WO2025097893A1 - 断路器的操作机构 - Google Patents

断路器的操作机构 Download PDF

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Publication number
WO2025097893A1
WO2025097893A1 PCT/CN2024/110224 CN2024110224W WO2025097893A1 WO 2025097893 A1 WO2025097893 A1 WO 2025097893A1 CN 2024110224 W CN2024110224 W CN 2024110224W WO 2025097893 A1 WO2025097893 A1 WO 2025097893A1
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WO
WIPO (PCT)
Prior art keywords
connecting rod
lock
positioning
buckle
contact
Prior art date
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Pending
Application number
PCT/CN2024/110224
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English (en)
French (fr)
Inventor
金蕾
高汉林
黄明竣
吴子嘉
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SHANGHAI YONGJI ELECTRICAL HOLDING CO Ltd
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SHANGHAI YONGJI ELECTRICAL HOLDING CO Ltd
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Publication of WO2025097893A1 publication Critical patent/WO2025097893A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms

Definitions

  • the present invention relates to the technical field of circuit breakers, and in particular to an operating mechanism of a circuit breaker.
  • Miniature circuit breakers are the most widely used terminal protection devices in building electrical terminal distribution devices. They can provide line protection such as short circuit, overload, and overvoltage. Another example is a residual current action protector with overcurrent protection, which can quickly cut off the faulty power supply in a short time, protect the safety of people and electrical equipment, and play the role of overload, short circuit and leakage protection.
  • the operating mechanism of the circuit breaker is one of the core components of the circuit breaker, which is used to drive the breaking and closing of the moving contact and the static contact.
  • the operating mechanism of the traditional miniature circuit breaker includes a handle, a contact frame, a moving contact, a trip buckle, and a lock buckle. The trip buckle and the lock buckle are respectively hinged on the contact frame.
  • the handle is linked to the trip buckle through a U-shaped connecting rod, and the closing or disconnection of the operating mechanism is realized through the cooperation between the trip buckle and the lock buckle.
  • the opening and closing speed is relatively slow, resulting in a weak breaking capacity of the circuit breaker.
  • the operating mechanism also has the problems of complex structure, cumbersome assembly, and unreliable performance.
  • the purpose of the present invention is to overcome the defects of the prior art and provide an operating mechanism for a circuit breaker with a simple structure, stable and reliable performance, convenient assembly, fast opening and closing speed, and flexible operation.
  • the present invention adopts an operating mechanism of a circuit breaker, including a handle rotatably arranged in a shell, a lock buckle slidably arranged in the shell, a trip buckle rotatably arranged in the shell, a torsion spring arranged between the trip buckle and the shell, a contact frame rotatably arranged in the shell, a spring arranged between the contact frame and the shell, and a moving contact coordinated with the contact frame,
  • the handle is connected to the lock buckle through a connecting rod
  • one end of the lock buckle is connected to the contact frame through a U-shaped connecting rod
  • the other end of the lock buckle has a locking groove coordinated with the trip buckle
  • the locking groove rotates with the lock buckle and can be buckled on one end of the trip buckle to achieve locking of the lock buckle and the trip buckle
  • the other end of the trip buckle has a tripping part coordinated with the electromagnetic release and the bimetallic strip
  • the electromagnetic release and the bimetallic strip can respectively drive the tripping part to operate
  • the operating mechanism adopts a four-link structure design, so that the operating torque of the circuit breaker is evenly distributed, avoiding the situation where the circuit breaker is operated too hard or too lightly, and the operation is more flexible.
  • the lock adopts a sliding structure design, the handle drives the lock to slide through the connecting rod, and the lock drives the contact frame to quickly perform the opening and closing action through the U-shaped connecting rod, so that the circuit breaker can be quickly opened and closed, and the operating mechanism can open and close faster.
  • the locking groove of the lock is buckled on the trip buckle, and the electromagnetic release and the bimetallic strip can drive the trip buckle action respectively.
