Intelligent circuit breaker with high reliability

Abstract

The utility model provides an intelligent circuit breaker with high reliability, which comprises a shell, a cavity is arranged in the shell, a tripping mechanism is arranged in the cavity, a static contact is arranged on one side of the bottom of the cavity, the tripping mechanism comprises a tripping seat movably arranged in an inner cavity, a moving contact is arranged on the tripping seat, a shifting block is arranged on one side of the tripping seat, and a movable contact is arranged on the shifting block. The tripping mechanism further comprises an electric leakage coil arranged on one side of the bottom of the cavity, an ejector rod is movably arranged in the electric leakage coil, a push rod is movably arranged between the static contact and the cavity, and a shifting rod is arranged on one side of the top of the push rod. According to the utility model, the push rod is pushed by the push rod, and the shifting rod at the top of the push rod pushes the shifting block on the tripping seat, so that the tripping seat moves, and the tripping seat drives the moving contact to move, so that the moving contact is separated from the static contact, and the stability and reliability of the circuit breaker are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, and particularly relates to an intelligent circuit breaker with high reliability. Background Art

[0002] A circuit breaker (English name: circuit-breaker, circuit breaker) refers to a switching device that can close, carry, and break the current under normal circuit conditions, and can also close, carry, and break the current under abnormal circuit conditions (including short-circuit conditions) within a specified time. Circuit breakers can be used to distribute electric energy, start asynchronous motors infrequently, protect power supply lines and motors, etc. When they encounter serious overload, short-circuit, undervoltage and other faults, they can automatically cut off the circuit. Its function is equivalent to the combination of a fuse-type switch and an over- and under-thermal relay, etc. Moreover, generally no parts need to be changed after breaking the fault current. At present, it has been widely used.

[0003] For example, a circuit breaker disclosed in Chinese Patent Publication No. CN117253754A includes a housing and at least one circuit breaker pole disposed inside the housing. Each circuit breaker pole includes at least one main circuit. A first wiring port is provided on the side wall of the housing. At least one main circuit is connected with a lead-out conductive member, and the lead-out conductive member is provided with a plug-in part; the plug-in part has a slot inside and is disposed opposite to the first wiring port, and / or at least one of the plug-in parts passes through the first wiring port and extends outside the housing. In the present invention, a lead-out conductive member with a plug-in part is connected to the main circuit, so that the accessory module of the circuit breaker is inserted into the plug-in part for plug-in cooperation, or the plug-in part extends outside the housing to be plugged and matched with the accessory module of the circuit breaker, which is beneficial to the plug-in assembly of the accessory module of the circuit breaker and the circuit breaker, replacing the prior art of connecting the accessory module of the circuit breaker and the circuit breaker through wires, and is conducive to realizing the automatic assembly of the accessory module of the circuit breaker and the circuit breaker, meeting the modular development of the circuit breaker.

[0004] The circuit breaker of this structure usually realizes the breaking action by directly pushing the moving contact part by the ejector rod inside the coil. However, the force of the ejector rod of this structure directly acts on the moving contact part, so that a relatively large force is required when the ejector rod is pushed. And because there is a gap between the ejector rod and the coil, the ejector rod is prone to shake when it moves, resulting in the force not being fully applied to the moving contact part, resulting in a poor breaking effect, and further resulting in low stability and reliability during use. Content of the Utility Model

[0005] The utility model aims to provide an intelligent circuit breaker with high reliability to solve the problems raised in the above background art.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] An intelligent circuit breaker with high reliability includes a housing. A cavity is provided inside the housing. A tripping mechanism is provided inside the cavity. A static contact is provided on one side of the bottom of the cavity. The tripping mechanism includes a tripping seat movably arranged inside the cavity. A moving contact is provided on the tripping seat. A dial block is provided on one side of the tripping seat. The tripping mechanism further includes a leakage current coil provided on one side of the bottom of the cavity. A push rod is movably arranged inside the leakage current coil. A push rod is movably arranged between the static contact and the cavity. A dial rod is provided on one side of the top of the push rod.

[0008] Preferably, the positions of the dial rod and the dial block are opposite to each other.

[0009] Preferably, the moving contact moves along with the tripping seat.

