A terminal device and a power meter connector

Abstract

This utility model discloses a terminal device and an electricity meter connector. The terminal device includes a terminal base, a terminal body, a terminal cover, and a wire clamping component. The terminal base has a mounting cavity, and the terminal body is fixed on the terminal base. The terminal body includes a plug-in portion extending out of the terminal base and a wiring portion confined within the mounting cavity. The wire clamping component is disposed within the mounting cavity and can move up and down relative to the wiring portion, forming a wire clamping space between the wiring portion and the wire clamping component. A locking screw is screwed onto the wire clamping component, and a screw through hole is provided on the wall of the mounting cavity for the locking screw to pass through. The terminal cover is disposed on the terminal base, and a clearance hole is provided on the terminal cover corresponding to the head of the locking screw. The terminal base and the terminal cover cooperate to axially limit the locking screw and allow the locking screw to rotate. This utility model has an optimized structure, which has the advantages of convenient wiring, stable performance, and high cost performance, and can meet the requirements of electricity meter connectors for safety, reliability, and convenience.

Description

Technical Field

[0001] This utility model belongs to the field of power wiring technology, specifically relating to a terminal device and an electricity meter connector. Background Technology

[0002] In electricity metering equipment (such as electricity meters), reliable electrical connections are crucial for ensuring metering accuracy and equipment safety. Terminal devices, as key components connecting the internal circuitry of the electricity meter to external wires, directly affect the overall quality and long-term operational stability of the meter.

[0003] Currently, terminal devices used in electricity meter connectors typically include a terminal base, a terminal body, and a locking screw. The terminal body is fixed to the terminal base, and the locking screw engages with the threaded terminal body. During wiring, the insulation of the external conductor must be removed before the terminal (which has a mounting hole) is fixed on by riveting or welding. The locking screw is then passed through the mounting hole and tightened onto the terminal body to ensure a tight seal and achieve circuit continuity. The problem with this type of terminal device is that it adds the step of installing the terminal during on-site wiring, increasing the operational procedures and hindering rapid wiring. Utility Model Content

[0004] The purpose of this utility model is to provide a terminal device that enables quick wiring, and an energy meter connector using the terminal device.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] In a first aspect, this utility model provides a terminal device, including a terminal base, a terminal body, a terminal cover, and a wire clamping component; the terminal base has a mounting cavity, the terminal body is fixed on the terminal base, and the terminal body includes a plug-in portion extending out of the terminal base and a wiring portion confined within the mounting cavity; the wire clamping component is disposed within the mounting cavity and can move up and down relative to the wiring portion, and a wire clamping space is formed between the wiring portion and the wire clamping component; a wire locking screw is screwed onto the wire clamping component, and a screw through hole is provided on the wall of the mounting cavity for the wire locking screw to pass through; the terminal cover covers the terminal base, and a clearance hole is provided on the terminal cover corresponding to the head of the wire locking screw; the terminal base and the terminal cover cooperate to axially limit the wire locking screw and allow the wire locking screw to rotate.

[0007] Preferably, the head of the locking screw is provided with a radially protruding limiting ring portion, and a limiting gap is formed between the terminal base and the terminal cover, with the limiting ring portion confined within the limiting gap.

[0008] Preferably, the mounting cavity has an opening at one end, and the side wall of the mounting cavity opposite to the opening has a positioning through hole for the insertion part to pass through. The opening includes an inlet area and a mounting entrance area. The width of the mounting entrance area is greater than that of the inlet area. The inlet area is opposite to the clamping space. The clamping component is inserted into the mounting cavity through the mounting entrance area, and the terminal cover covers the mounting entrance area.

[0009] Preferably, the terminal block is provided with a support boss that provides upward support to the end of the wiring portion away from the plug portion; the end of the wiring portion away from the plug portion abuts against the terminal block or terminal cover.

[0010] Preferably, the terminal body is made of thin-walled copper tube, the plug part is hollow columnar with a supporting column inside, and the wiring part is flattened to form a double-layer structure.

[0011] Preferably, the cross-sectional shape of the insertion part is D-shaped, which includes a semi-circular arc-shaped face and a flat face opposite to the arc-shaped face.

[0012] Preferably, the end of the plug-in portion away from the wiring portion is a closed structure, and an axially extending vent groove is provided on the surface of the support column; the support column is a plastic rod or a wooden rod.

[0013] Preferably, the wall thickness of the thin-walled copper tube is 0.5-2 mm.