  • the trip buckle can be quickly unlocked with the lock buckle, and the tripping action is more sensitive and more reliable. Therefore, the operating mechanism of the circuit breaker has the advantages of simple structure, stable and reliable performance, convenient assembly, fast opening and closing speed, and flexible operation.
  • the handle is provided with a shaft hole connected to the connecting rod, one end of the connecting rod is inserted into the shaft hole, the lock is provided with a driving hole matched with the connecting rod, the other end of the connecting rod has a guide rod portion that passes through the driving hole and extends into the sliding guide hole of the housing, and the guide rod portion of the connecting rod moves with the handle and reciprocates in the sliding guide hole.
  • the lock is slidably arranged in the housing through the connecting rod, thereby facilitating the assembly of the lock and the housing, and ensuring that the lock can reliably move in the housing, and the lock can quickly drive the contact frame to move, which is conducive to accelerating the opening and closing speed of the operating mechanism, and the reliability of the action is higher.
  • the locking groove is an arcuate groove
  • one end of the jump buckle has an arcuate convex bearing surface matched with the locking groove.
  • the jump buckle is provided with an arcuate convex bearing surface matched with the locking groove, thereby ensuring that the tripping action of the jump buckle and the lock buckle is more sensitive.
  • one end of the lock has a connection hole matched with the U-shaped connecting rod
  • the contact frame is provided with a through hole matched with the U-shaped connecting rod
  • a guide groove is provided at the corresponding through hole in the shell
  • one end of the U-shaped connecting rod is connected to the connection hole
  • the other end of the U-shaped connecting rod passes through the through hole and extends in the guide groove
  • the other end of the U-shaped connecting rod moves with the lock and reciprocates in the guide groove.
  • the contact frame and the lock are connected by the U-shaped connecting rod, so as to facilitate the assembly of the contact frame and the lock, and one end of the U-shaped connecting rod is slidably arranged in the guide groove of the shell, so as to ensure that the transmission between the lock and the contact frame is more reliable.
  • a positioning boss is provided on the contact frame, a positioning hole matched with the positioning boss is provided on the moving contact, the positioning boss is inserted in the positioning hole, a contact torsion spring is provided on the positioning boss, and a first limiting groove and a second limiting groove are provided on one side of the moving contact corresponding to the positioning boss, and both ends of the contact torsion spring are respectively engaged with the first limiting groove and the second limiting groove.
  • the contact torsion spring can increase the contact pressure of the moving contact, thereby ensuring that the moving contact can reliably contact the static contact, and the moving contact and the contact frame are assembled in a snap-fit manner, which is conducive to improving the assembly efficiency of the moving contact and the contact frame.
  • the contact frame is provided with a positioning column matched with a spring, one end of the spring is engaged with the positioning column, and the other end of the spring is engaged with a slot in the housing.
  • the spring can accelerate the movement of the contact frame, thereby facilitating the improvement of the movement speed of the operating mechanism.
  • a positioning groove is provided on one side of the contact frame corresponding to the positioning column, and a positioning column is provided on the housing corresponding to the positioning groove, and the positioning column is inserted into the positioning groove to form a rotational connection between the contact frame and the positioning column.
  • the contact frame and the housing are assembled in a snap-fit manner, thereby facilitating the assembly of the contact frame and the housing, and ensuring that the contact frame can reliably operate in the housing, which is conducive to improving the working reliability of the operating mechanism.
  • a positioning shaft is provided in the housing corresponding to the jump button, the positioning shaft is inserted into the positioning shaft hole in the middle of the jump button, the torsion spring is sleeved on the positioning shaft, one end of the torsion spring abuts against the clamping groove of the jump button, and the other end of the torsion spring abuts against the limit plate of the housing.
