Intelligent measurement switch

Abstract

The application provides an intelligent measurement switch, which comprises a movable contact, a mutual inductor and a wiring board, the movable contact and the wiring board are connected through a wire, the wire passes through the mutual inductor, further comprises a wiring strip, the wire is connected with the wiring board through the wiring strip, the wiring board and the wiring strip form detachable connection, and the wiring strip can pass through the mutual inductor. The wiring strip is long and can pass through the mutual inductor, and the wiring strip and the wiring board form detachable connection, so that when the mutual inductor is disassembled, the mutual inductor on the wire can be disassembled by disassembling the wiring board and the wiring strip.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker technology, and more specifically to an intelligent measuring switch. Background Technology

[0002] Existing circuit breakers generally suffer from the problem that current transformers are inconvenient to remove.

[0003] For example, a measurable switch is disclosed in patent publication number CN 218730479 U. (Reference) Figure 1 As shown, the current transformer 23 is installed inside the base of the circuit breaker. The conductor 15 passes through the current transformer 23. One end of the conductor 15 is connected to the terminal block 14, and the other end of the conductor 15 is connected to the moving contact 131 of the contact system 13. Since neither the moving contact 131 nor the terminal block 14 can pass through the current transformer 23, the current transformer 23 is difficult to disassemble. Summary of the Invention

[0004] In view of the problems pointed out in the background art, the present invention proposes an intelligent measuring switch to solve the above-mentioned technical problems.

[0005] The technical solution of this invention is implemented as follows: A detachable current transformer structure includes a moving contact, a current transformer, and a terminal block. The moving contact and the terminal block are connected by a wire, which passes through the current transformer. The structure also includes a wiring strip, through which the wire is connected to the terminal block. The terminal block and the wiring strip form a detachable connection, and the wiring strip can pass through the current transformer.

[0006] The present invention is further configured such that the wiring strip has an approximately "Z" shaped structure, with one end of the wiring strip connected to the terminal block and the other end of the wiring strip extending into the current transformer.

[0007] A smart measuring switch includes a base, in which the aforementioned detachable current transformer structure is installed.

[0008] The present invention is further configured such that the base is provided with a mounting groove one for mounting a wiring board, and the bottom of the mounting groove one is provided with a mounting groove two for connecting wiring strips.

[0009] The present invention is further configured such that the terminal block is provided with a fixing hole, and the base is provided with a connection hole corresponding to the fixing hole.

[0010] The present invention is further configured such that the terminal block is provided with a second connection hole, the terminal strip is provided with a third connection hole corresponding to the second connection hole, the base is provided with a third mounting groove corresponding to the third connection hole, a nut is installed in the third mounting groove, and a screw passes through the second connection hole and the third connection hole and is connected to the nut.

[0011] The present invention is further configured such that a circuit board is provided on the bottom surface of the base, and a through hole is provided on the base to connect the second mounting groove and the circuit board. A power-connecting spring is provided in the through hole, and the two ends of the spring are respectively connected to the circuit board and the wiring strip.

[0012] By adopting the above technical solution, the connecting spring achieves electrical connection between the circuit board and the connector strip, and also applies elastic force to the connector strip, so that the connector strip and the connector board are in a stable contact state under the action of the elastic force, thus forming a stable electrical connection.

[0013] The present invention is further configured such that a power contact post is connected to the circuit board, the power contact post is located in a through hole, one end of a power contact spring is connected to the power contact post, and the other end of the power contact spring is connected to a wiring strip.

[0014] By adopting the above technical solution, since the circuit board is not made of conductive metal like the connector strip, and the contact area between the contact spring and the circuit board is small, there may be unstable or poor electrical contact between the contact spring and the circuit board. Therefore, by setting the contact post, a larger contact area is formed with the contact spring, thus forming a stable and good electrical contact.

[0015] The present invention is further configured such that the base is provided with a second through hole connecting the circuit board and the current transformer, and the current transformer passes through the second through hole and is inserted into the circuit board.