[0014] Secondly, this utility model provides an electricity meter connector, including a meter base and a terminal device mounted on the meter base, wherein the terminal device adopts any of the terminal devices described above.

[0015] Preferably, the terminal block is provided with a protruding mounting ear plate one, and the terminal cover is provided with a protruding mounting ear plate two. The mounting ear plate one and the mounting ear plate two are attached to each other and are provided with mounting holes at corresponding positions. The fixing screw passes through the mounting holes and is screwed to the base for fixation.

[0016] The advantages of this invention are as follows: The terminal device in this invention has a reasonable structural design. When the terminal device is used on the connector of the electricity meter, the plug-in part is plugged into the conductive hole on the electricity meter. After the insulation is removed from the end of the wire, it is directly inserted into the wire clamping space. By tightening the locking screw, the wire clamping space is reduced and the wire is clamped, so that the wire and the connection part are in close contact to achieve electrical conduction. This wiring method is very convenient. Moreover, since the wire clamping part 4 is moved closer to the connection part in a translational manner during the tightening of the locking screw, the wire will not be twisted or damaged during the wiring process. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art are briefly introduced below. Similar elements or parts in the drawings are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale.

[0018] Figure 1 This is a perspective view of the terminal device in this utility model;

[0019] Figure 2 for Figure 1 A perspective view of the terminal device shown from another angle;

[0020] Figure 3 for Figure 1 A front view of the terminal assembly shown;

[0021] Figure 4 For along Figure 3 A sectional view cut along line AA.

[0022] Figure 5 for Figure 4 A magnified view of a portion of point B in the middle;

[0023] Figure 6 This is a schematic diagram of the structure of the terminal body in this utility model;

[0024] Figure 7 This is an exploded view of the terminal device of this utility model;

[0025] Figure 8 This is a perspective view of the electricity meter connector in this utility model.

[0026] The attached figures are labeled as follows: 1. Terminal block; 11. Mounting cavity; 12. Screw hole; 13. Limiting gap; 14. Opening; 141. Cable inlet area; 142. Mounting inlet area; 15. Support boss; 16. Mounting ear plate one; 17. Positioning hole; 2. Terminal body; 21. Plug-in part; 211. Arc-shaped surface; 212. Flat part; 22. Wiring part; 23. Support column; 3. Terminal cover; 31. Clearance hole; 32. Mounting ear plate two; 4. Cable clamping component; 5. Cable locking screw; 51. Limiting ring part; 6. Base; 7. Wire; 8. Fixing screw. Detailed Implementation

[0027] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0028] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0029] Firstly, the structure of the terminal device in the embodiments of this utility model is as follows: Figures 1 to 7 As shown, it includes a terminal base 1, a terminal body 2, a terminal cover 3, and a wire clamping component 4; the terminal base 1 has a mounting cavity 11, the terminal body 2 is fixed on the terminal base 1, and the terminal body 2 includes a plug-in portion 21 extending out of the terminal base 1 and a wiring portion 22 confined within the mounting cavity 11; the wire clamping component 4 is disposed within the mounting cavity 11 and can move up and down relative to the wiring portion 22, forming a wire clamping space between the wiring portion 22 and the wire clamping component 4; a wire locking screw 5 is screwed onto the wire clamping component 4, and a screw through hole 12 for the wire locking screw 5 to pass through is provided on the cavity wall of the mounting cavity 11; the terminal cover 3 covers the terminal base 1, and a clearance hole 31 is provided on the terminal cover 3 corresponding to the head of the wire locking screw 5, the clearance hole 31... The function is to expose the upper end of the locking screw 5, making it easy to tighten the locking screw 5 with a screwdriver; the terminal seat 1 and the terminal cover 3 cooperate to form an axial limit on the locking screw 5 and allow the locking screw 5 to rotate; when this terminal device is used on the electricity meter connector, the plug part 21 is plugged into the conductive hole on the electricity meter, and the end of the wire is directly inserted into the wire clamping space after the insulation is removed. By tightening the locking screw 5, the wire clamping space is reduced and the wire 7 is clamped, so that the wire 7 is in close contact with the wiring part 22 to achieve electrical conduction; this wiring method is very convenient, and because the wire clamping part 4 moves closer to the wiring part 22 in a translational manner during the tightening of the locking screw 5, the wire will not be twisted or damaged during the wiring process.

