Detachable mutual inductor structure and intelligent measuring switch

Abstract

The invention provides a detachable mutual inductor structure and an intelligent measuring switch, the detachable mutual inductor structure comprises a moving contact, a mutual inductor and a wiring board, the moving contact is connected with the wiring board through a wire, the wire penetrates through the mutual inductor, the detachable mutual inductor structure further comprises a wiring strip, the wire is connected with the wiring board through the wiring strip, the wiring board is detachably connected with the wiring strip, and the wiring strip can penetrate through the mutual inductor. According to the mutual inductor, the long-strip-shaped wiring strip capable of penetrating through the middle of the mutual inductor is detachably connected with the wiring board, and therefore when the mutual inductor is disassembled, only the wiring board and the wiring strip need to be disassembled, and then the mutual inductor on a wire can be disassembled.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a detachable transformer structure and an intelligent measuring switch. Background Art

[0002] The existing circuit breakers generally have the problem that the current transformer is inconvenient to disassemble.

[0003] For example, a switch that can only measure is disclosed in the patent publication number CN 218730479 U. Figure 1 As shown, the current transformer 23 is arranged in the base of the circuit breaker, and the wire 15 passes through the current transformer 23. One end of the wire 15 is connected to the terminal block 14, and the other end of the wire 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 response to the problems pointed out in the background technology, the present invention proposes a detachable transformer structure and an intelligent measuring switch to solve the above technical problems.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A detachable transformer structure includes a moving contact, a transformer, and a terminal block. The moving contact and the terminal block are connected by a wire that passes through the transformer. The structure also includes a terminal strip. The wire is connected to the terminal block via the terminal strip. The terminal block and the terminal strip form a detachable connection, and the terminal strip can pass through the transformer.

[0007] The present invention is further configured such that the terminal strip is approximately in a "Z"-shaped structure, one end of the terminal strip is connected to the terminal block, and the other end of the terminal strip extends into the mutual inductor.

[0008] An intelligent measuring switch comprises a base, in which the detachable mutual inductor structure is installed.

[0009] The present invention is further configured such that a first mounting groove for mounting a wiring board is provided on the base, and a second mounting groove for connecting a wiring strip is provided at the bottom of the first mounting groove.

[0010] The present invention is further configured such that a fixing hole is provided on the wiring board, and a connecting hole 1 corresponding to the fixing hole is provided on the base.

[0011] The present invention is further configured such that the terminal board 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 installation groove corresponding to the third connection hole, a nut is installed in the third installation groove, and the screw passes through the second connection hole and the third connection hole and is connected to the nut.

[0012] The present invention is further configured such that a circuit board is provided on the bottom surface of the base, a through hole one is provided on the base connecting the second mounting groove and the circuit board, a power spring is provided in the through hole one, and both ends of the spring are respectively connected to the circuit board and the terminal strip.

[0013] By adopting the above technical solution, one of the connecting springs realizes the electrical connection between the circuit board and the terminal strip, and the other connecting spring can apply elastic force to the connecting line, so that the terminal strip and the terminal board are in a stable contact state under the action of the elastic force, forming a stable electrical connection.

[0014] The present invention is further configured such that a power post is connected to the circuit board, the power post is located in through hole 1, one end of a power spring is connected to the power post, and the other end of the power spring is connected to the terminal strip.

[0015] By adopting the above technical solution, since the circuit board is not made of conductive metal like the terminal strip, and the contact area between the power spring and the circuit board is small, there may be a situation where the electrical contact between the power spring and the circuit board is unstable or poor. Therefore, a power post is provided to form a larger contact area with the power spring, thereby forming a stable and good electrical contact.

[0016] The present invention is further configured such that a second through hole connecting the circuit board and the mutual inductor is provided on the base, and the mutual inductor passes through the second through hole and is plugged into the circuit board.

[0017] 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.