[0010] Beneficial effects

[0011] One or more of the above technical solutions in the intelligent circuit breaker with high reliability provided by the embodiments of the present invention have at least one of the following technical effects:

[0012] Through the above technical solutions of the present invention, when a short circuit occurs, current passes through the leakage current coil, and the leakage current coil generates electromagnetism to eject the push rod. The push rod pushes the push rod to make the push rod rotate. The dial rod at the top of the push rod pushes the dial block on the tripping seat, causing the tripping seat to move. The tripping seat drives the moving contact to move, causing the moving contact and the static contact to break. By using the push rod and the dial rod to play a lever role, less force is required during breaking, and the breaking is faster. Moreover, by using the push rod and the dial rod to move the moving contact to break, the problem that the existing push rod is prone to shaking during operation, resulting in the force not being fully applied to the moving contact part and poor breaking effect, is solved, effectively improving the stability and reliability of the circuit breaker. Description of the drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the internal structure of the cavity of the present invention;

[0015] Figure 3 It is a schematic diagram of the structure of the tripping mechanism of the present invention;

[0016] The corresponding relationship between the reference numerals in the drawings and the component names is as follows:

[0017] 1. Housing; 2. Cavity; 3. Tripping mechanism; 4. Static contact; 5. Tripping seat; 6. Moving contact; 7. Dial block; 8. Leakage current coil; 9. Push rod; 10. Push rod; 11. Dial rod. Specific embodiments

[0018] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figures 1 - 3 As shown, it is a structural schematic diagram of a highly reliable intelligent circuit breaker in a preferred embodiment of the utility model;

[0022] In this embodiment, a housing 1 is included, a cavity 2 is provided in the housing 1, a tripping mechanism 3 is provided in the cavity 2, a static contact 4 is provided on one side of the bottom of the cavity 2, the tripping mechanism 3 includes a tripping seat 5 movably provided in the cavity 2, a moving contact 6 is provided on the tripping seat 5, a shifting block 7 is provided on one side of the tripping seat 5, the tripping mechanism 3 also includes a leakage coil 8 provided on one side of the bottom of the cavity 2, a top rod 9 is movably provided inside the leakage coil 8, the static contact 4 is connected to the cavity 2, and the static contact 4 is connected to the cavity 2. 2, a push rod 10 is movably provided between the push rod 10, and a lever 11 is integrally provided on one side of the top of the push rod 10. When a short circuit occurs, current passes through the leakage coil 8, and the leakage coil 8 generates an electromagnetic force to push out the push rod 9. The push rod 9 pushes the push rod 10 to rotate the push rod 10. The lever 11 on the top of the push rod 10 pushes the shift block 7 on the trip seat 5 to move the trip seat 5. The trip seat 5 drives the moving contact 6 to move so that the moving contact 6 is disconnected from the static contact 4, and the push rod 10 and the lever 11 play a lever role.

[0023] In this embodiment, the shifting rod 11 and the shifting block 7 are located opposite to each other, so that the shifting block 7 can be easily moved by the shifting rod 11 .

[0024] In this embodiment, the moving contact 6 moves following the trip seat 5. Through this structure, when the trip seat 5 moves, it drives the moving contact 6 to act, completing the breaking action between the moving contact 6 and the static contact 4.

[0025] An intelligent circuit breaker with high reliability according to the present utility model has an installation method, a connection method, or a setting method that are all common mechanical methods, and any implementation that can achieve its beneficial effects can be carried out.

[0026] The technologies not described in detail in the present utility model are all well-known technologies. Those skilled in the art can easily implement the present utility model on the basis of understanding this specification, and the content shown in the drawings is a part of this specification.

[0027] The above content further elaborates on the present utility model in combination with specific implementation manners. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope determined by the claims submitted for the present utility model.

Claims

1. An intelligent circuit breaker with high reliability, comprising a housing (1), characterized in that: A cavity (2) is provided inside the housing (1). A tripping mechanism (3) is provided inside the cavity (2). A static contact (4) is provided on one side of the bottom of the cavity (2). The tripping mechanism (3) includes a tripping seat (5) movably arranged in the cavity (2). A moving contact (6) is provided on the tripping seat (5). A shifting block (7) is provided on one side of the tripping seat (5). The tripping mechanism (3) further includes a leakage current coil (8) provided on one side of the bottom of the cavity (2). A push rod (9) is movably arranged inside the leakage current coil (8). A push rod (10) is movably arranged between the static contact (4) and the cavity (2). A shifting rod (11) is provided on one side of the top of the push rod (10).

2. The intelligent circuit breaker with high reliability according to claim 1, wherein: The shifting rod (11) and the shifting block (7) are in opposite positions.

3. An intelligent circuit breaker with high reliability according to claim 1, characterized in that: The moving contact (6) moves along with the tripping seat (5).

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