阅读说明：本技术 一种单级断路器操动机构 (Single-stage circuit breaker operating mechanism ) 是由 李娜 夏慧 王俊 刘蓉 褚禹志 杨国胜 于 2019-08-20 设计创作，主要内容包括：本发明涉及一种单级断路器操动机构,其特征在于：包括永磁体模块、支撑侧板、传动模块和分闸模块；所述传动模块设置在永磁体模块的输出端上,所述传动模块与分闸模块相连实现分闸动作；本发明中巧妙地利用永磁体的通断电以及传动模块的配合、保持和释放的联动关系,断路器操动机构的结构紧凑,有利于对开关柜的整体设计布置,本发明的断路器操动机构内部零件布置合理,结构紧凑,性能稳定,由于对结构进行了改进,降低了制造成本；其使用寿命可以延长至3万到8万次,实现了在降低生产成本的前提下,大幅提高产品寿命的效果。(The invention relates to a single-stage circuit breaker operating mechanism, which is characterized in that: the permanent magnet braking device comprises a permanent magnet module, a supporting side plate, a transmission module and a brake separating module; the transmission module is arranged at the output end of the permanent magnet module and is connected with the opening module to realize opening action; according to the invention, the linkage relation of power on and power off of the permanent magnet and matching, maintaining and releasing of the transmission module is skillfully utilized, the structure of the circuit breaker operating mechanism is compact, and the overall design and arrangement of the switch cabinet are facilitated; the service life of the device can be prolonged to 3 to 8 thousands of times, and the effect of greatly prolonging the service life of the product is realized on the premise of reducing the production cost.)

1. The utility model provides a single-stage circuit breaker operating mechanism which characterized in that: the permanent magnet braking device comprises a permanent magnet module, a supporting side plate, a transmission module and a brake separating module; the transmission module is arranged at the output end of the permanent magnet module and is connected with the opening module to realize opening action;

the permanent magnet module comprises a permanent magnet and a permanent magnet mounting seat; the permanent magnet is fixedly arranged on the lower end face of the permanent magnet mounting seat, and a through hole for accommodating the output end of the permanent magnet is formed in the center of the permanent magnet mounting seat;

the supporting side plates are provided with a pair of supporting side plates which are parallel to each other and are vertically arranged on the upper surface of the permanent magnet mounting seat and are locked by bolts, and a gap for accommodating the transmission module and the opening module is formed between the supporting side plates; the top end of the supporting side plate is provided with a pressing plate which is vertical to the supporting side plate, the pressing plate is locked at the top end of the pair of supporting side plates through bolts, and the pressing plate is provided with a connecting plate guide hole;

the transmission module comprises a connecting plate, a brake separating spring and a transmission block; the bottom end of the connecting plate is connected to the output end of the permanent magnet and moves along the vertical direction under the driving of the permanent magnet; the top end of the connecting plate penetrates through a connecting plate guide hole on the pressing plate, and the end part of the connecting plate is provided with a connecting pin hole; a limiting table is arranged on one side edge of the connecting plate and is perpendicular to the extending direction of the connecting plate, and a spring seat is arranged on the upper surface of the limiting table; the bottom end mounting seat of the opening spring is arranged on the spring seat on the upper surface of the limiting table, and the top end mounting seat of the opening spring is arranged on the bottom end of the pressing plate; a waist-shaped hole is formed in the connecting plate and is perpendicular to the extending direction of the connecting plate;

the transmission block comprises a transmission pin, a transmission connecting plate, a rotating shaft and a switching-off module shifting plate; the transmission pins penetrate through kidney-shaped holes in the connecting plates, the transmission connecting plates are provided with a pair of transmission connecting plates which are parallel to each other, one ends of the transmission connecting plates are respectively connected to two ends of the transmission pins, and the other ends of the transmission connecting plates are fixedly connected to the rotating shaft; the rotating shaft is arranged on the supporting side plate through a rotating bearing, and the opening module shifting plate is arranged on the rotating shaft in a direction vertical to the axis direction of the rotating shaft; the switching-off module shifting plate swings along with the rotating shaft to realize the operation of the switching-off module.