[0018] By adopting the above technical solution, the beneficial effects of the present invention are:

[0019] 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 terminal strip that can pass through the middle of the transformer. In this way, when disassembling the transformer, only the terminal block and the terminal strip need to be disassembled to remove the transformer from the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 Schematic diagram of the structure of an existing circuit breaker.

[0022] Figure 2 Schematic diagram of the structure of the intelligent measuring switch of the present invention.

[0023] Figure 3 Schematic diagram of the decomposition of the mutual inductor structure of the present invention.

[0024] Figure 4 Schematic diagram of the decomposition of the base plate of the present invention.

[0025] Figure 5 This is a schematic diagram of the base of the present invention.

[0026] Figure 6 This is a structural diagram of the connection between the mutual inductor and the circuit board of the present invention.

[0027] Figure 7 It is a structural schematic diagram of the base of the present invention.

[0028] Figure 8 This is a real picture of the present invention. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] Reference as follows Figure 1-8 The present invention will be described:

[0031] Example 1: An intelligent measuring switch includes a base 6, which is a plastic housing. A transformer structure is mounted within the base 6. The transformer structure includes a movable contact 1, a transformer 2 (current transformer), and a terminal block 3. The movable contact 1 and the terminal block 3 are connected by a wire 4, which passes through the transformer 2. The movable contact 1 is connected to the contact system. The transformer 2 is annular, and the terminal block 3 is a rectangular plate structure. In the prior art, the contact system and the terminal block are relatively large and cannot pass through the transformer 2. This makes it difficult to remove the transformer from the wire. Typically, the wire is welded to the movable contact and the terminal block, making it difficult to remove the wire.

[0032] Therefore, the present application makes the following improvements: it also includes a long strip of terminal strip 5, which is approximately "Z"-shaped. The wire 4 is connected to the terminal block 3 through the terminal strip 5. The terminal block 3 and the terminal strip 5 form a detachable connection. The terminal strip 5 can pass through the transformer 2. One end of the terminal strip 5 is connected to the terminal block 3, and the other end of the terminal strip 5 extends into the transformer 2. By adopting this technical solution, when disassembling the transformer, only the terminal block and the terminal strip need to be disassembled, and the transformer 2 can be removed from the wires and the terminal strip.

[0033] The base 6 is provided with a mounting groove 7 for mounting the terminal block 3, and the base is also provided with a groove for mounting a transformer, which is connected to the mounting groove 7. The transformer is located between the terminal block and the moving contact. The bottom of the mounting groove 7 is provided with a mounting groove 2 8 for connecting the terminal strip 5, which is equivalent to the terminal strip being located on the lower side of the terminal block. The terminal strip and the terminal block are both made of conductive metal, and the two are in contact to form an electrical connection.

[0034] Two fixing holes 9 are provided on the terminal block 3, and a connecting hole 10 corresponding to the fixing hole 9 is provided on the base 6. The screws are connected to the connecting hole 10 and the fixing hole 9. The screws are threadedly connected to the connecting hole 10 to fix the terminal block 3 on the base, and at the same time form a restrictive fixation of the docking line.

[0035] A second connection hole 11 is provided on the terminal block 3, a third connection hole 12 corresponding to the second connection hole 11 is provided on the terminal strip 5, and a third mounting groove 13 corresponding to the third connection hole 12 is provided on the base 6. The bottom of the mounting groove 13 is provided with a concave hole. The mounting groove 13 is a regular hexagon. A nut 14 is adapted to be installed in the mounting groove 13. A screw 15 passes through the second connection hole 11 and the third connection hole 12 and is connected to the nut 14. The screw 15 is threadedly matched with the nut 14. An external wire or an external electrical component is also connected to the power board. In this way, when the screw 15 is tightened, the external wire, the terminal block, and the terminal strip can be fixedly connected.