[0030] In this embodiment, the wire clamping component 4 is rectangular and is fitted onto the wiring part 22. The wire locking screw 5 is screwed into the screw hole at the upper end of the wire clamping component 4. The resulting wire clamping space is relatively closed, which can provide good wrapping for the wire 7 and improve the reliability of the wiring. In actual operation, the wire clamping component 4 can also be set to other shapes.

[0031] Combination Figure 4 and Figure 5 As shown, in order to achieve axial (i.e.,) adjustment of the locking screw 5 Figure 5 The locking screw 5 is limited in the vertical direction. A limiting ring 51 protruding radially is provided on the outer periphery of the head of the locking screw 5. A limiting gap 13 is formed between the terminal seat 1 and the terminal cover 3. The limiting ring 51 is limited within the limiting gap 13, so the locking screw 5 cannot move axially due to the limitation of the limiting gap 13, but can only be rotated. This solution is simple, feasible and easy to implement.

[0032] Combination Figure 2 , Figure 4 and Figure 7 As shown, the mounting cavity 11 has an opening 14 on its side end. A positioning through hole 17 for the insertion part 21 to pass through is provided on the side wall of the mounting cavity 11 opposite to the opening 14. The opening 14 includes an inlet area 141 and a mounting entrance area 142. The width of the mounting entrance area 142 is greater than that of the inlet area 141. The inlet area 141 is opposite to the clamping space. The clamping component 4 is inserted into the mounting cavity 11 through the mounting entrance area 142. The terminal cover 3 covers the mounting entrance area 142. With this structure, during assembly, the terminal body 1 and... The wire clamping component 4 is inserted into the mounting cavity 11 through the mounting inlet area 12, and the plug-in part 21 is inserted through the positioning through hole 17. The end of the wiring part 22 near the plug-in part 21 is stopped at the inner port of the positioning through hole 17. Since the width of the inlet area 141 is small, it can block the wire clamping component 4 and prevent the wire clamping component 4 from falling off from the inlet area 141. Since the terminal cover 3 blocks the mounting inlet area 142, it can also prevent the wire clamping component 4 from falling off from the mounting inlet area 142. When the wire 7 is connected, the end of the wire 7 is accurately guided into the wire clamping space through the inlet area 141.

[0033] Furthermore, in order to enhance the positioning of the terminal body 2, the terminal base 1 is provided with a support boss 15 that provides upward support to the end of the wiring part 22 away from the plug-in part 21. The support boss 15 provides additional support for the wiring part 22. When the terminal body 1 is assembled in place, the end of the wiring part 22 away from the plug-in part 21 abuts against the terminal cover 3, thereby forming a more reliable positioning of the terminal body 2 and facilitating the adaptation of the plug-in part 21 to the electricity meter.

[0034] Combination Figure 4 and Figure 6 As shown, in order to reduce the manufacturing cost of the terminal body 2, the terminal body 2 is made of thin-walled copper tube (the wall thickness of the thin-walled copper tube is 0.5-2mm, such as 0.5mm, 0.8mm, 1.2mm, 1.6mm or 2mm). The thin-walled copper tube can be made by stretching process. The plug part 21 is a hollow column with a support column 23 inside. The wiring part 22 is flattened to form a double-layer structure. Using thin-walled copper tube to manufacture the terminal body 2 can reduce the production cost while ensuring the conductivity. The support column 23 is set inside the plug part 21 to form effective support and enhance the compressive deformation resistance of the plug part 21.

[0035] Furthermore, see Figure 6As shown, the plug-in portion 21 has a D-shaped cross-section, which includes a semi-circular arc-shaped surface 211 and a flat surface 212 opposite to the arc-shaped surface 211. When the terminal device is used, the plug-in portion 21 is inserted into the conductive socket of the electricity meter. After tightening the clamping screw on the side wall of the conductive socket, its inner end directly abuts against the flat surface 212 to ensure the locking effect of the plug-in portion 21. At the same time, the arc-shaped surface 211 makes reliable contact with the inner wall of the conductive socket to ensure the performance of the device.

[0036] Continue reading Figure 6 As shown, the end of the plug-in part 21 away from the wiring part 22 is a closed structure. An axially extending vent groove is provided on the surface of the support column 23. During the process of inserting the support column 23 into the thin-walled copper tube, the air in the thin-walled copper tube can be discharged through the vent groove, avoiding the air not being able to be discharged and thus preventing the support column 23 from being inserted into place. The support column 23 can be made of plastic rod or wooden rod, which helps to reduce manufacturing costs.

