Improved molded case circuit breaker

Abstract

The utility model discloses an improved molded case circuit breaker, which comprises a base, a mounting cavity is arranged in the base, a plurality of partition plates are fixedly connected in the mounting cavity, a chamber is formed among the partition plates, an electromagnetic tripping mechanism is rotatably connected in the chamber, a fixing plate is arranged above the surface of each partition plate, and the fixing plates are fixedly connected with the partition plates. A microswitch is fixedly installed at the position, opposite to the electromagnetic tripping mechanism, of the surface of the top of the fixing plate, the microswitch makes movable contact with the electromagnetic tripping mechanism, a mutual inductor is arranged in the mounting cavity and located right in front of the electromagnetic tripping mechanism, and a circuit board is installed in the mounting cavity and located at the top of the mutual inductor. The circuit board is electrically connected with the microswitch, the top of the circuit board is fixedly connected with an indicator board through a connecting column, and the indicator board is electrically connected with the circuit board. In combination with the structural design of the utility model, the electromagnetic tripping mechanism rotates and touches the microswitch, so that the indicating lamp is turned on and turned off, and the stability is stronger.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of molded case circuit breaker, concretely to an improved molded case circuit breaker. BACKGROUND

[0002] Molded case circuit breaker is widely used in industry and agriculture, transportation, mine, civil building and national defense department, plays a great role to power transmission and distribution and motor protection, is a product with large use quantity and wide use in low-voltage electrical apparatus. Molded case circuit breaker is a switching device that can close, carry and open the current under normal circuit conditions, and can close, carry and open the current under abnormal circuit conditions (including short-circuit conditions) within a specified time. Molded case circuit breaker can be used to distribute electric energy, infrequently start asynchronous motor, and protect power supply line and motor, and can automatically cut off the circuit when serious overload or short-circuit and under-voltage fault occurs. The structure design of the opening and closing indication device on the existing molded case circuit breaker is unreasonable, resulting in the defects of unclear and inaccurate indication of the opening and closing indication device. SUMMARY

[0003] The utility model discloses a kind of improved molded case circuit breaker, to solve the structure design of the opening and closing indication device on the existing molded case circuit breaker mentioned in above background art, to lead to the defects of unclear and inaccurate indication of the opening and closing indication device.

[0004] To achieve the above object, the utility model provides the following technical scheme: an improved molded case circuit breaker, including base, the base is internally provided with installation cavity, a plurality of partitions are fixedly connected in the installation cavity, and chamber is formed between the partitions, electromagnetic tripping mechanism is rotatably connected in the chamber, fixed plate is provided above the surface of the partition, microswitch is fixedly installed on the surface of the top of the fixed plate relative to electromagnetic tripping mechanism, and the microswitch and electromagnetic tripping mechanism are in movable contact, mutual inductor is provided in the installation cavity in front of electromagnetic tripping mechanism, line board is installed in the installation cavity on the top of mutual inductor, and the line board is electrically connected with microswitch, indicating plate is fixedly connected on the top of line board by connecting column, and the indicating plate is electrically connected with line board.

[0005] Preferably, the electromagnetic tripping mechanism includes fixed frame, rotating plate and rotating rod, the fixed frame is fixedly installed in the chamber, the fixed frame and the rotating plate are connected by the rotating rod, the rotating rod passes through the fixed frame and is connected with the surface of the partition at both ends, and the rotating plate is in movable contact with the microswitch.

[0006] Preferably, the rotating plate top is fixedly connected with an upwardly bent contact rod, and the contact rod is in movable contact with the microswitch.

[0007] Preferably, an operating mechanism matched with the electromagnetic tripping mechanism is mounted in the mounting cavity behind the electromagnetic tripping mechanism.

[0008] Preferably, the top surface of the circuit board is fixedly connected with plug-in sockets in a number equal to that of the microswitches, and the circuit board is electrically connected with the microswitches through the plug-in sockets.

[0009] Preferably, the indicating plate surface is fixedly mounted with indicating lamps in a number equal to that of the microswitches.

[0010] Preferably, the partition plate top surface is provided with a clamping groove, and one end surface of the fixed plate is fixedly connected with a clamping block at a position opposite to the clamping groove, and the clamping block and the clamping groove are clamped with each other.

