then, the cylinder 63 is spot welded. At this time, the diameter of the annular outer frame 62 is larger than the diameter of the circular frame 61. Therefore, this structural design can be adapted to the connection of copper cylinders of different diameters, improving adaptability.

[0055] Furthermore, the adapter component also includes a circular slot 66 formed within the circular opening 65;

[0056] In practical use, spot welding of cylinder 62 should be avoided. The welding material will cover the pin position of cylinder 62, which can easily cause cylinder 62 to fall off. By opening a circular groove 66, the welding liquid drips into the circular groove 66 during spot welding, increasing the contact area with cylinder 62. This avoids the problem of cylinder 63 falling off and ensures the stability of the copper column connection.

[0057] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

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