A power meter with firm wiring

Abstract

The utility model relates to electric energy meter technical field, and disclose a kind of electric energy meter of wiring stability, including watchcase and the concave cavity being opened in the one side of watchcase, the multiple terminal posts of same interval are fixedly connected in the concave cavity, and the side of terminal post is equipped with incoming line cavity, the terminal post is penetrated and is screwed with the compression screw, and the one end of compression screw is inserted into incoming line cavity, the side of watchcase is equipped with multiple thread holes of same interval, multiple the external thread ring matched with it is screwed in the thread hole, the side of external thread ring is annular array and is equipped with multiple fixing claws, and the other end of multiple fixing claws slightly converges to central axis direction.The utility model when wire is subjected to external force pulling, force is transferred to watchcase, avoid terminal stress, lead to the fracture of connecting end, realized the protection of wire connecting end, effectively locking and fixing to the wire of different thickness.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, and more specifically to an electricity meter with a secure wiring connection. Background Technology

[0002] As the core equipment for electricity metering in a power system, the stability of the wiring of electricity meters directly affects metering accuracy, equipment lifespan, and electricity safety. This is especially true as power networks develop towards greater intelligence, high reliability, and adaptability to complex environments.

[0003] A search revealed a Chinese patent with publication number CN219997163U, which discloses an electricity meter. In this device, after the wire is connected, the wire is squeezed and fixed by a rubber pad, effectively preventing the wire from being pulled and breaking the circuit. This effectively solves the problems of traditional electricity meters, which require climbing to check the meter reading and are prone to circuit breakage when the connection wire is pulled. However, the wire types are diverse, and this method is not secure when dealing with thin wires, resulting in low applicability. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a power meter with stable wiring to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a stable wiring power meter, including a meter casing and a cavity on one side of the meter casing. A plurality of terminal posts with equal spacing are fixedly connected in the cavity, and a wire inlet cavity is opened on one side of the terminal posts. A clamping screw is threaded through the terminal posts, and one end of the clamping screw extends into the wire inlet cavity. A plurality of threaded holes with equal spacing are opened on one side of the meter casing. A matching external threaded ring is threaded into each of the plurality of threaded holes. A plurality of fixing claws are arranged in a ring array on one side of the external threaded ring, and the other ends of the plurality of fixing claws are slightly converged towards the central axis. A tightening nut is threaded onto the outer circumference of the plurality of fixing claws.

[0006] As a further embodiment of this utility model, a limiting slide cavity is formed on the inner circumferential wall of the inlet cavity, and a clamping block for clamping the wire end is slidably connected in the limiting slide cavity. The bottom end of the clamping screw is rotatably connected to the upper surface of the clamping block through a bearing.

[0007] As a further embodiment of this utility model, a slightly concave groove is provided on the bottom inner wall of the limiting slide cavity, and the lower surface of the pressing block matches the shape of the groove.

[0008] As a further embodiment of this utility model, a terminal cover for protecting the terminal post is rotatably connected to one side inner wall of the cavity, and a limiting component for limiting the rotation position of the terminal cover is provided between the other end of the terminal cover and one side inner wall of the cavity.

[0009] As a further embodiment of this utility model, the limiting component includes a clearance groove formed on one side of the terminal cover, and an upwardly extending Z-shaped plastic plate is adhered to one side of the clearance groove. The lower surface of one end of the Z-shaped plastic plate rests on the upper part of one side edge of the recess.

[0010] As a further embodiment of this utility model, a positioning opening is provided on one side of the cavity, and a positioning block is provided on one side of the Z-shaped plastic plate. The positioning block is integrally formed with the Z-shaped plastic plate and is embedded in the positioning opening.

[0011] As a further improvement of this utility model, the number of multiple inlet cavities and multiple threaded holes are the same and their positions correspond one-to-one.

[0012] As a further embodiment of this invention, a watch cover is rotatably connected to one side of the watch case, and the watch cover completely covers the cavity.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model, by providing an external threaded ring, a fixing claw, and a tightening nut, transfers the tension to the casing when the wire is pulled by an external force, avoiding stress on the terminal and preventing the connection end from breaking. This achieves protection of the wire connection end and effectively locks and fixes wires of different thicknesses.

[0015] 2. This utility model, by providing a clamping block, applies uniform vertical pressure to the exposed copper wire of the conductor, avoiding local stress concentration caused by uneven tightening of the screw, which could lead to breakage of the copper wire. In addition, the groove can increase the fixing effect of the copper wire.

[0016] 3. This utility model protects the wiring terminals by providing terminal covers and meter covers, preventing electric shock and dust intrusion, thereby increasing the safety of the electricity meter. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0019] Figure 3 For the present utility model Figure 2 A schematic diagram of a localized explosion structure.

[0020] Figure 4This is a cross-sectional view of the terminal structure of this utility model.

[0021] Figure 5 This utility model Figure 2 A magnified structural diagram of part A.

