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CN-224232625-U - Circuit breaker

CN224232625UCN 224232625 UCN224232625 UCN 224232625UCN-224232625-U

Abstract

The utility model belongs to the technical field of low-voltage appliances, and discloses a circuit breaker which comprises a shell, a traction rod, a release and a first adjusting piece, wherein the traction rod is rotationally arranged in the shell, the release comprises a bracket fixed in the shell, a magnetic yoke fixed on the bracket, an armature rotationally arranged on the bracket and a spring connected with the armature, the armature rotates relative to the bracket and has a first position and a second position, the spring enables the armature to have a trend of rotating from the first position to the second position, the armature is propped against the traction rod at the first position and enables the traction rod to trigger the circuit breaker to release, the armature is kept separated from the traction rod at the second position, the first adjusting piece is arranged in the shell and connected with the spring, and the position of the first adjusting piece relative to the release is adjustable. According to the circuit breaker provided by the utility model, the first adjusting piece is adjusted in position relative to the release to adjust the stretching length of the spring, namely the pulling force of the spring on the armature is adjusted, so that the adjustment of the magnetic protection multiple of the circuit breaker is realized.

Inventors

  • HU HUIYU
  • FANG YI
  • CHEN WENZHONG
  • SHI MINGHUI
  • YE NAN
  • CHEN KEQUAN
  • ZHENG ZHI
  • WU XINMENG

Assignees

  • 浙江正泰电器股份有限公司

Dates

Publication Date
20260512
Application Date
20250528

Claims (10)

  1. 1. A circuit breaker, comprising: A housing (100); The traction rod (200) is rotationally arranged in the shell (100); A release (300) comprising a bracket (310) secured within the housing (100), a yoke (320) secured to the bracket (310), an armature (330) rotatably disposed on the bracket (310), and a spring (340) coupled to the armature (330), the armature (330) rotatable relative to the bracket (310) having a first position and a second position, the spring (340) tending to rotate the armature (330) from the first position toward the second position, the armature (330) abutting the drawbar (200) in the first position and causing the drawbar (200) to trigger the circuit breaker to trip, the armature (330) remaining separated from the drawbar (200) in the second position; The first adjusting piece (400) is arranged in the shell (100) and connected with the spring (340), the position of the first adjusting piece (400) relative to the release (300) is adjustable, and the first adjusting piece (400) is used for adjusting the stretching length of the spring (340).
  2. 2. The circuit breaker according to claim 1, further comprising a guide member (500) fixed in the housing (100), wherein a first guide inclined surface (510) is provided on the guide member (500), a second guide inclined surface (410) is provided on the first adjustment member (400), the first guide inclined surface (510) is attached to the second guide inclined surface (410), and the first adjustment member (400) is capable of sliding relative to the first guide inclined surface (510) through the second guide inclined surface (410) to adjust the tensile length of the spring (340).
  3. 3. The circuit breaker according to claim 2, characterized in that the guide member (500) is provided with a guide protrusion (520), the guide protrusion (520) has the first guide inclined surface (510), the first adjusting member (400) is provided with a guide groove (402), the guide groove (402) has a second guide inclined surface (410), and the guide protrusion (520) is slidably inserted into the guide groove (402).
  4. 4. The circuit breaker according to claim 2, characterized in that the housing (100) is provided with a spacer (111), the guide member (500) is fixed on the top surface of the spacer (111), the spacer (111) is provided with a limit protrusion (112) on the top surface, and the first adjusting member (400) is sandwiched between the limit protrusion (112) and the guide member (500).
  5. 5. The circuit breaker according to claim 2, characterized in that the first adjusting member (400) is provided with a positioning groove (403), the circuit breaker further comprises a first positioning member (610) rotatably arranged on the housing (100), the first positioning member (610) is provided with an eccentric shaft (611), the central line of the eccentric shaft (611) is arranged in parallel with the rotation axis of the first positioning member (610), and the eccentric shaft (611) is slidably inserted into the positioning groove (403).
  6. 6. The circuit breaker of claim 2, wherein the release (300) further comprises a first adjustment screw (350), the first adjustment screw (350) is threadably coupled to the bracket (310) or guide (500), and a first end of the first adjustment screw (350) is capable of abutting the armature (330) to retain the armature (330) in the second position.
  7. 7. The circuit breaker according to claim 1, wherein the first adjustment member (400) is rotatably disposed within the housing (100), the first adjustment member (400) being rotatable to adjust the extension length of the spring (340).
  8. 8. The circuit breaker according to claim 1, characterized in that the armature (330) comprises a main body (334) and two rotating projections (331) provided on the main body (334), the bracket (310) comprising two support arms (311); One of the two support arms (311) is provided with a first through hole (3111), the other support arm is provided with an opening groove (3112), one of the two rotation protrusions (331) is inserted into the first through hole (3111), the other support arm is inserted into the opening groove (3112), or the two support arms (311) are provided with second through holes (3113), the two rotation protrusions (331) and the two second through holes (3113) are arranged in a one-to-one correspondence mode, and the rotation protrusions (331) are inserted into the corresponding second through holes (3113).
  9. 9. The circuit breaker according to claim 1, characterized in that the armature (330) is provided with a first hooking portion (332), the first adjusting member (400) is provided with a second hooking portion (401), one of the two hooks of the spring (340) is hooked with the first hooking portion (332), and the other is hooked with the second hooking portion (401).
  10. 10. The circuit breaker according to any of claims 1-9, further comprising a conductive strip (700) disposed within the housing (100), the conductive strip (700) comprising a first plate portion (710), the first plate portion (710) being perpendicular to a depth direction of the housing (100), the yoke (320) being sandwiched between the bracket (310) and the first plate portion (710).

