摘要:
The present invention discloses a fast closing mechanism mounted on a side plate of a circuit breaker. The fast closing mechanism comprises a rotation shaft and an ejector pin. The ejector pin is rotatably assembled to the side plate by the rotation shaft. The ejector pin strides over the side plate. The ejector pin comprises a first portion and a second portion. The first portion is connected to a handle via a rod, and the second portion is located above a press plate. The fast closing mechanism has an additional ejector pin based on current structures, the press plate may press against a moving contact at an initial stage of a closing process, so that the moving contact will not move during the initial stage of the closing process. The mechanical energy generated during the closing process is stored in an energy storage spring. At a later stage of the closing process, the ejector pin releases the press plate, the press plate and the moving contact obtain a large initial speed by the spring force of the energy storage spring and accomplish closing quickly. The period for accomplishing the action of closing is reduced to 2-3ms.
摘要:
The present invention discloses a rotary dual breakpoint moving contact module. The rotary dual breakpoint moving contact module comprises a rod-shaped block rotor, a first connection member, a second connection member and a contact bridge. The rod-shaped block rotor is single phase independent. The rod-shaped block rotor has a first through hole at the center, a first shaft is mounted in the first through hole. The rod-shaped block rotor has a first recess on each axial side face, a contact spring is mounted in each first recess and is able to move within a range defined by the first recess. The first connection member is mounted on the rod-shaped block rotor, a second shaft goes through the first connection member. The second shaft and a third shaft goes through the second connection member respectively. The contact bridge crosses through the rod-shaped block rotor, the outer profile of the contact bridge is centrally symmetric, the first shaft and the third shaft go through the contact bridge respectively. Contacts are welded to the end points on both sides of the contact bridge. The rotary dual breakpoint moving contact module of the present invention may realize large current short circuit breaking of rotary dual breakpoint moving contacts, the moving contacts may open quickly and rebound of the moving contacts is prevented, the contact pressure on two contact points is balanced.
摘要:
The present invention discloses a moving contact linkage structure of modular circuit breaker. The moving contact linkage structure of modular circuit breaker comprises: a first case having a first mounting hole and the second case having a second mounting hole, the first mounting hole and the second mounting hole corresponding to each other on position; a first shaft; an operation mechanism side plate having a third through hole, the third through hole being positioned at a rotation center of a contact rotor; an operation mechanism lower connecting rod having a fourth through hole, the first shaft connecting to the fourth through hole; a contact rotor being rotatable around a rotation center, the contact rotor having mating surfaces on both sides; a first linkage member connecting to the mating surface on a first side of the contact rotor; a second linkage member connecting to the mating surface on a second side of the contact rotor; the contact rotor, the first linkage member and the second linkage member being mounted in the first mounting hole and the second mounting hole.
摘要:
An electrical path for a circuit breaker, comprising: an inlet contact group (121, 122); an outlet contact group (131, 132); and a conductive assembly (115, 111, 112). The inlet contact group (121, 122) is connected to an inlet terminal (123), and the outlet contact group (131, 132) is connected to an outlet terminal (133). The conductive assembly (115, 111, 112) comprises a soft connection assembly (115) and a hard connection assembly (111, 112). The hard connection assembly (111, 112) is fixed to a base of the circuit breaker; the soft connection assembly (115) is connected to the inlet contact group (121, 122) and the outlet contact group (131, 132); the soft connection assembly (115) and the hard connection assembly (111, 112) are connected to provide an electrical path between the inlet contact group (121, 122) and the outlet contact group (131, 132). The inlet contact group (121, 122) and the outlet contact group (131, 132) are mounted coaxially. By combining a soft connection and a hard connection, the electrical path utilizes the flexibility of the soft connection to make the mounting of the contact groups more flexible and convenient and utilizes the hard connection to obtain a reliable and stable electrical path, thus achieving a balance between assembly efficiency and assembly quality.
摘要:
The present invention discloses a rotary dual breakpoint moving contact module. The rotary dual breakpoint moving contact module comprises a rod-shaped block rotor, a first connection member, a second connection member and a contact bridge. The rod-shaped block rotor is single phase independent. The rod-shaped block rotor has a first through hole at the center, a first shaft is mounted in the first through hole. The rod-shaped block rotor has a first recess on each axial side face, a contact spring is mounted in each first recess and is able to move within a range defined by the first recess. The first connection member is mounted on the rod-shaped block rotor, a second shaft goes through the first connection member. The second shaft and a third shaft goes through the second connection member respectively. The contact bridge crosses through the rod-shaped block rotor, the outer profile of the contact bridge is centrally symmetric, the first shaft and the third shaft go through the contact bridge respectively. Contacts are welded to the end points on both sides of the contact bridge. The rotary dual breakpoint moving contact module of the present invention may realize large current short circuit breaking of rotary dual breakpoint moving contacts, the moving contacts may open quickly and rebound of the moving contacts is prevented, the contact pressure on two contact points is balanced.