[0022] The attached diagram is labeled as follows: 1. Case; 2. Cover; 3. Threaded hole; 4. External threaded ring; 5. Fixing claw; 6. Tightening nut; 7. Cavity; 8. Terminal post; 9. Terminal cover; 10. Clamping screw; 11. Cable inlet cavity; 1101. Limiting slide cavity; 12. Clamping block; 13. Groove; 14. Alternating groove; 15. Z-shaped plastic plate; 16. Positioning block; 17. Positioning port. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figures 1-5This utility model provides a securely wired electricity meter, including a meter housing 1 and a cavity 7 on one side of the meter housing 1. Multiple terminal posts 8 are fixedly connected to the cavity 7 by bolts at equal intervals. A wire inlet cavity 11 is provided on one side of each terminal post 8. A clamping screw 10 is threaded through the terminal post 8, with one end of the clamping screw 10 extending into the wire inlet cavity 11. Multiple threaded holes 3 are provided on one side of the meter housing 1 at equal intervals. Each threaded hole 3 is threaded with a matching external threaded ring 4. Multiple fixing claws 5 are arranged in a circular array on one side of the external threaded ring 4, with the other ends of the fixing claws 5 slightly converging towards the central axis. A tightening nut 6 is threaded onto the outer circumference of the fixing claws 5, which can be rotated and removed when wires need to be installed. Tighten the nut 6 and the external threaded ring 4 to disengage them from the threaded hole 3. Then, insert the nut 6 and the external threaded ring 4 into the wire to be connected. When inserting the external threaded ring 4, the fixing claw 5 faces outwards and the internal and external threaded ring 4 faces outwards. By providing the external threaded ring 4, the fixing claw 5, and the nut 6, when the wire is pulled by external force, the tension is transferred to the housing 1, preventing the terminal from being stressed and causing the connection end to break, thus achieving protection of the wire connection end. A limiting slide cavity 1101 is provided on the inner circumference of the wire inlet cavity 11. A clamping block 12 for clamping the wire end is slidably connected in the limiting slide cavity 1101. When it is necessary to loosen the wire, rotate the clamping screw 10 to move it upwards. As the clamping screw 10 moves upwards, it will drive the clamping block 12 at its bottom along the limiting slide cavity 1101. The sliding cavity 1101 moves upward until the clamping block 12 reaches the uppermost position of the limiting sliding cavity 1101. The bottom end of the clamping screw 10 is rotatably connected to the upper surface of the clamping block 12 via a bearing. By providing the clamping block 12, uniform vertical pressure is applied to the exposed copper wire of the conductor, avoiding local stress concentration caused by uneven tightening force of the screw, which could lead to breakage of the copper wire. The groove 13 further enhances the fixing effect of the copper wire. A slightly concave groove 13 is provided on the bottom inner wall of the limiting sliding cavity 1101. The lower surface of the clamping block 12 matches the shape of the groove 13. A watch cover 2 is rotatably connected to one side of the watch case 1, and the watch cover 2 completely covers the recessed cavity 7. By providing the terminal cover 9 and the watch cover 2, the wiring terminals are protected and prevented from contact. Electricity and dust intrusion increase the safety of the electricity meter. The number of multiple inlet cavities 11 and multiple threaded holes 3 are consistent and their positions correspond one-to-one. In use, first open the meter cover 2, then squeeze the Z-shaped plastic plate 15 to one side to deform it. After the positioning block 16 on it is completely disengaged from the positioning port 17, pull the Z-shaped plastic plate 15 upwards, causing one end with the terminal cover 9 to rotate 90 degrees along one side of the cavity 7. Then, insert the exposed end of the wire through the threaded hole 3 into the inlet cavity 11 on the terminal post 8. Next, rotate the clamping screw 10 to move it downwards, thereby moving the clamping block 12 downwards until the exposed end of the wire is clamped. Then, rotate the external threaded ring 4 on the wire into the threaded hole 3, and then rotate the tightening nut 6 onto the fixing claw 5.As the nut 6 rotates, the multiple retaining claws 5 converge to lock and secure the wire. The same process is repeated for the other wires.

[0025] In this utility model, a terminal cover 9 for protecting the terminal post 8 is rotatably connected to one side inner wall of the cavity 7. The terminal cover 9 is made of plastic. A limiting component is provided between the other end of the terminal cover 9 and one side inner wall of the cavity 7 to limit the rotation position of the terminal cover 9. The limiting component includes a relief groove 14 opened on one side of the terminal cover 9. A Z-shaped plastic plate 15 extending upward is bonded to one side of the relief groove 14. The lower surface of one end of the Z-shaped plastic plate 15 rests on the upper part of one side edge of the cavity 7. A positioning hole 17 is opened on one side of the cavity 7. A positioning block 16 is provided on one side of the Z-shaped plastic plate 15. The positioning block 16 is integrally formed with the Z-shaped plastic plate 15 and is embedded in the positioning hole 17. After the wire is installed, the terminal cover 9 is rotated in the opposite direction so that the positioning block 16 on the Z-shaped plastic plate 15 is re-embedded in the positioning hole 17. Finally, the cover 2 is closed.