  • the jump button is rotatably arranged on the positioning shaft in the housing, which can ensure that the jump button can reliably rotate in the housing, and the torsion spring can improve the action sensitivity of the jump button, so that the action speed of the operating mechanism is faster.
  • Figure 1 is a stereoscopic diagram of an embodiment of the present invention.
  • Figure 2 is a main view of an embodiment of the present invention.
  • Figure 3 is a decomposition diagram of an embodiment of the present invention.
  • Figure 4 is a three-dimensional view of the contact frame according to an embodiment of the present invention.
  • an embodiment of the present invention is an operating mechanism of a circuit breaker, comprising a handle 11 rotatably disposed in a housing 10, a lock 12 slidably disposed in the housing 10, a trip lock 13 rotatably disposed in the housing 10, a torsion spring 14 disposed between the trip lock 13 and the housing 10, a contact frame 15 rotatably disposed in the housing 10, a spring 16 disposed between the contact frame 15 and the housing 10, and a moving contact 17 cooperating with the contact frame 15.
  • the handle 11 is connected to the lock 12 through a connecting rod 18, and one end of the lock 12 is connected to the housing 10 by a connecting rod 18.
  • the U-shaped connecting rod 19 is connected to the contact frame 15.
  • the other end of the lock buckle 12 has a locking groove 120 that matches the trip buckle 13.
  • the locking groove 120 rotates with the lock buckle 12 and can be buckled on one end of the trip buckle 13 to achieve the locking of the lock buckle 12 and the trip buckle 13.
  • the other end of the trip buckle 13 has a tripping part 131 that cooperates with the electromagnetic release 20 and the bimetallic strip 21.
  • the electromagnetic release 20 and the bimetallic strip 21 can respectively drive the tripping part 131 to move and achieve the unlocking of the lock buckle 12 and the trip buckle 13.
  • the handle 11 is provided with a shaft hole 111 connected to the connecting rod 18, one end of the connecting rod 18 is inserted into the shaft hole 111, the lock buckle 12 is provided with a driving hole 121 matched with the connecting rod 18, the other end of the connecting rod 18 has a guide rod portion 181 passing through the driving hole 121 and extending into the sliding guide hole 101 of the housing 10, and the guide rod portion 181 of the connecting rod 18 moves with the handle 11 and reciprocates in the sliding guide hole 101.
  • the lock buckle is slidably arranged in the housing through the connecting rod, so as to facilitate the assembly of the lock buckle and the housing, and ensure that the lock buckle can reliably move in the housing, and the lock buckle can quickly drive the contact frame to move, which is conducive to accelerating the separation and closing speed of the operating mechanism, and the reliability of the action is higher.
  • the locking groove 120 is an arcuate groove, and one end of the jump buckle 13 has an arcuate convex bearing surface 132 that matches the locking groove 120.
  • the jump buckle is provided with an arcuate convex bearing surface that matches the locking groove, thereby ensuring that the release action of the jump buckle and the lock buckle is more sensitive.
  • the lock 12 has a connection hole 122 at one end thereof to match the U-shaped connecting rod 19
  • the contact frame 15 is provided with a through hole 151 to match the U-shaped connecting rod 19
  • a guide groove 102 is provided in the housing 10 at the position corresponding to the through hole 151, one end of the U-shaped connecting rod 19 is connected in the connection hole 122, the other end of the U-shaped connecting rod 19 passes through the through hole 102 and extends in the guide groove 102, and the other end of the U-shaped connecting rod 19 moves with the lock 12 and reciprocates in the guide groove 102.
  • the contact frame and the lock are connected by the U-shaped connecting rod, so as to facilitate the assembly of the contact frame and the lock, and one end of the U-shaped connecting rod is slidably arranged in the guide groove of the housing, so as to ensure that the transmission between the lock and the contact frame is more reliable.
