Circuit breaker magnet yoke and circuit breaker

Abstract

The utility model discloses a circuit breaker magnet yoke and circuit breaker relates to circuit breaker magnet yoke technical field, the circuit breaker magnet yoke includes the magnetic conduction assembly, the magnetic conduction assembly includes the conductor, one side of the conductor is clamped with the magnet yoke body, the middle part of the magnet yoke body and the middle part of the conductor are both fixedly connected with the fixed buckle, and the fixed buckle is connected with the magnetic conduction assembly. A fixing hook is fixedly connected to the bottom of the magnet yoke body, a spring is movably installed at the bottom of the fixing hook, and an armature is movably installed at the bottom of the spring. According to the circuit breaker magnet yoke of the utility model, the U-shaped magnet yoke is arranged at the middle upper position of the conductor, and the armature is arranged at the middle lower position of the conductor, so that the Z-shaped conductor can pass through an area enclosed by the magnet yoke body and the armature, and therefore, the magnetic conduction and the attraction effect of the magnet yoke body, the conductor and the armature can be ensured; the U-shaped bottom of the magnet yoke body is arranged downwards, and the conductor does not need to be bent upwards and is directly bent downwards, so that the space is saved to the maximum extent, and meanwhile, the material consumption of the conductor is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker magnetic yoke technical field, especially a kind of circuit breaker magnetic yoke and circuit breaker. BACKGROUND

[0002] Circuit breaker, also known as automatic switch, is a kind of switch appliance that can be manually operated and automatically cut off circuit when abnormal conditions such as loss of voltage, under-voltage, overload, short circuit and the like occur. Its main function is to distribute electric energy and automatically cut off circuit when serious fault occurs in circuit or electrical equipment to prevent the expansion of fault and protect the safety of circuit and equipment. Circuit breaker magnetic yoke is usually made of yoke iron stacked by silicon steel sheet, which is uniformly and symmetrically distributed around induction coil. Its main function is to constrain the outward diffusion of induction coil leakage magnetic field and improve the efficiency of induction heating. Meanwhile, as magnetic shielding, it reduces the heating of metal components such as furnace frame and plays a role in reinforcing inductor.

[0003] The circuit breaker magnetic yoke of prior art is generally provided in U shape, and the opening position is opposite to armature. Since the U-shaped bottom of magnetic yoke has a certain height, the conductor of prior art is generally bent upward for a section, then bent forward for a section, and then bent downward for a section to accommodate the U-shaped bottom of magnetic yoke. This not only wastes space, but also increases the material consumption of conductor.

[0004] Therefore, a circuit breaker magnetic yoke and circuit breaker are proposed to solve the above problems. SUMMARY

[0005] In order to make up for the deficiencies of prior art, the conductor of prior art is generally bent upward for a section, then bent forward for a section, and then bent downward for a section to accommodate the U-shaped bottom of magnetic yoke. This not only wastes space, but also increases the material consumption of conductor. A circuit breaker magnetic yoke and circuit breaker are proposed.

[0006] The utility model discloses a kind of circuit breaker magnetic yokes, including magnetic conducting component, the magnetic conducting component includes conductor, the side of the conductor is connected with magnetic yoke body, the middle part of the magnetic yoke body and the middle part of conductor are fixedly connected with fixed buckle, the bottom of the magnetic yoke body is fixedly connected with fixed hook, the bottom of the fixed hook is movably installed with spring, the bottom of the spring is movably installed with armature, characterized in that: the armature is arranged on the side of magnetic yoke body, the side of the magnetic yoke body extending below conductor and the side of its own top close to armature are in staggered state of non-parallel.

[0007] Preferably, the conductor is in the shape of "Z", the magnetic yoke body is in the shape of "U", and the middle part of the conductor passes through the area surrounded by the magnetic yoke body and the armature.

[0008] Preferably, the end of the fixed buckle is movably installed with a magnetic conducting plate, and the bottom of the magnetic conducting plate extends to the middle part of the armature.

[0009] Preferably, the middle part of the armature is fixedly connected with rotating blocks on both sides.

[0010] Preferably, the bottom of the armature is fixedly connected with a touch head, and the touch head is perpendicular to the bottom of the armature.

[0011] Preferably, the bottom of the armature is provided with a plurality of hanging holes penetrating through the armature, and the inner wall of the hanging hole is clamped with the bottom end of the spring.

[0012] The utility model discloses a kind of circuit breakers, including shell, operating mechanism, arc extinguishing system, contact system and the circuit breaker magnetic yoke.