[0026] The use of this utility model involves the following steps:

[0027] S1: When in use, first open the cover 2, then squeeze the Z-shaped plastic plate 15 to one side to deform it. When the positioning block 16 on it is completely separated from the positioning port 17, pull the Z-shaped plastic plate 15 upward, so that one end with the terminal cover 9 rotates along one side of the cavity 7, making it rotate 90 degrees.

[0028] S2: After opening the terminal cover 9, rotate the clamping screw 10 to move it upward. As the clamping screw 10 moves upward, it will drive the clamping block 12 at its bottom to move upward along the limiting slide cavity 1101. The clamping block 12 is ready when it moves to the top of the limiting slide cavity 1101.

[0029] S3: Then rotate and remove the loosening nut 6 and the external threaded ring 4 to disengage them from the threaded hole 3. Then, insert the loosening nut 6 and the external threaded ring 4 into the wires that need to be connected in sequence. When inserting the external threaded ring 4, the fixing claw 5 faces the inside and outside of the threaded ring 4 and the threaded ring 4 faces outward.

[0030] S4: Then, insert the exposed end of the wire through the threaded hole 3 into the inlet cavity 11 on the terminal post 8. Then, rotate the clamping screw 10 to move it downward, thereby moving the clamping block 12 downward until the exposed end of the wire is clamped. Then, rotate the external threaded ring 4 on the wire into the threaded hole 3. Then, rotate the tightening nut 6 onto the fixing claw 5. During the rotation of the tightening nut 6, multiple fixing claws 5 come together to lock and fix the wire. The same operation is performed on the other wires.

[0031] S5: After the wires are installed, rotate the terminal cover 9 in the opposite direction so that the positioning block 16 on the Z-shaped plastic plate 15 is re-embedded into the positioning port 17, and finally cover the cover 2.

[0032] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0033] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0034] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A securely wired electricity meter, comprising a casing (1) and a cavity (7) formed on one side of the casing (1), characterized in that: The cavity (7) is fixedly connected with a plurality of terminal posts (8) at equal intervals, and a wire inlet cavity (11) is provided on one side of the terminal post (8). A clamping screw (10) is threaded through the terminal post (8), and one end of the clamping screw (10) extends into the wire inlet cavity (11). A plurality of threaded holes (3) at equal intervals are provided on one side of the case (1). A matching external threaded ring (4) is threaded in each of the plurality of threaded holes (3). A plurality of fixing claws (5) are arranged in a ring array on one side of the external threaded ring (4), and the other ends of the plurality of fixing claws (5) are slightly converged towards the central axis. A tightening nut (6) is threaded on the outer circumference of the plurality of fixing claws (5).

2. The electricity meter with secure wiring according to claim 1, characterized in that: A limiting slide cavity (1101) is provided on the inner circumference of the inlet cavity (11). A clamping block (12) for clamping the wire end is slidably connected in the limiting slide cavity (1101). The bottom end of the clamping screw (10) is rotatably connected to the upper surface of the clamping block (12) through a bearing.

3. The electricity meter with a secure wiring according to claim 2, characterized in that: The bottom inner wall of the limiting slide cavity (1101) is provided with a slightly concave groove (13), and the lower surface of the pressing block (12) matches the shape of the groove (13).

4. The electricity meter with secure wiring according to claim 1, characterized in that: A terminal cover (9) for protecting the terminal post (8) is rotatably connected to one side of the inner wall of the cavity (7). A limiting component for limiting the rotation position of the terminal cover (9) is provided between the other end of the terminal cover (9) and one side of the inner wall of the cavity (7).

5. A power meter with secure wiring according to claim 4, characterized in that: The limiting component includes a relief groove (14) formed on one side of the terminal cover (9), and an upwardly extending Z-shaped plastic plate (15) is bonded to one side of the relief groove (14). The lower surface of one end of the Z-shaped plastic plate (15) rests on the upper position of one side edge of the cavity (7).

6. A power meter with secure wiring according to claim 5, characterized in that: A positioning opening (17) is provided on one side of the cavity (7), and a positioning block (16) is provided on one side of the Z-shaped plastic plate (15). The positioning block (16) is integrally formed with the Z-shaped plastic plate (15), and the positioning block (16) is embedded in the positioning opening (17).

7. A power meter with secure wiring according to claim 1, characterized in that: The number of multiple inlet cavities (11) and multiple threaded holes (3) are the same and their positions correspond one-to-one.

8. A power meter with secure wiring according to claim 1, characterized in that: The watch case (1) is rotatably connected to a watch cover (2) on one side, and the watch cover (2) completely covers the cavity (7).

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