  • the contact frame 15 is provided with a positioning boss 152
  • the moving contact 17 is provided with a positioning hole 170 matched with the positioning boss 152
  • the positioning boss 152 is inserted into the positioning hole 170
  • the positioning boss 152 is provided with a contact torsion spring 22
  • the moving contact 17 is provided with a first limiting groove 171 and a second limiting groove 172 at one side corresponding to the positioning boss 152
  • the two ends of the contact torsion spring 22 are respectively engaged with the first limiting groove 171 and the second limiting groove 172.
  • the contact torsion spring can increase the contact pressure of the moving contact, thereby ensuring that the moving contact can reliably contact the static contact, and the moving contact and the contact frame are assembled in a snap-fit manner, which is conducive to improving the assembly efficiency of the moving contact and the contact frame.
  • the contact frame 15 is provided with a positioning column 153 matched with the spring 16, one end of the spring 16 is engaged with the positioning column 153, and the other end of the spring 16 is engaged with the card slot 103 in the housing 10.
  • the spring can accelerate the movement of the contact frame, which is beneficial to improve the movement speed of the operating mechanism.
  • a positioning groove 154 is provided on one side of the contact frame 15 corresponding to the positioning column 153, and a positioning column 104 is provided on the housing 10 corresponding to the positioning groove 154.
  • the positioning column 104 is inserted into the positioning groove 154 and constitutes a rotational connection between the contact frame 15 and the positioning column 104.
  • the contact frame and the housing are assembled in a card-fit manner, which facilitates the assembly of the contact frame and the housing, and can ensure that the contact frame can reliably move in the housing, which is beneficial to improve the working reliability of the operating mechanism.
  • a positioning shaft 105 is provided in the housing 10 corresponding to the jump button 13, the positioning shaft 105 is inserted into the positioning shaft hole 133 in the middle of the jump button 13, the torsion spring 14 is sleeved on the positioning shaft 105, one end of the torsion spring 14 abuts against the clamping groove 134 of the jump button 13, and the other end of the torsion spring 14 abuts against the limit plate 106 of the housing 10.
  • the jump button is rotatably arranged on the positioning shaft in the housing, which can ensure that the jump button can rotate reliably in the housing, and the torsion spring can improve the action sensitivity of the jump button, so that the action speed of the operating mechanism is faster.
  • the operating mechanism adopts a four-link structure design, so that the operating torque of the circuit breaker is evenly distributed, avoiding the situation where the circuit breaker is operated too hard or too lightly, and the operation is more flexible.
  • the lock adopts a sliding structure design.
  • the handle drives the lock to slide through the connecting rod, and the lock drives the contact frame to quickly perform the opening and closing action through the U-shaped connecting rod, so that the circuit breaker can be quickly opened and closed, and the operating mechanism can open and close faster.
  • the locking groove of the lock is buckled on the tripping buckle, and the electromagnetic release and bimetallic strip can drive the tripping action respectively.