2. The single-stage circuit breaker operating mechanism of claim 1, wherein: a limiting bolt hole is formed in the permanent magnet mounting seat, and a limiting stud is arranged in the limiting bolt hole; the height of the limiting stud can be adjusted in the vertical direction along the limiting bolt hole, the limiting height of the limiting stud can be adjusted, and the limiting stud is matched with a limiting table on the connecting plate to limit the connecting plate.

3. The single-stage circuit breaker operating mechanism of claim 1, wherein: and a plurality of reinforcing pin shafts are vertically arranged between the supporting side plates.

4. The single-stage circuit breaker operating mechanism of claim 1, wherein: the brake separating module comprises a first rotating shaft, a second rotating shaft and a reset torsion spring; the first rotating shaft and the second rotating shaft are both provided with reset torsion springs and are parallel to each other; the first rotating shaft is provided with a contact block matched with the switching-off module shifting plate and a clamping plate matched with the second rotating shaft; the second rotating shaft is provided with a groove matched with the clamping plate on the first rotating shaft, and the groove is positioned on a rotary path of the clamping plate on the first rotating shaft.

Technical Field

The invention relates to the field of circuit breakers, in particular to a single-stage circuit breaker operating mechanism.

Background

The single-stage circuit breaker is a low-voltage terminal electric appliance widely used in industrial and civil fields, and mainly comprises an operating mechanism, a contact system, an arc extinguishing system, a magnetic tripping system, a thermal tripping system, a shell and the like. The operating mechanism generally comprises a handle and at least one link, and the contact system generally comprises a movable contact and a stationary contact. In the existing single-stage circuit breaker, the moving contact is usually connected with a connecting rod and is driven by the connecting rod to be in contact with or disconnected from the fixed contact. Sometimes, for the purpose of description, the handle, the link and the movable contact are also referred to as an operating mechanism, and the names of the components of the circuit breaker are not necessarily limited.

In the existing single-stage circuit breaker, an operating mechanism is mostly a moving contact, and due to ablation in current breaking and abrasion of the contact caused by daily use, and due to the fact that the size of the contact is limited by factors such as cost and space, the circuit breaker with the single-moving contact is greatly limited in breaking capacity, service life, temperature rise and other performances. In order to increase the rated current of the housing of the single-stage circuit breaker, the current density may be decreased by increasing the volume of the circuit breaker or increasing the cross-sectional area of the internal conductor.

The circuit breaker is characterized in that when the contact of the circuit breaker is opened and closed, the circuit breaker can be opened and closed, and the opening and closing of the circuit breaker are realized through an operating mechanism; for a switch cabinet, the existing circuit breaker operating mechanism has unstable performance, large occupied space and high manufacturing cost, so that the structure of the circuit breaker operating mechanism needs to be adjusted.

Disclosure of Invention

The invention aims to provide a single-stage circuit breaker operating mechanism which is reasonable in structure, stable in performance and long in service life.

In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a single-stage circuit breaker operating mechanism which innovation point lies in: the permanent magnet braking device comprises a permanent magnet module, a supporting side plate, a transmission module and a brake separating module; the transmission module is arranged at the output end of the permanent magnet module and is connected with the opening module to realize opening action;

the permanent magnet module comprises a permanent magnet and a permanent magnet mounting seat; the permanent magnet is fixedly arranged on the lower end face of the permanent magnet mounting seat, and a through hole for accommodating the output end of the permanent magnet is formed in the center of the permanent magnet mounting seat;

the supporting side plates are provided with a pair of supporting side plates which are parallel to each other and are vertically arranged on the upper surface of the permanent magnet mounting seat and are locked by bolts, and a gap for accommodating the transmission module and the opening module is formed between the supporting side plates; the top end of the supporting side plate is provided with a pressing plate which is vertical to the supporting side plate, the pressing plate is locked at the top end of the pair of supporting side plates through bolts, and the pressing plate is provided with a connecting plate guide hole;