[0037] Secondly, the structure of the electricity meter connector in the embodiments of this utility model is shown below. Figure 8 As shown, the device includes a base 6 and a terminal device mounted on the base 6. The terminal device is the same as the terminal device in the above embodiment. The electricity meter connector has all the advantages of the terminal device in this embodiment, which will not be elaborated here.

[0038] Furthermore, in order to reliably fix the terminal device on the base 6, the terminal base 1 is provided with a protruding mounting ear plate 16, and the terminal cover 3 is provided with a protruding mounting ear plate 32. The mounting ear plate 16 and the mounting ear plate 32 are attached to each other and have mounting holes at corresponding positions. The fixing screw 8 passes through the mounting hole and is screwed to the base 6 for fixation.

[0039] For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, these obvious variations or modifications derived from the essential spirit of this invention still fall within the protection scope of this invention.

Claims

1. A terminal device, characterized by comprising: The device includes a terminal base (1), a terminal body (2), a terminal cover (3), and a wire clamping component (4). The terminal base (1) has a mounting cavity (11), and the terminal body (2) is fixed to the terminal base (1). The terminal body (2) includes a plug-in portion (21) extending out of the terminal base (1) and a wiring portion (22) confined within the mounting cavity (11). The wire clamping component (4) is located within the mounting cavity (11) and can move up and down relative to the wiring portion (22). The wiring portion (22) and the clamping component (4) are connected together. A wire clamping space is formed between the wire components (4); a wire clamping screw (5) is screwed onto the wire clamping component (4), and a screw through hole (12) is provided on the wall of the mounting cavity (11) for the wire clamping screw (5) to pass through; the terminal cover (3) covers the terminal seat (1), and a clearance hole (31) is provided on the terminal cover (3) corresponding to the head of the wire clamping screw (5). The terminal seat (1) and the terminal cover (3) cooperate to form an axial limit on the wire clamping screw (5) and allow the wire clamping screw (5) to rotate.

2. The terminal device according to claim 1, characterized in that The head of the locking screw (5) is provided with a radially protruding limiting ring (51), and a limiting gap (13) is formed between the terminal seat (1) and the terminal cover (3), and the limiting ring (51) is limited within the limiting gap (13).

3. The terminal device of claim 1, wherein The mounting cavity (11) has an opening (14) on its side end. The mounting cavity (11) has a positioning through hole (17) on its side wall opposite to the opening (14) for the insertion part (21) to pass through. The opening (14) includes an inlet area (141) and a loading area (142). The width of the loading area (142) is greater than that of the inlet area (141). The inlet area (141) is opposite to the clamping space. The clamping component (4) is inserted into the mounting cavity (11) through the loading area (142). The terminal cover (3) covers the loading area (142).

4. The terminal device according to claim 1, characterized in that, The terminal block (1) is provided with a support boss (15) that provides upward support to the end of the wiring part (22) away from the plug-in part (21); the end of the wiring part (22) away from the plug-in part (21) abuts against the terminal block (1) or the terminal cover (3).

5. The terminal device of claim 1, wherein The terminal body (2) is made of thin-walled copper tube, the plug part (21) is a hollow column with a supporting column (23) inside, and the wiring part (22) is flattened to form a double-layer structure.

6. The terminal device of claim 5, wherein The plug portion (21) has a D-shaped cross-section, which includes a semi-circular arc-shaped face (211) and a flat face (212) opposite to the arc-shaped face (211).

7. The terminal device of claim 5, wherein The end of the plug (21) away from the wiring part (22) is a closed structure, and an axially extending exhaust groove is provided on the surface of the support column (23); the support column (23) is a plastic rod or a wooden rod.

8. The terminal device of claim 5, wherein The wall thickness of the thin-walled copper tube is 0.5-2mm.

9. An electricity meter connector comprising a meter base (6) and a terminal arrangement mounted on the meter base (6), characterized in that, The terminal device is the terminal device according to any one of claims 1 to 8.

10. The electricity meter connector according to claim 9, characterized in that, The terminal block (1) is provided with a protruding mounting ear plate one (16), and the terminal cover (3) is provided with a protruding mounting ear plate two (32). The mounting ear plate one (16) and the mounting ear plate two (32) are attached to each other and mounting holes are provided at corresponding positions. The fixing screw (8) passes through the mounting hole and is screwed to the base (6) for fixation.

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