  • the tripping buckle can be quickly unlocked with the lock, and the tripping action is more sensitive and more reliable. Therefore, the operating mechanism of the circuit breaker has the advantages of simple structure, stable and reliable performance, convenient assembly, fast opening and closing speed, and flexible operation.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Abstract

本发明涉及一种断路器的操作机构，包括手柄、锁扣、转动设置在壳体内的跳扣、设置在跳扣与壳体之间的扭簧、转动设置在壳体内触头架、设置在触头架与壳体之间的弹簧、与触头架联动配合的动触头，所述的手柄通过连杆与锁扣相连接，所述的锁扣一端通过U型连杆与触头架相连接，所述的锁扣另一端具有与跳扣相配合的锁定槽，所述的锁定槽随锁扣转动且能够扣合在跳扣一端上，且实现锁扣与跳扣的锁定，所述的跳扣另一端具有与电磁脱扣器、双金属片联动配合的脱扣部，所述的电磁脱扣器、双金属片能够分别驱动脱扣部动作，且实现锁扣与跳扣的解锁。本发明具有结构简单、性能稳定可靠、装配便捷、分合闸速度快、操作灵活的优点。

Description

断路器的操作机构 技术领域
本发明涉及断路器技术领域，具体涉及一种断路器的操作机构。
 背景技术
小型断路器是建筑电气终端配电装置引中使用最广泛的一种终端保护电器，其能够提供短路、过载、过压等线路保护。又例如带过电流保护的剩余电流动作保护器，能在短时间内迅速切断故障电源， 保护人身及用电设备的安全，起到过载、短路以及漏电保护的功能。断路器的操作机构是断路器的核心部件之一，用于驱动动触头与静触头的分断、闭合。传统的小型断路器的操作机构包括手柄、触头架、动触头、跳扣、锁扣，跳扣和锁扣分别铰接在触头架上，手柄通过 U 型连杆与跳扣联动，通过跳扣与锁扣之间的配合实现操作机构的合闸或分断。该操作机构在执行分合闸时，分合闸速度相对较为缓慢，导致断路器的分断能力较弱。且该操作机构还存在结构复杂、装配繁琐、性能不可靠。
 发明内容
本发明的目的在于克服现有技术的缺陷，提供一种结构简单、性能稳定可靠、装配便捷、分合闸速度快、操作灵活的断路器的操作机构。
为实现上述目的，本发明采用一种断路器的操作机构，包括转动设置在壳体内的手柄、滑动设置在壳体内的锁扣、转动设置在壳体内的跳扣、设置在跳扣与壳体之间的扭簧、转动设置在壳体内触头架、设置在触头架与壳体之间的弹簧、与触头架联动配合的动触头，所述的手柄通过连杆与锁扣相连接，所述的锁扣一端通过 U 型连杆与触头架相连接，所述的锁扣另一端具有与跳扣相配合的锁定槽，所述的锁定槽随锁扣转动且能够扣合在跳扣一端上，且实现锁扣与跳扣的锁定，所述的跳扣另一端具有与电磁脱扣器、双金属片联动配合的脱扣部，所述的电磁脱扣器、双金属片能够分别驱动脱扣部动作，且实现锁扣与跳扣的解锁。
上述结构的有益效果是:该操作机构采用四连杆式结构设计，从而断路器的操作力矩均衡分布，避免出现断路器操作过力或过轻的情况，操作更灵活。锁扣采用滑动式结构设计，手柄通过连杆驱动锁扣滑动，锁扣通过 U 型连杆驱触头架快速执行分合闸动作，从而可实现断路器的快速分合闸，操作机构分合闸速度更快。在脱扣时，锁扣的锁定槽扣合在跳扣上，电磁脱扣器、双金属片可分别驱动跳扣动作， 跳扣能够与锁扣快速解锁，脱扣动作更灵敏，可靠性更高。从而该断路器的操作机构具有结构简单、性能稳定可靠、装配便捷、分合闸速度快、操作灵活的优点。