[0013] Since the above technical solutions are adopted, the technical progress achieved by the utility model relative to the prior art is:

[0014] 1. The utility model provides a kind of circuit breaker magnetic yoke, by being arranged in the middle upper position of conductor with U type magnetic yoke, armature is arranged in the middle lower position of conductor, so that Z type conductor can pass through the area surrounded by magnetic yoke body and armature, to further guarantee magnetic conduction and the attraction effect of magnetic yoke body and conductor and armature, simultaneously, magnetic yoke body U type bottom is set down, conductor does not need to bend upwards, directly downwards, so that maximum limit space is saved, and the material amount of conductor is reduced simultaneously.

[0015] 2. The utility model provides a kind of circuit breaker magnetic yoke, by setting up magnetic conducting plate, magnetic conducting plate is made of magnetic material, with good magnetic conduction performance, when the coil of electromagnetic release is electrified, magnetic yoke body will produce magnetic field, and magnetic conducting plate can enhance and guide this magnetic field, so that magnetic field is more concentrated and stable, to further make armature more easily move under the action of electromagnetic force, to further drive circuit breaker to realize the disconnection of circuit. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic diagram of the utility model;

[0017] Figure 2 It is the overall internal structure schematic diagram of the utility model;

[0018] Figure 3 It is the magnetic conducting assembly structure schematic diagram of the utility model;

[0019] Figure 4 It is the magnetic conducting assembly structure explosion effect schematic diagram of the utility model.

[0020] In the figure: 1, the shell; 2, operating mechanism; 3, arc extinguishing system; 4, contact system; 5, magnetically conductive assembly; 51, conductor; 52, armature; 521, rotating block; 522, touch head; 523, hanging hole; 53, magnetic yoke body; 54, magnetically conductive plate; 55, fixed hook; 56, fixed buckle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] The specific embodiments are given below.

[0023] Please refer to Figure 1 Figure 4 The utility model provides a kind of technical solutions: a circuit breaker magnetic yoke, including magnetically conductive assembly 5, magnetically conductive assembly 5 includes conductor 51, one side of conductor 51 is connected with magnetic yoke body 53, the middle part of magnetic yoke body 53 and the middle part of conductor 51 are all fixedly connected with fixed buckle 56, the bottom of magnetic yoke body 53 is fixedly connected with fixed hook 55, the bottom of fixed hook 55 is movably installed with spring, the bottom of spring is movably installed with armature 52, it is characterized in that: armature 52 is arranged on the side of magnetic yoke body 53 top, magnetic yoke body 53 extends to the side below conductor 51 and its own top side close to the side of armature 52 is in non-parallel staggered state, fixed buckle 56 is used to fix magnetic yoke body 53 and conductor 51, to ensure the stability between the two, while fixed hook 55 provides stable positioning effect for spring, to improve the stability of circuit breaker internal tripping effect, magnetic yoke body 53 U type bottom is set downward, and located in the side below armature 52, and its own top is no longer opposite, so that conductor 51 does not need to bend upwards, directly downward, maximum limit space saving, while reducing the material consumption of conductor 51.

[0024] As Figure 3 Shown, conductor 51 is "Z" type, magnetic yoke body 53 is "U" type, and the middle part of conductor 51 passes through the area surrounded by magnetic yoke body 53 and armature 52, by setting U type magnetic yoke in the middle upper position of conductor 51, armature 52 is set in the middle lower position of conductor 51, so that Z type conductor 51 can pass through the area surrounded by magnetic yoke body 53 and armature 52, to ensure magnetically conductive and the attraction effect of magnetic yoke body 53, conductor 51 and armature 52.

[0025] As Figure 4 ​As shown, the end of the fixed buckle 56 is movably mounted with a magnetic conducting plate 54, the bottom of the magnetic conducting plate 54 extends to the middle of the armature 52, the magnetic conducting plate 54 is made of magnetic material and has good magnetic conducting performance, when the coil of the electromagnetic release is energized, the magnetic yoke body 53 will generate a magnetic field, and the magnetic conducting plate 54 can enhance and guide this magnetic field, so that the magnetic field is more concentrated and stable, and then the armature 52 is more easily moved under the action of electromagnetic force, thereby driving the circuit breaker to realize the disconnection of the circuit, and when the magnetic conducting plate 54 extends to the middle of the armature 52, the path of the magnetic force line in the air can be shortened, thereby reducing the magnetic resistance, and due to the reduction of the magnetic resistance, more magnetic flux can flow through the armature 52, so that the suction force of the magnetic yoke body 53 is enhanced, and the working efficiency of the circuit breaker is improved.