[0011] Beneficial effects

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] According to the structure design of the utility model, the electromagnetic tripping mechanism rotates to touch the microswitch, the microswitch transmits opening and closing signals, the indicating lamps are turned on and off, and the stability is high, so that the problems in the background art are effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole cooperation structure schematic view of the utility model;

[0015] Figure 2 It is a base structure schematic view of the utility model;

[0016] Figure 3 It is an electromagnetic tripping mechanism structure schematic view of the utility model;

[0017] Figure 4 It is a fixed plate structure schematic view of the utility model.

[0018] The correspondence between the annotations of the drawings and the component names in the drawings is as follows:

[0019] 1. base; 2. electromagnetic tripping mechanism; 3. fixed plate; 4. microswitch; 5. mutual inductor; 6. circuit board;

[0020] 7. connecting column; 8. indicating plate; 9. operating mechanism; 11. mounting cavity; 12. partition plate; 13. clamping groove;

[0021] 14. Chamber; 21. Fixed frame; 22. Rotating plate; 23. Rotating rod; 24. Contact rod; 25. Limiting plate;

[0022] 31. Card block; 61. Plug base; 81. Indicator light. DETAILED DESCRIPTION

[0023] The technical solutions of the utility model will be described below in conjunction with the embodiments. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0024] In the description of the utility model, it should be pointed out that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "vertical", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for descriptive purposes and should not be understood as indicating or implying relative importance.

[0025] As Figures 1-4 It is a preferred embodiment of the utility model, and the structure of the improved molded case circuit breaker is shown in the figure. In this embodiment, the improved molded case circuit breaker comprises a base 1, an installation cavity 11 is formed in the base 1, a plurality of partition plates 12 are fixedly connected in the installation cavity 11, and a chamber 14 is formed between the partition plates 12, an electromagnetic tripping mechanism 2 is rotatably connected in the chamber 14, a fixed plate 3 is arranged above the surface of the partition plate 12, a micro switch 4 is fixedly installed on the top surface of the fixed plate 3 in the opposite position of the electromagnetic tripping mechanism 2 through fasteners, and the micro switch 4 is in movable contact with the electromagnetic tripping mechanism 2, a mutual inductor 5 is arranged in front of the electromagnetic tripping mechanism 2 in the installation cavity 11, a circuit board 6 is installed on the top of the mutual inductor 5 in the installation cavity 11, and the circuit board 6 is electrically connected with the micro switch 4, an indication plate 8 is fixedly connected with the circuit board 6 on the top of the circuit board 6 through a connecting column 7, and the indication plate 8 is electrically connected with the circuit board 6. According to the structure design of the utility model, the electromagnetic tripping mechanism 2 rotates to touch the micro switch 4, the opening and closing signal is transmitted through the micro switch 4, the indicator light is turned on and off, and the stability is high, so that the problems in the background art are effectively solved.

[0026] In the embodiment, the electromagnetic tripping mechanism 2 comprises a fixed frame 21, a rotating plate 22 and a rotating rod 23, the fixed frame 21 is fixedly installed in the cavity 14, the fixed frame 21 and the rotating plate 22 are connected through the rotating rod 23, the rotating rod 23 passes through the fixed frame 21 and is connected to the surface of the partition plate 12, so that the rotating plate 22 is centered on the rotating rod 23 and realizes the function of rotation, and the rotating plate 22 is in movable contact with the micro switch 4 through the rotating plate 22.

[0027] In the embodiment, the rotating plate 22 is fixedly connected with an upwardly bent contact rod 24 at the top, the contact rod 24 is in movable contact with the micro switch 4 under the driving of the rotating plate 22, and the opening and closing function of the micro switch 4 is realized, the fixed frame 21 is fixedly connected with a limiting plate 25 at both sides of the outer wall and at the front and rear ends, and the two limiting plates 25 are movably connected to the front and rear end faces of the rotating plate 22, respectively, and the limiting function of the rotating plate 22 is realized through the limiting plate 25.

[0028] In the embodiment, the operating mechanism 9 cooperating with the electromagnetic tripping mechanism 2 is installed at the rear of the electromagnetic tripping mechanism 2 in the installation cavity 11, the structure design is prior art, and thus is not described in detail.