[0036] A circuit board 16 is provided on the bottom surface of the base 6. A mounting groove 21 for mounting the circuit board 16 is also provided on the bottom surface of the base 6. A bottom plate 22 is provided at the bottom of the base 6 to close the mounting groove 21. A through hole 17 is provided on the base 6, connecting the mounting groove 28 and the circuit board 16. A power spring 18 is provided within the through hole 17. The two ends of the power spring 18 are connected to the circuit board 16 and the terminal strip 5, respectively. A power post 19 is connected to the circuit board 16. The power post 19 is located within the through hole 17. One end of the power spring 18 is connected to the power post 19. The power spring 18 is sleeved onto the power post 19, and the other end of the power spring 18 is connected to the terminal strip 5. In the above technical solution, the terminal strip provides operating power for the circuit board. The provision of the power spring 18 helps to establish stable electrical contact. The provision of the power post increases the electrical contact area between the circuit board and the power spring, thereby establishing a good electrical contact state.

[0037] The base 6 is provided with a second through hole 20 connecting the circuit board 16 and the mutual inductor 2. The mutual inductor 2 is plugged into the circuit board 16 through the second through hole 20. The mutual inductor 2 is provided with a plug-in portion 221 adapted to the second through hole 20. By adopting this technical solution, the mutual inductor 2 can be stably and firmly installed in the base and will not move easily.

[0038] 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 in the scope of protection of the present invention.

Claims

1. A detachable transformer structure, comprising a movable contact (1), a transformer (2), and a terminal block (3), wherein the movable contact (1) and the terminal block (3) are connected by a wire (4), and the wire (4) passes through the transformer (2), characterized in that: The invention also comprises a terminal strip (5), the wire (4) is connected to the terminal board (3) through the terminal strip (5), the terminal board (3) and the terminal strip (5) form a detachable connection, and the terminal strip (5) can pass through the mutual inductor (2).

2. A detachable mutual inductor structure according to claim 1, characterized in that: The terminal strip (5) is of approximately "Z"-shaped structure, one end of the terminal strip (5) is connected to the terminal board (3), and the other end of the terminal strip (5) extends into the mutual inductor (2).

3. An intelligent measuring switch, comprising a base (6), characterized in that: The detachable transformer structure according to claim 1 or 2 is installed in the base (6).

4. The detachable transformer structure and intelligent measuring switch according to claim 3, characterized in that: The base (6) is provided with a first installation groove (7) for installing the wiring board (3), and the bottom of the first installation groove (7) is provided with a second installation groove (8) for connecting the wiring strip (5).

5. The detachable transformer structure and intelligent measuring switch according to claim 4, characterized in that: The terminal block (3) is provided with a fixing hole (9), and the base (6) is provided with a connecting hole (10) corresponding to the fixing hole (9).

6. The detachable transformer structure and intelligent measuring switch according to claim 4, 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 installation groove (13) corresponding to the third connection hole (12), a nut (14) is installed in the third installation 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).

7. The detachable transformer structure and intelligent measuring switch according to claim 3, characterized in that: A circuit board (16) is provided on the bottom surface of the base (6), and a through hole (17) is provided on the base (6) for connecting the second mounting groove (8) and the circuit board (16). An electric spring (18) is provided in the through hole (17), and the two ends of the spring are respectively connected to the circuit board (16) and the terminal strip (5).

8. The detachable transformer structure and intelligent measuring switch according to claim 7, characterized in that: The circuit board (16) is connected to a power post (19), which is located in the first through hole (17). One end of the power spring (18) is connected to the power post (19), and the other end of the power spring (18) is connected to the terminal strip (5).

9. The detachable transformer structure and intelligent measuring switch according to claim 7, characterized in that: The base (6) is provided with a second through hole (20) for connecting the circuit board (16) and the mutual inductor (2), and the mutual inductor (2) passes through the second through hole (20) and is plugged into the circuit board (16).

10. The detachable transformer structure and intelligent measuring switch according to claim 7, characterized in that: The bottom surface of the base (6) is provided with a mounting groove four (21) for mounting the circuit board (16), and the bottom of the base (6) is provided with a bottom plate (22) for closing the mounting groove four (21).

Images