特别地，所述的手柄上设置有与连杆相连接的转轴孔，所述的连杆一端穿插在转轴孔内，所述的锁扣上设置有与连杆相配合的驱动孔，所述的连杆另一端具有穿过驱动孔且延伸在壳体的滑行导向孔内的导向杆部，所述的连杆的导向杆部随手柄动作且在滑行导向孔内往复滑动。锁扣通过连杆滑动设置在壳体内，从而便于锁扣与壳体的装配，且可保证锁扣能够在壳体内可靠动作，锁扣能够快速驱触头架动作，有利于加速该操作机构的分合速度，动作的可靠性更高。
特别地，所述的锁定槽为弧面凹槽，所述的跳扣一端具有与锁定槽相配合的弧面凸起承载面。在跳扣上设置有与锁定槽相配合的弧面凸起承载面，从而可保证跳扣与锁扣的脱扣动作更灵敏。
特别地，所述的锁扣一端具有与 U 型连杆相配合的连接孔，所述的触头架上设置有与 U 型连杆相配合的通孔，所述的壳体内对应通孔处设置有导向槽，所述的 U 型连杆一端连接在连接孔内，所述的 U 型连杆另一端穿过通孔且延伸在导向槽内，所述的 U 型连杆另一端随锁扣动作且在导向槽内往复动作。触头架与锁扣通过 U 型连杆连接，从而便于触头架与锁扣的装配，在 U 型连杆一端滑动设置在壳体的导向槽内，从而可保证锁扣与触头架之间的传动更可靠。
特别地， 所述的触头架上设置有定位凸台，所述的动触头上设置有与定位凸台相配合的定位孔，所述的定位凸台穿插在定位孔内， 所述的定位凸台上设置有触头扭簧，所述的动触头对应定位凸台一侧处分别设置有第一限位槽、第二限位槽，所述的触头扭簧两端分别卡合在第一限位槽、第二限位槽上。触头扭簧可增大动触头的接触压力， 从而可保证动触头能够与静触头可靠接触，且动触头与触头架采用卡接配合方式装配，有利于提高动触头与触头架的装配效率。
特别地，所述的触头架上设置有与弹簧相配合的定位柱，所述的弹簧一端卡合在定位柱上，所述的弹簧另一端卡合在壳体内的卡槽内。弹簧可起到加速触头架动作的作用，从而有利于提高该操作机构的动作速度。
特别地，所述的触头架一侧上对应定位柱处设置定位槽，所述的壳体上对应定位槽处设置有定位柱，所述的定位柱穿插在定位槽内， 且构成触头架与定位柱的转动连接配合。触头架与壳体采用卡接配合方式装配，从而便于触头架与壳体的装配，且可保证触头架能够在壳体内可靠动作，有利于提高该操作机构的工作可靠性。
特别地，所述的壳体内对应跳扣处设置有定位轴，所述的定位轴穿插在跳扣中部的定位轴孔内，所述的扭簧套装在定位轴上，所述的扭簧一端抵触在跳扣的卡接槽内，所述的扭簧另一端抵触在壳体的限位片上。跳扣转动设置在壳体内的定位轴上，可保证跳扣能够可靠在壳体内转动，且扭簧可提高跳扣的动作灵敏度，从而该操作机构的动作速度更快。
 附图说明
图 1 为本发明实施例立体图。
图 2 为本发明实施例主视图。
图 3 为本发明实施例分解图。
图 4 为本发明实施例触头架的立体图。
 具体实施方式
如图 1～4 所示，本发明实施例是一种断路器的操作机构，包括转动设置在壳体 10 内的手柄 11、滑动设置在壳体 10 内的锁扣 12、转动设置在壳体 10 内的跳扣 13、设置在跳扣 13 与壳体 10 之间的扭簧 14、转动设置在壳体 10 内触头架 15、设置在触头架 15 与壳体 10之间的弹簧 16、与触头架 15 联动配合的动触头 17，所述的手柄 11通过连杆 18 与锁扣 12 相连接，所述的锁扣 12 一端通过U 型连杆 19与触头架 15 相连接，所述的锁扣 12 另一端具有与跳扣 13 相配合的锁定槽 120，所述的锁定槽 120 随锁扣 12 转动且能够扣合在跳扣 13一端上，且实现锁扣 12 与跳扣 13 的锁定，所述的跳扣 13 另一端具有与电磁脱扣器 20、双金属片 21 联动配合的脱扣部 131，所述的电磁脱扣器 20、双金属片 21 能够分别驱动脱扣部 131 动作，且实现锁扣 12 与跳扣 13 的解锁。