[0029] In the embodiment, the top surface of the circuit board 6 is fixedly connected with plug-in seats 61 in the same number as the micro switch 4, the circuit board 6 is connected with the plug-in seats 61 through connecting wires, the plug-in seats 61 are electrically connected with the micro switch 4, and the transmission of the opening and closing signals is realized.

[0030] In the embodiment, the surface of the indicating plate 8 is fixedly installed with indicating lamps 81 in the opposite number to the micro switch 4, the opening and closing signals of the micro switch 4 are directly fed back through the indicating lamps 81, and the state inside the molded case circuit breaker is directly fed back.

[0031] In the embodiment, the top surface of the partition plate 12 is provided with a clamping groove 13, and a clamping block 31 is fixedly connected to the surface of the fixed plate 3 at a position opposite to the clamping groove 13, and the clamping block 31 and the clamping groove 13 are clamped with each other, the structure design plays a limiting role on the fixed plate 3.

[0032] The above is a further detailed description of the utility model in combination with the specific embodiments, and the specific embodiments of the utility model cannot be limited to these descriptions, and for ordinary skilled in the art to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all of them should be regarded as belonging to the protection scope determined by the claims of the utility model.

Claims

1. An improved molded case circuit breaker comprising a base (1) characterized in that: The base (1) is provided with an installation cavity (11), a plurality of partitions (12) are fixedly connected in the installation cavity (11), and a chamber (14) is formed between the partitions (12), the electromagnetic tripping mechanism (2) is rotatably connected in the chamber (14), the fixed plate (3) is arranged above the surface of the partition (12), the micro switch (4) is fixedly installed on the top surface of the fixed plate (3) in the opposite position of the electromagnetic tripping mechanism (2), and the micro switch (4) is in movable contact with the electromagnetic tripping mechanism (2), the mutual inductor (5) is arranged in front of the electromagnetic tripping mechanism (2) in the installation cavity (11), the circuit board (6) is installed on the top of the mutual inductor (5) in the installation cavity (11), and the circuit board (6) is electrically connected with the micro switch (4), and the indicating plate (8) is fixedly connected to the top of the circuit board (6) through the connecting column (7), and the indicating plate (8) is electrically connected with the circuit board (6).

2. The improved molded case circuit breaker of claim 1, wherein: The electromagnetic tripping mechanism (2) comprises a fixed frame (21), a rotating plate (22) and a rotating rod (23), the fixed frame (21) is fixedly installed in the chamber (14), the fixed frame (21) and the rotating plate (22) are connected through the rotating rod (23), the rotating rod (23) penetrates the fixed frame (21) and is connected with the surface of the partition (12) at both ends, and the rotating plate (22) is in movable contact with the micro switch (4).

3. The improved molded case circuit breaker of claim 2, wherein: The rotating plate (22) is fixedly connected with the upwardly bent contact rod (24) on the top, and the contact rod (24) is in movable contact with the micro switch (4), the fixed frame (21) is fixedly connected with the limiting plate (25) on the outer wall of the two sides at the front and rear ends, and the two limiting plates (25) are movably connected to the front and rear end faces of the rotating plate (22) respectively.

4. The improved molded case circuit breaker of claim 1, wherein: The operation mechanism (9) matched with the electromagnetic tripping mechanism (2) is installed behind the electromagnetic tripping mechanism (2) in the installation cavity (11).

5. The improved molded case circuit breaker of claim 1, wherein: The circuit board (6) is fixedly connected with the plug seat (61) in the same number as the micro switch (4) on the top surface, and the circuit board (6) is electrically connected with the micro switch (4) through the plug seat (61).

6. The improved molded case circuit breaker of claim 1, wherein: The indicating plate (8) is fixedly installed with the indicating lamp (81) in the opposite number of the micro switch (4) on the surface.

7. The improved molded case circuit breaker of claim 1, wherein: The partition (12) is provided with a clamping groove (13) on the top surface, and the clamping block (31) is fixedly connected to the surface of one end of the fixed plate (3) in the opposite position of the clamping groove (13), and the clamping block (31) and the clamping groove (13) are clamped with each other.

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