Description

Circuit breaker Technical Field The utility model relates to the technical field of piezoelectric devices, in particular to a circuit breaker. Background A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions and closing, carrying and opening a current under abnormal circuit conditions within a prescribed time. In the related art, a circuit breaker generally provides short-circuit protection through a release having a bracket, a spring, a yoke and an armature, wherein the yoke is fixed on the bracket, the armature is rotatably arranged on the bracket, two ends of the spring are respectively connected with the bracket and the armature, the armature acts on the spring, and when the circuit breaker is in short circuit, the armature can overcome the spring to rotate under the magnetic attraction of the yoke and trigger the circuit breaker to trip. However, the tensile length of the spring is constant when the breaker is triggered to trip, and the breaker can only provide protection for short circuits under rated current, so that effective protection is difficult to provide if the breaker is applied to a use scene outside the rated current range. Disclosure of utility model The utility model aims to provide a circuit breaker, and the stretching length of a spring is adjustable when the circuit breaker is triggered to release. To achieve the purpose, the utility model adopts the following technical scheme: Provided is a circuit breaker including: A housing; the traction rod is rotationally arranged in the shell; The release comprises a bracket fixed in the shell, a magnetic yoke fixed on the bracket, an armature arranged on the bracket in a rotating way and a spring connected with the armature, wherein the armature rotates relative to the bracket and has a first position and a second position, the spring enables the armature to have a trend of rotating from the first position to the second position, the armature abuts against the traction rod in the first position and enables the traction rod to trigger the circuit breaker to release, and the armature is kept separated from the traction rod in the second position; The first adjusting piece is arranged in the shell and connected with the spring, the position of the first adjusting piece relative to the release is adjustable, and the first adjusting piece is used for adjusting the stretching length of the spring. Optionally, the circuit breaker further includes a guide member fixed in the housing, a first guide inclined plane is disposed on the guide member, a second guide inclined plane is disposed on the first adjusting member, the first guide inclined plane is attached to the second guide inclined plane, and the first adjusting member can slide relative to the first guide inclined plane through the second guide inclined plane to adjust the stretching length of the spring. Optionally, the guide piece is provided with a guide protrusion, the guide protrusion is provided with a first guide inclined plane, the first adjusting piece is provided with a guide groove, the guide groove is provided with a second guide inclined plane, and the guide protrusion is slidably inserted into the guide groove. Optionally, a partition board is arranged on the shell, the guide piece is fixed on the top surface of the partition board, a limiting protrusion is arranged on the top surface of the partition board, and the first adjusting piece is clamped between the limiting protrusion and the guide piece. Optionally, a positioning groove is formed in the first adjusting piece, the circuit breaker further comprises a first positioning piece rotationally arranged on the shell, the first positioning piece is provided with an eccentric shaft, the central line of the eccentric shaft is parallel to the rotation axis of the first positioning piece, and the eccentric shaft is slidingly inserted into the positioning groove. Optionally, the release further includes a first adjusting screw threadably connected to the bracket or guide, and a first end of the first adjusting screw is capable of abutting the armature to retain the armature in the second position. Optionally, the first adjusting member is rotatably disposed in the housing, and the first adjusting member is rotatable to adjust the extension length of the spring. Optionally, the armature comprises a main body part and two rotating protrusions arranged on the main body part, and the bracket comprises two supporting arms; One of the two supporting arms is provided with a first through hole, the other one is provided with an open slot, one of the two rotating bulges is inserted into the first through hole, the other one is inserted into the open slot, or the two supporting arms are provided with second through holes, the two rotating bulges are arranged in one-to-one correspondence with the two second through holes, and the rotating bulges are inserted into the corr