所述的手柄 11 上设置有与连杆 18 相连接的转轴孔 111，所述的连杆 18 一端穿插在转轴孔 111 内，所述的锁扣12 上设置有与连杆 18 相配合的驱动孔 121，所述的连杆 18 另一端具有穿过驱动孔 121 且延伸在壳体 10 的滑行导向孔 101 内的导向杆部181，所述的连杆 18 的导向杆部 181 随手柄 11 动作且在滑行导向孔101 内往复滑动。锁扣通过连杆滑动设置在壳体内，从而便于锁扣与壳体的装配，且可保证锁扣能够在壳体内可靠动作，锁扣能够快速驱触头架动作，有利于加速该操作机构的分合速度，动作的可靠性更高。所述的锁定槽 120 为弧面凹槽，所述的跳扣 13 一端具有与锁定槽 120 相配合的弧面凸起承载面 132。在跳扣上设置有与锁定槽相配合的弧面凸起承载面，从而可保证跳扣与锁扣的脱扣动作更灵敏。
如图 1 和 3 所示，所述的锁扣 12 一端具有与 U 型连杆 19 相配合的连接孔 122，所述的触头架 15 上设置有与U 型连杆 19 相配合的通孔 151，所述的壳体 10 内对应通孔 151 处设置有导向槽 102，所述的U 型连杆 19 一端连接在连接孔 122 内，所述的 U 型连杆 19 另一端穿过通孔 102 且延伸在导向槽 102 内，所述的 U 型连杆 19 另一端随锁扣 12 动作且在导向槽 102 内往复动作。触头架与锁扣通过 U 型连杆连接，从而便于触头架与锁扣的装配，在 U 型连杆一端滑动设置在壳体的导向槽内，从而可保证锁扣与触头架之间的传动更可靠。所述的触头架 15 上设置有定位凸台 152，所述的动触头 17 上设置有与定位凸台 152 相配合的定位孔 170，所述的定位凸台 152 穿插在定位孔 170内，所述的定位凸台 152 上设置有触头扭簧 22，所述的动触头 17 对应定位凸台 152 一侧处分别设置有第一限位槽 171、第二限位槽 172， 所述的触头扭簧 22 两端分别卡合在第一限位槽 171、第二限位槽 172 上。触头扭簧可增大动触头的接触压力，从而可保证动触头能够与静触头可靠接触，且动触头与触头架采用卡接配合方式装配，有利于提高动触头与触头架的装配效率。所述的触头架 15 上设置有与弹簧 16相配合的定位柱 153，所述的弹簧 16 一端卡合在定位柱 153 上，所述的弹簧 16 另一端卡合在壳体 10 内的卡槽 103 内。弹簧可起到加速触头架动作的作用，从而有利于提高该操作机构的动作速度。所述的触头架 15 一侧上对应定位柱 153 处设置定位槽 154，所述的壳体 10上对应定位槽 154 处设置有定位柱 104，所述的定位柱 104 穿插在定位槽 154 内，且构成触头架 15 与定位柱 104 的转动连接配合。触头架与壳体采用卡接配合方式装配，从而便于触头架与壳体的装配，且可保证触头架能够在壳体内可靠动作，有利于提高该操作机构的工作可靠性。所述的壳体 10 内对应跳扣 13 处设置有定位轴 105，所述的定位轴 105 穿插在跳扣 13 中部的定位轴孔 133 内，所述的扭簧 14 套装在定位轴 105 上，所述的扭簧 14 一端抵触在跳扣 13 的卡接槽 134内，所述的扭簧 14 另一端抵触在壳体 10 的限位片 106 上。跳扣转动设置在壳体内的定位轴上，可保证跳扣能够可靠在壳体内转动，且扭簧可提高跳扣的动作灵敏度，从而该操作机构的动作速度更快。