[0016] The present invention is further configured such that a mounting groove four for mounting a circuit board is provided on the bottom surface of the base, and a bottom plate for closing the mounting groove four is provided at the bottom of the base.

[0017] By adopting the above technical solution, the beneficial effects of the present invention are as follows: The detachable transformer structure and intelligent measuring switch provided by the present invention form a detachable connection with the terminal block through a long strip of wire that can pass through the middle of the transformer. In this way, when disassembling the transformer, it is only necessary to disassemble the terminal block and the wire strip to remove the transformer from the wire. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an existing circuit breaker.

[0020] Figure 2 This is a schematic diagram of the intelligent measurement switch of the present invention.

[0021] Figure 3 This is a schematic diagram showing the disassembled structure of the current transformer of the present invention.

[0022] Figure 4 This is a schematic diagram showing the disassembled base plate of the present invention.

[0023] Figure 5 This is an exploded view of the base of the present invention.

[0024] Figure 6 This is a schematic diagram of the connection between the current transformer and the circuit board of the present invention.

[0025] Figure 7 This is a schematic diagram of the structure of the base of the present invention. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] For reference as follows Figure 1-7 The present invention will be described as follows: Example 1: An intelligent measuring switch includes a base 6, which is a plastic housing. A current transformer structure is installed inside the base 6. This current transformer structure includes a moving contact 1, a current transformer 2, and a terminal block 3. The moving contact 1 and the terminal block 3 are connected by a wire 4, which passes through the current transformer 2. The moving contact 1 is connected to the contact system. The current transformer 2 is ring-shaped, and the terminal block 3 is a rectangular plate structure. In the prior art, because the contact system and the terminal block are relatively large, they cannot pass through the current transformer 2. This makes it difficult to disassemble the current transformer on the wire. Generally, the wire is welded to the moving contact and the terminal block, and it is troublesome to break the weld to disassemble it.

[0028] Therefore, this application makes the following improvements: it also includes a long strip of wiring 5, which has an approximately "Z" shaped structure. The wire 4 is connected to the terminal block 3 through the wiring 5. The terminal block 3 and the wiring 5 form a detachable connection. The wiring 5 can pass through the current transformer 2. One end of the wiring 5 is connected to the terminal block 3, and the other end of the wiring 5 extends into the current transformer 2. By adopting this technical solution, when disassembling the current transformer, only the terminal block and the wiring 5 need to be disassembled, and the current transformer 2 can be detached from the wires and the wiring 5.

[0029] The base 6 is provided with a mounting slot 7 for mounting the terminal block 3. The base is also provided with a slot for mounting the current transformer. The slot for mounting the current transformer is connected to the mounting slot 7. The current transformer is located between the terminal block and the moving contact. The bottom of the mounting slot 7 is provided with a mounting slot 8 for connecting the wiring strip 5. This means that the wiring strip is located on the lower side of the terminal block. Both the wiring strip and the terminal block are made of conductive metal. When they come into contact, they form an electrical connection.

[0030] The terminal block 3 has two fixing holes 9, and the base 6 has a connection hole 10 corresponding to the fixing holes 9. The screw is connected to the connection hole 10 and the fixing hole 9. The screw is threaded to the connection hole 10, fixing the terminal block 3 to the base, and forming a limiting fixation of the docking line.

[0031] The junction box 3 has a second connection hole 11, the connector strip 5 has a third connection hole 12 corresponding to the second connection hole 11, and the base 6 has a third mounting groove 13 corresponding to the third connection hole 12. The bottom of the third mounting groove 13 has a recessed hole. The third mounting groove 13 is a regular hexagon. A nut 14 is fitted inside the third mounting groove 13. A screw 15 passes through the second connection hole 11 and the third connection hole 12 and connects to the nut 14. The screw 15 and the nut 14 are threaded together. External wires or external electrical components are also connected to the junction box. In this way, when the screw 15 is tightened, the external wires, junction box, and connector strip can be fixedly connected.