[0026] As shown in Figure 4 , the middle of the armature 52 is fixedly connected with a rotating block 521, and the bottom of the armature 52 is fixedly connected with a touch head 522, the touch head 522 is perpendicular to the bottom of the armature 52, and the rotating block 521 is the connecting point between the armature 52 and the circuit breaker shell 1. When the magnetic yoke body 53 generates sufficient suction force, the armature 52 will be attracted and drive the rotating block 521 to rotate together, the rotation of the armature 52 will drive the touch head 522 to rotate together, and the rotation of the touch head 522 can trigger the trigger module of the circuit breaker operating mechanism 2, thereby enabling the circuit breaker to quickly respond to circuit failure and cut off the power supply. In this process, the touch head 522 and the bottom of the armature 52 are perpendicular to each other, thereby improving the triggering effect of the touch head 522.

[0027] As shown in Figure 4 , the bottom of the armature 52 is provided with a plurality of hanging holes 523 penetrating through the armature 52, and the inner wall of the hanging hole 523 is clamped with the bottom end of the spring. By setting different numbers or types of hanging buckles, the connection mode and force between the armature 52 and the spring can be adjusted, thereby adjusting the torque of the armature 52 when rotating, and thereby adjusting the electromagnetic force required for the touch head 522 to trigger the power-off, thereby more detailedly adjusting and controlling the size of the fault current that the circuit breaker responds to.

[0028] The utility model discloses a working principle: when using, in initial state, circuit breaker is in closed state, armature 52 keeps initial state under the action of spring, and a certain interval is kept with the magnetic yoke body 53, simultaneously, conductor 51 passes through electric current, and magnetic plate 54 is located at the bottom of magnetic yoke body 53, is used for enhancing magnetic field, when the abnormal situation of current appears in the circuit, the current in the circuit is abnormally increased, and then the current in conductor 51 produces greater magnetic field, and the enhanced magnetic field will attract armature 52, and make its top rotate to the direction of magnetic yoke body 53, when armature 52 and magnetic yoke body 53 contact close contact, a powerful electromagnetic force is produced, and then armature 52 overcomes the resistance of spring and rotates, in the process of armature 52 rotation, will drive touch head 522 to rotate together, and touch head 522 rotation can trigger the trigger module of circuit breaker operating mechanism 2, and then can make circuit breaker can respond to circuit fault rapidly and cut off power supply, after fault current is cut off, the electromagnetic force in circuit breaker disappears, at this time, under the reaction of spring, armature 52 rotates and resets to initial position, prepares for the next power-off work.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The skilled person in the art should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification only illustrate the principle of the utility model, and under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A circuit breaker yoke, comprising a magnetically conductive assembly (5), the magnetically conductive assembly (5) comprising a conductor (51), a yoke body (53) snapped onto one side of the conductor (51), a fixing buckle (56) fixedly connected to the middle of the yoke body (53) and the middle of the conductor (51), a fixing hook (55) fixedly connected to the bottom of the yoke body (53), a spring movably mounted at the bottom of the fixing hook (55), and an armature (52) movably mounted at the bottom of the spring, characterized in that: The armature (52) is arranged above the side of the yoke body (53), the yoke body (53) extends to the side below the conductor (51) and is in a staggered state with the top of the yoke body (53) being non-parallel to the side near the armature (52).

2. A circuit breaker yoke according to claim 1, wherein: The conductor (51) is in a "Z" shape, the yoke body (53) is in a "U" shape, and the middle part of the conductor (51) passes through the area surrounded by the yoke body (53) and the armature (52).

3. The magnetic yoke for a circuit breaker of claim 1, wherein: The end of the fixed buckle (56) is movably arranged with a magnetic conducting plate (54), and the bottom of the magnetic conducting plate (54) extends to the middle part of the armature (52).

4. The magnetic yoke for a circuit breaker of claim 1, wherein: The middle part of the armature (52) on both sides is fixedly connected with a rotating block (521).

5. The magnetic yoke for a circuit breaker of claim 1 wherein: The bottom of the armature (52) is fixedly connected with a touch head (522), and the touch head (522) is perpendicular to the bottom of the armature (52).

6. The magnetic yoke for a circuit breaker of claim 1, wherein: The bottom of the armature (52) is provided with a plurality of hanging holes (523) penetrating the armature (52), and the inner wall of the hanging hole (523) is clamped with the bottom end of the spring.

7. A circuit breaker characterized by: The circuit breaker includes a shell (1), an operating mechanism (2), an arc extinguishing system (3), a contact system (4), and the magnetic yoke of any one of claims 1-6.

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