the transmission module comprises a connecting plate, a brake separating spring and a transmission block; the bottom end of the connecting plate is connected to the output end of the permanent magnet and moves along the vertical direction under the driving of the permanent magnet; the top end of the connecting plate penetrates through a connecting plate guide hole on the pressing plate, and the end part of the connecting plate is provided with a connecting pin hole; a limiting table is arranged on one side edge of the connecting plate and is perpendicular to the extending direction of the connecting plate, and a spring seat is arranged on the upper surface of the limiting table; the bottom end mounting seat of the opening spring is arranged on the spring seat on the upper surface of the limiting table, and the top end mounting seat of the opening spring is arranged on the bottom end of the pressing plate; a waist-shaped hole is formed in the connecting plate and is perpendicular to the extending direction of the connecting plate;

the transmission block comprises a transmission pin, a transmission connecting plate, a rotating shaft and a switching-off module shifting plate; the transmission pins penetrate through kidney-shaped holes in the connecting plates, the transmission connecting plates are provided with a pair of transmission connecting plates which are parallel to each other, one ends of the transmission connecting plates are respectively connected to two ends of the transmission pins, and the other ends of the transmission connecting plates are fixedly connected to the rotating shaft; the rotating shaft is arranged on the supporting side plate through a rotating bearing, and the opening module shifting plate is arranged on the rotating shaft in a direction vertical to the axis direction of the rotating shaft; the switching-off module shifting plate swings along with the rotating shaft to realize the operation of the switching-off module.

Furthermore, a limit bolt hole is formed in the permanent magnet mounting seat, and a limit stud is arranged in the limit bolt hole; the height of the limiting stud can be adjusted in the vertical direction along the limiting bolt hole, the limiting height of the limiting stud can be adjusted, and the limiting stud is matched with a limiting table on the connecting plate to limit the connecting plate.

Furthermore, a plurality of reinforcing pin shafts are vertically arranged between the supporting side plates.

Furthermore, the brake separating module comprises a first rotating shaft, a second rotating shaft and a reset torsion spring; the first rotating shaft and the second rotating shaft are both provided with reset torsion springs and are parallel to each other; the first rotating shaft is provided with a contact block matched with the switching-off module shifting plate and a clamping plate matched with the second rotating shaft; the second rotating shaft is provided with a groove matched with the clamping plate on the first rotating shaft, and the groove is positioned on a rotary path of the clamping plate on the first rotating shaft.

The invention has the advantages that:

1) according to the invention, the linkage relation of power on and power off of the permanent magnet and matching, maintaining and releasing of the transmission module is skillfully utilized, the structure of the circuit breaker operating mechanism is compact, and the overall design and arrangement of the switch cabinet are facilitated; the service life of the device can be prolonged to 3 to 8 thousands of times, and the effect of greatly prolonging the service life of the product is realized on the premise of reducing the production cost.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a perspective view of a single-stage circuit breaker operating mechanism according to the present invention.

Fig. 2 is a perspective view of an internal structure of a single-stage circuit breaker operating mechanism according to the present invention.

Fig. 3 is a structure diagram of a switching-off module of the operating mechanism of the single-stage circuit breaker of the present invention.

Detailed Description

The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.

As shown in fig. 1 to 3, the single-stage circuit breaker operating mechanism includes a permanent magnet module 1, a support side plate 2, a transmission module 3 and a switching-off module 4; the transmission module 3 is arranged at the output end of the permanent magnet module 1, and the transmission module 3 is connected with the brake separating module 4 to realize brake separating action.

The permanent magnet module 1 comprises a permanent magnet 11 and a permanent magnet mounting seat 12; the permanent magnet 11 is fixedly installed on the lower end face of the permanent magnet installation seat 12, and a through hole for accommodating the output end of the permanent magnet 11 is formed in the center of the permanent magnet installation seat 12.