该操作机构采用四连杆式结构设计，从而断路器的操作力矩均衡分布，避免出现断路器操作过力或过轻的情况，操作更灵活。锁扣采用滑动式结构设计，手柄通过连杆驱动锁扣滑动，锁扣通过 U 型连杆驱触头架快速执行分合闸动作，从而可实现断路器的快速分合闸，操作机构分合闸速度更快。在脱扣时，锁扣的锁定槽扣合在跳扣上，电磁脱扣器、双金属片可分别驱动跳扣动作，跳扣能够与锁扣快速解锁， 脱扣动作更灵敏，可靠性更高。从而该断路器的操作机构具有结构简单、性能稳定可靠、装配便捷、分合闸速度快、操作灵活的优点。

Claims (8)

  1. 一种断路器的操作机构，其特征在于：包括转动设置在壳体内的手柄、滑动设置在壳体内的锁扣、转动设置在壳体内的跳扣、设置在跳扣与壳体之间的扭簧、转动设置在壳体内触头架、设置在触头架与壳体之间的弹簧、与触头架联动配合的动触头，所述的手柄通过连杆与锁扣相连接，所述的锁扣一端通过 U 型连杆与触头架相连接， 所述的锁扣另一端具有与跳扣相配合的锁定槽，所述的锁定槽随锁扣转动且能够扣合在跳扣一端上，且实现锁扣与跳扣的锁定，所述的跳扣另一端具有与电磁脱扣器、双金属片联动配合的脱扣部，所述的电磁脱扣器、双金属片能够分别驱动脱扣部动作，且实现锁扣与跳扣的解锁。
  2. 根据权利要求 1 所述的断路器的操作机构，其特征在于：所述的手柄上设置有与连杆相连接的转轴孔，所述的连杆一端穿插在转轴孔内，所述的锁扣上设置有与连杆相配合的驱动孔，所述的连杆另一端具有穿过驱动孔且延伸在壳体的滑行导向孔内的导向杆部，所述的连杆的导向杆部随手柄动作且在滑行导向孔内往复滑动。
  3. 根据权利要求 1 或 2 所述的断路器的操作机构，其特征在于： 所述的锁定槽为弧面凹槽，所述的跳扣一端具有与锁定槽相配合的弧面凸起承载面。
  4. 根据权利要求 1 或 2 所述的断路器的操作机构，其特征在于： 所述的锁扣一端具有与 U 型连杆相配合的连接孔，所述的触头架上设置有与U 型连杆相配合的通孔，所述的壳体内对应通孔处设置有导向槽，所述的 U 型连杆一端连接在连接孔内，所述的 U 型连杆另一端穿过通孔且延伸在导向槽内，所述的 U 型连杆另一端随锁扣动作且在导向槽内往复动作。
  5. 根据权利要求 1 或 2 所述的断路器的操作机构，其特征在于： 所述的触头架上设置有定位凸台，所述的动触头上设置有与定位凸台相配合的定位孔，所述的定位凸台穿插在定位孔内，所述的定位凸台上设置有触头扭簧，所述的动触头对应定位凸台一侧处分别设置有第一限位槽、第二限位槽，所述的触头扭簧两端分别卡合在第一限位槽、第二限位槽上。
  6. 根据权利要求 1 或 2 所述的断路器的操作机构，其特征在于： 所述的触头架上设置有与弹簧相配合的定位柱，所述的弹簧一端卡合在定位柱上，所述的弹簧另一端卡合在壳体内的卡槽内。
  7. 根据权利要求 6 所述的断路器的操作机构，其特征在于：所述的触头架一侧上对应定位柱处设置定位槽，所述的壳体上对应定位槽处设置有定位柱，所述的定位柱穿插在定位槽内，且构成触头架与定位柱的转动连接配合。
  8. 根据权利要求 1 或 2 所述的断路器的操作机构，其特征在于： 所述的壳体内对应跳扣处设置有定位轴，所述的定位轴穿插在跳扣中部的定位轴孔内，所述的扭簧套装在定位轴上，所述的扭簧一端抵触在跳扣的卡接槽内，所述的扭簧另一端抵触在壳体的限位片上。
PCT/CN2024/110224 2023-11-09 2024-08-06 断路器的操作机构 Pending WO2025097893A1 (zh)

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