[0032] A circuit board 16 is mounted on the bottom surface of the base 6, and a mounting groove 21 for mounting the circuit board 16 is provided on the bottom surface of the base 6. A base plate 22 closes the mounting groove 21 at the bottom of the base 6. A through hole 17 is provided on the base 6 to connect the mounting groove 28 and the circuit board 16. A power-connecting spring 18 is provided in the through hole 17, and both ends of the power-connecting spring 18 are connected to the circuit board 16 and the wiring strip 5, respectively. A power-connecting post 19 is connected to the circuit board 16 and is located in the through hole 17. One end of the power-connecting spring 18 is connected to the power-connecting post 19 and is sleeved on the power-connecting post 19. The other end of the power-connecting spring 18 is connected to the wiring strip 5. In the above technical solution, the wiring strip provides working power to the circuit board. The power-connecting spring 18 helps to form a stable electrical contact, and the power-connecting post can increase the electrical contact area between the circuit board and the power-connecting spring, forming a good electrical contact state.

[0033] The base 6 has a through hole 20 that connects the circuit board 16 and the current transformer 2. The current transformer 2 passes through the through hole 20 and is inserted into the circuit board 16. The current transformer 2 has a plug-in part 221 that is adapted to the through hole 20. With this technical solution, the current transformer 2 can be stably and firmly installed in the base and will not move easily.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intelligent measuring switch, comprising a base (6), characterized in that: The base (6) contains a detachable transformer structure, which includes a moving contact (1), a transformer (2), and a terminal block (3). The moving contact (1) and the terminal block (3) are connected by a wire (4), which passes through the transformer (2). The base also includes a wiring strip (5), which connects the wire (4) to the terminal block (3). The terminal block (3) and the wiring strip (5) form a detachable connection, and the wiring strip (5) can pass through the transformer (2). The wiring strip (5) has an approximately "Z" shaped structure, and one end of the wiring strip (5) is connected to the terminal block. The plate (3) is connected, and the other end of the wiring strip (5) extends into the transformer (2); the base (6) is provided with a mounting groove (7) for mounting the wiring plate (3), and the bottom of the mounting groove (7) is provided with a mounting groove (8) for connecting the wiring strip (5); the bottom surface of the base (6) is provided with a circuit board (16), and the base (6) is provided with a through hole (17) connecting the mounting groove (8) and the circuit board (16). The through hole (17) is provided with a power-connecting spring (18), and the two ends of the spring are connected to the circuit board (16) and the wiring strip (5) respectively.

2. The intelligent measuring switch according to claim 1, characterized in that: The terminal block (3) is provided with a fixing hole (9), and the base (6) is provided with a connection hole (10) corresponding to the fixing hole (9).

3. The intelligent measuring switch according to claim 1, characterized in that: The terminal block (3) is provided with a second connection hole (11), the terminal strip (5) is provided with a third connection hole (12) corresponding to the second connection hole (11), the base (6) is provided with a third mounting groove (13) corresponding to the third connection hole (12), a nut (14) is installed in the third mounting groove (13), and a screw (15) passes through the second connection hole (11) and the third connection hole (12) and is connected to the nut (14).

4. The intelligent measuring switch according to claim 1, characterized in that: The circuit board (16) is connected to a power terminal (19), which is located in the through hole (17). One end of the power connection spring (18) is connected to the power terminal (19), and the other end of the power connection spring (18) is connected to the wiring strip (5).

5. The intelligent measuring switch according to claim 1, characterized in that: The base (6) is provided with a through hole (20) connecting the circuit board (16) and the transformer (2). The transformer (2) passes through the through hole (20) and is inserted into the circuit board (16).

6. The intelligent measuring switch according to claim 1, characterized in that: The base (6) has a mounting slot 4 (21) for mounting the circuit board (16) on its bottom surface, and a bottom plate (22) for closing the mounting slot 4 (21) is provided at the bottom of the base (6).

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