The supporting side plates 2 are provided with a pair of supporting side plates which are mutually parallel and vertically arranged on the upper surface of the permanent magnet mounting seat 12 and are locked by bolts, and a gap for accommodating the transmission module 3 and the opening module 4 is formed between the pair of supporting side plates 2; the top end of the supporting side plate 2 is perpendicular to the supporting side plate 2 and is provided with a pressing plate 21, the pressing plate 21 is locked on the top end of the pair of supporting side plates 2 through bolts, and a connecting plate guide hole is formed in the pressing plate 21.

The transmission module 3 comprises a connecting plate 31, a brake separating spring 32 and a transmission block 33; the bottom end of the connecting plate 31 is connected to the output end of the permanent magnet 11 and moves along the vertical direction under the driving of the permanent magnet 11; the top end of the connecting plate 31 passes through a connecting plate guide hole on the pressing plate 21, and the end part is provided with a connecting pin hole; a limit table 34 is arranged on one side edge of the connecting plate 31 in a direction perpendicular to the extending direction of the connecting plate 31, and a spring seat is arranged on the upper surface of the limit table 34; the bottom end mounting seat of the opening spring 32 is arranged on a spring seat on the upper surface of the limiting table 34, and the top end mounting seat of the opening spring 32 is arranged on the bottom end of the pressing plate 21; the connecting plate 41 is provided with a waist-shaped hole 35 perpendicular to the extending direction of the connecting plate.

The transmission block 33 comprises a transmission pin 331, a transmission connecting plate 332, a rotating shaft 333 and a switching-off module shifting plate 334; the driving pin 331 passes through the kidney-shaped hole 35 on the connecting plate, the driving connecting plates 332 are provided with a pair which are parallel to each other, one end of each driving connecting plate 332 is connected to the two ends of the driving pin 331, and the other end of each driving connecting plate 332 is fixedly connected to the rotating shaft 333; the rotating shaft 333 is mounted on the supporting side plate 2 through a rotating bearing, and the opening module shifting plate 334 is mounted on the rotating shaft 333 in a way of being vertical to the axial direction of the rotating shaft 333; the opening module shifting plate 334 swings along with the rotating shaft 333 to operate the opening module 4.

A limiting bolt hole is formed in the mounting seat of the permanent magnet 11, and a limiting stud 13 is arranged in the limiting bolt hole; the height of the limiting stud 13 can be adjusted in the vertical direction along the limiting bolt hole, the limiting height of the limiting stud 13 can be adjusted, and the limiting stud 13 is matched with the limiting table 34 on the connecting plate 31 to limit the connecting plate 31.

A plurality of reinforcing pin shafts 22 are vertically arranged between the supporting side plates 2.

The opening module 4 comprises a first rotating shaft 41, a second rotating shaft 42 and a reset torsion spring 43; the first rotating shaft 41 and the second rotating shaft 42 are both provided with a reset torsion spring 43, and the first rotating shaft 41 and the second rotating shaft 42 are parallel to each other; the first rotating shaft 41 is provided with a contact block 44 matched with the switching-off module shifting plate 334 and a clamping plate 45 matched with the second rotating shaft 42; the second rotating shaft 42 is provided with a groove 46 matched with the clamping plate on the first rotating shaft 41, and the groove 46 is positioned on the rotating path of the clamping plate 45 on the first rotating shaft 41.

The working principle of the invention is as follows: the connecting plate moves along the vertical direction under the driving of the permanent magnet and is reset through a brake separating spring; the connecting plate moves along the vertical direction to drive the transmission pin pendulum to move vertically, the swing of the transmission connecting plate drives the rotating shaft to swing, and the rotating shaft drives the shifting plate of the opening module arranged on the rotating shaft to swing when swinging, so that the opening module is operated when the shifting plate swings.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.