摘要:
The present invention discloses a rotating dual break point contact. The contact comprises a rotor support, a first shaft, a second shaft, a third shaft, a first connection rod, a second connection rod, a contact bridge and a contact spring. The contact bridge is provided in the rotor support, the contact bridge rotates relative to the rotor support by means of the first shaft, the second shaft, the third shaft, the first connection rod and the second connection rod. The contact bridge rotates between an initial pressure position and a maximum repulsion position. A single contact spring is mounted on one side of the contact bridge and is located in the rotor support. The rotating dual break point contact of the present invention has a simple structure and high reliability. The contact pressure on both sides of the contact bridge is balanced via an included angle between an obround hole and contact points. A single spring is utilized so that the rotating dual break point contact has a compact structure and small volume.
摘要:
An electrical path for a circuit breaker, comprising: a first contact group and a second contact group. The first contact group comprises a first static contact (121) and a first moving contact (122), and the first static contact (121) is connected to an inlet terminal (101). The second contact group comprises a second static contact (131) and a second moving contact (132), wherein the first moving contact (122) and the second moving contact (132) are electrically connected, the second static contact (131) is connected to a trip unit (104), and the trip unit (104) is connected to an outlet terminal (105). The electrical path for a circuit breaker according to one or more embodiments of the present invention electrically connects a plurality of moving contacts (122, 132, 222). The plurality of moving contacts (122, 132, 222) are coaxially mounted, and the second static contact (131) is connected, across the second moving contact (132), to the outlet terminal (105) while ensuring insulation. Under the premise of making the overall structure of the circuit breaker compact and occupy a small space, the inlet terminal and the outlet terminal are arranged on the two sides, thereby facilitating the wiring of the circuit breaker and other electrical equipment.
摘要:
The present invention discloses a fast closing mechanism mounted on a side plate of a circuit breaker. The fast closing mechanism comprises a rotation shaft and an ejector pin. The ejector pin is rotatably assembled to the side plate by the rotation shaft. The ejector pin strides over the side plate. The ejector pin comprises a first portion and a second portion. The first portion is connected to a handle via a rod, and the second portion is located above a press plate. The fast closing mechanism has an additional ejector pin based on current structures, the press plate may press against a moving contact at an initial stage of a closing process, so that the moving contact will not move during the initial stage of the closing process. The mechanical energy generated during the closing process is stored in an energy storage spring. At a later stage of the closing process, the ejector pin releases the press plate, the press plate and the moving contact obtain a large initial speed by the spring force of the energy storage spring and accomplish closing quickly. The period for accomplishing the action of closing is reduced to 2-3ms.
摘要:
The present invention discloses a moving contact linkage structure of modular circuit breaker. The moving contact linkage structure of modular circuit breaker comprises: a first case having a first mounting hole and the second case having a second mounting hole, the first mounting hole and the second mounting hole corresponding to each other on position; a first shaft; an operation mechanism side plate having a third through hole, the third through hole being positioned at a rotation center of a contact rotor; an operation mechanism lower connecting rod having a fourth through hole, the first shaft connecting to the fourth through hole; a contact rotor being rotatable around a rotation center, the contact rotor having mating surfaces on both sides; a first linkage member connecting to the mating surface on a first side of the contact rotor; a second linkage member connecting to the mating surface on a second side of the contact rotor; the contact rotor, the first linkage member and the second linkage member being mounted in the first mounting hole and the second mounting hole.
摘要:
The present invention discloses a contact module for circuit breaker. The contact module comprises: a base, a cover, an operation mechanism, three kinds of single-pole switches and a release mechanism. The cover is mounted on the base to form an accommodation space, the operation mechanism, the three kinds of single-pole switches and the release mechanism are disposed in the accommodation space. The operation mechanism is connected to one kind of the single-pole switch, the release mechanism is connected to the three kinds of the single-pole switches. All of the three kinds of single-pole switches are asymmetrical. Each kind of single-pole switch comprises a strong side and a weak side, for each kind of single-pole switch, a contact housing on the strong side is thick and is connected to a thick shaft, a contact housing on the weak side is thin and is connected to a thin shaft. A rotor component in each kind of single-pole switch only has a single contact spring and the single contact spring is mounted on the weak side. Rotation shafts of adjacent single-pole switches are connected by a linkage shaft so that the single-pole switches are connected, a strong side of one single-pole switch is connected to a weak side of another single-pole switch.